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minio/dockerscripts/check-user.go

136 lines
3.3 KiB

// +build ignore
/*
* MinIO Cloud Storage, (C) 2019 MinIO, Inc.
*
* 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 main
import (
"fmt"
"log"
"os"
"os/exec"
"os/user"
"syscall"
"github.com/minio/cli"
minio "github.com/minio/minio/cmd"
)
var defaultUserGroup string
func init() {
username := os.Getenv("MINIO_USERNAME")
groupname := os.Getenv("MINIO_GROUPNAME")
defaultUserGroup = username + ":" + groupname
}
func getUserGroup(path string) (string, error) {
fi, err := os.Stat(minio.PathJoin(path, ".minio.sys"))
if err != nil {
// Fresh directory we should default to what was requested by user.
if os.IsNotExist(err) {
cmd := exec.Command("chown", "-R", defaultUserGroup, path)
if err = cmd.Run(); err != nil {
return "", err
}
return defaultUserGroup, nil
}
return "", err
}
stat, ok := fi.Sys().(*syscall.Stat_t)
if !ok {
// Unable to figure out uid/gid, default to defaultUserGroup
return defaultUserGroup, nil
}
u, err := user.LookupId(fmt.Sprintf("%d", stat.Uid))
if err != nil {
return fmt.Sprintf("%d:%d", stat.Uid, stat.Gid), nil
}
g, err := user.LookupGroupId(fmt.Sprintf("%d", stat.Gid))
if err != nil {
return fmt.Sprintf("%d:%d", stat.Uid, stat.Gid), nil
}
return fmt.Sprintf("%s:%s", u.Username, g.Name), nil
}
func main() {
app := cli.NewApp()
app.Flags = append(minio.ServerFlags, minio.GlobalFlags...)
app.Action = func(ctx *cli.Context) {
// Fetch address option
serverAddr := ctx.GlobalString("address")
if serverAddr == "" || serverAddr == ":9000" {
serverAddr = ctx.String("address")
}
if ctx.Args().First() == "help" {
cli.ShowCommandHelpAndExit(ctx, "check-user", 1)
}
if ctx.Args().First() != "minio" {
cli.ShowCommandHelpAndExit(ctx, "check-user", 1)
}
args := cli.Args(ctx.Args().Tail())
if !args.Present() {
cli.ShowCommandHelpAndExit(ctx, "check-user", 1)
}
var ug string
var err error
switch args.First() {
case "gateway":
args = cli.Args(args.Tail())
if args.First() != "nas" {
fmt.Println(defaultUserGroup)
return
}
args = cli.Args(args.Tail())
if args.First() == "" {
fmt.Println("")
return
}
ug, err = getUserGroup(args.First())
if err != nil {
log.Fatalln(err)
}
case "server":
var setArgs [][]string
setArgs, err = minio.GetAllSets(args.Tail()...)
if err != nil {
log.Fatalln(err)
}
var endpoints minio.EndpointList
_, endpoints, _, err = minio.CreateEndpoints(serverAddr, setArgs...)
if err != nil {
log.Fatalln(err)
}
for _, endpoint := range endpoints {
if !endpoint.IsLocal {
continue
}
ug, err = getUserGroup(endpoint.Path)
if err != nil {
log.Fatalln(err)
}
break
}
default:
cli.ShowCommandHelpAndExit(ctx, "check-user", 1)
}
fmt.Println(ug)
}
if err := app.Run(os.Args); err != nil {
log.Fatalln(err)
}
}