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Issue 2804483002: Check in the libxml roll script. (Closed)
Patch Set: Code review feedback for the roll script. Created 3 years, 8 months ago
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1 /*
2 * xinclude.c : Code to implement XInclude processing
3 *
4 * World Wide Web Consortium W3C Last Call Working Draft 10 November 2003
5 * http://www.w3.org/TR/2003/WD-xinclude-20031110
6 *
7 * See Copyright for the status of this software.
8 *
9 * daniel@veillard.com
10 */
11
12 #define IN_LIBXML
13 #include "libxml.h"
14
15 #include <string.h>
16 #include <libxml/xmlmemory.h>
17 #include <libxml/tree.h>
18 #include <libxml/parser.h>
19 #include <libxml/uri.h>
20 #include <libxml/xpath.h>
21 #include <libxml/xpointer.h>
22 #include <libxml/parserInternals.h>
23 #include <libxml/xmlerror.h>
24 #include <libxml/encoding.h>
25 #include <libxml/globals.h>
26
27 #ifdef LIBXML_XINCLUDE_ENABLED
28 #include <libxml/xinclude.h>
29
30 #include "buf.h"
31
32 #define XINCLUDE_MAX_DEPTH 40
33
34 /* #define DEBUG_XINCLUDE */
35 #ifdef DEBUG_XINCLUDE
36 #ifdef LIBXML_DEBUG_ENABLED
37 #include <libxml/debugXML.h>
38 #endif
39 #endif
40
41 /************************************************************************
42 * *
43 * XInclude context handling *
44 * *
45 ************************************************************************/
46
47 /*
48 * An XInclude context
49 */
50 typedef xmlChar *xmlURL;
51
52 typedef struct _xmlXIncludeRef xmlXIncludeRef;
53 typedef xmlXIncludeRef *xmlXIncludeRefPtr;
54 struct _xmlXIncludeRef {
55 xmlChar *URI; /* the fully resolved resource URL */
56 xmlChar *fragment; /* the fragment in the URI */
57 xmlDocPtr doc; /* the parsed document */
58 xmlNodePtr ref; /* the node making the reference in the source */
59 xmlNodePtr inc; /* the included copy */
60 int xml; /* xml or txt */
61 int count; /* how many refs use that specific doc */
62 xmlXPathObjectPtr xptr; /* the xpointer if needed */
63 int emptyFb; /* flag to show fallback empty */
64 };
65
66 struct _xmlXIncludeCtxt {
67 xmlDocPtr doc; /* the source document */
68 int incBase; /* the first include for this document */
69 int incNr; /* number of includes */
70 int incMax; /* size of includes tab */
71 xmlXIncludeRefPtr *incTab; /* array of included references */
72
73 int txtNr; /* number of unparsed documents */
74 int txtMax; /* size of unparsed documents tab */
75 xmlNodePtr *txtTab; /* array of unparsed text nodes */
76 xmlURL *txturlTab; /* array of unparsed text URLs */
77
78 xmlChar * url; /* the current URL processed */
79 int urlNr; /* number of URLs stacked */
80 int urlMax; /* size of URL stack */
81 xmlChar * *urlTab; /* URL stack */
82
83 int nbErrors; /* the number of errors detected */
84 int legacy; /* using XINCLUDE_OLD_NS */
85 int parseFlags; /* the flags used for parsing XML documents */
86 xmlChar * base; /* the current xml:base */
87
88 void *_private; /* application data */
89 };
90
91 static int
92 xmlXIncludeDoProcess(xmlXIncludeCtxtPtr ctxt, xmlDocPtr doc, xmlNodePtr tree);
93
94
95 /************************************************************************
96 * *
97 * XInclude error handler *
98 * *
99 ************************************************************************/
100
101 /**
102 * xmlXIncludeErrMemory:
103 * @extra: extra information
104 *
105 * Handle an out of memory condition
106 */
107 static void
108 xmlXIncludeErrMemory(xmlXIncludeCtxtPtr ctxt, xmlNodePtr node,
109 const char *extra)
110 {
111 if (ctxt != NULL)
112 ctxt->nbErrors++;
113 __xmlRaiseError(NULL, NULL, NULL, ctxt, node, XML_FROM_XINCLUDE,
114 XML_ERR_NO_MEMORY, XML_ERR_ERROR, NULL, 0,
115 extra, NULL, NULL, 0, 0,
116 "Memory allocation failed : %s\n", extra);
117 }
118
119 /**
120 * xmlXIncludeErr:
121 * @ctxt: the XInclude context
122 * @node: the context node
123 * @msg: the error message
124 * @extra: extra information
125 *
126 * Handle an XInclude error
127 */
128 static void LIBXML_ATTR_FORMAT(4,0)
129 xmlXIncludeErr(xmlXIncludeCtxtPtr ctxt, xmlNodePtr node, int error,
130 const char *msg, const xmlChar *extra)
131 {
132 if (ctxt != NULL)
133 ctxt->nbErrors++;
134 __xmlRaiseError(NULL, NULL, NULL, ctxt, node, XML_FROM_XINCLUDE,
135 error, XML_ERR_ERROR, NULL, 0,
136 (const char *) extra, NULL, NULL, 0, 0,
137 msg, (const char *) extra);
138 }
139
140 #if 0
141 /**
142 * xmlXIncludeWarn:
143 * @ctxt: the XInclude context
144 * @node: the context node
145 * @msg: the error message
146 * @extra: extra information
147 *
148 * Emit an XInclude warning.
149 */
150 static void LIBXML_ATTR_FORMAT(4,0)
151 xmlXIncludeWarn(xmlXIncludeCtxtPtr ctxt, xmlNodePtr node, int error,
152 const char *msg, const xmlChar *extra)
153 {
154 __xmlRaiseError(NULL, NULL, NULL, ctxt, node, XML_FROM_XINCLUDE,
155 error, XML_ERR_WARNING, NULL, 0,
156 (const char *) extra, NULL, NULL, 0, 0,
157 msg, (const char *) extra);
158 }
159 #endif
160
161 /**
162 * xmlXIncludeGetProp:
163 * @ctxt: the XInclude context
164 * @cur: the node
165 * @name: the attribute name
166 *
167 * Get an XInclude attribute
168 *
169 * Returns the value (to be freed) or NULL if not found
170 */
171 static xmlChar *
172 xmlXIncludeGetProp(xmlXIncludeCtxtPtr ctxt, xmlNodePtr cur,
173 const xmlChar *name) {
174 xmlChar *ret;
175
176 ret = xmlGetNsProp(cur, XINCLUDE_NS, name);
177 if (ret != NULL)
178 return(ret);
179 if (ctxt->legacy != 0) {
180 ret = xmlGetNsProp(cur, XINCLUDE_OLD_NS, name);
181 if (ret != NULL)
182 return(ret);
183 }
184 ret = xmlGetProp(cur, name);
185 return(ret);
186 }
187 /**
188 * xmlXIncludeFreeRef:
189 * @ref: the XInclude reference
190 *
191 * Free an XInclude reference
192 */
193 static void
194 xmlXIncludeFreeRef(xmlXIncludeRefPtr ref) {
195 if (ref == NULL)
196 return;
197 #ifdef DEBUG_XINCLUDE
198 xmlGenericError(xmlGenericErrorContext, "Freeing ref\n");
199 #endif
200 if (ref->doc != NULL) {
201 #ifdef DEBUG_XINCLUDE
202 xmlGenericError(xmlGenericErrorContext, "Freeing doc %s\n", ref->URI);
203 #endif
204 xmlFreeDoc(ref->doc);
205 }
206 if (ref->URI != NULL)
207 xmlFree(ref->URI);
208 if (ref->fragment != NULL)
209 xmlFree(ref->fragment);
210 if (ref->xptr != NULL)
211 xmlXPathFreeObject(ref->xptr);
212 xmlFree(ref);
213 }
214
215 /**
216 * xmlXIncludeNewRef:
217 * @ctxt: the XInclude context
218 * @URI: the resource URI
219 *
220 * Creates a new reference within an XInclude context
221 *
222 * Returns the new set
223 */
224 static xmlXIncludeRefPtr
225 xmlXIncludeNewRef(xmlXIncludeCtxtPtr ctxt, const xmlChar *URI,
226 xmlNodePtr ref) {
227 xmlXIncludeRefPtr ret;
228
229 #ifdef DEBUG_XINCLUDE
230 xmlGenericError(xmlGenericErrorContext, "New ref %s\n", URI);
231 #endif
232 ret = (xmlXIncludeRefPtr) xmlMalloc(sizeof(xmlXIncludeRef));
233 if (ret == NULL) {
234 xmlXIncludeErrMemory(ctxt, ref, "growing XInclude context");
235 return(NULL);
236 }
237 memset(ret, 0, sizeof(xmlXIncludeRef));
238 if (URI == NULL)
239 ret->URI = NULL;
240 else
241 ret->URI = xmlStrdup(URI);
242 ret->fragment = NULL;
243 ret->ref = ref;
244 ret->doc = NULL;
245 ret->count = 0;
246 ret->xml = 0;
247 ret->inc = NULL;
248 if (ctxt->incMax == 0) {
249 ctxt->incMax = 4;
250 ctxt->incTab = (xmlXIncludeRefPtr *) xmlMalloc(ctxt->incMax *
251 sizeof(ctxt->incTab[0]));
252 if (ctxt->incTab == NULL) {
253 xmlXIncludeErrMemory(ctxt, ref, "growing XInclude context");
254 xmlXIncludeFreeRef(ret);
255 return(NULL);
256 }
257 }
258 if (ctxt->incNr >= ctxt->incMax) {
259 ctxt->incMax *= 2;
260 ctxt->incTab = (xmlXIncludeRefPtr *) xmlRealloc(ctxt->incTab,
261 ctxt->incMax * sizeof(ctxt->incTab[0]));
262 if (ctxt->incTab == NULL) {
263 xmlXIncludeErrMemory(ctxt, ref, "growing XInclude context");
264 xmlXIncludeFreeRef(ret);
265 return(NULL);
266 }
267 }
268 ctxt->incTab[ctxt->incNr++] = ret;
269 return(ret);
270 }
271
272 /**
273 * xmlXIncludeNewContext:
274 * @doc: an XML Document
275 *
276 * Creates a new XInclude context
277 *
278 * Returns the new set
279 */
280 xmlXIncludeCtxtPtr
281 xmlXIncludeNewContext(xmlDocPtr doc) {
282 xmlXIncludeCtxtPtr ret;
283
284 #ifdef DEBUG_XINCLUDE
285 xmlGenericError(xmlGenericErrorContext, "New context\n");
286 #endif
287 if (doc == NULL)
288 return(NULL);
289 ret = (xmlXIncludeCtxtPtr) xmlMalloc(sizeof(xmlXIncludeCtxt));
290 if (ret == NULL) {
291 xmlXIncludeErrMemory(NULL, (xmlNodePtr) doc,
292 "creating XInclude context");
293 return(NULL);
294 }
295 memset(ret, 0, sizeof(xmlXIncludeCtxt));
296 ret->doc = doc;
297 ret->incNr = 0;
298 ret->incBase = 0;
299 ret->incMax = 0;
300 ret->incTab = NULL;
301 ret->nbErrors = 0;
302 return(ret);
303 }
304
305 /**
306 * xmlXIncludeURLPush:
307 * @ctxt: the parser context
308 * @value: the url
309 *
310 * Pushes a new url on top of the url stack
311 *
312 * Returns -1 in case of error, the index in the stack otherwise
313 */
314 static int
315 xmlXIncludeURLPush(xmlXIncludeCtxtPtr ctxt,
