1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
|
// --- BEGIN COPYRIGHT BLOCK ---
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation;
// version 2.1 of the License.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor,
// Boston, MA 02110-1301 USA
//
// Copyright (C) 2007 Red Hat, Inc.
// All rights reserved.
// --- END COPYRIGHT BLOCK ---
#include <memory.h>
#include <assert.h>
#include <stdio.h>
#include "main/Buffer.h"
#include "main/Memory.h"
#ifdef XP_WIN32
#define TPS_PUBLIC __declspec(dllexport)
#else /* !XP_WIN32 */
#define TPS_PUBLIC
#endif /* !XP_WIN32 */
TPS_PUBLIC Buffer::Buffer(const BYTE *buf_, unsigned int len_) : len(len_), res(len_)
{
buf = new BYTE[len];
memcpy(buf, buf_, len);
}
TPS_PUBLIC Buffer::Buffer(const Buffer& cpy)
{
buf = 0;
*this = cpy;
}
TPS_PUBLIC Buffer::Buffer(unsigned int len_) : len(len_), res(len_)
{
buf = new BYTE[res];
memset(buf, 0, len_);
}
TPS_PUBLIC Buffer::Buffer(unsigned int len_, BYTE b) : len(len_), res(len_)
{
if (len_ == 0) {
buf = NULL;
} else {
buf = new BYTE[res];
memset(buf, b, len);
}
}
TPS_PUBLIC Buffer::~Buffer()
{
if( buf != NULL ) {
delete [] buf;
buf = NULL;
}
}
TPS_PUBLIC bool
Buffer::operator==(const Buffer& cmp) const
{
if( len != cmp.len ) return false;
for( unsigned int i=0; i < len; ++i ) {
if( buf[i] != cmp.buf[i] ) {
return false;
}
}
return true;
}
TPS_PUBLIC Buffer&
Buffer::operator=(const Buffer& cpy)
{
if( this == &cpy ) return *this;
len = cpy.len;
if( buf != NULL ) {
delete [] buf;
buf = NULL;
}
if (cpy.len == 0) {
buf = NULL;
} else {
buf = new BYTE[len];
memcpy(buf, cpy.buf, len);
}
res = len;
return *this;
}
TPS_PUBLIC void
Buffer::zeroize()
{
if( len > 0 ) {
memset( buf, 0, len );
}
}
TPS_PUBLIC Buffer
Buffer::operator+(const Buffer& addend) const
{
Buffer result(len + addend.len);
memcpy(result.buf, buf, len);
memcpy(result.buf+len, addend.buf, addend.len);
return result;
}
TPS_PUBLIC Buffer&
Buffer::operator+=(const Buffer& addend)
{
unsigned int oldLen = len;
resize(len + addend.len);
memcpy(buf+oldLen, addend.buf, addend.len);
return *this;
}
TPS_PUBLIC Buffer&
Buffer::operator+=(BYTE b)
{
resize(len+1);
buf[len-1] = b;
return *this;
}
TPS_PUBLIC void
Buffer::reserve(unsigned int n)
{
if( n > res ) {
BYTE *newBuf = new BYTE[n];
memcpy(newBuf, buf, len);
if( buf != NULL ) {
delete [] buf;
buf = NULL;
}
buf = newBuf;
res = n;
}
}
TPS_PUBLIC void
Buffer::resize(unsigned int newLen)
{
if( newLen == len ) {
return;
} else if( newLen < len ) {
len = newLen;
} else if( newLen <= res ) {
assert( newLen > len );
memset(buf+len, 0, newLen-len);
len = newLen;
} else {
assert( newLen > len && newLen > res );
BYTE *newBuf = new BYTE[newLen];
memcpy(newBuf, buf, len);
memset(newBuf+len, 0, newLen-len);
if( buf != NULL ) {
delete [] buf;
buf = NULL;
}
buf = newBuf;
len = newLen;
res = newLen;
}
}
TPS_PUBLIC Buffer
Buffer::substr(unsigned int i, unsigned int n) const
{
assert( i < len && (i+n) <= len );
return Buffer( buf+i, n );
}
TPS_PUBLIC void
Buffer::replace(unsigned int i, const BYTE* cpy, unsigned int n)
{
if (len > i+n) {
resize( len);
}else {
resize( i+n );
}
memcpy(buf+i, cpy, n);
}
TPS_PUBLIC void
Buffer::dump() const
{
unsigned int i;
for( i=0; i < len; ++i ) {
printf("%02x ", buf[i]);
if( i % 16 == 15 ) printf("\n");
}
printf("\n");
}
/*
* if caller knows it's a string, pad with ending 0 and return.
* note:
* It is the caller's responsibility to make sure it's a string.
* Memory needs to be released by the caller.
*/
TPS_PUBLIC char *
Buffer::string()
{
unsigned int i;
char *s = (char *) PR_Malloc(len+1);
for (i = 0; i < len; i++) {
s[i] = buf[i];
}
s[i] = '\0';
return s;
}
TPS_PUBLIC unsigned char*
Buffer::getBuf() {
return (unsigned char *) buf;
}
TPS_PUBLIC unsigned int
Buffer::getLen() {
return len;
}
TPS_PUBLIC char *
Buffer::toHex()
{
unsigned int i;
char *hx = (char *)PR_Malloc(1024);
if (hx == NULL)
return NULL;
for( i=0; i < len; ++i ) {
PR_snprintf(hx+(i*2),1024-(i*2),"%02x", (unsigned char)buf[i]);
}
return hx;
}
static const char hextbl[] = {
'0', '1', '2', '3', '4', '5', '6', '7',
'8', '9', 'A', 'B', 'C', 'D', 'E', 'F'
};
|
