Allow NVDA to still function if a component changes the current directory

source/COMRegistrationFixes/__init__.py

@@ -8,6 +8,7 @@
 import os
 import subprocess
 import winVersion
+import globalVars
 from logHandler import log
 
 # Particular  64 bit / 32 bit system paths
@@ -53,7 +54,7 @@ def applyRegistryPatch(fileName,wow64=False):
 		log.debug("Applied registry patch: %s with %s"%(fileName,regedit))
 
 
-OLEACC_REG_FILE_PATH = os.path.abspath(os.path.join("COMRegistrationFixes", "oleaccProxy.reg"))
+OLEACC_REG_FILE_PATH = os.path.join(globalVars.appDir, "COMRegistrationFixes", "oleaccProxy.reg")
 def fixCOMRegistrations():
 	"""
 	Registers most common COM proxies, in case they had accidentally been unregistered or overwritten by 3rd party software installs/uninstalls.

source/NVDAHelper.py

@@ -17,6 +17,7 @@
 	WINFUNCTYPE,
 	c_long,
 	c_wchar,
+	windll,
 )
 from ctypes.wintypes import *
 from comtypes import BSTR
@@ -29,11 +30,11 @@
 import time
 import globalVars
 
-versionedLibPath='lib'
+versionedLibPath = os.path.join(globalVars.appDir, 'lib')
 if os.environ.get('PROCESSOR_ARCHITEW6432') == 'ARM64':
-	versionedLib64Path = 'libArm64'
+	versionedLib64Path = os.path.join(globalVars.appDir, 'libArm64')
 else:
-	versionedLib64Path = 'lib64'
+	versionedLib64Path = os.path.join(globalVars.appDir, 'lib64')
 if getattr(sys,'frozen',None):
 	# Not running from source. Libraries are in a version-specific directory
 	versionedLibPath=os.path.join(versionedLibPath,versionInfo.version)
@@ -510,8 +511,15 @@ def initialize():
 	if config.isAppX:
 		log.info("Remote injection disabled due to running as a Windows Store Application")
 		return
-	#Load nvdaHelperRemote.dll but with an altered search path so it can pick up other dlls in lib
-	h=windll.kernel32.LoadLibraryExW(os.path.abspath(os.path.join(versionedLibPath,u"nvdaHelperRemote.dll")),0,0x8)
+	# Load nvdaHelperRemote.dll
+	h = windll.kernel32.LoadLibraryExW(
+		os.path.join(versionedLibPath, "nvdaHelperRemote.dll"),
+		0,
+		# Using an altered search path is necessary here
+		# As NVDAHelperRemote needs to locate dependent dlls in the same directory
+		# such as minhook.dll.
+		winKernel.LOAD_WITH_ALTERED_SEARCH_PATH
+	)
 	if not h:
 		log.critical("Error loading nvdaHelperRemote.dll: %s" % WinError())
 		return

source/NVDAObjects/__init__.py

@@ -8,6 +8,7 @@
 """Module that contains the base NVDA object type with dynamic class creation support,
 as well as the associated TextInfo class."""
 
+import os
 import time
 import re
 import weakref
@@ -31,6 +32,8 @@
 import brailleInput
 import locationHelper
 import aria
+import globalVars
+
 
 class NVDAObjectTextInfo(textInfos.offsets.OffsetsTextInfo):
 	"""A default TextInfo which is used to enable text review of information about widgets that don't support text content.
@@ -1030,7 +1033,7 @@ def _reportErrorInPreviousWord(self):
 			# No error.
 			return
 		import nvwave
-		nvwave.playWaveFile(r"waves\textError.wav")
+		nvwave.playWaveFile(os.path.join(globalVars.appDir, "waves", "textError.wav"))
 
 	def event_liveRegionChange(self):
 		"""

source/NVDAObjects/behaviors.py

@@ -29,6 +29,8 @@
 import ui
 import braille
 import nvwave
+import globalVars
+
 
 class ProgressBar(NVDAObject):
 
