diff options
Diffstat (limited to 'ext/standard/var_unserializer.re')
| -rw-r--r-- | ext/standard/var_unserializer.re | 631 |
1 files changed, 0 insertions, 631 deletions
diff --git a/ext/standard/var_unserializer.re b/ext/standard/var_unserializer.re deleted file mode 100644 index b877f8c27e..0000000000 --- a/ext/standard/var_unserializer.re +++ /dev/null @@ -1,631 +0,0 @@ -/* - +----------------------------------------------------------------------+ - | PHP Version 5 | - +----------------------------------------------------------------------+ - | Copyright (c) 1997-2005 The PHP Group | - +----------------------------------------------------------------------+ - | This source file is subject to version 3.0 of the PHP license, | - | that is bundled with this package in the file LICENSE, and is | - | available through the world-wide-web at the following url: | - | http://www.php.net/license/3_0.txt. | - | If you did not receive a copy of the PHP license and are unable to | - | obtain it through the world-wide-web, please send a note to | - | license@php.net so we can mail you a copy immediately. | - +----------------------------------------------------------------------+ - | Author: Sascha Schumann <sascha@schumann.cx> | - +----------------------------------------------------------------------+ -*/ - -/* $Id$ */ - -#include "php.h" -#include "ext/standard/php_var.h" -#include "php_incomplete_class.h" - -/* {{{ reference-handling for unserializer: var_* */ -#define VAR_ENTRIES_MAX 1024 - -typedef struct { - zval *data[VAR_ENTRIES_MAX]; - long used_slots; - void *next; -} var_entries; - -static inline void var_push(php_unserialize_data_t *var_hashx, zval **rval) -{ - var_entries *var_hash = var_hashx->first, *prev = NULL; - - while (var_hash && var_hash->used_slots == VAR_ENTRIES_MAX) { - prev = var_hash; - var_hash = var_hash->next; - } - - if (!var_hash) { - var_hash = emalloc(sizeof(var_entries)); - var_hash->used_slots = 0; - var_hash->next = 0; - - if (!var_hashx->first) - var_hashx->first = var_hash; - else - prev->next = var_hash; - } - - var_hash->data[var_hash->used_slots++] = *rval; -} - -static inline void var_push_dtor(php_unserialize_data_t *var_hashx, zval **rval) -{ - var_entries *var_hash = var_hashx->first_dtor, *prev = NULL; - - while (var_hash && var_hash->used_slots == VAR_ENTRIES_MAX) { - prev = var_hash; - var_hash = var_hash->next; - } - - if (!var_hash) { - var_hash = emalloc(sizeof(var_entries)); - var_hash->used_slots = 0; - var_hash->next = 0; - - if (!var_hashx->first_dtor) - var_hashx->first_dtor = var_hash; - else - prev->next = var_hash; - } - - (*rval)->refcount++; - var_hash->data[var_hash->used_slots++] = *rval; -} - -PHPAPI void var_replace(php_unserialize_data_t *var_hashx, zval *ozval, zval **nzval) -{ - long i; - var_entries *var_hash = var_hashx->first; - - while (var_hash) { - for (i = 0; i < var_hash->used_slots; i++) { - if (var_hash->data[i] == ozval) { - var_hash->data[i] = *nzval; - /* do not break here */ - } - } - var_hash = var_hash->next; - } -} - -static int var_access(php_unserialize_data_t *var_hashx, long id, zval ***store) -{ - var_entries *var_hash = var_hashx->first; - - while (id >= VAR_ENTRIES_MAX && var_hash && var_hash->used_slots == VAR_ENTRIES_MAX) { - var_hash = var_hash->next; - id -= VAR_ENTRIES_MAX; - } - - if (!var_hash) return !SUCCESS; - - if (id < 0 || id >= var_hash->used_slots) return !SUCCESS; - - *store = &var_hash->data[id]; - - return SUCCESS; -} - -PHPAPI void