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Merge pull request #428 from ThomasWaldmann/fix-herror

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fix crash / add logging for reverse lookup on invalid ip address string
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TW 2019-04-14 22:24:21 +02:00 committed by GitHub
commit 4581f90f2d
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1 changed files with 4 additions and 0 deletions
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4
src/nsupdate/main/dnstools.py
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@ -285,6 +285,10 @@ def rev_lookup(ipaddr):
try:
return socket.gethostbyaddr(ipaddr)[0]
except socket.error as err:
if err.errno in (-5, 4):
# -5 / 4 == no address associated with hostname (invalid ip?)
logger.warning("errno -5 when trying to reverse lookup %r" % ipaddr)
break
if err.errno in (errno.EPERM, ):
# EPERM == 1 == unknown host
break