@@ -796,15 +798,15 @@ def event_suggestionsOpened(self):
 		# Translators: Announced in braille when suggestions appear when search term is entered in various search fields such as Start search box in Windows 10.
 		braille.handler.message(_("Suggestions"))
 		if config.conf["presentation"]["reportAutoSuggestionsWithSound"]:
-			nvwave.playWaveFile(r"waves\suggestionsOpened.wav")
+			nvwave.playWaveFile(os.path.join(globalVars.appDir, "waves", "suggestionsOpened.wav"))
 
 	def event_suggestionsClosed(self):
 		"""Called when suggestions list or container is closed.
 		Subclasses should provide custom implementations if possible.
 		By default NVDA will announce this via speech, braille or via a sound.
 		"""
 		if config.conf["presentation"]["reportAutoSuggestionsWithSound"]:
-			nvwave.playWaveFile(r"waves\suggestionsClosed.wav")
+			nvwave.playWaveFile(os.path.join(globalVars.appDir, "waves", "suggestionsClosed.wav"))
 
 class WebDialog(NVDAObject):
 	"""

source/addonHandler/__init__.py

@@ -97,7 +97,7 @@ def getIncompatibleAddons(
 
 def completePendingAddonRemoves():
 	"""Removes any add-ons that could not be removed on the last run of NVDA"""
-	user_addons = os.path.abspath(os.path.join(globalVars.appArgs.configPath, "addons"))
+	user_addons = os.path.join(globalVars.appArgs.configPath, "addons")
 	pendingRemovesSet=state['pendingRemovesSet']
 	for addonName in list(pendingRemovesSet):
 		addonPath=os.path.join(user_addons,addonName)
@@ -111,7 +111,7 @@ def completePendingAddonRemoves():
 		pendingRemovesSet.discard(addonName)
 
 def completePendingAddonInstalls():
-	user_addons = os.path.abspath(os.path.join(globalVars.appArgs.configPath, "addons"))
+	user_addons = os.path.join(globalVars.appArgs.configPath, "addons")
 	pendingInstallsSet=state['pendingInstallsSet']
 	for addonName in pendingInstallsSet:
 		newPath=os.path.join(user_addons,addonName)
@@ -123,7 +123,7 @@ def completePendingAddonInstalls():
 	pendingInstallsSet.clear()
 
 def removeFailedDeletions():
-	user_addons = os.path.abspath(os.path.join(globalVars.appArgs.configPath, "addons"))
+	user_addons = os.path.join(globalVars.appArgs.configPath, "addons")
 	for p in os.listdir(user_addons):
 		if p.endswith(DELETEDIR_SUFFIX):
 			path=os.path.join(user_addons,p)
@@ -170,7 +170,7 @@ def _getDefaultAddonPaths():
 	@rtype: list(string)
 	"""
 	addon_paths = []
-	user_addons = os.path.abspath(os.path.join(globalVars.appArgs.configPath, "addons"))
+	user_addons = os.path.join(globalVars.appArgs.configPath, "addons")
 	if os.path.isdir(user_addons):
 		addon_paths.append(user_addons)
 	return addon_paths
@@ -280,7 +280,7 @@ def __init__(self, path):
 		@param path: the base directory for the addon data.
 		@type path: string
 		"""
-		self.path = os.path.abspath(path)
+		self.path = path
 		self._extendedPackages = set()
 		manifest_path = os.path.join(path, MANIFEST_FILENAME)
 		with open(manifest_path, 'rb') as f:
@@ -511,7 +511,8 @@ def getCodeAddon(obj=None, frameDist=1):
 	if obj is None:
 		obj = sys._getframe(frameDist)
 	fileName  = inspect.getfile(obj)
-	dir= os.path.abspath(os.path.dirname(fileName))
+	assert os.path.isabs(fileName), f"Module file name {fileName} is not absolute"
+	dir = os.path.dirname(fileName)
 	# if fileName is not a subdir of one of the addon paths
 	# It does not belong to an addon.
 	for p in _getDefaultAddonPaths():
@@ -523,7 +524,7 @@ def getCodeAddon(obj=None, frameDist=1):
 	while curdir not in _getDefaultAddonPaths():
 		if curdir in _availableAddons:
 			return _availableAddons[curdir]
-		curdir = os.path.abspath(os.path.join(curdir, ".."))
+		curdir = os.path.join(curdir, "..")
 	# Not found!
 	raise AddonError("Code does not belong to an addon")
 
@@ -609,7 +610,7 @@ def __repr__(self):
 
 def createAddonBundleFromPath(path, destDir=None):
 	""" Creates a bundle from a directory that contains a a addon manifest file."""
-	basedir = os.path.abspath(path)
+	basedir = path
 	# If  caller did not provide a destination directory name
 	# Put the bundle at the same level as the add-on's top-level directory,
 	# That is, basedir/..

