new: [rsync-backup-target] add ``ssh-key get-type IDENT`` to get backup type info

Signed-off-by: Valentin Lab <valentin.lab@kalysto.org>

rsync-backup-target/build/src/usr/local/sbin/ssh-admin-cmd-validate

@@ -71,6 +71,15 @@ elif [[ "$SSH_ORIGINAL_COMMAND" =~ ^"ssh-key rm "[a-zA-Z0-9._-]+$ ]]; then
 
     # echo "Would accept: $SSH_ORIGINAL_COMMAND" >&2
 	exec sudo /usr/local/sbin/ssh-key rm "$label" "${ssh_args[@]:2}"
+elif [[ "$SSH_ORIGINAL_COMMAND" =~ ^"ssh-key get-type "[a-zA-Z0-9._-]+$ ]]; then
+	log "ACCEPTED: $SSH_ORIGINAL_COMMAND"
+
+    ## Interpret \ to allow passing spaces (want to avoid possible issue with \n)
+    #read -a ssh_args <<< "${SSH_ORIGINAL_COMMAND}"
+    ssh_args=(${SSH_ORIGINAL_COMMAND})
+
+    # echo "Would accept: $SSH_ORIGINAL_COMMAND" >&2
+	exec sudo /usr/local/sbin/ssh-key get-type "$label" "${ssh_args[@]:2}"
 elif [[ "$SSH_ORIGINAL_COMMAND" =~ ^"request-recovery-key "[a-zA-Z0-9._-]+$ ]]; then
 	log "ACCEPTED: $SSH_ORIGINAL_COMMAND"
 

rsync-backup-target/build/src/usr/local/sbin/ssh-key

@@ -54,6 +54,20 @@ ssh-key-rm() {
 }
 
 
+ssh-key-get-type() {
+    local label="$1" ident="$2" key content commentary
+
+    key="${RSYNC_KEY_PATH}/backup/$label/$ident.pub"
+    if ! [ -e "$key" ]; then
+        echo "Error: key '$ident' not found." >&2
+        return 1
+    fi
+    content=$(cat "$key") || return 1
+    commentary=${content##* }
+    printf "%s\n" "${commentary%%@*}"
+}
+
+
 ssh-key-add() {
     local label="$1" type="$2" key="$3" email="$4"
 
@@ -127,6 +141,10 @@ case "$1" in
         shift
         ssh-key-ls "$@"
         ;;
+    "get-type")
+        shift
+        ssh-key-get-type "$@"
+        ;;
     *)
         echo "Unknown command '$1'."
         ;;