From 1bfa7cb92f2370c56e85b301af6b2f120835b4ee Mon Sep 17 00:00:00 2001
From: Andrew Williams <andy@tensixtyone.com>
Date: Mon, 14 Jun 2010 13:13:21 +0100
Subject: [PATCH] Added Simple Hash backend for use with external tools

---
 sso/backends.py | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 sso/backends.py

diff --git a/sso/backends.py b/sso/backends.py
new file mode 100644
index 0000000..c538c9c
--- /dev/null
+++ b/sso/backends.py
@@ -0,0 +1,24 @@
+from django.contrib.auth.backends import ModelBackend
+from django.contrib.auth.models import User
+from hashlib import sha1
+
+
+class SimpleHashModelBackend(ModelBackend):
+
+    def authenticate(self, username=None, password=None):
+        try:
+            user = User.objects.get(username=username)
+        except User.DoesNotExist:
+            return None
+
+        if '$' in user.password:
+            if user.check_password(password)
+                user.password = sha1(password).hexdigest()
+                user.save()
+                return user
+        else:
+            if user.password == sha1(password).hexdigest():
+                return user
+
+        return None
+