2013-05-09 07:18:42 +04:00
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/**
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* FreeRDP: A Remote Desktop Protocol Implementation
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* Input Virtual Channel Extension
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*
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* Copyright 2013 Marc-Andre Moreau <marcandre.moreau@gmail.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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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <winpr/crt.h>
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#include <winpr/stream.h>
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#include "rdpei_common.h"
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BOOL rdpei_read_2byte_unsigned(wStream* s, UINT32* value)
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{
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BYTE byte;
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if (Stream_GetRemainingLength(s) < 1)
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return FALSE;
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2013-05-09 08:21:33 +04:00
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2013-05-09 07:18:42 +04:00
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Stream_Read_UINT8(s, byte);
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if (byte & 0x80)
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{
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if (Stream_GetRemainingLength(s) < 1)
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return FALSE;
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*value = (byte & 0x7F) << 8;
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Stream_Read_UINT8(s, byte);
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*value |= byte;
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}
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else
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{
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*value = (byte & 0x7F);
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}
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return TRUE;
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}
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BOOL rdpei_write_2byte_unsigned(wStream* s, UINT32 value)
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{
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BYTE byte;
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if (value > 0x7FFF)
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return FALSE;
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if (value >= 0x7F)
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{
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byte = ((value & 0x7F00) >> 8);
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Stream_Write_UINT8(s, byte | 0x80);
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byte = (value & 0xFF);
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Stream_Write_UINT8(s, byte);
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}
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else
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{
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byte = (value & 0x7F);
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Stream_Write_UINT8(s, byte);
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}
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return TRUE;
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}
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BOOL rdpei_read_2byte_signed(wStream* s, INT32* value)
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{
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BYTE byte;
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BOOL negative;
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if (Stream_GetRemainingLength(s) < 1)
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return FALSE;
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Stream_Read_UINT8(s, byte);
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negative = (byte & 0x40) ? TRUE : FALSE;
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*value = (byte & 0x3F);
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if (byte & 0x80)
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{
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if (Stream_GetRemainingLength(s) < 1)
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return FALSE;
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Stream_Read_UINT8(s, byte);
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*value = (*value << 8) | byte;
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}
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if (negative)
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*value *= -1;
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return TRUE;
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}
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BOOL rdpei_write_2byte_signed(wStream* s, INT32 value)
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{
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BYTE byte;
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BOOL negative = FALSE;
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if (value < 0)
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{
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negative = TRUE;
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value *= -1;
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}
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if (value > 0x3FFF)
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return FALSE;
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if (value >= 0x3F)
