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 | #include "libxml.h" |
---|
12 | |
---|
13 | #include <string.h> |
---|
14 | #include <errno.h> |
---|
15 | |
---|
16 | #ifdef HAVE_SYS_TYPES_H |
---|
17 | #include <sys/types.h> |
---|
18 | #endif |
---|
19 | #ifdef HAVE_SYS_STAT_H |
---|
20 | #include <sys/stat.h> |
---|
21 | #endif |
---|
22 | #ifdef HAVE_FCNTL_H |
---|
23 | #include <fcntl.h> |
---|
24 | #endif |
---|
25 | #ifdef HAVE_UNISTD_H |
---|
26 | #include <unistd.h> |
---|
27 | #endif |
---|
28 | #ifdef HAVE_STDLIB_H |
---|
29 | #include <stdlib.h> |
---|
30 | #endif |
---|
31 | #ifdef HAVE_ZLIB_H |
---|
32 | #include <zlib.h> |
---|
33 | #endif |
---|
34 | |
---|
35 | /* Figure a portable way to know if a file is a directory. */ |
---|
36 | #ifndef HAVE_STAT |
---|
37 | # ifdef HAVE__STAT |
---|
38 | /* MS C library seems to define stat and _stat. The definition |
---|
39 | is identical. Still, mapping them to each other causes a warning. */ |
---|
40 | # ifndef _MSC_VER |
---|
41 | # define stat(x,y) _stat(x,y) |
---|
42 | # endif |
---|
43 | # define HAVE_STAT |
---|
44 | # endif |
---|
45 | #endif |
---|
46 | #ifdef HAVE_STAT |
---|
47 | # ifndef S_ISDIR |
---|
48 | # ifdef _S_ISDIR |
---|
49 | # define S_ISDIR(x) _S_ISDIR(x) |
---|
50 | # else |
---|
51 | # ifdef S_IFDIR |
---|
52 | # ifndef S_IFMT |
---|
53 | # ifdef _S_IFMT |
---|
54 | # define S_IFMT _S_IFMT |
---|
55 | # endif |
---|
56 | # endif |
---|
57 | # ifdef S_IFMT |
---|
58 | # define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR) |
---|
59 | # endif |
---|
60 | # endif |
---|
61 | # endif |
---|
62 | # endif |
---|
63 | #endif |
---|
64 | |
---|
65 | #include <libxml/xmlmemory.h> |
---|
66 | #include <libxml/parser.h> |
---|
67 | #include <libxml/parserInternals.h> |
---|
68 | #include <libxml/xmlIO.h> |
---|
69 | #include <libxml/uri.h> |
---|
70 | #include <libxml/nanohttp.h> |
---|
71 | #include <libxml/nanoftp.h> |
---|
72 | #include <libxml/xmlerror.h> |
---|
73 | #ifdef LIBXML_CATALOG_ENABLED |
---|
74 | #include <libxml/catalog.h> |
---|
75 | #endif |
---|
76 | #include <libxml/globals.h> |
---|
77 | |
---|
78 | #ifdef VMS |
---|
79 | #define xmlRegisterDefaultInputCallbacks xmlRegisterDefInputCallbacks |
---|
80 | #define xmlRegisterDefaultOutputCallbacks xmlRegisterDefOutputCallbacks |
---|
81 | #endif |
---|
82 | |
---|
83 | /* #define VERBOSE_FAILURE */ |
---|
84 | /* #define DEBUG_EXTERNAL_ENTITIES */ |
---|
85 | /* #define DEBUG_INPUT */ |
---|
86 | |
---|
87 | #ifdef DEBUG_INPUT |
---|
88 | #define MINLEN 40 |
---|
89 | #else |
---|
90 | #define MINLEN 4000 |
---|
91 | #endif |
---|
92 | |
---|
93 | /* |
---|
94 | * Input I/O callback sets |
---|
95 | */ |
---|
96 | typedef struct _xmlInputCallback { |
---|
97 | xmlInputMatchCallback matchcallback; |
---|
98 | xmlInputOpenCallback opencallback; |
---|
99 | xmlInputReadCallback readcallback; |
---|
100 | xmlInputCloseCallback closecallback; |
---|
101 | } xmlInputCallback; |
---|
102 | |
---|
103 | #define MAX_INPUT_CALLBACK 15 |
---|
104 | |
---|
105 | static xmlInputCallback xmlInputCallbackTable[MAX_INPUT_CALLBACK]; |
---|
106 | static int xmlInputCallbackNr = 0; |
---|
107 | static int xmlInputCallbackInitialized = 0; |
---|
108 | |
---|
109 | /* |
---|
110 | * Output I/O callback sets |
---|
111 | */ |
---|
112 | typedef struct _xmlOutputCallback { |
---|
113 | xmlOutputMatchCallback matchcallback; |
---|
114 | xmlOutputOpenCallback opencallback; |
---|
115 | xmlOutputWriteCallback writecallback; |
---|
116 | xmlOutputCloseCallback closecallback; |
---|
117 | } xmlOutputCallback; |
---|
118 | |
---|
119 | #define MAX_OUTPUT_CALLBACK 15 |
---|
120 | |
---|
121 | static xmlOutputCallback xmlOutputCallbackTable[MAX_OUTPUT_CALLBACK]; |
---|
122 | static int xmlOutputCallbackNr = 0; |
---|
123 | static int xmlOutputCallbackInitialized = 0; |
---|
124 | |
---|
125 | /** |
---|
126 | * xmlCleanupInputCallbacks: |
---|
127 | * |
---|
128 | * clears the entire input callback table. this includes the |
---|
129 | * compiled-in I/O. |
---|
130 | */ |
---|
131 | void |
---|
132 | xmlCleanupInputCallbacks(void) |
---|
133 | { |
---|
134 | int i; |
---|
135 | |
---|
136 | if (!xmlInputCallbackInitialized) |
---|
137 | return; |
---|
138 | |
---|
139 | for (i = xmlInputCallbackNr - 1; i >= 0; i--) { |
---|
140 | xmlInputCallbackTable[i].matchcallback = NULL; |
---|
141 | xmlInputCallbackTable[i].opencallback = NULL; |
---|
142 | xmlInputCallbackTable[i].readcallback = NULL; |
---|
143 | xmlInputCallbackTable[i].closecallback = NULL; |
---|
144 | } |
---|
145 | |
---|
146 | xmlInputCallbackNr = 0; |
---|
147 | } |
---|
148 | |
---|
149 | /** |
---|
150 | * xmlCleanupOutputCallbacks: |
---|
151 | * |
---|
152 | * clears the entire output callback table. this includes the |
---|
153 | * compiled-in I/O callbacks. |
---|
154 | */ |
---|
155 | void |
---|
156 | xmlCleanupOutputCallbacks(void) |
---|
157 | { |
---|
158 | int i; |
---|
159 | |
---|
160 | if (!xmlOutputCallbackInitialized) |
---|
161 | return; |
---|
162 | |
---|
163 | for (i = xmlOutputCallbackNr - 1; i >= 0; i--) { |
---|
164 | xmlOutputCallbackTable[i].matchcallback = NULL; |
---|
165 | xmlOutputCallbackTable[i].opencallback = NULL; |
---|
166 | xmlOutputCallbackTable[i].writecallback = NULL; |
---|
167 | xmlOutputCallbackTable[i].closecallback = NULL; |
---|
168 | } |
---|
169 | |
---|
170 | xmlOutputCallbackNr = 0; |
---|
171 | } |
---|
172 | |
---|
173 | /************************************************************************ |
---|
174 | * * |
---|
175 | * Standard I/O for file accesses * |
---|
176 | * * |
---|
177 | ************************************************************************/ |
---|
178 | |
---|
179 | /** |
---|
180 | * xmlCheckFilename |
---|
181 | * @path: the path to check |
---|
182 | * |
---|
183 | * function checks to see if @path is a valid source |
---|
184 | * (file, socket...) for XML. |
---|
185 | * |
---|
186 | * if stat is not available on the target machine, |
---|
187 | * returns 1. if stat fails, returns 0 (if calling |
---|
188 | * stat on the filename fails, it can't be right). |
---|
189 | * if stat succeeds and the file is a directory, |
---|
190 | * sets errno to EISDIR and returns 0. otherwise |
---|
191 | * returns 1. |
---|
192 | */ |
---|
193 | |
---|
194 | static int |
---|
195 | xmlCheckFilename (const char *path) |
---|
196 | { |
---|
197 | #ifdef HAVE_STAT |
---|
198 | #ifdef S_ISDIR |
---|
199 | struct stat stat_buffer; |
---|
200 | |
---|
201 | if (stat(path, &stat_buffer) == -1) |
---|
202 | return 0; |
---|
203 | |
---|
204 | if (S_ISDIR(stat_buffer.st_mode)) { |
---|
205 | errno = EISDIR; |
---|
206 | return 0; |
---|
207 | } |
---|
208 | |
---|
209 | #endif |
---|
210 | #endif |
---|
211 | return 1; |
---|
212 | } |
---|
213 | |
---|
214 | static int |
---|
215 | xmlNop(void) { |
---|
216 | return(0); |
---|
217 | } |
---|
218 | |
---|
219 | /** |
---|
220 | * xmlFdRead: |
---|
221 | * @context: the I/O context |
---|
222 | * @buffer: where to drop data |
---|
223 | * @len: number of bytes to read |
---|
224 | * |
---|
225 | * Read @len bytes to @buffer from the I/O channel. |
---|
226 | * |
---|
227 | * Returns the number of bytes written |
---|
228 | */ |
---|
229 | static int |
---|
230 | xmlFdRead (void * context, char * buffer, int len) { |
---|
231 | return(read((int) (long) context, &buffer[0], len)); |
---|
232 | } |
---|
233 | |
---|
234 | /** |
---|
235 | * xmlFdWrite: |
---|
236 | * @context: the I/O context |
---|
237 | * @buffer: where to get data |
---|
238 | * @len: number of bytes to write |
---|
239 | * |
---|
240 | * Write @len bytes from @buffer to the I/O channel. |
---|
241 | * |
---|
242 | * Returns the number of bytes written |
---|
243 | */ |
---|
244 | static int |
---|
245 | xmlFdWrite (void * context, const char * buffer, int len) { |
---|
246 | return(write((int) (long) context, &buffer[0], len)); |
---|
247 | } |
---|
248 | |
---|
249 | /** |
---|
250 | * xmlFdClose: |
---|
251 | * @context: the I/O context |
---|
252 | * |
---|
253 | * Close an I/O channel |
---|
254 | * |
---|
255 | * Returns 0 in case of success and error code otherwise |
---|
256 | */ |
---|
257 | static int |
---|
258 | xmlFdClose (void * context) { |
---|
259 | return ( close((int) (long) context) ); |
---|
260 | } |
---|
261 | |
---|
262 | /** |
---|
263 | * xmlFileMatch: |
---|
264 | * @filename: the URI for matching |
---|
265 | * |
---|
266 | * input from FILE * |
---|
267 | * |
---|
268 | * Returns 1 if matches, 0 otherwise |
---|
269 | */ |
---|
270 | static int |
---|
271 | xmlFileMatch (const char *filename ATTRIBUTE_UNUSED) { |
---|
272 | return(1); |
---|
273 | } |
---|
274 | |
---|
275 | /** |
---|
276 | * xmlFileOpen: |
---|
277 | * @filename: the URI for matching |
---|
278 | * |
---|
279 | * input from FILE *, supports compressed input |
---|
280 | * if @filename is " " then the standard input is used |
---|
281 | * |
---|
282 | * Returns an I/O context or NULL in case of error |
---|
283 | */ |
---|
284 | static void * |
---|
285 | xmlFileOpen (const char *filename) { |
---|
286 | const char *path = NULL; |
---|
287 | FILE *fd; |
---|
288 | |
---|
289 | if (!strcmp(filename, "-")) { |
---|
290 | fd = stdin; |
---|
291 | return((void *) fd); |
---|
292 | } |
---|
293 | |
---|
294 | if (!strncmp(filename, "file://localhost", 16)) |
---|
295 | path = &filename[16]; |
---|
296 | else if (!strncmp(filename, "file:///", 8)) { |
---|
297 | #if defined (_WIN32) && !defined(__CYGWIN__) |
---|
298 | path = &filename[8]; |
---|
299 | #else |
---|
300 | path = &filename[7]; |
---|
301 | #endif |
---|
302 | } else |
---|
303 | path = filename; |
---|
304 | |
---|
305 | if (path == NULL) |
---|
306 | return(NULL); |
---|
307 | if (!xmlCheckFilename(path)) |
---|
308 | return(NULL); |
---|
309 | |
---|
310 | #if defined(WIN32) || defined (__CYGWIN__) |
---|
311 | fd = fopen(path, "rb"); |
---|
312 | #else |
---|
313 | fd = fopen(path, "r"); |
---|
314 | #endif /* WIN32 */ |
---|
315 | return((void *) fd); |
---|
316 | } |
---|
317 | |
---|
318 | /** |
---|
319 | * xmlFileOpenW: |
---|
320 | * @filename: the URI for matching |
---|
321 | * |
---|
322 | * output to from FILE *, |
---|
323 | * if @filename is "-" then the standard output is used |
---|
324 | * |
---|
325 | * Returns an I/O context or NULL in case of error |
---|
326 | */ |
---|
327 | static void * |
---|
328 | xmlFileOpenW (const char *filename) { |
---|
329 | const char *path = NULL; |
---|
330 | FILE *fd; |
---|
331 | |
---|
332 | if (!strcmp(filename, "-")) { |
---|
333 | fd = stdout; |
---|
334 | return((void *) fd); |
---|
335 | } |
---|
336 | |
---|
337 | if (!strncmp(filename, "file://localhost", 16)) |
---|
338 | path = &filename[16]; |
---|
339 | else if (!strncmp(filename, "file:///", 8)) { |
---|
340 | #if defined (_WIN32) && !defined(__CYGWIN__) |
---|
341 | path = &filename[8]; |
---|
342 | #else |
---|
343 | path = &filename[7]; |
---|
344 | #endif |
---|
345 | } else |
---|
346 | path = filename; |
---|
347 | |
---|
348 | if (path == NULL) |
---|
349 | return(NULL); |
---|
350 | |
---|
351 | fd = fopen(path, "w"); |
---|
352 | return((void *) fd); |
---|
353 | } |
---|
354 | |
---|
355 | /** |
---|
356 | * xmlFileRead: |
---|
357 | * @context: the I/O context |
---|
358 | * @buffer: where to drop data |
---|
359 | * @len: number of bytes to write |
---|
360 | * |
---|
361 | * Read @len bytes to @buffer from the I/O channel. |
---|
362 | * |
---|
363 | * Returns the number of bytes written |
---|
364 | */ |
---|
365 | static int |
---|
366 | xmlFileRead (void * context, char * buffer, int len) { |
---|
367 | return(fread(&buffer[0], 1, len, (FILE *) context)); |
---|
368 | } |
---|
369 | |
---|
370 | /** |
---|
371 | * xmlFileWrite: |
---|
372 | * @context: the I/O context |
---|
373 | * @buffer: where to drop data |
---|
374 | * @len: number of bytes to write |
---|
375 | * |
---|
376 | * Write @len bytes from @buffer to the I/O channel. |
---|
377 | * |
---|
378 | * Returns the number of bytes written |
---|
379 | */ |
---|
380 | static int |
---|
381 | xmlFileWrite (void * context, const char * buffer, int len) { |
---|
382 | return(fwrite(&buffer[0], 1, len, (FILE *) context)); |
---|
