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1
19
20 package com.knowgate.jcifs.netbios;
21
22 import java.io.UnsupportedEncodingException  ;
23
24 import com.knowgate.jcifs.Config;
25 import com.knowgate.misc.Gadgets;
26
27 class Name {
28
29 private static final int TYPE_OFFSET = 31;
30 private static final int SCOPE_OFFSET = 33;
31 private static final String DEFAULT_SCOPE = Config.getProperty( "jcifs.netbios.scope" );
32
33 static final String OEM_ENCODING =
34 Config.getProperty( "jcifs.encoding",
35 System.getProperty( "file.encoding" ));
36
37 String name, scope;
38 int hexCode;
39 int srcHashCode;
42
43 Name() {
44 }
45 Name( String name, int hexCode, String scope ) {
46 if( name.length() > 15 ) {
47 name = name.substring( 0, 15 );
48 }
49 this.name = name.toUpperCase();
50 this.hexCode = hexCode;
51 this.scope = scope != null && scope.length() > 0 ? scope : DEFAULT_SCOPE;
52 this.srcHashCode = 0;
53 }
54
55 int writeWireFormat( byte[] dst, int dstIndex ) {
56 dst[dstIndex] = 0x20;
58
59 try {
61 byte tmp[] = name.getBytes( Name.OEM_ENCODING );
62 int i;
63 for( i = 0; i < tmp.length; i++ ) {
64 dst[dstIndex + ( 2 * i + 1 )] = (byte)((( tmp[i] & 0xF0 ) >> 4 ) + 0x41 );
65 dst[dstIndex + ( 2 * i + 2 )] = (byte)(( tmp[i] & 0x0F ) + 0x41 );
66 }
67 for( ; i < 15; i++ ) {
68 dst[dstIndex + ( 2 * i + 1 )] = (byte)0x43;
69 dst[dstIndex + ( 2 * i + 2 )] = (byte)0x41;
70 }
71 dst[dstIndex + TYPE_OFFSET] = (byte)((( hexCode & 0xF0 ) >> 4 ) + 0x41 );
72 dst[dstIndex + TYPE_OFFSET + 1] = (byte)(( hexCode & 0x0F ) + 0x41 );
73 } catch( UnsupportedEncodingException uee ) {
74 }
75 return SCOPE_OFFSET + writeScopeWireFormat( dst, dstIndex + SCOPE_OFFSET );
76 }
77
78 int readWireFormat( byte[] src, int srcIndex ) {
79
80 byte tmp[] = new byte[SCOPE_OFFSET];
81 int length = 15;
82 for( int i = 0; i < 15; i++ ) {
83 tmp[i] = (byte)((( src[srcIndex + ( 2 * i + 1 )] & 0xFF ) - 0x41 ) << 4 );
84 tmp[i] |= (byte)((( src[srcIndex + ( 2 * i + 2 )] & 0xFF ) - 0x41 ) & 0x0F );
85 if( tmp[i] != (byte)' ' ) {
86 length = i + 1;
87 }
88 }
89 try {
90 name = new String ( tmp, 0, length, Name.OEM_ENCODING );
91 } catch( UnsupportedEncodingException uee ) {
92 }
93 hexCode = (( src[srcIndex + TYPE_OFFSET] & 0xFF ) - 0x41 ) << 4;
94 hexCode |= (( src[srcIndex + TYPE_OFFSET + 1] & 0xFF ) - 0x41 ) & 0x0F;
95 return SCOPE_OFFSET + readScopeWireFormat( src, srcIndex + SCOPE_OFFSET );
96 }
97 int writeScopeWireFormat( byte[] dst, int dstIndex ) {
98 if( scope == null ) {
99 dst[dstIndex] = (byte)0x00;
100 return 1;
101 }
102
103 dst[dstIndex++] = (byte)'.';
105 try {
106 System.arraycopy( scope.getBytes( Name.OEM_ENCODING ), 0, dst, dstIndex, scope.length() );
107 } catch( UnsupportedEncodingException uee ) {
108 }
109 dstIndex += scope.length();
110
111 dst[dstIndex++] = (byte)0x00;
112
113
115 int i = dstIndex - 2;
116 int e = i - scope.length();
117 int c = 0;
118
119 do {
120 if( dst[i] == '.' ) {
121 dst[i] = (byte)c;
122 c = 0;
123 } else {
124 c++;
125 }
126 } while( i-- > e );
127 return scope.length() + 2;
128 }
129 int readScopeWireFormat( byte[] src, int srcIndex ) {
130 int start = srcIndex;
131 int n;
132 StringBuffer sb;
133
134 if(( n = src[srcIndex++] & 0xFF ) == 0 ) {
135 scope = null;
136 return 1;
137 }
138
139 try {
140 sb = new StringBuffer ( new String ( src, srcIndex, n, Name.OEM_ENCODING ));
141 srcIndex += n;
142 while(( n = src[srcIndex++] & 0xFF ) != 0 ) {
143 sb.append( '.' ).append( new String ( src, srcIndex, n, Name.OEM_ENCODING ));
144 srcIndex += n;
145 }
146 scope = sb.toString();
147 } catch( UnsupportedEncodingException uee ) {
148 }
149
150 return srcIndex - start;
151 }
152
153 public int hashCode() {
154 int result;
155
156 result = name.hashCode();
157 result += 65599 * hexCode;
158 result += 65599 * srcHashCode;
161 if( scope != null && scope.length() != 0 ) {
162 result += scope.hashCode();
163 }
164 return result;
165 }
166 public boolean equals( Object obj ) {
167 Name n;
168
169 if( !( obj instanceof Name )) {
170 return false;
171 }
172 n = (Name)obj;
173 if( scope == null && n.scope == null ) {
174 return name.equals( n.name ) && hexCode == n.hexCode;
175 }
176 return name.equals( n.name ) && hexCode == n.hexCode && scope.equals( n.scope );
177 }
178 public String toString() {
179 StringBuffer sb = new StringBuffer ();
180 String n = name;
181
182 if( n == null ) {
184 n = "null";
185 } else if( n.charAt( 0 ) == 0x01 ) {
186 char c[] = n.toCharArray();
187 c[0] = '.';
188 c[1] = '.';
189 c[14] = '.';
190 n = new String ( c );
191 }
192
193 sb.append( n ).append( "<" ).append( Gadgets.toHexString( hexCode, 2 )).append( ">" );
194 if( scope != null ) {
195 sb.append( "." ).append( scope );
196 }
197 return sb.toString();
198 }
199 }
200
201 |
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