1: /*
2: +----------------------------------------------------------------------+
3: | PHP Version 5 |
4: +----------------------------------------------------------------------+
5: | Copyright (c) 1997-2013 The PHP Group |
6: +----------------------------------------------------------------------+
7: | This source file is subject to version 3.01 of the PHP 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.php.net/license/3_01.txt |
11: | If you did not receive a copy of the PHP license and are unable to |
12: | obtain it through the world-wide-web, please send a note to |
13: | license@php.net so we can mail you a copy immediately. |
14: +----------------------------------------------------------------------+
15: | Author: Sascha Schumann <sascha@schumann.cx> |
16: +----------------------------------------------------------------------+
17: */
18:
19: /* $Id: var_unserializer.re,v 1.1.1.5 2014/06/15 20:03:57 misho Exp $ */
20:
21: #include "php.h"
22: #include "ext/standard/php_var.h"
23: #include "php_incomplete_class.h"
24:
25: /* {{{ reference-handling for unserializer: var_* */
26: #define VAR_ENTRIES_MAX 1024
27: #define VAR_ENTRIES_DBG 0
28:
29: typedef struct {
30: zval *data[VAR_ENTRIES_MAX];
31: long used_slots;
32: void *next;
33: } var_entries;
34:
35: static inline void var_push(php_unserialize_data_t *var_hashx, zval **rval)
36: {
37: var_entries *var_hash = (*var_hashx)->last;
38: #if VAR_ENTRIES_DBG
39: fprintf(stderr, "var_push(%ld): %d\n", var_hash?var_hash->used_slots:-1L, Z_TYPE_PP(rval));
40: #endif
41:
42: if (!var_hash || var_hash->used_slots == VAR_ENTRIES_MAX) {
43: var_hash = emalloc(sizeof(var_entries));
44: var_hash->used_slots = 0;
45: var_hash->next = 0;
46:
47: if (!(*var_hashx)->first) {
48: (*var_hashx)->first = var_hash;
49: } else {
50: ((var_entries *) (*var_hashx)->last)->next = var_hash;
51: }
52:
53: (*var_hashx)->last = var_hash;
54: }
55:
56: var_hash->data[var_hash->used_slots++] = *rval;
57: }
58:
59: PHPAPI void var_push_dtor(php_unserialize_data_t *var_hashx, zval **rval)
60: {
61: var_entries *var_hash = (*var_hashx)->last_dtor;
62: #if VAR_ENTRIES_DBG
63: fprintf(stderr, "var_push_dtor(%ld): %d\n", var_hash?var_hash->used_slots:-1L, Z_TYPE_PP(rval));
64: #endif
65:
66: if (!var_hash || var_hash->used_slots == VAR_ENTRIES_MAX) {
67: var_hash = emalloc(sizeof(var_entries));
68: var_hash->used_slots = 0;
69: var_hash->next = 0;
70:
71: if (!(*var_hashx)->first_dtor) {
72: (*var_hashx)->first_dtor = var_hash;
73: } else {
74: ((var_entries *) (*var_hashx)->last_dtor)->next = var_hash;
75: }
76:
77: (*var_hashx)->last_dtor = var_hash;
78: }
79:
80: Z_ADDREF_PP(rval);
81: var_hash->data[var_hash->used_slots++] = *rval;
82: }
83:
84: PHPAPI void var_push_dtor_no_addref(php_unserialize_data_t *var_hashx, zval **rval)
85: {
86: var_entries *var_hash = (*var_hashx)->last_dtor;
87: #if VAR_ENTRIES_DBG
88: fprintf(stderr, "var_push_dtor_no_addref(%ld): %d (%d)\n", var_hash?var_hash->used_slots:-1L, Z_TYPE_PP(rval), Z_REFCOUNT_PP(rval));
89: #endif
