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#!/bin/bash
# added 2016-04-15 by Thomas D., released under ASL 2.0
# Several tests need another user/group to test impersonation.
# This script can be sourced to prevent duplicated code.
# To support <bash-4.2 which don't support "declare -g" we declare
# the array outside of the function
declare -A TESTBENCH_TESTUSER
rsyslog_testbench_setup_testuser() {
local has_testuser=
local testusername=
local testgroupname=
if [ -z "${EUID}" ]; then
# Should never happen
echo "FATAL ERROR: \$EUID not set!"
exit 1
fi
if [ ${EUID} -eq 0 ]; then
# Only root is able to become a different user
local testusers=("rsyslog" "syslog" "daemon")
if [ -n "${RSYSLOG_TESTUSER}" ]; then
# User has specified an username/uid we should use in testbench
testusers=("${RSYSLOG_TESTUSER}" ${testusers[@]})
fi
local testuser=
for testuser in "${testusers[@]}"; do
testusername=$(id --user --name ${testuser} 2>/dev/null)
if [ -z "${testusername}" ]; then
echo "'id' did not find user \"${testuser}\" ... skipping, trying next user!"
continue
fi
testgroupname=$(id --group --name ${testuser} 2>/dev/null)
if [ -z "${testgroupname}" ]; then
echo "'id' did not find a primary group for \"${testuser}\" ... skipping, trying next user!"
continue
fi
has_testuser="${testuser}"
break
done
if [ -z "${has_testuser}" ]; then
echo "ERROR: running as root and no suiteable testuser found - skipping test"
echo 'You mas set a testuser via the RSYSLOG_TESTUSER environment variable'
exit 77
fi
echo "WARNING: making work directory world-writable, as we need this to be able to"
echo " open and process files after privilege drop. This is NOT automatically"
echo " undone."
chmod a+w .
fi
if [ -z "${has_testuser}" ]; then
testgroupname=$(id --group --name ${EUID} 2>/dev/null)
if [ -z "${testgroupname}" ]; then
echo "Skipping ... please set RSYSLOG_TESTUSER or make sure the user running the testbench has a primary group!"
exit_test
exit 0
else
has_testuser="${EUID}"
fi
fi
_rsyslog_testbench_declare_testuser ${has_testuser}
}
_rsyslog_testbench_declare_testuser() {
local testuser=$1
local testusername=$(id --user --name ${testuser} 2>/dev/null)
if [ -z "${testusername}" ]; then
# Should never happen
echo "FATAL ERROR: Could not get username for user \"${testuser}\"!"
exit 1
fi
local testuid=$(id --user ${testuser} 2>/dev/null)
if [ -z "${testuid}" ]; then
# Should never happen
echo "FATAL ERROR: Could not get uid for user \"${testuser}\"!"
exit 1
fi
local testgroupname=$(id --group --name ${testuser} 2>/dev/null)
if [ -z "${testgroupname}" ]; then
# Should never happen
echo "FATAL ERROR: Could not get uid of user \"${testuser}\"!"
exit 1
fi
local testgid=$(id --group ${testuser} 2>/dev/null)
if [ -z "${testgid}" ]; then
# Should never happen
echo "FATAL ERROR: Could not get primary gid of user \"${testuser}\"!"
exit 1
fi
echo "Will use user \"${testusername}\" (#${testuid}) and group \"${testgroupname}\" (#${testgid})"
TESTBENCH_TESTUSER[username]=${testusername}
TESTBENCH_TESTUSER[uid]=${testuid}
TESTBENCH_TESTUSER[groupname]=${testgroupname}
TESTBENCH_TESTUSER[gid]=${testgid}
}
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