| 1 | /* $Id: VBoxNetAdpCtl.cpp 91770 2021-10-15 19:38:17Z vboxsync $ */
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| 2 | /** @file
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| 3 | * Apps - VBoxAdpCtl, Configuration tool for vboxnetX adapters.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2009-2020 Oracle Corporation
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| 8 | *
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| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 10 | * available from http://www.virtualbox.org. This file is free software;
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| 11 | * you can redistribute it and/or modify it under the terms of the GNU
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| 12 | * General Public License (GPL) as published by the Free Software
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| 13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 16 | */
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| 17 |
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| 18 |
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| 19 |
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| 20 | /*********************************************************************************************************************************
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| 21 | * Header Files *
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| 22 | *********************************************************************************************************************************/
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| 23 | #include <list>
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| 24 | #include <errno.h>
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| 25 | #include <getopt.h>
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| 26 | #include <stdio.h>
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| 27 | #include <stdarg.h>
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| 28 | #include <stdlib.h>
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| 29 | #include <string.h>
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| 30 | #include <unistd.h>
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| 31 | #include <sys/wait.h>
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| 32 | #include <sys/ioctl.h>
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| 33 | #include <sys/stat.h>
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| 34 | #include <fcntl.h>
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| 35 |
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| 36 | #include <iprt/err.h>
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| 37 | #include <iprt/initterm.h>
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| 38 | #include <iprt/message.h>
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| 39 | #include <iprt/net.h>
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| 40 | #include <iprt/string.h>
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| 41 | #include <iprt/uint128.h>
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| 42 |
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| 43 | #ifdef RT_OS_LINUX
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| 44 | # include <arpa/inet.h>
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| 45 | # include <net/if.h>
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| 46 | # include <linux/types.h>
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| 47 | /* Older versions of ethtool.h rely on these: */
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| 48 | typedef unsigned long long u64;
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| 49 | typedef __uint32_t u32;
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| 50 | typedef __uint16_t u16;
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| 51 | typedef __uint8_t u8;
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| 52 | # include <limits.h> /* for INT_MAX */
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| 53 | # include <linux/ethtool.h>
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| 54 | # include <linux/sockios.h>
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| 55 | #endif
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| 56 | #ifdef RT_OS_SOLARIS
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| 57 | # include <sys/ioccom.h>
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| 58 | #endif
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| 59 |
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| 60 | /** @todo Error codes must be moved to some header file */
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| 61 | #define ADPCTLERR_BAD_NAME 2
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| 62 | #define ADPCTLERR_NO_CTL_DEV 3
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| 63 | #define ADPCTLERR_IOCTL_FAILED 4
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| 64 | #define ADPCTLERR_SOCKET_FAILED 5
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| 65 |
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| 66 | /** @todo These are duplicates from src/VBox/HostDrivers/VBoxNetAdp/VBoxNetAdpInternal.h */
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| 67 | #define VBOXNETADP_CTL_DEV_NAME "/dev/vboxnetctl"
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| 68 | #define VBOXNETADP_MAX_INSTANCES 128
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| 69 | #define VBOXNETADP_NAME "vboxnet"
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| 70 | #define VBOXNETADP_MAX_NAME_LEN 32
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| 71 | #define VBOXNETADP_CTL_ADD _IOWR('v', 1, VBOXNETADPREQ)
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| 72 | #define VBOXNETADP_CTL_REMOVE _IOW('v', 2, VBOXNETADPREQ)
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| 73 | typedef struct VBoxNetAdpReq
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| 74 | {
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| 75 | char szName[VBOXNETADP_MAX_NAME_LEN];
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| 76 | } VBOXNETADPREQ;
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| 77 | typedef VBOXNETADPREQ *PVBOXNETADPREQ;
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| 78 |
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| 79 | #define VBOXADPCTL_IFCONFIG_PATH1 "/sbin/ifconfig"
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| 80 | #define VBOXADPCTL_IFCONFIG_PATH2 "/bin/ifconfig"
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| 81 |
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| 82 | bool verbose;
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| 83 | bool dry_run;
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| 84 |
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| 85 |
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| 86 | static int usage(void)
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| 87 | {
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| 88 | fprintf(stderr, "Usage: VBoxNetAdpCtl <adapter> <address> ([netmask <address>] | remove)\n");
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| 89 | fprintf(stderr, " | VBoxNetAdpCtl [<adapter>] add\n");
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| 90 | fprintf(stderr, " | VBoxNetAdpCtl <adapter> remove\n");
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| 91 | return EXIT_FAILURE;
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| 92 | }
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| 93 |
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| 94 |
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| 95 | /*
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| 96 | * A wrapper on standard list that provides '<<' operator for adding several list members in a single
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| 97 | * line dynamically. For example: "CmdList(arg1) << arg2 << arg3" produces a list with three members.
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| 98 | */
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| 99 | class CmdList
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| 100 | {
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| 101 | public:
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| 102 | /** Creates an empty list. */
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| 103 | CmdList() {};
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| 104 | /** Creates a list with a single member. */
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| 105 | CmdList(const char *pcszCommand) { m_list.push_back(pcszCommand); };
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| 106 | /** Provides access to the underlying standard list. */
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| 107 | const std::list<const char *>& getList(void) const { return m_list; };
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| 108 | /** Adds a member to the list. */
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| 109 | CmdList& operator<<(const char *pcszArgument);
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| 110 | private:
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| 111 | std::list<const char *>m_list;
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| 112 | };
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| 113 |
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| 114 | CmdList& CmdList::operator<<(const char *pcszArgument)
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| 115 | {
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| 116 | m_list.push_back(pcszArgument);
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| 117 | return *this;
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| 118 | }
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| 119 |
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| 120 | /** Simple helper to distinguish IPv4 and IPv6 addresses. */
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| 121 | inline bool isAddrV6(const char *pcszAddress)
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| 122 | {
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| 123 | return !!(strchr(pcszAddress, ':'));
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| 124 | }
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| 125 |
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| 126 |
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| 127 | /*********************************************************************************************************************************
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| 128 | * Generic address commands. *
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| 129 | *********************************************************************************************************************************/
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| 130 |
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| 131 | /**
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| 132 | * The base class for all address manipulation commands. While being an abstract class,
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| 133 | * it provides a generic implementation of 'set' and 'remove' methods, which rely on
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| 134 | * pure virtual methods like 'addV4' and 'removeV4' to perform actual command execution.
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| 135 | */
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| 136 | class AddressCommand
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| 137 | {
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| 138 | public:
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| 139 | AddressCommand() : m_pszPath(0) {};
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| 140 | virtual ~AddressCommand() {};
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| 141 |
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| 142 | /** returns true if underlying command (executable) is present in the system. */
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| 143 | bool isAvailable(void)
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| 144 | { struct stat s; return (!stat(m_pszPath, &s) && S_ISREG(s.st_mode)); };
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| 145 |
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| 146 | /*
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| 147 | * Someday we may want to support several IP addresses per adapter, but for now we
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| 148 | * have 'set' method only, which replaces all addresses with the one specifed.
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| 149 | *
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| 150 | * virtual int add(const char *pcszAdapter, const char *pcszAddress, const char *pcszNetmask = 0) = 0;
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| 151 | */
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| 152 | /** replace existing address(es) */
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| 153 | virtual int set(const char *pcszAdapter, const char *pcszAddress, const char *pcszNetmask = 0);
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| 154 | /** remove address */
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| 155 | virtual int remove(const char *pcszAdapter, const char *pcszAddress);
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| 156 | protected:
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| 157 | /** IPv4-specific handler used by generic implementation of 'set' method if 'setV4' is not supported. */
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| 158 | virtual int addV4(const char *pcszAdapter, const char *pcszAddress, const char *pcszNetmask = 0) = 0;
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| 159 | /** IPv6-specific handler used by generic implementation of 'set' method. */
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| 160 | virtual int addV6(const char *pcszAdapter, const char *pcszAddress, const char *pcszNetmask = 0) = 0;
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| 161 | /** IPv4-specific handler used by generic implementation of 'set' method. */
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| 162 | virtual int setV4(const char *pcszAdapter, const char *pcszAddress, const char *pcszNetmask = 0) = 0;
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| 163 | /** IPv4-specific handler used by generic implementation of 'remove' method. */
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| 164 | virtual int removeV4(const char *pcszAdapter, const char *pcszAddress) = 0;
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| 165 | /** IPv6-specific handler used by generic implementation of 'remove' method. */
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| 166 | virtual int removeV6(const char *pcszAdapter, const char *pcszAddress) = 0;
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| 167 | /** Composes the argument list of command that obtains all addresses assigned to the adapter. */
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| 168 | virtual CmdList getShowCommand(const char *pcszAdapter) const = 0;
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| 169 |
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| 170 | /** Prepares an array of C strings needed for 'exec' call. */
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| 171 | char * const * allocArgv(const CmdList& commandList);
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| 172 | /** Hides process creation details. To be used in derived classes. */
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| 173 | int execute(CmdList& commandList);
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| 174 |
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| 175 | /** A path to executable command. */
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| 176 | const char *m_pszPath;
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| 177 | private:
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| 178 | /** Removes all previously asssigned addresses of a particular protocol family. */
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| 179 | int removeAddresses(const char *pcszAdapter, const char *pcszFamily);
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| 180 | };
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| 181 |
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| 182 | /*
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| 183 | * A generic implementation of 'ifconfig' command for all platforms.
