-
Notifications
You must be signed in to change notification settings - Fork 7.8k
/
Copy pathSAPI.c
1157 lines (1002 loc) · 30.8 KB
/
SAPI.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
/*
+----------------------------------------------------------------------+
| Copyright (c) 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: |
| https://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. |
+----------------------------------------------------------------------+
| Original design: Shane Caraveo <[email protected]> |
| Authors: Andi Gutmans <[email protected]> |
| Zeev Suraski <[email protected]> |
+----------------------------------------------------------------------+
*/
#include <ctype.h>
#include <sys/stat.h>
#include "php.h"
#include "SAPI.h"
#include "php_variables.h"
#include "php_ini.h"
#include "ext/standard/php_string.h"
#include "ext/standard/pageinfo.h"
#include "ext/pcre/php_pcre.h"
#ifdef ZTS
#include "TSRM.h"
#endif
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#elif defined(PHP_WIN32)
#include "win32/time.h"
#endif
#include "rfc1867.h"
#include "php_content_types.h"
#ifdef ZTS
SAPI_API int sapi_globals_id;
SAPI_API size_t sapi_globals_offset;
#else
sapi_globals_struct sapi_globals;
#endif
static void _type_dtor(zval *zv)
{
free(Z_PTR_P(zv));
}
static void sapi_globals_ctor(sapi_globals_struct *sapi_globals)
{
memset(sapi_globals, 0, sizeof(*sapi_globals));
zend_hash_init(&sapi_globals->known_post_content_types, 8, NULL, _type_dtor, 1);
php_setup_sapi_content_types();
}
static void sapi_globals_dtor(sapi_globals_struct *sapi_globals)
{
zend_hash_destroy(&sapi_globals->known_post_content_types);
}
/* True globals (no need for thread safety) */
SAPI_API sapi_module_struct sapi_module;
SAPI_API void sapi_startup(sapi_module_struct *sf)
{
sf->ini_entries = NULL;
sapi_module = *sf;
#ifdef ZTS
ts_allocate_fast_id(&sapi_globals_id, &sapi_globals_offset, sizeof(sapi_globals_struct), (ts_allocate_ctor) sapi_globals_ctor, (ts_allocate_dtor) sapi_globals_dtor);
# ifdef PHP_WIN32
_configthreadlocale(_ENABLE_PER_THREAD_LOCALE);
# endif
#else
sapi_globals_ctor(&sapi_globals);
#endif
#ifdef PHP_WIN32
tsrm_win32_startup();
#endif
reentrancy_startup();
}
SAPI_API void sapi_shutdown(void)
{
#ifdef ZTS
ts_free_id(sapi_globals_id);
#else
sapi_globals_dtor(&sapi_globals);
#endif
reentrancy_shutdown();
#ifdef PHP_WIN32
tsrm_win32_shutdown();
#endif
}
SAPI_API void sapi_free_header(sapi_header_struct *sapi_header)
{
efree(sapi_header->header);
}
/* {{{ call a header function */
PHP_FUNCTION(header_register_callback)
{
zend_fcall_info fci;
zend_fcall_info_cache fcc;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "f", &fci, &fcc) == FAILURE) {
RETURN_THROWS();
}
if (Z_TYPE(SG(callback_func)) != IS_UNDEF) {
zval_ptr_dtor(&SG(callback_func));
SG(fci_cache) = empty_fcall_info_cache;
}
/* Don't store callback if headers have already been sent:
* It won't get used and we won't have a chance to release it. */
if (!SG(headers_sent)) {
ZVAL_COPY(&SG(callback_func), &fci.function_name);
}
RETURN_TRUE;
}
/* }}} */
static void sapi_run_header_callback(zval *callback)
{
int error;
zend_fcall_info fci;
char *callback_error = NULL;
zval retval;
if (zend_fcall_info_init(callback, 0, &fci, &SG(fci_cache), NULL, &callback_error) == SUCCESS) {
fci.retval = &retval;
error = zend_call_function(&fci, &SG(fci_cache));
if (error == FAILURE) {
goto callback_failed;
} else {
zval_ptr_dtor(&retval);
}
} else {
callback_failed:
php_error_docref(NULL, E_WARNING, "Could not call the sapi_header_callback");
}
if (callback_error) {
