"Friendica\\": "src/",
"Friendica\\Addon\\": "addon/"
},
- "psr-0": {
- "": "library/"
- },
"files": [
"include/conversation.php",
"include/dba.php",
use Friendica\Object\Image;
use Friendica\Protocol\Activity;
use Friendica\Protocol\Diaspora;
+use Friendica\Security\OAuth1\OAuthRequest;
+use Friendica\Security\OAuth1\OAuthUtil;
use Friendica\Util\DateTimeFormat;
use Friendica\Util\Images;
use Friendica\Util\Network;
+++ /dev/null
-<?php
-// vim: foldmethod=marker
-
-/* Generic exception class
- */
-
-use Friendica\Security\FKOAuthDataStore;
-
-if (!class_exists('OAuthException', false)) {
- class OAuthException extends Exception
- {
- }
-}
-
-class OAuthConsumer
-{
- public $key;
- public $secret;
- public $callback_url;
-
- function __construct($key, $secret, $callback_url = NULL)
- {
- $this->key = $key;
- $this->secret = $secret;
- $this->callback_url = $callback_url;
- }
-
- function __toString()
- {
- return "OAuthConsumer[key=$this->key,secret=$this->secret]";
- }
-}
-
-class OAuthToken
-{
- // access tokens and request tokens
- public $key;
- public $secret;
-
- public $expires;
- public $scope;
- public $uid;
-
- /**
- * key = the token
- * secret = the token secret
- *
- * @param $key
- * @param $secret
- */
- function __construct($key, $secret)
- {
- $this->key = $key;
- $this->secret = $secret;
- }
-
- /**
- * generates the basic string serialization of a token that a server
- * would respond to request_token and access_token calls with
- */
- function to_string()
- {
- return "oauth_token=" .
- OAuthUtil::urlencode_rfc3986($this->key) .
- "&oauth_token_secret=" .
- OAuthUtil::urlencode_rfc3986($this->secret);
- }
-
- function __toString()
- {
- return $this->to_string();
- }
-}
-
-/**
- * A class for implementing a Signature Method
- * See section 9 ("Signing Requests") in the spec
- */
-abstract class OAuthSignatureMethod
-{
- /**
- * Needs to return the name of the Signature Method (ie HMAC-SHA1)
- *
- * @return string
- */
- abstract public function get_name();
-
- /**
- * Build up the signature
- * NOTE: The output of this function MUST NOT be urlencoded.
- * the encoding is handled in OAuthRequest when the final
- * request is serialized
- *
- * @param OAuthRequest $request
- * @param OAuthConsumer $consumer
- * @param OAuthToken $token
- * @return string
- */
- abstract public function build_signature(OAuthRequest $request, OAuthConsumer $consumer, OAuthToken $token = null);
-
- /**
- * Verifies that a given signature is correct
- *
- * @param OAuthRequest $request
- * @param OAuthConsumer $consumer
- * @param OAuthToken $token
- * @param string $signature
- * @return bool
- */
- public function check_signature(OAuthRequest $request, OAuthConsumer $consumer, $signature, OAuthToken $token = null)
- {
- $built = $this->build_signature($request, $consumer, $token);
- return ($built == $signature);
- }
-}
-
-/**
- * The HMAC-SHA1 signature method uses the HMAC-SHA1 signature algorithm as defined in [RFC2104]
- * where the Signature Base String is the text and the key is the concatenated values (each first
- * encoded per Parameter Encoding) of the Consumer Secret and Token Secret, separated by an '&'
- * character (ASCII code 38) even if empty.
- * - Chapter 9.2 ("HMAC-SHA1")
- */
-class OAuthSignatureMethod_HMAC_SHA1 extends OAuthSignatureMethod
-{
- function get_name()
- {
- return "HMAC-SHA1";
- }
-
- /**
- * @param OAuthRequest $request
- * @param OAuthConsumer $consumer
- * @param OAuthToken $token
- * @return string
- */
- public function build_signature(OAuthRequest $request, OAuthConsumer $consumer, OAuthToken $token = null)
- {
- $base_string = $request->get_signature_base_string();
- $request->base_string = $base_string;
-
- $key_parts = array(
- $consumer->secret,
- ($token) ? $token->secret : ""
- );
-
- $key_parts = OAuthUtil::urlencode_rfc3986($key_parts);
- $key = implode('&', $key_parts);
-
-
- $r = base64_encode(hash_hmac('sha1', $base_string, $key, true));
- return $r;
- }
-}
-
-/**
- * The PLAINTEXT method does not provide any security protection and SHOULD only be used
- * over a secure channel such as HTTPS. It does not use the Signature Base String.
- * - Chapter 9.4 ("PLAINTEXT")
- */
-class OAuthSignatureMethod_PLAINTEXT extends OAuthSignatureMethod
-{
- public function get_name()
- {
- return "PLAINTEXT";
- }
-
- /**
- * oauth_signature is set to the concatenated encoded values of the Consumer Secret and
- * Token Secret, separated by a '&' character (ASCII code 38), even if either secret is
- * empty. The result MUST be encoded again.
- * - Chapter 9.4.1 ("Generating Signatures")
- *
- * Please note that the second encoding MUST NOT happen in the SignatureMethod, as
- * OAuthRequest handles this!
- *
- * @param $request
- * @param $consumer
- * @param $token
- * @return string
- */
- public function build_signature(OAuthRequest $request, OAuthConsumer $consumer, OAuthToken $token = null)
- {
- $key_parts = array(
- $consumer->secret,
- ($token) ? $token->secret : ""
- );
-
- $key_parts = OAuthUtil::urlencode_rfc3986($key_parts);
- $key = implode('&', $key_parts);
- $request->base_string = $key;
-
- return $key;
- }
-}
-
-/**
- * The RSA-SHA1 signature method uses the RSASSA-PKCS1-v1_5 signature algorithm as defined in
- * [RFC3447] section 8.2 (more simply known as PKCS#1), using SHA-1 as the hash function for
- * EMSA-PKCS1-v1_5. It is assumed that the Consumer has provided its RSA public key in a
- * verified way to the Service Provider, in a manner which is beyond the scope of this
- * specification.
- * - Chapter 9.3 ("RSA-SHA1")
- */
-abstract class OAuthSignatureMethod_RSA_SHA1 extends OAuthSignatureMethod
-{
- public function get_name()
- {
- return "RSA-SHA1";
- }
-
- // Up to the SP to implement this lookup of keys. Possible ideas are:
- // (1) do a lookup in a table of trusted certs keyed off of consumer
- // (2) fetch via http using a url provided by the requester
- // (3) some sort of specific discovery code based on request
- //
- // Either way should return a string representation of the certificate
- protected abstract function fetch_public_cert(&$request);
-
- // Up to the SP to implement this lookup of keys. Possible ideas are:
- // (1) do a lookup in a table of trusted certs keyed off of consumer
- //
- // Either way should return a string representation of the certificate
- protected abstract function fetch_private_cert(&$request);
-
- public function build_signature(OAuthRequest $request, OAuthConsumer $consumer, OAuthToken $token = null)
- {
- $base_string = $request->get_signature_base_string();
- $request->base_string = $base_string;
-
- // Fetch the private key cert based on the request
- $cert = $this->fetch_private_cert($request);
-
- // Pull the private key ID from the certificate
- $privatekeyid = openssl_get_privatekey($cert);
-
- // Sign using the key
- openssl_sign($base_string, $signature, $privatekeyid);
-
- // Release the key resource
- openssl_free_key($privatekeyid);
-
- return base64_encode($signature);
- }
-
- public function check_signature(OAuthRequest $request, OAuthConsumer $consumer, $signature, OAuthToken $token = null)
- {
- $decoded_sig = base64_decode($signature);
-
- $base_string = $request->get_signature_base_string();
-
- // Fetch the public key cert based on the request
- $cert = $this->fetch_public_cert($request);
-
- // Pull the public key ID from the certificate
- $publickeyid = openssl_get_publickey($cert);
-
- // Check the computed signature against the one passed in the query
- $ok = openssl_verify($base_string, $decoded_sig, $publickeyid);
-
- // Release the key resource
- openssl_free_key($publickeyid);
-
- return $ok == 1;
- }
-}
-
-class OAuthRequest
-{
- private $parameters;
- private $http_method;
- private $http_url;
- // for debug purposes
- public $base_string;
- public static $version = '1.0';
- public static $POST_INPUT = 'php://input';
-
- function __construct($http_method, $http_url, $parameters = NULL)
- {
- @$parameters or $parameters = array();
- $parameters = array_merge(OAuthUtil::parse_parameters(parse_url($http_url, PHP_URL_QUERY)), $parameters);
- $this->parameters = $parameters;
- $this->http_method = $http_method;
- $this->http_url = $http_url;
- }
-
-
- /**
- * attempt to build up a request from what was passed to the server
- *
- * @param string|null $http_method
- * @param string|null $http_url
- * @param string|null $parameters
- * @return OAuthRequest
- */
- public static function from_request($http_method = NULL, $http_url = NULL, $parameters = NULL)
- {
- $scheme = (!isset($_SERVER['HTTPS']) || $_SERVER['HTTPS'] != "on")
- ? 'http'
- : 'https';
- @$http_url or $http_url = $scheme .
