Commit message: Fixed bug #68044: Integer overflow in unserialize() (32-bits only)
CVE: CVE-2014-3669
CWE: CWE-189
Vulnerability description: Integer overflow in the object_custom function in ext/standard/var_unserializer.c in PHP before 5.4.34, 5.5.x before 5.5.18, and 5.6.x before 5.6.2 allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via an argument to the unserialize function that triggers calculation of a large length value.

Project: php-src
File: var_unserializer.c

PHPAPI int php_var_unserialize(UNSERIALIZE_PARAMETER)
{
	const unsigned char *cursor, *limit, *marker, *start;
	zval **rval_ref;

	limit = max;
	cursor = *p;
	
	if (YYCURSOR >= YYLIMIT) {
		return 0;
	}
	
	if (var_hash && cursor[0] != 'R') {
		var_push(var_hash, rval);
	}

	start = cursor;

	
	

#line 478 "ext/standard/var_unserializer.c"
{
	YYCTYPE yych;
	static const unsigned char yybm[] = {
		  0,   0,   0,   0,   0,   0,   0,   0, 
		  0,   0,   0,   0,   0,   0,   0,   0, 
		  0,   0,   0,   0,   0,   0,   0,   0, 
		  0,   0,   0,   0,   0,   0,   0,   0, 
		  0,   0,   0,   0,   0,   0,   0,   0, 
		  0,   0,   0,   0,   0,   0,   0,   0, 
		128, 128, 128, 128, 128, 128, 128, 128, 
		128, 128,   0,   0,   0,   0,   0,   0, 
		  0,   0,   0,   0,   0,   0,   0,   0, 
		  0,   0,   0,   0,   0,   0,   0,   0, 
		  0,   0,   0,   0,   0,   0,   0,   0, 
		  0,   0,   0,   0,   0,   0,   0,   0, 
		  0,   0,   0,   0,   0,   0,   0,   0, 
		  0,   0,   0,   0,   0,   0,   0,   0, 
		  0,   0,   0,   0,   0,   0,   0,   0, 
		  0,   0,   0,   0,   0,   0,   0,   0, 
		  0,   0,   0,   0,   0,   0,   0,   0, 
		  0,   0,   0,   0,   0,   0,   0,   0, 
		  0,   0,   0,   0,   0,   0,   0,   0, 
		  0,   0,   0,   0,   0,   0,   0,   0, 
		  0,   0,   0,   0,   0,   0,   0,   0, 
		  0,   0,   0,   0,   0,   0,   0,   0, 
		  0,   0,   0,   0,   0,   0,   0,   0, 
		  0,   0,   0,   0,   0,   0,   0,   0, 
		  0,   0,   0,   0,   0,   0,   0,   0, 
		  0,   0,   0,   0,   0,   0,   0,   0, 
		  0,   0,   0,   0,   0,   0,   0,   0, 
		  0,   0,   0,   0,   0,   0,   0,   0, 
		  0,   0,   0,   0,   0,   0,   0,   0, 
		  0,   0,   0,   0,   0,   0,   0,   0, 
		  0,   0,   0,   0,   0,   0,   0,   0, 
		  0,   0,   0,   0,   0,   0,   0,   0, 
	};

