# HG changeset patch
# User Kim Alvefur <zash@zash.se>
# Date 1454257635 -3600
# Node ID 51cf09bb74eb0f25934259fef460cc07fd3b322d
# Parent  bd29742fa1baba5c3169efd7e2b38d685642a15c
util.random: Restore friendlier error from 0.9/util.uuid

diff -r bd29742fa1ba -r 51cf09bb74eb util/random.lua
--- a/util/random.lua	Fri Jan 29 14:52:38 2016 +0100
+++ b/util/random.lua	Sun Jan 31 17:27:15 2016 +0100
@@ -6,7 +6,7 @@
 -- COPYING file in the source package for more information.
 --
 
-local urandom = assert(io.open("/dev/urandom", "r"));
+local urandom, urandom_err = io.open("/dev/urandom", "r");
 
 local function seed()
 end
@@ -15,6 +15,12 @@
 	return urandom:read(n);
 end
 
+if not urandom then
+	function bytes()
+		error("Unable to obtain a secure random number generator, please see https://prosody.im/doc/random ("..urandom_err..")");
+	end
+end
+
 return {
 	seed = seed;
 	bytes = bytes;