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#!/usr/bin/env python3
# Simple udev rules syntax checker
#
# (C) 2010 Canonical Ltd.
# Author: Martin Pitt <martin.pitt@ubuntu.com>
#
# systemd is free software; you can redistribute it and/or modify it
# under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation; either version 2.1 of the License, or
# (at your option) any later version.
# systemd 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
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with systemd; If not, see <http://www.gnu.org/licenses/>.
import re
import sys
import os
from glob import glob
if len(sys.argv) > 1:
# explicit rule file list
rules_files = sys.argv[1:]
else:
# take them from the build dir
root_dir = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
rules_dir = os.path.join(os.environ.get('top_srcdir', root_dir), 'rules')
if not os.path.isdir(rules_dir):
sys.stderr.write('No rules files given, and %s does not exist, aborting' % rules_dir)
sys.exit(2)
rules_files = glob(os.path.join(rules_dir, '*.rules'))
no_args_tests = re.compile(r'(ACTION|DEVPATH|KERNELS?|NAME|SYMLINK|SUBSYSTEMS?|DRIVERS?|TAG|RESULT|TEST)\s*(?:=|!)=\s*"([^"]*)"$')
args_tests = re.compile(r'(ATTRS?|ENV|TEST){([a-zA-Z0-9/_.*%-]+)}\s*(?:=|!)=\s*"([^"]*)"$')
no_args_assign = re.compile(r'(NAME|SYMLINK|OWNER|GROUP|MODE|TAG|PROGRAM|RUN|LABEL|GOTO|OPTIONS|IMPORT)\s*(?:\+=|:=|=)\s*"([^"]*)"$')
args_assign = re.compile(r'(ATTR|ENV|IMPORT|RUN){([a-zA-Z0-9/_.*%-]+)}\s*(=|\+=)\s*"([^"]*)"$')
result = 0
buffer = ''
for path in rules_files:
lineno = 0
for line in open(path):
lineno += 1
# handle line continuation
if line.endswith('\\\n'):
buffer += line[:-2]
continue
else:
line = buffer + line
buffer = ''
# filter out comments and empty lines
line = line.strip()
if not line or line.startswith('#'):
continue
for clause in line.split(','):
clause = clause.strip()
if not (no_args_tests.match(clause) or args_tests.match(clause) or
no_args_assign.match(clause) or args_assign.match(clause)):
print('Invalid line %s:%i: %s' % (path, lineno, line))
print(' clause: %s' % clause)
print('')
result = 1
break
sys.exit(result)
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