diff options
Diffstat (limited to 't_client.sh')
| -rwxr-xr-x | t_client.sh | 298 |
1 files changed, 298 insertions, 0 deletions
diff --git a/t_client.sh b/t_client.sh new file mode 100755 index 0000000..3a0dadb --- /dev/null +++ b/t_client.sh @@ -0,0 +1,298 @@ +#!/bin/sh +# +# run OpenVPN client against ``test reference'' server +# - check that ping, http, ... via tunnel works +# - check that interface config / routes are properly cleaned after test end +# +# prerequisites: +# - openvpn binary in current directory +# - writable current directory to create subdir for logs +# - t_client.rc in current directory OR source dir that specifies tests +# - for "ping4" checks: fping binary in $PATH +# - for "ping6" checks: fping6 binary in $PATH +# + +if [ ! -x ./openvpn ] +then + echo "no (executable) openvpn binary in current directory. FAIL." >&2 + exit 1 +fi + +if [ ! -w . ] +then + echo "current directory is not writable (required for logging). FAIL." >&2 + exit 1 +fi + +if [ -r ./t_client.rc ] ; then + . ./t_client.rc +elif [ -r "${srcdir}"/t_client.rc ] ; then + . "${srcdir}"/t_client.rc +else + echo "cannot find 't_client.rc' in current directory or" >&2 + echo "source dir ('${srcdir}'). FAIL." >&2 + exit 1 +fi + +if [ -z "$CA_CERT" ] ; then + echo "CA_CERT not defined in 't_client.rc'. SKIP test." >&2 + exit 0 +fi + +if [ -z "$TEST_RUN_LIST" ] ; then + echo "TEST_RUN_LIST empty, no tests defined. SKIP test." >&2 + exit 0 +fi + +# make sure we have permissions to run ifconfig/route from OpenVPN +# can't use "id -u" here - doesn't work on Solaris +ID=`id` +if expr "$ID" : "uid=0" >/dev/null +then : +else + echo "$0: this test must run be as root. SKIP." >&2 + exit 0 +fi + +LOGDIR=t_client-`hostname`-`date +%Y%m%d-%H%M%S` +if mkdir $LOGDIR +then : +else + echo "can't create log directory '$LOGDIR'. FAIL." >&2 + exit 1 +fi + +exit_code=0 + +# ---------------------------------------------------------- +# helper functions +# ---------------------------------------------------------- +# print failure message, increase FAIL counter +fail() +{ + echo "" + echo "FAIL: $@" >&2 + fail_count=$(( $fail_count + 1 )) +} + +# print "all interface IP addresses" + "all routes" +# this is higly system dependent... +get_ifconfig_route() +{ + # linux / iproute2? + if [ -x /sbin/ip -o -x /usr/sbin/ip ] + then + echo "-- linux iproute2 --" + ip addr show | grep -v valid_lft + ip route show + ip -6 route show | sed -e 's/expires [0-9]*sec //' + return + fi + + # try uname + case `uname -s` in + Linux) + echo "-- linux / ifconfig --" + LANG=C ifconfig -a |egrep "( addr:|encap:)" + LANG=C netstat -rn -4 -6 + return + ;; + FreeBSD|NetBSD|Darwin) + echo "-- FreeBSD/NetBSD/Darwin [MacOS X] --" + ifconfig -a | egrep "(flags=|inet)" + netstat -rn | awk '$3 !~ /^UHL/ { print $1,$2,$3,$NF }' + return + ;; + OpenBSD) + echo "-- OpenBSD --" + ifconfig -a | egrep "(flags=|inet)" | \ + sed -e 's/pltime [0-9]*//' -e 's/vltime [0-9]*//' + netstat -rn | awk '$3 !~ /^UHL/ { print $1,$2,$3,$NF }' + return + ;; + SunOS) + echo "-- Solaris --" + ifconfig -a | egrep "(flags=|inet)" + netstat -rn + return + ;; + esac + + echo "get_ifconfig_route(): no idea how to get info on your OS. FAIL." >&2 + exit 20 +} + +# ---------------------------------------------------------- +# check ifconfig +# arg1: "4" or "6" -> for message +# arg2: IPv4/IPv6 address that must show up in out of "get_ifconfig_route" +check_ifconfig() +{ + proto=$1 ; shift + expect_list="$@" + + if [ -z "$expect_list" ] ; then return ; fi + + for expect in $expect_list + do + if get_ifconfig_route | fgrep "$expect" >/dev/null + then : + else + fail "check_ifconfig(): expected IPv$proto address '$expect' not found in ifconfig output." + fi + done +} + +# ---------------------------------------------------------- +# run pings +# arg1: "4" or "6" -> fping/fing6 +# arg2: "want_ok" or "want_fail" (expected ping result) +# arg3... -> fping arguments (host list) +run_ping_tests() +{ + proto=$1 ; want=$2 ; shift ; shift + targetlist="$@" + + # "no