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         $email_conversant = false;
  16
  17         if($url) {
  18                 $links = lrdd($url);
  19                 if(count($links)) {
  20                         foreach($links as $link) {
  21                                 if($link['@attributes']['rel'] === NAMESPACE_DFRN)
  22                                         $dfrn = $link['@attributes']['href'];
  23                                 if($link['@attributes']['rel'] === 'salmon')
  24                                         $notify = $link['@attributes']['href'];
  25                                 if($link['@attributes']['rel'] === NAMESPACE_FEED)
  26                                         $poll = $link['@attributes']['href'];
  27                                 if($link['@attributes']['rel'] === 'http://microformats.org/profile/hcard')
  28                                         $hcard = $link['@attributes']['href'];
  29                                 if($link['@attributes']['rel'] === 'http://webfinger.net/rel/profile-page')
  30                                         $profile = $link['@attributes']['href'];
  31
  32                         }
  33                 }
  34                 else {
  35                         if((strpos($orig_url,'@')) && validate_email($orig_url)) {
  36                                 $email_conversant = true;
  37                         }
  38                 }
  39         }
  40
  41         // If we find a DFRN site, send our subscriber to the other person's
  42         // dfrn_request page and all the other details will get sorted.
  43
  44         if(strlen($dfrn)) {
  45                 $ret = scrape_dfrn($dfrn);
  46                 if(is_array($ret) && x($ret,'dfrn-request')) {
  47                         if(strlen($a->path))
  48                                 $myaddr = bin2hex($a->get_baseurl() . '/profile/' . $a->user['nickname']);
  49                         else
  50                                 $myaddr = bin2hex($a->user['nickname'] . '@' . $a->get_hostname());
  51
  52                         goaway($ret['dfrn-request'] . "&addr=$myaddr");
  53
  54                         // NOTREACHED
  55                 }
  56         }
  57
  58         $network  = 'stat';
  59         $priority = 0;
  60
  61         if($hcard) {
  62                 $vcard = scrape_vcard($hcard);
  63
  64                 // Google doesn't use absolute url in profile photos
  65
  66                 if((x($vcard,'photo')) && substr($vcard['photo'],0,1) == '/') {
  67                         $h = parse_url($hcard);
  68                         if($h)
  69                                 $vcard['photo'] = $h['scheme'] . '://' . $h['host'] . $vcard['photo'];
  70                 }
  71         }
  72
  73         if(! $profile)
  74                 $profile = $url;
  75
  76
  77         if(! x($vcard,'fn'))
  78                 if(x($vcard,'nick'))
  79                         $vcard['fn'] = $vcard['nick'];
  80
  81         if((! isset($vcard)) && (! $poll)) {
  82
  83                 $ret = scrape_feed($url);
  84
  85                 if(count($ret) && ($ret['feed_atom'] || $ret['feed_rss'])) {
  86                         $poll = ((x($ret,'feed_atom')) ? $ret['feed_atom'] : $ret['feed_rss']);
  87                         $vcard = array();
  88                         require_once('simplepie/simplepie.inc');
  89                     $feed = new SimplePie();
  90                         $xml = fetch_url($poll);
  91
  92                 $feed->set_raw_data($xml);
  93
  94                     $feed->init();
  95
  96                         $vcard['photo'] = $feed->get_image_url();
  97                         $author = $feed->get_author();
  98                         if($author) {
  99                                 $vcard['fn'] = trim($author->get_name());
 100                                 $vcard['nick'] = strtolower($vcard['fn']);
 101                                 if(strpos($vcard['nick'],' '))
 102                                         $vcard['nick'] = trim(substr($vcard['nick'],0,strpos($vcard['nick'],' ')));
 103                                 $email = $author->get_email();
 104                         }
 105                         else {
 106                                 $item = $feed->get_item(0);
 107                                 if($item) {
 108                                         $author = $item->get_author();
 109                                         if($author) {
 110                                                 $vcard['fn'] = trim($author->get_name());
 111                                                 $vcard['nick'] = strtolower($vcard['fn']);
 112                                                 if(strpos($vcard['nick'],' '))
 113                                                         $vcard['nick'] = trim(substr($vcard['nick'],0,strpos($vcard['nick'],' ')));
 114                                                 $email = $author->get_email();
 115                                         }
 116                                 }
 117                         }
 118                         if((! $vcard['photo']) && strlen($email))
 119                                 $vcard['photo'] = gravatar_img($email);
 120                         $network = 'feed';
 121                         $priority = 2;
 122                 }
 123         }
 124
 125         logger('follow: poll=' . $poll . ' notify=' . $notify . ' profile=' . $profile . ' vcard=' . print_r($vcard,true));
 126
 127         // do we have enough information?
