view mod_auth_imap/auth_imap/mod_auth_imap.lua @ 5549:01a0b67a9afd

mod_http_oauth2: Add TODO about disabling password grant Per recommendation in draft-ietf-oauth-security-topics-23 it should at the very least be disabled by default. However since this is used by the Snikket web portal some care needs to be taken not to break this, unless it's already broken by other changes to this module.
author Kim Alvefur <zash@zash.se>
date Fri, 16 Jun 2023 00:06:53 +0200
parents 2cce28fe806b
children
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-- IMAP authentication backend for Prosody
--
-- Copyright (C) 2011 FIMXE from hg annotate -u

local name = "IMAP SASL";
local log = require "util.logger".init("auth_imap");

local imap_host = module:get_option_string("imap_auth_host", "localhost");
local imap_port = module:get_option_number("imap_auth_port");

local imap_service_realm = module:get_option_string("imap_auth_realm", module:get_option("sasl_realm"));
local imap_service_name = module:get_option_string("imap_auth_service_name");
local append_host = module:get_option_boolean("auth_append_host");

local verify_certificate = module:get_option_boolean("auth_imap_verify_certificate", true);
local ssl_params = module:get_option("auth_imap_ssl", {
	mode = "client", protocol = "sslv23";
	capath = "/etc/ssl/certs";
	options = { "no_sslv2", "no_sslv3" };
	verify = verify_certificate and { "peer", "fail_if_no_peer_cert" } or nil;
	ciphers = "HIGH:!DSS:!aNULL@STRENGTH";
});

local new_imap_sasl = module:require "sasl_imap".new;

local new_sasl = function(realm)
	return new_imap_sasl(
		imap_service_realm or realm,
		imap_service_name or "xmpp",
		imap_host, imap_port,
		ssl_params, append_host
	);
end

do
	local s = new_sasl(module.host)
	assert(s, "Could not create a new SASL object");
	assert(s.mechanisms, "SASL object has no mechanims method");
	local m = {};
	for k in pairs(s:mechanisms()) do
		table.insert(m, k);
	end
	log("debug", "Mechanims found: %s", table.concat(m, ", "));
end

provider = {
	name = module.name:gsub("^auth_","");
};

function provider.test_password(username, password)
	return nil, "Legacy auth not supported with "..name;
end

function provider.get_password(username)
	return nil, "Passwords unavailable for "..name;
end

function provider.set_password(username, password)
	return nil, "Passwords unavailable for "..name;
end

function provider.user_exists(username)
	-- FIXME
	return true
end

function provider.create_user(username, password)
	return nil, "Account creation/modification not available with "..name;
end

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

module:add_item("auth-provider", provider);