- '://' . $_SERVER['HTTP_HOST'] .
- ':' .
- $_SERVER['SERVER_PORT'] .
- $_SERVER['REQUEST_URI'];
- @$http_method or $http_method = $_SERVER['REQUEST_METHOD'];
-
- // We weren't handed any parameters, so let's find the ones relevant to
- // this request.
- // If you run XML-RPC or similar you should use this to provide your own
- // parsed parameter-list
- if (!$parameters) {
- // Find request headers
- $request_headers = OAuthUtil::get_headers();
-
- // Parse the query-string to find GET parameters
- $parameters = OAuthUtil::parse_parameters($_SERVER['QUERY_STRING']);
-
- // It's a POST request of the proper content-type, so parse POST
- // parameters and add those overriding any duplicates from GET
- if (
- $http_method == "POST"
- && @strstr(
- $request_headers["Content-Type"],
- "application/x-www-form-urlencoded"
- )
- ) {
- $post_data = OAuthUtil::parse_parameters(
- file_get_contents(self::$POST_INPUT)
- );
- $parameters = array_merge($parameters, $post_data);
- }
-
- // We have a Authorization-header with OAuth data. Parse the header
- // and add those overriding any duplicates from GET or POST
- if (@substr($request_headers['Authorization'], 0, 6) == "OAuth ") {
- $header_parameters = OAuthUtil::split_header(
- $request_headers['Authorization']
- );
- $parameters = array_merge($parameters, $header_parameters);
- }
- }
- // fix for friendica redirect system
-
- $http_url = substr($http_url, 0, strpos($http_url, $parameters['pagename']) + strlen($parameters['pagename']));
- unset($parameters['pagename']);
-
- return new OAuthRequest($http_method, $http_url, $parameters);
- }
-
- /**
- * pretty much a helper function to set up the request
- *
- * @param OAuthConsumer $consumer
- * @param OAuthToken $token
- * @param string $http_method
- * @param string $http_url
- * @param array|null $parameters
- * @return OAuthRequest
- */
- public static function from_consumer_and_token(OAuthConsumer $consumer, $http_method, $http_url, array $parameters = null, OAuthToken $token = null)
- {
- @$parameters or $parameters = array();
- $defaults = array(
- "oauth_version" => OAuthRequest::$version,
- "oauth_nonce" => OAuthRequest::generate_nonce(),
- "oauth_timestamp" => OAuthRequest::generate_timestamp(),
- "oauth_consumer_key" => $consumer->key
- );
- if ($token)
- $defaults['oauth_token'] = $token->key;
-
- $parameters = array_merge($defaults, $parameters);
-
- return new OAuthRequest($http_method, $http_url, $parameters);
- }
-
- public function set_parameter($name, $value, $allow_duplicates = true)
- {
- if ($allow_duplicates && isset($this->parameters[$name])) {
- // We have already added parameter(s) with this name, so add to the list
- if (is_scalar($this->parameters[$name])) {
- // This is the first duplicate, so transform scalar (string)
- // into an array so we can add the duplicates
- $this->parameters[$name] = array($this->parameters[$name]);
- }
-
- $this->parameters[$name][] = $value;
- } else {
- $this->parameters[$name] = $value;
- }
- }
-
- public function get_parameter($name)
- {
- return isset($this->parameters[$name]) ? $this->parameters[$name] : null;
- }
-
- public function get_parameters()
- {
- return $this->parameters;
- }
-
- public function unset_parameter($name)
- {
- unset($this->parameters[$name]);
- }
-
- /**
- * The request parameters, sorted and concatenated into a normalized string.
- *
- * @return string
- */
- public function get_signable_parameters()
- {
- // Grab all parameters
- $params = $this->parameters;
-
- // Remove oauth_signature if present
- // Ref: Spec: 9.1.1 ("The oauth_signature parameter MUST be excluded.")
- if (isset($params['oauth_signature'])) {
- unset($params['oauth_signature']);
- }
-
- return OAuthUtil::build_http_query($params);
- }
-
- /**
- * Returns the base string of this request
- *
- * The base string defined as the method, the url
- * and the parameters (normalized), each urlencoded
- * and the concated with &.
- */
- public function get_signature_base_string()
- {
- $parts = array(
- $this->get_normalized_http_method(),
- $this->get_normalized_http_url(),
- $this->get_signable_parameters()
- );
-
- $parts = OAuthUtil::urlencode_rfc3986($parts);
-
- return implode('&', $parts);
- }
-
- /**
- * just uppercases the http method
- */
- public function get_normalized_http_method()
- {
- return strtoupper($this->http_method);
- }
-
- /**
- * parses the url and rebuilds it to be
- * scheme://host/path
- */
- public function get_normalized_http_url()
- {
- $parts = parse_url($this->http_url);
-
- $port = @$parts['port'];
- $scheme = $parts['scheme'];
- $host = $parts['host'];
- $path = @$parts['path'];
-
- $port or $port = ($scheme == 'https') ? '443' : '80';
-
- if (($scheme == 'https' && $port != '443')
- || ($scheme == 'http' && $port != '80')
- ) {
- $host = "$host:$port";
- }
- return "$scheme://$host$path";
- }
-
- /**
- * builds a url usable for a GET request
- */
- public function to_url()
- {
- $post_data = $this->to_postdata();
- $out = $this->get_normalized_http_url();
- if ($post_data) {
- $out .= '?' . $post_data;
- }
- return $out;
- }
-
- /**
- * builds the data one would send in a POST request
- *
- * @param bool $raw
- * @return array|string
- */
- public function to_postdata(bool $raw = false)
- {
- if ($raw)
- return $this->parameters;
- else
- return OAuthUtil::build_http_query($this->parameters);
- }
-
- /**
- * builds the Authorization: header
- *
- * @param string|null $realm
- * @return string
- * @throws OAuthException
- */
- public function to_header($realm = null)
- {
- $first = true;
- if ($realm) {
- $out = 'Authorization: OAuth realm="' . OAuthUtil::urlencode_rfc3986($realm) . '"';
- $first = false;
- } else
- $out = 'Authorization: OAuth';
-
- foreach ($this->parameters as $k => $v) {
- if (substr($k, 0, 5) != "oauth") continue;
- if (is_array($v)) {
- throw new OAuthException('Arrays not supported in headers');
- }
- $out .= ($first) ? ' ' : ',';
- $out .= OAuthUtil::urlencode_rfc3986($k) .
- '="' .
- OAuthUtil::urlencode_rfc3986($v) .
