Software / code / prosody
Changeset
1304:0a49759464e0
util.uuid: Added function seed(string) to allow further seeding of the PRNG
| author | Waqas Hussain <waqas20@gmail.com> |
|---|---|
| date | Thu, 04 Jun 2009 19:55:56 +0500 |
| parents | 1303:2170e2c0d57a |
| children | 1305:37657578ea85 |
| files | util/uuid.lua |
| diffstat | 1 files changed, 5 insertions(+), 3 deletions(-) [+] |
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--- a/util/uuid.lua Thu Jun 04 18:04:26 2009 +0500 +++ b/util/uuid.lua Thu Jun 04 19:55:56 2009 +0500 @@ -28,10 +28,11 @@ end local buffer = new_random(uniq_time()); +local function _seed(x) + buffer = new_random(buffer..x); +end local function get_nibbles(n) - if #buffer < n then - buffer = new_random(buffer..uniq_time()); - end + if #buffer < n then seed(uniq_time()); end local r = buffer:sub(0, n); buffer = buffer:sub(n+1); return r; @@ -44,5 +45,6 @@ -- generate RFC 4122 complaint UUIDs (version 4 - random) return get_nibbles(8).."-"..get_nibbles(4).."-4"..get_nibbles(3).."-"..(get_twobits())..get_nibbles(3).."-"..get_nibbles(12); end +seed = _seed; return _M;
