FreeRDP/libfreerdp/core/info.c

/**
 * FreeRDP: A Remote Desktop Protocol Implementation
 * RDP Client Info
 *
 * Copyright 2011 Marc-Andre Moreau <marcandre.moreau@gmail.com>
 * Copyright 2015 Thincast Technologies GmbH
 * Copyright 2015 DI (FH) Martin Haimberger <martin.haimberger@thincast.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.
 */

#include <freerdp/config.h>

#include <winpr/crt.h>
#include <winpr/assert.h>

#include <freerdp/crypto/crypto.h>
#include <freerdp/log.h>
#include <freerdp/session.h>
#include <stdio.h>

#include "timezone.h"

#include "info.h"

#define TAG FREERDP_TAG("core.info")

#define logonInfoV2Size (2 + 4 + 4 + 4 + 4)
#define logonInfoV2ReservedSize 558
#define logonInfoV2TotalSize (logonInfoV2Size + logonInfoV2ReservedSize)

static const char* const INFO_TYPE_LOGON_STRINGS[4] = { "Logon Info V1", "Logon Info V2",
	                                                    "Logon Plain Notify",
	                                                    "Logon Extended Info" };

/* This define limits the length of the strings in the label field. */
#define MAX_LABEL_LENGTH 40
struct info_flags_t
{
	UINT32 flag;
	const char* label;
};

static const struct info_flags_t info_flags[] = {
	{ INFO_MOUSE, "INFO_MOUSE" },
	{ INFO_DISABLECTRLALTDEL, "INFO_DISABLECTRLALTDEL" },
	{ INFO_AUTOLOGON, "INFO_AUTOLOGON" },
	{ INFO_UNICODE, "INFO_UNICODE" },
	{ INFO_MAXIMIZESHELL, "INFO_MAXIMIZESHELL" },
	{ INFO_LOGONNOTIFY, "INFO_LOGONNOTIFY" },
	{ INFO_COMPRESSION, "INFO_COMPRESSION" },
	{ INFO_ENABLEWINDOWSKEY, "INFO_ENABLEWINDOWSKEY" },
	{ INFO_REMOTECONSOLEAUDIO, "INFO_REMOTECONSOLEAUDIO" },
	{ INFO_FORCE_ENCRYPTED_CS_PDU, "INFO_FORCE_ENCRYPTED_CS_PDU" },
	{ INFO_RAIL, "INFO_RAIL" },
	{ INFO_LOGONERRORS, "INFO_LOGONERRORS" },
	{ INFO_MOUSE_HAS_WHEEL, "INFO_MOUSE_HAS_WHEEL" },
	{ INFO_PASSWORD_IS_SC_PIN, "INFO_PASSWORD_IS_SC_PIN" },
	{ INFO_NOAUDIOPLAYBACK, "INFO_NOAUDIOPLAYBACK" },
	{ INFO_USING_SAVED_CREDS, "INFO_USING_SAVED_CREDS" },
	{ INFO_AUDIOCAPTURE, "INFO_AUDIOCAPTURE" },
	{ INFO_VIDEO_DISABLE, "INFO_VIDEO_DISABLE" },
	{ INFO_HIDEF_RAIL_SUPPORTED, "INFO_HIDEF_RAIL_SUPPORTED" },
};

static BOOL rdp_read_info_null_string(const char* what, UINT32 flags, wStream* s, size_t cbLen,
                                      CHAR** dst, size_t max, BOOL isNullTerminated)
{
	CHAR* ret = NULL;

	const BOOL unicode = flags & INFO_UNICODE;
	const size_t nullSize = unicode ? sizeof(WCHAR) : sizeof(CHAR);

	if (!Stream_CheckAndLogRequiredLength(TAG, s, (size_t)(cbLen)))
		return FALSE;

	if (cbLen > 0)
	{
		if (isNullTerminated && (max > 0))
			max -= nullSize;

		if ((cbLen > max) || (unicode && ((cbLen % 2) != 0)))
		{
			WLog_ERR(TAG, "protocol error: %s has invalid value: %" PRIuz "", what, cbLen);
			return FALSE;
		}

		if (unicode)
		{
			size_t len = 0;
			ret = Stream_Read_UTF16_String_As_UTF8(s, cbLen / sizeof(WCHAR), &len);
			if (!ret && (cbLen > 0))
			{
				WLog_ERR(TAG, "protocol error: no data to read for %s [expected %" PRIuz "]", what,
				         cbLen);
				return FALSE;
			}
		}
		else
		{
			const char* domain = (const char*)Stream_Pointer(s);
			if (!Stream_SafeSeek(s, cbLen))
			{
				WLog_ERR(TAG, "protocol error: no data to read for %s [expected %" PRIuz "]", what,
				         cbLen);
				return FALSE;
			}

			ret = calloc(cbLen + 1, nullSize);
			if (!ret)
				return FALSE;
			memcpy(ret, domain, cbLen);
		}
	}

	free(*dst);
	*dst = ret;
	return TRUE;
}

static char* rdp_info_package_flags_description(UINT32 flags)
{
	char* result;
	size_t maximum_size = 1 + MAX_LABEL_LENGTH * ARRAYSIZE(info_flags);
	size_t i;

	result = calloc(maximum_size, sizeof(char));

	if (!result)
		return 0;

	for (i = 0; i < ARRAYSIZE(info_flags); i++)
	{
		const struct info_flags_t* cur = &info_flags[i];
		if (cur->flag & flags)
		{
			winpr_str_append(cur->label, result, maximum_size, "|");
		}
	}

	return result;
}

static BOOL rdp_compute_client_auto_reconnect_cookie(rdpRdp* rdp)
{
	BYTE ClientRandom[32] = { 0 };
	BYTE AutoReconnectRandom[32] = { 0 };
	ARC_SC_PRIVATE_PACKET* serverCookie;
	ARC_CS_PRIVATE_PACKET* clientCookie;

	WINPR_ASSERT(rdp);
	rdpSettings* settings = rdp->settings;
	WINPR_ASSERT(settings);

	serverCookie = settings->ServerAutoReconnectCookie;
	clientCookie = settings->ClientAutoReconnectCookie;
	clientCookie->cbLen = 28;
	clientCookie->version = serverCookie->version;
	clientCookie->logonId = serverCookie->logonId;
	ZeroMemory(clientCookie->securityVerifier, 16);
	ZeroMemory(AutoReconnectRandom, sizeof(AutoReconnectRandom));
	CopyMemory(AutoReconnectRandom, serverCookie->arcRandomBits, 16);
	ZeroMemory(ClientRandom, sizeof(ClientRandom));

	if (settings->SelectedProtocol == PROTOCOL_RDP)
		CopyMemory(ClientRandom, settings->ClientRandom, settings->ClientRandomLength);

	/* SecurityVerifier = HMAC_MD5(AutoReconnectRandom, ClientRandom) */

	if (!winpr_HMAC(WINPR_MD_MD5, AutoReconnectRandom, 16, ClientRandom, 32,
	                clientCookie->securityVerifier, 16))
		return FALSE;

	return TRUE;
}

/**
 * Read Server Auto Reconnect Cookie (ARC_SC_PRIVATE_PACKET).
 * msdn{cc240540}
 */

static BOOL rdp_read_server_auto_reconnect_cookie(rdpRdp* rdp, wStream* s, logon_info_ex* info)
{
	BYTE* p;
	ARC_SC_PRIVATE_PACKET* autoReconnectCookie;
	rdpSettings* settings = rdp->settings;
	autoReconnectCookie = settings->ServerAutoReconnectCookie;

	if (!Stream_CheckAndLogRequiredLength(TAG, s, 28))
		return FALSE;

