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)

-- SPDX-FileCopyrightText: 2024 John Livingston <https://www.john-livingston.fr/>
-- SPDX-License-Identifier: AGPL-3.0-only
local st = require "util.stanza";
local timer = require "util.timer";
local get_time = require "util.time".now;
local get_moderation_delay = module:require("config").get_moderation_delay;

local muc_util = module:require "muc/util";
local valid_roles = muc_util.valid_roles;

local moderation_delay_tag = "moderation-delay";
local xmlns_fasten = "urn:xmpp:fasten:0";
local xmlns_moderated_0 = "urn:xmpp:message-moderate:0";
local xmlns_retract_0 = "urn:xmpp:message-retract:0";
local xmlns_moderated_1 = "urn:xmpp:message-moderate:1";
local xmlns_retract_1 = "urn:xmpp:message-retract:1";
local xmlns_st_id = "urn:xmpp:sid:0";

local queued_stanza_id_timers = {};

-- tests if a stanza is a retractation message.
local function is_retractation_for_stanza_id(stanza)
  -- XEP 0425 was revised in 2023. For now, mod_muc_moderation uses the previous version.
  -- But we will make the code compatible with both.
  local apply_to = stanza:get_child("apply-to", xmlns_fasten);
  if apply_to and apply_to.attr.id then
    local moderated = apply_to:get_child("moderated", xmlns_moderated_0);
    if moderated then
      local retract = moderated:get_child("retract", xmlns_retract_0);
      if retract then
        return apply_to.attr.id;
      end
    end
  end

  local moderated = stanza:get_child("moderated", xmlns_moderated_1);
  if moderated then
    if moderated:get_child("retract", xmlns_retract_1) then
      return moderated.attr.id;
    end
  end

  return nil;
end

-- handler for muc-broadcast-message
local function handle_broadcast_message(event)
  local room, stanza = event.room, event.stanza;
  local delay = get_moderation_delay(room);
  if delay == nil then
    -- feature disabled on the room, go for it.
    return;
  end

  -- only delay groupchat messages with body.
  if stanza.attr.type ~= "groupchat" then
    return;
  end

  -- detect retractations:
  local retracted_stanza_id = is_retractation_for_stanza_id(stanza);
  if retracted_stanza_id then
    module:log("debug", "Got a retractation message for %s", retracted_stanza_id);
    if queued_stanza_id_timers[retracted_stanza_id] then
      module:log("info", "Got a retractation message, for message %s that is currently waiting for broadcast. Cancelling.", retracted_stanza_id);
      timer.stop(queued_stanza_id_timers[retracted_stanza_id]);
      queued_stanza_id_timers[retracted_stanza_id] = nil;
      -- and we continue...
    end
  end

  if not stanza:get_child("body") then
    -- Dont want to delay message without body.
    -- This is usually messages like "xxx is typing", or any other service message.
    -- This also should concern retractation messages.
    -- Clients that will receive retractation messages for message they never got, should just drop them. And that's ok.
    return;
  end

  local stanza_id = nil; -- message stanza id... can be nil!
  local stanza_id_child = stanza:get_child("stanza-id", xmlns_st_id);
  if not stanza_id_child then
    -- this can happen when muc is not archived!
    -- in such case, message retractation is not possible.
    -- so, this is a normal use case, and we should handle it properly.
  else
    stanza_id = stanza_id_child.attr.id;
  end
  local id = stanza.attr.id;
  if not id then
    -- message should always have an id, but just in case...
    module:log("warn", "Message has no id, wont delay it.");
    return;
  end

  -- Message must be delayed, except for:
  -- * room moderators
  -- * the user that sent the message (if they don't get the echo quickly, their clients could have weird behaviours)
  module:log("debug", "Message %s / %s must be delayed by %i seconds, sending first broadcast wave.", id, stanza_id, delay);
  local moderator_role_value = valid_roles["moderator"];

  local cloned_stanza = st.clone(stanza); -- we must clone, to send a copy for the second wave.

  -- first of all, if the initiator occupant is not moderator, me must send to them.
  -- (delaying the echo message could have some quircks in some xmpp clients)
  if stanza.attr.from then
    local from_occupant = room:get_occupant_by_nick(stanza.attr.from);
    if from_occupant and valid_roles[from_occupant.role or "none"] < moderator_role_value then
      module:log("debug", "Message %s / %s must be sent separatly to it initiator %s.", id, stanza_id, delay, stanza.attr.from);
      room:route_to_occupant(from_occupant, stanza);
    end
  end

  -- adding a tag, so that moderators can know that this message is delayed.
  stanza:tag(moderation_delay_tag, {
    delay = "" .. delay;
    waiting = string.format("%i", math.floor(get_time() + delay));
  }):up();

  -- then, sending to moderators (and only moderators):
  room:broadcast(stanza, function (nick, occupant)
    if valid_roles[occupant.role or "none"] >= moderator_role_value then
      return true;
    end
    return false;
  end);

  local task = timer.add_task(delay, function ()
    module:log("debug", "Message %s has been delayed, sending to remaining participants.", id);
    room:broadcast(cloned_stanza, function (nick, occupant)
      if valid_roles[occupant.role or "none"] >= moderator_role_value then
        return false;
      end
      if nick == stanza.attr.from then
        -- we already sent it to them (because they are moderator, or because we sent them separately)
        return false;
      end
      return true;
    end);
  end);
  if stanza_id then
    -- store it, so we can stop timer if there is a retractation.
    queued_stanza_id_timers[stanza_id] = task;
  end

  return true; -- stop the default broadcast_message processing.
end

return {
  handle_broadcast_message = handle_broadcast_message;
};