package vaultfs import ( "bytes" "errors" "os" "path" "time" "github.com/nsheridan/cashier/server/config" "github.com/nsheridan/cashier/server/helpers/vault" "go4.org/wkfs" ) // Register the /vault/ filesystem as a well-known filesystem. func Register(vc *config.Vault) { if vc == nil { registerBrokenFS(errors.New("no vault configuration found")) return } client, err := vault.NewClient(vc.Address, vc.Token) if err != nil { registerBrokenFS(err) return } wkfs.RegisterFS("/vault/", &vaultFS{ client: client, }) } func registerBrokenFS(err error) { wkfs.RegisterFS("/vault/", &vaultFS{ err: err, }) } type vaultFS struct { err error client *vault.Client } // Open opens the named file for reading. func (fs *vaultFS) Open(name string) (wkfs.File, error) { secret, err := fs.client.Read(name) if err != nil { return nil, err } return &file{ name: name, Reader: bytes.NewReader([]byte(secret)), }, nil } func (fs *vaultFS) Stat(name string) (os.FileInfo, error) { return fs.Lstat(name) } func (fs *vaultFS) Lstat(name string) (os.FileInfo, error) { secret, err := fs.client.Read(name) if err != nil { return nil, err } return &statInfo{ name: path.Base(name), size: int64(len(secret)), }, nil } func (fs *vaultFS) MkdirAll(path string, perm os.FileMode) error { return nil } func (fs *vaultFS) OpenFile(name string, flag int, perm os.FileMode) (wkfs.FileWriter, error) { return nil, errors.New("not implemented") } type statInfo struct { name string size int64 isDir bool modtime time.Time } func (si *statInfo) IsDir() bool { return si.isDir } func (si *statInfo) ModTime() time.Time { return si.modtime } func (si *statInfo) Mode() os.FileMode { return 0644 } func (si *statInfo) Name() string { return path.Base(si.name) } func (si *statInfo) Size() int64 { return si.size } func (si *statInfo) Sys() interface{} { return nil } type file struct { name string *bytes.Reader } func (*file) Close() error { return nil } func (f *file) Name() string { return path.Base(f.name) } func (f *file) Stat() (os.FileInfo, error) { return nil, errors.New("Stat not implemented on /vault/ files") }