/
zend_execute.c
1313 lines (1157 loc) · 38.5 KB
/
zend_execute.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) 1998-2010 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 |
| license@zend.com so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Andi Gutmans <andi@zend.com> |
| Zeev Suraski <zeev@zend.com> |
+----------------------------------------------------------------------+
*/
/* $Id$ */
#define ZEND_INTENSIVE_DEBUGGING 0
#include <stdio.h>
#include <signal.h>
#include "zend.h"
#include "zend_compile.h"
#include "zend_execute.h"
#include "zend_API.h"
#include "zend_ptr_stack.h"
#include "zend_constants.h"
#include "zend_extensions.h"
#include "zend_ini.h"
#include "zend_exceptions.h"
#include "zend_interfaces.h"
#include "zend_closures.h"
#include "zend_vm.h"
/* Virtual current working directory support */
#include "tsrm_virtual_cwd.h"
#define _CONST_CODE 0
#define _TMP_CODE 1
#define _VAR_CODE 2
#define _UNUSED_CODE 3
#define _CV_CODE 4
typedef int (*incdec_t)(zval *);
#define get_zval_ptr(node, Ts, should_free, type) _get_zval_ptr(node, Ts, should_free, type TSRMLS_CC)
#define get_zval_ptr_ptr(node, Ts, should_free, type) _get_zval_ptr_ptr(node, Ts, should_free, type TSRMLS_CC)
#define get_obj_zval_ptr(node, Ts, should_free, type) _get_obj_zval_ptr(node, Ts, should_free, type TSRMLS_CC)
#define get_obj_zval_ptr_ptr(node, Ts, should_free, type) _get_obj_zval_ptr_ptr(node, Ts, should_free, type TSRMLS_CC)
/* Prototypes */
static void zend_extension_statement_handler(const zend_extension *extension, zend_op_array *op_array TSRMLS_DC);
static void zend_extension_fcall_begin_handler(const zend_extension *extension, zend_op_array *op_array TSRMLS_DC);
static void zend_extension_fcall_end_handler(const zend_extension *extension, zend_op_array *op_array TSRMLS_DC);
#define RETURN_VALUE_USED(opline) (!((opline)->result.u.EA.type & EXT_TYPE_UNUSED))
#define EX_T(offset) (*(temp_variable *)((char *) EX(Ts) + offset))
#define T(offset) (*(temp_variable *)((char *) Ts + offset))
#define TEMP_VAR_STACK_LIMIT 2000
static zend_always_inline void zend_pzval_unlock_func(zval *z, zend_free_op *should_free, int unref TSRMLS_DC)
{
if (!Z_DELREF_P(z)) {
Z_SET_REFCOUNT_P(z, 1);
Z_UNSET_ISREF_P(z);
should_free->var = z;
/* should_free->is_var = 1; */
} else {
should_free->var = 0;
if (unref && Z_ISREF_P(z) && Z_REFCOUNT_P(z) == 1) {
Z_UNSET_ISREF_P(z);
}
GC_ZVAL_CHECK_POSSIBLE_ROOT(z);
}
}
static zend_always_inline void zend_pzval_unlock_free_func(zval *z TSRMLS_DC)
{
if (!Z_DELREF_P(z)) {
if (z != &EG(uninitialized_zval)) {
GC_REMOVE_ZVAL_FROM_BUFFER(z);
zval_dtor(z);
efree(z);
}
}
}
#define PZVAL_UNLOCK(z, f) zend_pzval_unlock_func(z, f, 1 TSRMLS_CC)
#define PZVAL_UNLOCK_EX(z, f, u) zend_pzval_unlock_func(z, f, u TSRMLS_CC)
#define PZVAL_UNLOCK_FREE(z) zend_pzval_unlock_free_func(z TSRMLS_CC)
#define PZVAL_LOCK(z) Z_ADDREF_P((z))
#define RETURN_VALUE_UNUSED(pzn) (((pzn)->u.EA.type & EXT_TYPE_UNUSED))
#define SELECTIVE_PZVAL_LOCK(pzv, pzn) if (!RETURN_VALUE_UNUSED(pzn)) { PZVAL_LOCK(pzv); }
#define AI_USE_PTR(ai) \
if ((ai).ptr_ptr) { \
(ai).ptr = *((ai).ptr_ptr); \
(ai).ptr_ptr = &((ai).ptr); \
} else { \
(ai).ptr = NULL; \
}
#define AI_SET_PTR(ai, val) \
(ai).ptr = (val); \
(ai).ptr_ptr = &((ai).ptr);
#define FREE_OP(should_free) \
if (should_free.var) { \
if ((zend_uintptr_t)should_free.var & 1L) { \
zval_dtor((zval*)((zend_uintptr_t)should_free.var & ~1L)); \
} else { \
zval_ptr_dtor(&should_free.var); \
