1# $OpenBSD: cfgmatch.sh,v 1.9 2015/03/03 22:35:19 markus Exp $ 2# Placed in the Public Domain. 3 4tid="sshd_config match" 5 6pidfile=$OBJ/remote_pid 7fwdport=3301 8fwd="-L $fwdport:127.0.0.1:$PORT" 9 10echo "ExitOnForwardFailure=yes" >> $OBJ/ssh_config 11echo "ExitOnForwardFailure=yes" >> $OBJ/ssh_proxy 12 13start_client() 14{ 15 rm -f $pidfile 16 ${SSH} -q -$p $fwd "$@" somehost \ 17 exec sh -c \'"echo \$\$ > $pidfile; exec sleep 100"\' \ 18 >>$TEST_REGRESS_LOGFILE 2>&1 & 19 client_pid=$! 20 # Wait for remote end 21 n=0 22 while test ! -f $pidfile ; do 23 sleep 1 24 n=`expr $n + 1` 25 if test $n -gt 60; then 26 kill $client_pid 27 fatal "timeout waiting for background ssh" 28 fi 29 done 30} 31 32stop_client() 33{ 34 pid=`cat $pidfile` 35 if [ ! -z "$pid" ]; then 36 kill $pid 37 fi 38 wait 39} 40 41cp $OBJ/sshd_proxy $OBJ/sshd_proxy_bak 42echo "PermitOpen 127.0.0.1:1" >>$OBJ/sshd_config 43echo "Match Address 127.0.0.1" >>$OBJ/sshd_config 44echo "PermitOpen 127.0.0.1:$PORT" >>$OBJ/sshd_config 45 46grep -v AuthorizedKeysFile $OBJ/sshd_proxy_bak > $OBJ/sshd_proxy 47echo "AuthorizedKeysFile /dev/null" >>$OBJ/sshd_proxy 48echo "PermitOpen 127.0.0.1:1" >>$OBJ/sshd_proxy 49echo "Match user $USER" >>$OBJ/sshd_proxy 50echo "AuthorizedKeysFile /dev/null $OBJ/authorized_keys_%u" >>$OBJ/sshd_proxy 51echo "Match Address 127.0.0.1" >>$OBJ/sshd_proxy 52echo "PermitOpen 127.0.0.1:$PORT" >>$OBJ/sshd_proxy 53 54start_sshd 55 56#set -x 57 58# Test Match + PermitOpen in sshd_config. This should be permitted 59for p in ${SSH_PROTOCOLS}; do 60 trace "match permitopen localhost proto $p" 61 start_client -F $OBJ/ssh_config 62 ${SSH} -q -$p -p $fwdport -F $OBJ/ssh_config somehost true || \ 63 fail "match permitopen permit proto $p" 64 stop_client 65done 66 67# Same but from different source. This should not be permitted 68for p in ${SSH_PROTOCOLS}; do 69 trace "match permitopen proxy proto $p" 70 start_client -F $OBJ/ssh_proxy 71 ${SSH} -q -$p -p $fwdport -F $OBJ/ssh_config somehost true && \ 72 fail "match permitopen deny proto $p" 73 stop_client 74done 75 76# Retry previous with key option, should also be denied. 77cp /dev/null $OBJ/authorized_keys_$USER 78for t in ${SSH_KEYTYPES}; do 79 printf 'permitopen="127.0.0.1:'$PORT'" ' >> $OBJ/authorized_keys_$USER 80 cat $OBJ/$t.pub >> $OBJ/authorized_keys_$USER 81done 82for p in ${SSH_PROTOCOLS}; do 83 trace "match permitopen proxy w/key opts proto $p" 84 start_client -F $OBJ/ssh_proxy 85 ${SSH} -q -$p -p $fwdport -F $OBJ/ssh_config somehost true && \ 86 fail "match permitopen deny w/key opt proto $p" 87 stop_client 88done 89 90# Test both sshd_config and key options permitting the same dst/port pair. 91# Should be permitted. 92for p in ${SSH_PROTOCOLS}; do 93 trace "match permitopen localhost proto $p" 94 start_client -F $OBJ/ssh_config 95 ${SSH} -q -$p -p $fwdport -F $OBJ/ssh_config somehost true || \ 96 fail "match permitopen permit proto $p" 97 stop_client 98done 99 100cp $OBJ/sshd_proxy_bak $OBJ/sshd_proxy 101echo "PermitOpen 127.0.0.1:1 127.0.0.1:$PORT 127.0.0.2:2" >>$OBJ/sshd_proxy 102echo "Match User $USER" >>$OBJ/sshd_proxy 103echo "PermitOpen 127.0.0.1:1 127.0.0.1:2" >>$OBJ/sshd_proxy 104 105# Test that a Match overrides a PermitOpen in the global section 106for p in ${SSH_PROTOCOLS}; do 107 trace "match permitopen proxy w/key opts proto $p" 108 start_client -F $OBJ/ssh_proxy 109 ${SSH} -q -$p -p $fwdport -F $OBJ/ssh_config somehost true && \ 110 fail "match override permitopen proto $p" 111 stop_client 112done 113 114cp $OBJ/sshd_proxy_bak $OBJ/sshd_proxy 115echo "PermitOpen 127.0.0.1:1 127.0.0.1:$PORT 127.0.0.2:2" >>$OBJ/sshd_proxy 116echo "Match User NoSuchUser" >>$OBJ/sshd_proxy 117echo "PermitOpen 127.0.0.1:1 127.0.0.1:2" >>$OBJ/sshd_proxy 118 119# Test that a rule that doesn't match doesn't override, plus test a 120# PermitOpen entry that's not at the start of the list 121for p in ${SSH_PROTOCOLS}; do 122 trace "nomatch permitopen proxy w/key opts proto $p" 123 start_client -F $OBJ/ssh_proxy 124 ${SSH} -q -$p -p $fwdport -F $OBJ/ssh_config somehost true || \ 125 fail "nomatch override permitopen proto $p" 126 stop_client 127done 128