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272 lines (220 loc) · 9.36 KB
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# A module to expose various thread/process/job related structures and
# methods from kernel32.
#
# http://benjamin.smedbergs.us/blog/2006-12-11/killableprocesspy/
#
# The MIT License
#
# Copyright (c) 2006 the Mozilla Foundation <http://www.mozilla.org>
#
# Permission is hereby granted, free of charge, to any person obtaining a
# copy of this software and associated documentation files (the "Software"),
# to deal in the Software without restriction, including without limitation
# the rights to use, copy, modify, merge, publish, distribute, sublicense,
# and/or sell copies of the Software, and to permit persons to whom the
# Software is furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
# DEALINGS IN THE SOFTWARE.
from ctypes import c_void_p, POINTER, sizeof, Structure, windll, WinError, WINFUNCTYPE
from ctypes.wintypes import BOOL, BYTE, DWORD, HANDLE, LPCWSTR, LPWSTR, UINT, WORD
LPVOID = c_void_p
LPBYTE = POINTER(BYTE)
LPDWORD = POINTER(DWORD)
def ErrCheckBool(result, func, args):
"""errcheck function for Windows functions that return a BOOL True
on success"""
if not result:
raise WinError()
return args
# CloseHandle()
CloseHandleProto = WINFUNCTYPE(BOOL, HANDLE)
CloseHandle = CloseHandleProto(("CloseHandle", windll.kernel32))
CloseHandle.errcheck = ErrCheckBool
# AutoHANDLE
class AutoHANDLE(HANDLE):
"""Subclass of HANDLE which will call CloseHandle() on deletion."""
def Close(self):
if self.value:
CloseHandle(self)
self.value = 0
def __del__(self):
self.Close()
def __int__(self):
return self.value
def ErrCheckHandle(result, func, args):
"""errcheck function for Windows functions that return a HANDLE."""
if not result:
raise WinError()
return AutoHANDLE(result)
# PROCESS_INFORMATION structure
class PROCESS_INFORMATION(Structure):
_fields_ = [("hProcess", HANDLE),
("hThread", HANDLE),
("dwProcessID", DWORD),
("dwThreadID", DWORD)]
def __init__(self):
Structure.__init__(self)
self.cb = sizeof(self)
LPPROCESS_INFORMATION = POINTER(PROCESS_INFORMATION)
# STARTUPINFO structure
class STARTUPINFO(Structure):
_fields_ = [("cb", DWORD),
("lpReserved", LPWSTR),
("lpDesktop", LPWSTR),
("lpTitle", LPWSTR),
("dwX", DWORD),
("dwY", DWORD),
("dwXSize", DWORD),
("dwYSize", DWORD),
("dwXCountChars", DWORD),
("dwYCountChars", DWORD),
("dwFillAttribute", DWORD),
("dwFlags", DWORD),
("wShowWindow", WORD),
("cbReserved2", WORD),
("lpReserved2", LPBYTE),
("hStdInput", HANDLE),
("hStdOutput", HANDLE),
("hStdError", HANDLE)
]
LPSTARTUPINFO = POINTER(STARTUPINFO)
STARTF_USESHOWWINDOW = 0x01
STARTF_USESIZE = 0x02
STARTF_USEPOSITION = 0x04
STARTF_USECOUNTCHARS = 0x08
STARTF_USEFILLATTRIBUTE = 0x10
STARTF_RUNFULLSCREEN = 0x20
STARTF_FORCEONFEEDBACK = 0x40
STARTF_FORCEOFFFEEDBACK = 0x80
STARTF_USESTDHANDLES = 0x100
# EnvironmentBlock
class EnvironmentBlock:
"""An object which can be passed as the lpEnv parameter of CreateProcess.
It is initialized with a dictionary."""