	Stream_Read_UINT32(s, autoReconnectCookie->cbLen); /* cbLen (4 bytes) */

	if (autoReconnectCookie->cbLen != 28)
	{
		WLog_ERR(TAG, "ServerAutoReconnectCookie.cbLen != 28");
		return FALSE;
	}

	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) */
	p = autoReconnectCookie->arcRandomBits;
	WLog_DBG(TAG,
	         "ServerAutoReconnectCookie: Version: %" PRIu32 " LogonId: %" PRIu32
	         " SecurityVerifier: "
	         "%02" PRIX8 "%02" PRIX8 "%02" PRIX8 "%02" PRIX8 "%02" PRIX8 "%02" PRIX8 "%02" PRIX8
	         "%02" PRIX8 ""
	         "%02" PRIX8 "%02" PRIX8 "%02" PRIX8 "%02" PRIX8 "%02" PRIX8 "%02" PRIX8 "%02" PRIX8
	         "%02" PRIX8 "",
	         autoReconnectCookie->version, autoReconnectCookie->logonId, p[0], p[1], p[2], p[3],
	         p[4], p[5], p[6], p[7], p[8], p[9], p[10], p[11], p[12], p[13], p[14], p[15]);
	info->LogonId = autoReconnectCookie->logonId;
	CopyMemory(info->ArcRandomBits, p, 16);

	if ((settings->PrintReconnectCookie))
	{
		char* base64;
		base64 = crypto_base64_encode((BYTE*)autoReconnectCookie, sizeof(ARC_SC_PRIVATE_PACKET));
		WLog_INFO(TAG, "Reconnect-cookie: %s", base64);
		free(base64);
	}

	return TRUE;
}

/**
 * Read Client Auto Reconnect Cookie (ARC_CS_PRIVATE_PACKET).
 * msdn{cc240541}
 */

static BOOL rdp_read_client_auto_reconnect_cookie(rdpRdp* rdp, wStream* s)
{
	ARC_CS_PRIVATE_PACKET* autoReconnectCookie;
	rdpSettings* settings = rdp->settings;
	autoReconnectCookie = settings->ClientAutoReconnectCookie;

	if (!Stream_CheckAndLogRequiredLength(TAG, 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).
 * msdn{cc240541}
 */

static BOOL rdp_write_client_auto_reconnect_cookie(rdpRdp* rdp, wStream* s)
{
	BYTE* p;
	ARC_CS_PRIVATE_PACKET* autoReconnectCookie;
	rdpSettings* settings;

	WINPR_ASSERT(rdp);

	settings = rdp->settings;
	WINPR_ASSERT(settings);

	autoReconnectCookie = settings->ClientAutoReconnectCookie;
	WINPR_ASSERT(autoReconnectCookie);

	p = autoReconnectCookie->securityVerifier;
	WINPR_ASSERT(p);

	WLog_DBG(TAG,
	         "ClientAutoReconnectCookie: Version: %" PRIu32 " LogonId: %" PRIu32 " ArcRandomBits: "
	         "%02" PRIX8 "%02" PRIX8 "%02" PRIX8 "%02" PRIX8 "%02" PRIX8 "%02" PRIX8 "%02" PRIX8
	         "%02" PRIX8 ""
	         "%02" PRIX8 "%02" PRIX8 "%02" PRIX8 "%02" PRIX8 "%02" PRIX8 "%02" PRIX8 "%02" PRIX8
	         "%02" PRIX8 "",
	         autoReconnectCookie->version, autoReconnectCookie->logonId, p[0], p[1], p[2], p[3],
	         p[4], p[5], p[6], p[7], p[8], p[9], p[10], p[11], p[12], p[13], p[14], p[15]);
	if (!Stream_EnsureRemainingCapacity(s, 12ull + 16ull))
		return FALSE;
	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 (16 bytes) */
	return TRUE;
}

/*
 * Get the cbClientAddress size limit
 * see [MS-RDPBCGR] 2.2.1.11.1.1.1 Extended Info Packet (TS_EXTENDED_INFO_PACKET)
 */

static size_t rdp_get_client_address_max_size(const rdpRdp* rdp)
{
	UINT32 version;
	rdpSettings* settings;

	WINPR_ASSERT(rdp);

	settings = rdp->settings;
	WINPR_ASSERT(settings);

	version = freerdp_settings_get_uint32(settings, FreeRDP_RdpVersion);
	if (version < RDP_VERSION_10_0)
		return 64;
	return 80;
}

/**
 * Read Extended Info Packet (TS_EXTENDED_INFO_PACKET).
 * msdn{cc240476}
 */

static BOOL rdp_read_extended_info_packet(rdpRdp* rdp, wStream* s)
{
	UINT16 clientAddressFamily;
	UINT16 cbClientAddress;
	UINT16 cbClientDir;
	UINT16 cbAutoReconnectLen;
	rdpSettings* settings = rdp->settings;

	if (!Stream_CheckAndLogRequiredLength(TAG, s, 4))
		return FALSE;

	Stream_Read_UINT16(s, clientAddressFamily); /* clientAddressFamily (2 bytes) */
	Stream_Read_UINT16(s, cbClientAddress);     /* cbClientAddress (2 bytes) */

	settings->IPv6Enabled = (clientAddressFamily == ADDRESS_FAMILY_INET6 ? TRUE : FALSE);

	if (!rdp_read_info_null_string("cbClientAddress", INFO_UNICODE, s, cbClientAddress,
	                               &settings->ClientAddress, rdp_get_client_address_max_size(rdp),
	                               TRUE))
		return FALSE;

	if (!Stream_CheckAndLogRequiredLength(TAG, s, 2))
		return FALSE;

	Stream_Read_UINT16(s, cbClientDir); /* cbClientDir (2 bytes) */

	/* cbClientDir is the size in bytes of the character data in the clientDir field.
	 * This size includes the length of the mandatory null terminator.
	 * The maximum allowed value is 512 bytes.
	 * Note: Although according to [MS-RDPBCGR 2.2.1.11.1.1.1] the null terminator
	 * is mandatory the Microsoft Android client (starting with version 8.1.31.44)
	 * sets cbClientDir to 0.
	 */

	if (!rdp_read_info_null_string("cbClientDir", INFO_UNICODE, s, cbClientDir,
	                               &settings->ClientDir, 512, TRUE))
		return FALSE;

	/**
	 * down below all fields are optional but if one field is not present,
	 * then all of the subsequent fields also MUST NOT be present.
	 */

	/* optional: clientTimeZone (172 bytes) */
	if (Stream_GetRemainingLength(s) == 0)
		goto end;

	if (!rdp_read_client_time_zone(s, settings))
		return FALSE;

	/* optional: clientSessionId (4 bytes), should be set to 0 */
	if (Stream_GetRemainingLength(s) == 0)
		goto end;
	if (!Stream_CheckAndLogRequiredLength(TAG, s, 4))
		return FALSE;

	Stream_Read_UINT32(s, settings->ClientSessionId);

	/* optional: performanceFlags (4 bytes) */
	if (Stream_GetRemainingLength(s) == 0)
		goto end;

	if (!Stream_CheckAndLogRequiredLength(TAG, s, 4))
		return FALSE;

