Mercurial > prosody-modules

annotate mod_offline_email/mod_offline_email.lua @ 5401:c8d04ac200fc

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mod_http_oauth2: Reject loopback URIs as client_uri This really should be a proper website with info, https://localhost is not good enough. Ideally we'd validate that it's got proper DNS and is actually reachable, but triggering HTTP or even DNS lookups seems like it would carry abuse potential that would best to avoid.
author Kim Alvefur <zash@zash.se>
date Tue, 02 May 2023 16:20:55 +0200
parents ee724c7fa8e0
children
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2 local jid_bare = require "util.jid".bare;
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3 local os_time = os.time;
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4 local t_concat = table.concat;
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6 prosody.unlock_globals(); -- LuaSocket wants to pollute the global scope
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7 local smtp = require "socket.smtp";
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8 prosody.lock_globals();
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10 local smtp_server = module:get_option_string("smtp_server", "localhost");
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11 local smtp_user = module:get_option_string("smtp_username");
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12 local smtp_pass = module:get_option_string("smtp_password");
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14 local smtp_address = module:get_option("smtp_from") or ((smtp_user or "xmpp").."@"..(smtp_server or module.host));
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16 local queue_offline_emails = module:get_option("queue_offline_emails");
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17 if queue_offline_emails == true then queue_offline_emails = 300; end
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19 local send_message_as_email;
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21 module:hook("message/offline/handle", function(event)
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22 local stanza = event.stanza;
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23 local text = stanza:get_child_text("body");
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24 if text then
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25 return send_message_as_email(jid_bare(stanza.attr.to), jid_bare(stanza.attr.from), text);
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26 end
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27 end, 1);
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29 function send_message_as_email(address, from_address, message_text, subject)
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30 module:log("info", "Forwarding offline message to %s via email", address);
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31 local rcpt = "<"..address..">";
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32
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33 local mesgt = {
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34 headers = {
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35 ["content-type"] = 'text/plain; charset=utf-8';
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36 to = address;
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37 subject = subject or ("Offline message from "..jid_bare(from_address));
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38 };
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39 body = message_text;
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40 };
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42 local ok, err = smtp.send{ from = smtp_address, rcpt = rcpt, source = smtp.message(mesgt),
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43 server = smtp_server, user = smtp_user, password = smtp_pass };
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45 if not ok then
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46 module:log("error", "Failed to deliver to %s: %s", tostring(address), tostring(err));
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47 return;
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48 end
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49 return true;
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50 end
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52 if queue_offline_emails then
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53 local queues = {};
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54 local real_send_message_as_email = send_message_as_email;
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55 function send_message_as_email(address, from_address, message_text)
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56 local pair_key = address.."\0"..from_address;
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57 local queue = queues[pair_key];
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58 if not queue then
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59 queue = { from = smtp_address, to = address, messages = {} };
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60 queues[pair_key] = queue;
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62 module:add_timer(queue_offline_emails+5, function ()
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63 module:log("info", "Checking on %s", from_address);
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64 local current_time = os_time();
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65 local diff = current_time - queue.last_message_time;
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66 if diff > queue_offline_emails then
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67 module:log("info", "Enough silence, sending...");
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68 real_send_message_as_email(address, from_address, t_concat(queue.messages, "\n"), "You have "..#queue.messages.." offline message"..(#queue.messages == 1 and "" or "s").." from "..from_address)
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69 else
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70 module:log("info", "Next check in %d", queue_offline_emails - diff + 5);
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71 return queue_offline_emails - diff + 5;
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72 end
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73 end);
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74 end
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76 queue.last_message_time = os_time();
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78 local messages = queue.messages;
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79 messages[#messages+1] = message_text;
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80 return true;
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81 end
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82 end