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xrdp_sec.c
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/**
* xrdp: A Remote Desktop Protocol server.
*
* 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.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* secure layer
*/
#if defined(HAVE_CONFIG_H)
#include <config_ac.h>
#endif
#include "libxrdp.h"
#include "ms-rdpbcgr.h"
#include "log.h"
#include "string_calls.h"
/* some compilers need unsigned char to avoid warnings */
static tui8 g_pad_54[40] =
{
54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54, 54,
54, 54, 54, 54, 54, 54, 54, 54
};
/* some compilers need unsigned char to avoid warnings */
static tui8 g_pad_92[48] =
{
92, 92, 92, 92, 92, 92, 92, 92, 92, 92, 92, 92, 92, 92, 92, 92,
92, 92, 92, 92, 92, 92, 92, 92, 92, 92, 92, 92, 92, 92, 92, 92,
92, 92, 92, 92, 92, 92, 92, 92, 92, 92, 92, 92, 92, 92, 92, 92
};
/*****************************************************************************/
/* Licensing request v2 PDU
*
* [MS-RDPBCGR] TS_SECURITY_HEADER - Basic
* [MS-RDPELE] SERVER_LICENSE_REQUEST with PREAMBLE_VERSION_2_0
*/
/* some compilers need unsigned char to avoid warnings */
static tui8 g_lic1[322] =
{
/* [MS-RDPBCGR] TS_SECURITY_HEADER - Basic
* flags (2) = 0x0080 (SEC_LICENSE_PKT)
* flagsHi (2) = unused (arbitrary data)
* [MS-RDPBCGR] LICENSE_PREAMBLE
* bMsgType (1) = 0x01 (LICENSE_REQUEST)
* flags (1) = 0x02 (PREAMBLE_VERSION_2_0)
* wMsgSize (2) = 318 (excludes the 4 bytes TS_SECURITY_HEADER Basic)
*/
0x80, 0x00, 0x3e, 0x01, 0x01, 0x02, 0x3e, 0x01,
/* [MS-RDPELE] SERVER_LICENSE_REQUEST
* ServerRandom (32) = <see hex below>
*/
0x7b, 0x3c, 0x31, 0xa6, 0xae, 0xe8, 0x74, 0xf6,
0xb4, 0xa5, 0x03, 0x90, 0xe7, 0xc2, 0xc7, 0x39,
0xba, 0x53, 0x1c, 0x30, 0x54, 0x6e, 0x90, 0x05,
0xd0, 0x05, 0xce, 0x44, 0x18, 0x91, 0x83, 0x81,
/* [MS-RDPELE] SERVER_LICENSE_REQUEST - ProductInfo
* [MS-RDPELE] PRODUCT_INFO
* dwVersion (4) = 0x00040000
* cbCompanyName (4) = 0x0000002c (44)
*/
0x00, 0x00, 0x04, 0x00, 0x2c, 0x00, 0x00, 0x00,
/*
* pbCompanyName (44) = UTF-16("Microsoft Corporation")
* cbProductId (4) = 0x00000008 (8)
*/
0x4d, 0x00, 0x69, 0x00, 0x63, 0x00, 0x72, 0x00,
0x6f, 0x00, 0x73, 0x00, 0x6f, 0x00, 0x66, 0x00,
0x74, 0x00, 0x20, 0x00, 0x43, 0x00, 0x6f, 0x00,
0x72, 0x00, 0x70, 0x00, 0x6f, 0x00, 0x72, 0x00,
0x61, 0x00, 0x74, 0x00, 0x69, 0x00, 0x6f, 0x00,
0x6e, 0x00, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00,
/*
* pbProductId (8) = UTF-16("236")
*/
0x32, 0x00, 0x33, 0x00, 0x36, 0x00, 0x00, 0x00,
/* [MS-RDPELE] SERVER_LICENSE_REQUEST - KeyExchangeList
* [MS-RDPBCGR] LICENSE_BINARY_BLOB
* wBlobType (2) = 0x000d (BB_KEY_EXCHG_ALG_BLOB)
* wBlobLen (2) = 0x0004 (4)
* blobData (4) = 0x00000001 (KEY_EXCHANGE_ALG_RSA)
*/
0x0d, 0x00, 0x04, 0x00, 0x01, 0x00, 0x00, 0x00,
/* [MS-RDPELE] SERVER_LICENSE_REQUEST - ServerCertificate
* [MS-RDPBCGR] LICENSE_BINARY_BLOB
* wBlobType (2) = BB_CERTIFICATE_BLOB (0x0003)
* wBlobLen (2) = 0x00b8 (184)
