forked from php/php-src
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathlibxml.c
1366 lines (1169 loc) · 37.8 KB
/
libxml.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/*
+----------------------------------------------------------------------+
| PHP Version 7 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2017 The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 3.01 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.php.net/license/3_01.txt |
| If you did not receive a copy of the PHP license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| [email protected] so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Shane Caraveo <[email protected]> |
| Wez Furlong <[email protected]> |
+----------------------------------------------------------------------+
*/
/* $Id$ */
#define IS_EXT_MODULE
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "php.h"
#include "SAPI.h"
#define PHP_XML_INTERNAL
#include "zend_variables.h"
#include "ext/standard/php_string.h"
#include "ext/standard/info.h"
#include "ext/standard/file.h"
#if HAVE_LIBXML
#include <libxml/parser.h>
#include <libxml/parserInternals.h>
#include <libxml/tree.h>
#include <libxml/uri.h>
#include <libxml/xmlerror.h>
#include <libxml/xmlsave.h>
#ifdef LIBXML_SCHEMAS_ENABLED
#include <libxml/relaxng.h>
#include <libxml/xmlschemas.h>
#endif
#include "php_libxml.h"
#define PHP_LIBXML_ERROR 0
#define PHP_LIBXML_CTX_ERROR 1
#define PHP_LIBXML_CTX_WARNING 2
/* a true global for initialization */
static int _php_libxml_initialized = 0;
static int _php_libxml_per_request_initialization = 1;
static xmlExternalEntityLoader _php_libxml_default_entity_loader;
typedef struct _php_libxml_func_handler {
php_libxml_export_node export_func;
} php_libxml_func_handler;
static HashTable php_libxml_exports;
static ZEND_DECLARE_MODULE_GLOBALS(libxml)
static PHP_GINIT_FUNCTION(libxml);
static PHP_FUNCTION(libxml_set_streams_context);
static PHP_FUNCTION(libxml_use_internal_errors);
static PHP_FUNCTION(libxml_get_last_error);
static PHP_FUNCTION(libxml_clear_errors);
static PHP_FUNCTION(libxml_get_errors);
static PHP_FUNCTION(libxml_set_external_entity_loader);
static PHP_FUNCTION(libxml_disable_entity_loader);
static zend_class_entry *libxmlerror_class_entry;
/* {{{ dynamically loadable module stuff */
#ifdef COMPILE_DL_LIBXML
#ifdef ZTS
ZEND_TSRMLS_CACHE_DEFINE()
#endif
ZEND_GET_MODULE(libxml)
#endif /* COMPILE_DL_LIBXML */
/* }}} */
/* {{{ function prototypes */
static PHP_MINIT_FUNCTION(libxml);
static PHP_RINIT_FUNCTION(libxml);
static PHP_RSHUTDOWN_FUNCTION(libxml);
static PHP_MSHUTDOWN_FUNCTION(libxml);
static PHP_MINFO_FUNCTION(libxml);
static int php_libxml_post_deactivate(void);
/* }}} */
/* {{{ arginfo */
ZEND_BEGIN_ARG_INFO(arginfo_libxml_set_streams_context, 0)
ZEND_ARG_INFO(0, context)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_libxml_use_internal_errors, 0, 0, 0)
ZEND_ARG_INFO(0, use_errors)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO(arginfo_libxml_get_last_error, 0)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO(arginfo_libxml_get_errors, 0)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO(arginfo_libxml_clear_errors, 0)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_libxml_disable_entity_loader, 0, 0, 0)
ZEND_ARG_INFO(0, disable)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_libxml_set_external_entity_loader, 0, 0, 1)
ZEND_ARG_INFO(0, resolver_function)
ZEND_END_ARG_INFO()
/* }}} */
/* {{{ extension definition structures */
static const zend_function_entry libxml_functions[] = {
PHP_FE(libxml_set_streams_context, arginfo_libxml_set_streams_context)
PHP_FE(libxml_use_internal_errors, arginfo_libxml_use_internal_errors)
PHP_FE(libxml_get_last_error, arginfo_libxml_get_last_error)
PHP_FE(libxml_clear_errors, arginfo_libxml_clear_errors)
PHP_FE(libxml_get_errors, arginfo_libxml_get_errors)
PHP_FE(libxml_disable_entity_loader, arginfo_libxml_disable_entity_loader)
