--- /dev/null
+<?php
+
+/**
+ * An implementation of the OpenID Provider Authentication Policy
+ * Extension 1.0
+ *
+ * See:
+ * http://openid.net/developers/specs/
+ */
+
+require_once "Auth/OpenID/Extension.php";
+
+define('Auth_OpenID_PAPE_NS_URI',
+ "http://specs.openid.net/extensions/pape/1.0");
+
+define('PAPE_AUTH_MULTI_FACTOR_PHYSICAL',
+ 'http://schemas.openid.net/pape/policies/2007/06/multi-factor-physical');
+define('PAPE_AUTH_MULTI_FACTOR',
+ 'http://schemas.openid.net/pape/policies/2007/06/multi-factor');
+define('PAPE_AUTH_PHISHING_RESISTANT',
+ 'http://schemas.openid.net/pape/policies/2007/06/phishing-resistant');
+
+define('PAPE_TIME_VALIDATOR',
+ '^[0-9]{4,4}-[0-9][0-9]-[0-9][0-9]T[0-9][0-9]:[0-9][0-9]:[0-9][0-9]Z$');
+/**
+ * A Provider Authentication Policy request, sent from a relying party
+ * to a provider
+ *
+ * preferred_auth_policies: The authentication policies that
+ * the relying party prefers
+ *
+ * max_auth_age: The maximum time, in seconds, that the relying party
+ * wants to allow to have elapsed before the user must re-authenticate
+ */
+class Auth_OpenID_PAPE_Request extends Auth_OpenID_Extension {
+
+ var $ns_alias = 'pape';
+ var $ns_uri = Auth_OpenID_PAPE_NS_URI;
+
+ function Auth_OpenID_PAPE_Request($preferred_auth_policies=null,
+ $max_auth_age=null)
+ {
+ if ($preferred_auth_policies === null) {
+ $preferred_auth_policies = array();
+ }
+
+ $this->preferred_auth_policies = $preferred_auth_policies;
+ $this->max_auth_age = $max_auth_age;
+ }
+
+ /**
+ * Add an acceptable authentication policy URI to this request
+ *
+ * This method is intended to be used by the relying party to add
+ * acceptable authentication types to the request.
+ *
+ * policy_uri: The identifier for the preferred type of
+ * authentication.
+ */
+ function addPolicyURI($policy_uri)
+ {
+ if (!in_array($policy_uri, $this->preferred_auth_policies)) {
+ $this->preferred_auth_policies[] = $policy_uri;
+ }
+ }
+
+ function getExtensionArgs()
+ {
+ $ns_args = array(
+ 'preferred_auth_policies' =>
+ implode(' ', $this->preferred_auth_policies)
+ );
+
+ if ($this->max_auth_age !== null) {
+ $ns_args['max_auth_age'] = strval($this->max_auth_age);
+ }
+
+ return $ns_args;
+ }
+
+ /**
+ * Instantiate a Request object from the arguments in a checkid_*
+ * OpenID message
+ */
+ function fromOpenIDRequest($request)
+ {
+ $obj = new Auth_OpenID_PAPE_Request();
+ $args = $request->message->getArgs(Auth_OpenID_PAPE_NS_URI);
+
+ if ($args === null || $args === array()) {
+ return null;
+ }
+
+ $obj->parseExtensionArgs($args);
+ return $obj;
+ }
+
+ /**
+ * Set the state of this request to be that expressed in these
+ * PAPE arguments
+ *
+ * @param args: The PAPE arguments without a namespace
+ */
+ function parseExtensionArgs($args)
+ {
+ // preferred_auth_policies is a space-separated list of policy
+ // URIs
+ $this->preferred_auth_policies = array();
+
+ $policies_str = Auth_OpenID::arrayGet($args, 'preferred_auth_policies');
+ if ($policies_str) {
+ foreach (explode(' ', $policies_str) as $uri) {
+ if (!in_array($uri, $this->preferred_auth_policies)) {
+ $this->preferred_auth_policies[] = $uri;
+ }
+ }
+ }
+
+ // max_auth_age is base-10 integer number of seconds
+ $max_auth_age_str = Auth_OpenID::arrayGet($args, 'max_auth_age');
+ if ($max_auth_age_str) {
+ $this->max_auth_age = Auth_OpenID::intval($max_auth_age_str);
+ } else {
+ $this->max_auth_age = null;
+ }
+ }
+
+ /**
+ * Given a list of authentication policy URIs that a provider
+ * supports, this method returns the subsequence of those types
+ * that are preferred by the relying party.
+ *
+ * @param supported_types: A sequence of authentication policy
+ * type URIs that are supported by a provider
+ *
+ * @return array The sub-sequence of the supported types that are
+ * preferred by the relying party. This list will be ordered in
+ * the order that the types appear in the supported_types
+ * sequence, and may be empty if the provider does not prefer any
+ * of the supported authentication types.
