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// SoftEther VPN Source Code
// Cedar Communication Module
//
// SoftEther VPN Server, Client and Bridge are free software under GPLv2.
//
// Copyright (c) 2012-2016 Daiyuu Nobori.
// Copyright (c) 2012-2016 SoftEther VPN Project, University of Tsukuba, Japan.
// Copyright (c) 2012-2016 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 THIS SOFTWARE IN ANOTHER COUNTRY UNLESS
// YOU HAVE A CONFIRMATION THAT THIS SOFTWARE DOES NOT VIOLATE ANY
// CRIMINAL LAWS OR CIVIL RIGHTS IN THAT PARTICULAR COUNTRY. USING THIS
// SOFTWARE IN OTHER COUNTRIES IS COMPLETELY AT YOUR OWN RISK. THE
// SOFTETHER VPN PROJECT HAS DEVELOPED AND DISTRIBUTED THIS SOFTWARE TO
// COMPLY ONLY WITH THE JAPANESE LAWS AND EXISTING CIVIL RIGHTS INCLUDING
// PATENTS WHICH ARE SUBJECTS APPLY IN JAPAN. OTHER COUNTRIES' LAWS OR
// CIVIL RIGHTS ARE NONE OF OUR CONCERNS NOR RESPONSIBILITIES. WE HAVE
// NEVER INVESTIGATED ANY CRIMINAL REGULATIONS, CIVIL LAWS OR
// INTELLECTUAL PROPERTY RIGHTS INCLUDING PATENTS IN ANY OF OTHER 200+
// COUNTRIES AND TERRITORIES. BY NATURE, THERE ARE 200+ REGIONS IN THE
// WORLD, WITH DIFFERENT LAWS. IT IS IMPOSSIBLE TO VERIFY EVERY
// COUNTRIES' LAWS, REGULATIONS AND CIVIL RIGHTS TO MAKE THE SOFTWARE
// COMPLY WITH ALL COUNTRIES' LAWS BY THE PROJECT. EVEN IF YOU WILL BE
// SUED BY A PRIVATE ENTITY OR BE DAMAGED BY A PUBLIC SERVANT IN YOUR
// COUNTRY, THE DEVELOPERS OF THIS SOFTWARE WILL NEVER BE LIABLE TO
// RECOVER OR COMPENSATE SUCH DAMAGES, CRIMINAL OR CIVIL
// RESPONSIBILITIES. NOTE THAT THIS LINE IS NOT LICENSE RESTRICTION BUT
// JUST A STATEMENT FOR WARNING AND DISCLAIMER.
//
//
// SOURCE CODE CONTRIBUTION
// ------------------------
//
// Your contribution to SoftEther VPN Project is much appreciated.
// Please send patches to us through GitHub.
// Read the SoftEther VPN Patch Acceptance Policy in advance:
// http://www.softether.org/5-download/src/9.patch
//
//
// 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.
//
//
// NO MEMORY OR RESOURCE LEAKS
// ---------------------------
//
// The memory-leaks and resource-leaks verification under the stress
// test has been passed before release this source code.
// Radius.h
// Header of Radius.c
#ifndef RADIUS_H
#define RADIUS_H
#define RADIUS_DEFAULT_PORT 1812 // The default port number
#define RADIUS_RETRY_INTERVAL 500 // Retransmission interval
#define RADIUS_RETRY_TIMEOUT (10 * 1000) // Time-out period
#define RADIUS_INITIAL_EAP_TIMEOUT 1600 // Initial timeout for EAP
// RADIUS attributes
#define RADIUS_ATTRIBUTE_USER_NAME 1
#define RADIUS_ATTRIBUTE_NAS_IP 4
#define RADIUS_ATTRIBUTE_NAS_PORT 5
#define RADIUS_ATTRIBUTE_SERVICE_TYPE 6
#define RADIUS_ATTRIBUTE_FRAMED_PROTOCOL 7
#define RADIUS_ATTRIBUTE_FRAMED_MTU 12
#define RADIUS_ATTRIBUTE_STATE 24
#define RADIUS_ATTRIBUTE_VENDOR_SPECIFIC 26
#define RADIUS_ATTRIBUTE_CALLED_STATION_ID 30
#define RADIUS_ATTRIBUTE_CALLING_STATION_ID 31
#define RADIUS_ATTRIBUTE_NAS_ID 32
#define RADIUS_ATTRIBUTE_PROXY_STATE 33