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| 184 | */
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| 185 | class CmdIfconfig : public AddressCommand
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| 186 | {
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| 187 | public:
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| 188 | CmdIfconfig()
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| 189 | {
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| 190 | struct stat s;
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| 191 | if ( !stat(VBOXADPCTL_IFCONFIG_PATH1, &s)
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| 192 | && S_ISREG(s.st_mode))
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| 193 | m_pszPath = (char*)VBOXADPCTL_IFCONFIG_PATH1;
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| 194 | else
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| 195 | m_pszPath = (char*)VBOXADPCTL_IFCONFIG_PATH2;
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| 196 | };
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| 197 |
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| 198 | protected:
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| 199 | /** Returns platform-specific subcommand to add an address. */
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| 200 | virtual const char *addCmdArg(void) const = 0;
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| 201 | /** Returns platform-specific subcommand to remove an address. */
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| 202 | virtual const char *delCmdArg(void) const = 0;
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| 203 | virtual CmdList getShowCommand(const char *pcszAdapter) const
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| 204 | { return CmdList(pcszAdapter); };
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| 205 | virtual int addV4(const char *pcszAdapter, const char *pcszAddress, const char *pcszNetmask = 0)
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| 206 | { return ENOTSUP; NOREF(pcszAdapter); NOREF(pcszAddress); NOREF(pcszNetmask); };
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| 207 | virtual int addV6(const char *pcszAdapter, const char *pcszAddress, const char *pcszNetmask = 0)
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| 208 | {
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| 209 | return execute(CmdList(pcszAdapter) << "inet6" << addCmdArg() << pcszAddress);
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| 210 | NOREF(pcszNetmask);
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| 211 | };
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| 212 | virtual int setV4(const char *pcszAdapter, const char *pcszAddress, const char *pcszNetmask = 0)
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| 213 | {
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| 214 | if (!pcszNetmask)
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| 215 | return execute(CmdList(pcszAdapter) << pcszAddress);
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| 216 | return execute(CmdList(pcszAdapter) << pcszAddress << "netmask" << pcszNetmask);
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| 217 | };
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| 218 | virtual int removeV4(const char *pcszAdapter, const char *pcszAddress)
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| 219 | { return execute(CmdList(pcszAdapter) << delCmdArg() << pcszAddress); };
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| 220 | virtual int removeV6(const char *pcszAdapter, const char *pcszAddress)
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| 221 | { return execute(CmdList(pcszAdapter) << "inet6" << delCmdArg() << pcszAddress); };
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| 222 | };
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| 223 |
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| 224 |
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| 225 | /*********************************************************************************************************************************
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| 226 | * Platform-specific commands *
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| 227 | *********************************************************************************************************************************/
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| 228 |
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| 229 | class CmdIfconfigLinux : public CmdIfconfig
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| 230 | {
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| 231 | protected:
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| 232 | virtual int removeV4(const char *pcszAdapter, const char *pcszAddress)
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| 233 | { return execute(CmdList(pcszAdapter) << "0.0.0.0"); NOREF(pcszAddress); };
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| 234 | virtual const char *addCmdArg(void) const { return "add"; };
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| 235 | virtual const char *delCmdArg(void) const { return "del"; };
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| 236 | };
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| 237 |
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| 238 | class CmdIfconfigDarwin : public CmdIfconfig
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| 239 | {
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| 240 | protected:
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| 241 | virtual const char *addCmdArg(void) const { return "add"; };
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| 242 | virtual const char *delCmdArg(void) const { return "delete"; };
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| 243 | };
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| 244 |
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| 245 | class CmdIfconfigSolaris : public CmdIfconfig
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| 246 | {
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| 247 | public:
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| 248 | virtual int set(const char *pcszAdapter, const char *pcszAddress, const char *pcszNetmask = 0)
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| 249 | {
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| 250 | const char *pcszFamily = isAddrV6(pcszAddress) ? "inet6" : "inet";
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| 251 | int status;
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| 252 |
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| 253 | status = execute(CmdList(pcszAdapter) << pcszFamily);
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| 254 | if (status != EXIT_SUCCESS)
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| 255 | status = execute(CmdList(pcszAdapter) << pcszFamily << "plumb" << "up");
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| 256 | if (status != EXIT_SUCCESS)
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| 257 | return status;
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| 258 |
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| 259 | return CmdIfconfig::set(pcszAdapter, pcszAddress, pcszNetmask);
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| 260 | };
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| 261 | protected:
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| 262 | /* We can umplumb IPv4 interfaces only! */
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| 263 | virtual int removeV4(const char *pcszAdapter, const char *pcszAddress)
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| 264 | {
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| 265 | int rc = CmdIfconfig::removeV4(pcszAdapter, pcszAddress);
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| 266 |
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| 267 | /** @todo Do we really need to unplumb inet here? */
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| 268 | execute(CmdList(pcszAdapter) << "inet" << "unplumb");
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| 269 | return rc;
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| 270 | };
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| 271 | virtual const char *addCmdArg(void) const { return "addif"; };
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| 272 | virtual const char *delCmdArg(void) const { return "removeif"; };
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| 273 | };
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| 274 |
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| 275 |
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| 276 | #ifdef RT_OS_LINUX
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| 277 | /*
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| 278 | * Helper class to incapsulate IPv4 address conversion.
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| 279 | */
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| 280 | class AddressIPv4
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| 281 | {
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| 282 | public:
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| 283 | AddressIPv4(const char *pcszAddress, const char *pcszNetmask = 0)
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| 284 | {
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| 285 | if (pcszNetmask)
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| 286 | m_Prefix = maskToPrefix(pcszNetmask);
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| 287 | else
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| 288 | {
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| 289 | /*
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| 290 | * Since guessing network mask is probably futile we simply use 24,
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| 291 | * as it matches our defaults. When non-default values are used
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| 292 | * providing a proper netmask is up to the user.
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| 293 | */
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| 294 | m_Prefix = 24;
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| 295 | }
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| 296 | inet_pton(AF_INET, pcszAddress, &(m_Address.sin_addr));
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| 297 | snprintf(m_szAddressAndMask, sizeof(m_szAddressAndMask), "%s/%d", pcszAddress, m_Prefix);
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| 298 | m_Broadcast.sin_addr.s_addr = computeBroadcast(m_Address.sin_addr.s_addr, m_Prefix);
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| 299 | inet_ntop(AF_INET, &(m_Broadcast.sin_addr), m_szBroadcast, sizeof(m_szBroadcast));
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| 300 | }
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| 301 | const char *getBroadcast() const { return m_szBroadcast; };
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| 302 | const char *getAddressAndMask() const { return m_szAddressAndMask; };
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| 303 | private:
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| 304 | unsigned int maskToPrefix(const char *pcszNetmask);
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| 305 | unsigned long computeBroadcast(unsigned long ulAddress, unsigned int uPrefix);
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| 306 |
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| 307 | unsigned int m_Prefix;
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| 308 | struct sockaddr_in m_Address;
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| 309 | struct sockaddr_in m_Broadcast;
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| 310 | char m_szAddressAndMask[INET_ADDRSTRLEN + 3]; /* e.g. 192.168.56.101/24 */
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| 311 | char m_szBroadcast[INET_ADDRSTRLEN];
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| 312 | };
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| 313 |
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| 314 | unsigned int AddressIPv4::maskToPrefix(const char *pcszNetmask)
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| 315 | {
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| 316 | unsigned cBits = 0;
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| 317 | unsigned m[4];
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| 318 |
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| 319 | if (sscanf(pcszNetmask, "%u.%u.%u.%u", &m[0], &m[1], &m[2], &m[3]) == 4)
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| 320 | {
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| 321 | for (int i = 0; i < 4 && m[i]; ++i)
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| 322 | {
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| 323 | int mask = m[i];
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| 324 | while (mask & 0x80)
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| 325 | {
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| 326 | cBits++;
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| 327 | mask <<= 1;
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| 328 | }
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| 329 | }
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| 330 | }
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| 331 | return cBits;
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| 332 | }
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| 333 |
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| 334 | unsigned long AddressIPv4::computeBroadcast(unsigned long ulAddress, unsigned int uPrefix)
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| 335 | {
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| 336 | /* Note: the address is big-endian. */
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| 337 | unsigned long ulNetworkMask = (1l << uPrefix) - 1;
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| 338 | return (ulAddress & ulNetworkMask) | ~ulNetworkMask;
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| 339 | }
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| 340 |
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| 341 |
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| 342 | /*
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| 343 | * Linux-specific implementation of 'ip' command, as other platforms do not support it.
