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authorWaqas Hussain <waqas20@gmail.com>2009-06-04 17:41:55 +0500
committerWaqas Hussain <waqas20@gmail.com>2009-06-04 17:41:55 +0500
commit27379bb148766adbfda904a5d786862141060fb7 (patch)
tree102702cbfaf08d1ce840cff95754503a5b5891db /util/uuid.lua
parent4b6c2ce142d7a00fb90de3dd6af86d47cda11ead (diff)
downloadprosody-27379bb148766adbfda904a5d786862141060fb7.tar.gz
prosody-27379bb148766adbfda904a5d786862141060fb7.zip
util.uuid: More uniqueness!
Diffstat (limited to 'util/uuid.lua')
-rw-r--r--util/uuid.lua21
1 files changed, 18 insertions, 3 deletions
diff --git a/util/uuid.lua b/util/uuid.lua
index fd21dfcc..e928259d 100644
--- a/util/uuid.lua
+++ b/util/uuid.lua
@@ -7,13 +7,28 @@
--
-
local m_random = math.random;
local tostring = tostring;
+local os_time = os.time;
+local os_clock = os.clock;
+local sha1 = require "util.hashes".sha1;
+
module "uuid"
+local last_uniq_time = 0;
+local function uniq_time()
+ local new_uniq_time = os_time();
+ if last_uniq_time >= new_uniq_time then new_uniq_time = last_uniq_time + 1; end
+ last_uniq_time = new_uniq_time;
+ return new_uniq_time;
+end
+
+local function new_random(x)
+ return sha1(x..os_clock()..tostring({}), true);
+end
+
function generate()
- return tostring(m_random(0, 99999999));
+ return new_random(uniq_time());
end
-return _M; \ No newline at end of file
+return _M;