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         $diaspora = false;
  15         $email_conversant = false;
  16
  17         if($url) {
  18                 $links = lrdd($url);
  19
  20                 if(count($links)) {
  21                         foreach($links as $link) {
  22                                 if($link['@attributes']['rel'] === NAMESPACE_DFRN)
  23                                         $dfrn = unamp($link['@attributes']['href']);
  24                                 if($link['@attributes']['rel'] === 'salmon')
  25                                         $notify = unamp($link['@attributes']['href']);
  26                                 if($link['@attributes']['rel'] === NAMESPACE_FEED)
  27                                         $poll = unamp($link['@attributes']['href']);
  28                                 if($link['@attributes']['rel'] === 'http://microformats.org/profile/hcard')
  29                                         $hcard = unamp($link['@attributes']['href']);
  30                                 if($link['@attributes']['rel'] === 'http://webfinger.net/rel/profile-page')
  31                                         $profile = unamp($link['@attributes']['href']);
  32                                 if($link['@attributes']['rel'] === 'http://joindiaspora.com/seed_location')
  33                                         $diaspora = true;
  34
  35
  36                         }
  37
  38                         // Status.Net can have more than one profile URL. We need to match the profile URL
  39                         // to a contact on incoming messages to prevent spam, and we won't know which one
  40                         // to match. So in case of two, one of them is stored as an alias. Only store URL's
  41                         // and not webfinger user@host aliases. If they've got more than two non-email style
  42                         // aliases, let's hope we're lucky and get one that matches the feed author-uri because
  43                         // otherwise we're screwed.
  44
  45                         foreach($links as $link) {
  46                                 if($link['@attributes']['rel'] === 'alias') {
  47                                         if(strpos($link['@attributes']['href'],'@') === false) {
  48                                                 if(isset($profile)) {
  49                                                         if($link['@attributes']['href'] !== $profile)
  50                                                                 $alias = unamp($link['@attributes']['href']);
  51                                                 }
  52                                                 else
  53                                                         $profile = unamp($link['@attributes']['href']);
  54                                         }
  55                                 }
  56                         }
  57                 }
  58                 else {
  59                         if((strpos($orig_url,'@')) && validate_email($orig_url)) {
  60                                 $email_conversant = true;
  61                         }
  62                 }
  63         }
  64
  65         // If we find a DFRN site, send our subscriber to the other person's
  66         // dfrn_request page and all the other details will get sorted.
  67
  68         if(strlen($dfrn)) {
  69                 $ret = scrape_dfrn($dfrn);
  70                 if(is_array($ret) && x($ret,'dfrn-request')) {
  71                         if(strlen($a->path))
  72                                 $myaddr = bin2hex($a->get_baseurl() . '/profile/' . $a->user['nickname']);
  73                         else
  74                                 $myaddr = bin2hex($a->user['nickname'] . '@' . $a->get_hostname());
  75
  76                         goaway($ret['dfrn-request'] . "&addr=$myaddr");
  77
  78                         // NOTREACHED
  79                 }
  80         }
  81
  82         $network  = 'stat';
  83         $priority = 0;
  84
  85         if($hcard) {
  86                 $vcard = scrape_vcard($hcard);
  87
  88                 // Google doesn't use absolute url in profile photos
  89
  90                 if((x($vcard,'photo')) && substr($vcard['photo'],0,1) == '/') {
  91                         $h = @parse_url($hcard);
  92                         if($h)
  93                                 $vcard['photo'] = $h['scheme'] . '://' . $h['host'] . $vcard['photo'];
  94                 }
  95         }
  96
  97         if(! $profile) {
  98                 if($diaspora)
  99                         $profile = $hcard;
 100                 else
 101                         $profile = $url;
 102         }
 103
 104         if(! x($vcard,'fn'))
 105                 if(x($vcard,'nick'))