383 | } |
---|
384 | |
---|
385 | /** |
---|
386 | * xmlFileClose: |
---|
387 | * @context: the I/O context |
---|
388 | * |
---|
389 | * Close an I/O channel |
---|
390 | */ |
---|
391 | static int |
---|
392 | xmlFileClose (void * context) { |
---|
393 | FILE *fil; |
---|
394 | |
---|
395 | fil = (FILE *) context; |
---|
396 | if (fil == stdin) |
---|
397 | return(0); |
---|
398 | if (fil == stdout) |
---|
399 | return(0); |
---|
400 | if (fil == stderr) |
---|
401 | return(0); |
---|
402 | return ( ( fclose((FILE *) context) == EOF ) ? -1 : 0 ); |
---|
403 | } |
---|
404 | |
---|
405 | /** |
---|
406 | * xmlFileFlush: |
---|
407 | * @context: the I/O context |
---|
408 | * |
---|
409 | * Flush an I/O channel |
---|
410 | */ |
---|
411 | static int |
---|
412 | xmlFileFlush (void * context) { |
---|
413 | return ( ( fflush((FILE *) context) == EOF ) ? -1 : 0 ); |
---|
414 | } |
---|
415 | |
---|
416 | #ifdef HAVE_ZLIB_H |
---|
417 | /************************************************************************ |
---|
418 | * * |
---|
419 | * I/O for compressed file accesses * |
---|
420 | * * |
---|
421 | ************************************************************************/ |
---|
422 | /** |
---|
423 | * xmlGzfileMatch: |
---|
424 | * @filename: the URI for matching |
---|
425 | * |
---|
426 | * input from compressed file test |
---|
427 | * |
---|
428 | * Returns 1 if matches, 0 otherwise |
---|
429 | */ |
---|
430 | static int |
---|
431 | xmlGzfileMatch (const char *filename ATTRIBUTE_UNUSED) { |
---|
432 | return(1); |
---|
433 | } |
---|
434 | |
---|
435 | /** |
---|
436 | * xmlGzfileOpen: |
---|
437 | * @filename: the URI for matching |
---|
438 | * |
---|
439 | * input from compressed file open |
---|
440 | * if @filename is " " then the standard input is used |
---|
441 | * |
---|
442 | * Returns an I/O context or NULL in case of error |
---|
443 | */ |
---|
444 | static void * |
---|
445 | xmlGzfileOpen (const char *filename) { |
---|
446 | const char *path = NULL; |
---|
447 | gzFile fd; |
---|
448 | |
---|
449 | if (!strcmp(filename, "-")) { |
---|
450 | fd = gzdopen(dup(0), "rb"); |
---|
451 | return((void *) fd); |
---|
452 | } |
---|
453 | |
---|
454 | if (!strncmp(filename, "file://localhost", 16)) |
---|
455 | path = &filename[16]; |
---|
456 | else if (!strncmp(filename, "file:///", 8)) { |
---|
457 | #if defined (_WIN32) && !defined(__CYGWIN__) |
---|
458 | path = &filename[8]; |
---|
459 | #else |
---|
460 | path = &filename[7]; |
---|
461 | #endif |
---|
462 | } else |
---|
463 | path = filename; |
---|
464 | |
---|
465 | if (path == NULL) |
---|
466 | return(NULL); |
---|
467 | if (!xmlCheckFilename(path)) |
---|
468 | return(NULL); |
---|
469 | |
---|
470 | fd = gzopen(path, "rb"); |
---|
471 | return((void *) fd); |
---|
472 | } |
---|
473 | |
---|
474 | /** |
---|
475 | * xmlGzfileOpenW: |
---|
476 | * @filename: the URI for matching |
---|
477 | * @compression: the compression factor (0 - 9 included) |
---|
478 | * |
---|
479 | * input from compressed file open |
---|
480 | * if @filename is " " then the standard input is used |
---|
481 | * |
---|
482 | * Returns an I/O context or NULL in case of error |
---|
483 | */ |
---|
484 | static void * |
---|
485 | xmlGzfileOpenW (const char *filename, int compression) { |
---|
486 | const char *path = NULL; |
---|
487 | char mode[15]; |
---|
488 | gzFile fd; |
---|
489 | |
---|
490 | sprintf(mode, "wb%d", compression); |
---|
491 | if (!strcmp(filename, "-")) { |
---|
492 | fd = gzdopen(dup(1), mode); |
---|
493 | return((void *) fd); |
---|
494 | } |
---|
495 | |
---|
496 | if (!strncmp(filename, "file://localhost", 16)) |
---|
497 | path = &filename[16]; |
---|
498 | else if (!strncmp(filename, "file:///", 8)) { |
---|
499 | #if defined (_WIN32) && !defined(__CYGWIN__) |
---|
500 | path = &filename[8]; |
---|
501 | #else |
---|
502 | path = &filename[7]; |
---|
503 | #endif |
---|
504 | } else |
---|
505 | path = filename; |
---|
506 | |
---|
507 | if (path == NULL) |
---|
508 | return(NULL); |
---|
509 | |
---|
510 | fd = gzopen(path, mode); |
---|
511 | return((void *) fd); |
---|
512 | } |
---|
513 | |
---|
514 | /** |
---|
515 | * xmlGzfileRead: |
---|
516 | * @context: the I/O context |
---|
517 | * @buffer: where to drop data |
---|
518 | * @len: number of bytes to write |
---|
519 | * |
---|
520 | * Read @len bytes to @buffer from the compressed I/O channel. |
---|
521 | * |
---|
522 | * Returns the number of bytes written |
---|
523 | */ |
---|
524 | static int |
---|
525 | xmlGzfileRead (void * context, char * buffer, int len) { |
---|
526 | return(gzread((gzFile) context, &buffer[0], len)); |
---|
527 | } |
---|
528 | |
---|
529 | /** |
---|
530 | * xmlGzfileWrite: |
---|
531 | * @context: the I/O context |
---|
532 | * @buffer: where to drop data |
---|
533 | * @len: number of bytes to write |
---|
534 | * |
---|
535 | * Write @len bytes from @buffer to the compressed I/O channel. |
---|
536 | * |
---|
537 | * Returns the number of bytes written |
---|
538 | */ |
---|
539 | static int |
---|
540 | xmlGzfileWrite (void * context, const char * buffer, int len) { |
---|
541 | return(gzwrite((gzFile) context, (char *) &buffer[0], len)); |
---|
542 | } |
---|
543 | |
---|
544 | /** |
---|
545 | * xmlGzfileClose: |
---|
546 | * @context: the I/O context |
---|
547 | * |
---|
548 | * Close a compressed I/O channel |
---|
549 | */ |
---|
550 | static int |
---|
551 | xmlGzfileClose (void * context) { |
---|
552 | return ( ( gzclose((gzFile) context) == Z_OK ) ? 0 : -1 ); |
---|
553 | } |
---|
554 | #endif /* HAVE_ZLIB_H */ |
---|
555 | |
---|
556 | #ifdef LIBXML_HTTP_ENABLED |
---|
557 | /************************************************************************ |
---|
558 | * * |
---|
559 | * I/O for HTTP file accesses * |
---|
560 | * * |
---|
561 | ************************************************************************/ |
---|
562 | |
---|
563 | typedef struct xmlIOHTTPWriteCtxt_ |
---|
564 | { |
---|
565 | int compression; |
---|
566 | |
---|
567 | char * uri; |
---|
568 | |
---|
569 | void * doc_buff; |
---|
570 | |
---|
571 | } xmlIOHTTPWriteCtxt, *xmlIOHTTPWriteCtxtPtr; |
---|
572 | |
---|
573 | #ifdef HAVE_ZLIB_H |
---|
574 | |
---|
575 | #define DFLT_WBITS ( -15 ) |
---|
576 | #define DFLT_MEM_LVL ( 8 ) |
---|
577 | #define GZ_MAGIC1 ( 0x1f ) |
---|
578 | #define GZ_MAGIC2 ( 0x8b ) |
---|
579 | #define LXML_ZLIB_OS_CODE ( 0x03 ) |
---|
580 | #define INIT_HTTP_BUFF_SIZE ( 32768 ) |
---|
581 | #define DFLT_ZLIB_RATIO ( 5 ) |
---|
582 | |
---|
583 | /* |
---|
584 | ** Data structure and functions to work with sending compressed data |
---|
585 | ** via HTTP. |
---|
586 | */ |
---|
587 | |
---|
588 | typedef struct xmlZMemBuff_ |
---|
589 | { |
---|
590 | unsigned long size; |
---|
591 | unsigned long crc; |
---|
592 | |
---|
593 | unsigned char * zbuff; |
---|
594 | z_stream zctrl; |
---|
595 | |
---|
596 | } xmlZMemBuff, *xmlZMemBuffPtr; |
---|
597 | |
---|
598 | /** |
---|
599 | * append_reverse_ulong |
---|
600 | * @buff: Compressed memory buffer |
---|
601 | * @data: Unsigned long to append |
---|
602 | * |
---|
603 | * Append a unsigned long in reverse byte order to the end of the |
---|
604 | * memory buffer. |
---|
605 | */ |
---|
606 | static void |
---|
607 | append_reverse_ulong( xmlZMemBuff * buff, unsigned long data ) { |
---|
608 | |
---|
609 | int idx; |
---|
610 | |
---|
611 | if ( buff == NULL ) |
---|
612 | return; |
---|
613 | |
---|
614 | /* |
---|
615 | ** This is plagiarized from putLong in gzio.c (zlib source) where |
---|
616 | ** the number "4" is hardcoded. If zlib is ever patched to |
---|
617 | ** support 64 bit file sizes, this code would need to be patched |
---|
618 | ** as well. |
---|
619 | */ |
---|
620 | |
---|
621 | for ( idx = 0; idx < 4; idx++ ) { |
---|
622 | *buff->zctrl.next_out = ( data & 0xff ); |
---|
623 | data >>= 8; |
---|
624 | buff->zctrl.next_out++; |
---|
625 | } |
---|
626 | |
---|
627 | return; |
---|
628 | } |
---|
629 | |
---|
630 | /** |
---|
631 | * |
---|
632 | * xmlFreeZMemBuff |
---|
633 | * @buff: The memory buffer context to clear |
---|
634 | * |
---|
635 | * Release all the resources associated with the compressed memory buffer. |
---|
636 | */ |
---|
637 | static void |
---|
638 | xmlFreeZMemBuff( xmlZMemBuffPtr buff ) { |
---|
639 | |
---|
640 | int z_err; |
---|
641 | |
---|
642 | if ( buff == NULL ) |
---|
643 | return; |
---|
644 | |
---|
645 | xmlFree( buff->zbuff ); |
---|
646 | z_err = deflateEnd( &buff->zctrl ); |
---|
647 | #ifdef DEBUG_HTTP |
---|
648 | if ( z_err != Z_OK ) |
---|
649 | xmlGenericError( xmlGenericErrorContext, |
---|
650 | "xmlFreeZMemBuff: Error releasing zlib context: %d\n", |
---|
651 | z_err ); |
---|
652 | #endif |
---|
653 | |
---|
654 | xmlFree( buff ); |
---|
655 | return; |
---|
656 | } |
---|
657 | |
---|
658 | /** |
---|
659 | * xmlCreateZMemBuff |
---|
660 | *@compression: Compression value to use |
---|
661 | * |
---|
662 | * Create a memory buffer to hold the compressed XML document. The |
---|
663 | * compressed document in memory will end up being identical to what |
---|
664 | * would be created if gzopen/gzwrite/gzclose were being used to |
---|
665 | * write the document to disk. The code for the header/trailer data to |
---|
666 | * the compression is plagiarized from the zlib source files. |
---|
667 | */ |
---|
668 | static void * |
---|
669 | xmlCreateZMemBuff( int compression ) { |
---|
670 | |
---|
671 | int z_err; |
---|
672 | int hdr_lgth; |
---|
673 | xmlZMemBuffPtr buff = NULL; |
---|
674 | |
---|
675 | if ( ( compression < 1 ) || ( compression > 9 ) ) |
---|
676 | return ( NULL ); |
---|
677 | |
---|
678 | /* Create the control and data areas */ |
---|
679 | |
---|
680 | buff = xmlMalloc( sizeof( xmlZMemBuff ) ); |
---|
681 | if ( buff == NULL ) { |
---|
682 | xmlGenericError( xmlGenericErrorContext, |
---|
683 | "xmlCreateZMemBuff: %s\n", |
---|
684 | "Failure allocating buffer context." ); |
---|
685 | return ( NULL ); |
---|
686 | } |
---|
687 | |
---|
688 | (void)memset( buff, 0, sizeof( xmlZMemBuff ) ); |
---|
689 | buff->size = INIT_HTTP_BUFF_SIZE; |
---|
690 | buff->zbuff = xmlMalloc( buff->size ); |
---|
691 | if ( buff->zbuff == NULL ) { |
---|
692 | xmlFreeZMemBuff( buff ); |
---|
693 | xmlGenericError( xmlGenericErrorContext, |
---|
694 | "xmlCreateZMemBuff: %s\n", |
---|
695 | "Failure allocating data buffer." ); |
---|
696 | return ( NULL ); |
---|
697 | } |
---|
698 | |
---|
699 | z_err = deflateInit2( &buff->zctrl, compression, Z_DEFLATED, |
---|
700 | DFLT_WBITS, DFLT_MEM_LVL, Z_DEFAULT_STRATEGY ); |
---|
701 | if ( z_err != Z_OK ) { |
---|
702 | xmlFreeZMemBuff( buff ); |
---|
703 | buff = NULL; |
---|
704 | xmlGenericError( xmlGenericErrorContext, |
---|
705 | "xmlCreateZMemBuff: %s %d\n", |
---|
706 | "Error initializing compression context. ZLIB error:", |
---|
707 | z_err ); |
---|
708 | return ( NULL ); |
---|
709 | } |
---|
710 | |
---|
711 | /* Set the header data. The CRC will be needed for the trailer */ |
---|
712 | |
---|
713 | buff->crc = crc32( 0L, Z_NULL, 0 ); |
---|
714 | hdr_lgth = sprintf( (char *)buff->zbuff, "%c%c%c%c%c%c%c%c%c%c", |
---|
715 | GZ_MAGIC1, GZ_MAGIC2, Z_DEFLATED, |
---|
716 | 0, 0, 0, 0, 0, 0, LXML_ZLIB_OS_CODE ); |
---|
717 | buff->zctrl.next_out = buff->zbuff + hdr_lgth; |
---|
718 | buff->zctrl.avail_out = buff->size - hdr_lgth; |
---|
719 | |
---|
720 | return ( buff ); |
---|
721 | } |
---|
722 | |
---|
723 | /** |
---|
724 | * xmlZMemBuffExtend |
---|
725 | * @buff: Buffer used to compress and consolidate data. |
---|
726 | * @ext_amt: Number of bytes to extend the buffer. |
---|
727 | * |
---|
728 | * Extend the internal buffer used to store the compressed data by the |
---|
729 | * specified amount. |
---|
730 | * |
---|
731 | * Returns 0 on success or -1 on failure to extend the buffer. On failure |
---|
732 | * the original buffer still exists at the original size. |
---|
733 | */ |
---|
734 | static int |
---|
735 | xmlZMemBuffExtend( xmlZMemBuffPtr buff, size_t ext_amt ) { |
---|
736 | |
---|
737 | int rc = -1; |
---|
738 | size_t new_size; |
---|
739 | size_t cur_used; |
---|
740 | |
---|
741 | unsigned char * tmp_ptr = NULL; |
---|
742 | |
---|
743 | if ( buff == NULL ) |