	if ((YYLIMIT - YYCURSOR) < 7) YYFILL(7);
	yych = *YYCURSOR;
	switch (yych) {
	case 'C':
	case 'O':	goto yy13;
	case 'N':	goto yy5;
	case 'R':	goto yy2;
	case 'S':	goto yy10;
	case 'a':	goto yy11;
	case 'b':	goto yy6;
	case 'd':	goto yy8;
	case 'i':	goto yy7;
	case 'o':	goto yy12;
	case 'r':	goto yy4;
	case 's':	goto yy9;
	case '}':	goto yy14;
	default:	goto yy16;
	}
yy2:
	yych = *(YYMARKER = ++YYCURSOR);
	if (yych == ':') goto yy95;
yy3:
#line 829 "ext/standard/var_unserializer.re"
	{ return 0; }
#line 540 "ext/standard/var_unserializer.c"
yy4:
	yych = *(YYMARKER = ++YYCURSOR);
	if (yych == ':') goto yy89;
	goto yy3;
yy5:
	yych = *++YYCURSOR;
	if (yych == ';') goto yy87;
	goto yy3;
yy6:
	yych = *(YYMARKER = ++YYCURSOR);
	if (yych == ':') goto yy83;
	goto yy3;
yy7:
	yych = *(YYMARKER = ++YYCURSOR);
	if (yych == ':') goto yy77;
	goto yy3;
yy8:
	yych = *(YYMARKER = ++YYCURSOR);
	if (yych == ':') goto yy53;
	goto yy3;
yy9:
	yych = *(YYMARKER = ++YYCURSOR);
	if (yych == ':') goto yy46;
	goto yy3;
yy10:
	yych = *(YYMARKER = ++YYCURSOR);
	if (yych == ':') goto yy39;
	goto yy3;
yy11:
	yych = *(YYMARKER = ++YYCURSOR);
	if (yych == ':') goto yy32;
	goto yy3;
yy12:
	yych = *(YYMARKER = ++YYCURSOR);
	if (yych == ':') goto yy25;
	goto yy3;
yy13:
	yych = *(YYMARKER = ++YYCURSOR);
	if (yych == ':') goto yy17;
	goto yy3;
yy14:
	++YYCURSOR;
#line 823 "ext/standard/var_unserializer.re"
	{
	/* 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? */
}
#line 589 "ext/standard/var_unserializer.c"
yy16:
	yych = *++YYCURSOR;
	goto yy3;
yy17:
	yych = *++YYCURSOR;
	if (yybm[0+yych] & 128) {
		goto yy20;
	}
	if (yych == '+') goto yy19;
yy18:
	YYCURSOR = YYMARKER;
	goto yy3;
yy19:
	yych = *++YYCURSOR;
	if (yybm[0+yych] & 128) {
		goto yy20;
	}
	goto yy18;
yy20:
	++YYCURSOR;
	if ((YYLIMIT - YYCURSOR) < 2) YYFILL(2);
	yych = *YYCURSOR;
	if (yybm[0+yych] & 128) {
		goto yy20;
	}
	if (yych != ':') goto yy18;
	yych = *++YYCURSOR;
	if (yych != '"') goto yy18;
	++YYCURSOR;
#line 677 "ext/standard/var_unserializer.re"
	{
	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 */
		BG(serialize_lock)++;
		if (zend_lookup_class(class_name, len2, &pce TSRMLS_CC) == SUCCESS) {
			BG(serialize_lock)--;
			if (EG(exception)) {
				efree(class_name);
				return 0;
			}
			ce = *pce;
			break;
		}
		BG(serialize_lock)--;

		if (EG(exception)) {
			efree(class_name);
			return 0;
		}
		
		/* 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);
		BG(serialize_lock)++;
		if (call_user_function_ex(CG(function_table), NULL, user_func, &retval_ptr, 1, args, 0, NULL TSRMLS_CC) != SUCCESS) {
			BG(serialize_lock)--;
			if (EG(exception)) {
				efree(class_name);
				zval_ptr_dtor(&user_func);
				zval_ptr_dtor(&arg_func_name);
				return 0;
			}
			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;
		}
		BG(serialize_lock)--;
		if (retval_ptr) {
			zval_ptr_dtor(&retval_ptr);
		}
		if (EG(exception)) {
			efree(class_name);
			zval_ptr_dtor(&user_func);
			zval_ptr_dtor(&arg_func_name);
			return 0;
		}
		
		/* 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) {
		int ret;

		ret = object_custom(UNSERIALIZE_PASSTHRU, ce);

		if (ret && incomplete_class) {
			php_store_class_name(*rval, class_name, len2);
		}
		efree(class_name);
		return ret;
	}
	
	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);
}
#line 765 "ext/standard/var_unserializer.c"
yy25:
	yych = *++YYCURSOR;
	if (yych <= ',') {
		if (yych != '+') goto yy18;
	} else {
		if (yych <= '-') goto yy26;
		if (yych <= '/') goto yy18;
		if (yych <= '9') goto yy27;
		goto yy18;
	}
yy26:
	yych = *++YYCURSOR;
	if (yych <= '/') goto yy18;
	if (yych >= ':') goto yy18;
yy27:
	++YYCURSOR;
	if ((YYLIMIT - YYCURSOR) < 2) YYFILL(2);
	yych = *YYCURSOR;
	if (yych <= '/') goto yy18;
	if (yych <= '9') goto yy27;
	if (yych >= ';') goto yy18;
	yych = *++YYCURSOR;
	if (yych != '"') goto yy18;
	++YYCURSOR;
#line 669 "ext/standard/var_unserializer.re"
	{

