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authorKim Alvefur <zash@zash.se>2019-05-18 17:28:21 +0200
committerKim Alvefur <zash@zash.se>2019-05-18 17:28:21 +0200
commitb0459a771b38a2788949810aeb4a06ad32110e15 (patch)
treecd21fcbaaf5001bbb68036624fdcc975e7f7bee9
parent15259577d158d275cea8658d2d6bb5bc50be7738 (diff)
downloadprosody-b0459a771b38a2788949810aeb4a06ad32110e15.tar.gz
prosody-b0459a771b38a2788949810aeb4a06ad32110e15.zip
util.random: Handle unlikely read errors from /dev/urandom (see #1313)
-rw-r--r--util/random.lua6
1 files changed, 5 insertions, 1 deletions
diff --git a/util/random.lua b/util/random.lua
index d8a84514..8ae06b49 100644
--- a/util/random.lua
+++ b/util/random.lua
@@ -12,7 +12,11 @@ if ok then return crand; end
local urandom, urandom_err = io.open("/dev/urandom", "r");
local function bytes(n)
- return urandom:read(n);
+ local data, err = urandom:read(n);
+ if not data then
+ error("Unable to retrieve data from secure random number generator (/dev/urandom): "..err);
+ end
+ return data;
end
if not urandom then