	Stream_Read_UINT32(s, settings->PerformanceFlags);
	freerdp_performance_flags_split(settings);

	/* optional: cbAutoReconnectLen (2 bytes) */
	if (Stream_GetRemainingLength(s) == 0)
		goto end;

	if (!Stream_CheckAndLogRequiredLength(TAG, s, 2))
		return FALSE;

	Stream_Read_UINT16(s, cbAutoReconnectLen);

	/* optional: autoReconnectCookie (28 bytes) */
	/* must be present if cbAutoReconnectLen is > 0 */
	if (cbAutoReconnectLen > 0)
	{
		if (!rdp_read_client_auto_reconnect_cookie(rdp, s))
			return FALSE;
	}

	/* skip reserved1 and reserved2 fields */
	if (Stream_GetRemainingLength(s) == 0)
		goto end;

	if (!Stream_SafeSeek(s, 2))
		return FALSE;

	if (Stream_GetRemainingLength(s) == 0)
		goto end;

	if (!Stream_SafeSeek(s, 2))
		return FALSE;

	if (Stream_GetRemainingLength(s) == 0)
		goto end;

	if (!Stream_CheckAndLogRequiredLength(TAG, s, 2))
		return FALSE;
	{
		UINT16 cbDynamicDSTTimeZoneKeyName;

		Stream_Read_UINT16(s, cbDynamicDSTTimeZoneKeyName);

		if (!rdp_read_info_null_string("cbDynamicDSTTimeZoneKeyName", INFO_UNICODE, s,
		                               cbDynamicDSTTimeZoneKeyName,
		                               &settings->DynamicDSTTimeZoneKeyName, 254, FALSE))
			return FALSE;

		if (Stream_GetRemainingLength(s) == 0)
			goto end;

		if (!Stream_CheckAndLogRequiredLength(TAG, s, 2))
			return FALSE;
		Stream_Read_UINT16(s, settings->DynamicDaylightTimeDisabled);
		if (settings->DynamicDaylightTimeDisabled > 1)
		{
			WLog_WARN(TAG,
			          "[MS-RDPBCGR] 2.2.1.11.1.1.1 Extended Info Packet "
			          "(TS_EXTENDED_INFO_PACKET)::dynamicDaylightTimeDisabled value %" PRIu16
			          " not allowed in [0,1]",
			          settings->DynamicDaylightTimeDisabled);
			return FALSE;
		}
	}

end:
	return TRUE;
}

/**
 * Write Extended Info Packet (TS_EXTENDED_INFO_PACKET).
 * msdn{cc240476}
 */

static BOOL rdp_write_extended_info_packet(rdpRdp* rdp, wStream* s)
{
	BOOL ret = FALSE;
	UINT16 clientAddressFamily;
	WCHAR* clientAddress = NULL;
	size_t cbClientAddress;
	const size_t cbClientAddressMax = rdp_get_client_address_max_size(rdp);
	WCHAR* clientDir = NULL;
	size_t cbClientDir;
	const size_t cbClientDirMax = 512;
	UINT16 cbAutoReconnectCookie;
	rdpSettings* settings;
	if (!rdp || !rdp->settings || !s)
		return FALSE;
	settings = rdp->settings;
	clientAddressFamily = settings->IPv6Enabled ? ADDRESS_FAMILY_INET6 : ADDRESS_FAMILY_INET;
	clientAddress = ConvertUtf8ToWCharAlloc(settings->ClientAddress, &cbClientAddress);

	if (cbClientAddress > (UINT16_MAX / sizeof(WCHAR)))
		goto fail;

	if (cbClientAddress > 0)
	{
		cbClientAddress = (UINT16)(cbClientAddress + 1) * sizeof(WCHAR);
		if (cbClientAddress > cbClientAddressMax)
		{
			WLog_WARN(TAG,
			          "[%s] the client address %s [%" PRIuz "] exceeds the limit of %" PRIuz
			          ", truncating.",
			          __FUNCTION__, settings->ClientAddress, cbClientAddress, cbClientAddressMax);

			clientAddress[(cbClientAddressMax / sizeof(WCHAR)) - 1] = '\0';
			cbClientAddress = cbClientAddressMax;
		}
	}

	clientDir = ConvertUtf8ToWCharAlloc(settings->ClientDir, &cbClientDir);
	if (cbClientDir > (UINT16_MAX / sizeof(WCHAR)))
		goto fail;

	if (cbClientDir > 0)
	{
		cbClientDir = (UINT16)(cbClientDir + 1) * sizeof(WCHAR);
		if (cbClientDir > cbClientDirMax)
		{
			WLog_WARN(TAG,
			          "[%s] the client dir %s [%" PRIuz "] exceeds the limit of %" PRIuz
			          ", truncating.",
			          __FUNCTION__, settings->ClientDir, cbClientDir, cbClientDirMax);

			clientDir[(cbClientDirMax / sizeof(WCHAR)) - 1] = '\0';
			cbClientDir = cbClientDirMax;
		}
	}

	if (settings->ServerAutoReconnectCookie->cbLen > UINT16_MAX)
		goto fail;
	cbAutoReconnectCookie = (UINT16)settings->ServerAutoReconnectCookie->cbLen;

	if (!Stream_EnsureRemainingCapacity(s, 4ull + cbClientAddress + 2ull + cbClientDir))
		goto fail;

	Stream_Write_UINT16(s, clientAddressFamily); /* clientAddressFamily (2 bytes) */
	Stream_Write_UINT16(s, cbClientAddress);     /* cbClientAddress (2 bytes) */

	Stream_Write(s, clientAddress, cbClientAddress); /* clientAddress */

	Stream_Write_UINT16(s, cbClientDir); /* cbClientDir (2 bytes) */

	Stream_Write(s, clientDir, cbClientDir); /* clientDir */

	if (!rdp_write_client_time_zone(s, settings)) /* clientTimeZone (172 bytes) */
		goto fail;

	if (!Stream_EnsureRemainingCapacity(s, 10ull))
		goto fail;

	Stream_Write_UINT32(
	    s, settings->ClientSessionId); /* clientSessionId (4 bytes), should be set to 0 */
	freerdp_performance_flags_make(settings);
	Stream_Write_UINT32(s, settings->PerformanceFlags); /* performanceFlags (4 bytes) */
	Stream_Write_UINT16(s, cbAutoReconnectCookie);      /* cbAutoReconnectCookie (2 bytes) */

	if (cbAutoReconnectCookie > 0)
	{
		if (!rdp_compute_client_auto_reconnect_cookie(rdp))
			goto fail;
		if (!rdp_write_client_auto_reconnect_cookie(rdp, s)) /* autoReconnectCookie */
			goto fail;

		if (!Stream_EnsureRemainingCapacity(s, 4ull))
			goto fail;
		Stream_Write_UINT16(s, 0); /* reserved1 (2 bytes) */
		Stream_Write_UINT16(s, 0); /* reserved2 (2 bytes) */
	}

	if (settings->EarlyCapabilityFlags & RNS_UD_CS_SUPPORT_DYNAMIC_TIME_ZONE)
	{
		if (!Stream_EnsureRemainingCapacity(s, 10 + 254 * sizeof(WCHAR)))
			goto fail;

