/src/FreeRDP/channels/rdpei/rdpei_common.c

Source (jump to first uncovered line)
/**
 * FreeRDP: A Remote Desktop Protocol Implementation
 * Input Virtual Channel Extension
 *
 * Copyright 2013 Marc-Andre Moreau <marcandre.moreau@gmail.com>
 * Copyright 2014 David Fort <contact@hardening-consulting.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/stream.h>

#include "rdpei_common.h"

#include <freerdp/log.h>

#define TAG FREERDP_TAG("channels.rdpei.common")

BOOL rdpei_read_2byte_unsigned(wStream* s, UINT16* value)
{
  BYTE byte = 0;

  if (!Stream_CheckAndLogRequiredLength(TAG, s, 1))
    return FALSE;

  Stream_Read_UINT8(s, byte);

  if (byte & 0x80)
  {
    if (!Stream_CheckAndLogRequiredLength(TAG, s, 1))
      return FALSE;

    *value = (byte & 0x7F) << 8;
    Stream_Read_UINT8(s, byte);
    *value |= byte;
  }
  else
  {
    *value = (byte & 0x7F);
  }

  return TRUE;
}

BOOL rdpei_write_2byte_unsigned(wStream* s, UINT16 value)
{
  BYTE byte = 0;

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

  if (value > 0x7FFF)
    return FALSE;

  if (value >= 0x7F)
  {
    byte = ((value & 0x7F00) >> 8);
    Stream_Write_UINT8(s, byte | 0x80);
    byte = (value & 0xFF);
    Stream_Write_UINT8(s, byte);
  }
  else
  {
    byte = (value & 0x7F);
    Stream_Write_UINT8(s, byte);
  }

  return TRUE;
}

BOOL rdpei_read_2byte_signed(wStream* s, INT16* value)
{
  BYTE byte = 0;
  BOOL negative = 0;

  if (!Stream_CheckAndLogRequiredLength(TAG, s, 1))
    return FALSE;

  Stream_Read_UINT8(s, byte);

  negative = (byte & 0x40) ? TRUE : FALSE;

  *value = (byte & 0x3F);

  if (byte & 0x80)
  {
    if (!Stream_CheckAndLogRequiredLength(TAG, s, 1))
      return FALSE;

    Stream_Read_UINT8(s, byte);
    *value = ((*value & 0xFF) << 8) | byte;
  }

  if (negative)
    *value *= -1;

  return TRUE;
}

BOOL rdpei_write_2byte_signed(wStream* s, INT16 value)
{
  BYTE byte = 0;
  BOOL negative = FALSE;

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

  if (value < 0)
  {
    negative = TRUE;
    value *= -1;
  }

  if (value > 0x3FFF)
    return FALSE;

  if (value >= 0x3F)
  {
    byte = ((value & 0x3F00) >> 8);

    if (negative)
      byte |= 0x40;

    Stream_Write_UINT8(s, byte | 0x80);
    byte = (value & 0xFF);
    Stream_Write_UINT8(s, byte);
  }
  else
  {
    byte = (value & 0x3F);

    if (negative)
      byte |= 0x40;

    Stream_Write_UINT8(s, byte);
  }

  return TRUE;
}

BOOL rdpei_read_4byte_unsigned(wStream* s, UINT32* value)
{
  BYTE byte = 0;
  BYTE count = 0;

  if (!Stream_CheckAndLogRequiredLength(TAG, s, 1))
    return FALSE;

  Stream_Read_UINT8(s, byte);

  count = (byte & 0xC0) >> 6;

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

  switch (count)
  {
    case 0:
      *value = (byte & 0x3F);
      break;

    case 1:
      *value = (byte & 0x3F) << 8;
      Stream_Read_UINT8(s, byte);
      *value |= byte;
      break;

    case 2:
      *value = (byte & 0x3F) << 16;
      Stream_Read_UINT8(s, byte);
      *value |= (byte << 8);
      Stream_Read_UINT8(s, byte);
      *value |= byte;
      break;

    case 3:
      *value = (byte & 0x3F) << 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_4byte_unsigned(wStream* s, UINT32 value)
{
  BYTE byte = 0;

  if (!Stream_EnsureRemainingCapacity(s, 4))
    return FALSE;

  if (value <= 0x3FUL)
  {
    Stream_Write_UINT8(s, value);
  }
  else if (value <= 0x3FFFUL)
  {
    byte = (value >> 8) & 0x3F;
    Stream_Write_UINT8(s, byte | 0x40);
    byte = (value & 0xFF);
    Stream_Write_UINT8(s, byte);
  }
  else if (value <= 0x3FFFFFUL)
  {
    byte = (value >> 16) & 0x3F;
    Stream_Write_UINT8(s, byte | 0x80);
    byte = (value >> 8) & 0xFF;
    Stream_Write_UINT8(s, byte);
    byte = (value & 0xFF);
    Stream_Write_UINT8(s, byte);
  }
  else if (value <= 0x3FFFFFFFUL)
  {
    byte = (value >> 24) & 0x3F;
    Stream_Write_UINT8(s, byte | 0xC0);
    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;
}

