Ensure that a user can publish_posts before making a post sticky.
Props: danielbachhuber, whyisjake, peterwilson, xknown. Prevent stored XSS through wp_targeted_link_rel(). Props: vortfu, whyisjake, peterwilsoncc, xknown, SergeyBiryukov, flaviozavan. Update `wp_kses_bad_protocol()` to recognize `:` on uri attributes, `wp_kses_bad_protocol()` makes sure to validate that uri attributes don’t contain invalid/or not allowed protocols. While this works fine in most cases, there’s a risk that by using the colon html5 named entity, one is able to bypass this function. Brings r46895 to the 5.3 branch. Props: xknown, nickdaugherty, peterwilsoncc. Prevent stored XSS in the block editor. Brings r46896 to the 5.3 branch. Prevent escaped unicode characters become unescaped in unsafe HTML during JSON decoding. Props: aduth, epiqueras. Built from https://develop.svn.wordpress.org/branches/5.2@46901 git-svn-id: http://core.svn.wordpress.org/branches/5.2@46701 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This commit is contained in:
whyisjake
parent
373c82a7c4
commit
da95cca74c
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@ -74,11 +74,11 @@ function has_blocks( $post = null ) {
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* @since 5.0.0
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* @see parse_blocks()
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*
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* @param string $block_type Full Block type to look for.
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* @param string $block_name Full Block type to look for.
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* @param int|string|WP_Post|null $post Optional. Post content, post ID, or post object. Defaults to global $post.
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* @return bool Whether the post content contains the specified block.
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*/
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function has_block( $block_type, $post = null ) {
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function has_block( $block_name, $post = null ) {
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if ( ! has_blocks( $post ) ) {
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return false;
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}
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@ -90,7 +90,30 @@ function has_block( $block_type, $post = null ) {
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}
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}
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return false !== strpos( $post, '<!-- wp:' . $block_type . ' ' );
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/*
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* Normalize block name to include namespace, if provided as non-namespaced.
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* This matches behavior for WordPress 5.0.0 - 5.3.0 in matching blocks by
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* their serialized names.
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*/
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if ( false === strpos( $block_name, '/' ) ) {
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$block_name = 'core/' . $block_name;
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}
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// Test for existence of block by its fully qualified name.
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$has_block = false !== strpos( $post, '<!-- wp:' . $block_name . ' ' );
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if ( ! $has_block ) {
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/*
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* If the given block name would serialize to a different name, test for
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* existence by the serialized form.
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*/
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$serialized_block_name = strip_core_block_namespace( $block_name );
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if ( $serialized_block_name !== $block_name ) {
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$has_block = false !== strpos( $post, '<!-- wp:' . $serialized_block_name . ' ' );
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}
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}
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return $has_block;
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}
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/**
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@ -113,6 +136,207 @@ function get_dynamic_block_names() {
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return $dynamic_block_names;
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}
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/**
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* Given an array of attributes, returns a string in the serialized attributes
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* format prepared for post content.
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*
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* The serialized result is a JSON-encoded string, with unicode escape sequence
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* substitution for characters which might otherwise interfere with embedding
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* the result in an HTML comment.
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*
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* @since 5.3.1
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*
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* @param array $attributes Attributes object.
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* @return string Serialized attributes.
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*/
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function serialize_block_attributes( $block_attributes ) {
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$encoded_attributes = json_encode( $block_attributes );
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$encoded_attributes = preg_replace( '/--/', '\\u002d\\u002d', $encoded_attributes );
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$encoded_attributes = preg_replace( '/</', '\\u003c', $encoded_attributes );
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$encoded_attributes = preg_replace( '/>/', '\\u003e', $encoded_attributes );
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$encoded_attributes = preg_replace( '/&/', '\\u0026', $encoded_attributes );
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// Regex: /\\"/
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$encoded_attributes = preg_replace( '/\\\\"/', '\\u0022', $encoded_attributes );
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return $encoded_attributes;
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}
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/**
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* Returns the block name to use for serialization. This will remove the default
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* "core/" namespace from a block name.
