FreeRDP/libfreerdp/core/info.c

638 lines
16 KiB
C

/**
* FreeRDP: A Remote Desktop Protocol Implementation
* RDP Client Info
*
* Copyright 2011 Marc-Andre Moreau <marcandre.moreau@gmail.com>
*
* 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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <winpr/crt.h>
#include "timezone.h"
#include "info.h"
#define INFO_TYPE_LOGON 0x00000000
#define INFO_TYPE_LOGON_LONG 0x00000001
#define INFO_TYPE_LOGON_PLAIN_NOTIFY 0x00000002
#define INFO_TYPE_LOGON_EXTENDED_INF 0x00000003
/*
static const char* const INFO_TYPE_LOGON_STRINGS[] =
{
"Logon Info V1",
"Logon Info V2",
"Logon Plain Notify",
"Logon Extended Info"
};
*/
/**
* Read Server Auto Reconnect Cookie (ARC_SC_PRIVATE_PACKET).\n
* @msdn{cc240540}
* @param s stream
* @param settings settings
*/
BOOL rdp_read_server_auto_reconnect_cookie(wStream* s, rdpSettings* settings)
{
ARC_SC_PRIVATE_PACKET* autoReconnectCookie;
autoReconnectCookie = settings->ServerAutoReconnectCookie;
if (Stream_GetRemainingLength(s) < 4+4+4+16)
return FALSE;
Stream_Read_UINT32(s, autoReconnectCookie->cbLen); /* cbLen (4 bytes) */
Stream_Read_UINT32(s, autoReconnectCookie->version); /* version (4 bytes) */
Stream_Read_UINT32(s, autoReconnectCookie->logonId); /* LogonId (4 bytes) */
Stream_Read(s, autoReconnectCookie->arcRandomBits, 16); /* arcRandomBits (16 bytes) */
return TRUE;
}
/**
* Read Client Auto Reconnect Cookie (ARC_CS_PRIVATE_PACKET).\n
* @msdn{cc240541}
* @param s stream
* @param settings settings
*/
BOOL rdp_read_client_auto_reconnect_cookie(wStream* s, rdpSettings* settings)
{
ARC_CS_PRIVATE_PACKET* autoReconnectCookie;
autoReconnectCookie = settings->ClientAutoReconnectCookie;
if (Stream_GetRemainingLength(s) < 28)
return FALSE;
Stream_Read_UINT32(s, autoReconnectCookie->cbLen); /* cbLen (4 bytes) */
Stream_Read_UINT32(s, autoReconnectCookie->version); /* version (4 bytes) */
Stream_Read_UINT32(s, autoReconnectCookie->logonId); /* LogonId (4 bytes) */
Stream_Read(s, autoReconnectCookie->securityVerifier, 16); /* SecurityVerifier */
return TRUE;
}
/**
* Write Client Auto Reconnect Cookie (ARC_CS_PRIVATE_PACKET).\n
* @msdn{cc240541}
* @param s stream
* @param settings settings
*/
void rdp_write_client_auto_reconnect_cookie(wStream* s, rdpSettings* settings)
{
ARC_CS_PRIVATE_PACKET* autoReconnectCookie;
autoReconnectCookie = settings->ClientAutoReconnectCookie;
Stream_Write_UINT32(s, autoReconnectCookie->cbLen); /* cbLen (4 bytes) */
Stream_Write_UINT32(s, autoReconnectCookie->version); /* version (4 bytes) */
Stream_Write_UINT32(s, autoReconnectCookie->logonId); /* LogonId (4 bytes) */
Stream_Write(s, autoReconnectCookie->securityVerifier, 16); /* SecurityVerifier */
}
/**
* Read Extended Info Packet (TS_EXTENDED_INFO_PACKET).\n
* @msdn{cc240476}
* @param s stream
* @param settings settings
*/
BOOL rdp_read_extended_info_packet(wStream* s, rdpSettings* settings)
{
UINT16 clientAddressFamily;
UINT16 cbClientAddress;
UINT16 cbClientDir;
UINT16 cbAutoReconnectLen;
if (Stream_GetRemainingLength(s) < 4)
return FALSE;
Stream_Read_UINT16(s, clientAddressFamily); /* clientAddressFamily */
