584 lines
16 KiB
C
584 lines
16 KiB
C
/**
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* FreeRDP: A Remote Desktop Protocol Implementation
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* RAIL common functions
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*
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* Copyright 2011 Marc-Andre Moreau <marcandre.moreau@gmail.com>
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* Copyright 2011 Roman Barabanov <romanbarabanov@gmail.com>
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* Copyright 2011 Vic Lee
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* Copyright 2015 Thincast Technologies GmbH
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* Copyright 2015 DI (FH) Martin Haimberger <martin.haimberger@thincast.com>
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "rail_common.h"
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#include <winpr/crt.h>
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#include <freerdp/channels/log.h>
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#define TAG CHANNELS_TAG("rail.common")
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static const char* const RAIL_ORDER_TYPE_STRINGS[] = { "",
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"Execute",
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"Activate",
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"System Parameters Update",
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"System Command",
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"Handshake",
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"Notify Event",
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"",
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"Window Move",
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"Local Move/Size",
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"Min Max Info",
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"Client Status",
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"System Menu",
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"Language Bar Info",
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"Get Application ID Request",
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"Get Application ID Response",
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"Execute Result",
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"",
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"",
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"",
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"",
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"",
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"" };
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const char* rail_get_order_type_string(UINT16 orderType)
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{
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UINT32 index = ((orderType & 0xF0) >> 3) + (orderType & 0x0F);
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if (index >= ARRAYSIZE(RAIL_ORDER_TYPE_STRINGS))
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return "UNKNOWN";
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return RAIL_ORDER_TYPE_STRINGS[index];
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}
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/**
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* Function description
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*
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* @return 0 on success, otherwise a Win32 error code
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*/
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UINT rail_read_pdu_header(wStream* s, UINT16* orderType, UINT16* orderLength)
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{
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if (!s || !orderType || !orderLength)
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return ERROR_INVALID_PARAMETER;
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if (Stream_GetRemainingLength(s) < 4)
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return ERROR_INVALID_DATA;
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Stream_Read_UINT16(s, *orderType); /* orderType (2 bytes) */
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Stream_Read_UINT16(s, *orderLength); /* orderLength (2 bytes) */
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return CHANNEL_RC_OK;
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}
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void rail_write_pdu_header(wStream* s, UINT16 orderType, UINT16 orderLength)
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{
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Stream_Write_UINT16(s, orderType); /* orderType (2 bytes) */
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Stream_Write_UINT16(s, orderLength); /* orderLength (2 bytes) */
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}
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wStream* rail_pdu_init(size_t length)
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{
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wStream* s;
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s = Stream_New(NULL, length + RAIL_PDU_HEADER_LENGTH);
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if (!s)
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return NULL;
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Stream_Seek(s, RAIL_PDU_HEADER_LENGTH);
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return s;
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}
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/**
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* Function description
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*
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* @return 0 on success, otherwise a Win32 error code
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*/
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UINT rail_read_handshake_order(wStream* s, RAIL_HANDSHAKE_ORDER* handshake)
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{
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if (Stream_GetRemainingLength(s) < 4)
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return ERROR_INVALID_DATA;
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Stream_Read_UINT32(s, handshake->buildNumber); /* buildNumber (4 bytes) */
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return CHANNEL_RC_OK;
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}
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void rail_write_handshake_order(wStream* s, const RAIL_HANDSHAKE_ORDER* handshake)
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{
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Stream_Write_UINT32(s, handshake->buildNumber); /* buildNumber (4 bytes) */
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}
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/**
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* Function description
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*
