/
config-host-main.go
275 lines (239 loc) · 8.42 KB
/
config-host-main.go
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package main
import (
"encoding/json"
"fmt"
"regexp"
"strings"
"github.com/fatih/color"
"github.com/minio/cli"
"github.com/minio/mc/pkg/console"
"github.com/minio/minio/pkg/probe"
"github.com/minio/minio/pkg/quick"
)
var configHostCmd = cli.Command{
Name: "host",
Usage: "List, modify and remove hosts in configuration file.",
Action: mainConfigHost,
CustomHelpTemplate: `NAME:
mc config {{.Name}} - {{.Usage}}
USAGE:
mc config {{.Name}} OPERATION [ARGS...]
OPERATION = add | list | remove
EXAMPLES:
1. Add host configuration for a URL, using default signature V4. For security reasons turn off bash history
$ set +o history
$ mc config {{.Name}} add s3.amazonaws.com BKIKJAA5BMMU2RHO6IBB V7f1CwQqAcwo80UEIJEjc5gVQUSSx5ohQ9GSrr12
$ set -o history
2. Add host configuration for a URL, using s3 api v2. For security reasons turn off bash history
$ set +o history
$ mc config {{.Name}} add s3.amazonaws.com BKIKJAA5BMMU2RHO6IBB V7f1CwQqAcwo80UEIJEjc5gVQUSSx5ohQ9GSrr12 S3v2
$ set -o history
3. List all hosts.
$ mc config {{.Name}} list
4. Remove host config.
$ mc config {{.Name}} remove s3.amazonaws.com
`,
}
// HostMessage container for content message structure
type HostMessage struct {
op string
Host string `json:"host"`
AccessKeyID string `json:"accessKeyId,omitempty"`
SecretAccessKey string `json:"secretAccessKey,omitempty"`
API string `json:"api,omitempty"`
}
// String colorized host message
func (a HostMessage) String() string {
if a.op == "list" {
message := console.Colorize("Host", fmt.Sprintf("[%s] ", a.Host))
if a.AccessKeyID != "" || a.SecretAccessKey != "" {
message += console.Colorize("AccessKeyID", fmt.Sprintf("<- %s,", a.AccessKeyID))
message += console.Colorize("SecretAccessKey", fmt.Sprintf(" %s,", a.SecretAccessKey))
message += console.Colorize("API", fmt.Sprintf(" %s", a.API))
}
return message
}
if a.op == "remove" {
return console.Colorize("HostMessage", "Removed host ‘"+a.Host+"’ successfully.")
}
if a.op == "add" {
return console.Colorize("HostMessage", "Added host ‘"+a.Host+"’ successfully.")
}
// should never reach here
return ""
}
// JSON jsonified host message
func (a HostMessage) JSON() string {
jsonMessageBytes, e := json.Marshal(a)
fatalIf(probe.NewError(e), "Unable to marshal into JSON.")
return string(jsonMessageBytes)
}
func checkConfigHostSyntax(ctx *cli.Context) {
// show help if nothing is set
if !ctx.Args().Present() || ctx.Args().First() == "help" {
cli.ShowCommandHelpAndExit(ctx, "host", 1) // last argument is exit code
}
if strings.TrimSpace(ctx.Args().First()) == "" {
cli.ShowCommandHelpAndExit(ctx, "host", 1) // last argument is exit code
}
if len(ctx.Args().Tail()) > 4 {
fatalIf(errDummy().Trace(), "Incorrect number of arguments to host command")
}
switch strings.TrimSpace(ctx.Args().First()) {
case "add":
if len(ctx.Args().Tail()) < 3 || len(ctx.Args().Tail()) > 4 {
fatalIf(errInvalidArgument().Trace(), "Incorrect number of arguments for add host command.")
}
case "remove":
if len(ctx.Args().Tail()) != 1 {
fatalIf(errInvalidArgument().Trace(), "Incorrect number of arguments for remove host command.")
}
case "list":
default:
cli.ShowCommandHelpAndExit(ctx, "host", 1) // last argument is exit code
}
}
func setConfigHostPalette(style string) {
console.SetCustomPalette(map[string]*color.Color{
"Host": color.New(color.FgCyan, color.Bold),
"API": color.New(color.FgYellow, color.Bold),
"HostMessage": color.New(color.FgGreen, color.Bold),
"AccessKeyID": color.New(color.FgBlue, color.Bold),
"SecretAccessKey": color.New(color.FgRed, color.Bold),
})
if style == "light" {
console.SetCustomPalette(map[string]*color.Color{
"Host": color.New(color.FgWhite, color.Bold),
"API": color.New(color.FgWhite, color.Bold),
"HostMessage": color.New(color.FgWhite, color.Bold),
"AccessKeyID": color.New(color.FgWhite, color.Bold),
"SecretAccessKey": color.New(color.FgWhite, color.Bold),
})
return
}
/// Add more styles here
if style == "nocolor" {
// All coloring options exhausted, setting nocolor safely
console.SetNoColor()
}
}
func mainConfigHost(ctx *cli.Context) {
checkConfigHostSyntax(ctx)
setConfigHostPalette(ctx.GlobalString("colors"))
arg := ctx.Args().First()
tailArgs := ctx.Args().Tail()
switch strings.TrimSpace(arg) {
case "add":
addHost(tailArgs.Get(0), tailArgs.Get(1), tailArgs.Get(2), tailArgs.Get(3))
case "remove":
removeHost(tailArgs.Get(0))
case "list":
listHosts()
}
}
func listHosts() {
config, err := newConfig()
fatalIf(err.Trace(), "Failed to initialize ‘quick’ configuration data structure.")
