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9747051a8b
Tests: - Functional tests work - Setting the media directory updates the configuration file. Newly set directory is shown on the app page after update. Signed-off-by: Sunil Mohan Adapa <sunil@medhas.org> Reviewed-by: James Valleroy <jvalleroy@mailbox.org>
93 lines
2.8 KiB
Python
93 lines
2.8 KiB
Python
# SPDX-License-Identifier: AGPL-3.0-or-later
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"""Configure minidlna server."""
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import subprocess
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from os import chmod, fdopen, remove, stat
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from shutil import move
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from tempfile import mkstemp
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import augeas
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from plinth import action_utils
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from plinth.actions import privileged
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from plinth.utils import grep
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CONFIG_PATH = '/etc/minidlna.conf'
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SYSCTL_CONF = '''# This file is managed and overwritten by FreedomBox.
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# Helps minidlna monitor changes in large media directories
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fs.inotify.max_user_watches = 100000
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'''
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def _undo_old_configuration_changes():
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"""Restore /etc/sysctl.conf to before our changes.
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Older version of minidlna app in FreedomBox < 20.9 wrote to
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/etc/sysctl.conf directly. This will cause conffile prompt during upgrade
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of procps package. Undo the changes so that upgrade can happen smoothly.
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"""
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aug = augeas.Augeas(flags=augeas.Augeas.NO_LOAD +
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augeas.Augeas.NO_MODL_AUTOLOAD)
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aug.set('/augeas/load/Sysctl/lens', 'Sysctl.lns')
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aug.set('/augeas/load/Sysctl/incl[last() + 1]', '/etc/sysctl.conf')
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aug.load()
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key_path = '/files/etc/sysctl.conf/fs.inotify.max_user_watches'
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if aug.get(key_path) == '100000':
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aug.remove(key_path)
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aug.save()
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@privileged
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def setup():
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"""Increase inotify watches per folder.
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This is to allow minidlna to monitor changes in large media-dirs.
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"""
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_undo_old_configuration_changes()
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with open('/etc/sysctl.d/50-freedombox-minidlna.conf', 'w',
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encoding='utf-8') as conf:
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conf.write(SYSCTL_CONF)
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subprocess.run(['systemctl', 'restart', 'systemd-sysctl'], check=True)
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@privileged
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def get_media_dir() -> str:
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"""Retrieve media directory from minidlna.conf."""
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line = grep('^media_dir=', CONFIG_PATH)
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return line[0].split('=')[1]
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@privileged
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def set_media_dir(media_dir: str):
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"""Set media directory in minidlna.conf."""
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line = grep('^media_dir=', CONFIG_PATH)[0]
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new_line = 'media_dir=%s\n' % media_dir
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replace_in_config_file(CONFIG_PATH, line, new_line)
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if action_utils.service_is_running('minidlna'):
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action_utils.service_restart('minidlna')
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def replace_in_config_file(file_path, pattern, subst):
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"""Replace a directive in configuration file.
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- Create a temporary minidlna.conf file
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- Replace the media dir config
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- Remove original one and move the temporary file
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- Preserve permissions as the original file
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"""
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temp_file, temp_file_path = mkstemp()
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with fdopen(temp_file, 'w') as new_file:
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with open(file_path, encoding='utf-8') as old_file:
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for line in old_file:
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new_file.write(line.replace(pattern, subst))
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old_st_mode = stat(file_path).st_mode
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remove(file_path)
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move(temp_file_path, file_path)
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chmod(file_path, old_st_mode)
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