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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")
}
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