243 lines
8.4 KiB
Python
243 lines
8.4 KiB
Python
"""
|
|
Implements a permissions editor for services.
|
|
Service can be specified as plain name for local machine,
|
|
or as a remote service of the form \\machinename\service
|
|
"""
|
|
|
|
import os
|
|
|
|
import ntsecuritycon
|
|
import pythoncom
|
|
import win32api
|
|
import win32com.server.policy
|
|
import win32con
|
|
import win32security
|
|
import win32service
|
|
from win32com.authorization import authorization
|
|
|
|
SERVICE_GENERIC_EXECUTE = (
|
|
win32service.SERVICE_START
|
|
| win32service.SERVICE_STOP
|
|
| win32service.SERVICE_PAUSE_CONTINUE
|
|
| win32service.SERVICE_USER_DEFINED_CONTROL
|
|
)
|
|
SERVICE_GENERIC_READ = (
|
|
win32service.SERVICE_QUERY_CONFIG
|
|
| win32service.SERVICE_QUERY_STATUS
|
|
| win32service.SERVICE_INTERROGATE
|
|
| win32service.SERVICE_ENUMERATE_DEPENDENTS
|
|
)
|
|
SERVICE_GENERIC_WRITE = win32service.SERVICE_CHANGE_CONFIG
|
|
|
|
from ntsecuritycon import (
|
|
CONTAINER_INHERIT_ACE,
|
|
INHERIT_ONLY_ACE,
|
|
OBJECT_INHERIT_ACE,
|
|
PSPCB_SI_INITDIALOG,
|
|
READ_CONTROL,
|
|
SI_ACCESS_CONTAINER,
|
|
SI_ACCESS_GENERAL,
|
|
SI_ACCESS_PROPERTY,
|
|
SI_ACCESS_SPECIFIC,
|
|
SI_ADVANCED,
|
|
SI_CONTAINER,
|
|
SI_EDIT_ALL,
|
|
SI_EDIT_AUDITS,
|
|
SI_EDIT_PROPERTIES,
|
|
SI_PAGE_ADVPERM,
|
|
SI_PAGE_AUDIT,
|
|
SI_PAGE_OWNER,
|
|
SI_PAGE_PERM,
|
|
SI_PAGE_TITLE,
|
|
SI_RESET,
|
|
STANDARD_RIGHTS_EXECUTE,
|
|
STANDARD_RIGHTS_READ,
|
|
STANDARD_RIGHTS_WRITE,
|
|
WRITE_DAC,
|
|
WRITE_OWNER,
|
|
)
|
|
from pythoncom import IID_NULL
|
|
from win32com.shell.shellcon import ( # # Msg parameter to PropertySheetPageCallback
|
|
PSPCB_CREATE,
|
|
PSPCB_RELEASE,
|
|
)
|
|
from win32security import CONTAINER_INHERIT_ACE, INHERIT_ONLY_ACE, OBJECT_INHERIT_ACE
|
|
|
|
|
|
class ServiceSecurity(win32com.server.policy.DesignatedWrapPolicy):
|
|
_com_interfaces_ = [authorization.IID_ISecurityInformation]
|
|
_public_methods_ = [
|
|
"GetObjectInformation",
|
|
"GetSecurity",
|
|
"SetSecurity",
|
|
"GetAccessRights",
|
|
"GetInheritTypes",
|
|
"MapGeneric",
|
|
"PropertySheetPageCallback",
|
|
]
|
|
|
|
def __init__(self, ServiceName):
|
|
self.ServiceName = ServiceName
|
|
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
|
|
hinstance = 0 ## handle to module containing string resources
|
|
servername = "" ## name of authenticating server if not local machine
|
|
|
|
## service name can contain remote machine name of the form \\Server\ServiceName
|
|
objectname = os.path.split(self.ServiceName)[1]
|
|
pagetitle = "Service Permissions for " + self.ServiceName
|
|
objecttype = IID_NULL
|
|
return flags, hinstance, servername, objectname, pagetitle, objecttype
|
|
|
|
def GetSecurity(self, requestedinfo, bdefault):
|
|
"""Requests the existing permissions for object"""
|
|
if bdefault:
|
|
return win32security.SECURITY_DESCRIPTOR()
|
|
else:
|
|
return win32security.GetNamedSecurityInfo(
|
|
self.ServiceName, win32security.SE_SERVICE, 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.ServiceName,
|
|
win32security.SE_SERVICE,
|
|
requestedinfo,
|
|
owner,
|
|
group,
|
|
dacl,
|
|
sacl,
|
|
)
|
|
|
|
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):
|
|
## Not relevent for services
|
|
raise NotImplementedError("Object type is not supported")
