1 | /* $Id: NetIf-freebsd.cpp 106061 2024-09-16 14:03:52Z vboxsync $ */
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2 | /** @file
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3 | * Main - NetIfList, FreeBSD implementation.
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4 | */
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5 |
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6 | /*
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7 | * Copyright (C) 2008-2024 Oracle and/or its affiliates.
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8 | *
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9 | * This file is part of VirtualBox base platform packages, as
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10 | * available from https://www.virtualbox.org.
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11 | *
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12 | * This program is free software; you can redistribute it and/or
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13 | * modify it under the terms of the GNU General Public License
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14 | * as published by the Free Software Foundation, in version 3 of the
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15 | * License.
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16 | *
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17 | * This program is distributed in the hope that it will be useful, but
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18 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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20 | * General Public License for more details.
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21 | *
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22 | * You should have received a copy of the GNU General Public License
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23 | * along with this program; if not, see <https://www.gnu.org/licenses>.
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24 | *
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25 | * SPDX-License-Identifier: GPL-3.0-only
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26 | */
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27 |
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28 | /*
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29 | * Original (C) 2009 Fredrik Lindberg <fli@shapeshifter.se>. Contributed
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30 | * to VirtualBox under the MIT license by the author.
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31 | */
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32 |
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33 |
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34 | /*********************************************************************************************************************************
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35 | * Header Files *
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36 | *********************************************************************************************************************************/
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37 | #define LOG_GROUP LOG_GROUP_MAIN_HOST
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38 | #include <sys/types.h>
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39 |
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40 | #include <sys/sysctl.h>
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41 | #include <sys/socket.h>
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42 | #include <sys/sockio.h>
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43 | #include <net/if.h>
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44 | #include <net/if_types.h>
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45 | #include <net80211/ieee80211_ioctl.h>
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46 |
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47 | #include <net/route.h>
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48 | /*
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49 | * route.h includes net/radix.h which for some reason defines Free as a wrapper
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50 | * around free. This collides with Free defined in xpcom/include/nsIMemory.h
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51 | * Undefine it and hope for the best
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52 | */
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53 | #undef Free
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54 |
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55 | #include <net/if_dl.h>
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56 | #include <netinet/in.h>
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57 |
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58 | #include <stdlib.h>
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59 | #include <stdio.h>
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60 | #include <unistd.h>
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61 | #include <errno.h>
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62 |
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63 | #include <list>
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64 |
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65 | #include "HostNetworkInterfaceImpl.h"
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66 | #include "netif.h"
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67 | #include "LoggingNew.h"
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68 |
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69 | #define ROUNDUP(a) \
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70 | ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long))
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71 | #define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len))
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72 |
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73 | void extractAddresses(int iAddrMask, caddr_t cp, caddr_t cplim, struct sockaddr **pAddresses)
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74 | {
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75 | struct sockaddr *sa;
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76 |
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77 | for (int i = 0; i < RTAX_MAX && cp < cplim; i++) {
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78 | if (!(iAddrMask & (1 << i)))
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79 | continue;
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80 |
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81 | sa = (struct sockaddr *)cp;
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82 |
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83 | pAddresses[i] = sa;
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84 |
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85 | ADVANCE(cp, sa);
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86 | }
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87 | }
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88 |
