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@Phillip-C
Last active Oct 25, 2018
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An extension to emulate some of the PyHook library on linux
#!/usr/bin/python
#
# pyxhook -- an extension to emulate some of the PyHook library on linux.
#
# Copyright (C) 2008 Tim Alexander <dragonfyre13@gmail.com>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
# Thanks to Alex Badea <vamposdecampos@gmail.com> for writing the Record
# demo for the xlib libraries. It helped me immensely working with these
# in this library.
#
# Thanks to the python-xlib team. This wouldn't have been possible without
# your code.
#
# This requires:
# at least python-xlib 1.4
# xwindows must have the "record" extension present, and active.
#
# This file has now been somewhat extensively modified by
# Daniel Folkinshteyn <nanotube@users.sf.net>
# So if there are any bugs, they are probably my fault. :)
from __future__ import print_function
import sys
import re
import time
import threading
from Xlib import X, XK, display
from Xlib.ext import record
from Xlib.protocol import rq
#######################################################################
# #######################START CLASS DEF###############################
#######################################################################
class HookManager(threading.Thread):
""" This is the main class. Instantiate it, and you can hand it KeyDown
and KeyUp (functions in your own code) which execute to parse the
pyxhookkeyevent class that is returned.
This simply takes these two values for now:
KeyDown : The function to execute when a key is pressed, if it
returns anything. It hands the function an argument that
is the pyxhookkeyevent class.
KeyUp : The function to execute when a key is released, if it
returns anything. It hands the function an argument that is
the pyxhookkeyevent class.
"""
def __init__(self,parameters=False):
threading.Thread.__init__(self)
self.finished = threading.Event()
# Give these some initial values
self.mouse_position_x = 0
self.mouse_position_y = 0
self.ison = {"shift": False, "caps": False}
# Compile our regex statements.
self.isshift = re.compile('^Shift')
self.iscaps = re.compile('^Caps_Lock')
self.shiftablechar = re.compile('|'.join((
'^[a-z0-9]$',
'^minus$',
'^equal$',
'^bracketleft$',
'^bracketright$',
'^semicolon$',
'^backslash$',
'^apostrophe$',
'^comma$',
'^period$',
'^slash$',
'^grave$'
)))
self.logrelease = re.compile('.*')
self.isspace = re.compile('^space$')
# Choose which type of function use
self.parameters=parameters
if parameters:
self.lambda_function=lambda x,y: True
else:
self.lambda_function=lambda x: True
# Assign default function actions (do nothing).
self.KeyDown = self.lambda_function
self.KeyUp = self.lambda_function
self.MouseAllButtonsDown = self.lambda_function
self.MouseAllButtonsUp = self.lambda_function
self.MouseMovement = self.lambda_function
self.KeyDownParameters = {}
self.KeyUpParameters = {}
self.MouseAllButtonsDownParameters = {}
self.MouseAllButtonsUpParameters= {}
self.MouseMovementParameters = {}
self.contextEventMask = [X.KeyPress, X.MotionNotify]
# Hook to our display.
self.local_dpy = display.Display()
self.record_dpy = display.Display()
def run(self):
# Check if the extension is present
if not self.record_dpy.has_extension("RECORD"):
print("RECORD extension not found", file=sys.stderr)
sys.exit(1)
# r = self.record_dpy.record_get_version(0, 0)
# print("RECORD extension version {major}.{minor}".format(
# major=r.major_version,
# minor=r.minor_version
# ))
# Create a recording context; we only want key and mouse events
self.ctx = self.record_dpy.record_create_context(
0,
[record.AllClients],
[{
'core_requests': (0, 0),
'core_replies': (0, 0),
'ext_requests': (0, 0, 0, 0),
'ext_replies': (0, 0, 0, 0),
'delivered_events': (0, 0),
# (X.KeyPress, X.ButtonPress),
'device_events': tuple(self.contextEventMask),
'errors': (0, 0),
'client_started': False,
'client_died': False,
}])
# Enable the context; this only returns after a call to
# record_disable_context, while calling the callback function in the
# meantime
self.record_dpy.record_enable_context(self.ctx, self.processevents)
# Finally free the context
self.record_dpy.record_free_context(self.ctx)
def cancel(self):
self.finished.set()
self.local_dpy.record_disable_context(self.ctx)
self.local_dpy.flush()
def printevent(self, event):
print(event)
def HookKeyboard(self):
# We don't need to do anything here anymore, since the default mask
# is now set to contain X.KeyPress
# self.contextEventMask[0] = X.KeyPress
pass
def HookMouse(self):
