+++ /dev/null
-<?php
-
-//ini_set('display_errors', 1);
-//error_reporting(E_ALL | E_STRICT);
-
-// Regex to filter out the client identifier
-// (described in Section 2 of IETF draft)
-// IETF draft does not prescribe a format for these, however
-// I've arbitrarily chosen alphanumeric strings with hyphens and underscores, 3-12 characters long
-// Feel free to change.
-define("REGEX_CLIENT_ID", "/^[a-z0-9-_]{3,12}$/i");
-
-// Used to define the name of the OAuth access token parameter (POST/GET/etc.)
-// IETF Draft sections 5.2 and 5.3 specify that it should be called "oauth_token"
-// but other implementations use things like "access_token"
-// I won't be heartbroken if you change it, but it might be better to adhere to the spec
-define("OAUTH_TOKEN_PARAM_NAME", "oauth_token");
-
-// Client types (for client authorization)
-//define("WEB_SERVER_CLIENT_TYPE", "web_server");
-//define("USER_AGENT_CLIENT_TYPE", "user_agent");
-//define("REGEX_CLIENT_TYPE", "/^(web_server|user_agent)$/");
-define("ACCESS_TOKEN_AUTH_RESPONSE_TYPE", "token");
-define("AUTH_CODE_AUTH_RESPONSE_TYPE", "code");
-define("CODE_AND_TOKEN_AUTH_RESPONSE_TYPE", "code-and-token");
-define("REGEX_AUTH_RESPONSE_TYPE", "/^(token|code|code-and-token)$/");
-
-// Grant Types (for token obtaining)
-define("AUTH_CODE_GRANT_TYPE", "authorization-code");
-define("USER_CREDENTIALS_GRANT_TYPE", "basic-credentials");
-define("ASSERTION_GRANT_TYPE", "assertion");
-define("REFRESH_TOKEN_GRANT_TYPE", "refresh-token");
-define("NONE_GRANT_TYPE", "none");
-define("REGEX_TOKEN_GRANT_TYPE", "/^(authorization-code|basic-credentials|assertion|refresh-token|none)$/");
-
-/* Error handling constants */
-
-// HTTP status codes
-define("ERROR_NOT_FOUND", "404 Not Found");
-define("ERROR_BAD_REQUEST", "400 Bad Request");
-
-// TODO: Extend for i18n
-
-// "Official" OAuth 2.0 errors
-define("ERROR_REDIRECT_URI_MISMATCH", "redirect-uri-mismatch");
-define("ERROR_INVALID_CLIENT_CREDENTIALS", "invalid-client-credentials");
-define("ERROR_UNAUTHORIZED_CLIENT", "unauthorized-client");
-define("ERROR_USER_DENIED", "access-denied");
-define("ERROR_INVALID_REQUEST", "invalid-request");
-define("ERROR_INVALID_CLIENT_ID", "invalid-client-id");
-define("ERROR_UNSUPPORTED_RESPONSE_TYPE", "unsupported-response-type");
-define("ERROR_INVALID_SCOPE", "invalid-scope");
-define("ERROR_INVALID_GRANT", "invalid-grant");
-
-// Protected resource errors
-define("ERROR_INVALID_TOKEN", "invalid-token");
-define("ERROR_EXPIRED_TOKEN", "expired-token");
-define("ERROR_INSUFFICIENT_SCOPE", "insufficient-scope");
-
-// Messages
-define("ERROR_INVALID_RESPONSE_TYPE", "Invalid response type.");
-
-// Errors that we made up
-
-// Error for trying to use a grant type that we haven't implemented
-define("ERROR_UNSUPPORTED_GRANT_TYPE", "unsupported-grant-type");
-
-abstract class OAuth2 {
-
- /* Subclasses must implement the following functions */
-
- // Make sure that the client id is valid
- // If a secret is required, check that they've given the right one
- // Must return false if the client credentials are invalid
- abstract protected function auth_client_credentials($client_id, $client_secret = null);
-
- // OAuth says we should store request URIs for each registered client
- // Implement this function to grab the stored URI for a given client id
- // Must return false if the given client does not exist or is invalid
- abstract protected function get_redirect_uri($client_id);
-
- // We need to store and retrieve access token data as we create and verify tokens
- // Implement these functions to do just that
-
- // Look up the supplied token id from storage, and return an array like:
- //
- // array(
- // "client_id" => <stored client id>,
- // "expires" => <stored expiration timestamp>,
- // "scope" => <stored scope (may be null)
- // )
- //
- // Return null if the supplied token is invalid
- //
- abstract protected function get_access_token($token_id);
-
- // Store the supplied values
- abstract protected function store_access_token($token_id, $client_id, $expires, $scope = null);
-
- /*
- *
- * Stuff that should get overridden by subclasses
- *
- * I don't want to make these abstract, because then subclasses would have
- * to implement all of them, which is too much work.
