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runner.py
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runner.py
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## Copyright 2017 Knossos authors, see NOTICE file
##
## Licensed under the Apache License, Version 2.0 (the "License");
## you may not use this file except in compliance with the License.
## You may obtain a copy of the License at
##
## http://www.apache.org/licenses/LICENSE-2.0
##
## Unless required by applicable law or agreed to in writing, software
## distributed under the License is distributed on an "AS IS" BASIS,
## WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
## See the License for the specific language governing permissions and
## limitations under the License.
from __future__ import absolute_import, print_function
import sys
import os
import logging
import re
import threading
import subprocess
import time
import ctypes.util
import stat
import shutil
import six
from . import center, util, api
from .qt import QtCore, QtWidgets
# TODO: What happens if a SONAME contains a space?
FILE_PATH_RE = r'[a-zA-Z0-9\./\-\_\+]+'
LDD_RE = re.compile(r'\s*(' + FILE_PATH_RE + r') (?:=> (not found|' + FILE_PATH_RE + r'))?(?: \([^\)]+\))?\s*')
LIB_RE = re.compile(r'lib([a-zA-Z0-9\.\-\_\+]+)\.so(?:\..*)?')
LDCONF_RE = re.compile(r'\s*(' + FILE_PATH_RE + r') \([^\)]+\) => (' + FILE_PATH_RE + r')')
_LIB_CACHE = None
fs2_watcher = None
fred_watcher = None
translate = QtCore.QCoreApplication.translate
class SignalContainer(QtCore.QObject):
signal = QtCore.Signal(list)
# This wrapper makes sure that the wrapped function is always run in the QT main thread.
def run_in_qt(func):
cont = SignalContainer()
def dispatcher(*args):
cont.signal.emit(list(args))
def listener(params):
func(*params)
cont.signal.connect(listener)
return dispatcher
class Fs2Watcher(threading.Thread):
_params = None
_fred = False
_key_layout = None
def __init__(self, params=None, fred=False):
super(Fs2Watcher, self).__init__()
if params is None:
self._params = []
else:
self._params = params
self._fred = fred
self.daemon = True
self.start()
def run(self):
global fs2_watcher
old_path = None
if center.settings['keyboard_layout'] != 'default':
self._params.append('-keyboard_layout')
self._params.append(center.settings['keyboard_layout'])
if self._fred:
fs2_bin = os.path.join(center.settings['fs2_path'], center.settings['fred_bin'])
else:
fs2_bin = os.path.join(center.settings['fs2_path'], center.settings['fs2_bin'])
if not os.path.isfile(fs2_bin):
self.fs2_missing_msg(fs2_bin)
return
mode = os.stat(fs2_bin).st_mode
if mode & stat.S_IXUSR != stat.S_IXUSR:
# Make it executable.
os.chmod(fs2_bin, mode | stat.S_IXUSR)
env = os.environ.copy()
if sys.platform.startswith('linux'):
ld_path, missing = fix_missing_libs(fs2_bin)
if len(missing) > 0:
self.complain_missing(missing)
return
env['LD_LIBRARY_PATH'] = ld_path
if center.settings['keyboard_setxkbmap']:
self.set_us_layout()
if not self._check_profile_migration():
self.failed_msg(translate('runner', 'Failed to migrate your profile!'))
logging.debug('Launching FS2: %s', [fs2_bin] + self._params)
if sys.platform.startswith('win'):
if self._fred:
bin_path = center.settings['fred_bin']
else:
bin_path = center.settings['fs2_bin']
if os.path.basename(bin_path) != bin_path:
# On Windows, the FSO engine changes the CWD to the directory the EXE file is in.
# Since the fs2_bin is in a subdirectory we'll have to copy it!
old_path = fs2_bin
fs2_bin = os.path.join(center.settings['fs2_path'], '__tmp_' + os.path.basename(old_path))
shutil.copy2(old_path, fs2_bin)
# Make sure FSO still finds any DLL files located in the original EXE's folder.
old_parent = os.path.abspath(os.path.dirname(old_path))
if 'PATH' in env:
env['PATH'] = old_parent + os.pathsep + env['PATH']
else:
env['PATH'] = old_parent
if six.PY2:
env['PATH'] = env['PATH'].encode('utf8')
fail = False
rc = -999
reason = '???'
try:
p = subprocess.Popen([fs2_bin] + self._params, cwd=center.settings['fs2_path'], env=env)
time.sleep(0.3)
if p.poll() is not None:
rc = p.returncode
reason = 'return code: %d' % rc
fail = True
except OSError as exc:
logging.exception('Failed to launch FS2!')