---|
744 | return ( -1 ); |
---|
745 | |
---|
746 | else if ( ext_amt == 0 ) |
---|
747 | return ( 0 ); |
---|
748 | |
---|
749 | cur_used = buff->zctrl.next_out - buff->zbuff; |
---|
750 | new_size = buff->size + ext_amt; |
---|
751 | |
---|
752 | #ifdef DEBUG_HTTP |
---|
753 | if ( cur_used > new_size ) |
---|
754 | xmlGenericError( xmlGenericErrorContext, |
---|
755 | "xmlZMemBuffExtend: %s\n%s %d bytes.\n", |
---|
756 | "Buffer overwrite detected during compressed memory", |
---|
757 | "buffer extension. Overflowed by", |
---|
758 | (cur_used - new_size ) ); |
---|
759 | #endif |
---|
760 | |
---|
761 | tmp_ptr = xmlRealloc( buff->zbuff, new_size ); |
---|
762 | if ( tmp_ptr != NULL ) { |
---|
763 | rc = 0; |
---|
764 | buff->size = new_size; |
---|
765 | buff->zbuff = tmp_ptr; |
---|
766 | buff->zctrl.next_out = tmp_ptr + cur_used; |
---|
767 | buff->zctrl.avail_out = new_size - cur_used; |
---|
768 | } |
---|
769 | else { |
---|
770 | xmlGenericError( xmlGenericErrorContext, |
---|
771 | "xmlZMemBuffExtend: %s %lu bytes.\n", |
---|
772 | "Allocation failure extending output buffer to", |
---|
773 | new_size ); |
---|
774 | } |
---|
775 | |
---|
776 | return ( rc ); |
---|
777 | } |
---|
778 | |
---|
779 | /** |
---|
780 | * xmlZMemBuffAppend |
---|
781 | * @buff: Buffer used to compress and consolidate data |
---|
782 | * @src: Uncompressed source content to append to buffer |
---|
783 | * @len: Length of source data to append to buffer |
---|
784 | * |
---|
785 | * Compress and append data to the internal buffer. The data buffer |
---|
786 | * will be expanded if needed to store the additional data. |
---|
787 | * |
---|
788 | * Returns the number of bytes appended to the buffer or -1 on error. |
---|
789 | */ |
---|
790 | static int |
---|
791 | xmlZMemBuffAppend( xmlZMemBuffPtr buff, const char * src, int len ) { |
---|
792 | |
---|
793 | int z_err; |
---|
794 | size_t min_accept; |
---|
795 | |
---|
796 | if ( ( buff == NULL ) || ( src == NULL ) ) |
---|
797 | return ( -1 ); |
---|
798 | |
---|
799 | buff->zctrl.avail_in = len; |
---|
800 | buff->zctrl.next_in = (unsigned char *)src; |
---|
801 | while ( buff->zctrl.avail_in > 0 ) { |
---|
802 | /* |
---|
803 | ** Extend the buffer prior to deflate call if a reasonable amount |
---|
804 | ** of output buffer space is not available. |
---|
805 | */ |
---|
806 | min_accept = buff->zctrl.avail_in / DFLT_ZLIB_RATIO; |
---|
807 | if ( buff->zctrl.avail_out <= min_accept ) { |
---|
808 | if ( xmlZMemBuffExtend( buff, buff->size ) == -1 ) |
---|
809 | return ( -1 ); |
---|
810 | } |
---|
811 | |
---|
812 | z_err = deflate( &buff->zctrl, Z_NO_FLUSH ); |
---|
813 | if ( z_err != Z_OK ) { |
---|
814 | xmlGenericError( xmlGenericErrorContext, |
---|
815 | "xmlZMemBuffAppend: %s %d %s - %d", |
---|
816 | "Compression error while appending", |
---|
817 | len, "bytes to buffer. ZLIB error", z_err ); |
---|
818 | return ( -1 ); |
---|
819 | } |
---|
820 | } |
---|
821 | |
---|
822 | buff->crc = crc32( buff->crc, (unsigned char *)src, len ); |
---|
823 | |
---|
824 | return ( len ); |
---|
825 | } |
---|
826 | |
---|
827 | /** |
---|
828 | * xmlZMemBuffGetContent |
---|
829 | * @buff: Compressed memory content buffer |
---|
830 | * @data_ref: Pointer reference to point to compressed content |
---|
831 | * |
---|
832 | * Flushes the compression buffers, appends gzip file trailers and |
---|
833 | * returns the compressed content and length of the compressed data. |
---|
834 | * NOTE: The gzip trailer code here is plagiarized from zlib source. |
---|
835 | * |
---|
836 | * Returns the length of the compressed data or -1 on error. |
---|
837 | */ |
---|
838 | static int |
---|
839 | xmlZMemBuffGetContent( xmlZMemBuffPtr buff, char ** data_ref ) { |
---|
840 | |
---|
841 | int zlgth = -1; |
---|
842 | int z_err; |
---|
843 | |
---|
844 | if ( ( buff == NULL ) || ( data_ref == NULL ) ) |
---|
845 | return ( -1 ); |
---|
846 | |
---|
847 | /* Need to loop until compression output buffers are flushed */ |
---|
848 | |
---|
849 | do |
---|
850 | { |
---|
851 | z_err = deflate( &buff->zctrl, Z_FINISH ); |
---|
852 | if ( z_err == Z_OK ) { |
---|
853 | /* In this case Z_OK means more buffer space needed */ |
---|
854 | |
---|
855 | if ( xmlZMemBuffExtend( buff, buff->size ) == -1 ) |
---|
856 | return ( -1 ); |
---|
857 | } |
---|
858 | } |
---|
859 | while ( z_err == Z_OK ); |
---|
860 | |
---|
861 | /* If the compression state is not Z_STREAM_END, some error occurred */ |
---|
862 | |
---|
863 | if ( z_err == Z_STREAM_END ) { |
---|
864 | |
---|
865 | /* Need to append the gzip data trailer */ |
---|
866 | |
---|
867 | if ( buff->zctrl.avail_out < ( 2 * sizeof( unsigned long ) ) ) { |
---|
868 | if ( xmlZMemBuffExtend(buff, (2 * sizeof(unsigned long))) == -1 ) |
---|
869 | return ( -1 ); |
---|
870 | } |
---|
871 | |
---|
872 | /* |
---|
873 | ** For whatever reason, the CRC and length data are pushed out |
---|
874 | ** in reverse byte order. So a memcpy can't be used here. |
---|
875 | */ |
---|
876 | |
---|
877 | append_reverse_ulong( buff, buff->crc ); |
---|
878 | append_reverse_ulong( buff, buff->zctrl.total_in ); |
---|
879 | |
---|
880 | zlgth = buff->zctrl.next_out - buff->zbuff; |
---|
881 | *data_ref = (char *)buff->zbuff; |
---|
882 | } |
---|
883 | |
---|
884 | else |
---|
885 | xmlGenericError( xmlGenericErrorContext, |
---|
886 | "xmlZMemBuffGetContent: %s - %d\n", |
---|
887 | "Error flushing zlib buffers. Error code", z_err ); |
---|
888 | |
---|
889 | return ( zlgth ); |
---|
890 | } |
---|
891 | #endif /* HAVE_ZLIB_H */ |
---|
892 | |
---|
893 | /** |
---|
894 | * xmlFreeHTTPWriteCtxt |
---|
895 | * @ctxt: Context to cleanup |
---|
896 | * |
---|
897 | * Free allocated memory and reclaim system resources. |
---|
898 | * |
---|
899 | * No return value. |
---|
900 | */ |
---|
901 | static void |
---|
902 | xmlFreeHTTPWriteCtxt( xmlIOHTTPWriteCtxtPtr ctxt ) |
---|
903 | { |
---|
904 | if ( ctxt->uri != NULL ) |
---|
905 | free( ctxt->uri ); |
---|
906 | |
---|
907 | if ( ctxt->doc_buff != NULL ) { |
---|
908 | |
---|
909 | #ifdef HAVE_ZLIB_H |
---|
910 | if ( ctxt->compression > 0 ) { |
---|
911 | xmlFreeZMemBuff( ctxt->doc_buff ); |
---|
912 | } |
---|
913 | else |
---|
914 | #endif |
---|
915 | { |
---|
916 | xmlOutputBufferClose( ctxt->doc_buff ); |
---|
917 | } |
---|
918 | } |
---|
919 | |
---|
920 | free( ctxt ); |
---|
921 | return; |
---|
922 | } |
---|
923 | |
---|
924 | |
---|
925 | /** |
---|
926 | * xmlIOHTTPMatch: |
---|
927 | * @filename: the URI for matching |
---|
928 | * |
---|
929 | * check if the URI matches an HTTP one |
---|
930 | * |
---|
931 | * Returns 1 if matches, 0 otherwise |
---|
932 | */ |
---|
933 | static int |
---|
934 | xmlIOHTTPMatch (const char *filename) { |
---|
935 | if (!strncmp(filename, "http://", 7)) |
---|
936 | return(1); |
---|
937 | return(0); |
---|
938 | } |
---|
939 | |
---|
940 | /** |
---|
941 | * xmlIOHTTPOpen: |
---|
942 | * @filename: the URI for matching |
---|
943 | * |
---|
944 | * open an HTTP I/O channel |
---|
945 | * |
---|
946 | * Returns an I/O context or NULL in case of error |
---|
947 | */ |
---|
948 | static void * |
---|
949 | xmlIOHTTPOpen (const char *filename) { |
---|
950 | return(xmlNanoHTTPOpen(filename, NULL)); |
---|
951 | } |
---|
952 | |
---|
953 | /** |
---|
954 | * xmlIOHTTPOpenW |
---|
955 | * @post_uri: The destination URI for the document |
---|
956 | * @compression: The compression desired for the document. |
---|
957 | * |
---|
958 | * Open a temporary buffer to collect the document for a subsequent HTTP POST |
---|
959 | * request. Non-static as is called from the output buffer creation routine. |
---|
960 | * |
---|
961 | * Returns an I/O context or NULL in case of error. |
---|
962 | */ |
---|
963 | |
---|
964 | void * |
---|
965 | xmlIOHTTPOpenW(const char *post_uri, int compression) |
---|
966 | { |
---|
967 | |
---|
968 | xmlIOHTTPWriteCtxtPtr ctxt = NULL; |
---|
969 | |
---|
970 | if (post_uri == NULL) |
---|
971 | return (NULL); |
---|
972 | |
---|
973 | ctxt = xmlMalloc(sizeof(xmlIOHTTPWriteCtxt)); |
---|
974 | if (ctxt == NULL) { |
---|
975 | xmlGenericError(xmlGenericErrorContext, |
---|
976 | "xmlIOHTTPOpenW: Failed to create output HTTP context.\n"); |
---|
977 | return (NULL); |
---|
978 | } |
---|
979 | |
---|
980 | (void) memset(ctxt, 0, sizeof(xmlIOHTTPWriteCtxt)); |
---|
981 | |
---|
982 | ctxt->uri = (char *) xmlStrdup((const xmlChar *)post_uri); |
---|
983 | if (ctxt->uri == NULL) { |
---|
984 | xmlGenericError(xmlGenericErrorContext, |
---|
985 | "xmlIOHTTPOpenW: Failed to duplicate destination URI.\n"); |
---|
986 | xmlFreeHTTPWriteCtxt(ctxt); |
---|
987 | return (NULL); |
---|
988 | } |
---|
989 | |
---|
990 | /* |
---|
991 | * ** Since the document length is required for an HTTP post, |
---|
992 | * ** need to put the document into a buffer. A memory buffer |
---|
993 | * ** is being used to avoid pushing the data to disk and back. |
---|
994 | */ |
---|
995 | |
---|
996 | #ifdef HAVE_ZLIB_H |
---|
997 | if ((compression > 0) && (compression <= 9)) { |
---|
998 | |
---|
999 | ctxt->compression = compression; |
---|
1000 | ctxt->doc_buff = xmlCreateZMemBuff(compression); |
---|
1001 | } else |
---|
1002 | #endif |
---|
1003 | { |
---|
1004 | /* Any character conversions should have been done before this */ |
---|
1005 | |
---|
1006 | ctxt->doc_buff = xmlAllocOutputBuffer(NULL); |
---|
1007 | } |
---|
1008 | |
---|
1009 | if (ctxt->doc_buff == NULL) { |
---|
1010 | xmlFreeHTTPWriteCtxt(ctxt); |
---|
1011 | ctxt = NULL; |
---|
1012 | } |
---|
1013 | |
---|
1014 | return (ctxt); |
---|
1015 | } |
---|
1016 | |
---|
1017 | /** |
---|
1018 | * xmlIOHTTPDfltOpenW |
---|
1019 | * @post_uri: The destination URI for this document. |
---|
1020 | * |
---|
1021 | * Calls xmlIOHTTPOpenW with no compression to set up for a subsequent |
---|
1022 | * HTTP post command. This function should generally not be used as |
---|
1023 | * the open callback is short circuited in xmlOutputBufferCreateFile. |
---|
1024 | * |
---|
1025 | * Returns a pointer to the new IO context. |
---|
1026 | */ |
---|
1027 | static void * |
---|
1028 | xmlIOHTTPDfltOpenW( const char * post_uri ) { |
---|
1029 | return ( xmlIOHTTPOpenW( post_uri, 0 ) ); |
---|
1030 | } |
---|
1031 | |
---|
1032 | /** |
---|
1033 | * xmlIOHTTPRead: |
---|
1034 | * @context: the I/O context |
---|
1035 | * @buffer: where to drop data |
---|
1036 | * @len: number of bytes to write |
---|
1037 | * |
---|
1038 | * Read @len bytes to @buffer from the I/O channel. |
---|
1039 | * |
---|
1040 | * Returns the number of bytes written |
---|
1041 | */ |
---|
1042 | static int |
---|
1043 | xmlIOHTTPRead(void * context, char * buffer, int len) { |
---|
1044 | return(xmlNanoHTTPRead(context, &buffer[0], len)); |
---|
1045 | } |
---|
1046 | |
---|
1047 | /** |
---|
1048 | * xmlIOHTTPWrite |
---|
1049 | * @context: previously opened writing context |
---|
1050 | * @buffer: data to output to temporary buffer |
---|
1051 | * @len: bytes to output |
---|
1052 | * |
---|
1053 | * Collect data from memory buffer into a temporary file for later |
---|
1054 | * processing. |
---|
1055 | * |
---|
1056 | * Returns number of bytes written. |
---|
1057 | */ |
---|
1058 | |
---|
1059 | static int |
---|
1060 | xmlIOHTTPWrite( void * context, const char * buffer, int len ) { |
---|
1061 | |
---|
1062 | xmlIOHTTPWriteCtxtPtr ctxt = context; |
---|
1063 | |
---|
1064 | if ( ( ctxt == NULL ) || ( ctxt->doc_buff == NULL ) || ( buffer == NULL ) ) |
---|
1065 | return ( -1 ); |
---|
1066 | |
---|
1067 | if ( len > 0 ) { |
---|
1068 | |
---|
1069 | /* Use gzwrite or fwrite as previously setup in the open call */ |
---|
1070 | |
---|
1071 | #ifdef HAVE_ZLIB_H |
---|
1072 | if ( ctxt->compression > 0 ) |
---|
1073 | len = xmlZMemBuffAppend( ctxt->doc_buff, buffer, len ); |
---|
1074 | |
---|
1075 | else |
---|
1076 | #endif |
---|
1077 | len = xmlOutputBufferWrite( ctxt->doc_buff, len, buffer ); |
---|
1078 | |
---|
1079 | if ( len < 0 ) { |
---|
1080 | xmlGenericError( xmlGenericErrorContext, |
---|
1081 | "xmlIOHTTPWrite: %s\n%s '%s'.\n", |
---|
1082 | "Error appending to internal buffer.", |
---|
1083 | "Error sending document to URI", |
---|
1084 | ctxt->uri ); |
