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post.php
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<?php
/**
* WordPress Post Administration API.
*
* @package WordPress
* @subpackage Administration
*/
/**
* Rename $_POST data from form names to DB post columns.
*
* Manipulates $_POST directly.
*
* @package WordPress
* @since 2.6.0
*
* @param bool $update Are we updating a pre-existing post?
* @param array $post_data Array of post data. Defaults to the contents of $_POST.
* @return object|bool WP_Error on failure, true on success.
*/
function _wp_translate_postdata( $update = false, $post_data = null ) {
if ( empty($post_data) )
$post_data = &$_POST;
if ( $update )
$post_data['ID'] = (int) $post_data['post_ID'];
$ptype = get_post_type_object( $post_data['post_type'] );
if ( $update && ! current_user_can( 'edit_post', $post_data['ID'] ) ) {
if ( 'page' == $post_data['post_type'] )
return new WP_Error( 'edit_others_pages', __( 'You are not allowed to edit pages as this user.' ) );
else
return new WP_Error( 'edit_others_posts', __( 'You are not allowed to edit posts as this user.' ) );
} elseif ( ! $update && ! current_user_can( $ptype->cap->create_posts ) ) {
if ( 'page' == $post_data['post_type'] )
return new WP_Error( 'edit_others_pages', __( 'You are not allowed to create pages as this user.' ) );
else
return new WP_Error( 'edit_others_posts', __( 'You are not allowed to create posts as this user.' ) );
}
if ( isset( $post_data['content'] ) )
$post_data['post_content'] = $post_data['content'];
if ( isset( $post_data['excerpt'] ) )
$post_data['post_excerpt'] = $post_data['excerpt'];
if ( isset( $post_data['parent_id'] ) )
$post_data['post_parent'] = (int) $post_data['parent_id'];
if ( isset($post_data['trackback_url']) )
$post_data['to_ping'] = $post_data['trackback_url'];
$post_data['user_ID'] = get_current_user_id();
if (!empty ( $post_data['post_author_override'] ) ) {
$post_data['post_author'] = (int) $post_data['post_author_override'];
} else {
if (!empty ( $post_data['post_author'] ) ) {
$post_data['post_author'] = (int) $post_data['post_author'];
} else {
$post_data['post_author'] = (int) $post_data['user_ID'];
}
}
if ( isset( $post_data['user_ID'] ) && ( $post_data['post_author'] != $post_data['user_ID'] )
&& ! current_user_can( $ptype->cap->edit_others_posts ) ) {
if ( $update ) {
if ( 'page' == $post_data['post_type'] )
return new WP_Error( 'edit_others_pages', __( 'You are not allowed to edit pages as this user.' ) );
else
return new WP_Error( 'edit_others_posts', __( 'You are not allowed to edit posts as this user.' ) );
} else {
if ( 'page' == $post_data['post_type'] )
return new WP_Error( 'edit_others_pages', __( 'You are not allowed to create pages as this user.' ) );
else
return new WP_Error( 'edit_others_posts', __( 'You are not allowed to create posts as this user.' ) );
}
}
if ( ! empty( $post_data['post_status'] ) )
$post_data['post_status'] = sanitize_key( $post_data['post_status'] );
// What to do based on which button they pressed
if ( isset($post_data['saveasdraft']) && '' != $post_data['saveasdraft'] )
$post_data['post_status'] = 'draft';
if ( isset($post_data['saveasprivate']) && '' != $post_data['saveasprivate'] )
$post_data['post_status'] = 'private';
if ( isset($post_data['publish']) && ( '' != $post_data['publish'] ) && ( !isset($post_data['post_status']) || $post_data['post_status'] != 'private' ) )
$post_data['post_status'] = 'publish';
if ( isset($post_data['advanced']) && '' != $post_data['advanced'] )
$post_data['post_status'] = 'draft';
if ( isset($post_data['pending']) && '' != $post_data['pending'] )
$post_data['post_status'] = 'pending';
if ( isset( $post_data['ID'] ) )
$post_id = $post_data['ID'];
else
$post_id = false;
$previous_status = $post_id ? get_post_field( 'post_status', $post_id ) : false;
$published_statuses = array( 'publish', 'future' );
// Posts 'submitted for approval' present are submitted to $_POST the same as if they were being published.
// Change status from 'publish' to 'pending' if user lacks permissions to publish or to resave published posts.
if ( isset($post_data['post_status']) && (in_array( $post_data['post_status'], $published_statuses ) && !current_user_can( $ptype->cap->publish_posts )) )
if ( ! in_array( $previous_status, $published_statuses ) || !current_user_can( 'edit_post', $post_id ) )
$post_data['post_status'] = 'pending';
if ( ! isset($post_data['post_status']) )
$post_data['post_status'] = $previous_status;
if (!isset( $post_data['comment_status'] ))
$post_data['comment_status'] = 'closed';
if (!isset( $post_data['ping_status'] ))
$post_data['ping_status'] = 'closed';
foreach ( array('aa', 'mm', 'jj', 'hh', 'mn') as $timeunit ) {
if ( !empty( $post_data['hidden_' . $timeunit] ) && $post_data['hidden_' . $timeunit] != $post_data[$timeunit] ) {
$post_data['edit_date'] = '1';
break;
}
}
if ( !empty( $post_data['edit_date'] ) ) {
$aa = $post_data['aa'];
$mm = $post_data['mm'];
$jj = $post_data['jj'];
$hh = $post_data['hh'];
$mn = $post_data['mn'];
$ss = $post_data['ss'];
$aa = ($aa <= 0 ) ? date('Y') : $aa;
$mm = ($mm <= 0 ) ? date('n') : $mm;
$jj = ($jj > 31 ) ? 31 : $jj;
$jj = ($jj <= 0 ) ? date('j') : $jj;
$hh = ($hh > 23 ) ? $hh -24 : $hh;
$mn = ($mn > 59 ) ? $mn -60 : $mn;
$ss = ($ss > 59 ) ? $ss -60 : $ss;
$post_data['post_date'] = sprintf( "%04d-%02d-%02d %02d:%02d:%02d", $aa, $mm, $jj, $hh, $mn, $ss );
$valid_date = wp_checkdate( $mm, $jj, $aa, $post_data['post_date'] );
if ( !$valid_date ) {
return new WP_Error( 'invalid_date', __( 'Whoops, the provided date is invalid.' ) );
}
$post_data['post_date_gmt'] = get_gmt_from_date( $post_data['post_date'] );
}
return $post_data;
}
/**
* Update an existing post with values provided in $_POST.