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| 344 | */
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| 345 | class CmdIpLinux : public AddressCommand
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| 346 | {
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| 347 | public:
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| 348 | CmdIpLinux() { m_pszPath = "/sbin/ip"; };
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| 349 | /**
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| 350 | * IPv4 and IPv6 syntax is the same, so we override `remove` instead of implementing
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| 351 | * family-specific commands. It would be easier to use the same body in both
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| 352 | * 'removeV4' and 'removeV6', so we override 'remove' to illustrate how to do common
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| 353 | * implementation.
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| 354 | */
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| 355 | virtual int remove(const char *pcszAdapter, const char *pcszAddress)
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| 356 | { return execute(CmdList("addr") << "del" << pcszAddress << "dev" << pcszAdapter); };
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| 357 | protected:
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| 358 | virtual int addV4(const char *pcszAdapter, const char *pcszAddress, const char *pcszNetmask = 0)
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| 359 | {
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| 360 | AddressIPv4 addr(pcszAddress, pcszNetmask);
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| 361 | bringUp(pcszAdapter);
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| 362 | return execute(CmdList("addr") << "add" << addr.getAddressAndMask() <<
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| 363 | "broadcast" << addr.getBroadcast() << "dev" << pcszAdapter);
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| 364 | };
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| 365 | virtual int addV6(const char *pcszAdapter, const char *pcszAddress, const char *pcszNetmask = 0)
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| 366 | {
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| 367 | bringUp(pcszAdapter);
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| 368 | return execute(CmdList("addr") << "add" << pcszAddress << "dev" << pcszAdapter);
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| 369 | NOREF(pcszNetmask);
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| 370 | };
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| 371 | /**
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| 372 | * Our command does not support 'replacing' addresses. Reporting this fact to generic implementation
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| 373 | * of 'set' causes it to remove all assigned addresses, then 'add' the new one.
|
|---|
| 374 | */
|
|---|
| 375 | virtual int setV4(const char *pcszAdapter, const char *pcszAddress, const char *pcszNetmask = 0)
|
|---|
| 376 | { return ENOTSUP; NOREF(pcszAdapter); NOREF(pcszAddress); NOREF(pcszNetmask); };
|
|---|
| 377 | /** We use family-agnostic command syntax. See 'remove' above. */
|
|---|
| 378 | virtual int removeV4(const char *pcszAdapter, const char *pcszAddress)
|
|---|
| 379 | { return ENOTSUP; NOREF(pcszAdapter); NOREF(pcszAddress); };
|
|---|
| 380 | /** We use family-agnostic command syntax. See 'remove' above. */
|
|---|
| 381 | virtual int removeV6(const char *pcszAdapter, const char *pcszAddress)
|
|---|
| 382 | { return ENOTSUP; NOREF(pcszAdapter); NOREF(pcszAddress); };
|
|---|
| 383 | virtual CmdList getShowCommand(const char *pcszAdapter) const
|
|---|
| 384 | { return CmdList("addr") << "show" << "dev" << pcszAdapter; };
|
|---|
| 385 | private:
|
|---|
| 386 | /** Brings up the adapter */
|
|---|
| 387 | void bringUp(const char *pcszAdapter)
|
|---|
| 388 | { execute(CmdList("link") << "set" << "dev" << pcszAdapter << "up"); };
|
|---|
| 389 | };
|
|---|
| 390 | #endif /* RT_OS_LINUX */
|
|---|
| 391 |
|
|---|
| 392 |
|
|---|
| 393 | /*********************************************************************************************************************************
|
|---|
| 394 | * Generic address command implementations *
|
|---|
| 395 | *********************************************************************************************************************************/
|
|---|
| 396 |
|
|---|
| 397 | int AddressCommand::set(const char *pcszAdapter, const char *pcszAddress, const char *pcszNetmask)
|
|---|
| 398 | {
|
|---|
| 399 | if (isAddrV6(pcszAddress))
|
|---|
| 400 | {
|
|---|
| 401 | removeAddresses(pcszAdapter, "inet6");
|
|---|
| 402 | return addV6(pcszAdapter, pcszAddress, pcszNetmask);
|
|---|
| 403 | }
|
|---|
| 404 | int rc = setV4(pcszAdapter, pcszAddress, pcszNetmask);
|
|---|
| 405 | if (rc == ENOTSUP)
|
|---|
| 406 | {
|
|---|
| 407 | removeAddresses(pcszAdapter, "inet");
|
|---|
| 408 | rc = addV4(pcszAdapter, pcszAddress, pcszNetmask);
|
|---|
| 409 | }
|
|---|
| 410 | return rc;
|
|---|
| 411 | }
|
|---|
| 412 |
|
|---|
| 413 | int AddressCommand::remove(const char *pcszAdapter, const char *pcszAddress)
|
|---|
| 414 | {
|
|---|
| 415 | if (isAddrV6(pcszAddress))
|
|---|
| 416 | return removeV6(pcszAdapter, pcszAddress);
|
|---|
| 417 | return removeV4(pcszAdapter, pcszAddress);
|
|---|
| 418 | }
|
|---|
| 419 |
|
|---|
| 420 | /*
|
|---|
| 421 | * Allocate an array of exec arguments. In addition to arguments provided
|
|---|
| 422 | * we need to include the full path to the executable as well as "terminating"
|
|---|
| 423 | * null pointer marking the end of the array.
|
|---|
| 424 | */
|
|---|
| 425 | char * const * AddressCommand::allocArgv(const CmdList& list)
|
|---|
| 426 | {
|
|---|
| 427 | int i = 0;
|
|---|
| 428 | std::list<const char *>::const_iterator it;
|
|---|
| 429 | const char **argv = (const char **)calloc(list.getList().size() + 2, sizeof(const char *));
|
|---|
| 430 | if (argv)
|
|---|
| 431 | {
|
|---|
| 432 | argv[i++] = m_pszPath;
|
|---|
| 433 | for (it = list.getList().begin(); it != list.getList().end(); ++it)
