local st = require "util.stanza";
local sm_bind_resource = require "core.sessionmanager".bind_resource;
local sm_make_authenticated = require "core.sessionmanager".make_authenticated;
-local s2s_make_authenticated = require "core.s2smanager".make_authenticated;
local base64 = require "util.encodings".base64;
-local cert_verify_identity = require "util.x509".verify_identity;
-
local nodeprep = require "util.encodings".stringprep.nodeprep;
local usermanager_get_sasl_handler = require "core.usermanager".get_sasl_handler;
-local t_concat, t_insert = table.concat, table.insert;
local tostring = tostring;
local secure_auth_only = module:get_option("c2s_require_encryption") or module:get_option("require_encryption");
-local anonymous_login = module:get_option("anonymous_login");
local allow_unencrypted_plain_auth = module:get_option("allow_unencrypted_plain_auth")
local log = module._log;
local xmlns_bind ='urn:ietf:params:xml:ns:xmpp-bind';
local xmlns_stanzas ='urn:ietf:params:xml:ns:xmpp-stanzas';
-local new_sasl = require "util.sasl".new;
-
-local anonymous_authentication_profile = {
- anonymous = function(username, realm)
- return true; -- for normal usage you should always return true here
- end
-};
-
local function build_reply(status, ret, err_msg)
local reply = st.stanza(status, {xmlns = xmlns_sasl});
if status == "challenge" then
return true;
end
-module:hook_stanza(xmlns_sasl, "success", function (session, stanza)
- if session.type ~= "s2sout_unauthed" or session.external_auth ~= "attempting" then return; end
- module:log("debug", "SASL EXTERNAL with %s succeeded", session.to_host);
- session.external_auth = "succeeded"
- session:reset_stream();
-
- local default_stream_attr = {xmlns = "jabber:server", ["xmlns:stream"] = "http://etherx.jabber.org/streams",
- ["xmlns:db"] = 'jabber:server:dialback', version = "1.0", to = session.to_host, from = session.from_host};
- session.sends2s("<?xml version='1.0'?>");
- session.sends2s(st.stanza("stream:stream", default_stream_attr):top_tag());
-
- s2s_make_authenticated(session, session.to_host);
- return true;
-end)
-
-module:hook_stanza(xmlns_sasl, "failure", function (session, stanza)
- if session.type ~= "s2sout_unauthed" or session.external_auth ~= "attempting" then return; end
-
- module:log("info", "SASL EXTERNAL with %s failed", session.to_host)
- -- TODO: Log the failure reason
- session.external_auth = "failed"
-end, 500)
-
-module:hook_stanza(xmlns_sasl, "failure", function (session, stanza)
- -- TODO: Dialback wasn't loaded. Do something useful.
-end, 90)
-
-module:hook_stanza("http://etherx.jabber.org/streams", "features", function (session, stanza)
- if session.type ~= "s2sout_unauthed" or not session.secure then return; end
-
- local mechanisms = stanza:get_child("mechanisms", xmlns_sasl)
- if mechanisms then
- for mech in mechanisms:childtags() do
- if mech[1] == "EXTERNAL" then
- module:log("debug", "Initiating SASL EXTERNAL with %s", session.to_host);
- local reply = st.stanza("auth", {xmlns = xmlns_sasl, mechanism = "EXTERNAL"});
- reply:text(base64.encode(session.from_host))
- session.sends2s(reply)
- session.external_auth = "attempting"
- return true
- end
- end
- end
-end, 150);
-
-local function s2s_external_auth(session, stanza)
- local mechanism = stanza.attr.mechanism;
-
- if not session.secure then
- if mechanism == "EXTERNAL" then
- session.sends2s(build_reply("failure", "encryption-required"))
- else
- session.sends2s(build_reply("failure", "invalid-mechanism"))
- end
- return true;
- end
-
- if mechanism ~= "EXTERNAL" or session.cert_chain_status ~= "valid" then
- session.sends2s(build_reply("failure", "invalid-mechanism"))
- return true;
- end
-
- local text = stanza[1]
- if not text then
- session.sends2s(build_reply("failure", "malformed-request"))
- return true
- end
-
- -- Either the value is "=" and we've already verified the external
- -- cert identity, or the value is a string and either matches the