- *
- * So they're just stubs. Override the ones you need.
- *
- */
-
- // You should override this function with something,
- // or else your OAuth provider won't support any grant types!
- protected function get_supported_grant_types() {
- // If you support all grant types, then you'd do:
- // return array(
- // AUTH_CODE_GRANT_TYPE,
- // USER_CREDENTIALS_GRANT_TYPE,
- // ASSERTION_GRANT_TYPE,
- // REFRESH_TOKEN_GRANT_TYPE,
- // NONE_GRANT_TYPE
- // );
-
- return array();
- }
-
- // You should override this function with your supported response types
- protected function get_supported_auth_response_types() {
- return array(
- AUTH_CODE_AUTH_RESPONSE_TYPE,
- ACCESS_TOKEN_AUTH_RESPONSE_TYPE,
- CODE_AND_TOKEN_AUTH_RESPONSE_TYPE
- );
- }
-
- // If you want to support scope use, then have this function return a list
- // of all acceptable scopes (used to throw the invalid-scope error)
- protected function get_supported_scopes() {
- // Example:
- // return array("my-friends", "photos", "whatever-else");
- return array();
- }
-
- // If you want to restrict clients to certain authorization response types,
- // override this function
- // Given a client identifier and auth type, return true or false
- // (auth type would be one of the values contained in REGEX_AUTH_RESPONSE_TYPE)
- protected function authorize_client_response_type($client_id, $response_type) {
- return true;
- }
-
- // If you want to restrict clients to certain grant types, override this function
- // Given a client identifier and grant type, return true or false
- protected function authorize_client($client_id, $grant_type) {
- return true;
- }
-
- /* Functions that help grant access tokens for various grant types */
-
- // Fetch authorization code data (probably the most common grant type)
- // IETF Draft 4.1.1: http://tools.ietf.org/html/draft-ietf-oauth-v2-08#section-4.1.1
- // Required for AUTH_CODE_GRANT_TYPE
- protected function get_stored_auth_code($code) {
- // Retrieve the stored data for the given authorization code
- // Should return:
- //
- // array (
- // "client_id" => <stored client id>,
- // "redirect_uri" => <stored redirect URI>,
- // "expires" => <stored code expiration time>,
- // "scope" => <stored scope values (space-separated string), or can be omitted if scope is unused>
- // )
- //
- // Return null if the code is invalid.
-
- return null;
- }
-
- // Take the provided authorization code values and store them somewhere (db, etc.)