Stream_Read_UINT16(s, cbClientAddress); /* cbClientAddress */
settings->IPv6Enabled = (clientAddressFamily == ADDRESS_FAMILY_INET6 ? TRUE : FALSE);
if (Stream_GetRemainingLength(s) < cbClientAddress)
return FALSE;
ConvertFromUnicode(CP_UTF8, 0, (WCHAR*) Stream_Pointer(s), cbClientAddress / 2, &settings->ClientAddress, 0, NULL, NULL);
Stream_Seek(s, cbClientAddress);
if (Stream_GetRemainingLength(s) < 2)
return FALSE;
Stream_Read_UINT16(s, cbClientDir); /* cbClientDir */
if (Stream_GetRemainingLength(s) < cbClientDir)
return FALSE;
if (settings->ClientDir)
free(settings->ClientDir);
ConvertFromUnicode(CP_UTF8, 0, (WCHAR*) Stream_Pointer(s), cbClientDir / 2, &settings->ClientDir, 0, NULL, NULL);
Stream_Seek(s, cbClientDir);
if (!rdp_read_client_time_zone(s, settings))
return FALSE;
if (Stream_GetRemainingLength(s) < 10)
return FALSE;
Stream_Seek_UINT32(s); /* clientSessionId, should be set to 0 */
Stream_Read_UINT32(s, settings->PerformanceFlags); /* performanceFlags */
Stream_Read_UINT16(s, cbAutoReconnectLen); /* cbAutoReconnectLen */
if (cbAutoReconnectLen > 0)
return rdp_read_client_auto_reconnect_cookie(s, settings); /* autoReconnectCookie */
/* reserved1 (2 bytes) */
/* reserved2 (2 bytes) */
return TRUE;
}
/**
* Write Extended Info Packet (TS_EXTENDED_INFO_PACKET).\n
* @msdn{cc240476}
* @param s stream
* @param settings settings
*/
void rdp_write_extended_info_packet(wStream* s, rdpSettings* settings)
{
int clientAddressFamily;
WCHAR* clientAddress = NULL;
int cbClientAddress;
WCHAR* clientDir = NULL;
int cbClientDir;
int cbAutoReconnectLen;
clientAddressFamily = settings->IPv6Enabled ? ADDRESS_FAMILY_INET6 : ADDRESS_FAMILY_INET;
cbClientAddress = ConvertToUnicode(CP_UTF8, 0, settings->ClientAddress, -1, &clientAddress, 0) * 2;
cbClientDir = ConvertToUnicode(CP_UTF8, 0, settings->ClientDir, -1, &clientDir, 0) * 2;
cbAutoReconnectLen = (int) settings->ClientAutoReconnectCookie->cbLen;
Stream_Write_UINT16(s, clientAddressFamily); /* clientAddressFamily */
Stream_Write_UINT16(s, cbClientAddress + 2); /* cbClientAddress */
if (cbClientAddress > 0)
Stream_Write(s, clientAddress, cbClientAddress); /* clientAddress */
Stream_Write_UINT16(s, 0);
Stream_Write_UINT16(s, cbClientDir + 2); /* cbClientDir */
if (cbClientDir > 0)
Stream_Write(s, clientDir, cbClientDir); /* clientDir */
Stream_Write_UINT16(s, 0);
rdp_write_client_time_zone(s, settings); /* clientTimeZone */
Stream_Write_UINT32(s, 0); /* clientSessionId, should be set to 0 */
Stream_Write_UINT32(s, settings->PerformanceFlags); /* performanceFlags */
Stream_Write_UINT16(s, cbAutoReconnectLen); /* cbAutoReconnectLen */
if (cbAutoReconnectLen > 0)
rdp_write_client_auto_reconnect_cookie(s, settings); /* autoReconnectCookie */
/* reserved1 (2 bytes) */
/* reserved2 (2 bytes) */
free(clientAddress);
free(clientDir);
}
/**
* Read Info Packet (TS_INFO_PACKET).\n
* @msdn{cc240475}
* @param s stream
* @param settings settings
*/
BOOL rdp_read_info_packet(wStream* s, rdpSettings* settings)
{
UINT32 flags;
UINT16 cbDomain;
UINT16 cbUserName;
UINT16 cbPassword;
UINT16 cbAlternateShell;
UINT16 cbWorkingDir;
