From 2abcf76ec17a9a7754c399cdde9a4449308a4b02 Mon Sep 17 00:00:00 2001
From: Friendika <info@friendika.com>
Date: Thu, 4 Aug 2011 22:37:45 -0700
Subject: salmon protocol changes magicsig draft-experimental, fixes to hostxrd

---
 mod/hostxrd.php | 11 +++++++++++
 mod/salmon.php  | 19 +++++++++++++------
 mod/xrd.php     |  2 +-
 3 files changed, 25 insertions(+), 7 deletions(-)
 create mode 100644 mod/hostxrd.php

(limited to 'mod')

diff --git a/mod/hostxrd.php b/mod/hostxrd.php
new file mode 100644
index 000000000..c7861d26d
--- /dev/null
+++ b/mod/hostxrd.php
@@ -0,0 +1,11 @@
+<?php
+
+function hostxrd_init(&$a) {
+	header('Access-Control-Allow-Origin: *');
+	header("Content-type: text/xml");
+	$tpl = file_get_contents('view/xrd_host.tpl');
+	echo str_replace(array('$zroot','$domain'),array(z_root(),z_path()),$tpl);
+	session_write_close();
+	exit();
+
+}
\ No newline at end of file
diff --git a/mod/salmon.php b/mod/salmon.php
index 56ac071b0..300ad8746 100644
--- a/mod/salmon.php
+++ b/mod/salmon.php
@@ -72,12 +72,16 @@ function salmon_post(&$a) {
 	$encoding = $base->encoding;
 	$alg = $base->alg;
 
-	// If we're talking to status.net or one of their ilk, they aren't following the magic envelope spec
-	// and only signed the data element. We'll be nice and let them validate anyway. 
+	// Salmon magic signatures have evolved and there is no way of knowing ahead of time which
+	// flavour we have. We'll try and verify it regardless.
 
 	$stnet_signed_data = $data;
+
 	$signed_data = $data  . '.' . base64url_encode($type) . '.' . base64url_encode($encoding) . '.' . base64url_encode($alg);
 
+	$compliant_format = str_replace('=','',$signed_data);
+
+
 	// decode the data
 	$data = base64url_decode($data);
 
@@ -150,13 +154,16 @@ function salmon_post(&$a) {
     $rsa->exponent = new Math_BigInteger($e, 256);
 
 	// We should have everything we need now. Let's see if it verifies.
-	// If it fails with the proper data format, try again using just the data
-	// (e.g. status.net)
 
-    $verify = $rsa->verify($signed_data,$signature);
+    $verify = $rsa->verify($compliant_format,$signature);
+
+	if(! $verify) {
+		logger('mod-salmon: message did not verify using protocol. Trying padding hack.');
+	    $verify = $rsa->verify($signed_data,$signature);
+    }
 
 	if(! $verify) {
-		logger('mod-salmon: message did not verify using protocol. Trying statusnet hack.');
+		logger('mod-salmon: message did not verify using padding. Trying old statusnet hack.');
 	    $verify = $rsa->verify($stnet_signed_data,$signature);
     }
 
diff --git a/mod/xrd.php b/mod/xrd.php
index 4889639f0..c96c18f3c 100644
--- a/mod/xrd.php
+++ b/mod/xrd.php
@@ -23,7 +23,7 @@ function xrd_content(&$a) {
 	if(! count($r))
 		killme();
 
-	$salmon_key = salmon_key($r[0]['spubkey']);
+	$salmon_key = str_replace('=','',salmon_key($r[0]['spubkey']));
 
 	header('Access-Control-Allow-Origin: *');
 	header("Content-type: text/xml");
-- 
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