var_destroy(php_unserialize_data_t *var_hashx) -{ - void *next; - long i; - var_entries *var_hash = var_hashx->first; - - while (var_hash) { - next = var_hash->next; - efree(var_hash); - var_hash = next; - } - - var_hash = var_hashx->first_dtor; - - while (var_hash) { - for (i = 0; i < var_hash->used_slots; i++) { - zval_ptr_dtor(&var_hash->data[i]); - } - next = var_hash->next; - efree(var_hash); - var_hash = next; - } -} - -/* }}} */ - -#define YYFILL(n) do { } while (0) -#define YYCTYPE unsigned char -#define YYCURSOR cursor -#define YYLIMIT limit -#define YYMARKER marker - - -/*!re2c -uiv = [+]? [0-9]+; -iv = [+-]? [0-9]+; -nv = [+-]? ([0-9]* "." [0-9]+|[0-9]+ "." [0-9]*); -nvexp = (iv | nv) [eE] [+-]? iv; -any = [\000-\377]; -object = [OC]; -*/ - - - -static inline long parse_iv2(const unsigned char *p, const unsigned char **q) -{ - char cursor; - long result = 0; - int neg = 0; - - switch (*p) { - case '-': - neg++; - /* fall-through */ - case '+': - p++; - } - - while (1) { - cursor = (char)*p; - if (cursor >= '0' && cursor <= '9') { - result = result * 10 + cursor - '0'; - } else { - break; - } - p++; - } - if (q) *q = p; - if (neg) return -result; - return result; -} - -static inline long parse_iv(const unsigned char *p) -{ - return parse_iv2(p, NULL); -} - -/* no need to check for length - re2c already did */ -static inline size_t parse_uiv(const unsigned char *p) -{ - unsigned char cursor; - size_t result = 0; - - if (*p == '+') { - p++; - } - - while (1) { - cursor = *p; - if (cursor >= '0' && cursor <= '9') { - result = result * 10 + (size_t)(cursor - (unsigned char)'0'); - } else { - break; - } - p++; - } - return result; -} - -#define UNSERIALIZE_PARAMETER zval **rval, const unsigned char **p, const unsigned char *max, php_unserialize_data_t *var_hash TSRMLS_DC -#define UNSERIALIZE_PASSTHRU rval, p, max, var_hash TSRMLS_CC - -static inline int process_nested_data(UNSERIALIZE_PARAMETER, HashTable *ht, long elements) -{ - while (elements-- > 0) { - zval *key, *data, **old_data; - - ALLOC_INIT_ZVAL(key); - - if (!php_var_unserialize(&key, p, max, NULL TSRMLS_CC)) { - zval_dtor(key); - FREE_ZVAL(key); - return 0; - } - - if (Z_TYPE_P(key) != IS_LONG && Z_TYPE_P(key) != IS_STRING) { - zval_dtor(key); - FREE_ZVAL(key); - return 0; - } - - ALLOC_INIT_ZVAL(data); - - if (!php_var_unserialize(&data, p, max, var_hash TSRMLS_CC)) { - zval_dtor(key); - FREE_ZVAL(key); - zval_dtor(data); - FREE_ZVAL(data); - return 0; - } - - switch (Z_TYPE_P(key)) { - case IS_LONG: - if (zend_hash_index_find(ht, Z_LVAL_P(key), (void **)&old_data)==SUCCESS) { - var_push_dtor(var_hash, old_data); - } - zend_hash_index_update(ht, Z_LVAL_P(key), &data, sizeof(data), NULL); - break; - case IS_STRING: - if (zend_hash_find(ht, Z_STRVAL_P(key), Z_STRLEN_P(key) + 1, (void **)&old_data)==SUCCESS) { - var_push_dtor(var_hash, old_data); - } - zend_hash_update(ht, Z_STRVAL_P(key), Z_STRLEN_P(key) + 1, &data, sizeof(data), NULL); - break; - } - - zval_dtor(key); - FREE_ZVAL(key); - - if (elements && *(*p-1) != ';' && *(*p-1) != '}') { - (*p)--; - return 0; - } - } - - return 1; -} - -static inline int finish_nested_data(UNSERIALIZE_PARAMETER) -{ - if (*((*p)++) == '}') - return 1; - -#if SOMETHING_NEW_MIGHT_LEAD_TO_CRASH_ENABLE_IF_YOU_ARE_BRAVE - zval_ptr_dtor(rval); -#endif - return 0; -} - -static inline int object_custom(UNSERIALIZE_PARAMETER, zend_class_entry *ce) -{ - long datalen; - - if(ce->unserialize == NULL) { - zend_error(E_WARNING, "Class %s has