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php-src/ext/dom/element.c
Niels Dossche 3167d07603 Fix GH-12616: DOM: Removing XMLNS namespace node results in invalid default: prefix 
The namespace data is freed and set to NULL, but there remain references
to the namespace declaration nodes. This (rightfully) confuses libxml2
because its invariants are broken. We also have to remove all remaining
references from the subtree. This fixes the data corruption bug.

Closes GH-12681.
2023-11-17 19:47:08 +01:00

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/*
+----------------------------------------------------------------------+
| Copyright (c) The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 3.01 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: |
| https://www.php.net/license/3_01.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. |
+----------------------------------------------------------------------+
| Authors: Christian Stocker <chregu@php.net> |
| Rob Richards <rrichards@php.net> |
+----------------------------------------------------------------------+
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "php.h"
#if defined(HAVE_LIBXML) && defined(HAVE_DOM)
#include "php_dom.h"
/*
* class DOMElement extends DOMNode
*
* URL: https://www.w3.org/TR/2003/WD-DOM-Level-3-Core-20030226/DOM3-Core.html#core-ID-745549614
* Since:
*/
/* {{{ */
PHP_METHOD(DOMElement, __construct)
{
xmlNodePtr nodep = NULL, oldnode = NULL;
dom_object *intern;
char *name, *value = NULL, *uri = NULL;
char *localname = NULL, *prefix = NULL;
int errorcode = 0;
size_t name_len, value_len = 0, uri_len = 0;
int name_valid;
xmlNsPtr nsptr = NULL;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "s|s!s", &name, &name_len, &value, &value_len, &uri, &uri_len) == FAILURE) {
RETURN_THROWS();
}
name_valid = xmlValidateName((xmlChar *) name, 0);
if (name_valid != 0) {
php_dom_throw_error(INVALID_CHARACTER_ERR, 1);
RETURN_THROWS();
}
/* Namespace logic is separate and only when uri passed in to insure no BC breakage */
if (uri_len > 0) {
errorcode = dom_check_qname(name, &localname, &prefix, uri_len, name_len);
if (errorcode == 0) {
nodep = xmlNewNode (NULL, (xmlChar *)localname);
if (nodep != NULL && uri != NULL) {
nsptr = dom_get_ns(nodep, uri, &errorcode, prefix);
xmlSetNs(nodep, nsptr);
}
}
xmlFree(localname);
if (prefix != NULL) {
xmlFree(prefix);
}
if (errorcode != 0) {
if (nodep != NULL) {
xmlFreeNode(nodep);
}
php_dom_throw_error(errorcode, 1);
RETURN_THROWS();
}
} else {
/* If you don't pass a namespace uri, then you can't set a prefix */
localname = (char *) xmlSplitQName2((xmlChar *) name, (xmlChar **) &prefix);
if (prefix != NULL) {
xmlFree(localname);
xmlFree(prefix);
php_dom_throw_error(NAMESPACE_ERR, 1);
RETURN_THROWS();
}
nodep = xmlNewNode(NULL, (xmlChar *) name);
}
if (!nodep) {
php_dom_throw_error(INVALID_STATE_ERR, 1);
RETURN_THROWS();
}
if (value_len > 0) {
xmlNodeSetContentLen(nodep, (xmlChar *) value, value_len);
}
intern = Z_DOMOBJ_P(ZEND_THIS);
oldnode = dom_object_get_node(intern);
if (oldnode != NULL) {
php_libxml_node_decrement_resource((php_libxml_node_object *)intern);
}
php_libxml_increment_node_ptr((php_libxml_node_object *)intern, nodep, (void *)intern);
}
/* }}} end DOMElement::__construct */
/* {{{ tagName string
readonly=yes
URL: http://www.w3.org/TR/2003/WD-DOM-Level-3-Core-20030226/DOM3-Core.html#core-ID-104682815
Since:
*/
int dom_element_tag_name_read(dom_object *obj, zval *retval)
{
xmlNodePtr nodep;
xmlNsPtr ns;
xmlChar *qname;
nodep = dom_object_get_node(obj);
if (nodep == NULL) {
php_dom_throw_error(INVALID_STATE_ERR, 1);
return FAILURE;
}
ns = nodep->ns;
if (ns != NULL && ns->prefix) {
qname = xmlStrdup(ns->prefix);
qname = xmlStrcat(qname, (xmlChar *)":");
qname = xmlStrcat(qname, nodep->name);
ZVAL_STRING(retval, (char *)qname);
xmlFree(qname);
} else {
ZVAL_STRING(retval, (char *) nodep->name);