PHP_FE(libxml_set_external_entity_loader, arginfo_libxml_set_external_entity_loader)
PHP_FE_END
};
zend_module_entry libxml_module_entry = {
STANDARD_MODULE_HEADER,
"libxml", /* extension name */
libxml_functions, /* extension function list */
PHP_MINIT(libxml), /* extension-wide startup function */
PHP_MSHUTDOWN(libxml), /* extension-wide shutdown function */
PHP_RINIT(libxml), /* per-request startup function */
PHP_RSHUTDOWN(libxml), /* per-request shutdown function */
PHP_MINFO(libxml), /* information function */
PHP_LIBXML_VERSION,
PHP_MODULE_GLOBALS(libxml), /* globals descriptor */
PHP_GINIT(libxml), /* globals ctor */
NULL, /* globals dtor */
php_libxml_post_deactivate, /* post deactivate */
STANDARD_MODULE_PROPERTIES_EX
};
/* }}} */
/* {{{ internal functions for interoperability */
static int php_libxml_clear_object(php_libxml_node_object *object)
{
if (object->properties) {
object->properties = NULL;
}
php_libxml_decrement_node_ptr(object);
return php_libxml_decrement_doc_ref(object);
}
static int php_libxml_unregister_node(xmlNodePtr nodep)
{
php_libxml_node_object *wrapper;
php_libxml_node_ptr *nodeptr = nodep->_private;
if (nodeptr != NULL) {
wrapper = nodeptr->_private;
if (wrapper) {
php_libxml_clear_object(wrapper);
} else {
if (nodeptr->node != NULL && nodeptr->node->type != XML_DOCUMENT_NODE) {
nodeptr->node->_private = NULL;
}
nodeptr->node = NULL;
}
}
return -1;
}
static void php_libxml_node_free(xmlNodePtr node)
{
if(node) {
if (node->_private != NULL) {
((php_libxml_node_ptr *) node->_private)->node = NULL;
}
switch (node->type) {
case XML_ATTRIBUTE_NODE:
xmlFreeProp((xmlAttrPtr) node);
break;
case XML_ENTITY_DECL:
case XML_ELEMENT_DECL:
case XML_ATTRIBUTE_DECL:
break;
case XML_NOTATION_NODE:
/* These require special handling */
if (node->name != NULL) {
xmlFree((char *) node->name);
}
if (((xmlEntityPtr) node)->ExternalID != NULL) {
xmlFree((char *) ((xmlEntityPtr) node)->ExternalID);
}
if (((xmlEntityPtr) node)->SystemID != NULL) {
xmlFree((char *) ((xmlEntityPtr) node)->SystemID);
}
xmlFree(node);
break;
case XML_NAMESPACE_DECL:
if (node->ns) {
xmlFreeNs(node->ns);
node->ns = NULL;
}
node->type = XML_ELEMENT_NODE;
default:
xmlFreeNode(node);
}
}
}
PHP_LIBXML_API void php_libxml_node_free_list(xmlNodePtr node)
{
xmlNodePtr curnode;
if (node != NULL) {
curnode = node;
while (curnode != NULL) {
node = curnode;
switch (node->type) {
/* Skip property freeing for the following types */
case XML_NOTATION_NODE:
case XML_ENTITY_DECL:
break;
case XML_ENTITY_REF_NODE:
php_libxml_node_free_list((xmlNodePtr) node->properties);
break;
case XML_ATTRIBUTE_NODE:
if ((node->doc != NULL) && (((xmlAttrPtr) node)->atype == XML_ATTRIBUTE_ID)) {
xmlRemoveID(node->doc, (xmlAttrPtr) node);
}
case XML_ATTRIBUTE_DECL:
case XML_DTD_NODE:
case XML_DOCUMENT_TYPE_NODE:
case XML_NAMESPACE_DECL:
case XML_TEXT_NODE:
php_libxml_node_free_list(node->children);
break;
default:
php_libxml_node_free_list(node->children);
php_libxml_node_free_list((xmlNodePtr) node->properties);
}
curnode = node->next;
xmlUnlinkNode(node);
if (php_libxml_unregister_node(node) == 0) {
node->doc = NULL;
}
php_libxml_node_free(node);
}
}
}
/* }}} */
/* {{{ startup, shutdown and info functions */
static PHP_GINIT_FUNCTION(libxml)
{
#if defined(COMPILE_DL_LIBXML) && defined(ZTS)
ZEND_TSRMLS_CACHE_UPDATE();
#endif
ZVAL_UNDEF(&libxml_globals->stream_context);
libxml_globals->error_buffer.s = NULL;
libxml_globals->error_list = NULL;
ZVAL_UNDEF(&libxml_globals->entity_loader.object);
libxml_globals->entity_loader.fci.size = 0;
libxml_globals->entity_loader_disabled = 0;
}
static void _php_libxml_destroy_fci(zend_fcall_info *fci, zval *object)
{
if (fci->size > 0) {
zval_ptr_dtor(&fci->function_name);
fci->size = 0;
}
if (!Z_ISUNDEF_P(object)) {
zval_ptr_dtor(object);
ZVAL_UNDEF(object);
}
}
/* Channel libxml file io layer through the PHP streams subsystem.