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89 | static int getDefaultIfaceIndex(unsigned short *pu16Index, int family)
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90 | {
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91 | size_t cbNeeded;
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92 | char *pBuf, *pNext;
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93 | int aiMib[6];
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94 | struct sockaddr *addresses[RTAX_MAX];
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95 | aiMib[0] = CTL_NET;
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96 | aiMib[1] = PF_ROUTE;
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97 | aiMib[2] = 0;
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98 | aiMib[3] = family; /* address family */
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99 | aiMib[4] = NET_RT_DUMP;
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100 | aiMib[5] = 0;
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101 |
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102 | if (sysctl(aiMib, 6, NULL, &cbNeeded, NULL, 0) < 0)
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103 | {
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104 | Log(("getDefaultIfaceIndex: Failed to get estimate for list size (errno=%d).\n", errno));
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105 | return RTErrConvertFromErrno(errno);
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106 | }
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107 | if ((pBuf = (char*)malloc(cbNeeded)) == NULL)
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108 | return VERR_NO_MEMORY;
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109 | if (sysctl(aiMib, 6, pBuf, &cbNeeded, NULL, 0) < 0)
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110 | {
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111 | free(pBuf);
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112 | Log(("getDefaultIfaceIndex: Failed to retrieve interface table (errno=%d).\n", errno));
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113 | return RTErrConvertFromErrno(errno);
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114 | }
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115 |
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116 | char *pEnd = pBuf + cbNeeded;
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117 | struct rt_msghdr *pRtMsg;
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118 | for (pNext = pBuf; pNext < pEnd; pNext += pRtMsg->rtm_msglen)
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119 | {
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120 | pRtMsg = (struct rt_msghdr *)pNext;
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121 |
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122 | if (pRtMsg->rtm_type != RTM_GET)
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123 | {
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124 | Log(("getDefaultIfaceIndex: Got message %u while expecting %u.\n",
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125 | pRtMsg->rtm_type, RTM_GET));
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126 | //vrc = VERR_INTERNAL_ERROR;
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127 | continue;
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128 | }
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129 | if ((char*)(pRtMsg + 1) < pEnd)
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130 | {
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131 | /* Extract addresses from the message. */
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132 | extractAddresses(pRtMsg->rtm_addrs, (char *)(pRtMsg + 1),
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133 | pRtMsg->rtm_msglen + (char *)pRtMsg, addresses);
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134 | if ((pRtMsg->rtm_addrs & RTA_DST))
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135 | {
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136 | if (addresses[RTAX_DST]->sa_family != AF_INET)
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137 | continue;
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138 | struct sockaddr_in *addr = (struct sockaddr_in *)addresses[RTAX_DST];
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139 | struct sockaddr_in *mask = (struct sockaddr_in *)addresses[RTAX_NETMASK];
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140 | if ((addr->sin_addr.s_addr == INADDR_ANY) &&
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141 | mask &&
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142 | (ntohl(mask->sin_addr.s_addr) == 0L ||
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143 | mask->sin_len == 0))
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144 | {
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145 | *pu16Index = pRtMsg->rtm_index;
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146 | free(pBuf);
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147 | return VINF_SUCCESS;
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148 | }
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149 | }
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150 | }
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151 | }
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152 | free(pBuf);
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153 | return VERR_INTERNAL_ERROR;
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154 |
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155 | }
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156 |
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157 | void extractAddressesToNetInfo(int iAddrMask, caddr_t cp, caddr_t cplim, PNETIFINFO pInfo)
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158 | {
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159 | struct sockaddr *addresses[RTAX_MAX];
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160 |
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161 | extractAddresses(iAddrMask, cp, cplim, addresses);
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162 | switch (addresses[RTAX_IFA]->sa_family)
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163 | {
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164 | case AF_INET:
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165 | if (!pInfo->IPAddress.u)
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166 | {
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167 | pInfo->IPAddress.u = ((struct sockaddr_in *)addresses[RTAX_IFA])->sin_addr.s_addr;
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168 | pInfo->IPNetMask.u = ((struct sockaddr_in *)addresses[RTAX_NETMASK])->sin_addr.s_addr;
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169 | }
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170 | break;
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171 | case AF_INET6:
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172 | if (!pInfo->IPv6Address.s.Lo && !pInfo->IPv6Address.s.Hi)
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173 | {
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174 | memcpy(pInfo->IPv6Address.au8,
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175 | ((struct sockaddr_in6 *)addresses[RTAX_IFA])->sin6_addr.__u6_addr.__u6_addr8,
