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)

-- Prosody IM
-- Copyright (C) 2009-2012 Tobias Markmann
--
-- This project is MIT/X11 licensed. Please see the
-- COPYING file in the source package for more information.
--

local st = require "util.stanza";
local zlib = require "zlib";
local pcall = pcall;
local tostring = tostring;

local xmlns_compression_feature = "http://jabber.org/features/compress"
local xmlns_compression_protocol = "http://jabber.org/protocol/compress"
local xmlns_stream = "http://etherx.jabber.org/streams";
local compression_stream_feature = st.stanza("compression", {xmlns=xmlns_compression_feature}):tag("method"):text("zlib"):up();
local add_filter = require "util.filters".add_filter;

local compression_level = module:get_option_number("compression_level", 7);

if not compression_level or compression_level < 1 or compression_level > 9 then
	module:log("warn", "Invalid compression level in config: %s", tostring(compression_level));
	module:log("warn", "Module loading aborted. Compression won't be available.");
	return;
end

module:hook("stream-features", function(event)
	local origin, features = event.origin, event.features;
	if not origin.compressed and (origin.type == "c2s" or origin.type == "c2s_unbound") then
		features:add_child(compression_stream_feature);
	end
end);

module:hook("s2s-stream-features", function(event)
	local origin, features = event.origin, event.features;
	if not origin.compressed and origin.type == "s2sin" then
		features:add_child(compression_stream_feature);
	end
end);

-- Hook to activate compression if remote server supports it.
module:hook_stanza(xmlns_stream, "features",
		function (session, stanza)
			if not session.compressed and session.type == "s2sout" then
				-- does remote server support compression?
				local comp_st = stanza:get_child("compression", xmlns_compression_feature);
				if comp_st then
					-- do we support the mechanism
					for a in comp_st:childtags("method") do
						local algorithm = a:get_text();
						if algorithm == "zlib" then
							session.sends2s(st.stanza("compress", {xmlns=xmlns_compression_protocol}):tag("method"):text("zlib"))
							session.log("debug", "Enabled compression using zlib.")
							return true;
						end
					end
					session.log("debug", "Remote server supports no compression algorithm we support.")
				end
			end
		end
, 250);


-- returns either nil or a fully functional ready to use inflate stream
local function get_deflate_stream(session)
	local status, deflate_stream = pcall(zlib.deflate, compression_level);
	if status == false then
		local error_st = st.stanza("failure", {xmlns=xmlns_compression_protocol}):tag("setup-failed");
		(session.sends2s or session.send)(error_st);
		session.log("error", "Failed to create zlib.deflate filter.");
		module:log("error", "%s", tostring(deflate_stream));
		return
	end
	return deflate_stream
end

-- returns either nil or a fully functional ready to use inflate stream
local function get_inflate_stream(session)
	local status, inflate_stream = pcall(zlib.inflate);
	if status == false then
		local error_st = st.stanza("failure", {xmlns=xmlns_compression_protocol}):tag("setup-failed");
		(session.sends2s or session.send)(error_st);
		session.log("error", "Failed to create zlib.inflate filter.");
		module:log("error", "%s", tostring(inflate_stream));
		return
	end
	return inflate_stream
end

-- setup compression for a stream
local function setup_compression(session, deflate_stream)
	add_filter(session, "bytes/out", function(t)
		local status, compressed, eof = pcall(deflate_stream, tostring(t), 'sync');
		if status == false then
			module:log("warn", "%s", tostring(compressed));
			session:close({
				condition = "undefined-condition";
				text = compressed;
				extra = st.stanza("failure", {xmlns="http://jabber.org/protocol/compress"}):tag("processing-failed");
			});
			return;
		end
		return compressed;
	end);
end

-- setup decompression for a stream
local function setup_decompression(session, inflate_stream)
	add_filter(session, "bytes/in", function(data)
		local status, decompressed, eof = pcall(inflate_stream, data);
		if status == false then
			module:log("warn", "%s", tostring(decompressed));
			session:close({
				condition = "undefined-condition";
				text = decompressed;
				extra = st.stanza("failure", {xmlns="http://jabber.org/protocol/compress"}):tag("processing-failed");
			});
			return;
		end
		return decompressed;
	end);
end

module:hook("stanza/http://jabber.org/protocol/compress:compressed", function(event)
	local session = event.origin;
	
	if session.type == "s2sout" then
		session.log("debug", "Activating compression...")
		-- create deflate and inflate streams
		local deflate_stream = get_deflate_stream(session);
		if not deflate_stream then return true; end
		
		local inflate_stream = get_inflate_stream(session);
		if not inflate_stream then return true; end
		
		-- setup compression for session.w
		setup_compression(session, deflate_stream);
			
		-- setup decompression for session.data
		setup_decompression(session, inflate_stream);
		session:reset_stream();
		session:open_stream(session.from_host, session.to_host);
		session.compressed = true;
		return true;
	end
end);

module:hook("stanza/http://jabber.org/protocol/compress:failure", function(event)
	local err = event.stanza:get_child();
	(event.origin.log or module._log)("warn", "Compression setup failed (%s)", err and err.name or "unknown reason");
	return true;
end);

module:hook("stanza/http://jabber.org/protocol/compress:compress", function(event)
	local session, stanza = event.origin, event.stanza;

	if session.type == "c2s" or session.type == "s2sin" then
		-- fail if we are already compressed
		if session.compressed then
			local error_st = st.stanza("failure", {xmlns=xmlns_compression_protocol}):tag("setup-failed");
			(session.sends2s or session.send)(error_st);
			session.log("debug", "Client tried to establish another compression layer.");
			return true;
		end
		
		-- checking if the compression method is supported
		local method = stanza:get_child_text("method");
		if method == "zlib" then
			session.log("debug", "zlib compression enabled.");
			
			-- create deflate and inflate streams
			local deflate_stream = get_deflate_stream(session);
			if not deflate_stream then return true; end
			
			local inflate_stream = get_inflate_stream(session);
			if not inflate_stream then return true; end
			
			(session.sends2s or session.send)(st.stanza("compressed", {xmlns=xmlns_compression_protocol}));
			session:reset_stream();
			
			-- setup compression for session.w
			setup_compression(session, deflate_stream);
				
			-- setup decompression for session.data
			setup_decompression(session, inflate_stream);
			
			session.compressed = true;
		elseif method then
			session.log("debug", "%s compression selected, but we don't support it.", tostring(method));
			local error_st = st.stanza("failure", {xmlns=xmlns_compression_protocol}):tag("unsupported-method");
			(session.sends2s or session.send)(error_st);
		else
			(session.sends2s or session.send)(st.stanza("failure", {xmlns=xmlns_compression_protocol}):tag("setup-failed"));
		end
		return true;
	end
end);