*
* @since 1.5.0
*
* @param array $post_data Optional.
* @return int Post ID.
*/
function edit_post( $post_data = null ) {
if ( empty($post_data) )
$post_data = &$_POST;
// Clear out any data in internal vars.
unset( $post_data['filter'] );
$post_ID = (int) $post_data['post_ID'];
$post = get_post( $post_ID );
$post_data['post_type'] = $post->post_type;
$post_data['post_mime_type'] = $post->post_mime_type;
$ptype = get_post_type_object($post_data['post_type']);
if ( !current_user_can( 'edit_post', $post_ID ) ) {
if ( 'page' == $post_data['post_type'] )
wp_die( __('You are not allowed to edit this page.' ));
else
wp_die( __('You are not allowed to edit this post.' ));
}
if ( post_type_supports( $ptype->name, 'revisions' ) ) {
$revisions = wp_get_post_revisions( $post_ID, array( 'order' => 'ASC', 'posts_per_page' => 1 ) );
$revision = current( $revisions );
// Check if the revisions have been upgraded
if ( $revisions && _wp_get_post_revision_version( $revision ) < 1 )
_wp_upgrade_revisions_of_post( $post, wp_get_post_revisions( $post_ID ) );
}
$post_data = _wp_translate_postdata( true, $post_data );
if ( is_wp_error($post_data) )
wp_die( $post_data->get_error_message() );
if ( ( empty( $post_data['action'] ) || 'autosave' != $post_data['action'] ) && 'auto-draft' == $post_data['post_status'] ) {
$post_data['post_status'] = 'draft';
}
if ( isset($post_data['visibility']) ) {
switch ( $post_data['visibility'] ) {
case 'public' :
$post_data['post_password'] = '';
break;
case 'password' :
unset( $post_data['sticky'] );
break;
case 'private' :
$post_data['post_status'] = 'private';
$post_data['post_password'] = '';
unset( $post_data['sticky'] );
break;
}
}
// Post Formats
if ( isset( $post_data['post_format'] ) )
set_post_format( $post_ID, $post_data['post_format'] );
$format_meta_urls = array( 'url', 'link_url', 'quote_source_url' );
foreach ( $format_meta_urls as $format_meta_url ) {
$keyed = '_format_' . $format_meta_url;
if ( isset( $post_data[ $keyed ] ) )
update_post_meta( $post_ID, $keyed, wp_slash( esc_url_raw( wp_unslash( $post_data[ $keyed ] ) ) ) );
}
$format_keys = array( 'quote', 'quote_source_name', 'image', 'gallery', 'audio_embed', 'video_embed' );
foreach ( $format_keys as $key ) {
$keyed = '_format_' . $key;
if ( isset( $post_data[ $keyed ] ) ) {
if ( current_user_can( 'unfiltered_html' ) )
update_post_meta( $post_ID, $keyed, $post_data[ $keyed ] );
else
update_post_meta( $post_ID, $keyed, wp_filter_post_kses( $post_data[ $keyed ] ) );
}
}
// Meta Stuff
if ( isset($post_data['meta']) && $post_data['meta'] ) {
foreach ( $post_data['meta'] as $key => $value ) {
if ( !$meta = get_post_meta_by_id( $key ) )
continue;
if ( $meta->post_id != $post_ID )
continue;
if ( is_protected_meta( $value['key'], 'post' ) || ! current_user_can( 'edit_post_meta', $post_ID, $value['key'] ) )
continue;
update_meta( $key, $value['key'], $value['value'] );
}
}
if ( isset($post_data['deletemeta']) && $post_data['deletemeta'] ) {
foreach ( $post_data['deletemeta'] as $key => $value ) {
if ( !$meta = get_post_meta_by_id( $key ) )
continue;
if ( $meta->post_id != $post_ID )
continue;
if ( is_protected_meta( $meta->meta_key, 'post' ) || ! current_user_can( 'delete_post_meta', $post_ID, $meta->meta_key ) )
continue;
delete_meta( $key );
}
}
// Attachment stuff
if ( 'attachment' == $post_data['post_type'] ) {
if ( isset( $post_data[ '_wp_attachment_image_alt' ] ) ) {
$image_alt = wp_unslash( $post_data['_wp_attachment_image_alt'] );
if ( $image_alt != get_post_meta( $post_ID, '_wp_attachment_image_alt', true ) ) {
$image_alt = wp_strip_all_tags( $image_alt, true );
// update_meta expects slashed
update_post_meta( $post_ID, '_wp_attachment_image_alt', wp_slash( $image_alt ) );
}
}
$attachment_data = isset( $post_data['attachments'][ $post_ID ] ) ? $post_data['attachments'][ $post_ID ] : array();
/** This filter is documented in wp-admin/includes/media.php */
$post_data = apply_filters( 'attachment_fields_to_save', $post_data, $attachment_data );
}
add_meta( $post_ID );
update_post_meta( $post_ID, '_edit_last', get_current_user_id() );
wp_update_post( $post_data );
// Now that we have an ID we can fix any attachment anchor hrefs
_fix_attachment_links( $post_ID );
wp_set_post_lock( $post_ID );
if ( current_user_can( $ptype->cap->edit_others_posts ) ) {
if ( ! empty( $post_data['sticky'] ) )
stick_post( $post_ID );
else
unstick_post( $post_ID );
}
return $post_ID;
}
/**
* Process the post data for the bulk editing of posts.
*
* Updates all bulk edited posts/pages, adding (but not removing) tags and
* categories. Skips pages when they would be their own parent or child.
*
* @since 2.7.0
*
* @param array $post_data Optional, the array of post data to process if not provided will use $_POST superglobal.
