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1
19
20 package jcifs.netbios;
21
22 import java.io.UnsupportedEncodingException  ;
23 import jcifs.Config;
24 import jcifs.util.Hexdump;
25
26 public class Name {
27
28 private static final int TYPE_OFFSET = 31;
29 private static final int SCOPE_OFFSET = 33;
30 private static final String DEFAULT_SCOPE = Config.getProperty( "jcifs.netbios.scope" );
31
32 static final String OEM_ENCODING =
33 Config.getProperty( "jcifs.encoding",
34 System.getProperty( "file.encoding" ));
35
36 public String name, scope;
37 public int hexCode;
38 int srcHashCode;
41
42 Name() {
43 }
44 public Name( String name, int hexCode, String scope ) {
45 if( name.length() > 15 ) {
46 name = name.substring( 0, 15 );
47 }
48 this.name = name.toUpperCase();
49 this.hexCode = hexCode;
50 this.scope = scope != null && scope.length() > 0 ? scope : DEFAULT_SCOPE;
51 this.srcHashCode = 0;
52 }
53
54 int writeWireFormat( byte[] dst, int dstIndex ) {
55 dst[dstIndex] = 0x20;
57
58 try {
60 byte tmp[] = name.getBytes( Name.OEM_ENCODING );
61 int i;
62 for( i = 0; i < tmp.length; i++ ) {
63 dst[dstIndex + ( 2 * i + 1 )] = (byte)((( tmp[i] & 0xF0 ) >> 4 ) + 0x41 );
64 dst[dstIndex + ( 2 * i + 2 )] = (byte)(( tmp[i] & 0x0F ) + 0x41 );
65 }
66 for( ; i < 15; i++ ) {
67 dst[dstIndex + ( 2 * i + 1 )] = (byte)0x43;
68 dst[dstIndex + ( 2 * i + 2 )] = (byte)0x41;
69 }
70 dst[dstIndex + TYPE_OFFSET] = (byte)((( hexCode & 0xF0 ) >> 4 ) + 0x41 );
71 dst[dstIndex + TYPE_OFFSET + 1] = (byte)(( hexCode & 0x0F ) + 0x41 );
72 } catch( UnsupportedEncodingException uee ) {
73 }
74 return SCOPE_OFFSET + writeScopeWireFormat( dst, dstIndex + SCOPE_OFFSET );
75 }
76
77 int readWireFormat( byte[] src, int srcIndex ) {
78
79 byte tmp[] = new byte[SCOPE_OFFSET];
80 int length = 15;
81 for( int i = 0; i < 15; i++ ) {
82 tmp[i] = (byte)((( src[srcIndex + ( 2 * i + 1 )] & 0xFF ) - 0x41 ) << 4 );
83 tmp[i] |= (byte)((( src[srcIndex + ( 2 * i + 2 )] & 0xFF ) - 0x41 ) & 0x0F );
84 if( tmp[i] != (byte)' ' ) {
85 length = i + 1;
86 }
87 }
88 try {
89 name = new String ( tmp, 0, length, Name.OEM_ENCODING );
90 } catch( UnsupportedEncodingException uee ) {
91 }
92 hexCode = (( src[srcIndex + TYPE_OFFSET] & 0xFF ) - 0x41 ) << 4;
93 hexCode |= (( src[srcIndex + TYPE_OFFSET + 1] & 0xFF ) - 0x41 ) & 0x0F;
94 return SCOPE_OFFSET + readScopeWireFormat( src, srcIndex + SCOPE_OFFSET );
95 }
96 int writeScopeWireFormat( byte[] dst, int dstIndex ) {
97 if( scope == null ) {
98 dst[dstIndex] = (byte)0x00;
99 return 1;
100 }
101
102 dst[dstIndex++] = (byte)'.';
104 try {
105 System.arraycopy( scope.getBytes( Name.OEM_ENCODING ), 0, dst, dstIndex, scope.length() );
106 } catch( UnsupportedEncodingException uee ) {
107 }
108 dstIndex += scope.length();
109
110 dst[dstIndex++] = (byte)0x00;
111
112
114 int i = dstIndex - 2;
115 int e = i - scope.length();
116 int c = 0;
117
118 do {
119 if( dst[i] == '.' ) {
120 dst[i] = (byte)c;
121 c = 0;
122 } else {
123 c++;
124 }
125 } while( i-- > e );
126 return scope.length() + 2;
127 }
128 int readScopeWireFormat( byte[] src, int srcIndex ) {
129 int start = srcIndex;
130 int n;
131 StringBuffer sb;
132
133 if(( n = src[srcIndex++] & 0xFF ) == 0 ) {
134 scope = null;
135 return 1;
136 }
137
138 try {
139 sb = new StringBuffer ( new String ( src, srcIndex, n, Name.OEM_ENCODING ));
140 srcIndex += n;
141 while(( n = src[srcIndex++] & 0xFF ) != 0 ) {
142 sb.append( '.' ).append( new String ( src, srcIndex, n, Name.OEM_ENCODING ));
143 srcIndex += n;
144 }
145 scope = sb.toString();
146 } catch( UnsupportedEncodingException uee ) {
147 }
148
149 return srcIndex - start;
150 }
151
152 public int hashCode() {
153 int result;
154
155 result = name.hashCode();
156 result += 65599 * hexCode;
157 result += 65599 * srcHashCode;
160 if( scope != null && scope.length() != 0 ) {
161 result += scope.hashCode();
162 }
163 return result;
164 }
165 public boolean equals( Object obj ) {
166 Name n;
167
168 if( !( obj instanceof Name )) {
169 return false;
170 }
171 n = (Name)obj;
172 if( scope == null && n.scope == null ) {
173 return name.equals( n.name ) && hexCode == n.hexCode;
174 }
175 return name.equals( n.name ) && hexCode == n.hexCode && scope.equals( n.scope );
176 }
177 public String toString() {
178 StringBuffer sb = new StringBuffer ();
179 String n = name;
180
181 if( n == null ) {
183 n = "null";
184 } else if( n.charAt( 0 ) == 0x01 ) {
185 char c[] = n.toCharArray();
186 c[0] = '.';
187 c[1] = '.';
188 c[14] = '.';
189 n = new String ( c );
190 }
191
192 sb.append( n ).append( "<" ).append( Hexdump.toHexString( hexCode, 2 )).append( ">" );
193 if( scope != null ) {
194 sb.append( "." ).append( scope );
195 }
196 return sb.toString();
197 }
198 }
199
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