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// Copyright 2015 Matthew Holt and The Caddy Authors
//
// 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.
package caddy
import (
"os"
"path/filepath"
"runtime"
"github.com/mholt/certmagic"
)
// StorageConverter is a type that can convert itself
// to a valid, usable certmagic.Storage value. (The
// value might be short-lived.) This interface allows
// us to adapt any CertMagic storage implementation
// into a consistent API for Caddy configuration.
type StorageConverter interface {
CertMagicStorage() (certmagic.Storage, error)
}
// homeDir returns the best guess of the current user's home
// directory from environment variables. If unknown, "." (the
// current directory) is returned instead.
func homeDir() string {
home := os.Getenv("HOME")
if home == "" && runtime.GOOS == "windows" {
drive := os.Getenv("HOMEDRIVE")
path := os.Getenv("HOMEPATH")
home = drive + path
if drive == "" || path == "" {
home = os.Getenv("USERPROFILE")
}
}
if home == "" {
home = "."
}
return home
}
// dataDir returns a directory path that is suitable for storage.
// https://specifications.freedesktop.org/basedir-spec/basedir-spec-latest.html#variables
func dataDir() string {
baseDir := filepath.Join(homeDir(), ".local", "share")
if xdgData := os.Getenv("XDG_DATA_HOME"); xdgData != "" {
baseDir = xdgData
}
return filepath.Join(baseDir, "caddy")
}
// TODO: Consider using Go 1.13's os.UserConfigDir() (https://golang.org/pkg/os/#UserConfigDir)
// if we are going to store the last-loaded config anywhere
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