/src/nghttp2/lib/nghttp2_session.c
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1 | | /* |
2 | | * nghttp2 - HTTP/2 C Library |
3 | | * |
4 | | * Copyright (c) 2012 Tatsuhiro Tsujikawa |
5 | | * |
6 | | * Permission is hereby granted, free of charge, to any person obtaining |
7 | | * a copy of this software and associated documentation files (the |
8 | | * "Software"), to deal in the Software without restriction, including |
9 | | * without limitation the rights to use, copy, modify, merge, publish, |
10 | | * distribute, sublicense, and/or sell copies of the Software, and to |
11 | | * permit persons to whom the Software is furnished to do so, subject to |
12 | | * the following conditions: |
13 | | * |
14 | | * The above copyright notice and this permission notice shall be |
15 | | * included in all copies or substantial portions of the Software. |
16 | | * |
17 | | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
18 | | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
19 | | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
20 | | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE |
21 | | * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION |
22 | | * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION |
23 | | * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
24 | | */ |
25 | | #include "nghttp2_session.h" |
26 | | |
27 | | #include <string.h> |
28 | | #include <stddef.h> |
29 | | #include <stdio.h> |
30 | | #include <assert.h> |
31 | | #include <stdarg.h> |
32 | | |
33 | | #include "nghttp2_helper.h" |
34 | | #include "nghttp2_net.h" |
35 | | #include "nghttp2_priority_spec.h" |
36 | | #include "nghttp2_option.h" |
37 | | #include "nghttp2_http.h" |
38 | | #include "nghttp2_pq.h" |
39 | | #include "nghttp2_debug.h" |
40 | | |
41 | | /* |
42 | | * Returns non-zero if the number of outgoing opened streams is larger |
43 | | * than or equal to |
44 | | * remote_settings.max_concurrent_streams. |
45 | | */ |
46 | | static int |
47 | 0 | session_is_outgoing_concurrent_streams_max(nghttp2_session *session) { |
48 | 0 | return session->remote_settings.max_concurrent_streams <= |
49 | 0 | session->num_outgoing_streams; |
50 | 0 | } |
51 | | |
52 | | /* |
53 | | * Returns non-zero if the number of incoming opened streams is larger |
54 | | * than or equal to |
55 | | * local_settings.max_concurrent_streams. |
56 | | */ |
57 | | static int |
58 | 0 | session_is_incoming_concurrent_streams_max(nghttp2_session *session) { |
59 | 0 | return session->local_settings.max_concurrent_streams <= |
60 | 0 | session->num_incoming_streams; |
61 | 0 | } |
62 | | |
63 | | /* |
64 | | * Returns non-zero if the number of incoming opened streams is larger |
65 | | * than or equal to |
66 | | * session->pending_local_max_concurrent_stream. |
67 | | */ |
68 | | static int |
69 | 0 | session_is_incoming_concurrent_streams_pending_max(nghttp2_session *session) { |
70 | 0 | return session->pending_local_max_concurrent_stream <= |
71 | 0 | session->num_incoming_streams; |
72 | 0 | } |
73 | | |
74 | | /* |
75 | | * Returns non-zero if |lib_error| is non-fatal error. |
76 | | */ |
77 | 0 | static int is_non_fatal(int lib_error_code) { |
78 | 0 | return lib_error_code < 0 && lib_error_code > NGHTTP2_ERR_FATAL; |
79 | 0 | } |
80 | | |
81 | 0 | int nghttp2_is_fatal(int lib_error_code) { |
82 | 0 | return lib_error_code < NGHTTP2_ERR_FATAL; |
83 | 0 | } |
84 | | |
85 | 0 | static int session_enforce_http_messaging(nghttp2_session *session) { |
86 | 0 | return (session->opt_flags & NGHTTP2_OPTMASK_NO_HTTP_MESSAGING) == 0; |
87 | 0 | } |
88 | | |
89 | | /* |
90 | | * Returns nonzero if |frame| is trailer headers. |
91 | | */ |
92 | | static int session_trailer_headers(nghttp2_session *session, |
93 | | nghttp2_stream *stream, |
94 | 0 | nghttp2_frame *frame) { |
95 | 0 | if (!stream || frame->hd.type != NGHTTP2_HEADERS) { |
96 | 0 | return 0; |
97 | 0 | } |
98 | 0 | if (session->server) { |
99 | 0 | return frame->headers.cat == NGHTTP2_HCAT_HEADERS; |
100 | 0 | } |
101 | | |
102 | 0 | return frame->headers.cat == NGHTTP2_HCAT_HEADERS && |
103 | 0 | (stream->http_flags & NGHTTP2_HTTP_FLAG_EXPECT_FINAL_RESPONSE) == 0; |
104 | 0 | } |
105 | | |
106 | | /* Returns nonzero if the |stream| is in reserved(remote) state */ |
107 | | static int state_reserved_remote(nghttp2_session *session, |
108 | 0 | nghttp2_stream *stream) { |
109 | 0 | return stream->state == NGHTTP2_STREAM_RESERVED && |
110 | 0 | !nghttp2_session_is_my_stream_id(session, stream->stream_id); |
111 | 0 | } |
112 | | |
113 | | /* Returns nonzero if the |stream| is in reserved(local) state */ |
114 | | static int state_reserved_local(nghttp2_session *session, |
115 | 0 | nghttp2_stream *stream) { |
116 | 0 | return stream->state == NGHTTP2_STREAM_RESERVED && |
117 | 0 | nghttp2_session_is_my_stream_id(session, stream->stream_id); |
118 | 0 | } |
119 | | |
120 | | /* |
121 | | * Checks whether received stream_id is valid. This function returns |
122 | | * 1 if it succeeds, or 0. |
123 | | */ |
124 | | static int session_is_new_peer_stream_id(nghttp2_session *session, |
125 | 0 | int32_t stream_id) { |
126 | 0 | return stream_id != 0 && |
127 | 0 | !nghttp2_session_is_my_stream_id(session, stream_id) && |
128 | 0 | session->last_recv_stream_id < stream_id; |
129 | 0 | } |
130 | | |
131 | | static int session_detect_idle_stream(nghttp2_session *session, |
132 | 0 | int32_t stream_id) { |
133 | | /* Assume that stream object with stream_id does not exist */ |
134 | 0 | if (nghttp2_session_is_my_stream_id(session, stream_id)) { |
135 | 0 | if (session->last_sent_stream_id < stream_id) { |
136 | 0 | return 1; |
137 | 0 | } |
138 | 0 | return 0; |
139 | 0 | } |
140 | 0 | if (session_is_new_peer_stream_id(session, stream_id)) { |
141 | 0 | return 1; |
142 | 0 | } |
143 | 0 | return 0; |
144 | 0 | } |
145 | | |
146 | 0 | static int check_ext_type_set(const uint8_t *ext_types, uint8_t type) { |
147 | 0 | return (ext_types[type / 8] & (1 << (type & 0x7))) > 0; |
148 | 0 | } |
149 | | |
150 | | static int session_call_error_callback(nghttp2_session *session, |
151 | | int lib_error_code, const char *fmt, |
152 | 0 | ...) { |
153 | 0 | size_t bufsize; |
154 | 0 | va_list ap; |
155 | 0 | char *buf; |
156 | 0 | int rv; |
157 | 0 | nghttp2_mem *mem; |
158 | |
|
159 | 0 | if (!session->callbacks.error_callback && |
160 | 0 | !session->callbacks.error_callback2) { |
161 | 0 | return 0; |
162 | 0 | } |
163 | | |
164 | 0 | mem = &session->mem; |
165 | |
|
166 | 0 | va_start(ap, fmt); |
167 | 0 | rv = vsnprintf(NULL, 0, fmt, ap); |
168 | 0 | va_end(ap); |
169 | |
|
170 | 0 | if (rv < 0) { |
171 | 0 | return NGHTTP2_ERR_NOMEM; |
172 | 0 | } |
173 | | |
174 | 0 | bufsize = (size_t)(rv + 1); |
175 | |
|
176 | 0 | buf = nghttp2_mem_malloc(mem, bufsize); |
177 | 0 | if (buf == NULL) { |
178 | 0 | return NGHTTP2_ERR_NOMEM; |
179 | 0 | } |
180 | | |
181 | 0 | va_start(ap, fmt); |
182 | 0 | rv = vsnprintf(buf, bufsize, fmt, ap); |
183 | 0 | va_end(ap); |
184 | |
|
185 | 0 | if (rv < 0) { |
186 | 0 | nghttp2_mem_free(mem, buf); |
187 | | /* vsnprintf may return error because of various things we can |
188 | | imagine, but typically we don't want to drop session just for |
189 | | debug callback. */ |
190 | 0 | DEBUGF("error_callback: vsnprintf failed. The template was %s\n", fmt); |
191 | 0 | return 0; |
192 | 0 | } |
193 | | |
194 | 0 | if (session->callbacks.error_callback2) { |
195 | 0 | rv = session->callbacks.error_callback2(session, lib_error_code, buf, |
196 | 0 | (size_t)rv, session->user_data); |
197 | 0 | } else { |
198 | 0 | rv = session->callbacks.error_callback(session, buf, (size_t)rv, |
199 | 0 | session->user_data); |
200 | 0 | } |
201 | |
|
202 | 0 | nghttp2_mem_free(mem, buf); |
203 | |
|
204 | 0 | if (rv != 0) { |
205 | 0 | return NGHTTP2_ERR_CALLBACK_FAILURE; |
206 | 0 | } |
207 | | |
208 | 0 | return 0; |
209 | 0 | } |
210 | | |
211 | | static int session_terminate_session(nghttp2_session *session, |
212 | | int32_t last_stream_id, |
213 | 0 | uint32_t error_code, const char *reason) { |
214 | 0 | int rv; |
215 | 0 | const uint8_t *debug_data; |
216 | 0 | size_t debug_datalen; |
217 | |
|
218 | 0 | if (session->goaway_flags & NGHTTP2_GOAWAY_TERM_ON_SEND) { |
219 | 0 | return 0; |
220 | 0 | } |
221 | | |
222 | | /* Ignore all incoming frames because we are going to tear down the |
223 | | session. */ |
224 | 0 | session->iframe.state = NGHTTP2_IB_IGN_ALL; |
225 | |
|
226 | 0 | if (reason == NULL) { |
227 | 0 | debug_data = NULL; |
228 | 0 | debug_datalen = 0; |
229 | 0 | } else { |
230 | 0 | debug_data = (const uint8_t *)reason; |
231 | 0 | debug_datalen = strlen(reason); |
232 | 0 | } |
233 | |
|
234 | 0 | rv = nghttp2_session_add_goaway(session, last_stream_id, error_code, |
235 | 0 | debug_data, debug_datalen, |
236 | 0 | NGHTTP2_GOAWAY_AUX_TERM_ON_SEND); |
237 | |
|
238 | 0 | if (rv != 0) { |
239 | 0 | return rv; |
240 | 0 | } |
241 | | |
242 | 0 | session->goaway_flags |= NGHTTP2_GOAWAY_TERM_ON_SEND; |
243 | |
|
244 | 0 | return 0; |
245 | 0 | } |
246 | | |
247 | | int nghttp2_session_terminate_session(nghttp2_session *session, |
248 | 0 | uint32_t error_code) { |
249 | 0 | return session_terminate_session(session, session->last_proc_stream_id, |
250 | 0 | error_code, NULL); |
251 | 0 | } |
252 | | |
253 | | int nghttp2_session_terminate_session2(nghttp2_session *session, |
254 | | int32_t last_stream_id, |
255 | 0 | uint32_t error_code) { |
256 | 0 | return session_terminate_session(session, last_stream_id, error_code, NULL); |
257 | 0 | } |
258 | | |
259 | | int nghttp2_session_terminate_session_with_reason(nghttp2_session *session, |
260 | | uint32_t error_code, |
261 | 0 | const char *reason) { |
262 | 0 | return session_terminate_session(session, session->last_proc_stream_id, |
263 | 0 | error_code, reason); |
264 | 0 | } |
265 | | |
266 | | int nghttp2_session_is_my_stream_id(nghttp2_session *session, |
267 | 0 | int32_t stream_id) { |
268 | 0 | int rem; |
269 | 0 | if (stream_id == 0) { |
270 | 0 | return 0; |
271 | 0 | } |
272 | 0 | rem = stream_id & 0x1; |
273 | 0 | if (session->server) { |
274 | 0 | return rem == 0; |
275 | 0 | } |
276 | 0 | return rem == 1; |
277 | 0 | } |
278 | | |
279 | | nghttp2_stream *nghttp2_session_get_stream(nghttp2_session *session, |
280 | 0 | int32_t stream_id) { |
281 | 0 | nghttp2_stream *stream; |
282 | |
|
283 | 0 | stream = (nghttp2_stream *)nghttp2_map_find(&session->streams, stream_id); |
284 | |
|
285 | 0 | if (stream == NULL || (stream->flags & NGHTTP2_STREAM_FLAG_CLOSED) || |
286 | 0 | stream->state == NGHTTP2_STREAM_IDLE) { |
287 | 0 | return NULL; |
288 | 0 | } |
289 | | |
290 | 0 | return stream; |
291 | 0 | } |
292 | | |
293 | | nghttp2_stream *nghttp2_session_get_stream_raw(nghttp2_session *session, |
294 | 0 | int32_t stream_id) { |
295 | 0 | return (nghttp2_stream *)nghttp2_map_find(&session->streams, stream_id); |
296 | 0 | } |
297 | | |
298 | 0 | static void session_inbound_frame_reset(nghttp2_session *session) { |
299 | 0 | nghttp2_inbound_frame *iframe = &session->iframe; |
300 | 0 | nghttp2_mem *mem = &session->mem; |
301 | | /* A bit risky code, since if this function is called from |
302 | | nghttp2_session_new(), we rely on the fact that |
303 | | iframe->frame.hd.type is 0, so that no free is performed. */ |
304 | 0 | switch (iframe->frame.hd.type) { |
305 | 0 | case NGHTTP2_DATA: |
306 | 0 | break; |
307 | 0 | case NGHTTP2_HEADERS: |
308 | 0 | nghttp2_frame_headers_free(&iframe->frame.headers, mem); |
309 | 0 | break; |
310 | 0 | case NGHTTP2_PRIORITY: |
311 | 0 | nghttp2_frame_priority_free(&iframe->frame.priority); |
312 | 0 | break; |
313 | 0 | case NGHTTP2_RST_STREAM: |
314 | 0 | nghttp2_frame_rst_stream_free(&iframe->frame.rst_stream); |
315 | 0 | break; |
316 | 0 | case NGHTTP2_SETTINGS: |
317 | 0 | nghttp2_frame_settings_free(&iframe->frame.settings, mem); |
318 | |
|
319 | 0 | nghttp2_mem_free(mem, iframe->iv); |
320 | |
|
321 | 0 | iframe->iv = NULL; |
322 | 0 | iframe->niv = 0; |
323 | 0 | iframe->max_niv = 0; |
324 | |
|
325 | 0 | break; |
326 | 0 | case NGHTTP2_PUSH_PROMISE: |
327 | 0 | nghttp2_frame_push_promise_free(&iframe->frame.push_promise, mem); |
328 | 0 | break; |
329 | 0 | case NGHTTP2_PING: |
330 | 0 | nghttp2_frame_ping_free(&iframe->frame.ping); |
331 | 0 | break; |
332 | 0 | case NGHTTP2_GOAWAY: |
333 | 0 | nghttp2_frame_goaway_free(&iframe->frame.goaway, mem); |
334 | 0 | break; |
335 | 0 | case NGHTTP2_WINDOW_UPDATE: |
336 | 0 | nghttp2_frame_window_update_free(&iframe->frame.window_update); |
337 | 0 | break; |
338 | 0 | default: |
339 | | /* extension frame */ |
340 | 0 | if (check_ext_type_set(session->user_recv_ext_types, |
341 | 0 | iframe->frame.hd.type)) { |
342 | 0 | nghttp2_frame_extension_free(&iframe->frame.ext); |
343 | 0 | } else { |
344 | 0 | switch (iframe->frame.hd.type) { |
345 | 0 | case NGHTTP2_ALTSVC: |
346 | 0 | if ((session->builtin_recv_ext_types & NGHTTP2_TYPEMASK_ALTSVC) == 0) { |
347 | 0 | break; |
348 | 0 | } |
349 | 0 | nghttp2_frame_altsvc_free(&iframe->frame.ext, mem); |
350 | 0 | break; |
351 | 0 | case NGHTTP2_ORIGIN: |
352 | 0 | if ((session->builtin_recv_ext_types & NGHTTP2_TYPEMASK_ORIGIN) == 0) { |
353 | 0 | break; |
354 | 0 | } |
355 | 0 | nghttp2_frame_origin_free(&iframe->frame.ext, mem); |
356 | 0 | break; |
357 | 0 | } |
358 | 0 | } |
359 | | |
360 | 0 | break; |
361 | 0 | } |
362 | | |
363 | 0 | memset(&iframe->frame, 0, sizeof(nghttp2_frame)); |
364 | 0 | memset(&iframe->ext_frame_payload, 0, sizeof(nghttp2_ext_frame_payload)); |
365 | |
|
366 | 0 | iframe->state = NGHTTP2_IB_READ_HEAD; |
367 | |
|
368 | 0 | nghttp2_buf_wrap_init(&iframe->sbuf, iframe->raw_sbuf, |
369 | 0 | sizeof(iframe->raw_sbuf)); |
370 | 0 | iframe->sbuf.mark += NGHTTP2_FRAME_HDLEN; |
371 | |
|
372 | 0 | nghttp2_buf_free(&iframe->lbuf, mem); |
373 | 0 | nghttp2_buf_wrap_init(&iframe->lbuf, NULL, 0); |
374 | |
|
375 | 0 | iframe->raw_lbuf = NULL; |
376 | |
|
377 | 0 | iframe->payloadleft = 0; |
378 | 0 | iframe->padlen = 0; |
379 | 0 | } |
380 | | |
381 | 0 | static void init_settings(nghttp2_settings_storage *settings) { |
382 | 0 | settings->header_table_size = NGHTTP2_HD_DEFAULT_MAX_BUFFER_SIZE; |
383 | 0 | settings->enable_push = 1; |
384 | 0 | settings->max_concurrent_streams = NGHTTP2_DEFAULT_MAX_CONCURRENT_STREAMS; |
385 | 0 | settings->initial_window_size = NGHTTP2_INITIAL_WINDOW_SIZE; |
386 | 0 | settings->max_frame_size = NGHTTP2_MAX_FRAME_SIZE_MIN; |
387 | 0 | settings->max_header_list_size = UINT32_MAX; |
388 | 0 | } |
389 | | |
390 | | static void active_outbound_item_reset(nghttp2_active_outbound_item *aob, |
391 | 0 | nghttp2_mem *mem) { |
392 | 0 | DEBUGF("send: reset nghttp2_active_outbound_item\n"); |
393 | 0 | DEBUGF("send: aob->item = %p\n", aob->item); |
394 | 0 | nghttp2_outbound_item_free(aob->item, mem); |
395 | 0 | nghttp2_mem_free(mem, aob->item); |
396 | 0 | aob->item = NULL; |
397 | 0 | nghttp2_bufs_reset(&aob->framebufs); |
398 | 0 | aob->state = NGHTTP2_OB_POP_ITEM; |
399 | 0 | } |
400 | | |
401 | | int nghttp2_enable_strict_preface = 1; |
402 | | |
403 | | static int session_new(nghttp2_session **session_ptr, |
404 | | const nghttp2_session_callbacks *callbacks, |
405 | | void *user_data, int server, |
406 | 0 | const nghttp2_option *option, nghttp2_mem *mem) { |
407 | 0 | int rv; |
408 | 0 | size_t nbuffer; |
409 | 0 | size_t max_deflate_dynamic_table_size = |
410 | 0 | NGHTTP2_HD_DEFAULT_MAX_DEFLATE_BUFFER_SIZE; |
411 | |
|
412 | 0 | if (mem == NULL) { |
413 | 0 | mem = nghttp2_mem_default(); |
414 | 0 | } |
415 | |
|
416 | 0 | *session_ptr = nghttp2_mem_calloc(mem, 1, sizeof(nghttp2_session)); |
417 | 0 | if (*session_ptr == NULL) { |
418 | 0 | rv = NGHTTP2_ERR_NOMEM; |
419 | 0 | goto fail_session; |
420 | 0 | } |
421 | | |
422 | 0 | (*session_ptr)->mem = *mem; |
423 | 0 | mem = &(*session_ptr)->mem; |
424 | | |
425 | | /* next_stream_id is initialized in either |
426 | | nghttp2_session_client_new2 or nghttp2_session_server_new2 */ |
427 | |
|
428 | 0 | nghttp2_stream_init(&(*session_ptr)->root, 0, NGHTTP2_STREAM_FLAG_NONE, |
429 | 0 | NGHTTP2_STREAM_IDLE, NGHTTP2_DEFAULT_WEIGHT, 0, 0, NULL, |
430 | 0 | mem); |
431 | |
|
432 | 0 | (*session_ptr)->remote_window_size = NGHTTP2_INITIAL_CONNECTION_WINDOW_SIZE; |
433 | 0 | (*session_ptr)->recv_window_size = 0; |
434 | 0 | (*session_ptr)->consumed_size = 0; |
435 | 0 | (*session_ptr)->recv_reduction = 0; |
436 | 0 | (*session_ptr)->local_window_size = NGHTTP2_INITIAL_CONNECTION_WINDOW_SIZE; |
437 | |
|
438 | 0 | (*session_ptr)->goaway_flags = NGHTTP2_GOAWAY_NONE; |
439 | 0 | (*session_ptr)->local_last_stream_id = (1u << 31) - 1; |
440 | 0 | (*session_ptr)->remote_last_stream_id = (1u << 31) - 1; |
441 | |
|
442 | 0 | (*session_ptr)->pending_local_max_concurrent_stream = |
443 | 0 | NGHTTP2_DEFAULT_MAX_CONCURRENT_STREAMS; |
444 | 0 | (*session_ptr)->pending_enable_push = 1; |
445 | |
|
446 | 0 | if (server) { |
447 | 0 | (*session_ptr)->server = 1; |
448 | 0 | } |
449 | |
|
450 | 0 | init_settings(&(*session_ptr)->remote_settings); |
451 | 0 | init_settings(&(*session_ptr)->local_settings); |
452 | |
|
453 | 0 | (*session_ptr)->max_incoming_reserved_streams = |
454 | 0 | NGHTTP2_MAX_INCOMING_RESERVED_STREAMS; |
455 | | |
456 | | /* Limit max outgoing concurrent streams to sensible value */ |
457 | 0 | (*session_ptr)->remote_settings.max_concurrent_streams = 100; |
458 | |
|
459 | 0 | (*session_ptr)->max_send_header_block_length = NGHTTP2_MAX_HEADERSLEN; |
460 | 0 | (*session_ptr)->max_outbound_ack = NGHTTP2_DEFAULT_MAX_OBQ_FLOOD_ITEM; |
461 | 0 | (*session_ptr)->max_settings = NGHTTP2_DEFAULT_MAX_SETTINGS; |
462 | |
|
463 | 0 | if (option) { |
464 | 0 | if ((option->opt_set_mask & NGHTTP2_OPT_NO_AUTO_WINDOW_UPDATE) && |
465 | 0 | option->no_auto_window_update) { |
466 | |
|
467 | 0 | (*session_ptr)->opt_flags |= NGHTTP2_OPTMASK_NO_AUTO_WINDOW_UPDATE; |
468 | 0 | } |
469 | |
|
470 | 0 | if (option->opt_set_mask & NGHTTP2_OPT_PEER_MAX_CONCURRENT_STREAMS) { |
471 | |
|
472 | 0 | (*session_ptr)->remote_settings.max_concurrent_streams = |
473 | 0 | option->peer_max_concurrent_streams; |
474 | 0 | } |
475 | |
|
476 | 0 | if (option->opt_set_mask & NGHTTP2_OPT_MAX_RESERVED_REMOTE_STREAMS) { |
477 | |
|
478 | 0 | (*session_ptr)->max_incoming_reserved_streams = |
479 | 0 | option->max_reserved_remote_streams; |
480 | 0 | } |
481 | |
|
482 | 0 | if ((option->opt_set_mask & NGHTTP2_OPT_NO_RECV_CLIENT_MAGIC) && |
483 | 0 | option->no_recv_client_magic) { |
484 | |
|
485 | 0 | (*session_ptr)->opt_flags |= NGHTTP2_OPTMASK_NO_RECV_CLIENT_MAGIC; |
486 | 0 | } |
487 | |
|
488 | 0 | if ((option->opt_set_mask & NGHTTP2_OPT_NO_HTTP_MESSAGING) && |
489 | 0 | option->no_http_messaging) { |
490 | |
|
491 | 0 | (*session_ptr)->opt_flags |= NGHTTP2_OPTMASK_NO_HTTP_MESSAGING; |
492 | 0 | } |
493 | |
|
494 | 0 | if (option->opt_set_mask & NGHTTP2_OPT_USER_RECV_EXT_TYPES) { |
495 | 0 | memcpy((*session_ptr)->user_recv_ext_types, option->user_recv_ext_types, |
496 | 0 | sizeof((*session_ptr)->user_recv_ext_types)); |
497 | 0 | } |
498 | |
|
499 | 0 | if (option->opt_set_mask & NGHTTP2_OPT_BUILTIN_RECV_EXT_TYPES) { |
500 | 0 | (*session_ptr)->builtin_recv_ext_types = option->builtin_recv_ext_types; |
501 | 0 | } |
502 | |
|
503 | 0 | if ((option->opt_set_mask & NGHTTP2_OPT_NO_AUTO_PING_ACK) && |
504 | 0 | option->no_auto_ping_ack) { |
505 | 0 | (*session_ptr)->opt_flags |= NGHTTP2_OPTMASK_NO_AUTO_PING_ACK; |
506 | 0 | } |
507 | |
|
508 | 0 | if (option->opt_set_mask & NGHTTP2_OPT_MAX_SEND_HEADER_BLOCK_LENGTH) { |
509 | 0 | (*session_ptr)->max_send_header_block_length = |
510 | 0 | option->max_send_header_block_length; |
511 | 0 | } |
512 | |
|
513 | 0 | if (option->opt_set_mask & NGHTTP2_OPT_MAX_DEFLATE_DYNAMIC_TABLE_SIZE) { |
514 | 0 | max_deflate_dynamic_table_size = option->max_deflate_dynamic_table_size; |
515 | 0 | } |
516 | |
|
517 | 0 | if ((option->opt_set_mask & NGHTTP2_OPT_NO_CLOSED_STREAMS) && |
518 | 0 | option->no_closed_streams) { |
519 | 0 | (*session_ptr)->opt_flags |= NGHTTP2_OPTMASK_NO_CLOSED_STREAMS; |
520 | 0 | } |
521 | |
|
522 | 0 | if (option->opt_set_mask & NGHTTP2_OPT_MAX_OUTBOUND_ACK) { |
523 | 0 | (*session_ptr)->max_outbound_ack = option->max_outbound_ack; |
524 | 0 | } |
525 | |
|
526 | 0 | if ((option->opt_set_mask & NGHTTP2_OPT_MAX_SETTINGS) && |
527 | 0 | option->max_settings) { |
528 | 0 | (*session_ptr)->max_settings = option->max_settings; |
529 | 0 | } |
530 | 0 | } |
531 | |
|
532 | 0 | rv = nghttp2_hd_deflate_init2(&(*session_ptr)->hd_deflater, |
533 | 0 | max_deflate_dynamic_table_size, mem); |
534 | 0 | if (rv != 0) { |
535 | 0 | goto fail_hd_deflater; |
536 | 0 | } |
537 | 0 | rv = nghttp2_hd_inflate_init(&(*session_ptr)->hd_inflater, mem); |
538 | 0 | if (rv != 0) { |
539 | 0 | goto fail_hd_inflater; |
540 | 0 | } |
541 | 0 | rv = nghttp2_map_init(&(*session_ptr)->streams, mem); |
542 | 0 | if (rv != 0) { |
543 | 0 | goto fail_map; |
544 | 0 | } |
545 | | |
546 | 0 | nbuffer = ((*session_ptr)->max_send_header_block_length + |
547 | 0 | NGHTTP2_FRAMEBUF_CHUNKLEN - 1) / |
548 | 0 | NGHTTP2_FRAMEBUF_CHUNKLEN; |
549 | |
|
550 | 0 | if (nbuffer == 0) { |
551 | 0 | nbuffer = 1; |
552 | 0 | } |
553 | | |
554 | | /* 1 for Pad Field. */ |
555 | 0 | rv = nghttp2_bufs_init3(&(*session_ptr)->aob.framebufs, |
556 | 0 | NGHTTP2_FRAMEBUF_CHUNKLEN, nbuffer, 1, |
557 | 0 | NGHTTP2_FRAME_HDLEN + 1, mem); |
558 | 0 | if (rv != 0) { |
559 | 0 | goto fail_aob_framebuf; |
560 | 0 | } |
561 | | |
562 | 0 | active_outbound_item_reset(&(*session_ptr)->aob, mem); |
563 | |
|
564 | 0 | (*session_ptr)->callbacks = *callbacks; |
565 | 0 | (*session_ptr)->user_data = user_data; |
566 | |
|
567 | 0 | session_inbound_frame_reset(*session_ptr); |
568 | |
|
569 | 0 | if (nghttp2_enable_strict_preface) { |
570 | 0 | nghttp2_inbound_frame *iframe = &(*session_ptr)->iframe; |
571 | |
|
572 | 0 | if (server && ((*session_ptr)->opt_flags & |
573 | 0 | NGHTTP2_OPTMASK_NO_RECV_CLIENT_MAGIC) == 0) { |
574 | 0 | iframe->state = NGHTTP2_IB_READ_CLIENT_MAGIC; |
575 | 0 | iframe->payloadleft = NGHTTP2_CLIENT_MAGIC_LEN; |
576 | 0 | } else { |
577 | 0 | iframe->state = NGHTTP2_IB_READ_FIRST_SETTINGS; |
578 | 0 | } |
579 | |
|
580 | 0 | if (!server) { |
581 | 0 | (*session_ptr)->aob.state = NGHTTP2_OB_SEND_CLIENT_MAGIC; |
582 | 0 | nghttp2_bufs_add(&(*session_ptr)->aob.framebufs, NGHTTP2_CLIENT_MAGIC, |
583 | 0 | NGHTTP2_CLIENT_MAGIC_LEN); |
584 | 0 | } |
585 | 0 | } |
586 | |
|
587 | 0 | return 0; |
588 | | |
589 | 0 | fail_aob_framebuf: |
590 | 0 | nghttp2_map_free(&(*session_ptr)->streams); |
591 | 0 | fail_map: |
592 | 0 | nghttp2_hd_inflate_free(&(*session_ptr)->hd_inflater); |
593 | 0 | fail_hd_inflater: |
594 | 0 | nghttp2_hd_deflate_free(&(*session_ptr)->hd_deflater); |
595 | 0 | fail_hd_deflater: |
596 | 0 | nghttp2_mem_free(mem, *session_ptr); |
597 | 0 | fail_session: |
598 | 0 | return rv; |
599 | 0 | } |
600 | | |
601 | | int nghttp2_session_client_new(nghttp2_session **session_ptr, |
602 | | const nghttp2_session_callbacks *callbacks, |
603 | 0 | void *user_data) { |
604 | 0 | return nghttp2_session_client_new3(session_ptr, callbacks, user_data, NULL, |
605 | 0 | NULL); |
606 | 0 | } |
607 | | |
608 | | int nghttp2_session_client_new2(nghttp2_session **session_ptr, |
609 | | const nghttp2_session_callbacks *callbacks, |
610 | 0 | void *user_data, const nghttp2_option *option) { |
611 | 0 | return nghttp2_session_client_new3(session_ptr, callbacks, user_data, option, |
612 | 0 | NULL); |
613 | 0 | } |
614 | | |
615 | | int nghttp2_session_client_new3(nghttp2_session **session_ptr, |
616 | | const nghttp2_session_callbacks *callbacks, |
617 | | void *user_data, const nghttp2_option *option, |
618 | 0 | nghttp2_mem *mem) { |
619 | 0 | int rv; |
620 | 0 | nghttp2_session *session; |
621 | |
|
622 | 0 | rv = session_new(&session, callbacks, user_data, 0, option, mem); |
623 | |
|
624 | 0 | if (rv != 0) { |
625 | 0 | return rv; |
626 | 0 | } |
627 | | /* IDs for use in client */ |
628 | 0 | session->next_stream_id = 1; |
629 | |
|
630 | 0 | *session_ptr = session; |
631 | |
|
632 | 0 | return 0; |
633 | 0 | } |
634 | | |
635 | | int nghttp2_session_server_new(nghttp2_session **session_ptr, |
636 | | const nghttp2_session_callbacks *callbacks, |
637 | 0 | void *user_data) { |
638 | 0 | return nghttp2_session_server_new3(session_ptr, callbacks, user_data, NULL, |
639 | 0 | NULL); |
640 | 0 | } |
641 | | |
642 | | int nghttp2_session_server_new2(nghttp2_session **session_ptr, |
643 | | const nghttp2_session_callbacks *callbacks, |
644 | 0 | void *user_data, const nghttp2_option *option) { |
645 | 0 | return nghttp2_session_server_new3(session_ptr, callbacks, user_data, option, |
646 | 0 | NULL); |
647 | 0 | } |
648 | | |
649 | | int nghttp2_session_server_new3(nghttp2_session **session_ptr, |
650 | | const nghttp2_session_callbacks *callbacks, |
651 | | void *user_data, const nghttp2_option *option, |
652 | 0 | nghttp2_mem *mem) { |
653 | 0 | int rv; |
654 | 0 | nghttp2_session *session; |
655 | |
|
656 | 0 | rv = session_new(&session, callbacks, user_data, 1, option, mem); |
657 | |
|
658 | 0 | if (rv != 0) { |
659 | 0 | return rv; |
660 | 0 | } |
661 | | /* IDs for use in client */ |
662 | 0 | session->next_stream_id = 2; |
663 | |
|
664 | 0 | *session_ptr = session; |
665 | |
|
666 | 0 | return 0; |
667 | 0 | } |
668 | | |
669 | 0 | static int free_streams(nghttp2_map_entry *entry, void *ptr) { |
670 | 0 | nghttp2_session *session; |
671 | 0 | nghttp2_stream *stream; |
672 | 0 | nghttp2_outbound_item *item; |
673 | 0 | nghttp2_mem *mem; |
674 | |
|
675 | 0 | session = (nghttp2_session *)ptr; |
676 | 0 | mem = &session->mem; |
677 | 0 | stream = (nghttp2_stream *)entry; |
678 | 0 | item = stream->item; |
679 | |
|
680 | 0 | if (item && !item->queued && item != session->aob.item) { |
681 | 0 | nghttp2_outbound_item_free(item, mem); |
682 | 0 | nghttp2_mem_free(mem, item); |
683 | 0 | } |
684 | |
|
685 | 0 | nghttp2_stream_free(stream); |
686 | 0 | nghttp2_mem_free(mem, stream); |
687 | |
|
688 | 0 | return 0; |
689 | 0 | } |
690 | | |
691 | 0 | static void ob_q_free(nghttp2_outbound_queue *q, nghttp2_mem *mem) { |
692 | 0 | nghttp2_outbound_item *item, *next; |
693 | 0 | for (item = q->head; item;) { |
694 | 0 | next = item->qnext; |
695 | 0 | nghttp2_outbound_item_free(item, mem); |
696 | 0 | nghttp2_mem_free(mem, item); |
697 | 0 | item = next; |
698 | 0 | } |
699 | 0 | } |
700 | | |
701 | | static int inflight_settings_new(nghttp2_inflight_settings **settings_ptr, |
702 | | const nghttp2_settings_entry *iv, size_t niv, |
703 | 0 | nghttp2_mem *mem) { |
704 | 0 | *settings_ptr = nghttp2_mem_malloc(mem, sizeof(nghttp2_inflight_settings)); |
705 | 0 | if (!*settings_ptr) { |
706 | 0 | return NGHTTP2_ERR_NOMEM; |
707 | 0 | } |
708 | | |
709 | 0 | if (niv > 0) { |
710 | 0 | (*settings_ptr)->iv = nghttp2_frame_iv_copy(iv, niv, mem); |
711 | 0 | if (!(*settings_ptr)->iv) { |
712 | 0 | nghttp2_mem_free(mem, *settings_ptr); |
713 | 0 | return NGHTTP2_ERR_NOMEM; |
714 | 0 | } |
715 | 0 | } else { |
716 | 0 | (*settings_ptr)->iv = NULL; |
717 | 0 | } |
718 | | |
719 | 0 | (*settings_ptr)->niv = niv; |
720 | 0 | (*settings_ptr)->next = NULL; |
721 | |
|
722 | 0 | return 0; |
723 | 0 | } |
724 | | |
725 | | static void inflight_settings_del(nghttp2_inflight_settings *settings, |
726 | 0 | nghttp2_mem *mem) { |
727 | 0 | if (!settings) { |
728 | 0 | return; |
729 | 0 | } |
730 | | |
731 | 0 | nghttp2_mem_free(mem, settings->iv); |
732 | 0 | nghttp2_mem_free(mem, settings); |
733 | 0 | } |
734 | | |
735 | 0 | void nghttp2_session_del(nghttp2_session *session) { |
736 | 0 | nghttp2_mem *mem; |
737 | 0 | nghttp2_inflight_settings *settings; |
738 | |
|
739 | 0 | if (session == NULL) { |
740 | 0 | return; |
741 | 0 | } |
742 | | |
743 | 0 | mem = &session->mem; |
744 | |
|
745 | 0 | for (settings = session->inflight_settings_head; settings;) { |
746 | 0 | nghttp2_inflight_settings *next = settings->next; |
747 | 0 | inflight_settings_del(settings, mem); |
748 | 0 | settings = next; |
749 | 0 | } |
750 | |
|
751 | 0 | nghttp2_stream_free(&session->root); |
752 | | |
753 | | /* Have to free streams first, so that we can check |
754 | | stream->item->queued */ |
755 | 0 | nghttp2_map_each_free(&session->streams, free_streams, session); |
756 | 0 | nghttp2_map_free(&session->streams); |
757 | |
|
758 | 0 | ob_q_free(&session->ob_urgent, mem); |
759 | 0 | ob_q_free(&session->ob_reg, mem); |
760 | 0 | ob_q_free(&session->ob_syn, mem); |
761 | |
|
762 | 0 | active_outbound_item_reset(&session->aob, mem); |
763 | 0 | session_inbound_frame_reset(session); |
764 | 0 | nghttp2_hd_deflate_free(&session->hd_deflater); |
765 | 0 | nghttp2_hd_inflate_free(&session->hd_inflater); |
766 | 0 | nghttp2_bufs_free(&session->aob.framebufs); |
767 | 0 | nghttp2_mem_free(mem, session); |
768 | 0 | } |
769 | | |
770 | | int nghttp2_session_reprioritize_stream( |
771 | | nghttp2_session *session, nghttp2_stream *stream, |
772 | 0 | const nghttp2_priority_spec *pri_spec_in) { |
773 | 0 | int rv; |
774 | 0 | nghttp2_stream *dep_stream = NULL; |
775 | 0 | nghttp2_priority_spec pri_spec_default; |
776 | 0 | const nghttp2_priority_spec *pri_spec = pri_spec_in; |
777 | |
|
778 | 0 | assert(pri_spec->stream_id != stream->stream_id); |
779 | | |
780 | 0 | if (!nghttp2_stream_in_dep_tree(stream)) { |
781 | 0 | return 0; |
782 | 0 | } |
783 | | |
784 | 0 | if (pri_spec->stream_id != 0) { |
785 | 0 | dep_stream = nghttp2_session_get_stream_raw(session, pri_spec->stream_id); |
786 | |
|
787 | 0 | if (!dep_stream && |
788 | 0 | session_detect_idle_stream(session, pri_spec->stream_id)) { |
789 | |
|
790 | 0 | nghttp2_priority_spec_default_init(&pri_spec_default); |
791 | |
|
792 | 0 | dep_stream = nghttp2_session_open_stream( |
793 | 0 | session, pri_spec->stream_id, NGHTTP2_FLAG_NONE, &pri_spec_default, |
794 | 0 | NGHTTP2_STREAM_IDLE, NULL); |
795 | |
|
796 | 0 | if (dep_stream == NULL) { |
797 | 0 | return NGHTTP2_ERR_NOMEM; |
798 | 0 | } |
799 | 0 | } else if (!dep_stream || !nghttp2_stream_in_dep_tree(dep_stream)) { |
800 | 0 | nghttp2_priority_spec_default_init(&pri_spec_default); |
801 | 0 | pri_spec = &pri_spec_default; |
802 | 0 | } |
803 | 0 | } |
804 | | |
805 | 0 | if (pri_spec->stream_id == 0) { |
806 | 0 | dep_stream = &session->root; |
807 | 0 | } else if (nghttp2_stream_dep_find_ancestor(dep_stream, stream)) { |
808 | 0 | DEBUGF("stream: cycle detected, dep_stream(%p)=%d stream(%p)=%d\n", |
809 | 0 | dep_stream, dep_stream->stream_id, stream, stream->stream_id); |
810 | |
|
811 | 0 | nghttp2_stream_dep_remove_subtree(dep_stream); |
812 | 0 | rv = nghttp2_stream_dep_add_subtree(stream->dep_prev, dep_stream); |
813 | 0 | if (rv != 0) { |
814 | 0 | return rv; |
815 | 0 | } |
816 | 0 | } |
817 | | |
818 | 0 | assert(dep_stream); |
819 | | |
820 | 0 | if (dep_stream == stream->dep_prev && !pri_spec->exclusive) { |
821 | | /* This is minor optimization when just weight is changed. */ |
822 | 0 | nghttp2_stream_change_weight(stream, pri_spec->weight); |
823 | |
|
824 | 0 | return 0; |
825 | 0 | } |
826 | | |
827 | 0 | nghttp2_stream_dep_remove_subtree(stream); |
828 | | |
829 | | /* We have to update weight after removing stream from tree */ |
830 | 0 | stream->weight = pri_spec->weight; |
831 | |
|
832 | 0 | if (pri_spec->exclusive) { |
833 | 0 | rv = nghttp2_stream_dep_insert_subtree(dep_stream, stream); |
834 | 0 | } else { |
835 | 0 | rv = nghttp2_stream_dep_add_subtree(dep_stream, stream); |
836 | 0 | } |
837 | |
|
838 | 0 | if (rv != 0) { |
839 | 0 | return rv; |
840 | 0 | } |
841 | | |
842 | 0 | return 0; |
843 | 0 | } |
844 | | |
845 | | int nghttp2_session_add_item(nghttp2_session *session, |
846 | 0 | nghttp2_outbound_item *item) { |
847 | | /* TODO Return error if stream is not found for the frame requiring |
848 | | stream presence. */ |
849 | 0 | int rv = 0; |
850 | 0 | nghttp2_stream *stream; |
851 | 0 | nghttp2_frame *frame; |
852 | |
|
853 | 0 | frame = &item->frame; |
854 | 0 | stream = nghttp2_session_get_stream(session, frame->hd.stream_id); |
855 | |
|
856 | 0 | switch (frame->hd.type) { |
857 | 0 | case NGHTTP2_DATA: |
858 | 0 | if (!stream) { |
859 | 0 | return NGHTTP2_ERR_STREAM_CLOSED; |
860 | 0 | } |
861 | | |
862 | 0 | if (stream->item) { |
863 | 0 | return NGHTTP2_ERR_DATA_EXIST; |
864 | 0 | } |
865 | | |
866 | 0 | rv = nghttp2_stream_attach_item(stream, item); |
867 | |
|
868 | 0 | if (rv != 0) { |
869 | 0 | return rv; |
870 | 0 | } |
871 | | |
872 | 0 | return 0; |
873 | 0 | case NGHTTP2_HEADERS: |
874 | | /* We push request HEADERS and push response HEADERS to |
875 | | dedicated queue because their transmission is affected by |
876 | | SETTINGS_MAX_CONCURRENT_STREAMS */ |
877 | | /* TODO If 2 HEADERS are submitted for reserved stream, then |
878 | | both of them are queued into ob_syn, which is not |
879 | | desirable. */ |
880 | 0 | if (frame->headers.cat == NGHTTP2_HCAT_REQUEST || |
881 | 0 | (stream && stream->state == NGHTTP2_STREAM_RESERVED)) { |
882 | 0 | nghttp2_outbound_queue_push(&session->ob_syn, item); |
883 | 0 | item->queued = 1; |
884 | 0 | return 0; |
885 | 0 | ; |
886 | 0 | } |
887 | | |
888 | 0 | nghttp2_outbound_queue_push(&session->ob_reg, item); |
889 | 0 | item->queued = 1; |
890 | 0 | return 0; |
891 | 0 | case NGHTTP2_SETTINGS: |
892 | 0 | case NGHTTP2_PING: |
893 | 0 | nghttp2_outbound_queue_push(&session->ob_urgent, item); |
894 | 0 | item->queued = 1; |
895 | 0 | return 0; |
896 | 0 | case NGHTTP2_RST_STREAM: |
897 | 0 | if (stream) { |
898 | 0 | stream->state = NGHTTP2_STREAM_CLOSING; |
899 | 0 | } |
900 | 0 | nghttp2_outbound_queue_push(&session->ob_reg, item); |
901 | 0 | item->queued = 1; |
902 | 0 | return 0; |
903 | 0 | case NGHTTP2_PUSH_PROMISE: { |
904 | 0 | nghttp2_headers_aux_data *aux_data; |
905 | 0 | nghttp2_priority_spec pri_spec; |
906 | |
|
907 | 0 | aux_data = &item->aux_data.headers; |
908 | |
|
909 | 0 | if (!stream) { |
910 | 0 | return NGHTTP2_ERR_STREAM_CLOSED; |
911 | 0 | } |
912 | | |
913 | 0 | nghttp2_priority_spec_init(&pri_spec, stream->stream_id, |
914 | 0 | NGHTTP2_DEFAULT_WEIGHT, 0); |
915 | |
|
916 | 0 | if (!nghttp2_session_open_stream( |
917 | 0 | session, frame->push_promise.promised_stream_id, |
918 | 0 | NGHTTP2_STREAM_FLAG_NONE, &pri_spec, NGHTTP2_STREAM_RESERVED, |
919 | 0 | aux_data->stream_user_data)) { |
920 | 0 | return NGHTTP2_ERR_NOMEM; |
921 | 0 | } |
922 | | |
923 | | /* We don't have to call nghttp2_session_adjust_closed_stream() |
924 | | here, since stream->stream_id is local stream_id, and it does |
925 | | not affect closed stream count. */ |
926 | | |
927 | 0 | nghttp2_outbound_queue_push(&session->ob_reg, item); |
928 | 0 | item->queued = 1; |
929 | |
|
930 | 0 | return 0; |
931 | 0 | } |
932 | 0 | case NGHTTP2_WINDOW_UPDATE: |
933 | 0 | if (stream) { |
934 | 0 | stream->window_update_queued = 1; |
935 | 0 | } else if (frame->hd.stream_id == 0) { |
936 | 0 | session->window_update_queued = 1; |
937 | 0 | } |
938 | 0 | nghttp2_outbound_queue_push(&session->ob_reg, item); |
939 | 0 | item->queued = 1; |
940 | 0 | return 0; |
941 | 0 | default: |
942 | 0 | nghttp2_outbound_queue_push(&session->ob_reg, item); |
943 | 0 | item->queued = 1; |
944 | 0 | return 0; |
945 | 0 | } |
946 | 0 | } |
947 | | |
948 | | int nghttp2_session_add_rst_stream(nghttp2_session *session, int32_t stream_id, |
949 | 0 | uint32_t error_code) { |
950 | 0 | int rv; |
951 | 0 | nghttp2_outbound_item *item; |
952 | 0 | nghttp2_frame *frame; |
953 | 0 | nghttp2_stream *stream; |
954 | 0 | nghttp2_mem *mem; |
955 | |
|
956 | 0 | mem = &session->mem; |
957 | 0 | stream = nghttp2_session_get_stream(session, stream_id); |
958 | 0 | if (stream && stream->state == NGHTTP2_STREAM_CLOSING) { |
959 | 0 | return 0; |
960 | 0 | } |
961 | | |
962 | | /* Cancel pending request HEADERS in ob_syn if this RST_STREAM |
963 | | refers to that stream. */ |
964 | 0 | if (!session->server && nghttp2_session_is_my_stream_id(session, stream_id) && |
965 | 0 | nghttp2_outbound_queue_top(&session->ob_syn)) { |
966 | 0 | nghttp2_headers_aux_data *aux_data; |
967 | 0 | nghttp2_frame *headers_frame; |