---|
1085 | } |
---|
1086 | } |
---|
1087 | |
---|
1088 | return ( len ); |
---|
1089 | } |
---|
1090 | |
---|
1091 | |
---|
1092 | /** |
---|
1093 | * xmlIOHTTPClose: |
---|
1094 | * @context: the I/O context |
---|
1095 | * |
---|
1096 | * Close an HTTP I/O channel |
---|
1097 | */ |
---|
1098 | static int |
---|
1099 | xmlIOHTTPClose (void * context) { |
---|
1100 | xmlNanoHTTPClose(context); |
---|
1101 | return 0; |
---|
1102 | } |
---|
1103 | |
---|
1104 | /** |
---|
1105 | * xmlIOHTTCloseWrite |
---|
1106 | * @context: The I/O context |
---|
1107 | * @http_mthd: The HTTP method to be used when sending the data |
---|
1108 | * |
---|
1109 | * Close the transmit HTTP I/O channel and actually send the data. |
---|
1110 | */ |
---|
1111 | static int |
---|
1112 | xmlIOHTTPCloseWrite( void * context, const char * http_mthd ) { |
---|
1113 | |
---|
1114 | int close_rc = -1; |
---|
1115 | int http_rtn = 0; |
---|
1116 | int content_lgth = 0; |
---|
1117 | xmlIOHTTPWriteCtxtPtr ctxt = context; |
---|
1118 | |
---|
1119 | char * http_content = NULL; |
---|
1120 | char * content_encoding = NULL; |
---|
1121 | char * content_type = (char *) "text/xml"; |
---|
1122 | void * http_ctxt = NULL; |
---|
1123 | |
---|
1124 | if ( ( ctxt == NULL ) || ( http_mthd == NULL ) ) |
---|
1125 | return ( -1 ); |
---|
1126 | |
---|
1127 | /* Retrieve the content from the appropriate buffer */ |
---|
1128 | |
---|
1129 | #ifdef HAVE_ZLIB_H |
---|
1130 | |
---|
1131 | if ( ctxt->compression > 0 ) { |
---|
1132 | content_lgth = xmlZMemBuffGetContent( ctxt->doc_buff, &http_content ); |
---|
1133 | content_encoding = (char *) "Content-Encoding: gzip"; |
---|
1134 | } |
---|
1135 | else |
---|
1136 | #endif |
---|
1137 | { |
---|
1138 | /* Pull the data out of the memory output buffer */ |
---|
1139 | |
---|
1140 | xmlOutputBufferPtr dctxt = ctxt->doc_buff; |
---|
1141 | http_content = (char *)dctxt->buffer->content; |
---|
1142 | content_lgth = dctxt->buffer->use; |
---|
1143 | } |
---|
1144 | |
---|
1145 | if ( http_content == NULL ) { |
---|
1146 | xmlGenericError( xmlGenericErrorContext, |
---|
1147 | "xmlIOHTTPCloseWrite: %s '%s' %s '%s'.\n", |
---|
1148 | "Error retrieving content.\nUnable to", |
---|
1149 | http_mthd, "data to URI", ctxt->uri ); |
---|
1150 | } |
---|
1151 | |
---|
1152 | else { |
---|
1153 | |
---|
1154 | http_ctxt = xmlNanoHTTPMethod( ctxt->uri, http_mthd, http_content, |
---|
1155 | &content_type, content_encoding, |
---|
1156 | content_lgth ); |
---|
1157 | |
---|
1158 | if ( http_ctxt != NULL ) { |
---|
1159 | #ifdef DEBUG_HTTP |
---|
1160 | /* If testing/debugging - dump reply with request content */ |
---|
1161 | |
---|
1162 | FILE * tst_file = NULL; |
---|
1163 | char buffer[ 4096 ]; |
---|
1164 | char * dump_name = NULL; |
---|
1165 | int avail; |
---|
1166 | |
---|
1167 | xmlGenericError( xmlGenericErrorContext, |
---|
1168 | "xmlNanoHTTPCloseWrite: HTTP %s to\n%s returned %d.\n", |
---|
1169 | http_mthd, ctxt->uri, |
---|
1170 | xmlNanoHTTPReturnCode( http_ctxt ) ); |
---|
1171 | |
---|
1172 | /* |
---|
1173 | ** Since either content or reply may be gzipped, |
---|
1174 | ** dump them to separate files instead of the |
---|
1175 | ** standard error context. |
---|
1176 | */ |
---|
1177 | |
---|
1178 | dump_name = tempnam( NULL, "lxml" ); |
---|
1179 | if ( dump_name != NULL ) { |
---|
1180 | (void)sprintf( buffer, "%s.content", dump_name ); |
---|
1181 | |
---|
1182 | tst_file = fopen( buffer, "w" ); |
---|
1183 | if ( tst_file != NULL ) { |
---|
1184 | xmlGenericError( xmlGenericErrorContext, |
---|
1185 | "Transmitted content saved in file: %s\n", buffer ); |
---|
1186 | |
---|
1187 | fwrite( http_content, sizeof( char ), |
---|
1188 | content_lgth, tst_file ); |
---|
1189 | fclose( tst_file ); |
---|
1190 | } |
---|
1191 | |
---|
1192 | (void)sprintf( buffer, "%s.reply", dump_name ); |
---|
1193 | tst_file = fopen( buffer, "w" ); |
---|
1194 | if ( tst_file != NULL ) { |
---|
1195 | xmlGenericError( xmlGenericErrorContext, |
---|
1196 | "Reply content saved in file: %s\n", buffer ); |
---|
1197 | |
---|
1198 | |
---|
1199 | while ( (avail = xmlNanoHTTPRead( http_ctxt, |
---|
1200 | buffer, sizeof( buffer ) )) > 0 ) { |
---|
1201 | |
---|
1202 | fwrite( buffer, sizeof( char ), avail, tst_file ); |
---|
1203 | } |
---|
1204 | |
---|
1205 | fclose( tst_file ); |
---|
1206 | } |
---|
1207 | |
---|
1208 | free( dump_name ); |
---|
1209 | } |
---|
1210 | #endif /* DEBUG_HTTP */ |
---|
1211 | |
---|
1212 | http_rtn = xmlNanoHTTPReturnCode( http_ctxt ); |
---|
1213 | if ( ( http_rtn >= 200 ) && ( http_rtn < 300 ) ) |
---|
1214 | close_rc = 0; |
---|
1215 | else |
---|
1216 | xmlGenericError( xmlGenericErrorContext, |
---|
1217 | "xmlIOHTTPCloseWrite: HTTP '%s' of %d %s\n'%s' %s %d\n", |
---|
1218 | http_mthd, content_lgth, |
---|
1219 | "bytes to URI", ctxt->uri, |
---|
1220 | "failed. HTTP return code:", http_rtn ); |
---|
1221 | |
---|
1222 | xmlNanoHTTPClose( http_ctxt ); |
---|
1223 | xmlFree( content_type ); |
---|
1224 | } |
---|
1225 | } |
---|
1226 | |
---|
1227 | /* Final cleanups */ |
---|
1228 | |
---|
1229 | xmlFreeHTTPWriteCtxt( ctxt ); |
---|
1230 | |
---|
1231 | return ( close_rc ); |
---|
1232 | } |
---|
1233 | |
---|
1234 | /** |
---|
1235 | * xmlIOHTTPClosePut |
---|
1236 | * |
---|
1237 | * @context: The I/O context |
---|
1238 | * |
---|
1239 | * Close the transmit HTTP I/O channel and actually send data using a PUT |
---|
1240 | * HTTP method. |
---|
1241 | */ |
---|
1242 | static int |
---|
1243 | xmlIOHTTPClosePut( void * ctxt ) { |
---|
1244 | return ( xmlIOHTTPCloseWrite( ctxt, "PUT" ) ); |
---|
1245 | } |
---|
1246 | |
---|
1247 | |
---|
1248 | /** |
---|
1249 | * xmlIOHTTPClosePost |
---|
1250 | * |
---|
1251 | * @context: The I/O context |
---|
1252 | * |
---|
1253 | * Close the transmit HTTP I/O channel and actually send data using a POST |
---|
1254 | * HTTP method. |
---|
1255 | */ |
---|
1256 | static int |
---|
1257 | xmlIOHTTPClosePost( void * ctxt ) { |
---|
1258 | return ( xmlIOHTTPCloseWrite( ctxt, "POST" ) ); |
---|
1259 | } |
---|
1260 | |
---|
1261 | #endif /* LIBXML_HTTP_ENABLED */ |
---|
1262 | |
---|
1263 | #ifdef LIBXML_FTP_ENABLED |
---|
1264 | /************************************************************************ |
---|
1265 | * * |
---|
1266 | * I/O for FTP file accesses * |
---|
1267 | * * |
---|
1268 | ************************************************************************/ |
---|
1269 | /** |
---|
1270 | * xmlIOFTPMatch: |
---|
1271 | * @filename: the URI for matching |
---|
1272 | * |
---|
1273 | * check if the URI matches an FTP one |
---|
1274 | * |
---|
1275 | * Returns 1 if matches, 0 otherwise |
---|
1276 | */ |
---|
1277 | static int |
---|
1278 | xmlIOFTPMatch (const char *filename) { |
---|
1279 | if (!strncmp(filename, "ftp://", 6)) |
---|
1280 | return(1); |
---|
1281 | return(0); |
---|
1282 | } |
---|
1283 | |
---|
1284 | /** |
---|
1285 | * xmlIOFTPOpen: |
---|
1286 | * @filename: the URI for matching |
---|
1287 | * |
---|
1288 | * open an FTP I/O channel |
---|
1289 | * |
---|
1290 | * Returns an I/O context or NULL in case of error |
---|
1291 | */ |
---|
1292 | static void * |
---|
1293 | xmlIOFTPOpen (const char *filename) { |
---|
1294 | return(xmlNanoFTPOpen(filename)); |
---|
1295 | } |
---|
1296 | |
---|
1297 | /** |
---|
1298 | * xmlIOFTPRead: |
---|
1299 | * @context: the I/O context |
---|
1300 | * @buffer: where to drop data |
---|
1301 | * @len: number of bytes to write |
---|
1302 | * |
---|
1303 | * Read @len bytes to @buffer from the I/O channel. |
---|
1304 | * |
---|
1305 | * Returns the number of bytes written |
---|
1306 | */ |
---|
1307 | static int |
---|
1308 | xmlIOFTPRead(void * context, char * buffer, int len) { |
---|
1309 | return(xmlNanoFTPRead(context, &buffer[0], len)); |
---|
1310 | } |
---|
1311 | |
---|
1312 | /** |
---|
1313 | * xmlIOFTPClose: |
---|
1314 | * @context: the I/O context |
---|
1315 | * |
---|
1316 | * Close an FTP I/O channel |
---|
1317 | */ |
---|
1318 | static int |
---|
1319 | xmlIOFTPClose (void * context) { |
---|
1320 | return ( xmlNanoFTPClose(context) ); |
---|
1321 | } |
---|
1322 | #endif /* LIBXML_FTP_ENABLED */ |
---|
1323 | |
---|
1324 | |
---|
1325 | /** |
---|
1326 | * xmlRegisterInputCallbacks: |
---|
1327 | * @matchFunc: the xmlInputMatchCallback |
---|
1328 | * @openFunc: the xmlInputOpenCallback |
---|
1329 | * @readFunc: the xmlInputReadCallback |
---|
1330 | * @closeFunc: the xmlInputCloseCallback |
---|
1331 | * |
---|
1332 | * Register a new set of I/O callback for handling parser input. |
---|
1333 | * |
---|
1334 | * Returns the registered handler number or -1 in case of error |
---|
1335 | */ |
---|
1336 | int |
---|
1337 | xmlRegisterInputCallbacks(xmlInputMatchCallback matchFunc, |
---|
1338 | xmlInputOpenCallback openFunc, xmlInputReadCallback readFunc, |
---|
1339 | xmlInputCloseCallback closeFunc) { |
---|
1340 | if (xmlInputCallbackNr >= MAX_INPUT_CALLBACK) { |
---|
1341 | return(-1); |
---|
1342 | } |
---|
1343 | xmlInputCallbackTable[xmlInputCallbackNr].matchcallback = matchFunc; |
---|
1344 | xmlInputCallbackTable[xmlInputCallbackNr].opencallback = openFunc; |
---|
1345 | xmlInputCallbackTable[xmlInputCallbackNr].readcallback = readFunc; |
---|
1346 | xmlInputCallbackTable[xmlInputCallbackNr].closecallback = closeFunc; |
---|
1347 | return(xmlInputCallbackNr++); |
---|
1348 | } |
---|
1349 | |
---|
1350 | /** |
---|
1351 | * xmlRegisterOutputCallbacks: |
---|
1352 | * @matchFunc: the xmlOutputMatchCallback |
---|
1353 | * @openFunc: the xmlOutputOpenCallback |
---|
1354 | * @writeFunc: the xmlOutputWriteCallback |
---|
1355 | * @closeFunc: the xmlOutputCloseCallback |
---|
1356 | * |
---|
1357 | * Register a new set of I/O callback for handling output. |
---|
1358 | * |
---|
1359 | * Returns the registered handler number or -1 in case of error |
---|
1360 | */ |
---|
1361 | int |
---|
1362 | xmlRegisterOutputCallbacks(xmlOutputMatchCallback matchFunc, |
---|
1363 | xmlOutputOpenCallback openFunc, xmlOutputWriteCallback writeFunc, |
---|
1364 | xmlOutputCloseCallback closeFunc) { |
---|
1365 | if (xmlOutputCallbackNr >= MAX_INPUT_CALLBACK) { |
---|
1366 | return(-1); |
---|
1367 | } |
---|
1368 | xmlOutputCallbackTable[xmlOutputCallbackNr].matchcallback = matchFunc; |
---|
1369 | xmlOutputCallbackTable[xmlOutputCallbackNr].opencallback = openFunc; |
---|
1370 | xmlOutputCallbackTable[xmlOutputCallbackNr].writecallback = writeFunc; |
---|
1371 | xmlOutputCallbackTable[xmlOutputCallbackNr].closecallback = closeFunc; |
---|
1372 | return(xmlOutputCallbackNr++); |
---|
1373 | } |
---|
1374 | |
---|
1375 | /** |
---|
1376 | * xmlRegisterDefaultInputCallbacks: |
---|
1377 | * |
---|
1378 | * Registers the default compiled-in I/O handlers. |
---|
1379 | */ |
---|
1380 | void |
---|
1381 | #ifdef VMS |
---|
1382 | xmlRegisterDefInputCallbacks |
---|
1383 | #else |
---|
1384 | xmlRegisterDefaultInputCallbacks |
---|
1385 | #endif |
---|
1386 | (void) { |
---|
1387 | if (xmlInputCallbackInitialized) |
---|
1388 | return; |
---|
1389 | |
---|
1390 | xmlRegisterInputCallbacks(xmlFileMatch, xmlFileOpen, |
---|
1391 | xmlFileRead, xmlFileClose); |
---|
1392 | #ifdef HAVE_ZLIB_H |
---|
1393 | xmlRegisterInputCallbacks(xmlGzfileMatch, xmlGzfileOpen, |
---|
1394 | xmlGzfileRead, xmlGzfileClose); |
---|
1395 | #endif /* HAVE_ZLIB_H */ |
---|
1396 | |
---|
1397 | #ifdef LIBXML_HTTP_ENABLED |
---|
1398 | xmlRegisterInputCallbacks(xmlIOHTTPMatch, xmlIOHTTPOpen, |
---|
1399 | xmlIOHTTPRead, xmlIOHTTPClose); |
---|
1400 | #endif /* LIBXML_HTTP_ENABLED */ |
---|
1401 | |
---|
1402 | #ifdef LIBXML_FTP_ENABLED |
---|
1403 | xmlRegisterInputCallbacks(xmlIOFTPMatch, xmlIOFTPOpen, |
---|
1404 | xmlIOFTPRead, xmlIOFTPClose); |
---|
1405 | #endif /* LIBXML_FTP_ENABLED */ |
---|
1406 | xmlInputCallbackInitialized = 1; |
---|
1407 | } |
---|
1408 | |
---|
1409 | /** |
---|
1410 | * xmlRegisterDefaultOutputCallbacks: |
---|
1411 | * |
---|
1412 | * Registers the default compiled-in I/O handlers. |
---|
1413 | */ |
---|
1414 | void |
---|
1415 | #ifdef VMS |
---|
1416 | xmlRegisterDefOutputCallbacks |
---|
1417 | #else |
---|
1418 | xmlRegisterDefaultOutputCallbacks |
---|
1419 | #endif |
---|
