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