* blobData = <SERVER_CERTIFICATE>
*
* [MS-RDPBCGR] SERVER_CERTIFICATE
* dwVersion (31 bits) = 0x00000001 (CERT_CHAIN_VERSION_1)
* t (1 bit) = 0 (temporary certificate)
*/
0x03, 0x00, 0xb8, 0x00, 0x01, 0x00, 0x00, 0x00,
/*
* certData = <PROPRIETARYSERVERCERTIFICATE>
*
* [MS-RDPBCGR] PROPRIETARYSERVERCERTIFICATE
* dwSigAlgId (4) = 0x00000001 (SIGNATURE_ALG_RSA)
* dwKeyAlgId (4) = 0x00000001 (KEY_EXCHANGE_ALG_RSA)
* wPublicKeyBlobType (2) = 0x0006 (BB_RSA_KEY_BLOB)
* wPublicKeyBlobLen (2) = 0x005c (92)
* PublicKeyBlob = <RSA_PUBLIC_KEY>
*
* [MS-RDPBCGR] RSA_PUBLIC_KEY
* magic (4) = 0x31415352
* keylen (4) = 0x00000048 (72)
* bitlen (4) = 0x00000200 (512)
* datalen (4) = 0x0000003f (63)
* pubExp (4) = 0x00010001 (65537)
*/
0x01, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
0x06, 0x00, 0x5c, 0x00, 0x52, 0x53, 0x41, 0x31,
0x48, 0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00,
0x3f, 0x00, 0x00, 0x00, 0x01, 0x00, 0x01, 0x00,
/*
* modulus (72) = <see hex below>
*/
0x01, 0xc7, 0xc9, 0xf7, 0x8e, 0x5a, 0x38, 0xe4,
0x29, 0xc3, 0x00, 0x95, 0x2d, 0xdd, 0x4c, 0x3e,
0x50, 0x45, 0x0b, 0x0d, 0x9e, 0x2a, 0x5d, 0x18,
0x63, 0x64, 0xc4, 0x2c, 0xf7, 0x8f, 0x29, 0xd5,
0x3f, 0xc5, 0x35, 0x22, 0x34, 0xff, 0xad, 0x3a,
0xe6, 0xe3, 0x95, 0x06, 0xae, 0x55, 0x82, 0xe3,
0xc8, 0xc7, 0xb4, 0xa8, 0x47, 0xc8, 0x50, 0x71,
0x74, 0x29, 0x53, 0x89, 0x6d, 0x9c, 0xed, 0x70,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
/* [MS-RDPELE] SERVER_LICENSE_REQUEST - ServerCertificate
* [MS-RDPBCGR] LICENSE_BINARY_BLOB - blobData
* [MS-RDPBCGR] SERVER_CERTIFICATE - certData
* [MS-RDPBCGR] PROPRIETARYSERVERCERTIFICATE
* wSignatureBlobType (2) = 0x0008 (BB_RSA_SIGNATURE_BLOB)
* wSignatureBlobLen (2) = 0x0048 (72)
* SignatureBlob (72) = <see hex below, calculated using [MS-RDPBCGR] 5.3.3.1.2>
*/
0x08, 0x00, 0x48, 0x00, 0xa8, 0xf4, 0x31, 0xb9,
0xab, 0x4b, 0xe6, 0xb4, 0xf4, 0x39, 0x89, 0xd6,
0xb1, 0xda, 0xf6, 0x1e, 0xec, 0xb1, 0xf0, 0x54,
0x3b, 0x5e, 0x3e, 0x6a, 0x71, 0xb4, 0xf7, 0x75,
0xc8, 0x16, 0x2f, 0x24, 0x00, 0xde, 0xe9, 0x82,
0x99, 0x5f, 0x33, 0x0b, 0xa9, 0xa6, 0x94, 0xaf,
0xcb, 0x11, 0xc3, 0xf2, 0xdb, 0x09, 0x42, 0x68,
0x29, 0x56, 0x58, 0x01, 0x56, 0xdb, 0x59, 0x03,
0x69, 0xdb, 0x7d, 0x37, 0x00, 0x00, 0x00, 0x00,
/* <last 4 bytes of SignatureBlob>
*
* [MS-RDPELE] SERVER_LICENSE_REQUEST - ScopeList
* [MS-RDPELE] SCOPE_LIST
* ScopeCount (4) = 0x00000001 (1)
* ScopeArray = <LICENSE_BINARY_BLOB>
*
* [MS-RDPBCGR] LICENSE_BINARY_BLOB
* wBlobType (2) = 0x000e (BB_SCOPE_BLOB)
* wBlobLen (2) = 0x000e (14)
* blobData (14) = ISO-8859-1("microsoft.com")
*/
0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
0x0e, 0x00, 0x0e, 0x00, 0x6d, 0x69, 0x63, 0x72,
0x6f, 0x73, 0x6f, 0x66, 0x74, 0x2e, 0x63, 0x6f,
0x6d, 0x00
};
/*****************************************************************************/
/* Licensing success response v2 PDU
*
* [MS-RDPBCGR] TS_SECURITY_HEADER - Basic
* [MS-RDPELE] LICENSE_ERROR_MESSAGE with STATUS_VALID_CLIENT
