Issues in class.jetpack-signature.php - All Issues - Inspection of "Remove Omnisearch." - Automattic/jetpack - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — deprecate/omnisearch ( b6b013 )

by George

created 2017-06-21 22:23 UTC

class.jetpack-signature.php (5 issues)

Labels

Severity

Upgrade to new PHP Analysis Engine

These results are based on our legacy PHP analysis, consider migrating to our new PHP analysis engine instead. Learn more

<?php

defined( 'JETPACK_SIGNATURE__HTTP_PORT'  ) or define( 'JETPACK_SIGNATURE__HTTP_PORT' , 80  );
// Logical operators have lower precedence:
$f = false or true;

// is executed like this:
($f = false) or true;


// Boolean operators have higher precedence:
$f = false || true;

// is executed like this:
$f = (false || true);
defined( 'JETPACK_SIGNATURE__HTTPS_PORT' ) or define( 'JETPACK_SIGNATURE__HTTPS_PORT', 443 );
// Logical operators have lower precedence:
$f = false or true;

// is executed like this:
($f = false) or true;


// Boolean operators have higher precedence:
$f = false || true;

// is executed like this:
$f = (false || true);
defined( 'JETPACK__WPCOM_JSON_API_HOST' )  or define( 'JETPACK__WPCOM_JSON_API_HOST', 'public-api.wordpress.com' );
// Logical operators have lower precedence:
$f = false or true;

// is executed like this:
($f = false) or true;


// Boolean operators have higher precedence:
$f = false || true;

// is executed like this:
$f = (false || true);

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;
class MyClass { }

$x = new MyClass();
$x->foo = true;
	}

	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_sheme', 'Invalid URL scheme' );
			}
		} else {
			if ( is_ssl() ) {
				$scheme = 'https';
			} else {
				$scheme = 'http';
			}
		}

		if ( is_ssl() ) {
			$port = JETPACK_SIGNATURE__HTTPS_PORT == $_SERVER['SERVER_PORT'] ? '' : $_SERVER['SERVER_PORT'];
		} else {
			$port = JETPACK_SIGNATURE__HTTP_PORT  == $_SERVER['SERVER_PORT'] ? '' : $_SERVER['SERVER_PORT'];
		}

		$url = "{$scheme}://{$_SERVER['HTTP_HOST']}:{$port}" . stripslashes( $_SERVER['REQUEST_URI'] );

		if ( array_key_exists( 'body', $override ) && !is_null( $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;
		} else {
			$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' );
		}

		$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 ( is_null( $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 ( $parsed['host'] === JETPACK__WPCOM_JSON_API_HOST ) {
			$parsed['host'] = 'public-api.wordpress.com';
		}

		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'] : '' ) );

		$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 );
$a = "a";
$ab = "ab";
$abc = "abc";

		sort( $pairs );

		return $pairs;
	}

	function encode_3986( $string ) {
		$string = rawurlencode( $string );
		return str_replace( '%7E', '~', $string ); // prior to PHP 5.3, rawurlencode was RFC 1738
	}

	function join_with_equal_sign( $name, $value ) {
		return "{$name}={$value}";
	}
}

function jetpack_sha1_base64( $text ) {
	return base64_encode( sha1( $text, true ) );
}


Push — deprecate/omnisearch ( b6b013 )

class.jetpack-signature.php (5 issues)

Labels

Severity

Introduced By

Upgrade to new PHP Analysis Engine

Logical Operators are used for Control-Flow

Logical Operators are used for Control-Flow

Logical Operators are used for Control-Flow

Automattic / jetpack

Push — deprecate/omnisearch ( b6b013 )

class.jetpack-signature.php (5 issues)

Labels

Severity

Introduced By

Upgrade to new PHP Analysis Engine

Logical Operators are used for Control-Flow

Logical Operators are used for Control-Flow

Logical Operators are used for Control-Flow

Duplication Side-by-Side

Filter issues like