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{
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byte = ((value & 0x3F00) >> 8);
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if (negative)
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byte |= 0x40;
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Stream_Write_UINT8(s, byte | 0x80);
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byte = (value & 0xFF);
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Stream_Write_UINT8(s, byte);
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}
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else
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{
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byte = (value & 0x3F);
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if (negative)
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byte |= 0x40;
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Stream_Write_UINT8(s, byte);
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}
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return TRUE;
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}
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BOOL rdpei_read_4byte_unsigned(wStream* s, UINT32* value)
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{
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BYTE byte;
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BYTE count;
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if (Stream_GetRemainingLength(s) < 1)
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return FALSE;
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Stream_Read_UINT8(s, byte);
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count = (byte & 0xC0) >> 6;
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if (Stream_GetRemainingLength(s) < count)
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return FALSE;
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switch (count)
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{
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case 0:
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*value = (byte & 0x3F);
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break;
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case 1:
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*value = (byte & 0x3F) << 8;
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Stream_Read_UINT8(s, byte);
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*value |= byte;
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break;
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case 2:
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*value = (byte & 0x3F) << 16;
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Stream_Read_UINT8(s, byte);
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*value |= (byte << 8);
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Stream_Read_UINT8(s, byte);
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*value |= byte;
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break;
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case 3:
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*value = (byte & 0x3F) << 24;
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Stream_Read_UINT8(s, byte);
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*value |= (byte << 16);
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Stream_Read_UINT8(s, byte);
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*value |= (byte << 8);
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Stream_Read_UINT8(s, byte);
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*value |= byte;
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break;
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default:
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break;
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}
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return TRUE;
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}
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BOOL rdpei_write_4byte_unsigned(wStream* s, UINT32 value)
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{
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BYTE byte;
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if (value <= 0x3F)
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{
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Stream_Write_UINT8(s, value);
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}
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else if (value <= 0x3FFF)
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{
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byte = (value >> 8) & 0x3F;
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Stream_Write_UINT8(s, byte | 0x40);
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byte = (value & 0xFF);
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Stream_Write_UINT8(s, byte);
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}
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else if (value <= 0x3FFFFF)
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{
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byte = (value >> 16) & 0x3F;
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Stream_Write_UINT8(s, byte | 0x80);
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byte = (value >> 8) & 0xFF;
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Stream_Write_UINT8(s, byte);
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byte = (value & 0xFF);
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Stream_Write_UINT8(s, byte);
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}
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else if (value <= 0x3FFFFF)
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{
