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libxrdp: work on fips

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This commit is contained in:
Jay Sorg 2014-02-22 22:44:58 -08:00
parent 926cd095fc
commit 8e4520b3c3
4 changed files with 508 additions and 264 deletions
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5
libxrdp/libxrdp.h
View File

@ -116,6 +116,11 @@ struct xrdp_sec
char pri_exp[64];
int channel_code;
int multimon;
char fips_encrypt_key[24];
char fips_decrypt_key[24];
char fips_sign_key[20];
void* encrypt_fips_info;
void* decrypt_fips_info;
};
/* channel */

9
libxrdp/xrdp_mcs.c
View File

@ -1,7 +1,7 @@
/**
* xrdp: A Remote Desktop Protocol server.
*
* Copyright (C) Jay Sorg 2004-2013
* Copyright (C) Jay Sorg 2004-2014
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@ -946,11 +946,12 @@ xrdp_mcs_send(struct xrdp_mcs *self, struct stream *s, int chan)
* Internal help function to close the socket
* @param self
*/
void close_rdp_socket(struct xrdp_mcs *self)
void APP_CC
close_rdp_socket(struct xrdp_mcs *self)
{
if(self->iso_layer->tcp_layer)
if (self->iso_layer->tcp_layer != 0)
{
if(self->iso_layer->tcp_layer->trans)
if (self->iso_layer->tcp_layer->trans != 0)
{
g_tcp_close(self->iso_layer->tcp_layer->trans->sck);
self->iso_layer->tcp_layer->trans->sck = 0 ;

226
libxrdp/xrdp_rdp.c
View File

@ -486,228 +486,6 @@ xrdp_rdp_send_data_update_sync(struct xrdp_rdp *self)
return 0;
}
/*****************************************************************************/
/* http://msdn.microsoft.com/en-us/library/cc240510.aspx
2.2.1.3.2 Client Core Data (TS_UD_CS_CORE) */
static int APP_CC
xrdp_rdp_parse_client_mcs_data_CS_CORE(struct xrdp_rdp* self, struct stream* s)
{
int colorDepth;
int postBeta2ColorDepth;
int highColorDepth;
int supportedColorDepths;
int earlyCapabilityFlags;
in_uint8s(s, 4); /* version */
in_uint16_le(s, self->client_info.width);
in_uint16_le(s, self->client_info.height);
in_uint16_le(s, colorDepth);
g_writeln("colorDepth 0x%4.4x (0xca00 4bpp 0xca01 8bpp)", colorDepth);
switch (colorDepth)
{
case 0xca00: /* RNS_UD_COLOR_4BPP */
self->client_info.bpp = 4;
break;
case 0xca01: /* RNS_UD_COLOR_8BPP */
self->client_info.bpp = 8;
break;
}
in_uint8s(s, 2); /* SASSequence */
in_uint8s(s, 4); /* keyboardLayout */
in_uint8s(s, 4); /* clientBuild */
in_uint8s(s, 32); /* clientName */
in_uint8s(s, 4); /* keyboardType */
in_uint8s(s, 4); /* keyboardSubType */
in_uint8s(s, 4); /* keyboardFunctionKey */
in_uint8s(s, 64); /* imeFileName */
in_uint16_le(s, postBeta2ColorDepth);
g_writeln("postBeta2ColorDepth 0x%4.4x (0xca00 4bpp 0xca01 8bpp "
"0xca02 15bpp 0xca03 16bpp 0xca04 24bpp)", postBeta2ColorDepth);
switch (postBeta2ColorDepth)
{
case 0xca00: /* RNS_UD_COLOR_4BPP */
self->client_info.bpp = 4;
break;
case 0xca01: /* RNS_UD_COLOR_8BPP */
self->client_info.bpp = 8;
break;
case 0xca02: /* RNS_UD_COLOR_16BPP_555 */
self->client_info.bpp = 15;
break;
case 0xca03: /* RNS_UD_COLOR_16BPP_565 */
self->client_info.bpp = 16;
break;
case 0xca04: /* RNS_UD_COLOR_24BPP */
self->client_info.bpp = 24;
break;
}
