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 dbg(3);
   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         $feed->init();
  48
  49         foreach($feed->get_items() as $item) {
  50
  51                 $deleted = false;
  52
  53                 $rawdelete = $item->get_item_tags("http://purl.org/atompub/tombstones/1.0", 'deleted-entry');
  54                 if(isset($rawdelete[0]['attribs']['']['ref'])) {
  55                         $uri = $rawthread[0]['attribs']['']['ref'];
  56                         $deleted = true;
  57                         if(isset($rawdelete[0]['attribs']['']['when'])) {
  58                                 $when = $rawthread[0]['attribs']['']['when'];
  59                                 $when = datetime_convert('UTC','UTC', $when, 'Y-m-d H:i:s');
  60                         }
  61                         else
  62                                 $when = datetime_convert('UTC','UTC','now','Y-m-d H:i:s');
  63                 }
  64                 if($deleted) {
  65                         $r = q("SELECT * FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
  66                                 dbesc($uri),
  67                                 intval($importer['uid'])
  68                         );
  69                         if(count($r)) {
  70                                 if($r[0]['uri'] == $r[0]['parent-uri']) {
  71                                         $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s'
  72                                                 WHERE `parent-uri` = '%s'",
  73                                                 dbesc($when),
  74                                                 dbesc($r[0]['uri'])
  75                                         );
  76                                 }
  77                                 else {
  78                                         $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s'
  79                                                 WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
  80                                                 dbesc($when),
  81                                                 dbesc($uri),
  82                                                 intval($importer['uid'])
  83                                         );
  84                                 }
  85                         }
  86                         continue;
  87                 }
  88
  89                 $is_reply = false;
  90                 $item_id = $item->get_id();
  91                 $rawthread = $item->get_item_tags("http://purl.org/syndication/thread/1.0",'in-reply-to');
  92                 if(isset($rawthread[0]['attribs']['']['ref'])) {
  93                         $is_reply = true;
  94                         $parent_uri = $rawthread[0]['attribs']['']['ref'];
  95                 }
  96
  97
  98                 if($is_reply) {
  99                         if($feed->get_item_quantity() == 1) {
 100                                 // remote reply to our post. Import and then notify everybody else.
 101                                 $datarray = get_atom_elements($item);
 102                                 $urn = explode(':',$parent_urn);
 103                                 $datarray['type'] = 'remote-comment';
 104                                 $datarray['parent-uri'] = $parent_uri;
 105                                 $datarray['uid'] = $importer['uid'];
 106                                 $datarray['contact-id'] = $importer['id'];
 107                                 $posted_id = post_remote($a,$datarray);
 108
 109                                 $r = q("SELECT `parent` FROM `item` WHERE `id` = %d AND `uid` = %d LIMIT 1",
 110                                         intval($posted_id),
 111                                         intval($importer['uid'])
 112                                 );
 113                                 if(count($r)) {
 114                                         $r1 = q("UPDATE `item` SET `last-child` = 0 WHERE `uid` = %d AND `parent` = %d",
 115                                                 intval($importer['uid']),
 116                                                 intval($r[0]['parent'])
 117                                         );
 118                                 }
 119                                 $r2 = q("UPDATE `item` SET `last-child` = 1 WHERE `uid` = %d AND `id` = %d LIMIT 1",
 120                                                 intval($importer['uid']),
 121                                                 intval($posted_id)
 122                                 );
 123
 124                                 $url = $a->get_baseurl();
 125
 126                                 proc_close(proc_open("php include/notifier.php $url comment-import $posted_id > remote-notify.log &", array(),$foo));
 127
 128                                 xml_status(0);
 129                                 return;
 130
 131                         }
 132                         else {
 133                                 // regular comment that is part of this total conversation. Have we seen it? If not, import it.
