summaryrefslogtreecommitdiff
path: root/actions/remotesubscribe.php
diff options
context:
space:
mode:
Diffstat (limited to 'actions/remotesubscribe.php')
-rw-r--r--actions/remotesubscribe.php248
1 files changed, 248 insertions, 0 deletions
diff --git a/actions/remotesubscribe.php b/actions/remotesubscribe.php
new file mode 100644
index 000000000..68f5f0fc3
--- /dev/null
+++ b/actions/remotesubscribe.php
@@ -0,0 +1,248 @@
+<?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(INSTALLDIR.'/lib/omb.php');
+require_once('Auth/Yadis/Yadis.php');
+
+class RemotesubscribeAction extends Action {
+
+ function handle($args) {
+
+ parent::handle($args);
+
+ if (common_logged_in()) {
+ common_user_error(_t('You can use the local subscription!'));
+ return;
+ }
+
+ if ($_SERVER['REQUEST_METHOD'] == 'POST') {
+ $this->remote_subscription();
+ } else {
+ $this->show_form();
+ }
+ }
+
+ function show_form($err=NULL) {
+ common_show_header(_t('Remote subscribe'));
+ if ($err) {
+ common_element('div', 'error', $err);
+ }
+ common_element_start('form', array('id' => 'remotesubscribe', 'method' => 'POST',
+ 'action' => common_local_url('remotesubscribe')));
+ common_input('profile', _t('Profile URL'));
+ common_submit('submit', _t('Subscribe'));
+ common_element_end('form');
+ }
+
+ function remote_subscription() {
+ $user = $this->get_user();
+
+ if (!$user) {
+ $this->show_form(_t('No such user!'));
+ return;
+ }
+
+ $profile = $this->trimmed('profile');
+
+ if (!$profile) {
+ $this->show_form(_t('No such user!'));
+ return;
+ }
+
+ if (!Validate::uri($profile, array('allowed_schemes' => array('http', 'https')))) {
+ $this->show_form(_t('Invalid profile URL (bad format)'));
+ return;
+ }
+
+ $fetcher = Auth_Yadis_Yadis::getHTTPFetcher();
+ $yadis = Auth_Yadis_Yadis::discover($profile, $fetcher);
+
+ if (!$yadis) {
+ $this->show_form(_t('Not a valid profile URL (no YADIS document).'));
+ return;
+ }
+
+ $omb = $this->getOmb($yadis);
+
+ if (!$omb) {
+ $this->show_form(_t('Not a valid profile URL (incorrect services).'));
+ return;
+ }
+
+ list($token, $secret) = $this->request_token($omb);
+
+ if (!$token || !$secret) {
+ $this->show_form(_t('Couldn\'t get a request token.'));
+ return;
+ }
+
+ $this->request_authorization($user, $omb, $token, $secret);
+ }
+
+ function get_user() {
+ $user = NULL;
+ $nickname = $this->trimmed('nickname');
+ if ($nickname) {
+ $user = User::staticGet('nickname', $nickname);
+ }
+ return $user;
+ }
+
+ function getOmb($yadis) {
+ static $endpoints = array(OMB_ENDPOINT_UPDATEPROFILE, OMB_ENDPOINT_POSTNOTICE,
+ OAUTH_ENDPOINT_REQUEST, OAUTH_ENDPOINT_AUTHORIZE,
+ OAUTH_ENDPOINT_ACCESS);
+ $omb = array();
+ $services = $yadis->services(); # ordered by priority
+ foreach ($services as $service) {
+ $types = $service->matchTypes($endpoints);
+ foreach ($types as $type) {
+ # We take the first one, since it's the highest priority
+ if (!array_key_exists($type, $omb)) {
+ # URIs is an array, priority-ordered
+ $omb[$type] = $service->getURIs();
+ # Special handling for request
+ if ($type == OAUTH_ENDPOINT_REQUEST) {
+ $nodes = $service->getElements('LocalID');
+ if (!$nodes) {
+ # error
+ return NULL;
+ }
+ $omb['listener'] = $service->parser->content($nodes[0]);
+ }
+ }
+ }
+ }
+ foreach ($endpoints as $ep) {
+ if (!array_key_exists($ep, $omb)) {
+ return NULL;
+ }
+ }
+ if (!array_key_exists('listener', $omb)) {
+ return NULL;
+ }
+ return $omb;
+ }
+
+ function request_token($omb) {
+ $con = omb_oauth_consumer();
+
+ $url = $omb[OAUTH_ENDPOINT_REQUEST][0];
+
+ # XXX: Is this the right thing to do? Strip off GET params and make them
+ # POST params? Seems wrong to me.