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byte = (value >> 24) & 0x3F;
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Stream_Write_UINT8(s, byte | 0xC0);
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byte = (value >> 16) & 0xFF;
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Stream_Write_UINT8(s, byte);
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byte = (value >> 8) & 0xFF;
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Stream_Write_UINT8(s, byte);
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byte = (value & 0xFF);
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Stream_Write_UINT8(s, byte);
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}
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else
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{
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return FALSE;
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}
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return TRUE;
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}
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BOOL rdpei_read_4byte_signed(wStream* s, INT32* value)
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{
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BYTE byte;
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BYTE count;
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BOOL negative;
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if (Stream_GetRemainingLength(s) < 1)
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return FALSE;
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Stream_Read_UINT8(s, byte);
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count = (byte & 0xC0) >> 6;
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negative = (byte & 0x20);
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if (Stream_GetRemainingLength(s) < count)
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return FALSE;
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switch (count)
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{
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case 0:
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*value = (byte & 0x1F);
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break;
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case 1:
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*value = (byte & 0x1F) << 8;
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Stream_Read_UINT8(s, byte);
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*value |= byte;
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break;
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case 2:
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*value = (byte & 0x1F) << 16;
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Stream_Read_UINT8(s, byte);
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*value |= (byte << 8);
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Stream_Read_UINT8(s, byte);
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*value |= byte;
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break;
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case 3:
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*value = (byte & 0x1F) << 24;
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Stream_Read_UINT8(s, byte);
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*value |= (byte << 16);
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Stream_Read_UINT8(s, byte);
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*value |= (byte << 8);
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Stream_Read_UINT8(s, byte);
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*value |= byte;
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break;
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default:
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break;
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}
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if (negative)
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*value *= -1;
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return TRUE;
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}
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BOOL rdpei_write_4byte_signed(wStream* s, INT32 value)
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{
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BYTE byte;
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BOOL negative = FALSE;
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if (value < 0)
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{
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negative = TRUE;
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value *= -1;
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}
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if (value <= 0x1F)
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{
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byte = value & 0x1F;
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if (negative)
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byte |= 0x20;
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Stream_Write_UINT8(s, value);
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}
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else if (value <= 0x1FFF)
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{
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byte = (value >> 8) & 0x1F;
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if (negative)
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byte |= 0x20;
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Stream_Write_UINT8(s, byte | 0x40);
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byte = (value & 0xFF);
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Stream_Write_UINT8(s, byte);
