]> git.mxchange.org Git - friendica.git/blobdiff - mod/dfrn_poll.php
Friendicaland
[friendica.git] / mod / dfrn_poll.php
index 20fdc8f79c0159ea79759ed206e025961c8347e9..0d703dfb3122523a2b3484665e91ead80cef7e2d 100644 (file)
@@ -1,11 +1,14 @@
 <?php
 
+
+
 require_once('include/items.php');
 require_once('include/auth.php');
 
 
 function dfrn_poll_init(&$a) {
 
+
        $dfrn_id         = ((x($_GET,'dfrn_id'))         ? $_GET['dfrn_id']              : '');
        $type            = ((x($_GET,'type'))            ? $_GET['type']                 : 'data');
        $last_update     = ((x($_GET,'last_update'))     ? $_GET['last_update']          : '');
@@ -13,6 +16,7 @@ function dfrn_poll_init(&$a) {
        $challenge       = ((x($_GET,'challenge'))       ? $_GET['challenge']            : '');
        $sec             = ((x($_GET,'sec'))             ? $_GET['sec']                  : '');
        $dfrn_version    = ((x($_GET,'dfrn_version'))    ? (float) $_GET['dfrn_version'] : 2.0);
+       $perm            = ((x($_GET,'perm'))            ? $_GET['perm']                 : 'r');
 
        $direction = (-1);
 
@@ -22,10 +26,24 @@ function dfrn_poll_init(&$a) {
                $dfrn_id   = substr($dfrn_id,2);
        }
 
-       if(($dfrn_id === '') && (! x($_POST,'dfrn_id')) && ($a->argc > 1)) {
+       if(($dfrn_id === '') && (! x($_POST,'dfrn_id'))) {
+               if((get_config('system','block_public')) && (! local_user()) && (! remote_user())) {
+                       killme();
+               }
+
+               $user = '';
+               if($a->argc > 1) {
+                       $r = q("SELECT `hidewall`,`nickname` FROM `user` WHERE `user`.`nickname` = '%s' LIMIT 1",
+                               dbesc($a->argv[1])
+                       );
+                       if((! count($r)) || (count($r) && $r[0]['hidewall']))
+                               killme();
+                       $user = $r[0]['nickname'];
+               }
+               logger('dfrn_poll: public feed request from ' . $_SERVER['REMOTE_ADDR'] . ' for ' . $user);
                header("Content-type: application/atom+xml");
-               $o = get_feed_for($a, '*', $a->argv[1],$last_update);
-               echo $o;
+               echo get_feed_for($a, '', $user,$last_update);
                killme();
        }
 
@@ -46,7 +64,7 @@ function dfrn_poll_init(&$a) {
                                $my_id = '0:' . $dfrn_id;
                                break;
                        default:
-                               goaway($a->get_baseurl());
+                               goaway(z_root());
                                break; // NOTREACHED
                }
 
@@ -65,12 +83,20 @@ function dfrn_poll_init(&$a) {
 
                        if(strlen($s)) {
 
-                               $xml = simplexml_load_string($s);
+                               $xml = parse_xml_string($s);
 
                                if((int) $xml->status == 1) {
                                        $_SESSION['authenticated'] = 1;
+                                       if(! x($_SESSION,'remote'))
+                                               $_SESSION['remote'] = array();
+
+                                       $_SESSION['remote'][] = array('cid' => $r[0]['id'],'uid' => $r[0]['uid'],'url' => $r[0]['url']);
+
                                        $_SESSION['visitor_id'] = $r[0]['id'];
-                                       notice( $r[0]['username'] . t(' welcomes ') . $r[0]['name'] . EOL);
+                                       $_SESSION['visitor_home'] = $r[0]['url'];
+                                       $_SESSION['visitor_handle'] = $r[0]['addr'];
+                                       $_SESSION['visitor_visiting'] = $r[0]['uid'];
+                                       info( sprintf(t('%s welcomes %s'), $r[0]['username'] , $r[0]['name']) . EOL);
                                        // Visitors get 1 day session.
                                        $session_id = session_id();
                                        $expire = time() + 86400;
@@ -83,11 +109,11 @@ function dfrn_poll_init(&$a) {
                        $profile = $r[0]['nickname'];
                        goaway((strlen($destination_url)) ? $destination_url : $a->get_baseurl() . '/profile/' . $profile);
                }
-               goaway($a->get_baseurl());
+               goaway(z_root());
 