efree(callback_error);
}
}
SAPI_API void sapi_handle_post(void *arg)
{
if (SG(request_info).post_entry && SG(request_info).content_type_dup) {
SG(request_info).post_entry->post_handler(SG(request_info).content_type_dup, arg);
efree(SG(request_info).content_type_dup);
SG(request_info).content_type_dup = NULL;
}
}
static void sapi_read_post_data(void)
{
sapi_post_entry *post_entry;
uint32_t content_type_length = (uint32_t)strlen(SG(request_info).content_type);
char *content_type = estrndup(SG(request_info).content_type, content_type_length);
char *p;
char oldchar=0;
void (*post_reader_func)(void) = NULL;
/* dedicated implementation for increased performance:
* - Make the content type lowercase
* - Trim descriptive data, stay with the content-type only
*/
for (p=content_type; p<content_type+content_type_length; p++) {
switch (*p) {
case ';':
case ',':
case ' ':
content_type_length = p-content_type;
oldchar = *p;
*p = 0;
break;
default:
*p = tolower(*p);
break;
}
}
/* now try to find an appropriate POST content handler */
if ((post_entry = zend_hash_str_find_ptr(&SG(known_post_content_types), content_type,
content_type_length)) != NULL) {
/* found one, register it for use */
SG(request_info).post_entry = post_entry;
post_reader_func = post_entry->post_reader;
} else {
/* fallback */
SG(request_info).post_entry = NULL;
if (!sapi_module.default_post_reader) {
/* no default reader? */
SG(request_info).content_type_dup = NULL;
sapi_module.sapi_error(E_WARNING, "Unsupported content type: '%s'", content_type);
return;
}
}
if (oldchar) {
*(p-1) = oldchar;
}
SG(request_info).content_type_dup = content_type;
if(post_reader_func) {
post_reader_func();
}
if(sapi_module.default_post_reader) {
sapi_module.default_post_reader();
}
}
SAPI_API size_t sapi_read_post_block(char *buffer, size_t buflen)
{
size_t read_bytes;
if (!sapi_module.read_post) {
return 0;
}
read_bytes = sapi_module.read_post(buffer, buflen);
if (read_bytes > 0) {
/* gogo */
SG(read_post_bytes) += read_bytes;
}
if (read_bytes < buflen) {
/* done */
SG(post_read) = 1;
}
return read_bytes;
}
SAPI_API SAPI_POST_READER_FUNC(sapi_read_standard_form_data)
{
if ((SG(post_max_size) > 0) && (SG(request_info).content_length > SG(post_max_size))) {
php_error_docref(NULL, E_WARNING, "POST Content-Length of " ZEND_LONG_FMT " bytes exceeds the limit of " ZEND_LONG_FMT " bytes",
SG(request_info).content_length, SG(post_max_size));
return;
}
SG(request_info).request_body = php_stream_temp_create_ex(TEMP_STREAM_DEFAULT, SAPI_POST_BLOCK_SIZE, PG(upload_tmp_dir));
if (sapi_module.read_post) {
size_t read_bytes;
for (;;) {
char buffer[SAPI_POST_BLOCK_SIZE];
read_bytes = sapi_read_post_block(buffer, SAPI_POST_BLOCK_SIZE);
if (read_bytes > 0) {
if (php_stream_write(SG(request_info).request_body, buffer, read_bytes) != read_bytes) {
/* if parts of the stream can't be written, purge it completely */
php_stream_truncate_set_size(SG(request_info).request_body, 0);
php_error_docref(NULL, E_WARNING, "POST data can't be buffered; all data discarded");
break;
}
}
if ((SG(post_max_size) > 0) && (SG(read_post_bytes) > SG(post_max_size))) {
php_error_docref(NULL, E_WARNING, "Actual POST length does not match Content-Length, and exceeds " ZEND_LONG_FMT " bytes", SG(post_max_size));
break;
}
if (read_bytes < SAPI_POST_BLOCK_SIZE) {
/* done */
break;
}
}
php_stream_rewind(SG(request_info).request_body);
}
}
static inline char *get_default_content_type(uint32_t prefix_len, uint32_t *len)
{
char *mimetype, *charset, *content_type;
uint32_t mimetype_len, charset_len;
if (SG(default_mimetype)) {
