view util/bitcompat.lua @ 14175:721823e085ec 13.0

net.stun: Fix parsing of STUN packets with 0-length attributes Not sure where the '20' came from. RFC 8489 defines attributes as simple TLVs, with the type+length header being always 16 bits (4 bytes). The branch for non-zero lengths already uses the correct header size.
author Matthew Wild <mwild1@gmail.com>
date Mon, 25 May 2026 13:29:28 +0100
parents de902cc0d46c
children
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-- Compatibility layer for bitwise operations

-- First try the bit32 lib
-- Lua 5.3 has it with compat enabled
-- Lua 5.2 has it by default
if rawget(_G, "bit32") then
	return _G.bit32;
end

do
	-- Lua 5.3 and 5.4 would be able to use native infix operators
	local ok, bitop = pcall(require, "prosody.util.bit53")
	if ok then
		return bitop;
	end
end

error "No bit module found. See https://prosody.im/doc/depends#bitop";