316 const xmlChar *value)
317 {
318 if (ctxt->urlNr > XINCLUDE_MAX_DEPTH) {
319 xmlXIncludeErr(ctxt, NULL, XML_XINCLUDE_RECURSION,
320 "detected a recursion in %s\n", value);
321 return(-1);
322 }
323 if (ctxt->urlTab == NULL) {
324 ctxt->urlMax = 4;
325 ctxt->urlNr = 0;
326 ctxt->urlTab = (xmlChar * *) xmlMalloc(
327 ctxt->urlMax * sizeof(ctxt->urlTab[0]));
328 if (ctxt->urlTab == NULL) {
329 xmlXIncludeErrMemory(ctxt, NULL, "adding URL");
330 return (-1);
331 }
332 }
333 if (ctxt->urlNr >= ctxt->urlMax) {
334 ctxt->urlMax *= 2;
335 ctxt->urlTab =
336 (xmlChar * *) xmlRealloc(ctxt->urlTab,
337 ctxt->urlMax *
338 sizeof(ctxt->urlTab[0]));
339 if (ctxt->urlTab == NULL) {
340 xmlXIncludeErrMemory(ctxt, NULL, "adding URL");
341 return (-1);
342 }
343 }
344 ctxt->url = ctxt->urlTab[ctxt->urlNr] = xmlStrdup(value);
345 return (ctxt->urlNr++);
346 }
347
348 /**
349 * xmlXIncludeURLPop:
350 * @ctxt: the parser context
351 *
352 * Pops the top URL from the URL stack
353 */
354 static void
355 xmlXIncludeURLPop(xmlXIncludeCtxtPtr ctxt)
356 {
357 xmlChar * ret;
358
359 if (ctxt->urlNr <= 0)
360 return;
361 ctxt->urlNr--;
362 if (ctxt->urlNr > 0)
363 ctxt->url = ctxt->urlTab[ctxt->urlNr - 1];
364 else
365 ctxt->url = NULL;
366 ret = ctxt->urlTab[ctxt->urlNr];
367 ctxt->urlTab[ctxt->urlNr] = NULL;
368 if (ret != NULL)
369 xmlFree(ret);
370 }
371
372 /**
373 * xmlXIncludeFreeContext:
374 * @ctxt: the XInclude context
375 *
376 * Free an XInclude context
377 */
378 void
379 xmlXIncludeFreeContext(xmlXIncludeCtxtPtr ctxt) {
380 int i;
381
382 #ifdef DEBUG_XINCLUDE
383 xmlGenericError(xmlGenericErrorContext, "Freeing context\n");
384 #endif
385 if (ctxt == NULL)
386 return;
387 while (ctxt->urlNr > 0)
388 xmlXIncludeURLPop(ctxt);
389 if (ctxt->urlTab != NULL)
390 xmlFree(ctxt->urlTab);
391 for (i = 0;i < ctxt->incNr;i++) {
392 if (ctxt->incTab[i] != NULL)
393 xmlXIncludeFreeRef(ctxt->incTab[i]);
394 }
395 if (ctxt->txturlTab != NULL) {
396 for (i = 0;i < ctxt->txtNr;i++) {
397 if (ctxt->txturlTab[i] != NULL)
398 xmlFree(ctxt->txturlTab[i]);
399 }
400 }
401 if (ctxt->incTab != NULL)
402 xmlFree(ctxt->incTab);
403 if (ctxt->txtTab != NULL)
404 xmlFree(ctxt->txtTab);
405 if (ctxt->txturlTab != NULL)
406 xmlFree(ctxt->txturlTab);
407 if (ctxt->base != NULL) {
408 xmlFree(ctxt->base);
409 }
410 xmlFree(ctxt);
411 }
412
413 /**
414 * xmlXIncludeParseFile:
415 * @ctxt: the XInclude context
416 * @URL: the URL or file path
417 *
418 * parse a document for XInclude
419 */
420 static xmlDocPtr
421 xmlXIncludeParseFile(xmlXIncludeCtxtPtr ctxt, const char *URL) {
422 xmlDocPtr ret;
423 xmlParserCtxtPtr pctxt;
424 xmlParserInputPtr inputStream;
425
426 xmlInitParser();
427
428 pctxt = xmlNewParserCtxt();
429 if (pctxt == NULL) {
430 xmlXIncludeErrMemory(ctxt, NULL, "cannot allocate parser context");
431 return(NULL);
432 }
433
434 /*
435 * pass in the application data to the parser context.
436 */
437 pctxt->_private = ctxt->_private;
438
439 /*
440 * try to ensure that new documents included are actually
441 * built with the same dictionary as the including document.
442 */
443 if ((ctxt->doc != NULL) && (ctxt->doc->dict != NULL)) {
444 if (pctxt->dict != NULL)
445 xmlDictFree(pctxt->dict);
446 pctxt->dict = ctxt->doc->dict;
447 xmlDictReference(pctxt->dict);
448 }
449
450 xmlCtxtUseOptions(pctxt, ctxt->parseFlags | XML_PARSE_DTDLOAD);
451
452 inputStream = xmlLoadExternalEntity(URL, NULL, pctxt);
453 if (inputStream == NULL) {
454 xmlFreeParserCtxt(pctxt);
455 return(NULL);
456 }
457
458 inputPush(pctxt, inputStream);
459
460 if (pctxt->directory == NULL)
461 pctxt->directory = xmlParserGetDirectory(URL);
462
463 pctxt->loadsubset |= XML_DETECT_IDS;
464
465 xmlParseDocument(pctxt);
466
467 if (pctxt->wellFormed) {
468 ret = pctxt->myDoc;
469 }
470 else {
471 ret = NULL;
472 if (pctxt->myDoc != NULL)
473 xmlFreeDoc(pctxt->myDoc);
474 pctxt->myDoc = NULL;
475 }
476 xmlFreeParserCtxt(pctxt);
477
478 return(ret);
479 }
480
481 /**
482 * xmlXIncludeAddNode:
483 * @ctxt: the XInclude context
484 * @cur: the new node
485 *
486 * Add a new node to process to an XInclude context
487 */
488 static int
489 xmlXIncludeAddNode(xmlXIncludeCtxtPtr ctxt, xmlNodePtr cur) {
490 xmlXIncludeRefPtr ref;
491 xmlURIPtr uri;
492 xmlChar *URL;
493 xmlChar *fragment = NULL;
494 xmlChar *href;
495 xmlChar *parse;
496 xmlChar *base;
497 xmlChar *URI;
498 int xml = 1, i; /* default Issue 64 */
499 int local = 0;
500
501
502 if (ctxt == NULL)
503 return(-1);
504 if (cur == NULL)
505 return(-1);
506
507 #ifdef DEBUG_XINCLUDE
508 xmlGenericError(xmlGenericErrorContext, "Add node\n");
509 #endif
510 /*
511 * read the attributes
512 */
513 href = xmlXIncludeGetProp(ctxt, cur, XINCLUDE_HREF);
514 if (href == NULL) {
515 href = xmlStrdup(BAD_CAST ""); /* @@@@ href is now optional */
516 if (href == NULL)
517 return(-1);
518 }
519 if ((href[0] == '#') || (href[0] == 0))
520 local = 1;
521 parse = xmlXIncludeGetProp(ctxt, cur, XINCLUDE_PARSE);
522 if (parse != NULL) {
523 if (xmlStrEqual(parse, XINCLUDE_PARSE_XML))
524 xml = 1;
525 else if (xmlStrEqual(parse, XINCLUDE_PARSE_TEXT))
526 xml = 0;
527 else {
528 xmlXIncludeErr(ctxt, cur, XML_XINCLUDE_PARSE_VALUE,
529 "invalid value %s for 'parse'\n", parse);
530 if (href != NULL)
531 xmlFree(href);
532 if (parse != NULL)
533 xmlFree(parse);
534 return(-1);
535 }
536 }
537
538 /*
539 * compute the URI
540 */
541 base = xmlNodeGetBase(ctxt->doc, cur);
542 if (base == NULL) {
543 URI = xmlBuildURI(href, ctxt->doc->URL);
544 } else {
545 URI = xmlBuildURI(href, base);
546 }
547 if (URI == NULL) {
548 xmlChar *escbase;
549 xmlChar *eschref;
550 /*
551 * Some escaping may be needed
552 */
553 escbase = xmlURIEscape(base);
554 eschref = xmlURIEscape(href);
555 URI = xmlBuildURI(eschref, escbase);
556 if (escbase != NULL)
557 xmlFree(escbase);
558 if (eschref != NULL)
559 xmlFree(eschref);
560 }
561 if (parse != NULL)
562 xmlFree(parse);
563 if (href != NULL)
564 xmlFree(href);
565 if (base != NULL)
566 xmlFree(base);
567 if (URI == NULL) {
568 xmlXIncludeErr(ctxt, cur, XML_XINCLUDE_HREF_URI,
569 "failed build URL\n", NULL);
570 return(-1);
571 }
572 fragment = xmlXIncludeGetProp(ctxt, cur, XINCLUDE_PARSE_XPOINTER);
573
574 /*
575 * Check the URL and remove any fragment identifier
576 */
577 uri = xmlParseURI((const char *)URI);
578 if (uri == NULL) {
579 xmlXIncludeErr(ctxt, cur, XML_XINCLUDE_HREF_URI,
580 "invalid value URI %s\n", URI);
581 if (fragment != NULL)
582 xmlFree(fragment);
583 xmlFree(URI);
584 return(-1);
585 }
586
587 if (uri->fragment != NULL) {
588 if (ctxt->legacy != 0) {
589 if (fragment == NULL) {
590 fragment = (xmlChar *) uri->fragment;
591 } else {
592 xmlFree(uri->fragment);
593 }
594 } else {
595 xmlXIncludeErr(ctxt, cur, XML_XINCLUDE_FRAGMENT_ID,
596 "Invalid fragment identifier in URI %s use the xpointer attribute\n",
597 URI);
598 if (fragment != NULL)
599 xmlFree(fragment);
600 xmlFreeURI(uri);
601 xmlFree(URI);
602 return(-1);
603 }
604 uri->fragment = NULL;
605 }
606 URL = xmlSaveUri(uri);
607 xmlFreeURI(uri);
608 xmlFree(URI);
609 if (URL == NULL) {
610 xmlXIncludeErr(ctxt, cur, XML_XINCLUDE_HREF_URI,
611 "invalid value URI %s\n", URI);
612 if (fragment != NULL)
613 xmlFree(fragment);
614 return(-1);
615 }
616
617 /*
618 * If local and xml then we need a fragment
619 */
620 if ((local == 1) && (xml == 1) &&
621 ((fragment == NULL) || (fragment[0] == 0))) {
622 xmlXIncludeErr(ctxt, cur, XML_XINCLUDE_RECURSION,
623 "detected a local recursion with no xpointer in %s\n",
624 URL);
625 if (fragment != NULL)
626 xmlFree(fragment);
627 return(-1);
628 }
629
630 /*
631 * Check the URL against the stack for recursions
632 */
633 if ((!local) && (xml == 1)) {
634 for (i = 0;i < ctxt->urlNr;i++) {
635 if (xmlStrEqual(URL, ctxt->urlTab[i])) {
636 xmlXIncludeErr(ctxt, cur, XML_XINCLUDE_RECURSION,
637 "detected a recursion in %s\n", URL);
638 return(-1);
639 }
640 }
641 }
642
643 ref = xmlXIncludeNewRef(ctxt, URL, cur);
644 if (ref == NULL) {
645 return(-1);
646 }
647 ref->fragment = fragment;
648 ref->doc = NULL;
649 ref->xml = xml;
650 ref->count = 1;
651 xmlFree(URL);
652 return(0);
653 }
654
655 /**
656 * xmlXIncludeRecurseDoc:
657 * @ctxt: the XInclude context
658 * @doc: the new document
659 * @url: the associated URL
660 *
661 * The XInclude recursive nature is handled at this point.
662 */
663 static void
664 xmlXIncludeRecurseDoc(xmlXIncludeCtxtPtr ctxt, xmlDocPtr doc,
665 const xmlURL url ATTRIBUTE_UNUSED) {
666 xmlXIncludeCtxtPtr newctxt;
667 int i;
668
669 /*
670 * Avoid recursion in already substitued resources
671 for (i = 0;i < ctxt->urlNr;i++) {
672 if (xmlStrEqual(doc->URL, ctxt->urlTab[i]))
673 return;
674 }
675 */
676
677 #ifdef DEBUG_XINCLUDE
678 xmlGenericError(xmlGenericErrorContext, "Recursing in doc %s\n", doc->URL);
679 #endif
680 /*
681 * Handle recursion here.