mimetype = SG(default_mimetype);
mimetype_len = (uint32_t)strlen(SG(default_mimetype));
} else {
mimetype = SAPI_DEFAULT_MIMETYPE;
mimetype_len = sizeof(SAPI_DEFAULT_MIMETYPE) - 1;
}
if (SG(default_charset)) {
charset = SG(default_charset);
charset_len = (uint32_t)strlen(SG(default_charset));
} else {
charset = SAPI_DEFAULT_CHARSET;
charset_len = sizeof(SAPI_DEFAULT_CHARSET) - 1;
}
if (*charset && strncasecmp(mimetype, "text/", 5) == 0) {
char *p;
*len = prefix_len + mimetype_len + sizeof("; charset=") - 1 + charset_len;
content_type = (char*)emalloc(*len + 1);
p = content_type + prefix_len;
memcpy(p, mimetype, mimetype_len);
p += mimetype_len;
memcpy(p, "; charset=", sizeof("; charset=") - 1);
p += sizeof("; charset=") - 1;
memcpy(p, charset, charset_len + 1);
} else {
*len = prefix_len + mimetype_len;
content_type = (char*)emalloc(*len + 1);
memcpy(content_type + prefix_len, mimetype, mimetype_len + 1);
}
return content_type;
}
SAPI_API char *sapi_get_default_content_type(void)
{
uint32_t len;
return get_default_content_type(0, &len);
}
SAPI_API void sapi_get_default_content_type_header(sapi_header_struct *default_header)
{
uint32_t len;
default_header->header = get_default_content_type(sizeof("Content-type: ")-1, &len);
default_header->header_len = len;
memcpy(default_header->header, "Content-type: ", sizeof("Content-type: ") - 1);
}
/*
* Add charset on content-type header if the MIME type starts with
* "text/", the default_charset directive is not empty and
* there is not already a charset option in there.
*
* If "mimetype" is non-NULL, it should point to a pointer allocated
* with emalloc(). If a charset is added, the string will be
* re-allocated and the new length is returned. If mimetype is
* unchanged, 0 is returned.
*
*/
SAPI_API size_t sapi_apply_default_charset(char **mimetype, size_t len)
{
char *charset, *newtype;
size_t newlen;
charset = SG(default_charset) ? SG(default_charset) : SAPI_DEFAULT_CHARSET;
if (*mimetype != NULL) {
if (*charset && strncmp(*mimetype, "text/", 5) == 0 && strstr(*mimetype, "charset=") == NULL) {
newlen = len + (sizeof(";charset=")-1) + strlen(charset);
newtype = emalloc(newlen + 1);
PHP_STRLCPY(newtype, *mimetype, newlen + 1, len);
strlcat(newtype, ";charset=", newlen + 1);
strlcat(newtype, charset, newlen + 1);
efree(*mimetype);
*mimetype = newtype;
return newlen;
}
}
return 0;
}
SAPI_API void sapi_activate_headers_only(void)
{
if (SG(request_info).headers_read == 1)
return;
SG(request_info).headers_read = 1;
zend_llist_init(&SG(sapi_headers).headers, sizeof(sapi_header_struct),
(void (*)(void *)) sapi_free_header, 0);
SG(sapi_headers).send_default_content_type = 1;
/* SG(sapi_headers).http_response_code = 200; */
SG(sapi_headers).http_status_line = NULL;
SG(sapi_headers).mimetype = NULL;
SG(read_post_bytes) = 0;
SG(request_info).request_body = NULL;
SG(request_info).current_user = NULL;
SG(request_info).current_user_length = 0;
SG(request_info).no_headers = 0;
SG(request_info).post_entry = NULL;
SG(global_request_time) = 0;
/*
* It's possible to override this general case in the activate() callback,
* if necessary.
*/
if (SG(request_info).request_method && !strcmp(SG(request_info).request_method, "HEAD")) {
SG(request_info).headers_only = 1;
} else {
SG(request_info).headers_only = 0;
}
if (SG(server_context)) {
SG(request_info).cookie_data = sapi_module.read_cookies();
if (sapi_module.activate) {
sapi_module.activate();
}
}
if (sapi_module.input_filter_init ) {
sapi_module.input_filter_init();
}
}
/*
* Called from php_request_startup() for every request.