968 | |
|
969 | 0 | headers_frame = &nghttp2_outbound_queue_top(&session->ob_syn)->frame; |
970 | 0 | assert(headers_frame->hd.type == NGHTTP2_HEADERS); |
971 | | |
972 | 0 | if (headers_frame->hd.stream_id <= stream_id && |
973 | 0 | (uint32_t)stream_id < session->next_stream_id) { |
974 | |
|
975 | 0 | for (item = session->ob_syn.head; item; item = item->qnext) { |
976 | 0 | aux_data = &item->aux_data.headers; |
977 | |
|
978 | 0 | if (item->frame.hd.stream_id < stream_id) { |
979 | 0 | continue; |
980 | 0 | } |
981 | | |
982 | | /* stream_id in ob_syn queue must be strictly increasing. If |
983 | | we found larger ID, then we can break here. */ |
984 | 0 | if (item->frame.hd.stream_id > stream_id || aux_data->canceled) { |
985 | 0 | break; |
986 | 0 | } |
987 | | |
988 | 0 | aux_data->error_code = error_code; |
989 | 0 | aux_data->canceled = 1; |
990 | |
|
991 | 0 | return 0; |
992 | 0 | } |
993 | 0 | } |
994 | 0 | } |
995 | | |
996 | 0 | item = nghttp2_mem_malloc(mem, sizeof(nghttp2_outbound_item)); |
997 | 0 | if (item == NULL) { |
998 | 0 | return NGHTTP2_ERR_NOMEM; |
999 | 0 | } |
1000 | | |
1001 | 0 | nghttp2_outbound_item_init(item); |
1002 | |
|
1003 | 0 | frame = &item->frame; |
1004 | |
|
1005 | 0 | nghttp2_frame_rst_stream_init(&frame->rst_stream, stream_id, error_code); |
1006 | 0 | rv = nghttp2_session_add_item(session, item); |
1007 | 0 | if (rv != 0) { |
1008 | 0 | nghttp2_frame_rst_stream_free(&frame->rst_stream); |
1009 | 0 | nghttp2_mem_free(mem, item); |
1010 | 0 | return rv; |
1011 | 0 | } |
1012 | 0 | return 0; |
1013 | 0 | } |
1014 | | |
1015 | | nghttp2_stream *nghttp2_session_open_stream(nghttp2_session *session, |
1016 | | int32_t stream_id, uint8_t flags, |
1017 | | nghttp2_priority_spec *pri_spec_in, |
1018 | | nghttp2_stream_state initial_state, |
1019 | 0 | void *stream_user_data) { |
1020 | 0 | int rv; |
1021 | 0 | nghttp2_stream *stream; |
1022 | 0 | nghttp2_stream *dep_stream = NULL; |
1023 | 0 | int stream_alloc = 0; |
1024 | 0 | nghttp2_priority_spec pri_spec_default; |
1025 | 0 | nghttp2_priority_spec *pri_spec = pri_spec_in; |
1026 | 0 | nghttp2_mem *mem; |
1027 | |
|
1028 | 0 | mem = &session->mem; |
1029 | 0 | stream = nghttp2_session_get_stream_raw(session, stream_id); |
1030 | |
|
1031 | 0 | if (stream) { |
1032 | 0 | assert(stream->state == NGHTTP2_STREAM_IDLE); |
1033 | 0 | assert(nghttp2_stream_in_dep_tree(stream)); |
1034 | 0 | nghttp2_session_detach_idle_stream(session, stream); |
1035 | 0 | rv = nghttp2_stream_dep_remove(stream); |
1036 | 0 | if (rv != 0) { |
1037 | 0 | return NULL; |
1038 | 0 | } |
1039 | 0 | } else { |
1040 | 0 | stream = nghttp2_mem_malloc(mem, sizeof(nghttp2_stream)); |
1041 | 0 | if (stream == NULL) { |
1042 | 0 | return NULL; |
1043 | 0 | } |
1044 | | |
1045 | 0 | stream_alloc = 1; |
1046 | 0 | } |
1047 | | |
1048 | 0 | if (pri_spec->stream_id != 0) { |
1049 | 0 | dep_stream = nghttp2_session_get_stream_raw(session, pri_spec->stream_id); |
1050 | |
|
1051 | 0 | if (!dep_stream && |
1052 | 0 | session_detect_idle_stream(session, pri_spec->stream_id)) { |
1053 | | /* Depends on idle stream, which does not exist in memory. |
1054 | | Assign default priority for it. */ |
1055 | 0 | nghttp2_priority_spec_default_init(&pri_spec_default); |
1056 | |
|
1057 | 0 | dep_stream = nghttp2_session_open_stream( |
1058 | 0 | session, pri_spec->stream_id, NGHTTP2_FLAG_NONE, &pri_spec_default, |
1059 | 0 | NGHTTP2_STREAM_IDLE, NULL); |
1060 | |
|
1061 | 0 | if (dep_stream == NULL) { |
1062 | 0 | if (stream_alloc) { |
1063 | 0 | nghttp2_mem_free(mem, stream); |
1064 | 0 | } |
1065 | |
|
1066 | 0 | return NULL; |
1067 | 0 | } |
1068 | 0 | } else if (!dep_stream || !nghttp2_stream_in_dep_tree(dep_stream)) { |
1069 | | /* If dep_stream is not part of dependency tree, stream will get |
1070 | | default priority. This handles the case when |
1071 | | pri_spec->stream_id == stream_id. This happens because we |
1072 | | don't check pri_spec->stream_id against new stream ID in |
1073 | | nghttp2_submit_request. This also handles the case when idle |
1074 | | stream created by PRIORITY frame was opened. Somehow we |
1075 | | first remove the idle stream from dependency tree. This is |
1076 | | done to simplify code base, but ideally we should retain old |
1077 | | dependency. But I'm not sure this adds values. */ |
1078 | 0 | nghttp2_priority_spec_default_init(&pri_spec_default); |
1079 | 0 | pri_spec = &pri_spec_default; |
1080 | 0 | } |
1081 | 0 | } |
1082 | | |
1083 | 0 | if (initial_state == NGHTTP2_STREAM_RESERVED) { |
1084 | 0 | flags |= NGHTTP2_STREAM_FLAG_PUSH; |
1085 | 0 | } |
1086 | |
|
1087 | 0 | if (stream_alloc) { |
1088 | 0 | nghttp2_stream_init(stream, stream_id, flags, initial_state, |
1089 | 0 | pri_spec->weight, |
1090 | 0 | (int32_t)session->remote_settings.initial_window_size, |
1091 | 0 | (int32_t)session->local_settings.initial_window_size, |
1092 | 0 | stream_user_data, mem); |
1093 | |
|
1094 | 0 | rv = nghttp2_map_insert(&session->streams, &stream->map_entry); |
1095 | 0 | if (rv != 0) { |
1096 | 0 | nghttp2_stream_free(stream); |
1097 | 0 | nghttp2_mem_free(mem, stream); |
1098 | 0 | return NULL; |
1099 | 0 | } |
1100 | 0 | } else { |
1101 | 0 | stream->flags = flags; |
1102 | 0 | stream->state = initial_state; |
1103 | 0 | stream->weight = pri_spec->weight; |
1104 | 0 | stream->stream_user_data = stream_user_data; |
1105 | 0 | } |
1106 | | |
1107 | 0 | switch (initial_state) { |
1108 | 0 | case NGHTTP2_STREAM_RESERVED: |
1109 | 0 | if (nghttp2_session_is_my_stream_id(session, stream_id)) { |
1110 | | /* reserved (local) */ |
1111 | 0 | nghttp2_stream_shutdown(stream, NGHTTP2_SHUT_RD); |
1112 | 0 | } else { |
1113 | | /* reserved (remote) */ |
1114 | 0 | nghttp2_stream_shutdown(stream, NGHTTP2_SHUT_WR); |
1115 | 0 | ++session->num_incoming_reserved_streams; |
1116 | 0 | } |
1117 | | /* Reserved stream does not count in the concurrent streams |
1118 | | limit. That is one of the DOS vector. */ |
1119 | 0 | break; |
1120 | 0 | case NGHTTP2_STREAM_IDLE: |
1121 | | /* Idle stream does not count toward the concurrent streams limit. |
1122 | | This is used as anchor node in dependency tree. */ |
1123 | 0 | nghttp2_session_keep_idle_stream(session, stream); |
1124 | 0 | break; |
1125 | 0 | default: |
1126 | 0 | if (nghttp2_session_is_my_stream_id(session, stream_id)) { |
1127 | 0 | ++session->num_outgoing_streams; |
1128 | 0 | } else { |
1129 | 0 | ++session->num_incoming_streams; |
1130 | 0 | } |
1131 | 0 | } |
1132 | | |
1133 | 0 | if (pri_spec->stream_id == 0) { |
1134 | 0 | dep_stream = &session->root; |
1135 | 0 | } |
1136 | |
|
1137 | 0 | assert(dep_stream); |
1138 | | |
1139 | 0 | if (pri_spec->exclusive) { |
1140 | 0 | rv = nghttp2_stream_dep_insert(dep_stream, stream); |
1141 | 0 | if (rv != 0) { |
1142 | 0 | return NULL; |
1143 | 0 | } |
1144 | 0 | } else { |
1145 | 0 | nghttp2_stream_dep_add(dep_stream, stream); |
1146 | 0 | } |
1147 | | |
1148 | 0 | return stream; |
1149 | 0 | } |
1150 | | |
1151 | | int nghttp2_session_close_stream(nghttp2_session *session, int32_t stream_id, |
1152 | 0 | uint32_t error_code) { |
1153 | 0 | int rv; |
1154 | 0 | nghttp2_stream *stream; |
1155 | 0 | nghttp2_mem *mem; |
1156 | 0 | int is_my_stream_id; |
1157 | |
|
1158 | 0 | mem = &session->mem; |
1159 | 0 | stream = nghttp2_session_get_stream(session, stream_id); |
1160 | |
|
1161 | 0 | if (!stream) { |
1162 | 0 | return NGHTTP2_ERR_INVALID_ARGUMENT; |
1163 | 0 | } |
1164 | | |
1165 | 0 | DEBUGF("stream: stream(%p)=%d close\n", stream, stream->stream_id); |
1166 | |
|
1167 | 0 | if (stream->item) { |
1168 | 0 | nghttp2_outbound_item *item; |
1169 | |
|
1170 | 0 | item = stream->item; |
1171 | |
|
1172 | 0 | rv = nghttp2_stream_detach_item(stream); |
1173 | |
|
1174 | 0 | if (rv != 0) { |
1175 | 0 | return rv; |
1176 | 0 | } |
1177 | | |
1178 | | /* If item is queued, it will be deleted when it is popped |
1179 | | (nghttp2_session_prep_frame() will fail). If session->aob.item |
1180 | | points to this item, let active_outbound_item_reset() |
1181 | | free the item. */ |
1182 | 0 | if (!item->queued && item != session->aob.item) { |
1183 | 0 | nghttp2_outbound_item_free(item, mem); |
1184 | 0 | nghttp2_mem_free(mem, item); |
1185 | 0 | } |
1186 | 0 | } |
1187 | | |
1188 | | /* We call on_stream_close_callback even if stream->state is |
1189 | | NGHTTP2_STREAM_INITIAL. This will happen while sending request |
1190 | | HEADERS, a local endpoint receives RST_STREAM for that stream. It |
1191 | | may be PROTOCOL_ERROR, but without notifying stream closure will |
1192 | | hang the stream in a local endpoint. |
1193 | | */ |
1194 | | |
1195 | 0 | if (session->callbacks.on_stream_close_callback) { |
1196 | 0 | if (session->callbacks.on_stream_close_callback( |
1197 | 0 | session, stream_id, error_code, session->user_data) != 0) { |
1198 | |
|
1199 | 0 | return NGHTTP2_ERR_CALLBACK_FAILURE; |
1200 | 0 | } |
1201 | 0 | } |
1202 | | |
1203 | 0 | is_my_stream_id = nghttp2_session_is_my_stream_id(session, stream_id); |
1204 | | |
1205 | | /* pushed streams which is not opened yet is not counted toward max |
1206 | | concurrent limits */ |
1207 | 0 | if ((stream->flags & NGHTTP2_STREAM_FLAG_PUSH)) { |
1208 | 0 | if (!is_my_stream_id) { |
1209 | 0 | --session->num_incoming_reserved_streams; |
1210 | 0 | } |
1211 | 0 | } else { |
1212 | 0 | if (is_my_stream_id) { |
1213 | 0 | --session->num_outgoing_streams; |
1214 | 0 | } else { |
1215 | 0 | --session->num_incoming_streams; |
1216 | 0 | } |
1217 | 0 | } |
1218 | | |
1219 | | /* Closes both directions just in case they are not closed yet */ |
1220 | 0 | stream->flags |= NGHTTP2_STREAM_FLAG_CLOSED; |
1221 | |
|
1222 | 0 | if ((session->opt_flags & NGHTTP2_OPTMASK_NO_CLOSED_STREAMS) == 0 && |
1223 | 0 | session->server && !is_my_stream_id && |
1224 | 0 | nghttp2_stream_in_dep_tree(stream)) { |
1225 | | /* On server side, retain stream at most MAX_CONCURRENT_STREAMS |
1226 | | combined with the current active incoming streams to make |
1227 | | dependency tree work better. */ |
1228 | 0 | nghttp2_session_keep_closed_stream(session, stream); |
1229 | 0 | } else { |
1230 | 0 | rv = nghttp2_session_destroy_stream(session, stream); |
1231 | 0 | if (rv != 0) { |
1232 | 0 | return rv; |
1233 | 0 | } |
1234 | 0 | } |
1235 | | |
1236 | 0 | return 0; |
1237 | 0 | } |
1238 | | |
1239 | | int nghttp2_session_destroy_stream(nghttp2_session *session, |
1240 | 0 | nghttp2_stream *stream) { |
1241 | 0 | nghttp2_mem *mem; |
1242 | 0 | int rv; |
1243 | |
|
1244 | 0 | DEBUGF("stream: destroy closed stream(%p)=%d\n", stream, stream->stream_id); |
1245 | |
|
1246 | 0 | mem = &session->mem; |
1247 | |
|
1248 | 0 | if (nghttp2_stream_in_dep_tree(stream)) { |
1249 | 0 | rv = nghttp2_stream_dep_remove(stream); |
1250 | 0 | if (rv != 0) { |
1251 | 0 | return rv; |
1252 | 0 | } |
1253 | 0 | } |
1254 | | |
1255 | 0 | nghttp2_map_remove(&session->streams, stream->stream_id); |
1256 | 0 | nghttp2_stream_free(stream); |
1257 | 0 | nghttp2_mem_free(mem, stream); |
1258 | |
|
1259 | 0 | return 0; |
1260 | 0 | } |
1261 | | |
1262 | | void nghttp2_session_keep_closed_stream(nghttp2_session *session, |
1263 | 0 | nghttp2_stream *stream) { |
1264 | 0 | DEBUGF("stream: keep closed stream(%p)=%d, state=%d\n", stream, |
1265 | 0 | stream->stream_id, stream->state); |
1266 | |
|
1267 | 0 | if (session->closed_stream_tail) { |
1268 | 0 | session->closed_stream_tail->closed_next = stream; |
1269 | 0 | stream->closed_prev = session->closed_stream_tail; |
1270 | 0 | } else { |
1271 | 0 | session->closed_stream_head = stream; |
1272 | 0 | } |
1273 | 0 | session->closed_stream_tail = stream; |
1274 | |
|
1275 | 0 | ++session->num_closed_streams; |
1276 | 0 | } |
1277 | | |
1278 | | void nghttp2_session_keep_idle_stream(nghttp2_session *session, |
1279 | 0 | nghttp2_stream *stream) { |
1280 | 0 | DEBUGF("stream: keep idle stream(%p)=%d, state=%d\n", stream, |
1281 | 0 | stream->stream_id, stream->state); |
1282 | |
|
1283 | 0 | if (session->idle_stream_tail) { |
1284 | 0 | session->idle_stream_tail->closed_next = stream; |
1285 | 0 | stream->closed_prev = session->idle_stream_tail; |
1286 | 0 | } else { |
1287 | 0 | session->idle_stream_head = stream; |
1288 | 0 | } |
1289 | 0 | session->idle_stream_tail = stream; |
1290 | |
|
1291 | 0 | ++session->num_idle_streams; |
1292 | 0 | } |
1293 | | |
1294 | | void nghttp2_session_detach_idle_stream(nghttp2_session *session, |
1295 | 0 | nghttp2_stream *stream) { |
1296 | 0 | nghttp2_stream *prev_stream, *next_stream; |
1297 | |
|
1298 | 0 | DEBUGF("stream: detach idle stream(%p)=%d, state=%d\n", stream, |
1299 | 0 | stream->stream_id, stream->state); |
1300 | |
|
1301 | 0 | prev_stream = stream->closed_prev; |
1302 | 0 | next_stream = stream->closed_next; |
1303 | |
|
1304 | 0 | if (prev_stream) { |
1305 | 0 | prev_stream->closed_next = next_stream; |
1306 | 0 | } else { |
1307 | 0 | session->idle_stream_head = next_stream; |
1308 | 0 | } |
1309 | |
|
1310 | 0 | if (next_stream) { |
1311 | 0 | next_stream->closed_prev = prev_stream; |
1312 | 0 | } else { |
1313 | 0 | session->idle_stream_tail = prev_stream; |
1314 | 0 | } |
1315 | |
|
1316 | 0 | stream->closed_prev = NULL; |
1317 | 0 | stream->closed_next = NULL; |
1318 | |
|
1319 | 0 | --session->num_idle_streams; |
1320 | 0 | } |
1321 | | |
1322 | 0 | int nghttp2_session_adjust_closed_stream(nghttp2_session *session) { |
1323 | 0 | size_t num_stream_max; |
1324 | 0 | int rv; |
1325 | |
|
1326 | 0 | if (session->local_settings.max_concurrent_streams == |
1327 | 0 | NGHTTP2_DEFAULT_MAX_CONCURRENT_STREAMS) { |
1328 | 0 | num_stream_max = session->pending_local_max_concurrent_stream; |
1329 | 0 | } else { |
1330 | 0 | num_stream_max = session->local_settings.max_concurrent_streams; |
1331 | 0 | } |
1332 | |
|
1333 | 0 | DEBUGF("stream: adjusting kept closed streams num_closed_streams=%zu, " |
1334 | 0 | "num_incoming_streams=%zu, max_concurrent_streams=%zu\n", |
1335 | 0 | session->num_closed_streams, session->num_incoming_streams, |
1336 | 0 | num_stream_max); |
1337 | |
|
1338 | 0 | while (session->num_closed_streams > 0 && |
1339 | 0 | session->num_closed_streams + session->num_incoming_streams > |
1340 | 0 | num_stream_max) { |
1341 | 0 | nghttp2_stream *head_stream; |
1342 | 0 | nghttp2_stream *next; |
1343 | |
|
1344 | 0 | head_stream = session->closed_stream_head; |
1345 | |
|
1346 | 0 | assert(head_stream); |
1347 | | |
1348 | 0 | next = head_stream->closed_next; |
1349 | |
|
1350 | 0 | rv = nghttp2_session_destroy_stream(session, head_stream); |
1351 | 0 | if (rv != 0) { |
1352 | 0 | return rv; |
1353 | 0 | } |
1354 | | |
1355 | | /* head_stream is now freed */ |
1356 | | |
1357 | 0 | session->closed_stream_head = next; |
1358 | |
|
1359 | 0 | if (session->closed_stream_head) { |
1360 | 0 | session->closed_stream_head->closed_prev = NULL; |
1361 | 0 | } else { |
1362 | 0 | session->closed_stream_tail = NULL; |
1363 | 0 | } |
1364 | |
|
1365 | 0 | --session->num_closed_streams; |
1366 | 0 | } |
1367 | | |
1368 | 0 | return 0; |
1369 | 0 | } |
1370 | | |
1371 | 0 | int nghttp2_session_adjust_idle_stream(nghttp2_session *session) { |
1372 | 0 | size_t max; |
1373 | 0 | int rv; |
1374 | | |
1375 | | /* Make minimum number of idle streams 16, and maximum 100, which |
1376 | | are arbitrary chosen numbers. */ |
1377 | 0 | max = nghttp2_min( |
1378 | 0 | 100, nghttp2_max( |
1379 | 0 | 16, nghttp2_min(session->local_settings.max_concurrent_streams, |
1380 | 0 | session->pending_local_max_concurrent_stream))); |
1381 | |
|
1382 | 0 | DEBUGF("stream: adjusting kept idle streams num_idle_streams=%zu, max=%zu\n", |
1383 | 0 | session->num_idle_streams, max); |
1384 | |
|
1385 | 0 | while (session->num_idle_streams > max) { |
1386 | 0 | nghttp2_stream *head; |
1387 | 0 | nghttp2_stream *next; |
1388 | |
|
1389 | 0 | head = session->idle_stream_head; |
1390 | 0 | assert(head); |
1391 | | |
1392 | 0 | next = head->closed_next; |
1393 | |
|
1394 | 0 | rv = nghttp2_session_destroy_stream(session, head); |
1395 | 0 | if (rv != 0) { |
1396 | 0 | return rv; |
1397 | 0 | } |
1398 | | |
1399 | | /* head is now destroyed */ |
1400 | | |
1401 | 0 | session->idle_stream_head = next; |
1402 | |
|
1403 | 0 | if (session->idle_stream_head) { |
1404 | 0 | session->idle_stream_head->closed_prev = NULL; |
1405 | 0 | } else { |
1406 | 0 | session->idle_stream_tail = NULL; |
1407 | 0 | } |
1408 | |
|
1409 | 0 | --session->num_idle_streams; |
1410 | 0 | } |
1411 | | |
1412 | 0 | return 0; |
1413 | 0 | } |
1414 | | |
1415 | | /* |
1416 | | * Closes stream with stream ID |stream_id| if both transmission and |
1417 | | * reception of the stream were disallowed. The |error_code| indicates |
1418 | | * the reason of the closure. |
1419 | | * |
1420 | | * This function returns 0 if it succeeds, or one of the following |
1421 | | * negative error codes: |
1422 | | * |
1423 | | * NGHTTP2_ERR_INVALID_ARGUMENT |
1424 | | * The stream is not found. |
1425 | | * NGHTTP2_ERR_CALLBACK_FAILURE |
1426 | | * The callback function failed. |
1427 | | */ |
1428 | | int nghttp2_session_close_stream_if_shut_rdwr(nghttp2_session *session, |
1429 | 0 | nghttp2_stream *stream) { |
1430 | 0 | if ((stream->shut_flags & NGHTTP2_SHUT_RDWR) == NGHTTP2_SHUT_RDWR) { |
1431 | 0 | return nghttp2_session_close_stream(session, stream->stream_id, |
1432 | 0 | NGHTTP2_NO_ERROR); |
1433 | 0 | } |
1434 | 0 | return 0; |
1435 | 0 | } |
1436 | | |
1437 | | /* |
1438 | | * Returns nonzero if local endpoint allows reception of new stream |
1439 | | * from remote. |
1440 | | */ |
1441 | 0 | static int session_allow_incoming_new_stream(nghttp2_session *session) { |
1442 | 0 | return (session->goaway_flags & |
1443 | 0 | (NGHTTP2_GOAWAY_TERM_ON_SEND | NGHTTP2_GOAWAY_SENT)) == 0; |
1444 | 0 | } |
1445 | | |
1446 | | /* |
1447 | | * This function returns nonzero if session is closing. |
1448 | | */ |
1449 | 0 | static int session_is_closing(nghttp2_session *session) { |
1450 | 0 | return (session->goaway_flags & NGHTTP2_GOAWAY_TERM_ON_SEND) != 0 || |
1451 | 0 | (nghttp2_session_want_read(session) == 0 && |
1452 | 0 | nghttp2_session_want_write(session) == 0); |
1453 | 0 | } |
1454 | | |
1455 | | /* |
1456 | | * Check that we can send a frame to the |stream|. This function |
1457 | | * returns 0 if we can send a frame to the |frame|, or one of the |
1458 | | * following negative error codes: |
1459 | | * |
1460 | | * NGHTTP2_ERR_STREAM_CLOSED |
1461 | | * The stream is already closed. |
1462 | | * NGHTTP2_ERR_STREAM_SHUT_WR |
1463 | | * The stream is half-closed for transmission. |
1464 | | * NGHTTP2_ERR_SESSION_CLOSING |
1465 | | * This session is closing. |
1466 | | */ |
1467 | | static int session_predicate_for_stream_send(nghttp2_session *session, |
1468 | 0 | nghttp2_stream *stream) { |
1469 | 0 | if (stream == NULL) { |
1470 | 0 | return NGHTTP2_ERR_STREAM_CLOSED; |
1471 | 0 | } |
1472 | 0 | if (session_is_closing(session)) { |
1473 | 0 | return NGHTTP2_ERR_SESSION_CLOSING; |
1474 | 0 | } |
1475 | 0 | if (stream->shut_flags & NGHTTP2_SHUT_WR) { |
1476 | 0 | return NGHTTP2_ERR_STREAM_SHUT_WR; |
1477 | 0 | } |
1478 | 0 | return 0; |
1479 | 0 | } |
1480 | | |
1481 | 0 | int nghttp2_session_check_request_allowed(nghttp2_session *session) { |
1482 | 0 | return !session->server && session->next_stream_id <= INT32_MAX && |
1483 | 0 | (session->goaway_flags & NGHTTP2_GOAWAY_RECV) == 0 && |
1484 | 0 | !session_is_closing(session); |
1485 | 0 | } |
1486 | | |
1487 | | /* |
1488 | | * This function checks request HEADERS frame, which opens stream, can |
1489 | | * be sent at this time. |
1490 | | * |
1491 | | * This function returns 0 if it succeeds, or one of the following |
1492 | | * negative error codes: |
1493 | | * |
1494 | | * NGHTTP2_ERR_START_STREAM_NOT_ALLOWED |
1495 | | * New stream cannot be created because of GOAWAY: session is |
1496 | | * going down or received last_stream_id is strictly less than |
1497 | | * frame->hd.stream_id. |
1498 | | * NGHTTP2_ERR_STREAM_CLOSING |
1499 | | * request HEADERS was canceled by RST_STREAM while it is in queue. |
1500 | | */ |
1501 | | static int session_predicate_request_headers_send(nghttp2_session *session, |
1502 | 0 | nghttp2_outbound_item *item) { |
1503 | 0 | if (item->aux_data.headers.canceled) { |
1504 | 0 | return NGHTTP2_ERR_STREAM_CLOSING; |
1505 | 0 | } |
1506 | | /* If we are terminating session (NGHTTP2_GOAWAY_TERM_ON_SEND), |
1507 | | GOAWAY was received from peer, or session is about to close, new |
1508 | | request is not allowed. */ |
1509 | 0 | if ((session->goaway_flags & NGHTTP2_GOAWAY_RECV) || |
1510 | 0 | session_is_closing(session)) { |
1511 | 0 | return NGHTTP2_ERR_START_STREAM_NOT_ALLOWED; |
1512 | 0 | } |
1513 | 0 | return 0; |
1514 | 0 | } |
1515 | | |
1516 | | /* |
1517 | | * This function checks HEADERS, which is the first frame from the |
1518 | | * server, with the |stream| can be sent at this time. The |stream| |
1519 | | * can be NULL. |
1520 | | * |
1521 | | * This function returns 0 if it succeeds, or one of the following |
1522 | | * negative error codes: |
1523 | | * |
1524 | | * NGHTTP2_ERR_STREAM_CLOSED |
1525 | | * The stream is already closed or does not exist. |
1526 | | * NGHTTP2_ERR_STREAM_SHUT_WR |
1527 | | * The transmission is not allowed for this stream (e.g., a frame |
1528 | | * with END_STREAM flag set has already sent) |
1529 | | * NGHTTP2_ERR_INVALID_STREAM_ID |
1530 | | * The stream ID is invalid. |
1531 | | * NGHTTP2_ERR_STREAM_CLOSING |
1532 | | * RST_STREAM was queued for this stream. |
1533 | | * NGHTTP2_ERR_INVALID_STREAM_STATE |
1534 | | * The state of the stream is not valid. |
1535 | | * NGHTTP2_ERR_SESSION_CLOSING |
1536 | | * This session is closing. |
1537 | | * NGHTTP2_ERR_PROTO |
1538 | | * Client side attempted to send response. |
1539 | | */ |
1540 | | static int session_predicate_response_headers_send(nghttp2_session *session, |
1541 | 0 | nghttp2_stream *stream) { |
1542 | 0 | int rv; |
1543 | 0 | rv = session_predicate_for_stream_send(session, stream); |
1544 | 0 | if (rv != 0) { |
1545 | 0 | return rv; |
1546 | 0 | } |
1547 | 0 | assert(stream); |
1548 | 0 | if (!session->server) { |
1549 | 0 | return NGHTTP2_ERR_PROTO; |
1550 | 0 | } |
1551 | 0 | if (nghttp2_session_is_my_stream_id(session, stream->stream_id)) { |
1552 | 0 | return NGHTTP2_ERR_INVALID_STREAM_ID; |
1553 | 0 | } |
1554 | 0 | switch (stream->state) { |
1555 | 0 | case NGHTTP2_STREAM_OPENING: |
1556 | 0 | return 0; |
1557 | 0 | case NGHTTP2_STREAM_CLOSING: |
1558 | 0 | return NGHTTP2_ERR_STREAM_CLOSING; |
1559 | 0 | default: |
1560 | 0 | return NGHTTP2_ERR_INVALID_STREAM_STATE; |
1561 | 0 | } |
1562 | 0 | } |
1563 | | |
1564 | | /* |
1565 | | * This function checks HEADERS for reserved stream can be sent. The |
1566 | | * |stream| must be reserved state and the |session| is server side. |
1567 | | * The |stream| can be NULL. |
1568 | | * |
1569 | | * This function returns 0 if it succeeds, or one of the following |
1570 | | * error codes: |
1571 | | * |
1572 | | * NGHTTP2_ERR_STREAM_CLOSED |
1573 | | * The stream is already closed. |
1574 | | * NGHTTP2_ERR_STREAM_SHUT_WR |
1575 | | * The stream is half-closed for transmission. |
1576 | | * NGHTTP2_ERR_PROTO |
1577 | | * The stream is not reserved state |
1578 | | * NGHTTP2_ERR_STREAM_CLOSED |
1579 | | * RST_STREAM was queued for this stream. |
1580 | | * NGHTTP2_ERR_SESSION_CLOSING |
1581 | | * This session is closing. |
1582 | | * NGHTTP2_ERR_START_STREAM_NOT_ALLOWED |
1583 | | * New stream cannot be created because GOAWAY is already sent or |
1584 | | * received. |
1585 | | * NGHTTP2_ERR_PROTO |
1586 | | * Client side attempted to send push response. |
1587 | | */ |
1588 | | static int |
1589 | | session_predicate_push_response_headers_send(nghttp2_session *session, |
1590 | 0 | nghttp2_stream *stream) { |
1591 | 0 | int rv; |
1592 | | /* TODO Should disallow HEADERS if GOAWAY has already been issued? */ |
1593 | 0 | rv = session_predicate_for_stream_send(session, stream); |
1594 | 0 | if (rv != 0) { |
1595 | 0 | return rv; |
1596 | 0 | } |
1597 | 0 | assert(stream); |
1598 | 0 | if (!session->server) { |
1599 | 0 | return NGHTTP2_ERR_PROTO; |
1600 | 0 | } |
1601 | 0 | if (stream->state != NGHTTP2_STREAM_RESERVED) { |
1602 | 0 | return NGHTTP2_ERR_PROTO; |
1603 | 0 | } |
1604 | 0 | if (session->goaway_flags & NGHTTP2_GOAWAY_RECV) { |
1605 | 0 | return NGHTTP2_ERR_START_STREAM_NOT_ALLOWED; |
1606 | 0 | } |
1607 | 0 | return 0; |
1608 | 0 | } |
1609 | | |
1610 | | /* |
1611 | | * This function checks HEADERS, which is neither stream-opening nor |
1612 | | * first response header, with the |stream| can be sent at this time. |
1613 | | * The |stream| can be NULL. |
1614 | | * |
1615 | | * This function returns 0 if it succeeds, or one of the following |
1616 | | * negative error codes: |
1617 | | * |
1618 | | * NGHTTP2_ERR_STREAM_CLOSED |
1619 | | * The stream is already closed or does not exist. |
1620 | | * NGHTTP2_ERR_STREAM_SHUT_WR |
1621 | | * The transmission is not allowed for this stream (e.g., a frame |
1622 | | * with END_STREAM flag set has already sent) |
1623 | | * NGHTTP2_ERR_STREAM_CLOSING |
1624 | | * RST_STREAM was queued for this stream. |
1625 | | * NGHTTP2_ERR_INVALID_STREAM_STATE |
1626 | | * The state of the stream is not valid. |
1627 | | * NGHTTP2_ERR_SESSION_CLOSING |
1628 | | * This session is closing. |
1629 | | */ |
1630 | | static int session_predicate_headers_send(nghttp2_session *session, |
1631 | 0 | nghttp2_stream *stream) { |
1632 | 0 | int rv; |
1633 | 0 | rv = session_predicate_for_stream_send(session, stream); |
1634 | 0 | if (rv != 0) { |
1635 | 0 | return rv; |
1636 | 0 | } |
1637 | 0 | assert(stream); |
1638 | | |
1639 | 0 | switch (stream->state) { |
1640 | 0 | case NGHTTP2_STREAM_OPENED: |
1641 | 0 | return 0; |
1642 | 0 | case NGHTTP2_STREAM_CLOSING: |
1643 | 0 | return NGHTTP2_ERR_STREAM_CLOSING; |
1644 | 0 | default: |
1645 | 0 | if (nghttp2_session_is_my_stream_id(session, stream->stream_id)) { |
1646 | 0 | return 0; |
1647 | 0 | } |
1648 | 0 | return NGHTTP2_ERR_INVALID_STREAM_STATE; |
1649 | 0 | } |
1650 | 0 | } |
1651 | | |
1652 | | /* |
1653 | | * This function checks PUSH_PROMISE frame |frame| with the |stream| |
1654 | | * can be sent at this time. The |stream| can be NULL. |
1655 | | * |
1656 | | * This function returns 0 if it succeeds, or one of the following |
1657 | | * negative error codes: |
1658 | | * |
1659 | | * NGHTTP2_ERR_START_STREAM_NOT_ALLOWED |
1660 | | * New stream cannot be created because GOAWAY is already sent or |
1661 | | * received. |
1662 | | * NGHTTP2_ERR_PROTO |
1663 | | * The client side attempts to send PUSH_PROMISE, or the server |
1664 | | * sends PUSH_PROMISE for the stream not initiated by the client. |
1665 | | * NGHTTP2_ERR_STREAM_CLOSED |
1666 | | * The stream is already closed or does not exist. |
1667 | | * NGHTTP2_ERR_STREAM_CLOSING |
1668 | | * RST_STREAM was queued for this stream. |
1669 | | * NGHTTP2_ERR_STREAM_SHUT_WR |
1670 | | * The transmission is not allowed for this stream (e.g., a frame |
1671 | | * with END_STREAM flag set has already sent) |
1672 | | * NGHTTP2_ERR_PUSH_DISABLED |
1673 | | * The remote peer disabled reception of PUSH_PROMISE. |
1674 | | * NGHTTP2_ERR_SESSION_CLOSING |
1675 | | * This session is closing. |
1676 | | */ |
1677 | | static int session_predicate_push_promise_send(nghttp2_session *session, |
1678 | 0 | nghttp2_stream *stream) { |
1679 | 0 | int rv; |
1680 | |
|
1681 | 0 | if (!session->server) { |
1682 | 0 | return NGHTTP2_ERR_PROTO; |
1683 | 0 | } |
1684 | | |
1685 | 0 | rv = session_predicate_for_stream_send(session, stream); |
1686 | 0 | if (rv != 0) { |
1687 | 0 | return rv; |
1688 | 0 | } |
1689 | | |
1690 | 0 | assert(stream); |
1691 | | |
1692 | 0 | if (session->remote_settings.enable_push == 0) { |
1693 | 0 | return NGHTTP2_ERR_PUSH_DISABLED; |
1694 | 0 | } |
1695 | 0 | if (stream->state == NGHTTP2_STREAM_CLOSING) { |
1696 | 0 | return NGHTTP2_ERR_STREAM_CLOSING; |
1697 | 0 | } |
1698 | 0 | if (session->goaway_flags & NGHTTP2_GOAWAY_RECV) { |
1699 | 0 | return NGHTTP2_ERR_START_STREAM_NOT_ALLOWED; |
1700 | 0 | } |
1701 | 0 | return 0; |
1702 | 0 | } |
1703 | | |
1704 | | /* |
1705 | | * This function checks WINDOW_UPDATE with the stream ID |stream_id| |
1706 | | * can be sent at this time. Note that END_STREAM flag of the previous |
1707 | | * frame does not affect the transmission of the WINDOW_UPDATE frame. |
1708 | | * |
1709 | | * This function returns 0 if it succeeds, or one of the following |
1710 | | * negative error codes: |
1711 | | * |
1712 | | * NGHTTP2_ERR_STREAM_CLOSED |
1713 | | * The stream is already closed or does not exist. |
1714 | | * NGHTTP2_ERR_STREAM_CLOSING |
1715 | | * RST_STREAM was queued for this stream. |
1716 | | * NGHTTP2_ERR_INVALID_STREAM_STATE |
1717 | | * The state of the stream is not valid. |
1718 | | * NGHTTP2_ERR_SESSION_CLOSING |
1719 | | * This session is closing. |
1720 | | */ |
1721 | | static int session_predicate_window_update_send(nghttp2_session *session, |
1722 | 0 | int32_t stream_id) { |
1723 | 0 | nghttp2_stream *stream; |
1724 | |
|
1725 | 0 | if (session_is_closing(session)) { |
1726 | 0 | return NGHTTP2_ERR_SESSION_CLOSING; |
1727 | 0 | } |
1728 | | |
1729 | 0 | if (stream_id == 0) { |
1730 | | /* Connection-level window update */ |
1731 | 0 | return 0; |
1732 | 0 | } |
1733 | 0 | stream = nghttp2_session_get_stream(session, stream_id); |
1734 | 0 | if (stream == NULL) { |
1735 | 0 | return NGHTTP2_ERR_STREAM_CLOSED; |
1736 | 0 | } |
1737 | 0 | if (stream->state == NGHTTP2_STREAM_CLOSING) { |
1738 | 0 | return NGHTTP2_ERR_STREAM_CLOSING; |
1739 | 0 | } |
1740 | 0 | if (state_reserved_local(session, stream)) { |
1741 | 0 | return NGHTTP2_ERR_INVALID_STREAM_STATE; |
1742 | 0 | } |
1743 | 0 | return 0; |
1744 | 0 | } |
1745 | | |
1746 | | static int session_predicate_altsvc_send(nghttp2_session *session, |
1747 | 0 | int32_t stream_id) { |
1748 | 0 | nghttp2_stream *stream; |
1749 | |
|
1750 | 0 | if (session_is_closing(session)) { |
1751 | 0 | return NGHTTP2_ERR_SESSION_CLOSING; |
1752 | 0 | } |
1753 | | |
1754 | 0 | if (stream_id == 0) { |
1755 | 0 | return 0; |
1756 | 0 | } |
1757 | | |
1758 | 0 | stream = nghttp2_session_get_stream(session, stream_id); |
1759 | 0 | if (stream == NULL) { |
1760 | 0 | return NGHTTP2_ERR_STREAM_CLOSED; |
1761 | 0 | } |
1762 | 0 | if (stream->state == NGHTTP2_STREAM_CLOSING) { |
1763 | 0 | return NGHTTP2_ERR_STREAM_CLOSING; |
1764 | 0 | } |
1765 | | |
1766 | 0 | return 0; |
1767 | 0 | } |
1768 | | |
1769 | 0 | static int session_predicate_origin_send(nghttp2_session *session) { |
1770 | 0 | if (session_is_closing(session)) { |
1771 | 0 | return NGHTTP2_ERR_SESSION_CLOSING; |
1772 | 0 | } |
1773 | 0 | return 0; |
1774 | 0 | } |
1775 | | |
1776 | | /* Take into account settings max frame size and both connection-level |
1777 | | flow control here */ |
1778 | | static ssize_t |
1779 | | nghttp2_session_enforce_flow_control_limits(nghttp2_session *session, |
1780 | | nghttp2_stream *stream, |
1781 | 0 | ssize_t requested_window_size) { |
1782 | 0 | DEBUGF("send: remote windowsize connection=%d, remote maxframsize=%u, " |
1783 | 0 | "stream(id %d)=%d\n", |
1784 | 0 | session->remote_window_size, session->remote_settings.max_frame_size, |
1785 | 0 | stream->stream_id, stream->remote_window_size); |
1786 | |
|
1787 | 0 | return nghttp2_min(nghttp2_min(nghttp2_min(requested_window_size, |
1788 | 0 | stream->remote_window_size), |
1789 | 0 | session->remote_window_size), |
1790 | 0 | (int32_t)session->remote_settings.max_frame_size); |
1791 | 0 | } |
1792 | | |
1793 | | /* |
1794 | | * Returns the maximum length of next data read. If the |
1795 | | * connection-level and/or stream-wise flow control are enabled, the |
1796 | | * return value takes into account those current window sizes. The remote |
1797 | | * settings for max frame size is also taken into account. |
1798 | | */ |
1799 | | static size_t nghttp2_session_next_data_read(nghttp2_session *session, |
1800 | 0 | nghttp2_stream *stream) { |
1801 | 0 | ssize_t window_size; |
1802 | |
|
1803 | 0 | window_size = nghttp2_session_enforce_flow_control_limits( |
1804 | 0 | session, stream, NGHTTP2_DATA_PAYLOADLEN); |
1805 | |
|
1806 | 0 | DEBUGF("send: available window=%zd\n", window_size); |
1807 | |
|
1808 | 0 | return window_size > 0 ? (size_t)window_size : 0; |
1809 | 0 | } |
1810 | | |
1811 | | /* |
1812 | | * This function checks DATA with the |stream| can be sent at this |
1813 | | * time. The |stream| can be NULL. |
1814 | | * |
1815 | | * This function returns 0 if it succeeds, or one of the following |
1816 | | * negative error codes: |
1817 | | * |
1818 | | * NGHTTP2_ERR_STREAM_CLOSED |
1819 | | * The stream is already closed or does not exist. |
1820 | | * NGHTTP2_ERR_STREAM_SHUT_WR |
1821 | | * The transmission is not allowed for this stream (e.g., a frame |
1822 | | * with END_STREAM flag set has already sent) |
1823 | | * NGHTTP2_ERR_STREAM_CLOSING |
1824 | | * RST_STREAM was queued for this stream. |
1825 | | * NGHTTP2_ERR_INVALID_STREAM_STATE |
1826 | | * The state of the stream is not valid. |
1827 | | * NGHTTP2_ERR_SESSION_CLOSING |
1828 | | * This session is closing. |
1829 | | */ |
1830 | | static int nghttp2_session_predicate_data_send(nghttp2_session *session, |
1831 | 0 | nghttp2_stream *stream) { |
1832 | 0 | int rv; |
1833 | 0 | rv = session_predicate_for_stream_send(session, stream); |
1834 | 0 | if (rv != 0) { |
1835 | 0 | return rv; |
1836 | 0 | } |
1837 | 0 | assert(stream); |
1838 | 0 | if (nghttp2_session_is_my_stream_id(session, stream->stream_id)) { |
1839 | | /* Request body data */ |
1840 | | /* If stream->state is NGHTTP2_STREAM_CLOSING, RST_STREAM was |
1841 | | queued but not yet sent. In this case, we won't send DATA |
1842 | | frames. */ |
1843 | 0 | if (stream->state == NGHTTP2_STREAM_CLOSING) { |
1844 | 0 | return NGHTTP2_ERR_STREAM_CLOSING; |
1845 | 0 | } |
1846 | 0 | if (stream->state == NGHTTP2_STREAM_RESERVED) { |
1847 | 0 | return NGHTTP2_ERR_INVALID_STREAM_STATE; |
1848 | 0 | } |
1849 | 0 | return 0; |
1850 | 0 | } |
1851 | | /* Response body data */ |
1852 | 0 | if (stream->state == NGHTTP2_STREAM_OPENED) { |
1853 | 0 | return 0; |
1854 | 0 | } |
1855 | 0 | if (stream->state == NGHTTP2_STREAM_CLOSING) { |
1856 | 0 | return NGHTTP2_ERR_STREAM_CLOSING; |
1857 | 0 | } |
1858 | 0 | return NGHTTP2_ERR_INVALID_STREAM_STATE; |
1859 | 0 | } |
1860 | | |
1861 | | static ssize_t session_call_select_padding(nghttp2_session *session, |
1862 | | const nghttp2_frame *frame, |
1863 | 0 | size_t max_payloadlen) { |
1864 | 0 | ssize_t rv; |
1865 | |
|
1866 | 0 | if (frame->hd.length >= max_payloadlen) { |
1867 | 0 | return (ssize_t)frame->hd.length; |
1868 | 0 | } |
1869 | | |
1870 | 0 | if (session->callbacks.select_padding_callback) { |
1871 | 0 | size_t max_paddedlen; |
1872 | |
|
1873 | 0 | max_paddedlen = |
1874 | 0 | nghttp2_min(frame->hd.length + NGHTTP2_MAX_PADLEN, max_payloadlen); |
1875 | |
|
1876 | 0 | rv = session->callbacks.select_padding_callback( |
1877 | 0 | session, frame, max_paddedlen, session->user_data); |
1878 | 0 | if (rv < (ssize_t)frame->hd.length || rv > (ssize_t)max_paddedlen) { |
1879 | 0 | return NGHTTP2_ERR_CALLBACK_FAILURE; |
1880 | 0 | } |
1881 | 0 | return rv; |
1882 | 0 | } |
1883 | 0 | return (ssize_t)frame->hd.length; |
1884 | 0 | } |
1885 | | |
1886 | | /* Add padding to HEADERS or PUSH_PROMISE. We use |
1887 | | frame->headers.padlen in this function to use the fact that |
1888 | | frame->push_promise has also padlen in the same position. */ |
1889 | | static int session_headers_add_pad(nghttp2_session *session, |
1890 | 0 | nghttp2_frame *frame) { |
1891 | 0 | int rv; |
1892 | 0 | ssize_t padded_payloadlen; |
1893 | 0 | nghttp2_active_outbound_item *aob; |
1894 | 0 | nghttp2_bufs *framebufs; |
1895 | 0 | size_t padlen; |
1896 | 0 | size_t max_payloadlen; |
1897 | |
|
1898 | 0 | aob = &session->aob; |
1899 | 0 | framebufs = &aob->framebufs; |
1900 | |
|
1901 | 0 | max_payloadlen = nghttp2_min(NGHTTP2_MAX_PAYLOADLEN, |
1902 | 0 | frame->hd.length + NGHTTP2_MAX_PADLEN); |
1903 | |
|
