Mercurial > prosody-modules

annotate mod_offline_email/mod_offline_email.lua @ 4412:e5493a10c4d1

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mod_cloud_notify: use stanza from mod_smacks to behave O(1) This uses the provided stanza in the ack-delayed smacks event to trigger push for this stanza only rather than iterating through the whole smacks queue to find the first unpushed stanza.
author tmolitor <thilo@eightysoft.de>
date Sat, 30 Jan 2021 07:17:33 +0100
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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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