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176 | sizeof(pInfo->IPv6Address));
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177 | memcpy(pInfo->IPv6NetMask.au8,
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178 | ((struct sockaddr_in6 *)addresses[RTAX_NETMASK])->sin6_addr.__u6_addr.__u6_addr8,
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179 | sizeof(pInfo->IPv6NetMask));
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180 | }
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181 | break;
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182 | default:
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183 | Log(("NetIfList: Unsupported address family: %u\n", addresses[RTAX_IFA]->sa_family));
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184 | break;
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185 | }
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186 | }
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187 |
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188 |
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189 | static bool isWireless(const char *pszName)
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190 | {
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191 | bool fWireless = false;
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192 | int iSock = socket(AF_INET, SOCK_DGRAM, 0);
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193 | if (iSock >= 0)
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194 | {
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195 | struct ieee80211req WReq;
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196 | uint8_t abData[32];
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197 |
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198 | RT_ZERO(WReq);
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199 | strncpy(WReq.i_name, pszName, sizeof(WReq.i_name));
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200 | WReq.i_type = IEEE80211_IOC_SSID;
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201 | WReq.i_val = -1;
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202 | WReq.i_data = abData;
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203 | WReq.i_len = sizeof(abData);
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204 |
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205 | fWireless = ioctl(iSock, SIOCG80211, &WReq) >= 0;
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206 | close(iSock);
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207 | }
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208 |
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209 | return fWireless;
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210 | }
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211 |
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212 | int NetIfList(std::list <ComObjPtr<HostNetworkInterface> > &list)
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213 | {
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214 | int vrc = VINF_SUCCESS;
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215 | size_t cbNeeded;
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216 | char *pBuf, *pNext;
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217 | int aiMib[6];
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218 | unsigned short u16DefaultIface = 0; /* shut up gcc. */
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219 | bool fDefaultIfaceExistent = true;
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220 |
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221 | /* Get the index of the interface associated with default route. */
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222 | vrc = getDefaultIfaceIndex(&u16DefaultIface, PF_INET);
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223 | if (RT_FAILURE(vrc))
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224 | {
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225 | fDefaultIfaceExistent = false;
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226 | vrc = VINF_SUCCESS;
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227 | }
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228 |
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229 | aiMib[0] = CTL_NET;
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230 | aiMib[1] = PF_ROUTE;
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231 | aiMib[2] = 0;
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232 | aiMib[3] = 0; /* address family */
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233 | aiMib[4] = NET_RT_IFLIST;
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234 | aiMib[5] = 0;
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235 |
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236 | if (sysctl(aiMib, 6, NULL, &cbNeeded, NULL, 0) < 0)
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237 | {
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238 | Log(("NetIfList: Failed to get estimate for list size (errno=%d).\n", errno));
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239 | return RTErrConvertFromErrno(errno);
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240 | }
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241 | if ((pBuf = (char*)malloc(cbNeeded)) == NULL)
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242 | return VERR_NO_MEMORY;
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243 | if (sysctl(aiMib, 6, pBuf, &cbNeeded, NULL, 0) < 0)
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244 | {
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245 | free(pBuf);
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246 | Log(("NetIfList: Failed to retrieve interface table (errno=%d).\n", errno));
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247 | return RTErrConvertFromErrno(errno);
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248 | }
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249 |
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250 | int sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP);
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251 | if (sock < 0)
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252 | {
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253 | free(pBuf);
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254 | Log(("NetIfList: socket() -> %d\n", errno));
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255 | return RTErrConvertFromErrno(errno);
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256 | }
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257 |
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258 | char *pEnd = pBuf + cbNeeded;
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259 | for (pNext = pBuf; pNext < pEnd;)
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260 | {
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261 | struct if_msghdr *pIfMsg = (struct if_msghdr *)pNext;
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262 |
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263 | if (pIfMsg->ifm_type != RTM_IFINFO)
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264 | {
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265 | Log(("NetIfList: Got message %u while expecting %u.\n",