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*
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* @since 5.3.1
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*
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* @param string $block_name Original block name.
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* @return string Block name to use for serialization.
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*/
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function strip_core_block_namespace( $block_name = null ) {
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if ( is_string( $block_name ) && 0 === strpos( $block_name, 'core/' ) ) {
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return substr( $block_name, 5 );
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}
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return $block_name;
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}
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/**
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* Returns the content of a block, including comment delimiters.
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*
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* @since 5.3.1
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*
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* @param string $block_name Block name.
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* @param array $attributes Block attributes.
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* @param string $content Block save content.
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* @return string Comment-delimited block content.
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*/
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function get_comment_delimited_block_content( $block_name = null, $block_attributes, $block_content ) {
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if ( is_null( $block_name ) ) {
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return $block_content;
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}
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$serialized_block_name = strip_core_block_namespace( $block_name );
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$serialized_attributes = empty( $block_attributes ) ? '' : serialize_block_attributes( $block_attributes ) . ' ';
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if ( empty( $block_content ) ) {
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return sprintf( '<!-- wp:%s %s/-->', $serialized_block_name, $serialized_attributes );
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}
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return sprintf(
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'<!-- wp:%s %s-->%s<!-- /wp:%s -->',
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$serialized_block_name,
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$serialized_attributes,
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$block_content,
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$serialized_block_name
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);
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}
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/**
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* Returns the content of a block, including comment delimiters, serializing all
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* attributes from the given parsed block.
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*
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* This should be used when preparing a block to be saved to post content.
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* Prefer `render_block` when preparing a block for display. Unlike
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* `render_block`, this does not evaluate a block's `render_callback`, and will
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* instead preserve the markup as parsed.
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*
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* @since 5.3.1
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*
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* @param WP_Block_Parser_Block $block A single parsed block object.
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* @return string String of rendered HTML.
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*/
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function serialize_block( $block ) {
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$block_content = '';
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$index = 0;
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foreach ( $block['innerContent'] as $chunk ) {
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$block_content .= is_string( $chunk ) ? $chunk : serialize_block( $block['innerBlocks'][ $index++ ] );
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}
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if ( ! is_array( $block['attrs'] ) ) {
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$block['attrs'] = array();
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}
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return get_comment_delimited_block_content(
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$block['blockName'],
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$block['attrs'],
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$block_content
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);
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}
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/**
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* Returns a joined string of the aggregate serialization of the given parsed
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* blocks.
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*
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* @since 5.3.1
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*
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* @param WP_Block_Parser_Block[] $blocks Parsed block objects.
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* @return string String of rendered HTML.
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*/
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function serialize_blocks( $blocks ) {
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return implode( '', array_map( 'serialize_block', $blocks ) );
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}
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/**
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* Filters and sanitizes block content to remove non-allowable HTML from
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* parsed block attribute values.
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*
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* @since 5.3.1
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*
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* @param string $text Text that may contain block content.
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* @param array[]|string $allowed_html An array of allowed HTML elements
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* and attributes, or a context name
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* such as 'post'.
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* @param string[] $allowed_protocols Array of allowed URL protocols.
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* @return string The filtered and sanitized content result.
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*/
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function filter_block_content( $text, $allowed_html = 'post', $allowed_protocols = array() ) {
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$result = '';
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$blocks = parse_blocks( $text );
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foreach ( $blocks as $block ) {
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$block = filter_block_kses( $block, $allowed_html, $allowed_protocols );
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$result .= serialize_block( $block );
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}
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return $result;
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}
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/**
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* Filters and sanitizes a parsed block to remove non-allowable HTML from block
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* attribute values.
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*
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* @since 5.3.1
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*
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* @param WP_Block_Parser_Block $block The parsed block object.
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* @param array[]|string $allowed_html An array of allowed HTML
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* elements and attributes, or a
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* context name such as 'post'.
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* @param string[] $allowed_protocols Allowed URL protocols.