} \
}
#define FREE_OP_IF_VAR(should_free) \
if (should_free.var != NULL && (((zend_uintptr_t)should_free.var & 1L) == 0)) { \
zval_ptr_dtor(&should_free.var); \
}
#define FREE_OP_VAR_PTR(should_free) \
if (should_free.var) { \
zval_ptr_dtor(&should_free.var); \
}
#define TMP_FREE(z) (zval*)(((zend_uintptr_t)(z)) | 1L)
#define IS_TMP_FREE(should_free) ((zend_uintptr_t)should_free.var & 1L)
#define INIT_PZVAL_COPY(z,v) \
(z)->value = (v)->value; \
Z_TYPE_P(z) = Z_TYPE_P(v); \
Z_SET_REFCOUNT_P(z, 1); \
Z_UNSET_ISREF_P(z);
#define MAKE_REAL_ZVAL_PTR(val) \
do { \
zval *_tmp; \
ALLOC_ZVAL(_tmp); \
_tmp->value = (val)->value; \
Z_TYPE_P(_tmp) = Z_TYPE_P(val); \
Z_SET_REFCOUNT_P(_tmp, 1); \
Z_UNSET_ISREF_P(_tmp); \
val = _tmp; \
} while (0)
/* End of zend_execute_locks.h */
#define CV_OF(i) (EG(current_execute_data)->CVs[i])
#define CV_DEF_OF(i) (EG(active_op_array)->vars[i])
#define CTOR_CALL_BIT 0x1
#define CTOR_USED_BIT 0x2
#define IS_CTOR_CALL(ce) (((zend_uintptr_t)(ce)) & CTOR_CALL_BIT)
#define IS_CTOR_USED(ce) (((zend_uintptr_t)(ce)) & CTOR_USED_BIT)
#define ENCODE_CTOR(ce, used) \
((zend_class_entry*)(((zend_uintptr_t)(ce)) | CTOR_CALL_BIT | ((used) ? CTOR_USED_BIT : 0)))
#define DECODE_CTOR(ce) \
((zend_class_entry*)(((zend_uintptr_t)(ce)) & ~(CTOR_CALL_BIT|CTOR_USED_BIT)))
ZEND_API zval** zend_get_compiled_variable_value(const zend_execute_data *execute_data_ptr, zend_uint var)
{
return execute_data_ptr->CVs[var];
}
static zend_always_inline zval *_get_zval_ptr_tmp(const znode *node, const temp_variable *Ts, zend_free_op *should_free TSRMLS_DC)
{
return should_free->var = &T(node->u.var).tmp_var;
}
static zval *_get_zval_ptr_var_string_offset(const znode *node, const temp_variable *Ts, zend_free_op *should_free TSRMLS_DC)
{
temp_variable *T = &T(node->u.var);
zval *str = T->str_offset.str;
zval *ptr;
/* string offset */
ALLOC_ZVAL(ptr);
T->str_offset.ptr = ptr;
should_free->var = ptr;
if (T->str_offset.str->type != IS_STRING
|| ((int)T->str_offset.offset < 0)
|| (T->str_offset.str->value.str.len <= (int)T->str_offset.offset)) {
ptr->value.str.val = STR_EMPTY_ALLOC();
ptr->value.str.len = 0;
} else {
ptr->value.str.val = estrndup(str->value.str.val + T->str_offset.offset, 1);
ptr->value.str.len = 1;
}
PZVAL_UNLOCK_FREE(str);
Z_SET_REFCOUNT_P(ptr, 1);
Z_SET_ISREF_P(ptr);
ptr->type = IS_STRING;
return ptr;
}
static zend_always_inline zval *_get_zval_ptr_var(const znode *node, const temp_variable *Ts, zend_free_op *should_free TSRMLS_DC)
{
zval *ptr = T(node->u.var).var.ptr;
if (EXPECTED(ptr != NULL)) {
PZVAL_UNLOCK(ptr, should_free);
return ptr;
} else {
return _get_zval_ptr_var_string_offset(node, Ts, should_free TSRMLS_CC);
}
}
static zval **_get_zval_cv_lookup(zval ***ptr, zend_uint var, int type TSRMLS_DC)
{
zend_compiled_variable *cv = &CV_DEF_OF(var);
if (!EG(active_symbol_table) ||
zend_hash_quick_find(EG(active_symbol_table), cv->name, cv->name_len+1, cv->hash_value, (void **)ptr)==FAILURE) {
switch (type) {
case BP_VAR_R:
case BP_VAR_UNSET:
zend_error(E_NOTICE, "Undefined variable: %s", cv->name);
/* break missing intentionally */
case BP_VAR_IS:
return &EG(uninitialized_zval_ptr);
break;
case BP_VAR_RW:
zend_error(E_NOTICE, "Undefined variable: %s", cv->name);
/* break missing intentionally */
case BP_VAR_W:
Z_ADDREF(EG(uninitialized_zval));
if (!EG(active_symbol_table)) {
*ptr = (zval**)EG(current_execute_data)->CVs + (EG(active_op_array)->last_var + var);
**ptr = &EG(uninitialized_zval);
} else {
