NetIf-freebsd.cpp revision a3e5b1cf4ab5395f45b7ed855c72f70e4bcf4219
/* $Id$ */
/** @file
* Main - NetIfList, FreeBSD implementation.
*/
/*
* Copyright (C) 2008 Sun Microsystems, Inc.
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
* Clara, CA 95054 USA or visit http://www.sun.com if you need
* additional information or have any questions.
*/
/*
* Original (C) 2009 Fredrik Lindberg <fli@shapeshifter.se>. Contributed
* to VirtualBox under the MIT license by the author.
*/
/*******************************************************************************
* Header Files *
*******************************************************************************/
#define LOG_GROUP LOG_GROUP_MAIN
#include <sys/types.h>
#include <sys/sysctl.h>
#include <sys/socket.h>
#include <sys/sockio.h>
#include <net/if.h>
#include <net/if_types.h>
#include <net/route.h>
/*
* route.h includes net/radix.h which for some reason defines Free as a wrapper
* around free. This collides with Free defined in xpcom/include/nsIMemory.h
* Undefine it and hope for the best
*/
#undef Free
#include <net/if_dl.h>
#include <netinet/in.h>
#include <stdio.h>
#include <unistd.h>
#include <errno.h>
#include <list>
#include "HostNetworkInterfaceImpl.h"
#include "netif.h"
#include "Logging.h"
#define ROUNDUP(a) \
((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long))
#define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len))
void extractAddresses(int iAddrMask, caddr_t cp, caddr_t cplim, struct sockaddr **pAddresses)
{
struct sockaddr *sa;
for (int i = 0; i < RTAX_MAX && cp < cplim; i++) {
if (!(iAddrMask & (1 << i)))
continue;
sa = (struct sockaddr *)cp;
pAddresses[i] = sa;
ADVANCE(cp, sa);
}
}
static int getDefaultIfaceIndex(unsigned short *pu16Index, int family)
{
size_t cbNeeded;
char *pBuf, *pNext;
int aiMib[6];
struct sockaddr *addresses[RTAX_MAX];
aiMib[0] = CTL_NET;
aiMib[1] = PF_ROUTE;
aiMib[2] = 0;
aiMib[3] = family; /* address family */
aiMib[4] = NET_RT_DUMP;
aiMib[5] = 0;
if (sysctl(aiMib, 6, NULL, &cbNeeded, NULL, 0) < 0)
{
Log(("getDefaultIfaceIndex: Failed to get estimate for list size (errno=%d).\n", errno));
return RTErrConvertFromErrno(errno);
}
if ((pBuf = (char*)malloc(cbNeeded)) == NULL)
return VERR_NO_MEMORY;
if (sysctl(aiMib, 6, pBuf, &cbNeeded, NULL, 0) < 0)
{
free(pBuf);
Log(("getDefaultIfaceIndex: Failed to retrieve interface table (errno=%d).\n", errno));
return RTErrConvertFromErrno(errno);
}
char *pEnd = pBuf + cbNeeded;
struct rt_msghdr *pRtMsg;
for (pNext = pBuf; pNext < pEnd; pNext += pRtMsg->rtm_msglen)
{
pRtMsg = (struct rt_msghdr *)pNext;
if (pRtMsg->rtm_type != RTM_GET)
{
Log(("getDefaultIfaceIndex: Got message %u while expecting %u.\n",
pRtMsg->rtm_type, RTM_GET));
//rc = VERR_INTERNAL_ERROR;
continue;
}
if ((char*)(pRtMsg + 1) < pEnd)
{
/* Extract addresses from the message. */
extractAddresses(pRtMsg->rtm_addrs, (char *)(pRtMsg + 1),
pRtMsg->rtm_msglen + (char *)pRtMsg, addresses);
if ((pRtMsg->rtm_addrs & RTA_DST))
{
if (addresses[RTAX_DST]->sa_family != AF_INET)
continue;
struct sockaddr_in *addr = (struct sockaddr_in *)addresses[RTAX_DST];
struct sockaddr_in *mask = (struct sockaddr_in *)addresses[RTAX_NETMASK];
if ((addr->sin_addr.s_addr == INADDR_ANY) &&
mask &&
(ntohl(mask->sin_addr.s_addr) == 0L ||
mask->sin_len == 0))
{
*pu16Index = pRtMsg->rtm_index;
free(pBuf);
return VINF_SUCCESS;
}
}
}
}
free(pBuf);
return VERR_INTERNAL_ERROR;
}
