### -*-autotest-*-
###
### Test script for the main server
###
### (c) 2008 Straylight/Edgeware
###
###----- Licensing notice ---------------------------------------------------
###
### This file is part of Trivial IP Encryption (TrIPE).
###
### TrIPE is free software: you can redistribute it and/or modify it under
### the terms of the GNU General Public License as published by the Free
### Software Foundation; either version 3 of the License, or (at your
### option) any later version.
###
### TrIPE is distributed in the hope that it will be useful, but WITHOUT
### ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
### FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
### for more details.
###
### You should have received a copy of the GNU General Public License
### along with TrIPE. If not, see .
m4_define([nl], [
])
## Configure a directory ready for use by tripe.
m4_define([SETUPDIR], [
cp $abs_top_srcdir/t/keyring-$1 ./keyring
key extract -f-secret keyring.pub
])
## Running standard programs with useful options.
m4_define([TRIPE],
[env TRIPE_PRIVHELPER=$abs_top_builddir/priv/tripe-privhelper \
$abs_top_builddir/server/tripe -F -d. -aadmin -p0 -b127.0.0.1 \
${TRIPE_TEST_TRACEOPTS+-T$TRIPE_TEST_TRACEOPTS}])
m4_define([TRIPECTL], [$abs_top_builddir/client/tripectl -d. -aadmin])
m4_define([USLIP], [$abs_top_builddir/uslip/tripe-uslip])
m4_define([MITM], [$abs_top_builddir/proxy/tripe-mitm])
m4_define([BULKTEST],
[$abs_top_builddir/server/tripe-test \
${TRIPE_TEST_TRACEOPTS+-T$TRIPE_TEST_TRACEOPTS}])
## Pause for a bit.
m4_define([SLEEP], [sleep 0.2])
## WITH_STRACE(tag, cmd)
##
## There's an awful hack here. If a process running under strace exits with
## a signal, then strace will kill itself with the same signal -- and
## therefore clobber the original process's core file. So we arrange to run
## strace in one directory and have the child process run in another.
m4_define([WITH_STRACE],
[case "${TRIPE_TEST_STRACE-nil}" in
nil)
$2
;;
*)
mkdir -p strace-hack.$1/
(ulimit -c hard >/dev/null 2>&1
sh -c 'cd strace-hack.$1; exec "$[]@"' - \
strace -ff -tt -v -s1024 -o../$1.trace \
sh -c 'cd ..; exec "$[]@"' - \
$2)
;;
esac])
## Sequences. (These are used for testing the replay protection machinery.)
m4_define([R32], [ 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 dnl
16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31])
m4_define([P32], [21 26 14 12 25 18 2 27 10 31 24 29 0 20 17 11 dnl
8 3 7 23 19 1 13 30 6 9 5 22 15 28 16 4])
###--------------------------------------------------------------------------
### Scaffolding for running a TrIPE server.
## WITH_TRIPEX(dir, args, body)
m4_define([WITH_TRIPEX], [
## If this directory doesn't exist then Bad Things will happen.
if test ! -d $1; then
echo >&2 "server directory \`$1' doesn't exist"
exit 99
fi
## Remove the status file. This is how we notice that the server's died.
rm -f $1/server-status
> $1/expected-server-output
> $1/expected-server-errors
## Autotest writes crap to standard output, which we don't want going to the
## server. So keep a copy of the standard output, do the pipe, and recover
## the old stdout inside the group.
exec 3>&1
{ (
exec 1>&3 3>&-
## Wait for the socket to appear. Watch for the server crashing during
## initialization. Busy waiting is evil, but it's the best I can do and
## not sleep for ages. (Yes, a second on each test group is a long time.)
while test ! -r $1/server-status && test ! -S $1/admin; do :; done
## Make the port number availale.
AT_CHECK([TRIPECTL -d$1 PORT],, [stdout])
mv stdout $1/port
## Test body...
$3
## End of the test, now run the server.
) && :; } | {
cd $1
echo "TRIPE $2" >&2
WITH_STRACE([tripe], [TRIPE $2 >server-output.full 2>server-errors.full])
stat=$?