90:
91: if (!var_hash || var_hash->used_slots == VAR_ENTRIES_MAX) {
92: var_hash = emalloc(sizeof(var_entries));
93: var_hash->used_slots = 0;
94: var_hash->next = 0;
95:
96: if (!(*var_hashx)->first_dtor) {
97: (*var_hashx)->first_dtor = var_hash;
98: } else {
99: ((var_entries *) (*var_hashx)->last_dtor)->next = var_hash;
100: }
101:
102: (*var_hashx)->last_dtor = var_hash;
103: }
104:
105: var_hash->data[var_hash->used_slots++] = *rval;
106: }
107:
108: PHPAPI void var_replace(php_unserialize_data_t *var_hashx, zval *ozval, zval **nzval)
109: {
110: long i;
111: var_entries *var_hash = (*var_hashx)->first;
112: #if VAR_ENTRIES_DBG
113: fprintf(stderr, "var_replace(%ld): %d\n", var_hash?var_hash->used_slots:-1L, Z_TYPE_PP(nzval));
114: #endif
115:
116: while (var_hash) {
117: for (i = 0; i < var_hash->used_slots; i++) {
118: if (var_hash->data[i] == ozval) {
119: var_hash->data[i] = *nzval;
120: /* do not break here */
121: }
122: }
123: var_hash = var_hash->next;
124: }
125: }
126:
127: static int var_access(php_unserialize_data_t *var_hashx, long id, zval ***store)
128: {
129: var_entries *var_hash = (*var_hashx)->first;
130: #if VAR_ENTRIES_DBG
131: fprintf(stderr, "var_access(%ld): %ld\n", var_hash?var_hash->used_slots:-1L, id);
132: #endif
133:
134: while (id >= VAR_ENTRIES_MAX && var_hash && var_hash->used_slots == VAR_ENTRIES_MAX) {
135: var_hash = var_hash->next;
136: id -= VAR_ENTRIES_MAX;
137: }
138:
139: if (!var_hash) return !SUCCESS;
140:
141: if (id < 0 || id >= var_hash->used_slots) return !SUCCESS;
142:
143: *store = &var_hash->data[id];
144:
145: return SUCCESS;
146: }
147:
148: PHPAPI void var_destroy(php_unserialize_data_t *var_hashx)
149: {
150: void *next;
151: long i;
152: var_entries *var_hash = (*var_hashx)->first;
153: #if VAR_ENTRIES_DBG
154: fprintf(stderr, "var_destroy(%ld)\n", var_hash?var_hash->used_slots:-1L);
155: #endif
156:
157: while (var_hash) {
158: next = var_hash->next;
159: efree(var_hash);
160: var_hash = next;
161: }
162:
163: var_hash = (*var_hashx)->first_dtor;
164:
165: while (var_hash) {
166: for (i = 0; i < var_hash->used_slots; i++) {
167: zval_ptr_dtor(&var_hash->data[i]);
168: }
169: next = var_hash->next;
170: efree(var_hash);
171: var_hash = next;
172: }
173: }
174:
175: /* }}} */
176:
177: static char *unserialize_str(const unsigned char **p, size_t *len, size_t maxlen)
178: {
179: size_t i, j;
180: char *str = safe_emalloc(*len, 1, 1);
181: unsigned char *end = *(unsigned char **)p+maxlen;
182:
183: if (end < *p) {
184: efree(str);
185: return NULL;
186: }
187:
188: for (i = 0; i < *len; i++) {
189: if (*p >= end) {
190: efree(str);
191: return NULL;
192: }
193: if (**p != '\\') {
194: str[i] = (char)**p;
195: } else {
196: unsigned char ch = 0;
197:
198: for (j = 0; j < 2; j++) {
199: (*p)++;
200: if (**p >= '0' && **p <= '9') {
201: ch = (ch << 4) + (**p -'0');
202: } else if (**p >= 'a' && **p <= 'f') {
203: ch = (ch << 4) + (**p -'a'+10);
204: } else if (**p >= 'A' && **p <= 'F') {
205: ch = (ch << 4) + (**p -'A'+10);
