mod/follow.php

   1 <?php
   2
   3 require_once('Scrape.php');
   4
   5 function follow_init(&$a) {
   6
   7         if(! local_user()) {
   8                 notice( t('Permission denied.') . EOL);
   9                 goaway($_SESSION['return_url']);
  10                 // NOTREACHED
  11         }
  12
  13         $url = $orig_url = notags(trim($_REQUEST['url']));
  14
  15         // remove ajax junk, e.g. Twitter
  16
  17         $url = str_replace('/#!/','/',$url);
  18
  19         if(! allowed_url($url)) {
  20                 notice( t('Disallowed profile URL.') . EOL);
  21                 goaway($_SESSION['return_url']);
  22                 // NOTREACHED
  23         }
  24
  25
  26         if(! $url) {
  27                 notice( t('Connect URL missing.') . EOL);
  28                 goaway($_SESSION['return_url']);
  29                 // NOTREACHED
  30         }
  31
  32
  33         $ret = probe_url($url);
  34
  35         if($ret['network'] === NETWORK_DFRN) {
  36                 if(strlen($a->path))
  37                         $myaddr = bin2hex($a->get_baseurl() . '/profile/' . $a->user['nickname']);
  38                 else
  39                         $myaddr = bin2hex($a->user['nickname'] . '@' . $a->get_hostname());
  40
  41                 goaway($ret['request'] . "&addr=$myaddr");
  42
  43                 // NOTREACHED
  44         }
  45         else {
  46                 if(get_config('system','dfrn_only')) {
  47                         notice( t('This site is not configured to allow communications with other networks.') . EOL);
  48                         notice( t('No compatible communication protocols or feeds were discovered.') . EOL);
  49                         goaway($_SESSION['return_url']);
  50                 }
  51         }
  52
  53         // This just confuses things, remove it
  54         if($ret['network'] === NETWORK_DIASPORA)
  55                 $ret['url'] = str_replace('?absolute=true','',$ret['url']);
  56
  57
  58         // do we have enough information?
  59
  60         if(! ((x($ret,'name')) && (x($ret,'poll')) && ((x($ret,'url')) || (x($ret,'addr'))))) {
  61                 notice( t('The profile address specified does not provide adequate information.') . EOL);
  62                 if(! x($ret,'poll'))
  63                         notice( t('No compatible communication protocols or feeds were discovered.') . EOL);
  64                 if(! x($ret,'name'))
  65                         notice( t('An author or name was not found.') . EOL);
  66                 if(! x($ret,'url'))
  67                         notice( t('No browser URL could be matched to this address.') . EOL);
  68                 if(strpos($url,'@') !== false)
  69                         notice('Unable to match @-style Identity Address with a known protocol or email contact');
  70                 goaway($_SESSION['return_url']);
  71         }
  72
  73         if($ret['network'] === NETWORK_OSTATUS && get_config('system','ostatus_disabled')) {
  74                 notice( t('The profile address specified belongs to a network which has been disabled on this site.') . EOL);
  75                 $ret['notify'] = '';
  76         }
  77
  78         if(! $ret['notify']) {
  79                 notice( t('Limited profile. This person will be unable to receive direct/personal notifications from you.') . EOL);
  80         }
  81
  82         $writeable = ((($ret['network'] === NETWORK_OSTATUS) && ($ret['notify'])) ? 1 : 0);
  83         $hidden = (($ret['network'] === NETWORK_MAIL) ? 1 : 0);
  84
  85         if($ret['network'] === NETWORK_MAIL) {
  86                 $writeable = 1;
  87
  88         }
  89         if($ret['network'] === NETWORK_DIASPORA)
  90                 $writeable = 1;
  91
  92         // check if we already have a contact
  93         // the poll url is more reliable than the profile url, as we may have
  94         // indirect links or webfinger links
  95
  96         $r = q("SELECT * FROM `contact` WHERE `uid` = %d AND `poll` = '%s' LIMIT 1",
  97                 intval(local_user()),
  98                 dbesc($ret['poll'])
  99         );
 100
 101         if(count($r)) {
 102                 // update contact
 103                 if($r[0]['rel'] == CONTACT_IS_FOLLOWER || ($network === NETWORK_DIASPORA && $r[0]['rel'] == CONTACT_IS_SHARING)) {
 104                         q("UPDATE `contact` SET `rel` = %d , `readonly` = 0 WHERE `id` = %d AND `uid` = %d LIMIT 1",
 105                                 intval(CONTACT_IS_FRIEND),
 106                                 intval($r[0]['id']),
 107                                 intval(local_user())
 108                         );
 109                 }
 110         }
 111         else {
 112
 113                 $new_relation = (($ret['network'] === NETWORK_MAIL) ? CONTACT_IS_FRIEND : CONTACT_IS_SHARING);
 114                 if($ret['network'] === NETWORK_DIASPORA)
 115                         $new_relation = CONTACT_IS_FOLLOWER;
