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<?php |
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/** |
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* Authorize_Json_Api handler class. |
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* Used to handle connections via JSON API. |
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* Ported from the Jetpack class. |
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* |
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* @since 2.7.6 Ported from the Jetpack class. |
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* |
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* @package automattic/jetpack-connection |
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*/ |
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|
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namespace Automattic\Jetpack\Connection; |
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|
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use Automattic\Jetpack\Redirect; |
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use Automattic\Jetpack\Status\Host; |
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use Jetpack_Options; |
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|
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/** |
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* Authorize_Json_Api handler class. |
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*/ |
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class Authorize_Json_Api { |
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/** |
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* Verified data for JSON authorization request |
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* |
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* @since 2.7.6 |
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* |
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* @var array |
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*/ |
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public $json_api_authorization_request = array(); |
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|
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/** |
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* Verifies the request by checking the signature |
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* |
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* @since jetpack-4.6.0 Method was updated to use `$_REQUEST` instead of `$_GET` and `$_POST`. Method also updated to allow |
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* passing in an `$environment` argument that overrides `$_REQUEST`. This was useful for integrating with SSO. |
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* @since 2.7.6 Ported from Jetpack to the Connection package. |
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* |
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* @param null|array $environment Value to override $_REQUEST. |
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* |
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* @return void |
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*/ |
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public function verify_json_api_authorization_request( $environment = null ) { |
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$environment = $environment === null |
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? $_REQUEST // phpcs:ignore WordPress.Security.NonceVerification.Recommended -- nonce verification handled later in function and request data are 1) used to verify a cryptographic signature of the request data and 2) sanitized later in function. |
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: $environment; |
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|
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if ( ! isset( $environment['token'] ) ) { |
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wp_die( esc_html__( 'You must connect your Jetpack plugin to WordPress.com to use this feature.', 'jetpack-connection' ) ); |
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} |
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|
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list( $env_token,, $env_user_id ) = explode( ':', $environment['token'] ); |
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$token = ( new Tokens() )->get_access_token( (int) $env_user_id, $env_token ); |
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if ( ! $token || empty( $token->secret ) ) { |
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wp_die( esc_html__( 'You must connect your Jetpack plugin to WordPress.com to use this feature.', 'jetpack-connection' ) ); |
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} |
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|
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$die_error = __( 'Someone may be trying to trick you into giving them access to your site. Or it could be you just encountered a bug :). Either way, please close this window.', 'jetpack-connection' ); |
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|
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// Host has encoded the request URL, probably as a result of a bad http => https redirect. |
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if ( |
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preg_match( '/https?%3A%2F%2F/i', esc_url_raw( wp_unslash( $_GET['redirect_to'] ) ) ) > 0 // phpcs:ignore WordPress.Security.NonceVerification.Recommended, WordPress.Security.ValidatedSanitizedInput.InputNotValidated -- no site changes, we're erroring out. |
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) { |
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/** |
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* Jetpack authorisation request Error. |
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* |
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* @since jetpack-7.5.0 |
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*/ |
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do_action( 'jetpack_verify_api_authorization_request_error_double_encode' ); |
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$die_error = sprintf( |
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/* translators: %s is a URL */ |
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__( 'Your site is incorrectly double-encoding redirects from http to https. This is preventing Jetpack from authenticating your connection. Please visit our <a href="%s">support page</a> for details about how to resolve this.', 'jetpack-connection' ), |
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esc_url( Redirect::get_url( 'jetpack-support-double-encoding' ) ) |
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); |
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} |
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|
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$jetpack_signature = new \Jetpack_Signature( $token->secret, (int) Jetpack_Options::get_option( 'time_diff' ) ); |
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|
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if ( isset( $environment['jetpack_json_api_original_query'] ) ) { |
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$signature = $jetpack_signature->sign_request( |
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$environment['token'], |
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$environment['timestamp'], |
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$environment['nonce'], |
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'', |
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'GET', |
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$environment['jetpack_json_api_original_query'], |
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null, |
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true |
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); |
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} else { |
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$signature = $jetpack_signature->sign_current_request( |
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array( |
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'body' => null, |
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'method' => 'GET', |
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) |
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); |
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} |
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|
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if ( ! $signature ) { |
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wp_die( |
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wp_kses( |
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$die_error, |
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array( |
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'a' => array( |
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'href' => array(), |
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), |
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) |
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) |
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); |
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} elseif ( is_wp_error( $signature ) ) { |
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wp_die( |
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wp_kses( |
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$die_error, |
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array( |
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'a' => array( |
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'href' => array(), |
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), |
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) |
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) |
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); |
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} elseif ( ! hash_equals( $signature, $environment['signature'] ) ) { |
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if ( is_ssl() ) { |
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// If we signed an HTTP request on the Jetpack Servers, but got redirected to HTTPS by the local blog, check the HTTP signature as well. |
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$signature = $jetpack_signature->sign_current_request( |
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array( |
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'scheme' => 'http', |
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'body' => null, |
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'method' => 'GET', |
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) |
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); |
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if ( ! $signature || is_wp_error( $signature ) || ! hash_equals( $signature, $environment['signature'] ) ) { |
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wp_die( |
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wp_kses( |
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$die_error, |
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array( |
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'a' => array( |
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'href' => array(), |
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), |
