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/*
* Copyright (c) 2017 Apple Computer, Inc. All rights reserved.
*
* @APPLE_LICENSE_HEADER_START@
*
* The contents of this file constitute Original Code as defined in and
* are subject to the Apple Public Source License Version 1.1 (the
* "License"). You may not use this file except in compliance with the
* License. Please obtain a copy of the License at
* http://www.apple.com/publicsource and read it before using this file.
*
* This Original Code and all software distributed under the License are
* distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
* License for the specific language governing rights and limitations
* under the License.
*
* @APPLE_LICENSE_HEADER_END@
*/
/*
* iffake.c
* - manage fake interfaces that pretend to be e.g. ethernet
*/
/*
* Modification History:
*
* January 17, 2017 Dieter Siegmund (dieter@apple.com)
* - created
*/
#include <sys/param.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <stdlib.h>
#include <unistd.h>
#include <net/ethernet.h>
#include <net/if.h>
#include <net/if_var.h>
#include <net/if_fake_var.h>
#include <net/route.h>
#include <ctype.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <err.h>
#include <errno.h>
#include "ifconfig.h"
static void
fake_status(int s)
{
struct ifdrv ifd;
struct if_fake_request iffr;
bzero((char *)&ifd, sizeof(ifd));
bzero((char *)&iffr, sizeof(iffr));
strlcpy(ifd.ifd_name, ifr.ifr_name, sizeof(ifd.ifd_name));
ifd.ifd_cmd = IF_FAKE_G_CMD_GET_PEER;
ifd.ifd_len = sizeof(iffr);
ifd.ifd_data = &iffr;
if (ioctl(s, SIOCGDRVSPEC, &ifd) < 0) {
return;
}
if (iffr.iffr_peer_name[0] == '\0') {
printf("\tpeer: <none>\n");
} else {
printf("\tpeer: %s\n", iffr.iffr_peer_name);
}
return;
}
static void
set_peer(int s, const char * operation, const char * val)
{
struct ifdrv ifd;
struct if_fake_request iffr;
bzero((char *)&ifd, sizeof(ifd));
bzero((char *)&iffr, sizeof(iffr));
strlcpy(ifd.ifd_name, ifr.ifr_name, sizeof(ifd.ifd_name));
ifd.ifd_cmd = IF_FAKE_S_CMD_SET_PEER;
ifd.ifd_len = sizeof(iffr);
ifd.ifd_data = &iffr;
if (val != NULL) {
strlcpy(iffr.iffr_peer_name, val, sizeof(iffr.iffr_peer_name));
}
if (ioctl(s, SIOCSDRVSPEC, &ifd) < 0) {
err(1, "SIOCDRVSPEC %s peer", operation);
}
return;
}
static
DECL_CMD_FUNC(setpeer, val, d)
{
set_peer(s, "set", val);
return;
}
static
DECL_CMD_FUNC(unsetpeer, val, d)
{
set_peer(s, "unset", NULL);
return;
}
static struct cmd fake_cmds[] = {
DEF_CLONE_CMD_ARG("peer", setpeer),
DEF_CMD_OPTARG("-peer", unsetpeer),
};
static struct afswtch af_fake = {
.af_name = "af_fake",
.af_af = AF_UNSPEC,
.af_other_status = fake_status,
};
static __constructor void
fake_ctor(void)
{
#define N(a) (sizeof(a) / sizeof(a[0]))
int i;
for (i = 0; i < N(fake_cmds); i++)
cmd_register(&fake_cmds[i]);
af_register(&af_fake);
#undef N
}
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