517 lines
16 KiB
PHP
517 lines
16 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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define('TIMESTAMP_THRESHOLD', 300);
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class UserauthorizationAction extends Action {
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function handle($args) {
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parent::handle($args);
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if ($_SERVER['REQUEST_METHOD'] == 'POST') {
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# We've shown the form, now post user's choice
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$this->send_authorization();
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} else {
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if (!common_logged_in()) {
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# Go log in, and then come back
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common_debug('userauthorization.php - saving URL for returnto');
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$argsclone = $_GET;
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unset($argsclone['action']);
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common_set_returnto(common_local_url('userauthorization', $argsclone));
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common_debug('userauthorization.php - redirecting to login');
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common_redirect(common_local_url('login'));
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return;
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}
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try {
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# this must be a new request
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common_debug('userauthorization.php - getting new request');
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$req = $this->get_new_request();
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if (!$req) {
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common_server_error(_t('No request found!'));
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}
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common_debug('userauthorization.php - validating request');
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# XXX: only validate new requests, since nonce is one-time use
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$this->validate_request($req);
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common_debug('userauthorization.php - showing form');
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$this->store_request($req);
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$this->show_form($req);
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} catch (OAuthException $e) {
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$this->clear_request();
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common_server_error($e->getMessage());
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return;
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}
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}
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}
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function show_form($req) {
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$nickname = $req->get_parameter('omb_listenee_nickname');
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$profile = $req->get_parameter('omb_listenee_profile');
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$license = $req->get_parameter('omb_listenee_license');
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$fullname = $req->get_parameter('omb_listenee_fullname');
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$homepage = $req->get_parameter('omb_listenee_homepage');
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$bio = $req->get_parameter('omb_listenee_bio');
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$location = $req->get_parameter('omb_listenee_location');
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$avatar = $req->get_parameter('omb_listenee_avatar');
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common_show_header(_t('Authorize subscription'));
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common_element('p', _t('Please check these details to make sure '.
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'that you want to subscribe to this user\'s notices. '.
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'If you didn\'t just ask to subscribe to someone\'s notices, '.
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'click "Cancel".'));
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common_element_start('div', 'profile');
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if ($avatar) {
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common_element('img', array('src' => $avatar,
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'class' => 'avatar profile',
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'width' => AVATAR_PROFILE_SIZE,
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'height' => AVATAR_PROFILE_SIZE,
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'alt' => $nickname));
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}
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common_element('a', array('href' => $profile,
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'class' => 'external profile nickname'),
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$nickname);
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if ($fullname) {
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common_element_start('div', 'fullname');
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if ($homepage) {
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common_element('a', array('href' => $homepage),
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$fullname);
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} else {
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common_text($fullname);
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}
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common_element_end('div');
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}
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if ($location) {
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common_element('div', 'location', $location);
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}
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if ($bio) {
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common_element('div', 'bio', $bio);
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}
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common_element_start('div', 'license');
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common_element('a', array('href' => $license,
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'class' => 'license'),
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$license);
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common_element_end('div');
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common_element_end('div');
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common_element_start('form', array('method' => 'POST',
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'id' => 'userauthorization',
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'name' => 'userauthorization',
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'action' => common_local_url('userauthorization')));
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common_submit('accept', _t('Accept'));
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common_submit('reject', _t('Reject'));
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common_element_end('form');
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common_show_footer();
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}
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function send_authorization() {
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$req = $this->get_stored_request();
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if (!$req) {
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common_user_error(_t('No authorization request!'));
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return;
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}
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$callback = $req->get_parameter('oauth_callback');
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if ($this->arg('accept')) {
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if (!$this->authorize_token($req)) {
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common_server_error(_t('Error authorizing token'));
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}
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if (!$this->save_remote_profile($req)) {
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common_server_error(_t('Error saving remote profile'));
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}