* This allows use of ftps:// and https:// urls */
static void *php_libxml_streams_IO_open_wrapper(const char *filename, const char *mode, const int read_only)
{
php_stream_statbuf ssbuf;
php_stream_context *context = NULL;
php_stream_wrapper *wrapper = NULL;
char *resolved_path;
const char *path_to_open = NULL;
void *ret_val = NULL;
int isescaped=0;
xmlURI *uri;
uri = xmlParseURI(filename);
if (uri && (uri->scheme == NULL ||
(xmlStrncmp(BAD_CAST uri->scheme, BAD_CAST "file", 4) == 0))) {
resolved_path = xmlURIUnescapeString(filename, 0, NULL);
isescaped = 1;
#if LIBXML_VERSION >= 20902 && defined(PHP_WIN32)
/* Libxml 2.9.2 prefixes local paths with file:/ instead of file://,
thus the php stream wrapper will fail on a valid case. For this
reason the prefix is rather better cut off. */
{
size_t pre_len = sizeof("file:/") - 1;
if (strncasecmp(resolved_path, "file:/", pre_len) == 0
&& '/' != resolved_path[pre_len]) {
xmlChar *tmp = xmlStrdup(resolved_path + pre_len);
xmlFree(resolved_path);
resolved_path = tmp;
}
}
#endif
} else {
resolved_path = (char *)filename;
}
if (uri) {
xmlFreeURI(uri);
}
if (resolved_path == NULL) {
return NULL;
}
/* logic copied from _php_stream_stat, but we only want to fail
if the wrapper supports stat, otherwise, figure it out from
the open. This logic is only to support hiding warnings
that the streams layer puts out at times, but for libxml we
may try to open files that don't exist, but it is not a failure
in xml processing (eg. DTD files) */
wrapper = php_stream_locate_url_wrapper(resolved_path, &path_to_open, 0);
if (wrapper && read_only && wrapper->wops->url_stat) {
if (wrapper->wops->url_stat(wrapper, path_to_open, PHP_STREAM_URL_STAT_QUIET, &ssbuf, NULL) == -1) {
if (isescaped) {
xmlFree(resolved_path);
}
return NULL;
}
}
context = php_stream_context_from_zval(Z_ISUNDEF(LIBXML(stream_context))? NULL : &LIBXML(stream_context), 0);
ret_val = php_stream_open_wrapper_ex(path_to_open, (char *)mode, REPORT_ERRORS, NULL, context);
if (isescaped) {
xmlFree(resolved_path);
}
return ret_val;
}
static void *php_libxml_streams_IO_open_read_wrapper(const char *filename)
{
return php_libxml_streams_IO_open_wrapper(filename, "rb", 1);
}
static void *php_libxml_streams_IO_open_write_wrapper(const char *filename)
{
return php_libxml_streams_IO_open_wrapper(filename, "wb", 0);
}
static int php_libxml_streams_IO_read(void *context, char *buffer, int len)
{
return php_stream_read((php_stream*)context, buffer, len);
}
static int php_libxml_streams_IO_write(void *context, const char *buffer, int len)
{
if (CG(unclean_shutdown)) {
return -1;
}
return php_stream_write((php_stream*)context, buffer, len);
}
static int php_libxml_streams_IO_close(void *context)
{
return php_stream_close((php_stream*)context);
}
static xmlParserInputBufferPtr
php_libxml_input_buffer_create_filename(const char *URI, xmlCharEncoding enc)
{
xmlParserInputBufferPtr ret;
void *context = NULL;
if (LIBXML(entity_loader_disabled)) {
return NULL;
}
if (URI == NULL)
return(NULL);
context = php_libxml_streams_IO_open_read_wrapper(URI);
if (context == NULL) {
return(NULL);
}
/* Allocate the Input buffer front-end. */
ret = xmlAllocParserInputBuffer(enc);
if (ret != NULL) {
ret->context = context;
ret->readcallback = php_libxml_streams_IO_read;
ret->closecallback = php_libxml_streams_IO_close;
