我在我的一个项目中遇到了一些问题。我正在尝试在 python 中编写一种可在 OS X 10.8 (Mountain Lion) 上运行的键盘记录器。但是当我尝试在后台/作为进程/守护进程中启动我的脚本时出现此错误。
错误 ：
The process has forked and you cannot use this CoreFoundation functionality safely. You MUST exec().
Break on __THE_PROCESS_HAS_FORKED_AND_YOU_CANNOT_USE_THIS_COREFOUNDATION_FUNCTIONALITY___YOU_MUST_EXEC__() to debug.
The process has forked and you cannot use this CoreFoundation functionality safely. You MUST exec().
Break on __THE_PROCESS_HAS_FORKED_AND_YOU_CANNOT_USE_THIS_COREFOUNDATION_FUNCTIONALITY___YOU_MUST_EXEC__() to debug.
The process has forked and you cannot use this CoreFoundation functionality safely. You MUST exec().
Break on __THE_PROCESS_HAS_FORKED_AND_YOU_CANNOT_USE_THIS_COREFOUNDATION_FUNCTIONALITY___YOU_MUST_EXEC__() to debug.
The process has forked and you cannot use this CoreFoundation functionality safely. You MUST exec().
Break on __THE_PROCESS_HAS_FORKED_AND_YOU_CANNOT_USE_THIS_COREFOUNDATION_FUNCTIONALITY___YOU_MUST_EXEC__() to debug.
The process has forked and you cannot use this CoreFoundation functionality safely. You MUST exec().
Break on __THE_PROCESS_HAS_FORKED_AND_YOU_CANNOT_USE_THIS_COREFOUNDATION_FUNCTIONALITY___YOU_MUST_EXEC__() to debug.
剧本
#!/usr/bin/env python
# -*- coding: UTF-8 -*-
from Daemon import Daemon
import sys
import os
import exceptions
import sys
from Foundation import NSObject, NSLog
from AppKit import NSApplication, NSApp, NSWorkspace
from Cocoa import *
from Quartz import CGWindowListCopyWindowInfo, kCGWindowListOptionOnScreenOnly, kCGNullWindowID
from PyObjCTools import AppHelper
import keycode
import exceptions
import sys
from Foundation import NSObject, NSLog
from AppKit import NSApplication, NSApp, NSWorkspace
from Cocoa import *
from Quartz import CGWindowListCopyWindowInfo, kCGWindowListOptionOnScreenOnly, kCGNullWindowID
from PyObjCTools import AppHelper
import keycode
evtypes = dict(
NSLeftMouseDown = 1,
NSLeftMouseUp = 2,
NSRightMouseDown = 3,
NSRightMouseUp = 4,
NSMouseMoved = 5,
NSLeftMouseDragged = 6,
NSRightMouseDragged = 7,
NSMouseEntered = 8,
NSMouseExited = 9,
NSKeyDown = 10,
NSKeyUp = 11,
NSFlagsChanged = 12,
NSAppKitDefined = 13,
NSSystemDefined = 14,
NSApplicationDefined = 15,
NSPeriodic = 16,
NSCursorUpdate = 17,
NSScrollWheel = 22,
NSTabletPoint = 23,
NSTabletProximity = 24,
NSOtherMouseDown = 25,
NSOtherMouseUp = 26,
NSOtherMouseDragged = 27
)
evtypes_rev = dict([[v,k] for k,v in evtypes.items()])
class Hooker(object):
def __call__(self, *args, **kwargs):
try:
evt = kwargs.get('event')
del kwargs['event']
items = ' '.join( [ x[0]+"="+unicode(x[1]) for x in kwargs.iteritems()] )
print "%20s | %22s | %s" % ( self.__class__.__name__, evtypes_rev[evt.type()], items)
os.path.join(os.path.expanduser("~"), "Desktop")
fichier = open("MY_TEXT_FILE.txt", "a")
fichier.write("%20s | %22s | %s" % ( self.__class__.__name__, evtypes_rev[evt.type()], items))
fichier.close()
except Exception as e:
print 'Horrific error!', e
AppHelper.stopEventLoop()
sys.exit(0)
class KeyHooker(Hooker): pass
class MouseButtonHooker(Hooker): pass
class MouseMoveHooker(Hooker): pass
class ScreenHooker(Hooker): pass
class SniffCocoa:
def __init__(self):
self.key_hook = KeyHooker()
self.mouse_button_hook = MouseButtonHooker()
self.mouse_move_hook = MouseMoveHooker()
self.screen_hook = ScreenHooker()
self.currentApp = None
def createAppDelegate (self) :
sc = self
class AppDelegate(NSObject):
def applicationDidFinishLaunching_(self, notification):
mask = (
NSKeyDownMask
| NSKeyUpMask
