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Diffstat (limited to 'fail2ban/server/failregex.py')
| -rw-r--r-- | fail2ban/server/failregex.py | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/fail2ban/server/failregex.py b/fail2ban/server/failregex.py index 4032ecdb..e8042ddc 100644 --- a/fail2ban/server/failregex.py +++ b/fail2ban/server/failregex.py @@ -91,6 +91,13 @@ R_MAP = { "port": "fport", } +# map global flags like ((?i)xxx) or (?:(?i)xxx) to local flags (?i:xxx) if supported by RE-engine in this python version: +try: + re.search("^re(?i:val)$", "reVAL") + R_GLOB2LOCFLAGS = ( re.compile(r"(?<!\\)\((?:\?:)?(\(\?[a-z]+)\)"), r"\1:" ) +except: + R_GLOB2LOCFLAGS = () + def mapTag2Opt(tag): tag = tag.lower() return R_MAP.get(tag, tag) @@ -128,6 +135,9 @@ class Regex: # if regex.lstrip() == '': raise RegexException("Cannot add empty regex") + # special handling wrapping global flags to local flags: + if R_GLOB2LOCFLAGS: + regex = R_GLOB2LOCFLAGS[0].sub(R_GLOB2LOCFLAGS[1], regex) try: self._regexObj = re.compile(regex, re.MULTILINE if multiline else 0) self._regex = regex |