no unserializer", ce->name); - return 0; - } - - datalen = parse_iv2((*p) + 2, p); - - (*p) += 2; - - if(datalen < 0 || (*p) + datalen >= max) { - zend_error(E_WARNING, "Insufficient data for unserializing - %ld required, %d present", datalen, max - (*p)); - return 0; - } - - if(ce->unserialize(rval, ce, (const unsigned char*)*p, datalen, (zend_unserialize_data *)var_hash TSRMLS_CC) != SUCCESS) { - return 0; - } - - (*p) += datalen; - - return finish_nested_data(UNSERIALIZE_PASSTHRU); -} - -static inline long object_common1(UNSERIALIZE_PARAMETER, zend_class_entry *ce) -{ - long elements; - - elements = parse_iv2((*p) + 2, p); - - (*p) += 2; - - object_init_ex(*rval, ce); - return elements; -} - -static inline int object_common2(UNSERIALIZE_PARAMETER, long elements) -{ - zval *retval_ptr = NULL; - zval fname; - - if (!process_nested_data(UNSERIALIZE_PASSTHRU, Z_OBJPROP_PP(rval), elements)) { - return 0; - } - - if (Z_OBJCE_PP(rval) != PHP_IC_ENTRY && - zend_hash_exists(&Z_OBJCE_PP(rval)->function_table, "__wakeup", sizeof("__wakeup"))) { - INIT_PZVAL(&fname); - ZVAL_STRINGL(&fname, "__wakeup", sizeof("__wakeup") - 1, 0); - call_user_function_ex(CG(function_table), rval, &fname, &retval_ptr, 0, 0, 1, NULL TSRMLS_CC); - } - - if (retval_ptr) - zval_ptr_dtor(&retval_ptr); - - return finish_nested_data(UNSERIALIZE_PASSTHRU); - -} - -PHPAPI int php_var_unserialize(UNSERIALIZE_PARAMETER) -{ - const unsigned char *cursor, *limit, *marker, *start; - zval **rval_ref; - - limit = cursor = *p; - - if (var_hash && cursor[0] != 'R') { - var_push(var_hash, rval); - } - - start = cursor; - - - -/*!re2c - -"R:" iv ";" { - long id; - - *p = YYCURSOR; - if (!var_hash) return 0; - - id = parse_iv(start + 2) - 1; - if (id == -1 || var_access(var_hash, id, &rval_ref) != SUCCESS) { - return 0; - } - - if (*rval != NULL) { - zval_ptr_dtor(rval); - } - *rval = *rval_ref; - (*rval)->refcount++; - (*rval)->is_ref = 1; - - return 1; -} - -"r:" iv ";" { - long id; - - *p = YYCURSOR; - if (!var_hash) return 0; - - id = parse_iv(start + 2) - 1; - if (id == -1 || var_access(var_hash, id, &rval_ref) != SUCCESS) { - return 0; - } - - if (*rval == *rval_ref) return 0; - - if (*rval != NULL) { - zval_ptr_dtor(rval); - } - *rval = *rval_ref; - (*rval)->refcount++; - (*rval)->is_ref = 0; - - return 1; -} - -"N;" { - *p = YYCURSOR; - INIT_PZVAL(*rval); - ZVAL_NULL(*rval); - return 1; -} - -"b:" [01] ";" { - *p = YYCURSOR; - INIT_PZVAL(*rval); - ZVAL_BOOL(*rval, parse_iv(start + 2)); - return 1; -} - -"i:" iv ";" { - *p = YYCURSOR; - INIT_PZVAL(*rval); - ZVAL_LONG(*rval, parse_iv(start + 2)); - return 1; -} - -"d:" ("NAN" | "-"? "INF") ";" { - *p = YYCURSOR; - INIT_PZVAL(*rval); - - if (!strncmp(start + 2, "NAN", 3)) { - ZVAL_DOUBLE(*rval, php_get_nan()); - } else if (!strncmp(start + 2, "INF", 3)) { - ZVAL_DOUBLE(*rval, php_get_inf()); - } else if (!strncmp(start + 2, "-INF", 4)) { - ZVAL_DOUBLE(*rval, -php_get_inf()); - } - - return 1; -} - -"d:" (iv | nv | nvexp) ";" { - *p = YYCURSOR; - INIT_PZVAL(*rval); - ZVAL_DOUBLE(*rval, zend_strtod((const char *)start + 2, NULL)); - return 1; -} - -"s:" uiv ":" ["] { - size_t len, maxlen; - char *str; - - len = parse_uiv(start + 2); - maxlen = max - YYCURSOR; - if (maxlen < len) { - *p = start + 2; - return 0; - } - - str = (char*)YYCURSOR; - - YYCURSOR += len; - - if (*(YYCURSOR) != '"') { - *p = YYCURSOR; - return 0; - } - - YYCURSOR += 2; - *p = YYCURSOR; - - INIT_PZVAL(*rval); - ZVAL_STRINGL(*rval, str, len, 1); - return 