682 */
683
684 newctxt = xmlXIncludeNewContext(doc);
685 if (newctxt != NULL) {
686 /*
687 * Copy the private user data
688 */
689 newctxt->_private = ctxt->_private;
690 /*
691 * Copy the existing document set
692 */
693 newctxt->incMax = ctxt->incMax;
694 newctxt->incNr = ctxt->incNr;
695 newctxt->incTab = (xmlXIncludeRefPtr *) xmlMalloc(newctxt->incMax *
696 sizeof(newctxt->incTab[0]));
697 if (newctxt->incTab == NULL) {
698 xmlXIncludeErrMemory(ctxt, (xmlNodePtr) doc, "processing doc");
699 xmlFree(newctxt);
700 return;
701 }
702 /*
703 * copy the urlTab
704 */
705 newctxt->urlMax = ctxt->urlMax;
706 newctxt->urlNr = ctxt->urlNr;
707 newctxt->urlTab = ctxt->urlTab;
708
709 /*
710 * Inherit the existing base
711 */
712 newctxt->base = xmlStrdup(ctxt->base);
713
714 /*
715 * Inherit the documents already in use by other includes
716 */
717 newctxt->incBase = ctxt->incNr;
718 for (i = 0;i < ctxt->incNr;i++) {
719 newctxt->incTab[i] = ctxt->incTab[i];
720 newctxt->incTab[i]->count++; /* prevent the recursion from
721 freeing it */
722 }
723 /*
724 * The new context should also inherit the Parse Flags
725 * (bug 132597)
726 */
727 newctxt->parseFlags = ctxt->parseFlags;
728 xmlXIncludeDoProcess(newctxt, doc, xmlDocGetRootElement(doc));
729 for (i = 0;i < ctxt->incNr;i++) {
730 newctxt->incTab[i]->count--;
731 newctxt->incTab[i] = NULL;
732 }
733
734 /* urlTab may have been reallocated */
735 ctxt->urlTab = newctxt->urlTab;
736 ctxt->urlMax = newctxt->urlMax;
737
738 newctxt->urlMax = 0;
739 newctxt->urlNr = 0;
740 newctxt->urlTab = NULL;
741
742 xmlXIncludeFreeContext(newctxt);
743 }
744 #ifdef DEBUG_XINCLUDE
745 xmlGenericError(xmlGenericErrorContext, "Done recursing in doc %s\n", url);
746 #endif
747 }
748
749 /**
750 * xmlXIncludeAddTxt:
751 * @ctxt: the XInclude context
752 * @txt: the new text node
753 * @url: the associated URL
754 *
755 * Add a new txtument to the list
756 */
757 static void
758 xmlXIncludeAddTxt(xmlXIncludeCtxtPtr ctxt, xmlNodePtr txt, const xmlURL url) {
759 #ifdef DEBUG_XINCLUDE
760 xmlGenericError(xmlGenericErrorContext, "Adding text %s\n", url);
761 #endif
762 if (ctxt->txtMax == 0) {
763 ctxt->txtMax = 4;
764 ctxt->txtTab = (xmlNodePtr *) xmlMalloc(ctxt->txtMax *
765 sizeof(ctxt->txtTab[0]));
766 if (ctxt->txtTab == NULL) {
767 xmlXIncludeErrMemory(ctxt, NULL, "processing text");
768 return;
769 }
770 ctxt->txturlTab = (xmlURL *) xmlMalloc(ctxt->txtMax *
771 sizeof(ctxt->txturlTab[0]));
772 if (ctxt->txturlTab == NULL) {
773 xmlXIncludeErrMemory(ctxt, NULL, "processing text");
774 return;
775 }
776 }
777 if (ctxt->txtNr >= ctxt->txtMax) {
778 ctxt->txtMax *= 2;
779 ctxt->txtTab = (xmlNodePtr *) xmlRealloc(ctxt->txtTab,
780 ctxt->txtMax * sizeof(ctxt->txtTab[0]));
781 if (ctxt->txtTab == NULL) {
782 xmlXIncludeErrMemory(ctxt, NULL, "processing text");
783 return;
784 }
785 ctxt->txturlTab = (xmlURL *) xmlRealloc(ctxt->txturlTab,
786 ctxt->txtMax * sizeof(ctxt->txturlTab[0]));
787 if (ctxt->txturlTab == NULL) {
788 xmlXIncludeErrMemory(ctxt, NULL, "processing text");
789 return;
790 }
791 }
792 ctxt->txtTab[ctxt->txtNr] = txt;
793 ctxt->txturlTab[ctxt->txtNr] = xmlStrdup(url);
794 ctxt->txtNr++;
795 }
796
797 /************************************************************************
798 * *
799 * Node copy with specific semantic *
800 * *
801 ************************************************************************/
802
803 static xmlNodePtr
804 xmlXIncludeCopyNodeList(xmlXIncludeCtxtPtr ctxt, xmlDocPtr target,
805 xmlDocPtr source, xmlNodePtr elem);
806
807 /**
808 * xmlXIncludeCopyNode:
809 * @ctxt: the XInclude context
810 * @target: the document target
811 * @source: the document source
812 * @elem: the element
813 *
814 * Make a copy of the node while preserving the XInclude semantic
815 * of the Infoset copy
816 */
817 static xmlNodePtr
818 xmlXIncludeCopyNode(xmlXIncludeCtxtPtr ctxt, xmlDocPtr target,
819 xmlDocPtr source, xmlNodePtr elem) {
820 xmlNodePtr result = NULL;
821
822 if ((ctxt == NULL) || (target == NULL) || (source == NULL) ||
823 (elem == NULL))
824 return(NULL);
825 if (elem->type == XML_DTD_NODE)
826 return(NULL);
827 if (elem->type == XML_DOCUMENT_NODE)
828 result = xmlXIncludeCopyNodeList(ctxt, target, source, elem->children);
829 else
830 result = xmlDocCopyNode(elem, target, 1);
831 return(result);
832 }
833
834 /**
835 * xmlXIncludeCopyNodeList:
836 * @ctxt: the XInclude context
837 * @target: the document target
838 * @source: the document source
839 * @elem: the element list
840 *
841 * Make a copy of the node list while preserving the XInclude semantic
842 * of the Infoset copy
843 */
844 static xmlNodePtr
845 xmlXIncludeCopyNodeList(xmlXIncludeCtxtPtr ctxt, xmlDocPtr target,
846 xmlDocPtr source, xmlNodePtr elem) {
847 xmlNodePtr cur, res, result = NULL, last = NULL;
848
849 if ((ctxt == NULL) || (target == NULL) || (source == NULL) ||
850 (elem == NULL))
851 return(NULL);
852 cur = elem;
853 while (cur != NULL) {
854 res = xmlXIncludeCopyNode(ctxt, target, source, cur);
855 if (res != NULL) {
856 if (result == NULL) {
857 result = last = res;
858 } else {
859 last->next = res;
860 res->prev = last;
861 last = res;
862 }
863 }
864 cur = cur->next;
865 }
866 return(result);
867 }
868
869 /**
870 * xmlXIncludeGetNthChild:
871 * @cur: the node
872 * @no: the child number
873 *
874 * Returns the @n'th element child of @cur or NULL
875 */
876 static xmlNodePtr
877 xmlXIncludeGetNthChild(xmlNodePtr cur, int no) {
878 int i;
879 if ((cur == NULL) || (cur->type == XML_NAMESPACE_DECL))
880 return(NULL);
881 cur = cur->children;
882 for (i = 0;i <= no;cur = cur->next) {
883 if (cur == NULL)
884 return(cur);
885 if ((cur->type == XML_ELEMENT_NODE) ||
886 (cur->type == XML_DOCUMENT_NODE) ||
887 (cur->type == XML_HTML_DOCUMENT_NODE)) {
888 i++;
889 if (i == no)
890 break;
891 }
892 }
893 return(cur);
894 }
895
896 xmlNodePtr xmlXPtrAdvanceNode(xmlNodePtr cur, int *level); /* in xpointer.c */
897 /**
898 * xmlXIncludeCopyRange:
899 * @ctxt: the XInclude context
900 * @target: the document target
901 * @source: the document source
902 * @obj: the XPointer result from the evaluation.
903 *
904 * Build a node list tree copy of the XPointer result.
905 *
906 * Returns an xmlNodePtr list or NULL.
907 * The caller has to free the node tree.
908 */
909 static xmlNodePtr
910 xmlXIncludeCopyRange(xmlXIncludeCtxtPtr ctxt, xmlDocPtr target,
911 xmlDocPtr source, xmlXPathObjectPtr range) {
912 /* pointers to generated nodes */
913 xmlNodePtr list = NULL, last = NULL, listParent = NULL;
914 xmlNodePtr tmp, tmp2;
915 /* pointers to traversal nodes */
916 xmlNodePtr start, cur, end;
917 int index1, index2;
918 int level = 0, lastLevel = 0, endLevel = 0, endFlag = 0;
919
920 if ((ctxt == NULL) || (target == NULL) || (source == NULL) ||
921 (range == NULL))
922 return(NULL);
923 if (range->type != XPATH_RANGE)
924 return(NULL);
925 start = (xmlNodePtr) range->user;
926
927 if ((start == NULL) || (start->type == XML_NAMESPACE_DECL))
928 return(NULL);
929 end = range->user2;
930 if (end == NULL)
931 return(xmlDocCopyNode(start, target, 1));
932 if (end->type == XML_NAMESPACE_DECL)
933 return(NULL);
934
935 cur = start;
936 index1 = range->index;
937 index2 = range->index2;
938 /*
939 * level is depth of the current node under consideration
940 * list is the pointer to the root of the output tree
941 * listParent is a pointer to the parent of output tree (within
942 the included file) in case we need to add another level
943 * last is a pointer to the last node added to the output tree
944 * lastLevel is the depth of last (relative to the root)
945 */
946 while (cur != NULL) {
947 /*
948 * Check if our output tree needs a parent
949 */
950 if (level < 0) {
951 while (level < 0) {
952 /* copy must include namespaces and properties */
953 tmp2 = xmlDocCopyNode(listParent, target, 2);
954 xmlAddChild(tmp2, list);
955 list = tmp2;
956 listParent = listParent->parent;
957 level++;
958 }
959 last = list;
960 lastLevel = 0;
961 }
962 /*
963 * Check whether we need to change our insertion point
964 */
965 while (level < lastLevel) {
966 last = last->parent;
967 lastLevel --;
968 }
969 if (cur == end) { /* Are we at the end of the range? */
970 if (cur->type == XML_TEXT_NODE) {
971 const xmlChar *content = cur->content;
972 int len;
973
974 if (content == NULL) {
975 tmp = xmlNewTextLen(NULL, 0);
976 } else {
977 len = index2;
978 if ((cur == start) && (index1 > 1)) {
979 content += (index1 - 1);
980 len -= (index1 - 1);
981 } else {
982 len = index2;
983 }
984 tmp = xmlNewTextLen(content, len);
985 }
986 /* single sub text node selection */
987 if (list == NULL)
988 return(tmp);
989 /* prune and return full set */
990 if (level == lastLevel)
991 xmlAddNextSibling(last, tmp);
992 else
993 xmlAddChild(last, tmp);
994 return(list);
995 } else { /* ending node not a text node */
996 endLevel = level; /* remember the level of the end node */
997 endFlag = 1;
998 /* last node - need to take care of properties + namespaces */
999 tmp = xmlDocCopyNode(cur, target, 2);
1000 if (list == NULL) {
1001 list = tmp;
1002 listParent = cur->parent;
1003 } else {
1004 if (level == lastLevel)
1005 xmlAddNextSibling(last, tmp);
1006 else {
1007 xmlAddChild(last, tmp);
1008 lastLevel = level;
1009 }
1010 }
1011 last = tmp;
1012
1013 if (index2 > 1) {
1014 end = xmlXIncludeGetNthChild(cur, index2 - 1);
1015 index2 = 0;
1016 }
1017 if ((cur == start) && (index1 > 1)) {
1018 cur = xmlXIncludeGetNthChild(cur, index1 - 1);
1019 index1 = 0;
1020 } else {
1021 cur = cur->children;
1022 }
1023 level++; /* increment level to show change */
1024 /*
1025 * Now gather the remaining nodes from cur to end
1026 */
1027 continue; /* while */
1028 }
1029 } else if (cur == start) { /* Not at the end, are we at start? */
1030 if ((cur->type == XML_TEXT_NODE) ||
1031 (cur->type == XML_CDATA_SECTION_NODE)) {
1032 const xmlChar *content = cur->content;
1033
1034 if (content == NULL) {
1035 tmp = xmlNewTextLen(NULL, 0);
1036 } else {
1037 if (index1 > 1) {
1038 content += (index1 - 1);
1039 index1 = 0;
1040 }
1041 tmp = xmlNewText(content);
1042 }
1043 last = list = tmp;
1044 listParent = cur->parent;
1045 } else { /* Not text node */
1046 /*
1047 * start of the range - need to take care of
1048 * properties and namespaces
1049 */
1050 tmp = xmlDocCopyNode(cur, target, 2);
1051 list = last = tmp;
1052 listParent = cur->parent;
1053 if (index1 > 1) { /* Do we need to position? */
1054 cur = xmlXIncludeGetNthChild(cur, index1 - 1);
1055 level = lastLevel = 1;
1056 index1 = 0;
1057 /*
1058 * Now gather the remaining nodes from cur to end
1059 */
1060 continue; /* while */
1061 }
1062 }
1063 } else {
1064 tmp = NULL;
1065 switch (cur->type) {
1066 case XML_DTD_NODE:
1067 case XML_ELEMENT_DECL:
1068 case XML_ATTRIBUTE_DECL:
1069 case XML_ENTITY_NODE:
1070 /* Do not copy DTD informations */
1071 break;
1072 case XML_ENTITY_DECL:
1073 /* handle crossing entities -> stack needed */
1074 break;
1075 case XML_XINCLUDE_START:
1076 case XML_XINCLUDE_END:
1077 /* don't consider it part of the tree content */
1078 break;
1079 case XML_ATTRIBUTE_NODE:
1080 /* Humm, should not happen ! */
1081 break;
1082 default:
1083 /*
1084 * Middle of the range - need to take care of
1085 * properties and namespaces
1086 */
1087 tmp = xmlDocCopyNode(cur, target, 2);
1088 break;
1089 }
1090 if (tmp != NULL) {
1091 if (level == lastLevel)
1092 xmlAddNextSibling(last, tmp);
1093 else {
1094 xmlAddChild(last, tmp);
1095 lastLevel = level;
1096 }
1097 last = tmp;
1098 }
1099 }
1100 /*
1101 * Skip to next node in document order
1102 */
1103 cur = xmlXPtrAdvanceNode(cur, &level);
1104 if (endFlag && (level >= endLevel))
1105 break;
1106 }
1107 return(list);
1108 }
1109
1110 /**
1111 * xmlXIncludeBuildNodeList:
1112 * @ctxt: the XInclude context
1113 * @target: the document target
1114 * @source: the document source
1115 * @obj: the XPointer result from the evaluation.