#define RADIUS_ATTRIBUTE_ACCT_SESSION_ID 44
#define RADIUS_ATTRIBUTE_NAS_PORT_TYPE 61
#define RADIUS_ATTRIBUTE_TUNNEL_TYPE 64
#define RADIUS_ATTRIBUTE_TUNNEL_MEDIUM_TYPE 65
#define RADIUS_ATTRIBUTE_TUNNEL_CLIENT_ENDPOINT 66
#define RADIUS_ATTRIBUTE_TUNNEL_SERVER_ENDPOINT 67
#define RADIUS_ATTRIBUTE_EAP_MESSAGE 79
#define RADIUS_ATTRIBUTE_EAP_AUTHENTICATOR 80
#define RADIUS_ATTRIBUTE_VLAN_ID 81
// RADIUS codes
#define RADIUS_CODE_ACCESS_REQUEST 1
#define RADIUS_CODE_ACCESS_ACCEPT 2
#define RADIUS_CODE_ACCESS_REJECT 3
#define RADIUS_CODE_ACCESS_CHALLENGE 11
// RADIUS vendor ID
#define RADIUS_VENDOR_MICROSOFT 311
// RADIUS MS attributes
#define RADIUS_MS_RAS_VENDOR 9
#define RADIUS_MS_CHAP_CHALLENGE 11
#define RADIUS_MS_VERSION 18
#define RADIUS_MS_CHAP2_RESPONSE 25
#define RADIUS_MS_RAS_CLIENT_NAME 34
#define RADIUS_MS_RAS_CLIENT_VERSION 35
#define RADIUS_MS_NETWORK_ACCESS_SERVER_TYPE 47
#define RADIUS_MS_RAS_CORRELATION 56
// EAP code
#define EAP_CODE_REQUEST 1
#define EAP_CODE_RESPONSE 2
#define EAP_CODE_SUCCESS 3
#define EAP_CODE_FAILURE 4
// EAP type
#define EAP_TYPE_IDENTITY 1
#define EAP_TYPE_LEGACY_NAK 3
#define EAP_TYPE_PEAP 25
#define EAP_TYPE_MS_AUTH 26
// MS-CHAPv2 opcodes
#define EAP_MSCHAPV2_OP_CHALLENGE 1
#define EAP_MSCHAPV2_OP_RESPONSE 2
#define EAP_MSCHAPV2_OP_SUCCESS 3
// EAP-TLS flags
#define EAP_TLS_FLAGS_LEN 0x80
#define EAP_TLS_FLAGS_MORE_FRAGMENTS 0x40
#define EAP_TLS_FLAGS_START 0x20
////////// Modern implementation
#ifdef OS_WIN32
#pragma pack(push, 1)
#endif // OS_WIN32
struct EAP_MESSAGE
{
UCHAR Code;
UCHAR Id;
USHORT Len; // = sizeof(Data) + 5
UCHAR Type;
UCHAR Data[1500];
} GCC_PACKED;
struct EAP_MSCHAPV2_GENERAL
{
UCHAR Code;
UCHAR Id;
USHORT Len; // = sizeof(Data) + 5
UCHAR Type;
UCHAR Chap_Opcode;
} GCC_PACKED;
struct EAP_MSCHAPV2_CHALLENGE
{
UCHAR Code;
UCHAR Id;
USHORT Len; // = sizeof(Data) + 5
UCHAR Type;
UCHAR Chap_Opcode;
UCHAR Chap_Id;
USHORT Chap_Len;
UCHAR Chap_ValueSize; // = 16
UCHAR Chap_ChallengeValue[16];
char Chap_Name[256];
} GCC_PACKED;
struct EAP_MSCHAPV2_RESPONSE
{
UCHAR Code;
UCHAR Id;
USHORT Len; // = sizeof(Data) + 5
UCHAR Type;
UCHAR Chap_Opcode;
UCHAR Chap_Id;
USHORT Chap_Len;
UCHAR Chap_ValueSize; // = 49
UCHAR Chap_PeerChallange[16];
UCHAR Chap_Reserved[8];
UCHAR Chap_NtResponse[24];
UCHAR Chap_Flags;
char Chap_Name[256];
} GCC_PACKED;
struct EAP_MSCHAPV2_SUCCESS_SERVER
{
UCHAR Code;
UCHAR Id;
USHORT Len; // = sizeof(Data) + 5
UCHAR Type;
UCHAR Chap_Opcode;
UCHAR Chap_Id;
USHORT Chap_Len;
char Message[256];
} GCC_PACKED;
struct EAP_MSCHAPV2_SUCCESS_CLIENT
{
UCHAR Code;
UCHAR Id;
USHORT Len; // = sizeof(Data) + 5
UCHAR Type;
UCHAR Chap_Opcode;
} GCC_PACKED;
struct EAP_PEAP
{
UCHAR Code;
UCHAR Id;
USHORT Len; // = sizeof(Data) + 5
UCHAR Type;
UCHAR TlsFlags;
} GCC_PACKED;
#ifdef OS_WIN32
#pragma pack(pop)
#endif // OS_WIN32
struct RADIUS_PACKET
{
UCHAR Code;
UCHAR PacketId;
LIST *AvpList;
UCHAR Authenticator[16];
UINT Parse_EapAuthMessagePos;
UINT Parse_AuthenticatorPos;
EAP_MESSAGE *Parse_EapMessage;
UINT Parse_EapMessage_DataSize;