*/
/* some compilers need unsigned char to avoid warnings */
static tui8 g_lic2[20] =
{
/* [MS-RDPBCGR] TS_SECURITY_HEADER - Basic
* flags (2) = 0x0080 (SEC_LICENSE_PKT)
* flagsHi (2) = unused (arbitrary data)
* [MS-RDPBCGR] LICENSE_PREAMBLE
* bMsgType (1) = 0xff (ERROR_ALERT)
* flags (1) = 0x02 (PREAMBLE_VERSION_2_0)
* wMsgSize (2) = 0x10 (16, excludes the 4 bytes TS_SECURITY_HEADER Basic)
*/
0x80, 0x00, 0x10, 0x00, 0xff, 0x02, 0x10, 0x00,
/*
* [MS-RDPBCGR] LICENSE_ERROR_MESSAGE
* dwErrorCode (4) = 0x00000007 (STATUS_VALID_CLIENT)
* dwStateTransition (4) = 0x00000002 (ST_NO_TRANSITION)
* bbErrorInfo = <LICENSE_BINARY_BLOB>
*/
0x07, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00,
/*
* [MS-RDPBCGR] LICENSE_BINARY_BLOB
* wBlobType (2) = 0x1428 <ignored by client> (should be 0x0004 BB_ERROR_BLOB)
* wBlobLen (2) = 0x0000 (0)
*/
0x28, 0x14, 0x00, 0x00
};
/*****************************************************************************/
/* Licensing success response v3 PDU
*
* [MS-RDPBCGR] TS_SECURITY_HEADER - Basic
* [MS-RDPELE] LICENSE_ERROR_MESSAGE with STATUS_VALID_CLIENT
*
* used for Media Center Edition
*/
/* some compilers need unsigned char to avoid warnings */
static tui8 g_lic3[20] =
{
/* S */
/* [MS-RDPBCGR] TS_SECURITY_HEADER - Basic
* flags (2) = 0x0280 (SEC_LICENSE_PKT | SEC_LICENSE_ENCRYPT_CS)
* flagsHi (2) = unused (arbitrary data)
* [MS-RDPBCGR] LICENSE_PREAMBLE
* bMsgType (1) = 0xff (ERROR_ALERT)
* flags (1) = 0x03 (PREAMBLE_VERSION_3_0)
* wMsgSize (2) = 0x0010 (16, excludes the 4 bytes TS_SECURITY_HEADER Basic)
*/
0x80, 0x02, 0x10, 0x00, 0xff, 0x03, 0x10, 0x00,
/*
* [MS-RDPBCGR] LICENSE_ERROR_MESSAGE
* dwErrorCode (4) = 0x00000007 (STATUS_VALID_CLIENT)
* dwStateTransition (4) = 0x00000002 (ST_NO_TRANSITION)
* bbErrorInfo = <LICENSE_BINARY_BLOB>
*/
0x07, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00,
/*
* [MS-RDPBCGR] LICENSE_BINARY_BLOB
* wBlobType (2) = 0x99f3 <ignored by client> (should be 0x0004 BB_ERROR_BLOB)
* wBlobLen (2) = 0x0000 (0)
*/
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
hex_str_to_bin(char *in, char *out, int out_len)
{
int in_index;
int in_len;
int out_index;
int val;
char hex[16];
in_len = g_strlen(in);
out_index = 0;
in_index = 0;
while (in_index <= (in_len - 4))
{
if ((in[in_index] == '0') && (in[in_index + 1] == 'x'))
{
hex[0] = in[in_index + 2];
hex[1] = in[in_index + 3];
hex[2] = 0;
if (out_index < out_len)
{
val = g_htoi(hex);
out[out_index] = val;
}
out_index++;
}
in_index++;
}
}
/*****************************************************************************/
static void
xrdp_load_keyboard_layout(struct xrdp_client_info *client_info)
{
int fd;
int index = 0;
int bytes;
struct list *names = (struct list *)NULL;
struct list *items = (struct list *)NULL;
struct list *values = (struct list *)NULL;
char *item = (char *)NULL;
char *value = (char *)NULL;
char *q = (char *)NULL;
char keyboard_cfg_file[256] = { 0 };
char rdp_layout[256] = { 0 };
