mirror of
https://github.com/etcd-io/etcd.git
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8e821cdc70
This commit lets etcdserver check permission during its log applying phase. With this change, permission checking of operations is supported. Currently, put and range are supported. In addition, multi key permission check of range isn't supported yet.
77 lines
1.7 KiB
Go
77 lines
1.7 KiB
Go
// Copyright 2016 The etcd Authors
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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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package auth
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// CAUTION: This randum number based token mechanism is only for testing purpose.
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// JWT based mechanism will be added in the near future.
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import (
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"crypto/rand"
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"math/big"
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"sync"
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)
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const (
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letters = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
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defaultSimpleTokenLength = 16
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)
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var (
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simpleTokensMu sync.RWMutex
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simpleTokens map[string]string // token -> username
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)
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func init() {
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simpleTokens = make(map[string]string)
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}
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func genSimpleToken() (string, error) {
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ret := make([]byte, defaultSimpleTokenLength)
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for i := 0; i < defaultSimpleTokenLength; i++ {
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bInt, err := rand.Int(rand.Reader, big.NewInt(int64(len(letters))))
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if err != nil {
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return "", err
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}
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ret[i] = letters[bInt.Int64()]
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}
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return string(ret), nil
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}
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func genSimpleTokenForUser(username string) (string, error) {
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var token string
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var err error
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for {
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// generating random numbers in RSM would't a good idea
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token, err = genSimpleToken()
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if err != nil {
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return "", err
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}
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if _, ok := simpleTokens[token]; !ok {
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break
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}
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}
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simpleTokensMu.Lock()
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simpleTokens[token] = username
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simpleTokensMu.Unlock()
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return token, nil
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}
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