1: /*
2: +----------------------------------------------------------------------+
3: | Zend Engine |
4: +----------------------------------------------------------------------+
5: | Copyright (c) 1998-2013 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_object_handlers.c,v 1.1.1.3 2013/07/22 01:32:16 misho Exp $ */
21:
22: #include "zend.h"
23: #include "zend_globals.h"
24: #include "zend_variables.h"
25: #include "zend_API.h"
26: #include "zend_objects.h"
27: #include "zend_objects_API.h"
28: #include "zend_object_handlers.h"
29: #include "zend_interfaces.h"
30: #include "zend_closures.h"
31: #include "zend_compile.h"
32:
33: #define DEBUG_OBJECT_HANDLERS 0
34:
35: #define Z_OBJ_P(zval_p) \
36: ((zend_object*)(EG(objects_store).object_buckets[Z_OBJ_HANDLE_P(zval_p)].bucket.obj.object))
37:
38: #define Z_OBJ_PROTECT_RECURSION(zval_p) \
39: do { \
40: if (EG(objects_store).object_buckets[Z_OBJ_HANDLE_P(zval_p)].apply_count++ >= 3) { \
41: zend_error(E_ERROR, "Nesting level too deep - recursive dependency?"); \
42: } \
43: } while (0)
44:
45:
46: #define Z_OBJ_UNPROTECT_RECURSION(zval_p) \
47: EG(objects_store).object_buckets[Z_OBJ_HANDLE_P(zval_p)].apply_count--
48:
49: /*
50: __X accessors explanation:
51:
52: if we have __get and property that is not part of the properties array is
53: requested, we call __get handler. If it fails, we return uninitialized.
54:
55: if we have __set and property that is not part of the properties array is
56: set, we call __set handler. If it fails, we do not change the array.
57:
58: for both handlers above, when we are inside __get/__set, no further calls for
59: __get/__set for this property of this object will be made, to prevent endless
60: recursion and enable accessors to change properties array.
61:
62: if we have __call and method which is not part of the class function table is
63: called, we cal __call handler.
64: */
65:
66: ZEND_API void rebuild_object_properties(zend_object *zobj) /* {{{ */
67: {
68: if (!zobj->properties) {
69: HashPosition pos;
70: zend_property_info *prop_info;
71: zend_class_entry *ce = zobj->ce;
72:
73: ALLOC_HASHTABLE(zobj->properties);
74: zend_hash_init(zobj->properties, 0, NULL, ZVAL_PTR_DTOR, 0);
75: if (ce->default_properties_count) {
76: for (zend_hash_internal_pointer_reset_ex(&ce->properties_info, &pos);
77: zend_hash_get_current_data_ex(&ce->properties_info, (void**)&prop_info, &pos) == SUCCESS;
78: zend_hash_move_forward_ex(&ce->properties_info, &pos)) {
79: if (/*prop_info->ce == ce &&*/
80: (prop_info->flags & ZEND_ACC_STATIC) == 0 &&
81: prop_info->offset >= 0 &&
82: zobj->properties_table[prop_info->offset]) {
83: 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]);
84: }
85: }
86: while (ce->parent && ce->parent->default_properties_count) {
87: ce = ce->parent;
88: for (zend_hash_internal_pointer_reset_ex(&ce->properties_info, &pos);
89: zend_hash_get_current_data_ex(&ce->properties_info, (void**)&prop_info, &pos) == SUCCESS;
90: zend_hash_move_forward_ex(&ce->properties_info, &pos)) {
91: if (prop_info->ce == ce &&
92: (prop_info->flags & ZEND_ACC_STATIC) == 0 &&
93: (prop_info->flags & ZEND_ACC_PRIVATE) != 0 &&
94: prop_info->offset >= 0 &&
95: zobj->properties_table[prop_info->offset]) {
96: 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]);
97: }
98: }
99: }
100: }
101: }
102: }
103: /* }}} */
104:
105: ZEND_API HashTable *zend_std_get_properties(zval *object TSRMLS_DC) /* {{{ */
106: {
107: zend_object *zobj;
108: zobj = Z_OBJ_P(object);
109: if (!zobj->properties) {
110: rebuild_object_properties(zobj);
111: }
112: return zobj->properties;
113: }
114: /* }}} */
115:
116: ZEND_API HashTable *zend_std_get_gc(zval *object, zval ***table, int *n TSRMLS_DC) /* {{{ */
117: {
118: if (Z_OBJ_HANDLER_P(object, get_properties) != zend_std_get_properties) {
119: *table = NULL;
120: *n = 0;
121: return Z_OBJ_HANDLER_P(object, get_properties)(object TSRMLS_CC);
122: } else {
123: zend_object *zobj = Z_OBJ_P(object);
124:
125: if (zobj->properties) {
126: *table = NULL;
127: *n = 0;
128: return zobj->properties;
129: } else {
130: *table = zobj->properties_table;
131: *n = zobj->ce->default_properties_count;
132: return NULL;
133: }
134: }
135: }
136: /* }}} */
137:
138: ZEND_API HashTable *zend_std_get_debug_info(zval *object, int *is_temp TSRMLS_DC) /* {{{ */
139: {
140: *is_temp = 0;
141: return zend_std_get_properties(object TSRMLS_CC);
142: }
143: /* }}} */
144:
145: static zval *zend_std_call_getter(zval *object, zval *member TSRMLS_DC) /* {{{ */
146: {
147: zval *retval = NULL;
148: zend_class_entry *ce = Z_OBJCE_P(object);
149:
150: /* __get handler is called with one argument:
151: property name
152:
153: it should return whether the call was successfull or not
154: */
155:
156: SEPARATE_ARG_IF_REF(member);
157:
158: zend_call_method_with_1_params(&object, ce, &ce->__get, ZEND_GET_FUNC_NAME, &retval, member);
159:
160: zval_ptr_dtor(&member);
161:
162: if (retval) {
163: Z_DELREF_P(retval);
164: }
165:
166: return retval;
167: }
168: /* }}} */
169:
170: static int zend_std_call_setter(zval *object, zval *member, zval *value TSRMLS_DC) /* {{{ */
171: {
172: zval *retval = NULL;
173: int result;
174: zend_class_entry *ce = Z_OBJCE_P(object);
175:
176: SEPARATE_ARG_IF_REF(member);
177: Z_ADDREF_P(value);
178:
179: /* __set handler is called with two arguments:
180: property name
181: value to be set
182:
183: it should return whether the call was successfull or not
184: */
185: zend_call_method_with_2_params(&object, ce, &ce->__set, ZEND_SET_FUNC_NAME, &retval, member, value);
186:
187: zval_ptr_dtor(&member);
188: zval_ptr_dtor(&value);
189:
190: if (retval) {
191: result = i_zend_is_true(retval) ? SUCCESS : FAILURE;
192: zval_ptr_dtor(&retval);
193: return result;
194: } else {
195: return FAILURE;
196: }
197: }
198: /* }}} */
199:
200: static void zend_std_call_unsetter(zval *object, zval *member TSRMLS_DC) /* {{{ */
201: {
202: zend_class_entry *ce = Z_OBJCE_P(object);
203:
204: /* __unset handler is called with one argument:
205: property name
206: */
207:
208: SEPARATE_ARG_IF_REF(member);
209:
210: zend_call_method_with_1_params(&object, ce, &ce->__unset, ZEND_UNSET_FUNC_NAME, NULL, member);
211:
212: zval_ptr_dtor(&member);
213: }
214: /* }}} */
215:
216: static zval *zend_std_call_issetter(zval *object, zval *member TSRMLS_DC) /* {{{ */
217: {
218: zval *retval = NULL;
219: zend_class_entry *ce = Z_OBJCE_P(object);
220:
221: /* __isset handler is called with one argument:
222: property name
223:
224: it should return whether the property is set or not
225: */
226:
227: SEPARATE_ARG_IF_REF(member);
228:
229: zend_call_method_with_1_params(&object, ce, &ce->__isset, ZEND_ISSET_FUNC_NAME, &retval, member);
230:
231: zval_ptr_dtor(&member);
232:
233: return retval;
234: }
235: /* }}} */
236:
237: static zend_always_inline int zend_verify_property_access(zend_property_info *property_info, zend_class_entry *ce TSRMLS_DC) /* {{{ */
238: {
239: switch (property_info->flags & ZEND_ACC_PPP_MASK) {
240: case ZEND_ACC_PUBLIC:
241: return 1;
242: case ZEND_ACC_PROTECTED:
243: return zend_check_protected(property_info->ce, EG(scope));
244: case ZEND_ACC_PRIVATE:
245: if ((ce==EG(scope) || property_info->ce == EG(scope)) && EG(scope)) {
246: return 1;
247: } else {
248: return 0;
249: }
250: break;
251: }
252: return 0;
253: }
254: /* }}} */
255:
256: static zend_always_inline zend_bool is_derived_class(zend_class_entry *child_class, zend_class_entry *parent_class) /* {{{ */
257: {
258: child_class = child_class->parent;
259: while (child_class) {
260: if (child_class == parent_class) {
261: return 1;
262: }
263: child_class = child_class->parent;
264: }
265:
266: return 0;
267: }
268: /* }}} */
269:
270: 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) /* {{{ */
271: {
272: zend_property_info *property_info;
273: zend_property_info *scope_property_info;
274: zend_bool denied_access = 0;
275: ulong h;
276:
277: if (key && (property_info = CACHED_POLYMORPHIC_PTR(key->cache_slot, ce)) != NULL) {
278: return property_info;
279: }
280:
281: if (UNEXPECTED(Z_STRVAL_P(member)[0] == '\0')) {
282: if (!silent) {
283: if (Z_STRLEN_P(member) == 0) {
284: zend_error_noreturn(E_ERROR, "Cannot access empty property");
285: } else {
286: zend_error_noreturn(E_ERROR, "Cannot access property started with '\\0'");
287: }
288: }
289: return NULL;
290: }
291: property_info = NULL;
292: h = key ? key->hash_value : zend_get_hash_value(Z_STRVAL_P(member), Z_STRLEN_P(member) + 1);
293: if (zend_hash_quick_find(&ce->properties_info, Z_STRVAL_P(member), Z_STRLEN_P(member)+1, h, (void **) &property_info)==SUCCESS) {
294: if (UNEXPECTED((property_info->flags & ZEND_ACC_SHADOW) != 0)) {
295: /* if it's a shadow - go to access it's private */
296: property_info = NULL;
297: } else {
298: if (EXPECTED(zend_verify_property_access(property_info, ce TSRMLS_CC) != 0)) {
299: if (EXPECTED((property_info->flags & ZEND_ACC_CHANGED) != 0)
300: && EXPECTED(!(property_info->flags & ZEND_ACC_PRIVATE))) {
301: /* We still need to make sure that we're not in a context
302: * where the right property is a different 'statically linked' private
303: * continue checking below...
