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                                 $myaddr = bin2hex($a->get_baseurl() . '/profile/' . $a->user['nickname']);
  42                         else
  43                                 $myaddr = bin2hex($a->user['nickname'] . '@' . $a->get_hostname());
  44
  45                         goaway($ret['dfrn-request'] . "&addr=$myaddr");
  46
  47                         // NOTREACHED
  48                 }
  49         }
  50
  51         $network = 'stat';
  52
  53         if($hcard) {
  54                 $vcard = scrape_vcard($hcard);
  55
  56                 // Google doesn't use absolute url in profile photos
  57
  58                 if((x($vcard,'photo')) && substr($vcard['photo'],0,1) == '/') {
  59                         $h = parse_url($hcard);
  60                         if($h)
  61                                 $vcard['photo'] = $h['scheme'] . '://' . $h['host'] . $vcard['photo'];
  62                 }
  63         }
  64
  65         if(! $profile)
  66                 $profile = $url;
  67
  68
  69         if(! x($vcard,'fn'))
  70                 if(x($vcard,'nick'))
  71                         $vcard['fn'] = $vcard['nick'];
  72
  73         if((! isset($vcard)) && (! $poll)) {
  74
  75                 $ret = scrape_feed($url);
  76
  77                 if(count($ret) && $ret['feed_atom']) {
  78                         $poll = $ret['feed_atom'];
  79                         $vcard = array();
  80                         require_once('simplepie/simplepie.inc');
  81                     $feed = new SimplePie();
  82                         $xml = fetch_url($poll);
  83
  84                 $feed->set_raw_data($xml);
  85
  86                     $feed->init();
  87
  88                         $vcard['photo'] = $feed->get_image_url();
  89                         $author = $feed->get_author();
  90                         if($author) {
  91                                 $vcard['fn'] = trim($author->get_name());
  92                                 $vcard['nick'] = strtolower($vcard['fn']);
  93                                 if(strpos($vcard['nick'],' '))
  94                                         $vcard['nick'] = trim(substr($vcard['nick'],0,strpos($vcard['nick'],' ')));
  95                                 $email = $author->get_email();
  96                         }
  97                         else {
  98                                 $item = $feed->get_item(0);
  99                                 if($item) {
 100                                         $author = $item->get_author();
 101                                         if($author) {
 102                                                 $vcard['fn'] = trim($author->get_name());
 103                                                 $vcard['nick'] = strtolower($vcard['fn']);
 104                                                 if(strpos($vcard['nick'],' '))
 105                                                         $vcard['nick'] = trim(substr($vcard['nick'],0,strpos($vcard['nick'],' ')));
 106                                                 $email = $author->get_email();
 107                                         }
 108                                 }
 109                         }
 110                         if((! $vcard['photo']) && strlen($email))
 111                                 $vcard['photo'] = gravatar_img($email);
 112                         $network = 'feed';
 113         }
 114         }
 115
 116         logger('follow: poll=' . $poll . ' notify=' . $notify . ' profile=' . $profile . ' vcard=' . print_r($vcard,true));
 117
 118
 119         // do we have enough information?