# We don't need to do anything here anymore, since the default mask
# is now set to contain X.MotionNotify
# need mouse motion to track pointer position, since ButtonPress
# events don't carry that info.
# self.contextEventMask[1] = X.MotionNotify
pass
def processhookevents(self,action_type,action_parameters,events):
# In order to avoid duplicate code, i wrote a function that takes the
# input value of the action function and, depending on the initialization,
# launches it or only with the event or passes the parameter
if self.parameters:
action_type(events,action_parameters)
else:
action_type(events)
def processevents(self, reply):
if reply.category != record.FromServer:
return
if reply.client_swapped:
print("* received swapped protocol data, cowardly ignored")
return
try:
# Get int value, python2.
intval = ord(reply.data[0])
except TypeError:
# Already bytes/ints, python3.
intval = reply.data[0]
if (not reply.data) or (intval < 2):
# not an event
return
data = reply.data
while len(data):
event, data = rq.EventField(None).parse_binary_value(
data,
self.record_dpy.display,
None,
None
)
if event.type == X.KeyPress:
hookevent = self.keypressevent(event)
self.processhookevents(self.KeyDown,self.KeyDownParameters,hookevent)
elif event.type == X.KeyRelease:
hookevent = self.keyreleaseevent(event)
self.processhookevents(self.KeyUp,self.KeyUpParameters,hookevent)
elif event.type == X.ButtonPress:
hookevent = self.buttonpressevent(event)
self.processhookevents(self.MouseAllButtonsDown,self.MouseAllButtonsDownParameters,hookevent)
elif event.type == X.ButtonRelease:
hookevent = self.buttonreleaseevent(event)
self.processhookevents(self.MouseAllButtonsUp,self.MouseAllButtonsUpParameters,hookevent)
elif event.type == X.MotionNotify:
# use mouse moves to record mouse position, since press and
# release events do not give mouse position info
# (event.root_x and event.root_y have bogus info).
hookevent = self.mousemoveevent(event)
self.processhookevents(self.MouseMovement,self.MouseMovementParameters,hookevent)
# print("processing events...", event.type)
def keypressevent(self, event):
matchto = self.lookup_keysym(
self.local_dpy.keycode_to_keysym(event.detail, 0)
)
if self.shiftablechar.match(
self.lookup_keysym(
self.local_dpy.keycode_to_keysym(event.detail, 0))):
# This is a character that can be typed.
if not self.ison["shift"]:
keysym = self.local_dpy.keycode_to_keysym(event.detail, 0)
return self.makekeyhookevent(keysym, event)
else:
keysym = self.local_dpy.keycode_to_keysym(event.detail, 1)
return self.makekeyhookevent(keysym, event)
else:
# Not a typable character.
keysym = self.local_dpy.keycode_to_keysym(event.detail, 0)
if self.isshift.match(matchto):
self.ison["shift"] = self.ison["shift"] + 1
elif self.iscaps.match(matchto):
if not self.ison["caps"]:
self.ison["shift"] = self.ison["shift"] + 1
self.ison["caps"] = True
if self.ison["caps"]:
self.ison["shift"] = self.ison["shift"] - 1
self.ison["caps"] = False
return self.makekeyhookevent(keysym, event)
def keyreleaseevent(self, event):
if self.shiftablechar.match(
self.lookup_keysym(
self.local_dpy.keycode_to_keysym(event.detail, 0))):
if not self.ison["shift"]:
keysym = self.local_dpy.keycode_to_keysym(event.detail, 0)
else:
keysym = self.local_dpy.keycode_to_keysym(event.detail, 1)
else:
keysym = self.local_dpy.keycode_to_keysym(event.detail, 0)
matchto = self.lookup_keysym(keysym)
if self.isshift.match(matchto):
self.ison["shift"] = self.ison["shift"] - 1
return self.makekeyhookevent(keysym, event)
def buttonpressevent(self, event):
# self.clickx = self.rootx
# self.clicky = self.rooty
return self.makemousehookevent(event)
def buttonreleaseevent(self, event):
# if (self.clickx == self.rootx) and (self.clicky == self.rooty):
# # print("ButtonClock {detail} x={s.rootx y={s.rooty}}".format(
# # detail=event.detail,
# # s=self,
# # ))
# if event.detail in (1, 2, 3):
# self.captureclick()
# else:
# pass
# print("ButtonDown {detail} x={s.clickx} y={s.clicky}".format(
# detail=event.detail,
# s=self
# ))
# print("ButtonUp {detail} x={s.rootx} y={s.rooty}".format(
# detail=event.detail,
# s=self
# ))
return self.makemousehookevent(event)
def mousemoveevent(self, event):
self.mouse_position_x = event.root_x
self.mouse_position_y = event.root_y
return self.makemousehookevent(event)
# need the following because XK.keysym_to_string() only does printable
# chars rather than being the correct inverse of XK.string_to_keysym()
def lookup_keysym(self, keysym):
for name in dir(XK):
if name.startswith("XK_") and getattr(XK, name) == keysym:
return name.lstrip("XK_")
return "[{}]".format(keysym)