- // Required for AUTH_CODE_GRANT_TYPE
- protected function store_auth_code($code, $client_id, $redirect_uri, $expires, $scope) {
- // This function should be the storage counterpart to get_stored_auth_code
-
- // If storage fails for some reason, we're not currently checking
- // for any sort of success/failure, so you should bail out of the
- // script and provide a descriptive fail message
- }
-
- // Grant access tokens for basic user credentials
- // IETF Draft 4.1.2: http://tools.ietf.org/html/draft-ietf-oauth-v2-08#section-4.1.2
- // Required for USER_CREDENTIALS_GRANT_TYPE
- protected function check_user_credentials($client_id, $username, $password) {
- // Check the supplied username and password for validity
- // You can also use the $client_id param to do any checks required
- // based on a client, if you need that
- // If the username and password are invalid, return false
-
- // If the username and password are valid, and you want to verify the scope of
- // a user's access, return an array with the scope values, like so:
- //
- // array (
- // "scope" => <stored scope values (space-separated string)>
- // )
- //
- // We'll check the scope you provide against the requested scope before
- // providing an access token.
- //
- // Otherwise, just return true.
-
- return false;
- }
-
- // Grant access tokens for assertions
- // IETF Draft 4.1.3: http://tools.ietf.org/html/draft-ietf-oauth-v2-08#section-4.1.3
- // Required for ASSERTION_GRANT_TYPE
- protected function check_assertion($client_id, $assertion_type, $assertion) {
- // Check the supplied assertion for validity
- // You can also use the $client_id param to do any checks required
- // based on a client, if you need that
- // If the assertion is invalid, return false
-
- // If the assertion is valid, and you want to verify the scope of
- // an access request, return an array with the scope values, like so:
- //
- // array (
- // "scope" => <stored scope values (space-separated string)>
- // )
- //
- // We'll check the scope you provide against the requested scope before
- // providing an access token.
- //
- // Otherwise, just return true.
-
- return false;
- }
-
- // Grant refresh access tokens
- // IETF Draft 4.1.4: http://tools.ietf.org/html/draft-ietf-oauth-v2-08#section-4.1.4
- // Required for REFRESH_TOKEN_GRANT_TYPE
- protected function get_refresh_token($refresh_token) {
- // Retrieve the stored data for the given refresh token
- // Should return:
- //
- // array (
- // "client_id" => <stored client id>,
- // "expires" => <refresh token expiration time>,
- // "scope" => <stored scope values (space-separated string), or can be omitted if scope is unused>
- // )
- //
- // Return null if the token id is invalid.
-
- return null;
- }
-
- // Store refresh access tokens
- // Required for REFRESH_TOKEN_GRANT_TYPE
- protected function store_refresh_token($token, $client_id, $expires, $scope = null) {
- // If storage fails for some reason, we're not currently checking
- // for any sort of success/failure, so you should bail out of the
- // script and provide a descriptive fail message
-
- return;
- }
-
- // Grant access tokens for the "none" grant type
- // Not really described in the IETF Draft, so I just left a method stub...do whatever you want!
- // Required for NONE_GRANT_TYPE
- protected function check_none_access($client_id) {
- return false;
- }
-
- protected function get_default_authentication_realm() {
- // Change this to whatever authentication realm you want to send in a WWW-Authenticate header
- return "Service";
- }
-
- /* End stuff that should get overridden */
-
- private $access_token_lifetime = 3600;
- private $auth_code_lifetime = 30;
- private $refresh_token_lifetime = 1209600; // Two weeks
-
- public function __construct($access_token_lifetime = 3600, $auth_code_lifetime = 30, $refresh_token_lifetime = 1209600) {
