1 files changed, 0 insertions, 164 deletions
diff --git a/tvix/store/protos/castore.go b/tvix/store/protos/castore.go
deleted file mode 100644
index 4ab7ab42887a..000000000000
--- a/tvix/store/protos/castore.go
+++ /dev/null
@@ -1,164 +0,0 @@
-package storev1
-
-import (
-	"bytes"
-	"encoding/base64"
-	"fmt"
-	"google.golang.org/protobuf/proto"
-	"lukechampine.com/blake3"
-)
-
-// The size of a directory is calculated by summing up the numbers of
-// `directories`, `files` and `symlinks`, and for each directory, its size
-// field.
-func (d *Directory) Size() uint32 {
-	var size uint32
-	size = uint32(len(d.Files) + len(d.Symlinks))
-	for _, d := range d.Directories {
-		size += 1 + d.Size
-	}
-	return size
-}
-
-func (d *Directory) Digest() ([]byte, error) {
-	b, err := proto.MarshalOptions{
-		Deterministic: true,
-	}.Marshal(d)
-
-	if err != nil {
-		return nil, fmt.Errorf("error while marshalling directory: %w", err)
-	}
-
-	h := blake3.New(32, nil)
-
-	_, err = h.Write(b)
-	if err != nil {
-		return nil, fmt.Errorf("error writing to hasher: %w", err)
-	}
-
-	return h.Sum(nil), nil
-}
-
-// isValidName checks a name for validity.
-// We disallow slashes, null bytes, '.', '..' and the empty string.
-// Depending on the context, a *Node message with an empty string as name is
-// allowed, but they don't occur inside a Directory message.
-func isValidName(n []byte) bool {
-	if len(n) == 0 || bytes.Equal(n, []byte("..")) || bytes.Equal(n, []byte{'.'}) || bytes.Contains(n, []byte{'\x00'}) || bytes.Contains(n, []byte{'/'}) {
-		return false
-	}
-	return true
-}
-
-// Validate thecks the Directory message for invalid data, such as:
-// - violations of name restrictions
-// - invalid digest lengths
-// - not properly sorted lists
-// - duplicate names in the three lists
-func (d *Directory) Validate() error {
-	// seenNames contains all seen names so far.
-	// We populate this to ensure node names are unique across all three lists.
-	seenNames := make(map[string]interface{})
-
-	// We also track the last seen name in each of the three lists,
-	// to ensure nodes are sorted by their names.
-	var lastDirectoryName, lastFileName, lastSymlinkName []byte
-
-	// helper function to only insert in sorted order.
-	// used with the three lists above.
-	// Note this consumes a *pointer to* a string,  as it mutates it.
-	insertIfGt := func(lastName *[]byte, name []byte) error {
-		// update if it's greater than the previous name
-		if bytes.Compare(name, *lastName) == 1 {
-			*lastName = name
-			return nil
-		} else {
-			return fmt.Errorf("%v is not in sorted order", name)
-		}
-	}
-
-	// insertOnce inserts into seenNames if the key doesn't exist yet.
-	insertOnce := func(name []byte) error {
-		encoded := base64.StdEncoding.EncodeToString(name)
-		if _, found := seenNames[encoded]; found {
-			return fmt.Errorf("duplicate name: %v", string(name))
-		}
-		seenNames[encoded] = nil
-		return nil
-	}
-
-	// Loop over all Directories, Files and Symlinks individually.
-	// Check the name for validity, check a potential digest for length,
-	// then check for sorting in the current list, and uniqueness across all three lists.
-	for _, directoryNode := range d.Directories {
-		directoryName := directoryNode.GetName()
-
-		// check name for validity
-		if !isValidName(directoryName) {
-			return fmt.Errorf("invalid name for DirectoryNode: %v", directoryName)
-		}
-
-		// check digest to be 32 bytes
-		digestLen := len(directoryNode.GetDigest())
-		if digestLen != 32 {
-			return fmt.Errorf("invalid digest length for DirectoryNode: %d", digestLen)
-		}
-
-		// ensure names are sorted
-		if err := insertIfGt(&lastDirectoryName, directoryName); err != nil {
-			return err
-		}
-
-		// add to seenNames
-		if err := insertOnce(directoryName); err != nil {
-			return err
-		}
-
-	}
-
-	for _, fileNode := range d.Files {
-		fileName := fileNode.GetName()
-
-		// check name for validity
-		if !isValidName(fileName) {
-			return fmt.Errorf("invalid name for FileNode: %v", fileName)
-		}
-
-		// check digest to be 32 bytes
-		digestLen := len(fileNode.GetDigest())
-		if digestLen != 32 {
-			return fmt.Errorf("invalid digest length for FileNode: %d", digestLen)
-		}
-
-		// ensure names are sorted
-		if err := insertIfGt(&lastFileName, fileName); err != nil {
-			return err
-		}
-
-		// add to seenNames
-		if err := insertOnce(fileName); err != nil {
-			return err
-		}
-	}
-
-	for _, symlinkNode := range d.Symlinks {
-		symlinkName := symlinkNode.GetName()
-
-		// check name for validity
-		if !isValidName(symlinkName) {
-			return fmt.Errorf("invalid name for SymlinkNode: %v", symlinkName)
-		}
-
-		// ensure names are sorted
-		if err := insertIfGt(&lastSymlinkName, symlinkName); err != nil {
-			return err
-		}
-
-		// add to seenNames
-		if err := insertOnce(symlinkName); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}