mod/dfrn_notify.php

   1 <?php
   2
   3 require_once('simplepie/simplepie.inc');
   4
   5
   6 function get_atom_elements($item) {
   7
   8         $res = array();
   9
  10         $author = $item->get_author();
  11         $res['remote-name'] = $author->get_name();
  12         $res['remote-link'] = $author->get_link();
  13         $res['remote-avatar'] = $author->get_avatar();
  14         $res['remote-id'] = $item->get_id();
  15         $res['title'] = $item->get_title();
  16         $res['body'] = $item->get_content();
  17
  18         if(strlen($res['body']) > 100000)
  19                 $res['body'] = substr($res['body'],0,10000) . "\r\n[Extremely large post truncated.]\r\n"  ;
  20
  21         $allow = $item->get_item_tags('http://purl.org/macgirvin/dfrn/1.0','comment-allow');
  22         if($allow && $allow[0]['data'] == 1)
  23                 $res['last-child'] = 1;
  24         else
  25                 $res['last-child'] = 0;
  26
  27         $rawcreated = $item->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10,'published');
  28         if($rawcreated)
  29                 $res['created'] = $rawcreated[0]['data'];
  30
  31         $rawedited = $item->get_item_tags(SIMPLEPIE_NAMESPACE_ATOM_10,'updated');
  32         if($rawedited)
  33                 $res['edited'] = $rawcreated[0]['data'];
  34
  35         $rawowner = $item->get_item_tags('http://purl.org/macgirvin/dfrn/1.0', 'owner');
  36         if($rawowner[0]['child']['http://purl.org/macgirvin/dfrn/1.0']['name'][0]['data'])
  37                 $res['owner-name'] = $rawowner[0]['child']['http://purl.org/macgirvin/dfrn/1.0']['name'][0]['data'];
  38         if($rawowner[0]['child']['http://purl.org/macgirvin/dfrn/1.0']['uri'][0]['data'])
  39                 $res['owner-link'] = $rawowner[0]['child']['http://purl.org/macgirvin/dfrn/1.0']['uri'][0]['data'];
  40         if($rawowner[0]['child']['http://purl.org/macgirvin/dfrn/1.0']['avatar'][0]['data'])
  41                 $res['owner-avatar'] = $rawowner[0]['child']['http://purl.org/macgirvin/dfrn/1.0']['avatar'][0]['data'];
  42
  43
  44         return $res;
  45
  46 }
  47
  48 function post_remote($arr) {
  49
  50         $arr['hash'] = random_string();
  51         $arr['type'] = 'remote';
  52         $arr['remote-name'] = notags(trim($arr['remote-name']));
  53         $arr['remote-link'] = notags(trim($arr['remote-link']));
  54         $arr['remote-avatar'] = notags(trim($arr['remote-avatar']));
  55         $arr['owner-name'] = notags(trim($arr['owner-name']));
  56         $arr['owner-link'] = notags(trim($arr['owner-link']));
  57         $arr['owner-avatar'] = notags(trim($arr['owner-avatar']));
  58 // must pass $a
  59 //      if(! strlen($arr['remote-avatar']))
  60 //              $arr['remote-avatar'] = $a->get_baseurl() . '/images/default-profile-sm.jpg';
  61 //      if(! strlen($arr['owner-avatar']))
  62 //              $arr['owner-avatar'] = $a->get_baseurl() . '/images/default-profile-sm.jpg';
  63         $arr['created'] = datetime_convert('UTC','UTC',$arr['created'],'Y-m-d H:i:s');
  64         $arr['edited'] = datetime_convert('UTC','UTC',$arr['edited'],'Y-m-d H:i:s');
  65         $arr['title'] = notags(trim($arr['title']));
  66         $arr['body'] = escape_tags(trim($arr['body']));
  67         $arr['last-child'] = intval($arr['last-child']);
  68         $arr['visible'] = 1;
  69         $arr['deleted'] = 0;
  70
  71         $parent = $arr['parent_urn'];
  72
  73         unset($arr['parent_urn']);
  74
  75         $parent_id = 0;
  76
  77         dbesc_array($arr);
  78
  79         $r = q("INSERT INTO `item` (`"
  80                         . implode("`, `", array_keys($arr))
  81                         . "`) VALUES ('"
  82                         . implode("', '", array_values($arr))
  83                         . "')" );
  84
  85
  86         $r = q("SELECT `id` FROM `item` WHERE `remote-id` = '%s' AND `uid` = %d LIMIT 1",
  87                 dbesc($parent),
  88                 intval($arr['uid'])
  89         );
  90         if(count($r))
  91                 $parent_id = $r[0]['id'];
  92
  93
  94         $r = q("SELECT `id` FROM `item` WHERE `remote-id` = '%s' AND `uid` = %d LIMIT 1",
  95                 $arr['remote-id'],
  96                 intval($arr['uid'])
  97         );
  98         if(count($r))
  99                 $current_post = $r[0]['id'];
 100
 101         $r = q("UPDATE `item` SET `parent` = %d WHERE `id` = %d LIMIT 1",
 102                 intval($parent_id),
 103                 intval($current_post)
 104         );
 105
 106 }
 107
 108 function dfrn_notify_post(&$a) {
 109 dbg(3);
 110         $dfrn_id = notags(trim($_POST['dfrn_id']));
 111         $challenge = notags(trim($_POST['challenge']));
 112         $data = $_POST['data'];
 113         $r = q("SELECT * FROM `challenge` WHERE `dfrn-id` = '%s' AND `challenge` = '%s' LIMIT 1",
 114                 dbesc($dfrn_id),
 115                 dbesc($challenge)
 116         );
 117         if(! count($r))
 118                 xml_status(3);
 119
 120         $r = q("DELETE FROM `challenge` WHERE `dfrn-id` = '%s' AND `challenge` = '%s' LIMIT 1",
 121                 dbesc($dfrn_id),
 122                 dbesc($challenge)
 123         );
 124
 125         // find the local user who owns this relationship.