1; -} - -"a:" uiv ":" "{" { - long elements = parse_iv(start + 2); - /* use iv() not uiv() in order to check data range */ - *p = YYCURSOR; - - if (elements < 0) { - return 0; - } - - INIT_PZVAL(*rval); - Z_TYPE_PP(rval) = IS_ARRAY; - ALLOC_HASHTABLE(Z_ARRVAL_PP(rval)); - - zend_hash_init(Z_ARRVAL_PP(rval), elements + 1, NULL, ZVAL_PTR_DTOR, 0); - - if (!process_nested_data(UNSERIALIZE_PASSTHRU, Z_ARRVAL_PP(rval), elements)) { - return 0; - } - - return finish_nested_data(UNSERIALIZE_PASSTHRU); -} - -"o:" iv ":" ["] { - - INIT_PZVAL(*rval); - - return object_common2(UNSERIALIZE_PASSTHRU, - object_common1(UNSERIALIZE_PASSTHRU, ZEND_STANDARD_CLASS_DEF_PTR)); -} - -object ":" uiv ":" ["] { - size_t len, len2, len3, maxlen; - long elements; - char *class_name; - zend_class_entry *ce; - zend_class_entry **pce; - int incomplete_class = 0; - - int custom_object = 0; - - zval *user_func; - zval *retval_ptr; - zval **args[1]; - zval *arg_func_name; - - if(*start == 'C') { - custom_object = 1; - } - - INIT_PZVAL(*rval); - len2 = len = parse_uiv(start + 2); - maxlen = max - YYCURSOR; - if (maxlen < len || len == 0) { - *p = start + 2; - return 0; - } - - class_name = (char*)YYCURSOR; - - YYCURSOR += len; - - if (*(YYCURSOR) != '"') { - *p = YYCURSOR; - return 0; - } - if (*(YYCURSOR+1) != ':') { - *p = YYCURSOR+1; - return 0; - } - - 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"); - if (len3 != len) - { - *p = YYCURSOR + len3 - len; - return 0; - } - - class_name = estrndup(class_name, len); - - do { - /* Try to find class directly */ - if (zend_lookup_class(class_name, len2, &pce TSRMLS_CC) == SUCCESS) { - ce = *pce; - break; - } - - /* Check for unserialize callback */ - if ((PG(unserialize_callback_func) == NULL) || (PG(unserialize_callback_func)[0] == '\0')) { - incomplete_class = 1; - ce = PHP_IC_ENTRY; - break; - } - - /* Call unserialize callback */ - MAKE_STD_ZVAL(user_func); - ZVAL_STRING(user_func, PG(unserialize_callback_func), 1); - args[0] = &arg_func_name; - MAKE_STD_ZVAL(arg_func_name); - ZVAL_STRING(arg_func_name, class_name, 1); - if (call_user_function_ex(CG(function_table), NULL, user_func, &retval_ptr, 1, args, 0, NULL TSRMLS_CC) != SUCCESS) { - php_error_docref(NULL TSRMLS_CC, E_WARNING, "defined (%s) but not found", user_func->value.str.val); - incomplete_class = 1; - ce = PHP_IC_ENTRY; - zval_ptr_dtor(&user_func); - zval_ptr_dtor(&arg_func_name); - break; - } - if (retval_ptr) { - zval_ptr_dtor(&retval_ptr); - } - - /* The callback function may have defined the class */ - if (zend_lookup_class(class_name, len2, &pce TSRMLS_CC) == SUCCESS) { - ce = *pce; - } else { - php_error_docref(NULL TSRMLS_CC, E_WARNING, "Function %s() hasn't defined the class it was called for", user_func->value.str.val); - incomplete_class = 1; - ce = PHP_IC_ENTRY; - } - - zval_ptr_dtor(&user_func); - zval_ptr_dtor(&arg_func_name); - break; - } while (1); - - *p = YYCURSOR; - - if(custom_object) { - efree(class_name); - return object_custom(UNSERIALIZE_PASSTHRU, ce); - } - - elements = object_common1(UNSERIALIZE_PASSTHRU, ce); - - if (incomplete_class) { - php_store_class_name(*rval, class_name, len2); - } - efree(class_name); - - return object_common2(UNSERIALIZE_PASSTHRU, elements); -} - -"}" { - /* this is the case where we have less data than planned */ - php_error_docref(NULL TSRMLS_CC, E_NOTICE, "Unexpected end of serialized data"); - return 0; /* not sure if it should be 0 or 1 here? */ -} - -any { return 0; } - -*/ - - return 0; -} |