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-rw-r--r--t/lib-gpg.sh200
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diff --git a/t/lib-gpg.sh b/t/lib-gpg.sh
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+# We always set GNUPGHOME, even if no usable GPG was found, as
+#
+# - It does not hurt, and
+#
+# - we cannot set global environment variables in lazy prereqs because they are
+# executed in an eval'ed subshell that changes the working directory to a
+# temporary one.
+
+GNUPGHOME="$PWD/gpghome"
+export GNUPGHOME
+
+test_lazy_prereq GPG '
+ gpg_version=$(gpg --version 2>&1)
+ test $? != 127 || exit 1
+
+ # As said here: http://www.gnupg.org/documentation/faqs.html#q6.19
+ # the gpg version 1.0.6 did not parse trust packets correctly, so for
+ # that version, creation of signed tags using the generated key fails.
+ case "$gpg_version" in
+ "gpg (GnuPG) 1.0.6"*)
+ say "Your version of gpg (1.0.6) is too buggy for testing"
+ exit 1
+ ;;
+ *)
+ # Available key info:
+ # * Type DSA and Elgamal, size 2048 bits, no expiration date,
+ # name and email: C O Mitter <committer@example.com>
+ # * Type RSA, size 2048 bits, no expiration date,
+ # name and email: Eris Discordia <discord@example.net>
+ # No password given, to enable non-interactive operation.
+ # To generate new key:
+ # gpg --homedir /tmp/gpghome --gen-key
+ # To write armored exported key to keyring:
+ # gpg --homedir /tmp/gpghome --export-secret-keys \
+ # --armor 0xDEADBEEF >> lib-gpg/keyring.gpg
+ # gpg --homedir /tmp/gpghome --export \
+ # --armor 0xDEADBEEF >> lib-gpg/keyring.gpg
+ # To export ownertrust:
+ # gpg --homedir /tmp/gpghome --export-ownertrust \
+ # > lib-gpg/ownertrust
+ mkdir "$GNUPGHOME" &&
+ chmod 0700 "$GNUPGHOME" &&
+ (gpgconf --kill all || : ) &&
+ gpg --homedir "${GNUPGHOME}" --import \
+ "$TEST_DIRECTORY"/lib-gpg/keyring.gpg &&
+ gpg --homedir "${GNUPGHOME}" --import-ownertrust \
+ "$TEST_DIRECTORY"/lib-gpg/ownertrust &&
+ gpg --homedir "${GNUPGHOME}" --update-trustdb &&
+ gpg --homedir "${GNUPGHOME}" </dev/null >/dev/null \
+ --sign -u committer@example.com
+ ;;
+ esac
+'
+
+test_lazy_prereq GPG2 '
+ gpg_version=$(gpg --version 2>&1)
+ test $? != 127 || exit 1
+
+ case "$gpg_version" in
+ "gpg (GnuPG) "[01].*)
+ say "This test requires a GPG version >= v2.0.0"
+ exit 1
+ ;;
+ *)
+ (gpgconf --kill all || : ) &&
+ gpg --homedir "${GNUPGHOME}" --import \
+ "$TEST_DIRECTORY"/lib-gpg/keyring.gpg &&
+ gpg --homedir "${GNUPGHOME}" --import-ownertrust \
+ "$TEST_DIRECTORY"/lib-gpg/ownertrust &&
+ gpg --homedir "${GNUPGHOME}" </dev/null >/dev/null \
+ --sign -u committer@example.com
+ ;;
+ esac
+'
+
+test_lazy_prereq GPGSM '
+ test_have_prereq GPG &&
+ # Available key info:
+ # * see t/lib-gpg/gpgsm-gen-key.in
+ # To generate new certificate:
