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1
20 package org.apache.mina.filter.codec.serialization;
21
22 import java.io.DataInput  ;
23 import java.io.DataInputStream ;
24 import java.io.IOException ;
25 import java.io.InputStream ;
26 import java.io.ObjectInput ;
27 import java.io.StreamCorruptedException ;
28
29 import org.apache.mina.common.BufferDataException;
30 import org.apache.mina.common.ByteBuffer;
31
32
39 public class ObjectSerializationInputStream extends InputStream implements
40 ObjectInput {
41
42 private final DataInputStream in;
43
44 private final ClassLoader classLoader;
45
46 private int maxObjectSize = 1048576;
47
48 public ObjectSerializationInputStream(InputStream in) {
49 this(in, null);
50 }
51
52 public ObjectSerializationInputStream(InputStream in,
53 ClassLoader classLoader) {
54 if (in == null) {
55 throw new NullPointerException ("in");
56 }
57 if (classLoader == null) {
58 classLoader = Thread.currentThread().getContextClassLoader();
59 }
60
61 if (in instanceof DataInputStream ) {
62 this.in = (DataInputStream ) in;
63 } else {
64 this.in = new DataInputStream (in);
65 }
66
67 this.classLoader = classLoader;
68 }
69
70
76 public int getMaxObjectSize() {
77 return maxObjectSize;
78 }
79
80
86 public void setMaxObjectSize(int maxObjectSize) {
87 if (maxObjectSize <= 0) {
88 throw new IllegalArgumentException ("maxObjectSize: "
89 + maxObjectSize);
90 }
91
92 this.maxObjectSize = maxObjectSize;
93 }
94
95 public int read() throws IOException {
96 return in.read();
97 }
98
99 public Object readObject() throws ClassNotFoundException , IOException {
100 int objectSize = in.readInt();
101 if (objectSize <= 0) {
102 throw new StreamCorruptedException ("Invalid objectSize: "
103 + objectSize);
104 }
105 if (objectSize > maxObjectSize) {
106 throw new StreamCorruptedException ("ObjectSize too big: "
107 + objectSize + " (expected: <= " + maxObjectSize + ')');
108 }
109
110 ByteBuffer buf = ByteBuffer.allocate(objectSize + 4, false);
111 buf.putInt(objectSize);
112 in.readFully(buf.array(), 4, objectSize);
113 buf.position(0);
114 buf.limit(objectSize + 4);
115
116 Object answer = buf.getObject(classLoader);
117 buf.release();
118 return answer;
119 }
120
121 public boolean readBoolean() throws IOException {
122 return in.readBoolean();
123 }
124
125 public byte readByte() throws IOException {
126 return in.readByte();
127 }
128
129 public char readChar() throws IOException {
130 return in.readChar();
131 }
132
133 public double readDouble() throws IOException {
134 return in.readDouble();
135 }
136
137 public float readFloat() throws IOException {
138 return in.readFloat();
139 }
140
141 public void readFully(byte[] b) throws IOException {
142 in.readFully(b);
143 }
144
145 public void readFully(byte[] b, int off, int len) throws IOException {
146 in.readFully(b, off, len);
147 }
148
149 public int readInt() throws IOException {
150 return in.readInt();
151 }
152
153
157 public String readLine() throws IOException {
158 return in.readLine();
159 }
160
161 public long readLong() throws IOException {
162 return in.readLong();
163 }
164
165 public short readShort() throws IOException {
166 return in.readShort();
167 }
168
169 public String readUTF() throws IOException {
170 return in.readUTF();
171 }
172
173 public int readUnsignedByte() throws IOException {
174 return in.readUnsignedByte();
175 }
176
177 public int readUnsignedShort() throws IOException {
178 return in.readUnsignedShort();
179 }
180
181 public int skipBytes(int n) throws IOException {
182 return in.skipBytes(n);
183 }
184 }
185 |
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