targets" is fine + if [ -z "$targetlist" ] ; then return ; fi + + case $proto in + 4) cmd=fping ;; + 6) cmd=fping6 ;; + *) echo "internal error in run_ping_tests arg 1: '$proto'" >&2 + exit 1 ;; + esac + + case $want in + want_ok) sizes_list="64 1440 3000" ;; + want_fail) sizes_list="64" ;; + esac + + for bytes in $sizes_list + do + echo "run IPv$proto ping tests ($want), $bytes byte packets..." + + echo "$cmd -b $bytes -C 20 -p 250 -q $targetlist" >>$LOGDIR/$SUF:fping.out + $cmd -b $bytes -C 20 -p 250 -q $targetlist >>$LOGDIR/$SUF:fping.out 2>&1 + + # while OpenVPN is running, pings must succeed (want='want_ok') + # before OpenVPN is up, pings must NOT succeed (want='want_fail') + + rc=$? + if [ $rc = 0 ] # all ping OK + then + if [ $want = "want_fail" ] # not what we want + then + fail "IPv$proto ping test succeeded, but needs to *fail*." + fi + else # ping failed + if [ $want = "want_ok" ] # not what we wanted + then + fail "IPv$proto ping test ($bytes bytes) failed, but should succeed." + fi + fi + done +} + +# ---------------------------------------------------------- +# main test loop +# ---------------------------------------------------------- +for SUF in $TEST_RUN_LIST +do + echo -e "\n### test run $SUF ###\n" + fail_count=0 + + echo "save pre-openvpn ifconfig + route" + get_ifconfig_route >$LOGDIR/$SUF:ifconfig_route_pre.txt + + # get config variables + eval openvpn_conf=\"\$OPENVPN_CONF_$SUF\" + eval expect_ifconfig4=\"\$EXPECT_IFCONFIG4_$SUF\" + eval expect_ifconfig6=\"\$EXPECT_IFCONFIG6_$SUF\" + eval ping4_hosts=\"\$PING4_HOSTS_$SUF\" + eval ping6_hosts=\"\$PING6_HOSTS_$SUF\" + + echo -e "\nrun pre-openvpn ping tests - targets must not be reachable..." + run_ping_tests 4 want_fail "$ping4_hosts" + run_ping_tests 6 want_fail "$ping6_hosts" + if [ "$fail_count" = 0 ] ; then + echo -e "OK.\n" + else + echo -e "FAIL: make sure that ping hosts are ONLY reachable via VPN, SKIP test $SUF". + exit_code=31 + continue + fi + + echo " run ./openvpn $openvpn_conf" + ./openvpn $openvpn_conf >$LOGDIR/$SUF:openvpn.log & + opid=$! + + # make sure openvpn client is terminated in case shell exits + trap "kill $opid" 0 + trap "kill $opid ; trap - 0 ; exit 1" 1 2 3 15 + + echo "wait for connection to establish..." + sleep 10 + + # test whether OpenVPN process is still there + if kill -0 $opid + then : + else + echo -e "OpenVPN process has failed to start up, check log ($LOGDIR/$SUF:openvpn.log). FAIL.\ntail of logfile follows:\n..." >&2 + tail $LOGDIR/$SUF:openvpn.log >&2 + trap - 0 1 2 3 15 + exit 10 + fi + + # compare whether anything changed in ifconfig/route setup? + echo "save ifconfig+route" + get_ifconfig_route >$LOGDIR/$SUF:ifconfig_route.txt + + echo -n "compare pre-openvpn ifconfig+route with current values..." + if diff $LOGDIR/$SUF:ifconfig_route_pre.txt \ + $LOGDIR/$SUF:ifconfig_route.txt >/dev/null + then + fail "no differences between ifconfig/route before OpenVPN start and now." + else + echo -e " OK!\n" + fi + + # expected ifconfig values in there? + check_ifconfig 4 "$expect_ifconfig4" + check_ifconfig 6 "$expect_ifconfig6" + + run_ping_tests 4 want_ok "$ping4_hosts" + run_ping_tests 6 want_ok "$ping6_hosts" + echo -e "ping tests done.\n" + + echo "stopping OpenVPN" + kill $opid + wait $! + rc=$? + if [ $rc != 0 ] ; then + fail "OpenVPN return code $rc, expect 0" + fi + + echo -e "\nsave post-openvpn ifconfig + route..." + get_ifconfig_route >$LOGDIR/$SUF:ifconfig_route_post.txt + + echo -n "compare pre- and post-openvpn ifconfig + route..." + if diff $LOGDIR/$SUF:ifconfig_route_pre.txt \ + $LOGDIR/$SUF:ifconfig_route_post.txt >$LOGDIR/$SUF:ifconfig_route_diff.txt + then + echo -e " OK.\n" + else + cat $LOGDIR/$SUF:ifconfig_route_diff.txt >&2 + fail "differences between pre- and post-ifconfig/route" + fi + if [ "$fail_count" = 0 ] ; then + echo -e "test run $SUF: all tests OK.\n" + else + echo -e "test run $SUF: $fail_count test failures. FAIL.\n"; + exit_code=30 + fi +done + +# remove trap handler +trap - 0 1 2 3 15 +exit $exit_code |