if (!s_check_rem(s, 2))
{
return 0;
}
in_uint8s(s, 2); /* clientProductId */
if (!s_check_rem(s, 4))
{
return 0;
}
in_uint8s(s, 4); /* serialNumber */
if (!s_check_rem(s, 2))
{
return 0;
}
in_uint16_le(s, highColorDepth);
g_writeln("highColorDepth 0x%4.4x (0x0004 4bpp 0x0008 8bpp 0x000f 15bpp "
"0x0010 16 bpp 0x0018 24bpp)", highColorDepth);
self->client_info.bpp = highColorDepth;
if (!s_check_rem(s, 2))
{
return 0;
}
in_uint16_le(s, supportedColorDepths);
g_writeln("supportedColorDepths 0x%4.4x (0x0001 24bpp 0x0002 16bpp "
"0x0004 15bpp 0x0008 32bpp)", supportedColorDepths);
if (!s_check_rem(s, 2))
{
return 0;
}
in_uint16_le(s, earlyCapabilityFlags);
self->client_info.mcs_early_capability_flags = earlyCapabilityFlags;
g_writeln("earlyCapabilityFlags 0x%4.4x (0x0002 want32)",
earlyCapabilityFlags);
if ((earlyCapabilityFlags & 0x0002) && (supportedColorDepths & 0x0008))
{
self->client_info.bpp = 32;
}
if (!s_check_rem(s, 64))
{
return 0;
}
in_uint8s(s, 64); /* clientDigProductId */
if (!s_check_rem(s, 1))
{
return 0;
}
in_uint8(s, self->client_info.mcs_connection_type); /* connectionType */
g_writeln("got client client connection type 0x%8.8x",
self->client_info.mcs_connection_type);
if (!s_check_rem(s, 1))
{
return 0;
}
in_uint8s(s, 1); /* pad1octet */
if (!s_check_rem(s, 4))
{
return 0;
}
in_uint8s(s, 4); /* serverSelectedProtocol */
if (!s_check_rem(s, 4))
{
return 0;
}
in_uint8s(s, 4); /* desktopPhysicalWidth */
if (!s_check_rem(s, 4))
{
return 0;
}
in_uint8s(s, 4); /* desktopPhysicalHeight */
if (!s_check_rem(s, 2))
{
return 0;
}
in_uint8s(s, 2); /* reserved */
return 0;
}
/*****************************************************************************/
/* TODO: move xrdp_sec.c::xrdp_sec_in_mcs_data here */
static int APP_CC
xrdp_rdp_parse_client_mcs_data(struct xrdp_rdp* self)
{
struct stream* s;
int i;
int header_type;
int length;
char* hold_p;
char* hold_end;
s = &(self->sec_layer->client_mcs_data);
s->p = s->data;
in_uint8s(s, 23);
while (s->p < s->end)
{
if (!s_check_rem(s, 4))
{
g_writeln("xrdp_rdp_parse_client_mcs_data: parse error, bytes "
"left %d", (int)(s->end - s->p));
return 1;
}
hold_p = s->p;
hold_end = s->end;
in_uint16_le(s, header_type);
in_uint16_le(s, length);
g_writeln("type 0x%2.2x len %d", header_type, length);
if (length < 4)
{
g_writeln("xrdp_rdp_parse_client_mcs_data: parse error");
return 1;
}
if (!s_check_rem(s, length - 4))
{
g_writeln("xrdp_rdp_parse_client_mcs_data: parse error");
return 1;
}
s->end = s->p + length;
switch (header_type)
{
case 0xc001: /* CS_CORE */
xrdp_rdp_parse_client_mcs_data_CS_CORE(self, s);
break;
case 0xc002: /* CS_SECURITY */
break;
case 0xc003: /* CS_NET */
break;
case 0xc004: /* CS_CLUSTER */
break;
default:
g_writeln("xrdp_rdp_parse_client_mcs_data: error unknown "
"header type 0x%4.4x", header_type);
break;
}
s->p = hold_p + length;
s->end = hold_end;
}
if (self->client_info.max_bpp > 0)
{
if (self->client_info.bpp > self->client_info.max_bpp)
{
g_writeln("xrdp_rdp_parse_client_mcs_data: client asked for %dbpp "
"connection but configuration is limited to %dbpp",