}
return SUCCESS;
}
/* }}} */
/* {{{ schemaTypeInfo typeinfo
readonly=yes
URL: http://www.w3.org/TR/2003/WD-DOM-Level-3-Core-20030226/DOM3-Core.html#Element-schemaTypeInfo
Since: DOM Level 3
*/
int dom_element_schema_type_info_read(dom_object *obj, zval *retval)
{
ZVAL_NULL(retval);
return SUCCESS;
}
/* }}} */
/* Note: the object returned is not necessarily a node, but can be an attribute or a namespace declaration. */
static xmlNodePtr dom_get_dom1_attribute(xmlNodePtr elem, xmlChar *name) /* {{{ */
{
int len;
const xmlChar *nqname;
nqname = xmlSplitQName3(name, &len);
if (nqname != NULL) {
xmlNsPtr ns;
xmlChar *prefix = xmlStrndup(name, len);
if (prefix && xmlStrEqual(prefix, (xmlChar *)"xmlns")) {
ns = elem->nsDef;
while (ns) {
if (xmlStrEqual(ns->prefix, nqname)) {
break;
}
ns = ns->next;
}
xmlFree(prefix);
return (xmlNodePtr)ns;
}
ns = xmlSearchNs(elem->doc, elem, prefix);
if (prefix != NULL) {
xmlFree(prefix);
}
if (ns != NULL) {
return (xmlNodePtr)xmlHasNsProp(elem, nqname, ns->href);
}
} else {
if (xmlStrEqual(name, (xmlChar *)"xmlns")) {
xmlNsPtr nsPtr = elem->nsDef;
while (nsPtr) {
if (nsPtr->prefix == NULL) {
return (xmlNodePtr)nsPtr;
}
nsPtr = nsPtr->next;
}
return NULL;
}
}
return (xmlNodePtr)xmlHasNsProp(elem, name, NULL);
}
/* }}} */
/* {{{ URL: http://www.w3.org/TR/2003/WD-DOM-Level-3-Core-20030226/DOM3-Core.html#core-ID-666EE0F9
Since:
*/
PHP_METHOD(DOMElement, getAttribute)
{
zval *id;
xmlNode *nodep;
char *name;
xmlChar *value = NULL;
dom_object *intern;
xmlNodePtr attr;
size_t name_len;
id = ZEND_THIS;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "s", &name, &name_len) == FAILURE) {
RETURN_THROWS();
}
DOM_GET_OBJ(nodep, id, xmlNodePtr, intern);
attr = dom_get_dom1_attribute(nodep, (xmlChar *)name);
if (attr) {
switch (attr->type) {
case XML_ATTRIBUTE_NODE:
value = xmlNodeListGetString(attr->doc, attr->children, 1);
break;
case XML_NAMESPACE_DECL:
value = xmlStrdup(((xmlNsPtr)attr)->href);
break;
default:
value = xmlStrdup(((xmlAttributePtr)attr)->defaultValue);
}
}
if (value == NULL) {
RETURN_EMPTY_STRING();
} else {
RETVAL_STRING((char *)value);
xmlFree(value);
}
}
/* }}} end dom_element_get_attribute */
/* {{{ URL: http://www.w3.org/TR/2003/WD-DOM-Level-3-Core-20030226/DOM3-Core.html#core-ID-F68F082
Since:
*/
PHP_METHOD(DOMElement, setAttribute)
{
zval *id;
xmlNode *nodep;
xmlNodePtr attr = NULL;
int ret, name_valid;
size_t name_len, value_len;
dom_object *intern;
char *name, *value;
id = ZEND_THIS;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "ss", &name, &name_len, &value, &value_len) == FAILURE) {
RETURN_THROWS();
}
if (name_len == 0) {
zend_argument_value_error(1, "cannot be empty");
RETURN_THROWS();
}
name_valid = xmlValidateName((xmlChar *) name, 0);
if (name_valid != 0) {
php_dom_throw_error(INVALID_CHARACTER_ERR, 1);
RETURN_THROWS();
}
DOM_GET_OBJ(nodep, id, xmlNodePtr, intern);
if (dom_node_is_read_only(nodep) == SUCCESS) {
php_dom_throw_error(NO_MODIFICATION_ALLOWED_ERR, dom_get_strict_error(intern->document));
RETURN_FALSE;
}
attr = dom_get_dom1_attribute(nodep, (xmlChar *)name);
if (attr != NULL) {
switch (attr->type) {
case XML_ATTRIBUTE_NODE:
node_list_unlink(attr->children);
break;
case XML_NAMESPACE_DECL:
RETURN_FALSE;
default:
break;
}
}
if (xmlStrEqual((xmlChar *)name, (xmlChar *)"xmlns")) {
if (xmlNewNs(nodep, (xmlChar *)value, NULL)) {
RETURN_TRUE;
}
} else {
attr = (xmlNodePtr)xmlSetProp(nodep, (xmlChar *) name, (xmlChar *)value);
}
if (!attr) {
zend_argument_value_error(1, "must be a valid XML attribute");
RETURN_THROWS();
}
DOM_RET_OBJ(attr, &ret, intern);
}
/* }}} end dom_element_set_attribute */
/* {{{ URL: http://www.w3.org/TR/2003/WD-DOM-Level-3-Core-20030226/DOM3-Core.html#core-ID-6D6AC0F9
Since:
*/
PHP_METHOD(DOMElement, removeAttribute)
{
zval *id;
xmlNodePtr nodep, attrp;
dom_object *intern;
size_t name_len;
char *name;
