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path: root/mod/redir.php
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<?php

function redir_init(&$a) {

	$url = ((x($_GET,'url')) ? $_GET['url'] : '');

	// traditional DFRN

	if(local_user() && $a->argc > 1 && intval($a->argv[1])) {

		$cid = $a->argv[1];

		$r = q("SELECT * FROM `contact` WHERE `id` = %d AND `uid` = %d LIMIT 1",
			intval($cid),
			intval(local_user())
		);

		if((! count($r)) || ($r[0]['network'] !== NETWORK_DFRN))
			goaway(z_root());

		$dfrn_id = $orig_id = (($r[0]['issued-id']) ? $r[0]['issued-id'] : $r[0]['dfrn-id']);

		if($r[0]['duplex'] && $r[0]['issued-id']) {
			$orig_id = $r[0]['issued-id'];
			$dfrn_id = '1:' . $orig_id;
		}
		if($r[0]['duplex'] && $r[0]['dfrn-id']) {
			$orig_id = $r[0]['dfrn-id'];
			$dfrn_id = '0:' . $orig_id;
		}

		$sec = random_string();

		q("INSERT INTO `profile_check` ( `uid`, `cid`, `dfrn_id`, `sec`, `expire`)
			VALUES( %d, %s, '%s', '%s', %d )",
			intval(local_user()),
			intval($cid),
			dbesc($dfrn_id),
			dbesc($sec),
			intval(time() + 45)
		);

		logger('mod_redir: ' . $r[0]['name'] . ' ' . $sec, LOGGER_DEBUG); 
		$dest = (($url) ? '&destination_url=' . $url : '');
		goaway ($r[0]['poll'] . '?dfrn_id=' . $dfrn_id 
			. '&dfrn_version=' . DFRN_PROTOCOL_VERSION . '&type=profile&sec=' . $sec . $dest );
	}

	if(local_user())
		$handle = $a->user['nickname'] . '@' . substr($a->get_baseurl(),strpos($a->get_baseurl(),'://')+3);
	if(remote_user())
		$handle = $_SESSION['handle'];

	if($url) {
		$url = str_replace('{zid}','&zid=' . $handle,$url);
		goaway($url);
	}

	goaway(z_root());
}