Line | Count | Source (jump to first uncovered line) |
1 | | #define USE_THE_REPOSITORY_VARIABLE |
2 | | |
3 | | #include "git-compat-util.h" |
4 | | #include "config.h" |
5 | | #include "environment.h" |
6 | | #include "gettext.h" |
7 | | #include "hex.h" |
8 | | #include "refs.h" |
9 | | #include "pkt-line.h" |
10 | | #include "sideband.h" |
11 | | #include "repository.h" |
12 | | #include "object-store-ll.h" |
13 | | #include "oid-array.h" |
14 | | #include "object.h" |
15 | | #include "commit.h" |
16 | | #include "diff.h" |
17 | | #include "revision.h" |
18 | | #include "list-objects-filter-options.h" |
19 | | #include "run-command.h" |
20 | | #include "connect.h" |
21 | | #include "sigchain.h" |
22 | | #include "version.h" |
23 | | #include "string-list.h" |
24 | | #include "strvec.h" |
25 | | #include "trace2.h" |
26 | | #include "protocol.h" |
27 | | #include "upload-pack.h" |
28 | | #include "commit-graph.h" |
29 | | #include "commit-reach.h" |
30 | | #include "shallow.h" |
31 | | #include "write-or-die.h" |
32 | | #include "json-writer.h" |
33 | | #include "strmap.h" |
34 | | |
35 | | /* Remember to update object flag allocation in object.h */ |
36 | 0 | #define THEY_HAVE (1u << 11) |
37 | 0 | #define OUR_REF (1u << 12) |
38 | 0 | #define WANTED (1u << 13) |
39 | 0 | #define COMMON_KNOWN (1u << 14) |
40 | | |
41 | 0 | #define SHALLOW (1u << 16) |
42 | 0 | #define NOT_SHALLOW (1u << 17) |
43 | 0 | #define CLIENT_SHALLOW (1u << 18) |
44 | 0 | #define HIDDEN_REF (1u << 19) |
45 | | |
46 | 0 | #define ALL_FLAGS (THEY_HAVE | OUR_REF | WANTED | COMMON_KNOWN | SHALLOW | \ |
47 | 0 | NOT_SHALLOW | CLIENT_SHALLOW | HIDDEN_REF) |
48 | | |
49 | | /* Enum for allowed unadvertised object request (UOR) */ |
50 | | enum allow_uor { |
51 | | /* Allow specifying sha1 if it is a ref tip. */ |
52 | | ALLOW_TIP_SHA1 = 0x01, |
53 | | /* Allow request of a sha1 if it is reachable from a ref (possibly hidden ref). */ |
54 | | ALLOW_REACHABLE_SHA1 = 0x02, |
55 | | /* Allow request of any sha1. Implies ALLOW_TIP_SHA1 and ALLOW_REACHABLE_SHA1. */ |
56 | | ALLOW_ANY_SHA1 = 0x07 |
57 | | }; |
58 | | |
59 | | /* |
60 | | * Please annotate, and if possible group together, fields used only |
61 | | * for protocol v0 or only for protocol v2. |
62 | | */ |
63 | | struct upload_pack_data { |
64 | | struct string_list symref; /* v0 only */ |
65 | | struct object_array want_obj; |
66 | | struct object_array have_obj; |
67 | | struct strmap wanted_refs; /* v2 only */ |
68 | | struct strvec hidden_refs; |
69 | | |
70 | | struct object_array shallows; |
71 | | struct oidset deepen_not; |
72 | | struct object_array extra_edge_obj; |
73 | | int depth; |
74 | | timestamp_t deepen_since; |
75 | | int deepen_rev_list; |
76 | | int deepen_relative; |
77 | | int keepalive; |
78 | | int shallow_nr; |
79 | | timestamp_t oldest_have; |
80 | | |
81 | | unsigned int timeout; /* v0 only */ |
82 | | enum { |
83 | | NO_MULTI_ACK = 0, |
84 | | MULTI_ACK = 1, |
85 | | MULTI_ACK_DETAILED = 2 |
86 | | } multi_ack; /* v0 only */ |
87 | | |
88 | | /* 0 for no sideband, otherwise DEFAULT_PACKET_MAX or LARGE_PACKET_MAX */ |
89 | | int use_sideband; |
90 | | |
91 | | struct string_list uri_protocols; |
92 | | enum allow_uor allow_uor; |
93 | | |
94 | | struct list_objects_filter_options filter_options; |
95 | | struct string_list allowed_filters; |
96 | | |
97 | | struct packet_writer writer; |
98 | | |
99 | | char *pack_objects_hook; |
100 | | |
101 | | unsigned stateless_rpc : 1; /* v0 only */ |
102 | | unsigned no_done : 1; /* v0 only */ |
103 | | unsigned daemon_mode : 1; /* v0 only */ |
104 | | unsigned filter_capability_requested : 1; /* v0 only */ |
105 | | |
106 | | unsigned use_thin_pack : 1; |
107 | | unsigned use_ofs_delta : 1; |
108 | | unsigned no_progress : 1; |
109 | | unsigned use_include_tag : 1; |
110 | | unsigned wait_for_done : 1; |
111 | | unsigned allow_filter : 1; |
112 | | unsigned allow_filter_fallback : 1; |
113 | | unsigned long tree_filter_max_depth; |
114 | | |
115 | | unsigned done : 1; /* v2 only */ |
116 | | unsigned allow_ref_in_want : 1; /* v2 only */ |
117 | | unsigned allow_sideband_all : 1; /* v2 only */ |
118 | | unsigned seen_haves : 1; /* v2 only */ |
119 | | unsigned allow_packfile_uris : 1; /* v2 only */ |
120 | | unsigned advertise_sid : 1; |
121 | | unsigned sent_capabilities : 1; |
122 | | }; |
123 | | |
124 | | static void upload_pack_data_init(struct upload_pack_data *data) |
125 | 0 | { |
126 | 0 | struct string_list symref = STRING_LIST_INIT_DUP; |
127 | 0 | struct strmap wanted_refs = STRMAP_INIT; |
128 | 0 | struct strvec hidden_refs = STRVEC_INIT; |
129 | 0 | struct object_array want_obj = OBJECT_ARRAY_INIT; |
130 | 0 | struct object_array have_obj = OBJECT_ARRAY_INIT; |
131 | 0 | struct object_array shallows = OBJECT_ARRAY_INIT; |
132 | 0 | struct oidset deepen_not = OID_ARRAY_INIT; |
133 | 0 | struct string_list uri_protocols = STRING_LIST_INIT_DUP; |
134 | 0 | struct object_array extra_edge_obj = OBJECT_ARRAY_INIT; |
135 | 0 | struct string_list allowed_filters = STRING_LIST_INIT_DUP; |
136 | |
|
137 | 0 | memset(data, 0, sizeof(*data)); |
138 | 0 | data->symref = symref; |
139 | 0 | data->wanted_refs = wanted_refs; |
140 | 0 | data->hidden_refs = hidden_refs; |
141 | 0 | data->want_obj = want_obj; |
142 | 0 | data->have_obj = have_obj; |
143 | 0 | data->shallows = shallows; |
144 | 0 | data->deepen_not = deepen_not; |
145 | 0 | data->uri_protocols = uri_protocols; |
146 | 0 | data->extra_edge_obj = extra_edge_obj; |
147 | 0 | data->allowed_filters = allowed_filters; |
148 | 0 | data->allow_filter_fallback = 1; |
149 | 0 | data->tree_filter_max_depth = ULONG_MAX; |
150 | 0 | packet_writer_init(&data->writer, 1); |
151 | 0 | list_objects_filter_init(&data->filter_options); |
152 | |
|
153 | 0 | data->keepalive = 5; |
154 | 0 | data->advertise_sid = 0; |
155 | 0 | } |
156 | | |
157 | | static void upload_pack_data_clear(struct upload_pack_data *data) |
158 | 0 | { |
159 | 0 | string_list_clear(&data->symref, 1); |
160 | 0 | strmap_clear(&data->wanted_refs, 1); |
161 | 0 | strvec_clear(&data->hidden_refs); |
162 | 0 | object_array_clear(&data->want_obj); |
163 | 0 | object_array_clear(&data->have_obj); |
164 | 0 | object_array_clear(&data->shallows); |
165 | 0 | oidset_clear(&data->deepen_not); |
166 | 0 | object_array_clear(&data->extra_edge_obj); |
167 | 0 | list_objects_filter_release(&data->filter_options); |
168 | 0 | string_list_clear(&data->allowed_filters, 0); |
169 | |
|
170 | 0 | free((char *)data->pack_objects_hook); |
171 | 0 | } |
172 | | |
173 | | static void reset_timeout(unsigned int timeout) |
174 | 0 | { |
175 | 0 | alarm(timeout); |
176 | 0 | } |
177 | | |
178 | | static void send_client_data(int fd, const char *data, ssize_t sz, |
179 | | int use_sideband) |
180 | 0 | { |
181 | 0 | if (use_sideband) { |
182 | 0 | send_sideband(1, fd, data, sz, use_sideband); |
183 | 0 | return; |
184 | 0 | } |
185 | 0 | if (fd == 3) |
186 | | /* emergency quit */ |
187 | 0 | fd = 2; |
188 | 0 | if (fd == 2) { |
189 | | /* XXX: are we happy to lose stuff here? */ |
190 | 0 | xwrite(fd, data, sz); |
191 | 0 | return; |
192 | 0 | } |
193 | 0 | write_or_die(fd, data, sz); |
194 | 0 | } |
195 | | |
196 | | static int write_one_shallow(const struct commit_graft *graft, void *cb_data) |
197 | 0 | { |
198 | 0 | FILE *fp = cb_data; |
199 | 0 | if (graft->nr_parent == -1) |
200 | 0 | fprintf(fp, "--shallow %s\n", oid_to_hex(&graft->oid)); |
201 | 0 | return 0; |
202 | 0 | } |
203 | | |
204 | | struct output_state { |
205 | | /* |
206 | | * We do writes no bigger than LARGE_PACKET_DATA_MAX - 1, because with |
207 | | * sideband-64k the band designator takes up 1 byte of space. Because |
208 | | * relay_pack_data keeps the last byte to itself, we make the buffer 1 |
209 | | * byte bigger than the intended maximum write size. |
210 | | */ |
211 | | char buffer[(LARGE_PACKET_DATA_MAX - 1) + 1]; |
212 | | int used; |
213 | | unsigned packfile_uris_started : 1; |
214 | | unsigned packfile_started : 1; |
215 | | }; |
216 | | |
217 | | static int relay_pack_data(int pack_objects_out, struct output_state *os, |
218 | | int use_sideband, int write_packfile_line) |
219 | 0 | { |
220 | | /* |
221 | | * We keep the last byte to ourselves |
222 | | * in case we detect broken rev-list, so that we |
223 | | * can leave the stream corrupted. This is |
224 | | * unfortunate -- unpack-objects would happily |
225 | | * accept a valid packdata with trailing garbage, |
226 | | * so appending garbage after we pass all the |
227 | | * pack data is not good enough to signal |