1420 | (void) { |
---|
1421 | if (xmlOutputCallbackInitialized) |
---|
1422 | return; |
---|
1423 | |
---|
1424 | xmlRegisterOutputCallbacks(xmlFileMatch, xmlFileOpenW, |
---|
1425 | xmlFileWrite, xmlFileClose); |
---|
1426 | |
---|
1427 | #ifdef LIBXML_HTTP_ENABLED |
---|
1428 | xmlRegisterOutputCallbacks(xmlIOHTTPMatch, xmlIOHTTPDfltOpenW, |
---|
1429 | xmlIOHTTPWrite, xmlIOHTTPClosePut); |
---|
1430 | #endif |
---|
1431 | |
---|
1432 | /********************************* |
---|
1433 | No way a-priori to distinguish between gzipped files from |
---|
1434 | uncompressed ones except opening if existing then closing |
---|
1435 | and saving with same compression ratio ... a pain. |
---|
1436 | |
---|
1437 | #ifdef HAVE_ZLIB_H |
---|
1438 | xmlRegisterOutputCallbacks(xmlGzfileMatch, xmlGzfileOpen, |
---|
1439 | xmlGzfileWrite, xmlGzfileClose); |
---|
1440 | #endif |
---|
1441 | |
---|
1442 | Nor FTP PUT .... |
---|
1443 | #ifdef LIBXML_FTP_ENABLED |
---|
1444 | xmlRegisterOutputCallbacks(xmlIOFTPMatch, xmlIOFTPOpen, |
---|
1445 | xmlIOFTPWrite, xmlIOFTPClose); |
---|
1446 | #endif |
---|
1447 | **********************************/ |
---|
1448 | xmlOutputCallbackInitialized = 1; |
---|
1449 | } |
---|
1450 | |
---|
1451 | #ifdef LIBXML_HTTP_ENABLED |
---|
1452 | /** |
---|
1453 | * xmlRegisterHTTPPostCallbacks |
---|
1454 | * |
---|
1455 | * By default, libxml submits HTTP output requests using the "PUT" method. |
---|
1456 | * Calling this method changes the HTTP output method to use the "POST" |
---|
1457 | * method instead. |
---|
1458 | * |
---|
1459 | */ |
---|
1460 | void |
---|
1461 | xmlRegisterHTTPPostCallbacks( void ) { |
---|
1462 | |
---|
1463 | /* Register defaults if not done previously */ |
---|
1464 | |
---|
1465 | if ( xmlOutputCallbackInitialized == 0 ) |
---|
1466 | xmlRegisterDefaultOutputCallbacks( ); |
---|
1467 | |
---|
1468 | xmlRegisterOutputCallbacks(xmlIOHTTPMatch, xmlIOHTTPDfltOpenW, |
---|
1469 | xmlIOHTTPWrite, xmlIOHTTPClosePost); |
---|
1470 | return; |
---|
1471 | } |
---|
1472 | #endif |
---|
1473 | |
---|
1474 | /** |
---|
1475 | * xmlAllocParserInputBuffer: |
---|
1476 | * @enc: the charset encoding if known |
---|
1477 | * |
---|
1478 | * Create a buffered parser input for progressive parsing |
---|
1479 | * |
---|
1480 | * Returns the new parser input or NULL |
---|
1481 | */ |
---|
1482 | xmlParserInputBufferPtr |
---|
1483 | xmlAllocParserInputBuffer(xmlCharEncoding enc) { |
---|
1484 | xmlParserInputBufferPtr ret; |
---|
1485 | |
---|
1486 | ret = (xmlParserInputBufferPtr) xmlMalloc(sizeof(xmlParserInputBuffer)); |
---|
1487 | if (ret == NULL) { |
---|
1488 | xmlGenericError(xmlGenericErrorContext, |
---|
1489 | "xmlAllocParserInputBuffer : out of memory!\n"); |
---|
1490 | return(NULL); |
---|
1491 | } |
---|
1492 | memset(ret, 0, (size_t) sizeof(xmlParserInputBuffer)); |
---|
1493 | ret->buffer = xmlBufferCreate(); |
---|
1494 | if (ret->buffer == NULL) { |
---|
1495 | xmlFree(ret); |
---|
1496 | return(NULL); |
---|
1497 | } |
---|
1498 | ret->buffer->alloc = XML_BUFFER_ALLOC_DOUBLEIT; |
---|
1499 | ret->encoder = xmlGetCharEncodingHandler(enc); |
---|
1500 | if (ret->encoder != NULL) |
---|
1501 | ret->raw = xmlBufferCreate(); |
---|
1502 | else |
---|
1503 | ret->raw = NULL; |
---|
1504 | ret->readcallback = NULL; |
---|
1505 | ret->closecallback = NULL; |
---|
1506 | ret->context = NULL; |
---|
1507 | |
---|
1508 | return(ret); |
---|
1509 | } |
---|
1510 | |
---|
1511 | /** |
---|
1512 | * xmlAllocOutputBuffer: |
---|
1513 | * @encoder: the encoding converter or NULL |
---|
1514 | * |
---|
1515 | * Create a buffered parser output |
---|
1516 | * |
---|
1517 | * Returns the new parser output or NULL |
---|
1518 | */ |
---|
1519 | xmlOutputBufferPtr |
---|
1520 | xmlAllocOutputBuffer(xmlCharEncodingHandlerPtr encoder) { |
---|
1521 | xmlOutputBufferPtr ret; |
---|
1522 | |
---|
1523 | ret = (xmlOutputBufferPtr) xmlMalloc(sizeof(xmlOutputBuffer)); |
---|
1524 | if (ret == NULL) { |
---|
1525 | xmlGenericError(xmlGenericErrorContext, |
---|
1526 | "xmlAllocOutputBuffer : out of memory!\n"); |
---|
1527 | return(NULL); |
---|
1528 | } |
---|
1529 | memset(ret, 0, (size_t) sizeof(xmlOutputBuffer)); |
---|
1530 | ret->buffer = xmlBufferCreate(); |
---|
1531 | if (ret->buffer == NULL) { |
---|
1532 | xmlFree(ret); |
---|
1533 | return(NULL); |
---|
1534 | } |
---|
1535 | ret->buffer->alloc = XML_BUFFER_ALLOC_DOUBLEIT; |
---|
1536 | ret->encoder = encoder; |
---|
1537 | if (encoder != NULL) { |
---|
1538 | ret->conv = xmlBufferCreateSize(4000); |
---|
1539 | /* |
---|
1540 | * This call is designed to initiate the encoder state |
---|
1541 | */ |
---|
1542 | xmlCharEncOutFunc(encoder, ret->conv, NULL); |
---|
1543 | } else |
---|
1544 | ret->conv = NULL; |
---|
1545 | ret->writecallback = NULL; |
---|
1546 | ret->closecallback = NULL; |
---|
1547 | ret->context = NULL; |
---|
1548 | ret->written = 0; |
---|
1549 | |
---|
1550 | return(ret); |
---|
1551 | } |
---|
1552 | |
---|
1553 | /** |
---|
1554 | * xmlFreeParserInputBuffer: |
---|
1555 | * @in: a buffered parser input |
---|
1556 | * |
---|
1557 | * Free up the memory used by a buffered parser input |
---|
1558 | */ |
---|
1559 | void |
---|
1560 | xmlFreeParserInputBuffer(xmlParserInputBufferPtr in) { |
---|
1561 | if (in->raw) { |
---|
1562 | xmlBufferFree(in->raw); |
---|
1563 | in->raw = NULL; |
---|
1564 | } |
---|
1565 | if (in->encoder != NULL) { |
---|
1566 | xmlCharEncCloseFunc(in->encoder); |
---|
1567 | } |
---|
1568 | if (in->closecallback != NULL) { |
---|
1569 | in->closecallback(in->context); |
---|
1570 | } |
---|
1571 | if (in->buffer != NULL) { |
---|
1572 | xmlBufferFree(in->buffer); |
---|
1573 | in->buffer = NULL; |
---|
1574 | } |
---|
1575 | |
---|
1576 | xmlFree(in); |
---|
1577 | } |
---|
1578 | |
---|
1579 | /** |
---|
1580 | * xmlOutputBufferClose: |
---|
1581 | * @out: a buffered output |
---|
1582 | * |
---|
1583 | * flushes and close the output I/O channel |
---|
1584 | * and free up all the associated resources |
---|
1585 | * |
---|
1586 | * Returns the number of byte written or -1 in case of error. |
---|
1587 | */ |
---|
1588 | int |
---|
1589 | xmlOutputBufferClose(xmlOutputBufferPtr out) { |
---|
1590 | int written; |
---|
1591 | int err_rc = 0; |
---|
1592 | |
---|
1593 | if (out == NULL) |
---|
1594 | return(-1); |
---|
1595 | if (out->writecallback != NULL) |
---|
1596 | xmlOutputBufferFlush(out); |
---|
1597 | if (out->closecallback != NULL) { |
---|
1598 | err_rc = out->closecallback(out->context); |
---|
1599 | } |
---|
1600 | written = out->written; |
---|
1601 | if (out->conv) { |
---|
1602 | xmlBufferFree(out->conv); |
---|
1603 | out->conv = NULL; |
---|
1604 | } |
---|
1605 | if (out->encoder != NULL) { |
---|
1606 | xmlCharEncCloseFunc(out->encoder); |
---|
1607 | } |
---|
1608 | if (out->buffer != NULL) { |
---|
1609 | xmlBufferFree(out->buffer); |
---|
1610 | out->buffer = NULL; |
---|
1611 | } |
---|
1612 | |
---|
1613 | xmlFree(out); |
---|
1614 | return( ( err_rc == 0 ) ? written : err_rc ); |
---|
1615 | } |
---|
1616 | |
---|
1617 | /** |
---|
1618 | * xmlParserInputBufferCreateFname: |
---|
1619 | * @URI: a C string containing the URI or filename |
---|
1620 | * @enc: the charset encoding if known |
---|
1621 | * |
---|
1622 | * VMS version of xmlParserInputBufferCreateFilename() |
---|
1623 | * |
---|
1624 | * Returns the new parser input or NULL |
---|
1625 | */ |
---|
1626 | /** |
---|
1627 | * xmlParserInputBufferCreateFilename: |
---|
1628 | * @URI: a C string containing the URI or filename |
---|
1629 | * @enc: the charset encoding if known |
---|
1630 | * |
---|
1631 | * Create a buffered parser input for the progressive parsing of a file |
---|
1632 | * If filename is "-' then we use stdin as the input. |
---|
1633 | * Automatic support for ZLIB/Compress compressed document is provided |
---|
1634 | * by default if found at compile-time. |
---|
1635 | * Do an encoding check if enc == XML_CHAR_ENCODING_NONE |
---|
1636 | * |
---|
1637 | * Returns the new parser input or NULL |
---|
1638 | */ |
---|
1639 | xmlParserInputBufferPtr |
---|
1640 | #ifdef VMS |
---|
1641 | xmlParserInputBufferCreateFname |
---|
1642 | #else |
---|
1643 | xmlParserInputBufferCreateFilename |
---|
1644 | #endif |
---|
1645 | (const char *URI, xmlCharEncoding enc) { |
---|
1646 | xmlParserInputBufferPtr ret; |
---|
1647 | int i = 0; |
---|
1648 | void *context = NULL; |
---|
1649 | char *unescaped; |
---|
1650 | |
---|
1651 | if (xmlInputCallbackInitialized == 0) |
---|
1652 | xmlRegisterDefaultInputCallbacks(); |
---|
1653 | |
---|
1654 | if (URI == NULL) return(NULL); |
---|
1655 | |
---|
1656 | #ifdef LIBXML_CATALOG_ENABLED |
---|
1657 | #endif |
---|
1658 | |
---|
1659 | /* |
---|
1660 | * Try to find one of the input accept method accepting that scheme |
---|
1661 | * Go in reverse to give precedence to user defined handlers. |
---|
1662 | * try with an unescaped version of the URI |
---|
1663 | */ |
---|
1664 | unescaped = xmlURIUnescapeString(URI, 0, NULL); |
---|
1665 | if (unescaped != NULL) { |
---|
1666 | for (i = xmlInputCallbackNr - 1;i >= 0;i--) { |
---|
1667 | if ((xmlInputCallbackTable[i].matchcallback != NULL) && |
---|
1668 | (xmlInputCallbackTable[i].matchcallback(unescaped) != 0)) { |
---|
1669 | context = xmlInputCallbackTable[i].opencallback(unescaped); |
---|
1670 | if (context != NULL) |
---|
1671 | break; |
---|
1672 | } |
---|
1673 | } |
---|
1674 | xmlFree(unescaped); |
---|
1675 | } |
---|
1676 | |
---|
1677 | /* |
---|
1678 | * If this failed try with a non-escaped URI this may be a strange |
---|
1679 | * filename |
---|
1680 | */ |
---|
1681 | if (context == NULL) { |
---|
1682 | for (i = xmlInputCallbackNr - 1;i >= 0;i--) { |
---|
1683 | if ((xmlInputCallbackTable[i].matchcallback != NULL) && |
---|
1684 | (xmlInputCallbackTable[i].matchcallback(URI) != 0)) { |
---|
1685 | context = xmlInputCallbackTable[i].opencallback(URI); |
---|
1686 | if (context != NULL) |
---|
1687 | break; |
---|
1688 | } |
---|
1689 | } |
---|
1690 | } |
---|
1691 | if (context == NULL) { |
---|
1692 | return(NULL); |
---|
1693 | } |
---|
1694 | |
---|
1695 | /* |
---|
1696 | * Allocate the Input buffer front-end. |
---|
1697 | */ |
---|
1698 | ret = xmlAllocParserInputBuffer(enc); |
---|
1699 | if (ret != NULL) { |
---|
1700 | ret->context = context; |
---|
1701 | ret->readcallback = xmlInputCallbackTable[i].readcallback; |
---|
1702 | ret->closecallback = xmlInputCallbackTable[i].closecallback; |
---|
1703 | } |
---|
1704 | return(ret); |
---|
1705 | } |
---|
1706 | |
---|
1707 | /** |
---|
1708 | * xmlOutputBufferCreateFilename: |
---|
1709 | * @URI: a C string containing the URI or filename |
---|
1710 | * @encoder: the encoding converter or NULL |
---|
1711 | * @compression: the compression ration (0 none, 9 max). |
---|
1712 | * |
---|
1713 | * Create a buffered output for the progressive saving of a file |
---|
1714 | * If filename is "-' then we use stdout as the output. |
---|
1715 | * Automatic support for ZLIB/Compress compressed document is provided |
---|
1716 | * by default if found at compile-time. |
---|
1717 | * TODO: currently if compression is set, the library only support |
---|
1718 | * writing to a local file. |
---|
1719 | * |
---|
1720 | * Returns the new output or NULL |
---|
1721 | */ |
---|
1722 | xmlOutputBufferPtr |
---|
1723 | xmlOutputBufferCreateFilename(const char *URI, |
---|
1724 | xmlCharEncodingHandlerPtr encoder, |
---|
1725 | int compression) { |
---|
1726 | xmlOutputBufferPtr ret; |
---|
1727 | int i = 0; |
---|
1728 | void *context = NULL; |
---|
1729 | char *unescaped; |
---|
1730 | |
---|
1731 | int is_http_uri = 0; /* Can't change if HTTP disabled */ |
---|
1732 | |
---|
1733 | if (xmlOutputCallbackInitialized == 0) |
---|
1734 | xmlRegisterDefaultOutputCallbacks(); |
---|
1735 | |
---|
1736 | if (URI == NULL) return(NULL); |
---|
1737 | |
---|
1738 | #ifdef LIBXML_HTTP_ENABLED |
---|
1739 | /* Need to prevent HTTP URI's from falling into zlib short circuit */ |
---|
1740 | |
---|
1741 | is_http_uri = xmlIOHTTPMatch( URI ); |
---|
1742 | #endif |
---|
1743 | |
---|
1744 | |
---|
1745 | /* |
---|
1746 | * Try to find one of the output accept method accepting that scheme |
