/src/libxml2-2.12.5/xmlIO.c
Line | Count | Source (jump to first uncovered line) |
1 | | /* |
2 | | * xmlIO.c : implementation of the I/O interfaces used by the parser |
3 | | * |
4 | | * See Copyright for the status of this software. |
5 | | * |
6 | | * daniel@veillard.com |
7 | | * |
8 | | * 14 Nov 2000 ht - for VMS, truncated name of long functions to under 32 char |
9 | | */ |
10 | | |
11 | | #define IN_LIBXML |
12 | | #include "libxml.h" |
13 | | |
14 | | #include <string.h> |
15 | | #include <stdlib.h> |
16 | | #include <errno.h> |
17 | | |
18 | | #ifdef HAVE_SYS_STAT_H |
19 | | #include <sys/stat.h> |
20 | | #endif |
21 | | #ifdef HAVE_FCNTL_H |
22 | | #include <fcntl.h> |
23 | | #endif |
24 | | #ifdef HAVE_UNISTD_H |
25 | | #include <unistd.h> |
26 | | #endif |
27 | | #ifdef LIBXML_ZLIB_ENABLED |
28 | | #include <zlib.h> |
29 | | #endif |
30 | | #ifdef LIBXML_LZMA_ENABLED |
31 | | #include <lzma.h> |
32 | | #endif |
33 | | |
34 | | #if defined(_WIN32) |
35 | | #define WIN32_LEAN_AND_MEAN |
36 | | #include <windows.h> |
37 | | #include <io.h> |
38 | | #include <direct.h> |
39 | | #endif |
40 | | |
41 | | #ifndef S_ISDIR |
42 | | # ifdef _S_ISDIR |
43 | | # define S_ISDIR(x) _S_ISDIR(x) |
44 | | # elif defined(S_IFDIR) |
45 | | # ifdef S_IFMT |
46 | | # define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR) |
47 | | # elif defined(_S_IFMT) |
48 | | # define S_ISDIR(m) (((m) & _S_IFMT) == S_IFDIR) |
49 | | # endif |
50 | | # endif |
51 | | #endif |
52 | | |
53 | | #include <libxml/xmlIO.h> |
54 | | #include <libxml/xmlmemory.h> |
55 | | #include <libxml/parser.h> |
56 | | #include <libxml/parserInternals.h> |
57 | | #include <libxml/uri.h> |
58 | | #include <libxml/nanohttp.h> |
59 | | #include <libxml/nanoftp.h> |
60 | | #include <libxml/xmlerror.h> |
61 | | #ifdef LIBXML_CATALOG_ENABLED |
62 | | #include <libxml/catalog.h> |
63 | | #endif |
64 | | |
65 | | #include "private/buf.h" |
66 | | #include "private/enc.h" |
67 | | #include "private/error.h" |
68 | | #include "private/io.h" |
69 | | #include "private/parser.h" |
70 | | |
71 | | /* #define VERBOSE_FAILURE */ |
72 | | |
73 | 0 | #define MINLEN 4000 |
74 | | |
75 | | /* |
76 | | * Input I/O callback sets |
77 | | */ |
78 | | typedef struct _xmlInputCallback { |
79 | | xmlInputMatchCallback matchcallback; |
80 | | xmlInputOpenCallback opencallback; |
81 | | xmlInputReadCallback readcallback; |
82 | | xmlInputCloseCallback closecallback; |
83 | | } xmlInputCallback; |
84 | | |
85 | 2 | #define MAX_INPUT_CALLBACK 15 |
86 | | |
87 | | static xmlInputCallback xmlInputCallbackTable[MAX_INPUT_CALLBACK]; |
88 | | static int xmlInputCallbackNr = 0; |
89 | | static int xmlInputCallbackInitialized = 0; |
90 | | |
91 | | #ifdef LIBXML_OUTPUT_ENABLED |
92 | | /* |
93 | | * Output I/O callback sets |
94 | | */ |
95 | | typedef struct _xmlOutputCallback { |
96 | | xmlOutputMatchCallback matchcallback; |
97 | | xmlOutputOpenCallback opencallback; |
98 | | xmlOutputWriteCallback writecallback; |
99 | | xmlOutputCloseCallback closecallback; |
100 | | } xmlOutputCallback; |
101 | | |
102 | 2 | #define MAX_OUTPUT_CALLBACK 15 |
103 | | |
104 | | static xmlOutputCallback xmlOutputCallbackTable[MAX_OUTPUT_CALLBACK]; |
105 | | static int xmlOutputCallbackNr = 0; |
106 | | static int xmlOutputCallbackInitialized = 0; |
107 | | #endif /* LIBXML_OUTPUT_ENABLED */ |
108 | | |
109 | | /************************************************************************ |
110 | | * * |
111 | | * Tree memory error handler * |
112 | | * * |
113 | | ************************************************************************/ |
114 | | |
115 | | static const char* const IOerr[] = { |
116 | | "Unknown IO error", /* UNKNOWN */ |
117 | | "Permission denied", /* EACCES */ |
118 | | "Resource temporarily unavailable",/* EAGAIN */ |
119 | | "Bad file descriptor", /* EBADF */ |
120 | | "Bad message", /* EBADMSG */ |
121 | | "Resource busy", /* EBUSY */ |
122 | | "Operation canceled", /* ECANCELED */ |
123 | | "No child processes", /* ECHILD */ |
124 | | "Resource deadlock avoided",/* EDEADLK */ |
125 | | "Domain error", /* EDOM */ |
126 | | "File exists", /* EEXIST */ |
127 | | "Bad address", /* EFAULT */ |
128 | | "File too large", /* EFBIG */ |
129 | | "Operation in progress", /* EINPROGRESS */ |
130 | | "Interrupted function call",/* EINTR */ |
131 | | "Invalid argument", /* EINVAL */ |
132 | | "Input/output error", /* EIO */ |
133 | | "Is a directory", /* EISDIR */ |
134 | | "Too many open files", /* EMFILE */ |
135 | | "Too many links", /* EMLINK */ |
136 | | "Inappropriate message buffer length",/* EMSGSIZE */ |
137 | | "Filename too long", /* ENAMETOOLONG */ |
138 | | "Too many open files in system",/* ENFILE */ |
139 | | "No such device", /* ENODEV */ |
140 | | "No such file or directory",/* ENOENT */ |
141 | | "Exec format error", /* ENOEXEC */ |
142 | | "No locks available", /* ENOLCK */ |
143 | | "Not enough space", /* ENOMEM */ |
144 | | "No space left on device", /* ENOSPC */ |
145 | | "Function not implemented", /* ENOSYS */ |
146 | | "Not a directory", /* ENOTDIR */ |
147 | | "Directory not empty", /* ENOTEMPTY */ |
148 | | "Not supported", /* ENOTSUP */ |
149 | | "Inappropriate I/O control operation",/* ENOTTY */ |
150 | | "No such device or address",/* ENXIO */ |
151 | | "Operation not permitted", /* EPERM */ |
152 | | "Broken pipe", /* EPIPE */ |
153 | | "Result too large", /* ERANGE */ |
154 | | "Read-only file system", /* EROFS */ |
155 | | "Invalid seek", /* ESPIPE */ |
156 | | "No such process", /* ESRCH */ |
157 | | "Operation timed out", /* ETIMEDOUT */ |
158 | | "Improper link", /* EXDEV */ |
159 | | "Attempt to load network entity %s", /* XML_IO_NETWORK_ATTEMPT */ |
160 | | "encoder error", /* XML_IO_ENCODER */ |
161 | | "flush error", |
162 | | "write error", |
163 | | "no input", |
164 | | "buffer full", |
165 | | "loading error", |
166 | | "not a socket", /* ENOTSOCK */ |
167 | | "already connected", /* EISCONN */ |
168 | | "connection refused", /* ECONNREFUSED */ |
169 | | "unreachable network", /* ENETUNREACH */ |
170 | | "address in use", /* EADDRINUSE */ |
171 | | "already in use", /* EALREADY */ |
172 | | "unknown address family", /* EAFNOSUPPORT */ |
173 | | }; |
174 | | |
175 | | #if defined(_WIN32) |
176 | | /** |
177 | | * __xmlIOWin32UTF8ToWChar: |
178 | | * @u8String: uft-8 string |
179 | | * |
180 | | * Convert a string from utf-8 to wchar (WINDOWS ONLY!) |
181 | | */ |
182 | | static wchar_t * |
183 | | __xmlIOWin32UTF8ToWChar(const char *u8String) |
184 | | { |
185 | | wchar_t *wString = NULL; |
186 | | |
187 | | if (u8String) { |
188 | | int wLen = |
189 | | MultiByteToWideChar(CP_UTF8, MB_ERR_INVALID_CHARS, u8String, |
190 | | -1, NULL, 0); |
191 | | if (wLen) { |
192 | | wString = xmlMalloc(wLen * sizeof(wchar_t)); |
193 | | if (wString) { |
194 | | if (MultiByteToWideChar |
195 | | (CP_UTF8, 0, u8String, -1, wString, wLen) == 0) { |
196 | | xmlFree(wString); |
197 | | wString = NULL; |
198 | | } |
199 | | } |
200 | | } |
201 | | } |
202 | | |
203 | | return wString; |
204 | | } |
205 | | #endif |
206 | | |
207 | | #if defined(LIBXML_HTTP_ENABLED) && defined(LIBXML_OUTPUT_ENABLED) |
208 | | /** |
209 | | * xmlIOErrMemory: |
210 | | * @extra: extra information |
211 | | * |
212 | | * Handle an out of memory condition |
213 | | */ |
214 | | static void |
215 | | xmlIOErrMemory(const char *extra) |
216 | 0 | { |
217 | 0 | __xmlSimpleError(XML_FROM_IO, XML_ERR_NO_MEMORY, NULL, NULL, extra); |
218 | 0 | } |
219 | | #endif |
220 | | |
221 | | /** |
222 | | * __xmlIOErr: |
223 | | * @code: the error number |
224 | | * @ |
225 | | * @extra: extra information |
226 | | * |
227 | | * Handle an I/O error |
228 | | */ |
229 | | void |
230 | | __xmlIOErr(int domain, int code, const char *extra) |
231 | 0 | { |
232 | 0 | unsigned int idx; |
233 | |
|
234 | 0 | if (code == 0) { |
235 | 0 | if (errno == 0) code = 0; |
236 | 0 | #ifdef EACCES |
237 | 0 | else if (errno == EACCES) code = XML_IO_EACCES; |
238 | 0 | #endif |
239 | 0 | #ifdef EAGAIN |
240 | 0 | else if (errno == EAGAIN) code = XML_IO_EAGAIN; |
241 | 0 | #endif |
242 | 0 | #ifdef EBADF |
243 | 0 | else if (errno == EBADF) code = XML_IO_EBADF; |
244 | 0 | #endif |
245 | 0 | #ifdef EBADMSG |
246 | 0 | else if (errno == EBADMSG) code = XML_IO_EBADMSG; |
247 | 0 | #endif |
248 | 0 | #ifdef EBUSY |
249 | 0 | else if (errno == EBUSY) code = XML_IO_EBUSY; |
250 | 0 | #endif |
251 | 0 | #ifdef ECANCELED |
252 | 0 | else if (errno == ECANCELED) code = XML_IO_ECANCELED; |
253 | 0 | #endif |
254 | 0 | #ifdef ECHILD |
255 | 0 | else if (errno == ECHILD) code = XML_IO_ECHILD; |
256 | 0 | #endif |
257 | 0 | #ifdef EDEADLK |
258 | 0 | else if (errno == EDEADLK) code = XML_IO_EDEADLK; |
259 | 0 | #endif |
260 | 0 | #ifdef EDOM |
261 | 0 | else if (errno == EDOM) code = XML_IO_EDOM; |
262 | 0 | #endif |
263 | 0 | #ifdef EEXIST |
264 | 0 | else if (errno == EEXIST) code = XML_IO_EEXIST; |
265 | 0 | #endif |
266 | 0 | #ifdef EFAULT |
267 | 0 | else if (errno == EFAULT) code = XML_IO_EFAULT; |
268 | 0 | #endif |
269 | 0 | #ifdef EFBIG |
270 | 0 | else if (errno == EFBIG) code = XML_IO_EFBIG; |
271 | 0 | #endif |
272 | 0 | #ifdef EINPROGRESS |
273 | 0 | else if (errno == EINPROGRESS) code = XML_IO_EINPROGRESS; |
274 | 0 | #endif |
275 | 0 | #ifdef EINTR |
276 | 0 | else if (errno == EINTR) code = XML_IO_EINTR; |
277 | 0 | #endif |
278 | 0 | #ifdef EINVAL |
279 | 0 | else if (errno == EINVAL) code = XML_IO_EINVAL; |
280 | 0 | #endif |
281 | 0 | #ifdef EIO |
282 | 0 | else if (errno == EIO) code = XML_IO_EIO; |
283 | 0 | #endif |
284 | 0 | #ifdef EISDIR |
285 | 0 | else if (errno == EISDIR) code = XML_IO_EISDIR; |
286 | 0 | #endif |
287 | 0 | #ifdef EMFILE |
288 | 0 | else if (errno == EMFILE) code = XML_IO_EMFILE; |
289 | 0 | #endif |
290 | 0 | #ifdef EMLINK |
291 | 0 | else if (errno == EMLINK) code = XML_IO_EMLINK; |
292 | 0 | #endif |
293 | 0 | #ifdef EMSGSIZE |
294 | 0 | else if (errno == EMSGSIZE) code = XML_IO_EMSGSIZE; |
295 | 0 | #endif |
296 | 0 | #ifdef ENAMETOOLONG |
297 | 0 | else if (errno == ENAMETOOLONG) code = XML_IO_ENAMETOOLONG; |
298 | 0 | #endif |
299 | 0 | #ifdef ENFILE |
300 | 0 | else if (errno == ENFILE) code = XML_IO_ENFILE; |
301 | 0 | #endif |
302 | 0 | #ifdef ENODEV |
303 | 0 | else if (errno == ENODEV) code = XML_IO_ENODEV; |
304 | 0 | #endif |
305 | 0 | #ifdef ENOENT |
306 | 0 | else if (errno == ENOENT) code = XML_IO_ENOENT; |
307 | 0 | #endif |
308 | 0 | #ifdef ENOEXEC |
309 | 0 | else if (errno == ENOEXEC) code = XML_IO_ENOEXEC; |
310 | 0 | #endif |
311 | 0 | #ifdef ENOLCK |
312 | 0 | else if (errno == ENOLCK) code = XML_IO_ENOLCK; |
313 | 0 | #endif |
314 | 0 | #ifdef ENOMEM |
315 | 0 | else if (errno == ENOMEM) code = XML_IO_ENOMEM; |
316 | 0 | #endif |
317 | 0 | #ifdef ENOSPC |
318 | 0 | else if (errno == ENOSPC) code = XML_IO_ENOSPC; |
319 | 0 | #endif |
320 | 0 | #ifdef ENOSYS |
321 | 0 | else if (errno == ENOSYS) code = XML_IO_ENOSYS; |
322 | 0 | #endif |
323 | 0 | #ifdef ENOTDIR |
324 | 0 | else if (errno == ENOTDIR) code = XML_IO_ENOTDIR; |
325 | 0 | #endif |
326 | 0 | #ifdef ENOTEMPTY |
327 | 0 | else if (errno == ENOTEMPTY) code = XML_IO_ENOTEMPTY; |
328 | 0 | #endif |
329 | 0 | #ifdef ENOTSUP |
330 | 0 | else if (errno == ENOTSUP) code = XML_IO_ENOTSUP; |
331 | 0 | #endif |
332 | 0 | #ifdef ENOTTY |
333 | 0 | else if (errno == ENOTTY) code = XML_IO_ENOTTY; |
334 | 0 | #endif |
335 | 0 | #ifdef ENXIO |
336 | 0 | else if (errno == ENXIO) code = XML_IO_ENXIO; |
337 | 0 | #endif |
338 | 0 | #ifdef EPERM |
339 | 0 | else if (errno == EPERM) code = XML_IO_EPERM; |
340 | 0 | #endif |
341 | 0 | #ifdef EPIPE |
342 | 0 | else if (errno == EPIPE) code = XML_IO_EPIPE; |
343 | 0 | #endif |
344 | 0 | #ifdef ERANGE |
345 | 0 | else if (errno == ERANGE) code = XML_IO_ERANGE; |
346 | 0 | #endif |
347 | 0 | #ifdef EROFS |
348 | 0 | else if (errno == EROFS) code = XML_IO_EROFS; |
349 | 0 | #endif |
350 | 0 | #ifdef ESPIPE |
351 | 0 | else if (errno == ESPIPE) code = XML_IO_ESPIPE; |
352 | 0 | #endif |
353 | 0 | #ifdef ESRCH |
354 | 0 | else if (errno == ESRCH) code = XML_IO_ESRCH; |
355 | 0 | #endif |
356 | 0 | #ifdef ETIMEDOUT |
357 | 0 | else if (errno == ETIMEDOUT) code = XML_IO_ETIMEDOUT; |
358 | 0 | #endif |
359 | 0 | #ifdef EXDEV |
360 | 0 | else if (errno == EXDEV) code = XML_IO_EXDEV; |
361 | 0 | #endif |
362 | 0 | #ifdef ENOTSOCK |
363 | 0 | else if (errno == ENOTSOCK) code = XML_IO_ENOTSOCK; |
364 | 0 | #endif |
365 | 0 | #ifdef EISCONN |
366 | 0 | else if (errno == EISCONN) code = XML_IO_EISCONN; |
367 | 0 | #endif |
368 | 0 | #ifdef ECONNREFUSED |
369 | 0 | else if (errno == ECONNREFUSED) code = XML_IO_ECONNREFUSED; |
370 | 0 | #endif |
371 | 0 | #ifdef ETIMEDOUT |
372 | 0 | else if (errno == ETIMEDOUT) code = XML_IO_ETIMEDOUT; |
373 | 0 | #endif |
374 | 0 | #ifdef ENETUNREACH |
375 | 0 | else if (errno == ENETUNREACH) code = XML_IO_ENETUNREACH; |
376 | 0 | #endif |
377 | 0 | #ifdef EADDRINUSE |
378 | 0 | else if (errno == EADDRINUSE) code = XML_IO_EADDRINUSE; |
379 | 0 | #endif |
380 | 0 | #ifdef EINPROGRESS |
381 | 0 | else if (errno == EINPROGRESS) code = XML_IO_EINPROGRESS; |
382 | 0 | #endif |
383 | 0 | #ifdef EALREADY |
384 | 0 | else if (errno == EALREADY) code = XML_IO_EALREADY; |
385 | 0 | #endif |
386 | 0 | #ifdef EAFNOSUPPORT |
387 | 0 | else if (errno == EAFNOSUPPORT) code = XML_IO_EAFNOSUPPORT; |
388 | 0 | #endif |
389 | 0 | else code = XML_IO_UNKNOWN; |
390 | 0 | } |
391 | 0 | idx = 0; |
392 | 0 | if (code >= XML_IO_UNKNOWN) idx = code - XML_IO_UNKNOWN; |
393 | 0 | if (idx >= (sizeof(IOerr) / sizeof(IOerr[0]))) idx = 0; |
394 | |
|
395 | 0 | __xmlSimpleError(domain, code, NULL, IOerr[idx], extra); |
396 | 0 | } |
397 | | |
398 | | /** |
399 | | * xmlIOErr: |
400 | | * @code: the error number |
401 | | * @extra: extra information |
402 | | * |
403 | | * Handle an I/O error |
404 | | */ |
405 | | static void |
406 | | xmlIOErr(int code, const char *extra) |
407 | 0 | { |
408 | 0 | __xmlIOErr(XML_FROM_IO, code, extra); |
409 | 0 | } |
410 | | |
411 | | /** |
412 | | * __xmlLoaderErr: |
413 | | * @ctx: the parser context |
414 | | * @extra: extra information |
415 | | * |
416 | | * Handle a resource access error |
417 | | */ |
418 | | void |
419 | | __xmlLoaderErr(void *ctx, const char *msg, const char *filename) |
420 | 0 | { |
421 | 0 | xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) ctx; |
422 | 0 | xmlStructuredErrorFunc schannel = NULL; |
423 | 0 | xmlGenericErrorFunc channel = NULL; |
424 | 0 | void *data = NULL; |
425 | 0 | xmlErrorLevel level = XML_ERR_ERROR; |
426 | |
|
427 | 0 | if ((ctxt != NULL) && (ctxt->disableSAX != 0) && |
428 | 0 | (ctxt->instate == XML_PARSER_EOF)) |
429 | 0 | return; |
430 | 0 | if ((ctxt != NULL) && (ctxt->sax != NULL)) { |
431 | 0 | if (ctxt->validate) { |
432 | 0 | channel = ctxt->sax->error; |
433 | 0 | level = XML_ERR_ERROR; |
434 | 0 | } else { |
435 | 0 | channel = ctxt->sax->warning; |
436 | 0 | level = XML_ERR_WARNING; |
437 | 0 | } |
438 | 0 | if (ctxt->sax->initialized == XML_SAX2_MAGIC) |
439 | 0 | schannel = ctxt->sax->serror; |
440 | 0 | data = ctxt->userData; |
441 | 0 | } |
442 | 0 | __xmlRaiseError(schannel, channel, data, ctxt, NULL, XML_FROM_IO, |
443 | 0 | XML_IO_LOAD_ERROR, level, NULL, 0, |
444 | 0 | filename, NULL, NULL, 0, 0, |
445 | 0 | msg, filename); |
446 | |
|
447 | 0 | } |
448 | | |
449 | | /************************************************************************ |
450 | | * * |
451 | | * Tree memory error handler * |
452 | | * * |
453 | | ************************************************************************/ |
454 | | /** |
455 | | * xmlNormalizeWindowsPath: |
456 | | * @path: the input file path |
457 | | * |
458 | | * This function is obsolete. Please see xmlURIFromPath in uri.c for |
459 | | * a better solution. |
460 | | * |
461 | | * Returns a canonicalized version of the path |
462 | | */ |
463 | | xmlChar * |
464 | | xmlNormalizeWindowsPath(const xmlChar *path) |
465 | 0 | { |
466 | 0 | return xmlCanonicPath(path); |
467 | 0 | } |
468 | | |
469 | | /** |
470 | | * xmlCleanupInputCallbacks: |
471 | | * |
472 | | * clears the entire input callback table. this includes the |
473 | | * compiled-in I/O. |
474 | | */ |
475 | | void |
476 | | xmlCleanupInputCallbacks(void) |
477 | 0 | { |
478 | 0 | int i; |
479 | |
|
480 | 0 | if (!xmlInputCallbackInitialized) |
481 | 0 | return; |
482 | | |
483 | 0 | for (i = xmlInputCallbackNr - 1; i >= 0; i--) { |
484 | 0 | xmlInputCallbackTable[i].matchcallback = NULL; |
485 | 0 | xmlInputCallbackTable[i].opencallback = NULL; |
486 | 0 | xmlInputCallbackTable[i].readcallback = NULL; |
487 | 0 | xmlInputCallbackTable[i].closecallback = NULL; |
488 | 0 | } |
489 | |
|
490 | 0 | xmlInputCallbackNr = 0; |
491 | 0 | xmlInputCallbackInitialized = 0; |
492 | 0 | } |
493 | | |
494 | | /** |
495 | | * xmlPopInputCallbacks: |
496 | | * |
497 | | * Clear the top input callback from the input stack. this includes the |
498 | | * compiled-in I/O. |
499 | | * |
500 | | * Returns the number of input callback registered or -1 in case of error. |
501 | | */ |
502 | | int |
503 | | xmlPopInputCallbacks(void) |
504 | 0 | { |
505 | 0 | if (!xmlInputCallbackInitialized) |
506 | 0 | return(-1); |
507 | | |
508 | 0 | if (xmlInputCallbackNr <= 0) |
