NetIf-freebsd.cpp@ 92153

Last change on this file since 92153 was 82968, checked in by vboxsync, 5 years ago
Copyright year updates by scm.
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1	/* $Id: NetIf-freebsd.cpp 82968 2020-02-04 10:35:17Z vboxsync $ */
2	/** @file
3	* Main - NetIfList, FreeBSD implementation.
4	*/
5
6	/*
7	* Copyright (C) 2008-2020 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*/
17
18	/*
19	* Original (C) 2009 Fredrik Lindberg <fli@shapeshifter.se>. Contributed
20	* to VirtualBox under the MIT license by the author.
21	*/
22
23
24	/*********************************************************************************************************************************
25	* Header Files *
26	*********************************************************************************************************************************/
27	#define LOG_GROUP LOG_GROUP_MAIN_HOST
28	#include <sys/types.h>
29
30	#include <sys/sysctl.h>
31	#include <sys/socket.h>
32	#include <sys/sockio.h>
33	#include <net/if.h>
34	#include <net/if_types.h>
35	#include <net80211/ieee80211_ioctl.h>
36
37	#include <net/route.h>
38	/*
39	* route.h includes net/radix.h which for some reason defines Free as a wrapper
40	* around free. This collides with Free defined in xpcom/include/nsIMemory.h
41	* Undefine it and hope for the best
42	*/
43	#undef Free
44
45	#include <net/if_dl.h>
46	#include <netinet/in.h>
47
48	#include <stdlib.h>
49	#include <stdio.h>
50	#include <unistd.h>
51	#include <errno.h>
52
53	#include <list>
54
55	#include "HostNetworkInterfaceImpl.h"
56	#include "netif.h"
57	#include "LoggingNew.h"
58
59	#define ROUNDUP(a) \
60	((a) > 0 ? (1 + (((a) - 1) \| (sizeof(long) - 1))) : sizeof(long))
61	#define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len))
62
63	void extractAddresses(int iAddrMask, caddr_t cp, caddr_t cplim, struct sockaddr **pAddresses)
64	{
65	struct sockaddr *sa;
66
67	for (int i = 0; i < RTAX_MAX && cp < cplim; i++) {
68	if (!(iAddrMask & (1 << i)))
69	continue;
70
71	sa = (struct sockaddr *)cp;
72
73	pAddresses[i] = sa;
74
75	ADVANCE(cp, sa);
76	}
77	}
78
79	static int getDefaultIfaceIndex(unsigned short *pu16Index, int family)
80	{
81	size_t cbNeeded;
82	char pBuf, pNext;
83	int aiMib[6];
84	struct sockaddr *addresses[RTAX_MAX];
85	aiMib[0] = CTL_NET;
86	aiMib[1] = PF_ROUTE;
87	aiMib[2] = 0;
88	aiMib[3] = family; /* address family */
89	aiMib[4] = NET_RT_DUMP;
90	aiMib[5] = 0;
91
92	if (sysctl(aiMib, 6, NULL, &cbNeeded, NULL, 0) < 0)
93	{
94	Log(("getDefaultIfaceIndex: Failed to get estimate for list size (errno=%d).\n", errno));
95	return RTErrConvertFromErrno(errno);
96	}
97	if ((pBuf = (char*)malloc(cbNeeded)) == NULL)
98	return VERR_NO_MEMORY;
99	if (sysctl(aiMib, 6, pBuf, &cbNeeded, NULL, 0) < 0)
100	{
101	free(pBuf);
102	Log(("getDefaultIfaceIndex: Failed to retrieve interface table (errno=%d).\n", errno));
103	return RTErrConvertFromErrno(errno);
104	}
105
106	char *pEnd = pBuf + cbNeeded;
107	struct rt_msghdr *pRtMsg;
108	for (pNext = pBuf; pNext < pEnd; pNext += pRtMsg->rtm_msglen)
109	{
110	pRtMsg = (struct rt_msghdr *)pNext;
111
112	if (pRtMsg->rtm_type != RTM_GET)
113	{
114	Log(("getDefaultIfaceIndex: Got message %u while expecting %u.\n",
115	pRtMsg->rtm_type, RTM_GET));
116	//rc = VERR_INTERNAL_ERROR;
117	continue;
118	}
119	if ((char*)(pRtMsg + 1) < pEnd)
120	{
