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JCIFS is an Open Source client library that implements the CIFS/SMB networking protocol in 100% Java
/* jcifs smb client library in Java
* Copyright (C) 2000 "Michael B. Allen"
* "Christopher R. Hertel"
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package jcifs.netbios;
import java.io.UnsupportedEncodingException;
import jcifs.Config;
import jcifs.util.Hexdump;
public class Name {
private static final int TYPE_OFFSET = 31;
private static final int SCOPE_OFFSET = 33;
private static final String DEFAULT_SCOPE = Config.getProperty( "jcifs.netbios.scope" );
static final String OEM_ENCODING =
Config.getProperty( "jcifs.encoding",
System.getProperty( "file.encoding" ));
public String name, scope;
public int hexCode;
int srcHashCode; /* srcHashCode must be set by name resolution
* routines before entry into addressCache
*/
Name() {
}
public Name( String name, int hexCode, String scope ) {
if( name.length() > 15 ) {
name = name.substring( 0, 15 );
}
this.name = name.toUpperCase();
this.hexCode = hexCode;
this.scope = scope != null && scope.length() > 0 ? scope : DEFAULT_SCOPE;
this.srcHashCode = 0;
}
int writeWireFormat( byte[] dst, int dstIndex ) {
// write 0x20 in first byte
dst[dstIndex] = 0x20;
// write name
try {
byte tmp[] = name.getBytes( Name.OEM_ENCODING );
int i;
for( i = 0; i < tmp.length; i++ ) {
dst[dstIndex + ( 2 * i + 1 )] = (byte)((( tmp[i] & 0xF0 ) >> 4 ) + 0x41 );
dst[dstIndex + ( 2 * i + 2 )] = (byte)(( tmp[i] & 0x0F ) + 0x41 );
}
for( ; i < 15; i++ ) {
dst[dstIndex + ( 2 * i + 1 )] = (byte)0x43;
dst[dstIndex + ( 2 * i + 2 )] = (byte)0x41;
}
dst[dstIndex + TYPE_OFFSET] = (byte)((( hexCode & 0xF0 ) >> 4 ) + 0x41 );
dst[dstIndex + TYPE_OFFSET + 1] = (byte)(( hexCode & 0x0F ) + 0x41 );
} catch( UnsupportedEncodingException uee ) {
}
return SCOPE_OFFSET + writeScopeWireFormat( dst, dstIndex + SCOPE_OFFSET );
}
int readWireFormat( byte[] src, int srcIndex ) {
byte tmp[] = new byte[SCOPE_OFFSET];
int length = 15;
for( int i = 0; i < 15; i++ ) {
tmp[i] = (byte)((( src[srcIndex + ( 2 * i + 1 )] & 0xFF ) - 0x41 ) << 4 );
tmp[i] |= (byte)((( src[srcIndex + ( 2 * i + 2 )] & 0xFF ) - 0x41 ) & 0x0F );
if( tmp[i] != (byte)' ' ) {
length = i + 1;
}
}
try {
name = new String( tmp, 0, length, Name.OEM_ENCODING );
} catch( UnsupportedEncodingException uee ) {
}
hexCode = (( src[srcIndex + TYPE_OFFSET] & 0xFF ) - 0x41 ) << 4;
hexCode |= (( src[srcIndex + TYPE_OFFSET + 1] & 0xFF ) - 0x41 ) & 0x0F;
return SCOPE_OFFSET + readScopeWireFormat( src, srcIndex + SCOPE_OFFSET );
}
int writeScopeWireFormat( byte[] dst, int dstIndex ) {
if( scope == null ) {
dst[dstIndex] = (byte)0x00;
return 1;
}
// copy new scope in
dst[dstIndex++] = (byte)'.';
try {
System.arraycopy( scope.getBytes( Name.OEM_ENCODING ), 0, dst, dstIndex, scope.length() );
} catch( UnsupportedEncodingException uee ) {
}
dstIndex += scope.length();
dst[dstIndex++] = (byte)0x00;
// now go over scope backwards converting '.' to label length
int i = dstIndex - 2;
int e = i - scope.length();
int c = 0;
do {
if( dst[i] == '.' ) {
dst[i] = (byte)c;
c = 0;
} else {
c++;
}
} while( i-- > e );
return scope.length() + 2;
}
int readScopeWireFormat( byte[] src, int srcIndex ) {
int start = srcIndex;
int n;
StringBuffer sb;
if(( n = src[srcIndex++] & 0xFF ) == 0 ) {
scope = null;
return 1;
}
try {
sb = new StringBuffer( new String( src, srcIndex, n, Name.OEM_ENCODING ));
srcIndex += n;
while(( n = src[srcIndex++] & 0xFF ) != 0 ) {
sb.append( '.' ).append( new String( src, srcIndex, n, Name.OEM_ENCODING ));
srcIndex += n;
}
scope = sb.toString();
} catch( UnsupportedEncodingException uee ) {
}
return srcIndex - start;
}
public int hashCode() {
int result;
result = name.hashCode();
result += 65599 * hexCode;
result += 65599 * srcHashCode; /* hashCode is different depending
* on where it came from
*/
if( scope != null && scope.length() != 0 ) {
result += scope.hashCode();
}
return result;
}
public boolean equals( Object obj ) {
Name n;
if( !( obj instanceof Name )) {
return false;
}
n = (Name)obj;
if( scope == null && n.scope == null ) {
return name.equals( n.name ) && hexCode == n.hexCode;
}
return name.equals( n.name ) && hexCode == n.hexCode && scope.equals( n.scope );
}
public String toString() {
StringBuffer sb = new StringBuffer();
String n = name;
// fix MSBROWSE name
if( n == null ) {
n = "null";
} else if( n.charAt( 0 ) == 0x01 ) {
char c[] = n.toCharArray();
c[0] = '.';
c[1] = '.';
c[14] = '.';
n = new String( c );
}
sb.append( n ).append( "<" ).append( Hexdump.toHexString( hexCode, 2 )).append( ">" );
if( scope != null ) {
sb.append( "." ).append( scope );
}
return sb.toString();
}
}
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