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keys.go
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keys.go
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/*
* Copyright © 2018-2019, 2021 A Bunch Tell LLC.
*
* This file is part of WriteFreely.
*
* WriteFreely is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, included
* in the LICENSE file in this source code package.
*/
package writefreely
import (
"github.com/writeas/web-core/log"
"github.com/writefreely/writefreely/key"
"io/ioutil"
"os"
"path/filepath"
)
const (
keysDir = "keys"
)
var (
emailKeyPath = filepath.Join(keysDir, "email.aes256")
cookieAuthKeyPath = filepath.Join(keysDir, "cookies_auth.aes256")
cookieKeyPath = filepath.Join(keysDir, "cookies_enc.aes256")
csrfKeyPath = filepath.Join(keysDir, "csrf.aes256")
)
// InitKeys loads encryption keys into memory via the given Apper interface
func InitKeys(apper Apper) error {
log.Info("Loading encryption keys...")
err := apper.LoadKeys()
if err != nil {
return err
}
return nil
}
func initKeyPaths(app *App) {
emailKeyPath = filepath.Join(app.cfg.Server.KeysParentDir, emailKeyPath)
cookieAuthKeyPath = filepath.Join(app.cfg.Server.KeysParentDir, cookieAuthKeyPath)
cookieKeyPath = filepath.Join(app.cfg.Server.KeysParentDir, cookieKeyPath)
csrfKeyPath = filepath.Join(app.cfg.Server.KeysParentDir, csrfKeyPath)
}
// generateKey generates a key at the given path used for the encryption of
// certain user data. Because user data becomes unrecoverable without these
// keys, this won't overwrite any existing key, and instead outputs a message.
func generateKey(path string) error {
// Check if key file exists
if _, err := os.Stat(path); err == nil {
log.Info("%s already exists. rm the file if you understand the consquences.", path)
return nil
} else if !os.IsNotExist(err) {
log.Error("%s", err)
return err
}
log.Info("Generating %s.", path)
b, err := key.GenerateBytes(key.EncKeysBytes)
if err != nil {
log.Error("FAILED. %s. Run writefreely --gen-keys again.", err)
return err
}
err = ioutil.WriteFile(path, b, 0600)
if err != nil {
log.Error("FAILED writing file: %s", err)
return err
}
log.Info("Success.")
return nil
}

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