1: /*
2: +----------------------------------------------------------------------+
3: | Zend Engine |
4: +----------------------------------------------------------------------+
5: | Copyright (c) 1998-2012 Zend Technologies Ltd. (http://www.zend.com) |
6: +----------------------------------------------------------------------+
7: | This source file is subject to version 2.00 of the Zend license, |
8: | that is bundled with this package in the file LICENSE, and is |
9: | available through the world-wide-web at the following url: |
10: | http://www.zend.com/license/2_00.txt. |
11: | If you did not receive a copy of the Zend license and are unable to |
12: | obtain it through the world-wide-web, please send a note to |
13: | license@zend.com so we can mail you a copy immediately. |
14: +----------------------------------------------------------------------+
15: | Authors: Andi Gutmans <andi@zend.com> |
16: | Zeev Suraski <zeev@zend.com> |
17: +----------------------------------------------------------------------+
18: */
19:
20: /* $Id: zend_execute.c,v 1.1.1.1 2012/02/21 23:47:52 misho Exp $ */
21:
22: #define ZEND_INTENSIVE_DEBUGGING 0
23:
24: #include <stdio.h>
25: #include <signal.h>
26:
27: #include "zend.h"
28: #include "zend_compile.h"
29: #include "zend_execute.h"
30: #include "zend_API.h"
31: #include "zend_ptr_stack.h"
32: #include "zend_constants.h"
33: #include "zend_extensions.h"
34: #include "zend_ini.h"
35: #include "zend_exceptions.h"
36: #include "zend_interfaces.h"
37: #include "zend_closures.h"
38: #include "zend_vm.h"
39:
40: /* Virtual current working directory support */
41: #include "tsrm_virtual_cwd.h"
42:
43: #define _CONST_CODE 0
44: #define _TMP_CODE 1
45: #define _VAR_CODE 2
46: #define _UNUSED_CODE 3
47: #define _CV_CODE 4
48:
49: typedef int (*incdec_t)(zval *);
50:
51: #define get_zval_ptr(node, Ts, should_free, type) _get_zval_ptr(node, Ts, should_free, type TSRMLS_CC)
52: #define get_zval_ptr_ptr(node, Ts, should_free, type) _get_zval_ptr_ptr(node, Ts, should_free, type TSRMLS_CC)
53: #define get_obj_zval_ptr(node, Ts, should_free, type) _get_obj_zval_ptr(node, Ts, should_free, type TSRMLS_CC)
54: #define get_obj_zval_ptr_ptr(node, Ts, should_free, type) _get_obj_zval_ptr_ptr(node, Ts, should_free, type TSRMLS_CC)
55:
56: /* Prototypes */
57: static void zend_extension_statement_handler(const zend_extension *extension, zend_op_array *op_array TSRMLS_DC);
58: static void zend_extension_fcall_begin_handler(const zend_extension *extension, zend_op_array *op_array TSRMLS_DC);
59: static void zend_extension_fcall_end_handler(const zend_extension *extension, zend_op_array *op_array TSRMLS_DC);
60:
61: #define RETURN_VALUE_USED(opline) (!((opline)->result.u.EA.type & EXT_TYPE_UNUSED))
62:
63: #define EX_T(offset) (*(temp_variable *)((char *) EX(Ts) + offset))
64: #define T(offset) (*(temp_variable *)((char *) Ts + offset))
65:
66: #define TEMP_VAR_STACK_LIMIT 2000
67:
68: static zend_always_inline void zend_pzval_unlock_func(zval *z, zend_free_op *should_free, int unref TSRMLS_DC)
69: {
70: if (!Z_DELREF_P(z)) {
71: Z_SET_REFCOUNT_P(z, 1);
72: Z_UNSET_ISREF_P(z);
73: should_free->var = z;
74: /* should_free->is_var = 1; */
75: } else {
76: should_free->var = 0;
77: if (unref && Z_ISREF_P(z) && Z_REFCOUNT_P(z) == 1) {
78: Z_UNSET_ISREF_P(z);
79: }
80: GC_ZVAL_CHECK_POSSIBLE_ROOT(z);
81: }
82: }
83:
84: static zend_always_inline void zend_pzval_unlock_free_func(zval *z TSRMLS_DC)
85: {
86: if (!Z_DELREF_P(z)) {
87: if (z != &EG(uninitialized_zval)) {
88: GC_REMOVE_ZVAL_FROM_BUFFER(z);
89: zval_dtor(z);
90: efree(z);
91: }
92: }
93: }
94:
95: #define PZVAL_UNLOCK(z, f) zend_pzval_unlock_func(z, f, 1 TSRMLS_CC)
96: #define PZVAL_UNLOCK_EX(z, f, u) zend_pzval_unlock_func(z, f, u TSRMLS_CC)
97: #define PZVAL_UNLOCK_FREE(z) zend_pzval_unlock_free_func(z TSRMLS_CC)
98: #define PZVAL_LOCK(z) Z_ADDREF_P((z))
99: #define RETURN_VALUE_UNUSED(pzn) (((pzn)->u.EA.type & EXT_TYPE_UNUSED))
100: #define SELECTIVE_PZVAL_LOCK(pzv, pzn) if (!RETURN_VALUE_UNUSED(pzn)) { PZVAL_LOCK(pzv); }
101:
102: #define AI_USE_PTR(ai) \
103: if ((ai).ptr_ptr) { \
104: (ai).ptr = *((ai).ptr_ptr); \
105: (ai).ptr_ptr = &((ai).ptr); \
106: } else { \
107: (ai).ptr = NULL; \
108: }
109:
110: #define AI_SET_PTR(ai, val) \
111: (ai).ptr = (val); \
112: (ai).ptr_ptr = &((ai).ptr);
113:
114: #define FREE_OP(should_free) \
115: if (should_free.var) { \
116: if ((zend_uintptr_t)should_free.var & 1L) { \
117: zval_dtor((zval*)((zend_uintptr_t)should_free.var & ~1L)); \
118: } else { \
119: zval_ptr_dtor(&should_free.var); \
120: } \
121: }
122:
123: #define FREE_OP_IF_VAR(should_free) \
124: if (should_free.var != NULL && (((zend_uintptr_t)should_free.var & 1L) == 0)) { \
125: zval_ptr_dtor(&should_free.var); \
126: }
127:
128: #define FREE_OP_VAR_PTR(should_free) \
129: if (should_free.var) { \
130: zval_ptr_dtor(&should_free.var); \
131: }
132:
133: #define TMP_FREE(z) (zval*)(((zend_uintptr_t)(z)) | 1L)
134:
135: #define IS_TMP_FREE(should_free) ((zend_uintptr_t)should_free.var & 1L)
136:
137: #define INIT_PZVAL_COPY(z,v) \
138: (z)->value = (v)->value; \
139: Z_TYPE_P(z) = Z_TYPE_P(v); \
140: Z_SET_REFCOUNT_P(z, 1); \
141: Z_UNSET_ISREF_P(z);
142:
143: #define MAKE_REAL_ZVAL_PTR(val) \
144: do { \
145: zval *_tmp; \
146: ALLOC_ZVAL(_tmp); \
