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112 lines
2.3 KiB
Go
112 lines
2.3 KiB
Go
/*
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Copyright 2017 The KUAR Authors
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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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http://www.apache.org/licenses/LICENSE-2.0
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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 keygen
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import (
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"context"
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"crypto/rand"
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"crypto/rsa"
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"fmt"
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"log"
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"sync"
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"golang.org/x/crypto/ssh"
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"github.com/julienschmidt/httprouter"
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)
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const maxHistory = 20
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type KeyGen struct {
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mu sync.Mutex
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config Config
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history []History
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nextHistoryID int
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nextWorkloadID int
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cancelFunc context.CancelFunc
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}
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func New() *KeyGen {
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kg := &KeyGen{
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history: []History{},
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}
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return kg
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}
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func (kg *KeyGen) AddRoutes(router *httprouter.Router, base string) {
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router.GET(base, kg.APIGet)
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router.PUT(base, kg.APIPut)
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}
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func (kg *KeyGen) Restart() {
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kg.mu.Lock()
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defer kg.mu.Unlock()
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// Cancel currently running workload
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if kg.cancelFunc != nil {
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kg.cancelFunc()
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kg.cancelFunc = nil
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}
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if kg.config.Enable {
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var ctx context.Context
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ctx, kg.cancelFunc = context.WithCancel(context.Background())
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if len(kg.config.MemQQueue) > 0 && len(kg.config.MemQServer) > 0 {
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w := newMemQWorker(ctx, kg.config, kg.WorkloadOutput)
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go w.startWork()
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} else {
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w := workload{
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id: kg.nextWorkloadID,
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c: kg.config,
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ctx: ctx,
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out: kg.WorkloadOutput,
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}
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kg.nextWorkloadID++
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go w.startWork()
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}
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}
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}
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func (kg *KeyGen) WorkloadOutput(s string) {
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kg.mu.Lock()
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defer kg.mu.Unlock()
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log.Print(s)
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kg.history = append(kg.history, History{ID: kg.nextHistoryID, Data: s})
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if len(kg.history) > maxHistory {
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kg.history = kg.history[len(kg.history)-maxHistory:]
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}
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kg.nextHistoryID++
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}
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func generateKey() string {
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privateKey, err := rsa.GenerateKey(rand.Reader, 4096)
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if err != nil {
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return fmt.Sprintf("Error generating key: %v", err)
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}
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pub, err := ssh.NewPublicKey(&privateKey.PublicKey)
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if err != nil {
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return fmt.Sprintf("Error generating ssh key: %v", err)
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}
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return ssh.FingerprintSHA256(pub)
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}
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