mirror of https://github.com/k3s-io/k3s
93 lines
2.9 KiB
Go
93 lines
2.9 KiB
Go
/*
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Copyright 2016 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package homedir
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import (
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"os"
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"path/filepath"
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"runtime"
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)
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// HomeDir returns the home directory for the current user.
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// On Windows:
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// 1. the first of %HOME%, %HOMEDRIVE%%HOMEPATH%, %USERPROFILE% containing a `.kube\config` file is returned.
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// 2. if none of those locations contain a `.kube\config` file, the first of %HOME%, %USERPROFILE%, %HOMEDRIVE%%HOMEPATH% that exists and is writeable is returned.
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// 3. if none of those locations are writeable, the first of %HOME%, %USERPROFILE%, %HOMEDRIVE%%HOMEPATH% that exists is returned.
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// 4. if none of those locations exists, the first of %HOME%, %USERPROFILE%, %HOMEDRIVE%%HOMEPATH% that is set is returned.
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func HomeDir() string {
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if runtime.GOOS == "windows" {
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home := os.Getenv("HOME")
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homeDriveHomePath := ""
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if homeDrive, homePath := os.Getenv("HOMEDRIVE"), os.Getenv("HOMEPATH"); len(homeDrive) > 0 && len(homePath) > 0 {
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homeDriveHomePath = homeDrive + homePath
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}
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userProfile := os.Getenv("USERPROFILE")
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// Return first of %HOME%, %HOMEDRIVE%/%HOMEPATH%, %USERPROFILE% that contains a `.kube\config` file.
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// %HOMEDRIVE%/%HOMEPATH% is preferred over %USERPROFILE% for backwards-compatibility.
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for _, p := range []string{home, homeDriveHomePath, userProfile} {
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if len(p) == 0 {
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continue
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}
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if _, err := os.Stat(filepath.Join(p, ".kube", "config")); err != nil {
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continue
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}
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return p
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}
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firstSetPath := ""
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firstExistingPath := ""
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// Prefer %USERPROFILE% over %HOMEDRIVE%/%HOMEPATH% for compatibility with other auth-writing tools
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for _, p := range []string{home, userProfile, homeDriveHomePath} {
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if len(p) == 0 {
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continue
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}
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if len(firstSetPath) == 0 {
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// remember the first path that is set
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firstSetPath = p
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}
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info, err := os.Stat(p)
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if err != nil {
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continue
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}
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if len(firstExistingPath) == 0 {
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// remember the first path that exists
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firstExistingPath = p
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}
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if info.IsDir() && info.Mode().Perm()&(1<<(uint(7))) != 0 {
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// return first path that is writeable
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return p
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}
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}
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// If none are writeable, return first location that exists
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if len(firstExistingPath) > 0 {
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return firstExistingPath
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}
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// If none exist, return first location that is set
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if len(firstSetPath) > 0 {
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return firstSetPath
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}
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// We've got nothing
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return ""
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}
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return os.Getenv("HOME")
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}
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