forked from php/php-src
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathzend_object_handlers.c
1618 lines (1434 loc) · 52 KB
/
zend_object_handlers.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
/*
+----------------------------------------------------------------------+
| Zend Engine |
+----------------------------------------------------------------------+
| Copyright (c) 1998-2012 Zend Technologies Ltd. (http://www.zend.com) |
+----------------------------------------------------------------------+
| This source file is subject to version 2.00 of the Zend 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.zend.com/license/2_00.txt. |
| If you did not receive a copy of the Zend 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: Andi Gutmans <[email protected]> |
| Zeev Suraski <[email protected]> |
+----------------------------------------------------------------------+
*/
/* $Id$ */
#include "zend.h"
#include "zend_globals.h"
#include "zend_variables.h"
#include "zend_API.h"
#include "zend_objects.h"
#include "zend_objects_API.h"
#include "zend_object_handlers.h"
#include "zend_interfaces.h"
#include "zend_closures.h"
#include "zend_compile.h"
#define DEBUG_OBJECT_HANDLERS 0
#define Z_OBJ_P(zval_p) \
((zend_object*)(EG(objects_store).object_buckets[Z_OBJ_HANDLE_P(zval_p)].bucket.obj.object))
/*
__X accessors explanation:
if we have __get and property that is not part of the properties array is
requested, we call __get handler. If it fails, we return uninitialized.
if we have __set and property that is not part of the properties array is
set, we call __set handler. If it fails, we do not change the array.
for both handlers above, when we are inside __get/__set, no further calls for
__get/__set for this property of this object will be made, to prevent endless
recursion and enable accessors to change properties array.
if we have __call and method which is not part of the class function table is
called, we cal __call handler.
*/
ZEND_API void rebuild_object_properties(zend_object *zobj) /* {{{ */
{
if (!zobj->properties) {
HashPosition pos;
zend_property_info *prop_info;
zend_class_entry *ce = zobj->ce;
ALLOC_HASHTABLE(zobj->properties);
zend_hash_init(zobj->properties, 0, NULL, ZVAL_PTR_DTOR, 0);
if (ce->default_properties_count) {
for (zend_hash_internal_pointer_reset_ex(&ce->properties_info, &pos);
zend_hash_get_current_data_ex(&ce->properties_info, (void**)&prop_info, &pos) == SUCCESS;
zend_hash_move_forward_ex(&ce->properties_info, &pos)) {
if (/*prop_info->ce == ce &&*/
(prop_info->flags & ZEND_ACC_STATIC) == 0 &&
prop_info->offset >= 0 &&
zobj->properties_table[prop_info->offset]) {
zend_hash_quick_add(zobj->properties, prop_info->name, prop_info->name_length+1, prop_info->h, (void**)&zobj->properties_table[prop_info->offset], sizeof(zval*), (void**)&zobj->properties_table[prop_info->offset]);
}
}
while (ce->parent && ce->parent->default_properties_count) {
ce = ce->parent;
for (zend_hash_internal_pointer_reset_ex(&ce->properties_info, &pos);
zend_hash_get_current_data_ex(&ce->properties_info, (void**)&prop_info, &pos) == SUCCESS;
zend_hash_move_forward_ex(&ce->properties_info, &pos)) {
if (prop_info->ce == ce &&
(prop_info->flags & ZEND_ACC_STATIC) == 0 &&
(prop_info->flags & ZEND_ACC_PRIVATE) != 0 &&
prop_info->offset >= 0 &&
zobj->properties_table[prop_info->offset]) {
zend_hash_quick_add(zobj->properties, prop_info->name, prop_info->name_length+1, prop_info->h, (void**)&zobj->properties_table[prop_info->offset], sizeof(zval*), (void**)&zobj->properties_table[prop_info->offset]);
}
}
}
}
}
}
/* }}} */
ZEND_API HashTable *zend_std_get_properties(zval *object TSRMLS_DC) /* {{{ */
{
zend_object *zobj;
zobj = Z_OBJ_P(object);
if (!zobj->properties) {
rebuild_object_properties(zobj);
}
return zobj->properties;
}
/* }}} */
ZEND_API HashTable *zend_std_get_gc(zval *object, zval ***table, int *n TSRMLS_DC) /* {{{ */
{
if (Z_OBJ_HANDLER_P(object, get_properties) != zend_std_get_properties) {
*table = NULL;
*n = 0;
return Z_OBJ_HANDLER_P(object, get_properties)(object TSRMLS_CC);
} else {
zend_object *zobj = Z_OBJ_P(object);
if (zobj->properties) {
*table = NULL;
*n = 0;
return zobj->properties;
} else {
*table = zobj->properties_table;
*n = zobj->ce->default_properties_count;
