mod/dfrn_notify.php

   1 <?php
   2
   3 require_once('simplepie/simplepie.inc');
   4 require_once('include/items.php');
   5
   6
   7 function dfrn_notify_post(&$a) {
   8
   9         $dfrn_id = notags(trim($_POST['dfrn_id']));
  10         $challenge = notags(trim($_POST['challenge']));
  11         $data = $_POST['data'];
  12         $r = q("SELECT * FROM `challenge` WHERE `dfrn-id` = '%s' AND `challenge` = '%s' LIMIT 1",
  13                 dbesc($dfrn_id),
  14                 dbesc($challenge)
  15         );
  16         if(! count($r))
  17                 xml_status(3);
  18
  19         $r = q("DELETE FROM `challenge` WHERE `dfrn-id` = '%s' AND `challenge` = '%s' LIMIT 1",
  20                 dbesc($dfrn_id),
  21                 dbesc($challenge)
  22         );
  23
  24         // find the local user who owns this relationship.
  25
  26         $r = q("SELECT `id`, `uid` FROM `contact` WHERE `issued-id` = '%s' LIMIT 1",
  27                 dbesc($dfrn_id)
  28         );
  29         if(! count($r)) {
  30                 xml_status(3);
  31                 return; //NOTREACHED
  32         }
  33
  34         // We aren't really interested in anything this person has to say. But be polite and make them
  35         // think we're listening intently by acknowledging receipt of their communications - which we quietly ignore.
  36
  37         if($r[0]['readonly']) {
  38                 xml_status(0);
  39                 return; //NOTREACHED
  40         }
  41
  42         $importer = $r[0];
  43
  44         $feed = new SimplePie();
  45         $feed->set_raw_data($data);
  46         $feed->enable_order_by_date(false);
  47         $feed->init();
  48
  49         $ismail = false;
  50
  51         $rawmail = $feed->get_feed_tags( NAMESPACE_DFRN, 'mail' );
  52         if(isset($rawmail[0]['child'][NAMESPACE_DFRN])) {
  53                 $ismail = true;
  54                 $base = $rawmail[0]['child'][NAMESPACE_DFRN];
  55
  56                 $msg = array();
  57                 $msg['uid'] = $importer['uid'];
  58                 $msg['from-name'] = notags(unxmlify($base['sender'][0]['child'][NAMESPACE_DFRN]['name'][0]['data']));
  59                 $msg['from-photo'] = notags(unxmlify($base['sender'][0]['child'][NAMESPACE_DFRN]['avatar'][0]['data']));
  60                 $msg['from-url'] = notags(unxmlify($base['sender'][0]['child'][NAMESPACE_DFRN]['avatar'][0]['data']));
  61                 $msg['contact-id'] = $importer['id'];
  62                 $msg['title'] = notags(unxmlify($base['subject'][0]['data']));
  63                 $msg['body'] = escape_tags(unxmlify($base['content'][0]['data']));
  64                 $msg['delivered'] = 1;
  65                 $msg['seen'] = 0;
  66                 $msg['replied'] = 0;
  67                 $msg['uri'] = notags(unxmlify($base['id'][0]['data']));
  68                 $msg['parent-uri'] = notags(unxmlify($base['in-reply-to'][0]['data']));
  69                 $msg['created'] = datetime_convert(notags(unxmlify('UTC','UTC',$base['sentdate'][0]['data'])));
  70
  71                 $r = q("INSERT INTO `mail` (`" . implode("`, `", array_keys($msg))
  72                         . "`) VALUES ('" . implode("', '", array_values($msg)) . "')" );
  73
  74                 // send email notification if requested.