* @return array
*/
function bulk_edit_posts( $post_data = null ) {
global $wpdb;
if ( empty($post_data) )
$post_data = &$_POST;
if ( isset($post_data['post_type']) )
$ptype = get_post_type_object($post_data['post_type']);
else
$ptype = get_post_type_object('post');
if ( !current_user_can( $ptype->cap->edit_posts ) ) {
if ( 'page' == $ptype->name )
wp_die( __('You are not allowed to edit pages.'));
else
wp_die( __('You are not allowed to edit posts.'));
}
if ( -1 == $post_data['_status'] ) {
$post_data['post_status'] = null;
unset($post_data['post_status']);
} else {
$post_data['post_status'] = $post_data['_status'];
}
unset($post_data['_status']);
$post_IDs = array_map( 'intval', (array) $post_data['post'] );
$reset = array(
'post_author', 'post_status', 'post_password',
'post_parent', 'page_template', 'comment_status',
'ping_status', 'keep_private', 'tax_input',
'post_category', 'sticky', 'post_format',
);
foreach ( $reset as $field ) {
if ( isset($post_data[$field]) && ( '' == $post_data[$field] || -1 == $post_data[$field] ) )
unset($post_data[$field]);
}
if ( isset($post_data['post_category']) ) {
if ( is_array($post_data['post_category']) && ! empty($post_data['post_category']) )
$new_cats = array_map( 'absint', $post_data['post_category'] );
else
unset($post_data['post_category']);
}
$tax_input = array();
if ( isset($post_data['tax_input'])) {
foreach ( $post_data['tax_input'] as $tax_name => $terms ) {
if ( empty($terms) )
continue;
if ( is_taxonomy_hierarchical( $tax_name ) ) {
$tax_input[ $tax_name ] = array_map( 'absint', $terms );
} else {
$comma = _x( ',', 'tag delimiter' );
if ( ',' !== $comma )
$terms = str_replace( $comma, ',', $terms );
$tax_input[ $tax_name ] = explode( ',', trim( $terms, " \n\t\r\0\x0B," ) );
}
}
}
if ( isset($post_data['post_parent']) && ($parent = (int) $post_data['post_parent']) ) {
$pages = $wpdb->get_results("SELECT ID, post_parent FROM $wpdb->posts WHERE post_type = 'page'");
$children = array();
for ( $i = 0; $i < 50 && $parent > 0; $i++ ) {
$children[] = $parent;
foreach ( $pages as $page ) {
if ( $page->ID == $parent ) {
$parent = $page->post_parent;
break;
}
}
}
}
$updated = $skipped = $locked = array();
foreach ( $post_IDs as $post_ID ) {
$post_type_object = get_post_type_object( get_post_type( $post_ID ) );
if ( !isset( $post_type_object ) || ( isset($children) && in_array($post_ID, $children) ) || !current_user_can( 'edit_post', $post_ID ) ) {
$skipped[] = $post_ID;
continue;
}
if ( wp_check_post_lock( $post_ID ) ) {
$locked[] = $post_ID;
continue;
}
$post = get_post( $post_ID );
$tax_names = get_object_taxonomies( $post );
foreach ( $tax_names as $tax_name ) {
$taxonomy_obj = get_taxonomy($tax_name);
if ( isset( $tax_input[$tax_name]) && current_user_can( $taxonomy_obj->cap->assign_terms ) )
$new_terms = $tax_input[$tax_name];
else
$new_terms = array();
if ( $taxonomy_obj->hierarchical )
$current_terms = (array) wp_get_object_terms( $post_ID, $tax_name, array('fields' => 'ids') );
else
$current_terms = (array) wp_get_object_terms( $post_ID, $tax_name, array('fields' => 'names') );
$post_data['tax_input'][$tax_name] = array_merge( $current_terms, $new_terms );
}
if ( isset($new_cats) && in_array( 'category', $tax_names ) ) {
$cats = (array) wp_get_post_categories($post_ID);
$post_data['post_category'] = array_unique( array_merge($cats, $new_cats) );
unset( $post_data['tax_input']['category'] );
}
$post_data['post_mime_type'] = $post->post_mime_type;
$post_data['guid'] = $post->guid;
$post_data['ID'] = $post_ID;
$updated[] = wp_update_post( $post_data );
if ( isset( $post_data['sticky'] ) && current_user_can( $ptype->cap->edit_others_posts ) ) {
if ( 'sticky' == $post_data['sticky'] )
stick_post( $post_ID );
else
unstick_post( $post_ID );
}
if ( isset( $post_data['post_format'] ) )
set_post_format( $post_ID, $post_data['post_format'] );
}
return array( 'updated' => $updated, 'skipped' => $skipped, 'locked' => $locked );
}
/**
* Default post information to use when populating the "Write Post" form.
*
* @since 2.0.0
*
* @param string $post_type A post type string, defaults to 'post'.
* @return WP_Post Post object containing all the default post data as attributes
*/
function get_default_post_to_edit( $post_type = 'post', $create_in_db = false ) {
global $wpdb;
$post_title = '';
if ( !empty( $_REQUEST['post_title'] ) )
$post_title = esc_html( wp_unslash( $_REQUEST['post_title'] ));
$post_content = '';
if ( !empty( $_REQUEST['content'] ) )
$post_content = esc_html( wp_unslash( $_REQUEST['content'] ));
$post_excerpt = '';
if ( !empty( $_REQUEST['excerpt'] ) )
$post_excerpt = esc_html( wp_unslash( $_REQUEST['excerpt'] ));
if ( $create_in_db ) {
$post_id = wp_insert_post( array( 'post_title' => __( 'Auto Draft' ), 'post_type' => $post_type, 'post_status' => 'auto-draft' ) );
$post = get_post( $post_id );
if ( current_theme_supports( 'post-formats' ) && post_type_supports( $post->post_type, 'post-formats' ) && get_option( 'default_post_format' ) )
set_post_format( $post, get_option( 'default_post_format' ) );
} else {
$post = new stdClass;
$post->ID = 0;
$post->post_author = '';
$post->post_date = '';
$post->post_date_gmt = '';
$post->post_password = '';
$post->post_type = $post_type;
$post->post_status = 'draft';
$post->to_ping = '';
$post->pinged = '';
$post->comment_status = get_option( 'default_comment_status' );
$post->ping_status = get_option( 'default_ping_status' );
$post->post_pingback = get_option( 'default_pingback_flag' );
$post->post_category = get_option( 'default_category' );
$post->page_template = 'default';
$post->post_parent = 0;
$post->menu_order = 0;
$post = new WP_Post( $post );
}
$post->post_content = apply_filters( 'default_content', $post_content, $post );
$post->post_title = apply_filters( 'default_title', $post_title, $post );
$post->post_excerpt = apply_filters( 'default_excerpt', $post_excerpt, $post );
$post->post_name = '';
return $post;
}
/**
* Determine if a post exists based on title, content, and date
*
* @since 2.0.0
*
* @param string $title Post title
* @param string $content Optional post content
* @param string $date Optional post date
* @return int Post ID if post exists, 0 otherwise.
