128 lines
4.3 KiB
PHP
128 lines
4.3 KiB
PHP
<?php
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use Friendica\App;
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use Friendica\Core\L10n;
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use Friendica\Core\System;
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use Friendica\Database\DBA;
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use Friendica\Model\Contact;
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use Friendica\Model\Profile;
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function redir_init(App $a) {
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$url = defaults($_GET, 'url', '');
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$quiet = !empty($_GET['quiet']) ? '&quiet=1' : '';
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$con_url = defaults($_GET, 'conurl', '');
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if ($a->argc > 1 && intval($a->argv[1])) {
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$cid = intval($a->argv[1]);
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} elseif (local_user() && !empty($con_url)) {
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$cid = Contact::getIdForURL($con_url, local_user());
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} else {
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$cid = 0;
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}
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if (!empty($cid)) {
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$fields = ['id', 'uid', 'nurl', 'url', 'addr', 'name', 'network', 'poll', 'issued-id', 'dfrn-id', 'duplex'];
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$contact = DBA::selectFirst('contact', $fields, ['id' => $cid, 'uid' => [0, local_user()]]);
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if (!DBA::isResult($contact)) {
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notice(L10n::t('Contact not found.'));
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goaway(System::baseUrl());
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}
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$contact_url = $contact['url'];
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if ($contact['network'] !== NETWORK_DFRN // Authentication isn't supported for non DFRN contacts.
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|| (!local_user() && !remote_user()) // Visitors (not logged in or not remotes) can't authenticate.
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|| (!empty($a->contact['id']) && $a->contact['id'] == $cid)) // Local user is already authenticated.
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{
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goaway($url != '' ? $url : $contact_url);
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}
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if ($contact['uid'] == 0 && local_user()) {
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// Let's have a look if there is an established connection
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// between the puplic contact we have found and the local user.
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$contact = DBA::selectFirst('contact', $fields, ['nurl' => $contact['nurl'], 'uid' => local_user()]);
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if (DBA::isResult($contact)) {
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$cid = $contact['id'];
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}
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if (!empty($a->contact['id']) && $a->contact['id'] == $cid) {
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// Local user is already authenticated.
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$target_url = $url != '' ? $url : $contact_url;
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logger($contact['name'] . " is already authenticated. Redirecting to " . $target_url, LOGGER_DEBUG);
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goaway($target_url);
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}
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}
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if (remote_user()) {
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$host = substr(System::baseUrl() . ($a->urlpath ? '/' . $a->urlpath : ''), strpos(System::baseUrl(), '://') + 3);
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$remotehost = substr($contact['addr'], strpos($contact['addr'], '@') + 1);
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// On a local instance we have to check if the local user has already authenticated
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// with the local contact. Otherwise the local user would ask the local contact
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// for authentification everytime he/she is visiting a profile page of the local
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// contact.
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if ($host == $remotehost
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&& x($_SESSION, 'remote')
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&& is_array($_SESSION['remote']))
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{
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foreach ($_SESSION['remote'] as $v) {
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if ($v['uid'] == $_SESSION['visitor_visiting'] && $v['cid'] == $_SESSION['visitor_id']) {
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// Remote user is already authenticated.
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$target_url = $url != '' ? $url : $contact_url;
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logger($contact['name'] . " is already authenticated. Redirecting to " . $target_url, LOGGER_DEBUG);
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goaway($target_url);
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}
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}
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}
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}
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// Doing remote auth with dfrn.
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if (local_user()&& (!empty($contact['dfrn-id']) || !empty($contact['issued-id']))) {
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$dfrn_id = $orig_id = (($contact['issued-id']) ? $contact['issued-id'] : $contact['dfrn-id']);
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if ($contact['duplex'] && $contact['issued-id']) {
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$orig_id = $contact['issued-id'];
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$dfrn_id = '1:' . $orig_id;
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}
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if ($contact['duplex'] && $contact['dfrn-id']) {
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$orig_id = $contact['dfrn-id'];
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$dfrn_id = '0:' . $orig_id;
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}
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$sec = random_string();
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$fields = ['uid' => local_user(), 'cid' => $cid, 'dfrn_id' => $dfrn_id,
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'sec' => $sec, 'expire' => time() + 45];
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DBA::insert('profile_check', $fields);
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logger('mod_redir: ' . $contact['name'] . ' ' . $sec, LOGGER_DEBUG);
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$dest = (!empty($url) ? '&destination_url=' . $url : '');
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goaway($contact['poll'] . '?dfrn_id=' . $dfrn_id
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. '&dfrn_version=' . DFRN_PROTOCOL_VERSION . '&type=profile&sec=' . $sec . $dest . $quiet);
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}
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$url = $url != '' ? $url : $contact_url;
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}
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// If we don't have a connected contact, redirect with
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// the 'zrl' parameter.
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if (!empty($url)) {
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$my_profile = Profile::getMyURL();
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if (!empty($my_profile) && !link_compare($my_profile, $url)) {
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$separator = strpos($url, '?') ? '&' : '?';
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$url .= $separator . 'zrl=' . urlencode($my_profile);
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}
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logger('redirecting to ' . $url, LOGGER_DEBUG);
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goaway($url);
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}
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notice(L10n::t('Contact not found.'));
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goaway(System::baseUrl());
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}
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