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Add: Global styles user content escaping. 

This commit adds global styles user content escaping. In addition, it ports the logic on the Gutenberg plugin implemented on WordPress/gutenberg#28061 to the core.
The logic tries to follow what was done for standard post content.

See #54336.
Props oandregal.
Built from https://develop.svn.wordpress.org/trunk@52052


git-svn-id: http://core.svn.wordpress.org/trunk@51644 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This commit is contained in:
jorgefilipecosta 2021-11-08 21:24:59 +00:00
parent db5d8b5e03
commit d8da1f0ac9
2 changed files with 30 additions and 1 deletions
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29
wp-includes/kses.php
View File

@ -2081,6 +2081,31 @@ function wp_filter_post_kses( $data ) {
return addslashes( wp_kses( stripslashes( $data ), 'post' ) );
}
/**
* Sanitizes global styles user content removing unsafe rules.
*
* @param string $data Post content to filter.
* @return string Filtered post content with unsafe rules removed.
*/
function wp_filter_global_styles_post( $data ) {
$decoded_data = json_decode( wp_unslash( $data ), true );
$json_decoding_error = json_last_error();
if (
JSON_ERROR_NONE === $json_decoding_error &&
is_array( $decoded_data ) &&
isset( $decoded_data['isGlobalStylesUserThemeJSON'] ) &&
$decoded_data['isGlobalStylesUserThemeJSON']
) {
unset( $decoded_data['isGlobalStylesUserThemeJSON'] );
$data_to_encode = WP_Theme_JSON::remove_insecure_properties( $decoded_data );
$data_to_encode['isGlobalStylesUserThemeJSON'] = true;
return wp_slash( wp_json_encode( $data_to_encode ) );
}
return $data;
}
/**
* Sanitizes content for allowed HTML tags for post content.
*
@ -2151,8 +2176,10 @@ function kses_init_filters() {
// Post filtering.
add_filter( 'content_save_pre', 'wp_filter_post_kses' );
add_filter( 'content_save_pre', 'wp_filter_global_styles_post' );
add_filter( 'excerpt_save_pre', 'wp_filter_post_kses' );
add_filter( 'content_filtered_save_pre', 'wp_filter_post_kses' );
add_filter( 'content_filtered_save_pre', 'wp_filter_global_styles_post' );
}
/**
@ -2177,8 +2204,10 @@ function kses_remove_filters() {
// Post filtering.
remove_filter( 'content_save_pre', 'wp_filter_post_kses' );
remove_filter( 'content_save_pre', 'wp_filter_global_styles_post' );
remove_filter( 'excerpt_save_pre', 'wp_filter_post_kses' );
remove_filter( 'content_filtered_save_pre', 'wp_filter_post_kses' );
remove_filter( 'content_filtered_save_pre', 'wp_filter_global_styles_post' );
}
/**

2
wp-includes/version.php
View File

@ -16,7 +16,7 @@
*
* @global string $wp_version
*/
$wp_version = '5.9-alpha-52051';
$wp_version = '5.9-alpha-52052';
/**
* Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.