*/
function post_exists($title, $content = '', $date = '') {
global $wpdb;
$post_title = wp_unslash( sanitize_post_field( 'post_title', $title, 0, 'db' ) );
$post_content = wp_unslash( sanitize_post_field( 'post_content', $content, 0, 'db' ) );
$post_date = wp_unslash( sanitize_post_field( 'post_date', $date, 0, 'db' ) );
$query = "SELECT ID FROM $wpdb->posts WHERE 1=1";
$args = array();
if ( !empty ( $date ) ) {
$query .= ' AND post_date = %s';
$args[] = $post_date;
}
if ( !empty ( $title ) ) {
$query .= ' AND post_title = %s';
$args[] = $post_title;
}
if ( !empty ( $content ) ) {
$query .= 'AND post_content = %s';
$args[] = $post_content;
}
if ( !empty ( $args ) )
return (int) $wpdb->get_var( $wpdb->prepare($query, $args) );
return 0;
}
/**
* Creates a new post from the "Write Post" form using $_POST information.
*
* @since 2.1.0
*
* @return unknown
*/
function wp_write_post() {
if ( isset($_POST['post_type']) )
$ptype = get_post_type_object($_POST['post_type']);
else
$ptype = get_post_type_object('post');
if ( !current_user_can( $ptype->cap->edit_posts ) ) {
if ( 'page' == $ptype->name )
return new WP_Error( 'edit_pages', __( 'You are not allowed to create pages on this site.' ) );
else
return new WP_Error( 'edit_posts', __( 'You are not allowed to create posts or drafts on this site.' ) );
}
$_POST['post_mime_type'] = '';
// Clear out any data in internal vars.
unset( $_POST['filter'] );
// Edit don't write if we have a post id.
if ( isset( $_POST['post_ID'] ) )
return edit_post();
$translated = _wp_translate_postdata( false );
if ( is_wp_error($translated) )
return $translated;
if ( isset($_POST['visibility']) ) {
switch ( $_POST['visibility'] ) {
case 'public' :
$_POST['post_password'] = '';
break;
case 'password' :
unset( $_POST['sticky'] );
break;
case 'private' :
$_POST['post_status'] = 'private';
$_POST['post_password'] = '';
unset( $_POST['sticky'] );
break;
}
}
// Create the post.
$post_ID = wp_insert_post( $_POST );
if ( is_wp_error( $post_ID ) )
return $post_ID;
if ( empty($post_ID) )
return 0;
add_meta( $post_ID );
add_post_meta( $post_ID, '_edit_last', $GLOBALS['current_user']->ID );
// Now that we have an ID we can fix any attachment anchor hrefs
_fix_attachment_links( $post_ID );
wp_set_post_lock( $post_ID );
return $post_ID;
}
/**
* Calls wp_write_post() and handles the errors.
*
* @since 2.0.0
* @uses wp_write_post()
* @uses is_wp_error()
* @uses wp_die()
* @return unknown
*/
function write_post() {
$result = wp_write_post();
if ( is_wp_error( $result ) )
wp_die( $result->get_error_message() );
else
return $result;
}
//
// Post Meta
//
/**
* {@internal Missing Short Description}}
*
* @since 1.2.0
*
* @param unknown_type $post_ID
* @return unknown
*/
function add_meta( $post_ID ) {
global $wpdb;
$post_ID = (int) $post_ID;
$metakeyselect = isset($_POST['metakeyselect']) ? wp_unslash( trim( $_POST['metakeyselect'] ) ) : '';
$metakeyinput = isset($_POST['metakeyinput']) ? wp_unslash( trim( $_POST['metakeyinput'] ) ) : '';
$metavalue = isset($_POST['metavalue']) ? $_POST['metavalue'] : '';
if ( is_string( $metavalue ) )
$metavalue = trim( $metavalue );
if ( ('0' === $metavalue || ! empty ( $metavalue ) ) && ( ( ( '#NONE#' != $metakeyselect ) && !empty ( $metakeyselect) ) || !empty ( $metakeyinput ) ) ) {
// We have a key/value pair. If both the select and the
// input for the key have data, the input takes precedence:
if ( '#NONE#' != $metakeyselect )
$metakey = $metakeyselect;
if ( $metakeyinput )
$metakey = $metakeyinput; // default
if ( is_protected_meta( $metakey, 'post' ) || ! current_user_can( 'add_post_meta', $post_ID, $metakey ) )
return false;
$metakey = wp_slash( $metakey );
return add_post_meta( $post_ID, $metakey, $metavalue );
}
return false;
} // add_meta
/**
* {@internal Missing Short Description}}
*
* @since 1.2.0
*
* @param unknown_type $mid
* @return unknown
*/
function delete_meta( $mid ) {
return delete_metadata_by_mid( 'post' , $mid );
}
/**
* Get a list of previously defined keys.
*
* @since 1.2.0
*
* @return unknown
*/
function get_meta_keys() {
global $wpdb;
$keys = $wpdb->get_col( "
SELECT meta_key
FROM $wpdb->postmeta
GROUP BY meta_key
ORDER BY meta_key" );
return $keys;
}
/**
* {@internal Missing Short Description}}
*
* @since 2.1.0
*
* @param unknown_type $mid
* @return unknown
*/
function get_post_meta_by_id( $mid ) {
return get_metadata_by_mid( 'post', $mid );
}
/**
* {@internal Missing Short Description}}
*
* Some postmeta stuff.
*
* @since 1.2.0
*
* @param unknown_type $postid
* @return unknown
*/
function has_meta( $postid ) {
global $wpdb;
return $wpdb->get_results( $wpdb->prepare("SELECT meta_key, meta_value, meta_id, post_id
FROM $wpdb->postmeta WHERE post_id = %d
ORDER BY meta_key,meta_id", $postid), ARRAY_A );
}
/**
* {@internal Missing Short Description}}
*
* @since 1.2.0
*
* @param unknown_type $meta_id
* @param unknown_type $meta_key Expect Slashed
* @param unknown_type $meta_value Expect Slashed
* @return unknown
*/
function update_meta( $meta_id, $meta_key, $meta_value ) {
$meta_key = wp_unslash( $meta_key );
$meta_value = wp_unslash( $meta_value );
return update_metadata_by_mid( 'post', $meta_id, $meta_value, $meta_key );
}
//
// Private
//
/**
* Replace hrefs of attachment anchors with up-to-date permalinks.