		/* skip reserved1 and reserved2 fields */
		Stream_Seek(s, 4);

		size_t rlen = 0;
		const char* tz = freerdp_settings_get_string(settings, FreeRDP_DynamicDSTTimeZoneKeyName);
		if (tz)
			rlen = strnlen(tz, 254);
		Stream_Write_UINT16(s, (UINT16)rlen);
		if (Stream_Write_UTF16_String_From_UTF8(s, rlen / sizeof(WCHAR), tz, rlen, FALSE) < 0)
			goto fail;
		Stream_Write_UINT16(s, settings->DynamicDaylightTimeDisabled ? 0x01 : 0x00);
	}

	ret = TRUE;
fail:
	free(clientAddress);
	free(clientDir);
	return ret;
}

static BOOL rdp_read_info_string(UINT32 flags, wStream* s, size_t cbLenNonNull, CHAR** dst,
                                 size_t max)
{
	union
	{
		char c;
		WCHAR w;
		BYTE b[2];
	} terminator;
	CHAR* ret = NULL;

	const BOOL unicode = flags & INFO_UNICODE;
	const size_t nullSize = unicode ? sizeof(WCHAR) : sizeof(CHAR);

	if (!Stream_CheckAndLogRequiredLength(TAG, s, (size_t)(cbLenNonNull + nullSize)))
		return FALSE;

	if (cbLenNonNull > 0)
	{
		WCHAR domain[512 / sizeof(WCHAR) + sizeof(WCHAR)] = { 0 };
		/* cbDomain is the size in bytes of the character data in the Domain field.
		 * This size excludes (!) the length of the mandatory null terminator.
		 * Maximum value including the mandatory null terminator: 512
		 */
		if ((cbLenNonNull % 2) || (cbLenNonNull > (max - nullSize)))
		{
			WLog_ERR(TAG, "protocol error: invalid value: %" PRIuz "", cbLenNonNull);
			return FALSE;
		}

		Stream_Read(s, domain, cbLenNonNull);

		if (unicode)
		{
			size_t len = 0;
			ret = ConvertWCharNToUtf8Alloc(domain, ARRAYSIZE(domain), &len);
			if (!ret || (len == 0))
			{
				free(ret);
				WLog_ERR(TAG, "failed to convert Domain string");
				return FALSE;
			}
		}
		else
		{
			ret = calloc(cbLenNonNull + 1, nullSize);
			if (!ret)
				return FALSE;
			memcpy(ret, domain, cbLenNonNull);
		}
	}

	terminator.w = L'\0';
	Stream_Read(s, terminator.b, nullSize);

	if (terminator.w != L'\0')
	{
		WLog_ERR(TAG, "protocol error: Domain must be null terminated");
		free(ret);
		return FALSE;
	}

	*dst = ret;
	return TRUE;
}

/**
 * Read Info Packet (TS_INFO_PACKET).
 * msdn{cc240475}
 */

static BOOL rdp_read_info_packet(rdpRdp* rdp, wStream* s, UINT16 tpktlength)
{
	BOOL smallsize = FALSE;
	UINT32 flags;
	UINT16 cbDomain;
	UINT16 cbUserName;
	UINT16 cbPassword;
	UINT16 cbAlternateShell;
	UINT16 cbWorkingDir;
	UINT32 CompressionLevel;
	rdpSettings* settings = rdp->settings;

	if (!Stream_CheckAndLogRequiredLength(TAG, s, 18))
		return FALSE;

	Stream_Read_UINT32(s, settings->KeyboardCodePage); /* CodePage (4 bytes ) */
	Stream_Read_UINT32(s, flags);                      /* flags (4 bytes) */
	settings->AudioCapture = ((flags & 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->HiDefRemoteApp = ((flags & INFO_HIDEF_RAIL_SUPPORTED) ? TRUE : FALSE);
	settings->RemoteConsoleAudio = ((flags & INFO_REMOTECONSOLEAUDIO) ? TRUE : FALSE);
	settings->CompressionEnabled = ((flags & INFO_COMPRESSION) ? TRUE : FALSE);
	settings->LogonNotify = ((flags & INFO_LOGONNOTIFY) ? TRUE : FALSE);
	settings->MouseHasWheel = ((flags & INFO_MOUSE_HAS_WHEEL) ? TRUE : FALSE);
	settings->DisableCtrlAltDel = ((flags & INFO_DISABLECTRLALTDEL) ? TRUE : FALSE);
	settings->ForceEncryptedCsPdu = ((flags & INFO_FORCE_ENCRYPTED_CS_PDU) ? TRUE : FALSE);
	settings->PasswordIsSmartcardPin = ((flags & INFO_PASSWORD_IS_SC_PIN) ? TRUE : FALSE);

	if (flags & INFO_COMPRESSION)
	{
		CompressionLevel = ((flags & 0x00001E00) >> 9);
		settings->CompressionLevel = CompressionLevel;
	}

	/* RDP 4 and 5 have smaller credential limits */
	if (settings->RdpVersion < RDP_VERSION_5_PLUS)
		smallsize = TRUE;

	Stream_Read_UINT16(s, cbDomain);         /* cbDomain (2 bytes) */
	Stream_Read_UINT16(s, cbUserName);       /* cbUserName (2 bytes) */
	Stream_Read_UINT16(s, cbPassword);       /* cbPassword (2 bytes) */
	Stream_Read_UINT16(s, cbAlternateShell); /* cbAlternateShell (2 bytes) */
	Stream_Read_UINT16(s, cbWorkingDir);     /* cbWorkingDir (2 bytes) */

	if (!rdp_read_info_string(flags, s, cbDomain, &settings->Domain, smallsize ? 52 : 512))
		return FALSE;

	if (!rdp_read_info_string(flags, s, cbUserName, &settings->Username, smallsize ? 44 : 512))
		return FALSE;

	if (!rdp_read_info_string(flags, s, cbPassword, &settings->Password, smallsize ? 32 : 512))
		return FALSE;

	if (!rdp_read_info_string(flags, s, cbAlternateShell, &settings->AlternateShell, 512))
		return FALSE;

	if (!rdp_read_info_string(flags, s, cbWorkingDir, &settings->ShellWorkingDirectory, 512))
		return FALSE;

	if (settings->RdpVersion >= RDP_VERSION_5_PLUS)
		return rdp_read_extended_info_packet(rdp, s); /* extraInfo */

	return tpkt_ensure_stream_consumed(s, tpktlength);
}

/**
 * Write Info Packet (TS_INFO_PACKET).
 * msdn{cc240475}
 */

static BOOL rdp_write_info_packet(rdpRdp* rdp, wStream* s)
{
	BOOL ret = FALSE;
	UINT32 flags;
	WCHAR* domainW = NULL;
	size_t cbDomain = 0;
	WCHAR* userNameW = NULL;
	size_t cbUserName = 0;
	WCHAR* passwordW = NULL;
	size_t cbPassword = 0;
	WCHAR* alternateShellW = NULL;
	size_t cbAlternateShell = 0;
	WCHAR* workingDirW = NULL;
	size_t cbWorkingDir = 0;
	BOOL usedPasswordCookie = FALSE;
	rdpSettings* settings;

	if (!rdp || !s || !rdp->settings)
		return FALSE;

	settings = rdp->settings;
	WINPR_ASSERT(settings);

	flags = INFO_MOUSE | INFO_UNICODE | INFO_LOGONERRORS | INFO_MAXIMIZESHELL |
	        INFO_ENABLEWINDOWSKEY | INFO_DISABLECTRLALTDEL | INFO_MOUSE_HAS_WHEEL |
	        INFO_FORCE_ENCRYPTED_CS_PDU;

