bin/remote: Rename list-gpg-keys to gpg-list-keys

As pointed out in the original review, `gpg-list-keys` fits better
alongside the existing `gpg-import`.

Changes were done with:

```
git grep -l list-gpg-keys | xargs sed -i 's/list-gpg-keys/gpg-list-keys/'
for src in $(git ls-files '*list-gpg-keys*'); do
  dst=${src/list-gpg-keys/gpg-list-keys}
  git mv "$src" "$dst"
done
```

1 files changed, 152 insertions, 0 deletions

diff --git a/tests/test-remote-gpg-list-keys.sh b/tests/test-remote-gpg-list-keys.sh
new file mode 100755
index 00000000..51b60084
--- /dev/null
+++ b/tests/test-remote-gpg-list-keys.sh
@@ -0,0 +1,152 @@
+#!/bin/bash
+#
+# Copyright © 2021 Endless OS Foundation LLC
+#
+# SPDX-License-Identifier: LGPL-2.0+
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2 of the License, or (at your option) any later version.
+#
+# This library 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
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the
+# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+# Boston, MA 02111-1307, USA.
+
+set -euo pipefail
+
+. $(dirname $0)/libtest.sh
+
+# We don't want OSTREE_GPG_HOME used for most of these tests.
+emptydir=${test_tmpdir}/empty
+trusteddir=${OSTREE_GPG_HOME}
+mkdir ${emptydir}
+OSTREE_GPG_HOME=${emptydir}
+
+# Key listings show dates using the local timezone, so specify UTC for
+# consistency.
+export TZ=UTC
+
+# Some tests require an appropriate gpg
+num_non_gpg_tests=5
+num_gpg_tests=2
+num_tests=$((num_non_gpg_tests + num_gpg_tests))
+
+echo "1..${num_tests}"
+
+setup_test_repository "archive"
+
+cd ${test_tmpdir}
+${OSTREE} remote add R1 http://example.com/repo
+
+# No remote keyring should list no keys.
+${OSTREE} remote gpg-list-keys R1 > result
+assert_file_empty result
+
+echo "ok remote no keyring"
+
+# Make the global keyring available and make sure there are still no
+# keys found for a specified remote.
+OSTREE_GPG_HOME=${trusteddir}
+${OSTREE} remote gpg-list-keys R1 > result
+OSTREE_GPG_HOME=${emptydir}
+assert_file_empty result
+
+echo "ok remote with global keyring"
+
+# Import a key and check that it's listed
+${OSTREE} remote gpg-import --keyring ${TEST_GPG_KEYHOME}/key1.asc R1
+${OSTREE} remote gpg-list-keys R1 > result
+cat > expected <<"EOF"
+Key: 5E65DE75AB1C501862D476347FCA23D8472CDAFA
+  Created: Tue Sep 10 02:29:42 2013
+  UID: Ostree Tester <test@test.com>
+  Advanced update URL: https://openpgpkey.test.com/.well-known/openpgpkey/test.com/hu/iffe93qcsgp4c8ncbb378rxjo6cn9q6u?l=test
+  Direct update URL: https://test.com/.well-known/openpgpkey/hu/iffe93qcsgp4c8ncbb378rxjo6cn9q6u?l=test
+  Subkey: CC47B2DFB520AEF231180725DF20F58B408DEA49
+    Created: Tue Sep 10 02:29:42 2013
+EOF
+assert_files_equal result expected
+
+echo "ok remote with keyring"
+
+# Check the global keys with no keyring
+OSTREE_GPG_HOME=${emptydir}
+${OSTREE} remote gpg-list-keys > result
+assert_file_empty result
+
+echo "ok global no keyring"
+
+# Now check the global keys with a keyring
+OSTREE_GPG_HOME=${trusteddir}
+${OSTREE} remote gpg-list-keys > result
+OSTREE_GPG_HOME=${emptydir}
+cat > expected <<"EOF"
+Key: 5E65DE75AB1C501862D476347FCA23D8472CDAFA
+  Created: Tue Sep 10 02:29:42 2013