} else
php_libxml_streams_IO_close(context);
return(ret);
}
static xmlOutputBufferPtr
php_libxml_output_buffer_create_filename(const char *URI,
xmlCharEncodingHandlerPtr encoder,
int compression ATTRIBUTE_UNUSED)
{
xmlOutputBufferPtr ret;
xmlURIPtr puri;
void *context = NULL;
char *unescaped = NULL;
if (URI == NULL)
return(NULL);
puri = xmlParseURI(URI);
if (puri != NULL) {
if (puri->scheme != NULL)
unescaped = xmlURIUnescapeString(URI, 0, NULL);
xmlFreeURI(puri);
}
if (unescaped != NULL) {
context = php_libxml_streams_IO_open_write_wrapper(unescaped);
xmlFree(unescaped);
}
/* try with a non-escaped URI this may be a strange filename */
if (context == NULL) {
context = php_libxml_streams_IO_open_write_wrapper(URI);
}
if (context == NULL) {
return(NULL);
}
/* Allocate the Output buffer front-end. */
ret = xmlAllocOutputBuffer(encoder);
if (ret != NULL) {
ret->context = context;
ret->writecallback = php_libxml_streams_IO_write;
ret->closecallback = php_libxml_streams_IO_close;
}
return(ret);
}
static int _php_libxml_free_error(xmlErrorPtr error)
{
/* This will free the libxml alloc'd memory */
xmlResetError(error);
return 1;
}
static void _php_list_set_error_structure(xmlErrorPtr error, const char *msg)
{
xmlError error_copy;
int ret;
memset(&error_copy, 0, sizeof(xmlError));
if (error) {
ret = xmlCopyError(error, &error_copy);
} else {
error_copy.domain = 0;
error_copy.code = XML_ERR_INTERNAL_ERROR;
error_copy.level = XML_ERR_ERROR;
error_copy.line = 0;
error_copy.node = NULL;
error_copy.int1 = 0;
error_copy.int2 = 0;
error_copy.ctxt = NULL;
error_copy.message = (char*)xmlStrdup((xmlChar*)msg);
error_copy.file = NULL;
error_copy.str1 = NULL;
error_copy.str2 = NULL;
error_copy.str3 = NULL;
ret = 0;
}
if (ret == 0) {
zend_llist_add_element(LIBXML(error_list), &error_copy);
}
}
static void php_libxml_ctx_error_level(int level, void *ctx, const char *msg)
{
xmlParserCtxtPtr parser;
parser = (xmlParserCtxtPtr) ctx;
if (parser != NULL && parser->input != NULL) {
if (parser->input->filename) {
php_error_docref(NULL, level, "%s in %s, line: %d", msg, parser->input->filename, parser->input->line);
} else {
php_error_docref(NULL, level, "%s in Entity, line: %d", msg, parser->input->line);
}
}
}
void php_libxml_issue_error(int level, const char *msg)
{
if (LIBXML(error_list)) {
_php_list_set_error_structure(NULL, msg);
} else {
php_error_docref(NULL, level, "%s", msg);
}
}
static void php_libxml_internal_error_handler(int error_type, void *ctx, const char **msg, va_list ap)
{
char *buf;
int len, len_iter, output = 0;
len = vspprintf(&buf, 0, *msg, ap);
len_iter = len;
/* remove any trailing \n */
while (len_iter && buf[--len_iter] == '\n') {
buf[len_iter] = '\0';
output = 1;
}
smart_str_appendl(&LIBXML(error_buffer), buf, len);
efree(buf);
if (output == 1) {
if (LIBXML(error_list)) {
_php_list_set_error_structure(NULL, ZSTR_VAL(LIBXML(error_buffer).s));
} else {
switch (error_type) {
case PHP_LIBXML_CTX_ERROR:
php_libxml_ctx_error_level(E_WARNING, ctx, ZSTR_VAL(LIBXML(error_buffer).s));
break;
case PHP_LIBXML_CTX_WARNING:
php_libxml_ctx_error_level(E_NOTICE, ctx, ZSTR_VAL(LIBXML(error_buffer).s));
break;
default:
php_error_docref(NULL, E_WARNING, "%s", ZSTR_VAL(LIBXML(error_buffer).s));
}
}
smart_str_free(&LIBXML(error_buffer));
}
}
static xmlParserInputPtr _php_libxml_external_entity_loader(const char *URL,