BOOL rdpei_read_4byte_signed(wStream* s, INT32* value)
{
  BYTE byte = 0;
  BYTE count = 0;
  BOOL negative = 0;

  if (!Stream_CheckAndLogRequiredLength(TAG, s, 1))
    return FALSE;

  Stream_Read_UINT8(s, byte);

  count = (byte & 0xC0) >> 6;
  negative = (byte & 0x20) ? TRUE : FALSE;

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

  switch (count)
  {
    case 0:
      *value = (byte & 0x1F);
      break;

    case 1:
      *value = (byte & 0x1F) << 8;
      Stream_Read_UINT8(s, byte);
      *value |= byte;
      break;

    case 2:
      *value = (byte & 0x1F) << 16;
      Stream_Read_UINT8(s, byte);
      *value |= (byte << 8);
      Stream_Read_UINT8(s, byte);
      *value |= byte;
      break;

    case 3:
      *value = (byte & 0x1F) << 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;
  }

  if (negative)
    *value *= -1;

  return TRUE;
}

BOOL rdpei_write_4byte_signed(wStream* s, INT32 value)
{
  BYTE byte = 0;
  BOOL negative = FALSE;

  if (!Stream_EnsureRemainingCapacity(s, 4))
    return FALSE;

  if (value < 0)
  {
    negative = TRUE;
    value *= -1;
  }

  if (value <= 0x1FL)
  {
    byte = value & 0x1F;

    if (negative)
      byte |= 0x20;

    Stream_Write_UINT8(s, byte);
  }
  else if (value <= 0x1FFFL)
  {
    byte = (value >> 8) & 0x1F;

    if (negative)
      byte |= 0x20;

    Stream_Write_UINT8(s, byte | 0x40);
    byte = (value & 0xFF);
    Stream_Write_UINT8(s, byte);
  }
  else if (value <= 0x1FFFFFL)
  {
    byte = (value >> 16) & 0x1F;

    if (negative)
      byte |= 0x20;

    Stream_Write_UINT8(s, byte | 0x80);
    byte = (value >> 8) & 0xFF;
    Stream_Write_UINT8(s, byte);
    byte = (value & 0xFF);
    Stream_Write_UINT8(s, byte);
  }
  else if (value <= 0x1FFFFFFFL)
  {
    byte = (value >> 24) & 0x1F;

    if (negative)
      byte |= 0x20;

    Stream_Write_UINT8(s, byte | 0xC0);
    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;
}

BOOL rdpei_read_8byte_unsigned(wStream* s, UINT64* value)
{
  UINT64 byte = 0;
  BYTE count = 0;

  if (!Stream_CheckAndLogRequiredLength(TAG, s, 1))
    return FALSE;

  Stream_Read_UINT8(s, byte);

  count = (byte & 0xE0) >> 5;

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

  switch (count)
  {
    case 0:
      *value = (byte & 0x1F);
      break;

    case 1:
      *value = (byte & 0x1FU) << 8U;
      Stream_Read_UINT8(s, byte);
      *value |= byte;
      break;

    case 2:
      *value = (byte & 0x1FU) << 16U;
      Stream_Read_UINT8(s, byte);
      *value |= (byte << 8U);
      Stream_Read_UINT8(s, byte);
      *value |= byte;
      break;

    case 3:
      *value = (byte & 0x1FU) << 24U;
      Stream_Read_UINT8(s, byte);
      *value |= (byte << 16U);
      Stream_Read_UINT8(s, byte);
      *value |= (byte << 8U);
      Stream_Read_UINT8(s, byte);
      *value |= byte;
      break;

    case 4:
      *value = ((byte & 0x1FU)) << 32U;
      Stream_Read_UINT8(s, byte);
      *value |= (byte << 24U);
      Stream_Read_UINT8(s, byte);
      *value |= (byte << 16U);
      Stream_Read_UINT8(s, byte);
      *value |= (byte << 8U);
      Stream_Read_UINT8(s, byte);
      *value |= byte;
      break;

