view mod_omemo_all_access/mod_omemo_all_access.lua @ 5256:44f7edd4f845

mod_http_oauth2: Reject non-local hosts in more code paths We're not issuing tokens for users on remote hosts, we can't even authenticate them since they're remote. Thus the host is always the local module.host so no need to pass around the host in most cases or use it for anything but enforcing the same host.
author Kim Alvefur <zash@zash.se>
date Thu, 16 Mar 2023 17:52:10 +0100
parents 9505282ad24f
children
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-- OMEMO all access module
-- Copyright (c) 2017 Daniel Gultsch
--
-- This module is MIT/X11 licensed
--

local jid_bare = require "util.jid".bare;
local st = require "util.stanza"
local white_listed_namespace = "eu.siacs.conversations.axolotl."
local disco_feature_namespace = white_listed_namespace .. "whitelisted"

local mm = require "core.modulemanager";


-- COMPAT w/trunk
local pep_module_name = "pep";
if mm.get_modules_for_host then
	if mm.get_modules_for_host(module.host):contains("pep_simple") then
		pep_module_name = "pep_simple";
	end
end

local mod_pep = module:depends(pep_module_name);
local pep_data = mod_pep.module.save().data;

if not pep_data then
	module:log("error", "This module is not compatible with your version of mod_pep");
	if mm.get_modules_for_host then
		module:log("error", "Please use mod_pep_simple instead of mod_pep to continue using this module");
	end
	return false;
end

local function on_account_disco_info(event)
	(event.reply or event.stanza):tag("feature", {var=disco_feature_namespace}):up();
end

local function on_pep_request(event)
	local session, stanza = event.origin, event.stanza
	local payload = stanza.tags[1];
	if stanza.attr.type == 'get' then
		local node, requested_id;
		payload = payload.tags[1]
		if payload and payload.name == 'items' then
			node = payload.attr.node
			local item = payload.tags[1];
			if item and item.name == 'item' then
				requested_id = item.attr.id;
			end
		end
		if node and string.sub(node,1,string.len(white_listed_namespace)) == white_listed_namespace then
			local user = stanza.attr.to and jid_bare(stanza.attr.to) or session.username..'@'..session.host;
			local user_data = pep_data[user];
			if user_data and user_data[node] then
				local id, item = unpack(user_data[node]);
				if not requested_id or id == requested_id then
					local reply_stanza = st.reply(stanza)
						:tag('pubsub', {xmlns='http://jabber.org/protocol/pubsub'})
							:tag('items', {node=node})
								:add_child(item)
							:up()
						:up();
					session.send(reply_stanza);
					module:log("debug","provided access to omemo node",node)
					return true;
				end
			end
			module:log("debug","requested node was white listed", node)
		end
	end
end

module:hook("iq/bare/http://jabber.org/protocol/pubsub:pubsub", on_pep_request, 10);
module:hook("account-disco-info", on_account_disco_info);