a6a7b424f8
The last patch added functionality for generating gocryptfs.longname.* files, this patch adds support for mapping them back to the full filenames. Note that resolving a long name needs a full readdir. A cache will be implemented later on to improve performance.
27 lines
662 B
Go
27 lines
662 B
Go
package fusefrontend_reverse
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import (
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"crypto/sha256"
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"github.com/hanwen/go-fuse/fuse"
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"github.com/hanwen/go-fuse/fuse/nodefs"
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"github.com/rfjakob/gocryptfs/internal/nametransform"
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)
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// deriveDirIV derives the DirIV from the encrypted directory path by
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// hashing it
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func deriveDirIV(dirPath string) []byte {
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hash := sha256.Sum256([]byte(dirPath))
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return hash[:nametransform.DirIVLen]
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}
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func (rfs *reverseFS) newDirIVFile(cRelPath string) (nodefs.File, fuse.Status) {
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cDir := saneDir(cRelPath)
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absDir, err := rfs.abs(rfs.decryptPath(cDir))
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if err != nil {
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return nil, fuse.ToStatus(err)
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}
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return rfs.NewVirtualFile(deriveDirIV(cDir), absDir)
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}
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