id = ZEND_THIS;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "s", &name, &name_len) == FAILURE) {
RETURN_THROWS();
}
DOM_GET_OBJ(nodep, id, xmlNodePtr, intern);
if (dom_node_is_read_only(nodep) == SUCCESS) {
php_dom_throw_error(NO_MODIFICATION_ALLOWED_ERR, dom_get_strict_error(intern->document));
RETURN_FALSE;
}
attrp = dom_get_dom1_attribute(nodep, (xmlChar *)name);
if (attrp == NULL) {
RETURN_FALSE;
}
switch (attrp->type) {
case XML_ATTRIBUTE_NODE:
if (php_dom_object_get_data(attrp) == NULL) {
node_list_unlink(attrp->children);
xmlUnlinkNode(attrp);
xmlFreeProp((xmlAttrPtr)attrp);
} else {
xmlUnlinkNode(attrp);
}
break;
case XML_NAMESPACE_DECL:
RETURN_FALSE;
default:
break;
}
RETURN_TRUE;
}
/* }}} end dom_element_remove_attribute */
/* {{{ URL: http://www.w3.org/TR/2003/WD-DOM-Level-3-Core-20030226/DOM3-Core.html#core-ID-217A91B8
Since:
*/
PHP_METHOD(DOMElement, getAttributeNode)
{
zval *id;
xmlNodePtr nodep, attrp;
size_t name_len;
int ret;
dom_object *intern;
char *name;
id = ZEND_THIS;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "s", &name, &name_len) == FAILURE) {
RETURN_THROWS();
}
DOM_GET_OBJ(nodep, id, xmlNodePtr, intern);
attrp = dom_get_dom1_attribute(nodep, (xmlChar *)name);
if (attrp == NULL) {
RETURN_FALSE;
}
if (attrp->type == XML_NAMESPACE_DECL) {
xmlNsPtr original = (xmlNsPtr) attrp;
/* Keep parent alive, because we're a fake child. */
GC_ADDREF(&intern->std);
(void) php_dom_create_fake_namespace_decl(nodep, original, return_value, intern);
} else {
DOM_RET_OBJ((xmlNodePtr) attrp, &ret, intern);
}
}
/* }}} end dom_element_get_attribute_node */
/* {{{ URL: http://www.w3.org/TR/2003/WD-DOM-Level-3-Core-20030226/DOM3-Core.html#core-ID-887236154
Since:
*/
PHP_METHOD(DOMElement, setAttributeNode)
{
zval *id, *node;
xmlNode *nodep;
xmlAttr *attrp, *existattrp = NULL;
dom_object *intern, *attrobj, *oldobj;
int ret;
id = ZEND_THIS;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "O", &node, dom_attr_class_entry) == FAILURE) {
RETURN_THROWS();
}
DOM_GET_OBJ(nodep, id, xmlNodePtr, intern);
if (dom_node_is_read_only(nodep) == SUCCESS) {
php_dom_throw_error(NO_MODIFICATION_ALLOWED_ERR, dom_get_strict_error(intern->document));
RETURN_FALSE;
}
DOM_GET_OBJ(attrp, node, xmlAttrPtr, attrobj);
if (attrp->type != XML_ATTRIBUTE_NODE) {
zend_argument_value_error(1, "must have the node attribute");
RETURN_THROWS();
}
if (!(attrp->doc == NULL || attrp->doc == nodep->doc)) {
php_dom_throw_error(WRONG_DOCUMENT_ERR, dom_get_strict_error(intern->document));
RETURN_FALSE;
}
existattrp = xmlHasProp(nodep, attrp->name);
if (existattrp != NULL && existattrp->type != XML_ATTRIBUTE_DECL) {
if ((oldobj = php_dom_object_get_data((xmlNodePtr) existattrp)) != NULL &&
((php_libxml_node_ptr *)oldobj->ptr)->node == (xmlNodePtr) attrp)
{
RETURN_NULL();
}
xmlUnlinkNode((xmlNodePtr) existattrp);
}
if (attrp->parent != NULL) {
xmlUnlinkNode((xmlNodePtr) attrp);
}
if (attrp->doc == NULL && nodep->doc != NULL) {
attrobj->document = intern->document;
php_libxml_increment_doc_ref((php_libxml_node_object *)attrobj, NULL);
}
xmlAddChild(nodep, (xmlNodePtr) attrp);
/* Returns old property if removed otherwise NULL */
if (existattrp != NULL) {
DOM_RET_OBJ((xmlNodePtr) existattrp, &ret, intern);
} else {
RETVAL_NULL();
}
}
/* }}} end dom_element_set_attribute_node */
/* {{{ URL: http://www.w3.org/TR/2003/WD-DOM-Level-3-Core-20030226/DOM3-Core.html#core-ID-D589198
Since:
*/
PHP_METHOD(DOMElement, removeAttributeNode)
{
zval *id, *node;
xmlNode *nodep;
xmlAttr *attrp;
dom_object *intern, *attrobj;
int ret;
id = ZEND_THIS;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "O", &node, dom_attr_class_entry) == FAILURE) {
RETURN_THROWS();
}
DOM_GET_OBJ(nodep, id, xmlNodePtr, intern);
if (dom_node_is_read_only(nodep) == SUCCESS) {
php_dom_throw_error(NO_MODIFICATION_ALLOWED_ERR, dom_get_strict_error(intern->document));
RETURN_FALSE;
}
DOM_GET_OBJ(attrp, node, xmlAttrPtr, attrobj);
