Coverage Report

Created: 2024-09-08 06:16

/src/FreeRDP/winpr/libwinpr/utils/collections/BitStream.c
Line
Count
Source (jump to first uncovered line)
1
/**
2
 * WinPR: Windows Portable Runtime
3
 * BitStream
4
 *
5
 * Copyright 2014 Marc-Andre Moreau <marcandre.moreau@gmail.com>
6
 *
7
 * Licensed under the Apache License, Version 2.0 (the "License");
8
 * you may not use this file except in compliance with the License.
9
 * You may obtain a copy of the License at
10
 *
11
 *     http://www.apache.org/licenses/LICENSE-2.0
12
 *
13
 * Unless required by applicable law or agreed to in writing, software
14
 * distributed under the License is distributed on an "AS IS" BASIS,
15
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16
 * See the License for the specific language governing permissions and
17
 * limitations under the License.
18
 */
19
20
#include <winpr/assert.h>
21
#include <winpr/config.h>
22
23
#include <winpr/print.h>
24
#include <winpr/bitstream.h>
25
26
static const char* BYTE_BIT_STRINGS_LSB[256] = {
27
  "00000000", "00000001", "00000010", "00000011", "00000100", "00000101", "00000110", "00000111",
28
  "00001000", "00001001", "00001010", "00001011", "00001100", "00001101", "00001110", "00001111",
29
  "00010000", "00010001", "00010010", "00010011", "00010100", "00010101", "00010110", "00010111",
30
  "00011000", "00011001", "00011010", "00011011", "00011100", "00011101", "00011110", "00011111",
31
  "00100000", "00100001", "00100010", "00100011", "00100100", "00100101", "00100110", "00100111",
32
  "00101000", "00101001", "00101010", "00101011", "00101100", "00101101", "00101110", "00101111",
33
  "00110000", "00110001", "00110010", "00110011", "00110100", "00110101", "00110110", "00110111",
34
  "00111000", "00111001", "00111010", "00111011", "00111100", "00111101", "00111110", "00111111",
35
  "01000000", "01000001", "01000010", "01000011", "01000100", "01000101", "01000110", "01000111",
36
  "01001000", "01001001", "01001010", "01001011", "01001100", "01001101", "01001110", "01001111",
37
  "01010000", "01010001", "01010010", "01010011", "01010100", "01010101", "01010110", "01010111",
38
  "01011000", "01011001", "01011010", "01011011", "01011100", "01011101", "01011110", "01011111",
39
  "01100000", "01100001", "01100010", "01100011", "01100100", "01100101", "01100110", "01100111",
40
  "01101000", "01101001", "01101010", "01101011", "01101100", "01101101", "01101110", "01101111",
41
  "01110000", "01110001", "01110010", "01110011", "01110100", "01110101", "01110110", "01110111",
42
  "01111000", "01111001", "01111010", "01111011", "01111100", "01111101", "01111110", "01111111",
43
  "10000000", "10000001", "10000010", "10000011", "10000100", "10000101", "10000110", "10000111",
44
  "10001000", "10001001", "10001010", "10001011", "10001100", "10001101", "10001110", "10001111",
45
  "10010000", "10010001", "10010010", "10010011", "10010100", "10010101", "10010110", "10010111",
46
  "10011000", "10011001", "10011010", "10011011", "10011100", "10011101", "10011110", "10011111",
47
  "10100000", "10100001", "10100010", "10100011", "10100100", "10100101", "10100110", "10100111",
48
  "10101000", "10101001", "10101010", "10101011", "10101100", "10101101", "10101110", "10101111",
49
  "10110000", "10110001", "10110010", "10110011", "10110100", "10110101", "10110110", "10110111",
50
  "10111000", "10111001", "10111010", "10111011", "10111100", "10111101", "10111110", "10111111",
51
  "11000000", "11000001", "11000010", "11000011", "11000100", "11000101", "11000110", "11000111",
52
  "11001000", "11001001", "11001010", "11001011", "11001100", "11001101", "11001110", "11001111",
53
  "11010000", "11010001", "11010010", "11010011", "11010100", "11010101", "11010110", "11010111",
54
  "11011000", "11011001", "11011010", "11011011", "11011100", "11011101", "11011110", "11011111",
55
  "11100000", "11100001", "11100010", "11100011", "11100100", "11100101", "11100110", "11100111",
56
  "11101000", "11101001", "11101010", "11101011", "11101100", "11101101", "11101110", "11101111",
57
  "11110000", "11110001", "11110010", "11110011", "11110100", "11110101", "11110110", "11110111",
58
  "11111000", "11111001", "11111010", "11111011", "11111100", "11111101", "11111110", "11111111"
59
};
60
61
static const char* BYTE_BIT_STRINGS_MSB[256] = {
62
  "00000000", "10000000", "01000000", "11000000", "00100000", "10100000", "01100000", "11100000",
63
  "00010000", "10010000", "01010000", "11010000", "00110000", "10110000", "01110000", "11110000",
64
  "00001000", "10001000", "01001000", "11001000", "00101000", "10101000", "01101000", "11101000",
65
  "00011000", "10011000", "01011000", "11011000", "00111000", "10111000", "01111000", "11111000",
66
