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Oldphaloskepsis/plugins/jetpack/json-endpoints/class.wpcom-json-api-list-posts-v1-1-endpoint.php

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2017-01-12 23:10:07 +00:00
<?php
class WPCOM_JSON_API_List_Posts_v1_1_Endpoint extends WPCOM_JSON_API_Post_v1_1_Endpoint {
public $date_range = array();
public $modified_range = array();
public $page_handle = array();
public $performed_query = null;
public $response_format = array(
'found' => '(int) The total number of posts found that match the request (ignoring limits, offsets, and pagination).',
'posts' => '(array:post) An array of post objects.',
'meta' => '(object) Meta data',
);
// /sites/%s/posts/ -> $blog_id
function callback( $path = '', $blog_id = 0 ) {
$blog_id = $this->api->switch_to_blog_and_validate_user( $this->api->get_blog_id( $blog_id ) );
if ( is_wp_error( $blog_id ) ) {
return $blog_id;
}
$args = $this->query_args();
$is_eligible_for_page_handle = true;
if ( $args['number'] < 1 ) {
$args['number'] = 20;
} elseif ( 100 < $args['number'] ) {
return new WP_Error( 'invalid_number', 'The NUMBER parameter must be less than or equal to 100.', 400 );
}
if ( isset( $args['type'] ) && ! $this->is_post_type_allowed( $args['type'] ) ) {
return new WP_Error( 'unknown_post_type', 'Unknown post type', 404 );
}
// Normalize post_type
if ( isset( $args['type'] ) && 'any' == $args['type'] ) {
if ( version_compare( $this->api->version, '1.1', '<' ) ) {
$args['type'] = array( 'post', 'page' );
} else { // 1.1+
$args['type'] = $this->_get_whitelisted_post_types();
}
}
// determine statuses
$status = ( ! empty( $args['status'] ) ) ? explode( ',', $args['status'] ) : array( 'publish' );
if ( is_user_logged_in() ) {
$statuses_whitelist = array(
'publish',
'pending',
'draft',
'future',
'private',
'trash',
'any',
);
$status = array_intersect( $status, $statuses_whitelist );
} else {
// logged-out users can see only published posts
$statuses_whitelist = array( 'publish', 'any' );
$status = array_intersect( $status, $statuses_whitelist );
if ( empty( $status ) ) {
// requested only protected statuses? nothing for you here
return array( 'found' => 0, 'posts' => array() );
}
// clear it (AKA published only) because "any" includes protected
$status = array();
}
if ( isset( $args['type'] ) &&
! in_array( $args['type'], array( 'post', 'page', 'revision', 'any' ) ) &&
defined( 'IS_WPCOM' ) && IS_WPCOM ) {
$this->load_theme_functions();
}
// let's be explicit about defaulting to 'post'
$args['type'] = isset( $args['type'] ) ? $args['type'] : 'post';
// make sure the user can read or edit the requested post type(s)
if ( is_array( $args['type'] ) ) {
$allowed_types = array();
foreach ( $args['type'] as $post_type ) {
if ( $this->current_user_can_access_post_type( $post_type, $args['context'] ) ) {
$allowed_types[] = $post_type;
}
}
if ( empty( $allowed_types ) ) {
return array( 'found' => 0, 'posts' => array() );
}
$args['type'] = $allowed_types;
}
else {
if ( ! $this->current_user_can_access_post_type( $args['type'], $args['context'] ) ) {
return array( 'found' => 0, 'posts' => array() );
}
}
$query = array(
'posts_per_page' => $args['number'],
'order' => $args['order'],
'orderby' => $args['order_by'],
'post_type' => $args['type'],
'post_status' => $status,
'post_parent' => isset( $args['parent_id'] ) ? $args['parent_id'] : null,
'author' => isset( $args['author'] ) && 0 < $args['author'] ? $args['author'] : null,
's' => isset( $args['search'] ) ? $args['search'] : null,
'fields' => 'ids',
);
if ( ! is_user_logged_in () ) {
$query['has_password'] = false;