| NSLeftMouseDownMask
| NSLeftMouseUpMask
| NSRightMouseDownMask
| NSRightMouseUpMask
| NSMouseMovedMask
| NSScrollWheelMask
)
NSEvent.addGlobalMonitorForEventsMatchingMask_handler_(mask, sc.handler)
return AppDelegate
def run(self):
NSApplication.sharedApplication()
delegate = self.createAppDelegate().alloc().init()
NSApp().setDelegate_(delegate)
self.workspace = NSWorkspace.sharedWorkspace()
AppHelper.runEventLoop()
def cancel(self):
AppHelper.stopEventLoop()
def handler(self, event):
try:
activeApps = self.workspace.runningApplications()
for app in activeApps:
if app.isActive():
if app.localizedName() != self.currentApp:
self.currentApp = app.localizedName()
options = kCGWindowListOptionOnScreenOnly
windowList = CGWindowListCopyWindowInfo(options, kCGNullWindowID)
for window in windowList:
if window['kCGWindowOwnerName'] == self.currentApp:
geom = window['kCGWindowBounds']
self.screen_hook( event=event,
name = window['kCGWindowName'],
owner = window['kCGWindowOwnerName'],
x = geom['X'],
y = geom['Y'],
w = geom['Width'],
h = geom['Height'])
break
break
loc = NSEvent.mouseLocation()
# mouse clicky buttons
if event.type() in ( NSLeftMouseDown, NSRightMouseDown, NSLeftMouseUp, NSRightMouseUp):
self.mouse_button_hook(event=event, x=loc.x, y=loc.y)
# mouse scrolly buttons
elif event.type() == NSScrollWheel:
if event.deltaY() > 0 and event.deltaY() < 0:
self.mouse_button_hook(event=event, x=loc.x, y=loc.y)
if event.deltaX() > 0 and event.deltaX() < 0:
self.mouse_button_hook(event=event, x=loc.x, y=loc.y)
# keys down
elif event.type() in ( NSKeyDown, NSKeyUp ):
flags = event.modifierFlags()
modifiers = [] # OS X api doesn't care it if is left or right
if (flags & NSControlKeyMask):
modifiers.append('CONTROL')
if (flags & NSAlternateKeyMask):
modifiers.append('ALTERNATE')
if (flags & NSCommandKeyMask):
modifiers.append('COMMAND')
self.key_hook(event=event, key=event.keyCode(), char=keycode.tostring( event.keyCode() ), mods=modifiers, is_repeat=event.isARepeat())
# Mouse moved
elif event.type() == NSMouseMoved:
self.mouse_move_hook(event=event, x=loc.x, y=loc.y)
else:
pass
except ( KeyboardInterrupt ) as e:
print 'handler', e
AppHelper.stopEventLoop()
class pantalaimon(Daemon):
def run(self):
x = 0
while True:
sc = SniffCocoa()
sc.run()
if __name__ == "__main__":
daemon = pantalaimon('daemon-example.pid')
if len(sys.argv) == 2:
if 'start' == sys.argv[1]:
daemon.start()
elif 'stop' == sys.argv[1]:
daemon.stop()
elif 'restart' == sys.argv[1]:
daemon.restart()
else:
print "Unknown command"
sys.exit(2)
sys.exit(0)
else:
print "usage: %s start||stop||restart" % sys.argv[0]
sys.exit(2)
我们导入的守护进程类：
#!/usr/bin/env python
# -*- coding: UTF-8 -*-
'''
***
Modified generic daemon class
***
Author: http://www.jejik.com/articles/2007/02/a_simple_unix_linux_daemon_in_python/
www.boxedice.com
License: http://creativecommons.org/licenses/by-sa/3.0/
Changes: 23rd Jan 2009 (David Mytton <david@boxedice.com>)
- Replaced hard coded '/dev/null in __init__ with os.devnull
- Added OS check to conditionally remove code that doesn't work on OS X
- Added output to console on completion
- Tidied up formatting
11th Mar 2009 (David Mytton <david@boxedice.com>)
- Fixed problem with daemon exiting on Python 2.4 (before SystemExit was part of the Exception base)
13th Aug 2010 (David Mytton <david@boxedice.com>
- Fixed unhandled exception if PID file is empty
'''
# Core modules
import atexit
import os
import sys
import time
import signal
class Daemon(object):
"""
A generic daemon class.