- '"';
- $first = false;
- }
- return $out;
- }
-
- public function __toString()
- {
- return $this->to_url();
- }
-
-
- public function sign_request(OAuthSignatureMethod $signature_method, $consumer, $token)
- {
- $this->set_parameter(
- "oauth_signature_method",
- $signature_method->get_name(),
- false
- );
- $signature = $this->build_signature($signature_method, $consumer, $token);
- $this->set_parameter("oauth_signature", $signature, false);
- }
-
- public function build_signature(OAuthSignatureMethod $signature_method, $consumer, $token)
- {
- $signature = $signature_method->build_signature($this, $consumer, $token);
- return $signature;
- }
-
- /**
- * util function: current timestamp
- */
- private static function generate_timestamp()
- {
- return time();
- }
-
- /**
- * util function: current nonce
- */
- private static function generate_nonce()
- {
- return Friendica\Util\Strings::getRandomHex(32);
- }
-}
-
-class OAuthServer
-{
- protected $timestamp_threshold = 300; // in seconds, five minutes
- protected $version = '1.0'; // hi blaine
- /** @var OAuthSignatureMethod[] */
- protected $signature_methods = array();
-
- /** @var FKOAuthDataStore */
- protected $data_store;
-
- function __construct(FKOAuthDataStore $data_store)
- {
- $this->data_store = $data_store;
- }
-
- public function add_signature_method(OAuthSignatureMethod $signature_method)
- {
- $this->signature_methods[$signature_method->get_name()] =
- $signature_method;
- }
-
- // high level functions
-
- /**
- * process a request_token request
- * returns the request token on success
- *
- * @param OAuthRequest $request
- * @return OAuthToken|null
- * @throws OAuthException
- */
- public function fetch_request_token(OAuthRequest $request)
- {
- $this->get_version($request);
-
- $consumer = $this->get_consumer($request);
-
- // no token required for the initial token request
- $token = NULL;
-
- $this->check_signature($request, $consumer, $token);
-
- // Rev A change
- $callback = $request->get_parameter('oauth_callback');
- $new_token = $this->data_store->new_request_token($consumer, $callback);
-
- return $new_token;
- }
-
- /**
- * process an access_token request
- * returns the access token on success
- *
- * @param OAuthRequest $request
- * @return object
- * @throws OAuthException
- */
- public function fetch_access_token(OAuthRequest $request)
- {
- $this->get_version($request);
-
- $consumer = $this->get_consumer($request);
-
- // requires authorized request token
- $token = $this->get_token($request, $consumer, "request");
-
- $this->check_signature($request, $consumer, $token);
-
- // Rev A change
- $verifier = $request->get_parameter('oauth_verifier');
- $new_token = $this->data_store->new_access_token($token, $consumer, $verifier);
-
- return $new_token;
- }
-
- /**
- * verify an api call, checks all the parameters
- *
- * @param OAuthRequest $request
- * @return array
- * @throws OAuthException
- */
- public function verify_request(OAuthRequest $request)
- {
- $this->get_version($request);
- $consumer = $this->get_consumer($request);
- $token = $this->get_token($request, $consumer, "access");
- $this->check_signature($request, $consumer, $token);
- return [$consumer, $token];
- }
-
- // Internals from here
-
- /**
- * version 1
- *
- * @param OAuthRequest $request
- * @return string
- * @throws OAuthException
- */
- private function get_version(OAuthRequest $request)
- {
- $version = $request->get_parameter("oauth_version");
- if (!$version) {
- // Service Providers MUST assume the protocol version to be 1.0 if this parameter is not present.
- // Chapter 7.0 ("Accessing Protected Ressources")
- $version = '1.0';
- }
- if ($version !== $this->version) {
- throw new OAuthException("OAuth version '$version' not supported");
- }
- return $version;
- }
-
- /**
- * figure out the signature with some defaults
- *
- * @param OAuthRequest $request
- * @return OAuthSignatureMethod
- * @throws OAuthException
- */
- private function get_signature_method(OAuthRequest $request)
- {
- $signature_method =
- @$request->get_parameter("oauth_signature_method");
-
- if (!$signature_method) {
- // According to chapter 7 ("Accessing Protected Ressources") the signature-method
- // parameter is required, and we can't just fallback to PLAINTEXT
- throw new OAuthException('No signature method parameter. This parameter is required');
- }
-
- if (!in_array(
- $signature_method,
- array_keys($this->signature_methods)
- )) {
- throw new OAuthException(
- "Signature method '$signature_method' not supported " .
- "try one of the following: " .
- implode(", ", array_keys($this->signature_methods))
- );
- }
- return $this->signature_methods[$signature_method];
- }
-
- /**
- * try to find the consumer for the provided request's consumer key
- *
- * @param OAuthRequest $request
- * @return OAuthConsumer
- * @throws OAuthException
- */
- private function get_consumer(OAuthRequest $request)
- {
- $consumer_key = @$request->get_parameter("oauth_consumer_key");
- if (!$consumer_key) {
- throw new OAuthException("Invalid consumer key");
- }
-
- $consumer = $this->data_store->lookup_consumer($consumer_key);
- if (!$consumer) {
- throw new OAuthException("Invalid consumer");
- }
-
- return $consumer;
- }
-
- /**
- * try to find the token for the provided request's token key
- *
- * @param OAuthRequest $request
- * @param $consumer
- * @param string $token_type
- * @return OAuthToken|null
- * @throws OAuthException
- */
- private function get_token(OAuthRequest &$request, $consumer, $token_type = "access")
- {
- $token_field = @$request->get_parameter('oauth_token');
- $token = $this->data_store->lookup_token(
- $consumer,
- $token_type,
- $token_field
- );
- if (!$token) {
- throw new OAuthException("Invalid $token_type token: $token_field");
- }
- return $token;
- }
-
- /**
- * all-in-one function to check the signature on a request
- * should guess the signature method appropriately
- *
- * @param OAuthRequest $request
- * @param OAuthConsumer $consumer
- * @param OAuthToken|null $token
- * @throws OAuthException
- */
- private function check_signature(OAuthRequest $request, OAuthConsumer $consumer, OAuthToken $token = null)
- {
- // this should probably be in a different method
- $timestamp = @$request->get_parameter('oauth_timestamp');
- $nonce = @$request->get_parameter('oauth_nonce');
-
- $this->check_timestamp($timestamp);
- $this->check_nonce($consumer, $token, $nonce, $timestamp);
-
- $signature_method = $this->get_signature_method($request);
-
- $signature = $request->get_parameter('oauth_signature');
- $valid_sig = $signature_method->check_signature(
- $request,
- $consumer,
- $signature,
- $token
- );
-
- if (!$valid_sig) {
- throw new OAuthException("Invalid signature");
- }
- }
-
- /**
- * check that the timestamp is new enough
- *
- * @param int $timestamp
- * @throws OAuthException
- */
- private function check_timestamp($timestamp)
- {
- if (!$timestamp)
- throw new OAuthException(
- 'Missing timestamp parameter. The parameter is required'
- );
-
- // verify that timestamp is recentish
- $now = time();
- if (abs($now - $timestamp) > $this->timestamp_threshold) {
- throw new OAuthException(
- "Expired timestamp, yours $timestamp, ours $now"
- );
- }
- }
-
- /**
- * check that the nonce is not repeated
- *
- * @param OAuthConsumer $consumer
- * @param OAuthToken $token
- * @param string $nonce
- * @param int $timestamp
- * @throws OAuthException
- */
- private function check_nonce(OAuthConsumer $consumer, OAuthToken $token, $nonce, int $timestamp)
- {
- if (!$nonce)
- throw new OAuthException(
- 'Missing nonce parameter. The parameter is required'
- );
-
- // verify that the nonce is uniqueish
- $found = $this->data_store->lookup_nonce(
- $consumer,
- $token,
- $nonce,
- $timestamp
- );
- if ($found) {
- throw new OAuthException("Nonce already used: $nonce");
- }
- }
-}
-
-class OAuthDataStore
-{
- function lookup_consumer($consumer_key)
- {
- // implement me
- }
-
- function lookup_token(OAuthConsumer $consumer, $token_type, $token_id)
- {
- // implement me
- }
-
- function lookup_nonce(OAuthConsumer $consumer, OAuthToken $token, $nonce, int $timestamp)
- {
- // implement me
- }
-
- function new_request_token(OAuthConsumer $consumer, $callback = null)
- {
- // return a new token attached to this consumer
- }
-
- function new_access_token(OAuthToken $token, OAuthConsumer $consumer, $verifier = null)
- {
- // return a new access token attached to this consumer
- // for the user associated with this token if the request token
- // is authorized
- // should also invalidate the request token
- }
-}
-
-class OAuthUtil
-{
- public static function urlencode_rfc3986($input)
- {
- if (is_array($input)) {
- return array_map(['OAuthUtil', 'urlencode_rfc3986'], $input);
- } else if (is_scalar($input)) {
- return str_replace(
- '+',
- ' ',
- str_replace('%7E', '~', rawurlencode($input))
- );
- } else {
- return '';
- }
- }
-
-
- // This decode function isn't taking into consideration the above
- // modifications to the encoding process. However, this method doesn't
- // seem to be used anywhere so leaving it as is.
