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post.php
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1892 lines (1601 loc) · 59.1 KB
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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', __( 'Sorry, you are not allowed to edit pages as this user.' ) );
else
return new WP_Error( 'edit_others_posts', __( 'Sorry, 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', __( 'Sorry, you are not allowed to create pages as this user.' ) );
else
return new WP_Error( 'edit_others_posts', __( 'Sorry, 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', __( 'Sorry, you are not allowed to edit pages as this user.' ) );
else
return new WP_Error( 'edit_others_posts', __( 'Sorry, you are not allowed to edit posts as this user.' ) );
} else {
if ( 'page' == $post_data['post_type'] )
return new WP_Error( 'edit_others_pages', __( 'Sorry, you are not allowed to create pages as this user.' ) );
else
return new WP_Error( 'edit_others_posts', __( 'Sorry, 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'] );
// No longer an auto-draft
if ( 'auto-draft' === $post_data['post_status'] ) {
$post_data['post_status'] = 'draft';
}
if ( ! get_post_status_object( $post_data['post_status'] ) ) {
unset( $post_data['post_status'] );
}
}
// What to do based on which button they pressed
if ( isset($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;
if ( isset( $post_data['post_status'] ) && 'private' == $post_data['post_status'] && ! current_user_can( $ptype->cap->publish_posts ) ) {
$post_data['post_status'] = $previous_status ? $previous_status : 'pending';
}
$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'] = 'auto-draft' === $previous_status ? 'draft' : $previous_status;
}
if ( isset( $post_data['post_password'] ) && ! current_user_can( $ptype->cap->publish_posts ) ) {
unset( $post_data['post_password'] );
}
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', __( 'Invalid date.' ) );
}
$post_data['post_date_gmt'] = get_gmt_from_date( $post_data['post_date'] );
}
if ( isset( $post_data['post_category'] ) ) {
$category_object = get_taxonomy( 'category' );
if ( ! current_user_can( $category_object->cap->assign_terms ) ) {
unset( $post_data['post_category'] );
}
}
return $post_data;
}
/**
* Returns only allowed post data fields
*
* @since 4.9.9
*
* @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_get_allowed_postdata( $post_data = null ) {
if ( empty( $post_data ) ) {
$post_data = $_POST;
}
// Pass through errors
if ( is_wp_error( $post_data ) ) {
return $post_data;
}
return array_diff_key( $post_data, array_flip( array( 'meta_input', 'file', 'guid' ) ) );
}
/**
* Update an existing post with values provided in $_POST.
*
* @since 1.5.0
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param array $post_data Optional.
* @return int Post ID.
*/
function edit_post( $post_data = null ) {
global $wpdb;
if ( empty($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;
if ( ! empty( $post_data['post_status'] ) ) {
$post_data['post_status'] = sanitize_key( $post_data['post_status'] );
if ( 'inherit' == $post_data['post_status'] ) {
unset( $post_data['post_status'] );
}
}
$ptype = get_post_type_object($post_data['post_type']);
if ( !current_user_can( 'edit_post', $post_ID ) ) {
if ( 'page' == $post_data['post_type'] )
wp_die( __('Sorry, you are not allowed to edit this page.' ));
else
wp_die( __('Sorry, 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( $post_ID ) );
}
if ( isset($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_data = _wp_translate_postdata( true, $post_data );
if ( is_wp_error($post_data) )
wp_die( $post_data->get_error_message() );
$translated = _wp_get_allowed_postdata( $post_data );
// 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 ] ) );
}
}
if ( 'attachment' === $post_data['post_type'] && preg_match( '#^(audio|video)/#', $post_data['post_mime_type'] ) ) {
$id3data = wp_get_attachment_metadata( $post_ID );
if ( ! is_array( $id3data ) ) {
$id3data = array();
}
foreach ( wp_get_attachment_id3_keys( $post, 'edit' ) as $key => $label ) {
if ( isset( $post_data[ 'id3_' . $key ] ) ) {
$id3data[ $key ] = sanitize_text_field( wp_unslash( $post_data[ 'id3_' . $key ] ) );
}
}
wp_update_attachment_metadata( $post_ID, $id3data );
}
// Meta Stuff
if ( isset($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( $meta->meta_key, 'post' ) || ! current_user_can( 'edit_post_meta', $post_ID, $meta->meta_key ) )
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 */
$translated = apply_filters( 'attachment_fields_to_save', $translated, $attachment_data );
}
// Convert taxonomy input to term IDs, to avoid ambiguity.
if ( isset( $post_data['tax_input'] ) ) {
foreach ( (array) $post_data['tax_input'] as $taxonomy => $terms ) {
// Hierarchical taxonomy data is already sent as term IDs, so no conversion is necessary.
if ( is_taxonomy_hierarchical( $taxonomy ) ) {
continue;
}
/*
* Assume that a 'tax_input' string is a comma-separated list of term names.
* Some languages may use a character other than a comma as a delimiter, so we standardize on
* commas before parsing the list.
*/
if ( ! is_array( $terms ) ) {
$comma = _x( ',', 'tag delimiter' );
if ( ',' !== $comma ) {
$terms = str_replace( $comma, ',', $terms );
}
$terms = explode( ',', trim( $terms, " \n\t\r\0\x0B," ) );
}
$clean_terms = array();
foreach ( $terms as $term ) {
// Empty terms are invalid input.
if ( empty( $term ) ) {
continue;
}
$_term = get_terms( $taxonomy, array(
'name' => $term,
'fields' => 'ids',
'hide_empty' => false,
) );
if ( ! empty( $_term ) ) {
$clean_terms[] = intval( $_term[0] );
} else {
// No existing term was found, so pass the string. A new term will be created.