reason = str(exc).decode('utf8', 'replace')
fail = True
if fail:
self.cleanup(fs2_bin, old_path)
center.signals.fs2_failed.emit(rc)
self.failed_msg(reason)
return
center.signals.fs2_launched.emit()
p.wait()
self.cleanup(fs2_bin, old_path)
center.signals.fs2_quit.emit()
@run_in_qt
def failed_msg(self, reason):
msg = translate('runner', 'Starting FS2 Open (%s) failed! (%s)') % (
os.path.join(center.settings['fs2_path'], center.settings['fs2_bin']), reason)
QtWidgets.QMessageBox.critical(center.app.activeWindow(), translate('runner', 'Failed'), msg)
@run_in_qt
def fs2_missing_msg(self, fs2_bin):
QtWidgets.QMessageBox.critical(None, 'Knossos',
translate('runner', 'I can\'t find FSO! (The file "%s" is missing!)') % fs2_bin)
@run_in_qt
def complain_missing(self, missing):
if len(missing) > 1:
msg = translate('runner', "I can't start FSO because the libraries %s are missing!")
else:
msg = translate('runner', "I can't start FSO because the library %s is missing!")
QtWidgets.QMessageBox.critical(None, 'Knossos', msg % util.human_list(missing))
def set_us_layout(self):
key_layout = util.check_output(['setxkbmap', '-query'])
self._key_layout = key_layout.splitlines()[2].split(':')[1].strip()
util.call(['setxkbmap', '-layout', 'us'])
def _check_profile_migration(self):
if api.get_fso_flags().sdl:
old_path = api.get_old_fso_profile_path()
cur_path = api.get_fso_profile_path()
if cur_path == old_path:
# Need to migrate (https://github.com/scp-fs2open/wxLauncher/blob/56b50de7c22ffbea34fe2ccb7a8686b005ced50e/code/global/Compatibility.cpp#L86)
new_path = api.get_new_fso_profile_path()
if new_path == 'None':
return False
logging.info('Copying pilots from old path to new path...')
try:
shutil.copytree(os.path.join(old_path, 'data', 'players'), os.path.join(new_path, 'data', 'players'))
except:
logging.exception('Failed to copy pilot files!')
return False
if sys.platform == 'win32':
# Read the registry and write the values to the new fs2_open.ini
logging.info('Writing registry values to fs2_open.ini...')
old_config = QtCore.QSettings(r'HKEY_LOCAL_MACHINE\Software\Volition\Freespace2', QtCore.QSettings.NativeFormat)
new_config = QtCore.QSettings(os.path.join(new_path, 'fs2_open.ini'), QtCore.QSettings.IniFormat)
new_config.beginGroup('Default')
for k in old_config.childKeys():
new_config.setValue(k, old_config.value(k))
new_config.endGroup()
for g in old_config.childGroups():
new_config.beginGroup(g)
old_config.beginGroup(g)
for k in old_config.childKeys():
new_config.setValue(k, old_config.value(k))
new_config.endGroup()
old_config.endGroup()
else:
logging.info('Copying fs2_open.ini...')
try:
shutil.copyfile(os.path.join(old_path, 'fs2_open.ini'), os.path.join(new_path, 'fs2_open.ini'))
except:
logging.exception('Failed to copy config file!')
return False
return True
else:
new_path = api.get_new_fso_profile_path()
cur_path = api.get_fso_profile_path()
if cur_path == new_path:
# Need to update the old path
logging.warning('Updating / creating old configuration because the selected build doesn\'t support ' +
'the new location.')
old_path = api.get_old_fso_profile_path()
if old_path == 'None':
return False
logging.info('Copying pilots from new path to old path...')
try:
shutil.copytree(os.path.join(new_path, 'data', 'players'), os.path.join(old_path, 'data', 'players'))
except:
logging.exception('Failed to copy pilot files!')
return False
if sys.platform == 'win32':
# Write the fs2_open.ini values to the registy
logging.info('Writing fs2_open.ini values to registry...')
old_config = QtCore.QSettings(r'HKEY_LOCAL_MACHINE\Software\Volition\Freespace2', QtCore.QSettings.NativeFormat)
new_config = QtCore.QSettings(os.path.join(old_path, 'fs2_open.ini'), QtCore.QSettings.IniFormat)
new_config.beginGroup('Default')
for k in new_config.childKeys():
old_config.setValue(k, new_config.value(k))
new_config.endGroup()
for g in new_config.childGroups():
new_config.beginGroup(g)
old_config.beginGroup(g)
for k in new_config.childKeys():
old_config.setValue(k, new_config.value(k))
new_config.endGroup()
old_config.endGroup()
else:
logging.info('Copying fs2_open.ini from new path to old path...')
