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56 lines
1.7 KiB
Python
56 lines
1.7 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) 2020 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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"""To check if access to devices in /dev is possible."""
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import os
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import sys
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import grp
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import getpass
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from keymapper.logger import logger
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def can_read_devices():
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"""If the people ever looks into the console, make sure to help them."""
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is_root = getpass.getuser() == 'root'
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is_test = 'unittest' in sys.modules.keys()
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is_in_input_group = os.getlogin() in grp.getgrnam('input').gr_mem
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is_in_plugdev_group = os.getlogin() in grp.getgrnam('plugdev').gr_mem
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def warn(group):
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logger.warning(
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'Some devices may not be visible without being in the '
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f'"%s" user group. Try `sudo usermod -a -G %s $USER` '
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'and log out and back in.',
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group,
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group
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)
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if not is_root and not is_test:
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if not is_in_plugdev_group:
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warn('plugdev')
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if not is_in_input_group:
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warn('input')
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return is_root or is_test or is_in_input_group
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