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<?php
@require_once('include/zot.php');
function magic_init(&$a) {
$url = ((x($_REQUEST,'url')) ? $_REQUEST['url'] : '');
$addr = ((x($_REQUEST,'addr')) ? $_REQUEST['addr'] : '');
$hash = ((x($_REQUEST,'hash')) ? $_REQUEST['hash'] : '');
$dest = ((x($_REQUEST,'dest')) ? $_REQUEST['dest'] : '');
if(local_user()) {
if($hash) {
$x = q("select xchan.xchan_url, hubloc.* from xchan left join hubloc on xchan_hash = hubloc_hash
where hublock_hash = '%s' and (hubloc_flags & %d) limit 1",
intval(HUBLOC_FLAGS_PRIMARY)
);
}
elseif($addr) {
$x = q("select hubloc.* from xchan left join hubloc on xchan_hash = hubloc_hash
where xchan_addr = '%s' and (hubloc_flags & %d) limit 1",
dbesc($addr),
intval(HUBLOC_FLAGS_PRIMARY)
);
}
if(! $x) {
notice( t('Channel not found.') . EOL);
return;
}
if($x[0]['hubloc_url'] === z_root()) {
$webbie = substr($x[0]['hubloc_addr'],0,strpos('@',$x[0]['hubloc_addr']));
switch($dest) {
case 'channel':
$desturl = z_root() . '/channel/' . $webbie;
break;
case 'photos':
$desturl = z_root() . '/photos/' . $webbie;
break;
case 'profile':
$desturl = z_root() . '/profile/' . $webbie;
break;
default:
$desturl = $dest;
break;
}
// We are already authenticated on this site and a registered observer.
// Just redirect.
goaway($desturl);
}
$token = random_string();
$token_sig = rsa_sign($token,$channel['channel_prvkey']);
$recip = array(array('guid' => $x[0]['hubloc_guid'],'guid_sig' => $x[0]['hubloc_guid_sig']));
$channel = $a->get_channel();
$channel['token'] = $token;
$channel['token_sig'] = $token_sig;
$hash = random_string();
$r = q("insert into verify ( type, channel, token, meta, created) values ('%s','%d','%s','%s','%s')",
dbesc('auth'),
intval($channel['channel_id']),
dbesc($token),
dbesc($hubloc['hubloc_hash']),
dbesc(datetime_convert())
);
$packet = zot_build_packet($channel,'auth',$recip,$x[0]['hubloc_sitekey'],$hash);
$result = zot_zot($x[0]['hubloc_callback'],$packet);
if($result['success']) {
$j = json_decode($result['body'],true);
if($j['iv']) {
$y = aes_unencapsulate($j,$channel['prvkey']);
$j = json_decode($y,true);
}
if($j['token'] && $j['ticket'] && $j['token'] === $token) {
$r = q("delete from verify where token = '%s' and type = '%s' and channel = %d limit 1",
dbesc($token),
dbesc('auth'),
intval($channel['channel_id'])
);
goaway($x[0]['callback'] . '?f=&ticket=' . $ticket . '&dest=' . $dest);
}
}
goaway($dest);
}
goaway(z_root());
}
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