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annotate mod_offline_email/mod_offline_email.lua @ 911:46e807dff445

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mod_incidents_handling: still needs some work to be actually functional, backing it out until it's ready.
author Marco Cirillo <maranda@lightwitch.org>
date Sun, 17 Feb 2013 07:30:57 +0100
parents 010452cfaf53
children f1a0a0754b87
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1
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2 local full_sessions = full_sessions;
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3 local bare_sessions = bare_sessions;
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4
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5 local st = require "util.stanza";
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6 local jid_bare = require "util.jid".bare;
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7 local jid_split = require "util.jid".split;
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8 local user_exists = require "core.usermanager".user_exists;
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9 local urlencode = require "net.http".urlencode;
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10 local add_task = require "util.timer".add_task;
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11 local os_time = os.time;
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12 local t_concat = table.concat;
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13 local smtp = require "socket.smtp";
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15 local smtp_server = module:get_option("smtp_server");
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16 local smtp_user = module:get_option("smtp_username");
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17 local smtp_pass = module:get_option("smtp_password");
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19 local smtp_address = module:get_option("smtp_from") or ((smtp_user or "xmpp").."@"..(smtp_server or module.host));
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21 local queue_offline_emails = module:get_option("queue_offline_emails");
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22 if queue_offline_emails == true then queue_offline_emails = 300; end
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23
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24 local send_message_as_email;
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25 local message_body_from_stanza;
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27 function process_to_bare(bare, origin, stanza)
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28 local user = bare_sessions[bare];
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29
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30 local t = stanza.attr.type;
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31 if t == nil or t == "chat" or t == "normal" then -- chat or normal message
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32 if not (user and user.top_resources) then -- No resources online?
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33 if user_exists(jid_split(bare)) then
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34 local text = message_body_from_stanza(stanza);
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35 if text then
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36 send_message_as_email(bare, jid_bare(stanza.attr.from), text);
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37 else
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38 module:log("error", "Unable to extract message body from offline message to put into an email");
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39 end
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40 end
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41 end
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42 end
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43 return; -- Leave for further processing
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44 end
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47 module:hook("message/full", function(data)
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48 -- message to full JID recieved
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49 local origin, stanza = data.origin, data.stanza;
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50
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51 local session = full_sessions[stanza.attr.to];
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52 if not session then -- resource not online
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53 return process_to_bare(jid_bare(stanza.attr.to), origin, stanza);
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54 end
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55 end, 20);
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56
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57 module:hook("message/bare", function(data)
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58 -- message to bare JID recieved
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59 local origin, stanza = data.origin, data.stanza;
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61 return process_to_bare(stanza.attr.to or (origin.username..'@'..origin.host), origin, stanza);
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62 end, 20);
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63
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64 function send_message_as_email(address, from_address, message_text, subject)
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65 module:log("info", "Forwarding offline message to %s via email", address);
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66 local rcpt = "<"..address..">";
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67 local from_user, from_domain = jid_split(from_address);
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68 local from = "<"..urlencode(from_user).."@"..from_domain..">";
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69
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70 local mesgt = {
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71 headers = {
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72 to = address;
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73 subject = subject or ("Offline message from "..jid_bare(from_address));
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74 };
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75 body = message_text;
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76 };
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77
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78 local ok, err = smtp.send{ from = from, rcpt = rcpt, source = smtp.message(mesgt),
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79 server = smtp_server, user = smtp_user, password = smtp_pass };
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80 if not ok then
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81 module:log("error", "Failed to deliver to %s: %s", tostring(address), tostring(err));
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82 return false;
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83 end
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84 return true;
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85 end
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86
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87 if queue_offline_emails then
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88 local queues = {};
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89 local real_send_message_as_email = send_message_as_email;
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90 function send_message_as_email(address, from_address, message_text)
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91 local pair_key = address.."\0"..from_address;
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92 local queue = queues[pair_key];
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93 if not queue then
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94 queue = { from = from_address, to = address, messages = {} };
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95 queues[pair_key] = queue;
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96
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97 add_task(queue_offline_emails+5, function ()
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98 module:log("info", "Checking on %s", from_address);
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99 local current_time = os_time();
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100 local diff = current_time - queue.last_message_time;
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101 if diff > queue_offline_emails then
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102 module:log("info", "Enough silence, sending...");
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103 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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104 else
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105 module:log("info", "Next check in %d", queue_offline_emails - diff + 5);
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106 return queue_offline_emails - diff + 5;
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107 end
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108 end);
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109 end
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110
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111 queue.last_message_time = os_time();
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112
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113 local messages = queue.messages;
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114 messages[#messages+1] = message_text;
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115 end
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116 end
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117
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118 function message_body_from_stanza(stanza)
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119 local message_text = stanza:child_with_name("body");
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120 if message_text then
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121 return message_text:get_text();
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122 end
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123 end