return NULL;
}
}
}
/* }}} */
ZEND_API HashTable *zend_std_get_debug_info(zval *object, int *is_temp TSRMLS_DC) /* {{{ */
{
*is_temp = 0;
return zend_std_get_properties(object TSRMLS_CC);
}
/* }}} */
static zval *zend_std_call_getter(zval *object, zval *member TSRMLS_DC) /* {{{ */
{
zval *retval = NULL;
zend_class_entry *ce = Z_OBJCE_P(object);
/* __get handler is called with one argument:
property name
it should return whether the call was successfull or not
*/
SEPARATE_ARG_IF_REF(member);
zend_call_method_with_1_params(&object, ce, &ce->__get, ZEND_GET_FUNC_NAME, &retval, member);
zval_ptr_dtor(&member);
if (retval) {
Z_DELREF_P(retval);
}
return retval;
}
/* }}} */
static int zend_std_call_setter(zval *object, zval *member, zval *value TSRMLS_DC) /* {{{ */
{
zval *retval = NULL;
int result;
zend_class_entry *ce = Z_OBJCE_P(object);
SEPARATE_ARG_IF_REF(member);
Z_ADDREF_P(value);
/* __set handler is called with two arguments:
property name
value to be set
it should return whether the call was successfull or not
*/
zend_call_method_with_2_params(&object, ce, &ce->__set, ZEND_SET_FUNC_NAME, &retval, member, value);
zval_ptr_dtor(&member);
zval_ptr_dtor(&value);
if (retval) {
result = i_zend_is_true(retval) ? SUCCESS : FAILURE;
zval_ptr_dtor(&retval);
return result;
} else {
return FAILURE;
}
}
/* }}} */
static void zend_std_call_unsetter(zval *object, zval *member TSRMLS_DC) /* {{{ */
{
zend_class_entry *ce = Z_OBJCE_P(object);
/* __unset handler is called with one argument:
property name
*/
SEPARATE_ARG_IF_REF(member);
zend_call_method_with_1_params(&object, ce, &ce->__unset, ZEND_UNSET_FUNC_NAME, NULL, member);
zval_ptr_dtor(&member);
}
/* }}} */
static zval *zend_std_call_issetter(zval *object, zval *member TSRMLS_DC) /* {{{ */
{
zval *retval = NULL;
zend_class_entry *ce = Z_OBJCE_P(object);
/* __isset handler is called with one argument:
property name
it should return whether the property is set or not
*/
SEPARATE_ARG_IF_REF(member);
zend_call_method_with_1_params(&object, ce, &ce->__isset, ZEND_ISSET_FUNC_NAME, &retval, member);
zval_ptr_dtor(&member);
return retval;
}
/* }}} */
static zend_always_inline int zend_verify_property_access(zend_property_info *property_info, zend_class_entry *ce TSRMLS_DC) /* {{{ */
{
switch (property_info->flags & ZEND_ACC_PPP_MASK) {
case ZEND_ACC_PUBLIC:
return 1;
case ZEND_ACC_PROTECTED:
return zend_check_protected(property_info->ce, EG(scope));
case ZEND_ACC_PRIVATE:
if ((ce==EG(scope) || property_info->ce == EG(scope)) && EG(scope)) {
return 1;
} else {
return 0;
}
break;
}
return 0;
}
/* }}} */
static zend_always_inline zend_bool is_derived_class(zend_class_entry *child_class, zend_class_entry *parent_class) /* {{{ */
{
child_class = child_class->parent;
while (child_class) {
if (child_class == parent_class) {
return 1;
}
child_class = child_class->parent;
}
return 0;
}
/* }}} */
static zend_always_inline struct _zend_property_info *zend_get_property_info_quick(zend_class_entry *ce, zval *member, int silent, const zend_literal *key TSRMLS_DC) /* {{{ */
{
zend_property_info *property_info;
zend_property_info *scope_property_info;
zend_bool denied_access = 0;
ulong h;
if (key && (property_info = CACHED_POLYMORPHIC_PTR(key->cache_slot, ce)) != NULL) {
return property_info;
}
if (UNEXPECTED(Z_STRVAL_P(member)[0] == '\0')) {
if (!silent) {
if (Z_STRLEN_P(member) == 0) {
zend_error_noreturn(E_ERROR, "Cannot access empty property");
} else {
zend_error_noreturn(E_ERROR, "Cannot access property started with '\\0'");
}
}
return NULL;
}
property_info = NULL;
h = key ? key->hash_value : zend_get_hash_value(Z_STRVAL_P(member), Z_STRLEN_P(member) + 1);
if (zend_hash_quick_find(&ce->properties_info, Z_STRVAL_P(member), Z_STRLEN_P(member)+1, h, (void **) &property_info)==SUCCESS) {
if (UNEXPECTED((property_info->flags & ZEND_ACC_SHADOW) != 0)) {
/* if it's a shadow - go to access it's private */
property_info = NULL;
} else {
if (EXPECTED(zend_verify_property_access(property_info, ce TSRMLS_CC) != 0)) {
if (EXPECTED((property_info->flags & ZEND_ACC_CHANGED) != 0)
&& EXPECTED(!(property_info->flags & ZEND_ACC_PRIVATE))) {
/* We still need to make sure that we're not in a context
* where the right property is a different 'statically linked' private
* continue checking below...