echo $stat >server-status
if test $stat -ne 0; then
echo "exit status: $stat" >>server-errors.full
fi
grep -v '^+ tripe: ' server-errors.full >server-errors
## We interrupt this relatively sensible macro for an especially awful
## hack. The tripe server emits warnings which are often caused by lack of
## synchronization between two peers. These are harmless and shouldn't
## cause test failures. But we shouldn't just trim out all messages that
## look like the spurious ones: if they appear when we're not expecting
## them, that's bad and they should properly cause a test failure.
##
## So we use the WARN command to insert magic directives into the server's
## message stream. The directives begin with `WARN USER test'; remaining
## tokens may be as follows.
##
## PUSH Introduce a new layer of nesting. Settings between
## this PUSH and the matching POP will be forgotten
## following the POP.
##
## POP End a layer of nesting. See PUSH above.
##
## IGNORE tokens Ignore lines which begin with the tokens.
##
## Token comparison isn't done very well, but it's good enough for these
## purposes.
##
## We also trim out trace lines here, since it's useful to produce them for
## debugging purposes and changing or introducing more of them shouldn't
## cause failures.
awk '
BEGIN {
sp = 0;
npat = 0;
}
$[]1 == "TRACE" { next; }
$[]1 == "WARN" && $[]2 == "USER" && $[]3 == "test" {
if ($[]4 == "PUSH")
npatstk[[sp++]] = npat;
else if ($[]4 == "IGNORE") {
s = "";
p = "";
for (i = 5; i <= NF; i++) {
p = p s $[]i;
s = " ";
}
pat[[npat++]] = p;
} else if ($[]4 == "POP")
npat = npatstk[[--sp]];
next;
}
{
for (i = 0; i < npat; i++) {
n = length(pat[[i]]);
if (substr($[]0, 1, n) == pat[[i]])
next;
}
print $[]0;
}
' server-output.full >server-output
}
exec 3>&-
## Now check that the server's output matches our expectations.
mv $1/expected-server-output expout
mv $1/expected-server-errors experr
AT_CHECK([cat $1/server-output; cat >&2 $1/server-errors],,
[expout], [experr])
])
## WITH_TRIPE(args, body)
m4_define([WITH_TRIPE], [WITH_TRIPEX([.], [$1], [$2])])
## WITH_2TRIPES(adir, bdir, bothargs, aargs, bargs, body)
m4_define([WITH_2TRIPES],
[WITH_TRIPEX([$1], [$3 $4], [WITH_TRIPEX([$2], [$3 $5], [$6])])])
## WITH_3TRIPES(adir, bdir, cdir, allargs, aargs, bargs, cargs, body)
m4_define([WITH_3TRIPES],
[WITH_TRIPEX([$1], [$4 $5],
[WITH_TRIPEX([$2], [$4 $6],
[WITH_TRIPEX([$3], [$4 $7],
[$8])])])])
## RETRY(n, body)
m4_define([RETRY], [
n=0 rc=1
while test $n -lt $1; do
if $2
then rc=0; break
fi
n=$(( $n + 1 ))
done
exit $rc
])
## COMMS_EPING(adir, aname, bdir, bname, [n])
m4_define([COMMS_EPING], [
AT_CHECK([RETRY([m4_default([$5], [1])],
[TRIPECTL -d$1 EPING $4])],, [ignore])
AT_CHECK([RETRY([m4_default([$5], [1])],
[TRIPECTL -d$3 EPING $2])],, [ignore])
])
## COMMS_SLIP(adir, aname, bdir, bname)
m4_define([COMMS_SLIP], [
AT_CHECK([echo "from $1" | USLIP -p $1/$4])
AT_CHECK([USLIP -g $3/$2],, [from $1[]nl])
AT_CHECK([echo "from $3" | USLIP -p $3/$2])
AT_CHECK([USLIP -g $1/$4],, [from $3[]nl])
])
## AWAIT_KXDONE(adir, aname, bdir, bname, body)
m4_define([AWAIT_KXDONE], [
## Ignore some reports caused by races.
for i in $1!$4 $3!$2; do
d=${i%!*} o=${i#*!}
TRIPECTL -d$d WARN test PUSH
TRIPECTL -d$d WARN test IGNORE WARN KX $o incorrect cookie
TRIPECTL -d$d WARN test IGNORE WARN KX $o unexpected pre-challenge
TRIPECTL -d$d WARN test IGNORE WARN KX $o unexpected challenge
done
## Watch for the key-exchange completion announcement in the background.
COPROCESSES([wait-$1], [
echo "WATCH +n"
while read line; do
set x $line; shift
echo >&2 ">>> $line"
case "$[]1:$[]2:$[]3" in
OK::) ;;
NOTE:KXDONE:$4) break ;;
NOTE:* | TRACE:* | WARN:*) ;;
*) exit 63 ;;
esac
done
], [
TRIPECTL -d$1
]) & waiter_$1=$!