if (attrp->type != XML_ATTRIBUTE_NODE || attrp->parent != nodep) {
php_dom_throw_error(NOT_FOUND_ERR, dom_get_strict_error(intern->document));
RETURN_FALSE;
}
xmlUnlinkNode((xmlNodePtr) attrp);
DOM_RET_OBJ((xmlNodePtr) attrp, &ret, intern);
}
/* }}} end dom_element_remove_attribute_node */
/* {{{ URL: http://www.w3.org/TR/2003/WD-DOM-Level-3-Core-20030226/DOM3-Core.html#core-ID-1938918D
Since:
*/
PHP_METHOD(DOMElement, getElementsByTagName)
{
zval *id;
xmlNodePtr elemp;
size_t name_len;
dom_object *intern, *namednode;
char *name;
xmlChar *local;
id = ZEND_THIS;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "s", &name, &name_len) == FAILURE) {
RETURN_THROWS();
}
DOM_GET_OBJ(elemp, id, xmlNodePtr, intern);
php_dom_create_iterator(return_value, DOM_NODELIST);
namednode = Z_DOMOBJ_P(return_value);
local = xmlCharStrndup(name, name_len);
dom_namednode_iter(intern, 0, namednode, NULL, local, NULL);
}
/* }}} end dom_element_get_elements_by_tag_name */
/* {{{ URL: http://www.w3.org/TR/2003/WD-DOM-Level-3-Core-20030226/DOM3-Core.html#core-ID-ElGetAttrNS
Since: DOM Level 2
*/
PHP_METHOD(DOMElement, getAttributeNS)
{
zval *id;
xmlNodePtr elemp;
xmlNsPtr nsptr;
dom_object *intern;
size_t uri_len = 0, name_len = 0;
char *uri, *name;
xmlChar *strattr;
id = ZEND_THIS;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "s!s", &uri, &uri_len, &name, &name_len) == FAILURE) {
RETURN_THROWS();
}
DOM_GET_OBJ(elemp, id, xmlNodePtr, intern);
strattr = xmlGetNsProp(elemp, (xmlChar *) name, (xmlChar *) uri);
if (strattr != NULL) {
RETVAL_STRING((char *)strattr);
xmlFree(strattr);
} else {
if (xmlStrEqual((xmlChar *) uri, (xmlChar *)DOM_XMLNS_NAMESPACE)) {
nsptr = dom_get_nsdecl(elemp, (xmlChar *)name);
if (nsptr != NULL) {
RETVAL_STRING((char *) nsptr->href);
} else {
RETVAL_EMPTY_STRING();
}
} else {
RETVAL_EMPTY_STRING();
}
}
}
/* }}} end dom_element_get_attribute_ns */
static xmlNsPtr _dom_new_reconNs(xmlDocPtr doc, xmlNodePtr tree, xmlNsPtr ns) /* {{{ */
{
xmlNsPtr def;
xmlChar prefix[50];
int counter = 1;
if ((tree == NULL) || (ns == NULL) || (ns->type != XML_NAMESPACE_DECL)) {
return NULL;
}
/* Code taken from libxml2 (2.6.20) xmlNewReconciliedNs
*
* Find a close prefix which is not already in use.
* Let's strip namespace prefixes longer than 20 chars !
*/
if (ns->prefix == NULL)
snprintf((char *) prefix, sizeof(prefix), "default");
else
snprintf((char *) prefix, sizeof(prefix), "%.20s", (char *)ns->prefix);
def = xmlSearchNs(doc, tree, prefix);
while (def != NULL) {
if (counter > 1000) return(NULL);
if (ns->prefix == NULL)
snprintf((char *) prefix, sizeof(prefix), "default%d", counter++);
else
snprintf((char *) prefix, sizeof(prefix), "%.20s%d",
(char *)ns->prefix, counter++);
def = xmlSearchNs(doc, tree, prefix);
}
/*
* OK, now we are ready to create a new one.
*/
def = xmlNewNs(tree, ns->href, prefix);
return(def);
}
/* }}} */
/* {{{ URL: http://www.w3.org/TR/2003/WD-DOM-Level-3-Core-20030226/DOM3-Core.html#core-ID-ElSetAttrNS
Since: DOM Level 2
*/
PHP_METHOD(DOMElement, setAttributeNS)
{
zval *id;
xmlNodePtr elemp, nodep = NULL;
xmlNsPtr nsptr;
xmlAttr *attr;
size_t uri_len = 0, name_len = 0, value_len = 0;
char *uri, *name, *value;
char *localname = NULL, *prefix = NULL;
dom_object *intern;
int errorcode = 0, stricterror, is_xmlns = 0, name_valid;
id = ZEND_THIS;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "s!ss", &uri, &uri_len, &name, &name_len, &value, &value_len) == FAILURE) {
RETURN_THROWS();
}
if (name_len == 0) {
zend_argument_value_error(2, "cannot be empty");
RETURN_THROWS();
}
DOM_GET_OBJ(elemp, id, xmlNodePtr, intern);
stricterror = dom_get_strict_error(intern->document);
if (dom_node_is_read_only(elemp) == SUCCESS) {
php_dom_throw_error(NO_MODIFICATION_ALLOWED_ERR, stricterror);
RETURN_NULL();
}
errorcode = dom_check_qname(name, &localname, &prefix, uri_len, name_len);
if (errorcode == 0) {