*/
} else {
if (UNEXPECTED((property_info->flags & ZEND_ACC_STATIC) != 0) && !silent) {
zend_error(E_STRICT, "Accessing static property %s::$%s as non static", ce->name, Z_STRVAL_P(member));
}
if (key) {
CACHE_POLYMORPHIC_PTR(key->cache_slot, ce, property_info);
}
return property_info;
}
} else {
/* Try to look in the scope instead */
denied_access = 1;
}
}
}
if (EG(scope) != ce
&& EG(scope)
&& is_derived_class(ce, EG(scope))
&& zend_hash_quick_find(&EG(scope)->properties_info, Z_STRVAL_P(member), Z_STRLEN_P(member)+1, h, (void **) &scope_property_info)==SUCCESS
&& scope_property_info->flags & ZEND_ACC_PRIVATE) {
if (key) {
CACHE_POLYMORPHIC_PTR(key->cache_slot, ce, scope_property_info);
}
return scope_property_info;
} else if (property_info) {
if (UNEXPECTED(denied_access != 0)) {
/* Information was available, but we were denied access. Error out. */
if (!silent) {
zend_error_noreturn(E_ERROR, "Cannot access %s property %s::$%s", zend_visibility_string(property_info->flags), ce->name, Z_STRVAL_P(member));
}
return NULL;
} else {
/* fall through, return property_info... */
if (key) {
CACHE_POLYMORPHIC_PTR(key->cache_slot, ce, property_info);
}
}
} else {
EG(std_property_info).flags = ZEND_ACC_PUBLIC;
EG(std_property_info).name = Z_STRVAL_P(member);
EG(std_property_info).name_length = Z_STRLEN_P(member);
EG(std_property_info).h = h;
EG(std_property_info).ce = ce;
EG(std_property_info).offset = -1;
property_info = &EG(std_property_info);
}
return property_info;
}
/* }}} */
ZEND_API struct _zend_property_info *zend_get_property_info(zend_class_entry *ce, zval *member, int silent TSRMLS_DC) /* {{{ */
{
return zend_get_property_info_quick(ce, member, silent, NULL TSRMLS_CC);
}
/* }}} */
ZEND_API int zend_check_property_access(zend_object *zobj, const char *prop_info_name, int prop_info_name_len TSRMLS_DC) /* {{{ */
{
zend_property_info *property_info;
const char *class_name, *prop_name;
zval member;
zend_unmangle_property_name(prop_info_name, prop_info_name_len, &class_name, &prop_name);
ZVAL_STRING(&member, prop_name, 0);
property_info = zend_get_property_info_quick(zobj->ce, &member, 1, NULL TSRMLS_CC);
if (!property_info) {
return FAILURE;
}
if (class_name && class_name[0] != '*') {
if (!(property_info->flags & ZEND_ACC_PRIVATE)) {
/* we we're looking for a private prop but found a non private one of the same name */
return FAILURE;
} else if (strcmp(prop_info_name+1, property_info->name+1)) {
/* we we're looking for a private prop but found a private one of the same name but another class */
return FAILURE;
}
}
return zend_verify_property_access(property_info, zobj->ce TSRMLS_CC) ? SUCCESS : FAILURE;
}
/* }}} */
static int zend_get_property_guard(zend_object *zobj, zend_property_info *property_info, zval *member, zend_guard **pguard) /* {{{ */
{
zend_property_info info;
zend_guard stub;
if (!property_info) {
property_info = &info;
info.name = Z_STRVAL_P(member);
info.name_length = Z_STRLEN_P(member);
info.h = zend_get_hash_value(Z_STRVAL_P(member), Z_STRLEN_P(member) + 1);
}
if (!zobj->guards) {
ALLOC_HASHTABLE(zobj->guards);
zend_hash_init(zobj->guards, 0, NULL, NULL, 0);
} else if (zend_hash_quick_find(zobj->guards, property_info->name, property_info->name_length+1, property_info->h, (void **) pguard) == SUCCESS) {
return SUCCESS;
}
stub.in_get = 0;
stub.in_set = 0;
stub.in_unset = 0;
stub.in_isset = 0;
return zend_hash_quick_add(zobj->guards, property_info->name, property_info->name_length+1, property_info->h, (void**)&stub, sizeof(stub), (void**) pguard);