    case 5:
      *value = ((byte & 0x1FU)) << 40U;
      Stream_Read_UINT8(s, byte);
      *value |= ((byte) << 32U);
      Stream_Read_UINT8(s, byte);
      *value |= (byte << 24U);
      Stream_Read_UINT8(s, byte);
      *value |= (byte << 16U);
      Stream_Read_UINT8(s, byte);
      *value |= (byte << 8U);
      Stream_Read_UINT8(s, byte);
      *value |= byte;
      break;

    case 6:
      *value = ((byte & 0x1FU)) << 48U;
      Stream_Read_UINT8(s, byte);
      *value |= ((byte) << 40U);
      Stream_Read_UINT8(s, byte);
      *value |= ((byte) << 32U);
      Stream_Read_UINT8(s, byte);
      *value |= (byte << 24U);
      Stream_Read_UINT8(s, byte);
      *value |= (byte << 16U);
      Stream_Read_UINT8(s, byte);
      *value |= (byte << 8U);
      Stream_Read_UINT8(s, byte);
      *value |= byte;
      break;

    case 7:
      *value = ((byte & 0x1FU)) << 56U;
      Stream_Read_UINT8(s, byte);
      *value |= ((byte) << 48U);
      Stream_Read_UINT8(s, byte);
      *value |= ((byte) << 40U);
      Stream_Read_UINT8(s, byte);
      *value |= ((byte) << 32U);
      Stream_Read_UINT8(s, byte);
      *value |= (byte << 24U);
      Stream_Read_UINT8(s, byte);
      *value |= (byte << 16U);
      Stream_Read_UINT8(s, byte);
      *value |= (byte << 8U);
      Stream_Read_UINT8(s, byte);
      *value |= byte;
      break;

    default:
      break;
  }

  return TRUE;
}

BOOL rdpei_write_8byte_unsigned(wStream* s, UINT64 value)
{
  BYTE byte = 0;

  if (!Stream_EnsureRemainingCapacity(s, 8))
    return FALSE;

  if (value <= 0x1FULL)
  {
    byte = value & 0x1F;
    Stream_Write_UINT8(s, byte);
  }
  else if (value <= 0x1FFFULL)
  {
    byte = (value >> 8) & 0x1F;
    byte |= (1 << 5);
    Stream_Write_UINT8(s, byte);
    byte = (value & 0xFF);
    Stream_Write_UINT8(s, byte);
  }
  else if (value <= 0x1FFFFFULL)
  {
    byte = (value >> 16) & 0x1F;
    byte |= (2 << 5);
    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 <= 0x1FFFFFFFULL)
  {
    byte = (value >> 24) & 0x1F;
    byte |= (3 << 5);
    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 <= 0x1FFFFFFFFFULL)
  {
    byte = (value >> 32) & 0x1F;
    byte |= (4 << 5);
    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 <= 0x1FFFFFFFFFFFULL)
  {
    byte = (value >> 40) & 0x1F;
    byte |= (5 << 5);
    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 <= 0x1FFFFFFFFFFFFFULL)
  {
    byte = (value >> 48) & 0x1F;
    byte |= (6 << 5);
    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 if (value <= 0x1FFFFFFFFFFFFFFFULL)
  {
    byte = (value >> 56) & 0x1F;
    byte |= (7 << 5);
    Stream_Write_UINT8(s, byte);
    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;
}

void touch_event_reset(RDPINPUT_TOUCH_EVENT* event)
{
  for (UINT16 i = 0; i < event->frameCount; i++)
    touch_frame_reset(&event->frames[i]);

  free(event->frames);
  event->frames = NULL;
  event->frameCount = 0;
}

void touch_frame_reset(RDPINPUT_TOUCH_FRAME* frame)
{
  free(frame->contacts);
  frame->contacts = NULL;
  frame->contactCount = 0;
}

void pen_event_reset(RDPINPUT_PEN_EVENT* event)
{
  for (UINT16 i = 0; i < event->frameCount; i++)
    pen_frame_reset(&event->frames[i]);

  free(event->frames);
  event->frames = NULL;
  event->frameCount = 0;
}

void pen_frame_reset(RDPINPUT_PEN_FRAME* frame)
{
  free(frame->contacts);
  frame->contacts = NULL;
  frame->contactCount = 0;
}

