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Diffstat (limited to 'src/Cedar/NullLan.c')
-rw-r--r-- | src/Cedar/NullLan.c | 256 |
1 files changed, 256 insertions, 0 deletions
diff --git a/src/Cedar/NullLan.c b/src/Cedar/NullLan.c new file mode 100644 index 00000000..8f3fad40 --- /dev/null +++ b/src/Cedar/NullLan.c @@ -0,0 +1,256 @@ +// SoftEther VPN Source Code
+// Cedar Communication Module
+//
+// SoftEther VPN Server, Client and Bridge are free software under GPLv2.
+//
+// Copyright (c) 2012-2014 Daiyuu Nobori.
+// Copyright (c) 2012-2014 SoftEther VPN Project, University of Tsukuba, Japan.
+// Copyright (c) 2012-2014 SoftEther Corporation.
+//
+// All Rights Reserved.
+//
+// http://www.softether.org/
+//
+// Author: Daiyuu Nobori
+// Comments: Tetsuo Sugiyama, Ph.D.
+//
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License
+// version 2 as published by the Free Software Foundation.
+//
+// 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 version 2
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+// CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+// TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+// SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//
+// THE LICENSE AGREEMENT IS ATTACHED ON THE SOURCE-CODE PACKAGE
+// AS "LICENSE.TXT" FILE. READ THE TEXT FILE IN ADVANCE TO USE THE SOFTWARE.
+//
+//
+// THIS SOFTWARE IS DEVELOPED IN JAPAN, AND DISTRIBUTED FROM JAPAN,
+// UNDER JAPANESE LAWS. YOU MUST AGREE IN ADVANCE TO USE, COPY, MODIFY,
+// MERGE, PUBLISH, DISTRIBUTE, SUBLICENSE, AND/OR SELL COPIES OF THIS
+// SOFTWARE, THAT ANY JURIDICAL DISPUTES WHICH ARE CONCERNED TO THIS
+// SOFTWARE OR ITS CONTENTS, AGAINST US (SOFTETHER PROJECT, SOFTETHER
+// CORPORATION, DAIYUU NOBORI OR OTHER SUPPLIERS), OR ANY JURIDICAL
+// DISPUTES AGAINST US WHICH ARE CAUSED BY ANY KIND OF USING, COPYING,
+// MODIFYING, MERGING, PUBLISHING, DISTRIBUTING, SUBLICENSING, AND/OR
+// SELLING COPIES OF THIS SOFTWARE SHALL BE REGARDED AS BE CONSTRUED AND
+// CONTROLLED BY JAPANESE LAWS, AND YOU MUST FURTHER CONSENT TO
+// EXCLUSIVE JURISDICTION AND VENUE IN THE COURTS SITTING IN TOKYO,
+// JAPAN. YOU MUST WAIVE ALL DEFENSES OF LACK OF PERSONAL JURISDICTION
+// AND FORUM NON CONVENIENS. PROCESS MAY BE SERVED ON EITHER PARTY IN
+// THE MANNER AUTHORIZED BY APPLICABLE LAW OR COURT RULE.
+//
+// USE ONLY IN JAPAN. DO NOT USE IT IN OTHER COUNTRIES. IMPORTING THIS
+// SOFTWARE INTO OTHER COUNTRIES IS AT YOUR OWN RISK. SOME COUNTRIES
+// PROHIBIT ENCRYPTED COMMUNICATIONS. USING THIS SOFTWARE IN OTHER
+// COUNTRIES MIGHT BE RESTRICTED.
+//
+//
+// DEAR SECURITY EXPERTS
+// ---------------------
+//
+// If you find a bug or a security vulnerability please kindly inform us
+// about the problem immediately so that we can fix the security problem
+// to protect a lot of users around the world as soon as possible.
+//
+// Our e-mail address for security reports is:
+// softether-vpn-security [at] softether.org
+//
+// Please note that the above e-mail address is not a technical support
+// inquiry address. If you need technical assistance, please visit
+// http://www.softether.org/ and ask your question on the users forum.
+//
+// Thank you for your cooperation.