---|
1747 | * Go in reverse to give precedence to user defined handlers. |
---|
1748 | * try with an unescaped version of the URI |
---|
1749 | */ |
---|
1750 | unescaped = xmlURIUnescapeString(URI, 0, NULL); |
---|
1751 | if (unescaped != NULL) { |
---|
1752 | #ifdef HAVE_ZLIB_H |
---|
1753 | if ((compression > 0) && (compression <= 9) && (is_http_uri == 0)) { |
---|
1754 | context = xmlGzfileOpenW(unescaped, compression); |
---|
1755 | if (context != NULL) { |
---|
1756 | ret = xmlAllocOutputBuffer(encoder); |
---|
1757 | if (ret != NULL) { |
---|
1758 | ret->context = context; |
---|
1759 | ret->writecallback = xmlGzfileWrite; |
---|
1760 | ret->closecallback = xmlGzfileClose; |
---|
1761 | } |
---|
1762 | xmlFree(unescaped); |
---|
1763 | return(ret); |
---|
1764 | } |
---|
1765 | } |
---|
1766 | #endif |
---|
1767 | for (i = xmlOutputCallbackNr - 1;i >= 0;i--) { |
---|
1768 | if ((xmlOutputCallbackTable[i].matchcallback != NULL) && |
---|
1769 | (xmlOutputCallbackTable[i].matchcallback(unescaped) != 0)) { |
---|
1770 | #if defined(LIBXML_HTTP_ENABLED) && defined(HAVE_ZLIB_H) |
---|
1771 | /* Need to pass compression parameter into HTTP open calls */ |
---|
1772 | if (xmlOutputCallbackTable[i].matchcallback == xmlIOHTTPMatch) |
---|
1773 | context = xmlIOHTTPOpenW(unescaped, compression); |
---|
1774 | else |
---|
1775 | #endif |
---|
1776 | context = xmlOutputCallbackTable[i].opencallback(unescaped); |
---|
1777 | if (context != NULL) |
---|
1778 | break; |
---|
1779 | } |
---|
1780 | } |
---|
1781 | xmlFree(unescaped); |
---|
1782 | } |
---|
1783 | |
---|
1784 | /* |
---|
1785 | * If this failed try with a non-escaped URI this may be a strange |
---|
1786 | * filename |
---|
1787 | */ |
---|
1788 | if (context == NULL) { |
---|
1789 | #ifdef HAVE_ZLIB_H |
---|
1790 | if ((compression > 0) && (compression <= 9) && (is_http_uri == 0)) { |
---|
1791 | context = xmlGzfileOpenW(URI, compression); |
---|
1792 | if (context != NULL) { |
---|
1793 | ret = xmlAllocOutputBuffer(encoder); |
---|
1794 | if (ret != NULL) { |
---|
1795 | ret->context = context; |
---|
1796 | ret->writecallback = xmlGzfileWrite; |
---|
1797 | ret->closecallback = xmlGzfileClose; |
---|
1798 | } |
---|
1799 | return(ret); |
---|
1800 | } |
---|
1801 | } |
---|
1802 | #endif |
---|
1803 | for (i = xmlOutputCallbackNr - 1;i >= 0;i--) { |
---|
1804 | if ((xmlOutputCallbackTable[i].matchcallback != NULL) && |
---|
1805 | (xmlOutputCallbackTable[i].matchcallback(URI) != 0)) { |
---|
1806 | context = xmlOutputCallbackTable[i].opencallback(URI); |
---|
1807 | #if defined(LIBXML_HTTP_ENABLED) && defined(HAVE_ZLIB_H) |
---|
1808 | /* Need to pass compression parameter into HTTP open calls */ |
---|
1809 | if (xmlOutputCallbackTable[i].matchcallback == xmlIOHTTPMatch) |
---|
1810 | context = xmlIOHTTPOpenW(URI, compression); |
---|
1811 | else |
---|
1812 | #endif |
---|
1813 | context = xmlOutputCallbackTable[i].opencallback(URI); |
---|
1814 | if (context != NULL) |
---|
1815 | break; |
---|
1816 | } |
---|
1817 | } |
---|
1818 | } |
---|
1819 | |
---|
1820 | if (context == NULL) { |
---|
1821 | return(NULL); |
---|
1822 | } |
---|
1823 | |
---|
1824 | /* |
---|
1825 | * Allocate the Output buffer front-end. |
---|
1826 | */ |
---|
1827 | ret = xmlAllocOutputBuffer(encoder); |
---|
1828 | if (ret != NULL) { |
---|
1829 | ret->context = context; |
---|
1830 | ret->writecallback = xmlOutputCallbackTable[i].writecallback; |
---|
1831 | ret->closecallback = xmlOutputCallbackTable[i].closecallback; |
---|
1832 | } |
---|
1833 | return(ret); |
---|
1834 | } |
---|
1835 | |
---|
1836 | /** |
---|
1837 | * xmlParserInputBufferCreateFile: |
---|
1838 | * @file: a FILE* |
---|
1839 | * @enc: the charset encoding if known |
---|
1840 | * |
---|
1841 | * Create a buffered parser input for the progressive parsing of a FILE * |
---|
1842 | * buffered C I/O |
---|
1843 | * |
---|
1844 | * Returns the new parser input or NULL |
---|
1845 | */ |
---|
1846 | xmlParserInputBufferPtr |
---|
1847 | xmlParserInputBufferCreateFile(FILE *file, xmlCharEncoding enc) { |
---|
1848 | xmlParserInputBufferPtr ret; |
---|
1849 | |
---|
1850 | if (xmlInputCallbackInitialized == 0) |
---|
1851 | xmlRegisterDefaultInputCallbacks(); |
---|
1852 | |
---|
1853 | if (file == NULL) return(NULL); |
---|
1854 | |
---|
1855 | ret = xmlAllocParserInputBuffer(enc); |
---|
1856 | if (ret != NULL) { |
---|
1857 | ret->context = file; |
---|
1858 | ret->readcallback = xmlFileRead; |
---|
1859 | ret->closecallback = xmlFileFlush; |
---|
1860 | } |
---|
1861 | |
---|
1862 | return(ret); |
---|
1863 | } |
---|
1864 | |
---|
1865 | /** |
---|
1866 | * xmlOutputBufferCreateFile: |
---|
1867 | * @file: a FILE* |
---|
1868 | * @encoder: the encoding converter or NULL |
---|
1869 | * |
---|
1870 | * Create a buffered output for the progressive saving to a FILE * |
---|
1871 | * buffered C I/O |
---|
1872 | * |
---|
1873 | * Returns the new parser output or NULL |
---|
1874 | */ |
---|
1875 | xmlOutputBufferPtr |
---|
1876 | xmlOutputBufferCreateFile(FILE *file, xmlCharEncodingHandlerPtr encoder) { |
---|
1877 | xmlOutputBufferPtr ret; |
---|
1878 | |
---|
1879 | if (xmlOutputCallbackInitialized == 0) |
---|
1880 | xmlRegisterDefaultOutputCallbacks(); |
---|
1881 | |
---|
1882 | if (file == NULL) return(NULL); |
---|
1883 | |
---|
1884 | ret = xmlAllocOutputBuffer(encoder); |
---|
1885 | if (ret != NULL) { |
---|
1886 | ret->context = file; |
---|
1887 | ret->writecallback = xmlFileWrite; |
---|
1888 | ret->closecallback = xmlFileFlush; |
---|
1889 | } |
---|
1890 | |
---|
1891 | return(ret); |
---|
1892 | } |
---|
1893 | |
---|
1894 | /** |
---|
1895 | * xmlParserInputBufferCreateFd: |
---|
1896 | * @fd: a file descriptor number |
---|
1897 | * @enc: the charset encoding if known |
---|
1898 | * |
---|
1899 | * Create a buffered parser input for the progressive parsing for the input |
---|
1900 | * from a file descriptor |
---|
1901 | * |
---|
1902 | * Returns the new parser input or NULL |
---|
1903 | */ |
---|
1904 | xmlParserInputBufferPtr |
---|
1905 | xmlParserInputBufferCreateFd(int fd, xmlCharEncoding enc) { |
---|
1906 | xmlParserInputBufferPtr ret; |
---|
1907 | |
---|
1908 | if (fd < 0) return(NULL); |
---|
1909 | |
---|
1910 | ret = xmlAllocParserInputBuffer(enc); |
---|
1911 | if (ret != NULL) { |
---|
1912 | ret->context = (void *) (long) fd; |
---|
1913 | ret->readcallback = xmlFdRead; |
---|
1914 | ret->closecallback = xmlFdClose; |
---|
1915 | } |
---|
1916 | |
---|
1917 | return(ret); |
---|
1918 | } |
---|
1919 | |
---|
1920 | /** |
---|
1921 | * xmlParserInputBufferCreateMem: |
---|
1922 | * @mem: the memory input |
---|
1923 | * @size: the length of the memory block |
---|
1924 | * @enc: the charset encoding if known |
---|
1925 | * |
---|
1926 | * Create a buffered parser input for the progressive parsing for the input |
---|
1927 | * from a memory area. |
---|
1928 | * |
---|
1929 | * Returns the new parser input or NULL |
---|
1930 | */ |
---|
1931 | xmlParserInputBufferPtr |
---|
1932 | xmlParserInputBufferCreateMem(const char *mem, int size, xmlCharEncoding enc) { |
---|
1933 | xmlParserInputBufferPtr ret; |
---|
1934 | |
---|
1935 | if (size <= 0) return(NULL); |
---|
1936 | if (mem == NULL) return(NULL); |
---|
1937 | |
---|
1938 | ret = xmlAllocParserInputBuffer(enc); |
---|
1939 | if (ret != NULL) { |
---|
1940 | ret->context = (void *) mem; |
---|
1941 | ret->readcallback = (xmlInputReadCallback) xmlNop; |
---|
1942 | ret->closecallback = NULL; |
---|
1943 | xmlBufferAdd(ret->buffer, (const xmlChar *) mem, size); |
---|
1944 | } |
---|
1945 | |
---|
1946 | return(ret); |
---|
1947 | } |
---|
1948 | |
---|
1949 | /** |
---|
1950 | * xmlOutputBufferCreateFd: |
---|
1951 | * @fd: a file descriptor number |
---|
1952 | * @encoder: the encoding converter or NULL |
---|
1953 | * |
---|
1954 | * Create a buffered output for the progressive saving |
---|
1955 | * to a file descriptor |
---|
1956 | * |
---|
1957 | * Returns the new parser output or NULL |
---|
1958 | */ |
---|
1959 | xmlOutputBufferPtr |
---|
1960 | xmlOutputBufferCreateFd(int fd, xmlCharEncodingHandlerPtr encoder) { |
---|
1961 | xmlOutputBufferPtr ret; |
---|
1962 | |
---|
1963 | if (fd < 0) return(NULL); |
---|
1964 | |
---|
1965 | ret = xmlAllocOutputBuffer(encoder); |
---|
1966 | if (ret != NULL) { |
---|
1967 | ret->context = (void *) (long) fd; |
---|
1968 | ret->writecallback = xmlFdWrite; |
---|
1969 | ret->closecallback = NULL; |
---|
1970 | } |
---|
1971 | |
---|
1972 | return(ret); |
---|
1973 | } |
---|
1974 | |
---|
1975 | /** |
---|
1976 | * xmlParserInputBufferCreateIO: |
---|
1977 | * @ioread: an I/O read function |
---|
1978 | * @ioclose: an I/O close function |
---|
1979 | * @ioctx: an I/O handler |
---|
1980 | * @enc: the charset encoding if known |
---|
1981 | * |
---|
1982 | * Create a buffered parser input for the progressive parsing for the input |
---|
1983 | * from an I/O handler |
---|
1984 | * |
---|
1985 | * Returns the new parser input or NULL |
---|
1986 | */ |
---|
1987 | xmlParserInputBufferPtr |
---|
1988 | xmlParserInputBufferCreateIO(xmlInputReadCallback ioread, |
---|
1989 | xmlInputCloseCallback ioclose, void *ioctx, xmlCharEncoding enc) { |
---|
1990 | xmlParserInputBufferPtr ret; |
---|
1991 | |
---|
1992 | if (ioread == NULL) return(NULL); |
---|
1993 | |
---|
1994 | ret = xmlAllocParserInputBuffer(enc); |
---|
1995 | if (ret != NULL) { |
---|
1996 | ret->context = (void *) ioctx; |
---|
1997 | ret->readcallback = ioread; |
---|
1998 | ret->closecallback = ioclose; |
---|
1999 | } |
---|
2000 | |
---|
2001 | return(ret); |
---|
2002 | } |
---|
2003 | |
---|
2004 | /** |
---|
2005 | * xmlOutputBufferCreateIO: |
---|
2006 | * @iowrite: an I/O write function |
---|
2007 | * @ioclose: an I/O close function |
---|
2008 | * @ioctx: an I/O handler |
---|
2009 | * @encoder: the charset encoding if known |
---|
2010 | * |
---|
2011 | * Create a buffered output for the progressive saving |
---|
2012 | * to an I/O handler |
---|
2013 | * |
---|
2014 | * Returns the new parser output or NULL |
---|
2015 | */ |
---|
2016 | xmlOutputBufferPtr |
---|
2017 | xmlOutputBufferCreateIO(xmlOutputWriteCallback iowrite, |
---|
2018 | xmlOutputCloseCallback ioclose, void *ioctx, |
---|
2019 | xmlCharEncodingHandlerPtr encoder) { |
---|
2020 | xmlOutputBufferPtr ret; |
---|
2021 | |
---|
2022 | if (iowrite == NULL) return(NULL); |
---|
2023 | |
---|
2024 | ret = xmlAllocOutputBuffer(encoder); |
---|
2025 | if (ret != NULL) { |
---|
2026 | ret->context = (void *) ioctx; |
---|
2027 | ret->writecallback = iowrite; |
---|
2028 | ret->closecallback = ioclose; |
---|
2029 | } |
---|
2030 | |
---|
2031 | return(ret); |
---|
2032 | } |
---|
2033 | |
---|
2034 | /** |
---|
2035 | * xmlParserInputBufferPush: |
---|
2036 | * @in: a buffered parser input |
---|
2037 | * @len: the size in bytes of the array. |
---|
2038 | * @buf: an char array |
---|
2039 | * |
---|
2040 | * Push the content of the arry in the input buffer |
---|
2041 | * This routine handle the I18N transcoding to internal UTF-8 |
---|
2042 | * This is used when operating the parser in progressive (push) mode. |
---|
2043 | * |
---|
2044 | * Returns the number of chars read and stored in the buffer, or -1 |
---|
2045 | * in case of error. |
---|
2046 | */ |
---|
2047 | int |
---|
2048 | xmlParserInputBufferPush(xmlParserInputBufferPtr in, |
---|
2049 | int len, const char *buf) { |
---|
2050 | int nbchars = 0; |
---|
2051 | |
---|
2052 | if (len < 0) return(0); |
---|
2053 | if (in->encoder != NULL) { |
---|
2054 | /* |
---|
2055 | * Store the data in the incoming raw buffer |
---|
2056 | */ |
---|
2057 | if (in->raw == NULL) { |
---|
2058 | in->raw = xmlBufferCreate(); |
---|
2059 | } |
---|
2060 | xmlBufferAdd(in->raw, (const xmlChar *) buf, len); |
---|
2061 | |
---|
2062 | /* |
---|
2063 | * convert as much as possible to the parser reading buffer. |
---|
2064 | */ |
---|
2065 | nbchars = xmlCharEncInFunc(in->encoder, in->buffer, in->raw); |
---|
2066 | if (nbchars < 0) { |
---|
2067 | xmlGenericError(xmlGenericErrorContext, |
---|
2068 | "xmlParserInputBufferPush: encoder error\n"); |
---|
2069 | return(-1); |
---|
2070 | } |
---|
2071 | } else { |