Coverage Report

Created: 2024-09-08 06:20

Line	Count	Source (jump to first uncovered line)
1		/**
2		* FreeRDP: A Remote Desktop Protocol Implementation
3		* Input Virtual Channel Extension
4		*
5		* Copyright 2013 Marc-Andre Moreau <marcandre.moreau@gmail.com>
6		* Copyright 2014 David Fort <contact@hardening-consulting.com>
7		*
8		* Licensed under the Apache License, Version 2.0 (the "License");
9		* you may not use this file except in compliance with the License.
10		* You may obtain a copy of the License at
11		*
12		* http://www.apache.org/licenses/LICENSE-2.0
13		*
14		* Unless required by applicable law or agreed to in writing, software
15		* distributed under the License is distributed on an "AS IS" BASIS,
16		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17		* See the License for the specific language governing permissions and
18		* limitations under the License.
19		*/
20
21		#include <freerdp/config.h>
22
23		#include <winpr/crt.h>
24		#include <winpr/stream.h>
25
26		#include "rdpei_common.h"
27
28		#include <freerdp/log.h>
29
30		#define TAG FREERDP_TAG("channels.rdpei.common")
31
32		BOOL rdpei_read_2byte_unsigned(wStream* s, UINT16* value)
33	0	{
34	0	BYTE byte = 0;
35
36	0	if (!Stream_CheckAndLogRequiredLength(TAG, s, 1))
37	0	return FALSE;
38
39	0	Stream_Read_UINT8(s, byte);
40
41	0	if (byte & 0x80)
42	0	{
43	0	if (!Stream_CheckAndLogRequiredLength(TAG, s, 1))
44	0	return FALSE;
45
46	0	*value = (byte & 0x7F) << 8;
47	0	Stream_Read_UINT8(s, byte);
48	0	*value \|= byte;
49	0	}
50	0	else
51	0	{
52	0	*value = (byte & 0x7F);
53	0	}
54
55	0	return TRUE;
56	0	}
57
58		BOOL rdpei_write_2byte_unsigned(wStream* s, UINT16 value)
59	0	{
60	0	BYTE byte = 0;
61
62	0	if (!Stream_EnsureRemainingCapacity(s, 2))
63	0	return FALSE;
64
65	0	if (value > 0x7FFF)
66	0	return FALSE;
67
68	0	if (value >= 0x7F)
69	0	{
70	0	byte = ((value & 0x7F00) >> 8);
71	0	Stream_Write_UINT8(s, byte \| 0x80);
72	0	byte = (value & 0xFF);
73	0	Stream_Write_UINT8(s, byte);
74	0	}
75	0	else
76	0	{
77	0	byte = (value & 0x7F);
78	0	Stream_Write_UINT8(s, byte);
79	0	}
80
81	0	return TRUE;
82	0	}
83
84		BOOL rdpei_read_2byte_signed(wStream* s, INT16* value)
85	0	{
86	0	BYTE byte = 0;
87	0	BOOL negative = 0;
88
89	0	if (!Stream_CheckAndLogRequiredLength(TAG, s, 1))
90	0	return FALSE;
91
92	0	Stream_Read_UINT8(s, byte);
93
94	0	negative = (byte & 0x40) ? TRUE : FALSE;
95
96	0	*value = (byte & 0x3F);
97
98	0	if (byte & 0x80)
99	0	{
100	0	if (!Stream_CheckAndLogRequiredLength(TAG, s, 1))
101	0	return FALSE;
102
103	0	Stream_Read_UINT8(s, byte);
104	0	value = ((value & 0xFF) << 8) \| byte;
105	0	}
106
107	0	if (negative)
108	0	value = -1;
109
110	0	return TRUE;
111	0	}
112
113		BOOL rdpei_write_2byte_signed(wStream* s, INT16 value)
114	0	{
115	0	BYTE byte = 0;
116	0	BOOL negative = FALSE;
117
118	0	if (!Stream_EnsureRemainingCapacity(s, 2))
119	0	return FALSE;
120
121	0	if (value < 0)
122	0	{
123	0	negative = TRUE;
124	0	value *= -1;
125	0	}
126
127	0	if (value > 0x3FFF)
128	0	return FALSE;
129
130	0	if (value >= 0x3F)