*
* @since 2.3.0
* @access private
*
* @param int|object $post Post ID or post object.
* @return void|int|WP_Error Void if nothing fixed. 0 or WP_Error on update failure. The post ID on update success.
*/
function _fix_attachment_links( $post ) {
$post = get_post( $post, ARRAY_A );
$content = $post['post_content'];
// Don't run if no pretty permalinks or post is not published, scheduled, or privately published.
if ( ! get_option( 'permalink_structure' ) || ! in_array( $post['post_status'], array( 'publish', 'future', 'private' ) ) )
return;
// Short if there aren't any links or no '?attachment_id=' strings (strpos cannot be zero)
if ( !strpos($content, '?attachment_id=') || !preg_match_all( '/<a ([^>]+)>[\s\S]+?<\/a>/', $content, $link_matches ) )
return;
$site_url = get_bloginfo('url');
$site_url = substr( $site_url, (int) strpos($site_url, '://') ); // remove the http(s)
$replace = '';
foreach ( $link_matches[1] as $key => $value ) {
if ( !strpos($value, '?attachment_id=') || !strpos($value, 'wp-att-')
|| !preg_match( '/href=(["\'])[^"\']*\?attachment_id=(\d+)[^"\']*\\1/', $value, $url_match )
|| !preg_match( '/rel=["\'][^"\']*wp-att-(\d+)/', $value, $rel_match ) )
continue;
$quote = $url_match[1]; // the quote (single or double)
$url_id = (int) $url_match[2];
$rel_id = (int) $rel_match[1];
if ( !$url_id || !$rel_id || $url_id != $rel_id || strpos($url_match[0], $site_url) === false )
continue;
$link = $link_matches[0][$key];
$replace = str_replace( $url_match[0], 'href=' . $quote . get_attachment_link( $url_id ) . $quote, $link );
$content = str_replace( $link, $replace, $content );
}
if ( $replace ) {
$post['post_content'] = $content;
// Escape data pulled from DB.
$post = add_magic_quotes($post);
return wp_update_post($post);
}
}
/**
* Move child posts to a new parent.
*
* @since 2.3.0
* @access private
*
* @param unknown_type $old_ID
* @param unknown_type $new_ID
* @return unknown
*/
function _relocate_children( $old_ID, $new_ID ) {
global $wpdb;
$old_ID = (int) $old_ID;
$new_ID = (int) $new_ID;
$children = $wpdb->get_col( $wpdb->prepare("
SELECT post_id
FROM $wpdb->postmeta
WHERE meta_key = '_wp_attachment_temp_parent'
AND meta_value = %d", $old_ID) );
foreach ( $children as $child_id ) {
$wpdb->update($wpdb->posts, array('post_parent' => $new_ID), array('ID' => $child_id) );
delete_post_meta($child_id, '_wp_attachment_temp_parent');
}
}
/**
* Get all the possible statuses for a post_type
*
* @since 2.5.0
*
* @param string $type The post_type you want the statuses for
* @return array As array of all the statuses for the supplied post type
*/
function get_available_post_statuses($type = 'post') {
$stati = wp_count_posts($type);
return array_keys(get_object_vars($stati));
}
/**
* Run the wp query to fetch the posts for listing on the edit posts page
*
* @since 2.5.0
*
* @param array|bool $q Array of query variables to use to build the query or false to use $_GET superglobal.
* @return array
*/
function wp_edit_posts_query( $q = false ) {
if ( false === $q )
$q = $_GET;
$q['m'] = isset($q['m']) ? (int) $q['m'] : 0;
$q['cat'] = isset($q['cat']) ? (int) $q['cat'] : 0;
$post_stati = get_post_stati();
if ( isset($q['post_type']) && in_array( $q['post_type'], get_post_types() ) )
$post_type = $q['post_type'];
else
$post_type = 'post';
$avail_post_stati = get_available_post_statuses($post_type);
if ( isset($q['post_status']) && in_array( $q['post_status'], $post_stati ) ) {
$post_status = $q['post_status'];
$perm = 'readable';
}
if ( isset($q['orderby']) )
$orderby = $q['orderby'];
elseif ( isset($q['post_status']) && in_array($q['post_status'], array('pending', 'draft')) )
$orderby = 'modified';
if ( isset($q['order']) )
$order = $q['order'];
elseif ( isset($q['post_status']) && 'pending' == $q['post_status'] )
$order = 'ASC';
$per_page = 'edit_' . $post_type . '_per_page';
$posts_per_page = (int) get_user_option( $per_page );
if ( empty( $posts_per_page ) || $posts_per_page < 1 )
$posts_per_page = 20;
$posts_per_page = apply_filters( $per_page, $posts_per_page );
$posts_per_page = apply_filters( 'edit_posts_per_page', $posts_per_page, $post_type );
$query = compact('post_type', 'post_status', 'perm', 'order', 'orderby', 'posts_per_page');
// Hierarchical types require special args.
if ( is_post_type_hierarchical( $post_type ) && !isset($orderby) ) {
$query['orderby'] = 'menu_order title';
$query['order'] = 'asc';
$query['posts_per_page'] = -1;
$query['posts_per_archive_page'] = -1;
}
if ( ! empty( $q['show_sticky'] ) )
$query['post__in'] = (array) get_option( 'sticky_posts' );
wp( $query );
return $avail_post_stati;
}
/**
* {@internal Missing Short Description}}
*
* @since 2.5.0
*
* @param unknown_type $type
* @return unknown
*/
function get_available_post_mime_types($type = 'attachment') {
global $wpdb;
$types = $wpdb->get_col($wpdb->prepare("SELECT DISTINCT post_mime_type FROM $wpdb->posts WHERE post_type = %s", $type));
return $types;
}
/**
* Executes a query for attachments. An array of WP_Query arguments
* can be passed in, which will override the arguments set by this function.