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* @return 0 on success, otherwise a Win32 error code
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*/
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UINT rail_read_handshake_ex_order(wStream* s, RAIL_HANDSHAKE_EX_ORDER* handshakeEx)
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{
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if (Stream_GetRemainingLength(s) < 8)
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return ERROR_INVALID_DATA;
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Stream_Read_UINT32(s, handshakeEx->buildNumber); /* buildNumber (4 bytes) */
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Stream_Read_UINT32(s, handshakeEx->railHandshakeFlags); /* railHandshakeFlags (4 bytes) */
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return CHANNEL_RC_OK;
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}
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void rail_write_handshake_ex_order(wStream* s, const RAIL_HANDSHAKE_EX_ORDER* handshakeEx)
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{
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Stream_Write_UINT32(s, handshakeEx->buildNumber); /* buildNumber (4 bytes) */
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Stream_Write_UINT32(s, handshakeEx->railHandshakeFlags); /* railHandshakeFlags (4 bytes) */
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}
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/**
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* Function description
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*
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* @return 0 on success, otherwise a Win32 error code
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*/
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UINT rail_write_unicode_string(wStream* s, const RAIL_UNICODE_STRING* unicode_string)
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{
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if (!s || !unicode_string)
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return ERROR_INVALID_PARAMETER;
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if (!Stream_EnsureRemainingCapacity(s, 2 + unicode_string->length))
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{
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WLog_ERR(TAG, "Stream_EnsureRemainingCapacity failed!");
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return CHANNEL_RC_NO_MEMORY;
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}
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Stream_Write_UINT16(s, unicode_string->length); /* cbString (2 bytes) */
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Stream_Write(s, unicode_string->string, unicode_string->length); /* string */
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return CHANNEL_RC_OK;
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}
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/**
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* Function description
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*
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* @return 0 on success, otherwise a Win32 error code
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*/
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UINT rail_write_unicode_string_value(wStream* s, const RAIL_UNICODE_STRING* unicode_string)
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{
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size_t length;
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if (!s || !unicode_string)
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return ERROR_INVALID_PARAMETER;
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length = unicode_string->length;
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if (length > 0)
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{
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if (!Stream_EnsureRemainingCapacity(s, length))
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{
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WLog_ERR(TAG, "Stream_EnsureRemainingCapacity failed!");
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return CHANNEL_RC_NO_MEMORY;
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}
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Stream_Write(s, unicode_string->string, length); /* string */
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}
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return CHANNEL_RC_OK;
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}
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/**
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* Function description
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*
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* @return 0 on success, otherwise a Win32 error code
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*/
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static UINT rail_read_high_contrast(wStream* s, RAIL_HIGH_CONTRAST* highContrast)
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{
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if (!s || !highContrast)
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return ERROR_INVALID_PARAMETER;
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if (Stream_GetRemainingLength(s) < 8)
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return ERROR_INVALID_DATA;
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Stream_Read_UINT32(s, highContrast->flags); /* flags (4 bytes) */
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Stream_Read_UINT32(s, highContrast->colorSchemeLength); /* colorSchemeLength (4 bytes) */
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if (!rail_read_unicode_string(s, &highContrast->colorScheme)) /* colorScheme */
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return ERROR_INTERNAL_ERROR;
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return CHANNEL_RC_OK;
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}
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/**
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* Function description
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*
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* @return 0 on success, otherwise a Win32 error code
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*/
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static UINT rail_write_high_contrast(wStream* s, const RAIL_HIGH_CONTRAST* highContrast)
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{
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UINT32 colorSchemeLength;
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if (!s || !highContrast)
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return ERROR_INVALID_PARAMETER;
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if (!Stream_EnsureRemainingCapacity(s, 8))
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return CHANNEL_RC_NO_MEMORY;
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colorSchemeLength = highContrast->colorScheme.length + 2;
