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path: root/plugins/jetpack/class.jetpack-signature.php
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-rw-r--r--plugins/jetpack/class.jetpack-signature.php266
1 files changed, 0 insertions, 266 deletions
diff --git a/plugins/jetpack/class.jetpack-signature.php b/plugins/jetpack/class.jetpack-signature.php
deleted file mode 100644
index 8d925d7d..00000000
--- a/plugins/jetpack/class.jetpack-signature.php
+++ /dev/null
@@ -1,266 +0,0 @@
-<?php
-
-// These constants can be set in wp-config.php to ensure sites behind proxies will still work.
-// Setting these constants, though, is *not* the preferred method. It's better to configure
-// the proxy to send the X-Forwarded-Port header.
-defined( 'JETPACK_SIGNATURE__HTTP_PORT' ) or define( 'JETPACK_SIGNATURE__HTTP_PORT' , 80 );
-defined( 'JETPACK_SIGNATURE__HTTPS_PORT' ) or define( 'JETPACK_SIGNATURE__HTTPS_PORT', 443 );
-
-class Jetpack_Signature {
- public $token;
- public $secret;
-
- function __construct( $access_token, $time_diff = 0 ) {
- $secret = explode( '.', $access_token );
- if ( 2 != count( $secret ) )
- return;
-
- $this->token = $secret[0];
- $this->secret = $secret[1];
- $this->time_diff = $time_diff;
- }
-
- function sign_current_request( $override = array() ) {
- if ( isset( $override['scheme'] ) ) {
- $scheme = $override['scheme'];
- if ( !in_array( $scheme, array( 'http', 'https' ) ) ) {
- return new Jetpack_Error( 'invalid_scheme', 'Invalid URL scheme' );
- }
- } else {
- if ( is_ssl() ) {
- $scheme = 'https';
- } else {
- $scheme = 'http';
- }
- }
-
- $host_port = isset( $_SERVER['HTTP_X_FORWARDED_PORT'] ) ? $_SERVER['HTTP_X_FORWARDED_PORT'] : $_SERVER['SERVER_PORT'];
-
- /**
- * Note: This port logic is tested in the Jetpack_Cxn_Tests->test__server_port_value() test.
- * Please update the test if any changes are made in this logic.
- */
- if ( is_ssl() ) {
- // 443: Standard Port
- // 80: Assume we're behind a proxy without X-Forwarded-Port. Hardcoding "80" here means most sites
- // with SSL termination proxies (self-served, Cloudflare, etc.) don't need to fiddle with
- // the JETPACK_SIGNATURE__HTTPS_PORT constant. The code also implies we can't talk to a
- // site at https://example.com:80/ (which would be a strange configuration).
- // JETPACK_SIGNATURE__HTTPS_PORT: Set this constant in wp-config.php to the back end webserver's port
- // if the site is behind a proxy running on port 443 without
- // X-Forwarded-Port and the back end's port is *not* 80. It's better,
- // though, to configure the proxy to send X-Forwarded-Port.
- $port = in_array( $host_port, array( 443, 80, JETPACK_SIGNATURE__HTTPS_PORT ) ) ? '' : $host_port;
- } else {
- // 80: Standard Port
- // JETPACK_SIGNATURE__HTTPS_PORT: Set this constant in wp-config.php to the back end webserver's port
- // if the site is behind a proxy running on port 80 without
- // X-Forwarded-Port. It's better, though, to configure the proxy to
- // send X-Forwarded-Port.
- $port = in_array( $host_port, array( 80, JETPACK_SIGNATURE__HTTP_PORT ) ) ? '' : $host_port;
- }
-
- $url = "{$scheme}://{$_SERVER['HTTP_HOST']}:{$port}" . stripslashes( $_SERVER['REQUEST_URI'] );
-
- if ( array_key_exists( 'body', $override ) && ! empty( $override['body'] ) ) {
- $body = $override['body'];
- } else if ( 'POST' == strtoupper( $_SERVER['REQUEST_METHOD'] ) ) {
- $body = isset( $GLOBALS['HTTP_RAW_POST_DATA'] ) ? $GLOBALS['HTTP_RAW_POST_DATA'] : null;
-
- // Convert the $_POST to the body, if the body was empty. This is how arrays are hashed
- // and encoded on the Jetpack side.