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if (!$callback) {
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$this->show_accept_message($req->get_parameter('oauth_token'));
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} else {
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$params = array();
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$params['oauth_token'] = $req->get_parameter('oauth_token');
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$params['omb_version'] = OMB_VERSION_01;
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$user = User::staticGet('uri', $req->get_parameter('omb_listener'));
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$profile = $user->getProfile();
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$params['omb_listener_nickname'] = $user->nickname;
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$params['omb_listener_profile'] = common_local_url('showstream',
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array('nickname' => $user->nickname));
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if ($profile->fullname) {
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$params['omb_listener_fullname'] = $profile->fullname;
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}
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if ($profile->homepage) {
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$params['omb_listener_homepage'] = $profile->homepage;
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}
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if ($profile->bio) {
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$params['omb_listener_bio'] = $profile->bio;
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}
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if ($profile->location) {
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$params['omb_listener_location'] = $profile->location;
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}
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$avatar = $profile->getAvatar(AVATAR_PROFILE_SIZE);
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if ($avatar) {
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$params['omb_listener_avatar'] = $avatar->url;
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}
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$parts = array();
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foreach ($params as $k => $v) {
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$parts[] = $k . '=' . OAuthUtil::urlencodeRFC3986($v);
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}
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$query_string = implode('&', $parts);
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$parsed = parse_url($callback);
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$url = $callback . (($parsed['query']) ? '&' : '?') . $query_string;
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common_redirect($url, 303);
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}
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} else {
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if (!$callback) {
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$this->show_reject_message();
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} else {
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# XXX: not 100% sure how to signal failure... just redirect without token?
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common_redirect($callback, 303);
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}
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}
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}
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function authorize_token(&$req) {
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$consumer_key = @$req->get_parameter('oauth_consumer_key');
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$token_field = @$req->get_parameter('oauth_token');
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$rt = new Token();
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$rt->consumer_key = $consumer_key;
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$rt->tok = $token_field;
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if ($rt->find(TRUE)) {
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$orig_rt = clone($rt);
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$rt->state = 1; # Authorized but not used
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if ($rt->update($orig_rt)) {
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return true;
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}
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}
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return FALSE;
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}
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# XXX: refactor with similar code in finishremotesubscribe.php
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function save_remote_profile(&$req) {
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# FIXME: we should really do this when the consumer comes
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# back for an access token. If they never do, we've got stuff in a
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# weird state.
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$nickname = $req->get_parameter('omb_listenee_nickname');
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$fullname = $req->get_parameter('omb_listenee_fullname');
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$profile_url = $req->get_parameter('omb_listenee_profile');
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$homepage = $req->get_parameter('omb_listenee_homepage');
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$bio = $req->get_parameter('omb_listenee_bio');
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$location = $req->get_parameter('omb_listenee_location');
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$avatar_url = $req->get_parameter('omb_listenee_avatar');
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$listenee = $req->get_parameter('omb_listenee');
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$remote = Remote_profile::staticGet('uri', $listenee);
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if ($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($profile);
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} else {
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$exists = false;
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$remote = new Remote_profile();
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$remote->uri = $listenee;
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$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 = $id;
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}
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if ($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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if ($avatar_url) {
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$this->add_avatar($profile, $avatar_url);
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}
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$user = common_current_user();
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$datastore = omb_oauth_datastore();
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$consumer = $this->get_consumer($datastore, $req);
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$token = $this->get_token($datastore, $req, $consumer);
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$sub = new Subscription();
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$sub->subscriber = $user->id;
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$sub->subscribed = $remote->id;
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$sub->token = $token->key; # NOTE: request token, not valid for use!
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$sub->created = DB_DataObject_Cast::dateTime(); # current time
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if (!$sub->insert()) {
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common_user_error(_t('Couldn\'t insert new subscription.'));
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return;
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}
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}
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function add_avatar($profile, $url) {
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$temp_filename = tempnam(sys_get_temp_dir(), 'listenee_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 show_accept_message($tok) {
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common_show_header(_t('Subscription authorized'));
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common_element('p', NULL,
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_t('The subscription has been authorized, but no '.
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'callback URL was passed. Check with the site\'s instructions for '.