|
|
|
|
## ???? for some reason, the DACL for a service will not retain ACCESS_SYSTEM_SECURITY in an ACE ????
|
|
## (IID_NULL, win32con.ACCESS_SYSTEM_SECURITY, 'View/change audit settings', SI_ACCESS_SPECIFIC),
|
|
|
|
accessrights = [
|
|
(
|
|
IID_NULL,
|
|
win32service.SERVICE_ALL_ACCESS,
|
|
"Full control",
|
|
SI_ACCESS_GENERAL,
|
|
),
|
|
(IID_NULL, SERVICE_GENERIC_READ, "Generic read", SI_ACCESS_GENERAL),
|
|
(IID_NULL, SERVICE_GENERIC_WRITE, "Generic write", SI_ACCESS_GENERAL),
|
|
(
|
|
IID_NULL,
|
|
SERVICE_GENERIC_EXECUTE,
|
|
"Start/Stop/Pause service",
|
|
SI_ACCESS_GENERAL,
|
|
),
|
|
(IID_NULL, READ_CONTROL, "Read Permissions", SI_ACCESS_GENERAL),
|
|
(IID_NULL, WRITE_DAC, "Change permissions", SI_ACCESS_GENERAL),
|
|
(IID_NULL, WRITE_OWNER, "Change owner", SI_ACCESS_GENERAL),
|
|
(IID_NULL, win32con.DELETE, "Delete service", SI_ACCESS_GENERAL),
|
|
(IID_NULL, win32service.SERVICE_START, "Start service", SI_ACCESS_SPECIFIC),
|
|
(IID_NULL, win32service.SERVICE_STOP, "Stop service", SI_ACCESS_SPECIFIC),
|
|
(
|
|
IID_NULL,
|
|
win32service.SERVICE_PAUSE_CONTINUE,
|
|
"Pause/unpause service",
|
|
SI_ACCESS_SPECIFIC,
|
|
),
|
|
(
|
|
IID_NULL,
|
|
win32service.SERVICE_USER_DEFINED_CONTROL,
|
|
"Execute user defined operations",
|
|
SI_ACCESS_SPECIFIC,
|
|
),
|
|
(
|
|
IID_NULL,
|
|
win32service.SERVICE_QUERY_CONFIG,
|
|
"Read configuration",
|
|
SI_ACCESS_SPECIFIC,
|
|
),
|
|
(
|
|
IID_NULL,
|
|
win32service.SERVICE_CHANGE_CONFIG,
|
|
"Change configuration",
|
|
SI_ACCESS_SPECIFIC,
|
|
),
|
|
(
|
|
IID_NULL,
|
|
win32service.SERVICE_ENUMERATE_DEPENDENTS,
|
|
"List dependent services",
|
|
SI_ACCESS_SPECIFIC,
|
|
),
|
|
(
|
|
IID_NULL,
|
|
win32service.SERVICE_QUERY_STATUS,
|
|
"Query status",
|
|
SI_ACCESS_SPECIFIC,
|
|
),
|
|
(
|
|
IID_NULL,
|
|
win32service.SERVICE_INTERROGATE,
|
|
"Query status (immediate)",
|
|
SI_ACCESS_SPECIFIC,
|
|
),
|
|
]
|
|
return (accessrights, 0)
|
|
|
|
def MapGeneric(self, guid, aceflags, mask):
|
|
"""Converts generic access rights to specific rights."""
|
|
return win32security.MapGenericMask(
|
|
mask,
|
|
(
|
|
SERVICE_GENERIC_READ,
|
|
SERVICE_GENERIC_WRITE,
|
|
SERVICE_GENERIC_EXECUTE,
|
|
win32service.SERVICE_ALL_ACCESS,
|
|
),
|
|
)
|
|
|
|
def GetInheritTypes(self):
|
|
"""Specifies which types of ACE inheritance are supported.
|
|
Services don't use any inheritance
|
|
"""
|
|
return ((IID_NULL, 0, "Only current object"),)
|
|
|
|
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)
|
|
|
|
|
|
if __name__ == "__main__":
|
|
# Find the first service on local machine and edit its permissions
|
|
scm = win32service.OpenSCManager(
|
|
None, None, win32service.SC_MANAGER_ENUMERATE_SERVICE
|
|
)
|
|
svcs = win32service.EnumServicesStatus(scm)
|
|
win32service.CloseServiceHandle(scm)
|
|
si = ServiceSecurity(svcs[0][0])
|
|
si.EditSecurity()
|