*
* @since 2.5.0
* @uses apply_filters() Calls 'upload_per_page' on posts_per_page argument
*
* @param array|bool $q Array of query variables to use to build the query or false to use $_GET superglobal.
* @return array
*/
function wp_edit_attachments_query( $q = false ) {
if ( false === $q )
$q = $_GET;
$q['m'] = isset( $q['m'] ) ? (int) $q['m'] : 0;
$q['cat'] = isset( $q['cat'] ) ? (int) $q['cat'] : 0;
$q['post_type'] = 'attachment';
$post_type = get_post_type_object( 'attachment' );
$states = 'inherit';
if ( current_user_can( $post_type->cap->read_private_posts ) )
$states .= ',private';
$q['post_status'] = isset( $q['status'] ) && 'trash' == $q['status'] ? 'trash' : $states;
$media_per_page = (int) get_user_option( 'upload_per_page' );
if ( empty( $media_per_page ) || $media_per_page < 1 )
$media_per_page = 20;
$q['posts_per_page'] = apply_filters( 'upload_per_page', $media_per_page );
$post_mime_types = get_post_mime_types();
$avail_post_mime_types = get_available_post_mime_types('attachment');
if ( isset($q['post_mime_type']) && !array_intersect( (array) $q['post_mime_type'], array_keys($post_mime_types) ) )
unset($q['post_mime_type']);
if ( isset($q['detached']) )
add_filter('posts_where', '_edit_attachments_query_helper');
wp( $q );
if ( isset($q['detached']) )
remove_filter('posts_where', '_edit_attachments_query_helper');
return array($post_mime_types, $avail_post_mime_types);
}
function _edit_attachments_query_helper($where) {
global $wpdb;
return $where .= " AND {$wpdb->posts}.post_parent < 1";
}
/**
* Returns the list of classes to be used by a metabox
*
* @uses get_user_option()
* @since 2.5.0
*
* @param unknown_type $id
* @param unknown_type $page
* @return unknown
*/
function postbox_classes( $id, $page ) {
if ( isset( $_GET['edit'] ) && $_GET['edit'] == $id ) {
$classes = array( '' );
} elseif ( $closed = get_user_option('closedpostboxes_'.$page ) ) {
if ( !is_array( $closed ) ) {
$classes = array( '' );
} else {
$classes = in_array( $id, $closed ) ? array( 'closed' ) : array( '' );
}
} else {
$classes = array( '' );
}
$classes = apply_filters( "postbox_classes_{$page}_{$id}", $classes );
return implode( ' ', $classes );
}
/**
* {@internal Missing Short Description}}
*
* @since 2.5.0
*
* @param int|object $id Post ID or post object.
* @param string $title (optional) Title
* @param string $name (optional) Name
* @return array With two entries of type string
*/
function get_sample_permalink($id, $title = null, $name = null) {
$post = get_post( $id );
if ( ! $post )
return array( '', '' );
$ptype = get_post_type_object($post->post_type);
$original_status = $post->post_status;
$original_date = $post->post_date;
$original_name = $post->post_name;
// Hack: get_permalink() would return ugly permalink for drafts, so we will fake that our post is published.
if ( in_array( $post->post_status, array( 'draft', 'pending' ) ) ) {
$post->post_status = 'publish';
$post->post_name = sanitize_title($post->post_name ? $post->post_name : $post->post_title, $post->ID);
}
// If the user wants to set a new name -- override the current one
// Note: if empty name is supplied -- use the title instead, see #6072
if ( !is_null($name) )
$post->post_name = sanitize_title($name ? $name : $title, $post->ID);
$post->post_name = wp_unique_post_slug($post->post_name, $post->ID, $post->post_status, $post->post_type, $post->post_parent);
$post->filter = 'sample';
$permalink = get_permalink($post, true);
// Replace custom post_type Token with generic pagename token for ease of use.
$permalink = str_replace("%$post->post_type%", '%pagename%', $permalink);
// Handle page hierarchy
if ( $ptype->hierarchical ) {
$uri = get_page_uri($post);
$uri = untrailingslashit($uri);
$uri = strrev( stristr( strrev( $uri ), '/' ) );
$uri = untrailingslashit($uri);
$uri = apply_filters( 'editable_slug', $uri );
if ( !empty($uri) )
$uri .= '/';
$permalink = str_replace('%pagename%', "{$uri}%pagename%", $permalink);
}
$permalink = array($permalink, apply_filters('editable_slug', $post->post_name));
$post->post_status = $original_status;
$post->post_date = $original_date;
$post->post_name = $original_name;
unset($post->filter);
return $permalink;
}
/**
* Returns the HTML of the sample permalink slug editor.
*
* @since 2.5.0
*
* @param int|object $id Post ID or post object.
* @param string $new_title Optional. New title.
* @param string $new_slug Optional. New slug.
* @return string The HTML of the sample permalink slug editor.
*/
function get_sample_permalink_html( $id, $new_title = null, $new_slug = null ) {
$post = get_post( $id );
if ( ! $post )
return '';
list($permalink, $post_name) = get_sample_permalink($post->ID, $new_title, $new_slug);
if ( 'publish' == get_post_status( $post ) ) {
$ptype = get_post_type_object($post->post_type);
$view_post = $ptype->labels->view_item;
$title = __('Click to edit this part of the permalink');
} else {
$title = __('Temporary permalink. Click to edit this part.');
}
if ( false === strpos($permalink, '%postname%') && false === strpos($permalink, '%pagename%') ) {
$return = '<strong>' . __('Permalink:') . "</strong>\n" . '<span id="sample-permalink" tabindex="-1">' . $permalink . "</span>\n";
if ( '' == get_option( 'permalink_structure' ) && current_user_can( 'manage_options' ) && !( 'page' == get_option('show_on_front') && $id == get_option('page_on_front') ) )
$return .= '<span id="change-permalinks"><a href="options-permalink.php" class="button button-small" target="_blank">' . __('Change Permalinks') . "</a></span>\n";
if ( isset( $view_post ) )
$return .= "<span id='view-post-btn'><a href='$permalink' class='button button-small'>$view_post</a></span>\n";
$return = apply_filters('get_sample_permalink_html', $return, $id, $new_title, $new_slug);
return $return;
}
if ( function_exists('mb_strlen') ) {
if ( mb_strlen($post_name) > 30 ) {
$post_name_abridged = mb_substr($post_name, 0, 14). '…' . mb_substr($post_name, -14);
} else {
$post_name_abridged = $post_name;
}
} else {
if ( strlen($post_name) > 30 ) {
$post_name_abridged = substr($post_name, 0, 14). '…' . substr($post_name, -14);
} else {
$post_name_abridged = $post_name;
}
}
$post_name_html = '<span id="editable-post-name" title="' . $title . '">' . $post_name_abridged . '</span>';
$display_link = str_replace(array('%pagename%','%postname%'), $post_name_html, $permalink);
$view_link = str_replace(array('%pagename%','%postname%'), $post_name, $permalink);
$return = '<strong>' . __('Permalink:') . "</strong>\n";
$return .= '<span id="sample-permalink" tabindex="-1">' . $display_link . "</span>\n";
$return .= '‎'; // Fix bi-directional text display defect in RTL languages.