if (uri_len > 0) {
nodep = (xmlNodePtr) xmlHasNsProp(elemp, (xmlChar *) localname, (xmlChar *) uri);
if (nodep != NULL && nodep->type != XML_ATTRIBUTE_DECL) {
node_list_unlink(nodep->children);
}
if ((xmlStrEqual((xmlChar *) prefix, (xmlChar *)"xmlns") ||
(prefix == NULL && xmlStrEqual((xmlChar *) localname, (xmlChar *)"xmlns"))) &&
xmlStrEqual((xmlChar *) uri, (xmlChar *)DOM_XMLNS_NAMESPACE)) {
is_xmlns = 1;
if (prefix == NULL) {
nsptr = dom_get_nsdecl(elemp, NULL);
} else {
nsptr = dom_get_nsdecl(elemp, (xmlChar *)localname);
}
} else {
nsptr = xmlSearchNsByHref(elemp->doc, elemp, (xmlChar *)uri);
if (nsptr && nsptr->prefix == NULL) {
xmlNsPtr tmpnsptr;
tmpnsptr = nsptr->next;
while (tmpnsptr) {
if ((tmpnsptr->prefix != NULL) && (tmpnsptr->href != NULL) &&
(xmlStrEqual(tmpnsptr->href, (xmlChar *) uri))) {
nsptr = tmpnsptr;
break;
}
tmpnsptr = tmpnsptr->next;
}
if (tmpnsptr == NULL) {
nsptr = _dom_new_reconNs(elemp->doc, elemp, nsptr);
}
}
}
if (nsptr == NULL) {
if (prefix == NULL) {
if (is_xmlns == 1) {
xmlNewNs(elemp, (xmlChar *)value, NULL);
xmlReconciliateNs(elemp->doc, elemp);
} else {
errorcode = NAMESPACE_ERR;
}
} else {
if (is_xmlns == 1) {
xmlNewNs(elemp, (xmlChar *)value, (xmlChar *)localname);
} else {
nsptr = dom_get_ns(elemp, uri, &errorcode, prefix);
}
xmlReconciliateNs(elemp->doc, elemp);
}
} else {
if (is_xmlns == 1) {
if (nsptr->href) {
xmlFree((xmlChar *) nsptr->href);
}
nsptr->href = xmlStrdup((xmlChar *)value);
}
}
if (errorcode == 0 && is_xmlns == 0) {
xmlSetNsProp(elemp, nsptr, (xmlChar *)localname, (xmlChar *)value);
}
} else {
name_valid = xmlValidateName((xmlChar *) localname, 0);
if (name_valid != 0) {
errorcode = INVALID_CHARACTER_ERR;
stricterror = 1;
} else {
attr = xmlHasProp(elemp, (xmlChar *)localname);
if (attr != NULL && attr->type != XML_ATTRIBUTE_DECL) {
node_list_unlink(attr->children);
}
xmlSetProp(elemp, (xmlChar *)localname, (xmlChar *)value);
}
}
}
xmlFree(localname);
if (prefix != NULL) {
xmlFree(prefix);
}
if (errorcode != 0) {
php_dom_throw_error(errorcode, stricterror);
}
RETURN_NULL();
}
/* }}} end dom_element_set_attribute_ns */
static void dom_remove_eliminated_ns_single_element(xmlNodePtr node, xmlNsPtr eliminatedNs)
{
ZEND_ASSERT(node->type == XML_ELEMENT_NODE);
if (node->ns == eliminatedNs) {
node->ns = NULL;
}
for (xmlAttrPtr attr = node->properties; attr != NULL; attr = attr->next) {
if (attr->ns == eliminatedNs) {
attr->ns = NULL;
}
}
}
static void dom_remove_eliminated_ns(xmlNodePtr node, xmlNsPtr eliminatedNs)
{
dom_remove_eliminated_ns_single_element(node, eliminatedNs);
xmlNodePtr base = node;
node = node->children;
while (node != NULL) {
ZEND_ASSERT(node != base);
if (node->type == XML_ELEMENT_NODE) {
dom_remove_eliminated_ns_single_element(node, eliminatedNs);
if (node->children) {
node = node->children;
continue;
}
}
if (node->next) {
node = node->next;
} else {
/* Go upwards, until we find a parent node with a next sibling, or until we hit the base. */
do {
node = node->parent;
if (node == base) {
return;
}
} while (node->next == NULL);
node = node->next;
}
}
}
static void dom_eliminate_ns(xmlNodePtr nodep, xmlNsPtr nsptr)
{
if (nsptr->href != NULL) {
xmlFree((char *) nsptr->href);
nsptr->href = NULL;
}
if (nsptr->prefix != NULL) {
xmlFree((char *) nsptr->prefix);
nsptr->prefix = NULL;
}
/* Remove it from the list and move it to the old ns list */
xmlNsPtr current_ns = nodep->nsDef;
if (current_ns == nsptr) {
nodep->nsDef = nsptr->next;
} else {
do {
if (current_ns->next == nsptr) {
current_ns->next = nsptr->next;
break;
}
current_ns = current_ns->next;
} while (current_ns != NULL);
}
nsptr->next = NULL;
dom_set_old_ns(nodep->doc, nsptr);
dom_remove_eliminated_ns(nodep, nsptr);
}
/* {{{ URL: http://www.w3.org/TR/2003/WD-DOM-Level-3-Core-20030226/DOM3-Core.html#core-ID-ElRemAtNS
Since: DOM Level 2
*/
PHP_METHOD(DOMElement, removeAttributeNS)
{
zval *id;