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Stream_Write_UINT32(s, highContrast->flags); /* flags (4 bytes) */
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Stream_Write_UINT32(s, colorSchemeLength); /* colorSchemeLength (4 bytes) */
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return rail_write_unicode_string(s, &highContrast->colorScheme); /* colorScheme */
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}
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/**
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* Function description
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*
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* @return 0 on success, otherwise a Win32 error code
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*/
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static UINT rail_read_filterkeys(wStream* s, TS_FILTERKEYS* filterKeys)
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{
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if (!s || !filterKeys)
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return ERROR_INVALID_PARAMETER;
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if (Stream_GetRemainingLength(s) < 20)
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return ERROR_INVALID_DATA;
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Stream_Read_UINT32(s, filterKeys->Flags);
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Stream_Read_UINT32(s, filterKeys->WaitTime);
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Stream_Read_UINT32(s, filterKeys->DelayTime);
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Stream_Read_UINT32(s, filterKeys->RepeatTime);
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Stream_Read_UINT32(s, filterKeys->BounceTime);
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return CHANNEL_RC_OK;
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}
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/**
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* Function description
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*
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* @return 0 on success, otherwise a Win32 error code
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*/
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static UINT rail_write_filterkeys(wStream* s, const TS_FILTERKEYS* filterKeys)
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{
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if (!s || !filterKeys)
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return ERROR_INVALID_PARAMETER;
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if (!Stream_EnsureRemainingCapacity(s, 20))
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return CHANNEL_RC_NO_MEMORY;
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Stream_Write_UINT32(s, filterKeys->Flags);
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Stream_Write_UINT32(s, filterKeys->WaitTime);
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Stream_Write_UINT32(s, filterKeys->DelayTime);
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Stream_Write_UINT32(s, filterKeys->RepeatTime);
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Stream_Write_UINT32(s, filterKeys->BounceTime);
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return CHANNEL_RC_OK;
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}
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/**
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* Function description
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*
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* @return 0 on success, otherwise a Win32 error code
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*/
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UINT rail_read_sysparam_order(wStream* s, RAIL_SYSPARAM_ORDER* sysparam, BOOL extendedSpiSupported)
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{
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BYTE body;
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UINT error = CHANNEL_RC_OK;
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if (!s || !sysparam)
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return ERROR_INVALID_PARAMETER;
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if (Stream_GetRemainingLength(s) < 5)
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{
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WLog_ERR(TAG, "Stream_GetRemainingLength failed!");
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return ERROR_INVALID_DATA;
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}
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Stream_Read_UINT32(s, sysparam->param); /* systemParam (4 bytes) */
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sysparam->params = 0; /* bitflags of received params */
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switch (sysparam->param)
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{
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/* Client sysparams */
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case SPI_SET_DRAG_FULL_WINDOWS:
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sysparam->params |= SPI_MASK_SET_DRAG_FULL_WINDOWS;
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Stream_Read_UINT8(s, body); /* body (1 byte) */
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sysparam->dragFullWindows = body != 0;
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break;
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case SPI_SET_KEYBOARD_CUES:
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sysparam->params |= SPI_MASK_SET_KEYBOARD_CUES;
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Stream_Read_UINT8(s, body); /* body (1 byte) */
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sysparam->keyboardCues = body != 0;
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break;
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case SPI_SET_KEYBOARD_PREF:
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sysparam->params |= SPI_MASK_SET_KEYBOARD_PREF;
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Stream_Read_UINT8(s, body); /* body (1 byte) */
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sysparam->keyboardPref = body != 0;
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break;
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case SPI_SET_MOUSE_BUTTON_SWAP:
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sysparam->params |= SPI_MASK_SET_MOUSE_BUTTON_SWAP;
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Stream_Read_UINT8(s, body); /* body (1 byte) */
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sysparam->mouseButtonSwap = body != 0;
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break;
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case SPI_SET_WORK_AREA:
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sysparam->params |= SPI_MASK_SET_WORK_AREA;
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if (Stream_GetRemainingLength(s) < 8)
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{
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WLog_ERR(TAG, "Stream_GetRemainingLength failed!");
