|
0
|
1 package treeVnc;
|
|
|
2 //
|
|
|
3 // Copyright (C) 2002 Constantin Kaplinsky. All Rights Reserved.
|
|
|
4 //
|
|
|
5 // This is free software; you can redistribute it and/or modify
|
|
|
6 // it under the terms of the GNU General Public License as published by
|
|
|
7 // the Free Software Foundation; either version 2 of the License, or
|
|
|
8 // (at your option) any later version.
|
|
|
9 //
|
|
|
10 // This software is distributed in the hope that it will be useful,
|
|
|
11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
|
13 // GNU General Public License for more details.
|
|
|
14 //
|
|
|
15 // You should have received a copy of the GNU General Public License
|
|
|
16 // along with this software; if not, write to the Free Software
|
|
|
17 // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
|
|
|
18 // USA.
|
|
|
19 //
|
|
|
20
|
|
|
21 //
|
|
|
22 // SessionRecorder is a class to write FBS (FrameBuffer Stream) files.
|
|
|
23 // FBS files are used to save RFB sessions for later playback.
|
|
|
24 //
|
|
|
25
|
|
|
26 import java.io.*;
|
|
|
27
|
|
|
28 class SessionRecorder {
|
|
|
29
|
|
|
30 protected FileOutputStream f;
|
|
|
31 protected DataOutputStream df;
|
|
|
32 protected long startTime, lastTimeOffset;
|
|
|
33
|
|
|
34 protected byte[] buffer;
|
|
|
35 protected int bufferSize;
|
|
|
36 protected int bufferBytes;
|
|
|
37
|
|
|
38 public SessionRecorder(String name, int bufsize) throws IOException {
|
|
|
39 f = new FileOutputStream(name);
|
|
|
40 df = new DataOutputStream(f);
|
|
|
41 startTime = System.currentTimeMillis();
|
|
|
42 lastTimeOffset = 0;
|
|
|
43
|
|
|
44 bufferSize = bufsize;
|
|
|
45 bufferBytes = 0;
|
|
|
46 buffer = new byte[bufferSize];
|
|
|
47 }
|
|
|
48
|
|
|
49 public SessionRecorder(String name) throws IOException {
|
|
|
50 this(name, 65536);
|
|
|
51 }
|
|
|
52
|
|
|
53 //
|
|
|
54 // Close the file, free resources.
|
|
|
55 //
|
|
|
56
|
|
|
57 public void close() throws IOException {
|
|
|
58 try {
|
|
|
59 flush();
|
|
|
60 } catch (IOException e) {
|
|
|
61 }
|
|
|
62
|
|
|
63 df = null;
|
|
|
64 f.close();
|
|
|
65 f = null;
|
|
|
66 buffer = null;
|
|
|
67 }
|
|
|
68
|
|
|
69 //
|
|
|
70 // Write the FBS file header as defined in the rfbproxy utility.
|
|
|
71 //
|
|
|
72
|
|
|
73 public void writeHeader() throws IOException {
|
|
|
74 df.write("FBS 001.000\n".getBytes());
|
|
|
75 }
|
|
|
76
|
|
|
77 //
|
|
|
78 // Write one byte.
|
|
|
79 //
|
|
|
80
|
|
|
81 public void writeByte(int b) throws IOException {
|
|
|
82 prepareWriting();
|
|
|
83 buffer[bufferBytes++] = (byte)b;
|
|
|
84 }
|
|
|
85
|
|
|
86 //
|
|
|
87 // Write 16-bit value, big-endian.
|
|
|
88 //
|
|
|
89
|
|
|
90 public void writeShortBE(int v) throws IOException {
|
|
|
91 prepareWriting();
|
|
|
92 buffer[bufferBytes++] = (byte)(v >> 8);
|
|
|
93 buffer[bufferBytes++] = (byte)v;
|
|
|
94 }
|
|
|
95
|
|
|
96 //
|
|
|
97 // Write 32-bit value, big-endian.
