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/* SPDX-License-Identifier: MIT
*
* Copyright (C) 2019-2020 WireGuard LLC. All Rights Reserved.
*/
package conf
import (
"errors"
"io/ioutil"
"os"
"path/filepath"
"strings"
"golang.zx2c4.com/wireguard/windows/conf/dpapi"
)
const configFileSuffix = ".conf.dpapi"
const configFileUnencryptedSuffix = ".conf"
func ListConfigNames() ([]string, error) {
configFileDir, err := tunnelConfigurationsDirectory()
if err != nil {
return nil, err
}
files, err := ioutil.ReadDir(configFileDir)
if err != nil {
return nil, err
}
configs := make([]string, len(files))
i := 0
for _, file := range files {
name := filepath.Base(file.Name())
if len(name) <= len(configFileSuffix) || !strings.HasSuffix(name, configFileSuffix) {
continue
}
if !file.Mode().IsRegular() || file.Mode().Perm()&0444 == 0 {
continue
}
name = strings.TrimSuffix(name, configFileSuffix)
if !TunnelNameIsValid(name) {
continue
}
configs[i] = name
i++
}
return configs[:i], nil
}
func LoadFromName(name string) (*Config, error) {
configFileDir, err := tunnelConfigurationsDirectory()
if err != nil {
return nil, err
}
return LoadFromPath(filepath.Join(configFileDir, name+configFileSuffix))
}
func LoadFromPath(path string) (*Config, error) {
name, err := NameFromPath(path)
if err != nil {
return nil, err
}
bytes, err := ioutil.ReadFile(path)
if err != nil {
return nil, err
}
if strings.HasSuffix(path, configFileSuffix) {
bytes, err = dpapi.Decrypt(bytes, name)
if err != nil {
return nil, err
}
}
return FromWgQuickWithUnknownEncoding(string(bytes), name)
}
func PathIsEncrypted(path string) bool {
return strings.HasSuffix(filepath.Base(path), configFileSuffix)
}
func NameFromPath(path string) (string, error) {
name := filepath.Base(path)
if !((len(name) > len(configFileSuffix) && strings.HasSuffix(name, configFileSuffix)) ||
(len(name) > len(configFileUnencryptedSuffix) && strings.HasSuffix(name, configFileUnencryptedSuffix))) {
return "", errors.New("Path must end in either " + configFileSuffix + " or " + configFileUnencryptedSuffix)
}
if strings.HasSuffix(path, configFileSuffix) {
name = strings.TrimSuffix(name, configFileSuffix)
} else {
name = strings.TrimSuffix(name, configFileUnencryptedSuffix)
}
if !TunnelNameIsValid(name) {
return "", errors.New("Tunnel name is not valid")
}
return name, nil
}
func (config *Config) Save(overwrite bool) error {
if !TunnelNameIsValid(config.Name) {
return errors.New("Tunnel name is not valid")
}
configFileDir, err := tunnelConfigurationsDirectory()
if err != nil {
return err
}
filename := filepath.Join(configFileDir, config.Name+configFileSuffix)
bytes := []byte(config.ToWgQuick())
bytes, err = dpapi.Encrypt(bytes, config.Name)
if err != nil {
return err
}
return writeLockedDownFile(filename, overwrite, bytes)
}
func (config *Config) Path() (string, error) {
if !TunnelNameIsValid(config.Name) {
return "", errors.New("Tunnel name is not valid")
}
configFileDir, err := tunnelConfigurationsDirectory()
if err != nil {
return "", err
}
return filepath.Join(configFileDir, config.Name+configFileSuffix), nil
}
func DeleteName(name string) error {
if !TunnelNameIsValid(name) {
return errors.New("Tunnel name is not valid")
}
configFileDir, err := tunnelConfigurationsDirectory()
if err != nil {
return err
}
return os.Remove(filepath.Join(configFileDir, name+configFileSuffix))
}
func (config *Config) Delete() error {
return DeleteName(config.Name)
}
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