#!/usr/bin/env bash # Tests to ensure that the monkeysphere is working # # unset MONKEYSPHERE_TEST_NO_EXAMINE to get a prompt to examine the # test state after failure. # Authors: # Daniel Kahn Gillmor # Jameson Rollins # Micah Anderson # # Copyright: © 2008-2010 # License: GPL v3 or later # these tests should all be able to run as a non-privileged user. # put all the test output to stdout exec 2>&1 # all subcommands in this script should complete without failure: set -e # piped commands should return the code of the first non-zero return set -o pipefail # make sure the TESTDIR is an absolute path, not a relative one. export TESTDIR=$(cd $(dirname "$0") && pwd) source "$TESTDIR"/common ## make sure that the right tools are installed to run the test. the ## test has *more* requirements than plain ol' monkeysphere: [ -f /usr/sbin/sshd ] || { echo "You must have sshd installed to run this test." ; exit 1; } which socat >/dev/null || { echo "You must have socat installed to run this test." ; exit 1; } perl -MCrypt::OpenSSL::RSA -e 1 2>/dev/null || { echo "You must have the perl module Crypt::OpenSSL::RSA installed to run this test. On debian-derived systems, you can set this up with: apt-get install libcrypt-openssl-rsa-perl" ; exit 1; } perl -MDigest::SHA -e 1 2>/dev/null || { echo "You must have the perl module Digest::SHA installed to run this test. On debian-derived systems, you can set this up with: apt-get install libdigest-sha-perl" ; exit 1; } ## FIXME: other checks? ###################################################################### ### FUNCTIONS # gpg command for test admin user gpgadmin() { chmod 0700 "$TEMPDIR"/admin "$TEMPDIR"/admin/.gnupg GNUPGHOME="$TEMPDIR"/admin/.gnupg gpg --no-tty "$@" } # test ssh connection # first argument is expected return code from ssh connection ssh_test() { local RETURN=0 local remote_command=${1:-true} umask 0077 CODE=${2:-0} # start the ssh daemon on the socket echo "##### starting ssh server..." socat EXEC:"/usr/sbin/sshd -f ${SSHD_CONFIG} -i -D -e" "UNIX-LISTEN:${SOCKET}" 2> "$TEMPDIR"/sshd.log & SSHD_PID="$!" # wait until the socket is created before continuing while [ ! -S "$SOCKET" ] ; do sleep 1 done # make a client connection to the socket echo "##### starting ssh client..." ssh-agent bash -c \ "monkeysphere subkey-to-ssh-agent && ssh -F $TEMPDIR/testuser/.ssh/config ${target_hostname:-testhost.example} $remote_command" \ || RETURN="$?" # kill the sshd process if it's still running kill "$SSHD_PID" || true wait SSHD_PID= if [ "$RETURN" = "$CODE" ] ; then echo "##### ssh connection test PASSED. returned: $RETURN" return 0 else echo "##### ssh connection test FAILED. returned: $RETURN, expected: $CODE" return 1 fi } # invoke this instead of ssh_test() if you want this test to be # skipped when the working directory has bad permissions. ssh_good_perm_test() { if [ "$TEMPDIR_PERMISSIONS_SAFE" = no ] ; then echo "WARNING!!! Test SKIPPED because we are running in an unsafe working directory." else ssh_test "$@" fi } SSHD_PID= ## setup trap trap failed_cleanup EXIT ###################################################################### ### SETUP VARIABLES ## set up some variables to ensure that we're operating strictly in ## the tests, not system-wide: # set up temp dir # NOTE: /tmp can not be used as the temp dir here, since the # permissions on /tmp are usually such that they will not pass the # monkeysphere/ssh path permission checking. If you need to use a # different location than the current source, please set $TMPDIR # somewhere with tighter permissions. mkdir -p "$TESTDIR"/tmp TEMPDIR=$(mktemp -d "${TMPDIR:-$TESTDIR/tmp}/monkeyspheretest.XXXXXXX") # Use the local copy of executables first, instead of system ones. # This should help us test without installing. export PATH="$TESTDIR"/../src:"$PATH" export MONKEYSPHERE_SYSDATADIR="$TEMPDIR" export MONKEYSPHERE_SYSCONFIGDIR="$TEMPDIR" export MONKEYSPHERE_SYSSHAREDIR="$TESTDIR"/../src/share export MONKEYSPHERE_MONKEYSPHERE_USER=$(whoami) HOST_KEY_FILE="$MONKEYSPHERE_SYSCONFIGDIR"/host_keys.pub.pgp export MONKEYSPHERE_CHECK_KEYSERVER=false # example.org does not respond to the HKP port, so this should cause # any keyserver connection attempts that do happen (they shouldn't!) # to hang, so we'll notice them: export MONKEYSPHERE_KEYSERVER=example.org export MONKEYSPHERE_LOG_LEVEL=DEBUG export MONKEYSPHERE_CORE_KEYLENGTH=1024 export MONKEYSPHERE_PROMPT=false # unset SUBKEYS_FOR_AGENT variable which, if set, would confuse the # into trying to use the user's key, instead of the testuser's key unset MONKEYSPHERE_SUBKEYS_FOR_AGENT export SSHD_CONFIG="$TEMPDIR"/sshd_config export SOCKET="$TEMPDIR"/ssh-socket # Make sure $DISPLAY is set to convince ssh and monkeysphere to fall # back on $SSH_ASKPASS. Make sure it's not set to the current