self->client_info.bpp, self->client_info.max_bpp);
self->client_info.bpp = self->client_info.max_bpp;
}
}
s->p = s->data;
g_writeln("xrdp_rdp_parse_client_mcs_data: client bpp %d",
self->client_info.bpp);
return 0;
}
/*****************************************************************************/
int APP_CC
xrdp_rdp_incoming(struct xrdp_rdp *self)
@ -718,19 +496,15 @@ xrdp_rdp_incoming(struct xrdp_rdp *self)
{
return 1;
}
self->mcs_channel = self->sec_layer->mcs_layer->userid +
MCS_USERCHANNEL_BASE;
xrdp_rdp_parse_client_mcs_data(self);
DEBUG(("out xrdp_rdp_incoming mcs channel %d", self->mcs_channel));
g_strncpy(self->client_info.client_addr,
self->sec_layer->mcs_layer->iso_layer->tcp_layer->trans->addr,
sizeof(self->client_info.client_addr) - 1);
g_strncpy(self->client_info.client_port,
self->sec_layer->mcs_layer->iso_layer->tcp_layer->trans->port,
sizeof(self->client_info.client_port) - 1);
return 0;
}

492
libxrdp/xrdp_sec.c
View File

@ -21,6 +21,12 @@
#include "libxrdp.h"
#include "log.h"
#define LOG_LEVEL 1
#define LLOG(_level, _args) \
do { if (_level < LOG_LEVEL) { g_write _args ; } } while (0)
#define LLOGLN(_level, _args) \
do { if (_level < LOG_LEVEL) { g_writeln _args ; } } while (0)
/* some compilers need unsigned char to avoid warnings */
static tui8 g_pad_54[40] =
{
@ -100,6 +106,83 @@ static tui8 g_lic3[20] =
0xf3, 0x99, 0x00, 0x00
};
static const tui8 g_fips_reverse_table[256] =
{
0x00, 0x80, 0x40, 0xc0, 0x20, 0xa0, 0x60, 0xe0,
0x10, 0x90, 0x50, 0xd0, 0x30, 0xb0, 0x70, 0xf0,
0x08, 0x88, 0x48, 0xc8, 0x28, 0xa8, 0x68, 0xe8,
0x18, 0x98, 0x58, 0xd8, 0x38, 0xb8, 0x78, 0xf8,
0x04, 0x84, 0x44, 0xc4, 0x24, 0xa4, 0x64, 0xe4,
0x14, 0x94, 0x54, 0xd4, 0x34, 0xb4, 0x74, 0xf4,
0x0c, 0x8c, 0x4c, 0xcc, 0x2c, 0xac, 0x6c, 0xec,
0x1c, 0x9c, 0x5c, 0xdc, 0x3c, 0xbc, 0x7c, 0xfc,
0x02, 0x82, 0x42, 0xc2, 0x22, 0xa2, 0x62, 0xe2,
0x12, 0x92, 0x52, 0xd2, 0x32, 0xb2, 0x72, 0xf2,
0x0a, 0x8a, 0x4a, 0xca, 0x2a, 0xaa, 0x6a, 0xea,
0x1a, 0x9a, 0x5a, 0xda, 0x3a, 0xba, 0x7a, 0xfa,
0x06, 0x86, 0x46, 0xc6, 0x26, 0xa6, 0x66, 0xe6,
0x16, 0x96, 0x56, 0xd6, 0x36, 0xb6, 0x76, 0xf6,
0x0e, 0x8e, 0x4e, 0xce, 0x2e, 0xae, 0x6e, 0xee,
0x1e, 0x9e, 0x5e, 0xde, 0x3e, 0xbe, 0x7e, 0xfe,
0x01, 0x81, 0x41, 0xc1, 0x21, 0xa1, 0x61, 0xe1,
0x11, 0x91, 0x51, 0xd1, 0x31, 0xb1, 0x71, 0xf1,
0x09, 0x89, 0x49, 0xc9, 0x29, 0xa9, 0x69, 0xe9,
0x19, 0x99, 0x59, 0xd9, 0x39, 0xb9, 0x79, 0xf9,
0x05, 0x85, 0x45, 0xc5, 0x25, 0xa5, 0x65, 0xe5,
0x15, 0x95, 0x55, 0xd5, 0x35, 0xb5, 0x75, 0xf5,
0x0d, 0x8d, 0x4d, 0xcd, 0x2d, 0xad, 0x6d, 0xed,
0x1d, 0x9d, 0x5d, 0xdd, 0x3d, 0xbd, 0x7d, 0xfd,
0x03, 0x83, 0x43, 0xc3, 0x23, 0xa3, 0x63, 0xe3,
0x13, 0x93, 0x53, 0xd3, 0x33, 0xb3, 0x73, 0xf3,
0x0b, 0x8b, 0x4b, 0xcb, 0x2b, 0xab, 0x6b, 0xeb,
0x1b, 0x9b, 0x5b, 0xdb, 0x3b, 0xbb, 0x7b, 0xfb,
0x07, 0x87, 0x47, 0xc7, 0x27, 0xa7, 0x67, 0xe7,
0x17, 0x97, 0x57, 0xd7, 0x37, 0xb7, 0x77, 0xf7,
0x0f, 0x8f, 0x4f, 0xcf, 0x2f, 0xaf, 0x6f, 0xef,
0x1f, 0x9f, 0x5f, 0xdf, 0x3f, 0xbf, 0x7f, 0xff
};
static const tui8 g_fips_oddparity_table[256] =
{
0x01, 0x01, 0x02, 0x02, 0x04, 0x04, 0x07, 0x07,
0x08, 0x08, 0x0b, 0x0b, 0x0d, 0x0d, 0x0e, 0x0e,