228 | | * breakage to downstream. |
229 | | */ |
230 | 0 | ssize_t readsz; |
231 | |
|
232 | 0 | readsz = xread(pack_objects_out, os->buffer + os->used, |
233 | 0 | sizeof(os->buffer) - os->used); |
234 | 0 | if (readsz < 0) { |
235 | 0 | return readsz; |
236 | 0 | } |
237 | 0 | os->used += readsz; |
238 | |
|
239 | 0 | while (!os->packfile_started) { |
240 | 0 | char *p; |
241 | 0 | if (os->used >= 4 && !memcmp(os->buffer, "PACK", 4)) { |
242 | 0 | os->packfile_started = 1; |
243 | 0 | if (write_packfile_line) { |
244 | 0 | if (os->packfile_uris_started) |
245 | 0 | packet_delim(1); |
246 | 0 | packet_write_fmt(1, "\1packfile\n"); |
247 | 0 | } |
248 | 0 | break; |
249 | 0 | } |
250 | 0 | if ((p = memchr(os->buffer, '\n', os->used))) { |
251 | 0 | if (!os->packfile_uris_started) { |
252 | 0 | os->packfile_uris_started = 1; |
253 | 0 | if (!write_packfile_line) |
254 | 0 | BUG("packfile_uris requires sideband-all"); |
255 | 0 | packet_write_fmt(1, "\1packfile-uris\n"); |
256 | 0 | } |
257 | 0 | *p = '\0'; |
258 | 0 | packet_write_fmt(1, "\1%s\n", os->buffer); |
259 | |
|
260 | 0 | os->used -= p - os->buffer + 1; |
261 | 0 | memmove(os->buffer, p + 1, os->used); |
262 | 0 | } else { |
263 | | /* |
264 | | * Incomplete line. |
265 | | */ |
266 | 0 | return readsz; |
267 | 0 | } |
268 | 0 | } |
269 | | |
270 | 0 | if (os->used > 1) { |
271 | 0 | send_client_data(1, os->buffer, os->used - 1, use_sideband); |
272 | 0 | os->buffer[0] = os->buffer[os->used - 1]; |
273 | 0 | os->used = 1; |
274 | 0 | } else { |
275 | 0 | send_client_data(1, os->buffer, os->used, use_sideband); |
276 | 0 | os->used = 0; |
277 | 0 | } |
278 | |
|
279 | 0 | return readsz; |
280 | 0 | } |
281 | | |
282 | | static void create_pack_file(struct upload_pack_data *pack_data, |
283 | | const struct string_list *uri_protocols) |
284 | 0 | { |
285 | 0 | struct child_process pack_objects = CHILD_PROCESS_INIT; |
286 | 0 | struct output_state *output_state = xcalloc(1, sizeof(struct output_state)); |
287 | 0 | char progress[128]; |
288 | 0 | char abort_msg[] = "aborting due to possible repository " |
289 | 0 | "corruption on the remote side."; |
290 | 0 | ssize_t sz; |
291 | 0 | int i; |
292 | 0 | FILE *pipe_fd; |
293 | |
|
294 | 0 | if (!pack_data->pack_objects_hook) |
295 | 0 | pack_objects.git_cmd = 1; |
296 | 0 | else { |
297 | 0 | strvec_push(&pack_objects.args, pack_data->pack_objects_hook); |
298 | 0 | strvec_push(&pack_objects.args, "git"); |
299 | 0 | pack_objects.use_shell = 1; |
300 | 0 | } |
301 | |
|
302 | 0 | if (pack_data->shallow_nr) { |
303 | 0 | strvec_push(&pack_objects.args, "--shallow-file"); |
304 | 0 | strvec_push(&pack_objects.args, ""); |
305 | 0 | } |
306 | 0 | strvec_push(&pack_objects.args, "pack-objects"); |
307 | 0 | strvec_push(&pack_objects.args, "--revs"); |
308 | 0 | if (pack_data->use_thin_pack) |
309 | 0 | strvec_push(&pack_objects.args, "--thin"); |
310 | |
|
311 | 0 | strvec_push(&pack_objects.args, "--stdout"); |
312 | 0 | if (pack_data->shallow_nr) |
313 | 0 | strvec_push(&pack_objects.args, "--shallow"); |
314 | 0 | if (!pack_data->no_progress) |
315 | 0 | strvec_push(&pack_objects.args, "--progress"); |
316 | 0 | if (pack_data->use_ofs_delta) |
317 | 0 | strvec_push(&pack_objects.args, "--delta-base-offset"); |
318 | 0 | if (pack_data->use_include_tag) |
319 | 0 | strvec_push(&pack_objects.args, "--include-tag"); |
320 | 0 | if (pack_data->filter_options.choice) { |
321 | 0 | const char *spec = |
322 | 0 | expand_list_objects_filter_spec(&pack_data->filter_options); |
323 | 0 | strvec_pushf(&pack_objects.args, "--filter=%s", spec); |
324 | 0 | } |
325 | 0 | if (uri_protocols) { |
326 | 0 | for (i = 0; i < uri_protocols->nr; i++) |
327 | 0 | strvec_pushf(&pack_objects.args, "--uri-protocol=%s", |
328 | 0 | uri_protocols->items[i].string); |
329 | 0 | } |
330 | |
|
331 | 0 | pack_objects.in = -1; |
332 | 0 | pack_objects.out = -1; |
333 | 0 | pack_objects.err = -1; |
334 | 0 | pack_objects.clean_on_exit = 1; |
335 | |
|
336 | 0 | if (start_command(&pack_objects)) |
337 | 0 | die("git upload-pack: unable to fork git-pack-objects"); |
338 | | |
339 | 0 | pipe_fd = xfdopen(pack_objects.in, "w"); |
340 | |
|
341 | 0 | if (pack_data->shallow_nr) |
342 | 0 | for_each_commit_graft(write_one_shallow, pipe_fd); |
343 | |
|
344 | 0 | for (i = 0; i < pack_data->want_obj.nr; i++) |
345 | 0 | fprintf(pipe_fd, "%s\n", |
346 | 0 | oid_to_hex(&pack_data->want_obj.objects[i].item->oid)); |
347 | 0 | fprintf(pipe_fd, "--not\n"); |
348 | 0 | for (i = 0; i < pack_data->have_obj.nr; i++) |
349 | 0 | fprintf(pipe_fd, "%s\n", |
350 | 0 | oid_to_hex(&pack_data->have_obj.objects[i].item->oid)); |
351 | 0 | for (i = 0; i < pack_data->extra_edge_obj.nr; i++) |
352 | 0 | fprintf(pipe_fd, "%s\n", |
353 | 0 | oid_to_hex(&pack_data->extra_edge_obj.objects[i].item->oid)); |
354 | 0 | fprintf(pipe_fd, "\n"); |
355 | 0 | fflush(pipe_fd); |
356 | 0 | fclose(pipe_fd); |
357 | | |
358 | | /* We read from pack_objects.err to capture stderr output for |
359 | | * progress bar, and pack_objects.out to capture the pack data. |
360 | | */ |
361 | |
|
362 | 0 | while (1) { |
363 | 0 | struct pollfd pfd[2]; |
364 | 0 | int pe, pu, pollsize, polltimeout; |
365 | 0 | int ret; |
366 | |
|
367 | 0 | reset_timeout(pack_data->timeout); |
368 | |
|
369 | 0 | pollsize = 0; |
370 | 0 | pe = pu = -1; |
371 | |
|
372 | 0 | if (0 <= pack_objects.out) { |
373 | 0 | pfd[pollsize].fd = pack_objects.out; |
374 | 0 | pfd[pollsize].events = POLLIN; |
375 | 0 | pu = pollsize; |
376 | 0 | pollsize++; |
377 | 0 | } |
378 | 0 | if (0 <= pack_objects.err) { |
379 | 0 | pfd[pollsize].fd = pack_objects.err; |
380 | 0 | pfd[pollsize].events = POLLIN; |
381 | 0 | pe = pollsize; |
382 | 0 | pollsize++; |
383 | 0 | } |
384 | |
|
385 | 0 | if (!pollsize) |
386 | 0 | break; |
387 | | |
388 | 0 | polltimeout = pack_data->keepalive < 0 |
389 | 0 | ? -1 |
390 | 0 | : 1000 * pack_data->keepalive; |
391 | |
|
392 | 0 | ret = poll(pfd, pollsize, polltimeout); |
393 | |
|
394 | 0 | if (ret < 0) { |
395 | 0 | if (errno != EINTR) { |
396 | 0 | error_errno("poll failed, resuming"); |
397 | 0 | sleep(1); |
398 | 0 | } |
399 | 0 | continue; |
400 | 0 | } |
401 | 0 | if (0 <= pe && (pfd[pe].revents & (POLLIN|POLLHUP))) { |
402 | | /* Status ready; we ship that in the side-band |
403 | | * or dump to the standard error. |
404 | | */ |
405 | 0 | sz = xread(pack_objects.err, progress, |
406 | 0 | sizeof(progress)); |
407 | 0 | if (0 < sz) |
408 | 0 | send_client_data(2, progress, sz, |
409 | 0 | pack_data->use_sideband); |
410 | 0 | else if (sz == 0) { |
411 | 0 | close(pack_objects.err); |
412 | 0 | pack_objects.err = -1; |
413 | 0 | } |
414 | 0 | else |
415 | 0 | goto fail; |
416 | | /* give priority to status messages */ |
417 | 0 | continue; |
418 | 0 | } |
419 | 0 | if (0 <= pu && (pfd[pu].revents & (POLLIN|POLLHUP))) { |
420 | 0 | int result = relay_pack_data(pack_objects.out, |
421 | 0 | output_state, |
422 | 0 | pack_data->use_sideband, |
423 | 0 | !!uri_protocols); |
424 | |
|
425 | 0 | if (result == 0) { |
426 | 0 | close(pack_objects.out); |
427 | 0 | pack_objects.out = -1; |
428 | 0 | } else if (result < 0) { |
429 | 0 | goto fail; |
430 | 0 | } |
431 | 0 | } |
432 | | |
433 | | /* |
434 | | * We hit the keepalive timeout without saying anything; send |
435 | | * an empty message on the data sideband just to let the other |
436 | | * side know we're still working on it, but don't have any data |
437 | | * yet. |
438 | | * |
439 | | * If we don't have a sideband channel, there's no room in the |
440 | | * protocol to say anything, so those clients are just out of |
441 | | * luck. |
442 | | */ |
443 | 0 | if (!ret && pack_data->use_sideband) { |
444 | 0 | static const char buf[] = "0005\1"; |
445 | 0 | write_or_die(1, buf, 5); |
446 | 0 | } |
447 | 0 | } |
448 | | |
449 | 0 | if (finish_command(&pack_objects)) { |
450 | 0 | error("git upload-pack: git-pack-objects died with error."); |
451 | 0 | goto fail; |
452 | 0 | } |
453 | | |
454 | | /* flush the data */ |
455 | 0 | if (output_state->used > 0) { |
456 | 0 | send_client_data(1, output_state->buffer, output_state->used, |
457 | 0 | pack_data->use_sideband); |
458 | 0 | fprintf(stderr, "flushed.\n"); |
459 | 0 | } |
460 | 0 | free(output_state); |
461 | 0 | if (pack_data->use_sideband) |
462 | 0 | packet_flush(1); |
463 | 0 | return; |
464 | | |
465 | 0 | fail: |
466 | 0 | free(output_state); |
467 | 0 | send_client_data(3, abort_msg, strlen(abort_msg), |
468 | 0 | pack_data->use_sideband); |
469 | 0 | die("git upload-pack: %s", abort_msg); |