+ # * no passphrase
+ # gpgsm --homedir /tmp/gpghome/ \
+ # -o /tmp/gpgsm.crt.user \
+ # --generate-key \
+ # --batch t/lib-gpg/gpgsm-gen-key.in
+ # To import certificate:
+ # gpgsm --homedir /tmp/gpghome/ \
+ # --import /tmp/gpgsm.crt.user
+ # To export into a .p12 we can later import:
+ # gpgsm --homedir /tmp/gpghome/ \
+ # -o t/lib-gpg/gpgsm_cert.p12 \
+ # --export-secret-key-p12 "committer@example.com"
+ echo | gpgsm --homedir "${GNUPGHOME}" \
+ --passphrase-fd 0 --pinentry-mode loopback \
+ --import "$TEST_DIRECTORY"/lib-gpg/gpgsm_cert.p12 &&
+
+ gpgsm --homedir "${GNUPGHOME}" -K --with-colons |
+ awk -F ":" "/^fpr:/ {printf \"%s S relax\\n\", \$10}" \
+ >"${GNUPGHOME}/trustlist.txt" &&
+ (gpgconf --reload all || : ) &&
+
+ echo hello | gpgsm --homedir "${GNUPGHOME}" >/dev/null \
+ -u committer@example.com -o /dev/null --sign -
+'
+
+test_lazy_prereq RFC1991 '
+ test_have_prereq GPG &&
+ echo | gpg --homedir "${GNUPGHOME}" -b --rfc1991 >/dev/null
+'
+
+GPGSSH_KEY_PRIMARY="${GNUPGHOME}/ed25519_ssh_signing_key"
+GPGSSH_KEY_SECONDARY="${GNUPGHOME}/rsa_2048_ssh_signing_key"
+GPGSSH_KEY_UNTRUSTED="${GNUPGHOME}/untrusted_ssh_signing_key"
+GPGSSH_KEY_EXPIRED="${GNUPGHOME}/expired_ssh_signing_key"
+GPGSSH_KEY_NOTYETVALID="${GNUPGHOME}/notyetvalid_ssh_signing_key"
+GPGSSH_KEY_TIMEBOXEDVALID="${GNUPGHOME}/timeboxed_valid_ssh_signing_key"
+GPGSSH_KEY_TIMEBOXEDINVALID="${GNUPGHOME}/timeboxed_invalid_ssh_signing_key"
+GPGSSH_KEY_WITH_PASSPHRASE="${GNUPGHOME}/protected_ssh_signing_key"
+GPGSSH_KEY_ECDSA="${GNUPGHOME}/ecdsa_ssh_signing_key"
+GPGSSH_KEY_PASSPHRASE="super_secret"
+GPGSSH_ALLOWED_SIGNERS="${GNUPGHOME}/ssh.all_valid.allowedSignersFile"
+
+GPGSSH_GOOD_SIGNATURE_TRUSTED='Good "git" signature for'
+GPGSSH_GOOD_SIGNATURE_UNTRUSTED='Good "git" signature with'
+GPGSSH_KEY_NOT_TRUSTED="No principal matched"
+GPGSSH_BAD_SIGNATURE="Signature verification failed"
+
+test_lazy_prereq GPGSSH '
+ ssh_version=$(ssh-keygen -Y find-principals -n "git" 2>&1)
+ test $? != 127 || exit 1
+ echo $ssh_version | grep -q "find-principals:missing signature file"
+ test $? = 0 || exit 1;
+
+ # Setup some keys and an allowed signers file
+ mkdir -p "${GNUPGHOME}" &&
+ chmod 0700 "${GNUPGHOME}" &&
+ (setfacl -k "${GNUPGHOME}" 2>/dev/null || true) &&
+ ssh-keygen -t ed25519 -N "" -C "git ed25519 key" -f "${GPGSSH_KEY_PRIMARY}" >/dev/null &&
+ ssh-keygen -t rsa -b 2048 -N "" -C "git rsa2048 key" -f "${GPGSSH_KEY_SECONDARY}" >/dev/null &&
+ ssh-keygen -t ed25519 -N "${GPGSSH_KEY_PASSPHRASE}" -C "git ed25519 encrypted key" -f "${GPGSSH_KEY_WITH_PASSPHRASE}" >/dev/null &&
+ ssh-keygen -t ecdsa -N "" -f "${GPGSSH_KEY_ECDSA}" >/dev/null &&
+ ssh-keygen -t ed25519 -N "" -C "git ed25519 key" -f "${GPGSSH_KEY_UNTRUSTED}" >/dev/null &&
+
