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mod_muc_moderation/mod_muc_moderation.lua @ 5210:898575a0c6f3
mod_http_oauth2: Switch to '303 See Other' redirects
This is the recommendation by draft-ietf-oauth-v2-1-07 section 7.5.2. It is
the only redirect code that guarantees the user agent will use a GET request,
rather than re-submitting a POST request to the new URL.
The latter would be bad for us, as we are encoding auth tokens in the form
data.
author | Matthew Wild <mwild1@gmail.com> |
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date | Mon, 06 Mar 2023 10:37:43 +0000 |
parent | 5170:4d6af8950016 |
child | 5618:06fad22672e1 |
rev | line source |
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1 -- mod_muc_moderation |
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2 -- |
4754 | 3 -- Copyright (C) 2015-2021 Kim Alvefur |
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4 -- |
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5 -- This file is MIT licensed. |
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6 -- |
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7 -- Implements: XEP-0425: Message Moderation |
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8 -- |
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9 -- Imports |
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10 local dt = require "util.datetime"; |
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11 local id = require "util.id"; |
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12 local jid = require "util.jid"; |
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13 local st = require "util.stanza"; |
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14 |
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15 -- Plugin dependencies |
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16 local mod_muc = module:depends "muc"; |
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17 |
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18 local muc_util = module:require "muc/util"; |
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19 local valid_roles = muc_util.valid_roles; |
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20 |
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21 local muc_log_archive = module:open_store("muc_log", "archive"); |
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22 |
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23 if not muc_log_archive.set then |
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24 module:log("warn", "Selected archive storage module does not support message replacement, no tombstones will be saved"); |
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25 end |
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26 |
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27 -- Namespaces |
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28 local xmlns_fasten = "urn:xmpp:fasten:0"; |
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29 local xmlns_moderate = "urn:xmpp:message-moderate:0"; |
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30 local xmlns_retract = "urn:xmpp:message-retract:0"; |
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31 |
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32 -- Discovering support |
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33 module:hook("muc-disco#info", function (event) |
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34 event.reply:tag("feature", { var = xmlns_moderate }):up(); |
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35 end); |
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36 |
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37 -- TODO error registry, requires Prosody 0.12+ |
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38 |
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39 -- moderate : function (string, string, string, boolean, string) : boolean, enum, enum, string |
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40 local function moderate(actor, room_jid, stanza_id, retract, reason) |
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41 local room_node = jid.split(room_jid); |
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42 local room = mod_muc.get_room_from_jid(room_jid); |
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43 |
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44 -- Permissions is based on role, which is a property of a current occupant, |
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45 -- so check if the actor is an occupant, otherwise if they have a reserved |
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46 -- nickname that can be used to retrieve the role. |
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47 local actor_nick = room:get_occupant_jid(actor); |
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48 if not actor_nick then |
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49 local reserved_nickname = room:get_affiliation_data(jid.bare(actor), "reserved_nickname"); |
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50 if reserved_nickname then |
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51 actor_nick = room.jid .. "/" .. reserved_nickname; |
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52 end |
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53 end |
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54 |
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55 -- Retrieve their current role, iff they are in the room, otherwise what they |
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56 -- would have based on affiliation. |
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57 local affiliation = room:get_affiliation(actor); |
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58 local role = room:get_role(actor_nick) or room:get_default_role(affiliation); |
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59 if valid_roles[role or "none"] < valid_roles.moderator then |
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60 return false, "auth", "forbidden", "You need a role of at least 'moderator'"; |
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61 end |
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62 |
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63 -- Original stanza to base tombstone on |
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64 local original, err; |
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65 if muc_log_archive.get then |
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66 original, err = muc_log_archive:get(room_node, stanza_id); |
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67 else |
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68 -- COMPAT missing :get API |
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69 err = "item-not-found"; |
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70 for i, item in muc_log_archive:find(room_node, { key = stanza_id, limit = 1 }) do |
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71 if i == stanza_id then |
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72 original, err = item, nil; |
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73 end |
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74 end |
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75 end |
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76 |
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77 if not original then |
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78 if err == "item-not-found" then |
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79 return false, "modify", "item-not-found"; |
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80 else |
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81 return false, "wait", "internal-server-error"; |
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82 end |
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83 end |
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84 |
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85 |
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86 local announcement = st.message({ from = room_jid, type = "groupchat", id = id.medium(), }) |
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87 :tag("apply-to", { xmlns = xmlns_fasten, id = stanza_id }) |
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88 :tag("moderated", { xmlns = xmlns_moderate, by = actor_nick }) |
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89 |
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90 if retract then |
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91 announcement:tag("retract", { xmlns = xmlns_retract }):up(); |
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92 end |
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93 |
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94 if reason then |
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95 announcement:text_tag("reason", reason); |
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96 end |
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97 |
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98 if muc_log_archive.set and retract then |
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99 local tombstone = st.message({ from = original.attr.from, type = "groupchat", id = original.attr.id }) |
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100 :tag("moderated", { xmlns = xmlns_moderate, by = actor_nick }) |
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101 :tag("retracted", { xmlns = xmlns_retract, stamp = dt.datetime() }):up(); |
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102 |
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103 if reason then |
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104 tombstone:text_tag("reason", reason); |
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105 end |
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106 tombstone:reset(); |
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107 |
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108 local was_replaced = muc_log_archive:set(room_node, stanza_id, tombstone); |
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109 if not was_replaced then |
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110 return false, "wait", "internal-server-error"; |
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111 end |
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112 end |
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113 |
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114 -- Done, tell people about it |
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115 module:log("info", "Message with id '%s' in room %s moderated by %s, reason: %s", stanza_id, room_jid, actor, reason); |
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116 room:broadcast_message(announcement); |
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117 |
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118 return true; |
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119 end |
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120 |
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121 -- Main handling |
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122 module:hook("iq-set/bare/" .. xmlns_fasten .. ":apply-to", function (event) |
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123 local stanza, origin = event.stanza, event.origin; |
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124 |
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125 local actor = stanza.attr.from; |
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126 local room_jid = stanza.attr.to; |
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127 |
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128 -- Collect info we need |
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129 local apply_to = stanza.tags[1]; |
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130 local moderate_tag = apply_to:get_child("moderate", xmlns_moderate); |
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131 if not moderate_tag then return end -- some other kind of fastening? |
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132 |
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133 local reason = moderate_tag:get_child_text("reason"); |
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134 local retract = moderate_tag:get_child("retract", xmlns_retract); |
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135 |
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136 local stanza_id = apply_to.attr.id; |
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137 |
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138 local ok, error_type, error_condition, error_text = moderate(actor, room_jid, stanza_id, retract, reason); |
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139 if not ok then |
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140 origin.send(st.error_reply(stanza, error_type, error_condition, error_text)); |
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141 return true; |
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142 end |
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143 |
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144 origin.send(st.reply(stanza)); |
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145 return true; |
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146 end); |
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147 |
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148 module:hook("muc-message-is-historic", function (event) |
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149 -- Ensure moderation messages are stored |
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150 if event.stanza.attr.from == event.room.jid then |
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151 return event.stanza:get_child("apply-to", xmlns_fasten); |
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152 end |
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153 end, 1); |