Fixed bug #55323 (SoapClient segmentation fault when XSD_TYPEKIND_EXTENSION contains itself)

NEWS

@@ -11,6 +11,11 @@ PHP                                                                        NEWS
   . Fixed bug #55238 (SSL options set by mysqli_ssl_set ignored for MySQLi
     persistent connections). (Andrey)
 
+- SOAP
+  . Fixed bug #55323 (SoapClient segmentation fault when XSD_TYPEKIND_EXTENSION
+    contains itself). (Dmitry)
+
+    
 28 Jul 2011, PHP 5.3.7 RC4
 - Improved core functions:
   . Updated crypt_blowfish to 1.2. ((CVE-2011-2483) (Solar Designer)

ext/soap/php_encoding.c

@@ -114,6 +114,26 @@ static void set_ns_and_type(xmlNodePtr node, encodeTypePtr type);
 		} \
 	}
 
+#define CHECK_XML_NULL(xml) \
+	{ \
+		xmlAttrPtr null; \
+		if (!xml) { \
+			zval *ret; \
+			ALLOC_INIT_ZVAL(ret); \
+			ZVAL_NULL(ret); \
+			return ret; \
+		} \
+		if (xml->properties) { \
+			null = get_attribute(xml->properties, "nil"); \
+			if (null) { \
+				zval *ret; \
+				ALLOC_INIT_ZVAL(ret); \
+				ZVAL_NULL(ret); \
+				return ret; \
+			} \
+		} \
+	}
+
 #define FIND_ZVAL_NULL(zval, xml, style) \
 { \
 	if (!zval || Z_TYPE_P(zval) == IS_NULL) { \
@@ -338,6 +358,19 @@ static zend_bool soap_check_zval_ref(zval *data, xmlNodePtr node TSRMLS_DC) {
 	return 0;
 }
 
+static zval* soap_find_xml_ref(xmlNodePtr node TSRMLS_DC)
+{
+	zval **data_ptr;
+
+	if (SOAP_GLOBAL(ref_map) && 
+	    zend_hash_index_find(SOAP_GLOBAL(ref_map), (ulong)node, (void**)&data_ptr) == SUCCESS) {
+		Z_SET_ISREF_PP(data_ptr);
+		Z_ADDREF_PP(data_ptr);
+		return *data_ptr;
+	}
+	return NULL;
+}
+
 static zend_bool soap_check_xml_ref(zval **data, xmlNodePtr node TSRMLS_DC)
 {
 	zval **data_ptr;
@@ -1513,6 +1546,11 @@ static zval *to_zval_object_ex(encodeTypePtr type, xmlNodePtr data, zend_class_e
 			    sdlType->encode->details.sdl_type->kind != XSD_TYPEKIND_LIST &&
 			    sdlType->encode->details.sdl_type->kind != XSD_TYPEKIND_UNION) {
 
+				CHECK_XML_NULL(data);
+				if ((ret = soap_find_xml_ref(data TSRMLS_CC)) != NULL) {
+					return ret;
+				}
+
 			    if (ce != ZEND_STANDARD_CLASS_DEF_PTR &&
 			        sdlType->encode->to_zval == sdl_guess_convert_zval &&
 			        sdlType->encode->details.sdl_type != NULL &&
@@ -1526,7 +1564,6 @@ static zval *to_zval_object_ex(encodeTypePtr type, xmlNodePtr data, zend_class_e
 			    } else {
 					ret = master_to_zval_int(sdlType->encode, data);
 				}
-				FIND_XML_NULL(data, ret);
 				if (soap_check_xml_ref(&ret, data TSRMLS_CC)) {
 					return ret;
 				}

ext/soap/tests/bugs/bug55323.phpt

@@ -0,0 +1,45 @@
+--TEST--
+Bug #55323 (SoapClient segmentation fault when XSD_TYPEKIND_EXTENSION contains itself)
+--SKIPIF--
+<?php require_once('skipif.inc'); ?>
+--FILE--
+<?php
+ini_set("soap.wsdl_cache_enabled",0);
+$timestamp = "2011-07-30T03:25:00-05:00";
+$wsdl = dirname(__FILE__)."/bug55323.wsdl";
+
+class TestSoapClient extends SoapClient {
+
+  function __construct($wsdl, $options) {
+    parent::__construct($wsdl, $options);
+  }
+
+  function __doRequest($request, $location, $action, $version, $one_way = 0) {
+    return <<<EOF
+<SOAP-ENV:Envelope SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ns1="http://test.com/soap/v3/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/">
+   <SOAP-ENV:Body>
+      <ns1:getObjectResponse>
+         <getObjectReturn xsi:type="ns1:Customer" id="ref1">
+            <accountId xsi:type="xsd:int">1234</accountId>
+            <parent href="#ref1"/>
+         </getObjectReturn>
+      </ns1:getObjectResponse>
+   </SOAP-ENV:Body>
+</SOAP-ENV:Envelope>
+EOF;
+  }
+
+}
+
+$soapClient = new TestSoapClient($wsdl,
+        array('trace' => 1, 'exceptions' => 0));
+$result = $soapClient->getObject();
+var_dump($result);
+?>
+--EXPECTF--
+object(stdClass)#%d (2) {
+  ["accountId"]=>
+  int(1234)
+  ["parent"]=>
+  *RECURSION*
+}

ext/soap/tests/bugs/bug55323.wsdl

@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<definitions xmlns="http://schemas.xmlsoap.org/wsdl/" xmlns:tns="http://test.com/soap/v3/" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap-enc="http://schemas.xmlsoap.org/soap/encoding/" xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" name="slApi" targetNamespace="http://test.com/soap/v3/">
+  <types>
+    <xsd:schema xmlns="http://www.w3.org/2001/XMLSchema"
+      targetNamespace="http://test.com/soap/v3/"
+      xmlns:tns="http://test.com/soap/v3/"
+      xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/"
+      xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/"
+      elementFormDefault="qualified">
+      <complexType name="Customer">
+        <complexContent>
+          <extension base="tns:Interface">
+            <sequence>
+              <element minOccurs="0" maxOccurs="1" nillable="true" name="accountId" type="int"/>
+              <element minOccurs="0" maxOccurs="1" name="parent" type="tns:Customer"/>
+            </sequence>
+          </extension>
+        </complexContent>
+      </complexType>
+      <complexType name="Interface" abstract="true"/>
+    </xsd:schema>                                                              
+  </types>
+  <message name="getObject"/>
+  <message name="getObjectResponse">
+    <part name="getObjectReturn" type="tns:Customer"/>
+  </message>
+  <portType name="CustomerPortType">
+    <operation name="getObject">
+      <input message="tns:getObject"/>
+      <output message="tns:getObjectResponse"/>
+    </operation>
+  </portType>
+  <binding name="CustomerBinding" type="tns:CustomerPortType">
+    <soap:binding style="rpc" transport="http://schemas.xmlsoap.org/soap/http"/>
+    <operation name="getObject">
+      <soap:operation soapAction="http://test.com/soap/v3/CustomerAction"/>
+      <input>
+        <soap:body namespace="http://test.com/soap/v3/" use="encoded" encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"/>
+      </input>
+      <output>
+        <soap:body namespace="http://test.com/soap/v3/" use="encoded" encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"/>
+      </output>
+    </operation>
+  </binding>
+  <service name="CustomerService">
+    <port name="CustomerPort" binding="tns:CustomerBinding">
+      <soap:address location="test://"/>
+    </port>
+  </service>
+</definitions>