mod/receive.php

   1 <?php
   2
   3 /**
   4  * Diaspora endpoint
   5  */
   6
   7
   8 require_once('include/salmon.php');
   9 require_once('include/crypto.php');
  10 require_once('include/diaspora.php');
  11
  12
  13
  14 function receive_post(&$a) {
  15
  16         if($a->argc != 3 || $a->argv[1] !== 'users')
  17                 http_status_exit(500);
  18
  19         $guid = $a->argv[2];
  20
  21         $r = q("SELECT * FROM `user` WHERE `guid` = '%s' LIMIT 1",
  22                 dbesc($guid)
  23         );
  24         if(! count($r))
  25                 http_status_exit(500);
  26
  27         $importer = $r[0];
  28
  29         $xml = $_POST['xml'];
  30
  31         logger('mod-diaspora: new salmon ' . $xml, LOGGER_DATA);
  32
  33         if(! $xml)
  34                 http_status_exit(500);
  35
  36         $msg = diaspora_decode($importer,$xml);
  37         if(! $msg)
  38                 http_status_exit(500);
  39
  40
  41         $parsed_xml = parse_xml_string($msg);
  42
  43         $xmlbase = $parsed_xml->post;
  44
  45         // If we reached this point, the message is good.
  46         // Now let's figure out if the author is allowed to send us stuff.
  47
  48         $r = q("SELECT * FROM `contact` WHERE `network` = 'dspr' AND ( `url` = '%s' OR `alias` = '%s')
  49                 AND `uid` = %d LIMIT 1",
  50                 dbesc($author_link),
  51                 dbesc($author_link),
  52                 intval($importer['uid'])
  53         );
  54         if(! count($r)) {
  55                 logger('mod-diaspora: Author unknown to us.');
  56         }
  57
  58         // is this a follower? Or have we ignored the person?
  59         // If so we can not accept this post.
  60         // However we will accept a sharing e.g. friend request
  61
  62         if((count($r)) && (($r[0]['readonly']) || ($r[0]['rel'] == CONTACT_IS_FOLLOWER) || ($r[0]['blocked']))) {
  63                 if(! $xmlbase->request) {
  64                         logger('mod-diaspora: Ignoring this author.');
  65                         http_status_exit(202);
  66                         // NOTREACHED
  67                 }
  68         }
  69
  70         require_once('include/items.php');
  71
  72         $contact = ((count($r)) ? $r[0] : null);
  73
  74         logger('diaspora msg: ' . $msg, LOGGER_DATA);
  75
  76         if($xmlbase->request) {
  77                 diaspora_request($importer,$contact,$xmlbase->request);
  78         }
  79         elseif($xmlbase->status_message) {
  80                 diaspora_post($importer,$contact,$xmlbase->status_message);
  81         }
  82         elseif($xmlbase->comment) {
  83                 diaspora_comment($importer,$contact,$xmlbase->comment);
  84         }
  85         elseif($xmlbase->like) {
  86                 diaspora_like($importer,$contact,$xmlbase->like);
  87         }
  88         elseif($xmlbase->retraction) {
  89                 diaspora_retraction($importer,$contact,$xmlbase->retraction);
  90         }
  91         else {
  92                 logger('mod-diaspora: unknown message type: ' . print_r($xmlbase,true));
  93         }
  94
  95         http_status_exit(200);
  96         // NOTREACHED
  97 }
  98