- $this->access_token_lifetime = $access_token_lifetime;
- $this->auth_code_lifetime = $auth_code_lifetime;
- $this->refresh_token_lifetime = $refresh_token_lifetime;
- }
-
- /* Resource protecting (Section 5) */
-
- // Check that a valid access token has been provided
- //
- // The scope parameter defines any required scope that the token must have
- // If a scope param is provided and the token does not have the required scope,
- // we bounce the request
- //
- // Some implementations may choose to return a subset of the protected resource
- // (i.e. "public" data) if the user has not provided an access token
- // or if the access token is invalid or expired
- //
- // The IETF spec says that we should send a 401 Unauthorized header and bail immediately
- // so that's what the defaults are set to
- //
- // Here's what each parameter does:
- // $scope = A space-separated string of required scope(s), if you want to check for scope
- // $exit_not_present = If true and no access token is provided, send a 401 header and exit, otherwise return false
- // $exit_invalid = If true and the implementation of get_access_token returns null, exit, otherwise return false
- // $exit_expired = If true and the access token has expired, exit, otherwise return false
- // $exit_scope = If true the access token does not have the required scope(s), exit, otherwise return false
- // $realm = If you want to specify a particular realm for the WWW-Authenticate header, supply it here
- public function verify_access_token($scope = null, $exit_not_present = true, $exit_invalid = true, $exit_expired = true, $exit_scope = true, $realm = null) {
- $token_param = $this->get_access_token_param();
- if ($token_param === false) // Access token was not provided
- return $exit_not_present ? $this->send_401_unauthorized($realm, $scope) : false;
-
- // Get the stored token data (from the implementing subclass)
- $token = $this->get_access_token($token_param);
- if ($token === null)
- return $exit_invalid ? $this->send_401_unauthorized($realm, $scope, ERROR_INVALID_TOKEN) : false;
-
- // Check token expiration (I'm leaving this check separated, later we'll fill in better error messages)
- if (isset($token["expires"]) && time() > $token["expires"])
- return $exit_expired ? $this->send_401_unauthorized($realm, $scope, ERROR_EXPIRED_TOKEN) : false;
-
- // Check scope, if provided
- // If token doesn't have a scope, it's null/empty, or it's insufficient, then throw an error
- if ($scope &&
- (!isset($token["scope"]) || !$token["scope"] || !$this->check_scope($scope, $token["scope"])))
- return $exit_scope ? $this->send_401_unauthorized($realm, $scope, ERROR_INSUFFICIENT_SCOPE) : false;
-
- return true;
- }
-
-
- // Returns true if everything in required scope is contained in available scope
- // False if something in required scope is not in available scope
- private function check_scope($required_scope, $available_scope) {
- // The required scope should match or be a subset of the available scope
- if (!is_array($required_scope))
- $required_scope = explode(" ", $required_scope);
-
- if (!is_array($available_scope))
- $available_scope = explode(" ", $available_scope);
-
- return (count(array_diff($required_scope, $available_scope)) == 0);
- }
-
- // Send a 401 unauthorized header with the given realm
- // and an error, if provided
- private function send_401_unauthorized($realm, $scope, $error = null) {
- $realm = $realm === null ? $this->get_default_authentication_realm() : $realm;
-
- $auth_header = "WWW-Authenticate: Token realm='".$realm."'";
-
- if ($scope)
- $auth_header .= ", scope='".$scope."'";
-
- if ($error !== null)
- $auth_header .= ", error='".$error."'";
-
- header("HTTP/1.1 401 Unauthorized");
- header($auth_header);
-
- exit;
- }
-
- // Pulls the access token out of the HTTP request
- // Either from the Authorization header or GET/POST/etc.
