view misc/sasl/example.lua @ 4651:8231774f5bfd

mod_cloud_notify_encrypted: Ensure body substring remains valid UTF-8 The `body:sub()` call risks splitting the string in the middle of a multi-byte UTF-8 sequence. This should have been caught by util.stanza validation, but that would have caused some havoc, at the very least causing the notification to not be sent. There have been no reports of this happening. Likely because this module isn't widely deployed among users with languages that use many longer UTF-8 sequences. The util.encodings.utf8.valid() function is O(n) where only the last sequence really needs to be checked, but it's in C and expected to be fast.
author Kim Alvefur <zash@zash.se>
date Sun, 22 Aug 2021 13:22:59 +0200
parents 7d2fcc7a15f7
children
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local method = {}
local method_mt = { __index = method }

-- This should return a set of supported mechanisms
function method:mechanisms()
	return {
		["OAUTH-SOMETHING"] = true;
	}
end

-- Called when a mechanism is selecetd
function method:select(mechanism)
	return mechanism == "OAUTH-SOMETHING";
end

-- Called for each message received
function method:process(message)
	-- parse the message
	if false then
		-- To send a SASL challenge:
		return "challenge", "respond-to-this";
	end

	if false then
		-- To fail, send:
		return "failure", "not-authorized", "Helpful error message here";
	end

	self.username = "someone";
	return "success";
end

local function new_sasl()
	return setmetatable({}, method_mt);
end

function method:clean_clone()
	return setmetatable({}, method_mt);
end

local provider = {}

function provider.get_sasl_handler()
	return new_sasl();
end

module:provides("auth", provider);