int32_t Mbedtls_Pkcs11_Recv()

in platform/posix/transport/src/mbedtls_pkcs11_posix.c [889:928]

• 32 lines of code
• 6 McCabe index (conditional complexity)

int32_t Mbedtls_Pkcs11_Recv( NetworkContext_t * pNetworkContext,
                             void * pBuffer,
                             size_t bytesToRecv )
{
    MbedtlsPkcs11Context_t * pMbedtlsPkcs11Context = NULL;
    int32_t tlsStatus = 0;

    assert( ( pNetworkContext != NULL ) && ( pNetworkContext->pParams != NULL ) );

    pMbedtlsPkcs11Context = pNetworkContext->pParams;
    tlsStatus = ( int32_t ) mbedtls_ssl_read( &( pMbedtlsPkcs11Context->context ),
                                              pBuffer,
                                              bytesToRecv );

    if( ( tlsStatus == MBEDTLS_ERR_SSL_TIMEOUT ) ||
        ( tlsStatus == MBEDTLS_ERR_SSL_WANT_READ ) ||
        ( tlsStatus == MBEDTLS_ERR_SSL_WANT_WRITE ) )
    {
        LogDebug( ( "Failed to read data. However, a read can be retried on this error. "
                    "mbedTLSError= %s : %s.",
                    mbedtlsHighLevelCodeOrDefault( tlsStatus ),
                    mbedtlsLowLevelCodeOrDefault( tlsStatus ) ) );

        /* Mark these set of errors as a timeout. The libraries may retry read
         * on these errors. */
        tlsStatus = 0;
    }
    else if( tlsStatus < 0 )
    {
        LogError( ( "Failed to read data: mbedTLSError= %s : %s.",
                    mbedtlsHighLevelCodeOrDefault( tlsStatus ),
                    mbedtlsLowLevelCodeOrDefault( tlsStatus ) ) );
    }
    else
    {
        /* Empty else marker. */
    }

    return tlsStatus;
}