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
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
|
/**************************************************************************/
/* */
/* 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 "PolyText8.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 PolyText8Store::parseIdentity(Message *message, const unsigned char *buffer,
unsigned int size, int bigEndian) const
{
PolyText8Message *polyText8 = (PolyText8Message *) message;
//
// Here is the fingerprint.
//
polyText8 -> drawable = GetULONG(buffer + 4, bigEndian);
polyText8 -> gcontext = GetULONG(buffer + 8, bigEndian);
polyText8 -> x = GetUINT(buffer + 12, bigEndian);
polyText8 -> y = GetUINT(buffer + 14, bigEndian);
//
// Clean up padding bytes.
//
#ifdef DUMP
DumpData(buffer, size);
*logofs << "\n\n" << logofs_flush;
#endif
if ((int) size > dataOffset)
{
int length;
int current;
int delta;
int item;
unsigned int nitem;
unsigned char *pad = NULL;
unsigned char *end = NULL;
delta = 1;
nitem = 0;
#ifdef DUMP
*logofs << name() << " Size " << size << ".\n" << logofs_flush;
#endif
//
// Data is a list of TextItem where element
// can be a string or a font shift.
//
current = POLYTEXT8_DATA_OFFSET;
length = POLYTEXT8_DATA_OFFSET;
do
{
#ifdef DUMP
*logofs << name() << " Current " << current << ".\n" << logofs_flush;
#endif
item = GetUINT(buffer + length , bigEndian);
if (item < 255)
{
//
// Text element. Number represents
// the 'Length of string' field.
//
length += (item + delta + 1);
nitem++;
}
else if (item == 255)
{
//
// Element is a font shift.
//
length += 5;
nitem++;
}
#ifdef DUMP
*logofs << name() << " Item " << item << ".\n" << logofs_flush;
#endif
current += length;
}
while(current < (int) size && item != 0);
#ifdef DUMP
*logofs << name() << " Final length " << length << ".\n" << logofs_flush;
#endif
end = ((unsigned char *) buffer) + size;
pad = ((unsigned char *) buffer) + length;
for (; pad < end && nitem >= 1; pad++)
{
#ifdef DUMP
*logofs << name() << " Padding " << " .\n" << logofs_flush;
#endif
*pad = 0;
}
}
#ifdef DEBUG
*logofs << name() << ": Parsed Identity for message at " << this << ".\n" << logofs_flush;
#endif
return 1;
}
int PolyText8Store::unparseIdentity(const Message *message, unsigned char *buffer,
unsigned int size, int bigEndian) const
{
PolyText8Message *polyText8 = (PolyText8Message *) message;
//
// Fill all the message's fields.
//
PutULONG(polyText8 -> drawable, buffer + 4, bigEndian);
PutULONG(polyText8 -> gcontext, buffer + 8, bigEndian);
PutUINT(polyText8 -> x, buffer + 12, bigEndian);
PutUINT(polyText8 -> y, buffer + 14, bigEndian);
#ifdef DEBUG
*logofs << name() << ": Unparsed identity for message at " << this << ".\n" << logofs_flush;
#endif
return 1;
}
void PolyText8Store::dumpIdentity(const Message *message) const
{
#ifdef DUMP
PolyText8Message *polyText8 = (PolyText8Message *) message;
*logofs << name() << ": Identity drawable " << polyText8 -> drawable
<< ", gcontext " << polyText8 -> gcontext << ", x " << polyText8 -> x
<< ", y " << polyText8 -> y << ", size " << polyText8 -> size_
<< ".\n";
#endif
}
void PolyText8Store::identityChecksum(const Message *message, const unsigned char *buffer,
unsigned int size, int bigEndian) const
{
}
void PolyText8Store::updateIdentity(EncodeBuffer &encodeBuffer, const Message *message,
const Message *cachedMessage,
ChannelCache *channelCache) const
{
PolyText8Message *polyText8 = (PolyText8Message *) message;
PolyText8Message *cachedPolyText8 = (PolyText8Message *) cachedMessage;
ClientCache *clientCache = (ClientCache *) channelCache;
#ifdef TEST
*logofs << name() << ": Encoding value " << polyText8 -> drawable
<< " as " << "drawable" << " field.\n" << logofs_flush;
#endif
encodeBuffer.encodeXidValue(polyText8 -> drawable, clientCache -> drawableCache);
cachedPolyText8 -> drawable = polyText8 -> drawable;
#ifdef TEST
*logofs << name() << ": Encoding value " << polyText8 -> gcontext
<< " as " << "gcontext" << " field.\n" << logofs_flush;
#endif
encodeBuffer.encodeXidValue(polyText8 -> gcontext, clientCache -> gcCache);
cachedPolyText8 -> gcontext = polyText8 -> gcontext;
#ifdef TEST
*logofs << name() << ": Encoding value " << polyText8 -> x
<< " as " << "x" << " field.\n" << logofs_flush;
#endif
unsigned short int diff_x = polyText8 -> x - cachedPolyText8 -> x;
encodeBuffer.encodeCachedValue(diff_x, 16,
clientCache -> polyTextCacheX);
cachedPolyText8 -> x = polyText8 -> x;
#ifdef TEST
*logofs << name() << ": Encoding value " << polyText8 -> y
<< " as " << "y" << " field.\n" << logofs_flush;
#endif
unsigned short int diff_y = polyText8 -> y - cachedPolyText8 -> y;
encodeBuffer.encodeCachedValue(diff_y, 16,
clientCache -> polyTextCacheY);
cachedPolyText8 -> y = polyText8 -> y;
}
void PolyText8Store::updateIdentity(DecodeBuffer &decodeBuffer, const Message *message,
ChannelCache *channelCache) const
{
PolyText8Message *polyText8 = (PolyText8Message *) message;
ClientCache *clientCache = (ClientCache *) channelCache;
unsigned int value;
decodeBuffer.decodeXidValue(value, clientCache -> drawableCache);
polyText8 -> drawable = value;
#ifdef DEBUG
*logofs << name() << ": Decoded value " << polyText8 -> drawable
<< " as " << "drawable" << " field.\n" << logofs_flush;
#endif
decodeBuffer.decodeXidValue(value, clientCache -> gcCache);
polyText8 -> gcontext = value;
#ifdef DEBUG
*logofs << name() << ": Decoded value " << polyText8 -> gcontext
<< " as gcontext field.\n" << logofs_flush;
#endif
decodeBuffer.decodeCachedValue(value, 16,
clientCache -> polyTextCacheX);
polyText8 -> x += value;
polyText8 -> x &= 0xffff;
#ifdef DEBUG
*logofs << name() << ": Decoded value " << polyText8 -> x
<< " as x field.\n" << logofs_flush;
#endif
decodeBuffer.decodeCachedValue(value, 16,
clientCache -> polyTextCacheY);
polyText8 -> y += value;
polyText8 -> y &= 0xffff;
#ifdef DEBUG
*logofs << name() << ": Decoded value " << polyText8 -> y
<< " as y field.\n" << logofs_flush;
#endif
}
|
