SASLprep authentication and password in SASL PLAIN implementation.

1 files changed, 10 insertions, 0 deletions

diff --git a/util/sasl/plain.lua b/util/sasl/plain.lua
index 08056053..d9fdb9a2 100644
--- a/util/sasl/plain.lua
+++ b/util/sasl/plain.lua
@@ -12,6 +12,8 @@
 --    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 local s_match = string.match;
+local saslprep = require "util.encodings".stringprep.saslprep;
+local log = require "util.logger".init("sasl");
 
 module "plain"
 
@@ -26,6 +28,14 @@ local function plain(self, message)
 	if authentication == nil or password == nil 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 either SASLprep.");
+	end
 
 	local correct, state = false, false;
 	if self.profile.plain then