1904 | 0 | padded_payloadlen = |
1905 | 0 | session_call_select_padding(session, frame, max_payloadlen); |
1906 | |
|
1907 | 0 | if (nghttp2_is_fatal((int)padded_payloadlen)) { |
1908 | 0 | return (int)padded_payloadlen; |
1909 | 0 | } |
1910 | | |
1911 | 0 | padlen = (size_t)padded_payloadlen - frame->hd.length; |
1912 | |
|
1913 | 0 | DEBUGF("send: padding selected: payloadlen=%zd, padlen=%zu\n", |
1914 | 0 | padded_payloadlen, padlen); |
1915 | |
|
1916 | 0 | rv = nghttp2_frame_add_pad(framebufs, &frame->hd, padlen, 0); |
1917 | |
|
1918 | 0 | if (rv != 0) { |
1919 | 0 | return rv; |
1920 | 0 | } |
1921 | | |
1922 | 0 | frame->headers.padlen = padlen; |
1923 | |
|
1924 | 0 | return 0; |
1925 | 0 | } |
1926 | | |
1927 | | static size_t session_estimate_headers_payload(nghttp2_session *session, |
1928 | | const nghttp2_nv *nva, |
1929 | | size_t nvlen, |
1930 | 0 | size_t additional) { |
1931 | 0 | return nghttp2_hd_deflate_bound(&session->hd_deflater, nva, nvlen) + |
1932 | 0 | additional; |
1933 | 0 | } |
1934 | | |
1935 | | static int session_pack_extension(nghttp2_session *session, nghttp2_bufs *bufs, |
1936 | 0 | nghttp2_frame *frame) { |
1937 | 0 | ssize_t rv; |
1938 | 0 | nghttp2_buf *buf; |
1939 | 0 | size_t buflen; |
1940 | 0 | size_t framelen; |
1941 | |
|
1942 | 0 | assert(session->callbacks.pack_extension_callback); |
1943 | | |
1944 | 0 | buf = &bufs->head->buf; |
1945 | 0 | buflen = nghttp2_min(nghttp2_buf_avail(buf), NGHTTP2_MAX_PAYLOADLEN); |
1946 | |
|
1947 | 0 | rv = session->callbacks.pack_extension_callback(session, buf->last, buflen, |
1948 | 0 | frame, session->user_data); |
1949 | 0 | if (rv == NGHTTP2_ERR_CANCEL) { |
1950 | 0 | return (int)rv; |
1951 | 0 | } |
1952 | | |
1953 | 0 | if (rv < 0 || (size_t)rv > buflen) { |
1954 | 0 | return NGHTTP2_ERR_CALLBACK_FAILURE; |
1955 | 0 | } |
1956 | | |
1957 | 0 | framelen = (size_t)rv; |
1958 | |
|
1959 | 0 | frame->hd.length = framelen; |
1960 | |
|
1961 | 0 | assert(buf->pos == buf->last); |
1962 | 0 | buf->last += framelen; |
1963 | 0 | buf->pos -= NGHTTP2_FRAME_HDLEN; |
1964 | |
|
1965 | 0 | nghttp2_frame_pack_frame_hd(buf->pos, &frame->hd); |
1966 | |
|
1967 | 0 | return 0; |
1968 | 0 | } |
1969 | | |
1970 | | /* |
1971 | | * This function serializes frame for transmission. |
1972 | | * |
1973 | | * This function returns 0 if it succeeds, or one of negative error |
1974 | | * codes, including both fatal and non-fatal ones. |
1975 | | */ |
1976 | | static int session_prep_frame(nghttp2_session *session, |
1977 | 0 | nghttp2_outbound_item *item) { |
1978 | 0 | int rv; |
1979 | 0 | nghttp2_frame *frame; |
1980 | 0 | nghttp2_mem *mem; |
1981 | |
|
1982 | 0 | mem = &session->mem; |
1983 | 0 | frame = &item->frame; |
1984 | |
|
1985 | 0 | switch (frame->hd.type) { |
1986 | 0 | case NGHTTP2_DATA: { |
1987 | 0 | size_t next_readmax; |
1988 | 0 | nghttp2_stream *stream; |
1989 | |
|
1990 | 0 | stream = nghttp2_session_get_stream(session, frame->hd.stream_id); |
1991 | |
|
1992 | 0 | if (stream) { |
1993 | 0 | assert(stream->item == item); |
1994 | 0 | } |
1995 | | |
1996 | 0 | rv = nghttp2_session_predicate_data_send(session, stream); |
1997 | 0 | if (rv != 0) { |
1998 | | // If stream was already closed, nghttp2_session_get_stream() |
1999 | | // returns NULL, but item is still attached to the stream. |
2000 | | // Search stream including closed again. |
2001 | 0 | stream = nghttp2_session_get_stream_raw(session, frame->hd.stream_id); |
2002 | 0 | if (stream) { |
2003 | 0 | int rv2; |
2004 | |
|
2005 | 0 | rv2 = nghttp2_stream_detach_item(stream); |
2006 | |
|
2007 | 0 | if (nghttp2_is_fatal(rv2)) { |
2008 | 0 | return rv2; |
2009 | 0 | } |
2010 | 0 | } |
2011 | | |
2012 | 0 | return rv; |
2013 | 0 | } |
2014 | | /* Assuming stream is not NULL */ |
2015 | 0 | assert(stream); |
2016 | 0 | next_readmax = nghttp2_session_next_data_read(session, stream); |
2017 | |
|
2018 | 0 | if (next_readmax == 0) { |
2019 | | |
2020 | | /* This must be true since we only pop DATA frame item from |
2021 | | queue when session->remote_window_size > 0 */ |
2022 | 0 | assert(session->remote_window_size > 0); |
2023 | | |
2024 | 0 | rv = nghttp2_stream_defer_item(stream, |
2025 | 0 | NGHTTP2_STREAM_FLAG_DEFERRED_FLOW_CONTROL); |
2026 | |
|
2027 | 0 | if (nghttp2_is_fatal(rv)) { |
2028 | 0 | return rv; |
2029 | 0 | } |
2030 | | |
2031 | 0 | session->aob.item = NULL; |
2032 | 0 | active_outbound_item_reset(&session->aob, mem); |
2033 | 0 | return NGHTTP2_ERR_DEFERRED; |
2034 | 0 | } |
2035 | | |
2036 | 0 | rv = nghttp2_session_pack_data(session, &session->aob.framebufs, |
2037 | 0 | next_readmax, frame, &item->aux_data.data, |
2038 | 0 | stream); |
2039 | 0 | if (rv == NGHTTP2_ERR_PAUSE) { |
2040 | 0 | return rv; |
2041 | 0 | } |
2042 | 0 | if (rv == NGHTTP2_ERR_DEFERRED) { |
2043 | 0 | rv = nghttp2_stream_defer_item(stream, NGHTTP2_STREAM_FLAG_DEFERRED_USER); |
2044 | |
|
2045 | 0 | if (nghttp2_is_fatal(rv)) { |
2046 | 0 | return rv; |
2047 | 0 | } |
2048 | | |
2049 | 0 | session->aob.item = NULL; |
2050 | 0 | active_outbound_item_reset(&session->aob, mem); |
2051 | 0 | return NGHTTP2_ERR_DEFERRED; |
2052 | 0 | } |
2053 | 0 | if (rv == NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE) { |
2054 | 0 | rv = nghttp2_stream_detach_item(stream); |
2055 | |
|
2056 | 0 | if (nghttp2_is_fatal(rv)) { |
2057 | 0 | return rv; |
2058 | 0 | } |
2059 | | |
2060 | 0 | rv = nghttp2_session_add_rst_stream(session, frame->hd.stream_id, |
2061 | 0 | NGHTTP2_INTERNAL_ERROR); |
2062 | 0 | if (nghttp2_is_fatal(rv)) { |
2063 | 0 | return rv; |
2064 | 0 | } |
2065 | 0 | return NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE; |
2066 | 0 | } |
2067 | 0 | if (rv != 0) { |
2068 | 0 | int rv2; |
2069 | |
|
2070 | 0 | rv2 = nghttp2_stream_detach_item(stream); |
2071 | |
|
2072 | 0 | if (nghttp2_is_fatal(rv2)) { |
2073 | 0 | return rv2; |
2074 | 0 | } |
2075 | | |
2076 | 0 | return rv; |
2077 | 0 | } |
2078 | 0 | return 0; |
2079 | 0 | } |
2080 | 0 | case NGHTTP2_HEADERS: { |
2081 | 0 | nghttp2_headers_aux_data *aux_data; |
2082 | 0 | size_t estimated_payloadlen; |
2083 | |
|
2084 | 0 | aux_data = &item->aux_data.headers; |
2085 | |
|
2086 | 0 | if (frame->headers.cat == NGHTTP2_HCAT_REQUEST) { |
2087 | | /* initial HEADERS, which opens stream */ |
2088 | 0 | nghttp2_stream *stream; |
2089 | |
|
2090 | 0 | stream = nghttp2_session_open_stream( |
2091 | 0 | session, frame->hd.stream_id, NGHTTP2_STREAM_FLAG_NONE, |
2092 | 0 | &frame->headers.pri_spec, NGHTTP2_STREAM_INITIAL, |
2093 | 0 | aux_data->stream_user_data); |
2094 | |
|
2095 | 0 | if (stream == NULL) { |
2096 | 0 | return NGHTTP2_ERR_NOMEM; |
2097 | 0 | } |
2098 | | |
2099 | | /* We don't call nghttp2_session_adjust_closed_stream() here, |
2100 | | since we don't keep closed stream in client side */ |
2101 | | |
2102 | 0 | rv = session_predicate_request_headers_send(session, item); |
2103 | 0 | if (rv != 0) { |
2104 | 0 | return rv; |
2105 | 0 | } |
2106 | | |
2107 | 0 | if (session_enforce_http_messaging(session)) { |
2108 | 0 | nghttp2_http_record_request_method(stream, frame); |
2109 | 0 | } |
2110 | 0 | } else { |
2111 | 0 | nghttp2_stream *stream; |
2112 | |
|
2113 | 0 | stream = nghttp2_session_get_stream(session, frame->hd.stream_id); |
2114 | |
|
2115 | 0 | if (stream && stream->state == NGHTTP2_STREAM_RESERVED) { |
2116 | 0 | rv = session_predicate_push_response_headers_send(session, stream); |
2117 | 0 | if (rv == 0) { |
2118 | 0 | frame->headers.cat = NGHTTP2_HCAT_PUSH_RESPONSE; |
2119 | |
|
2120 | 0 | if (aux_data->stream_user_data) { |
2121 | 0 | stream->stream_user_data = aux_data->stream_user_data; |
2122 | 0 | } |
2123 | 0 | } |
2124 | 0 | } else if (session_predicate_response_headers_send(session, stream) == |
2125 | 0 | 0) { |
2126 | 0 | frame->headers.cat = NGHTTP2_HCAT_RESPONSE; |
2127 | 0 | rv = 0; |
2128 | 0 | } else { |
2129 | 0 | frame->headers.cat = NGHTTP2_HCAT_HEADERS; |
2130 | |
|
2131 | 0 | rv = session_predicate_headers_send(session, stream); |
2132 | 0 | } |
2133 | |
|
2134 | 0 | if (rv != 0) { |
2135 | 0 | return rv; |
2136 | 0 | } |
2137 | 0 | } |
2138 | | |
2139 | 0 | estimated_payloadlen = session_estimate_headers_payload( |
2140 | 0 | session, frame->headers.nva, frame->headers.nvlen, |
2141 | 0 | NGHTTP2_PRIORITY_SPECLEN); |
2142 | |
|
2143 | 0 | if (estimated_payloadlen > session->max_send_header_block_length) { |
2144 | 0 | return NGHTTP2_ERR_FRAME_SIZE_ERROR; |
2145 | 0 | } |
2146 | | |
2147 | 0 | rv = nghttp2_frame_pack_headers(&session->aob.framebufs, &frame->headers, |
2148 | 0 | &session->hd_deflater); |
2149 | |
|
2150 | 0 | if (rv != 0) { |
2151 | 0 | return rv; |
2152 | 0 | } |
2153 | | |
2154 | 0 | DEBUGF("send: before padding, HEADERS serialized in %zd bytes\n", |
2155 | 0 | nghttp2_bufs_len(&session->aob.framebufs)); |
2156 | |
|
2157 | 0 | rv = session_headers_add_pad(session, frame); |
2158 | |
|
2159 | 0 | if (rv != 0) { |
2160 | 0 | return rv; |
2161 | 0 | } |
2162 | | |
2163 | 0 | DEBUGF("send: HEADERS finally serialized in %zd bytes\n", |
2164 | 0 | nghttp2_bufs_len(&session->aob.framebufs)); |
2165 | |
|
2166 | 0 | if (frame->headers.cat == NGHTTP2_HCAT_REQUEST) { |
2167 | 0 | assert(session->last_sent_stream_id < frame->hd.stream_id); |
2168 | 0 | session->last_sent_stream_id = frame->hd.stream_id; |
2169 | 0 | } |
2170 | | |
2171 | 0 | return 0; |
2172 | 0 | } |
2173 | 0 | case NGHTTP2_PRIORITY: { |
2174 | 0 | if (session_is_closing(session)) { |
2175 | 0 | return NGHTTP2_ERR_SESSION_CLOSING; |
2176 | 0 | } |
2177 | | /* PRIORITY frame can be sent at any time and to any stream |
2178 | | ID. */ |
2179 | 0 | nghttp2_frame_pack_priority(&session->aob.framebufs, &frame->priority); |
2180 | | |
2181 | | /* Peer can send PRIORITY frame against idle stream to create |
2182 | | "anchor" in dependency tree. Only client can do this in |
2183 | | nghttp2. In nghttp2, only server retains non-active (closed |
2184 | | or idle) streams in memory, so we don't open stream here. */ |
2185 | 0 | return 0; |
2186 | 0 | } |
2187 | 0 | case NGHTTP2_RST_STREAM: |
2188 | 0 | if (session_is_closing(session)) { |
2189 | 0 | return NGHTTP2_ERR_SESSION_CLOSING; |
2190 | 0 | } |
2191 | 0 | nghttp2_frame_pack_rst_stream(&session->aob.framebufs, &frame->rst_stream); |
2192 | 0 | return 0; |
2193 | 0 | case NGHTTP2_SETTINGS: { |
2194 | 0 | if (frame->hd.flags & NGHTTP2_FLAG_ACK) { |
2195 | 0 | assert(session->obq_flood_counter_ > 0); |
2196 | 0 | --session->obq_flood_counter_; |
2197 | | /* When session is about to close, don't send SETTINGS ACK. |
2198 | | We are required to send SETTINGS without ACK though; for |
2199 | | example, we have to send SETTINGS as a part of connection |
2200 | | preface. */ |
2201 | 0 | if (session_is_closing(session)) { |
2202 | 0 | return NGHTTP2_ERR_SESSION_CLOSING; |
2203 | 0 | } |
2204 | 0 | } |
2205 | | |
2206 | 0 | rv = nghttp2_frame_pack_settings(&session->aob.framebufs, &frame->settings); |
2207 | 0 | if (rv != 0) { |
2208 | 0 | return rv; |
2209 | 0 | } |
2210 | 0 | return 0; |
2211 | 0 | } |
2212 | 0 | case NGHTTP2_PUSH_PROMISE: { |
2213 | 0 | nghttp2_stream *stream; |
2214 | 0 | size_t estimated_payloadlen; |
2215 | | |
2216 | | /* stream could be NULL if associated stream was already |
2217 | | closed. */ |
2218 | 0 | stream = nghttp2_session_get_stream(session, frame->hd.stream_id); |
2219 | | |
2220 | | /* predicate should fail if stream is NULL. */ |
2221 | 0 | rv = session_predicate_push_promise_send(session, stream); |
2222 | 0 | if (rv != 0) { |
2223 | 0 | return rv; |
2224 | 0 | } |
2225 | | |
2226 | 0 | assert(stream); |
2227 | | |
2228 | 0 | estimated_payloadlen = session_estimate_headers_payload( |
2229 | 0 | session, frame->push_promise.nva, frame->push_promise.nvlen, 0); |
2230 | |
|
2231 | 0 | if (estimated_payloadlen > session->max_send_header_block_length) { |
2232 | 0 | return NGHTTP2_ERR_FRAME_SIZE_ERROR; |
2233 | 0 | } |
2234 | | |
2235 | 0 | rv = nghttp2_frame_pack_push_promise( |
2236 | 0 | &session->aob.framebufs, &frame->push_promise, &session->hd_deflater); |
2237 | 0 | if (rv != 0) { |
2238 | 0 | return rv; |
2239 | 0 | } |
2240 | 0 | rv = session_headers_add_pad(session, frame); |
2241 | 0 | if (rv != 0) { |
2242 | 0 | return rv; |
2243 | 0 | } |
2244 | | |
2245 | 0 | assert(session->last_sent_stream_id + 2 <= |
2246 | 0 | frame->push_promise.promised_stream_id); |
2247 | 0 | session->last_sent_stream_id = frame->push_promise.promised_stream_id; |
2248 | |
|
2249 | 0 | return 0; |
2250 | 0 | } |
2251 | 0 | case NGHTTP2_PING: |
2252 | 0 | if (frame->hd.flags & NGHTTP2_FLAG_ACK) { |
2253 | 0 | assert(session->obq_flood_counter_ > 0); |
2254 | 0 | --session->obq_flood_counter_; |
2255 | 0 | } |
2256 | | /* PING frame is allowed to be sent unless termination GOAWAY is |
2257 | | sent */ |
2258 | 0 | if (session->goaway_flags & NGHTTP2_GOAWAY_TERM_ON_SEND) { |
2259 | 0 | return NGHTTP2_ERR_SESSION_CLOSING; |
2260 | 0 | } |
2261 | 0 | nghttp2_frame_pack_ping(&session->aob.framebufs, &frame->ping); |
2262 | 0 | return 0; |
2263 | 0 | case NGHTTP2_GOAWAY: |
2264 | 0 | rv = nghttp2_frame_pack_goaway(&session->aob.framebufs, &frame->goaway); |
2265 | 0 | if (rv != 0) { |
2266 | 0 | return rv; |
2267 | 0 | } |
2268 | 0 | session->local_last_stream_id = frame->goaway.last_stream_id; |
2269 | |
|
2270 | 0 | return 0; |
2271 | 0 | case NGHTTP2_WINDOW_UPDATE: |
2272 | 0 | rv = session_predicate_window_update_send(session, frame->hd.stream_id); |
2273 | 0 | if (rv != 0) { |
2274 | 0 | return rv; |
2275 | 0 | } |
2276 | 0 | nghttp2_frame_pack_window_update(&session->aob.framebufs, |
2277 | 0 | &frame->window_update); |
2278 | 0 | return 0; |
2279 | 0 | case NGHTTP2_CONTINUATION: |
2280 | | /* We never handle CONTINUATION here. */ |
2281 | 0 | assert(0); |
2282 | 0 | return 0; |
2283 | 0 | default: { |
2284 | 0 | nghttp2_ext_aux_data *aux_data; |
2285 | | |
2286 | | /* extension frame */ |
2287 | |
|
2288 | 0 | aux_data = &item->aux_data.ext; |
2289 | |
|
2290 | 0 | if (aux_data->builtin == 0) { |
2291 | 0 | if (session_is_closing(session)) { |
2292 | 0 | return NGHTTP2_ERR_SESSION_CLOSING; |
2293 | 0 | } |
2294 | | |
2295 | 0 | return session_pack_extension(session, &session->aob.framebufs, frame); |
2296 | 0 | } |
2297 | | |
2298 | 0 | switch (frame->hd.type) { |
2299 | 0 | case NGHTTP2_ALTSVC: |
2300 | 0 | rv = session_predicate_altsvc_send(session, frame->hd.stream_id); |
2301 | 0 | if (rv != 0) { |
2302 | 0 | return rv; |
2303 | 0 | } |
2304 | | |
2305 | 0 | nghttp2_frame_pack_altsvc(&session->aob.framebufs, &frame->ext); |
2306 | |
|
2307 | 0 | return 0; |
2308 | 0 | case NGHTTP2_ORIGIN: |
2309 | 0 | rv = session_predicate_origin_send(session); |
2310 | 0 | if (rv != 0) { |
2311 | 0 | return rv; |
2312 | 0 | } |
2313 | | |
2314 | 0 | rv = nghttp2_frame_pack_origin(&session->aob.framebufs, &frame->ext); |
2315 | 0 | if (rv != 0) { |
2316 | 0 | return rv; |
2317 | 0 | } |
2318 | | |
2319 | 0 | return 0; |
2320 | 0 | default: |
2321 | | /* Unreachable here */ |
2322 | 0 | assert(0); |
2323 | 0 | return 0; |
2324 | 0 | } |
2325 | 0 | } |
2326 | 0 | } |
2327 | 0 | } |
2328 | | |
2329 | | nghttp2_outbound_item * |
2330 | 0 | nghttp2_session_get_next_ob_item(nghttp2_session *session) { |
2331 | 0 | if (nghttp2_outbound_queue_top(&session->ob_urgent)) { |
2332 | 0 | return nghttp2_outbound_queue_top(&session->ob_urgent); |
2333 | 0 | } |
2334 | | |
2335 | 0 | if (nghttp2_outbound_queue_top(&session->ob_reg)) { |
2336 | 0 | return nghttp2_outbound_queue_top(&session->ob_reg); |
2337 | 0 | } |
2338 | | |
2339 | 0 | if (!session_is_outgoing_concurrent_streams_max(session)) { |
2340 | 0 | if (nghttp2_outbound_queue_top(&session->ob_syn)) { |
2341 | 0 | return nghttp2_outbound_queue_top(&session->ob_syn); |
2342 | 0 | } |
2343 | 0 | } |
2344 | | |
2345 | 0 | if (session->remote_window_size > 0) { |
2346 | 0 | return nghttp2_stream_next_outbound_item(&session->root); |
2347 | 0 | } |
2348 | | |
2349 | 0 | return NULL; |
2350 | 0 | } |
2351 | | |
2352 | | nghttp2_outbound_item * |
2353 | 0 | nghttp2_session_pop_next_ob_item(nghttp2_session *session) { |
2354 | 0 | nghttp2_outbound_item *item; |
2355 | |
|
2356 | 0 | item = nghttp2_outbound_queue_top(&session->ob_urgent); |
2357 | 0 | if (item) { |
2358 | 0 | nghttp2_outbound_queue_pop(&session->ob_urgent); |
2359 | 0 | item->queued = 0; |
2360 | 0 | return item; |
2361 | 0 | } |
2362 | | |
2363 | 0 | item = nghttp2_outbound_queue_top(&session->ob_reg); |
2364 | 0 | if (item) { |
2365 | 0 | nghttp2_outbound_queue_pop(&session->ob_reg); |
2366 | 0 | item->queued = 0; |
2367 | 0 | return item; |
2368 | 0 | } |
2369 | | |
2370 | 0 | if (!session_is_outgoing_concurrent_streams_max(session)) { |
2371 | 0 | item = nghttp2_outbound_queue_top(&session->ob_syn); |
2372 | 0 | if (item) { |
2373 | 0 | nghttp2_outbound_queue_pop(&session->ob_syn); |
2374 | 0 | item->queued = 0; |
2375 | 0 | return item; |
2376 | 0 | } |
2377 | 0 | } |
2378 | | |
2379 | 0 | if (session->remote_window_size > 0) { |
2380 | 0 | return nghttp2_stream_next_outbound_item(&session->root); |
2381 | 0 | } |
2382 | | |
2383 | 0 | return NULL; |
2384 | 0 | } |
2385 | | |
2386 | | static int session_call_before_frame_send(nghttp2_session *session, |
2387 | 0 | nghttp2_frame *frame) { |
2388 | 0 | int rv; |
2389 | 0 | if (session->callbacks.before_frame_send_callback) { |
2390 | 0 | rv = session->callbacks.before_frame_send_callback(session, frame, |
2391 | 0 | session->user_data); |
2392 | 0 | if (rv == NGHTTP2_ERR_CANCEL) { |
2393 | 0 | return rv; |
2394 | 0 | } |
2395 | | |
2396 | 0 | if (rv != 0) { |
2397 | 0 | return NGHTTP2_ERR_CALLBACK_FAILURE; |
2398 | 0 | } |
2399 | 0 | } |
2400 | 0 | return 0; |
2401 | 0 | } |
2402 | | |
2403 | | static int session_call_on_frame_send(nghttp2_session *session, |
2404 | 0 | nghttp2_frame *frame) { |
2405 | 0 | int rv; |
2406 | 0 | if (session->callbacks.on_frame_send_callback) { |
2407 | 0 | rv = session->callbacks.on_frame_send_callback(session, frame, |
2408 | 0 | session->user_data); |
2409 | 0 | if (rv != 0) { |
2410 | 0 | return NGHTTP2_ERR_CALLBACK_FAILURE; |
2411 | 0 | } |
2412 | 0 | } |
2413 | 0 | return 0; |
2414 | 0 | } |
2415 | | |
2416 | 0 | static int find_stream_on_goaway_func(nghttp2_map_entry *entry, void *ptr) { |
2417 | 0 | nghttp2_close_stream_on_goaway_arg *arg; |
2418 | 0 | nghttp2_stream *stream; |
2419 | |
|
2420 | 0 | arg = (nghttp2_close_stream_on_goaway_arg *)ptr; |
2421 | 0 | stream = (nghttp2_stream *)entry; |
2422 | |
|
2423 | 0 | if (nghttp2_session_is_my_stream_id(arg->session, stream->stream_id)) { |
2424 | 0 | if (arg->incoming) { |
2425 | 0 | return 0; |
2426 | 0 | } |
2427 | 0 | } else if (!arg->incoming) { |
2428 | 0 | return 0; |
2429 | 0 | } |
2430 | | |
2431 | 0 | if (stream->state != NGHTTP2_STREAM_IDLE && |
2432 | 0 | (stream->flags & NGHTTP2_STREAM_FLAG_CLOSED) == 0 && |
2433 | 0 | stream->stream_id > arg->last_stream_id) { |
2434 | | /* We are collecting streams to close because we cannot call |
2435 | | nghttp2_session_close_stream() inside nghttp2_map_each(). |
2436 | | Reuse closed_next member.. bad choice? */ |
2437 | 0 | assert(stream->closed_next == NULL); |
2438 | 0 | assert(stream->closed_prev == NULL); |
2439 | | |
2440 | 0 | if (arg->head) { |
2441 | 0 | stream->closed_next = arg->head; |
2442 | 0 | arg->head = stream; |
2443 | 0 | } else { |
2444 | 0 | arg->head = stream; |
2445 | 0 | } |
2446 | 0 | } |
2447 | | |
2448 | 0 | return 0; |
2449 | 0 | } |
2450 | | |
2451 | | /* Closes non-idle and non-closed streams whose stream ID > |
2452 | | last_stream_id. If incoming is nonzero, we are going to close |
2453 | | incoming streams. Otherwise, close outgoing streams. */ |
2454 | | static int session_close_stream_on_goaway(nghttp2_session *session, |
2455 | | int32_t last_stream_id, |
2456 | 0 | int incoming) { |
2457 | 0 | int rv; |
2458 | 0 | nghttp2_stream *stream, *next_stream; |
2459 | 0 | nghttp2_close_stream_on_goaway_arg arg = {session, NULL, last_stream_id, |
2460 | 0 | incoming}; |
2461 | |
|
2462 | 0 | rv = nghttp2_map_each(&session->streams, find_stream_on_goaway_func, &arg); |
2463 | 0 | assert(rv == 0); |
2464 | | |
2465 | 0 | stream = arg.head; |
2466 | 0 | while (stream) { |
2467 | 0 | next_stream = stream->closed_next; |
2468 | 0 | stream->closed_next = NULL; |
2469 | 0 | rv = nghttp2_session_close_stream(session, stream->stream_id, |
2470 | 0 | NGHTTP2_REFUSED_STREAM); |
2471 | | |
2472 | | /* stream may be deleted here */ |
2473 | |
|
2474 | 0 | stream = next_stream; |
2475 | |
|
2476 | 0 | if (nghttp2_is_fatal(rv)) { |
2477 | | /* Clean up closed_next member just in case */ |
2478 | 0 | while (stream) { |
2479 | 0 | next_stream = stream->closed_next; |
2480 | 0 | stream->closed_next = NULL; |
2481 | 0 | stream = next_stream; |
2482 | 0 | } |
2483 | 0 | return rv; |
2484 | 0 | } |
2485 | 0 | } |
2486 | | |
2487 | 0 | return 0; |
2488 | 0 | } |
2489 | | |
2490 | 0 | static void reschedule_stream(nghttp2_stream *stream) { |
2491 | 0 | stream->last_writelen = stream->item->frame.hd.length; |
2492 | |
|
2493 | 0 | nghttp2_stream_reschedule(stream); |
2494 | 0 | } |
2495 | | |
2496 | | static int session_update_stream_consumed_size(nghttp2_session *session, |
2497 | | nghttp2_stream *stream, |
2498 | | size_t delta_size); |
2499 | | |
2500 | | static int session_update_connection_consumed_size(nghttp2_session *session, |
2501 | | size_t delta_size); |
2502 | | |
2503 | | /* |
2504 | | * Called after a frame is sent. This function runs |
2505 | | * on_frame_send_callback and handles stream closure upon END_STREAM |
2506 | | * or RST_STREAM. This function does not reset session->aob. It is a |
2507 | | * responsibility of session_after_frame_sent2. |
2508 | | * |
2509 | | * This function returns 0 if it succeeds, or one of the following |
2510 | | * negative error codes: |
2511 | | * |
2512 | | * NGHTTP2_ERR_NOMEM |
2513 | | * Out of memory. |
2514 | | * NGHTTP2_ERR_CALLBACK_FAILURE |
2515 | | * The callback function failed. |
2516 | | */ |
2517 | 0 | static int session_after_frame_sent1(nghttp2_session *session) { |
2518 | 0 | int rv; |
2519 | 0 | nghttp2_active_outbound_item *aob = &session->aob; |
2520 | 0 | nghttp2_outbound_item *item = aob->item; |
2521 | 0 | nghttp2_bufs *framebufs = &aob->framebufs; |
2522 | 0 | nghttp2_frame *frame; |
2523 | 0 | nghttp2_stream *stream; |
2524 | |
|
2525 | 0 | frame = &item->frame; |
2526 | |
|
2527 | 0 | if (frame->hd.type == NGHTTP2_DATA) { |
2528 | 0 | nghttp2_data_aux_data *aux_data; |
2529 | |
|
2530 | 0 | aux_data = &item->aux_data.data; |
2531 | |
|
2532 | 0 | stream = nghttp2_session_get_stream(session, frame->hd.stream_id); |
2533 | | /* We update flow control window after a frame was completely |
2534 | | sent. This is possible because we choose payload length not to |
2535 | | exceed the window */ |
2536 | 0 | session->remote_window_size -= (int32_t)frame->hd.length; |
2537 | 0 | if (stream) { |
2538 | 0 | stream->remote_window_size -= (int32_t)frame->hd.length; |
2539 | 0 | } |
2540 | |
|
2541 | 0 | if (stream && aux_data->eof) { |
2542 | 0 | rv = nghttp2_stream_detach_item(stream); |
2543 | 0 | if (nghttp2_is_fatal(rv)) { |
2544 | 0 | return rv; |
2545 | 0 | } |
2546 | | |
2547 | | /* Call on_frame_send_callback after |
2548 | | nghttp2_stream_detach_item(), so that application can issue |
2549 | | nghttp2_submit_data() in the callback. */ |
2550 | 0 | if (session->callbacks.on_frame_send_callback) { |
2551 | 0 | rv = session_call_on_frame_send(session, frame); |
2552 | 0 | if (nghttp2_is_fatal(rv)) { |
2553 | 0 | return rv; |
2554 | 0 | } |
2555 | 0 | } |
2556 | | |
2557 | 0 | if (frame->hd.flags & NGHTTP2_FLAG_END_STREAM) { |
2558 | 0 | int stream_closed; |
2559 | |
|
2560 | 0 | stream_closed = |
2561 | 0 | (stream->shut_flags & NGHTTP2_SHUT_RDWR) == NGHTTP2_SHUT_RDWR; |
2562 | |
|
2563 | 0 | nghttp2_stream_shutdown(stream, NGHTTP2_SHUT_WR); |
2564 | |
|
2565 | 0 | rv = nghttp2_session_close_stream_if_shut_rdwr(session, stream); |
2566 | 0 | if (nghttp2_is_fatal(rv)) { |
2567 | 0 | return rv; |
2568 | 0 | } |
2569 | | /* stream may be NULL if it was closed */ |
2570 | 0 | if (stream_closed) { |
2571 | 0 | stream = NULL; |
2572 | 0 | } |
2573 | 0 | } |
2574 | 0 | return 0; |
2575 | 0 | } |
2576 | | |
2577 | 0 | if (session->callbacks.on_frame_send_callback) { |
2578 | 0 | rv = session_call_on_frame_send(session, frame); |
2579 | 0 | if (nghttp2_is_fatal(rv)) { |
2580 | 0 | return rv; |
2581 | 0 | } |
2582 | 0 | } |
2583 | | |
2584 | 0 | return 0; |
2585 | 0 | } |
2586 | | |
2587 | | /* non-DATA frame */ |
2588 | | |
2589 | 0 | if (frame->hd.type == NGHTTP2_HEADERS || |
2590 | 0 | frame->hd.type == NGHTTP2_PUSH_PROMISE) { |
2591 | 0 | if (nghttp2_bufs_next_present(framebufs)) { |
2592 | 0 | DEBUGF("send: CONTINUATION exists, just return\n"); |
2593 | 0 | return 0; |
2594 | 0 | } |
2595 | 0 | } |
2596 | 0 | rv = session_call_on_frame_send(session, frame); |
2597 | 0 | if (nghttp2_is_fatal(rv)) { |
2598 | 0 | return rv; |
2599 | 0 | } |
2600 | 0 | switch (frame->hd.type) { |
2601 | 0 | case NGHTTP2_HEADERS: { |
2602 | 0 | nghttp2_headers_aux_data *aux_data; |
2603 | |
|
2604 | 0 | stream = nghttp2_session_get_stream(session, frame->hd.stream_id); |
2605 | 0 | if (!stream) { |
2606 | 0 | return 0; |
2607 | 0 | } |
2608 | | |
2609 | 0 | switch (frame->headers.cat) { |
2610 | 0 | case NGHTTP2_HCAT_REQUEST: { |
2611 | 0 | stream->state = NGHTTP2_STREAM_OPENING; |
2612 | 0 | if (frame->hd.flags & NGHTTP2_FLAG_END_STREAM) { |
2613 | 0 | nghttp2_stream_shutdown(stream, NGHTTP2_SHUT_WR); |
2614 | 0 | } |
2615 | 0 | rv = nghttp2_session_close_stream_if_shut_rdwr(session, stream); |
2616 | 0 | if (nghttp2_is_fatal(rv)) { |
2617 | 0 | return rv; |
2618 | 0 | } |
2619 | | /* We assume aux_data is a pointer to nghttp2_headers_aux_data */ |
2620 | 0 | aux_data = &item->aux_data.headers; |
2621 | 0 | if (aux_data->data_prd.read_callback) { |
2622 | | /* nghttp2_submit_data() makes a copy of aux_data->data_prd */ |
2623 | 0 | rv = nghttp2_submit_data(session, NGHTTP2_FLAG_END_STREAM, |
2624 | 0 | frame->hd.stream_id, &aux_data->data_prd); |
2625 | 0 | if (nghttp2_is_fatal(rv)) { |
2626 | 0 | return rv; |
2627 | 0 | } |
2628 | | /* TODO nghttp2_submit_data() may fail if stream has already |
2629 | | DATA frame item. We might have to handle it here. */ |
2630 | 0 | } |
2631 | 0 | return 0; |
2632 | 0 | } |
2633 | 0 | case NGHTTP2_HCAT_PUSH_RESPONSE: |
2634 | 0 | stream->flags = (uint8_t)(stream->flags & ~NGHTTP2_STREAM_FLAG_PUSH); |
2635 | 0 | ++session->num_outgoing_streams; |
2636 | | /* Fall through */ |
2637 | 0 | case NGHTTP2_HCAT_RESPONSE: |
2638 | 0 | stream->state = NGHTTP2_STREAM_OPENED; |
2639 | | /* Fall through */ |
2640 | 0 | case NGHTTP2_HCAT_HEADERS: |
2641 | 0 | if (frame->hd.flags & NGHTTP2_FLAG_END_STREAM) { |
2642 | 0 | nghttp2_stream_shutdown(stream, NGHTTP2_SHUT_WR); |
2643 | 0 | } |
2644 | 0 | rv = nghttp2_session_close_stream_if_shut_rdwr(session, stream); |
2645 | 0 | if (nghttp2_is_fatal(rv)) { |
2646 | 0 | return rv; |
2647 | 0 | } |
2648 | | /* We assume aux_data is a pointer to nghttp2_headers_aux_data */ |
2649 | 0 | aux_data = &item->aux_data.headers; |
2650 | 0 | if (aux_data->data_prd.read_callback) { |
2651 | 0 | rv = nghttp2_submit_data(session, NGHTTP2_FLAG_END_STREAM, |
2652 | 0 | frame->hd.stream_id, &aux_data->data_prd); |
2653 | 0 | if (nghttp2_is_fatal(rv)) { |
2654 | 0 | return rv; |
2655 | 0 | } |
2656 | | /* TODO nghttp2_submit_data() may fail if stream has already |
2657 | | DATA frame item. We might have to handle it here. */ |
2658 | 0 | } |
2659 | 0 | return 0; |
2660 | 0 | default: |
2661 | | /* Unreachable */ |
2662 | 0 | assert(0); |
2663 | 0 | return 0; |
2664 | 0 | } |
2665 | 0 | } |
2666 | 0 | case NGHTTP2_PRIORITY: |
2667 | 0 | if (session->server) { |
2668 | 0 | return 0; |
2669 | 0 | ; |
2670 | 0 | } |
2671 | | |
2672 | 0 | stream = nghttp2_session_get_stream_raw(session, frame->hd.stream_id); |
2673 | |
|
2674 | 0 | if (!stream) { |
2675 | 0 | if (!session_detect_idle_stream(session, frame->hd.stream_id)) { |
2676 | 0 | return 0; |
2677 | 0 | } |
2678 | | |
2679 | 0 | stream = nghttp2_session_open_stream( |
2680 | 0 | session, frame->hd.stream_id, NGHTTP2_FLAG_NONE, |
2681 | 0 | &frame->priority.pri_spec, NGHTTP2_STREAM_IDLE, NULL); |
2682 | 0 | if (!stream) { |
2683 | 0 | return NGHTTP2_ERR_NOMEM; |
2684 | 0 | } |
2685 | 0 | } else { |
2686 | 0 | rv = nghttp2_session_reprioritize_stream(session, stream, |
2687 | 0 | &frame->priority.pri_spec); |
2688 | 0 | if (nghttp2_is_fatal(rv)) { |
2689 | 0 | return rv; |
2690 | 0 | } |
2691 | 0 | } |
2692 | | |
2693 | 0 | rv = nghttp2_session_adjust_idle_stream(session); |
2694 | |
|
2695 | 0 | if (nghttp2_is_fatal(rv)) { |
2696 | 0 | return rv; |
2697 | 0 | } |
2698 | | |
2699 | 0 | return 0; |
2700 | 0 | case NGHTTP2_RST_STREAM: |
2701 | 0 | rv = nghttp2_session_close_stream(session, frame->hd.stream_id, |
2702 | 0 | frame->rst_stream.error_code); |
2703 | 0 | if (nghttp2_is_fatal(rv)) { |
2704 | 0 | return rv; |
2705 | 0 | } |
2706 | 0 | return 0; |
2707 | 0 | case NGHTTP2_GOAWAY: { |
2708 | 0 | nghttp2_goaway_aux_data *aux_data; |
2709 | |
|
2710 | 0 | aux_data = &item->aux_data.goaway; |
2711 | |
|
2712 | 0 | if ((aux_data->flags & NGHTTP2_GOAWAY_AUX_SHUTDOWN_NOTICE) == 0) { |
2713 | |
|
2714 | 0 | if (aux_data->flags & NGHTTP2_GOAWAY_AUX_TERM_ON_SEND) { |
2715 | 0 | session->goaway_flags |= NGHTTP2_GOAWAY_TERM_SENT; |
2716 | 0 | } |
2717 | |
|
2718 | 0 | session->goaway_flags |= NGHTTP2_GOAWAY_SENT; |
2719 | |
|
2720 | 0 | rv = session_close_stream_on_goaway(session, frame->goaway.last_stream_id, |
2721 | 0 | 1); |
2722 | |
|
2723 | 0 | if (nghttp2_is_fatal(rv)) { |
2724 | 0 | return rv; |
2725 | 0 | } |
2726 | 0 | } |
2727 | | |
2728 | 0 | return 0; |
2729 | 0 | } |
2730 | 0 | case NGHTTP2_WINDOW_UPDATE: |
2731 | 0 | if (frame->hd.stream_id == 0) { |
2732 | 0 | session->window_update_queued = 0; |
2733 | 0 | if (session->opt_flags & NGHTTP2_OPTMASK_NO_AUTO_WINDOW_UPDATE) { |
2734 | 0 | rv = session_update_connection_consumed_size(session, 0); |
2735 | 0 | } else { |
2736 | 0 | rv = nghttp2_session_update_recv_connection_window_size(session, 0); |
2737 | 0 | } |
2738 | |
|
2739 | 0 | if (nghttp2_is_fatal(rv)) { |
2740 | 0 | return rv; |
2741 | 0 | } |
2742 | | |
2743 | 0 | return 0; |
2744 | 0 | } |
2745 | | |
2746 | 0 | stream = nghttp2_session_get_stream(session, frame->hd.stream_id); |
2747 | 0 | if (!stream) { |
2748 | 0 | return 0; |
2749 | 0 | } |
2750 | | |
2751 | 0 | stream->window_update_queued = 0; |
2752 | | |
2753 | | /* We don't have to send WINDOW_UPDATE if END_STREAM from peer |
2754 | | is seen. */ |
2755 | 0 | if (stream->shut_flags & NGHTTP2_SHUT_RD) { |
2756 | 0 | return 0; |
2757 | 0 | } |
2758 | | |
2759 | 0 | if (session->opt_flags & NGHTTP2_OPTMASK_NO_AUTO_WINDOW_UPDATE) { |
2760 | 0 | rv = session_update_stream_consumed_size(session, stream, 0); |
2761 | 0 | } else { |
2762 | 0 | rv = |
2763 | 0 | nghttp2_session_update_recv_stream_window_size(session, stream, 0, 1); |
2764 | 0 | } |
2765 | |
|
2766 | 0 | if (nghttp2_is_fatal(rv)) { |
2767 | 0 | return rv; |
2768 | 0 | } |
2769 | | |
2770 | 0 | return 0; |
2771 | 0 | default: |
2772 | 0 | return 0; |
2773 | 0 | } |
2774 | 0 | } |
2775 | | |
2776 | | /* |
2777 | | * Called after a frame is sent and session_after_frame_sent1. This |
2778 | | * function is responsible to reset session->aob. |
2779 | | * |
2780 | | * This function returns 0 if it succeeds, or one of the following |
2781 | | * negative error codes: |
2782 | | * |
2783 | | * NGHTTP2_ERR_NOMEM |
2784 | | * Out of memory. |
2785 | | * NGHTTP2_ERR_CALLBACK_FAILURE |
2786 | | * The callback function failed. |
2787 | | */ |
2788 | 0 | static int session_after_frame_sent2(nghttp2_session *session) { |
2789 | 0 | int rv; |
2790 | 0 | nghttp2_active_outbound_item *aob = &session->aob; |
2791 | 0 | nghttp2_outbound_item *item = aob->item; |
2792 | 0 | nghttp2_bufs *framebufs = &aob->framebufs; |
2793 | 0 | nghttp2_frame *frame; |
2794 | 0 | nghttp2_mem *mem; |
2795 | 0 | nghttp2_stream *stream; |
2796 | 0 | nghttp2_data_aux_data *aux_data; |
2797 | |
|
2798 | 0 | mem = &session->mem; |
2799 | 0 | frame = &item->frame; |
2800 | |
|
2801 | 0 | if (frame->hd.type != NGHTTP2_DATA) { |
2802 | |
|
2803 | 0 | if (frame->hd.type == NGHTTP2_HEADERS || |
2804 | 0 | frame->hd.type == NGHTTP2_PUSH_PROMISE) { |
2805 | |
|
2806 | 0 | if (nghttp2_bufs_next_present(framebufs)) { |
2807 | 0 | framebufs->cur = framebufs->cur->next; |
2808 | |
|
2809 | 0 | DEBUGF("send: next CONTINUATION frame, %zu bytes\n", |
2810 | 0 | nghttp2_buf_len(&framebufs->cur->buf)); |
2811 | |
|
2812 | 0 | return 0; |
2813 | 0 | } |
2814 | 0 | } |
2815 | | |
2816 | 0 | active_outbound_item_reset(&session->aob, mem); |
2817 | |
|
2818 | 0 | return 0; |
2819 | 0 | } |
2820 | | |
2821 | | /* DATA frame */ |
2822 | | |
2823 | 0 | aux_data = &item->aux_data.data; |
2824 | | |
2825 | | /* On EOF, we have already detached data. Please note that |
2826 | | application may issue nghttp2_submit_data() in |
2827 | | on_frame_send_callback (call from session_after_frame_sent1), |
2828 | | which attach data to stream. We don't want to detach it. */ |
2829 | 0 | if (aux_data->eof) { |
2830 | 0 | active_outbound_item_reset(aob, mem); |
2831 | |
|
2832 | 0 | return 0; |
2833 | 0 | } |
2834 | | |
2835 | | /* Reset no_copy here because next write may not use this. */ |
2836 | 0 | aux_data->no_copy = 0; |
2837 | |
|
2838 | 0 | stream = nghttp2_session_get_stream(session, frame->hd.stream_id); |
2839 | | |
2840 | | /* If session is closed or RST_STREAM was queued, we won't send |
2841 | | further data. */ |
2842 | 0 | if (nghttp2_session_predicate_data_send(session, stream) != 0) { |
2843 | 0 | if (stream) { |
2844 | 0 | rv = nghttp2_stream_detach_item(stream); |
2845 | |
|
2846 | 0 | if (nghttp2_is_fatal(rv)) { |
2847 | 0 | return rv; |
2848 | 0 | } |
2849 | 0 | } |
2850 | | |
2851 | 0 | active_outbound_item_reset(aob, mem); |
2852 | |
|
2853 | 0 | return 0; |
2854 | 0 | } |
2855 | | |
2856 | 0 | aob->item = NULL; |
2857 | 0 | active_outbound_item_reset(&session->aob, mem); |
2858 | |
|
2859 | 0 | return 0; |
2860 | 0 | } |
2861 | | |
2862 | | static int session_call_send_data(nghttp2_session *session, |
2863 | | nghttp2_outbound_item *item, |
2864 | 0 | nghttp2_bufs *framebufs) { |
2865 | 0 | int rv; |
2866 | 0 | nghttp2_buf *buf; |
2867 | 0 | size_t length; |
2868 | 0 | nghttp2_frame *frame; |
2869 | 0 | nghttp2_data_aux_data *aux_data; |
2870 | |
|
2871 | 0 | buf = &framebufs->cur->buf; |
2872 | 0 | frame = &item->frame; |
2873 | 0 | length = frame->hd.length - frame->data.padlen; |
2874 | 0 | aux_data = &item->aux_data.data; |
2875 | |
|
2876 | 0 | rv = session->callbacks.send_data_callback(session, frame, buf->pos, length, |
2877 | 0 | &aux_data->data_prd.source, |
2878 | 0 | session->user_data); |
2879 | |
|
2880 | 0 | switch (rv) { |
2881 | 0 | case 0: |
2882 | 0 | case NGHTTP2_ERR_WOULDBLOCK: |
2883 | 0 | case NGHTTP2_ERR_PAUSE: |
2884 | 0 | case NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE: |
2885 | 0 | return rv; |
2886 | 0 | default: |
2887 | 0 | return NGHTTP2_ERR_CALLBACK_FAILURE; |
2888 | 0 | } |
2889 | 0 | } |
2890 | | |
2891 | | static ssize_t nghttp2_session_mem_send_internal(nghttp2_session *session, |
2892 | | const uint8_t **data_ptr, |
2893 | 0 | int fast_cb) { |
2894 | 0 | int rv; |
2895 | 0 | nghttp2_active_outbound_item *aob; |
2896 | 0 | nghttp2_bufs *framebufs; |
2897 | 0 | nghttp2_mem *mem; |
2898 | |
|
2899 | 0 | mem = &session->mem; |
2900 | 0 | aob = &session->aob; |
2901 | 0 | framebufs = &aob->framebufs; |
2902 | | |
2903 | | /* We may have idle streams more than we expect (e.g., |
2904 | | nghttp2_session_change_stream_priority() or |
2905 | | nghttp2_session_create_idle_stream()). Adjust them here. */ |
2906 | 0 | rv = nghttp2_session_adjust_idle_stream(session); |
2907 | 0 | if (nghttp2_is_fatal(rv)) { |
2908 | 0 | return rv; |
2909 | 0 | } |
2910 | | |
2911 | 0 | for (;;) { |
2912 | 0 | switch (aob->state) { |
2913 | 0 | case NGHTTP2_OB_POP_ITEM: { |
2914 | 0 | nghttp2_outbound_item *item; |
2915 | |
|