Usage: subclass the Daemon class and override the run() method
"""
def __init__(self, pidfile, stdin=os.devnull, stdout=os.devnull, stderr=os.devnull, home_dir='.', umask=022, verbose=1):
self.stdin = stdin
self.stdout = stdout
self.stderr = stderr
self.pidfile = pidfile
self.home_dir = home_dir
self.verbose = verbose
self.umask = umask
self.daemon_alive = True
def daemonize(self):
"""
Do the UNIX double-fork magic, see Stevens' "Advanced
Programming in the UNIX Environment" for details (ISBN 0201563177)
http://www.erlenstar.demon.co.uk/unix/faq_2.html#SEC16
"""
try:
pid = os.fork()
if pid > 0:
# Exit first parent
sys.exit(0)
except OSError, e:
sys.stderr.write("fork #1 failed: %d (%s)\n" % (e.errno, e.strerror))
sys.exit(1)
# Decouple from parent environment
os.chdir(self.home_dir)
os.setsid()
os.umask(self.umask)
# Do second fork
try:
pid = os.fork()
if pid > 0:
# Exit from second parent
sys.exit(0)
except OSError, e:
sys.stderr.write("fork #2 failed: %d (%s)\n" % (e.errno, e.strerror))
sys.exit(1)
if sys.platform != 'darwin': # This block breaks on OS X
# Redirect standard file descriptors
sys.stdout.flush()
sys.stderr.flush()
si = file(self.stdin, 'r')
so = file(self.stdout, 'a+')
if self.stderr:
se = file(self.stderr, 'a+', 0)
else:
se = so
os.dup2(si.fileno(), sys.stdin.fileno())
os.dup2(so.fileno(), sys.stdout.fileno())
os.dup2(se.fileno(), sys.stderr.fileno())
def sigtermhandler(signum, frame):
self.daemon_alive = False
signal.signal(signal.SIGTERM, sigtermhandler)
signal.signal(signal.SIGINT, sigtermhandler)
if self.verbose >= 1:
print "Started"
# Write pidfile
atexit.register(self.delpid) # Make sure pid file is removed if we quit
pid = str(os.getpid())
file(self.pidfile,'w+').write("%s\n" % pid)
def delpid(self):
os.remove(self.pidfile)
def start(self, *args, **kwargs):
"""
Start the daemon
"""
if self.verbose >= 1:
print "Starting..."
# Check for a pidfile to see if the daemon already runs
try:
pf = file(self.pidfile,'r')
pid = int(pf.read().strip())
pf.close()
except IOError:
pid = None
except SystemExit:
pid = None
if pid:
message = "pidfile %s already exists. Is it already running?\n"
sys.stderr.write(message % self.pidfile)
sys.exit(1)
# Start the daemon
self.daemonize()
self.run(*args, **kwargs)
def stop(self):
"""
Stop the daemon
"""
if self.verbose >= 1:
print "Stopping..."
# Get the pid from the pidfile
try:
pf = file(self.pidfile,'r')
pid = int(pf.read().strip())
pf.close()
except IOError:
pid = None
except ValueError:
pid = None
if not pid:
message = "pidfile %s does not exist. Not running?\n"
sys.stderr.write(message % self.pidfile)
# Just to be sure. A ValueError might occur if the PID file is empty but does actually exist
if os.path.exists(self.pidfile):
os.remove(self.pidfile)
return # Not an error in a restart
# Try killing the daemon process
try:
while 1:
os.kill(pid, signal.SIGTERM)
time.sleep(0.1)
except OSError, err:
err = str(err)
if err.find("No such process") > 0:
if os.path.exists(self.pidfile):
os.remove(self.pidfile)
else:
print str(err)
sys.exit(1)
if self.verbose >= 1:
print "Stopped"
def restart(self):
"""
Restart the daemon
"""
self.stop()
self.start()
def run(self):
"""
You should override this method when you subclass Daemon. It will be called after the process has been
daemonized by start() or restart().
"""
在此先感谢您的帮助 ！