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 |
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]; |
59 |
strncpy((char *) (hwid + 4), hostname, LICENCE_HWID_SIZE - 4); |
strncpy((char *) (hwid + 4), hostname, LICENCE_HWID_SIZE - 4); |
60 |
} |
} |
61 |
|
|
|
#ifdef SAVE_LICENCE |
|
62 |
/* Present an existing licence to the server */ |
/* Present an existing licence to the server */ |
63 |
static void |
static void |
64 |
licence_present(uint8 * client_random, uint8 * rsa_data, |
licence_present(uint8 * client_random, uint8 * rsa_data, |
98 |
s_mark_end(s); |
s_mark_end(s); |
99 |
sec_send(s, sec_flags); |
sec_send(s, sec_flags); |
100 |
} |
} |
|
#endif |
|
101 |
|
|
102 |
/* Send a licence request packet */ |
/* Send a licence request packet */ |
103 |
static void |
static void |
141 |
licence_process_demand(STREAM s) |
licence_process_demand(STREAM s) |
142 |
{ |
{ |
143 |
uint8 null_data[SEC_MODULUS_SIZE]; |
uint8 null_data[SEC_MODULUS_SIZE]; |
|
uint8 hwid[LICENCE_HWID_SIZE]; |
|
|
uint8 signature[LICENCE_SIGNATURE_SIZE]; |
|
144 |
uint8 *server_random; |
uint8 *server_random; |
145 |
|
uint8 signature[LICENCE_SIGNATURE_SIZE]; |
146 |
|
uint8 hwid[LICENCE_HWID_SIZE]; |
147 |
uint8 *licence_data; |
uint8 *licence_data; |
148 |
int licence_size; |
int licence_size; |
149 |
RC4_KEY crypt_key; |
RC4_KEY crypt_key; |
156 |
memset(null_data, 0, sizeof(null_data)); |
memset(null_data, 0, sizeof(null_data)); |
157 |
licence_generate_keys(null_data, server_random, null_data); |
licence_generate_keys(null_data, server_random, null_data); |
158 |
|
|
|
#ifdef SAVE_LICENCE |
|
159 |
licence_size = load_licence(&licence_data); |
licence_size = load_licence(&licence_data); |
160 |
if (licence_size != -1) |
if (licence_size != -1) |
161 |
{ |
{ |
171 |
xfree(licence_data); |
xfree(licence_data); |
172 |
return; |
return; |
173 |
} |
} |
|
#endif |
|
174 |
|
|
175 |
licence_send_request(null_data, null_data, username, hostname); |
licence_send_request(null_data, null_data, username, hostname); |
176 |
} |
} |
248 |
memcpy(sealed_buffer + LICENCE_TOKEN_SIZE, hwid, LICENCE_HWID_SIZE); |
memcpy(sealed_buffer + LICENCE_TOKEN_SIZE, hwid, LICENCE_HWID_SIZE); |
249 |
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)); |
250 |
|
|
|
/* Deliberately break signature if licencing disabled */ |
|
|
if (!licence) |
|
|
memset(out_sig, 0, sizeof(out_sig)); |
|
|
|
|
251 |
/* Now encrypt the HWID */ |
/* Now encrypt the HWID */ |
252 |
RC4_set_key(&crypt_key, 16, licence_key); |
RC4_set_key(&crypt_key, 16, licence_key); |
253 |
RC4(&crypt_key, LICENCE_HWID_SIZE, hwid, crypt_hwid); |
RC4(&crypt_key, LICENCE_HWID_SIZE, hwid, crypt_hwid); |
276 |
return; |
return; |
277 |
|
|
278 |
licence_issued = True; |
licence_issued = True; |
|
|
|
|
#ifdef SAVE_LICENCE |
|
279 |
save_licence(s->p, length - 2); |
save_licence(s->p, length - 2); |
|
#endif |
|
280 |
} |
} |
281 |
|
|
282 |
/* Process a licence packet */ |
/* Process a licence packet */ |
291 |
switch (tag) |
switch (tag) |
292 |
{ |
{ |
293 |
case LICENCE_TAG_DEMAND: |
case LICENCE_TAG_DEMAND: |
294 |
|
case LICENCE_TAG_DEMAND_5: |
295 |
licence_process_demand(s); |
licence_process_demand(s); |
296 |
break; |
break; |
297 |
|
|
298 |
case LICENCE_TAG_AUTHREQ: |
case LICENCE_TAG_AUTHREQ: |
299 |
|
case LICENCE_TAG_AUTHREQ_5: |
300 |
licence_process_authreq(s); |
licence_process_authreq(s); |
301 |
break; |
break; |
302 |
|
|
303 |
case LICENCE_TAG_ISSUE: |
case LICENCE_TAG_ISSUE: |
304 |
|
case LICENCE_TAG_ISSUE_5: |
305 |
licence_process_issue(s); |
licence_process_issue(s); |
306 |
break; |
break; |
307 |
|
|
308 |
case LICENCE_TAG_REISSUE: |
case LICENCE_TAG_REISSUE: |
309 |
|
case LICENCE_TAG_REISSUE_5: |
310 |
break; |
break; |
311 |
|
|
312 |
case LICENCE_TAG_RESULT: |
case LICENCE_TAG_RESULT: |
313 |
|
case LICENCE_TAG_RESULT_5: |
314 |
break; |
break; |
315 |
|
|
316 |
default: |
default: |