$5
## Collect the completion announcement.
wait $waiter_$1; waitrc=$?
AT_CHECK([echo $waitrc],, [0[]nl])
## Be interested in key-exchange warnings again.
for d in $1 $3; do TRIPECTL -d$d WARN test POP; done
])
## ESTABLISH(adir, aname, aopts, bdir, bname, bopts, [aport], [bport])
m4_define([ESTABLISH], [
## Set up the establishment.
AWAIT_KXDONE([$1], [$2], [$4], [$5], [
AT_CHECK([TRIPECTL -d$1 ADD -cork $6 $5 INET 127.0.0.1 \
m4_if([$8], [], [$(cat $4/port)], [$8])])
AT_CHECK([TRIPECTL -d$4 ADD $3 $2 INET 127.0.0.1 \
m4_if([$7], [], [$(cat $1/port)], [$7])])
])
## Check transport pinging.
AT_CHECK([TRIPECTL -d$1 PING $5],, [ignore])
AT_CHECK([TRIPECTL -d$4 PING $2],, [ignore])
## Check communication works.
COMMS_EPING([$1], [$2], [$4], [$5])
COMMS_SLIP([$1], [$2], [$4], [$5])
])
###--------------------------------------------------------------------------
### Very unpleasant coprocess handling.
## COPROCESSES(TAG, PROC-A, PROC-B)
m4_define([COPROCESSES], [dnl
rm -f pipe-$1; mknod pipe-$1 p
{ { $2 nl } pipe-$1; } dnl
])
## TRIPECTL_INTERACT(ARGS, SHELLSTUFF)
m4_define([TRIPECTL_INTERACT], [
exec 3>&1
COPROCESSES([client], [exec 4>&1 1>&3 $1], [TRIPECTL $2])
])
## TRIPECTL_COMMAND(CMD, EXPECT)
m4_define([TRIPECTL_COMMAND], [
AT_CHECK([
m4_if([$1], [!], [:], [echo "$1" >&4])
read line
case "$line" in
"$2") ;;
*) echo 2>&1 "submitted $1: expected $2, found $line"; exit 1 ;;
esac
])
exec 3>&-
])
###--------------------------------------------------------------------------
### Make sure the thing basically works.
AT_SETUP([server basics])
SETUPDIR([alpha])
AT_CHECK([echo "port" | TRIPE -p54321],, [INFO 54321[]nl[]OK[]nl])
AT_CLEANUP
###--------------------------------------------------------------------------
### Challenges.
AT_SETUP([server challenges])
AT_KEYWORDS([chal])
SETUPDIR([alpha])
WITH_TRIPE(, [
## A simple test.
AT_CHECK([chal=$(TRIPECTL GETCHAL); TRIPECTL checkchal $chal])
## A wrong challenge. (This was valid once, but the probablity that the
## server chose the same key is negligible.)
AT_CHECK([TRIPECTL checkchal AAAAAHyoOL+HMaE0Y9B3ivuszt0], [1],,
[tripectl: invalid-challenge[]nl])
echo "WARN CHAL incorrect-tag" >>expected-server-output
## A duplicated challenge.
AT_CHECK([
chal=$(TRIPECTL GETCHAL)
TRIPECTL CHECKCHAL $chal
TRIPECTL CHECKCHAL $chal
], [1],, [tripectl: invalid-challenge[]nl])
