aboutsummaryrefslogtreecommitdiff
path: root/nxcomp/src/GetImage.cpp
blob: fcee8fce382764b418bc8d67691d6b9cc054aeb1 (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
/**************************************************************************/
/*                                                                        */
/* Copyright (c) 2001, 2011 NoMachine (http://www.nomachine.com)          */
/* Copyright (c) 2008-2017 Oleksandr Shneyder <o.shneyder@phoca-gmbh.de>  */
/* Copyright (c) 2014-2022 Ulrich Sibiller <uli42@gmx.de>                 */
/* Copyright (c) 2014-2019 Mihai Moldovan <ionic@ionic.de>                */
/* Copyright (c) 2011-2022 Mike Gabriel <mike.gabriel@das-netzwerkteam.de>*/
/* Copyright (c) 2015-2016 Qindel Group (http://www.qindel.com)           */
/*                                                                        */
/* NXCOMP, NX protocol compression and NX extensions to this software     */
/* are copyright of the aforementioned persons and companies.             */
/*                                                                        */
/* Redistribution and use of the present software is allowed according    */
/* to terms specified in the file LICENSE.nxcomp which comes in the       */
/* source distribution.                                                   */
/*                                                                        */
/* All rights reserved.                                                   */
/*                                                                        */
/* NOTE: This software has received contributions from various other      */
/* contributors, only the core maintainers and supporters are listed as   */
/* copyright holders. Please contact us, if you feel you should be listed */
/* as copyright holder, as well.                                          */
/*                                                                        */
/**************************************************************************/

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include "GetImage.h"

#include "ClientCache.h"

#include "EncodeBuffer.h"
#include "DecodeBuffer.h"

//
// Set the verbosity level.
//

#define PANIC
#define WARNING
#undef  TEST
#undef  DEBUG
#undef  DUMP

//
// Here are the methods to handle messages' content.
//

int GetImageStore::parseIdentity(Message *message, const unsigned char *buffer,
                                     unsigned int size, int bigEndian) const
{
  GetImageMessage *getImage = (GetImageMessage *) message;

  //
  // Here is the fingerprint.
  //

  getImage -> format = *(buffer + 1);

  #ifdef TEST
  if (getImage -> format != 1 && getImage -> format != 2)
  {
    *logofs << name() << ": WARNING! Dirty value " << getImage -> format
            << " for field format.\n" << logofs_flush;
  }
  #endif

  getImage -> drawable = GetULONG(buffer + 4, bigEndian);

  getImage -> x      = GetUINT(buffer + 8, bigEndian);
  getImage -> y      = GetUINT(buffer + 10, bigEndian);
  getImage -> width  = GetUINT(buffer + 12, bigEndian);
  getImage -> height = GetUINT(buffer + 14, bigEndian);

  getImage -> plane_mask = GetULONG(buffer + 16, bigEndian);

  #ifdef DEBUG
  *logofs << name() << ": Parsed Identity for message at " << this << ".\n" << logofs_flush;
  #endif

  return 1;
}

int GetImageStore::unparseIdentity(const Message *message, unsigned char *buffer,
                                       unsigned int size, int bigEndian) const
{
  GetImageMessage *getImage = (GetImageMessage *) message;

  //
  // Fill all the message's fields.
  //

  *(buffer + 1) = getImage -> format;

  PutULONG(getImage -> drawable, buffer + 4,  bigEndian);

  PutUINT(getImage -> x,      buffer + 8,  bigEndian);
  PutUINT(getImage -> y,      buffer + 10, bigEndian);
  PutUINT(getImage -> width,  buffer + 12, bigEndian);
  PutUINT(getImage -> height, buffer + 14, bigEndian);

  PutULONG(getImage -> plane_mask, buffer + 16,  bigEndian);

  #ifdef DEBUG
  *logofs << name() << ": Unparsed identity for message at " << this << ".\n" << logofs_flush;
  #endif

  return 1;
}

void GetImageStore::dumpIdentity(const Message *message) const
{
  #ifdef DUMP

  GetImageMessage *getImage = (GetImageMessage *) message;

  *logofs << name() << ": Identity format " << (unsigned) getImage -> format
          << ", drawable " << getImage -> drawable << ", x " << getImage -> x
          << ", y " << getImage -> y << ", width " << getImage -> width
          << ", height " << getImage -> height << ", plane_mask "
          << getImage -> plane_mask << ", size " << getImage -> size_
          << ".\n" << logofs_flush;

  #endif
}

void GetImageStore::identityChecksum(const Message *message, const unsigned char *buffer,
                                         unsigned int size, int bigEndian) const
{
  md5_append(md5_state_, buffer + 1,  1);
  md5_append(md5_state_, buffer + 8,  2);
  md5_append(md5_state_, buffer + 10, 2);
  md5_append(md5_state_, buffer + 12, 2);
  md5_append(md5_state_, buffer + 14, 2);
  md5_append(md5_state_, buffer + 16, 4);
}

void GetImageStore::updateIdentity(EncodeBuffer &encodeBuffer, const Message *message,
                                       const Message *cachedMessage,
                                           ChannelCache *channelCache) const
{
  GetImageMessage *getImage       = (GetImageMessage *) message;
  GetImageMessage *cachedGetImage = (GetImageMessage *) cachedMessage;

  ClientCache *clientCache = (ClientCache *) channelCache;

  #ifdef TEST
  *logofs << name() << ": Encoding value " << getImage -> drawable
          << " as drawable field.\n" << logofs_flush;
  #endif

  encodeBuffer.encodeXidValue(getImage -> drawable, clientCache -> drawableCache);

  cachedGetImage -> drawable = getImage -> drawable;
}

void GetImageStore::updateIdentity(DecodeBuffer &decodeBuffer, const Message *message,
                                       ChannelCache *channelCache) const
{
  GetImageMessage *getImage = (GetImageMessage *) message;

  ClientCache *clientCache = (ClientCache *) channelCache;

  unsigned int value;

  decodeBuffer.decodeXidValue(value, clientCache -> drawableCache);

  getImage -> drawable = value;

  #ifdef DEBUG
  *logofs << name() << ": Decoded value " << getImage -> drawable
          << " as drawable field.\n" << logofs_flush;
  #endif
}