LOG(LOG_LEVEL_INFO, "xrdp_load_keyboard_layout: keyboard_type [%d] keyboard_subtype [%d]",
client_info->keyboard_type, client_info->keyboard_subtype);
/* infer model/variant */
/* TODO specify different X11 keyboard models/variants */
g_memset(client_info->model, 0, sizeof(client_info->model));
g_memset(client_info->variant, 0, sizeof(client_info->variant));
g_strncpy(client_info->layout, "us", sizeof(client_info->layout) - 1);
if (client_info->keyboard_subtype == 3)
{
/* macintosh keyboard */
bytes = sizeof(client_info->variant);
g_strncpy(client_info->variant, "mac", bytes - 1);
}
else if (client_info->keyboard_subtype == 0)
{
/* default - standard subtype */
client_info->keyboard_subtype = 1;
}
g_snprintf(keyboard_cfg_file, 255, "%s/xrdp_keyboard.ini", XRDP_CFG_PATH);
LOG(LOG_LEVEL_DEBUG, "keyboard_cfg_file %s", keyboard_cfg_file);
fd = g_file_open(keyboard_cfg_file);
if (fd >= 0)
{
int section_found = -1;
char section_rdp_layouts[256] = { 0 };
char section_layouts_map[256] = { 0 };
names = list_create();
names->auto_free = 1;
items = list_create();
items->auto_free = 1;
values = list_create();
values->auto_free = 1;
file_read_sections(fd, names);
for (index = 0; index < names->count; index++)
{
q = (char *)list_get_item(names, index);
if (g_strncasecmp("default", q, 8) != 0)
{
int i;
file_read_section(fd, q, items, values);
for (i = 0; i < items->count; i++)
{
item = (char *)list_get_item(items, i);
value = (char *)list_get_item(values, i);
LOG(LOG_LEVEL_DEBUG, "xrdp_load_keyboard_layout: item %s value %s",
item, value);
if (g_strcasecmp(item, "keyboard_type") == 0)
{
int v = g_atoi(value);
if (v == client_info->keyboard_type)
{
section_found = index;
}
}
else if (g_strcasecmp(item, "keyboard_subtype") == 0)
{
int v = g_atoi(value);
if (v != client_info->keyboard_subtype &&
section_found == index)
{
section_found = -1;
break;
}
}
else if (g_strcasecmp(item, "rdp_layouts") == 0)
{
if (section_found != -1 && section_found == index)
{
g_strncpy(section_rdp_layouts, value, 255);
}
}
else if (g_strcasecmp(item, "layouts_map") == 0)
{
if (section_found != -1 && section_found == index)
{
g_strncpy(section_layouts_map, value, 255);
}
}
else if (g_strcasecmp(item, "model") == 0)
{
if (section_found != -1 && section_found == index)
{
bytes = sizeof(client_info->model);
g_memset(client_info->model, 0, bytes);
g_strncpy(client_info->model, value, bytes - 1);
}
}
else if (g_strcasecmp(item, "variant") == 0)
{
if (section_found != -1 && section_found == index)
{
bytes = sizeof(client_info->variant);
g_memset(client_info->variant, 0, bytes);
g_strncpy(client_info->variant, value, bytes - 1);
}
}
else if (g_strcasecmp(item, "options") == 0)
{
if (section_found != -1 && section_found == index)
{
bytes = sizeof(client_info->options);
g_memset(client_info->options, 0, bytes);
g_strncpy(client_info->options, value, bytes - 1);
}
}
else
{
/*
* mixing items from different sections will result in
* skipping over current section.
