/[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 60 by jsorg71, Sun Jul 14 04:29:21 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, uint8 *client_rsa)  licence_generate_keys(uint8 * client_key, uint8 * server_key, uint8 * client_rsa)
36  {  {
37          uint8 session_key[48];          uint8 session_key[48];
38          uint8 temp_hash[48];          uint8 temp_hash[48];
# Line 49  licence_generate_keys(uint8 *client_key, Line 49  licence_generate_keys(uint8 *client_key,
49  }  }
50    
51  static void  static void
52  licence_generate_hwid(uint8 *hwid)  licence_generate_hwid(uint8 * hwid)
53  {  {
54          buf_out_uint32(hwid, 2);          buf_out_uint32(hwid, 2);
55          strncpy(hwid + 4, hostname, LICENCE_HWID_SIZE - 4);          strncpy((char *) (hwid + 4), hostname, LICENCE_HWID_SIZE - 4);
56  }  }
57    
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 = 16 + SEC_RANDOM_SIZE + SEC_MODULUS_SIZE + SEC_PADDING_SIZE          uint16 length =
65                          + licence_size + LICENCE_HWID_SIZE + LICENCE_SIGNATURE_SIZE;                  16 + SEC_RANDOM_SIZE + SEC_MODULUS_SIZE + SEC_PADDING_SIZE +
66                    licence_size + LICENCE_HWID_SIZE + LICENCE_SIGNATURE_SIZE;
67          STREAM s;          STREAM s;
68    
69          s = sec_init(sec_flags, length + 4);          s = sec_init(sec_flags, length + 4);
# Line 97  licence_present(uint8 *client_random, ui Line 97  licence_present(uint8 *client_random, ui
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 162  licence_process_demand(STREAM s) Line 161  licence_process_demand(STREAM s)
161    
162          /* Generate a signature for the HWID buffer */          /* Generate a signature for the HWID buffer */
163          licence_generate_hwid(hwid);          licence_generate_hwid(hwid);
164          sec_sign(signature, licence_sign_key, 16, hwid, sizeof(hwid));          sec_sign(signature, 16, licence_sign_key, 16, hwid, sizeof(hwid));
165    
166          /* Now encrypt the HWID */          /* Now encrypt the HWID */
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    
174  /* Send an authentication response packet */  /* Send an authentication response packet */
175  static void  static void
176  licence_send_authresp(uint8 *token, uint8 *crypt_hwid, uint8 *signature)  licence_send_authresp(uint8 * token, uint8 * crypt_hwid, uint8 * signature)
177  {  {
178          uint32 sec_flags = SEC_LICENCE_NEG;          uint32 sec_flags = SEC_LICENCE_NEG;
179          uint16 length = 58;          uint16 length = 58;
# Line 202  licence_send_authresp(uint8 *token, uint Line 200  licence_send_authresp(uint8 *token, uint
200    
201  /* Parse an authentication request packet */  /* Parse an authentication request packet */
202  static BOOL  static BOOL
203  licence_parse_authreq(STREAM s, uint8 **token, uint8 **signature)  licence_parse_authreq(STREAM s, uint8 ** token, uint8 ** signature)
204  {  {
205          uint16 tokenlen;          uint16 tokenlen;
206    
# Line 226  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 245  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, 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)
# Line 280  licence_process_issue(STREAM s) Line 276  licence_process_issue(STREAM s)
276                  return;                  return;
277    
278          licence_issued = True;          licence_issued = True;
279          save_licence(s->p, length-2);          save_licence(s->p, length - 2);
280  }  }
281    
282  /* Process a licence packet */  /* Process a licence packet */
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