304: */
305: } else {
306: if (UNEXPECTED((property_info->flags & ZEND_ACC_STATIC) != 0) && !silent) {
307: zend_error(E_STRICT, "Accessing static property %s::$%s as non static", ce->name, Z_STRVAL_P(member));
308: }
309: if (key) {
310: CACHE_POLYMORPHIC_PTR(key->cache_slot, ce, property_info);
311: }
312: return property_info;
313: }
314: } else {
315: /* Try to look in the scope instead */
316: denied_access = 1;
317: }
318: }
319: }
320: if (EG(scope) != ce
321: && EG(scope)
322: && is_derived_class(ce, EG(scope))
323: && zend_hash_quick_find(&EG(scope)->properties_info, Z_STRVAL_P(member), Z_STRLEN_P(member)+1, h, (void **) &scope_property_info)==SUCCESS
324: && scope_property_info->flags & ZEND_ACC_PRIVATE) {
325: if (key) {
326: CACHE_POLYMORPHIC_PTR(key->cache_slot, ce, scope_property_info);
327: }
328: return scope_property_info;
329: } else if (property_info) {
330: if (UNEXPECTED(denied_access != 0)) {
331: /* Information was available, but we were denied access. Error out. */
332: if (!silent) {
333: zend_error_noreturn(E_ERROR, "Cannot access %s property %s::$%s", zend_visibility_string(property_info->flags), ce->name, Z_STRVAL_P(member));
334: }
335: return NULL;
336: } else {
337: /* fall through, return property_info... */
338: if (key) {
339: CACHE_POLYMORPHIC_PTR(key->cache_slot, ce, property_info);
340: }
341: }
342: } else {
343: EG(std_property_info).flags = ZEND_ACC_PUBLIC;
344: EG(std_property_info).name = Z_STRVAL_P(member);
345: EG(std_property_info).name_length = Z_STRLEN_P(member);
346: EG(std_property_info).h = h;
347: EG(std_property_info).ce = ce;
348: EG(std_property_info).offset = -1;
349: property_info = &EG(std_property_info);
350: }
351: return property_info;
352: }
353: /* }}} */
354:
355: ZEND_API struct _zend_property_info *zend_get_property_info(zend_class_entry *ce, zval *member, int silent TSRMLS_DC) /* {{{ */
356: {
357: return zend_get_property_info_quick(ce, member, silent, NULL TSRMLS_CC);
358: }
359: /* }}} */
360:
361: ZEND_API int zend_check_property_access(zend_object *zobj, const char *prop_info_name, int prop_info_name_len TSRMLS_DC) /* {{{ */
362: {
363: zend_property_info *property_info;
364: const char *class_name, *prop_name;
365: zval member;
366:
367: zend_unmangle_property_name(prop_info_name, prop_info_name_len, &class_name, &prop_name);
368: ZVAL_STRING(&member, prop_name, 0);
369: property_info = zend_get_property_info_quick(zobj->ce, &member, 1, NULL TSRMLS_CC);
370: if (!property_info) {
371: return FAILURE;
372: }
373: if (class_name && class_name[0] != '*') {
374: if (!(property_info->flags & ZEND_ACC_PRIVATE)) {
375: /* we we're looking for a private prop but found a non private one of the same name */
376: return FAILURE;
377: } else if (strcmp(prop_info_name+1, property_info->name+1)) {
378: /* we we're looking for a private prop but found a private one of the same name but another class */
379: return FAILURE;
380: }
381: }
382: return zend_verify_property_access(property_info, zobj->ce TSRMLS_CC) ? SUCCESS : FAILURE;
383: }
384: /* }}} */
385:
386: static int zend_get_property_guard(zend_object *zobj, zend_property_info *property_info, zval *member, zend_guard **pguard) /* {{{ */
387: {
388: zend_property_info info;
389: zend_guard stub;
390:
391: if (!property_info) {
392: property_info = &info;
393: info.name = Z_STRVAL_P(member);
394: info.name_length = Z_STRLEN_P(member);
395: info.h = zend_get_hash_value(Z_STRVAL_P(member), Z_STRLEN_P(member) + 1);
396: } else if(property_info->name[0] == '\0'){
397: const char *class_name = NULL, *prop_name = NULL;
398: zend_unmangle_property_name(property_info->name, property_info->name_length, &class_name, &prop_name);
399: if(class_name) {
400: /* use unmangled name for protected properties */
401: info.name = prop_name;
402: info.name_length = strlen(prop_name);
403: info.h = zend_get_hash_value(info.name, info.name_length+1);
404: property_info = &info;
405: }
406: }
407: if (!zobj->guards) {
408: ALLOC_HASHTABLE(zobj->guards);
409: zend_hash_init(zobj->guards, 0, NULL, NULL, 0);
410: } else if (zend_hash_quick_find(zobj->guards, property_info->name, property_info->name_length+1, property_info->h, (void **) pguard) == SUCCESS) {
411: return SUCCESS;
412: }
413: stub.in_get = 0;
414: stub.in_set = 0;
415: stub.in_unset = 0;
416: stub.in_isset = 0;
417: return zend_hash_quick_add(zobj->guards, property_info->name, property_info->name_length+1, property_info->h, (void**)&stub, sizeof(stub), (void**) pguard);
418: }
419: /* }}} */
420:
421: zval *zend_std_read_property(zval *object, zval *member, int type, const zend_literal *key TSRMLS_DC) /* {{{ */
422: {
423: zend_object *zobj;
424: zval *tmp_member = NULL;
425: zval **retval;
426: zval *rv = NULL;
427: zend_property_info *property_info;
428: int silent;
429:
430: silent = (type == BP_VAR_IS);
431: zobj = Z_OBJ_P(object);
432:
433: if (UNEXPECTED(Z_TYPE_P(member) != IS_STRING)) {
434: ALLOC_ZVAL(tmp_member);
435: *tmp_member = *member;
436: INIT_PZVAL(tmp_member);
437: zval_copy_ctor(tmp_member);
438: convert_to_string(tmp_member);
439: member = tmp_member;
440: key = NULL;
441: }
442:
443: #if DEBUG_OBJECT_HANDLERS
444: fprintf(stderr, "Read object #%d property: %s\n", Z_OBJ_HANDLE_P(object), Z_STRVAL_P(member));
445: #endif
446:
447: /* make zend_get_property_info silent if we have getter - we may want to use it */
448: property_info = zend_get_property_info_quick(zobj->ce, member, silent || (zobj->ce->__get != NULL), key TSRMLS_CC);
449:
450: if (UNEXPECTED(!property_info) ||
451: ((EXPECTED((property_info->flags & ZEND_ACC_STATIC) == 0) &&
452: property_info->offset >= 0) ?
453: (zobj->properties ?