509 | 0 | return(-1); |
510 | | |
511 | 0 | xmlInputCallbackNr--; |
512 | 0 | xmlInputCallbackTable[xmlInputCallbackNr].matchcallback = NULL; |
513 | 0 | xmlInputCallbackTable[xmlInputCallbackNr].opencallback = NULL; |
514 | 0 | xmlInputCallbackTable[xmlInputCallbackNr].readcallback = NULL; |
515 | 0 | xmlInputCallbackTable[xmlInputCallbackNr].closecallback = NULL; |
516 | |
|
517 | 0 | return(xmlInputCallbackNr); |
518 | 0 | } |
519 | | |
520 | | #ifdef LIBXML_OUTPUT_ENABLED |
521 | | /** |
522 | | * xmlCleanupOutputCallbacks: |
523 | | * |
524 | | * clears the entire output callback table. this includes the |
525 | | * compiled-in I/O callbacks. |
526 | | */ |
527 | | void |
528 | | xmlCleanupOutputCallbacks(void) |
529 | 0 | { |
530 | 0 | int i; |
531 | |
|
532 | 0 | if (!xmlOutputCallbackInitialized) |
533 | 0 | return; |
534 | | |
535 | 0 | for (i = xmlOutputCallbackNr - 1; i >= 0; i--) { |
536 | 0 | xmlOutputCallbackTable[i].matchcallback = NULL; |
537 | 0 | xmlOutputCallbackTable[i].opencallback = NULL; |
538 | 0 | xmlOutputCallbackTable[i].writecallback = NULL; |
539 | 0 | xmlOutputCallbackTable[i].closecallback = NULL; |
540 | 0 | } |
541 | |
|
542 | 0 | xmlOutputCallbackNr = 0; |
543 | 0 | xmlOutputCallbackInitialized = 0; |
544 | 0 | } |
545 | | |
546 | | /** |
547 | | * xmlPopOutputCallbacks: |
548 | | * |
549 | | * Remove the top output callbacks from the output stack. This includes the |
550 | | * compiled-in I/O. |
551 | | * |
552 | | * Returns the number of output callback registered or -1 in case of error. |
553 | | */ |
554 | | int |
555 | | xmlPopOutputCallbacks(void) |
556 | 0 | { |
557 | 0 | if (!xmlOutputCallbackInitialized) |
558 | 0 | return(-1); |
559 | | |
560 | 0 | if (xmlOutputCallbackNr <= 0) |
561 | 0 | return(-1); |
562 | | |
563 | 0 | xmlOutputCallbackNr--; |
564 | 0 | xmlOutputCallbackTable[xmlOutputCallbackNr].matchcallback = NULL; |
565 | 0 | xmlOutputCallbackTable[xmlOutputCallbackNr].opencallback = NULL; |
566 | 0 | xmlOutputCallbackTable[xmlOutputCallbackNr].writecallback = NULL; |
567 | 0 | xmlOutputCallbackTable[xmlOutputCallbackNr].closecallback = NULL; |
568 | |
|
569 | 0 | return(xmlOutputCallbackNr); |
570 | 0 | } |
571 | | |
572 | | #endif /* LIBXML_OUTPUT_ENABLED */ |
573 | | |
574 | | /************************************************************************ |
575 | | * * |
576 | | * Standard I/O for file accesses * |
577 | | * * |
578 | | ************************************************************************/ |
579 | | |
580 | | #if defined(_WIN32) |
581 | | |
582 | | /** |
583 | | * xmlWrapOpenUtf8: |
584 | | * @path: the path in utf-8 encoding |
585 | | * @mode: type of access (0 - read, 1 - write) |
586 | | * |
587 | | * function opens the file specified by @path |
588 | | * |
589 | | */ |
590 | | static FILE* |
591 | | xmlWrapOpenUtf8(const char *path,int mode) |
592 | | { |
593 | | FILE *fd = NULL; |
594 | | wchar_t *wPath; |
595 | | |
596 | | wPath = __xmlIOWin32UTF8ToWChar(path); |
597 | | if(wPath) |
598 | | { |
599 | | fd = _wfopen(wPath, mode ? L"wb" : L"rb"); |
600 | | xmlFree(wPath); |
601 | | } |
602 | | /* maybe path in native encoding */ |
603 | | if(fd == NULL) |
604 | | fd = fopen(path, mode ? "wb" : "rb"); |
605 | | |
606 | | return fd; |
607 | | } |
608 | | |
609 | | #ifdef LIBXML_ZLIB_ENABLED |
610 | | static gzFile |
611 | | xmlWrapGzOpenUtf8(const char *path, const char *mode) |
612 | | { |
613 | | gzFile fd; |
614 | | wchar_t *wPath; |
615 | | |
616 | | fd = gzopen (path, mode); |
617 | | if (fd) |
618 | | return fd; |
619 | | |
620 | | wPath = __xmlIOWin32UTF8ToWChar(path); |
621 | | if(wPath) |
622 | | { |
623 | | int d, m = (strstr(mode, "r") ? O_RDONLY : O_RDWR); |
624 | | #ifdef _O_BINARY |
625 | | m |= (strstr(mode, "b") ? _O_BINARY : 0); |
626 | | #endif |
627 | | d = _wopen(wPath, m); |
628 | | if (d >= 0) |
629 | | fd = gzdopen(d, mode); |
630 | | xmlFree(wPath); |
631 | | } |
632 | | |
633 | | return fd; |
634 | | } |
635 | | #endif |
636 | | |
637 | | /** |
638 | | * xmlWrapStatUtf8: |
639 | | * @path: the path in utf-8 encoding |
640 | | * @info: structure that stores results |
641 | | * |
642 | | * function obtains information about the file or directory |
643 | | * |
644 | | */ |
645 | | static int |
646 | | xmlWrapStatUtf8(const char *path, struct _stat *info) { |
647 | | int retval = -1; |
648 | | wchar_t *wPath; |
649 | | |
650 | | wPath = __xmlIOWin32UTF8ToWChar(path); |
651 | | if (wPath) { |
652 | | retval = _wstat(wPath, info); |
653 | | xmlFree(wPath); |
654 | | } |
655 | | /* maybe path in native encoding */ |
656 | | if(retval < 0) |
657 | | retval = _stat(path, info); |
658 | | return retval; |
659 | | } |
660 | | |
661 | | #endif |
662 | | |
663 | | /** |
664 | | * xmlCheckFilename: |
665 | | * @path: the path to check |
666 | | * |
667 | | * function checks to see if @path is a valid source |
668 | | * (file, socket...) for XML. |
669 | | * |
670 | | * if stat is not available on the target machine, |
671 | | * returns 1. if stat fails, returns 0 (if calling |
672 | | * stat on the filename fails, it can't be right). |
673 | | * if stat succeeds and the file is a directory, |
674 | | * returns 2. otherwise returns 1. |
675 | | */ |
676 | | |
677 | | int |
678 | | xmlCheckFilename (const char *path) |
679 | 0 | { |
680 | 0 | #ifdef HAVE_STAT |
681 | | #if defined(_WIN32) |
682 | | struct _stat stat_buffer; |
683 | | #else |
684 | 0 | struct stat stat_buffer; |
685 | 0 | #endif |
686 | 0 | #endif |
687 | 0 | if (path == NULL) |
688 | 0 | return(0); |
689 | | |
690 | 0 | #ifdef HAVE_STAT |
691 | | #if defined(_WIN32) |
692 | | /* |
693 | | * On Windows stat and wstat do not work with long pathname, |
694 | | * which start with '\\?\' |
695 | | */ |
696 | | if ((path[0] == '\\') && (path[1] == '\\') && (path[2] == '?') && |
697 | | (path[3] == '\\') ) |
698 | | return 1; |
699 | | |
700 | | if (xmlWrapStatUtf8(path, &stat_buffer) == -1) |
701 | | return 0; |
702 | | #else |
703 | 0 | if (stat(path, &stat_buffer) == -1) |
704 | 0 | return 0; |
705 | 0 | #endif |
706 | 0 | #ifdef S_ISDIR |
707 | 0 | if (S_ISDIR(stat_buffer.st_mode)) |
708 | 0 | return 2; |
709 | 0 | #endif |
710 | 0 | #endif /* HAVE_STAT */ |
711 | 0 | return 1; |
712 | 0 | } |
713 | | |
714 | | /** |
715 | | * xmlFdRead: |
716 | | * @context: the I/O context |
717 | | * @buffer: where to drop data |
718 | | * @len: number of bytes to read |
719 | | * |
720 | | * Read @len bytes to @buffer from the I/O channel. |
721 | | * |
722 | | * Returns the number of bytes written |
723 | | */ |
724 | | static int |
725 | 0 | xmlFdRead (void * context, char * buffer, int len) { |
726 | 0 | int ret; |
727 | |
|
728 | 0 | ret = read((int) (ptrdiff_t) context, &buffer[0], len); |
729 | 0 | if (ret < 0) xmlIOErr(0, "read()"); |
730 | 0 | return(ret); |
731 | 0 | } |
732 | | |
733 | | #ifdef LIBXML_OUTPUT_ENABLED |
734 | | /** |
735 | | * xmlFdWrite: |
736 | | * @context: the I/O context |
737 | | * @buffer: where to get data |
738 | | * @len: number of bytes to write |
739 | | * |
740 | | * Write @len bytes from @buffer to the I/O channel. |
741 | | * |
742 | | * Returns the number of bytes written |
743 | | */ |
744 | | static int |
745 | 0 | xmlFdWrite (void * context, const char * buffer, int len) { |
746 | 0 | int ret = 0; |
747 | |
|
748 | 0 | if (len > 0) { |
749 | 0 | ret = write((int) (ptrdiff_t) context, &buffer[0], len); |
750 | 0 | if (ret < 0) xmlIOErr(0, "write()"); |
751 | 0 | } |
752 | 0 | return(ret); |
753 | 0 | } |
754 | | #endif /* LIBXML_OUTPUT_ENABLED */ |
755 | | |
756 | | /** |
757 | | * xmlFdClose: |
758 | | * @context: the I/O context |
759 | | * |
760 | | * Close an I/O channel |
761 | | * |
762 | | * Returns 0 in case of success and error code otherwise |
763 | | */ |
764 | | static int |
765 | 0 | xmlFdClose (void * context) { |
766 | 0 | int ret; |
767 | 0 | ret = close((int) (ptrdiff_t) context); |
768 | 0 | if (ret < 0) xmlIOErr(0, "close()"); |
769 | 0 | return(ret); |
770 | 0 | } |
771 | | |
772 | | /** |
773 | | * xmlFileMatch: |
774 | | * @filename: the URI for matching |
775 | | * |
776 | | * input from FILE * |
777 | | * |
778 | | * Returns 1 if matches, 0 otherwise |
779 | | */ |
780 | | int |
781 | 0 | xmlFileMatch (const char *filename ATTRIBUTE_UNUSED) { |
782 | 0 | return(1); |
783 | 0 | } |
784 | | |
785 | | /** |
786 | | * xmlFileOpen_real: |
787 | | * @filename: the URI for matching |
788 | | * |
789 | | * input from FILE *, supports compressed input |
790 | | * if @filename is " " then the standard input is used |
791 | | * |
792 | | * Returns an I/O context or NULL in case of error |
793 | | */ |
794 | | static void * |
795 | 0 | xmlFileOpen_real (const char *filename) { |
796 | 0 | const char *path = filename; |
797 | 0 | FILE *fd; |
798 | |
|
799 | 0 | if (filename == NULL) |
800 | 0 | return(NULL); |
801 | | |
802 | 0 | if (!strcmp(filename, "-")) { |
803 | 0 | fd = stdin; |
804 | 0 | return((void *) fd); |
805 | 0 | } |
806 | | |
807 | 0 | if (!xmlStrncasecmp(BAD_CAST filename, BAD_CAST "file://localhost/", 17)) { |
808 | | #if defined (_WIN32) |
809 | | path = &filename[17]; |
810 | | #else |
811 | 0 | path = &filename[16]; |
812 | 0 | #endif |
813 | 0 | } else if (!xmlStrncasecmp(BAD_CAST filename, BAD_CAST "file:///", 8)) { |
814 | | #if defined (_WIN32) |
815 | | path = &filename[8]; |
816 | | #else |
817 | 0 | path = &filename[7]; |
818 | 0 | #endif |
819 | 0 | } else if (!xmlStrncasecmp(BAD_CAST filename, BAD_CAST "file:/", 6)) { |
820 | | /* lots of generators seems to lazy to read RFC 1738 */ |
821 | | #if defined (_WIN32) |
822 | | path = &filename[6]; |
823 | | #else |
824 | 0 | path = &filename[5]; |
825 | 0 | #endif |
826 | 0 | } |
827 | | |
828 | | /* Do not check DDNAME on zOS ! */ |
829 | 0 | #if !defined(__MVS__) |
830 | 0 | if (!xmlCheckFilename(path)) |
831 | 0 | return(NULL); |
832 | 0 | #endif |
833 | | |
834 | | #if defined(_WIN32) |
835 | | fd = xmlWrapOpenUtf8(path, 0); |
836 | | #else |
837 | 0 | fd = fopen(path, "rb"); |
838 | 0 | #endif /* WIN32 */ |
839 | 0 | if (fd == NULL) xmlIOErr(0, path); |
840 | 0 | return((void *) fd); |
841 | 0 | } |
842 | | |
843 | | /** |
844 | | * xmlFileOpen: |
845 | | * @filename: the URI for matching |
846 | | * |
847 | | * Wrapper around xmlFileOpen_real that try it with an unescaped |
848 | | * version of @filename, if this fails fallback to @filename |
849 | | * |
850 | | * Returns a handler or NULL in case or failure |
851 | | */ |
852 | | void * |
853 | 0 | xmlFileOpen (const char *filename) { |
854 | 0 | char *unescaped; |
855 | 0 | void *retval; |
856 | |
|
857 | 0 | retval = xmlFileOpen_real(filename); |
858 | 0 | if (retval == NULL) { |
859 | 0 | unescaped = xmlURIUnescapeString(filename, 0, NULL); |
860 | 0 | if (unescaped != NULL) { |
861 | 0 | retval = xmlFileOpen_real(unescaped); |
862 | 0 | xmlFree(unescaped); |
863 | 0 | } |
864 | 0 | } |
865 | |
|
866 | 0 | return retval; |
867 | 0 | } |
868 | | |
869 | | #ifdef LIBXML_OUTPUT_ENABLED |
870 | | /** |
871 | | * xmlFileOpenW: |
872 | | * @filename: the URI for matching |
873 | | * |
874 | | * output to from FILE *, |
875 | | * if @filename is "-" then the standard output is used |
876 | | * |
877 | | * Returns an I/O context or NULL in case of error |
878 | | */ |
879 | | static void * |
880 | 0 | xmlFileOpenW (const char *filename) { |
881 | 0 | const char *path = NULL; |
882 | 0 | FILE *fd; |
883 | |
|
884 | 0 | if (!strcmp(filename, "-")) { |
885 | 0 | fd = stdout; |
886 | 0 | return((void *) fd); |
887 | 0 | } |
888 | | |
889 | 0 | if (!xmlStrncasecmp(BAD_CAST filename, BAD_CAST "file://localhost/", 17)) |
890 | | #if defined (_WIN32) |
891 | | path = &filename[17]; |
892 | | #else |
893 | 0 | path = &filename[16]; |
894 | 0 | #endif |
895 | 0 | else if (!xmlStrncasecmp(BAD_CAST filename, BAD_CAST "file:///", 8)) { |
896 | | #if defined (_WIN32) |
897 | | path = &filename[8]; |
898 | | #else |
899 | 0 | path = &filename[7]; |
900 | 0 | #endif |
901 | 0 | } else |
902 | 0 | path = filename; |
903 | |
|
904 | 0 | if (path == NULL) |
905 | 0 | return(NULL); |
906 | | |
907 | | #if defined(_WIN32) |
908 | | fd = xmlWrapOpenUtf8(path, 1); |
909 | | #elif(__MVS__) |
910 | | fd = fopen(path, "w"); |
911 | | #else |
912 | 0 | fd = fopen(path, "wb"); |
913 | 0 | #endif /* WIN32 */ |
914 | |
|
915 | 0 | if (fd == NULL) xmlIOErr(0, path); |
916 | 0 | return((void *) fd); |
917 | 0 | } |
918 | | #endif /* LIBXML_OUTPUT_ENABLED */ |
919 | | |
920 | | /** |
921 | | * xmlFileRead: |
922 | | * @context: the I/O context |
923 | | * @buffer: where to drop data |
924 | | * @len: number of bytes to write |
925 | | * |
926 | | * Read @len bytes to @buffer from the I/O channel. |
927 | | * |
928 | | * Returns the number of bytes written or < 0 in case of failure |
929 | | */ |
930 | | int |
931 | 0 | xmlFileRead (void * context, char * buffer, int len) { |
932 | 0 | int ret; |
933 | 0 | if ((context == NULL) || (buffer == NULL)) |
934 | 0 | return(-1); |
935 | 0 | ret = fread(&buffer[0], 1, len, (FILE *) context); |
936 | 0 | if (ret < 0) xmlIOErr(0, "fread()"); |
937 | 0 | return(ret); |
938 | 0 | } |
939 | | |
940 | | #ifdef LIBXML_OUTPUT_ENABLED |
941 | | /** |
942 | | * xmlFileWrite: |
943 | | * @context: the I/O context |
944 | | * @buffer: where to drop data |
945 | | * @len: number of bytes to write |
946 | | * |
947 | | * Write @len bytes from @buffer to the I/O channel. |
948 | | * |
949 | | * Returns the number of bytes written |
950 | | */ |
951 | | static int |
952 | 0 | xmlFileWrite (void * context, const char * buffer, int len) { |
953 | 0 | int items; |
954 | |
|
955 | 0 | if ((context == NULL) || (buffer == NULL)) |
956 | 0 | return(-1); |
957 | 0 | items = fwrite(&buffer[0], len, 1, (FILE *) context); |
958 | 0 | if ((items == 0) && (ferror((FILE *) context))) { |
959 | 0 | xmlIOErr(0, "fwrite()"); |
960 | 0 | return(-1); |
961 | 0 | } |
962 | 0 | return(items * len); |
963 | 0 | } |
964 | | #endif /* LIBXML_OUTPUT_ENABLED */ |
965 | | |
966 | | /** |
967 | | * xmlFileClose: |
968 | | * @context: the I/O context |
969 | | * |
970 | | * Close an I/O channel |
971 | | * |
972 | | * Returns 0 or -1 in case of error |
973 | | */ |
974 | | int |
975 | 0 | xmlFileClose (void * context) { |
976 | 0 | FILE *fil; |
977 | 0 | int ret; |
978 | |
|
979 | 0 | if (context == NULL) |
980 | 0 | return(-1); |
981 | 0 | fil = (FILE *) context; |
982 | 0 | if ((fil == stdout) || (fil == stderr)) { |
983 | 0 | ret = fflush(fil); |
984 | 0 | if (ret < 0) |
985 | 0 | xmlIOErr(0, "fflush()"); |
986 | 0 | return(0); |
987 | 0 | } |
988 | 0 | if (fil == stdin) |
989 | 0 | return(0); |
990 | 0 | ret = ( fclose((FILE *) context) == EOF ) ? -1 : 0; |
991 | 0 | if (ret < 0) |
992 | 0 | xmlIOErr(0, "fclose()"); |
993 | 0 | return(ret); |
994 | 0 | } |
995 | | |
996 | | /** |
997 | | * xmlFileFlush: |
998 | | * @context: the I/O context |
999 | | * |
1000 | | * Flush an I/O channel |
1001 | | */ |
1002 | | static int |
1003 | 0 | xmlFileFlush (void * context) { |
1004 | 0 | int ret; |
1005 | |
|
1006 | 0 | if (context == NULL) |
1007 | 0 | return(-1); |
1008 | 0 | ret = ( fflush((FILE *) context) == EOF ) ? -1 : 0; |
1009 | 0 | if (ret < 0) |
1010 | 0 | xmlIOErr(0, "fflush()"); |
1011 | 0 | return(ret); |
1012 | 0 | } |
1013 | | |
1014 | | #ifdef LIBXML_OUTPUT_ENABLED |
1015 | | /** |
1016 | | * xmlBufferWrite: |
1017 | | * @context: the xmlBuffer |
1018 | | * @buffer: the data to write |
1019 | | * @len: number of bytes to write |
1020 | | * |
1021 | | * Write @len bytes from @buffer to the xml buffer |
1022 | | * |
1023 | | * Returns the number of bytes written |
1024 | | */ |
1025 | | static int |
1026 | 0 | xmlBufferWrite (void * context, const char * buffer, int len) { |
1027 | 0 | int ret; |
1028 | |
|
1029 | 0 | ret = xmlBufferAdd((xmlBufferPtr) context, (const xmlChar *) buffer, len); |
1030 | 0 | if (ret != 0) |
1031 | 0 | return(-1); |
1032 | 0 | return(len); |
1033 | 0 | } |
1034 | | #endif |
1035 | | |
1036 | | #ifdef LIBXML_ZLIB_ENABLED |
1037 | | /************************************************************************ |
1038 | | * * |
1039 | | * I/O for compressed file accesses * |
1040 | | * * |
1041 | | ************************************************************************/ |
1042 | | /** |
1043 | | * xmlGzfileMatch: |
1044 | | * @filename: the URI for matching |
1045 | | * |
1046 | | * input from compressed file test |
1047 | | * |
1048 | | * Returns 1 if matches, 0 otherwise |
1049 | | */ |
1050 | | static int |
1051 | | xmlGzfileMatch (const char *filename ATTRIBUTE_UNUSED) { |
1052 | | return(1); |
1053 | | } |
1054 | | |
1055 | | /** |
1056 | | * xmlGzfileOpen_real: |
1057 | | * @filename: the URI for matching |
1058 | | * |
1059 | | * input from compressed file open |
1060 | | * if @filename is " " then the standard input is used |
1061 | | * |
1062 | | * Returns an I/O context or NULL in case of error |
1063 | | */ |
1064 | | static void * |
1065 | | xmlGzfileOpen_real (const char *filename) { |
1066 | | const char *path = NULL; |
1067 | | gzFile fd; |
1068 | | |
1069 | | if (!strcmp(filename, "-")) { |
1070 | | int duped_fd = dup(fileno(stdin)); |
1071 | | fd = gzdopen(duped_fd, "rb"); |
1072 | | if (fd == Z_NULL && duped_fd >= 0) { |
