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#!/bin/bash
# This tests checks for a anomaly we have seen in practice:
# gethostname() may return an empty string as hostname (""). This broke
# some versions of rsyslog, newer ones return "localhost" in that case.
# The test is done with the help of a preload library specifically written
# for this purpose (liboverride_gethostname.so). It will override
# gethostname() and return an empty string. Then, the test checks if the
# hardcoded default of "localhost-empty-hostname" is used.
# Note that the test may fail if the library is not properly preloaded.
# This is part of the rsyslog testbench, licensed under ASL 2.0
. ${srcdir:=.}/diag.sh init
skip_platform "AIX" "we cannot preload required dummy lib"
generate_conf
add_conf '
action(type="omfile" file=`echo $RSYSLOG_OUT_LOG`)
'
export RSYSLOG_PRELOAD=.libs/liboverride_gethostname.so
startup
shutdown_when_empty # shut down rsyslogd when done processing messages
wait_shutdown # we need to wait until rsyslogd is finished!
grep " localhost-empty-hostname " < $RSYSLOG_OUT_LOG
if [ ! $? -eq 0 ]; then
echo "expected hostname \"localhost-empty-hostname\" not found in logs, $RSYSLOG_OUT_LOG is:"
cat $RSYSLOG_OUT_LOG
error_exit 1
fi;
exit_test
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