2916 | 0 | item = nghttp2_session_pop_next_ob_item(session); |
2917 | 0 | if (item == NULL) { |
2918 | 0 | return 0; |
2919 | 0 | } |
2920 | | |
2921 | 0 | rv = session_prep_frame(session, item); |
2922 | 0 | if (rv == NGHTTP2_ERR_PAUSE) { |
2923 | 0 | return 0; |
2924 | 0 | } |
2925 | 0 | if (rv == NGHTTP2_ERR_DEFERRED) { |
2926 | 0 | DEBUGF("send: frame transmission deferred\n"); |
2927 | 0 | break; |
2928 | 0 | } |
2929 | 0 | if (rv < 0) { |
2930 | 0 | int32_t opened_stream_id = 0; |
2931 | 0 | uint32_t error_code = NGHTTP2_INTERNAL_ERROR; |
2932 | |
|
2933 | 0 | DEBUGF("send: frame preparation failed with %s\n", |
2934 | 0 | nghttp2_strerror(rv)); |
2935 | | /* TODO If the error comes from compressor, the connection |
2936 | | must be closed. */ |
2937 | 0 | if (item->frame.hd.type != NGHTTP2_DATA && |
2938 | 0 | session->callbacks.on_frame_not_send_callback && is_non_fatal(rv)) { |
2939 | 0 | nghttp2_frame *frame = &item->frame; |
2940 | | /* The library is responsible for the transmission of |
2941 | | WINDOW_UPDATE frame, so we don't call error callback for |
2942 | | it. */ |
2943 | 0 | if (frame->hd.type != NGHTTP2_WINDOW_UPDATE && |
2944 | 0 | session->callbacks.on_frame_not_send_callback( |
2945 | 0 | session, frame, rv, session->user_data) != 0) { |
2946 | |
|
2947 | 0 | nghttp2_outbound_item_free(item, mem); |
2948 | 0 | nghttp2_mem_free(mem, item); |
2949 | |
|
2950 | 0 | return NGHTTP2_ERR_CALLBACK_FAILURE; |
2951 | 0 | } |
2952 | 0 | } |
2953 | | /* We have to close stream opened by failed request HEADERS |
2954 | | or PUSH_PROMISE. */ |
2955 | 0 | switch (item->frame.hd.type) { |
2956 | 0 | case NGHTTP2_HEADERS: |
2957 | 0 | if (item->frame.headers.cat == NGHTTP2_HCAT_REQUEST) { |
2958 | 0 | opened_stream_id = item->frame.hd.stream_id; |
2959 | 0 | if (item->aux_data.headers.canceled) { |
2960 | 0 | error_code = item->aux_data.headers.error_code; |
2961 | 0 | } else { |
2962 | | /* Set error_code to REFUSED_STREAM so that application |
2963 | | can send request again. */ |
2964 | 0 | error_code = NGHTTP2_REFUSED_STREAM; |
2965 | 0 | } |
2966 | 0 | } |
2967 | 0 | break; |
2968 | 0 | case NGHTTP2_PUSH_PROMISE: |
2969 | 0 | opened_stream_id = item->frame.push_promise.promised_stream_id; |
2970 | 0 | break; |
2971 | 0 | } |
2972 | 0 | if (opened_stream_id) { |
2973 | | /* careful not to override rv */ |
2974 | 0 | int rv2; |
2975 | 0 | rv2 = nghttp2_session_close_stream(session, opened_stream_id, |
2976 | 0 | error_code); |
2977 | |
|
2978 | 0 | if (nghttp2_is_fatal(rv2)) { |
2979 | 0 | return rv2; |
2980 | 0 | } |
2981 | 0 | } |
2982 | | |
2983 | 0 | nghttp2_outbound_item_free(item, mem); |
2984 | 0 | nghttp2_mem_free(mem, item); |
2985 | 0 | active_outbound_item_reset(aob, mem); |
2986 | |
|
2987 | 0 | if (rv == NGHTTP2_ERR_HEADER_COMP) { |
2988 | | /* If header compression error occurred, should terminiate |
2989 | | connection. */ |
2990 | 0 | rv = nghttp2_session_terminate_session(session, |
2991 | 0 | NGHTTP2_INTERNAL_ERROR); |
2992 | 0 | } |
2993 | 0 | if (nghttp2_is_fatal(rv)) { |
2994 | 0 | return rv; |
2995 | 0 | } |
2996 | 0 | break; |
2997 | 0 | } |
2998 | | |
2999 | 0 | aob->item = item; |
3000 | |
|
3001 | 0 | nghttp2_bufs_rewind(framebufs); |
3002 | |
|
3003 | 0 | if (item->frame.hd.type != NGHTTP2_DATA) { |
3004 | 0 | nghttp2_frame *frame; |
3005 | |
|
3006 | 0 | frame = &item->frame; |
3007 | |
|
3008 | 0 | DEBUGF("send: next frame: payloadlen=%zu, type=%u, flags=0x%02x, " |
3009 | 0 | "stream_id=%d\n", |
3010 | 0 | frame->hd.length, frame->hd.type, frame->hd.flags, |
3011 | 0 | frame->hd.stream_id); |
3012 | |
|
3013 | 0 | rv = session_call_before_frame_send(session, frame); |
3014 | 0 | if (nghttp2_is_fatal(rv)) { |
3015 | 0 | return rv; |
3016 | 0 | } |
3017 | | |
3018 | 0 | if (rv == NGHTTP2_ERR_CANCEL) { |
3019 | 0 | int32_t opened_stream_id = 0; |
3020 | 0 | uint32_t error_code = NGHTTP2_INTERNAL_ERROR; |
3021 | |
|
3022 | 0 | if (session->callbacks.on_frame_not_send_callback) { |
3023 | 0 | if (session->callbacks.on_frame_not_send_callback( |
3024 | 0 | session, frame, rv, session->user_data) != 0) { |
3025 | 0 | return NGHTTP2_ERR_CALLBACK_FAILURE; |
3026 | 0 | } |
3027 | 0 | } |
3028 | | |
3029 | | /* We have to close stream opened by canceled request |
3030 | | HEADERS or PUSH_PROMISE. */ |
3031 | 0 | switch (item->frame.hd.type) { |
3032 | 0 | case NGHTTP2_HEADERS: |
3033 | 0 | if (item->frame.headers.cat == NGHTTP2_HCAT_REQUEST) { |
3034 | 0 | opened_stream_id = item->frame.hd.stream_id; |
3035 | | /* We don't have to check |
3036 | | item->aux_data.headers.canceled since it has already |
3037 | | been checked. */ |
3038 | | /* Set error_code to REFUSED_STREAM so that application |
3039 | | can send request again. */ |
3040 | 0 | error_code = NGHTTP2_REFUSED_STREAM; |
3041 | 0 | } |
3042 | 0 | break; |
3043 | 0 | case NGHTTP2_PUSH_PROMISE: |
3044 | 0 | opened_stream_id = item->frame.push_promise.promised_stream_id; |
3045 | 0 | break; |
3046 | 0 | } |
3047 | 0 | if (opened_stream_id) { |
3048 | | /* careful not to override rv */ |
3049 | 0 | int rv2; |
3050 | 0 | rv2 = nghttp2_session_close_stream(session, opened_stream_id, |
3051 | 0 | error_code); |
3052 | |
|
3053 | 0 | if (nghttp2_is_fatal(rv2)) { |
3054 | 0 | return rv2; |
3055 | 0 | } |
3056 | 0 | } |
3057 | | |
3058 | 0 | active_outbound_item_reset(aob, mem); |
3059 | |
|
3060 | 0 | break; |
3061 | 0 | } |
3062 | 0 | } else { |
3063 | 0 | DEBUGF("send: next frame: DATA\n"); |
3064 | |
|
3065 | 0 | if (item->aux_data.data.no_copy) { |
3066 | 0 | aob->state = NGHTTP2_OB_SEND_NO_COPY; |
3067 | 0 | break; |
3068 | 0 | } |
3069 | 0 | } |
3070 | | |
3071 | 0 | DEBUGF("send: start transmitting frame type=%u, length=%zd\n", |
3072 | 0 | framebufs->cur->buf.pos[3], |
3073 | 0 | framebufs->cur->buf.last - framebufs->cur->buf.pos); |
3074 | |
|
3075 | 0 | aob->state = NGHTTP2_OB_SEND_DATA; |
3076 | |
|
3077 | 0 | break; |
3078 | 0 | } |
3079 | 0 | case NGHTTP2_OB_SEND_DATA: { |
3080 | 0 | size_t datalen; |
3081 | 0 | nghttp2_buf *buf; |
3082 | |
|
3083 | 0 | buf = &framebufs->cur->buf; |
3084 | |
|
3085 | 0 | if (buf->pos == buf->last) { |
3086 | 0 | DEBUGF("send: end transmission of a frame\n"); |
3087 | | |
3088 | | /* Frame has completely sent */ |
3089 | 0 | if (fast_cb) { |
3090 | 0 | rv = session_after_frame_sent2(session); |
3091 | 0 | } else { |
3092 | 0 | rv = session_after_frame_sent1(session); |
3093 | 0 | if (rv < 0) { |
3094 | | /* FATAL */ |
3095 | 0 | assert(nghttp2_is_fatal(rv)); |
3096 | 0 | return rv; |
3097 | 0 | } |
3098 | 0 | rv = session_after_frame_sent2(session); |
3099 | 0 | } |
3100 | 0 | if (rv < 0) { |
3101 | | /* FATAL */ |
3102 | 0 | assert(nghttp2_is_fatal(rv)); |
3103 | 0 | return rv; |
3104 | 0 | } |
3105 | | /* We have already adjusted the next state */ |
3106 | 0 | break; |
3107 | 0 | } |
3108 | | |
3109 | 0 | *data_ptr = buf->pos; |
3110 | 0 | datalen = nghttp2_buf_len(buf); |
3111 | | |
3112 | | /* We increment the offset here. If send_callback does not send |
3113 | | everything, we will adjust it. */ |
3114 | 0 | buf->pos += datalen; |
3115 | |
|
3116 | 0 | return (ssize_t)datalen; |
3117 | 0 | } |
3118 | 0 | case NGHTTP2_OB_SEND_NO_COPY: { |
3119 | 0 | nghttp2_stream *stream; |
3120 | 0 | nghttp2_frame *frame; |
3121 | 0 | int pause; |
3122 | |
|
3123 | 0 | DEBUGF("send: no copy DATA\n"); |
3124 | |
|
3125 | 0 | frame = &aob->item->frame; |
3126 | |
|
3127 | 0 | stream = nghttp2_session_get_stream(session, frame->hd.stream_id); |
3128 | 0 | if (stream == NULL) { |
3129 | 0 | DEBUGF("send: no copy DATA cancelled because stream was closed\n"); |
3130 | |
|
3131 | 0 | active_outbound_item_reset(aob, mem); |
3132 | |
|
3133 | 0 | break; |
3134 | 0 | } |
3135 | | |
3136 | 0 | rv = session_call_send_data(session, aob->item, framebufs); |
3137 | 0 | if (nghttp2_is_fatal(rv)) { |
3138 | 0 | return rv; |
3139 | 0 | } |
3140 | | |
3141 | 0 | if (rv == NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE) { |
3142 | 0 | rv = nghttp2_stream_detach_item(stream); |
3143 | |
|
3144 | 0 | if (nghttp2_is_fatal(rv)) { |
3145 | 0 | return rv; |
3146 | 0 | } |
3147 | | |
3148 | 0 | rv = nghttp2_session_add_rst_stream(session, frame->hd.stream_id, |
3149 | 0 | NGHTTP2_INTERNAL_ERROR); |
3150 | 0 | if (nghttp2_is_fatal(rv)) { |
3151 | 0 | return rv; |
3152 | 0 | } |
3153 | | |
3154 | 0 | active_outbound_item_reset(aob, mem); |
3155 | |
|
3156 | 0 | break; |
3157 | 0 | } |
3158 | | |
3159 | 0 | if (rv == NGHTTP2_ERR_WOULDBLOCK) { |
3160 | 0 | return 0; |
3161 | 0 | } |
3162 | | |
3163 | 0 | pause = (rv == NGHTTP2_ERR_PAUSE); |
3164 | |
|
3165 | 0 | rv = session_after_frame_sent1(session); |
3166 | 0 | if (rv < 0) { |
3167 | 0 | assert(nghttp2_is_fatal(rv)); |
3168 | 0 | return rv; |
3169 | 0 | } |
3170 | 0 | rv = session_after_frame_sent2(session); |
3171 | 0 | if (rv < 0) { |
3172 | 0 | assert(nghttp2_is_fatal(rv)); |
3173 | 0 | return rv; |
3174 | 0 | } |
3175 | | |
3176 | | /* We have already adjusted the next state */ |
3177 | | |
3178 | 0 | if (pause) { |
3179 | 0 | return 0; |
3180 | 0 | } |
3181 | | |
3182 | 0 | break; |
3183 | 0 | } |
3184 | 0 | case NGHTTP2_OB_SEND_CLIENT_MAGIC: { |
3185 | 0 | size_t datalen; |
3186 | 0 | nghttp2_buf *buf; |
3187 | |
|
3188 | 0 | buf = &framebufs->cur->buf; |
3189 | |
|
3190 | 0 | if (buf->pos == buf->last) { |
3191 | 0 | DEBUGF("send: end transmission of client magic\n"); |
3192 | 0 | active_outbound_item_reset(aob, mem); |
3193 | 0 | break; |
3194 | 0 | } |
3195 | | |
3196 | 0 | *data_ptr = buf->pos; |
3197 | 0 | datalen = nghttp2_buf_len(buf); |
3198 | |
|
3199 | 0 | buf->pos += datalen; |
3200 | |
|
3201 | 0 | return (ssize_t)datalen; |
3202 | 0 | } |
3203 | 0 | } |
3204 | 0 | } |
3205 | 0 | } |
3206 | | |
3207 | | ssize_t nghttp2_session_mem_send(nghttp2_session *session, |
3208 | 0 | const uint8_t **data_ptr) { |
3209 | 0 | int rv; |
3210 | 0 | ssize_t len; |
3211 | |
|
3212 | 0 | *data_ptr = NULL; |
3213 | |
|
3214 | 0 | len = nghttp2_session_mem_send_internal(session, data_ptr, 1); |
3215 | 0 | if (len <= 0) { |
3216 | 0 | return len; |
3217 | 0 | } |
3218 | | |
3219 | 0 | if (session->aob.item) { |
3220 | | /* We have to call session_after_frame_sent1 here to handle stream |
3221 | | closure upon transmission of frames. Otherwise, END_STREAM may |
3222 | | be reached to client before we call nghttp2_session_mem_send |
3223 | | again and we may get exceeding number of incoming streams. */ |
3224 | 0 | rv = session_after_frame_sent1(session); |
3225 | 0 | if (rv < 0) { |
3226 | 0 | assert(nghttp2_is_fatal(rv)); |
3227 | 0 | return (ssize_t)rv; |
3228 | 0 | } |
3229 | 0 | } |
3230 | | |
3231 | 0 | return len; |
3232 | 0 | } |
3233 | | |
3234 | 0 | int nghttp2_session_send(nghttp2_session *session) { |
3235 | 0 | const uint8_t *data = NULL; |
3236 | 0 | ssize_t datalen; |
3237 | 0 | ssize_t sentlen; |
3238 | 0 | nghttp2_bufs *framebufs; |
3239 | |
|
3240 | 0 | framebufs = &session->aob.framebufs; |
3241 | |
|
3242 | 0 | for (;;) { |
3243 | 0 | datalen = nghttp2_session_mem_send_internal(session, &data, 0); |
3244 | 0 | if (datalen <= 0) { |
3245 | 0 | return (int)datalen; |
3246 | 0 | } |
3247 | 0 | sentlen = session->callbacks.send_callback(session, data, (size_t)datalen, |
3248 | 0 | 0, session->user_data); |
3249 | 0 | if (sentlen < 0) { |
3250 | 0 | if (sentlen == NGHTTP2_ERR_WOULDBLOCK) { |
3251 | | /* Transmission canceled. Rewind the offset */ |
3252 | 0 | framebufs->cur->buf.pos -= datalen; |
3253 | |
|
3254 | 0 | return 0; |
3255 | 0 | } |
3256 | 0 | return NGHTTP2_ERR_CALLBACK_FAILURE; |
3257 | 0 | } |
3258 | | /* Rewind the offset to the amount of unsent bytes */ |
3259 | 0 | framebufs->cur->buf.pos -= datalen - sentlen; |
3260 | 0 | } |
3261 | 0 | } |
3262 | | |
3263 | | static ssize_t session_recv(nghttp2_session *session, uint8_t *buf, |
3264 | 0 | size_t len) { |
3265 | 0 | ssize_t rv; |
3266 | 0 | rv = session->callbacks.recv_callback(session, buf, len, 0, |
3267 | 0 | session->user_data); |
3268 | 0 | if (rv > 0) { |
3269 | 0 | if ((size_t)rv > len) { |
3270 | 0 | return NGHTTP2_ERR_CALLBACK_FAILURE; |
3271 | 0 | } |
3272 | 0 | } else if (rv < 0 && rv != NGHTTP2_ERR_WOULDBLOCK && rv != NGHTTP2_ERR_EOF) { |
3273 | 0 | return NGHTTP2_ERR_CALLBACK_FAILURE; |
3274 | 0 | } |
3275 | 0 | return rv; |
3276 | 0 | } |
3277 | | |
3278 | | static int session_call_on_begin_frame(nghttp2_session *session, |
3279 | 0 | const nghttp2_frame_hd *hd) { |
3280 | 0 | int rv; |
3281 | |
|
3282 | 0 | if (session->callbacks.on_begin_frame_callback) { |
3283 | |
|
3284 | 0 | rv = session->callbacks.on_begin_frame_callback(session, hd, |
3285 | 0 | session->user_data); |
3286 | |
|
3287 | 0 | if (rv != 0) { |
3288 | 0 | return NGHTTP2_ERR_CALLBACK_FAILURE; |
3289 | 0 | } |
3290 | 0 | } |
3291 | | |
3292 | 0 | return 0; |
3293 | 0 | } |
3294 | | |
3295 | | static int session_call_on_frame_received(nghttp2_session *session, |
3296 | 0 | nghttp2_frame *frame) { |
3297 | 0 | int rv; |
3298 | 0 | if (session->callbacks.on_frame_recv_callback) { |
3299 | 0 | rv = session->callbacks.on_frame_recv_callback(session, frame, |
3300 | 0 | session->user_data); |
3301 | 0 | if (rv != 0) { |
3302 | 0 | return NGHTTP2_ERR_CALLBACK_FAILURE; |
3303 | 0 | } |
3304 | 0 | } |
3305 | 0 | return 0; |
3306 | 0 | } |
3307 | | |
3308 | | static int session_call_on_begin_headers(nghttp2_session *session, |
3309 | 0 | nghttp2_frame *frame) { |
3310 | 0 | int rv; |
3311 | 0 | DEBUGF("recv: call on_begin_headers callback stream_id=%d\n", |
3312 | 0 | frame->hd.stream_id); |
3313 | 0 | if (session->callbacks.on_begin_headers_callback) { |
3314 | 0 | rv = session->callbacks.on_begin_headers_callback(session, frame, |
3315 | 0 | session->user_data); |
3316 | 0 | if (rv == NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE) { |
3317 | 0 | return rv; |
3318 | 0 | } |
3319 | 0 | if (rv != 0) { |
3320 | 0 | return NGHTTP2_ERR_CALLBACK_FAILURE; |
3321 | 0 | } |
3322 | 0 | } |
3323 | 0 | return 0; |
3324 | 0 | } |
3325 | | |
3326 | | static int session_call_on_header(nghttp2_session *session, |
3327 | | const nghttp2_frame *frame, |
3328 | 0 | const nghttp2_hd_nv *nv) { |
3329 | 0 | int rv = 0; |
3330 | 0 | if (session->callbacks.on_header_callback2) { |
3331 | 0 | rv = session->callbacks.on_header_callback2( |
3332 | 0 | session, frame, nv->name, nv->value, nv->flags, session->user_data); |
3333 | 0 | } else if (session->callbacks.on_header_callback) { |
3334 | 0 | rv = session->callbacks.on_header_callback( |
3335 | 0 | session, frame, nv->name->base, nv->name->len, nv->value->base, |
3336 | 0 | nv->value->len, nv->flags, session->user_data); |
3337 | 0 | } |
3338 | |
|
3339 | 0 | if (rv == NGHTTP2_ERR_PAUSE || rv == NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE) { |
3340 | 0 | return rv; |
3341 | 0 | } |
3342 | 0 | if (rv != 0) { |
3343 | 0 | return NGHTTP2_ERR_CALLBACK_FAILURE; |
3344 | 0 | } |
3345 | | |
3346 | 0 | return 0; |
3347 | 0 | } |
3348 | | |
3349 | | static int session_call_on_invalid_header(nghttp2_session *session, |
3350 | | const nghttp2_frame *frame, |
3351 | 0 | const nghttp2_hd_nv *nv) { |
3352 | 0 | int rv; |
3353 | 0 | if (session->callbacks.on_invalid_header_callback2) { |
3354 | 0 | rv = session->callbacks.on_invalid_header_callback2( |
3355 | 0 | session, frame, nv->name, nv->value, nv->flags, session->user_data); |
3356 | 0 | } else if (session->callbacks.on_invalid_header_callback) { |
3357 | 0 | rv = session->callbacks.on_invalid_header_callback( |
3358 | 0 | session, frame, nv->name->base, nv->name->len, nv->value->base, |
3359 | 0 | nv->value->len, nv->flags, session->user_data); |
3360 | 0 | } else { |
3361 | 0 | return NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE; |
3362 | 0 | } |
3363 | | |
3364 | 0 | if (rv == NGHTTP2_ERR_PAUSE || rv == NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE) { |
3365 | 0 | return rv; |
3366 | 0 | } |
3367 | 0 | if (rv != 0) { |
3368 | 0 | return NGHTTP2_ERR_CALLBACK_FAILURE; |
3369 | 0 | } |
3370 | | |
3371 | 0 | return 0; |
3372 | 0 | } |
3373 | | |
3374 | | static int |
3375 | | session_call_on_extension_chunk_recv_callback(nghttp2_session *session, |
3376 | 0 | const uint8_t *data, size_t len) { |
3377 | 0 | int rv; |
3378 | 0 | nghttp2_inbound_frame *iframe = &session->iframe; |
3379 | 0 | nghttp2_frame *frame = &iframe->frame; |
3380 | |
|
3381 | 0 | if (session->callbacks.on_extension_chunk_recv_callback) { |
3382 | 0 | rv = session->callbacks.on_extension_chunk_recv_callback( |
3383 | 0 | session, &frame->hd, data, len, session->user_data); |
3384 | 0 | if (rv == NGHTTP2_ERR_CANCEL) { |
3385 | 0 | return rv; |
3386 | 0 | } |
3387 | 0 | if (rv != 0) { |
3388 | 0 | return NGHTTP2_ERR_CALLBACK_FAILURE; |
3389 | 0 | } |
3390 | 0 | } |
3391 | | |
3392 | 0 | return 0; |
3393 | 0 | } |
3394 | | |
3395 | 0 | static int session_call_unpack_extension_callback(nghttp2_session *session) { |
3396 | 0 | int rv; |
3397 | 0 | nghttp2_inbound_frame *iframe = &session->iframe; |
3398 | 0 | nghttp2_frame *frame = &iframe->frame; |
3399 | 0 | void *payload = NULL; |
3400 | |
|
3401 | 0 | rv = session->callbacks.unpack_extension_callback( |
3402 | 0 | session, &payload, &frame->hd, session->user_data); |
3403 | 0 | if (rv == NGHTTP2_ERR_CANCEL) { |
3404 | 0 | return rv; |
3405 | 0 | } |
3406 | 0 | if (rv != 0) { |
3407 | 0 | return NGHTTP2_ERR_CALLBACK_FAILURE; |
3408 | 0 | } |
3409 | | |
3410 | 0 | frame->ext.payload = payload; |
3411 | |
|
3412 | 0 | return 0; |
3413 | 0 | } |
3414 | | |
3415 | | /* |
3416 | | * Handles frame size error. |
3417 | | * |
3418 | | * This function returns 0 if it succeeds, or one of the following |
3419 | | * negative error codes: |
3420 | | * |
3421 | | * NGHTTP2_ERR_NOMEM |
3422 | | * Out of memory. |
3423 | | */ |
3424 | 0 | static int session_handle_frame_size_error(nghttp2_session *session) { |
3425 | | /* TODO Currently no callback is called for this error, because we |
3426 | | call this callback before reading any payload */ |
3427 | 0 | return nghttp2_session_terminate_session(session, NGHTTP2_FRAME_SIZE_ERROR); |
3428 | 0 | } |
3429 | | |
3430 | 0 | static uint32_t get_error_code_from_lib_error_code(int lib_error_code) { |
3431 | 0 | switch (lib_error_code) { |
3432 | 0 | case NGHTTP2_ERR_STREAM_CLOSED: |
3433 | 0 | return NGHTTP2_STREAM_CLOSED; |
3434 | 0 | case NGHTTP2_ERR_HEADER_COMP: |
3435 | 0 | return NGHTTP2_COMPRESSION_ERROR; |
3436 | 0 | case NGHTTP2_ERR_FRAME_SIZE_ERROR: |
3437 | 0 | return NGHTTP2_FRAME_SIZE_ERROR; |
3438 | 0 | case NGHTTP2_ERR_FLOW_CONTROL: |
3439 | 0 | return NGHTTP2_FLOW_CONTROL_ERROR; |
3440 | 0 | case NGHTTP2_ERR_REFUSED_STREAM: |
3441 | 0 | return NGHTTP2_REFUSED_STREAM; |
3442 | 0 | case NGHTTP2_ERR_PROTO: |
3443 | 0 | case NGHTTP2_ERR_HTTP_HEADER: |
3444 | 0 | case NGHTTP2_ERR_HTTP_MESSAGING: |
3445 | 0 | return NGHTTP2_PROTOCOL_ERROR; |
3446 | 0 | default: |
3447 | 0 | return NGHTTP2_INTERNAL_ERROR; |
3448 | 0 | } |
3449 | 0 | } |
3450 | | |
3451 | | /* |
3452 | | * Calls on_invalid_frame_recv_callback if it is set to |session|. |
3453 | | * |
3454 | | * This function returns 0 if it succeeds, or one of the following |
3455 | | * negative error codes: |
3456 | | * |
3457 | | * NGHTTP2_ERR_CALLBACK_FAILURE |
3458 | | * User defined callback function fails. |
3459 | | */ |
3460 | | static int session_call_on_invalid_frame_recv_callback(nghttp2_session *session, |
3461 | | nghttp2_frame *frame, |
3462 | 0 | int lib_error_code) { |
3463 | 0 | if (session->callbacks.on_invalid_frame_recv_callback) { |
3464 | 0 | if (session->callbacks.on_invalid_frame_recv_callback( |
3465 | 0 | session, frame, lib_error_code, session->user_data) != 0) { |
3466 | 0 | return NGHTTP2_ERR_CALLBACK_FAILURE; |
3467 | 0 | } |
3468 | 0 | } |
3469 | 0 | return 0; |
3470 | 0 | } |
3471 | | |
3472 | | static int session_handle_invalid_stream2(nghttp2_session *session, |
3473 | | int32_t stream_id, |
3474 | | nghttp2_frame *frame, |
3475 | 0 | int lib_error_code) { |
3476 | 0 | int rv; |
3477 | 0 | rv = nghttp2_session_add_rst_stream( |
3478 | 0 | session, stream_id, get_error_code_from_lib_error_code(lib_error_code)); |
3479 | 0 | if (rv != 0) { |
3480 | 0 | return rv; |
3481 | 0 | } |
3482 | 0 | if (session->callbacks.on_invalid_frame_recv_callback) { |
3483 | 0 | if (session->callbacks.on_invalid_frame_recv_callback( |
3484 | 0 | session, frame, lib_error_code, session->user_data) != 0) { |
3485 | 0 | return NGHTTP2_ERR_CALLBACK_FAILURE; |
3486 | 0 | } |
3487 | 0 | } |
3488 | 0 | return 0; |
3489 | 0 | } |
3490 | | |
3491 | | static int session_handle_invalid_stream(nghttp2_session *session, |
3492 | | nghttp2_frame *frame, |
3493 | 0 | int lib_error_code) { |
3494 | 0 | return session_handle_invalid_stream2(session, frame->hd.stream_id, frame, |
3495 | 0 | lib_error_code); |
3496 | 0 | } |
3497 | | |
3498 | | static int session_inflate_handle_invalid_stream(nghttp2_session *session, |
3499 | | nghttp2_frame *frame, |
3500 | 0 | int lib_error_code) { |
3501 | 0 | int rv; |
3502 | 0 | rv = session_handle_invalid_stream(session, frame, lib_error_code); |
3503 | 0 | if (nghttp2_is_fatal(rv)) { |
3504 | 0 | return rv; |
3505 | 0 | } |
3506 | 0 | return NGHTTP2_ERR_IGN_HEADER_BLOCK; |
3507 | 0 | } |
3508 | | |
3509 | | /* |
3510 | | * Handles invalid frame which causes connection error. |
3511 | | */ |
3512 | | static int session_handle_invalid_connection(nghttp2_session *session, |
3513 | | nghttp2_frame *frame, |
3514 | | int lib_error_code, |
3515 | 0 | const char *reason) { |
3516 | 0 | if (session->callbacks.on_invalid_frame_recv_callback) { |
3517 | 0 | if (session->callbacks.on_invalid_frame_recv_callback( |
3518 | 0 | session, frame, lib_error_code, session->user_data) != 0) { |
3519 | 0 | return NGHTTP2_ERR_CALLBACK_FAILURE; |
3520 | 0 | } |
3521 | 0 | } |
3522 | 0 | return nghttp2_session_terminate_session_with_reason( |
3523 | 0 | session, get_error_code_from_lib_error_code(lib_error_code), reason); |
3524 | 0 | } |
3525 | | |
3526 | | static int session_inflate_handle_invalid_connection(nghttp2_session *session, |
3527 | | nghttp2_frame *frame, |
3528 | | int lib_error_code, |
3529 | 0 | const char *reason) { |
3530 | 0 | int rv; |
3531 | 0 | rv = |
3532 | 0 | session_handle_invalid_connection(session, frame, lib_error_code, reason); |
3533 | 0 | if (nghttp2_is_fatal(rv)) { |
3534 | 0 | return rv; |
3535 | 0 | } |
3536 | 0 | return NGHTTP2_ERR_IGN_HEADER_BLOCK; |
3537 | 0 | } |
3538 | | |
3539 | | /* |
3540 | | * Inflates header block in the memory pointed by |in| with |inlen| |
3541 | | * bytes. If this function returns NGHTTP2_ERR_PAUSE, the caller must |
3542 | | * call this function again, until it returns 0 or one of negative |
3543 | | * error code. If |call_header_cb| is zero, the on_header_callback |
3544 | | * are not invoked and the function never return NGHTTP2_ERR_PAUSE. If |
3545 | | * the given |in| is the last chunk of header block, the |final| must |
3546 | | * be nonzero. If header block is successfully processed (which is |
3547 | | * indicated by the return value 0, NGHTTP2_ERR_PAUSE or |
3548 | | * NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE), the number of processed |
3549 | | * input bytes is assigned to the |*readlen_ptr|. |
3550 | | * |
3551 | | * This function return 0 if it succeeds, or one of the negative error |
3552 | | * codes: |
3553 | | * |
3554 | | * NGHTTP2_ERR_CALLBACK_FAILURE |
3555 | | * The callback function failed. |
3556 | | * NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE |
3557 | | * The callback returns this error code, indicating that this |
3558 | | * stream should be RST_STREAMed. |
3559 | | * NGHTTP2_ERR_NOMEM |
3560 | | * Out of memory. |
3561 | | * NGHTTP2_ERR_PAUSE |
3562 | | * The callback function returned NGHTTP2_ERR_PAUSE |
3563 | | * NGHTTP2_ERR_HEADER_COMP |
3564 | | * Header decompression failed |
3565 | | */ |
3566 | | static int inflate_header_block(nghttp2_session *session, nghttp2_frame *frame, |
3567 | | size_t *readlen_ptr, uint8_t *in, size_t inlen, |
3568 | 0 | int final, int call_header_cb) { |
3569 | 0 | ssize_t proclen; |
3570 | 0 | int rv; |
3571 | 0 | int inflate_flags; |
3572 | 0 | nghttp2_hd_nv nv; |
3573 | 0 | nghttp2_stream *stream; |
3574 | 0 | nghttp2_stream *subject_stream; |
3575 | 0 | int trailer = 0; |
3576 | |
|
3577 | 0 | *readlen_ptr = 0; |
3578 | 0 | stream = nghttp2_session_get_stream(session, frame->hd.stream_id); |
3579 | |
|
3580 | 0 | if (frame->hd.type == NGHTTP2_PUSH_PROMISE) { |
3581 | 0 | subject_stream = nghttp2_session_get_stream( |
3582 | 0 | session, frame->push_promise.promised_stream_id); |
3583 | 0 | } else { |
3584 | 0 | subject_stream = stream; |
3585 | 0 | trailer = session_trailer_headers(session, stream, frame); |
3586 | 0 | } |
3587 | |
|
3588 | 0 | DEBUGF("recv: decoding header block %zu bytes\n", inlen); |
3589 | 0 | for (;;) { |
3590 | 0 | inflate_flags = 0; |
3591 | 0 | proclen = nghttp2_hd_inflate_hd_nv(&session->hd_inflater, &nv, |
3592 | 0 | &inflate_flags, in, inlen, final); |
3593 | 0 | if (nghttp2_is_fatal((int)proclen)) { |
3594 | 0 | return (int)proclen; |
3595 | 0 | } |
3596 | 0 | if (proclen < 0) { |
3597 | 0 | if (session->iframe.state == NGHTTP2_IB_READ_HEADER_BLOCK) { |
3598 | 0 | if (subject_stream && subject_stream->state != NGHTTP2_STREAM_CLOSING) { |
3599 | | /* Adding RST_STREAM here is very important. It prevents |
3600 | | from invoking subsequent callbacks for the same stream |
3601 | | ID. */ |
3602 | 0 | rv = nghttp2_session_add_rst_stream( |
3603 | 0 | session, subject_stream->stream_id, NGHTTP2_COMPRESSION_ERROR); |
3604 | |
|
3605 | 0 | if (nghttp2_is_fatal(rv)) { |
3606 | 0 | return rv; |
3607 | 0 | } |
3608 | 0 | } |
3609 | 0 | } |
3610 | 0 | rv = |
3611 | 0 | nghttp2_session_terminate_session(session, NGHTTP2_COMPRESSION_ERROR); |
3612 | 0 | if (nghttp2_is_fatal(rv)) { |
3613 | 0 | return rv; |
3614 | 0 | } |
3615 | | |
3616 | 0 | return NGHTTP2_ERR_HEADER_COMP; |
3617 | 0 | } |
3618 | 0 | in += proclen; |
3619 | 0 | inlen -= (size_t)proclen; |
3620 | 0 | *readlen_ptr += (size_t)proclen; |
3621 | |
|
3622 | 0 | DEBUGF("recv: proclen=%zd\n", proclen); |
3623 | |
|
3624 | 0 | if (call_header_cb && (inflate_flags & NGHTTP2_HD_INFLATE_EMIT)) { |
3625 | 0 | rv = 0; |
3626 | 0 | if (subject_stream) { |
3627 | 0 | if (session_enforce_http_messaging(session)) { |
3628 | 0 | rv = nghttp2_http_on_header(session, subject_stream, frame, &nv, |
3629 | 0 | trailer); |
3630 | |
|
3631 | 0 | if (rv == NGHTTP2_ERR_IGN_HTTP_HEADER) { |
3632 | | /* Don't overwrite rv here */ |
3633 | 0 | int rv2; |
3634 | |
|
3635 | 0 | rv2 = session_call_on_invalid_header(session, frame, &nv); |
3636 | 0 | if (rv2 == NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE) { |
3637 | 0 | rv = NGHTTP2_ERR_HTTP_HEADER; |
3638 | 0 | } else { |
3639 | 0 | if (rv2 != 0) { |
3640 | 0 | return rv2; |
3641 | 0 | } |
3642 | | |
3643 | | /* header is ignored */ |
3644 | 0 | DEBUGF("recv: HTTP ignored: type=%u, id=%d, header %.*s: %.*s\n", |
3645 | 0 | frame->hd.type, frame->hd.stream_id, (int)nv.name->len, |
3646 | 0 | nv.name->base, (int)nv.value->len, nv.value->base); |
3647 | |
|
3648 | 0 | rv2 = session_call_error_callback( |
3649 | 0 | session, NGHTTP2_ERR_HTTP_HEADER, |
3650 | 0 | "Ignoring received invalid HTTP header field: frame type: " |
3651 | 0 | "%u, stream: %d, name: [%.*s], value: [%.*s]", |
3652 | 0 | frame->hd.type, frame->hd.stream_id, (int)nv.name->len, |
3653 | 0 | nv.name->base, (int)nv.value->len, nv.value->base); |
3654 | |
|
3655 | 0 | if (nghttp2_is_fatal(rv2)) { |
3656 | 0 | return rv2; |
3657 | 0 | } |
3658 | 0 | } |
3659 | 0 | } |
3660 | | |
3661 | 0 | if (rv == NGHTTP2_ERR_HTTP_HEADER) { |
3662 | 0 | DEBUGF("recv: HTTP error: type=%u, id=%d, header %.*s: %.*s\n", |
3663 | 0 | frame->hd.type, frame->hd.stream_id, (int)nv.name->len, |
3664 | 0 | nv.name->base, (int)nv.value->len, nv.value->base); |
3665 | |
|
3666 | 0 | rv = session_call_error_callback( |
3667 | 0 | session, NGHTTP2_ERR_HTTP_HEADER, |
3668 | 0 | "Invalid HTTP header field was received: frame type: " |
3669 | 0 | "%u, stream: %d, name: [%.*s], value: [%.*s]", |
3670 | 0 | frame->hd.type, frame->hd.stream_id, (int)nv.name->len, |
3671 | 0 | nv.name->base, (int)nv.value->len, nv.value->base); |
3672 | |
|
3673 | 0 | if (nghttp2_is_fatal(rv)) { |
3674 | 0 | return rv; |
3675 | 0 | } |
3676 | | |
3677 | 0 | rv = session_handle_invalid_stream2(session, |
3678 | 0 | subject_stream->stream_id, |
3679 | 0 | frame, NGHTTP2_ERR_HTTP_HEADER); |
3680 | 0 | if (nghttp2_is_fatal(rv)) { |
3681 | 0 | return rv; |
3682 | 0 | } |
3683 | 0 | return NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE; |
3684 | 0 | } |
3685 | 0 | } |
3686 | 0 | if (rv == 0) { |
3687 | 0 | rv = session_call_on_header(session, frame, &nv); |
3688 | | /* This handles NGHTTP2_ERR_PAUSE and |
3689 | | NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE as well */ |
3690 | 0 | if (rv != 0) { |
3691 | 0 | return rv; |
3692 | 0 | } |
3693 | 0 | } |
3694 | 0 | } |
3695 | 0 | } |
3696 | 0 | if (inflate_flags & NGHTTP2_HD_INFLATE_FINAL) { |
3697 | 0 | nghttp2_hd_inflate_end_headers(&session->hd_inflater); |
3698 | 0 | break; |
3699 | 0 | } |
3700 | 0 | if ((inflate_flags & NGHTTP2_HD_INFLATE_EMIT) == 0 && inlen == 0) { |
3701 | 0 | break; |
3702 | 0 | } |
3703 | 0 | } |
3704 | 0 | return 0; |
3705 | 0 | } |
3706 | | |
3707 | | /* |
3708 | | * Call this function when HEADERS frame was completely received. |
3709 | | * |
3710 | | * This function returns 0 if it succeeds, or one of negative error |
3711 | | * codes: |
3712 | | * |
3713 | | * NGHTTP2_ERR_CALLBACK_FAILURE |
3714 | | * The callback function failed. |
3715 | | * NGHTTP2_ERR_NOMEM |
3716 | | * Out of memory. |
3717 | | */ |
3718 | | static int session_end_stream_headers_received(nghttp2_session *session, |
3719 | | nghttp2_frame *frame, |
3720 | 0 | nghttp2_stream *stream) { |
3721 | 0 | int rv; |
3722 | 0 | if ((frame->hd.flags & NGHTTP2_FLAG_END_STREAM) == 0) { |
3723 | 0 | return 0; |
3724 | 0 | } |
3725 | | |
3726 | 0 | nghttp2_stream_shutdown(stream, NGHTTP2_SHUT_RD); |
3727 | 0 | rv = nghttp2_session_close_stream_if_shut_rdwr(session, stream); |
3728 | 0 | if (nghttp2_is_fatal(rv)) { |
3729 | 0 | return rv; |
3730 | 0 | } |
3731 | | |
3732 | 0 | return 0; |
3733 | 0 | } |
3734 | | |
3735 | 0 | static int session_after_header_block_received(nghttp2_session *session) { |
3736 | 0 | int rv = 0; |
3737 | 0 | nghttp2_frame *frame = &session->iframe.frame; |
3738 | 0 | nghttp2_stream *stream; |
3739 | | |
3740 | | /* We don't call on_frame_recv_callback if stream has been closed |
3741 | | already or being closed. */ |
3742 | 0 | stream = nghttp2_session_get_stream(session, frame->hd.stream_id); |
3743 | 0 | if (!stream || stream->state == NGHTTP2_STREAM_CLOSING) { |
3744 | 0 | return 0; |
3745 | 0 | } |
3746 | | |
3747 | 0 | if (session_enforce_http_messaging(session)) { |
3748 | 0 | if (frame->hd.type == NGHTTP2_PUSH_PROMISE) { |
3749 | 0 | nghttp2_stream *subject_stream; |
3750 | |
|
3751 | 0 | subject_stream = nghttp2_session_get_stream( |
3752 | 0 | session, frame->push_promise.promised_stream_id); |
3753 | 0 | if (subject_stream) { |
3754 | 0 | rv = nghttp2_http_on_request_headers(subject_stream, frame); |
3755 | 0 | } |
3756 | 0 | } else { |
3757 | 0 | assert(frame->hd.type == NGHTTP2_HEADERS); |
3758 | 0 | switch (frame->headers.cat) { |
3759 | 0 | case NGHTTP2_HCAT_REQUEST: |
3760 | 0 | rv = nghttp2_http_on_request_headers(stream, frame); |
3761 | 0 | break; |
3762 | 0 | case NGHTTP2_HCAT_RESPONSE: |
3763 | 0 | case NGHTTP2_HCAT_PUSH_RESPONSE: |
3764 | 0 | rv = nghttp2_http_on_response_headers(stream); |
3765 | 0 | break; |
3766 | 0 | case NGHTTP2_HCAT_HEADERS: |
3767 | 0 | if (stream->http_flags & NGHTTP2_HTTP_FLAG_EXPECT_FINAL_RESPONSE) { |
3768 | 0 | assert(!session->server); |
3769 | 0 | rv = nghttp2_http_on_response_headers(stream); |
3770 | 0 | } else { |
3771 | 0 | rv = nghttp2_http_on_trailer_headers(stream, frame); |
3772 | 0 | } |
3773 | 0 | break; |
3774 | 0 | default: |
3775 | 0 | assert(0); |
3776 | 0 | } |
3777 | 0 | if (rv == 0 && (frame->hd.flags & NGHTTP2_FLAG_END_STREAM)) { |
3778 | 0 | rv = nghttp2_http_on_remote_end_stream(stream); |
3779 | 0 | } |
3780 | 0 | } |
3781 | 0 | if (rv != 0) { |
3782 | 0 | int32_t stream_id; |
3783 | |
|
3784 | 0 | if (frame->hd.type == NGHTTP2_PUSH_PROMISE) { |
3785 | 0 | stream_id = frame->push_promise.promised_stream_id; |
3786 | 0 | } else { |
3787 | 0 | stream_id = frame->hd.stream_id; |
3788 | 0 | } |
3789 | |
|
3790 | 0 | rv = session_handle_invalid_stream2(session, stream_id, frame, |
3791 | 0 | NGHTTP2_ERR_HTTP_MESSAGING); |
3792 | 0 | if (nghttp2_is_fatal(rv)) { |
3793 | 0 | return rv; |
3794 | 0 | } |
3795 | | |
3796 | 0 | if (frame->hd.type == NGHTTP2_HEADERS && |
3797 | 0 | (frame->hd.flags & NGHTTP2_FLAG_END_STREAM)) { |
3798 | 0 | nghttp2_stream_shutdown(stream, NGHTTP2_SHUT_RD); |
3799 | | /* Don't call nghttp2_session_close_stream_if_shut_rdwr |
3800 | | because RST_STREAM has been submitted. */ |
3801 | 0 | } |
3802 | 0 | return 0; |
3803 | 0 | } |
3804 | 0 | } |
3805 | | |
3806 | 0 | rv = session_call_on_frame_received(session, frame); |
3807 | 0 | if (nghttp2_is_fatal(rv)) { |
3808 | 0 | return rv; |
3809 | 0 | } |
3810 | | |
3811 | 0 | if (frame->hd.type != NGHTTP2_HEADERS) { |
3812 | 0 | return 0; |
3813 | 0 | } |
3814 | | |
3815 | 0 | return session_end_stream_headers_received(session, frame, stream); |
3816 | 0 | } |
3817 | | |
3818 | | int nghttp2_session_on_request_headers_received(nghttp2_session *session, |
3819 | 0 | nghttp2_frame *frame) { |
3820 | 0 | int rv = 0; |
3821 | 0 | nghttp2_stream *stream; |
3822 | 0 | if (frame->hd.stream_id == 0) { |
3823 | 0 | return session_inflate_handle_invalid_connection( |
3824 | 0 | session, frame, NGHTTP2_ERR_PROTO, "request HEADERS: stream_id == 0"); |
3825 | 0 | } |
3826 | | |
3827 | | /* If client receives idle stream from server, it is invalid |
3828 | | regardless stream ID is even or odd. This is because client is |
3829 | | not expected to receive request from server. */ |
3830 | 0 | if (!session->server) { |
3831 | 0 | if (session_detect_idle_stream(session, frame->hd.stream_id)) { |
3832 | 0 | return session_inflate_handle_invalid_connection( |
3833 | 0 | session, frame, NGHTTP2_ERR_PROTO, |
3834 | 0 | "request HEADERS: client received request"); |
3835 | 0 | } |
3836 | | |
3837 | 0 | return NGHTTP2_ERR_IGN_HEADER_BLOCK; |
3838 | 0 | } |
3839 | | |
3840 | 0 | assert(session->server); |
3841 | | |
3842 | 0 | if (!session_is_new_peer_stream_id(session, frame->hd.stream_id)) { |
3843 | 0 | if (frame->hd.stream_id == 0 || |
3844 | 0 | nghttp2_session_is_my_stream_id(session, frame->hd.stream_id)) { |
3845 | 0 | return session_inflate_handle_invalid_connection( |
3846 | 0 | session, frame, NGHTTP2_ERR_PROTO, |
3847 | 0 | "request HEADERS: invalid stream_id"); |
3848 | 0 | } |
3849 | | |
3850 | | /* RFC 7540 says if an endpoint receives a HEADERS with invalid |
3851 | | * stream ID (e.g, numerically smaller than previous), it MUST |
3852 | | * issue connection error with error code PROTOCOL_ERROR. It is a |
3853 | | * bit hard to detect this, since we cannot remember all streams |
3854 | | * we observed so far. |
3855 | | * |
3856 | | * You might imagine this is really easy. But no. HTTP/2 is |
3857 | | * asynchronous protocol, and usually client and server do not |
3858 | | * share the complete picture of open/closed stream status. For |
3859 | | * example, after server sends RST_STREAM for a stream, client may |
3860 | | * send trailer HEADERS for that stream. If naive server detects |
3861 | | * that, and issued connection error, then it is a bug of server |
3862 | | * implementation since client is not wrong if it did not get |
3863 | | * RST_STREAM when it issued trailer HEADERS. |
3864 | | * |
3865 | | * At the moment, we are very conservative here. We only use |
3866 | | * connection error if stream ID refers idle stream, or we are |
3867 | | * sure that stream is half-closed(remote) or closed. Otherwise |
3868 | | * we just ignore HEADERS for now. |
3869 | | */ |
3870 | 0 | stream = nghttp2_session_get_stream_raw(session, frame->hd.stream_id); |