+
+
+// NullLan.c
+// Virtual LAN card device driver for testing
+
+#include "CedarPch.h"
+
+static UCHAR null_lan_broadcast_address[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
+
+// Get the packet adapter
+PACKET_ADAPTER *NullGetPacketAdapter()
+{
+ PACKET_ADAPTER *pa = NewPacketAdapter(NullPaInit, NullPaGetCancel, NullPaGetNextPacket,
+ NullPaPutPacket, NullPaFree);
+
+ return pa;
+}
+
+// Packet generation thread
+void NullPacketGenerateThread(THREAD *t, void *param)
+{
+ NULL_LAN *n = (NULL_LAN *)param;
+ // Validate arguments
+ if (t == NULL || param == NULL)
+ {
+ return;
+ }
+
+ while (true)
+ {
+ Wait(n->Event, Rand32() % NULL_PACKET_GENERATE_INTERVAL);
+ if (n->Halt)
+ {
+ break;
+ }
+
+ LockQueue(n->PacketQueue);
+ {
+ UCHAR *data;
+ BLOCK *b;
+ UINT size = Rand32() % 1500 + 14;
+ data = Malloc(size);
+ Copy(data, null_lan_broadcast_address, 6);
+ Copy(data + 6, n->MacAddr, 6);
+ b = NewBlock(data, size, 0);
+ InsertQueue(n->PacketQueue, b);
+ }
+ UnlockQueue(n->PacketQueue);
+ Cancel(n->Cancel);
+ }
+}
+
+// Initialize the packet adapter
+bool NullPaInit(SESSION *s)
+{
+ NULL_LAN *n;
+ // Validate arguments
+ if (s == NULL)
+ {
+ return false;
+ }
+
+ n = ZeroMalloc(sizeof(NULL_LAN));
+ s->PacketAdapter->Param = (void *)n;
+
+ n->Cancel = NewCancel();
+ n->PacketQueue = NewQueue();
+ n->Event = NewEvent();
+
+ GenMacAddress(n->MacAddr);
+
+ n->PacketGeneratorThread = NewThread(NullPacketGenerateThread, n);
+
+ return true;
+}
+
+// Get the cancel object
+CANCEL *NullPaGetCancel(SESSION *s)
+{
+ // Validate arguments
+ NULL_LAN *n;
+ if (s == NULL || (n = s->PacketAdapter->Param) == NULL)
+ {
+ return NULL;
+ }
+
+ AddRef(n->Cancel->ref);
+
+ return n->Cancel;
+}
+
+// Get the next packet
+UINT NullPaGetNextPacket(SESSION *s, void **data)
+{
+ UINT size = 0;
+ // Validate arguments
+ NULL_LAN *n;
+ if (s == NULL || (n = s->PacketAdapter->Param) == NULL)
+ {
+ return INFINITE;
+ }
+
+ LockQueue(n->PacketQueue);
+ {
+ BLOCK *b = GetNext(n->PacketQueue);
+
+ if (b != NULL)
+ {
+ *data = b->Buf;
+ size = b->Size;
+ Free(b);
+ }
+ }
+ UnlockQueue(n->PacketQueue);
+
+ return size;
+}
+
+// Write the packet
+bool NullPaPutPacket(SESSION *s, void *data, UINT size)
+{
+ // Validate arguments
+ if (s == NULL)
+ {
+ return false;
+ }
+ if (data == NULL)
+ {
+ return true;
+ }
+
+ // Packet ignored
+ Free(data);
+
+ return true;
+}
+
+// Release
+void NullPaFree(SESSION *s)
+{
+ // Validate arguments
+ NULL_LAN *n;
+ BLOCK *b;
+ if (s == NULL || (n = s->PacketAdapter->Param) == NULL)
+ {
+ return;
+ }
+
+ n->Halt = true;
+ Set(n->Event);
+
+ WaitThread(n->PacketGeneratorThread, INFINITE);
+ ReleaseThread(n->PacketGeneratorThread);
+
+ LockQueue(n->PacketQueue);
+ {
+ while (b = GetNext(n->PacketQueue))
+ {
+ FreeBlock(b);
+ }
+ }
+ UnlockQueue(n->PacketQueue);
+
+ ReleaseQueue(n->PacketQueue);
+
+ ReleaseCancel(n->Cancel);
+
+ ReleaseEvent(n->Event);
+
+ s->PacketAdapter->Param = NULL;
+ Free(n);
+}
+
+
+
+// Developed by SoftEther VPN Project at University of Tsukuba in Japan.
+// Department of Computer Science has dozens of overly-enthusiastic geeks.
+// Join us: http://www.tsukuba.ac.jp/english/admission/
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