prosody
573123ff2ab0
plugins/mod_announce.lua

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plugins/mod_announce.lua @ 4989:573123ff2ab0

mod_admin_telnet: Always handle commands terminated by line feeds - ensures consistency even when packets are joined or split on the network
author Matthew Wild <mwild1@gmail.com>
date Mon, 23 Jul 2012 14:03:00 +0100
parent 4926:58714123f600
child 5014:b2006c1cfa85
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1 -- Prosody IM
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2 -- Copyright (C) 2008-2010 Matthew Wild
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3 -- Copyright (C) 2008-2010 Waqas Hussain
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4 --
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5 -- This project is MIT/X11 licensed. Please see the
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6 -- COPYING file in the source package for more information.
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7 --
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8
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9 local st, jid = require "util.stanza", require "util.jid";
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10
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11 local is_admin = require "core.usermanager".is_admin;
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12
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13 function send_to_online(message, host)
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14 local sessions;
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15 if host then
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16 sessions = { [host] = hosts[host] };
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17 else
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18 sessions = hosts;
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19 end
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20
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21 local c = 0;
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22 for hostname, host_session in pairs(sessions) do
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23 if host_session.sessions then
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24 message.attr.from = hostname;
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25 for username in pairs(host_session.sessions) do
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26 c = c + 1;
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27 message.attr.to = username.."@"..hostname;
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28 core_post_stanza(host_session, message);
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29 end
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30 end
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31 end
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32
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33 return c;
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34 end
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36
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37 -- Old <message>-based jabberd-style announcement sending
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38 function handle_announcement(event)
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39 local origin, stanza = event.origin, event.stanza;
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40 local node, host, resource = jid.split(stanza.attr.to);
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41
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42 if resource ~= "announce/online" then
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43 return; -- Not an announcement
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44 end
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45
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46 if not is_admin(stanza.attr.from) then
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47 -- Not an admin? Not allowed!
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48 module:log("warn", "Non-admin '%s' tried to send server announcement", stanza.attr.from);
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49 return;
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50 end
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51
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52 module:log("info", "Sending server announcement to all online users");
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53 local message = st.clone(stanza);
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54 message.attr.type = "headline";
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55 message.attr.from = host;
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56
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57 local c = send_to_online(message, host);
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58 module:log("info", "Announcement sent to %d online users", c);
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59 return true;
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60 end
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61 module:hook("message/host", handle_announcement);
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62
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63 -- Ad-hoc command (XEP-0133)
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64 local dataforms_new = require "util.dataforms".new;
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65 local announce_layout = dataforms_new{
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66 title = "Making an Announcement";
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67 instructions = "Fill out this form to make an announcement to all\nactive users of this service.";
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68
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69 { name = "FORM_TYPE", type = "hidden", value = "http://jabber.org/protocol/admin" };
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70 { name = "subject", type = "text-single", label = "Subject" };
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71 { name = "announcement", type = "text-multi", required = true, label = "Announcement" };
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72 };
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73
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74 function announce_handler(self, data, state)
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75 if state then
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76 if data.action == "cancel" then
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77 return { status = "canceled" };
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78 end
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79
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80 local fields = announce_layout:data(data.form);
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81
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82 module:log("info", "Sending server announcement to all online users");
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83 local message = st.message({type = "headline"}, fields.announcement):up()
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84 :tag("subject"):text(fields.subject or "Announcement");
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85
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86 local count = send_to_online(message, data.to);
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87
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88 module:log("info", "Announcement sent to %d online users", count);
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89 return { status = "completed", info = ("Announcement sent to %d online users"):format(count) };
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90 else
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91 return { status = "executing", form = announce_layout }, "executing";
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92 end
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93
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94 return true;
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95 end
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96
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97 local adhoc_new = module:require "adhoc".new;
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98 local announce_desc = adhoc_new("Send Announcement to Online Users", "http://jabber.org/protocol/admin#announce", announce_handler, "admin");
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99 module:provides("adhoc", announce_desc);
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100