34 |
#endif |
#endif |
35 |
|
|
36 |
extern char hostname[16]; |
extern char hostname[16]; |
37 |
extern int width; |
extern int g_width; |
38 |
extern int height; |
extern int g_height; |
39 |
extern int keylayout; |
extern int keylayout; |
40 |
extern BOOL encryption; |
extern BOOL g_encryption; |
41 |
extern BOOL g_licence_issued; |
extern BOOL g_licence_issued; |
42 |
extern BOOL use_rdp5; |
extern BOOL g_use_rdp5; |
43 |
extern int server_bpp; |
extern BOOL g_console_session; |
44 |
|
extern int g_server_bpp; |
45 |
extern uint16 mcs_userid; |
extern uint16 mcs_userid; |
46 |
|
extern VCHANNEL g_channels[]; |
47 |
|
extern unsigned int g_num_channels; |
48 |
|
|
49 |
static int rc4_key_len; |
static int rc4_key_len; |
50 |
static RC4_KEY rc4_decrypt_key; |
static RC4_KEY rc4_decrypt_key; |
58 |
static uint8 sec_encrypt_update_key[16]; |
static uint8 sec_encrypt_update_key[16]; |
59 |
static uint8 sec_crypted_random[SEC_MODULUS_SIZE]; |
static uint8 sec_crypted_random[SEC_MODULUS_SIZE]; |
60 |
|
|
61 |
uint16 server_rdp_version = 0; |
uint16 g_server_rdp_version = 0; |
62 |
|
|
63 |
/* |
/* |
64 |
* General purpose 48-byte transformation, using two 32-byte salts (generally, |
* General purpose 48-byte transformation, using two 32-byte salts (generally, |
402 |
static void |
static void |
403 |
sec_out_mcs_data(STREAM s) |
sec_out_mcs_data(STREAM s) |
404 |
{ |
{ |
|
uint16 num_channels = get_num_channels(); |
|
405 |
int hostlen = 2 * strlen(hostname); |
int hostlen = 2 * strlen(hostname); |
406 |
int length = 158 + 76 + 12 + 4 + (CHANNEL_TAGDATA_SIZE * num_channels); |
int length = 158 + 76 + 12 + 4; |
407 |
uint16 i; |
unsigned int i; |
|
rdp5_channel *channel; |
|
408 |
|
|
409 |
if (0 < num_channels) |
if (g_num_channels > 0) |
410 |
{ |
length += g_num_channels * 12 + 8; |
|
length += +4 + 4; |
|
|
} |
|
411 |
|
|
412 |
if (hostlen > 30) |
if (hostlen > 30) |
413 |
hostlen = 30; |
hostlen = 30; |
414 |
|
|
415 |
out_uint16_be(s, 5); /* unknown */ |
/* Generic Conference Control (T.124) ConferenceCreateRequest */ |
416 |
|
out_uint16_be(s, 5); |
417 |
out_uint16_be(s, 0x14); |
out_uint16_be(s, 0x14); |
418 |
out_uint8(s, 0x7c); |
out_uint8(s, 0x7c); |
419 |
out_uint16_be(s, 1); |
out_uint16_be(s, 1); |
426 |
out_uint16_le(s, 0xc001); |
out_uint16_le(s, 0xc001); |
427 |
out_uint8(s, 0); |
out_uint8(s, 0); |
428 |
|
|
429 |
out_uint32_le(s, 0x61637544); /* "Duca" ?! */ |
out_uint32_le(s, 0x61637544); /* OEM ID: "Duca", as in Ducati. */ |
430 |
out_uint16_be(s, ((length - 14) | 0x8000)); /* remaining length */ |
out_uint16_be(s, ((length - 14) | 0x8000)); /* remaining length */ |
431 |
|
|
432 |
/* Client information */ |
/* Client information */ |
433 |
out_uint16_le(s, SEC_TAG_CLI_INFO); |
out_uint16_le(s, SEC_TAG_CLI_INFO); |
434 |
out_uint16_le(s, 212); /* length */ |
out_uint16_le(s, 212); /* length */ |
435 |
out_uint16_le(s, use_rdp5 ? 4 : 1); /* RDP version. 1 == RDP4, 4 == RDP5. */ |
