1 files changed, 119 insertions, 0 deletions
diff --git a/Zotlabs/Module/Id.php b/Zotlabs/Module/Id.php
new file mode 100644
index 000000000..cc43f0205
--- /dev/null
+++ b/Zotlabs/Module/Id.php
@@ -0,0 +1,119 @@
+<?php
+
+namespace Zotlabs\Module;
+
+/**
+ *
+ * Controller for responding to x-zot: protocol requests
+ * x-zot:_jkfRG85nJ-714zn-LW_VbTFW8jSjGAhAydOcJzHxqHkvEHWG2E0RbA_pbch-h4R63RG1YJZifaNzgccoLa3MQ/453c1678-1a79-4af7-ab65-6b012f6cab77
+ *  
+ */  
+
+use Zotlabs\Lib\Activity;
+use Zotlabs\Lib\ActivityStreams;
+use Zotlabs\Lib\LDSignatures;
+use Zotlabs\Zot6\HTTPSig;
+use Zotlabs\Web\Controller;
+use Zotlabs\Lib\Libzot;
+use Zotlabs\Lib\ThreadListener;
+use Zotlabs\Lib\IConfig;
+use Zotlabs\Lib\Enotify;
+use App;
+
+require_once('include/attach.php');
+require_once('include/bbcode.php');
+require_once('include/security.php');
+
+
+class Id extends Controller {
+
+	function init() {
+
+		if(Libzot::is_zot_request()) {
+
+			$conversation = false;
+
+			$request_portable_id = argv(1);
+			if(argc() > 2) {
+				$item_id = argv(2);
+			}
+
+			$portable_id = EMPTY_STR;
+
+			$sigdata = HTTPSig::verify(EMPTY_STR);
+			if($sigdata['portable_id'] && $sigdata['header_valid']) {
+				$portable_id = $sigdata['portable_id'];
+			}
+
+
+			$chan = channelx_by_hash($request_portable_id);
+
+			if($chan) {
+				$channel_id = $chan['channel_id'];
+				if(! $item_id) {
+					$handler = new Channel();
+					App::$argc = 2;
+					App::$argv[0] = 'channel';
+					App::$argv[1] = $chan['channel_address'];
+					$handler->init();
+				}
+			}
+			else {
+				http_status_exit(404, 'Not found');
+			}
+
+
+			$item_normal = " and item.item_hidden = 0 and item.item_type = 0 and item.item_unpublished = 0 and item.item_delayed = 0 and item.item_blocked = 0 ";
+
+			$sql_extra = item_permissions_sql(0);
+
+			$r = q("select * from item where mid like '%s' $item_normal $sql_extra and uid = %d limit 1",
+				dbesc('%/' . $item_id),
+				intval($channel_id)
+			);
+			if(! $r) {
+
+				$r = q("select * from item where mid like '%s' $item_normal and uid = %d limit 1",
+					dbesc('%/' . $item_id),
+					intval($channel_id)
+				);
+				if($r) {
+					http_status_exit(403, 'Forbidden');
+				}
+				http_status_exit(404, 'Not found');
+			}
+
+			if(! perm_is_allowed($chan['channel_id'],get_observer_hash(),'view_stream'))
+				http_status_exit(403, 'Forbidden');
+
+			xchan_query($r,true);
+			$items = fetch_post_tags($r,true);
+
+			$i = Activity::encode_item($items[0]);
+
+			if(! $i)
+				http_status_exit(404, 'Not found');
+
+			$x = array_merge(['@context' => [
+				ACTIVITYSTREAMS_JSONLD_REV,
+				'https://w3id.org/security/v1',
+				z_root() . ZOT_APSCHEMA_REV
+				]], $i);
+
+			$headers = [];
+			$headers['Content-Type'] = 'application/x-zot+json' ;
+			$ret = json_encode($x, JSON_UNESCAPED_SLASHES);
+			$headers['Digest'] = HTTPSig::generate_digest_header($ret);
+			$headers['(request-target)'] = strtolower($_SERVER['REQUEST_METHOD']) . ' ' . $_SERVER['REQUEST_URI'];
+			$h = HTTPSig::create_sig($headers,$chan['channel_prvkey'],channel_url($chan));
+			HTTPSig::set_headers($h);
+			echo $ret;
+			killme();
+
+		}
+
+	}
+
+}
+
+