Example #1
0
func CredHash(cred *credence.Cred) string {
	statementCredBytes, err := proto.Marshal(cred)
	if err != nil {
		panic(err)
	}

	hash, err := openssl.SHA1(statementCredBytes)
	if err != nil {
		panic(err)
	}

	return hex.EncodeToString(hash[:])
}
Example #2
0
func StartBroadcaster(wg sync.WaitGroup) {
	defer wg.Done()

	db := models.DB()

	msgBytes := make([]byte, 524288) // 0.5 Mb

	for {
		_, err := receiver.Read(msgBytes)
		if err != nil {
			log.Print(err)
			continue
		}

		hash, err := openssl.SHA1(msgBytes)
		if err != nil {
			panic(err)
		}

		messageHash := hex.EncodeToString(hash[:])
		log.Println("Checking message", messageHash)

		var previouslySent models.SentMessage
		db.Where("message_hash = ? AND sent_at > ?", messageHash, time.Now().Add(-5*time.Minute)).First(&previouslySent)

		if db.NewRecord(previouslySent.MessageHash) {
			log.Println("Broadcasting message", messageHash)

			_, err = broadcaster.Write(msgBytes)
			if err != nil {
				panic(err)
			}

			log.Println("Pitching message", messageHash)

			_, err = pitcher.Write(msgBytes)
			if err != nil {
				panic(err)
			}

			previouslySent.SentAt = time.Now()
			previouslySent.MessageHash = messageHash
			db.Save(&previouslySent)
		} else {
			log.Println("Message already sent recently", messageHash)
		}
	}
}