1073 | | close(duped_fd); /* gzdOpen() does not close on failure */ |
1074 | | } |
1075 | | |
1076 | | return((void *) fd); |
1077 | | } |
1078 | | |
1079 | | if (!xmlStrncasecmp(BAD_CAST filename, BAD_CAST "file://localhost/", 17)) |
1080 | | #if defined (_WIN32) |
1081 | | path = &filename[17]; |
1082 | | #else |
1083 | | path = &filename[16]; |
1084 | | #endif |
1085 | | else if (!xmlStrncasecmp(BAD_CAST filename, BAD_CAST "file:///", 8)) { |
1086 | | #if defined (_WIN32) |
1087 | | path = &filename[8]; |
1088 | | #else |
1089 | | path = &filename[7]; |
1090 | | #endif |
1091 | | } else |
1092 | | path = filename; |
1093 | | |
1094 | | if (path == NULL) |
1095 | | return(NULL); |
1096 | | if (!xmlCheckFilename(path)) |
1097 | | return(NULL); |
1098 | | |
1099 | | #if defined(_WIN32) |
1100 | | fd = xmlWrapGzOpenUtf8(path, "rb"); |
1101 | | #else |
1102 | | fd = gzopen(path, "rb"); |
1103 | | #endif |
1104 | | return((void *) fd); |
1105 | | } |
1106 | | |
1107 | | /** |
1108 | | * xmlGzfileOpen: |
1109 | | * @filename: the URI for matching |
1110 | | * |
1111 | | * Wrapper around xmlGzfileOpen_real if the open fails, it will |
1112 | | * try to unescape @filename |
1113 | | */ |
1114 | | static void * |
1115 | | xmlGzfileOpen (const char *filename) { |
1116 | | char *unescaped; |
1117 | | void *retval; |
1118 | | |
1119 | | retval = xmlGzfileOpen_real(filename); |
1120 | | if (retval == NULL) { |
1121 | | unescaped = xmlURIUnescapeString(filename, 0, NULL); |
1122 | | if (unescaped != NULL) { |
1123 | | retval = xmlGzfileOpen_real(unescaped); |
1124 | | } |
1125 | | xmlFree(unescaped); |
1126 | | } |
1127 | | return retval; |
1128 | | } |
1129 | | |
1130 | | #ifdef LIBXML_OUTPUT_ENABLED |
1131 | | /** |
1132 | | * xmlGzfileOpenW: |
1133 | | * @filename: the URI for matching |
1134 | | * @compression: the compression factor (0 - 9 included) |
1135 | | * |
1136 | | * input from compressed file open |
1137 | | * if @filename is " " then the standard input is used |
1138 | | * |
1139 | | * Returns an I/O context or NULL in case of error |
1140 | | */ |
1141 | | static void * |
1142 | | xmlGzfileOpenW (const char *filename, int compression) { |
1143 | | const char *path = NULL; |
1144 | | char mode[15]; |
1145 | | gzFile fd; |
1146 | | |
1147 | | snprintf(mode, sizeof(mode), "wb%d", compression); |
1148 | | if (!strcmp(filename, "-")) { |
1149 | | int duped_fd = dup(fileno(stdout)); |
1150 | | fd = gzdopen(duped_fd, "rb"); |
1151 | | if (fd == Z_NULL && duped_fd >= 0) { |
1152 | | close(duped_fd); /* gzdOpen() does not close on failure */ |
1153 | | } |
1154 | | |
1155 | | return((void *) fd); |
1156 | | } |
1157 | | |
1158 | | if (!xmlStrncasecmp(BAD_CAST filename, BAD_CAST "file://localhost/", 17)) |
1159 | | #if defined (_WIN32) |
1160 | | path = &filename[17]; |
1161 | | #else |
1162 | | path = &filename[16]; |
1163 | | #endif |
1164 | | else if (!xmlStrncasecmp(BAD_CAST filename, BAD_CAST "file:///", 8)) { |
1165 | | #if defined (_WIN32) |
1166 | | path = &filename[8]; |
1167 | | #else |
1168 | | path = &filename[7]; |
1169 | | #endif |
1170 | | } else |
1171 | | path = filename; |
1172 | | |
1173 | | if (path == NULL) |
1174 | | return(NULL); |
1175 | | |
1176 | | #if defined(_WIN32) |
1177 | | fd = xmlWrapGzOpenUtf8(path, mode); |
1178 | | #else |
1179 | | fd = gzopen(path, mode); |
1180 | | #endif |
1181 | | return((void *) fd); |
1182 | | } |
1183 | | #endif /* LIBXML_OUTPUT_ENABLED */ |
1184 | | |
1185 | | /** |
1186 | | * xmlGzfileRead: |
1187 | | * @context: the I/O context |
1188 | | * @buffer: where to drop data |
1189 | | * @len: number of bytes to write |
1190 | | * |
1191 | | * Read @len bytes to @buffer from the compressed I/O channel. |
1192 | | * |
1193 | | * Returns the number of bytes read. |
1194 | | */ |
1195 | | static int |
1196 | | xmlGzfileRead (void * context, char * buffer, int len) { |
1197 | | int ret; |
1198 | | |
1199 | | ret = gzread((gzFile) context, &buffer[0], len); |
1200 | | if (ret < 0) xmlIOErr(0, "gzread()"); |
1201 | | return(ret); |
1202 | | } |
1203 | | |
1204 | | #ifdef LIBXML_OUTPUT_ENABLED |
1205 | | /** |
1206 | | * xmlGzfileWrite: |
1207 | | * @context: the I/O context |
1208 | | * @buffer: where to drop data |
1209 | | * @len: number of bytes to write |
1210 | | * |
1211 | | * Write @len bytes from @buffer to the compressed I/O channel. |
1212 | | * |
1213 | | * Returns the number of bytes written |
1214 | | */ |
1215 | | static int |
1216 | | xmlGzfileWrite (void * context, const char * buffer, int len) { |
1217 | | int ret; |
1218 | | |
1219 | | ret = gzwrite((gzFile) context, (char *) &buffer[0], len); |
1220 | | if (ret < 0) xmlIOErr(0, "gzwrite()"); |
1221 | | return(ret); |
1222 | | } |
1223 | | #endif /* LIBXML_OUTPUT_ENABLED */ |
1224 | | |
1225 | | /** |
1226 | | * xmlGzfileClose: |
1227 | | * @context: the I/O context |
1228 | | * |
1229 | | * Close a compressed I/O channel |
1230 | | */ |
1231 | | static int |
1232 | | xmlGzfileClose (void * context) { |
1233 | | int ret; |
1234 | | |
1235 | | ret = (gzclose((gzFile) context) == Z_OK ) ? 0 : -1; |
1236 | | if (ret < 0) xmlIOErr(0, "gzclose()"); |
1237 | | return(ret); |
1238 | | } |
1239 | | #endif /* LIBXML_ZLIB_ENABLED */ |
1240 | | |
1241 | | #ifdef LIBXML_LZMA_ENABLED |
1242 | | /************************************************************************ |
1243 | | * * |
1244 | | * I/O for compressed file accesses * |
1245 | | * * |
1246 | | ************************************************************************/ |
1247 | | #include "private/xzlib.h" |
1248 | | /** |
1249 | | * xmlXzfileMatch: |
1250 | | * @filename: the URI for matching |
1251 | | * |
1252 | | * input from compressed file test |
1253 | | * |
1254 | | * Returns 1 if matches, 0 otherwise |
1255 | | */ |
1256 | | static int |
1257 | | xmlXzfileMatch (const char *filename ATTRIBUTE_UNUSED) { |
1258 | | return(1); |
1259 | | } |
1260 | | |
1261 | | /** |
1262 | | * xmlXzFileOpen_real: |
1263 | | * @filename: the URI for matching |
1264 | | * |
1265 | | * input from compressed file open |
1266 | | * if @filename is " " then the standard input is used |
1267 | | * |
1268 | | * Returns an I/O context or NULL in case of error |
1269 | | */ |
1270 | | static void * |
1271 | | xmlXzfileOpen_real (const char *filename) { |
1272 | | const char *path = NULL; |
1273 | | xzFile fd; |
1274 | | |
1275 | | if (!strcmp(filename, "-")) { |
1276 | | fd = __libxml2_xzdopen(dup(fileno(stdin)), "rb"); |
1277 | | return((void *) fd); |
1278 | | } |
1279 | | |
1280 | | if (!xmlStrncasecmp(BAD_CAST filename, BAD_CAST "file://localhost/", 17)) { |
1281 | | path = &filename[16]; |
1282 | | } else if (!xmlStrncasecmp(BAD_CAST filename, BAD_CAST "file:///", 8)) { |
1283 | | path = &filename[7]; |
1284 | | } else if (!xmlStrncasecmp(BAD_CAST filename, BAD_CAST "file:/", 6)) { |
1285 | | /* lots of generators seems to lazy to read RFC 1738 */ |
1286 | | path = &filename[5]; |
1287 | | } else |
1288 | | path = filename; |
1289 | | |
1290 | | if (path == NULL) |
1291 | | return(NULL); |
1292 | | if (!xmlCheckFilename(path)) |
1293 | | return(NULL); |
1294 | | |
1295 | | fd = __libxml2_xzopen(path, "rb"); |
1296 | | return((void *) fd); |
1297 | | } |
1298 | | |
1299 | | /** |
1300 | | * xmlXzfileOpen: |
1301 | | * @filename: the URI for matching |
1302 | | * |
1303 | | * Wrapper around xmlXzfileOpen_real that try it with an unescaped |
1304 | | * version of @filename, if this fails fallback to @filename |
1305 | | * |
1306 | | * Returns a handler or NULL in case or failure |
1307 | | */ |
1308 | | static void * |
1309 | | xmlXzfileOpen (const char *filename) { |
1310 | | char *unescaped; |
1311 | | void *retval; |
1312 | | |
1313 | | retval = xmlXzfileOpen_real(filename); |
1314 | | if (retval == NULL) { |
1315 | | unescaped = xmlURIUnescapeString(filename, 0, NULL); |
1316 | | if (unescaped != NULL) { |
1317 | | retval = xmlXzfileOpen_real(unescaped); |
1318 | | } |
1319 | | xmlFree(unescaped); |
1320 | | } |
1321 | | |
1322 | | return retval; |
1323 | | } |
1324 | | |
1325 | | /** |
1326 | | * xmlXzfileRead: |
1327 | | * @context: the I/O context |
1328 | | * @buffer: where to drop data |
1329 | | * @len: number of bytes to write |
1330 | | * |
1331 | | * Read @len bytes to @buffer from the compressed I/O channel. |
1332 | | * |
1333 | | * Returns the number of bytes written |
1334 | | */ |
1335 | | static int |
1336 | | xmlXzfileRead (void * context, char * buffer, int len) { |
1337 | | int ret; |
1338 | | |
1339 | | ret = __libxml2_xzread((xzFile) context, &buffer[0], len); |
1340 | | if (ret < 0) xmlIOErr(0, "xzread()"); |
1341 | | return(ret); |
1342 | | } |
1343 | | |
1344 | | /** |
1345 | | * xmlXzfileClose: |
1346 | | * @context: the I/O context |
1347 | | * |
1348 | | * Close a compressed I/O channel |
1349 | | */ |
1350 | | static int |
1351 | | xmlXzfileClose (void * context) { |
1352 | | int ret; |
1353 | | |
1354 | | ret = (__libxml2_xzclose((xzFile) context) == LZMA_OK ) ? 0 : -1; |
1355 | | if (ret < 0) xmlIOErr(0, "xzclose()"); |
1356 | | return(ret); |
1357 | | } |
1358 | | #endif /* LIBXML_LZMA_ENABLED */ |
1359 | | |
1360 | | #ifdef LIBXML_HTTP_ENABLED |
1361 | | /************************************************************************ |
1362 | | * * |
1363 | | * I/O for HTTP file accesses * |
1364 | | * * |
1365 | | ************************************************************************/ |
1366 | | |
1367 | | #ifdef LIBXML_OUTPUT_ENABLED |
1368 | | typedef struct xmlIOHTTPWriteCtxt_ |
1369 | | { |
1370 | | int compression; |
1371 | | |
1372 | | char * uri; |
1373 | | |
1374 | | void * doc_buff; |
1375 | | |
1376 | | } xmlIOHTTPWriteCtxt, *xmlIOHTTPWriteCtxtPtr; |
1377 | | |
1378 | | #ifdef LIBXML_ZLIB_ENABLED |
1379 | | |
1380 | | #define DFLT_WBITS ( -15 ) |
1381 | | #define DFLT_MEM_LVL ( 8 ) |
1382 | | #define GZ_MAGIC1 ( 0x1f ) |
1383 | | #define GZ_MAGIC2 ( 0x8b ) |
1384 | | #define LXML_ZLIB_OS_CODE ( 0x03 ) |
1385 | | #define INIT_HTTP_BUFF_SIZE ( 32768 ) |
1386 | | #define DFLT_ZLIB_RATIO ( 5 ) |
1387 | | |
1388 | | /* |
1389 | | ** Data structure and functions to work with sending compressed data |
1390 | | ** via HTTP. |
1391 | | */ |
1392 | | |
1393 | | typedef struct xmlZMemBuff_ |
1394 | | { |
1395 | | unsigned long size; |
1396 | | unsigned long crc; |
1397 | | |
1398 | | unsigned char * zbuff; |
1399 | | z_stream zctrl; |
1400 | | |
1401 | | } xmlZMemBuff, *xmlZMemBuffPtr; |
1402 | | |
1403 | | /** |
1404 | | * append_reverse_ulong |
1405 | | * @buff: Compressed memory buffer |
1406 | | * @data: Unsigned long to append |
1407 | | * |
1408 | | * Append a unsigned long in reverse byte order to the end of the |
1409 | | * memory buffer. |
1410 | | */ |
1411 | | static void |
1412 | | append_reverse_ulong( xmlZMemBuff * buff, unsigned long data ) { |
1413 | | |
1414 | | int idx; |
1415 | | |
1416 | | if ( buff == NULL ) |
1417 | | return; |
1418 | | |
1419 | | /* |
1420 | | ** This is plagiarized from putLong in gzio.c (zlib source) where |
1421 | | ** the number "4" is hardcoded. If zlib is ever patched to |
1422 | | ** support 64 bit file sizes, this code would need to be patched |
1423 | | ** as well. |
1424 | | */ |
1425 | | |
1426 | | for ( idx = 0; idx < 4; idx++ ) { |
1427 | | *buff->zctrl.next_out = ( data & 0xff ); |
1428 | | data >>= 8; |
1429 | | buff->zctrl.next_out++; |
1430 | | } |
1431 | | |
1432 | | return; |
1433 | | } |
1434 | | |
1435 | | /** |
1436 | | * |
1437 | | * xmlFreeZMemBuff |
1438 | | * @buff: The memory buffer context to clear |
1439 | | * |
1440 | | * Release all the resources associated with the compressed memory buffer. |
1441 | | */ |
1442 | | static void |
1443 | | xmlFreeZMemBuff( xmlZMemBuffPtr buff ) { |
1444 | | |
1445 | | if ( buff == NULL ) |
1446 | | return; |
1447 | | |
1448 | | xmlFree( buff->zbuff ); |
1449 | | deflateEnd( &buff->zctrl ); |
1450 | | |
1451 | | xmlFree( buff ); |
1452 | | return; |
1453 | | } |
1454 | | |
1455 | | /** |
1456 | | * xmlCreateZMemBuff |
1457 | | *@compression: Compression value to use |
1458 | | * |
1459 | | * Create a memory buffer to hold the compressed XML document. The |
1460 | | * compressed document in memory will end up being identical to what |
1461 | | * would be created if gzopen/gzwrite/gzclose were being used to |
1462 | | * write the document to disk. The code for the header/trailer data to |
1463 | | * the compression is plagiarized from the zlib source files. |
1464 | | */ |
1465 | | static void * |
1466 | | xmlCreateZMemBuff( int compression ) { |
1467 | | |
1468 | | int z_err; |
1469 | | int hdr_lgth; |
1470 | | xmlZMemBuffPtr buff = NULL; |
1471 | | |
1472 | | if ( ( compression < 1 ) || ( compression > 9 ) ) |
1473 | | return ( NULL ); |
1474 | | |
1475 | | /* Create the control and data areas */ |
1476 | | |
1477 | | buff = xmlMalloc( sizeof( xmlZMemBuff ) ); |
1478 | | if ( buff == NULL ) { |
1479 | | xmlIOErrMemory("creating buffer context"); |
1480 | | return ( NULL ); |
1481 | | } |
1482 | | |
1483 | | (void)memset( buff, 0, sizeof( xmlZMemBuff ) ); |
1484 | | buff->size = INIT_HTTP_BUFF_SIZE; |
1485 | | buff->zbuff = xmlMalloc( buff->size ); |
1486 | | if ( buff->zbuff == NULL ) { |
1487 | | xmlFreeZMemBuff( buff ); |
1488 | | xmlIOErrMemory("creating buffer"); |
1489 | | return ( NULL ); |
1490 | | } |
1491 | | |
1492 | | z_err = deflateInit2( &buff->zctrl, compression, Z_DEFLATED, |
1493 | | DFLT_WBITS, DFLT_MEM_LVL, Z_DEFAULT_STRATEGY ); |
1494 | | if ( z_err != Z_OK ) { |
1495 | | xmlChar msg[500]; |
1496 | | xmlFreeZMemBuff( buff ); |
1497 | | buff = NULL; |
1498 | | xmlStrPrintf(msg, 500, |
1499 | | "xmlCreateZMemBuff: %s %d\n", |
1500 | | "Error initializing compression context. ZLIB error:", |
1501 | | z_err ); |
1502 | | xmlIOErr(XML_IO_WRITE, (const char *) msg); |
1503 | | return ( NULL ); |
1504 | | } |
1505 | | |
1506 | | /* Set the header data. The CRC will be needed for the trailer */ |
1507 | | buff->crc = crc32( 0L, NULL, 0 ); |
1508 | | hdr_lgth = snprintf( (char *)buff->zbuff, buff->size, |
1509 | | "%c%c%c%c%c%c%c%c%c%c", |
1510 | | GZ_MAGIC1, GZ_MAGIC2, Z_DEFLATED, |
1511 | | 0, 0, 0, 0, 0, 0, LXML_ZLIB_OS_CODE ); |
1512 | | buff->zctrl.next_out = buff->zbuff + hdr_lgth; |
1513 | | buff->zctrl.avail_out = buff->size - hdr_lgth; |
1514 | | |
1515 | | return ( buff ); |
1516 | | } |
1517 | | |
1518 | | /** |
1519 | | * xmlZMemBuffExtend |
1520 | | * @buff: Buffer used to compress and consolidate data. |
1521 | | * @ext_amt: Number of bytes to extend the buffer. |
1522 | | * |
1523 | | * Extend the internal buffer used to store the compressed data by the |
1524 | | * specified amount. |
1525 | | * |
1526 | | * Returns 0 on success or -1 on failure to extend the buffer. On failure |
1527 | | * the original buffer still exists at the original size. |
1528 | | */ |
1529 | | static int |
1530 | | xmlZMemBuffExtend( xmlZMemBuffPtr buff, size_t ext_amt ) { |
1531 | | |
1532 | | int rc = -1; |
1533 | | size_t new_size; |
1534 | | size_t cur_used; |
1535 | | |
1536 | | unsigned char * tmp_ptr = NULL; |
1537 | | |
1538 | | if ( buff == NULL ) |
1539 | | return ( -1 ); |
1540 | | |
1541 | | else if ( ext_amt == 0 ) |
1542 | | return ( 0 ); |
1543 | | |
1544 | | cur_used = buff->zctrl.next_out - buff->zbuff; |
1545 | | new_size = buff->size + ext_amt; |
1546 | | |
1547 | | tmp_ptr = xmlRealloc( buff->zbuff, new_size ); |
1548 | | if ( tmp_ptr != NULL ) { |
1549 | | rc = 0; |
1550 | | buff->size = new_size; |
1551 | | buff->zbuff = tmp_ptr; |
1552 | | buff->zctrl.next_out = tmp_ptr + cur_used; |
1553 | | buff->zctrl.avail_out = new_size - cur_used; |
1554 | | } |
1555 | | else { |
1556 | | xmlChar msg[500]; |
1557 | | xmlStrPrintf(msg, 500, |
1558 | | "xmlZMemBuffExtend: %s %lu bytes.\n", |
1559 | | "Allocation failure extending output buffer to", |
1560 | | (unsigned long) new_size ); |
1561 | | xmlIOErr(XML_IO_WRITE, (const char *) msg); |
1562 | | } |
1563 | | |
1564 | | return ( rc ); |
1565 | | } |
1566 | | |
1567 | | /** |
1568 | | * xmlZMemBuffAppend |
1569 | | * @buff: Buffer used to compress and consolidate data |
1570 | | * @src: Uncompressed source content to append to buffer |
1571 | | * @len: Length of source data to append to buffer |
1572 | | * |
1573 | | * Compress and append data to the internal buffer. The data buffer |
1574 | | * will be expanded if needed to store the additional data. |
1575 | | * |
1576 | | * Returns the number of bytes appended to the buffer or -1 on error. |
1577 | | */ |
1578 | | static int |
1579 | | xmlZMemBuffAppend( xmlZMemBuffPtr buff, const char * src, int len ) { |
1580 | | |
1581 | | int z_err; |
1582 | | size_t min_accept; |
1583 | | |
1584 | | if ( ( buff == NULL ) || ( src == NULL ) ) |
1585 | | return ( -1 ); |
1586 | | |
1587 | | buff->zctrl.avail_in = len; |
1588 | | buff->zctrl.next_in = (unsigned char *)src; |
1589 | | while ( buff->zctrl.avail_in > 0 ) { |
1590 | | /* |
1591 | | ** Extend the buffer prior to deflate call if a reasonable amount |
1592 | | ** of output buffer space is not available. |
1593 | | */ |
1594 | | min_accept = buff->zctrl.avail_in / DFLT_ZLIB_RATIO; |
1595 | | if ( buff->zctrl.avail_out <= min_accept ) { |
1596 | | if ( xmlZMemBuffExtend( buff, buff->size ) == -1 ) |
1597 | | return ( -1 ); |
1598 | | } |
1599 | | |