206: } else {
207: efree(str);
208: return NULL;
209: }
210: }
211: str[i] = (char)ch;
212: }
213: (*p)++;
214: }
215: str[i] = 0;
216: *len = i;
217: return str;
218: }
219:
220: #define YYFILL(n) do { } while (0)
221: #define YYCTYPE unsigned char
222: #define YYCURSOR cursor
223: #define YYLIMIT limit
224: #define YYMARKER marker
225:
226:
227: /*!re2c
228: uiv = [+]? [0-9]+;
229: iv = [+-]? [0-9]+;
230: nv = [+-]? ([0-9]* "." [0-9]+|[0-9]+ "." [0-9]*);
231: nvexp = (iv | nv) [eE] [+-]? iv;
232: any = [\000-\377];
233: object = [OC];
234: */
235:
236:
237:
238: static inline long parse_iv2(const unsigned char *p, const unsigned char **q)
239: {
240: char cursor;
241: long result = 0;
242: int neg = 0;
243:
244: switch (*p) {
245: case '-':
246: neg++;
247: /* fall-through */
248: case '+':
249: p++;
250: }
251:
252: while (1) {
253: cursor = (char)*p;
254: if (cursor >= '0' && cursor <= '9') {
255: result = result * 10 + (size_t)(cursor - (unsigned char)'0');
256: } else {
257: break;
258: }
259: p++;
260: }
261: if (q) *q = p;
262: if (neg) return -result;
263: return result;
264: }
265:
266: static inline long parse_iv(const unsigned char *p)
267: {
268: return parse_iv2(p, NULL);
269: }
270:
271: /* no need to check for length - re2c already did */
272: static inline size_t parse_uiv(const unsigned char *p)
273: {
274: unsigned char cursor;
275: size_t result = 0;
276:
277: if (*p == '+') {
278: p++;
279: }
280:
281: while (1) {
282: cursor = *p;
283: if (cursor >= '0' && cursor <= '9') {
284: result = result * 10 + (size_t)(cursor - (unsigned char)'0');
285: } else {
286: break;
287: }
288: p++;
289: }
290: return result;
291: }
292:
293: #define UNSERIALIZE_PARAMETER zval **rval, const unsigned char **p, const unsigned char *max, php_unserialize_data_t *var_hash TSRMLS_DC
294: #define UNSERIALIZE_PASSTHRU rval, p, max, var_hash TSRMLS_CC
295:
296: static inline int process_nested_data(UNSERIALIZE_PARAMETER, HashTable *ht, long elements, int objprops)
297: {
298: while (elements-- > 0) {
299: zval *key, *data, **old_data;
300:
301: ALLOC_INIT_ZVAL(key);
302:
303: if (!php_var_unserialize(&key, p, max, NULL TSRMLS_CC)) {
304: zval_dtor(key);
305: FREE_ZVAL(key);
306: return 0;
307: }
308:
309: if (Z_TYPE_P(key) != IS_LONG && Z_TYPE_P(key) != IS_STRING) {
310: zval_dtor(key);
311: FREE_ZVAL(key);
312: return 0;
313: }
314:
315: ALLOC_INIT_ZVAL(data);
316:
317: if (!php_var_unserialize(&data, p, max, var_hash TSRMLS_CC)) {
318: zval_dtor(key);
319: FREE_ZVAL(key);
320: zval_dtor(data);
321: FREE_ZVAL(data);
322: return 0;
323: }
324:
325: if (!objprops) {
326: switch (Z_TYPE_P(key)) {
327: case IS_LONG:
328: if (zend_hash_index_find(ht, Z_LVAL_P(key), (void **)&old_data)==SUCCESS) {
329: var_push_dtor(var_hash, old_data);
330: }
331: zend_hash_index_update(ht, Z_LVAL_P(key), &data, sizeof(data), NULL);
332: break;
333: case IS_STRING:
334: if (zend_symtable_find(ht, Z_STRVAL_P(key), Z_STRLEN_P(key) + 1, (void **)&old_data)==SUCCESS) {
335: var_push_dtor(var_hash, old_data);
336: }
