From: Felipe Pena <felipe@php.net>
Date: Tue, 16 Jun 2009 02:54:26 +0000 (+0000)
Subject: - MFH: Fixed bug #48562 (Reference recursion causes segfault when used in wddx_serial... 
X-Git-Tag: php-5.3.0RC4~44
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=c353601a3f99b2bc072fa967e9ae79b4cd69bb05;p=php

- MFH: Fixed bug #48562 (Reference recursion causes segfault when used in wddx_serialize_vars())
---

diff --git a/ext/wddx/tests/bug48562.phpt b/ext/wddx/tests/bug48562.phpt
new file mode 100644
index 0000000000..d9ae376c56
--- /dev/null
+++ b/ext/wddx/tests/bug48562.phpt
@@ -0,0 +1,22 @@
+--TEST--
+Bug #48562 (Reference recursion causes segfault when used in wddx_serialize_vars())
+--FILE--
+<?php
+
+$foo = 'bar';
+
+$a['x'] = 'foo';
+$a['x'] = &$a;
+
+var_dump(wddx_serialize_vars($a));
+
+$a['x'] = 'foo';
+$a['x'] = $a;
+
+var_dump(wddx_serialize_vars($a));
+
+?>
+--EXPECTF--
+Warning: wddx_serialize_vars(): recursion detected in %s on line %d
+string(78) "<wddxPacket version='1.0'><header/><data><struct></struct></data></wddxPacket>"
+string(120) "<wddxPacket version='1.0'><header/><data><struct><var name='foo'><string>bar</string></var></struct></data></wddxPacket>"
diff --git a/ext/wddx/wddx.c b/ext/wddx/wddx.c
index e1139f8422..cd7e01a1ef 100644
--- a/ext/wddx/wddx.c
+++ b/ext/wddx/wddx.c
@@ -704,13 +704,27 @@ static void php_wddx_add_var(wddx_packet *packet, zval *name_var)
 			php_wddx_serialize_var(packet, *val, Z_STRVAL_P(name_var), Z_STRLEN_P(name_var) TSRMLS_CC);
 		}		
 	} else if (Z_TYPE_P(name_var) == IS_ARRAY || Z_TYPE_P(name_var) == IS_OBJECT)	{
+		int is_array = Z_TYPE_P(name_var) == IS_ARRAY;
+		
 		target_hash = HASH_OF(name_var);
 		
+		if (is_array && target_hash->nApplyCount > 1) {
+			php_error_docref(NULL TSRMLS_CC, E_WARNING, "recursion detected");
+			return;
+		}
+
 		zend_hash_internal_pointer_reset(target_hash);
 
 		while(zend_hash_get_current_data(target_hash, (void**)&val) == SUCCESS) {
+			if (is_array) {
+				target_hash->nApplyCount++;
+			}
+
 			php_wddx_add_var(packet, *val);
-				
+
+			if (is_array) {
+				target_hash->nApplyCount--;
+			}
 			zend_hash_move_forward(target_hash);
 		}
 	}