1600 | | z_err = deflate( &buff->zctrl, Z_NO_FLUSH ); |
1601 | | if ( z_err != Z_OK ) { |
1602 | | xmlChar msg[500]; |
1603 | | xmlStrPrintf(msg, 500, |
1604 | | "xmlZMemBuffAppend: %s %d %s - %d", |
1605 | | "Compression error while appending", |
1606 | | len, "bytes to buffer. ZLIB error", z_err ); |
1607 | | xmlIOErr(XML_IO_WRITE, (const char *) msg); |
1608 | | return ( -1 ); |
1609 | | } |
1610 | | } |
1611 | | |
1612 | | buff->crc = crc32( buff->crc, (unsigned char *)src, len ); |
1613 | | |
1614 | | return ( len ); |
1615 | | } |
1616 | | |
1617 | | /** |
1618 | | * xmlZMemBuffGetContent |
1619 | | * @buff: Compressed memory content buffer |
1620 | | * @data_ref: Pointer reference to point to compressed content |
1621 | | * |
1622 | | * Flushes the compression buffers, appends gzip file trailers and |
1623 | | * returns the compressed content and length of the compressed data. |
1624 | | * NOTE: The gzip trailer code here is plagiarized from zlib source. |
1625 | | * |
1626 | | * Returns the length of the compressed data or -1 on error. |
1627 | | */ |
1628 | | static int |
1629 | | xmlZMemBuffGetContent( xmlZMemBuffPtr buff, char ** data_ref ) { |
1630 | | |
1631 | | int zlgth = -1; |
1632 | | int z_err; |
1633 | | |
1634 | | if ( ( buff == NULL ) || ( data_ref == NULL ) ) |
1635 | | return ( -1 ); |
1636 | | |
1637 | | /* Need to loop until compression output buffers are flushed */ |
1638 | | |
1639 | | do |
1640 | | { |
1641 | | z_err = deflate( &buff->zctrl, Z_FINISH ); |
1642 | | if ( z_err == Z_OK ) { |
1643 | | /* In this case Z_OK means more buffer space needed */ |
1644 | | |
1645 | | if ( xmlZMemBuffExtend( buff, buff->size ) == -1 ) |
1646 | | return ( -1 ); |
1647 | | } |
1648 | | } |
1649 | | while ( z_err == Z_OK ); |
1650 | | |
1651 | | /* If the compression state is not Z_STREAM_END, some error occurred */ |
1652 | | |
1653 | | if ( z_err == Z_STREAM_END ) { |
1654 | | |
1655 | | /* Need to append the gzip data trailer */ |
1656 | | |
1657 | | if ( buff->zctrl.avail_out < ( 2 * sizeof( unsigned long ) ) ) { |
1658 | | if ( xmlZMemBuffExtend(buff, (2 * sizeof(unsigned long))) == -1 ) |
1659 | | return ( -1 ); |
1660 | | } |
1661 | | |
1662 | | /* |
1663 | | ** For whatever reason, the CRC and length data are pushed out |
1664 | | ** in reverse byte order. So a memcpy can't be used here. |
1665 | | */ |
1666 | | |
1667 | | append_reverse_ulong( buff, buff->crc ); |
1668 | | append_reverse_ulong( buff, buff->zctrl.total_in ); |
1669 | | |
1670 | | zlgth = buff->zctrl.next_out - buff->zbuff; |
1671 | | *data_ref = (char *)buff->zbuff; |
1672 | | } |
1673 | | |
1674 | | else { |
1675 | | xmlChar msg[500]; |
1676 | | xmlStrPrintf(msg, 500, |
1677 | | "xmlZMemBuffGetContent: %s - %d\n", |
1678 | | "Error flushing zlib buffers. Error code", z_err ); |
1679 | | xmlIOErr(XML_IO_WRITE, (const char *) msg); |
1680 | | } |
1681 | | |
1682 | | return ( zlgth ); |
1683 | | } |
1684 | | #endif /* LIBXML_OUTPUT_ENABLED */ |
1685 | | #endif /* LIBXML_ZLIB_ENABLED */ |
1686 | | |
1687 | | #ifdef LIBXML_OUTPUT_ENABLED |
1688 | | /** |
1689 | | * xmlFreeHTTPWriteCtxt |
1690 | | * @ctxt: Context to cleanup |
1691 | | * |
1692 | | * Free allocated memory and reclaim system resources. |
1693 | | * |
1694 | | * No return value. |
1695 | | */ |
1696 | | static void |
1697 | | xmlFreeHTTPWriteCtxt( xmlIOHTTPWriteCtxtPtr ctxt ) |
1698 | 0 | { |
1699 | 0 | if ( ctxt->uri != NULL ) |
1700 | 0 | xmlFree( ctxt->uri ); |
1701 | |
|
1702 | 0 | if ( ctxt->doc_buff != NULL ) { |
1703 | |
|
1704 | | #ifdef LIBXML_ZLIB_ENABLED |
1705 | | if ( ctxt->compression > 0 ) { |
1706 | | xmlFreeZMemBuff( ctxt->doc_buff ); |
1707 | | } |
1708 | | else |
1709 | | #endif |
1710 | 0 | { |
1711 | 0 | xmlOutputBufferClose( ctxt->doc_buff ); |
1712 | 0 | } |
1713 | 0 | } |
1714 | |
|
1715 | 0 | xmlFree( ctxt ); |
1716 | 0 | return; |
1717 | 0 | } |
1718 | | #endif /* LIBXML_OUTPUT_ENABLED */ |
1719 | | |
1720 | | |
1721 | | /** |
1722 | | * xmlIOHTTPMatch: |
1723 | | * @filename: the URI for matching |
1724 | | * |
1725 | | * check if the URI matches an HTTP one |
1726 | | * |
1727 | | * Returns 1 if matches, 0 otherwise |
1728 | | */ |
1729 | | int |
1730 | 0 | xmlIOHTTPMatch (const char *filename) { |
1731 | 0 | if (!xmlStrncasecmp(BAD_CAST filename, BAD_CAST "http://", 7)) |
1732 | 0 | return(1); |
1733 | 0 | return(0); |
1734 | 0 | } |
1735 | | |
1736 | | /** |
1737 | | * xmlIOHTTPOpen: |
1738 | | * @filename: the URI for matching |
1739 | | * |
1740 | | * open an HTTP I/O channel |
1741 | | * |
1742 | | * Returns an I/O context or NULL in case of error |
1743 | | */ |
1744 | | void * |
1745 | 0 | xmlIOHTTPOpen (const char *filename) { |
1746 | 0 | return(xmlNanoHTTPOpen(filename, NULL)); |
1747 | 0 | } |
1748 | | |
1749 | | #ifdef LIBXML_OUTPUT_ENABLED |
1750 | | /** |
1751 | | * xmlIOHTTPOpenW: |
1752 | | * @post_uri: The destination URI for the document |
1753 | | * @compression: The compression desired for the document. |
1754 | | * |
1755 | | * Open a temporary buffer to collect the document for a subsequent HTTP POST |
1756 | | * request. Non-static as is called from the output buffer creation routine. |
1757 | | * |
1758 | | * Returns an I/O context or NULL in case of error. |
1759 | | */ |
1760 | | |
1761 | | void * |
1762 | | xmlIOHTTPOpenW(const char *post_uri, int compression ATTRIBUTE_UNUSED) |
1763 | 0 | { |
1764 | |
|
1765 | 0 | xmlIOHTTPWriteCtxtPtr ctxt = NULL; |
1766 | |
|
1767 | 0 | if (post_uri == NULL) |
1768 | 0 | return (NULL); |
1769 | | |
1770 | 0 | ctxt = xmlMalloc(sizeof(xmlIOHTTPWriteCtxt)); |
1771 | 0 | if (ctxt == NULL) { |
1772 | 0 | xmlIOErrMemory("creating HTTP output context"); |
1773 | 0 | return (NULL); |
1774 | 0 | } |
1775 | | |
1776 | 0 | (void) memset(ctxt, 0, sizeof(xmlIOHTTPWriteCtxt)); |
1777 | |
|
1778 | 0 | ctxt->uri = (char *) xmlStrdup((const xmlChar *)post_uri); |
1779 | 0 | if (ctxt->uri == NULL) { |
1780 | 0 | xmlIOErrMemory("copying URI"); |
1781 | 0 | xmlFreeHTTPWriteCtxt(ctxt); |
1782 | 0 | return (NULL); |
1783 | 0 | } |
1784 | | |
1785 | | /* |
1786 | | * ** Since the document length is required for an HTTP post, |
1787 | | * ** need to put the document into a buffer. A memory buffer |
1788 | | * ** is being used to avoid pushing the data to disk and back. |
1789 | | */ |
1790 | | |
1791 | | #ifdef LIBXML_ZLIB_ENABLED |
1792 | | if ((compression > 0) && (compression <= 9)) { |
1793 | | |
1794 | | ctxt->compression = compression; |
1795 | | ctxt->doc_buff = xmlCreateZMemBuff(compression); |
1796 | | } else |
1797 | | #endif |
1798 | 0 | { |
1799 | | /* Any character conversions should have been done before this */ |
1800 | |
|
1801 | 0 | ctxt->doc_buff = xmlAllocOutputBufferInternal(NULL); |
1802 | 0 | } |
1803 | |
|
1804 | 0 | if (ctxt->doc_buff == NULL) { |
1805 | 0 | xmlFreeHTTPWriteCtxt(ctxt); |
1806 | 0 | ctxt = NULL; |
1807 | 0 | } |
1808 | |
|
1809 | 0 | return (ctxt); |
1810 | 0 | } |
1811 | | #endif /* LIBXML_OUTPUT_ENABLED */ |
1812 | | |
1813 | | #ifdef LIBXML_OUTPUT_ENABLED |
1814 | | /** |
1815 | | * xmlIOHTTPDfltOpenW |
1816 | | * @post_uri: The destination URI for this document. |
1817 | | * |
1818 | | * Calls xmlIOHTTPOpenW with no compression to set up for a subsequent |
1819 | | * HTTP post command. This function should generally not be used as |
1820 | | * the open callback is short circuited in xmlOutputBufferCreateFile. |
1821 | | * |
1822 | | * Returns a pointer to the new IO context. |
1823 | | */ |
1824 | | static void * |
1825 | 0 | xmlIOHTTPDfltOpenW( const char * post_uri ) { |
1826 | 0 | return ( xmlIOHTTPOpenW( post_uri, 0 ) ); |
1827 | 0 | } |
1828 | | #endif /* LIBXML_OUTPUT_ENABLED */ |
1829 | | |
1830 | | /** |
1831 | | * xmlIOHTTPRead: |
1832 | | * @context: the I/O context |
1833 | | * @buffer: where to drop data |
1834 | | * @len: number of bytes to write |
1835 | | * |
1836 | | * Read @len bytes to @buffer from the I/O channel. |
1837 | | * |
1838 | | * Returns the number of bytes written |
1839 | | */ |
1840 | | int |
1841 | 0 | xmlIOHTTPRead(void * context, char * buffer, int len) { |
1842 | 0 | if ((buffer == NULL) || (len < 0)) return(-1); |
1843 | 0 | return(xmlNanoHTTPRead(context, &buffer[0], len)); |
1844 | 0 | } |
1845 | | |
1846 | | #ifdef LIBXML_OUTPUT_ENABLED |
1847 | | /** |
1848 | | * xmlIOHTTPWrite |
1849 | | * @context: previously opened writing context |
1850 | | * @buffer: data to output to temporary buffer |
1851 | | * @len: bytes to output |
1852 | | * |
1853 | | * Collect data from memory buffer into a temporary file for later |
1854 | | * processing. |
1855 | | * |
1856 | | * Returns number of bytes written. |
1857 | | */ |
1858 | | |
1859 | | static int |
1860 | 0 | xmlIOHTTPWrite( void * context, const char * buffer, int len ) { |
1861 | |
|
1862 | 0 | xmlIOHTTPWriteCtxtPtr ctxt = context; |
1863 | |
|
1864 | 0 | if ( ( ctxt == NULL ) || ( ctxt->doc_buff == NULL ) || ( buffer == NULL ) ) |
1865 | 0 | return ( -1 ); |
1866 | | |
1867 | 0 | if ( len > 0 ) { |
1868 | | |
1869 | | /* Use gzwrite or fwrite as previously setup in the open call */ |
1870 | |
|
1871 | | #ifdef LIBXML_ZLIB_ENABLED |
1872 | | if ( ctxt->compression > 0 ) |
1873 | | len = xmlZMemBuffAppend( ctxt->doc_buff, buffer, len ); |
1874 | | |
1875 | | else |
1876 | | #endif |
1877 | 0 | len = xmlOutputBufferWrite( ctxt->doc_buff, len, buffer ); |
1878 | |
|
1879 | 0 | if ( len < 0 ) { |
1880 | 0 | xmlChar msg[500]; |
1881 | 0 | xmlStrPrintf(msg, 500, |
1882 | 0 | "xmlIOHTTPWrite: %s\n%s '%s'.\n", |
1883 | 0 | "Error appending to internal buffer.", |
1884 | 0 | "Error sending document to URI", |
1885 | 0 | ctxt->uri ); |
1886 | 0 | xmlIOErr(XML_IO_WRITE, (const char *) msg); |
1887 | 0 | } |
1888 | 0 | } |
1889 | |
|
1890 | 0 | return ( len ); |
1891 | 0 | } |
1892 | | #endif /* LIBXML_OUTPUT_ENABLED */ |
1893 | | |
1894 | | |
1895 | | /** |
1896 | | * xmlIOHTTPClose: |
1897 | | * @context: the I/O context |
1898 | | * |
1899 | | * Close an HTTP I/O channel |
1900 | | * |
1901 | | * Returns 0 |
1902 | | */ |
1903 | | int |
1904 | 0 | xmlIOHTTPClose (void * context) { |
1905 | 0 | xmlNanoHTTPClose(context); |
1906 | 0 | return 0; |
1907 | 0 | } |
1908 | | |
1909 | | #ifdef LIBXML_OUTPUT_ENABLED |
1910 | | /** |
1911 | | * xmlIOHTTCloseWrite |
1912 | | * @context: The I/O context |
1913 | | * @http_mthd: The HTTP method to be used when sending the data |
1914 | | * |
1915 | | * Close the transmit HTTP I/O channel and actually send the data. |
1916 | | */ |
1917 | | static int |
1918 | 0 | xmlIOHTTPCloseWrite( void * context, const char * http_mthd ) { |
1919 | |
|
1920 | 0 | int close_rc = -1; |
1921 | 0 | int http_rtn = 0; |
1922 | 0 | int content_lgth = 0; |
1923 | 0 | xmlIOHTTPWriteCtxtPtr ctxt = context; |
1924 | |
|
1925 | 0 | char * http_content = NULL; |
1926 | 0 | char * content_encoding = NULL; |
1927 | 0 | char * content_type = (char *) "text/xml"; |
1928 | 0 | void * http_ctxt = NULL; |
1929 | |
|
1930 | 0 | if ( ( ctxt == NULL ) || ( http_mthd == NULL ) ) |
1931 | 0 | return ( -1 ); |
1932 | | |
1933 | | /* Retrieve the content from the appropriate buffer */ |
1934 | | |
1935 | | #ifdef LIBXML_ZLIB_ENABLED |
1936 | | |
1937 | | if ( ctxt->compression > 0 ) { |
1938 | | content_lgth = xmlZMemBuffGetContent( ctxt->doc_buff, &http_content ); |
1939 | | content_encoding = (char *) "Content-Encoding: gzip"; |
1940 | | } |
1941 | | else |
1942 | | #endif |
1943 | 0 | { |
1944 | | /* Pull the data out of the memory output buffer */ |
1945 | |
|
1946 | 0 | xmlOutputBufferPtr dctxt = ctxt->doc_buff; |
1947 | 0 | http_content = (char *) xmlBufContent(dctxt->buffer); |
1948 | 0 | content_lgth = xmlBufUse(dctxt->buffer); |
1949 | 0 | } |
1950 | |
|
1951 | 0 | if ( http_content == NULL ) { |
1952 | 0 | xmlChar msg[500]; |
1953 | 0 | xmlStrPrintf(msg, 500, |
1954 | 0 | "xmlIOHTTPCloseWrite: %s '%s' %s '%s'.\n", |
1955 | 0 | "Error retrieving content.\nUnable to", |
1956 | 0 | http_mthd, "data to URI", ctxt->uri ); |
1957 | 0 | xmlIOErr(XML_IO_WRITE, (const char *) msg); |
1958 | 0 | } |
1959 | | |
1960 | 0 | else { |
1961 | |
|
1962 | 0 | http_ctxt = xmlNanoHTTPMethod( ctxt->uri, http_mthd, http_content, |
1963 | 0 | &content_type, content_encoding, |
1964 | 0 | content_lgth ); |
1965 | |
|
1966 | 0 | if ( http_ctxt != NULL ) { |
1967 | |
|
1968 | 0 | http_rtn = xmlNanoHTTPReturnCode( http_ctxt ); |
1969 | 0 | if ( ( http_rtn >= 200 ) && ( http_rtn < 300 ) ) |
1970 | 0 | close_rc = 0; |
1971 | 0 | else { |
1972 | 0 | xmlChar msg[500]; |
1973 | 0 | xmlStrPrintf(msg, 500, |
1974 | 0 | "xmlIOHTTPCloseWrite: HTTP '%s' of %d %s\n'%s' %s %d\n", |
1975 | 0 | http_mthd, content_lgth, |
1976 | 0 | "bytes to URI", ctxt->uri, |
1977 | 0 | "failed. HTTP return code:", http_rtn ); |
1978 | 0 | xmlIOErr(XML_IO_WRITE, (const char *) msg); |
1979 | 0 | } |
1980 | |
|
1981 | 0 | xmlNanoHTTPClose( http_ctxt ); |
1982 | 0 | xmlFree( content_type ); |
1983 | 0 | } |
1984 | 0 | } |
1985 | | |
1986 | | /* Final cleanups */ |
1987 | |
|
1988 | 0 | xmlFreeHTTPWriteCtxt( ctxt ); |
1989 | |
|
1990 | 0 | return ( close_rc ); |
1991 | 0 | } |
1992 | | |
1993 | | /** |
1994 | | * xmlIOHTTPClosePut |
1995 | | * |
1996 | | * @context: The I/O context |
1997 | | * |
1998 | | * Close the transmit HTTP I/O channel and actually send data using a PUT |
1999 | | * HTTP method. |
2000 | | */ |
2001 | | static int |
2002 | 0 | xmlIOHTTPClosePut( void * ctxt ) { |
2003 | 0 | return ( xmlIOHTTPCloseWrite( ctxt, "PUT" ) ); |
2004 | 0 | } |
2005 | | |
2006 | | |
2007 | | /** |
2008 | | * xmlIOHTTPClosePost |
2009 | | * |
2010 | | * @context: The I/O context |
2011 | | * |
2012 | | * Close the transmit HTTP I/O channel and actually send data using a POST |
2013 | | * HTTP method. |
2014 | | */ |
2015 | | static int |
2016 | 0 | xmlIOHTTPClosePost( void * ctxt ) { |
2017 | 0 | return ( xmlIOHTTPCloseWrite( ctxt, "POST" ) ); |
2018 | 0 | } |
2019 | | #endif /* LIBXML_OUTPUT_ENABLED */ |
2020 | | |
2021 | | #endif /* LIBXML_HTTP_ENABLED */ |
2022 | | |
2023 | | #ifdef LIBXML_FTP_ENABLED |
2024 | | /************************************************************************ |
2025 | | * * |
2026 | | * I/O for FTP file accesses * |
2027 | | * * |
2028 | | ************************************************************************/ |
2029 | | /** |
2030 | | * xmlIOFTPMatch: |
2031 | | * @filename: the URI for matching |
2032 | | * |
2033 | | * check if the URI matches an FTP one |
2034 | | * |
2035 | | * Returns 1 if matches, 0 otherwise |
2036 | | */ |
2037 | | int |
2038 | | xmlIOFTPMatch (const char *filename) { |
2039 | | if (!xmlStrncasecmp(BAD_CAST filename, BAD_CAST "ftp://", 6)) |
2040 | | return(1); |
2041 | | return(0); |
2042 | | } |
2043 | | |
2044 | | /** |
2045 | | * xmlIOFTPOpen: |
2046 | | * @filename: the URI for matching |
2047 | | * |
2048 | | * open an FTP I/O channel |
2049 | | * |
2050 | | * Returns an I/O context or NULL in case of error |
2051 | | */ |
2052 | | void * |
2053 | | xmlIOFTPOpen (const char *filename) { |
2054 | | return(xmlNanoFTPOpen(filename)); |
2055 | | } |
2056 | | |
2057 | | /** |
2058 | | * xmlIOFTPRead: |
2059 | | * @context: the I/O context |
2060 | | * @buffer: where to drop data |
2061 | | * @len: number of bytes to write |
2062 | | * |
2063 | | * Read @len bytes to @buffer from the I/O channel. |
2064 | | * |
2065 | | * Returns the number of bytes written |
2066 | | */ |
2067 | | int |
2068 | | xmlIOFTPRead(void * context, char * buffer, int len) { |
2069 | | if ((buffer == NULL) || (len < 0)) return(-1); |
2070 | | return(xmlNanoFTPRead(context, &buffer[0], len)); |
2071 | | } |
2072 | | |
2073 | | /** |
2074 | | * xmlIOFTPClose: |
2075 | | * @context: the I/O context |
2076 | | * |
2077 | | * Close an FTP I/O channel |
2078 | | * |
2079 | | * Returns 0 |
2080 | | */ |
2081 | | int |
2082 | | xmlIOFTPClose (void * context) { |
2083 | | return ( xmlNanoFTPClose(context) ); |
2084 | | } |
2085 | | #endif /* LIBXML_FTP_ENABLED */ |
2086 | | |
2087 | | |
2088 | | /** |
2089 | | * xmlRegisterInputCallbacks: |
2090 | | * @matchFunc: the xmlInputMatchCallback |
2091 | | * @openFunc: the xmlInputOpenCallback |
2092 | | * @readFunc: the xmlInputReadCallback |
2093 | | * @closeFunc: the xmlInputCloseCallback |
2094 | | * |
2095 | | * Register a new set of I/O callback for handling parser input. |
2096 | | * |
2097 | | * Returns the registered handler number or -1 in case of error |
2098 | | */ |
2099 | | int |
2100 | | xmlRegisterInputCallbacks(xmlInputMatchCallback matchFunc, |
2101 | | xmlInputOpenCallback openFunc, xmlInputReadCallback readFunc, |
2102 | 2 | xmlInputCloseCallback closeFunc) { |
2103 | 2 | if (xmlInputCallbackNr >= MAX_INPUT_CALLBACK) { |
2104 | 0 | return(-1); |
2105 | 0 | } |
2106 | 2 | xmlInputCallbackTable[xmlInputCallbackNr].matchcallback = matchFunc; |
2107 | 2 | xmlInputCallbackTable[xmlInputCallbackNr].opencallback = openFunc; |
2108 | 2 | xmlInputCallbackTable[xmlInputCallbackNr].readcallback = readFunc; |
2109 | 2 | xmlInputCallbackTable[xmlInputCallbackNr].closecallback = closeFunc; |
2110 | 2 | xmlInputCallbackInitialized = 1; |
2111 | 2 | return(xmlInputCallbackNr++); |
2112 | 2 | } |
2113 | | |
2114 | | #ifdef LIBXML_OUTPUT_ENABLED |
2115 | | /** |
2116 | | * xmlRegisterOutputCallbacks: |
2117 | | * @matchFunc: the xmlOutputMatchCallback |
