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Diffstat (limited to 'src/Cedar/IPsec_IPC.h')
-rw-r--r-- | src/Cedar/IPsec_IPC.h | 243 |
1 files changed, 243 insertions, 0 deletions
diff --git a/src/Cedar/IPsec_IPC.h b/src/Cedar/IPsec_IPC.h new file mode 100644 index 00000000..0861c13f --- /dev/null +++ b/src/Cedar/IPsec_IPC.h @@ -0,0 +1,243 @@ +// 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.
+
+
+// IPsec_IPC.h
+// Header of IPsec_IPC.c
+
+#ifndef IPSEC_IPC
+#define IPSEC_IPC
+
+// Constants
+#define IPC_ARP_LIFETIME (3 * 60 * 1000)
+#define IPC_ARP_GIVEUPTIME (1 * 1000)
+#define IPC_DHCP_TIMEOUT (5 * 1000)
+#define IPC_DHCP_TIMEOUT_TOTAL_GIVEUP (20 * 1000)
+#define IPC_DHCP_MIN_LEASE 5
+#define IPC_DHCP_DEFAULT_LEASE 3600
+
+#define IPC_MAX_PACKET_QUEUE_LEN 10000
+
+#define IPC_DHCP_VENDOR_ID "MSFT 5.0"
+
+#define IPC_PASSWORD_MSCHAPV2_TAG "xH7DiNlurDhcYV4a:"
+
+// ARP table entry
+struct IPC_ARP
+{
+ IP Ip; // IP address
+ bool Resolved; // Whether the MAC address have been resolved
+ UCHAR MacAddress[6]; // MAC address
+ UINT64 GiveupTime; // Time to give up (in the case of unresolved)
+ UINT64 ExpireTime; // Expiration date (If resolved)
+ QUEUE *PacketQueue; // Transmission packet queue
+};
+
+// DHCP release queue
+struct IPC_DHCP_RELESAE_QUEUE
+{
+ DHCP_OPTION_LIST Req;
+ UINT TranId;
+ UCHAR MacAddress[6];
+};
+
+// IPC_PARAM
+struct IPC_PARAM
+{
+ char ClientName[MAX_SIZE];
+ char Postfix[MAX_SIZE];
+ char HubName[MAX_HUBNAME_LEN + 1];
+ char UserName[MAX_USERNAME_LEN + 1];
+ char Password[MAX_PASSWORD_LEN + 1];
+ IP ClientIp;
+ UINT ClientPort;
+ IP ServerIp;
+ UINT ServerPort;
+ char ClientHostname[MAX_SIZE];
+ char CryptName[MAX_SIZE];
+ bool BridgeMode;
+ UINT Mss;
+ bool IsL3Mode;
+ bool IsOpenVPN;
+};
+
+// IPC_ASYNC object
+struct IPC_ASYNC
+{
+ CEDAR *Cedar; // Cedar
+ IPC_PARAM Param; // Parameters for creating IPC
+ THREAD *Thread; // Thread
+ SOCK_EVENT *SockEvent; // Socket events that is set when the connection is completed
+ bool Done; // Processing completion flag
+ IPC *Ipc; // IPC object (if it fails to connect, the value is NULL)
+ TUBE *TubeForDisconnect; // Tube for disconnection notification
+ UINT ErrorCode; // Error code in the case of failing to connect
+ DHCP_OPTION_LIST L3ClientAddressOption; // Client IP address option (Only in the case of L3 mode)
+ UINT64 L3DhcpRenewInterval; // DHCP update interval
+ UINT64 L3NextDhcpRenewTick; // DHCP renewal time of the next
+ bool DhcpAllocFailed; // Failed to get IP address from the DHCP server
+};
+
+// IPC object
+struct IPC
+{
+ CEDAR *Cedar;
+ char HubName[MAX_HUBNAME_LEN + 1];
+ char UserName[MAX_USERNAME_LEN + 1];
+ char Password[MAX_PASSWORD_LEN + 1];
+ char ClientHostname[MAX_SIZE];
+ UCHAR random[SHA1_SIZE];
+ char SessionName[MAX_SESSION_NAME_LEN + 1];
+ char ConnectionName[MAX_CONNECTION_NAME_LEN + 1];
+ POLICY *Policy;
+ SOCK *Sock;
+ INTERRUPT_MANAGER *Interrupt; // Interrupt manager
+ IP ClientIPAddress; // IP address of the client
+ IP SubnetMask; // Subnet mask of the client
+ IP DefaultGateway; // Default gateway address
+ IP BroadcastAddress; // Broadcast address
+ UCHAR MacAddress[6]; // MAC address
