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         if(! strlen($arr['remote-avatar']))
  59                 $arr['remote-avatar'] = $a->get_baseurl() . '/images/default-profile-sm.jpg';
  60         if(! strlen($arr['owner-avatar']))
  61                 $arr['owner-avatar'] = $a->get_baseurl() . '/images/default-profile-sm.jpg';
  62         $arr['created'] = datetime_convert('UTC','UTC',$arr['created'],'Y-m-d H:i:s');
  63         $arr['edited'] = datetime_convert('UTC','UTC',$arr['edited'],'Y-m-d H:i:s');
  64         $arr['title'] = notags(trim($arr['title']));
  65         $arr['body'] = escape_tags(trim($arr['body']));
  66         $arr['last-child'] = intval($arr['last-child']);
  67         $arr['visible'] = 1;
  68         $arr['deleted'] = 0;
  69
  70         $parent = $arr['parent_urn'];
  71
  72         unset($arr['parent_urn']);
  73
  74         $parent_id = 0;
  75
  76         dbesc_array($arr);
  77
  78         $r = q("INSERT INTO `item` (`"
  79                         . implode("`, `", array_keys($arr))
  80                         . "`) VALUES ('"
  81                         . implode("', '", array_values($arr))
  82                         . "')" );
  83
  84
  85         $r = q("SELECT `id` FROM `item` WHERE `remote-id` = '%s' AND `uid` = %d LIMIT 1",
  86                 dbesc($parent),
  87                 intval($arr['uid'])
  88         );
  89         if(count($r))
  90                 $parent_id = $r[0]['id'];
  91
  92
  93         $r = q("SELECT `id` FROM `item` WHERE `remote-id` = '%s' AND `uid` = %d LIMIT 1",
  94                 $arr['remote-id'],
  95                 intval($arr['uid'])
  96         );
  97         if(count($r))
  98                 $current_post = $r[0]['id'];
  99
 100         $r = q("UPDATE `item` SET `parent` = %d WHERE `id` = %d LIMIT 1",
 101                 intval($parent_id),
 102                 intval($current_post)
 103         );
 104
 105 }
 106
 107 function dfrn_notify_post(&$a) {
 108 dbg(3);
 109         $dfrn_id = notags(trim($_POST['dfrn_id']));
 110         $challenge = notags(trim($_POST['challenge']));
 111         $data = $_POST['data'];
 112         $r = q("SELECT * FROM `challenge` WHERE `dfrn-id` = '%s' AND `challenge` = '%s' LIMIT 1",
 113                 dbesc($dfrn_id),
 114                 dbesc($challenge)
 115         );
 116         if(! count($r))
 117                 xml_status(3);
 118
 119         $r = q("DELETE FROM `challenge` WHERE `dfrn-id` = '%s' AND `challenge` = '%s' LIMIT 1",
 120                 dbesc($dfrn_id),
 121                 dbesc($challenge)
 122         );
 123
 124         // find the local user who owns this relationship.
 125
 126         $r = q("SELECT `id`, `uid` FROM `contact` WHERE `issued-id` = '%s' LIMIT 1",
 127                 dbesc($dfrn_id)
 128         );
 129         if(! count($r))
 130                 xml_status(3);
 131
 132
 133         $importer = $r[0];
 134
 135         $feed = new SimplePie();
 136         $feed->set_raw_data($data);
 137         $feed->enable_order_by_date(false);
 138         $feed->init();
 139
 140         foreach($feed->get_items() as $item) {
 141
 142                 $rawdelete = $item->get_item_tags("http://purl.org/atompub/tombstones/1.0", 'deleted-entry');
 143                 print_r($rawdelete);
 144                 if($deleted) {
 145                         // pick out ref and when from attribs
 146                         // check hasn't happened already, verify ownership and then process it
 147
 148
 149                         continue;
 150                 }
 151
 152                 $is_reply = false;
 153                 $item_id = $item->get_id();
 154                 $rawthread = $item->get_item_tags("http://purl.org/syndication/thread/1.0",'in-reply-to');
 155                 if(isset($rawthread[0]['attribs']['']['ref'])) {
 156                         $is_reply = true;
 157                         $parent_urn = $rawthread[0]['attribs']['']['ref'];
 158                 }
 159
 160
 161                 if($is_reply) {
 162                         if($x == ($total_items - 1)) {
 163                                 // remote reply to our post. Import and then notify everybody else.