const char *ID, xmlParserCtxtPtr context)
{
xmlParserInputPtr ret = NULL;
const char *resource = NULL;
zval *ctxzv, retval;
zval params[3];
int status;
zend_fcall_info *fci;
fci = &LIBXML(entity_loader).fci;
if (fci->size == 0) {
/* no custom user-land callback set up; delegate to original loader */
return _php_libxml_default_entity_loader(URL, ID, context);
}
if (ID != NULL) {
ZVAL_STRING(¶ms[0], ID);
} else {
ZVAL_UNDEF(¶ms[0]);
}
if (URL != NULL) {
ZVAL_STRING(¶ms[1], URL);
} else {
ZVAL_UNDEF(¶ms[1]);
}
ctxzv = ¶ms[2];
array_init_size(ctxzv, 4);
#define ADD_NULL_OR_STRING_KEY(memb) \
if (context->memb == NULL) { \
add_assoc_null_ex(ctxzv, #memb, sizeof(#memb) - 1); \
} else { \
add_assoc_string_ex(ctxzv, #memb, sizeof(#memb) - 1, \
(char *)context->memb); \
}
ADD_NULL_OR_STRING_KEY(directory)
ADD_NULL_OR_STRING_KEY(intSubName)
ADD_NULL_OR_STRING_KEY(extSubURI)
ADD_NULL_OR_STRING_KEY(extSubSystem)
#undef ADD_NULL_OR_STRING_KEY
fci->retval = &retval;
fci->params = params;
fci->param_count = sizeof(params)/sizeof(*params);
fci->no_separation = 1;
status = zend_call_function(fci, &LIBXML(entity_loader).fcc);
if (status != SUCCESS || Z_ISUNDEF(retval)) {
php_libxml_ctx_error(context,
"Call to user entity loader callback '%s' has failed",
Z_STRVAL(fci->function_name));
} else {
/*
retval_ptr = *fci->retval_ptr_ptr;
if (retval_ptr == NULL) {
php_libxml_ctx_error(context,
"Call to user entity loader callback '%s' has failed; "
"probably it has thrown an exception",
fci->function_name);
} else */ if (Z_TYPE(retval) == IS_STRING) {
is_string:
resource = Z_STRVAL(retval);
} else if (Z_TYPE(retval) == IS_RESOURCE) {
php_stream *stream;
php_stream_from_zval_no_verify(stream, &retval);
if (stream == NULL) {
php_libxml_ctx_error(context,
"The user entity loader callback '%s' has returned a "
"resource, but it is not a stream",
Z_STRVAL(fci->function_name));
} else {
/* TODO: allow storing the encoding in the stream context? */
xmlCharEncoding enc = XML_CHAR_ENCODING_NONE;
xmlParserInputBufferPtr pib = xmlAllocParserInputBuffer(enc);
if (pib == NULL) {
php_libxml_ctx_error(context, "Could not allocate parser "
"input buffer");
} else {
/* make stream not being closed when the zval is freed */
++GC_REFCOUNT(stream->res);
pib->context = stream;
pib->readcallback = php_libxml_streams_IO_read;
pib->closecallback = php_libxml_streams_IO_close;
ret = xmlNewIOInputStream(context, pib, enc);
if (ret == NULL) {
xmlFreeParserInputBuffer(pib);
}
}
}
} else if (Z_TYPE(retval) != IS_NULL) {
/* retval not string nor resource nor null; convert to string */
convert_to_string(&retval);
goto is_string;
} /* else is null; don't try anything */
}
if (ret == NULL) {
if (resource == NULL) {
if (ID == NULL) {
ID = "NULL";
}
php_libxml_ctx_error(context,
"Failed to load external entity \"%s\"\n", ID);
} else {
/* we got the resource in the form of a string; open it */
ret = xmlNewInputFromFile(context, resource);
}
}
zval_ptr_dtor(¶ms[0]);
zval_ptr_dtor(¶ms[1]);
zval_ptr_dtor(¶ms[2]);
zval_ptr_dtor(&retval);
return ret;
}
static xmlParserInputPtr _php_libxml_pre_ext_ent_loader(const char *URL,
const char *ID, xmlParserCtxtPtr context)
{
/* Check whether we're running in a PHP context, since the entity loader
* we've defined is an application level (true global) setting.
