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         $r = q("SELECT * FROM `contact` WHERE `issued-id` = '%s' LIMIT 1",
  27                 dbesc($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]['uri'][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
  72                 $r = q("INSERT INTO `mail` (`" . implode("`, `", array_keys($msg))
  73                         . "`) VALUES ('" . implode("', '", array_values($msg)) . "')" );
  74
  75                 // send email notification if requested.
  76                 $r = q("SELECT * FROM `user` WHERE `uid` = %d LIMIT 1",
  77                         intval($importer['uid'])
  78                 );
  79                 require_once('bbcode.php');
  80                 if((count($r)) && ($r[0]['notify-flags'] & NOTIFY_MAIL)) {
  81                         $tpl = file_get_contents('view/mail_received_eml.tpl');
  82                         $email_tpl = replace_macros($tpl, array(
  83                                 '$sitename' => $a->config['sitename'],
  84                                 '$siteurl' =>  $a->get_baseurl(),
  85                                 '$username' => $r[0]['username'],
  86                                 '$email' => $r[0]['email'],
  87                                 '$from' => $msg['from-name'],
  88                                 '$fn' => $r[0]['name'],
  89                                 '$title' => $msg['title'],
  90                                 '$body' => strip_tags(bbcode($msg['body']))
  91                         ));
  92
  93                         $res = mail($r[0]['email'], t("New mail received at ") . $a->config['sitename'],
  94                                 $email_tpl,t("From: Administrator@") . $a->get_hostname() );
  95                 }
  96                 xml_status(0);
  97                 return; // NOTREACHED
  98         }
  99
 100         foreach($feed->get_items() as $item) {
 101
 102                 $deleted = false;
 103
 104                 $rawdelete = $item->get_item_tags("http://purl.org/atompub/tombstones/1.0", 'deleted-entry');
 105                 if(isset($rawdelete[0]['attribs']['']['ref'])) {
 106                         $uri = $rawthread[0]['attribs']['']['ref'];
 107                         $deleted = true;
 108                         if(isset($rawdelete[0]['attribs']['']['when'])) {
 109                                 $when = $rawthread[0]['attribs']['']['when'];
 110                                 $when = datetime_convert('UTC','UTC', $when, 'Y-m-d H:i:s');
 111                         }
 112                         else
 113                                 $when = datetime_convert('UTC','UTC','now','Y-m-d H:i:s');
 114                 }
 115                 if($deleted) {
 116                         $r = q("SELECT * FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 117                                 dbesc($uri),
 118                                 intval($importer['uid'])
 119                         );
 120                         if(count($r)) {
 121                                 if($r[0]['uri'] == $r[0]['parent-uri']) {
 122                                         $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s'
 123                                                 WHERE `parent-uri` = '%s'",
 124                                                 dbesc($when),
 125                                                 dbesc($r[0]['uri'])
 126                                         );
 127                                 }
 128                                 else {
 129                                         $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s'
 130                                                 WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 131                                                 dbesc($when),
 132                                                 dbesc($uri),
 133                                                 intval($importer['uid'])
 134                                         );
 135                                 }
 136                         }
 137                         continue;
 138                 }
 139
 140                 $is_reply = false;
 141                 $item_id = $item->get_id();
 142                 $rawthread = $item->get_item_tags("http://purl.org/syndication/thread/1.0",'in-reply-to');
 143                 if(isset($rawthread[0]['attribs']['']['ref'])) {
 144                         $is_reply = true;
 145                         $parent_uri = $rawthread[0]['attribs']['']['ref'];
 146                 }
 147
 148
 149                 if($is_reply) {
 150                         if($feed->get_item_quantity() == 1) {
 151                                 // remote reply to our post. Import and then notify everybody else.
 152                                 $datarray = get_atom_elements($item);
 153                                 $urn = explode(':',$parent_urn);
 154                                 $datarray['type'] = 'remote-comment';
 155                                 $datarray['parent-uri'] = $parent_uri;
 156                                 $datarray['uid'] = $importer['uid'];
 157                                 $datarray['contact-id'] = $importer['id'];
 158                                 $posted_id = post_remote($a,$datarray);
 159
 160                                 $r = q("SELECT `parent` FROM `item` WHERE `id` = %d AND `uid` = %d LIMIT 1",
 161                                         intval($posted_id),
 162                                         intval($importer['uid'])
 163                                 );
 164                                 if(count($r)) {
 165                                         $r1 = q("UPDATE `item` SET `last-child` = 0 WHERE `uid` = %d AND `parent` = %d",
 166                                                 intval($importer['uid']),
 167                                                 intval($r[0]['parent'])
 168                                         );
 169                                 }
 170                                 $r2 = q("UPDATE `item` SET `last-child` = 1 WHERE `uid` = %d AND `id` = %d LIMIT 1",
 171                                                 intval($importer['uid']),
 172                                                 intval($posted_id)
 173                                 );
 174
 175                                 $url = $a->get_baseurl();
 176
 177                                 proc_close(proc_open("php include/notifier.php $url comment-import $posted_id > remote-notify.log &", array(),$foo));
 178
 179                                 xml_status(0);
 180                                 return;
 181
 182                         }
 183                         else {
 184                                 // regular comment that is part of this total conversation. Have we seen it? If not, import it.