- if ( defined( 'IS_WPCOM' ) && IS_WPCOM ) {
- if ( empty( $body ) && is_array( $_POST ) && count( $_POST ) > 0 ) {
- $body = $_POST;
- }
- }
- } else if ( 'PUT' == strtoupper( $_SERVER['REQUEST_METHOD'] ) ) {
- // This is a little strange-looking, but there doesn't seem to be another way to get the PUT body
- $raw_put_data = file_get_contents( 'php://input' );
- parse_str( $raw_put_data, $body );
-
- if ( defined( 'IS_WPCOM' ) && IS_WPCOM ) {
- $put_data = json_decode( $raw_put_data, true );
- if ( is_array( $put_data ) && count( $put_data ) > 0 ) {
- $body = $put_data;
- }
- }
- } else {
- $body = null;
- }
-
- if ( empty( $body ) ) {
- $body = null;
- }
-
- $a = array();
- foreach ( array( 'token', 'timestamp', 'nonce', 'body-hash' ) as $parameter ) {
- if ( isset( $override[$parameter] ) ) {
- $a[$parameter] = $override[$parameter];
- } else {
- $a[$parameter] = isset( $_GET[$parameter] ) ? stripslashes( $_GET[$parameter] ) : '';
- }
- }
-
- $method = isset( $override['method'] ) ? $override['method'] : $_SERVER['REQUEST_METHOD'];
- return $this->sign_request( $a['token'], $a['timestamp'], $a['nonce'], $a['body-hash'], $method, $url, $body, true );
- }
-
- // body_hash v. body-hash is annoying. Refactor to accept an array?
- function sign_request( $token = '', $timestamp = 0, $nonce = '', $body_hash = '', $method = '', $url = '', $body = null, $verify_body_hash = true ) {
- if ( !$this->secret ) {
- return new Jetpack_Error( 'invalid_secret', 'Invalid secret' );
- }
-
- if ( !$this->token ) {
- return new Jetpack_Error( 'invalid_token', 'Invalid token' );
- }
-
- list( $token ) = explode( '.', $token );
-
- if ( 0 !== strpos( $token, "$this->token:" ) ) {
- return new Jetpack_Error( 'token_mismatch', 'Incorrect token' );
- }
-
- // If we got an array at this point, let's encode it, so we can see what it looks like as a string.
- if ( is_array( $body ) ) {
- if ( count( $body ) > 0 ) {
- $body = json_encode( $body );
-
- } else {
- $body = '';
- }
- }
-
- $required_parameters = array( 'token', 'timestamp', 'nonce', 'method', 'url' );
- if ( !is_null( $body ) ) {
- $required_parameters[] = 'body_hash';
- if ( !is_string( $body ) ) {
- return new Jetpack_Error( 'invalid_body', 'Body is malformed.' );
- }
- }
-
- foreach ( $required_parameters as $required ) {
- if ( !is_scalar( $$required ) ) {
- return new Jetpack_Error( 'invalid_signature', sprintf( 'The required "%s" parameter is malformed.', str_replace( '_', '-', $required ) ) );
- }
-
- if ( !strlen( $$required ) ) {
- return new Jetpack_Error( 'invalid_signature', sprintf( 'The required "%s" parameter is missing.', str_replace( '_', '-', $required ) ) );
- }
- }
-
- if ( empty( $body ) ) {
- if ( $body_hash ) {
- return new Jetpack_Error( 'invalid_body_hash', 'The body hash does not match.' );
- }
- } else {
- if ( $verify_body_hash && jetpack_sha1_base64( $body ) !== $body_hash ) {
- return new Jetpack_Error( 'invalid_body_hash', 'The body hash does not match.' );
- }
- }
-
- $parsed = parse_url( $url );
- if ( !isset( $parsed['host'] ) ) {
- return new Jetpack_Error( 'invalid_signature', sprintf( 'The required "%s" parameter is malformed.', 'url' ) );
- }
-
- if ( !empty( $parsed['port'] ) ) {
- $port = $parsed['port'];
- } else {
- if ( 'http' == $parsed['scheme'] ) {
- $port = 80;
- } else if ( 'https' == $parsed['scheme'] ) {
- $port = 443;
- } else {
- return new Jetpack_Error( 'unknown_scheme_port', "The scheme's port is unknown" );
- }
- }
-
- if ( !ctype_digit( "$timestamp" ) || 10 < strlen( $timestamp ) ) { // If Jetpack is around in 275 years, you can blame mdawaffe for the bug.