470 | 0 | } |
471 | | |
472 | | static int do_got_oid(struct upload_pack_data *data, const struct object_id *oid) |
473 | 0 | { |
474 | 0 | int we_knew_they_have = 0; |
475 | 0 | struct object *o = parse_object_with_flags(the_repository, oid, |
476 | 0 | PARSE_OBJECT_SKIP_HASH_CHECK | |
477 | 0 | PARSE_OBJECT_DISCARD_TREE); |
478 | |
|
479 | 0 | if (!o) |
480 | 0 | die("oops (%s)", oid_to_hex(oid)); |
481 | 0 | if (o->type == OBJ_COMMIT) { |
482 | 0 | struct commit_list *parents; |
483 | 0 | struct commit *commit = (struct commit *)o; |
484 | 0 | if (o->flags & THEY_HAVE) |
485 | 0 | we_knew_they_have = 1; |
486 | 0 | else |
487 | 0 | o->flags |= THEY_HAVE; |
488 | 0 | if (!data->oldest_have || (commit->date < data->oldest_have)) |
489 | 0 | data->oldest_have = commit->date; |
490 | 0 | for (parents = commit->parents; |
491 | 0 | parents; |
492 | 0 | parents = parents->next) |
493 | 0 | parents->item->object.flags |= THEY_HAVE; |
494 | 0 | } |
495 | 0 | if (!we_knew_they_have) { |
496 | 0 | add_object_array(o, NULL, &data->have_obj); |
497 | 0 | return 1; |
498 | 0 | } |
499 | 0 | return 0; |
500 | 0 | } |
501 | | |
502 | | static int got_oid(struct upload_pack_data *data, |
503 | | const char *hex, struct object_id *oid) |
504 | 0 | { |
505 | 0 | if (get_oid_hex(hex, oid)) |
506 | 0 | die("git upload-pack: expected SHA1 object, got '%s'", hex); |
507 | 0 | if (!repo_has_object_file_with_flags(the_repository, oid, |
508 | 0 | OBJECT_INFO_QUICK | OBJECT_INFO_SKIP_FETCH_OBJECT)) |
509 | 0 | return -1; |
510 | 0 | return do_got_oid(data, oid); |
511 | 0 | } |
512 | | |
513 | | static int ok_to_give_up(struct upload_pack_data *data) |
514 | 0 | { |
515 | 0 | timestamp_t min_generation = GENERATION_NUMBER_ZERO; |
516 | |
|
517 | 0 | if (!data->have_obj.nr) |
518 | 0 | return 0; |
519 | | |
520 | 0 | return can_all_from_reach_with_flag(&data->want_obj, THEY_HAVE, |
521 | 0 | COMMON_KNOWN, data->oldest_have, |
522 | 0 | min_generation); |
523 | 0 | } |
524 | | |
525 | | static int get_common_commits(struct upload_pack_data *data, |
526 | | struct packet_reader *reader) |
527 | 0 | { |
528 | 0 | struct object_id oid; |
529 | 0 | char last_hex[GIT_MAX_HEXSZ + 1]; |
530 | 0 | int got_common = 0; |
531 | 0 | int got_other = 0; |
532 | 0 | int sent_ready = 0; |
533 | |
|
534 | 0 | for (;;) { |
535 | 0 | const char *arg; |
536 | |
|
537 | 0 | reset_timeout(data->timeout); |
538 | |
|
539 | 0 | if (packet_reader_read(reader) != PACKET_READ_NORMAL) { |
540 | 0 | if (data->multi_ack == MULTI_ACK_DETAILED |
541 | 0 | && got_common |
542 | 0 | && !got_other |
543 | 0 | && ok_to_give_up(data)) { |
544 | 0 | sent_ready = 1; |
545 | 0 | packet_write_fmt(1, "ACK %s ready\n", last_hex); |
546 | 0 | } |
547 | 0 | if (data->have_obj.nr == 0 || data->multi_ack) |
548 | 0 | packet_write_fmt(1, "NAK\n"); |
549 | |
|
550 | 0 | if (data->no_done && sent_ready) { |
551 | 0 | packet_write_fmt(1, "ACK %s\n", last_hex); |
552 | 0 | return 0; |
553 | 0 | } |
554 | 0 | if (data->stateless_rpc) |
555 | 0 | exit(0); |
556 | 0 | got_common = 0; |
557 | 0 | got_other = 0; |
558 | 0 | continue; |
559 | 0 | } |
560 | 0 | if (skip_prefix(reader->line, "have ", &arg)) { |
561 | 0 | switch (got_oid(data, arg, &oid)) { |
562 | 0 | case -1: /* they have what we do not */ |
563 | 0 | got_other = 1; |
564 | 0 | if (data->multi_ack |
565 | 0 | && ok_to_give_up(data)) { |
566 | 0 | const char *hex = oid_to_hex(&oid); |
567 | 0 | if (data->multi_ack == MULTI_ACK_DETAILED) { |
568 | 0 | sent_ready = 1; |
569 | 0 | packet_write_fmt(1, "ACK %s ready\n", hex); |
570 | 0 | } else |
571 | 0 | packet_write_fmt(1, "ACK %s continue\n", hex); |
572 | 0 | } |
573 | 0 | break; |
574 | 0 | default: |
575 | 0 | got_common = 1; |
576 | 0 | oid_to_hex_r(last_hex, &oid); |
577 | 0 | if (data->multi_ack == MULTI_ACK_DETAILED) |
578 | 0 | packet_write_fmt(1, "ACK %s common\n", last_hex); |
579 | 0 | else if (data->multi_ack) |
580 | 0 | packet_write_fmt(1, "ACK %s continue\n", last_hex); |
581 | 0 | else if (data->have_obj.nr == 1) |
582 | 0 | packet_write_fmt(1, "ACK %s\n", last_hex); |
583 | 0 | break; |
584 | 0 | } |
585 | 0 | continue; |
586 | 0 | } |
587 | 0 | if (!strcmp(reader->line, "done")) { |
588 | 0 | if (data->have_obj.nr > 0) { |
589 | 0 | if (data->multi_ack) |
590 | 0 | packet_write_fmt(1, "ACK %s\n", last_hex); |
591 | 0 | return 0; |
592 | 0 | } |
593 | 0 | packet_write_fmt(1, "NAK\n"); |
594 | 0 | return -1; |
595 | 0 | } |
596 | 0 | die("git upload-pack: expected SHA1 list, got '%s'", reader->line); |
597 | 0 | } |
598 | 0 | } |
599 | | |
600 | | static int allow_hidden_refs(enum allow_uor allow_uor) |
601 | 0 | { |
602 | 0 | if ((allow_uor & ALLOW_ANY_SHA1) == ALLOW_ANY_SHA1) |
603 | 0 | return 1; |
604 | 0 | return !(allow_uor & (ALLOW_TIP_SHA1 | ALLOW_REACHABLE_SHA1)); |
605 | 0 | } |
606 | | |
607 | | static void for_each_namespaced_ref_1(each_ref_fn fn, |
608 | | struct upload_pack_data *data) |
609 | 0 | { |
610 | 0 | const char **excludes = NULL; |
611 | | /* |
612 | | * If `data->allow_uor` allows fetching hidden refs, we need to |
613 | | * mark all references (including hidden ones), to check in |
614 | | * `is_our_ref()` below. |
615 | | * |
616 | | * Otherwise, we only care about whether each reference's object |
617 | | * has the OUR_REF bit set or not, so do not need to visit |
618 | | * hidden references. |
619 | | */ |
620 | 0 | if (allow_hidden_refs(data->allow_uor)) |
621 | 0 | excludes = hidden_refs_to_excludes(&data->hidden_refs); |
622 | |
|
623 | 0 | refs_for_each_namespaced_ref(get_main_ref_store(the_repository), |
624 | 0 | excludes, fn, data); |
625 | 0 | } |
626 | | |
627 | | |
628 | | static int is_our_ref(struct object *o, enum allow_uor allow_uor) |
629 | 0 | { |
630 | 0 | return o->flags & ((allow_hidden_refs(allow_uor) ? 0 : HIDDEN_REF) | OUR_REF); |
631 | 0 | } |
632 | | |
633 | | /* |
634 | | * on successful case, it's up to the caller to close cmd->out |
635 | | */ |
636 | | static int do_reachable_revlist(struct child_process *cmd, |
637 | | struct object_array *src, |
638 | | struct object_array *reachable, |
639 | | enum allow_uor allow_uor) |
640 | 0 | { |
641 | 0 | struct object *o; |
642 | 0 | FILE *cmd_in = NULL; |
643 | 0 | int i; |
644 | |
|
645 | 0 | strvec_pushl(&cmd->args, "rev-list", "--stdin", NULL); |
646 | 0 | cmd->git_cmd = 1; |
647 | 0 | cmd->no_stderr = 1; |
648 | 0 | cmd->in = -1; |
649 | 0 | cmd->out = -1; |
650 | | |
651 | | /* |
652 | | * If the next rev-list --stdin encounters an unknown commit, |
653 | | * it terminates, which will cause SIGPIPE in the write loop |
654 | | * below. |
655 | | */ |
656 | 0 | sigchain_push(SIGPIPE, SIG_IGN); |
657 | |
|
658 | 0 | if (start_command(cmd)) |
659 | 0 | goto error; |
660 | | |
661 | 0 | cmd_in = xfdopen(cmd->in, "w"); |
662 | |
|
663 | 0 | for (i = get_max_object_index(); 0 < i; ) { |
664 | 0 | o = get_indexed_object(--i); |
665 | 0 | if (!o) |
666 | 0 | continue; |
667 | 0 | if (reachable && o->type == OBJ_COMMIT) |
668 | 0 | o->flags &= ~TMP_MARK; |
669 | 0 | if (!is_our_ref(o, allow_uor)) |
670 | 0 | continue; |
671 | 0 | if (fprintf(cmd_in, "^%s\n", oid_to_hex(&o->oid)) < 0) |
672 | 0 | goto error; |
673 | 0 | } |
674 | 0 | for (i = 0; i < src->nr; i++) { |
675 | 0 | o = src->objects[i].item; |
676 | 0 | if (is_our_ref(o, allow_uor)) { |
677 | 0 | if (reachable) |
678 | 0 | add_object_array(o, NULL, reachable); |
679 | 0 | continue; |
680 | 0 | } |
681 | 0 | if (reachable && o->type == OBJ_COMMIT) |
682 | 0 | o->flags |= TMP_MARK; |
683 | 0 | if (fprintf(cmd_in, "%s\n", oid_to_hex(&o->oid)) < 0) |
684 | 0 | goto error; |
685 | 0 | } |
686 | 0 | if (ferror(cmd_in) || fflush(cmd_in)) |
687 | 0 | goto error; |
688 | 0 | fclose(cmd_in); |
689 | 0 | cmd->in = -1; |
690 | 0 | sigchain_pop(SIGPIPE); |
691 | |
|
692 | 0 | return 0; |
693 | | |
694 | 0 | error: |
695 | 0 | sigchain_pop(SIGPIPE); |
696 | |
|
697 | 0 | if (cmd_in) |
698 | 0 | fclose(cmd_in); |
699 | 0 | if (cmd->out >= 0) |
700 | 0 | close(cmd->out); |
701 | 0 | return -1; |
702 | 0 | } |
703 | | |
704 | | static int get_reachable_list(struct upload_pack_data *data, |
705 | | struct object_array *reachable) |
706 | 0 | { |
707 | 0 | struct child_process cmd = CHILD_PROCESS_INIT; |
708 | 0 | int i; |
709 | 0 | struct object *o; |
710 | 0 | char namebuf[GIT_MAX_HEXSZ + 2]; /* ^ + hash + LF */ |
711 | 0 | const unsigned hexsz = the_hash_algo->hexsz; |
712 | |
|
713 | 0 | if (do_reachable_revlist(&cmd, &data->shallows, reachable, |
714 | 0 | data->allow_uor) < 0) |
715 | 0 | return -1; |
716 | | |