def asciivalue(self, keysym):
asciinum = XK.string_to_keysym(self.lookup_keysym(keysym))
return asciinum % 256
def makekeyhookevent(self, keysym, event):
storewm = self.xwindowinfo()
if event.type == X.KeyPress:
MessageName = "key down"
elif event.type == X.KeyRelease:
MessageName = "key up"
return pyxhookkeyevent(
storewm["handle"],
storewm["name"],
storewm["class"],
self.lookup_keysym(keysym),
self.asciivalue(keysym),
False,
event.detail,
MessageName
)
def makemousehookevent(self, event):
storewm = self.xwindowinfo()
if event.detail == 1:
MessageName = "mouse left "
elif event.detail == 3:
MessageName = "mouse right "
elif event.detail == 2:
MessageName = "mouse middle "
elif event.detail == 5:
MessageName = "mouse wheel down "
elif event.detail == 4:
MessageName = "mouse wheel up "
else:
MessageName = "mouse {} ".format(event.detail)
if event.type == X.ButtonPress:
MessageName = "{} down".format(MessageName)
elif event.type == X.ButtonRelease:
MessageName = "{} up".format(MessageName)
else:
MessageName = "mouse moved"
return pyxhookmouseevent(
storewm["handle"],
storewm["name"],
storewm["class"],
(self.mouse_position_x, self.mouse_position_y),
MessageName
)
def xwindowinfo(self):
try:
windowvar = self.local_dpy.get_input_focus().focus
wmname = windowvar.get_wm_name()
wmclass = windowvar.get_wm_class()
wmhandle = str(windowvar)[20:30]
except:
# This is to keep things running smoothly.
# It almost never happens, but still...
return {"name": None, "class": None, "handle": None}
if (wmname is None) and (wmclass is None):
try:
windowvar = windowvar.query_tree().parent
wmname = windowvar.get_wm_name()
wmclass = windowvar.get_wm_class()
wmhandle = str(windowvar)[20:30]
except:
# This is to keep things running smoothly.
# It almost never happens, but still...
return {"name": None, "class": None, "handle": None}
if wmclass is None:
return {"name": wmname, "class": wmclass, "handle": wmhandle}
else:
return {"name": wmname, "class": wmclass[0], "handle": wmhandle}
class pyxhookkeyevent:
""" This is the class that is returned with each key event.f
It simply creates the variables below in the class.
Window : The handle of the window.
WindowName : The name of the window.
WindowProcName : The backend process for the window.
Key : The key pressed, shifted to the correct caps value.
Ascii : An ascii representation of the key. It returns 0 if
the ascii value is not between 31 and 256.
KeyID : This is just False for now. Under windows, it is the
Virtual Key Code, but that's a windows-only thing.
ScanCode : Please don't use this. It differs for pretty much
every type of keyboard. X11 abstracts this
information anyway.
MessageName : "key down", "key up".
"""
def __init__(
self, Window, WindowName, WindowProcName, Key, Ascii, KeyID,
ScanCode, MessageName):
self.Window = Window
self.WindowName = WindowName
self.WindowProcName = WindowProcName
self.Key = Key
self.Ascii = Ascii
self.KeyID = KeyID
self.ScanCode = ScanCode
self.MessageName = MessageName
def __str__(self):
return '\n'.join((
'Window Handle: {s.Window}',
'Window Name: {s.WindowName}',
'Window\'s Process Name: {s.WindowProcName}',
'Key Pressed: {s.Key}',
'Ascii Value: {s.Ascii}',
'KeyID: {s.KeyID}',
'ScanCode: {s.ScanCode}',
'MessageName: {s.MessageName}',
)).format(s=self)
class pyxhookmouseevent:
"""This is the class that is returned with each key event.f
It simply creates the variables below in the class.
Window : The handle of the window.
WindowName : The name of the window.
WindowProcName : The backend process for the window.
Position : 2-tuple (x,y) coordinates of the mouse click.
MessageName : "mouse left|right|middle down",
"mouse left|right|middle up".
"""
def __init__(
self, Window, WindowName, WindowProcName, Position, MessageName):
self.Window = Window
self.WindowName = WindowName
self.WindowProcName = WindowProcName
self.Position = Position
self.MessageName = MessageName
def __str__(self):
return '\n'.join((
'Window Handle: {s.Window}',
'Window\'s Process Name: {s.WindowProcName}',
'Position: {s.Position}',
'MessageName: {s.MessageName}',
)).format(s=self)
#######################################################################
# ########################END CLASS DEF################################
#######################################################################
if __name__ == '__main__':
hm = HookManager()
hm.HookKeyboard()
hm.HookMouse()
hm.KeyDown = hm.printevent
hm.KeyUp = hm.printevent
hm.MouseAllButtonsDown = hm.printevent
hm.MouseAllButtonsUp = hm.printevent
hm.MouseMovement = hm.printevent
hm.start()
time.sleep(10)
hm.cancel()
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