<?php
class Akismet_REST_API {
/**
* Register the REST API routes.
*/
public static function init() {
if ( ! function_exists( 'register_rest_route' ) ) {
// The REST API wasn't integrated into core until 4.4, and we support 4.0+ (for now).
return false;
}
register_rest_route( 'akismet/v1', '/key', array(
array(
'methods' => WP_REST_Server::READABLE,
'permission_callback' => array( 'Akismet_REST_API', 'privileged_permission_callback' ),
'callback' => array( 'Akismet_REST_API', 'get_key' ),
), array(
'methods' => WP_REST_Server::EDITABLE,
'permission_callback' => array( 'Akismet_REST_API', 'privileged_permission_callback' ),
'callback' => array( 'Akismet_REST_API', 'set_key' ),
'args' => array(
'key' => array(
'required' => true,
'type' => 'string',
'sanitize_callback' => array( 'Akismet_REST_API', 'sanitize_key' ),
'description' => __( 'A 12-character Akismet API key. Available at akismet.com/get/', 'akismet' ),
),
),
), array(
'methods' => WP_REST_Server::DELETABLE,
'permission_callback' => array( 'Akismet_REST_API', 'privileged_permission_callback' ),
'callback' => array( 'Akismet_REST_API', 'delete_key' ),
)
) );
register_rest_route( 'akismet/v1', '/settings/', array(
array(
'methods' => WP_REST_Server::READABLE,
'permission_callback' => array( 'Akismet_REST_API', 'privileged_permission_callback' ),
'callback' => array( 'Akismet_REST_API', 'get_settings' ),
),
array(
'methods' => WP_REST_Server::EDITABLE,
'permission_callback' => array( 'Akismet_REST_API', 'privileged_permission_callback' ),
'callback' => array( 'Akismet_REST_API', 'set_boolean_settings' ),
'args' => array(
'akismet_strictness' => array(
'required' => false,
'type' => 'boolean',
'description' => __( 'If true, Akismet will automatically discard the worst spam automatically rather than putting it in the spam folder.', 'akismet' ),
),
'akismet_show_user_comments_approved' => array(
'required' => false,
'type' => 'boolean',
'description' => __( 'If true, show the number of approved comments beside each comment author in the comments list page.', 'akismet' ),
),
),
)
) );
register_rest_route( 'akismet/v1', '/stats', array(
'methods' => WP_REST_Server::READABLE,
'permission_callback' => array( 'Akismet_REST_API', 'privileged_permission_callback' ),
'callback' => array( 'Akismet_REST_API', 'get_stats' ),
'args' => array(
'interval' => array(
'required' => false,
'type' => 'string',
'sanitize_callback' => array( 'Akismet_REST_API', 'sanitize_interval' ),
'description' => __( 'The time period for which to retrieve stats. Options: 60-days, 6-months, all', 'akismet' ),
'default' => 'all',
),
),
) );
register_rest_route( 'akismet/v1', '/stats/(?P<interval>[\w+])', array(
'args' => array(
'interval' => array(
'description' => __( 'The time period for which to retrieve stats. Options: 60-days, 6-months, all', 'akismet' ),
'type' => 'string',
),
),
array(
'methods' => WP_REST_Server::READABLE,
'permission_callback' => array( 'Akismet_REST_API', 'privileged_permission_callback' ),
'callback' => array( 'Akismet_REST_API', 'get_stats' ),
)
) );
register_rest_route( 'akismet/v1', '/alert', array(
array(
'methods' => WP_REST_Server::READABLE,
'permission_callback' => array( 'Akismet_REST_API', 'remote_call_permission_callback' ),
'callback' => array( 'Akismet_REST_API', 'get_alert' ),
'args' => array(
'key' => array(
'required' => false,
'type' => 'string',
'sanitize_callback' => array( 'Akismet_REST_API', 'sanitize_key' ),
'description' => __( 'A 12-character Akismet API key. Available at akismet.com/get/', 'akismet' ),
),
),
),
array(
'methods' => WP_REST_Server::EDITABLE,
'permission_callback' => array( 'Akismet_REST_API', 'remote_call_permission_callback' ),
'callback' => array( 'Akismet_REST_API', 'set_alert' ),
'args' => array(
'key' => array(
'required' => false,
'type' => 'string',
'sanitize_callback' => array( 'Akismet_REST_API', 'sanitize_key' ),
'description' => __( 'A 12-character Akismet API key. Available at akismet.com/get/', 'akismet' ),
),
),
),
array(
'methods' => WP_REST_Server::DELETABLE,
'permission_callback' => array( 'Akismet_REST_API', 'remote_call_permission_callback' ),
'callback' => array( 'Akismet_REST_API', 'delete_alert' ),
'args' => array(
'key' => array(
'required' => false,
'type' => 'string',
'sanitize_callback' => array( 'Akismet_REST_API', 'sanitize_key' ),
'description' => __( 'A 12-character Akismet API key. Available at akismet.com/get/', 'akismet' ),
),
),
)
) );
}
/**
* Get the current Akismet API key.
*
* @param WP_REST_Request $request
* @return WP_Error|WP_REST_Response
*/
public static function get_key( $request = null ) {
return rest_ensure_response( Akismet::get_api_key() );
}
/**
* Set the API key, if possible.