	INIT_PZVAL(*rval);
	
	return object_common2(UNSERIALIZE_PASSTHRU,
			object_common1(UNSERIALIZE_PASSTHRU, ZEND_STANDARD_CLASS_DEF_PTR));
}
#line 798 "ext/standard/var_unserializer.c"
yy32:
	yych = *++YYCURSOR;
	if (yych == '+') goto yy33;
	if (yych <= '/') goto yy18;
	if (yych <= '9') goto yy34;
	goto yy18;
yy33:
	yych = *++YYCURSOR;
	if (yych <= '/') goto yy18;
	if (yych >= ':') goto yy18;
yy34:
	++YYCURSOR;
	if ((YYLIMIT - YYCURSOR) < 2) YYFILL(2);
	yych = *YYCURSOR;
	if (yych <= '/') goto yy18;
	if (yych <= '9') goto yy34;
	if (yych >= ';') goto yy18;
	yych = *++YYCURSOR;
	if (yych != '{') goto yy18;
	++YYCURSOR;
#line 649 "ext/standard/var_unserializer.re"
	{
	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);

	array_init_size(*rval, elements);

	if (!process_nested_data(UNSERIALIZE_PASSTHRU, Z_ARRVAL_PP(rval), elements, 0)) {
		return 0;
	}

	return finish_nested_data(UNSERIALIZE_PASSTHRU);
}
#line 839 "ext/standard/var_unserializer.c"
yy39:
	yych = *++YYCURSOR;
	if (yych == '+') goto yy40;
	if (yych <= '/') goto yy18;
	if (yych <= '9') goto yy41;
	goto yy18;
yy40:
	yych = *++YYCURSOR;
	if (yych <= '/') goto yy18;
	if (yych >= ':') goto yy18;
yy41:
	++YYCURSOR;
	if ((YYLIMIT - YYCURSOR) < 2) YYFILL(2);
	yych = *YYCURSOR;
	if (yych <= '/') goto yy18;
	if (yych <= '9') goto yy41;
	if (yych >= ';') goto yy18;
	yych = *++YYCURSOR;
	if (yych != '"') goto yy18;
	++YYCURSOR;
#line 620 "ext/standard/var_unserializer.re"
	{
	size_t len, maxlen;
	char *str;

	len = parse_uiv(start + 2);
	maxlen = max - YYCURSOR;
	if (maxlen < len) {
		*p = start + 2;
		return 0;
	}

	if ((str = unserialize_str(&YYCURSOR, &len, maxlen)) == NULL) {
		return 0;
	}

	if (*(YYCURSOR) != '"') {
		efree(str);
		*p = YYCURSOR;
		return 0;
	}

	YYCURSOR += 2;
	*p = YYCURSOR;

