fichier: 1fichier support - fixes #2908

This was started by Fionera, finished off by Laura with fixes and more
docs from Nick.

Co-authored-by: Fionera <fionera@fionera.de>
Co-authored-by: Nick Craig-Wood <nick@craig-wood.com>

fs/hash/hash.go

@@ -9,6 +9,7 @@ import (
 	"io"
 	"strings"
 
+	"github.com/jzelinskie/whirlpool"
 	"github.com/ncw/rclone/backend/dropbox/dbhash"
 	"github.com/ncw/rclone/backend/onedrive/quickxorhash"
 	"github.com/pkg/errors"
@@ -36,13 +37,16 @@ const (
 	// https://docs.microsoft.com/en-us/onedrive/developer/code-snippets/quickxorhash
 	QuickXorHash
 
+	// Whirlpool indicates Whirlpool support
+	Whirlpool
+
 	// None indicates no hashes are supported
 	None Type = 0
 )
 
 // Supported returns a set of all the supported hashes by
 // HashStream and MultiHasher.
-var Supported = NewHashSet(MD5, SHA1, Dropbox, QuickXorHash)
+var Supported = NewHashSet(MD5, SHA1, Dropbox, QuickXorHash, Whirlpool)
 
 // Width returns the width in characters for any HashType
 var Width = map[Type]int{
@@ -50,6 +54,7 @@ var Width = map[Type]int{
 	SHA1:         40,
 	Dropbox:      64,
 	QuickXorHash: 40,
+	Whirlpool:    128,
 }
 
 // Stream will calculate hashes of all supported hash types.
@@ -89,6 +94,8 @@ func (h Type) String() string {
 		return "DropboxHash"
 	case QuickXorHash:
 		return "QuickXorHash"
+	case Whirlpool:
+		return "Whirlpool"
 	default:
 		err := fmt.Sprintf("internal error: unknown hash type: 0x%x", int(h))
 		panic(err)
@@ -108,6 +115,8 @@ func (h *Type) Set(s string) error {
 		*h = Dropbox
 	case "QuickXorHash":
 		*h = QuickXorHash
+	case "Whirlpool":
+		*h = Whirlpool
 	default:
 		return errors.Errorf("Unknown hash type %q", s)
 	}
@@ -138,6 +147,8 @@ func fromTypes(set Set) (map[Type]hash.Hash, error) {
 			hashers[t] = dbhash.New()
 		case QuickXorHash:
 			hashers[t] = quickxorhash.New()
+		case Whirlpool:
+			hashers[t] = whirlpool.New()
 		default:
 			err := fmt.Sprintf("internal error: Unsupported hash type %v", t)
 			panic(err)

fs/hash/hash_test.go

@@ -73,6 +73,7 @@ var hashTestSet = []hashTest{
 			hash.SHA1:         "3ab6543c08a75f292a5ecedac87ec41642d12166",
 			hash.Dropbox:      "214d2fcf3566e94c99ad2f59bd993daca46d8521a0c447adf4b324f53fddc0c7",
 			hash.QuickXorHash: "0110c000085000031c0001095ec00218d0000700",
+			hash.Whirlpool:    "eddf52133d4566d763f716e853d6e4efbabd29e2c2e63f56747b1596172851d34c2df9944beb6640dbdbe3d9b4eb61180720a79e3d15baff31c91e43d63869a4",
 		},
 	},
 	// Empty data set
@@ -83,6 +84,7 @@ var hashTestSet = []hashTest{
 			hash.SHA1:         "da39a3ee5e6b4b0d3255bfef95601890afd80709",
 			hash.Dropbox:      "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
 			hash.QuickXorHash: "0000000000000000000000000000000000000000",
+			hash.Whirlpool:    "19fa61d75522a4669b44e39c1d2e1726c530232130d407f89afee0964997f7a73e83be698b288febcf88e3e03c4f0757ea8964e59b63d93708b138cc42a66eb3",
 		},
 	},
 }