 185
 186                                 $item_id = $item->get_id();
 187
 188                                 $r = q("SELECT `uid`, `last-child`, `edited` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 189                                         dbesc($item_id),
 190                                         intval($importer['uid'])
 191                                 );
 192                                 // FIXME update content if 'updated' changes
 193                                 if(count($r)) {
 194                                         $allow = $item->get_item_tags('http://purl.org/macgirvin/dfrn/1.0','comment-allow');
 195                                         if($allow && $allow[0]['data'] != $r[0]['last-child']) {
 196                                                 $r = q("UPDATE `item` SET `last-child` = %d WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 197                                                         intval($allow[0]['data']),
 198                                                         dbesc($item_id),
 199                                                         intval($importer['uid'])
 200                                                 );
 201                                         }
 202                                         continue;
 203                                 }
 204                                 $datarray = get_atom_elements($item);
 205                                 $datarray['parent-uri'] = $parent_uri;
 206                                 $datarray['uid'] = $importer['uid'];
 207                                 $datarray['contact-id'] = $importer['id'];
 208                                 $r = post_remote($a,$datarray);
 209                                 continue;
 210                         }
 211                 }
 212                 else {
 213                         // Head post of a conversation. Have we seen it? If not, import it.
 214
 215                         $item_id = $item->get_id();
 216                         $r = q("SELECT `uid`, `last-child`, `edited` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 217                                 dbesc($item_id),
 218                                 intval($importer['uid'])
 219                         );
 220                         if(count($r)) {
 221                                 $allow = $item->get_item_tags('http://purl.org/macgirvin/dfrn/1.0','comment-allow');
 222                                 if($allow && $allow[0]['data'] != $r[0]['last-child']) {
 223                                         $r = q("UPDATE `item` SET `last-child` = %d WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 224                                                 intval($allow[0]['data']),
 225                                                 dbesc($item_id),
 226                                                 intval($importer['uid'])
 227                                         );
 228                                 }
 229                                 continue;
 230                         }
 231
 232
 233                         $datarray = get_atom_elements($item);
 234                         $datarray['parent-uri'] = $item_id;
 235                         $datarray['uid'] = $importer['uid'];
 236                         $datarray['contact-id'] = $importer['id'];
 237                         $r = post_remote($a,$datarray);
 238                         continue;
 239
 240                 }
 241
 242         }
 243
 244         xml_status(0);
 245         killme();
 246
 247 }
 248
 249
 250 function dfrn_notify_content(&$a) {
 251
 252         if(x($_GET,'dfrn_id')) {
 253                 // initial communication from external contact
 254                 $hash = random_string();
 255
 256                 $status = 0;
 257
 258                 $r = q("DELETE FROM `challenge` WHERE `expire` < " . intval(time()));
 259
 260                 $r = q("INSERT INTO `challenge` ( `challenge`, `dfrn-id`, `expire` )
 261                         VALUES( '%s', '%s', '%s') ",
 262                         dbesc($hash),
 263                         dbesc(notags(trim($_GET['dfrn_id']))),
 264                         intval(time() + 60 )
 265                 );
 266
 267                 $r = q("SELECT * FROM `contact` WHERE `issued-id` = '%s' AND `blocked` = 0 AND `pending` = 0 LIMIT 1",
 268                         dbesc($_GET['dfrn_id']));
 269                 if((! count($r)) || (! strlen($r[0]['prvkey'])))
 270                         $status = 1;
 271
 272                 $challenge = '';
 273
 274                 openssl_private_encrypt($hash,$challenge,$r[0]['prvkey']);
 275                 $challenge = bin2hex($challenge);
 276
 277                 $encrypted_id = '';
 278                 $id_str = $_GET['dfrn_id'] . '.' . mt_rand(1000,9999);
 279
 280                 openssl_private_encrypt($id_str,$encrypted_id,$r[0]['prvkey']);
 281                 $encrypted_id = bin2hex($encrypted_id);
 282
 283                 echo '<?xml version="1.0" encoding="UTF-8"?><dfrn_notify><status>' .$status . '</status><dfrn_id>' . $encrypted_id . '</dfrn_id>'
 284                         . '<challenge>' . $challenge . '</challenge></dfrn_notify>' . "\r\n" ;
 285                 session_write_close();
 286                 exit;
 287
 288         }
 289
 290 }