$return .= '<span id="edit-slug-buttons"><a href="#post_name" class="edit-slug button button-small hide-if-no-js" onclick="editPermalink(' . $id . '); return false;">' . __('Edit') . "</a></span>\n";
$return .= '<span id="editable-post-name-full">' . $post_name . "</span>\n";
if ( isset($view_post) )
$return .= "<span id='view-post-btn'><a href='$view_link' class='button button-small'>$view_post</a></span>\n";
$return = apply_filters('get_sample_permalink_html', $return, $id, $new_title, $new_slug);
return $return;
}
/**
* Output HTML for the post thumbnail meta-box.
*
* @since 2.9.0
*
* @param int $thumbnail_id ID of the attachment used for thumbnail
* @param mixed $post The post ID or object associated with the thumbnail, defaults to global $post.
* @return string html
*/
function _wp_post_thumbnail_html( $thumbnail_id = null, $post = null ) {
global $content_width, $_wp_additional_image_sizes;
$post = get_post( $post );
$upload_iframe_src = esc_url( get_upload_iframe_src('image', $post->ID ) );
$set_thumbnail_link = '<p class="hide-if-no-js"><a title="' . esc_attr__( 'Set featured image' ) . '" href="%s" id="set-post-thumbnail" class="thickbox">%s</a></p>';
$content = sprintf( $set_thumbnail_link, $upload_iframe_src, esc_html__( 'Set featured image' ) );
if ( $thumbnail_id && get_post( $thumbnail_id ) ) {
$old_content_width = $content_width;
$content_width = 266;
if ( !isset( $_wp_additional_image_sizes['post-thumbnail'] ) )
$thumbnail_html = wp_get_attachment_image( $thumbnail_id, array( $content_width, $content_width ) );
else
$thumbnail_html = wp_get_attachment_image( $thumbnail_id, 'post-thumbnail' );
if ( !empty( $thumbnail_html ) ) {
$ajax_nonce = wp_create_nonce( 'set_post_thumbnail-' . $post->ID );
$content = sprintf( $set_thumbnail_link, $upload_iframe_src, $thumbnail_html );
$content .= '<p class="hide-if-no-js"><a href="#" id="remove-post-thumbnail" onclick="WPRemoveThumbnail(\'' . $ajax_nonce . '\');return false;">' . esc_html__( 'Remove featured image' ) . '</a></p>';
}
$content_width = $old_content_width;
}
return apply_filters( 'admin_post_thumbnail_html', $content, $post->ID );
}
/**
* Check to see if the post is currently being edited by another user.
*
* @since 2.5.0
*
* @param int $post_id ID of the post to check for editing
* @return bool|int False: not locked or locked by current user. Int: user ID of user with lock.
*/
function wp_check_post_lock( $post_id ) {
if ( !$post = get_post( $post_id ) )
return false;
if ( !$lock = get_post_meta( $post->ID, '_edit_lock', true ) )
return false;
$lock = explode( ':', $lock );
$time = $lock[0];
$user = isset( $lock[1] ) ? $lock[1] : get_post_meta( $post->ID, '_edit_last', true );
$time_window = apply_filters( 'wp_check_post_lock_window', 120 );
if ( $time && $time > time() - $time_window && $user != get_current_user_id() )
return $user;
return false;
}
/**
* Mark the post as currently being edited by the current user
*
* @since 2.5.0
*
* @param int $post_id ID of the post to being edited
* @return bool|array Returns false if the post doesn't exist of there is no current user, or
* an array of the lock time and the user ID.
*/
function wp_set_post_lock( $post_id ) {
if ( !$post = get_post( $post_id ) )
return false;
if ( 0 == ($user_id = get_current_user_id()) )
return false;
$now = time();
$lock = "$now:$user_id";
update_post_meta( $post->ID, '_edit_lock', $lock );
return array( $now, $user_id );
}
/**
* Outputs the HTML for the notice to say that someone else is editing or has taken over editing of this post.