out_uint16_le(s, g_use_rdp5 ? 4 : 1); /* RDP version. 1 == RDP4, 4 == RDP5. */ |
436 |
out_uint16_le(s, 8); |
out_uint16_le(s, 8); |
437 |
out_uint16_le(s, width); |
out_uint16_le(s, g_width); |
438 |
out_uint16_le(s, height); |
out_uint16_le(s, g_height); |
439 |
out_uint16_le(s, 0xca01); |
out_uint16_le(s, 0xca01); |
440 |
out_uint16_le(s, 0xaa03); |
out_uint16_le(s, 0xaa03); |
441 |
out_uint32_le(s, keylayout); |
out_uint32_le(s, keylayout); |
449 |
out_uint32(s, 0); |
out_uint32(s, 0); |
450 |
out_uint32_le(s, 12); |
out_uint32_le(s, 12); |
451 |
out_uint8s(s, 64); /* reserved? 4 + 12 doublewords */ |
out_uint8s(s, 64); /* reserved? 4 + 12 doublewords */ |
452 |
|
out_uint16_le(s, 0xca01); /* colour depth? */ |
|
switch (server_bpp) |
|
|
{ |
|
|
case 8: |
|
|
out_uint16_le(s, 0xca01); |
|
|
break; |
|
|
case 15: |
|
|
out_uint16_le(s, 0xca02); |
|
|
break; |
|
|
case 16: |
|
|
out_uint16_le(s, 0xca03); |
|
|
break; |
|
|
case 24: |
|
|
out_uint16_le(s, 0xca04); |
|
|
break; |
|
|
} |
|
453 |
out_uint16_le(s, 1); |
out_uint16_le(s, 1); |
454 |
|
|
455 |
out_uint32(s, 0); |
out_uint32(s, 0); |
456 |
out_uint8(s, server_bpp); |
out_uint8(s, g_server_bpp); |
457 |
out_uint16_le(s, 0x0700); |
out_uint16_le(s, 0x0700); |
458 |
out_uint8(s, 0); |
out_uint8(s, 0); |
459 |
out_uint32_le(s, 1); |
out_uint32_le(s, 1); |
461 |
|
|
462 |
out_uint16_le(s, SEC_TAG_CLI_4); |
out_uint16_le(s, SEC_TAG_CLI_4); |
463 |
out_uint16_le(s, 12); |
out_uint16_le(s, 12); |
464 |
out_uint32_le(s, 9); |
out_uint32_le(s, g_console_session ? 0xb : 9); |
465 |
out_uint32(s, 0); |
out_uint32(s, 0); |
466 |
|
|
467 |
/* Client encryption settings */ |
/* Client encryption settings */ |
468 |
out_uint16_le(s, SEC_TAG_CLI_CRYPT); |
out_uint16_le(s, SEC_TAG_CLI_CRYPT); |
469 |
out_uint16_le(s, 12); /* length */ |
out_uint16_le(s, 12); /* length */ |
470 |
out_uint32_le(s, encryption ? 0x3 : 0); /* encryption supported, 128-bit supported */ |
out_uint32_le(s, g_encryption ? 0x3 : 0); /* encryption supported, 128-bit supported */ |
471 |
out_uint32(s, 0); /* Unknown */ |
out_uint32(s, 0); /* Unknown */ |
472 |
|
|
473 |
DEBUG_RDP5(("num_channels is %d\n", num_channels)); |
DEBUG_RDP5(("g_num_channels is %d\n", g_num_channels)); |
474 |
if (0 < num_channels) |
if (g_num_channels > 0) |
475 |
{ |
{ |
476 |
out_uint16_le(s, SEC_TAG_CLI_CHANNELS); |
out_uint16_le(s, SEC_TAG_CLI_CHANNELS); |
477 |
out_uint16_le(s, num_channels * CHANNEL_TAGDATA_SIZE + 4 + 4); /* length */ |
out_uint16_le(s, g_num_channels * 12 + 8); /* length */ |
478 |
out_uint32_le(s, num_channels); /* number of virtual channels */ |
out_uint32_le(s, g_num_channels); /* number of virtual channels */ |
479 |
for (i = 0; i < num_channels; i++) |
for (i = 0; i < g_num_channels; i++) |
480 |
{ |
{ |
481 |
channel = find_channel_by_num(i); |
DEBUG_RDP5(("Requesting channel %s\n", g_channels[i].name)); |
482 |
DEBUG_RDP5(("Requesting channel %s\n", channel->name)); |
out_uint8a(s, g_channels[i].name, 8); |
483 |