- public static function urldecode_rfc3986($string)
- {
- return urldecode($string);
- }
-
- // Utility function for turning the Authorization: header into
- // parameters, has to do some unescaping
- // Can filter out any non-oauth parameters if needed (default behaviour)
- public static function split_header($header, $only_allow_oauth_parameters = true)
- {
- $pattern = '/(([-_a-z]*)=("([^"]*)"|([^,]*)),?)/';
- $offset = 0;
- $params = [];
- while (preg_match($pattern, $header, $matches, PREG_OFFSET_CAPTURE, $offset) > 0) {
- $match = $matches[0];
- $header_name = $matches[2][0];
- $header_content = (isset($matches[5])) ? $matches[5][0] : $matches[4][0];
- if (preg_match('/^oauth_/', $header_name) || !$only_allow_oauth_parameters) {
- $params[$header_name] = OAuthUtil::urldecode_rfc3986($header_content);
- }
- $offset = $match[1] + strlen($match[0]);
- }
-
- if (isset($params['realm'])) {
- unset($params['realm']);
- }
-
- return $params;
- }
-
- // helper to try to sort out headers for people who aren't running apache
- public static function get_headers()
- {
- if (function_exists('apache_request_headers')) {
- // we need this to get the actual Authorization: header
- // because apache tends to tell us it doesn't exist
- $headers = apache_request_headers();
-
- // sanitize the output of apache_request_headers because
- // we always want the keys to be Cased-Like-This and arh()
- // returns the headers in the same case as they are in the
- // request
- $out = [];
- foreach ($headers as $key => $value) {
- $key = str_replace(
- " ",
- "-",
- ucwords(strtolower(str_replace("-", " ", $key)))
- );
- $out[$key] = $value;
- }
- } else {
- // otherwise we don't have apache and are just going to have to hope
- // that $_SERVER actually contains what we need
- $out = [];
- if (isset($_SERVER['CONTENT_TYPE']))
- $out['Content-Type'] = $_SERVER['CONTENT_TYPE'];
- if (isset($_ENV['CONTENT_TYPE']))
- $out['Content-Type'] = $_ENV['CONTENT_TYPE'];
-
- foreach ($_SERVER as $key => $value) {
- if (substr($key, 0, 5) == "HTTP_") {
- // this is chaos, basically it is just there to capitalize the first
- // letter of every word that is not an initial HTTP and strip HTTP
- // code from przemek
- $key = str_replace(
- " ",
- "-",
- ucwords(strtolower(str_replace("_", " ", substr($key, 5))))
- );
- $out[$key] = $value;
- }
- }
- }
- return $out;
- }
-
- // This function takes a input like a=b&a=c&d=e and returns the parsed
- // parameters like this
- // array('a' => array('b','c'), 'd' => 'e')
- public static function parse_parameters($input)
- {
- if (!isset($input) || !$input) return array();
-
- $pairs = explode('&', $input);
-
- $parsed_parameters = [];
- foreach ($pairs as $pair) {
- $split = explode('=', $pair, 2);
- $parameter = OAuthUtil::urldecode_rfc3986($split[0]);
- $value = isset($split[1]) ? OAuthUtil::urldecode_rfc3986($split[1]) : '';
-
- if (isset($parsed_parameters[$parameter])) {
- // We have already recieved parameter(s) with this name, so add to the list
- // of parameters with this name
-
- if (is_scalar($parsed_parameters[$parameter])) {
- // This is the first duplicate, so transform scalar (string) into an array
- // so we can add the duplicates
- $parsed_parameters[$parameter] = [$parsed_parameters[$parameter]];
- }
-
- $parsed_parameters[$parameter][] = $value;
- } else {
- $parsed_parameters[$parameter] = $value;
- }
- }
- return $parsed_parameters;
- }
-
- public static function build_http_query($params)
- {
- if (!$params) return '';
-
- // Urlencode both keys and values
- $keys = OAuthUtil::urlencode_rfc3986(array_keys($params));
- $values = OAuthUtil::urlencode_rfc3986(array_values($params));
- $params = array_combine($keys, $values);
-
- // Parameters are sorted by name, using lexicographical byte value ordering.
- // Ref: Spec: 9.1.1 (1)
- uksort($params, 'strcmp');
-
- $pairs = [];
- foreach ($params as $parameter => $value) {
- if (is_array($value)) {
- // If two or more parameters share the same name, they are sorted by their value
- // Ref: Spec: 9.1.1 (1)
- natsort($value);
- foreach ($value as $duplicate_value) {
- $pairs[] = $parameter . '=' . $duplicate_value;
- }
- } else {
- $pairs[] = $parameter . '=' . $value;
- }
- }
- // For each parameter, the name is separated from the corresponding value by an '=' character (ASCII code 61)
- // Each name-value pair is separated by an '&' character (ASCII code 38)
- return implode('&', $pairs);
- }
-}
use Friendica\Database\DBA;
use Friendica\DI;
use Friendica\Module\Security\Login;
+use Friendica\Security\OAuth1\OAuthRequest;
+use Friendica\Security\OAuth1\OAuthUtil;
require_once __DIR__ . '/../include/api.php';
*
*/
-namespace Friendica\Network;
+namespace Friendica\Security;
use Friendica\Core\Logger;
use Friendica\Database\DBA;
use Friendica\DI;
-use Friendica\Security\FKOAuthDataStore;
-use OAuthServer;
-use OAuthSignatureMethod_HMAC_SHA1;
-use OAuthSignatureMethod_PLAINTEXT;
+use Friendica\Security\OAuth1\OAuthServer;
+use Friendica\Security\OAuth1\OAuthSignatureMethod_HMAC_SHA1;
+use Friendica\Security\OAuth1\OAuthSignatureMethod_PLAINTEXT;
/**
* OAuth protocol
use Friendica\Database\DBA;
use Friendica\DI;
use Friendica\Util\Strings;
-use OAuthConsumer;
-use OAuthDataStore;
-use OAuthToken;
+use Friendica\Security\OAuth1\OAuthConsumer;
+use Friendica\Security\OAuth1\OAuthDataStore;
+use Friendica\Security\OAuth1\OAuthToken;
define('REQUEST_TOKEN_DURATION', 300);
define('ACCESS_TOKEN_DURATION', 31536000);
/**
- * OAuthDataStore class
+ * Friendica\Security\OAuth1\OAuthDataStore class
*/
class FKOAuthDataStore extends OAuthDataStore
{
--- /dev/null
+<?php
+
+namespace Friendica\Security\OAuth1;
+
+class OAuthConsumer
+{
+ public $key;
+ public $secret;
+ public $callback_url;
+
+ function __construct($key, $secret, $callback_url = null)
+ {
+ $this->key = $key;
+ $this->secret = $secret;
+ $this->callback_url = $callback_url;
+ }
+
+ function __toString()
+ {
+ return "OAuthConsumer[key=$this->key,secret=$this->secret]";
+ }
+}
--- /dev/null
+<?php
+
+namespace Friendica\Security\OAuth1;
+
+class OAuthDataStore
+{
+ function lookup_consumer($consumer_key)
+ {
+ // implement me
+ }
+
+ function lookup_token(OAuthConsumer $consumer, $token_type, $token_id)
+ {
+ // implement me
+ }
+
+ function lookup_nonce(OAuthConsumer $consumer, OAuthToken $token, $nonce, int $timestamp)
+ {
+ // implement me
+ }
+
+ function new_request_token(OAuthConsumer $consumer, $callback = null)
+ {
+ // return a new token attached to this consumer
+ }
+
+ function new_access_token(OAuthToken $token, OAuthConsumer $consumer, $verifier = null)
+ {
+ // return a new access token attached to this consumer
+ // for the user associated with this token if the request token
+ // is authorized
+ // should also invalidate the request token
+ }
+}
--- /dev/null
+<?php
+
+namespace Friendica\Security\OAuth1;
+
+use Exception;
+
+class OAuthException extends Exception
+{
+}
--- /dev/null
+<?php
+
+namespace Friendica\Security\OAuth1;
+
+use Friendica;
+use Friendica\Security\OAuth1\OAuthUtil;
+
+class OAuthRequest
+{
+ private $parameters;
+ private $http_method;
+ private $http_url;
+ // for debug purposes
+ public $base_string;
+ public static $version = '1.0';
+ public static $POST_INPUT = 'php://input';
+
+ function __construct($http_method, $http_url, $parameters = null)
+ {
+ @$parameters or $parameters = [];
+ $parameters = array_merge(OAuthUtil::parse_parameters(parse_url($http_url, PHP_URL_QUERY)), $parameters);
+ $this->parameters = $parameters;
+ $this->http_method = $http_method;
+ $this->http_url = $http_url;
+ }
+
+
+ /**
+ * attempt to build up a request from what was passed to the server
+ *
+ * @param string|null $http_method
+ * @param string|null $http_url
+ * @param string|null $parameters
+ *
+ * @return OAuthRequest
+ */
+ public static function from_request($http_method = null, $http_url = null, $parameters = null)
+ {
+ $scheme = (!isset($_SERVER['HTTPS']) || $_SERVER['HTTPS'] != "on")
+ ? 'http'
+ : 'https';
+ @$http_url or $http_url = $scheme .