1116 *
1117 * Build a node list tree copy of the XPointer result.
1118 * This will drop Attributes and Namespace declarations.
1119 *
1120 * Returns an xmlNodePtr list or NULL.
1121 * the caller has to free the node tree.
1122 */
1123 static xmlNodePtr
1124 xmlXIncludeCopyXPointer(xmlXIncludeCtxtPtr ctxt, xmlDocPtr target,
1125 xmlDocPtr source, xmlXPathObjectPtr obj) {
1126 xmlNodePtr list = NULL, last = NULL;
1127 int i;
1128
1129 if (source == NULL)
1130 source = ctxt->doc;
1131 if ((ctxt == NULL) || (target == NULL) || (source == NULL) ||
1132 (obj == NULL))
1133 return(NULL);
1134 switch (obj->type) {
1135 case XPATH_NODESET: {
1136 xmlNodeSetPtr set = obj->nodesetval;
1137 if (set == NULL)
1138 return(NULL);
1139 for (i = 0;i < set->nodeNr;i++) {
1140 if (set->nodeTab[i] == NULL)
1141 continue;
1142 switch (set->nodeTab[i]->type) {
1143 case XML_TEXT_NODE:
1144 case XML_CDATA_SECTION_NODE:
1145 case XML_ELEMENT_NODE:
1146 case XML_ENTITY_REF_NODE:
1147 case XML_ENTITY_NODE:
1148 case XML_PI_NODE:
1149 case XML_COMMENT_NODE:
1150 case XML_DOCUMENT_NODE:
1151 case XML_HTML_DOCUMENT_NODE:
1152 #ifdef LIBXML_DOCB_ENABLED
1153 case XML_DOCB_DOCUMENT_NODE:
1154 #endif
1155 case XML_XINCLUDE_END:
1156 break;
1157 case XML_XINCLUDE_START: {
1158 xmlNodePtr tmp, cur = set->nodeTab[i];
1159
1160 cur = cur->next;
1161 while (cur != NULL) {
1162 switch(cur->type) {
1163 case XML_TEXT_NODE:
1164 case XML_CDATA_SECTION_NODE:
1165 case XML_ELEMENT_NODE:
1166 case XML_ENTITY_REF_NODE:
1167 case XML_ENTITY_NODE:
1168 case XML_PI_NODE:
1169 case XML_COMMENT_NODE:
1170 tmp = xmlXIncludeCopyNode(ctxt, target,
1171 source, cur);
1172 if (last == NULL) {
1173 list = last = tmp;
1174 } else {
1175 xmlAddNextSibling(last, tmp);
1176 last = tmp;
1177 }
1178 cur = cur->next;
1179 continue;
1180 default:
1181 break;
1182 }
1183 break;
1184 }
1185 continue;
1186 }
1187 case XML_ATTRIBUTE_NODE:
1188 case XML_NAMESPACE_DECL:
1189 case XML_DOCUMENT_TYPE_NODE:
1190 case XML_DOCUMENT_FRAG_NODE:
1191 case XML_NOTATION_NODE:
1192 case XML_DTD_NODE:
1193 case XML_ELEMENT_DECL:
1194 case XML_ATTRIBUTE_DECL:
1195 case XML_ENTITY_DECL:
1196 continue; /* for */
1197 }
1198 if (last == NULL)
1199 list = last = xmlXIncludeCopyNode(ctxt, target, source,
1200 set->nodeTab[i]);
1201 else {
1202 xmlAddNextSibling(last,
1203 xmlXIncludeCopyNode(ctxt, target, source,
1204 set->nodeTab[i]));
1205 if (last->next != NULL)
1206 last = last->next;
1207 }
1208 }
1209 break;
1210 }
1211 #ifdef LIBXML_XPTR_ENABLED
1212 case XPATH_LOCATIONSET: {
1213 xmlLocationSetPtr set = (xmlLocationSetPtr) obj->user;
1214 if (set == NULL)
1215 return(NULL);
1216 for (i = 0;i < set->locNr;i++) {
1217 if (last == NULL)
1218 list = last = xmlXIncludeCopyXPointer(ctxt, target, source,
1219 set->locTab[i]);
1220 else
1221 xmlAddNextSibling(last,
1222 xmlXIncludeCopyXPointer(ctxt, target, source,
1223 set->locTab[i]));
1224 if (last != NULL) {
1225 while (last->next != NULL)
1226 last = last->next;
1227 }
1228 }
1229 break;
1230 }
1231 case XPATH_RANGE:
1232 return(xmlXIncludeCopyRange(ctxt, target, source, obj));
1233 #endif
1234 case XPATH_POINT:
1235 /* points are ignored in XInclude */
1236 break;
1237 default:
1238 break;
1239 }
1240 return(list);
1241 }
1242 /************************************************************************
1243 * *
1244 * XInclude I/O handling *
1245 * *
1246 ************************************************************************/
1247
1248 typedef struct _xmlXIncludeMergeData xmlXIncludeMergeData;
1249 typedef xmlXIncludeMergeData *xmlXIncludeMergeDataPtr;
1250 struct _xmlXIncludeMergeData {
1251 xmlDocPtr doc;
1252 xmlXIncludeCtxtPtr ctxt;
1253 };
1254
1255 /**
1256 * xmlXIncludeMergeOneEntity:
1257 * @ent: the entity
1258 * @doc: the including doc
1259 * @nr: the entity name
1260 *
1261 * Inplements the merge of one entity
1262 */
1263 static void
1264 xmlXIncludeMergeEntity(xmlEntityPtr ent, xmlXIncludeMergeDataPtr data,
1265 xmlChar *name ATTRIBUTE_UNUSED) {
1266 xmlEntityPtr ret, prev;
1267 xmlDocPtr doc;
1268 xmlXIncludeCtxtPtr ctxt;
1269
1270 if ((ent == NULL) || (data == NULL))
1271 return;
1272 ctxt = data->ctxt;
1273 doc = data->doc;
1274 if ((ctxt == NULL) || (doc == NULL))
1275 return;
1276 switch (ent->etype) {
1277 case XML_INTERNAL_PARAMETER_ENTITY:
1278 case XML_EXTERNAL_PARAMETER_ENTITY:
1279 case XML_INTERNAL_PREDEFINED_ENTITY:
1280 return;
1281 case XML_INTERNAL_GENERAL_ENTITY:
1282 case XML_EXTERNAL_GENERAL_PARSED_ENTITY:
1283 case XML_EXTERNAL_GENERAL_UNPARSED_ENTITY:
1284 break;
1285 }
1286 ret = xmlAddDocEntity(doc, ent->name, ent->etype, ent->ExternalID,
1287 ent->SystemID, ent->content);
1288 if (ret != NULL) {
1289 if (ent->URI != NULL)
1290 ret->URI = xmlStrdup(ent->URI);
1291 } else {
1292 prev = xmlGetDocEntity(doc, ent->name);
1293 if (prev != NULL) {
1294 if (ent->etype != prev->etype)
1295 goto error;
1296
1297 if ((ent->SystemID != NULL) && (prev->SystemID != NULL)) {
1298 if (!xmlStrEqual(ent->SystemID, prev->SystemID))
1299 goto error;
1300 } else if ((ent->ExternalID != NULL) &&
1301 (prev->ExternalID != NULL)) {
1302 if (!xmlStrEqual(ent->ExternalID, prev->ExternalID))
1303 goto error;
1304 } else if ((ent->content != NULL) && (prev->content != NULL)) {
1305 if (!xmlStrEqual(ent->content, prev->content))
1306 goto error;
1307 } else {
1308 goto error;
1309 }
1310
1311 }
1312 }
1313 return;
1314 error:
1315 switch (ent->etype) {
1316 case XML_INTERNAL_PARAMETER_ENTITY:
1317 case XML_EXTERNAL_PARAMETER_ENTITY:
1318 case XML_INTERNAL_PREDEFINED_ENTITY:
1319 case XML_INTERNAL_GENERAL_ENTITY:
1320 case XML_EXTERNAL_GENERAL_PARSED_ENTITY:
1321 return;
1322 case XML_EXTERNAL_GENERAL_UNPARSED_ENTITY:
1323 break;
1324 }
1325 xmlXIncludeErr(ctxt, (xmlNodePtr) ent, XML_XINCLUDE_ENTITY_DEF_MISMATCH,
1326 "mismatch in redefinition of entity %s\n",
1327 ent->name);
1328 }
1329
1330 /**
1331 * xmlXIncludeMergeEntities:
1332 * @ctxt: an XInclude context
1333 * @doc: the including doc
1334 * @from: the included doc
1335 *
1336 * Inplements the entity merge
1337 *
1338 * Returns 0 if merge succeeded, -1 if some processing failed
1339 */
1340 static int
1341 xmlXIncludeMergeEntities(xmlXIncludeCtxtPtr ctxt, xmlDocPtr doc,
1342 xmlDocPtr from) {
1343 xmlNodePtr cur;
1344 xmlDtdPtr target, source;
1345
1346 if (ctxt == NULL)
1347 return(-1);
1348
1349 if ((from == NULL) || (from->intSubset == NULL))
1350 return(0);
1351
1352 target = doc->intSubset;
1353 if (target == NULL) {
1354 cur = xmlDocGetRootElement(doc);
1355 if (cur == NULL)
1356 return(-1);
1357 target = xmlCreateIntSubset(doc, cur->name, NULL, NULL);
1358 if (target == NULL)
1359 return(-1);
1360 }
1361
1362 source = from->intSubset;
1363 if ((source != NULL) && (source->entities != NULL)) {
1364 xmlXIncludeMergeData data;
1365
1366 data.ctxt = ctxt;
1367 data.doc = doc;
1368
1369 xmlHashScan((xmlHashTablePtr) source->entities,
1370 (xmlHashScanner) xmlXIncludeMergeEntity, &data);
1371 }
1372 source = from->extSubset;
1373 if ((source != NULL) && (source->entities != NULL)) {
1374 xmlXIncludeMergeData data;
1375
1376 data.ctxt = ctxt;
1377 data.doc = doc;
1378
1379 /*
1380 * don't duplicate existing stuff when external subsets are the same
1381 */
1382 if ((!xmlStrEqual(target->ExternalID, source->ExternalID)) &&
1383 (!xmlStrEqual(target->SystemID, source->SystemID))) {
1384 xmlHashScan((xmlHashTablePtr) source->entities,
1385 (xmlHashScanner) xmlXIncludeMergeEntity, &data);
1386 }
1387 }
1388 return(0);
1389 }
1390
1391 /**
1392 * xmlXIncludeLoadDoc:
1393 * @ctxt: the XInclude context
1394 * @url: the associated URL
1395 * @nr: the xinclude node number
1396 *
1397 * Load the document, and store the result in the XInclude context
1398 *
1399 * Returns 0 in case of success, -1 in case of failure
1400 */
1401 static int
1402 xmlXIncludeLoadDoc(xmlXIncludeCtxtPtr ctxt, const xmlChar *url, int nr) {
1403 xmlDocPtr doc;
1404 xmlURIPtr uri;
1405 xmlChar *URL;
1406 xmlChar *fragment = NULL;
1407 int i = 0;
1408 #ifdef LIBXML_XPTR_ENABLED
1409 int saveFlags;
1410 #endif
1411
1412 #ifdef DEBUG_XINCLUDE
1413 xmlGenericError(xmlGenericErrorContext, "Loading doc %s:%d\n", url, nr);
1414 #endif
1415 /*
1416 * Check the URL and remove any fragment identifier
1417 */
1418 uri = xmlParseURI((const char *)url);
1419 if (uri == NULL) {
1420 xmlXIncludeErr(ctxt, ctxt->incTab[nr]->ref,
1421 XML_XINCLUDE_HREF_URI,
1422 "invalid value URI %s\n", url);
1423 return(-1);
1424 }
1425 if (uri->fragment != NULL) {
1426 fragment = (xmlChar *) uri->fragment;
1427 uri->fragment = NULL;
1428 }
1429 if ((ctxt->incTab != NULL) && (ctxt->incTab[nr] != NULL) &&
1430 (ctxt->incTab[nr]->fragment != NULL)) {
1431 if (fragment != NULL) xmlFree(fragment);
1432 fragment = xmlStrdup(ctxt->incTab[nr]->fragment);
1433 }
1434 URL = xmlSaveUri(uri);
1435 xmlFreeURI(uri);
1436 if (URL == NULL) {
1437 if (ctxt->incTab != NULL)
1438 xmlXIncludeErr(ctxt, ctxt->incTab[nr]->ref,
1439 XML_XINCLUDE_HREF_URI,
1440 "invalid value URI %s\n", url);
1441 else
1442 xmlXIncludeErr(ctxt, NULL,
1443 XML_XINCLUDE_HREF_URI,
1444 "invalid value URI %s\n", url);
1445 if (fragment != NULL)
1446 xmlFree(fragment);
1447 return(-1);
1448 }
1449
1450 /*
1451 * Handling of references to the local document are done
1452 * directly through ctxt->doc.