3871 | 0 | if (stream && (stream->shut_flags & NGHTTP2_SHUT_RD)) { |
3872 | 0 | return session_inflate_handle_invalid_connection( |
3873 | 0 | session, frame, NGHTTP2_ERR_STREAM_CLOSED, "HEADERS: stream closed"); |
3874 | 0 | } |
3875 | | |
3876 | 0 | return NGHTTP2_ERR_IGN_HEADER_BLOCK; |
3877 | 0 | } |
3878 | 0 | session->last_recv_stream_id = frame->hd.stream_id; |
3879 | |
|
3880 | 0 | if (session_is_incoming_concurrent_streams_max(session)) { |
3881 | 0 | return session_inflate_handle_invalid_connection( |
3882 | 0 | session, frame, NGHTTP2_ERR_PROTO, |
3883 | 0 | "request HEADERS: max concurrent streams exceeded"); |
3884 | 0 | } |
3885 | | |
3886 | 0 | if (!session_allow_incoming_new_stream(session)) { |
3887 | | /* We just ignore stream after GOAWAY was sent */ |
3888 | 0 | return NGHTTP2_ERR_IGN_HEADER_BLOCK; |
3889 | 0 | } |
3890 | | |
3891 | 0 | if (frame->headers.pri_spec.stream_id == frame->hd.stream_id) { |
3892 | 0 | return session_inflate_handle_invalid_connection( |
3893 | 0 | session, frame, NGHTTP2_ERR_PROTO, "request HEADERS: depend on itself"); |
3894 | 0 | } |
3895 | | |
3896 | 0 | if (session_is_incoming_concurrent_streams_pending_max(session)) { |
3897 | 0 | return session_inflate_handle_invalid_stream(session, frame, |
3898 | 0 | NGHTTP2_ERR_REFUSED_STREAM); |
3899 | 0 | } |
3900 | | |
3901 | 0 | stream = nghttp2_session_open_stream( |
3902 | 0 | session, frame->hd.stream_id, NGHTTP2_STREAM_FLAG_NONE, |
3903 | 0 | &frame->headers.pri_spec, NGHTTP2_STREAM_OPENING, NULL); |
3904 | 0 | if (!stream) { |
3905 | 0 | return NGHTTP2_ERR_NOMEM; |
3906 | 0 | } |
3907 | | |
3908 | 0 | rv = nghttp2_session_adjust_closed_stream(session); |
3909 | 0 | if (nghttp2_is_fatal(rv)) { |
3910 | 0 | return rv; |
3911 | 0 | } |
3912 | | |
3913 | 0 | session->last_proc_stream_id = session->last_recv_stream_id; |
3914 | |
|
3915 | 0 | rv = session_call_on_begin_headers(session, frame); |
3916 | 0 | if (rv != 0) { |
3917 | 0 | return rv; |
3918 | 0 | } |
3919 | 0 | return 0; |
3920 | 0 | } |
3921 | | |
3922 | | int nghttp2_session_on_response_headers_received(nghttp2_session *session, |
3923 | | nghttp2_frame *frame, |
3924 | 0 | nghttp2_stream *stream) { |
3925 | 0 | int rv; |
3926 | | /* This function is only called if stream->state == |
3927 | | NGHTTP2_STREAM_OPENING and stream_id is local side initiated. */ |
3928 | 0 | assert(stream->state == NGHTTP2_STREAM_OPENING && |
3929 | 0 | nghttp2_session_is_my_stream_id(session, frame->hd.stream_id)); |
3930 | 0 | if (frame->hd.stream_id == 0) { |
3931 | 0 | return session_inflate_handle_invalid_connection( |
3932 | 0 | session, frame, NGHTTP2_ERR_PROTO, "response HEADERS: stream_id == 0"); |
3933 | 0 | } |
3934 | 0 | if (stream->shut_flags & NGHTTP2_SHUT_RD) { |
3935 | | /* half closed (remote): from the spec: |
3936 | | |
3937 | | If an endpoint receives additional frames for a stream that is |
3938 | | in this state it MUST respond with a stream error (Section |
3939 | | 5.4.2) of type STREAM_CLOSED. |
3940 | | |
3941 | | We go further, and make it connection error. |
3942 | | */ |
3943 | 0 | return session_inflate_handle_invalid_connection( |
3944 | 0 | session, frame, NGHTTP2_ERR_STREAM_CLOSED, "HEADERS: stream closed"); |
3945 | 0 | } |
3946 | 0 | stream->state = NGHTTP2_STREAM_OPENED; |
3947 | 0 | rv = session_call_on_begin_headers(session, frame); |
3948 | 0 | if (rv != 0) { |
3949 | 0 | return rv; |
3950 | 0 | } |
3951 | 0 | return 0; |
3952 | 0 | } |
3953 | | |
3954 | | int nghttp2_session_on_push_response_headers_received(nghttp2_session *session, |
3955 | | nghttp2_frame *frame, |
3956 | 0 | nghttp2_stream *stream) { |
3957 | 0 | int rv = 0; |
3958 | 0 | assert(stream->state == NGHTTP2_STREAM_RESERVED); |
3959 | 0 | if (frame->hd.stream_id == 0) { |
3960 | 0 | return session_inflate_handle_invalid_connection( |
3961 | 0 | session, frame, NGHTTP2_ERR_PROTO, |
3962 | 0 | "push response HEADERS: stream_id == 0"); |
3963 | 0 | } |
3964 | | |
3965 | 0 | if (session->server) { |
3966 | 0 | return session_inflate_handle_invalid_connection( |
3967 | 0 | session, frame, NGHTTP2_ERR_PROTO, |
3968 | 0 | "HEADERS: no HEADERS allowed from client in reserved state"); |
3969 | 0 | } |
3970 | | |
3971 | 0 | if (session_is_incoming_concurrent_streams_max(session)) { |
3972 | 0 | return session_inflate_handle_invalid_connection( |
3973 | 0 | session, frame, NGHTTP2_ERR_PROTO, |
3974 | 0 | "push response HEADERS: max concurrent streams exceeded"); |
3975 | 0 | } |
3976 | | |
3977 | 0 | if (!session_allow_incoming_new_stream(session)) { |
3978 | | /* We don't accept new stream after GOAWAY was sent. */ |
3979 | 0 | return NGHTTP2_ERR_IGN_HEADER_BLOCK; |
3980 | 0 | } |
3981 | | |
3982 | 0 | if (session_is_incoming_concurrent_streams_pending_max(session)) { |
3983 | 0 | return session_inflate_handle_invalid_stream(session, frame, |
3984 | 0 | NGHTTP2_ERR_REFUSED_STREAM); |
3985 | 0 | } |
3986 | | |
3987 | 0 | nghttp2_stream_promise_fulfilled(stream); |
3988 | 0 | if (!nghttp2_session_is_my_stream_id(session, stream->stream_id)) { |
3989 | 0 | --session->num_incoming_reserved_streams; |
3990 | 0 | } |
3991 | 0 | ++session->num_incoming_streams; |
3992 | 0 | rv = session_call_on_begin_headers(session, frame); |
3993 | 0 | if (rv != 0) { |
3994 | 0 | return rv; |
3995 | 0 | } |
3996 | 0 | return 0; |
3997 | 0 | } |
3998 | | |
3999 | | int nghttp2_session_on_headers_received(nghttp2_session *session, |
4000 | | nghttp2_frame *frame, |
4001 | 0 | nghttp2_stream *stream) { |
4002 | 0 | int rv = 0; |
4003 | 0 | if (frame->hd.stream_id == 0) { |
4004 | 0 | return session_inflate_handle_invalid_connection( |
4005 | 0 | session, frame, NGHTTP2_ERR_PROTO, "HEADERS: stream_id == 0"); |
4006 | 0 | } |
4007 | 0 | if ((stream->shut_flags & NGHTTP2_SHUT_RD)) { |
4008 | | /* half closed (remote): from the spec: |
4009 | | |
4010 | | If an endpoint receives additional frames for a stream that is |
4011 | | in this state it MUST respond with a stream error (Section |
4012 | | 5.4.2) of type STREAM_CLOSED. |
4013 | | |
4014 | | we go further, and make it connection error. |
4015 | | */ |
4016 | 0 | return session_inflate_handle_invalid_connection( |
4017 | 0 | session, frame, NGHTTP2_ERR_STREAM_CLOSED, "HEADERS: stream closed"); |
4018 | 0 | } |
4019 | 0 | if (nghttp2_session_is_my_stream_id(session, frame->hd.stream_id)) { |
4020 | 0 | if (stream->state == NGHTTP2_STREAM_OPENED) { |
4021 | 0 | rv = session_call_on_begin_headers(session, frame); |
4022 | 0 | if (rv != 0) { |
4023 | 0 | return rv; |
4024 | 0 | } |
4025 | 0 | return 0; |
4026 | 0 | } |
4027 | | |
4028 | 0 | return NGHTTP2_ERR_IGN_HEADER_BLOCK; |
4029 | 0 | } |
4030 | | /* If this is remote peer initiated stream, it is OK unless it |
4031 | | has sent END_STREAM frame already. But if stream is in |
4032 | | NGHTTP2_STREAM_CLOSING, we discard the frame. This is a race |
4033 | | condition. */ |
4034 | 0 | if (stream->state != NGHTTP2_STREAM_CLOSING) { |
4035 | 0 | rv = session_call_on_begin_headers(session, frame); |
4036 | 0 | if (rv != 0) { |
4037 | 0 | return rv; |
4038 | 0 | } |
4039 | 0 | return 0; |
4040 | 0 | } |
4041 | 0 | return NGHTTP2_ERR_IGN_HEADER_BLOCK; |
4042 | 0 | } |
4043 | | |
4044 | 0 | static int session_process_headers_frame(nghttp2_session *session) { |
4045 | 0 | int rv; |
4046 | 0 | nghttp2_inbound_frame *iframe = &session->iframe; |
4047 | 0 | nghttp2_frame *frame = &iframe->frame; |
4048 | 0 | nghttp2_stream *stream; |
4049 | |
|
4050 | 0 | rv = nghttp2_frame_unpack_headers_payload(&frame->headers, iframe->sbuf.pos); |
4051 | |
|
4052 | 0 | if (rv != 0) { |
4053 | 0 | return nghttp2_session_terminate_session_with_reason( |
4054 | 0 | session, NGHTTP2_PROTOCOL_ERROR, "HEADERS: could not unpack"); |
4055 | 0 | } |
4056 | 0 | stream = nghttp2_session_get_stream(session, frame->hd.stream_id); |
4057 | 0 | if (!stream) { |
4058 | 0 | frame->headers.cat = NGHTTP2_HCAT_REQUEST; |
4059 | 0 | return nghttp2_session_on_request_headers_received(session, frame); |
4060 | 0 | } |
4061 | | |
4062 | 0 | if (stream->state == NGHTTP2_STREAM_RESERVED) { |
4063 | 0 | frame->headers.cat = NGHTTP2_HCAT_PUSH_RESPONSE; |
4064 | 0 | return nghttp2_session_on_push_response_headers_received(session, frame, |
4065 | 0 | stream); |
4066 | 0 | } |
4067 | | |
4068 | 0 | if (stream->state == NGHTTP2_STREAM_OPENING && |
4069 | 0 | nghttp2_session_is_my_stream_id(session, frame->hd.stream_id)) { |
4070 | 0 | frame->headers.cat = NGHTTP2_HCAT_RESPONSE; |
4071 | 0 | return nghttp2_session_on_response_headers_received(session, frame, stream); |
4072 | 0 | } |
4073 | | |
4074 | 0 | frame->headers.cat = NGHTTP2_HCAT_HEADERS; |
4075 | 0 | return nghttp2_session_on_headers_received(session, frame, stream); |
4076 | 0 | } |
4077 | | |
4078 | | int nghttp2_session_on_priority_received(nghttp2_session *session, |
4079 | 0 | nghttp2_frame *frame) { |
4080 | 0 | int rv; |
4081 | 0 | nghttp2_stream *stream; |
4082 | |
|
4083 | 0 | if (frame->hd.stream_id == 0) { |
4084 | 0 | return session_handle_invalid_connection(session, frame, NGHTTP2_ERR_PROTO, |
4085 | 0 | "PRIORITY: stream_id == 0"); |
4086 | 0 | } |
4087 | | |
4088 | 0 | if (frame->priority.pri_spec.stream_id == frame->hd.stream_id) { |
4089 | 0 | return nghttp2_session_terminate_session_with_reason( |
4090 | 0 | session, NGHTTP2_PROTOCOL_ERROR, "depend on itself"); |
4091 | 0 | } |
4092 | | |
4093 | 0 | if (!session->server) { |
4094 | | /* Re-prioritization works only in server */ |
4095 | 0 | return session_call_on_frame_received(session, frame); |
4096 | 0 | } |
4097 | | |
4098 | 0 | stream = nghttp2_session_get_stream_raw(session, frame->hd.stream_id); |
4099 | |
|
4100 | 0 | if (!stream) { |
4101 | | /* PRIORITY against idle stream can create anchor node in |
4102 | | dependency tree. */ |
4103 | 0 | if (!session_detect_idle_stream(session, frame->hd.stream_id)) { |
4104 | 0 | return 0; |
4105 | 0 | } |
4106 | | |
4107 | 0 | stream = nghttp2_session_open_stream( |
4108 | 0 | session, frame->hd.stream_id, NGHTTP2_STREAM_FLAG_NONE, |
4109 | 0 | &frame->priority.pri_spec, NGHTTP2_STREAM_IDLE, NULL); |
4110 | |
|
4111 | 0 | if (stream == NULL) { |
4112 | 0 | return NGHTTP2_ERR_NOMEM; |
4113 | 0 | } |
4114 | | |
4115 | 0 | rv = nghttp2_session_adjust_idle_stream(session); |
4116 | 0 | if (nghttp2_is_fatal(rv)) { |
4117 | 0 | return rv; |
4118 | 0 | } |
4119 | 0 | } else { |
4120 | 0 | rv = nghttp2_session_reprioritize_stream(session, stream, |
4121 | 0 | &frame->priority.pri_spec); |
4122 | |
|
4123 | 0 | if (nghttp2_is_fatal(rv)) { |
4124 | 0 | return rv; |
4125 | 0 | } |
4126 | | |
4127 | 0 | rv = nghttp2_session_adjust_idle_stream(session); |
4128 | 0 | if (nghttp2_is_fatal(rv)) { |
4129 | 0 | return rv; |
4130 | 0 | } |
4131 | 0 | } |
4132 | | |
4133 | 0 | return session_call_on_frame_received(session, frame); |
4134 | 0 | } |
4135 | | |
4136 | 0 | static int session_process_priority_frame(nghttp2_session *session) { |
4137 | 0 | nghttp2_inbound_frame *iframe = &session->iframe; |
4138 | 0 | nghttp2_frame *frame = &iframe->frame; |
4139 | |
|
4140 | 0 | nghttp2_frame_unpack_priority_payload(&frame->priority, iframe->sbuf.pos); |
4141 | |
|
4142 | 0 | return nghttp2_session_on_priority_received(session, frame); |
4143 | 0 | } |
4144 | | |
4145 | | int nghttp2_session_on_rst_stream_received(nghttp2_session *session, |
4146 | 0 | nghttp2_frame *frame) { |
4147 | 0 | int rv; |
4148 | 0 | nghttp2_stream *stream; |
4149 | 0 | if (frame->hd.stream_id == 0) { |
4150 | 0 | return session_handle_invalid_connection(session, frame, NGHTTP2_ERR_PROTO, |
4151 | 0 | "RST_STREAM: stream_id == 0"); |
4152 | 0 | } |
4153 | | |
4154 | 0 | if (session_detect_idle_stream(session, frame->hd.stream_id)) { |
4155 | 0 | return session_handle_invalid_connection(session, frame, NGHTTP2_ERR_PROTO, |
4156 | 0 | "RST_STREAM: stream in idle"); |
4157 | 0 | } |
4158 | | |
4159 | 0 | stream = nghttp2_session_get_stream(session, frame->hd.stream_id); |
4160 | 0 | if (stream) { |
4161 | | /* We may use stream->shut_flags for strict error checking. */ |
4162 | 0 | nghttp2_stream_shutdown(stream, NGHTTP2_SHUT_RD); |
4163 | 0 | } |
4164 | |
|
4165 | 0 | rv = session_call_on_frame_received(session, frame); |
4166 | 0 | if (rv != 0) { |
4167 | 0 | return rv; |
4168 | 0 | } |
4169 | 0 | rv = nghttp2_session_close_stream(session, frame->hd.stream_id, |
4170 | 0 | frame->rst_stream.error_code); |
4171 | 0 | if (nghttp2_is_fatal(rv)) { |
4172 | 0 | return rv; |
4173 | 0 | } |
4174 | 0 | return 0; |
4175 | 0 | } |
4176 | | |
4177 | 0 | static int session_process_rst_stream_frame(nghttp2_session *session) { |
4178 | 0 | nghttp2_inbound_frame *iframe = &session->iframe; |
4179 | 0 | nghttp2_frame *frame = &iframe->frame; |
4180 | |
|
4181 | 0 | nghttp2_frame_unpack_rst_stream_payload(&frame->rst_stream, iframe->sbuf.pos); |
4182 | |
|
4183 | 0 | return nghttp2_session_on_rst_stream_received(session, frame); |
4184 | 0 | } |
4185 | | |
4186 | | static int update_remote_initial_window_size_func(nghttp2_map_entry *entry, |
4187 | 0 | void *ptr) { |
4188 | 0 | int rv; |
4189 | 0 | nghttp2_update_window_size_arg *arg; |
4190 | 0 | nghttp2_stream *stream; |
4191 | |
|
4192 | 0 | arg = (nghttp2_update_window_size_arg *)ptr; |
4193 | 0 | stream = (nghttp2_stream *)entry; |
4194 | |
|
4195 | 0 | rv = nghttp2_stream_update_remote_initial_window_size( |
4196 | 0 | stream, arg->new_window_size, arg->old_window_size); |
4197 | 0 | if (rv != 0) { |
4198 | 0 | return nghttp2_session_add_rst_stream(arg->session, stream->stream_id, |
4199 | 0 | NGHTTP2_FLOW_CONTROL_ERROR); |
4200 | 0 | } |
4201 | | |
4202 | | /* If window size gets positive, push deferred DATA frame to |
4203 | | outbound queue. */ |
4204 | 0 | if (stream->remote_window_size > 0 && |
4205 | 0 | nghttp2_stream_check_deferred_by_flow_control(stream)) { |
4206 | |
|
4207 | 0 | rv = nghttp2_stream_resume_deferred_item( |
4208 | 0 | stream, NGHTTP2_STREAM_FLAG_DEFERRED_FLOW_CONTROL); |
4209 | |
|
4210 | 0 | if (nghttp2_is_fatal(rv)) { |
4211 | 0 | return rv; |
4212 | 0 | } |
4213 | 0 | } |
4214 | 0 | return 0; |
4215 | 0 | } |
4216 | | |
4217 | | /* |
4218 | | * Updates the remote initial window size of all active streams. If |
4219 | | * error occurs, all streams may not be updated. |
4220 | | * |
4221 | | * This function returns 0 if it succeeds, or one of the following |
4222 | | * negative error codes: |
4223 | | * |
4224 | | * NGHTTP2_ERR_NOMEM |
4225 | | * Out of memory. |
4226 | | */ |
4227 | | static int |
4228 | | session_update_remote_initial_window_size(nghttp2_session *session, |
4229 | 0 | int32_t new_initial_window_size) { |
4230 | 0 | nghttp2_update_window_size_arg arg; |
4231 | |
|
4232 | 0 | arg.session = session; |
4233 | 0 | arg.new_window_size = new_initial_window_size; |
4234 | 0 | arg.old_window_size = (int32_t)session->remote_settings.initial_window_size; |
4235 | |
|
4236 | 0 | return nghttp2_map_each(&session->streams, |
4237 | 0 | update_remote_initial_window_size_func, &arg); |
4238 | 0 | } |
4239 | | |
4240 | | static int update_local_initial_window_size_func(nghttp2_map_entry *entry, |
4241 | 0 | void *ptr) { |
4242 | 0 | int rv; |
4243 | 0 | nghttp2_update_window_size_arg *arg; |
4244 | 0 | nghttp2_stream *stream; |
4245 | 0 | arg = (nghttp2_update_window_size_arg *)ptr; |
4246 | 0 | stream = (nghttp2_stream *)entry; |
4247 | 0 | rv = nghttp2_stream_update_local_initial_window_size( |
4248 | 0 | stream, arg->new_window_size, arg->old_window_size); |
4249 | 0 | if (rv != 0) { |
4250 | 0 | return nghttp2_session_add_rst_stream(arg->session, stream->stream_id, |
4251 | 0 | NGHTTP2_FLOW_CONTROL_ERROR); |
4252 | 0 | } |
4253 | 0 | if (!(arg->session->opt_flags & NGHTTP2_OPTMASK_NO_AUTO_WINDOW_UPDATE) && |
4254 | 0 | stream->window_update_queued == 0 && |
4255 | 0 | nghttp2_should_send_window_update(stream->local_window_size, |
4256 | 0 | stream->recv_window_size)) { |
4257 | |
|
4258 | 0 | rv = nghttp2_session_add_window_update(arg->session, NGHTTP2_FLAG_NONE, |
4259 | 0 | stream->stream_id, |
4260 | 0 | stream->recv_window_size); |
4261 | 0 | if (rv != 0) { |
4262 | 0 | return rv; |
4263 | 0 | } |
4264 | | |
4265 | 0 | stream->recv_window_size = 0; |
4266 | 0 | } |
4267 | 0 | return 0; |
4268 | 0 | } |
4269 | | |
4270 | | /* |
4271 | | * Updates the local initial window size of all active streams. If |
4272 | | * error occurs, all streams may not be updated. |
4273 | | * |
4274 | | * This function returns 0 if it succeeds, or one of the following |
4275 | | * negative error codes: |
4276 | | * |
4277 | | * NGHTTP2_ERR_NOMEM |
4278 | | * Out of memory. |
4279 | | */ |
4280 | | static int |
4281 | | session_update_local_initial_window_size(nghttp2_session *session, |
4282 | | int32_t new_initial_window_size, |
4283 | 0 | int32_t old_initial_window_size) { |
4284 | 0 | nghttp2_update_window_size_arg arg; |
4285 | 0 | arg.session = session; |
4286 | 0 | arg.new_window_size = new_initial_window_size; |
4287 | 0 | arg.old_window_size = old_initial_window_size; |
4288 | 0 | return nghttp2_map_each(&session->streams, |
4289 | 0 | update_local_initial_window_size_func, &arg); |
4290 | 0 | } |
4291 | | |
4292 | | /* |
4293 | | * Apply SETTINGS values |iv| having |niv| elements to the local |
4294 | | * settings. We assumes that all values in |iv| is correct, since we |
4295 | | * validated them in nghttp2_session_add_settings() already. |
4296 | | * |
4297 | | * This function returns 0 if it succeeds, or one of the following |
4298 | | * negative error codes: |
4299 | | * |
4300 | | * NGHTTP2_ERR_HEADER_COMP |
4301 | | * The header table size is out of range |
4302 | | * NGHTTP2_ERR_NOMEM |
4303 | | * Out of memory |
4304 | | */ |
4305 | | int nghttp2_session_update_local_settings(nghttp2_session *session, |
4306 | | nghttp2_settings_entry *iv, |
4307 | 0 | size_t niv) { |
4308 | 0 | int rv; |
4309 | 0 | size_t i; |
4310 | 0 | int32_t new_initial_window_size = -1; |
4311 | 0 | uint32_t header_table_size = 0; |
4312 | 0 | uint32_t min_header_table_size = UINT32_MAX; |
4313 | 0 | uint8_t header_table_size_seen = 0; |
4314 | | /* For NGHTTP2_SETTINGS_INITIAL_WINDOW_SIZE, use the value last |
4315 | | seen. For NGHTTP2_SETTINGS_HEADER_TABLE_SIZE, use both minimum |
4316 | | value and last seen value. */ |
4317 | 0 | for (i = 0; i < niv; ++i) { |
4318 | 0 | switch (iv[i].settings_id) { |
4319 | 0 | case NGHTTP2_SETTINGS_HEADER_TABLE_SIZE: |
4320 | 0 | header_table_size_seen = 1; |
4321 | 0 | header_table_size = iv[i].value; |
4322 | 0 | min_header_table_size = nghttp2_min(min_header_table_size, iv[i].value); |
4323 | 0 | break; |
4324 | 0 | case NGHTTP2_SETTINGS_INITIAL_WINDOW_SIZE: |
4325 | 0 | new_initial_window_size = (int32_t)iv[i].value; |
4326 | 0 | break; |
4327 | 0 | } |
4328 | 0 | } |
4329 | 0 | if (header_table_size_seen) { |
4330 | 0 | if (min_header_table_size < header_table_size) { |
4331 | 0 | rv = nghttp2_hd_inflate_change_table_size(&session->hd_inflater, |
4332 | 0 | min_header_table_size); |
4333 | 0 | if (rv != 0) { |
4334 | 0 | return rv; |
4335 | 0 | } |
4336 | 0 | } |
4337 | | |
4338 | 0 | rv = nghttp2_hd_inflate_change_table_size(&session->hd_inflater, |
4339 | 0 | header_table_size); |
4340 | 0 | if (rv != 0) { |
4341 | 0 | return rv; |
4342 | 0 | } |
4343 | 0 | } |
4344 | 0 | if (new_initial_window_size != -1) { |
4345 | 0 | rv = session_update_local_initial_window_size( |
4346 | 0 | session, new_initial_window_size, |
4347 | 0 | (int32_t)session->local_settings.initial_window_size); |
4348 | 0 | if (rv != 0) { |
4349 | 0 | return rv; |
4350 | 0 | } |
4351 | 0 | } |
4352 | | |
4353 | 0 | for (i = 0; i < niv; ++i) { |
4354 | 0 | switch (iv[i].settings_id) { |
4355 | 0 | case NGHTTP2_SETTINGS_HEADER_TABLE_SIZE: |
4356 | 0 | session->local_settings.header_table_size = iv[i].value; |
4357 | 0 | break; |
4358 | 0 | case NGHTTP2_SETTINGS_ENABLE_PUSH: |
4359 | 0 | session->local_settings.enable_push = iv[i].value; |
4360 | 0 | break; |
4361 | 0 | case NGHTTP2_SETTINGS_MAX_CONCURRENT_STREAMS: |
4362 | 0 | session->local_settings.max_concurrent_streams = iv[i].value; |
4363 | 0 | break; |
4364 | 0 | case NGHTTP2_SETTINGS_INITIAL_WINDOW_SIZE: |
4365 | 0 | session->local_settings.initial_window_size = iv[i].value; |
4366 | 0 | break; |
4367 | 0 | case NGHTTP2_SETTINGS_MAX_FRAME_SIZE: |
4368 | 0 | session->local_settings.max_frame_size = iv[i].value; |
4369 | 0 | break; |
4370 | 0 | case NGHTTP2_SETTINGS_MAX_HEADER_LIST_SIZE: |
4371 | 0 | session->local_settings.max_header_list_size = iv[i].value; |
4372 | 0 | break; |
4373 | 0 | case NGHTTP2_SETTINGS_ENABLE_CONNECT_PROTOCOL: |
4374 | 0 | session->local_settings.enable_connect_protocol = iv[i].value; |
4375 | 0 | break; |
4376 | 0 | } |
4377 | 0 | } |
4378 | | |
4379 | 0 | return 0; |
4380 | 0 | } |
4381 | | |
4382 | | int nghttp2_session_on_settings_received(nghttp2_session *session, |
4383 | 0 | nghttp2_frame *frame, int noack) { |
4384 | 0 | int rv; |
4385 | 0 | size_t i; |
4386 | 0 | nghttp2_mem *mem; |
4387 | 0 | nghttp2_inflight_settings *settings; |
4388 | |
|
4389 | 0 | mem = &session->mem; |
4390 | |
|
4391 | 0 | if (frame->hd.stream_id != 0) { |
4392 | 0 | return session_handle_invalid_connection(session, frame, NGHTTP2_ERR_PROTO, |
4393 | 0 | "SETTINGS: stream_id != 0"); |
4394 | 0 | } |
4395 | 0 | if (frame->hd.flags & NGHTTP2_FLAG_ACK) { |
4396 | 0 | if (frame->settings.niv != 0) { |
4397 | 0 | return session_handle_invalid_connection( |
4398 | 0 | session, frame, NGHTTP2_ERR_FRAME_SIZE_ERROR, |
4399 | 0 | "SETTINGS: ACK and payload != 0"); |
4400 | 0 | } |
4401 | | |
4402 | 0 | settings = session->inflight_settings_head; |
4403 | |
|
4404 | 0 | if (!settings) { |
4405 | 0 | return session_handle_invalid_connection( |
4406 | 0 | session, frame, NGHTTP2_ERR_PROTO, "SETTINGS: unexpected ACK"); |
4407 | 0 | } |
4408 | | |
4409 | 0 | rv = nghttp2_session_update_local_settings(session, settings->iv, |
4410 | 0 | settings->niv); |
4411 | |
|
4412 | 0 | session->inflight_settings_head = settings->next; |
4413 | |
|
4414 | 0 | inflight_settings_del(settings, mem); |
4415 | |
|
4416 | 0 | if (rv != 0) { |
4417 | 0 | if (nghttp2_is_fatal(rv)) { |
4418 | 0 | return rv; |
4419 | 0 | } |
4420 | 0 | return session_handle_invalid_connection(session, frame, rv, NULL); |
4421 | 0 | } |
4422 | 0 | return session_call_on_frame_received(session, frame); |
4423 | 0 | } |
4424 | | |
4425 | 0 | if (!session->remote_settings_received) { |
4426 | 0 | session->remote_settings.max_concurrent_streams = |
4427 | 0 | NGHTTP2_DEFAULT_MAX_CONCURRENT_STREAMS; |
4428 | 0 | session->remote_settings_received = 1; |
4429 | 0 | } |
4430 | |
|
4431 | 0 | for (i = 0; i < frame->settings.niv; ++i) { |
4432 | 0 | nghttp2_settings_entry *entry = &frame->settings.iv[i]; |
4433 | |
|
4434 | 0 | switch (entry->settings_id) { |
4435 | 0 | case NGHTTP2_SETTINGS_HEADER_TABLE_SIZE: |
4436 | |
|
4437 | 0 | rv = nghttp2_hd_deflate_change_table_size(&session->hd_deflater, |
4438 | 0 | entry->value); |
4439 | 0 | if (rv != 0) { |
4440 | 0 | if (nghttp2_is_fatal(rv)) { |
4441 | 0 | return rv; |
4442 | 0 | } else { |
4443 | 0 | return session_handle_invalid_connection( |
4444 | 0 | session, frame, NGHTTP2_ERR_HEADER_COMP, NULL); |
4445 | 0 | } |
4446 | 0 | } |
4447 | | |
4448 | 0 | session->remote_settings.header_table_size = entry->value; |
4449 | |
|
4450 | 0 | break; |
4451 | 0 | case NGHTTP2_SETTINGS_ENABLE_PUSH: |
4452 | |
|
4453 | 0 | if (entry->value != 0 && entry->value != 1) { |
4454 | 0 | return session_handle_invalid_connection( |
4455 | 0 | session, frame, NGHTTP2_ERR_PROTO, |
4456 | 0 | "SETTINGS: invalid SETTINGS_ENBLE_PUSH"); |
4457 | 0 | } |
4458 | | |
4459 | 0 | if (!session->server && entry->value != 0) { |
4460 | 0 | return session_handle_invalid_connection( |
4461 | 0 | session, frame, NGHTTP2_ERR_PROTO, |
4462 | 0 | "SETTINGS: server attempted to enable push"); |
4463 | 0 | } |
4464 | | |
4465 | 0 | session->remote_settings.enable_push = entry->value; |
4466 | |
|
4467 | 0 | break; |
4468 | 0 | case NGHTTP2_SETTINGS_MAX_CONCURRENT_STREAMS: |
4469 | |
|
4470 | 0 | session->remote_settings.max_concurrent_streams = entry->value; |
4471 | |
|
4472 | 0 | break; |
4473 | 0 | case NGHTTP2_SETTINGS_INITIAL_WINDOW_SIZE: |
4474 | | |
4475 | | /* Update the initial window size of the all active streams */ |
4476 | | /* Check that initial_window_size < (1u << 31) */ |
4477 | 0 | if (entry->value > NGHTTP2_MAX_WINDOW_SIZE) { |
4478 | 0 | return session_handle_invalid_connection( |
4479 | 0 | session, frame, NGHTTP2_ERR_FLOW_CONTROL, |
4480 | 0 | "SETTINGS: too large SETTINGS_INITIAL_WINDOW_SIZE"); |
4481 | 0 | } |
4482 | | |
4483 | 0 | rv = session_update_remote_initial_window_size(session, |
4484 | 0 | (int32_t)entry->value); |
4485 | |
|
4486 | 0 | if (nghttp2_is_fatal(rv)) { |
4487 | 0 | return rv; |
4488 | 0 | } |
4489 | | |
4490 | 0 | if (rv != 0) { |
4491 | 0 | return session_handle_invalid_connection( |
4492 | 0 | session, frame, NGHTTP2_ERR_FLOW_CONTROL, NULL); |
4493 | 0 | } |
4494 | | |
4495 | 0 | session->remote_settings.initial_window_size = entry->value; |
4496 | |
|
4497 | 0 | break; |
4498 | 0 | case NGHTTP2_SETTINGS_MAX_FRAME_SIZE: |
4499 | |
|
4500 | 0 | if (entry->value < NGHTTP2_MAX_FRAME_SIZE_MIN || |
4501 | 0 | entry->value > NGHTTP2_MAX_FRAME_SIZE_MAX) { |
4502 | 0 | return session_handle_invalid_connection( |
4503 | 0 | session, frame, NGHTTP2_ERR_PROTO, |
4504 | 0 | "SETTINGS: invalid SETTINGS_MAX_FRAME_SIZE"); |
4505 | 0 | } |
4506 | | |
4507 | 0 | session->remote_settings.max_frame_size = entry->value; |
4508 | |
|
4509 | 0 | break; |
4510 | 0 | case NGHTTP2_SETTINGS_MAX_HEADER_LIST_SIZE: |
4511 | |
|
4512 | 0 | session->remote_settings.max_header_list_size = entry->value; |
4513 | |
|
4514 | 0 | break; |
4515 | 0 | case NGHTTP2_SETTINGS_ENABLE_CONNECT_PROTOCOL: |
4516 | |
|
4517 | 0 | if (entry->value != 0 && entry->value != 1) { |
4518 | 0 | return session_handle_invalid_connection( |
4519 | 0 | session, frame, NGHTTP2_ERR_PROTO, |
4520 | 0 | "SETTINGS: invalid SETTINGS_ENABLE_CONNECT_PROTOCOL"); |
4521 | 0 | } |
4522 | | |
4523 | 0 | if (!session->server && |
4524 | 0 | session->remote_settings.enable_connect_protocol && |
4525 | 0 | entry->value == 0) { |
4526 | 0 | return session_handle_invalid_connection( |
4527 | 0 | session, frame, NGHTTP2_ERR_PROTO, |
4528 | 0 | "SETTINGS: server attempted to disable " |
4529 | 0 | "SETTINGS_ENABLE_CONNECT_PROTOCOL"); |
4530 | 0 | } |
4531 | | |
4532 | 0 | session->remote_settings.enable_connect_protocol = entry->value; |
4533 | |
|
4534 | 0 | break; |
4535 | 0 | } |
4536 | 0 | } |
4537 | | |
4538 | 0 | if (!noack && !session_is_closing(session)) { |
4539 | 0 | rv = nghttp2_session_add_settings(session, NGHTTP2_FLAG_ACK, NULL, 0); |
4540 | |
|
4541 | 0 | if (rv != 0) { |
4542 | 0 | if (nghttp2_is_fatal(rv)) { |
4543 | 0 | return rv; |
4544 | 0 | } |
4545 | | |
4546 | 0 | return session_handle_invalid_connection(session, frame, |
4547 | 0 | NGHTTP2_ERR_INTERNAL, NULL); |
4548 | 0 | } |
4549 | 0 | } |
4550 | | |
4551 | 0 | return session_call_on_frame_received(session, frame); |
4552 | 0 | } |
4553 | | |
4554 | 0 | static int session_process_settings_frame(nghttp2_session *session) { |
4555 | 0 | nghttp2_inbound_frame *iframe = &session->iframe; |
4556 | 0 | nghttp2_frame *frame = &iframe->frame; |
4557 | 0 | size_t i; |
4558 | 0 | nghttp2_settings_entry min_header_size_entry; |
4559 | |
|
4560 | 0 | if (iframe->max_niv) { |
4561 | 0 | min_header_size_entry = iframe->iv[iframe->max_niv - 1]; |
4562 | |
|
4563 | 0 | if (min_header_size_entry.value < UINT32_MAX) { |
4564 | | /* If we have less value, then we must have |
4565 | | SETTINGS_HEADER_TABLE_SIZE in i < iframe->niv */ |
4566 | 0 | for (i = 0; i < iframe->niv; ++i) { |
4567 | 0 | if (iframe->iv[i].settings_id == NGHTTP2_SETTINGS_HEADER_TABLE_SIZE) { |
4568 | 0 | break; |
4569 | 0 | } |
4570 | 0 | } |
4571 | |
|
4572 | 0 | assert(i < iframe->niv); |
4573 | | |
4574 | 0 | if (min_header_size_entry.value != iframe->iv[i].value) { |
4575 | 0 | iframe->iv[iframe->niv++] = iframe->iv[i]; |
4576 | 0 | iframe->iv[i] = min_header_size_entry; |
4577 | 0 | } |
4578 | 0 | } |
4579 | 0 | } |
4580 | | |
4581 | 0 | nghttp2_frame_unpack_settings_payload(&frame->settings, iframe->iv, |
4582 | 0 | iframe->niv); |
4583 | |
|
4584 | 0 | iframe->iv = NULL; |
4585 | 0 | iframe->niv = 0; |
4586 | 0 | iframe->max_niv = 0; |
4587 | |
|
4588 | 0 | return nghttp2_session_on_settings_received(session, frame, 0 /* ACK */); |
4589 | 0 | } |
4590 | | |
4591 | | int nghttp2_session_on_push_promise_received(nghttp2_session *session, |
4592 | 0 | nghttp2_frame *frame) { |
4593 | 0 | int rv; |
4594 | 0 | nghttp2_stream *stream; |
4595 | 0 | nghttp2_stream *promised_stream; |
4596 | 0 | nghttp2_priority_spec pri_spec; |
4597 | |
|
4598 | 0 | if (frame->hd.stream_id == 0) { |
4599 | 0 | return session_inflate_handle_invalid_connection( |
4600 | 0 | session, frame, NGHTTP2_ERR_PROTO, "PUSH_PROMISE: stream_id == 0"); |
4601 | 0 | } |
4602 | 0 | if (session->server || session->local_settings.enable_push == 0) { |
4603 | 0 | return session_inflate_handle_invalid_connection( |
4604 | 0 | session, frame, NGHTTP2_ERR_PROTO, "PUSH_PROMISE: push disabled"); |
4605 | 0 | } |
4606 | | |
4607 | 0 | if (!nghttp2_session_is_my_stream_id(session, frame->hd.stream_id)) { |
4608 | 0 | return session_inflate_handle_invalid_connection( |
4609 | 0 | session, frame, NGHTTP2_ERR_PROTO, "PUSH_PROMISE: invalid stream_id"); |
4610 | 0 | } |
4611 | | |
4612 | 0 | if (!session_allow_incoming_new_stream(session)) { |
4613 | | /* We just discard PUSH_PROMISE after GOAWAY was sent */ |
4614 | 0 | return NGHTTP2_ERR_IGN_HEADER_BLOCK; |
4615 | 0 | } |
4616 | | |
4617 | 0 | if (!session_is_new_peer_stream_id(session, |
4618 | 0 | frame->push_promise.promised_stream_id)) { |
4619 | | /* The spec says if an endpoint receives a PUSH_PROMISE with |
4620 | | illegal stream ID is subject to a connection error of type |
4621 | | PROTOCOL_ERROR. */ |
4622 | 0 | return session_inflate_handle_invalid_connection( |
4623 | 0 | session, frame, NGHTTP2_ERR_PROTO, |
4624 | 0 | "PUSH_PROMISE: invalid promised_stream_id"); |
4625 | 0 | } |
4626 | | |
4627 | 0 | if (session_detect_idle_stream(session, frame->hd.stream_id)) { |
4628 | 0 | return session_inflate_handle_invalid_connection( |
4629 | 0 | session, frame, NGHTTP2_ERR_PROTO, "PUSH_PROMISE: stream in idle"); |
4630 | 0 | } |
4631 | | |
4632 | 0 | session->last_recv_stream_id = frame->push_promise.promised_stream_id; |
4633 | 0 | stream = nghttp2_session_get_stream(session, frame->hd.stream_id); |
4634 | 0 | if (!stream || stream->state == NGHTTP2_STREAM_CLOSING || |
4635 | 0 | !session->pending_enable_push || |
4636 | 0 | session->num_incoming_reserved_streams >= |
4637 | 0 | session->max_incoming_reserved_streams) { |
4638 | | /* Currently, client does not retain closed stream, so we don't |
4639 | | check NGHTTP2_SHUT_RD condition here. */ |
4640 | |
|
4641 | 0 | rv = nghttp2_session_add_rst_stream( |
4642 | 0 | session, frame->push_promise.promised_stream_id, NGHTTP2_CANCEL); |
4643 | 0 | if (rv != 0) { |
4644 | 0 | return rv; |
4645 | 0 | } |
4646 | 0 | return NGHTTP2_ERR_IGN_HEADER_BLOCK; |
4647 | 0 | } |
4648 | | |
4649 | 0 | if (stream->shut_flags & NGHTTP2_SHUT_RD) { |
4650 | 0 | return session_inflate_handle_invalid_connection( |
4651 | 0 | session, frame, NGHTTP2_ERR_STREAM_CLOSED, |
4652 | 0 | "PUSH_PROMISE: stream closed"); |
4653 | 0 | } |
4654 | | |
4655 | 0 | nghttp2_priority_spec_init(&pri_spec, stream->stream_id, |
4656 | 0 | NGHTTP2_DEFAULT_WEIGHT, 0); |
4657 | |
|
4658 | 0 | promised_stream = nghttp2_session_open_stream( |
4659 | 0 | session, frame->push_promise.promised_stream_id, NGHTTP2_STREAM_FLAG_NONE, |
4660 | 0 | &pri_spec, NGHTTP2_STREAM_RESERVED, NULL); |
4661 | |
|
4662 | 0 | if (!promised_stream) { |
4663 | 0 | return NGHTTP2_ERR_NOMEM; |
4664 | 0 | } |
4665 | | |
4666 | | /* We don't call nghttp2_session_adjust_closed_stream(), since we |
4667 | | don't keep closed stream in client side */ |
4668 | | |
4669 | 0 | session->last_proc_stream_id = session->last_recv_stream_id; |
4670 | 0 | rv = session_call_on_begin_headers(session, frame); |
4671 | 0 | if (rv != 0) { |
4672 | 0 | return rv; |
4673 | 0 | } |
4674 | 0 | return 0; |
4675 | 0 | } |
4676 | | |
4677 | 0 | static int session_process_push_promise_frame(nghttp2_session *session) { |
4678 | 0 | int rv; |
4679 | 0 | nghttp2_inbound_frame *iframe = &session->iframe; |
4680 | 0 | nghttp2_frame *frame = &iframe->frame; |
4681 | |
|
4682 | 0 | rv = nghttp2_frame_unpack_push_promise_payload(&frame->push_promise, |
4683 | 0 | iframe->sbuf.pos); |
4684 | |
|
4685 | 0 | if (rv != 0) { |
4686 | 0 | return nghttp2_session_terminate_session_with_reason( |
4687 | 0 | session, NGHTTP2_PROTOCOL_ERROR, "PUSH_PROMISE: could not unpack"); |
4688 | 0 | } |
4689 | | |
4690 | 0 | return nghttp2_session_on_push_promise_received(session, frame); |
4691 | 0 | } |
4692 | | |
4693 | | int nghttp2_session_on_ping_received(nghttp2_session *session, |
4694 | 0 | nghttp2_frame *frame) { |
4695 | 0 | int rv = 0; |
4696 | 0 | if (frame->hd.stream_id != 0) { |
4697 | 0 | return session_handle_invalid_connection(session, frame, NGHTTP2_ERR_PROTO, |
4698 | 0 | "PING: stream_id != 0"); |
4699 | 0 | } |
4700 | 0 | if ((session->opt_flags & NGHTTP2_OPTMASK_NO_AUTO_PING_ACK) == 0 && |
4701 | 0 | (frame->hd.flags & NGHTTP2_FLAG_ACK) == 0 && |
4702 | 0 | !session_is_closing(session)) { |
4703 | | /* Peer sent ping, so ping it back */ |
4704 | 0 | rv = nghttp2_session_add_ping(session, NGHTTP2_FLAG_ACK, |
4705 | 0 | frame->ping.opaque_data); |
4706 | 0 | if (rv != 0) { |
4707 | 0 | return rv; |
4708 | 0 | } |
4709 | 0 | } |
4710 | 0 | return session_call_on_frame_received(session, frame); |
4711 | 0 | } |
4712 | | |
4713 | 0 | static int session_process_ping_frame(nghttp2_session *session) { |
4714 | 0 | nghttp2_inbound_frame *iframe = &session->iframe; |
4715 | 0 | nghttp2_frame *frame = &iframe->frame; |
4716 | |
|
4717 | 0 | nghttp2_frame_unpack_ping_payload(&frame->ping, iframe->sbuf.pos); |
4718 | |
|
4719 | 0 | return nghttp2_session_on_ping_received(session, frame); |
4720 | 0 | } |
4721 | | |
4722 | | int nghttp2_session_on_goaway_received(nghttp2_session *session, |
4723 | 0 | nghttp2_frame *frame) { |
4724 | 0 | int rv; |
4725 | |
|
4726 | 0 | if (frame->hd.stream_id != 0) { |
4727 | 0 | return session_handle_invalid_connection(session, frame, NGHTTP2_ERR_PROTO, |
4728 | 0 | "GOAWAY: stream_id != 0"); |
4729 | 0 | } |
4730 | | /* Spec says Endpoints MUST NOT increase the value they send in the |
4731 | | last stream identifier. */ |
4732 | 0 | if ((frame->goaway.last_stream_id > 0 && |
4733 | 0 | !nghttp2_session_is_my_stream_id(session, |
4734 | 0 | frame->goaway.last_stream_id)) || |
4735 | 0 | session->remote_last_stream_id < frame->goaway.last_stream_id) { |
4736 | 0 | return session_handle_invalid_connection(session, frame, NGHTTP2_ERR_PROTO, |
4737 | 0 | "GOAWAY: invalid last_stream_id"); |
4738 | 0 | } |
4739 | | |
4740 | 0 | session->goaway_flags |= NGHTTP2_GOAWAY_RECV; |
4741 | |
|
4742 | 0 | session->remote_last_stream_id = frame->goaway.last_stream_id; |
4743 | |
|
4744 | 0 | rv = session_call_on_frame_received(session, frame); |
4745 | |
|
4746 | 0 | if (nghttp2_is_fatal(rv)) { |
4747 | 0 | return rv; |
4748 | 0 | } |
4749 | | |
4750 | 0 | return session_close_stream_on_goaway(session, frame->goaway.last_stream_id, |
4751 | 0 | 0); |
4752 | 0 | } |
4753 | | |
4754 | 0 | static int session_process_goaway_frame(nghttp2_session *session) { |
4755 | 0 | nghttp2_inbound_frame *iframe = &session->iframe; |
4756 | 0 | nghttp2_frame *frame = &iframe->frame; |
4757 | |
|
4758 | 0 | nghttp2_frame_unpack_goaway_payload(&frame->goaway, iframe->sbuf.pos, |
4759 | 0 | iframe->lbuf.pos, |
4760 | 0 | nghttp2_buf_len(&iframe->lbuf)); |
4761 | |
|
4762 | 0 | nghttp2_buf_wrap_init(&iframe->lbuf, NULL, 0); |
4763 | |
|
4764 | 0 | return nghttp2_session_on_goaway_received(session, frame); |
4765 | 0 | } |
4766 | | |
4767 | | static int |
