mod/follow.php

   1 <?php
   2
   3 require_once('Scrape.php');
   4
   5 function follow_post(&$a) {
   6
   7         if(! local_user()) {
   8                 notice( t('Permission denied.') . EOL);
   9                 goaway($_SESSION['return_url']);
  10                 // NOTREACHED
  11         }
  12
  13         $url = $orig_url = notags(trim($_POST['url']));
  14
  15         // remove ajax junk, e.g. Twitter
  16
  17         $url = str_replace('/#!/','/',$url);
  18
  19         if(! allowed_url($url)) {
  20                 notice( t('Disallowed profile URL.') . EOL);
  21                 goaway($_SESSION['return_url']);
  22                 // NOTREACHED
  23         }
  24
  25         $ret = probe_url($url);
  26
  27         if($ret['network'] === NETWORK_DFRN) {
  28                 if(strlen($a->path))
  29                         $myaddr = bin2hex($a->get_baseurl() . '/profile/' . $a->user['nickname']);
  30                 else
  31                         $myaddr = bin2hex($a->user['nickname'] . '@' . $a->get_hostname());
  32
  33                 goaway($ret['request'] . "&addr=$myaddr");
  34
  35                 // NOTREACHED
  36         }
  37         else {
  38                 if(get_config('system','dfrn_only')) {
  39                         notice( t('This site is not configured to allow communications with other networks.') . EOL);
  40                         notice( t('No compatible communication protocols or feeds were discovered.') . EOL);
  41                         goaway($_SESSION['return_url']);
  42                 }
  43         }
  44
  45         // do we have enough information?
  46
  47         if(! ((x($ret,'name')) && (x($ret,'poll')) && ((x($ret,'url')) || (x($ret,'addr'))))) {
  48                 notice( t('The profile address specified does not provide adequate information.') . EOL);
  49                 if(! x($ret,'poll'))
  50                         notice( t('No compatible communication protocols or feeds were discovered.') . EOL);
  51                 if(! x($ret,'name'))
  52                         notice( t('An author or name was not found.') . EOL);
  53                 if(! x($ret,'url'))
  54                         notice( t('No browser URL could be matched to this address.') . EOL);
  55                 if(strpos($url,'@') !== false)
  56                         notice('Unable to match @-style Identity Address with a known protocol or email contact');
  57                 goaway($_SESSION['return_url']);
  58         }
  59
  60         if($ret['network'] === NETWORK_OSTATUS && get_config('system','ostatus_disabled')) {
  61                 notice( t('The profile address specified belongs to a network which has been disabled on this site.') . EOL);
  62                 $ret['notify'] = '';
  63         }
  64
  65         if(! $ret['notify']) {
  66                 notice( t('Limited profile. This person will be unable to receive direct/personal notifications from you.') . EOL);
  67         }
  68
  69         $writeable = ((($ret['network'] === NETWORK_OSTATUS) && ($ret['notify'])) ? 1 : 0);
  70         if($ret['network'] === NETWORK_MAIL) {
  71                 $writeable = 1;
  72
  73         }
  74
  75         // check if we already have a contact
  76         // the poll url is more reliable than the profile url, as we may have
  77         // indirect links or webfinger links
  78
  79         $r = q("SELECT * FROM `contact` WHERE `uid` = %d AND `poll` = '%s' LIMIT 1",
  80                 intval(local_user()),
  81                 dbesc($ret['poll'])
  82         );
  83
  84         if(count($r)) {
  85                 // update contact
  86                 if($r[0]['rel'] == CONTACT_IS_FOLLOWER) {
  87                         q("UPDATE `contact` SET `rel` = %d , `readonly` = 0 WHERE `id` = %d AND `uid` = %d LIMIT 1",
  88                                 intval(CONTACT_IS_FRIEND),
  89                                 intval($r[0]['id']),
  90                                 intval(local_user())
  91                         );
  92                 }
  93         }
  94         else {
  95                 // create contact record
  96                 $r = q("INSERT INTO `contact` ( `uid`, `created`, `url`, `addr`, `alias`, `notify`, `poll`, `name`, `nick`, `photo`, `network`, `rel`, `priority`,
