git.openwrt.org Git - feed/packages.git/blob

   1 From 4337e366163278815ea9fc6c952bffb579e885a0 Mon Sep 17 00:00:00 2001
   2 From: sebres <info@sebres.de>
   3 Date: Tue, 21 Jun 2022 16:56:57 +0200
   4 Subject: [PATCH] wrap global flags like ((?i)xxx) or (?:(?i)xxx) to local
   5  flags (?i:xxx) if supported by RE-engine in the python version
   6
   7 ---
   8  fail2ban/server/failregex.py | 10 ++++++++++
   9  1 file changed, 10 insertions(+)
  10
  11 --- a/fail2ban/server/failregex.py
  12 +++ b/fail2ban/server/failregex.py
  13 @@ -91,6 +91,13 @@ R_MAP = {
  14         "port": "fport",
  15  }
  16
  17 +# map global flags like ((?i)xxx) or (?:(?i)xxx) to local flags (?i:xxx) if supported by RE-engine in this python version:
  18 +try:
  19 +       re.search("^re(?i:val)$", "reVAL")
  20 +       R_GLOB2LOCFLAGS = ( re.compile(r"(?<!\\)\((?:\?:)?(\(\?[a-z]+)\)"), r"\1:" )
  21 +except:
  22 +       R_GLOB2LOCFLAGS = ()
  23 +
  24  def mapTag2Opt(tag):
  25         tag = tag.lower()
  26         return R_MAP.get(tag, tag)
  27 @@ -128,6 +135,9 @@ class Regex:
  28                 #
  29                 if regex.lstrip() == '':
  30                         raise RegexException("Cannot add empty regex")
  31 +               # special handling wrapping global flags to local flags:
  32 +               if R_GLOB2LOCFLAGS:
  33 +                       regex = R_GLOB2LOCFLAGS[0].sub(R_GLOB2LOCFLAGS[1], regex)
  34                 try:
  35                         self._regexObj = re.compile(regex, re.MULTILINE if multiline else 0)
  36                         self._regex = regex