source/brailleDisplayDrivers/lilli.py

@@ -5,14 +5,16 @@
 #Copyright (C) 2008-2017 NV Access Limited, Gianluca Casalino, Alberto Benassati, Babbage B.V.
 from typing import Optional, List
 
+import os
+import globalVars
 from logHandler import log
-from ctypes import *
+from ctypes import windll
 import inputCore
 import wx
 import braille
 
 try:
-	lilliDll=windll.LoadLibrary("brailleDisplayDrivers\\lilli.dll")
+	lilliDll = windll.LoadLibrary(os.path.join(globalVars.appDir, "brailleDisplayDrivers", "lilli.dll"))
 except:
 	lilliDll=None
 

source/brailleTables.py

@@ -6,11 +6,14 @@
 """Manages information about available braille translation tables.
 """
 
+import os
 import collections
 from locale import strxfrm
+import globalVars
+
 
 #: The directory in which liblouis braille tables are located.
-TABLES_DIR = r"louis\tables"
+TABLES_DIR = os.path.join(globalVars.appDir, "louis", "tables")
 
 #: Information about a braille table.
 #: This has the following attributes:

source/browseMode.py

@@ -3,6 +3,7 @@
 # This file is covered by the GNU General Public License.
 # See the file COPYING for more details.
 
+import os
 import itertools
 import collections
 import winsound
@@ -39,8 +40,10 @@
 from NVDAObjects import NVDAObject
 import gui.contextHelp
 from abc import ABCMeta, abstractmethod
+import globalVars
 from typing import Optional
 
+
 REASON_QUICKNAV = OutputReason.QUICKNAV
 
 def reportPassThrough(treeInterceptor,onlyIfChanged=True):
@@ -52,8 +55,8 @@ def reportPassThrough(treeInterceptor,onlyIfChanged=True):
 	"""
 	if not onlyIfChanged or treeInterceptor.passThrough != reportPassThrough.last:
 		if config.conf["virtualBuffers"]["passThroughAudioIndication"]:
-			sound = r"waves\focusMode.wav" if treeInterceptor.passThrough else r"waves\browseMode.wav"
-			nvwave.playWaveFile(sound)
+			sound = "focusMode.wav" if treeInterceptor.passThrough else "browseMode.wav"
+			nvwave.playWaveFile(os.path.join(globalVars.appDir, "waves", sound))
 		else:
 			if treeInterceptor.passThrough:
 				# Translators: The mode to interact with controls in documents

source/characterProcessing.py

@@ -78,7 +78,7 @@ def __init__(self,locale):
 		@type locale: string
 		"""
 		self._entries = {}
-		fileName=os.path.join('locale',locale,'characterDescriptions.dic')
+		fileName = os.path.join(globalVars.appDir, 'locale', locale, 'characterDescriptions.dic')
 		if not os.path.isfile(fileName): 
 			raise LookupError(fileName)
 		f = codecs.open(fileName,"r","utf_8_sig",errors="replace")
@@ -367,12 +367,14 @@ def _getSpeechSymbolsForLocale(locale):
 		# Load the data before loading other symbols,
 		# in order to allow translators to override them.
 		try:
-			builtin.load(os.path.join("locale", locale, "cldr.dic"),
-				allowComplexSymbols=False)
+			builtin.load(
+				os.path.join(globalVars.appDir, "locale", locale, "cldr.dic"),
+				allowComplexSymbols=False
+			)
 		except IOError:
 			log.debugWarning("No CLDR data for locale %s" % locale)
 	try:
-		builtin.load(os.path.join("locale", locale, "symbols.dic"))
+		builtin.load(os.path.join(globalVars.appDir, "locale", locale, "symbols.dic"))
 	except IOError:
 		_noSymbolLocalesCache.add(locale)
 		raise LookupError("No symbol information for locale %s" % locale)

source/config/__init__.py

@@ -83,7 +83,7 @@ def isInstalledCopy():
 		return False
 	winreg.CloseKey(k)
 	try:
-		return os.stat(instDir)==os.stat(os.getcwd()) 
+		return os.stat(instDir) == os.stat(globalVars.appDir)
 	except WindowsError:
 		return False
 
@@ -125,7 +125,7 @@ def getUserDefaultConfigPath(useInstalledPathIfExists=False):
 			# Therefore add a suffix to the directory to make it specific to Windows Store application versions.
 			installedUserConfigPath+='_appx'
 		return installedUserConfigPath
-	return u'.\\userConfig\\'
+	return os.path.join(globalVars.appDir, 'userConfig')
 
 def getSystemConfigPath():
 	if isInstalledCopy():
@@ -227,7 +227,8 @@ def canStartOnSecureScreens():
 	# This function will be transformed into a flag in a future release.
 	return isInstalledCopy()
 