	INIT_PZVAL(*rval);
	ZVAL_STRINGL(*rval, str, len, 0);
	return 1;
}
#line 889 "ext/standard/var_unserializer.c"
yy46:
	yych = *++YYCURSOR;
	if (yych == '+') goto yy47;
	if (yych <= '/') goto yy18;
	if (yych <= '9') goto yy48;
	goto yy18;
yy47:
	yych = *++YYCURSOR;
	if (yych <= '/') goto yy18;
	if (yych >= ':') goto yy18;
yy48:
	++YYCURSOR;
	if ((YYLIMIT - YYCURSOR) < 2) YYFILL(2);
	yych = *YYCURSOR;
	if (yych <= '/') goto yy18;
	if (yych <= '9') goto yy48;
	if (yych >= ';') goto yy18;
	yych = *++YYCURSOR;
	if (yych != '"') goto yy18;
	++YYCURSOR;
#line 592 "ext/standard/var_unserializer.re"
	{
	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;
}
#line 938 "ext/standard/var_unserializer.c"
yy53:
	yych = *++YYCURSOR;
	if (yych <= '/') {
		if (yych <= ',') {
			if (yych == '+') goto yy57;
			goto yy18;
		} else {
			if (yych <= '-') goto yy55;
			if (yych <= '.') goto yy60;
			goto yy18;
		}
	} else {
		if (yych <= 'I') {
			if (yych <= '9') goto yy58;
			if (yych <= 'H') goto yy18;
			goto yy56;
		} else {
			if (yych != 'N') goto yy18;
		}
	}
	yych = *++YYCURSOR;
	if (yych == 'A') goto yy76;
	goto yy18;
yy55:
	yych = *++YYCURSOR;
	if (yych <= '/') {
		if (yych == '.') goto yy60;
		goto yy18;
	} else {
		if (yych <= '9') goto yy58;
		if (yych != 'I') goto yy18;
	}
yy56:
	yych = *++YYCURSOR;
	if (yych == 'N') goto yy72;
	goto yy18;
yy57:
	yych = *++YYCURSOR;
	if (yych == '.') goto yy60;
	if (yych <= '/') goto yy18;
	if (yych >= ':') goto yy18;
yy58:
	++YYCURSOR;
	if ((YYLIMIT - YYCURSOR) < 4) YYFILL(4);
	yych = *YYCURSOR;
	if (yych <= ':') {
		if (yych <= '.') {
			if (yych <= '-') goto yy18;
			goto yy70;
		} else {
			if (yych <= '/') goto yy18;
			if (yych <= '9') goto yy58;
			goto yy18;
		}
	} else {
		if (yych <= 'E') {
			if (yych <= ';') goto yy63;
			if (yych <= 'D') goto yy18;
			goto yy65;
		} else {
			if (yych == 'e') goto yy65;
			goto yy18;
		}
	}
yy60:
	yych = *++YYCURSOR;
	if (yych <= '/') goto yy18;
	if (yych >= ':') goto yy18;
yy61:
	++YYCURSOR;
	if ((YYLIMIT - YYCURSOR) < 4) YYFILL(4);
	yych = *YYCURSOR;
	if (yych <= ';') {
		if (yych <= '/') goto yy18;
		if (yych <= '9') goto yy61;
		if (yych <= ':') goto yy18;
	} else {
		if (yych <= 'E') {
			if (yych <= 'D') goto yy18;
			goto yy65;
		} else {
			if (yych == 'e') goto yy65;
			goto yy18;
		}
	}
yy63:
	++YYCURSOR;
#line 582 "ext/standard/var_unserializer.re"
	{
#if SIZEOF_LONG == 4
use_double:
#endif
	*p = YYCURSOR;
	INIT_PZVAL(*rval);
	ZVAL_DOUBLE(*rval, zend_strtod((const char *)start + 2, NULL));
	return 1;
}
#line 1036 "ext/standard/var_unserializer.c"
yy65:
	yych = *++YYCURSOR;
	if (yych <= ',') {
		if (yych != '+') goto yy18;
	} else {
		if (yych <= '-') goto yy66;
		if (yych <= '/') goto yy18;
		if (yych <= '9') goto yy67;
		goto yy18;
	}
yy66:
	yych = *++YYCURSOR;
	if (yych <= ',') {
		if (yych == '+') goto yy69;
		goto yy18;
	} else {
		if (yych <= '-') goto yy69;
		if (yych <= '/') goto yy18;
		if (yych >= ':') goto yy18;
	}
yy67:
	++YYCURSOR;
	if (YYLIMIT <= YYCURSOR) YYFILL(1);
	yych = *YYCURSOR;
	if (yych <= '/') goto yy18;
	if (yych <= '9') goto yy67;
	if (yych == ';') goto yy63;
	goto yy18;
yy69:
	yych = *++YYCURSOR;
	if (yych <= '/') goto yy18;
	if (yych <= '9') goto yy67;
	goto yy18;
yy70:
	++YYCURSOR;
	if ((YYLIMIT - YYCURSOR) < 4) YYFILL(4);
	yych = *YYCURSOR;
	if (yych <= ';') {
		if (yych <= '/') goto yy18;
		if (yych <= '9') goto yy70;
		if (yych <= ':') goto yy18;
		goto yy63;
	} else {
		if (yych <= 'E') {
			if (yych <= 'D') goto yy18;
			goto yy65;
		} else {
			if (yych == 'e') goto yy65;
			goto yy18;
		}
	}
yy72:
	yych = *++YYCURSOR;
	if (yych != 'F') goto yy18;
yy73:
	yych = *++YYCURSOR;
	if (yych != ';') goto yy18;
	++YYCURSOR;
#line 567 "ext/standard/var_unserializer.re"
	{
	*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;
}
#line 1110 "ext/standard/var_unserializer.c"
yy76:
	yych = *++YYCURSOR;
	if (yych == 'N') goto yy73;
	goto yy18;
yy77:
	yych = *++YYCURSOR;
	if (yych <= ',') {
		if (yych != '+') goto yy18;
	} else {
		if (yych <= '-') goto yy78;
		if (yych <= '/') goto yy18;
		if (yych <= '9') goto yy79;
		goto yy18;
	}
yy78:
	yych = *++YYCURSOR;
	if (yych <= '/') goto yy18;
	if (yych >= ':') goto yy18;
yy79:
	++YYCURSOR;
	if (YYLIMIT <= YYCURSOR) YYFILL(1);
	yych = *YYCURSOR;
	if (yych <= '/') goto yy18;
	if (yych <= '9') goto yy79;
	if (yych != ';') goto yy18;
	++YYCURSOR;
#line 540 "ext/standard/var_unserializer.re"
	{
#if SIZEOF_LONG == 4
	int digits = YYCURSOR - start - 3;