4768 | | session_on_connection_window_update_received(nghttp2_session *session, |
4769 | 0 | nghttp2_frame *frame) { |
4770 | | /* Handle connection-level flow control */ |
4771 | 0 | if (frame->window_update.window_size_increment == 0) { |
4772 | 0 | return session_handle_invalid_connection( |
4773 | 0 | session, frame, NGHTTP2_ERR_PROTO, |
4774 | 0 | "WINDOW_UPDATE: window_size_increment == 0"); |
4775 | 0 | } |
4776 | | |
4777 | 0 | if (NGHTTP2_MAX_WINDOW_SIZE - frame->window_update.window_size_increment < |
4778 | 0 | session->remote_window_size) { |
4779 | 0 | return session_handle_invalid_connection(session, frame, |
4780 | 0 | NGHTTP2_ERR_FLOW_CONTROL, NULL); |
4781 | 0 | } |
4782 | 0 | session->remote_window_size += frame->window_update.window_size_increment; |
4783 | |
|
4784 | 0 | return session_call_on_frame_received(session, frame); |
4785 | 0 | } |
4786 | | |
4787 | | static int session_on_stream_window_update_received(nghttp2_session *session, |
4788 | 0 | nghttp2_frame *frame) { |
4789 | 0 | int rv; |
4790 | 0 | nghttp2_stream *stream; |
4791 | |
|
4792 | 0 | if (session_detect_idle_stream(session, frame->hd.stream_id)) { |
4793 | 0 | return session_handle_invalid_connection(session, frame, NGHTTP2_ERR_PROTO, |
4794 | 0 | "WINDOW_UPDATE to idle stream"); |
4795 | 0 | } |
4796 | | |
4797 | 0 | stream = nghttp2_session_get_stream(session, frame->hd.stream_id); |
4798 | 0 | if (!stream) { |
4799 | 0 | return 0; |
4800 | 0 | } |
4801 | 0 | if (state_reserved_remote(session, stream)) { |
4802 | 0 | return session_handle_invalid_connection( |
4803 | 0 | session, frame, NGHTTP2_ERR_PROTO, "WINDOW_UPADATE to reserved stream"); |
4804 | 0 | } |
4805 | 0 | if (frame->window_update.window_size_increment == 0) { |
4806 | 0 | return session_handle_invalid_connection( |
4807 | 0 | session, frame, NGHTTP2_ERR_PROTO, |
4808 | 0 | "WINDOW_UPDATE: window_size_increment == 0"); |
4809 | 0 | } |
4810 | 0 | if (NGHTTP2_MAX_WINDOW_SIZE - frame->window_update.window_size_increment < |
4811 | 0 | stream->remote_window_size) { |
4812 | 0 | return session_handle_invalid_stream(session, frame, |
4813 | 0 | NGHTTP2_ERR_FLOW_CONTROL); |
4814 | 0 | } |
4815 | 0 | stream->remote_window_size += frame->window_update.window_size_increment; |
4816 | |
|
4817 | 0 | if (stream->remote_window_size > 0 && |
4818 | 0 | nghttp2_stream_check_deferred_by_flow_control(stream)) { |
4819 | |
|
4820 | 0 | rv = nghttp2_stream_resume_deferred_item( |
4821 | 0 | stream, NGHTTP2_STREAM_FLAG_DEFERRED_FLOW_CONTROL); |
4822 | |
|
4823 | 0 | if (nghttp2_is_fatal(rv)) { |
4824 | 0 | return rv; |
4825 | 0 | } |
4826 | 0 | } |
4827 | 0 | return session_call_on_frame_received(session, frame); |
4828 | 0 | } |
4829 | | |
4830 | | int nghttp2_session_on_window_update_received(nghttp2_session *session, |
4831 | 0 | nghttp2_frame *frame) { |
4832 | 0 | if (frame->hd.stream_id == 0) { |
4833 | 0 | return session_on_connection_window_update_received(session, frame); |
4834 | 0 | } else { |
4835 | 0 | return session_on_stream_window_update_received(session, frame); |
4836 | 0 | } |
4837 | 0 | } |
4838 | | |
4839 | 0 | static int session_process_window_update_frame(nghttp2_session *session) { |
4840 | 0 | nghttp2_inbound_frame *iframe = &session->iframe; |
4841 | 0 | nghttp2_frame *frame = &iframe->frame; |
4842 | |
|
4843 | 0 | nghttp2_frame_unpack_window_update_payload(&frame->window_update, |
4844 | 0 | iframe->sbuf.pos); |
4845 | |
|
4846 | 0 | return nghttp2_session_on_window_update_received(session, frame); |
4847 | 0 | } |
4848 | | |
4849 | | int nghttp2_session_on_altsvc_received(nghttp2_session *session, |
4850 | 0 | nghttp2_frame *frame) { |
4851 | 0 | nghttp2_ext_altsvc *altsvc; |
4852 | 0 | nghttp2_stream *stream; |
4853 | |
|
4854 | 0 | altsvc = frame->ext.payload; |
4855 | | |
4856 | | /* session->server case has been excluded */ |
4857 | |
|
4858 | 0 | if (frame->hd.stream_id == 0) { |
4859 | 0 | if (altsvc->origin_len == 0) { |
4860 | 0 | return session_call_on_invalid_frame_recv_callback(session, frame, |
4861 | 0 | NGHTTP2_ERR_PROTO); |
4862 | 0 | } |
4863 | 0 | } else { |
4864 | 0 | if (altsvc->origin_len > 0) { |
4865 | 0 | return session_call_on_invalid_frame_recv_callback(session, frame, |
4866 | 0 | NGHTTP2_ERR_PROTO); |
4867 | 0 | } |
4868 | | |
4869 | 0 | stream = nghttp2_session_get_stream(session, frame->hd.stream_id); |
4870 | 0 | if (!stream) { |
4871 | 0 | return 0; |
4872 | 0 | } |
4873 | | |
4874 | 0 | if (stream->state == NGHTTP2_STREAM_CLOSING) { |
4875 | 0 | return 0; |
4876 | 0 | } |
4877 | 0 | } |
4878 | | |
4879 | 0 | if (altsvc->field_value_len == 0) { |
4880 | 0 | return session_call_on_invalid_frame_recv_callback(session, frame, |
4881 | 0 | NGHTTP2_ERR_PROTO); |
4882 | 0 | } |
4883 | | |
4884 | 0 | return session_call_on_frame_received(session, frame); |
4885 | 0 | } |
4886 | | |
4887 | | int nghttp2_session_on_origin_received(nghttp2_session *session, |
4888 | 0 | nghttp2_frame *frame) { |
4889 | 0 | return session_call_on_frame_received(session, frame); |
4890 | 0 | } |
4891 | | |
4892 | 0 | static int session_process_altsvc_frame(nghttp2_session *session) { |
4893 | 0 | nghttp2_inbound_frame *iframe = &session->iframe; |
4894 | 0 | nghttp2_frame *frame = &iframe->frame; |
4895 | |
|
4896 | 0 | nghttp2_frame_unpack_altsvc_payload( |
4897 | 0 | &frame->ext, nghttp2_get_uint16(iframe->sbuf.pos), iframe->lbuf.pos, |
4898 | 0 | nghttp2_buf_len(&iframe->lbuf)); |
4899 | | |
4900 | | /* nghttp2_frame_unpack_altsvc_payload steals buffer from |
4901 | | iframe->lbuf */ |
4902 | 0 | nghttp2_buf_wrap_init(&iframe->lbuf, NULL, 0); |
4903 | |
|
4904 | 0 | return nghttp2_session_on_altsvc_received(session, frame); |
4905 | 0 | } |
4906 | | |
4907 | 0 | static int session_process_origin_frame(nghttp2_session *session) { |
4908 | 0 | nghttp2_inbound_frame *iframe = &session->iframe; |
4909 | 0 | nghttp2_frame *frame = &iframe->frame; |
4910 | 0 | nghttp2_mem *mem = &session->mem; |
4911 | 0 | int rv; |
4912 | |
|
4913 | 0 | rv = nghttp2_frame_unpack_origin_payload(&frame->ext, iframe->lbuf.pos, |
4914 | 0 | nghttp2_buf_len(&iframe->lbuf), mem); |
4915 | 0 | if (rv != 0) { |
4916 | 0 | if (nghttp2_is_fatal(rv)) { |
4917 | 0 | return rv; |
4918 | 0 | } |
4919 | | /* Ignore ORIGIN frame which cannot be parsed. */ |
4920 | 0 | return 0; |
4921 | 0 | } |
4922 | | |
4923 | 0 | return nghttp2_session_on_origin_received(session, frame); |
4924 | 0 | } |
4925 | | |
4926 | 0 | static int session_process_extension_frame(nghttp2_session *session) { |
4927 | 0 | int rv; |
4928 | 0 | nghttp2_inbound_frame *iframe = &session->iframe; |
4929 | 0 | nghttp2_frame *frame = &iframe->frame; |
4930 | |
|
4931 | 0 | rv = session_call_unpack_extension_callback(session); |
4932 | 0 | if (nghttp2_is_fatal(rv)) { |
4933 | 0 | return rv; |
4934 | 0 | } |
4935 | | |
4936 | | /* This handles the case where rv == NGHTTP2_ERR_CANCEL as well */ |
4937 | 0 | if (rv != 0) { |
4938 | 0 | return 0; |
4939 | 0 | } |
4940 | | |
4941 | 0 | return session_call_on_frame_received(session, frame); |
4942 | 0 | } |
4943 | | |
4944 | | int nghttp2_session_on_data_received(nghttp2_session *session, |
4945 | 0 | nghttp2_frame *frame) { |
4946 | 0 | int rv = 0; |
4947 | 0 | nghttp2_stream *stream; |
4948 | | |
4949 | | /* We don't call on_frame_recv_callback if stream has been closed |
4950 | | already or being closed. */ |
4951 | 0 | stream = nghttp2_session_get_stream(session, frame->hd.stream_id); |
4952 | 0 | if (!stream || stream->state == NGHTTP2_STREAM_CLOSING) { |
4953 | | /* This should be treated as stream error, but it results in lots |
4954 | | of RST_STREAM. So just ignore frame against nonexistent stream |
4955 | | for now. */ |
4956 | 0 | return 0; |
4957 | 0 | } |
4958 | | |
4959 | 0 | if (session_enforce_http_messaging(session) && |
4960 | 0 | (frame->hd.flags & NGHTTP2_FLAG_END_STREAM)) { |
4961 | 0 | if (nghttp2_http_on_remote_end_stream(stream) != 0) { |
4962 | 0 | rv = nghttp2_session_add_rst_stream(session, stream->stream_id, |
4963 | 0 | NGHTTP2_PROTOCOL_ERROR); |
4964 | 0 | if (nghttp2_is_fatal(rv)) { |
4965 | 0 | return rv; |
4966 | 0 | } |
4967 | | |
4968 | 0 | nghttp2_stream_shutdown(stream, NGHTTP2_SHUT_RD); |
4969 | | /* Don't call nghttp2_session_close_stream_if_shut_rdwr because |
4970 | | RST_STREAM has been submitted. */ |
4971 | 0 | return 0; |
4972 | 0 | } |
4973 | 0 | } |
4974 | | |
4975 | 0 | rv = session_call_on_frame_received(session, frame); |
4976 | 0 | if (nghttp2_is_fatal(rv)) { |
4977 | 0 | return rv; |
4978 | 0 | } |
4979 | | |
4980 | 0 | if (frame->hd.flags & NGHTTP2_FLAG_END_STREAM) { |
4981 | 0 | nghttp2_stream_shutdown(stream, NGHTTP2_SHUT_RD); |
4982 | 0 | rv = nghttp2_session_close_stream_if_shut_rdwr(session, stream); |
4983 | 0 | if (nghttp2_is_fatal(rv)) { |
4984 | 0 | return rv; |
4985 | 0 | } |
4986 | 0 | } |
4987 | 0 | return 0; |
4988 | 0 | } |
4989 | | |
4990 | | /* For errors, this function only returns FATAL error. */ |
4991 | 0 | static int session_process_data_frame(nghttp2_session *session) { |
4992 | 0 | int rv; |
4993 | 0 | nghttp2_frame *public_data_frame = &session->iframe.frame; |
4994 | 0 | rv = nghttp2_session_on_data_received(session, public_data_frame); |
4995 | 0 | if (nghttp2_is_fatal(rv)) { |
4996 | 0 | return rv; |
4997 | 0 | } |
4998 | 0 | return 0; |
4999 | 0 | } |
5000 | | |
5001 | | /* |
5002 | | * Now we have SETTINGS synchronization, flow control error can be |
5003 | | * detected strictly. If DATA frame is received with length > 0 and |
5004 | | * current received window size + delta length is strictly larger than |
5005 | | * local window size, it is subject to FLOW_CONTROL_ERROR, so return |
5006 | | * -1. Note that local_window_size is calculated after SETTINGS ACK is |
5007 | | * received from peer, so peer must honor this limit. If the resulting |
5008 | | * recv_window_size is strictly larger than NGHTTP2_MAX_WINDOW_SIZE, |
5009 | | * return -1 too. |
5010 | | */ |
5011 | | static int adjust_recv_window_size(int32_t *recv_window_size_ptr, size_t delta, |
5012 | 0 | int32_t local_window_size) { |
5013 | 0 | if (*recv_window_size_ptr > local_window_size - (int32_t)delta || |
5014 | 0 | *recv_window_size_ptr > NGHTTP2_MAX_WINDOW_SIZE - (int32_t)delta) { |
5015 | 0 | return -1; |
5016 | 0 | } |
5017 | 0 | *recv_window_size_ptr += (int32_t)delta; |
5018 | 0 | return 0; |
5019 | 0 | } |
5020 | | |
5021 | | int nghttp2_session_update_recv_stream_window_size(nghttp2_session *session, |
5022 | | nghttp2_stream *stream, |
5023 | | size_t delta_size, |
5024 | 0 | int send_window_update) { |
5025 | 0 | int rv; |
5026 | 0 | rv = adjust_recv_window_size(&stream->recv_window_size, delta_size, |
5027 | 0 | stream->local_window_size); |
5028 | 0 | if (rv != 0) { |
5029 | 0 | return nghttp2_session_add_rst_stream(session, stream->stream_id, |
5030 | 0 | NGHTTP2_FLOW_CONTROL_ERROR); |
5031 | 0 | } |
5032 | | /* We don't have to send WINDOW_UPDATE if the data received is the |
5033 | | last chunk in the incoming stream. */ |
5034 | | /* We have to use local_settings here because it is the constraint |
5035 | | the remote endpoint should honor. */ |
5036 | 0 | if (send_window_update && |
5037 | 0 | !(session->opt_flags & NGHTTP2_OPTMASK_NO_AUTO_WINDOW_UPDATE) && |
5038 | 0 | stream->window_update_queued == 0 && |
5039 | 0 | nghttp2_should_send_window_update(stream->local_window_size, |
5040 | 0 | stream->recv_window_size)) { |
5041 | 0 | rv = nghttp2_session_add_window_update(session, NGHTTP2_FLAG_NONE, |
5042 | 0 | stream->stream_id, |
5043 | 0 | stream->recv_window_size); |
5044 | 0 | if (rv != 0) { |
5045 | 0 | return rv; |
5046 | 0 | } |
5047 | | |
5048 | 0 | stream->recv_window_size = 0; |
5049 | 0 | } |
5050 | 0 | return 0; |
5051 | 0 | } |
5052 | | |
5053 | | int nghttp2_session_update_recv_connection_window_size(nghttp2_session *session, |
5054 | 0 | size_t delta_size) { |
5055 | 0 | int rv; |
5056 | 0 | rv = adjust_recv_window_size(&session->recv_window_size, delta_size, |
5057 | 0 | session->local_window_size); |
5058 | 0 | if (rv != 0) { |
5059 | 0 | return nghttp2_session_terminate_session(session, |
5060 | 0 | NGHTTP2_FLOW_CONTROL_ERROR); |
5061 | 0 | } |
5062 | 0 | if (!(session->opt_flags & NGHTTP2_OPTMASK_NO_AUTO_WINDOW_UPDATE) && |
5063 | 0 | session->window_update_queued == 0 && |
5064 | 0 | nghttp2_should_send_window_update(session->local_window_size, |
5065 | 0 | session->recv_window_size)) { |
5066 | | /* Use stream ID 0 to update connection-level flow control |
5067 | | window */ |
5068 | 0 | rv = nghttp2_session_add_window_update(session, NGHTTP2_FLAG_NONE, 0, |
5069 | 0 | session->recv_window_size); |
5070 | 0 | if (rv != 0) { |
5071 | 0 | return rv; |
5072 | 0 | } |
5073 | | |
5074 | 0 | session->recv_window_size = 0; |
5075 | 0 | } |
5076 | 0 | return 0; |
5077 | 0 | } |
5078 | | |
5079 | | static int session_update_consumed_size(nghttp2_session *session, |
5080 | | int32_t *consumed_size_ptr, |
5081 | | int32_t *recv_window_size_ptr, |
5082 | | uint8_t window_update_queued, |
5083 | | int32_t stream_id, size_t delta_size, |
5084 | 0 | int32_t local_window_size) { |
5085 | 0 | int32_t recv_size; |
5086 | 0 | int rv; |
5087 | |
|
5088 | 0 | if ((size_t)*consumed_size_ptr > NGHTTP2_MAX_WINDOW_SIZE - delta_size) { |
5089 | 0 | return nghttp2_session_terminate_session(session, |
5090 | 0 | NGHTTP2_FLOW_CONTROL_ERROR); |
5091 | 0 | } |
5092 | | |
5093 | 0 | *consumed_size_ptr += (int32_t)delta_size; |
5094 | |
|
5095 | 0 | if (window_update_queued == 0) { |
5096 | | /* recv_window_size may be smaller than consumed_size, because it |
5097 | | may be decreased by negative value with |
5098 | | nghttp2_submit_window_update(). */ |
5099 | 0 | recv_size = nghttp2_min(*consumed_size_ptr, *recv_window_size_ptr); |
5100 | |
|
5101 | 0 | if (nghttp2_should_send_window_update(local_window_size, recv_size)) { |
5102 | 0 | rv = nghttp2_session_add_window_update(session, NGHTTP2_FLAG_NONE, |
5103 | 0 | stream_id, recv_size); |
5104 | |
|
5105 | 0 | if (rv != 0) { |
5106 | 0 | return rv; |
5107 | 0 | } |
5108 | | |
5109 | 0 | *recv_window_size_ptr -= recv_size; |
5110 | 0 | *consumed_size_ptr -= recv_size; |
5111 | 0 | } |
5112 | 0 | } |
5113 | | |
5114 | 0 | return 0; |
5115 | 0 | } |
5116 | | |
5117 | | static int session_update_stream_consumed_size(nghttp2_session *session, |
5118 | | nghttp2_stream *stream, |
5119 | 0 | size_t delta_size) { |
5120 | 0 | return session_update_consumed_size( |
5121 | 0 | session, &stream->consumed_size, &stream->recv_window_size, |
5122 | 0 | stream->window_update_queued, stream->stream_id, delta_size, |
5123 | 0 | stream->local_window_size); |
5124 | 0 | } |
5125 | | |
5126 | | static int session_update_connection_consumed_size(nghttp2_session *session, |
5127 | 0 | size_t delta_size) { |
5128 | 0 | return session_update_consumed_size( |
5129 | 0 | session, &session->consumed_size, &session->recv_window_size, |
5130 | 0 | session->window_update_queued, 0, delta_size, session->local_window_size); |
5131 | 0 | } |
5132 | | |
5133 | | /* |
5134 | | * Checks that we can receive the DATA frame for stream, which is |
5135 | | * indicated by |session->iframe.frame.hd.stream_id|. If it is a |
5136 | | * connection error situation, GOAWAY frame will be issued by this |
5137 | | * function. |
5138 | | * |
5139 | | * If the DATA frame is allowed, returns 0. |
5140 | | * |
5141 | | * This function returns 0 if it succeeds, or one of the following |
5142 | | * negative error codes: |
5143 | | * |
5144 | | * NGHTTP2_ERR_IGN_PAYLOAD |
5145 | | * The reception of DATA frame is connection error; or should be |
5146 | | * ignored. |
5147 | | * NGHTTP2_ERR_NOMEM |
5148 | | * Out of memory. |
5149 | | */ |
5150 | 0 | static int session_on_data_received_fail_fast(nghttp2_session *session) { |
5151 | 0 | int rv; |
5152 | 0 | nghttp2_stream *stream; |
5153 | 0 | nghttp2_inbound_frame *iframe; |
5154 | 0 | int32_t stream_id; |
5155 | 0 | const char *failure_reason; |
5156 | 0 | uint32_t error_code = NGHTTP2_PROTOCOL_ERROR; |
5157 | |
|
5158 | 0 | iframe = &session->iframe; |
5159 | 0 | stream_id = iframe->frame.hd.stream_id; |
5160 | |
|
5161 | 0 | if (stream_id == 0) { |
5162 | | /* The spec says that if a DATA frame is received whose stream ID |
5163 | | is 0, the recipient MUST respond with a connection error of |
5164 | | type PROTOCOL_ERROR. */ |
5165 | 0 | failure_reason = "DATA: stream_id == 0"; |
5166 | 0 | goto fail; |
5167 | 0 | } |
5168 | | |
5169 | 0 | if (session_detect_idle_stream(session, stream_id)) { |
5170 | 0 | failure_reason = "DATA: stream in idle"; |
5171 | 0 | error_code = NGHTTP2_PROTOCOL_ERROR; |
5172 | 0 | goto fail; |
5173 | 0 | } |
5174 | | |
5175 | 0 | stream = nghttp2_session_get_stream(session, stream_id); |
5176 | 0 | if (!stream) { |
5177 | 0 | stream = nghttp2_session_get_stream_raw(session, stream_id); |
5178 | 0 | if (stream && (stream->shut_flags & NGHTTP2_SHUT_RD)) { |
5179 | 0 | failure_reason = "DATA: stream closed"; |
5180 | 0 | error_code = NGHTTP2_STREAM_CLOSED; |
5181 | 0 | goto fail; |
5182 | 0 | } |
5183 | | |
5184 | 0 | return NGHTTP2_ERR_IGN_PAYLOAD; |
5185 | 0 | } |
5186 | 0 | if (stream->shut_flags & NGHTTP2_SHUT_RD) { |
5187 | 0 | failure_reason = "DATA: stream in half-closed(remote)"; |
5188 | 0 | error_code = NGHTTP2_STREAM_CLOSED; |
5189 | 0 | goto fail; |
5190 | 0 | } |
5191 | | |
5192 | 0 | if (nghttp2_session_is_my_stream_id(session, stream_id)) { |
5193 | 0 | if (stream->state == NGHTTP2_STREAM_CLOSING) { |
5194 | 0 | return NGHTTP2_ERR_IGN_PAYLOAD; |
5195 | 0 | } |
5196 | 0 | if (stream->state != NGHTTP2_STREAM_OPENED) { |
5197 | 0 | failure_reason = "DATA: stream not opened"; |
5198 | 0 | goto fail; |
5199 | 0 | } |
5200 | 0 | return 0; |
5201 | 0 | } |
5202 | 0 | if (stream->state == NGHTTP2_STREAM_RESERVED) { |
5203 | 0 | failure_reason = "DATA: stream in reserved"; |
5204 | 0 | goto fail; |
5205 | 0 | } |
5206 | 0 | if (stream->state == NGHTTP2_STREAM_CLOSING) { |
5207 | 0 | return NGHTTP2_ERR_IGN_PAYLOAD; |
5208 | 0 | } |
5209 | 0 | return 0; |
5210 | 0 | fail: |
5211 | 0 | rv = nghttp2_session_terminate_session_with_reason(session, error_code, |
5212 | 0 | failure_reason); |
5213 | 0 | if (nghttp2_is_fatal(rv)) { |
5214 | 0 | return rv; |
5215 | 0 | } |
5216 | 0 | return NGHTTP2_ERR_IGN_PAYLOAD; |
5217 | 0 | } |
5218 | | |
5219 | | static size_t inbound_frame_payload_readlen(nghttp2_inbound_frame *iframe, |
5220 | | const uint8_t *in, |
5221 | 0 | const uint8_t *last) { |
5222 | 0 | return nghttp2_min((size_t)(last - in), iframe->payloadleft); |
5223 | 0 | } |
5224 | | |
5225 | | /* |
5226 | | * Resets iframe->sbuf and advance its mark pointer by |left| bytes. |
5227 | | */ |
5228 | 0 | static void inbound_frame_set_mark(nghttp2_inbound_frame *iframe, size_t left) { |
5229 | 0 | nghttp2_buf_reset(&iframe->sbuf); |
5230 | 0 | iframe->sbuf.mark += left; |
5231 | 0 | } |
5232 | | |
5233 | | static size_t inbound_frame_buf_read(nghttp2_inbound_frame *iframe, |
5234 | 0 | const uint8_t *in, const uint8_t *last) { |
5235 | 0 | size_t readlen; |
5236 | |
|
5237 | 0 | readlen = |
5238 | 0 | nghttp2_min((size_t)(last - in), nghttp2_buf_mark_avail(&iframe->sbuf)); |
5239 | |
|
5240 | 0 | iframe->sbuf.last = nghttp2_cpymem(iframe->sbuf.last, in, readlen); |
5241 | |
|
5242 | 0 | return readlen; |
5243 | 0 | } |
5244 | | |
5245 | | /* |
5246 | | * Unpacks SETTINGS entry in iframe->sbuf. |
5247 | | */ |
5248 | 0 | static void inbound_frame_set_settings_entry(nghttp2_inbound_frame *iframe) { |
5249 | 0 | nghttp2_settings_entry iv; |
5250 | 0 | nghttp2_settings_entry *min_header_table_size_entry; |
5251 | 0 | size_t i; |
5252 | |
|
5253 | 0 | nghttp2_frame_unpack_settings_entry(&iv, iframe->sbuf.pos); |
5254 | |
|
5255 | 0 | switch (iv.settings_id) { |
5256 | 0 | case NGHTTP2_SETTINGS_HEADER_TABLE_SIZE: |
5257 | 0 | case NGHTTP2_SETTINGS_ENABLE_PUSH: |
5258 | 0 | case NGHTTP2_SETTINGS_MAX_CONCURRENT_STREAMS: |
5259 | 0 | case NGHTTP2_SETTINGS_INITIAL_WINDOW_SIZE: |
5260 | 0 | case NGHTTP2_SETTINGS_MAX_FRAME_SIZE: |
5261 | 0 | case NGHTTP2_SETTINGS_MAX_HEADER_LIST_SIZE: |
5262 | 0 | case NGHTTP2_SETTINGS_ENABLE_CONNECT_PROTOCOL: |
5263 | 0 | break; |
5264 | 0 | default: |
5265 | 0 | DEBUGF("recv: unknown settings id=0x%02x\n", iv.settings_id); |
5266 | |
|
5267 | 0 | iframe->iv[iframe->niv++] = iv; |
5268 | |
|
5269 | 0 | return; |
5270 | 0 | } |
5271 | | |
5272 | 0 | for (i = 0; i < iframe->niv; ++i) { |
5273 | 0 | if (iframe->iv[i].settings_id == iv.settings_id) { |
5274 | 0 | iframe->iv[i] = iv; |
5275 | 0 | break; |
5276 | 0 | } |
5277 | 0 | } |
5278 | |
|
5279 | 0 | if (i == iframe->niv) { |
5280 | 0 | iframe->iv[iframe->niv++] = iv; |
5281 | 0 | } |
5282 | |
|
5283 | 0 | if (iv.settings_id == NGHTTP2_SETTINGS_HEADER_TABLE_SIZE) { |
5284 | | /* Keep track of minimum value of SETTINGS_HEADER_TABLE_SIZE */ |
5285 | 0 | min_header_table_size_entry = &iframe->iv[iframe->max_niv - 1]; |
5286 | |
|
5287 | 0 | if (iv.value < min_header_table_size_entry->value) { |
5288 | 0 | min_header_table_size_entry->value = iv.value; |
5289 | 0 | } |
5290 | 0 | } |
5291 | 0 | } |
5292 | | |
5293 | | /* |
5294 | | * Checks PADDED flags and set iframe->sbuf to read them accordingly. |
5295 | | * If padding is set, this function returns 1. If no padding is set, |
5296 | | * this function returns 0. On error, returns -1. |
5297 | | */ |
5298 | | static int inbound_frame_handle_pad(nghttp2_inbound_frame *iframe, |
5299 | 0 | nghttp2_frame_hd *hd) { |
5300 | 0 | if (hd->flags & NGHTTP2_FLAG_PADDED) { |
5301 | 0 | if (hd->length < 1) { |
5302 | 0 | return -1; |
5303 | 0 | } |
5304 | 0 | inbound_frame_set_mark(iframe, 1); |
5305 | 0 | return 1; |
5306 | 0 | } |
5307 | 0 | DEBUGF("recv: no padding in payload\n"); |
5308 | 0 | return 0; |
5309 | 0 | } |
5310 | | |
5311 | | /* |
5312 | | * Computes number of padding based on flags. This function returns |
5313 | | * the calculated length if it succeeds, or -1. |
5314 | | */ |
5315 | 0 | static ssize_t inbound_frame_compute_pad(nghttp2_inbound_frame *iframe) { |
5316 | 0 | size_t padlen; |
5317 | | |
5318 | | /* 1 for Pad Length field */ |
5319 | 0 | padlen = (size_t)(iframe->sbuf.pos[0] + 1); |
5320 | |
|
5321 | 0 | DEBUGF("recv: padlen=%zu\n", padlen); |
5322 | | |
5323 | | /* We cannot use iframe->frame.hd.length because of CONTINUATION */ |
5324 | 0 | if (padlen - 1 > iframe->payloadleft) { |
5325 | 0 | return -1; |
5326 | 0 | } |
5327 | | |
5328 | 0 | iframe->padlen = padlen; |
5329 | |
|
5330 | 0 | return (ssize_t)padlen; |
5331 | 0 | } |
5332 | | |
5333 | | /* |
5334 | | * This function returns the effective payload length in the data of |
5335 | | * length |readlen| when the remaning payload is |payloadleft|. The |
5336 | | * |payloadleft| does not include |readlen|. If padding was started |
5337 | | * strictly before this data chunk, this function returns -1. |
5338 | | */ |
5339 | | static ssize_t inbound_frame_effective_readlen(nghttp2_inbound_frame *iframe, |
5340 | | size_t payloadleft, |
5341 | 0 | size_t readlen) { |
5342 | 0 | size_t trail_padlen = |
5343 | 0 | nghttp2_frame_trail_padlen(&iframe->frame, iframe->padlen); |
5344 | |
|
5345 | 0 | if (trail_padlen > payloadleft) { |
5346 | 0 | size_t padlen; |
5347 | 0 | padlen = trail_padlen - payloadleft; |
5348 | 0 | if (readlen < padlen) { |
5349 | 0 | return -1; |
5350 | 0 | } |
5351 | 0 | return (ssize_t)(readlen - padlen); |
5352 | 0 | } |
5353 | 0 | return (ssize_t)(readlen); |
5354 | 0 | } |
5355 | | |
5356 | | ssize_t nghttp2_session_mem_recv(nghttp2_session *session, const uint8_t *in, |
5357 | 0 | size_t inlen) { |
5358 | 0 | const uint8_t *first = in, *last = in + inlen; |
5359 | 0 | nghttp2_inbound_frame *iframe = &session->iframe; |
5360 | 0 | size_t readlen; |
5361 | 0 | ssize_t padlen; |
5362 | 0 | int rv; |
5363 | 0 | int busy = 0; |
5364 | 0 | nghttp2_frame_hd cont_hd; |
5365 | 0 | nghttp2_stream *stream; |
5366 | 0 | size_t pri_fieldlen; |
5367 | 0 | nghttp2_mem *mem; |
5368 | |
|
5369 | 0 | DEBUGF("recv: connection recv_window_size=%d, local_window=%d\n", |
5370 | 0 | session->recv_window_size, session->local_window_size); |
5371 | |
|
5372 | 0 | mem = &session->mem; |
5373 | | |
5374 | | /* We may have idle streams more than we expect (e.g., |
5375 | | nghttp2_session_change_stream_priority() or |
5376 | | nghttp2_session_create_idle_stream()). Adjust them here. */ |
5377 | 0 | rv = nghttp2_session_adjust_idle_stream(session); |
5378 | 0 | if (nghttp2_is_fatal(rv)) { |
5379 | 0 | return rv; |
5380 | 0 | } |
5381 | | |
5382 | 0 | if (!nghttp2_session_want_read(session)) { |
5383 | 0 | return (ssize_t)inlen; |
5384 | 0 | } |
5385 | | |
5386 | 0 | for (;;) { |
5387 | 0 | switch (iframe->state) { |
5388 | 0 | case NGHTTP2_IB_READ_CLIENT_MAGIC: |
5389 | 0 | readlen = nghttp2_min(inlen, iframe->payloadleft); |
5390 | |
|
5391 | 0 | if (memcmp(&NGHTTP2_CLIENT_MAGIC[NGHTTP2_CLIENT_MAGIC_LEN - |
5392 | 0 | iframe->payloadleft], |
5393 | 0 | in, readlen) != 0) { |
5394 | 0 | return NGHTTP2_ERR_BAD_CLIENT_MAGIC; |
5395 | 0 | } |
5396 | | |
5397 | 0 | iframe->payloadleft -= readlen; |
5398 | 0 | in += readlen; |
5399 | |
|
5400 | 0 | if (iframe->payloadleft == 0) { |
5401 | 0 | session_inbound_frame_reset(session); |
5402 | 0 | iframe->state = NGHTTP2_IB_READ_FIRST_SETTINGS; |
5403 | 0 | } |
5404 | |
|
5405 | 0 | break; |
5406 | 0 | case NGHTTP2_IB_READ_FIRST_SETTINGS: |
5407 | 0 | DEBUGF("recv: [IB_READ_FIRST_SETTINGS]\n"); |
5408 | |
|
5409 | 0 | readlen = inbound_frame_buf_read(iframe, in, last); |
5410 | 0 | in += readlen; |
5411 | |
|
5412 | 0 | if (nghttp2_buf_mark_avail(&iframe->sbuf)) { |
5413 | 0 | return in - first; |
5414 | 0 | } |
5415 | | |
5416 | 0 | if (iframe->sbuf.pos[3] != NGHTTP2_SETTINGS || |
5417 | 0 | (iframe->sbuf.pos[4] & NGHTTP2_FLAG_ACK)) { |
5418 | 0 | rv = session_call_error_callback( |
5419 | 0 | session, NGHTTP2_ERR_SETTINGS_EXPECTED, |
5420 | 0 | "Remote peer returned unexpected data while we expected " |
5421 | 0 | "SETTINGS frame. Perhaps, peer does not support HTTP/2 " |
5422 | 0 | "properly."); |
5423 | |
|
5424 | 0 | if (nghttp2_is_fatal(rv)) { |
5425 | 0 | return rv; |
5426 | 0 | } |
5427 | | |
5428 | 0 | rv = nghttp2_session_terminate_session_with_reason( |
5429 | 0 | session, NGHTTP2_PROTOCOL_ERROR, "SETTINGS expected"); |
5430 | |
|
5431 | 0 | if (nghttp2_is_fatal(rv)) { |
5432 | 0 | return rv; |
5433 | 0 | } |
5434 | | |
5435 | 0 | return (ssize_t)inlen; |
5436 | 0 | } |
5437 | | |
5438 | 0 | iframe->state = NGHTTP2_IB_READ_HEAD; |
5439 | | |
5440 | | /* Fall through */ |
5441 | 0 | case NGHTTP2_IB_READ_HEAD: { |
5442 | 0 | int on_begin_frame_called = 0; |
5443 | |
|
5444 | 0 | DEBUGF("recv: [IB_READ_HEAD]\n"); |
5445 | |
|
5446 | 0 | readlen = inbound_frame_buf_read(iframe, in, last); |
5447 | 0 | in += readlen; |
5448 | |
|
5449 | 0 | if (nghttp2_buf_mark_avail(&iframe->sbuf)) { |
5450 | 0 | return in - first; |
5451 | 0 | } |
5452 | | |
5453 | 0 | nghttp2_frame_unpack_frame_hd(&iframe->frame.hd, iframe->sbuf.pos); |
5454 | 0 | iframe->payloadleft = iframe->frame.hd.length; |
5455 | |
|
5456 | 0 | DEBUGF("recv: payloadlen=%zu, type=%u, flags=0x%02x, stream_id=%d\n", |
5457 | 0 | iframe->frame.hd.length, iframe->frame.hd.type, |
5458 | 0 | iframe->frame.hd.flags, iframe->frame.hd.stream_id); |
5459 | |
|
5460 | 0 | if (iframe->frame.hd.length > session->local_settings.max_frame_size) { |
5461 | 0 | DEBUGF("recv: length is too large %zu > %u\n", iframe->frame.hd.length, |
5462 | 0 | session->local_settings.max_frame_size); |
5463 | |
|
5464 | 0 | rv = nghttp2_session_terminate_session_with_reason( |
5465 | 0 | session, NGHTTP2_FRAME_SIZE_ERROR, "too large frame size"); |
5466 | |
|
5467 | 0 | if (nghttp2_is_fatal(rv)) { |
5468 | 0 | return rv; |
5469 | 0 | } |
5470 | | |
5471 | 0 | return (ssize_t)inlen; |
5472 | 0 | } |
5473 | | |
5474 | 0 | switch (iframe->frame.hd.type) { |
5475 | 0 | case NGHTTP2_DATA: { |
5476 | 0 | DEBUGF("recv: DATA\n"); |
5477 | |
|
5478 | 0 | iframe->frame.hd.flags &= |
5479 | 0 | (NGHTTP2_FLAG_END_STREAM | NGHTTP2_FLAG_PADDED); |
5480 | | /* Check stream is open. If it is not open or closing, |
5481 | | ignore payload. */ |
5482 | 0 | busy = 1; |
5483 | |
|
5484 | 0 | rv = session_on_data_received_fail_fast(session); |
5485 | 0 | if (iframe->state == NGHTTP2_IB_IGN_ALL) { |
5486 | 0 | return (ssize_t)inlen; |
5487 | 0 | } |
5488 | 0 | if (rv == NGHTTP2_ERR_IGN_PAYLOAD) { |
5489 | 0 | DEBUGF("recv: DATA not allowed stream_id=%d\n", |
5490 | 0 | iframe->frame.hd.stream_id); |
5491 | 0 | iframe->state = NGHTTP2_IB_IGN_DATA; |
5492 | 0 | break; |
5493 | 0 | } |
5494 | | |
5495 | 0 | if (nghttp2_is_fatal(rv)) { |
5496 | 0 | return rv; |
5497 | 0 | } |
5498 | | |
5499 | 0 | rv = inbound_frame_handle_pad(iframe, &iframe->frame.hd); |
5500 | 0 | if (rv < 0) { |
5501 | 0 | rv = nghttp2_session_terminate_session_with_reason( |
5502 | 0 | session, NGHTTP2_PROTOCOL_ERROR, |
5503 | 0 | "DATA: insufficient padding space"); |
5504 | |
|
5505 | 0 | if (nghttp2_is_fatal(rv)) { |
5506 | 0 | return rv; |
5507 | 0 | } |
5508 | 0 | return (ssize_t)inlen; |
5509 | 0 | } |
5510 | | |
5511 | 0 | if (rv == 1) { |
5512 | 0 | iframe->state = NGHTTP2_IB_READ_PAD_DATA; |
5513 | 0 | break; |
5514 | 0 | } |
5515 | | |
5516 | 0 | iframe->state = NGHTTP2_IB_READ_DATA; |
5517 | 0 | break; |
5518 | 0 | } |
5519 | 0 | case NGHTTP2_HEADERS: |
5520 | |
|
5521 | 0 | DEBUGF("recv: HEADERS\n"); |
5522 | |
|
5523 | 0 | iframe->frame.hd.flags &= |
5524 | 0 | (NGHTTP2_FLAG_END_STREAM | NGHTTP2_FLAG_END_HEADERS | |
5525 | 0 | NGHTTP2_FLAG_PADDED | NGHTTP2_FLAG_PRIORITY); |
5526 | |
|
5527 | 0 | rv = inbound_frame_handle_pad(iframe, &iframe->frame.hd); |
5528 | 0 | if (rv < 0) { |
5529 | 0 | rv = nghttp2_session_terminate_session_with_reason( |
5530 | 0 | session, NGHTTP2_PROTOCOL_ERROR, |
5531 | 0 | "HEADERS: insufficient padding space"); |
5532 | 0 | if (nghttp2_is_fatal(rv)) { |
5533 | 0 | return rv; |
5534 | 0 | } |
5535 | 0 | return (ssize_t)inlen; |
5536 | 0 | } |
5537 | | |
5538 | 0 | if (rv == 1) { |
5539 | 0 | iframe->state = NGHTTP2_IB_READ_NBYTE; |
5540 | 0 | break; |
5541 | 0 | } |
5542 | | |
5543 | 0 | pri_fieldlen = nghttp2_frame_priority_len(iframe->frame.hd.flags); |
5544 | |
|
5545 | 0 | if (pri_fieldlen > 0) { |
5546 | 0 | if (iframe->payloadleft < pri_fieldlen) { |
5547 | 0 | busy = 1; |
5548 | 0 | iframe->state = NGHTTP2_IB_FRAME_SIZE_ERROR; |
5549 | 0 | break; |
5550 | 0 | } |
5551 | | |
5552 | 0 | iframe->state = NGHTTP2_IB_READ_NBYTE; |
5553 | |
|
5554 | 0 | inbound_frame_set_mark(iframe, pri_fieldlen); |
5555 | |
|
5556 | 0 | break; |
5557 | 0 | } |
5558 | | |
5559 | | /* Call on_begin_frame_callback here because |
5560 | | session_process_headers_frame() may call |
5561 | | on_begin_headers_callback */ |
5562 | 0 | rv = session_call_on_begin_frame(session, &iframe->frame.hd); |
5563 | |
|
5564 | 0 | if (nghttp2_is_fatal(rv)) { |
5565 | 0 | return rv; |
5566 | 0 | } |
5567 | | |
5568 | 0 | on_begin_frame_called = 1; |
5569 | |
|
5570 | 0 | rv = session_process_headers_frame(session); |
5571 | 0 | if (nghttp2_is_fatal(rv)) { |
5572 | 0 | return rv; |
5573 | 0 | } |
5574 | | |
5575 | 0 | busy = 1; |
5576 | |
|
5577 | 0 | if (iframe->state == NGHTTP2_IB_IGN_ALL) { |
5578 | 0 | return (ssize_t)inlen; |
5579 | 0 | } |
5580 | | |
5581 | 0 | if (rv == NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE) { |
5582 | 0 | rv = nghttp2_session_add_rst_stream( |
5583 | 0 | session, iframe->frame.hd.stream_id, NGHTTP2_INTERNAL_ERROR); |
5584 | 0 | if (nghttp2_is_fatal(rv)) { |
5585 | 0 | return rv; |
5586 | 0 | } |
5587 | 0 | iframe->state = NGHTTP2_IB_IGN_HEADER_BLOCK; |
5588 | 0 | break; |
5589 | 0 | } |
5590 | | |
5591 | 0 | if (rv == NGHTTP2_ERR_IGN_HEADER_BLOCK) { |
5592 | 0 | iframe->state = NGHTTP2_IB_IGN_HEADER_BLOCK; |
5593 | 0 | break; |
5594 | 0 | } |
5595 | | |
5596 | 0 | iframe->state = NGHTTP2_IB_READ_HEADER_BLOCK; |
5597 | |
|
5598 | 0 | break; |
5599 | 0 | case NGHTTP2_PRIORITY: |
5600 | 0 | DEBUGF("recv: PRIORITY\n"); |
5601 | |
|
5602 | 0 | iframe->frame.hd.flags = NGHTTP2_FLAG_NONE; |
5603 | |
|
5604 | 0 | if (iframe->payloadleft != NGHTTP2_PRIORITY_SPECLEN) { |
5605 | 0 | busy = 1; |
5606 | |
|
5607 | 0 | iframe->state = NGHTTP2_IB_FRAME_SIZE_ERROR; |
5608 | |
|
5609 | 0 | break; |
5610 | 0 | } |
5611 | | |
5612 | 0 | iframe->state = NGHTTP2_IB_READ_NBYTE; |
5613 | |
|
5614 | 0 | inbound_frame_set_mark(iframe, NGHTTP2_PRIORITY_SPECLEN); |
5615 | |
|
5616 | 0 | break; |
5617 | 0 | case NGHTTP2_RST_STREAM: |
5618 | 0 | case NGHTTP2_WINDOW_UPDATE: |
5619 | | #ifdef DEBUGBUILD |
5620 | | switch (iframe->frame.hd.type) { |
5621 | | case NGHTTP2_RST_STREAM: |
5622 | | DEBUGF("recv: RST_STREAM\n"); |
5623 | | break; |
5624 | | case NGHTTP2_WINDOW_UPDATE: |
5625 | | DEBUGF("recv: WINDOW_UPDATE\n"); |
5626 | | break; |
5627 | | } |
5628 | | #endif /* DEBUGBUILD */ |
5629 | |
|
5630 | 0 | iframe->frame.hd.flags = NGHTTP2_FLAG_NONE; |
5631 | |
|
5632 | 0 | if (iframe->payloadleft != 4) { |
5633 | 0 | busy = 1; |
5634 | 0 | iframe->state = NGHTTP2_IB_FRAME_SIZE_ERROR; |
5635 | 0 | break; |
5636 | 0 | } |
5637 | | |
5638 | 0 | iframe->state = NGHTTP2_IB_READ_NBYTE; |
5639 | |
|
5640 | 0 | inbound_frame_set_mark(iframe, 4); |
5641 | |
|
5642 | 0 | break; |
5643 | 0 | case NGHTTP2_SETTINGS: |
5644 | 0 | DEBUGF("recv: SETTINGS\n"); |
5645 | |
|
5646 | 0 | iframe->frame.hd.flags &= NGHTTP2_FLAG_ACK; |
5647 | |
|
5648 | 0 | if ((iframe->frame.hd.length % NGHTTP2_FRAME_SETTINGS_ENTRY_LENGTH) || |
5649 | 0 | ((iframe->frame.hd.flags & NGHTTP2_FLAG_ACK) && |
5650 | 0 | iframe->payloadleft > 0)) { |
5651 | 0 | busy = 1; |
5652 | 0 | iframe->state = NGHTTP2_IB_FRAME_SIZE_ERROR; |
5653 | 0 | break; |
5654 | 0 | } |
5655 | | |
5656 | | /* Check the settings flood counter early to be safe */ |
5657 | 0 | if (session->obq_flood_counter_ >= session->max_outbound_ack && |
5658 | 0 | !(iframe->frame.hd.flags & NGHTTP2_FLAG_ACK)) { |
5659 | 0 | return NGHTTP2_ERR_FLOODED; |
5660 | 0 | } |
5661 | | |
5662 | 0 | iframe->state = NGHTTP2_IB_READ_SETTINGS; |
5663 | |
|
5664 | 0 | if (iframe->payloadleft) { |
5665 | 0 | nghttp2_settings_entry *min_header_table_size_entry; |
5666 | | |
5667 | | /* We allocate iv with additional one entry, to store the |
5668 | | minimum header table size. */ |
5669 | 0 | iframe->max_niv = |
5670 | 0 | iframe->frame.hd.length / NGHTTP2_FRAME_SETTINGS_ENTRY_LENGTH + 1; |
5671 | |
|
5672 | 0 | if (iframe->max_niv - 1 > session->max_settings) { |
5673 | 0 | rv = nghttp2_session_terminate_session_with_reason( |
5674 | 0 | session, NGHTTP2_ENHANCE_YOUR_CALM, |
5675 | 0 | "SETTINGS: too many setting entries"); |
5676 | 0 | if (nghttp2_is_fatal(rv)) { |
5677 | 0 | return rv; |
5678 | 0 | } |
5679 | 0 | return (ssize_t)inlen; |
5680 | 0 | } |
5681 | | |
5682 | 0 | iframe->iv = nghttp2_mem_malloc(mem, sizeof(nghttp2_settings_entry) * |
5683 | 0 | iframe->max_niv); |
5684 | |
|
5685 | 0 | if (!iframe->iv) { |
5686 | 0 | return NGHTTP2_ERR_NOMEM; |
5687 | 0 | } |
5688 | | |
5689 | 0 | min_header_table_size_entry = &iframe->iv[iframe->max_niv - 1]; |
5690 | 0 | min_header_table_size_entry->settings_id = |
5691 | 0 | NGHTTP2_SETTINGS_HEADER_TABLE_SIZE; |
5692 | 0 | min_header_table_size_entry->value = UINT32_MAX; |
5693 | |
|
5694 | 0 | inbound_frame_set_mark(iframe, NGHTTP2_FRAME_SETTINGS_ENTRY_LENGTH); |
5695 | 0 | break; |
5696 | 0 | } |
5697 | | |
5698 | 0 | busy = 1; |
5699 | |
|
5700 | 0 | inbound_frame_set_mark(iframe, 0); |
5701 | |
|
5702 | 0 | break; |
5703 | 0 | case NGHTTP2_PUSH_PROMISE: |
5704 | 0 | DEBUGF("recv: PUSH_PROMISE\n"); |
5705 | |
|
5706 | 0 | iframe->frame.hd.flags &= |
5707 | 0 | (NGHTTP2_FLAG_END_HEADERS | NGHTTP2_FLAG_PADDED); |
5708 | |
|
5709 | 0 | rv = inbound_frame_handle_pad(iframe, &iframe->frame.hd); |
5710 | 0 | if (rv < 0) { |
5711 | 0 | rv = nghttp2_session_terminate_session_with_reason( |
5712 | 0 | session, NGHTTP2_PROTOCOL_ERROR, |
5713 | 0 | "PUSH_PROMISE: insufficient padding space"); |
5714 | 0 | if (nghttp2_is_fatal(rv)) { |
5715 | 0 | return rv; |
5716 | 0 | } |
5717 | 0 | return (ssize_t)inlen; |
5718 | 0 | } |
5719 | | |
5720 | 0 | if (rv == 1) { |
5721 | 0 | iframe->state = NGHTTP2_IB_READ_NBYTE; |