|
|---|
| 434 | argv[i++] = *it;
|
|---|
| 435 | argv[i++] = NULL;
|
|---|
| 436 | }
|
|---|
| 437 | return (char * const*)argv;
|
|---|
| 438 | }
|
|---|
| 439 |
|
|---|
| 440 | int AddressCommand::execute(CmdList& list)
|
|---|
| 441 | {
|
|---|
| 442 | char * const pEnv[] = { (char*)"LC_ALL=C", NULL };
|
|---|
| 443 | char * const* argv = allocArgv(list);
|
|---|
| 444 | if (argv == NULL)
|
|---|
| 445 | return EXIT_FAILURE;
|
|---|
| 446 |
|
|---|
| 447 | if (verbose)
|
|---|
| 448 | {
|
|---|
| 449 | const char *sep = "";
|
|---|
| 450 | for (const char * const *pArg = argv; *pArg != NULL; ++pArg)
|
|---|
| 451 | {
|
|---|
| 452 | printf("%s%s", sep, *pArg);
|
|---|
| 453 | sep = " ";
|
|---|
| 454 | }
|
|---|
| 455 | printf("\n");
|
|---|
| 456 | }
|
|---|
| 457 | if (dry_run)
|
|---|
| 458 | return EXIT_SUCCESS;
|
|---|
| 459 |
|
|---|
| 460 | int rc = EXIT_FAILURE; /* o/~ hope for the best, expect the worst */
|
|---|
| 461 | pid_t childPid = fork();
|
|---|
| 462 | switch (childPid)
|
|---|
| 463 | {
|
|---|
| 464 | case -1: /* Something went wrong. */
|
|---|
| 465 | perror("fork");
|
|---|
| 466 | break;
|
|---|
| 467 |
|
|---|
| 468 | case 0: /* Child process. */
|
|---|
| 469 | if (execve(argv[0], argv, pEnv) == -1)
|
|---|
| 470 | {
|
|---|
| 471 | perror("execve");
|
|---|
| 472 | exit(EXIT_FAILURE);
|
|---|
| 473 | /* NOTREACHED */
|
|---|
| 474 | }
|
|---|
| 475 | break;
|
|---|
| 476 |
|
|---|
| 477 | default: /* Parent process. */
|
|---|
| 478 | {
|
|---|
| 479 | int status;
|
|---|
| 480 | pid_t waited = waitpid(childPid, &status, 0);
|
|---|
| 481 | if (waited == childPid) /* likely*/
|
|---|
| 482 | {
|
|---|
| 483 | if (WIFEXITED(status) && WEXITSTATUS(status) == EXIT_SUCCESS)
|
|---|
| 484 | rc = EXIT_SUCCESS;
|
|---|
| 485 | }
|
|---|
| 486 | else if (waited == (pid_t)-1)
|
|---|
| 487 | {
|
|---|
| 488 | perror("waitpid");
|
|---|
| 489 | }
|
|---|
| 490 | else
|
|---|
| 491 | {
|
|---|
| 492 | /* should never happen */
|
|---|
| 493 | fprintf(stderr, "waitpid: unexpected pid %lld\n",
|
|---|
| 494 | (long long int)waited);
|
|---|
| 495 | }
|
|---|
| 496 | break;
|
|---|
| 497 | }
|
|---|
| 498 | }
|
|---|
| 499 |
|
|---|
| 500 | free((void*)argv);
|
|---|
| 501 | return rc;
|
|---|
| 502 | }
|
|---|
| 503 |
|
|---|
| 504 | #define MAX_ADDRESSES 128
|
|---|
| 505 | #define MAX_ADDRLEN 64
|
|---|
| 506 |
|
|---|
| 507 | int AddressCommand::removeAddresses(const char *pcszAdapter, const char *pcszFamily)
|
|---|
| 508 | {
|
|---|
| 509 | char szBuf[1024];
|
|---|
| 510 | char aszAddresses[MAX_ADDRESSES][MAX_ADDRLEN];
|
|---|
| 511 | int rc = EXIT_SUCCESS;
|
|---|
| 512 | int fds[2];
|
|---|
| 513 | char * const * argv = allocArgv(getShowCommand(pcszAdapter));
|
|---|
| 514 | char * const envp[] = { (char*)"LC_ALL=C", NULL };
|
|---|
| 515 |
|
|---|
| 516 | memset(aszAddresses, 0, sizeof(aszAddresses));
|
|---|
| 517 |
|
|---|
| 518 | rc = pipe(fds);
|
|---|
| 519 | if (rc < 0)
|
|---|
| 520 | return errno;
|
|---|
| 521 |
|
|---|
| 522 | pid_t pid = fork();
|
|---|
| 523 | if (pid < 0)
|
|---|
| 524 | return errno;
|
|---|
| 525 |
|
|---|
| 526 | if (pid == 0)
|
|---|
| 527 | {
|
|---|
| 528 | /* child */
|
|---|
| 529 | close(fds[0]);
|
|---|
| 530 | close(STDOUT_FILENO);
|
|---|
| 531 | rc = dup2(fds[1], STDOUT_FILENO);
|
|---|
| 532 | if (rc >= 0)
|
|---|
| 533 | if (execve(argv[0], argv, envp) == -1)
|
|---|
| 534 | return errno;
|
|---|
| 535 | return rc;
|
|---|
| 536 | }
|
|---|
| 537 |
|
|---|
| 538 | /* parent */
|
|---|
| 539 | close(fds[1]);
|
|---|
| 540 | FILE *fp = fdopen(fds[0], "r");
|
|---|
| 541 | if (!fp)
|
|---|
| 542 | return false;
|
|---|
| 543 |
|
|---|
| 544 | int cAddrs;
|
|---|
| 545 | for (cAddrs = 0; cAddrs < MAX_ADDRESSES && fgets(szBuf, sizeof(szBuf), fp);)
|
|---|
| 546 | {
|
|---|
| 547 | int cbSkipWS = strspn(szBuf, " \t");
|
|---|
| 548 | char *pszWord = strtok(szBuf + cbSkipWS, " ");
|
|---|
| 549 | /* We are concerned with particular family address lines only. */
|
|---|
| 550 | if (!pszWord || strcmp(pszWord, pcszFamily))
|
|---|
| 551 | continue;
|
|---|
| 552 |
|
|---|
| 553 | pszWord = strtok(NULL, " ");
|
|---|
| 554 |
|
|---|
| 555 | /* Skip "addr:" word if present. */
|
|---|
| 556 | if (pszWord && !strcmp(pszWord, "addr:"))
|
|---|
| 557 | pszWord = strtok(NULL, " ");
|
|---|
| 558 |
|
|---|
| 559 | /* Skip link-local address lines. */
|
|---|
| 560 | if (!pszWord || !strncmp(pszWord, "fe80", 4))
|
|---|
| 561 | continue;
|
|---|
| 562 | strncpy(aszAddresses[cAddrs++], pszWord, MAX_ADDRLEN-1);
|
|---|
| 563 | }
|
|---|
| 564 | fclose(fp);
|
|---|
| 565 |
|
|---|
| 566 | for (int i = 0; i < cAddrs && rc == EXIT_SUCCESS; i++)
|
|---|
| 567 | rc = remove(pcszAdapter, aszAddresses[i]);
|
|---|
| 568 |
|
|---|
| 569 | return rc;
|
|---|
| 570 | }
|
|---|
| 571 |
|
|---|
| 572 |
|
|---|
| 573 | /*********************************************************************************************************************************
|
|---|
| 574 | * Adapter creation/removal implementations *
|
|---|
| 575 | *********************************************************************************************************************************/
|
|---|
| 576 |
|
|---|
| 577 | /*
|
|---|
| 578 | * A generic implementation of adapter creation/removal ioctl calls.
|
|---|
| 579 | */
|
|---|
| 580 | class Adapter
|
|---|
| 581 | {
|
|---|
| 582 | public:
|
|---|
| 583 | int add(char *pszNameInOut);
|
|---|
| 584 | int remove(const char *pcszName);
|
|---|
| 585 | int checkName(const char *pcszNameIn, char *pszNameOut, size_t cbNameOut);
|
|---|
| 586 | protected:
|
|---|
| 587 | virtual int doIOCtl(unsigned long iCmd, VBOXNETADPREQ *pReq);
|
|---|
| 588 | };
|
|---|
| 589 |
|
|---|
| 590 | /*
|
|---|
| 591 | * Solaris does not support dynamic creation/removal of adapters.
|
|---|
| 592 | */
|
|---|
| 593 | class AdapterSolaris : public Adapter
|
|---|
| 594 | {
|
|---|
| 595 | protected:
|
|---|
| 596 | virtual int doIOCtl(unsigned long iCmd, VBOXNETADPREQ *pReq)
|
|---|
| 597 | { return 1 /*ENOTSUP*/; NOREF(iCmd); NOREF(pReq); };
|
|---|
| 598 | };
|
|---|
| 599 |
|
|---|
| 600 | #if defined(RT_OS_LINUX)
|
|---|
| 601 | /*
|
|---|
| 602 | * Linux implementation provides a 'workaround' to obtain adapter speed.