*/
SAPI_API void sapi_activate(void)
{
zend_llist_init(&SG(sapi_headers).headers, sizeof(sapi_header_struct), (void (*)(void *)) sapi_free_header, 0);
SG(sapi_headers).send_default_content_type = 1;
/*
SG(sapi_headers).http_response_code = 200;
*/
SG(sapi_headers).http_status_line = NULL;
SG(sapi_headers).mimetype = NULL;
SG(headers_sent) = 0;
ZVAL_UNDEF(&SG(callback_func));
SG(read_post_bytes) = 0;
SG(request_info).request_body = NULL;
SG(request_info).current_user = NULL;
SG(request_info).current_user_length = 0;
SG(request_info).no_headers = 0;
SG(request_info).post_entry = NULL;
SG(request_info).proto_num = 1000; /* Default to HTTP 1.0 */
SG(global_request_time) = 0;
SG(post_read) = 0;
/* It's possible to override this general case in the activate() callback, if necessary. */
if (SG(request_info).request_method && !strcmp(SG(request_info).request_method, "HEAD")) {
SG(request_info).headers_only = 1;
} else {
SG(request_info).headers_only = 0;
}
SG(rfc1867_uploaded_files) = NULL;
/* Handle request method */
if (SG(server_context)) {
if (PG(enable_post_data_reading)
&& SG(request_info).content_type
&& SG(request_info).request_method
&& !strcmp(SG(request_info).request_method, "POST")) {
/* HTTP POST may contain form data to be processed into variables
* depending on given content type */
sapi_read_post_data();
} else {
SG(request_info).content_type_dup = NULL;
}
/* Cookies */
SG(request_info).cookie_data = sapi_module.read_cookies();
}
if (sapi_module.activate) {
sapi_module.activate();
}
if (sapi_module.input_filter_init) {
sapi_module.input_filter_init();
}
}
static void sapi_send_headers_free(void)
{
if (SG(sapi_headers).http_status_line) {
efree(SG(sapi_headers).http_status_line);
SG(sapi_headers).http_status_line = NULL;
}
}
SAPI_API void sapi_deactivate_module(void)
{
zend_llist_destroy(&SG(sapi_headers).headers);
if (SG(request_info).request_body) {
SG(request_info).request_body = NULL;
} else if (SG(server_context)) {
if (!SG(post_read)) {
/* make sure we've consumed all request input data */
char dummy[SAPI_POST_BLOCK_SIZE];
size_t read_bytes;
do {
read_bytes = sapi_read_post_block(dummy, SAPI_POST_BLOCK_SIZE);
} while (SAPI_POST_BLOCK_SIZE == read_bytes);
}
}
if (SG(request_info).auth_user) {
efree(SG(request_info).auth_user);
SG(request_info).auth_user = NULL;
}
if (SG(request_info).auth_password) {
efree(SG(request_info).auth_password);
SG(request_info).auth_password = NULL;
}
if (SG(request_info).auth_digest) {
efree(SG(request_info).auth_digest);
SG(request_info).auth_digest = NULL;
}
if (SG(request_info).content_type_dup) {
efree(SG(request_info).content_type_dup);
}
if (SG(request_info).current_user) {
efree(SG(request_info).current_user);
}
if (sapi_module.deactivate) {
sapi_module.deactivate();
}
}
SAPI_API void sapi_deactivate_destroy(void)
{
if (SG(rfc1867_uploaded_files)) {
destroy_uploaded_files_hash();
}
if (SG(sapi_headers).mimetype) {
efree(SG(sapi_headers).mimetype);
SG(sapi_headers).mimetype = NULL;
}
sapi_send_headers_free();
SG(sapi_started) = 0;
SG(headers_sent) = 0;
SG(request_info).headers_read = 0;
SG(global_request_time) = 0;
}
SAPI_API void sapi_deactivate(void)
{
sapi_deactivate_module();
sapi_deactivate_destroy();
}
SAPI_API void sapi_initialize_empty_request(void)
{
SG(server_context) = NULL;
SG(request_info).request_method = NULL;
SG(request_info).auth_digest = SG(request_info).auth_user = SG(request_info).auth_password = NULL;
SG(request_info).content_type_dup = NULL;
}
static int sapi_extract_response_code(const char *header_line)
{
int code = 200;
const char *ptr;
for (ptr = header_line; *ptr; ptr++) {
if (*ptr == ' ' && *(ptr + 1) != ' ') {
code = atoi(ptr + 1);
break;
}
}
return code;
}
static void sapi_update_response_code(int ncode)
{
/* if the status code did not change, we do not want
