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_auth_ldap

local jid_split = require "util.jid".split;
local new_sasl = require "util.sasl".new;
local lualdap = require "lualdap";

local function ldap_filter_escape(s)
	return (s:gsub("[*()\\%z]", function(c) return ("\\%02x"):format(c:byte()) end));
end

-- Config options
local ldap_server = module:get_option_string("ldap_server", "localhost");
local ldap_rootdn = module:get_option_string("ldap_rootdn", "");
local ldap_password = module:get_option_string("ldap_password", "");
local ldap_tls = module:get_option_boolean("ldap_tls");
local ldap_scope = module:get_option_string("ldap_scope", "subtree");
local ldap_filter = module:get_option_string("ldap_filter", "(uid=$user)"):gsub("%%s", "$user", 1);
local ldap_base = assert(module:get_option_string("ldap_base"), "ldap_base is a required option for ldap");
local ldap_mode = module:get_option_string("ldap_mode", "bind");
local ldap_admins = module:get_option_string("ldap_admin_filter",
	module:get_option_string("ldap_admins")); -- COMPAT with mistake in documentation
local host = ldap_filter_escape(module:get_option_string("realm", module.host));

-- Initiate connection
local ld = nil;
module.unload = function() if ld then pcall(ld, ld.close); end end

function ldap_do_once(method, ...)
	if ld == nil then
		local err;
		ld, err = lualdap.open_simple(ldap_server, ldap_rootdn, ldap_password, ldap_tls);
		if not ld then return nil, err, "reconnect"; end
	end

	-- luacheck: ignore 411/success
	local success, iterator, invariant, initial = pcall(ld[method], ld, ...);
	if not success then ld = nil; return nil, iterator, "search"; end

	local success, dn, attr = pcall(iterator, invariant, initial);
	if not success then ld = nil; return success, dn, "iter"; end

	return dn, attr, "return";
end

function ldap_do(method, retry_count, ...)
	local dn, attr, where;
	for _=1,1+retry_count do
		dn, attr, where = ldap_do_once(method, ...);
		if dn or not(attr) then break; end -- nothing or something found
		module:log("warn", "LDAP: %s %s (in %s)", tostring(dn), tostring(attr), where);
		-- otherwise retry
	end
	if not dn and attr then
		module:log("error", "LDAP: %s", tostring(attr));
	end
	return dn, attr;
end

function get_user(username)
	module:log("debug", "get_user(%q)", username);
	return ldap_do("search", 2, {
		base = ldap_base;
		scope = ldap_scope;
		sizelimit = 1;
		filter = ldap_filter:gsub("%$(%a+)", {
			user = ldap_filter_escape(username);
			host = host;
		});
	});
end

local provider = {};

function provider.create_user(username, password) -- luacheck: ignore 212
	return nil, "Account creation not available with LDAP.";
end

function provider.user_exists(username)
	return not not get_user(username);
end

function provider.set_password(username, password)
	local dn, attr = get_user(username);
	if not dn then return nil, attr end
	if attr.userPassword == password then return true end
	return ldap_do("modify", 2, dn, { '=', userPassword = password });
end

if ldap_mode == "getpasswd" then
	function provider.get_password(username)
		local dn, attr = get_user(username);
		if dn and attr then
			return attr.userPassword;
		end
	end

	function provider.test_password(username, password)
		return provider.get_password(username) == password;
	end

	function provider.get_sasl_handler()
		return new_sasl(module.host, {
			plain = function(sasl, username) -- luacheck: ignore 212/sasl
				local password = provider.get_password(username);
				if not password then return "", nil; end
				return password, true;
			end
		});
	end
elseif ldap_mode == "bind" then
	local function test_password(userdn, password)
		local ok, err = lualdap.open_simple(ldap_server, userdn, password, ldap_tls);
		if not ok then
			module:log("debug", "ldap open_simple error: %s", err);
		end
		return not not ok;
	end

	function provider.test_password(username, password)
		local dn = get_user(username);
		if not dn then return end
		return test_password(dn, password)
	end

	function provider.get_sasl_handler()
		return new_sasl(module.host, {
			plain_test = function(sasl, username, password) -- luacheck: ignore 212/sasl
				return provider.test_password(username, password), true;
			end
		});
	end
else
	module:log("error", "Unsupported ldap_mode %s", tostring(ldap_mode));
end

if ldap_admins then
	function provider.is_admin(jid)
		local username, user_host = jid_split(jid);
		if user_host ~= module.host then
			return false;
		end
		return ldap_do("search", 2, {
			base = ldap_base;
			scope = ldap_scope;
			sizelimit = 1;
			filter = ldap_admins:gsub("%$(%a+)", {
				user = ldap_filter_escape(username);
				host = host;
			});
		});
	end
end

module:provides("auth", provider);