454: ((retval = (zval**)zobj->properties_table[property_info->offset]) == NULL) :
455: (*(retval = &zobj->properties_table[property_info->offset]) == NULL)) :
456: (UNEXPECTED(!zobj->properties) ||
457: UNEXPECTED(zend_hash_quick_find(zobj->properties, property_info->name, property_info->name_length+1, property_info->h, (void **) &retval) == FAILURE)))) {
458: zend_guard *guard = NULL;
459:
460: if (zobj->ce->__get &&
461: zend_get_property_guard(zobj, property_info, member, &guard) == SUCCESS &&
462: !guard->in_get) {
463: /* have getter - try with it! */
464: Z_ADDREF_P(object);
465: if (PZVAL_IS_REF(object)) {
466: SEPARATE_ZVAL(&object);
467: }
468: guard->in_get = 1; /* prevent circular getting */
469: rv = zend_std_call_getter(object, member TSRMLS_CC);
470: guard->in_get = 0;
471:
472: if (rv) {
473: retval = &rv;
474: if (!Z_ISREF_P(rv) &&
475: (type == BP_VAR_W || type == BP_VAR_RW || type == BP_VAR_UNSET)) {
476: if (Z_REFCOUNT_P(rv) > 0) {
477: zval *tmp = rv;
478:
479: ALLOC_ZVAL(rv);
480: *rv = *tmp;
481: zval_copy_ctor(rv);
482: Z_UNSET_ISREF_P(rv);
483: Z_SET_REFCOUNT_P(rv, 0);
484: }
485: if (UNEXPECTED(Z_TYPE_P(rv) != IS_OBJECT)) {
486: zend_error(E_NOTICE, "Indirect modification of overloaded property %s::$%s has no effect", zobj->ce->name, Z_STRVAL_P(member));
487: }
488: }
489: } else {
490: retval = &EG(uninitialized_zval_ptr);
491: }
492: if (EXPECTED(*retval != object)) {
493: zval_ptr_dtor(&object);
494: } else {
495: Z_DELREF_P(object);
496: }
497: } else {
498: if (zobj->ce->__get && guard && guard->in_get == 1) {
499: if (Z_STRVAL_P(member)[0] == '\0') {
500: if (Z_STRLEN_P(member) == 0) {
501: zend_error(E_ERROR, "Cannot access empty property");
502: } else {
503: zend_error(E_ERROR, "Cannot access property started with '\\0'");
504: }
505: }
506: }
507: if (!silent) {
508: zend_error(E_NOTICE,"Undefined property: %s::$%s", zobj->ce->name, Z_STRVAL_P(member));
509: }
510: retval = &EG(uninitialized_zval_ptr);
511: }
512: }
513: if (UNEXPECTED(tmp_member != NULL)) {
514: Z_ADDREF_PP(retval);
515: zval_ptr_dtor(&tmp_member);
516: Z_DELREF_PP(retval);
517: }
518: return *retval;
519: }
520: /* }}} */
521:
522: ZEND_API void zend_std_write_property(zval *object, zval *member, zval *value, const zend_literal *key TSRMLS_DC) /* {{{ */
523: {
524: zend_object *zobj;
525: zval *tmp_member = NULL;
526: zval **variable_ptr;
527: zend_property_info *property_info;
528:
529: zobj = Z_OBJ_P(object);
530:
531: if (UNEXPECTED(Z_TYPE_P(member) != IS_STRING)) {
532: ALLOC_ZVAL(tmp_member);
533: *tmp_member = *member;
534: INIT_PZVAL(tmp_member);
535: zval_copy_ctor(tmp_member);
536: convert_to_string(tmp_member);
537: member = tmp_member;
538: key = NULL;
539: }
540:
541: property_info = zend_get_property_info_quick(zobj->ce, member, (zobj->ce->__set != NULL), key TSRMLS_CC);
542:
543: if (EXPECTED(property_info != NULL) &&
544: ((EXPECTED((property_info->flags & ZEND_ACC_STATIC) == 0) &&
545: property_info->offset >= 0) ?
546: (zobj->properties ?
547: ((variable_ptr = (zval**)zobj->properties_table[property_info->offset]) != NULL) :
548: (*(variable_ptr = &zobj->properties_table[property_info->offset]) != NULL)) :
549: (EXPECTED(zobj->properties != NULL) &&
550: EXPECTED(zend_hash_quick_find(zobj->properties, property_info->name, property_info->name_length+1, property_info->h, (void **) &variable_ptr) == SUCCESS)))) {
551: /* if we already have this value there, we don't actually need to do anything */
552: if (EXPECTED(*variable_ptr != value)) {
553: /* if we are assigning reference, we shouldn't move it, but instead assign variable
554: to the same pointer */
555: if (PZVAL_IS_REF(*variable_ptr)) {
556: zval garbage = **variable_ptr; /* old value should be destroyed */
557:
558: /* To check: can't *variable_ptr be some system variable like error_zval here? */
559: Z_TYPE_PP(variable_ptr) = Z_TYPE_P(value);
560: (*variable_ptr)->value = value->value;
561: if (Z_REFCOUNT_P(value) > 0) {
562: zval_copy_ctor(*variable_ptr);
563: } else {
564: efree(value);
565: }
566: zval_dtor(&garbage);
567: } else {
568: zval *garbage = *variable_ptr;
569:
570: /* if we assign referenced variable, we should separate it */
571: Z_ADDREF_P(value);
572: if (PZVAL_IS_REF(value)) {
573: SEPARATE_ZVAL(&value);
574: }
575: *variable_ptr = value;
576: zval_ptr_dtor(&garbage);
577: }
578: }
579: } else {
580: zend_guard *guard = NULL;
581:
582: if (zobj->ce->__set &&
583: zend_get_property_guard(zobj, property_info, member, &guard) == SUCCESS &&
584: !guard->in_set) {
585: Z_ADDREF_P(object);
586: if (PZVAL_IS_REF(object)) {
587: SEPARATE_ZVAL(&object);
588: }
589: guard->in_set = 1; /* prevent circular setting */
590: if (zend_std_call_setter(object, member, value TSRMLS_CC) != SUCCESS) {
591: /* for now, just ignore it - __set should take care of warnings, etc. */
592: }
593: guard->in_set = 0;
594: zval_ptr_dtor(&object);
595: } else if (EXPECTED(property_info != NULL)) {
596: /* if we assign referenced variable, we should separate it */
597: Z_ADDREF_P(value);
598: if (PZVAL_IS_REF(value)) {
599: SEPARATE_ZVAL(&value);
600: }
601: if (EXPECTED((property_info->flags & ZEND_ACC_STATIC) == 0) &&
602: property_info->offset >= 0) {
603: if (!zobj->properties) {
604: zobj->properties_table[property_info->offset] = value;
605: } else if (zobj->properties_table[property_info->offset]) {
606: *(zval**)zobj->properties_table[property_info->offset] = value;
607: } else {
608: 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]);
609: }
610: } else {
611: if (!zobj->properties) {
612: rebuild_object_properties(zobj);
613: }
614: zend_hash_quick_update(zobj->properties, property_info->name, property_info->name_length+1, property_info->h, &value, sizeof(zval *), NULL);
615: }
616: } else if (zobj->ce->__set && guard && guard->in_set == 1) {
617: if (Z_STRVAL_P(member)[0] == '\0') {
618: if (Z_STRLEN_P(member) == 0) {
619: zend_error(E_ERROR, "Cannot access empty property");
620: } else {
621: zend_error(E_ERROR, "Cannot access property started with '\\0'");
622: }
623: }
624: }
625: }
626:
627: if (UNEXPECTED(tmp_member != NULL)) {
628: zval_ptr_dtor(&tmp_member);
629: }
630: }
631: /* }}} */
632:
633: zval *zend_std_read_dimension(zval *object, zval *offset, int type TSRMLS_DC) /* {{{ */
634: {
635: zend_class_entry *ce = Z_OBJCE_P(object);
636: zval *retval;
637:
638: if (EXPECTED(instanceof_function_ex(ce, zend_ce_arrayaccess, 1 TSRMLS_CC) != 0)) {
639: if(offset == NULL) {
640: /* [] construct */
641: ALLOC_INIT_ZVAL(offset);
642: } else {
643: SEPARATE_ARG_IF_REF(offset);
644: }
645: zend_call_method_with_1_params(&object, ce, NULL, "offsetget", &retval, offset);
646:
647: zval_ptr_dtor(&offset);
648:
649: if (UNEXPECTED(!retval)) {
650: if (UNEXPECTED(!EG(exception))) {
651: zend_error_noreturn(E_ERROR, "Undefined offset for object of type %s used as array", ce->name);
652: }
653: return 0;
654: }
655:
656: /* Undo PZVAL_LOCK() */
657: Z_DELREF_P(retval);
658:
659: return retval;
660: } else {
661: zend_error_noreturn(E_ERROR, "Cannot use object of type %s as array", ce->name);
662: return 0;
663: }
664: }
665: /* }}} */
666:
667: static void zend_std_write_dimension(zval *object, zval *offset, zval *value TSRMLS_DC) /* {{{ */
668: {
669: zend_class_entry *ce = Z_OBJCE_P(object);
670:
671: if (EXPECTED(instanceof_function_ex(ce, zend_ce_arrayaccess, 1 TSRMLS_CC) != 0)) {
672: if (!offset) {
673: ALLOC_INIT_ZVAL(offset);
674: } else {
675: SEPARATE_ARG_IF_REF(offset);
676: }
677: zend_call_method_with_2_params(&object, ce, NULL, "offsetset", NULL, offset, value);
678: zval_ptr_dtor(&offset);
679: } else {
680: zend_error_noreturn(E_ERROR, "Cannot use object of type %s as array", ce->name);
681: }
682: }
683: /* }}} */
684:
685: static int zend_std_has_dimension(zval *object, zval *offset, int check_empty TSRMLS_DC) /* {{{ */
686: {
687: zend_class_entry *ce = Z_OBJCE_P(object);
688: zval *retval;
689: int result;
690:
691: if (EXPECTED(instanceof_function_ex(ce, zend_ce_arrayaccess, 1 TSRMLS_CC) != 0)) {