121	/* Extract addresses from the message. */
122	extractAddresses(pRtMsg->rtm_addrs, (char *)(pRtMsg + 1),
123	pRtMsg->rtm_msglen + (char *)pRtMsg, addresses);
124	if ((pRtMsg->rtm_addrs & RTA_DST))
125	{
126	if (addresses[RTAX_DST]->sa_family != AF_INET)
127	continue;
128	struct sockaddr_in addr = (struct sockaddr_in )addresses[RTAX_DST];
129	struct sockaddr_in mask = (struct sockaddr_in )addresses[RTAX_NETMASK];
130	if ((addr->sin_addr.s_addr == INADDR_ANY) &&
131	mask &&
132	(ntohl(mask->sin_addr.s_addr) == 0L \|\|
133	mask->sin_len == 0))
134	{
135	*pu16Index = pRtMsg->rtm_index;
136	free(pBuf);
137	return VINF_SUCCESS;
138	}
139	}
140	}
141	}
142	free(pBuf);
143	return VERR_INTERNAL_ERROR;
144
145	}
146
147	void extractAddressesToNetInfo(int iAddrMask, caddr_t cp, caddr_t cplim, PNETIFINFO pInfo)
148	{
149	struct sockaddr *addresses[RTAX_MAX];
150
151	extractAddresses(iAddrMask, cp, cplim, addresses);
152	switch (addresses[RTAX_IFA]->sa_family)
153	{
154	case AF_INET:
155	if (!pInfo->IPAddress.u)
156	{
157	pInfo->IPAddress.u = ((struct sockaddr_in *)addresses[RTAX_IFA])->sin_addr.s_addr;
158	pInfo->IPNetMask.u = ((struct sockaddr_in *)addresses[RTAX_NETMASK])->sin_addr.s_addr;
159	}
160	break;
161	case AF_INET6:
162	if (!pInfo->IPv6Address.s.Lo && !pInfo->IPv6Address.s.Hi)
163	{
164	memcpy(pInfo->IPv6Address.au8,
165	((struct sockaddr_in6 *)addresses[RTAX_IFA])->sin6_addr.__u6_addr.__u6_addr8,
166	sizeof(pInfo->IPv6Address));
167	memcpy(pInfo->IPv6NetMask.au8,
168	((struct sockaddr_in6 *)addresses[RTAX_NETMASK])->sin6_addr.__u6_addr.__u6_addr8,
169	sizeof(pInfo->IPv6NetMask));
170	}
171	break;
172	default:
173	Log(("NetIfList: Unsupported address family: %u\n", addresses[RTAX_IFA]->sa_family));
174	break;
175	}
176	}
177
178
179	static bool isWireless(const char *pszName)
180	{
181	bool fWireless = false;
182	int iSock = socket(AF_INET, SOCK_DGRAM, 0);
183	if (iSock >= 0)
184	{
185	struct ieee80211req WReq;
186	uint8_t abData[32];
187
188	RT_ZERO(WReq);
189	strncpy(WReq.i_name, pszName, sizeof(WReq.i_name));
190	WReq.i_type = IEEE80211_IOC_SSID;
191	WReq.i_val = -1;
192	WReq.i_data = abData;
193	WReq.i_len = sizeof(abData);
194
195	fWireless = ioctl(iSock, SIOCG80211, &WReq) >= 0;
196	close(iSock);
197	}
198
199	return fWireless;
200	}
201
202	int NetIfList(std::list <ComObjPtr<HostNetworkInterface> > &list)
203	{
204	int rc = VINF_SUCCESS;
205	size_t cbNeeded;
206	char pBuf, pNext;
207	int aiMib[6];
208	unsigned short u16DefaultIface = 0; /* shut up gcc. */
209	bool fDefaultIfaceExistent = true;
210
211	/* Get the index of the interface associated with default route. */
212	rc = getDefaultIfaceIndex(&u16DefaultIface, PF_INET);
213	if (RT_FAILURE(rc))
214	{
215	fDefaultIfaceExistent = false;
216	rc = VINF_SUCCESS;
217	}
218
219	aiMib[0] = CTL_NET;
220	aiMib[1] = PF_ROUTE;
221	aiMib[2] = 0;
222	aiMib[3] = 0; /* address family */
223	aiMib[4] = NET_RT_IFLIST;
224	aiMib[5] = 0;
225
226	if (sysctl(aiMib, 6, NULL, &cbNeeded, NULL, 0) < 0)
227	{
228	Log(("NetIfList: Failed to get estimate for list size (errno=%d).\n", errno));
229	return RTErrConvertFromErrno(errno);
230	}
231	if ((pBuf = (char*)malloc(cbNeeded)) == NULL)
232	return VERR_NO_MEMORY;
233	if (sysctl(aiMib, 6, pBuf, &cbNeeded, NULL, 0) < 0)
234	{
235	free(pBuf);
236	Log(("NetIfList: Failed to retrieve interface table (errno=%d).\n", errno));
