path: root/accounts/key_store_plain.go

// Copyright 2015 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.

package accounts

import (
    "encoding/json"
    "fmt"
    "os"
    "path/filepath"

    "github.com/ethereum/go-ethereum/common"
)

type keyStorePlain struct {
    keysDirPath string
}

func (ks keyStorePlain) GetKey(addr common.Address, filename, auth string) (*Key, error) {
    fd, err := os.Open(filename)
    if err != nil {
        return nil, err
    }
    defer fd.Close()
    key := new(Key)
    if err := json.NewDecoder(fd).Decode(key); err != nil {
        return nil, err
    }
    if key.Address != addr {
        return nil, fmt.Errorf("key content mismatch: have address %x, want %x", key.Address, addr)
    }
    return key, nil
}

func (ks keyStorePlain) StoreKey(filename string, key *Key, auth string) error {
    content, err := json.Marshal(key)
    if err != nil {
        return err
    }
    return writeKeyFile(filename, content)
}

func (ks keyStorePlain) JoinPath(filename string) string {
    if filepath.IsAbs(filename) {
        return filename
    } else {
        return filepath.Join(ks.keysDirPath, filename)
    }
}