echo "WARN CHAL replay duplicated-sequence" >>expected-server-output
## Out-of-order reception. There should be a window of 32 challenges; we
## make 33 and check them in a strange order.
rm -f experr
echo "tripectl: invalid-challenge" >>experr
echo "WARN CHAL replay old-sequence" >>expected-server-output
for i in P32; do
echo "tripectl: invalid-challenge" >>experr
echo "WARN CHAL replay duplicated-sequence" >>expected-server-output
done
AT_CHECK([
## Make the challenges.
for i in old R32; do TRIPECTL GETCHAL >chal-$i || exit 2; done
## Now check them back.
for i in P32; do TRIPECTL CHECKCHAL $(cat chal-$i) || exit 3; done
## Check the one which should have fallen off the front.
TRIPECTL CHECKCHAL $(cat chal-old) && exit 4
## And make sure that the others are now considered duplicates.
for i in R32; do TRIPECTL CHECKCHAL $(cat chal-$i) && exit 5; done
## All done: tidy cruft away.
rm -f chal-*
exit 0
], [0],, [experr])
])
AT_CLEANUP
###--------------------------------------------------------------------------
### Communication.
AT_SETUP([server communication])
AT_KEYWORDS([comm])
export TRIPE_SLIPIF=USLIP
for k in alpha beta-new; do
for p in alice bob; do (
rm -rf $p; mkdir $p; cd $p; SETUPDIR([$k])
); done
WITH_2TRIPES([alice], [bob], [-nslip], [-talice], [-tbob], [
ESTABLISH([alice], [not-alice], [-key alice],
[bob], [bob], [])
])
for p in alice bob; do rm -rf $p.$k; mv $p $p.$k; done
done
AT_CLEANUP
###--------------------------------------------------------------------------
### Mobile peer tracking.
AT_SETUP([peer tracking])
AT_KEYWORDS([mobile])
export TRIPE_SLIPIF=USLIP
for p in alice bob carol; do (mkdir $p; cd $p; SETUPDIR([alpha])); done
## WITH_MITM(adir, aport, bdir, bport, body)
m4_define([WITH_MITM], [
aspec="$2" bspec="$4"
case $aspec in =*) aport="?$1/$3.mitm" ;; *) aport=$aspec ;; esac
case $bspec in =*) bport="?$3/$1.mitm" ;; *) bport=$bspec ;; esac
MITM -k$1/keyring.pub \
peer:$1:$aport:127.0.0.1:$(cat $1/port) \
peer:$3:$bport:127.0.0.1:$(cat $3/port) \
filt:send& mitmpid_$1_$3=$!
SLEEP
case $aspec in =*) aport=$(cat ${aport#\?}); eval ${aspec#=}=\$aport ;; esac
case $bspec in =*) bport=$(cat ${bport#\?}); eval ${bspec#=}=\$bport ;; esac
echo >&2 "mitm: $1 <--> :$aport <-mitm-> :$bport <--> $3"
trap 'kill $mitmpid_$1_$3; exit 127' EXIT INT QUIT TERM HUP
SLEEP
$5
kill $mitmpid_$1_$3; trap - EXIT INT QUIT TERM HUP
])
WITH_3TRIPES([alice], [bob], [carol], [-nslip],
[-talice], [-tbob], [-tcarol], [
## We need an indirection layer between the two peers so that we can
## simulate the effects of NAT remapping. The nearest thing we have to
## this is the mitm proxy, so we may as well use that.
##
## alice <--> :5311 <-mitm-> :5312 <--> bob
## alice <--> :5321 <-mitm-> :5322 <--> carol
WITH_MITM([alice], [=bob_from_alice], [bob], [=alice_from_bob], [
ESTABLISH([alice], [alice], [],
[bob], [bob], [-mobile],
[$alice_from_bob], [$bob_from_alice])
])
WITH_MITM([alice], [=new_bob_from_alice], [bob], [$alice_from_bob], [
COMMS_EPING([bob], [bob], [alice], [alice])
COMMS_SLIP([bob], [bob], [alice], [alice])
])
WITH_MITM([alice], [=carol_from_alice], [carol], [=alice_from_carol], [
ESTABLISH([alice], [alice], [],
[carol], [carol], [-mobile],
[$alice_from_carol], [$carol_from_alice])
])
WITH_MITM([alice], [$bob_from_alice], [bob], [$alice_from_bob], [
WITH_MITM([alice], [$carol_from_alice], [carol], [$alice_from_carol], [
COMMS_EPING([bob], [bob], [alice], [alice])
COMMS_EPING([carol], [carol], [alice], [alice])
COMMS_SLIP([bob], [bob], [alice], [alice])
COMMS_SLIP([carol], [carol], [alice], [alice])
])])
WITH_MITM([alice], [$carol_from_alice], [bob], [$alice_from_bob], [
WITH_MITM([alice], [$bob_from_alice], [carol], [$alice_from_carol], [
COMMS_EPING([bob], [bob], [alice], [alice])
COMMS_EPING([carol], [carol], [alice], [alice])
COMMS_SLIP([bob], [bob], [alice], [alice])
COMMS_SLIP([carol], [carol], [alice], [alice])
])])
wait
])