0x10, 0x10, 0x13, 0x13, 0x15, 0x15, 0x16, 0x16,
0x19, 0x19, 0x1a, 0x1a, 0x1c, 0x1c, 0x1f, 0x1f,
0x20, 0x20, 0x23, 0x23, 0x25, 0x25, 0x26, 0x26,
0x29, 0x29, 0x2a, 0x2a, 0x2c, 0x2c, 0x2f, 0x2f,
0x31, 0x31, 0x32, 0x32, 0x34, 0x34, 0x37, 0x37,
0x38, 0x38, 0x3b, 0x3b, 0x3d, 0x3d, 0x3e, 0x3e,
0x40, 0x40, 0x43, 0x43, 0x45, 0x45, 0x46, 0x46,
0x49, 0x49, 0x4a, 0x4a, 0x4c, 0x4c, 0x4f, 0x4f,
0x51, 0x51, 0x52, 0x52, 0x54, 0x54, 0x57, 0x57,
0x58, 0x58, 0x5b, 0x5b, 0x5d, 0x5d, 0x5e, 0x5e,
0x61, 0x61, 0x62, 0x62, 0x64, 0x64, 0x67, 0x67,
0x68, 0x68, 0x6b, 0x6b, 0x6d, 0x6d, 0x6e, 0x6e,
0x70, 0x70, 0x73, 0x73, 0x75, 0x75, 0x76, 0x76,
0x79, 0x79, 0x7a, 0x7a, 0x7c, 0x7c, 0x7f, 0x7f,
0x80, 0x80, 0x83, 0x83, 0x85, 0x85, 0x86, 0x86,
0x89, 0x89, 0x8a, 0x8a, 0x8c, 0x8c, 0x8f, 0x8f,
0x91, 0x91, 0x92, 0x92, 0x94, 0x94, 0x97, 0x97,
0x98, 0x98, 0x9b, 0x9b, 0x9d, 0x9d, 0x9e, 0x9e,
0xa1, 0xa1, 0xa2, 0xa2, 0xa4, 0xa4, 0xa7, 0xa7,
0xa8, 0xa8, 0xab, 0xab, 0xad, 0xad, 0xae, 0xae,
0xb0, 0xb0, 0xb3, 0xb3, 0xb5, 0xb5, 0xb6, 0xb6,
0xb9, 0xb9, 0xba, 0xba, 0xbc, 0xbc, 0xbf, 0xbf,
0xc1, 0xc1, 0xc2, 0xc2, 0xc4, 0xc4, 0xc7, 0xc7,
0xc8, 0xc8, 0xcb, 0xcb, 0xcd, 0xcd, 0xce, 0xce,
0xd0, 0xd0, 0xd3, 0xd3, 0xd5, 0xd5, 0xd6, 0xd6,
0xd9, 0xd9, 0xda, 0xda, 0xdc, 0xdc, 0xdf, 0xdf,
0xe0, 0xe0, 0xe3, 0xe3, 0xe5, 0xe5, 0xe6, 0xe6,
0xe9, 0xe9, 0xea, 0xea, 0xec, 0xec, 0xef, 0xef,
0xf1, 0xf1, 0xf2, 0xf2, 0xf4, 0xf4, 0xf7, 0xf7,
0xf8, 0xf8, 0xfb, 0xfb, 0xfd, 0xfd, 0xfe, 0xfe
};
static const tui8 g_fips_ivec[8] =
{
0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF
};
/*****************************************************************************/
static void APP_CC
hex_str_to_bin(char *in, char *out, int out_len)
@ -145,8 +228,8 @@ xrdp_sec_create(struct xrdp_rdp *owner, struct trans *trans, int crypt_level,
DEBUG((" in xrdp_sec_create"));
self = (struct xrdp_sec *)g_malloc(sizeof(struct xrdp_sec), 1);
self->rdp_layer = owner;
self->crypt_method = CRYPT_METHOD_40BIT;
self->crypt_level = CRYPT_LEVEL_LOW;
self->crypt_method = CRYPT_METHOD_NONE;
self->crypt_level = CRYPT_LEVEL_NONE;
switch (crypt_level)
{
case 1: /* low */
@ -207,6 +290,8 @@ xrdp_sec_delete(struct xrdp_sec *self)
xrdp_mcs_delete(self->mcs_layer);
ssl_rc4_info_delete(self->decrypt_rc4_info); /* TODO clear all data */
ssl_rc4_info_delete(self->encrypt_rc4_info); /* TODO clear all data */
ssl_des3_info_delete(self->decrypt_fips_info);
ssl_des3_info_delete(self->encrypt_fips_info);
g_free(self->client_mcs_data.data);
g_free(self->server_mcs_data.data);
/* Crypto information must always be cleared */
@ -224,7 +309,11 @@ xrdp_sec_init(struct xrdp_sec *self, struct stream *s)
return 1;
}
if (self->crypt_level > 1)
if (self->crypt_level == CRYPT_LEVEL_FIPS)
{
s_push_layer(s, sec_hdr, 4 + 4 + 8);
}
else if (self->crypt_level > CRYPT_LEVEL_LOW)
{
s_push_layer(s, sec_hdr, 4 + 8);
}
@ -287,6 +376,12 @@ xrdp_sec_update(char *key, char *update_key, int key_len)
/*****************************************************************************/
static void APP_CC
xrdp_sec_decrypt(struct xrdp_sec *self, char *data, int len)
{
if (self->crypt_method == CRYPT_METHOD_FIPS)