void extractAddressesToNetInfo(int iAddrMask, caddr_t cp, caddr_t cplim, PNETIFINFO pInfo)
{
struct sockaddr *addresses[RTAX_MAX];
extractAddresses(iAddrMask, cp, cplim, addresses);
switch (addresses[RTAX_IFA]->sa_family)
{
case AF_INET:
if (!pInfo->IPAddress.u)
{
pInfo->IPAddress.u = ((struct sockaddr_in *)addresses[RTAX_IFA])->sin_addr.s_addr;
pInfo->IPNetMask.u = ((struct sockaddr_in *)addresses[RTAX_NETMASK])->sin_addr.s_addr;
}
break;
case AF_INET6:
if (!pInfo->IPv6Address.s.Lo && !pInfo->IPv6Address.s.Hi)
{
memcpy(pInfo->IPv6Address.au8,
((struct sockaddr_in6 *)addresses[RTAX_IFA])->sin6_addr.__u6_addr.__u6_addr8,
sizeof(pInfo->IPv6Address));
memcpy(pInfo->IPv6NetMask.au8,
((struct sockaddr_in6 *)addresses[RTAX_NETMASK])->sin6_addr.__u6_addr.__u6_addr8,
sizeof(pInfo->IPv6NetMask));
}
break;
default:
Log(("NetIfList: Unsupported address family: %u\n", addresses[RTAX_IFA]->sa_family));
break;
}
}
int NetIfList(std::list <ComObjPtr<HostNetworkInterface> > &list)
{
int rc = VINF_SUCCESS;
size_t cbNeeded;
char *pBuf, *pNext;
int aiMib[6];
unsigned short u16DefaultIface;
/* Get the index of the interface associated with default route. */
rc = getDefaultIfaceIndex(&u16DefaultIface, PF_INET);
if (RT_FAILURE(rc))
return rc;
aiMib[0] = CTL_NET;
aiMib[1] = PF_ROUTE;
aiMib[2] = 0;
aiMib[3] = 0; /* address family */
aiMib[4] = NET_RT_IFLIST;
aiMib[5] = 0;
if (sysctl(aiMib, 6, NULL, &cbNeeded, NULL, 0) < 0)
{
Log(("NetIfList: Failed to get estimate for list size (errno=%d).\n", errno));
return RTErrConvertFromErrno(errno);
}
if ((pBuf = (char*)malloc(cbNeeded)) == NULL)
return VERR_NO_MEMORY;
if (sysctl(aiMib, 6, pBuf, &cbNeeded, NULL, 0) < 0)
{
free(pBuf);
Log(("NetIfList: Failed to retrieve interface table (errno=%d).\n", errno));
return RTErrConvertFromErrno(errno);
}
int sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP);
if (sock < 0)
{
free(pBuf);
Log(("NetIfList: socket() -> %d\n", errno));
return RTErrConvertFromErrno(errno);
}
char *pEnd = pBuf + cbNeeded;
for (pNext = pBuf; pNext < pEnd;)
{
struct if_msghdr *pIfMsg = (struct if_msghdr *)pNext;
if (pIfMsg->ifm_type != RTM_IFINFO)
{
Log(("NetIfList: Got message %u while expecting %u.\n",
pIfMsg->ifm_type, RTM_IFINFO));
rc = VERR_INTERNAL_ERROR;
break;
}
struct sockaddr_dl *pSdl = (struct sockaddr_dl *)(pIfMsg + 1);
size_t cbNameLen = pSdl->sdl_nlen + 1;
PNETIFINFO pNew = (PNETIFINFO)RTMemAllocZ(RT_OFFSETOF(NETIFINFO, szName[cbNameLen]));
if (!pNew)
{
rc = VERR_NO_MEMORY;
break;
}
memcpy(pNew->MACAddress.au8, LLADDR(pSdl), sizeof(pNew->MACAddress.au8));
pNew->enmMediumType = NETIF_T_ETHERNET;
Assert(sizeof(pNew->szShortName) >= cbNameLen);
strlcpy(pNew->szShortName, pSdl->sdl_data, cbNameLen);
strlcpy(pNew->szName, pSdl->sdl_data, cbNameLen);
/* Generate UUID from name and MAC address. */
RTUUID uuid;
RTUuidClear(&uuid);
memcpy(&uuid, pNew->szShortName, RT_MIN(cbNameLen, sizeof(uuid)));
uuid.Gen.u8ClockSeqHiAndReserved = (uuid.Gen.u8ClockSeqHiAndReserved & 0x3f) | 0x80;
uuid.Gen.u16TimeHiAndVersion = (uuid.Gen.u16TimeHiAndVersion & 0x0fff) | 0x4000;
memcpy(uuid.Gen.au8Node, pNew->MACAddress.au8, sizeof(uuid.Gen.au8Node));
pNew->Uuid = uuid;
pNext += pIfMsg->ifm_msglen;
while (pNext < pEnd)
{
struct ifa_msghdr *pIfAddrMsg = (struct ifa_msghdr *)pNext;
if (pIfAddrMsg->ifam_type != RTM_NEWADDR)
break;
extractAddressesToNetInfo(pIfAddrMsg->ifam_addrs,
(char *)(pIfAddrMsg + 1),
pIfAddrMsg->ifam_msglen + (char *)pIfAddrMsg,