|
|
|
98 //
|
|
|
99
|
|
|
100 public void writeIntBE(int v) throws IOException {
|
|
|
101 prepareWriting();
|
|
|
102 buffer[bufferBytes] = (byte)(v >> 24);
|
|
|
103 buffer[bufferBytes + 1] = (byte)(v >> 16);
|
|
|
104 buffer[bufferBytes + 2] = (byte)(v >> 8);
|
|
|
105 buffer[bufferBytes + 3] = (byte)v;
|
|
|
106 bufferBytes += 4;
|
|
|
107 }
|
|
|
108
|
|
|
109 //
|
|
|
110 // Write 16-bit value, little-endian.
|
|
|
111 //
|
|
|
112
|
|
|
113 public void writeShortLE(int v) throws IOException {
|
|
|
114 prepareWriting();
|
|
|
115 buffer[bufferBytes++] = (byte)v;
|
|
|
116 buffer[bufferBytes++] = (byte)(v >> 8);
|
|
|
117 }
|
|
|
118
|
|
|
119 //
|
|
|
120 // Write 32-bit value, little-endian.
|
|
|
121 //
|
|
|
122
|
|
|
123 public void writeIntLE(int v) throws IOException {
|
|
|
124 prepareWriting();
|
|
|
125 buffer[bufferBytes] = (byte)v;
|
|
|
126 buffer[bufferBytes + 1] = (byte)(v >> 8);
|
|
|
127 buffer[bufferBytes + 2] = (byte)(v >> 16);
|
|
|
128 buffer[bufferBytes + 3] = (byte)(v >> 24);
|
|
|
129 bufferBytes += 4;
|
|
|
130 }
|
|
|
131
|
|
|
132 //
|
|
|
133 // Write byte arrays.
|
|
|
134 //
|
|
|
135
|
|
|
136 public void write(byte b[], int off, int len) throws IOException {
|
|
|
137 prepareWriting();
|
|
|
138 while (len > 0) {
|
|
|
139 if (bufferBytes > bufferSize - 4)
|
|
|
140 flush(false);
|
|
|
141
|
|
|
142 int partLen;
|
|
|
143 if (bufferBytes + len > bufferSize) {
|
|
|
144 partLen = bufferSize - bufferBytes;
|
|
|
145 } else {
|
|
|
146 partLen = len;
|
|
|
147 }
|
|
|
148 System.arraycopy(b, off, buffer, bufferBytes, partLen);
|
|
|
149 bufferBytes += partLen;
|
|
|
150 off += partLen;
|
|
|
151 len -= partLen;
|
|
|
152 }
|
|
|
153 }
|
|
|
154
|
|
|
155 public void write(byte b[]) throws IOException {
|
|
|
156 write(b, 0, b.length);
|
|
|
157 }
|
|
|
158
|
|
|
159 //
|
|
|
160 // Flush the output. This method saves buffered data in the
|
|
|
161 // underlying file object adding data sizes and timestamps. If the
|
|
|
162 // updateTimeOffset is set to false, then the current time offset
|
|
|
163 // will not be changed for next write operation.
|
|
|
164 //
|
|
|
165
|
|
|
166 public void flush(boolean updateTimeOffset) throws IOException {
|
|
|
167 if (bufferBytes > 0) {
|
|
|
168 df.writeInt(bufferBytes);
|
|
|
169 df.write(buffer, 0, (bufferBytes + 3) & 0x7FFFFFFC);
|
|
|
170 df.writeInt((int)lastTimeOffset);
|
|
|
171 bufferBytes = 0;
|
|
|
172 if (updateTimeOffset)
|
|
|
173 lastTimeOffset = -1;
|
|
|
174 }
|
|
|
175 }
|
|
|
176
|
|
|
177 public void flush() throws IOException {
|
|
|
178 flush(true);
|
|
|
179 }
|
|
|
180
|
|
|
181 //
|
|
|
182 // Before writing any data, remember time offset and flush the
|
|
|
183 // buffer before it becomes full.
|
|
|
184 //
|
|
|
185
|
|
|
186 protected void prepareWriting() throws IOException {
|
|
|
187 if (lastTimeOffset == -1)
|
|
|
188 lastTimeOffset = System.currentTimeMillis() - startTime;
|
|
|
189 if (bufferBytes > bufferSize - 4)
|
|
|
190 flush(false);
|
|
|
191 }
|
|
|
192
|
|
|
193 }
|
|
|
194
|