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'details on how to authorize the subscription. Your subscription token is:'));
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common_element('blockquote', 'token', $tok);
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common_show_footer();
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}
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function show_reject_message($tok) {
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common_show_header(_t('Subscription rejected'));
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common_element('p', NULL,
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_t('The subscription has been rejected, but no '.
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'callback URL was passed. Check with the site\'s instructions for '.
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'details on how to fully reject the subscription.'));
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common_show_footer();
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}
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function store_request($req) {
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common_ensure_session();
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$_SESSION['userauthorizationrequest'] = $req;
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}
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function clear_request() {
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common_ensure_session();
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unset($_SESSION['userauthorizationrequest']);
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}
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function get_stored_request() {
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common_ensure_session();
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$req = $_SESSION['userauthorizationrequest'];
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return $req;
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}
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function get_new_request() {
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$req = OAuthRequest::from_request();
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return $req;
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}
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# Throws an OAuthException if anything goes wrong
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function validate_request(&$req) {
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# OAuth stuff -- have to copy from OAuth.php since they're
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# all private methods, and there's no user-authentication method
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common_debug('checking version', __FILE__);
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$this->check_version($req);
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common_debug('getting datastore', __FILE__);
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$datastore = omb_oauth_datastore();
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common_debug('getting consumer', __FILE__);
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$consumer = $this->get_consumer($datastore, $req);
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common_debug('getting token', __FILE__);
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$token = $this->get_token($datastore, $req, $consumer);
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common_debug('checking timestamp', __FILE__);
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$this->check_timestamp($req);
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common_debug('checking nonce', __FILE__);
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$this->check_nonce($datastore, $req, $consumer, $token);
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common_debug('checking signature', __FILE__);
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$this->check_signature($req, $consumer, $token);
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common_debug('validating omb stuff', __FILE__);
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$this->validate_omb($req);
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common_debug('done validating', __FILE__);
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return true;
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}
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function validate_omb(&$req) {
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foreach (array('omb_version', 'omb_listener', 'omb_listenee',
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'omb_listenee_profile', 'omb_listenee_nickname',
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'omb_listenee_license') as $param)
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{
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if (!$req->get_parameter($param)) {
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throw new OAuthException("Required parameter '$param' not found");
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}
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}
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# Now, OMB stuff
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$version = $req->get_parameter('omb_version');
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if ($version != OMB_VERSION_01) {
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throw new OAuthException("OpenMicroBlogging version '$version' not supported");
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}
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$user = User::staticGet('uri', $req->get_parameter('omb_listener'));
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if (!$user) {
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throw new OAuthException("Listener URI '$listener' not found here");
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}
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$listenee = $req->get_parameter('omb_listenee');
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if (!Validate::uri($listenee) &&
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!common_valid_tag($listenee)) {
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throw new OAuthException("Listenee URI '$listenee' not a recognizable URI");
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}
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if (strlen($listenee) > 255) {
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throw new OAuthException("Listenee URI '$listenee' too long");
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}
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$nickname = $req->get_parameter('omb_listenee_nickname');
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if (!Validate::string($nickname, array('min_length' => 1,
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'max_length' => 64,
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'format' => VALIDATE_NUM . VALIDATE_ALPHA_LOWER))) {
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throw new OAuthException('Nickname must have only letters and numbers and no spaces.');
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}
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$profile = $req->get_parameter('omb_listenee_profile');
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if (!common_valid_http_url($profile)) {
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throw new OAuthException("Invalid profile URL '$profile'.");
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}
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$license = $req->get_parameter('omb_listenee_license');
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if (!common_valid_http_url($license)) {
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throw new OAuthException("Invalid license URL '$license'.");
