diff options
Diffstat (limited to 'plugins/mod_dialback.lua')
| -rw-r--r-- | plugins/mod_dialback.lua | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/plugins/mod_dialback.lua b/plugins/mod_dialback.lua new file mode 100644 index 00000000..9ff181b7 --- /dev/null +++ b/plugins/mod_dialback.lua @@ -0,0 +1,67 @@ + +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 log = require "util.logger".init("mod_dialback"); + +local xmlns_dialback = "jabber:server:dialback"; + +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..."); + local attr = stanza.attr; + -- FIXME: 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 + type = "valid" + else + type = "invalid" + log("warn", "Asked to verify a dialback key that was incorrect. An imposter is claiming to be %s?", attr.to); + end + 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])); + end); + +add_handler("s2sin_unauthed", "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; + end); + +add_handler({ "s2sout_unauthed", "s2sout" }, "verify", xmlns_dialback, + function (origin, stanza) + if origin.dialback_verifying then + local valid; + local attr = stanza.attr; + if attr.type == "valid" then + s2s_make_authenticated(origin.dialback_verifying); + 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"); + 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)); + end + end); + +add_handler({ "s2sout_unauthed", "s2sout" }, "result", xmlns_dialback, + function (origin, stanza) + if stanza.attr.type == "valid" then + s2s_make_authenticated(origin); + else + -- FIXME + error("dialback failed!"); + end + end);
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