restic/cmd/khepri/cmd_cat.go

132 lines
2.1 KiB
Go

package main
import (
"encoding/json"
"errors"
"fmt"
"os"
"github.com/fd0/khepri"
"github.com/fd0/khepri/backend"
)
func commandCat(be backend.Server, key *khepri.Key, args []string) error {
if len(args) != 2 {
return errors.New("usage: cat [blob|tree|snapshot|key|lock] ID")
}
tpe := args[0]
id, err := backend.ParseID(args[1])
if err != nil {
return err
}
ch, err := khepri.NewContentHandler(be, key)
if err != nil {
return err
}
err = ch.LoadAllSnapshots()
if err != nil {
return err
}
switch tpe {
case "blob":
// try id
data, err := ch.Load(backend.Blob, id)
if err == nil {
_, err = os.Stdout.Write(data)
return err
}
// try storage id
buf, err := be.Get(backend.Blob, id)
if err != nil {
return err
}
// decrypt
buf, err = key.Decrypt(buf)
if err != nil {
return err
}
_, err = os.Stdout.Write(buf)
return err
case "tree":
var tree khepri.Tree
// try id
err := ch.LoadJSON(backend.Tree, id, &tree)
if err != nil {
// try storage id
buf, err := be.Get(backend.Tree, id)
if err != nil {
return err
}
// decrypt
buf, err = key.Decrypt(buf)
if err != nil {
return err
}
// unmarshal
err = json.Unmarshal(backend.Uncompress(buf), &tree)
if err != nil {
return err
}
}
buf, err := json.MarshalIndent(&tree, "", " ")
if err != nil {
return err
}
fmt.Println(string(buf))
return nil
case "snapshot":
var sn khepri.Snapshot
err := ch.LoadJSONRaw(backend.Snapshot, id, &sn)
if err != nil {
return err
}
buf, err := json.MarshalIndent(&sn, "", " ")
if err != nil {
return err
}
fmt.Println(string(buf))
return nil
case "key":
data, err := be.Get(backend.Key, id)
if err != nil {
return err
}
var key khepri.Key
err = json.Unmarshal(data, &key)
if err != nil {
return err
}
buf, err := json.MarshalIndent(&key, "", " ")
if err != nil {
return err
}
fmt.Println(string(buf))
return nil
case "lock":
return errors.New("not yet implemented")
default:
return errors.New("invalid type")
}
}