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) |
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) |
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); |
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} |
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} else { |
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wp_die( |
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wp_kses( |
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$die_error, |
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array( |
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'a' => array( |
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'href' => array(), |
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), |
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) |
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) |
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); |
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} |
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} |
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|
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$timestamp = (int) $environment['timestamp']; |
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$nonce = stripslashes( (string) $environment['nonce'] ); |
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|
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if ( ! ( new Nonce_Handler() )->add( $timestamp, $nonce ) ) { |
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// De-nonce the nonce, at least for 5 minutes. |
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// We have to reuse this nonce at least once (used the first time when the initial request is made, used a second time when the login form is POSTed). |
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$old_nonce_time = get_option( "jetpack_nonce_{$timestamp}_{$nonce}" ); |
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if ( $old_nonce_time < time() - 300 ) { |
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wp_die( esc_html__( 'The authorization process expired. Please go back and try again.', 'jetpack-connection' ) ); |
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} |
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} |
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|
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$data = json_decode( |
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base64_decode( stripslashes( $environment['data'] ) ) // phpcs:ignore WordPress.PHP.DiscouragedPHPFunctions.obfuscation_base64_decode |
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); |
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$data_filters = array( |
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'state' => 'opaque', |
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'client_id' => 'int', |
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'client_title' => 'string', |
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'client_image' => 'url', |
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); |
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|
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foreach ( $data_filters as $key => $sanitation ) { |
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if ( ! isset( $data->$key ) ) { |
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wp_die( |
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wp_kses( |
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$die_error, |
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array( |
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'a' => array( |
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'href' => array(), |
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), |
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) |
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) |
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); |
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} |
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|
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switch ( $sanitation ) { |
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case 'int': |
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$this->json_api_authorization_request[ $key ] = (int) $data->$key; |
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break; |
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case 'opaque': |
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$this->json_api_authorization_request[ $key ] = (string) $data->$key; |
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break; |
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case 'string': |
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$this->json_api_authorization_request[ $key ] = wp_kses( (string) $data->$key, array() ); |
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break; |
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case 'url': |
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$this->json_api_authorization_request[ $key ] = esc_url_raw( (string) $data->$key ); |
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break; |
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} |
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} |
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|
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if ( empty( $this->json_api_authorization_request['client_id'] ) ) { |
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wp_die( |
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wp_kses( |
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$die_error, |
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array( |
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'a' => array( |
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'href' => array(), |
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), |
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) |
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) |
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); |
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} |
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} |
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|
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/** |
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* Add the Access Code details to the public-api.wordpress.com redirect. |
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* |
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* @since 2.7.6 Ported from Jetpack to the Connection package. |
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* |
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* @param string $redirect_to URL. |
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* @param string $original_redirect_to URL. |
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* @param \WP_User $user WP_User for the redirect. |
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* |
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* @return string |
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*/ |
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public function add_token_to_login_redirect_json_api_authorization( $redirect_to, $original_redirect_to, $user ) { |
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return add_query_arg( |
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urlencode_deep( |
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array( |
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'jetpack-code' => get_user_meta( |
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$user->ID, |
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'jetpack_json_api_' . $this->json_api_authorization_request['client_id'], |
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true |
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), |
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'jetpack-user-id' => (int) $user->ID, |
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'jetpack-state' => $this->json_api_authorization_request['state'], |
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) |
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), |
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$redirect_to |
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); |
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} |
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|
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/** |
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* If someone logs in to approve API access, store the Access Code in usermeta. |
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* |
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* @since 2.7.6 Ported from Jetpack to the Connection package. |
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* |
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* @param string $user_login Unused. |
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* @param \WP_User $user User logged in. |
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* |
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* @return void |
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*/ |
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public function store_json_api_authorization_token( $user_login, $user ) { |
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add_filter( 'login_redirect', array( $this, 'add_token_to_login_redirect_json_api_authorization' ), 10, 3 ); |
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add_filter( 'allowed_redirect_hosts', array( Host::class, 'allow_wpcom_public_api_domain' ) ); |
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$token = wp_generate_password( 32, false ); |
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update_user_meta( $user->ID, 'jetpack_json_api_' . $this->json_api_authorization_request['client_id'], $token ); |
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} |
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|
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/** |
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* HTML for the JSON API authorization notice. |
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* |
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* @since 2.7.6 Ported from Jetpack to the Connection package. |
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* |
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* @return string |
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*/ |
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public function login_message_json_api_authorization() { |
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return '<p class="message">' . sprintf( |
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/* translators: Name/image of the client requesting authorization */ |
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esc_html__( '%s wants to access your site’s data. Log in to authorize that access.', 'jetpack-connection' ), |
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'<strong>' . esc_html( $this->json_api_authorization_request['client_title'] ) . '</strong>' |
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) . '<img src="' . esc_url( $this->json_api_authorization_request['client_image'] ) . '" /></p>'; |
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} |
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} |
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|