zend_hash_quick_update(EG(active_symbol_table), cv->name, cv->name_len+1, cv->hash_value, &EG(uninitialized_zval_ptr), sizeof(zval *), (void **)ptr);
}
break;
}
}
return *ptr;
}
static zend_always_inline zval *_get_zval_ptr_cv(const znode *node, const temp_variable *Ts, int type TSRMLS_DC)
{
zval ***ptr = &CV_OF(node->u.var);
if (UNEXPECTED(*ptr == NULL)) {
return *_get_zval_cv_lookup(ptr, node->u.var, type TSRMLS_CC);
}
return **ptr;
}
static inline zval *_get_zval_ptr(znode *node, const temp_variable *Ts, zend_free_op *should_free, int type TSRMLS_DC)
{
/* should_free->is_var = 0; */
switch (node->op_type) {
case IS_CONST:
should_free->var = 0;
return &node->u.constant;
break;
case IS_TMP_VAR:
should_free->var = TMP_FREE(&T(node->u.var).tmp_var);
return &T(node->u.var).tmp_var;
break;
case IS_VAR:
return _get_zval_ptr_var(node, Ts, should_free TSRMLS_CC);
break;
case IS_UNUSED:
should_free->var = 0;
return NULL;
break;
case IS_CV:
should_free->var = 0;
return _get_zval_ptr_cv(node, Ts, type TSRMLS_CC);
break;
EMPTY_SWITCH_DEFAULT_CASE()
}
return NULL;
}
static zend_always_inline zval **_get_zval_ptr_ptr_var(const znode *node, const temp_variable *Ts, zend_free_op *should_free TSRMLS_DC)
{
zval** ptr_ptr = T(node->u.var).var.ptr_ptr;
if (EXPECTED(ptr_ptr != NULL)) {
PZVAL_UNLOCK(*ptr_ptr, should_free);
} else {
/* string offset */
PZVAL_UNLOCK(T(node->u.var).str_offset.str, should_free);
}
return ptr_ptr;
}
static zend_always_inline zval **_get_zval_ptr_ptr_cv(const znode *node, const temp_variable *Ts, int type TSRMLS_DC)
{
zval ***ptr = &CV_OF(node->u.var);
if (UNEXPECTED(*ptr == NULL)) {
return _get_zval_cv_lookup(ptr, node->u.var, type TSRMLS_CC);
}
return *ptr;
}
static inline zval **_get_zval_ptr_ptr(const znode *node, const temp_variable *Ts, zend_free_op *should_free, int type TSRMLS_DC)
{
if (node->op_type == IS_CV) {
should_free->var = 0;
return _get_zval_ptr_ptr_cv(node, Ts, type TSRMLS_CC);
} else if (node->op_type == IS_VAR) {
return _get_zval_ptr_ptr_var(node, Ts, should_free TSRMLS_CC);
} else {
should_free->var = 0;
return NULL;
}
}
static zend_always_inline zval *_get_obj_zval_ptr_unused(TSRMLS_D)
{
if (EXPECTED(EG(This) != NULL)) {
return EG(This);
} else {
zend_error_noreturn(E_ERROR, "Using $this when not in object context");
return NULL;
}
}
static inline zval **_get_obj_zval_ptr_ptr(const znode *op, const temp_variable *Ts, zend_free_op *should_free, int type TSRMLS_DC)
{
if (op->op_type == IS_UNUSED) {
if (EXPECTED(EG(This) != NULL)) {
/* this should actually never be modified, _ptr_ptr is modified only when
the object is empty */
should_free->var = 0;
return &EG(This);
} else {
zend_error_noreturn(E_ERROR, "Using $this when not in object context");
}
}
return get_zval_ptr_ptr(op, Ts, should_free, type);
}
static zend_always_inline zval **_get_obj_zval_ptr_ptr_unused(TSRMLS_D)
{
if (EXPECTED(EG(This) != NULL)) {
return &EG(This);
} else {
zend_error_noreturn(E_ERROR, "Using $this when not in object context");
return NULL;
}
}
static inline zval *_get_obj_zval_ptr(znode *op, const temp_variable *Ts, zend_free_op *should_free, int type TSRMLS_DC)
{
if (op->op_type == IS_UNUSED) {
if (EXPECTED(EG(This) != NULL)) {
should_free->var = 0;
return EG(This);
} else {
zend_error_noreturn(E_ERROR, "Using $this when not in object context");
}
}
return get_zval_ptr(op, Ts, should_free, type);
}
static inline void zend_switch_free(temp_variable *T, int extended_value TSRMLS_DC)
