src/sip-ntlm.h

   1 /**
   2  * @file sip-ntlm.h
   3  *
   4  * pidgin-sipe
   5  *
   6  * Copyright (C) 2008 Novell, Inc.
   7  * Copyright (C) 2005, Thomas Butter <butter@uni-mannheim.de>
   8  * Modify        2007, Anibal Avelar <avelar@gmail.com>
   9  *
  10  * Implemented with reference to the follow documentation:
  11  *   - http://davenport.sourceforge.net/ntlm.html
  12  *   - MS-NLMP: http://msdn.microsoft.com/en-us/library/cc207842.aspx
  13  *   - MS-SIP : http://msdn.microsoft.com/en-us/library/cc246115.aspx
  14  *
  15  * This program is free software; you can redistribute it and/or modify
  16  * it under the terms of the GNU General Public License as published by
  17  * the Free Software Foundation; either version 2 of the License, or
  18  * (at your option) any later version.
  19  *
  20  * This program is distributed in the hope that it will be useful,
  21  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  22  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  23  * GNU General Public License for more details.
  24  *
  25  * You should have received a copy of the GNU General Public License
  26  * along with this program; if not, write to the Free Software
  27  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  28  */
  29
  30 #ifndef _PURPLE_NTLM_SIPE_H
  31 #define _PURPLE_NTLM_SIPE_H
  32
  33 /* Negotiate flag required in connectionless NTLM
  34  *   0x00000001 = NTLMSSP_NEGOTIATE_UNICODE     (A)
  35  *   0x00000010 = NTLMSSP_NEGOTIATE_SIGN        (D)
  36  *   0x00000040 = NTLMSSP_NEGOTIATE_DATAGRAM    (F)
  37  *   0x00000200 = NTLMSSP_NEGOTIATE_NTLM        (H)
  38  *   0x00008000 = NTLMSSP_NEGOTIATE_ALWAYS_SIGN (M)
  39  *   0x40000000 = NTLMSSP_NEGOTIATE_KEY_EXCH    (W)
  40  */
  41 #define NEGOTIATE_FLAGS 0x40008251
  42
  43 #define NTLMSSP_NT_OR_LM_KEY_LEN 24
  44 #define NTLMSSP_SESSION_KEY_LEN  16
  45 #define MD4_DIGEST_LEN 16
  46
  47 static char SIPE_DEFAULT_CODESET[] = "ANSI_X3.4-1968";
  48
  49 /**
  50  * Parses the ntlm type 2 message
  51  *
  52  * @param challenge String containing the base64 encoded challenge message
  53  * @return The nonce for use in message authenticate
  54  */
  55 gchar *purple_ntlm_parse_challenge(gchar *challenge, guint32 *flags);
  56
  57 /**
  58  * Generates a authenticate message
  59  *
  60  * @param username The username
  61  * @param passw The password
  62  * @param hostname The hostname
  63  * @param domain The domain to authenticate against
  64  * @param nonce The nonce returned by purple_ntlm_parse_challenge
  65  * @param flags Pointer to the flags returned by purple_ntlm_parse_challenge
  66  * @return A base64 encoded authenticate message
  67  */
  68 gchar *purple_ntlm_gen_authenticate(const gchar **ntlm_key, const gchar *username, const gchar *passw, const gchar *hostname, const gchar *domain, const guint8 *nonce, guint32 *flags);
  69
  70 gchar * purple_ntlm_sipe_signature_make (char * msg, char * signing_key);
  71
  72 gchar * purple_ntlm_gen_signature (char * buf, char * signing_key, guint32 random_pad, long sequence, int key_len);
  73
  74
  75 gboolean purple_ntlm_verify_signature (char * a, char * b);
  76
  77 #endif /* _PURPLE_NTLM_SIPE_H */