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134 lines
3.5 KiB
Python
134 lines
3.5 KiB
Python
#!/usr/bin/python3
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# -*- coding: utf-8 -*-
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# key-mapper - GUI for device specific keyboard mappings
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# Copyright (C) 2021 sezanzeb <proxima@hip70890b.de>
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#
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# This file is part of key-mapper.
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#
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# key-mapper is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# key-mapper is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with key-mapper. If not, see <https://www.gnu.org/licenses/>.
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"""Path constants to be used."""
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import os
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import shutil
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import getpass
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import pwd
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from keymapper.logger import logger
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def get_user():
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"""Try to find the user who called sudo/pkexec."""
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try:
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return os.getlogin()
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except OSError:
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# failed in some ubuntu installations and in systemd services
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pass
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try:
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user = os.environ['USER']
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except KeyError:
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# possibly the systemd service. no sudo was used
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return getpass.getuser()
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if user == 'root':
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try:
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return os.environ['SUDO_USER']
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except KeyError:
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# no sudo was used
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pass
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try:
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pkexec_uid = int(os.environ['PKEXEC_UID'])
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return pwd.getpwuid(pkexec_uid).pw_name
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except KeyError:
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# no pkexec was used or the uid is unknown
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pass
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return user
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USER = get_user()
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CONFIG_PATH = os.path.join('/home', USER, '.config/key-mapper')
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def chown(path):
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try:
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shutil.chown(path, user=USER, group=USER)
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except LookupError:
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# the users group was missing in one case for whatever reason
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shutil.chown(path, user=USER)
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def touch(path, log=True):
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"""Create an empty file and all its parent dirs, give it to the user."""
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if path.endswith('/'):
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raise ValueError(f'Expected path to not end with a slash: {path}')
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if os.path.exists(path):
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return
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if log:
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logger.info('Creating file "%s"', path)
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mkdir(os.path.dirname(path), log=False)
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os.mknod(path)
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chown(path)
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def mkdir(path, log=True):
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"""Create a folder, give it to the user."""
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if os.path.exists(path):
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return
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if log:
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logger.info('Creating dir "%s"', path)
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# give all newly created folders to the user.
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# e.g. if .config/key-mapper/mouse/ is created the latter two
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base = os.path.split(path)[0]
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mkdir(base, log=False)
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os.makedirs(path)
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chown(path)
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def get_preset_path(device=None, preset=None):
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"""Get a path to the stored preset, or to store a preset to."""
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presets_base = os.path.join(CONFIG_PATH, 'presets')
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if device is None:
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return presets_base
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if preset is not None:
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# the extension of the preset should not be shown in the ui.
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# if a .json extension arrives this place, it has not been
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# stripped away properly prior to this.
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assert not preset.endswith('.json')
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preset = f'{preset}.json'
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if preset is None:
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return os.path.join(presets_base, device)
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return os.path.join(presets_base, device, preset)
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def get_config_path(*paths):
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"""Get a path in ~/.config/key-mapper/"""
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return os.path.join(CONFIG_PATH, *paths)
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