692: SEPARATE_ARG_IF_REF(offset);
693: zend_call_method_with_1_params(&object, ce, NULL, "offsetexists", &retval, offset);
694: if (EXPECTED(retval != NULL)) {
695: result = i_zend_is_true(retval);
696: zval_ptr_dtor(&retval);
697: if (check_empty && result && EXPECTED(!EG(exception))) {
698: zend_call_method_with_1_params(&object, ce, NULL, "offsetget", &retval, offset);
699: if (retval) {
700: result = i_zend_is_true(retval);
701: zval_ptr_dtor(&retval);
702: }
703: }
704: } else {
705: result = 0;
706: }
707: zval_ptr_dtor(&offset);
708: } else {
709: zend_error_noreturn(E_ERROR, "Cannot use object of type %s as array", ce->name);
710: return 0;
711: }
712: return result;
713: }
714: /* }}} */
715:
716: static zval **zend_std_get_property_ptr_ptr(zval *object, zval *member, const zend_literal *key TSRMLS_DC) /* {{{ */
717: {
718: zend_object *zobj;
719: zval tmp_member;
720: zval **retval;
721: zend_property_info *property_info;
722:
723: zobj = Z_OBJ_P(object);
724:
725: if (UNEXPECTED(Z_TYPE_P(member) != IS_STRING)) {
726: tmp_member = *member;
727: zval_copy_ctor(&tmp_member);
728: convert_to_string(&tmp_member);
729: member = &tmp_member;
730: key = NULL;
731: }
732:
733: #if DEBUG_OBJECT_HANDLERS
734: fprintf(stderr, "Ptr object #%d property: %s\n", Z_OBJ_HANDLE_P(object), Z_STRVAL_P(member));
735: #endif
736:
737: property_info = zend_get_property_info_quick(zobj->ce, member, (zobj->ce->__get != NULL), key TSRMLS_CC);
738:
739: if (UNEXPECTED(!property_info) ||
740: ((EXPECTED((property_info->flags & ZEND_ACC_STATIC) == 0) &&
741: property_info->offset >= 0) ?
742: (zobj->properties ?
743: ((retval = (zval**)zobj->properties_table[property_info->offset]) == NULL) :
744: (*(retval = &zobj->properties_table[property_info->offset]) == NULL)) :
745: (UNEXPECTED(!zobj->properties) ||
746: UNEXPECTED(zend_hash_quick_find(zobj->properties, property_info->name, property_info->name_length+1, property_info->h, (void **) &retval) == FAILURE)))) {
747: zval *new_zval;
748: zend_guard *guard;
749:
750: if (!zobj->ce->__get ||
751: zend_get_property_guard(zobj, property_info, member, &guard) != SUCCESS ||
752: (property_info && guard->in_get)) {
753: /* we don't have access controls - will just add it */
754: new_zval = &EG(uninitialized_zval);
755:
756: /* zend_error(E_NOTICE, "Undefined property: %s", Z_STRVAL_P(member)); */
757: Z_ADDREF_P(new_zval);
758: if (EXPECTED((property_info->flags & ZEND_ACC_STATIC) == 0) &&
759: property_info->offset >= 0) {
760: if (!zobj->properties) {
761: zobj->properties_table[property_info->offset] = new_zval;
762: retval = &zobj->properties_table[property_info->offset];
763: } else if (zobj->properties_table[property_info->offset]) {
764: *(zval**)zobj->properties_table[property_info->offset] = new_zval;
765: retval = (zval**)zobj->properties_table[property_info->offset];
766: } else {
767: 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]);
768: retval = (zval**)zobj->properties_table[property_info->offset];
769: }
770: } else {
771: if (!zobj->properties) {
772: rebuild_object_properties(zobj);
773: }
774: zend_hash_quick_update(zobj->properties, property_info->name, property_info->name_length+1, property_info->h, &new_zval, sizeof(zval *), (void **) &retval);
775: }
776: } else {
777: /* we do have getter - fail and let it try again with usual get/set */
778: retval = NULL;
779: }
780: }
781: if (UNEXPECTED(member == &tmp_member)) {
782: zval_dtor(member);
783: }
784: return retval;
785: }
786: /* }}} */
787:
788: static void zend_std_unset_property(zval *object, zval *member, const zend_literal *key TSRMLS_DC) /* {{{ */
789: {
790: zend_object *zobj;
791: zval *tmp_member = NULL;
792: zend_property_info *property_info;
793:
794: zobj = Z_OBJ_P(object);
795:
796: if (UNEXPECTED(Z_TYPE_P(member) != IS_STRING)) {
797: ALLOC_ZVAL(tmp_member);
798: *tmp_member = *member;
799: INIT_PZVAL(tmp_member);
800: zval_copy_ctor(tmp_member);
801: convert_to_string(tmp_member);
802: member = tmp_member;
803: key = NULL;
804: }
805:
806: property_info = zend_get_property_info_quick(zobj->ce, member, (zobj->ce->__unset != NULL), key TSRMLS_CC);
807:
808: if (EXPECTED(property_info != NULL) &&
809: EXPECTED((property_info->flags & ZEND_ACC_STATIC) == 0) &&
810: !zobj->properties &&
811: property_info->offset >= 0 &&
812: EXPECTED(zobj->properties_table[property_info->offset] != NULL)) {
813: zval_ptr_dtor(&zobj->properties_table[property_info->offset]);
814: zobj->properties_table[property_info->offset] = NULL;
815: } else if (UNEXPECTED(!property_info) ||
816: !zobj->properties ||
817: UNEXPECTED(zend_hash_quick_del(zobj->properties, property_info->name, property_info->name_length+1, property_info->h) == FAILURE)) {
818: zend_guard *guard = NULL;
819:
820: if (zobj->ce->__unset &&
821: zend_get_property_guard(zobj, property_info, member, &guard) == SUCCESS &&
822: !guard->in_unset) {
823: /* have unseter - try with it! */
824: Z_ADDREF_P(object);
825: if (PZVAL_IS_REF(object)) {
826: SEPARATE_ZVAL(&object);
827: }
828: guard->in_unset = 1; /* prevent circular unsetting */
829: zend_std_call_unsetter(object, member TSRMLS_CC);
830: guard->in_unset = 0;
831: zval_ptr_dtor(&object);
832: } else if (zobj->ce->__unset && guard && guard->in_unset == 1) {
833: if (Z_STRVAL_P(member)[0] == '\0') {
834: if (Z_STRLEN_P(member) == 0) {
835: zend_error(E_ERROR, "Cannot access empty property");
836: } else {
837: zend_error(E_ERROR, "Cannot access property started with '\\0'");
838: }
839: }
840: }
841: } else if (EXPECTED(property_info != NULL) &&
842: EXPECTED((property_info->flags & ZEND_ACC_STATIC) == 0) &&
843: property_info->offset >= 0) {
844: zobj->properties_table[property_info->offset] = NULL;
845: }
846:
847: if (UNEXPECTED(tmp_member != NULL)) {
848: zval_ptr_dtor(&tmp_member);
849: }
850: }
851: /* }}} */
852:
853: static void zend_std_unset_dimension(zval *object, zval *offset TSRMLS_DC) /* {{{ */
854: {
855: zend_class_entry *ce = Z_OBJCE_P(object);
856:
857: if (instanceof_function_ex(ce, zend_ce_arrayaccess, 1 TSRMLS_CC)) {
858: SEPARATE_ARG_IF_REF(offset);
859: zend_call_method_with_1_params(&object, ce, NULL, "offsetunset", NULL, offset);
860: zval_ptr_dtor(&offset);
861: } else {
862: zend_error_noreturn(E_ERROR, "Cannot use object of type %s as array", ce->name);
863: }
864: }
865: /* }}} */
866:
867: ZEND_API void zend_std_call_user_call(INTERNAL_FUNCTION_PARAMETERS) /* {{{ */
868: {
869: zend_internal_function *func = (zend_internal_function *)EG(current_execute_data)->function_state.function;
870: zval *method_name_ptr, *method_args_ptr;
871: zval *method_result_ptr = NULL;
872: zend_class_entry *ce = Z_OBJCE_P(this_ptr);
873:
874: ALLOC_ZVAL(method_args_ptr);
875: INIT_PZVAL(method_args_ptr);
876: array_init_size(method_args_ptr, ZEND_NUM_ARGS());
877:
878: if (UNEXPECTED(zend_copy_parameters_array(ZEND_NUM_ARGS(), method_args_ptr TSRMLS_CC) == FAILURE)) {
879: zval_dtor(method_args_ptr);
880: zend_error_noreturn(E_ERROR, "Cannot get arguments for __call");
881: RETURN_FALSE;
882: }
883:
884: ALLOC_ZVAL(method_name_ptr);
885: INIT_PZVAL(method_name_ptr);
886: ZVAL_STRING(method_name_ptr, func->function_name, 0); /* no dup - it's a copy */
887:
888: /* __call handler is called with two arguments:
889: method name
890: array of method parameters
891:
892: */
893: zend_call_method_with_2_params(&this_ptr, ce, &ce->__call, ZEND_CALL_FUNC_NAME, &method_result_ptr, method_name_ptr, method_args_ptr);
894:
895: if (method_result_ptr) {
896: if (Z_ISREF_P(method_result_ptr) || Z_REFCOUNT_P(method_result_ptr) > 1) {
897: RETVAL_ZVAL(method_result_ptr, 1, 1);
898: } else {
899: RETVAL_ZVAL(method_result_ptr, 0, 1);
900: }
901: }
902:
903: /* now destruct all auxiliaries */
904: zval_ptr_dtor(&method_args_ptr);
905: zval_ptr_dtor(&method_name_ptr);
906:
907: /* destruct the function also, then - we have allocated it in get_method */
908: efree(func);
909: }
910: /* }}} */
911:
912: /* Ensures that we're allowed to call a private method.
