| 1 | /* $Id: NetIf-linux.cpp 43507 2012-10-02 13:22:31Z vboxsync $ */
|
|---|
| 2 | /** @file
|
|---|
| 3 | * Main - NetIfList, Linux 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 | #define LOG_GROUP LOG_GROUP_MAIN
|
|---|
| 24 |
|
|---|
| 25 | #include <iprt/err.h>
|
|---|
| 26 | #include <list>
|
|---|
| 27 | #include <sys/ioctl.h>
|
|---|
| 28 | #include <net/if.h>
|
|---|
| 29 | #include <net/if_arp.h>
|
|---|
| 30 | #include <net/route.h>
|
|---|
| 31 | #include <netinet/in.h>
|
|---|
| 32 | #include <stdio.h>
|
|---|
| 33 | #include <unistd.h>
|
|---|
| 34 | #include <iprt/asm.h>
|
|---|
| 35 |
|
|---|
| 36 | #include "HostNetworkInterfaceImpl.h"
|
|---|
| 37 | #include "netif.h"
|
|---|
| 38 | #include "Logging.h"
|
|---|
| 39 |
|
|---|
| 40 | static int getDefaultIfaceName(char *pszName)
|
|---|
| 41 | {
|
|---|
| 42 | FILE *fp = fopen("/proc/net/route", "r");
|
|---|
| 43 | char szBuf[1024];
|
|---|
| 44 | char szIfName[17];
|
|---|
| 45 | char szAddr[129];
|
|---|
| 46 | char szGateway[129];
|
|---|
| 47 | char szMask[129];
|
|---|
| 48 | int iTmp;
|
|---|
| 49 | unsigned uFlags;
|
|---|
| 50 |
|
|---|
| 51 | if (fp)
|
|---|
| 52 | {
|
|---|
| 53 | while (fgets(szBuf, sizeof(szBuf)-1, fp))
|
|---|
| 54 | {
|
|---|
| 55 | int n = sscanf(szBuf, "%16s %128s %128s %X %d %d %d %128s %d %d %d\n",
|
|---|
| 56 | szIfName, szAddr, szGateway, &uFlags, &iTmp, &iTmp, &iTmp,
|
|---|
| 57 | szMask, &iTmp, &iTmp, &iTmp);
|
|---|
| 58 | if (n < 10 || !(uFlags & RTF_UP))
|
|---|
| 59 | continue;
|
|---|
| 60 |
|
|---|
| 61 | if (strcmp(szAddr, "00000000") == 0 && strcmp(szMask, "00000000") == 0)
|
|---|
| 62 | {
|
|---|
| 63 | fclose(fp);
|
|---|
| 64 | strncpy(pszName, szIfName, 16);
|
|---|
| 65 | pszName[16] = 0;
|
|---|
| 66 | return VINF_SUCCESS;
|
|---|
| 67 | }
|
|---|
| 68 | }
|
|---|
| 69 | fclose(fp);
|
|---|
| 70 | }
|
|---|
| 71 | return VERR_INTERNAL_ERROR;
|
|---|
| 72 | }
|
|---|
| 73 |
|
|---|
| 74 | static int getInterfaceInfo(int iSocket, const char *pszName, PNETIFINFO pInfo)
|
|---|
| 75 | {
|
|---|
| 76 | // Zeroing out pInfo is a bad idea as it should contain both short and long names at
|
|---|
| 77 | // this point. So make sure the structure is cleared by the caller if necessary!