}
if ( isset( $args['meta_key'] ) ) {
$show = false;
if ( $this->is_metadata_public( $args['meta_key'] ) )
$show = true;
if ( current_user_can( 'edit_post_meta', $query['post_type'], $args['meta_key'] ) )
$show = true;
if ( is_protected_meta( $args['meta_key'], 'post' ) && ! $show )
return new WP_Error( 'invalid_meta_key', 'Invalid meta key', 404 );
$meta = array( 'key' => $args['meta_key'] );
if ( isset( $args['meta_value'] ) )
$meta['value'] = $args['meta_value'];
$query['meta_query'] = array( $meta );
}
if ( $args['sticky'] === 'include' ) {
$query['ignore_sticky_posts'] = 1;
} else if ( $args['sticky'] === 'exclude' ) {
$sticky = get_option( 'sticky_posts' );
if ( is_array( $sticky ) ) {
$query['post__not_in'] = $sticky;
}
} else if ( $args['sticky'] === 'require' ) {
$sticky = get_option( 'sticky_posts' );
if ( is_array( $sticky ) && ! empty( $sticky ) ) {
$query['post__in'] = $sticky;
} else {
// no sticky posts exist
return array( 'found' => 0, 'posts' => array() );
}
}
if ( isset( $args['exclude'] ) ) {
$excluded_ids = (array) $args['exclude'];
$query['post__not_in'] = isset( $query['post__not_in'] ) ? array_merge( $query['post__not_in'], $excluded_ids ) : $excluded_ids;
}
if ( isset( $args['exclude_tree'] ) && is_post_type_hierarchical( $args['type'] ) ) {
// get_page_children is a misnomer; it supports all hierarchical post types
$page_args = array(
'child_of' => $args['exclude_tree'],
'post_type' => $args['type'],
// since we're looking for things to exclude, be aggressive
'post_status' => 'publish,draft,pending,private,future,trash',
);
$post_descendants = get_pages( $page_args );
$exclude_tree = array( $args['exclude_tree'] );
foreach ( $post_descendants as $child ) {
$exclude_tree[] = $child->ID;
}
$query['post__not_in'] = isset( $query['post__not_in'] ) ? array_merge( $query['post__not_in'], $exclude_tree ) : $exclude_tree;
}
if ( isset( $args['category'] ) ) {
$category = get_term_by( 'slug', $args['category'], 'category' );
if ( $category === false) {
$query['category_name'] = $args['category'];
} else {
$query['cat'] = $category->term_id;
}
}
if ( isset( $args['tag'] ) ) {
$query['tag'] = $args['tag'];
}
if ( isset( $args['page'] ) ) {
if ( $args['page'] < 1 ) {
$args['page'] = 1;
}
$query['paged'] = $args['page'];
if ( $query['paged'] !== 1 ) {
$is_eligible_for_page_handle = false;
}
} else {
if ( $args['offset'] < 0 ) {
$args['offset'] = 0;
}
$query['offset'] = $args['offset'];
if ( $query['offset'] !== 0 ) {
$is_eligible_for_page_handle = false;
}
}
if ( isset( $args['before'] ) ) {
$this->date_range['before'] = $args['before'];
}
if ( isset( $args['after'] ) ) {
$this->date_range['after'] = $args['after'];
}
if ( isset( $args['modified_before_gmt'] ) ) {
$this->modified_range['before'] = $args['modified_before_gmt'];
}
if ( isset( $args['modified_after_gmt'] ) ) {
$this->modified_range['after'] = $args['modified_after_gmt'];
}
if ( $this->date_range ) {
add_filter( 'posts_where', array( $this, 'handle_date_range' ) );
}
if ( $this->modified_range ) {
add_filter( 'posts_where', array( $this, 'handle_modified_range' ) );
}
if ( isset( $args['page_handle'] ) ) {
$page_handle = wp_parse_args( $args['page_handle'] );
if ( isset( $page_handle['value'] ) && isset( $page_handle['id'] ) ) {
// we have a valid looking page handle
$this->page_handle = $page_handle;
add_filter( 'posts_where', array( $this, 'handle_where_for_page_handle' ) );
}
}
/**
* 'column' necessary for the me/posts endpoint (which extends sites/$site/posts).
* Would need to be added to the sites/$site/posts definition if we ever want to
* use it there.
