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
  32
  33         $importer = $r[0];
  34
  35         $feed = new SimplePie();
  36         $feed->set_raw_data($data);
  37         $feed->enable_order_by_date(false);
  38         $feed->init();
  39
  40         foreach($feed->get_items() as $item) {
  41
  42                 $deleted = false;
  43
  44                 $rawdelete = $item->get_item_tags("http://purl.org/atompub/tombstones/1.0", 'deleted-entry');
  45                 if(isset($rawdelete[0]['attribs']['']['ref'])) {
  46                         $uri = $rawthread[0]['attribs']['']['ref'];
  47                         $deleted = true;
  48                         if(isset($rawdelete[0]['attribs']['']['when'])) {
  49                                 $when = $rawthread[0]['attribs']['']['when'];
  50                                 $when = datetime_convert('UTC','UTC', $when, 'Y-m-d H:i:s');
  51                         }
  52                         else
  53                                 $when = datetime_convert('UTC','UTC','now','Y-m-d H:i:s');
  54                 }
  55                 if($deleted) {
  56                         $r = q("SELECT * FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
  57                                 dbesc($uri),
  58                                 intval($importer['uid'])
  59                         );
  60                         if(count($r)) {
  61                                 if($r[0]['uri'] == $r[0]['parent-uri']) {
  62                                         $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s'
  63                                                 WHERE `parent-uri` = '%s'"
  64                                                 dbesc($when),
  65                                                 dbesc($r[0]['uri'])
  66                                         );
  67                                 }
  68                                 else {
  69                                         $r = q("UPDATE `item` SET `deleted` = 1, `edited` = '%s'
  70                                                 WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
  71                                                 dbesc($when),
  72                                                 dbesc($uri),
  73                                                 intval($importer['uid'])
  74                                         );
  75                                 }
  76                         }
  77                         continue;
  78                 }
  79
  80                 $is_reply = false;
  81                 $item_id = $item->get_id();
  82                 $rawthread = $item->get_item_tags("http://purl.org/syndication/thread/1.0",'in-reply-to');
  83                 if(isset($rawthread[0]['attribs']['']['ref'])) {
  84                         $is_reply = true;
  85                         $parent_uri = $rawthread[0]['attribs']['']['ref'];
  86                 }
  87
  88
  89                 if($is_reply) {
  90                         if($feed->get_item_quantity() == 1) {
  91                                 // remote reply to our post. Import and then notify everybody else.
  92                                 $datarray = get_atom_elements($item);
  93                                 $urn = explode(':',$parent_urn);
  94                                 $datarray['type'] = 'remote-comment';
  95                                 $datarray['parent-uri'] = $parent_uri;
  96                                 $datarray['uid'] = $importer['uid'];
  97                                 $datarray['contact-id'] = $importer['id'];
  98                                 $posted_id = post_remote($a,$datarray);
  99
 100                                 $r = q("SELECT `parent` FROM `item` WHERE `id` = %d AND `uid` = %d LIMIT 1",
 101                                         intval($posted_id),
 102                                         intval($importer['uid'])
 103                                 );
 104                                 if(count($r)) {
 105                                         $r1 = q("UPDATE `item` SET `last-child` = 0 WHERE `uid` = %d AND `parent` = %d",
 106                                                 intval($importer['uid']),
 107                                                 intval($r[0]['parent'])
 108                                         );
 109                                 }
 110                                 $r2 = q("UPDATE `item` SET `last-child` = 1 WHERE `uid` = %d AND `id` = %d LIMIT 1",
 111                                                 intval($importer['uid']),
 112                                                 intval($posted_id)
 113                                 );
 114
 115                                 $url = $a->get_baseurl();
 116
 117                                 proc_close(proc_open("php include/notifier.php $url comment-import $posted_id > remote-notify.log &", array(),$foo));
 118
 119                                 xml_status(0);
 120                                 return;
 121
 122                         }
 123                         else {
 124                                 // regular comment that is part of this total conversation. Have we seen it? If not, import it.