}
/* }}} */
zval *zend_std_read_property(zval *object, zval *member, int type, const zend_literal *key TSRMLS_DC) /* {{{ */
{
zend_object *zobj;
zval *tmp_member = NULL;
zval **retval;
zval *rv = NULL;
zend_property_info *property_info;
int silent;
silent = (type == BP_VAR_IS);
zobj = Z_OBJ_P(object);
if (UNEXPECTED(Z_TYPE_P(member) != IS_STRING)) {
ALLOC_ZVAL(tmp_member);
*tmp_member = *member;
INIT_PZVAL(tmp_member);
zval_copy_ctor(tmp_member);
convert_to_string(tmp_member);
member = tmp_member;
key = NULL;
}
#if DEBUG_OBJECT_HANDLERS
fprintf(stderr, "Read object #%d property: %s\n", Z_OBJ_HANDLE_P(object), Z_STRVAL_P(member));
#endif
/* make zend_get_property_info silent if we have getter - we may want to use it */
property_info = zend_get_property_info_quick(zobj->ce, member, (zobj->ce->__get != NULL), key TSRMLS_CC);
if (UNEXPECTED(!property_info) ||
((EXPECTED((property_info->flags & ZEND_ACC_STATIC) == 0) &&
property_info->offset >= 0) ?
(zobj->properties ?
((retval = (zval**)zobj->properties_table[property_info->offset]) == NULL) :
(*(retval = &zobj->properties_table[property_info->offset]) == NULL)) :
(UNEXPECTED(!zobj->properties) ||
UNEXPECTED(zend_hash_quick_find(zobj->properties, property_info->name, property_info->name_length+1, property_info->h, (void **) &retval) == FAILURE)))) {
zend_guard *guard = NULL;
if (zobj->ce->__get &&
zend_get_property_guard(zobj, property_info, member, &guard) == SUCCESS &&
!guard->in_get) {
/* have getter - try with it! */
Z_ADDREF_P(object);
if (PZVAL_IS_REF(object)) {
SEPARATE_ZVAL(&object);
}
guard->in_get = 1; /* prevent circular getting */
rv = zend_std_call_getter(object, member TSRMLS_CC);
guard->in_get = 0;
if (rv) {
retval = &rv;
if (!Z_ISREF_P(rv) &&
(type == BP_VAR_W || type == BP_VAR_RW || type == BP_VAR_UNSET)) {
if (Z_REFCOUNT_P(rv) > 0) {
zval *tmp = rv;
ALLOC_ZVAL(rv);
*rv = *tmp;
zval_copy_ctor(rv);
Z_UNSET_ISREF_P(rv);
Z_SET_REFCOUNT_P(rv, 0);
}
if (UNEXPECTED(Z_TYPE_P(rv) != IS_OBJECT)) {
zend_error(E_NOTICE, "Indirect modification of overloaded property %s::$%s has no effect", zobj->ce->name, Z_STRVAL_P(member));
}
}
} else {
retval = &EG(uninitialized_zval_ptr);
}
if (EXPECTED(*retval != object)) {
zval_ptr_dtor(&object);
} else {
Z_DELREF_P(object);
}
} else {
if (zobj->ce->__get && guard && guard->in_get == 1) {
if (Z_STRVAL_P(member)[0] == '\0') {
if (Z_STRLEN_P(member) == 0) {
zend_error(E_ERROR, "Cannot access empty property");
} else {
zend_error(E_ERROR, "Cannot access property started with '\\0'");
}
}
}
if (!silent) {
zend_error(E_NOTICE,"Undefined property: %s::$%s", zobj->ce->name, Z_STRVAL_P(member));
}
retval = &EG(uninitialized_zval_ptr);
}
}
if (UNEXPECTED(tmp_member != NULL)) {
Z_ADDREF_PP(retval);
zval_ptr_dtor(&tmp_member);
Z_DELREF_PP(retval);
}
return *retval;
}
/* }}} */
ZEND_API void zend_std_write_property(zval *object, zval *member, zval *value, const zend_literal *key TSRMLS_DC) /* {{{ */
{
zend_object *zobj;
zval *tmp_member = NULL;
zval **variable_ptr;
zend_property_info *property_info;
zobj = Z_OBJ_P(object);
if (UNEXPECTED(Z_TYPE_P(member) != IS_STRING)) {
ALLOC_ZVAL(tmp_member);
*tmp_member = *member;
INIT_PZVAL(tmp_member);
zval_copy_ctor(tmp_member);
convert_to_string(tmp_member);
member = tmp_member;
key = NULL;
}
property_info = zend_get_property_info_quick(zobj->ce, member, (zobj->ce->__set != NULL), key TSRMLS_CC);
if (EXPECTED(property_info != NULL) &&
((EXPECTED((property_info->flags & ZEND_ACC_STATIC) == 0) &&
property_info->offset >= 0) ?
