+-- Prosody IM v0.2
+-- Copyright (C) 2008 Matthew Wild
+-- Copyright (C) 2008 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.
+--
+
+
-local format = string.format;
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 st = require "util.stanza";
+
local log = require "util.logger".init("mod_dialback");
local xmlns_dialback = "jabber:server:dialback";
-add_handler({"s2sin_unauthed", "s2sin"}, "verify", xmlns_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
log("debug", "verifying dialback key...");
type = "invalid"
log("warn", "Asked to verify a dialback key that was incorrect. An imposter is claiming to be %s?", attr.to);
end
- log("debug", "verifyied dialback key... it is %s", type);
- origin.sends2s(format("<db:verify from='%s' to='%s' id='%s' type='%s'>%s</db:verify>", attr.to, attr.from, attr.id, type, stanza[1]));
+ log("debug", "verified dialback key... it is %s", type);
+ origin.sends2s(st.stanza("db:verify", { from = attr.to, to = attr.from, id = attr.id, type = type }):text(stanza[1]));
end);
-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,
- format("<db:verify from='%s' to='%s' id='%s'>%s</db:verify>", origin.to_host, origin.from_host,
- origin.streamid, origin.dialback_key));
- hosts[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);
-add_handler({ "s2sout_unauthed", "s2sout" }, "verify", xmlns_dialback,
+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
- origin.dialback_verifying.sends2s(format("<db:result from='%s' to='%s' id='%s' type='%s'>%s</db:result>",
- attr.from, attr.to, attr.id, valid, origin.dialback_verifying.dialback_key));
+ 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
+ dialback_verifying.sends2s(
+ st.stanza("db:result", { from = attr.to, to = attr.from, id = attr.id, type = valid })
+ :text(dialback_verifying.hosts[attr.from].dialback_key));
+ end
+ dialback_requests[attr.from] = nil;
end
end);
-add_handler({ "s2sout_unauthed", "s2sout" }, "result", xmlns_dialback,
+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
+ -- FIXME: Waiting on #33
error("dialback failed!");
end
end);
projects / prosody.git / blobdiff