131	0	{
132	0	byte = ((value & 0x3F00) >> 8);
133
134	0	if (negative)
135	0	byte \|= 0x40;
136
137	0	Stream_Write_UINT8(s, byte \| 0x80);
138	0	byte = (value & 0xFF);
139	0	Stream_Write_UINT8(s, byte);
140	0	}
141	0	else
142	0	{
143	0	byte = (value & 0x3F);
144
145	0	if (negative)
146	0	byte \|= 0x40;
147
148	0	Stream_Write_UINT8(s, byte);
149	0	}
150
151	0	return TRUE;
152	0	}
153
154		BOOL rdpei_read_4byte_unsigned(wStream* s, UINT32* value)
155	0	{
156	0	BYTE byte = 0;
157	0	BYTE count = 0;
158
159	0	if (!Stream_CheckAndLogRequiredLength(TAG, s, 1))
160	0	return FALSE;
161
162	0	Stream_Read_UINT8(s, byte);
163
164	0	count = (byte & 0xC0) >> 6;
165
166	0	if (!Stream_CheckAndLogRequiredLength(TAG, s, count))
167	0	return FALSE;
168
169	0	switch (count)
170	0	{
171	0	case 0:
172	0	*value = (byte & 0x3F);
173	0	break;
174
175	0	case 1:
176	0	*value = (byte & 0x3F) << 8;
177	0	Stream_Read_UINT8(s, byte);
178	0	*value \|= byte;
179	0	break;
180
181	0	case 2:
182	0	*value = (byte & 0x3F) << 16;
183	0	Stream_Read_UINT8(s, byte);
184	0	*value \|= (byte << 8);
185	0	Stream_Read_UINT8(s, byte);
186	0	*value \|= byte;
187	0	break;
188
189	0	case 3:
190	0	*value = (byte & 0x3F) << 24;
191	0	Stream_Read_UINT8(s, byte);
192	0	*value \|= (byte << 16);
193	0	Stream_Read_UINT8(s, byte);
194	0	*value \|= (byte << 8);
195	0	Stream_Read_UINT8(s, byte);
196	0	*value \|= byte;
197	0	break;
198
199	0	default:
200	0	break;
201	0	}
202
203	0	return TRUE;
204	0	}
205
206		BOOL rdpei_write_4byte_unsigned(wStream* s, UINT32 value)
207	0	{
208	0	BYTE byte = 0;
209
210	0	if (!Stream_EnsureRemainingCapacity(s, 4))
211	0	return FALSE;
212
213	0	if (value <= 0x3FUL)
214	0	{
215	0	Stream_Write_UINT8(s, value);
216	0	}
217	0	else if (value <= 0x3FFFUL)
218	0	{
219	0	byte = (value >> 8) & 0x3F;
220	0	Stream_Write_UINT8(s, byte \| 0x40);
221	0	byte = (value & 0xFF);
222	0	Stream_Write_UINT8(s, byte);
223	0	}
224	0	else if (value <= 0x3FFFFFUL)
225	0	{
226	0	byte = (value >> 16) & 0x3F;
227	0	Stream_Write_UINT8(s, byte \| 0x80);
228	0	byte = (value >> 8) & 0xFF;
229	0	Stream_Write_UINT8(s, byte);
230	0	byte = (value & 0xFF);
231	0	Stream_Write_UINT8(s, byte);
232	0	}
233	0	else if (value <= 0x3FFFFFFFUL)
234	0	{
235	0	byte = (value >> 24) & 0x3F;
236	0	Stream_Write_UINT8(s, byte \| 0xC0);
237	0	byte = (value >> 16) & 0xFF;
238	0	Stream_Write_UINT8(s, byte);
239	0	byte = (value >> 8) & 0xFF;
240	0	Stream_Write_UINT8(s, byte);
241	0	byte = (value & 0xFF);
242	0	Stream_Write_UINT8(s, byte);
243	0	}
244	0	else
245	0	{
246	0	return FALSE;
247	0	}
248
249	0	return TRUE;
250	0	}
251
252		BOOL rdpei_read_4byte_signed(wStream* s, INT32* value)
253	0	{
254	0	BYTE byte = 0;
255	0	BYTE count = 0;
256	0	BOOL negative = 0;
257
258	0	if (!Stream_CheckAndLogRequiredLength(TAG, s, 1))
259	0	return FALSE;
260
261	0	Stream_Read_UINT8(s, byte);
262
263	0	count = (byte & 0xC0) >> 6;
264	0	negative = (byte & 0x20) ? TRUE : FALSE;
265
266	0	if (!Stream_CheckAndLogRequiredLength(TAG, s, count))
267	0	return FALSE;
268
269	0	switch (count)
270	0	{
271	0	case 0:
272	0	*value = (byte & 0x1F);
273	0	break;
274
275	0	case 1:
276	0	*value = (byte & 0x1F) << 8;
277	0	Stream_Read_UINT8(s, byte);
278	0	*value \|= byte;
279	0	break;
280
281	0	case 2:
282	0	*value = (byte & 0x1F) << 16;
283	0	Stream_Read_UINT8(s, byte);
284	0	*value \|= (byte << 8);
285	0	Stream_Read_UINT8(s, byte);
286	0	*value \|= byte;
287	0	break;
288
289	0	case 3:
290	0	*value = (byte & 0x1F) << 24;
291	0	Stream_Read_UINT8(s, byte);
292	0	*value \|= (byte << 16);
293	0	Stream_Read_UINT8(s, byte);
294	0	*value \|= (byte << 8);
295	0	Stream_Read_UINT8(s, byte);
296	0	*value \|= byte;
297	0	break;
298
299	0	default:
300	0	break;
301	0	}
302
303	0	if (negative)
304	0	value = -1;
305
306	0	return TRUE;
307	0	}
308
309		BOOL rdpei_write_4byte_signed(wStream* s, INT32 value)
310	0	{
311	0	BYTE byte = 0;
312	0	BOOL negative = FALSE;
313
314	0	if (!Stream_EnsureRemainingCapacity(s, 4))
315	0	return FALSE;
316
317	0	if (value < 0)
318	0	{
319	0	negative = TRUE;
320	0	value *= -1;
321	0	}
322
323	0	if (value <= 0x1FL)
324	0	{
325	0	byte = value & 0x1F;
326
327	0	if (negative)
328	0	byte \|= 0x20;
329
330	0	Stream_Write_UINT8(s, byte);
331	0	}
332	0	else if (value <= 0x1FFFL)
333	0	{
334	0	byte = (value >> 8) & 0x1F;
335
336	0	if (negative)
337	0	byte \|= 0x20;
338
339	0	Stream_Write_UINT8(s, byte \| 0x40);
340	0	byte = (value & 0xFF);
341	0	Stream_Write_UINT8(s, byte);
342	0	}
343	0	else if (value <= 0x1FFFFFL)
344	0	{
345	0	byte = (value >> 16) & 0x1F;
346
347	0	if (negative)
348	0	byte \|= 0x20;
349
350	0	Stream_Write_UINT8(s, byte \| 0x80);
351	0	byte = (value >> 8) & 0xFF;
352	0	Stream_Write_UINT8(s, byte);
353	0	byte = (value & 0xFF);
354	0	Stream_Write_UINT8(s, byte);
355	0	}
356	0	else if (value <= 0x1FFFFFFFL)
357	0	{
358	0	byte = (value >> 24) & 0x1F;
359
360	0	if (negative)
361	0	byte \|= 0x20;
362
363	0	Stream_Write_UINT8(s, byte \| 0xC0);
364	0	byte = (value >> 16) & 0xFF;
365	0	Stream_Write_UINT8(s, byte);
366	0	byte = (value >> 8) & 0xFF;
367	0	Stream_Write_UINT8(s, byte);
368	0	byte = (value & 0xFF);
369	0	Stream_Write_UINT8(s, byte);
370	0	}
371	0	else
372	0	{
373	0	return FALSE;
374	0	}
375
376	0	return TRUE;
377	0	}
378
379		BOOL rdpei_read_8byte_unsigned(wStream* s, UINT64* value)
380	0	{
381	0	UINT64 byte = 0;
382	0	BYTE count = 0;
383
384	0	if (!Stream_CheckAndLogRequiredLength(TAG, s, 1))
385	0	return FALSE;
386
387	0	Stream_Read_UINT8(s, byte);
388
389	0	count = (byte & 0xE0) >> 5;
390
391	0	if (!Stream_CheckAndLogRequiredLength(TAG, s, count))
392	0	return FALSE;
393
394	0	switch (count)
395	0	{
396	0	case 0:
397	0	*value = (byte & 0x1F);
398	0	break;
399
400	0	case 1:
401	0	*value = (byte & 0x1FU) << 8U;
402	0	Stream_Read_UINT8(s, byte);
403	0	*value \|= byte;
404	0	break;
405
406	0	case 2:
407	0	*value = (byte & 0x1FU) << 16U;
408	0	Stream_Read_UINT8(s, byte);
409	0	*value \|= (byte << 8U);
410	0	Stream_Read_UINT8(s, byte);
411	0	*value \|= byte;
412	0	break;
413
414	0	case 3:
415	0	*value = (byte & 0x1FU) << 24U;
416	0	Stream_Read_UINT8(s, byte);
417	0	*value \|= (byte << 16U);