{
if (T->var.ptr) {
if (extended_value & ZEND_FE_RESET_VARIABLE) { /* foreach() free */
Z_DELREF_P(T->var.ptr);
}
zval_ptr_dtor(&T->var.ptr);
} else if (!T->var.ptr_ptr) {
/* perform the equivalent of equivalent of a
* quick & silent get_zval_ptr, and FREE_OP
*/
PZVAL_UNLOCK_FREE(T->str_offset.str);
}
}
static void zend_assign_to_variable_reference(zval **variable_ptr_ptr, zval **value_ptr_ptr TSRMLS_DC)
{
zval *variable_ptr = *variable_ptr_ptr;
zval *value_ptr = *value_ptr_ptr;
if (variable_ptr == EG(error_zval_ptr) || value_ptr==EG(error_zval_ptr)) {
variable_ptr_ptr = &EG(uninitialized_zval_ptr);
} else if (variable_ptr != value_ptr) {
if (!PZVAL_IS_REF(value_ptr)) {
/* break it away */
Z_DELREF_P(value_ptr);
if (Z_REFCOUNT_P(value_ptr)>0) {
ALLOC_ZVAL(*value_ptr_ptr);
**value_ptr_ptr = *value_ptr;
value_ptr = *value_ptr_ptr;
zendi_zval_copy_ctor(*value_ptr);
}
Z_SET_REFCOUNT_P(value_ptr, 1);
Z_SET_ISREF_P(value_ptr);
}
*variable_ptr_ptr = value_ptr;
Z_ADDREF_P(value_ptr);
zval_ptr_dtor(&variable_ptr);
} else if (!Z_ISREF_P(variable_ptr)) {
if (variable_ptr_ptr == value_ptr_ptr) {
SEPARATE_ZVAL(variable_ptr_ptr);
} else if (variable_ptr==EG(uninitialized_zval_ptr)
|| Z_REFCOUNT_P(variable_ptr)>2) {
/* we need to separate */
Z_SET_REFCOUNT_P(variable_ptr, Z_REFCOUNT_P(variable_ptr) - 2);
ALLOC_ZVAL(*variable_ptr_ptr);
**variable_ptr_ptr = *variable_ptr;
zval_copy_ctor(*variable_ptr_ptr);
*value_ptr_ptr = *variable_ptr_ptr;
Z_SET_REFCOUNT_PP(variable_ptr_ptr, 2);
}
Z_SET_ISREF_PP(variable_ptr_ptr);
}
}
/* this should modify object only if it's empty */
static inline void make_real_object(zval **object_ptr TSRMLS_DC)
{
if (Z_TYPE_PP(object_ptr) == IS_NULL
|| (Z_TYPE_PP(object_ptr) == IS_BOOL && Z_LVAL_PP(object_ptr) == 0)
|| (Z_TYPE_PP(object_ptr) == IS_STRING && Z_STRLEN_PP(object_ptr) == 0)
) {
zend_error(E_STRICT, "Creating default object from empty value");
SEPARATE_ZVAL_IF_NOT_REF(object_ptr);
zval_dtor(*object_ptr);
object_init(*object_ptr);
}
}
static inline char * zend_verify_arg_class_kind(const zend_arg_info *cur_arg_info, ulong fetch_type, const char **class_name, zend_class_entry **pce TSRMLS_DC)
{
*pce = zend_fetch_class(cur_arg_info->class_name, cur_arg_info->class_name_len, (fetch_type | ZEND_FETCH_CLASS_AUTO | ZEND_FETCH_CLASS_NO_AUTOLOAD) TSRMLS_CC);
*class_name = (*pce) ? (*pce)->name: cur_arg_info->class_name;
if (*pce && (*pce)->ce_flags & ZEND_ACC_INTERFACE) {
return "implement interface ";
} else {
return "be an instance of ";
}
}
static inline int zend_verify_arg_error(const zend_function *zf, zend_uint arg_num, const zend_arg_info *cur_arg_info, const char *need_msg, const char *need_kind, const char *given_msg, char *given_kind TSRMLS_DC)
{
zend_execute_data *ptr = EG(current_execute_data)->prev_execute_data;
char *fname = zf->common.function_name;
char *fsep;
char *fclass;
if (zf->common.scope) {
fsep = "::";
fclass = zf->common.scope->name;
} else {
fsep = "";
fclass = "";
}
if (ptr && ptr->op_array) {
zend_error(E_RECOVERABLE_ERROR, "Argument %d passed to %s%s%s() must %s%s, %s%s given, called in %s on line %d and defined", arg_num, fclass, fsep, fname, need_msg, need_kind, given_msg, given_kind, ptr->op_array->filename, ptr->opline->lineno);
} else {
zend_error(E_RECOVERABLE_ERROR, "Argument %d passed to %s%s%s() must %s%s, %s%s given", arg_num, fclass, fsep, fname, need_msg, need_kind, given_msg, given_kind);
}
return 0;
}