{
ssl_des3_decrypt(self->decrypt_fips_info, len, data, data);
}
else
{
if (self->decrypt_use_count == 4096)
{
@ -300,10 +395,17 @@ xrdp_sec_decrypt(struct xrdp_sec *self, char *data, int len)
ssl_rc4_crypt(self->decrypt_rc4_info, data, len);
self->decrypt_use_count++;
}
}
/*****************************************************************************/
static void APP_CC
xrdp_sec_encrypt(struct xrdp_sec *self, char *data, int len)
{
if (self->crypt_method == CRYPT_METHOD_FIPS)
{
ssl_des3_encrypt(self->encrypt_fips_info, len, data, data);
}
else
{
if (self->encrypt_use_count == 4096)
{
@ -317,6 +419,7 @@ xrdp_sec_encrypt(struct xrdp_sec *self, char *data, int len)
ssl_rc4_crypt(self->encrypt_rc4_info, data, len);
self->encrypt_use_count++;
}
}
/*****************************************************************************/
static int APP_CC
@ -698,6 +801,50 @@ xrdp_sec_hash_16(char *out, char *in, char *salt1, char *salt2)
ssl_md5_info_delete(md5_info);
}
/*****************************************************************************/
static void APP_CC
fips_expand_key_bits(const char *in, char *out)
{
tui8 buf[32];
tui8 c;
int i;
int b;
int p;
int r;
/* reverse every byte in the key */
for (i = 0; i < 21; i++)
{
c = in[i];
buf[i] = g_fips_reverse_table[c];
}
/* insert a zero-bit after every 7th bit */
for (i = 0, b = 0; i < 24; i++, b += 7)
{
p = b / 8;
r = b % 8;
if (r == 0)
{
out[i] = buf[p] & 0xfe;
}
else
{
/* c is accumulator */
c = buf[p] << r;
c |= buf[p + 1] >> (8 - r);
out[i] = c & 0xfe;
}
}
/* reverse every byte */
/* alter lsb so the byte has odd parity */
for (i = 0; i < 24; i++)
{
c = out[i];
c = g_fips_reverse_table[c];
out[i] = g_fips_oddparity_table[c];
}
}
/*****************************************************************************/
static void APP_CC
xrdp_sec_establish_keys(struct xrdp_sec *self)
@ -705,6 +852,46 @@ xrdp_sec_establish_keys(struct xrdp_sec *self)
char session_key[48];
char temp_hash[48];
char input[48];
char client_encrypt_key[32];
char client_decrypt_key[32];
const char *fips_ivec;
void *sha1;
if (self->crypt_method == CRYPT_METHOD_FIPS)
{
LLOGLN(0, ("xrdp_sec_establish_keys: fips"));
sha1 = ssl_sha1_info_create();
ssl_sha1_transform(sha1, self->client_random + 16, 16);
ssl_sha1_transform(sha1, self->server_random + 16, 16);
ssl_sha1_complete(sha1, client_encrypt_key);
client_encrypt_key[20] = client_encrypt_key[0];
fips_expand_key_bits(client_encrypt_key, self->fips_encrypt_key);
ssl_sha1_info_delete(sha1);
sha1 = ssl_sha1_info_create();
ssl_sha1_transform(sha1, self->client_random, 16);
ssl_sha1_transform(sha1, self->server_random, 16);
ssl_sha1_complete(sha1, client_decrypt_key);
client_decrypt_key[20] = client_decrypt_key[0];
fips_expand_key_bits(client_decrypt_key, self->fips_decrypt_key);
ssl_sha1_info_delete(sha1);
sha1 = ssl_sha1_info_create();
ssl_sha1_transform(sha1, client_decrypt_key, 20);
ssl_sha1_transform(sha1, client_encrypt_key, 20);
ssl_sha1_complete(sha1, self->fips_sign_key);
ssl_sha1_info_delete(sha1);
fips_ivec = (const char *) g_fips_ivec;
self->encrypt_fips_info =