	if (settings->SmartcardLogon)
	{
		flags |= INFO_AUTOLOGON;
		flags |= INFO_PASSWORD_IS_SC_PIN;
	}

	if (settings->AudioCapture)
		flags |= INFO_AUDIOCAPTURE;

	if (!settings->AudioPlayback)
		flags |= INFO_NOAUDIOPLAYBACK;

	if (settings->VideoDisable)
		flags |= INFO_VIDEO_DISABLE;

	if (settings->AutoLogonEnabled)
		flags |= INFO_AUTOLOGON;

	if (settings->RemoteApplicationMode)
	{
		if (settings->HiDefRemoteApp)
			flags |= INFO_HIDEF_RAIL_SUPPORTED;

		flags |= INFO_RAIL;
	}

	if (settings->RemoteConsoleAudio)
		flags |= INFO_REMOTECONSOLEAUDIO;

	if (settings->CompressionEnabled)
	{
		flags |= INFO_COMPRESSION;
		flags |= ((settings->CompressionLevel << 9) & 0x00001E00);
	}

	if (settings->LogonNotify)
		flags |= INFO_LOGONNOTIFY;

	if (settings->PasswordIsSmartcardPin)
		flags |= INFO_PASSWORD_IS_SC_PIN;

	{
		char* flags_description = rdp_info_package_flags_description(flags);

		if (flags_description)
		{
			WLog_DBG(TAG, "Client Info Packet Flags = %s", flags_description);
			free(flags_description);
		}
	}

	domainW = freerdp_settings_get_string_as_utf16(settings, FreeRDP_Domain, &cbDomain);
	if (cbDomain > UINT16_MAX / sizeof(WCHAR))
		goto fail;
	cbDomain *= sizeof(WCHAR);

	/* user name provided by the expert for connecting to the novice computer */
	userNameW = freerdp_settings_get_string_as_utf16(settings, FreeRDP_Username, &cbUserName);
	if (cbUserName > UINT16_MAX / sizeof(WCHAR))
		goto fail;
	cbUserName *= sizeof(WCHAR);

	const char* pin = "*";
	if (!settings->RemoteAssistanceMode)
	{
		/* Ignore redirection password if we´re using smartcard and have the pin as password */
		if (((flags & INFO_PASSWORD_IS_SC_PIN) == 0) && settings->RedirectionPassword &&
		    (settings->RedirectionPasswordLength > 0))
		{
			union
			{
				BYTE* bp;
				WCHAR* wp;
			} ptrconv;

			if (settings->RedirectionPasswordLength > UINT16_MAX)
				goto fail;
			usedPasswordCookie = TRUE;

			ptrconv.bp = settings->RedirectionPassword;
			passwordW = ptrconv.wp;
			cbPassword = (UINT16)settings->RedirectionPasswordLength;
		}
		else
			pin = freerdp_settings_get_string(settings, FreeRDP_Password);
	}

	if (!usedPasswordCookie && pin)
	{
		passwordW = ConvertUtf8ToWCharAlloc(pin, &cbPassword);
		if (cbPassword > UINT16_MAX / sizeof(WCHAR))
			goto fail;
		cbPassword = (UINT16)cbPassword * sizeof(WCHAR);
	}

	const char* altShell;
	if (!settings->RemoteAssistanceMode)
		altShell = freerdp_settings_get_string(settings, FreeRDP_AlternateShell);
	else if (settings->RemoteAssistancePassStub)
		altShell = "*"; /* This field MUST be filled with "*" */
	else
		altShell = freerdp_settings_get_string(settings, FreeRDP_RemoteAssistancePassword);

	if (altShell && strlen(altShell) > 0)
	{
		alternateShellW = ConvertUtf8ToWCharAlloc(altShell, &cbAlternateShell);
		if (!alternateShellW || (cbAlternateShell > (UINT16_MAX / sizeof(WCHAR))))
			goto fail;
		cbAlternateShell = (UINT16)cbAlternateShell * sizeof(WCHAR);
	}

	size_t inputId = FreeRDP_RemoteAssistanceSessionId;
	if (!freerdp_settings_get_bool(settings, FreeRDP_RemoteAssistanceMode))
		inputId = FreeRDP_ShellWorkingDirectory;

	workingDirW = freerdp_settings_get_string_as_utf16(settings, inputId, &cbWorkingDir);
	if (cbWorkingDir > (UINT16_MAX / sizeof(WCHAR)))
		goto fail;
	cbWorkingDir = (UINT16)cbWorkingDir * sizeof(WCHAR);

	if (!Stream_EnsureRemainingCapacity(s, 18ull + cbDomain + cbUserName + cbPassword +
	                                           cbAlternateShell + cbWorkingDir + 5 * sizeof(WCHAR)))
		goto fail;

	Stream_Write_UINT32(s, settings->KeyboardCodePage); /* CodePage (4 bytes) */
	Stream_Write_UINT32(s, flags);                      /* flags (4 bytes) */
	Stream_Write_UINT16(s, (UINT32)cbDomain);           /* cbDomain (2 bytes) */
	Stream_Write_UINT16(s, (UINT32)cbUserName);         /* cbUserName (2 bytes) */
	Stream_Write_UINT16(s, (UINT32)cbPassword);         /* cbPassword (2 bytes) */
	Stream_Write_UINT16(s, (UINT32)cbAlternateShell);   /* cbAlternateShell (2 bytes) */
	Stream_Write_UINT16(s, (UINT32)cbWorkingDir);       /* cbWorkingDir (2 bytes) */

	Stream_Write(s, domainW, cbDomain);

	/* the mandatory null terminator */
	Stream_Write_UINT16(s, 0);

	Stream_Write(s, userNameW, cbUserName);

	/* the mandatory null terminator */
	Stream_Write_UINT16(s, 0);

	Stream_Write(s, passwordW, cbPassword);

	/* the mandatory null terminator */
	Stream_Write_UINT16(s, 0);

	Stream_Write(s, alternateShellW, cbAlternateShell);

	/* the mandatory null terminator */
	Stream_Write_UINT16(s, 0);

	Stream_Write(s, workingDirW, cbWorkingDir);

	/* the mandatory null terminator */
	Stream_Write_UINT16(s, 0);
	ret = TRUE;
fail:
	free(domainW);
	free(userNameW);
	free(alternateShellW);
	free(workingDirW);

	if (!usedPasswordCookie)
		free(passwordW);

	if (!ret)
		return FALSE;

	if (settings->RdpVersion >= RDP_VERSION_5_PLUS)
		ret = rdp_write_extended_info_packet(rdp, s); /* extraInfo */

	return ret;
}

/**
 * Read Client Info PDU (CLIENT_INFO_PDU).
 * msdn{cc240474}
 * @param rdp RDP module
 * @param s stream
 */

BOOL rdp_recv_client_info(rdpRdp* rdp, wStream* s)
{
	UINT16 length;
	UINT16 channelId;
	UINT16 securityFlags = 0;