2118 | | * @openFunc: the xmlOutputOpenCallback |
2119 | | * @writeFunc: the xmlOutputWriteCallback |
2120 | | * @closeFunc: the xmlOutputCloseCallback |
2121 | | * |
2122 | | * Register a new set of I/O callback for handling output. |
2123 | | * |
2124 | | * Returns the registered handler number or -1 in case of error |
2125 | | */ |
2126 | | int |
2127 | | xmlRegisterOutputCallbacks(xmlOutputMatchCallback matchFunc, |
2128 | | xmlOutputOpenCallback openFunc, xmlOutputWriteCallback writeFunc, |
2129 | 2 | xmlOutputCloseCallback closeFunc) { |
2130 | 2 | if (xmlOutputCallbackNr >= MAX_OUTPUT_CALLBACK) { |
2131 | 0 | return(-1); |
2132 | 0 | } |
2133 | 2 | xmlOutputCallbackTable[xmlOutputCallbackNr].matchcallback = matchFunc; |
2134 | 2 | xmlOutputCallbackTable[xmlOutputCallbackNr].opencallback = openFunc; |
2135 | 2 | xmlOutputCallbackTable[xmlOutputCallbackNr].writecallback = writeFunc; |
2136 | 2 | xmlOutputCallbackTable[xmlOutputCallbackNr].closecallback = closeFunc; |
2137 | 2 | xmlOutputCallbackInitialized = 1; |
2138 | 2 | return(xmlOutputCallbackNr++); |
2139 | 2 | } |
2140 | | #endif /* LIBXML_OUTPUT_ENABLED */ |
2141 | | |
2142 | | /** |
2143 | | * xmlRegisterDefaultInputCallbacks: |
2144 | | * |
2145 | | * Registers the default compiled-in I/O handlers. |
2146 | | */ |
2147 | | void |
2148 | 1 | xmlRegisterDefaultInputCallbacks(void) { |
2149 | 1 | if (xmlInputCallbackInitialized) |
2150 | 0 | return; |
2151 | | |
2152 | 1 | xmlRegisterInputCallbacks(xmlFileMatch, xmlFileOpen, |
2153 | 1 | xmlFileRead, xmlFileClose); |
2154 | | #ifdef LIBXML_ZLIB_ENABLED |
2155 | | xmlRegisterInputCallbacks(xmlGzfileMatch, xmlGzfileOpen, |
2156 | | xmlGzfileRead, xmlGzfileClose); |
2157 | | #endif /* LIBXML_ZLIB_ENABLED */ |
2158 | | #ifdef LIBXML_LZMA_ENABLED |
2159 | | xmlRegisterInputCallbacks(xmlXzfileMatch, xmlXzfileOpen, |
2160 | | xmlXzfileRead, xmlXzfileClose); |
2161 | | #endif /* LIBXML_LZMA_ENABLED */ |
2162 | | |
2163 | 1 | #ifdef LIBXML_HTTP_ENABLED |
2164 | 1 | xmlRegisterInputCallbacks(xmlIOHTTPMatch, xmlIOHTTPOpen, |
2165 | 1 | xmlIOHTTPRead, xmlIOHTTPClose); |
2166 | 1 | #endif /* LIBXML_HTTP_ENABLED */ |
2167 | | |
2168 | | #ifdef LIBXML_FTP_ENABLED |
2169 | | xmlRegisterInputCallbacks(xmlIOFTPMatch, xmlIOFTPOpen, |
2170 | | xmlIOFTPRead, xmlIOFTPClose); |
2171 | | #endif /* LIBXML_FTP_ENABLED */ |
2172 | 1 | xmlInputCallbackInitialized = 1; |
2173 | 1 | } |
2174 | | |
2175 | | #ifdef LIBXML_OUTPUT_ENABLED |
2176 | | /** |
2177 | | * xmlRegisterDefaultOutputCallbacks: |
2178 | | * |
2179 | | * Registers the default compiled-in I/O handlers. |
2180 | | */ |
2181 | | void |
2182 | 1 | xmlRegisterDefaultOutputCallbacks (void) { |
2183 | 1 | if (xmlOutputCallbackInitialized) |
2184 | 0 | return; |
2185 | | |
2186 | 1 | xmlRegisterOutputCallbacks(xmlFileMatch, xmlFileOpenW, |
2187 | 1 | xmlFileWrite, xmlFileClose); |
2188 | | |
2189 | 1 | #ifdef LIBXML_HTTP_ENABLED |
2190 | 1 | xmlRegisterOutputCallbacks(xmlIOHTTPMatch, xmlIOHTTPDfltOpenW, |
2191 | 1 | xmlIOHTTPWrite, xmlIOHTTPClosePut); |
2192 | 1 | #endif |
2193 | | |
2194 | | /********************************* |
2195 | | No way a-priori to distinguish between gzipped files from |
2196 | | uncompressed ones except opening if existing then closing |
2197 | | and saving with same compression ratio ... a pain. |
2198 | | |
2199 | | #ifdef LIBXML_ZLIB_ENABLED |
2200 | | xmlRegisterOutputCallbacks(xmlGzfileMatch, xmlGzfileOpen, |
2201 | | xmlGzfileWrite, xmlGzfileClose); |
2202 | | #endif |
2203 | | |
2204 | | Nor FTP PUT .... |
2205 | | #ifdef LIBXML_FTP_ENABLED |
2206 | | xmlRegisterOutputCallbacks(xmlIOFTPMatch, xmlIOFTPOpen, |
2207 | | xmlIOFTPWrite, xmlIOFTPClose); |
2208 | | #endif |
2209 | | **********************************/ |
2210 | 1 | xmlOutputCallbackInitialized = 1; |
2211 | 1 | } |
2212 | | |
2213 | | #ifdef LIBXML_HTTP_ENABLED |
2214 | | /** |
2215 | | * xmlRegisterHTTPPostCallbacks: |
2216 | | * |
2217 | | * By default, libxml submits HTTP output requests using the "PUT" method. |
2218 | | * Calling this method changes the HTTP output method to use the "POST" |
2219 | | * method instead. |
2220 | | * |
2221 | | */ |
2222 | | void |
2223 | 0 | xmlRegisterHTTPPostCallbacks( void ) { |
2224 | | |
2225 | | /* Register defaults if not done previously */ |
2226 | |
|
2227 | 0 | if ( xmlOutputCallbackInitialized == 0 ) |
2228 | 0 | xmlRegisterDefaultOutputCallbacks( ); |
2229 | |
|
2230 | 0 | xmlRegisterOutputCallbacks(xmlIOHTTPMatch, xmlIOHTTPDfltOpenW, |
2231 | 0 | xmlIOHTTPWrite, xmlIOHTTPClosePost); |
2232 | 0 | return; |
2233 | 0 | } |
2234 | | #endif |
2235 | | #endif /* LIBXML_OUTPUT_ENABLED */ |
2236 | | |
2237 | | /** |
2238 | | * xmlAllocParserInputBuffer: |
2239 | | * @enc: the charset encoding if known |
2240 | | * |
2241 | | * Create a buffered parser input for progressive parsing |
2242 | | * |
2243 | | * Returns the new parser input or NULL |
2244 | | */ |
2245 | | xmlParserInputBufferPtr |
2246 | 16.2k | xmlAllocParserInputBuffer(xmlCharEncoding enc) { |
2247 | 16.2k | xmlParserInputBufferPtr ret; |
2248 | | |
2249 | 16.2k | ret = (xmlParserInputBufferPtr) xmlMalloc(sizeof(xmlParserInputBuffer)); |
2250 | 16.2k | if (ret == NULL) { |
2251 | 0 | return(NULL); |
2252 | 0 | } |
2253 | 16.2k | memset(ret, 0, sizeof(xmlParserInputBuffer)); |
2254 | 16.2k | ret->buffer = xmlBufCreateSize(2 * xmlDefaultBufferSize); |
2255 | 16.2k | if (ret->buffer == NULL) { |
2256 | 0 | xmlFree(ret); |
2257 | 0 | return(NULL); |
2258 | 0 | } |
2259 | 16.2k | xmlBufSetAllocationScheme(ret->buffer, XML_BUFFER_ALLOC_DOUBLEIT); |
2260 | 16.2k | ret->encoder = xmlGetCharEncodingHandler(enc); |
2261 | 16.2k | if (ret->encoder != NULL) |
2262 | 0 | ret->raw = xmlBufCreateSize(2 * xmlDefaultBufferSize); |
2263 | 16.2k | else |
2264 | 16.2k | ret->raw = NULL; |
2265 | 16.2k | ret->readcallback = NULL; |
2266 | 16.2k | ret->closecallback = NULL; |
2267 | 16.2k | ret->context = NULL; |
2268 | 16.2k | ret->compressed = -1; |
2269 | 16.2k | ret->rawconsumed = 0; |
2270 | | |
2271 | 16.2k | return(ret); |
2272 | 16.2k | } |
2273 | | |
2274 | | #ifdef LIBXML_OUTPUT_ENABLED |
2275 | | /** |
2276 | | * xmlAllocOutputBuffer: |
2277 | | * @encoder: the encoding converter or NULL |
2278 | | * |
2279 | | * Create a buffered parser output |
2280 | | * |
2281 | | * Returns the new parser output or NULL |
2282 | | */ |
2283 | | xmlOutputBufferPtr |
2284 | 0 | xmlAllocOutputBuffer(xmlCharEncodingHandlerPtr encoder) { |
2285 | 0 | xmlOutputBufferPtr ret; |
2286 | |
|
2287 | 0 | ret = (xmlOutputBufferPtr) xmlMalloc(sizeof(xmlOutputBuffer)); |
2288 | 0 | if (ret == NULL) { |
2289 | 0 | return(NULL); |
2290 | 0 | } |
2291 | 0 | memset(ret, 0, sizeof(xmlOutputBuffer)); |
2292 | 0 | ret->buffer = xmlBufCreate(); |
2293 | 0 | if (ret->buffer == NULL) { |
2294 | 0 | xmlFree(ret); |
2295 | 0 | return(NULL); |
2296 | 0 | } |
2297 | 0 | xmlBufSetAllocationScheme(ret->buffer, XML_BUFFER_ALLOC_DOUBLEIT); |
2298 | |
|
2299 | 0 | ret->encoder = encoder; |
2300 | 0 | if (encoder != NULL) { |
2301 | 0 | ret->conv = xmlBufCreateSize(4000); |
2302 | 0 | if (ret->conv == NULL) { |
2303 | 0 | xmlBufFree(ret->buffer); |
2304 | 0 | xmlFree(ret); |
2305 | 0 | return(NULL); |
2306 | 0 | } |
2307 | | |
2308 | | /* |
2309 | | * This call is designed to initiate the encoder state |
2310 | | */ |
2311 | 0 | xmlCharEncOutput(ret, 1); |
2312 | 0 | } else |
2313 | 0 | ret->conv = NULL; |
2314 | 0 | ret->writecallback = NULL; |
2315 | 0 | ret->closecallback = NULL; |
2316 | 0 | ret->context = NULL; |
2317 | 0 | ret->written = 0; |
2318 | |
|
2319 | 0 | return(ret); |
2320 | 0 | } |
2321 | | |
2322 | | /** |
2323 | | * xmlAllocOutputBufferInternal: |
2324 | | * @encoder: the encoding converter or NULL |
2325 | | * |
2326 | | * Create a buffered parser output |
2327 | | * |
2328 | | * Returns the new parser output or NULL |
2329 | | */ |
2330 | | xmlOutputBufferPtr |
2331 | 0 | xmlAllocOutputBufferInternal(xmlCharEncodingHandlerPtr encoder) { |
2332 | 0 | xmlOutputBufferPtr ret; |
2333 | |
|
2334 | 0 | ret = (xmlOutputBufferPtr) xmlMalloc(sizeof(xmlOutputBuffer)); |
2335 | 0 | if (ret == NULL) { |
2336 | 0 | return(NULL); |
2337 | 0 | } |
2338 | 0 | memset(ret, 0, sizeof(xmlOutputBuffer)); |
2339 | 0 | ret->buffer = xmlBufCreate(); |
2340 | 0 | if (ret->buffer == NULL) { |
2341 | 0 | xmlFree(ret); |
2342 | 0 | return(NULL); |
2343 | 0 | } |
2344 | | |
2345 | | |
2346 | | /* |
2347 | | * For conversion buffers we use the special IO handling |
2348 | | */ |
2349 | 0 | xmlBufSetAllocationScheme(ret->buffer, XML_BUFFER_ALLOC_IO); |
2350 | |
|
2351 | 0 | ret->encoder = encoder; |
2352 | 0 | if (encoder != NULL) { |
2353 | 0 | ret->conv = xmlBufCreateSize(4000); |
2354 | 0 | if (ret->conv == NULL) { |
2355 | 0 | xmlBufFree(ret->buffer); |
2356 | 0 | xmlFree(ret); |
2357 | 0 | return(NULL); |
2358 | 0 | } |
2359 | | |
2360 | | /* |
2361 | | * This call is designed to initiate the encoder state |
2362 | | */ |
2363 | 0 | xmlCharEncOutput(ret, 1); |
2364 | 0 | } else |
2365 | 0 | ret->conv = NULL; |
2366 | 0 | ret->writecallback = NULL; |
2367 | 0 | ret->closecallback = NULL; |
2368 | 0 | ret->context = NULL; |
2369 | 0 | ret->written = 0; |
2370 | |
|
2371 | 0 | return(ret); |
2372 | 0 | } |
2373 | | |
2374 | | #endif /* LIBXML_OUTPUT_ENABLED */ |
2375 | | |
2376 | | /** |
2377 | | * xmlFreeParserInputBuffer: |
2378 | | * @in: a buffered parser input |
2379 | | * |
2380 | | * Free up the memory used by a buffered parser input |
2381 | | */ |
2382 | | void |
2383 | 16.2k | xmlFreeParserInputBuffer(xmlParserInputBufferPtr in) { |
2384 | 16.2k | if (in == NULL) return; |
2385 | | |
2386 | 16.2k | if (in->raw) { |
2387 | 2.57k | xmlBufFree(in->raw); |
2388 | 2.57k | in->raw = NULL; |
2389 | 2.57k | } |
2390 | 16.2k | if (in->encoder != NULL) { |
2391 | 2.57k | xmlCharEncCloseFunc(in->encoder); |
2392 | 2.57k | } |
2393 | 16.2k | if (in->closecallback != NULL) { |
2394 | 0 | in->closecallback(in->context); |
2395 | 0 | } |
2396 | 16.2k | if (in->buffer != NULL) { |
2397 | 16.2k | xmlBufFree(in->buffer); |
2398 | 16.2k | in->buffer = NULL; |
2399 | 16.2k | } |
2400 | | |
2401 | 16.2k | xmlFree(in); |
2402 | 16.2k | } |
2403 | | |
2404 | | #ifdef LIBXML_OUTPUT_ENABLED |
2405 | | /** |
2406 | | * xmlOutputBufferClose: |
2407 | | * @out: a buffered output |
2408 | | * |
2409 | | * flushes and close the output I/O channel |
2410 | | * and free up all the associated resources |
2411 | | * |
2412 | | * Returns the number of byte written or -1 in case of error. |
2413 | | */ |
2414 | | int |
2415 | | xmlOutputBufferClose(xmlOutputBufferPtr out) |
2416 | 0 | { |
2417 | 0 | int written; |
2418 | 0 | int err_rc = 0; |
2419 | |
|
2420 | 0 | if (out == NULL) |
2421 | 0 | return (-1); |
2422 | 0 | if (out->writecallback != NULL) |
2423 | 0 | xmlOutputBufferFlush(out); |
2424 | 0 | if (out->closecallback != NULL) { |
2425 | 0 | err_rc = out->closecallback(out->context); |
2426 | 0 | } |
2427 | 0 | written = out->written; |
2428 | 0 | if (out->conv) { |
2429 | 0 | xmlBufFree(out->conv); |
2430 | 0 | out->conv = NULL; |
2431 | 0 | } |
2432 | 0 | if (out->encoder != NULL) { |
2433 | 0 | xmlCharEncCloseFunc(out->encoder); |
2434 | 0 | } |
2435 | 0 | if (out->buffer != NULL) { |
2436 | 0 | xmlBufFree(out->buffer); |
2437 | 0 | out->buffer = NULL; |
2438 | 0 | } |
2439 | |
|
2440 | 0 | if (out->error) |
2441 | 0 | err_rc = -1; |
2442 | 0 | xmlFree(out); |
2443 | 0 | return ((err_rc == 0) ? written : err_rc); |
2444 | 0 | } |
2445 | | #endif /* LIBXML_OUTPUT_ENABLED */ |
2446 | | |
2447 | | xmlParserInputBufferPtr |
2448 | 0 | __xmlParserInputBufferCreateFilename(const char *URI, xmlCharEncoding enc) { |
2449 | 0 | xmlParserInputBufferPtr ret; |
2450 | 0 | int i = 0; |
2451 | 0 | void *context = NULL; |
2452 | |
|
2453 | 0 | if (xmlInputCallbackInitialized == 0) |
2454 | 0 | xmlRegisterDefaultInputCallbacks(); |
2455 | |
|
2456 | 0 | if (URI == NULL) return(NULL); |
2457 | | |
2458 | | /* |
2459 | | * Try to find one of the input accept method accepting that scheme |
2460 | | * Go in reverse to give precedence to user defined handlers. |
2461 | | */ |
2462 | 0 | if (context == NULL) { |
2463 | 0 | for (i = xmlInputCallbackNr - 1;i >= 0;i--) { |
2464 | 0 | if ((xmlInputCallbackTable[i].matchcallback != NULL) && |
2465 | 0 | (xmlInputCallbackTable[i].matchcallback(URI) != 0)) { |
2466 | 0 | context = xmlInputCallbackTable[i].opencallback(URI); |
2467 | 0 | if (context != NULL) { |
2468 | 0 | break; |
2469 | 0 | } |
2470 | 0 | } |
2471 | 0 | } |
2472 | 0 | } |
2473 | 0 | if (context == NULL) { |
2474 | 0 | return(NULL); |
2475 | 0 | } |
2476 | | |
2477 | | /* |
2478 | | * Allocate the Input buffer front-end. |
2479 | | */ |
2480 | 0 | ret = xmlAllocParserInputBuffer(enc); |
2481 | 0 | if (ret != NULL) { |
2482 | 0 | ret->context = context; |
2483 | 0 | ret->readcallback = xmlInputCallbackTable[i].readcallback; |
2484 | 0 | ret->closecallback = xmlInputCallbackTable[i].closecallback; |
2485 | | #ifdef LIBXML_ZLIB_ENABLED |
2486 | | if ((xmlInputCallbackTable[i].opencallback == xmlGzfileOpen) && |
2487 | | (strcmp(URI, "-") != 0)) { |
2488 | | #if defined(ZLIB_VERNUM) && ZLIB_VERNUM >= 0x1230 |
2489 | | ret->compressed = !gzdirect(context); |
2490 | | #else |
2491 | | if (((z_stream *)context)->avail_in > 4) { |
2492 | | char *cptr, buff4[4]; |
2493 | | cptr = (char *) ((z_stream *)context)->next_in; |
2494 | | if (gzread(context, buff4, 4) == 4) { |
2495 | | if (strncmp(buff4, cptr, 4) == 0) |
2496 | | ret->compressed = 0; |
2497 | | else |
2498 | | ret->compressed = 1; |
2499 | | gzrewind(context); |
2500 | | } |
2501 | | } |
2502 | | #endif |
2503 | | } |
2504 | | #endif |
2505 | | #ifdef LIBXML_LZMA_ENABLED |
2506 | | if ((xmlInputCallbackTable[i].opencallback == xmlXzfileOpen) && |
2507 | | (strcmp(URI, "-") != 0)) { |
2508 | | ret->compressed = __libxml2_xzcompressed(context); |
2509 | | } |
2510 | | #endif |
2511 | 0 | } |
2512 | 0 | else |
2513 | 0 | xmlInputCallbackTable[i].closecallback (context); |
2514 | |
|
2515 | 0 | return(ret); |
2516 | 0 | } |
2517 | | |
2518 | | /** |
2519 | | * xmlParserInputBufferCreateFilename: |
2520 | | * @URI: a C string containing the URI or filename |
2521 | | * @enc: the charset encoding if known |
2522 | | * |
2523 | | * Create a buffered parser input for the progressive parsing of a file |
2524 | | * If filename is "-' then we use stdin as the input. |
2525 | | * Automatic support for ZLIB/Compress compressed document is provided |
2526 | | * by default if found at compile-time. |
2527 | | * Do an encoding check if enc == XML_CHAR_ENCODING_NONE |
2528 | | * |
2529 | | * Returns the new parser input or NULL |
2530 | | */ |
2531 | | xmlParserInputBufferPtr |
2532 | 0 | xmlParserInputBufferCreateFilename(const char *URI, xmlCharEncoding enc) { |
2533 | 0 | if ((xmlParserInputBufferCreateFilenameValue)) { |
2534 | 0 | return xmlParserInputBufferCreateFilenameValue(URI, enc); |
2535 | 0 | } |
2536 | 0 | return __xmlParserInputBufferCreateFilename(URI, enc); |
2537 | 0 | } |
2538 | | |
2539 | | #ifdef LIBXML_OUTPUT_ENABLED |
2540 | | xmlOutputBufferPtr |
2541 | | __xmlOutputBufferCreateFilename(const char *URI, |
2542 | | xmlCharEncodingHandlerPtr encoder, |
2543 | 0 | int compression ATTRIBUTE_UNUSED) { |
2544 | 0 | xmlOutputBufferPtr ret; |
2545 | 0 | xmlURIPtr puri; |
2546 | 0 | int i = 0; |
2547 | 0 | void *context = NULL; |
2548 | 0 | char *unescaped = NULL; |
2549 | | #ifdef LIBXML_ZLIB_ENABLED |
2550 | | int is_file_uri = 1; |
2551 | | #endif |
2552 | |
|
2553 | 0 | if (xmlOutputCallbackInitialized == 0) |
2554 | 0 | xmlRegisterDefaultOutputCallbacks(); |
2555 | |
|
2556 | 0 | if (URI == NULL) return(NULL); |
2557 | | |
2558 | 0 | puri = xmlParseURI(URI); |
2559 | 0 | if (puri != NULL) { |
2560 | | #ifdef LIBXML_ZLIB_ENABLED |
2561 | | if ((puri->scheme != NULL) && |
2562 | | (!xmlStrEqual(BAD_CAST puri->scheme, BAD_CAST "file"))) |
2563 | | is_file_uri = 0; |
2564 | | #endif |
2565 | | /* |
2566 | | * try to limit the damages of the URI unescaping code. |
2567 | | */ |
2568 | 0 | if ((puri->scheme == NULL) || |
2569 | 0 | (xmlStrEqual(BAD_CAST puri->scheme, BAD_CAST "file"))) |
2570 | 0 | unescaped = xmlURIUnescapeString(URI, 0, NULL); |
2571 | 0 | xmlFreeURI(puri); |
2572 | 0 | } |
2573 | | |
2574 | | /* |
2575 | | * Try to find one of the output accept method accepting that scheme |
2576 | | * Go in reverse to give precedence to user defined handlers. |
2577 | | * try with an unescaped version of the URI |
2578 | | */ |
2579 | 0 | if (unescaped != NULL) { |
2580 | | #ifdef LIBXML_ZLIB_ENABLED |
2581 | | if ((compression > 0) && (compression <= 9) && (is_file_uri == 1)) { |
2582 | | context = xmlGzfileOpenW(unescaped, compression); |
2583 | | if (context != NULL) { |
2584 | | ret = xmlAllocOutputBufferInternal(encoder); |
2585 | | if (ret != NULL) { |
2586 | | ret->context = context; |
2587 | | ret->writecallback = xmlGzfileWrite; |
2588 | | ret->closecallback = xmlGzfileClose; |
2589 | | } |
2590 | | xmlFree(unescaped); |
2591 | | return(ret); |
2592 | | } |
2593 | | } |
2594 | | #endif |
2595 | 0 | for (i = xmlOutputCallbackNr - 1;i >= 0;i--) { |
2596 | 0 | if ((xmlOutputCallbackTable[i].matchcallback != NULL) && |
