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mod_offline_email/mod_offline_email.lua @ 5115:4a5837591380
mod_audit: remove event hook
Let's keep it simple for now---also we expose the audit
functionality on the moduleapi level anyway.
author | Jonas Schäfer <jonas@wielicki.name> |
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date | Thu, 28 Apr 2022 20:22:03 +0200 |
parent | 4231:ee724c7fa8e0 |
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1 |
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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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5 |
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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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9 |
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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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13 |
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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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15 |
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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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18 |
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19 local send_message_as_email; |
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20 |
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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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28 |
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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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41 |
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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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44 |
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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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51 |
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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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61 |
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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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75 |
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76 queue.last_message_time = os_time(); |
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77 |
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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 |