out_uint8p(s, channel->name, 8); |
out_uint32_be(s, g_channels[i].flags); |
|
out_uint32_be(s, channel->channelflags); |
|
484 |
} |
} |
485 |
} |
} |
486 |
|
|
611 |
} |
} |
612 |
else |
else |
613 |
{ |
{ |
614 |
|
uint32 certcount; |
615 |
|
|
616 |
DEBUG_RDP5(("We're going for the RDP5-style encryption\n")); |
DEBUG_RDP5(("We're going for the RDP5-style encryption\n")); |
617 |
in_uint8s(s, 4); /* Number of certificates */ |
in_uint32_le(s, certcount); /* Number of certificates */ |
618 |
|
|
619 |
|
if (certcount < 2) |
620 |
|
{ |
621 |
|
error("Server didn't send enough X509 certificates\n"); |
622 |
|
return False; |
623 |
|
} |
624 |
|
|
625 |
|
for (; certcount > 2; certcount--) |
626 |
|
{ /* ignore all the certificates between the root and the signing CA */ |
627 |
|
uint32 ignorelen; |
628 |
|
X509 *ignorecert; |
629 |
|
|
630 |
|
DEBUG_RDP5(("Ignored certs left: %d\n", certcount)); |
631 |
|
|
632 |
|
in_uint32_le(s, ignorelen); |
633 |
|
DEBUG_RDP5(("Ignored Certificate length is %d\n", ignorelen)); |
634 |
|
ignorecert = d2i_X509(NULL, &(s->p), ignorelen); |
635 |
|
|
636 |
|
if (ignorecert == NULL) |
637 |
|
{ /* XXX: error out? */ |
638 |
|
DEBUG_RDP5(("got a bad cert: this will probably screw up the rest of the communication\n")); |
639 |
|
} |
640 |
|
|
641 |
|
#ifdef WITH_DEBUG_RDP5 |
642 |
|
DEBUG_RDP5(("cert #%d (ignored):\n", certcount)); |
643 |
|
X509_print_fp(stdout, ignorecert); |
644 |
|
#endif |
645 |
|
} |
646 |
|
|
647 |
/* Do da funky X.509 stuffy |
/* Do da funky X.509 stuffy |
648 |
|
|
654 |
*/ |
*/ |
655 |
|
|
656 |
in_uint32_le(s, cacert_len); |
in_uint32_le(s, cacert_len); |
657 |
|
DEBUG_RDP5(("CA Certificate length is %d\n", cacert_len)); |
658 |
cacert = d2i_X509(NULL, &(s->p), cacert_len); |
cacert = d2i_X509(NULL, &(s->p), cacert_len); |
659 |
/* Note: We don't need to move s->p here - d2i_X509 is |
/* Note: We don't need to move s->p here - d2i_X509 is |
660 |
"kind" enough to do it for us */ |
"kind" enough to do it for us */ |
675 |
*/ |
*/ |
676 |
|
|
677 |
in_uint32_le(s, cert_len); |
in_uint32_le(s, cert_len); |
678 |
|
DEBUG_RDP5(("Certificate length is %d\n", cert_len)); |
679 |
server_cert = d2i_X509(NULL, &(s->p), cert_len); |
server_cert = d2i_X509(NULL, &(s->p), cert_len); |
680 |
if (NULL == server_cert) |
if (NULL == server_cert) |
681 |
{ |
{ |
716 |
|
|
717 |
DEBUG(("Generating client random\n")); |
DEBUG(("Generating client random\n")); |
718 |
/* Generate a client random, and hence determine encryption keys */ |
/* Generate a client random, and hence determine encryption keys */ |
719 |
// This is what the MS client do: |
/* This is what the MS client do: */ |
720 |
memset(inr, 0, SEC_RANDOM_SIZE); |
memset(inr, 0, SEC_RANDOM_SIZE); |
721 |
/* *ARIGL!* Plaintext attack, anyone? |
/* *ARIGL!* Plaintext attack, anyone? |
722 |
I tried doing: |
I tried doing: |
753 |
static void |
static void |
754 |
sec_process_srv_info(STREAM s) |
sec_process_srv_info(STREAM s) |
755 |
{ |