337: zend_symtable_update(ht, Z_STRVAL_P(key), Z_STRLEN_P(key) + 1, &data, sizeof(data), NULL);
338: break;
339: }
340: } else {
341: /* object properties should include no integers */
342: convert_to_string(key);
343: zend_hash_update(ht, Z_STRVAL_P(key), Z_STRLEN_P(key) + 1, &data,
344: sizeof data, NULL);
345: }
346:
347: zval_dtor(key);
348: FREE_ZVAL(key);
349:
350: if (elements && *(*p-1) != ';' && *(*p-1) != '}') {
351: (*p)--;
352: return 0;
353: }
354: }
355:
356: return 1;
357: }
358:
359: static inline int finish_nested_data(UNSERIALIZE_PARAMETER)
360: {
361: if (*((*p)++) == '}')
362: return 1;
363:
364: #if SOMETHING_NEW_MIGHT_LEAD_TO_CRASH_ENABLE_IF_YOU_ARE_BRAVE
365: zval_ptr_dtor(rval);
366: #endif
367: return 0;
368: }
369:
370: static inline int object_custom(UNSERIALIZE_PARAMETER, zend_class_entry *ce)
371: {
372: long datalen;
373:
374: datalen = parse_iv2((*p) + 2, p);
375:
376: (*p) += 2;
377:
378: if (datalen < 0 || (*p) + datalen >= max) {
379: zend_error(E_WARNING, "Insufficient data for unserializing - %ld required, %ld present", datalen, (long)(max - (*p)));
380: return 0;
381: }
382:
383: if (ce->unserialize == NULL) {
384: zend_error(E_WARNING, "Class %s has no unserializer", ce->name);
385: object_init_ex(*rval, ce);
386: } else if (ce->unserialize(rval, ce, (const unsigned char*)*p, datalen, (zend_unserialize_data *)var_hash TSRMLS_CC) != SUCCESS) {
387: return 0;
388: }
389:
390: (*p) += datalen;
391:
392: return finish_nested_data(UNSERIALIZE_PASSTHRU);
393: }
394:
395: static inline long object_common1(UNSERIALIZE_PARAMETER, zend_class_entry *ce)
396: {
397: long elements;
398:
399: elements = parse_iv2((*p) + 2, p);
400:
401: (*p) += 2;
402:
403: if (ce->serialize == NULL) {
404: object_init_ex(*rval, ce);
405: } else {
406: /* If this class implements Serializable, it should not land here but in object_custom(). The passed string
407: obviously doesn't descend from the regular serializer. */
408: zend_error(E_WARNING, "Erroneous data format for unserializing '%s'", ce->name);
409: return 0;
410: }
411:
412: return elements;
413: }
414:
415: #ifdef PHP_WIN32
416: # pragma optimize("", off)
417: #endif
418: static inline int object_common2(UNSERIALIZE_PARAMETER, long elements)
419: {
420: zval *retval_ptr = NULL;
421: zval fname;
422:
423: if (Z_TYPE_PP(rval) != IS_OBJECT) {
424: return 0;
425: }
426:
427: if (!process_nested_data(UNSERIALIZE_PASSTHRU, Z_OBJPROP_PP(rval), elements, 1)) {
428: return 0;
429: }
430:
431: if (Z_OBJCE_PP(rval) != PHP_IC_ENTRY &&
432: zend_hash_exists(&Z_OBJCE_PP(rval)->function_table, "__wakeup", sizeof("__wakeup"))) {
433: INIT_PZVAL(&fname);
434: ZVAL_STRINGL(&fname, "__wakeup", sizeof("__wakeup") - 1, 0);
435: BG(serialize_lock)++;
436: call_user_function_ex(CG(function_table), rval, &fname, &retval_ptr, 0, 0, 1, NULL TSRMLS_CC);
437: BG(serialize_lock)--;
438: }
439:
440: if (retval_ptr) {
441: zval_ptr_dtor(&retval_ptr);
442: }
443:
444: if (EG(exception)) {
445: return 0;
446: }
447:
448: return finish_nested_data(UNSERIALIZE_PASSTHRU);