static inline int zend_verify_arg_type(zend_function *zf, zend_uint arg_num, zval *arg, ulong fetch_type TSRMLS_DC)
{
zend_arg_info *cur_arg_info;
char *need_msg;
zend_class_entry *ce;
if (!zf->common.arg_info
|| arg_num>zf->common.num_args) {
return 1;
}
cur_arg_info = &zf->common.arg_info[arg_num-1];
if (cur_arg_info->class_name) {
const char *class_name;
if (!arg) {
need_msg = zend_verify_arg_class_kind(cur_arg_info, fetch_type, &class_name, &ce TSRMLS_CC);
return zend_verify_arg_error(zf, arg_num, cur_arg_info, need_msg, class_name, "none", "" TSRMLS_CC);
}
if (Z_TYPE_P(arg) == IS_OBJECT) {
need_msg = zend_verify_arg_class_kind(cur_arg_info, fetch_type, &class_name, &ce TSRMLS_CC);
if (!ce || !instanceof_function(Z_OBJCE_P(arg), ce TSRMLS_CC)) {
return zend_verify_arg_error(zf, arg_num, cur_arg_info, need_msg, class_name, "instance of ", Z_OBJCE_P(arg)->name TSRMLS_CC);
}
} else if (Z_TYPE_P(arg) != IS_NULL || !cur_arg_info->allow_null) {
need_msg = zend_verify_arg_class_kind(cur_arg_info, fetch_type, &class_name, &ce TSRMLS_CC);
return zend_verify_arg_error(zf, arg_num, cur_arg_info, need_msg, class_name, zend_zval_type_name(arg), "" TSRMLS_CC);
}
} else if (cur_arg_info->array_type_hint) {
if (!arg) {
return zend_verify_arg_error(zf, arg_num, cur_arg_info, "be an array", "", "none", "" TSRMLS_CC);
}
if (Z_TYPE_P(arg) != IS_ARRAY && (Z_TYPE_P(arg) != IS_NULL || !cur_arg_info->allow_null)) {
return zend_verify_arg_error(zf, arg_num, cur_arg_info, "be an array", "", zend_zval_type_name(arg), "" TSRMLS_CC);
}
}
return 1;
}
static inline void zend_assign_to_object(znode *result, zval **object_ptr, zval *property_name, znode *value_op, const temp_variable *Ts, int opcode TSRMLS_DC)
{
zval *object = *object_ptr;
zend_free_op free_value;
zval *value = get_zval_ptr(value_op, Ts, &free_value, BP_VAR_R);
zval **retval = &T(result->u.var).var.ptr;
if (Z_TYPE_P(object) != IS_OBJECT) {
if (object == EG(error_zval_ptr)) {
if (!RETURN_VALUE_UNUSED(result)) {
*retval = EG(uninitialized_zval_ptr);
PZVAL_LOCK(*retval);
}
FREE_OP(free_value);
return;
}
if (Z_TYPE_P(object) == IS_NULL ||
(Z_TYPE_P(object) == IS_BOOL && Z_LVAL_P(object) == 0) ||
(Z_TYPE_P(object) == IS_STRING && Z_STRLEN_P(object) == 0)) {
SEPARATE_ZVAL_IF_NOT_REF(object_ptr);
zval_dtor(*object_ptr);
object_init(*object_ptr);
object = *object_ptr;
zend_error(E_STRICT, "Creating default object from empty value");
} else {
zend_error(E_WARNING, "Attempt to assign property of non-object");
if (!RETURN_VALUE_UNUSED(result)) {
*retval = EG(uninitialized_zval_ptr);
PZVAL_LOCK(*retval);
}
FREE_OP(free_value);
return;
}
}
/* separate our value if necessary */
if (value_op->op_type == IS_TMP_VAR) {
zval *orig_value = value;
ALLOC_ZVAL(value);
*value = *orig_value;
Z_UNSET_ISREF_P(value);
Z_SET_REFCOUNT_P(value, 0);
} else if (value_op->op_type == IS_CONST) {
zval *orig_value = value;
ALLOC_ZVAL(value);
*value = *orig_value;
Z_UNSET_ISREF_P(value);
Z_SET_REFCOUNT_P(value, 0);
zval_copy_ctor(value);
}
Z_ADDREF_P(value);
if (opcode == ZEND_ASSIGN_OBJ) {
if (!Z_OBJ_HT_P(object)->write_property) {
zend_error(E_WARNING, "Attempt to assign property of non-object");
if (!RETURN_VALUE_UNUSED(result)) {
*retval = EG(uninitialized_zval_ptr);
PZVAL_LOCK(*retval);
}
if (value_op->op_type == IS_TMP_VAR) {
FREE_ZVAL(value);
} else if (value_op->op_type == IS_CONST) {
zval_ptr_dtor(&value);
}
FREE_OP(free_value);
return;
}
Z_OBJ_HT_P(object)->write_property(object, property_name, value TSRMLS_CC);
} else {