AT_CLEANUP
###--------------------------------------------------------------------------
### Adverse communication.
AT_SETUP([server retry])
AT_KEYWORDS([backoff])
export TRIPE_SLIPIF=USLIP
for i in alice bob; do (mkdir $i; cd $i; SETUPDIR([beta])); done
WITH_2TRIPES([alice], [bob], [-nslip], [-talice], [-tbob], [
## Set up the evil proxy.
mknod pipe-mitmpid p
WITH_STRACE([mitm],
[sh -c 'echo $$ >pipe-mitmpid; exec "$@"' - \
MITM -kalice/keyring.pub >mitm.out 2>mitm.err \
peer:alice:\?alice.mitm:127.0.0.1:$(cat alice/port) \
peer:bob:\?bob.mitm:127.0.0.1:$(cat bob/port) \
filt:drop:5 filt:send])&
read mitmpid &-
## Try to establish keys anyway.
AWAIT_KXDONE([alice], [alice], [bob], [bob], [
AT_CHECK([TRIPECTL -dalice ADD -cork bob INET 127.0.0.1 $alicemitm])
AT_CHECK([TRIPECTL -dbob ADD alice INET 127.0.0.1 $bobmitm])
])
## Check pinging.
COMMS_EPING([alice], [alice], [bob], [bob], [10])
COMMS_EPING([bob], [bob], [alice], [alice], [10])
## Tear down the MITM proxy.
kill $mitmpid
])
AT_CLEANUP
###--------------------------------------------------------------------------
### Key management.
AT_SETUP([server key-management])
AT_KEYWORDS([keymgmt])
export TRIPE_SLIPIF=USLIP
## Determine all of the nets and the principals.
princs=""
nets=" "
while read princ pnets; do
princs="$princs $princ"
for n in $pnets; do
case " $nets " in *" $n "*) ;; *) nets="$nets$n " ;; esac
done
done <&2 "SVCCLAIM failed: $line"
exit 1
;;
esac
echo "ok" >svc-test-running
while read line; do
set -- $line
case "$[]1,$[]3,$[]4" in
SVCJOB,test,HELP)
echo "SVCINFO try not to use this service for anything useful"
echo "SVCOK $[]2"
;;
SVCJOB,test,GOOD)
echo "SVCOK $[]2"
;;
SVCJOB,test,BAD)
echo "SVCFAIL $[]2 this-command-always-fails"
;;
SVCJOB,test,UGLY)
tag=$2
while read line; do
set -- $line
case "$[]1,$[]2,$[]3,$[]4" in
SVCCANCEL,$tag,,) break ;;
SVCJOB,*,test,ESCAPE)
echo >&2 "attempt to escape from alkatraz"
exit 1
;;
esac
done
;;
SVCJOB,test,FIRST)
firsttag=$[]2
;;
SVCJOB,test,SECOND)
echo "SVCOK $firsttag"
echo "SVCOK $[]2"
;;
SVCJOB,*)
echo "SVCFAIL $[]2 unknown-svc-command $[]4"
;;
SVCCLAIM,*)
break
;;
OK,* | INFO,*)
;;
FAIL,*)
echo "failure in service: $line" >&2
;;
esac
done
], [
TRIPECTL; echo $? >tripectl-status
]) 2>tripectl-errors &
## Wait until it starts up.
while test ! -r svc-test-running && test ! -r tripectl-status; do :; done
## Make sure it's running.
AT_CHECK([TRIPECTL SVCQUERY test],, [name=test version=1.0.0[]nl])
