mirror of
https://github.com/restic/restic.git
synced 2024-09-05 19:09:24 +02:00
74 lines
2.4 KiB
Go
74 lines
2.4 KiB
Go
package adal
|
|
|
|
// Copyright 2017 Microsoft Corporation
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
import (
|
|
"encoding/json"
|
|
"fmt"
|
|
"io/ioutil"
|
|
"os"
|
|
"path/filepath"
|
|
)
|
|
|
|
// LoadToken restores a Token object from a file located at 'path'.
|
|
func LoadToken(path string) (*Token, error) {
|
|
file, err := os.Open(path)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("failed to open file (%s) while loading token: %v", path, err)
|
|
}
|
|
defer file.Close()
|
|
|
|
var token Token
|
|
|
|
dec := json.NewDecoder(file)
|
|
if err = dec.Decode(&token); err != nil {
|
|
return nil, fmt.Errorf("failed to decode contents of file (%s) into Token representation: %v", path, err)
|
|
}
|
|
return &token, nil
|
|
}
|
|
|
|
// SaveToken persists an oauth token at the given location on disk.
|
|
// It moves the new file into place so it can safely be used to replace an existing file
|
|
// that maybe accessed by multiple processes.
|
|
func SaveToken(path string, mode os.FileMode, token Token) error {
|
|
dir := filepath.Dir(path)
|
|
err := os.MkdirAll(dir, os.ModePerm)
|
|
if err != nil {
|
|
return fmt.Errorf("failed to create directory (%s) to store token in: %v", dir, err)
|
|
}
|
|
|
|
newFile, err := ioutil.TempFile(dir, "token")
|
|
if err != nil {
|
|
return fmt.Errorf("failed to create the temp file to write the token: %v", err)
|
|
}
|
|
tempPath := newFile.Name()
|
|
|
|
if err := json.NewEncoder(newFile).Encode(token); err != nil {
|
|
return fmt.Errorf("failed to encode token to file (%s) while saving token: %v", tempPath, err)
|
|
}
|
|
if err := newFile.Close(); err != nil {
|
|
return fmt.Errorf("failed to close temp file %s: %v", tempPath, err)
|
|
}
|
|
|
|
// Atomic replace to avoid multi-writer file corruptions
|
|
if err := os.Rename(tempPath, path); err != nil {
|
|
return fmt.Errorf("failed to move temporary token to desired output location. src=%s dst=%s: %v", tempPath, path, err)
|
|
}
|
|
if err := os.Chmod(path, mode); err != nil {
|
|
return fmt.Errorf("failed to chmod the token file %s: %v", path, err)
|
|
}
|
|
return nil
|
|
}
|