913: * Returns the function address that should be called, or NULL
914: * if no such function exists.
915: */
916: 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) /* {{{ */
917: {
918: if (!ce) {
919: return 0;
920: }
921:
922: /* We may call a private function if:
923: * 1. The class of our object is the same as the scope, and the private
924: * function (EX(fbc)) has the same scope.
925: * 2. One of our parent classes are the same as the scope, and it contains
926: * a private function with the same name that has the same scope.
927: */
928: if (fbc->common.scope == ce && EG(scope) == ce) {
929: /* rule #1 checks out ok, allow the function call */
930: return fbc;
931: }
932:
933:
934: /* Check rule #2 */
935: ce = ce->parent;
936: while (ce) {
937: if (ce == EG(scope)) {
938: if (zend_hash_quick_find(&ce->function_table, function_name_strval, function_name_strlen+1, hash_value, (void **) &fbc)==SUCCESS
939: && fbc->op_array.fn_flags & ZEND_ACC_PRIVATE
940: && fbc->common.scope == EG(scope)) {
941: return fbc;
942: }
943: break;
944: }
945: ce = ce->parent;
946: }
947: return NULL;
948: }
949: /* }}} */
950:
951: ZEND_API int zend_check_private(zend_function *fbc, zend_class_entry *ce, char *function_name_strval, int function_name_strlen TSRMLS_DC) /* {{{ */
952: {
953: 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;
954: }
955: /* }}} */
956:
957: /* Ensures that we're allowed to call a protected method.
958: */
959: ZEND_API int zend_check_protected(zend_class_entry *ce, zend_class_entry *scope) /* {{{ */
960: {
961: zend_class_entry *fbc_scope = ce;
962:
963: /* Is the context that's calling the function, the same as one of
964: * the function's parents?
965: */
966: while (fbc_scope) {
967: if (fbc_scope==scope) {
968: return 1;
969: }
970: fbc_scope = fbc_scope->parent;
971: }
972:
973: /* Is the function's scope the same as our current object context,
974: * or any of the parents of our context?
975: */
976: while (scope) {
977: if (scope==ce) {
978: return 1;
979: }
980: scope = scope->parent;
981: }
982: return 0;
983: }
984: /* }}} */
985:
986: static inline union _zend_function *zend_get_user_call_function(zend_class_entry *ce, const char *method_name, int method_len) /* {{{ */
987: {
988: zend_internal_function *call_user_call = emalloc(sizeof(zend_internal_function));
989: call_user_call->type = ZEND_INTERNAL_FUNCTION;
990: call_user_call->module = (ce->type == ZEND_INTERNAL_CLASS) ? ce->info.internal.module : NULL;
991: call_user_call->handler = zend_std_call_user_call;
992: call_user_call->arg_info = NULL;
993: call_user_call->num_args = 0;
994: call_user_call->scope = ce;
995: call_user_call->fn_flags = ZEND_ACC_CALL_VIA_HANDLER;
996: call_user_call->function_name = estrndup(method_name, method_len);
997:
998: return (union _zend_function *)call_user_call;
999: }
1000: /* }}} */
1001:
1002: static union _zend_function *zend_std_get_method(zval **object_ptr, char *method_name, int method_len, const zend_literal *key TSRMLS_DC) /* {{{ */
1003: {
1004: zend_function *fbc;
1005: zval *object = *object_ptr;
1006: zend_object *zobj = Z_OBJ_P(object);
1007: ulong hash_value;
1008: char *lc_method_name;
1009: ALLOCA_FLAG(use_heap)
1010:
1011: if (EXPECTED(key != NULL)) {
1012: lc_method_name = Z_STRVAL(key->constant);
1013: hash_value = key->hash_value;
1014: } else {
1015: lc_method_name = do_alloca(method_len+1, use_heap);
1016: /* Create a zend_copy_str_tolower(dest, src, src_length); */
1017: zend_str_tolower_copy(lc_method_name, method_name, method_len);
1018: hash_value = zend_hash_func(lc_method_name, method_len+1);
1019: }
1020:
1021: if (UNEXPECTED(zend_hash_quick_find(&zobj->ce->function_table, lc_method_name, method_len+1, hash_value, (void **)&fbc) == FAILURE)) {
1022: if (UNEXPECTED(!key)) {
1023: free_alloca(lc_method_name, use_heap);
1024: }
1025: if (zobj->ce->__call) {
1026: return zend_get_user_call_function(zobj->ce, method_name, method_len);
1027: } else {
1028: return NULL;
1029: }
1030: }
1031:
1032: /* Check access level */
1033: if (fbc->op_array.fn_flags & ZEND_ACC_PRIVATE) {
1034: zend_function *updated_fbc;
1035:
1036: /* Ensure that if we're calling a private function, we're allowed to do so.
1037: * If we're not and __call() handler exists, invoke it, otherwise error out.
1038: */
1039: updated_fbc = zend_check_private_int(fbc, Z_OBJ_HANDLER_P(object, get_class_entry)(object TSRMLS_CC), lc_method_name, method_len, hash_value TSRMLS_CC);
1040: if (EXPECTED(updated_fbc != NULL)) {
1041: fbc = updated_fbc;
1042: } else {
1043: if (zobj->ce->__call) {
1044: fbc = zend_get_user_call_function(zobj->ce, method_name, method_len);
1045: } else {
1046: zend_error_noreturn(E_ERROR, "Call to %s method %s::%s() from context '%s'", zend_visibility_string(fbc->common.fn_flags), ZEND_FN_SCOPE_NAME(fbc), method_name, EG(scope) ? EG(scope)->name : "");
1047: }
1048: }
1049: } else {
1050: /* Ensure that we haven't overridden a private function and end up calling
1051: * the overriding public function...
1052: */
1053: if (EG(scope) &&
1054: is_derived_class(fbc->common.scope, EG(scope)) &&
1055: fbc->op_array.fn_flags & ZEND_ACC_CHANGED) {
1056: zend_function *priv_fbc;
1057:
1058: if (zend_hash_quick_find(&EG(scope)->function_table, lc_method_name, method_len+1, hash_value, (void **) &priv_fbc)==SUCCESS
1059: && priv_fbc->common.fn_flags & ZEND_ACC_PRIVATE
1060: && priv_fbc->common.scope == EG(scope)) {
1061: fbc = priv_fbc;
1062: }
1063: }
1064: if ((fbc->common.fn_flags & ZEND_ACC_PROTECTED)) {
1065: /* Ensure that if we're calling a protected function, we're allowed to do so.
1066: * If we're not and __call() handler exists, invoke it, otherwise error out.
