mod_voipms: New Module to send and receive SMS/MMS via VoIP.ms APIs. diff --git a/mod_voipms/README.md b/mod_voipms/README.md new file mode 100644 --- /dev/null +++ b/mod_voipms/README.md @@ -0,0 +1,51 @@ +--- +labels: +- 'Stage-Alpha' +- 'Type-Web' +summary: Send and receive SMS/MMS via VoIP.ms APIs. +rockspec: + build: + modules: + mod_voipms: mod_voipms.lua +... + +Introduction +============ + +This is a Prosody module to map JIDs to DIDs on VoIP.ms and support sending/receiving SMS/MMS. + +Configuration +============= + +| option | type | default | +|-----------------------|--------|---------| +| voipms\_api\_username | string | nil | +| voipms\_api\_password | string | nil | +| voipms\_query\_key | string | nil | +| voipms\_jid\_map | table | nil | +``` +VirtualHost "sms.example.com" +modules_enabled = { + "voipms"; +} +voipms_api_username = john@example.com -- E-mail registered with VoIP.ms +voipms_api_password = abcd1234 -- API password configured in VoIP.ms +voipms_query_key = some_query_key -- query param 'key' part of your URL callback +voipms_jid_map = { + ["your_jid@your_domain.com"] = "+1234567890" +} +``` + +HTTP +==== + +The module is served on Prosody's default HTTP ports at the path /voipms. More details on configuring HTTP modules in Prosody can be found in the HTTP documentation. + +VoIP.ms Webhook URL +=================== + +This module receives the VoIP.ms Webhook URL (POST) at the /voipms endpoint. It uses the sendSMS/sendMMS GET methods against the VoIP.ms APIs. This is an example webhook to use in VoIP.ms: + +``` +https://sms.example.com/voipms?key=some_query_key +``` diff --git a/mod_voipms/mod_voipms.lua b/mod_voipms/mod_voipms.lua new file mode 100644 --- /dev/null +++ b/mod_voipms/mod_voipms.lua @@ -0,0 +1,166 @@ +local http = require "net.http" +local json = require "util.json" +local st = require "util.stanza" + +local api_username = module:get_option_string("voipms_api_username") +local api_password = module:get_option_string("voipms_api_password") +local query_key = module:get_option("voipms_query_key") +local jid_map = module:get_option("voipms_jid_map") or {} +local rest_endpoint = "https://voip.ms/api/v1/rest.php" + +if not api_username or not api_password or not query_key then + module:log("error", "Missing required config values (voipms_api_username, voipms_api_password, voipms_query_key)") + return +end + +module:depends("http") + +local function normalize_number(num) + if not num then return nil end + if num:sub(1, 1) ~= "+" then + return "+1" .. num + end + return num +end + +local function extract_query_key(event) + return (event.request.url.query or ""):match("key=([^&]+)") +end + +module:provides("http", { + route = { + ["POST"] = function(event) + local req = event.request + local body = req.body or "" + + if extract_query_key(event) ~= query_key then + module:log("warn", "Unauthorized webhook: missing or invalid key") + return { status_code = 403 } + end + + local json_payload, err = json.decode(body) + if not json_payload then + module:log("warn", "Invalid JSON: %s", err or "unknown error") + return { status_code = 400 } + end + + local payload = json_payload.data and json_payload.data.payload + if not payload then + module:log("warn", "Missing payload in JSON") + return { status_code = 400 } + end + + local from = payload.from and payload.from.phone_number + local to_list = payload.to or {} + local to = #to_list > 0 and to_list[1].phone_number or nil + + if not from or not to then + module:log("warn", "Missing phone numbers (from: %s, to: %s)", tostring(from), tostring(to)) + return { status_code = 400 } + end + + local normalized_to = normalize_number(to) + local target_jid = nil + + for jid, did in pairs(jid_map) do + if normalize_number(did) == normalized_to then + target_jid = jid + break + end + end + + if not target_jid then + module:log("warn", "No JID mapping for DID %s", normalized_to) + return { status_code = 404 } + end + + local normalized_from = normalize_number(from) + local message_text = payload.text or "" + + local message = st.message({ + from = normalized_from .. "@" .. module.host, + to = target_jid, + type = "chat" + }):tag("body"):text(message_text):up() + + if payload.media and #payload.media > 0 then + for _, media_item in ipairs(payload.media) do + if media_item.url then + message_text = message_text .. "\n" .. media_item.url + message:tag("x", { xmlns = "jabber:x:oob" }) + :tag("url"):text(media_item.url):up():up() + end + end + end + + module:send(message) + module:log("info", "Delivered SMS from %s to %s", normalized_from, target_jid) + + return { status_code = 204 } + end + } +}) + +module:hook("message/bare", function(event) + local stanza = event.stanza + if stanza.attr.type ~= "chat" then return end + + local from_jid = stanza.attr.from + local to_jid = stanza.attr.to + local body = stanza:get_child_text("body") + if not body or body == "" then return end + + local from_number = jid_map[from_jid] + if not from_number then + module:log("warn", "No DID mapping for JID %s", from_jid) + return + end + + local to_number = to_jid:match("^([^@]+)") + if not to_number then + module:log("warn", "Malformed JID in message.to: %s", to_jid) + return + end + + to_number = normalize_number(to_number) + + local media_urls = {} + for line in body:gmatch("[^\r\n]+") do + if line:match("^https?://") then + table.insert(media_urls, line) + end + end + + local method = (#media_urls > 0) and "sendMMS" or "sendSMS" + local query = { + api_username = api_username, + api_password = api_password, + method = method, + did = from_number, + dst = to_number, + message = body + } + + if method == "sendMMS" then + for i, url in ipairs(media_urls) do + query["media_url[" .. (i - 1) .. "]"] = url + end + end + + local query_str = http.formencode(query) + + http.request(rest_endpoint .. "?" .. query_str, { + method = "GET"; + }, function(response_body, code) + if code == 200 then + local resp, err = json.decode(response_body) + if not resp or resp.status ~= "success" then + module:log("error", "Failed to send %s: %s", method, err or (resp and resp.status) or "unknown") + else + module:log("info", "Sent %s from %s to %s", method, from_number, to_number) + end + else + module:log("error", "HTTP error sending %s: code %s", method, tostring(code)) + end + end) +end)