717 | 0 | while ((i = read_in_full(cmd.out, namebuf, hexsz + 1)) == hexsz + 1) { |
718 | 0 | struct object_id oid; |
719 | 0 | const char *p; |
720 | |
|
721 | 0 | if (parse_oid_hex(namebuf, &oid, &p) || *p != '\n') |
722 | 0 | break; |
723 | | |
724 | 0 | o = lookup_object(the_repository, &oid); |
725 | 0 | if (o && o->type == OBJ_COMMIT) { |
726 | 0 | o->flags &= ~TMP_MARK; |
727 | 0 | } |
728 | 0 | } |
729 | 0 | for (i = get_max_object_index(); 0 < i; i--) { |
730 | 0 | o = get_indexed_object(i - 1); |
731 | 0 | if (o && o->type == OBJ_COMMIT && |
732 | 0 | (o->flags & TMP_MARK)) { |
733 | 0 | add_object_array(o, NULL, reachable); |
734 | 0 | o->flags &= ~TMP_MARK; |
735 | 0 | } |
736 | 0 | } |
737 | 0 | close(cmd.out); |
738 | |
|
739 | 0 | if (finish_command(&cmd)) |
740 | 0 | return -1; |
741 | | |
742 | 0 | return 0; |
743 | 0 | } |
744 | | |
745 | | static int has_unreachable(struct object_array *src, enum allow_uor allow_uor) |
746 | 0 | { |
747 | 0 | struct child_process cmd = CHILD_PROCESS_INIT; |
748 | 0 | char buf[1]; |
749 | 0 | int i; |
750 | |
|
751 | 0 | if (do_reachable_revlist(&cmd, src, NULL, allow_uor) < 0) |
752 | 0 | return 1; |
753 | | |
754 | | /* |
755 | | * The commits out of the rev-list are not ancestors of |
756 | | * our ref. |
757 | | */ |
758 | 0 | i = read_in_full(cmd.out, buf, 1); |
759 | 0 | if (i) |
760 | 0 | goto error; |
761 | 0 | close(cmd.out); |
762 | 0 | cmd.out = -1; |
763 | | |
764 | | /* |
765 | | * rev-list may have died by encountering a bad commit |
766 | | * in the history, in which case we do want to bail out |
767 | | * even when it showed no commit. |
768 | | */ |
769 | 0 | if (finish_command(&cmd)) |
770 | 0 | goto error; |
771 | | |
772 | | /* All the non-tip ones are ancestors of what we advertised */ |
773 | 0 | return 0; |
774 | | |
775 | 0 | error: |
776 | 0 | if (cmd.out >= 0) |
777 | 0 | close(cmd.out); |
778 | 0 | return 1; |
779 | 0 | } |
780 | | |
781 | | static void check_non_tip(struct upload_pack_data *data) |
782 | 0 | { |
783 | 0 | int i; |
784 | | |
785 | | /* |
786 | | * In the normal in-process case without |
787 | | * uploadpack.allowReachableSHA1InWant, |
788 | | * non-tip requests can never happen. |
789 | | */ |
790 | 0 | if (!data->stateless_rpc && !(data->allow_uor & ALLOW_REACHABLE_SHA1)) |
791 | 0 | goto error; |
792 | 0 | if (!has_unreachable(&data->want_obj, data->allow_uor)) |
793 | | /* All the non-tip ones are ancestors of what we advertised */ |
794 | 0 | return; |
795 | | |
796 | 0 | error: |
797 | | /* Pick one of them (we know there at least is one) */ |
798 | 0 | for (i = 0; i < data->want_obj.nr; i++) { |
799 | 0 | struct object *o = data->want_obj.objects[i].item; |
800 | 0 | if (!is_our_ref(o, data->allow_uor)) { |
801 | 0 | error("git upload-pack: not our ref %s", |
802 | 0 | oid_to_hex(&o->oid)); |
803 | 0 | packet_writer_error(&data->writer, |
804 | 0 | "upload-pack: not our ref %s", |
805 | 0 | oid_to_hex(&o->oid)); |
806 | 0 | exit(128); |
807 | 0 | } |
808 | 0 | } |
809 | 0 | } |
810 | | |
811 | | static void send_shallow(struct upload_pack_data *data, |
812 | | struct commit_list *result) |
813 | 0 | { |
814 | 0 | while (result) { |
815 | 0 | struct object *object = &result->item->object; |
816 | 0 | if (!(object->flags & (CLIENT_SHALLOW|NOT_SHALLOW))) { |
817 | 0 | packet_writer_write(&data->writer, "shallow %s", |
818 | 0 | oid_to_hex(&object->oid)); |
819 | 0 | register_shallow(the_repository, &object->oid); |
820 | 0 | data->shallow_nr++; |
821 | 0 | } |
822 | 0 | result = result->next; |
823 | 0 | } |
824 | 0 | } |
825 | | |
826 | | static void send_unshallow(struct upload_pack_data *data) |
827 | 0 | { |
828 | 0 | int i; |
829 | |
|
830 | 0 | for (i = 0; i < data->shallows.nr; i++) { |
831 | 0 | struct object *object = data->shallows.objects[i].item; |
832 | 0 | if (object->flags & NOT_SHALLOW) { |
833 | 0 | struct commit_list *parents; |
834 | 0 | packet_writer_write(&data->writer, "unshallow %s", |
835 | 0 | oid_to_hex(&object->oid)); |
836 | 0 | object->flags &= ~CLIENT_SHALLOW; |
837 | | /* |
838 | | * We want to _register_ "object" as shallow, but we |
839 | | * also need to traverse object's parents to deepen a |
840 | | * shallow clone. Unregister it for now so we can |
841 | | * parse and add the parents to the want list, then |
842 | | * re-register it. |
843 | | */ |
844 | 0 | unregister_shallow(&object->oid); |
845 | 0 | object->parsed = 0; |
846 | 0 | parse_commit_or_die((struct commit *)object); |
847 | 0 | parents = ((struct commit *)object)->parents; |
848 | 0 | while (parents) { |
849 | 0 | add_object_array(&parents->item->object, |
850 | 0 | NULL, &data->want_obj); |
851 | 0 | parents = parents->next; |
852 | 0 | } |
853 | 0 | add_object_array(object, NULL, &data->extra_edge_obj); |
854 | 0 | } |
855 | | /* make sure commit traversal conforms to client */ |
856 | 0 | register_shallow(the_repository, &object->oid); |
857 | 0 | } |
858 | 0 | } |
859 | | |
860 | | static int check_ref(const char *refname_full, const char *referent UNUSED, const struct object_id *oid, |
861 | | int flag, void *cb_data); |
862 | | static void deepen(struct upload_pack_data *data, int depth) |
863 | 0 | { |
864 | 0 | if (depth == INFINITE_DEPTH && !is_repository_shallow(the_repository)) { |
865 | 0 | int i; |
866 | |
|
867 | 0 | for (i = 0; i < data->shallows.nr; i++) { |
868 | 0 | struct object *object = data->shallows.objects[i].item; |
869 | 0 | object->flags |= NOT_SHALLOW; |
870 | 0 | } |
871 | 0 | } else if (data->deepen_relative) { |
872 | 0 | struct object_array reachable_shallows = OBJECT_ARRAY_INIT; |
873 | 0 | struct commit_list *result; |
874 | | |
875 | | /* |
876 | | * Checking for reachable shallows requires that our refs be |
877 | | * marked with OUR_REF. |
878 | | */ |
879 | 0 | refs_head_ref_namespaced(get_main_ref_store(the_repository), |
880 | 0 | check_ref, data); |
881 | 0 | for_each_namespaced_ref_1(check_ref, data); |
882 | |
|
883 | 0 | get_reachable_list(data, &reachable_shallows); |
884 | 0 | result = get_shallow_commits(&reachable_shallows, |
885 | 0 | depth + 1, |
886 | 0 | SHALLOW, NOT_SHALLOW); |
887 | 0 | send_shallow(data, result); |
888 | 0 | free_commit_list(result); |
889 | 0 | object_array_clear(&reachable_shallows); |
890 | 0 | } else { |
891 | 0 | struct commit_list *result; |
892 | |
|
893 | 0 | result = get_shallow_commits(&data->want_obj, depth, |
894 | 0 | SHALLOW, NOT_SHALLOW); |
895 | 0 | send_shallow(data, result); |
896 | 0 | free_commit_list(result); |
897 | 0 | } |
898 | |
|
899 | 0 | send_unshallow(data); |
900 | 0 | } |
901 | | |
902 | | static void deepen_by_rev_list(struct upload_pack_data *data, |
903 | | int ac, |
904 | | const char **av) |
905 | 0 | { |
906 | 0 | struct commit_list *result; |
907 | |
|
908 | 0 | disable_commit_graph(the_repository); |
909 | 0 | result = get_shallow_commits_by_rev_list(ac, av, SHALLOW, NOT_SHALLOW); |
910 | 0 | send_shallow(data, result); |
911 | 0 | free_commit_list(result); |
912 | 0 | send_unshallow(data); |
913 | 0 | } |
914 | | |
915 | | /* Returns 1 if a shallow list is sent or 0 otherwise */ |
916 | | static int send_shallow_list(struct upload_pack_data *data) |
917 | 0 | { |
918 | 0 | int ret = 0; |
919 | |
|
920 | 0 | if (data->depth > 0 && data->deepen_rev_list) |
921 | 0 | die("git upload-pack: deepen and deepen-since (or deepen-not) cannot be used together"); |
922 | 0 | if (data->depth > 0) { |
923 | 0 | deepen(data, data->depth); |
924 | 0 | ret = 1; |
925 | 0 | } else if (data->deepen_rev_list) { |
926 | 0 | struct strvec av = STRVEC_INIT; |
927 | 0 | int i; |
928 | |
|
929 | 0 | strvec_push(&av, "rev-list"); |
930 | 0 | if (data->deepen_since) |
931 | 0 | strvec_pushf(&av, "--max-age=%"PRItime, data->deepen_since); |
932 | 0 | if (oidset_size(&data->deepen_not)) { |
933 | 0 | const struct object_id *oid; |
934 | 0 | struct oidset_iter iter; |
935 | 0 | strvec_push(&av, "--not"); |
936 | 0 | oidset_iter_init(&data->deepen_not, &iter); |
937 | 0 | while ((oid = oidset_iter_next(&iter))) |
938 | 0 | strvec_push(&av, oid_to_hex(oid)); |
939 | 0 | strvec_push(&av, "--not"); |
940 | 0 | } |
941 | 0 | for (i = 0; i < data->want_obj.nr; i++) { |
942 | 0 | struct object *o = data->want_obj.objects[i].item; |
943 | 0 | strvec_push(&av, oid_to_hex(&o->oid)); |
944 | 0 | } |
945 | 0 | deepen_by_rev_list(data, av.nr, av.v); |
946 | 0 | strvec_clear(&av); |
947 | 0 | ret = 1; |
948 | 0 | } else { |
949 | 0 | if (data->shallows.nr > 0) { |
950 | 0 | int i; |
951 | 0 | for (i = 0; i < data->shallows.nr; i++) |
952 | 0 | register_shallow(the_repository, |
