From 49662179e9d41f96ec518376a99777773562d7c9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Adrien=20Gallou=C3=ABt?= <adrien@gallouet.fr>
Date: Fri, 27 Jan 2017 19:23:26 +0000
Subject: [PATCH] Refuse to create a new mud with a bad clock

---
 mud.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/mud.c b/mud.c
index 12a6d2c..3d01f36 100644
--- a/mud.c
+++ b/mud.c
@@ -249,7 +249,7 @@ mud_now(void)
     gettimeofday(&tv, NULL);
     now = (tv.tv_sec - MUD_EPOCH) * MUD_ONE_SEC + tv.tv_usec;
 #endif
-    return now & ((UINT64_C(1) << 48) - 1);
+    return now;
 }
 
 static uint64_t
@@ -721,6 +721,11 @@ mud_keyx_init(struct mud *mud, uint64_t now)
 struct mud *
 mud_create(int port, int v4, int v6, int aes, int mtu)
 {
+    uint64_t now = mud_now();
+
+    if (now >> 48)
+        return NULL;
+
     if (sodium_init() == -1)
         return NULL;