1 files changed, 126 insertions, 0 deletions
diff --git a/src/VBox/NetworkServices/Dhcpd/ClientId.cpp b/src/VBox/NetworkServices/Dhcpd/ClientId.cpp
new file mode 100644
index 00000000..0deda965
--- /dev/null
+++ b/src/VBox/NetworkServices/Dhcpd/ClientId.cpp
@@ -0,0 +1,126 @@
+/* $Id: ClientId.cpp $ */
+/** @file
+ * DHCP server - client identifier
+ */
+
+/*
+ * Copyright (C) 2017-2022 Oracle and/or its affiliates.
+ *
+ * This file is part of VirtualBox base platform packages, as
+ * available from https://www.virtualbox.org.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, in version 3 of the
+ * License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <https://www.gnu.org/licenses>.
+ *
+ * SPDX-License-Identifier: GPL-3.0-only
+ */
+
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+#include <algorithm>
+#include "ClientId.h"
+
+
+/*********************************************************************************************************************************
+*   Global Variables                                                                                                             *
+*********************************************************************************************************************************/
+/** Indiciates wherther ClientId::rtStrFormat was already registered. */
+bool ClientId::g_fFormatRegistered = false;
+
+
+/**
+ * Registers the ClientId format type callback ("%R[id]").
+ */
+void ClientId::registerFormat() RT_NOEXCEPT
+{
+    if (!g_fFormatRegistered)
+    {
+        int rc = RTStrFormatTypeRegister("id", rtStrFormat, NULL);
+        AssertRC(rc);
+        g_fFormatRegistered = RT_SUCCESS(rc);
+    }
+}
+
+
+/**
+ * @callback_method_impl{FNRTSTRFORMATTYPE, Formats ClientId via "%R[id]". }
+ */
+DECLCALLBACK(size_t)
+ClientId::rtStrFormat(PFNRTSTROUTPUT pfnOutput, void *pvArgOutput,
+                      const char *pszType, void const *pvValue,
+                      int cchWidth, int cchPrecision, unsigned fFlags,
+                      void *pvUser)
+{
+    RT_NOREF(pszType, cchWidth, cchPrecision, fFlags, pvUser);
+    Assert(strcmp(pszType, "id") == 0);
+
+    const ClientId *pThis = static_cast<const ClientId *>(pvValue);
+    if (pThis == NULL)
+        return pfnOutput(pvArgOutput, RT_STR_TUPLE("<NULL>"));
+
+    size_t cb = 0;
+    if (pThis->m_id.present())
+    {
+        cb += pfnOutput(pvArgOutput, RT_STR_TUPLE("["));
+
+        const OptClientId::value_t &idopt = pThis->m_id.value();
+        for (size_t i = 0; i < idopt.size(); ++i)
+            cb += RTStrFormat(pfnOutput, pvArgOutput, NULL, 0, "%s%02x", (i == 0 ? "" : ":"), idopt[i]);
+
+        cb += pfnOutput(pvArgOutput, RT_STR_TUPLE("] ("));
+    }
+
+    cb += RTStrFormat(pfnOutput, pvArgOutput, NULL, 0, "%RTmac", &pThis->m_mac);
+
+    if (pThis->m_id.present())
+        cb += pfnOutput(pvArgOutput, RT_STR_TUPLE(")"));
+
+    return cb;
+}
+
+
+bool operator==(const ClientId &l, const ClientId &r) RT_NOEXCEPT
+{
+    if (l.m_id.present())
+    {
+        if (r.m_id.present())
+            return l.m_id.value() == r.m_id.value();
+    }
+    else
+    {
+        if (!r.m_id.present())
+            return l.m_mac == r.m_mac;
+    }
+
+    return false;
+}
+
+
+bool operator<(const ClientId &l, const ClientId &r) RT_NOEXCEPT
+{
+    if (l.m_id.present())
+    {
+        if (r.m_id.present())
+            return l.m_id.value() < r.m_id.value();
+        return false;           /* the one with id comes last */
+    }
+    else
+    {
+        if (r.m_id.present())
+            return true;        /* the one with id comes last */
+        return l.m_mac < r.m_mac;
+    }
+}
+