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)

local st = require "util.stanza";
local jid_split = require "util.jid".split;
local jid_bare = require "util.jid".bare;
local rostermanager = require "core.rostermanager";

local require_encryption = module:get_option_boolean("c2s_require_encryption",
	module:get_option_boolean("require_encryption", false));
local invite_only = module:get_option_boolean("registration_invite_only", true);

local invites;
if prosody.shutdown then -- COMPAT hack to detect prosodyctl
	invites = module:depends("invites");
end

local legacy_invite_stream_feature = st.stanza("register", { xmlns = "urn:xmpp:invite" }):up();
local invite_stream_feature = st.stanza("register", { xmlns = "urn:xmpp:ibr-token:0" }):up();
module:hook("stream-features", function(event)
	local session, features = event.origin, event.features;

	-- Advertise to unauthorized clients only.
	if session.type ~= "c2s_unauthed" or (require_encryption and not session.secure) then
		return
	end

	features:add_child(legacy_invite_stream_feature);
	features:add_child(invite_stream_feature);
end);

-- XEP-0379: Pre-Authenticated Roster Subscription
module:hook("presence/bare", function (event)
	local stanza = event.stanza;
	if stanza.attr.type ~= "subscribe" then return end

	local preauth = stanza:get_child("preauth", "urn:xmpp:pars:0");
	if not preauth then return end
	local token = preauth.attr.token;
	if not token then return end

	local username, host = jid_split(stanza.attr.to);

	local invite, err = invites.get(token, username);

	if not invite then
		module:log("debug", "Got invalid token, error: %s", err);
		return;
	end

	local contact = jid_bare(stanza.attr.from);

	module:log("debug", "Approving inbound subscription to %s from %s", username, contact);
	if rostermanager.set_contact_pending_in(username, host, contact, stanza) then
		if rostermanager.subscribed(username, host, contact) then
			invite:use();
			rostermanager.roster_push(username, host, contact);

			-- Send back a subscription request (goal is mutual subscription)
			if not rostermanager.is_user_subscribed(username, host, contact)
			and not rostermanager.is_contact_pending_out(username, host, contact) then
				module:log("debug", "Sending automatic subscription request to %s from %s", contact, username);
				if rostermanager.set_contact_pending_out(username, host, contact) then
					rostermanager.roster_push(username, host, contact);
					module:send(st.presence({type = "subscribe", from = username.."@"..host, to = contact }));
				else
					module:log("warn", "Failed to set contact pending out for %s", username);
				end
			end
		end
	end
end, 1);

-- Client is submitting a preauth token to allow registration
module:hook("stanza/iq/urn:xmpp:pars:0:preauth", function(event)
	local preauth = event.stanza.tags[1];
	local token = preauth.attr.token;
	local validated_invite = invites.get(token);
	if not validated_invite then
		local reply = st.error_reply(event.stanza, "cancel", "forbidden", "The invite token is invalid or expired");
		event.origin.send(reply);
		return true;
	end
	event.origin.validated_invite = validated_invite;
	local reply = st.reply(event.stanza);
	event.origin.send(reply);
	return true;
end);

-- Registration attempt - ensure a valid preauth token has been supplied
module:hook("user-registering", function (event)
	local validated_invite = event.validated_invite or (event.session and event.session.validated_invite);
	if invite_only and not validated_invite then
		event.allowed = false;
		event.reason = "Registration on this server is through invitation only";
		return;
	elseif not validated_invite then
		-- This registration is not using an invite, but
		-- the server is not in invite-only mode, so nothing
		-- for this module to do...
		return;
	end
	if validated_invite and validated_invite.additional_data and validated_invite.additional_data.allow_reset then
		event.allow_reset = validated_invite.additional_data.allow_reset;
	end
end);

-- Make a *one-way* subscription. User will see when contact is online,
-- contact will not see when user is online.
function subscribe(host, user_username, contact_username)
	local user_jid = user_username.."@"..host;
	local contact_jid = contact_username.."@"..host;
	-- Update user's roster to say subscription request is pending...
	rostermanager.set_contact_pending_out(user_username, host, contact_jid);
	-- Update contact's roster to say subscription request is pending...
	rostermanager.set_contact_pending_in(contact_username, host, user_jid);
	-- Update contact's roster to say subscription request approved...
	rostermanager.subscribed(contact_username, host, user_jid);
	-- Update user's roster to say subscription request approved...
	rostermanager.process_inbound_subscription_approval(user_username, host, contact_jid);
end

-- Make a mutual subscription between jid1 and jid2. Each JID will see
-- when the other one is online.
function subscribe_both(host, user1, user2)
	subscribe(host, user1, user2);
	subscribe(host, user2, user1);
end

-- Registration successful, if there was a preauth token, mark it as used
module:hook("user-registered", function (event)
	local validated_invite = event.validated_invite or (event.session and event.session.validated_invite);
	if not validated_invite then
		return;
	end
	local inviter_username = validated_invite.inviter;
	local contact_username = event.username;
	validated_invite:use();

	if inviter_username then
		module:log("debug", "Creating mutual subscription between %s and %s", inviter_username, contact_username);
		subscribe_both(module.host, inviter_username, contact_username);
		rostermanager.roster_push(inviter_username, module.host, contact_username.."@"..module.host);
	end

	if validated_invite.additional_data then
		module:log("debug", "Importing roles from invite");
		local roles = validated_invite.additional_data.roles;
		if roles then
			module:open_store("roles"):set(contact_username, roles);
		end
	end
end);

-- Equivalent of user-registered but for when the account already existed
-- (i.e. password reset)
module:hook("user-password-reset", function (event)
	local validated_invite = event.validated_invite or (event.session and event.session.validated_invite);
	if not validated_invite then
		return;
	end
	validated_invite:use();
end);