+ '://' . $_SERVER['HTTP_HOST'] .
+ ':' .
+ $_SERVER['SERVER_PORT'] .
+ $_SERVER['REQUEST_URI'];
+ @$http_method or $http_method = $_SERVER['REQUEST_METHOD'];
+
+ // We weren't handed any parameters, so let's find the ones relevant to
+ // this request.
+ // If you run XML-RPC or similar you should use this to provide your own
+ // parsed parameter-list
+ if (!$parameters) {
+ // Find request headers
+ $request_headers = OAuthUtil::get_headers();
+
+ // Parse the query-string to find GET parameters
+ $parameters = OAuthUtil::parse_parameters($_SERVER['QUERY_STRING']);
+
+ // It's a POST request of the proper content-type, so parse POST
+ // parameters and add those overriding any duplicates from GET
+ if (
+ $http_method == "POST"
+ && @strstr(
+ $request_headers["Content-Type"],
+ "application/x-www-form-urlencoded"
+ )
+ ) {
+ $post_data = OAuthUtil::parse_parameters(
+ file_get_contents(self::$POST_INPUT)
+ );
+ $parameters = array_merge($parameters, $post_data);
+ }
+
+ // We have a Authorization-header with OAuth data. Parse the header
+ // and add those overriding any duplicates from GET or POST
+ if (@substr($request_headers['Authorization'], 0, 6) == "OAuth ") {
+ $header_parameters = OAuthUtil::split_header(
+ $request_headers['Authorization']
+ );
+ $parameters = array_merge($parameters, $header_parameters);
+ }
+ }
+ // fix for friendica redirect system
+
+ $http_url = substr($http_url, 0, strpos($http_url, $parameters['pagename']) + strlen($parameters['pagename']));
+ unset($parameters['pagename']);
+
+ return new OAuthRequest($http_method, $http_url, $parameters);
+ }
+
+ /**
+ * pretty much a helper function to set up the request
+ *
+ * @param \Friendica\Security\OAuth1\OAuthConsumer $consumer
+ * @param \Friendica\Security\OAuth1\OAuthToken $token
+ * @param string $http_method
+ * @param string $http_url
+ * @param array|null $parameters
+ *
+ * @return OAuthRequest
+ */
+ public static function from_consumer_and_token(\Friendica\Security\OAuth1\OAuthConsumer $consumer, $http_method, $http_url, array $parameters = null, \Friendica\Security\OAuth1\OAuthToken $token = null)
+ {
+ @$parameters or $parameters = [];
+ $defaults = [
+ "oauth_version" => OAuthRequest::$version,
+ "oauth_nonce" => OAuthRequest::generate_nonce(),
+ "oauth_timestamp" => OAuthRequest::generate_timestamp(),
+ "oauth_consumer_key" => $consumer->key,
+ ];
+ if ($token)
+ $defaults['oauth_token'] = $token->key;
+
+ $parameters = array_merge($defaults, $parameters);
+
+ return new OAuthRequest($http_method, $http_url, $parameters);
+ }
+
+ public function set_parameter($name, $value, $allow_duplicates = true)
+ {
+ if ($allow_duplicates && isset($this->parameters[$name])) {
+ // We have already added parameter(s) with this name, so add to the list
+ if (is_scalar($this->parameters[$name])) {
+ // This is the first duplicate, so transform scalar (string)
+ // into an array so we can add the duplicates
+ $this->parameters[$name] = [$this->parameters[$name]];
+ }
+
+ $this->parameters[$name][] = $value;
+ } else {
+ $this->parameters[$name] = $value;
+ }
+ }
+
+ public function get_parameter($name)
+ {
+ return isset($this->parameters[$name]) ? $this->parameters[$name] : null;
+ }
+
+ public function get_parameters()
+ {
+ return $this->parameters;
+ }
+
+ public function unset_parameter($name)
+ {
+ unset($this->parameters[$name]);
+ }
+
+ /**
+ * The request parameters, sorted and concatenated into a normalized string.
+ *
+ * @return string
+ */
+ public function get_signable_parameters()
+ {
+ // Grab all parameters
+ $params = $this->parameters;
+
+ // Remove oauth_signature if present
+ // Ref: Spec: 9.1.1 ("The oauth_signature parameter MUST be excluded.")
+ if (isset($params['oauth_signature'])) {
+ unset($params['oauth_signature']);
+ }
+
+ return OAuthUtil::build_http_query($params);
+ }
+
+ /**
+ * Returns the base string of this request
+ *
+ * The base string defined as the method, the url
+ * and the parameters (normalized), each urlencoded
+ * and the concated with &.
+ */
+ public function get_signature_base_string()
+ {
+ $parts = [
+ $this->get_normalized_http_method(),
+ $this->get_normalized_http_url(),
+ $this->get_signable_parameters(),
+ ];
+
+ $parts = OAuthUtil::urlencode_rfc3986($parts);
+
+ return implode('&', $parts);
+ }
+
+ /**
+ * just uppercases the http method
+ */
+ public function get_normalized_http_method()
+ {
+ return strtoupper($this->http_method);
+ }
+
+ /**
+ * parses the url and rebuilds it to be
+ * scheme://host/path
+ */
+ public function get_normalized_http_url()
+ {
+ $parts = parse_url($this->http_url);
+
+ $port = @$parts['port'];
+ $scheme = $parts['scheme'];
+ $host = $parts['host'];
+ $path = @$parts['path'];
+
+ $port or $port = ($scheme == 'https') ? '443' : '80';
+
+ if (($scheme == 'https' && $port != '443')
+ || ($scheme == 'http' && $port != '80')
+ ) {
+ $host = "$host:$port";
+ }
+ return "$scheme://$host$path";
+ }
+
+ /**
+ * builds a url usable for a GET request
+ */
+ public function to_url()
+ {
+ $post_data = $this->to_postdata();
+ $out = $this->get_normalized_http_url();
+ if ($post_data) {
+ $out .= '?' . $post_data;
+ }
+ return $out;
+ }
+
+ /**
+ * builds the data one would send in a POST request
+ *
+ * @param bool $raw
+ *
+ * @return array|string
+ */
+ public function to_postdata(bool $raw = false)
+ {
+ if ($raw)
+ return $this->parameters;
+ else
+ return OAuthUtil::build_http_query($this->parameters);
+ }
+
+ /**
+ * builds the Authorization: header
+ *
+ * @param string|null $realm
+ *
+ * @return string
+ * @throws \Friendica\Security\OAuth1\OAuthException
+ */
+ public function to_header($realm = null)
+ {
+ $first = true;
+ if ($realm) {
+ $out = 'Authorization: OAuth realm="' . OAuthUtil::urlencode_rfc3986($realm) . '"';
+ $first = false;
+ } else
+ $out = 'Authorization: OAuth';
+
+ foreach ($this->parameters as $k => $v) {
+ if (substr($k, 0, 5) != "oauth") continue;
+ if (is_array($v)) {
+ throw new \Friendica\Security\OAuth1\OAuthException('Arrays not supported in headers');
+ }
+ $out .= ($first) ? ' ' : ',';
+ $out .= OAuthUtil::urlencode_rfc3986($k) .
+ '="' .
+ OAuthUtil::urlencode_rfc3986($v) .