*/
LOG(LOG_LEVEL_DEBUG, "xrdp_load_keyboard_layout: skipping "
"configuration item - %s, continuing to next "
"section", item);
break;
}
}
list_clear(items);
list_clear(values);
}
}
if (section_found == -1)
{
g_memset(section_rdp_layouts, 0, sizeof(char) * 256);
g_memset(section_layouts_map, 0, sizeof(char) * 256);
// read default section
file_read_section(fd, "default", items, values);
for (index = 0; index < items->count; index++)
{
item = (char *)list_get_item(items, index);
value = (char *)list_get_item(values, index);
if (g_strcasecmp(item, "rdp_layouts") == 0)
{
g_strncpy(section_rdp_layouts, value, 255);
}
else if (g_strcasecmp(item, "layouts_map") == 0)
{
g_strncpy(section_layouts_map, value, 255);
}
}
list_clear(items);
list_clear(values);
}
/* load the map */
file_read_section(fd, section_rdp_layouts, items, values);
for (index = 0; index < items->count; index++)
{
int rdp_layout_id;
item = (char *)list_get_item(items, index);
value = (char *)list_get_item(values, index);
rdp_layout_id = g_htoi(value);
if (rdp_layout_id == client_info->keylayout)
{
g_strncpy(rdp_layout, item, 255);
break;
}
}
list_clear(items);
list_clear(values);
file_read_section(fd, section_layouts_map, items, values);
for (index = 0; index < items->count; index++)
{
item = (char *)list_get_item(items, index);
value = (char *)list_get_item(values, index);
if (g_strcasecmp(item, rdp_layout) == 0)
{
bytes = sizeof(client_info->layout);
g_strncpy(client_info->layout, value, bytes - 1);
break;
}
}
list_delete(names);
list_delete(items);
list_delete(values);
LOG(LOG_LEVEL_INFO, "xrdp_load_keyboard_layout: model [%s] variant [%s] "
"layout [%s] options [%s]", client_info->model,
client_info->variant, client_info->layout, client_info->options);
g_file_close(fd);
}
else
{
LOG(LOG_LEVEL_ERROR, "xrdp_load_keyboard_layout: error opening %s",
keyboard_cfg_file);
}
}
/*****************************************************************************/
struct xrdp_sec *
xrdp_sec_create(struct xrdp_rdp *owner, struct trans *trans)
{
struct xrdp_sec *self;
self = (struct xrdp_sec *) g_malloc(sizeof(struct xrdp_sec), 1);
self->rdp_layer = owner;
self->crypt_method = CRYPT_METHOD_NONE; /* set later */
self->crypt_level = CRYPT_LEVEL_NONE;
self->mcs_layer = xrdp_mcs_create(self, trans, &(self->client_mcs_data),
&(self->server_mcs_data));
self->fastpath_layer = xrdp_fastpath_create(self, trans);
self->chan_layer = xrdp_channel_create(self, self->mcs_layer);
self->is_security_header_present = 1;
return self;
}
/*****************************************************************************/
void
xrdp_sec_delete(struct xrdp_sec *self)
{
if (self == 0)
{
return;
}
xrdp_channel_delete(self->chan_layer);
xrdp_mcs_delete(self->mcs_layer);
xrdp_fastpath_delete(self->fastpath_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);
ssl_hmac_info_delete(self->sign_fips_info);
g_free(self->client_mcs_data.data);
g_free(self->server_mcs_data.data);
/* Crypto information must always be cleared */
g_memset(self, 0, sizeof(struct xrdp_sec));
g_free(self);
}
/*****************************************************************************/
/* returns error */
int
xrdp_sec_init(struct xrdp_sec *self, struct stream *s)
{
if (xrdp_mcs_init(self->mcs_layer, s) != 0)
{
LOG(LOG_LEVEL_ERROR, "xrdp_sec_init: xrdp_mcs_init failed");
