NetIf-darwin.cpp@ 36986

Last change on this file since 36986 was 35693, checked in by vboxsync, 14 years ago
Main/NetIf: Third attempt to fix VBoxSVC crash when listing host interfaces with no default route (#5491)
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1	/* $Id: NetIf-darwin.cpp 35693 2011-01-24 17:27:05Z vboxsync $ */
2	/** @file
3	* Main - NetIfList, Darwin implementation.
4	*/
5
6	/*
7	* Copyright (C) 2008 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
20	/*******************************************************************************
21	* Header Files *
22	*******************************************************************************/
23	/*
24	* Deal with conflicts first.
25	* PVM - BSD mess, that FreeBSD has correct a long time ago.
26	* iprt/types.h before sys/param.h - prevents UINT32_C and friends.
27	*/
28	#include <iprt/types.h>
29	#include <sys/param.h>
30	#undef PVM
31
32	#define LOG_GROUP LOG_GROUP_MAIN
33
34	#include <iprt/err.h>
35	#include <iprt/alloc.h>
36
37	#include <string.h>
38	#include <sys/socket.h>
39	#include <sys/ioctl.h>
40	#include <sys/sysctl.h>
41	#include <netinet/in.h>
42	#include <net/if.h>
43	#include <net/if_dl.h>
44	#include <net/if_types.h>
45	#include <net/route.h>
46	#include <ifaddrs.h>
47	#include <errno.h>
48	#include <unistd.h>
49	#include <list>
50
51	#include "HostNetworkInterfaceImpl.h"
52	#include "netif.h"
53	#include "iokit.h"
54	#include "Logging.h"
55
56	#if 0
57	int NetIfList(std::list <ComObjPtr<HostNetworkInterface> > &list)
58	{
59	int sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP);
60	if (sock < 0)
61	{
62	Log(("NetIfList: socket() -> %d\n", errno));
63	return NULL;
64	}
65	struct ifaddrs IfAddrs, pAddr;
66	int rc = getifaddrs(&IfAddrs);
67	if (rc)
68	{
69	close(sock);
70	Log(("NetIfList: getifaddrs() -> %d\n", rc));
71	return VERR_INTERNAL_ERROR;
72	}
73
74	PDARWINETHERNIC pEtherNICs = DarwinGetEthernetControllers();
75	while (pEtherNICs)
76	{
77	size_t cbNameLen = strlen(pEtherNICs->szName) + 1;
78	PNETIFINFO pNew = (PNETIFINFO)RTMemAllocZ(RT_OFFSETOF(NETIFINFO, szName[cbNameLen]));
79	pNew->MACAddress = pEtherNICs->Mac;
80	pNew->enmMediumType = NETIF_T_ETHERNET;
81	pNew->Uuid = pEtherNICs->Uuid;
82	Assert(sizeof(pNew->szShortName) > sizeof(pEtherNICs->szBSDName));
83	memcpy(pNew->szShortName, pEtherNICs->szBSDName, sizeof(pEtherNICs->szBSDName));
84	pNew->szShortName[sizeof(pEtherNICs->szBSDName)] = '\0';
85	memcpy(pNew->szName, pEtherNICs->szName, cbNameLen);
86
87	struct ifreq IfReq;
88	strcpy(IfReq.ifr_name, pNew->szShortName);
89	if (ioctl(sock, SIOCGIFFLAGS, &IfReq) < 0)
90	{
91	Log(("NetIfList: ioctl(SIOCGIFFLAGS) -> %d\n", errno));
92	pNew->enmStatus = NETIF_S_UNKNOWN;
93	}
94	else
95	pNew->enmStatus = (IfReq.ifr_flags & IFF_UP) ? NETIF_S_UP : NETIF_S_DOWN;
96
97	for (pAddr = IfAddrs; pAddr != NULL; pAddr = pAddr->ifa_next)
98	{
99	if (strcmp(pNew->szShortName, pAddr->ifa_name))
100	continue;
101
102	struct sockaddr_in pIPAddr, pIPNetMask;
103	struct sockaddr_in6 pIPv6Addr, pIPv6NetMask;
104
105	switch (pAddr->ifa_addr->sa_family)
106	{
107	case AF_INET:
108	if (pNew->IPAddress.u)
109	break;
110	pIPAddr = (struct sockaddr_in *)pAddr->ifa_addr;
111	Assert(sizeof(pNew->IPAddress) == sizeof(pIPAddr->sin_addr));
112	pNew->IPAddress.u = pIPAddr->sin_addr.s_addr;
113	pIPNetMask = (struct sockaddr_in *)pAddr->ifa_netmask;
114	Assert(pIPNetMask->sin_family == AF_INET);
115	Assert(sizeof(pNew->IPNetMask) == sizeof(pIPNetMask->sin_addr));
116	pNew->IPNetMask.u = pIPNetMask->sin_addr.s_addr;
117	break;
118	case AF_INET6:
119	if (pNew->IPv6Address.s.Lo \|\| pNew->IPv6Address.s.Hi)
120	break;
121	pIPv6Addr = (struct sockaddr_in6 *)pAddr->ifa_addr;
122	Assert(sizeof(pNew->IPv6Address) == sizeof(pIPv6Addr->sin6_addr));
123	memcpy(pNew->IPv6Address.au8,
124	pIPv6Addr->sin6_addr.__u6_addr.__u6_addr8,
125	sizeof(pNew->IPv6Address));
126	pIPv6NetMask = (struct sockaddr_in6 *)pAddr->ifa_netmask;
127	Assert(pIPv6NetMask->sin6_family == AF_INET6);
128	Assert(sizeof(pNew->IPv6NetMask) == sizeof(pIPv6NetMask->sin6_addr));
129	memcpy(pNew->IPv6NetMask.au8,
130	pIPv6NetMask->sin6_addr.__u6_addr.__u6_addr8,
131	sizeof(pNew->IPv6NetMask));
132	break;
133	}
134	}
135
136	ComObjPtr<HostNetworkInterface> IfObj;
137	IfObj.createObject();
138	if (SUCCEEDED(IfObj->init(Bstr(pEtherNICs->szName), HostNetworkInterfaceType_Bridged, pNew)))
139	list.push_back(IfObj);
140	RTMemFree(pNew);
141
142	/* next, free current */
143	void *pvFree = pEtherNICs;
144	pEtherNICs = pEtherNICs->pNext;
145	RTMemFree(pvFree);
146	}
147
148	freeifaddrs(IfAddrs);
149	close(sock);
150	return VINF_SUCCESS;
151	}
152	#else
153
154	#define ROUNDUP(a) \
155	(((a) & (sizeof(u_long) - 1)) ? (1 + ((a) \| (sizeof(u_long) - 1))) : (a))
156	#define ADVANCE(x, n) (x += (n)->sa_len ? ROUNDUP((n)->sa_len) : sizeof(u_long))
157
158	void extractAddresses(int iAddrMask, caddr_t cp, caddr_t cplim, struct sockaddr **pAddresses)
159	{
160	struct sockaddr *sa;
161
162	for (int i = 0; i < RTAX_MAX && cp < cplim; i++) {
163	if (iAddrMask & (1 << i))
164	{
165	sa = (struct sockaddr *)cp;
166
167	pAddresses[i] = sa;
168
169	ADVANCE(cp, sa);
170	}
171	else
172	pAddresses[i] = NULL;
173	}
174	}
175
176	void extractAddressesToNetInfo(int iAddrMask, caddr_t cp, caddr_t cplim, PNETIFINFO pInfo)
177	{
178	struct sockaddr *addresses[RTAX_MAX];
179
180	extractAddresses(iAddrMask, cp, cplim, addresses);
181	switch (addresses[RTAX_IFA]->sa_family)
182	{
183	case AF_INET:
184	if (!pInfo->IPAddress.u)
185	{
186	pInfo->IPAddress.u = ((struct sockaddr_in *)addresses[RTAX_IFA])->sin_addr.s_addr;
187	pInfo->IPNetMask.u = ((struct sockaddr_in *)addresses[RTAX_NETMASK])->sin_addr.s_addr;
188	}
189	break;
190	case AF_INET6:
191	if (!pInfo->IPv6Address.s.Lo && !pInfo->IPv6Address.s.Hi)
192	{
193	memcpy(pInfo->IPv6Address.au8,
194	((struct sockaddr_in6 *)addresses[RTAX_IFA])->sin6_addr.__u6_addr.__u6_addr8,
195	sizeof(pInfo->IPv6Address));
196	memcpy(pInfo->IPv6NetMask.au8,
197	((struct sockaddr_in6 *)addresses[RTAX_NETMASK])->sin6_addr.__u6_addr.__u6_addr8,
198	sizeof(pInfo->IPv6NetMask));
199	}
200	break;
201	default:
202	Log(("NetIfList: Unsupported address family: %u\n", addresses[RTAX_IFA]->sa_family));
203	break;
204	}
205	}
206
207	static int getDefaultIfaceIndex(unsigned short *pu16Index)
208	{
209	size_t cbNeeded;
210	char pBuf, pNext;
211	int aiMib[6];
212	struct sockaddr *addresses[RTAX_MAX];
213
214	aiMib[0] = CTL_NET;
215	aiMib[1] = PF_ROUTE;
216	aiMib[2] = 0;
217	aiMib[3] = PF_INET; /* address family */
218	aiMib[4] = NET_RT_DUMP;
219	aiMib[5] = 0;
220
221	if (sysctl(aiMib, 6, NULL, &cbNeeded, NULL, 0) < 0)
222	{
223	Log(("getDefaultIfaceIndex: Failed to get estimate for list size (errno=%d).\n", errno));
224	return RTErrConvertFromErrno(errno);
225	}
226	if ((pBuf = (char*)malloc(cbNeeded)) == NULL)
227	return VERR_NO_MEMORY;
228	if (sysctl(aiMib, 6, pBuf, &cbNeeded, NULL, 0) < 0)
229	{
230	free(pBuf);
231	Log(("getDefaultIfaceIndex: Failed to retrieve interface table (errno=%d).\n", errno));
232	return RTErrConvertFromErrno(errno);
233	}
234
235	char *pEnd = pBuf + cbNeeded;
236	struct rt_msghdr *pRtMsg;
237	for (pNext = pBuf; pNext < pEnd; pNext += pRtMsg->rtm_msglen)
238	{
239	pRtMsg = (struct rt_msghdr *)pNext;
240
241	if (pRtMsg->rtm_type != RTM_GET)
242	{
243	Log(("getDefaultIfaceIndex: Got message %u while expecting %u.\n",
244	pRtMsg->rtm_type, RTM_GET));
245	//rc = VERR_INTERNAL_ERROR;
246	continue;
247	}
248	if ((char*)(pRtMsg + 1) < pEnd)
249	{
250	/* Extract addresses from the message. */
251	extractAddresses(pRtMsg->rtm_addrs, (char *)(pRtMsg + 1),
252	pRtMsg->rtm_msglen + 1 + (char *)pRtMsg, addresses);
253	if ((pRtMsg->rtm_addrs & RTA_DST)
254	&& (pRtMsg->rtm_addrs & RTA_NETMASK))
255	{
256	if (addresses[RTAX_DST]->sa_family != AF_INET)
257	continue;
258	struct sockaddr_in addr = (struct sockaddr_in )addresses[RTAX_DST];
259	struct sockaddr_in mask = (struct sockaddr_in )addresses[RTAX_NETMASK];
260	if ((addr->sin_addr.s_addr == INADDR_ANY) &&
261	mask &&
262	(ntohl(mask->sin_addr.s_addr) == 0L \|\|
263	mask->sin_len == 0))
264	{
265	*pu16Index = pRtMsg->rtm_index;
266	free(pBuf);
267	return VINF_SUCCESS;
268	}
269	}
270	}
271	}
272	free(pBuf);
273	return 0; /* Failed to find default interface, take the first one in the list. */
274	}
275
276	int NetIfList(std::list <ComObjPtr<HostNetworkInterface> > &list)
277	{
278	int rc = VINF_SUCCESS;
279	size_t cbNeeded;
280	char pBuf, pNext;
281	int aiMib[6];
282	unsigned short u16DefaultIface = 0; /* initialized to shut up gcc */
283
284	/* Get the index of the interface associated with default route. */
285	rc = getDefaultIfaceIndex(&u16DefaultIface);
286	if (RT_FAILURE(rc))
287	return rc;
288
289	aiMib[0] = CTL_NET;
290	aiMib[1] = PF_ROUTE;
291	aiMib[2] = 0;
292	aiMib[3] = 0; /* address family */
293	aiMib[4] = NET_RT_IFLIST;
294	aiMib[5] = 0;
295
296	if (sysctl(aiMib, 6, NULL, &cbNeeded, NULL, 0) < 0)
297	{
298	Log(("NetIfList: Failed to get estimate for list size (errno=%d).\n", errno));
299	return RTErrConvertFromErrno(errno);
300	}
301	if ((pBuf = (char*)malloc(cbNeeded)) == NULL)
302	return VERR_NO_MEMORY;
303	if (sysctl(aiMib, 6, pBuf, &cbNeeded, NULL, 0) < 0)
304	{
305	free(pBuf);
306	Log(("NetIfList: Failed to retrieve interface table (errno=%d).\n", errno));
307	return RTErrConvertFromErrno(errno);
308	}
309
310	int sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP);
311	if (sock < 0)
312	{
313	free(pBuf);
314	Log(("NetIfList: socket() -> %d\n", errno));
315	return RTErrConvertFromErrno(errno);
316	}
317
318	PDARWINETHERNIC pNIC;
319	PDARWINETHERNIC pEtherNICs = DarwinGetEthernetControllers();
320
321	char *pEnd = pBuf + cbNeeded;
322	for (pNext = pBuf; pNext < pEnd;)
323	{
324	struct if_msghdr pIfMsg = (struct if_msghdr )pNext;
325
326	if (pIfMsg->ifm_type != RTM_IFINFO)
327	{
328	Log(("NetIfList: Got message %u while expecting %u.\n",
329	pIfMsg->ifm_type, RTM_IFINFO));
330	rc = VERR_INTERNAL_ERROR;
331	break;
332	}
333	struct sockaddr_dl pSdl = (struct sockaddr_dl )(pIfMsg + 1);
334
335	size_t cbNameLen = pSdl->sdl_nlen + 1;
336	Assert(pSdl->sdl_nlen < sizeof(pNIC->szBSDName));
337	for (pNIC = pEtherNICs; pNIC; pNIC = pNIC->pNext)
338	if ( !strncmp(pSdl->sdl_data, pNIC->szBSDName, pSdl->sdl_nlen)
339	&& pNIC->szBSDName[pSdl->sdl_nlen] == '\0')
340	{
341	cbNameLen = strlen(pNIC->szName) + 1;
342	break;
343	}
344	PNETIFINFO pNew = (PNETIFINFO)RTMemAllocZ(RT_OFFSETOF(NETIFINFO, szName[cbNameLen]));
345	if (!pNew)
346	{
347	rc = VERR_NO_MEMORY;
348	break;
349	}
350	memcpy(pNew->MACAddress.au8, LLADDR(pSdl), sizeof(pNew->MACAddress.au8));
351	pNew->enmMediumType = NETIF_T_ETHERNET;
352	Assert(sizeof(pNew->szShortName) > pSdl->sdl_nlen);
353	memcpy(pNew->szShortName, pSdl->sdl_data, RT_MIN(pSdl->sdl_nlen, sizeof(pNew->szShortName) - 1));
354
355	/*
356	* If we found the adapter in the list returned by
357	* DarwinGetEthernetControllers() copy the name and UUID from there.
358	*/
359	if (pNIC)
360	{
361	memcpy(pNew->szName, pNIC->szName, cbNameLen);
362	pNew->Uuid = pNIC->Uuid;
363	}
364	else
365	{
366	memcpy(pNew->szName, pSdl->sdl_data, pSdl->sdl_nlen);
367	/* Generate UUID from name and MAC address. */
368	RTUUID uuid;
369	RTUuidClear(&uuid);
370	memcpy(&uuid, pNew->szShortName, RT_MIN(cbNameLen, sizeof(uuid)));
371	uuid.Gen.u8ClockSeqHiAndReserved = (uuid.Gen.u8ClockSeqHiAndReserved & 0x3f) \| 0x80;
372	uuid.Gen.u16TimeHiAndVersion = (uuid.Gen.u16TimeHiAndVersion & 0x0fff) \| 0x4000;
373	memcpy(uuid.Gen.au8Node, pNew->MACAddress.au8, sizeof(uuid.Gen.au8Node));
374	pNew->Uuid = uuid;
375	}
376
377	pNext += pIfMsg->ifm_msglen;
378	while (pNext < pEnd)
379	{
380	struct ifa_msghdr pIfAddrMsg = (struct ifa_msghdr )pNext;
381
382	if (pIfAddrMsg->ifam_type != RTM_NEWADDR)
383	break;
384	extractAddressesToNetInfo(pIfAddrMsg->ifam_addrs,
385	(char *)(pIfAddrMsg + 1),
386	pIfAddrMsg->ifam_msglen + (char *)pIfAddrMsg,
387	pNew);
388	pNext += pIfAddrMsg->ifam_msglen;
389	}
390
391	if (pSdl->sdl_type == IFT_ETHER)
392	{
393	struct ifreq IfReq;
394	strcpy(IfReq.ifr_name, pNew->szShortName);
395	if (ioctl(sock, SIOCGIFFLAGS, &IfReq) < 0)
396	{
397	Log(("NetIfList: ioctl(SIOCGIFFLAGS) -> %d\n", errno));
398	pNew->enmStatus = NETIF_S_UNKNOWN;
399	}
400	else
401	pNew->enmStatus = (IfReq.ifr_flags & IFF_UP) ? NETIF_S_UP : NETIF_S_DOWN;
402
403	HostNetworkInterfaceType_T enmType;
404	if (strncmp("vboxnet", pNew->szName, 7))
405	enmType = HostNetworkInterfaceType_Bridged;
406	else
407	enmType = HostNetworkInterfaceType_HostOnly;
408
409	ComObjPtr<HostNetworkInterface> IfObj;
410	IfObj.createObject();
411	if (SUCCEEDED(IfObj->init(Bstr(pNew->szName), enmType, pNew)))
412	/* Make sure the default interface gets to the beginning. */
413	if (pIfMsg->ifm_index == u16DefaultIface)
414	list.push_front(IfObj);
415	else
416	list.push_back(IfObj);
417	}
418	RTMemFree(pNew);
419	}
420	for (pNIC = pEtherNICs; pNIC;)
421	{
422	void *pvFree = pNIC;
423	pNIC = pNIC->pNext;
424	RTMemFree(pvFree);
425	}
426	close(sock);
427	free(pBuf);
428	return rc;
429	}
430
431	int NetIfGetConfigByName(PNETIFINFO pInfo)
432	{
433	int rc = VINF_SUCCESS;
434	size_t cbNeeded;
435	char pBuf, pNext;
436	int aiMib[6];
437
438	aiMib[0] = CTL_NET;
439	aiMib[1] = PF_ROUTE;
440	aiMib[2] = 0;
441	aiMib[3] = 0; /* address family */
442	aiMib[4] = NET_RT_IFLIST;
443	aiMib[5] = 0;
444
445	if (sysctl(aiMib, 6, NULL, &cbNeeded, NULL, 0) < 0)
446	{
447	Log(("NetIfList: Failed to get estimate for list size (errno=%d).\n", errno));
448	return RTErrConvertFromErrno(errno);
449	}
450	if ((pBuf = (char*)malloc(cbNeeded)) == NULL)
451	return VERR_NO_MEMORY;
452	if (sysctl(aiMib, 6, pBuf, &cbNeeded, NULL, 0) < 0)
453	{
454	free(pBuf);
455	Log(("NetIfList: Failed to retrieve interface table (errno=%d).\n", errno));
456	return RTErrConvertFromErrno(errno);
457	}
458
459	int sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP);
460	if (sock < 0)
461	{
462	free(pBuf);
463	Log(("NetIfList: socket() -> %d\n", errno));
464	return RTErrConvertFromErrno(errno);
465	}
466
467	char *pEnd = pBuf + cbNeeded;
468	for (pNext = pBuf; pNext < pEnd;)
469	{
470	struct if_msghdr pIfMsg = (struct if_msghdr )pNext;
471
472	if (pIfMsg->ifm_type != RTM_IFINFO)
473	{
474	Log(("NetIfList: Got message %u while expecting %u.\n",
475	pIfMsg->ifm_type, RTM_IFINFO));
476	rc = VERR_INTERNAL_ERROR;
477	break;
478	}
479	struct sockaddr_dl pSdl = (struct sockaddr_dl )(pIfMsg + 1);
480
481	bool fSkip = !!strncmp(pInfo->szShortName, pSdl->sdl_data, pSdl->sdl_nlen)
482	\|\| pInfo->szShortName[pSdl->sdl_nlen] != '\0';
483
484	pNext += pIfMsg->ifm_msglen;
485	while (pNext < pEnd)
486	{
487	struct ifa_msghdr pIfAddrMsg = (struct ifa_msghdr )pNext;
488
489	if (pIfAddrMsg->ifam_type != RTM_NEWADDR)
490	break;
491	if (!fSkip)
492	extractAddressesToNetInfo(pIfAddrMsg->ifam_addrs,
493	(char *)(pIfAddrMsg + 1),
494	pIfAddrMsg->ifam_msglen + (char *)pIfAddrMsg,
495	pInfo);
496	pNext += pIfAddrMsg->ifam_msglen;
497	}
498
499	if (!fSkip && pSdl->sdl_type == IFT_ETHER)
500	{
501	size_t cbNameLen = pSdl->sdl_nlen + 1;
502	memcpy(pInfo->MACAddress.au8, LLADDR(pSdl), sizeof(pInfo->MACAddress.au8));
503	pInfo->enmMediumType = NETIF_T_ETHERNET;
504	/* Generate UUID from name and MAC address. */
505	RTUUID uuid;
506	RTUuidClear(&uuid);
507	memcpy(&uuid, pInfo->szShortName, RT_MIN(cbNameLen, sizeof(uuid)));
508	uuid.Gen.u8ClockSeqHiAndReserved = (uuid.Gen.u8ClockSeqHiAndReserved & 0x3f) \| 0x80;
509	uuid.Gen.u16TimeHiAndVersion = (uuid.Gen.u16TimeHiAndVersion & 0x0fff) \| 0x4000;
510	memcpy(uuid.Gen.au8Node, pInfo->MACAddress.au8, sizeof(uuid.Gen.au8Node));
511	pInfo->Uuid = uuid;
512
513	struct ifreq IfReq;
514	strcpy(IfReq.ifr_name, pInfo->szShortName);
515	if (ioctl(sock, SIOCGIFFLAGS, &IfReq) < 0)
516	{
517	Log(("NetIfList: ioctl(SIOCGIFFLAGS) -> %d\n", errno));
518	pInfo->enmStatus = NETIF_S_UNKNOWN;
519	}
520	else
521	pInfo->enmStatus = (IfReq.ifr_flags & IFF_UP) ? NETIF_S_UP : NETIF_S_DOWN;
522
523	return VINF_SUCCESS;
524	}
525	}
526	close(sock);
527	free(pBuf);
528	return rc;
529	}
530
531	#endif

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source: vbox/trunk/src/VBox/Main/src-server/darwin/NetIf-darwin.cpp@ 36986

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