- // Returns false if no token is present
- // TODO: Support POST or DELETE
- private function get_access_token_param() {
- $auth_header = $this->get_authorization_header();
-
- if ($auth_header !== false) {
- // Make sure only the auth header is set
- if (isset($_GET[OAUTH_TOKEN_PARAM_NAME]) || isset($_POST[OAUTH_TOKEN_PARAM_NAME]))
- $this->error(ERROR_BAD_REQUEST, ERROR_INVALID_REQUEST);
-
- $auth_header = trim($auth_header);
-
- // Make sure it's Token authorization
- if (strcmp(substr($auth_header, 0, 6),"Token ") !== 0)
- $this->error(ERROR_BAD_REQUEST, ERROR_INVALID_REQUEST);
-
- // Parse the rest of the header
- if (preg_match('/\s*token\s*="(.+)"/', substr($auth_header, 6), $matches) == 0 || count($matches) < 2)
- $this->error(ERROR_BAD_REQUEST, ERROR_INVALID_REQUEST);
-
- return $matches[1];
- }
-
- if (isset($_GET[OAUTH_TOKEN_PARAM_NAME])) {
- if (isset($_POST[OAUTH_TOKEN_PARAM_NAME])) // Both GET and POST are not allowed
- $this->error(ERROR_BAD_REQUEST, ERROR_INVALID_REQUEST);
-
- return $_GET[OAUTH_TOKEN_PARAM_NAME];
- }
-
- if (isset($_POST[OAUTH_TOKEN_PARAM_NAME]))
- return $_POST[OAUTH_TOKEN_PARAM_NAME];
-
- return false;
- }
-
- /* Access token granting (Section 4) */
-
- // Grant or deny a requested access token
- // This would be called from the "/token" endpoint as defined in the spec
- // Obviously, you can call your endpoint whatever you want
- public function grant_access_token() {
- $filters = array(
- "grant_type" => array("filter" => FILTER_VALIDATE_REGEXP, "options" => array("regexp" => REGEX_TOKEN_GRANT_TYPE), "flags" => FILTER_REQUIRE_SCALAR),
- "scope" => array("flags" => FILTER_REQUIRE_SCALAR),
- "code" => array("flags" => FILTER_REQUIRE_SCALAR),
- "redirect_uri" => array("filter" => FILTER_VALIDATE_URL, "flags" => array(FILTER_FLAG_SCHEME_REQUIRED, FILTER_REQUIRE_SCALAR)),
- "username" => array("flags" => FILTER_REQUIRE_SCALAR),
- "password" => array("flags" => FILTER_REQUIRE_SCALAR),
- "assertion_type" => array("flags" => FILTER_REQUIRE_SCALAR),
- "assertion" => array("flags" => FILTER_REQUIRE_SCALAR),
- "refresh_token" => array("flags" => FILTER_REQUIRE_SCALAR),
- );
-
- $input = filter_input_array(INPUT_POST, $filters);
-
- // Grant Type must be specified.
- if (!$input["grant_type"])
- $this->error(ERROR_BAD_REQUEST, ERROR_INVALID_REQUEST);
-
- // Make sure we've implemented the requested grant type
- if (!in_array($input["grant_type"], $this->get_supported_grant_types()))
- $this->error(ERROR_BAD_REQUEST, ERROR_UNSUPPORTED_GRANT_TYPE);
-
- // Authorize the client
- $client = $this->get_client_credentials();
-
- if ($this->auth_client_credentials($client[0], $client[1]) === false)
- $this->error(ERROR_BAD_REQUEST, ERROR_INVALID_CLIENT_CREDENTIALS);
-
- if (!$this->authorize_client($client[0], $input["grant_type"]))
- $this->error(ERROR_BAD_REQUEST, ERROR_UNAUTHORIZED_CLIENT);
-
- // Do the granting
- switch ($input["grant_type"]) {
- case AUTH_CODE_GRANT_TYPE:
- if (!$input["code"] || !$input["redirect_uri"])
- $this->error(ERROR_BAD_REQUEST, ERROR_INVALID_REQUEST);
-
- $stored = $this->get_stored_auth_code($input["code"]);
-
- if ($stored === null || $input["redirect_uri"] != $stored["redirect_uri"] || $client[0] != $stored["client_id"])
- $this->error(ERROR_BAD_REQUEST, ERROR_INVALID_GRANT);
-
- if ($stored["expires"] > time())
- $this->error(ERROR_BAD_REQUEST, ERROR_INVALID_GRANT);
-
- break;
- case USER_CREDENTIALS_GRANT_TYPE:
- if (!$input["username"] || !$input["password"])
- $this->error(ERROR_BAD_REQUEST, ERROR_INVALID_REQUEST);
-
- $stored = $this->check_user_credentials($client[0], $input["username"], $input["password"]);
-
- if ($stored === false)
- $this->error(ERROR_BAD_REQUEST, ERROR_INVALID_GRANT);
