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         $photo_time = $feed->get_feed_tags( NAMESPACE_DFRN, 'icon-updated');
  51         if($photo_time)
  52                 $avatar_update = $photo_time[0]['data'];
  53
  54         $rawmail = $feed->get_feed_tags( NAMESPACE_DFRN, 'mail' );
  55         if(isset($rawmail[0]['child'][NAMESPACE_DFRN])) {
  56                 $ismail = true;
  57                 $base = $rawmail[0]['child'][NAMESPACE_DFRN];
  58
  59                 $msg = array();
  60                 $msg['uid'] = $importer['uid'];
  61                 $msg['from-name'] = notags(unxmlify($base['sender'][0]['child'][NAMESPACE_DFRN]['name'][0]['data']));
  62                 $msg['from-photo'] = notags(unxmlify($base['sender'][0]['child'][NAMESPACE_DFRN]['avatar'][0]['data']));
  63                 $msg['from-url'] = notags(unxmlify($base['sender'][0]['child'][NAMESPACE_DFRN]['uri'][0]['data']));
  64                 $msg['contact-id'] = $importer['id'];
  65                 $msg['title'] = notags(unxmlify($base['subject'][0]['data']));
  66                 $msg['body'] = escape_tags(unxmlify($base['content'][0]['data']));
  67                 $msg['delivered'] = 1;
  68                 $msg['seen'] = 0;
  69                 $msg['replied'] = 0;
  70                 $msg['uri'] = notags(unxmlify($base['id'][0]['data']));
  71                 $msg['parent-uri'] = notags(unxmlify($base['in-reply-to'][0]['data']));
  72                 $msg['created'] = datetime_convert(notags(unxmlify('UTC','UTC',$base['sentdate'][0]['data'])));
  73
  74                 $r = q("INSERT INTO `mail` (`" . implode("`, `", array_keys($msg))
  75                         . "`) VALUES ('" . implode("', '", array_values($msg)) . "')" );
  76
  77                 // send email notification if requested.
  78
  79                 xml_status(0);
  80                 return;
  81         }
  82
  83         foreach($feed->get_items() as $item) {
  84
  85                 $deleted = false;
  86
  87                 $rawdelete = $item->get_item_tags("http://purl.org/atompub/tombstones/1.0", 'deleted-entry');
  88                 if(isset($rawdelete[0]['attribs']['']['ref'])) {
  89                         $uri = $rawthread[0]['attribs']['']['ref'];
  90                         $deleted = true;
  91                         if(isset($rawdelete[0]['attribs']['']['when'])) {
  92                                 $when = $rawthread[0]['attribs']['']['when'];
  93                                 $when = datetime_convert('UTC','UTC', $when, 'Y-m-d H:i:s');
  94                         }
  95                         else
  96                                 $when = datetime_convert('UTC','UTC','now','Y-m-d H:i:s');
  97                 }
  98                 if($deleted) {
  99                         $r = q("SELECT * FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 100                                 dbesc($uri),
 101                                 intval($importer['uid'])
 102                         );
 103                         if(count($r)) {
 104                                 if($r[0]['uri'] == $r[0]['parent-uri']) {
 105                                         $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s'
 106                                                 WHERE `parent-uri` = '%s'",
 107                                                 dbesc($when),
 108                                                 dbesc($r[0]['uri'])
 109                                         );
 110                                 }
 111                                 else {
 112                                         $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s'
 113                                                 WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 114                                                 dbesc($when),
 115                                                 dbesc($uri),
 116                                                 intval($importer['uid'])
 117                                         );
 118                                 }
 119                         }
 120                         continue;
 121                 }
 122
 123                 $is_reply = false;
 124                 $item_id = $item->get_id();
 125                 $rawthread = $item->get_item_tags("http://purl.org/syndication/thread/1.0",'in-reply-to');
 126                 if(isset($rawthread[0]['attribs']['']['ref'])) {
 127                         $is_reply = true;
 128                         $parent_uri = $rawthread[0]['attribs']['']['ref'];
 129                 }
 130
 131
 132                 if($is_reply) {
 133                         if($feed->get_item_quantity() == 1) {
 134                                 // remote reply to our post. Import and then notify everybody else.
 135                                 $datarray = get_atom_elements($item);
 136                                 $urn = explode(':',$parent_urn);
 137                                 $datarray['type'] = 'remote-comment';
 138                                 $datarray['parent-uri'] = $parent_uri;
 139                                 $datarray['uid'] = $importer['uid'];
 140                                 $datarray['contact-id'] = $importer['id'];
 141                                 $posted_id = post_remote($a,$datarray);
 142
 143                                 $r = q("SELECT `parent` FROM `item` WHERE `id` = %d AND `uid` = %d LIMIT 1",
 144                                         intval($posted_id),
 145                                         intval($importer['uid'])
 146                                 );
 147                                 if(count($r)) {
 148                                         $r1 = q("UPDATE `item` SET `last-child` = 0 WHERE `uid` = %d AND `parent` = %d",
 149                                                 intval($importer['uid']),
 150                                                 intval($r[0]['parent'])
 151                                         );
 152                                 }
 153                                 $r2 = q("UPDATE `item` SET `last-child` = 1 WHERE `uid` = %d AND `id` = %d LIMIT 1",
 154                                                 intval($importer['uid']),
 155                                                 intval($posted_id)
 156                                 );
 157
 158                                 $url = $a->get_baseurl();
 159
 160                                 proc_close(proc_open("php include/notifier.php $url comment-import $posted_id > remote-notify.log &", array(),$foo));
 161
 162                                 xml_status(0);
 163                                 return;
 164
 165                         }
 166                         else {
 167                                 // regular comment that is part of this total conversation. Have we seen it? If not, import it.
