/
access-main.go
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/
access-main.go
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/*
* Minio Client, (C) 2015 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 (
"encoding/json"
"strings"
"github.com/fatih/color"
"github.com/minio/cli"
"github.com/minio/mc/pkg/console"
"github.com/minio/minio-xl/pkg/probe"
)
var (
accessFlags = []cli.Flag{
cli.BoolFlag{
Name: "help, h",
Usage: "Help of access.",
},
}
)
// Set access permissions.
var accessCmd = cli.Command{
Name: "access",
Usage: "Manage bucket access permissions.",
Action: mainAccess,
Flags: append(accessFlags, globalFlags...),
CustomHelpTemplate: `Name:
mc {{.Name}} - {{.Usage}}
USAGE:
mc {{.Name}} [FLAGS] set PERMISSION TARGET [TARGET...]
mc {{.Name}} [FLAGS] get TARGET [TARGET...]
PERMISSION:
Allowed permissions are: [private, readonly, public, authorized].
FLAGS:
{{range .Flags}}{{.}}
{{end}}
EXAMPLES:
1. Set bucket to "private" on Amazon S3 cloud storage.
$ mc {{.Name}} set private s3/burningman2011
2. Set bucket to "public" on Amazon S3 cloud storage.
$ mc {{.Name}} set public s3/shared
3. Set bucket to "authenticated" on Amazon S3 cloud storage to provide read access to IAM Authenticated Users group.
$ mc {{.Name}} set authorized s3/shared-authenticated
4. Get bucket permissions.
$ mc {{.Name}} get s3/shared
5. Get bucket permissions.
$ mc {{.Name}} get gcs/miniocloud
`,
}
// accessMessage is container for access command on bucket success and failure messages.
type accessMessage struct {
Operation string `json:"operation"`
Status string `json:"status"`
Bucket string `json:"bucket"`
Perms accessPerms `json:"permission"`
}
// String colorized access message.
func (s accessMessage) String() string {
if s.Operation == "set" {
return console.Colorize("Access",
"Set access permission ‘"+string(s.Perms)+"’ updated successfully for ‘"+s.Bucket+"’")
}
if s.Operation == "get" {
return console.Colorize("Access",
"Access permission for ‘"+s.Bucket+"’"+" is ‘"+string(s.Perms)+"’")
}
// nothing to print
return ""
}
// JSON jsonified access message.
func (s accessMessage) JSON() string {
accessJSONBytes, err := json.Marshal(s)
fatalIf(probe.NewError(err), "Unable to marshal into JSON.")
return string(accessJSONBytes)
}
// checkAccessSyntax check for incoming syntax.
func checkAccessSyntax(ctx *cli.Context) {
if !ctx.Args().Present() {
cli.ShowCommandHelpAndExit(ctx, "access", 1) // last argument is exit code.
}
if len(ctx.Args()) < 2 {
cli.ShowCommandHelpAndExit(ctx, "access", 1) // last argument is exit code.
}
switch ctx.Args().First() {
case "set":
if len(ctx.Args().Tail()) < 2 {
cli.ShowCommandHelpAndExit(ctx, "access", 1) // last argument is exit code.
}
perms := accessPerms(ctx.Args().Tail().Get(0))
if !perms.isValidAccessPERM() {
fatalIf(errDummy().Trace(),
"Unrecognized permission ‘"+perms.String()+"’. Allowed values are [private, public, readonly, authorized].")
}
for _, arg := range ctx.Args().Tail().Tail() {
if strings.TrimSpace(arg) == "" {
fatalIf(errInvalidArgument().Trace(), "Unable to validate empty argument.")
}
}
case "get":
if len(ctx.Args().Tail()) < 1 {
cli.ShowCommandHelpAndExit(ctx, "access", 1) // last argument is exit code.
}
}
}
// doSetAccess do set access.
func doSetAccess(targetURL string, targetPERMS accessPerms) *probe.Error {
clnt, err := newClient(targetURL)
if err != nil {
return err.Trace(targetURL)
}
if err = clnt.SetBucketAccess(targetPERMS.String()); err != nil {
return err.Trace(targetURL, targetPERMS.String())
}
return nil
}
// doGetAccess do get access.
func doGetAccess(targetURL string) (perms accessPerms, err *probe.Error) {
clnt, err := newClient(targetURL)
if err != nil {
return "", err.Trace(targetURL)
}
acl, err := clnt.GetBucketAccess()
if err != nil {
return "", err.Trace(targetURL)
}
return aclToPerms(acl), nil
}
func mainAccess(ctx *cli.Context) {
// Set global flags from context.
setGlobalsFromContext(ctx)
// check 'access' cli arguments.
checkAccessSyntax(ctx)
// Additional command speific theme customization.
console.SetColor("Access", color.New(color.FgGreen, color.Bold))
switch ctx.Args().First() {
case "set":
perms := accessPerms(ctx.Args().Tail().First())
URLs := ctx.Args().Tail().Tail()
for _, targetURL := range URLs {
err := doSetAccess(targetURL, perms)
// Upon error, print and continue.
if err != nil {
errorIf(err.Trace(targetURL, string(perms)),
"Unable to set access permission ‘"+string(perms)+"’ for ‘"+targetURL+"’.")
continue
}
printMsg(accessMessage{
Status: "success",
Operation: "set",
Bucket: targetURL,
Perms: perms,
})
}
case "get":
URLs := ctx.Args().Tail()
for _, targetURL := range URLs {
perms, err := doGetAccess(targetURL)
if err != nil {
errorIf(err.Trace(targetURL), "Unable to get access permission for ‘"+targetURL+"’.")
continue
}
printMsg(accessMessage{
Status: "success",
Operation: "get",
Bucket: targetURL,
Perms: perms,
})
}
}
}