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