if (Stream_GetRemainingLength(s) < 18) // invalid packet
return FALSE;
Stream_Seek_UINT32(s); /* CodePage */
Stream_Read_UINT32(s, flags); /* flags */
settings->AudioCapture = ((flags & RNS_INFO_AUDIOCAPTURE) ? TRUE : FALSE);
settings->AudioPlayback = ((flags & INFO_NOAUDIOPLAYBACK) ? FALSE : TRUE);
settings->AutoLogonEnabled = ((flags & INFO_AUTOLOGON) ? TRUE : FALSE);
settings->RemoteApplicationMode = ((flags & INFO_RAIL) ? TRUE : FALSE);
settings->RemoteConsoleAudio = ((flags & INFO_REMOTECONSOLEAUDIO) ? TRUE : FALSE);
settings->CompressionEnabled = ((flags & INFO_COMPRESSION) ? TRUE : FALSE);
Stream_Read_UINT16(s, cbDomain); /* cbDomain */
Stream_Read_UINT16(s, cbUserName); /* cbUserName */
Stream_Read_UINT16(s, cbPassword); /* cbPassword */
Stream_Read_UINT16(s, cbAlternateShell); /* cbAlternateShell */
Stream_Read_UINT16(s, cbWorkingDir); /* cbWorkingDir */
if (Stream_GetRemainingLength(s) < cbDomain + 2)
return FALSE;
if (cbDomain > 0)
{
ConvertFromUnicode(CP_UTF8, 0, (WCHAR*) Stream_Pointer(s), cbDomain / 2, &settings->Domain, 0, NULL, NULL);
Stream_Seek(s, cbDomain);
}
Stream_Seek(s, 2);
if (Stream_GetRemainingLength(s) < cbUserName + 2)
return FALSE;
if (cbUserName > 0)
{
ConvertFromUnicode(CP_UTF8, 0, (WCHAR*) Stream_Pointer(s), cbUserName / 2, &settings->Username, 0, NULL, NULL);
Stream_Seek(s, cbUserName);
}
Stream_Seek(s, 2);
if (Stream_GetRemainingLength(s) < cbPassword + 2)
return FALSE;
if (cbPassword > 0)
{
ConvertFromUnicode(CP_UTF8, 0, (WCHAR*) Stream_Pointer(s), cbPassword / 2, &settings->Password, 0, NULL, NULL);
Stream_Seek(s, cbPassword);
}
Stream_Seek(s, 2);
if (Stream_GetRemainingLength(s) < cbAlternateShell + 2)
return FALSE;
if (cbAlternateShell > 0)
{
ConvertFromUnicode(CP_UTF8, 0, (WCHAR*) Stream_Pointer(s), cbAlternateShell / 2, &settings->AlternateShell, 0, NULL, NULL);
Stream_Seek(s, cbAlternateShell);
}
Stream_Seek(s, 2);
if (Stream_GetRemainingLength(s) < cbWorkingDir + 2)
return FALSE;
if (cbWorkingDir > 0)
{
ConvertFromUnicode(CP_UTF8, 0, (WCHAR*) Stream_Pointer(s), cbWorkingDir / 2, &settings->ShellWorkingDirectory, 0, NULL, NULL);
Stream_Seek(s, cbWorkingDir);
}
Stream_Seek(s, 2);
if (settings->RdpVersion >= 5)
return rdp_read_extended_info_packet(s, settings); /* extraInfo */
return TRUE;
}
/**
* Write Info Packet (TS_INFO_PACKET).\n
* @msdn{cc240475}
* @param s stream
* @param settings settings
*/
void rdp_write_info_packet(wStream* s, rdpSettings* settings)
{
UINT32 flags;
WCHAR* domain = NULL;
int cbDomain = 0;
WCHAR* userName = NULL;
int cbUserName = 0;
WCHAR* password = NULL;
int cbPassword = 0;
WCHAR* alternateShell = NULL;
int cbAlternateShell = 0;
WCHAR* workingDir = NULL;
int cbWorkingDir = 0;
BOOL usedPasswordCookie = FALSE;
flags = INFO_MOUSE |
INFO_UNICODE |
INFO_LOGONERRORS |
INFO_LOGONNOTIFY |
INFO_MAXIMIZESHELL |
INFO_ENABLEWINDOWSKEY |
INFO_DISABLECTRLALTDEL;
if (settings->AudioCapture)
flags |= RNS_INFO_AUDIOCAPTURE;
if (!settings->AudioPlayback)
flags |= INFO_NOAUDIOPLAYBACK;
if (settings->AutoLogonEnabled)
flags |= INFO_AUTOLOGON;
if (settings->RemoteApplicationMode)
flags |= INFO_RAIL;
if (settings->RemoteConsoleAudio)
