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         $uid = local_user();
  14         $url = $orig_url = notags(trim($_REQUEST['url']));
  15         $return_url = $_SESSION['return_url'];
  16
  17
  18         // remove ajax junk, e.g. Twitter
  19
  20         $url = str_replace('/#!/','/',$url);
  21
  22         if(! allowed_url($url)) {
  23                 notice( t('Disallowed profile URL.') . EOL);
  24                 goaway($return_url);
  25                 // NOTREACHED
  26         }
  27
  28
  29         if(! $url) {
  30                 notice( t('Connect URL missing.') . EOL);
  31                 goaway($return_url);
  32                 // NOTREACHED
  33         }
  34
  35         $arr = array('url' => $url, 'contact' => array());
  36
  37         call_hooks('follow', $arr);
  38
  39         if(x($arr['contact'],'name'))
  40                 $ret = $arr['contact'];
  41         else
  42                 $ret = probe_url($url);
  43
  44         if($ret['network'] === NETWORK_DFRN) {
  45                 if(strlen($a->path))
  46                         $myaddr = bin2hex($a->get_baseurl() . '/profile/' . $a->user['nickname']);
  47                 else
  48                         $myaddr = bin2hex($a->user['nickname'] . '@' . $a->get_hostname());
  49
  50                 goaway($ret['request'] . "&addr=$myaddr");
  51
  52                 // NOTREACHED
  53         }
  54         else {
  55                 if(get_config('system','dfrn_only')) {
  56                         notice( t('This site is not configured to allow communications with other networks.') . EOL);
  57                         notice( t('No compatible communication protocols or feeds were discovered.') . EOL);
  58                         goaway($return_url);
  59                 }
  60         }
  61
  62         // This extra param just confuses things, remove it
  63         if($ret['network'] === NETWORK_DIASPORA)
  64                 $ret['url'] = str_replace('?absolute=true','',$ret['url']);
  65
  66
  67         // do we have enough information?
  68
  69         if(! ((x($ret,'name')) && (x($ret,'poll')) && ((x($ret,'url')) || (x($ret,'addr'))))) {
  70                 notice( t('The profile address specified does not provide adequate information.') . EOL);
  71                 if(! x($ret,'poll'))
  72                         notice( t('No compatible communication protocols or feeds were discovered.') . EOL);
  73                 if(! x($ret,'name'))
  74                         notice( t('An author or name was not found.') . EOL);
  75                 if(! x($ret,'url'))
  76                         notice( t('No browser URL could be matched to this address.') . EOL);
  77                 if(strpos($url,'@') !== false) {
  78                         notice( t('Unable to match @-style Identity Address with a known protocol or email contact.') . EOL);
  79                         notice( t('Use mailto: in front of address to force email check.') . EOL);
  80                 }
  81                 goaway($return_url);
  82         }
  83
  84         if($ret['network'] === NETWORK_OSTATUS && get_config('system','ostatus_disabled')) {
  85                 notice( t('The profile address specified belongs to a network which has been disabled on this site.') . EOL);
  86                 $ret['notify'] = '';
  87         }
  88
  89         if(! $ret['notify']) {
  90                 notice( t('Limited profile. This person will be unable to receive direct/personal notifications from you.') . EOL);
  91         }
  92
  93         $writeable = ((($ret['network'] === NETWORK_OSTATUS) && ($ret['notify'])) ? 1 : 0);
  94         $hidden = (($ret['network'] === NETWORK_MAIL) ? 1 : 0);
  95
  96         if($ret['network'] === NETWORK_MAIL) {
  97                 $writeable = 1;
  98
  99         }
 100         if($ret['network'] === NETWORK_DIASPORA)
 101                 $writeable = 1;
 102
 103         // check if we already have a contact
 104         // the poll url is more reliable than the profile url, as we may have
 105         // indirect links or webfinger links
 106
 107         $r = q("SELECT * FROM `contact` WHERE `uid` = %d AND `poll` = '%s' LIMIT 1",
 108                 intval($uid),
 109                 dbesc($ret['poll'])
 110         );
 111
 112
 113         if(count($r)) {
 114                 // update contact
 115                 if($r[0]['rel'] == CONTACT_IS_FOLLOWER || ($network === NETWORK_DIASPORA && $r[0]['rel'] == CONTACT_IS_SHARING)) {
 116                         q("UPDATE `contact` SET `rel` = %d , `readonly` = 0 WHERE `id` = %d AND `uid` = %d LIMIT 1",
 117                                 intval(CONTACT_IS_FRIEND),
 118                                 intval($r[0]['id']),
 119                                 intval($uid)
 120                         );
 121                 }
 122         }
 123         else {
 124
 125                 $new_relation = (($ret['network'] === NETWORK_MAIL) ? CONTACT_IS_FRIEND : CONTACT_IS_SHARING);
 126                 if($ret['network'] === NETWORK_DIASPORA)
 127                         $new_relation = CONTACT_IS_FOLLOWER;
 128
 129                 // create contact record