	WINPR_ASSERT(rdp_get_state(rdp) == CONNECTION_STATE_SECURE_SETTINGS_EXCHANGE);

	if (!rdp_read_header(rdp, s, &length, &channelId))
		return FALSE;

	if (!rdp_read_security_header(s, &securityFlags, &length))
		return FALSE;

	if ((securityFlags & SEC_INFO_PKT) == 0)
		return FALSE;

	if (rdp->settings->UseRdpSecurityLayer)
	{
		if (securityFlags & SEC_REDIRECTION_PKT)
		{
			WLog_ERR(TAG, "Error: SEC_REDIRECTION_PKT unsupported");
			return FALSE;
		}

		if (securityFlags & SEC_ENCRYPT)
		{
			if (!rdp_decrypt(rdp, s, &length, securityFlags))
			{
				WLog_ERR(TAG, "rdp_decrypt failed");
				return FALSE;
			}
		}
	}

	return rdp_read_info_packet(rdp, s, length);
}

/**
 * Send Client Info PDU (CLIENT_INFO_PDU).
 * msdn{cc240474}
 * @param rdp RDP module
 */

BOOL rdp_send_client_info(rdpRdp* rdp)
{
	wStream* s;
	WINPR_ASSERT(rdp);
	rdp->sec_flags |= SEC_INFO_PKT;
	s = rdp_send_stream_init(rdp);

	if (!s)
	{
		WLog_ERR(TAG, "Stream_New failed!");
		return FALSE;
	}

	if (!rdp_write_info_packet(rdp, s))
	{
		Stream_Release(s);
		return FALSE;
	}
	return rdp_send(rdp, s, MCS_GLOBAL_CHANNEL_ID);
}

static BOOL rdp_recv_logon_info_v1(rdpRdp* rdp, wStream* s, logon_info* info)
{
	UINT32 cbDomain;
	UINT32 cbUserName;
	union
	{
		BYTE* bp;
		WCHAR* wp;
	} ptrconv;

	WINPR_UNUSED(rdp);
	ZeroMemory(info, sizeof(*info));

	if (!Stream_CheckAndLogRequiredLength(TAG, s, 576))
		return FALSE;

	Stream_Read_UINT32(s, cbDomain); /* cbDomain (4 bytes) */

	/* cbDomain is the size of the Unicode character data (including the mandatory
	 * null terminator) in bytes present in the fixed-length (52 bytes) Domain field
	 */
	if (cbDomain)
	{
		if ((cbDomain % 2) || cbDomain > 52)
		{
			WLog_ERR(TAG, "protocol error: invalid cbDomain value: %" PRIu32 "", cbDomain);
			goto fail;
		}

		ptrconv.bp = Stream_Pointer(s);

		if (ptrconv.wp[cbDomain / 2 - 1])
		{
			WLog_ERR(TAG, "protocol error: Domain must be null terminated");
			goto fail;
		}

		size_t len = 0;
		info->domain = ConvertWCharNToUtf8Alloc(ptrconv.wp, cbDomain / sizeof(WCHAR), &len);
		if (!info->domain || (len == 0))
		{
			WLog_ERR(TAG, "failed to convert the Domain string");
			goto fail;
		}
	}

	Stream_Seek(s, 52);                /* domain (52 bytes) */
	Stream_Read_UINT32(s, cbUserName); /* cbUserName (4 bytes) */

	/* cbUserName is the size of the Unicode character data (including the mandatory
	 * null terminator) in bytes present in the fixed-length (512 bytes) UserName field.
	 */
	if (cbUserName)
	{
		if ((cbUserName % 2) || cbUserName > 512)
		{
			WLog_ERR(TAG, "protocol error: invalid cbUserName value: %" PRIu32 "", cbUserName);
			goto fail;
		}

		ptrconv.bp = Stream_Pointer(s);

		if (ptrconv.wp[cbUserName / 2 - 1])
		{
			WLog_ERR(TAG, "protocol error: UserName must be null terminated");
			goto fail;
		}

		size_t len = 0;
		info->username = ConvertWCharNToUtf8Alloc(ptrconv.wp, cbUserName / sizeof(WCHAR), &len);
		if (!info->username || (len == 0))
		{
			WLog_ERR(TAG, "failed to convert the UserName string");
			goto fail;
		}
	}

	Stream_Seek(s, 512);                    /* userName (512 bytes) */
	Stream_Read_UINT32(s, info->sessionId); /* SessionId (4 bytes) */
	WLog_DBG(TAG, "LogonInfoV1: SessionId: 0x%08" PRIX32 " UserName: [%s] Domain: [%s]",
	         info->sessionId, info->username, info->domain);
	return TRUE;
fail:
	free(info->username);
	info->username = NULL;
	free(info->domain);
	info->domain = NULL;
	return FALSE;
}

static BOOL rdp_recv_logon_info_v2(rdpRdp* rdp, wStream* s, logon_info* info)
{
	UINT16 Version;
	UINT32 Size;
	UINT32 cbDomain;
	UINT32 cbUserName;

	WINPR_ASSERT(rdp);
	WINPR_ASSERT(s);
	WINPR_ASSERT(info);

	WINPR_UNUSED(rdp);
	ZeroMemory(info, sizeof(*info));

	if (!Stream_CheckAndLogRequiredLength(TAG, s, logonInfoV2TotalSize))
		return FALSE;

	Stream_Read_UINT16(s, Version); /* Version (2 bytes) */
	if (Version != SAVE_SESSION_PDU_VERSION_ONE)
	{
		WLog_WARN(TAG, "LogonInfoV2::Version expected %" PRIu16 " bytes, got %" PRIu16,
		          SAVE_SESSION_PDU_VERSION_ONE, Version);
		return FALSE;
	}

	Stream_Read_UINT32(s, Size); /* Size (4 bytes) */

	/* [MS-RDPBCGR] 2.2.10.1.1.2 Logon Info Version 2 (TS_LOGON_INFO_VERSION_2)
	 * should be logonInfoV2TotalSize
	 * but even MS server 2019 sends logonInfoV2Size
	 */
	if (Size != logonInfoV2TotalSize)
	{
		if (Size != logonInfoV2Size)
		{
			WLog_WARN(TAG, "LogonInfoV2::Size expected %" PRIu32 " bytes, got %" PRIu32,
			          logonInfoV2TotalSize, Size);
			return FALSE;
		}
	}

	Stream_Read_UINT32(s, info->sessionId);  /* SessionId (4 bytes) */
	Stream_Read_UINT32(s, cbDomain);         /* cbDomain (4 bytes) */
	Stream_Read_UINT32(s, cbUserName);       /* cbUserName (4 bytes) */
	Stream_Seek(s, logonInfoV2ReservedSize); /* pad (558 bytes) */

	/* cbDomain is the size in bytes of the Unicode character data in the Domain field.
	 * The size of the mandatory null terminator is include in this value.
	 * Note: Since MS-RDPBCGR 2.2.10.1.1.2 does not mention any size limits we assume
	 *       that the maximum value is 52 bytes, according to the fixed size of the
	 *       Domain field in the Logon Info Version 1 (TS_LOGON_INFO) structure.
	 */
	if (cbDomain)
	{
		WCHAR domain[26] = { 0 };
		if ((cbDomain % 2) || (cbDomain > 52))
		{
			WLog_ERR(TAG, "protocol error: invalid cbDomain value: %" PRIu32 "", cbDomain);
			goto fail;
		}

		if (!Stream_CheckAndLogRequiredLength(TAG, s, (size_t)cbDomain))
			goto fail;

		memcpy(domain, Stream_Pointer(s), cbDomain);
		Stream_Seek(s, cbDomain); /* domain */

		if (domain[cbDomain / sizeof(WCHAR) - 1])
		{
			WLog_ERR(TAG, "protocol error: Domain field must be null terminated");
			goto fail;
		}

		size_t len = 0;
		info->domain = ConvertWCharNToUtf8Alloc(domain, cbDomain / sizeof(WCHAR), &len);
		if (!info->domain || (len == 0))
		{
			WLog_ERR(TAG, "failed to convert the Domain string");
			goto fail;
		}
	}

