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)

module:set_global();

local jid_bare = require "util.jid".bare;
local jid_split = require "util.jid".split;

local stat, mkdir = require "lfs".attributes, require "lfs".mkdir;

-- Get a filesystem-safe string
local function fsencode_char(c)
	return ("%%%02x"):format(c:byte());
end
local function fsencode(s)
	return (s:gsub("[^%w._-@]", fsencode_char):gsub("^%.", "_"));
end

local log_base_path = module:get_option("message_logging_dir", prosody.paths.data.."/message_logs");
mkdir(log_base_path);

local function get_host_path(host)
	return log_base_path.."/"..fsencode(host);
end

local function get_user_path(jid)
	local username, host = jid_split(jid);
	local base = get_host_path(host)..os.date("/%Y-%m-%d");
	if not stat(base) then
		mkdir(base);
	end
	return base.."/"..fsencode(username)..".msglog";
end

local open_files_mt = { __index = function (open_files, jid)
	local f, err = io.open(get_user_path(jid), "a+");
	if not f then
		module:log("error", "Failed to open message log for writing [%s]: %s", jid, err);
	end
	rawset(open_files, jid, f);
	return f;
end };

-- [user@host] = filehandle
local open_files = setmetatable({}, open_files_mt);

function close_open_files()
	module:log("debug", "Closing all open files");
	for jid, filehandle in pairs(open_files) do
		filehandle:close();
		open_files[jid] = nil;
	end
end
module:hook_global("logging-reloaded", close_open_files);

local function write_to_log(log_jid, jid, prefix, body)
	if not body then return; end
	local f = open_files[log_jid];
	if not f then return; end
	body = body:gsub("\n", "\n    "); -- Indent newlines
	f:write(os.date("%H:%M:%S "), prefix or "", prefix and ": " or "", jid, ": ", body, "\n");
	f:flush();
end

local function handle_incoming_message(event)
	local origin, stanza = event.origin, event.stanza;
	local message_type = stanza.attr.type;

	if message_type == "error" then return; end

	local from, to = jid_bare(stanza.attr.from), jid_bare(stanza.attr.to or stanza.attr.from);
	if message_type == "groupchat" then
		from = from.." <"..(select(3, jid_split(stanza.attr.from)) or "")..">";
	end
	write_to_log(to, from, "RECV", stanza:get_child_text("body"));
end

local function handle_outgoing_message(event)
	local origin, stanza = event.origin, event.stanza;
	local message_type = stanza.attr.type;

	if message_type == "error" then return; end

	local from, to = jid_bare(stanza.attr.from), jid_bare(stanza.attr.to or origin.full_jid);
	write_to_log(from, to, "SEND", stanza:get_child_text("body"));
end

local function handle_muc_message(event)
	local stanza = event.stanza;
	if stanza.attr.type ~= "groupchat" then return; end
	local room = event.room or hosts[select(2, jid_split(stanza.attr.to))].modules.muc.rooms[stanza.attr.to];
	if not room then return; end
	local nick = select(3, jid_split(room._jid_nick[stanza.attr.from]));
	if not nick then return; end
	write_to_log(room.jid, jid_bare(stanza.attr.from).." <"..nick..">", "MESG", stanza:get_child_text("body"));
end

function module.add_host(module)
	local host_base_path = get_host_path(module.host);
	if not stat(host_base_path) then
		mkdir(host_base_path);
	end

	if hosts[module.host].modules.muc then
		module:hook("message/bare", handle_muc_message, 1);
	else
		module:hook("message/bare", handle_incoming_message, 1);
		module:hook("message/full", handle_incoming_message, 1);
	
		module:hook("pre-message/bare", handle_outgoing_message, 1);
		module:hook("pre-message/full", handle_outgoing_message, 1);
		module:hook("pre-message/host", handle_outgoing_message, 1);
	end

end

function module.command(arg)
	local command = table.remove(arg, 1);
	if command == "path" then
		print(get_user_path(arg[1]));
	else
		io.stderr:write("Unrecognised command: ", command);
		return 1;
	end
	return 0;
end

function module.save()
	return { open_files = open_files };
end

function module.restore(saved)
	open_files = setmetatable(saved.open_files or {}, open_files_mt);
end