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3e67e5c9 1#!/usr/bin/env python3
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2# Simple udev rules syntax checker
3#
4# (C) 2010 Canonical Ltd.
5# Author: Martin Pitt <martin.pitt@ubuntu.com>
6#
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7# systemd is free software; you can redistribute it and/or modify it
8# under the terms of the GNU Lesser General Public License as published by
9# the Free Software Foundation; either version 2.1 of the License, or
b2ad12eb 10# (at your option) any later version.
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11
12# systemd is distributed in the hope that it will be useful, but
13# WITHOUT ANY WARRANTY; without even the implied warranty of
14# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15# Lesser General Public License for more details.
b2ad12eb 16#
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17# You should have received a copy of the GNU Lesser General Public License
18# along with systemd; If not, see <http://www.gnu.org/licenses/>.
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19
20import re
21import sys
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22import os
23from glob import glob
b2ad12eb 24
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25if len(sys.argv) > 1:
26 # explicit rule file list
27 rules_files = sys.argv[1:]
28else:
29 # take them from the build dir
30 root_dir = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
31 rules_dir = os.path.join(os.environ.get('top_srcdir', root_dir), 'rules')
32 if not os.path.isdir(rules_dir):
33 sys.stderr.write('No rules files given, and %s does not exist, aborting' % rules_dir)
34 sys.exit(2)
35 rules_files = glob(os.path.join(rules_dir, '*.rules'))
b2ad12eb 36
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37no_args_tests = re.compile(r'(ACTION|DEVPATH|KERNELS?|NAME|SYMLINK|SUBSYSTEMS?|DRIVERS?|TAG|RESULT|TEST)\s*(?:=|!)=\s*"([^"]*)"$')
38args_tests = re.compile(r'(ATTRS?|ENV|TEST){([a-zA-Z0-9/_.*%-]+)}\s*(?:=|!)=\s*"([^"]*)"$')
39no_args_assign = re.compile(r'(NAME|SYMLINK|OWNER|GROUP|MODE|TAG|PROGRAM|RUN|LABEL|GOTO|OPTIONS|IMPORT)\s*(?:\+=|:=|=)\s*"([^"]*)"$')
40args_assign = re.compile(r'(ATTR|ENV|IMPORT|RUN){([a-zA-Z0-9/_.*%-]+)}\s*(=|\+=)\s*"([^"]*)"$')
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41
42result = 0
43buffer = ''
e8015e6e 44for path in rules_files:
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45 lineno = 0
46 for line in open(path):
47 lineno += 1
48
49 # handle line continuation
50 if line.endswith('\\\n'):
51 buffer += line[:-2]
52 continue
53 else:
54 line = buffer + line
55 buffer = ''
56
57 # filter out comments and empty lines
58 line = line.strip()
59 if not line or line.startswith('#'):
60 continue
61
62 for clause in line.split(','):
63 clause = clause.strip()
64 if not (no_args_tests.match(clause) or args_tests.match(clause) or
65 no_args_assign.match(clause) or args_assign.match(clause)):
66
be903bf9 67 print('Invalid line %s:%i: %s' % (path, lineno, line))
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68 print(' clause: %s' % clause)
69 print('')
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70 result = 1
71 break
72
73sys.exit(result)