## Try some simple commands.
AT_CHECK([TRIPECTL SVCSUBMIT test GOOD])
AT_CHECK([TRIPECTL SVCSUBMIT test BAD], [1],,
[tripectl: this-command-always-fails[]nl])
## And now with commands in the background.
TRIPECTL_INTERACT([
TRIPECTL_COMMAND([SVCSUBMIT test GOOD], [OK])
TRIPECTL_COMMAND([SVCSUBMIT -background foo test UGLY], [BGDETACH foo])
TRIPECTL_COMMAND([BGCANCEL foo], [OK])
TRIPECTL_COMMAND([SVCSUBMIT test ESCAPE],
[FAIL unknown-svc-command ESCAPE])
])
## Out-of-order completion.
TRIPECTL_INTERACT([
TRIPECTL_COMMAND([SVCSUBMIT -background one test FIRST], [BGDETACH one])
TRIPECTL_COMMAND([SVCSUBMIT -background two test SECOND], [BGDETACH two])
TRIPECTL_COMMAND([!], [BGOK one])
TRIPECTL_COMMAND([!], [BGOK two])
])
## All done.
exit 0
])
AT_CLEANUP
###--------------------------------------------------------------------------
### Knock and bye.
AT_SETUP([server knock])
AT_KEYWORDS([knock])
export TRIPE_SLIPIF=USLIP
for i in alice bob; do (mkdir $i; cd $i; SETUPDIR([gamma])); done
WITH_2TRIPES([alice], [bob], [-nslip], [-talice], [-tbob], [
WITH_MITM([alice], [=bob_from_alice], [bob], [=alice_from_bob], [
COPROCESSES([wait-knock], [
echo WATCH +n
while read line; do
set x $line; shift
echo >&2 ">>> $line"
case "$1:$2:$3" in
OK::) ;;
NOTE:KNOCK:bob) shift 3; echo "$*" >knock-addr; break ;;
NOTE:* | TRACE:* | WARN:*) ;;
*) exit 63 ;;
esac
done
], [
TRIPECTL -dalice
])& waiter=$!
AT_CHECK([TRIPECTL -dbob ADD -knock bob -ephemeral alice INET 127.0.0.1 $alice_from_bob])
wait $waiter; waitrc=$?
AT_CHECK([echo $waitrc],, [0[]nl])
AT_CHECK_UNQUOTED([cat knock-addr],, [INET 127.0.0.1 $bob_from_alice[]nl])
AWAIT_KXDONE([alice], [alice], [bob], [bob], [
AT_CHECK([TRIPECTL -dalice ADD -ephemeral bob INET 127.0.0.1 $bob_from_alice])
])
COMMS_EPING([alice], [alice], [bob], [bob])
COMMS_SLIP([alice], [alice], [bob], [bob])
])
WITH_MITM([alice], [=new_bob_from_alice], [bob], [$alice_from_bob], [
AWAIT_KXDONE([alice], [alice], [bob], [bob], [
AT_CHECK([TRIPECTL -dalice FORCEKX bob])
AT_CHECK([TRIPECTL -dbob FORCEKX alice])
])
AT_CHECK([TRIPECTL -dbob KILL alice])
AT_CHECK([TRIPECTL -dalice LIST],, [])
])
])
AT_CLEANUP
###--------------------------------------------------------------------------
### Key-exchange ad bulk crypto round trip.
AT_SETUP([server roundtrip])
AT_KEYWORDS([roundtrip])
while read label genalg paramalg spec; do
paramopts=${spec%--*} attrs=${spec#*--}
key -kkeyring.$label add -a$paramalg -eforever $paramopts -tparam tripe-param $attrs
key -kkeyring.$label add -a$genalg -pparam -eforever -talice tripe
key -kkeyring.$label extract -f-secret keyring.$label-pub
{ sh -c "echo $$"; date; } >msg
AT_CHECK([BULKTEST -kkeyring.$label -talice \
ies-encrypt 99 "$(cat msg)nl"], [0], [stdout], [stderr])
cp msg expout; mv stdout ct
AT_CHECK([BULKTEST -kkeyring.$label -talice \
ies-decrypt 99 "$(cat ct)"], [0], [expout], [stderr])
done <