Exemplos de read_TCP_length em C++ (Cpp)

Exemplo n.º 1

Arquivo: TCP_server.c Projeto: ameenross/toxcore

/* return length of received packet on success.
 * return 0 if could not read any packet.
 * return -1 on failure (connection must be killed).
 */
int read_packet_TCP_secure_connection(sock_t sock, uint16_t *next_packet_length, const uint8_t *shared_key,
                                      uint8_t *recv_nonce, uint8_t *data, uint16_t max_len)
{
    if (*next_packet_length == 0) {
        uint16_t len = read_TCP_length(sock);

        if (len == (uint16_t)~0)
            return -1;

        if (len == 0)
            return 0;

        *next_packet_length = len;
    }

    if (max_len + crypto_box_MACBYTES < *next_packet_length)
        return -1;

    uint8_t data_encrypted[*next_packet_length];
    int len_packet = read_TCP_packet(sock, data_encrypted, *next_packet_length);

    if (len_packet != *next_packet_length)
        return 0;

    *next_packet_length = 0;

    int len = decrypt_data_symmetric(shared_key, recv_nonce, data_encrypted, len_packet, data);

    if (len + crypto_box_MACBYTES != len_packet)
        return -1;

    increment_nonce(recv_nonce);

    return len;
}

Exemplo n.º 2

Arquivo: TCP_server.c Projeto: initramfs/toxcore

/* return length of received packet on success.
 * return 0 if could not read any packet.
 * return -1 on failure (connection must be killed).
 */
int read_packet_TCP_secure_connection(Socket sock, uint16_t *next_packet_length, const uint8_t *shared_key,
                                      uint8_t *recv_nonce, uint8_t *data, uint16_t max_len)
{
    if (*next_packet_length == 0) {
        uint16_t len = read_TCP_length(sock);

        if (len == (uint16_t)~0) {
            return -1;
        }

        if (len == 0) {
            return 0;
        }

        *next_packet_length = len;
    }

    if (max_len + CRYPTO_MAC_SIZE < *next_packet_length) {
        return -1;
    }

    VLA(uint8_t, data_encrypted, *next_packet_length);
    int len_packet = read_TCP_packet(sock, data_encrypted, *next_packet_length);

    if (len_packet != *next_packet_length) {
        return 0;
    }

    *next_packet_length = 0;

    int len = decrypt_data_symmetric(shared_key, recv_nonce, data_encrypted, len_packet, data);

    if (len + CRYPTO_MAC_SIZE != len_packet) {
        return -1;
    }

    increment_nonce(recv_nonce);

    return len;
}