-
- break;
- case ASSERTION_GRANT_TYPE:
- if (!$input["assertion_type"] || !$input["assertion"])
- $this->error(ERROR_BAD_REQUEST, ERROR_INVALID_REQUEST);
-
- $stored = $this->check_assertion($client[0], $input["assertion_type"], $input["assertion"]);
-
- if ($stored === false)
- $this->error(ERROR_BAD_REQUEST, ERROR_INVALID_GRANT);
-
- break;
- case REFRESH_TOKEN_GRANT_TYPE:
- if (!$input["refresh_token"])
- $this->error(ERROR_BAD_REQUEST, ERROR_INVALID_REQUEST);
-
- $stored = $this->get_refresh_token($input["refresh_token"]);
-
- if ($stored === null || $client[0] != $stored["client_id"])
- $this->error(ERROR_BAD_REQUEST, ERROR_INVALID_GRANT);
-
- if ($stored["expires"] > time())
- $this->error(ERROR_BAD_REQUEST, ERROR_INVALID_GRANT);
-
- break;
- case NONE_GRANT_TYPE:
- $stored = $this->check_none_access($client[0]);
-
- if ($stored === false)
- $this->error(ERROR_BAD_REQUEST, ERROR_INVALID_REQUEST);
- }
-
- // Check scope, if provided
- if ($input["scope"] && (!is_array($stored) || !isset($stored["scope"]) || !$this->check_scope($input["scope"], $stored["scope"])))
- $this->error(ERROR_BAD_REQUEST, ERROR_INVALID_SCOPE);
-
- if (!$input["scope"])
- $input["scope"] = null;
-
- $token = $this->create_access_token($client[0], $input["scope"]);
-
- $this->send_json_headers();
- echo json_encode($token);
- }
-
- // Internal function used to get the client credentials from HTTP basic auth or POST data
- // See http://tools.ietf.org/html/draft-ietf-oauth-v2-08#section-2
- private function get_client_credentials() {
- if (isset($_SERVER["PHP_AUTH_USER"]) && $_POST && isset($_POST["client_id"]))
- $this->error(ERROR_BAD_REQUEST, ERROR_INVALID_CLIENT_CREDENTIALS);
-
- // Try basic auth
- if (isset($_SERVER["PHP_AUTH_USER"]))
- return array($_SERVER["PHP_AUTH_USER"], $_SERVER["PHP_AUTH_PW"]);
-
- // Try POST
- if ($_POST && isset($_POST["client_id"])) {
- if (isset($_POST["client_secret"]))
- return array($_POST["client_id"], $_POST["client_secret"]);
-
- return array($_POST["client_id"], NULL);
- }
-
- // No credentials were specified
- $this->error(ERROR_BAD_REQUEST, ERROR_INVALID_CLIENT_CREDENTIALS);
- }
-
- /* End-user/client Authorization (Section 3 of IETF Draft) */
-
- // Pull the authorization request data out of the HTTP request
- // and return it so the authorization server can prompt the user
- // for approval
- public function get_authorize_params() {
- $filters = array(
- "client_id" => array("filter" => FILTER_VALIDATE_REGEXP, "options" => array("regexp" => REGEX_CLIENT_ID), "flags" => FILTER_REQUIRE_SCALAR),
- "response_type" => array("filter" => FILTER_VALIDATE_REGEXP, "options" => array("regexp" => REGEX_AUTH_RESPONSE_TYPE), "flags" => FILTER_REQUIRE_SCALAR),
- "redirect_uri" => array("filter" => FILTER_VALIDATE_URL, "flags" => array(FILTER_FLAG_SCHEME_REQUIRED, FILTER_REQUIRE_SCALAR)),
- "state" => array("flags" => FILTER_REQUIRE_SCALAR),
- "scope" => array("flags" => FILTER_REQUIRE_SCALAR),
- );
-
- $input = filter_input_array(INPUT_GET, $filters);
-
- // Make sure a valid client id was supplied
- if (!$input["client_id"]) {
- if ($input["redirect_uri"])
- $this->callback_error($input["redirect_uri"], ERROR_INVALID_CLIENT_ID, $input["state"]);
-
- $this->error(ERROR_BAD_REQUEST, ERROR_INVALID_CLIENT_ID); // We don't have a good URI to use
- }
-
- // redirect_uri is not required if already established via other channels
- // check an existing redirect URI against the one supplied
- $redirect_uri = $this->get_redirect_uri($input["client_id"]);
-
- // At least one of: existing redirect URI or input redirect URI must be specified
- if (!$redirect_uri && !$input["redirect_uri"])
- $this->error(ERROR_BAD_REQUEST, ERROR_INVALID_REQUEST);
-