 128
 129         if(! ((x($vcard['fn'])) && ($poll) && ($profile))) {
 130                 notice( t('The profile address specified does not provide adequate information.') . EOL);
 131                 goaway($_SESSION['return_url']);
 132         }
 133
 134         if(! $notify) {
 135                 notice( t('Limited profile. This person will be unable to receive direct/personal notifications from you.') . EOL);
 136         }
 137
 138         if(! x($vcard,'photo'))
 139                 $vcard['photo'] = $a->get_baseurl() . '/images/default-profile.jpg' ;
 140
 141         // check if we already have a contact
 142         // the poll url is more reliable than the profile url, as we may have
 143         // indirect links or webfinger links
 144
 145         $r = q("SELECT * FROM `contact` WHERE `uid` = %d AND `poll` = '%s' LIMIT 1",
 146                 intval(local_user()),
 147                 dbesc($poll)
 148         );
 149
 150         if(count($r)) {
 151                 // update contact
 152                 if($r[0]['rel'] == REL_VIP) {
 153                         q("UPDATE `contact` SET `rel` = %d , `readonly` = 0 WHERE `id` = %d AND `uid` = %d LIMIT 1",
 154                                 intval(REL_BUD),
 155                                 intval($r[0]['id']),
 156                                 intval(local_user())
 157                         );
 158                 }
 159         }
 160         else {
 161                 // create contact record
 162                 $r = q("INSERT INTO `contact` ( `uid`, `created`, `url`, `notify`, `poll`, `name`, `nick`, `photo`, `network`, `rel`, `priority`,
 163                         `blocked`, `readonly`, `pending` )
 164                         VALUES ( %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d, 0, 0, 0 ) ",
 165                         intval(local_user()),
 166                         dbesc(datetime_convert()),
 167                         dbesc($profile),
 168                         dbesc($notify),
 169                         dbesc($poll),
 170                         dbesc($vcard['fn']),
 171                         dbesc($vcard['nick']),
 172                         dbesc($vcard['photo']),
 173                         dbesc($network),
 174                         intval(REL_FAN),
 175                         intval($priority)
 176                 );
 177         }
 178
 179         $r = q("SELECT * FROM `contact` WHERE `url` = '%s' AND `uid` = %d LIMIT 1",
 180                 dbesc($profile),
 181                 intval(local_user())
 182         );
 183
 184         if(! count($r)) {
 185                 notice( t('Unable to retrieve contact information.') . EOL);
 186                 goaway($_SESSION['return_url']);
 187                 // NOTREACHED
 188         }
 189
 190         $contact = $r[0];
 191         $contact_id  = $r[0]['id'];
 192
 193         require_once("Photo.php");
 194
 195         $photos = import_profile_photo($vcard['photo'],local_user(),$contact_id);
 196
 197         $r = q("UPDATE `contact` SET `photo` = '%s',
 198                         `thumb` = '%s',
 199                         `micro` = '%s',
 200                         `name-date` = '%s',
 201                         `uri-date` = '%s',
 202                         `avatar-date` = '%s'
 203                         WHERE `id` = %d LIMIT 1
 204                 ",
 205                         dbesc($photos[0]),
 206                         dbesc($photos[1]),
 207                         dbesc($photos[2]),
 208                         dbesc(datetime_convert()),
 209                         dbesc(datetime_convert()),
 210                         dbesc(datetime_convert()),
 211                         intval($contact_id)
 212                 );
 213
 214
 215         // pull feed and consume it, which should subscribe to the hub.
 216
 217         $php_path = ((x($a->config,'php_path') && strlen($a->config['php_path'])) ? $a->config['php_path'] : 'php');
 218         //proc_close(proc_open("\"$php_path\" \"include/poller.php\" \"$contact_id\" &", array(), $foo));
 219         proc_run($php_path,"include/poller.php","$contact_id");
 220
 221         // create a follow slap
 222
 223         $tpl = load_view_file('view/follow_slap.tpl');
 224         $slap = replace_macros($tpl, array(
 225                 '$name' => $a->user['username'],
 226                 '$profile_page' => $a->get_baseurl() . '/profile/' . $a->user['nickname'],
 227                 '$photo' => $a->contact['photo'],
 228                 '$thumb' => $a->contact['thumb'],
 229                 '$published' => datetime_convert('UTC','UTC', 'now', ATOM_TIME),
 230                 '$item_id' => 'urn:X-dfrn:' . $a->get_hostname() . ':follow:' . random_string(),
 231                 '$title' => '',
 232                 '$type' => 'text',
 233                 '$content' => t('following'),
 234                 '$nick' => $a->user['nickname'],
 235                 '$verb' => ACTIVITY_FOLLOW,
 236                 '$ostat_follow' => ''
 237         ));
 238
 239         $r = q("SELECT `contact`.*, `user`.* FROM `contact` LEFT JOIN `user` ON `contact`.`uid` = `user`.`uid`
 240                         WHERE `user`.`uid` = %d AND `contact`.`self` = 1 LIMIT 1",
 241                         intval(local_user())
 242         );
 243
 244
 245         if((count($r)) && (x($contact,'notify')) && (strlen($contact['notify']))) {
 246                 require_once('include/salmon.php');
 247                 slapper($r[0],$contact['notify'],$slap);
 248         }
 249
 250         goaway($_SESSION['return_url']);
 251         // NOTREACHED
 252 }