#define REQ_READ_SUCCESS 0
#define REQ_READ_ERROR -1

int get_request_data( http_request_data_t *hdt, char *req_contents ){
    if ( req_contents == NULL || (size_t)strnlen(req_contents, (size_t)MAX_RECV_BYTES) <= 0 )
        return REQ_READ_ERROR;
    hdt->request_size = (size_t)strnlen( req_contents, MAX_RECV_BYTES );
    hdt->request_copy = (char*)calloc( hdt->request_size, sizeof(char) );
    if ( hdt->request_copy == NULL )
        return REQ_READ_ERROR;
    if ( !str_copy(hdt->request_copy, req_contents, hdt->request_size) )
        return REQ_READ_ERROR;
    if ( (size_t)strnlen(hdt->request_copy, (size_t)MAX_RECV_BYTES) != hdt->request_size )
        return REQ_READ_ERROR;
    hdt->tok_current = strtok_r( hdt->request_copy, "\r\n", &hdt->tok_prev );
    if ( hdt->tok_current == NULL || (size_t)strnlen(hdt->tok_current, (size_t)(MAX_HEADER_LENGTH + 1)) > (size_t)MAX_HEADER_LENGTH )
        return REQ_READ_ERROR;
    if ( strstr(hdt->tok_current, "GET /") == NULL && strstr(hdt->tok_current, "POST /") == NULL )
        return REQ_READ_ERROR;
    hdt->tok_current = strtok_r( hdt->request_copy, " ", &hdt->tok_prev );
    if ( hdt->tok_current == NULL )
        return REQ_READ_ERROR;
    hdt->request_method = (char*)calloc( (size_t)strnlen(hdt->tok_current, (size_t)MAX_HEADER_LENGTH), sizeof(char) );
    if ( hdt->request_method == NULL )
        return REQ_READ_ERROR;
    if ( !str_copy(hdt->request_method, hdt->tok_current, (size_t)strnlen(hdt->tok_current, (size_t)MAX_HEADER_LENGTH)) )
        return REQ_READ_ERROR;
    if ( (size_t)strnlen(hdt->request_method, MAX_HEADER_LENGTH) != (size_t)strnlen(hdt->tok_current, (size_t)(MAX_HEADER_LENGTH + 1)) )
        return REQ_READ_ERROR;
    hdt->tok_current = strtok_r( NULL, " ", &hdt->tok_prev );
    if ( hdt->tok_current == NULL )
        return REQ_READ_ERROR;
    hdt->request_path = (char*)calloc( (size_t)strnlen(hdt->tok_current, (size_t)MAX_HEADER_LENGTH), sizeof(char) );
    if ( hdt->request_path == NULL )
        return REQ_READ_ERROR;
    if ( !str_copy(hdt->request_path, hdt->tok_current, (size_t)strnlen(hdt->tok_current, (size_t)MAX_HEADER_LENGTH)) )
        return REQ_READ_ERROR;
    if ( (size_t)strnlen(hdt->request_path, (size_t)MAX_HEADER_LENGTH) != (size_t)strnlen(hdt->tok_current, (size_t)(MAX_HEADER_LENGTH + 1)) )
        return REQ_READ_ERROR;
    memset( hdt->request_copy, 0, hdt->request_size );
    if ( !str_copy(hdt->request_copy, req_contents, hdt->request_size) )
        return REQ_READ_ERROR;
    if ( (size_t)strnlen(hdt->request_copy, (size_t)(MAX_RECV_BYTES + 1)) != hdt->request_size )
        return REQ_READ_ERROR;
    char *request_body_begin = strstr( hdt->request_copy, "\r\n\r\n" );
    if ( request_body_begin == NULL || (size_t)strnlen(request_body_begin, (size_t)(MAX_CONTENT_LENGTH + 1)) > (size_t)MAX_CONTENT_LENGTH ){
        hdt->request_body = NULL;
        return REQ_READ_SUCCESS;
    }
    hdt->tok_current = strtok_r( request_body_begin, "\r\n\r\n", &hdt->tok_prev );
    if ( hdt->tok_current == NULL || (size_t)strnlen(hdt->tok_current, (size_t)(MAX_CONTENT_LENGTH + 1)) > (size_t)MAX_CONTENT_LENGTH ){
        hdt->request_body = NULL;
        return REQ_READ_SUCCESS;
    }
    hdt->request_body = (char*)calloc( (size_t)strnlen(hdt->tok_current, (size_t)MAX_CONTENT_LENGTH), sizeof(char) );
    if ( hdt->request_body == NULL )
        return REQ_READ_ERROR;
    if ( !str_copy(hdt->request_body, hdt->tok_current, (size_t)strnlen(hdt->tok_current, (size_t)MAX_CONTENT_LENGTH)) )
        return REQ_READ_ERROR;
    if ( (size_t)strnlen(hdt->request_body, (size_t)MAX_CONTENT_LENGTH) != (size_t)strnlen(hdt->tok_current, (size_t)(MAX_CONTENT_LENGTH + 1)) )
        return REQ_READ_ERROR;
    return REQ_READ_SUCCESS;
}

void clear_request_copy( http_request_data_t *hrq ){
    if ( hrq->request_copy != NULL ){
        free( hrq->request_copy );
        hrq->request_copy = NULL;
    }
    return;
}

void clear_request_data( http_request_data_t *hreq_data ){
    if ( hreq_data->request_path != NULL ){
        free( hreq_data->request_path );
        hreq_data->request_path = NULL;
    }
    if ( hreq_data->request_body != NULL ){
        free( hreq_data->request_body );
        hreq_data->request_body = NULL;
    }
    if ( hreq_data->request_method != NULL ){
        free( hreq_data->request_method );
        hreq_data->request_method = NULL;
    }
    if ( hreq_data->request_size > 0 )
        hreq_data->request_size = 0;
    if ( hreq_data->tok_prev != NULL )
        hreq_data->tok_prev = NULL;
    if ( hreq_data->tok_current != NULL )
        hreq_data->tok_current = NULL;
    return;
}