(zobj->properties ?
((variable_ptr = (zval**)zobj->properties_table[property_info->offset]) != NULL) :
(*(variable_ptr = &zobj->properties_table[property_info->offset]) != NULL)) :
(EXPECTED(zobj->properties != NULL) &&
EXPECTED(zend_hash_quick_find(zobj->properties, property_info->name, property_info->name_length+1, property_info->h, (void **) &variable_ptr) == SUCCESS)))) {
/* if we already have this value there, we don't actually need to do anything */
if (EXPECTED(*variable_ptr != value)) {
/* if we are assigning reference, we shouldn't move it, but instead assign variable
to the same pointer */
if (PZVAL_IS_REF(*variable_ptr)) {
zval garbage = **variable_ptr; /* old value should be destroyed */
/* To check: can't *variable_ptr be some system variable like error_zval here? */
Z_TYPE_PP(variable_ptr) = Z_TYPE_P(value);
(*variable_ptr)->value = value->value;
if (Z_REFCOUNT_P(value) > 0) {
zval_copy_ctor(*variable_ptr);
}
zval_dtor(&garbage);
} else {
zval *garbage = *variable_ptr;
/* if we assign referenced variable, we should separate it */
Z_ADDREF_P(value);
if (PZVAL_IS_REF(value)) {
SEPARATE_ZVAL(&value);
}
*variable_ptr = value;
zval_ptr_dtor(&garbage);
}
}
} else {
zend_guard *guard = NULL;
if (zobj->ce->__set &&
zend_get_property_guard(zobj, property_info, member, &guard) == SUCCESS &&
!guard->in_set) {
Z_ADDREF_P(object);
if (PZVAL_IS_REF(object)) {
SEPARATE_ZVAL(&object);
}
guard->in_set = 1; /* prevent circular setting */
if (zend_std_call_setter(object, member, value TSRMLS_CC) != SUCCESS) {
/* for now, just ignore it - __set should take care of warnings, etc. */
}
guard->in_set = 0;
zval_ptr_dtor(&object);
} else if (EXPECTED(property_info != NULL)) {
/* if we assign referenced variable, we should separate it */
Z_ADDREF_P(value);
if (PZVAL_IS_REF(value)) {
SEPARATE_ZVAL(&value);
}
if (EXPECTED((property_info->flags & ZEND_ACC_STATIC) == 0) &&
property_info->offset >= 0) {
if (!zobj->properties) {
zobj->properties_table[property_info->offset] = value;
} else if (zobj->properties_table[property_info->offset]) {
*(zval**)zobj->properties_table[property_info->offset] = value;
} else {
zend_hash_quick_update(zobj->properties, property_info->name, property_info->name_length+1, property_info->h, &value, sizeof(zval *), (void**)&zobj->properties_table[property_info->offset]);
}
} else {
if (!zobj->properties) {
rebuild_object_properties(zobj);
}
zend_hash_quick_update(zobj->properties, property_info->name, property_info->name_length+1, property_info->h, &value, sizeof(zval *), NULL);
}
} else if (zobj->ce->__set && guard && guard->in_set == 1) {
if (Z_STRVAL_P(member)[0] == '\0') {
if (Z_STRLEN_P(member) == 0) {
zend_error(E_ERROR, "Cannot access empty property");
} else {
zend_error(E_ERROR, "Cannot access property started with '\\0'");
}
}
}
}
if (UNEXPECTED(tmp_member != NULL)) {
zval_ptr_dtor(&tmp_member);
}
}
/* }}} */
zval *zend_std_read_dimension(zval *object, zval *offset, int type TSRMLS_DC) /* {{{ */
{
zend_class_entry *ce = Z_OBJCE_P(object);
zval *retval;
if (EXPECTED(instanceof_function_ex(ce, zend_ce_arrayaccess, 1 TSRMLS_CC) != 0)) {
if(offset == NULL) {
/* [] construct */
ALLOC_INIT_ZVAL(offset);
} else {
SEPARATE_ARG_IF_REF(offset);
}
zend_call_method_with_1_params(&object, ce, NULL, "offsetget", &retval, offset);
zval_ptr_dtor(&offset);
if (UNEXPECTED(!retval)) {
if (UNEXPECTED(!EG(exception))) {
zend_error_noreturn(E_ERROR, "Undefined offset for object of type %s used as array", ce->name);
}
return 0;
}
/* Undo PZVAL_LOCK() */
Z_DELREF_P(retval);
return retval;
} else {
zend_error_noreturn(E_ERROR, "Cannot use object of type %s as array", ce->name);
return 0;
}
}
/* }}} */
static void zend_std_write_dimension(zval *object, zval *offset, zval *value TSRMLS_DC) /* {{{ */
{
zend_class_entry *ce = Z_OBJCE_P(object);