2597 | 0 | (xmlOutputCallbackTable[i].matchcallback(unescaped) != 0)) { |
2598 | | #if defined(LIBXML_HTTP_ENABLED) && defined(LIBXML_ZLIB_ENABLED) |
2599 | | /* Need to pass compression parameter into HTTP open calls */ |
2600 | | if (xmlOutputCallbackTable[i].matchcallback == xmlIOHTTPMatch) |
2601 | | context = xmlIOHTTPOpenW(unescaped, compression); |
2602 | | else |
2603 | | #endif |
2604 | 0 | context = xmlOutputCallbackTable[i].opencallback(unescaped); |
2605 | 0 | if (context != NULL) |
2606 | 0 | break; |
2607 | 0 | } |
2608 | 0 | } |
2609 | 0 | xmlFree(unescaped); |
2610 | 0 | } |
2611 | | |
2612 | | /* |
2613 | | * If this failed try with a non-escaped URI this may be a strange |
2614 | | * filename |
2615 | | */ |
2616 | 0 | if (context == NULL) { |
2617 | | #ifdef LIBXML_ZLIB_ENABLED |
2618 | | if ((compression > 0) && (compression <= 9) && (is_file_uri == 1)) { |
2619 | | context = xmlGzfileOpenW(URI, compression); |
2620 | | if (context != NULL) { |
2621 | | ret = xmlAllocOutputBufferInternal(encoder); |
2622 | | if (ret != NULL) { |
2623 | | ret->context = context; |
2624 | | ret->writecallback = xmlGzfileWrite; |
2625 | | ret->closecallback = xmlGzfileClose; |
2626 | | } |
2627 | | else |
2628 | | xmlGzfileClose(context); |
2629 | | return(ret); |
2630 | | } |
2631 | | } |
2632 | | #endif |
2633 | 0 | for (i = xmlOutputCallbackNr - 1;i >= 0;i--) { |
2634 | 0 | if ((xmlOutputCallbackTable[i].matchcallback != NULL) && |
2635 | 0 | (xmlOutputCallbackTable[i].matchcallback(URI) != 0)) { |
2636 | | #if defined(LIBXML_HTTP_ENABLED) && defined(LIBXML_ZLIB_ENABLED) |
2637 | | /* Need to pass compression parameter into HTTP open calls */ |
2638 | | if (xmlOutputCallbackTable[i].matchcallback == xmlIOHTTPMatch) |
2639 | | context = xmlIOHTTPOpenW(URI, compression); |
2640 | | else |
2641 | | #endif |
2642 | 0 | context = xmlOutputCallbackTable[i].opencallback(URI); |
2643 | 0 | if (context != NULL) |
2644 | 0 | break; |
2645 | 0 | } |
2646 | 0 | } |
2647 | 0 | } |
2648 | |
|
2649 | 0 | if (context == NULL) { |
2650 | 0 | return(NULL); |
2651 | 0 | } |
2652 | | |
2653 | | /* |
2654 | | * Allocate the Output buffer front-end. |
2655 | | */ |
2656 | 0 | ret = xmlAllocOutputBufferInternal(encoder); |
2657 | 0 | if (ret != NULL) { |
2658 | 0 | ret->context = context; |
2659 | 0 | ret->writecallback = xmlOutputCallbackTable[i].writecallback; |
2660 | 0 | ret->closecallback = xmlOutputCallbackTable[i].closecallback; |
2661 | 0 | } |
2662 | 0 | return(ret); |
2663 | 0 | } |
2664 | | |
2665 | | /** |
2666 | | * xmlOutputBufferCreateFilename: |
2667 | | * @URI: a C string containing the URI or filename |
2668 | | * @encoder: the encoding converter or NULL |
2669 | | * @compression: the compression ration (0 none, 9 max). |
2670 | | * |
2671 | | * Create a buffered output for the progressive saving of a file |
2672 | | * If filename is "-' then we use stdout as the output. |
2673 | | * Automatic support for ZLIB/Compress compressed document is provided |
2674 | | * by default if found at compile-time. |
2675 | | * TODO: currently if compression is set, the library only support |
2676 | | * writing to a local file. |
2677 | | * |
2678 | | * Returns the new output or NULL |
2679 | | */ |
2680 | | xmlOutputBufferPtr |
2681 | | xmlOutputBufferCreateFilename(const char *URI, |
2682 | | xmlCharEncodingHandlerPtr encoder, |
2683 | 0 | int compression ATTRIBUTE_UNUSED) { |
2684 | 0 | if ((xmlOutputBufferCreateFilenameValue)) { |
2685 | 0 | return xmlOutputBufferCreateFilenameValue(URI, encoder, compression); |
2686 | 0 | } |
2687 | 0 | return __xmlOutputBufferCreateFilename(URI, encoder, compression); |
2688 | 0 | } |
2689 | | #endif /* LIBXML_OUTPUT_ENABLED */ |
2690 | | |
2691 | | /** |
2692 | | * xmlParserInputBufferCreateFile: |
2693 | | * @file: a FILE* |
2694 | | * @enc: the charset encoding if known |
2695 | | * |
2696 | | * Create a buffered parser input for the progressive parsing of a FILE * |
2697 | | * buffered C I/O |
2698 | | * |
2699 | | * Returns the new parser input or NULL |
2700 | | */ |
2701 | | xmlParserInputBufferPtr |
2702 | 0 | xmlParserInputBufferCreateFile(FILE *file, xmlCharEncoding enc) { |
2703 | 0 | xmlParserInputBufferPtr ret; |
2704 | |
|
2705 | 0 | if (xmlInputCallbackInitialized == 0) |
2706 | 0 | xmlRegisterDefaultInputCallbacks(); |
2707 | |
|
2708 | 0 | if (file == NULL) return(NULL); |
2709 | | |
2710 | 0 | ret = xmlAllocParserInputBuffer(enc); |
2711 | 0 | if (ret != NULL) { |
2712 | 0 | ret->context = file; |
2713 | 0 | ret->readcallback = xmlFileRead; |
2714 | 0 | ret->closecallback = xmlFileFlush; |
2715 | 0 | } |
2716 | |
|
2717 | 0 | return(ret); |
2718 | 0 | } |
2719 | | |
2720 | | #ifdef LIBXML_OUTPUT_ENABLED |
2721 | | /** |
2722 | | * xmlOutputBufferCreateFile: |
2723 | | * @file: a FILE* |
2724 | | * @encoder: the encoding converter or NULL |
2725 | | * |
2726 | | * Create a buffered output for the progressive saving to a FILE * |
2727 | | * buffered C I/O |
2728 | | * |
2729 | | * Returns the new parser output or NULL |
2730 | | */ |
2731 | | xmlOutputBufferPtr |
2732 | 0 | xmlOutputBufferCreateFile(FILE *file, xmlCharEncodingHandlerPtr encoder) { |
2733 | 0 | xmlOutputBufferPtr ret; |
2734 | |
|
2735 | 0 | if (xmlOutputCallbackInitialized == 0) |
2736 | 0 | xmlRegisterDefaultOutputCallbacks(); |
2737 | |
|
2738 | 0 | if (file == NULL) return(NULL); |
2739 | | |
2740 | 0 | ret = xmlAllocOutputBufferInternal(encoder); |
2741 | 0 | if (ret != NULL) { |
2742 | 0 | ret->context = file; |
2743 | 0 | ret->writecallback = xmlFileWrite; |
2744 | 0 | ret->closecallback = xmlFileFlush; |
2745 | 0 | } |
2746 | |
|
2747 | 0 | return(ret); |
2748 | 0 | } |
2749 | | |
2750 | | /** |
2751 | | * xmlOutputBufferCreateBuffer: |
2752 | | * @buffer: a xmlBufferPtr |
2753 | | * @encoder: the encoding converter or NULL |
2754 | | * |
2755 | | * Create a buffered output for the progressive saving to a xmlBuffer |
2756 | | * |
2757 | | * Returns the new parser output or NULL |
2758 | | */ |
2759 | | xmlOutputBufferPtr |
2760 | | xmlOutputBufferCreateBuffer(xmlBufferPtr buffer, |
2761 | 0 | xmlCharEncodingHandlerPtr encoder) { |
2762 | 0 | xmlOutputBufferPtr ret; |
2763 | |
|
2764 | 0 | if (buffer == NULL) return(NULL); |
2765 | | |
2766 | 0 | ret = xmlOutputBufferCreateIO(xmlBufferWrite, NULL, (void *) buffer, |
2767 | 0 | encoder); |
2768 | |
|
2769 | 0 | return(ret); |
2770 | 0 | } |
2771 | | |
2772 | | /** |
2773 | | * xmlOutputBufferGetContent: |
2774 | | * @out: an xmlOutputBufferPtr |
2775 | | * |
2776 | | * Gives a pointer to the data currently held in the output buffer |
2777 | | * |
2778 | | * Returns a pointer to the data or NULL in case of error |
2779 | | */ |
2780 | | const xmlChar * |
2781 | 0 | xmlOutputBufferGetContent(xmlOutputBufferPtr out) { |
2782 | 0 | if ((out == NULL) || (out->buffer == NULL)) |
2783 | 0 | return(NULL); |
2784 | | |
2785 | 0 | return(xmlBufContent(out->buffer)); |
2786 | 0 | } |
2787 | | |
2788 | | /** |
2789 | | * xmlOutputBufferGetSize: |
2790 | | * @out: an xmlOutputBufferPtr |
2791 | | * |
2792 | | * Gives the length of the data currently held in the output buffer |
2793 | | * |
2794 | | * Returns 0 in case or error or no data is held, the size otherwise |
2795 | | */ |
2796 | | size_t |
2797 | 0 | xmlOutputBufferGetSize(xmlOutputBufferPtr out) { |
2798 | 0 | if ((out == NULL) || (out->buffer == NULL)) |
2799 | 0 | return(0); |
2800 | | |
2801 | 0 | return(xmlBufUse(out->buffer)); |
2802 | 0 | } |
2803 | | |
2804 | | |
2805 | | #endif /* LIBXML_OUTPUT_ENABLED */ |
2806 | | |
2807 | | /** |
2808 | | * xmlParserInputBufferCreateFd: |
2809 | | * @fd: a file descriptor number |
2810 | | * @enc: the charset encoding if known |
2811 | | * |
2812 | | * Create a buffered parser input for the progressive parsing for the input |
2813 | | * from a file descriptor |
2814 | | * |
2815 | | * Returns the new parser input or NULL |
2816 | | */ |
2817 | | xmlParserInputBufferPtr |
2818 | 0 | xmlParserInputBufferCreateFd(int fd, xmlCharEncoding enc) { |
2819 | 0 | xmlParserInputBufferPtr ret; |
2820 | |
|
2821 | 0 | if (fd < 0) return(NULL); |
2822 | | |
2823 | 0 | ret = xmlAllocParserInputBuffer(enc); |
2824 | 0 | if (ret != NULL) { |
2825 | 0 | ret->context = (void *) (ptrdiff_t) fd; |
2826 | 0 | ret->readcallback = xmlFdRead; |
2827 | 0 | ret->closecallback = xmlFdClose; |
2828 | 0 | } |
2829 | |
|
2830 | 0 | return(ret); |
2831 | 0 | } |
2832 | | |
2833 | | typedef struct { |
2834 | | char *mem; |
2835 | | const char *cur; |
2836 | | size_t size; |
2837 | | } xmlMemIOCtxt; |
2838 | | |
2839 | | static int |
2840 | 0 | xmlMemRead(void *vctxt, char *buf, int size) { |
2841 | 0 | xmlMemIOCtxt *ctxt = vctxt; |
2842 | |
|
2843 | 0 | if ((size_t) size > ctxt->size) |
2844 | 0 | size = ctxt->size; |
2845 | |
|
2846 | 0 | memcpy(buf, ctxt->cur, size); |
2847 | 0 | ctxt->cur += size; |
2848 | 0 | ctxt->size -= size; |
2849 | |
|
2850 | 0 | return size; |
2851 | 0 | } |
2852 | | |
2853 | | static int |
2854 | 0 | xmlMemClose(void *vctxt) { |
2855 | 0 | xmlMemIOCtxt *ctxt = vctxt; |
2856 | |
|
2857 | 0 | if (ctxt->mem != 0) |
2858 | 0 | xmlFree(ctxt->mem); |
2859 | 0 | xmlFree(ctxt); |
2860 | 0 | return(0); |
2861 | 0 | } |
2862 | | |
2863 | | /** |
2864 | | * xmlParserInputBufferCreateMem: |
2865 | | * @mem: the memory input |
2866 | | * @size: the length of the memory block |
2867 | | * @enc: the charset encoding if known |
2868 | | * |
2869 | | * Create a parser input buffer for parsing from a memory area. |
2870 | | * |
2871 | | * This function makes a copy of the whole input buffer. If you are sure |
2872 | | * that the contents of the buffer will remain valid until the document |
2873 | | * was parsed, you can avoid the copy by using |
2874 | | * xmlParserInputBufferCreateStatic. |
2875 | | * |
2876 | | * The encoding argument is deprecated and should be set to |
2877 | | * XML_CHAR_ENCODING_NONE. The encoding can be changed with |
2878 | | * xmlSwitchEncoding or xmlSwitchEncodingName later on. |
2879 | | * |
2880 | | * Returns the new parser input or NULL in case of error. |
2881 | | */ |
2882 | | xmlParserInputBufferPtr |
2883 | 0 | xmlParserInputBufferCreateMem(const char *mem, int size, xmlCharEncoding enc) { |
2884 | 0 | xmlParserInputBufferPtr buf; |
2885 | 0 | xmlMemIOCtxt *ctxt; |
2886 | 0 | char *copy; |
2887 | |
|
2888 | 0 | if ((size < 0) || (mem == NULL)) |
2889 | 0 | return(NULL); |
2890 | | |
2891 | 0 | copy = (char *) xmlStrndup((const xmlChar *) mem, size); |
2892 | 0 | if (copy == NULL) |
2893 | 0 | return(NULL); |
2894 | | |
2895 | 0 | buf = xmlParserInputBufferCreateStatic(copy, size, enc); |
2896 | 0 | if (buf == NULL) { |
2897 | 0 | xmlFree(copy); |
2898 | 0 | return(NULL); |
2899 | 0 | } |
2900 | | |
2901 | 0 | ctxt = buf->context; |
2902 | 0 | ctxt->mem = copy; |
2903 | |
|
2904 | 0 | return(buf); |
2905 | 0 | } |
2906 | | |
2907 | | /** |
2908 | | * xmlParserInputBufferCreateStatic: |
2909 | | * @mem: the memory input |
2910 | | * @size: the length of the memory block |
2911 | | * @enc: the charset encoding if known |
2912 | | * |
2913 | | * Create a parser input buffer for parsing from a memory area. |
2914 | | * |
2915 | | * This functions assumes that the contents of the input buffer remain |
2916 | | * valid until the document was parsed. Use xmlParserInputBufferCreateMem |
2917 | | * otherwise. |
2918 | | * |
2919 | | * The encoding argument is deprecated and should be set to |
2920 | | * XML_CHAR_ENCODING_NONE. The encoding can be changed with |
2921 | | * xmlSwitchEncoding or xmlSwitchEncodingName later on. |
2922 | | * |
2923 | | * Returns the new parser input or NULL in case of error. |
2924 | | */ |
2925 | | xmlParserInputBufferPtr |
2926 | | xmlParserInputBufferCreateStatic(const char *mem, int size, |
2927 | 0 | xmlCharEncoding enc) { |
2928 | 0 | xmlParserInputBufferPtr ret; |
2929 | 0 | xmlMemIOCtxt *ctxt; |
2930 | |
|
2931 | 0 | if ((size < 0) || (mem == NULL)) |
2932 | 0 | return(NULL); |
2933 | | |
2934 | 0 | ret = xmlAllocParserInputBuffer(enc); |
2935 | 0 | if (ret == NULL) |
2936 | 0 | return(NULL); |
2937 | | |
2938 | 0 | ctxt = xmlMalloc(sizeof(*ctxt)); |
2939 | 0 | if (ctxt == NULL) { |
2940 | 0 | xmlFreeParserInputBuffer(ret); |
2941 | 0 | return(NULL); |
2942 | 0 | } |
2943 | 0 | ctxt->mem = NULL; |
2944 | 0 | ctxt->cur = mem; |
2945 | 0 | ctxt->size = size; |
2946 | |
|
2947 | 0 | ret->context = ctxt; |
2948 | 0 | ret->readcallback = xmlMemRead; |
2949 | 0 | ret->closecallback = xmlMemClose; |
2950 | |
|
2951 | 0 | return(ret); |
2952 | 0 | } |
2953 | | |
2954 | | typedef struct { |
2955 | | const xmlChar *str; |
2956 | | } xmlStringIOCtxt; |
2957 | | |
2958 | | static int |
2959 | 0 | xmlStringRead(void *vctxt, char *buf, int size) { |
2960 | 0 | xmlStringIOCtxt *ctxt = vctxt; |
2961 | 0 | const xmlChar *zero; |
2962 | 0 | size_t len; |
2963 | |
|
2964 | 0 | zero = memchr(ctxt->str, 0, size); |
2965 | 0 | len = zero ? zero - ctxt->str : size; |
2966 | |
|
2967 | 0 | memcpy(buf, ctxt->str, len); |
2968 | 0 | ctxt->str += len; |
2969 | |
|
2970 | 0 | return(len); |
2971 | 0 | } |
2972 | | |
2973 | | static int |
2974 | 0 | xmlStringClose(void *vctxt) { |
2975 | 0 | xmlFree(vctxt); |
2976 | 0 | return(0); |
2977 | 0 | } |
2978 | | |
2979 | | /** |
2980 | | * xmlParserInputBufferCreateString: |
2981 | | * @str: a null-terminated string |
2982 | | * |
2983 | | * Create a buffered parser input for the progressive parsing for the input |
2984 | | * from a null-terminated C string. |
2985 | | * |
2986 | | * Returns the new parser input or NULL |
2987 | | */ |
2988 | | xmlParserInputBufferPtr |
2989 | 0 | xmlParserInputBufferCreateString(const xmlChar *str) { |
2990 | 0 | xmlParserInputBufferPtr ret; |
2991 | 0 | xmlStringIOCtxt *ctxt; |
2992 | |
|
2993 | 0 | if (str == NULL) return(NULL); |
2994 | | |
2995 | 0 | ret = xmlAllocParserInputBuffer(XML_CHAR_ENCODING_NONE); |
2996 | 0 | if (ret == NULL) |
2997 | 0 | return(NULL); |
2998 | | |
2999 | 0 | ctxt = xmlMalloc(sizeof(*ctxt)); |
3000 | 0 | if (ctxt == NULL) { |
3001 | 0 | xmlFreeParserInputBuffer(ret); |
3002 | 0 | return(NULL); |
3003 | 0 | } |
3004 | 0 | ctxt->str = str; |
3005 | |
|
3006 | 0 | ret->context = ctxt; |
3007 | 0 | ret->readcallback = xmlStringRead; |
3008 | 0 | ret->closecallback = xmlStringClose; |
3009 | |
|
3010 | 0 | return(ret); |
3011 | 0 | } |
3012 | | |
3013 | | #ifdef LIBXML_OUTPUT_ENABLED |
3014 | | /** |
3015 | | * xmlOutputBufferCreateFd: |
3016 | | * @fd: a file descriptor number |
3017 | | * @encoder: the encoding converter or NULL |
3018 | | * |
3019 | | * Create a buffered output for the progressive saving |
3020 | | * to a file descriptor |
3021 | | * |
3022 | | * Returns the new parser output or NULL |
3023 | | */ |
3024 | | xmlOutputBufferPtr |
3025 | 0 | xmlOutputBufferCreateFd(int fd, xmlCharEncodingHandlerPtr encoder) { |
3026 | 0 | xmlOutputBufferPtr ret; |
3027 | |
|
3028 | 0 | if (fd < 0) return(NULL); |
3029 | | |
3030 | 0 | ret = xmlAllocOutputBufferInternal(encoder); |
3031 | 0 | if (ret != NULL) { |
3032 | 0 | ret->context = (void *) (ptrdiff_t) fd; |
3033 | 0 | ret->writecallback = xmlFdWrite; |
3034 | 0 | ret->closecallback = NULL; |
3035 | 0 | } |
3036 | |
|
3037 | 0 | return(ret); |
3038 | 0 | } |
3039 | | #endif /* LIBXML_OUTPUT_ENABLED */ |
3040 | | |
3041 | | /** |
3042 | | * xmlParserInputBufferCreateIO: |
3043 | | * @ioread: an I/O read function |
3044 | | * @ioclose: an I/O close function |
3045 | | * @ioctx: an I/O handler |
3046 | | * @enc: the charset encoding if known |
3047 | | * |
3048 | | * Create a buffered parser input for the progressive parsing for the input |
3049 | | * from an I/O handler |
3050 | | * |
3051 | | * Returns the new parser input or NULL |
3052 | | */ |
3053 | | xmlParserInputBufferPtr |
3054 | | xmlParserInputBufferCreateIO(xmlInputReadCallback ioread, |
3055 | 0 | xmlInputCloseCallback ioclose, void *ioctx, xmlCharEncoding enc) { |
3056 | 0 | xmlParserInputBufferPtr ret; |
3057 | |
|
3058 | 0 | if (ioread == NULL) return(NULL); |
3059 | | |
3060 | 0 | ret = xmlAllocParserInputBuffer(enc); |
3061 | 0 | if (ret != NULL) { |
3062 | 0 | ret->context = (void *) ioctx; |
3063 | 0 | ret->readcallback = ioread; |
3064 | 0 | ret->closecallback = ioclose; |
3065 | 0 | } |
3066 | |
|
3067 | 0 | return(ret); |
3068 | 0 | } |
3069 | | |
3070 | | #ifdef LIBXML_OUTPUT_ENABLED |
3071 | | /** |
3072 | | * xmlOutputBufferCreateIO: |
3073 | | * @iowrite: an I/O write function |
3074 | | * @ioclose: an I/O close function |
3075 | | * @ioctx: an I/O handler |
3076 | | * @encoder: the charset encoding if known |
3077 | | * |
3078 | | * Create a buffered output for the progressive saving |
3079 | | * to an I/O handler |
3080 | | * |
3081 | | * Returns the new parser output or NULL |
3082 | | */ |
3083 | | xmlOutputBufferPtr |
3084 | | xmlOutputBufferCreateIO(xmlOutputWriteCallback iowrite, |
3085 | | xmlOutputCloseCallback ioclose, void *ioctx, |
3086 | 0 | xmlCharEncodingHandlerPtr encoder) { |
3087 | 0 | xmlOutputBufferPtr ret; |
3088 | |
|
3089 | 0 | if (iowrite == NULL) return(NULL); |
3090 | | |
3091 | 0 | ret = xmlAllocOutputBufferInternal(encoder); |
3092 | 0 | if (ret != NULL) { |
3093 | 0 | ret->context = (void *) ioctx; |
3094 | 0 | ret->writecallback = iowrite; |
3095 | 0 | ret->closecallback = ioclose; |