|
|---|
| 603 | */
|
|---|
| 604 | class AdapterLinux : public Adapter
|
|---|
| 605 | {
|
|---|
| 606 | public:
|
|---|
| 607 | int getSpeed(const char *pszName, unsigned *puSpeed);
|
|---|
| 608 | };
|
|---|
| 609 |
|
|---|
| 610 | int AdapterLinux::getSpeed(const char *pszName, unsigned *puSpeed)
|
|---|
| 611 | {
|
|---|
| 612 | struct ifreq IfReq;
|
|---|
| 613 | struct ethtool_value EthToolVal;
|
|---|
| 614 | struct ethtool_cmd EthToolReq;
|
|---|
| 615 | int fd = socket(AF_INET, SOCK_DGRAM, 0);
|
|---|
| 616 | if (fd < 0)
|
|---|
| 617 | {
|
|---|
| 618 | fprintf(stderr, "VBoxNetAdpCtl: Error while retrieving link "
|
|---|
| 619 | "speed for %s: ", pszName);
|
|---|
| 620 | perror("VBoxNetAdpCtl: failed to open control socket");
|
|---|
| 621 | return ADPCTLERR_SOCKET_FAILED;
|
|---|
| 622 | }
|
|---|
| 623 | /* Get link status first. */
|
|---|
| 624 | memset(&EthToolVal, 0, sizeof(EthToolVal));
|
|---|
| 625 | memset(&IfReq, 0, sizeof(IfReq));
|
|---|
| 626 | snprintf(IfReq.ifr_name, sizeof(IfReq.ifr_name), "%s", pszName);
|
|---|
| 627 |
|
|---|
| 628 | EthToolVal.cmd = ETHTOOL_GLINK;
|
|---|
| 629 | IfReq.ifr_data = (caddr_t)&EthToolVal;
|
|---|
| 630 | int rc = ioctl(fd, SIOCETHTOOL, &IfReq);
|
|---|
| 631 | if (rc == 0)
|
|---|
| 632 | {
|
|---|
| 633 | if (EthToolVal.data)
|
|---|
| 634 | {
|
|---|
| 635 | memset(&IfReq, 0, sizeof(IfReq));
|
|---|
| 636 | snprintf(IfReq.ifr_name, sizeof(IfReq.ifr_name), "%s", pszName);
|
|---|
| 637 | EthToolReq.cmd = ETHTOOL_GSET;
|
|---|
| 638 | IfReq.ifr_data = (caddr_t)&EthToolReq;
|
|---|
| 639 | rc = ioctl(fd, SIOCETHTOOL, &IfReq);
|
|---|
| 640 | if (rc == 0)
|
|---|
| 641 | {
|
|---|
| 642 | *puSpeed = EthToolReq.speed;
|
|---|
| 643 | }
|
|---|
| 644 | else
|
|---|
| 645 | {
|
|---|
| 646 | fprintf(stderr, "VBoxNetAdpCtl: Error while retrieving link "
|
|---|
| 647 | "speed for %s: ", pszName);
|
|---|
| 648 | perror("VBoxNetAdpCtl: ioctl failed");
|
|---|
| 649 | rc = ADPCTLERR_IOCTL_FAILED;
|
|---|
| 650 | }
|
|---|
| 651 | }
|
|---|
| 652 | else
|
|---|
| 653 | *puSpeed = 0;
|
|---|
| 654 | }
|
|---|
| 655 | else
|
|---|
| 656 | {
|
|---|
| 657 | fprintf(stderr, "VBoxNetAdpCtl: Error while retrieving link "
|
|---|
| 658 | "status for %s: ", pszName);
|
|---|
| 659 | perror("VBoxNetAdpCtl: ioctl failed");
|
|---|
| 660 | rc = ADPCTLERR_IOCTL_FAILED;
|
|---|
| 661 | }
|
|---|
| 662 |
|
|---|
| 663 | close(fd);
|
|---|
| 664 | return rc;
|
|---|
| 665 | }
|
|---|
| 666 | #endif /* defined(RT_OS_LINUX) */
|
|---|
| 667 |
|
|---|
| 668 | int Adapter::add(char *pszName /* in/out */)
|
|---|
| 669 | {
|
|---|
| 670 | VBOXNETADPREQ Req;
|
|---|
| 671 | memset(&Req, '\0', sizeof(Req));
|
|---|
| 672 | snprintf(Req.szName, sizeof(Req.szName), "%s", pszName);
|
|---|
| 673 | int rc = doIOCtl(VBOXNETADP_CTL_ADD, &Req);
|
|---|
| 674 | if (rc == 0)
|
|---|
| 675 | strncpy(pszName, Req.szName, VBOXNETADP_MAX_NAME_LEN);
|
|---|
| 676 | return rc;
|
|---|
| 677 | }
|
|---|
| 678 |
|
|---|
| 679 | int Adapter::remove(const char *pcszName)
|
|---|
| 680 | {
|
|---|
| 681 | VBOXNETADPREQ Req;
|
|---|
| 682 | memset(&Req, '\0', sizeof(Req));
|
|---|
| 683 | snprintf(Req.szName, sizeof(Req.szName), "%s", pcszName);
|
|---|
| 684 | return doIOCtl(VBOXNETADP_CTL_REMOVE, &Req);
|
|---|
| 685 | }
|
|---|
| 686 |
|
|---|
| 687 | int Adapter::checkName(const char *pcszNameIn, char *pszNameOut, size_t cbNameOut)
|
|---|
| 688 | {
|
|---|
| 689 | int iAdapterIndex = -1;
|
|---|
| 690 |
|
|---|
| 691 | if ( strlen(pcszNameIn) >= VBOXNETADP_MAX_NAME_LEN
|
|---|
| 692 | || sscanf(pcszNameIn, "vboxnet%d", &iAdapterIndex) != 1
|
|---|
| 693 | || iAdapterIndex < 0 || iAdapterIndex >= VBOXNETADP_MAX_INSTANCES )
|
|---|
| 694 | {
|
|---|
| 695 | fprintf(stderr, "VBoxNetAdpCtl: Setting configuration for '%s' is not supported.\n", pcszNameIn);
|
|---|
| 696 | return ADPCTLERR_BAD_NAME;
|
|---|
| 697 | }
|
|---|
| 698 | snprintf(pszNameOut, cbNameOut, "vboxnet%d", iAdapterIndex);
|
|---|
| 699 | if (strcmp(pszNameOut, pcszNameIn))
|
|---|
| 700 | {
|
|---|
| 701 | fprintf(stderr, "VBoxNetAdpCtl: Invalid adapter name '%s'.\n", pcszNameIn);
|
|---|
| 702 | return ADPCTLERR_BAD_NAME;
|
|---|
| 703 | }
|
|---|
| 704 |
|
|---|
| 705 | return 0;
|
|---|
| 706 | }
|
|---|
| 707 |
|
|---|
| 708 | int Adapter::doIOCtl(unsigned long iCmd, VBOXNETADPREQ *pReq)
|
|---|
| 709 | {
|
|---|
| 710 | int fd = open(VBOXNETADP_CTL_DEV_NAME, O_RDWR);
|
|---|
| 711 | if (fd == -1)
|
|---|
| 712 | {
|
|---|
| 713 | fprintf(stderr, "VBoxNetAdpCtl: Error while %s %s: ",
|
|---|
| 714 | iCmd == VBOXNETADP_CTL_REMOVE ? "removing" : "adding",
|
|---|
| 715 | pReq->szName[0] ? pReq->szName : "new interface");
|
|---|
| 716 | perror("failed to open " VBOXNETADP_CTL_DEV_NAME);
|
|---|
| 717 | return ADPCTLERR_NO_CTL_DEV;
|
|---|
| 718 | }
|
|---|
| 719 |
|
|---|
| 720 | int rc = ioctl(fd, iCmd, pReq);
|
|---|
| 721 | if (rc == -1)
|
|---|
| 722 | {
|
|---|
| 723 | fprintf(stderr, "VBoxNetAdpCtl: Error while %s %s: ",
|
|---|
| 724 | iCmd == VBOXNETADP_CTL_REMOVE ? "removing" : "adding",
|
|---|
| 725 | pReq->szName[0] ? pReq->szName : "new interface");
|
|---|
| 726 | perror("VBoxNetAdpCtl: ioctl failed for " VBOXNETADP_CTL_DEV_NAME);
|
|---|
| 727 | rc = ADPCTLERR_IOCTL_FAILED;
|
|---|
| 728 | }
|
|---|
| 729 |
|
|---|
| 730 | close(fd);
|
|---|
| 731 |
|
|---|
| 732 | return rc;
|
|---|
| 733 | }
|
|---|
| 734 |
|
|---|
| 735 |
|
|---|
| 736 | /*********************************************************************************************************************************
|
|---|
| 737 | * Global config file implementation *
|
|---|
| 738 | *********************************************************************************************************************************/
|
|---|
| 739 |
|
|---|
| 740 | #define VBOX_GLOBAL_NETWORK_CONFIG_PATH "/etc/vbox/networks.conf"
|
|---|
| 741 | #define VBOXNET_DEFAULT_IPV4MASK "255.255.255.0"
|
|---|
| 742 |
|
|---|
| 743 | class NetworkAddress
|
|---|
| 744 | {
|
|---|
| 745 | public:
|
|---|
| 746 | bool isValidString(const char *pcszNetwork);
|
|---|
| 747 | bool isValid() { return m_fValid; };
|
|---|
| 748 | virtual bool matches(const char *pcszNetwork) = 0;
|
|---|
| 749 | virtual const char *defaultNetwork() = 0;
|
|---|
| 750 | protected:
|
|---|
| 751 | bool m_fValid;
|
|---|
| 752 |
|
|---|
| 753 | int RTNetStrToIPv4CidrWithZeroPrefixAllowed(const char *pcszAddr, PRTNETADDRIPV4 pAddr, int *piPrefix);
|
|---|
| 754 | int RTNetStrToIPv6CidrWithZeroPrefixAllowed(const char *pcszAddr, PRTNETADDRIPV6 pAddr, int *piPrefix);
|
|---|
| 755 | };
|
|---|
| 756 |
|
|---|
| 757 | int NetworkAddress::RTNetStrToIPv4CidrWithZeroPrefixAllowed(const char *pcszAddr, PRTNETADDRIPV4 pAddr, int *piPrefix)
|
|---|
| 758 | {
|
|---|
| 759 | RTNETADDRIPV4 addr;
|
|---|
| 760 | char *pszNext;
|
|---|
| 761 |
|
|---|
| 762 | AssertPtrReturn(pcszAddr, VERR_INVALID_PARAMETER);
|
|---|
| 763 | AssertPtrReturn(pAddr, VERR_INVALID_PARAMETER);
|
|---|
| 764 | AssertPtrReturn(piPrefix, VERR_INVALID_PARAMETER);
|
|---|
| 765 |
|
|---|
| 766 | pcszAddr = RTStrStripL(pcszAddr);
|
|---|
| 767 | int rc = RTNetStrToIPv4AddrEx(pcszAddr, &addr, &pszNext);
|
|---|
| 768 | if (RT_FAILURE(rc))
|
|---|
| 769 | return rc;
|
|---|
| 770 |
|
|---|
| 771 | /*
|
|---|
| 772 | * If the prefix is missing, treat is as exact (/32) address
|
|---|
| 773 | * specification.