if (EXPECTED(instanceof_function_ex(ce, zend_ce_arrayaccess, 1 TSRMLS_CC) != 0)) {
if (!offset) {
ALLOC_INIT_ZVAL(offset);
} else {
SEPARATE_ARG_IF_REF(offset);
}
zend_call_method_with_2_params(&object, ce, NULL, "offsetset", NULL, offset, value);
zval_ptr_dtor(&offset);
} else {
zend_error_noreturn(E_ERROR, "Cannot use object of type %s as array", ce->name);
}
}
/* }}} */
static int zend_std_has_dimension(zval *object, zval *offset, int check_empty TSRMLS_DC) /* {{{ */
{
zend_class_entry *ce = Z_OBJCE_P(object);
zval *retval;
int result;
if (EXPECTED(instanceof_function_ex(ce, zend_ce_arrayaccess, 1 TSRMLS_CC) != 0)) {
SEPARATE_ARG_IF_REF(offset);
zend_call_method_with_1_params(&object, ce, NULL, "offsetexists", &retval, offset);
if (EXPECTED(retval != NULL)) {
result = i_zend_is_true(retval);
zval_ptr_dtor(&retval);
if (check_empty && result && EXPECTED(!EG(exception))) {
zend_call_method_with_1_params(&object, ce, NULL, "offsetget", &retval, offset);
if (retval) {
result = i_zend_is_true(retval);
zval_ptr_dtor(&retval);
}
}
} else {
result = 0;
}
zval_ptr_dtor(&offset);
} else {
zend_error_noreturn(E_ERROR, "Cannot use object of type %s as array", ce->name);
return 0;
}
return result;
}
/* }}} */
static zval **zend_std_get_property_ptr_ptr(zval *object, zval *member, const zend_literal *key TSRMLS_DC) /* {{{ */
{
zend_object *zobj;
zval tmp_member;
zval **retval;
zend_property_info *property_info;
zobj = Z_OBJ_P(object);
if (UNEXPECTED(Z_TYPE_P(member) != IS_STRING)) {
tmp_member = *member;
zval_copy_ctor(&tmp_member);
convert_to_string(&tmp_member);
member = &tmp_member;
key = NULL;
}
#if DEBUG_OBJECT_HANDLERS
fprintf(stderr, "Ptr object #%d property: %s\n", Z_OBJ_HANDLE_P(object), Z_STRVAL_P(member));
#endif
property_info = zend_get_property_info_quick(zobj->ce, member, (zobj->ce->__get != NULL), key TSRMLS_CC);
if (UNEXPECTED(!property_info) ||
((EXPECTED((property_info->flags & ZEND_ACC_STATIC) == 0) &&
property_info->offset >= 0) ?
(zobj->properties ?
((retval = (zval**)zobj->properties_table[property_info->offset]) == NULL) :
(*(retval = &zobj->properties_table[property_info->offset]) == NULL)) :
(UNEXPECTED(!zobj->properties) ||
UNEXPECTED(zend_hash_quick_find(zobj->properties, property_info->name, property_info->name_length+1, property_info->h, (void **) &retval) == FAILURE)))) {
zval *new_zval;
zend_guard *guard;
if (!zobj->ce->__get ||
zend_get_property_guard(zobj, property_info, member, &guard) != SUCCESS ||
(property_info && guard->in_get)) {
/* we don't have access controls - will just add it */
new_zval = &EG(uninitialized_zval);
/* zend_error(E_NOTICE, "Undefined property: %s", Z_STRVAL_P(member)); */
Z_ADDREF_P(new_zval);
if (EXPECTED((property_info->flags & ZEND_ACC_STATIC) == 0) &&
property_info->offset >= 0) {
if (!zobj->properties) {
zobj->properties_table[property_info->offset] = new_zval;
retval = &zobj->properties_table[property_info->offset];
} else if (zobj->properties_table[property_info->offset]) {
*(zval**)zobj->properties_table[property_info->offset] = new_zval;
retval = (zval**)zobj->properties_table[property_info->offset];
} else {
zend_hash_quick_update(zobj->properties, property_info->name, property_info->name_length+1, property_info->h, &new_zval, sizeof(zval *), (void**)&zobj->properties_table[property_info->offset]);
retval = (zval**)zobj->properties_table[property_info->offset];
}
} else {
if (!zobj->properties) {
rebuild_object_properties(zobj);
}
zend_hash_quick_update(zobj->properties, property_info->name, property_info->name_length+1, property_info->h, &new_zval, sizeof(zval *), (void **) &retval);
}
} else {
/* we do have getter - fail and let it try again with usual get/set */
retval = NULL;
}
}
if (UNEXPECTED(member == &tmp_member)) {
zval_dtor(member);
}
return retval;
}
/* }}} */