449:
450: }
451: #ifdef PHP_WIN32
452: # pragma optimize("", on)
453: #endif
454:
455: PHPAPI int php_var_unserialize(UNSERIALIZE_PARAMETER)
456: {
457: const unsigned char *cursor, *limit, *marker, *start;
458: zval **rval_ref;
459:
460: limit = max;
461: cursor = *p;
462:
463: if (YYCURSOR >= YYLIMIT) {
464: return 0;
465: }
466:
467: if (var_hash && cursor[0] != 'R') {
468: var_push(var_hash, rval);
469: }
470:
471: start = cursor;
472:
473:
474:
475: /*!re2c
476:
477: "R:" iv ";" {
478: long id;
479:
480: *p = YYCURSOR;
481: if (!var_hash) return 0;
482:
483: id = parse_iv(start + 2) - 1;
484: if (id == -1 || var_access(var_hash, id, &rval_ref) != SUCCESS) {
485: return 0;
486: }
487:
488: if (*rval != NULL) {
489: zval_ptr_dtor(rval);
490: }
491: *rval = *rval_ref;
492: Z_ADDREF_PP(rval);
493: Z_SET_ISREF_PP(rval);
494:
495: return 1;
496: }
497:
498: "r:" iv ";" {
499: long id;
500:
501: *p = YYCURSOR;
502: if (!var_hash) return 0;
503:
504: id = parse_iv(start + 2) - 1;
505: if (id == -1 || var_access(var_hash, id, &rval_ref) != SUCCESS) {
506: return 0;
507: }
508:
509: if (*rval == *rval_ref) return 0;
510:
511: if (*rval != NULL) {
512: var_push_dtor_no_addref(var_hash, rval);
513: }
514: *rval = *rval_ref;
515: Z_ADDREF_PP(rval);
516: Z_UNSET_ISREF_PP(rval);
517:
518: return 1;
519: }
520:
521: "N;" {
522: *p = YYCURSOR;
523: INIT_PZVAL(*rval);
524: ZVAL_NULL(*rval);
525: return 1;
526: }
527:
528: "b:" [01] ";" {
529: *p = YYCURSOR;
530: INIT_PZVAL(*rval);
531: ZVAL_BOOL(*rval, parse_iv(start + 2));
532: return 1;
533: }
534:
535: "i:" iv ";" {
536: #if SIZEOF_LONG == 4
537: int digits = YYCURSOR - start - 3;
538:
539: if (start[2] == '-' || start[2] == '+') {
540: digits--;
541: }
542:
543: /* Use double for large long values that were serialized on a 64-bit system */
544: if (digits >= MAX_LENGTH_OF_LONG - 1) {
545: if (digits == MAX_LENGTH_OF_LONG - 1) {
546: int cmp = strncmp(YYCURSOR - MAX_LENGTH_OF_LONG, long_min_digits, MAX_LENGTH_OF_LONG - 1);
547:
548: if (!(cmp < 0 || (cmp == 0 && start[2] == '-'))) {
549: goto use_double;
550: }
551: } else {
552: goto use_double;
553: }
554: }
555: #endif
556: *p = YYCURSOR;
557: INIT_PZVAL(*rval);
558: ZVAL_LONG(*rval, parse_iv(start + 2));
559: return 1;
560: }
561:
562: "d:" ("NAN" | "-"? "INF") ";" {
563: *p = YYCURSOR;
564: INIT_PZVAL(*rval);
565:
566: if (!strncmp(start + 2, "NAN", 3)) {
567: ZVAL_DOUBLE(*rval, php_get_nan());
568: } else if (!strncmp(start + 2, "INF", 3)) {
569: ZVAL_DOUBLE(*rval, php_get_inf());
570: } else if (!strncmp(start + 2, "-INF", 4)) {
571: ZVAL_DOUBLE(*rval, -php_get_inf());
572: }
573:
574: return 1;
575: }
576:
577: "d:" (iv | nv | nvexp) ";" {
578: #if SIZEOF_LONG == 4
579: use_double:
580: #endif
581: *p = YYCURSOR;
582: INIT_PZVAL(*rval);
583: ZVAL_DOUBLE(*rval, zend_strtod((const char *)start + 2, NULL));
584: return 1;
585: }
586:
587: "s:" uiv ":" ["] {
588: size_t len, maxlen;
589: char *str;
590:
591: len = parse_uiv(start + 2);
592: maxlen = max - YYCURSOR;