configPath := mustGetMcConfigPath()
err = config.Load(configPath)
fatalIf(err.Trace(configPath), "Unable to load config path")
// convert interface{} back to its original struct
newConf := config.Data().(*configV5)
for k, v := range newConf.Hosts {
Prints("%s\n", HostMessage{
op: "list",
Host: k,
AccessKeyID: v.AccessKeyID,
SecretAccessKey: v.SecretAccessKey,
API: v.API,
})
}
}
func removeHost(hostGlob string) {
if strings.TrimSpace(hostGlob) == "" {
fatalIf(errDummy().Trace(), "Alias or URL cannot be empty.")
}
if strings.TrimSpace(hostGlob) == "dl.minio.io:9000" {
fatalIf(errDummy().Trace(), "‘"+hostGlob+"’ is reserved hostname and cannot be removed.")
}
config, err := newConfig()
fatalIf(err.Trace(globalMCConfigVersion), "Failed to initialize ‘quick’ configuration data structure.")
configPath := mustGetMcConfigPath()
err = config.Load(configPath)
fatalIf(err.Trace(configPath), "Unable to load config path")
// convert interface{} back to its original struct
newConf := config.Data().(*configV5)
if _, ok := newConf.Hosts[hostGlob]; !ok {
fatalIf(errDummy().Trace(), fmt.Sprintf("Host glob ‘%s’ does not exist.", hostGlob))
}
delete(newConf.Hosts, hostGlob)
newConfig, err := quick.New(newConf)
fatalIf(err.Trace(globalMCConfigVersion), "Failed to initialize ‘quick’ configuration data structure.")
err = writeConfig(newConfig)
fatalIf(err.Trace(hostGlob), "Unable to save host glob ‘"+hostGlob+"’.")
Prints("%s\n", HostMessage{
op: "remove",
Host: hostGlob,
})
}
// isValidSecretKey - validate secret key
func isValidSecretKey(secretAccessKey string) bool {
if secretAccessKey == "" {
return true
}
regex := regexp.MustCompile("^.{40}$")
return regex.MatchString(secretAccessKey)
}
// isValidAccessKey - validate access key
func isValidAccessKey(accessKeyID string) bool {
if accessKeyID == "" {
return true
}
regex := regexp.MustCompile("^[A-Z0-9\\-\\.\\_\\~]{20}$")
return regex.MatchString(accessKeyID)
}
// addHost - add new host
func addHost(hostGlob, accessKeyID, secretAccessKey, api string) {
if strings.TrimSpace(hostGlob) == "" {
fatalIf(errDummy().Trace(), "Unable to proceed, empty arguments provided.")
}
if strings.TrimSpace(api) == "" {
api = "S3v4"
}
if strings.TrimSpace(api) != "S3v2" && strings.TrimSpace(api) != "S3v4" {
fatalIf(errInvalidArgument().Trace(), "Unrecognized version name provided, supported inputs are ‘S3v4’, ‘S3v2’")
}
config, err := newConfig()
fatalIf(err.Trace(globalMCConfigVersion), "Failed to initialize ‘quick’ configuration data structure.")
configPath := mustGetMcConfigPath()
err = config.Load(configPath)
fatalIf(err.Trace(configPath), "Unable to load config path")
if len(accessKeyID) != 0 {
if !isValidAccessKey(accessKeyID) {
fatalIf(errInvalidArgument().Trace(), "Invalid access key id provided.")
}
}
if len(secretAccessKey) != 0 {
if !isValidSecretKey(secretAccessKey) {
fatalIf(errInvalidArgument().Trace(), "Invalid secret access key provided.")
}
}
// convert interface{} back to its original struct
newConf := config.Data().(*configV5)
newConf.Hosts[hostGlob] = hostConfig{
AccessKeyID: accessKeyID,
SecretAccessKey: secretAccessKey,
API: api,
}
newConfig, err := quick.New(newConf)
fatalIf(err.Trace(globalMCConfigVersion), "Failed to initialize ‘quick’ configuration data structure.")
err = writeConfig(newConfig)
fatalIf(err.Trace(hostGlob), "Unable to save host glob ‘"+hostGlob+"’.")
Prints("%s\n", HostMessage{
op: "add",
Host: hostGlob,
AccessKeyID: accessKeyID,
SecretAccessKey: secretAccessKey,
API: api,
})
}