mod/dfrn_poll.php

   1 <?php
   2
   3 require_once('include/items.php');
   4 require_once('include/auth.php');
   5
   6
   7 function dfrn_poll_init(&$a) {
   8
   9         if(x($_GET,'dfrn_id'))
  10                 $dfrn_id = $a->config['dfrn_poll_dfrn_id'] = $_GET['dfrn_id'];
  11         if(x($_GET,'type'))
  12                 $type = $a->config['dfrn_poll_type'] = $_GET['type'];
  13         if(x($_GET,'last_update'))
  14                 $last_update = $a->config['dfrn_poll_last_update'] = $_GET['last_update'];
  15
  16
  17
  18         if(! x($dfrn_id))
  19                 return;
  20
  21
  22         if(($dfrn_id == '*') && ($a->argc > 1) && (intval($a->argv[1]))) {
  23                 $o = get_feed_for($a,'*', $a->argv[1],$last_update);
  24                 echo $o;
  25                 killme();
  26         }
  27
  28         if((x($type)) && ($type == 'profile')) {
  29
  30                 $r = q("SELECT `contact`.*, `user`.`nickname`
  31                         FROM `contact` LEFT JOIN `user` ON `contact`.`uid` = `user`.`uid`
  32                         WHERE `issued-id` = '%s' LIMIT 1",
  33                         dbesc($dfrn_id));
  34                 if(count($r)) {
  35                         $s = fetch_url($r[0]['poll'] . '?dfrn_id=' . $dfrn_id . '&type=profile-check');
  36                         if(strlen($s)) {
  37                                 $xml = simplexml_load_string($s);
  38                                 if((int) $xml->status == 1) {
  39                                         $_SESSION['authenticated'] = 1;
  40                                         $_SESSION['visitor_id'] = $r[0]['id'];
  41                                         $_SESSION['sysmsg'] .= "Hi {$r[0]['name']}" . EOL;
  42                                         // Visitors get 1 day session.
  43                                         $session_id = session_id();
  44                                         $expire = time() + 86400;
  45                                         q("UPDATE `session` SET `expire` = '%s' WHERE `sid` = '%s' LIMIT 1",
  46                                                 dbesc($expire),
  47                                                 dbesc($session_id));
  48                                 }
  49                         }
  50                         $profile = ((strlen($r[0]['nickname'])) ? $r[0]['nickname'] : $r[0]['uid']);
  51                         goaway($a->get_baseurl() . "/profile/$profile/visit");
  52                 }
  53                 goaway($a->get_baseurl());
  54         }
  55
  56         if((x($type)) && ($type == 'profile-check')) {
  57
  58                 q("DELETE FROM `profile_check` WHERE `expire` < " . intval(time()));
  59                 $r = q("SELECT * FROM `profile_check` WHERE `dfrn_id` = '%s' ORDER BY `expire` DESC",
  60                         dbesc($dfrn_id));
  61                 if(count($r))
  62                         xml_status(1);
  63                 xml_status(0);
  64                 return; // NOTREACHED
  65         }
  66
  67
  68 }
  69
  70
  71
  72 function dfrn_poll_post(&$a) {
  73
  74         $dfrn_id = notags(trim($_POST['dfrn_id']));
  75         $challenge = notags(trim($_POST['challenge']));
  76         $url = $_POST['url'];
  77
  78         $r = q("SELECT * FROM `challenge` WHERE `dfrn-id` = '%s' AND `challenge` = '%s' LIMIT 1",
  79                 dbesc($dfrn_id),
  80                 dbesc($challenge)
  81         );
  82         if(! count($r))
  83                 killme();
  84
  85         $type = $r[0]['type'];
  86         $last_update = $r[0]['last_update'];
  87
  88         $r = q("DELETE FROM `challenge` WHERE `dfrn-id` = '%s' AND `challenge` = '%s' LIMIT 1",
  89                 dbesc($dfrn_id),
  90                 dbesc($challenge)
  91         );
  92
  93
  94         $r = q("SELECT * FROM `contact` WHERE `issued-id` = '%s' LIMIT 1",
  95                 dbesc($dfrn_id)
  96         );
  97         if(! count($r))
  98                 killme();
  99
 100         $owner_uid = $r[0]['uid'];
 101         $contact_id = $r[0]['id'];
 102
 103
 104         if($type == 'reputation' && strlen($url)) {
 105                 $r = q("SELECT * FROM `contact` WHERE `url` = '%s' AND `uid` = %d LIMIT 1",
 106                         dbesc($url),
 107                         intval($owner_uid)
 108                 );
 109                 $reputation = 0;
 110                 $text = '';
 111
 112                 if(count($r)) {
 113                         $reputation = $r[0]['rating'];
 114                         $text = $r[0]['reason'];
 115
 116                         if($r[0]['id'] == $contact_id) {        // inquiring about own reputation not allowed
 117                                 $reputation = 0;
 118                                 $text = '';
 119                         }
 120                 }
 121
 122                 echo "<?xml version=\"1.0\" encoding=\"UTF-8\"?>
 123                 <reputation>
 124                         <url>$url</url>
 125                         <rating>$reputation</rating>
 126                         <description>$text</description>
 127                 </reputation>
 128                 ";
 129                 killme();
 130                 return; // NOTREACHED
 131         }
 132         else {
 133
 134                 $o = get_feed_for($a,$dfrn_id, $a->argv[1], $last_update);
 135                 echo $o;
 136                 killme();
 137
 138         }
 139 }
 140
 141 function dfrn_poll_content(&$a) {
 142
 143         if(x($_GET,'dfrn_id'))
 144                 $dfrn_id = $a->config['dfrn_poll_dfrn_id'] = $_GET['dfrn_id'];
 145         if(x($_GET,'type'))
 146                 $type = $a->config['dfrn_poll_type'] = $_GET['type'];
 147         if(x($_GET,'last_update'))
 148                 $last_update = $a->config['dfrn_poll_last_update'] = $_GET['last_update'];
 149
 150
 151         if($dfrn_id != '*') {
 152                 // initial communication from external contact
 153                 $hash = random_string();
 154
 155                 $status = 0;
 156
 157                 $r = q("DELETE FROM `challenge` WHERE `expire` < " . intval(time()));
 158
 159                 $r = q("INSERT INTO `challenge` ( `challenge`, `dfrn-id`, `expire` , `type`, `last_update` )
 160                         VALUES( '%s', '%s', '%s', '%s', '%s' ) ",
 161                         dbesc($hash),
 162                         dbesc(notags(trim($_GET['dfrn_id']))),
 163                         intval(time() + 60 ),
 164                         dbesc($type),
 165                         dbesc($last_update)
 166                 );
 167
 168                 $r = q("SELECT * FROM `contact` WHERE `issued-id` = '%s' AND `blocked` = 0 AND `pending` = 0 LIMIT 1",
 169                         dbesc($_GET['dfrn_id']));
 170                 if((! count($r)) || (! strlen($r[0]['prvkey'])))
 171                         $status = 1;
 172
 173                 $challenge = '';
 174
 175                 openssl_private_encrypt($hash,$challenge,$r[0]['prvkey']);
 176                 $challenge = bin2hex($challenge);
 177                 echo '<?xml version="1.0" encoding="UTF-8"?><dfrn_poll><status>' .$status . '</status><dfrn_id>' . $_GET['dfrn_id'] . '</dfrn_id>'
 178                         . '<challenge>' . $challenge . '</challenge></dfrn_poll>' . "\r\n" ;
 179                 session_write_close();
 180                 exit;
 181         }
 182
 183
 184
 185
 186
 187 }
 188
 189