1453 */
1454 if ((URL[0] == 0) || (URL[0] == '#') ||
1455 ((ctxt->doc != NULL) && (xmlStrEqual(URL, ctxt->doc->URL)))) {
1456 doc = NULL;
1457 goto loaded;
1458 }
1459
1460 /*
1461 * Prevent reloading twice the document.
1462 */
1463 for (i = 0; i < ctxt->incNr; i++) {
1464 if ((xmlStrEqual(URL, ctxt->incTab[i]->URI)) &&
1465 (ctxt->incTab[i]->doc != NULL)) {
1466 doc = ctxt->incTab[i]->doc;
1467 #ifdef DEBUG_XINCLUDE
1468 printf("Already loaded %s\n", URL);
1469 #endif
1470 goto loaded;
1471 }
1472 }
1473
1474 /*
1475 * Load it.
1476 */
1477 #ifdef DEBUG_XINCLUDE
1478 printf("loading %s\n", URL);
1479 #endif
1480 #ifdef LIBXML_XPTR_ENABLED
1481 /*
1482 * If this is an XPointer evaluation, we want to assure that
1483 * all entities have been resolved prior to processing the
1484 * referenced document
1485 */
1486 saveFlags = ctxt->parseFlags;
1487 if (fragment != NULL) { /* if this is an XPointer eval */
1488 ctxt->parseFlags |= XML_PARSE_NOENT;
1489 }
1490 #endif
1491
1492 doc = xmlXIncludeParseFile(ctxt, (const char *)URL);
1493 #ifdef LIBXML_XPTR_ENABLED
1494 ctxt->parseFlags = saveFlags;
1495 #endif
1496 if (doc == NULL) {
1497 xmlFree(URL);
1498 if (fragment != NULL)
1499 xmlFree(fragment);
1500 return(-1);
1501 }
1502 ctxt->incTab[nr]->doc = doc;
1503 /*
1504 * It's possible that the requested URL has been mapped to a
1505 * completely different location (e.g. through a catalog entry).
1506 * To check for this, we compare the URL with that of the doc
1507 * and change it if they disagree (bug 146988).
1508 */
1509 if (!xmlStrEqual(URL, doc->URL)) {
1510 xmlFree(URL);
1511 URL = xmlStrdup(doc->URL);
1512 }
1513 for (i = nr + 1; i < ctxt->incNr; i++) {
1514 if (xmlStrEqual(URL, ctxt->incTab[i]->URI)) {
1515 ctxt->incTab[nr]->count++;
1516 #ifdef DEBUG_XINCLUDE
1517 printf("Increasing %s count since reused\n", URL);
1518 #endif
1519 break;
1520 }
1521 }
1522
1523 /*
1524 * Make sure we have all entities fixed up
1525 */
1526 xmlXIncludeMergeEntities(ctxt, ctxt->doc, doc);
1527
1528 /*
1529 * We don't need the DTD anymore, free up space
1530 if (doc->intSubset != NULL) {
1531 xmlUnlinkNode((xmlNodePtr) doc->intSubset);
1532 xmlFreeNode((xmlNodePtr) doc->intSubset);
1533 doc->intSubset = NULL;
1534 }
1535 if (doc->extSubset != NULL) {
1536 xmlUnlinkNode((xmlNodePtr) doc->extSubset);
1537 xmlFreeNode((xmlNodePtr) doc->extSubset);
1538 doc->extSubset = NULL;
1539 }
1540 */
1541 xmlXIncludeRecurseDoc(ctxt, doc, URL);
1542
1543 loaded:
1544 if (fragment == NULL) {
1545 /*
1546 * Add the top children list as the replacement copy.
1547 */
1548 if (doc == NULL)
1549 {
1550 /* Hopefully a DTD declaration won't be copied from
1551 * the same document */
1552 ctxt->incTab[nr]->inc = xmlCopyNodeList(ctxt->doc->children);
1553 } else {
1554 ctxt->incTab[nr]->inc = xmlXIncludeCopyNodeList(ctxt, ctxt->doc,
1555 doc, doc->children);
1556 }
1557 }
1558 #ifdef LIBXML_XPTR_ENABLED
1559 else {
1560 /*
1561 * Computes the XPointer expression and make a copy used
1562 * as the replacement copy.
1563 */
1564 xmlXPathObjectPtr xptr;
1565 xmlXPathContextPtr xptrctxt;
1566 xmlNodeSetPtr set;
1567
1568 if (doc == NULL) {
1569 xptrctxt = xmlXPtrNewContext(ctxt->doc, ctxt->incTab[nr]->ref,
1570 NULL);
1571 } else {
1572 xptrctxt = xmlXPtrNewContext(doc, NULL, NULL);
1573 }
1574 if (xptrctxt == NULL) {
1575 xmlXIncludeErr(ctxt, ctxt->incTab[nr]->ref,
1576 XML_XINCLUDE_XPTR_FAILED,
1577 "could not create XPointer context\n", NULL);
1578 xmlFree(URL);
1579 xmlFree(fragment);
1580 return(-1);
1581 }
1582 xptr = xmlXPtrEval(fragment, xptrctxt);
1583 if (xptr == NULL) {
1584 xmlXIncludeErr(ctxt, ctxt->incTab[nr]->ref,
1585 XML_XINCLUDE_XPTR_FAILED,
1586 "XPointer evaluation failed: #%s\n",
1587 fragment);
1588 xmlXPathFreeContext(xptrctxt);
1589 xmlFree(URL);
1590 xmlFree(fragment);
1591 return(-1);
1592 }
1593 switch (xptr->type) {
1594 case XPATH_UNDEFINED:
1595 case XPATH_BOOLEAN:
1596 case XPATH_NUMBER:
1597 case XPATH_STRING:
1598 case XPATH_POINT:
1599 case XPATH_USERS:
1600 case XPATH_XSLT_TREE:
1601 xmlXIncludeErr(ctxt, ctxt->incTab[nr]->ref,
1602 XML_XINCLUDE_XPTR_RESULT,
1603 "XPointer is not a range: #%s\n",
1604 fragment);
1605 xmlXPathFreeContext(xptrctxt);
1606 xmlFree(URL);
1607 xmlFree(fragment);
1608 return(-1);
1609 case XPATH_NODESET:
1610 if ((xptr->nodesetval == NULL) ||
1611 (xptr->nodesetval->nodeNr <= 0)) {
1612 xmlXPathFreeContext(xptrctxt);
1613 xmlFree(URL);
1614 xmlFree(fragment);
1615 return(-1);
1616 }
1617
1618 case XPATH_RANGE:
1619 case XPATH_LOCATIONSET:
1620 break;
1621 }
1622 set = xptr->nodesetval;
1623 if (set != NULL) {
1624 for (i = 0;i < set->nodeNr;i++) {
1625 if (set->nodeTab[i] == NULL)
1626 continue;
1627 switch (set->nodeTab[i]->type) {
1628 case XML_ELEMENT_NODE:
1629 case XML_TEXT_NODE:
1630 case XML_CDATA_SECTION_NODE:
1631 case XML_ENTITY_REF_NODE:
1632 case XML_ENTITY_NODE:
1633 case XML_PI_NODE:
1634 case XML_COMMENT_NODE:
1635 case XML_DOCUMENT_NODE:
1636 case XML_HTML_DOCUMENT_NODE:
1637 #ifdef LIBXML_DOCB_ENABLED
1638 case XML_DOCB_DOCUMENT_NODE:
1639 #endif
1640 continue;
1641
1642 case XML_ATTRIBUTE_NODE:
1643 xmlXIncludeErr(ctxt, ctxt->incTab[nr]->ref,
1644 XML_XINCLUDE_XPTR_RESULT,
1645 "XPointer selects an attribute: #%s\n",
1646 fragment);
1647 set->nodeTab[i] = NULL;
1648 continue;
1649 case XML_NAMESPACE_DECL:
1650 xmlXIncludeErr(ctxt, ctxt->incTab[nr]->ref,
1651 XML_XINCLUDE_XPTR_RESULT,
1652 "XPointer selects a namespace: #%s\n",
1653 fragment);
1654 set->nodeTab[i] = NULL;
1655 continue;
1656 case XML_DOCUMENT_TYPE_NODE:
1657 case XML_DOCUMENT_FRAG_NODE:
1658 case XML_NOTATION_NODE:
1659 case XML_DTD_NODE:
1660 case XML_ELEMENT_DECL:
1661 case XML_ATTRIBUTE_DECL:
1662 case XML_ENTITY_DECL:
1663 case XML_XINCLUDE_START:
1664 case XML_XINCLUDE_END:
1665 xmlXIncludeErr(ctxt, ctxt->incTab[nr]->ref,
1666 XML_XINCLUDE_XPTR_RESULT,
1667 "XPointer selects unexpected nodes: #%s\n",
1668 fragment);
1669 set->nodeTab[i] = NULL;
1670 set->nodeTab[i] = NULL;
1671 continue; /* for */
1672 }
1673 }
1674 }
1675 if (doc == NULL) {
1676 ctxt->incTab[nr]->xptr = xptr;
1677 ctxt->incTab[nr]->inc = NULL;
1678 } else {
1679 ctxt->incTab[nr]->inc =
1680 xmlXIncludeCopyXPointer(ctxt, ctxt->doc, doc, xptr);
1681 xmlXPathFreeObject(xptr);
1682 }
1683 xmlXPathFreeContext(xptrctxt);
1684 xmlFree(fragment);
1685 }
1686 #endif
1687
1688 /*
1689 * Do the xml:base fixup if needed
1690 */
1691 if ((doc != NULL) && (URL != NULL) &&
1692 (!(ctxt->parseFlags & XML_PARSE_NOBASEFIX)) &&
1693 (!(doc->parseFlags & XML_PARSE_NOBASEFIX))) {
1694 xmlNodePtr node;
1695 xmlChar *base;
1696 xmlChar *curBase;
1697
1698 /*
1699 * The base is only adjusted if "necessary", i.e. if the xinclude node
1700 * has a base specified, or the URL is relative
1701 */
1702 base = xmlGetNsProp(ctxt->incTab[nr]->ref, BAD_CAST "base",
1703 XML_XML_NAMESPACE);
1704 if (base == NULL) {
1705 /*
1706 * No xml:base on the xinclude node, so we check whether the
1707 * URI base is different than (relative to) the context base
1708 */
1709 curBase = xmlBuildRelativeURI(URL, ctxt->base);
1710 if (curBase == NULL) { /* Error return */
1711 xmlXIncludeErr(ctxt, ctxt->incTab[nr]->ref,
1712 XML_XINCLUDE_HREF_URI,
1713 "trying to build relative URI from %s\n", URL);
1714 } else {
1715 /* If the URI doesn't contain a slash, it's not relative */
1716 if (!xmlStrchr(curBase, (xmlChar) '/'))
1717 xmlFree(curBase);
1718 else
1719 base = curBase;
1720 }
1721 }
1722 if (base != NULL) { /* Adjustment may be needed */
1723 node = ctxt->incTab[nr]->inc;
1724 while (node != NULL) {
1725 /* Only work on element nodes */
1726 if (node->type == XML_ELEMENT_NODE) {
1727 curBase = xmlNodeGetBase(node->doc, node);
1728 /* If no current base, set it */
1729 if (curBase == NULL) {
1730 xmlNodeSetBase(node, base);
1731 } else {
1732 /*
1733 * If the current base is the same as the