|
|---|
| 774 | */
|
|---|
| 775 | if (*pszNext == '\0' || rc == VWRN_TRAILING_SPACES)
|
|---|
| 776 | {
|
|---|
| 777 | *pAddr = addr;
|
|---|
| 778 | *piPrefix = 32;
|
|---|
| 779 | return VINF_SUCCESS;
|
|---|
| 780 | }
|
|---|
| 781 |
|
|---|
| 782 | if (*pszNext == '/')
|
|---|
| 783 | ++pszNext;
|
|---|
| 784 | else
|
|---|
| 785 | return VERR_INVALID_PARAMETER;
|
|---|
| 786 |
|
|---|
| 787 | uint32_t prefix;
|
|---|
| 788 | rc = RTStrToUInt32Ex(pszNext, &pszNext, 0, &prefix);
|
|---|
| 789 | if ((rc == VINF_SUCCESS || rc == VWRN_TRAILING_SPACES) && prefix == 0)
|
|---|
| 790 | {
|
|---|
| 791 | *pAddr = addr;
|
|---|
| 792 | *piPrefix = 0;
|
|---|
| 793 | return VINF_SUCCESS;
|
|---|
| 794 | }
|
|---|
| 795 | return RTNetStrToIPv4Cidr(pcszAddr, pAddr, piPrefix);
|
|---|
| 796 | }
|
|---|
| 797 |
|
|---|
| 798 | int NetworkAddress::RTNetStrToIPv6CidrWithZeroPrefixAllowed(const char *pcszAddr, PRTNETADDRIPV6 pAddr, int *piPrefix)
|
|---|
| 799 | {
|
|---|
| 800 | RTNETADDRIPV6 Addr;
|
|---|
| 801 | uint8_t u8Prefix;
|
|---|
| 802 | char *pszNext;
|
|---|
| 803 | int rc;
|
|---|
| 804 |
|
|---|
| 805 | AssertPtrReturn(pcszAddr, VERR_INVALID_PARAMETER);
|
|---|
| 806 | AssertPtrReturn(pAddr, VERR_INVALID_PARAMETER);
|
|---|
| 807 | AssertPtrReturn(piPrefix, VERR_INVALID_PARAMETER);
|
|---|
| 808 |
|
|---|
| 809 | pcszAddr = RTStrStripL(pcszAddr);
|
|---|
| 810 | rc = RTNetStrToIPv6AddrEx(pcszAddr, &Addr, &pszNext);
|
|---|
| 811 | if (RT_FAILURE(rc))
|
|---|
| 812 | return rc;
|
|---|
| 813 |
|
|---|
| 814 | /*
|
|---|
| 815 | * If the prefix is missing, treat is as exact (/128) address
|
|---|
| 816 | * specification.
|
|---|
| 817 | */
|
|---|
| 818 | if (*pszNext == '\0' || rc == VWRN_TRAILING_SPACES)
|
|---|
| 819 | {
|
|---|
| 820 | *pAddr = Addr;
|
|---|
| 821 | *piPrefix = 128;
|
|---|
| 822 | return VINF_SUCCESS;
|
|---|
| 823 | }
|
|---|
| 824 |
|
|---|
| 825 | if (*pszNext != '/')
|
|---|
| 826 | return VERR_INVALID_PARAMETER;
|
|---|
| 827 |
|
|---|
| 828 | ++pszNext;
|
|---|
| 829 | rc = RTStrToUInt8Ex(pszNext, &pszNext, 10, &u8Prefix);
|
|---|
| 830 | if (RT_FAILURE(rc) || rc == VWRN_TRAILING_CHARS)
|
|---|
| 831 | return VERR_INVALID_PARAMETER;
|
|---|
| 832 |
|
|---|
| 833 | if (u8Prefix > 128)
|
|---|
| 834 | return VERR_INVALID_PARAMETER;
|
|---|
| 835 |
|
|---|
| 836 | *pAddr = Addr;
|
|---|
| 837 | *piPrefix = u8Prefix;
|
|---|
| 838 | return VINF_SUCCESS;
|
|---|
| 839 | }
|
|---|
| 840 |
|
|---|
| 841 | bool NetworkAddress::isValidString(const char *pcszNetwork)
|
|---|
| 842 | {
|
|---|
| 843 | RTNETADDRIPV4 addrv4;
|
|---|
| 844 | RTNETADDRIPV6 addrv6;
|
|---|
| 845 | int prefix;
|
|---|
| 846 | int rc = RTNetStrToIPv4CidrWithZeroPrefixAllowed(pcszNetwork, &addrv4, &prefix);
|
|---|
| 847 | if (RT_SUCCESS(rc))
|
|---|
| 848 | return true;
|
|---|
| 849 | rc = RTNetStrToIPv6CidrWithZeroPrefixAllowed(pcszNetwork, &addrv6, &prefix);
|
|---|
| 850 | return RT_SUCCESS(rc);
|
|---|
| 851 | }
|
|---|
| 852 |
|
|---|
| 853 | class NetworkAddressIPv4 : public NetworkAddress
|
|---|
| 854 | {
|
|---|
| 855 | public:
|
|---|
| 856 | NetworkAddressIPv4(const char *pcszIpAddress, const char *pcszNetMask = VBOXNET_DEFAULT_IPV4MASK);
|
|---|
| 857 | virtual bool matches(const char *pcszNetwork);
|
|---|
| 858 | virtual const char *defaultNetwork() { return "192.168.56.1/21"; }; /* Matches defaults in VBox/Main/include/netif.h, see @bugref{10077}. */
|
|---|
| 859 |
|
|---|
| 860 | private:
|
|---|
| 861 | RTNETADDRIPV4 m_address;
|
|---|
| 862 | int m_prefix;
|
|---|
| 863 | };
|
|---|
| 864 |
|
|---|
| 865 | NetworkAddressIPv4::NetworkAddressIPv4(const char *pcszIpAddress, const char *pcszNetMask)
|
|---|
| 866 | {
|
|---|
| 867 | int rc = RTNetStrToIPv4Addr(pcszIpAddress, &m_address);
|
|---|
| 868 | if (RT_SUCCESS(rc))
|
|---|
| 869 | {
|
|---|
| 870 | RTNETADDRIPV4 mask;
|
|---|
| 871 | rc = RTNetStrToIPv4Addr(pcszNetMask, &mask);
|
|---|
| 872 | if (RT_FAILURE(rc))
|
|---|
| 873 | m_fValid = false;
|
|---|
| 874 | else
|
|---|
| 875 | rc = RTNetMaskToPrefixIPv4(&mask, &m_prefix);
|
|---|
| 876 | }
|
|---|
| 877 | #if 0 /* cmd.set() does not support CIDR syntax */
|
|---|
| 878 | else
|
|---|
| 879 | rc = RTNetStrToIPv4Cidr(pcszIpAddress, &m_address, &m_prefix);
|
|---|
| 880 | #endif
|
|---|
| 881 | m_fValid = RT_SUCCESS(rc);
|
|---|
| 882 | }
|
|---|
| 883 |
|
|---|
| 884 | bool NetworkAddressIPv4::matches(const char *pcszNetwork)
|
|---|
| 885 | {
|
|---|
| 886 | RTNETADDRIPV4 allowedNet, allowedMask;
|
|---|
| 887 | int allowedPrefix;
|
|---|
| 888 | int rc = RTNetStrToIPv4CidrWithZeroPrefixAllowed(pcszNetwork, &allowedNet, &allowedPrefix);
|
|---|
| 889 | if (RT_SUCCESS(rc))
|
|---|
| 890 | rc = RTNetPrefixToMaskIPv4(allowedPrefix, &allowedMask);
|
|---|
| 891 | if (RT_FAILURE(rc))
|
|---|
| 892 | return false;
|
|---|
| 893 | return m_prefix >= allowedPrefix && (m_address.au32[0] & allowedMask.au32[0]) == (allowedNet.au32[0] & allowedMask.au32[0]);
|
|---|
| 894 | }
|
|---|
| 895 |
|
|---|
| 896 | class NetworkAddressIPv6 : public NetworkAddress
|
|---|
| 897 | {
|
|---|
| 898 | public:
|
|---|
| 899 | NetworkAddressIPv6(const char *pcszIpAddress);
|
|---|
| 900 | virtual bool matches(const char *pcszNetwork);
|
|---|
| 901 | virtual const char *defaultNetwork() { return "FE80::/10"; };
|
|---|
| 902 | private:
|
|---|
| 903 | RTNETADDRIPV6 m_address;
|
|---|
| 904 | int m_prefix;
|
|---|
| 905 | };
|
|---|
| 906 |
|
|---|
| 907 | NetworkAddressIPv6::NetworkAddressIPv6(const char *pcszIpAddress)
|
|---|
| 908 | {
|
|---|
| 909 | int rc = RTNetStrToIPv6Cidr(pcszIpAddress, &m_address, &m_prefix);
|
|---|
| 910 | m_fValid = RT_SUCCESS(rc);
|
|---|
| 911 | }
|
|---|
| 912 |
|
|---|
| 913 | bool NetworkAddressIPv6::matches(const char *pcszNetwork)
|
|---|
| 914 | {
|
|---|
| 915 | RTNETADDRIPV6 allowedNet, allowedMask;
|
|---|
| 916 | int allowedPrefix;
|
|---|
| 917 | int rc = RTNetStrToIPv6CidrWithZeroPrefixAllowed(pcszNetwork, &allowedNet, &allowedPrefix);
|
|---|
| 918 | if (RT_SUCCESS(rc))
|
|---|
| 919 | rc = RTNetPrefixToMaskIPv6(allowedPrefix, &allowedMask);
|
|---|
| 920 | if (RT_FAILURE(rc))
|
|---|
| 921 | return false;
|
|---|
| 922 | RTUINT128U u128Provided, u128Allowed;
|
|---|
| 923 | return m_prefix >= allowedPrefix
|
|---|
| 924 | && RTUInt128Compare(RTUInt128And(&u128Provided, &m_address, &allowedMask), RTUInt128And(&u128Allowed, &allowedNet, &allowedMask)) == 0;