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266 | pIfMsg->ifm_type, RTM_IFINFO));
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267 | vrc = VERR_INTERNAL_ERROR;
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268 | break;
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269 | }
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270 | struct sockaddr_dl *pSdl = (struct sockaddr_dl *)(pIfMsg + 1);
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271 |
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272 | size_t cbNameLen = pSdl->sdl_nlen + 1;
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273 | PNETIFINFO pNew = (PNETIFINFO)RTMemAllocZ(RT_UOFFSETOF_DYN(NETIFINFO, szName[cbNameLen]));
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274 | if (!pNew)
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275 | {
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276 | vrc = VERR_NO_MEMORY;
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277 | break;
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278 | }
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279 | memcpy(pNew->MACAddress.au8, LLADDR(pSdl), sizeof(pNew->MACAddress.au8));
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280 | pNew->enmMediumType = NETIF_T_ETHERNET;
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281 | Assert(sizeof(pNew->szShortName) >= cbNameLen);
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282 | strlcpy(pNew->szShortName, pSdl->sdl_data, cbNameLen);
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283 | strlcpy(pNew->szName, pSdl->sdl_data, cbNameLen);
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284 | /* Generate UUID from name and MAC address. */
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285 | RTUUID uuid;
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286 | RTUuidClear(&uuid);
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287 | memcpy(&uuid, pNew->szShortName, RT_MIN(cbNameLen, sizeof(uuid)));
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288 | uuid.Gen.u8ClockSeqHiAndReserved = (uuid.Gen.u8ClockSeqHiAndReserved & 0x3f) | 0x80;
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289 | uuid.Gen.u16TimeHiAndVersion = (uuid.Gen.u16TimeHiAndVersion & 0x0fff) | 0x4000;
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290 | memcpy(uuid.Gen.au8Node, pNew->MACAddress.au8, sizeof(uuid.Gen.au8Node));
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291 | pNew->Uuid = uuid;
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292 |
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293 | pNext += pIfMsg->ifm_msglen;
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294 | while (pNext < pEnd)
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295 | {
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296 | struct ifa_msghdr *pIfAddrMsg = (struct ifa_msghdr *)pNext;
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297 |
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298 | if (pIfAddrMsg->ifam_type != RTM_NEWADDR)
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299 | break;
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300 | extractAddressesToNetInfo(pIfAddrMsg->ifam_addrs,
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301 | (char *)(pIfAddrMsg + 1),
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302 | pIfAddrMsg->ifam_msglen + (char *)pIfAddrMsg,
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303 | pNew);
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304 | pNext += pIfAddrMsg->ifam_msglen;
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305 | }
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306 |
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307 | if (pSdl->sdl_type == IFT_ETHER || pSdl->sdl_type == IFT_L2VLAN)
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308 | {
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309 | struct ifreq IfReq;
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310 | RTStrCopy(IfReq.ifr_name, sizeof(IfReq.ifr_name), pNew->szShortName);
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311 | if (ioctl(sock, SIOCGIFFLAGS, &IfReq) < 0)
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312 | {
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313 | Log(("NetIfList: ioctl(SIOCGIFFLAGS) -> %d\n", errno));
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314 | pNew->enmStatus = NETIF_S_UNKNOWN;
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315 | }
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316 | else
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317 | pNew->enmStatus = (IfReq.ifr_flags & IFF_UP) ? NETIF_S_UP : NETIF_S_DOWN;
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318 |
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319 | HostNetworkInterfaceType_T enmType;
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320 | if (strncmp(pNew->szName, RT_STR_TUPLE("vboxnet")))
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321 | enmType = HostNetworkInterfaceType_Bridged;
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322 | else
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323 | enmType = HostNetworkInterfaceType_HostOnly;
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324 |
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325 | pNew->fWireless = isWireless(pNew->szName);
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326 |
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327 | ComObjPtr<HostNetworkInterface> IfObj;
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328 | IfObj.createObject();
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329 | if (SUCCEEDED(IfObj->init(Bstr(pNew->szName), enmType, pNew)))
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330 | {
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331 | /* Make sure the default interface gets to the beginning. */
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332 | if ( fDefaultIfaceExistent
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333 | && pIfMsg->ifm_index == u16DefaultIface)
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334 | list.push_front(IfObj);
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335 | else
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336 | list.push_back(IfObj);
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337 | }
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338 | }
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339 | RTMemFree(pNew);
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340 | }
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341 |
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342 | close(sock);
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343 | free(pBuf);
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344 | return vrc;
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345 | }
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346 |
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347 | int NetIfGetConfigByName(PNETIFINFO pInfo)
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348 | {
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349 | int vrc = VINF_SUCCESS;
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350 | size_t cbNeeded;