1067: */
1068: if (UNEXPECTED(!zend_check_protected(zend_get_function_root_class(fbc), EG(scope)))) {
1069: if (zobj->ce->__call) {
1070: fbc = zend_get_user_call_function(zobj->ce, method_name, method_len);
1071: } else {
1072: zend_error_noreturn(E_ERROR, "Call to %s method %s::%s() from context '%s'", zend_visibility_string(fbc->common.fn_flags), ZEND_FN_SCOPE_NAME(fbc), method_name, EG(scope) ? EG(scope)->name : "");
1073: }
1074: }
1075: }
1076: }
1077:
1078: if (UNEXPECTED(!key)) {
1079: free_alloca(lc_method_name, use_heap);
1080: }
1081: return fbc;
1082: }
1083: /* }}} */
1084:
1085: ZEND_API void zend_std_callstatic_user_call(INTERNAL_FUNCTION_PARAMETERS) /* {{{ */
1086: {
1087: zend_internal_function *func = (zend_internal_function *)EG(current_execute_data)->function_state.function;
1088: zval *method_name_ptr, *method_args_ptr;
1089: zval *method_result_ptr = NULL;
1090: zend_class_entry *ce = EG(scope);
1091:
1092: ALLOC_ZVAL(method_args_ptr);
1093: INIT_PZVAL(method_args_ptr);
1094: array_init_size(method_args_ptr, ZEND_NUM_ARGS());
1095:
1096: if (UNEXPECTED(zend_copy_parameters_array(ZEND_NUM_ARGS(), method_args_ptr TSRMLS_CC) == FAILURE)) {
1097: zval_dtor(method_args_ptr);
1098: zend_error_noreturn(E_ERROR, "Cannot get arguments for " ZEND_CALLSTATIC_FUNC_NAME);
1099: RETURN_FALSE;
1100: }
1101:
1102: ALLOC_ZVAL(method_name_ptr);
1103: INIT_PZVAL(method_name_ptr);
1104: ZVAL_STRING(method_name_ptr, func->function_name, 0); /* no dup - it's a copy */
1105:
1106: /* __callStatic handler is called with two arguments:
1107: method name
1108: array of method parameters
1109: */
1110: zend_call_method_with_2_params(NULL, ce, &ce->__callstatic, ZEND_CALLSTATIC_FUNC_NAME, &method_result_ptr, method_name_ptr, method_args_ptr);
1111:
1112: if (method_result_ptr) {
1113: if (Z_ISREF_P(method_result_ptr) || Z_REFCOUNT_P(method_result_ptr) > 1) {
1114: RETVAL_ZVAL(method_result_ptr, 1, 1);
1115: } else {
1116: RETVAL_ZVAL(method_result_ptr, 0, 1);
1117: }
1118: }
1119:
1120: /* now destruct all auxiliaries */
1121: zval_ptr_dtor(&method_args_ptr);
1122: zval_ptr_dtor(&method_name_ptr);
1123:
1124: /* destruct the function also, then - we have allocated it in get_method */
1125: efree(func);
1126: }
1127: /* }}} */
1128:
1129: static inline union _zend_function *zend_get_user_callstatic_function(zend_class_entry *ce, const char *method_name, int method_len) /* {{{ */
1130: {
1131: zend_internal_function *callstatic_user_call = emalloc(sizeof(zend_internal_function));
1132: callstatic_user_call->type = ZEND_INTERNAL_FUNCTION;
1133: callstatic_user_call->module = (ce->type == ZEND_INTERNAL_CLASS) ? ce->info.internal.module : NULL;
1134: callstatic_user_call->handler = zend_std_callstatic_user_call;
1135: callstatic_user_call->arg_info = NULL;
1136: callstatic_user_call->num_args = 0;
1137: callstatic_user_call->scope = ce;
1138: callstatic_user_call->fn_flags = ZEND_ACC_STATIC | ZEND_ACC_PUBLIC | ZEND_ACC_CALL_VIA_HANDLER;
1139: callstatic_user_call->function_name = estrndup(method_name, method_len);
1140:
1141: return (zend_function *)callstatic_user_call;
1142: }
1143: /* }}} */
1144:
1145: /* This is not (yet?) in the API, but it belongs in the built-in objects callbacks */
1146:
1147: ZEND_API zend_function *zend_std_get_static_method(zend_class_entry *ce, const char *function_name_strval, int function_name_strlen, const zend_literal *key TSRMLS_DC) /* {{{ */
1148: {
1149: zend_function *fbc = NULL;
1150: char *lc_class_name, *lc_function_name = NULL;
1151: ulong hash_value;
1152: ALLOCA_FLAG(use_heap)
1153:
1154: if (EXPECTED(key != NULL)) {
1155: lc_function_name = Z_STRVAL(key->constant);
1156: hash_value = key->hash_value;
1157: } else {
1158: lc_function_name = do_alloca(function_name_strlen+1, use_heap);
1159: /* Create a zend_copy_str_tolower(dest, src, src_length); */
1160: zend_str_tolower_copy(lc_function_name, function_name_strval, function_name_strlen);
1161: hash_value = zend_hash_func(lc_function_name, function_name_strlen+1);
1162: }
1163:
1164: if (function_name_strlen == ce->name_length && ce->constructor) {
1165: lc_class_name = zend_str_tolower_dup(ce->name, ce->name_length);
1166: /* Only change the method to the constructor if the constructor isn't called __construct
1167: * we check for __ so we can be binary safe for lowering, we should use ZEND_CONSTRUCTOR_FUNC_NAME
1168: */
1169: if (!memcmp(lc_class_name, lc_function_name, function_name_strlen) && memcmp(ce->constructor->common.function_name, "__", sizeof("__") - 1)) {
1170: fbc = ce->constructor;
1171: }
1172: efree(lc_class_name);
1173: }
1174: if (EXPECTED(!fbc) &&
1175: UNEXPECTED(zend_hash_quick_find(&ce->function_table, lc_function_name, function_name_strlen+1, hash_value, (void **) &fbc)==FAILURE)) {
1176: if (UNEXPECTED(!key)) {
1177: free_alloca(lc_function_name, use_heap);
1178: }
1179:
1180: if (ce->__call &&
1181: EG(This) &&
1182: Z_OBJ_HT_P(EG(This))->get_class_entry &&
1183: instanceof_function(Z_OBJCE_P(EG(This)), ce TSRMLS_CC)) {
1184: return zend_get_user_call_function(ce, function_name_strval, function_name_strlen);
1185: } else if (ce->__callstatic) {
1186: return zend_get_user_callstatic_function(ce, function_name_strval, function_name_strlen);
1187: } else {
1188: return NULL;
1189: }
1190: }
1191:
1192: #if MBO_0
1193: /* right now this function is used for non static method lookup too */
1194: /* Is the function static */
1195: if (UNEXPECTED(!(fbc->common.fn_flags & ZEND_ACC_STATIC))) {
1196: zend_error_noreturn(E_ERROR, "Cannot call non static method %s::%s() without object", ZEND_FN_SCOPE_NAME(fbc), fbc->common.function_name);
1197: }
1198: #endif
1199: if (fbc->op_array.fn_flags & ZEND_ACC_PUBLIC) {
1200: /* No further checks necessary, most common case */
1201: } else if (fbc->op_array.fn_flags & ZEND_ACC_PRIVATE) {
1202: zend_function *updated_fbc;
1203:
1204: /* Ensure that if we're calling a private function, we're allowed to do so.
1205: */
1206: updated_fbc = zend_check_private_int(fbc, EG(scope), lc_function_name, function_name_strlen, hash_value TSRMLS_CC);
1207: if (EXPECTED(updated_fbc != NULL)) {
1208: fbc = updated_fbc;
1209: } else {
1210: if (ce->__callstatic) {
1211: fbc = zend_get_user_callstatic_function(ce, function_name_strval, function_name_strlen);
1212: } else {
1213: zend_error_noreturn(E_ERROR, "Call to %s method %s::%s() from context '%s'", zend_visibility_string(fbc->common.fn_flags), ZEND_FN_SCOPE_NAME(fbc), function_name_strval, EG(scope) ? EG(scope)->name : "");
1214: }
1215: }
1216: } else if ((fbc->common.fn_flags & ZEND_ACC_PROTECTED)) {
1217: /* Ensure that if we're calling a protected function, we're allowed to do so.
