Use API function instead of UNUSABLE_PASSWORD

[snippets/.git] / __init__.py

diff --git a/__init__.py b/__init__.py
index 62ec848eea86c20692bfbdd13bf0bafa15b4a54d..73e7e88d4978a4933a071432dcb0c55b73d939cc 100644 (file)
--- a/__init__.py
+++ b/__init__.py
@@ -1,9 +1,11 @@
+import os
 import subprocess
+import tempfile
 import ldap
 import ldap.filter
 
-from django.contrib.auth.middleware import RemoteUserMiddleware
 from django.contrib.auth.backends import RemoteUserBackend
+from django.contrib.auth.middleware import RemoteUserMiddleware
 from django.contrib.auth.views import login
 from django.contrib.auth import REDIRECT_FIELD_NAME
 from django.http import HttpResponseRedirect
@@ -11,7 +13,7 @@ from django.contrib import auth
 from django.core.exceptions import ObjectDoesNotExist
 from django.core.validators import URLValidator, ValidationError
 
-import settings
+from django.conf import settings
 
 def zephyr(msg, clas='message', instance='log', rcpt='nobody',):
     proc = subprocess.Popen(
@@ -29,6 +31,44 @@ def UrlOrAfsValidator(value):
         except ValidationError:
             raise ValidationError('Provide a valid URL or AFS path')
 
+def pag_check_helper(fn, args, aklog=False, ccname=None, **kwargs):
+    if 'executable' in kwargs:
+        raise ValueError('"executable" not supported with pag_check_*')
+
+    env = None
+    if 'env' in kwargs:
+        env = kwargs['env']
+        del kwargs['env']
+    if ccname:
+        if env is not None:
+            env = dict(env)
+        else:
+            env = dict(os.environ)
+        env['KRB5CCNAME'] = ccname
+
+    pagsh_cmd = 'exec "$@"'
+    if aklog: pagsh_cmd = "aklog && " + pagsh_cmd
+    args = ['pagsh', '-c', pagsh_cmd, 'exec', ] + args
+
+    return fn(args, env=env, **kwargs)
+
+def pag_check_call(args, **kwargs):
+    return pag_check_helper(subprocess.check_call, args, **kwargs)
+def pag_check_output(args, **kwargs):
+    return pag_check_helper(subprocess.check_output, args, **kwargs)
+
+def kinit(keytab=None, principal=None, autodelete=True, ):
+    if not keytab:
+        keytab = settings.KRB_KEYTAB
+    if not principal:
+        principal = settings.KRB_PRINCIPAL
+    assert keytab and principal
+    fd = tempfile.NamedTemporaryFile(mode='rb', prefix="krb5cc_djmit_", delete=autodelete, )
+    env = dict(KRB5CCNAME=fd.name)
+    kinit_cmd = ['kinit', '-k', '-t', keytab, principal, ]
+    subprocess.check_call(kinit_cmd, env=env)
+    return fd
+
 class ScriptsRemoteUserMiddleware(RemoteUserMiddleware):
     header = 'SSL_CLIENT_S_DN_Email'
 
@@ -42,7 +82,7 @@ class ScriptsRemoteUserBackend(RemoteUserBackend):
             return username
     def configure_user(self, user, ):
         username = user.username
-        user.password = "ScriptsSSLAuth"
+        user.set_unusable_password()
         con = ldap.open('ldap-too.mit.edu')
         con.simple_bind_s("", "")
         dn = "dc=mit,dc=edu"