/* Note: property_name in this case is really the array index! */
if (!Z_OBJ_HT_P(object)->write_dimension) {
zend_error_noreturn(E_ERROR, "Cannot use object as array");
}
Z_OBJ_HT_P(object)->write_dimension(object, property_name, value TSRMLS_CC);
}
if (!RETURN_VALUE_UNUSED(result) && !EG(exception)) {
AI_SET_PTR(T(result->u.var).var, value);
PZVAL_LOCK(value);
}
zval_ptr_dtor(&value);
FREE_OP_IF_VAR(free_value);
}
static inline int zend_assign_to_string_offset(const temp_variable *T, const zval *value, int value_type TSRMLS_DC)
{
if (Z_TYPE_P(T->str_offset.str) == IS_STRING) {
if (((int)T->str_offset.offset < 0)) {
zend_error(E_WARNING, "Illegal string offset: %d", T->str_offset.offset);
return 0;
}
if (T->str_offset.offset >= Z_STRLEN_P(T->str_offset.str)) {
Z_STRVAL_P(T->str_offset.str) = (char *) erealloc(Z_STRVAL_P(T->str_offset.str), T->str_offset.offset+1+1);
memset(Z_STRVAL_P(T->str_offset.str) + Z_STRLEN_P(T->str_offset.str),
' ',
T->str_offset.offset - Z_STRLEN_P(T->str_offset.str));
Z_STRVAL_P(T->str_offset.str)[T->str_offset.offset+1] = 0;
Z_STRLEN_P(T->str_offset.str) = T->str_offset.offset+1;
}
if (Z_TYPE_P(value) != IS_STRING) {
zval tmp = *value;
if (value_type != IS_TMP_VAR) {
zval_copy_ctor(&tmp);
}
convert_to_string(&tmp);
Z_STRVAL_P(T->str_offset.str)[T->str_offset.offset] = Z_STRVAL(tmp)[0];
STR_FREE(Z_STRVAL(tmp));
} else {
Z_STRVAL_P(T->str_offset.str)[T->str_offset.offset] = Z_STRVAL_P(value)[0];
if (value_type == IS_TMP_VAR) {
/* we can safely free final_value here
* because separation is done only
* in case value_type == IS_VAR */
STR_FREE(Z_STRVAL_P(value));
}
}
/*
* the value of an assignment to a string offset is undefined
T(result->u.var).var = &T->str_offset.str;
*/
}
return 1;
}
static inline zval* zend_assign_to_variable(zval **variable_ptr_ptr, zval *value, int is_tmp_var TSRMLS_DC)
{
zval *variable_ptr = *variable_ptr_ptr;
zval garbage;
if (variable_ptr == EG(error_zval_ptr)) {
if (is_tmp_var) {
zval_dtor(value);
}
return EG(uninitialized_zval_ptr);
}
if (Z_TYPE_P(variable_ptr) == IS_OBJECT && Z_OBJ_HANDLER_P(variable_ptr, set)) {
Z_OBJ_HANDLER_P(variable_ptr, set)(variable_ptr_ptr, value TSRMLS_CC);
return variable_ptr;
}
if (PZVAL_IS_REF(variable_ptr)) {
if (variable_ptr!=value) {
zend_uint refcount = Z_REFCOUNT_P(variable_ptr);
garbage = *variable_ptr;
*variable_ptr = *value;
Z_SET_REFCOUNT_P(variable_ptr, refcount);
Z_SET_ISREF_P(variable_ptr);
if (!is_tmp_var) {
zendi_zval_copy_ctor(*variable_ptr);
}
zendi_zval_dtor(garbage);
return variable_ptr;
}
} else {
if (Z_DELREF_P(variable_ptr)==0) {
if (!is_tmp_var) {
if (variable_ptr==value) {
Z_ADDREF_P(variable_ptr);
} else if (PZVAL_IS_REF(value)) {
garbage = *variable_ptr;
*variable_ptr = *value;
INIT_PZVAL(variable_ptr);
zval_copy_ctor(variable_ptr);
zendi_zval_dtor(garbage);
return variable_ptr;
} else {
Z_ADDREF_P(value);
*variable_ptr_ptr = value;
if (variable_ptr != &EG(uninitialized_zval)) {
GC_REMOVE_ZVAL_FROM_BUFFER(variable_ptr);
zval_dtor(variable_ptr);
efree(variable_ptr);
}
return value;
}
} else {
garbage = *variable_ptr;
*variable_ptr = *value;
INIT_PZVAL(variable_ptr);
zendi_zval_dtor(garbage);
return variable_ptr;
}
} else { /* we need to split */
if (!is_tmp_var) {
if (PZVAL_IS_REF(value) && Z_REFCOUNT_P(value) > 0) {
ALLOC_ZVAL(variable_ptr);
*variable_ptr_ptr = variable_ptr;
*variable_ptr = *value;
zval_copy_ctor(variable_ptr);
Z_SET_REFCOUNT_P(variable_ptr, 1);
} else {
*variable_ptr_ptr = value;