---|
2072 | nbchars = len; |
---|
2073 | xmlBufferAdd(in->buffer, (xmlChar *) buf, nbchars); |
---|
2074 | } |
---|
2075 | #ifdef DEBUG_INPUT |
---|
2076 | xmlGenericError(xmlGenericErrorContext, |
---|
2077 | "I/O: pushed %d chars, buffer %d/%d\n", |
---|
2078 | nbchars, in->buffer->use, in->buffer->size); |
---|
2079 | #endif |
---|
2080 | return(nbchars); |
---|
2081 | } |
---|
2082 | |
---|
2083 | /** |
---|
2084 | * xmlParserInputBufferGrow: |
---|
2085 | * @in: a buffered parser input |
---|
2086 | * @len: indicative value of the amount of chars to read |
---|
2087 | * |
---|
2088 | * Grow up the content of the input buffer, the old data are preserved |
---|
2089 | * This routine handle the I18N transcoding to internal UTF-8 |
---|
2090 | * This routine is used when operating the parser in normal (pull) mode |
---|
2091 | * |
---|
2092 | * TODO: one should be able to remove one extra copy by copying directly |
---|
2093 | * onto in->buffer or in->raw |
---|
2094 | * |
---|
2095 | * Returns the number of chars read and stored in the buffer, or -1 |
---|
2096 | * in case of error. |
---|
2097 | */ |
---|
2098 | int |
---|
2099 | xmlParserInputBufferGrow(xmlParserInputBufferPtr in, int len) { |
---|
2100 | char *buffer = NULL; |
---|
2101 | int res = 0; |
---|
2102 | int nbchars = 0; |
---|
2103 | int buffree; |
---|
2104 | |
---|
2105 | if ((len <= MINLEN) && (len != 4)) |
---|
2106 | len = MINLEN; |
---|
2107 | buffree = in->buffer->size - in->buffer->use; |
---|
2108 | if (buffree <= 0) { |
---|
2109 | xmlGenericError(xmlGenericErrorContext, |
---|
2110 | "xmlParserInputBufferGrow : buffer full !\n"); |
---|
2111 | return(0); |
---|
2112 | } |
---|
2113 | if (len > buffree) |
---|
2114 | len = buffree; |
---|
2115 | |
---|
2116 | buffer = (char *) xmlMalloc((len + 1) * sizeof(char)); |
---|
2117 | if (buffer == NULL) { |
---|
2118 | xmlGenericError(xmlGenericErrorContext, |
---|
2119 | "xmlParserInputBufferGrow : out of memory !\n"); |
---|
2120 | return(-1); |
---|
2121 | } |
---|
2122 | |
---|
2123 | /* |
---|
2124 | * Call the read method for this I/O type. |
---|
2125 | */ |
---|
2126 | if (in->readcallback != NULL) { |
---|
2127 | res = in->readcallback(in->context, &buffer[0], len); |
---|
2128 | } else { |
---|
2129 | xmlGenericError(xmlGenericErrorContext, |
---|
2130 | "xmlParserInputBufferGrow : no input !\n"); |
---|
2131 | xmlFree(buffer); |
---|
2132 | return(-1); |
---|
2133 | } |
---|
2134 | if (res < 0) { |
---|
2135 | perror ("read error"); |
---|
2136 | xmlFree(buffer); |
---|
2137 | return(-1); |
---|
2138 | } |
---|
2139 | len = res; |
---|
2140 | if (in->encoder != NULL) { |
---|
2141 | /* |
---|
2142 | * Store the data in the incoming raw buffer |
---|
2143 | */ |
---|
2144 | if (in->raw == NULL) { |
---|
2145 | in->raw = xmlBufferCreate(); |
---|
2146 | } |
---|
2147 | xmlBufferAdd(in->raw, (const xmlChar *) buffer, len); |
---|
2148 | |
---|
2149 | /* |
---|
2150 | * convert as much as possible to the parser reading buffer. |
---|
2151 | */ |
---|
2152 | nbchars = xmlCharEncInFunc(in->encoder, in->buffer, in->raw); |
---|
2153 | if (nbchars < 0) { |
---|
2154 | xmlGenericError(xmlGenericErrorContext, |
---|
2155 | "xmlParserInputBufferGrow: encoder error\n"); |
---|
2156 | return(-1); |
---|
2157 | } |
---|
2158 | } else { |
---|
2159 | nbchars = len; |
---|
2160 | buffer[nbchars] = 0; |
---|
2161 | xmlBufferAdd(in->buffer, (xmlChar *) buffer, nbchars); |
---|
2162 | } |
---|
2163 | #ifdef DEBUG_INPUT |
---|
2164 | xmlGenericError(xmlGenericErrorContext, |
---|
2165 | "I/O: read %d chars, buffer %d/%d\n", |
---|
2166 | nbchars, in->buffer->use, in->buffer->size); |
---|
2167 | #endif |
---|
2168 | xmlFree(buffer); |
---|
2169 | return(nbchars); |
---|
2170 | } |
---|
2171 | |
---|
2172 | /** |
---|
2173 | * xmlParserInputBufferRead: |
---|
2174 | * @in: a buffered parser input |
---|
2175 | * @len: indicative value of the amount of chars to read |
---|
2176 | * |
---|
2177 | * Refresh the content of the input buffer, the old data are considered |
---|
2178 | * consumed |
---|
2179 | * This routine handle the I18N transcoding to internal UTF-8 |
---|
2180 | * |
---|
2181 | * Returns the number of chars read and stored in the buffer, or -1 |
---|
2182 | * in case of error. |
---|
2183 | */ |
---|
2184 | int |
---|
2185 | xmlParserInputBufferRead(xmlParserInputBufferPtr in, int len) { |
---|
2186 | /* xmlBufferEmpty(in->buffer); */ |
---|
2187 | if (in->readcallback != NULL) |
---|
2188 | return(xmlParserInputBufferGrow(in, len)); |
---|
2189 | else |
---|
2190 | return(-1); |
---|
2191 | } |
---|
2192 | |
---|
2193 | /** |
---|
2194 | * xmlOutputBufferWrite: |
---|
2195 | * @out: a buffered parser output |
---|
2196 | * @len: the size in bytes of the array. |
---|
2197 | * @buf: an char array |
---|
2198 | * |
---|
2199 | * Write the content of the array in the output I/O buffer |
---|
2200 | * This routine handle the I18N transcoding from internal UTF-8 |
---|
2201 | * The buffer is lossless, i.e. will store in case of partial |
---|
2202 | * or delayed writes. |
---|
2203 | * |
---|
2204 | * Returns the number of chars immediately written, or -1 |
---|
2205 | * in case of error. |
---|
2206 | */ |
---|
2207 | int |
---|
2208 | xmlOutputBufferWrite(xmlOutputBufferPtr out, int len, const char *buf) { |
---|
2209 | int nbchars = 0; /* number of chars to output to I/O */ |
---|
2210 | int ret; /* return from function call */ |
---|
2211 | int written = 0; /* number of char written to I/O so far */ |
---|
2212 | int chunk; /* number of byte curreent processed from buf */ |
---|
2213 | |
---|
2214 | if (len < 0) return(0); |
---|
2215 | |
---|
2216 | do { |
---|
2217 | chunk = len; |
---|
2218 | if (chunk > 4 * MINLEN) |
---|
2219 | chunk = 4 * MINLEN; |
---|
2220 | |
---|
2221 | /* |
---|
2222 | * first handle encoding stuff. |
---|
2223 | */ |
---|
2224 | if (out->encoder != NULL) { |
---|
2225 | /* |
---|
2226 | * Store the data in the incoming raw buffer |
---|
2227 | */ |
---|
2228 | if (out->conv == NULL) { |
---|
2229 | out->conv = xmlBufferCreate(); |
---|
2230 | } |
---|
2231 | xmlBufferAdd(out->buffer, (const xmlChar *) buf, chunk); |
---|
2232 | |
---|
2233 | if ((out->buffer->use < MINLEN) && (chunk == len)) |
---|
2234 | goto done; |
---|
2235 | |
---|
2236 | /* |
---|
2237 | * convert as much as possible to the parser reading buffer. |
---|
2238 | */ |
---|
2239 | ret = xmlCharEncOutFunc(out->encoder, out->conv, out->buffer); |
---|
2240 | if (ret < 0) { |
---|
2241 | xmlGenericError(xmlGenericErrorContext, |
---|
2242 | "xmlOutputBufferWrite: encoder error\n"); |
---|
2243 | return(-1); |
---|
2244 | } |
---|
2245 | nbchars = out->conv->use; |
---|
2246 | } else { |
---|
2247 | xmlBufferAdd(out->buffer, (const xmlChar *) buf, chunk); |
---|
2248 | nbchars = out->buffer->use; |
---|
2249 | } |
---|
2250 | buf += chunk; |
---|
2251 | len -= chunk; |
---|
2252 | |
---|
2253 | if ((nbchars < MINLEN) && (len <= 0)) |
---|
2254 | goto done; |
---|
2255 | |
---|
2256 | if (out->writecallback) { |
---|
2257 | /* |
---|
2258 | * second write the stuff to the I/O channel |
---|
2259 | */ |
---|
2260 | if (out->encoder != NULL) { |
---|
2261 | ret = out->writecallback(out->context, |
---|
2262 | (const char *)out->conv->content, nbchars); |
---|
2263 | if (ret >= 0) |
---|
2264 | xmlBufferShrink(out->conv, ret); |
---|
2265 | } else { |
---|
2266 | ret = out->writecallback(out->context, |
---|
2267 | (const char *)out->buffer->content, nbchars); |
---|
2268 | if (ret >= 0) |
---|
2269 | xmlBufferShrink(out->buffer, ret); |
---|
2270 | } |
---|
2271 | if (ret < 0) { |
---|
2272 | xmlGenericError(xmlGenericErrorContext, |
---|
2273 | "I/O: error %d writing %d bytes\n", ret, nbchars); |
---|
2274 | return(ret); |
---|
2275 | } |
---|
2276 | out->written += ret; |
---|
2277 | } |
---|
2278 | written += nbchars; |
---|
2279 | } while (len > 0); |
---|
2280 | |
---|
2281 | done: |
---|
2282 | #ifdef DEBUG_INPUT |
---|
2283 | xmlGenericError(xmlGenericErrorContext, |
---|
2284 | "I/O: wrote %d chars\n", written); |
---|
2285 | #endif |
---|
2286 | return(written); |
---|
2287 | } |
---|
2288 | |
---|
2289 | /** |
---|
2290 | * xmlOutputBufferWriteString: |
---|
2291 | * @out: a buffered parser output |
---|
2292 | * @str: a zero terminated C string |
---|
2293 | * |
---|
2294 | * Write the content of the string in the output I/O buffer |
---|
2295 | * This routine handle the I18N transcoding from internal UTF-8 |
---|
2296 | * The buffer is lossless, i.e. will store in case of partial |
---|
2297 | * or delayed writes. |
---|
2298 | * |
---|
2299 | * Returns the number of chars immediately written, or -1 |
---|
2300 | * in case of error. |
---|
2301 | */ |
---|
2302 | int |
---|
2303 | xmlOutputBufferWriteString(xmlOutputBufferPtr out, const char *str) { |
---|
2304 | int len; |
---|
2305 | |
---|
2306 | if (str == NULL) |
---|
2307 | return(-1); |
---|
2308 | len = strlen(str); |
---|
2309 | |
---|
2310 | if (len > 0) |
---|
2311 | return(xmlOutputBufferWrite(out, len, str)); |
---|
2312 | return(len); |
---|
2313 | } |
---|
2314 | |
---|
2315 | /** |
---|
2316 | * xmlOutputBufferFlush: |
---|
2317 | * @out: a buffered output |
---|
2318 | * |
---|
2319 | * flushes the output I/O channel |
---|
2320 | * |
---|
2321 | * Returns the number of byte written or -1 in case of error. |
---|
2322 | */ |
---|
2323 | int |
---|
2324 | xmlOutputBufferFlush(xmlOutputBufferPtr out) { |
---|
2325 | int nbchars = 0, ret = 0; |
---|
2326 | |
---|
2327 | /* |
---|
2328 | * first handle encoding stuff. |
---|
2329 | */ |
---|
2330 | if ((out->conv != NULL) && (out->encoder != NULL)) { |
---|
2331 | /* |
---|
2332 | * convert as much as possible to the parser reading buffer. |
---|
2333 | */ |
---|
2334 | nbchars = xmlCharEncOutFunc(out->encoder, out->conv, out->buffer); |
---|
2335 | if (nbchars < 0) { |
---|
2336 | xmlGenericError(xmlGenericErrorContext, |
---|
2337 | "xmlOutputBufferFlush: encoder error\n"); |
---|
2338 | return(-1); |
---|
2339 | } |
---|
2340 | } |
---|
2341 | |
---|
2342 | /* |
---|
2343 | * second flush the stuff to the I/O channel |
---|
2344 | */ |
---|
2345 | if ((out->conv != NULL) && (out->encoder != NULL) && |
---|
2346 | (out->writecallback != NULL)) { |
---|
2347 | ret = out->writecallback(out->context, |
---|
2348 | (const char *)out->conv->content, out->conv->use); |
---|
2349 | if (ret >= 0) |
---|
2350 | xmlBufferShrink(out->conv, ret); |
---|
2351 | } else if (out->writecallback != NULL) { |
---|
2352 | ret = out->writecallback(out->context, |
---|
2353 | (const char *)out->buffer->content, out->buffer->use); |
---|
2354 | if (ret >= 0) |
---|
2355 | xmlBufferShrink(out->buffer, ret); |
---|
2356 | } |
---|
2357 | if (ret < 0) { |
---|
2358 | xmlGenericError(xmlGenericErrorContext, |
---|
2359 | "I/O: error %d flushing %d bytes\n", ret, nbchars); |
---|
2360 | return(ret); |
---|
2361 | } |
---|
2362 | out->written += ret; |
---|
2363 | |
---|
2364 | #ifdef DEBUG_INPUT |
---|
2365 | xmlGenericError(xmlGenericErrorContext, |
---|
2366 | "I/O: flushed %d chars\n", ret); |
---|
2367 | #endif |
---|
2368 | return(ret); |
---|
2369 | } |
---|
2370 | |
---|
2371 | /** |
---|
2372 | * xmlParserGetDirectory: |
---|
2373 | * @filename: the path to a file |
---|
2374 | * |
---|
2375 | * lookup the directory for that file |
---|
2376 | * |
---|
2377 | * Returns a new allocated string containing the directory, or NULL. |
---|
2378 | */ |
---|
2379 | char * |
---|
2380 | xmlParserGetDirectory(const char *filename) { |
---|
2381 | char *ret = NULL; |
---|
2382 | char dir[1024]; |
---|
2383 | char *cur; |
---|
2384 | char sep = '/'; |
---|
2385 | |
---|
2386 | if (xmlInputCallbackInitialized == 0) |
---|
2387 | xmlRegisterDefaultInputCallbacks(); |
---|
2388 | |
---|
2389 | if (filename == NULL) return(NULL); |
---|
2390 | #if defined(WIN32) && !defined(__CYGWIN__) |
---|
2391 | sep = '\\'; |
---|
2392 | #endif |
---|
2393 | |
---|
2394 | strncpy(dir, filename, 1023); |
---|
2395 | dir[1023] = 0; |
---|
2396 | cur = &dir[strlen(dir)]; |
---|
2397 | while (cur > dir) { |
---|
2398 | if (*cur == sep) break; |
---|
2399 | cur --; |
---|
2400 | } |
---|
2401 | if (*cur == sep) { |
---|