* If we are, we also want to check whether we've finished activating
* the modules (RINIT phase). Using our external entity loader during a
* RINIT should not be problem per se (though during MINIT it is, because
* we don't even have a resource list by then), but then whether one
* extension would be using the custom external entity loader or not
* could depend on extension loading order
* (if _php_libxml_per_request_initialization */
if (xmlGenericError == php_libxml_error_handler && PG(modules_activated)) {
return _php_libxml_external_entity_loader(URL, ID, context);
} else {
return _php_libxml_default_entity_loader(URL, ID, context);
}
}
PHP_LIBXML_API void php_libxml_ctx_error(void *ctx, const char *msg, ...)
{
va_list args;
va_start(args, msg);
php_libxml_internal_error_handler(PHP_LIBXML_CTX_ERROR, ctx, &msg, args);
va_end(args);
}
PHP_LIBXML_API void php_libxml_ctx_warning(void *ctx, const char *msg, ...)
{
va_list args;
va_start(args, msg);
php_libxml_internal_error_handler(PHP_LIBXML_CTX_WARNING, ctx, &msg, args);
va_end(args);
}
PHP_LIBXML_API void php_libxml_structured_error_handler(void *userData, xmlErrorPtr error)
{
_php_list_set_error_structure(error, NULL);
return;
}
PHP_LIBXML_API void php_libxml_error_handler(void *ctx, const char *msg, ...)
{
va_list args;
va_start(args, msg);
php_libxml_internal_error_handler(PHP_LIBXML_ERROR, ctx, &msg, args);
va_end(args);
}
static void php_libxml_exports_dtor(zval *zv)
{
free(Z_PTR_P(zv));
}
PHP_LIBXML_API void php_libxml_initialize(void)
{
if (!_php_libxml_initialized) {
/* we should be the only one's to ever init!! */
xmlInitParser();
_php_libxml_default_entity_loader = xmlGetExternalEntityLoader();
xmlSetExternalEntityLoader(_php_libxml_pre_ext_ent_loader);
zend_hash_init(&php_libxml_exports, 0, NULL, php_libxml_exports_dtor, 1);
_php_libxml_initialized = 1;
}
}
PHP_LIBXML_API void php_libxml_shutdown(void)
{
if (_php_libxml_initialized) {
#if defined(LIBXML_SCHEMAS_ENABLED)
xmlRelaxNGCleanupTypes();
#endif
/* xmlCleanupParser(); */
zend_hash_destroy(&php_libxml_exports);
xmlSetExternalEntityLoader(_php_libxml_default_entity_loader);
_php_libxml_initialized = 0;
}
}
PHP_LIBXML_API void php_libxml_switch_context(zval *context, zval *oldcontext)
{
if (oldcontext) {
ZVAL_COPY_VALUE(oldcontext, &LIBXML(stream_context));
}
if (context) {
ZVAL_COPY_VALUE(&LIBXML(stream_context), context);
}
}
static PHP_MINIT_FUNCTION(libxml)
{
zend_class_entry ce;
php_libxml_initialize();
REGISTER_LONG_CONSTANT("LIBXML_VERSION", LIBXML_VERSION, CONST_CS | CONST_PERSISTENT);
REGISTER_STRING_CONSTANT("LIBXML_DOTTED_VERSION", LIBXML_DOTTED_VERSION, CONST_CS | CONST_PERSISTENT);
REGISTER_STRING_CONSTANT("LIBXML_LOADED_VERSION", (char *)xmlParserVersion, CONST_CS | CONST_PERSISTENT);
/* For use with loading xml */
REGISTER_LONG_CONSTANT("LIBXML_NOENT", XML_PARSE_NOENT, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("LIBXML_DTDLOAD", XML_PARSE_DTDLOAD, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("LIBXML_DTDATTR", XML_PARSE_DTDATTR, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("LIBXML_DTDVALID", XML_PARSE_DTDVALID, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("LIBXML_NOERROR", XML_PARSE_NOERROR, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("LIBXML_NOWARNING", XML_PARSE_NOWARNING, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("LIBXML_NOBLANKS", XML_PARSE_NOBLANKS, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("LIBXML_XINCLUDE", XML_PARSE_XINCLUDE, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("LIBXML_NSCLEAN", XML_PARSE_NSCLEAN, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("LIBXML_NOCDATA", XML_PARSE_NOCDATA, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("LIBXML_NONET", XML_PARSE_NONET, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("LIBXML_PEDANTIC", XML_PARSE_PEDANTIC, CONST_CS | CONST_PERSISTENT);
#if LIBXML_VERSION >= 20621
REGISTER_LONG_CONSTANT("LIBXML_COMPACT", XML_PARSE_COMPACT, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("LIBXML_NOXMLDECL", XML_SAVE_NO_DECL, CONST_CS | CONST_PERSISTENT);
#endif
#if LIBXML_VERSION >= 20703
REGISTER_LONG_CONSTANT("LIBXML_PARSEHUGE", XML_PARSE_HUGE, CONST_CS | CONST_PERSISTENT);
#endif
#if LIBXML_VERSION >= 20900
REGISTER_LONG_CONSTANT("LIBXML_BIGLINES", XML_PARSE_BIG_LINES, CONST_CS | CONST_PERSISTENT);
#endif
REGISTER_LONG_CONSTANT("LIBXML_NOEMPTYTAG", LIBXML_SAVE_NOEMPTYTAG, CONST_CS | CONST_PERSISTENT);
/* Schema validation options */
#if defined(LIBXML_SCHEMAS_ENABLED) && LIBXML_VERSION >= 20614
REGISTER_LONG_CONSTANT("LIBXML_SCHEMA_CREATE", XML_SCHEMA_VAL_VC_I_CREATE, CONST_CS | CONST_PERSISTENT);
#endif
/* Additional constants for use with loading html */
#if LIBXML_VERSION >= 20707
REGISTER_LONG_CONSTANT("LIBXML_HTML_NOIMPLIED", HTML_PARSE_NOIMPLIED, CONST_CS | CONST_PERSISTENT);
#endif
#if LIBXML_VERSION >= 20708
REGISTER_LONG_CONSTANT("LIBXML_HTML_NODEFDTD", HTML_PARSE_NODEFDTD, CONST_CS | CONST_PERSISTENT);
#endif
/* Error levels */
REGISTER_LONG_CONSTANT("LIBXML_ERR_NONE", XML_ERR_NONE, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("LIBXML_ERR_WARNING", XML_ERR_WARNING, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("LIBXML_ERR_ERROR", XML_ERR_ERROR, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("LIBXML_ERR_FATAL", XML_ERR_FATAL, CONST_CS | CONST_PERSISTENT);
INIT_CLASS_ENTRY(ce, "LibXMLError", NULL);
libxmlerror_class_entry = zend_register_internal_class(&ce);
if (sapi_module.name) {
static const char * const supported_sapis[] = {
"cgi-fcgi",
"fpm-fcgi",
"litespeed",
NULL
};
const char * const *sapi_name;
for (sapi_name = supported_sapis; *sapi_name; sapi_name++) {
if (strcmp(sapi_module.name, *sapi_name) == 0) {
_php_libxml_per_request_initialization = 0;
break;
}
}
}
if (!_php_libxml_per_request_initialization) {
/* report errors via handler rather than stderr */
xmlSetGenericErrorFunc(NULL, php_libxml_error_handler);
xmlParserInputBufferCreateFilenameDefault(php_libxml_input_buffer_create_filename);
xmlOutputBufferCreateFilenameDefault(php_libxml_output_buffer_create_filename);
}
return SUCCESS;
}
static PHP_RINIT_FUNCTION(libxml)
{
if (_php_libxml_per_request_initialization) {
/* report errors via handler rather than stderr */
xmlSetGenericErrorFunc(NULL, php_libxml_error_handler);
xmlParserInputBufferCreateFilenameDefault(php_libxml_input_buffer_create_filename);
xmlOutputBufferCreateFilenameDefault(php_libxml_output_buffer_create_filename);
/* Enable the entity loader by default. This ensures that
* other threads/requests that might have disabled the loader
* do not affect the current request.