Z_ADDREF_P(value);
}
} else {
ALLOC_ZVAL(*variable_ptr_ptr);
Z_SET_REFCOUNT_P(value, 1);
**variable_ptr_ptr = *value;
}
}
Z_UNSET_ISREF_PP(variable_ptr_ptr);
}
return *variable_ptr_ptr;
}
/* Utility Functions for Extensions */
static void zend_extension_statement_handler(const zend_extension *extension, zend_op_array *op_array TSRMLS_DC)
{
if (extension->statement_handler) {
extension->statement_handler(op_array);
}
}
static void zend_extension_fcall_begin_handler(const zend_extension *extension, zend_op_array *op_array TSRMLS_DC)
{
if (extension->fcall_begin_handler) {
extension->fcall_begin_handler(op_array);
}
}
static void zend_extension_fcall_end_handler(const zend_extension *extension, zend_op_array *op_array TSRMLS_DC)
{
if (extension->fcall_end_handler) {
extension->fcall_end_handler(op_array);
}
}
static inline HashTable *zend_get_target_symbol_table(const zend_op *opline, const temp_variable *Ts, int type, const zval *variable TSRMLS_DC)
{
switch (opline->op2.u.EA.type) {
case ZEND_FETCH_LOCAL:
if (!EG(active_symbol_table)) {
zend_rebuild_symbol_table(TSRMLS_C);
}
return EG(active_symbol_table);
break;
case ZEND_FETCH_GLOBAL:
case ZEND_FETCH_GLOBAL_LOCK:
return &EG(symbol_table);
break;
case ZEND_FETCH_STATIC:
if (!EG(active_op_array)->static_variables) {
ALLOC_HASHTABLE(EG(active_op_array)->static_variables);
zend_hash_init(EG(active_op_array)->static_variables, 2, NULL, ZVAL_PTR_DTOR, 0);
}
return EG(active_op_array)->static_variables;
break;
EMPTY_SWITCH_DEFAULT_CASE()
}
return NULL;
}
static inline zval **zend_fetch_dimension_address_inner(HashTable *ht, const zval *dim, int type TSRMLS_DC)
{
zval **retval;
char *offset_key;
int offset_key_length;
long index;
switch (dim->type) {
case IS_NULL:
offset_key = "";
offset_key_length = 0;
goto fetch_string_dim;
case IS_STRING:
offset_key = dim->value.str.val;
offset_key_length = dim->value.str.len;
fetch_string_dim:
if (zend_symtable_find(ht, offset_key, offset_key_length+1, (void **) &retval) == FAILURE) {
switch (type) {
case BP_VAR_R:
zend_error(E_NOTICE, "Undefined index: %s", offset_key);
/* break missing intentionally */
case BP_VAR_UNSET:
case BP_VAR_IS:
retval = &EG(uninitialized_zval_ptr);
break;
case BP_VAR_RW:
zend_error(E_NOTICE,"Undefined index: %s", offset_key);
/* break missing intentionally */
case BP_VAR_W: {
zval *new_zval = &EG(uninitialized_zval);
Z_ADDREF_P(new_zval);
zend_symtable_update(ht, offset_key, offset_key_length+1, &new_zval, sizeof(zval *), (void **) &retval);
}
break;
}
}
break;
case IS_DOUBLE:
index = zend_dval_to_lval(Z_DVAL_P(dim));
goto num_index;
case IS_RESOURCE:
zend_error(E_STRICT, "Resource ID#%ld used as offset, casting to integer (%ld)", Z_LVAL_P(dim), Z_LVAL_P(dim));
/* Fall Through */
case IS_BOOL:
case IS_LONG:
index = Z_LVAL_P(dim);
num_index:
if (zend_hash_index_find(ht, index, (void **) &retval) == FAILURE) {
switch (type) {
case BP_VAR_R:
zend_error(E_NOTICE,"Undefined offset: %ld", index);
/* break missing intentionally */
case BP_VAR_UNSET:
case BP_VAR_IS:
retval = &EG(uninitialized_zval_ptr);
break;
case BP_VAR_RW:
zend_error(E_NOTICE,"Undefined offset: %ld", index);
/* break missing intentionally */
case BP_VAR_W: {
zval *new_zval = &EG(uninitialized_zval);
Z_ADDREF_P(new_zval);
zend_hash_index_update(ht, index, &new_zval, sizeof(zval *), (void **) &retval);
}
break;
}
}
break;
default:
zend_error(E_WARNING, "Illegal offset type");
return (type == BP_VAR_W || type == BP_VAR_RW) ?
