File

mod_s2s_log_certs/mod_s2s_log_certs.lua @ 3715:f03a023cd523

mod_http_muc_log: Compose page title from room data More flexible than composing the title from name and date in the controller. Also opens the door to using other room data fields.
author Kim Alvefur <zash@zash.se>
date Sun, 13 Oct 2019 16:16:14 +0200
parent 1787:663e5d923ef0
line wrap: on
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module:set_global();

local dm_load = require "util.datamanager".load;
local dm_store = require "util.datamanager".store;
local datetime = require "util.datetime".datetime;

local do_store = module:get_option_boolean(module:get_name().."_persist", false);
local digest_algo = module:get_option_string(module:get_name().."_digest", "sha1");

local function note_cert_digest(event)
	local session, remote_host, cert = event.session, event.host, event.cert;

	if not (remote_host and cert and cert.digest) then return end;
	local digest = cert:digest(digest_algo);

	local local_host = session.direction == "outgoing" and session.from_host or session.to_host;
	local chain_status = session.cert_chain_status;
	local identity_status = session.cert_identity_status;

	module:log("info", "%s has a %s %s certificate with %s: %s",
		remote_host,
		chain_status == "valid" and "trusted" or "untrusted",
		identity_status or "invalid",
		digest_algo:upper(),
		digest:upper():gsub("..",":%0"):sub(2));

	if do_store then
		local seen_certs = dm_load(remote_host, local_host, "s2s_certs") or {};

		digest = digest_algo..":"..digest;
		local this_cert = seen_certs[digest] or { first = datetime(); times = 0; }
		this_cert.last = datetime();
		this_cert.times = this_cert.times + 1;
		seen_certs[digest] = this_cert;
		chain_status = chain_status;
		identity_status = identity_status;
		dm_store(remote_host, local_host, "s2s_certs", seen_certs);
	end
end

if module.wrap_event then
	-- 0.10
	module:wrap_event("s2s-check-certificate", function (handlers, event_name, event_data)
		local ret = handlers(event_name, event_data);
		note_cert_digest(event_data);
		return ret;
	end);
else
	-- 0.9
	module:hook("s2s-check-certificate", note_cert_digest, 1000);
end
--[[
function module.add_host(module)
	module:hook("s2s-check-certificate", note_cert_digest, 1000);
end
]]