]> git.mxchange.org Git - friendica.git/blobdiff - mod/dfrn_poll.php
like, dislike, activity streams, etc.
[friendica.git] / mod / dfrn_poll.php
index 409ffce56cc2357e746841826e9481824638be94..66e19684429a7a96974a3f0b8028d9e3f62a8498 100644 (file)
@@ -14,48 +14,96 @@ function dfrn_poll_init(&$a) {
                $type = $a->config['dfrn_poll_type'] = $_GET['type'];
        if(x($_GET,'last_update'))
                $last_update = $a->config['dfrn_poll_last_update'] = $_GET['last_update'];
+       $dfrn_version    = ((x($_GET,'dfrn_version'))    ? $_GET['dfrn_version']    : '1.0');
+       $destination_url = ((x($_GET,'destination_url')) ? $_GET['destination_url'] : '');
 
-       if(($dfrn_id == '') && ($a->argc > 1)) {
-               $o = get_feed_for($a,'*', $a->argv[1],$last_update);
+
+       $direction = (-1);
+
+
+       if(strpos($dfrn_id,':') == 1) {
+               $direction = intval(substr($dfrn_id,0,1));
+               $dfrn_id = substr($dfrn_id,2);
+       }
+
+       if(($dfrn_id == '') && (! x($_POST,'dfrn_id')) && ($a->argc > 1)) {
+               $o = get_feed_for($a, '*', $a->argv[1],$last_update);
                echo $o;
                killme();
        }
 
        if((x($type)) && ($type == 'profile')) {
 
+               $sql_extra = '';
+               switch($direction) {
+                       case (-1):
+                               $sql_extra = sprintf(" AND `dfrn-id` = '%s' ", dbesc($dfrn_id));
+                               $my_id = $dfrn_id;
+                               break;
+                       case 0:
+                               $sql_extra = sprintf(" AND `issued-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
+                               $my_id = '1:' . $dfrn_id;
+                               break;
+                       case 1:
+                               $sql_extra = sprintf(" AND `dfrn-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
+                               $my_id = '0:' . $dfrn_id;
+                               break;
+                       default:
+                               goaway($a->get_baseurl());
+                               break; // NOTREACHED
+               }
+
                $r = q("SELECT `contact`.*, `user`.`nickname` 
                        FROM `contact` LEFT JOIN `user` ON `contact`.`uid` = `user`.`uid`
-                       WHERE `issued-id` = '%s' LIMIT 1",
-                       dbesc($dfrn_id));
+                       WHERE `contact`.`blocked` = 0 AND `contact`.`pending` = 0 $sql_extra LIMIT 1");
+               
                if(count($r)) {
-                       $s = fetch_url($r[0]['poll'] . '?dfrn_id=' . $dfrn_id . '&type=profile-check');
+
+                       $s = fetch_url($r[0]['poll'] . '?dfrn_id=' . $my_id . '&type=profile-check');
+
                        if(strlen($s)) {
+
                                $xml = simplexml_load_string($s);
+
                                if((int) $xml->status == 1) {
                                        $_SESSION['authenticated'] = 1;
                                        $_SESSION['visitor_id'] = $r[0]['id'];
-                                       $_SESSION['sysmsg'] .= "Hi {$r[0]['name']}" . EOL;
+                                       notice( t('Hi ') . $r[0]['name'] . EOL);
                                        // Visitors get 1 day session.
                                        $session_id = session_id();
                                        $expire = time() + 86400;
                                        q("UPDATE `session` SET `expire` = '%s' WHERE `sid` = '%s' LIMIT 1",
                                                dbesc($expire),
-                                               dbesc($session_id)); 
+                                               dbesc($session_id)
+                                       ); 
                                }
                        }
-                       $profile = ((strlen($r[0]['nickname'])) ? $r[0]['nickname'] : $r[0]['uid']);
-                       goaway($a->get_baseurl() . "/profile/$profile/visit");
+                       $profile = $r[0]['nickname'];
+                       goaway((strlen($destination_url)) ? $destination_url : $a->get_baseurl() . '/profile/' . $profile);
                }
                goaway($a->get_baseurl());
+
        }
 
        if((x($type)) && ($type == 'profile-check')) {
 
+               switch($direction) {
+                       case 1:
+                               $dfrn_id = '0:' . $dfrn_id;
+                               break;
+                       case 0:
+                               $dfrn_id = '1:' . $dfrn_id;
+                               break;
+                       default:
+                               break;
+               }
                q("DELETE FROM `profile_check` WHERE `expire` < " . intval(time()));
                $r = q("SELECT * FROM `profile_check` WHERE `dfrn_id` = '%s' ORDER BY `expire` DESC",
                        dbesc($dfrn_id));
-               if(count($r))
+               if(count($r)) {
                        xml_status(1);
+                       return; // NOTREACHED
+               }
                xml_status(0);
                return; // NOTREACHED
        }
@@ -71,6 +119,12 @@ function dfrn_poll_post(&$a) {
        $challenge = notags(trim($_POST['challenge']));
        $url = $_POST['url'];
 