ssl_des3_encrypt_info_create(self->fips_encrypt_key, fips_ivec);
self->decrypt_fips_info =
ssl_des3_encrypt_info_create(self->fips_decrypt_key, fips_ivec);
}
else
{
LLOGLN(0, ("xrdp_sec_establish_keys: not fips"));
}
g_memcpy(input, self->client_random, 24);
g_memcpy(input + 24, self->server_random, 24);
@ -760,14 +947,26 @@ xrdp_sec_recv(struct xrdp_sec *self, struct stream *s, int *chan)
DEBUG((" in xrdp_sec_recv flags $%x", flags));
if (flags & SEC_ENCRYPT) /* 0x08 */
{
if (self->crypt_method == CRYPT_METHOD_FIPS)
{
if (!s_check_rem(s, 12))
{
return 1;
}
in_uint8s(s, 12); /* len(2), version(1), pad(1), signature(8) */
xrdp_sec_decrypt(self, s->p, (int)(s->end - s->p));
}
else
{
if (!s_check_rem(s, 8))
{
return 1;
}
in_uint8s(s, 8); /* signature */
in_uint8s(s, 8); /* signature(8) */
xrdp_sec_decrypt(self, s->p, (int)(s->end - s->p));
}
}
if (flags & SEC_CLIENT_RANDOM) /* 0x01 */
{
@ -884,7 +1083,10 @@ xrdp_sec_send(struct xrdp_sec *self, struct stream *s, int chan)
DEBUG((" in xrdp_sec_send"));
s_pop_layer(s, sec_hdr);
if (self->crypt_level > 1)
if (self->crypt_level == CRYPT_LEVEL_FIPS)
{
}
else if (self->crypt_level > CRYPT_LEVEL_LOW)
{
out_uint32_le(s, SEC_ENCRYPT);
datalen = (int)((s->end - s->p) - 8);
@ -905,6 +1107,235 @@ xrdp_sec_send(struct xrdp_sec *self, struct stream *s, int chan)
return 0;
}
/*****************************************************************************/
/* http://msdn.microsoft.com/en-us/library/cc240510.aspx
2.2.1.3.2 Client Core Data (TS_UD_CS_CORE) */
static int APP_CC
xrdp_sec_process_mcs_data_CS_CORE(struct xrdp_sec* self, struct stream* s)
{
int colorDepth;
int postBeta2ColorDepth;
int highColorDepth;
int supportedColorDepths;
int earlyCapabilityFlags;
in_uint8s(s, 4); /* version */
in_uint16_le(s, self->rdp_layer->client_info.width);
in_uint16_le(s, self->rdp_layer->client_info.height);
in_uint16_le(s, colorDepth);
g_writeln("colorDepth 0x%4.4x (0xca00 4bpp 0xca01 8bpp)", colorDepth);
switch (colorDepth)
{
case 0xca00: /* RNS_UD_COLOR_4BPP */
self->rdp_layer->client_info.bpp = 4;
break;
case 0xca01: /* RNS_UD_COLOR_8BPP */
self->rdp_layer->client_info.bpp = 8;
break;
}
in_uint8s(s, 2); /* SASSequence */
in_uint8s(s, 4); /* keyboardLayout */
in_uint8s(s, 4); /* clientBuild */
in_uint8s(s, 32); /* clientName */
in_uint8s(s, 4); /* keyboardType */
in_uint8s(s, 4); /* keyboardSubType */
in_uint8s(s, 4); /* keyboardFunctionKey */
in_uint8s(s, 64); /* imeFileName */
in_uint16_le(s, postBeta2ColorDepth);
g_writeln("postBeta2ColorDepth 0x%4.4x (0xca00 4bpp 0xca01 8bpp "
"0xca02 15bpp 0xca03 16bpp 0xca04 24bpp)", postBeta2ColorDepth);
switch (postBeta2ColorDepth)
{
case 0xca00: /* RNS_UD_COLOR_4BPP */
self->rdp_layer->client_info.bpp = 4;
break;
case 0xca01: /* RNS_UD_COLOR_8BPP */
self->rdp_layer->client_info.bpp = 8;
break;
case 0xca02: /* RNS_UD_COLOR_16BPP_555 */
self->rdp_layer->client_info.bpp = 15;
break;
case 0xca03: /* RNS_UD_COLOR_16BPP_565 */
self->rdp_layer->client_info.bpp = 16;
break;
case 0xca04: /* RNS_UD_COLOR_24BPP */
self->rdp_layer->client_info.bpp = 24;
break;
}
if (!s_check_rem(s, 2))
{
