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-rw-r--r--util/sasl/plain.lua21
1 files changed, 11 insertions, 10 deletions
diff --git a/util/sasl/plain.lua b/util/sasl/plain.lua
index 46a86bb9..ae5c777a 100644
--- a/util/sasl/plain.lua
+++ b/util/sasl/plain.lua
@@ -17,22 +17,23 @@ local log = require "util.logger".init("sasl");
module "plain"
---=========================
---SASL PLAIN according to RFC 4616
+-- ================================
+-- SASL PLAIN according to RFC 4616
local function plain(self, message)
- local response = message
- local authorization = s_match(response, "([^%z]+)")
- local authentication = s_match(response, "%z([^%z]+)%z")
- local password = s_match(response, "%z[^%z]+%z([^%z]+)")
+ if not message then
+ return "failure", "malformed-request";
+ end
+
+ local authorization, authentication, password = s_match(message, "^([^%z]*)%z([^%z]+)%z([^%z]+)");
- if authentication == nil or password == nil then
+ if not authorization then
return "failure", "malformed-request";
end
-
+
-- SASLprep password and authentication
authentication = saslprep(authentication);
password = saslprep(password);
-
+
if (not password) or (password == "") or (not authentication) or (authentication == "") then
log("debug", "Username or password violates SASLprep.");
return "failure", "malformed-request", "Invalid username or password.";
@@ -63,4 +64,4 @@ function init(registerMechanism)
registerMechanism("PLAIN", {"plain", "plain_test"}, plain);
end
-return _M; \ No newline at end of file
+return _M;