147: _tmp->value = (val)->value; \
148: Z_TYPE_P(_tmp) = Z_TYPE_P(val); \
149: Z_SET_REFCOUNT_P(_tmp, 1); \
150: Z_UNSET_ISREF_P(_tmp); \
151: val = _tmp; \
152: } while (0)
153:
154: /* End of zend_execute_locks.h */
155:
156: #define CV_OF(i) (EG(current_execute_data)->CVs[i])
157: #define CV_DEF_OF(i) (EG(active_op_array)->vars[i])
158:
159: #define CTOR_CALL_BIT 0x1
160: #define CTOR_USED_BIT 0x2
161:
162: #define IS_CTOR_CALL(ce) (((zend_uintptr_t)(ce)) & CTOR_CALL_BIT)
163: #define IS_CTOR_USED(ce) (((zend_uintptr_t)(ce)) & CTOR_USED_BIT)
164:
165: #define ENCODE_CTOR(ce, used) \
166: ((zend_class_entry*)(((zend_uintptr_t)(ce)) | CTOR_CALL_BIT | ((used) ? CTOR_USED_BIT : 0)))
167: #define DECODE_CTOR(ce) \
168: ((zend_class_entry*)(((zend_uintptr_t)(ce)) & ~(CTOR_CALL_BIT|CTOR_USED_BIT)))
169:
170: ZEND_API zval** zend_get_compiled_variable_value(const zend_execute_data *execute_data_ptr, zend_uint var)
171: {
172: return execute_data_ptr->CVs[var];
173: }
174:
175: static zend_always_inline zval *_get_zval_ptr_tmp(const znode *node, const temp_variable *Ts, zend_free_op *should_free TSRMLS_DC)
176: {
177: return should_free->var = &T(node->u.var).tmp_var;
178: }
179:
180: static zval *_get_zval_ptr_var_string_offset(const znode *node, const temp_variable *Ts, zend_free_op *should_free TSRMLS_DC)
181: {
182: temp_variable *T = &T(node->u.var);
183: zval *str = T->str_offset.str;
184: zval *ptr;
185:
186: /* string offset */
187: ALLOC_ZVAL(ptr);
188: T->str_offset.ptr = ptr;
189: should_free->var = ptr;
190:
191: if (T->str_offset.str->type != IS_STRING
192: || ((int)T->str_offset.offset < 0)
193: || (T->str_offset.str->value.str.len <= (int)T->str_offset.offset)) {
194: ptr->value.str.val = STR_EMPTY_ALLOC();
195: ptr->value.str.len = 0;
196: } else {
197: ptr->value.str.val = estrndup(str->value.str.val + T->str_offset.offset, 1);
198: ptr->value.str.len = 1;
199: }
200: PZVAL_UNLOCK_FREE(str);
201: Z_SET_REFCOUNT_P(ptr, 1);
202: Z_SET_ISREF_P(ptr);
203: ptr->type = IS_STRING;
204: return ptr;
205: }
206:
207: static zend_always_inline zval *_get_zval_ptr_var(const znode *node, const temp_variable *Ts, zend_free_op *should_free TSRMLS_DC)
208: {
209: zval *ptr = T(node->u.var).var.ptr;
210: if (EXPECTED(ptr != NULL)) {
211: PZVAL_UNLOCK(ptr, should_free);
212: return ptr;
213: } else {
214: return _get_zval_ptr_var_string_offset(node, Ts, should_free TSRMLS_CC);
215: }
216: }
217:
218: static zval **_get_zval_cv_lookup(zval ***ptr, zend_uint var, int type TSRMLS_DC)
219: {
220: zend_compiled_variable *cv = &CV_DEF_OF(var);
221:
222: if (!EG(active_symbol_table) ||
223: zend_hash_quick_find(EG(active_symbol_table), cv->name, cv->name_len+1, cv->hash_value, (void **)ptr)==FAILURE) {
224: switch (type) {
225: case BP_VAR_R:
226: case BP_VAR_UNSET:
227: zend_error(E_NOTICE, "Undefined variable: %s", cv->name);
228: /* break missing intentionally */
229: case BP_VAR_IS:
230: return &EG(uninitialized_zval_ptr);
231: break;
232: case BP_VAR_RW:
233: zend_error(E_NOTICE, "Undefined variable: %s", cv->name);
234: /* break missing intentionally */
235: case BP_VAR_W:
236: Z_ADDREF(EG(uninitialized_zval));
237: if (!EG(active_symbol_table)) {
238: *ptr = (zval**)EG(current_execute_data)->CVs + (EG(active_op_array)->last_var + var);
239: **ptr = &EG(uninitialized_zval);
240: } else {
241: 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);
242: }
243: break;
244: }
245: }
246: return *ptr;
247: }
248:
249: static zend_always_inline zval *_get_zval_ptr_cv(const znode *node, const temp_variable *Ts, int type TSRMLS_DC)
250: {
251: zval ***ptr = &CV_OF(node->u.var);
252:
253: if (UNEXPECTED(*ptr == NULL)) {
254: return *_get_zval_cv_lookup(ptr, node->u.var, type TSRMLS_CC);
255: }
256: return **ptr;
257: }
258:
259: static inline zval *_get_zval_ptr(znode *node, const temp_variable *Ts, zend_free_op *should_free, int type TSRMLS_DC)
260: {
261: /* should_free->is_var = 0; */
262: switch (node->op_type) {
263: case IS_CONST:
264: should_free->var = 0;
265: return &node->u.constant;
266: break;
267: case IS_TMP_VAR:
268: should_free->var = TMP_FREE(&T(node->u.var).tmp_var);
269: return &T(node->u.var).tmp_var;
270: break;
271: case IS_VAR:
272: return _get_zval_ptr_var(node, Ts, should_free TSRMLS_CC);
273: break;
274: case IS_UNUSED:
275: should_free->var = 0;
276: return NULL;
277: break;
278: case IS_CV:
279: should_free->var = 0;
280: return _get_zval_ptr_cv(node, Ts, type TSRMLS_CC);
281: break;
282: EMPTY_SWITCH_DEFAULT_CASE()
283: }
284: return NULL;
285: }
286:
287: static zend_always_inline zval **_get_zval_ptr_ptr_var(const znode *node, const temp_variable *Ts, zend_free_op *should_free TSRMLS_DC)
288: {
289: zval** ptr_ptr = T(node->u.var).var.ptr_ptr;
290:
291: if (EXPECTED(ptr_ptr != NULL)) {
292: PZVAL_UNLOCK(*ptr_ptr, should_free);
293: } else {
294: /* string offset */
295: PZVAL_UNLOCK(T(node->u.var).str_offset.str, should_free);
296: }
297: return ptr_ptr;
298: }
299:
300: static zend_always_inline zval **_get_zval_ptr_ptr_cv(const znode *node, const temp_variable *Ts, int type TSRMLS_DC)
301: {
302: zval ***ptr = &CV_OF(node->u.var);
303:
304: if (UNEXPECTED(*ptr == NULL)) {
305: return _get_zval_cv_lookup(ptr, node->u.var, type TSRMLS_CC);
306: }
307: return *ptr;
308: }
309:
310: static inline zval **_get_zval_ptr_ptr(const znode *node, const temp_variable *Ts, zend_free_op *should_free, int type TSRMLS_DC)
311: {
312: if (node->op_type == IS_CV) {
313: should_free->var = 0;
314: return _get_zval_ptr_ptr_cv(node, Ts, type TSRMLS_CC);
315: } else if (node->op_type == IS_VAR) {
316: return _get_zval_ptr_ptr_var(node, Ts, should_free TSRMLS_CC);
317: } else {
318: should_free->var = 0;
319: return NULL;
320: }
321: }
322:
323: static zend_always_inline zval *_get_obj_zval_ptr_unused(TSRMLS_D)
324: {
325: if (EXPECTED(EG(This) != NULL)) {
326: return EG(This);
327: } else {
328: zend_error_noreturn(E_ERROR, "Using $this when not in object context");
329: return NULL;
330: }
331: }
332:
333: static inline zval **_get_obj_zval_ptr_ptr(const znode *op, const temp_variable *Ts, zend_free_op *should_free, int type TSRMLS_DC)
334: {
335: if (op->op_type == IS_UNUSED) {
336: if (EXPECTED(EG(This) != NULL)) {
337: /* this should actually never be modified, _ptr_ptr is modified only when
338: the object is empty */
339: should_free->var = 0;
340: return &EG(This);
341: } else {
342: zend_error_noreturn(E_ERROR, "Using $this when not in object context");
343: }
344: }
345: return get_zval_ptr_ptr(op, Ts, should_free, type);
346: }
347:
348: static zend_always_inline zval **_get_obj_zval_ptr_ptr_unused(TSRMLS_D)
349: {
350: if (EXPECTED(EG(This) != NULL)) {
351: return &EG(This);
352: } else {
353: zend_error_noreturn(E_ERROR, "Using $this when not in object context");
354: return NULL;
355: }
356: }
357:
358: static inline zval *_get_obj_zval_ptr(znode *op, const temp_variable *Ts, zend_free_op *should_free, int type TSRMLS_DC)
359: {
360: if (op->op_type == IS_UNUSED) {
361: if (EXPECTED(EG(This) != NULL)) {
362: should_free->var = 0;
363: return EG(This);
364: } else {
365: zend_error_noreturn(E_ERROR, "Using $this when not in object context");
366: }
367: }
368: return get_zval_ptr(op, Ts, should_free, type);
369: }
370:
371: static inline void zend_switch_free(temp_variable *T, int extended_value TSRMLS_DC)
372: {
373: if (T->var.ptr) {
374: if (extended_value & ZEND_FE_RESET_VARIABLE) { /* foreach() free */
375: Z_DELREF_P(T->var.ptr);
376: }
377: zval_ptr_dtor(&T->var.ptr);
378: } else if (!T->var.ptr_ptr) {
379: /* perform the equivalent of equivalent of a
380: * quick & silent get_zval_ptr, and FREE_OP
381: */
382: PZVAL_UNLOCK_FREE(T->str_offset.str);
383: }
384: }
385:
386: static void zend_assign_to_variable_reference(zval **variable_ptr_ptr, zval **value_ptr_ptr TSRMLS_DC)
387: {
388: zval *variable_ptr = *variable_ptr_ptr;
389: zval *value_ptr = *value_ptr_ptr;
390:
391: if (variable_ptr == EG(error_zval_ptr) || value_ptr==EG(error_zval_ptr)) {
392: variable_ptr_ptr = &EG(uninitialized_zval_ptr);
393: } else if (variable_ptr != value_ptr) {
394: if (!PZVAL_IS_REF(value_ptr)) {
395: /* break it away */
396: Z_DELREF_P(value_ptr);
397: if (Z_REFCOUNT_P(value_ptr)>0) {
398: ALLOC_ZVAL(*value_ptr_ptr);
399: **value_ptr_ptr = *value_ptr;
400: value_ptr = *value_ptr_ptr;
401: zendi_zval_copy_ctor(*value_ptr);
402: }
403: Z_SET_REFCOUNT_P(value_ptr, 1);
404: Z_SET_ISREF_P(value_ptr);
405: }
406:
407: *variable_ptr_ptr = value_ptr;
408: Z_ADDREF_P(value_ptr);
409:
410: zval_ptr_dtor(&variable_ptr);
411: } else if (!Z_ISREF_P(variable_ptr)) {
412: if (variable_ptr_ptr == value_ptr_ptr) {
413: SEPARATE_ZVAL(variable_ptr_ptr);
414: } else if (variable_ptr==EG(uninitialized_zval_ptr)
415: || Z_REFCOUNT_P(variable_ptr)>2) {
416: /* we need to separate */
417: Z_SET_REFCOUNT_P(variable_ptr, Z_REFCOUNT_P(variable_ptr) - 2);
418: ALLOC_ZVAL(*variable_ptr_ptr);
419: **variable_ptr_ptr = *variable_ptr;
420: zval_copy_ctor(*variable_ptr_ptr);
421: *value_ptr_ptr = *variable_ptr_ptr;
422: Z_SET_REFCOUNT_PP(variable_ptr_ptr, 2);
423: }
424: Z_SET_ISREF_PP(variable_ptr_ptr);
425: }
426: }
427:
428: /* this should modify object only if it's empty */
429: static inline void make_real_object(zval **object_ptr TSRMLS_DC)
430: {
431: if (Z_TYPE_PP(object_ptr) == IS_NULL
432: || (Z_TYPE_PP(object_ptr) == IS_BOOL && Z_LVAL_PP(object_ptr) == 0)
433: || (Z_TYPE_PP(object_ptr) == IS_STRING && Z_STRLEN_PP(object_ptr) == 0)
434: ) {
435: zend_error(E_STRICT, "Creating default object from empty value");
436:
437: SEPARATE_ZVAL_IF_NOT_REF(object_ptr);
438: zval_dtor(*object_ptr);
439: object_init(*object_ptr);
440: }
441: }
442:
443: 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)
444: {
445: *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);
446:
447: *class_name = (*pce) ? (*pce)->name: cur_arg_info->class_name;
448: if (*pce && (*pce)->ce_flags & ZEND_ACC_INTERFACE) {
449: return "implement interface ";
450: } else {
451: return "be an instance of ";
452: }
453: }
454:
455: 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)
456: {
457: zend_execute_data *ptr = EG(current_execute_data)->prev_execute_data;
458: char *fname = zf->common.function_name;
459: char *fsep;
460: char *fclass;
461:
462: if (zf->common.scope) {
463: fsep = "::";
464: fclass = zf->common.scope->name;
465: } else {
466: fsep = "";
467: fclass = "";
468: }
469:
470: if (ptr && ptr->op_array) {
471: 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);
472: } else {
473: 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);
474: }
475: return 0;
476: }
477:
478: static inline int zend_verify_arg_type(zend_function *zf, zend_uint arg_num, zval *arg, ulong fetch_type TSRMLS_DC)
479: {
480: zend_arg_info *cur_arg_info;
481: char *need_msg;
482: zend_class_entry *ce;
483:
484: if (!zf->common.arg_info
485: || arg_num>zf->common.num_args) {
486: return 1;
487: }
488:
489: cur_arg_info = &zf->common.arg_info[arg_num-1];
490:
491: if (cur_arg_info->class_name) {
492: const char *class_name;
493:
494: if (!arg) {
495: need_msg = zend_verify_arg_class_kind(cur_arg_info, fetch_type, &class_name, &ce TSRMLS_CC);
496: return zend_verify_arg_error(zf, arg_num, cur_arg_info, need_msg, class_name, "none", "" TSRMLS_CC);
497: }
498: if (Z_TYPE_P(arg) == IS_OBJECT) {
499: need_msg = zend_verify_arg_class_kind(cur_arg_info, fetch_type, &class_name, &ce TSRMLS_CC);
500: if (!ce || !instanceof_function(Z_OBJCE_P(arg), ce TSRMLS_CC)) {
501: return zend_verify_arg_error(zf, arg_num, cur_arg_info, need_msg, class_name, "instance of ", Z_OBJCE_P(arg)->name TSRMLS_CC);
502: }
503: } else if (Z_TYPE_P(arg) != IS_NULL || !cur_arg_info->allow_null) {
504: need_msg = zend_verify_arg_class_kind(cur_arg_info, fetch_type, &class_name, &ce TSRMLS_CC);
505: return zend_verify_arg_error(zf, arg_num, cur_arg_info, need_msg, class_name, zend_zval_type_name(arg), "" TSRMLS_CC);
506: }
507: } else if (cur_arg_info->array_type_hint) {
508: if (!arg) {
509: return zend_verify_arg_error(zf, arg_num, cur_arg_info, "be an array", "", "none", "" TSRMLS_CC);
510: }
511: if (Z_TYPE_P(arg) != IS_ARRAY && (Z_TYPE_P(arg) != IS_NULL || !cur_arg_info->allow_null)) {
512: return zend_verify_arg_error(zf, arg_num, cur_arg_info, "be an array", "", zend_zval_type_name(arg), "" TSRMLS_CC);
513: }
514: }
515: return 1;
516: }
517:
518: 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)
519:
520: {
521: zval *object = *object_ptr;
522: zend_free_op free_value;
523: zval *value = get_zval_ptr(value_op, Ts, &free_value, BP_VAR_R);
524: zval **retval = &T(result->u.var).var.ptr;
525:
526: if (Z_TYPE_P(object) != IS_OBJECT) {
527: if (object == EG(error_zval_ptr)) {
528: if (!RETURN_VALUE_UNUSED(result)) {
529: *retval = EG(uninitialized_zval_ptr);
530: PZVAL_LOCK(*retval);
531: }
532: FREE_OP(free_value);
533: return;
534: }
535: if (Z_TYPE_P(object) == IS_NULL ||
536: (Z_TYPE_P(object) == IS_BOOL && Z_LVAL_P(object) == 0) ||
537: (Z_TYPE_P(object) == IS_STRING && Z_STRLEN_P(object) == 0)) {
538: SEPARATE_ZVAL_IF_NOT_REF(object_ptr);
539: object = *object_ptr;
540: Z_ADDREF_P(object);
541: zend_error(E_STRICT, "Creating default object from empty value");
542: if (Z_REFCOUNT_P(object) == 1) {
543: /* object was removed by error handler, nothing to assign to */
544: zval_ptr_dtor(&object);
545: if (retval) {
546: *retval = &EG(uninitialized_zval);
547: PZVAL_LOCK(*retval);
548: }
549: FREE_OP(free_value);
550: return;
551: }
552: Z_DELREF_P(object);
553: zval_dtor(object);
554: object_init(object);
555: } else {
556: zend_error(E_WARNING, "Attempt to assign property of non-object");
557: if (!RETURN_VALUE_UNUSED(result)) {
558: *retval = EG(uninitialized_zval_ptr);
559: PZVAL_LOCK(*retval);
560: }
561: FREE_OP(free_value);
562: return;
563: }
564: }
565:
566: /* separate our value if necessary */
567: if (value_op->op_type == IS_TMP_VAR) {
568: zval *orig_value = value;
569:
570: ALLOC_ZVAL(value);
571: *value = *orig_value;
572: Z_UNSET_ISREF_P(value);
573: Z_SET_REFCOUNT_P(value, 0);
574: } else if (value_op->op_type == IS_CONST) {
575: zval *orig_value = value;
576:
577: ALLOC_ZVAL(value);
578: *value = *orig_value;
579: Z_UNSET_ISREF_P(value);
580: Z_SET_REFCOUNT_P(value, 0);
581: zval_copy_ctor(value);
582: }
583:
584:
585: Z_ADDREF_P(value);
586: if (opcode == ZEND_ASSIGN_OBJ) {
587: if (!Z_OBJ_HT_P(object)->write_property) {
588: zend_error(E_WARNING, "Attempt to assign property of non-object");
589: if (!RETURN_VALUE_UNUSED(result)) {
590: *retval = EG(uninitialized_zval_ptr);
591: PZVAL_LOCK(*retval);
592: }
593: if (value_op->op_type == IS_TMP_VAR) {
594: FREE_ZVAL(value);
595: } else if (value_op->op_type == IS_CONST) {
596: zval_ptr_dtor(&value);
597: }
598: FREE_OP(free_value);
599: return;
600: }
601: Z_OBJ_HT_P(object)->write_property(object, property_name, value TSRMLS_CC);
602: } else {
603: /* Note: property_name in this case is really the array index! */
604: if (!Z_OBJ_HT_P(object)->write_dimension) {
605: zend_error_noreturn(E_ERROR, "Cannot use object as array");
606: }
607: Z_OBJ_HT_P(object)->write_dimension(object, property_name, value TSRMLS_CC);
608: }
609:
610: if (!RETURN_VALUE_UNUSED(result) && !EG(exception)) {
611: AI_SET_PTR(T(result->u.var).var, value);
612: PZVAL_LOCK(value);
613: }
614: zval_ptr_dtor(&value);
615: FREE_OP_IF_VAR(free_value);
616: }
617:
618: static inline int zend_assign_to_string_offset(const temp_variable *T, const zval *value, int value_type TSRMLS_DC)
619: {
620: if (Z_TYPE_P(T->str_offset.str) == IS_STRING) {
621:
622: if (((int)T->str_offset.offset < 0)) {
623: zend_error(E_WARNING, "Illegal string offset: %d", T->str_offset.offset);
624: return 0;
625: }
626:
627: if (T->str_offset.offset >= Z_STRLEN_P(T->str_offset.str)) {
628: Z_STRVAL_P(T->str_offset.str) = (char *) erealloc(Z_STRVAL_P(T->str_offset.str), T->str_offset.offset+1+1);
629: memset(Z_STRVAL_P(T->str_offset.str) + Z_STRLEN_P(T->str_offset.str),
630: ' ',