 130                 $r = q("INSERT INTO `contact` ( `uid`, `created`, `url`, `nurl`, `addr`, `alias`, `batch`, `notify`, `poll`, `poco`, `name`, `nick`, `photo`, `network`, `pubkey`, `rel`, `priority`,
 131                         `writable`, `hidden`, `blocked`, `readonly`, `pending` )
 132                         VALUES ( %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d, %d, %d, %d, 0, 0, 0 ) ",
 133                         intval($uid),
 134                         dbesc(datetime_convert()),
 135                         dbesc($ret['url']),
 136                         dbesc(normalise_link($ret['url'])),
 137                         dbesc($ret['addr']),
 138                         dbesc($ret['alias']),
 139                         dbesc($ret['batch']),
 140                         dbesc($ret['notify']),
 141                         dbesc($ret['poll']),
 142                         dbesc($ret['poco']),
 143                         dbesc($ret['name']),
 144                         dbesc($ret['nick']),
 145                         dbesc($ret['photo']),
 146                         dbesc($ret['network']),
 147                         dbesc($ret['pubkey']),
 148                         intval($new_relation),
 149                         intval($ret['priority']),
 150                         intval($writeable),
 151                         intval($hidden)
 152                 );
 153         }
 154
 155         $r = q("SELECT * FROM `contact` WHERE `url` = '%s' AND `uid` = %d LIMIT 1",
 156                 dbesc($ret['url']),
 157                 intval($uid)
 158         );
 159
 160         if(! count($r)) {
 161                 notice( t('Unable to retrieve contact information.') . EOL);
 162                 goaway($return_url);
 163                 // NOTREACHED
 164         }
 165
 166         $contact = $r[0];
 167         $contact_id  = $r[0]['id'];
 168
 169
 170         $g = q("select def_gid from user where uid = %d limit 1",
 171                 intval($uid)
 172         );
 173         if($g && intval($g[0]['def_gid'])) {
 174                 require_once('include/group.php');
 175                 group_add_member($uid,'',$contact_id,$g[0]['def_gid']);
 176         }
 177
 178         require_once("Photo.php");
 179
 180         $photos = import_profile_photo($ret['photo'],$uid,$contact_id);
 181
 182         $r = q("UPDATE `contact` SET `photo` = '%s',
 183                         `thumb` = '%s',
 184                         `micro` = '%s',
 185                         `name-date` = '%s',
 186                         `uri-date` = '%s',
 187                         `avatar-date` = '%s'
 188                         WHERE `id` = %d LIMIT 1
 189                 ",
 190                         dbesc($photos[0]),
 191                         dbesc($photos[1]),
 192                         dbesc($photos[2]),
 193                         dbesc(datetime_convert()),
 194                         dbesc(datetime_convert()),
 195                         dbesc(datetime_convert()),
 196                         intval($contact_id)
 197                 );
 198
 199
 200         // pull feed and consume it, which should subscribe to the hub.
 201
 202         proc_run('php',"include/poller.php","$contact_id");
 203
 204         // create a follow slap
 205
 206         $tpl = get_markup_template('follow_slap.tpl');
 207         $slap = replace_macros($tpl, array(
 208                 '$name' => $a->user['username'],
 209                 '$profile_page' => $a->get_baseurl() . '/profile/' . $a->user['nickname'],
 210                 '$photo' => $a->contact['photo'],
 211                 '$thumb' => $a->contact['thumb'],
 212                 '$published' => datetime_convert('UTC','UTC', 'now', ATOM_TIME),
 213                 '$item_id' => 'urn:X-dfrn:' . $a->get_hostname() . ':follow:' . random_string(),
 214                 '$title' => '',
 215                 '$type' => 'text',
 216                 '$content' => t('following'),
 217                 '$nick' => $a->user['nickname'],
 218                 '$verb' => ACTIVITY_FOLLOW,
 219                 '$ostat_follow' => ''
 220         ));
 221
 222         $r = q("SELECT `contact`.*, `user`.* FROM `contact` LEFT JOIN `user` ON `contact`.`uid` = `user`.`uid`
 223                         WHERE `user`.`uid` = %d AND `contact`.`self` = 1 LIMIT 1",
 224                         intval($uid)
 225         );
 226
 227         if(count($r)) {
 228                 if(($contact['network'] == NETWORK_OSTATUS) && (strlen($contact['notify']))) {
 229                         require_once('include/salmon.php');
 230                         slapper($r[0],$contact['notify'],$slap);
 231                 }
 232                 if($contact['network'] == NETWORK_DIASPORA) {
 233                         require_once('include/diaspora.php');
 234                         $ret = diaspora_share($a->user,$contact);
 235                         logger('mod_follow: diaspora_share returns: ' . $ret);
 236                 }
 237         }
 238
 239         if(strstr($return_url,'contacts'))
 240                 goaway($a->get_baseurl() . '/contacts/' . $contact_id);
 241
 242         goaway($return_url);
 243         // NOTREACHED
 244 }