-- mod_reminders
--
-- Copyright (C) 2020 Marcos de Vera Piquero <marcos@tenak.net>
--
-- This file is MIT/X11 licensed.
--
-- A module to support ProtoXEP: Reminders
--

local id = require "util.id"
local datetime = require"util.datetime";
local errors = require"util.error";
local jid = require"util.jid";
local st = require"util.stanza";
local os_time = os.time;

local xmlns_reminders = "urn:xmpp:reminders:0";

local reminders_store = module:open_store(xmlns_reminders, "keyval");

local reminders_errors = {
	missing_fields = {
		type = "modify";
		condition = "bad-request";
		text = "Missing required value for date or text";
	};
	invalid_dateformat = {
		type = "modify";
		condition = "bad-request";
		text = "Invalid date format";
	};
	past_date = {
		type = "modify";
		condition = "gone";
		text = "Reminder date is in the past";
	};
	store_error = {
		type = "cancel";
		condition = "internal-server-error";
		text = "Unable to persist data";
	};
};

local function reminder_error (name)
	return errors.new(name, nil, reminders_errors);
end

local function store_reminder (reminder)
	-- pushes the reminder to the store, and nothing else
	return reminders_store:set(reminder.id, reminder);
end

local function delete_reminder (reminder_id)
	-- empties the store for the given reminder_id
	return reminders_store:set(reminder_id, nil);
end