xmlNode *nodep;
xmlAttr *attrp;
xmlNsPtr nsptr;
dom_object *intern;
size_t name_len, uri_len;
char *name, *uri;
id = ZEND_THIS;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "s!s", &uri, &uri_len, &name, &name_len) == FAILURE) {
RETURN_THROWS();
}
DOM_GET_OBJ(nodep, id, xmlNodePtr, intern);
if (dom_node_is_read_only(nodep) == SUCCESS) {
php_dom_throw_error(NO_MODIFICATION_ALLOWED_ERR, dom_get_strict_error(intern->document));
RETURN_NULL();
}
attrp = xmlHasNsProp(nodep, (xmlChar *)name, (xmlChar *)uri);
nsptr = dom_get_nsdecl(nodep, (xmlChar *)name);
if (nsptr != NULL) {
if (xmlStrEqual((xmlChar *)uri, nsptr->href)) {
dom_eliminate_ns(nodep, nsptr);
} else {
RETURN_NULL();
}
}
if (attrp && attrp->type != XML_ATTRIBUTE_DECL) {
if (php_dom_object_get_data((xmlNodePtr) attrp) == NULL) {
node_list_unlink(attrp->children);
xmlUnlinkNode((xmlNodePtr) attrp);
xmlFreeProp(attrp);
} else {
xmlUnlinkNode((xmlNodePtr) attrp);
}
}
RETURN_NULL();
}
/* }}} end dom_element_remove_attribute_ns */
/* {{{ URL: http://www.w3.org/TR/2003/WD-DOM-Level-3-Core-20030226/DOM3-Core.html#core-ID-ElGetAtNodeNS
Since: DOM Level 2
*/
PHP_METHOD(DOMElement, getAttributeNodeNS)
{
zval *id;
xmlNodePtr elemp;
xmlAttrPtr attrp;
dom_object *intern;
size_t uri_len, name_len;
int ret;
char *uri, *name;
id = ZEND_THIS;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "s!s", &uri, &uri_len, &name, &name_len) == FAILURE) {
RETURN_THROWS();
}
DOM_GET_OBJ(elemp, id, xmlNodePtr, intern);
attrp = xmlHasNsProp(elemp, (xmlChar *)name, (xmlChar *)uri);
if (attrp == NULL) {
if (xmlStrEqual((xmlChar *) uri, (xmlChar *)DOM_XMLNS_NAMESPACE)) {
xmlNsPtr nsptr;
nsptr = dom_get_nsdecl(elemp, (xmlChar *)name);
if (nsptr != NULL) {
/* Keep parent alive, because we're a fake child. */
GC_ADDREF(&intern->std);
(void) php_dom_create_fake_namespace_decl(elemp, nsptr, return_value, intern);
} else {
RETURN_NULL();
}
} else {
RETURN_NULL();
}
} else {
DOM_RET_OBJ((xmlNodePtr) attrp, &ret, intern);
}
}
/* }}} end dom_element_get_attribute_node_ns */
/* {{{ URL: http://www.w3.org/TR/2003/WD-DOM-Level-3-Core-20030226/DOM3-Core.html#core-ID-ElSetAtNodeNS
Since: DOM Level 2
*/
PHP_METHOD(DOMElement, setAttributeNodeNS)
{
zval *id, *node;
xmlNode *nodep;
xmlNs *nsp;
xmlAttr *attrp, *existattrp = NULL;
dom_object *intern, *attrobj, *oldobj;
int ret;
id = ZEND_THIS;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "O", &node, dom_attr_class_entry) == FAILURE) {
RETURN_THROWS();
}
DOM_GET_OBJ(nodep, id, xmlNodePtr, intern);
if (dom_node_is_read_only(nodep) == SUCCESS) {
php_dom_throw_error(NO_MODIFICATION_ALLOWED_ERR, dom_get_strict_error(intern->document));
RETURN_FALSE;
}
DOM_GET_OBJ(attrp, node, xmlAttrPtr, attrobj);
/* ZPP Guarantees that a DOMAttr class is given, as it is converted to a xmlAttr
* to pass to libxml (see http://www.xmlsoft.org/html/libxml-tree.html#xmlAttr)
* if it is not of type XML_ATTRIBUTE_NODE it indicates a bug somewhere */
ZEND_ASSERT(attrp->type == XML_ATTRIBUTE_NODE);
if (!(attrp->doc == NULL || attrp->doc == nodep->doc)) {
php_dom_throw_error(WRONG_DOCUMENT_ERR, dom_get_strict_error(intern->document));
RETURN_FALSE;
}
nsp = attrp->ns;
if (nsp != NULL) {
existattrp = xmlHasNsProp(nodep, attrp->name, nsp->href);
} else {
existattrp = xmlHasProp(nodep, attrp->name);
}
if (existattrp != NULL && existattrp->type != XML_ATTRIBUTE_DECL) {
if ((oldobj = php_dom_object_get_data((xmlNodePtr) existattrp)) != NULL &&
((php_libxml_node_ptr *)oldobj->ptr)->node == (xmlNodePtr) attrp)
{
RETURN_NULL();
}
xmlUnlinkNode((xmlNodePtr) existattrp);
}
if (attrp->parent != NULL) {
xmlUnlinkNode((xmlNodePtr) attrp);
}
if (attrp->doc == NULL && nodep->doc != NULL) {
attrobj->document = intern->document;
php_libxml_increment_doc_ref((php_libxml_node_object *)attrobj, NULL);
}
xmlAddChild(nodep, (xmlNodePtr) attrp);
/* Returns old property if removed otherwise NULL */