return 1;
}
if (self->crypt_level > CRYPT_LEVEL_NONE) /* RDP encryption */
{
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);
}
else if (self->crypt_level)
{
s_push_layer(s, sec_hdr, 4);
}
}
return 0;
}
/*****************************************************************************/
/* Reduce key entropy from 64 to 40 bits */
static void
xrdp_sec_make_40bit(char *key)
{
key[0] = 0xd1;
key[1] = 0x26;
key[2] = 0x9e;
}
/*****************************************************************************/
/* returns error */
/* update an encryption key */
static int
xrdp_sec_update(char *key, char *update_key, int key_len)
{
char shasig[20];
void *sha1_info;
void *md5_info;
void *rc4_info;
sha1_info = ssl_sha1_info_create();
md5_info = ssl_md5_info_create();
rc4_info = ssl_rc4_info_create();
ssl_sha1_clear(sha1_info);
ssl_sha1_transform(sha1_info, update_key, key_len);
ssl_sha1_transform(sha1_info, (char *)g_pad_54, 40);
ssl_sha1_transform(sha1_info, key, key_len);
ssl_sha1_complete(sha1_info, shasig);
ssl_md5_clear(md5_info);
ssl_md5_transform(md5_info, update_key, key_len);
ssl_md5_transform(md5_info, (char *)g_pad_92, 48);
ssl_md5_transform(md5_info, shasig, 20);
ssl_md5_complete(md5_info, key);
ssl_rc4_set_key(rc4_info, key, key_len);
ssl_rc4_crypt(rc4_info, key, key_len);
if (key_len == 8)
{
xrdp_sec_make_40bit(key);
}
ssl_sha1_info_delete(sha1_info);
ssl_md5_info_delete(md5_info);
ssl_rc4_info_delete(rc4_info);
return 0;
}
/*****************************************************************************/
static void
xrdp_sec_fips_decrypt(struct xrdp_sec *self, char *data, int len)
{
LOG_DEVEL(LOG_LEVEL_DEBUG, "xrdp_sec_fips_decrypt:");
ssl_des3_decrypt(self->decrypt_fips_info, len, data, data);
self->decrypt_use_count++;
}
/*****************************************************************************/
static void
xrdp_sec_decrypt(struct xrdp_sec *self, char *data, int len)
{
LOG_DEVEL(LOG_LEVEL_DEBUG, "xrdp_sec_decrypt:");
if (self->decrypt_use_count == 4096)
{
xrdp_sec_update(self->decrypt_key, self->decrypt_update_key,
self->rc4_key_len);
ssl_rc4_set_key(self->decrypt_rc4_info, self->decrypt_key,
self->rc4_key_len);
self->decrypt_use_count = 0;
}
ssl_rc4_crypt(self->decrypt_rc4_info, data, len);
self->decrypt_use_count++;
}
/*****************************************************************************/
static void
xrdp_sec_fips_encrypt(struct xrdp_sec *self, char *data, int len)
{
LOG_DEVEL(LOG_LEVEL_DEBUG, "xrdp_sec_fips_encrypt:");
ssl_des3_encrypt(self->encrypt_fips_info, len, data, data);
self->encrypt_use_count++;
}
/*****************************************************************************/
static void
xrdp_sec_encrypt(struct xrdp_sec *self, char *data, int len)
{
LOG_DEVEL(LOG_LEVEL_DEBUG, "xrdp_sec_encrypt:");
if (self->encrypt_use_count == 4096)
{
xrdp_sec_update(self->encrypt_key, self->encrypt_update_key,
self->rc4_key_len);
ssl_rc4_set_key(self->encrypt_rc4_info, self->encrypt_key,
self->rc4_key_len);
self->encrypt_use_count = 0;
}
ssl_rc4_crypt(self->encrypt_rc4_info, data, len);
self->encrypt_use_count++;
}
/*****************************************************************************
* convert utf-16 encoded string from stream into utf-8 string.
* note: src_bytes doesn't include the null-terminator char.