- return new Jetpack_Error( 'invalid_signature', sprintf( 'The required "%s" parameter is malformed.', 'timestamp' ) );
- }
-
- $local_time = $timestamp - $this->time_diff;
- if ( $local_time < time() - 600 || $local_time > time() + 300 ) {
- return new Jetpack_Error( 'invalid_signature', 'The timestamp is too old.' );
- }
-
- if ( 12 < strlen( $nonce ) || preg_match( '/[^a-zA-Z0-9]/', $nonce ) ) {
- return new Jetpack_Error( 'invalid_signature', sprintf( 'The required "%s" parameter is malformed.', 'nonce' ) );
- }
-
- $normalized_request_pieces = array(
- $token,
- $timestamp,
- $nonce,
- $body_hash,
- strtoupper( $method ),
- strtolower( $parsed['host'] ),
- $port,
- $parsed['path'],
- // Normalized Query String
- );
-
- $normalized_request_pieces = array_merge( $normalized_request_pieces, $this->normalized_query_parameters( isset( $parsed['query'] ) ? $parsed['query'] : '' ) );
- $flat_normalized_request_pieces = array();
- foreach ($normalized_request_pieces as $piece) {
- if ( is_array( $piece ) ) {
- foreach ( $piece as $subpiece ) {
- $flat_normalized_request_pieces[] = $subpiece;
- }
- } else {
- $flat_normalized_request_pieces[] = $piece;
- }
- }
- $normalized_request_pieces = $flat_normalized_request_pieces;
-
- $normalized_request_string = join( "\n", $normalized_request_pieces ) . "\n";
-
- return base64_encode( hash_hmac( 'sha1', $normalized_request_string, $this->secret, true ) );
- }
-
- function normalized_query_parameters( $query_string ) {
- parse_str( $query_string, $array );
- if ( get_magic_quotes_gpc() )
- $array = stripslashes_deep( $array );
-
- unset( $array['signature'] );
-
- $names = array_keys( $array );
- $values = array_values( $array );
-
- $names = array_map( array( $this, 'encode_3986' ), $names );
- $values = array_map( array( $this, 'encode_3986' ), $values );
-
- $pairs = array_map( array( $this, 'join_with_equal_sign' ), $names, $values );
-
- sort( $pairs );
-
- return $pairs;
- }
-
- function encode_3986( $string_or_array ) {
- if ( is_array( $string_or_array ) ) {
- return array_map( array( $this, 'encode_3986' ), $string_or_array );
- }
-
- $string_or_array = rawurlencode( $string_or_array );
- return str_replace( '%7E', '~', $string_or_array ); // prior to PHP 5.3, rawurlencode was RFC 1738
- }
-
- function join_with_equal_sign( $name, $value ) {
- if ( is_array( $value ) ) {
- $result = array();
- foreach ( $value as $array_key => $array_value ) {
- $result[] = $name . '[' . $array_key . ']' . '=' . $array_value;
- }
- return $result;
- }
- return "{$name}={$value}";
- }
-}
-
-function jetpack_sha1_base64( $text ) {
- return base64_encode( sha1( $text, true ) );
-}