+ '"';
+ $first = false;
+ }
+ return $out;
+ }
+
+ public function __toString()
+ {
+ return $this->to_url();
+ }
+
+
+ public function sign_request(\Friendica\Security\OAuth1\OAuthSignatureMethod $signature_method, $consumer, $token)
+ {
+ $this->set_parameter(
+ "oauth_signature_method",
+ $signature_method->get_name(),
+ false
+ );
+ $signature = $this->build_signature($signature_method, $consumer, $token);
+ $this->set_parameter("oauth_signature", $signature, false);
+ }
+
+ public function build_signature(\Friendica\Security\OAuth1\OAuthSignatureMethod $signature_method, $consumer, $token)
+ {
+ $signature = $signature_method->build_signature($this, $consumer, $token);
+ return $signature;
+ }
+
+ /**
+ * util function: current timestamp
+ */
+ private static function generate_timestamp()
+ {
+ return time();
+ }
+
+ /**
+ * util function: current nonce
+ */
+ private static function generate_nonce()
+ {
+ return Friendica\Util\Strings::getRandomHex(32);
+ }
+}
\ No newline at end of file
--- /dev/null
+<?php
+
+namespace Friendica\Security\OAuth1;
+
+use Friendica\Security\FKOAuthDataStore;
+use OAuthConsumer;
+use OAuthRequest;
+use OAuthSignatureMethod;
+use OAuthToken;
+
+class OAuthServer
+{
+ protected $timestamp_threshold = 300; // in seconds, five minutes
+ protected $version = '1.0'; // hi blaine
+ /** @var \Friendica\Security\OAuth1\OAuthSignatureMethod[] */
+ protected $signature_methods = [];
+
+ /** @var FKOAuthDataStore */
+ protected $data_store;
+
+ function __construct(FKOAuthDataStore $data_store)
+ {
+ $this->data_store = $data_store;
+ }
+
+ public function add_signature_method(\Friendica\Security\OAuth1\OAuthSignatureMethod $signature_method)
+ {
+ $this->signature_methods[$signature_method->get_name()] =
+ $signature_method;
+ }
+
+ // high level functions
+
+ /**
+ * process a request_token request
+ * returns the request token on success
+ *
+ * @param \Friendica\Security\OAuth1\OAuthRequest $request
+ *
+ * @return \Friendica\Security\OAuth1\OAuthToken|null
+ * @throws OAuthException
+ */
+ public function fetch_request_token(\Friendica\Security\OAuth1\OAuthRequest $request)
+ {
+ $this->get_version($request);
+
+ $consumer = $this->get_consumer($request);
+
+ // no token required for the initial token request
+ $token = null;
+
+ $this->check_signature($request, $consumer, $token);
+
+ // Rev A change
+ $callback = $request->get_parameter('oauth_callback');
+ $new_token = $this->data_store->new_request_token($consumer, $callback);
+
+ return $new_token;
+ }
+
+ /**
+ * process an access_token request
+ * returns the access token on success
+ *
+ * @param \Friendica\Security\OAuth1\OAuthRequest $request
+ *
+ * @return object
+ * @throws OAuthException
+ */
+ public function fetch_access_token(\Friendica\Security\OAuth1\OAuthRequest $request)
+ {
+ $this->get_version($request);
+
+ $consumer = $this->get_consumer($request);
+
+ // requires authorized request token
+ $token = $this->get_token($request, $consumer, "request");
+
+ $this->check_signature($request, $consumer, $token);
+
+ // Rev A change
+ $verifier = $request->get_parameter('oauth_verifier');
+ $new_token = $this->data_store->new_access_token($token, $consumer, $verifier);
+
+ return $new_token;
+ }
+
+ /**
+ * verify an api call, checks all the parameters
+ *
+ * @param \Friendica\Security\OAuth1\OAuthRequest $request
+ *
+ * @return array
+ * @throws OAuthException
+ */
+ public function verify_request(\Friendica\Security\OAuth1\OAuthRequest $request)
+ {
+ $this->get_version($request);
+ $consumer = $this->get_consumer($request);
+ $token = $this->get_token($request, $consumer, "access");
+ $this->check_signature($request, $consumer, $token);
+ return [$consumer, $token];
+ }
+
+ // Internals from here
+
+ /**
+ * version 1
+ *
+ * @param \Friendica\Security\OAuth1\OAuthRequest $request
+ *
+ * @return string
+ * @throws OAuthException
+ */
+ private function get_version(\Friendica\Security\OAuth1\OAuthRequest $request)
+ {
+ $version = $request->get_parameter("oauth_version");
+ if (!$version) {
+ // Service Providers MUST assume the protocol version to be 1.0 if this parameter is not present.
+ // Chapter 7.0 ("Accessing Protected Ressources")
+ $version = '1.0';
+ }
+ if ($version !== $this->version) {
+ throw new OAuthException("OAuth version '$version' not supported");
+ }
+ return $version;
+ }
+
+ /**
+ * figure out the signature with some defaults
+ *
+ * @param \Friendica\Security\OAuth1\OAuthRequest $request
+ *
+ * @return \Friendica\Security\OAuth1\OAuthSignatureMethod
+ * @throws OAuthException
+ */
+ private function get_signature_method(\Friendica\Security\OAuth1\OAuthRequest $request)
+ {
+ $signature_method =
+ @$request->get_parameter("oauth_signature_method");
+
+ if (!$signature_method) {
+ // According to chapter 7 ("Accessing Protected Ressources") the signature-method
+ // parameter is required, and we can't just fallback to PLAINTEXT
+ throw new OAuthException('No signature method parameter. This parameter is required');
+ }
+
+ if (!in_array(
+ $signature_method,
+ array_keys($this->signature_methods)
+ )) {
+ throw new OAuthException(
+ "Signature method '$signature_method' not supported " .
+ "try one of the following: " .
+ implode(", ", array_keys($this->signature_methods))
+ );
+ }
+ return $this->signature_methods[$signature_method];
+ }
+
+ /**
+ * try to find the consumer for the provided request's consumer key
+ *
+ * @param \Friendica\Security\OAuth1\OAuthRequest $request
+ *
+ * @return \Friendica\Security\OAuth1\OAuthConsumer
+ * @throws OAuthException
+ */
+ private function get_consumer(\Friendica\Security\OAuth1\OAuthRequest $request)
+ {
+ $consumer_key = @$request->get_parameter("oauth_consumer_key");
+ if (!$consumer_key) {
+ throw new OAuthException("Invalid consumer key");
+ }
+
+ $consumer = $this->data_store->lookup_consumer($consumer_key);
+ if (!$consumer) {
+ throw new OAuthException("Invalid consumer");
+ }
+
+ return $consumer;
+ }
+
+ /**
+ * try to find the token for the provided request's token key
+ *
+ * @param \Friendica\Security\OAuth1\OAuthRequest $request
+ * @param $consumer
+ * @param string $token_type
+ *
+ * @return \Friendica\Security\OAuth1\OAuthToken|null
+ * @throws OAuthException
+ */
+ private function get_token(\Friendica\Security\OAuth1\OAuthRequest &$request, $consumer, $token_type = "access")
+ {
+ $token_field = @$request->get_parameter('oauth_token');
+ $token = $this->data_store->lookup_token(
+ $consumer,
+ $token_type,
+ $token_field
+ );
+ if (!$token) {
+ throw new OAuthException("Invalid $token_type token: $token_field");
+ }
+ return $token;
+ }
+
+ /**
+ * all-in-one function to check the signature on a request
+ * should guess the signature method appropriately
+ *
+ * @param \Friendica\Security\OAuth1\OAuthRequest $request
+ * @param \Friendica\Security\OAuth1\OAuthConsumer $consumer
+ * @param \Friendica\Security\OAuth1\OAuthToken|null $token
+ *
+ * @throws OAuthException
+ */
+ private function check_signature(\Friendica\Security\OAuth1\OAuthRequest $request, \Friendica\Security\OAuth1\OAuthConsumer $consumer, \Friendica\Security\OAuth1\OAuthToken $token = null)
+ {
+ // this should probably be in a different method
+ $timestamp = @$request->get_parameter('oauth_timestamp');
+ $nonce = @$request->get_parameter('oauth_nonce');
+
+ $this->check_timestamp($timestamp);
+ $this->check_nonce($consumer, $token, $nonce, $timestamp);
+
+ $signature_method = $this->get_signature_method($request);
+
+ $signature = $request->get_parameter('oauth_signature');
+ $valid_sig = $signature_method->check_signature(
+ $request,
+ $consumer,
+ $signature,
+ $token
+ );
+
+ if (!$valid_sig) {
+ throw new OAuthException("Invalid signature");
+ }
+ }
+
+ /**
+ * check that the timestamp is new enough
+ *
+ * @param int $timestamp
+ *
+ * @throws OAuthException
+ */
+ private function check_timestamp($timestamp)
+ {
+ if (!$timestamp)
+ throw new OAuthException(
+ 'Missing timestamp parameter. The parameter is required'
+ );
+
+ // verify that timestamp is recentish
+ $now = time();
+ if (abs($now - $timestamp) > $this->timestamp_threshold) {
+ throw new OAuthException(
+ "Expired timestamp, yours $timestamp, ours $now"
+ );
+ }
+ }
+
+ /**
+ * check that the nonce is not repeated
+ *
+ * @param \Friendica\Security\OAuth1\OAuthConsumer $consumer
+ * @param \Friendica\Security\OAuth1\OAuthToken $token
+ * @param string $nonce
+ * @param int $timestamp
+ *
+ * @throws OAuthException
+ */
+ private function check_nonce(\Friendica\Security\OAuth1\OAuthConsumer $consumer, \Friendica\Security\OAuth1\OAuthToken $token, $nonce, int $timestamp)
+ {
+ if (!$nonce)
+ throw new OAuthException(
+ 'Missing nonce parameter. The parameter is required'
+ );
+
+ // verify that the nonce is uniqueish
+ $found = $this->data_store->lookup_nonce(
+ $consumer,
+ $token,
+ $nonce,
+ $timestamp
+ );
+ if ($found) {
+ throw new OAuthException("Nonce already used: $nonce");
+ }
+ }
+}
--- /dev/null
+<?php
+
+namespace Friendica\Security\OAuth1;
+
+use Friendica\Security\OAuth1\OAuthRequest;
+
+/**
+ * A class for implementing a Signature Method
+ * See section 9 ("Signing Requests") in the spec
+ */
+abstract class OAuthSignatureMethod
+{
+ /**
+ * Needs to return the name of the Signature Method (ie HMAC-SHA1)
+ *
+ * @return string
+ */
+ abstract public function get_name();
+
+ /**
+ * Build up the signature
+ * NOTE: The output of this function MUST NOT be urlencoded.