 164                         }
 165                         else {
 166                                 // regular comment that is part of this total conversation. Have we seen it? If not, import it.
 167
 168                                 $item_id = $item->get_id();
 169
 170                                 $r = q("SELECT `uid`, `last-child` FROM `item` WHERE `remote-id` = '%s' AND `uid` = %d LIMIT 1",
 171                                         dbesc($item_id),
 172                                         intval($importer['uid'])
 173                                 );
 174                                 if(count($r)) {
 175                                         $allow = $item->get_item_tags('http://purl.org/macgirvin/dfrn/1.0','comment-allow');
 176                                         if($allow && $allow[0]['data'] != $r[0]['last-child']) {
 177                                                 $r = q("UPDATE `item` SET `last-child` = %d WHERE `remote-id` = '%s' AND `uid` = %d LIMIT 1",
 178                                                         intval($allow[0]['data']),
 179                                                         dbesc($item_id)
 180                                                 );
 181                                         }
 182                                         continue;
 183                                 }
 184                                 $datarray = get_atom_elements($item);
 185                                 $datarray['parent_urn'] = $parent_urn;
 186                                 $datarray['uid'] = $importer['uid'];
 187                                 $datarray['contact-id'] = $importer['id'];
 188                                 $r = post_remote($datarray);
 189                                 continue;
 190                         }
 191                 }
 192                 else {
 193                         // Head post of a conversation. Have we seen it? If not, import it.
 194
 195                         $item_id = $item->get_id();
 196                         $r = q("SELECT `uid` FROM `item` WHERE `remote-id` = '%s' AND `uid` = %d LIMIT 1",
 197                                 dbesc($item_id),
 198                                 intval($importer['uid'])
 199                         );
 200                         if(count($r)) {
 201                                 $allow = $item->get_item_tags('http://purl.org/macgirvin/dfrn/1.0','comment-allow');
 202                                 if($allow && $allow[0]['data'] != $r[0]['last-child']) {
 203                                         $r = q("UPDATE `item` SET `last-child` = %d WHERE `remote-id` = '%s' AND `uid` = %d LIMIT 1",
 204                                                 intval($allow[0]['data']),
 205                                                 dbesc($item_id)
 206                                         );
 207                                 }
 208                                 continue;
 209                         }
 210
 211
 212                         $datarray = get_atom_elements($item);
 213                         $datarray['parent_urn'] = $item_id;
 214                         $datarray['uid'] = $importer['uid'];
 215                         $datarray['contact-id'] = $importer['id'];
 216                         $r = post_remote($datarray);
 217                         continue;
 218
 219                 }
 220
 221         }
 222
 223
 224         killme();
 225
 226 }
 227
 228
 229
 230
 231
 232
 233
 234
 235
 236
 237 function dfrn_notify_content(&$a) {
 238
 239         if(x($_GET,'dfrn_id')) {
 240                 // initial communication from external contact
 241                 $hash = random_string();
 242
 243                 $status = 0;
 244
 245                 $r = q("DELETE FROM `challenge` WHERE `expire` < " . intval(time()));
 246
 247                 $r = q("INSERT INTO `challenge` ( `challenge`, `dfrn-id`, `expire` )
 248                         VALUES( '%s', '%s', '%s') ",
 249                         dbesc($hash),
 250                         dbesc(notags(trim($_GET['dfrn_id']))),
 251                         intval(time() + 60 )
 252                 );
 253
 254                 $r = q("SELECT * FROM `contact` WHERE `issued-id` = '%s' AND `blocked` = 0 LIMIT 1",
 255                         dbesc($_GET['dfrn_id']));
 256                 if((! count($r)) || (! strlen($r[0]['prvkey'])))
 257                         $status = 1;
 258
 259                 $challenge = '';
 260
 261                 openssl_private_encrypt($hash,$challenge,$r[0]['prvkey']);
 262                 $challenge = bin2hex($challenge);
 263                 echo '<?xml version="1.0" encoding="UTF-8"?><dfrn_notify><status>' .$status . '</status><dfrn_id>' . $_GET['dfrn_id'] . '</dfrn_id>'
 264                         . '<challenge>' . $challenge . '</challenge></dfrn_notify>' . "\r\n" ;
 265                 session_write_close();
 266                 exit;
 267
 268         }
 269
 270 }