/[rdesktop]/sourceforge.net/trunk/rdesktop/licence.c
This is repository of my old source code which isn't updated any more. Go to git.rot13.org for current projects!
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Diff of /sourceforge.net/trunk/rdesktop/licence.c

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revision 159 by matthewc, Sun Sep 15 12:36:55 2002 UTC revision 293 by astrand, Tue Jan 21 20:22:44 2003 UTC
# Line 1  Line 1 
1  /*  /*
2     rdesktop: A Remote Desktop Protocol client.     rdesktop: A Remote Desktop Protocol client.
3     RDP licensing negotiation     RDP licensing negotiation
4     Copyright (C) Matthew Chapman 1999-2001     Copyright (C) Matthew Chapman 1999-2002
5        
6     This program is free software; you can redistribute it and/or modify     This program is free software; you can redistribute it and/or modify
7     it under the terms of the GNU General Public License as published by     it under the terms of the GNU General Public License as published by
# Line 19  Line 19 
19  */  */
20    
21  #include "rdesktop.h"  #include "rdesktop.h"
22    
23    #ifdef WITH_OPENSSL
24    #include <openssl/rc4.h>
25    #else
26  #include "crypto/rc4.h"  #include "crypto/rc4.h"
27    #endif
28    
29  extern char username[16];  extern char username[16];
30  extern char hostname[16];  extern char hostname[16];
 extern BOOL licence;  
31    
32  static uint8 licence_key[16];  static uint8 licence_key[16];
33  static uint8 licence_sign_key[16];  static uint8 licence_sign_key[16];
# Line 139  static void Line 143  static void
143  licence_process_demand(STREAM s)  licence_process_demand(STREAM s)
144  {  {
145          uint8 null_data[SEC_MODULUS_SIZE];          uint8 null_data[SEC_MODULUS_SIZE];
         uint8 hwid[LICENCE_HWID_SIZE];  
         uint8 signature[LICENCE_SIGNATURE_SIZE];  
146          uint8 *server_random;          uint8 *server_random;
147    #ifdef SAVE_LICENCE
148            uint8 signature[LICENCE_SIGNATURE_SIZE];
149            uint8 hwid[LICENCE_HWID_SIZE];
150          uint8 *licence_data;          uint8 *licence_data;
151          int licence_size;          int licence_size;
152          RC4_KEY crypt_key;          RC4_KEY crypt_key;
153    #endif
154    
155          /* Retrieve the server random from the incoming packet */          /* Retrieve the server random from the incoming packet */
156          in_uint8p(s, server_random, SEC_RANDOM_SIZE);          in_uint8p(s, server_random, SEC_RANDOM_SIZE);
# Line 248  licence_process_authreq(STREAM s) Line 254  licence_process_authreq(STREAM s)
254          memcpy(sealed_buffer + LICENCE_TOKEN_SIZE, hwid, LICENCE_HWID_SIZE);          memcpy(sealed_buffer + LICENCE_TOKEN_SIZE, hwid, LICENCE_HWID_SIZE);
255          sec_sign(out_sig, 16, licence_sign_key, 16, sealed_buffer, sizeof(sealed_buffer));          sec_sign(out_sig, 16, licence_sign_key, 16, sealed_buffer, sizeof(sealed_buffer));
256    
         /* Deliberately break signature if licencing disabled */  
         if (!licence)  
                 memset(out_sig, 0, sizeof(out_sig));  
   
257          /* Now encrypt the HWID */          /* Now encrypt the HWID */
258          RC4_set_key(&crypt_key, 16, licence_key);          RC4_set_key(&crypt_key, 16, licence_key);
259          RC4(&crypt_key, LICENCE_HWID_SIZE, hwid, crypt_hwid);          RC4(&crypt_key, LICENCE_HWID_SIZE, hwid, crypt_hwid);
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