+ * the encoding is handled in OAuthRequest when the final
+ * request is serialized
+ *
+ * @param OAuthRequest $request
+ * @param \Friendica\Security\OAuth1\OAuthConsumer $consumer
+ * @param \Friendica\Security\OAuth1\OAuthToken $token
+ *
+ * @return string
+ */
+ abstract public function build_signature(OAuthRequest $request, \Friendica\Security\OAuth1\OAuthConsumer $consumer, \Friendica\Security\OAuth1\OAuthToken $token = null);
+
+ /**
+ * Verifies that a given signature is correct
+ *
+ * @param OAuthRequest $request
+ * @param \Friendica\Security\OAuth1\OAuthConsumer $consumer
+ * @param \Friendica\Security\OAuth1\OAuthToken $token
+ * @param string $signature
+ *
+ * @return bool
+ */
+ public function check_signature(OAuthRequest $request, \Friendica\Security\OAuth1\OAuthConsumer $consumer, $signature, \Friendica\Security\OAuth1\OAuthToken $token = null)
+ {
+ $built = $this->build_signature($request, $consumer, $token);
+ return ($built == $signature);
+ }
+}
--- /dev/null
+<?php
+
+namespace Friendica\Security\OAuth1;
+
+use Friendica\Security\OAuth1\OAuthRequest;
+use Friendica\Security\OAuth1\OAuthUtil;
+
+/**
+ * The HMAC-SHA1 signature method uses the HMAC-SHA1 signature algorithm as defined in [RFC2104]
+ * where the Signature Base String is the text and the key is the concatenated values (each first
+ * encoded per Parameter Encoding) of the Consumer Secret and Token Secret, separated by an '&'
+ * character (ASCII code 38) even if empty.
+ * - Chapter 9.2 ("HMAC-SHA1")
+ */
+class OAuthSignatureMethod_HMAC_SHA1 extends \Friendica\Security\OAuth1\OAuthSignatureMethod
+{
+ function get_name()
+ {
+ return "HMAC-SHA1";
+ }
+
+ /**
+ * @param OAuthRequest $request
+ * @param \Friendica\Security\OAuth1\OAuthConsumer $consumer
+ * @param \Friendica\Security\OAuth1\OAuthToken $token
+ *
+ * @return string
+ */
+ public function build_signature(OAuthRequest $request, \Friendica\Security\OAuth1\OAuthConsumer $consumer, \Friendica\Security\OAuth1\OAuthToken $token = null)
+ {
+ $base_string = $request->get_signature_base_string();
+ $request->base_string = $base_string;
+
+ $key_parts = [
+ $consumer->secret,
+ ($token) ? $token->secret : "",
+ ];
+
+ $key_parts = OAuthUtil::urlencode_rfc3986($key_parts);
+ $key = implode('&', $key_parts);
+
+
+ $r = base64_encode(hash_hmac('sha1', $base_string, $key, true));
+ return $r;
+ }
+}
--- /dev/null
+<?php
+
+namespace Friendica\Security\OAuth1;
+
+use Friendica\Security\OAuth1\OAuthRequest;
+use Friendica\Security\OAuth1\OAuthUtil;
+
+/**
+ * The PLAINTEXT method does not provide any security protection and SHOULD only be used
+ * over a secure channel such as HTTPS. It does not use the Signature Base String.
+ * - Chapter 9.4 ("PLAINTEXT")
+ */
+class OAuthSignatureMethod_PLAINTEXT extends OAuthSignatureMethod
+{
+ public function get_name()
+ {
+ return "PLAINTEXT";
+ }
+
+ /**
+ * oauth_signature is set to the concatenated encoded values of the Consumer Secret and
+ * Token Secret, separated by a '&' character (ASCII code 38), even if either secret is
+ * empty. The result MUST be encoded again.
+ * - Chapter 9.4.1 ("Generating Signatures")
+ *
+ * Please note that the second encoding MUST NOT happen in the SignatureMethod, as
+ * OAuthRequest handles this!
+ *
+ * @param $request
+ * @param $consumer
+ * @param $token
+ *
+ * @return string
+ */
+ public function build_signature(OAuthRequest $request, \Friendica\Security\OAuth1\OAuthConsumer $consumer, \Friendica\Security\OAuth1\OAuthToken $token = null)
+ {
+ $key_parts = [
+ $consumer->secret,
+ ($token) ? $token->secret : "",
+ ];
+
+ $key_parts = OAuthUtil::urlencode_rfc3986($key_parts);
+ $key = implode('&', $key_parts);
+ $request->base_string = $key;
+
+ return $key;
+ }
+}
--- /dev/null
+<?php
+
+namespace Friendica\Security\OAuth1;
+
+use Friendica\Security\OAuth1\OAuthRequest;
+
+/**
+ * The RSA-SHA1 signature method uses the RSASSA-PKCS1-v1_5 signature algorithm as defined in
+ * [RFC3447] section 8.2 (more simply known as PKCS#1), using SHA-1 as the hash function for
+ * EMSA-PKCS1-v1_5. It is assumed that the Consumer has provided its RSA public key in a
+ * verified way to the Service Provider, in a manner which is beyond the scope of this
+ * specification.