237	return RTErrConvertFromErrno(errno);
238	}
239
240	int sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP);
241	if (sock < 0)
242	{
243	free(pBuf);
244	Log(("NetIfList: socket() -> %d\n", errno));
245	return RTErrConvertFromErrno(errno);
246	}
247
248	char *pEnd = pBuf + cbNeeded;
249	for (pNext = pBuf; pNext < pEnd;)
250	{
251	struct if_msghdr pIfMsg = (struct if_msghdr )pNext;
252
253	if (pIfMsg->ifm_type != RTM_IFINFO)
254	{
255	Log(("NetIfList: Got message %u while expecting %u.\n",
256	pIfMsg->ifm_type, RTM_IFINFO));
257	rc = VERR_INTERNAL_ERROR;
258	break;
259	}
260	struct sockaddr_dl pSdl = (struct sockaddr_dl )(pIfMsg + 1);
261
262	size_t cbNameLen = pSdl->sdl_nlen + 1;
263	PNETIFINFO pNew = (PNETIFINFO)RTMemAllocZ(RT_UOFFSETOF_DYN(NETIFINFO, szName[cbNameLen]));
264	if (!pNew)
265	{
266	rc = VERR_NO_MEMORY;
267	break;
268	}
269	memcpy(pNew->MACAddress.au8, LLADDR(pSdl), sizeof(pNew->MACAddress.au8));
270	pNew->enmMediumType = NETIF_T_ETHERNET;
271	Assert(sizeof(pNew->szShortName) >= cbNameLen);
272	strlcpy(pNew->szShortName, pSdl->sdl_data, cbNameLen);
273	strlcpy(pNew->szName, pSdl->sdl_data, cbNameLen);
274	/* Generate UUID from name and MAC address. */
275	RTUUID uuid;
276	RTUuidClear(&uuid);
277	memcpy(&uuid, pNew->szShortName, RT_MIN(cbNameLen, sizeof(uuid)));
278	uuid.Gen.u8ClockSeqHiAndReserved = (uuid.Gen.u8ClockSeqHiAndReserved & 0x3f) \| 0x80;
279	uuid.Gen.u16TimeHiAndVersion = (uuid.Gen.u16TimeHiAndVersion & 0x0fff) \| 0x4000;
280	memcpy(uuid.Gen.au8Node, pNew->MACAddress.au8, sizeof(uuid.Gen.au8Node));
281	pNew->Uuid = uuid;
282
283	pNext += pIfMsg->ifm_msglen;
284	while (pNext < pEnd)
285	{
286	struct ifa_msghdr pIfAddrMsg = (struct ifa_msghdr )pNext;
287
288	if (pIfAddrMsg->ifam_type != RTM_NEWADDR)
289	break;
290	extractAddressesToNetInfo(pIfAddrMsg->ifam_addrs,
291	(char *)(pIfAddrMsg + 1),
292	pIfAddrMsg->ifam_msglen + (char *)pIfAddrMsg,
293	pNew);
294	pNext += pIfAddrMsg->ifam_msglen;
295	}
296
297	if (pSdl->sdl_type == IFT_ETHER \|\| pSdl->sdl_type == IFT_L2VLAN)
298	{
299	struct ifreq IfReq;
300	RTStrCopy(IfReq.ifr_name, sizeof(IfReq.ifr_name), pNew->szShortName);
301	if (ioctl(sock, SIOCGIFFLAGS, &IfReq) < 0)
302	{
303	Log(("NetIfList: ioctl(SIOCGIFFLAGS) -> %d\n", errno));
304	pNew->enmStatus = NETIF_S_UNKNOWN;
305	}
306	else
307	pNew->enmStatus = (IfReq.ifr_flags & IFF_UP) ? NETIF_S_UP : NETIF_S_DOWN;
308
309	HostNetworkInterfaceType_T enmType;
310	if (strncmp(pNew->szName, RT_STR_TUPLE("vboxnet")))
311	enmType = HostNetworkInterfaceType_Bridged;
312	else
313	enmType = HostNetworkInterfaceType_HostOnly;
314
315	pNew->fWireless = isWireless(pNew->szName);
316
317	ComObjPtr<HostNetworkInterface> IfObj;
318	IfObj.createObject();
319	if (SUCCEEDED(IfObj->init(Bstr(pNew->szName), enmType, pNew)))
320	{
321	/* Make sure the default interface gets to the beginning. */
322	if ( fDefaultIfaceExistent
323	&& pIfMsg->ifm_index == u16DefaultIface)
324	list.push_front(IfObj);
325	else
326	list.push_back(IfObj);
327	}
328	}
329	RTMemFree(pNew);
330	}
331
332	close(sock);
333	free(pBuf);
334	return rc;
335
336
337	}
338
339	int NetIfGetConfigByName(PNETIFINFO pInfo)
340	{
341	int rc = VINF_SUCCESS;
342	size_t cbNeeded;
343	char pBuf, pNext;
344	int aiMib[6];
345
346	aiMib[0] = CTL_NET;
347	aiMib[1] = PF_ROUTE;
348	aiMib[2] = 0;
349	aiMib[3] = 0; /* address family */