to change the status line, and no need to change the code */
if (SG(sapi_headers).http_response_code == ncode) {
return;
}
if (SG(sapi_headers).http_status_line) {
efree(SG(sapi_headers).http_status_line);
SG(sapi_headers).http_status_line = NULL;
}
SG(sapi_headers).http_response_code = ncode;
}
/*
* since zend_llist_del_element only removes one matched item once,
* we should remove them manually
*/
static void sapi_remove_header(zend_llist *l, char *name, size_t len) {
sapi_header_struct *header;
zend_llist_element *next;
zend_llist_element *current=l->head;
while (current) {
header = (sapi_header_struct *)(current->data);
next = current->next;
if (header->header_len > len && header->header[len] == ':'
&& !strncasecmp(header->header, name, len)) {
if (current->prev) {
current->prev->next = next;
} else {
l->head = next;
}
if (next) {
next->prev = current->prev;
} else {
l->tail = current->prev;
}
sapi_free_header(header);
efree(current);
--l->count;
}
current = next;
}
}
SAPI_API int sapi_add_header_ex(const char *header_line, size_t header_line_len, bool duplicate, bool replace)
{
sapi_header_line ctr = {0};
int r;
ctr.line = header_line;
ctr.line_len = header_line_len;
r = sapi_header_op(replace ? SAPI_HEADER_REPLACE : SAPI_HEADER_ADD,
&ctr);
if (!duplicate)
efree((void *) header_line);
return r;
}
static void sapi_header_add_op(sapi_header_op_enum op, sapi_header_struct *sapi_header)
{
if (!sapi_module.header_handler ||
(SAPI_HEADER_ADD & sapi_module.header_handler(sapi_header, op, &SG(sapi_headers)))) {
if (op == SAPI_HEADER_REPLACE) {
char *colon_offset = strchr(sapi_header->header, ':');
if (colon_offset) {
char sav = *colon_offset;
*colon_offset = 0;
sapi_remove_header(&SG(sapi_headers).headers, sapi_header->header, strlen(sapi_header->header));
*colon_offset = sav;
}
}
zend_llist_add_element(&SG(sapi_headers).headers, (void *) sapi_header);
} else {
sapi_free_header(sapi_header);
}
}
SAPI_API int sapi_header_op(sapi_header_op_enum op, void *arg)
{
sapi_header_struct sapi_header;
char *colon_offset;
char *header_line;
size_t header_line_len;
int http_response_code;
if (SG(headers_sent) && !SG(request_info).no_headers) {
const char *output_start_filename = php_output_get_start_filename();
int output_start_lineno = php_output_get_start_lineno();
if (output_start_filename) {
sapi_module.sapi_error(E_WARNING, "Cannot modify header information - headers already sent by (output started at %s:%d)",
output_start_filename, output_start_lineno);
} else {
sapi_module.sapi_error(E_WARNING, "Cannot modify header information - headers already sent");
}
return FAILURE;
}
switch (op) {
case SAPI_HEADER_SET_STATUS:
sapi_update_response_code((int)(zend_intptr_t) arg);
return SUCCESS;
case SAPI_HEADER_ADD:
case SAPI_HEADER_REPLACE:
case SAPI_HEADER_DELETE: {
sapi_header_line *p = arg;
if (!p->line || !p->line_len) {
return FAILURE;
}
header_line = estrndup(p->line, p->line_len);
header_line_len = p->line_len;
http_response_code = p->response_code;
break;
}
case SAPI_HEADER_DELETE_ALL:
if (sapi_module.header_handler) {
sapi_module.header_handler(&sapi_header, op, &SG(sapi_headers));
}
zend_llist_clean(&SG(sapi_headers).headers);
return SUCCESS;
default:
return FAILURE;
}
/* cut off trailing spaces, linefeeds and carriage-returns */
if (header_line_len && isspace(header_line[header_line_len-1])) {
do {
header_line_len--;
} while(header_line_len && isspace(header_line[header_line_len-1]));
header_line[header_line_len]='\0';
}
if (op == SAPI_HEADER_DELETE) {
if (strchr(header_line, ':')) {
efree(header_line);
sapi_module.sapi_error(E_WARNING, "Header to delete may not contain colon.");
return FAILURE;
}
if (sapi_module.header_handler) {
sapi_header.header = header_line;
sapi_header.header_len = header_line_len;
sapi_module.header_handler(&sapi_header, op, &SG(sapi_headers));
}