|
|---|
| 925 | }
|
|---|
| 926 |
|
|---|
| 927 |
|
|---|
| 928 | class GlobalNetworkPermissionsConfig
|
|---|
| 929 | {
|
|---|
| 930 | public:
|
|---|
| 931 | bool forbids(const char *pcszIpAddress); /* address or address with mask in cidr */
|
|---|
| 932 | bool forbids(const char *pcszIpAddress, const char *pcszNetMask);
|
|---|
| 933 |
|
|---|
| 934 | private:
|
|---|
| 935 | bool forbids(NetworkAddress& address);
|
|---|
| 936 | };
|
|---|
| 937 |
|
|---|
| 938 | bool GlobalNetworkPermissionsConfig::forbids(const char *pcszIpAddress)
|
|---|
| 939 | {
|
|---|
| 940 | NetworkAddressIPv6 addrv6(pcszIpAddress);
|
|---|
| 941 |
|
|---|
| 942 | if (addrv6.isValid())
|
|---|
| 943 | return forbids(addrv6);
|
|---|
| 944 |
|
|---|
| 945 | NetworkAddressIPv4 addrv4(pcszIpAddress);
|
|---|
| 946 |
|
|---|
| 947 | if (addrv4.isValid())
|
|---|
| 948 | return forbids(addrv4);
|
|---|
| 949 |
|
|---|
| 950 | fprintf(stderr, "Error: invalid address '%s'\n", pcszIpAddress);
|
|---|
| 951 | return true;
|
|---|
| 952 | }
|
|---|
| 953 |
|
|---|
| 954 | bool GlobalNetworkPermissionsConfig::forbids(const char *pcszIpAddress, const char *pcszNetMask)
|
|---|
| 955 | {
|
|---|
| 956 | NetworkAddressIPv4 addrv4(pcszIpAddress, pcszNetMask);
|
|---|
| 957 |
|
|---|
| 958 | if (addrv4.isValid())
|
|---|
| 959 | return forbids(addrv4);
|
|---|
| 960 |
|
|---|
| 961 | fprintf(stderr, "Error: invalid address '%s' with mask '%s'\n", pcszIpAddress, pcszNetMask);
|
|---|
| 962 | return true;
|
|---|
| 963 | }
|
|---|
| 964 |
|
|---|
| 965 | bool GlobalNetworkPermissionsConfig::forbids(NetworkAddress& address)
|
|---|
| 966 | {
|
|---|
| 967 | FILE *fp = fopen(VBOX_GLOBAL_NETWORK_CONFIG_PATH, "r");
|
|---|
| 968 | if (!fp)
|
|---|
| 969 | {
|
|---|
| 970 | if (verbose)
|
|---|
| 971 | fprintf(stderr, "Info: matching against default '%s' => %s\n", address.defaultNetwork(),
|
|---|
| 972 | address.matches(address.defaultNetwork()) ? "MATCH" : "no match");
|
|---|
| 973 | return !address.matches(address.defaultNetwork());
|
|---|
| 974 | }
|
|---|
| 975 |
|
|---|
| 976 | char *pszToken, szLine[1024];
|
|---|
| 977 | for (int line = 1; fgets(szLine, sizeof(szLine), fp); ++line)
|
|---|
| 978 | {
|
|---|
| 979 | /* Skip anything except '*' lines */
|
|---|
| 980 | if (strcmp("*", strtok(szLine, " \t\n")))
|
|---|
| 981 | continue;
|
|---|
| 982 | /* Match the specified address against each network */
|
|---|
| 983 | while ((pszToken = strtok(NULL, " \t\n")) != NULL)
|
|---|
| 984 | {
|
|---|
| 985 | if (!address.isValidString(pszToken))
|
|---|
| 986 | {
|
|---|
| 987 | fprintf(stderr, "Warning: %s(%d) invalid network '%s'\n", VBOX_GLOBAL_NETWORK_CONFIG_PATH, line, pszToken);
|
|---|
| 988 | continue;
|
|---|
| 989 | }
|
|---|
| 990 | if (verbose)
|
|---|
| 991 | fprintf(stderr, "Info: %s(%d) matching against '%s' => %s\n", VBOX_GLOBAL_NETWORK_CONFIG_PATH, line, pszToken,
|
|---|
| 992 | address.matches(pszToken) ? "MATCH" : "no match");
|
|---|
| 993 | if (address.matches(pszToken))
|
|---|
| 994 | return false;
|
|---|
| 995 | }
|
|---|
| 996 | }
|
|---|
| 997 | fclose(fp);
|
|---|
| 998 | return true;
|
|---|
| 999 | }
|
|---|
| 1000 |
|
|---|
| 1001 |
|
|---|
| 1002 | /*********************************************************************************************************************************
|
|---|
| 1003 | * Main logic, argument parsing, etc. *
|
|---|
| 1004 | *********************************************************************************************************************************/
|
|---|
| 1005 |
|
|---|
| 1006 | #if defined(RT_OS_LINUX)
|
|---|
| 1007 | static CmdIfconfigLinux g_ifconfig;
|
|---|
| 1008 | static AdapterLinux g_adapter;
|
|---|
| 1009 | #elif defined(RT_OS_SOLARIS)
|
|---|
| 1010 | static CmdIfconfigSolaris g_ifconfig;
|
|---|
| 1011 | static AdapterSolaris g_adapter;
|
|---|
| 1012 | #else
|
|---|
| 1013 | static CmdIfconfigDarwin g_ifconfig;
|
|---|
| 1014 | static Adapter g_adapter;
|
|---|
| 1015 | #endif
|
|---|
| 1016 |
|
|---|
| 1017 | static AddressCommand& chooseAddressCommand()
|
|---|
| 1018 | {
|
|---|
| 1019 | #if defined(RT_OS_LINUX)
|
|---|
| 1020 | static CmdIpLinux g_ip;
|
|---|
| 1021 | if (g_ip.isAvailable())
|
|---|
| 1022 | return g_ip;
|
|---|
| 1023 | #endif
|
|---|
| 1024 | return g_ifconfig;
|
|---|
| 1025 | }
|
|---|
| 1026 |
|
|---|
| 1027 | int main(int argc, char *argv[])
|
|---|
| 1028 | {
|
|---|
| 1029 | char szAdapterName[VBOXNETADP_MAX_NAME_LEN];
|
|---|
| 1030 | int rc = RTR3InitExe(argc, &argv, 0 /*fFlags*/);
|
|---|
| 1031 | if (RT_FAILURE(rc))
|
|---|
| 1032 | return RTMsgInitFailure(rc);
|
|---|
| 1033 |
|
|---|
| 1034 |
|
|---|
| 1035 | AddressCommand& cmd = chooseAddressCommand();
|
|---|
| 1036 |
|
|---|
| 1037 |
|
|---|
| 1038 | static const struct option options[] = {
|
|---|
| 1039 | { "dry-run", no_argument, NULL, 'n' },
|
|---|
| 1040 | { "verbose", no_argument, NULL, 'v' },
|
|---|
| 1041 | { NULL, 0, NULL, 0 }
|
|---|
| 1042 | };
|
|---|
| 1043 |
|
|---|
| 1044 | int ch;
|
|---|
| 1045 | while ((ch = getopt_long(argc, argv, "nv", options, NULL)) != -1)
|
|---|
| 1046 | {
|
|---|
| 1047 | switch (ch)
|
|---|
| 1048 | {
|
|---|
| 1049 | case 'n':
|
|---|
| 1050 | dry_run = true;
|
|---|
| 1051 | verbose = true;
|
|---|
| 1052 | break;
|
|---|
| 1053 |
|
|---|
| 1054 | case 'v':
|
|---|
| 1055 | verbose = true;
|
|---|
| 1056 | break;
|
|---|
| 1057 |
|
|---|
| 1058 | case '?':
|
|---|
| 1059 | default:
|
|---|
| 1060 | return usage();
|
|---|
| 1061 | }
|
|---|
| 1062 | }
|
|---|
| 1063 | argc -= optind;
|
|---|
| 1064 | argv += optind;
|
|---|
| 1065 |
|
|---|
| 1066 | if (argc == 0)
|
|---|
| 1067 | return usage();
|
|---|
| 1068 |
|
|---|
| 1069 |
|
|---|
| 1070 | /*
|
|---|
| 1071 | * VBoxNetAdpCtl add
|
|---|
| 1072 | */
|
|---|
| 1073 | if (strcmp(argv[0], "add") == 0)
|
|---|
| 1074 | {
|
|---|
| 1075 | if (argc > 1) /* extraneous args */
|
|---|
| 1076 | return usage();
|
|---|
| 1077 |
|
|---|
| 1078 | /* Create a new interface, print its name. */
|
|---|
| 1079 | *szAdapterName = '\0';
|
|---|
| 1080 | rc = g_adapter.add(szAdapterName);
|
|---|
| 1081 | if (rc == EXIT_SUCCESS)
|
|---|
| 1082 | puts(szAdapterName);
|
|---|
| 1083 |
|
|---|
| 1084 | return rc;
|
|---|
| 1085 | }
|
|---|
| 1086 |
|
|---|
| 1087 |
|
|---|
| 1088 | /*
|
|---|
| 1089 | * All other variants are of the form:
|
|---|
| 1090 | * VBoxNetAdpCtl if0 ...action...