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* @return array The filtered and sanitized block object result.
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*/
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function filter_block_kses( $block, $allowed_html, $allowed_protocols = array() ) {
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$block['attrs'] = filter_block_kses_value( $block['attrs'], $allowed_html, $allowed_protocols );
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if ( is_array( $block['innerBlocks'] ) ) {
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foreach ( $block['innerBlocks'] as $i => $inner_block ) {
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$block['innerBlocks'][ $i ] = filter_block_kses( $inner_block, $allowed_html, $allowed_protocols );
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}
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}
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return $block;
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}
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/**
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* Filters and sanitizes a parsed block attribute value to remove non-allowable
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* HTML.
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*
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* @since 5.3.1
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*
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* @param mixed $value The attribute value to filter.
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* @param array[]|string $allowed_html An array of allowed HTML elements
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* and attributes, or a context name
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* such as 'post'.
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* @param string[] $allowed_protocols Array of allowed URL protocols.
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* @return array The filtered and sanitized result.
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*/
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function filter_block_kses_value( $value, $allowed_html, $allowed_protocols = array() ) {
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if ( is_array( $value ) ) {
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foreach ( $value as $key => $inner_value ) {
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$filtered_key = filter_block_kses_value( $key, $allowed_html, $allowed_protocols );
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$filtered_value = filter_block_kses_value( $inner_value, $allowed_html, $allowed_protocols );
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if ( $filtered_key !== $key ) {
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unset( $value[ $key ] );
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}
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$value[ $filtered_key ] = $filtered_value;
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}
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} elseif ( is_string( $value ) ) {
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return wp_kses( $value, $allowed_html, $allowed_protocols );
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}
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return $value;
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}
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/**
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* Parses blocks out of a content string, and renders those appropriate for the excerpt.
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*
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@ -245,6 +245,7 @@ add_filter( 'option_siteurl', '_config_wp_siteurl' );
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add_filter( 'tiny_mce_before_init', '_mce_set_direction' );
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add_filter( 'teeny_mce_before_init', '_mce_set_direction' );
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add_filter( 'pre_kses', 'wp_pre_kses_less_than' );
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add_filter( 'pre_kses', 'wp_pre_kses_block_attributes', 10, 3 );
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add_filter( 'sanitize_title', 'sanitize_title_with_dashes', 10, 3 );
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add_action( 'check_comment_flood', 'check_comment_flood_db', 10, 4 );
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add_filter( 'comment_flood_filter', 'wp_throttle_comment_flood', 10, 3 );
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|
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@ -3043,8 +3043,26 @@ function wp_rel_nofollow_callback( $matches ) {
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*/
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function wp_targeted_link_rel( $text ) {
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// Don't run (more expensive) regex if no links with targets.
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if ( stripos( $text, 'target' ) !== false && stripos( $text, '<a ' ) !== false ) {
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$text = preg_replace_callback( '|<a\s([^>]*target\s*=[^>]*)>|i', 'wp_targeted_link_rel_callback', $text );
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if ( stripos( $text, 'target' ) === false || stripos( $text, '<a ' ) === false || is_serialized( $text ) ) {
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return $text;
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}
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$script_and_style_regex = '/<(script|style).*?<\/\\1>/si';
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preg_match_all( $script_and_style_regex, $text, $matches );
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$extra_parts = $matches[0];
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$html_parts = preg_split( $script_and_style_regex, $text );
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foreach ( $html_parts as &$part ) {
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$part = preg_replace_callback( '|<a\s([^>]*target\s*=[^>]*)>|i', 'wp_targeted_link_rel_callback', $part );
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}
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$text = '';
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for ( $i = 0; $i < count( $html_parts ); $i++ ) {
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$text .= $html_parts[ $i ];
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if ( isset( $extra_parts[ $i ] ) ) {
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$text .= $extra_parts[ $i ];
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}
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}
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return $text;
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@ -3063,7 +3081,16 @@ function wp_targeted_link_rel( $text ) {
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*/
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function wp_targeted_link_rel_callback( $matches ) {
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$link_html = $matches[1];
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$rel_match = array();
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$original_link_html = $link_html;
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// Consider the html escaped if there are no unescaped quotes
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$is_escaped = ! preg_match( '/(^|[^\\\\])[\'"]/', $link_html );
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if ( $is_escaped ) {
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// Replace only the quotes so that they are parsable by wp_kses_hair, leave the rest as is
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$link_html = preg_replace( '/\\\\([\'"])/', '$1', $link_html );
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}
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$atts = wp_kses_hair( $link_html, wp_allowed_protocols() );
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/**
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* Filters the rel values that are added to links with `target` attribute.