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return ERROR_INVALID_DATA;
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}
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Stream_Read_UINT16(s, sysparam->workArea.left); /* left (2 bytes) */
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Stream_Read_UINT16(s, sysparam->workArea.top); /* top (2 bytes) */
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Stream_Read_UINT16(s, sysparam->workArea.right); /* right (2 bytes) */
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Stream_Read_UINT16(s, sysparam->workArea.bottom); /* bottom (2 bytes) */
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break;
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case SPI_DISPLAY_CHANGE:
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sysparam->params |= SPI_MASK_DISPLAY_CHANGE;
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if (Stream_GetRemainingLength(s) < 8)
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{
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WLog_ERR(TAG, "Stream_GetRemainingLength failed!");
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return ERROR_INVALID_DATA;
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}
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Stream_Read_UINT16(s, sysparam->displayChange.left); /* left (2 bytes) */
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Stream_Read_UINT16(s, sysparam->displayChange.top); /* top (2 bytes) */
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Stream_Read_UINT16(s, sysparam->displayChange.right); /* right (2 bytes) */
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Stream_Read_UINT16(s, sysparam->displayChange.bottom); /* bottom (2 bytes) */
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break;
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case SPI_TASKBAR_POS:
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sysparam->params |= SPI_MASK_TASKBAR_POS;
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if (Stream_GetRemainingLength(s) < 8)
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{
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WLog_ERR(TAG, "Stream_GetRemainingLength failed!");
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return ERROR_INVALID_DATA;
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}
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Stream_Read_UINT16(s, sysparam->taskbarPos.left); /* left (2 bytes) */
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Stream_Read_UINT16(s, sysparam->taskbarPos.top); /* top (2 bytes) */
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Stream_Read_UINT16(s, sysparam->taskbarPos.right); /* right (2 bytes) */
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Stream_Read_UINT16(s, sysparam->taskbarPos.bottom); /* bottom (2 bytes) */
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break;
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case SPI_SET_HIGH_CONTRAST:
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sysparam->params |= SPI_MASK_SET_HIGH_CONTRAST;
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if (Stream_GetRemainingLength(s) < 8)
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{
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WLog_ERR(TAG, "Stream_GetRemainingLength failed!");
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return ERROR_INVALID_DATA;
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}
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error = rail_read_high_contrast(s, &sysparam->highContrast);
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break;
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case SPI_SETCARETWIDTH:
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sysparam->params |= SPI_MASK_SET_CARET_WIDTH;
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if (!extendedSpiSupported)
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return ERROR_INVALID_DATA;
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if (Stream_GetRemainingLength(s) < 4)
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{
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WLog_ERR(TAG, "Stream_GetRemainingLength failed!");
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return ERROR_INVALID_DATA;
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}
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Stream_Read_UINT32(s, sysparam->caretWidth);
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if (sysparam->caretWidth < 0x0001)
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return ERROR_INVALID_DATA;
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break;
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case SPI_SETSTICKYKEYS:
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sysparam->params |= SPI_MASK_SET_STICKY_KEYS;
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if (!extendedSpiSupported)
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return ERROR_INVALID_DATA;
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if (Stream_GetRemainingLength(s) < 4)
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{
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WLog_ERR(TAG, "Stream_GetRemainingLength failed!");
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return ERROR_INVALID_DATA;
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}
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Stream_Read_UINT32(s, sysparam->stickyKeys);
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break;
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case SPI_SETTOGGLEKEYS:
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sysparam->params |= SPI_MASK_SET_TOGGLE_KEYS;
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if (!extendedSpiSupported)
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return ERROR_INVALID_DATA;
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if (Stream_GetRemainingLength(s) < 4)
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{
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WLog_ERR(TAG, "Stream_GetRemainingLength failed!");
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return ERROR_INVALID_DATA;
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}
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Stream_Read_UINT32(s, sysparam->toggleKeys);
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break;
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case SPI_SETFILTERKEYS:
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sysparam->params |= SPI_MASK_SET_FILTER_KEYS;
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if (!extendedSpiSupported)
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return ERROR_INVALID_DATA;
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if (Stream_GetRemainingLength(s) < 20)
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{
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WLog_ERR(TAG, "Stream_GetRemainingLength failed!");
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return ERROR_INVALID_DATA;
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}
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error = rail_read_filterkeys(s, &sysparam->filterKeys);
