1 files changed, 189 insertions, 0 deletions
diff --git a/src/VBox/NetworkServices/DHCP/NetworkManagerDhcp.cpp b/src/VBox/NetworkServices/DHCP/NetworkManagerDhcp.cpp
new file mode 100644
index 00000000..591da5b8
--- /dev/null
+++ b/src/VBox/NetworkServices/DHCP/NetworkManagerDhcp.cpp
@@ -0,0 +1,189 @@
+/* $Id: NetworkManagerDhcp.cpp $ */
+/** @file
+ * NetworkManagerDhcp - Network Manager part handling Dhcp.
+ */
+
+/*
+ * Copyright (C) 2013-2019 Oracle Corporation
+ *
+ * This file is part of VirtualBox Open Source Edition (OSE), as
+ * available from http://www.virtualbox.org. This file is free software;
+ * you can redistribute it and/or modify it under the terms of the GNU
+ * General Public License (GPL) as published by the Free Software
+ * Foundation, in version 2 as it comes in the "COPYING" file of the
+ * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
+ * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
+ */
+
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+#include <iprt/asm.h>
+#include <iprt/cdefs.h>
+#include <iprt/getopt.h>
+#include <iprt/net.h>
+#include <iprt/param.h>
+#include <iprt/path.h>
+#include <iprt/stream.h>
+#include <iprt/time.h>
+#include <iprt/string.h>
+
+#include "../NetLib/shared_ptr.h"
+
+#include <vector>
+#include <list>
+#include <string>
+#include <map>
+
+#include <VBox/sup.h>
+#include <VBox/intnet.h>
+
+#define BASE_SERVICES_ONLY
+#include "../NetLib/VBoxNetBaseService.h"
+#include "Config.h"
+#include "ClientDataInt.h"
+
+/**
+ * The client is requesting an offer.
+ *
+ * @returns true.
+ *
+ * @param   pDhcpMsg    The message.
+ * @param   cb          The message size.
+ */
+bool NetworkManager::handleDhcpReqDiscover(PCRTNETBOOTP pDhcpMsg, size_t cb)
+{
+    RawOption opt;
+    RT_ZERO(opt);
+
+    /* 1. Find client */
+    ConfigurationManager *confManager = ConfigurationManager::getConfigurationManager();
+    Client client = confManager->getClientByDhcpPacket(pDhcpMsg, cb);
+
+    /* 2. Find/Bind lease for client */
+    Lease lease = confManager->allocateLease4Client(client, pDhcpMsg, cb);
+    AssertReturn(lease != Lease::NullLease, VINF_SUCCESS);
+
+    int rc = ConfigurationManager::extractRequestList(pDhcpMsg, cb, opt);
+    NOREF(rc); /** @todo check */
+
+    /* 3. Send of offer */
+
+    lease.bindingPhase(true);
+    lease.phaseStart(RTTimeMilliTS());
+    lease.setExpiration(300); /* 3 min. */
+    offer4Client(client, pDhcpMsg->bp_xid, opt.au8RawOpt, opt.cbRawOpt);
+
+    return true;
+}
+
+
+/**
+ * The client is requesting an offer.
+ *
+ * @returns true.
+ *
+ * @param   pDhcpMsg    The message.
+ * @param   cb          The message size.
+ */
+bool NetworkManager::handleDhcpReqRequest(PCRTNETBOOTP pDhcpMsg, size_t cb)
+{
+    ConfigurationManager *confManager = ConfigurationManager::getConfigurationManager();
+
+    /* 1. find client */
+    Client client = confManager->getClientByDhcpPacket(pDhcpMsg, cb);
+
+    /* 2. find bound lease */
+    Lease l = client.lease();
+    if (l != Lease::NullLease)
+    {
+
+        if (l.isExpired())
+        {
+            /* send client to INIT state */
+            Client c(client);
+            nak(client, pDhcpMsg->bp_xid);
+            confManager->expireLease4Client(c);
+            return true;
+        }
+        /* XXX: Validate request */
+        RawOption opt;
+        RT_ZERO(opt);
+
+        Client c(client);
+        int rc = confManager->commitLease4Client(c);
+        AssertRCReturn(rc, false);
+
+        rc = ConfigurationManager::extractRequestList(pDhcpMsg, cb, opt);
+        AssertRCReturn(rc, false);
+
+        ack(client, pDhcpMsg->bp_xid, opt.au8RawOpt, opt.cbRawOpt);
+    }
+    else
+    {
+        nak(client, pDhcpMsg->bp_xid);
+    }
+    return true;
+}
+
+
+/**
+ * The client is declining an offer we've made.
+ *
+ * @returns true.
+ *
+ * @param   pDhcpMsg    The message.
+ * @param   cb          The message size.
+ */
+bool NetworkManager::handleDhcpReqDecline(PCRTNETBOOTP, size_t)
+{
+    /** @todo Probably need to match the server IP here to work correctly with
+     *        other servers. */
+
+    /*
+     * The client is supposed to pass us option 50, requested address,
+     * from the offer. We also match the lease state. Apparently the
+     * MAC address is not supposed to be checked here.
+     */
+
+    /** @todo this is not required in the initial implementation, do it later. */
+    return true;
+}
+
+
+/**
+ * The client is releasing its lease - good boy.
+ *
+ * @returns true.
+ *
+ * @param   pDhcpMsg    The message.
+ * @param   cb          The message size.
+ */
+bool NetworkManager::handleDhcpReqRelease(PCRTNETBOOTP, size_t)
+{
+    /** @todo Probably need to match the server IP here to work correctly with
+     *        other servers. */
+
+    /*
+     * The client may pass us option 61, client identifier, which we should
+     * use to find the lease by.
+     *
+     * We're matching MAC address and lease state as well.
+     */
+
+    /*
+     * If no client identifier or if we couldn't find a lease by using it,
+     * we will try look it up by the client IP address.
+     */
+
+
+    /*
+     * If found, release it.
+     */
+
+
+    /** @todo this is not required in the initial implementation, do it later. */
+    return true;
+}
+