5722 | 0 | break; |
5723 | 0 | } |
5724 | | |
5725 | 0 | if (iframe->payloadleft < 4) { |
5726 | 0 | busy = 1; |
5727 | 0 | iframe->state = NGHTTP2_IB_FRAME_SIZE_ERROR; |
5728 | 0 | break; |
5729 | 0 | } |
5730 | | |
5731 | 0 | iframe->state = NGHTTP2_IB_READ_NBYTE; |
5732 | |
|
5733 | 0 | inbound_frame_set_mark(iframe, 4); |
5734 | |
|
5735 | 0 | break; |
5736 | 0 | case NGHTTP2_PING: |
5737 | 0 | DEBUGF("recv: PING\n"); |
5738 | |
|
5739 | 0 | iframe->frame.hd.flags &= NGHTTP2_FLAG_ACK; |
5740 | |
|
5741 | 0 | if (iframe->payloadleft != 8) { |
5742 | 0 | busy = 1; |
5743 | 0 | iframe->state = NGHTTP2_IB_FRAME_SIZE_ERROR; |
5744 | 0 | break; |
5745 | 0 | } |
5746 | | |
5747 | 0 | iframe->state = NGHTTP2_IB_READ_NBYTE; |
5748 | 0 | inbound_frame_set_mark(iframe, 8); |
5749 | |
|
5750 | 0 | break; |
5751 | 0 | case NGHTTP2_GOAWAY: |
5752 | 0 | DEBUGF("recv: GOAWAY\n"); |
5753 | |
|
5754 | 0 | iframe->frame.hd.flags = NGHTTP2_FLAG_NONE; |
5755 | |
|
5756 | 0 | if (iframe->payloadleft < 8) { |
5757 | 0 | busy = 1; |
5758 | 0 | iframe->state = NGHTTP2_IB_FRAME_SIZE_ERROR; |
5759 | 0 | break; |
5760 | 0 | } |
5761 | | |
5762 | 0 | iframe->state = NGHTTP2_IB_READ_NBYTE; |
5763 | 0 | inbound_frame_set_mark(iframe, 8); |
5764 | |
|
5765 | 0 | break; |
5766 | 0 | case NGHTTP2_CONTINUATION: |
5767 | 0 | DEBUGF("recv: unexpected CONTINUATION\n"); |
5768 | | |
5769 | | /* Receiving CONTINUATION in this state are subject to |
5770 | | connection error of type PROTOCOL_ERROR */ |
5771 | 0 | rv = nghttp2_session_terminate_session_with_reason( |
5772 | 0 | session, NGHTTP2_PROTOCOL_ERROR, "CONTINUATION: unexpected"); |
5773 | 0 | if (nghttp2_is_fatal(rv)) { |
5774 | 0 | return rv; |
5775 | 0 | } |
5776 | | |
5777 | 0 | return (ssize_t)inlen; |
5778 | 0 | default: |
5779 | 0 | DEBUGF("recv: extension frame\n"); |
5780 | |
|
5781 | 0 | if (check_ext_type_set(session->user_recv_ext_types, |
5782 | 0 | iframe->frame.hd.type)) { |
5783 | 0 | if (!session->callbacks.unpack_extension_callback) { |
5784 | | /* Silently ignore unknown frame type. */ |
5785 | |
|
5786 | 0 | busy = 1; |
5787 | |
|
5788 | 0 | iframe->state = NGHTTP2_IB_IGN_PAYLOAD; |
5789 | |
|
5790 | 0 | break; |
5791 | 0 | } |
5792 | | |
5793 | 0 | busy = 1; |
5794 | |
|
5795 | 0 | iframe->state = NGHTTP2_IB_READ_EXTENSION_PAYLOAD; |
5796 | |
|
5797 | 0 | break; |
5798 | 0 | } else { |
5799 | 0 | switch (iframe->frame.hd.type) { |
5800 | 0 | case NGHTTP2_ALTSVC: |
5801 | 0 | if ((session->builtin_recv_ext_types & NGHTTP2_TYPEMASK_ALTSVC) == |
5802 | 0 | 0) { |
5803 | 0 | busy = 1; |
5804 | 0 | iframe->state = NGHTTP2_IB_IGN_PAYLOAD; |
5805 | 0 | break; |
5806 | 0 | } |
5807 | | |
5808 | 0 | DEBUGF("recv: ALTSVC\n"); |
5809 | |
|
5810 | 0 | iframe->frame.hd.flags = NGHTTP2_FLAG_NONE; |
5811 | 0 | iframe->frame.ext.payload = &iframe->ext_frame_payload.altsvc; |
5812 | |
|
5813 | 0 | if (session->server) { |
5814 | 0 | busy = 1; |
5815 | 0 | iframe->state = NGHTTP2_IB_IGN_PAYLOAD; |
5816 | 0 | break; |
5817 | 0 | } |
5818 | | |
5819 | 0 | if (iframe->payloadleft < 2) { |
5820 | 0 | busy = 1; |
5821 | 0 | iframe->state = NGHTTP2_IB_FRAME_SIZE_ERROR; |
5822 | 0 | break; |
5823 | 0 | } |
5824 | | |
5825 | 0 | busy = 1; |
5826 | |
|
5827 | 0 | iframe->state = NGHTTP2_IB_READ_NBYTE; |
5828 | 0 | inbound_frame_set_mark(iframe, 2); |
5829 | |
|
5830 | 0 | break; |
5831 | 0 | case NGHTTP2_ORIGIN: |
5832 | 0 | if (!(session->builtin_recv_ext_types & NGHTTP2_TYPEMASK_ORIGIN)) { |
5833 | 0 | busy = 1; |
5834 | 0 | iframe->state = NGHTTP2_IB_IGN_PAYLOAD; |
5835 | 0 | break; |
5836 | 0 | } |
5837 | | |
5838 | 0 | DEBUGF("recv: ORIGIN\n"); |
5839 | |
|
5840 | 0 | iframe->frame.ext.payload = &iframe->ext_frame_payload.origin; |
5841 | |
|
5842 | 0 | if (session->server || iframe->frame.hd.stream_id || |
5843 | 0 | (iframe->frame.hd.flags & 0xf0)) { |
5844 | 0 | busy = 1; |
5845 | 0 | iframe->state = NGHTTP2_IB_IGN_PAYLOAD; |
5846 | 0 | break; |
5847 | 0 | } |
5848 | | |
5849 | 0 | iframe->frame.hd.flags = NGHTTP2_FLAG_NONE; |
5850 | |
|
5851 | 0 | if (iframe->payloadleft) { |
5852 | 0 | iframe->raw_lbuf = nghttp2_mem_malloc(mem, iframe->payloadleft); |
5853 | |
|
5854 | 0 | if (iframe->raw_lbuf == NULL) { |
5855 | 0 | return NGHTTP2_ERR_NOMEM; |
5856 | 0 | } |
5857 | | |
5858 | 0 | nghttp2_buf_wrap_init(&iframe->lbuf, iframe->raw_lbuf, |
5859 | 0 | iframe->payloadleft); |
5860 | 0 | } else { |
5861 | 0 | busy = 1; |
5862 | 0 | } |
5863 | | |
5864 | 0 | iframe->state = NGHTTP2_IB_READ_ORIGIN_PAYLOAD; |
5865 | |
|
5866 | 0 | break; |
5867 | 0 | default: |
5868 | 0 | busy = 1; |
5869 | |
|
5870 | 0 | iframe->state = NGHTTP2_IB_IGN_PAYLOAD; |
5871 | |
|
5872 | 0 | break; |
5873 | 0 | } |
5874 | 0 | } |
5875 | 0 | } |
5876 | | |
5877 | 0 | if (!on_begin_frame_called) { |
5878 | 0 | switch (iframe->state) { |
5879 | 0 | case NGHTTP2_IB_IGN_HEADER_BLOCK: |
5880 | 0 | case NGHTTP2_IB_IGN_PAYLOAD: |
5881 | 0 | case NGHTTP2_IB_FRAME_SIZE_ERROR: |
5882 | 0 | case NGHTTP2_IB_IGN_DATA: |
5883 | 0 | case NGHTTP2_IB_IGN_ALL: |
5884 | 0 | break; |
5885 | 0 | default: |
5886 | 0 | rv = session_call_on_begin_frame(session, &iframe->frame.hd); |
5887 | |
|
5888 | 0 | if (nghttp2_is_fatal(rv)) { |
5889 | 0 | return rv; |
5890 | 0 | } |
5891 | 0 | } |
5892 | 0 | } |
5893 | | |
5894 | 0 | break; |
5895 | 0 | } |
5896 | 0 | case NGHTTP2_IB_READ_NBYTE: |
5897 | 0 | DEBUGF("recv: [IB_READ_NBYTE]\n"); |
5898 | |
|
5899 | 0 | readlen = inbound_frame_buf_read(iframe, in, last); |
5900 | 0 | in += readlen; |
5901 | 0 | iframe->payloadleft -= readlen; |
5902 | |
|
5903 | 0 | DEBUGF("recv: readlen=%zu, payloadleft=%zu, left=%zd\n", readlen, |
5904 | 0 | iframe->payloadleft, nghttp2_buf_mark_avail(&iframe->sbuf)); |
5905 | |
|
5906 | 0 | if (nghttp2_buf_mark_avail(&iframe->sbuf)) { |
5907 | 0 | return in - first; |
5908 | 0 | } |
5909 | | |
5910 | 0 | switch (iframe->frame.hd.type) { |
5911 | 0 | case NGHTTP2_HEADERS: |
5912 | 0 | if (iframe->padlen == 0 && |
5913 | 0 | (iframe->frame.hd.flags & NGHTTP2_FLAG_PADDED)) { |
5914 | 0 | pri_fieldlen = nghttp2_frame_priority_len(iframe->frame.hd.flags); |
5915 | 0 | padlen = inbound_frame_compute_pad(iframe); |
5916 | 0 | if (padlen < 0 || |
5917 | 0 | (size_t)padlen + pri_fieldlen > 1 + iframe->payloadleft) { |
5918 | 0 | rv = nghttp2_session_terminate_session_with_reason( |
5919 | 0 | session, NGHTTP2_PROTOCOL_ERROR, "HEADERS: invalid padding"); |
5920 | 0 | if (nghttp2_is_fatal(rv)) { |
5921 | 0 | return rv; |
5922 | 0 | } |
5923 | 0 | return (ssize_t)inlen; |
5924 | 0 | } |
5925 | 0 | iframe->frame.headers.padlen = (size_t)padlen; |
5926 | |
|
5927 | 0 | if (pri_fieldlen > 0) { |
5928 | 0 | if (iframe->payloadleft < pri_fieldlen) { |
5929 | 0 | busy = 1; |
5930 | 0 | iframe->state = NGHTTP2_IB_FRAME_SIZE_ERROR; |
5931 | 0 | break; |
5932 | 0 | } |
5933 | 0 | iframe->state = NGHTTP2_IB_READ_NBYTE; |
5934 | 0 | inbound_frame_set_mark(iframe, pri_fieldlen); |
5935 | 0 | break; |
5936 | 0 | } else { |
5937 | | /* Truncate buffers used for padding spec */ |
5938 | 0 | inbound_frame_set_mark(iframe, 0); |
5939 | 0 | } |
5940 | 0 | } |
5941 | | |
5942 | 0 | rv = session_process_headers_frame(session); |
5943 | 0 | if (nghttp2_is_fatal(rv)) { |
5944 | 0 | return rv; |
5945 | 0 | } |
5946 | | |
5947 | 0 | busy = 1; |
5948 | |
|
5949 | 0 | if (iframe->state == NGHTTP2_IB_IGN_ALL) { |
5950 | 0 | return (ssize_t)inlen; |
5951 | 0 | } |
5952 | | |
5953 | 0 | if (rv == NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE) { |
5954 | 0 | rv = nghttp2_session_add_rst_stream( |
5955 | 0 | session, iframe->frame.hd.stream_id, NGHTTP2_INTERNAL_ERROR); |
5956 | 0 | if (nghttp2_is_fatal(rv)) { |
5957 | 0 | return rv; |
5958 | 0 | } |
5959 | 0 | iframe->state = NGHTTP2_IB_IGN_HEADER_BLOCK; |
5960 | 0 | break; |
5961 | 0 | } |
5962 | | |
5963 | 0 | if (rv == NGHTTP2_ERR_IGN_HEADER_BLOCK) { |
5964 | 0 | iframe->state = NGHTTP2_IB_IGN_HEADER_BLOCK; |
5965 | 0 | break; |
5966 | 0 | } |
5967 | | |
5968 | 0 | iframe->state = NGHTTP2_IB_READ_HEADER_BLOCK; |
5969 | |
|
5970 | 0 | break; |
5971 | 0 | case NGHTTP2_PRIORITY: |
5972 | 0 | rv = session_process_priority_frame(session); |
5973 | 0 | if (nghttp2_is_fatal(rv)) { |
5974 | 0 | return rv; |
5975 | 0 | } |
5976 | | |
5977 | 0 | if (iframe->state == NGHTTP2_IB_IGN_ALL) { |
5978 | 0 | return (ssize_t)inlen; |
5979 | 0 | } |
5980 | | |
5981 | 0 | session_inbound_frame_reset(session); |
5982 | |
|
5983 | 0 | break; |
5984 | 0 | case NGHTTP2_RST_STREAM: |
5985 | 0 | rv = session_process_rst_stream_frame(session); |
5986 | 0 | if (nghttp2_is_fatal(rv)) { |
5987 | 0 | return rv; |
5988 | 0 | } |
5989 | | |
5990 | 0 | if (iframe->state == NGHTTP2_IB_IGN_ALL) { |
5991 | 0 | return (ssize_t)inlen; |
5992 | 0 | } |
5993 | | |
5994 | 0 | session_inbound_frame_reset(session); |
5995 | |
|
5996 | 0 | break; |
5997 | 0 | case NGHTTP2_PUSH_PROMISE: |
5998 | 0 | if (iframe->padlen == 0 && |
5999 | 0 | (iframe->frame.hd.flags & NGHTTP2_FLAG_PADDED)) { |
6000 | 0 | padlen = inbound_frame_compute_pad(iframe); |
6001 | 0 | if (padlen < 0 || (size_t)padlen + 4 /* promised stream id */ |
6002 | 0 | > 1 + iframe->payloadleft) { |
6003 | 0 | rv = nghttp2_session_terminate_session_with_reason( |
6004 | 0 | session, NGHTTP2_PROTOCOL_ERROR, |
6005 | 0 | "PUSH_PROMISE: invalid padding"); |
6006 | 0 | if (nghttp2_is_fatal(rv)) { |
6007 | 0 | return rv; |
6008 | 0 | } |
6009 | 0 | return (ssize_t)inlen; |
6010 | 0 | } |
6011 | | |
6012 | 0 | iframe->frame.push_promise.padlen = (size_t)padlen; |
6013 | |
|
6014 | 0 | if (iframe->payloadleft < 4) { |
6015 | 0 | busy = 1; |
6016 | 0 | iframe->state = NGHTTP2_IB_FRAME_SIZE_ERROR; |
6017 | 0 | break; |
6018 | 0 | } |
6019 | | |
6020 | 0 | iframe->state = NGHTTP2_IB_READ_NBYTE; |
6021 | |
|
6022 | 0 | inbound_frame_set_mark(iframe, 4); |
6023 | |
|
6024 | 0 | break; |
6025 | 0 | } |
6026 | | |
6027 | 0 | rv = session_process_push_promise_frame(session); |
6028 | 0 | if (nghttp2_is_fatal(rv)) { |
6029 | 0 | return rv; |
6030 | 0 | } |
6031 | | |
6032 | 0 | busy = 1; |
6033 | |
|
6034 | 0 | if (iframe->state == NGHTTP2_IB_IGN_ALL) { |
6035 | 0 | return (ssize_t)inlen; |
6036 | 0 | } |
6037 | | |
6038 | 0 | if (rv == NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE) { |
6039 | 0 | rv = nghttp2_session_add_rst_stream( |
6040 | 0 | session, iframe->frame.push_promise.promised_stream_id, |
6041 | 0 | NGHTTP2_INTERNAL_ERROR); |
6042 | 0 | if (nghttp2_is_fatal(rv)) { |
6043 | 0 | return rv; |
6044 | 0 | } |
6045 | 0 | iframe->state = NGHTTP2_IB_IGN_HEADER_BLOCK; |
6046 | 0 | break; |
6047 | 0 | } |
6048 | | |
6049 | 0 | if (rv == NGHTTP2_ERR_IGN_HEADER_BLOCK) { |
6050 | 0 | iframe->state = NGHTTP2_IB_IGN_HEADER_BLOCK; |
6051 | 0 | break; |
6052 | 0 | } |
6053 | | |
6054 | 0 | iframe->state = NGHTTP2_IB_READ_HEADER_BLOCK; |
6055 | |
|
6056 | 0 | break; |
6057 | 0 | case NGHTTP2_PING: |
6058 | 0 | rv = session_process_ping_frame(session); |
6059 | 0 | if (nghttp2_is_fatal(rv)) { |
6060 | 0 | return rv; |
6061 | 0 | } |
6062 | | |
6063 | 0 | if (iframe->state == NGHTTP2_IB_IGN_ALL) { |
6064 | 0 | return (ssize_t)inlen; |
6065 | 0 | } |
6066 | | |
6067 | 0 | session_inbound_frame_reset(session); |
6068 | |
|
6069 | 0 | break; |
6070 | 0 | case NGHTTP2_GOAWAY: { |
6071 | 0 | size_t debuglen; |
6072 | | |
6073 | | /* 8 is Last-stream-ID + Error Code */ |
6074 | 0 | debuglen = iframe->frame.hd.length - 8; |
6075 | |
|
6076 | 0 | if (debuglen > 0) { |
6077 | 0 | iframe->raw_lbuf = nghttp2_mem_malloc(mem, debuglen); |
6078 | |
|
6079 | 0 | if (iframe->raw_lbuf == NULL) { |
6080 | 0 | return NGHTTP2_ERR_NOMEM; |
6081 | 0 | } |
6082 | | |
6083 | 0 | nghttp2_buf_wrap_init(&iframe->lbuf, iframe->raw_lbuf, debuglen); |
6084 | 0 | } |
6085 | | |
6086 | 0 | busy = 1; |
6087 | |
|
6088 | 0 | iframe->state = NGHTTP2_IB_READ_GOAWAY_DEBUG; |
6089 | |
|
6090 | 0 | break; |
6091 | 0 | } |
6092 | 0 | case NGHTTP2_WINDOW_UPDATE: |
6093 | 0 | rv = session_process_window_update_frame(session); |
6094 | 0 | if (nghttp2_is_fatal(rv)) { |
6095 | 0 | return rv; |
6096 | 0 | } |
6097 | | |
6098 | 0 | if (iframe->state == NGHTTP2_IB_IGN_ALL) { |
6099 | 0 | return (ssize_t)inlen; |
6100 | 0 | } |
6101 | | |
6102 | 0 | session_inbound_frame_reset(session); |
6103 | |
|
6104 | 0 | break; |
6105 | 0 | case NGHTTP2_ALTSVC: { |
6106 | 0 | size_t origin_len; |
6107 | |
|
6108 | 0 | origin_len = nghttp2_get_uint16(iframe->sbuf.pos); |
6109 | |
|
6110 | 0 | DEBUGF("recv: origin_len=%zu\n", origin_len); |
6111 | |
|
6112 | 0 | if (origin_len > iframe->payloadleft) { |
6113 | 0 | busy = 1; |
6114 | 0 | iframe->state = NGHTTP2_IB_FRAME_SIZE_ERROR; |
6115 | 0 | break; |
6116 | 0 | } |
6117 | | |
6118 | 0 | if (iframe->frame.hd.length > 2) { |
6119 | 0 | iframe->raw_lbuf = |
6120 | 0 | nghttp2_mem_malloc(mem, iframe->frame.hd.length - 2); |
6121 | |
|
6122 | 0 | if (iframe->raw_lbuf == NULL) { |
6123 | 0 | return NGHTTP2_ERR_NOMEM; |
6124 | 0 | } |
6125 | | |
6126 | 0 | nghttp2_buf_wrap_init(&iframe->lbuf, iframe->raw_lbuf, |
6127 | 0 | iframe->frame.hd.length); |
6128 | 0 | } |
6129 | | |
6130 | 0 | busy = 1; |
6131 | |
|
6132 | 0 | iframe->state = NGHTTP2_IB_READ_ALTSVC_PAYLOAD; |
6133 | |
|
6134 | 0 | break; |
6135 | 0 | } |
6136 | 0 | default: |
6137 | | /* This is unknown frame */ |
6138 | 0 | session_inbound_frame_reset(session); |
6139 | |
|
6140 | 0 | break; |
6141 | 0 | } |
6142 | 0 | break; |
6143 | 0 | case NGHTTP2_IB_READ_HEADER_BLOCK: |
6144 | 0 | case NGHTTP2_IB_IGN_HEADER_BLOCK: { |
6145 | 0 | ssize_t data_readlen; |
6146 | 0 | size_t trail_padlen; |
6147 | 0 | int final; |
6148 | | #ifdef DEBUGBUILD |
6149 | | if (iframe->state == NGHTTP2_IB_READ_HEADER_BLOCK) { |
6150 | | DEBUGF("recv: [IB_READ_HEADER_BLOCK]\n"); |
6151 | | } else { |
6152 | | DEBUGF("recv: [IB_IGN_HEADER_BLOCK]\n"); |
6153 | | } |
6154 | | #endif /* DEBUGBUILD */ |
6155 | |
|
6156 | 0 | readlen = inbound_frame_payload_readlen(iframe, in, last); |
6157 | |
|
6158 | 0 | DEBUGF("recv: readlen=%zu, payloadleft=%zu\n", readlen, |
6159 | 0 | iframe->payloadleft - readlen); |
6160 | |
|
6161 | 0 | data_readlen = inbound_frame_effective_readlen( |
6162 | 0 | iframe, iframe->payloadleft - readlen, readlen); |
6163 | |
|
6164 | 0 | if (data_readlen == -1) { |
6165 | | /* everything is padding */ |
6166 | 0 | data_readlen = 0; |
6167 | 0 | } |
6168 | |
|
6169 | 0 | trail_padlen = nghttp2_frame_trail_padlen(&iframe->frame, iframe->padlen); |
6170 | |
|
6171 | 0 | final = (iframe->frame.hd.flags & NGHTTP2_FLAG_END_HEADERS) && |
6172 | 0 | iframe->payloadleft - (size_t)data_readlen == trail_padlen; |
6173 | |
|
6174 | 0 | if (data_readlen > 0 || (data_readlen == 0 && final)) { |
6175 | 0 | size_t hd_proclen = 0; |
6176 | |
|
6177 | 0 | DEBUGF("recv: block final=%d\n", final); |
6178 | |
|
6179 | 0 | rv = |
6180 | 0 | inflate_header_block(session, &iframe->frame, &hd_proclen, |
6181 | 0 | (uint8_t *)in, (size_t)data_readlen, final, |
6182 | 0 | iframe->state == NGHTTP2_IB_READ_HEADER_BLOCK); |
6183 | |
|
6184 | 0 | if (nghttp2_is_fatal(rv)) { |
6185 | 0 | return rv; |
6186 | 0 | } |
6187 | | |
6188 | 0 | if (iframe->state == NGHTTP2_IB_IGN_ALL) { |
6189 | 0 | return (ssize_t)inlen; |
6190 | 0 | } |
6191 | | |
6192 | 0 | if (rv == NGHTTP2_ERR_PAUSE) { |
6193 | 0 | in += hd_proclen; |
6194 | 0 | iframe->payloadleft -= hd_proclen; |
6195 | |
|
6196 | 0 | return in - first; |
6197 | 0 | } |
6198 | | |
6199 | 0 | if (rv == NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE) { |
6200 | | /* The application says no more headers. We decompress the |
6201 | | rest of the header block but not invoke on_header_callback |
6202 | | and on_frame_recv_callback. */ |
6203 | 0 | in += hd_proclen; |
6204 | 0 | iframe->payloadleft -= hd_proclen; |
6205 | | |
6206 | | /* Use promised stream ID for PUSH_PROMISE */ |
6207 | 0 | rv = nghttp2_session_add_rst_stream( |
6208 | 0 | session, |
6209 | 0 | iframe->frame.hd.type == NGHTTP2_PUSH_PROMISE |
6210 | 0 | ? iframe->frame.push_promise.promised_stream_id |
6211 | 0 | : iframe->frame.hd.stream_id, |
6212 | 0 | NGHTTP2_INTERNAL_ERROR); |
6213 | 0 | if (nghttp2_is_fatal(rv)) { |
6214 | 0 | return rv; |
6215 | 0 | } |
6216 | 0 | busy = 1; |
6217 | 0 | iframe->state = NGHTTP2_IB_IGN_HEADER_BLOCK; |
6218 | 0 | break; |
6219 | 0 | } |
6220 | | |
6221 | 0 | in += readlen; |
6222 | 0 | iframe->payloadleft -= readlen; |
6223 | |
|
6224 | 0 | if (rv == NGHTTP2_ERR_HEADER_COMP) { |
6225 | | /* GOAWAY is already issued */ |
6226 | 0 | if (iframe->payloadleft == 0) { |
6227 | 0 | session_inbound_frame_reset(session); |
6228 | 0 | } else { |
6229 | 0 | busy = 1; |
6230 | 0 | iframe->state = NGHTTP2_IB_IGN_PAYLOAD; |
6231 | 0 | } |
6232 | 0 | break; |
6233 | 0 | } |
6234 | 0 | } else { |
6235 | 0 | in += readlen; |
6236 | 0 | iframe->payloadleft -= readlen; |
6237 | 0 | } |
6238 | | |
6239 | 0 | if (iframe->payloadleft) { |
6240 | 0 | break; |
6241 | 0 | } |
6242 | | |
6243 | 0 | if ((iframe->frame.hd.flags & NGHTTP2_FLAG_END_HEADERS) == 0) { |
6244 | |
|
6245 | 0 | inbound_frame_set_mark(iframe, NGHTTP2_FRAME_HDLEN); |
6246 | |
|
6247 | 0 | iframe->padlen = 0; |
6248 | |
|
6249 | 0 | if (iframe->state == NGHTTP2_IB_READ_HEADER_BLOCK) { |
6250 | 0 | iframe->state = NGHTTP2_IB_EXPECT_CONTINUATION; |
6251 | 0 | } else { |
6252 | 0 | iframe->state = NGHTTP2_IB_IGN_CONTINUATION; |
6253 | 0 | } |
6254 | 0 | } else { |
6255 | 0 | if (iframe->state == NGHTTP2_IB_READ_HEADER_BLOCK) { |
6256 | 0 | rv = session_after_header_block_received(session); |
6257 | 0 | if (nghttp2_is_fatal(rv)) { |
6258 | 0 | return rv; |
6259 | 0 | } |
6260 | 0 | } |
6261 | 0 | session_inbound_frame_reset(session); |
6262 | 0 | } |
6263 | 0 | break; |
6264 | 0 | } |
6265 | 0 | case NGHTTP2_IB_IGN_PAYLOAD: |
6266 | 0 | DEBUGF("recv: [IB_IGN_PAYLOAD]\n"); |
6267 | |
|
6268 | 0 | readlen = inbound_frame_payload_readlen(iframe, in, last); |
6269 | 0 | iframe->payloadleft -= readlen; |
6270 | 0 | in += readlen; |
6271 | |
|
6272 | 0 | DEBUGF("recv: readlen=%zu, payloadleft=%zu\n", readlen, |
6273 | 0 | iframe->payloadleft); |
6274 | |
|
6275 | 0 | if (iframe->payloadleft) { |
6276 | 0 | break; |
6277 | 0 | } |
6278 | | |
6279 | 0 | switch (iframe->frame.hd.type) { |
6280 | 0 | case NGHTTP2_HEADERS: |
6281 | 0 | case NGHTTP2_PUSH_PROMISE: |
6282 | 0 | case NGHTTP2_CONTINUATION: |
6283 | | /* Mark inflater bad so that we won't perform further decoding */ |
6284 | 0 | session->hd_inflater.ctx.bad = 1; |
6285 | 0 | break; |
6286 | 0 | default: |
6287 | 0 | break; |
6288 | 0 | } |
6289 | | |
6290 | 0 | session_inbound_frame_reset(session); |
6291 | |
|
6292 | 0 | break; |
6293 | 0 | case NGHTTP2_IB_FRAME_SIZE_ERROR: |
6294 | 0 | DEBUGF("recv: [IB_FRAME_SIZE_ERROR]\n"); |
6295 | |
|
6296 | 0 | rv = session_handle_frame_size_error(session); |
6297 | 0 | if (nghttp2_is_fatal(rv)) { |
6298 | 0 | return rv; |
6299 | 0 | } |
6300 | | |
6301 | 0 | assert(iframe->state == NGHTTP2_IB_IGN_ALL); |
6302 | | |
6303 | 0 | return (ssize_t)inlen; |
6304 | 0 | case NGHTTP2_IB_READ_SETTINGS: |
6305 | 0 | DEBUGF("recv: [IB_READ_SETTINGS]\n"); |
6306 | |
|
6307 | 0 | readlen = inbound_frame_buf_read(iframe, in, last); |
6308 | 0 | iframe->payloadleft -= readlen; |
6309 | 0 | in += readlen; |
6310 | |
|
6311 | 0 | DEBUGF("recv: readlen=%zu, payloadleft=%zu\n", readlen, |
6312 | 0 | iframe->payloadleft); |
6313 | |
|
6314 | 0 | if (nghttp2_buf_mark_avail(&iframe->sbuf)) { |
6315 | 0 | break; |
6316 | 0 | } |
6317 | | |
6318 | 0 | if (readlen > 0) { |
6319 | 0 | inbound_frame_set_settings_entry(iframe); |
6320 | 0 | } |
6321 | 0 | if (iframe->payloadleft) { |
6322 | 0 | inbound_frame_set_mark(iframe, NGHTTP2_FRAME_SETTINGS_ENTRY_LENGTH); |
6323 | 0 | break; |
6324 | 0 | } |
6325 | | |
6326 | 0 | rv = session_process_settings_frame(session); |
6327 | |
|
6328 | 0 | if (nghttp2_is_fatal(rv)) { |
6329 | 0 | return rv; |
6330 | 0 | } |
6331 | | |
6332 | 0 | if (iframe->state == NGHTTP2_IB_IGN_ALL) { |
6333 | 0 | return (ssize_t)inlen; |
6334 | 0 | } |
6335 | | |
6336 | 0 | session_inbound_frame_reset(session); |
6337 | |
|
6338 | 0 | break; |
6339 | 0 | case NGHTTP2_IB_READ_GOAWAY_DEBUG: |
6340 | 0 | DEBUGF("recv: [IB_READ_GOAWAY_DEBUG]\n"); |
6341 | |
|
6342 | 0 | readlen = inbound_frame_payload_readlen(iframe, in, last); |
6343 | |
|
6344 | 0 | if (readlen > 0) { |
6345 | 0 | iframe->lbuf.last = nghttp2_cpymem(iframe->lbuf.last, in, readlen); |
6346 | |
|
6347 | 0 | iframe->payloadleft -= readlen; |
6348 | 0 | in += readlen; |
6349 | 0 | } |
6350 | |
|
6351 | 0 | DEBUGF("recv: readlen=%zu, payloadleft=%zu\n", readlen, |
6352 | 0 | iframe->payloadleft); |
6353 | |
|
6354 | 0 | if (iframe->payloadleft) { |
6355 | 0 | assert(nghttp2_buf_avail(&iframe->lbuf) > 0); |
6356 | | |
6357 | 0 | break; |
6358 | 0 | } |
6359 | | |
6360 | 0 | rv = session_process_goaway_frame(session); |
6361 | |
|
6362 | 0 | if (nghttp2_is_fatal(rv)) { |
6363 | 0 | return rv; |
6364 | 0 | } |
6365 | | |
6366 | 0 | if (iframe->state == NGHTTP2_IB_IGN_ALL) { |
6367 | 0 | return (ssize_t)inlen; |
6368 | 0 | } |
6369 | | |
6370 | 0 | session_inbound_frame_reset(session); |
6371 | |
|
6372 | 0 | break; |
6373 | 0 | case NGHTTP2_IB_EXPECT_CONTINUATION: |
6374 | 0 | case NGHTTP2_IB_IGN_CONTINUATION: |
6375 | | #ifdef DEBUGBUILD |
6376 | | if (iframe->state == NGHTTP2_IB_EXPECT_CONTINUATION) { |
6377 | | fprintf(stderr, "recv: [IB_EXPECT_CONTINUATION]\n"); |
6378 | | } else { |
6379 | | fprintf(stderr, "recv: [IB_IGN_CONTINUATION]\n"); |
6380 | | } |
6381 | | #endif /* DEBUGBUILD */ |
6382 | |
|
6383 | 0 | readlen = inbound_frame_buf_read(iframe, in, last); |
6384 | 0 | in += readlen; |
6385 | |
|
6386 | 0 | if (nghttp2_buf_mark_avail(&iframe->sbuf)) { |
6387 | 0 | return in - first; |
6388 | 0 | } |
6389 | | |
6390 | 0 | nghttp2_frame_unpack_frame_hd(&cont_hd, iframe->sbuf.pos); |
6391 | 0 | iframe->payloadleft = cont_hd.length; |
6392 | |
|
6393 | 0 | DEBUGF("recv: payloadlen=%zu, type=%u, flags=0x%02x, stream_id=%d\n", |
6394 | 0 | cont_hd.length, cont_hd.type, cont_hd.flags, cont_hd.stream_id); |
6395 | |
|
6396 | 0 | if (cont_hd.type != NGHTTP2_CONTINUATION || |
6397 | 0 | cont_hd.stream_id != iframe->frame.hd.stream_id) { |
6398 | 0 | DEBUGF("recv: expected stream_id=%d, type=%d, but got stream_id=%d, " |
6399 | 0 | "type=%u\n", |
6400 | 0 | iframe->frame.hd.stream_id, NGHTTP2_CONTINUATION, |
6401 | 0 | cont_hd.stream_id, cont_hd.type); |
6402 | 0 | rv = nghttp2_session_terminate_session_with_reason( |
6403 | 0 | session, NGHTTP2_PROTOCOL_ERROR, |
6404 | 0 | "unexpected non-CONTINUATION frame or stream_id is invalid"); |
6405 | 0 | if (nghttp2_is_fatal(rv)) { |
6406 | 0 | return rv; |
6407 | 0 | } |
6408 | | |
6409 | 0 | return (ssize_t)inlen; |
6410 | 0 | } |
6411 | | |
6412 | | /* CONTINUATION won't bear NGHTTP2_PADDED flag */ |
6413 | | |
6414 | 0 | iframe->frame.hd.flags = (uint8_t)( |
6415 | 0 | iframe->frame.hd.flags | (cont_hd.flags & NGHTTP2_FLAG_END_HEADERS)); |
6416 | 0 | iframe->frame.hd.length += cont_hd.length; |
6417 | |
|
6418 | 0 | busy = 1; |
6419 | |
|
6420 | 0 | if (iframe->state == NGHTTP2_IB_EXPECT_CONTINUATION) { |
6421 | 0 | iframe->state = NGHTTP2_IB_READ_HEADER_BLOCK; |
6422 | |
|
6423 | 0 | rv = session_call_on_begin_frame(session, &cont_hd); |
6424 | |
|
6425 | 0 | if (nghttp2_is_fatal(rv)) { |
6426 | 0 | return rv; |
6427 | 0 | } |
6428 | 0 | } else { |
6429 | 0 | iframe->state = NGHTTP2_IB_IGN_HEADER_BLOCK; |
6430 | 0 | } |
6431 | | |
6432 | 0 | break; |
6433 | 0 | case NGHTTP2_IB_READ_PAD_DATA: |
6434 | 0 | DEBUGF("recv: [IB_READ_PAD_DATA]\n"); |
6435 | |
|
6436 | 0 | readlen = inbound_frame_buf_read(iframe, in, last); |
6437 | 0 | in += readlen; |
6438 | 0 | iframe->payloadleft -= readlen; |
6439 | |
|
6440 | 0 | DEBUGF("recv: readlen=%zu, payloadleft=%zu, left=%zu\n", readlen, |
6441 | 0 | iframe->payloadleft, nghttp2_buf_mark_avail(&iframe->sbuf)); |
6442 | |
|
6443 | 0 | if (nghttp2_buf_mark_avail(&iframe->sbuf)) { |
6444 | 0 | return in - first; |
6445 | 0 | } |
6446 | | |
6447 | | /* Pad Length field is subject to flow control */ |
6448 | 0 | rv = nghttp2_session_update_recv_connection_window_size(session, readlen); |
6449 | 0 | if (nghttp2_is_fatal(rv)) { |
6450 | 0 | return rv; |
6451 | 0 | } |
6452 | | |
6453 | 0 | if (iframe->state == NGHTTP2_IB_IGN_ALL) { |
6454 | 0 | return (ssize_t)inlen; |
6455 | 0 | } |
6456 | | |
6457 | | /* Pad Length field is consumed immediately */ |
6458 | 0 | rv = |
6459 | 0 | nghttp2_session_consume(session, iframe->frame.hd.stream_id, readlen); |
6460 | |
|
6461 | 0 | if (nghttp2_is_fatal(rv)) { |
6462 | 0 | return rv; |
6463 | 0 | } |
6464 | | |
6465 | 0 | if (iframe->state == NGHTTP2_IB_IGN_ALL) { |
6466 | 0 | return (ssize_t)inlen; |
6467 | 0 | } |
6468 | | |
6469 | 0 | stream = nghttp2_session_get_stream(session, iframe->frame.hd.stream_id); |
6470 | 0 | if (stream) { |
6471 | 0 | rv = nghttp2_session_update_recv_stream_window_size( |
6472 | 0 | session, stream, readlen, |
6473 | 0 | iframe->payloadleft || |
6474 | 0 | (iframe->frame.hd.flags & NGHTTP2_FLAG_END_STREAM) == 0); |
6475 | 0 | if (nghttp2_is_fatal(rv)) { |
6476 | 0 | return rv; |
6477 | 0 | } |
6478 | 0 | } |
6479 | | |
6480 | 0 | busy = 1; |
6481 | |
|
6482 | 0 | padlen = inbound_frame_compute_pad(iframe); |
6483 | 0 | if (padlen < 0) { |
6484 | 0 | rv = nghttp2_session_terminate_session_with_reason( |
6485 | 0 | session, NGHTTP2_PROTOCOL_ERROR, "DATA: invalid padding"); |
6486 | 0 | if (nghttp2_is_fatal(rv)) { |
6487 | 0 | return rv; |
6488 | 0 | } |
6489 | 0 | return (ssize_t)inlen; |
6490 | 0 | } |
6491 | | |
6492 | 0 | iframe->frame.data.padlen = (size_t)padlen; |
6493 | |
|
6494 | 0 | iframe->state = NGHTTP2_IB_READ_DATA; |
6495 | |
|
6496 | 0 | break; |
6497 | 0 | case NGHTTP2_IB_READ_DATA: |
6498 | 0 | stream = nghttp2_session_get_stream(session, iframe->frame.hd.stream_id); |
6499 | |
|
6500 | 0 | if (!stream) { |
6501 | 0 | busy = 1; |
6502 | 0 | iframe->state = NGHTTP2_IB_IGN_DATA; |
6503 | 0 | break; |
6504 | 0 | } |
6505 | | |
6506 | 0 | DEBUGF("recv: [IB_READ_DATA]\n"); |
6507 | |
|
6508 | 0 | readlen = inbound_frame_payload_readlen(iframe, in, last); |
6509 | 0 | iframe->payloadleft -= readlen; |
6510 | 0 | in += readlen; |
6511 | |
|
6512 | 0 | DEBUGF("recv: readlen=%zu, payloadleft=%zu\n", readlen, |
6513 | 0 | iframe->payloadleft); |
6514 | |
|
6515 | 0 | if (readlen > 0) { |
6516 | 0 | ssize_t data_readlen; |
6517 | |
|
6518 | 0 | rv = nghttp2_session_update_recv_connection_window_size(session, |
6519 | 0 | readlen); |
6520 | 0 | if (nghttp2_is_fatal(rv)) { |
6521 | 0 | return rv; |
6522 | 0 | } |
6523 | | |
6524 | 0 | if (iframe->state == NGHTTP2_IB_IGN_ALL) { |
6525 | 0 | return (ssize_t)inlen; |
6526 | 0 | } |
6527 | | |
6528 | 0 | rv = nghttp2_session_update_recv_stream_window_size( |
6529 | 0 | session, stream, readlen, |
6530 | 0 | iframe->payloadleft || |
6531 | 0 | (iframe->frame.hd.flags & NGHTTP2_FLAG_END_STREAM) == 0); |
6532 | 0 | if (nghttp2_is_fatal(rv)) { |
6533 | 0 | return rv; |
6534 | 0 | } |
6535 | | |
6536 | 0 | data_readlen = inbound_frame_effective_readlen( |
6537 | 0 | iframe, iframe->payloadleft, readlen); |
6538 | |
|
6539 | 0 | if (data_readlen == -1) { |
6540 | | /* everything is padding */ |
6541 | 0 | data_readlen = 0; |
6542 | 0 | } |
6543 | |
|
6544 | 0 | padlen = (ssize_t)readlen - data_readlen; |
6545 | |
|
6546 | 0 | if (padlen > 0) { |
6547 | | /* Padding is considered as "consumed" immediately */ |
6548 | 0 | rv = nghttp2_session_consume(session, iframe->frame.hd.stream_id, |
6549 | 0 | (size_t)padlen); |
6550 | |
|
6551 | 0 | if (nghttp2_is_fatal(rv)) { |
6552 | 0 | return rv; |
6553 | 0 | } |
6554 | | |
6555 | 0 | if (iframe->state == NGHTTP2_IB_IGN_ALL) { |
6556 | 0 | return (ssize_t)inlen; |
6557 | 0 | } |
6558 | 0 | } |
6559 | | |
6560 | 0 | DEBUGF("recv: data_readlen=%zd\n", data_readlen); |
6561 | |
|
6562 | 0 | if (data_readlen > 0) { |
6563 | 0 | if (session_enforce_http_messaging(session)) { |
6564 | 0 | if (nghttp2_http_on_data_chunk(stream, (size_t)data_readlen) != 0) { |
6565 | 0 | if (session->opt_flags & NGHTTP2_OPTMASK_NO_AUTO_WINDOW_UPDATE) { |
6566 | | /* Consume all data for connection immediately here */ |
6567 | 0 | rv = session_update_connection_consumed_size( |
6568 | 0 | session, (size_t)data_readlen); |
6569 | |
|
6570 | 0 | if (nghttp2_is_fatal(rv)) { |
6571 | 0 | return rv; |
6572 | 0 | } |
6573 | | |
6574 | 0 | if (iframe->state == NGHTTP2_IB_IGN_DATA) { |
6575 | 0 | return (ssize_t)inlen; |
6576 | 0 | } |
6577 | 0 | } |
6578 | | |
6579 | 0 | rv = nghttp2_session_add_rst_stream( |
6580 | 0 | session, iframe->frame.hd.stream_id, NGHTTP2_PROTOCOL_ERROR); |
6581 | 0 | if (nghttp2_is_fatal(rv)) { |
6582 | 0 | return rv; |
6583 | 0 | } |
6584 | 0 | busy = 1; |
6585 | 0 | iframe->state = NGHTTP2_IB_IGN_DATA; |
6586 | 0 | break; |
6587 | 0 | } |
6588 | 0 | } |
6589 | 0 | if (session->callbacks.on_data_chunk_recv_callback) { |
6590 | 0 | rv = session->callbacks.on_data_chunk_recv_callback( |
6591 | 0 | session, iframe->frame.hd.flags, iframe->frame.hd.stream_id, |
6592 | 0 | in - readlen, (size_t)data_readlen, session->user_data); |
6593 | 0 | if (rv == NGHTTP2_ERR_PAUSE) { |
6594 | 0 | return in - first; |
6595 | 0 | } |
6596 | | |
6597 | 0 | if (nghttp2_is_fatal(rv)) { |
6598 | 0 | return NGHTTP2_ERR_CALLBACK_FAILURE; |
6599 | 0 | } |
6600 | 0 | } |
6601 | 0 | } |
6602 | 0 | } |
6603 | | |
6604 | 0 | if (iframe->payloadleft) { |
6605 | 0 | break; |
6606 | 0 | } |
6607 | | |
6608 | 0 | rv = session_process_data_frame(session); |
6609 | 0 | if (nghttp2_is_fatal(rv)) { |
6610 | 0 | return rv; |
6611 | 0 | } |
6612 | | |
6613 | 0 | session_inbound_frame_reset(session); |
6614 | |
|
6615 | 0 | break; |
6616 | 0 | case NGHTTP2_IB_IGN_DATA: |
6617 | 0 | DEBUGF("recv: [IB_IGN_DATA]\n"); |
6618 | |
|
6619 | 0 | readlen = inbound_frame_payload_readlen(iframe, in, last); |
6620 | 0 | iframe->payloadleft -= readlen; |
6621 | 0 | in += readlen; |
6622 | |
|
6623 | 0 | DEBUGF("recv: readlen=%zu, payloadleft=%zu\n", readlen, |
6624 | 0 | iframe->payloadleft); |
6625 | |
|
6626 | 0 | if (readlen > 0) { |
6627 | | /* Update connection-level flow control window for ignored |
6628 | | DATA frame too */ |
6629 | 0 | rv = nghttp2_session_update_recv_connection_window_size(session, |
6630 | 0 | readlen); |
6631 | 0 | if (nghttp2_is_fatal(rv)) { |
6632 | 0 | return rv; |
6633 | 0 | } |
6634 | | |
6635 | 0 | if (iframe->state == NGHTTP2_IB_IGN_ALL) { |
6636 | 0 | return (ssize_t)inlen; |
6637 | 0 | } |
6638 | | |
6639 | 0 | if (session->opt_flags & NGHTTP2_OPTMASK_NO_AUTO_WINDOW_UPDATE) { |
6640 | | |
6641 | | /* Ignored DATA is considered as "consumed" immediately. */ |
6642 | 0 | rv = session_update_connection_consumed_size(session, readlen); |
6643 | |
|
6644 | 0 | if (nghttp2_is_fatal(rv)) { |
6645 | 0 | return rv; |
6646 | 0 | } |
6647 | | |
6648 | 0 | if (iframe->state == NGHTTP2_IB_IGN_ALL) { |
6649 | 0 | return (ssize_t)inlen; |
6650 | 0 | } |
6651 | 0 | } |
6652 | 0 | } |
6653 | | |
6654 | 0 | if (iframe->payloadleft) { |
6655 | 0 | break; |
6656 | 0 | } |
6657 | | |
6658 | 0 | session_inbound_frame_reset(session); |
6659 | |
|
6660 | 0 | break; |
6661 | 0 | case NGHTTP2_IB_IGN_ALL: |
6662 | 0 | return (ssize_t)inlen; |
6663 | 0 | case NGHTTP2_IB_READ_EXTENSION_PAYLOAD: |
6664 | 0 | DEBUGF("recv: [IB_READ_EXTENSION_PAYLOAD]\n"); |
6665 | |
|
6666 | 0 | readlen = inbound_frame_payload_readlen(iframe, in, last); |
6667 | 0 | iframe->payloadleft -= readlen; |
6668 | 0 | in += readlen; |
6669 | |
|
6670 | 0 | DEBUGF("recv: readlen=%zu, payloadleft=%zu\n", readlen, |
6671 | 0 | iframe->payloadleft); |
6672 | |
|
6673 | 0 | if (readlen > 0) { |
6674 | 0 | rv = session_call_on_extension_chunk_recv_callback( |
6675 | 0 | session, in - readlen, readlen); |
6676 | 0 | if (nghttp2_is_fatal(rv)) { |
6677 | 0 | return rv; |
6678 | 0 | } |
6679 | | |
6680 | 0 | if (rv != 0) { |
6681 | 0 | busy = 1; |
6682 | |
|
6683 | 0 | iframe->state = NGHTTP2_IB_IGN_PAYLOAD; |
6684 | |
|
6685 | 0 | break; |
6686 | 0 | } |
6687 | 0 | } |
6688 | | |
6689 | 0 | if (iframe->payloadleft > 0) { |
6690 | 0 | break; |
6691 | 0 | } |
6692 | | |
6693 | 0 | rv = session_process_extension_frame(session); |
6694 | 0 | if (nghttp2_is_fatal(rv)) { |
6695 | 0 | return rv; |
6696 | 0 | } |
6697 | | |
6698 | 0 | session_inbound_frame_reset(session); |
6699 | |
|
6700 | 0 | break; |
6701 | 0 | case NGHTTP2_IB_READ_ALTSVC_PAYLOAD: |
6702 | 0 | DEBUGF("recv: [IB_READ_ALTSVC_PAYLOAD]\n"); |
6703 | |
|
6704 | 0 | readlen = inbound_frame_payload_readlen(iframe, in, last); |
6705 | 0 | if (readlen > 0) { |
6706 | 0 | iframe->lbuf.last = nghttp2_cpymem(iframe->lbuf.last, in, readlen); |
6707 | |
|
6708 | 0 | iframe->payloadleft -= readlen; |
6709 | 0 | in += readlen; |
6710 | 0 | } |
6711 | |
|
6712 | 0 | DEBUGF("recv: readlen=%zu, payloadleft=%zu\n", readlen, |
6713 | 0 | iframe->payloadleft); |
6714 | |
|
6715 | 0 | if (iframe->payloadleft) { |
6716 | 0 | assert(nghttp2_buf_avail(&iframe->lbuf) > 0); |
6717 | | |
6718 | 0 | break; |
6719 | 0 | } |
6720 | | |
6721 | 0 | rv = session_process_altsvc_frame(session); |
6722 | 0 | if (nghttp2_is_fatal(rv)) { |
6723 | 0 | return rv; |
6724 | 0 | } |
6725 | | |
6726 | 0 | session_inbound_frame_reset(session); |
6727 | |
|
6728 | 0 | break; |
6729 | 0 | case NGHTTP2_IB_READ_ORIGIN_PAYLOAD: |
6730 | 0 | DEBUGF("recv: [IB_READ_ORIGIN_PAYLOAD]\n"); |
6731 | |
|
6732 | 0 | readlen = inbound_frame_payload_readlen(iframe, in, last); |
6733 | |
|
6734 | 0 | if (readlen > 0) { |
6735 | 0 | iframe->lbuf.last = nghttp2_cpymem(iframe->lbuf.last, in, readlen); |
6736 | |
|
6737 | 0 | iframe->payloadleft -= readlen; |
6738 | 0 | in += readlen; |
6739 | 0 | } |
6740 | |
|
6741 | 0 | DEBUGF("recv: readlen=%zu, payloadleft=%zu\n", readlen, |
6742 | 0 | iframe->payloadleft); |
6743 | |
|
6744 | 0 | if (iframe->payloadleft) { |
6745 | 0 | assert(nghttp2_buf_avail(&iframe->lbuf) > 0); |
6746 | | |
6747 | 0 | break; |
6748 | 0 | } |
6749 | | |
6750 | 0 | rv = session_process_origin_frame(session); |
6751 | |
|
6752 | 0 | if (nghttp2_is_fatal(rv)) { |
6753 | 0 | return rv; |
6754 | 0 | } |
6755 | | |
6756 | 0 | if (iframe->state == NGHTTP2_IB_IGN_ALL) { |
6757 | 0 | return (ssize_t)inlen; |
6758 | 0 | } |
6759 | | |
6760 | 0 | session_inbound_frame_reset(session); |
6761 | |
|
6762 | 0 | break; |
6763 | 0 | } |
6764 | | |
6765 | 0 | if (!busy && in == last) { |
6766 | 0 | break; |
6767 | 0 | } |
6768 | | |
6769 | 0 | busy = 0; |
6770 | 0 | } |
6771 | | |
6772 | 0 | assert(in == last); |
6773 | | |
6774 | 0 | return in - first; |
6775 | 0 | } |
6776 | | |
6777 | 0 | int nghttp2_session_recv(nghttp2_session *session) { |
6778 | 0 | uint8_t buf[NGHTTP2_INBOUND_BUFFER_LENGTH]; |
6779 | 0 | while (1) { |
6780 | 0 | ssize_t readlen; |
6781 | 0 | readlen = session_recv(session, buf, sizeof(buf)); |
6782 | 0 | if (readlen > 0) { |
6783 | 0 | ssize_t proclen = nghttp2_session_mem_recv(session, buf, (size_t)readlen); |
6784 | 0 | if (proclen < 0) { |
6785 | 0 | return (int)proclen; |
6786 | 0 | } |
6787 | 0 | assert(proclen == readlen); |
6788 | 0 | } else if (readlen == 0 || readlen == NGHTTP2_ERR_WOULDBLOCK) { |
6789 | 0 | return 0; |
6790 | 0 | } else if (readlen == NGHTTP2_ERR_EOF) { |
6791 | 0 | return NGHTTP2_ERR_EOF; |
6792 | 0 | } else if (readlen < 0) { |
6793 | 0 | return NGHTTP2_ERR_CALLBACK_FAILURE; |
6794 | 0 | } |
6795 | 0 | } |
6796 | 0 | } |
6797 | | |
6798 | | /* |
6799 | | * Returns the number of active streams, which includes streams in |
6800 | | * reserved state. |
6801 | | */ |
6802 | 0 | static size_t session_get_num_active_streams(nghttp2_session *session) { |
6803 | 0 | return nghttp2_map_size(&session->streams) - session->num_closed_streams - |
6804 | 0 | session->num_idle_streams; |
6805 | 0 | } |
6806 | | |
6807 | 0 | int nghttp2_session_want_read(nghttp2_session *session) { |
6808 | 0 | size_t num_active_streams; |
6809 | | |
6810 | | /* If this flag is set, we don't want to read. The application |
6811 | | should drop the connection. */ |
6812 | 0 | if (session->goaway_flags & NGHTTP2_GOAWAY_TERM_SENT) { |
6813 | 0 | return 0; |
6814 | 0 | } |
6815 | | |
6816 | 0 | num_active_streams = session_get_num_active_streams(session); |
