return $http;
}
+/**
+ * Retrieve the raw response from a safe HTTP request.
+ *
+ * This function is ideal when the HTTP request is being made to an arbitrary
+ * URL. The URL is validated to avoid redirection and request forgery attacks.
+ *
+ * @see wp_remote_request() For more information on the response array format
+ * and default arguments.
+ *
+ * @since 3.6.0
+ *
+ * @param string $url Site URL to retrieve.
+ * @param array $args Optional. Override the defaults.
+ * @return WP_Error|array The response or WP_Error on failure.
+ */
+function wp_safe_remote_request( $url, $args = array() ) {
+ $args['reject_unsafe_urls'] = true;
+ $http = _wp_http_get_object();
+ return $http->request( $url, $args );
+}
+
+/**
+ * Retrieve the raw response from a safe HTTP request using the GET method.
+ *
+ * This function is ideal when the HTTP request is being made to an arbitrary
+ * URL. The URL is validated to avoid redirection and request forgery attacks.
+ *
+ * @see wp_remote_request() For more information on the response array format
+ * and default arguments.
+ *
+ * @since 3.6.0
+ *
+ * @param string $url Site URL to retrieve.
+ * @param array $args Optional. Override the defaults.
+ * @return WP_Error|array The response or WP_Error on failure.
+ */
+function wp_safe_remote_get( $url, $args = array() ) {
+ $args['reject_unsafe_urls'] = true;
+ $http = _wp_http_get_object();
+ return $http->get( $url, $args );
+}
+
+/**
+ * Retrieve the raw response from a safe HTTP request using the POST method.
+ *
+ * This function is ideal when the HTTP request is being made to an arbitrary
+ * URL. The URL is validated to avoid redirection and request forgery attacks.
+ *
+ * @see wp_remote_request() For more information on the response array format
+ * and default arguments.
+ *
+ * @since 3.6.0
+ *
+ * @param string $url Site URL to retrieve.
+ * @param array $args Optional. Override the defaults.
+ * @return WP_Error|array The response or WP_Error on failure.
+ */
+function wp_safe_remote_post( $url, $args = array() ) {
+ $args['reject_unsafe_urls'] = true;
+ $http = _wp_http_get_object();
+ return $http->post( $url, $args );
+}
+
+/**
+ * Retrieve the raw response from a safe HTTP request using the HEAD method.
+ *
+ * This function is ideal when the HTTP request is being made to an arbitrary
+ * URL. The URL is validated to avoid redirection and request forgery attacks.
+ *
+ * @see wp_remote_request() For more information on the response array format
+ * and default arguments.
+ *
+ * @since 3.6.0
+ *
+ * @param string $url Site URL to retrieve.
+ * @param array $args Optional. Override the defaults.
+ * @return WP_Error|array The response or WP_Error on failure.
+ */
+function wp_safe_remote_head( $url, $args = array() ) {
+ $args['reject_unsafe_urls'] = true;
+ $http = _wp_http_get_object();
+ return $http->head( $url, $args );
+}
+
/**
* Retrieve the raw response from the HTTP request.
*
* This function is called first to make the request and there are other API
* functions to abstract out the above convoluted setup.
*
+ * List of default arguments:
+ * 'method' => 'GET'
+ * - Default 'GET' for wp_remote_get()
+ * - Default 'POST' for wp_remote_post()
+ * - Default 'HEAD' for wp_remote_head()
+ * 'timeout' => 5
+ * 'redirection' => 5
+ * 'httpversion' => '1.0'
+ * 'user-agent' => 'WordPress/' . $wp_version . '; ' . get_bloginfo( 'url' )
+ * 'blocking' => true
+ * 'headers' => array()
+ * 'cookies' => array()
+ * 'body' => null
+ * 'compress' => false,
+ * 'decompress' => true,
+ * 'sslverify' => true,
+ * 'stream' => false,
+ * 'filename' => null
+ *
* @since 2.7.0
*
* @param string $url Site URL to retrieve.
/**
* Retrieve the raw response from the HTTP request using the GET method.
*
- * @see wp_remote_request() For more information on the response array format.
+ * @see wp_remote_request() For more information on the response array format and default arguments.
*
* @since 2.7.0
*
/**
* Retrieve the raw response from the HTTP request using the POST method.
*
- * @see wp_remote_request() For more information on the response array format.
+ * @see wp_remote_request() For more information on the response array format and default arguments.
*
* @since 2.7.0
*
/**
* Retrieve the raw response from the HTTP request using the HEAD method.
*
- * @see wp_remote_request() For more information on the response array format.
+ * @see wp_remote_request() For more information on the response array format and default arguments.
*
* @since 2.7.0
*
* @return mixed URL or false on failure.
*/
function wp_http_validate_url( $url ) {
- $url = esc_url_raw( $url, array( 'http', 'https' ) );
+ $url = wp_kses_bad_protocol( $url, array( 'http', 'https' ) );
if ( ! $url )
return false;
$parsed_url = @parse_url( $url );
- if ( ! $parsed_url )
+ if ( ! $parsed_url || empty( $parsed_url['host'] ) )
return false;
if ( isset( $parsed_url['user'] ) || isset( $parsed_url['pass'] ) )
$ip = false;
}
if ( $ip ) {
- if ( '127.0.0.1' === $ip )
- return false;
$parts = array_map( 'intval', explode( '.', $ip ) );
- if ( 10 === $parts[0] )
- return false;
- if ( 172 === $parts[0] && 16 <= $parts[1] && 31 >= $parts[1] )
- return false;
- if ( 192 === $parts[0] && 168 === $parts[1] )
- return false;
+ if ( '127.0.0.1' === $ip
+ || ( 10 === $parts[0] )
+ || ( 172 === $parts[0] && 16 <= $parts[1] && 31 >= $parts[1] )
+ || ( 192 === $parts[0] && 168 === $parts[1] )
+ ) {
+ // If host appears local, reject unless specifically allowed.
+ if ( ! apply_filters( 'http_request_host_is_external', false, $host, $url ) )
+ return false;
+ }
}
}
return false;
}
+
+/**
+ * Whitelists allowed redirect hosts for safe HTTP requests as well.
+ *
+ * Attached to the http_request_host_is_external filter.
+ *
+ * @since 3.6.0
+ *
+ * @param bool $is_external
+ * @param string $host
+ * @return bool
+ */
+function allowed_http_request_hosts( $is_external, $host ) {
+ if ( ! $is_external && wp_validate_redirect( 'http://' . $host ) )
+ $is_external = true;
+ return $is_external;
+}
+
+/**
+ * Whitelists any domain in a multisite installation for safe HTTP requests.
+ *
+ * Attached to the http_request_host_is_external filter.
+ *
+ * @since 3.6.0
+ *
+ * @param bool $is_external
+ * @param string $host
+ * @return bool
+ */
+function ms_allowed_http_request_hosts( $is_external, $host ) {
+ global $wpdb, $current_site;
+ static $queried = array();
+ if ( $is_external )
+ return $is_external;
+ if ( $host === $current_site->domain )
+ return true;
+ if ( isset( $queried[ $host ] ) )
+ return $queried[ $host ];
+ $queried[ $host ] = (bool) $wpdb->get_var( $wpdb->prepare( "SELECT domain FROM $wpdb->blogs WHERE domain = %s LIMIT 1", $host ) );
+ return $queried[ $host ];
+}