953 | 0 | &data->shallows.objects[i].item->oid); |
954 | 0 | } |
955 | 0 | } |
956 | |
|
957 | 0 | data->shallow_nr += data->shallows.nr; |
958 | 0 | return ret; |
959 | 0 | } |
960 | | |
961 | | static int process_shallow(const char *line, struct object_array *shallows) |
962 | 0 | { |
963 | 0 | const char *arg; |
964 | 0 | if (skip_prefix(line, "shallow ", &arg)) { |
965 | 0 | struct object_id oid; |
966 | 0 | struct object *object; |
967 | 0 | if (get_oid_hex(arg, &oid)) |
968 | 0 | die("invalid shallow line: %s", line); |
969 | 0 | object = parse_object(the_repository, &oid); |
970 | 0 | if (!object) |
971 | 0 | return 1; |
972 | 0 | if (object->type != OBJ_COMMIT) |
973 | 0 | die("invalid shallow object %s", oid_to_hex(&oid)); |
974 | 0 | if (!(object->flags & CLIENT_SHALLOW)) { |
975 | 0 | object->flags |= CLIENT_SHALLOW; |
976 | 0 | add_object_array(object, NULL, shallows); |
977 | 0 | } |
978 | 0 | return 1; |
979 | 0 | } |
980 | | |
981 | 0 | return 0; |
982 | 0 | } |
983 | | |
984 | | static int process_deepen(const char *line, int *depth) |
985 | 0 | { |
986 | 0 | const char *arg; |
987 | 0 | if (skip_prefix(line, "deepen ", &arg)) { |
988 | 0 | char *end = NULL; |
989 | 0 | *depth = (int)strtol(arg, &end, 0); |
990 | 0 | if (!end || *end || *depth <= 0) |
991 | 0 | die("Invalid deepen: %s", line); |
992 | 0 | return 1; |
993 | 0 | } |
994 | | |
995 | 0 | return 0; |
996 | 0 | } |
997 | | |
998 | | static int process_deepen_since(const char *line, timestamp_t *deepen_since, int *deepen_rev_list) |
999 | 0 | { |
1000 | 0 | const char *arg; |
1001 | 0 | if (skip_prefix(line, "deepen-since ", &arg)) { |
1002 | 0 | char *end = NULL; |
1003 | 0 | *deepen_since = parse_timestamp(arg, &end, 0); |
1004 | 0 | if (!end || *end || !deepen_since || |
1005 | | /* revisions.c's max_age -1 is special */ |
1006 | 0 | *deepen_since == -1) |
1007 | 0 | die("Invalid deepen-since: %s", line); |
1008 | 0 | *deepen_rev_list = 1; |
1009 | 0 | return 1; |
1010 | 0 | } |
1011 | 0 | return 0; |
1012 | 0 | } |
1013 | | |
1014 | | static int process_deepen_not(const char *line, struct oidset *deepen_not, int *deepen_rev_list) |
1015 | 0 | { |
1016 | 0 | const char *arg; |
1017 | 0 | if (skip_prefix(line, "deepen-not ", &arg)) { |
1018 | 0 | char *ref = NULL; |
1019 | 0 | struct object_id oid; |
1020 | 0 | if (expand_ref(the_repository, arg, strlen(arg), &oid, &ref) != 1) |
1021 | 0 | die("git upload-pack: ambiguous deepen-not: %s", line); |
1022 | 0 | oidset_insert(deepen_not, &oid); |
1023 | 0 | free(ref); |
1024 | 0 | *deepen_rev_list = 1; |
1025 | 0 | return 1; |
1026 | 0 | } |
1027 | 0 | return 0; |
1028 | 0 | } |
1029 | | |
1030 | | NORETURN __attribute__((format(printf,2,3))) |
1031 | | static void send_err_and_die(struct upload_pack_data *data, |
1032 | | const char *fmt, ...) |
1033 | 0 | { |
1034 | 0 | struct strbuf buf = STRBUF_INIT; |
1035 | 0 | va_list ap; |
1036 | |
|
1037 | 0 | va_start(ap, fmt); |
1038 | 0 | strbuf_vaddf(&buf, fmt, ap); |
1039 | 0 | va_end(ap); |
1040 | |
|
1041 | 0 | packet_writer_error(&data->writer, "%s", buf.buf); |
1042 | 0 | die("%s", buf.buf); |
1043 | 0 | } |
1044 | | |
1045 | | static void check_one_filter(struct upload_pack_data *data, |
1046 | | struct list_objects_filter_options *opts) |
1047 | 0 | { |
1048 | 0 | const char *key = list_object_filter_config_name(opts->choice); |
1049 | 0 | struct string_list_item *item = string_list_lookup(&data->allowed_filters, |
1050 | 0 | key); |
1051 | 0 | int allowed; |
1052 | |
|
1053 | 0 | if (item) |
1054 | 0 | allowed = (intptr_t)item->util; |
1055 | 0 | else |
1056 | 0 | allowed = data->allow_filter_fallback; |
1057 | |
|
1058 | 0 | if (!allowed) |
1059 | 0 | send_err_and_die(data, "filter '%s' not supported", key); |
1060 | | |
1061 | 0 | if (opts->choice == LOFC_TREE_DEPTH && |
1062 | 0 | opts->tree_exclude_depth > data->tree_filter_max_depth) |
1063 | 0 | send_err_and_die(data, |
1064 | 0 | "tree filter allows max depth %lu, but got %lu", |
1065 | 0 | data->tree_filter_max_depth, |
1066 | 0 | opts->tree_exclude_depth); |
1067 | 0 | } |
1068 | | |
1069 | | static void check_filter_recurse(struct upload_pack_data *data, |
1070 | | struct list_objects_filter_options *opts) |
1071 | 0 | { |
1072 | 0 | size_t i; |
1073 | |
|
1074 | 0 | check_one_filter(data, opts); |
1075 | 0 | if (opts->choice != LOFC_COMBINE) |
1076 | 0 | return; |
1077 | | |
1078 | 0 | for (i = 0; i < opts->sub_nr; i++) |
1079 | 0 | check_filter_recurse(data, &opts->sub[i]); |
1080 | 0 | } |
1081 | | |
1082 | | static void die_if_using_banned_filter(struct upload_pack_data *data) |
1083 | 0 | { |
1084 | 0 | check_filter_recurse(data, &data->filter_options); |
1085 | 0 | } |
1086 | | |
1087 | | static void receive_needs(struct upload_pack_data *data, |
1088 | | struct packet_reader *reader) |
1089 | 0 | { |
1090 | 0 | int has_non_tip = 0; |
1091 | |
|
1092 | 0 | data->shallow_nr = 0; |
1093 | 0 | for (;;) { |
1094 | 0 | struct object *o; |
1095 | 0 | const char *features; |
1096 | 0 | struct object_id oid_buf; |
1097 | 0 | const char *arg; |
1098 | 0 | size_t feature_len; |
1099 | |
|
1100 | 0 | reset_timeout(data->timeout); |
1101 | 0 | if (packet_reader_read(reader) != PACKET_READ_NORMAL) |
1102 | 0 | break; |
1103 | | |
1104 | 0 | if (process_shallow(reader->line, &data->shallows)) |
1105 | 0 | continue; |
1106 | 0 | if (process_deepen(reader->line, &data->depth)) |
1107 | 0 | continue; |
1108 | 0 | if (process_deepen_since(reader->line, &data->deepen_since, &data->deepen_rev_list)) |
1109 | 0 | continue; |
1110 | 0 | if (process_deepen_not(reader->line, &data->deepen_not, &data->deepen_rev_list)) |
1111 | 0 | continue; |
1112 | | |
1113 | 0 | if (skip_prefix(reader->line, "filter ", &arg)) { |
1114 | 0 | if (!data->filter_capability_requested) |
1115 | 0 | die("git upload-pack: filtering capability not negotiated"); |
1116 | 0 | list_objects_filter_die_if_populated(&data->filter_options); |
1117 | 0 | parse_list_objects_filter(&data->filter_options, arg); |
1118 | 0 | die_if_using_banned_filter(data); |
1119 | 0 | continue; |
1120 | 0 | } |
1121 | | |
1122 | 0 | if (!skip_prefix(reader->line, "want ", &arg) || |
1123 | 0 | parse_oid_hex(arg, &oid_buf, &features)) |
1124 | 0 | die("git upload-pack: protocol error, " |
1125 | 0 | "expected to get object ID, not '%s'", reader->line); |
1126 | | |
1127 | 0 | if (parse_feature_request(features, "deepen-relative")) |
1128 | 0 | data->deepen_relative = 1; |
1129 | 0 | if (parse_feature_request(features, "multi_ack_detailed")) |
1130 | 0 | data->multi_ack = MULTI_ACK_DETAILED; |
1131 | 0 | else if (parse_feature_request(features, "multi_ack")) |
1132 | 0 | data->multi_ack = MULTI_ACK; |
1133 | 0 | if (parse_feature_request(features, "no-done")) |
1134 | 0 | data->no_done = 1; |
1135 | 0 | if (parse_feature_request(features, "thin-pack")) |
1136 | 0 | data->use_thin_pack = 1; |
1137 | 0 | if (parse_feature_request(features, "ofs-delta")) |
1138 | 0 | data->use_ofs_delta = 1; |
1139 | 0 | if (parse_feature_request(features, "side-band-64k")) |
1140 | 0 | data->use_sideband = LARGE_PACKET_MAX; |
1141 | 0 | else if (parse_feature_request(features, "side-band")) |
1142 | 0 | data->use_sideband = DEFAULT_PACKET_MAX; |
1143 | 0 | if (parse_feature_request(features, "no-progress")) |
1144 | 0 | data->no_progress = 1; |
1145 | 0 | if (parse_feature_request(features, "include-tag")) |
1146 | 0 | data->use_include_tag = 1; |
1147 | 0 | if (data->allow_filter && |
1148 | 0 | parse_feature_request(features, "filter")) |
1149 | 0 | data->filter_capability_requested = 1; |
1150 | |
|
1151 | 0 | arg = parse_feature_value(features, "session-id", &feature_len, NULL); |
1152 | 0 | if (arg) { |
1153 | 0 | char *client_sid = xstrndup(arg, feature_len); |
1154 | 0 | trace2_data_string("transfer", NULL, "client-sid", client_sid); |
1155 | 0 | free(client_sid); |
1156 | 0 | } |
1157 | |
|
1158 | 0 | o = parse_object_with_flags(the_repository, &oid_buf, |
1159 | 0 | PARSE_OBJECT_SKIP_HASH_CHECK | |
1160 | 0 | PARSE_OBJECT_DISCARD_TREE); |
1161 | 0 | if (!o) { |
1162 | 0 | packet_writer_error(&data->writer, |
1163 | 0 | "upload-pack: not our ref %s", |
1164 | 0 | oid_to_hex(&oid_buf)); |
1165 | 0 | die("git upload-pack: not our ref %s", |
1166 | 0 | oid_to_hex(&oid_buf)); |
1167 | 0 | } |
1168 | 0 | if (!(o->flags & WANTED)) { |
1169 | 0 | o->flags |= WANTED; |
1170 | 0 | if (!((data->allow_uor & ALLOW_ANY_SHA1) == ALLOW_ANY_SHA1 |
1171 | 0 | || is_our_ref(o, data->allow_uor))) |
1172 | 0 | has_non_tip = 1; |
1173 | 0 | add_object_array(o, NULL, &data->want_obj); |