593: if (maxlen < len) {
594: *p = start + 2;
595: return 0;
596: }
597:
598: str = (char*)YYCURSOR;
599:
600: YYCURSOR += len;
601:
602: if (*(YYCURSOR) != '"') {
603: *p = YYCURSOR;
604: return 0;
605: }
606:
607: YYCURSOR += 2;
608: *p = YYCURSOR;
609:
610: INIT_PZVAL(*rval);
611: ZVAL_STRINGL(*rval, str, len, 1);
612: return 1;
613: }
614:
615: "S:" uiv ":" ["] {
616: size_t len, maxlen;
617: char *str;
618:
619: len = parse_uiv(start + 2);
620: maxlen = max - YYCURSOR;
621: if (maxlen < len) {
622: *p = start + 2;
623: return 0;
624: }
625:
626: if ((str = unserialize_str(&YYCURSOR, &len, maxlen)) == NULL) {
627: return 0;
628: }
629:
630: if (*(YYCURSOR) != '"') {
631: efree(str);
632: *p = YYCURSOR;
633: return 0;
634: }
635:
636: YYCURSOR += 2;
637: *p = YYCURSOR;
638:
639: INIT_PZVAL(*rval);
640: ZVAL_STRINGL(*rval, str, len, 0);
641: return 1;
642: }
643:
644: "a:" uiv ":" "{" {
645: long elements = parse_iv(start + 2);
646: /* use iv() not uiv() in order to check data range */
647: *p = YYCURSOR;
648:
649: if (elements < 0) {
650: return 0;
651: }
652:
653: INIT_PZVAL(*rval);
654:
655: array_init_size(*rval, elements);
656:
657: if (!process_nested_data(UNSERIALIZE_PASSTHRU, Z_ARRVAL_PP(rval), elements, 0)) {
658: return 0;
659: }
660:
661: return finish_nested_data(UNSERIALIZE_PASSTHRU);
662: }
663:
664: "o:" iv ":" ["] {
665:
666: INIT_PZVAL(*rval);
667:
668: return object_common2(UNSERIALIZE_PASSTHRU,
669: object_common1(UNSERIALIZE_PASSTHRU, ZEND_STANDARD_CLASS_DEF_PTR));
670: }
671:
672: object ":" uiv ":" ["] {
673: size_t len, len2, len3, maxlen;
674: long elements;
675: char *class_name;
676: zend_class_entry *ce;
677: zend_class_entry **pce;
678: int incomplete_class = 0;
679:
680: int custom_object = 0;
681:
682: zval *user_func;
683: zval *retval_ptr;
684: zval **args[1];
685: zval *arg_func_name;
686:
687: if (*start == 'C') {
688: custom_object = 1;
689: }
690:
691: INIT_PZVAL(*rval);
692: len2 = len = parse_uiv(start + 2);
693: maxlen = max - YYCURSOR;
694: if (maxlen < len || len == 0) {
695: *p = start + 2;
696: return 0;
697: }
698:
699: class_name = (char*)YYCURSOR;
700:
701: YYCURSOR += len;
702:
703: if (*(YYCURSOR) != '"') {
704: *p = YYCURSOR;
705: return 0;
706: }
707: if (*(YYCURSOR+1) != ':') {
708: *p = YYCURSOR+1;
709: return 0;
710: }
711:
712: len3 = strspn(class_name, "0123456789_abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ\177\200\201\202\203\204\205\206\207\210\211\212\213\214\215\216\217\220\221\222\223\224\225\226\227\230\231\232\233\234\235\236\237\240\241\242\243\244\245\246\247\250\251\252\253\254\255\256\257\260\261\262\263\264\265\266\267\270\271\272\273\274\275\276\277\300\301\302\303\304\305\306\307\310\311\312\313\314\315\316\317\320\321\322\323\324\325\326\327\330\331\332\333\334\335\336\337\340\341\342\343\344\345\346\347\350\351\352\353\354\355\356\357\360\361\362\363\364\365\366\367\370\371\372\373\374\375\376\377\\");
713: if (len3 != len)
714: {
715: *p = YYCURSOR + len3 - len;
716: return 0;
717: }
718:
719: class_name = estrndup(class_name, len);
720:
721: do {
722: /* Try to find class directly */
723: BG(serialize_lock)++;
724: if (zend_lookup_class(class_name, len2, &pce TSRMLS_CC) == SUCCESS) {
725: BG(serialize_lock)--;
726: if (EG(exception)) {
727: efree(class_name);
728: return 0;
729: }
730: ce = *pce;
731: break;
732: }
733: BG(serialize_lock)--;
734:
735: if (EG(exception)) {
736: efree(class_name);
737: return 0;
738: }
739:
740: /* Check for unserialize callback */
741: if ((PG(unserialize_callback_func) == NULL) || (PG(unserialize_callback_func)[0] == '\0')) {
742: incomplete_class = 1;
743: ce = PHP_IC_ENTRY;
744: break;
745: }
746:
747: /* Call unserialize callback */
748: MAKE_STD_ZVAL(user_func);
749: ZVAL_STRING(user_func, PG(unserialize_callback_func), 1);
750: args[0] = &arg_func_name;
751: MAKE_STD_ZVAL(arg_func_name);
752: ZVAL_STRING(arg_func_name, class_name, 1);
753: BG(serialize_lock)++;
754: if (call_user_function_ex(CG(function_table), NULL, user_func, &retval_ptr, 1, args, 0, NULL TSRMLS_CC) != SUCCESS) {
755: BG(serialize_lock)--;
756: if (EG(exception)) {
757: efree(class_name);
758: zval_ptr_dtor(&user_func);
759: zval_ptr_dtor(&arg_func_name);
760: return 0;
761: }
762: php_error_docref(NULL TSRMLS_CC, E_WARNING, "defined (%s) but not found", user_func->value.str.val);
763: incomplete_class = 1;
764: ce = PHP_IC_ENTRY;
765: zval_ptr_dtor(&user_func);
766: zval_ptr_dtor(&arg_func_name);
767: break;
768: }
769: BG(serialize_lock)--;
770: if (retval_ptr) {
771: zval_ptr_dtor(&retval_ptr);
772: }
773: if (EG(exception)) {
774: efree(class_name);
775: zval_ptr_dtor(&user_func);
776: zval_ptr_dtor(&arg_func_name);
777: return 0;
778: }
779:
780: /* The callback function may have defined the class */
781: if (zend_lookup_class(class_name, len2, &pce TSRMLS_CC) == SUCCESS) {
782: ce = *pce;
783: } else {
784: php_error_docref(NULL TSRMLS_CC, E_WARNING, "Function %s() hasn't defined the class it was called for", user_func->value.str.val);
785: incomplete_class = 1;
786: ce = PHP_IC_ENTRY;
787: }
788:
789: zval_ptr_dtor(&user_func);
790: zval_ptr_dtor(&arg_func_name);
791: break;
792: } while (1);
793:
794: *p = YYCURSOR;
795:
796: if (custom_object) {
797: int ret;
798:
799: ret = object_custom(UNSERIALIZE_PASSTHRU, ce);
800:
801: if (ret && incomplete_class) {
802: php_store_class_name(*rval, class_name, len2);
803: }
804: efree(class_name);
805: return ret;
806: }
807:
808: elements = object_common1(UNSERIALIZE_PASSTHRU, ce);
809:
810: if (incomplete_class) {
811: php_store_class_name(*rval, class_name, len2);
812: }
813: efree(class_name);
814:
815: return object_common2(UNSERIALIZE_PASSTHRU, elements);
816: }
817:
818: "}" {
819: /* this is the case where we have less data than planned */
820: php_error_docref(NULL TSRMLS_CC, E_NOTICE, "Unexpected end of serialized data");
821: return 0; /* not sure if it should be 0 or 1 here? */
822: }
823:
824: any { return 0; }
825:
826: */
827:
828: return 0;
829: }
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