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@ -3075,35 +3102,21 @@ function wp_targeted_link_rel_callback( $matches ) {
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*/
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$rel = apply_filters( 'wp_targeted_link_rel', 'noopener noreferrer', $link_html );
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// Avoid additional regex if the filter removes rel values.
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if ( ! $rel ) {
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return "<a $link_html>";
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// Return early if no rel values to be added or if no actual target attribute
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if ( ! $rel || ! isset( $atts['target'] ) ) {
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return "<a $original_link_html>";
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}
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// Value with delimiters, spaces around are optional.
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$attr_regex = '|rel\s*=\s*?(\\\\{0,1}["\'])(.*?)\\1|i';
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preg_match( $attr_regex, $link_html, $rel_match );
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if ( empty( $rel_match[0] ) ) {
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// No delimiters, try with a single value and spaces, because `rel = va"lue` is totally fine...
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$attr_regex = '|rel\s*=(\s*)([^\s]*)|i';
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preg_match( $attr_regex, $link_html, $rel_match );
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if ( isset( $atts['rel'] ) ) {
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$all_parts = preg_split( '/\s/', "{$atts['rel']['value']} $rel", -1, PREG_SPLIT_NO_EMPTY );
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$rel = implode( ' ', array_unique( $all_parts ) );
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}
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if ( ! empty( $rel_match[0] ) ) {
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$parts = preg_split( '|\s+|', strtolower( $rel_match[2] ) );
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$parts = array_map( 'esc_attr', $parts );
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$needed = explode( ' ', $rel );
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$parts = array_unique( array_merge( $parts, $needed ) );
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$delimiter = trim( $rel_match[1] ) ? $rel_match[1] : '"';
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$rel = 'rel=' . $delimiter . trim( implode( ' ', $parts ) ) . $delimiter;
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$link_html = str_replace( $rel_match[0], $rel, $link_html );
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} elseif ( preg_match( '|target\s*=\s*?\\\\"|', $link_html ) ) {
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$link_html .= " rel=\\\"$rel\\\"";
|
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} elseif ( preg_match( '#(target|href)\s*=\s*?\'#', $link_html ) ) {
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$link_html .= " rel='$rel'";
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} else {
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$link_html .= " rel=\"$rel\"";
|
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$atts['rel']['whole'] = 'rel="' . esc_attr( $rel ) . '"';
|
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$link_html = join( ' ', array_column( $atts, 'whole' ) );
|
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|
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if ( $is_escaped ) {
|
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$link_html = preg_replace( '/[\'"]/', '\\\\$0', $link_html );
|
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}
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|
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return "<a $link_html>";
|
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|
|
@ -4807,6 +4820,31 @@ function wp_pre_kses_less_than_callback( $matches ) {
|
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return $matches[0];
|
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}
|
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|
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/**
|
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* Remove non-allowable HTML from parsed block attribute values when filtering
|
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* in the post context.
|
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*
|
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* @since 5.3.1
|
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*
|
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* @param string $string Content to be run through KSES.
|
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* @param array[]|string $allowed_html An array of allowed HTML elements
|
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* and attributes, or a context name
|
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* such as 'post'.
|
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* @param string[] $allowed_protocols Array of allowed URL protocols.
|
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* @return string Filtered text to run through KSES.
