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Catch service resolution failure

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This commit is contained in:
Gerhard Rieger 2021-10-26 13:34:38 +02:00
parent 3efbf71430
commit ea5beb8e75
3 changed files with 56 additions and 0 deletions
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4
CHANGES
View file

@ -23,6 +23,10 @@ Corrections:
Corrected a typo in configure.ac that broke option --enable-openssl-base
Thanks to john1doe for reporting this issue.
Socat looped endlessly, not responding to SIGTERM, when a service name
(for port) could not be resolved.
Test: BAD_SERVICE
Testing:
Prevent the TIMESTAMP tests from sporadically failing due do seconds
overflow

42
test.sh
View file

@ -15092,6 +15092,44 @@ PORT=$((PORT+1))
N=$((N+1))
# Test if unknown service specs are handled properly
NAME=BAD_SERVICE
case "$TESTS" in
*%$N%*|*%functions%*|*%bugs%*|*%tcp%*|*%socket%*|*%$NAME%*)
TEST="$NAME: test if unknown service specs are handled properly"
# Try to resolve an unspecified TCP service "
if ! eval $NUMCOND; then :; else
tf="$td/test$N.stdout"
te="$td/test$N.stderr"
tdiff="$td/test$N.diff"
da="test$N $(date) $RANDOM"
CMD="$TRACE $SOCAT $opts - TCP:$LOCALHOST:zyxw"
printf "test $F_n $TEST... " $N
$CMD >/dev/null 2>"${te}" &
pid=$!
sleep 1
kill -9 $pid 2>/dev/null;
rc=$? # did process still exist?
if [ $rc -ne 0 ]; then
$PRINTF "$OK\n"
if [" $VERBOSE" ]; then
echo "$CMD &" >&2
fi
numOK=$((numOK+1))
else
$PRINTF "$FAILED\n"
echo "$CMD &" >&2
cat "${te}" >&2
numFAIL=$((numFAIL+1))
listFAIL="$listFAIL $N"
fi
fi # NUMCOND
;;
esac
PORT=$((PORT+1))
N=$((N+1))
# end of common tests
##################################################################################
@ -15215,6 +15253,10 @@ rc1=$?
kill $pid0 2>/dev/null; wait
if [ !!! ]; then
$PRINTF "$OK\n"
if [" $VERBOSE" ]; then
echo "$CMD0 &" >&2
echo "$CMD1" >&2
fi
numOK=$((numOK+1))
else
$PRINTF "$FAILED\n"

10
xio-ip.c
View file

@ -238,6 +238,16 @@ int xiogetaddrinfo(const char *node, const char *service,
continue;
}
if (error_num == EAI_SERVICE && protocol != 0) {
if (hints.ai_protocol == 0) {
Error7("getaddrinfo\"%s\", \"%s\", {%d,%d,%d,%d}, {}): %s",
node?node:"NULL", service?service:"NULL",
hints.ai_flags, hints.ai_family,
hints.ai_socktype, hints.ai_protocol,
gai_strerror(error_num));
if (res != NULL) freeaddrinfo(res);
if (numnode) free(numnode);
return STAT_NORETRY;
}
hints.ai_protocol = 0;
continue;
}