flags |= INFO_REMOTECONSOLEAUDIO;
if (settings->CompressionEnabled)
flags |= INFO_COMPRESSION | INFO_PACKET_COMPR_TYPE_RDP6;
if (settings->Domain)
{
cbDomain = ConvertToUnicode(CP_UTF8, 0, settings->Domain, -1, &domain, 0) * 2;
}
else
{
domain = NULL;
cbDomain = 0;
}
cbUserName = ConvertToUnicode(CP_UTF8, 0, settings->Username, -1, &userName, 0) * 2;
if (settings->RedirectionPassword && settings->RedirectionPasswordLength > 0)
{
usedPasswordCookie = TRUE;
password = (WCHAR*) settings->RedirectionPassword;
cbPassword = settings->RedirectionPasswordLength - 2; /* Strip double zero termination */
}
else
{
cbPassword = ConvertToUnicode(CP_UTF8, 0, settings->Password, -1, &password, 0) * 2;
}
cbAlternateShell = ConvertToUnicode(CP_UTF8, 0, settings->AlternateShell, -1, &alternateShell, 0) * 2;
cbWorkingDir = ConvertToUnicode(CP_UTF8, 0, settings->ShellWorkingDirectory, -1, &workingDir, 0) * 2;
Stream_Write_UINT32(s, 0); /* CodePage */
Stream_Write_UINT32(s, flags); /* flags */
Stream_Write_UINT16(s, cbDomain); /* cbDomain */
Stream_Write_UINT16(s, cbUserName); /* cbUserName */
Stream_Write_UINT16(s, cbPassword); /* cbPassword */
Stream_Write_UINT16(s, cbAlternateShell); /* cbAlternateShell */
Stream_Write_UINT16(s, cbWorkingDir); /* cbWorkingDir */
if (cbDomain > 0)
Stream_Write(s, domain, cbDomain);
Stream_Write_UINT16(s, 0);
if (cbUserName > 0)
Stream_Write(s, userName, cbUserName);
Stream_Write_UINT16(s, 0);
if (cbPassword > 0)
Stream_Write(s, password, cbPassword);
Stream_Write_UINT16(s, 0);
if (cbAlternateShell > 0)
Stream_Write(s, alternateShell, cbAlternateShell);
Stream_Write_UINT16(s, 0);
if (cbWorkingDir > 0)
Stream_Write(s, workingDir, cbWorkingDir);
Stream_Write_UINT16(s, 0);
free(domain);
free(userName);
free(alternateShell);
free(workingDir);
if (!usedPasswordCookie)
free(password);
if (settings->RdpVersion >= 5)
rdp_write_extended_info_packet(s, settings); /* extraInfo */
}
/**
* Read Client Info PDU (CLIENT_INFO_PDU).\n
* @msdn{cc240474}
* @param rdp RDP module
* @param s stream
*/
BOOL rdp_recv_client_info(rdpRdp* rdp, wStream* s)
{
UINT16 length;
UINT16 channelId;
UINT16 securityFlags;
if (!rdp_read_header(rdp, s, &length, &channelId))
return FALSE;
if (!rdp_read_security_header(s, &securityFlags))
return FALSE;
if ((securityFlags & SEC_INFO_PKT) == 0)
return FALSE;
if (rdp->settings->DisableEncryption)
{
if (securityFlags & SEC_REDIRECTION_PKT)
{
fprintf(stderr, "Error: SEC_REDIRECTION_PKT unsupported\n");
return FALSE;
}
if (securityFlags & SEC_ENCRYPT)
{
if (!rdp_decrypt(rdp, s, length - 4, securityFlags))
{
fprintf(stderr, "rdp_decrypt failed\n");
return FALSE;
}
}
}
return rdp_read_info_packet(s, rdp->settings);
}
/**
* Send Client Info PDU (CLIENT_INFO_PDU).\n
* @msdn{cc240474}
* @param rdp RDP module
*/
BOOL rdp_send_client_info(rdpRdp* rdp)
{
wStream* s;
BOOL status;
rdp->sec_flags |= SEC_INFO_PKT;
s = Stream_New(NULL, 2048);
rdp_init_stream(rdp, s);
rdp_write_info_packet(s, rdp->settings);
status = rdp_send(rdp, s, MCS_GLOBAL_CHANNEL_ID);
Stream_Free(s, TRUE);
return status;
}
BOOL rdp_recv_logon_info_v1(rdpRdp* rdp, wStream* s)
{
