Mercurial > prosody-modules

annotate mod_offline_email/mod_offline_email.lua @ 3656:3e0f4d727825

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mod_vcard_muc: Add an alternative method of signaling avatar change When the avatar has been changed, a signal is sent that the room configuration has changed. Clients then do a disco#info query to find the SHA-1 of the new avatar. They can then fetch it as before, or not if they have it cached already. This is meant to be less disruptive than signaling via presence, which caused problems for some clients. If clients transition to the new method, the old one can eventually be removed. The namespace is made up while waiting for standardization. Otherwise it is very close to what's described in https://xmpp.org/extensions/inbox/muc-avatars.html
author Kim Alvefur <zash@zash.se>
date Sun, 25 Aug 2019 20:46:43 +0200
parents bd71c97de1d0
children ee724c7fa8e0
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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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33 local mesgt = {
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34 headers = {
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35 to = address;
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36 subject = subject or ("Offline message from "..jid_bare(from_address));
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37 };
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38 body = message_text;
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39 };
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41 local ok, err = smtp.send{ from = smtp_address, rcpt = rcpt, source = smtp.message(mesgt),
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42 server = smtp_server, user = smtp_user, password = smtp_pass };
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44 if not ok then
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45 module:log("error", "Failed to deliver to %s: %s", tostring(address), tostring(err));
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46 return;
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47 end
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48 return true;
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49 end
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51 if queue_offline_emails then
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52 local queues = {};
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53 local real_send_message_as_email = send_message_as_email;
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54 function send_message_as_email(address, from_address, message_text)
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55 local pair_key = address.."\0"..from_address;
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56 local queue = queues[pair_key];
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57 if not queue then
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58 queue = { from = smtp_address, to = address, messages = {} };
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59 queues[pair_key] = queue;
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61 module:add_timer(queue_offline_emails+5, function ()
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62 module:log("info", "Checking on %s", from_address);
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63 local current_time = os_time();
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64 local diff = current_time - queue.last_message_time;
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65 if diff > queue_offline_emails then
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66 module:log("info", "Enough silence, sending...");
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67 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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68 else
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69 module:log("info", "Next check in %d", queue_offline_emails - diff + 5);
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70 return queue_offline_emails - diff + 5;
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71 end
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72 end);
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73 end
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75 queue.last_message_time = os_time();
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77 local messages = queue.messages;
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78 messages[#messages+1] = message_text;
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79 return true;
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80 end
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81 end