|
|---|
| 1091 | */
|
|---|
| 1092 | const char * const ifname = argv[0];
|
|---|
| 1093 | const char * const action = argv[1];
|
|---|
| 1094 | if (argc < 2)
|
|---|
| 1095 | return usage();
|
|---|
| 1096 |
|
|---|
| 1097 |
|
|---|
| 1098 | #ifdef RT_OS_LINUX
|
|---|
| 1099 | /*
|
|---|
| 1100 | * VBoxNetAdpCtl iface42 speed
|
|---|
| 1101 | *
|
|---|
| 1102 | * This ugly hack is needed for retrieving the link speed on
|
|---|
| 1103 | * pre-2.6.33 kernels (see @bugref{6345}).
|
|---|
| 1104 | *
|
|---|
| 1105 | * This variant is used with any interface, not just host-only.
|
|---|
| 1106 | */
|
|---|
| 1107 | if (strcmp(action, "speed") == 0)
|
|---|
| 1108 | {
|
|---|
| 1109 | if (argc > 2) /* extraneous args */
|
|---|
| 1110 | return usage();
|
|---|
| 1111 |
|
|---|
| 1112 | if (strlen(ifname) >= IFNAMSIZ)
|
|---|
| 1113 | {
|
|---|
| 1114 | fprintf(stderr, "Interface name too long\n");
|
|---|
| 1115 | return EXIT_FAILURE;
|
|---|
| 1116 | }
|
|---|
| 1117 |
|
|---|
| 1118 | unsigned uSpeed = 0;
|
|---|
| 1119 | rc = g_adapter.getSpeed(ifname, &uSpeed);
|
|---|
| 1120 | if (rc == EXIT_SUCCESS)
|
|---|
| 1121 | printf("%u", uSpeed);
|
|---|
| 1122 |
|
|---|
| 1123 | return rc;
|
|---|
| 1124 | }
|
|---|
| 1125 | #endif /* RT_OS_LINUX */
|
|---|
| 1126 |
|
|---|
| 1127 |
|
|---|
| 1128 | /*
|
|---|
| 1129 | * The rest of the actions only operate on host-only interfaces.
|
|---|
| 1130 | */
|
|---|
| 1131 | /** @todo Why the code below uses both ifname and szAdapterName? */
|
|---|
| 1132 | rc = g_adapter.checkName(ifname, szAdapterName, sizeof(szAdapterName));
|
|---|
| 1133 | if (rc != EXIT_SUCCESS)
|
|---|
| 1134 | return rc;
|
|---|
| 1135 |
|
|---|
| 1136 |
|
|---|
| 1137 | /*
|
|---|
| 1138 | * VBoxNetAdpCtl vboxnetN remove
|
|---|
| 1139 | */
|
|---|
| 1140 | if (strcmp(action, "remove") == 0)
|
|---|
| 1141 | {
|
|---|
| 1142 | if (argc > 2) /* extraneous args */
|
|---|
| 1143 | return usage();
|
|---|
| 1144 |
|
|---|
| 1145 | /* Remove an existing interface */
|
|---|
| 1146 | return g_adapter.remove(ifname);
|
|---|
| 1147 | }
|
|---|
| 1148 |
|
|---|
| 1149 | /*
|
|---|
| 1150 | * VBoxNetAdpCtl vboxnetN add
|
|---|
| 1151 | */
|
|---|
| 1152 | if (strcmp(action, "add") == 0)
|
|---|
| 1153 | {
|
|---|
| 1154 | if (argc > 2) /* extraneous args */
|
|---|
| 1155 | return usage();
|
|---|
| 1156 |
|
|---|
| 1157 | /* Create an interface with the given name, print its name. */
|
|---|
| 1158 | rc = g_adapter.add(szAdapterName);
|
|---|
| 1159 | if (rc == EXIT_SUCCESS)
|
|---|
| 1160 | puts(szAdapterName);
|
|---|
| 1161 |
|
|---|
| 1162 | return rc;
|
|---|
| 1163 | }
|
|---|
| 1164 |
|
|---|
| 1165 |
|
|---|
| 1166 | /*
|
|---|
| 1167 | * The rest of the actions are of the form
|
|---|
| 1168 | * VBoxNetAdpCtl vboxnetN $addr [...]
|
|---|
| 1169 | *
|
|---|
| 1170 | * Use the argument after the address to select the action.
|
|---|
| 1171 | */
|
|---|
| 1172 | /** @todo Do early verification of addr format here? */
|
|---|
| 1173 | const char * const addr = argv[1];
|
|---|
| 1174 | const char * const keyword = argv[2];
|
|---|
| 1175 |
|
|---|
| 1176 | GlobalNetworkPermissionsConfig config;
|
|---|
| 1177 |
|
|---|
| 1178 | /*
|
|---|
| 1179 | * VBoxNetAdpCtl vboxnetN 1.2.3.4
|
|---|
| 1180 | */
|
|---|
| 1181 | if (keyword == NULL)
|
|---|
| 1182 | {
|
|---|
| 1183 | if (config.forbids(addr))
|
|---|
| 1184 | {
|
|---|
| 1185 | fprintf(stderr, "Error: permission denied\n");
|
|---|
| 1186 | return -VERR_ACCESS_DENIED;
|
|---|
| 1187 | }
|
|---|
| 1188 |
|
|---|
| 1189 | return cmd.set(ifname, addr);
|
|---|
| 1190 | }
|
|---|
| 1191 |
|
|---|
| 1192 | /*
|
|---|
| 1193 | * VBoxNetAdpCtl vboxnetN 1.2.3.4 netmask 255.255.255.0
|
|---|
| 1194 | */
|
|---|
| 1195 | if (strcmp(keyword, "netmask") == 0)
|
|---|
| 1196 | {
|
|---|
| 1197 | if (argc != 4) /* too few or too many args */
|
|---|
| 1198 | return usage();
|
|---|
| 1199 |
|
|---|
| 1200 | const char * const mask = argv[3];
|
|---|
| 1201 | if (config.forbids(addr, mask))
|
|---|
| 1202 | {
|
|---|
| 1203 | fprintf(stderr, "Error: permission denied\n");
|
|---|
| 1204 | return -VERR_ACCESS_DENIED;
|
|---|
| 1205 | }
|
|---|
| 1206 |
|
|---|
| 1207 | return cmd.set(ifname, addr, mask);
|
|---|
| 1208 | }
|
|---|
| 1209 |
|
|---|
| 1210 | /*
|
|---|
| 1211 | * VBoxNetAdpCtl vboxnetN 1.2.3.4 remove
|
|---|
| 1212 | */
|
|---|
| 1213 | if (strcmp(keyword, "remove") == 0)
|
|---|
| 1214 | {
|
|---|
| 1215 | if (argc > 3) /* extraneous args */
|
|---|
| 1216 | return usage();
|
|---|
| 1217 |
|
|---|
| 1218 | return cmd.remove(ifname, addr);
|
|---|
| 1219 | }
|
|---|
| 1220 |
|
|---|
| 1221 | return usage();
|
|---|
| 1222 | }
|
|---|