try:
shutil.copyfile(os.path.join(new_path, 'fs2_open.ini'), os.path.join(old_path, 'fs2_open.ini'))
except:
logging.exception('Failed to copy config file!')
return False
return True
def cleanup(self, fs2_bin, old_path=None):
if self._key_layout is not None:
util.call(['setxkbmap', '-layout', self._key_layout])
if sys.platform.startswith('win') and old_path is not None:
# Cleanup
retries = 3
while retries > 0:
try:
os.unlink(fs2_bin)
except:
logging.exception('Failed to delete FSO file "%s"!', fs2_bin)
if os.path.isfile(fs2_bin):
time.sleep(1)
retries -= 1
else:
break
def check_elf_libs(fpath):
out = util.check_output(['ldd', fpath], env={'LANG': 'C'}).splitlines()
libs = {}
for r_line in out:
line = LDD_RE.match(r_line)
if not line:
logging.warning('Failed to parse ldd line "%s"!', r_line)
continue
if line.group(2) == 'not found':
libs[line.group(1)] = None
elif not line.group(2):
# This is most likely a line like "linux-vdso.so.1 (0x00007fff847fe000)" which we can ignore.
continue
else:
libs[line.group(1)] = line.group(2)
return libs
def get_lib_path(filename):
global _LIB_CACHE
if not _LIB_CACHE:
data = util.check_output(['ldconfig', '-p'], env={'LANG': 'C'}).splitlines()
_LIB_CACHE = {}
for line in data[1:]:
m = LDCONF_RE.match(line)
if not m:
logging.warning('Failed to parse ldconfig line "%s"!', line)
continue
_LIB_CACHE[m.group(1)] = m.group(2)
return _LIB_CACHE.get(filename)
def fix_missing_libs(fpath):
base = os.path.dirname(fpath)
patch_dir = os.path.join(base, '__k_plibs')
libs = check_elf_libs(fpath)
missing = []
for name, path in libs.items():
if not path:
missing.append(name)
if len(missing) == 0:
# Yay, nothing to do.
return '', missing
for lib in missing[:]:
p_name = os.path.join(patch_dir, lib)
if os.path.exists(p_name):
missing.remove(lib)
else:
ld_name = LIB_RE.match(lib)
if ld_name:
fixed_name = get_lib_path(ctypes.util.find_library(ld_name.group(1)))
if fixed_name:
if not os.path.isdir(patch_dir):
os.mkdir(patch_dir)
os.symlink(fixed_name, p_name)
missing.remove(lib)
return patch_dir, missing
def run_fs2(params=None):
global fs2_watcher
if fs2_watcher is None or not fs2_watcher.is_alive():
fs2_watcher = Fs2Watcher(params)
return True
else:
return False
def run_fred(params=None):
global fred_watcher
if not center.settings['fred_bin']:
QtWidgets.QMessageBox.critical(None, 'Knossos',
translate('runner', 'No FRED executable selected. Please go to Settings > Game settings and select one.'))
return
fred_path = os.path.join(center.settings['fs2_path'], center.settings['fred_bin'])
if not os.path.isfile(fred_path):
QtWidgets.QMessageBox.critical(None, 'Knossos',
translate('runner', 'The selected FRED executable was not found!' +
' Please go to Settings > Game settings and select one.'))
return
if fred_watcher is None or not fred_watcher.is_alive():
fred_watcher = Fs2Watcher(params, fred=True)
return True
else:
return False
def run_fs2_silent(params):
fs2_path = center.settings['fs2_path']
fs2_bin = os.path.join(fs2_path, center.settings['fs2_bin'])
if not os.path.isfile(fs2_bin):
return -128
mode = os.stat(fs2_bin).st_mode
if mode & stat.S_IXUSR != stat.S_IXUSR:
# Make it executable.
os.chmod(fs2_bin, mode | stat.S_IXUSR)
env = {}
if sys.platform.startswith('linux'):
ld_path, missing = fix_missing_libs(fs2_bin)
if len(missing) > 0:
return -127
env['LD_LIBRARY_PATH'] = ld_path
try:
return util.call([fs2_bin] + params, cwd=fs2_path, env=env)
except OSError:
return -129
def stringify_cmdline(line):
result = []
for part in line:
if '"' in part:
raise Exception("It's impossible to pass double quotes to FSO!")
if ' ' in part:
part = '"%s"' % part
result.append(part)
return ' '.join(result)