        }
 
-       if($type === 'profile-check') {
+       if($type === 'profile-check' && $dfrn_version < 2.2 ) {
 
                if((strlen($challenge)) && (strlen($sec))) {
 
@@ -96,18 +122,18 @@ function dfrn_poll_init(&$a) {
                                dbesc($sec)
                        );
                        if(! count($r)) {
-                               xml_status(3);
+                               xml_status(3, 'No ticket');
                                // NOTREACHED
                        }
                        $orig_id = $r[0]['dfrn_id'];
-                       if(strpos(':',$orig_id))
+                       if(strpos($orig_id, ':'))
                                $orig_id = substr($orig_id,2);
 
                        $c = q("SELECT * FROM `contact` WHERE `id` = %d LIMIT 1",
                                intval($r[0]['cid'])
                        );
                        if(! count($c)) {
-                               xml_status(3);
+                               xml_status(3, 'No profile');
                        }
                        $contact = $c[0];
 
@@ -131,9 +157,9 @@ function dfrn_poll_init(&$a) {
                                $final_dfrn_id = substr($final_dfrn_id,2);
 
                        if($final_dfrn_id != $orig_id) {
-
+                               logger('profile_check: ' . $final_dfrn_id . ' != ' . $orig_id, LOGGER_DEBUG);
                                // did not decode properly - cannot trust this site 
-                               xml_status(3);
+                               xml_status(3, 'Bad decryption');
                        }
 
                        header("Content-type: text/xml");
@@ -177,7 +203,69 @@ function dfrn_poll_post(&$a) {
        $dfrn_id      = ((x($_POST,'dfrn_id'))      ? $_POST['dfrn_id']              : '');
        $challenge    = ((x($_POST,'challenge'))    ? $_POST['challenge']            : '');
        $url          = ((x($_POST,'url'))          ? $_POST['url']                  : '');
+       $sec          = ((x($_POST,'sec'))          ? $_POST['sec']                  : '');
+       $ptype        = ((x($_POST,'type'))         ? $_POST['type']                 : '');
        $dfrn_version = ((x($_POST,'dfrn_version')) ? (float) $_POST['dfrn_version'] : 2.0);
+       $perm         = ((x($_POST,'perm'))         ? $_POST['perm']                 : 'r');
+          
+       if($ptype === 'profile-check') {
+
+               if((strlen($challenge)) && (strlen($sec))) {
+
+                       logger('dfrn_poll: POST: profile-check');
+                       q("DELETE FROM `profile_check` WHERE `expire` < " . intval(time()));
+                       $r = q("SELECT * FROM `profile_check` WHERE `sec` = '%s' ORDER BY `expire` DESC LIMIT 1",
+                               dbesc($sec)
+                       );
+                       if(! count($r)) {
+                               xml_status(3, 'No ticket');
+                               // NOTREACHED
+                       }
+                       $orig_id = $r[0]['dfrn_id'];
+                       if(strpos($orig_id, ':'))
+                               $orig_id = substr($orig_id,2);
+
+                       $c = q("SELECT * FROM `contact` WHERE `id` = %d LIMIT 1",
+                               intval($r[0]['cid'])
+                       );
+                       if(! count($c)) {
+                               xml_status(3, 'No profile');
+                       }
+                       $contact = $c[0];
+
+                       $sent_dfrn_id = hex2bin($dfrn_id);
+                       $challenge    = hex2bin($challenge);
+
+                       $final_dfrn_id = '';
+
+                       if(($contact['duplex']) && strlen($contact['prvkey'])) {
+                               openssl_private_decrypt($sent_dfrn_id,$final_dfrn_id,$contact['prvkey']);
+                               openssl_private_decrypt($challenge,$decoded_challenge,$contact['prvkey']);
+                       }
+                       else {
+                               openssl_public_decrypt($sent_dfrn_id,$final_dfrn_id,$contact['pubkey']);
+                               openssl_public_decrypt($challenge,$decoded_challenge,$contact['pubkey']);
+                       }
+
+                       $final_dfrn_id = substr($final_dfrn_id, 0, strpos($final_dfrn_id, '.'));
+
+                       if(strpos($final_dfrn_id,':') == 1)
+                               $final_dfrn_id = substr($final_dfrn_id,2);
+
+                       if($final_dfrn_id != $orig_id) {
+                               logger('profile_check: ' . $final_dfrn_id . ' != ' . $orig_id, LOGGER_DEBUG);
+                               // did not decode properly - cannot trust this site 
+                               xml_status(3, 'Bad decryption');
+                       }
+
+                       header("Content-type: text/xml");
+                       echo "<?xml version=\"1.0\" encoding=\"UTF-8\"?><dfrn_poll><status>0</status><challenge>$decoded_challenge</challenge><sec>$sec</sec></dfrn_poll>";
+                       killme();
+                       // NOTREACHED
+               }
+
+       }
 
