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)

-- Publishes Twitter search results over pubsub
--
-- Config:
-- Component "pubsub.example.com" "pubsub"
-- modules_enabled = {
--   "pubsub_twitter";
-- }
-- twitter_searches = { -- node -> query
--   prosody = "prosody xmpp";
-- }
-- twitter_pull_interval = 20 -- minutes
--

local pubsub = module:depends"pubsub";

local json = require "util.json";
local http = require "net.http";
local set = require "util.set";
local it = require "util.iterators";
local array = require "util.array";

local st = require "util.stanza";
--local dump = require"util.serialization".serialize;

local xmlns_atom = "http://www.w3.org/2005/Atom";

local twitter_searches = module:get_option("twitter_searches", {});
local refresh_interval = module:get_option_number("twitter_pull_interval", 20) * 60;
local api_url = module:get_option_string("twitter_search_url", "http://search.twitter.com/search.json");

local month_number = {
	Jan = "01", Feb = "02", Mar = "03";
	Apr = "04", May = "05", Jun = "06";
	Jul = "07", Aug = "08", Sep = "09";
	Oct = "10", Nov = "11", Dec = "12";
};

local active_searches = {};

local function publish_result(search_name, result)
	local node, id = search_name, result.id_str;
	--"Tue, 02 Apr 2013 15:40:54 +0000"
	local timestamp_date, timestamp_month, timestamp_year, timestamp_time =
		result.created_at:match(" (%d+) (%a+) (%d+) (%d%d:%d%d:%d%d)");

	local timestamp = ("%s-%s-%sT%sZ"):format(timestamp_year, month_number[timestamp_month], timestamp_date, timestamp_time);

	local item = st.stanza("item", { xmlns = "http://jabber.org/protocol/pubsub", id = id })
		:tag("entry", { xmlns = xmlns_atom })
			:tag("id"):text(id):up()
			:tag("author")
				:tag("name"):text(result.from_user_name.." (@"..result.from_user..")"):up()
				:tag("uri"):text("http://twitter.com/"..result.from_user):up()
				:up()
			:tag("published"):text(timestamp):up()
			:tag("title"):text(result.text):up()
			:tag("link", { rel = "alternate" , href = "https://twitter.com/"..result.from_user.."/status/"..id}):up();

	module:log("debug", "Publishing Twitter result: %s", tostring(item));

	local ok, err = pubsub.service:publish(node, true, id, item);
	if not ok then
		if err == "item-not-found" then -- try again
			local ok, err = pubsub.service:create(node, true);
			if not ok then
				module:log("error", "could not create node %s: %s", node, err);
				return;
			end
			local ok, err = pubsub.service:publish(node, true, id, item);
			if not ok then
				module:log("error", "could not create or publish node %s: %s", node, err);
				return
			end
		else
			module:log("error", "publishing %s failed: %s", node, err);
		end
	end
end

local function is_retweet(tweet)
	return not not tweet.text:match("^RT ");
end

function update_all()
	module:log("debug", "Updating all searches");
	for name, search in pairs(active_searches) do
		module:log("debug", "Fetching new results for '%s'", name);
		http.request(search.refresh_url or search.url, nil, function (result_json, code)
			if code ~= 200 then
				module:log("warn", "Twitter search query '%s' failed with code %d", name, code);
				return;
			end
			local response = json.decode(result_json);
			module:log("debug", "Processing %d results for %s", #response.results, name);
			search.refresh_url = api_url..response.refresh_url;
			for _, result in ipairs(response.results) do
				if not is_retweet(result) then
					publish_result(name, result);
				end
			end
		end);
	end
	return refresh_interval;
end

function module.load()
	local config_searches = set.new(array.collect(it.keys(twitter_searches)));
	local current_searches = set.new(array.collect(it.keys(active_searches)));

	local disable_searches = current_searches - config_searches;
	local new_searches = config_searches - current_searches;

	for search_name in disable_searches do
		module:log("debug", "Disabled old Twitter search '%s'", search_name);
		active_searches[search_name] = nil;
	end

	for search_name in new_searches do
		module:log("debug", "Created new Twitter search '%s'", search_name);
		local query = twitter_searches[search_name];
		active_searches[search_name] = {
			url = api_url.."?q="..http.urlencode(query);
		};
	end
end

module:add_timer(5, update_all);