forked from minio/mc
/
access-main.go
180 lines (154 loc) · 5.17 KB
/
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/pkg/probe"
)
// Set access permissions.
var accessCmd = cli.Command{
Name: "access",
Usage: "Set or get access permissions.",
Action: mainAccess,
CustomHelpTemplate: `Name:
mc {{.Name}} - {{.Usage}}
USAGE:
mc {{.Name}} set PERMISSION TARGET [TARGET ...]
mc {{.Name}} get TARGET [TARGET ...]
PERMISSION = private | readonly | public | authorized {{if .Description}}
DESCRIPTION:
{{.Description}}{{end}}
EXAMPLES:
1. Set bucket to "private" on Amazon S3 cloud storage.
$ mc {{.Name}} set private https://s3.amazonaws.com/burningman2011
2. Set bucket to "public" on Amazon S3 cloud storage.
$ mc {{.Name}} set public https://s3.amazonaws.com/shared
3. Set bucket to "authenticated" on Amazon S3 cloud storage to provide read access to IAM Authenticated Users group.
$ mc {{.Name}} set authorized https://s3.amazonaws.com/shared-authenticated
4. Get bucket permissions.
$ mc {{.Name}} get https://s3.amazonaws.com/shared
`,
}
// 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 bucketPerms `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)
}
func checkAccessSyntax(ctx *cli.Context) {
if !ctx.Args().Present() || ctx.Args().First() == "help" {
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().Get(0) {
case "set":
if len(ctx.Args().Tail()) < 2 {
cli.ShowCommandHelpAndExit(ctx, "access", 1) // last argument is exit code
}
perms := bucketPerms(ctx.Args().Tail().Get(0))
if !perms.isValidBucketPERM() {
fatalIf(errDummy().Trace(),
"Unrecognized permission ‘"+perms.String()+"’. Allowed values are [private, public, readonly].")
}
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
}
}
}
func mainAccess(ctx *cli.Context) {
checkAccessSyntax(ctx)
console.SetCustomTheme(map[string]*color.Color{
"Access": color.New(color.FgGreen, color.Bold),
})
config := mustGetMcConfig()
switch ctx.Args().Get(0) {
case "set":
perms := bucketPerms(ctx.Args().Tail().Get(0))
for _, arg := range ctx.Args().Tail().Tail() {
targetURL := getAliasURL(arg, config.Aliases)
fatalIf(doSetAccess(targetURL, perms).Trace(targetURL, string(perms)), "Unable to set access permission ‘"+string(perms)+"’ for ‘"+targetURL+"’.")
Prints("%s\n", AccessMessage{
Operation: "set",
Status: "success",
Bucket: targetURL,
Perms: perms,
})
}
case "get":
for _, arg := range ctx.Args().Tail() {
targetURL := getAliasURL(arg, config.Aliases)
perms, err := doGetAccess(targetURL)
fatalIf(err.Trace(targetURL), "Unable to get access permission for ‘"+targetURL+"’.")
Prints("%s\n", AccessMessage{
Operation: "get",
Status: "success",
Bucket: targetURL,
Perms: perms,
})
}
}
}
func doSetAccess(targetURL string, targetPERMS bucketPerms) *probe.Error {
clnt, err := target2Client(targetURL)
if err != nil {
return err.Trace(targetURL)
}
if err = clnt.SetBucketACL(targetPERMS.String()); err != nil {
return err.Trace(targetURL, targetPERMS.String())
}
return nil
}
func doGetAccess(targetURL string) (perms bucketPerms, err *probe.Error) {
clnt, err := target2Client(targetURL)
if err != nil {
return "", err.Trace(targetURL)
}
acl, err := clnt.GetBucketACL()
if err != nil {
return "", err.Trace(targetURL)
}
return aclToPerms(acl), nil
}