return 0;
}
in_uint8s(s, 2); /* clientProductId */
if (!s_check_rem(s, 4))
{
return 0;
}
in_uint8s(s, 4); /* serialNumber */
if (!s_check_rem(s, 2))
{
return 0;
}
in_uint16_le(s, highColorDepth);
g_writeln("highColorDepth 0x%4.4x (0x0004 4bpp 0x0008 8bpp 0x000f 15bpp "
"0x0010 16 bpp 0x0018 24bpp)", highColorDepth);
self->rdp_layer->client_info.bpp = highColorDepth;
if (!s_check_rem(s, 2))
{
return 0;
}
in_uint16_le(s, supportedColorDepths);
g_writeln("supportedColorDepths 0x%4.4x (0x0001 24bpp 0x0002 16bpp "
"0x0004 15bpp 0x0008 32bpp)", supportedColorDepths);
if (!s_check_rem(s, 2))
{
return 0;
}
in_uint16_le(s, earlyCapabilityFlags);
self->rdp_layer->client_info.mcs_early_capability_flags = earlyCapabilityFlags;
g_writeln("earlyCapabilityFlags 0x%4.4x (0x0002 want32)",
earlyCapabilityFlags);
if ((earlyCapabilityFlags & 0x0002) && (supportedColorDepths & 0x0008))
{
self->rdp_layer->client_info.bpp = 32;
}
if (!s_check_rem(s, 64))
{
return 0;
}
in_uint8s(s, 64); /* clientDigProductId */
if (!s_check_rem(s, 1))
{
return 0;
}
in_uint8(s, self->rdp_layer->client_info.mcs_connection_type); /* connectionType */
g_writeln("got client client connection type 0x%8.8x",
self->rdp_layer->client_info.mcs_connection_type);
if (!s_check_rem(s, 1))
{
return 0;
}
in_uint8s(s, 1); /* pad1octet */
if (!s_check_rem(s, 4))
{
return 0;
}
in_uint8s(s, 4); /* serverSelectedProtocol */
if (!s_check_rem(s, 4))
{
return 0;
}
in_uint8s(s, 4); /* desktopPhysicalWidth */
if (!s_check_rem(s, 4))
{
return 0;
}
in_uint8s(s, 4); /* desktopPhysicalHeight */
if (!s_check_rem(s, 2))
{
return 0;
}
in_uint8s(s, 2); /* reserved */
return 0;
}
/*****************************************************************************/
static int APP_CC
xrdp_sec_process_mcs_data_CS_SECURITY(struct xrdp_sec *self, struct stream* s)
{
int crypt_method;
int found;
g_writeln("xrdp_sec_process_mcs_data_CS_SECURITY:");
in_uint32_le(s, crypt_method);
if (crypt_method & CRYPT_METHOD_40BIT)
{
g_writeln(" client supports 40 bit encryption");
}
if (crypt_method & CRYPT_METHOD_128BIT)
{
g_writeln(" client supports 128 bit encryption");
}
if (crypt_method & CRYPT_METHOD_56BIT)
{
g_writeln(" client supports 56 bit encryption");
}
if (crypt_method & CRYPT_METHOD_FIPS)
{
g_writeln(" client supports fips encryption");
}
found = 0;
if ((found == 0) &&
(self->crypt_method & CRYPT_METHOD_FIPS) &&
(self->crypt_level == CRYPT_LEVEL_FIPS))
{
if (crypt_method & CRYPT_METHOD_FIPS)
{
g_writeln(" client and server support fips, using fips");
self->crypt_method = CRYPT_METHOD_FIPS;
self->crypt_level = CRYPT_LEVEL_FIPS;
found = 1;
}
}
if ((found == 0) &&
(self->crypt_method & CRYPT_METHOD_128BIT) &&
(self->crypt_level == CRYPT_LEVEL_HIGH))
{
if (crypt_method & CRYPT_METHOD_128BIT)
{
g_writeln(" client and server support high crypt, using "
"high crypt");
self->crypt_method = CRYPT_METHOD_128BIT;
self->crypt_level = CRYPT_LEVEL_HIGH;
found = 1;
}
}
if ((found == 0) &&
(self->crypt_method & CRYPT_METHOD_40BIT) &&
(self->crypt_level == CRYPT_LEVEL_CLIENT_COMPATIBLE))
{
if (crypt_method & CRYPT_METHOD_40BIT)
{
