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/*
* rpc_client_daemon.c
* -------------------
* Remote procedure call transport over a socket to a daemon.
*
* Copyright (c) 2016, NORDUnet A/S All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* - Neither the name of the NORDUnet nor the names of its contributors may
* be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <stdio.h>
#include <string.h>
#include <netinet/in.h>
#include <unistd.h>
#include <sys/un.h>
#include "hal.h"
#include "hal_internal.h"
static int sock = -1;
hal_error_t hal_rpc_client_transport_init(void)
{
struct sockaddr_un name;
int ret;
sock = socket(AF_UNIX, SOCK_SEQPACKET, 0);
if (sock == -1)
return perror("socket"), HAL_ERROR_RPC_TRANSPORT;
memset(&name, 0, sizeof(struct sockaddr_un));
name.sun_family = AF_UNIX;
strncpy(name.sun_path, HAL_CLIENT_DAEMON_DEFAULT_SOCKET_NAME, sizeof(name.sun_path) - 1);
ret = connect(sock, (const struct sockaddr *) &name, sizeof(struct sockaddr_un));
if (ret == -1)
return perror("connect"), HAL_ERROR_RPC_TRANSPORT;
return HAL_OK;
}
hal_error_t hal_rpc_client_transport_close(void)
{
int ret = close(sock);
sock = -1;
if (ret != 0)
return perror("close"), HAL_ERROR_RPC_TRANSPORT;
return HAL_OK;
}
hal_error_t hal_rpc_send(const uint8_t * const buf, const size_t len)
{
ssize_t ret = send(sock, (const void *)buf, len, 0);
return (ret == -1) ? HAL_ERROR_RPC_TRANSPORT : HAL_OK;
}
hal_error_t hal_rpc_recv(uint8_t * const buf, size_t * const len)
{
ssize_t ret = recv(sock, (void *)buf, *len, 0);
if (ret == -1)
return HAL_ERROR_RPC_TRANSPORT;
*len = (size_t)ret;
return HAL_OK;
}
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