aboutsummaryrefslogtreecommitdiff
path: root/nxcomp/Types.h
blob: b7506124eecde2f9228b2de01b04f977f7eca8cb (plain)
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
254
255
256
257
258
259
260
261
262
263
/**************************************************************************/
/*                                                                        */
/* Copyright (c) 2001, 2010 NoMachine, http://www.nomachine.com/.         */
/*                                                                        */
/* NXCOMP, NX protocol compression and NX extensions to this software     */
/* are copyright of NoMachine. Redistribution and use of the present      */
/* software is allowed according to terms specified in the file LICENSE   */
/* which comes in the source distribution.                                */
/*                                                                        */
/* Check http://www.nomachine.com/licensing.html for applicability.       */
/*                                                                        */
/* NX and NoMachine are trademarks of Medialogic S.p.A.                   */
/*                                                                        */
/* All rights reserved.                                                   */
/*                                                                        */
/**************************************************************************/

#ifndef Types_H
#define Types_H

using namespace std;

#include <vector>
#include <list>
#include <map>
#include <set>

#include "MD5.h"

//
// This is MD5 length.
//

#define MD5_LENGTH          16

//
// Types of repositories. Replace the original 
// clear() methods from STL in order to actually 
// free the unused memory.
//

class Message;

class T_data : public vector < unsigned char >
{
  public:

  unsigned char *begin()
  {
    return &*(vector < unsigned char >::begin());
  }

  const unsigned char *begin() const
  {
    return &*(vector < unsigned char >::begin());
  }

  // Avoid overriding clear() when using libc++. Fiddling with STL internals
  // doesn't really seem like a good idea to me anyway.
  #ifndef _LIBCPP_VECTOR
  void clear()
  {
    #if defined(__STL_USE_STD_ALLOCATORS) || defined(__GLIBCPP_INTERNAL_VECTOR_H)

    #if defined(__GLIBCPP_INTERNAL_VECTOR_H)

    _Destroy(_M_start, _M_finish);

    #else /* #if defined(__GLIBCPP_INTERNAL_VECTOR_H) */

    destroy(_M_start, _M_finish);

    #endif /* #if defined(__GLIBCPP_INTERNAL_VECTOR_H) */

    _M_deallocate(_M_start, _M_end_of_storage - _M_start);

    _M_start = _M_finish = _M_end_of_storage = 0;

    #else /* #if defined(__STL_USE_STD_ALLOCATORS) || defined(__GLIBCPP_INTERNAL_VECTOR_H) */

    #if defined(_GLIBCXX_VECTOR)

    _Destroy(this->_M_impl._M_start, this->_M_impl._M_finish);

    _M_deallocate(this->_M_impl._M_start, this->_M_impl._M_end_of_storage - this->_M_impl._M_start);

    this->_M_impl._M_start = this->_M_impl._M_finish = this->_M_impl._M_end_of_storage = 0;

    #else /* #if defined(_GLIBCXX_VECTOR) */

    destroy(start, finish);

    deallocate();

    start = finish = end_of_storage = 0;

    #endif /* #if defined(_GLIBCXX_VECTOR) */

    #endif  /* #if defined(__STL_USE_STD_ALLOCATORS) || defined(__GLIBCPP_INTERNAL_VECTOR_H) */
  }
  #endif /* #ifdef _LIBCPP_VECTOR */
};

class T_messages : public vector < Message * >
{
  public:

  // Avoid overriding clear() when using libc++. Fiddling with STL internals
  // doesn't really seem like a good idea to me anyway.
  #ifndef _LIBCPP_VECTOR
  void clear()
  {
    #if defined(__STL_USE_STD_ALLOCATORS) || defined(__GLIBCPP_INTERNAL_VECTOR_H)

    #if defined(__GLIBCPP_INTERNAL_VECTOR_H)

    _Destroy(_M_start, _M_finish);

    #else /* #if defined(__GLIBCPP_INTERNAL_VECTOR_H) */

    destroy(_M_start, _M_finish);

    #endif /* #if defined(__GLIBCPP_INTERNAL_VECTOR_H) */

    _M_deallocate(_M_start, _M_end_of_storage - _M_start);

    _M_start = _M_finish = _M_end_of_storage = 0;

    #else /* #if defined(__STL_USE_STD_ALLOCATORS) || defined(__GLIBCPP_INTERNAL_VECTOR_H) */

    #if defined(_GLIBCXX_VECTOR)

    _Destroy(this->_M_impl._M_start, this->_M_impl._M_finish);

    _M_deallocate(this->_M_impl._M_start, this->_M_impl._M_end_of_storage - this->_M_impl._M_start);

    this->_M_impl._M_start = this->_M_impl._M_finish = this->_M_impl._M_end_of_storage = 0;

    #else /* #if defined(_GLIBCXX_VECTOR) */

    destroy(start, finish);

    deallocate();

    start = finish = end_of_storage = 0;

    #endif /* #if defined(_GLIBCXX_VECTOR) */

    #endif /* #if defined(__STL_USE_STD_ALLOCATORS) || defined(__GLIBCPP_INTERNAL_VECTOR_H) */
  }
  #endif /* #ifndef _LIBCPP_VECTOR */
};

typedef md5_byte_t * T_checksum;

struct T_less
{
  bool operator()(T_checksum a, T_checksum b) const
  {
    return (memcmp(a, b, MD5_LENGTH) < 0);
  }
};

typedef map < T_checksum, int, T_less > T_checksums;

class Split;

typedef list < Split * > T_splits;

class File;

struct T_older
{
  bool operator()(File *a, File *b) const;
};

typedef set < File *, T_older > T_files;

typedef list < int > T_list;

//
// Used to accommodate data to be read and
// written to a socket.
//

typedef struct
{
  T_data data_;
  int    length_;
  int    start_;
}
T_buffer;

//
// The message store operation that was
// executed for the message. The channels
// use these values to determine how to
// handle the message after it has been
// received at the decoding side.
//

enum T_store_action
{
  is_hit,
  is_added,
  is_discarded,
  is_removed,
  is_added_compat = 0,
  is_hit_compat = 1
};

#define IS_HIT   (control -> isProtoStep8() == 1 ? is_hit   : is_hit_compat)
#define IS_ADDED (control -> isProtoStep8() == 1 ? is_added : is_added_compat)

enum T_checksum_action
{
  use_checksum,
  discard_checksum
};

enum T_data_action
{
  use_data,
  discard_data
};

//
// Message is going to be weighted for
// deletion at insert or cleanup time?
//

enum T_rating
{
  rating_for_insert,
  rating_for_clean
};

//
// How to handle the writes to the X
// and proxy connections.
//

enum T_write
{
  write_immediate,
  write_delayed
};

enum T_flush
{
  flush_if_needed,
  flush_if_any
};

//
// This is the value to indicate an
// invalid position in the message
// store.
//

static const int nothing = -1;

#endif /* Types_H */