 126
 127         $r = q("SELECT `id`, `uid` FROM `contact` WHERE `issued-id` = '%s' LIMIT 1",
 128                 dbesc($dfrn_id)
 129         );
 130         if(! count($r))
 131                 xml_status(3);
 132
 133
 134         $importer = $r[0];
 135
 136         $feed = new SimplePie();
 137         $feed->set_raw_data($data);
 138         $feed->enable_order_by_date(false);
 139         $feed->init();
 140
 141         foreach($feed->get_items() as $item) {
 142
 143                 $rawdelete = $item->get_item_tags("http://purl.org/atompub/tombstones/1.0", 'deleted-entry');
 144                 print_r($rawdelete);
 145                 if($deleted) {
 146                         // pick out ref and when from attribs
 147                         // check hasn't happened already, verify ownership and then process it
 148
 149
 150                         continue;
 151                 }
 152
 153                 $is_reply = false;
 154                 $item_id = $item->get_id();
 155                 $rawthread = $item->get_item_tags("http://purl.org/syndication/thread/1.0",'in-reply-to');
 156                 if(isset($rawthread[0]['attribs']['']['ref'])) {
 157                         $is_reply = true;
 158                         $parent_urn = $rawthread[0]['attribs']['']['ref'];
 159                 }
 160
 161
 162                 if($is_reply) {
 163                         if($x == ($total_items - 1)) {
 164                                 // remote reply to our post. Import and then notify everybody else.
 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                                 $r = q("SELECT `uid`, `last-child` FROM `item` WHERE `remote-id` = '%s' AND `uid` = %d LIMIT 1",
 172                                         dbesc($item_id),
 173                                         intval($importer['uid'])
 174                                 );
 175                                 if(count($r)) {
 176                                         $allow = $item->get_item_tags('http://purl.org/macgirvin/dfrn/1.0','comment-allow');
 177                                         if($allow && $allow[0]['data'] != $r[0]['last-child']) {
 178                                                 $r = q("UPDATE `item` SET `last-child` = %d WHERE `remote-id` = '%s' AND `uid` = %d LIMIT 1",
 179                                                         intval($allow[0]['data']),
 180                                                         dbesc($item_id)
 181                                                 );
 182                                         }
 183                                         continue;
 184                                 }
 185                                 $datarray = get_atom_elements($item);
 186                                 $datarray['parent_urn'] = $parent_urn;
 187                                 $datarray['uid'] = $importer['uid'];
 188                                 $datarray['contact-id'] = $importer['id'];
 189                                 $r = post_remote($datarray);
 190                                 continue;
 191                         }
 192                 }
 193                 else {
 194                         // Head post of a conversation. Have we seen it? If not, import it.
 195
 196                         $item_id = $item->get_id();
 197                         $r = q("SELECT `uid` FROM `item` WHERE `remote-id` = '%s' AND `uid` = %d LIMIT 1",
 198                                 dbesc($item_id),
 199                                 intval($importer['uid'])
 200                         );
 201                         if(count($r)) {
 202                                 $allow = $item->get_item_tags('http://purl.org/macgirvin/dfrn/1.0','comment-allow');
 203                                 if($allow && $allow[0]['data'] != $r[0]['last-child']) {
 204                                         $r = q("UPDATE `item` SET `last-child` = %d WHERE `remote-id` = '%s' AND `uid` = %d LIMIT 1",
 205                                                 intval($allow[0]['data']),
 206                                                 dbesc($item_id)
 207                                         );
 208                                 }
 209                                 continue;
 210                         }
 211
 212
 213                         $datarray = get_atom_elements($item);
 214                         $datarray['parent_urn'] = $item_id;
 215                         $datarray['uid'] = $importer['uid'];
 216                         $datarray['contact-id'] = $importer['id'];
 217                         $r = post_remote($datarray);
 218                         continue;
 219
 220                 }
 221
 222         }
 223
 224
 225         killme();
 226
 227 }
 228
 229
 230
 231
 232
 233
 234
 235
 236
 237
 238 function dfrn_notify_content(&$a) {
 239
 240         if(x($_GET,'dfrn_id')) {
 241                 // initial communication from external contact
 242                 $hash = random_string();
 243
 244                 $status = 0;
 245
 246                 $r = q("DELETE FROM `challenge` WHERE `expire` < " . intval(time()));
 247
 248                 $r = q("INSERT INTO `challenge` ( `challenge`, `dfrn-id`, `expire` )
 249                         VALUES( '%s', '%s', '%s') ",
 250                         dbesc($hash),
 251                         dbesc(notags(trim($_GET['dfrn_id']))),
 252                         intval(time() + 60 )
 253                 );
 254
 255                 $r = q("SELECT * FROM `contact` WHERE `issued-id` = '%s' AND `blocked` = 0 LIMIT 1",
 256                         dbesc($_GET['dfrn_id']));
 257                 if((! count($r)) || (! strlen($r[0]['prvkey'])))
 258                         $status = 1;
 259
 260                 $challenge = '';
 261
 262                 openssl_private_encrypt($hash,$challenge,$r[0]['prvkey']);
 263                 $challenge = bin2hex($challenge);
 264                 echo '<?xml version="1.0" encoding="UTF-8"?><dfrn_notify><status>' .$status . '</status><dfrn_id>' . $_GET['dfrn_id'] . '</dfrn_id>'
 265                         . '<challenge>' . $challenge . '</challenge></dfrn_notify>' . "\r\n" ;
 266                 session_write_close();
 267                 exit;
 268
 269         }
 270
 271 }