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 $GPGHOMEDIR"
+# create the trustdb with an (empty) dummy keyring
+# older gpgs required it, newer gpgs even warn that it isn't needed,
+# but require it nontheless for some commands, so we just play safe
+# here for the foreseeable future and create a dummy one
+$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"
projects / apt.git / blobdiff