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| author | Waqas Hussain <waqas20@gmail.com> | 2009-06-04 19:55:56 +0500 |
|---|---|---|
| committer | Waqas Hussain <waqas20@gmail.com> | 2009-06-04 19:55:56 +0500 |
| commit | e60635aa94b327010fdd22ce32b162b420cfc4f4 (patch) | |
| tree | cc27980462a17c737f23238e1871eb186a4ce23a | |
| parent | 4ee16e78eb4e74bd20062a19c331d70c87323712 (diff) | |
| download | prosody-e60635aa94b327010fdd22ce32b162b420cfc4f4.tar.gz prosody-e60635aa94b327010fdd22ce32b162b420cfc4f4.zip | |
util.uuid: Added function seed(string) to allow further seeding of the PRNG
| -rw-r--r-- | util/uuid.lua | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/util/uuid.lua b/util/uuid.lua index a6dc0a1e..eca35134 100644 --- a/util/uuid.lua +++ b/util/uuid.lua @@ -28,10 +28,11 @@ local function new_random(x) 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 @@ function generate() -- 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; |