actual # $DISPLAY (if one exists) because this test suite should not be doing # *anything* with any running X11 session. export DISPLAY=monkeys ## we cannot do proper directory permissions checking if the current ## working directory has unsatisfactory permissions: if "$MONKEYSPHERE_SYSSHAREDIR"/checkperms $(whoami) "$TEMPDIR"; then echo "Permissions on temporary directory '$TEMPDIR' are OK for permissions checks." TEMPDIR_PERMISSIONS_SAFE=yes else cat <> "$TESTHOME"/.ssh/config UserKnownHostsFile $TESTHOME/.ssh/known_hosts IdentityFile $TESTHOME/.ssh/no-such-identity ProxyCommand $TESTHOME/.ssh/proxy-command %h %p $SOCKET EOF cat <> "$MONKEYSPHERE_HOME"/monkeysphere.conf KNOWN_HOSTS=$TESTHOME/.ssh/known_hosts EOF get_gpg_prng_arg >> "$GNUPGHOME"/gpg.conf echo echo "##################################################" echo "### configuring admin home..." (cd "$TESTDIR"/home && find admin | cpio -pdu "$TEMPDIR") # set up sshd echo echo "##################################################" echo "### configuring sshd..." cp "$TESTDIR"/etc/ssh/sshd_config "$SSHD_CONFIG" # write the sshd_config cat <> "$SSHD_CONFIG" HostKey ${MONKEYSPHERE_SYSDATADIR}/ssh_host_rsa_key AuthorizedKeysFile ${MONKEYSPHERE_SYSDATADIR}/authorized_keys/%u EOF # disable sshd's strict permissions settings so that some tests can # complete when running under a dubious path: if [ "$TEMPDIR_PERMISSIONS_SAFE" != yes ] ; then cat <> "$SSHD_CONFIG" StrictModes no EOF fi ###################################################################### ### SERVER HOST SETUP # import host key echo echo "##################################################" echo "### import host key..." ssh-keygen -b 1024 -t rsa -N '' -f "$TEMPDIR"/ssh_host_rsa_key monkeysphere-host import-key "$TEMPDIR"/ssh_host_rsa_key ssh://testhost.example echo echo "##################################################" echo "### getting host key fingerprint..." SSHHOSTKEYID=$( monkeysphere-host show-keys | grep '^OpenPGP fingerprint: ' | cut -f3 -d\ ) echo "$SSHHOSTKEYID" # change host key expiration echo echo "##################################################" echo "### setting host key expiration..." monkeysphere-host set-expire 1 # FIXME: how do we check that the expiration has really been set? # certify host key with the "Admin's Key". # (this would normally be done via keyservers) echo echo "##################################################" echo "### certifying server host key..." < "$HOST_KEY_FILE" gpgadmin --import echo y | gpgadmin --command-fd 0 --sign-key "$SSHHOSTKEYID" # FIXME: add revoker? # FIXME: how can we test publish-key without flooding junk into the # keyservers? # FIXME: should we run "diagnostics" here to test setup? ###################################################################### ### SERVER AUTHENTICATION SETUP # set up monkeysphere authentication echo echo "##################################################" echo "### setup monkeysphere authentication..." cp "$TESTDIR"/etc/monkeysphere/monkeysphere-authentication.conf "$TEMPDIR"/ cat <> "$TEMPDIR"/monkeysphere-authentication.conf AUTHORIZED_USER_IDS="$MONKEYSPHERE_HOME/authorized_user_ids" EOF monkeysphere-authentication setup get_gpg_prng_arg >> "$MONKEYSPHERE_SYSDATADIR"/authentication/sphere/gpg.conf # add admin as identity certifier for testhost.example echo echo "##################################################" echo "### adding admin as certifier..." monkeysphere-authentication add-id-certifier "$TEMPDIR"/admin/.gnupg/pubkey.gpg echo echo "##################################################" echo "### list certifiers..." monkeysphere-authentication list-certifiers # FIXME: should we run "diagnostics" here to test setup? ###################################################################### ### TESTUSER SETUP # generate an auth subkey for the test user that expires in 2 days echo echo "##################################################" echo "### generating key for testuser..." monkeysphere gen-subkey # add server key to testuser keychain echo echo "##################################################" echo "### export server key to testuser..." gpgadmin --armor --export "$SSHHOSTKEYID" | gpg --import # teach the "server" about the testuser's key echo echo "##################################################" echo "### export testuser key to server..." gpg --export testuser | monkeysphere-authentication gpg-cmd --import # update authorized_keys for user echo echo "##################################################" echo "### update server authorized_keys file for this testuser..." monkeysphere-authentication update-users $(whoami) # FIXME: this is maybe not failing properly for: # ms: improper group or other writability on path '/tmp'. ###################################################################### ### TESTS ## see whether