  "00000100", "10000100", "01000100", "11000100", "00100100", "10100100", "01100100", "11100100",
67
  "00010100", "10010100", "01010100", "11010100", "00110100", "10110100", "01110100", "11110100",
68
  "00001100", "10001100", "01001100", "11001100", "00101100", "10101100", "01101100", "11101100",
69
  "00011100", "10011100", "01011100", "11011100", "00111100", "10111100", "01111100", "11111100",
70
  "00000010", "10000010", "01000010", "11000010", "00100010", "10100010", "01100010", "11100010",
71
  "00010010", "10010010", "01010010", "11010010", "00110010", "10110010", "01110010", "11110010",
72
  "00001010", "10001010", "01001010", "11001010", "00101010", "10101010", "01101010", "11101010",
73
  "00011010", "10011010", "01011010", "11011010", "00111010", "10111010", "01111010", "11111010",
74
  "00000110", "10000110", "01000110", "11000110", "00100110", "10100110", "01100110", "11100110",
75
  "00010110", "10010110", "01010110", "11010110", "00110110", "10110110", "01110110", "11110110",
76
  "00001110", "10001110", "01001110", "11001110", "00101110", "10101110", "01101110", "11101110",
77
  "00011110", "10011110", "01011110", "11011110", "00111110", "10111110", "01111110", "11111110",
78
  "00000001", "10000001", "01000001", "11000001", "00100001", "10100001", "01100001", "11100001",
79
  "00010001", "10010001", "01010001", "11010001", "00110001", "10110001", "01110001", "11110001",
80
  "00001001", "10001001", "01001001", "11001001", "00101001", "10101001", "01101001", "11101001",
81
  "00011001", "10011001", "01011001", "11011001", "00111001", "10111001", "01111001", "11111001",
82
  "00000101", "10000101", "01000101", "11000101", "00100101", "10100101", "01100101", "11100101",
83
  "00010101", "10010101", "01010101", "11010101", "00110101", "10110101", "01110101", "11110101",
84
  "00001101", "10001101", "01001101", "11001101", "00101101", "10101101", "01101101", "11101101",
85
  "00011101", "10011101", "01011101", "11011101", "00111101", "10111101", "01111101", "11111101",
86
  "00000011", "10000011", "01000011", "11000011", "00100011", "10100011", "01100011", "11100011",
87
  "00010011", "10010011", "01010011", "11010011", "00110011", "10110011", "01110011", "11110011",
88
  "00001011", "10001011", "01001011", "11001011", "00101011", "10101011", "01101011", "11101011",
89
  "00011011", "10011011", "01011011", "11011011", "00111011", "10111011", "01111011", "11111011",
90
  "00000111", "10000111", "01000111", "11000111", "00100111", "10100111", "01100111", "11100111",
91
  "00010111", "10010111", "01010111", "11010111", "00110111", "10110111", "01110111", "11110111",
92
  "00001111", "10001111", "01001111", "11001111", "00101111", "10101111", "01101111", "11101111",
93
  "00011111", "10011111", "01011111", "11011111", "00111111", "10111111", "01111111", "11111111"
94
};
95
96
void BitDump(const char* tag, UINT32 level, const BYTE* buffer, UINT32 length, UINT32 flags)
97
0
{
98
0
  const char** strs = (flags & BITDUMP_MSB_FIRST) ? BYTE_BIT_STRINGS_MSB : BYTE_BIT_STRINGS_LSB;
99
0
  char pbuffer[64 * 8 + 1] = { 0 };
100
0
  size_t pos = 0;
101
102
0
  WINPR_ASSERT(tag);
103
0
  WINPR_ASSERT(buffer || (length == 0));
104
105
0
  DWORD i = 0;
106
0
  for (; i < length; i += 8)
107
0
  {
108
0
    const char* str = strs[buffer[i / 8]];
109
0
    const int nbits = (length - i) > 8 ? 8 : (length - i);
110
0
    const int rc = _snprintf(&pbuffer[pos], length - pos, "%.*s ", nbits, str);
111
0
    if (rc < 0)
112
0
      return;
113
114
0
    pos += (size_t)rc;
115
0
    if ((i % 64) == 0)
116
0
    {
117
0
      pos = 0;
118
0
      WLog_LVL(tag, level, "%s", pbuffer);
119
0
    }
120
0
  }
121
122
0
  if (i)
123
0
    WLog_LVL(tag, level, "%s ", pbuffer);
124
0
}
125
126
UINT32 ReverseBits32(UINT32 bits, UINT32 nbits)
127
0
{
128
0
  UINT32 rbits = 0;
129
130
0
  do
131
0
  {
132
0
    rbits = (rbits | (bits & 1)) << 1;
133
0
    bits >>= 1;
134
0
    nbits--;
135
0
  } while (nbits > 0);
136
137
0
  rbits >>= 1;
138
0
  return rbits;
139
0
}
140
141
void BitStream_Attach(wBitStream* bs, const BYTE* buffer, UINT32 capacity)
142
0
{
143
0
  union
144
0
  {
145
0
    const BYTE* cpv;
146
0
    BYTE* pv;
147
0
  } cnv;
148
149
0
  WINPR_ASSERT(bs);
150
0
  WINPR_ASSERT(buffer);
151
152
0
  cnv.cpv = buffer;
153
154
0
  bs->position = 0;
155
0
  bs->buffer = cnv.pv;
156
0
  bs->offset = 0;
157
0
  bs->accumulator = 0;
158
0
  bs->pointer = cnv.pv;
159
0
  bs->capacity = capacity;
160
0
  bs->length = bs->capacity * 8;
161
0
}
162
163
wBitStream* BitStream_New(void)
164
0
{
165
0
  wBitStream* bs = (wBitStream*)calloc(1, sizeof(wBitStream));
166
167
0
  return bs;
168
0
}
169
170
void BitStream_Free(wBitStream* bs)
171
0
{
172
0
  if (!bs)
173
0
    return;
174
175
0
  free(bs);
176
0
}