- -- from_host (
-
- text = base64.decode(text)
- if not text then
- session.sends2s(build_reply("failure", "incorrect-encoding"))
- return true;
- end
-
- if session.cert_identity_status == "valid" then
- if text ~= "" and text ~= session.from_host then
- session.sends2s(build_reply("failure", "invalid-authzid"))
- return true
- end
- else
- if text == "" then
- session.sends2s(build_reply("failure", "invalid-authzid"))
- return true
- end
-
- local cert = session.conn:socket():getpeercertificate()
- if (cert_verify_identity(text, "xmpp-server", cert)) then
- session.cert_identity_status = "valid"
- else
- session.cert_identity_status = "invalid"
- session.sends2s(build_reply("failure", "invalid-authzid"))
- return true
- end
- end
-
- session.external_auth = "succeeded"
-
- if not session.from_host then
- session.from_host = text;
- end
- session.sends2s(build_reply("success"))
- module:log("info", "Accepting SASL EXTERNAL identity from %s", text or session.from_host);
- s2s_make_authenticated(session, text or session.from_host)
- session:reset_stream();
- return true
-end
-
module:hook("stanza/urn:ietf:params:xml:ns:xmpp-sasl:auth", function(event)
local session, stanza = event.origin, event.stanza;
- if session.type == "s2sin_unauthed" then
- return s2s_external_auth(session, stanza)
- end
-
if session.type ~= "c2s_unauthed" then return; end
if session.sasl_handler and session.sasl_handler.selected then
session.sasl_handler = nil; -- allow starting a new SASL negotiation before completing an old one
end
if not session.sasl_handler then
- if anonymous_login then
- session.sasl_handler = new_sasl(module.host, anonymous_authentication_profile);
- else
- session.sasl_handler = usermanager_get_sasl_handler(module.host);
- end
+ session.sasl_handler = usermanager_get_sasl_handler(module.host);
end
local mechanism = stanza.attr.mechanism;
- if anonymous_login then
- if mechanism ~= "ANONYMOUS" then
- session.send(build_reply("failure", "invalid-mechanism"));
- return true;
- end
- elseif mechanism == "ANONYMOUS" then
- session.send(build_reply("failure", "mechanism-too-weak"));
- return true;
- end
if not session.secure and (secure_auth_only or (mechanism == "PLAIN" and not allow_unencrypted_plain_auth)) then
session.send(build_reply("failure", "encryption-required"));
return true;
if secure_auth_only and not origin.secure then
return;
end
- if anonymous_login then
- origin.sasl_handler = new_sasl(module.host, anonymous_authentication_profile);
- else
- origin.sasl_handler = usermanager_get_sasl_handler(module.host);
- end
+ origin.sasl_handler = usermanager_get_sasl_handler(module.host);
features:tag("mechanisms", mechanisms_attr);
for mechanism in pairs(origin.sasl_handler:mechanisms()) do
if mechanism ~= "PLAIN" or origin.secure or allow_unencrypted_plain_auth then
end
end);
-module:hook("s2s-stream-features", function(event)
- local origin, features = event.origin, event.features;
- if origin.secure and origin.type == "s2sin_unauthed" then
- -- Offer EXTERNAL if chain is valid and either we didn't validate
- -- the identity or it passed.
- if origin.cert_chain_status == "valid" and origin.cert_identity_status ~= "invalid" then --TODO: Configurable
- module:log("debug", "Offering SASL EXTERNAL")
- features:tag("mechanisms", { xmlns = xmlns_sasl })
- :tag("mechanism"):text("EXTERNAL")
- :up():up();
- end
- end
-end);
-
module:hook("iq/self/urn:ietf:params:xml:ns:xmpp-bind:bind", function(event)
local origin, stanza = event.origin, event.stanza;
local resource;
return true;
end);
-module:hook("iq/self/urn:ietf:params:xml:ns:xmpp-session:session", function(event)
+local function handle_legacy_session(event)
event.origin.send(st.reply(event.stanza));
return true;
-end);
+end
+
+module:hook("iq/self/urn:ietf:params:xml:ns:xmpp-session:session", handle_legacy_session);
+module:hook("iq/host/urn:ietf:params:xml:ns:xmpp-session:session", handle_legacy_session);
projects / prosody.git / blobdiff