|
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*/
|
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function wp_pre_kses_block_attributes( $string, $allowed_html, $allowed_protocols ) {
|
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/*
|
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* `filter_block_content` is expected to call `wp_kses`. Temporarily remove
|
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* the filter to avoid recursion.
|
||||
*/
|
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remove_filter( 'pre_kses', 'wp_pre_kses_block_attributes', 10 );
|
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$string = filter_block_content( $string, $allowed_html, $allowed_protocols );
|
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add_filter( 'pre_kses', 'wp_pre_kses_block_attributes', 10, 3 );
|
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|
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return $string;
|
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}
|
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|
||||
/**
|
||||
* WordPress implementation of PHP sprintf() with filters.
|
||||
*
|
||||
|
|
|
|||
|
|
@ -1658,7 +1658,7 @@ function wp_kses_html_error( $string ) {
|
|||
*/
|
||||
function wp_kses_bad_protocol_once( $string, $allowed_protocols, $count = 1 ) {
|
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$string = preg_replace( '/(�*58(?![;0-9])|�*3a(?![;a-f0-9]))/i', '$1;', $string );
|
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$string2 = preg_split( '/:|�*58;|�*3a;/i', $string, 2 );
|
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$string2 = preg_split( '/:|�*58;|�*3a;|:/i', $string, 2 );
|
||||
if ( isset( $string2[1] ) && ! preg_match( '%/\?%', $string2[0] ) ) {
|
||||
$string = trim( $string2[1] );
|
||||
$protocol = wp_kses_bad_protocol_once2( $string2[0], $allowed_protocols );
|
||||
|
|
|
|||
|
|
@ -499,7 +499,7 @@ class WP_REST_Posts_Controller extends WP_REST_Controller {
|
|||
return new WP_Error( 'rest_cannot_edit_others', __( 'Sorry, you are not allowed to create posts as this user.' ), array( 'status' => rest_authorization_required_code() ) );
|
||||
}
|
||||
|
||||
if ( ! empty( $request['sticky'] ) && ! current_user_can( $post_type->cap->edit_others_posts ) ) {
|
||||
if ( ! empty( $request['sticky'] ) && ! current_user_can( $post_type->cap->edit_others_posts ) && ! current_user_can( $post_type->cap->publish_posts ) ) {
|
||||
return new WP_Error( 'rest_cannot_assign_sticky', __( 'Sorry, you are not allowed to make posts sticky.' ), array( 'status' => rest_authorization_required_code() ) );
|
||||
}
|
||||
|
||||
|
|
@ -654,7 +654,7 @@ class WP_REST_Posts_Controller extends WP_REST_Controller {
|
|||
return new WP_Error( 'rest_cannot_edit_others', __( 'Sorry, you are not allowed to update posts as this user.' ), array( 'status' => rest_authorization_required_code() ) );
|
||||
}
|
||||
|
||||
if ( ! empty( $request['sticky'] ) && ! current_user_can( $post_type->cap->edit_others_posts ) ) {
|
||||
if ( ! empty( $request['sticky'] ) && ! current_user_can( $post_type->cap->edit_others_posts ) && ! current_user_can( $post_type->cap->publish_posts ) ) {
|
||||
return new WP_Error( 'rest_cannot_assign_sticky', __( 'Sorry, you are not allowed to make posts sticky.' ), array( 'status' => rest_authorization_required_code() ) );
|
||||
}
|
||||
|
||||
|
|
@ -956,7 +956,7 @@ class WP_REST_Posts_Controller extends WP_REST_Controller {
|
|||
* @return stdClass|WP_Error Post object or WP_Error.
|
||||
*/
|
||||
protected function prepare_item_for_database( $request ) {
|
||||
$prepared_post = new stdClass;
|
||||
$prepared_post = new stdClass();
|
||||
|
||||
// Post ID.
|
||||
if ( isset( $request['id'] ) ) {
|
||||
|
|
|
|||
Loading…
Reference in New Issue