*/
$column_whitelist = array( 'post_modified_gmt' );
if ( isset( $args['column'] ) && in_array( $args['column'], $column_whitelist ) ) {
$query['column'] = $args['column'];
}
$this->performed_query = $query;
add_filter( 'posts_orderby', array( $this, 'handle_orderby_for_page_handle' ) );
$wp_query = new WP_Query( $query );
remove_filter( 'posts_orderby', array( $this, 'handle_orderby_for_page_handle' ) );
if ( $this->date_range ) {
remove_filter( 'posts_where', array( $this, 'handle_date_range' ) );
$this->date_range = array();
}
if ( $this->modified_range ) {
remove_filter( 'posts_where', array( $this, 'handle_modified_range' ) );
$this->modified_range = array();
}
if ( $this->page_handle ) {
remove_filter( 'posts_where', array( $this, 'handle_where_for_page_handle' ) );
}
$return = array();
$excluded_count = 0;
foreach ( array_keys( $this->response_format ) as $key ) {
switch ( $key ) {
case 'found' :
$return[$key] = (int) $wp_query->found_posts;
break;
case 'posts' :
$posts = array();
foreach ( $wp_query->posts as $post_ID ) {
$the_post = $this->get_post_by( 'ID', $post_ID, $args['context'] );
if ( $the_post && ! is_wp_error( $the_post ) ) {
$posts[] = $the_post;
} else {
$excluded_count++;
}
}
if ( $posts ) {
/** This action is documented in json-endpoints/class.wpcom-json-api-site-settings-endpoint.php */
do_action( 'wpcom_json_api_objects', 'posts', count( $posts ) );
}
$return[$key] = $posts;
break;
case 'meta' :
if ( ! is_array( $args['type'] ) ) {
$return[$key] = (object) array(
'links' => (object) array(
'counts' => (string) $this->get_site_link( $blog_id, 'post-counts/' . $args['type'] ),
)
);
}
if ( $is_eligible_for_page_handle && $return['posts'] ) {
$last_post = end( $return['posts'] );
reset( $return['posts'] );
if ( ( $return['found'] > count( $return['posts'] ) ) && $last_post ) {
if ( ! isset( $return[$key] ) ) {
$return[$key] = (object) array();
}
$return[$key]->next_page = $this->build_page_handle( $last_post, $query );
}
}
break;
}
}
$return['found'] -= $excluded_count;
return $return;
}
function build_page_handle( $post, $query ) {
$column = $query['orderby'];
if ( ! $column ) {
$column = 'date';
}
return build_query( array( 'value' => urlencode($post[$column]), 'id' => $post['ID'] ) );
}
function _build_date_range_query( $column, $range, $where ) {
global $wpdb;
switch ( count( $range ) ) {
case 2 :
$where .= $wpdb->prepare(
" AND `$wpdb->posts`.$column >= CAST( %s AS DATETIME ) AND `$wpdb->posts`.$column < CAST( %s AS DATETIME ) ",
$range['after'],
$range['before']
);
break;
case 1 :
if ( isset( $range['before'] ) ) {
$where .= $wpdb->prepare(
" AND `$wpdb->posts`.$column < CAST( %s AS DATETIME ) ",
$range['before']
);
} else {
$where .= $wpdb->prepare(
" AND `$wpdb->posts`.$column > CAST( %s AS DATETIME ) ",
$range['after']
);
}
break;
}
return $where;
}
function handle_date_range( $where ) {
return $this->_build_date_range_query( 'post_date', $this->date_range, $where );
}
function handle_modified_range( $where ) {
return $this->_build_date_range_query( 'post_modified_gmt', $this->modified_range, $where );
}
function handle_where_for_page_handle( $where ) {
global $wpdb;
$column = $this->performed_query['orderby'];
if ( ! $column ) {
$column = 'date';
}
$order = $this->performed_query['order'];
if ( ! $order ) {
$order = 'DESC';
}
if ( ! in_array( $column, array( 'ID', 'title', 'date', 'modified', 'comment_count' ) ) ) {
return $where;
}
if ( ! in_array( $order, array( 'DESC', 'ASC' ) ) ) {
return $where;
}
$db_column = '';
$db_value = '';
switch( $column ) {
case 'ID':
$db_column = 'ID';
$db_value = '%d';
break;
case 'title':
$db_column = 'post_title';
$db_value = '%s';
break;
case 'date':
$db_column = 'post_date';
$db_value = 'CAST( %s as DATETIME )';
break;
case 'modified':
$db_column = 'post_modified';
$db_value = 'CAST( %s as DATETIME )';
break;
case 'comment_count':
$db_column = 'comment_count';
$db_value = '%d';
break;
}
if ( 'DESC'=== $order ) {
$db_order = '<';
} else {
$db_order = '>';
}
// Add a clause that limits the results to items beyond the passed item, or equivalent to the passed item
// but with an ID beyond the passed item. When we're ordering by the ID already, we only ask for items
// beyond the passed item.
$where .= $wpdb->prepare( " AND ( ( `$wpdb->posts`.`$db_column` $db_order $db_value ) ", $this->page_handle['value'] );
if ( $db_column !== 'ID' ) {
$where .= $wpdb->prepare( "OR ( `$wpdb->posts`.`$db_column` = $db_value AND `$wpdb->posts`.ID $db_order %d )", $this->page_handle['value'], $this->page_handle['id'] );
}
$where .= ' )';
return $where;
}
function handle_orderby_for_page_handle( $orderby ) {
global $wpdb;
if ( $this->performed_query['orderby'] === 'ID' ) {
// bail if we're already ordering by ID
return $orderby;
}
if ( $orderby ) {
$orderby .= ' ,';
}
$order = $this->performed_query['order'];
if ( ! $order ) {
$order = 'DESC';
}
$orderby .= " `$wpdb->posts`.ID $order";
return $orderby;
}
}