pacman-key: Add --import and --import-trustdb

Currently, pacman-key allows the user to import their keys using the --add
option. However, no similar functionality exists for importing ownertrust
values.

The --import-trustdb option takes a list of directories and imports ownertrust
values if the directories have a trustdb.gpg database.

The --import option takes a list of directories and imports keys from
pubring.gpg and ownertrust values from trustdb.gpg. Think of it as a combination
of --add and --import-trustdb

Signed-off-by: Pang Yan Han <pangyanhan@gmail.com>
Signed-off-by: Allan McRae <allan@archlinux.org>
Signed-off-by: Dan McGee <dan@archlinux.org>

doc/pacman-key.8.txt

@@ -60,6 +60,13 @@ Options
 *-h, \--help*::
 	Output syntax and command line options.
 
+*--import* <dir(s)>::
+	Adds keys from pubring.gpg into pacman's keyring and imports ownertrust
+	values from trustdb.gpg in the specified directories.
+
+*--import-dirs* <dir(s)> ::
+	Imports ownertrust values from trustdb.gpg in the specified directories.
+
 *--init*::
 	Ensure the keyring is properly initialized and has the required access
 	permissions.

scripts/pacman-key.sh.in

@@ -32,6 +32,8 @@ DELETE=0
 EDITKEY=0
 EXPORT=0
 FINGER=0
+IMPORT=0
+IMPORT_TRUSTDB=0
 INIT=0
 LIST=0
 RECEIVE=0
@@ -66,6 +68,8 @@ usage() {
 	echo "$(gettext "  --edit-key <keyid(s)>     Present a menu for key management task on keyids")"
 	echo "$(gettext "  --gpgdir <dir>            Set an alternate directory for gnupg")"
 	printf "$(gettext "                                    (instead of '%s')")\n" "@sysconfdir@/pacman.d/gnupg"
+	echo "$(gettext "  --import <dir(s)>         Imports pubring.gpg and trustdb.gpg from dir(s)")"
+	echo "$(gettext "  --import-trustdb <dir(s)> Imports ownertrust values from trustdb.gpg in dir(s)")"
 	echo "$(gettext "  --init                    Ensure the keyring is properly initialized")"
 	echo "$(gettext "  --reload                  Reload the default keys")"
 }
@@ -278,6 +282,34 @@ edit_keys() {
 	done
 }
 
+import_trustdb() {
+	local importdir
+	local trustdb=$(mktemp)
+	"${GPG_PACMAN[@]}" --export-ownertrust > ${trustdb}
+
+	for importdir in "${IMPORT_DIRS[@]}"; do
+		if [[ -f "${importdir}/trustdb.gpg" ]]; then
+			gpg --homedir "${importdir}" --export-ownertrust >> ${trustdb}
+		fi
+	done
+
+	"${GPG_PACMAN[@]}" --import-ownertrust ${trustdb}
+	rm -f ${trustdb}
+}
+
+import() {
+	local importdir
+
+	# Imports public keys, then import trustdbs
+	for importdir in "${IMPORT_DIRS[@]}"; do
+		if [[ -f "${importdir}/pubring.gpg" ]]; then
+			"${GPG_PACMAN[@]}" --quiet --batch --import "${importdir}/pubring.gpg"
+		fi
+	done
+
+	import_trustdb
+}
+
 # PROGRAM START
 if ! type gettext &>/dev/null; then
 	gettext() {
@@ -287,7 +319,8 @@ fi
 
 OPT_SHORT="a::d:e:f::hlr:uv:V"
 OPT_LONG="add::,config:,delete:,edit-key:,export::,finger::,gpgdir:"
-OPT_LONG+=",help,init,list,receive:,reload,updatedb,verify:,version"
+OPT_LONG+=",help,import:,import-trustdb:,init,list,receive:,reload,updatedb"
+OPT_LONG+=",verify:,version"
 if ! OPT_TEMP="$(parse_options $OPT_SHORT $OPT_LONG "$@")"; then
 	echo; usage; exit 1 # E_INVALID_OPTION;
 fi
@@ -308,6 +341,8 @@ while true; do
 		-e|--export)      EXPORT=1; [[ -n $2 && ${2:0:1} != "-" ]] && shift && KEYIDS=($1) ;;
 		-f|--finger)      FINGER=1; [[ -n $2 && ${2:0:1} != "-" ]] && shift && KEYIDS=($1) ;;
 		--gpgdir)         shift; PACMAN_KEYRING_DIR=$1 ;;
+		--import)         IMPORT=1; shift; IMPORT_DIRS=($1) ;;
+		--import-trustdb) IMPORT_TRUSTDB=1; shift; IMPORT_DIRS=($1) ;;
 		--init)           INIT=1 ;;
 		-l|--list)        LIST=1 ;;
 		-r|--receive)     RECEIVE=1; shift; TMP=($1); KEYSERVER=${TMP[0]}; KEYIDS=(${TMP[@]:1}); unset TMP;;
@@ -330,7 +365,7 @@ if ! type -p gpg >/dev/null; then
 	exit 1
 fi
 
-if (( (ADD || DELETE || EDITKEY || INIT || RECEIVE || RELOAD || UPDATEDB) && EUID != 0 )); then
+if (( (ADD || DELETE || EDITKEY || IMPORT || IMPORT_TRUSTDB || INIT || RECEIVE || RELOAD || UPDATEDB) && EUID != 0 )); then
 	error "$(gettext "%s needs to be run as root for this operation.")" "pacman-key"
 	exit 1
 fi
@@ -348,7 +383,7 @@ PACMAN_KEYRING_DIR=${PACMAN_KEYRING_DIR:-$(get_from "$CONFIG" "GPGDir" || echo "
 GPG_PACMAN=(gpg --homedir ${PACMAN_KEYRING_DIR} --no-permission-warning)
 
 # check only a single operation has been given
-numopt=$(( ADD + DELETE + EDITKEY + EXPORT + FINGER + INIT + LIST + RECEIVE + RELOAD + UPDATEDB + VERIFY ))
+numopt=$(( ADD + DELETE + EDITKEY + EXPORT + FINGER + IMPORT + IMPORT_TRUSTDB + INIT + LIST + RECEIVE + RELOAD + UPDATEDB + VERIFY ))
 
 case $numopt in
 	0)
@@ -369,6 +404,8 @@ esac
 (( EDITKEY )) && edit_keys
 (( EXPORT )) && "${GPG_PACMAN[@]}" --armor --export "${KEYIDS[@]}"
 (( FINGER )) && "${GPG_PACMAN[@]}" --batch --fingerprint "${KEYIDS[@]}"
+(( IMPORT )) && import
+(( IMPORT_TRUSTDB)) && import_trustdb
 (( INIT )) && initialize
 (( LIST )) && "${GPG_PACMAN[@]}" --batch --list-sigs "${KEYIDS[@]}"
 (( RECEIVE )) && receive_keys