 116
 117                 // create contact record
 118                 $r = q("INSERT INTO `contact` ( `uid`, `created`, `url`, `nurl`, `addr`, `alias`, `batch`, `notify`, `poll`, `poco`, `name`, `nick`, `photo`, `network`, `pubkey`, `rel`, `priority`,
 119                         `writable`, `hidden`, `blocked`, `readonly`, `pending` )
 120                         VALUES ( %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d, %d, %d, %d, 0, 0, 0 ) ",
 121                         intval(local_user()),
 122                         dbesc(datetime_convert()),
 123                         dbesc($ret['url']),
 124                         dbesc(normalise_link($ret['url'])),
 125                         dbesc($ret['addr']),
 126                         dbesc($ret['alias']),
 127                         dbesc($ret['batch']),
 128                         dbesc($ret['notify']),
 129                         dbesc($ret['poll']),
 130                         dbesc($ret['poco']),
 131                         dbesc($ret['name']),
 132                         dbesc($ret['nick']),
 133                         dbesc($ret['photo']),
 134                         dbesc($ret['network']),
 135                         dbesc($ret['pubkey']),
 136                         intval($new_relation),
 137                         intval($ret['priority']),
 138                         intval($writeable),
 139                         intval($hidden)
 140                 );
 141         }
 142
 143         $r = q("SELECT * FROM `contact` WHERE `url` = '%s' AND `uid` = %d LIMIT 1",
 144                 dbesc($ret['url']),
 145                 intval(local_user())
 146         );
 147
 148         if(! count($r)) {
 149                 notice( t('Unable to retrieve contact information.') . EOL);
 150                 goaway($_SESSION['return_url']);
 151                 // NOTREACHED
 152         }
 153
 154         $contact = $r[0];
 155         $contact_id  = $r[0]['id'];
 156
 157         require_once("Photo.php");
 158
 159         $photos = import_profile_photo($ret['photo'],local_user(),$contact_id);
 160
 161         $r = q("UPDATE `contact` SET `photo` = '%s',
 162                         `thumb` = '%s',
 163                         `micro` = '%s',
 164                         `name-date` = '%s',
 165                         `uri-date` = '%s',
 166                         `avatar-date` = '%s'
 167                         WHERE `id` = %d LIMIT 1
 168                 ",
 169                         dbesc($photos[0]),
 170                         dbesc($photos[1]),
 171                         dbesc($photos[2]),
 172                         dbesc(datetime_convert()),
 173                         dbesc(datetime_convert()),
 174                         dbesc(datetime_convert()),
 175                         intval($contact_id)
 176                 );
 177
 178
 179         // pull feed and consume it, which should subscribe to the hub.
 180
 181         proc_run('php',"include/poller.php","$contact_id");
 182
 183         // create a follow slap
 184
 185         $tpl = get_markup_template('follow_slap.tpl');
 186         $slap = replace_macros($tpl, array(
 187                 '$name' => $a->user['username'],
 188                 '$profile_page' => $a->get_baseurl() . '/profile/' . $a->user['nickname'],
 189                 '$photo' => $a->contact['photo'],
 190                 '$thumb' => $a->contact['thumb'],
 191                 '$published' => datetime_convert('UTC','UTC', 'now', ATOM_TIME),
 192                 '$item_id' => 'urn:X-dfrn:' . $a->get_hostname() . ':follow:' . random_string(),
 193                 '$title' => '',
 194                 '$type' => 'text',
 195                 '$content' => t('following'),
 196                 '$nick' => $a->user['nickname'],
 197                 '$verb' => ACTIVITY_FOLLOW,
 198                 '$ostat_follow' => ''
 199         ));
 200
 201         $r = q("SELECT `contact`.*, `user`.* FROM `contact` LEFT JOIN `user` ON `contact`.`uid` = `user`.`uid`
 202                         WHERE `user`.`uid` = %d AND `contact`.`self` = 1 LIMIT 1",
 203                         intval(local_user())
 204         );
 205
 206         if(count($r)) {
 207                 if(($contact['network'] == NETWORK_OSTATUS) && (strlen($contact['notify']))) {
 208                         require_once('include/salmon.php');
 209                         slapper($r[0],$contact['notify'],$slap);
 210                 }
 211                 if($contact['network'] == NETWORK_DIASPORA) {
 212                         require_once('include/diaspora.php');
 213                         $ret = diaspora_share($a->user,$contact);
 214                         logger('mod_follow: diaspora_share returns: ' . $ret);
 215                 }
 216         }
 217
 218         if(strstr($_SESSION['return_url'],'contacts'))
 219                 goaway($a->get_baseurl() . '/contacts/' . $contact_id);
 220
 221         goaway($_SESSION['return_url']);
 222         // NOTREACHED
 223 }