+ * - Chapter 9.3 ("RSA-SHA1")
+ */
+abstract class OAuthSignatureMethod_RSA_SHA1 extends OAuthSignatureMethod
+{
+ public function get_name()
+ {
+ return "RSA-SHA1";
+ }
+
+ // Up to the SP to implement this lookup of keys. Possible ideas are:
+ // (1) do a lookup in a table of trusted certs keyed off of consumer
+ // (2) fetch via http using a url provided by the requester
+ // (3) some sort of specific discovery code based on request
+ //
+ // Either way should return a string representation of the certificate
+ protected abstract function fetch_public_cert(&$request);
+
+ // Up to the SP to implement this lookup of keys. Possible ideas are:
+ // (1) do a lookup in a table of trusted certs keyed off of consumer
+ //
+ // Either way should return a string representation of the certificate
+ protected abstract function fetch_private_cert(&$request);
+
+ public function build_signature(OAuthRequest $request, \Friendica\Security\OAuth1\OAuthConsumer $consumer, \Friendica\Security\OAuth1\OAuthToken $token = null)
+ {
+ $base_string = $request->get_signature_base_string();
+ $request->base_string = $base_string;
+
+ // Fetch the private key cert based on the request
+ $cert = $this->fetch_private_cert($request);
+
+ // Pull the private key ID from the certificate
+ $privatekeyid = openssl_get_privatekey($cert);
+
+ // Sign using the key
+ openssl_sign($base_string, $signature, $privatekeyid);
+
+ // Release the key resource
+ openssl_free_key($privatekeyid);
+
+ return base64_encode($signature);
+ }
+
+ public function check_signature(OAuthRequest $request, \Friendica\Security\OAuth1\OAuthConsumer $consumer, $signature, \Friendica\Security\OAuth1\OAuthToken $token = null)
+ {
+ $decoded_sig = base64_decode($signature);
+
+ $base_string = $request->get_signature_base_string();
+
+ // Fetch the public key cert based on the request
+ $cert = $this->fetch_public_cert($request);
+
+ // Pull the public key ID from the certificate
+ $publickeyid = openssl_get_publickey($cert);
+
+ // Check the computed signature against the one passed in the query
+ $ok = openssl_verify($base_string, $decoded_sig, $publickeyid);
+
+ // Release the key resource
+ openssl_free_key($publickeyid);
+
+ return $ok == 1;
+ }
+}
--- /dev/null
+<?php
+
+namespace Friendica\Security\OAuth1;
+
+use Friendica\Security\OAuth1\OAuthUtil;
+
+class OAuthToken
+{
+ // access tokens and request tokens
+ public $key;
+ public $secret;
+
+ public $expires;
+ public $scope;
+ public $uid;
+
+ /**
+ * key = the token
+ * secret = the token secret
+ *
+ * @param $key
+ * @param $secret
+ */
+ function __construct($key, $secret)
+ {
+ $this->key = $key;
+ $this->secret = $secret;
+ }
+
+ /**
+ * generates the basic string serialization of a token that a server
+ * would respond to request_token and access_token calls with
+ */
+ function to_string()
+ {
+ return "oauth_token=" .
+ OAuthUtil::urlencode_rfc3986($this->key) .
+ "&oauth_token_secret=" .
+ OAuthUtil::urlencode_rfc3986($this->secret);
+ }
+
+ function __toString()
+ {
+ return $this->to_string();
+ }
+}
--- /dev/null
+<?php
+
+namespace Friendica\Security\OAuth1;
+
+class OAuthUtil
+{
+ public static function urlencode_rfc3986($input)
+ {
+ if (is_array($input)) {
+ return array_map(['Friendica\Security\OAuth1\OAuthUtil', 'urlencode_rfc3986'], $input);
+ } else if (is_scalar($input)) {
+ return str_replace(
+ '+',
+ ' ',
+ str_replace('%7E', '~', rawurlencode($input))
+ );
+ } else {
+ return '';
+ }
+ }
+
+
+ // This decode function isn't taking into consideration the above
+ // modifications to the encoding process. However, this method doesn't
+ // seem to be used anywhere so leaving it as is.
+ public static function urldecode_rfc3986($string)
+ {
+ return urldecode($string);
+ }
+
+ // Utility function for turning the Authorization: header into
+ // parameters, has to do some unescaping
+ // Can filter out any non-oauth parameters if needed (default behaviour)
+ public static function split_header($header, $only_allow_oauth_parameters = true)
+ {
+ $pattern = '/(([-_a-z]*)=("([^"]*)"|([^,]*)),?)/';
+ $offset = 0;
+ $params = [];
+ while (preg_match($pattern, $header, $matches, PREG_OFFSET_CAPTURE, $offset) > 0) {
+ $match = $matches[0];
+ $header_name = $matches[2][0];
+ $header_content = (isset($matches[5])) ? $matches[5][0] : $matches[4][0];
+ if (preg_match('/^oauth_/', $header_name) || !$only_allow_oauth_parameters) {
+ $params[$header_name] = OAuthUtil::urldecode_rfc3986($header_content);
+ }
+ $offset = $match[1] + strlen($match[0]);
+ }
+
+ if (isset($params['realm'])) {
+ unset($params['realm']);
+ }
+
+ return $params;
+ }
+
+ // helper to try to sort out headers for people who aren't running apache
+ public static function get_headers()
+ {
+ if (function_exists('apache_request_headers')) {
+ // we need this to get the actual Authorization: header
+ // because apache tends to tell us it doesn't exist
+ $headers = apache_request_headers();
+
+ // sanitize the output of apache_request_headers because
+ // we always want the keys to be Cased-Like-This and arh()
+ // returns the headers in the same case as they are in the
+ // request
+ $out = [];
+ foreach ($headers as $key => $value) {
+ $key = str_replace(
+ " ",
+ "-",
+ ucwords(strtolower(str_replace("-", " ", $key)))
+ );
+ $out[$key] = $value;
+ }
+ } else {
+ // otherwise we don't have apache and are just going to have to hope
+ // that $_SERVER actually contains what we need
+ $out = [];
+ if (isset($_SERVER['CONTENT_TYPE']))
+ $out['Content-Type'] = $_SERVER['CONTENT_TYPE'];
+ if (isset($_ENV['CONTENT_TYPE']))
+ $out['Content-Type'] = $_ENV['CONTENT_TYPE'];
+
+ foreach ($_SERVER as $key => $value) {
+ if (substr($key, 0, 5) == "HTTP_") {
+ // this is chaos, basically it is just there to capitalize the first
+ // letter of every word that is not an initial HTTP and strip HTTP
+ // code from przemek
+ $key = str_replace(
+ " ",
+ "-",
+ ucwords(strtolower(str_replace("_", " ", substr($key, 5))))
+ );
+ $out[$key] = $value;
+ }
+ }
+ }
+ return $out;
+ }
+
+ // This function takes a input like a=b&a=c&d=e and returns the parsed
+ // parameters like this
+ // array('a' => array('b','c'), 'd' => 'e')
+ public static function parse_parameters($input)
+ {
+ if (!isset($input) || !$input) return [];
+
+ $pairs = explode('&', $input);
+
+ $parsed_parameters = [];
+ foreach ($pairs as $pair) {
+ $split = explode('=', $pair, 2);
+ $parameter = OAuthUtil::urldecode_rfc3986($split[0]);
+ $value = isset($split[1]) ? OAuthUtil::urldecode_rfc3986($split[1]) : '';
+
+ if (isset($parsed_parameters[$parameter])) {
+ // We have already recieved parameter(s) with this name, so add to the list
+ // of parameters with this name
+
+ if (is_scalar($parsed_parameters[$parameter])) {
+ // This is the first duplicate, so transform scalar (string) into an array
+ // so we can add the duplicates
+ $parsed_parameters[$parameter] = [$parsed_parameters[$parameter]];
+ }
+
+ $parsed_parameters[$parameter][] = $value;
+ } else {
+ $parsed_parameters[$parameter] = $value;
+ }
+ }
+ return $parsed_parameters;
+ }
+
+ public static function build_http_query($params)
+ {
+ if (!$params) return '';
+
+ // Urlencode both keys and values
+ $keys = OAuthUtil::urlencode_rfc3986(array_keys($params));
+ $values = OAuthUtil::urlencode_rfc3986(array_values($params));
+ $params = array_combine($keys, $values);
+
+ // Parameters are sorted by name, using lexicographical byte value ordering.
+ // Ref: Spec: 9.1.1 (1)
+ uksort($params, 'strcmp');
+
+ $pairs = [];
+ foreach ($params as $parameter => $value) {
+ if (is_array($value)) {
+ // If two or more parameters share the same name, they are sorted by their value
+ // Ref: Spec: 9.1.1 (1)
+ natsort($value);
+ foreach ($value as $duplicate_value) {
+ $pairs[] = $parameter . '=' . $duplicate_value;
+ }
+ } else {
+ $pairs[] = $parameter . '=' . $value;
+ }
+ }
+ // For each parameter, the name is separated from the corresponding value by an '=' character (ASCII code 61)
+ // Each name-value pair is separated by an '&' character (ASCII code 38)
+ return implode('&', $pairs);
+ }
+}
--- /dev/null
+This namespace contains the OAuth1 library for server and client usages
\ No newline at end of file
projects / friendica.git / commitdiff