418	0	Stream_Read_UINT8(s, byte);
419	0	*value \|= (byte << 8U);
420	0	Stream_Read_UINT8(s, byte);
421	0	*value \|= byte;
422	0	break;
423
424	0	case 4:
425	0	*value = ((byte & 0x1FU)) << 32U;
426	0	Stream_Read_UINT8(s, byte);
427	0	*value \|= (byte << 24U);
428	0	Stream_Read_UINT8(s, byte);
429	0	*value \|= (byte << 16U);
430	0	Stream_Read_UINT8(s, byte);
431	0	*value \|= (byte << 8U);
432	0	Stream_Read_UINT8(s, byte);
433	0	*value \|= byte;
434	0	break;
435
436	0	case 5:
437	0	*value = ((byte & 0x1FU)) << 40U;
438	0	Stream_Read_UINT8(s, byte);
439	0	*value \|= ((byte) << 32U);
440	0	Stream_Read_UINT8(s, byte);
441	0	*value \|= (byte << 24U);
442	0	Stream_Read_UINT8(s, byte);
443	0	*value \|= (byte << 16U);
444	0	Stream_Read_UINT8(s, byte);
445	0	*value \|= (byte << 8U);
446	0	Stream_Read_UINT8(s, byte);
447	0	*value \|= byte;
448	0	break;
449
450	0	case 6:
451	0	*value = ((byte & 0x1FU)) << 48U;
452	0	Stream_Read_UINT8(s, byte);
453	0	*value \|= ((byte) << 40U);
454	0	Stream_Read_UINT8(s, byte);
455	0	*value \|= ((byte) << 32U);
456	0	Stream_Read_UINT8(s, byte);
457	0	*value \|= (byte << 24U);
458	0	Stream_Read_UINT8(s, byte);
459	0	*value \|= (byte << 16U);
460	0	Stream_Read_UINT8(s, byte);
461	0	*value \|= (byte << 8U);
462	0	Stream_Read_UINT8(s, byte);
463	0	*value \|= byte;
464	0	break;
465
466	0	case 7:
467	0	*value = ((byte & 0x1FU)) << 56U;
468	0	Stream_Read_UINT8(s, byte);
469	0	*value \|= ((byte) << 48U);
470	0	Stream_Read_UINT8(s, byte);
471	0	*value \|= ((byte) << 40U);
472	0	Stream_Read_UINT8(s, byte);
473	0	*value \|= ((byte) << 32U);
474	0	Stream_Read_UINT8(s, byte);
475	0	*value \|= (byte << 24U);
476	0	Stream_Read_UINT8(s, byte);
477	0	*value \|= (byte << 16U);
478	0	Stream_Read_UINT8(s, byte);
479	0	*value \|= (byte << 8U);
480	0	Stream_Read_UINT8(s, byte);
481	0	*value \|= byte;
482	0	break;
483
484	0	default:
485	0	break;
486	0	}
487
488	0	return TRUE;
489	0	}
490
491		BOOL rdpei_write_8byte_unsigned(wStream* s, UINT64 value)
492	0	{
493	0	BYTE byte = 0;
494
495	0	if (!Stream_EnsureRemainingCapacity(s, 8))
496	0	return FALSE;
497
498	0	if (value <= 0x1FULL)
499	0	{
500	0	byte = value & 0x1F;
501	0	Stream_Write_UINT8(s, byte);
502	0	}
503	0	else if (value <= 0x1FFFULL)
504	0	{
505	0	byte = (value >> 8) & 0x1F;
506	0	byte \|= (1 << 5);
507	0	Stream_Write_UINT8(s, byte);
508	0	byte = (value & 0xFF);
509	0	Stream_Write_UINT8(s, byte);
510	0	}
511	0	else if (value <= 0x1FFFFFULL)
512	0	{
513	0	byte = (value >> 16) & 0x1F;
514	0	byte \|= (2 << 5);
515	0	Stream_Write_UINT8(s, byte);
516	0	byte = (value >> 8) & 0xFF;
517	0	Stream_Write_UINT8(s, byte);
518	0	byte = (value & 0xFF);
519	0	Stream_Write_UINT8(s, byte);
520	0	}
521	0	else if (value <= 0x1FFFFFFFULL)
522	0	{
523	0	byte = (value >> 24) & 0x1F;
524	0	byte \|= (3 << 5);
525	0	Stream_Write_UINT8(s, byte);
526	0	byte = (value >> 16) & 0xFF;
527	0	Stream_Write_UINT8(s, byte);
528	0	byte = (value >> 8) & 0xFF;
529	0	Stream_Write_UINT8(s, byte);
530	0	byte = (value & 0xFF);
531	0	Stream_Write_UINT8(s, byte);
532	0	}
