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/*
* Copyright (c) 2016-2017, Marie Helene Kvello-Aune
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* thislist of conditions and the following disclaimer.
*
* 2. 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.
*
* 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.
*
* $FreeBSD$
*/
#include <sys/ioctl.h>
#include <net/if.h>
#include <errno.h>
#include <ifaddrs.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include "libifconfig.h" // Needed for ifconfig_errstate
#include "libifconfig_internal.h"
int
ifconfig_getifaddrs(ifconfig_handle_t *h)
{
int ret;
if (h->ifap == NULL) {
ret = getifaddrs(&h->ifap);
return (ret);
} else {
return (0);
}
}
int
ifconfig_ioctlwrap(ifconfig_handle_t *h, const int addressfamily,
unsigned long request, void *data)
{
int s;
if (ifconfig_socket(h, addressfamily, &s) != 0) {
return (-1);
}
if (ioctl(s, request, data) != 0) {
h->error.errtype = IOCTL;
h->error.ioctl_request = request;
h->error.errcode = errno;
return (-1);
}
return (0);
}
/*
* Function to get socket for the specified address family.
* If the socket doesn't already exist, attempt to create it.
*/
int
ifconfig_socket(ifconfig_handle_t *h, const int addressfamily, int *s)
{
if (addressfamily > AF_MAX) {
h->error.errtype = SOCKET;
h->error.errcode = EINVAL;
return (-1);
}
if (h->sockets[addressfamily] != -1) {
*s = h->sockets[addressfamily];
return (0);
}
/* We don't have a socket of that type available. Create one. */
h->sockets[addressfamily] = socket(addressfamily, SOCK_DGRAM, 0);
if (h->sockets[addressfamily] == -1) {
h->error.errtype = SOCKET;
h->error.errcode = errno;
return (-1);
}
*s = h->sockets[addressfamily];
return (0);
}
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