<?php
+/**
+ * @copyright Copyright (C) 2020, Friendica
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * 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 <https://www.gnu.org/licenses/>.
+ *
+ */
+
+use Friendica\App;
+use Friendica\Core\Logger;
+use Friendica\Core\Session;
+use Friendica\Core\System;
+use Friendica\Database\DBA;
+use Friendica\DI;
+use Friendica\Model\Contact;
+use Friendica\Model\Profile;
+use Friendica\Util\Network;
+use Friendica\Util\Strings;
function redir_init(App $a) {
+ if (!Session::isAuthenticated()) {
+ throw new \Friendica\Network\HTTPException\ForbiddenException(DI::l10n()->t('Access denied.'));
+ }
- $url = ((x($_GET,'url')) ? $_GET['url'] : '');
- $quiet = ((x($_GET,'quiet')) ? '&quiet=1' : '');
- $con_url = ((x($_GET,'conurl')) ? $_GET['conurl'] : '');
+ $url = $_GET['url'] ?? '';
+ $quiet = !empty($_GET['quiet']) ? '&quiet=1' : '';
- // traditional DFRN
+ if ($a->argc > 1 && intval($a->argv[1])) {
+ $cid = intval($a->argv[1]);
+ } else {
+ $cid = 0;
+ }
- if ( $con_url || (local_user() && $a->argc > 1 && intval($a->argv[1])) ) {
+ // Try magic auth before the legacy stuff
+ redir_magic($a, $cid, $url);
- if ($con_url) {
- $con_url = str_replace('https', 'http', $con_url);
+ if (empty($cid)) {
+ throw new \Friendica\Network\HTTPException\BadRequestException(DI::l10n()->t('Bad Request.'));
+ }
- $r = q("SELECT * FROM `contact` WHERE `nurl` = '%s' AND `uid` = %d LIMIT 1",
- dbesc($con_url),
- intval(local_user())
- );
+ $fields = ['id', 'uid', 'nurl', 'url', 'addr', 'name', 'network', 'poll', 'issued-id', 'dfrn-id', 'duplex', 'pending'];
+ $contact = DBA::selectFirst('contact', $fields, ['id' => $cid, 'uid' => [0, local_user()]]);
+ if (!DBA::isResult($contact)) {
+ throw new \Friendica\Network\HTTPException\NotFoundException(DI::l10n()->t('Contact not found.'));
+ }
- if ((! dbm::is_result($r)) || ($r[0]['network'] !== NETWORK_DFRN))
- goaway(z_root());
+ $contact_url = $contact['url'];
- $cid = $r[0]['id'];
+ if (!empty($a->contact['id']) && $a->contact['id'] == $cid) {
+ // Local user is already authenticated.
+ redir_check_url($contact_url, $url);
+ $a->redirect($url ?: $contact_url);
+ }
+
+ if ($contact['uid'] == 0 && local_user()) {
+ // Let's have a look if there is an established connection
+ // between the public contact we have found and the local user.
+ $contact = DBA::selectFirst('contact', $fields, ['nurl' => $contact['nurl'], 'uid' => local_user()]);
+
+ if (DBA::isResult($contact)) {
+ $cid = $contact['id'];
}
- else {
- $cid = $a->argv[1];
- $r = q("SELECT * FROM `contact` WHERE `id` = %d AND `uid` = %d LIMIT 1",
- intval($cid),
- intval(local_user())
- );
+ if (!empty($a->contact['id']) && $a->contact['id'] == $cid) {
+ // Local user is already authenticated.
+ redir_check_url($contact_url, $url);
+ $target_url = $url ?: $contact_url;
+ Logger::log($contact['name'] . " is already authenticated. Redirecting to " . $target_url, Logger::DEBUG);
+ $a->redirect($target_url);
+ }
+ }
- if ((! dbm::is_result($r)) || ($r[0]['network'] !== NETWORK_DFRN))
- goaway(z_root());
+ if (remote_user()) {
+ $host = substr(DI::baseUrl()->getUrlPath() . (DI::baseUrl()->getUrlPath() ? '/' . DI::baseUrl()->getUrlPath() : ''), strpos(DI::baseUrl()->getUrlPath(), '://') + 3);
+ $remotehost = substr($contact['addr'], strpos($contact['addr'], '@') + 1);
+
+ // On a local instance we have to check if the local user has already authenticated
+ // with the local contact. Otherwise the local user would ask the local contact
+ // for authentification everytime he/she is visiting a profile page of the local
+ // contact.
+ if (($host == $remotehost) && (Session::getRemoteContactID(Session::get('visitor_visiting')) == Session::get('visitor_id'))) {
+ // Remote user is already authenticated.
+ redir_check_url($contact_url, $url);
+ $target_url = $url ?: $contact_url;
+ Logger::log($contact['name'] . " is already authenticated. Redirecting to " . $target_url, Logger::DEBUG);
+ $a->redirect($target_url);
}
+ }
- $dfrn_id = $orig_id = (($r[0]['issued-id']) ? $r[0]['issued-id'] : $r[0]['dfrn-id']);
+ // Doing remote auth with dfrn.