pNew);
pNext += pIfAddrMsg->ifam_msglen;
}
if (pSdl->sdl_type == IFT_ETHER)
{
struct ifreq IfReq;
strcpy(IfReq.ifr_name, pNew->szShortName);
if (ioctl(sock, SIOCGIFFLAGS, &IfReq) < 0)
{
Log(("NetIfList: ioctl(SIOCGIFFLAGS) -> %d\n", errno));
pNew->enmStatus = NETIF_S_UNKNOWN;
}
else
pNew->enmStatus = (IfReq.ifr_flags & IFF_UP) ? NETIF_S_UP : NETIF_S_DOWN;
HostNetworkInterfaceType_T enmType;
if (strncmp("vboxnet", pNew->szName, 7))
enmType = HostNetworkInterfaceType_Bridged;
else
enmType = HostNetworkInterfaceType_HostOnly;
ComObjPtr<HostNetworkInterface> IfObj;
IfObj.createObject();
if (SUCCEEDED(IfObj->init(Bstr(pNew->szName), enmType, pNew)))
/* Make sure the default interface gets to the beginning. */
if (pIfMsg->ifm_index == u16DefaultIface)
list.push_front(IfObj);
else
list.push_back(IfObj);
}
RTMemFree(pNew);
}
close(sock);
free(pBuf);
return rc;
}
int NetIfGetConfigByName(PNETIFINFO pInfo)
{
int rc = VINF_SUCCESS;
size_t cbNeeded;
char *pBuf, *pNext;
int aiMib[6];
aiMib[0] = CTL_NET;
aiMib[1] = PF_ROUTE;
aiMib[2] = 0;
aiMib[3] = 0; /* address family */
aiMib[4] = NET_RT_IFLIST;
aiMib[5] = 0;
if (sysctl(aiMib, 6, NULL, &cbNeeded, NULL, 0) < 0)
{
Log(("NetIfList: Failed to get estimate for list size (errno=%d).\n", errno));
return RTErrConvertFromErrno(errno);
}
if ((pBuf = (char*)malloc(cbNeeded)) == NULL)
return VERR_NO_MEMORY;
if (sysctl(aiMib, 6, pBuf, &cbNeeded, NULL, 0) < 0)
{
free(pBuf);
Log(("NetIfList: Failed to retrieve interface table (errno=%d).\n", errno));
return RTErrConvertFromErrno(errno);
}
int sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP);
if (sock < 0)
{
free(pBuf);
Log(("NetIfList: socket() -> %d\n", errno));
return RTErrConvertFromErrno(errno);
}
char *pEnd = pBuf + cbNeeded;
for (pNext = pBuf; pNext < pEnd;)
{
struct if_msghdr *pIfMsg = (struct if_msghdr *)pNext;
if (pIfMsg->ifm_type != RTM_IFINFO)
{
Log(("NetIfList: Got message %u while expecting %u.\n",
pIfMsg->ifm_type, RTM_IFINFO));
rc = VERR_INTERNAL_ERROR;
break;
}
struct sockaddr_dl *pSdl = (struct sockaddr_dl *)(pIfMsg + 1);
bool fSkip = !!strcmp(pInfo->szShortName, pSdl->sdl_data);
pNext += pIfMsg->ifm_msglen;
while (pNext < pEnd)
{
struct ifa_msghdr *pIfAddrMsg = (struct ifa_msghdr *)pNext;
if (pIfAddrMsg->ifam_type != RTM_NEWADDR)
break;
if (!fSkip)
extractAddressesToNetInfo(pIfAddrMsg->ifam_addrs,
(char *)(pIfAddrMsg + 1),
pIfAddrMsg->ifam_msglen + (char *)pIfAddrMsg,
pInfo);
pNext += pIfAddrMsg->ifam_msglen;
}
if (!fSkip && pSdl->sdl_type == IFT_ETHER)
{
size_t cbNameLen = pSdl->sdl_nlen + 1;
memcpy(pInfo->MACAddress.au8, LLADDR(pSdl), sizeof(pInfo->MACAddress.au8));
pInfo->enmMediumType = NETIF_T_ETHERNET;
/* Generate UUID from name and MAC address. */
RTUUID uuid;
RTUuidClear(&uuid);
memcpy(&uuid, pInfo->szShortName, RT_MIN(cbNameLen, sizeof(uuid)));
uuid.Gen.u8ClockSeqHiAndReserved = (uuid.Gen.u8ClockSeqHiAndReserved & 0x3f) | 0x80;
uuid.Gen.u16TimeHiAndVersion = (uuid.Gen.u16TimeHiAndVersion & 0x0fff) | 0x4000;
memcpy(uuid.Gen.au8Node, pInfo->MACAddress.au8, sizeof(uuid.Gen.au8Node));
pInfo->Uuid = uuid;
struct ifreq IfReq;
strcpy(IfReq.ifr_name, pInfo->szShortName);
if (ioctl(sock, SIOCGIFFLAGS, &IfReq) < 0)
{
Log(("NetIfList: ioctl(SIOCGIFFLAGS) -> %d\n", errno));
pInfo->enmStatus = NETIF_S_UNKNOWN;
}
else
pInfo->enmStatus = (IfReq.ifr_flags & IFF_UP) ? NETIF_S_UP : NETIF_S_DOWN;
return VINF_SUCCESS;
}
}
close(sock);
free(pBuf);
return rc;
}