/[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 77 by astrand, Mon Jul 29 20:17:10 2002 UTC revision 82 by astrand, Tue Jul 30 07:18:48 2002 UTC
# Line 32  BOOL licence_issued = False; Line 32  BOOL licence_issued = False;
32    
33  /* Generate a session key and RC4 keys, given client and server randoms */  /* Generate a session key and RC4 keys, given client and server randoms */
34  static void  static void
35  licence_generate_keys(uint8 * client_key, uint8 * server_key,  licence_generate_keys(uint8 * client_key, uint8 * server_key, uint8 * client_rsa)
                       uint8 * client_rsa)  
36  {  {
37          uint8 session_key[48];          uint8 session_key[48];
38          uint8 temp_hash[48];          uint8 temp_hash[48];
# Line 59  licence_generate_hwid(uint8 * hwid) Line 58  licence_generate_hwid(uint8 * hwid)
58  /* Present an existing licence to the server */  /* Present an existing licence to the server */
59  static void  static void
60  licence_present(uint8 * client_random, uint8 * rsa_data,  licence_present(uint8 * client_random, uint8 * rsa_data,
61                  uint8 * licence_data, int licence_size,                  uint8 * licence_data, int licence_size, uint8 * hwid, uint8 * signature)
                 uint8 * hwid, uint8 * signature)  
62  {  {
63          uint32 sec_flags = SEC_LICENCE_NEG;          uint32 sec_flags = SEC_LICENCE_NEG;
64          uint16 length =          uint16 length =
# Line 99  licence_present(uint8 * client_random, u Line 97  licence_present(uint8 * client_random, u
97    
98  /* Send a licence request packet */  /* Send a licence request packet */
99  static void  static void
100  licence_send_request(uint8 * client_random, uint8 * rsa_data,  licence_send_request(uint8 * client_random, uint8 * rsa_data, char *user, char *host)
                      char *user, char *host)  
101  {  {
102          uint32 sec_flags = SEC_LICENCE_NEG;          uint32 sec_flags = SEC_LICENCE_NEG;
103          uint16 userlen = strlen(user) + 1;          uint16 userlen = strlen(user) + 1;
# Line 158  licence_process_demand(STREAM s) Line 155  licence_process_demand(STREAM s)
155          licence_size = load_licence(&licence_data);          licence_size = load_licence(&licence_data);
156          if (licence_size == -1)          if (licence_size == -1)
157          {          {
158                  licence_send_request(null_data, null_data, username,                  licence_send_request(null_data, null_data, username, hostname);
                                      hostname);  
159                  return;                  return;
160          }          }
161    
# Line 171  licence_process_demand(STREAM s) Line 167  licence_process_demand(STREAM s)
167          RC4_set_key(&crypt_key, 16, licence_key);          RC4_set_key(&crypt_key, 16, licence_key);
168          RC4(&crypt_key, sizeof(hwid), hwid, hwid);          RC4(&crypt_key, sizeof(hwid), hwid, hwid);
169    
170          licence_present(null_data, null_data, licence_data, licence_size,          licence_present(null_data, null_data, licence_data, licence_size, hwid, signature);
                         hwid, signature);  
171          xfree(licence_data);          xfree(licence_data);
172  }  }
173    
# Line 229  static void Line 224  static void
224  licence_process_authreq(STREAM s)  licence_process_authreq(STREAM s)
225  {  {
226          uint8 *in_token, *in_sig;          uint8 *in_token, *in_sig;
227          uint8 out_token[LICENCE_TOKEN_SIZE],          uint8 out_token[LICENCE_TOKEN_SIZE], decrypt_token[LICENCE_TOKEN_SIZE];
                 decrypt_token[LICENCE_TOKEN_SIZE];  
228          uint8 hwid[LICENCE_HWID_SIZE], crypt_hwid[LICENCE_HWID_SIZE];          uint8 hwid[LICENCE_HWID_SIZE], crypt_hwid[LICENCE_HWID_SIZE];
229          uint8 sealed_buffer[LICENCE_TOKEN_SIZE + LICENCE_HWID_SIZE];          uint8 sealed_buffer[LICENCE_TOKEN_SIZE + LICENCE_HWID_SIZE];
230          uint8 out_sig[LICENCE_SIGNATURE_SIZE];          uint8 out_sig[LICENCE_SIGNATURE_SIZE];
# Line 248  licence_process_authreq(STREAM s) Line 242  licence_process_authreq(STREAM s)
242          licence_generate_hwid(hwid);          licence_generate_hwid(hwid);
243          memcpy(sealed_buffer, decrypt_token, LICENCE_TOKEN_SIZE);          memcpy(sealed_buffer, decrypt_token, LICENCE_TOKEN_SIZE);
244          memcpy(sealed_buffer + LICENCE_TOKEN_SIZE, hwid, LICENCE_HWID_SIZE);          memcpy(sealed_buffer + LICENCE_TOKEN_SIZE, hwid, LICENCE_HWID_SIZE);
245          sec_sign(out_sig, 16, licence_sign_key, 16,          sec_sign(out_sig, 16, licence_sign_key, 16, sealed_buffer, sizeof(sealed_buffer));
                  sealed_buffer, sizeof(sealed_buffer));  
246    
247          /* Deliberately break signature if licencing disabled */          /* Deliberately break signature if licencing disabled */
248          if (!licence)          if (!licence)
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