- // get_redirect_uri should return false if the given client ID is invalid
- // this probably saves us from making a separate db call, and simplifies the method set
- if ($redirect_uri === false)
- $this->callback_error($input["redirect_uri"], ERROR_INVALID_CLIENT_ID, $input["state"]);
-
- // If there's an existing uri and one from input, verify that they match
- if ($redirect_uri && $input["redirect_uri"]) {
- // Ensure that the input uri starts with the stored uri
- if (strcasecmp(substr($input["redirect_uri"], 0, strlen($redirect_uri)),$redirect_uri) !== 0)
- $this->callback_error($input["redirect_uri"], ERROR_REDIRECT_URI_MISMATCH, $input["state"]);
- } elseif ($redirect_uri) { // They did not provide a uri from input, so use the stored one
- $input["redirect_uri"] = $redirect_uri;
- }
-
- // type and client_id are required
- if (!$input["response_type"])
- $this->callback_error($input["redirect_uri"], ERROR_INVALID_REQUEST, $input["state"], ERROR_INVALID_RESPONSE_TYPE);
-
- // Check requested auth response type against the list of supported types
- if (array_search($input["response_type"], $this->get_supported_auth_response_types()) === false)
- $this->callback_error($input["redirect_uri"], ERROR_UNSUPPORTED_RESPONSE_TYPE, $input["state"]);
-
- // Validate that the requested scope is supported
- if ($input["scope"] && !$this->check_scope($input["scope"], $this->get_supported_scopes()))
- $this->callback_error($input["redirect_uri"], ERROR_INVALID_SCOPE, $input["state"]);
-
- return $input;
- }
-
- // After the user has approved or denied the access request
- // the authorization server should call this function to redirect
- // the user appropriately
-
- // The params all come from the results of get_authorize_params
- // except for $is_authorized -- this is true or false depending on whether
- // the user authorized the access
- public function finish_client_authorization($is_authorized, $type, $client_id, $redirect_uri, $state, $scope = null) {
- if ($state !== null)
- $result["query"]["state"] = $state;
-
- if ($is_authorized === false) {
- $result["query"]["error"] = ERROR_USER_DENIED;
- } else {
- if ($type == AUTH_CODE_AUTH_RESPONSE_TYPE || $type == CODE_AND_TOKEN_AUTH_RESPONSE_TYPE)
- $result["query"]["code"] = $this->create_auth_code($client_id, $redirect_uri, $scope);
-
- if ($type == ACCESS_TOKEN_AUTH_RESPONSE_TYPE || $type == CODE_AND_TOKEN_AUTH_RESPONSE_TYPE)
- $result["fragment"] = $this->create_access_token($client_id, $scope);
- }
-
- $this->do_redirect_uri_callback($redirect_uri, $result);
- }
-
- /* Other/utility functions */
-
- private function do_redirect_uri_callback($redirect_uri, $result) {
- header("HTTP/1.1 302 Found");
- header("Location: " . $this->build_uri($redirect_uri, $result));
- exit;
- }
-
- private function build_uri($uri, $data) {
- $parse_url = parse_url($uri);
-
- // Add our data to the parsed uri
- foreach ($data as $k => $v) {
- if (isset($parse_url[$k]))
- $parse_url[$k] .= "&" . http_build_query($v);
- else
- $parse_url[$k] = http_build_query($v);
- }
-
- // Put humpty dumpty back together
- return
- ((isset($parse_url["scheme"])) ? $parse_url["scheme"] . "://" : "")
- .((isset($parse_url["user"])) ? $parse_url["user"] . ((isset($parse_url["pass"])) ? ":" . $parse_url["pass"] : "") ."@" : "")
- .((isset($parse_url["host"])) ? $parse_url["host"] : "")
- .((isset($parse_url["port"])) ? ":" . $parse_url["port"] : "")
- .((isset($parse_url["path"])) ? $parse_url["path"] : "")
- .((isset($parse_url["query"])) ? "?" . $parse_url["query"] : "")
- .((isset($parse_url["fragment"])) ? "#" . $parse_url["fragment"] : "");
- }
-
- // This belongs in a separate factory, but to keep it simple, I'm just keeping it here.