* Copied From: xrdp_sec.c
*/
static int
unicode_utf16_in(struct stream *s, int src_bytes, char *dst, int dst_len)
{
twchar *src;
int num_chars;
int i;
int bytes;
LOG_DEVEL(LOG_LEVEL_TRACE, "unicode_utf16_in: uni_len %d, dst_len %d", src_bytes, dst_len);
if (src_bytes == 0)
{
if (!s_check_rem_and_log(s, 2, "Parsing UTF-16"))
{
return 1;
}
LOG_DEVEL(LOG_LEVEL_TRACE, "unicode_utf16_in: num_chars 0, dst '' (empty string)");
in_uint8s(s, 2); /* null terminator */
return 0;
}
bytes = src_bytes + 2; /* include the null terminator */
src = g_new0(twchar, bytes);
for (i = 0; i < bytes / 2; ++i)
{
if (!s_check_rem_and_log(s, 2, "Parsing UTF-16"))
{
g_free(src);
return 1;
}
in_uint16_le(s, src[i]);
}
num_chars = g_wcstombs(dst, src, dst_len);
if (num_chars < 0)
{
g_memset(dst, '\0', dst_len);
}
LOG_DEVEL(LOG_LEVEL_TRACE, "unicode_utf16_in: num_chars %d, dst '%s'", num_chars, dst);
g_free(src);
return 0;
}
/*****************************************************************************/
/* Process TS_INFO_PACKET */
/* returns error */
static int
xrdp_sec_process_logon_info(struct xrdp_sec *self, struct stream *s)
{
int flags = 0;
int len_domain = 0;
int len_user = 0;
int len_password = 0;
int len_program = 0;
int len_directory = 0;
int len_ip = 0;
int len_dll = 0;
char tmpdata[256];
const char *sep;
/* initialize (zero out) local variables */
g_memset(tmpdata, 0, sizeof(char) * 256);
if (!s_check_rem_and_log(s, 8, "Parsing [MS-RDPBCGR] TS_INFO_PACKET"))
{
return 1;
}
in_uint8s(s, 4);
in_uint32_le(s, flags);
LOG_DEVEL(LOG_LEVEL_TRACE, "Parsing [MS-RDPBCGR] TS_INFO_PACKET");
/* this is the first test that the decrypt is working */
if ((flags & RDP_LOGON_NORMAL) != RDP_LOGON_NORMAL) /* 0x33 */
{
/* must be or error */
LOG(LOG_LEVEL_ERROR, "received wrong flags, likely decrypt not working");
return 1;
}
if (flags & RDP_LOGON_LEAVE_AUDIO)
{
self->rdp_layer->client_info.sound_code = 1;
LOG_DEVEL(LOG_LEVEL_DEBUG, "[MS-RDPBCGR] TS_INFO_PACKET flag INFO_REMOTECONSOLEAUDIO found");
LOG(LOG_LEVEL_DEBUG,
"Client requested that audio on the server be played on the server.");
}
if (flags & RDP_LOGON_RAIL)
{
self->rdp_layer->client_info.rail_enable = 1;
LOG_DEVEL(LOG_LEVEL_DEBUG, "[MS-RDPBCGR] TS_INFO_PACKET flag INFO_RAIL found");
LOG(LOG_LEVEL_DEBUG,
"Client requested Remote Application Integrated Locally (RAIL).");
}
if (flags & RDP_LOGON_AUTO)
{
LOG_DEVEL(LOG_LEVEL_DEBUG, "[MS-RDPBCGR] TS_INFO_PACKET flag INFO_AUTOLOGON found");
/* todo, for now not allowing autologon and mce both */
if (!self->rdp_layer->client_info.is_mce)
{
self->rdp_layer->client_info.rdp_autologin = 1;
LOG(LOG_LEVEL_DEBUG, "Client requested auto logon.");
}
else
{
LOG(LOG_LEVEL_WARNING, "Auto logon is not supported with MCE");
}
}
if (flags & RDP_COMPRESSION)
{
LOG_DEVEL(LOG_LEVEL_DEBUG, "[MS-RDPBCGR] TS_INFO_PACKET flag INFO_COMPRESSION found, "
"CompressionType 0x%1.1x", (flags & 0x00001E00) >> 9);
/* TODO: check the client's supported compression type vs the server
compression used */
if (self->rdp_layer->client_info.use_bulk_comp)
{
self->rdp_layer->client_info.rdp_compression = 1;
LOG(LOG_LEVEL_DEBUG, "Client requested compression enabled.");
}
else
{
LOG(LOG_LEVEL_DEBUG, "Client requested compression, but server "
