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
|
/**************************************************************************/
/* */
/* 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 "ChangeProperty.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 ChangePropertyStore::parseIdentity(Message *message, const unsigned char *buffer,
unsigned int size, int bigEndian) const
{
ChangePropertyMessage *changeProperty = (ChangePropertyMessage *) message;
changeProperty -> mode = *(buffer + 1);
changeProperty -> format = *(buffer + 16);
changeProperty -> window = GetULONG(buffer + 4, bigEndian);
changeProperty -> property = GetULONG(buffer + 8, bigEndian);
changeProperty -> type = GetULONG(buffer + 12, bigEndian);
changeProperty -> length = GetULONG(buffer + 20, bigEndian);
//
// Cleanup the padding bytes.
//
unsigned int uiFormat;
unsigned int uiLengthInBytes;
if ((int) size > CHANGEPROPERTY_DATA_OFFSET)
{
uiFormat = *(buffer + 16);
uiLengthInBytes = changeProperty -> length;
#ifdef DEBUG
*logofs << name() << ": length " << uiLengthInBytes
<< ", format " << uiFormat << ", size "
<< size << ".\n" << logofs_flush;
#endif
if (uiFormat == 16)
{
uiLengthInBytes <<= 1;
}
else if (uiFormat == 32)
{
uiLengthInBytes <<= 2;
}
unsigned char *end = ((unsigned char *) buffer) + size;
unsigned char *pad = ((unsigned char *) buffer) + CHANGEPROPERTY_DATA_OFFSET + uiLengthInBytes;
CleanData((unsigned char *) pad, end - pad);
}
#ifdef DEBUG
*logofs << name() << ": Parsed identity for message at "
<< message << ".\n" << logofs_flush;
#endif
return 1;
}
int ChangePropertyStore::unparseIdentity(const Message *message, unsigned char *buffer,
unsigned int size, int bigEndian) const
{
ChangePropertyMessage *changeProperty = (ChangePropertyMessage *) message;
*(buffer + 1) = changeProperty -> mode;
*(buffer + 16) = changeProperty -> format;
PutULONG(changeProperty -> window, buffer + 4, bigEndian);
PutULONG(changeProperty -> property, buffer + 8, bigEndian);
PutULONG(changeProperty -> type, buffer + 12, bigEndian);
PutULONG(changeProperty -> length, buffer + 20, bigEndian);
#ifdef DEBUG
*logofs << name() << ": Unparsed identity for message at "
<< this << ".\n" << logofs_flush;
#endif
return 1;
}
void ChangePropertyStore::dumpIdentity(const Message *message) const
{
#ifdef DUMP
ChangePropertyMessage *changeProperty = (ChangePropertyMessage *) message;
*logofs << name() << ": Identity mode " << (unsigned int) changeProperty -> mode << ", format "
<< (unsigned int) changeProperty -> format << ", window " << changeProperty -> window
<< ", property " << changeProperty -> property << ", type " << changeProperty -> type
<< ", length " << changeProperty -> length << ", size " << changeProperty -> size_
<< ".\n" << logofs_flush;
#endif
}
void ChangePropertyStore::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 + 16, 1);
md5_append(md5_state_, buffer + 8, 4);
md5_append(md5_state_, buffer + 12, 4);
md5_append(md5_state_, buffer + 20, 4);
}
void ChangePropertyStore::updateIdentity(EncodeBuffer &encodeBuffer, const Message *message,
const Message *cachedMessage,
ChannelCache *channelCache) const
{
ChangePropertyMessage *changeProperty = (ChangePropertyMessage *) message;
ChangePropertyMessage *cachedChangeProperty = (ChangePropertyMessage *) cachedMessage;
ClientCache *clientCache = (ClientCache *) channelCache;
#ifdef TEST
*logofs << name() << ": Encoding value " << changeProperty -> window
<< " as window field.\n" << logofs_flush;
#endif
encodeBuffer.encodeXidValue(changeProperty -> window, clientCache -> windowCache);
cachedChangeProperty -> window = changeProperty -> window;
}
void ChangePropertyStore::updateIdentity(DecodeBuffer &decodeBuffer, const Message *message,
ChannelCache *channelCache) const
{
ChangePropertyMessage *changeProperty = (ChangePropertyMessage *) message;
ClientCache *clientCache = (ClientCache *) channelCache;
unsigned int value;
decodeBuffer.decodeXidValue(value, clientCache -> windowCache);
changeProperty -> window = value;
#ifdef DEBUG
*logofs << name() << ": Decoded value " << changeProperty -> window
<< " as window field.\n" << logofs_flush;
#endif
}
|
