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Customize: Add additional filters to Customizer to prevent JSON corruption. 

User: Invalidate `user_activation_key` on password update.
Query: Ensure that only a single post can be returned on date/time based queries.
Cache API: Ensure proper escaping around the stats method in the cache API.
Formatting: Expand `sanitize_file_name` to have better support for utf8 characters.

Brings the changes in [47633], [47634], [47635], [47637], and [47638] to the 4.8 branch.

Props: batmoo, ehti, nickdaugherty, peterwilsoncc, sergeybiryukov, sstoqnov, westi, westonruter, whyisjake, whyisjake, xknown.

Built from https://develop.svn.wordpress.org/branches/4.8@47649


git-svn-id: http://core.svn.wordpress.org/branches/4.8@47424 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This commit is contained in:
whyisjake 2020-04-29 16:19:21 +00:00
parent 9548cae7ec
commit 166492f860
6 changed files with 89 additions and 23 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
wp-includes/cache.php
View File

@ -691,7 +691,7 @@ class WP_Object_Cache {
echo "</p>";
echo '<ul>';
foreach ($this->cache as $group => $cache) {
echo "<li><strong>Group:</strong> $group - ( " . number_format( strlen( serialize( $cache ) ) / KB_IN_BYTES, 2 ) . 'k )</li>';
echo '<li><strong>Group:</strong> ' . esc_html( $group ) . ' - ( ' . number_format( strlen( serialize( $cache ) ) / KB_IN_BYTES, 2 ) . 'k )</li>';
}
echo '</ul>';
}

64
wp-includes/class-wp-customize-manager.php
View File

@ -2527,13 +2527,12 @@ final class WP_Customize_Manager {
$this->store_changeset_revision = $allow_revision;
add_filter( 'wp_save_post_revision_post_has_changed', array( $this, '_filter_revision_post_has_changed' ), 5, 3 );
// Update the changeset post. The publish_customize_changeset action will cause the settings in the changeset to be saved via WP_Customize_Setting::save().
$has_kses = ( false !== has_filter( 'content_save_pre', 'wp_filter_post_kses' ) );
if ( $has_kses ) {
kses_remove_filters(); // Prevent KSES from corrupting JSON in post_content.
}
// Note that updating a post with publish status will trigger WP_Customize_Manager::publish_changeset_values().
/*
* Update the changeset post. The publish_customize_changeset action will cause the settings in the
* changeset to be saved via WP_Customize_Setting::save(). Updating a post with publish status will
* trigger WP_Customize_Manager::publish_changeset_values().
*/
add_filter( 'wp_insert_post_data', array( $this, 'preserve_insert_changeset_post_content' ), 5, 3 );
if ( $changeset_post_id ) {
$post_array['edit_date'] = true; // Prevent date clearing.
$r = wp_update_post( wp_slash( $post_array ), true );
@ -2543,9 +2542,9 @@ final class WP_Customize_Manager {
$this->_changeset_post_id = $r; // Update cached post ID for the loaded changeset.
}
}
if ( $has_kses ) {
kses_init_filters();
}
remove_filter( 'wp_insert_post_data', array( $this, 'preserve_insert_changeset_post_content' ), 5 );
$this->_changeset_data = null; // Reset so WP_Customize_Manager::changeset_data() will re-populate with updated contents.
remove_filter( 'wp_save_post_revision_post_has_changed', array( $this, '_filter_revision_post_has_changed' ) );
@ -2562,6 +2561,51 @@ final class WP_Customize_Manager {
return $response;
}
/**
* Preserve the initial JSON post_content passed to save into the post.
*
* This is needed to prevent KSES and other {@see 'content_save_pre'} filters
* from corrupting JSON data.
*
* Note that WP_Customize_Manager::validate_setting_values() have already
* run on the setting values being serialized as JSON into the post content
* so it is pre-sanitized.
*
* Also, the sanitization logic is re-run through the respective
* WP_Customize_Setting::sanitize() method when being read out of the
* changeset, via WP_Customize_Manager::post_value(), and this sanitized
* value will also be sent into WP_Customize_Setting::update() for
* persisting to the DB.
*
* Multiple users can collaborate on a single changeset, where one user may
* have the unfiltered_html capability but another may not. A user with
* unfiltered_html may add a script tag to some field which needs to be kept
* intact even when another user updates the changeset to modify another field
* when they do not have unfiltered_html.
*
* @since 5.4.1
*
* @param array $data An array of slashed and processed post data.
* @param array $postarr An array of sanitized (and slashed) but otherwise unmodified post data.
* @param array $unsanitized_postarr An array of slashed yet *unsanitized* and unprocessed post data as originally passed to wp_insert_post().
* @return array Filtered post data.
*/
public function preserve_insert_changeset_post_content( $data, $postarr, $unsanitized_postarr ) {
if (
isset( $data['post_type'] ) &&
isset( $unsanitized_postarr['post_content'] ) &&
'customize_changeset' === $data['post_type'] ||
(
'revision' === $data['post_type'] &&
! empty( $data['post_parent'] ) &&
'customize_changeset' === get_post_type( $data['post_parent'] )
)
) {
$data['post_content'] = $unsanitized_postarr['post_content'];
}
return $data;
}
/**
* Whether a changeset revision should be made.
*

