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-rw-r--r--plugins/mod_dialback.lua37
1 files changed, 29 insertions, 8 deletions
diff --git a/plugins/mod_dialback.lua b/plugins/mod_dialback.lua
index e27f8657..e578c412 100644
--- a/plugins/mod_dialback.lua
+++ b/plugins/mod_dialback.lua
@@ -6,22 +6,36 @@
-- COPYING file in the source package for more information.
--
+local format = string.format;
local hosts = _G.hosts;
-local send_s2s = require "core.s2smanager".send_to_host;
local s2s_make_authenticated = require "core.s2smanager".make_authenticated;
-local s2s_initiate_dialback = require "core.s2smanager".initiate_dialback;
-local s2s_verify_dialback = require "core.s2smanager".verify_dialback;
local log = module._log;
local st = require "util.stanza";
+local sha256_hash = require "util.hashes".sha256;
local xmlns_stream = "http://etherx.jabber.org/streams";
local xmlns_dialback = "jabber:server:dialback";
local dialback_requests = setmetatable({}, { __mode = 'v' });
+function generate_dialback(id, to, from)
+ return sha256_hash(id..to..from..hosts[from].dialback_secret, true);
+end
+
+function initiate_dialback(session)
+ -- generate dialback key
+ session.dialback_key = generate_dialback(session.streamid, session.to_host, session.from_host);
+ session.sends2s(format("<db:result from='%s' to='%s'>%s</db:result>", session.from_host, session.to_host, session.dialback_key));
+ session.log("info", "sent dialback key on outgoing s2s stream");
+end
+
+function verify_dialback(id, to, from, key)
+ return key == generate_dialback(id, to, from);
+end
+
module:hook("stanza/jabber:server:dialback:verify", function(event)
local origin, stanza = event.origin, event.stanza;
@@ -32,7 +46,7 @@ module:hook("stanza/jabber:server:dialback:verify", function(event)
-- COMPAT: Grr, ejabberd breaks this one too?? it is black and white in XEP-220 example 34
--if attr.from ~= origin.to_host then error("invalid-from"); end
local type;
- if s2s_verify_dialback(attr.id, attr.from, attr.to, stanza[1]) then
+ if verify_dialback(attr.id, attr.from, attr.to, stanza[1]) then
type = "valid"
else
type = "invalid"
@@ -72,8 +86,7 @@ module:hook("stanza/jabber:server:dialback:result", function(event)
end
origin.log("debug", "asking %s if key %s belongs to them", attr.from, stanza[1]);
- send_s2s(attr.to, attr.from,
- st.stanza("db:verify", { from = attr.to, to = attr.from, id = origin.streamid }):text(stanza[1]));
+ origin.send(st.stanza("db:verify", { from = attr.to, to = attr.from, id = origin.streamid }):text(stanza[1]));
return true;
end
end);
@@ -84,6 +97,7 @@ module:hook("stanza/jabber:server:dialback:verify", function(event)
if origin.type == "s2sout_unauthed" or origin.type == "s2sout" then
local attr = stanza.attr;
local dialback_verifying = dialback_requests[attr.from.."/"..(attr.id or "")];
+ module:log("debug", tostring(dialback_verifying).." "..attr.from.." "..origin.to_host);
if dialback_verifying and attr.from == origin.to_host then
local valid;
if attr.type == "valid" then
@@ -134,18 +148,25 @@ end);
module:hook_stanza("urn:ietf:params:xml:ns:xmpp-sasl", "failure", function (origin, stanza)
if origin.external_auth == "failed" then
module:log("debug", "SASL EXTERNAL failed, falling back to dialback");
- s2s_initiate_dialback(origin);
+ initiate_dialback(origin);
return true;
end
end, 100);
module:hook_stanza(xmlns_stream, "features", function (origin, stanza)
if not origin.external_auth or origin.external_auth == "failed" then
- s2s_initiate_dialback(origin);
+ module:log("debug", "Initiating dialback...");
+ initiate_dialback(origin);
return true;
end
end, 100);
+module:hook("s2s-authenticate-legacy", function (event)
+ module:log("debug", "Initiating dialback...");
+ initiate_dialback(event.origin);
+ return true;
+end, 100);
+
-- Offer dialback to incoming hosts
module:hook("s2s-stream-features", function (data)
data.features:tag("dialback", { xmlns='urn:xmpp:features:dialback' }):up();