	/* cbUserName is the size in bytes of the Unicode character data in the UserName field.
	 * The size of the mandatory null terminator is include in this value.
	 * Note: Since MS-RDPBCGR 2.2.10.1.1.2 does not mention any size limits we assume
	 *       that the maximum value is 512 bytes, according to the fixed size of the
	 *       Username field in the Logon Info Version 1 (TS_LOGON_INFO) structure.
	 */
	if (cbUserName)
	{
		WCHAR user[256] = { 0 };

		if ((cbUserName % 2) || cbUserName < 2 || cbUserName > 512)
		{
			WLog_ERR(TAG, "protocol error: invalid cbUserName value: %" PRIu32 "", cbUserName);
			goto fail;
		}

		if (!Stream_CheckAndLogRequiredLength(TAG, s, (size_t)cbUserName))
			goto fail;

		memcpy(user, Stream_Pointer(s), cbUserName);
		Stream_Seek(s, cbUserName); /* userName */

		if (user[cbUserName / sizeof(WCHAR) - 1])
		{
			WLog_ERR(TAG, "protocol error: UserName field must be null terminated");
			goto fail;
		}

		size_t len = 0;
		info->username = ConvertWCharNToUtf8Alloc(user, cbUserName / sizeof(WCHAR), &len);
		if (!info->username || (len == 0))
		{
			WLog_ERR(TAG, "failed to convert the UserName string");
			goto fail;
		}
	}

	WLog_DBG(TAG, "LogonInfoV2: SessionId: 0x%08" PRIX32 " UserName: [%s] Domain: [%s]",
	         info->sessionId, info->username, info->domain);
	return TRUE;
fail:
	free(info->username);
	info->username = NULL;
	free(info->domain);
	info->domain = NULL;
	return FALSE;
}

static BOOL rdp_recv_logon_plain_notify(rdpRdp* rdp, wStream* s)
{
	WINPR_UNUSED(rdp);
	if (!Stream_CheckAndLogRequiredLength(TAG, s, 576))
		return FALSE;

	Stream_Seek(s, 576); /* pad (576 bytes) */
	WLog_DBG(TAG, "LogonPlainNotify");
	return TRUE;
}

static BOOL rdp_recv_logon_error_info(rdpRdp* rdp, wStream* s, logon_info_ex* info)
{
	freerdp* instance;
	UINT32 errorNotificationType;
	UINT32 errorNotificationData;

	WINPR_ASSERT(rdp);
	WINPR_ASSERT(rdp->context);
	WINPR_ASSERT(s);
	WINPR_ASSERT(info);

	instance = rdp->context->instance;
	WINPR_ASSERT(instance);

	if (!Stream_CheckAndLogRequiredLength(TAG, s, 8))
		return FALSE;

	Stream_Read_UINT32(s, errorNotificationType); /* errorNotificationType (4 bytes) */
	Stream_Read_UINT32(s, errorNotificationData); /* errorNotificationData (4 bytes) */
	WLog_DBG(TAG, "LogonErrorInfo: Data: 0x%08" PRIX32 " Type: 0x%08" PRIX32 "",
	         errorNotificationData, errorNotificationType);
	IFCALL(instance->LogonErrorInfo, instance, errorNotificationData, errorNotificationType);
	info->ErrorNotificationType = errorNotificationType;
	info->ErrorNotificationData = errorNotificationData;
	return TRUE;
}

static BOOL rdp_recv_logon_info_extended(rdpRdp* rdp, wStream* s, logon_info_ex* info)
{
	UINT32 cbFieldData;
	UINT32 fieldsPresent;
	UINT16 Length;

	WINPR_ASSERT(rdp);
	WINPR_ASSERT(s);
	WINPR_ASSERT(info);

	if (!Stream_CheckAndLogRequiredLength(TAG, s, 6))
	{
		WLog_WARN(TAG, "received short logon info extended, need 6 bytes, got %" PRIuz,
		          Stream_GetRemainingLength(s));
		return FALSE;
	}

	Stream_Read_UINT16(s, Length);        /* Length (2 bytes) */
	Stream_Read_UINT32(s, fieldsPresent); /* fieldsPresent (4 bytes) */

	if ((Length < 6) || (!Stream_CheckAndLogRequiredLength(TAG, s, (Length - 6U))))
	{
		WLog_WARN(TAG,
		          "received short logon info extended, need %" PRIu16 " - 6 bytes, got %" PRIuz,
		          Length, Stream_GetRemainingLength(s));
		return FALSE;
	}

	WLog_DBG(TAG, "LogonInfoExtended: fieldsPresent: 0x%08" PRIX32 "", fieldsPresent);

	/* logonFields */

	if (fieldsPresent & LOGON_EX_AUTORECONNECTCOOKIE)
	{
		if (!Stream_CheckAndLogRequiredLength(TAG, s, 4))
			return FALSE;

		info->haveCookie = TRUE;
		Stream_Read_UINT32(s, cbFieldData); /* cbFieldData (4 bytes) */

		if (!Stream_CheckAndLogRequiredLength(TAG, s, cbFieldData))
			return FALSE;

		if (!rdp_read_server_auto_reconnect_cookie(rdp, s, info))
			return FALSE;
	}

	if (fieldsPresent & LOGON_EX_LOGONERRORS)
	{
		info->haveErrorInfo = TRUE;

		if (!Stream_CheckAndLogRequiredLength(TAG, s, 4))
			return FALSE;

		Stream_Read_UINT32(s, cbFieldData); /* cbFieldData (4 bytes) */

		if (!Stream_CheckAndLogRequiredLength(TAG, s, cbFieldData))
			return FALSE;

		if (!rdp_recv_logon_error_info(rdp, s, info))
			return FALSE;
	}

	if (!Stream_CheckAndLogRequiredLength(TAG, s, 570))
		return FALSE;

	Stream_Seek(s, 570); /* pad (570 bytes) */
	return TRUE;
}

BOOL rdp_recv_save_session_info(rdpRdp* rdp, wStream* s)
{
	UINT32 infoType;
	BOOL status;
	logon_info logonInfo = { 0 };
	logon_info_ex logonInfoEx = { 0 };
	rdpContext* context = rdp->context;
	rdpUpdate* update = rdp->context->update;

	if (!Stream_CheckAndLogRequiredLength(TAG, s, 4))
		return FALSE;

