Mercurial > prosody-modules

annotate mod_muc_restrict_media/mod_muc_restrict_media.lua @ 5405:c7a5caad28ef

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mod_http_oauth2: Enforce response type encoded in client_id The client promises to only use this response type, so we should hold them to that. This makes it fail earlier if the response type is disabled or the client is trying to use one that it promised not to use. Better than failing after login and consent.
author Kim Alvefur <zash@zash.se>
date Tue, 02 May 2023 16:31:25 +0200
parents 1682166171ff
children
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1 module:depends"muc";
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2
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3 local restrict_by_default = module:get_option_boolean("muc_room_default_restrict_media", true);
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4
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5 local function should_restrict_media(room)
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6 local restrict_media = room._data.restrict_media;
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7 if restrict_media == nil then
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8 restrict_media = restrict_by_default;
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9 end
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10 return restrict_media;
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11 end
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12
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13 module:hook("muc-config-form", function(event)
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14 local room, form = event.room, event.form;
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15 table.insert(form, {
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16 name = "{xmpp:prosody.im}muc#roomconfig_unaffiliated_media",
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17 type = "boolean",
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18 label = "Display inline media (images, etc.) from non-members",
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19 value = not should_restrict_media(room),
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20 });
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21 end);
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22
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23 module:hook("muc-config-submitted", function(event)
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24 local room, fields, changed = event.room, event.fields, event.changed;
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25 local new_restrict_media = not fields["{xmpp:prosody.im}muc#roomconfig_unaffiliated_media"];
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26 if new_restrict_media ~= should_restrict_media(room) then
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27 if new_restrict_media == restrict_by_default then
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28 room._data.restrict_media = nil;
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29 else
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30 room._data.restrict_media = new_restrict_media;
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31 end
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32 if type(changed) == "table" then
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33 changed["{xmpp:prosody.im}muc#roomconfig_unaffiliated_media"] = true;
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34 else
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35 event.changed = true;
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36 end
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37 end
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38 end);
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39
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40 module:hook("muc-disco#info", function (event)
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41 local room, form, formdata = event.room, event.form, event.formdata;
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42
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43 local allow_unaffiliated_media = not should_restrict_media(room);
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44 table.insert(form, {
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45 name = "{xmpp:prosody.im}muc#roomconfig_unaffiliated_media",
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46 type = "boolean",
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47 });
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48 formdata["{xmpp:prosody.im}muc#roomconfig_unaffiliated_media"] = allow_unaffiliated_media;
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49 end);
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50
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51 local function strip_xhtml_img(tag)
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52 if tag.attr.xmlns == "http://www.w3.org/1999/xhtml" and tag.name == "img" then
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53 tag.name = "i";
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54 tag:text(tag.attr.alt or "<image blocked>");
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55 tag.attr = { xmlns = tag.attr.xmlns, title = tag.attr.title };
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56 tag:maptags(strip_xhtml_img);
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57 else
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58 tag:maptags(strip_xhtml_img);
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59 end
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60
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61 return tag;
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62 end
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63
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64 local function filter_media_tags(tag)
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65 local xmlns = tag.attr.xmlns;
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66 if xmlns == "jabber:x:oob" then
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67 return nil;
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68 elseif xmlns == "urn:xmpp:reference:0" then
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69 if tag:get_child("media-sharing", "urn:xmpp:sims:1") then
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70 return nil;
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71 end
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72 elseif xmlns == "http://jabber.org/protocol/xhtml-im" then
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73 return strip_xhtml_img(tag);
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74 end
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75 return tag;
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76 end
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77
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78 module:hook("muc-occupant-groupchat", function (event)
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79 local stanza = event.stanza;
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80 if stanza.attr.type ~= "groupchat" then return; end
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81 if event.room:get_affiliation(stanza.attr.from) then return end
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82 if should_restrict_media(event.room) then
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83 stanza:maptags(filter_media_tags);
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84 end
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85 end, 20);