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#!/usr/bin/env python3
#
# Copyright (C) 2023 VyOS maintainers and contributors
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 or later as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import os
import sys
from vyos import ConfigError
from vyos.config import Config
from vyos.config_mgmt import ConfigMgmt
from vyos.config_mgmt import commit_post_hook_dir, commit_hooks
def get_config(config=None):
if config:
conf = config
else:
conf = Config()
base = ['system', 'config-management']
if not conf.exists(base):
return None
mgmt = ConfigMgmt(config=conf)
return mgmt
def verify(mgmt):
d = mgmt.config_dict
confirm = d.get('commit_confirm', {})
if confirm.get('action', '') == 'reload' and 'commit_revisions' not in d:
raise ConfigError('commit-confirm reload requires non-zero commit-revisions')
return
def generate(mgmt):
if mgmt is None:
return
mgmt.initialize_revision()
def apply(mgmt):
if mgmt is None:
return
locations = mgmt.locations
archive_target = os.path.join(commit_post_hook_dir, commit_hooks['commit_archive'])
if locations:
try:
os.symlink('/usr/bin/config-mgmt', archive_target)
except FileExistsError:
pass
except OSError as exc:
raise ConfigError from exc
else:
try:
os.unlink(archive_target)
except FileNotFoundError:
pass
except OSError as exc:
raise ConfigError from exc
revisions = mgmt.max_revisions
revision_target = os.path.join(
commit_post_hook_dir, commit_hooks['commit_revision']
)
if revisions > 0:
try:
os.symlink('/usr/bin/config-mgmt', revision_target)
except FileExistsError:
pass
except OSError as exc:
raise ConfigError from exc
else:
try:
os.unlink(revision_target)
except FileNotFoundError:
pass
except OSError as exc:
raise ConfigError from exc
if __name__ == '__main__':
try:
c = get_config()
verify(c)
generate(c)
apply(c)
except ConfigError as e:
print(e)
sys.exit(1)
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