1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
|
#!/usr/bin/env python3
#
# Copyright VyOS maintainers and contributors <maintainers@vyos.io>
#
# 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 re
import sys
allowedChars = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '.', '+', '*', '?', '^', '$', '(', ')', '[', ']', '{', '}', '|', '\\', ':', '-', '_', ' ' }
if __name__ == '__main__':
if len(sys.argv) != 2:
sys.exit(1)
value = sys.argv[1]
# Require at least one well-formed large-community tuple in the pattern.
tmp = value.split(':')
if len(tmp) < 3:
sys.exit(1)
# Simple guard against invalid community & 1003.2 pattern chars
if not set(value).issubset(allowedChars):
sys.exit(1)
# Don't feed FRR badly formed regex
try:
re.compile(value)
except re.error:
sys.exit(1)
sys.exit(0)
|