+ if (local_user() && (!empty($contact['dfrn-id']) || !empty($contact['issued-id'])) && empty($contact['pending'])) {
+ $dfrn_id = $orig_id = (($contact['issued-id']) ? $contact['issued-id'] : $contact['dfrn-id']);
- if ($r[0]['duplex'] && $r[0]['issued-id']) {
- $orig_id = $r[0]['issued-id'];
+ if ($contact['duplex'] && $contact['issued-id']) {
+ $orig_id = $contact['issued-id'];
$dfrn_id = '1:' . $orig_id;
}
- if ($r[0]['duplex'] && $r[0]['dfrn-id']) {
- $orig_id = $r[0]['dfrn-id'];
+ if ($contact['duplex'] && $contact['dfrn-id']) {
+ $orig_id = $contact['dfrn-id'];
$dfrn_id = '0:' . $orig_id;
}
- $sec = random_string();
+ $sec = Strings::getRandomHex();
+
+ $fields = ['uid' => local_user(), 'cid' => $cid, 'dfrn_id' => $dfrn_id,
+ 'sec' => $sec, 'expire' => time() + 45];
+ DBA::insert('profile_check', $fields);
- q("INSERT INTO `profile_check` ( `uid`, `cid`, `dfrn_id`, `sec`, `expire`)
- VALUES( %d, %s, '%s', '%s', %d )",
- intval(local_user()),
- intval($cid),
- dbesc($dfrn_id),
- dbesc($sec),
- intval(time() + 45)
- );
+ Logger::log('mod_redir: ' . $contact['name'] . ' ' . $sec, Logger::DEBUG);
- logger('mod_redir: ' . $r[0]['name'] . ' ' . $sec, LOGGER_DEBUG);
- $dest = (($url) ? '&destination_url=' . $url : '');
- goaway ($r[0]['poll'] . '?dfrn_id=' . $dfrn_id
- . '&dfrn_version=' . DFRN_PROTOCOL_VERSION . '&type=profile&sec=' . $sec . $dest . $quiet );
+ $dest = (!empty($url) ? '&destination_url=' . $url : '');
+
+ System::externalRedirect($contact['poll'] . '?dfrn_id=' . $dfrn_id
+ . '&dfrn_version=' . DFRN_PROTOCOL_VERSION . '&type=profile&sec=' . $sec . $dest . $quiet);
}
- if (local_user()) {
- $handle = $a->user['nickname'] . '@' . substr(App::get_baseurl(),strpos(App::get_baseurl(),'://')+3);
+ if (empty($url)) {
+ throw new \Friendica\Network\HTTPException\BadRequestException(DI::l10n()->t('Bad Request.'));
}
- if (remote_user()) {
- $handle = $_SESSION['handle'];
+
+ // If we don't have a connected contact, redirect with
+ // the 'zrl' parameter.
+ $my_profile = Profile::getMyURL();
+
+ if (!empty($my_profile) && !Strings::compareLink($my_profile, $url)) {
+ $separator = strpos($url, '?') ? '&' : '?';
+
+ $url .= $separator . 'zrl=' . urlencode($my_profile);
}
- if ($url) {
- $url = str_replace('{zid}','&zid=' . $handle,$url);
- goaway($url);
+ Logger::log('redirecting to ' . $url, Logger::DEBUG);
+ $a->redirect($url);
+}
+
+function redir_magic($a, $cid, $url)
+{
+ $visitor = Profile::getMyURL();
+ if (!empty($visitor)) {
+ Logger::info('Got my url', ['visitor' => $visitor]);
+ }
+
+ $contact = DBA::selectFirst('contact', ['url'], ['id' => $cid]);
+ if (!DBA::isResult($contact)) {
+ Logger::info('Contact not found', ['id' => $cid]);
+ throw new \Friendica\Network\HTTPException\NotFoundException(DI::l10n()->t('Contact not found.'));
+ } else {
+ $contact_url = $contact['url'];
+ redir_check_url($contact_url, $url);
+ $target_url = $url ?: $contact_url;
+ }
+
+ $basepath = Contact::getBasepath($contact_url);
+
+ // We don't use magic auth when there is no visitor, we are on the same system or we visit our own stuff
+ if (empty($visitor) || Strings::compareLink($basepath, DI::baseUrl()) || Strings::compareLink($contact_url, $visitor)) {
+ Logger::info('Redirecting without magic', ['target' => $target_url, 'visitor' => $visitor, 'contact' => $contact_url]);
+ DI::app()->redirect($target_url);
+ }
+
+ // Test for magic auth on the target system
+ $serverret = Network::curl($basepath . '/magic');
+ if ($serverret->isSuccess()) {
+ $separator = strpos($target_url, '?') ? '&' : '?';
+ $target_url .= $separator . 'zrl=' . urlencode($visitor) . '&addr=' . urlencode($contact_url);
+
+ Logger::info('Redirecting with magic', ['target' => $target_url, 'visitor' => $visitor, 'contact' => $contact_url]);
+ System::externalRedirect($target_url);
+ } else {
+ Logger::info('No magic for contact', ['contact' => $contact_url]);
+ }
+}
+
+function redir_check_url(string $contact_url, string $url)
+{
+ if (empty($contact_url) || empty($url)) {
+ return;
+ }
+
+ $url_host = parse_url($url, PHP_URL_HOST);
+ if (empty($url_host)) {
+ $url_host = parse_url(DI::baseUrl(), PHP_URL_HOST);
+ }
+
+ $contact_url_host = parse_url($contact_url, PHP_URL_HOST);
+
+ if ($url_host == $contact_url_host) {
+ return;
}
- goaway(z_root());
+ Logger::error('URL check host mismatch', ['contact' => $contact_url, 'url' => $url]);
+ throw new \Friendica\Network\HTTPException\ForbiddenException(DI::l10n()->t('Access denied.'));
}
projects / friendica.git / blobdiff