1734 * URL of the document, then reset it to be
1735 * the specified xml:base or the relative URI
1736 */
1737 if (xmlStrEqual(curBase, node->doc->URL)) {
1738 xmlNodeSetBase(node, base);
1739 } else {
1740 /*
1741 * If the element already has an xml:base
1742 * set, then relativise it if necessary
1743 */
1744 xmlChar *xmlBase;
1745 xmlBase = xmlGetNsProp(node,
1746 BAD_CAST "base",
1747 XML_XML_NAMESPACE);
1748 if (xmlBase != NULL) {
1749 xmlChar *relBase;
1750 relBase = xmlBuildURI(xmlBase, base);
1751 if (relBase == NULL) { /* error */
1752 xmlXIncludeErr(ctxt,
1753 ctxt->incTab[nr]->ref,
1754 XML_XINCLUDE_HREF_URI,
1755 "trying to rebuild base from %s\n",
1756 xmlBase);
1757 } else {
1758 xmlNodeSetBase(node, relBase);
1759 xmlFree(relBase);
1760 }
1761 xmlFree(xmlBase);
1762 }
1763 }
1764 xmlFree(curBase);
1765 }
1766 }
1767 node = node->next;
1768 }
1769 xmlFree(base);
1770 }
1771 }
1772 if ((nr < ctxt->incNr) && (ctxt->incTab[nr]->doc != NULL) &&
1773 (ctxt->incTab[nr]->count <= 1)) {
1774 #ifdef DEBUG_XINCLUDE
1775 printf("freeing %s\n", ctxt->incTab[nr]->doc->URL);
1776 #endif
1777 xmlFreeDoc(ctxt->incTab[nr]->doc);
1778 ctxt->incTab[nr]->doc = NULL;
1779 }
1780 xmlFree(URL);
1781 return(0);
1782 }
1783
1784 /**
1785 * xmlXIncludeLoadTxt:
1786 * @ctxt: the XInclude context
1787 * @url: the associated URL
1788 * @nr: the xinclude node number
1789 *
1790 * Load the content, and store the result in the XInclude context
1791 *
1792 * Returns 0 in case of success, -1 in case of failure
1793 */
1794 static int
1795 xmlXIncludeLoadTxt(xmlXIncludeCtxtPtr ctxt, const xmlChar *url, int nr) {
1796 xmlParserInputBufferPtr buf;
1797 xmlNodePtr node;
1798 xmlURIPtr uri;
1799 xmlChar *URL;
1800 int i;
1801 xmlChar *encoding = NULL;
1802 xmlCharEncoding enc = (xmlCharEncoding) 0;
1803 xmlParserCtxtPtr pctxt;
1804 xmlParserInputPtr inputStream;
1805 int xinclude_multibyte_fallback_used = 0;
1806
1807 /*
1808 * Check the URL and remove any fragment identifier
1809 */
1810 uri = xmlParseURI((const char *)url);
1811 if (uri == NULL) {
1812 xmlXIncludeErr(ctxt, ctxt->incTab[nr]->ref, XML_XINCLUDE_HREF_URI,
1813 "invalid value URI %s\n", url);
1814 return(-1);
1815 }
1816 if (uri->fragment != NULL) {
1817 xmlXIncludeErr(ctxt, ctxt->incTab[nr]->ref, XML_XINCLUDE_TEXT_FRAGMENT,
1818 "fragment identifier forbidden for text: %s\n",
1819 (const xmlChar *) uri->fragment);
1820 xmlFreeURI(uri);
1821 return(-1);
1822 }
1823 URL = xmlSaveUri(uri);
1824 xmlFreeURI(uri);
1825 if (URL == NULL) {
1826 xmlXIncludeErr(ctxt, ctxt->incTab[nr]->ref, XML_XINCLUDE_HREF_URI,
1827 "invalid value URI %s\n", url);
1828 return(-1);
1829 }
1830
1831 /*
1832 * Handling of references to the local document are done
1833 * directly through ctxt->doc.
1834 */
1835 if (URL[0] == 0) {
1836 xmlXIncludeErr(ctxt, ctxt->incTab[nr]->ref,
1837 XML_XINCLUDE_TEXT_DOCUMENT,
1838 "text serialization of document not available\n", NULL);
1839 xmlFree(URL);
1840 return(-1);
1841 }
1842
1843 /*
1844 * Prevent reloading twice the document.
1845 */
1846 for (i = 0; i < ctxt->txtNr; i++) {
1847 if (xmlStrEqual(URL, ctxt->txturlTab[i])) {
1848 node = xmlCopyNode(ctxt->txtTab[i], 1);
1849 goto loaded;
1850 }
1851 }
1852 /*
1853 * Try to get the encoding if available
1854 */
1855 if ((ctxt->incTab[nr] != NULL) && (ctxt->incTab[nr]->ref != NULL)) {
1856 encoding = xmlGetProp(ctxt->incTab[nr]->ref, XINCLUDE_PARSE_ENCODING);
1857 }
1858 if (encoding != NULL) {
1859 /*
1860 * TODO: we should not have to remap to the xmlCharEncoding
1861 * predefined set, a better interface than
1862 * xmlParserInputBufferCreateFilename should allow any
1863 * encoding supported by iconv
1864 */
1865 enc = xmlParseCharEncoding((const char *) encoding);
1866 if (enc == XML_CHAR_ENCODING_ERROR) {
1867 xmlXIncludeErr(ctxt, ctxt->incTab[nr]->ref,
1868 XML_XINCLUDE_UNKNOWN_ENCODING,
1869 "encoding %s not supported\n", encoding);
1870 xmlFree(encoding);
1871 xmlFree(URL);
1872 return(-1);
1873 }
1874 xmlFree(encoding);
1875 }
1876
1877 /*
1878 * Load it.
1879 */
1880 pctxt = xmlNewParserCtxt();
1881 inputStream = xmlLoadExternalEntity((const char*)URL, NULL, pctxt);
1882 if(inputStream == NULL) {
1883 xmlFreeParserCtxt(pctxt);
1884 xmlFree(URL);
1885 return(-1);
1886 }
1887 buf = inputStream->buf;
1888 if (buf == NULL) {
1889 xmlFreeInputStream (inputStream);
1890 xmlFreeParserCtxt(pctxt);
1891 xmlFree(URL);
1892 return(-1);
1893 }
1894 if (buf->encoder)
1895 xmlCharEncCloseFunc(buf->encoder);
1896 buf->encoder = xmlGetCharEncodingHandler(enc);
1897 node = xmlNewText(NULL);
1898
1899 /*
1900 * Scan all chars from the resource and add the to the node
1901 */
1902 xinclude_multibyte_fallback:
1903 while (xmlParserInputBufferRead(buf, 128) > 0) {
1904 int len;
1905 const xmlChar *content;
1906
1907 content = xmlBufContent(buf->buffer);
1908 len = xmlBufLength(buf->buffer);
1909 for (i = 0;i < len;) {
1910 int cur;
1911 int l;
1912
1913 cur = xmlStringCurrentChar(NULL, &content[i], &l);
1914 if (!IS_CHAR(cur)) {
1915 /* Handle splitted multibyte char at buffer boundary */
1916 if (((len - i) < 4) && (!xinclude_multibyte_fallback_used)) {
1917 xinclude_multibyte_fallback_used = 1;
1918 xmlBufShrink(buf->buffer, i);
1919 goto xinclude_multibyte_fallback;
1920 } else {
1921 xmlXIncludeErr(ctxt, ctxt->incTab[nr]->ref,
1922 XML_XINCLUDE_INVALID_CHAR,
1923 "%s contains invalid char\n", URL);
1924 xmlFreeParserInputBuffer(buf);
1925 xmlFree(URL);
1926 return(-1);
1927 }
1928 } else {
1929 xinclude_multibyte_fallback_used = 0;
1930 xmlNodeAddContentLen(node, &content[i], l);
1931 }
1932 i += l;
1933 }
1934 xmlBufShrink(buf->buffer, len);
1935 }
1936 xmlFreeParserCtxt(pctxt);
1937 xmlXIncludeAddTxt(ctxt, node, URL);
1938 xmlFreeInputStream(inputStream);
1939
1940 loaded:
1941 /*
1942 * Add the element as the replacement copy.
1943 */
1944 ctxt->incTab[nr]->inc = node;
1945 xmlFree(URL);
1946 return(0);
1947 }
1948
1949 /**
1950 * xmlXIncludeLoadFallback:
1951 * @ctxt: the XInclude context
1952 * @fallback: the fallback node
1953 * @nr: the xinclude node number
1954 *
1955 * Load the content of the fallback node, and store the result
1956 * in the XInclude context
1957 *
1958 * Returns 0 in case of success, -1 in case of failure
1959 */
1960 static int
1961 xmlXIncludeLoadFallback(xmlXIncludeCtxtPtr ctxt, xmlNodePtr fallback, int nr) {
1962 xmlXIncludeCtxtPtr newctxt;
1963 int ret = 0;
1964
1965 if ((fallback == NULL) || (fallback->type == XML_NAMESPACE_DECL) ||
1966 (ctxt == NULL))
1967 return(-1);
1968 if (fallback->children != NULL) {
1969 /*
1970 * It's possible that the fallback also has 'includes'
1971 * (Bug 129969), so we re-process the fallback just in case
1972 */
1973 newctxt = xmlXIncludeNewContext(ctxt->doc);
1974 if (newctxt == NULL)
1975 return (-1);
1976 newctxt->_private = ctxt->_private;
1977 newctxt->base = xmlStrdup(ctxt->base); /* Inherit the base from the exi sting context */
1978 xmlXIncludeSetFlags(newctxt, ctxt->parseFlags);
1979 ret = xmlXIncludeDoProcess(newctxt, ctxt->doc, fallback->children);
1980 if (ctxt->nbErrors > 0)
1981 ret = -1;
1982 else if (ret > 0)
1983 ret = 0; /* xmlXIncludeDoProcess can return +ve number */
1984 xmlXIncludeFreeContext(newctxt);
1985
1986 ctxt->incTab[nr]->inc = xmlDocCopyNodeList(ctxt->doc,
1987 fallback->children);
1988 } else {
1989 ctxt->incTab[nr]->inc = NULL;
1990 ctxt->incTab[nr]->emptyFb = 1; /* flag empty callback */
1991 }
1992 return(ret);
1993 }
1994
1995 /************************************************************************
1996 * *
1997 * XInclude Processing *
1998 * *
1999 ************************************************************************/
2000
2001 /**
2002 * xmlXIncludePreProcessNode:
2003 * @ctxt: an XInclude context
2004 * @node: an XInclude node
2005 *
2006 * Implement the XInclude preprocessing, currently just adding the element
2007 * for further processing.