631: T->str_offset.offset - Z_STRLEN_P(T->str_offset.str));
632: Z_STRVAL_P(T->str_offset.str)[T->str_offset.offset+1] = 0;
633: Z_STRLEN_P(T->str_offset.str) = T->str_offset.offset+1;
634: }
635:
636: if (Z_TYPE_P(value) != IS_STRING) {
637: zval tmp = *value;
638:
639: if (value_type != IS_TMP_VAR) {
640: zval_copy_ctor(&tmp);
641: }
642: convert_to_string(&tmp);
643: Z_STRVAL_P(T->str_offset.str)[T->str_offset.offset] = Z_STRVAL(tmp)[0];
644: STR_FREE(Z_STRVAL(tmp));
645: } else {
646: Z_STRVAL_P(T->str_offset.str)[T->str_offset.offset] = Z_STRVAL_P(value)[0];
647: if (value_type == IS_TMP_VAR) {
648: /* we can safely free final_value here
649: * because separation is done only
650: * in case value_type == IS_VAR */
651: STR_FREE(Z_STRVAL_P(value));
652: }
653: }
654: /*
655: * the value of an assignment to a string offset is undefined
656: T(result->u.var).var = &T->str_offset.str;
657: */
658: }
659: return 1;
660: }
661:
662: static inline zval* zend_assign_to_variable(zval **variable_ptr_ptr, zval *value, int is_tmp_var TSRMLS_DC)
663: {
664: zval *variable_ptr = *variable_ptr_ptr;
665: zval garbage;
666:
667: if (variable_ptr == EG(error_zval_ptr)) {
668: if (is_tmp_var) {
669: zval_dtor(value);
670: }
671: return EG(uninitialized_zval_ptr);
672: }
673:
674: if (Z_TYPE_P(variable_ptr) == IS_OBJECT && Z_OBJ_HANDLER_P(variable_ptr, set)) {
675: Z_OBJ_HANDLER_P(variable_ptr, set)(variable_ptr_ptr, value TSRMLS_CC);
676: return variable_ptr;
677: }
678:
679: if (PZVAL_IS_REF(variable_ptr)) {
680: if (variable_ptr!=value) {
681: zend_uint refcount = Z_REFCOUNT_P(variable_ptr);
682:
683: garbage = *variable_ptr;
684: *variable_ptr = *value;
685: Z_SET_REFCOUNT_P(variable_ptr, refcount);
686: Z_SET_ISREF_P(variable_ptr);
687: if (!is_tmp_var) {
688: zendi_zval_copy_ctor(*variable_ptr);
689: }
690: zendi_zval_dtor(garbage);
691: return variable_ptr;
692: }
693: } else {
694: if (Z_DELREF_P(variable_ptr)==0) {
695: if (!is_tmp_var) {
696: if (variable_ptr==value) {
697: Z_ADDREF_P(variable_ptr);
698: } else if (PZVAL_IS_REF(value)) {
699: garbage = *variable_ptr;
700: *variable_ptr = *value;
701: INIT_PZVAL(variable_ptr);
702: zval_copy_ctor(variable_ptr);
703: zendi_zval_dtor(garbage);
704: return variable_ptr;
705: } else {
706: Z_ADDREF_P(value);
707: *variable_ptr_ptr = value;
708: if (variable_ptr != &EG(uninitialized_zval)) {
709: GC_REMOVE_ZVAL_FROM_BUFFER(variable_ptr);
710: zval_dtor(variable_ptr);
711: efree(variable_ptr);
712: }
713: return value;
714: }
715: } else {
716: garbage = *variable_ptr;
717: *variable_ptr = *value;
718: INIT_PZVAL(variable_ptr);
719: zendi_zval_dtor(garbage);
720: return variable_ptr;
721: }
722: } else { /* we need to split */
723: GC_ZVAL_CHECK_POSSIBLE_ROOT(*variable_ptr_ptr);
724: if (!is_tmp_var) {
725: if (PZVAL_IS_REF(value) && Z_REFCOUNT_P(value) > 0) {
726: ALLOC_ZVAL(variable_ptr);
727: *variable_ptr_ptr = variable_ptr;
728: *variable_ptr = *value;
729: Z_SET_REFCOUNT_P(variable_ptr, 1);
730: zval_copy_ctor(variable_ptr);
731: } else {
732: *variable_ptr_ptr = value;
733: Z_ADDREF_P(value);
734: }
735: } else {
736: ALLOC_ZVAL(*variable_ptr_ptr);
737: Z_SET_REFCOUNT_P(value, 1);
738: **variable_ptr_ptr = *value;
739: }
740: }
741: Z_UNSET_ISREF_PP(variable_ptr_ptr);
742: }
743:
744: return *variable_ptr_ptr;
745: }
746:
747:
748: /* Utility Functions for Extensions */
749: static void zend_extension_statement_handler(const zend_extension *extension, zend_op_array *op_array TSRMLS_DC)
750: {
751: if (extension->statement_handler) {
752: extension->statement_handler(op_array);
753: }
754: }
755:
756:
757: static void zend_extension_fcall_begin_handler(const zend_extension *extension, zend_op_array *op_array TSRMLS_DC)
758: {
759: if (extension->fcall_begin_handler) {
760: extension->fcall_begin_handler(op_array);
761: }
762: }
763:
764:
765: static void zend_extension_fcall_end_handler(const zend_extension *extension, zend_op_array *op_array TSRMLS_DC)
766: {
767: if (extension->fcall_end_handler) {
768: extension->fcall_end_handler(op_array);
769: }
770: }
771:
772:
773: static inline HashTable *zend_get_target_symbol_table(const zend_op *opline, const temp_variable *Ts, int type, const zval *variable TSRMLS_DC)
774: {
775: switch (opline->op2.u.EA.type) {
776: case ZEND_FETCH_LOCAL:
777: if (!EG(active_symbol_table)) {
778: zend_rebuild_symbol_table(TSRMLS_C);
779: }
780: return EG(active_symbol_table);
781: break;
782: case ZEND_FETCH_GLOBAL:
783: case ZEND_FETCH_GLOBAL_LOCK:
784: return &EG(symbol_table);
785: break;
786: case ZEND_FETCH_STATIC:
787: if (!EG(active_op_array)->static_variables) {
788: ALLOC_HASHTABLE(EG(active_op_array)->static_variables);
789: zend_hash_init(EG(active_op_array)->static_variables, 2, NULL, ZVAL_PTR_DTOR, 0);
790: }
791: return EG(active_op_array)->static_variables;
792: break;
793: EMPTY_SWITCH_DEFAULT_CASE()
794: }
795: return NULL;
796: }
797:
798: static inline zval **zend_fetch_dimension_address_inner(HashTable *ht, const zval *dim, int type TSRMLS_DC)
799: {
800: zval **retval;
801: char *offset_key;
802: int offset_key_length;
803: long index;
804:
805: switch (dim->type) {
806: case IS_NULL:
807: offset_key = "";
808: offset_key_length = 0;
809: goto fetch_string_dim;
810:
811: case IS_STRING:
812:
813: offset_key = dim->value.str.val;