*
* @since 2.8.5
* @return none
*/
function _admin_notice_post_locked() {
if ( ! $post = get_post() )
return;
$user = null;
if ( $user_id = wp_check_post_lock( $post->ID ) )
$user = get_userdata( $user_id );
if ( $user ) {
if ( ! apply_filters( 'show_post_locked_dialog', true, $post, $user ) )
return;
$locked = true;
} else {
$locked = false;
}
if ( $locked && ( $sendback = wp_get_referer() ) &&
false === strpos( $sendback, 'post.php' ) && false === strpos( $sendback, 'post-new.php' ) ) {
$sendback_text = __('Go back');
} else {
$sendback = admin_url( 'edit.php' );
if ( 'post' != $post->post_type )
$sendback = add_query_arg( 'post_type', $post->post_type, $sendback );
$sendback_text = get_post_type_object( $post->post_type )->labels->all_items;
}
$hidden = $locked ? '' : ' hidden';
?>
<div id="post-lock-dialog" class="notification-dialog-wrap<?php echo $hidden; ?>">
<div class="notification-dialog-background"></div>
<div class="notification-dialog">
<?php
if ( $locked ) {
if ( get_post_type_object( $post->post_type )->public ) {
$preview_link = set_url_scheme( add_query_arg( 'preview', 'true', get_permalink( $post->ID ) ) );
if ( 'publish' == $post->post_status || $user->ID != $post->post_author ) {
// Latest content is in autosave
$nonce = wp_create_nonce( 'post_preview_' . $post->ID );
$preview_link = add_query_arg( array( 'preview_id' => $post->ID, 'preview_nonce' => $nonce ), $preview_link );
}
} else {
$preview_link = '';
}
$preview_link = apply_filters( 'preview_post_link', $preview_link );
$override = apply_filters( 'override_post_lock', true, $post, $user );
$tab_last = $override ? '' : ' wp-tab-last';
?>
<div class="post-locked-message">
<div class="post-locked-avatar"><?php echo get_avatar( $user->ID, 64 ); ?></div>
<p class="currently-editing wp-tab-first" tabindex="0">
<?php
_e( 'This content is currently locked.' );
if ( $override )
printf( ' ' . __( 'If you take over, %s will be blocked from continuing to edit.' ), esc_html( $user->display_name ) );
?>
</p>
<?php do_action( 'post_locked_dialog', $post ); ?>
<p>
<a class="button" href="<?php echo esc_url( $sendback ); ?>"><?php echo $sendback_text; ?></a>
<?php if ( $preview_link ) { ?>
<a class="button<?php echo $tab_last; ?>" href="<?php echo esc_url( $preview_link ); ?>"><?php _e('Preview'); ?></a>
<?php
}
// Allow plugins to prevent some users overriding the post lock
if ( $override ) {
?>
<a class="button button-primary wp-tab-last" href="<?php echo esc_url( add_query_arg( 'get-post-lock', '1', get_edit_post_link( $post->ID, 'url' ) ) ); ?>"><?php _e('Take over'); ?></a>
<?php
}
?>
</p>
</div>
<?php
} else {
?>
<div class="post-taken-over">
<div class="post-locked-avatar"></div>
<p class="wp-tab-first" tabindex="0">
<span class="currently-editing"></span><br>
<span class="locked-saving hidden"><img src="images/wpspin_light-2x.gif" width="16" height="16" /> <?php _e('Saving revision...'); ?></span>
<span class="locked-saved hidden"><?php _e('Your latest changes were saved as a revision.'); ?></span>
</p>
<?php do_action( 'post_lock_lost_dialog', $post ); ?>
<p><a class="button button-primary wp-tab-last" href="<?php echo esc_url( $sendback ); ?>"><?php echo $sendback_text; ?></a></p>
</div>
<?php
}
?>
</div>
</div>
<?php
}
/**
* Creates autosave data for the specified post from $_POST data.
*
* @package WordPress
* @subpackage Post_Revisions
* @since 2.6.0
*
* @uses _wp_translate_postdata()
* @uses _wp_post_revision_fields()
*
* @return unknown
*/
function wp_create_post_autosave( $post_id ) {
$translated = _wp_translate_postdata( true );
if ( is_wp_error( $translated ) )
return $translated;
$post_author = get_current_user_id();
// Store one autosave per author. If there is already an autosave, overwrite it.
if ( $old_autosave = wp_get_post_autosave( $post_id, $post_author ) ) {
$new_autosave = _wp_post_revision_fields( $_POST, true );
$new_autosave['ID'] = $old_autosave->ID;
$new_autosave['post_author'] = $post_author;
// If the new autosave is the same content as the post, delete the old autosave.
$post = get_post( $post_id );
$autosave_is_different = false;
foreach ( array_keys( _wp_post_revision_fields() ) as $field ) {
if ( normalize_whitespace( $new_autosave[ $field ] ) != normalize_whitespace( $post->$field ) ) {
$autosave_is_different = true;
break;
}
}
if ( ! $autosave_is_different ) {
wp_delete_post_revision( $old_autosave->ID );
return;
}
return wp_update_post( $new_autosave );
}
// _wp_put_post_revision() expects unescaped.
$post_data = wp_unslash( $_POST );
// Otherwise create the new autosave as a special post revision
return _wp_put_post_revision( $post_data, true );
}
/**
* Save draft or manually autosave for showing preview.
*
* @package WordPress
* @since 2.7.0
*
* @uses get_post_status()
* @uses edit_post()
* @uses get_post()
* @uses current_user_can()
* @uses wp_die()
* @uses wp_create_post_autosave()
* @uses add_query_arg()
* @uses wp_create_nonce()
*
* @return str URL to redirect to show the preview
*/
function post_preview() {
$post_ID = (int) $_POST['post_ID'];
$status = get_post_status( $post_ID );
if ( 'auto-draft' == $status )
wp_die( __('Preview not available. Please save as a draft first.') );
if ( isset($_POST['catslist']) )
$_POST['post_category'] = explode(",", $_POST['catslist']);
if ( isset($_POST['tags_input']) )
$_POST['tags_input'] = explode(",", $_POST['tags_input']);
if ( $_POST['post_type'] == 'page' || empty($_POST['post_category']) )
unset($_POST['post_category']);
$_POST['ID'] = $post_ID;
$post = get_post($post_ID);
if ( 'page' == $post->post_type ) {
if ( ! current_user_can('edit_page', $post_ID) )
wp_die( __('You are not allowed to edit this page.') );
} else {
if ( ! current_user_can('edit_post', $post_ID) )
wp_die( __('You are not allowed to edit this post.') );
}
$user_id = get_current_user_id();
$locked = wp_check_post_lock( $post->ID );
if ( ! $locked && 'draft' == $post->post_status && $user_id == $post->post_author ) {
$id = edit_post();
} else { // Non drafts are not overwritten. The autosave is stored in a special post revision.
$id = wp_create_post_autosave( $post->ID );
if ( ! is_wp_error($id) )
$id = $post->ID;
}
if ( is_wp_error($id) )
wp_die( $id->get_error_message() );
if ( ! $locked && $_POST['post_status'] == 'draft' && $user_id == $post->post_author ) {
$url = add_query_arg( 'preview', 'true', get_permalink($id) );
} else {
$nonce = wp_create_nonce('post_preview_' . $id);
$args = array(
'preview' => 'true',
'preview_id' => $id,
'preview_nonce' => $nonce,
);
if ( isset( $_POST['post_format'] ) )
$args['post_format'] = empty( $_POST['post_format'] ) ? 'standard' : sanitize_key( $_POST['post_format'] );
$url = add_query_arg( $args, get_permalink($id) );
}
return apply_filters( 'preview_post_link', $url );
}