  75
  76                 xml_status(0);
  77                 return;
  78         }
  79
  80         foreach($feed->get_items() as $item) {
  81
  82                 $deleted = false;
  83
  84                 $rawdelete = $item->get_item_tags("http://purl.org/atompub/tombstones/1.0", 'deleted-entry');
  85                 if(isset($rawdelete[0]['attribs']['']['ref'])) {
  86                         $uri = $rawthread[0]['attribs']['']['ref'];
  87                         $deleted = true;
  88                         if(isset($rawdelete[0]['attribs']['']['when'])) {
  89                                 $when = $rawthread[0]['attribs']['']['when'];
  90                                 $when = datetime_convert('UTC','UTC', $when, 'Y-m-d H:i:s');
  91                         }
  92                         else
  93                                 $when = datetime_convert('UTC','UTC','now','Y-m-d H:i:s');
  94                 }
  95                 if($deleted) {
  96                         $r = q("SELECT * FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
  97                                 dbesc($uri),
  98                                 intval($importer['uid'])
  99                         );
 100                         if(count($r)) {
 101                                 if($r[0]['uri'] == $r[0]['parent-uri']) {
 102                                         $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s'
 103                                                 WHERE `parent-uri` = '%s'",
 104                                                 dbesc($when),
 105                                                 dbesc($r[0]['uri'])
 106                                         );
 107                                 }
 108                                 else {
 109                                         $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s'
 110                                                 WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 111                                                 dbesc($when),
 112                                                 dbesc($uri),
 113                                                 intval($importer['uid'])
 114                                         );
 115                                 }
 116                         }
 117                         continue;
 118                 }
 119
 120                 $is_reply = false;
 121                 $item_id = $item->get_id();
 122                 $rawthread = $item->get_item_tags("http://purl.org/syndication/thread/1.0",'in-reply-to');
 123                 if(isset($rawthread[0]['attribs']['']['ref'])) {
 124                         $is_reply = true;
 125                         $parent_uri = $rawthread[0]['attribs']['']['ref'];
 126                 }
 127
 128
 129                 if($is_reply) {
 130                         if($feed->get_item_quantity() == 1) {
 131                                 // remote reply to our post. Import and then notify everybody else.
 132                                 $datarray = get_atom_elements($item);
 133                                 $urn = explode(':',$parent_urn);
 134                                 $datarray['type'] = 'remote-comment';
 135                                 $datarray['parent-uri'] = $parent_uri;
 136                                 $datarray['uid'] = $importer['uid'];
 137                                 $datarray['contact-id'] = $importer['id'];
 138                                 $posted_id = post_remote($a,$datarray);
 139
 140                                 $r = q("SELECT `parent` FROM `item` WHERE `id` = %d AND `uid` = %d LIMIT 1",
 141                                         intval($posted_id),
 142                                         intval($importer['uid'])
 143                                 );
 144                                 if(count($r)) {
 145                                         $r1 = q("UPDATE `item` SET `last-child` = 0 WHERE `uid` = %d AND `parent` = %d",
 146                                                 intval($importer['uid']),
 147                                                 intval($r[0]['parent'])
 148                                         );
 149                                 }
 150                                 $r2 = q("UPDATE `item` SET `last-child` = 1 WHERE `uid` = %d AND `id` = %d LIMIT 1",
 151                                                 intval($importer['uid']),
 152                                                 intval($posted_id)
 153                                 );
 154
 155                                 $url = $a->get_baseurl();
 156
 157                                 proc_close(proc_open("php include/notifier.php $url comment-import $posted_id > remote-notify.log &", array(),$foo));
 158
 159                                 xml_status(0);
 160                                 return;
 161
 162                         }
 163                         else {
 164                                 // regular comment that is part of this total conversation. Have we seen it? If not, import it.
