Mercurial > prosody-modules
view mod_ipcheck/mod_ipcheck.lua @ 5193:2bb29ece216b
mod_http_oauth2: Implement stateless dynamic client registration
Replaces previous explicit registration that required either the
additional module mod_adhoc_oauth2_client or manually editing the
database. That method was enough to have something to test with, but
would not probably not scale easily.
Dynamic client registration allows creating clients on the fly, which
may be even easier in theory.
In order to not allow basically unauthenticated writes to the database,
we implement a stateless model here.
per_host_key := HMAC(config -> oauth2_registration_key, hostname)
client_id := JWT { client metadata } signed with per_host_key
client_secret := HMAC(per_host_key, client_id)
This should ensure everything we need to know is part of the client_id,
allowing redirects etc to be validated, and the client_secret can be
validated with only the client_id and the per_host_key.
A nonce injected into the client_id JWT should ensure nobody can submit
the same client metadata and retrieve the same client_secret
| author | Kim Alvefur <zash@zash.se> |
|---|---|
| date | Fri, 03 Mar 2023 21:14:19 +0100 |
| parents | b0628bc93acf |
| children |
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-- mod_ipcheck.lua -- Implementation of XEP-0279: Server IP Check <http://xmpp.org/extensions/xep-0279.html> local st = require "util.stanza"; module:add_feature("urn:xmpp:sic:0"); module:hook("iq-get/bare/urn:xmpp:sic:0:ip", function(event) local origin, stanza = event.origin, event.stanza; if stanza.attr.to then origin.send(st.error_reply(stanza, "auth", "forbidden", "You can only ask about your own IP address")); elseif origin.ip then origin.send(st.reply(stanza):tag("ip", {xmlns='urn:xmpp:sic:0'}):text(origin.ip)); else -- IP addresses should normally be available, but in case they are not origin.send(st.error_reply(stanza, "cancel", "service-unavailable", "IP address for this session is not available")); end return true; end); module:add_feature("urn:xmpp:sic:1"); module:hook("iq-get/bare/urn:xmpp:sic:1:address", function(event) local origin, stanza = event.origin, event.stanza; if stanza.attr.to then origin.send(st.error_reply(stanza, "auth", "forbidden", "You can only ask about your own IP address")); elseif origin.ip then local reply = st.reply(stanza):tag("address", {xmlns='urn:xmpp:sic:1'}) :tag("ip"):text(origin.ip):up() if origin.conn and origin.conn.port then -- server_event reply:tag("port"):text(tostring(origin.conn:port())) elseif origin.conn and origin.conn.clientport then -- server_select reply:tag("port"):text(tostring(origin.conn:clientport())) end origin.send(reply); else -- IP addresses should normally be available, but in case they are not origin.send(st.error_reply(stanza, "cancel", "service-unavailable", "IP address for this session is not available")); end return true; end);