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}
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# optional stuff
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$fullname = $req->get_parameter('omb_listenee_fullname');
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if ($fullname && strlen($fullname) > 255) {
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throw new OAuthException("Full name '$fullname' too long.");
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}
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$homepage = $req->get_parameter('omb_listenee_homepage');
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if ($homepage && (!common_valid_http_url($homepage) || strlen($homepage) > 255)) {
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throw new OAuthException("Invalid homepage '$homepage'");
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}
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$bio = $req->get_parameter('omb_listenee_bio');
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if ($bio && strlen($bio) > 140) {
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throw new OAuthException("Bio too long '$bio'");
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}
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$location = $req->get_parameter('omb_listenee_location');
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if ($location && strlen($location) > 255) {
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throw new OAuthException("Location too long '$location'");
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}
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$avatar = $req->get_parameter('omb_listenee_avatar');
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if ($avatar) {
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if (!common_valid_http_url($avatar) || strlen($avatar) > 255) {
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throw new OAuthException("Invalid avatar URL '$avatar'");
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}
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$size = @getimagesize($avatar);
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if (!$size) {
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throw new OAuthException("Can't read avatar URL '$avatar'");
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}
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if ($size[0] != AVATAR_PROFILE_SIZE || $size[1] != AVATAR_PROFILE_SIZE) {
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throw new OAuthException("Wrong size image at '$avatar'");
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}
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if (!in_array($size[2], array(IMAGETYPE_GIF, IMAGETYPE_JPEG,
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IMAGETYPE_PNG))) {
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throw new OAuthException("Wrong image type for '$avatar'");
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}
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}
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$callback = $req->get_parameter('oauth_callback');
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if ($callback && !common_valid_http_url($callback)) {
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throw new OAuthException("Invalid callback URL '$callback'");
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}
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}
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# Snagged from OAuthServer
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function check_version(&$req) {
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$version = $req->get_parameter("oauth_version");
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if (!$version) {
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$version = 1.0;
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}
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if ($version != 1.0) {
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throw new OAuthException("OAuth version '$version' not supported");
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}
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return $version;
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}
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# Snagged from OAuthServer
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function get_consumer($datastore, $req) {
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$consumer_key = @$req->get_parameter("oauth_consumer_key");
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if (!$consumer_key) {
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throw new OAuthException("Invalid consumer key");
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}
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$consumer = $datastore->lookup_consumer($consumer_key);
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if (!$consumer) {
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throw new OAuthException("Invalid consumer");
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}
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return $consumer;
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}
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# Mostly cadged from OAuthServer
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function get_token($datastore, &$req, $consumer) {/*{{{*/
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$token_field = @$req->get_parameter('oauth_token');
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$token = $datastore->lookup_token($consumer, 'request', $token_field);
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if (!$token) {
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throw new OAuthException("Invalid $token_type token: $token_field");
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}
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return $token;
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}
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function check_timestamp(&$req) {
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$timestamp = @$req->get_parameter('oauth_timestamp');
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$now = time();
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if ($now - $timestamp > TIMESTAMP_THRESHOLD) {
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throw new OAuthException("Expired timestamp, yours $timestamp, ours $now");
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}
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}
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# NOTE: don't call twice on the same request; will fail!
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function check_nonce(&$datastore, &$req, $consumer, $token) {
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$timestamp = @$req->get_parameter('oauth_timestamp');
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$nonce = @$req->get_parameter('oauth_nonce');
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|
$found = $datastore->lookup_nonce($consumer, $token, $nonce, $timestamp);
|
|
if ($found) {
|
|
throw new OAuthException("Nonce already used");
|
|
}
|
|
return true;
|
|
}
|
|
|
|
function check_signature(&$req, $consumer, $token) {
|
|
$signature_method = $this->get_signature_method($req);
|
|
$signature = $req->get_parameter('oauth_signature');
|
|
$valid_sig = $signature_method->check_signature($req,
|
|
$consumer,
|
|
$token,
|
|
$signature);
|
|
if (!$valid_sig) {
|
|
throw new OAuthException("Invalid signature");
|
|
}
|
|
}
|
|
|
|
function get_signature_method(&$req) {
|
|
$signature_method = @$req->get_parameter("oauth_signature_method");
|
|
if (!$signature_method) {
|
|
$signature_method = "PLAINTEXT";
|
|
}
|
|
if ($signature_method != 'HMAC-SHA1') {
|
|
throw new OAuthException("Signature method '$signature_method' not supported.");
|
|
}
|
|
return omb_hmac_sha1();
|
|
}
|
|
}
|