1218: */
1219: if (UNEXPECTED(!zend_check_protected(zend_get_function_root_class(fbc), EG(scope)))) {
1220: if (ce->__callstatic) {
1221: fbc = zend_get_user_callstatic_function(ce, function_name_strval, function_name_strlen);
1222: } else {
1223: zend_error_noreturn(E_ERROR, "Call to %s method %s::%s() from context '%s'", zend_visibility_string(fbc->common.fn_flags), ZEND_FN_SCOPE_NAME(fbc), function_name_strval, EG(scope) ? EG(scope)->name : "");
1224: }
1225: }
1226: }
1227:
1228: if (UNEXPECTED(!key)) {
1229: free_alloca(lc_function_name, use_heap);
1230: }
1231:
1232: return fbc;
1233: }
1234: /* }}} */
1235:
1236: ZEND_API zval **zend_std_get_static_property(zend_class_entry *ce, const char *property_name, int property_name_len, zend_bool silent, const zend_literal *key TSRMLS_DC) /* {{{ */
1237: {
1238: zend_property_info *property_info;
1239: ulong hash_value;
1240:
1241: if (UNEXPECTED(!key) ||
1242: (property_info = CACHED_POLYMORPHIC_PTR(key->cache_slot, ce)) == NULL) {
1243: if (EXPECTED(key != NULL)) {
1244: hash_value = key->hash_value;
1245: } else {
1246: hash_value = zend_hash_func(property_name, property_name_len+1);
1247: }
1248:
1249: if (UNEXPECTED(zend_hash_quick_find(&ce->properties_info, property_name, property_name_len+1, hash_value, (void **) &property_info)==FAILURE)) {
1250: if (!silent) {
1251: zend_error_noreturn(E_ERROR, "Access to undeclared static property: %s::$%s", ce->name, property_name);
1252: }
1253: return NULL;
1254: }
1255:
1256: #if DEBUG_OBJECT_HANDLERS
1257: zend_printf("Access type for %s::%s is %s\n", ce->name, property_name, zend_visibility_string(property_info->flags));
1258: #endif
1259:
1260: if (UNEXPECTED(!zend_verify_property_access(property_info, ce TSRMLS_CC))) {
1261: if (!silent) {
1262: zend_error_noreturn(E_ERROR, "Cannot access %s property %s::$%s", zend_visibility_string(property_info->flags), ce->name, property_name);
1263: }
1264: return NULL;
1265: }
1266:
1267: if (UNEXPECTED((property_info->flags & ZEND_ACC_STATIC) == 0)) {
1268: if (!silent) {
1269: zend_error_noreturn(E_ERROR, "Access to undeclared static property: %s::$%s", ce->name, property_name);
1270: }
1271: return NULL;
1272: }
1273:
1274: zend_update_class_constants(ce TSRMLS_CC);
1275:
1276: if (EXPECTED(key != NULL)) {
1277: CACHE_POLYMORPHIC_PTR(key->cache_slot, ce, property_info);
1278: }
1279: }
1280:
1281: if (UNEXPECTED(CE_STATIC_MEMBERS(ce) == NULL) ||
1282: UNEXPECTED(CE_STATIC_MEMBERS(ce)[property_info->offset] == NULL)) {
1283: if (!silent) {
1284: zend_error_noreturn(E_ERROR, "Access to undeclared static property: %s::$%s", ce->name, property_name);
1285: }
1286: return NULL;
1287: }
1288:
1289: return &CE_STATIC_MEMBERS(ce)[property_info->offset];
1290: }
1291: /* }}} */
1292:
1293: ZEND_API zend_bool zend_std_unset_static_property(zend_class_entry *ce, const char *property_name, int property_name_len, const zend_literal *key TSRMLS_DC) /* {{{ */
1294: {
1295: zend_error_noreturn(E_ERROR, "Attempt to unset static property %s::$%s", ce->name, property_name);
1296: return 0;
1297: }
1298: /* }}} */
1299:
1300: ZEND_API union _zend_function *zend_std_get_constructor(zval *object TSRMLS_DC) /* {{{ */
1301: {
1302: zend_object *zobj = Z_OBJ_P(object);
1303: zend_function *constructor = zobj->ce->constructor;
1304:
1305: if (constructor) {
1306: if (constructor->op_array.fn_flags & ZEND_ACC_PUBLIC) {
1307: /* No further checks necessary */
1308: } else if (constructor->op_array.fn_flags & ZEND_ACC_PRIVATE) {
1309: /* Ensure that if we're calling a private function, we're allowed to do so.
1310: */
1311: if (UNEXPECTED(constructor->common.scope != EG(scope))) {
1312: if (EG(scope)) {
1313: zend_error_noreturn(E_ERROR, "Call to private %s::%s() from context '%s'", constructor->common.scope->name, constructor->common.function_name, EG(scope)->name);
1314: } else {
1315: zend_error_noreturn(E_ERROR, "Call to private %s::%s() from invalid context", constructor->common.scope->name, constructor->common.function_name);
1316: }
1317: }
1318: } else if ((constructor->common.fn_flags & ZEND_ACC_PROTECTED)) {
1319: /* Ensure that if we're calling a protected function, we're allowed to do so.
1320: * Constructors only have prototype if they are defined by an interface but
1321: * it is the compilers responsibility to take care of the prototype.
1322: */
1323: if (UNEXPECTED(!zend_check_protected(zend_get_function_root_class(constructor), EG(scope)))) {
1324: if (EG(scope)) {
1325: zend_error_noreturn(E_ERROR, "Call to protected %s::%s() from context '%s'", constructor->common.scope->name, constructor->common.function_name, EG(scope)->name);
1326: } else {
1327: zend_error_noreturn(E_ERROR, "Call to protected %s::%s() from invalid context", constructor->common.scope->name, constructor->common.function_name);
1328: }
1329: }
1330: }
1331: }
1332:
1333: return constructor;
1334: }
1335: /* }}} */
1336:
1337: int zend_compare_symbol_tables_i(HashTable *ht1, HashTable *ht2 TSRMLS_DC);
1338:
1339: static int zend_std_compare_objects(zval *o1, zval *o2 TSRMLS_DC) /* {{{ */
1340: {
1341: zend_object *zobj1, *zobj2;
1342:
1343: zobj1 = Z_OBJ_P(o1);
1344: zobj2 = Z_OBJ_P(o2);
1345:
1346: if (zobj1->ce != zobj2->ce) {
1347: return 1; /* different classes */
1348: }
1349: if (!zobj1->properties && !zobj2->properties) {
1350: int i;
1351:
1352: Z_OBJ_PROTECT_RECURSION(o1);
1353: Z_OBJ_PROTECT_RECURSION(o2);
1354: for (i = 0; i < zobj1->ce->default_properties_count; i++) {
1355: if (zobj1->properties_table[i]) {
1356: if (zobj2->properties_table[i]) {
1357: zval result;
1358:
1359: if (compare_function(&result, zobj1->properties_table[i], zobj2->properties_table[i] TSRMLS_CC)==FAILURE) {
1360: Z_OBJ_UNPROTECT_RECURSION(o1);
1361: Z_OBJ_UNPROTECT_RECURSION(o2);
1362: return 1;
1363: }
1364: if (Z_LVAL(result) != 0) {
1365: Z_OBJ_UNPROTECT_RECURSION(o1);
1366: Z_OBJ_UNPROTECT_RECURSION(o2);
1367: return Z_LVAL(result);
1368: }
1369: } else {
1370: Z_OBJ_UNPROTECT_RECURSION(o1);
1371: Z_OBJ_UNPROTECT_RECURSION(o2);
1372: return 1;
1373: }
1374: } else {
1375: if (zobj2->properties_table[i]) {
1376: Z_OBJ_UNPROTECT_RECURSION(o1);
1377: Z_OBJ_UNPROTECT_RECURSION(o2);
1378: return 1;
1379: } else {
1380: Z_OBJ_UNPROTECT_RECURSION(o1);
1381: Z_OBJ_UNPROTECT_RECURSION(o2);
1382: return 0;
1383: }
1384: }
1385: }
1386: Z_OBJ_UNPROTECT_RECURSION(o1);
1387: Z_OBJ_UNPROTECT_RECURSION(o2);
1388: return 0;
1389: } else {
1390: if (!zobj1->properties) {
1391: rebuild_object_properties(zobj1);
1392: }
1393: if (!zobj2->properties) {
1394: rebuild_object_properties(zobj2);
1395: }
1396: return zend_compare_symbol_tables_i(zobj1->properties, zobj2->properties TSRMLS_CC);
1397: }
1398: }
1399: /* }}} */
1400:
1401: static int zend_std_has_property(zval *object, zval *member, int has_set_exists, const zend_literal *key TSRMLS_DC) /* {{{ */
1402: {
1403: zend_object *zobj;
1404: int result;
1405: zval **value = NULL;
1406: zval *tmp_member = NULL;
1407: zend_property_info *property_info;
1408:
1409: zobj = Z_OBJ_P(object);
1410:
1411: if (UNEXPECTED(Z_TYPE_P(member) != IS_STRING)) {
1412: ALLOC_ZVAL(tmp_member);
1413: *tmp_member = *member;
1414: INIT_PZVAL(tmp_member);
1415: zval_copy_ctor(tmp_member);
1416: convert_to_string(tmp_member);
1417: member = tmp_member;
1418: key = NULL;
1419: }
1420:
1421: #if DEBUG_OBJECT_HANDLERS
1422: fprintf(stderr, "Read object #%d property: %s\n", Z_OBJ_HANDLE_P(object), Z_STRVAL_P(member));
1423: #endif
1424:
1425: property_info = zend_get_property_info_quick(zobj->ce, member, 1, key TSRMLS_CC);
1426:
1427: if (UNEXPECTED(!property_info) ||
1428: ((EXPECTED((property_info->flags & ZEND_ACC_STATIC) == 0) &&
1429: property_info->offset >= 0) ?
1430: (zobj->properties ?