|
|---|
| 78 | // memset(pInfo, 0, sizeof(*pInfo));
|
|---|
| 79 | struct ifreq Req;
|
|---|
| 80 | memset(&Req, 0, sizeof(Req));
|
|---|
| 81 | strncpy(Req.ifr_name, pszName, sizeof(Req.ifr_name) - 1);
|
|---|
| 82 | if (ioctl(iSocket, SIOCGIFHWADDR, &Req) >= 0)
|
|---|
| 83 | {
|
|---|
| 84 | switch (Req.ifr_hwaddr.sa_family)
|
|---|
| 85 | {
|
|---|
| 86 | case ARPHRD_ETHER:
|
|---|
| 87 | pInfo->enmMediumType = NETIF_T_ETHERNET;
|
|---|
| 88 | break;
|
|---|
| 89 | default:
|
|---|
| 90 | pInfo->enmMediumType = NETIF_T_UNKNOWN;
|
|---|
| 91 | break;
|
|---|
| 92 | }
|
|---|
| 93 | /* Generate UUID from name and MAC address. */
|
|---|
| 94 | RTUUID uuid;
|
|---|
| 95 | RTUuidClear(&uuid);
|
|---|
| 96 | memcpy(&uuid, Req.ifr_name, RT_MIN(sizeof(Req.ifr_name), sizeof(uuid)));
|
|---|
| 97 | uuid.Gen.u8ClockSeqHiAndReserved = (uuid.Gen.u8ClockSeqHiAndReserved & 0x3f) | 0x80;
|
|---|
| 98 | uuid.Gen.u16TimeHiAndVersion = (uuid.Gen.u16TimeHiAndVersion & 0x0fff) | 0x4000;
|
|---|
| 99 | memcpy(uuid.Gen.au8Node, &Req.ifr_hwaddr.sa_data, sizeof(uuid.Gen.au8Node));
|
|---|
| 100 | pInfo->Uuid = uuid;
|
|---|
| 101 |
|
|---|
| 102 | memcpy(&pInfo->MACAddress, Req.ifr_hwaddr.sa_data, sizeof(pInfo->MACAddress));
|
|---|
| 103 |
|
|---|
| 104 | if (ioctl(iSocket, SIOCGIFADDR, &Req) >= 0)
|
|---|
| 105 | memcpy(pInfo->IPAddress.au8,
|
|---|
| 106 | &((struct sockaddr_in *)&Req.ifr_addr)->sin_addr.s_addr,
|
|---|
| 107 | sizeof(pInfo->IPAddress.au8));
|
|---|
| 108 |
|
|---|
| 109 | if (ioctl(iSocket, SIOCGIFNETMASK, &Req) >= 0)
|
|---|
| 110 | memcpy(pInfo->IPNetMask.au8,
|
|---|
| 111 | &((struct sockaddr_in *)&Req.ifr_addr)->sin_addr.s_addr,
|
|---|
| 112 | sizeof(pInfo->IPNetMask.au8));
|
|---|
| 113 |
|
|---|
| 114 | if (ioctl(iSocket, SIOCGIFFLAGS, &Req) >= 0)
|
|---|
| 115 | pInfo->enmStatus = Req.ifr_flags & IFF_UP ? NETIF_S_UP : NETIF_S_DOWN;
|
|---|
| 116 |
|
|---|
| 117 | FILE *fp = fopen("/proc/net/if_inet6", "r");
|
|---|
| 118 | if (fp)
|
|---|
| 119 | {
|
|---|
| 120 | RTNETADDRIPV6 IPv6Address;
|
|---|
| 121 | unsigned uIndex, uLength, uScope, uTmp;
|
|---|
| 122 | char szName[30];
|
|---|
| 123 | for (;;)
|
|---|
| 124 | {
|
|---|
| 125 | memset(szName, 0, sizeof(szName));
|
|---|
| 126 | int n = fscanf(fp,
|
|---|
| 127 | "%08x%08x%08x%08x"
|
|---|
| 128 | " %02x %02x %02x %02x %20s\n",
|
|---|
| 129 | &IPv6Address.au32[0], &IPv6Address.au32[1],
|
|---|
| 130 | &IPv6Address.au32[2], &IPv6Address.au32[3],
|
|---|
| 131 | &uIndex, &uLength, &uScope, &uTmp, szName);
|
|---|
| 132 | if (n == EOF)
|
|---|
| 133 | break;
|
|---|
| 134 | if (n != 9 || uLength > 128)
|
|---|
| 135 | {
|
|---|
| 136 | Log(("getInterfaceInfo: Error while reading /proc/net/if_inet6, n=%d uLength=%u\n",
|
|---|
| 137 | n, uLength));
|
|---|
| 138 | break;
|
|---|
| 139 | }
|
|---|
| 140 | if (!strcmp(Req.ifr_name, szName))
|
|---|
| 141 | {
|
|---|
| 142 | pInfo->IPv6Address.au32[0] = htonl(IPv6Address.au32[0]);
|
|---|
| 143 | pInfo->IPv6Address.au32[1] = htonl(IPv6Address.au32[1]);
|
|---|
| 144 | pInfo->IPv6Address.au32[2] = htonl(IPv6Address.au32[2]);
|
|---|
| 145 | pInfo->IPv6Address.au32[3] = htonl(IPv6Address.au32[3]);
|
|---|
| 146 | ASMBitSetRange(&pInfo->IPv6NetMask, 0, uLength);
|
|---|
| 147 | }
|
|---|
| 148 | }
|
|---|
| 149 | fclose(fp);
|
|---|
| 150 | }
|
|---|
| 151 | /*
|
|---|
| 152 | * I wish I could do simple ioctl here, but older kernels require root
|
|---|
| 153 | * privileges for any ethtool commands.