350	aiMib[4] = NET_RT_IFLIST;
351	aiMib[5] = 0;
352
353	if (sysctl(aiMib, 6, NULL, &cbNeeded, NULL, 0) < 0)
354	{
355	Log(("NetIfList: Failed to get estimate for list size (errno=%d).\n", errno));
356	return RTErrConvertFromErrno(errno);
357	}
358	if ((pBuf = (char*)malloc(cbNeeded)) == NULL)
359	return VERR_NO_MEMORY;
360	if (sysctl(aiMib, 6, pBuf, &cbNeeded, NULL, 0) < 0)
361	{
362	free(pBuf);
363	Log(("NetIfList: Failed to retrieve interface table (errno=%d).\n", errno));
364	return RTErrConvertFromErrno(errno);
365	}
366
367	int sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP);
368	if (sock < 0)
369	{
370	free(pBuf);
371	Log(("NetIfList: socket() -> %d\n", errno));
372	return RTErrConvertFromErrno(errno);
373	}
374
375	char *pEnd = pBuf + cbNeeded;
376	for (pNext = pBuf; pNext < pEnd;)
377	{
378	struct if_msghdr pIfMsg = (struct if_msghdr )pNext;
379
380	if (pIfMsg->ifm_type != RTM_IFINFO)
381	{
382	Log(("NetIfList: Got message %u while expecting %u.\n",
383	pIfMsg->ifm_type, RTM_IFINFO));
384	rc = VERR_INTERNAL_ERROR;
385	break;
386	}
387	struct sockaddr_dl pSdl = (struct sockaddr_dl )(pIfMsg + 1);
388
389	bool fSkip = !!strcmp(pInfo->szShortName, pSdl->sdl_data);
390
391	pNext += pIfMsg->ifm_msglen;
392	while (pNext < pEnd)
393	{
394	struct ifa_msghdr pIfAddrMsg = (struct ifa_msghdr )pNext;
395
396	if (pIfAddrMsg->ifam_type != RTM_NEWADDR)
397	break;
398	if (!fSkip)
399	extractAddressesToNetInfo(pIfAddrMsg->ifam_addrs,
400	(char *)(pIfAddrMsg + 1),
401	pIfAddrMsg->ifam_msglen + (char *)pIfAddrMsg,
402	pInfo);
403	pNext += pIfAddrMsg->ifam_msglen;
404	}
405
406	if (!fSkip && (pSdl->sdl_type == IFT_ETHER \|\| pSdl->sdl_type == IFT_L2VLAN))
407	{
408	size_t cbNameLen = pSdl->sdl_nlen + 1;
409	memcpy(pInfo->MACAddress.au8, LLADDR(pSdl), sizeof(pInfo->MACAddress.au8));
410	pInfo->enmMediumType = NETIF_T_ETHERNET;
411	/* Generate UUID from name and MAC address. */
412	RTUUID uuid;
413	RTUuidClear(&uuid);
414	memcpy(&uuid, pInfo->szShortName, RT_MIN(cbNameLen, sizeof(uuid)));
415	uuid.Gen.u8ClockSeqHiAndReserved = (uuid.Gen.u8ClockSeqHiAndReserved & 0x3f) \| 0x80;
416	uuid.Gen.u16TimeHiAndVersion = (uuid.Gen.u16TimeHiAndVersion & 0x0fff) \| 0x4000;
417	memcpy(uuid.Gen.au8Node, pInfo->MACAddress.au8, sizeof(uuid.Gen.au8Node));
418	pInfo->Uuid = uuid;
419
420	struct ifreq IfReq;
421	RTStrCopy(IfReq.ifr_name, sizeof(IfReq.ifr_name), pInfo->szShortName);
422	if (ioctl(sock, SIOCGIFFLAGS, &IfReq) < 0)
423	{
424	Log(("NetIfList: ioctl(SIOCGIFFLAGS) -> %d\n", errno));
425	pInfo->enmStatus = NETIF_S_UNKNOWN;
426	}
427	else
428	pInfo->enmStatus = (IfReq.ifr_flags & IFF_UP) ? NETIF_S_UP : NETIF_S_DOWN;
429
430	return VINF_SUCCESS;
431	}
432	}
433	close(sock);
434	free(pBuf);
435	return rc;
436	}
437
438	/**
439	* Retrieve the physical link speed in megabits per second. If the interface is
440	* not up or otherwise unavailable the zero speed is returned.
441	*
442	* @returns VBox status code.
443	*
444	* @param pcszIfName Interface name.
445	* @param puMbits Where to store the link speed.
446	*/
447	int NetIfGetLinkSpeed(const char * /pcszIfName/, uint32_t * /puMbits/)
448	{
449	return VERR_NOT_IMPLEMENTED;
450	}

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source: vbox/trunk/src/VBox/Main/src-server/freebsd/NetIf-freebsd.cpp@ 92153

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