2402 | if (cur == dir) dir[1] = 0; |
---|
2403 | else *cur = 0; |
---|
2404 | ret = xmlMemStrdup(dir); |
---|
2405 | } else { |
---|
2406 | if (getcwd(dir, 1024) != NULL) { |
---|
2407 | dir[1023] = 0; |
---|
2408 | ret = xmlMemStrdup(dir); |
---|
2409 | } |
---|
2410 | } |
---|
2411 | return(ret); |
---|
2412 | } |
---|
2413 | |
---|
2414 | /**************************************************************** |
---|
2415 | * * |
---|
2416 | * External entities loading * |
---|
2417 | * * |
---|
2418 | ****************************************************************/ |
---|
2419 | |
---|
2420 | #ifdef LIBXML_CATALOG_ENABLED |
---|
2421 | static int xmlSysIDExists(const char *URL) { |
---|
2422 | #ifdef HAVE_STAT |
---|
2423 | int ret; |
---|
2424 | struct stat info; |
---|
2425 | const char *path; |
---|
2426 | |
---|
2427 | if (URL == NULL) |
---|
2428 | return(0); |
---|
2429 | |
---|
2430 | if (!strncmp(URL, "file://localhost", 16)) |
---|
2431 | path = &URL[16]; |
---|
2432 | else if (!strncmp(URL, "file:///", 8)) { |
---|
2433 | #if defined (_WIN32) && !defined(__CYGWIN__) |
---|
2434 | path = &URL[8]; |
---|
2435 | #else |
---|
2436 | path = &URL[7]; |
---|
2437 | #endif |
---|
2438 | } else |
---|
2439 | path = URL; |
---|
2440 | ret = stat(path, &info); |
---|
2441 | if (ret == 0) |
---|
2442 | return(1); |
---|
2443 | #endif |
---|
2444 | return(0); |
---|
2445 | } |
---|
2446 | #endif |
---|
2447 | |
---|
2448 | /** |
---|
2449 | * xmlDefaultExternalEntityLoader: |
---|
2450 | * @URL: the URL for the entity to load |
---|
2451 | * @ID: the System ID for the entity to load |
---|
2452 | * @ctxt: the context in which the entity is called or NULL |
---|
2453 | * |
---|
2454 | * By default we don't load external entitites, yet. |
---|
2455 | * |
---|
2456 | * Returns a new allocated xmlParserInputPtr, or NULL. |
---|
2457 | */ |
---|
2458 | static |
---|
2459 | xmlParserInputPtr |
---|
2460 | xmlDefaultExternalEntityLoader(const char *URL, const char *ID, |
---|
2461 | xmlParserCtxtPtr ctxt) { |
---|
2462 | xmlParserInputPtr ret = NULL; |
---|
2463 | xmlChar *resource = NULL; |
---|
2464 | #ifdef LIBXML_CATALOG_ENABLED |
---|
2465 | xmlCatalogAllow pref; |
---|
2466 | #endif |
---|
2467 | |
---|
2468 | #ifdef DEBUG_EXTERNAL_ENTITIES |
---|
2469 | xmlGenericError(xmlGenericErrorContext, |
---|
2470 | "xmlDefaultExternalEntityLoader(%s, xxx)\n", URL); |
---|
2471 | #endif |
---|
2472 | #ifdef LIBXML_CATALOG_ENABLED |
---|
2473 | /* |
---|
2474 | * If the resource doesn't exists as a file, |
---|
2475 | * try to load it from the resource pointed in the catalogs |
---|
2476 | */ |
---|
2477 | pref = xmlCatalogGetDefaults(); |
---|
2478 | |
---|
2479 | if ((pref != XML_CATA_ALLOW_NONE) && (!xmlSysIDExists(URL))) { |
---|
2480 | /* |
---|
2481 | * Do a local lookup |
---|
2482 | */ |
---|
2483 | if ((ctxt->catalogs != NULL) && |
---|
2484 | ((pref == XML_CATA_ALLOW_ALL) || |
---|
2485 | (pref == XML_CATA_ALLOW_DOCUMENT))) { |
---|
2486 | resource = xmlCatalogLocalResolve(ctxt->catalogs, |
---|
2487 | (const xmlChar *)ID, |
---|
2488 | (const xmlChar *)URL); |
---|
2489 | } |
---|
2490 | /* |
---|
2491 | * Try a global lookup |
---|
2492 | */ |
---|
2493 | if ((resource == NULL) && |
---|
2494 | ((pref == XML_CATA_ALLOW_ALL) || |
---|
2495 | (pref == XML_CATA_ALLOW_GLOBAL))) { |
---|
2496 | resource = xmlCatalogResolve((const xmlChar *)ID, |
---|
2497 | (const xmlChar *)URL); |
---|
2498 | } |
---|
2499 | if ((resource == NULL) && (URL != NULL)) |
---|
2500 | resource = xmlStrdup((const xmlChar *) URL); |
---|
2501 | |
---|
2502 | /* |
---|
2503 | * TODO: do an URI lookup on the reference |
---|
2504 | */ |
---|
2505 | if ((resource != NULL) && (!xmlSysIDExists((const char *)resource))) { |
---|
2506 | xmlChar *tmp = NULL; |
---|
2507 | |
---|
2508 | if ((ctxt->catalogs != NULL) && |
---|
2509 | ((pref == XML_CATA_ALLOW_ALL) || |
---|
2510 | (pref == XML_CATA_ALLOW_DOCUMENT))) { |
---|
2511 | tmp = xmlCatalogLocalResolveURI(ctxt->catalogs, resource); |
---|
2512 | } |
---|
2513 | if ((tmp == NULL) && |
---|
2514 | ((pref == XML_CATA_ALLOW_ALL) || |
---|
2515 | (pref == XML_CATA_ALLOW_GLOBAL))) { |
---|
2516 | tmp = xmlCatalogResolveURI(resource); |
---|
2517 | } |
---|
2518 | |
---|
2519 | if (tmp != NULL) { |
---|
2520 | xmlFree(resource); |
---|
2521 | resource = tmp; |
---|
2522 | } |
---|
2523 | } |
---|
2524 | } |
---|
2525 | #endif |
---|
2526 | |
---|
2527 | if (resource == NULL) |
---|
2528 | resource = (xmlChar *) URL; |
---|
2529 | |
---|
2530 | if (resource == NULL) { |
---|
2531 | if ((ctxt->validate) && (ctxt->sax != NULL) && |
---|
2532 | (ctxt->sax->error != NULL)) |
---|
2533 | ctxt->sax->error(ctxt, |
---|
2534 | "failed to load external entity \"%s\"\n", ID); |
---|
2535 | else if ((ctxt->sax != NULL) && (ctxt->sax->warning != NULL)) |
---|
2536 | ctxt->sax->warning(ctxt, |
---|
2537 | "failed to load external entity \"%s\"\n", ID); |
---|
2538 | return(NULL); |
---|
2539 | } |
---|
2540 | ret = xmlNewInputFromFile(ctxt, (const char *)resource); |
---|
2541 | if (ret == NULL) { |
---|
2542 | if ((ctxt->validate) && (ctxt->sax != NULL) && |
---|
2543 | (ctxt->sax->error != NULL)) |
---|
2544 | ctxt->sax->error(ctxt, |
---|
2545 | "failed to load external entity \"%s\"\n", resource); |
---|
2546 | else if ((ctxt->sax != NULL) && (ctxt->sax->warning != NULL)) |
---|
2547 | ctxt->sax->warning(ctxt, |
---|
2548 | "failed to load external entity \"%s\"\n", resource); |
---|
2549 | } |
---|
2550 | if ((resource != NULL) && (resource != (xmlChar *) URL)) |
---|
2551 | xmlFree(resource); |
---|
2552 | return(ret); |
---|
2553 | } |
---|
2554 | |
---|
2555 | static xmlExternalEntityLoader xmlCurrentExternalEntityLoader = |
---|
2556 | xmlDefaultExternalEntityLoader; |
---|
2557 | |
---|
2558 | /** |
---|
2559 | * xmlSetExternalEntityLoader: |
---|
2560 | * @f: the new entity resolver function |
---|
2561 | * |
---|
2562 | * Changes the defaultexternal entity resolver function for the application |
---|
2563 | */ |
---|
2564 | void |
---|
2565 | xmlSetExternalEntityLoader(xmlExternalEntityLoader f) { |
---|
2566 | xmlCurrentExternalEntityLoader = f; |
---|
2567 | } |
---|
2568 | |
---|
2569 | /** |
---|
2570 | * xmlGetExternalEntityLoader: |
---|
2571 | * |
---|
2572 | * Get the default external entity resolver function for the application |
---|
2573 | * |
---|
2574 | * Returns the xmlExternalEntityLoader function pointer |
---|
2575 | */ |
---|
2576 | xmlExternalEntityLoader |
---|
2577 | xmlGetExternalEntityLoader(void) { |
---|
2578 | return(xmlCurrentExternalEntityLoader); |
---|
2579 | } |
---|
2580 | |
---|
2581 | /** |
---|
2582 | * xmlLoadExternalEntity: |
---|
2583 | * @URL: the URL for the entity to load |
---|
2584 | * @ID: the Public ID for the entity to load |
---|
2585 | * @ctxt: the context in which the entity is called or NULL |
---|
2586 | * |
---|
2587 | * Load an external entity, note that the use of this function for |
---|
2588 | * unparsed entities may generate problems |
---|
2589 | * TODO: a more generic External entity API must be designed |
---|
2590 | * |
---|
2591 | * Returns the xmlParserInputPtr or NULL |
---|
2592 | */ |
---|
2593 | xmlParserInputPtr |
---|
2594 | xmlLoadExternalEntity(const char *URL, const char *ID, |
---|
2595 | xmlParserCtxtPtr ctxt) { |
---|
2596 | return(xmlCurrentExternalEntityLoader(URL, ID, ctxt)); |
---|
2597 | } |
---|
2598 | |
---|
2599 | /************************************************************************ |
---|
2600 | * * |
---|
2601 | * Disabling Network access * |
---|
2602 | * * |
---|
2603 | ************************************************************************/ |
---|
2604 | |
---|
2605 | #ifdef LIBXML_CATALOG_ENABLED |
---|
2606 | static int |
---|
2607 | xmlNoNetExists(const char *URL) |
---|
2608 | { |
---|
2609 | #ifdef HAVE_STAT |
---|
2610 | int ret; |
---|
2611 | struct stat info; |
---|
2612 | const char *path; |
---|
2613 | |
---|
2614 | if (URL == NULL) |
---|
2615 | return (0); |
---|
2616 | |
---|
2617 | if (!xmlStrncmp(BAD_CAST URL, BAD_CAST "file://localhost", 16)) |
---|
2618 | path = &URL[16]; |
---|
2619 | else if (!xmlStrncmp(BAD_CAST URL, BAD_CAST "file:///", 8)) { |
---|
2620 | #if defined (_WIN32) && !defined(__CYGWIN__) |
---|
2621 | path = &URL[8]; |
---|
2622 | #else |
---|
2623 | path = &URL[7]; |
---|
2624 | #endif |
---|
2625 | } else |
---|
2626 | path = URL; |
---|
2627 | ret = stat(path, &info); |
---|
2628 | if (ret == 0) |
---|
2629 | return (1); |
---|
2630 | #endif |
---|
2631 | return (0); |
---|
2632 | } |
---|
2633 | #endif |
---|
2634 | |
---|
2635 | /** |
---|
2636 | * xmlNoNetExternalEntityLoader: |
---|
2637 | * @URL: the URL for the entity to load |
---|
2638 | * @ID: the System ID for the entity to load |
---|
2639 | * @ctxt: the context in which the entity is called or NULL |
---|
2640 | * |
---|
2641 | * A specific entity loader disabling network accesses, though still |
---|
2642 | * allowing local catalog accesses for resolution. |
---|
2643 | * |
---|
2644 | * Returns a new allocated xmlParserInputPtr, or NULL. |
---|
2645 | */ |
---|
2646 | xmlParserInputPtr |
---|
2647 | xmlNoNetExternalEntityLoader(const char *URL, const char *ID, |
---|
2648 | xmlParserCtxtPtr ctxt) { |
---|
2649 | xmlParserInputPtr input = NULL; |
---|
2650 | xmlChar *resource = NULL; |
---|
2651 | |
---|
2652 | #ifdef LIBXML_CATALOG_ENABLED |
---|
2653 | xmlCatalogAllow pref; |
---|
2654 | |
---|
2655 | /* |
---|
2656 | * If the resource doesn't exists as a file, |
---|
2657 | * try to load it from the resource pointed in the catalogs |
---|
2658 | */ |
---|
2659 | pref = xmlCatalogGetDefaults(); |
---|
2660 | |
---|
2661 | if ((pref != XML_CATA_ALLOW_NONE) && (!xmlNoNetExists(URL))) { |
---|
2662 | /* |
---|
2663 | * Do a local lookup |
---|
2664 | */ |
---|
2665 | if ((ctxt->catalogs != NULL) && |
---|
2666 | ((pref == XML_CATA_ALLOW_ALL) || |
---|
2667 | (pref == XML_CATA_ALLOW_DOCUMENT))) { |
---|
2668 | resource = xmlCatalogLocalResolve(ctxt->catalogs, |
---|
2669 | (const xmlChar *)ID, |
---|
2670 | (const xmlChar *)URL); |
---|
2671 | } |
---|
2672 | /* |
---|
2673 | * Try a global lookup |
---|
2674 | */ |
---|
2675 | if ((resource == NULL) && |
---|
2676 | ((pref == XML_CATA_ALLOW_ALL) || |
---|
2677 | (pref == XML_CATA_ALLOW_GLOBAL))) { |
---|
2678 | resource = xmlCatalogResolve((const xmlChar *)ID, |
---|
2679 | (const xmlChar *)URL); |
---|
2680 | } |
---|
2681 | if ((resource == NULL) && (URL != NULL)) |
---|
2682 | resource = xmlStrdup((const xmlChar *) URL); |
---|
2683 | |
---|
2684 | /* |
---|
2685 | * TODO: do an URI lookup on the reference |
---|
2686 | */ |
---|
2687 | if ((resource != NULL) && (!xmlNoNetExists((const char *)resource))) { |
---|
2688 | xmlChar *tmp = NULL; |
---|
2689 | |
---|
2690 | if ((ctxt->catalogs != NULL) && |
---|
2691 | ((pref == XML_CATA_ALLOW_ALL) || |
---|
2692 | (pref == XML_CATA_ALLOW_DOCUMENT))) { |
---|
2693 | tmp = xmlCatalogLocalResolveURI(ctxt->catalogs, resource); |
---|
2694 | } |
---|
2695 | if ((tmp == NULL) && |
---|
2696 | ((pref == XML_CATA_ALLOW_ALL) || |
---|
2697 | (pref == XML_CATA_ALLOW_GLOBAL))) { |
---|
2698 | tmp = xmlCatalogResolveURI(resource); |
---|
2699 | } |
---|
2700 | |
---|
2701 | if (tmp != NULL) { |
---|
2702 | xmlFree(resource); |
---|
2703 | resource = tmp; |
---|
2704 | } |
---|
2705 | } |
---|
2706 | } |
---|
2707 | #endif |
---|
2708 | if (resource == NULL) |
---|
2709 | resource = (xmlChar *) URL; |
---|
2710 | |
---|
2711 | if (resource != NULL) { |
---|
2712 | if ((!xmlStrncasecmp((const xmlChar *) resource, |
---|
2713 | (const xmlChar *) "ftp://", 6)) || |
---|
2714 | (!xmlStrncasecmp((const xmlChar *) resource, |
---|
2715 | (const xmlChar *) "http://", 7))) { |
---|
2716 | xmlGenericError(xmlGenericErrorContext, |
---|
2717 | "Attempt to load network entity %s \n", resource); |
---|
2718 | |
---|
2719 | if (resource != (xmlChar *) URL) |
---|
2720 | xmlFree(resource); |
---|
2721 | return(NULL); |
---|
2722 | } |
---|
2723 | } |
---|
2724 | input = xmlDefaultExternalEntityLoader((const char *) resource, ID, ctxt); |
---|
2725 | if (resource != (xmlChar *) URL) |
---|
2726 | xmlFree(resource); |
---|
2727 | return(input); |
---|
2728 | } |
---|
2729 | |
---|