def __init__(self, dict):
if not dict:
self._as_parameter_ = None
else:
values = ["%s=%s" % (key, value)
for (key, value) in dict.iteritems()]
values.append("")
self._as_parameter_ = LPCWSTR("\0".join(values))
# CreateProcess()
CreateProcessProto = WINFUNCTYPE(BOOL, # Return type
LPCWSTR, # lpApplicationName
LPWSTR, # lpCommandLine
LPVOID, # lpProcessAttributes
LPVOID, # lpThreadAttributes
BOOL, # bInheritHandles
DWORD, # dwCreationFlags
LPVOID, # lpEnvironment
LPCWSTR, # lpCurrentDirectory
LPSTARTUPINFO, # lpStartupInfo
LPPROCESS_INFORMATION # lpProcessInformation
)
CreateProcessFlags = ((1, "lpApplicationName", None),
(1, "lpCommandLine"),
(1, "lpProcessAttributes", None),
(1, "lpThreadAttributes", None),
(1, "bInheritHandles", True),
(1, "dwCreationFlags", 0),
(1, "lpEnvironment", None),
(1, "lpCurrentDirectory", None),
(1, "lpStartupInfo"),
(2, "lpProcessInformation"))
def ErrCheckCreateProcess(result, func, args):
ErrCheckBool(result, func, args)
# return a tuple (hProcess, hThread, dwProcessID, dwThreadID)
pi = args[9]
return AutoHANDLE(pi.hProcess), AutoHANDLE(pi.hThread), pi.dwProcessID, pi.dwThreadID
CreateProcess = CreateProcessProto(("CreateProcessW", windll.kernel32),
CreateProcessFlags)
CreateProcess.errcheck = ErrCheckCreateProcess
CREATE_BREAKAWAY_FROM_JOB = 0x01000000
CREATE_DEFAULT_ERROR_MODE = 0x04000000
CREATE_NEW_CONSOLE = 0x00000010
CREATE_NEW_PROCESS_GROUP = 0x00000200
CREATE_NO_WINDOW = 0x08000000
CREATE_SUSPENDED = 0x00000004
CREATE_UNICODE_ENVIRONMENT = 0x00000400
DEBUG_ONLY_THIS_PROCESS = 0x00000002
DEBUG_PROCESS = 0x00000001
DETACHED_PROCESS = 0x00000008
# CreateJobObject()
CreateJobObjectProto = WINFUNCTYPE(HANDLE, # Return type
LPVOID, # lpJobAttributes
LPCWSTR # lpName
)
CreateJobObjectFlags = ((1, "lpJobAttributes", None),
(1, "lpName", None))
CreateJobObject = CreateJobObjectProto(("CreateJobObjectW", windll.kernel32),
CreateJobObjectFlags)
CreateJobObject.errcheck = ErrCheckHandle
# AssignProcessToJobObject()
AssignProcessToJobObjectProto = WINFUNCTYPE(BOOL, # Return type
HANDLE, # hJob
HANDLE # hProcess
)
AssignProcessToJobObjectFlags = ((1, "hJob"),
(1, "hProcess"))
AssignProcessToJobObject = AssignProcessToJobObjectProto(
("AssignProcessToJobObject", windll.kernel32),
AssignProcessToJobObjectFlags)
AssignProcessToJobObject.errcheck = ErrCheckBool
# ResumeThread()
def ErrCheckResumeThread(result, func, args):
if result == -1:
raise WinError()
return args
ResumeThreadProto = WINFUNCTYPE(DWORD, # Return type
HANDLE # hThread
)
ResumeThreadFlags = ((1, "hThread"),)
ResumeThread = ResumeThreadProto(("ResumeThread", windll.kernel32),
ResumeThreadFlags)
ResumeThread.errcheck = ErrCheckResumeThread
# TerminateJobObject()
TerminateJobObjectProto = WINFUNCTYPE(BOOL, # Return type
HANDLE, # hJob
UINT # uExitCode
)
TerminateJobObjectFlags = ((1, "hJob"),
(1, "uExitCode", 127))
TerminateJobObject = TerminateJobObjectProto(
("TerminateJobObject", windll.kernel32),
TerminateJobObjectFlags)
TerminateJobObject.errcheck = ErrCheckBool
# WaitForSingleObject()
WaitForSingleObjectProto = WINFUNCTYPE(DWORD, # Return type
HANDLE, # hHandle
DWORD, # dwMilliseconds
)
WaitForSingleObjectFlags = ((1, "hHandle"),
(1, "dwMilliseconds", -1))
WaitForSingleObject = WaitForSingleObjectProto(
("WaitForSingleObject", windll.kernel32),
WaitForSingleObjectFlags)
INFINITE = -1
WAIT_TIMEOUT = 0x0102
WAIT_OBJECT_0 = 0x0
WAIT_ABANDONED = 0x0080
# GetExitCodeProcess()
GetExitCodeProcessProto = WINFUNCTYPE(BOOL, # Return type
HANDLE, # hProcess
LPDWORD, # lpExitCode
)
GetExitCodeProcessFlags = ((1, "hProcess"),
(2, "lpExitCode"))
GetExitCodeProcess = GetExitCodeProcessProto(
("GetExitCodeProcess", windll.kernel32),
GetExitCodeProcessFlags)
GetExitCodeProcess.errcheck = ErrCheckBool