GPG_CMD="gpg --ignore-time-conflict --no-options --no-default-keyring"
-# gpg needs a trustdb to function, but it can't be invalid (not even empty)
-# so we create a temporary directory to store our fresh readable trustdb in
-TRUSTDBDIR="$(mktemp -d)"
-CURRENTTRAP="${CURRENTTRAP} rm -rf '${TRUSTDBDIR}';"
+# gpg needs (in different versions more or less) files to function correctly,
+# so we give it its own homedir and generate some valid content for it
+GPGHOMEDIR="$(mktemp -d)"
+CURRENTTRAP="${CURRENTTRAP} rm -rf '${GPGHOMEDIR}';"
trap "${CURRENTTRAP}" 0 HUP INT QUIT ILL ABRT FPE SEGV PIPE TERM
-chmod 700 "$TRUSTDBDIR"
-# We also don't use a secret keyring, of course, but gpg panics and
+chmod 700 "$GPGHOMEDIR"
+# We don't use a secret keyring, of course, but gpg panics and
# implodes if there isn't one available - and writeable for imports
-SECRETKEYRING="${TRUSTDBDIR}/secring.gpg"
+SECRETKEYRING="${GPGHOMEDIR}/secring.gpg"
touch $SECRETKEYRING
-GPG_CMD="$GPG_CMD --secret-keyring $SECRETKEYRING"
-GPG_CMD="$GPG_CMD --trustdb-name ${TRUSTDBDIR}/trustdb.gpg"
-
-# now create the trustdb with an (empty) dummy keyring
-$GPG_CMD --quiet --check-trustdb --keyring $SECRETKEYRING
-# and make sure that gpg isn't trying to update the file
+GPG_CMD="$GPG_CMD --homedir $GPGHOMEDIR"
+# create the trustdb with an (empty) dummy keyring
+# older gpgs required it, newer gpgs even warn that it isn't needed,
+# but require it nonetheless for some commands, so we just play safe
+# here for the foreseeable future and create a dummy one
+$GPG_CMD --quiet --check-trustdb --keyring $SECRETKEYRING >/dev/null 2>&1
+# tell gpg that it shouldn't try to maintain a trustdb file
GPG_CMD="$GPG_CMD --no-auto-check-trustdb --trust-model always"
GPG="$GPG_CMD"
+APT_DIR="/"
+eval $(apt-config shell APT_DIR Dir)
+
MASTER_KEYRING='&keyring-master-filename;'
eval $(apt-config shell MASTER_KEYRING APT::Key::MasterKeyring)
ARCHIVE_KEYRING='&keyring-filename;'
eval $(apt-config shell REMOVED_KEYS APT::Key::RemovedKeys)
ARCHIVE_KEYRING_URI='&keyring-uri;'
eval $(apt-config shell ARCHIVE_KEYRING_URI APT::Key::ArchiveKeyringURI)
-TMP_KEYRING=/var/lib/apt/keyrings/maybe-import-keyring.gpg
+TMP_KEYRING=${APT_DIR}/var/lib/apt/keyrings/maybe-import-keyring.gpg
+
+aptkey_echo() { echo "$@"; }
requires_root() {
if [ "$(id -u)" -ne 0 ]; then
- echo >&1 "ERROR: This command can only be used by root."
+ echo >&2 "ERROR: This command can only be used by root."
exit 1
fi
}
MASTER=$2
if [ ! -f "$ADD_KEYRING" ]; then
- echo "ERROR: '$ADD_KEYRING' not found"
+ echo >&2 "ERROR: '$ADD_KEYRING' not found"
return
- fi
+ fi
if [ ! -f "$MASTER" ]; then
- echo "ERROR: '$MASTER' not found"
+ echo >&2 "ERROR: '$MASTER' not found"
return
fi
# (otherwise it does not make sense from a security POV)
net_update() {
# Disabled for now as code is insecure (LP: #1013639 (and 857472, 1013128))
- exit 1
+ APT_KEY_NET_UPDATE_ENABLED=""
+ eval $(apt-config shell APT_KEY_NET_UPDATE_ENABLED APT::Key::Net-Update-Enabled)
+ if [ -z "$APT_KEY_NET_UPDATE_ENABLED" ]; then
+ exit 1
+ fi
if [ -z "$ARCHIVE_KEYRING_URI" ]; then
echo >&2 "ERROR: Your distribution is not supported in net-update as no uri for the archive-keyring is set"
echo >&2 "ERROR: an installed wget is required for a network-based update"
exit 1
fi
- if [ ! -d /var/lib/apt/keyrings ]; then
- mkdir -p /var/lib/apt/keyrings
+ if [ ! -d ${APT_DIR}/var/lib/apt/keyrings ]; then
+ mkdir -p ${APT_DIR}/var/lib/apt/keyrings
fi
- keyring=/var/lib/apt/keyrings/$(basename $ARCHIVE_KEYRING)
+ keyring=${APT_DIR}/var/lib/apt/keyrings/$(basename $ARCHIVE_KEYRING_URI)
old_mtime=0
if [ -e $keyring ]; then
old_mtime=$(stat -c %Y $keyring)
fi
- (cd /var/lib/apt/keyrings; wget --timeout=90 -q -N $ARCHIVE_KEYRING_URI)
+ (cd ${APT_DIR}/var/lib/apt/keyrings; wget --timeout=90 -q -N $ARCHIVE_KEYRING_URI)
if [ ! -e $keyring ]; then
return
fi
new_mtime=$(stat -c %Y $keyring)
if [ $new_mtime -ne $old_mtime ]; then
- echo "Checking for new archive signing keys now"
+ aptkey_echo "Checking for new archive signing keys now"
add_keys_with_verify_against_master_keyring $keyring $MASTER_KEYRING
fi
}
fi
done
else
- echo "Warning: removed keys keyring $REMOVED_KEYS missing or not readable" >&2
+ echo >&2 "Warning: removed keys keyring $REMOVED_KEYS missing or not readable"
fi
}
echo >&2 "Key ${2} is in keyring ${1}, but can't be removed as it is read only."
return
fi
- # check if it is the only key in the keyring and if so remove the keyring alltogether
+ # check if it is the only key in the keyring and if so remove the keyring altogether
if [ '1' = "$($GPG --with-colons --list-keys | grep "^pub:[^:]*:[^:]*:[^:]*:[0-9A-F]\+:" | wc -l)" ]; then
mv -f "$1" "${1}~" # behave like gpg
return
REALTARGET="$(readlink -f "$1")"
mv -f "$1" "${1}.dpkg-tmp"
cp -a "$REALTARGET" "$1"
- ls "$(dirname $1)"
fi
# delete the key from the keyring
$GPG --batch --delete-key --yes "$2"
done
fi
fi
- echo "OK"
+ aptkey_echo "OK"
}
requires_root() { true; }
shift
;;
+ --quiet)
+ aptkey_echo() { true; }
+ shift
+ ;;
--*)
echo >&2 "Unknown option: $1"
usage
requires_root
init_keyring "$TRUSTEDFILE"
$GPG --quiet --batch --import "$1"
- echo "OK"
+ aptkey_echo "OK"
;;
del|rm|remove)
init_keyring "$TRUSTEDFILE"
;;
adv*)
init_keyring "$TRUSTEDFILE"
- echo "Executing: $GPG $*"
+ aptkey_echo "Executing: $GPG $*"
$GPG $*
;;
help)
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