|
|---|
| 154 | */
|
|---|
| 155 | char szBuf[256];
|
|---|
| 156 | /* First, we try to retrieve the speed via sysfs. */
|
|---|
| 157 | RTStrPrintf(szBuf, sizeof(szBuf), "/sys/class/net/%s/speed", pszName);
|
|---|
| 158 | fp = fopen(szBuf, "r");
|
|---|
| 159 | if (fp && fscanf(fp, "%u", &pInfo->uSpeedMbytes) == 1)
|
|---|
| 160 | fclose(fp);
|
|---|
| 161 | else
|
|---|
| 162 | {
|
|---|
| 163 | /* Failed to get speed via sysfs, go to plan B. */
|
|---|
| 164 | int rc = NetIfAdpCtlOut(pszName, "info", szBuf, sizeof(szBuf));
|
|---|
| 165 | if (RT_SUCCESS(rc))
|
|---|
| 166 | {
|
|---|
| 167 | pInfo->uSpeedMbytes = RTStrToUInt32(szBuf);
|
|---|
| 168 | }
|
|---|
| 169 | else
|
|---|
| 170 | return rc;
|
|---|
| 171 | }
|
|---|
| 172 | }
|
|---|
| 173 | return VINF_SUCCESS;
|
|---|
| 174 | }
|
|---|
| 175 |
|
|---|
| 176 | int NetIfList(std::list <ComObjPtr<HostNetworkInterface> > &list)
|
|---|
| 177 | {
|
|---|
| 178 | char szDefaultIface[256];
|
|---|
| 179 | int rc = getDefaultIfaceName(szDefaultIface);
|
|---|
| 180 | if (RT_FAILURE(rc))
|
|---|
| 181 | {
|
|---|
| 182 | Log(("NetIfList: Failed to find default interface.\n"));
|
|---|
| 183 | szDefaultIface[0] = 0;
|
|---|
| 184 | }
|
|---|
| 185 | int sock = socket(AF_INET, SOCK_DGRAM, 0);
|
|---|
| 186 | if (sock >= 0)
|
|---|
| 187 | {
|
|---|
| 188 | FILE *fp = fopen("/proc/net/dev", "r");
|
|---|
| 189 | if (fp)
|
|---|
| 190 | {
|
|---|
| 191 | char buf[256];
|
|---|
| 192 | while (fgets(buf, sizeof(buf), fp))
|
|---|
| 193 | {
|
|---|
| 194 | char *pszEndOfName = strchr(buf, ':');
|
|---|
| 195 | if (!pszEndOfName)
|
|---|
| 196 | continue;
|
|---|
| 197 | *pszEndOfName = 0;
|
|---|
| 198 | int iFirstNonWS = strspn(buf, " ");
|
|---|
| 199 | char *pszName = buf+iFirstNonWS;
|
|---|
| 200 | NETIFINFO Info;
|
|---|
| 201 | RT_ZERO(Info);
|
|---|
| 202 | rc = getInterfaceInfo(sock, pszName, &Info);
|
|---|
| 203 | if (RT_FAILURE(rc))
|
|---|
| 204 | break;
|
|---|
| 205 | if (Info.enmMediumType == NETIF_T_ETHERNET)
|
|---|
| 206 | {
|
|---|
| 207 | ComObjPtr<HostNetworkInterface> IfObj;
|
|---|
| 208 | IfObj.createObject();
|
|---|
| 209 |
|
|---|
| 210 | HostNetworkInterfaceType_T enmType;
|
|---|
| 211 | if (strncmp("vboxnet", pszName, 7))
|
|---|
| 212 | enmType = HostNetworkInterfaceType_Bridged;
|
|---|
| 213 | else
|
|---|
| 214 | enmType = HostNetworkInterfaceType_HostOnly;
|
|---|
| 215 |
|
|---|
| 216 | if (SUCCEEDED(IfObj->init(Bstr(pszName), enmType, &Info)))
|
|---|
| 217 | {
|
|---|
| 218 | if (strcmp(pszName, szDefaultIface) == 0)
|
|---|
| 219 | list.push_front(IfObj);
|
|---|
| 220 | else
|
|---|
| 221 | list.push_back(IfObj);
|
|---|
| 222 | }
|
|---|
| 223 | }
|
|---|
| 224 |
|
|---|
| 225 | }
|
|---|
| 226 | fclose(fp);
|
|---|
| 227 | }
|
|---|
| 228 | close(sock);
|
|---|
| 229 | }
|
|---|
| 230 | else
|
|---|
| 231 | rc = VERR_INTERNAL_ERROR;
|
|---|
| 232 |
|
|---|
| 233 | return rc;
|
|---|
| 234 | }
|
|---|
| 235 |
|
|---|
| 236 | int NetIfGetConfigByName(PNETIFINFO pInfo)
|
|---|
| 237 | {
|
|---|
| 238 | int rc = VINF_SUCCESS;
|
|---|
| 239 | int sock = socket(AF_INET, SOCK_DGRAM, 0);
|
|---|
| 240 | if (sock < 0)
|
|---|
| 241 | return VERR_NOT_IMPLEMENTED;
|
|---|
| 242 | rc = getInterfaceInfo(sock, pInfo->szShortName, pInfo);
|
|---|
| 243 | close(sock);
|
|---|
| 244 | return rc;
|
|---|
| 245 | }
|
|---|