3096 | 0 | } |
3097 | |
|
3098 | 0 | return(ret); |
3099 | 0 | } |
3100 | | #endif /* LIBXML_OUTPUT_ENABLED */ |
3101 | | |
3102 | | /** |
3103 | | * xmlParserInputBufferCreateFilenameDefault: |
3104 | | * @func: function pointer to the new ParserInputBufferCreateFilenameFunc |
3105 | | * |
3106 | | * Registers a callback for URI input file handling |
3107 | | * |
3108 | | * Returns the old value of the registration function |
3109 | | */ |
3110 | | xmlParserInputBufferCreateFilenameFunc |
3111 | | xmlParserInputBufferCreateFilenameDefault(xmlParserInputBufferCreateFilenameFunc func) |
3112 | 0 | { |
3113 | 0 | xmlParserInputBufferCreateFilenameFunc old = xmlParserInputBufferCreateFilenameValue; |
3114 | 0 | if (old == NULL) { |
3115 | 0 | old = __xmlParserInputBufferCreateFilename; |
3116 | 0 | } |
3117 | |
|
3118 | 0 | xmlParserInputBufferCreateFilenameValue = func; |
3119 | 0 | return(old); |
3120 | 0 | } |
3121 | | |
3122 | | /** |
3123 | | * xmlOutputBufferCreateFilenameDefault: |
3124 | | * @func: function pointer to the new OutputBufferCreateFilenameFunc |
3125 | | * |
3126 | | * Registers a callback for URI output file handling |
3127 | | * |
3128 | | * Returns the old value of the registration function |
3129 | | */ |
3130 | | xmlOutputBufferCreateFilenameFunc |
3131 | | xmlOutputBufferCreateFilenameDefault(xmlOutputBufferCreateFilenameFunc func) |
3132 | 0 | { |
3133 | 0 | xmlOutputBufferCreateFilenameFunc old = xmlOutputBufferCreateFilenameValue; |
3134 | 0 | #ifdef LIBXML_OUTPUT_ENABLED |
3135 | 0 | if (old == NULL) { |
3136 | 0 | old = __xmlOutputBufferCreateFilename; |
3137 | 0 | } |
3138 | 0 | #endif |
3139 | 0 | xmlOutputBufferCreateFilenameValue = func; |
3140 | 0 | return(old); |
3141 | 0 | } |
3142 | | |
3143 | | /** |
3144 | | * xmlParserInputBufferPush: |
3145 | | * @in: a buffered parser input |
3146 | | * @len: the size in bytes of the array. |
3147 | | * @buf: an char array |
3148 | | * |
3149 | | * Push the content of the arry in the input buffer |
3150 | | * This routine handle the I18N transcoding to internal UTF-8 |
3151 | | * This is used when operating the parser in progressive (push) mode. |
3152 | | * |
3153 | | * Returns the number of chars read and stored in the buffer, or -1 |
3154 | | * in case of error. |
3155 | | */ |
3156 | | int |
3157 | | xmlParserInputBufferPush(xmlParserInputBufferPtr in, |
3158 | 84.8k | int len, const char *buf) { |
3159 | 84.8k | int nbchars = 0; |
3160 | 84.8k | int ret; |
3161 | | |
3162 | 84.8k | if (len < 0) return(0); |
3163 | 84.8k | if ((in == NULL) || (in->error)) return(-1); |
3164 | 84.8k | if (in->encoder != NULL) { |
3165 | | /* |
3166 | | * Store the data in the incoming raw buffer |
3167 | | */ |
3168 | 44.0k | if (in->raw == NULL) { |
3169 | 0 | in->raw = xmlBufCreate(); |
3170 | 0 | if (in->raw == NULL) { |
3171 | 0 | in->error = XML_ERR_NO_MEMORY; |
3172 | 0 | return(-1); |
3173 | 0 | } |
3174 | 0 | } |
3175 | 44.0k | ret = xmlBufAdd(in->raw, (const xmlChar *) buf, len); |
3176 | 44.0k | if (ret != 0) { |
3177 | 0 | in->error = XML_ERR_NO_MEMORY; |
3178 | 0 | return(-1); |
3179 | 0 | } |
3180 | | |
3181 | | /* |
3182 | | * convert as much as possible to the parser reading buffer. |
3183 | | */ |
3184 | 44.0k | nbchars = xmlCharEncInput(in); |
3185 | 44.0k | if (nbchars < 0) |
3186 | 44 | return(-1); |
3187 | 44.0k | } else { |
3188 | 40.8k | nbchars = len; |
3189 | 40.8k | ret = xmlBufAdd(in->buffer, (xmlChar *) buf, nbchars); |
3190 | 40.8k | if (ret != 0) { |
3191 | 0 | in->error = XML_ERR_NO_MEMORY; |
3192 | 0 | return(-1); |
3193 | 0 | } |
3194 | 40.8k | } |
3195 | 84.8k | return(nbchars); |
3196 | 84.8k | } |
3197 | | |
3198 | | /** |
3199 | | * endOfInput: |
3200 | | * |
3201 | | * When reading from an Input channel indicated end of file or error |
3202 | | * don't reread from it again. |
3203 | | */ |
3204 | | static int |
3205 | | endOfInput (void * context ATTRIBUTE_UNUSED, |
3206 | | char * buffer ATTRIBUTE_UNUSED, |
3207 | 0 | int len ATTRIBUTE_UNUSED) { |
3208 | 0 | return(0); |
3209 | 0 | } |
3210 | | |
3211 | | /** |
3212 | | * xmlParserInputBufferGrow: |
3213 | | * @in: a buffered parser input |
3214 | | * @len: indicative value of the amount of chars to read |
3215 | | * |
3216 | | * Grow up the content of the input buffer, the old data are preserved |
3217 | | * This routine handle the I18N transcoding to internal UTF-8 |
3218 | | * This routine is used when operating the parser in normal (pull) mode |
3219 | | * |
3220 | | * TODO: one should be able to remove one extra copy by copying directly |
3221 | | * onto in->buffer or in->raw |
3222 | | * |
3223 | | * Returns the number of chars read and stored in the buffer, or -1 |
3224 | | * in case of error. |
3225 | | */ |
3226 | | int |
3227 | 0 | xmlParserInputBufferGrow(xmlParserInputBufferPtr in, int len) { |
3228 | 0 | xmlBufPtr buf; |
3229 | 0 | int res = 0; |
3230 | |
|
3231 | 0 | if ((in == NULL) || (in->error)) return(-1); |
3232 | 0 | if ((len <= MINLEN) && (len != 4)) |
3233 | 0 | len = MINLEN; |
3234 | |
|
3235 | 0 | if (in->encoder == NULL) { |
3236 | 0 | if (in->readcallback == NULL) |
3237 | 0 | return(0); |
3238 | 0 | buf = in->buffer; |
3239 | 0 | } else { |
3240 | 0 | if (in->raw == NULL) { |
3241 | 0 | in->raw = xmlBufCreate(); |
3242 | 0 | } |
3243 | 0 | buf = in->raw; |
3244 | 0 | } |
3245 | | |
3246 | | /* |
3247 | | * Call the read method for this I/O type. |
3248 | | */ |
3249 | 0 | if (in->readcallback != NULL) { |
3250 | 0 | if (xmlBufGrow(buf, len + 1) < 0) { |
3251 | 0 | in->error = XML_ERR_NO_MEMORY; |
3252 | 0 | return(-1); |
3253 | 0 | } |
3254 | | |
3255 | 0 | res = in->readcallback(in->context, (char *)xmlBufEnd(buf), len); |
3256 | 0 | if (res <= 0) |
3257 | 0 | in->readcallback = endOfInput; |
3258 | 0 | if (res < 0) { |
3259 | 0 | in->error = XML_IO_UNKNOWN; |
3260 | 0 | return(-1); |
3261 | 0 | } |
3262 | | |
3263 | 0 | if (xmlBufAddLen(buf, res) < 0) { |
3264 | 0 | in->error = XML_ERR_NO_MEMORY; |
3265 | 0 | return(-1); |
3266 | 0 | } |
3267 | 0 | } |
3268 | | |
3269 | | /* |
3270 | | * try to establish compressed status of input if not done already |
3271 | | */ |
3272 | 0 | if (in->compressed == -1) { |
3273 | | #ifdef LIBXML_LZMA_ENABLED |
3274 | | if (in->readcallback == xmlXzfileRead) |
3275 | | in->compressed = __libxml2_xzcompressed(in->context); |
3276 | | #endif |
3277 | 0 | } |
3278 | |
|
3279 | 0 | if (in->encoder != NULL) { |
3280 | 0 | res = xmlCharEncInput(in); |
3281 | 0 | if (res < 0) |
3282 | 0 | return(-1); |
3283 | 0 | } |
3284 | 0 | return(res); |
3285 | 0 | } |
3286 | | |
3287 | | /** |
3288 | | * xmlParserInputBufferRead: |
3289 | | * @in: a buffered parser input |
3290 | | * @len: indicative value of the amount of chars to read |
3291 | | * |
3292 | | * Refresh the content of the input buffer, the old data are considered |
3293 | | * consumed |
3294 | | * This routine handle the I18N transcoding to internal UTF-8 |
3295 | | * |
3296 | | * Returns the number of chars read and stored in the buffer, or -1 |
3297 | | * in case of error. |
3298 | | */ |
3299 | | int |
3300 | 0 | xmlParserInputBufferRead(xmlParserInputBufferPtr in, int len) { |
3301 | 0 | return(xmlParserInputBufferGrow(in, len)); |
3302 | 0 | } |
3303 | | |
3304 | | #ifdef LIBXML_OUTPUT_ENABLED |
3305 | | /** |
3306 | | * xmlOutputBufferWrite: |
3307 | | * @out: a buffered parser output |
3308 | | * @len: the size in bytes of the array. |
3309 | | * @buf: an char array |
3310 | | * |
3311 | | * Write the content of the array in the output I/O buffer |
3312 | | * This routine handle the I18N transcoding from internal UTF-8 |
3313 | | * The buffer is lossless, i.e. will store in case of partial |
3314 | | * or delayed writes. |
3315 | | * |
3316 | | * Returns the number of chars immediately written, or -1 |
3317 | | * in case of error. |
3318 | | */ |
3319 | | int |
3320 | 0 | xmlOutputBufferWrite(xmlOutputBufferPtr out, int len, const char *buf) { |
3321 | 0 | int nbchars = 0; /* number of chars to output to I/O */ |
3322 | 0 | int ret; /* return from function call */ |
3323 | 0 | int written = 0; /* number of char written to I/O so far */ |
3324 | 0 | int chunk; /* number of byte current processed from buf */ |
3325 | |
|
3326 | 0 | if ((out == NULL) || (out->error)) return(-1); |
3327 | 0 | if (len < 0) return(0); |
3328 | 0 | if (out->error) return(-1); |
3329 | | |
3330 | 0 | do { |
3331 | 0 | chunk = len; |
3332 | 0 | if (chunk > 4 * MINLEN) |
3333 | 0 | chunk = 4 * MINLEN; |
3334 | | |
3335 | | /* |
3336 | | * first handle encoding stuff. |
3337 | | */ |
3338 | 0 | if (out->encoder != NULL) { |
3339 | | /* |
3340 | | * Store the data in the incoming raw buffer |
3341 | | */ |
3342 | 0 | if (out->conv == NULL) { |
3343 | 0 | out->conv = xmlBufCreate(); |
3344 | 0 | } |
3345 | 0 | ret = xmlBufAdd(out->buffer, (const xmlChar *) buf, chunk); |
3346 | 0 | if (ret != 0) |
3347 | 0 | return(-1); |
3348 | | |
3349 | 0 | if ((xmlBufUse(out->buffer) < MINLEN) && (chunk == len)) |
3350 | 0 | goto done; |
3351 | | |
3352 | | /* |
3353 | | * convert as much as possible to the parser reading buffer. |
3354 | | */ |
3355 | 0 | ret = xmlCharEncOutput(out, 0); |
3356 | 0 | if ((ret < 0) && (ret != -3)) { |
3357 | 0 | xmlIOErr(XML_IO_ENCODER, NULL); |
3358 | 0 | out->error = XML_IO_ENCODER; |
3359 | 0 | return(-1); |
3360 | 0 | } |
3361 | 0 | if (out->writecallback) |
3362 | 0 | nbchars = xmlBufUse(out->conv); |
3363 | 0 | else |
3364 | 0 | nbchars = ret >= 0 ? ret : 0; |
3365 | 0 | } else { |
3366 | 0 | ret = xmlBufAdd(out->buffer, (const xmlChar *) buf, chunk); |
3367 | 0 | if (ret != 0) |
3368 | 0 | return(-1); |
3369 | 0 | if (out->writecallback) |
3370 | 0 | nbchars = xmlBufUse(out->buffer); |
3371 | 0 | else |
3372 | 0 | nbchars = chunk; |
3373 | 0 | } |
3374 | 0 | buf += chunk; |
3375 | 0 | len -= chunk; |
3376 | |
|
3377 | 0 | if (out->writecallback) { |
3378 | 0 | if ((nbchars < MINLEN) && (len <= 0)) |
3379 | 0 | goto done; |
3380 | | |
3381 | | /* |
3382 | | * second write the stuff to the I/O channel |
3383 | | */ |
3384 | 0 | if (out->encoder != NULL) { |
3385 | 0 | ret = out->writecallback(out->context, |
3386 | 0 | (const char *)xmlBufContent(out->conv), nbchars); |
3387 | 0 | if (ret >= 0) |
3388 | 0 | xmlBufShrink(out->conv, ret); |
3389 | 0 | } else { |
3390 | 0 | ret = out->writecallback(out->context, |
3391 | 0 | (const char *)xmlBufContent(out->buffer), nbchars); |
3392 | 0 | if (ret >= 0) |
3393 | 0 | xmlBufShrink(out->buffer, ret); |
3394 | 0 | } |
3395 | 0 | if (ret < 0) { |
3396 | 0 | xmlIOErr(XML_IO_WRITE, NULL); |
3397 | 0 | out->error = XML_IO_WRITE; |
3398 | 0 | return(ret); |
3399 | 0 | } |
3400 | 0 | if (out->written > INT_MAX - ret) |
3401 | 0 | out->written = INT_MAX; |
3402 | 0 | else |
3403 | 0 | out->written += ret; |
3404 | 0 | } |
3405 | 0 | written += nbchars; |
3406 | 0 | } while (len > 0); |
3407 | | |
3408 | 0 | done: |
3409 | 0 | return(written); |
3410 | 0 | } |
3411 | | |
3412 | | /** |
3413 | | * xmlEscapeContent: |
3414 | | * @out: a pointer to an array of bytes to store the result |
3415 | | * @outlen: the length of @out |
3416 | | * @in: a pointer to an array of unescaped UTF-8 bytes |
3417 | | * @inlen: the length of @in |
3418 | | * |
3419 | | * Take a block of UTF-8 chars in and escape them. |
3420 | | * Returns 0 if success, or -1 otherwise |
3421 | | * The value of @inlen after return is the number of octets consumed |
3422 | | * if the return value is positive, else unpredictable. |
3423 | | * The value of @outlen after return is the number of octets consumed. |
3424 | | */ |
3425 | | static int |
3426 | | xmlEscapeContent(unsigned char* out, int *outlen, |
3427 | 0 | const xmlChar* in, int *inlen) { |
3428 | 0 | unsigned char* outstart = out; |
3429 | 0 | const unsigned char* base = in; |
3430 | 0 | unsigned char* outend = out + *outlen; |
3431 | 0 | const unsigned char* inend; |
3432 | |
|
3433 | 0 | inend = in + (*inlen); |
3434 | |
|
3435 | 0 | while ((in < inend) && (out < outend)) { |
3436 | 0 | if (*in == '<') { |
3437 | 0 | if (outend - out < 4) break; |
3438 | 0 | *out++ = '&'; |
3439 | 0 | *out++ = 'l'; |
3440 | 0 | *out++ = 't'; |
3441 | 0 | *out++ = ';'; |
3442 | 0 | } else if (*in == '>') { |
3443 | 0 | if (outend - out < 4) break; |
3444 | 0 | *out++ = '&'; |
3445 | 0 | *out++ = 'g'; |
3446 | 0 | *out++ = 't'; |
3447 | 0 | *out++ = ';'; |
3448 | 0 | } else if (*in == '&') { |
3449 | 0 | if (outend - out < 5) break; |
3450 | 0 | *out++ = '&'; |
3451 | 0 | *out++ = 'a'; |
3452 | 0 | *out++ = 'm'; |
3453 | 0 | *out++ = 'p'; |
3454 | 0 | *out++ = ';'; |
3455 | 0 | } else if (*in == '\r') { |
3456 | 0 | if (outend - out < 5) break; |
3457 | 0 | *out++ = '&'; |
3458 | 0 | *out++ = '#'; |
3459 | 0 | *out++ = '1'; |
3460 | 0 | *out++ = '3'; |
3461 | 0 | *out++ = ';'; |
3462 | 0 | } else { |
3463 | 0 | *out++ = *in; |
3464 | 0 | } |
3465 | 0 | ++in; |
3466 | 0 | } |
3467 | 0 | *outlen = out - outstart; |
3468 | 0 | *inlen = in - base; |
3469 | 0 | return(0); |
3470 | 0 | } |
3471 | | |
3472 | | /** |
3473 | | * xmlOutputBufferWriteEscape: |
3474 | | * @out: a buffered parser output |
3475 | | * @str: a zero terminated UTF-8 string |
3476 | | * @escaping: an optional escaping function (or NULL) |
3477 | | * |
3478 | | * Write the content of the string in the output I/O buffer |
3479 | | * This routine escapes the characters and then handle the I18N |
3480 | | * transcoding from internal UTF-8 |
3481 | | * The buffer is lossless, i.e. will store in case of partial |
3482 | | * or delayed writes. |
3483 | | * |
3484 | | * Returns the number of chars immediately written, or -1 |
3485 | | * in case of error. |
3486 | | */ |
3487 | | int |
3488 | | xmlOutputBufferWriteEscape(xmlOutputBufferPtr out, const xmlChar *str, |
3489 | 0 | xmlCharEncodingOutputFunc escaping) { |
3490 | 0 | int nbchars = 0; /* number of chars to output to I/O */ |
3491 | 0 | int ret; /* return from function call */ |
3492 | 0 | int written = 0; /* number of char written to I/O so far */ |
3493 | 0 | int oldwritten=0;/* loop guard */ |
3494 | 0 | int chunk; /* number of byte currently processed from str */ |
3495 | 0 | int len; /* number of bytes in str */ |
3496 | 0 | int cons; /* byte from str consumed */ |
3497 | |
|
3498 | 0 | if ((out == NULL) || (out->error) || (str == NULL) || |
3499 | 0 | (out->buffer == NULL)) |
3500 | 0 | return(-1); |
3501 | 0 | len = strlen((const char *)str); |
3502 | 0 | if (len < 0) return(0); |
3503 | 0 | if (out->error) return(-1); |
3504 | 0 | if (escaping == NULL) escaping = xmlEscapeContent; |
3505 | |
|
3506 | 0 | do { |
3507 | 0 | oldwritten = written; |
3508 | | |
3509 | | /* |
3510 | | * how many bytes to consume and how many bytes to store. |
3511 | | */ |
3512 | 0 | cons = len; |
3513 | 0 | chunk = xmlBufAvail(out->buffer); |
3514 | | |
3515 | | /* |
3516 | | * make sure we have enough room to save first, if this is |
3517 | | * not the case force a flush, but make sure we stay in the loop |
3518 | | */ |
3519 | 0 | if (chunk < 40) { |
3520 | 0 | if (xmlBufGrow(out->buffer, 100) < 0) |
3521 | 0 | return(-1); |
3522 | 0 | oldwritten = -1; |
3523 | 0 | continue; |
3524 | 0 | } |
3525 | | |
3526 | | /* |
3527 | | * first handle encoding stuff. |
3528 | | */ |
3529 | 0 | if (out->encoder != NULL) { |
3530 | | /* |
3531 | | * Store the data in the incoming raw buffer |
3532 | | */ |
3533 | 0 | if (out->conv == NULL) { |
3534 | 0 | out->conv = xmlBufCreate(); |
3535 | 0 | } |
3536 | 0 | ret = escaping(xmlBufEnd(out->buffer) , |
3537 | 0 | &chunk, str, &cons); |
3538 | 0 | if ((ret < 0) || (chunk == 0)) /* chunk==0 => nothing done */ |
3539 | 0 | return(-1); |
3540 | 0 | xmlBufAddLen(out->buffer, chunk); |
3541 | |
|
3542 | 0 | if ((xmlBufUse(out->buffer) < MINLEN) && (cons == len)) |
3543 | 0 | goto done; |
3544 | | |
3545 | | /* |
3546 | | * convert as much as possible to the output buffer. |
3547 | | */ |
3548 | 0 | ret = xmlCharEncOutput(out, 0); |
3549 | 0 | if ((ret < 0) && (ret != -3)) { |
3550 | 0 | xmlIOErr(XML_IO_ENCODER, NULL); |
3551 | 0 | out->error = XML_IO_ENCODER; |
3552 | 0 | return(-1); |
3553 | 0 | } |
3554 | 0 | if (out->writecallback) |
3555 | 0 | nbchars = xmlBufUse(out->conv); |
3556 | 0 | else |
3557 | 0 | nbchars = ret >= 0 ? ret : 0; |
3558 | 0 | } else { |
3559 | 0 | ret = escaping(xmlBufEnd(out->buffer), &chunk, str, &cons); |
3560 | 0 | if ((ret < 0) || (chunk == 0)) /* chunk==0 => nothing done */ |
3561 | 0 | return(-1); |
3562 | 0 | xmlBufAddLen(out->buffer, chunk); |
3563 | 0 | if (out->writecallback) |
3564 | 0 | nbchars = xmlBufUse(out->buffer); |
3565 | 0 | else |
3566 | 0 | nbchars = chunk; |
3567 | 0 | } |
3568 | 0 | str += cons; |
3569 | 0 | len -= cons; |
3570 | |
|
3571 | 0 | if (out->writecallback) { |
3572 | 0 | if ((nbchars < MINLEN) && (len <= 0)) |
3573 | 0 | goto done; |
3574 | | |
3575 | | /* |
3576 | | * second write the stuff to the I/O channel |
3577 | | */ |
3578 | 0 | if (out->encoder != NULL) { |
3579 | 0 | ret = out->writecallback(out->context, |
3580 | 0 | (const char *)xmlBufContent(out->conv), nbchars); |
3581 | 0 | if (ret >= 0) |
3582 | 0 | xmlBufShrink(out->conv, ret); |
3583 | 0 | } else { |
3584 | 0 | ret = out->writecallback(out->context, |
3585 | 0 | (const char *)xmlBufContent(out->buffer), nbchars); |