814: offset_key_length = dim->value.str.len;
815:
816: fetch_string_dim:
817: if (zend_symtable_find(ht, offset_key, offset_key_length+1, (void **) &retval) == FAILURE) {
818: switch (type) {
819: case BP_VAR_R:
820: zend_error(E_NOTICE, "Undefined index: %s", offset_key);
821: /* break missing intentionally */
822: case BP_VAR_UNSET:
823: case BP_VAR_IS:
824: retval = &EG(uninitialized_zval_ptr);
825: break;
826: case BP_VAR_RW:
827: zend_error(E_NOTICE,"Undefined index: %s", offset_key);
828: /* break missing intentionally */
829: case BP_VAR_W: {
830: zval *new_zval = &EG(uninitialized_zval);
831:
832: Z_ADDREF_P(new_zval);
833: zend_symtable_update(ht, offset_key, offset_key_length+1, &new_zval, sizeof(zval *), (void **) &retval);
834: }
835: break;
836: }
837: }
838: break;
839: case IS_DOUBLE:
840: index = zend_dval_to_lval(Z_DVAL_P(dim));
841: goto num_index;
842: case IS_RESOURCE:
843: zend_error(E_STRICT, "Resource ID#%ld used as offset, casting to integer (%ld)", Z_LVAL_P(dim), Z_LVAL_P(dim));
844: /* Fall Through */
845: case IS_BOOL:
846: case IS_LONG:
847: index = Z_LVAL_P(dim);
848: num_index:
849: if (zend_hash_index_find(ht, index, (void **) &retval) == FAILURE) {
850: switch (type) {
851: case BP_VAR_R:
852: zend_error(E_NOTICE,"Undefined offset: %ld", index);
853: /* break missing intentionally */
854: case BP_VAR_UNSET:
855: case BP_VAR_IS:
856: retval = &EG(uninitialized_zval_ptr);
857: break;
858: case BP_VAR_RW:
859: zend_error(E_NOTICE,"Undefined offset: %ld", index);
860: /* break missing intentionally */
861: case BP_VAR_W: {
862: zval *new_zval = &EG(uninitialized_zval);
863:
864: Z_ADDREF_P(new_zval);
865: zend_hash_index_update(ht, index, &new_zval, sizeof(zval *), (void **) &retval);
866: }
867: break;
868: }
869: }
870: break;
871:
872: default:
873: zend_error(E_WARNING, "Illegal offset type");
874: return (type == BP_VAR_W || type == BP_VAR_RW) ?
875: &EG(error_zval_ptr) : &EG(uninitialized_zval_ptr);
876: }
877: return retval;
878: }
879:
880: static void zend_fetch_dimension_address(temp_variable *result, zval **container_ptr, zval *dim, int dim_is_tmp_var, int type TSRMLS_DC)
881: {
882: zval *container = *container_ptr;
883: zval **retval;
884:
885: switch (Z_TYPE_P(container)) {
886:
887: case IS_ARRAY:
888: if (type != BP_VAR_UNSET && Z_REFCOUNT_P(container)>1 && !PZVAL_IS_REF(container)) {
889: SEPARATE_ZVAL(container_ptr);
890: container = *container_ptr;
891: }
892: fetch_from_array:
893: if (dim == NULL) {
894: zval *new_zval = &EG(uninitialized_zval);
895:
896: Z_ADDREF_P(new_zval);
897: if (zend_hash_next_index_insert(Z_ARRVAL_P(container), &new_zval, sizeof(zval *), (void **) &retval) == FAILURE) {
898: zend_error(E_WARNING, "Cannot add element to the array as the next element is already occupied");
899: retval = &EG(error_zval_ptr);
900: Z_DELREF_P(new_zval);
901: }
902: } else {
903: retval = zend_fetch_dimension_address_inner(Z_ARRVAL_P(container), dim, type TSRMLS_CC);
904: }
905: result->var.ptr_ptr = retval;
906: PZVAL_LOCK(*retval);
907: return;
908: break;
909:
910: case IS_NULL:
911: if (container == EG(error_zval_ptr)) {
912: result->var.ptr_ptr = &EG(error_zval_ptr);
913: PZVAL_LOCK(EG(error_zval_ptr));
914: } else if (type != BP_VAR_UNSET) {
915: convert_to_array:
916: if (!PZVAL_IS_REF(container)) {
917: SEPARATE_ZVAL(container_ptr);
918: container = *container_ptr;
919: }
920: zval_dtor(container);
921: array_init(container);
922: goto fetch_from_array;
923: } else {
924: /* for read-mode only */
925: result->var.ptr_ptr = &EG(uninitialized_zval_ptr);
926: PZVAL_LOCK(EG(uninitialized_zval_ptr));
927: }
928: return;
929: break;
930:
931: case IS_STRING: {
932: zval tmp;
933:
934: if (type != BP_VAR_UNSET && Z_STRLEN_P(container)==0) {
935: goto convert_to_array;
936: }
937: if (dim == NULL) {
938: zend_error_noreturn(E_ERROR, "[] operator not supported for strings");
939: }
940:
941: if (Z_TYPE_P(dim) != IS_LONG) {
942: switch(Z_TYPE_P(dim)) {
943: /* case IS_LONG: */
944: case IS_STRING:
945: case IS_DOUBLE:
946: case IS_NULL:
947: case IS_BOOL:
948: /* do nothing */
949: break;
950: default:
951: zend_error(E_WARNING, "Illegal offset type");
952: break;
953: }
954:
955: tmp = *dim;
956: zval_copy_ctor(&tmp);
957: convert_to_long(&tmp);
958: dim = &tmp;
959: }
960: if (type != BP_VAR_UNSET) {
961: SEPARATE_ZVAL_IF_NOT_REF(container_ptr);
962: }
963: container = *container_ptr;
964: result->str_offset.str = container;
965: PZVAL_LOCK(container);
966: result->str_offset.offset = Z_LVAL_P(dim);
967: result->var.ptr_ptr = NULL;
968: result->var.ptr = NULL;
969: return;
970: }
971: break;
972:
973: case IS_OBJECT:
974: if (!Z_OBJ_HT_P(container)->read_dimension) {
975: zend_error_noreturn(E_ERROR, "Cannot use object as array");
976: } else {
977: zval *overloaded_result;
978:
979: if (dim_is_tmp_var) {
980: zval *orig = dim;
981: MAKE_REAL_ZVAL_PTR(dim);
982: ZVAL_NULL(orig);
983: }
984: overloaded_result = Z_OBJ_HT_P(container)->read_dimension(container, dim, type TSRMLS_CC);
985:
986: if (overloaded_result) {
987: if (!Z_ISREF_P(overloaded_result)) {
988: if (Z_REFCOUNT_P(overloaded_result) > 0) {
989: zval *tmp = overloaded_result;
990:
991: ALLOC_ZVAL(overloaded_result);
992: *overloaded_result = *tmp;
993: zval_copy_ctor(overloaded_result);
994: Z_UNSET_ISREF_P(overloaded_result);