static void zend_std_unset_property(zval *object, zval *member, const zend_literal *key TSRMLS_DC) /* {{{ */
{
zend_object *zobj;
zval *tmp_member = NULL;
zend_property_info *property_info;
zobj = Z_OBJ_P(object);
if (UNEXPECTED(Z_TYPE_P(member) != IS_STRING)) {
ALLOC_ZVAL(tmp_member);
*tmp_member = *member;
INIT_PZVAL(tmp_member);
zval_copy_ctor(tmp_member);
convert_to_string(tmp_member);
member = tmp_member;
key = NULL;
}
property_info = zend_get_property_info_quick(zobj->ce, member, (zobj->ce->__unset != NULL), key TSRMLS_CC);
if (EXPECTED(property_info != NULL) &&
EXPECTED((property_info->flags & ZEND_ACC_STATIC) == 0) &&
!zobj->properties &&
property_info->offset >= 0 &&
EXPECTED(zobj->properties_table[property_info->offset] != NULL)) {
zval_ptr_dtor(&zobj->properties_table[property_info->offset]);
zobj->properties_table[property_info->offset] = NULL;
} else if (UNEXPECTED(!property_info) ||
!zobj->properties ||
UNEXPECTED(zend_hash_quick_del(zobj->properties, property_info->name, property_info->name_length+1, property_info->h) == FAILURE)) {
zend_guard *guard = NULL;
if (zobj->ce->__unset &&
zend_get_property_guard(zobj, property_info, member, &guard) == SUCCESS &&
!guard->in_unset) {
/* have unseter - try with it! */
Z_ADDREF_P(object);
if (PZVAL_IS_REF(object)) {
SEPARATE_ZVAL(&object);
}
guard->in_unset = 1; /* prevent circular unsetting */
zend_std_call_unsetter(object, member TSRMLS_CC);
guard->in_unset = 0;
zval_ptr_dtor(&object);
} else if (zobj->ce->__unset && guard && guard->in_unset == 1) {
if (Z_STRVAL_P(member)[0] == '\0') {
if (Z_STRLEN_P(member) == 0) {
zend_error(E_ERROR, "Cannot access empty property");
} else {
zend_error(E_ERROR, "Cannot access property started with '\\0'");
}
}
}
} else if (EXPECTED(property_info != NULL) &&
EXPECTED((property_info->flags & ZEND_ACC_STATIC) == 0) &&
property_info->offset >= 0) {
zobj->properties_table[property_info->offset] = NULL;
}
if (UNEXPECTED(tmp_member != NULL)) {
zval_ptr_dtor(&tmp_member);
}
}
/* }}} */
static void zend_std_unset_dimension(zval *object, zval *offset TSRMLS_DC) /* {{{ */
{
zend_class_entry *ce = Z_OBJCE_P(object);
if (instanceof_function_ex(ce, zend_ce_arrayaccess, 1 TSRMLS_CC)) {
SEPARATE_ARG_IF_REF(offset);
zend_call_method_with_1_params(&object, ce, NULL, "offsetunset", NULL, offset);
zval_ptr_dtor(&offset);
} else {
zend_error_noreturn(E_ERROR, "Cannot use object of type %s as array", ce->name);
}
}
/* }}} */
ZEND_API void zend_std_call_user_call(INTERNAL_FUNCTION_PARAMETERS) /* {{{ */
{
zend_internal_function *func = (zend_internal_function *)EG(current_execute_data)->function_state.function;
zval *method_name_ptr, *method_args_ptr;
zval *method_result_ptr = NULL;
zend_class_entry *ce = Z_OBJCE_P(this_ptr);
ALLOC_ZVAL(method_args_ptr);
INIT_PZVAL(method_args_ptr);
array_init_size(method_args_ptr, ZEND_NUM_ARGS());
if (UNEXPECTED(zend_copy_parameters_array(ZEND_NUM_ARGS(), method_args_ptr TSRMLS_CC) == FAILURE)) {
zval_dtor(method_args_ptr);
zend_error_noreturn(E_ERROR, "Cannot get arguments for __call");
RETURN_FALSE;
}
ALLOC_ZVAL(method_name_ptr);
INIT_PZVAL(method_name_ptr);
ZVAL_STRING(method_name_ptr, func->function_name, 0); /* no dup - it's a copy */
/* __call handler is called with two arguments:
method name
array of method parameters
*/
zend_call_method_with_2_params(&this_ptr, ce, &ce->__call, ZEND_CALL_FUNC_NAME, &method_result_ptr, method_name_ptr, method_args_ptr);
if (method_result_ptr) {
if (Z_ISREF_P(method_result_ptr) || Z_REFCOUNT_P(method_result_ptr) > 1) {
RETVAL_ZVAL(method_result_ptr, 1, 1);
} else {
RETVAL_ZVAL(method_result_ptr, 0, 1);
}
}
/* now destruct all auxiliaries */
zval_ptr_dtor(&method_args_ptr);
zval_ptr_dtor(&method_name_ptr);
/* destruct the function also, then - we have allocated it in get_method */
efree(func);
}
/* }}} */
/* Ensures that we're allowed to call a private method.