2008 *
2009 * Returns the result list or NULL in case of error
2010 */
2011 static xmlNodePtr
2012 xmlXIncludePreProcessNode(xmlXIncludeCtxtPtr ctxt, xmlNodePtr node) {
2013 xmlXIncludeAddNode(ctxt, node);
2014 return(NULL);
2015 }
2016
2017 /**
2018 * xmlXIncludeLoadNode:
2019 * @ctxt: an XInclude context
2020 * @nr: the node number
2021 *
2022 * Find and load the infoset replacement for the given node.
2023 *
2024 * Returns 0 if substitution succeeded, -1 if some processing failed
2025 */
2026 static int
2027 xmlXIncludeLoadNode(xmlXIncludeCtxtPtr ctxt, int nr) {
2028 xmlNodePtr cur;
2029 xmlChar *href;
2030 xmlChar *parse;
2031 xmlChar *base;
2032 xmlChar *oldBase;
2033 xmlChar *URI;
2034 int xml = 1; /* default Issue 64 */
2035 int ret;
2036
2037 if (ctxt == NULL)
2038 return(-1);
2039 if ((nr < 0) || (nr >= ctxt->incNr))
2040 return(-1);
2041 cur = ctxt->incTab[nr]->ref;
2042 if (cur == NULL)
2043 return(-1);
2044
2045 /*
2046 * read the attributes
2047 */
2048 href = xmlXIncludeGetProp(ctxt, cur, XINCLUDE_HREF);
2049 if (href == NULL) {
2050 href = xmlStrdup(BAD_CAST ""); /* @@@@ href is now optional */
2051 if (href == NULL)
2052 return(-1);
2053 }
2054 parse = xmlXIncludeGetProp(ctxt, cur, XINCLUDE_PARSE);
2055 if (parse != NULL) {
2056 if (xmlStrEqual(parse, XINCLUDE_PARSE_XML))
2057 xml = 1;
2058 else if (xmlStrEqual(parse, XINCLUDE_PARSE_TEXT))
2059 xml = 0;
2060 else {
2061 xmlXIncludeErr(ctxt, ctxt->incTab[nr]->ref,
2062 XML_XINCLUDE_PARSE_VALUE,
2063 "invalid value %s for 'parse'\n", parse);
2064 if (href != NULL)
2065 xmlFree(href);
2066 if (parse != NULL)
2067 xmlFree(parse);
2068 return(-1);
2069 }
2070 }
2071
2072 /*
2073 * compute the URI
2074 */
2075 base = xmlNodeGetBase(ctxt->doc, cur);
2076 if (base == NULL) {
2077 URI = xmlBuildURI(href, ctxt->doc->URL);
2078 } else {
2079 URI = xmlBuildURI(href, base);
2080 }
2081 if (URI == NULL) {
2082 xmlChar *escbase;
2083 xmlChar *eschref;
2084 /*
2085 * Some escaping may be needed
2086 */
2087 escbase = xmlURIEscape(base);
2088 eschref = xmlURIEscape(href);
2089 URI = xmlBuildURI(eschref, escbase);
2090 if (escbase != NULL)
2091 xmlFree(escbase);
2092 if (eschref != NULL)
2093 xmlFree(eschref);
2094 }
2095 if (URI == NULL) {
2096 xmlXIncludeErr(ctxt, ctxt->incTab[nr]->ref,
2097 XML_XINCLUDE_HREF_URI, "failed build URL\n", NULL);
2098 if (parse != NULL)
2099 xmlFree(parse);
2100 if (href != NULL)
2101 xmlFree(href);
2102 if (base != NULL)
2103 xmlFree(base);
2104 return(-1);
2105 }
2106 #ifdef DEBUG_XINCLUDE
2107 xmlGenericError(xmlGenericErrorContext, "parse: %s\n",
2108 xml ? "xml": "text");
2109 xmlGenericError(xmlGenericErrorContext, "URI: %s\n", URI);
2110 #endif
2111
2112 /*
2113 * Save the base for this include (saving the current one)
2114 */
2115 oldBase = ctxt->base;
2116 ctxt->base = base;
2117
2118 if (xml) {
2119 ret = xmlXIncludeLoadDoc(ctxt, URI, nr);
2120 /* xmlXIncludeGetFragment(ctxt, cur, URI); */
2121 } else {
2122 ret = xmlXIncludeLoadTxt(ctxt, URI, nr);
2123 }
2124
2125 /*
2126 * Restore the original base before checking for fallback
2127 */
2128 ctxt->base = oldBase;
2129
2130 if (ret < 0) {
2131 xmlNodePtr children;
2132
2133 /*
2134 * Time to try a fallback if availble
2135 */
2136 #ifdef DEBUG_XINCLUDE
2137 xmlGenericError(xmlGenericErrorContext, "error looking for fallback\n");
2138 #endif
2139 children = cur->children;
2140 while (children != NULL) {
2141 if ((children->type == XML_ELEMENT_NODE) &&
2142 (children->ns != NULL) &&
2143 (xmlStrEqual(children->name, XINCLUDE_FALLBACK)) &&
2144 ((xmlStrEqual(children->ns->href, XINCLUDE_NS)) ||
2145 (xmlStrEqual(children->ns->href, XINCLUDE_OLD_NS)))) {
2146 ret = xmlXIncludeLoadFallback(ctxt, children, nr);
2147 if (ret == 0)
2148 break;
2149 }
2150 children = children->next;
2151 }
2152 }
2153 if (ret < 0) {
2154 xmlXIncludeErr(ctxt, ctxt->incTab[nr]->ref,
2155 XML_XINCLUDE_NO_FALLBACK,
2156 "could not load %s, and no fallback was found\n",
2157 URI);
2158 }
2159
2160 /*
2161 * Cleanup
2162 */
2163 if (URI != NULL)
2164 xmlFree(URI);
2165 if (parse != NULL)
2166 xmlFree(parse);
2167 if (href != NULL)
2168 xmlFree(href);
2169 if (base != NULL)
2170 xmlFree(base);
2171 return(0);
2172 }
2173
2174 /**
2175 * xmlXIncludeIncludeNode:
2176 * @ctxt: an XInclude context
2177 * @nr: the node number
2178 *
2179 * Inplement the infoset replacement for the given node
2180 *
2181 * Returns 0 if substitution succeeded, -1 if some processing failed
2182 */
2183 static int
2184 xmlXIncludeIncludeNode(xmlXIncludeCtxtPtr ctxt, int nr) {
2185 xmlNodePtr cur, end, list, tmp;
2186
2187 if (ctxt == NULL)
2188 return(-1);
2189 if ((nr < 0) || (nr >= ctxt->incNr))
2190 return(-1);
2191 cur = ctxt->incTab[nr]->ref;
2192 if ((cur == NULL) || (cur->type == XML_NAMESPACE_DECL))
2193 return(-1);
2194
2195 /*
2196 * If we stored an XPointer a late computation may be needed
2197 */
2198 if ((ctxt->incTab[nr]->inc == NULL) &&
2199 (ctxt->incTab[nr]->xptr != NULL)) {
2200 ctxt->incTab[nr]->inc =
2201 xmlXIncludeCopyXPointer(ctxt, ctxt->doc, ctxt->doc,
2202 ctxt->incTab[nr]->xptr);
2203 xmlXPathFreeObject(ctxt->incTab[nr]->xptr);
2204 ctxt->incTab[nr]->xptr = NULL;
2205 }
2206 list = ctxt->incTab[nr]->inc;
2207 ctxt->incTab[nr]->inc = NULL;
2208
2209 /*
2210 * Check against the risk of generating a multi-rooted document
2211 */
2212 if ((cur->parent != NULL) &&
2213 (cur->parent->type != XML_ELEMENT_NODE)) {
2214 int nb_elem = 0;
2215
2216 tmp = list;
2217 while (tmp != NULL) {
2218 if (tmp->type == XML_ELEMENT_NODE)
2219 nb_elem++;
2220 tmp = tmp->next;
2221 }
2222 if (nb_elem > 1) {
2223 xmlXIncludeErr(ctxt, ctxt->incTab[nr]->ref,
2224 XML_XINCLUDE_MULTIPLE_ROOT,
2225 "XInclude error: would result in multiple root nodes\n",
2226 NULL);
2227 return(-1);
2228 }
2229 }
2230
2231 if (ctxt->parseFlags & XML_PARSE_NOXINCNODE) {
2232 /*
2233 * Add the list of nodes
2234 */
2235 while (list != NULL) {
2236 end = list;
2237 list = list->next;
2238
2239 xmlAddPrevSibling(cur, end);
2240 }
2241 xmlUnlinkNode(cur);
2242 xmlFreeNode(cur);
2243 } else {
2244 /*
2245 * Change the current node as an XInclude start one, and add an
2246 * XInclude end one
2247 */
2248 cur->type = XML_XINCLUDE_START;
2249 end = xmlNewDocNode(cur->doc, cur->ns, cur->name, NULL);
2250 if (end == NULL) {
2251 xmlXIncludeErr(ctxt, ctxt->incTab[nr]->ref,
2252 XML_XINCLUDE_BUILD_FAILED,
2253 "failed to build node\n", NULL);
2254 return(-1);
2255 }
2256 end->type = XML_XINCLUDE_END;
2257 xmlAddNextSibling(cur, end);
2258
2259 /*
2260 * Add the list of nodes
2261 */
2262 while (list != NULL) {
2263 cur = list;
2264 list = list->next;
2265
2266 xmlAddPrevSibling(end, cur);
2267 }
2268 }
2269
2270
2271 return(0);
2272 }
2273
2274 /**
2275 * xmlXIncludeTestNode:
2276 * @ctxt: the XInclude processing context
2277 * @node: an XInclude node
2278 *
2279 * test if the node is an XInclude node
2280 *
2281 * Returns 1 true, 0 otherwise
2282 */
2283 static int
2284 xmlXIncludeTestNode(xmlXIncludeCtxtPtr ctxt, xmlNodePtr node) {
2285 if (node == NULL)
2286 return(0);
2287 if (node->type != XML_ELEMENT_NODE)
2288 return(0);
2289 if (node->ns == NULL)
2290 return(0);
2291 if ((xmlStrEqual(node->ns->href, XINCLUDE_NS)) ||
2292 (xmlStrEqual(node->ns->href, XINCLUDE_OLD_NS))) {
2293 if (xmlStrEqual(node->ns->href, XINCLUDE_OLD_NS)) {
2294 if (ctxt->legacy == 0) {
2295 #if 0 /* wait for the XML Core Working Group to get something stable ! */
2296 xmlXIncludeWarn(ctxt, node, XML_XINCLUDE_DEPRECATED_NS,
2297 "Deprecated XInclude namespace found, use %s",
2298 XINCLUDE_NS);
2299 #endif
2300 ctxt->legacy = 1;
2301 }
2302 }
2303 if (xmlStrEqual(node->name, XINCLUDE_NODE)) {
2304 xmlNodePtr child = node->children;
2305 int nb_fallback = 0;
2306
2307 while (child != NULL) {
2308 if ((child->type == XML_ELEMENT_NODE) &&
2309 (child->ns != NULL) &&
2310 ((xmlStrEqual(child->ns->href, XINCLUDE_NS)) ||
2311 (xmlStrEqual(child->ns->href, XINCLUDE_OLD_NS)))) {
2312 if (xmlStrEqual(child->name, XINCLUDE_NODE)) {
2313 xmlXIncludeErr(ctxt, node,
2314 XML_XINCLUDE_INCLUDE_IN_INCLUDE,
2315 "%s has an 'include' child\n",
2316 XINCLUDE_NODE);
2317 return(0);
2318 }
2319 if (xmlStrEqual(child->name, XINCLUDE_FALLBACK)) {
2320 nb_fallback++;
2321 }
2322 }
2323 child = child->next;
2324 }
2325 if (nb_fallback > 1) {
2326 xmlXIncludeErr(ctxt, node, XML_XINCLUDE_FALLBACKS_IN_INCLUDE,
2327 "%s has multiple fallback children\n",
2328 XINCLUDE_NODE);
2329 return(0);
2330 }
2331 return(1);
2332 }
2333 if (xmlStrEqual(node->name, XINCLUDE_FALLBACK)) {
2334 if ((node->parent == NULL) ||
2335 (node->parent->type != XML_ELEMENT_NODE) ||
2336 (node->parent->ns == NULL) ||
2337 ((!xmlStrEqual(node->parent->ns->href, XINCLUDE_NS)) &&
2338 (!xmlStrEqual(node->parent->ns->href, XINCLUDE_OLD_NS))) ||
2339 (!xmlStrEqual(node->parent->name, XINCLUDE_NODE))) {
2340 xmlXIncludeErr(ctxt, node,
2341 XML_XINCLUDE_FALLBACK_NOT_IN_INCLUDE,
2342 "%s is not the child of an 'include'\n",
2343 XINCLUDE_FALLBACK);
2344 }
2345 }
2346 }
2347 return(0);
2348 }
2349
2350 /**
2351 * xmlXIncludeDoProcess:
2352 * @ctxt: the XInclude processing context
2353 * @doc: an XML document
2354 * @tree: the top of the tree to process
2355 *
2356 * Implement the XInclude substitution on the XML document @doc
2357 *
2358 * Returns 0 if no substitution were done, -1 if some processing failed
2359 * or the number of substitutions done.