*/
LIBXML(entity_loader_disabled) = 0;
}
return SUCCESS;
}
static PHP_RSHUTDOWN_FUNCTION(libxml)
{
_php_libxml_destroy_fci(&LIBXML(entity_loader).fci, &LIBXML(entity_loader).object);
return SUCCESS;
}
static PHP_MSHUTDOWN_FUNCTION(libxml)
{
if (!_php_libxml_per_request_initialization) {
xmlSetGenericErrorFunc(NULL, NULL);
xmlParserInputBufferCreateFilenameDefault(NULL);
xmlOutputBufferCreateFilenameDefault(NULL);
}
php_libxml_shutdown();
return SUCCESS;
}
static int php_libxml_post_deactivate(void)
{
/* reset libxml generic error handling */
if (_php_libxml_per_request_initialization) {
xmlSetGenericErrorFunc(NULL, NULL);
xmlParserInputBufferCreateFilenameDefault(NULL);
xmlOutputBufferCreateFilenameDefault(NULL);
}
xmlSetStructuredErrorFunc(NULL, NULL);
/* the steam_context resource will be released by resource list destructor */
ZVAL_UNDEF(&LIBXML(stream_context));
smart_str_free(&LIBXML(error_buffer));
if (LIBXML(error_list)) {
zend_llist_destroy(LIBXML(error_list));
efree(LIBXML(error_list));
LIBXML(error_list) = NULL;
}
xmlResetLastError();
return SUCCESS;
}
static PHP_MINFO_FUNCTION(libxml)
{
php_info_print_table_start();
php_info_print_table_row(2, "libXML support", "active");
php_info_print_table_row(2, "libXML Compiled Version", LIBXML_DOTTED_VERSION);
php_info_print_table_row(2, "libXML Loaded Version", (char *)xmlParserVersion);
php_info_print_table_row(2, "libXML streams", "enabled");
php_info_print_table_end();
}
/* }}} */
/* {{{ proto void libxml_set_streams_context(resource streams_context)
Set the streams context for the next libxml document load or write */
static PHP_FUNCTION(libxml_set_streams_context)
{
zval *arg;
ZEND_PARSE_PARAMETERS_START(1, 1)
Z_PARAM_RESOURCE(arg)
ZEND_PARSE_PARAMETERS_END();
if (!Z_ISUNDEF(LIBXML(stream_context))) {
zval_ptr_dtor(&LIBXML(stream_context));
ZVAL_UNDEF(&LIBXML(stream_context));
}
ZVAL_COPY(&LIBXML(stream_context), arg);
}
/* }}} */
/* {{{ proto bool libxml_use_internal_errors([boolean use_errors])
Disable libxml errors and allow user to fetch error information as needed */
static PHP_FUNCTION(libxml_use_internal_errors)
{
xmlStructuredErrorFunc current_handler;
zend_bool use_errors=0, retval;
ZEND_PARSE_PARAMETERS_START(0, 1)
Z_PARAM_OPTIONAL
Z_PARAM_BOOL(use_errors)
ZEND_PARSE_PARAMETERS_END();
current_handler = xmlStructuredError;
if (current_handler && current_handler == php_libxml_structured_error_handler) {
retval = 1;
} else {
retval = 0;
}
if (ZEND_NUM_ARGS() == 0) {
RETURN_BOOL(retval);
}
if (use_errors == 0) {
xmlSetStructuredErrorFunc(NULL, NULL);
if (LIBXML(error_list)) {
zend_llist_destroy(LIBXML(error_list));
efree(LIBXML(error_list));
LIBXML(error_list) = NULL;
}
} else {
xmlSetStructuredErrorFunc(NULL, php_libxml_structured_error_handler);
if (LIBXML(error_list) == NULL) {
LIBXML(error_list) = (zend_llist *) emalloc(sizeof(zend_llist));