995: Z_SET_REFCOUNT_P(overloaded_result, 0);
996: }
997: if (Z_TYPE_P(overloaded_result) != IS_OBJECT) {
998: zend_class_entry *ce = Z_OBJCE_P(container);
999: zend_error(E_NOTICE, "Indirect modification of overloaded element of %s has no effect", ce->name);
1000: }
1001: }
1002: retval = &overloaded_result;
1003: } else {
1004: retval = &EG(error_zval_ptr);
1005: }
1006: AI_SET_PTR(result->var, *retval);
1007: PZVAL_LOCK(*retval);
1008: if (dim_is_tmp_var) {
1009: zval_ptr_dtor(&dim);
1010: }
1011: }
1012: return;
1013: break;
1014:
1015: case IS_BOOL:
1016: if (type != BP_VAR_UNSET && Z_LVAL_P(container)==0) {
1017: goto convert_to_array;
1018: }
1019: /* break missing intentionally */
1020:
1021: default:
1022: if (type == BP_VAR_UNSET) {
1023: zend_error(E_WARNING, "Cannot unset offset in a non-array variable");
1024: AI_SET_PTR(result->var, EG(uninitialized_zval_ptr));
1025: PZVAL_LOCK(EG(uninitialized_zval_ptr));
1026: } else {
1027: zend_error(E_WARNING, "Cannot use a scalar value as an array");
1028: result->var.ptr_ptr = &EG(error_zval_ptr);
1029: PZVAL_LOCK(EG(error_zval_ptr));
1030: }
1031: break;
1032: }
1033: }
1034:
1035: static void zend_fetch_dimension_address_read(temp_variable *result, zval **container_ptr, zval *dim, int dim_is_tmp_var, int type TSRMLS_DC)
1036: {
1037: zval *container = *container_ptr;
1038: zval **retval;
1039:
1040: switch (Z_TYPE_P(container)) {
1041:
1042: case IS_ARRAY:
1043: retval = zend_fetch_dimension_address_inner(Z_ARRVAL_P(container), dim, type TSRMLS_CC);
1044: if (result) {
1045: AI_SET_PTR(result->var, *retval);
1046: PZVAL_LOCK(*retval);
1047: }
1048: return;
1049: break;
1050:
1051: case IS_NULL:
1052: if (result) {
1053: AI_SET_PTR(result->var, EG(uninitialized_zval_ptr));
1054: PZVAL_LOCK(EG(uninitialized_zval_ptr));
1055: }
1056: return;
1057: break;
1058:
1059: case IS_STRING: {
1060: zval tmp;
1061:
1062: if (Z_TYPE_P(dim) != IS_LONG) {
1063: switch(Z_TYPE_P(dim)) {
1064: /* case IS_LONG: */
1065: case IS_STRING:
1066: case IS_DOUBLE:
1067: case IS_NULL:
1068: case IS_BOOL:
1069: /* do nothing */
1070: break;
1071: default:
1072: zend_error(E_WARNING, "Illegal offset type");
1073: break;
1074: }
1075:
1076: tmp = *dim;
1077: zval_copy_ctor(&tmp);
1078: convert_to_long(&tmp);
1079: dim = &tmp;
1080: }
1081: if (result) {
1082: if ((Z_LVAL_P(dim) < 0 || Z_STRLEN_P(container) <= Z_LVAL_P(dim)) && type != BP_VAR_IS) {
1083: zend_error(E_NOTICE, "Uninitialized string offset: %ld", Z_LVAL_P(dim));
1084: }
1085: result->str_offset.str = container;
1086: PZVAL_LOCK(container);
1087: result->str_offset.offset = Z_LVAL_P(dim);
1088: result->var.ptr_ptr = NULL;
1089: result->var.ptr = NULL;
1090: }
1091: return;
1092: }
1093: break;
1094:
1095: case IS_OBJECT:
1096: if (!Z_OBJ_HT_P(container)->read_dimension) {
1097: zend_error_noreturn(E_ERROR, "Cannot use object as array");
1098: } else {
1099: zval *overloaded_result;
1100:
1101: if (dim_is_tmp_var) {
1102: zval *orig = dim;
1103: MAKE_REAL_ZVAL_PTR(dim);
1104: ZVAL_NULL(orig);
1105: }
1106: overloaded_result = Z_OBJ_HT_P(container)->read_dimension(container, dim, type TSRMLS_CC);
1107:
1108: if (overloaded_result) {
1109: if (result) {
1110: AI_SET_PTR(result->var, overloaded_result);
1111: PZVAL_LOCK(overloaded_result);
1112: } else if (Z_REFCOUNT_P(overloaded_result) == 0) {
1113: /* Destroy unused result from offsetGet() magic method */
1114: Z_SET_REFCOUNT_P(overloaded_result, 1);
1115: zval_ptr_dtor(&overloaded_result);
1116: }
1117: } else if (result) {
1118: AI_SET_PTR(result->var, EG(uninitialized_zval_ptr));
1119: PZVAL_LOCK(EG(uninitialized_zval_ptr));
1120: }
1121: if (dim_is_tmp_var) {
1122: zval_ptr_dtor(&dim);
1123: }
1124: }
1125: return;
1126: break;
1127:
1128: default:
1129: if (result) {
1130: AI_SET_PTR(result->var, EG(uninitialized_zval_ptr));
1131: PZVAL_LOCK(EG(uninitialized_zval_ptr));
1132: }
1133: return;
1134: break;
1135: }
1136: }
1137:
1138: static void zend_fetch_property_address(temp_variable *result, zval **container_ptr, zval *prop_ptr, int type TSRMLS_DC)
1139: {
1140: zval *container = *container_ptr;;
1141:
1142: if (Z_TYPE_P(container) != IS_OBJECT) {
1143: if (container == EG(error_zval_ptr)) {
1144: result->var.ptr_ptr = &EG(error_zval_ptr);
1145: PZVAL_LOCK(*result->var.ptr_ptr);
1146: return;
1147: }
1148:
1149: /* this should modify object only if it's empty */
1150: if (type != BP_VAR_UNSET &&
1151: ((Z_TYPE_P(container) == IS_NULL ||
1152: (Z_TYPE_P(container) == IS_BOOL && Z_LVAL_P(container)==0) ||
1153: (Z_TYPE_P(container) == IS_STRING && Z_STRLEN_P(container)==0)))) {
1154: if (!PZVAL_IS_REF(container)) {
1155: SEPARATE_ZVAL(container_ptr);
1156: container = *container_ptr;
1157: }
1158: object_init(container);
1159: } else {
1160: zend_error(E_WARNING, "Attempt to modify property of non-object");
1161: result->var.ptr_ptr = &EG(error_zval_ptr);
1162: PZVAL_LOCK(EG(error_zval_ptr));
1163: return;
1164: }
1165: }
1166:
1167: if (Z_OBJ_HT_P(container)->get_property_ptr_ptr) {
1168: zval **ptr_ptr = Z_OBJ_HT_P(container)->get_property_ptr_ptr(container, prop_ptr TSRMLS_CC);
1169: if (NULL == ptr_ptr) {
1170: zval *ptr;
1171:
1172: if (Z_OBJ_HT_P(container)->read_property &&
1173: (ptr = Z_OBJ_HT_P(container)->read_property(container, prop_ptr, type TSRMLS_CC)) != NULL) {
1174: AI_SET_PTR(result->var, ptr);
