package cryptcheck import ( "context" "fmt" "github.com/rclone/rclone/backend/crypt" "github.com/rclone/rclone/cmd" "github.com/rclone/rclone/cmd/check" "github.com/rclone/rclone/fs" "github.com/rclone/rclone/fs/hash" "github.com/rclone/rclone/fs/operations" "github.com/spf13/cobra" ) func init() { cmd.Root.AddCommand(commandDefinition) cmdFlag := commandDefinition.Flags() check.AddFlags(cmdFlag) } var commandDefinition = &cobra.Command{ Use: "cryptcheck remote:path cryptedremote:path", Short: `Cryptcheck checks the integrity of a crypted remote.`, Long: ` rclone cryptcheck checks a remote against a [crypted](/crypt/) remote. This is the equivalent of running rclone [check](/commands/rclone_check/), but able to check the checksums of the crypted remote. For it to work the underlying remote of the cryptedremote must support some kind of checksum. It works by reading the nonce from each file on the cryptedremote: and using that to encrypt each file on the remote:. It then checks the checksum of the underlying file on the cryptedremote: against the checksum of the file it has just encrypted. Use it like this rclone cryptcheck /path/to/files encryptedremote:path You can use it like this also, but that will involve downloading all the files in remote:path. rclone cryptcheck remote:path encryptedremote:path After it has run it will log the status of the encryptedremote:. ` + check.FlagsHelp, Run: func(command *cobra.Command, args []string) { cmd.CheckArgs(2, 2, command, args) fsrc, fdst := cmd.NewFsSrcDst(args) cmd.Run(false, true, command, func() error { return cryptCheck(context.Background(), fdst, fsrc) }) }, } // cryptCheck checks the integrity of a crypted remote func cryptCheck(ctx context.Context, fdst, fsrc fs.Fs) error { // Check to see fcrypt is a crypt fcrypt, ok := fdst.(*crypt.Fs) if !ok { return fmt.Errorf("%s:%s is not a crypt remote", fdst.Name(), fdst.Root()) } // Find a hash to use funderlying := fcrypt.UnWrap() hashType := funderlying.Hashes().GetOne() if hashType == hash.None { return fmt.Errorf("%s:%s does not support any hashes", funderlying.Name(), funderlying.Root()) } fs.Infof(nil, "Using %v for hash comparisons", hashType) opt, close, err := check.GetCheckOpt(fsrc, fcrypt) if err != nil { return err } defer close() // checkIdentical checks to see if dst and src are identical // // it returns true if differences were found // it also returns whether it couldn't be hashed opt.Check = func(ctx context.Context, dst, src fs.Object) (differ bool, noHash bool, err error) { cryptDst := dst.(*crypt.Object) underlyingDst := cryptDst.UnWrap() underlyingHash, err := underlyingDst.Hash(ctx, hashType) if err != nil { return true, false, fmt.Errorf("error reading hash from underlying %v: %w", underlyingDst, err) } if underlyingHash == "" { return false, true, nil } cryptHash, err := fcrypt.ComputeHash(ctx, cryptDst, src, hashType) if err != nil { return true, false, fmt.Errorf("error computing hash: %w", err) } if cryptHash == "" { return false, true, nil } if cryptHash != underlyingHash { err = fmt.Errorf("hashes differ (%s:%s) %q vs (%s:%s) %q", fdst.Name(), fdst.Root(), cryptHash, fsrc.Name(), fsrc.Root(), underlyingHash) fs.Errorf(src, err.Error()) return true, false, nil } return false, false, nil } return operations.CheckFn(ctx, opt) }