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