1 files changed, 53 insertions, 0 deletions
diff --git a/Zotlabs/Module/Owa.php b/Zotlabs/Module/Owa.php
new file mode 100644
index 000000000..4b0d855c5
--- /dev/null
+++ b/Zotlabs/Module/Owa.php
@@ -0,0 +1,53 @@
+<?php
+
+namespace Zotlabs\Module;
+
+/**
+ * OpenWebAuth verifier and token generator
+ * See https://macgirvin.com/wiki/mike/OpenWebAuth/Home
+ * Requests to this endpoint should be signed using HTTP Signatures
+ * using the 'Authorization: Signature' authentication method
+ * If the signature verifies a token is returned. 
+ *
+ * This token may be exchanged for an authenticated cookie. 
+ */
+
+class Owa extends \Zotlabs\Web\Controller {
+
+	function init() {
+
+		$ret = [ 'success' => false ];
+
+		foreach([ 'REDIRECT_REMOTE_USER', 'HTTP_AUTHORIZATION' ] as $head) {
+			if(array_key_exists($head,$_SERVER) && substr(trim($_SERVER[$head]),0,9) === 'Signature') {
+				if($head !== 'HTTP_AUTHORIZATION') {
+					$_SERVER['HTTP_AUTHORIZATION'] = $_SERVER[$head];
+					continue;
+				}
+
+				$sigblock = \Zotlabs\Web\HTTPSig::parse_sigheader($_SERVER[$head]);
+				if($sigblock) {
+					$keyId = $sigblock['keyId'];
+
+					if($keyId) {
+						$r = q("select * from hubloc left join xchan on hubloc_hash = xchan_hash 
+							where hubloc_addr = '%s' limit 1",
+							dbesc(str_replace('acct:','',$keyId))
+						);
+						if($r) {
+							$hubloc = $r[0];
+							$verified = \Zotlabs\Web\HTTPSig::verify('',$hubloc['xchan_pubkey']);	
+							if($verified && $verified['header_signed'] && $verified['header_valid']) {
+								$ret['success'] = true;
+								$token = random_string(32);
+								\Zotlabs\Zot\Verify::create('owt',0,$token,$r[0]['hubloc_addr']);
+								$ret['token'] = $token;
+							}
+						}
+					}
+				}
+			}
+		}
+		json_return_and_die($ret,'application/x-zot+json');
+	}
+}