if (existattrp != NULL) {
DOM_RET_OBJ((xmlNodePtr) existattrp, &ret, intern);
} else {
RETVAL_NULL();
}
}
/* }}} end dom_element_set_attribute_node_ns */
/* {{{ URL: http://www.w3.org/TR/2003/WD-DOM-Level-3-Core-20030226/DOM3-Core.html#core-ID-A6C90942
Since: DOM Level 2
*/
PHP_METHOD(DOMElement, getElementsByTagNameNS)
{
zval *id;
xmlNodePtr elemp;
size_t uri_len, name_len;
dom_object *intern, *namednode;
char *uri, *name;
xmlChar *local, *nsuri;
id = ZEND_THIS;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "s!s", &uri, &uri_len, &name, &name_len) == FAILURE) {
RETURN_THROWS();
}
DOM_GET_OBJ(elemp, id, xmlNodePtr, intern);
php_dom_create_iterator(return_value, DOM_NODELIST);
namednode = Z_DOMOBJ_P(return_value);
local = xmlCharStrndup(name, name_len);
nsuri = xmlCharStrndup(uri ? uri : "", uri_len);
dom_namednode_iter(intern, 0, namednode, NULL, local, nsuri);
}
/* }}} end dom_element_get_elements_by_tag_name_ns */
/* {{{ URL: http://www.w3.org/TR/2003/WD-DOM-Level-3-Core-20030226/DOM3-Core.html#core-ID-ElHasAttr
Since: DOM Level 2
*/
PHP_METHOD(DOMElement, hasAttribute)
{
zval *id;
xmlNode *nodep;
dom_object *intern;
char *name;
size_t name_len;
xmlNodePtr attr;
id = ZEND_THIS;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "s", &name, &name_len) == FAILURE) {
RETURN_THROWS();
}
DOM_GET_OBJ(nodep, id, xmlNodePtr, intern);
attr = dom_get_dom1_attribute(nodep, (xmlChar *)name);
if (attr == NULL) {
RETURN_FALSE;
} else {
RETURN_TRUE;
}
}
/* }}} end dom_element_has_attribute */
/* {{{ URL: http://www.w3.org/TR/2003/WD-DOM-Level-3-Core-20030226/DOM3-Core.html#core-ID-ElHasAttrNS
Since: DOM Level 2
*/
PHP_METHOD(DOMElement, hasAttributeNS)
{
zval *id;
xmlNodePtr elemp;
xmlNs *nsp;
dom_object *intern;
size_t uri_len, name_len;
char *uri, *name;
xmlChar *value;
id = ZEND_THIS;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "s!s", &uri, &uri_len, &name, &name_len) == FAILURE) {
RETURN_THROWS();
}
DOM_GET_OBJ(elemp, id, xmlNodePtr, intern);
value = xmlGetNsProp(elemp, (xmlChar *)name, (xmlChar *)uri);
if (value != NULL) {
xmlFree(value);
RETURN_TRUE;
} else {
if (xmlStrEqual((xmlChar *)uri, (xmlChar *)DOM_XMLNS_NAMESPACE)) {
nsp = dom_get_nsdecl(elemp, (xmlChar *)name);
if (nsp != NULL) {
RETURN_TRUE;
}
}
}
RETURN_FALSE;
}
/* }}} end dom_element_has_attribute_ns */
static void php_set_attribute_id(xmlAttrPtr attrp, bool is_id) /* {{{ */
{
if (is_id == 1 && attrp->atype != XML_ATTRIBUTE_ID) {
xmlChar *id_val;
id_val = xmlNodeListGetString(attrp->doc, attrp->children, 1);
if (id_val != NULL) {
xmlAddID(NULL, attrp->doc, id_val, attrp);
xmlFree(id_val);
}
} else if (is_id == 0 && attrp->atype == XML_ATTRIBUTE_ID) {
xmlRemoveID(attrp->doc, attrp);
attrp->atype = 0;
}
}
/* }}} */
/* {{{ URL: http://www.w3.org/TR/2003/WD-DOM-Level-3-Core-20030226/DOM3-Core.html#core-ID-ElSetIdAttr
Since: DOM Level 3
*/
PHP_METHOD(DOMElement, setIdAttribute)
{
zval *id;
xmlNode *nodep;
xmlAttrPtr attrp;
dom_object *intern;
char *name;
size_t name_len;
bool is_id;
id = ZEND_THIS;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "sb", &name, &name_len, &is_id) == FAILURE) {
RETURN_THROWS();
}
DOM_GET_OBJ(nodep, id, xmlNodePtr, intern);
if (dom_node_is_read_only(nodep) == SUCCESS) {
php_dom_throw_error(NO_MODIFICATION_ALLOWED_ERR, dom_get_strict_error(intern->document));
RETURN_NULL();
}
attrp = xmlHasNsProp(nodep, (xmlChar *)name, NULL);
if (attrp == NULL || attrp->type == XML_ATTRIBUTE_DECL) {
php_dom_throw_error(NOT_FOUND_ERR, dom_get_strict_error(intern->document));
} else {
php_set_attribute_id(attrp, is_id);
}
RETURN_NULL();
}
/* }}} end dom_element_set_id_attribute */
/* {{{ URL: http://www.w3.org/TR/2003/WD-DOM-Level-3-Core-20030226/DOM3-Core.html#core-ID-ElSetIdAttrNS
Since: DOM Level 3
*/
PHP_METHOD(DOMElement, setIdAttributeNS)
{
zval *id;
xmlNodePtr elemp;
xmlAttrPtr attrp;
dom_object *intern;
size_t uri_len, name_len;