  97                         `writable`, `blocked`, `readonly`, `pending` )
  98                         VALUES ( %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d, %d, %d, 0, 0, 0 ) ",
  99                         intval(local_user()),
 100                         dbesc(datetime_convert()),
 101                         dbesc($ret['url']),
 102                         dbesc($ret['addr']),
 103                         dbesc($ret['alias']),
 104                         dbesc($ret['notify']),
 105                         dbesc($ret['poll']),
 106                         dbesc($ret['name']),
 107                         dbesc($ret['nick']),
 108                         dbesc($ret['photo']),
 109                         dbesc($ret['network']),
 110                         intval(($ret['network'] === NETWORK_MAIL) ? CONTACT_IS_FRIEND : CONTACT_IS_SHARING),
 111                         intval($ret['priority']),
 112                         intval($writeable)
 113                 );
 114         }
 115
 116         $r = q("SELECT * FROM `contact` WHERE `url` = '%s' AND `uid` = %d LIMIT 1",
 117                 dbesc($ret['url']),
 118                 intval(local_user())
 119         );
 120
 121         if(! count($r)) {
 122                 notice( t('Unable to retrieve contact information.') . EOL);
 123                 goaway($_SESSION['return_url']);
 124                 // NOTREACHED
 125         }
 126
 127         $contact = $r[0];
 128         $contact_id  = $r[0]['id'];
 129
 130         require_once("Photo.php");
 131
 132         $photos = import_profile_photo($ret['photo'],local_user(),$contact_id);
 133
 134         $r = q("UPDATE `contact` SET `photo` = '%s',
 135                         `thumb` = '%s',
 136                         `micro` = '%s',
 137                         `name-date` = '%s',
 138                         `uri-date` = '%s',
 139                         `avatar-date` = '%s'
 140                         WHERE `id` = %d LIMIT 1
 141                 ",
 142                         dbesc($photos[0]),
 143                         dbesc($photos[1]),
 144                         dbesc($photos[2]),
 145                         dbesc(datetime_convert()),
 146                         dbesc(datetime_convert()),
 147                         dbesc(datetime_convert()),
 148                         intval($contact_id)
 149                 );
 150
 151
 152         // pull feed and consume it, which should subscribe to the hub.
 153
 154         proc_run('php',"include/poller.php","$contact_id");
 155
 156         // create a follow slap
 157
 158         $tpl = get_markup_template('follow_slap.tpl');
 159         $slap = replace_macros($tpl, array(
 160                 '$name' => $a->user['username'],
 161                 '$profile_page' => $a->get_baseurl() . '/profile/' . $a->user['nickname'],
 162                 '$photo' => $a->contact['photo'],
 163                 '$thumb' => $a->contact['thumb'],
 164                 '$published' => datetime_convert('UTC','UTC', 'now', ATOM_TIME),
 165                 '$item_id' => 'urn:X-dfrn:' . $a->get_hostname() . ':follow:' . random_string(),
 166                 '$title' => '',
 167                 '$type' => 'text',
 168                 '$content' => t('following'),
 169                 '$nick' => $a->user['nickname'],
 170                 '$verb' => ACTIVITY_FOLLOW,
 171                 '$ostat_follow' => ''
 172         ));
 173
 174         $r = q("SELECT `contact`.*, `user`.* FROM `contact` LEFT JOIN `user` ON `contact`.`uid` = `user`.`uid`
 175                         WHERE `user`.`uid` = %d AND `contact`.`self` = 1 LIMIT 1",
 176                         intval(local_user())
 177         );
 178
 179         if(count($r)) {
 180                 if(($contact['network'] == NETWORK_OSTATUS) && (strlen($contact['notify']))) {
 181                         require_once('include/salmon.php');
 182                         slapper($r[0],$contact['notify'],$slap);
 183                 }
 184                 if($contact['network'] == NETWORK_DIASPORA) {
 185                         require_once('include/diaspora.php');
 186                         $ret = diaspora_share($a->user,$r[0]);
 187                         logger('mod_follow: diaspora_share returns: ' . $ret);
 188                 }
 189         }
 190
 191         goaway($_SESSION['return_url']);
 192         // NOTREACHED
 193 }