 125
 126                                 $item_id = $item->get_id();
 127
 128                                 $r = q("SELECT `uid`, `last-child`, `edited` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 129                                         dbesc($item_id),
 130                                         intval($importer['uid'])
 131                                 );
 132                                 // FIXME update content if 'updated' changes
 133                                 if(count($r)) {
 134                                         $allow = $item->get_item_tags('http://purl.org/macgirvin/dfrn/1.0','comment-allow');
 135                                         if($allow && $allow[0]['data'] != $r[0]['last-child']) {
 136                                                 $r = q("UPDATE `item` SET `last-child` = %d WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 137                                                         intval($allow[0]['data']),
 138                                                         dbesc($item_id),
 139                                                         intval($importer['uid'])
 140                                                 );
 141                                         }
 142                                         continue;
 143                                 }
 144                                 $datarray = get_atom_elements($item);
 145                                 $datarray['parent-uri'] = $parent_uri;
 146                                 $datarray['uid'] = $importer['uid'];
 147                                 $datarray['contact-id'] = $importer['id'];
 148                                 $r = post_remote($a,$datarray);
 149                                 continue;
 150                         }
 151                 }
 152                 else {
 153                         // Head post of a conversation. Have we seen it? If not, import it.
 154
 155                         $item_id = $item->get_id();
 156                         $r = q("SELECT `uid`, `last-child`, `edited` FROM `item` WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 157                                 dbesc($item_id),
 158                                 intval($importer['uid'])
 159                         );
 160                         if(count($r)) {
 161                                 $allow = $item->get_item_tags('http://purl.org/macgirvin/dfrn/1.0','comment-allow');
 162                                 if($allow && $allow[0]['data'] != $r[0]['last-child']) {
 163                                         $r = q("UPDATE `item` SET `last-child` = %d WHERE `uri` = '%s' AND `uid` = %d LIMIT 1",
 164                                                 intval($allow[0]['data']),
 165                                                 dbesc($item_id),
 166                                                 intval($importer['uid'])
 167                                         );
 168                                 }
 169                                 continue;
 170                         }
 171
 172
 173                         $datarray = get_atom_elements($item);
 174                         $datarray['parent-uri'] = $item_id;
 175                         $datarray['uid'] = $importer['uid'];
 176                         $datarray['contact-id'] = $importer['id'];
 177                         $r = post_remote($a,$datarray);
 178                         continue;
 179
 180                 }
 181
 182         }
 183
 184         xml_status(0);
 185         killme();
 186
 187 }
 188
 189
 190 function dfrn_notify_content(&$a) {
 191
 192         if(x($_GET,'dfrn_id')) {
 193                 // initial communication from external contact
 194                 $hash = random_string();
 195
 196                 $status = 0;
 197
 198                 $r = q("DELETE FROM `challenge` WHERE `expire` < " . intval(time()));
 199
 200                 $r = q("INSERT INTO `challenge` ( `challenge`, `dfrn-id`, `expire` )
 201                         VALUES( '%s', '%s', '%s') ",
 202                         dbesc($hash),
 203                         dbesc(notags(trim($_GET['dfrn_id']))),
 204                         intval(time() + 60 )
 205                 );
 206
 207                 $r = q("SELECT * FROM `contact` WHERE `issued-id` = '%s' AND `blocked` = 0 AND `pending` = 0 LIMIT 1",
 208                         dbesc($_GET['dfrn_id']));
 209                 if((! count($r)) || (! strlen($r[0]['prvkey'])))
 210                         $status = 1;
 211
 212                 $challenge = '';
 213
 214                 openssl_private_encrypt($hash,$challenge,$r[0]['prvkey']);
 215                 $challenge = bin2hex($challenge);
 216                 echo '<?xml version="1.0" encoding="UTF-8"?><dfrn_notify><status>' .$status . '</status><dfrn_id>' . $_GET['dfrn_id'] . '</dfrn_id>'
 217                         . '<challenge>' . $challenge . '</challenge></dfrn_notify>' . "\r\n" ;
 218                 session_write_close();
 219                 exit;
 220
 221         }
 222
 223 }