1174 | 0 | } |
1175 | 0 | } |
1176 | | |
1177 | | /* |
1178 | | * We have sent all our refs already, and the other end |
1179 | | * should have chosen out of them. When we are operating |
1180 | | * in the stateless RPC mode, however, their choice may |
1181 | | * have been based on the set of older refs advertised |
1182 | | * by another process that handled the initial request. |
1183 | | */ |
1184 | 0 | if (has_non_tip) |
1185 | 0 | check_non_tip(data); |
1186 | |
|
1187 | 0 | if (!data->use_sideband && data->daemon_mode) |
1188 | 0 | data->no_progress = 1; |
1189 | |
|
1190 | 0 | if (data->depth == 0 && !data->deepen_rev_list && data->shallows.nr == 0) |
1191 | 0 | return; |
1192 | | |
1193 | 0 | if (send_shallow_list(data)) |
1194 | 0 | packet_flush(1); |
1195 | 0 | } |
1196 | | |
1197 | | /* return non-zero if the ref is hidden, otherwise 0 */ |
1198 | | static int mark_our_ref(const char *refname, const char *refname_full, |
1199 | | const struct object_id *oid, const struct strvec *hidden_refs) |
1200 | 0 | { |
1201 | 0 | struct object *o = lookup_unknown_object(the_repository, oid); |
1202 | |
|
1203 | 0 | if (ref_is_hidden(refname, refname_full, hidden_refs)) { |
1204 | 0 | o->flags |= HIDDEN_REF; |
1205 | 0 | return 1; |
1206 | 0 | } |
1207 | 0 | o->flags |= OUR_REF; |
1208 | 0 | return 0; |
1209 | 0 | } |
1210 | | |
1211 | | static int check_ref(const char *refname_full, const char *referent UNUSED,const struct object_id *oid, |
1212 | | int flag UNUSED, void *cb_data) |
1213 | 0 | { |
1214 | 0 | const char *refname = strip_namespace(refname_full); |
1215 | 0 | struct upload_pack_data *data = cb_data; |
1216 | |
|
1217 | 0 | mark_our_ref(refname, refname_full, oid, &data->hidden_refs); |
1218 | 0 | return 0; |
1219 | 0 | } |
1220 | | |
1221 | | static void format_symref_info(struct strbuf *buf, struct string_list *symref) |
1222 | 0 | { |
1223 | 0 | struct string_list_item *item; |
1224 | |
|
1225 | 0 | if (!symref->nr) |
1226 | 0 | return; |
1227 | 0 | for_each_string_list_item(item, symref) |
1228 | 0 | strbuf_addf(buf, " symref=%s:%s", item->string, (char *)item->util); |
1229 | 0 | } |
1230 | | |
1231 | 0 | static void format_session_id(struct strbuf *buf, struct upload_pack_data *d) { |
1232 | 0 | if (d->advertise_sid) |
1233 | 0 | strbuf_addf(buf, " session-id=%s", trace2_session_id()); |
1234 | 0 | } |
1235 | | |
1236 | | static void write_v0_ref(struct upload_pack_data *data, |
1237 | | const char *refname, const char *refname_nons, |
1238 | | const struct object_id *oid) |
1239 | 0 | { |
1240 | 0 | static const char *capabilities = "multi_ack thin-pack side-band" |
1241 | 0 | " side-band-64k ofs-delta shallow deepen-since deepen-not" |
1242 | 0 | " deepen-relative no-progress include-tag multi_ack_detailed"; |
1243 | 0 | struct object_id peeled; |
1244 | |
|
1245 | 0 | if (mark_our_ref(refname_nons, refname, oid, &data->hidden_refs)) |
1246 | 0 | return; |
1247 | | |
1248 | 0 | if (capabilities) { |
1249 | 0 | struct strbuf symref_info = STRBUF_INIT; |
1250 | 0 | struct strbuf session_id = STRBUF_INIT; |
1251 | |
|
1252 | 0 | format_symref_info(&symref_info, &data->symref); |
1253 | 0 | format_session_id(&session_id, data); |
1254 | 0 | packet_fwrite_fmt(stdout, "%s %s%c%s%s%s%s%s%s%s object-format=%s agent=%s\n", |
1255 | 0 | oid_to_hex(oid), refname_nons, |
1256 | 0 | 0, capabilities, |
1257 | 0 | (data->allow_uor & ALLOW_TIP_SHA1) ? |
1258 | 0 | " allow-tip-sha1-in-want" : "", |
1259 | 0 | (data->allow_uor & ALLOW_REACHABLE_SHA1) ? |
1260 | 0 | " allow-reachable-sha1-in-want" : "", |
1261 | 0 | data->no_done ? " no-done" : "", |
1262 | 0 | symref_info.buf, |
1263 | 0 | data->allow_filter ? " filter" : "", |
1264 | 0 | session_id.buf, |
1265 | 0 | the_hash_algo->name, |
1266 | 0 | git_user_agent_sanitized()); |
1267 | 0 | strbuf_release(&symref_info); |
1268 | 0 | strbuf_release(&session_id); |
1269 | 0 | data->sent_capabilities = 1; |
1270 | 0 | } else { |
1271 | 0 | packet_fwrite_fmt(stdout, "%s %s\n", oid_to_hex(oid), refname_nons); |
1272 | 0 | } |
1273 | 0 | capabilities = NULL; |
1274 | 0 | if (!peel_iterated_oid(the_repository, oid, &peeled)) |
1275 | 0 | packet_fwrite_fmt(stdout, "%s %s^{}\n", oid_to_hex(&peeled), refname_nons); |
1276 | 0 | return; |
1277 | 0 | } |
1278 | | |
1279 | | static int send_ref(const char *refname, const char *referent UNUSED, const struct object_id *oid, |
1280 | | int flag UNUSED, void *cb_data) |
1281 | 0 | { |
1282 | 0 | write_v0_ref(cb_data, refname, strip_namespace(refname), oid); |
1283 | 0 | return 0; |
1284 | 0 | } |
1285 | | |
1286 | | static int find_symref(const char *refname, const char *referent UNUSED, |
1287 | | const struct object_id *oid UNUSED, |
1288 | | int flag, void *cb_data) |
1289 | 0 | { |
1290 | 0 | const char *symref_target; |
1291 | 0 | struct string_list_item *item; |
1292 | |
|
1293 | 0 | if ((flag & REF_ISSYMREF) == 0) |
1294 | 0 | return 0; |
1295 | 0 | symref_target = refs_resolve_ref_unsafe(get_main_ref_store(the_repository), |
1296 | 0 | refname, 0, NULL, &flag); |
1297 | 0 | if (!symref_target || (flag & REF_ISSYMREF) == 0) |
1298 | 0 | die("'%s' is a symref but it is not?", refname); |
1299 | 0 | item = string_list_append(cb_data, strip_namespace(refname)); |
1300 | 0 | item->util = xstrdup(strip_namespace(symref_target)); |
1301 | 0 | return 0; |
1302 | 0 | } |
1303 | | |
1304 | | static int parse_object_filter_config(const char *var, const char *value, |
1305 | | const struct key_value_info *kvi, |
1306 | | struct upload_pack_data *data) |
1307 | 0 | { |
1308 | 0 | struct strbuf buf = STRBUF_INIT; |
1309 | 0 | const char *sub, *key; |
1310 | 0 | size_t sub_len; |
1311 | |
|
1312 | 0 | if (parse_config_key(var, "uploadpackfilter", &sub, &sub_len, &key)) |
1313 | 0 | return 0; |
1314 | | |
1315 | 0 | if (!sub) { |
1316 | 0 | if (!strcmp(key, "allow")) |
1317 | 0 | data->allow_filter_fallback = git_config_bool(var, value); |
1318 | 0 | return 0; |
1319 | 0 | } |
1320 | | |
1321 | 0 | strbuf_add(&buf, sub, sub_len); |
1322 | |
|
1323 | 0 | if (!strcmp(key, "allow")) |
1324 | 0 | string_list_insert(&data->allowed_filters, buf.buf)->util = |
1325 | 0 | (void *)(intptr_t)git_config_bool(var, value); |
1326 | 0 | else if (!strcmp(buf.buf, "tree") && !strcmp(key, "maxdepth")) { |
1327 | 0 | if (!value) { |
1328 | 0 | strbuf_release(&buf); |
1329 | 0 | return config_error_nonbool(var); |
1330 | 0 | } |
1331 | 0 | string_list_insert(&data->allowed_filters, buf.buf)->util = |
1332 | 0 | (void *)(intptr_t)1; |
1333 | 0 | data->tree_filter_max_depth = git_config_ulong(var, value, |
1334 | 0 | kvi); |
1335 | 0 | } |
1336 | | |
1337 | 0 | strbuf_release(&buf); |
1338 | 0 | return 0; |
1339 | 0 | } |
1340 | | |
1341 | | static int upload_pack_config(const char *var, const char *value, |
1342 | | const struct config_context *ctx, |
1343 | | void *cb_data) |
1344 | 0 | { |
1345 | 0 | struct upload_pack_data *data = cb_data; |
1346 | |
|
1347 | 0 | if (!strcmp("uploadpack.allowtipsha1inwant", var)) { |
1348 | 0 | if (git_config_bool(var, value)) |
1349 | 0 | data->allow_uor |= ALLOW_TIP_SHA1; |
1350 | 0 | else |
1351 | 0 | data->allow_uor &= ~ALLOW_TIP_SHA1; |
1352 | 0 | } else if (!strcmp("uploadpack.allowreachablesha1inwant", var)) { |
1353 | 0 | if (git_config_bool(var, value)) |
1354 | 0 | data->allow_uor |= ALLOW_REACHABLE_SHA1; |
1355 | 0 | else |
1356 | 0 | data->allow_uor &= ~ALLOW_REACHABLE_SHA1; |
1357 | 0 | } else if (!strcmp("uploadpack.allowanysha1inwant", var)) { |
1358 | 0 | if (git_config_bool(var, value)) |
1359 | 0 | data->allow_uor |= ALLOW_ANY_SHA1; |
1360 | 0 | else |
1361 | 0 | data->allow_uor &= ~ALLOW_ANY_SHA1; |
1362 | 0 | } else if (!strcmp("uploadpack.keepalive", var)) { |
1363 | 0 | data->keepalive = git_config_int(var, value, ctx->kvi); |
1364 | 0 | if (!data->keepalive) |
1365 | 0 | data->keepalive = -1; |
1366 | 0 | } else if (!strcmp("uploadpack.allowfilter", var)) { |
1367 | 0 | data->allow_filter = git_config_bool(var, value); |
1368 | 0 | } else if (!strcmp("uploadpack.allowrefinwant", var)) { |
1369 | 0 | data->allow_ref_in_want = git_config_bool(var, value); |
1370 | 0 | } else if (!strcmp("uploadpack.allowsidebandall", var)) { |
1371 | 0 | data->allow_sideband_all = git_config_bool(var, value); |
1372 | 0 | } else if (!strcmp("uploadpack.blobpackfileuri", var)) { |
1373 | 0 | if (value) |
1374 | 0 | data->allow_packfile_uris = 1; |
1375 | 0 | } else if (!strcmp("core.precomposeunicode", var)) { |
1376 | 0 | precomposed_unicode = git_config_bool(var, value); |