 106                         $vcard['fn'] = $vcard['nick'];
 107
 108         if((! isset($vcard)) && (! $poll)) {
 109
 110                 $ret = scrape_feed($url);
 111                 logger('mod_follow: scrape_feed returns: ' . print_r($ret,true), LOGGER_DATA);
 112                 if(count($ret) && ($ret['feed_atom'] || $ret['feed_rss'])) {
 113                         $poll = ((x($ret,'feed_atom')) ? unamp($ret['feed_atom']) : unamp($ret['feed_rss']));
 114                         $vcard = array();
 115                                 if(x($ret,'photo'))
 116                                         $vcard['photo'] = $ret['photo'];
 117                         require_once('simplepie/simplepie.inc');
 118                     $feed = new SimplePie();
 119                         $xml = fetch_url($poll);
 120
 121                 $feed->set_raw_data($xml);
 122
 123                     $feed->init();
 124
 125                         if(! x($vcard,'photo'))
 126                                 $vcard['photo'] = $feed->get_image_url();
 127                         $author = $feed->get_author();
 128                         if($author) {
 129                                 $vcard['fn'] = unxmlify(trim($author->get_name()));
 130                                 if(! $vcard['fn'])
 131                                         $vcard['fn'] = trim(unxmlify($author->get_email()));
 132                                 if(strpos($vcard['fn'],'@') !== false)
 133                                         $vcard['fn'] = substr($vcard['fn'],0,strpos($vcard['fn'],'@'));
 134                                 $vcard['nick'] = strtolower(notags(unxmlify($vcard['fn'])));
 135                                 if(strpos($vcard['nick'],' '))
 136                                         $vcard['nick'] = trim(substr($vcard['nick'],0,strpos($vcard['nick'],' ')));
 137                                 $email = unxmlify($author->get_email());
 138                         }
 139                         else {
 140                                 $item = $feed->get_item(0);
 141                                 if($item) {
 142                                         $author = $item->get_author();
 143                                         if($author) {
 144                                                 $vcard['fn'] = trim(unxmlify($author->get_name()));
 145                                                 if(! $vcard['fn'])
 146                                                         $vcard['fn'] = trim(unxmlify($author->get_email()));
 147                                                 if(strpos($vcard['fn'],'@') !== false)
 148                                                         $vcard['fn'] = substr($vcard['fn'],0,strpos($vcard['fn'],'@'));
 149                                                 $vcard['nick'] = strtolower(unxmlify($vcard['fn']));
 150                                                 if(strpos($vcard['nick'],' '))
 151                                                         $vcard['nick'] = trim(substr($vcard['nick'],0,strpos($vcard['nick'],' ')));
 152                                                 $email = unxmlify($author->get_email());
 153                                         }
 154                                         if(! $vcard['photo']) {
 155                                                 $rawmedia = $item->get_item_tags('http://search.yahoo.com/mrss/','thumbnail');
 156                                                 if($rawmedia && $rawmedia[0]['attribs']['']['url'])
 157                                                         $vcard['photo'] = unxmlify($rawmedia[0]['attribs']['']['url']);
 158                                         }
 159                                 }
 160                         }
 161                         if((! $vcard['photo']) && strlen($email))
 162                                 $vcard['photo'] = gravatar_img($email);
 163                         if($poll === $profile)
 164                                 $lnk = $feed->get_permalink();
 165                         if(isset($lnk) && strlen($lnk))
 166                                 $profile = $lnk;
 167                         if(! (x($vcard,'fn')))
 168                                 $vcard['fn'] = notags($feed->get_title());
 169                         if(! (x($vcard,'fn')))
 170                                 $vcard['fn'] = notags($feed->get_description());
 171                         $network = 'feed';
 172                         $priority = 2;
 173                 }
 174         }
 175
 176         logger('follow: poll=' . $poll . ' notify=' . $notify . ' profile=' . $profile . ' vcard=' . print_r($vcard,true));
 177
 178         $vcard['fn'] = notags($vcard['fn']);
 179         $vcard['nick'] = notags($vcard['nick']);
 180
 181         // do we have enough information?
