256 lines
8.8 KiB
Python
256 lines
8.8 KiB
Python
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import os
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import ntsecuritycon
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import pythoncom
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import win32api
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import win32com.server.policy
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import win32con
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import win32security
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from ntsecuritycon import (
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CONTAINER_INHERIT_ACE,
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FILE_ALL_ACCESS,
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FILE_APPEND_DATA,
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FILE_GENERIC_EXECUTE,
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FILE_GENERIC_READ,
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FILE_GENERIC_WRITE,
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FILE_READ_ATTRIBUTES,
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FILE_READ_DATA,
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FILE_READ_EA,
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FILE_WRITE_ATTRIBUTES,
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FILE_WRITE_DATA,
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FILE_WRITE_EA,
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INHERIT_ONLY_ACE,
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OBJECT_INHERIT_ACE,
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PSPCB_SI_INITDIALOG,
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READ_CONTROL,
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SI_ACCESS_CONTAINER,
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SI_ACCESS_GENERAL,
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SI_ACCESS_PROPERTY,
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SI_ACCESS_SPECIFIC,
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SI_ADVANCED,
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SI_CONTAINER,
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SI_EDIT_ALL,
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SI_EDIT_AUDITS,
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SI_EDIT_PROPERTIES,
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SI_PAGE_ADVPERM,
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SI_PAGE_AUDIT,
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SI_PAGE_OWNER,
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SI_PAGE_PERM,
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SI_PAGE_TITLE,
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SI_RESET,
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STANDARD_RIGHTS_EXECUTE,
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STANDARD_RIGHTS_READ,
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STANDARD_RIGHTS_WRITE,
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SYNCHRONIZE,
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WRITE_DAC,
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WRITE_OWNER,
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)
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from pythoncom import IID_NULL
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from win32com.authorization import authorization
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from win32com.shell.shellcon import ( # # Msg parameter to PropertySheetPageCallback
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PSPCB_CREATE,
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PSPCB_RELEASE,
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)
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from win32security import CONTAINER_INHERIT_ACE, INHERIT_ONLY_ACE, OBJECT_INHERIT_ACE
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class SecurityInformation(win32com.server.policy.DesignatedWrapPolicy):
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_com_interfaces_ = [authorization.IID_ISecurityInformation]
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_public_methods_ = [
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"GetObjectInformation",
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"GetSecurity",
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"SetSecurity",
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"GetAccessRights",
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"GetInheritTypes",
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"MapGeneric",
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"PropertySheetPageCallback",
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]
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def __init__(self, FileName):
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self.FileName = FileName
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self._wrap_(self)
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def GetObjectInformation(self):
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"""Identifies object whose security will be modified, and determines options available
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to the end user"""
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flags = SI_ADVANCED | SI_EDIT_ALL | SI_PAGE_TITLE | SI_RESET
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if os.path.isdir(self.FileName):
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flags |= SI_CONTAINER
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hinstance = 0 ## handle to module containing string resources
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servername = "" ## name of authenticating server if not local machine
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objectname = os.path.split(self.FileName)[1]
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pagetitle = "Python ACL Editor"
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if os.path.isdir(self.FileName):
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pagetitle += " (dir)"
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else:
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pagetitle += " (file)"
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objecttype = IID_NULL
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return flags, hinstance, servername, objectname, pagetitle, objecttype
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def GetSecurity(self, requestedinfo, bdefault):
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"""Requests the existing permissions for object"""
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if bdefault:
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## This is invoked if the 'Default' button is pressed (only present if SI_RESET is passed
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## with the flags in GetObjectInfo). Passing an empty SD with a NULL Dacl
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## should cause inherited ACL from parent dir or default dacl from user's token to be used
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return win32security.SECURITY_DESCRIPTOR()
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else:
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## GetFileSecurity sometimes fails to return flags indicating that an ACE is inherited
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return win32security.GetNamedSecurityInfo(
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self.FileName, win32security.SE_FILE_OBJECT, requestedinfo
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)
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def SetSecurity(self, requestedinfo, sd):
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"""Applies permissions to the object"""
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owner = sd.GetSecurityDescriptorOwner()
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group = sd.GetSecurityDescriptorGroup()
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dacl = sd.GetSecurityDescriptorDacl()
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sacl = sd.GetSecurityDescriptorSacl()
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win32security.SetNamedSecurityInfo(
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self.FileName,
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win32security.SE_FILE_OBJECT,
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requestedinfo,
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owner,
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group,
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dacl,
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sacl,
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)
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## should also handle recursive operations here
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def GetAccessRights(self, objecttype, flags):
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"""Returns a tuple of (AccessRights, DefaultAccess), where AccessRights is a sequence of tuples representing
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SI_ACCESS structs, containing (guid, access mask, Name, flags). DefaultAccess indicates which of the
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AccessRights will be used initially when a new ACE is added (zero based).