+ UCHAR Padding[2];
+ LIST *ArpTable; // ARP table
+ QUEUE *IPv4RecviedQueue; // IPv4 reception queue
+ TUBE_FLUSH_LIST *FlushList; // Tube Flush List
+ UCHAR MsChapV2_ServerResponse[20]; // Server response
+};
+
+// MS-CHAPv2 authentication information
+struct IPC_MSCHAP_V2_AUTHINFO
+{
+ char MsChapV2_PPPUsername[MAX_SIZE]; // MS-CHAPv2 Username
+ UCHAR MsChapV2_ServerChallenge[16]; // MS-CHAPv2 Server Challenge
+ UCHAR MsChapV2_ClientChallenge[16]; // MS-CHAPv2 Client Challenge
+ UCHAR MsChapV2_ClientResponse[24]; // MS-CHAPv2 Client Response
+};
+
+IPC *NewIPC(CEDAR *cedar, char *client_name, char *postfix, char *hubname, char *username, char *password,
+ UINT *error_code, IP *client_ip, UINT client_port, IP *server_ip, UINT server_port,
+ char *client_hostname, char *crypt_name,
+ bool bridge_mode, UINT mss);
+IPC *NewIPCByParam(CEDAR *cedar, IPC_PARAM *param, UINT *error_code);
+IPC *NewIPCBySock(CEDAR *cedar, SOCK *s, void *mac_address);
+void FreeIPC(IPC *ipc);
+bool IsIPCConnected(IPC *ipc);
+void IPCSetSockEventWhenRecvL2Packet(IPC *ipc, SOCK_EVENT *e);
+void IPCSendL2(IPC *ipc, void *data, UINT size);
+void IPCSendIPv4(IPC *ipc, void *data, UINT size);
+BLOCK *IPCRecvL2(IPC *ipc);
+BLOCK *IPCRecvIPv4(IPC *ipc);
+void IPCProcessInterrupts(IPC *ipc);
+void IPCProcessL3Events(IPC *ipc);
+void IPCProcessL3EventsEx(IPC *ipc, UINT64 now);
+bool IPCSetIPv4Parameters(IPC *ipc, IP *ip, IP *subnet, IP *gw);
+IPC_ARP *IPCNewARP(IP *ip, UCHAR *mac_address);
+void IPCFreeARP(IPC_ARP *a);
+int IPCCmpArpTable(void *p1, void *p2);
+void IPCSendIPv4Unicast(IPC *ipc, void *data, UINT size, IP *next_ip);
+IPC_ARP *IPCSearchArpTable(IPC *ipc, IP *ip);
+void IPCSendIPv4WithDestMacAddr(IPC *ipc, void *data, UINT size, UCHAR *dest_mac_addr);
+void IPCFlushArpTable(IPC *ipc);
+void IPCFlushArpTableEx(IPC *ipc, UINT64 now);
+void IPCProcessArp(IPC *ipc, BLOCK *b);
+void IPCAssociateOnArpTable(IPC *ipc, IP *ip, UCHAR *mac_address);
+bool IsValidUnicastMacAddress(UCHAR *mac);
+bool IsValidUnicastIPAddress4(IP *ip);
+bool IsValidUnicastIPAddressUINT4(UINT ip);
+DHCPV4_DATA *IPCSendDhcpRequest(IPC *ipc, IP *dest_ip, UINT tran_id, DHCP_OPTION_LIST *opt, UINT expecting_code, UINT timeout, TUBE *discon_poll_tube);
+BUF *IPCBuildDhcpRequest(IPC *ipc, IP *dest_ip, UINT tran_id, DHCP_OPTION_LIST *opt);
+BUF *IPCBuildDhcpRequestOptions(IPC *ipc, DHCP_OPTION_LIST *opt);
+bool IPCDhcpAllocateIP(IPC *ipc, DHCP_OPTION_LIST *opt, TUBE *discon_poll_tube);
+bool IPCDhcpAllocateIPEx(IPC *ipc, DHCP_OPTION_LIST *opt, TUBE *discon_poll_tube, bool openvpn_compatible);
+bool IPCDhcpRequestInformIP(IPC *ipc, DHCP_OPTION_LIST *opt, TUBE *discon_poll_tube, IP *client_ip);
+void IPCDhcpRenewIP(IPC *ipc, IP *dhcp_server);
+void IPCDhcpFreeIP(IPC *ipc, IP *dhcp_server);
+IPC_ASYNC *NewIPCAsync(CEDAR *cedar, IPC_PARAM *param, SOCK_EVENT *sock_event);
+void IPCAsyncThreadProc(THREAD *thread, void *param);
+void FreeIPCAsync(IPC_ASYNC *a);
+
+bool ParseAndExtractMsChapV2InfoFromPassword(IPC_MSCHAP_V2_AUTHINFO *d, char *password);
+
+#endif // IPSEC_IPC
+
+
+
+
+// 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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