 182
 183         if(! ((x($vcard['fn'])) && ($poll) && ($profile))) {
 184                 notice( t('The profile address specified does not provide adequate information.') . EOL);
 185                 goaway($_SESSION['return_url']);
 186         }
 187
 188
 189         if(! $notify) {
 190                 notice( t('Limited profile. This person will be unable to receive direct/personal notifications from you.') . EOL);
 191         }
 192
 193         if(! x($vcard,'photo'))
 194                 $vcard['photo'] = $a->get_baseurl() . '/images/default-profile.jpg' ;
 195
 196         // check if we already have a contact
 197         // the poll url is more reliable than the profile url, as we may have
 198         // indirect links or webfinger links
 199
 200         $r = q("SELECT * FROM `contact` WHERE `uid` = %d AND `poll` = '%s' LIMIT 1",
 201                 intval(local_user()),
 202                 dbesc($poll)
 203         );
 204
 205         if(count($r)) {
 206                 // update contact
 207                 if($r[0]['rel'] == REL_VIP) {
 208                         q("UPDATE `contact` SET `rel` = %d , `readonly` = 0 WHERE `id` = %d AND `uid` = %d LIMIT 1",
 209                                 intval(REL_BUD),
 210                                 intval($r[0]['id']),
 211                                 intval(local_user())
 212                         );
 213                 }
 214         }
 215         else {
 216                 // create contact record
 217                 $r = q("INSERT INTO `contact` ( `uid`, `created`, `url`, `alias`, `notify`, `poll`, `name`, `nick`, `photo`, `network`, `rel`, `priority`,
 218                         `blocked`, `readonly`, `pending` )
 219                         VALUES ( %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d, %d, 0, 0, 0 ) ",
 220                         intval(local_user()),
 221                         dbesc(datetime_convert()),
 222                         dbesc($profile),
 223                         dbesc($alias),
 224                         dbesc($notify),
 225                         dbesc($poll),
 226                         dbesc($vcard['fn']),
 227                         dbesc($vcard['nick']),
 228                         dbesc($vcard['photo']),
 229                         dbesc($network),
 230                         intval(REL_FAN),
 231                         intval($priority)
 232                 );
 233         }
 234
 235         $r = q("SELECT * FROM `contact` WHERE `url` = '%s' AND `uid` = %d LIMIT 1",
 236                 dbesc($profile),
 237                 intval(local_user())
 238         );
 239
 240         if(! count($r)) {
 241                 notice( t('Unable to retrieve contact information.') . EOL);
 242                 goaway($_SESSION['return_url']);
 243                 // NOTREACHED
 244         }
 245
 246         $contact = $r[0];
 247         $contact_id  = $r[0]['id'];
 248
 249         require_once("Photo.php");
 250
 251         $photos = import_profile_photo($vcard['photo'],local_user(),$contact_id);
 252
 253         $r = q("UPDATE `contact` SET `photo` = '%s',
 254                         `thumb` = '%s',
 255                         `micro` = '%s',
 256                         `name-date` = '%s',
 257                         `uri-date` = '%s',
 258                         `avatar-date` = '%s'
 259                         WHERE `id` = %d LIMIT 1
 260                 ",
 261                         dbesc($photos[0]),
 262                         dbesc($photos[1]),
 263                         dbesc($photos[2]),
 264                         dbesc(datetime_convert()),
 265                         dbesc(datetime_convert()),
 266                         dbesc(datetime_convert()),
 267                         intval($contact_id)
 268                 );
 269
 270
 271         // pull feed and consume it, which should subscribe to the hub.
 272
 273         proc_run('php',"include/poller.php","$contact_id");
 274
 275         // create a follow slap
 276
 277         $tpl = load_view_file('view/follow_slap.tpl');
 278         $slap = replace_macros($tpl, array(
 279                 '$name' => $a->user['username'],
 280                 '$profile_page' => $a->get_baseurl() . '/profile/' . $a->user['nickname'],
 281                 '$photo' => $a->contact['photo'],
 282                 '$thumb' => $a->contact['thumb'],
 283                 '$published' => datetime_convert('UTC','UTC', 'now', ATOM_TIME),
 284                 '$item_id' => 'urn:X-dfrn:' . $a->get_hostname() . ':follow:' . random_string(),
 285                 '$title' => '',
 286                 '$type' => 'text',
 287                 '$content' => t('following'),
 288                 '$nick' => $a->user['nickname'],
 289                 '$verb' => ACTIVITY_FOLLOW,
 290                 '$ostat_follow' => ''
 291         ));
 292
 293         $r = q("SELECT `contact`.*, `user`.* FROM `contact` LEFT JOIN `user` ON `contact`.`uid` = `user`.`uid`
 294                         WHERE `user`.`uid` = %d AND `contact`.`self` = 1 LIMIT 1",
 295                         intval(local_user())
 296         );
 297
 298
 299         if((count($r)) && (x($contact,'notify')) && (strlen($contact['notify']))) {
 300                 require_once('include/salmon.php');
 301                 slapper($r[0],$contact['notify'],$slap);
 302         }
 303
 304         goaway($_SESSION['return_url']);
 305         // NOTREACHED
 306 }