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}
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else if (value <= 0x1FFFFF)
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{
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byte = (value >> 16) & 0x1F;
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if (negative)
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byte |= 0x20;
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Stream_Write_UINT8(s, byte | 0x80);
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byte = (value >> 8) & 0xFF;
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Stream_Write_UINT8(s, byte);
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byte = (value & 0xFF);
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Stream_Write_UINT8(s, byte);
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}
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else if (value <= 0x1FFFFF)
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{
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byte = (value >> 24) & 0x1F;
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if (negative)
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byte |= 0x20;
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Stream_Write_UINT8(s, byte | 0xC0);
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byte = (value >> 16) & 0xFF;
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Stream_Write_UINT8(s, byte);
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byte = (value >> 8) & 0xFF;
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Stream_Write_UINT8(s, byte);
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byte = (value & 0xFF);
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Stream_Write_UINT8(s, byte);
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}
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else
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{
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return FALSE;
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}
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return TRUE;
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}
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BOOL rdpei_read_8byte_unsigned(wStream* s, UINT64* value)
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{
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BYTE byte;
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BYTE count;
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if (Stream_GetRemainingLength(s) < 1)
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return FALSE;
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Stream_Read_UINT8(s, byte);
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count = (byte & 0xE0) >> 5;
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if (Stream_GetRemainingLength(s) < count)
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return FALSE;
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switch (count)
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{
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case 0:
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*value = (byte & 0x1F);
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break;
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case 1:
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*value = (byte & 0x1F) << 8;
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Stream_Read_UINT8(s, byte);
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*value |= byte;
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break;
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case 2:
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*value = (byte & 0x1F) << 16;
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Stream_Read_UINT8(s, byte);
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*value |= (byte << 8);
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Stream_Read_UINT8(s, byte);
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*value |= byte;
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break;
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case 3:
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*value = (byte & 0x1F) << 24;
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Stream_Read_UINT8(s, byte);
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*value |= (byte << 16);
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Stream_Read_UINT8(s, byte);
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*value |= (byte << 8);
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Stream_Read_UINT8(s, byte);
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*value |= byte;
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break;
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case 4:
|
2013-05-15 06:01:36 +04:00
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*value = ((UINT64) (byte & 0x1F)) << 32;
|
2013-05-09 07:18:42 +04:00
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Stream_Read_UINT8(s, byte);
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*value |= (byte << 24);
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Stream_Read_UINT8(s, byte);
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*value |= (byte << 16);
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Stream_Read_UINT8(s, byte);
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*value |= (byte << 8);
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Stream_Read_UINT8(s, byte);
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*value |= byte;
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break;
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|
|
case 5:
|
2013-05-15 06:01:36 +04:00
|
|
|
*value = ((UINT64) (byte & 0x1F)) << 40;
|
2013-05-09 07:18:42 +04:00