3586 | 0 | if (ret >= 0) |
3587 | 0 | xmlBufShrink(out->buffer, ret); |
3588 | 0 | } |
3589 | 0 | if (ret < 0) { |
3590 | 0 | xmlIOErr(XML_IO_WRITE, NULL); |
3591 | 0 | out->error = XML_IO_WRITE; |
3592 | 0 | return(ret); |
3593 | 0 | } |
3594 | 0 | if (out->written > INT_MAX - ret) |
3595 | 0 | out->written = INT_MAX; |
3596 | 0 | else |
3597 | 0 | out->written += ret; |
3598 | 0 | } else if (xmlBufAvail(out->buffer) < MINLEN) { |
3599 | 0 | xmlBufGrow(out->buffer, MINLEN); |
3600 | 0 | } |
3601 | 0 | written += nbchars; |
3602 | 0 | } while ((len > 0) && (oldwritten != written)); |
3603 | | |
3604 | 0 | done: |
3605 | 0 | return(written); |
3606 | 0 | } |
3607 | | |
3608 | | /** |
3609 | | * xmlOutputBufferWriteString: |
3610 | | * @out: a buffered parser output |
3611 | | * @str: a zero terminated C string |
3612 | | * |
3613 | | * Write the content of the string in the output I/O buffer |
3614 | | * This routine handle the I18N transcoding from internal UTF-8 |
3615 | | * The buffer is lossless, i.e. will store in case of partial |
3616 | | * or delayed writes. |
3617 | | * |
3618 | | * Returns the number of chars immediately written, or -1 |
3619 | | * in case of error. |
3620 | | */ |
3621 | | int |
3622 | 0 | xmlOutputBufferWriteString(xmlOutputBufferPtr out, const char *str) { |
3623 | 0 | int len; |
3624 | |
|
3625 | 0 | if ((out == NULL) || (out->error)) return(-1); |
3626 | 0 | if (str == NULL) |
3627 | 0 | return(-1); |
3628 | 0 | len = strlen(str); |
3629 | |
|
3630 | 0 | if (len > 0) |
3631 | 0 | return(xmlOutputBufferWrite(out, len, str)); |
3632 | 0 | return(len); |
3633 | 0 | } |
3634 | | |
3635 | | /** |
3636 | | * xmlOutputBufferFlush: |
3637 | | * @out: a buffered output |
3638 | | * |
3639 | | * flushes the output I/O channel |
3640 | | * |
3641 | | * Returns the number of byte written or -1 in case of error. |
3642 | | */ |
3643 | | int |
3644 | 0 | xmlOutputBufferFlush(xmlOutputBufferPtr out) { |
3645 | 0 | int nbchars = 0, ret = 0; |
3646 | |
|
3647 | 0 | if ((out == NULL) || (out->error)) return(-1); |
3648 | | /* |
3649 | | * first handle encoding stuff. |
3650 | | */ |
3651 | 0 | if ((out->conv != NULL) && (out->encoder != NULL)) { |
3652 | | /* |
3653 | | * convert as much as possible to the parser output buffer. |
3654 | | */ |
3655 | 0 | do { |
3656 | 0 | nbchars = xmlCharEncOutput(out, 0); |
3657 | 0 | if (nbchars < 0) { |
3658 | 0 | xmlIOErr(XML_IO_ENCODER, NULL); |
3659 | 0 | out->error = XML_IO_ENCODER; |
3660 | 0 | return(-1); |
3661 | 0 | } |
3662 | 0 | } while (nbchars); |
3663 | 0 | } |
3664 | | |
3665 | | /* |
3666 | | * second flush the stuff to the I/O channel |
3667 | | */ |
3668 | 0 | if ((out->conv != NULL) && (out->encoder != NULL) && |
3669 | 0 | (out->writecallback != NULL)) { |
3670 | 0 | ret = out->writecallback(out->context, |
3671 | 0 | (const char *)xmlBufContent(out->conv), |
3672 | 0 | xmlBufUse(out->conv)); |
3673 | 0 | if (ret >= 0) |
3674 | 0 | xmlBufShrink(out->conv, ret); |
3675 | 0 | } else if (out->writecallback != NULL) { |
3676 | 0 | ret = out->writecallback(out->context, |
3677 | 0 | (const char *)xmlBufContent(out->buffer), |
3678 | 0 | xmlBufUse(out->buffer)); |
3679 | 0 | if (ret >= 0) |
3680 | 0 | xmlBufShrink(out->buffer, ret); |
3681 | 0 | } |
3682 | 0 | if (ret < 0) { |
3683 | 0 | xmlIOErr(XML_IO_FLUSH, NULL); |
3684 | 0 | out->error = XML_IO_FLUSH; |
3685 | 0 | return(ret); |
3686 | 0 | } |
3687 | 0 | if (out->written > INT_MAX - ret) |
3688 | 0 | out->written = INT_MAX; |
3689 | 0 | else |
3690 | 0 | out->written += ret; |
3691 | |
|
3692 | 0 | return(ret); |
3693 | 0 | } |
3694 | | #endif /* LIBXML_OUTPUT_ENABLED */ |
3695 | | |
3696 | | /** |
3697 | | * xmlParserGetDirectory: |
3698 | | * @filename: the path to a file |
3699 | | * |
3700 | | * lookup the directory for that file |
3701 | | * |
3702 | | * Returns a new allocated string containing the directory, or NULL. |
3703 | | */ |
3704 | | char * |
3705 | 0 | xmlParserGetDirectory(const char *filename) { |
3706 | 0 | char *ret = NULL; |
3707 | 0 | char dir[1024]; |
3708 | 0 | char *cur; |
3709 | |
|
3710 | 0 | if (xmlInputCallbackInitialized == 0) |
3711 | 0 | xmlRegisterDefaultInputCallbacks(); |
3712 | |
|
3713 | 0 | if (filename == NULL) return(NULL); |
3714 | | |
3715 | | #if defined(_WIN32) |
3716 | | # define IS_XMLPGD_SEP(ch) ((ch=='/')||(ch=='\\')) |
3717 | | #else |
3718 | 0 | # define IS_XMLPGD_SEP(ch) (ch=='/') |
3719 | 0 | #endif |
3720 | | |
3721 | 0 | strncpy(dir, filename, 1023); |
3722 | 0 | dir[1023] = 0; |
3723 | 0 | cur = &dir[strlen(dir)]; |
3724 | 0 | while (cur > dir) { |
3725 | 0 | if (IS_XMLPGD_SEP(*cur)) break; |
3726 | 0 | cur --; |
3727 | 0 | } |
3728 | 0 | if (IS_XMLPGD_SEP(*cur)) { |
3729 | 0 | if (cur == dir) dir[1] = 0; |
3730 | 0 | else *cur = 0; |
3731 | 0 | ret = xmlMemStrdup(dir); |
3732 | 0 | } else { |
3733 | 0 | if (getcwd(dir, 1024) != NULL) { |
3734 | 0 | dir[1023] = 0; |
3735 | 0 | ret = xmlMemStrdup(dir); |
3736 | 0 | } |
3737 | 0 | } |
3738 | 0 | return(ret); |
3739 | 0 | #undef IS_XMLPGD_SEP |
3740 | 0 | } |
3741 | | |
3742 | | /**************************************************************** |
3743 | | * * |
3744 | | * External entities loading * |
3745 | | * * |
3746 | | ****************************************************************/ |
3747 | | |
3748 | | /** |
3749 | | * xmlCheckHTTPInput: |
3750 | | * @ctxt: an XML parser context |
3751 | | * @ret: an XML parser input |
3752 | | * |
3753 | | * Check an input in case it was created from an HTTP stream, in that |
3754 | | * case it will handle encoding and update of the base URL in case of |
3755 | | * redirection. It also checks for HTTP errors in which case the input |
3756 | | * is cleanly freed up and an appropriate error is raised in context |
3757 | | * |
3758 | | * Returns the input or NULL in case of HTTP error. |
3759 | | */ |
3760 | | xmlParserInputPtr |
3761 | 0 | xmlCheckHTTPInput(xmlParserCtxtPtr ctxt, xmlParserInputPtr ret) { |
3762 | | /* Avoid unused variable warning if features are disabled. */ |
3763 | 0 | (void) ctxt; |
3764 | |
|
3765 | 0 | #ifdef LIBXML_HTTP_ENABLED |
3766 | 0 | if ((ret != NULL) && (ret->buf != NULL) && |
3767 | 0 | (ret->buf->readcallback == xmlIOHTTPRead) && |
3768 | 0 | (ret->buf->context != NULL)) { |
3769 | 0 | const char *encoding; |
3770 | 0 | const char *redir; |
3771 | 0 | const char *mime; |
3772 | 0 | int code; |
3773 | |
|
3774 | 0 | code = xmlNanoHTTPReturnCode(ret->buf->context); |
3775 | 0 | if (code >= 400) { |
3776 | | /* fatal error */ |
3777 | 0 | if (ret->filename != NULL) |
3778 | 0 | __xmlLoaderErr(ctxt, "failed to load HTTP resource \"%s\"\n", |
3779 | 0 | (const char *) ret->filename); |
3780 | 0 | else |
3781 | 0 | __xmlLoaderErr(ctxt, "failed to load HTTP resource\n", NULL); |
3782 | 0 | xmlFreeInputStream(ret); |
3783 | 0 | ret = NULL; |
3784 | 0 | } else { |
3785 | |
|
3786 | 0 | mime = xmlNanoHTTPMimeType(ret->buf->context); |
3787 | 0 | if ((xmlStrstr(BAD_CAST mime, BAD_CAST "/xml")) || |
3788 | 0 | (xmlStrstr(BAD_CAST mime, BAD_CAST "+xml"))) { |
3789 | 0 | encoding = xmlNanoHTTPEncoding(ret->buf->context); |
3790 | 0 | if (encoding != NULL) { |
3791 | 0 | xmlCharEncodingHandlerPtr handler; |
3792 | |
|
3793 | 0 | handler = xmlFindCharEncodingHandler(encoding); |
3794 | 0 | if (handler != NULL) { |
3795 | 0 | xmlSwitchInputEncoding(ctxt, ret, handler); |
3796 | 0 | } else { |
3797 | 0 | __xmlErrEncoding(ctxt, XML_ERR_UNKNOWN_ENCODING, |
3798 | 0 | "Unknown encoding %s", |
3799 | 0 | BAD_CAST encoding, NULL); |
3800 | 0 | } |
3801 | 0 | } |
3802 | | #if 0 |
3803 | | } else if (xmlStrstr(BAD_CAST mime, BAD_CAST "html")) { |
3804 | | #endif |
3805 | 0 | } |
3806 | 0 | redir = xmlNanoHTTPRedir(ret->buf->context); |
3807 | 0 | if (redir != NULL) { |
3808 | 0 | if (ret->filename != NULL) |
3809 | 0 | xmlFree((xmlChar *) ret->filename); |
3810 | 0 | if (ret->directory != NULL) { |
3811 | 0 | xmlFree((xmlChar *) ret->directory); |
3812 | 0 | ret->directory = NULL; |
3813 | 0 | } |
3814 | 0 | ret->filename = |
3815 | 0 | (char *) xmlStrdup((const xmlChar *) redir); |
3816 | 0 | } |
3817 | 0 | } |
3818 | 0 | } |
3819 | 0 | #endif |
3820 | 0 | return(ret); |
3821 | 0 | } |
3822 | | |
3823 | 0 | static int xmlNoNetExists(const char *URL) { |
3824 | 0 | const char *path; |
3825 | |
|
3826 | 0 | if (URL == NULL) |
3827 | 0 | return(0); |
3828 | | |
3829 | 0 | if (!xmlStrncasecmp(BAD_CAST URL, BAD_CAST "file://localhost/", 17)) |
3830 | | #if defined (_WIN32) |
3831 | | path = &URL[17]; |
3832 | | #else |
3833 | 0 | path = &URL[16]; |
3834 | 0 | #endif |
3835 | 0 | else if (!xmlStrncasecmp(BAD_CAST URL, BAD_CAST "file:///", 8)) { |
3836 | | #if defined (_WIN32) |
3837 | | path = &URL[8]; |
3838 | | #else |
3839 | 0 | path = &URL[7]; |
3840 | 0 | #endif |
3841 | 0 | } else |
3842 | 0 | path = URL; |
3843 | |
|
3844 | 0 | return xmlCheckFilename(path); |
3845 | 0 | } |
3846 | | |
3847 | | #ifdef LIBXML_CATALOG_ENABLED |
3848 | | |
3849 | | /** |
3850 | | * xmlResolveResourceFromCatalog: |
3851 | | * @URL: the URL for the entity to load |
3852 | | * @ID: the System ID for the entity to load |
3853 | | * @ctxt: the context in which the entity is called or NULL |
3854 | | * |
3855 | | * Resolves the URL and ID against the appropriate catalog. |
3856 | | * This function is used by xmlDefaultExternalEntityLoader and |
3857 | | * xmlNoNetExternalEntityLoader. |
3858 | | * |
3859 | | * Returns a new allocated URL, or NULL. |
3860 | | */ |
3861 | | static xmlChar * |
3862 | | xmlResolveResourceFromCatalog(const char *URL, const char *ID, |
3863 | 0 | xmlParserCtxtPtr ctxt) { |
3864 | 0 | xmlChar *resource = NULL; |
3865 | 0 | xmlCatalogAllow pref; |
3866 | | |
3867 | | /* |
3868 | | * If the resource doesn't exists as a file, |
3869 | | * try to load it from the resource pointed in the catalogs |
3870 | | */ |
3871 | 0 | pref = xmlCatalogGetDefaults(); |
3872 | |
|
3873 | 0 | if ((pref != XML_CATA_ALLOW_NONE) && (!xmlNoNetExists(URL))) { |
3874 | | /* |
3875 | | * Do a local lookup |
3876 | | */ |
3877 | 0 | if ((ctxt != NULL) && (ctxt->catalogs != NULL) && |
3878 | 0 | ((pref == XML_CATA_ALLOW_ALL) || |
3879 | 0 | (pref == XML_CATA_ALLOW_DOCUMENT))) { |
3880 | 0 | resource = xmlCatalogLocalResolve(ctxt->catalogs, |
3881 | 0 | (const xmlChar *)ID, |
3882 | 0 | (const xmlChar *)URL); |
3883 | 0 | } |
3884 | | /* |
3885 | | * Try a global lookup |
3886 | | */ |
3887 | 0 | if ((resource == NULL) && |
3888 | 0 | ((pref == XML_CATA_ALLOW_ALL) || |
3889 | 0 | (pref == XML_CATA_ALLOW_GLOBAL))) { |
3890 | 0 | resource = xmlCatalogResolve((const xmlChar *)ID, |
3891 | 0 | (const xmlChar *)URL); |
3892 | 0 | } |
3893 | 0 | if ((resource == NULL) && (URL != NULL)) |
3894 | 0 | resource = xmlStrdup((const xmlChar *) URL); |
3895 | | |
3896 | | /* |
3897 | | * TODO: do an URI lookup on the reference |
3898 | | */ |
3899 | 0 | if ((resource != NULL) && (!xmlNoNetExists((const char *)resource))) { |
3900 | 0 | xmlChar *tmp = NULL; |
3901 | |
|
3902 | 0 | if ((ctxt != NULL) && (ctxt->catalogs != NULL) && |
3903 | 0 | ((pref == XML_CATA_ALLOW_ALL) || |
3904 | 0 | (pref == XML_CATA_ALLOW_DOCUMENT))) { |
3905 | 0 | tmp = xmlCatalogLocalResolveURI(ctxt->catalogs, resource); |
3906 | 0 | } |
3907 | 0 | if ((tmp == NULL) && |
3908 | 0 | ((pref == XML_CATA_ALLOW_ALL) || |
3909 | 0 | (pref == XML_CATA_ALLOW_GLOBAL))) { |
3910 | 0 | tmp = xmlCatalogResolveURI(resource); |
3911 | 0 | } |
3912 | |
|
3913 | 0 | if (tmp != NULL) { |
3914 | 0 | xmlFree(resource); |
3915 | 0 | resource = tmp; |
3916 | 0 | } |
3917 | 0 | } |
3918 | 0 | } |
3919 | |
|
3920 | 0 | return resource; |
3921 | 0 | } |
3922 | | |
3923 | | #endif |
3924 | | |
3925 | | /** |
3926 | | * xmlDefaultExternalEntityLoader: |
3927 | | * @URL: the URL for the entity to load |
3928 | | * @ID: the System ID for the entity to load |
3929 | | * @ctxt: the context in which the entity is called or NULL |
3930 | | * |
3931 | | * By default we don't load external entities, yet. |
3932 | | * |
3933 | | * Returns a new allocated xmlParserInputPtr, or NULL. |
3934 | | */ |
3935 | | static xmlParserInputPtr |
3936 | | xmlDefaultExternalEntityLoader(const char *URL, const char *ID, |
3937 | | xmlParserCtxtPtr ctxt) |
3938 | 0 | { |
3939 | 0 | xmlParserInputPtr ret = NULL; |
3940 | 0 | xmlChar *resource = NULL; |
3941 | |
|
3942 | 0 | if ((ctxt != NULL) && (ctxt->options & XML_PARSE_NONET)) { |
3943 | 0 | int options = ctxt->options; |
3944 | |
|
3945 | 0 | ctxt->options -= XML_PARSE_NONET; |
3946 | 0 | ret = xmlNoNetExternalEntityLoader(URL, ID, ctxt); |
3947 | 0 | ctxt->options = options; |
3948 | 0 | return(ret); |
3949 | 0 | } |
3950 | 0 | #ifdef LIBXML_CATALOG_ENABLED |
3951 | 0 | resource = xmlResolveResourceFromCatalog(URL, ID, ctxt); |
3952 | 0 | #endif |
3953 | |
|
3954 | 0 | if (resource == NULL) |
3955 | 0 | resource = (xmlChar *) URL; |
3956 | |
|
3957 | 0 | if (resource == NULL) { |
3958 | 0 | if (ID == NULL) |
3959 | 0 | ID = "NULL"; |
3960 | 0 | __xmlLoaderErr(ctxt, "failed to load external entity \"%s\"\n", ID); |
3961 | 0 | return (NULL); |
3962 | 0 | } |
3963 | 0 | ret = xmlNewInputFromFile(ctxt, (const char *) resource); |
3964 | 0 | if ((resource != NULL) && (resource != (xmlChar *) URL)) |
3965 | 0 | xmlFree(resource); |
3966 | 0 | return (ret); |
3967 | 0 | } |
3968 | | |
3969 | | static xmlExternalEntityLoader xmlCurrentExternalEntityLoader = |
3970 | | xmlDefaultExternalEntityLoader; |
3971 | | |
3972 | | /** |
3973 | | * xmlSetExternalEntityLoader: |
3974 | | * @f: the new entity resolver function |
3975 | | * |
3976 | | * Changes the defaultexternal entity resolver function for the application |
3977 | | */ |
3978 | | void |
3979 | 0 | xmlSetExternalEntityLoader(xmlExternalEntityLoader f) { |
3980 | 0 | xmlCurrentExternalEntityLoader = f; |
3981 | 0 | } |
3982 | | |
3983 | | /** |
3984 | | * xmlGetExternalEntityLoader: |
3985 | | * |
3986 | | * Get the default external entity resolver function for the application |
3987 | | * |
3988 | | * Returns the xmlExternalEntityLoader function pointer |
3989 | | */ |
3990 | | xmlExternalEntityLoader |
3991 | 0 | xmlGetExternalEntityLoader(void) { |
3992 | 0 | return(xmlCurrentExternalEntityLoader); |
3993 | 0 | } |
3994 | | |
3995 | | /** |
3996 | | * xmlLoadExternalEntity: |
3997 | | * @URL: the URL for the entity to load |
3998 | | * @ID: the Public ID for the entity to load |
3999 | | * @ctxt: the context in which the entity is called or NULL |
4000 | | * |
4001 | | * Load an external entity, note that the use of this function for |
4002 | | * unparsed entities may generate problems |
4003 | | * |
4004 | | * Returns the xmlParserInputPtr or NULL |
4005 | | */ |
4006 | | xmlParserInputPtr |
4007 | | xmlLoadExternalEntity(const char *URL, const char *ID, |
4008 | 0 | xmlParserCtxtPtr ctxt) { |
4009 | 0 | if ((URL != NULL) && (xmlNoNetExists(URL) == 0)) { |
4010 | 0 | char *canonicFilename; |
4011 | 0 | xmlParserInputPtr ret; |
4012 | |
|
4013 | 0 | canonicFilename = (char *) xmlCanonicPath((const xmlChar *) URL); |
4014 | 0 | if (canonicFilename == NULL) { |
4015 | 0 | xmlErrMemory(ctxt, "building canonical path\n"); |
4016 | 0 | return(NULL); |
4017 | 0 | } |
4018 | | |
4019 | 0 | ret = xmlCurrentExternalEntityLoader(canonicFilename, ID, ctxt); |
4020 | 0 | xmlFree(canonicFilename); |
4021 | 0 | return(ret); |
4022 | 0 | } |
4023 | 0 | return(xmlCurrentExternalEntityLoader(URL, ID, ctxt)); |
4024 | 0 | } |
4025 | | |
4026 | | /************************************************************************ |
4027 | | * * |
4028 | | * Disabling Network access * |
4029 | | * * |
4030 | | ************************************************************************/ |
4031 | | |
4032 | | /** |
4033 | | * xmlNoNetExternalEntityLoader: |
4034 | | * @URL: the URL for the entity to load |
4035 | | * @ID: the System ID for the entity to load |
4036 | | * @ctxt: the context in which the entity is called or NULL |
4037 | | * |
4038 | | * A specific entity loader disabling network accesses, though still |
4039 | | * allowing local catalog accesses for resolution. |
4040 | | * |
4041 | | * Returns a new allocated xmlParserInputPtr, or NULL. |
4042 | | */ |
4043 | | xmlParserInputPtr |
4044 | | xmlNoNetExternalEntityLoader(const char *URL, const char *ID, |
4045 | 0 | xmlParserCtxtPtr ctxt) { |
4046 | 0 | xmlParserInputPtr input = NULL; |
4047 | 0 | xmlChar *resource = NULL; |
4048 | |
|
4049 | 0 | #ifdef LIBXML_CATALOG_ENABLED |
4050 | 0 | resource = xmlResolveResourceFromCatalog(URL, ID, ctxt); |
4051 | 0 | #endif |
4052 | |
|
4053 | 0 | if (resource == NULL) |
4054 | 0 | resource = (xmlChar *) URL; |
4055 | |
|
4056 | 0 | if (resource != NULL) { |
4057 | 0 | if ((!xmlStrncasecmp(BAD_CAST resource, BAD_CAST "ftp://", 6)) || |
4058 | 0 | (!xmlStrncasecmp(BAD_CAST resource, BAD_CAST "http://", 7))) { |
4059 | 0 | xmlIOErr(XML_IO_NETWORK_ATTEMPT, (const char *) resource); |
4060 | 0 | if (resource != (xmlChar *) URL) |
4061 | 0 | xmlFree(resource); |
4062 | 0 | return(NULL); |
4063 | 0 | } |
4064 | 0 | } |
4065 | 0 | input = xmlDefaultExternalEntityLoader((const char *) resource, ID, ctxt); |
4066 | 0 | if (resource != (xmlChar *) URL) |
4067 | 0 | xmlFree(resource); |
4068 | 0 | return(input); |
4069 | 0 | } |
4070 | | |