/*      $NetBSD: netconfig.c,v 1.10 2020/04/23 00:31:51 joerg Exp $     */

/*-
* Copyright (c) 2010 The NetBSD Foundation, Inc.
* 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, this list 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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 <sys/cdefs.h>
#ifndef lint
__RCSID("$NetBSD: netconfig.c,v 1.10 2020/04/23 00:31:51 joerg Exp $");
#endif /* not lint */

#include <sys/types.h>
#include <sys/socket.h>
#include <sys/ioctl.h>

#include <arpa/inet.h>

#include <net/route.h>

#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#include <netinet/ip_icmp.h>

#include <atf-c.h>
#include <err.h>
#include <errno.h>
#include <string.h>

#include <rump/rump.h>
#include <rump/rump_syscalls.h>

#include "h_macros.h"


static void __unused
netcfg_rump_makeshmif(const char *busname, char *ifname)
{
       int rv, ifnum;

       if ((rv = rump_pub_shmif_create(busname, &ifnum)) != 0) {
#ifdef RUMPNFSD_NOATF
               err(1, "makeshmif: rump_pub_shmif_create %d", rv);
#else
               atf_tc_fail("makeshmif: rump_pub_shmif_create %d", rv);
#endif
       }
       sprintf(ifname, "shmif%d", ifnum);
}

static void __unused
netcfg_rump_if(const char *ifname, const char *addr, const char *mask)
{
       struct ifaliasreq ia;
       struct sockaddr_in *sin;
       in_addr_t inaddr, inmask;
       int s, rv;

       s = -1;
       if ((s = rump_sys_socket(PF_INET, SOCK_DGRAM, 0)) < 0) {
#ifdef RUMPNFSD_NOATF
               err(1, "if config socket");
#else
               atf_tc_fail_errno("if config socket");
#endif
       }

       inaddr = inet_addr(addr);
       inmask = inet_addr(mask);

       /* Address */
       memset(&ia, 0, sizeof(ia));
       strcpy(ia.ifra_name, ifname);
       sin = (struct sockaddr_in *)&ia.ifra_addr;
       sin->sin_family = AF_INET;
       sin->sin_len = sizeof(struct sockaddr_in);
       sin->sin_addr.s_addr = inaddr;

       /* Netmask */
       sin = (struct sockaddr_in *)&ia.ifra_mask;
       sin->sin_family = AF_INET;
       sin->sin_len = sizeof(struct sockaddr_in);
       sin->sin_addr.s_addr = inmask;

       /* Broadcast address */
       sin = (struct sockaddr_in *)&ia.ifra_broadaddr;
       sin->sin_family = AF_INET;
       sin->sin_len = sizeof(struct sockaddr_in);
       sin->sin_addr.s_addr = inaddr | ~inmask;

       rv = rump_sys_ioctl(s, SIOCAIFADDR, &ia);
       if (rv == -1) {
#ifdef RUMPNFSD_NOATF
               err(1, "SIOCAIFADDR");
#else
               atf_tc_fail_errno("SIOCAIFADDR");
#endif
       }
       rump_sys_close(s);
}

static void __unused
netcfg_rump_route(const char *dst, const char *mask, const char *gw)
{
       size_t len;
       struct {
               struct rt_msghdr m_rtm;
               uint8_t m_space[512];
       } m_rtmsg;
#define rtm m_rtmsg.m_rtm
       uint8_t *bp = m_rtmsg.m_space;
       struct sockaddr_in sinstore;
       int s, rv;

       s = rump_sys_socket(PF_ROUTE, SOCK_RAW, 0);
       if (s == -1) {
#ifdef RUMPNFSD_NOATF
               err(1, "routing socket");
#else
               atf_tc_fail_errno("routing socket");
#endif
       }

       memset(&m_rtmsg, 0, sizeof(m_rtmsg));
       rtm.rtm_type = RTM_ADD;
       rtm.rtm_flags = RTF_UP | RTF_GATEWAY | RTF_STATIC;
       rtm.rtm_version = RTM_VERSION;
       rtm.rtm_seq = 2;
       rtm.rtm_addrs = RTA_DST | RTA_GATEWAY | RTA_NETMASK;

       /* dst */
       memset(&sinstore, 0, sizeof(sinstore));
       sinstore.sin_family = AF_INET;
       sinstore.sin_len = sizeof(sinstore);
       sinstore.sin_addr.s_addr = inet_addr(dst);
       memcpy(bp, &sinstore, sizeof(sinstore));
       bp += sizeof(sinstore);

       /* gw */
       memset(&sinstore, 0, sizeof(sinstore));
       sinstore.sin_family = AF_INET;
       sinstore.sin_len = sizeof(sinstore);
       sinstore.sin_addr.s_addr = inet_addr(gw);
       memcpy(bp, &sinstore, sizeof(sinstore));
       bp += sizeof(sinstore);

       /* netmask */
       memset(&sinstore, 0, sizeof(sinstore));
       sinstore.sin_family = AF_INET;
       sinstore.sin_len = sizeof(sinstore);
       sinstore.sin_addr.s_addr = inet_addr(mask);
       memcpy(bp, &sinstore, sizeof(sinstore));
       bp += sizeof(sinstore);

       len = bp - (uint8_t *)&m_rtmsg;
       rtm.rtm_msglen = len;

       rv = rump_sys_write(s, &m_rtmsg, len);
       if (rv != (int)len) {
#ifdef RUMPNFSD_NOATF
               err(1, "write routing message");
#else
               atf_tc_fail_errno("write routing message");
#endif
       }
       rump_sys_close(s);
}

static bool __unused
netcfg_rump_pingtest(const char *dst, int ms_timo)
{
       struct timeval tv;
       struct sockaddr_in sin;
       struct icmp icmp;
       socklen_t slen;
       int s;
       bool rv = false;

       s = rump_sys_socket(PF_INET, SOCK_RAW, IPPROTO_ICMP);
       if (s == -1)
               return false;
       tv.tv_sec = ms_timo / 1000;
       tv.tv_usec = 1000 * (ms_timo % 1000);
       if (rump_sys_setsockopt(s, SOL_SOCKET, SO_RCVTIMEO,
           &tv, sizeof(tv)) == -1)
               goto out;

       memset(&sin, 0, sizeof(sin));
       sin.sin_len = sizeof(sin);
       sin.sin_family = AF_INET;
       sin.sin_addr.s_addr = inet_addr(dst);

       memset(&icmp, 0, sizeof(icmp));
       icmp.icmp_type = ICMP_ECHO;
       icmp.icmp_id = htons(37);
       icmp.icmp_cksum = htons(0xf7da); /* precalc */

       slen = sizeof(sin);
       if (rump_sys_sendto(s, &icmp, sizeof(icmp), 0,
           (struct sockaddr *)&sin, slen) == -1) {
               goto out;
       }

       if (rump_sys_recvfrom(s, &icmp, sizeof(icmp), 0,
           (struct sockaddr *)&sin, &slen) == -1)
               goto out;

       rv = true;
out:
       rump_sys_close(s);
       return rv;
}

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