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Flags can contain SI_ACCESS_SPECIFIC,SI_ACCESS_GENERAL,SI_ACCESS_CONTAINER,SI_ACCESS_PROPERTY,
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CONTAINER_INHERIT_ACE,INHERIT_ONLY_ACE,OBJECT_INHERIT_ACE
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"""
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## input flags: SI_ADVANCED,SI_EDIT_AUDITS,SI_EDIT_PROPERTIES indicating which property sheet is requesting the rights
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if (objecttype is not None) and (objecttype != IID_NULL):
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## Should not be true for file objects. Usually only used with DS objects that support security for
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## their properties
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raise NotImplementedError("Object type is not supported")
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if os.path.isdir(self.FileName):
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file_append_data_desc = "Create subfolders"
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file_write_data_desc = "Create Files"
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else:
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file_append_data_desc = "Append data"
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file_write_data_desc = "Write data"
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accessrights = [
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(
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IID_NULL,
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FILE_GENERIC_READ,
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"Generic read",
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SI_ACCESS_GENERAL
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| SI_ACCESS_SPECIFIC
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| OBJECT_INHERIT_ACE
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| CONTAINER_INHERIT_ACE,
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),
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(
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IID_NULL,
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FILE_GENERIC_WRITE,
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"Generic write",
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SI_ACCESS_GENERAL
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| SI_ACCESS_SPECIFIC
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| OBJECT_INHERIT_ACE
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| CONTAINER_INHERIT_ACE,
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),
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(
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IID_NULL,
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win32con.DELETE,
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"Delete",
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SI_ACCESS_SPECIFIC | OBJECT_INHERIT_ACE | CONTAINER_INHERIT_ACE,
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),
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(
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IID_NULL,
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WRITE_OWNER,
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"Change owner",
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SI_ACCESS_SPECIFIC | OBJECT_INHERIT_ACE | CONTAINER_INHERIT_ACE,
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),
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(
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IID_NULL,
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READ_CONTROL,
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"Read Permissions",
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SI_ACCESS_SPECIFIC | OBJECT_INHERIT_ACE | CONTAINER_INHERIT_ACE,
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),
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(
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IID_NULL,
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WRITE_DAC,
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"Change permissions",
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SI_ACCESS_SPECIFIC | OBJECT_INHERIT_ACE | CONTAINER_INHERIT_ACE,
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),
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(
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IID_NULL,
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FILE_APPEND_DATA,
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file_append_data_desc,
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SI_ACCESS_SPECIFIC | OBJECT_INHERIT_ACE | CONTAINER_INHERIT_ACE,
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),
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(
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IID_NULL,
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FILE_WRITE_DATA,
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file_write_data_desc,
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SI_ACCESS_SPECIFIC | OBJECT_INHERIT_ACE | CONTAINER_INHERIT_ACE,
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),
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]
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return (accessrights, 0)
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def MapGeneric(self, guid, aceflags, mask):
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"""Converts generic access rights to specific rights. This implementation uses standard file system rights,
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but you can map them any way that suits your application.
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"""
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return win32security.MapGenericMask(
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mask,
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(
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FILE_GENERIC_READ,
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FILE_GENERIC_WRITE,
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FILE_GENERIC_EXECUTE,
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FILE_ALL_ACCESS,
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),
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)
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def GetInheritTypes(self):
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"""Specifies which types of ACE inheritance are supported.
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Returns a sequence of tuples representing SI_INHERIT_TYPE structs, containing
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(object type guid, inheritance flags, display name). Guid is usually only used with
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Directory Service objects.
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"""
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return (
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(IID_NULL, 0, "Only current object"),
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(IID_NULL, OBJECT_INHERIT_ACE, "Files inherit permissions"),
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(IID_NULL, CONTAINER_INHERIT_ACE, "Sub Folders inherit permissions"),
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(
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IID_NULL,
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CONTAINER_INHERIT_ACE | OBJECT_INHERIT_ACE,
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"Files and subfolders",
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),
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)
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def PropertySheetPageCallback(self, hwnd, msg, pagetype):
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"""Invoked each time a property sheet page is created or destroyed."""
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## page types from SI_PAGE_TYPE enum: SI_PAGE_PERM SI_PAGE_ADVPERM SI_PAGE_AUDIT SI_PAGE_OWNER
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## msg: PSPCB_CREATE, PSPCB_RELEASE, PSPCB_SI_INITDIALOG
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return None
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def EditSecurity(self, owner_hwnd=0):
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"""Creates an ACL editor dialog based on parameters returned by interface methods"""
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isi = pythoncom.WrapObject(
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self, authorization.IID_ISecurityInformation, pythoncom.IID_IUnknown
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)
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authorization.EditSecurity(owner_hwnd, isi)
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## folder permissions
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temp_dir = win32api.GetTempPath()
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dir_name = win32api.GetTempFileName(temp_dir, "isi")[0]
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print(dir_name)
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os.remove(dir_name)
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os.mkdir(dir_name)
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si = SecurityInformation(dir_name)
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si.EditSecurity()
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## file permissions
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fname = win32api.GetTempFileName(dir_name, "isi")[0]
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si = SecurityInformation(fname)
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si.EditSecurity()
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