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annotate mod_restrict_xmpp/mod_restrict_xmpp.lua @ 5243:d5dc8edb2695

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mod_http_oauth2: Use more compact IDs UUIDs are nice but so verbose! The reduction in entropy for the nonce should be fine since the timestamp is also counts towards this, and it changes every second (modulo clock shenanigans), so the chances of someone managing to get the same client_secret by registering with the same information at the same time as another entity should be negligible.
author Kim Alvefur <zash@zash.se>
date Sat, 11 Mar 2023 22:46:27 +0100
parents a1f49586d28a
children 825c6fb76c48
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1 local array = require "util.array";
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2 local it = require "util.iterators";
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3 local set = require "util.set";
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4 local st = require "util.stanza";
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5
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6 module:default_permission("prosody:user", "xmpp:federate");
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7 module:hook("route/remote", function (event)
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8 if not module:may("xmpp:federate", event) then
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9 if event.stanza.attr.type ~= "result" and event.stanza.attr.type ~= "error" then
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10 module:log("warn", "Access denied: xmpp:federate for %s -> %s", event.stanza.attr.from, event.stanza.attr.to);
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11 local reply = st.error_reply(event.stanza, "auth", "forbidden");
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12 event.origin.send(reply);
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13 end
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14 return true;
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15 end
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16 end);
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17
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18 local iq_namespaces = {
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19 ["jabber:iq:roster"] = "contacts";
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20 ["jabber:iq:private"] = "storage";
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21
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22 ["vcard-temp"] = "profile";
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23 ["urn:xmpp:mam:0"] = "history";
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24 ["urn:xmpp:mam:1"] = "history";
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25 ["urn:xmpp:mam:2"] = "history";
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26
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27 ["urn:xmpp:carbons:0"] = "carbons";
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28 ["urn:xmpp:carbons:1"] = "carbons";
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29 ["urn:xmpp:carbons:2"] = "carbons";
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30
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31 ["urn:xmpp:blocking"] = "blocklist";
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32
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33 ["http://jabber.org/protocol/pubsub"] = "pep";
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34 ["http://jabber.org/protocol/disco#info"] = "disco";
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35 };
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36
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37 local legacy_storage_nodes = {
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38 ["storage:bookmarks"] = "bookmarks";
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39 ["storage:rosternotes"] = "contacts";
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40 ["roster:delimiter"] = "contacts";
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41 ["storage:metacontacts"] = "contacts";
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42 };
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43
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44 local pep_nodes = {
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45 ["storage:bookmarks"] = "bookmarks";
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46 ["urn:xmpp:bookmarks:1"] = "bookmarks";
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47
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48 ["urn:xmpp:avatar:data"] = "profile";
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49 ["urn:xmpp:avatar:metadata"] = "profile";
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50 ["http://jabber.org/protocol/nick"] = "profile";
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51
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52 ["eu.siacs.conversations.axolotl.devicelist"] = "omemo";
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53 ["urn:xmpp:omemo:1:devices"] = "omemo";
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54 ["urn:xmpp:omemo:1:bundles"] = "omemo";
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55 ["urn:xmpp:omemo:2:devices"] = "omemo";
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56 ["urn:xmpp:omemo:2:bundles"] = "omemo";
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57 };
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58
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59 module:hook("pre-iq/bare", function (event)
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60 if not event.to_self then return; end
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61 local origin, stanza = event.origin, event.stanza;
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62
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63 local typ = stanza.attr.type;
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64 if typ ~= "set" and typ ~= "get" then return; end
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65 local action = typ == "get" and "read" or "write";
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66
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67 local payload = stanza.tags[1];
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68 local ns = payload and payload.attr.xmlns;
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69 local proto = iq_namespaces[ns];
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70 if proto == "pep" then
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71 local pubsub = payload:get_child("pubsub", "http://jabber.org/protocol/pubsub");
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72 local node = pubsub and #pubsub.tags == 1 and pubsub.tags[1].attr.node or nil;
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73 proto = pep_nodes[node] or "pep";
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74 if proto == "pep" and node and node:match("^eu%.siacs%.conversations%.axolotl%.bundles%.%d+$") then
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75 proto = "omemo"; -- COMPAT w/ original OMEMO
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76 end
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77 elseif proto == "storage" then
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78 local data = payload.tags[1];
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79 proto = data and legacy_storage_nodes[data.attr.xmlns] or "legacy-storage";
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80 elseif proto == "carbons" then
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81 -- This allows access to live messages
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82 proto, action = "messages", "read";
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83 elseif proto == "history" then
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84 action = "read";
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85 end
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86 local permission_name = "xmpp:account:"..(proto and (proto..":") or "")..action;
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87 if not module:may(permission_name, event) then
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88 module:log("warn", "Access denied: %s ({%s}%s) for %s", permission_name, ns, payload.name, origin.full_jid or origin.id);
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89 origin.send(st.error_reply(stanza, "auth", "forbidden", "You do not have permission to make this request ("..permission_name..")"));
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90 return true;
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91 end
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92 end);
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93
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94 --module:default_permission("prosody:restricted", "xmpp:account:read");
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95 --module:default_permission("prosody:restricted", "xmpp:account:write");
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96 module:default_permission("prosody:restricted", "xmpp:account:messages:read");
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97 module:default_permission("prosody:restricted", "xmpp:account:messages:write");
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98 for _, property_list in ipairs({ iq_namespaces, legacy_storage_nodes, pep_nodes }) do
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99 for account_property in set.new(array.collect(it.values(property_list))) do
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100 module:default_permission("prosody:restricted", "xmpp:account:"..account_property..":read");
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101 module:default_permission("prosody:restricted", "xmpp:account:"..account_property..":write");
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102 end
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103 end
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104
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105 module:default_permission("prosody:restricted", "xmpp:account:presence:write");
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106 module:hook("pre-presence/bare", function (event)
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107 if not event.to_self then return; end
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108 local stanza = event.stanza;
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109 if not module:may("xmpp:account:presence:write", event) then
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110 module:log("warn", "Access denied: xmpp:account:presence:write for %s", event.origin.full_jid or event.origin.id);
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111 event.origin.send(st.error_reply(stanza, "auth", "forbidden", "You do not have permission to send account presence"));
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112 return true;
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113 end
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114 local priority = stanza:get_child_text("priority");
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115 if priority ~= "-1" then
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116 if not module:may("xmpp:account:messages:read", event) then
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117 module:log("warn", "Access denied: xmpp:account:messages:read for %s", event.origin.full_jid or event.origin.id);
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118 event.origin.send(st.error_reply(stanza, "auth", "forbidden", "You do not have permission to receive messages (use presence priority -1)"));
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119 return true;
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120 end
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121 end
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122 end);