mirror of
https://github.com/friendica/friendica
synced 2024-11-18 06:23:41 +00:00
304 lines
6.9 KiB
PHP
304 lines
6.9 KiB
PHP
<?php
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require_once('include/items.php');
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require_once('include/auth.php');
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function dfrn_poll_init(&$a) {
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$dfrn_id = '';
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if(x($_GET,'dfrn_id'))
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$dfrn_id = $_GET['dfrn_id'];
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if(x($_GET,'type'))
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$type = $_GET['type'];
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if(x($_GET,'last_update'))
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$last_update = $_GET['last_update'];
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$dfrn_version = ((x($_GET,'dfrn_version')) ? $_GET['dfrn_version'] : '1.0');
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$destination_url = ((x($_GET,'destination_url')) ? $_GET['destination_url'] : '');
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$direction = (-1);
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if(strpos($dfrn_id,':') == 1) {
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$direction = intval(substr($dfrn_id,0,1));
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$dfrn_id = substr($dfrn_id,2);
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}
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if(($dfrn_id === '') && (! x($_POST,'dfrn_id')) && ($a->argc > 1)) {
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$o = get_feed_for($a, '*', $a->argv[1],$last_update);
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echo $o;
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killme();
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}
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if((x($type)) && ($type === 'profile')) {
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$sql_extra = '';
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switch($direction) {
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case (-1):
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$sql_extra = sprintf(" AND `dfrn-id` = '%s' ", dbesc($dfrn_id));
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$my_id = $dfrn_id;
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break;
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case 0:
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$sql_extra = sprintf(" AND `issued-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
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$my_id = '1:' . $dfrn_id;
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break;
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case 1:
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$sql_extra = sprintf(" AND `dfrn-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
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$my_id = '0:' . $dfrn_id;
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break;
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default:
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goaway($a->get_baseurl());
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break; // NOTREACHED
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}
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$r = q("SELECT `contact`.*, `user`.`nickname`
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FROM `contact` LEFT JOIN `user` ON `contact`.`uid` = `user`.`uid`
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WHERE `contact`.`blocked` = 0 AND `contact`.`pending` = 0 $sql_extra LIMIT 1");
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if(count($r)) {
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$s = fetch_url($r[0]['poll'] . '?dfrn_id=' . $my_id . '&type=profile-check');
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if(strlen($s)) {
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$xml = simplexml_load_string($s);
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if((int) $xml->status == 1) {
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$_SESSION['authenticated'] = 1;
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$_SESSION['visitor_id'] = $r[0]['id'];
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notice( t('Hi ') . $r[0]['name'] . EOL);
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// Visitors get 1 day session.
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$session_id = session_id();
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$expire = time() + 86400;
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q("UPDATE `session` SET `expire` = '%s' WHERE `sid` = '%s' LIMIT 1",
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dbesc($expire),
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dbesc($session_id)
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);
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}
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}
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$profile = $r[0]['nickname'];
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goaway((strlen($destination_url)) ? $destination_url : $a->get_baseurl() . '/profile/' . $profile);
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}
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goaway($a->get_baseurl());
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}
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if((x($type)) && ($type === 'profile-check')) {
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switch($direction) {
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case 1:
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$dfrn_id = '0:' . $dfrn_id;
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break;
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case 0:
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$dfrn_id = '1:' . $dfrn_id;
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break;
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default:
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break;
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}
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q("DELETE FROM `profile_check` WHERE `expire` < " . intval(time()));
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$r = q("SELECT * FROM `profile_check` WHERE `dfrn_id` = '%s' ORDER BY `expire` DESC",
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dbesc($dfrn_id));
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if(count($r)) {
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xml_status(1);
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return; // NOTREACHED
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}
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xml_status(0);
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return; // NOTREACHED
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}
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}
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function dfrn_poll_post(&$a) {
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$dfrn_id = $_POST['dfrn_id'];
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$challenge = $_POST['challenge'];
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$url = $_POST['url'];
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$direction = (-1);
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if(strpos($dfrn_id,':') == 1) {
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$direction = intval(substr($dfrn_id,0,1));
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$dfrn_id = substr($dfrn_id,2);
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}
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$r = q("SELECT * FROM `challenge` WHERE `dfrn-id` = '%s' AND `challenge` = '%s' LIMIT 1",
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dbesc($dfrn_id),
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dbesc($challenge)
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);
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if(! count($r))
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killme();
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$type = $r[0]['type'];
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$last_update = $r[0]['last_update'];
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$r = q("DELETE FROM `challenge` WHERE `dfrn-id` = '%s' AND `challenge` = '%s' LIMIT 1",
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dbesc($dfrn_id),
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dbesc($challenge)
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);
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$sql_extra = '';
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switch($direction) {
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case (-1):
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$sql_extra = sprintf(" AND `issued-id` = '%s' ", dbesc($dfrn_id));
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$my_id = $dfrn_id;
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break;
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case 0:
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$sql_extra = sprintf(" AND `issued-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
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$my_id = '1:' . $dfrn_id;
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break;
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case 1:
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$sql_extra = sprintf(" AND `dfrn-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
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$my_id = '0:' . $dfrn_id;
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break;
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default:
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goaway($a->get_baseurl());
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break; // NOTREACHED
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}
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$r = q("SELECT * FROM `contact` WHERE `blocked` = 0 AND `pending` = 0 $sql_extra LIMIT 1");
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if(! count($r))
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killme();
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$owner_uid = $r[0]['uid'];
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$contact_id = $r[0]['id'];
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if($type === 'reputation' && strlen($url)) {
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$r = q("SELECT * FROM `contact` WHERE `url` = '%s' AND `uid` = %d LIMIT 1",
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dbesc($url),
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intval($owner_uid)
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);
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$reputation = 0;
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$text = '';
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if(count($r)) {
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$reputation = $r[0]['rating'];
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$text = $r[0]['reason'];
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if($r[0]['id'] == $contact_id) { // inquiring about own reputation not allowed
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$reputation = 0;
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$text = '';
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}
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}
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echo "<?xml version=\"1.0\" encoding=\"UTF-8\"?>
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<reputation>
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<url>$url</url>
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<rating>$reputation</rating>
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<description>$text</description>
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</reputation>
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";
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killme();
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return; // NOTREACHED
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}
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else {
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$o = get_feed_for($a,$dfrn_id, $a->argv[1], $last_update, $direction);
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echo $o;
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killme();
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}
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}
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function dfrn_poll_content(&$a) {
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$dfrn_id = '';
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$type = 'data';
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if(x($_GET,'dfrn_id'))
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$dfrn_id = $_GET['dfrn_id'];
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if(x($_GET,'type'))
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$type = $_GET['type'];
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if(x($_GET,'last_update'))
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$last_update = $_GET['last_update'];
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$direction = (-1);
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if(strpos($dfrn_id,':') == 1) {
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$direction = intval(substr($dfrn_id,0,1));
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$dfrn_id = substr($dfrn_id,2);
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}
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if($dfrn_id != '') {
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// initial communication from external contact
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$hash = random_string();
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$status = 0;
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$r = q("DELETE FROM `challenge` WHERE `expire` < " . intval(time()));
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$r = q("INSERT INTO `challenge` ( `challenge`, `dfrn-id`, `expire` , `type`, `last_update` )
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VALUES( '%s', '%s', '%s', '%s', '%s' ) ",
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dbesc($hash),
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dbesc($dfrn_id),
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intval(time() + 60 ),
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dbesc($type),
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dbesc($last_update)
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);
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$sql_extra = '';
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switch($direction) {
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case (-1):
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$sql_extra = sprintf(" AND `issued-id` = '%s' ", dbesc($dfrn_id));
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$my_id = $dfrn_id;
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break;
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case 0:
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$sql_extra = sprintf(" AND `issued-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
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$my_id = '1:' . $dfrn_id;
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break;
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case 1:
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$sql_extra = sprintf(" AND `dfrn-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
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$my_id = '0:' . $dfrn_id;
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break;
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default:
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goaway($a->get_baseurl());
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break; // NOTREACHED
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}
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$r = q("SELECT * FROM `contact` WHERE `blocked` = 0 AND `pending` = 0 $sql_extra LIMIT 1");
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if(count($r)) {
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$challenge = '';
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$encrypted_id = '';
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$id_str = $my_id . '.' . mt_rand(1000,9999);
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if($r[0]['duplex'] && strlen($r[0]['pubkey'])) {
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openssl_public_encrypt($hash,$challenge,$r[0]['pubkey']);
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openssl_public_encrypt($id_str,$encrypted_id,$r[0]['pubkey']);
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}
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else {
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openssl_private_encrypt($hash,$challenge,$r[0]['prvkey']);
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openssl_private_encrypt($id_str,$encrypted_id,$r[0]['prvkey']);
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}
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$challenge = bin2hex($challenge);
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$encrypted_id = bin2hex($encrypted_id);
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}
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else {
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$status = 1;
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}
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echo '<?xml version="1.0" encoding="UTF-8"?><dfrn_poll><status>' .$status . '</status><dfrn_version>2.0</dfrn_version><dfrn_id>' . $encrypted_id . '</dfrn_id>'
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. '<challenge>' . $challenge . '</challenge></dfrn_poll>' . "\r\n" ;
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session_write_close();
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exit;
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}
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}
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