 165
 166                                 $item_id = $item->get_id();
 167
 168                                 $r = q("SELECT `uid`, `last-child`, `edited` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 169                                         dbesc($item_id),
 170                                         intval($importer['uid'])
 171                                 );
 172                                 // FIXME update content if 'updated' changes
 173                                 if(count($r)) {
 174                                         $allow = $item->get_item_tags('http://purl.org/macgirvin/dfrn/1.0','comment-allow');
 175                                         if($allow && $allow[0]['data'] != $r[0]['last-child']) {
 176                                                 $r = q("UPDATE `item` SET `last-child` = %d WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 177                                                         intval($allow[0]['data']),
 178                                                         dbesc($item_id),
 179                                                         intval($importer['uid'])
 180                                                 );
 181                                         }
 182                                         continue;
 183                                 }
 184                                 $datarray = get_atom_elements($item);
 185                                 $datarray['parent-uri'] = $parent_uri;
 186                                 $datarray['uid'] = $importer['uid'];
 187                                 $datarray['contact-id'] = $importer['id'];
 188                                 $r = post_remote($a,$datarray);
 189                                 continue;
 190                         }
 191                 }
 192                 else {
 193                         // Head post of a conversation. Have we seen it? If not, import it.
 194
 195                         $item_id = $item->get_id();
 196                         $r = q("SELECT `uid`, `last-child`, `edited` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 197                                 dbesc($item_id),
 198                                 intval($importer['uid'])
 199                         );
 200                         if(count($r)) {
 201                                 $allow = $item->get_item_tags('http://purl.org/macgirvin/dfrn/1.0','comment-allow');
 202                                 if($allow && $allow[0]['data'] != $r[0]['last-child']) {
 203                                         $r = q("UPDATE `item` SET `last-child` = %d WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 204                                                 intval($allow[0]['data']),
 205                                                 dbesc($item_id),
 206                                                 intval($importer['uid'])
 207                                         );
 208                                 }
 209                                 continue;
 210                         }
 211
 212
 213                         $datarray = get_atom_elements($item);
 214                         $datarray['parent-uri'] = $item_id;
 215                         $datarray['uid'] = $importer['uid'];
 216                         $datarray['contact-id'] = $importer['id'];
 217                         $r = post_remote($a,$datarray);
 218                         continue;
 219
 220                 }
 221
 222         }
 223
 224         xml_status(0);
 225         killme();
 226
 227 }
 228
 229
 230 function dfrn_notify_content(&$a) {
 231
 232         if(x($_GET,'dfrn_id')) {
 233                 // initial communication from external contact
 234                 $hash = random_string();
 235
 236                 $status = 0;
 237
 238                 $r = q("DELETE FROM `challenge` WHERE `expire` < " . intval(time()));
 239
 240                 $r = q("INSERT INTO `challenge` ( `challenge`, `dfrn-id`, `expire` )
 241                         VALUES( '%s', '%s', '%s') ",
 242                         dbesc($hash),
 243                         dbesc(notags(trim($_GET['dfrn_id']))),
 244                         intval(time() + 60 )
 245                 );
 246
 247                 $r = q("SELECT * FROM `contact` WHERE `issued-id` = '%s' AND `blocked` = 0 AND `pending` = 0 LIMIT 1",
 248                         dbesc($_GET['dfrn_id']));
 249                 if((! count($r)) || (! strlen($r[0]['prvkey'])))
 250                         $status = 1;
 251
 252                 $challenge = '';
 253
 254                 openssl_private_encrypt($hash,$challenge,$r[0]['prvkey']);
 255                 $challenge = bin2hex($challenge);
 256
 257                 $encrypted_id = '';
 258                 $id_str = $_GET['dfrn_id'] . '.' . mt_rand(1000,9999);
 259
 260                 openssl_private_encrypt($id_str,$encrypted_id,$r[0]['prvkey']);
 261                 $encrypted_id = bin2hex($encrypted_id);
 262
 263                 echo '<?xml version="1.0" encoding="UTF-8"?><dfrn_notify><status>' .$status . '</status><dfrn_id>' . $encrypted_id . '</dfrn_id>'
 264                         . '<challenge>' . $challenge . '</challenge></dfrn_notify>' . "\r\n" ;
 265                 session_write_close();
 266                 exit;
 267
 268         }
 269
 270 }