1431: ((value = (zval**)zobj->properties_table[property_info->offset]) == NULL) :
1432: (*(value = &zobj->properties_table[property_info->offset]) == NULL)) :
1433: (UNEXPECTED(!zobj->properties) ||
1434: UNEXPECTED(zend_hash_quick_find(zobj->properties, property_info->name, property_info->name_length+1, property_info->h, (void **) &value) == FAILURE)))) {
1435: zend_guard *guard;
1436:
1437: result = 0;
1438: if ((has_set_exists != 2) &&
1439: zobj->ce->__isset &&
1440: zend_get_property_guard(zobj, property_info, member, &guard) == SUCCESS &&
1441: !guard->in_isset) {
1442: zval *rv;
1443:
1444: /* have issetter - try with it! */
1445: Z_ADDREF_P(object);
1446: if (PZVAL_IS_REF(object)) {
1447: SEPARATE_ZVAL(&object);
1448: }
1449: guard->in_isset = 1; /* prevent circular getting */
1450: rv = zend_std_call_issetter(object, member TSRMLS_CC);
1451: if (rv) {
1452: result = zend_is_true(rv);
1453: zval_ptr_dtor(&rv);
1454: if (has_set_exists && result) {
1455: if (EXPECTED(!EG(exception)) && zobj->ce->__get && !guard->in_get) {
1456: guard->in_get = 1;
1457: rv = zend_std_call_getter(object, member TSRMLS_CC);
1458: guard->in_get = 0;
1459: if (rv) {
1460: Z_ADDREF_P(rv);
1461: result = i_zend_is_true(rv);
1462: zval_ptr_dtor(&rv);
1463: } else {
1464: result = 0;
1465: }
1466: } else {
1467: result = 0;
1468: }
1469: }
1470: }
1471: guard->in_isset = 0;
1472: zval_ptr_dtor(&object);
1473: }
1474: } else {
1475: switch (has_set_exists) {
1476: case 0:
1477: result = (Z_TYPE_PP(value) != IS_NULL);
1478: break;
1479: default:
1480: result = zend_is_true(*value);
1481: break;
1482: case 2:
1483: result = 1;
1484: break;
1485: }
1486: }
1487:
1488: if (UNEXPECTED(tmp_member != NULL)) {
1489: zval_ptr_dtor(&tmp_member);
1490: }
1491: return result;
1492: }
1493: /* }}} */
1494:
1495: zend_class_entry *zend_std_object_get_class(const zval *object TSRMLS_DC) /* {{{ */
1496: {
1497: zend_object *zobj;
1498: zobj = Z_OBJ_P(object);
1499:
1500: return zobj->ce;
1501: }
1502: /* }}} */
1503:
1504: int zend_std_object_get_class_name(const zval *object, const char **class_name, zend_uint *class_name_len, int parent TSRMLS_DC) /* {{{ */
1505: {
1506: zend_object *zobj;
1507: zend_class_entry *ce;
1508: zobj = Z_OBJ_P(object);
1509:
1510: if (parent) {
1511: if (!zobj->ce->parent) {
1512: return FAILURE;
1513: }
1514: ce = zobj->ce->parent;
1515: } else {
1516: ce = zobj->ce;
1517: }
1518:
1519: *class_name_len = ce->name_length;
1520: *class_name = estrndup(ce->name, ce->name_length);
1521: return SUCCESS;
1522: }
1523: /* }}} */
1524:
1525: ZEND_API int zend_std_cast_object_tostring(zval *readobj, zval *writeobj, int type TSRMLS_DC) /* {{{ */
1526: {
1527: zval *retval;
1528: zend_class_entry *ce;
1529:
1530: switch (type) {
1531: case IS_STRING:
1532: ce = Z_OBJCE_P(readobj);
1533: if (ce->__tostring &&
1534: (zend_call_method_with_0_params(&readobj, ce, &ce->__tostring, "__tostring", &retval) || EG(exception))) {
1535: if (UNEXPECTED(EG(exception) != NULL)) {
1536: if (retval) {
1537: zval_ptr_dtor(&retval);
1538: }
1539: EG(exception) = NULL;
1540: zend_error_noreturn(E_ERROR, "Method %s::__toString() must not throw an exception", ce->name);
1541: return FAILURE;
1542: }
1543: if (EXPECTED(Z_TYPE_P(retval) == IS_STRING)) {
1544: INIT_PZVAL(writeobj);
1545: if (readobj == writeobj) {
1546: zval_dtor(readobj);
1547: }
1548: ZVAL_ZVAL(writeobj, retval, 1, 1);
1549: if (Z_TYPE_P(writeobj) != type) {
1550: convert_to_explicit_type(writeobj, type);
1551: }
1552: return SUCCESS;
1553: } else {
1554: zval_ptr_dtor(&retval);
1555: INIT_PZVAL(writeobj);
1556: if (readobj == writeobj) {
1557: zval_dtor(readobj);
1558: }
1559: ZVAL_EMPTY_STRING(writeobj);
1560: zend_error(E_RECOVERABLE_ERROR, "Method %s::__toString() must return a string value", ce->name);
1561: return SUCCESS;
1562: }
1563: }
1564: return FAILURE;
1565: case IS_BOOL:
1566: INIT_PZVAL(writeobj);
1567: ZVAL_BOOL(writeobj, 1);
1568: return SUCCESS;
1569: case IS_LONG:
1570: ce = Z_OBJCE_P(readobj);
1571: zend_error(E_NOTICE, "Object of class %s could not be converted to int", ce->name);
1572: INIT_PZVAL(writeobj);
1573: if (readobj == writeobj) {
1574: zval_dtor(readobj);
1575: }
1576: ZVAL_LONG(writeobj, 1);
1577: return SUCCESS;
1578: case IS_DOUBLE:
1579: ce = Z_OBJCE_P(readobj);
1580: zend_error(E_NOTICE, "Object of class %s could not be converted to double", ce->name);
1581: INIT_PZVAL(writeobj);
1582: if (readobj == writeobj) {
1583: zval_dtor(readobj);
1584: }
1585: ZVAL_DOUBLE(writeobj, 1);
1586: return SUCCESS;
1587: default:
1588: INIT_PZVAL(writeobj);
1589: Z_TYPE_P(writeobj) = IS_NULL;
1590: break;
1591: }
1592: return FAILURE;
1593: }
1594: /* }}} */
1595:
1596: int zend_std_get_closure(zval *obj, zend_class_entry **ce_ptr, zend_function **fptr_ptr, zval **zobj_ptr TSRMLS_DC) /* {{{ */
1597: {
1598: zend_class_entry *ce;
1599: if (Z_TYPE_P(obj) != IS_OBJECT) {
1600: return FAILURE;
1601: }
1602:
1603: ce = Z_OBJCE_P(obj);
1604:
1605: if (zend_hash_find(&ce->function_table, ZEND_INVOKE_FUNC_NAME, sizeof(ZEND_INVOKE_FUNC_NAME), (void**)fptr_ptr) == FAILURE) {
1606: return FAILURE;
1607: }
1608:
1609: *ce_ptr = ce;
1610: if ((*fptr_ptr)->common.fn_flags & ZEND_ACC_STATIC) {
1611: if (zobj_ptr) {
1612: *zobj_ptr = NULL;
1613: }
1614: } else {
1615: if (zobj_ptr) {
1616: *zobj_ptr = obj;
1617: }
1618: }
1619: return SUCCESS;
1620: }
1621: /* }}} */
1622:
1623: ZEND_API zend_object_handlers std_object_handlers = {
1624: zend_objects_store_add_ref, /* add_ref */
1625: zend_objects_store_del_ref, /* del_ref */
1626: zend_objects_clone_obj, /* clone_obj */
1627:
1628: zend_std_read_property, /* read_property */
1629: zend_std_write_property, /* write_property */
1630: zend_std_read_dimension, /* read_dimension */
1631: zend_std_write_dimension, /* write_dimension */
1632: zend_std_get_property_ptr_ptr, /* get_property_ptr_ptr */
1633: NULL, /* get */
1634: NULL, /* set */
1635: zend_std_has_property, /* has_property */
1636: zend_std_unset_property, /* unset_property */
1637: zend_std_has_dimension, /* has_dimension */
1638: zend_std_unset_dimension, /* unset_dimension */
1639: zend_std_get_properties, /* get_properties */
1640: zend_std_get_method, /* get_method */
1641: NULL, /* call_method */
1642: zend_std_get_constructor, /* get_constructor */
1643: zend_std_object_get_class, /* get_class_entry */
1644: zend_std_object_get_class_name, /* get_class_name */
1645: zend_std_compare_objects, /* compare_objects */
1646: zend_std_cast_object_tostring, /* cast_object */
1647: NULL, /* count_elements */
1648: NULL, /* get_debug_info */
1649: zend_std_get_closure, /* get_closure */
1650: zend_std_get_gc, /* get_gc */
1651: };
1652:
1653: /*
1654: * Local variables:
1655: * tab-width: 4
1656: * c-basic-offset: 4
1657: * indent-tabs-mode: t
1658: * End:
1659: */
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