sapi_remove_header(&SG(sapi_headers).headers, header_line, header_line_len);
efree(header_line);
return SUCCESS;
} else {
/* new line/NUL character safety check */
uint32_t i;
for (i = 0; i < header_line_len; i++) {
/* RFC 7230 ch. 3.2.4 deprecates folding support */
if (header_line[i] == '\n' || header_line[i] == '\r') {
efree(header_line);
sapi_module.sapi_error(E_WARNING, "Header may not contain "
"more than a single header, new line detected");
return FAILURE;
}
if (header_line[i] == '\0') {
efree(header_line);
sapi_module.sapi_error(E_WARNING, "Header may not contain NUL bytes");
return FAILURE;
}
}
}
sapi_header.header = header_line;
sapi_header.header_len = header_line_len;
/* Check the header for a few cases that we have special support for in SAPI */
if (header_line_len>=5
&& !strncasecmp(header_line, "HTTP/", 5)) {
/* filter out the response code */
sapi_update_response_code(sapi_extract_response_code(header_line));
/* sapi_update_response_code doesn't free the status line if the code didn't change */
if (SG(sapi_headers).http_status_line) {
efree(SG(sapi_headers).http_status_line);
}
SG(sapi_headers).http_status_line = header_line;
return SUCCESS;
} else {
colon_offset = strchr(header_line, ':');
if (colon_offset) {
*colon_offset = 0;
if (!strcasecmp(header_line, "Content-Type")) {
char *ptr = colon_offset+1, *mimetype = NULL, *newheader;
size_t len = header_line_len - (ptr - header_line), newlen;
while (*ptr == ' ') {
ptr++;
len--;
}
mimetype = estrdup(ptr);
newlen = sapi_apply_default_charset(&mimetype, len);
if (!SG(sapi_headers).mimetype){
SG(sapi_headers).mimetype = estrdup(mimetype);
}
if (newlen != 0) {
newlen += sizeof("Content-type: ");
newheader = emalloc(newlen);
PHP_STRLCPY(newheader, "Content-type: ", newlen, sizeof("Content-type: ")-1);
strlcat(newheader, mimetype, newlen);
sapi_header.header = newheader;
sapi_header.header_len = (uint32_t)(newlen - 1);
efree(header_line);
}
efree(mimetype);
SG(sapi_headers).send_default_content_type = 0;
} else if (!strcasecmp(header_line, "Content-Length")) {
/* Script is setting Content-length. The script cannot reasonably
* know the size of the message body after compression, so it's best
* to disable compression altogether. This contributes to making scripts
* portable between setups that have and don't have zlib compression
* enabled globally. See req #44164 */
zend_string *key = zend_string_init("zlib.output_compression", sizeof("zlib.output_compression")-1, 0);
zend_alter_ini_entry_chars(key,
"0", sizeof("0") - 1, PHP_INI_USER, PHP_INI_STAGE_RUNTIME);
zend_string_release_ex(key, 0);
} else if (!strcasecmp(header_line, "Location")) {
if ((SG(sapi_headers).http_response_code < 300 ||
SG(sapi_headers).http_response_code > 399) &&
SG(sapi_headers).http_response_code != 201) {
/* Return a Found Redirect if one is not already specified */
if (http_response_code) { /* user specified redirect code */
sapi_update_response_code(http_response_code);
} else if (SG(request_info).proto_num > 1000 &&
SG(request_info).request_method &&
strcmp(SG(request_info).request_method, "HEAD") &&
strcmp(SG(request_info).request_method, "GET")) {
sapi_update_response_code(303);
} else {
sapi_update_response_code(302);
}
}
} else if (!strcasecmp(header_line, "WWW-Authenticate")) { /* HTTP Authentication */
sapi_update_response_code(401); /* authentication-required */
}
if (sapi_header.header==header_line) {
*colon_offset = ':';
}
}
}
if (http_response_code) {
sapi_update_response_code(http_response_code);
}
sapi_header_add_op(op, &sapi_header);
return SUCCESS;
}
SAPI_API int sapi_send_headers(void)
{
int retval;
int ret = FAILURE;
if (SG(headers_sent) || SG(request_info).no_headers) {
return SUCCESS;
}
/* Success-oriented. We set headers_sent to 1 here to avoid an infinite loop
* in case of an error situation.