+       $direction = (-1);
+       if(strpos($dfrn_id,':') == 1) {
+               $direction = intval(substr($dfrn_id,0,1));
+               $dfrn_id = substr($dfrn_id,2);
+       }
+
        $r = q("SELECT * FROM `challenge` WHERE `dfrn-id` = '%s' AND `challenge` = '%s' LIMIT 1",
                dbesc($dfrn_id),
                dbesc($challenge)
@@ -87,9 +141,29 @@ function dfrn_poll_post(&$a) {
        );
 
 
-       $r = q("SELECT * FROM `contact` WHERE `issued-id` = '%s' LIMIT 1",
-               dbesc($dfrn_id)
-       );
+       $sql_extra = '';
+       switch($direction) {
+               case (-1):
+                       $sql_extra = sprintf(" AND `issued-id` = '%s' ", dbesc($dfrn_id));
+                       $my_id = $dfrn_id;
+                       break;
+               case 0:
+                       $sql_extra = sprintf(" AND `issued-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
+                       $my_id = '1:' . $dfrn_id;
+                       break;
+               case 1:
+                       $sql_extra = sprintf(" AND `dfrn-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
+                       $my_id = '0:' . $dfrn_id;
+                       break;
+               default:
+                       goaway($a->get_baseurl());
+                       break; // NOTREACHED
+       }
+
+
+       $r = q("SELECT * FROM `contact` WHERE `blocked` = 0 AND `pending` = 0 $sql_extra LIMIT 1");
+
+
        if(! count($r))
                killme();
 
@@ -127,7 +201,7 @@ function dfrn_poll_post(&$a) {
        }
        else {
 
-               $o = get_feed_for($a,$dfrn_id, $a->argv[1], $last_update);
+               $o = get_feed_for($a,$dfrn_id, $a->argv[1], $last_update, $direction);
                echo $o;
                killme();
 
@@ -147,6 +221,12 @@ function dfrn_poll_content(&$a) {
        if(x($_GET,'last_update'))
                $last_update = $a->config['dfrn_poll_last_update'] = $_GET['last_update'];
 
+       $direction = (-1);
+       if(strpos($dfrn_id,':') == 1) {
+               $direction = intval(substr($dfrn_id,0,1));
+               $dfrn_id = substr($dfrn_id,2);
+       }
+
 
        if($dfrn_id != '') {
                // initial communication from external contact
@@ -165,33 +245,59 @@ function dfrn_poll_content(&$a) {
                        dbesc($last_update)
                );
 
-               $r = q("SELECT * FROM `contact` WHERE `issued-id` = '%s' AND `blocked` = 0 AND `pending` = 0 LIMIT 1",
-                       dbesc($_GET['dfrn_id']));
-               if((! count($r)) || (! strlen($r[0]['prvkey'])))
-                       $status = 1;
 
-               $challenge = '';
+               $sql_extra = '';
+               switch($direction) {
+                       case (-1):
+                               $sql_extra = sprintf(" AND `issued-id` = '%s' ", dbesc($dfrn_id));
+                               $my_id = $dfrn_id;
+                               break;
+                       case 0:
+                               $sql_extra = sprintf(" AND `issued-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
+                               $my_id = '1:' . $dfrn_id;
+                               break;
+                       case 1:
+                               $sql_extra = sprintf(" AND `dfrn-id` = '%s' AND `duplex` = 1 ", dbesc($dfrn_id));
+                               $my_id = '0:' . $dfrn_id;
+                               break;
+                       default:
+                               goaway($a->get_baseurl());
+                               break; // NOTREACHED
+               }
 
-               openssl_private_encrypt($hash,$challenge,$r[0]['prvkey']);
-               $challenge = bin2hex($challenge);
 
-               $encrypted_id = '';
-               $id_str = $_GET['dfrn_id'] . '.' . mt_rand(1000,9999);
 
-               openssl_private_encrypt($id_str,$encrypted_id,$r[0]['prvkey']);
-               $encrypted_id = bin2hex($encrypted_id);
 
+               $r = q("SELECT * FROM `contact` WHERE `blocked` = 0 AND `pending` = 0 $sql_extra LIMIT 1");
 
-               echo '<?xml version="1.0" encoding="UTF-8"?><dfrn_poll><status>' .$status . '</status><dfrn_id>' . $encrypted_id . '</dfrn_id>'
-                       . '<challenge>' . $challenge . '</challenge></dfrn_poll>' . "\r\n" ;
-               session_write_close();
-               exit;           
-       }
+               if(count($r)) {
 
+                       $challenge = '';
+                       $encrypted_id = '';
+                       $id_str = $my_id . '.' . mt_rand(1000,9999);
 
 
+                       if($r[0]['duplex'] && strlen($r[0]['pubkey'])) {
+                               openssl_public_encrypt($hash,$challenge,$r[0]['pubkey']);
+                               openssl_public_encrypt($id_str,$encrypted_id,$r[0]['pubkey']);
+                       }
+                       else {
+                               openssl_private_encrypt($hash,$challenge,$r[0]['prvkey']);
+                               openssl_private_encrypt($id_str,$encrypted_id,$r[0]['prvkey']);
+                       }
 
+                       $challenge = bin2hex($challenge);
+                       $encrypted_id = bin2hex($encrypted_id);
+               }
+               else {
+                       $status = 1;
+               }
 
+               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>'
+                       . '<challenge>' . $challenge . '</challenge></dfrn_poll>' . "\r\n" ;
+               session_write_close();
+               exit;           
+       }
 }