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break;
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/* Server sysparams */
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case SPI_SETSCREENSAVEACTIVE:
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sysparam->params |= SPI_MASK_SET_SCREEN_SAVE_ACTIVE;
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Stream_Read_UINT8(s, body); /* body (1 byte) */
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sysparam->setScreenSaveActive = body != 0;
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break;
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case SPI_SETSCREENSAVESECURE:
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sysparam->params |= SPI_MASK_SET_SET_SCREEN_SAVE_SECURE;
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Stream_Read_UINT8(s, body); /* body (1 byte) */
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sysparam->setScreenSaveSecure = body != 0;
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break;
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default:
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break;
|
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}
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|
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return CHANNEL_RC_OK;
|
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}
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|
|
/**
|
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* Function description
|
|
*
|
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* @return 0 on success, otherwise a Win32 err2or code
|
|
*/
|
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UINT rail_write_sysparam_order(wStream* s, const RAIL_SYSPARAM_ORDER* sysparam,
|
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BOOL extendedSpiSupported)
|
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{
|
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BYTE body;
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UINT error = CHANNEL_RC_OK;
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if (!s || !sysparam)
|
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return ERROR_INVALID_PARAMETER;
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|
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if (!Stream_EnsureRemainingCapacity(s, 12))
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return CHANNEL_RC_NO_MEMORY;
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Stream_Write_UINT32(s, sysparam->param); /* systemParam (4 bytes) */
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switch (sysparam->param)
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{
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/* Client sysparams */
|
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case SPI_SET_DRAG_FULL_WINDOWS:
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body = sysparam->dragFullWindows ? 1 : 0;
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Stream_Write_UINT8(s, body);
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break;
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case SPI_SET_KEYBOARD_CUES:
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body = sysparam->keyboardCues ? 1 : 0;
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Stream_Write_UINT8(s, body);
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break;
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case SPI_SET_KEYBOARD_PREF:
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body = sysparam->keyboardPref ? 1 : 0;
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Stream_Write_UINT8(s, body);
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break;
|
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case SPI_SET_MOUSE_BUTTON_SWAP:
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body = sysparam->mouseButtonSwap ? 1 : 0;
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Stream_Write_UINT8(s, body);
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break;
|
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|
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case SPI_SET_WORK_AREA:
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Stream_Write_UINT16(s, sysparam->workArea.left); /* left (2 bytes) */
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Stream_Write_UINT16(s, sysparam->workArea.top); /* top (2 bytes) */
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Stream_Write_UINT16(s, sysparam->workArea.right); /* right (2 bytes) */
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Stream_Write_UINT16(s, sysparam->workArea.bottom); /* bottom (2 bytes) */
|
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break;
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case SPI_DISPLAY_CHANGE:
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Stream_Write_UINT16(s, sysparam->displayChange.left); /* left (2 bytes) */
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Stream_Write_UINT16(s, sysparam->displayChange.top); /* top (2 bytes) */
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Stream_Write_UINT16(s, sysparam->displayChange.right); /* right (2 bytes) */
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Stream_Write_UINT16(s, sysparam->displayChange.bottom); /* bottom (2 bytes) */
|
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break;
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|
|
|
case SPI_TASKBAR_POS:
|
|
Stream_Write_UINT16(s, sysparam->taskbarPos.left); /* left (2 bytes) */
|
|
Stream_Write_UINT16(s, sysparam->taskbarPos.top); /* top (2 bytes) */
|
|
Stream_Write_UINT16(s, sysparam->taskbarPos.right); /* right (2 bytes) */
|
|
Stream_Write_UINT16(s, sysparam->taskbarPos.bottom); /* bottom (2 bytes) */
|
|
break;
|
|
|
|
case SPI_SET_HIGH_CONTRAST:
|
|
error = rail_write_high_contrast(s, &sysparam->highContrast);
|
|
break;
|
|
|
|
case SPI_SETCARETWIDTH:
|
|
if (!extendedSpiSupported)
|
|
return ERROR_INVALID_DATA;
|
|
|
|
if (sysparam->caretWidth < 0x0001)
|
|
return ERROR_INVALID_DATA;
|
|
|
|
Stream_Write_UINT32(s, sysparam->caretWidth);
|
|
break;
|
|
|
|
case SPI_SETSTICKYKEYS:
|
|
if (!extendedSpiSupported)
|
|
return ERROR_INVALID_DATA;
|
|
|
|
Stream_Write_UINT32(s, sysparam->stickyKeys);
|
|
break;
|
|
|
|
case SPI_SETTOGGLEKEYS:
|
|
if (!extendedSpiSupported)
|
|
return ERROR_INVALID_DATA;
|
|
|
|
Stream_Write_UINT32(s, sysparam->toggleKeys);
|
|
break;
|
|
|
|
case SPI_SETFILTERKEYS:
|
|
if (!extendedSpiSupported)
|
|
return ERROR_INVALID_DATA;
|
|
|
|
error = rail_write_filterkeys(s, &sysparam->filterKeys);
|
|
break;
|
|
|
|
/* Server sysparams */
|
|
case SPI_SETSCREENSAVEACTIVE:
|
|
body = sysparam->setScreenSaveActive ? 1 : 0;
|
|
Stream_Write_UINT8(s, body);
|
|
break;
|
|
|
|
case SPI_SETSCREENSAVESECURE:
|
|
body = sysparam->setScreenSaveSecure ? 1 : 0;
|
|
Stream_Write_UINT8(s, body);
|
|
break;
|
|
|
|
default:
|
|
return ERROR_INVALID_PARAMETER;
|
|
}
|
|
|
|
return error;
|
|
}
|
|
|
|
BOOL rail_is_extended_spi_supported(UINT32 channelFlags)
|
|
{
|
|
return channelFlags & TS_RAIL_ORDER_HANDSHAKE_EX_FLAGS_EXTENDED_SPI_SUPPORTED;
|
|
}
|