&EG(error_zval_ptr) : &EG(uninitialized_zval_ptr);
}
return retval;
}
static void zend_fetch_dimension_address(temp_variable *result, zval **container_ptr, zval *dim, int dim_is_tmp_var, int type TSRMLS_DC)
{
zval *container = *container_ptr;
zval **retval;
switch (Z_TYPE_P(container)) {
case IS_ARRAY:
if (type != BP_VAR_UNSET && Z_REFCOUNT_P(container)>1 && !PZVAL_IS_REF(container)) {
SEPARATE_ZVAL(container_ptr);
container = *container_ptr;
}
fetch_from_array:
if (dim == NULL) {
zval *new_zval = &EG(uninitialized_zval);
Z_ADDREF_P(new_zval);
if (zend_hash_next_index_insert(Z_ARRVAL_P(container), &new_zval, sizeof(zval *), (void **) &retval) == FAILURE) {
zend_error(E_WARNING, "Cannot add element to the array as the next element is already occupied");
retval = &EG(error_zval_ptr);
Z_DELREF_P(new_zval);
}
} else {
retval = zend_fetch_dimension_address_inner(Z_ARRVAL_P(container), dim, type TSRMLS_CC);
}
result->var.ptr_ptr = retval;
PZVAL_LOCK(*retval);
return;
break;
case IS_NULL:
if (container == EG(error_zval_ptr)) {
result->var.ptr_ptr = &EG(error_zval_ptr);
PZVAL_LOCK(EG(error_zval_ptr));
} else if (type != BP_VAR_UNSET) {
convert_to_array:
if (!PZVAL_IS_REF(container)) {
SEPARATE_ZVAL(container_ptr);
container = *container_ptr;
}
zval_dtor(container);
array_init(container);
goto fetch_from_array;
} else {
/* for read-mode only */
result->var.ptr_ptr = &EG(uninitialized_zval_ptr);
PZVAL_LOCK(EG(uninitialized_zval_ptr));
}
return;
break;
case IS_STRING: {
zval tmp;
if (type != BP_VAR_UNSET && Z_STRLEN_P(container)==0) {
goto convert_to_array;
}
if (dim == NULL) {
zend_error_noreturn(E_ERROR, "[] operator not supported for strings");
}
if (Z_TYPE_P(dim) != IS_LONG) {
switch(Z_TYPE_P(dim)) {
/* case IS_LONG: */
case IS_STRING:
case IS_DOUBLE:
case IS_NULL:
case IS_BOOL:
/* do nothing */
break;
default:
zend_error(E_WARNING, "Illegal offset type");
break;
}
tmp = *dim;
zval_copy_ctor(&tmp);
convert_to_long(&tmp);
dim = &tmp;
}
if (type != BP_VAR_UNSET) {
SEPARATE_ZVAL_IF_NOT_REF(container_ptr);
}
container = *container_ptr;
result->str_offset.str = container;
PZVAL_LOCK(container);
result->str_offset.offset = Z_LVAL_P(dim);
result->var.ptr_ptr = NULL;
result->var.ptr = NULL;
return;
}
break;
case IS_OBJECT:
if (!Z_OBJ_HT_P(container)->read_dimension) {
zend_error_noreturn(E_ERROR, "Cannot use object as array");
} else {
zval *overloaded_result;
if (dim_is_tmp_var) {
zval *orig = dim;
MAKE_REAL_ZVAL_PTR(dim);
ZVAL_NULL(orig);
}
overloaded_result = Z_OBJ_HT_P(container)->read_dimension(container, dim, type TSRMLS_CC);
if (overloaded_result) {
if (!Z_ISREF_P(overloaded_result)) {
if (Z_REFCOUNT_P(overloaded_result) > 0) {
zval *tmp = overloaded_result;
ALLOC_ZVAL(overloaded_result);
*overloaded_result = *tmp;
zval_copy_ctor(overloaded_result);
Z_UNSET_ISREF_P(overloaded_result);
Z_SET_REFCOUNT_P(overloaded_result, 0);
}
if (Z_TYPE_P(overloaded_result) != IS_OBJECT) {
zend_class_entry *ce = Z_OBJCE_P(container);
zend_error(E_NOTICE, "Indirect modification of overloaded element of %s has no effect", ce->name);
}
}
retval = &overloaded_result;
} else {
retval = &EG(error_zval_ptr);
}
AI_SET_PTR(result->var, *retval);
PZVAL_LOCK(*retval);
if (dim_is_tmp_var) {
zval_ptr_dtor(&dim);
}
}
return;
break;