| 1 | /* $Id: ClientId.cpp 106061 2024-09-16 14:03:52Z vboxsync $ */
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| 2 | /** @file
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| 3 | * DHCP server - client identifier
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2017-2024 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 | /*********************************************************************************************************************************
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| 30 | * Header Files *
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| 31 | *********************************************************************************************************************************/
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| 32 | #include <algorithm>
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| 33 | #include "ClientId.h"
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| 34 |
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| 35 |
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| 36 | /*********************************************************************************************************************************
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| 37 | * Global Variables *
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| 38 | *********************************************************************************************************************************/
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| 39 | /** Indiciates wherther ClientId::rtStrFormat was already registered. */
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| 40 | bool ClientId::g_fFormatRegistered = false;
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| 41 |
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| 42 |
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| 43 | /**
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| 44 | * Registers the ClientId format type callback ("%R[id]").
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| 45 | */
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| 46 | void ClientId::registerFormat() RT_NOEXCEPT
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| 47 | {
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| 48 | if (!g_fFormatRegistered)
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| 49 | {
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| 50 | int rc = RTStrFormatTypeRegister("id", rtStrFormat, NULL);
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| 51 | AssertRC(rc);
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| 52 | g_fFormatRegistered = RT_SUCCESS(rc);
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| 53 | }
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| 54 | }
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| 55 |
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| 56 |
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| 57 | /**
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| 58 | * @callback_method_impl{FNRTSTRFORMATTYPE, Formats ClientId via "%R[id]". }
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| 59 | */
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| 60 | DECLCALLBACK(size_t)
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| 61 | ClientId::rtStrFormat(PFNRTSTROUTPUT pfnOutput, void *pvArgOutput,
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| 62 | const char *pszType, void const *pvValue,
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| 63 | int cchWidth, int cchPrecision, unsigned fFlags,
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| 64 | void *pvUser)
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| 65 | {
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| 66 | RT_NOREF(pszType, cchWidth, cchPrecision, fFlags, pvUser);
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| 67 | Assert(strcmp(pszType, "id") == 0);
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| 68 |
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| 69 | const ClientId *pThis = static_cast<const ClientId *>(pvValue);
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| 70 | if (pThis == NULL)
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| 71 | return pfnOutput(pvArgOutput, RT_STR_TUPLE("<NULL>"));
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| 72 |
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| 73 | size_t cb = 0;
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| 74 | if (pThis->m_id.present())
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| 75 | {
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| 76 | cb += pfnOutput(pvArgOutput, RT_STR_TUPLE("["));
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| 77 |
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| 78 | const OptClientId::value_t &idopt = pThis->m_id.value();
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| 79 | for (size_t i = 0; i < idopt.size(); ++i)
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| 80 | cb += RTStrFormat(pfnOutput, pvArgOutput, NULL, 0, "%s%02x", (i == 0 ? "" : ":"), idopt[i]);
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| 81 |
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| 82 | cb += pfnOutput(pvArgOutput, RT_STR_TUPLE("] ("));
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| 83 | }
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| 84 |
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| 85 | cb += RTStrFormat(pfnOutput, pvArgOutput, NULL, 0, "%RTmac", &pThis->m_mac);
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| 86 |
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| 87 | if (pThis->m_id.present())
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| 88 | cb += pfnOutput(pvArgOutput, RT_STR_TUPLE(")"));
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| 89 |
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| 90 | return cb;
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| 91 | }
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| 92 |
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| 93 |
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| 94 | bool operator==(const ClientId &l, const ClientId &r) RT_NOEXCEPT
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| 95 | {
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| 96 | if (l.m_id.present())
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| 97 | {
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| 98 | if (r.m_id.present())
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| 99 | return l.m_id.value() == r.m_id.value();
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| 100 | }
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| 101 | else
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| 102 | {
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| 103 | if (!r.m_id.present())
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| 104 | return l.m_mac == r.m_mac;
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| 105 | }
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| 106 |
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| 107 | return false;
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| 108 | }
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| 109 |
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| 110 |
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| 111 | bool operator<(const ClientId &l, const ClientId &r) RT_NOEXCEPT
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| 112 | {
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| 113 | if (l.m_id.present())
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| 114 | {
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| 115 | if (r.m_id.present())
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| 116 | return l.m_id.value() < r.m_id.value();
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| 117 | return false; /* the one with id comes last */
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| 118 | }
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| 119 | else
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| 120 | {
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| 121 | if (r.m_id.present())
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| 122 | return true; /* the one with id comes last */
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| 123 | return l.m_mac < r.m_mac;
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| 124 | }
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| 125 | }
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| 126 |
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