Fixed #6273 -- Added a 'changepassword' management command. Thanks to Ludvig Ericson and Justin Lilly for their work on this patch.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@12351 bcc190cf-cafb-0310-a4f2-bffc1f526a37

django/contrib/auth/management/commands/changepassword.py

@@ -0,0 +1,48 @@
+from django.core.management.base import BaseCommand, CommandError
+from django.contrib.auth.models import User
+import getpass
+
+class Command(BaseCommand):
+    help = "Change a user's password for django.contrib.auth."
+
+    requires_model_validation = False
+
+    def _get_pass(self, prompt="Password: "):
+        p = getpass.getpass(prompt=prompt)
+        if not p:
+            raise CommandError("aborted")
+        return p
+
+    def handle(self, *args, **options):
+        if len(args) > 1:
+            raise CommandError("need exactly one or zero arguments for username")
+
+        if args:
+            username, = args
+        else:
+            username = getpass.getuser()
+
+        try:
+            u = User.objects.get(username=username)
+        except User.DoesNotExist:
+            raise CommandError("user '%s' does not exist" % username)
+
+        print "Changing password for user '%s'" % u.username
+
+        MAX_TRIES = 3
+        count = 0
+        p1, p2 = 1, 2  # To make them initially mismatch.
+        while p1 != p2 and count < MAX_TRIES:
+            p1 = self._get_pass()
+            p2 = self._get_pass("Password (again): ")
+            if p1 != p2:
+                print "Passwords do not match. Please try again."
+                count = count + 1
+
+        if count == MAX_TRIES:
+            raise CommandError("Aborting password change for user '%s' after %s attempts" % (username, count))
+
+        u.set_password(p1)
+        u.save()
+
+        return "Password changed successfully for user '%s'" % u.username