v4.03-9408-rtm

1 files changed, 188 insertions, 0 deletions

diff --git a/src/Cedar/Listener.h b/src/Cedar/Listener.h
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+// 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.

+

+

+// Listener.h

+// Header of Listener.c

+

+#ifndef	LISTENER_H

+#define	LISTENER_H

+

+

+// Function to call when receiving a new connection

+typedef void (NEW_CONNECTION_PROC)(CONNECTION *c);

+

+

+

+// Listener structure

+struct LISTENER

+{

+	LOCK *lock;						// Lock

+	REF *ref;						// Reference counter

+	CEDAR *Cedar;					// Cedar

+	UINT Protocol;					// Protocol

+	UINT Port;						// Port number

+	THREAD *Thread;					// Operating thread

+	SOCK *Sock;						// Socket

+	EVENT *Event;					// Event

+	volatile bool Halt;				// Halting flag

+	UINT Status;					// State

+

+

+	THREAD_PROC *ThreadProc;		// Thread procedure

+	void *ThreadParam;				// Thread parameters

+	bool LocalOnly;					// Can be connected only from localhost

+	bool ShadowIPv6;				// Flag indicating that the shadow IPv6 listener

+	LISTENER *ShadowListener;		// Reference to managing shadow IPv6 listener

+	bool DisableDos;				// Disable the DoS attack detection

+	volatile UINT *NatTGlobalUdpPort;	// NAT-T global UDP port number

+	UCHAR RandPortId;				// NAT-T UDP random port ID

+	bool EnableConditionalAccept;	// The flag of whether to enable the Conditional Accept

+};

+

+// Parameters of TCPAcceptedThread

+struct TCP_ACCEPTED_PARAM

+{

+	LISTENER *r;

+	SOCK *s;

+};

+

+// UDP entry

+struct UDP_ENTRY

+{

+	UINT SessionKey32;				// 32bit session key

+	SESSION *Session;				// Reference to the session

+};

+

+// Dynamic listener

+struct DYNAMIC_LISTENER

+{

+	UINT Protocol;					// Protocol

+	UINT Port;						// Port

+	LOCK *Lock;						// Lock

+	CEDAR *Cedar;					// Cedar

+	bool *EnablePtr;				// A pointer to the flag of the valid / invalid state

+	LISTENER *Listener;				// Listener

+};

+

+

+// Function prototype

+LISTENER *NewListener(CEDAR *cedar, UINT proto, UINT port);

+LISTENER *NewListenerEx(CEDAR *cedar, UINT proto, UINT port, THREAD_PROC *proc, void *thread_param);

+LISTENER *NewListenerEx2(CEDAR *cedar, UINT proto, UINT port, THREAD_PROC *proc, void *thread_param, bool local_only);

+LISTENER *NewListenerEx3(CEDAR *cedar, UINT proto, UINT port, THREAD_PROC *proc, void *thread_param, bool local_only, bool shadow_ipv6);

+LISTENER *NewListenerEx4(CEDAR *cedar, UINT proto, UINT port, THREAD_PROC *proc, void *thread_param, bool local_only, bool shadow_ipv6,

+						 volatile UINT *natt_global_udp_port, UCHAR rand_port_id);

+LISTENER *NewListenerEx5(CEDAR *cedar, UINT proto, UINT port, THREAD_PROC *proc, void *thread_param, bool local_only, bool shadow_ipv6,

+						 volatile UINT *natt_global_udp_port, UCHAR rand_port_id, bool enable_ca);

+void ReleaseListener(LISTENER *r);

+void CleanupListener(LISTENER *r);

+void ListenerThread(THREAD *thread, void *param);

+void ListenerTCPMainLoop(LISTENER *r);

+void StopListener(LISTENER *r);

+int CompareListener(void *p1, void *p2);

+void TCPAccepted(LISTENER *r, SOCK *s);

+void EnableDosProtect();

+void DisableDosProtect();

+void TCPAcceptedThread(THREAD *t, void *param);

+void ListenerUDPMainLoop(LISTENER *r);

+void UDPReceivedPacket(CEDAR *cedar, SOCK *s, IP *ip, UINT port, void *data, UINT size);

+int CompareUDPEntry(void *p1, void *p2);

+void CleanupUDPEntry(CEDAR *cedar);

+void AddUDPEntry(CEDAR *cedar, SESSION *session);

+void DelUDPEntry(CEDAR *cedar, SESSION *session);

+SESSION *GetSessionFromUDPEntry(CEDAR *cedar, UINT key32);

+UINT GetMaxConnectionsPerIp();

+void SetMaxConnectionsPerIp(UINT num);

+UINT GetMaxUnestablishedConnections();

+void SetMaxUnestablishedConnections(UINT num);

+DYNAMIC_LISTENER *NewDynamicListener(CEDAR *c, bool *enable_ptr, UINT protocol, UINT port);

+void ApplyDynamicListener(DYNAMIC_LISTENER *d);

+void FreeDynamicListener(DYNAMIC_LISTENER *d);

+bool ListenerRUDPRpcRecvProc(RUDP_STACK *r, UDPPACKET *p);

+void ListenerSetProcRecvRpcEnable(bool b);

+

+

+#endif	// LISTENER_H

+

+

+

+// 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/