1175: PZVAL_LOCK(ptr);
1176: } else {
1177: zend_error_noreturn(E_ERROR, "Cannot access undefined property for object with overloaded property access");
1178: }
1179: } else {
1180: result->var.ptr_ptr = ptr_ptr;
1181: PZVAL_LOCK(*ptr_ptr);
1182: }
1183: } else if (Z_OBJ_HT_P(container)->read_property) {
1184: zval *ptr = Z_OBJ_HT_P(container)->read_property(container, prop_ptr, type TSRMLS_CC);
1185:
1186: AI_SET_PTR(result->var, ptr);
1187: PZVAL_LOCK(ptr);
1188: } else {
1189: zend_error(E_WARNING, "This object doesn't support property references");
1190: result->var.ptr_ptr = &EG(error_zval_ptr);
1191: PZVAL_LOCK(EG(error_zval_ptr));
1192: }
1193: }
1194:
1195: static inline zend_brk_cont_element* zend_brk_cont(const zval *nest_levels_zval, int array_offset, const zend_op_array *op_array, const temp_variable *Ts TSRMLS_DC)
1196: {
1197: zval tmp;
1198: int nest_levels, original_nest_levels;
1199: zend_brk_cont_element *jmp_to;
1200:
1201: if (nest_levels_zval->type != IS_LONG) {
1202: tmp = *nest_levels_zval;
1203: zval_copy_ctor(&tmp);
1204: convert_to_long(&tmp);
1205: nest_levels = tmp.value.lval;
1206: } else {
1207: nest_levels = nest_levels_zval->value.lval;
1208: }
1209: original_nest_levels = nest_levels;
1210: do {
1211: if (array_offset==-1) {
1212: zend_error_noreturn(E_ERROR, "Cannot break/continue %d level%s", original_nest_levels, (original_nest_levels == 1) ? "" : "s");
1213: }
1214: jmp_to = &op_array->brk_cont_array[array_offset];
1215: if (nest_levels>1) {
1216: zend_op *brk_opline = &op_array->opcodes[jmp_to->brk];
1217:
1218: switch (brk_opline->opcode) {
1219: case ZEND_SWITCH_FREE:
1220: if (brk_opline->op1.u.EA.type != EXT_TYPE_FREE_ON_RETURN) {
1221: zend_switch_free(&T(brk_opline->op1.u.var), brk_opline->extended_value TSRMLS_CC);
1222: }
1223: break;
1224: case ZEND_FREE:
1225: if (brk_opline->op1.u.EA.type != EXT_TYPE_FREE_ON_RETURN) {
1226: zendi_zval_dtor(T(brk_opline->op1.u.var).tmp_var);
1227: }
1228: break;
1229: }
1230: }
1231: array_offset = jmp_to->parent;
1232: } while (--nest_levels > 0);
1233: return jmp_to;
1234: }
1235:
1236: #if ZEND_INTENSIVE_DEBUGGING
1237:
1238: #define CHECK_SYMBOL_TABLES() \
1239: zend_hash_apply(&EG(symbol_table), (apply_func_t) zend_check_symbol TSRMLS_CC); \
1240: if (&EG(symbol_table)!=EG(active_symbol_table)) { \
1241: zend_hash_apply(EG(active_symbol_table), (apply_func_t) zend_check_symbol TSRMLS_CC); \
1242: }
1243:
1244: static int zend_check_symbol(zval **pz TSRMLS_DC)
1245: {
1246: if (Z_TYPE_PP(pz) > 9) {
1247: fprintf(stderr, "Warning! %x has invalid type!\n", *pz);
1248: /* See http://support.microsoft.com/kb/190351 */
1249: #ifdef PHP_WIN32
1250: fflush(stderr);
1251: #endif
1252: } else if (Z_TYPE_PP(pz) == IS_ARRAY) {
1253: zend_hash_apply(Z_ARRVAL_PP(pz), (apply_func_t) zend_check_symbol TSRMLS_CC);
1254: } else if (Z_TYPE_PP(pz) == IS_OBJECT) {
1255:
1256: /* OBJ-TBI - doesn't support new object model! */
1257: zend_hash_apply(Z_OBJPROP_PP(pz), (apply_func_t) zend_check_symbol TSRMLS_CC);
1258: }
1259:
1260: return 0;
1261: }
1262:
1263:
1264: #else
1265: #define CHECK_SYMBOL_TABLES()
1266: #endif
1267:
1268: ZEND_API opcode_handler_t *zend_opcode_handlers;
1269:
1270: ZEND_API void execute_internal(zend_execute_data *execute_data_ptr, int return_value_used TSRMLS_DC)
1271: {
1272: zval **return_value_ptr = &(*(temp_variable *)((char *) execute_data_ptr->Ts + execute_data_ptr->opline->result.u.var)).var.ptr;
1273: ((zend_internal_function *) execute_data_ptr->function_state.function)->handler(execute_data_ptr->opline->extended_value, *return_value_ptr, execute_data_ptr->function_state.function->common.return_reference?return_value_ptr:NULL, execute_data_ptr->object, return_value_used TSRMLS_CC);
1274: }
1275:
1276: #define ZEND_VM_NEXT_OPCODE() \
1277: CHECK_SYMBOL_TABLES() \
1278: EX(opline)++; \
1279: ZEND_VM_CONTINUE()
1280:
1281: #define ZEND_VM_SET_OPCODE(new_op) \
1282: CHECK_SYMBOL_TABLES() \
1283: EX(opline) = new_op
1284:
1285: #define ZEND_VM_JMP(new_op) \
1286: CHECK_SYMBOL_TABLES() \
1287: if (EXPECTED(!EG(exception))) { \
1288: EX(opline) = new_op; \
1289: } \
1290: ZEND_VM_CONTINUE()
1291:
1292: #define ZEND_VM_INC_OPCODE() \
1293: EX(opline)++
1294:
1295: #include "zend_vm_execute.h"
1296:
1297: ZEND_API int zend_set_user_opcode_handler(zend_uchar opcode, user_opcode_handler_t handler)
1298: {
1299: if (opcode != ZEND_USER_OPCODE) {
1300: zend_user_opcodes[opcode] = ZEND_USER_OPCODE;
1301: zend_user_opcode_handlers[opcode] = handler;
1302: return SUCCESS;
1303: }
1304: return FAILURE;
1305: }
1306:
1307: ZEND_API user_opcode_handler_t zend_get_user_opcode_handler(zend_uchar opcode)
1308: {
1309: return zend_user_opcode_handlers[opcode];
1310: }
1311:
1312: ZEND_API zval *zend_get_zval_ptr(znode *node, const temp_variable *Ts, zend_free_op *should_free, int type TSRMLS_DC) {
1313: return get_zval_ptr(node, Ts, should_free, type);
1314: }
1315:
1316: ZEND_API zval **zend_get_zval_ptr_ptr(const znode *node, const temp_variable *Ts, zend_free_op *should_free, int type TSRMLS_DC) {
1317: return get_zval_ptr_ptr(node, Ts, should_free, type);
1318: }
1319:
1320: /*
1321: * Local variables:
1322: * tab-width: 4
1323: * c-basic-offset: 4
1324: * indent-tabs-mode: t
1325: * End:
1326: */
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