UINT32 cbDomain;
UINT32 cbUserName;
if (Stream_GetRemainingLength(s) < (4 + 52 + 4 + 512 + 4))
return FALSE;
Stream_Read_UINT32(s, cbDomain); /* cbDomain (4 bytes) */
Stream_Seek(s, 52); /* domain (52 bytes) */
Stream_Read_UINT32(s, cbUserName); /* cbUserName (4 bytes) */
Stream_Seek(s, 512); /* userName (512 bytes) */
Stream_Seek_UINT32(s); /* sessionId (4 bytes) */
return TRUE;
}
BOOL rdp_recv_logon_info_v2(rdpRdp* rdp, wStream* s)
{
UINT32 cbDomain;
UINT32 cbUserName;
if (Stream_GetRemainingLength(s) < (2 + 4 + 4 + 4 + 4 + 558))
return FALSE;
Stream_Seek_UINT16(s); /* version (2 bytes) */
Stream_Seek_UINT32(s); /* size (4 bytes) */
Stream_Seek_UINT32(s); /* sessionId (4 bytes) */
Stream_Read_UINT32(s, cbDomain); /* cbDomain (4 bytes) */
Stream_Read_UINT32(s, cbUserName); /* cbUserName (4 bytes) */
Stream_Seek(s, 558); /* pad */
if (Stream_GetRemainingLength(s) < cbDomain+cbUserName)
return FALSE;
Stream_Seek(s, cbDomain); /* domain */
Stream_Seek(s, cbUserName); /* userName */
return TRUE;
}
BOOL rdp_recv_logon_plain_notify(rdpRdp* rdp, wStream* s)
{
if (Stream_GetRemainingLength(s) < 576)
return FALSE;
Stream_Seek(s, 576); /* pad */
return TRUE;
}
BOOL rdp_recv_logon_error_info(rdpRdp* rdp, wStream* s)
{
UINT32 errorNotificationData;
UINT32 errorNotificationType;
if (Stream_GetRemainingLength(s) < 4)
return FALSE;
Stream_Read_UINT32(s, errorNotificationData); /* errorNotificationData (4 bytes) */
Stream_Read_UINT32(s, errorNotificationType); /* errorNotificationType (4 bytes) */
IFCALL(rdp->instance->LogonErrorInfo, rdp->instance, errorNotificationData, errorNotificationType);
return TRUE;
}
BOOL rdp_recv_logon_info_extended(rdpRdp* rdp, wStream* s)
{
UINT32 cbFieldData;
UINT32 fieldsPresent;
UINT16 Length;
if (Stream_GetRemainingLength(s) < 6)
return FALSE;
Stream_Read_UINT16(s, Length); /* The total size in bytes of this structure */
Stream_Read_UINT32(s, fieldsPresent); /* fieldsPresent (4 bytes) */
/* logonFields */
if (fieldsPresent & LOGON_EX_AUTORECONNECTCOOKIE)
{
if (Stream_GetRemainingLength(s) < 4)
return FALSE;
Stream_Read_UINT32(s, cbFieldData); /* cbFieldData (4 bytes) */
if (rdp_read_server_auto_reconnect_cookie(s, rdp->settings) == FALSE)
return FALSE;
}
if (fieldsPresent & LOGON_EX_LOGONERRORS)
{
if (Stream_GetRemainingLength(s) < 4)
return FALSE;
Stream_Read_UINT32(s, cbFieldData); /* cbFieldData (4 bytes) */
if (rdp_recv_logon_error_info(rdp, s) == FALSE)
return FALSE;
}
if (Stream_GetRemainingLength(s) < 570)
return FALSE;
Stream_Seek(s, 570); /* pad */
return TRUE;
}
BOOL rdp_recv_save_session_info(rdpRdp* rdp, wStream* s)
{
UINT32 infoType;
if (Stream_GetRemainingLength(s) < 4)
return FALSE;
Stream_Read_UINT32(s, infoType); /* infoType (4 bytes) */
//fprintf(stderr, "%s\n", INFO_TYPE_LOGON_STRINGS[infoType]);
switch (infoType)
{
case INFO_TYPE_LOGON:
return rdp_recv_logon_info_v1(rdp, s);
case INFO_TYPE_LOGON_LONG:
return rdp_recv_logon_info_v2(rdp, s);
case INFO_TYPE_LOGON_PLAIN_NOTIFY:
return rdp_recv_logon_plain_notify(rdp, s);
case INFO_TYPE_LOGON_EXTENDED_INF:
return rdp_recv_logon_info_extended(rdp, s);
default:
break;
}
return TRUE;
}