2360 */
2361 static int
2362 xmlXIncludeDoProcess(xmlXIncludeCtxtPtr ctxt, xmlDocPtr doc, xmlNodePtr tree) {
2363 xmlNodePtr cur;
2364 int ret = 0;
2365 int i, start;
2366
2367 if ((doc == NULL) || (tree == NULL) || (tree->type == XML_NAMESPACE_DECL))
2368 return(-1);
2369 if (ctxt == NULL)
2370 return(-1);
2371
2372 if (doc->URL != NULL) {
2373 ret = xmlXIncludeURLPush(ctxt, doc->URL);
2374 if (ret < 0)
2375 return(-1);
2376 }
2377 start = ctxt->incNr;
2378
2379 /*
2380 * First phase: lookup the elements in the document
2381 */
2382 cur = tree;
2383 if (xmlXIncludeTestNode(ctxt, cur) == 1)
2384 xmlXIncludePreProcessNode(ctxt, cur);
2385 while ((cur != NULL) && (cur != tree->parent)) {
2386 /* TODO: need to work on entities -> stack */
2387 if ((cur->children != NULL) &&
2388 (cur->children->type != XML_ENTITY_DECL) &&
2389 (cur->children->type != XML_XINCLUDE_START) &&
2390 (cur->children->type != XML_XINCLUDE_END)) {
2391 cur = cur->children;
2392 if (xmlXIncludeTestNode(ctxt, cur))
2393 xmlXIncludePreProcessNode(ctxt, cur);
2394 } else if (cur->next != NULL) {
2395 cur = cur->next;
2396 if (xmlXIncludeTestNode(ctxt, cur))
2397 xmlXIncludePreProcessNode(ctxt, cur);
2398 } else {
2399 if (cur == tree)
2400 break;
2401 do {
2402 cur = cur->parent;
2403 if ((cur == NULL) || (cur == tree->parent))
2404 break; /* do */
2405 if (cur->next != NULL) {
2406 cur = cur->next;
2407 if (xmlXIncludeTestNode(ctxt, cur))
2408 xmlXIncludePreProcessNode(ctxt, cur);
2409 break; /* do */
2410 }
2411 } while (cur != NULL);
2412 }
2413 }
2414
2415 /*
2416 * Second Phase : collect the infosets fragments
2417 */
2418 for (i = start;i < ctxt->incNr; i++) {
2419 xmlXIncludeLoadNode(ctxt, i);
2420 ret++;
2421 }
2422
2423 /*
2424 * Third phase: extend the original document infoset.
2425 *
2426 * Originally we bypassed the inclusion if there were any errors
2427 * encountered on any of the XIncludes. A bug was raised (bug
2428 * 132588) requesting that we output the XIncludes without error,
2429 * so the check for inc!=NULL || xptr!=NULL was put in. This may
2430 * give some other problems in the future, but for now it seems to
2431 * work ok.
2432 *
2433 */
2434 for (i = ctxt->incBase;i < ctxt->incNr; i++) {
2435 if ((ctxt->incTab[i]->inc != NULL) ||
2436 (ctxt->incTab[i]->xptr != NULL) ||
2437 (ctxt->incTab[i]->emptyFb != 0)) /* (empty fallback) */
2438 xmlXIncludeIncludeNode(ctxt, i);
2439 }
2440
2441 if (doc->URL != NULL)
2442 xmlXIncludeURLPop(ctxt);
2443 return(ret);
2444 }
2445
2446 /**
2447 * xmlXIncludeSetFlags:
2448 * @ctxt: an XInclude processing context
2449 * @flags: a set of xmlParserOption used for parsing XML includes
2450 *
2451 * Set the flags used for further processing of XML resources.
2452 *
2453 * Returns 0 in case of success and -1 in case of error.
2454 */
2455 int
2456 xmlXIncludeSetFlags(xmlXIncludeCtxtPtr ctxt, int flags) {
2457 if (ctxt == NULL)
2458 return(-1);
2459 ctxt->parseFlags = flags;
2460 return(0);
2461 }
2462
2463 /**
2464 * xmlXIncludeProcessTreeFlagsData:
2465 * @tree: an XML node
2466 * @flags: a set of xmlParserOption used for parsing XML includes
2467 * @data: application data that will be passed to the parser context
2468 * in the _private field of the parser context(s)
2469 *
2470 * Implement the XInclude substitution on the XML node @tree
2471 *
2472 * Returns 0 if no substitution were done, -1 if some processing failed
2473 * or the number of substitutions done.
2474 */
2475
2476 int
2477 xmlXIncludeProcessTreeFlagsData(xmlNodePtr tree, int flags, void *data) {
2478 xmlXIncludeCtxtPtr ctxt;
2479 int ret = 0;
2480
2481 if ((tree == NULL) || (tree->type == XML_NAMESPACE_DECL) ||
2482 (tree->doc == NULL))
2483 return(-1);
2484
2485 ctxt = xmlXIncludeNewContext(tree->doc);
2486 if (ctxt == NULL)
2487 return(-1);
2488 ctxt->_private = data;
2489 ctxt->base = xmlStrdup((xmlChar *)tree->doc->URL);
2490 xmlXIncludeSetFlags(ctxt, flags);
2491 ret = xmlXIncludeDoProcess(ctxt, tree->doc, tree);
2492 if ((ret >= 0) && (ctxt->nbErrors > 0))
2493 ret = -1;
2494
2495 xmlXIncludeFreeContext(ctxt);
2496 return(ret);
2497 }
2498
2499 /**
2500 * xmlXIncludeProcessFlagsData:
2501 * @doc: an XML document
2502 * @flags: a set of xmlParserOption used for parsing XML includes
2503 * @data: application data that will be passed to the parser context
2504 * in the _private field of the parser context(s)
2505 *
2506 * Implement the XInclude substitution on the XML document @doc
2507 *
2508 * Returns 0 if no substitution were done, -1 if some processing failed
2509 * or the number of substitutions done.
2510 */
2511 int
2512 xmlXIncludeProcessFlagsData(xmlDocPtr doc, int flags, void *data) {
2513 xmlNodePtr tree;
2514
2515 if (doc == NULL)
2516 return(-1);
2517 tree = xmlDocGetRootElement(doc);
2518 if (tree == NULL)
2519 return(-1);
2520 return(xmlXIncludeProcessTreeFlagsData(tree, flags, data));
2521 }
2522
2523 /**
2524 * xmlXIncludeProcessFlags:
2525 * @doc: an XML document
2526 * @flags: a set of xmlParserOption used for parsing XML includes
2527 *
2528 * Implement the XInclude substitution on the XML document @doc
2529 *
2530 * Returns 0 if no substitution were done, -1 if some processing failed
2531 * or the number of substitutions done.
2532 */
2533 int
2534 xmlXIncludeProcessFlags(xmlDocPtr doc, int flags) {
2535 return xmlXIncludeProcessFlagsData(doc, flags, NULL);
2536 }
2537
2538 /**
2539 * xmlXIncludeProcess:
2540 * @doc: an XML document
2541 *
2542 * Implement the XInclude substitution on the XML document @doc
2543 *
2544 * Returns 0 if no substitution were done, -1 if some processing failed
2545 * or the number of substitutions done.
2546 */
2547 int
2548 xmlXIncludeProcess(xmlDocPtr doc) {
2549 return(xmlXIncludeProcessFlags(doc, 0));
2550 }
2551
2552 /**
2553 * xmlXIncludeProcessTreeFlags:
2554 * @tree: a node in an XML document
2555 * @flags: a set of xmlParserOption used for parsing XML includes
2556 *
2557 * Implement the XInclude substitution for the given subtree
2558 *
2559 * Returns 0 if no substitution were done, -1 if some processing failed
2560 * or the number of substitutions done.
2561 */
2562 int
2563 xmlXIncludeProcessTreeFlags(xmlNodePtr tree, int flags) {
2564 xmlXIncludeCtxtPtr ctxt;
2565 int ret = 0;
2566
2567 if ((tree == NULL) || (tree->type == XML_NAMESPACE_DECL) ||
2568 (tree->doc == NULL))
2569 return(-1);
2570 ctxt = xmlXIncludeNewContext(tree->doc);
2571 if (ctxt == NULL)
2572 return(-1);
2573 ctxt->base = xmlNodeGetBase(tree->doc, tree);
2574 xmlXIncludeSetFlags(ctxt, flags);
2575 ret = xmlXIncludeDoProcess(ctxt, tree->doc, tree);
2576 if ((ret >= 0) && (ctxt->nbErrors > 0))
2577 ret = -1;
2578
2579 xmlXIncludeFreeContext(ctxt);
2580 return(ret);
2581 }
2582
2583 /**
2584 * xmlXIncludeProcessTree:
2585 * @tree: a node in an XML document
2586 *
2587 * Implement the XInclude substitution for the given subtree
2588 *
2589 * Returns 0 if no substitution were done, -1 if some processing failed
2590 * or the number of substitutions done.
2591 */
2592 int
2593 xmlXIncludeProcessTree(xmlNodePtr tree) {
2594 return(xmlXIncludeProcessTreeFlags(tree, 0));
2595 }
2596
2597 /**
2598 * xmlXIncludeProcessNode:
2599 * @ctxt: an existing XInclude context
2600 * @node: a node in an XML document
2601 *
2602 * Implement the XInclude substitution for the given subtree reusing
2603 * the informations and data coming from the given context.
2604 *
2605 * Returns 0 if no substitution were done, -1 if some processing failed
2606 * or the number of substitutions done.
2607 */
2608 int
2609 xmlXIncludeProcessNode(xmlXIncludeCtxtPtr ctxt, xmlNodePtr node) {
2610 int ret = 0;
2611
2612 if ((node == NULL) || (node->type == XML_NAMESPACE_DECL) ||
2613 (node->doc == NULL) || (ctxt == NULL))
2614 return(-1);
2615 ret = xmlXIncludeDoProcess(ctxt, node->doc, node);
2616 if ((ret >= 0) && (ctxt->nbErrors > 0))
2617 ret = -1;
2618 return(ret);
2619 }
2620
2621 #else /* !LIBXML_XINCLUDE_ENABLED */
2622 #endif
2623 #define bottom_xinclude
2624 #include "elfgcchack.h"
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