-SLAVE_FILENAME = u"nvda_slave.exe"
+
+SLAVE_FILENAME = os.path.join(globalVars.appDir, "nvda_slave.exe")
 
 #: The name of the registry key stored under  HKEY_LOCAL_MACHINE where system wide NVDA settings are stored.
 #: Note that NVDA is a 32-bit application, so on X64 systems, this will evaluate to "SOFTWARE\WOW6432Node\nvda"
@@ -252,7 +253,7 @@ def _setStartOnLogonScreen(enable):
 		winreg.SetValueEx(k, u"startOnLogonScreen", None, winreg.REG_DWORD, int(enable))
 
 def setSystemConfigToCurrentConfig():
-	fromPath=os.path.abspath(globalVars.appArgs.configPath)
+	fromPath = globalVars.appArgs.configPath
 	if ctypes.windll.shell32.IsUserAnAdmin():
 		_setSystemConfig(fromPath)
 	else:

source/core.py

@@ -224,15 +224,15 @@ def main():
 		globalVars.appArgs.configPath=config.getUserDefaultConfigPath(useInstalledPathIfExists=globalVars.appArgs.launcher)
 	#Initialize the config path (make sure it exists)
 	config.initConfigPath()
-	log.info("Config dir: %s"%os.path.abspath(globalVars.appArgs.configPath))
+	log.info(f"Config dir: {globalVars.appArgs.configPath}")
 	log.debug("loading config")
 	import config
 	config.initialize()
 	if config.conf['development']['enableScratchpadDir']:
 		log.info("Developer Scratchpad mode enabled")
 	if not globalVars.appArgs.minimal and config.conf["general"]["playStartAndExitSounds"]:
 		try:
-			nvwave.playWaveFile("waves\\start.wav")
+			nvwave.playWaveFile(os.path.join(globalVars.appDir, "waves", "start.wav"))
 		except:
 			pass
 	logHandler.setLogLevelFromConfig()
@@ -298,7 +298,10 @@ def onEndSession(evt):
 		speech.cancelSpeech()
 		if not globalVars.appArgs.minimal and config.conf["general"]["playStartAndExitSounds"]:
 			try:
-				nvwave.playWaveFile("waves\\exit.wav",asynchronous=False)
+				nvwave.playWaveFile(
+					os.path.join(globalVars.appDir, "waves", "exit.wav"),
+					asynchronous=False
+				)
 			except:
 				pass
 		log.info("Windows session ending")
@@ -410,7 +413,7 @@ def handlePowerStatusChange(self):
 	if not wxLang and '_' in lang:
 		wxLang=locale.FindLanguageInfo(lang.split('_')[0])
 	if hasattr(sys,'frozen'):
-		locale.AddCatalogLookupPathPrefix(os.path.join(os.getcwd(),"locale"))
+		locale.AddCatalogLookupPathPrefix(os.path.join(globalVars.appDir, "locale"))
 	# #8064: Wx might know the language, but may not actually contain a translation database for that language.
 	# If we try to initialize this language, wx will show a warning dialog.
 	# #9089: some languages (such as Aragonese) do not have language info, causing language getter to fail.
@@ -591,7 +594,10 @@ def run(self):
 
 	if not globalVars.appArgs.minimal and config.conf["general"]["playStartAndExitSounds"]:
 		try:
-			nvwave.playWaveFile("waves\\exit.wav",asynchronous=False)
+			nvwave.playWaveFile(
+				os.path.join(globalVars.appDir, "waves", "exit.wav"),
+				asynchronous=False
+			)
 		except:
 			pass
 	# #5189: Destroy the message window as late as possible

source/fonts/__init__.py

@@ -1,10 +1,10 @@
-# brailleViewer.py
 # A part of NonVisual Desktop Access (NVDA)
 # Copyright (C) 2019 NV Access Limited
 # This file is covered by the GNU General Public License.
 # See the file COPYING for more details.
 from typing import List
 
+import globalVars
 from logHandler import log
 import os
 from ctypes import WinDLL
@@ -13,7 +13,7 @@
 Loads custom fonts for use in NVDA.
 """
 
-fontsDir = os.path.abspath("fonts")
+fontsDir = os.path.join(globalVars.appDir, "fonts")
 
 
 def _isSupportedFontPath(f: str) -> bool: