VirtualBox

source: vbox/trunk/src/VBox/Main/src-server/generic/NetIf-generic.cpp@ 78242

Last change on this file since 78242 was 77436, checked in by vboxsync, 6 years ago

Main: Eradicate the use of BSTR in regular API code, there were leaks in almost every occurrence. Also do some Bstr->Utf8Str shuffling to reduce the number of conversions.
  • Property svn:eol-style set to native
  • Property svn:keywords set to Author Date Id Revision
File size: 14.0 KB
Line 
1/* $Id: NetIf-generic.cpp 77436 2019-02-22 17:40:00Z vboxsync $ */
2/** @file
3 * VirtualBox Main - Generic NetIf implementation.
4 */
5
6/*
7 * Copyright (C) 2009-2019 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#include <VBox/err.h>
19#include <VBox/log.h>
20#include <iprt/process.h>
21#include <iprt/env.h>
22#include <iprt/path.h>
23#include <iprt/param.h>
24#include <sys/ioctl.h>
25#include <netinet/in.h>
26#include <net/if.h>
27#include <errno.h>
28#include <unistd.h>
29
30#if defined(RT_OS_SOLARIS)
31# include <sys/sockio.h>
32#endif
33
34#if defined(RT_OS_LINUX) || defined(RT_OS_DARWIN)
35# include <cstdio>
36#endif
37
38#include "HostNetworkInterfaceImpl.h"
39#include "ProgressImpl.h"
40#include "VirtualBoxImpl.h"
41#include "netif.h"
42
43#define VBOXNETADPCTL_NAME "VBoxNetAdpCtl"
44
45static int NetIfAdpCtl(const char * pcszIfName, const char *pszAddr, const char *pszOption, const char *pszMask)
46{
47 const char *args[] = { NULL, pcszIfName, pszAddr, pszOption, pszMask, NULL };
48
49 char szAdpCtl[RTPATH_MAX];
50 int rc = RTPathExecDir(szAdpCtl, sizeof(szAdpCtl) - sizeof("/" VBOXNETADPCTL_NAME));
51 if (RT_FAILURE(rc))
52 {
53 LogRel(("NetIfAdpCtl: failed to get program path, rc=%Rrc.\n", rc));
54 return rc;
55 }
56 strcat(szAdpCtl, "/" VBOXNETADPCTL_NAME);
57 args[0] = szAdpCtl;
58 if (!RTPathExists(szAdpCtl))
59 {
60 LogRel(("NetIfAdpCtl: path %s does not exist. Failed to run " VBOXNETADPCTL_NAME " helper.\n",
61 szAdpCtl));
62 return VERR_FILE_NOT_FOUND;
63 }
64
65 RTPROCESS pid;
66 rc = RTProcCreate(szAdpCtl, args, RTENV_DEFAULT, 0, &pid);
67 if (RT_SUCCESS(rc))
68 {
69 RTPROCSTATUS Status;
70 rc = RTProcWait(pid, 0, &Status);
71 if ( RT_SUCCESS(rc)
72 && Status.iStatus == 0
73 && Status.enmReason == RTPROCEXITREASON_NORMAL)
74 return VINF_SUCCESS;
75 }
76 else
77 LogRel(("NetIfAdpCtl: failed to create process for %s: %Rrc\n", szAdpCtl, rc));
78 return rc;
79}
80
81static int NetIfAdpCtl(HostNetworkInterface * pIf, const char *pszAddr, const char *pszOption, const char *pszMask)
82{
83 Bstr interfaceName;
84 pIf->COMGETTER(Name)(interfaceName.asOutParam());
85 Utf8Str strName(interfaceName);
86 return NetIfAdpCtl(strName.c_str(), pszAddr, pszOption, pszMask);
87}
88
89int NetIfAdpCtlOut(const char * pcszName, const char * pcszCmd, char *pszBuffer, size_t cBufSize)
90{
91 char szAdpCtl[RTPATH_MAX];
92 int rc = RTPathExecDir(szAdpCtl, sizeof(szAdpCtl) - sizeof("/" VBOXNETADPCTL_NAME " ") - strlen(pcszCmd));
93 if (RT_FAILURE(rc))
94 {
95 LogRel(("NetIfAdpCtlOut: Failed to get program path, rc=%Rrc\n", rc));
96 return VERR_INVALID_PARAMETER;
97 }
98 strcat(szAdpCtl, "/" VBOXNETADPCTL_NAME " ");
99 if (pcszName && strlen(pcszName) <= RTPATH_MAX - strlen(szAdpCtl) - 1 - strlen(pcszCmd))
100 {
101 strcat(szAdpCtl, pcszName);
102 strcat(szAdpCtl, " ");
103 strcat(szAdpCtl, pcszCmd);
104 }
105 else
106 {
107 LogRel(("NetIfAdpCtlOut: Command line is too long: %s%s %s\n", szAdpCtl, pcszName, pcszCmd));
108 return VERR_INVALID_PARAMETER;
109 }
110 if (strlen(szAdpCtl) < RTPATH_MAX - sizeof(" 2>&1"))
111 strcat(szAdpCtl, " 2>&1");
112 FILE *fp = popen(szAdpCtl, "r");
113 if (fp)
114 {
115 if (fgets(pszBuffer, (int)cBufSize, fp))
116 {
117 if (!strncmp(VBOXNETADPCTL_NAME ":", pszBuffer, sizeof(VBOXNETADPCTL_NAME)))
118 {
119 LogRel(("NetIfAdpCtlOut: %s", pszBuffer));
120 rc = VERR_INTERNAL_ERROR;
121 }
122 }
123 else
124 {
125 LogRel(("NetIfAdpCtlOut: No output from " VBOXNETADPCTL_NAME));
126 rc = VERR_INTERNAL_ERROR;
127 }
128 pclose(fp);
129 }
130 return rc;
131}
132
133int NetIfEnableStaticIpConfig(VirtualBox * /* vBox */, HostNetworkInterface * pIf, ULONG aOldIp, ULONG aNewIp, ULONG aMask)
134{
135 const char *pszOption, *pszMask;
136 char szAddress[16]; /* 4*3 + 3*1 + 1 */
137 char szNetMask[16]; /* 4*3 + 3*1 + 1 */
138 uint8_t *pu8Addr = (uint8_t *)&aNewIp;
139 uint8_t *pu8Mask = (uint8_t *)&aMask;
140 if (aNewIp == 0)
141 {
142 pu8Addr = (uint8_t *)&aOldIp;
143 pszOption = "remove";
144 pszMask = NULL;
145 }
146 else
147 {
148 pszOption = "netmask";
149 pszMask = szNetMask;
150 RTStrPrintf(szNetMask, sizeof(szNetMask), "%d.%d.%d.%d",
151 pu8Mask[0], pu8Mask[1], pu8Mask[2], pu8Mask[3]);
152 }
153 RTStrPrintf(szAddress, sizeof(szAddress), "%d.%d.%d.%d",
154 pu8Addr[0], pu8Addr[1], pu8Addr[2], pu8Addr[3]);
155 return NetIfAdpCtl(pIf, szAddress, pszOption, pszMask);
156}
157
158int NetIfEnableStaticIpConfigV6(VirtualBox * /* vBox */, HostNetworkInterface * pIf, const Utf8Str &aOldIPV6Address,
159 const Utf8Str &aIPV6Address, ULONG aIPV6MaskPrefixLength)
160{
161 char szAddress[5*8 + 1 + 5 + 1];
162 if (aIPV6Address.length())
163 {
164 RTStrPrintf(szAddress, sizeof(szAddress), "%s/%d",
165 aIPV6Address.c_str(), aIPV6MaskPrefixLength);
166 return NetIfAdpCtl(pIf, szAddress, NULL, NULL);
167 }
168 else
169 {
170 RTStrPrintf(szAddress, sizeof(szAddress), "%s",
171 aOldIPV6Address.c_str());
172 return NetIfAdpCtl(pIf, szAddress, "remove", NULL);
173 }
174}
175
176int NetIfEnableDynamicIpConfig(VirtualBox * /* vBox */, HostNetworkInterface * /* pIf */)
177{
178 return VERR_NOT_IMPLEMENTED;
179}
180
181
182int NetIfCreateHostOnlyNetworkInterface(VirtualBox *pVirtualBox,
183 IHostNetworkInterface **aHostNetworkInterface,
184 IProgress **aProgress,
185 const char *pcszName)
186{
187#if defined(RT_OS_LINUX) || defined(RT_OS_DARWIN) || defined(RT_OS_FREEBSD)
188 /* create a progress object */
189 ComObjPtr<Progress> progress;
190 progress.createObject();
191
192 ComPtr<IHost> host;
193 HRESULT hrc = pVirtualBox->COMGETTER(Host)(host.asOutParam());
194 if (SUCCEEDED(hrc))
195 {
196 hrc = progress->init(pVirtualBox, host,
197 "Creating host only network interface",
198 FALSE /* aCancelable */);
199 if (SUCCEEDED(hrc))
200 {
201 progress.queryInterfaceTo(aProgress);
202
203 char szAdpCtl[RTPATH_MAX];
204 int rc = RTPathExecDir(szAdpCtl, sizeof(szAdpCtl) - sizeof("/" VBOXNETADPCTL_NAME " add"));
205 if (RT_FAILURE(rc))
206 {
207 progress->i_notifyComplete(E_FAIL,
208 COM_IIDOF(IHostNetworkInterface),
209 HostNetworkInterface::getStaticComponentName(),
210 "Failed to get program path, rc=%Rrc\n", rc);
211 return rc;
212 }
213 strcat(szAdpCtl, "/" VBOXNETADPCTL_NAME " ");
214 if (pcszName && strlen(pcszName) <= RTPATH_MAX - strlen(szAdpCtl) - sizeof(" add"))
215 {
216 strcat(szAdpCtl, pcszName);
217 strcat(szAdpCtl, " add");
218 }
219 else
220 strcat(szAdpCtl, "add");
221 if (strlen(szAdpCtl) < RTPATH_MAX - sizeof(" 2>&1"))
222 strcat(szAdpCtl, " 2>&1");
223 FILE *fp = popen(szAdpCtl, "r");
224
225 if (fp)
226 {
227 char szBuf[128]; /* We are not interested in long error messages. */
228 if (fgets(szBuf, sizeof(szBuf), fp))
229 {
230 /* Remove trailing new line characters. */
231 char *pLast = szBuf + strlen(szBuf) - 1;
232 if (pLast >= szBuf && *pLast == '\n')
233 *pLast = 0;
234
235 if (!strncmp(VBOXNETADPCTL_NAME ":", szBuf, sizeof(VBOXNETADPCTL_NAME)))
236 {
237 progress->i_notifyComplete(E_FAIL,
238 COM_IIDOF(IHostNetworkInterface),
239 HostNetworkInterface::getStaticComponentName(),
240 "%s", szBuf);
241 pclose(fp);
242 return E_FAIL;
243 }
244
245 size_t cbNameLen = strlen(szBuf) + 1;
246 PNETIFINFO pInfo = (PNETIFINFO)RTMemAllocZ(RT_UOFFSETOF_DYN(NETIFINFO, szName[cbNameLen]));
247 if (!pInfo)
248 rc = VERR_NO_MEMORY;
249 else
250 {
251 strcpy(pInfo->szShortName, szBuf);
252 strcpy(pInfo->szName, szBuf);
253 rc = NetIfGetConfigByName(pInfo);
254 if (RT_FAILURE(rc))
255 {
256 progress->i_notifyComplete(E_FAIL,
257 COM_IIDOF(IHostNetworkInterface),
258 HostNetworkInterface::getStaticComponentName(),
259 "Failed to get config info for %s (as reported by '" VBOXNETADPCTL_NAME " add')\n", szBuf);
260 }
261 else
262 {
263 Utf8Str IfName(szBuf);
264 /* create a new uninitialized host interface object */
265 ComObjPtr<HostNetworkInterface> iface;
266 iface.createObject();
267 iface->init(IfName, HostNetworkInterfaceType_HostOnly, pInfo);
268 iface->i_setVirtualBox(pVirtualBox);
269 iface.queryInterfaceTo(aHostNetworkInterface);
270 }
271 RTMemFree(pInfo);
272 }
273 if ((rc = pclose(fp)) != 0)
274 {
275 progress->i_notifyComplete(E_FAIL,
276 COM_IIDOF(IHostNetworkInterface),
277 HostNetworkInterface::getStaticComponentName(),
278 "Failed to execute '" VBOXNETADPCTL_NAME " add' (exit status: %d)", rc);
279 rc = VERR_INTERNAL_ERROR;
280 }
281 }
282 else
283 {
284 /* Failed to add an interface */
285 rc = VERR_PERMISSION_DENIED;
286 progress->i_notifyComplete(E_FAIL,
287 COM_IIDOF(IHostNetworkInterface),
288 HostNetworkInterface::getStaticComponentName(),
289 "Failed to execute '" VBOXNETADPCTL_NAME " add' (exit status: %d). Check permissions!", rc);
290 pclose(fp);
291 }
292 }
293 if (RT_SUCCESS(rc))
294 progress->i_notifyComplete(rc);
295 else
296 hrc = E_FAIL;
297 }
298 }
299
300 return hrc;
301
302#else
303 NOREF(pVirtualBox);
304 NOREF(aHostNetworkInterface);
305 NOREF(aProgress);
306 NOREF(pcszName);
307 return VERR_NOT_IMPLEMENTED;
308#endif
309}
310
311int NetIfRemoveHostOnlyNetworkInterface(VirtualBox *pVirtualBox, const Guid &aId,
312 IProgress **aProgress)
313{
314#if defined(RT_OS_LINUX) || defined(RT_OS_DARWIN) || defined(RT_OS_FREEBSD)
315 /* create a progress object */
316 ComObjPtr<Progress> progress;
317 progress.createObject();
318 ComPtr<IHost> host;
319 int rc = VINF_SUCCESS;
320 HRESULT hr = pVirtualBox->COMGETTER(Host)(host.asOutParam());
321 if (SUCCEEDED(hr))
322 {
323 Bstr ifname;
324 ComPtr<IHostNetworkInterface> iface;
325 if (FAILED(host->FindHostNetworkInterfaceById(aId.toUtf16().raw(), iface.asOutParam())))
326 return VERR_INVALID_PARAMETER;
327 iface->COMGETTER(Name)(ifname.asOutParam());
328 if (ifname.isEmpty())
329 return VERR_INTERNAL_ERROR;
330
331 rc = progress->init(pVirtualBox, host,
332 "Removing host network interface",
333 FALSE /* aCancelable */);
334 if (SUCCEEDED(rc))
335 {
336 progress.queryInterfaceTo(aProgress);
337 rc = NetIfAdpCtl(Utf8Str(ifname).c_str(), "remove", NULL, NULL);
338 if (RT_FAILURE(rc))
339 progress->i_notifyComplete(E_FAIL,
340 COM_IIDOF(IHostNetworkInterface),
341 HostNetworkInterface::getStaticComponentName(),
342 "Failed to execute '" VBOXNETADPCTL_NAME "' (exit status: %d)", rc);
343 else
344 progress->i_notifyComplete(S_OK);
345 }
346 }
347 else
348 {
349 progress->i_notifyComplete(hr);
350 rc = VERR_INTERNAL_ERROR;
351 }
352 return rc;
353#else
354 NOREF(pVirtualBox);
355 NOREF(aId);
356 NOREF(aProgress);
357 return VERR_NOT_IMPLEMENTED;
358#endif
359}
360
361int NetIfGetConfig(HostNetworkInterface * /* pIf */, NETIFINFO *)
362{
363 return VERR_NOT_IMPLEMENTED;
364}
365
366int NetIfDhcpRediscover(VirtualBox * /* pVBox */, HostNetworkInterface * /* pIf */)
367{
368 return VERR_NOT_IMPLEMENTED;
369}
370
371/**
372 * Obtain the current state of the interface.
373 *
374 * @returns VBox status code.
375 *
376 * @param pcszIfName Interface name.
377 * @param penmState Where to store the retrieved state.
378 */
379int NetIfGetState(const char *pcszIfName, NETIFSTATUS *penmState)
380{
381 int sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP);
382 if (sock < 0)
383 return VERR_OUT_OF_RESOURCES;
384 struct ifreq Req;
385 RT_ZERO(Req);
386 RTStrCopy(Req.ifr_name, sizeof(Req.ifr_name), pcszIfName);
387 if (ioctl(sock, SIOCGIFFLAGS, &Req) < 0)
388 {
389 Log(("NetIfGetState: ioctl(SIOCGIFFLAGS) -> %d\n", errno));
390 *penmState = NETIF_S_UNKNOWN;
391 }
392 else
393 *penmState = (Req.ifr_flags & IFF_UP) ? NETIF_S_UP : NETIF_S_DOWN;
394 close(sock);
395 return VINF_SUCCESS;
396}
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