	if (start[2] == '-' || start[2] == '+') {
		digits--;
	}

	/* Use double for large long values that were serialized on a 64-bit system */
	if (digits >= MAX_LENGTH_OF_LONG - 1) {
		if (digits == MAX_LENGTH_OF_LONG - 1) {
			int cmp = strncmp(YYCURSOR - MAX_LENGTH_OF_LONG, long_min_digits, MAX_LENGTH_OF_LONG - 1);

			if (!(cmp < 0 || (cmp == 0 && start[2] == '-'))) {
				goto use_double;
			}
		} else {
			goto use_double;
		}
	}
#endif
	*p = YYCURSOR;
	INIT_PZVAL(*rval);
	ZVAL_LONG(*rval, parse_iv(start + 2));
	return 1;
}
#line 1164 "ext/standard/var_unserializer.c"
yy83:
	yych = *++YYCURSOR;
	if (yych <= '/') goto yy18;
	if (yych >= '2') goto yy18;
	yych = *++YYCURSOR;
	if (yych != ';') goto yy18;
	++YYCURSOR;
#line 533 "ext/standard/var_unserializer.re"
	{
	*p = YYCURSOR;
	INIT_PZVAL(*rval);
	ZVAL_BOOL(*rval, parse_iv(start + 2));
	return 1;
}
#line 1179 "ext/standard/var_unserializer.c"
yy87:
	++YYCURSOR;
#line 526 "ext/standard/var_unserializer.re"
	{
	*p = YYCURSOR;
	INIT_PZVAL(*rval);
	ZVAL_NULL(*rval);
	return 1;
}
#line 1189 "ext/standard/var_unserializer.c"
yy89:
	yych = *++YYCURSOR;
	if (yych <= ',') {
		if (yych != '+') goto yy18;
	} else {
		if (yych <= '-') goto yy90;
		if (yych <= '/') goto yy18;
		if (yych <= '9') goto yy91;
		goto yy18;
	}
yy90:
	yych = *++YYCURSOR;
	if (yych <= '/') goto yy18;
	if (yych >= ':') goto yy18;
yy91:
	++YYCURSOR;
	if (YYLIMIT <= YYCURSOR) YYFILL(1);
	yych = *YYCURSOR;
	if (yych <= '/') goto yy18;
	if (yych <= '9') goto yy91;
	if (yych != ';') goto yy18;
	++YYCURSOR;
#line 503 "ext/standard/var_unserializer.re"
	{
	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) {
		var_push_dtor_no_addref(var_hash, rval);
	}
	*rval = *rval_ref;
	Z_ADDREF_PP(rval);
	Z_UNSET_ISREF_PP(rval);
	
	return 1;
}
#line 1235 "ext/standard/var_unserializer.c"
yy95:
	yych = *++YYCURSOR;
	if (yych <= ',') {
		if (yych != '+') goto yy18;
	} else {
		if (yych <= '-') goto yy96;
		if (yych <= '/') goto yy18;
		if (yych <= '9') goto yy97;
		goto yy18;
	}
yy96:
	yych = *++YYCURSOR;
	if (yych <= '/') goto yy18;
	if (yych >= ':') goto yy18;
yy97:
	++YYCURSOR;
	if (YYLIMIT <= YYCURSOR) YYFILL(1);
	yych = *YYCURSOR;
	if (yych <= '/') goto yy18;
	if (yych <= '9') goto yy97;
	if (yych != ';') goto yy18;
	++YYCURSOR;
#line 482 "ext/standard/var_unserializer.re"
	{
	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;
	Z_ADDREF_PP(rval);
	Z_SET_ISREF_PP(rval);
	
	return 1;
}
#line 1279 "ext/standard/var_unserializer.c"
}
#line 831 "ext/standard/var_unserializer.re"


	return 0;
}

Project: php-src
File: var_unserializer.c

PHPAPI void var_push_dtor(php_unserialize_data_t *var_hashx, zval **rval)
{
	var_entries *var_hash = (*var_hashx)->last_dtor;
#if VAR_ENTRIES_DBG
	fprintf(stderr, "var_push_dtor(%ld): %d\n", var_hash?var_hash->used_slots:-1L, Z_TYPE_PP(rval));
#endif

	if (!var_hash || var_hash->used_slots == VAR_ENTRIES_MAX) {
		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 {
			((var_entries *) (*var_hashx)->last_dtor)->next = var_hash;
		}

		(*var_hashx)->last_dtor = var_hash;
	}

	Z_ADDREF_PP(rval);
	var_hash->data[var_hash->used_slots++] = *rval;
}