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                 $writeable = 1;
  72
  73         }
  74         if($ret['network'] === NETWORK_DIASPORA)
  75                 $writeable = 1;
  76
  77         // check if we already have a contact
  78         // the poll url is more reliable than the profile url, as we may have
  79         // indirect links or webfinger links
  80
  81         $r = q("SELECT * FROM `contact` WHERE `uid` = %d AND `poll` = '%s' LIMIT 1",
  82                 intval(local_user()),
  83                 dbesc($ret['poll'])
  84         );
  85
  86         if(count($r)) {
  87                 // update contact
  88                 if($r[0]['rel'] == CONTACT_IS_FOLLOWER || ($network === NETWORK_DIASPORA && $r[0]['rel'] == CONTACT_IS_SHARING)) {
  89                         q("UPDATE `contact` SET `rel` = %d , `readonly` = 0 WHERE `id` = %d AND `uid` = %d LIMIT 1",
  90                                 intval(CONTACT_IS_FRIEND),
  91                                 intval($r[0]['id']),
  92                                 intval(local_user())
  93                         );
  94                 }
  95         }
  96         else {
  97
  98                 $new_relation = (($ret['network'] === NETWORK_MAIL) ? CONTACT_IS_FRIEND : CONTACT_IS_SHARING);
  99                 if($ret['network'] === NETWORK_DIASPORA)
 100                         $new_relation = CONTACT_IS_FOLLOWER;
 101
 102                 // create contact record
 103                 $r = q("INSERT INTO `contact` ( `uid`, `created`, `url`, `addr`, `alias`, `notify`, `poll`, `name`, `nick`, `photo`, `network`, `rel`, `priority`,
 104                         `writable`, `blocked`, `readonly`, `pending` )
 105                         VALUES ( %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d, %d, %d, 0, 0, 0 ) ",
 106                         intval(local_user()),
 107                         dbesc(datetime_convert()),
 108                         dbesc($ret['url']),
 109                         dbesc($ret['addr']),
 110                         dbesc($ret['alias']),
 111                         dbesc($ret['notify']),
 112                         dbesc($ret['poll']),
 113                         dbesc($ret['name']),
 114                         dbesc($ret['nick']),
 115                         dbesc($ret['photo']),
 116                         dbesc($ret['network']),
 117                         intval($new_relation),
 118                         intval($ret['priority']),
 119                         intval($writeable)
 120                 );
 121         }
 122
 123         $r = q("SELECT * FROM `contact` WHERE `url` = '%s' AND `uid` = %d LIMIT 1",
 124                 dbesc($ret['url']),
 125                 intval(local_user())
 126         );
 127
 128         if(! count($r)) {
 129                 notice( t('Unable to retrieve contact information.') . EOL);
 130                 goaway($_SESSION['return_url']);
 131                 // NOTREACHED
 132         }
 133
 134         $contact = $r[0];
 135         $contact_id  = $r[0]['id'];
 136
 137         require_once("Photo.php");
 138
 139         $photos = import_profile_photo($ret['photo'],local_user(),$contact_id);
 140
 141         $r = q("UPDATE `contact` SET `photo` = '%s',
 142                         `thumb` = '%s',
 143                         `micro` = '%s',
 144                         `name-date` = '%s',
 145                         `uri-date` = '%s',
 146                         `avatar-date` = '%s'
 147                         WHERE `id` = %d LIMIT 1
 148                 ",
 149                         dbesc($photos[0]),
 150                         dbesc($photos[1]),
 151                         dbesc($photos[2]),
 152                         dbesc(datetime_convert()),
 153                         dbesc(datetime_convert()),
 154                         dbesc(datetime_convert()),
 155                         intval($contact_id)
 156                 );
 157
 158
 159         // pull feed and consume it, which should subscribe to the hub.
 160
 161         proc_run('php',"include/poller.php","$contact_id");
 162
 163         // create a follow slap
 164
 165         $tpl = get_markup_template('follow_slap.tpl');
 166         $slap = replace_macros($tpl, array(
 167                 '$name' => $a->user['username'],
 168                 '$profile_page' => $a->get_baseurl() . '/profile/' . $a->user['nickname'],
 169                 '$photo' => $a->contact['photo'],
 170                 '$thumb' => $a->contact['thumb'],
 171                 '$published' => datetime_convert('UTC','UTC', 'now', ATOM_TIME),
 172                 '$item_id' => 'urn:X-dfrn:' . $a->get_hostname() . ':follow:' . random_string(),
 173                 '$title' => '',
 174                 '$type' => 'text',
 175                 '$content' => t('following'),
 176                 '$nick' => $a->user['nickname'],
 177                 '$verb' => ACTIVITY_FOLLOW,
 178                 '$ostat_follow' => ''
 179         ));
 180
 181         $r = q("SELECT `contact`.*, `user`.* FROM `contact` LEFT JOIN `user` ON `contact`.`uid` = `user`.`uid`
 182                         WHERE `user`.`uid` = %d AND `contact`.`self` = 1 LIMIT 1",
 183                         intval(local_user())
 184         );
 185
 186         if(count($r)) {
 187                 if(($contact['network'] == NETWORK_OSTATUS) && (strlen($contact['notify']))) {
 188                         require_once('include/salmon.php');
 189                         slapper($r[0],$contact['notify'],$slap);
 190                 }
 191                 if($contact['network'] == NETWORK_DIASPORA) {
 192                         require_once('include/diaspora.php');
 193                         $ret = diaspora_share($a->user,$r[0]);
 194                         logger('mod_follow: diaspora_share returns: ' . $ret);
 195                 }
 196         }
 197
 198         goaway($a->get_baseurl() . '/contacts/' . $contact_id);
 199 //      goaway($_SESSION['return_url']);
 200         // NOTREACHED
 201 }