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34 lines
1 KiB
Lua
34 lines
1 KiB
Lua
-- source: https://gist.github.com/jrus/3197011
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local random = math.random
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local function is_uuid_unexisting(uuid)
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for p, _ in minetest.get_auth_handler().iterate() do
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local e = mail.get_storage_entry(p)
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for _, m in ipairs(e.inbox) do
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if m.id == uuid then return false end
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end
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for _, m in ipairs(e.outbox) do
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if m.id == uuid then return false end
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end
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for _, m in ipairs(e.drafts) do
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if m.id == uuid then return false end
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end
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for _, m in ipairs(e.trash) do
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if m.id == uuid then return false end
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end
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end
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return true
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end
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function mail.new_uuid()
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local template ='xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'
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local candidate_uuid = ""
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repeat
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candidate_uuid = string.gsub(template, '[xy]',
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function (c)
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local v = (c == 'x') and random(0, 0xf) or random(8, 0xb)
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return string.format('%x', v)
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end)
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until is_uuid_unexisting(candidate_uuid)
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return candidate_uuid
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end
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