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-rw-r--r--library/HTMLPurifier/Strategy/RemoveForeignElements.php207
1 files changed, 0 insertions, 207 deletions
diff --git a/library/HTMLPurifier/Strategy/RemoveForeignElements.php b/library/HTMLPurifier/Strategy/RemoveForeignElements.php
deleted file mode 100644
index 1a8149ecc..000000000
--- a/library/HTMLPurifier/Strategy/RemoveForeignElements.php
+++ /dev/null
@@ -1,207 +0,0 @@
-<?php
-
-/**
- * Removes all unrecognized tags from the list of tokens.
- *
- * This strategy iterates through all the tokens and removes unrecognized
- * tokens. If a token is not recognized but a TagTransform is defined for
- * that element, the element will be transformed accordingly.
- */
-
-class HTMLPurifier_Strategy_RemoveForeignElements extends HTMLPurifier_Strategy
-{
-
- /**
- * @param HTMLPurifier_Token[] $tokens
- * @param HTMLPurifier_Config $config
- * @param HTMLPurifier_Context $context
- * @return array|HTMLPurifier_Token[]
- */
- public function execute($tokens, $config, $context)
- {
- $definition = $config->getHTMLDefinition();
- $generator = new HTMLPurifier_Generator($config, $context);
- $result = array();
-
- $escape_invalid_tags = $config->get('Core.EscapeInvalidTags');
- $remove_invalid_img = $config->get('Core.RemoveInvalidImg');
-
- // currently only used to determine if comments should be kept
- $trusted = $config->get('HTML.Trusted');
- $comment_lookup = $config->get('HTML.AllowedComments');
- $comment_regexp = $config->get('HTML.AllowedCommentsRegexp');
- $check_comments = $comment_lookup !== array() || $comment_regexp !== null;
-
- $remove_script_contents = $config->get('Core.RemoveScriptContents');
- $hidden_elements = $config->get('Core.HiddenElements');
-
- // remove script contents compatibility
- if ($remove_script_contents === true) {
- $hidden_elements['script'] = true;
- } elseif ($remove_script_contents === false && isset($hidden_elements['script'])) {
- unset($hidden_elements['script']);
- }
-
- $attr_validator = new HTMLPurifier_AttrValidator();
-
- // removes tokens until it reaches a closing tag with its value
- $remove_until = false;
-
- // converts comments into text tokens when this is equal to a tag name
- $textify_comments = false;
-
- $token = false;
- $context->register('CurrentToken', $token);
-
- $e = false;
- if ($config->get('Core.CollectErrors')) {
- $e =& $context->get('ErrorCollector');
- }
-
- foreach ($tokens as $token) {
- if ($remove_until) {
- if (empty($token->is_tag) || $token->name !== $remove_until) {
- continue;
- }
- }
- if (!empty($token->is_tag)) {
- // DEFINITION CALL
-
- // before any processing, try to transform the element
- if (isset($definition->info_tag_transform[$token->name])) {
- $original_name = $token->name;
- // there is a transformation for this tag
- // DEFINITION CALL
- $token = $definition->
- info_tag_transform[$token->name]->transform($token, $config, $context);
- if ($e) {
- $e->send(E_NOTICE, 'Strategy_RemoveForeignElements: Tag transform', $original_name);
- }
- }
-
- if (isset($definition->info[$token->name])) {
- // mostly everything's good, but
- // we need to make sure required attributes are in order
- if (($token instanceof HTMLPurifier_Token_Start || $token instanceof HTMLPurifier_Token_Empty) &&
- $definition->info[$token->name]->required_attr &&
- ($token->name != 'img' || $remove_invalid_img) // ensure config option still works
- ) {
- $attr_validator->validateToken($token, $config, $context);
- $ok = true;
- foreach ($definition->info[$token->name]->required_attr as $name) {
- if (!isset($token->attr[$name])) {
- $ok = false;
- break;
- }
- }
- if (!$ok) {
- if ($e) {
- $e->send(
- E_ERROR,
- 'Strategy_RemoveForeignElements: Missing required attribute',
- $name
- );
- }
- continue;
- }
- $token->armor['ValidateAttributes'] = true;
- }
-
- if (isset($hidden_elements[$token->name]) && $token instanceof HTMLPurifier_Token_Start) {
- $textify_comments = $token->name;
- } elseif ($token->name === $textify_comments && $token instanceof HTMLPurifier_Token_End) {
- $textify_comments = false;
- }
-
- } elseif ($escape_invalid_tags) {
- // invalid tag, generate HTML representation and insert in
- if ($e) {
- $e->send(E_WARNING, 'Strategy_RemoveForeignElements: Foreign element to text');
- }
- $token = new HTMLPurifier_Token_Text(
- $generator->generateFromToken($token)
- );
- } else {
- // check if we need to destroy all of the tag's children
- // CAN BE GENERICIZED
- if (isset($hidden_elements[$token->name])) {
- if ($token instanceof HTMLPurifier_Token_Start) {
- $remove_until = $token->name;
- } elseif ($token instanceof HTMLPurifier_Token_Empty) {
- // do nothing: we're still looking
- } else {
- $remove_until = false;
- }
- if ($e) {
- $e->send(E_ERROR, 'Strategy_RemoveForeignElements: Foreign meta element removed');
- }
- } else {
- if ($e) {
- $e->send(E_ERROR, 'Strategy_RemoveForeignElements: Foreign element removed');
- }
- }
- continue;
- }
- } elseif ($token instanceof HTMLPurifier_Token_Comment) {
- // textify comments in script tags when they are allowed
- if ($textify_comments !== false) {
- $data = $token->data;
- $token = new HTMLPurifier_Token_Text($data);
- } elseif ($trusted || $check_comments) {
- // always cleanup comments
- $trailing_hyphen = false;
- if ($e) {
- // perform check whether or not there's a trailing hyphen
- if (substr($token->data, -1) == '-') {
- $trailing_hyphen = true;
- }
- }
- $token->data = rtrim($token->data, '-');
- $found_double_hyphen = false;
- while (strpos($token->data, '--') !== false) {
- $found_double_hyphen = true;
- $token->data = str_replace('--', '-', $token->data);
- }
- if ($trusted || !empty($comment_lookup[trim($token->data)]) ||
- ($comment_regexp !== null && preg_match($comment_regexp, trim($token->data)))) {
- // OK good
- if ($e) {
- if ($trailing_hyphen) {
- $e->send(
- E_NOTICE,
- 'Strategy_RemoveForeignElements: Trailing hyphen in comment removed'
- );
- }
- if ($found_double_hyphen) {
- $e->send(E_NOTICE, 'Strategy_RemoveForeignElements: Hyphens in comment collapsed');
- }
- }
- } else {
- if ($e) {
- $e->send(E_NOTICE, 'Strategy_RemoveForeignElements: Comment removed');
- }
- continue;
- }
- } else {
- // strip comments
- if ($e) {
- $e->send(E_NOTICE, 'Strategy_RemoveForeignElements: Comment removed');
- }
- continue;
- }
- } elseif ($token instanceof HTMLPurifier_Token_Text) {
- } else {
- continue;
- }
- $result[] = $token;
- }
- if ($remove_until && $e) {
- // we removed tokens until the end, throw error
- $e->send(E_ERROR, 'Strategy_RemoveForeignElements: Token removed to end', $remove_until);
- }
- $context->destroy('CurrentToken');
- return $result;
- }
-}
-
-// vim: et sw=4 sts=4