$clean_terms[] = $term;
}
}
$translated['tax_input'][ $taxonomy ] = $clean_terms;
}
}
add_meta( $post_ID );
update_post_meta( $post_ID, '_edit_last', get_current_user_id() );
$success = wp_update_post( $translated );
// If the save failed, see if we can sanity check the main fields and try again
if ( ! $success && is_callable( array( $wpdb, 'strip_invalid_text_for_column' ) ) ) {
$fields = array( 'post_title', 'post_content', 'post_excerpt' );
foreach ( $fields as $field ) {
if ( isset( $translated[ $field ] ) ) {
$translated[ $field ] = $wpdb->strip_invalid_text_for_column( $wpdb->posts, $field, $translated[ $field ] );
}
}
wp_update_post( $translated );
}
// 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 ) && current_user_can( $ptype->cap->publish_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
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @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( __('Sorry, you are not allowed to edit pages.'));
else
wp_die( __('Sorry, 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']);
if ( ! empty( $post_data['post_status'] ) ) {
$post_data['post_status'] = sanitize_key( $post_data['post_status'] );
if ( 'inherit' == $post_data['post_status'] ) {
unset( $post_data['post_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();
$shared_post_data = $post_data;
foreach ( $post_IDs as $post_ID ) {
// Start with fresh post data with each iteration.
$post_data = $shared_post_data;
$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_ID'] = $post_ID;
$post_data['post_type'] = $post->post_type;
$post_data['post_mime_type'] = $post->post_mime_type;
foreach ( array( 'comment_status', 'ping_status', 'post_author' ) as $field ) {
if ( ! isset( $post_data[ $field ] ) ) {
$post_data[ $field ] = $post->$field;
}
}
$post_data = _wp_translate_postdata( true, $post_data );
if ( is_wp_error( $post_data ) ) {
$skipped[] = $post_ID;
continue;
}
$post_data = _wp_get_allowed_postdata( $post_data );
$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( $shared_post_data['post_format'] ) )
set_post_format( $post_ID, $shared_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 Optional. A post type string. Default 'post'.
* @param bool $create_in_db Optional. Whether to insert the post into database. Default false.
* @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 ) {
$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_name = '';
$post->post_type = $post_type;
$post->post_status = 'draft';
$post->to_ping = '';
$post->pinged = '';
$post->comment_status = get_default_comment_status( $post_type );
$post->ping_status = get_default_comment_status( $post_type, 'pingback' );
$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 );
}
/**
* Filters the default post content initially used in the "Write Post" form.
*
* @since 1.5.0
*
* @param string $post_content Default post content.
* @param WP_Post $post Post object.
*/
$post->post_content = apply_filters( 'default_content', $post_content, $post );
/**
* Filters the default post title initially used in the "Write Post" form.
*
* @since 1.5.0
*
* @param string $post_title Default post title.
* @param WP_Post $post Post object.
*/
$post->post_title = apply_filters( 'default_title', $post_title, $post );
/**
* Filters the default post excerpt initially used in the "Write Post" form.
*
* @since 1.5.0
*
* @param string $post_excerpt Default post excerpt.
* @param WP_Post $post Post object.
*/
$post->post_excerpt = apply_filters( 'default_excerpt', $post_excerpt, $post );
return $post;
}
/**
* Determine if a post exists based on title, content, and date
*
* @since 2.0.0
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @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
*
* @global WP_User $current_user
*
* @return int|WP_Error
*/
function wp_write_post() {
if ( isset($_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', __( 'Sorry, you are not allowed to create pages on this site.' ) );
else
return new WP_Error( 'edit_posts', __( 'Sorry, 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( $_POST['post_ID'] ) )
return edit_post();
if ( isset($_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;
}
}
$translated = _wp_translate_postdata( false );
if ( is_wp_error($translated) )
return $translated;
$translated = _wp_get_allowed_postdata( $translated );
// Create the post.
$post_ID = wp_insert_post( $translated );
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
*
* @return int|null
*/
function write_post() {
$result = wp_write_post();
if ( is_wp_error( $result ) )
wp_die( $result->get_error_message() );
else
return $result;
}
//
// Post Meta
//
/**
* Add post meta data defined in $_POST superglobal for post with given ID.
*
* @since 1.2.0
*
* @param int $post_ID
* @return int|bool
*/
function add_meta( $post_ID ) {
$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
/**
* Delete post meta data by meta ID.
*
* @since 1.2.0
*
* @param int $mid
* @return bool
*/
function delete_meta( $mid ) {
return delete_metadata_by_mid( 'post' , $mid );
}
/**
* Get a list of previously defined keys.
*
* @since 1.2.0
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @return mixed
*/
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;
}
/**
* Get post meta data by meta ID.
*
* @since 2.1.0
*
* @param int $mid
* @return object|bool
*/
function get_post_meta_by_id( $mid ) {
return get_metadata_by_mid( 'post', $mid );
}
/**
* Get meta data for the given post ID.
*
* @since 1.2.0
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param int $postid
* @return mixed
*/
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 );
}
/**
* Update post meta data by meta ID.
*
* @since 1.2.0
*
* @param int $meta_id
* @param string $meta_key Expect Slashed
* @param string $meta_value Expect Slashed
* @return bool
*/
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);
}
}
/**
* Get all the possible statuses for a post_type
*
* @since 2.5.0
*