| 1 | /* $Id: macstr.cpp 96407 2022-08-22 17:43:14Z vboxsync $ */
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| 2 | /** @file
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| 3 | * IPRT - Command Line Parsing
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2013-2022 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 | * The contents of this file may alternatively be used under the terms
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| 26 | * of the Common Development and Distribution License Version 1.0
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| 27 | * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
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| 28 | * in the VirtualBox distribution, in which case the provisions of the
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| 29 | * CDDL are applicable instead of those of the GPL.
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| 30 | *
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| 31 | * You may elect to license modified versions of this file under the
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| 32 | * terms and conditions of either the GPL or the CDDL or both.
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| 33 | *
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| 34 | * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
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| 35 | */
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| 36 |
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| 37 |
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| 38 | /*********************************************************************************************************************************
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| 39 | * Header Files *
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| 40 | *********************************************************************************************************************************/
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| 41 | #include <iprt/cidr.h>
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| 42 | #include <iprt/net.h> /* must come before getopt.h */
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| 43 | #include "internal/iprt.h"
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| 44 |
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| 45 | #include <iprt/assert.h>
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| 46 | #include <iprt/ctype.h>
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| 47 | #include <iprt/errcore.h>
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| 48 | #include <iprt/message.h>
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| 49 | #include <iprt/string.h>
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| 50 |
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| 51 |
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| 52 | /**
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| 53 | * Converts an stringified Ethernet MAC address into the RTMAC representation.
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| 54 | *
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| 55 | * @returns VINF_SUCCESS on success.
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| 56 | *
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| 57 | * @param pszValue The value to convert.
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| 58 | * @param pAddr Where to store the result.
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| 59 | */
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| 60 | RTDECL(int) RTNetStrToMacAddr(const char *pszValue, PRTMAC pAddr)
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| 61 | {
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| 62 | /*
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| 63 | * First check if it might be a 12 xdigit string without any separators.
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| 64 | */
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| 65 | size_t cchValue = strlen(pszValue);
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| 66 | if (cchValue >= 12 && memchr(pszValue, ':', 12) == NULL)
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| 67 | {
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| 68 | bool fOkay = true;
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| 69 | for (size_t off = 0; off < 12 && fOkay; off++)
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| 70 | fOkay = RT_C_IS_XDIGIT(pszValue[off]);
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| 71 | if (fOkay && cchValue > 12)
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| 72 | for (size_t off = 12; off < cchValue && fOkay; off++)
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| 73 | fOkay = RT_C_IS_SPACE(pszValue[off]);
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| 74 | if (fOkay)
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| 75 | {
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| 76 | int rc = RTStrConvertHexBytes(pszValue, pAddr, sizeof(*pAddr), 0);
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| 77 | if (RT_SUCCESS(rc))
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| 78 | rc = VINF_SUCCESS;
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| 79 | return rc;
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| 80 | }
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| 81 | }
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| 82 |
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| 83 | /*
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| 84 | * Not quite sure if I should accept stuff like "08::27:::1" here...
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| 85 | * The code is accepting "::" patterns now, except for for the first
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| 86 | * and last parts.
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| 87 | */
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| 88 |
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| 89 | /* first */
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| 90 | char *pszNext;
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| 91 | int rc = RTStrToUInt8Ex(RTStrStripL(pszValue), &pszNext, 16, &pAddr->au8[0]);
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| 92 | if (rc != VINF_SUCCESS && rc != VWRN_TRAILING_CHARS)
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| 93 | return VERR_INVALID_PARAMETER;
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| 94 | if (*pszNext++ != ':')
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| 95 | return VERR_INVALID_PARAMETER;
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| 96 |
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| 97 | /* middle */
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| 98 | for (unsigned i = 1; i < 5; i++)
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| 99 | {
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| 100 | if (*pszNext == ':')
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| 101 | pAddr->au8[i] = 0;
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| 102 | else
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| 103 | {
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| 104 | rc = RTStrToUInt8Ex(pszNext, &pszNext, 16, &pAddr->au8[i]);
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| 105 | if (rc != VINF_SUCCESS && rc != VWRN_TRAILING_CHARS)
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| 106 | return rc;
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| 107 | if (*pszNext != ':')
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| 108 | return VERR_INVALID_PARAMETER;
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| 109 | }
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| 110 | pszNext++;
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| 111 | }
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| 112 |
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| 113 | /* last */
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| 114 | rc = RTStrToUInt8Ex(pszNext, &pszNext, 16, &pAddr->au8[5]);
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| 115 | if (rc != VINF_SUCCESS && rc != VWRN_TRAILING_SPACES)
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| 116 | return rc;
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| 117 | pszNext = RTStrStripL(pszNext);
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| 118 | if (*pszNext)
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| 119 | return VERR_INVALID_PARAMETER;
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| 120 |
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| 121 | return VINF_SUCCESS;
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| 122 | }
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| 123 | RT_EXPORT_SYMBOL(RTNetStrToMacAddr);
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