local function get_reminder (reminder_id)
	return reminders_store:get(reminder_id);
end

local function send_reminder (reminder)
	-- actually delivers the <message /> with the reminder to the user
	local bare = jid.bare(reminder.jid);
	module:log("debug", "Sending reminder %s to %s", reminder.id, bare);
	local message = st.message({ from = "localhost"; to = bare; id = id.short() })
		:tag("reminder", {id = reminder.id; xmlns = xmlns_reminders})
		:add_child(reminder.text)
		:tag("date"):text(datetime.datetime(reminder.date)):up();
	module:send(message);
	return delete_reminder(reminder.id)
end

local function schedule_reminder (reminder)
	-- schedule a module:add_timer for the given reminder
	module:log("debug", "Scheduling reminder to datetime %s", reminder.date);
	local now = os_time();
	local when = reminder.date;
	local delay = when - now;
	module:log("debug", "Reminder text: %s", reminder.text);
	local function callback ()
		send_reminder(reminder)
	end
	module:add_timer(delay, callback);
end

local function process_reminders_store ()
	-- retrieve all reminders in the store and schedule them
	for reminder_id in reminders_store:users() do
		module:log("debug", "Found stored reminder %s", reminder_id);
		local reminder = get_reminder(reminder_id);
		if reminder.date and reminder.text then
			local text = st.deserialize(reminder.text)
			module:log("debug", "Read reminder %s", reminder.id);
			-- cleanup missed reminders
			if reminder.date < os_time() then
				module:log("debug", "Deleting outdated reminder %s", reminder.id)
				delete_reminder(reminder.id)
			end
			schedule_reminder({
					date = reminder.date;
					id = reminder.id;
					jid = reminder.jid;
					text = text;	
			})
		else
			delete_reminder(reminder_id);
		end
	end
end

local function create_reminder (jid, reminder)
	local date = reminder:get_child("date");
	local text = reminder:get_child("text");
	if date == nil or text == nil then
		return nil, reminder_error("missing_fields")
	end
	local now = os_time();
	local _, parsed_date = pcall(datetime.parse, date:get_text());
	if parsed_date == nil then
		return nil, reminder_error("invalid_dateformat")
	end
	if parsed_date < now then
		return nil, reminder_error("past_date"), nil
	end
	local reminder_id = id.medium();
	local rem = st.stanza("reminder", {xmlns = xmlns_reminders; id = reminder_id});
	local data = {
		id = reminder_id;
		jid = jid;
		text = text;
		date = parsed_date;
	}
	local stored = store_reminder(data);
	if not stored then
		return nil, reminder_error("store_error")
	end
	schedule_reminder(data);
	return rem
end

local function handle_set (event)
	local origin, stanza = event.origin, event.stanza
	local reminder = stanza:get_child("reminder", xmlns_reminders);
	if reminder.attr.id ~= nil and reminder:get_child("date") == nil then
		-- delete existing reminder
		local ok = delete_reminder(reminder.attr.id);
		if ok then
			module:log("debug", "reminder %s deleted", reminder.attr.id);
			origin.send(st.reply(stanza):add_child(reminder));
		else
			module:log("debug", "failed to delete reminder %s", reminder.attr.id);
			origin.send(st.error_reply(stanza, "cancel", "internal-server-error"));
		end
		return true;
	else
		-- create new reminder
		local jid = stanza.attr.from
		local created, err = create_reminder(jid, reminder);
		if err ~= nil then
			origin.send(st.error_reply(stanza, err))
			return true;
		else
			origin.send(st.reply(stanza):add_child(created))
			return true;
		end		
	end
	origin.send(st.error_reply(stanza, "modify", "bad-request"));
	return true;
end


-- load saved reminders and set timers
process_reminders_store();

module:hook("iq-set/host/"..xmlns_reminders..":reminder", handle_set)
module:add_feature(xmlns_reminders);
module:log("debug", "Module loaded");