Basic CherryPy FastCGI handler

[invirt/packages/invirt-web.git] / code / getafsgroups.py

diff --git a/code/getafsgroups.py b/code/getafsgroups.py
old mode 100644 (file)
new mode 100755 (executable)
index e2fece0..fed3a6b
--- a/code/getafsgroups.py
+++ b/code/getafsgroups.py
@@ -1,6 +1,7 @@
 #!/usr/bin/python
 import pprint
 import subprocess
+from invirt.config import structs as config
 
 # import ldap
 # l = ldap.open("W92-130-LDAP-2.mit.edu")
@@ -28,10 +29,18 @@ class AfsProcessError(Exception):
     pass
 
 def getAfsGroupMembers(group, cell):
-    p = subprocess.Popen(["pts", "membership", group, '-c', cell], 
+    encrypt = True
+    for c in config.authz.afs.cells:
+        if c.cell == cell and hasattr(c, 'auth'):
+            encrypt = c.auth
+    subprocess.check_call(['aklog', cell], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+    p = subprocess.Popen(["pts", "membership", "-encrypt" if encrypt else '-noauth', group, '-c', cell],
                          stdout=subprocess.PIPE, stderr=subprocess.PIPE)
-    if p.wait():
-        return []
+    err = p.stderr.read()
+    if err: #Error code doesn't reveal missing groups, but stderr does
+        if err.startswith('pts: Permission denied ; unable to get membership of '):
+            return []
+        raise AfsProcessError(err)
     return [line.strip() for line in p.stdout.readlines()[1:]]
 
 def getLockerPath(locker):
@@ -39,12 +48,6 @@ def getLockerPath(locker):
         raise AfsProcessError("Locker '%s' is invalid." % locker)
     return '/mit/' + locker
 
-def checkAfsGroup(user, group, cell):
-    """
-    checkAfsGroup(user, group) returns True if and only if user is in AFS group group in cell cell
-    """
-    return user in getAfsGroupMembers(group, cell)
-
 def getCell(locker):
     p = subprocess.Popen(["fs", "whichcell", getLockerPath(locker)], 
                          stdout=subprocess.PIPE, stderr=subprocess.PIPE)
@@ -81,18 +84,18 @@ def notLockerOwner(user, locker):
         return str(e)
 
     for entry in values:
-        if entry == user or (entry[0:6] == "system" and 
-                                checkAfsGroup(user, entry, cell)):
+        if entry == user or (entry[0:6] == "system" and
+                                user in getAfsGroupMembers(entry, cell)):
             return False
     return "You don't have admin bits on " + getLockerPath(locker)
 
 
 if __name__ == "__main__":
 #    print list(getldapgroups("tabbott"))
-    print checkAfsGroup("tabbott", "system:debathena", 'athena.mit.edu')
-    print checkAfsGroup("tabbott", "system:debathena", 'sipb.mit.edu')
-    print checkAfsGroup("tabbott", "system:debathena-root", 'athena.mit.edu')
-    print checkAfsGroup("tabbott", "system:hmmt-request", 'athena.mit.edu')
+    print "tabbott" in getAfsGroupMembers("system:debathena", 'athena.mit.edu')
+    print "tabbott" in getAfsGroupMembers("system:debathena", 'sipb.mit.edu')
+    print "tabbott" in getAfsGroupMembers("system:debathena-root", 'athena.mit.edu')
+    print "tabbott" in getAfsGroupMembers("system:hmmt-request", 'athena.mit.edu')
     print notLockerOwner("tabbott", "tabbott")
     print notLockerOwner("tabbott", "debathena")
     print notLockerOwner("tabbott", "sipb")