        $direction    = (-1);
        if(strpos($dfrn_id,':') == 1) {
@@ -218,7 +306,7 @@ function dfrn_poll_post(&$a) {
                        $my_id = '0:' . $dfrn_id;
                        break;
                default:
-                       goaway($a->get_baseurl());
+                       goaway(z_root());
                        break; // NOTREACHED
        }
 
@@ -229,6 +317,7 @@ function dfrn_poll_post(&$a) {
        if(! count($r))
                killme();
 
+       $contact = $r[0];
        $owner_uid = $r[0]['uid'];
        $contact_id = $r[0]['id']; 
 
@@ -262,6 +351,23 @@ function dfrn_poll_post(&$a) {
                // NOTREACHED
        }
        else {
+
+               // Update the writable flag if it changed               
+               logger('dfrn_poll: post request feed: ' . print_r($_POST,true),LOGGER_DATA);
+               if($dfrn_version >= 2.21) {
+                       if($perm === 'rw')
+                               $writable = 1;
+                       else
+                               $writable = 0;
+
+                       if($writable !=  $contact['writable']) {
+                               q("UPDATE `contact` SET `writable` = %d WHERE `id` = %d LIMIT 1",
+                                       intval($writable),
+                                       intval($contact_id)
+                               );
+                       }
+               }
+                               
                header("Content-type: application/atom+xml");
                $o = get_feed_for($a,$dfrn_id, $a->argv[1], $last_update, $direction);
                echo $o;
@@ -278,6 +384,7 @@ function dfrn_poll_content(&$a) {
        $destination_url = ((x($_GET,'destination_url')) ? $_GET['destination_url']      : '');
        $sec             = ((x($_GET,'sec'))             ? $_GET['sec']                  : '');
        $dfrn_version    = ((x($_GET,'dfrn_version'))    ? (float) $_GET['dfrn_version'] : 2.0);
+       $perm            = ((x($_GET,'perm'))            ? $_GET['perm']                 : 'r');
 
        $direction = (-1);
        if(strpos($dfrn_id,':') == 1) {
@@ -322,15 +429,17 @@ function dfrn_poll_content(&$a) {
                                $my_id = '0:' . $dfrn_id;
                                break;
                        default:
-                               goaway($a->get_baseurl());
+                               goaway(z_root());
                                break; // NOTREACHED
                }
 
+               $nickname = $a->argv[1];
+
                $r = q("SELECT `contact`.*, `user`.`username`, `user`.`nickname` 
                        FROM `contact` LEFT JOIN `user` ON `contact`.`uid` = `user`.`uid`
                        WHERE `contact`.`blocked` = 0 AND `contact`.`pending` = 0 
                        AND `user`.`nickname` = '%s' $sql_extra LIMIT 1",
-                       dbesc($a->argv[1])
+                       dbesc($nickname)
                );
 
                if(count($r)) {
@@ -339,7 +448,7 @@ function dfrn_poll_content(&$a) {
                        $encrypted_id = '';
                        $id_str = $my_id . '.' . mt_rand(1000,9999);
 