+ */
+ function preferredTypes($supported_types)
+ {
+ $result = array();
+
+ foreach ($supported_types as $st) {
+ if (in_array($st, $this->preferred_auth_policies)) {
+ $result[] = $st;
+ }
+ }
+ return $result;
+ }
+}
+
+/**
+ * A Provider Authentication Policy response, sent from a provider to
+ * a relying party
+ */
+class Auth_OpenID_PAPE_Response extends Auth_OpenID_Extension {
+
+ var $ns_alias = 'pape';
+ var $ns_uri = Auth_OpenID_PAPE_NS_URI;
+
+ function Auth_OpenID_PAPE_Response($auth_policies=null, $auth_time=null,
+ $nist_auth_level=null)
+ {
+ if ($auth_policies) {
+ $this->auth_policies = $auth_policies;
+ } else {
+ $this->auth_policies = array();
+ }
+
+ $this->auth_time = $auth_time;
+ $this->nist_auth_level = $nist_auth_level;
+ }
+
+ /**
+ * Add a authentication policy to this response
+ *
+ * This method is intended to be used by the provider to add a
+ * policy that the provider conformed to when authenticating the
+ * user.
+ *
+ * @param policy_uri: The identifier for the preferred type of
+ * authentication.
+ */
+ function addPolicyURI($policy_uri)
+ {
+ if (!in_array($policy_uri, $this->auth_policies)) {
+ $this->auth_policies[] = $policy_uri;
+ }
+ }
+
+ /**
+ * Create an Auth_OpenID_PAPE_Response object from a successful
+ * OpenID library response.
+ *
+ * @param success_response $success_response A SuccessResponse
+ * from Auth_OpenID_Consumer::complete()
+ *
+ * @returns: A provider authentication policy response from the
+ * data that was supplied with the id_res response.
+ */
+ function fromSuccessResponse($success_response)
+ {
+ $obj = new Auth_OpenID_PAPE_Response();
+
+ // PAPE requires that the args be signed.
+ $args = $success_response->getSignedNS(Auth_OpenID_PAPE_NS_URI);
+
+ if ($args === null || $args === array()) {
+ return null;
+ }
+
+ $result = $obj->parseExtensionArgs($args);
+
+ if ($result === false) {
+ return null;
+ } else {
+ return $obj;
+ }
+ }
+
+ /**
+ * Parse the provider authentication policy arguments into the
+ * internal state of this object
+ *
+ * @param args: unqualified provider authentication policy
+ * arguments
+ *
+ * @param strict: Whether to return false when bad data is
+ * encountered
+ *
+ * @return null The data is parsed into the internal fields of
+ * this object.
+ */
+ function parseExtensionArgs($args, $strict=false)
+ {
+ $policies_str = Auth_OpenID::arrayGet($args, 'auth_policies');
+ if ($policies_str && $policies_str != "none") {
+ $this->auth_policies = explode(" ", $policies_str);
+ }
+
+ $nist_level_str = Auth_OpenID::arrayGet($args, 'nist_auth_level');
+ if ($nist_level_str !== null) {
+ $nist_level = Auth_OpenID::intval($nist_level_str);
+
+ if ($nist_level === false) {
+ if ($strict) {
+ return false;
+ } else {
+ $nist_level = null;
+ }
+ }
+
+ if (0 <= $nist_level && $nist_level < 5) {
+ $this->nist_auth_level = $nist_level;
+ } else if ($strict) {
+ return false;
+ }
+ }
+
+ $auth_time = Auth_OpenID::arrayGet($args, 'auth_time');
+ if ($auth_time !== null) {
+ if (ereg(PAPE_TIME_VALIDATOR, $auth_time)) {
+ $this->auth_time = $auth_time;
+ } else if ($strict) {
+ return false;
+ }
+ }
+ }
+
+ function getExtensionArgs()
+ {
+ $ns_args = array();
+ if (count($this->auth_policies) > 0) {
+ $ns_args['auth_policies'] = implode(' ', $this->auth_policies);
+ } else {
+ $ns_args['auth_policies'] = 'none';
+ }
+
+ if ($this->nist_auth_level !== null) {
+ if (!in_array($this->nist_auth_level, range(0, 4), true)) {
+ return false;
+ }
+ $ns_args['nist_auth_level'] = strval($this->nist_auth_level);
+ }
+
+ if ($this->auth_time !== null) {
+ if (!ereg(PAPE_TIME_VALIDATOR, $this->auth_time)) {
+ return false;
+ }
+
+ $ns_args['auth_time'] = $this->auth_time;
+ }
+
+ return $ns_args;
+ }
+}
+
+?>
\ No newline at end of file
projects / quix0rs-gnu-social.git / blobdiff