 168
 169                                 $item_id = $item->get_id();
 170
 171                                 $r = q("SELECT `uid`, `last-child`, `edited` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 172                                         dbesc($item_id),
 173                                         intval($importer['uid'])
 174                                 );
 175                                 // FIXME update content if 'updated' changes
 176                                 if(count($r)) {
 177                                         $allow = $item->get_item_tags('http://purl.org/macgirvin/dfrn/1.0','comment-allow');
 178                                         if($allow && $allow[0]['data'] != $r[0]['last-child']) {
 179                                                 $r = q("UPDATE `item` SET `last-child` = %d WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 180                                                         intval($allow[0]['data']),
 181                                                         dbesc($item_id),
 182                                                         intval($importer['uid'])
 183                                                 );
 184                                         }
 185                                         continue;
 186                                 }
 187                                 $datarray = get_atom_elements($item);
 188                                 $datarray['parent-uri'] = $parent_uri;
 189                                 $datarray['uid'] = $importer['uid'];
 190                                 $datarray['contact-id'] = $importer['id'];
 191                                 $r = post_remote($a,$datarray);
 192                                 continue;
 193                         }
 194                 }
 195                 else {
 196                         // Head post of a conversation. Have we seen it? If not, import it.
 197
 198                         $item_id = $item->get_id();
 199                         $r = q("SELECT `uid`, `last-child`, `edited` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 200                                 dbesc($item_id),
 201                                 intval($importer['uid'])
 202                         );
 203                         if(count($r)) {
 204                                 $allow = $item->get_item_tags('http://purl.org/macgirvin/dfrn/1.0','comment-allow');
 205                                 if($allow && $allow[0]['data'] != $r[0]['last-child']) {
 206                                         $r = q("UPDATE `item` SET `last-child` = %d WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 207                                                 intval($allow[0]['data']),
 208                                                 dbesc($item_id),
 209                                                 intval($importer['uid'])
 210                                         );
 211                                 }
 212                                 continue;
 213                         }
 214
 215
 216                         $datarray = get_atom_elements($item);
 217                         $datarray['parent-uri'] = $item_id;
 218                         $datarray['uid'] = $importer['uid'];
 219                         $datarray['contact-id'] = $importer['id'];
 220                         $r = post_remote($a,$datarray);
 221                         continue;
 222
 223                 }
 224
 225         }
 226
 227         xml_status(0);
 228         killme();
 229
 230 }
 231
 232
 233 function dfrn_notify_content(&$a) {
 234
 235         if(x($_GET,'dfrn_id')) {
 236                 // initial communication from external contact
 237                 $hash = random_string();
 238
 239                 $status = 0;
 240
 241                 $r = q("DELETE FROM `challenge` WHERE `expire` < " . intval(time()));
 242
 243                 $r = q("INSERT INTO `challenge` ( `challenge`, `dfrn-id`, `expire` )
 244                         VALUES( '%s', '%s', '%s') ",
 245                         dbesc($hash),
 246                         dbesc(notags(trim($_GET['dfrn_id']))),
 247                         intval(time() + 60 )
 248                 );
 249
 250                 $r = q("SELECT * FROM `contact` WHERE `issued-id` = '%s' AND `blocked` = 0 AND `pending` = 0 LIMIT 1",
 251                         dbesc($_GET['dfrn_id']));
 252                 if((! count($r)) || (! strlen($r[0]['prvkey'])))
 253                         $status = 1;
 254
 255                 $challenge = '';
 256
 257                 openssl_private_encrypt($hash,$challenge,$r[0]['prvkey']);
 258                 $challenge = bin2hex($challenge);
 259
 260                 $encrypted_id = '';
 261                 $id_str = $_GET['dfrn_id'] . '.' . mt_rand(1000,9999);
 262
 263                 openssl_private_encrypt($id_str,$encrypted_id,$r[0]['prvkey']);
 264                 $encrypted_id = bin2hex($encrypted_id);
 265
 266                 echo '<?xml version="1.0" encoding="UTF-8"?><dfrn_notify><status>' .$status . '</status><dfrn_id>' . $encrypted_id . '</dfrn_id>'
 267                         . '<challenge>' . $challenge . '</challenge></dfrn_notify>' . "\r\n" ;
 268                 session_write_close();
 269                 exit;
 270
 271         }
 272
 273 }