- private function create_access_token($client_id, $scope) {
- $token = array(
- "access_token" => $this->gen_access_token(),
- "expires_in" => $this->access_token_lifetime,
- "scope" => $scope
- );
-
- $this->store_access_token($token["access_token"], $client_id, time() + $this->access_token_lifetime, $scope);
-
- // Issue a refresh token also, if we support them
- if (in_array(REFRESH_TOKEN_GRANT_TYPE, $this->get_supported_grant_types())) {
- $token["refresh_token"] = $this->gen_access_token();
- $this->store_refresh_token($token["refresh_token"], $client_id, time() + $this->refresh_token_lifetime, $scope);
- }
-
- return $token;
- }
-
- private function create_auth_code($client_id, $redirect_uri, $scope) {
- $code = $this->gen_auth_code();
- $this->store_auth_code($code, $client_id, $redirect_uri, time() + $this->auth_code_lifetime, $scope);
- return $code;
- }
-
- // Implementing classes may want to override these two functions
- // to implement other access token or auth code generation schemes
- private function gen_access_token() {
- return base64_encode(pack('N6', mt_rand(), mt_rand(), mt_rand(), mt_rand(), mt_rand(), mt_rand()));
- }
-
- private function gen_auth_code() {
- return base64_encode(pack('N6', mt_rand(), mt_rand(), mt_rand(), mt_rand(), mt_rand(), mt_rand()));
- }
-
- // Implementing classes may need to override this function for use on non-Apache web servers
- // Just pull out the Authorization HTTP header and return it
- // Return false if the Authorization header does not exist
- private function get_authorization_header() {
- if (array_key_exists("HTTP_AUTHORIZATION", $_SERVER))
- return $_SERVER["HTTP_AUTHORIZATION"];
-
- if (function_exists("apache_request_headers")) {
- $headers = apache_request_headers();
-
- if (array_key_exists("Authorization", $headers))
- return $headers["Authorization"];
- }
-
- return false;
- }
-
- private function send_json_headers() {
- header("Content-Type: application/json");
- header("Cache-Control: no-store");
- }
-
- public function error($code, $message = null) {
- header("HTTP/1.1 " . $code);
-
- if ($message) {
- $this->send_json_headers();
- echo json_encode(array("error" => $message));
- }
-
- exit;
- }
-
- public function callback_error($redirect_uri, $error, $state, $message = null, $error_uri = null) {
- $result["query"]["error"] = $error;
-
- if ($state)
- $result["query"]["state"] = $state;
-
- if ($message)
- $result["query"]["error_description"] = $message;
-
- if ($error_uri)
- $result["query"]["error_uri"] = $error_uri;
-
- $this->do_redirect_uri_callback($redirect_uri, $result);
- }
-}
\ No newline at end of file
projects / friendica.git / commitdiff