235 lines
6.4 KiB
PHP
235 lines
6.4 KiB
PHP
<?php
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/*
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* Laconica - a distributed open-source microblogging tool
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* Copyright (C) 2008, Controlez-Vous, Inc.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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if (!defined('LACONICA')) { exit(1); }
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require_once(INSTALLDIR.'/lib/omb.php');
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require_once('Auth/Yadis/Yadis.php');
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class FinishremotesubscribeAction extends Action {
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function handle($args) {
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parent::handle($args);
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if (common_logged_in()) {
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common_user_error(_t('You can use the local subscription!'));
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return;
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}
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$omb = $_SESSION['oauth_authorization_request'];
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if (!$omb) {
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common_user_error(_t('Not expecting this response!'));
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return;
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}
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common_debug('stored request: '.print_r($omb,true), __FILE__);
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$req = OAuthRequest::from_request();
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$token = $req->get_parameter('oauth_token');
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# I think this is the success metric
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if ($token != $omb['token']) {
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common_user_error(_t('Not authorized.'));
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return;
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}
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$version = $req->get_parameter('omb_version');
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if ($version != OMB_VERSION_01) {
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common_user_error(_t('Unknown version of OMB protocol.'));
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return;
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}
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$nickname = $req->get_parameter('omb_listener_nickname');
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if (!$nickname) {
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common_user_error(_t('No nickname provided by remote server.'));
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return;
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}
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$profile_url = $req->get_parameter('omb_listener_profile');
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if (!$profile_url) {
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common_user_error(_t('No profile URL returned by server.'));
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return;
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}
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if (!Validate::uri($profile_url, array('allowed_schemes' => array('http', 'https')))) {
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common_user_error(_t('Invalid profile URL returned by server.'));
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return;
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}
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common_debug('listenee: "'.$omb['listenee'].'"', __FILE__);
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$user = User::staticGet('nickname', $omb['listenee']);
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if (!$user) {
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common_user_error(_t('User being listened to doesn\'t exist.'));
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return;
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}
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$fullname = $req->get_parameter('omb_listener_fullname');
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$homepage = $req->get_parameter('omb_listener_homepage');
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$bio = $req->get_parameter('omb_listener_bio');
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$location = $req->get_parameter('omb_listener_location');
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$avatar_url = $req->get_parameter('omb_listener_avatar');
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list($newtok, $newsecret) = $this->access_token($omb);
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if (!$newtok || !$newsecret) {
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common_user_error(_t('Couldn\'t convert request tokens to access tokens.'));
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return;
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}
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# XXX: possible attack point; subscribe and return someone else's profile URI
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$remote = Remote_profile::staticGet('uri', $omb['listener']);
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if ($remote) {
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$exists = true;
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$profile = Profile::staticGet($remote->id);
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$orig_remote = clone($remote);
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$orig_profile = clone($profile);
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# XXX: compare current postNotice and updateProfile URLs to the ones
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# stored in the DB to avoid (possibly...) above attack
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} else {
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$exists = false;
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$remote = new Remote_profile();
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$remote->uri = $omb['listener'];
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$profile = new Profile();
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}
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$profile->nickname = $nickname;
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$profile->profileurl = $profile_url;
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if ($fullname) {
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$profile->fullname = $fullname;
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}
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if ($homepage) {
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$profile->homepage = $homepage;
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}
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if ($bio) {
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$profile->bio = $bio;
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}
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if ($location) {
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$profile->location = $location;
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}
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if ($exists) {
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$profile->update($orig_profile);
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} else {
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$profile->created = DB_DataObject_Cast::dateTime(); # current time
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$id = $profile->insert();
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$remote->id = $id;
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}
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if ($avatar_url) {
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$this->add_avatar($profile, $avatar_url);
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}
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$remote->postnoticeurl = $omb[OMB_ENDPOINT_POSTNOTICE];
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$remote->updateprofileurl = $omb[OMB_ENDPOINT_UPDATEPROFILE];
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if ($exists) {
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$remote->update($orig_remote);
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} else {
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$remote->created = DB_DataObject_Cast::dateTime(); # current time
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$remote->insert;
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}
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$sub = new Subscription();
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$sub->subscriber = $remote->id;
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$sub->subscribed = $user->id;
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$sub->token = $newtok;
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$sub->secret = $newsecret;
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$sub->created = DB_DataObject_Cast::dateTime(); # current time
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if (!$sub->insert()) {
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common_user_error(_t('Couldn\'t insert new subscription.'));
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return;
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}
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# Clear the data
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unset($_SESSION['oauth_authorization_request']);
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# If we show subscriptions in reverse chron order, this should
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# show up close to the top of the page
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common_redirect(common_local_url('subscribed', array('nickname' =>
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$user->nickname)));
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}
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function add_avatar($profile, $url) {
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$temp_filename = tempnam(sys_get_temp_dir(), 'listener_avatar');
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copy($url, $temp_filename);
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return $profile->setOriginal($temp_filename);
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}
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function access_token($omb) {
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common_debug('starting request for access token', __FILE__);
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$con = omb_oauth_consumer();
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$tok = new OAuthToken($omb['token'], $omb['secret']);
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common_debug('using request token "'.$tok.'"', __FILE__);
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$url = $omb['access_token_url'];
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common_debug('using access token url "'.$url.'"', __FILE__);
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# XXX: Is this the right thing to do? Strip off GET params and make them
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# POST params? Seems wrong to me.
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$parsed = parse_url($url);
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$params = array();
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parse_str($parsed['query'], $params);
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$req = OAuthRequest::from_consumer_and_token($con, $tok, "POST", $url, $params);
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$req->set_parameter('omb_version', OMB_VERSION_01);
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# XXX: test to see if endpoint accepts this signature method
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$req->sign_request(omb_hmac_sha1(), $con, $tok);
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# We re-use this tool's fetcher, since it's pretty good
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common_debug('posting to access token url "'.$req->get_normalized_http_url().'"', __FILE__);
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common_debug('posting request data "'.$req->to_postdata().'"', __FILE__);
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$fetcher = Auth_Yadis_Yadis::getHTTPFetcher();
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$result = $fetcher->post($req->get_normalized_http_url(),
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$req->to_postdata());
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common_debug('got result: "'.print_r($result,TRUE).'"', __FILE__);
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if ($result->status != 200) {
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return NULL;
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}
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parse_str($result->body, $return);
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return array($return['oauth_token'], $return['oauth_token_secret']);
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}
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} |