1377 | 0 | } else if (!strcmp("transfer.advertisesid", var)) { |
1378 | 0 | data->advertise_sid = git_config_bool(var, value); |
1379 | 0 | } |
1380 | |
|
1381 | 0 | if (parse_object_filter_config(var, value, ctx->kvi, data) < 0) |
1382 | 0 | return -1; |
1383 | | |
1384 | 0 | return parse_hide_refs_config(var, value, "uploadpack", &data->hidden_refs); |
1385 | 0 | } |
1386 | | |
1387 | | static int upload_pack_protected_config(const char *var, const char *value, |
1388 | | const struct config_context *ctx UNUSED, |
1389 | | void *cb_data) |
1390 | 0 | { |
1391 | 0 | struct upload_pack_data *data = cb_data; |
1392 | |
|
1393 | 0 | if (!strcmp("uploadpack.packobjectshook", var)) |
1394 | 0 | return git_config_string(&data->pack_objects_hook, var, value); |
1395 | 0 | return 0; |
1396 | 0 | } |
1397 | | |
1398 | | static void get_upload_pack_config(struct repository *r, |
1399 | | struct upload_pack_data *data) |
1400 | 0 | { |
1401 | 0 | repo_config(r, upload_pack_config, data); |
1402 | 0 | git_protected_config(upload_pack_protected_config, data); |
1403 | |
|
1404 | 0 | data->allow_sideband_all |= git_env_bool("GIT_TEST_SIDEBAND_ALL", 0); |
1405 | 0 | } |
1406 | | |
1407 | | void upload_pack(const int advertise_refs, const int stateless_rpc, |
1408 | | const int timeout) |
1409 | 0 | { |
1410 | 0 | struct packet_reader reader; |
1411 | 0 | struct upload_pack_data data; |
1412 | |
|
1413 | 0 | upload_pack_data_init(&data); |
1414 | 0 | get_upload_pack_config(the_repository, &data); |
1415 | |
|
1416 | 0 | data.stateless_rpc = stateless_rpc; |
1417 | 0 | data.timeout = timeout; |
1418 | 0 | if (data.timeout) |
1419 | 0 | data.daemon_mode = 1; |
1420 | |
|
1421 | 0 | refs_head_ref_namespaced(get_main_ref_store(the_repository), |
1422 | 0 | find_symref, &data.symref); |
1423 | |
|
1424 | 0 | if (advertise_refs || !data.stateless_rpc) { |
1425 | 0 | reset_timeout(data.timeout); |
1426 | 0 | if (advertise_refs) |
1427 | 0 | data.no_done = 1; |
1428 | 0 | refs_head_ref_namespaced(get_main_ref_store(the_repository), |
1429 | 0 | send_ref, &data); |
1430 | 0 | for_each_namespaced_ref_1(send_ref, &data); |
1431 | 0 | if (!data.sent_capabilities) { |
1432 | 0 | const char *refname = "capabilities^{}"; |
1433 | 0 | write_v0_ref(&data, refname, refname, null_oid()); |
1434 | 0 | } |
1435 | | /* |
1436 | | * fflush stdout before calling advertise_shallow_grafts because send_ref |
1437 | | * uses stdio. |
1438 | | */ |
1439 | 0 | fflush_or_die(stdout); |
1440 | 0 | advertise_shallow_grafts(1); |
1441 | 0 | packet_flush(1); |
1442 | 0 | } else { |
1443 | 0 | refs_head_ref_namespaced(get_main_ref_store(the_repository), |
1444 | 0 | check_ref, &data); |
1445 | 0 | for_each_namespaced_ref_1(check_ref, &data); |
1446 | 0 | } |
1447 | |
|
1448 | 0 | if (!advertise_refs) { |
1449 | 0 | packet_reader_init(&reader, 0, NULL, 0, |
1450 | 0 | PACKET_READ_CHOMP_NEWLINE | |
1451 | 0 | PACKET_READ_DIE_ON_ERR_PACKET); |
1452 | |
|
1453 | 0 | receive_needs(&data, &reader); |
1454 | | |
1455 | | /* |
1456 | | * An EOF at this exact point in negotiation should be |
1457 | | * acceptable from stateless clients as they will consume the |
1458 | | * shallow list before doing subsequent rpc with haves/etc. |
1459 | | */ |
1460 | 0 | if (data.stateless_rpc) |
1461 | 0 | reader.options |= PACKET_READ_GENTLE_ON_EOF; |
1462 | |
|
1463 | 0 | if (data.want_obj.nr && |
1464 | 0 | packet_reader_peek(&reader) != PACKET_READ_EOF) { |
1465 | 0 | reader.options &= ~PACKET_READ_GENTLE_ON_EOF; |
1466 | 0 | get_common_commits(&data, &reader); |
1467 | 0 | create_pack_file(&data, NULL); |
1468 | 0 | } |
1469 | 0 | } |
1470 | |
|
1471 | 0 | upload_pack_data_clear(&data); |
1472 | 0 | } |
1473 | | |
1474 | | static int parse_want(struct packet_writer *writer, const char *line, |
1475 | | struct object_array *want_obj) |
1476 | 0 | { |
1477 | 0 | const char *arg; |
1478 | 0 | if (skip_prefix(line, "want ", &arg)) { |
1479 | 0 | struct object_id oid; |
1480 | 0 | struct object *o; |
1481 | |
|
1482 | 0 | if (get_oid_hex(arg, &oid)) |
1483 | 0 | die("git upload-pack: protocol error, " |
1484 | 0 | "expected to get oid, not '%s'", line); |
1485 | | |
1486 | 0 | o = parse_object_with_flags(the_repository, &oid, |
1487 | 0 | PARSE_OBJECT_SKIP_HASH_CHECK | |
1488 | 0 | PARSE_OBJECT_DISCARD_TREE); |
1489 | |
|
1490 | 0 | if (!o) { |
1491 | 0 | packet_writer_error(writer, |
1492 | 0 | "upload-pack: not our ref %s", |
1493 | 0 | oid_to_hex(&oid)); |
1494 | 0 | die("git upload-pack: not our ref %s", |
1495 | 0 | oid_to_hex(&oid)); |
1496 | 0 | } |
1497 | | |
1498 | 0 | if (!(o->flags & WANTED)) { |
1499 | 0 | o->flags |= WANTED; |
1500 | 0 | add_object_array(o, NULL, want_obj); |
1501 | 0 | } |
1502 | |
|
1503 | 0 | return 1; |
1504 | 0 | } |
1505 | | |
1506 | 0 | return 0; |
1507 | 0 | } |
1508 | | |
1509 | | static int parse_want_ref(struct packet_writer *writer, const char *line, |
1510 | | struct strmap *wanted_refs, |
1511 | | struct strvec *hidden_refs, |
1512 | | struct object_array *want_obj) |
1513 | 0 | { |
1514 | 0 | const char *refname_nons; |
1515 | 0 | if (skip_prefix(line, "want-ref ", &refname_nons)) { |
1516 | 0 | struct object_id oid; |
1517 | 0 | struct object *o = NULL; |
1518 | 0 | struct strbuf refname = STRBUF_INIT; |
1519 | |
|
1520 | 0 | strbuf_addf(&refname, "%s%s", get_git_namespace(), refname_nons); |
1521 | 0 | if (ref_is_hidden(refname_nons, refname.buf, hidden_refs) || |
1522 | 0 | refs_read_ref(get_main_ref_store(the_repository), refname.buf, &oid)) { |
1523 | 0 | packet_writer_error(writer, "unknown ref %s", refname_nons); |
1524 | 0 | die("unknown ref %s", refname_nons); |
1525 | 0 | } |
1526 | 0 | strbuf_release(&refname); |
1527 | |
|
1528 | 0 | if (strmap_put(wanted_refs, refname_nons, oiddup(&oid))) { |
1529 | 0 | packet_writer_error(writer, "duplicate want-ref %s", |
1530 | 0 | refname_nons); |
1531 | 0 | die("duplicate want-ref %s", refname_nons); |
1532 | 0 | } |
1533 | | |
1534 | 0 | if (!starts_with(refname_nons, "refs/tags/")) { |
1535 | 0 | struct commit *commit = lookup_commit_in_graph(the_repository, &oid); |
1536 | 0 | if (commit) |
1537 | 0 | o = &commit->object; |
1538 | 0 | } |
1539 | |
|
1540 | 0 | if (!o) |
1541 | 0 | o = parse_object_or_die(&oid, refname_nons); |
1542 | |
|
1543 | 0 | if (!(o->flags & WANTED)) { |
1544 | 0 | o->flags |= WANTED; |
1545 | 0 | add_object_array(o, NULL, want_obj); |
1546 | 0 | } |
1547 | |
|
1548 | 0 | return 1; |
1549 | 0 | } |
1550 | | |
1551 | 0 | return 0; |
1552 | 0 | } |
1553 | | |
1554 | | static int parse_have(const char *line, struct upload_pack_data *data) |
1555 | 0 | { |
1556 | 0 | const char *arg; |
1557 | 0 | if (skip_prefix(line, "have ", &arg)) { |
1558 | 0 | struct object_id oid; |
1559 | |
|
1560 | 0 | got_oid(data, arg, &oid); |
1561 | 0 | data->seen_haves = 1; |
1562 | 0 | return 1; |
1563 | 0 | } |
1564 | | |
1565 | 0 | return 0; |
1566 | 0 | } |
1567 | | |
1568 | | static void trace2_fetch_info(struct upload_pack_data *data) |
1569 | 0 | { |
1570 | 0 | struct json_writer jw = JSON_WRITER_INIT; |
1571 | |
|
1572 | 0 | jw_object_begin(&jw, 0); |
1573 | 0 | jw_object_intmax(&jw, "haves", data->have_obj.nr); |
1574 | 0 | jw_object_intmax(&jw, "wants", data->want_obj.nr); |
1575 | 0 | jw_object_intmax(&jw, "want-refs", strmap_get_size(&data->wanted_refs)); |
1576 | 0 | jw_object_intmax(&jw, "depth", data->depth); |
1577 | 0 | jw_object_intmax(&jw, "shallows", data->shallows.nr); |
1578 | 0 | jw_object_bool(&jw, "deepen-since", data->deepen_since); |
1579 | 0 | jw_object_intmax(&jw, "deepen-not", oidset_size(&data->deepen_not)); |
1580 | 0 | jw_object_bool(&jw, "deepen-relative", data->deepen_relative); |
1581 | 0 | if (data->filter_options.choice) |
1582 | 0 | jw_object_string(&jw, "filter", list_object_filter_config_name(data->filter_options.choice)); |
1583 | 0 | else |
1584 | 0 | jw_object_null(&jw, "filter"); |
1585 | 0 | jw_end(&jw); |
1586 | |
|
1587 | 0 | trace2_data_json("upload-pack", the_repository, "fetch-info", &jw); |
1588 | |
|
1589 | 0 | jw_release(&jw); |
1590 | 0 | } |
1591 | | |
1592 | | static void process_args(struct packet_reader *request, |
1593 | | struct upload_pack_data *data) |
1594 | 0 | { |
1595 | 0 | while (packet_reader_read(request) == PACKET_READ_NORMAL) { |
1596 | 0 | const char *arg = request->line; |
1597 | 0 | const char *p; |
1598 | | |
1599 | | /* process want */ |
1600 | 0 | if (parse_want(&data->writer, arg, &data->want_obj)) |
1601 | 0 | continue; |
1602 | 0 | if (data->allow_ref_in_want && |
1603 | 0 | parse_want_ref(&data->writer, arg, &data->wanted_refs, |