{ |
756 |
in_uint16_le(s, server_rdp_version); |
in_uint16_le(s, g_server_rdp_version); |
757 |
DEBUG_RDP5(("Server RDP version is %d\n", server_rdp_version)); |
DEBUG_RDP5(("Server RDP version is %d\n", g_server_rdp_version)); |
758 |
|
if (1 == g_server_rdp_version) |
759 |
|
{ |
760 |
|
g_use_rdp5 = 0; |
761 |
|
g_server_bpp = 8; |
762 |
|
} |
763 |
} |
} |
764 |
|
|
765 |
|
|
771 |
uint8 *next_tag; |
uint8 *next_tag; |
772 |
uint8 len; |
uint8 len; |
773 |
|
|
774 |
in_uint8s(s, 21); /* header (T.124 stuff, probably) */ |
in_uint8s(s, 21); /* header (T.124 ConferenceCreateResponse) */ |
775 |
in_uint8(s, len); |
in_uint8(s, len); |
776 |
if (len & 0x80) |
if (len & 0x80) |
777 |
in_uint8(s, len); |
in_uint8(s, len); |
792 |
sec_process_srv_info(s); |
sec_process_srv_info(s); |
793 |
break; |
break; |
794 |
|
|
|
case SEC_TAG_SRV_3: |
|
|
break; |
|
|
|
|
795 |
case SEC_TAG_SRV_CRYPT: |
case SEC_TAG_SRV_CRYPT: |
796 |
sec_process_crypt_info(s); |
sec_process_crypt_info(s); |
797 |
break; |
break; |
798 |
|
|
799 |
|
case SEC_TAG_SRV_CHANNELS: |
800 |
|
/* FIXME: We should parse this information and |
801 |
|
use it to map RDP5 channels to MCS |
802 |
|
channels */ |
803 |
|
break; |
804 |
|
|
805 |
default: |
default: |
806 |
unimpl("response tag 0x%x\n", tag); |
unimpl("response tag 0x%x\n", tag); |
807 |
} |
} |
820 |
|
|
821 |
while ((s = mcs_recv(&channel)) != NULL) |
while ((s = mcs_recv(&channel)) != NULL) |
822 |
{ |
{ |
823 |
if (encryption || !g_licence_issued) |
if (g_encryption || !g_licence_issued) |
824 |
{ |
{ |
825 |
in_uint32_le(s, sec_flags); |
in_uint32_le(s, sec_flags); |
826 |
|
|
|
if (sec_flags & SEC_LICENCE_NEG) |
|
|
{ |
|
|
if (sec_flags & SEC_ENCRYPT) |
|
|
{ |
|
|
DEBUG_RDP5(("Encrypted license detected\n")); |
|
|
} |
|
|
licence_process(s); |
|
|
continue; |
|
|
} |
|
|
|
|
827 |
if (sec_flags & SEC_ENCRYPT) |
if (sec_flags & SEC_ENCRYPT) |
828 |
{ |
{ |
829 |
in_uint8s(s, 8); /* signature */ |
in_uint8s(s, 8); /* signature */ |
830 |
sec_decrypt(s->p, s->end - s->p); |
sec_decrypt(s->p, s->end - s->p); |
831 |
} |
} |
832 |
|
|
833 |
|
if (sec_flags & SEC_LICENCE_NEG) |
834 |
|
{ |
835 |
|
licence_process(s); |
836 |
|
continue; |
837 |
|
} |
838 |
} |
} |
839 |
|
|
840 |
if (MCS_GLOBAL_CHANNEL == channel) |
if (channel != MCS_GLOBAL_CHANNEL) |
841 |
{ |
{ |
842 |
return s; |
channel_process(s, channel); |
843 |
|
continue; |
844 |
} |
} |
|
else |
|
|
rdp5_process_channel(s, channel); |
|
845 |
|
|
846 |
|
return s; |
847 |
} |
} |
848 |
|
|
849 |
return NULL; |
return NULL; |
863 |
if (!mcs_connect(server, &mcs_data, username)) |
if (!mcs_connect(server, &mcs_data, username)) |
864 |
return False; |
return False; |
865 |
|
|
866 |
// sec_process_mcs_data(&mcs_data); |
/* sec_process_mcs_data(&mcs_data); */ |
867 |
if (encryption) |
if (g_encryption) |
868 |
sec_establish_key(); |
sec_establish_key(); |
869 |
xfree(mcs_data.data); |
xfree(mcs_data.data); |
870 |
return True; |
return True; |