	Stream_Read_UINT32(s, infoType); /* infoType (4 bytes) */

	switch (infoType)
	{
		case INFO_TYPE_LOGON:
			status = rdp_recv_logon_info_v1(rdp, s, &logonInfo);

			if (status && update->SaveSessionInfo)
				status = update->SaveSessionInfo(context, infoType, &logonInfo);

			free(logonInfo.domain);
			free(logonInfo.username);
			break;

		case INFO_TYPE_LOGON_LONG:
			status = rdp_recv_logon_info_v2(rdp, s, &logonInfo);

			if (status && update->SaveSessionInfo)
				status = update->SaveSessionInfo(context, infoType, &logonInfo);

			free(logonInfo.domain);
			free(logonInfo.username);
			break;

		case INFO_TYPE_LOGON_PLAIN_NOTIFY:
			status = rdp_recv_logon_plain_notify(rdp, s);

			if (status && update->SaveSessionInfo)
				status = update->SaveSessionInfo(context, infoType, NULL);

			break;

		case INFO_TYPE_LOGON_EXTENDED_INF:
			status = rdp_recv_logon_info_extended(rdp, s, &logonInfoEx);

			if (status && update->SaveSessionInfo)
				status = update->SaveSessionInfo(context, infoType, &logonInfoEx);

			break;

		default:
			WLog_ERR(TAG, "Unhandled saveSessionInfo type 0x%" PRIx32 "", infoType);
			status = TRUE;
			break;
	}

	if (!status)
	{
		WLog_DBG(TAG, "SaveSessionInfo error: infoType: %s (%" PRIu32 ")",
		         infoType < 4 ? INFO_TYPE_LOGON_STRINGS[infoType % 4] : "Unknown", infoType);
	}

	return status;
}

static BOOL rdp_write_logon_info_v1(wStream* s, logon_info* info)
{
	const size_t charLen = 52 / sizeof(WCHAR);
	const size_t userCharLen = 512 / sizeof(WCHAR);

	size_t sz = 4 + 52 + 4 + 512 + 4;
	size_t len;

	if (!Stream_EnsureRemainingCapacity(s, sz))
		return FALSE;

	/* domain */
	len = strnlen(info->domain, charLen + 1);
	if (len > charLen)
		return FALSE;

	Stream_Write_UINT32(s, len * sizeof(WCHAR));
	if (Stream_Write_UTF16_String_From_UTF8(s, charLen, info->domain, len, TRUE) < 0)
		return FALSE;

	/* username */
	len = strnlen(info->username, userCharLen + 1);
	if (len > userCharLen)
		return FALSE;

	Stream_Write_UINT32(s, len * sizeof(WCHAR));
	if (Stream_Write_UTF16_String_From_UTF8(s, userCharLen, info->username, len, TRUE) < 0)
		return FALSE;

	/* sessionId */
	Stream_Write_UINT32(s, info->sessionId);
	return TRUE;
}

static BOOL rdp_write_logon_info_v2(wStream* s, logon_info* info)
{
	size_t domainLen, usernameLen;

	if (!Stream_EnsureRemainingCapacity(s, logonInfoV2TotalSize))
		return FALSE;

	Stream_Write_UINT16(s, SAVE_SESSION_PDU_VERSION_ONE);
	/* [MS-RDPBCGR] 2.2.10.1.1.2 Logon Info Version 2 (TS_LOGON_INFO_VERSION_2)
	 * should be logonInfoV2TotalSize
	 * but even MS server 2019 sends logonInfoV2Size
	 */
	Stream_Write_UINT32(s, logonInfoV2Size);
	Stream_Write_UINT32(s, info->sessionId);
	domainLen = strnlen(info->domain, UINT32_MAX);
	if (domainLen >= UINT32_MAX / sizeof(WCHAR))
		return FALSE;
	Stream_Write_UINT32(s, (UINT32)(domainLen + 1) * sizeof(WCHAR));
	usernameLen = strnlen(info->username, UINT32_MAX);
	if (usernameLen >= UINT32_MAX / sizeof(WCHAR))
		return FALSE;
	Stream_Write_UINT32(s, (UINT32)(usernameLen + 1) * sizeof(WCHAR));
	Stream_Seek(s, logonInfoV2ReservedSize);
	if (Stream_Write_UTF16_String_From_UTF8(s, domainLen + 1, info->domain, domainLen, TRUE) < 0)
		return FALSE;
	if (Stream_Write_UTF16_String_From_UTF8(s, usernameLen + 1, info->username, usernameLen, TRUE) <
	    0)
		return FALSE;
	return TRUE;
}

static BOOL rdp_write_logon_info_plain(wStream* s)
{
	if (!Stream_EnsureRemainingCapacity(s, 576))
		return FALSE;

	Stream_Seek(s, 576);
	return TRUE;
}

static BOOL rdp_write_logon_info_ex(wStream* s, logon_info_ex* info)
{
	UINT32 FieldsPresent = 0;
	UINT16 Size = 2 + 4 + 570;

	if (info->haveCookie)
	{
		FieldsPresent |= LOGON_EX_AUTORECONNECTCOOKIE;
		Size += 28;
	}

	if (info->haveErrorInfo)
	{
		FieldsPresent |= LOGON_EX_LOGONERRORS;
		Size += 8;
	}

	if (!Stream_EnsureRemainingCapacity(s, Size))
		return FALSE;

	Stream_Write_UINT16(s, Size);
	Stream_Write_UINT32(s, FieldsPresent);

	if (info->haveCookie)
	{
		Stream_Write_UINT32(s, 28);                       /* cbFieldData (4 bytes) */
		Stream_Write_UINT32(s, 28);                       /* cbLen (4 bytes) */
		Stream_Write_UINT32(s, AUTO_RECONNECT_VERSION_1); /* Version (4 bytes) */
		Stream_Write_UINT32(s, info->LogonId);            /* LogonId (4 bytes) */
		Stream_Write(s, info->ArcRandomBits, 16);         /* ArcRandomBits (16 bytes) */
	}

	if (info->haveErrorInfo)
	{
		Stream_Write_UINT32(s, 8);                           /* cbFieldData (4 bytes) */
		Stream_Write_UINT32(s, info->ErrorNotificationType); /* ErrorNotificationType (4 bytes) */
		Stream_Write_UINT32(s, info->ErrorNotificationData); /* ErrorNotificationData (4 bytes) */
	}

	Stream_Seek(s, 570);
	return TRUE;
}

BOOL rdp_send_save_session_info(rdpContext* context, UINT32 type, void* data)
{
	wStream* s;
	BOOL status;
	rdpRdp* rdp = context->rdp;
	s = rdp_data_pdu_init(rdp);

	if (!s)
		return FALSE;

	Stream_Write_UINT32(s, type);

	switch (type)
	{
		case INFO_TYPE_LOGON:
			status = rdp_write_logon_info_v1(s, (logon_info*)data);
			break;

		case INFO_TYPE_LOGON_LONG:
			status = rdp_write_logon_info_v2(s, (logon_info*)data);
			break;

		case INFO_TYPE_LOGON_PLAIN_NOTIFY:
			status = rdp_write_logon_info_plain(s);
			break;

		case INFO_TYPE_LOGON_EXTENDED_INF:
			status = rdp_write_logon_info_ex(s, (logon_info_ex*)data);
			break;

		default:
			WLog_ERR(TAG, "saveSessionInfo type 0x%" PRIx32 " not handled", type);
			status = FALSE;
			break;
	}

	if (status)
		status = rdp_send_data_pdu(rdp, s, DATA_PDU_TYPE_SAVE_SESSION_INFO, rdp->mcs->userId);
	else
		Stream_Release(s);

	return status;
}

BOOL rdp_send_server_status_info(rdpContext* context, UINT32 status)
{
	wStream* s;
	rdpRdp* rdp = context->rdp;
	s = rdp_data_pdu_init(rdp);

	if (!s)
		return FALSE;

	Stream_Write_UINT32(s, status);
	return rdp_send_data_pdu(rdp, s, DATA_PDU_TYPE_STATUS_INFO, rdp->mcs->userId);
}