mirror of
https://github.com/php/php-src.git
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258 lines
7.4 KiB
C
258 lines
7.4 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: Niels Dossche <nielsdos@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 "namespace_compat.h"
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static bool check_options_validity(uint32_t arg_num, zend_long options)
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{
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const zend_long VALID_OPTIONS = XML_PARSE_NOENT
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| XML_PARSE_DTDLOAD
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| XML_PARSE_DTDATTR
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| XML_PARSE_DTDVALID
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| XML_PARSE_NOERROR
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| XML_PARSE_NOWARNING
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| XML_PARSE_NOBLANKS
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| XML_PARSE_XINCLUDE
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| XML_PARSE_NSCLEAN
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| XML_PARSE_NOCDATA
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| XML_PARSE_NONET
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| XML_PARSE_PEDANTIC
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| XML_PARSE_COMPACT
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| XML_PARSE_HUGE
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| XML_PARSE_BIG_LINES;
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if ((options & ~VALID_OPTIONS) != 0) {
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zend_argument_value_error(2, "contains invalid flags (allowed flags: "
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"LIBXML_NOENT, "
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"LIBXML_DTDLOAD, "
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"LIBXML_DTDATTR, "
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"LIBXML_DTDVALID, "
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"LIBXML_NOERROR, "
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"LIBXML_NOWARNING, "
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"LIBXML_NOBLANKS, "
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"LIBXML_XINCLUDE, "
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"LIBXML_NSCLEAN, "
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"LIBXML_NOCDATA, "
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"LIBXML_NONET, "
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"LIBXML_PEDANTIC, "
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"LIBXML_COMPACT, "
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"LIBXML_PARSEHUGE, "
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"LIBXML_BIGLINES)");
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return false;
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}
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return true;
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}
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/* Living spec never creates explicit namespace declaration nodes.
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* They are only written upon serialization but never appear in the tree.
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* So in principle we could just ignore them outright.
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* However, step 10 in https://html.spec.whatwg.org/multipage/parsing.html#create-an-element-for-the-token
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* requires us to have the declaration as an attribute available */
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static void dom_mark_namespaces_as_attributes_too(xmlDocPtr doc)
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{
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xmlNodePtr node = doc->children;
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while (node != NULL) {
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if (node->type == XML_ELEMENT_NODE) {
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dom_ns_compat_mark_attribute_list(node->nsDef);
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if (node->children) {
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node = node->children;
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continue;
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}
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}
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if (node->next) {
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node = node->next;
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} else {
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/* Go upwards, until we find a parent node with a next sibling, or until we hit the base. */
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do {
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node = node->parent;
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if (node == NULL) {
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return;
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}
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} while (node->next == NULL);
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node = node->next;
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}
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}
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}
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void dom_mark_namespaces_for_copy_based_on_copy(xmlNodePtr copy, const xmlNode *original)
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{
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xmlNodePtr copy_current = copy;
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const xmlNode *original_current = original;
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while (copy_current != NULL) {
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ZEND_ASSERT(original_current != NULL);
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if (copy_current->type == XML_ELEMENT_NODE) {
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dom_ns_compat_copy_attribute_list_mark(copy_current->nsDef, original_current->nsDef);
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if (copy_current->children) {
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copy_current = copy_current->children;
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original_current = original_current->children;
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continue;
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}
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}
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if (copy_current->next) {
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copy_current = copy_current->next;
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original_current = original_current->next;
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} else {
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/* Go upwards, until we find a parent node with a next sibling, or until we hit the base. */
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do {
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copy_current = copy_current->parent;
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if (copy_current == NULL) {
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return;
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}
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original_current = original_current->parent;
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} while (copy_current->next == NULL);
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copy_current = copy_current->next;
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original_current = original_current->next;
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}
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}
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}
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PHP_METHOD(DOM_XMLDocument, createEmpty)
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{
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const char *version = NULL;
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size_t encoding_len = strlen("UTF-8");
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const char *encoding = "UTF-8";