*/
if (SG(sapi_headers).send_default_content_type && sapi_module.send_headers) {
uint32_t len = 0;
char *default_mimetype = get_default_content_type(0, &len);
if (default_mimetype && len) {
sapi_header_struct default_header;
SG(sapi_headers).mimetype = default_mimetype;
default_header.header_len = sizeof("Content-type: ") - 1 + len;
default_header.header = emalloc(default_header.header_len + 1);
memcpy(default_header.header, "Content-type: ", sizeof("Content-type: ") - 1);
memcpy(default_header.header + sizeof("Content-type: ") - 1, SG(sapi_headers).mimetype, len + 1);
sapi_header_add_op(SAPI_HEADER_ADD, &default_header);
} else {
efree(default_mimetype);
}
SG(sapi_headers).send_default_content_type = 0;
}
if (Z_TYPE(SG(callback_func)) != IS_UNDEF) {
zval cb;
ZVAL_COPY_VALUE(&cb, &SG(callback_func));
ZVAL_UNDEF(&SG(callback_func));
sapi_run_header_callback(&cb);
zval_ptr_dtor(&cb);
}
SG(headers_sent) = 1;
if (sapi_module.send_headers) {
retval = sapi_module.send_headers(&SG(sapi_headers));
} else {
retval = SAPI_HEADER_DO_SEND;
}
switch (retval) {
case SAPI_HEADER_SENT_SUCCESSFULLY:
ret = SUCCESS;
break;
case SAPI_HEADER_DO_SEND: {
sapi_header_struct http_status_line;
char buf[255];
if (SG(sapi_headers).http_status_line) {
http_status_line.header = SG(sapi_headers).http_status_line;
http_status_line.header_len = (uint32_t)strlen(SG(sapi_headers).http_status_line);
} else {
http_status_line.header = buf;
http_status_line.header_len = slprintf(buf, sizeof(buf), "HTTP/1.0 %d X", SG(sapi_headers).http_response_code);
}
sapi_module.send_header(&http_status_line, SG(server_context));
}
zend_llist_apply_with_argument(&SG(sapi_headers).headers, (llist_apply_with_arg_func_t) sapi_module.send_header, SG(server_context));
if(SG(sapi_headers).send_default_content_type) {
sapi_header_struct default_header;
sapi_get_default_content_type_header(&default_header);
sapi_module.send_header(&default_header, SG(server_context));
sapi_free_header(&default_header);
}
sapi_module.send_header(NULL, SG(server_context));
ret = SUCCESS;
break;
case SAPI_HEADER_SEND_FAILED:
SG(headers_sent) = 0;
ret = FAILURE;
break;
}
sapi_send_headers_free();
return ret;
}
SAPI_API int sapi_register_post_entries(const sapi_post_entry *post_entries)
{
const sapi_post_entry *p=post_entries;
while (p->content_type) {
if (sapi_register_post_entry(p) == FAILURE) {
return FAILURE;
}
p++;
}
return SUCCESS;
}
SAPI_API int sapi_register_post_entry(const sapi_post_entry *post_entry)
{
int ret;
zend_string *key;
if (SG(sapi_started) && EG(current_execute_data)) {
return FAILURE;
}
key = zend_string_init(post_entry->content_type, post_entry->content_type_len, 1);
GC_MAKE_PERSISTENT_LOCAL(key);
ret = zend_hash_add_mem(&SG(known_post_content_types), key,
(void *) post_entry, sizeof(sapi_post_entry)) ? SUCCESS : FAILURE;
zend_string_release_ex(key, 1);
return ret;
}
SAPI_API void sapi_unregister_post_entry(const sapi_post_entry *post_entry)
{
if (SG(sapi_started) && EG(current_execute_data)) {
return;
}
zend_hash_str_del(&SG(known_post_content_types), post_entry->content_type,
post_entry->content_type_len);
}
SAPI_API int sapi_register_default_post_reader(void (*default_post_reader)(void))
{
if (SG(sapi_started) && EG(current_execute_data)) {
return FAILURE;
}
sapi_module.default_post_reader = default_post_reader;
return SUCCESS;
}
SAPI_API int sapi_register_treat_data(void (*treat_data)(int arg, char *str, zval *destArray))
{
if (SG(sapi_started) && EG(current_execute_data)) {
return FAILURE;
}
sapi_module.treat_data = treat_data;
return SUCCESS;
}
SAPI_API int sapi_register_input_filter(unsigned int (*input_filter)(int arg, const char *var, char **val, size_t val_len, size_t *new_val_len), unsigned int (*input_filter_init)(void))
{
if (SG(sapi_started) && EG(current_execute_data)) {
return FAILURE;
}
sapi_module.input_filter = input_filter;
sapi_module.input_filter_init = input_filter_init;
return SUCCESS;
}
SAPI_API int sapi_flush(void)
{