From ed26b7b0cedcdb9621ae7d4e225048614f52dc0f Mon Sep 17 00:00:00 2001 From: Mike Frysinger Date: Tue, 10 Oct 2006 06:18:40 +0000 Subject: iptables segfaults when given "" to --log-prefix (Mike Frysinger ) Bugzilla #516 --- extensions/libipt_LOG.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'extensions/libipt_LOG.c') diff --git a/extensions/libipt_LOG.c b/extensions/libipt_LOG.c index 5e5d3fd8..96cc7010 100644 --- a/extensions/libipt_LOG.c +++ b/extensions/libipt_LOG.c @@ -143,6 +143,10 @@ parse(int c, char **argv, int invert, unsigned int *flags, "Maximum prefix length %u for --log-prefix", (unsigned int)sizeof(loginfo->prefix) - 1); + if (strlen(optarg) == 0) + exit_error(PARAMETER_PROBLEM, + "No prefix specified for --log-prefix"); + if (strlen(optarg) != strlen(strtok(optarg, "\n"))) exit_error(PARAMETER_PROBLEM, "Newlines not allowed in --log-prefix"); -- cgit v1.2.3