+ cat >"${GPGSSH_ALLOWED_SIGNERS}" <<-EOF &&
+ "principal with number 1" $(cat "${GPGSSH_KEY_PRIMARY}.pub")"
+ "principal with number 2" $(cat "${GPGSSH_KEY_SECONDARY}.pub")"
+ "principal with number 3" $(cat "${GPGSSH_KEY_WITH_PASSPHRASE}.pub")"
+ "principal with number 4" $(cat "${GPGSSH_KEY_ECDSA}.pub")"
+ EOF
+
+ # Verify if at least one key and ssh-keygen works as expected
+ echo "testpayload" |
+ ssh-keygen -Y sign -n "git" -f "${GPGSSH_KEY_PRIMARY}" >gpgssh_prereq.sig &&
+ ssh-keygen -Y find-principals -f "${GPGSSH_ALLOWED_SIGNERS}" -s gpgssh_prereq.sig &&
+ echo "testpayload" |
+ ssh-keygen -Y verify -n "git" -f "${GPGSSH_ALLOWED_SIGNERS}" -I "principal with number 1" -s gpgssh_prereq.sig
+'
+
+test_lazy_prereq GPGSSH_VERIFYTIME '
+ test_have_prereq GPGSSH &&
+ # Check if ssh-keygen has a verify-time option by passing an invalid date to it
+ ssh-keygen -Overify-time=INVALID -Y check-novalidate -n "git" -s doesnotmatter 2>&1 | grep -q -F "Invalid \"verify-time\"" &&
+
+ # Set up keys with key lifetimes
+ ssh-keygen -t ed25519 -N "" -C "timeboxed valid key" -f "${GPGSSH_KEY_TIMEBOXEDVALID}" >/dev/null &&
+ key_valid=$(cat "${GPGSSH_KEY_TIMEBOXEDVALID}.pub") &&
+ ssh-keygen -t ed25519 -N "" -C "timeboxed invalid key" -f "${GPGSSH_KEY_TIMEBOXEDINVALID}" >/dev/null &&
+ key_invalid=$(cat "${GPGSSH_KEY_TIMEBOXEDINVALID}.pub") &&
+ ssh-keygen -t ed25519 -N "" -C "expired key" -f "${GPGSSH_KEY_EXPIRED}" >/dev/null &&
+ key_expired=$(cat "${GPGSSH_KEY_EXPIRED}.pub") &&
+ ssh-keygen -t ed25519 -N "" -C "not yet valid key" -f "${GPGSSH_KEY_NOTYETVALID}" >/dev/null &&
+ key_notyetvalid=$(cat "${GPGSSH_KEY_NOTYETVALID}.pub") &&
+
+ # Timestamps outside of test_tick span
+ ts2005a=20050401000000 ts2005b=200504020000 &&
+ # Timestamps within test_tick span
+ ts2005c=20050407000000 ts2005d=200504100000 &&
+ # Definitely not yet valid / expired timestamps
+ ts2000=20000101000000 ts2999=29990101000000 &&
+
+ cat >>"${GPGSSH_ALLOWED_SIGNERS}" <<-EOF &&
+ "timeboxed valid key" valid-after="$ts2005c",valid-before="$ts2005d" $key_valid"
+ "timeboxed invalid key" valid-after="$ts2005a",valid-before="$ts2005b" $key_invalid"
+ "principal with expired key" valid-before="$ts2000" $key_expired"
+ "principal with not yet valid key" valid-after="$ts2999" $key_notyetvalid"
+ EOF
+
+ # and verify ssh-keygen verifies the key lifetime
+ echo "testpayload" |
+ ssh-keygen -Y sign -n "git" -f "${GPGSSH_KEY_EXPIRED}" >gpgssh_verifytime_prereq.sig &&
+ ! (ssh-keygen -Y verify -n "git" -f "${GPGSSH_ALLOWED_SIGNERS}" -I "principal with expired key" -s gpgssh_verifytime_prereq.sig)
+'
+
+sanitize_pgp() {
+ perl -ne '
+ /^-----END PGP/ and $in_pgp = 0;
+ print unless $in_pgp;
+ /^-----BEGIN PGP/ and $in_pgp = 1;
+ '
+}
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