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
  55         if(! $profile)
  56                 $profile = $url;
  57
  58         // do we have enough information?
  59
  60         if(! x($vcard,'fn'))
  61                 if(x($vcard,'nick'))
  62                         $vcard['fn'] = $vcard['nick'];
  63
  64         if(! ((x($vcard['fn'])) && ($poll) && ($notify) && ($profile))) {
  65                 notice( t('The profile address specified does not provide adequate information.') . EOL);
  66                 goaway($_SESSION['return_url']);
  67         }
  68
  69         if(! x($vcard,'photo'))
  70                 $vcard['photo'] = $a->get_baseurl() . '/images/default-profile.jpg' ;
  71
  72         // check if we already have a contact
  73         // the poll url is more reliable than the profile url, as we may have
  74         // indirect links or webfinger links
  75
  76         $r = q("SELECT * FROM `contact` WHERE `uid` = %d AND `poll` = '%s' LIMIT 1",
  77                 intval(local_user()),
  78                 dbesc($poll)
  79         );
  80         if(count($r)) {
  81                 // update contact
  82                 if($r[0]['rel'] == REL_VIP) {
  83                         q("UPDATE `contact` SET `rel` = %d , `readonly` = 0 WHERE `id` = %d AND `uid` = %d LIMIT 1",
  84                                 intval(REL_BUD),
  85                                 intval($r[0]['id']),
  86                                 intval(local_user())
  87                         );
  88                 }
  89         }
  90         else {
  91                 // create contact record
  92                 $r = q("INSERT INTO `contact` ( `uid`, `created`, `url`, `notify`, `poll`, `name`, `nick`, `photo`, `network`, `rel`,
  93                         `blocked`, `readonly`, `pending` )
  94                         VALUES ( %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d, 0, 0, 0 ) ",
  95                         intval(local_user()),
  96                         dbesc(datetime_convert()),
  97                         dbesc($profile),
  98                         dbesc($notify),
  99                         dbesc($poll),
 100                         dbesc($vcard['fn']),
 101                         dbesc($vcard['nick']),
 102                         dbesc($vcard['photo']),
 103                         dbesc('stat'),
 104                         intval(REL_FAN)
 105                 );
 106         }
 107         $r = q("SELECT * FROM `contact` WHERE `url` = '%s' AND `uid` = %d LIMIT 1",
 108                 dbesc($profile),
 109                 intval(local_user())
 110         );
 111         if(! count($r)) {
 112                 notice( t('Unable to retrieve contact information.') . EOL);
 113                 goaway($_SESSION['return_url']);
 114                 // NOTREACHED
 115         }
 116
 117         $contact = $r[0];
 118         $contact_id  = $r[0]['id'];
 119
 120         require_once("Photo.php");
 121
 122         $photos = import_profile_photo($vcard['photo'],local_user(),$contact_id);
 123
 124         $r = q("UPDATE `contact` SET `photo` = '%s',
 125                         `thumb` = '%s',
 126                         `micro` = '%s',
 127                         `name-date` = '%s',
 128                         `uri-date` = '%s',
 129                         `avatar-date` = '%s'
 130                         WHERE `id` = %d LIMIT 1
 131                 ",
 132                         dbesc($photos[0]),
 133                         dbesc($photos[1]),
 134                         dbesc($photos[2]),
 135                         dbesc(datetime_convert()),
 136                         dbesc(datetime_convert()),
 137                         dbesc(datetime_convert()),
 138                         intval($contact_id)
 139                 );
 140
 141
 142         // pull feed and consume it, which should subscribe to the hub.
 143
 144
 145         // create a follow slap
 146
 147         $tpl = load_view_file('view/follow_slap.tpl');
 148         $slap = replace_macros($tpl, array(
 149                 '$name' => $a->user['username'],
 150                 '$profile_page' => $a->get_baseurl() . '/profile/' . $a->user['nickname'],
 151                 '$photo' => $a->contact['photo'],
 152                 '$thumb' => $a->contact['thumb'],
 153                 '$published' => datetime_convert('UTC','UTC', 'now', ATOM_TIME),
 154                 '$item_id' => 'urn:X-dfrn:' . $a->get_hostname() . ':follow:' . random_string(),
 155                 '$title' => '',
 156                 '$type' => 'text',
 157                 '$content' => t('following'),
 158                 '$nick' => $a->user['nickname'],
 159                 '$verb' => ACTIVITY_FOLLOW
 160         ));
 161
 162         $r = q("SELECT `contact`.*, `user`.* FROM `contact` LEFT JOIN `user` ON `contact`.`uid` = `user`.`uid`
 163                         WHERE `user`.`uid` = %d AND `contact`.`self` = 1 LIMIT 1",
 164                         intval(local_user())
 165         );
 166
 167         require_once('include/salmon.php');
 168         slapper($r[0],$contact['notify'],$slap);
 169
 170         goaway($_SESSION['return_url']);
 171         // NOTREACHED
 172 }