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         $url = notags(trim($_POST['url']));
  14
  15         if($url) {
  16                 $links = lrdd($url);
  17                 if(count($links)) {
  18                         foreach($links as $link) {
  19                                 if($link['@attributes']['rel'] === NAMESPACE_DFRN)
  20                                         $dfrn = $link['@attributes']['href'];
  21                                 if($link['@attributes']['rel'] === 'salmon')
  22                                         $notify = $link['@attributes']['href'];
  23                                 if($link['@attributes']['rel'] === NAMESPACE_FEED)
  24                                         $poll = $link['@attributes']['href'];
  25                                 if($link['@attributes']['rel'] === 'http://microformats.org/profile/hcard')
  26                                         $hcard = $link['@attributes']['href'];
  27                                 if($link['@attributes']['rel'] === 'http://webfinger.net/rel/profile-page')
  28                                         $profile = $link['@attributes']['href'];
  29
  30                         }
  31                 }
  32         }
  33
  34         // If we find a DFRN site, send our subscriber to the other person's
  35         // dfrn_request page and all the other details will get sorted.
  36
  37         if(strlen($dfrn)) {
  38                 $ret = scrape_dfrn($dfrn);
  39                 if(is_array($ret) && x($ret,'dfrn-request')) {
  40                         if(strlen($a->path))
  41                                 $myaddr = urlencode($a->get_baseurl() . '/profile/' . $a->user['nickname']);
  42                         else
  43                                 $myaddr = urlencode($a->user['nickname'] . '@' . $a->get_hostname());
  44
  45                         goaway($ret['dfrn-request'] . "&address=$myaddr");
  46
  47                         // NOTREACHED
  48                 }
  49         }
  50
  51         if($hcard) {
  52                 $vcard = scrape_vcard($hcard);
  53
  54                 // Google doesn't use absolute url in profile photos
  55
  56                 if((x($vcard,'photo')) && substr($vcard['photo'],0,1) == '/') {
  57                         $h = parse_url($hcard);
  58                         if($h)
  59                                 $vcard['photo'] = $h['scheme'] . '://' . $h['host'] . $vcard['photo'];
  60                 }
  61         }
  62
  63         if(! $profile)
  64                 $profile = $url;
  65
  66         // do we have enough information?
  67
  68         if(! x($vcard,'fn'))
  69                 if(x($vcard,'nick'))
  70                         $vcard['fn'] = $vcard['nick'];
  71
  72         logger('follow: poll=' . $poll . ' notify=' . $notify . ' profile=' . $profile . ' vcard=' . print_r($vcard,true));
  73
  74         if(! ((x($vcard['fn'])) && ($poll) && ($profile))) {
  75                 notice( t('The profile address specified does not provide adequate information.') . EOL);
  76                 goaway($_SESSION['return_url']);
  77         }
  78
  79         if(! $notify) {
  80                 notice( t('Limited profile. This person will be unable to receive direct/personal notifications from you.') . EOL);
  81         }
  82
  83         if(! x($vcard,'photo'))
  84                 $vcard['photo'] = $a->get_baseurl() . '/images/default-profile.jpg' ;
  85
  86         // check if we already have a contact
  87         // the poll url is more reliable than the profile url, as we may have
  88         // indirect links or webfinger links
  89
  90         $r = q("SELECT * FROM `contact` WHERE `uid` = %d AND `poll` = '%s' LIMIT 1",
  91                 intval(local_user()),
  92                 dbesc($poll)
  93         );
  94
  95         if(count($r)) {
  96                 // update contact
  97                 if($r[0]['rel'] == REL_VIP) {
  98                         q("UPDATE `contact` SET `rel` = %d , `readonly` = 0 WHERE `id` = %d AND `uid` = %d LIMIT 1",
  99                                 intval(REL_BUD),
 100                                 intval($r[0]['id']),
 101                                 intval(local_user())
 102                         );
 103                 }
 104         }
 105         else {
 106                 // create contact record
 107                 $r = q("INSERT INTO `contact` ( `uid`, `created`, `url`, `notify`, `poll`, `name`, `nick`, `photo`, `network`, `rel`,
 108                         `blocked`, `readonly`, `pending` )
 109                         VALUES ( %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d, 0, 0, 0 ) ",
 110                         intval(local_user()),
 111                         dbesc(datetime_convert()),
 112                         dbesc($profile),
 113                         dbesc($notify),
 114                         dbesc($poll),
 115                         dbesc($vcard['fn']),
 116                         dbesc($vcard['nick']),
 117                         dbesc($vcard['photo']),
 118                         dbesc('stat'),
 119                         intval(REL_FAN)
 120                 );
 121         }
 122
 123         $r = q("SELECT * FROM `contact` WHERE `url` = '%s' AND `uid` = %d LIMIT 1",
 124                 dbesc($profile),
 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         $photos = import_profile_photo($vcard['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
 162         // create a follow slap
 163
 164         $tpl = load_view_file('view/follow_slap.tpl');
 165         $slap = replace_macros($tpl, array(
 166                 '$name' => $a->user['username'],
 167                 '$profile_page' => $a->get_baseurl() . '/profile/' . $a->user['nickname'],
 168                 '$photo' => $a->contact['photo'],
 169                 '$thumb' => $a->contact['thumb'],
 170                 '$published' => datetime_convert('UTC','UTC', 'now', ATOM_TIME),
 171                 '$item_id' => 'urn:X-dfrn:' . $a->get_hostname() . ':follow:' . random_string(),
 172                 '$title' => '',
 173                 '$type' => 'text',
 174                 '$content' => t('following'),
 175                 '$nick' => $a->user['nickname'],
 176                 '$verb' => ACTIVITY_FOLLOW
 177         ));
 178
 179         $r = q("SELECT `contact`.*, `user`.* FROM `contact` LEFT JOIN `user` ON `contact`.`uid` = `user`.`uid`
 180                         WHERE `user`.`uid` = %d AND `contact`.`self` = 1 LIMIT 1",
 181                         intval(local_user())
 182         );
 183
 184
 185         if((x($contact,'notify')) && (strlen($contact['notify']))) {
 186                 require_once('include/salmon.php');
 187                 slapper($r[0],$contact['notify'],$slap);
 188         }
 189
 190         goaway($_SESSION['return_url']);
 191         // NOTREACHED
 192 }