* Returns the function address that should be called, or NULL
* if no such function exists.
*/
static inline zend_function *zend_check_private_int(zend_function *fbc, zend_class_entry *ce, char *function_name_strval, int function_name_strlen, ulong hash_value TSRMLS_DC) /* {{{ */
{
if (!ce) {
return 0;
}
/* We may call a private function if:
* 1. The class of our object is the same as the scope, and the private
* function (EX(fbc)) has the same scope.
* 2. One of our parent classes are the same as the scope, and it contains
* a private function with the same name that has the same scope.
*/
if (fbc->common.scope == ce && EG(scope) == ce) {
/* rule #1 checks out ok, allow the function call */
return fbc;
}
/* Check rule #2 */
ce = ce->parent;
while (ce) {
if (ce == EG(scope)) {
if (zend_hash_quick_find(&ce->function_table, function_name_strval, function_name_strlen+1, hash_value, (void **) &fbc)==SUCCESS
&& fbc->op_array.fn_flags & ZEND_ACC_PRIVATE
&& fbc->common.scope == EG(scope)) {
return fbc;
}
break;
}
ce = ce->parent;
}
return NULL;
}
/* }}} */
ZEND_API int zend_check_private(zend_function *fbc, zend_class_entry *ce, char *function_name_strval, int function_name_strlen TSRMLS_DC) /* {{{ */
{
return zend_check_private_int(fbc, ce, function_name_strval, function_name_strlen, zend_hash_func(function_name_strval, function_name_strlen+1) TSRMLS_CC) != NULL;
}
/* }}} */
/* Ensures that we're allowed to call a protected method.
*/
ZEND_API int zend_check_protected(zend_class_entry *ce, zend_class_entry *scope) /* {{{ */
{
zend_class_entry *fbc_scope = ce;
/* Is the context that's calling the function, the same as one of
* the function's parents?
*/
while (fbc_scope) {
if (fbc_scope==scope) {
return 1;
}
fbc_scope = fbc_scope->parent;
}
/* Is the function's scope the same as our current object context,
* or any of the parents of our context?
*/
while (scope) {
if (scope==ce) {
return 1;
}
scope = scope->parent;
}
return 0;
}
/* }}} */
static inline zend_class_entry * zend_get_function_root_class(zend_function *fbc) /* {{{ */
{
return fbc->common.prototype ? fbc->common.prototype->common.scope : fbc->common.scope;
}
/* }}} */
static inline union _zend_function *zend_get_user_call_function(zend_class_entry *ce, const char *method_name, int method_len) /* {{{ */
{
zend_internal_function *call_user_call = emalloc(sizeof(zend_internal_function));
call_user_call->type = ZEND_INTERNAL_FUNCTION;
call_user_call->module = (ce->type == ZEND_INTERNAL_CLASS) ? ce->info.internal.module : NULL;
call_user_call->handler = zend_std_call_user_call;
call_user_call->arg_info = NULL;
call_user_call->num_args = 0;
call_user_call->scope = ce;
call_user_call->fn_flags = ZEND_ACC_CALL_VIA_HANDLER;
call_user_call->function_name = estrndup(method_name, method_len);
return (union _zend_function *)call_user_call;
}
/* }}} */
static union _zend_function *zend_std_get_method(zval **object_ptr, char *method_name, int method_len, const zend_literal *key TSRMLS_DC) /* {{{ */
{
zend_function *fbc;
zval *object = *object_ptr;
zend_object *zobj = Z_OBJ_P(object);
ulong hash_value;
char *lc_method_name;
ALLOCA_FLAG(use_heap)
if (EXPECTED(key != NULL)) {
lc_method_name = Z_STRVAL(key->constant);
hash_value = key->hash_value;
} else {
lc_method_name = do_alloca(method_len+1, use_heap);
/* Create a zend_copy_str_tolower(dest, src, src_length); */
zend_str_tolower_copy(lc_method_name, method_name, method_len);