*
* @param WP_REST_Request $request
* @return WP_Error|WP_REST_Response
*/
public static function set_key( $request ) {
if ( defined( 'WPCOM_API_KEY' ) ) {
return rest_ensure_response( new WP_Error( 'hardcoded_key', __( 'This site\'s API key is hardcoded and cannot be changed via the API.', 'akismet' ), array( 'status'=> 409 ) ) );
}
$new_api_key = $request->get_param( 'key' );
if ( ! self::key_is_valid( $new_api_key ) ) {
return rest_ensure_response( new WP_Error( 'invalid_key', __( 'The value provided is not a valid and registered API key.', 'akismet' ), array( 'status' => 400 ) ) );
}
update_option( 'wordpress_api_key', $new_api_key );
return self::get_key();
}
/**
* Unset the API key, if possible.
*
* @param WP_REST_Request $request
* @return WP_Error|WP_REST_Response
*/
public static function delete_key( $request ) {
if ( defined( 'WPCOM_API_KEY' ) ) {
return rest_ensure_response( new WP_Error( 'hardcoded_key', __( 'This site\'s API key is hardcoded and cannot be deleted.', 'akismet' ), array( 'status'=> 409 ) ) );
}
delete_option( 'wordpress_api_key' );
return rest_ensure_response( true );
}
/**
* Get the Akismet settings.
*
* @param WP_REST_Request $request
* @return WP_Error|WP_REST_Response
*/
public static function get_settings( $request = null ) {
return rest_ensure_response( array(
'akismet_strictness' => ( get_option( 'akismet_strictness', '1' ) === '1' ),
'akismet_show_user_comments_approved' => ( get_option( 'akismet_show_user_comments_approved', '1' ) === '1' ),
) );
}
/**
* Update the Akismet settings.
*
* @param WP_REST_Request $request
* @return WP_Error|WP_REST_Response
*/
public static function set_boolean_settings( $request ) {
foreach ( array(
'akismet_strictness',
'akismet_show_user_comments_approved',
) as $setting_key ) {
$setting_value = $request->get_param( $setting_key );
if ( is_null( $setting_value ) ) {
// This setting was not specified.
continue;
}
// From 4.7+, WP core will ensure that these are always boolean
// values because they are registered with 'type' => 'boolean',
// but we need to do this ourselves for prior versions.
$setting_value = Akismet_REST_API::parse_boolean( $setting_value );
update_option( $setting_key, $setting_value ? '1' : '0' );
}
return self::get_settings();
}
/**
* Parse a numeric or string boolean value into a boolean.
*
* @param mixed $value The value to convert into a boolean.
* @return bool The converted value.
*/
public static function parse_boolean( $value ) {
switch ( $value ) {
case true:
case 'true':
case '1':
case 1:
return true;
case false:
case 'false':
case '0':
case 0:
return false;
default:
return (bool) $value;
}
}
/**
* Get the Akismet stats for a given time period.
*
* Possible `interval` values:
* - all
* - 60-days
* - 6-months
*
* @param WP_REST_Request $request
* @return WP_Error|WP_REST_Response
*/
public static function get_stats( $request ) {
$api_key = Akismet::get_api_key();
$interval = $request->get_param( 'interval' );
$stat_totals = array();
$response = Akismet::http_post( Akismet::build_query( array( 'blog' => get_option( 'home' ), 'key' => $api_key, 'from' => $interval ) ), 'get-stats' );
if ( ! empty( $response[1] ) ) {
$stat_totals[$interval] = json_decode( $response[1] );
}
return rest_ensure_response( $stat_totals );
}
/**
* Get the current alert code and message. Alert codes are used to notify the site owner
* if there's a problem, like a connection issue between their site and the Akismet API,
* invalid requests being sent, etc.
*
* @param WP_REST_Request $request
* @return WP_Error|WP_REST_Response
*/
public static function get_alert( $request ) {
return rest_ensure_response( array(
'code' => get_option( 'akismet_alert_code' ),
'message' => get_option( 'akismet_alert_msg' ),
) );
}
/**
* Update the current alert code and message by triggering a call to the Akismet server.
*
* @param WP_REST_Request $request
* @return WP_Error|WP_REST_Response
*/
public static function set_alert( $request ) {
delete_option( 'akismet_alert_code' );
delete_option( 'akismet_alert_msg' );
// Make a request so the most recent alert code and message are retrieved.
Akismet::verify_key( Akismet::get_api_key() );
return self::get_alert( $request );
}
/**
* Clear the current alert code and message.
*
* @param WP_REST_Request $request
* @return WP_Error|WP_REST_Response
*/
public static function delete_alert( $request ) {
delete_option( 'akismet_alert_code' );
delete_option( 'akismet_alert_msg' );
return self::get_alert( $request );
}
private static function key_is_valid( $key ) {
$response = Akismet::http_post(
Akismet::build_query(
array(
'key' => $key,
'blog' => get_option( 'home' )
)
),
'verify-key'
);
if ( $response[1] == 'valid' ) {
return true;
}
return false;
}
public static function privileged_permission_callback() {
return current_user_can( 'manage_options' );
}
/**
* For calls that Akismet.com makes to the site to clear outdated alert codes, use the API key for authorization.
*/
public static function remote_call_permission_callback( $request ) {
$local_key = Akismet::get_api_key();
return $local_key && ( strtolower( $request->get_param( 'key' ) ) === strtolower( $local_key ) );
}
public static function sanitize_interval( $interval, $request, $param ) {
$interval = trim( $interval );
$valid_intervals = array( '60-days', '6-months', 'all', );
if ( ! in_array( $interval, $valid_intervals ) ) {
$interval = 'all';
}
return $interval;
}
public static function sanitize_key( $key, $request, $param ) {
return trim( $key );
}
}