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size_t version_len;
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if (zend_parse_parameters(ZEND_NUM_ARGS(), "|sp", &version, &version_len, &encoding, &encoding_len) == FAILURE) {
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RETURN_THROWS();
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}
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xmlCharEncodingHandlerPtr handler = xmlFindCharEncodingHandler(encoding);
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if (handler != NULL) {
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xmlCharEncCloseFunc(handler);
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} else {
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zend_argument_value_error(2, "is not a valid document encoding");
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RETURN_THROWS();
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}
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xmlDocPtr lxml_doc = xmlNewDoc((const xmlChar *) version);
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if (UNEXPECTED(lxml_doc == NULL)) {
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goto oom;
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}
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lxml_doc->encoding = xmlStrdup((const xmlChar *) encoding);
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dom_object *intern = php_dom_instantiate_object_helper(
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return_value,
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dom_xml_document_class_entry,
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(xmlNodePtr) lxml_doc,
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NULL
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);
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intern->document->is_modern_api_class = true;
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return;
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oom:
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php_dom_throw_error(INVALID_STATE_ERR, 1);
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RETURN_THROWS();
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}
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static void load_from_helper(INTERNAL_FUNCTION_PARAMETERS, int mode)
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{
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const char *source, *override_encoding = NULL;
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size_t source_len, override_encoding_len;
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zend_long options = 0;
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if (zend_parse_parameters(
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ZEND_NUM_ARGS(),
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"s|lp!",
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&source,
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&source_len,
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&options,
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&override_encoding,
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&override_encoding_len
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) == FAILURE) {
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RETURN_THROWS();
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}
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if (!source_len) {
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zend_argument_value_error(1, "must not be empty");
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RETURN_THROWS();
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}
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if (ZEND_SIZE_T_INT_OVFL(source_len)) {
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zend_argument_value_error(1, "is too long");
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RETURN_THROWS();
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}
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/* See php_libxml_streams_IO_open_wrapper(), apparently this caused issues in the past. */
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if (mode == DOM_LOAD_FILE && strstr(source, "%00")) {
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zend_argument_value_error(1, "must not contain percent-encoded NUL bytes");
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RETURN_THROWS();
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}
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if (!check_options_validity(2, options)) {
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RETURN_THROWS();
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}
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xmlCharEncodingHandlerPtr encoding = NULL;
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if (override_encoding != NULL) {
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encoding = xmlFindCharEncodingHandler(override_encoding);
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if (!encoding) {
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zend_argument_value_error(3, "must be a valid document encoding");
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RETURN_THROWS();
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}
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options |= XML_PARSE_IGNORE_ENC;
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}
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xmlDocPtr lxml_doc = dom_document_parser(NULL, mode, source, source_len, options, encoding);
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if (UNEXPECTED(lxml_doc == NULL)) {
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if (!EG(exception)) {
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if (mode == DOM_LOAD_FILE) {
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zend_throw_exception_ex(NULL, 0, "Cannot open file '%s'", source);
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} else {
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php_dom_throw_error(INVALID_STATE_ERR, 1);
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}
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}
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RETURN_THROWS();
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}
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if (lxml_doc->encoding == NULL) {
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if (override_encoding) {
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lxml_doc->encoding = xmlStrdup((const xmlChar *) override_encoding);
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} else {
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lxml_doc->encoding = xmlStrdup((const xmlChar *) "UTF-8");
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}
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}
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dom_object *intern = php_dom_instantiate_object_helper(
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return_value,
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dom_xml_document_class_entry,
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(xmlNodePtr) lxml_doc,
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NULL
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);
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intern->document->is_modern_api_class = true;
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dom_mark_namespaces_as_attributes_too(lxml_doc);
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}
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PHP_METHOD(DOM_XMLDocument, createFromString)
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{
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load_from_helper(INTERNAL_FUNCTION_PARAM_PASSTHRU, DOM_LOAD_STRING);
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}
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PHP_METHOD(DOM_XMLDocument, createFromFile)
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{
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load_from_helper(INTERNAL_FUNCTION_PARAM_PASSTHRU, DOM_LOAD_FILE);
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}
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#endif /* HAVE_LIBXML && HAVE_DOM */
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