0.3->0.4
[prosody.git] / plugins / mod_dialback.lua
index 59fc4332c3511586a7654939ce6a5aee25a21c96..042e20878188fcffee21baaf947d8af854711312 100644 (file)
@@ -1,20 +1,9 @@
--- Prosody IM v0.2
--- Copyright (C) 2008 Matthew Wild
--- Copyright (C) 2008 Waqas Hussain
+-- Prosody IM v0.4
+-- Copyright (C) 2008-2009 Matthew Wild
+-- Copyright (C) 2008-2009 Waqas Hussain
 -- 
--- This program is free software; you can redistribute it and/or
--- modify it under the terms of the GNU General Public License
--- as published by the Free Software Foundation; either version 2
--- of the License, or (at your option) any later version.
--- 
--- This program is distributed in the hope that it will be useful,
--- but WITHOUT ANY WARRANTY; without even the implied warranty of
--- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
--- GNU General Public License for more details.
--- 
--- You should have received a copy of the GNU General Public License
--- along with this program; if not, write to the Free Software
--- Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+-- This project is MIT/X11 licensed. Please see the
+-- COPYING file in the source package for more information.
 --
 
 
@@ -22,6 +11,7 @@
 local send_s2s = require "core.s2smanager".send_to_host;
 local s2s_make_authenticated = require "core.s2smanager".make_authenticated;
 local s2s_verify_dialback = require "core.s2smanager".verify_dialback;
+local s2s_destroy_session = require "core.s2smanager".destroy_session;
 
 local st = require "util.stanza";
 
@@ -29,6 +19,8 @@ local log = require "util.logger".init("mod_dialback");
 
 local xmlns_dialback = "jabber:server:dialback";
 
+local dialback_requests = setmetatable({}, { __mode = 'v' });
+
 module:add_handler({"s2sin_unauthed", "s2sin"}, "verify", xmlns_dialback,
        function (origin, stanza)
                -- We are being asked to verify the key, to ensure it was generated by us
@@ -47,50 +39,77 @@ module:add_handler({"s2sin_unauthed", "s2sin"}, "verify", xmlns_dialback,
                origin.sends2s(st.stanza("db:verify", { from = attr.to, to = attr.from, id = attr.id, type = type }):text(stanza[1]));
        end);
 
-module:add_handler("s2sin_unauthed", "result", xmlns_dialback,
+module:add_handler({ "s2sin_unauthed", "s2sin" }, "result", xmlns_dialback,
        function (origin, stanza)
                -- he wants to be identified through dialback
                -- We need to check the key with the Authoritative server
                local attr = stanza.attr;
-               local attr = stanza.attr;
-               origin.from_host = attr.from;
-               origin.to_host = attr.to;
-               origin.dialback_key = stanza[1];
-               log("debug", "asking %s if key %s belongs to them", origin.from_host, origin.dialback_key);
-               send_s2s(origin.to_host, origin.from_host,
-                       st.stanza("db:verify", { from = origin.to_host, to = origin.from_host, id = origin.streamid }):text(origin.dialback_key));
-               hosts[origin.to_host].s2sout[origin.from_host].dialback_verifying = origin;
+               origin.hosts[attr.from] = { dialback_key = stanza[1] };
+               
+               if not hosts[attr.to] then
+                       -- Not a host that we serve
+                       log("info", "%s tried to connect to %s, which we don't serve", attr.from, attr.to);
+                       origin:close("host-unknown");
+                       return;
+               end
+               
+               dialback_requests[attr.from] = origin;
+               
+               if not origin.from_host then
+                       -- Just used for friendlier logging
+                       origin.from_host = attr.from;
+               end
+               if not origin.to_host then
+                       -- Just used for friendlier logging
+                       origin.to_host = attr.to;
+               end
+               
+               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]));
        end);
 
 module:add_handler({ "s2sout_unauthed", "s2sout" }, "verify", xmlns_dialback,
        function (origin, stanza)
-               if origin.dialback_verifying then
+               local attr = stanza.attr;
+               local dialback_verifying = dialback_requests[attr.from];
+               if dialback_verifying then
                        local valid;
-                       local attr = stanza.attr;
                        if attr.type == "valid" then
-                               s2s_make_authenticated(origin.dialback_verifying);
+                               s2s_make_authenticated(dialback_verifying, attr.from);
                                valid = "valid";
                        else
                                -- Warn the original connection that is was not verified successfully
-                               log("warn", "dialback for "..(origin.dialback_verifying.from_host or "(unknown)").." failed");
+                               log("warn", "authoritative server for "..(attr.from or "(unknown)").." denied the key");
                                valid = "invalid";
                        end
-                       if not origin.dialback_verifying.sends2s then
-                               log("warn", "Incoming s2s session %s was closed in the meantime, so we can't notify it of the db result", tostring(origin.dialback_verifying):match("%w+$"));
+                       if not dialback_verifying.sends2s then
+                               log("warn", "Incoming s2s session %s was closed in the meantime, so we can't notify it of the db result", tostring(dialback_verifying):match("%w+$"));
                        else
-                               origin.dialback_verifying.sends2s(
+                               dialback_verifying.sends2s(
                                                st.stanza("db:result", { from = attr.to, to = attr.from, id = attr.id, type = valid })
-                                                               :text(origin.dialback_verifying.dialback_key));
+                                                               :text(dialback_verifying.hosts[attr.from].dialback_key));
                        end
+                       dialback_requests[attr.from] = nil;
                end
        end);
 
 module:add_handler({ "s2sout_unauthed", "s2sout" }, "result", xmlns_dialback,
        function (origin, stanza)
+               -- Remote server is telling us whether we passed dialback
+               
+               local attr = stanza.attr;
+               if not hosts[attr.to] then
+                       origin:close("host-unknown");
+                       return;
+               elseif hosts[attr.to].s2sout[attr.from] ~= origin then
+                       -- This isn't right
+                       origin:close("invalid-id");
+                       return;
+               end
                if stanza.attr.type == "valid" then
-                       s2s_make_authenticated(origin);
+                       s2s_make_authenticated(origin, attr.from);
                else
-                       -- FIXME
-                       error("dialback failed!");
+                       s2s_destroy_session(origin)
                end
        end);