+
+ $parsed = parse_url($url);
+ $params = array();
+ parse_str($parsed['query'], $params);
+
+ $req = OAuthRequest::from_consumer_and_token($con, NULL, "POST", $url, $params);
+
+ $req->set_parameter('omb_listener', $omb['listener']);
+ $req->set_parameter('omb_version', OMB_VERSION_01);
+
+ # XXX: test to see if endpoint accepts this signature method
+
+ $req->sign_request(omb_hmac_sha1(), $con, NULL);
+
+ # 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 != 200) {
+ return NULL;
+ }
+
+ parse_str($result->body, $return);
+
+ return array($return['oauth_token'], $return['oauth_token_secret']);
+ }
+
+ function request_authorization($user, $omb, $token, $secret) {
+ global $config; # for license URL
+
+ $con = omb_oauth_consumer();
+ $tok = new OAuthToken($token, $secret);
+
+ $url = $omb[OAUTH_ENDPOINT_AUTHORIZE][0];
+
+ # XXX: Is this the right thing to do? Strip off GET params and make them
+ # POST params? Seems wrong to me.
+
+ $parsed = parse_url($url);
+ $params = array();
+ parse_str($parsed['query'], $params);
+
+ $req = OAuthRequest::from_consumer_and_token($con, $tok, 'GET', $url, $params);
+
+ # We send over a ton of information. This lets the other
+ # server store info about our user, and it lets the current
+ # user decide if they really want to authorize the subscription.
+
+ $req->set_parameter('omb_version', OMB_VERSION_01);
+ $req->set_parameter('omb_listener', $omb['listener']);
+ $req->set_parameter('omb_listenee', $user->uri);
+ $req->set_parameter('omb_listenee_profile', common_profile_url($user->nickname));
+ $req->set_parameter('omb_listenee_nickname', $user->nickname);
+ $req->set_parameter('omb_listenee_license', $config['license']['url']);
+ $profile = $user->getProfile();
+ if ($profile->fullname) {
+ $req->set_parameter('omb_listenee_fullname', $profile->fullname);
+ }
+ if ($profile->homepage) {
+ $req->set_parameter('omb_listenee_homepage', $profile->homepage);
+ }
+ if ($profile->bio) {
+ $req->set_parameter('omb_listenee_bio', $profile->bio);
+ }
+ if ($profile->location) {
+ $req->set_parameter('omb_listenee_location', $profile->location);
+ }
+ $avatar = $profile->getAvatar(AVATAR_PROFILE_SIZE);
+ if ($avatar) {
+ $req->set_parameter('omb_listenee_avatar', $avatar->url);
+ }
+
+ $nonce = $this->make_nonce();
+
+ $req->set_parameter('oauth_callback', common_local_url('finishremotesubscribe',
+ array('nonce' => $nonce)));
+
+ # XXX: test to see if endpoint accepts this signature method
+
+ $req->sign_request(omb_hmac_sha1(), $con, $tok);
+
+ # store all our info here
+
+ $omb['listenee'] = $user->nickname;
+ $omb['token'] = $token;
+ $omb['secret'] = $secret;
+
+ $_SESSION[$nonce] = $omb;
+
+ # Redirect to authorization service
+
+ common_redirect($req->to_url());
+ return;
+ }
+} \ No newline at end of file
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-12-01 00:34:37 +0000