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75 lines
3.0 KiB
75 lines
3.0 KiB
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local format = string.format;
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local send_s2s = require "core.s2smanager".send_to_host;
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local s2s_make_authenticated = require "core.s2smanager".make_authenticated;
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local s2s_verify_dialback = require "core.s2smanager".verify_dialback;
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local log = require "util.logger".init("mod_dialback");
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local xmlns_dialback = "jabber:server:dialback";
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module:add_handler({"s2sin_unauthed", "s2sin"}, "verify", xmlns_dialback,
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function (origin, stanza)
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-- We are being asked to verify the key, to ensure it was generated by us
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log("debug", "verifying dialback key...");
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local attr = stanza.attr;
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-- FIXME: Grr, ejabberd breaks this one too?? it is black and white in XEP-220 example 34
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--if attr.from ~= origin.to_host then error("invalid-from"); end
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local type;
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if s2s_verify_dialback(attr.id, attr.from, attr.to, stanza[1]) then
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type = "valid"
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else
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type = "invalid"
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log("warn", "Asked to verify a dialback key that was incorrect. An imposter is claiming to be %s?", attr.to);
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end
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log("debug", "verifyied dialback key... it is %s", type);
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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]));
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end);
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module:add_handler("s2sin_unauthed", "result", xmlns_dialback,
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function (origin, stanza)
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-- he wants to be identified through dialback
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-- We need to check the key with the Authoritative server
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local attr = stanza.attr;
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local attr = stanza.attr;
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origin.from_host = attr.from;
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origin.to_host = attr.to;
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origin.dialback_key = stanza[1];
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log("debug", "asking %s if key %s belongs to them", origin.from_host, origin.dialback_key);
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send_s2s(origin.to_host, origin.from_host,
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format("<db:verify from='%s' to='%s' id='%s'>%s</db:verify>", origin.to_host, origin.from_host,
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origin.streamid, origin.dialback_key));
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hosts[origin.to_host].s2sout[origin.from_host].dialback_verifying = origin;
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end);
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module:add_handler({ "s2sout_unauthed", "s2sout" }, "verify", xmlns_dialback,
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function (origin, stanza)
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if origin.dialback_verifying then
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local valid;
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local attr = stanza.attr;
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if attr.type == "valid" then
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s2s_make_authenticated(origin.dialback_verifying);
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valid = "valid";
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else
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-- Warn the original connection that is was not verified successfully
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log("warn", "dialback for "..(origin.dialback_verifying.from_host or "(unknown)").." failed");
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valid = "invalid";
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end
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if not origin.dialback_verifying.sends2s then
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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+$"));
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else
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origin.dialback_verifying.sends2s(format("<db:result from='%s' to='%s' id='%s' type='%s'>%s</db:result>",
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attr.to, attr.from, attr.id, valid, origin.dialback_verifying.dialback_key));
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end
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end
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end);
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module:add_handler({ "s2sout_unauthed", "s2sout" }, "result", xmlns_dialback,
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function (origin, stanza)
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if stanza.attr.type == "valid" then
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s2s_make_authenticated(origin);
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else
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-- FIXME
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error("dialback failed!");
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end
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end);
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