From bb8b3b92913832750a393533f491725b4330a8e1 Mon Sep 17 00:00:00 2001
From: zotlabs <mike@macgirvin.com>
Date: Tue, 6 Nov 2018 20:44:40 -0800
Subject: this is brutal

---
 Zotlabs/Module/Channel.php | 44 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 44 insertions(+)

(limited to 'Zotlabs/Module/Channel.php')

diff --git a/Zotlabs/Module/Channel.php b/Zotlabs/Module/Channel.php
index f1537ed15..12d87885f 100644
--- a/Zotlabs/Module/Channel.php
+++ b/Zotlabs/Module/Channel.php
@@ -6,6 +6,8 @@ namespace Zotlabs\Module;
 use App;
 use Zotlabs\Web\Controller;
 use Zotlabs\Lib\PermissionDescription;
+use Zotlabs\Zot6\HTTPSig;
+use Zotlabs\Lib\Libzot;
 
 require_once('include/items.php');
 require_once('include/security.php');
@@ -43,6 +45,48 @@ class Channel extends Controller {
 		$profile = 0;
 		$channel = App::get_channel();
 
+		if((local_channel()) && (argc() > 2) && (argv(2) === 'view')) {
+            $which = $channel['channel_address'];
+            $profile = argv(1);
+        }
+
+		$channel = channelx_by_nick($which);
+        if(! $channel) {
+            http_status_exit(404, 'Not found');
+        }
+
+		// handle zot6 channel discovery 
+
+		if(Libzot::is_zot_request()) {
+	
+			$sigdata = HTTPSig::verify(file_get_contents('php://input'));
+
+			if($sigdata && $sigdata['signer'] && $sigdata['header_valid']) {
+				$data = json_encode(Libzot::zotinfo([ 'address' => $channel['channel_address'], 'target_url' => $sigdata['signer'] ]));
+				$s = q("select site_crypto, hubloc_sitekey from site left join hubloc on hubloc_url = site_url where hubloc_id_url = '%s' and hubloc_network = 'zot6' limit 1",
+					dbesc($sigdata['signer'])
+				);
+
+				if($s) {
+					$data = json_encode(crypto_encapsulate($data,$s[0]['hubloc_sitekey'],Libzot::best_algorithm($s[0]['site_crypto'])));
+				}
+			}
+			else {
+				$data = json_encode(Libzot::zotinfo([ 'address' => $channel['channel_address'] ]));
+			}
+
+			$headers = [ 
+				'Content-Type'     => 'application/x-zot+json', 
+				'Digest'           => HTTPSig::generate_digest_header($data),
+				'(request-target)' => strtolower($_SERVER['REQUEST_METHOD']) . ' ' . $_SERVER['REQUEST_URI']
+			 ];
+			$h = HTTPSig::create_sig($headers,$channel['channel_prvkey'],channel_url($channel));
+			HTTPSig::set_headers($h);
+			echo $data;
+			killme();
+		}
+
+
 		if((local_channel()) && (argc() > 2) && (argv(2) === 'view')) {
 			$which = $channel['channel_address'];
 			$profile = argv(1);
-- 
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