6817 | | |
6818 | | /* Unless termination GOAWAY is sent or received, we always want to |
6819 | | read incoming frames. */ |
6820 | |
|
6821 | 0 | if (num_active_streams > 0) { |
6822 | 0 | return 1; |
6823 | 0 | } |
6824 | | |
6825 | | /* If there is no active streams and GOAWAY has been sent or |
6826 | | received, we are done with this session. */ |
6827 | 0 | return (session->goaway_flags & |
6828 | 0 | (NGHTTP2_GOAWAY_SENT | NGHTTP2_GOAWAY_RECV)) == 0; |
6829 | 0 | } |
6830 | | |
6831 | 0 | int nghttp2_session_want_write(nghttp2_session *session) { |
6832 | | /* If these flag is set, we don't want to write any data. The |
6833 | | application should drop the connection. */ |
6834 | 0 | if (session->goaway_flags & NGHTTP2_GOAWAY_TERM_SENT) { |
6835 | 0 | return 0; |
6836 | 0 | } |
6837 | | |
6838 | | /* |
6839 | | * Unless termination GOAWAY is sent or received, we want to write |
6840 | | * frames if there is pending ones. If pending frame is request/push |
6841 | | * response HEADERS and concurrent stream limit is reached, we don't |
6842 | | * want to write them. |
6843 | | */ |
6844 | 0 | return session->aob.item || nghttp2_outbound_queue_top(&session->ob_urgent) || |
6845 | 0 | nghttp2_outbound_queue_top(&session->ob_reg) || |
6846 | 0 | (!nghttp2_pq_empty(&session->root.obq) && |
6847 | 0 | session->remote_window_size > 0) || |
6848 | 0 | (nghttp2_outbound_queue_top(&session->ob_syn) && |
6849 | 0 | !session_is_outgoing_concurrent_streams_max(session)); |
6850 | 0 | } |
6851 | | |
6852 | | int nghttp2_session_add_ping(nghttp2_session *session, uint8_t flags, |
6853 | 0 | const uint8_t *opaque_data) { |
6854 | 0 | int rv; |
6855 | 0 | nghttp2_outbound_item *item; |
6856 | 0 | nghttp2_frame *frame; |
6857 | 0 | nghttp2_mem *mem; |
6858 | |
|
6859 | 0 | mem = &session->mem; |
6860 | |
|
6861 | 0 | if ((flags & NGHTTP2_FLAG_ACK) && |
6862 | 0 | session->obq_flood_counter_ >= session->max_outbound_ack) { |
6863 | 0 | return NGHTTP2_ERR_FLOODED; |
6864 | 0 | } |
6865 | | |
6866 | 0 | item = nghttp2_mem_malloc(mem, sizeof(nghttp2_outbound_item)); |
6867 | 0 | if (item == NULL) { |
6868 | 0 | return NGHTTP2_ERR_NOMEM; |
6869 | 0 | } |
6870 | | |
6871 | 0 | nghttp2_outbound_item_init(item); |
6872 | |
|
6873 | 0 | frame = &item->frame; |
6874 | |
|
6875 | 0 | nghttp2_frame_ping_init(&frame->ping, flags, opaque_data); |
6876 | |
|
6877 | 0 | rv = nghttp2_session_add_item(session, item); |
6878 | |
|
6879 | 0 | if (rv != 0) { |
6880 | 0 | nghttp2_frame_ping_free(&frame->ping); |
6881 | 0 | nghttp2_mem_free(mem, item); |
6882 | 0 | return rv; |
6883 | 0 | } |
6884 | | |
6885 | 0 | if (flags & NGHTTP2_FLAG_ACK) { |
6886 | 0 | ++session->obq_flood_counter_; |
6887 | 0 | } |
6888 | |
|
6889 | 0 | return 0; |
6890 | 0 | } |
6891 | | |
6892 | | int nghttp2_session_add_goaway(nghttp2_session *session, int32_t last_stream_id, |
6893 | | uint32_t error_code, const uint8_t *opaque_data, |
6894 | 0 | size_t opaque_data_len, uint8_t aux_flags) { |
6895 | 0 | int rv; |
6896 | 0 | nghttp2_outbound_item *item; |
6897 | 0 | nghttp2_frame *frame; |
6898 | 0 | uint8_t *opaque_data_copy = NULL; |
6899 | 0 | nghttp2_goaway_aux_data *aux_data; |
6900 | 0 | nghttp2_mem *mem; |
6901 | |
|
6902 | 0 | mem = &session->mem; |
6903 | |
|
6904 | 0 | if (nghttp2_session_is_my_stream_id(session, last_stream_id)) { |
6905 | 0 | return NGHTTP2_ERR_INVALID_ARGUMENT; |
6906 | 0 | } |
6907 | | |
6908 | 0 | if (opaque_data_len) { |
6909 | 0 | if (opaque_data_len + 8 > NGHTTP2_MAX_PAYLOADLEN) { |
6910 | 0 | return NGHTTP2_ERR_INVALID_ARGUMENT; |
6911 | 0 | } |
6912 | 0 | opaque_data_copy = nghttp2_mem_malloc(mem, opaque_data_len); |
6913 | 0 | if (opaque_data_copy == NULL) { |
6914 | 0 | return NGHTTP2_ERR_NOMEM; |
6915 | 0 | } |
6916 | 0 | memcpy(opaque_data_copy, opaque_data, opaque_data_len); |
6917 | 0 | } |
6918 | | |
6919 | 0 | item = nghttp2_mem_malloc(mem, sizeof(nghttp2_outbound_item)); |
6920 | 0 | if (item == NULL) { |
6921 | 0 | nghttp2_mem_free(mem, opaque_data_copy); |
6922 | 0 | return NGHTTP2_ERR_NOMEM; |
6923 | 0 | } |
6924 | | |
6925 | 0 | nghttp2_outbound_item_init(item); |
6926 | |
|
6927 | 0 | frame = &item->frame; |
6928 | | |
6929 | | /* last_stream_id must not be increased from the value previously |
6930 | | sent */ |
6931 | 0 | last_stream_id = nghttp2_min(last_stream_id, session->local_last_stream_id); |
6932 | |
|
6933 | 0 | nghttp2_frame_goaway_init(&frame->goaway, last_stream_id, error_code, |
6934 | 0 | opaque_data_copy, opaque_data_len); |
6935 | |
|
6936 | 0 | aux_data = &item->aux_data.goaway; |
6937 | 0 | aux_data->flags = aux_flags; |
6938 | |
|
6939 | 0 | rv = nghttp2_session_add_item(session, item); |
6940 | 0 | if (rv != 0) { |
6941 | 0 | nghttp2_frame_goaway_free(&frame->goaway, mem); |
6942 | 0 | nghttp2_mem_free(mem, item); |
6943 | 0 | return rv; |
6944 | 0 | } |
6945 | 0 | return 0; |
6946 | 0 | } |
6947 | | |
6948 | | int nghttp2_session_add_window_update(nghttp2_session *session, uint8_t flags, |
6949 | | int32_t stream_id, |
6950 | 0 | int32_t window_size_increment) { |
6951 | 0 | int rv; |
6952 | 0 | nghttp2_outbound_item *item; |
6953 | 0 | nghttp2_frame *frame; |
6954 | 0 | nghttp2_mem *mem; |
6955 | |
|
6956 | 0 | mem = &session->mem; |
6957 | 0 | item = nghttp2_mem_malloc(mem, sizeof(nghttp2_outbound_item)); |
6958 | 0 | if (item == NULL) { |
6959 | 0 | return NGHTTP2_ERR_NOMEM; |
6960 | 0 | } |
6961 | | |
6962 | 0 | nghttp2_outbound_item_init(item); |
6963 | |
|
6964 | 0 | frame = &item->frame; |
6965 | |
|
6966 | 0 | nghttp2_frame_window_update_init(&frame->window_update, flags, stream_id, |
6967 | 0 | window_size_increment); |
6968 | |
|
6969 | 0 | rv = nghttp2_session_add_item(session, item); |
6970 | |
|
6971 | 0 | if (rv != 0) { |
6972 | 0 | nghttp2_frame_window_update_free(&frame->window_update); |
6973 | 0 | nghttp2_mem_free(mem, item); |
6974 | 0 | return rv; |
6975 | 0 | } |
6976 | 0 | return 0; |
6977 | 0 | } |
6978 | | |
6979 | | static void |
6980 | | session_append_inflight_settings(nghttp2_session *session, |
6981 | 0 | nghttp2_inflight_settings *settings) { |
6982 | 0 | nghttp2_inflight_settings **i; |
6983 | |
|
6984 | 0 | for (i = &session->inflight_settings_head; *i; i = &(*i)->next) |
6985 | 0 | ; |
6986 | |
|
6987 | 0 | *i = settings; |
6988 | 0 | } |
6989 | | |
6990 | | int nghttp2_session_add_settings(nghttp2_session *session, uint8_t flags, |
6991 | 0 | const nghttp2_settings_entry *iv, size_t niv) { |
6992 | 0 | nghttp2_outbound_item *item; |
6993 | 0 | nghttp2_frame *frame; |
6994 | 0 | nghttp2_settings_entry *iv_copy; |
6995 | 0 | size_t i; |
6996 | 0 | int rv; |
6997 | 0 | nghttp2_mem *mem; |
6998 | 0 | nghttp2_inflight_settings *inflight_settings = NULL; |
6999 | |
|
7000 | 0 | mem = &session->mem; |
7001 | |
|
7002 | 0 | if (flags & NGHTTP2_FLAG_ACK) { |
7003 | 0 | if (niv != 0) { |
7004 | 0 | return NGHTTP2_ERR_INVALID_ARGUMENT; |
7005 | 0 | } |
7006 | | |
7007 | 0 | if (session->obq_flood_counter_ >= session->max_outbound_ack) { |
7008 | 0 | return NGHTTP2_ERR_FLOODED; |
7009 | 0 | } |
7010 | 0 | } |
7011 | | |
7012 | 0 | if (!nghttp2_iv_check(iv, niv)) { |
7013 | 0 | return NGHTTP2_ERR_INVALID_ARGUMENT; |
7014 | 0 | } |
7015 | | |
7016 | 0 | item = nghttp2_mem_malloc(mem, sizeof(nghttp2_outbound_item)); |
7017 | 0 | if (item == NULL) { |
7018 | 0 | return NGHTTP2_ERR_NOMEM; |
7019 | 0 | } |
7020 | | |
7021 | 0 | if (niv > 0) { |
7022 | 0 | iv_copy = nghttp2_frame_iv_copy(iv, niv, mem); |
7023 | 0 | if (iv_copy == NULL) { |
7024 | 0 | nghttp2_mem_free(mem, item); |
7025 | 0 | return NGHTTP2_ERR_NOMEM; |
7026 | 0 | } |
7027 | 0 | } else { |
7028 | 0 | iv_copy = NULL; |
7029 | 0 | } |
7030 | | |
7031 | 0 | if ((flags & NGHTTP2_FLAG_ACK) == 0) { |
7032 | 0 | rv = inflight_settings_new(&inflight_settings, iv, niv, mem); |
7033 | 0 | if (rv != 0) { |
7034 | 0 | assert(nghttp2_is_fatal(rv)); |
7035 | 0 | nghttp2_mem_free(mem, iv_copy); |
7036 | 0 | nghttp2_mem_free(mem, item); |
7037 | 0 | return rv; |
7038 | 0 | } |
7039 | 0 | } |
7040 | | |
7041 | 0 | nghttp2_outbound_item_init(item); |
7042 | |
|
7043 | 0 | frame = &item->frame; |
7044 | |
|
7045 | 0 | nghttp2_frame_settings_init(&frame->settings, flags, iv_copy, niv); |
7046 | 0 | rv = nghttp2_session_add_item(session, item); |
7047 | 0 | if (rv != 0) { |
7048 | | /* The only expected error is fatal one */ |
7049 | 0 | assert(nghttp2_is_fatal(rv)); |
7050 | | |
7051 | 0 | inflight_settings_del(inflight_settings, mem); |
7052 | |
|
7053 | 0 | nghttp2_frame_settings_free(&frame->settings, mem); |
7054 | 0 | nghttp2_mem_free(mem, item); |
7055 | |
|
7056 | 0 | return rv; |
7057 | 0 | } |
7058 | | |
7059 | 0 | if (flags & NGHTTP2_FLAG_ACK) { |
7060 | 0 | ++session->obq_flood_counter_; |
7061 | 0 | } else { |
7062 | 0 | session_append_inflight_settings(session, inflight_settings); |
7063 | 0 | } |
7064 | | |
7065 | | /* Extract NGHTTP2_SETTINGS_MAX_CONCURRENT_STREAMS and ENABLE_PUSH |
7066 | | here. We use it to refuse the incoming stream and PUSH_PROMISE |
7067 | | with RST_STREAM. */ |
7068 | |
|
7069 | 0 | for (i = niv; i > 0; --i) { |
7070 | 0 | if (iv[i - 1].settings_id == NGHTTP2_SETTINGS_MAX_CONCURRENT_STREAMS) { |
7071 | 0 | session->pending_local_max_concurrent_stream = iv[i - 1].value; |
7072 | 0 | break; |
7073 | 0 | } |
7074 | 0 | } |
7075 | |
|
7076 | 0 | for (i = niv; i > 0; --i) { |
7077 | 0 | if (iv[i - 1].settings_id == NGHTTP2_SETTINGS_ENABLE_PUSH) { |
7078 | 0 | session->pending_enable_push = (uint8_t)iv[i - 1].value; |
7079 | 0 | break; |
7080 | 0 | } |
7081 | 0 | } |
7082 | |
|
7083 | 0 | for (i = niv; i > 0; --i) { |
7084 | 0 | if (iv[i - 1].settings_id == NGHTTP2_SETTINGS_ENABLE_CONNECT_PROTOCOL) { |
7085 | 0 | session->pending_enable_connect_protocol = (uint8_t)iv[i - 1].value; |
7086 | 0 | break; |
7087 | 0 | } |
7088 | 0 | } |
7089 | |
|
7090 | 0 | return 0; |
7091 | 0 | } |
7092 | | |
7093 | | int nghttp2_session_pack_data(nghttp2_session *session, nghttp2_bufs *bufs, |
7094 | | size_t datamax, nghttp2_frame *frame, |
7095 | | nghttp2_data_aux_data *aux_data, |
7096 | 0 | nghttp2_stream *stream) { |
7097 | 0 | int rv; |
7098 | 0 | uint32_t data_flags; |
7099 | 0 | ssize_t payloadlen; |
7100 | 0 | ssize_t padded_payloadlen; |
7101 | 0 | nghttp2_buf *buf; |
7102 | 0 | size_t max_payloadlen; |
7103 | |
|
7104 | 0 | assert(bufs->head == bufs->cur); |
7105 | | |
7106 | 0 | buf = &bufs->cur->buf; |
7107 | |
|
7108 | 0 | if (session->callbacks.read_length_callback) { |
7109 | |
|
7110 | 0 | payloadlen = session->callbacks.read_length_callback( |
7111 | 0 | session, frame->hd.type, stream->stream_id, session->remote_window_size, |
7112 | 0 | stream->remote_window_size, session->remote_settings.max_frame_size, |
7113 | 0 | session->user_data); |
7114 | |
|
7115 | 0 | DEBUGF("send: read_length_callback=%zd\n", payloadlen); |
7116 | |
|
7117 | 0 | payloadlen = nghttp2_session_enforce_flow_control_limits(session, stream, |
7118 | 0 | payloadlen); |
7119 | |
|
7120 | 0 | DEBUGF("send: read_length_callback after flow control=%zd\n", payloadlen); |
7121 | |
|
7122 | 0 | if (payloadlen <= 0) { |
7123 | 0 | return NGHTTP2_ERR_CALLBACK_FAILURE; |
7124 | 0 | } |
7125 | | |
7126 | 0 | if ((size_t)payloadlen > nghttp2_buf_avail(buf)) { |
7127 | | /* Resize the current buffer(s). The reason why we do +1 for |
7128 | | buffer size is for possible padding field. */ |
7129 | 0 | rv = nghttp2_bufs_realloc(&session->aob.framebufs, |
7130 | 0 | (size_t)(NGHTTP2_FRAME_HDLEN + 1 + payloadlen)); |
7131 | |
|
7132 | 0 | if (rv != 0) { |
7133 | 0 | DEBUGF("send: realloc buffer failed rv=%d", rv); |
7134 | | /* If reallocation failed, old buffers are still in tact. So |
7135 | | use safe limit. */ |
7136 | 0 | payloadlen = (ssize_t)datamax; |
7137 | |
|
7138 | 0 | DEBUGF("send: use safe limit payloadlen=%zd", payloadlen); |
7139 | 0 | } else { |
7140 | 0 | assert(&session->aob.framebufs == bufs); |
7141 | | |
7142 | 0 | buf = &bufs->cur->buf; |
7143 | 0 | } |
7144 | 0 | } |
7145 | 0 | datamax = (size_t)payloadlen; |
7146 | 0 | } |
7147 | | |
7148 | | /* Current max DATA length is less then buffer chunk size */ |
7149 | 0 | assert(nghttp2_buf_avail(buf) >= datamax); |
7150 | | |
7151 | 0 | data_flags = NGHTTP2_DATA_FLAG_NONE; |
7152 | 0 | payloadlen = aux_data->data_prd.read_callback( |
7153 | 0 | session, frame->hd.stream_id, buf->pos, datamax, &data_flags, |
7154 | 0 | &aux_data->data_prd.source, session->user_data); |
7155 | |
|
7156 | 0 | if (payloadlen == NGHTTP2_ERR_DEFERRED || |
7157 | 0 | payloadlen == NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE || |
7158 | 0 | payloadlen == NGHTTP2_ERR_PAUSE) { |
7159 | 0 | DEBUGF("send: DATA postponed due to %s\n", |
7160 | 0 | nghttp2_strerror((int)payloadlen)); |
7161 | |
|
7162 | 0 | return (int)payloadlen; |
7163 | 0 | } |
7164 | | |
7165 | 0 | if (payloadlen < 0 || datamax < (size_t)payloadlen) { |
7166 | | /* This is the error code when callback is failed. */ |
7167 | 0 | return NGHTTP2_ERR_CALLBACK_FAILURE; |
7168 | 0 | } |
7169 | | |
7170 | 0 | buf->last = buf->pos + payloadlen; |
7171 | 0 | buf->pos -= NGHTTP2_FRAME_HDLEN; |
7172 | | |
7173 | | /* Clear flags, because this may contain previous flags of previous |
7174 | | DATA */ |
7175 | 0 | frame->hd.flags = NGHTTP2_FLAG_NONE; |
7176 | |
|
7177 | 0 | if (data_flags & NGHTTP2_DATA_FLAG_EOF) { |
7178 | 0 | aux_data->eof = 1; |
7179 | | /* If NGHTTP2_DATA_FLAG_NO_END_STREAM is set, don't set |
7180 | | NGHTTP2_FLAG_END_STREAM */ |
7181 | 0 | if ((aux_data->flags & NGHTTP2_FLAG_END_STREAM) && |
7182 | 0 | (data_flags & NGHTTP2_DATA_FLAG_NO_END_STREAM) == 0) { |
7183 | 0 | frame->hd.flags |= NGHTTP2_FLAG_END_STREAM; |
7184 | 0 | } |
7185 | 0 | } |
7186 | |
|
7187 | 0 | if (data_flags & NGHTTP2_DATA_FLAG_NO_COPY) { |
7188 | 0 | if (session->callbacks.send_data_callback == NULL) { |
7189 | 0 | DEBUGF("NGHTTP2_DATA_FLAG_NO_COPY requires send_data_callback set\n"); |
7190 | |
|
7191 | 0 | return NGHTTP2_ERR_CALLBACK_FAILURE; |
7192 | 0 | } |
7193 | 0 | aux_data->no_copy = 1; |
7194 | 0 | } |
7195 | | |
7196 | 0 | frame->hd.length = (size_t)payloadlen; |
7197 | 0 | frame->data.padlen = 0; |
7198 | |
|
7199 | 0 | max_payloadlen = nghttp2_min(datamax, frame->hd.length + NGHTTP2_MAX_PADLEN); |
7200 | |
|
7201 | 0 | padded_payloadlen = |
7202 | 0 | session_call_select_padding(session, frame, max_payloadlen); |
7203 | |
|
7204 | 0 | if (nghttp2_is_fatal((int)padded_payloadlen)) { |
7205 | 0 | return (int)padded_payloadlen; |
7206 | 0 | } |
7207 | | |
7208 | 0 | frame->data.padlen = (size_t)(padded_payloadlen - payloadlen); |
7209 | |
|
7210 | 0 | nghttp2_frame_pack_frame_hd(buf->pos, &frame->hd); |
7211 | |
|
7212 | 0 | rv = nghttp2_frame_add_pad(bufs, &frame->hd, frame->data.padlen, |
7213 | 0 | aux_data->no_copy); |
7214 | 0 | if (rv != 0) { |
7215 | 0 | return rv; |
7216 | 0 | } |
7217 | | |
7218 | 0 | reschedule_stream(stream); |
7219 | |
|
7220 | 0 | if (frame->hd.length == 0 && (data_flags & NGHTTP2_DATA_FLAG_EOF) && |
7221 | 0 | (data_flags & NGHTTP2_DATA_FLAG_NO_END_STREAM)) { |
7222 | | /* DATA payload length is 0, and DATA frame does not bear |
7223 | | END_STREAM. In this case, there is no point to send 0 length |
7224 | | DATA frame. */ |
7225 | 0 | return NGHTTP2_ERR_CANCEL; |
7226 | 0 | } |
7227 | | |
7228 | 0 | return 0; |
7229 | 0 | } |
7230 | | |
7231 | | void *nghttp2_session_get_stream_user_data(nghttp2_session *session, |
7232 | 0 | int32_t stream_id) { |
7233 | 0 | nghttp2_stream *stream; |
7234 | 0 | stream = nghttp2_session_get_stream(session, stream_id); |
7235 | 0 | if (stream) { |
7236 | 0 | return stream->stream_user_data; |
7237 | 0 | } else { |
7238 | 0 | return NULL; |
7239 | 0 | } |
7240 | 0 | } |
7241 | | |
7242 | | int nghttp2_session_set_stream_user_data(nghttp2_session *session, |
7243 | | int32_t stream_id, |
7244 | 0 | void *stream_user_data) { |
7245 | 0 | nghttp2_stream *stream; |
7246 | 0 | nghttp2_frame *frame; |
7247 | 0 | nghttp2_outbound_item *item; |
7248 | |
|
7249 | 0 | stream = nghttp2_session_get_stream(session, stream_id); |
7250 | 0 | if (stream) { |
7251 | 0 | stream->stream_user_data = stream_user_data; |
7252 | 0 | return 0; |
7253 | 0 | } |
7254 | | |
7255 | 0 | if (session->server || !nghttp2_session_is_my_stream_id(session, stream_id) || |
7256 | 0 | !nghttp2_outbound_queue_top(&session->ob_syn)) { |
7257 | 0 | return NGHTTP2_ERR_INVALID_ARGUMENT; |
7258 | 0 | } |
7259 | | |
7260 | 0 | frame = &nghttp2_outbound_queue_top(&session->ob_syn)->frame; |
7261 | 0 | assert(frame->hd.type == NGHTTP2_HEADERS); |
7262 | | |
7263 | 0 | if (frame->hd.stream_id > stream_id || |
7264 | 0 | (uint32_t)stream_id >= session->next_stream_id) { |
7265 | 0 | return NGHTTP2_ERR_INVALID_ARGUMENT; |
7266 | 0 | } |
7267 | | |
7268 | 0 | for (item = session->ob_syn.head; item; item = item->qnext) { |
7269 | 0 | if (item->frame.hd.stream_id < stream_id) { |
7270 | 0 | continue; |
7271 | 0 | } |
7272 | | |
7273 | 0 | if (item->frame.hd.stream_id > stream_id) { |
7274 | 0 | break; |
7275 | 0 | } |
7276 | | |
7277 | 0 | item->aux_data.headers.stream_user_data = stream_user_data; |
7278 | 0 | return 0; |
7279 | 0 | } |
7280 | | |
7281 | 0 | return NGHTTP2_ERR_INVALID_ARGUMENT; |
7282 | 0 | } |
7283 | | |
7284 | 0 | int nghttp2_session_resume_data(nghttp2_session *session, int32_t stream_id) { |
7285 | 0 | int rv; |
7286 | 0 | nghttp2_stream *stream; |
7287 | 0 | stream = nghttp2_session_get_stream(session, stream_id); |
7288 | 0 | if (stream == NULL || !nghttp2_stream_check_deferred_item(stream)) { |
7289 | 0 | return NGHTTP2_ERR_INVALID_ARGUMENT; |
7290 | 0 | } |
7291 | | |
7292 | 0 | rv = nghttp2_stream_resume_deferred_item(stream, |
7293 | 0 | NGHTTP2_STREAM_FLAG_DEFERRED_USER); |
7294 | |
|
7295 | 0 | if (nghttp2_is_fatal(rv)) { |
7296 | 0 | return rv; |
7297 | 0 | } |
7298 | | |
7299 | 0 | return 0; |
7300 | 0 | } |
7301 | | |
7302 | 0 | size_t nghttp2_session_get_outbound_queue_size(nghttp2_session *session) { |
7303 | 0 | return nghttp2_outbound_queue_size(&session->ob_urgent) + |
7304 | 0 | nghttp2_outbound_queue_size(&session->ob_reg) + |
7305 | 0 | nghttp2_outbound_queue_size(&session->ob_syn); |
7306 | | /* TODO account for item attached to stream */ |
7307 | 0 | } |
7308 | | |
7309 | | int32_t |
7310 | | nghttp2_session_get_stream_effective_recv_data_length(nghttp2_session *session, |
7311 | 0 | int32_t stream_id) { |
7312 | 0 | nghttp2_stream *stream; |
7313 | 0 | stream = nghttp2_session_get_stream(session, stream_id); |
7314 | 0 | if (stream == NULL) { |
7315 | 0 | return -1; |
7316 | 0 | } |
7317 | 0 | return stream->recv_window_size < 0 ? 0 : stream->recv_window_size; |
7318 | 0 | } |
7319 | | |
7320 | | int32_t |
7321 | | nghttp2_session_get_stream_effective_local_window_size(nghttp2_session *session, |
7322 | 0 | int32_t stream_id) { |
7323 | 0 | nghttp2_stream *stream; |
7324 | 0 | stream = nghttp2_session_get_stream(session, stream_id); |
7325 | 0 | if (stream == NULL) { |
7326 | 0 | return -1; |
7327 | 0 | } |
7328 | 0 | return stream->local_window_size; |
7329 | 0 | } |
7330 | | |
7331 | | int32_t nghttp2_session_get_stream_local_window_size(nghttp2_session *session, |
7332 | 0 | int32_t stream_id) { |
7333 | 0 | nghttp2_stream *stream; |
7334 | 0 | int32_t size; |
7335 | 0 | stream = nghttp2_session_get_stream(session, stream_id); |
7336 | 0 | if (stream == NULL) { |
7337 | 0 | return -1; |
7338 | 0 | } |
7339 | | |
7340 | 0 | size = stream->local_window_size - stream->recv_window_size; |
7341 | | |
7342 | | /* size could be negative if local endpoint reduced |
7343 | | SETTINGS_INITIAL_WINDOW_SIZE */ |
7344 | 0 | if (size < 0) { |
7345 | 0 | return 0; |
7346 | 0 | } |
7347 | | |
7348 | 0 | return size; |
7349 | 0 | } |
7350 | | |
7351 | | int32_t |
7352 | 0 | nghttp2_session_get_effective_recv_data_length(nghttp2_session *session) { |
7353 | 0 | return session->recv_window_size < 0 ? 0 : session->recv_window_size; |
7354 | 0 | } |
7355 | | |
7356 | | int32_t |
7357 | 0 | nghttp2_session_get_effective_local_window_size(nghttp2_session *session) { |
7358 | 0 | return session->local_window_size; |
7359 | 0 | } |
7360 | | |
7361 | 0 | int32_t nghttp2_session_get_local_window_size(nghttp2_session *session) { |
7362 | 0 | return session->local_window_size - session->recv_window_size; |
7363 | 0 | } |
7364 | | |
7365 | | int32_t nghttp2_session_get_stream_remote_window_size(nghttp2_session *session, |
7366 | 0 | int32_t stream_id) { |
7367 | 0 | nghttp2_stream *stream; |
7368 | |
|
7369 | 0 | stream = nghttp2_session_get_stream(session, stream_id); |
7370 | 0 | if (stream == NULL) { |
7371 | 0 | return -1; |
7372 | 0 | } |
7373 | | |
7374 | | /* stream->remote_window_size can be negative when |
7375 | | SETTINGS_INITIAL_WINDOW_SIZE is changed. */ |
7376 | 0 | return nghttp2_max(0, stream->remote_window_size); |
7377 | 0 | } |
7378 | | |
7379 | 0 | int32_t nghttp2_session_get_remote_window_size(nghttp2_session *session) { |
7380 | 0 | return session->remote_window_size; |
7381 | 0 | } |
7382 | | |
7383 | | uint32_t nghttp2_session_get_remote_settings(nghttp2_session *session, |
7384 | 0 | nghttp2_settings_id id) { |
7385 | 0 | switch (id) { |
7386 | 0 | case NGHTTP2_SETTINGS_HEADER_TABLE_SIZE: |
7387 | 0 | return session->remote_settings.header_table_size; |
7388 | 0 | case NGHTTP2_SETTINGS_ENABLE_PUSH: |
7389 | 0 | return session->remote_settings.enable_push; |
7390 | 0 | case NGHTTP2_SETTINGS_MAX_CONCURRENT_STREAMS: |
7391 | 0 | return session->remote_settings.max_concurrent_streams; |
7392 | 0 | case NGHTTP2_SETTINGS_INITIAL_WINDOW_SIZE: |
7393 | 0 | return session->remote_settings.initial_window_size; |
7394 | 0 | case NGHTTP2_SETTINGS_MAX_FRAME_SIZE: |
7395 | 0 | return session->remote_settings.max_frame_size; |
7396 | 0 | case NGHTTP2_SETTINGS_MAX_HEADER_LIST_SIZE: |
7397 | 0 | return session->remote_settings.max_header_list_size; |
7398 | 0 | case NGHTTP2_SETTINGS_ENABLE_CONNECT_PROTOCOL: |
7399 | 0 | return session->remote_settings.enable_connect_protocol; |
7400 | 0 | } |
7401 | | |
7402 | 0 | assert(0); |
7403 | 0 | abort(); /* if NDEBUG is set */ |
7404 | 0 | } |
7405 | | |
7406 | | uint32_t nghttp2_session_get_local_settings(nghttp2_session *session, |
7407 | 0 | nghttp2_settings_id id) { |
7408 | 0 | switch (id) { |
7409 | 0 | case NGHTTP2_SETTINGS_HEADER_TABLE_SIZE: |
7410 | 0 | return session->local_settings.header_table_size; |
7411 | 0 | case NGHTTP2_SETTINGS_ENABLE_PUSH: |
7412 | 0 | return session->local_settings.enable_push; |
7413 | 0 | case NGHTTP2_SETTINGS_MAX_CONCURRENT_STREAMS: |
7414 | 0 | return session->local_settings.max_concurrent_streams; |
7415 | 0 | case NGHTTP2_SETTINGS_INITIAL_WINDOW_SIZE: |
7416 | 0 | return session->local_settings.initial_window_size; |
7417 | 0 | case NGHTTP2_SETTINGS_MAX_FRAME_SIZE: |
7418 | 0 | return session->local_settings.max_frame_size; |
7419 | 0 | case NGHTTP2_SETTINGS_MAX_HEADER_LIST_SIZE: |
7420 | 0 | return session->local_settings.max_header_list_size; |
7421 | 0 | case NGHTTP2_SETTINGS_ENABLE_CONNECT_PROTOCOL: |
7422 | 0 | return session->local_settings.enable_connect_protocol; |
7423 | 0 | } |
7424 | | |
7425 | 0 | assert(0); |
7426 | 0 | abort(); /* if NDEBUG is set */ |
7427 | 0 | } |
7428 | | |
7429 | | static int nghttp2_session_upgrade_internal(nghttp2_session *session, |
7430 | | const uint8_t *settings_payload, |
7431 | | size_t settings_payloadlen, |
7432 | 0 | void *stream_user_data) { |
7433 | 0 | nghttp2_stream *stream; |
7434 | 0 | nghttp2_frame frame; |
7435 | 0 | nghttp2_settings_entry *iv; |
7436 | 0 | size_t niv; |
7437 | 0 | int rv; |
7438 | 0 | nghttp2_priority_spec pri_spec; |
7439 | 0 | nghttp2_mem *mem; |
7440 | |
|
7441 | 0 | mem = &session->mem; |
7442 | |
|
7443 | 0 | if ((!session->server && session->next_stream_id != 1) || |
7444 | 0 | (session->server && session->last_recv_stream_id >= 1)) { |
7445 | 0 | return NGHTTP2_ERR_PROTO; |
7446 | 0 | } |
7447 | 0 | if (settings_payloadlen % NGHTTP2_FRAME_SETTINGS_ENTRY_LENGTH) { |
7448 | 0 | return NGHTTP2_ERR_INVALID_ARGUMENT; |
7449 | 0 | } |
7450 | | /* SETTINGS frame contains too many settings */ |
7451 | 0 | if (settings_payloadlen / NGHTTP2_FRAME_SETTINGS_ENTRY_LENGTH |
7452 | 0 | > session->max_settings) { |
7453 | 0 | return NGHTTP2_ERR_TOO_MANY_SETTINGS; |
7454 | 0 | } |
7455 | 0 | rv = nghttp2_frame_unpack_settings_payload2(&iv, &niv, settings_payload, |
7456 | 0 | settings_payloadlen, mem); |
7457 | 0 | if (rv != 0) { |
7458 | 0 | return rv; |
7459 | 0 | } |
7460 | | |
7461 | 0 | if (session->server) { |
7462 | 0 | nghttp2_frame_hd_init(&frame.hd, settings_payloadlen, NGHTTP2_SETTINGS, |
7463 | 0 | NGHTTP2_FLAG_NONE, 0); |
7464 | 0 | frame.settings.iv = iv; |
7465 | 0 | frame.settings.niv = niv; |
7466 | 0 | rv = nghttp2_session_on_settings_received(session, &frame, 1 /* No ACK */); |
7467 | 0 | } else { |
7468 | 0 | rv = nghttp2_submit_settings(session, NGHTTP2_FLAG_NONE, iv, niv); |
7469 | 0 | } |
7470 | 0 | nghttp2_mem_free(mem, iv); |
7471 | 0 | if (rv != 0) { |
7472 | 0 | return rv; |
7473 | 0 | } |
7474 | | |
7475 | 0 | nghttp2_priority_spec_default_init(&pri_spec); |
7476 | |
|
7477 | 0 | stream = nghttp2_session_open_stream( |
7478 | 0 | session, 1, NGHTTP2_STREAM_FLAG_NONE, &pri_spec, NGHTTP2_STREAM_OPENING, |
7479 | 0 | session->server ? NULL : stream_user_data); |
7480 | 0 | if (stream == NULL) { |
7481 | 0 | return NGHTTP2_ERR_NOMEM; |
7482 | 0 | } |
7483 | | |
7484 | | /* We don't call nghttp2_session_adjust_closed_stream(), since this |
7485 | | should be the first stream open. */ |
7486 | | |
7487 | 0 | if (session->server) { |
7488 | 0 | nghttp2_stream_shutdown(stream, NGHTTP2_SHUT_RD); |
7489 | 0 | session->last_recv_stream_id = 1; |
7490 | 0 | session->last_proc_stream_id = 1; |
7491 | 0 | } else { |
7492 | 0 | nghttp2_stream_shutdown(stream, NGHTTP2_SHUT_WR); |
7493 | 0 | session->last_sent_stream_id = 1; |
7494 | 0 | session->next_stream_id += 2; |
7495 | 0 | } |
7496 | 0 | return 0; |
7497 | 0 | } |
7498 | | |
7499 | | int nghttp2_session_upgrade(nghttp2_session *session, |
7500 | | const uint8_t *settings_payload, |
7501 | | size_t settings_payloadlen, |
7502 | 0 | void *stream_user_data) { |
7503 | 0 | int rv; |
7504 | 0 | nghttp2_stream *stream; |
7505 | |
|
7506 | 0 | rv = nghttp2_session_upgrade_internal(session, settings_payload, |
7507 | 0 | settings_payloadlen, stream_user_data); |
7508 | 0 | if (rv != 0) { |
7509 | 0 | return rv; |
7510 | 0 | } |
7511 | | |
7512 | 0 | stream = nghttp2_session_get_stream(session, 1); |
7513 | 0 | assert(stream); |
7514 | | |
7515 | | /* We have no information about request header fields when Upgrade |
7516 | | was happened. So we don't know the request method here. If |
7517 | | request method is HEAD, we have a trouble because we may have |
7518 | | nonzero content-length header field in response headers, and we |
7519 | | will going to check it against the actual DATA frames, but we may |
7520 | | get mismatch because HEAD response body must be empty. Because |
7521 | | of this reason, nghttp2_session_upgrade() was deprecated in favor |
7522 | | of nghttp2_session_upgrade2(), which has |head_request| parameter |
7523 | | to indicate that request method is HEAD or not. */ |
7524 | 0 | stream->http_flags |= NGHTTP2_HTTP_FLAG_METH_UPGRADE_WORKAROUND; |
7525 | 0 | return 0; |
7526 | 0 | } |
7527 | | |
7528 | | int nghttp2_session_upgrade2(nghttp2_session *session, |
7529 | | const uint8_t *settings_payload, |
7530 | | size_t settings_payloadlen, int head_request, |
7531 | 0 | void *stream_user_data) { |
7532 | 0 | int rv; |
7533 | 0 | nghttp2_stream *stream; |
7534 | |
|
7535 | 0 | rv = nghttp2_session_upgrade_internal(session, settings_payload, |
7536 | 0 | settings_payloadlen, stream_user_data); |
7537 | 0 | if (rv != 0) { |
7538 | 0 | return rv; |
7539 | 0 | } |
7540 | | |
7541 | 0 | stream = nghttp2_session_get_stream(session, 1); |
7542 | 0 | assert(stream); |
7543 | | |
7544 | 0 | if (head_request) { |
7545 | 0 | stream->http_flags |= NGHTTP2_HTTP_FLAG_METH_HEAD; |
7546 | 0 | } |
7547 | |
|
7548 | 0 | return 0; |
7549 | 0 | } |
7550 | | |
7551 | | int nghttp2_session_get_stream_local_close(nghttp2_session *session, |
7552 | 0 | int32_t stream_id) { |
7553 | 0 | nghttp2_stream *stream; |
7554 | |
|
7555 | 0 | stream = nghttp2_session_get_stream(session, stream_id); |
7556 | |
|
7557 | 0 | if (!stream) { |
7558 | 0 | return -1; |
7559 | 0 | } |
7560 | | |
7561 | 0 | return (stream->shut_flags & NGHTTP2_SHUT_WR) != 0; |
7562 | 0 | } |
7563 | | |
7564 | | int nghttp2_session_get_stream_remote_close(nghttp2_session *session, |
7565 | 0 | int32_t stream_id) { |
7566 | 0 | nghttp2_stream *stream; |
7567 | |
|
7568 | 0 | stream = nghttp2_session_get_stream(session, stream_id); |
7569 | |
|
7570 | 0 | if (!stream) { |
7571 | 0 | return -1; |
7572 | 0 | } |
7573 | | |
7574 | 0 | return (stream->shut_flags & NGHTTP2_SHUT_RD) != 0; |
7575 | 0 | } |
7576 | | |
7577 | | int nghttp2_session_consume(nghttp2_session *session, int32_t stream_id, |
7578 | 0 | size_t size) { |
7579 | 0 | int rv; |
7580 | 0 | nghttp2_stream *stream; |
7581 | |
|
7582 | 0 | if (stream_id == 0) { |
7583 | 0 | return NGHTTP2_ERR_INVALID_ARGUMENT; |
7584 | 0 | } |
7585 | | |
7586 | 0 | if (!(session->opt_flags & NGHTTP2_OPTMASK_NO_AUTO_WINDOW_UPDATE)) { |
7587 | 0 | return NGHTTP2_ERR_INVALID_STATE; |
7588 | 0 | } |
7589 | | |
7590 | 0 | rv = session_update_connection_consumed_size(session, size); |
7591 | |
|
7592 | 0 | if (nghttp2_is_fatal(rv)) { |
7593 | 0 | return rv; |
7594 | 0 | } |
7595 | | |
7596 | 0 | stream = nghttp2_session_get_stream(session, stream_id); |
7597 | |
|
7598 | 0 | if (!stream) { |
7599 | 0 | return 0; |
7600 | 0 | } |
7601 | | |
7602 | 0 | rv = session_update_stream_consumed_size(session, stream, size); |
7603 | |
|
7604 | 0 | if (nghttp2_is_fatal(rv)) { |
7605 | 0 | return rv; |
7606 | 0 | } |
7607 | | |
7608 | 0 | return 0; |
7609 | 0 | } |
7610 | | |
7611 | 0 | int nghttp2_session_consume_connection(nghttp2_session *session, size_t size) { |
7612 | 0 | int rv; |
7613 | |
|
7614 | 0 | if (!(session->opt_flags & NGHTTP2_OPTMASK_NO_AUTO_WINDOW_UPDATE)) { |
7615 | 0 | return NGHTTP2_ERR_INVALID_STATE; |
7616 | 0 | } |
7617 | | |
7618 | 0 | rv = session_update_connection_consumed_size(session, size); |
7619 | |
|
7620 | 0 | if (nghttp2_is_fatal(rv)) { |
7621 | 0 | return rv; |
7622 | 0 | } |
7623 | | |
7624 | 0 | return 0; |
7625 | 0 | } |
7626 | | |
7627 | | int nghttp2_session_consume_stream(nghttp2_session *session, int32_t stream_id, |
7628 | 0 | size_t size) { |
7629 | 0 | int rv; |
7630 | 0 | nghttp2_stream *stream; |
7631 | |
|
7632 | 0 | if (stream_id == 0) { |
7633 | 0 | return NGHTTP2_ERR_INVALID_ARGUMENT; |
7634 | 0 | } |
7635 | | |
7636 | 0 | if (!(session->opt_flags & NGHTTP2_OPTMASK_NO_AUTO_WINDOW_UPDATE)) { |
7637 | 0 | return NGHTTP2_ERR_INVALID_STATE; |
7638 | 0 | } |
7639 | | |
7640 | 0 | stream = nghttp2_session_get_stream(session, stream_id); |
7641 | |
|
7642 | 0 | if (!stream) { |
7643 | 0 | return 0; |
7644 | 0 | } |
7645 | | |
7646 | 0 | rv = session_update_stream_consumed_size(session, stream, size); |
7647 | |
|
7648 | 0 | if (nghttp2_is_fatal(rv)) { |
7649 | 0 | return rv; |
7650 | 0 | } |
7651 | | |
7652 | 0 | return 0; |
7653 | 0 | } |
7654 | | |
7655 | | int nghttp2_session_set_next_stream_id(nghttp2_session *session, |
7656 | 0 | int32_t next_stream_id) { |
7657 | 0 | if (next_stream_id <= 0 || |
7658 | 0 | session->next_stream_id > (uint32_t)next_stream_id) { |
7659 | 0 | return NGHTTP2_ERR_INVALID_ARGUMENT; |
7660 | 0 | } |
7661 | | |
7662 | 0 | if (session->server) { |
7663 | 0 | if (next_stream_id % 2) { |
7664 | 0 | return NGHTTP2_ERR_INVALID_ARGUMENT; |
7665 | 0 | } |
7666 | 0 | } else if (next_stream_id % 2 == 0) { |
7667 | 0 | return NGHTTP2_ERR_INVALID_ARGUMENT; |
7668 | 0 | } |
7669 | | |
7670 | 0 | session->next_stream_id = (uint32_t)next_stream_id; |
7671 | 0 | return 0; |
7672 | 0 | } |
7673 | | |
7674 | 0 | uint32_t nghttp2_session_get_next_stream_id(nghttp2_session *session) { |
7675 | 0 | return session->next_stream_id; |
7676 | 0 | } |
7677 | | |
7678 | 0 | int32_t nghttp2_session_get_last_proc_stream_id(nghttp2_session *session) { |
7679 | 0 | return session->last_proc_stream_id; |
7680 | 0 | } |
7681 | | |
7682 | | nghttp2_stream *nghttp2_session_find_stream(nghttp2_session *session, |
7683 | 0 | int32_t stream_id) { |
7684 | 0 | if (stream_id == 0) { |
7685 | 0 | return &session->root; |
7686 | 0 | } |
7687 | | |
7688 | 0 | return nghttp2_session_get_stream_raw(session, stream_id); |
7689 | 0 | } |
7690 | | |
7691 | 0 | nghttp2_stream *nghttp2_session_get_root_stream(nghttp2_session *session) { |
7692 | 0 | return &session->root; |
7693 | 0 | } |
7694 | | |
7695 | 0 | int nghttp2_session_check_server_session(nghttp2_session *session) { |
7696 | 0 | return session->server; |
7697 | 0 | } |
7698 | | |
7699 | | int nghttp2_session_change_stream_priority( |
7700 | | nghttp2_session *session, int32_t stream_id, |
7701 | 0 | const nghttp2_priority_spec *pri_spec) { |
7702 | 0 | int rv; |
7703 | 0 | nghttp2_stream *stream; |
7704 | 0 | nghttp2_priority_spec pri_spec_copy; |
7705 | |
|
7706 | 0 | if (stream_id == 0 || stream_id == pri_spec->stream_id) { |
7707 | 0 | return NGHTTP2_ERR_INVALID_ARGUMENT; |
7708 | 0 | } |
7709 | | |
7710 | 0 | stream = nghttp2_session_get_stream_raw(session, stream_id); |
7711 | 0 | if (!stream) { |
7712 | 0 | return NGHTTP2_ERR_INVALID_ARGUMENT; |
7713 | 0 | } |
7714 | | |
7715 | 0 | pri_spec_copy = *pri_spec; |
7716 | 0 | nghttp2_priority_spec_normalize_weight(&pri_spec_copy); |
7717 | |
|
7718 | 0 | rv = nghttp2_session_reprioritize_stream(session, stream, &pri_spec_copy); |
7719 | |
|
7720 | 0 | if (nghttp2_is_fatal(rv)) { |
7721 | 0 | return rv; |
7722 | 0 | } |
7723 | | |
7724 | | /* We don't intentionally call nghttp2_session_adjust_idle_stream() |
7725 | | so that idle stream created by this function, and existing ones |
7726 | | are kept for application. We will adjust number of idle stream |
7727 | | in nghttp2_session_mem_send or nghttp2_session_mem_recv is |
7728 | | called. */ |
7729 | 0 | return 0; |
7730 | 0 | } |
7731 | | |
7732 | | int nghttp2_session_create_idle_stream(nghttp2_session *session, |
7733 | | int32_t stream_id, |
7734 | 0 | const nghttp2_priority_spec *pri_spec) { |
7735 | 0 | nghttp2_stream *stream; |
7736 | 0 | nghttp2_priority_spec pri_spec_copy; |
7737 | |
|
7738 | 0 | if (stream_id == 0 || stream_id == pri_spec->stream_id || |
7739 | 0 | !session_detect_idle_stream(session, stream_id)) { |
7740 | 0 | return NGHTTP2_ERR_INVALID_ARGUMENT; |
7741 | 0 | } |
7742 | | |
7743 | 0 | stream = nghttp2_session_get_stream_raw(session, stream_id); |
7744 | 0 | if (stream) { |
7745 | 0 | return NGHTTP2_ERR_INVALID_ARGUMENT; |
7746 | 0 | } |
7747 | | |
7748 | 0 | pri_spec_copy = *pri_spec; |
7749 | 0 | nghttp2_priority_spec_normalize_weight(&pri_spec_copy); |
7750 | |
|
7751 | 0 | stream = |
7752 | 0 | nghttp2_session_open_stream(session, stream_id, NGHTTP2_STREAM_FLAG_NONE, |
7753 | 0 | &pri_spec_copy, NGHTTP2_STREAM_IDLE, NULL); |
7754 | 0 | if (!stream) { |
7755 | 0 | return NGHTTP2_ERR_NOMEM; |
7756 | 0 | } |
7757 | | |
7758 | | /* We don't intentionally call nghttp2_session_adjust_idle_stream() |
7759 | | so that idle stream created by this function, and existing ones |
7760 | | are kept for application. We will adjust number of idle stream |
7761 | | in nghttp2_session_mem_send or nghttp2_session_mem_recv is |
7762 | | called. */ |
7763 | 0 | return 0; |
7764 | 0 | } |
7765 | | |
7766 | | size_t |
7767 | 0 | nghttp2_session_get_hd_inflate_dynamic_table_size(nghttp2_session *session) { |
7768 | 0 | return nghttp2_hd_inflate_get_dynamic_table_size(&session->hd_inflater); |
7769 | 0 | } |
7770 | | |
7771 | | size_t |
7772 | 0 | nghttp2_session_get_hd_deflate_dynamic_table_size(nghttp2_session *session) { |
7773 | 0 | return nghttp2_hd_deflate_get_dynamic_table_size(&session->hd_deflater); |
7774 | 0 | } |
7775 | | |
7776 | 0 | void nghttp2_session_set_user_data(nghttp2_session *session, void *user_data) { |
7777 | 0 | session->user_data = user_data; |
7778 | 0 | } |