4
wp-includes/class-wp-query.php
View File

@ -808,10 +808,6 @@ class WP_Query {
$this->is_single = true;
} elseif ( $qv['p'] ) {
$this->is_single = true;
} elseif ( ('' !== $qv['hour']) && ('' !== $qv['minute']) &&('' !== $qv['second']) && ('' != $qv['year']) && ('' != $qv['monthnum']) && ('' != $qv['day']) ) {
// If year, month, day, hour, minute, and second are set, a single
// post is being queried.
$this->is_single = true;
} elseif ( '' != $qv['pagename'] || !empty($qv['page_id']) ) {
$this->is_page = true;
$this->is_single = false;

19
wp-includes/formatting.php
View File

@ -1762,6 +1762,24 @@ function remove_accents( $string ) {
function sanitize_file_name( $filename ) {
$filename_raw = $filename;
$special_chars = array("?", "[", "]", "/", "\\", "=", "<", ">", ":", ";", ",", "'", "\"", "&", "$", "#", "*", "(", ")", "|", "~", "`", "!", "{", "}", "%", "+", chr(0));
// Check for support for utf8 in the installed PCRE library once and store the result in a static.
static $utf8_pcre = null;
if ( ! isset( $utf8_pcre ) ) {
// phpcs:ignore WordPress.PHP.NoSilencedErrors.Discouraged
$utf8_pcre = @preg_match( '/^./u', 'a' );
}
if ( ! seems_utf8( $filename ) ) {
$_ext = pathinfo( $filename, PATHINFO_EXTENSION );
$_name = pathinfo( $filename, PATHINFO_FILENAME );
$filename = sanitize_title_with_dashes( $_name ) . '.' . $_ext;
}
if ( $utf8_pcre ) {
$filename = preg_replace( "#\x{00a0}#siu", ' ', $filename );
}
/**
* Filters the list of characters to remove from a filename.
*
@ -1771,7 +1789,6 @@ function sanitize_file_name( $filename ) {
* @param string $filename_raw Filename as it was passed into sanitize_file_name().
*/
$special_chars = apply_filters( 'sanitize_file_name_chars', $special_chars, $filename_raw );
$filename = preg_replace( "#\x{00a0}#siu", ' ', $filename );
$filename = str_replace( $special_chars, '', $filename );
$filename = str_replace( array( '%20', '+' ), '-', $filename );
$filename = preg_replace( '/[\r\n\t -]+/', '-', $filename );

21
wp-includes/post.php
View File

@ -2973,6 +2973,9 @@ function wp_get_recent_posts( $args = array(), $output = ARRAY_A ) {
function wp_insert_post( $postarr, $wp_error = false ) {
global $wpdb;
// Capture original pre-sanitized array for passing into filters.
$unsanitized_postarr = $postarr;
$user_id = get_current_user_id();
$defaults = array(
@ -3269,21 +3272,27 @@ function wp_insert_post( $postarr, $wp_error = false ) {
* Filters attachment post data before it is updated in or added to the database.
*
* @since 3.9.0
* @since 5.4.1 `$unsanitized_postarr` argument added.
*
* @param array $data An array of sanitized attachment post data.
* @param array $postarr An array of unsanitized attachment post data.
* @param array $data An array of slashed, sanitized, and processed attachment post data.
* @param array $postarr An array of slashed and sanitized attachment post data, but not processed.
* @param array $unsanitized_postarr An array of slashed yet *unsanitized* and unprocessed attachment post data
* as originally passed to wp_insert_post().
*/
$data = apply_filters( 'wp_insert_attachment_data', $data, $postarr );
$data = apply_filters( 'wp_insert_attachment_data', $data, $postarr, $unsanitized_postarr );
} else {
/**
* Filters slashed post data just before it is inserted into the database.
*
* @since 2.7.0
* @since 5.4.1 `$unsanitized_postarr` argument added.
*
* @param array $data An array of slashed post data.
* @param array $postarr An array of sanitized, but otherwise unmodified post data.
* @param array $data An array of slashed, sanitized, and processed post data.
* @param array $postarr An array of sanitized (and slashed) but otherwise unmodified post data.
* @param array $unsanitized_postarr An array of slashed yet *unsanitized* and unprocessed post data as
* originally passed to wp_insert_post().
*/
$data = apply_filters( 'wp_insert_post_data', $data, $postarr );
$data = apply_filters( 'wp_insert_post_data', $data, $postarr, $unsanitized_postarr );
}
$data = wp_unslash( $data );
$where = array( 'ID' => $post_ID );

2
wp-includes/user.php
View File

@ -1638,7 +1638,7 @@ function wp_insert_user( $userdata ) {
$data = wp_unslash( $compacted );
if ( $update ) {
if ( $user_email !== $old_user_data->user_email ) {
if ( $user_email !== $old_user_data->user_email || $user_pass !== $old_user_data->user_pass ) {
$data['user_activation_key'] = '';
}
$wpdb->update( $wpdb->users, $data, compact( 'ID' ) );