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annotate mod_ipcheck/mod_ipcheck.lua @ 5461:06640647d193

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mod_http_oauth2: Fix use of arbitrary ports in loopback redirect URIs Per draft-ietf-oauth-v2-1-08#section-8.4.2 > The authorization server MUST allow any port to be specified at the > time of the request for loopback IP redirect URIs, to accommodate > clients that obtain an available ephemeral port from the operating > system at the time of the request. Uncertain if it should normalize the host part, but it also seems harmless to treat IPv6 and IPv4 the same here. One thing is that "localhost" is NOT RECOMMENDED because it can sometimes be pointed to non-loopback interfaces via DNS or hosts file.
author Kim Alvefur <zash@zash.se>
date Wed, 17 May 2023 13:51:30 +0200
parents b0628bc93acf
children
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51cd803e86be mod_ipcheck: Initial commit. An implementation of the Server IP Check proto-XEP.
Waqas Hussain <waqas20@gmail.com>
parents:
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1
51cd803e86be mod_ipcheck: Initial commit. An implementation of the Server IP Check proto-XEP.
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parents:
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2 -- mod_ipcheck.lua
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0525c66e7d13 mod_ipcheck: Updated XEP number and URL in comments to the newly published XEP.
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3 -- Implementation of XEP-0279: Server IP Check <http://xmpp.org/extensions/xep-0279.html>
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51cd803e86be mod_ipcheck: Initial commit. An implementation of the Server IP Check proto-XEP.
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5 local st = require "util.stanza";
51cd803e86be mod_ipcheck: Initial commit. An implementation of the Server IP Check proto-XEP.
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7 module:add_feature("urn:xmpp:sic:0");
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8
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Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 1945
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9 module:hook("iq-get/bare/urn:xmpp:sic:0:ip", function(event)
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10 local origin, stanza = event.origin, event.stanza;
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11 if stanza.attr.to then
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12 origin.send(st.error_reply(stanza, "auth", "forbidden", "You can only ask about your own IP address"));
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parents: 1945
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13 elseif origin.ip then
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14 origin.send(st.reply(stanza):tag("ip", {xmlns='urn:xmpp:sic:0'}):text(origin.ip));
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parents: 1945
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15 else
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16 -- IP addresses should normally be available, but in case they are not
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17 origin.send(st.error_reply(stanza, "cancel", "service-unavailable", "IP address for this session is not available"));
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parents:
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18 end
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19 return true;
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20 end);
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21
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22 module:add_feature("urn:xmpp:sic:1");
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23
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24 module:hook("iq-get/bare/urn:xmpp:sic:1:address", function(event)
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25 local origin, stanza = event.origin, event.stanza;
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parents: 1945
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26 if stanza.attr.to then
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parents: 1945
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27 origin.send(st.error_reply(stanza, "auth", "forbidden", "You can only ask about your own IP address"));
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parents: 1945
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28 elseif origin.ip then
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29 local reply = st.reply(stanza):tag("address", {xmlns='urn:xmpp:sic:1'})
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30 :tag("ip"):text(origin.ip):up()
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parents: 1945
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31 if origin.conn and origin.conn.port then -- server_event
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parents: 1945
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32 reply:tag("port"):text(tostring(origin.conn:port()))
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parents: 1945
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33 elseif origin.conn and origin.conn.clientport then -- server_select
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parents: 1945
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34 reply:tag("port"):text(tostring(origin.conn:clientport()))
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35 end
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parents: 1945
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36 origin.send(reply);
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parents: 1945
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37 else
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parents: 1945
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38 -- IP addresses should normally be available, but in case they are not
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Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents: 1945
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39 origin.send(st.error_reply(stanza, "cancel", "service-unavailable", "IP address for this session is not available"));
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40 end
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41 return true;
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42 end);