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plugins/mod_announce.lua

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plugins/mod_announce.lua @ 13270:14bbfb2cc8dd default tip

lint: Teach luacheck about module:once Silence warning for using this introduced in 9c62ffbdf2ae
author Kim Alvefur <zash@zash.se>
date Sun, 15 Oct 2023 16:43:14 +0200
parent 12977:74b9e05af71e
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rev   line source
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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 "prosody.util.stanza", require "prosody.util.jid";
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10
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11 local hosts = prosody.hosts;
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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 module:send(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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35
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36 module:default_permission("prosody:admin", ":send-announcement");
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37
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38 -- Old <message>-based jabberd-style announcement sending
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39 function handle_announcement(event)
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40 local stanza = event.stanza;
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41 -- luacheck: ignore 211/node
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42 local node, host, resource = jid.split(stanza.attr.to);
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43
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44 if resource ~= "announce/online" then
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45 return; -- Not an announcement
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46 end
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47
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48 if not module:may(":send-announcement", event) then
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49 -- Not allowed!
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50 module:log("warn", "Non-admin '%s' tried to send server announcement", stanza.attr.from);
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51 return;
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52 end
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53
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54 module:log("info", "Sending server announcement to all online users");
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55 local message = st.clone(stanza);
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56 message.attr.type = "headline";
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57 message.attr.from = host;
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58
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59 local c = send_to_online(message, host);
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60 module:log("info", "Announcement sent to %d online users", c);
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61 return true;
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62 end
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63 module:hook("message/host", handle_announcement);
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64
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65 -- Ad-hoc command (XEP-0133)
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66 local dataforms_new = require "prosody.util.dataforms".new;
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67 local announce_layout = dataforms_new{
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68 title = "Making an Announcement";
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69 instructions = "Fill out this form to make an announcement to all\nactive users of this service.";
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70
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71 { name = "FORM_TYPE", type = "hidden", value = "http://jabber.org/protocol/admin" };
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72 { name = "subject", type = "text-single", label = "Subject" };
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73 { name = "announcement", type = "text-multi", required = true, label = "Announcement" };
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74 };
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75
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76 function announce_handler(_, data, state)
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77 if state then
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78 if data.action == "cancel" then
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79 return { status = "canceled" };
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80 end
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81
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82 local fields = announce_layout:data(data.form);
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83
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84 module:log("info", "Sending server announcement to all online users");
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85 local message = st.message({type = "headline"}, fields.announcement):up()
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86 :tag("subject"):text(fields.subject or "Announcement");
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87
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88 local count = send_to_online(message, data.to);
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89
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90 module:log("info", "Announcement sent to %d online users", count);
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91 return { status = "completed", info = ("Announcement sent to %d online users"):format(count) };
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92 else
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93 return { status = "executing", actions = {"next", "complete", default = "complete"}, form = announce_layout }, "executing";
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94 end
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95 end
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96
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97 module:depends "adhoc";
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98 local adhoc_new = module:require "adhoc".new;
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99 local announce_desc = adhoc_new("Send Announcement to Online Users", "http://jabber.org/protocol/admin#announce", announce_handler, "admin");
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100 module:provides("adhoc", announce_desc);
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101