func getSTH(logClient *client.LogClient) {
	sth, err := logClient.GetSTH()
	if err != nil {
		log.Fatal(err)
	}
	// Display the STH
	when := ctTimestampToTime(sth.Timestamp)
	fmt.Printf("%v: Got STH for %v log (size=%d) at %v, hash %x\n", when, sth.Version, sth.TreeSize, *logURI, sth.SHA256RootHash)
	fmt.Printf("%v\n", signatureToString(&sth.TreeHeadSignature))
}
Beispiel #2
0
func downloadLog(ctLogUrl *url.URL, ctLog *client.LogClient, db *sqldb.EntriesDatabase) error {
	if *config.OffsetByte > 0 {
		return fmt.Errorf("Cannot set offsetByte for CT log downloads")
	}

	fmt.Printf("Fetching signed tree head... ")
	sth, err := ctLog.GetSTH()
	if err != nil {
		return err
	}

	// Set pointer in DB, now that we've verified the log works
	err = db.SetLog(fmt.Sprintf("%s%s", ctLogUrl.Host, ctLogUrl.Path))
	if err != nil {
		log.Fatalf("unable to set Certificate Log: %s", err)
	}

	var origCount uint64
	// Now we're OK to use the DB
	if *config.Offset > 0 {
		log.Printf("Starting from offset %d", *config.Offset)
		origCount = *config.Offset
	} else {
		log.Printf("Counting existing entries... ")
		origCount, err = db.Count()
		if err != nil {
			err = fmt.Errorf("Failed to read entries file: %s", err)
			return err
		}
	}

	fmt.Printf("%d total entries at %s\n", sth.TreeSize, sqldb.Uint64ToTimestamp(sth.Timestamp).Format(time.ANSIC))
	if origCount == sth.TreeSize {
		fmt.Printf("Nothing to do\n")
		return nil
	}

	endPos := sth.TreeSize
	if *config.Limit > 0 && endPos > origCount+*config.Limit {
		endPos = origCount + *config.Limit
	}

	fmt.Printf("Going from %d to %d\n", origCount, endPos)

	entryChan := make(chan ct.LogEntry, 100)
	statusChan := make(chan OperationStatus, 1)
	wg := new(sync.WaitGroup)

	displayProgress(statusChan, wg)
	numWorkers := *config.NumThreads * runtime.NumCPU()
	for i := 0; i < numWorkers; i++ {
		go insertCTWorker(entryChan, db, wg)
	}
	_, err = downloadCTRangeToChannel(ctLog, entryChan, statusChan, int64(origCount), int64(endPos))
	wg.Wait()

	clearLine()
	if err != nil {
		err = fmt.Errorf("Error while downloading: %s", err)
		return err
	}

	return nil
}