keys-for-userid works from the client's perspective: echo echo "##################################################" echo "### testing monkeysphere keys-for-userid ..." diff -q <( monkeysphere keys-for-userid ssh://testhost.example ) <( cut -f1,2 -d' ' < "$TEMPDIR"/ssh_host_rsa_key.pub ) # connect to test sshd, using monkeysphere ssh-proxycommand to verify # the identity before connection. This should work in both directions! echo echo "##################################################" echo "### ssh connection test for success..." ssh_test true # Make sure it works if there is "armor" written in gpg.conf # add other weirdnesses here as they come up. echo echo "##################################################" echo "### testing functionality in the face of unusual gpg.conf settings..." echo 'armor' >> "$GNUPGHOME"/gpg.conf ssh_test true # remove the testuser's authorized_user_ids file, update, and make # sure that the ssh authentication FAILS echo echo "##################################################" echo "### removing testuser authorized_user_ids and updating..." mv "$TESTHOME"/.monkeysphere/authorized_user_ids{,.bak} monkeysphere-authentication update-users $(whoami) echo echo "##################################################" echo "### ssh connection test for failure..." ssh_test true 255 mv "$TESTHOME"/.monkeysphere/authorized_user_ids{.bak,} # put improper permissions on authorized_user_ids file, update, and # make sure ssh authentication FAILS echo echo "##################################################" echo "### setting group writability on authorized_user_ids and updating..." chmod g+w "$TESTHOME"/.monkeysphere/authorized_user_ids monkeysphere-authentication update-users $(whoami) echo echo "##################################################" echo "### ssh connection test for failure..." ssh_good_perm_test true 255 chmod g-w "$TESTHOME"/.monkeysphere/authorized_user_ids echo echo "##################################################" echo "### setting other writability on authorized_user_ids and updating..." chmod o+w "$TESTHOME"/.monkeysphere/authorized_user_ids monkeysphere-authentication update-users $(whoami) echo echo "##################################################" echo "### ssh connection test for failure..." ssh_good_perm_test true 255 chmod o-w "$TESTHOME"/.monkeysphere/authorized_user_ids monkeysphere-authentication update-users $(whoami) # test symlinks echo echo "##################################################" echo "### setup for symlink tests..." cp -a "$TESTHOME"/.monkeysphere{,.linktest} echo echo "##################################################" echo "### make authorized_user_ids an absolute symlink and updating..." mv "$TESTHOME"/.monkeysphere/authorized_user_ids{,.bak} ln -s "$TESTHOME"/.monkeysphere{.linktest,}/authorized_user_ids monkeysphere-authentication update-users $(whoami) echo echo "##################################################" echo "### ssh connection test for success..." ssh_test true echo echo "##################################################" echo "### create bad permissions on link dir and updating..." chmod o+w "$TESTHOME"/.monkeysphere.linktest monkeysphere-authentication update-users $(whoami) echo echo "##################################################" echo "### ssh connection test for failure..." ssh_good_perm_test true 255 chmod o-w "$TESTHOME"/.monkeysphere.linktest echo echo "##################################################" echo "### make authorized_user_ids a relative symlink and updating..." ln -sf ../.monkeysphere.linktest/authorized_user_ids "$TESTHOME"/.monkeysphere/authorized_user_ids monkeysphere-authentication update-users $(whoami) echo echo "##################################################" echo "### ssh connection test for success..." ssh_test true echo echo "##################################################" echo "### create bad permissions on link dir updating..." chmod o+w "$TESTHOME"/.monkeysphere.linktest monkeysphere-authentication update-users $(whoami) echo echo "##################################################" echo "### ssh connection test for failure..." ssh_good_perm_test true 255 chmod o-w "$TESTHOME"/.monkeysphere.linktest # FIXME: implement check of link path, and uncomment this test # echo # echo "##################################################" # echo "### create bad permissions on link dir and updating..." # chmod o+w "$TESTHOME"/.monkeysphere # monkeysphere-authentication update-users $(whoami) # echo # echo "##################################################" # echo "### ssh connection test for failure..." # ssh_good_perm_test true 255 # chmod o-w "$TESTHOME"/.monkeysphere rm "$TESTHOME"/.monkeysphere/authorized_user_ids mv "$TESTHOME"/.monkeysphere/authorized_user_ids{.bak,} echo echo "##################################################" echo "### make .monkeysphere directory an absolute symlink and updating..." mv "$TESTHOME"/.monkeysphere{,.bak} ln -s "$TESTHOME"/.monkeysphere{.linktest,} monkeysphere-authentication update-users $(whoami) echo echo "##################################################" echo "### ssh connection test for success..." ssh_test true echo echo "##################################################" echo "### create bad permissions on link dir and updating..." chmod o+w "$TESTHOME"/.monkeysphere.linktest monkeysphere-authentication update-users $(whoami) echo echo "##################################################" echo "### ssh connection test for failure..." ssh_good_perm_test true 255 chmod o-w "$TESTHOME"/.monkeysphere.linktest echo echo "##################################################" echo "### make .monkeysphere directory a relative symlink and updating..." ln -sfn .monkeysphere.linktest "$TESTHOME"/.monkeysphere monkeysphere-authentication update-users $(whoami) echo echo "##################################################" echo "### ssh connection test for success..." ssh_test true echo echo "##################################################" echo "### create bad permissions on link dir updating..." chmod o+w "$TESTHOME"/.monkeysphere.linktest monkeysphere-authentication update-users $(whoami) echo echo "##################################################" echo "### ssh connection test for failure..." ssh_good_perm_test true 255 chmod o-w "$TESTHOME"/.monkeysphere.linktest rm "$TESTHOME"/.monkeysphere mv "$TESTHOME"/.monkeysphere{.bak,} # ensure we're back to normal: echo echo "##################################################" echo "### making sure we are back to normal..." monkeysphere-authentication update-users $(whoami) ssh_test true echo echo "##################################################" echo "### ssh connection test directly to 'testhost2.example' without new name..." target_hostname=testhost2.example ssh_test true 255 echo echo "##################################################" echo "### add servicename, certify by admin, import by user..." monkeysphere-host add-servicename ssh://testhost2.example <"$HOST_KEY_FILE" gpgadmin --import printf "y\ny\n" | gpgadmin --command-fd 0 --sign-key "$SSHHOSTKEYID" echo echo "##################################################" echo "### ssh connection test with hostname 'testhost2.example' added..." gpgadmin --export "$SSHHOSTKEYID" | gpg --import gpg --check-trustdb ssh_test true echo echo "##################################################" echo "### ssh connection test directly to 'testhost2.example' ..." gpg --import <"$HOST_KEY_FILE" gpg --check-trustdb target_hostname=testhost2.example ssh_test true echo echo "##################################################" echo "### ssh connection test for failure with 'testhost2.example' revoked..." monkeysphere-host revoke-servicename ssh://testhost2.example gpg --import <"$HOST_KEY_FILE" gpg --check-trustdb target_hostname=testhost2.example ssh_test true 255 # FIXME: addtest: remove admin as id-certifier and check ssh failure # FIXME: addtest: how do we test that set-expire makes sense after new # servicenames have been added? # test to make sure things are OK after the previous tests: echo echo "##################################################" echo "### settings reset, updating..." monkeysphere-authentication update-users $(whoami) echo echo "##################################################" echo "### ssh connection test for success..." ssh_test true echo echo "##################################################" echo "### Testing TLS setup..." openssl req -config "$TESTDIR"/openssl.cnf -x509 -newkey rsa:1024 -subj '/DC=example/DC=testhost/CN=testhost.example/' -days 3 -keyout "$TEMPDIR"/tls_key.pem -nodes >"$TEMPDIR"/tls_cert.pem monkeysphere-host import-key "$TEMPDIR"/tls_key.pem https://testhost.example # FIXME: how can we test this via an https client? # We don't currently provide one. # FIXME: should we test other monkeysphere-host operations somehow now # that we have more than one key in the host keyring? echo echo "##################################################" echo "### revoking ssh host key..." # generate the revocation certificate and feed it directly to the test # user's keyring (we're not publishing to the keyservers) monkeysphere-host revoke-key "$SSHHOSTKEYID" | gpg --import echo echo "##################################################" echo "### ssh connection test for failure..." ssh_test true 255 ###################################################################### trap - EXIT echo echo "##################################################" echo " Monkeysphere basic tests completed successfully!" echo "##################################################" cleanup