+  UID: Ostree Tester <test@test.com>
+  Advanced update URL: https://openpgpkey.test.com/.well-known/openpgpkey/test.com/hu/iffe93qcsgp4c8ncbb378rxjo6cn9q6u?l=test
+  Direct update URL: https://test.com/.well-known/openpgpkey/hu/iffe93qcsgp4c8ncbb378rxjo6cn9q6u?l=test
+  Subkey: CC47B2DFB520AEF231180725DF20F58B408DEA49
+    Created: Tue Sep 10 02:29:42 2013
+Key: 7B3B1020D74479687FDB2273D8228CFECA950D41
+  Created: Tue Mar 17 14:00:32 2015
+  UID: Ostree Tester II <test2@test.com>
+  Advanced update URL: https://openpgpkey.test.com/.well-known/openpgpkey/test.com/hu/nnxwsxno46ap6hw7fgphp68j76egpfa9?l=test2
+  Direct update URL: https://test.com/.well-known/openpgpkey/hu/nnxwsxno46ap6hw7fgphp68j76egpfa9?l=test2
+  Subkey: 1EFA95C06EB1EB91754575E004B69C2560D53993
+    Created: Tue Mar 17 14:00:32 2015
+Key: 7D29CF060B8269CDF63BFBDD0D15FAE7DF444D67
+  Created: Tue Mar 17 14:01:05 2015
+  UID: Ostree Tester III <test3@test.com>
+  Advanced update URL: https://openpgpkey.test.com/.well-known/openpgpkey/test.com/hu/8494gyqhmrcs6gn38tn6kgjexet117cj?l=test3
+  Direct update URL: https://test.com/.well-known/openpgpkey/hu/8494gyqhmrcs6gn38tn6kgjexet117cj?l=test3
+  Subkey: 0E45E48CBF7B360C0E04443E0C601A7402416340
+    Created: Tue Mar 17 14:01:05 2015
+EOF
+assert_files_equal result expected
+
+echo "ok global with keyring"
+
+# Tests checking for expiration and revocation listings require gpg.
+GPG=$(which_gpg)
+if [ -z "${GPG}" ]; then
+    # Print a skip message per skipped test
+    for (( i = 0; i < num_gpg_tests; i++ )); do
+        echo "ok # SKIP this test requires gpg"
+    done
+else
+    # The GPG private keyring in gpghome is in the older secring.gpg
+    # format, but we're likely using a newer gpg. Normally it's
+    # implicitly migrated to the newer format, but this test hasn't
+    # signed anything, so the private keys haven't been loaded. Force
+    # the migration by listing the private keys.
+    ${GPG} --homedir=${test_tmpdir}/gpghome -K >/dev/null
+
+    # Expire key1, wait for it to be expired and re-import it.
+    ${GPG} --homedir=${test_tmpdir}/gpghome --quick-set-expire ${TEST_GPG_KEYFPR_1} seconds=1
+    sleep 2
+    ${GPG} --homedir=${test_tmpdir}/gpghome --armor --export ${TEST_GPG_KEYID_1} > ${test_tmpdir}/key1expired.asc
+    ${OSTREE} remote gpg-import --keyring ${test_tmpdir}/key1expired.asc R1
+    ${OSTREE} remote gpg-list-keys R1 > result
+    assert_file_has_content result "^  Expired:"
+
+    echo "ok remote expired key"
+
+    # Revoke key1 and re-import it.
+    ${GPG} --homedir=${TEST_GPG_KEYHOME} --import ${TEST_GPG_KEYHOME}/revocations/key1.rev
+    ${GPG} --homedir=${test_tmpdir}/gpghome --armor --export ${TEST_GPG_KEYID_1} > ${test_tmpdir}/key1revoked.asc
+    ${OSTREE} remote gpg-import --keyring ${test_tmpdir}/key1revoked.asc R1
+    ${OSTREE} remote gpg-list-keys R1 > result
+    assert_file_has_content result "^Key: 5E65DE75AB1C501862D476347FCA23D8472CDAFA (revoked)"
+    assert_file_has_content result "^  UID: Ostree Tester <test@test.com> (revoked)"
+    assert_file_has_content result "^  Subkey: CC47B2DFB520AEF231180725DF20F58B408DEA49 (revoked)"
+
+    echo "ok remote revoked key"
+fi