aboutsummaryrefslogtreecommitdiff
path: root/nxcomp/src/InternAtom.cpp
blob: e83d2b9f85a677345ada651f2163952a31e29065 (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
/**************************************************************************/
/*                                                                        */
/* Copyright (c) 2001, 2011 NoMachine (http://www.nomachine.com)          */
/* Copyright (c) 2008-2014 Oleksandr Shneyder <o.shneyder@phoca-gmbh.de>  */
/* Copyright (c) 2014-2016 Ulrich Sibiller <uli42@gmx.de>                 */
/* Copyright (c) 2014-2016 Mihai Moldovan <ionic@ionic.de>                */
/* Copyright (c) 2011-2016 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 "InternAtom.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 InternAtomStore::parseIdentity(Message *message, const unsigned char *buffer,
                                       unsigned int size, int bigEndian) const
{
  InternAtomMessage *internAtom = (InternAtomMessage *) message;

  //
  // Here is the fingerprint.
  //

  internAtom -> only_if_exists = *(buffer + 1);
  internAtom -> name_length    = GetUINT(buffer + 4, bigEndian);

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

  //
  // Clean up padding bytes.
  //

  if ((int) size > dataOffset)
  {
    unsigned char *end = ((unsigned char *) buffer) + size;

    for (unsigned char *pad = ((unsigned char *) buffer) + 8 +
                                  internAtom -> name_length; pad < end; pad++)
    {
      *pad = 0;
    }
  }

  return 1;
}

int InternAtomStore::unparseIdentity(const Message *message, unsigned char *buffer,
                                         unsigned int size, int bigEndian) const
{
  InternAtomMessage *internAtom = (InternAtomMessage *) message;

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

  *(buffer + 1) = internAtom -> only_if_exists;

  PutUINT(internAtom -> name_length, buffer + 4, bigEndian);

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

  return 1;
}

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

  InternAtomMessage *internAtom = (InternAtomMessage *) message;

  *logofs << name() << ": Identity only_if_exists "
          << (unsigned int) internAtom -> only_if_exists
          << ", name_length " << internAtom -> name_length
          << ", name '";

          for (int i = 0; i < internAtom -> name_length; i++)
          {
            *logofs << internAtom -> data_[i];
          }

          *logofs << "'.\n" << logofs_flush;

  #endif
}

void InternAtomStore::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 + 4, 2);
}