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<?php
/*
* Laconica - a distributed open-source microblogging tool
* Copyright (C) 2008, Controlez-Vous, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
if (!defined('LACONICA')) { exit(1); }
require_once('OAuth.php');
require_once(INSTALLDIR.'/lib/oauthstore.php');
require_once(INSTALLDIR.'/classes/Consumer.php');
require_once(INSTALLDIR.'/classes/Nonce.php');
require_once(INSTALLDIR.'/classes/Token.php');
require_once('Auth/Yadis/Yadis.php');
define('OAUTH_NAMESPACE', 'http://oauth.net/core/1.0/');
define('OMB_NAMESPACE', 'http://openmicroblogging.org/protocol/0.1');
define('OMB_VERSION_01', 'http://openmicroblogging.org/protocol/0.1');
define('OAUTH_DISCOVERY', 'http://oauth.net/discovery/1.0');
define('OMB_ENDPOINT_UPDATEPROFILE', OMB_NAMESPACE.'/updateProfile');
define('OMB_ENDPOINT_POSTNOTICE', OMB_NAMESPACE.'/postNotice');
define('OAUTH_ENDPOINT_REQUEST', OAUTH_NAMESPACE.'endpoint/request');
define('OAUTH_ENDPOINT_AUTHORIZE', OAUTH_NAMESPACE.'endpoint/authorize');
define('OAUTH_ENDPOINT_ACCESS', OAUTH_NAMESPACE.'endpoint/access');
define('OAUTH_ENDPOINT_RESOURCE', OAUTH_NAMESPACE.'endpoint/resource');
define('OAUTH_AUTH_HEADER', OAUTH_NAMESPACE.'parameters/auth-header');
define('OAUTH_POST_BODY', OAUTH_NAMESPACE.'parameters/post-body');
define('OAUTH_HMAC_SHA1', OAUTH_NAMESPACE.'signature/HMAC-SHA1');
function omb_oauth_consumer() {
static $con = NULL;
if (!$con) {
$con = new OAuthConsumer(common_root_url(), '');
}
return $con;
}
function omb_oauth_server() {
static $server = null;
if (!$server) {
$server = new OAuthServer(omb_oauth_datastore());
$server->add_signature_method(omb_hmac_sha1());
}
return $server;
}
function omb_oauth_datastore() {
static $store = NULL;
if (!$store) {
$store = new LaconicaOAuthDataStore();
}
return $store;
}
function omb_hmac_sha1() {
static $hmac_method = NULL;
if (!$hmac_method) {
$hmac_method = new OAuthSignatureMethod_HMAC_SHA1();
}
return $hmac_method;
}
function omb_get_services($xrd, $type) {
return $xrd->services(array(omb_service_filter($type)));
}
function omb_service_filter($type) {
return create_function('$s',
'return omb_match_service($s, \''.$type.'\');');
}
function omb_match_service($service, $type) {
return in_array($type, $service->getTypes());
}
function omb_service_uri($service) {
if (!$service) {
return NULL;
}
$uris = $service->getURIs();
if (!$uris) {
return NULL;
}
return $uris[0];
}
function omb_local_id($service) {
if (!$service) {
return NULL;
}
$els = $service->getElements('xrd:LocalID');
if (!$els) {
return NULL;
}
$el = $els[0];
return $service->parser->content($el);
}
function omb_broadcast_remote_subscribers($notice) {
# First, get remote users subscribed to this profile
$sub = new Subscription();
$sub->subscribed = $notice->profile_id;
$rp = new Remote_profile();
$sub->addJoin($rp, 'INNER', NULL, 'subscriber');
if ($sub->find()) {
$posted = array();
while ($sub->fetch()) {
if (!$posted[$rp->postnoticeurl]) {
if (omb_post_notice($notice, $rp, $sub)) {
$posted[$rp->postnoticeurl] = TRUE;
}
}
}
}
}
function omb_post_notice($notice, $remote_profile, $subscription) {
global $config; # for license URL
$user = User::staticGet('id', $notice->profile_id);
$con = omb_oauth_consumer();
$token = new OAuthToken($subscription->token, $subscription->secret);
$url = $remote_profile->postnoticeurl;
$parsed = parse_url($url);
$params = array();
parse_str($parsed['query'], $params);
$req = OAuthRequest::from_consumer_and_token($con, $token,
"POST", $url, $params);
$req->set_parameter('omb_version', OMB_VERSION_01);
$req->set_parameter('omb_listenee', $user->uri);
$req->set_parameter('omb_notice', $notice->uri);
$req->set_parameter('omb_notice_content', $notice->content);
$req->set_parameter('omb_notice_url', common_local_url('shownotice',
array('notice' =>
$notice->id)));
$req->set_parameter('omb_notice_license', $config['license']['url']);
$req->sign_request(omb_hmac_sha1(), $con, $tok);
# We re-use this tool's fetcher, since it's pretty good
$fetcher = Auth_Yadis_Yadis::getHTTPFetcher();
$result = $fetcher->post($req->get_normalized_http_url(),
$req->to_postdata());
if ($result->status == 403) { # not authorized, don't send again
$subscription->delete();
return false;
} else if ($result->status != 200) {
return false;
} else { # success!
parse_str($result->body, $return);
if ($return['omb_version'] == OMB_VERSION_01) {
return true;
} else {
return false;
}
}
}
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