"compression is disabled.");
}
}
if (!s_check_rem_and_log(s, 2, "Parsing [MS-RDPBCGR] TS_INFO_PACKET cbDomain"))
{
return 1;
}
in_uint16_le(s, len_domain);
if (len_domain >= INFO_CLIENT_MAX_CB_LEN)
{
LOG(LOG_LEVEL_ERROR,
"Client supplied domain is too long. Max length %d, domain length %d",
INFO_CLIENT_MAX_CB_LEN, len_domain);
return 1;
}
if (!s_check_rem_and_log(s, 2, "Parsing [MS-RDPBCGR] TS_INFO_PACKET cbUserName"))
{
return 1;
}
in_uint16_le(s, len_user);
/*
* Microsoft's itap client running on Mac OS/Android
* always sends autologon credentials, even when user has not
* configured any
*/
if (len_user == 0 && self->rdp_layer->client_info.rdp_autologin)
{
LOG(LOG_LEVEL_DEBUG, "Client supplied user name is empty, disabling autologin");
self->rdp_layer->client_info.rdp_autologin = 0;
}
if (len_user >= INFO_CLIENT_MAX_CB_LEN)
{
LOG(LOG_LEVEL_ERROR,
"Client supplied user name is too long. Max length %d, user name length %d",
INFO_CLIENT_MAX_CB_LEN, len_user);
return 1;
}
if (!s_check_rem_and_log(s, 2, "Parsing [MS-RDPBCGR] TS_INFO_PACKET cbPassword"))
{
return 1;
}
in_uint16_le(s, len_password);
if (len_password >= INFO_CLIENT_MAX_CB_LEN)
{
LOG(LOG_LEVEL_ERROR,
"Client supplied password is too long. Max length %d, password length %d",
INFO_CLIENT_MAX_CB_LEN, len_password);
return 1;
}
if (!s_check_rem_and_log(s, 2, "Parsing [MS-RDPBCGR] TS_INFO_PACKET cbAlternateShell"))
{
return 1;
}
in_uint16_le(s, len_program);
if (len_program >= INFO_CLIENT_MAX_CB_LEN)
{
LOG(LOG_LEVEL_ERROR,
"Client supplied program name is too long. Max length %d, program name length %d",
INFO_CLIENT_MAX_CB_LEN, len_program);
return 1;
}
if (!s_check_rem_and_log(s, 2, "Parsing [MS-RDPBCGR] TS_INFO_PACKET cbWorkingDir"))
{
return 1;
}
in_uint16_le(s, len_directory);
if (len_directory >= INFO_CLIENT_MAX_CB_LEN)
{
LOG(LOG_LEVEL_ERROR,
"Client supplied directory name is too long. Max length %d, directory name length %d",
INFO_CLIENT_MAX_CB_LEN, len_directory);
return 1;
}
if (unicode_utf16_in(s, len_domain, self->rdp_layer->client_info.domain, sizeof(self->rdp_layer->client_info.domain) - 1) != 0)
{
LOG(LOG_LEVEL_ERROR, "ERROR reading domain");
return 1;
}
if (unicode_utf16_in(s, len_user, self->rdp_layer->client_info.username, sizeof(self->rdp_layer->client_info.username) - 1) != 0)
{
LOG(LOG_LEVEL_ERROR, "ERROR reading user name");
return 1;
}
if (flags & RDP_LOGON_AUTO)
{
if (unicode_utf16_in(s, len_password, self->rdp_layer->client_info.password, sizeof(self->rdp_layer->client_info.password) - 1) != 0)
{
LOG(LOG_LEVEL_ERROR, "ERROR reading password");
return 1;
}
}
else if (self->rdp_layer->client_info.enable_token_login
&& len_user > 0
&& len_password == 0
&& (sep = g_strchr(self->rdp_layer->client_info.username, '\x1f')) != NULL)
{
LOG(LOG_LEVEL_DEBUG, "Client supplied a Logon token. Overwritting password with logon token.");
g_strncpy(self->rdp_layer->client_info.password, sep + 1,
sizeof(self->rdp_layer->client_info.password) - 1);
self->rdp_layer->client_info.username[sep - self->rdp_layer->client_info.username] = '\0';
self->rdp_layer->client_info.rdp_autologin = 1;
}
else
{
if (!s_check_rem_and_log(s, len_password + 2, "Parsing [MS-RDPBCGR] TS_INFO_PACKET Password"))
{
return 1;
}
in_uint8s(s, len_password + 2);