|
|
|
Stream_Read_UINT8(s, byte);
|
2013-05-15 06:01:36 +04:00
|
|
|
*value |= (((UINT64) byte) << 32);
|
2013-05-09 07:18:42 +04:00
|
|
|
Stream_Read_UINT8(s, byte);
|
|
|
|
*value |= (byte << 24);
|
|
|
|
Stream_Read_UINT8(s, byte);
|
|
|
|
*value |= (byte << 16);
|
|
|
|
Stream_Read_UINT8(s, byte);
|
|
|
|
*value |= (byte << 8);
|
|
|
|
Stream_Read_UINT8(s, byte);
|
|
|
|
*value |= byte;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case 6:
|
2013-05-15 06:01:36 +04:00
|
|
|
*value = ((UINT64) (byte & 0x1F)) << 48;
|
2013-05-09 07:18:42 +04:00
|
|
|
Stream_Read_UINT8(s, byte);
|
2013-05-15 06:01:36 +04:00
|
|
|
*value |= (((UINT64) byte) << 40);
|
2013-05-09 07:18:42 +04:00
|
|
|
Stream_Read_UINT8(s, byte);
|
2013-05-15 06:01:36 +04:00
|
|
|
*value |= (((UINT64) byte) << 32);
|
2013-05-09 07:18:42 +04:00
|
|
|
Stream_Read_UINT8(s, byte);
|
|
|
|
*value |= (byte << 24);
|
|
|
|
Stream_Read_UINT8(s, byte);
|
|
|
|
*value |= (byte << 16);
|
|
|
|
Stream_Read_UINT8(s, byte);
|
|
|
|
*value |= (byte << 8);
|
|
|
|
Stream_Read_UINT8(s, byte);
|
|
|
|
*value |= byte;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case 7:
|
2013-05-15 06:01:36 +04:00
|
|
|
*value = ((UINT64) (byte & 0x1F)) << 56;
|
2013-05-09 07:18:42 +04:00
|
|
|
Stream_Read_UINT8(s, byte);
|
2013-05-15 06:01:36 +04:00
|
|
|
*value |= (((UINT64) byte) << 48);
|
2013-05-09 07:18:42 +04:00
|
|
|
Stream_Read_UINT8(s, byte);
|
2013-05-15 06:01:36 +04:00
|
|
|
*value |= (((UINT64) byte) << 40);
|
2013-05-09 07:18:42 +04:00
|
|
|
Stream_Read_UINT8(s, byte);
|
2013-05-15 06:01:36 +04:00
|
|
|
*value |= (((UINT64) byte) << 32);
|
2013-05-09 07:18:42 +04:00
|
|
|
Stream_Read_UINT8(s, byte);
|
|
|
|
*value |= (byte << 24);
|
|
|
|
Stream_Read_UINT8(s, byte);
|
|
|
|
*value |= (byte << 16);
|
|
|
|
Stream_Read_UINT8(s, byte);
|
|
|
|
*value |= (byte << 8);
|
|
|
|
Stream_Read_UINT8(s, byte);
|
|
|
|
*value |= byte;
|
|
|
|
break;
|
|
|
|
|
|
|
|
default:
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
return TRUE;
|
|
|
|
}
|
|
|
|
|
|
|
|
BOOL rdpei_write_8byte_unsigned(wStream* s, UINT64 value)
|
|
|
|
{
|
|
|
|
BYTE byte;
|
|
|
|
|
|
|
|
if (value <= 0x1F)
|
|
|
|
{
|
|
|
|
byte = value & 0x1F;
|
2013-05-14 09:06:25 +04:00
|
|
|
Stream_Write_UINT8(s, byte);
|
2013-05-09 07:18:42 +04:00
|
|
|
}
|
|
|
|
else if (value <= 0x1FFF)
|
|
|
|
{
|
|
|
|
byte = (value >> 8) & 0x1F;
|
2013-05-14 09:06:25 +04:00
|
|
|
byte |= (1 << 5);
|
|
|
|
Stream_Write_UINT8(s, byte);
|
2013-05-09 07:18:42 +04:00
|
|
|
byte = (value & 0xFF);
|
|
|
|
Stream_Write_UINT8(s, byte);
|
|
|
|
}
|
|
|
|
else if (value <= 0x1FFFFF)
|
|
|
|
{
|
|
|
|
byte = (value >> 16) & 0x1F;
|
2013-05-14 09:06:25 +04:00
|
|
|
byte |= (2 << 5);
|
|
|
|
Stream_Write_UINT8(s, byte);
|
2013-05-09 07:18:42 +04:00
|
|
|
byte = (value >> 8) & 0xFF;
|
|
|
|
Stream_Write_UINT8(s, byte);
|
|
|
|
byte = (value & 0xFF);
|
|
|
|
Stream_Write_UINT8(s, byte);
|
|
|
|
}
|
|
|
|
else if (value <= 0x1FFFFF)
|
|
|
|
{
|
|
|
|
byte = (value >> 24) & 0x1F;
|
2013-05-14 09:06:25 +04:00
|
|
|
byte |= (3 << 5);
|
|
|
|
Stream_Write_UINT8(s, byte);
|
2013-05-09 07:18:42 +04:00
|
|
|
byte = (value >> 16) & 0xFF;
|
|
|
|
Stream_Write_UINT8(s, byte);
|
|
|
|
byte = (value >> 8) & 0xFF;
|
|
|
|
Stream_Write_UINT8(s, byte);
|
|
|
|
byte = (value & 0xFF);
|
|
|
|
Stream_Write_UINT8(s, byte);
|
|
|
|
}
|
|
|
|
else if (value <= 0x1FFFFFFF)
|
|
|
|
{
|
|
|
|
byte = (value >> 32) & 0x1F;
|
2013-05-14 09:06:25 +04:00
|
|
|
byte |= (4 << 5);
|
|
|
|
Stream_Write_UINT8(s, byte);
|
2013-05-09 07:18:42 +04:00
|
|
|
byte = (value >> 24) & 0x1F;
|
|
|
|
Stream_Write_UINT8(s, byte);
|
|
|
|
byte = (value >> 16) & 0xFF;
|
|
|
|
Stream_Write_UINT8(s, byte);
|
|
|
|
byte = (value >> 8) & 0xFF;
|
|
|
|
Stream_Write_UINT8(s, byte);
|
|
|
|
byte = (value & 0xFF);
|
|
|
|
Stream_Write_UINT8(s, byte);
|
|
|
|
}
|
|
|
|
else if (value <= 0x1FFFFFFFFF)
|
|
|
|
{
|
|
|
|
byte = (value >> 40) & 0x1F;
|
2013-05-14 09:06:25 +04:00
|
|
|
byte |= (5 << 5);
|
|
|
|
Stream_Write_UINT8(s, byte);
|
2013-05-09 07:18:42 +04:00
|
|
|
byte = (value >> 32) & 0x1F;
|
|
|
|
Stream_Write_UINT8(s, byte);
|
|
|
|
byte = (value >> 24) & 0x1F;
|
|
|
|
Stream_Write_UINT8(s, byte);
|
|
|
|
byte = (value >> 16) & 0xFF;
|
|
|
|
Stream_Write_UINT8(s, byte);
|
|
|
|
byte = (value >> 8) & 0xFF;
|
|
|
|
Stream_Write_UINT8(s, byte);
|
|
|
|
byte = (value & 0xFF);
|
|
|
|
Stream_Write_UINT8(s, byte);
|
|
|
|
}
|
|
|
|
else if (value <= 0x1FFFFFFFFFFF)
|
|
|
|
{
|
|
|
|
byte = (value >> 48) & 0x1F;
|
2013-05-14 09:06:25 +04:00
|
|
|
byte |= (6 << 5);
|
|
|
|
Stream_Write_UINT8(s, byte);
|
2013-05-09 07:18:42 +04:00
|
|
|
byte = (value >> 40) & 0x1F;
|
|
|
|
Stream_Write_UINT8(s, byte);
|
|
|
|
byte = (value >> 32) & 0x1F;
|
|
|
|
Stream_Write_UINT8(s, byte);
|
|
|
|
byte = (value >> 24) & 0x1F;
|
|
|
|
Stream_Write_UINT8(s, byte);
|
|
|
|
byte = (value >> 16) & 0xFF;
|
|
|
|
Stream_Write_UINT8(s, byte);
|
|
|
|
byte = (value >> 8) & 0xFF;
|
|
|
|
Stream_Write_UINT8(s, byte);
|
|
|
|
byte = (value & 0xFF);
|
|
|
|
Stream_Write_UINT8(s, byte);
|
|
|
|
}
|
|
|
|
else if (value <= 0x1FFFFFFFFFFFFF)
|
|
|
|
{
|
|
|
|
byte = (value >> 56) & 0x1F;
|
2013-05-14 09:06:25 +04:00
|
|
|
byte |= (7 << 5);
|
|
|
|
Stream_Write_UINT8(s, byte);
|
2013-05-09 07:18:42 +04:00
|
|
|
byte = (value >> 48) & 0x1F;
|
|
|
|
Stream_Write_UINT8(s, byte);
|
|
|
|
byte = (value >> 40) & 0x1F;
|
|
|
|
Stream_Write_UINT8(s, byte);
|
|
|
|
byte = (value >> 32) & 0x1F;
|
|
|
|
Stream_Write_UINT8(s, byte);
|
|
|
|
byte = (value >> 24) & 0x1F;
|
|
|
|
Stream_Write_UINT8(s, byte);
|
|
|
|
byte = (value >> 16) & 0xFF;
|
|
|
|
Stream_Write_UINT8(s, byte);
|
|
|
|
byte = (value >> 8) & 0xFF;
|
|
|
|
Stream_Write_UINT8(s, byte);
|
|
|
|
byte = (value & 0xFF);
|
|
|
|
Stream_Write_UINT8(s, byte);
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
return FALSE;
|
|
|
|
}
|
|
|
|
|
|
|
|
return TRUE;
|
|
|
|
}
|