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351 | char *pBuf, *pNext;
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352 | int aiMib[6];
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353 |
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354 | aiMib[0] = CTL_NET;
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355 | aiMib[1] = PF_ROUTE;
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356 | aiMib[2] = 0;
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357 | aiMib[3] = 0; /* address family */
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358 | aiMib[4] = NET_RT_IFLIST;
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359 | aiMib[5] = 0;
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360 |
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361 | if (sysctl(aiMib, 6, NULL, &cbNeeded, NULL, 0) < 0)
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362 | {
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363 | Log(("NetIfList: Failed to get estimate for list size (errno=%d).\n", errno));
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364 | return RTErrConvertFromErrno(errno);
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365 | }
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366 | if ((pBuf = (char*)malloc(cbNeeded)) == NULL)
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367 | return VERR_NO_MEMORY;
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368 | if (sysctl(aiMib, 6, pBuf, &cbNeeded, NULL, 0) < 0)
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369 | {
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370 | free(pBuf);
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371 | Log(("NetIfList: Failed to retrieve interface table (errno=%d).\n", errno));
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372 | return RTErrConvertFromErrno(errno);
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373 | }
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374 |
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375 | int sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP);
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376 | if (sock < 0)
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377 | {
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378 | free(pBuf);
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379 | Log(("NetIfList: socket() -> %d\n", errno));
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380 | return RTErrConvertFromErrno(errno);
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381 | }
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382 |
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383 | char *pEnd = pBuf + cbNeeded;
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384 | for (pNext = pBuf; pNext < pEnd;)
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385 | {
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386 | struct if_msghdr *pIfMsg = (struct if_msghdr *)pNext;
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387 |
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388 | if (pIfMsg->ifm_type != RTM_IFINFO)
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389 | {
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390 | Log(("NetIfList: Got message %u while expecting %u.\n",
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391 | pIfMsg->ifm_type, RTM_IFINFO));
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392 | vrc = VERR_INTERNAL_ERROR;
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393 | break;
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394 | }
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395 | struct sockaddr_dl *pSdl = (struct sockaddr_dl *)(pIfMsg + 1);
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396 |
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397 | bool fSkip = !!strcmp(pInfo->szShortName, pSdl->sdl_data);
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398 |
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399 | pNext += pIfMsg->ifm_msglen;
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400 | while (pNext < pEnd)
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401 | {
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402 | struct ifa_msghdr *pIfAddrMsg = (struct ifa_msghdr *)pNext;
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403 |
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404 | if (pIfAddrMsg->ifam_type != RTM_NEWADDR)
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405 | break;
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406 | if (!fSkip)
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407 | extractAddressesToNetInfo(pIfAddrMsg->ifam_addrs,
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408 | (char *)(pIfAddrMsg + 1),
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409 | pIfAddrMsg->ifam_msglen + (char *)pIfAddrMsg,
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410 | pInfo);
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411 | pNext += pIfAddrMsg->ifam_msglen;
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412 | }
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413 |
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414 | if (!fSkip && (pSdl->sdl_type == IFT_ETHER || pSdl->sdl_type == IFT_L2VLAN))
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415 | {
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416 | size_t cbNameLen = pSdl->sdl_nlen + 1;
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417 | memcpy(pInfo->MACAddress.au8, LLADDR(pSdl), sizeof(pInfo->MACAddress.au8));
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418 | pInfo->enmMediumType = NETIF_T_ETHERNET;
|
---|
419 | /* Generate UUID from name and MAC address. */
|
---|
420 | RTUUID uuid;
|
---|
421 | RTUuidClear(&uuid);
|
---|
422 | memcpy(&uuid, pInfo->szShortName, RT_MIN(cbNameLen, sizeof(uuid)));
|
---|
423 | uuid.Gen.u8ClockSeqHiAndReserved = (uuid.Gen.u8ClockSeqHiAndReserved & 0x3f) | 0x80;
|
---|
424 | uuid.Gen.u16TimeHiAndVersion = (uuid.Gen.u16TimeHiAndVersion & 0x0fff) | 0x4000;
|
---|
425 | memcpy(uuid.Gen.au8Node, pInfo->MACAddress.au8, sizeof(uuid.Gen.au8Node));
|
---|
426 | pInfo->Uuid = uuid;
|
---|
427 |
|
---|
428 | struct ifreq IfReq;
|
---|
429 | RTStrCopy(IfReq.ifr_name, sizeof(IfReq.ifr_name), pInfo->szShortName);
|
---|
430 | if (ioctl(sock, SIOCGIFFLAGS, &IfReq) < 0)
|
---|
431 | {
|
---|
432 | Log(("NetIfList: ioctl(SIOCGIFFLAGS) -> %d\n", errno));
|
---|
433 | pInfo->enmStatus = NETIF_S_UNKNOWN;
|
---|
434 | }
|
---|
435 | else
|
---|
436 | pInfo->enmStatus = (IfReq.ifr_flags & IFF_UP) ? NETIF_S_UP : NETIF_S_DOWN;
|
---|
437 |
|
---|
438 | return VINF_SUCCESS;
|
---|
439 | }
|
---|
440 | }
|
---|
441 | close(sock);
|
---|
442 | free(pBuf);
|
---|
443 | return vrc;
|
---|
444 | }
|
---|
445 |
|
---|
446 | /**
|
---|
447 | * Retrieve the physical link speed in megabits per second. If the interface is
|
---|
448 | * not up or otherwise unavailable the zero speed is returned.
|
---|
449 | *
|
---|
450 | * @returns VBox status code.
|
---|
451 | *
|
---|
452 | * @param pcszIfName Interface name.
|
---|
453 | * @param puMbits Where to store the link speed.
|
---|
454 | */
|
---|
455 | int NetIfGetLinkSpeed(const char * /*pcszIfName*/, uint32_t * /*puMbits*/)
|
---|
456 | {
|
---|
457 | return VERR_NOT_IMPLEMENTED;
|
---|
458 | }
|
---|