97 lines
2.7 KiB
Go
97 lines
2.7 KiB
Go
/*
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* Minio Cloud Storage, (C) 2015, 2016 Minio, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package main
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import (
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"crypto/rand"
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"encoding/base64"
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"fmt"
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"regexp"
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"github.com/minio/minio/pkg/probe"
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)
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// credential container for access and secret keys.
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type credential struct {
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AccessKeyID string `json:"accessKey"`
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SecretAccessKey string `json:"secretKey"`
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}
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// stringer colorized access keys.
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func (a credential) String() string {
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accessStr := colorMagenta("AccessKey: ") + colorWhite(a.AccessKeyID)
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secretStr := colorMagenta("SecretKey: ") + colorWhite(a.SecretAccessKey)
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return fmt.Sprint(accessStr + " " + secretStr)
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}
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const (
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minioAccessID = 20
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minioSecretID = 40
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)
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// isValidSecretKey - validate secret key.
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var isValidSecretKey = regexp.MustCompile(`^.{8,40}$`)
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// isValidAccessKey - validate access key.
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var isValidAccessKey = regexp.MustCompile(`^[a-zA-Z0-9\\-\\.\\_\\~]{5,20}$`)
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// mustGenAccessKeys - must generate access credentials.
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func mustGenAccessKeys() (creds credential) {
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creds, err := genAccessKeys()
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fatalIf(err.Trace(), "Unable to generate access keys.", nil)
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return creds
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}
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// genAccessKeys - generate access credentials.
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func genAccessKeys() (credential, *probe.Error) {
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accessKeyID, err := genAccessKeyID()
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if err != nil {
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return credential{}, err.Trace()
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}
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secretAccessKey, err := genSecretAccessKey()
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if err != nil {
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return credential{}, err.Trace()
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}
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creds := credential{
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AccessKeyID: string(accessKeyID),
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SecretAccessKey: string(secretAccessKey),
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}
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return creds, nil
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}
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// genAccessKeyID - generate random alpha numeric value using only uppercase characters
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// takes input as size in integer
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func genAccessKeyID() ([]byte, *probe.Error) {
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alpha := make([]byte, minioAccessID)
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if _, e := rand.Read(alpha); e != nil {
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return nil, probe.NewError(e)
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}
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for i := 0; i < minioAccessID; i++ {
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alpha[i] = alphaNumericTable[alpha[i]%byte(len(alphaNumericTable))]
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}
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return alpha, nil
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}
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// genSecretAccessKey - generate random base64 numeric value from a random seed.
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func genSecretAccessKey() ([]byte, *probe.Error) {
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rb := make([]byte, minioSecretID)
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if _, e := rand.Read(rb); e != nil {
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return nil, probe.NewError(e)
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}
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return []byte(base64.StdEncoding.EncodeToString(rb))[:minioSecretID], nil
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}
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