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Fixes #4510

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This commit is contained in:
Miroslav Stampar
2021-01-05 13:36:04 +01:00
parent b36d8248a4
commit 91045aab60
4 changed files with 6 additions and 6 deletions
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4
lib/parse/handler.py
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@@ -20,7 +20,7 @@ class FingerprintHandler(ContentHandler):
def __init__(self, banner, info):
ContentHandler.__init__(self)
self._banner = sanitizeStr(banner)
self._banner = sanitizeStr(banner or "")
self._regexp = None
self._match = None
self._dbmsVersion = None
@@ -47,7 +47,7 @@ class FingerprintHandler(ContentHandler):
self._regexp = sanitizeStr(attrs.get("value"))
_ = re.match(r"\A[A-Za-z0-9]+", self._regexp) # minor trick avoiding compiling of large amount of regexes
if _ and _.group(0).lower() in self._banner.lower() or not _:
if _ and self._banner and _.group(0).lower() in self._banner.lower() or not _:
self._match = re.search(self._regexp, self._banner, re.I | re.M)
else:
self._match = None