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Fix Signature and Callback (Issues WP-API/OAuth1#59, WP-API/OAuth1#64, WP-API/OAuth1#91) #92

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Fix Signature and Callback (Issues WP-API/OAuth1#59, WP-API/OAuth1#64, WP-API/OAuth1#91) #92

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0cb6065
Ensure OAuth1 signature is created as per the spec
AlexC May 21, 2015
c41eb30
Remove normalize_parameters function.
coderkevin Nov 6, 2015
dd283fa
Fix issue WP-API/OAuth1#59, OAuth callback isn't called
sblaz Jun 4, 2015
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32 changes: 8 additions & 24 deletions lib/class-wp-json-authentication-oauth1.php
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Original file line number Diff line number Diff line change
Expand Up @@ -50,7 +50,7 @@ public function parse_header( $header ) {
$params = array();
if ( preg_match_all( '/(oauth_[a-z_-]*)=(:?"([^"]*)"|([^,]*))/', $header, $matches ) ) {
foreach ($matches[1] as $i => $h) {
$params[$h] = urldecode( empty($matches[3][$i]) ? $matches[4][$i] : $matches[3][$i] );
$params[$h] = rawurldecode( empty($matches[3][$i]) ? $matches[4][$i] : $matches[3][$i] );
}
if (isset($params['realm'])) {
unset($params['realm']);
Expand Down Expand Up @@ -365,13 +365,14 @@ public function generate_request_token( $params ) {

// Generate token
$key = apply_filters( 'json_oauth1_request_token_key', wp_generate_password( self::TOKEN_KEY_LENGTH, false ) );
$callback = $params['oauth_callback'];
$data = array(
'key' => $key,
'secret' => wp_generate_password( self::TOKEN_SECRET_LENGTH, false ),
'consumer' => $consumer->ID,
'authorized' => false,
'expiration' => time() + 24 * HOUR_IN_SECONDS,
'callback' => null,
'callback' => $callback,
'verifier' => null,
'user' => null,
);
Expand Down Expand Up @@ -551,23 +552,20 @@ protected function check_oauth_signature( $consumer, $oauth_params, $token = nul

$params = array_merge( $params, $oauth_params );

$base_request_uri = rawurlencode( get_home_url( null, parse_url( $_SERVER['REQUEST_URI'], PHP_URL_PATH ) ) );
$base_request_uri = get_home_url( null, parse_url( $_SERVER['REQUEST_URI'], PHP_URL_PATH ) );

// get the signature provided by the consumer and remove it from the parameters prior to checking the signature
$consumer_signature = rawurldecode( $params['oauth_signature'] );
unset( $params['oauth_signature'] );

// normalize parameter key/values
array_walk_recursive( $params, array( $this, 'normalize_parameters' ) );

// sort parameters
if ( ! uksort( $params, 'strcmp' ) )
return new WP_Error( 'json_oauth1_failed_parameter_sort', __( 'Invalid Signature - failed to sort parameters' ), array( 'status' => 401 ) );

$query_string = $this->create_signature_string( $params );

$token = (array) $token;
$string_to_sign = $http_method . '&' . $base_request_uri . '&' . $query_string;
$string_to_sign = $http_method . '&' . rawurlencode( $base_request_uri ) . '&' . rawurlencode( $query_string );
$key_parts = array(
$consumer->secret,
( $token ? $token['secret'] : '' )
Expand Down Expand Up @@ -604,7 +602,7 @@ protected function check_oauth_signature( $consumer, $oauth_params, $token = nul
* @return string Signature string
*/
public function create_signature_string( $params ) {
return implode( '%26', $this->join_with_equals_sign( $params ) ); // join with ampersand
return implode( '&', $this->join_with_equals_sign( $params ) ); // join with ampersand
}

/**
Expand All @@ -624,27 +622,13 @@ public function join_with_equals_sign( $params, $query_params = array(), $key =
if ( $key ) {
$param_key = $key . '[' . $param_key . ']'; // Handle multi-dimensional array
}
$string = $param_key . '=' . $param_value; // join with equals sign
$query_params[] = urlencode( $string );
$string = rawurlencode( $param_key ) . '=' . rawurlencode( $param_value ); // join with equals sign
$query_params[] = $string;
}
}
return $query_params;
}

/**
* Normalize each parameter by assuming each parameter may have already been encoded, so attempt to decode, and then
* re-encode according to RFC 3986
*
* @since 2.1
* @see rawurlencode()
* @param string $key
* @param string $value
*/
protected function normalize_parameters( &$key, &$value ) {
$key = rawurlencode( rawurldecode( $key ) );
$value = rawurlencode( rawurldecode( $value ) );
}

/**
* Verify that the timestamp and nonce provided with the request are valid
*
Expand Down