// Copyright 2011 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// +build !cgo,!windows,!plan9 android osusergo,!windows,!plan9
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package user
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import (
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"errors"
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"fmt"
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"os"
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"runtime"
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"strconv"
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)
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func init() {
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groupImplemented = false
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}
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func current() (*User, error) {
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uid := currentUID()
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// $USER and /etc/passwd may disagree; prefer the latter if we can get it.
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// See issue 27524 for more information.
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u, err := lookupUserId(uid)
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if err == nil {
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return u, nil
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}
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u = &User{
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Uid: uid,
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Gid: currentGID(),
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Username: os.Getenv("USER"),
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Name: "", // ignored
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HomeDir: os.Getenv("HOME"),
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}
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// On NaCL and Android, return a dummy user instead of failing.
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switch runtime.GOOS {
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case "nacl":
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if u.Uid == "" {
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u.Uid = "1"
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}
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if u.Username == "" {
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u.Username = "nacl"
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}
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if u.HomeDir == "" {
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u.HomeDir = "/"
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}
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case "android":
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if u.Uid == "" {
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u.Uid = "1"
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}
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if u.Username == "" {
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u.Username = "android"
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}
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if u.HomeDir == "" {
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u.HomeDir = "/sdcard"
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}
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}
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// cgo isn't available, but if we found the minimum information
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// without it, use it:
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if u.Uid != "" && u.Username != "" && u.HomeDir != "" {
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return u, nil
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}
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return u, fmt.Errorf("user: Current not implemented on %s/%s", runtime.GOOS, runtime.GOARCH)
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}
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func listGroups(*User) ([]string, error) {
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if runtime.GOOS == "android" || runtime.GOOS == "aix" {
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return nil, errors.New(fmt.Sprintf("user: GroupIds not implemented on %s", runtime.GOOS))
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}
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return nil, errors.New("user: GroupIds requires cgo")
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}
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func currentUID() string {
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if id := os.Getuid(); id >= 0 {
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return strconv.Itoa(id)
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}
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// Note: Windows returns -1, but this file isn't used on
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// Windows anyway, so this empty return path shouldn't be
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// used.
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return ""
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}
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func currentGID() string {
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if id := os.Getgid(); id >= 0 {
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return strconv.Itoa(id)
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}
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return ""
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}
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