char *uri, *name;
bool is_id;
id = ZEND_THIS;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "ssb", &uri, &uri_len, &name, &name_len, &is_id) == FAILURE) {
RETURN_THROWS();
}
DOM_GET_OBJ(elemp, id, xmlNodePtr, intern);
if (dom_node_is_read_only(elemp) == SUCCESS) {
php_dom_throw_error(NO_MODIFICATION_ALLOWED_ERR, dom_get_strict_error(intern->document));
RETURN_NULL();
}
attrp = xmlHasNsProp(elemp, (xmlChar *)name, (xmlChar *)uri);
if (attrp == NULL || attrp->type == XML_ATTRIBUTE_DECL) {
php_dom_throw_error(NOT_FOUND_ERR, dom_get_strict_error(intern->document));
} else {
php_set_attribute_id(attrp, is_id);
}
RETURN_NULL();
}
/* }}} end dom_element_set_id_attribute_ns */
/* {{{ URL: http://www.w3.org/TR/2003/WD-DOM-Level-3-Core-20030226/DOM3-Core.html#core-ID-ElSetIdAttrNode
Since: DOM Level 3
*/
PHP_METHOD(DOMElement, setIdAttributeNode)
{
zval *id, *node;
xmlNode *nodep;
xmlAttrPtr attrp;
dom_object *intern, *attrobj;
bool is_id;
id = ZEND_THIS;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "Ob", &node, dom_attr_class_entry, &is_id) == FAILURE) {
RETURN_THROWS();
}
DOM_GET_OBJ(nodep, id, xmlNodePtr, intern);
if (dom_node_is_read_only(nodep) == SUCCESS) {
php_dom_throw_error(NO_MODIFICATION_ALLOWED_ERR, dom_get_strict_error(intern->document));
RETURN_NULL();
}
DOM_GET_OBJ(attrp, node, xmlAttrPtr, attrobj);
if (attrp->parent != nodep) {
php_dom_throw_error(NOT_FOUND_ERR, dom_get_strict_error(intern->document));
} else {
php_set_attribute_id(attrp, is_id);
}
RETURN_NULL();
}
/* }}} end dom_element_set_id_attribute_node */
/* {{{ URL:
Since:
*/
PHP_METHOD(DOMElement, remove)
{
zval *id;
xmlNodePtr child;
dom_object *intern;
if (zend_parse_parameters_none() == FAILURE) {
RETURN_THROWS();
}
id = ZEND_THIS;
DOM_GET_OBJ(child, id, xmlNodePtr, intern);
dom_child_node_remove(intern);
}
/* }}} end DOMElement::remove */
PHP_METHOD(DOMElement, after)
{
int argc = 0;
zval *args, *id;
dom_object *intern;
xmlNode *context;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "*", &args, &argc) == FAILURE) {
RETURN_THROWS();
}
id = ZEND_THIS;
DOM_GET_OBJ(context, id, xmlNodePtr, intern);
dom_parent_node_after(intern, args, argc);
}
PHP_METHOD(DOMElement, before)
{
int argc = 0;
zval *args, *id;
dom_object *intern;
xmlNode *context;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "*", &args, &argc) == FAILURE) {
RETURN_THROWS();
}
id = ZEND_THIS;
DOM_GET_OBJ(context, id, xmlNodePtr, intern);
dom_parent_node_before(intern, args, argc);
}
/* {{{ URL: https://dom.spec.whatwg.org/#dom-parentnode-append
Since: DOM Living Standard (DOM4)
*/
PHP_METHOD(DOMElement, append)
{
int argc = 0;
zval *args, *id;
dom_object *intern;
xmlNode *context;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "*", &args, &argc) == FAILURE) {
RETURN_THROWS();
}
id = ZEND_THIS;
DOM_GET_OBJ(context, id, xmlNodePtr, intern);
dom_parent_node_append(intern, args, argc);
}
/* }}} end DOMElement::append */
/* {{{ URL: https://dom.spec.whatwg.org/#dom-parentnode-prepend
Since: DOM Living Standard (DOM4)
*/
PHP_METHOD(DOMElement, prepend)
{
int argc = 0;
zval *args, *id;
dom_object *intern;
xmlNode *context;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "*", &args, &argc) == FAILURE) {
RETURN_THROWS();
}
id = ZEND_THIS;
DOM_GET_OBJ(context, id, xmlNodePtr, intern);
dom_parent_node_prepend(intern, args, argc);
}
/* }}} end DOMElement::prepend */
/* {{{ URL: https://dom.spec.whatwg.org/#dom-parentnode-replacechildren
Since: DOM Living Standard (DOM4)
*/
PHP_METHOD(DOMElement, replaceWith)
{
int argc = 0;
zval *args, *id;
dom_object *intern;
xmlNode *context;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "*", &args, &argc) == FAILURE) {
RETURN_THROWS();
}
id = ZEND_THIS;
DOM_GET_OBJ(context, id, xmlNodePtr, intern);
dom_child_replace_with(intern, args, argc);
}
/* }}} end DOMElement::prepend */
#endif
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