1604 | 0 | &data->hidden_refs, &data->want_obj)) |
1605 | 0 | continue; |
1606 | | /* process have line */ |
1607 | 0 | if (parse_have(arg, data)) |
1608 | 0 | continue; |
1609 | | |
1610 | | /* process args like thin-pack */ |
1611 | 0 | if (!strcmp(arg, "thin-pack")) { |
1612 | 0 | data->use_thin_pack = 1; |
1613 | 0 | continue; |
1614 | 0 | } |
1615 | 0 | if (!strcmp(arg, "ofs-delta")) { |
1616 | 0 | data->use_ofs_delta = 1; |
1617 | 0 | continue; |
1618 | 0 | } |
1619 | 0 | if (!strcmp(arg, "no-progress")) { |
1620 | 0 | data->no_progress = 1; |
1621 | 0 | continue; |
1622 | 0 | } |
1623 | 0 | if (!strcmp(arg, "include-tag")) { |
1624 | 0 | data->use_include_tag = 1; |
1625 | 0 | continue; |
1626 | 0 | } |
1627 | 0 | if (!strcmp(arg, "done")) { |
1628 | 0 | data->done = 1; |
1629 | 0 | continue; |
1630 | 0 | } |
1631 | 0 | if (!strcmp(arg, "wait-for-done")) { |
1632 | 0 | data->wait_for_done = 1; |
1633 | 0 | continue; |
1634 | 0 | } |
1635 | | |
1636 | | /* Shallow related arguments */ |
1637 | 0 | if (process_shallow(arg, &data->shallows)) |
1638 | 0 | continue; |
1639 | 0 | if (process_deepen(arg, &data->depth)) |
1640 | 0 | continue; |
1641 | 0 | if (process_deepen_since(arg, &data->deepen_since, |
1642 | 0 | &data->deepen_rev_list)) |
1643 | 0 | continue; |
1644 | 0 | if (process_deepen_not(arg, &data->deepen_not, |
1645 | 0 | &data->deepen_rev_list)) |
1646 | 0 | continue; |
1647 | 0 | if (!strcmp(arg, "deepen-relative")) { |
1648 | 0 | data->deepen_relative = 1; |
1649 | 0 | continue; |
1650 | 0 | } |
1651 | | |
1652 | 0 | if (data->allow_filter && skip_prefix(arg, "filter ", &p)) { |
1653 | 0 | list_objects_filter_die_if_populated(&data->filter_options); |
1654 | 0 | parse_list_objects_filter(&data->filter_options, p); |
1655 | 0 | die_if_using_banned_filter(data); |
1656 | 0 | continue; |
1657 | 0 | } |
1658 | | |
1659 | 0 | if (data->allow_sideband_all && |
1660 | 0 | !strcmp(arg, "sideband-all")) { |
1661 | 0 | data->writer.use_sideband = 1; |
1662 | 0 | continue; |
1663 | 0 | } |
1664 | | |
1665 | 0 | if (data->allow_packfile_uris && |
1666 | 0 | skip_prefix(arg, "packfile-uris ", &p)) { |
1667 | 0 | if (data->uri_protocols.nr) |
1668 | 0 | send_err_and_die(data, |
1669 | 0 | "multiple packfile-uris lines forbidden"); |
1670 | 0 | string_list_split(&data->uri_protocols, p, ',', -1); |
1671 | 0 | continue; |
1672 | 0 | } |
1673 | | |
1674 | | /* ignore unknown lines maybe? */ |
1675 | 0 | die("unexpected line: '%s'", arg); |
1676 | 0 | } |
1677 | | |
1678 | 0 | if (data->uri_protocols.nr && !data->writer.use_sideband) |
1679 | 0 | string_list_clear(&data->uri_protocols, 0); |
1680 | |
|
1681 | 0 | if (request->status != PACKET_READ_FLUSH) |
1682 | 0 | die(_("expected flush after fetch arguments")); |
1683 | | |
1684 | 0 | if (trace2_is_enabled()) |
1685 | 0 | trace2_fetch_info(data); |
1686 | 0 | } |
1687 | | |
1688 | | static int send_acks(struct upload_pack_data *data, struct object_array *acks) |
1689 | 0 | { |
1690 | 0 | int i; |
1691 | |
|
1692 | 0 | packet_writer_write(&data->writer, "acknowledgments\n"); |
1693 | | |
1694 | | /* Send Acks */ |
1695 | 0 | if (!acks->nr) |
1696 | 0 | packet_writer_write(&data->writer, "NAK\n"); |
1697 | |
|
1698 | 0 | for (i = 0; i < acks->nr; i++) { |
1699 | 0 | packet_writer_write(&data->writer, "ACK %s\n", |
1700 | 0 | oid_to_hex(&acks->objects[i].item->oid)); |
1701 | 0 | } |
1702 | |
|
1703 | 0 | if (!data->wait_for_done && ok_to_give_up(data)) { |
1704 | | /* Send Ready */ |
1705 | 0 | packet_writer_write(&data->writer, "ready\n"); |
1706 | 0 | return 1; |
1707 | 0 | } |
1708 | | |
1709 | 0 | return 0; |
1710 | 0 | } |
1711 | | |
1712 | | static int process_haves_and_send_acks(struct upload_pack_data *data) |
1713 | 0 | { |
1714 | 0 | int ret = 0; |
1715 | |
|
1716 | 0 | if (data->done) { |
1717 | 0 | ret = 1; |
1718 | 0 | } else if (send_acks(data, &data->have_obj)) { |
1719 | 0 | packet_writer_delim(&data->writer); |
1720 | 0 | ret = 1; |
1721 | 0 | } else { |
1722 | | /* Add Flush */ |
1723 | 0 | packet_writer_flush(&data->writer); |
1724 | 0 | ret = 0; |
1725 | 0 | } |
1726 | |
|
1727 | 0 | return ret; |
1728 | 0 | } |
1729 | | |
1730 | | static void send_wanted_ref_info(struct upload_pack_data *data) |
1731 | 0 | { |
1732 | 0 | struct hashmap_iter iter; |
1733 | 0 | const struct strmap_entry *e; |
1734 | |
|
1735 | 0 | if (strmap_empty(&data->wanted_refs)) |
1736 | 0 | return; |
1737 | | |
1738 | 0 | packet_writer_write(&data->writer, "wanted-refs\n"); |
1739 | |
|
1740 | 0 | strmap_for_each_entry(&data->wanted_refs, &iter, e) { |
1741 | 0 | packet_writer_write(&data->writer, "%s %s\n", |
1742 | 0 | oid_to_hex(e->value), |
1743 | 0 | e->key); |
1744 | 0 | } |
1745 | |
|
1746 | 0 | packet_writer_delim(&data->writer); |
1747 | 0 | } |
1748 | | |
1749 | | static void send_shallow_info(struct upload_pack_data *data) |
1750 | 0 | { |
1751 | | /* No shallow info needs to be sent */ |
1752 | 0 | if (!data->depth && !data->deepen_rev_list && !data->shallows.nr && |
1753 | 0 | !is_repository_shallow(the_repository)) |
1754 | 0 | return; |
1755 | | |
1756 | 0 | packet_writer_write(&data->writer, "shallow-info\n"); |
1757 | |
|
1758 | 0 | if (!send_shallow_list(data) && |
1759 | 0 | is_repository_shallow(the_repository)) |
1760 | 0 | deepen(data, INFINITE_DEPTH); |
1761 | |
|
1762 | 0 | packet_delim(1); |
1763 | 0 | } |
1764 | | |
1765 | | enum fetch_state { |
1766 | | FETCH_PROCESS_ARGS = 0, |
1767 | | FETCH_SEND_ACKS, |
1768 | | FETCH_SEND_PACK, |
1769 | | FETCH_DONE, |
1770 | | }; |
1771 | | |
1772 | | int upload_pack_v2(struct repository *r, struct packet_reader *request) |
1773 | 0 | { |
1774 | 0 | enum fetch_state state = FETCH_PROCESS_ARGS; |
1775 | 0 | struct upload_pack_data data; |
1776 | |
|
1777 | 0 | clear_object_flags(ALL_FLAGS); |
1778 | |
|
1779 | 0 | upload_pack_data_init(&data); |
1780 | 0 | data.use_sideband = LARGE_PACKET_MAX; |
1781 | 0 | get_upload_pack_config(r, &data); |
1782 | |
|
1783 | 0 | while (state != FETCH_DONE) { |
1784 | 0 | switch (state) { |
1785 | 0 | case FETCH_PROCESS_ARGS: |
1786 | 0 | process_args(request, &data); |
1787 | |
|
1788 | 0 | if (!data.want_obj.nr && !data.wait_for_done) { |
1789 | | /* |
1790 | | * Request didn't contain any 'want' lines (and |
1791 | | * the request does not contain |
1792 | | * "wait-for-done", in which it is reasonable |
1793 | | * to just send 'have's without 'want's); guess |
1794 | | * they didn't want anything. |
1795 | | */ |
1796 | 0 | state = FETCH_DONE; |
1797 | 0 | } else if (data.seen_haves) { |
1798 | | /* |
1799 | | * Request had 'have' lines, so lets ACK them. |
1800 | | */ |
1801 | 0 | state = FETCH_SEND_ACKS; |
1802 | 0 | } else { |
1803 | | /* |
1804 | | * Request had 'want's but no 'have's so we can |
1805 | | * immedietly go to construct and send a pack. |
1806 | | */ |
1807 | 0 | state = FETCH_SEND_PACK; |
1808 | 0 | } |
1809 | 0 | break; |
1810 | 0 | case FETCH_SEND_ACKS: |
1811 | 0 | if (process_haves_and_send_acks(&data)) |
1812 | 0 | state = FETCH_SEND_PACK; |
1813 | 0 | else |
1814 | 0 | state = FETCH_DONE; |
1815 | 0 | break; |
1816 | 0 | case FETCH_SEND_PACK: |
1817 | 0 | send_wanted_ref_info(&data); |
1818 | 0 | send_shallow_info(&data); |
1819 | |
|
1820 | 0 | if (data.uri_protocols.nr) { |
1821 | 0 | create_pack_file(&data, &data.uri_protocols); |
1822 | 0 | } else { |
1823 | 0 | packet_writer_write(&data.writer, "packfile\n"); |
1824 | 0 | create_pack_file(&data, NULL); |
1825 | 0 | } |
1826 | 0 | state = FETCH_DONE; |
1827 | 0 | break; |
1828 | 0 | case FETCH_DONE: |
1829 | 0 | continue; |
1830 | 0 | } |
1831 | 0 | } |
1832 | | |
1833 | 0 | upload_pack_data_clear(&data); |
1834 | 0 | return 0; |
1835 | 0 | } |
1836 | | |
1837 | | int upload_pack_advertise(struct repository *r, |
1838 | | struct strbuf *value) |
1839 | 0 | { |
1840 | 0 | struct upload_pack_data data; |
1841 | |
|
1842 | 0 | upload_pack_data_init(&data); |
1843 | 0 | get_upload_pack_config(r, &data); |
1844 | |
|
1845 | 0 | if (value) { |
1846 | 0 | strbuf_addstr(value, "shallow wait-for-done"); |
1847 | |
|
1848 | 0 | if (data.allow_filter) |
1849 | 0 | strbuf_addstr(value, " filter"); |
1850 | |
|
1851 | 0 | if (data.allow_ref_in_want) |
1852 | 0 | strbuf_addstr(value, " ref-in-want"); |
1853 | |
|
1854 | 0 | if (data.allow_sideband_all) |
1855 | 0 | strbuf_addstr(value, " sideband-all"); |
1856 | |
|
1857 | 0 | if (data.allow_packfile_uris) |
1858 | 0 | strbuf_addstr(value, " packfile-uris"); |
1859 | 0 | } |
1860 | |
|
1861 | 0 | upload_pack_data_clear(&data); |
1862 | |
|
1863 | 0 | return 1; |
1864 | 0 | } |