-                       if($r[0]['duplex'] && strlen($r[0]['pubkey'])) {
+                       if(($r[0]['duplex'] && strlen($r[0]['pubkey'])) || (! strlen($r[0]['prvkey']))) {
                                openssl_public_encrypt($hash,$challenge,$r[0]['pubkey']);
                                openssl_public_encrypt($id_str,$encrypted_id,$r[0]['pubkey']);
                        }
@@ -353,24 +462,56 @@ function dfrn_poll_content(&$a) {
                }
                else {
                        $status = 1;
+                       $challenge = '';
+                       $encrypted_id = '';
                }
 
                if(($type === 'profile') && (strlen($sec))) {
+
                        // URL reply
 
-                       $s = fetch_url($r[0]['poll'] 
-                               . '?dfrn_id=' . $encrypted_id 
-                               . '&type=profile-check'
-                               . '&dfrn_version=' . DFRN_PROTOCOL_VERSION
-                               . '&challenge=' . $challenge
-                               . '&sec=' . $sec
-                       );
+                       if($dfrn_version < 2.2) {
+                               $s = fetch_url($r[0]['poll'] 
+                                       . '?dfrn_id=' . $encrypted_id 
+                                       . '&type=profile-check'
+                                       . '&dfrn_version=' . DFRN_PROTOCOL_VERSION
+                                       . '&challenge=' . $challenge
+                                       . '&sec=' . $sec
+                               );
+                       }
+                       else {
+                               $s = post_url($r[0]['poll'], array(
+                                       'dfrn_id' => $encrypted_id,
+                                       'type' => 'profile-check',
+                                       'dfrn_version' => DFRN_PROTOCOL_VERSION,
+                                       'challenge' => $challenge,
+                                       'sec' => $sec
+                               ));
+                       }
+                       
+                       $profile = ((count($r) && $r[0]['nickname']) ? $r[0]['nickname'] : $nickname);
+
+                       switch($destination_url) {
+                               case 'profile':
+                                       $dest = $a->get_baseurl() . '/profile/' . $profile . '?tab=profile';
+                                       break;
+                               case 'photos':
+                                       $dest = $a->get_baseurl() . '/photos/' . $profile;
+                                       break;
+                               case 'status':
+                               case '':
+                                       $dest = $a->get_baseurl() . '/profile/' . $profile;
+                                       break;          
+                               default:
+                                       $dest = $destination_url;
+                                       break;
+                       }
 
                        logger("dfrn_poll: sec profile: " . $s, LOGGER_DATA);
 
                        if(strlen($s) && strstr($s,'<?xml')) {
 
-                               $xml = simplexml_load_string($s);
+                               $xml = parse_xml_string($s);
 
                                logger('dfrn_poll: profile: parsed xml: ' . print_r($xml,true), LOGGER_DATA);
 
@@ -380,8 +521,13 @@ function dfrn_poll_content(&$a) {
                                
                                if(((int) $xml->status == 0) && ($xml->challenge == $hash)  && ($xml->sec == $sec)) {
                                        $_SESSION['authenticated'] = 1;
+                                       if(! x($_SESSION,'remote'))
+                                               $_SESSION['remote'] = array();
+                                       $_SESSION['remote'][] = array('cid' => $r[0]['id'],'uid' => $r[0]['uid'],'url' => $r[0]['url']);
                                        $_SESSION['visitor_id'] = $r[0]['id'];
-                                       notice( $r[0]['username'] . t(' welcomes ') . $r[0]['name'] . EOL);
+                                       $_SESSION['visitor_home'] = $r[0]['url'];
+                                       $_SESSION['visitor_visiting'] = $r[0]['uid'];
+                                       info( sprintf(t('%s welcomes %s'), $r[0]['username'] , $r[0]['name']) . EOL);
                                        // Visitors get 1 day session.
                                        $session_id = session_id();
                                        $expire = time() + 86400;
@@ -390,10 +536,10 @@ function dfrn_poll_content(&$a) {
                                                dbesc($session_id)
                                        ); 
                                }
-                               $profile = $r[0]['nickname'];
-                               goaway((strlen($destination_url)) ? $destination_url : $a->get_baseurl() . '/profile/' . $profile);
+                       
+                               goaway($dest);
                        }
-                       goaway($a->get_baseurl());
+                       goaway($dest);
                        // NOTREACHED
 
                }