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6f989cdb75
* PHP-8.3: Fix crash when calling childNodes next() when iterator is exhausted Fix references not handled correctly in C14N Fix crashes when entity declaration is removed while still having entity references
128 lines
4 KiB
C
128 lines
4 KiB
C
/*
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+----------------------------------------------------------------------+
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| Copyright (c) The PHP Group |
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+----------------------------------------------------------------------+
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| This source file is subject to version 3.01 of the PHP license, |
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| that is bundled with this package in the file LICENSE, and is |
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| available through the world-wide-web at the following url: |
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| https://www.php.net/license/3_01.txt |
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| If you did not receive a copy of the PHP license and are unable to |
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| obtain it through the world-wide-web, please send a note to |
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| license@php.net so we can mail you a copy immediately. |
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+----------------------------------------------------------------------+
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| Authors: Christian Stocker <chregu@php.net> |
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| Rob Richards <rrichards@php.net> |
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+----------------------------------------------------------------------+
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "php.h"
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#if defined(HAVE_LIBXML) && defined(HAVE_DOM)
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#include "php_dom.h"
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#include "dom_properties.h"
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/*
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* class DOMEntityReference extends DOMNode
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*
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* URL: https://www.w3.org/TR/2003/WD-DOM-Level-3-Core-20030226/DOM3-Core.html#ID-11C98490
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* Since:
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*/
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/* {{{ */
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PHP_METHOD(DOMEntityReference, __construct)
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{
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xmlNode *node;
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xmlNodePtr oldnode = NULL;
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dom_object *intern;
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char *name;
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size_t name_len, name_valid;
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if (zend_parse_parameters(ZEND_NUM_ARGS(), "s", &name, &name_len) == FAILURE) {
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RETURN_THROWS();
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}
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name_valid = xmlValidateName(BAD_CAST name, 0);
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if (name_valid != 0) {
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php_dom_throw_error(INVALID_CHARACTER_ERR, true);
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RETURN_THROWS();
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}
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node = xmlNewReference(NULL, BAD_CAST name);
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if (!node) {
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php_dom_throw_error(INVALID_STATE_ERR, true);
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RETURN_THROWS();
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}
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intern = Z_DOMOBJ_P(ZEND_THIS);
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oldnode = dom_object_get_node(intern);
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if (oldnode != NULL) {
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php_libxml_node_decrement_resource((php_libxml_node_object *)intern);
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}
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php_libxml_increment_node_ptr((php_libxml_node_object *)intern, node, (void *)intern);
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}
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/* }}} end DOMEntityReference::__construct */
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/* The following property handlers are necessary because of special lifetime management with entities and entity
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* references. The issue is that entity references hold a reference to an entity declaration, but don't
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* register that reference anywhere. When the entity declaration disappears we have no way of notifying the
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* entity references. Override the property handlers for the declaration-accessing properties to fix this problem. */
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xmlEntityPtr dom_entity_reference_fetch_and_sync_declaration(xmlNodePtr reference)
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{
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xmlEntityPtr entity = xmlGetDocEntity(reference->doc, reference->name);
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reference->children = (xmlNodePtr) entity;
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reference->last = (xmlNodePtr) entity;
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reference->content = entity ? entity->content : NULL;
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return entity;
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}
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int dom_entity_reference_child_read(dom_object *obj, zval *retval)
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{
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xmlNodePtr nodep = dom_object_get_node(obj);
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if (nodep == NULL) {
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php_dom_throw_error(INVALID_STATE_ERR, true);
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return FAILURE;
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}
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xmlEntityPtr entity = dom_entity_reference_fetch_and_sync_declaration(nodep);
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if (entity == NULL) {
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ZVAL_NULL(retval);
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return SUCCESS;
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}
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php_dom_create_object((xmlNodePtr) entity, retval, obj);
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return SUCCESS;
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}
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int dom_entity_reference_text_content_read(dom_object *obj, zval *retval)
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{
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xmlNodePtr nodep = dom_object_get_node(obj);
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if (nodep == NULL) {
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php_dom_throw_error(INVALID_STATE_ERR, true);
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return FAILURE;
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}
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dom_entity_reference_fetch_and_sync_declaration(nodep);
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return dom_node_text_content_read(obj, retval);
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}
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int dom_entity_reference_child_nodes_read(dom_object *obj, zval *retval)
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{
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xmlNodePtr nodep = dom_object_get_node(obj);
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if (nodep == NULL) {
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php_dom_throw_error(INVALID_STATE_ERR, true);
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return FAILURE;
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}
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dom_entity_reference_fetch_and_sync_declaration(nodep);
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return dom_node_child_nodes_read(obj, retval);
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}
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#endif
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