 120
 121         if(! ((x($vcard['fn'])) && ($poll) && ($profile))) {
 122                 notice( t('The profile address specified does not provide adequate information.') . EOL);
 123                 goaway($_SESSION['return_url']);
 124         }
 125
 126         if(! $notify) {
 127                 notice( t('Limited profile. This person will be unable to receive direct/personal notifications from you.') . EOL);
 128         }
 129
 130         if(! x($vcard,'photo'))
 131                 $vcard['photo'] = $a->get_baseurl() . '/images/default-profile.jpg' ;
 132
 133         // check if we already have a contact
 134         // the poll url is more reliable than the profile url, as we may have
 135         // indirect links or webfinger links
 136
 137         $r = q("SELECT * FROM `contact` WHERE `uid` = %d AND `poll` = '%s' LIMIT 1",
 138                 intval(local_user()),
 139                 dbesc($poll)
 140         );
 141
 142         if(count($r)) {
 143                 // update contact
 144                 if($r[0]['rel'] == REL_VIP) {
 145                         q("UPDATE `contact` SET `rel` = %d , `readonly` = 0 WHERE `id` = %d AND `uid` = %d LIMIT 1",
 146                                 intval(REL_BUD),
 147                                 intval($r[0]['id']),
 148                                 intval(local_user())
 149                         );
 150                 }
 151         }
 152         else {
 153                 // create contact record
 154                 $r = q("INSERT INTO `contact` ( `uid`, `created`, `url`, `notify`, `poll`, `name`, `nick`, `photo`, `network`, `rel`,
 155                         `blocked`, `readonly`, `pending` )
 156                         VALUES ( %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d, 0, 0, 0 ) ",
 157                         intval(local_user()),
 158                         dbesc(datetime_convert()),
 159                         dbesc($profile),
 160                         dbesc($notify),
 161                         dbesc($poll),
 162                         dbesc($vcard['fn']),
 163                         dbesc($vcard['nick']),
 164                         dbesc($vcard['photo']),
 165                         dbesc($network),
 166                         intval(REL_FAN)
 167                 );
 168         }
 169
 170         $r = q("SELECT * FROM `contact` WHERE `url` = '%s' AND `uid` = %d LIMIT 1",
 171                 dbesc($profile),
 172                 intval(local_user())
 173         );
 174
 175         if(! count($r)) {
 176                 notice( t('Unable to retrieve contact information.') . EOL);
 177                 goaway($_SESSION['return_url']);
 178                 // NOTREACHED
 179         }
 180
 181         $contact = $r[0];
 182         $contact_id  = $r[0]['id'];
 183
 184         require_once("Photo.php");
 185
 186         $photos = import_profile_photo($vcard['photo'],local_user(),$contact_id);
 187
 188         $r = q("UPDATE `contact` SET `photo` = '%s',
 189                         `thumb` = '%s',
 190                         `micro` = '%s',
 191                         `name-date` = '%s',
 192                         `uri-date` = '%s',
 193                         `avatar-date` = '%s'
 194                         WHERE `id` = %d LIMIT 1
 195                 ",
 196                         dbesc($photos[0]),
 197                         dbesc($photos[1]),
 198                         dbesc($photos[2]),
 199                         dbesc(datetime_convert()),
 200                         dbesc(datetime_convert()),
 201                         dbesc(datetime_convert()),
 202                         intval($contact_id)
 203                 );
 204
 205
 206         // pull feed and consume it, which should subscribe to the hub.
 207
 208         $php_path = ((x($a->config,'php_path') && strlen($a->config['php_path'])) ? $a->config['php_path'] : 'php');
 209         proc_close(proc_open("\"$php_path\" \"include/poller.php\" \"$contact_id\" &", array(), $foo));
 210
 211
 212         // create a follow slap
 213
 214         $tpl = load_view_file('view/follow_slap.tpl');
 215         $slap = replace_macros($tpl, array(
 216                 '$name' => $a->user['username'],
 217                 '$profile_page' => $a->get_baseurl() . '/profile/' . $a->user['nickname'],
 218                 '$photo' => $a->contact['photo'],
 219                 '$thumb' => $a->contact['thumb'],
 220                 '$published' => datetime_convert('UTC','UTC', 'now', ATOM_TIME),
 221                 '$item_id' => 'urn:X-dfrn:' . $a->get_hostname() . ':follow:' . random_string(),
 222                 '$title' => '',
 223                 '$type' => 'text',
 224                 '$content' => t('following'),
 225                 '$nick' => $a->user['nickname'],
 226                 '$verb' => ACTIVITY_FOLLOW,
 227                 '$ostat_follow' => ''
 228         ));
 229
 230         $r = q("SELECT `contact`.*, `user`.* FROM `contact` LEFT JOIN `user` ON `contact`.`uid` = `user`.`uid`
 231                         WHERE `user`.`uid` = %d AND `contact`.`self` = 1 LIMIT 1",
 232                         intval(local_user())
 233         );
 234
 235
 236         if((count($r)) && (x($contact,'notify')) && (strlen($contact['notify']))) {
 237                 require_once('include/salmon.php');
 238                 slapper($r[0],$contact['notify'],$slap);
 239         }
 240
 241         goaway($_SESSION['return_url']);
 242         // NOTREACHED
 243 }