533	0	else if (value <= 0x1FFFFFFFFFULL)
534	0	{
535	0	byte = (value >> 32) & 0x1F;
536	0	byte \|= (4 << 5);
537	0	Stream_Write_UINT8(s, byte);
538	0	byte = (value >> 24) & 0x1F;
539	0	Stream_Write_UINT8(s, byte);
540	0	byte = (value >> 16) & 0xFF;
541	0	Stream_Write_UINT8(s, byte);
542	0	byte = (value >> 8) & 0xFF;
543	0	Stream_Write_UINT8(s, byte);
544	0	byte = (value & 0xFF);
545	0	Stream_Write_UINT8(s, byte);
546	0	}
547	0	else if (value <= 0x1FFFFFFFFFFFULL)
548	0	{
549	0	byte = (value >> 40) & 0x1F;
550	0	byte \|= (5 << 5);
551	0	Stream_Write_UINT8(s, byte);
552	0	byte = (value >> 32) & 0x1F;
553	0	Stream_Write_UINT8(s, byte);
554	0	byte = (value >> 24) & 0x1F;
555	0	Stream_Write_UINT8(s, byte);
556	0	byte = (value >> 16) & 0xFF;
557	0	Stream_Write_UINT8(s, byte);
558	0	byte = (value >> 8) & 0xFF;
559	0	Stream_Write_UINT8(s, byte);
560	0	byte = (value & 0xFF);
561	0	Stream_Write_UINT8(s, byte);
562	0	}
563	0	else if (value <= 0x1FFFFFFFFFFFFFULL)
564	0	{
565	0	byte = (value >> 48) & 0x1F;
566	0	byte \|= (6 << 5);
567	0	Stream_Write_UINT8(s, byte);
568	0	byte = (value >> 40) & 0x1F;
569	0	Stream_Write_UINT8(s, byte);
570	0	byte = (value >> 32) & 0x1F;
571	0	Stream_Write_UINT8(s, byte);
572	0	byte = (value >> 24) & 0x1F;
573	0	Stream_Write_UINT8(s, byte);
574	0	byte = (value >> 16) & 0xFF;
575	0	Stream_Write_UINT8(s, byte);
576	0	byte = (value >> 8) & 0xFF;
577	0	Stream_Write_UINT8(s, byte);
578	0	byte = (value & 0xFF);
579	0	Stream_Write_UINT8(s, byte);
580	0	}
581	0	else if (value <= 0x1FFFFFFFFFFFFFFFULL)
582	0	{
583	0	byte = (value >> 56) & 0x1F;
584	0	byte \|= (7 << 5);
585	0	Stream_Write_UINT8(s, byte);
586	0	byte = (value >> 48) & 0x1F;
587	0	Stream_Write_UINT8(s, byte);
588	0	byte = (value >> 40) & 0x1F;
589	0	Stream_Write_UINT8(s, byte);
590	0	byte = (value >> 32) & 0x1F;
591	0	Stream_Write_UINT8(s, byte);
592	0	byte = (value >> 24) & 0x1F;
593	0	Stream_Write_UINT8(s, byte);
594	0	byte = (value >> 16) & 0xFF;
595	0	Stream_Write_UINT8(s, byte);
596	0	byte = (value >> 8) & 0xFF;
597	0	Stream_Write_UINT8(s, byte);
598	0	byte = (value & 0xFF);
599	0	Stream_Write_UINT8(s, byte);
600	0	}
601	0	else
602	0	{
603	0	return FALSE;
604	0	}
605
606	0	return TRUE;
607	0	}
608
609		void touch_event_reset(RDPINPUT_TOUCH_EVENT* event)
610	0	{
611	0	for (UINT16 i = 0; i < event->frameCount; i++)
612	0	touch_frame_reset(&event->frames[i]);
613
614	0	free(event->frames);
615	0	event->frames = NULL;
616	0	event->frameCount = 0;
617	0	}
618
619		void touch_frame_reset(RDPINPUT_TOUCH_FRAME* frame)
620	0	{
621	0	free(frame->contacts);
622	0	frame->contacts = NULL;
623	0	frame->contactCount = 0;
624	0	}
625
626		void pen_event_reset(RDPINPUT_PEN_EVENT* event)
627	0	{
628	0	for (UINT16 i = 0; i < event->frameCount; i++)
629	0	pen_frame_reset(&event->frames[i]);
630
631	0	free(event->frames);
632	0	event->frames = NULL;
633	0	event->frameCount = 0;
634	0	}
635
636		void pen_frame_reset(RDPINPUT_PEN_FRAME* frame)
637	0	{
638	0	free(frame->contacts);
639	0	frame->contacts = NULL;
640	0	frame->contactCount = 0;
641	0	}