g_writeln(" client and server support medium crypt, using "
"medium crypt");
self->crypt_method = CRYPT_METHOD_40BIT;
self->crypt_level = CRYPT_LEVEL_CLIENT_COMPATIBLE;
found = 1;
}
}
if ((found == 0) &&
(self->crypt_method & CRYPT_METHOD_40BIT) &&
(self->crypt_level == CRYPT_LEVEL_LOW))
{
if (crypt_method & CRYPT_METHOD_40BIT)
{
g_writeln(" client and server support low crypt, using "
"low crypt");
self->crypt_method = CRYPT_METHOD_40BIT;
self->crypt_level = CRYPT_LEVEL_LOW;
found = 1;
}
}
if (found == 0)
{
g_writeln(" no security");
}
return 0;
}
/*****************************************************************************/
/* this adds the mcs channels in the list of channels to be used when
creating the server mcs data */
@ -954,6 +1385,7 @@ xrdp_sec_process_mcs_data_channels(struct xrdp_sec *self, struct stream *s)
return 0;
}
/*****************************************************************************/
/* reads the client monitors data */
static int APP_CC
@ -1009,6 +1441,7 @@ xrdp_sec_process_mcs_data_monitors(struct xrdp_sec *self, struct stream *s)
}
return 0;
}
/*****************************************************************************/
/* process client mcs data, we need some things in here to create the server
mcs data */
@ -1038,40 +1471,71 @@ xrdp_sec_process_mcs_data(struct xrdp_sec *self)
if (size < 4 || !s_check_rem(s, size - 4))
{
g_writeln("error in xrdp_sec_process_mcs_data tag %d size %d",
tag, size);
LLOGLN(0, ("error in xrdp_sec_process_mcs_data tag %d size %d",
tag, size));
break;
}
LLOGLN(10, ("xrdp_sec_process_mcs_data: 0x%8.8x", tag));
switch (tag)
{
case SEC_TAG_CLI_INFO:
case SEC_TAG_CLI_INFO: /* CS_CORE 0xC001 */
if (xrdp_sec_process_mcs_data_CS_CORE(self, s) != 0)
{
return 1;
}
break;
case SEC_TAG_CLI_CRYPT:
case SEC_TAG_CLI_CRYPT: /* CS_SECURITY 0xC002 */
if (xrdp_sec_process_mcs_data_CS_SECURITY(self, s) != 0)
{
return 1;
}
break;
case SEC_TAG_CLI_CHANNELS:
case SEC_TAG_CLI_CHANNELS: /* CS_NET 0xC003 */
if (xrdp_sec_process_mcs_data_channels(self, s) != 0)
{
return 1;
}
break;
case SEC_TAG_CLI_4:
case SEC_TAG_CLI_4: /* CS_CLUSTER 0xC004 */
break;
case SEC_TAG_CLI_MONITOR:
case SEC_TAG_CLI_MONITOR: /* CS_MONITOR 0xC005 */
if (xrdp_sec_process_mcs_data_monitors(self, s) != 0)
{
return 1;
}
break;
/* CS_MCS_MSGCHANNEL 0xC006
CS_MONITOR_EX 0xC008
CS_MULTITRANSPORT 0xC00A
SC_CORE 0x0C01
SC_SECURITY 0x0C02
SC_NET 0x0C03
SC_MCS_MSGCHANNEL 0x0C04
SC_MULTITRANSPORT 0x0C08 */
default:
g_writeln("error unknown xrdp_sec_process_mcs_data tag %d size %d",
tag, size);
LLOGLN(0, ("error unknown xrdp_sec_process_mcs_data tag %d "
"size %d", tag, size));
break;
}
s->p = hold_p + size;
}
if (self->rdp_layer->client_info.max_bpp > 0)
{
if (self->rdp_layer->client_info.bpp >
self->rdp_layer->client_info.max_bpp)
{
LLOGLN(0, ("xrdp_rdp_parse_client_mcs_data: client asked "
"for %dbpp connection but configuration is limited "
"to %dbpp", self->rdp_layer->client_info.bpp,
self->rdp_layer->client_info.max_bpp));
self->rdp_layer->client_info.bpp =
self->rdp_layer->client_info.max_bpp;
}
}
/* set p to beginning */
s->p = s->data;
return 0;