UINT Parse_StateSize;
UCHAR Parse_State[256];
};
struct RADIUS_AVP
{
UCHAR Type;
UINT VendorId;
UCHAR VendorCode;
UCHAR Padding[3];
UCHAR DataSize;
UCHAR Data[256];
};
struct EAP_CLIENT
{
REF *Ref;
SOCK *UdpSock;
IP ServerIp;
UINT ServerPort;
char SharedSecret[MAX_SIZE];
char ClientIpStr[256];
char Username[MAX_USERNAME_LEN + 1];
UINT ResendTimeout;
UINT GiveupTimeout;
UCHAR TmpBuffer[4096];
UCHAR NextEapId;
UCHAR LastRecvEapId;
bool PeapMode;
UCHAR LastState[256];
UINT LastStateSize;
EAP_MSCHAPV2_CHALLENGE MsChapV2Challenge;
EAP_MSCHAPV2_SUCCESS_SERVER MsChapV2Success;
UCHAR ServerResponse[20];
SSL_PIPE *SslPipe;
UCHAR NextRadiusPacketId;
BUF *PEAP_CurrentReceivingMsg;
UINT PEAP_CurrentReceivingTotalSize;
UCHAR RecvLastCode;
UINT LastRecvVLanId;
};
void FreeRadiusPacket(RADIUS_PACKET *p);
BUF *GenerateRadiusPacket(RADIUS_PACKET *p, char *shared_secret);
RADIUS_PACKET *ParseRadiusPacket(void *data, UINT size);
RADIUS_PACKET *NewRadiusPacket(UCHAR code, UCHAR packet_id);
RADIUS_AVP *NewRadiusAvp(UCHAR type, UINT vendor_id, UCHAR vendor_code, void *data, UINT size);
RADIUS_AVP *GetRadiusAvp(RADIUS_PACKET *p, UCHAR type);
void RadiusTest();
EAP_CLIENT *NewEapClient(IP *server_ip, UINT server_port, char *shared_secret, UINT resend_timeout, UINT giveup_timeout, char *client_ip_str, char *username);
void ReleaseEapClient(EAP_CLIENT *e);
void CleanupEapClient(EAP_CLIENT *e);
bool EapClientSendMsChapv2AuthRequest(EAP_CLIENT *e);
bool EapClientSendMsChapv2AuthClientResponse(EAP_CLIENT *e, UCHAR *client_response, UCHAR *client_challenge);
void EapSetRadiusGeneralAttributes(RADIUS_PACKET *r, EAP_CLIENT *e);
bool EapSendPacket(EAP_CLIENT *e, RADIUS_PACKET *r);
RADIUS_PACKET *EapSendPacketAndRecvResponse(EAP_CLIENT *e, RADIUS_PACKET *r);
bool PeapClientSendMsChapv2AuthRequest(EAP_CLIENT *eap);
bool PeapClientSendMsChapv2AuthClientResponse(EAP_CLIENT *e, UCHAR *client_response, UCHAR *client_challenge);
bool StartPeapClient(EAP_CLIENT *e);
bool StartPeapSslClient(EAP_CLIENT *e);
bool SendPeapRawPacket(EAP_CLIENT *e, UCHAR *peap_data, UINT peap_size);
bool SendPeapPacket(EAP_CLIENT *e, void *msg, UINT msg_size);
bool GetRecvPeapMessage(EAP_CLIENT *e, EAP_MESSAGE *msg);
////////// Classical implementation
struct RADIUS_LOGIN_OPTION
{
bool In_CheckVLanId;
bool In_DenyNoVlanId;
UINT Out_VLanId;
bool Out_IsRadiusLogin;
};
// Function prototype
bool RadiusLogin(CONNECTION *c, char *server, UINT port, UCHAR *secret, UINT secret_size, wchar_t *username, char *password, UINT interval, UCHAR *mschap_v2_server_response_20,
RADIUS_LOGIN_OPTION *opt);
BUF *RadiusEncryptPassword(char *password, UCHAR *random, UCHAR *secret, UINT secret_size);
BUF *RadiusCreateUserName(wchar_t *username);
BUF *RadiusCreateUserPassword(void *data, UINT size);
BUF *RadiusCreateNasId(char *name);
void RadiusAddValue(BUF *b, UCHAR t, UINT v, UCHAR vt, void *data, UINT size);
LIST *RadiusParseOptions(BUF *b);
#endif // RADIUS_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/
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