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// Copyright 2019 Google LLC. All Rights Reserved.
//
// 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.
// Hammer tool sends multiple add-pre-chain requests to Submission proxy at the same time.
package main
import (
"bytes"
"context"
"encoding/json"
"flag"
"fmt"
"io"
"log"
"net/http"
"os"
"sync"
"time"
ct "github.com/google/certificate-transparency-go"
"github.com/google/certificate-transparency-go/schedule"
"github.com/google/certificate-transparency-go/submission"
)
// Default number of submissions is intentionally low.
// After several runs, likely to hit Log rate-limits.
var (
proxyEndpoint = flag.String("proxy_endpoint", "http://localhost:5951/", "Endpoint for HTTP (host:port). Final slash is expected")
timeout = flag.Duration("duration", 0*time.Minute, "Time to run continuous flow of submissions. "+
"When this and --count both have non-zero values, submission ends upon reaching earliest restriction")
count = flag.Int("count", 10, "Total number of submissions to execute. "+
"When this and --duration both have non-zero values, submission ends upon reaching earliest restriction")
qps = flag.Int("qps", 5, "Number of requests per second")
)
func main() {
flag.Parse()
certData, err := os.ReadFile("submission/hammer/testdata/precert.der")
if err != nil {
log.Fatal(err)
}
interimData, err := os.ReadFile("submission/hammer/testdata/intermediate.der")
if err != nil {
log.Fatal(err)
}
var req ct.AddChainRequest
req.Chain = append(req.Chain, certData)
req.Chain = append(req.Chain, interimData)
postBody, err := json.Marshal(req)
if err != nil {
log.Fatalf("%v\n", err)
}
// Submission runs until timeout or count is reached. If any of those flags
// is set to 0, only other flag value is used as restriction.
ctx, cancel := context.WithCancel(context.Background())
if *timeout > 0 {
ctx, cancel = context.WithTimeout(context.Background(), *timeout)
} else if *count <= 0 {
log.Print("Both timeout and count flags set to 0. No submissions to be sent.")
return
}
leftToSend := *count
// If count flag is not set, send *qps requests each second until *timeout.
if *count <= 0 {
leftToSend = int(*timeout/time.Second) * *qps
}
var batchSize int
schedule.Every(ctx, time.Second, func(ctx context.Context) {
batchSize = *qps
if leftToSend < *qps {
batchSize = leftToSend
}
leftToSend -= batchSize
if batchSize == 0 {
cancel()
}
var wg sync.WaitGroup
wg.Add(batchSize)
for i := 0; i < batchSize; i++ {
go func() {
url := *proxyEndpoint + "ct/v1/proxy/add-pre-chain/"
resp, err := http.Post(url, "application/json", bytes.NewBuffer(postBody))
if err != nil {
log.Fatalf("http.Post(%s)=(_,%q); want (_,nil)", url, err)
}
defer func() {
if err := resp.Body.Close(); err != nil {
log.Fatalf("Unable to close response body: %v", err)
}
}()
var scts submission.SCTBatch
err = json.NewDecoder(resp.Body).Decode(&scts)
if err != nil {
responseData, err := io.ReadAll(resp.Body)
if err != nil {
log.Fatalf("Unable to parse response: %v", err)
}
log.Fatalf("Unable to decode response: %v\n%v", err, responseData)
}
fmt.Printf("%v\n", scts)
wg.Done()
}()
}
wg.Wait()
})
}
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