 134
 135                                 $item_id = $item->get_id();
 136
 137                                 $r = q("SELECT `uid`, `last-child`, `edited` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 138                                         dbesc($item_id),
 139                                         intval($importer['uid'])
 140                                 );
 141                                 // FIXME update content if 'updated' changes
 142                                 if(count($r)) {
 143                                         $allow = $item->get_item_tags('http://purl.org/macgirvin/dfrn/1.0','comment-allow');
 144                                         if($allow && $allow[0]['data'] != $r[0]['last-child']) {
 145                                                 $r = q("UPDATE `item` SET `last-child` = %d WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 146                                                         intval($allow[0]['data']),
 147                                                         dbesc($item_id),
 148                                                         intval($importer['uid'])
 149                                                 );
 150                                         }
 151                                         continue;
 152                                 }
 153                                 $datarray = get_atom_elements($item);
 154                                 $datarray['parent-uri'] = $parent_uri;
 155                                 $datarray['uid'] = $importer['uid'];
 156                                 $datarray['contact-id'] = $importer['id'];
 157                                 $r = post_remote($a,$datarray);
 158                                 continue;
 159                         }
 160                 }
 161                 else {
 162                         // Head post of a conversation. Have we seen it? If not, import it.
 163
 164                         $item_id = $item->get_id();
 165                         $r = q("SELECT `uid`, `last-child`, `edited` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 166                                 dbesc($item_id),
 167                                 intval($importer['uid'])
 168                         );
 169                         if(count($r)) {
 170                                 $allow = $item->get_item_tags('http://purl.org/macgirvin/dfrn/1.0','comment-allow');
 171                                 if($allow && $allow[0]['data'] != $r[0]['last-child']) {
 172                                         $r = q("UPDATE `item` SET `last-child` = %d WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 173                                                 intval($allow[0]['data']),
 174                                                 dbesc($item_id),
 175                                                 intval($importer['uid'])
 176                                         );
 177                                 }
 178                                 continue;
 179                         }
 180
 181
 182                         $datarray = get_atom_elements($item);
 183                         $datarray['parent-uri'] = $item_id;
 184                         $datarray['uid'] = $importer['uid'];
 185                         $datarray['contact-id'] = $importer['id'];
 186                         $r = post_remote($a,$datarray);
 187                         continue;
 188
 189                 }
 190
 191         }
 192
 193         xml_status(0);
 194         killme();
 195
 196 }
 197
 198
 199 function dfrn_notify_content(&$a) {
 200
 201         if(x($_GET,'dfrn_id')) {
 202                 // initial communication from external contact
 203                 $hash = random_string();
 204
 205                 $status = 0;
 206
 207                 $r = q("DELETE FROM `challenge` WHERE `expire` < " . intval(time()));
 208
 209                 $r = q("INSERT INTO `challenge` ( `challenge`, `dfrn-id`, `expire` )
 210                         VALUES( '%s', '%s', '%s') ",
 211                         dbesc($hash),
 212                         dbesc(notags(trim($_GET['dfrn_id']))),
 213                         intval(time() + 60 )
 214                 );
 215
 216                 $r = q("SELECT * FROM `contact` WHERE `issued-id` = '%s' AND `blocked` = 0 AND `pending` = 0 LIMIT 1",
 217                         dbesc($_GET['dfrn_id']));
 218                 if((! count($r)) || (! strlen($r[0]['prvkey'])))
 219                         $status = 1;
 220
 221                 $challenge = '';
 222
 223                 openssl_private_encrypt($hash,$challenge,$r[0]['prvkey']);
 224                 $challenge = bin2hex($challenge);
 225                 echo '<?xml version="1.0" encoding="UTF-8"?><dfrn_notify><status>' .$status . '</status><dfrn_id>' . $_GET['dfrn_id'] . '</dfrn_id>'
 226                         . '<challenge>' . $challenge . '</challenge></dfrn_notify>' . "\r\n" ;
 227                 session_write_close();
 228                 exit;
 229
 230         }
 231
 232 }