Java Code Examples for java.net.InetAddress#hashCode()

static NbtAddress doNameQuery( Name name, InetAddress svr )
                                                throws UnknownHostException {
    NbtAddress addr;

    if( name.hexCode == 0x1d && svr == null ) {
        svr = CLIENT.baddr; // bit of a hack but saves a lookup
    }
    name.srcHashCode = svr != null ? svr.hashCode() : 0;
    addr = getCachedAddress( name );

    if( addr == null ) {
        /* This is almost exactly like InetAddress.java. See the
         * comments there for a description of how the LOOKUP_TABLE prevents
         * redundant queries from going out on the wire.
         */
        if(( addr = (NbtAddress)checkLookupTable( name )) == null ) {
            try {
                addr = CLIENT.getByName( name, svr );
            } catch( UnknownHostException uhe ) {
                addr = UNKNOWN_ADDRESS;
            } finally {
                cacheAddress( name, addr );
                updateLookupTable( name );
            }
        }
    }
    if( addr == UNKNOWN_ADDRESS ) {
        throw new UnknownHostException( name.toString() );
    }
    return addr;
}
 

public static boolean isWINS( InetAddress svr ) {
    for( int i = 0; svr != null && i < NBNS.length; i++ ) {
        if( svr.hashCode() == NBNS[i].hashCode() ) {
            return true;
        }
    }
    return false;
}
 

NbtAddress doNameQuery ( Name name, InetAddress svr ) throws UnknownHostException {
    NbtAddress addr;

    if ( name.hexCode == 0x1d && svr == null ) {
        svr = this.baddr; // bit of a hack but saves a lookup
    }
    name.srcHashCode = svr != null ? svr.hashCode() : 0;
    addr = getCachedAddress(name);

    if ( addr == null ) {
        /*
         * This is almost exactly like InetAddress.java. See the
         * comments there for a description of how the LOOKUP_TABLE prevents
         * redundant queries from going out on the wire.
         */
        if ( ( addr = (NbtAddress) checkLookupTable(name) ) == null ) {
            try {
                addr = getByName(name, svr);
            }
            catch ( UnknownHostException uhe ) {
                addr = this.unknownAddress;
            }
            finally {
                cacheAddress(name, addr);
                updateLookupTable(name);
            }
        }
    }
    if ( addr == this.unknownAddress ) {
        throw new UnknownHostException(name.toString());
    }
    return addr;
}
 

/**
 * 
 * @param svr
 * @return whether the given address is a WINS server
 */
protected boolean isWINS ( InetAddress svr ) {
    for ( int i = 0; svr != null && i < this.transportContext.getConfig().getWinsServers().length; i++ ) {
        if ( svr.hashCode() == this.transportContext.getConfig().getWinsServers()[ i ].hashCode() ) {
            return true;
        }
    }
    return false;
}
 

public int hashCode() {
    if (Host.UNKNOWN_HOST == this) return super.hashCode();
    InetAddress address = getInetAddress();
    if (this == LOCALHOST) return address.hashCode();
    if (address.isLoopbackAddress()) return LOCALHOST.hashCode();
    else return address.hashCode();
}
 

NbtAddress doNameQuery ( Name name, InetAddress svr ) throws UnknownHostException {
    NbtAddress addr;

    if ( name.hexCode == 0x1d && svr == null ) {
        svr = this.baddr; // bit of a hack but saves a lookup
    }
    name.srcHashCode = svr != null ? svr.hashCode() : 0;
    addr = getCachedAddress(name);

    if ( addr == null ) {
        /*
         * This is almost exactly like InetAddress.java. See the
         * comments there for a description of how the LOOKUP_TABLE prevents
         * redundant queries from going out on the wire.
         */
        if ( ( addr = (NbtAddress) checkLookupTable(name) ) == null ) {
            try {
                addr = getByName(name, svr);
            }
            catch ( UnknownHostException uhe ) {
                addr = this.unknownAddress;
            }
            finally {
                cacheAddress(name, addr);
                updateLookupTable(name);
            }
        }
    }
    if ( addr == this.unknownAddress ) {
        throw new UnknownHostException(name.toString());
    }
    return addr;
}
 

/**
 * 
 * @param svr
 * @return whether the given address is a WINS server
 */
protected boolean isWINS ( InetAddress svr ) {
    for ( int i = 0; svr != null && i < this.transportContext.getConfig().getWinsServers().length; i++ ) {
        if ( svr.hashCode() == this.transportContext.getConfig().getWinsServers()[ i ].hashCode() ) {
            return true;
        }
    }
    return false;
}
 

@Override
public int hashCode() {
    int result = 17;
    result = 31 * result + getName().hashCode();
    result = 31 * result + getPort();
    for (InetAddress address : getAddresses()) {
        result = 31 * result + address.hashCode();
    }
    for (Map.Entry<String, String> entry : attributes.entrySet()) {
        result = 31 * result + entry.hashCode();
    }
    return result;
}
 

/**
 * 
 */
private void initCache ( CIFSContext tc ) {
    this.unknownName = new Name(tc.getConfig(), "0.0.0.0", 0x00, null);
    this.unknownAddress = new NbtAddress(this.unknownName, 0, false, NbtAddress.B_NODE);
    this.addressCache.put(this.unknownName, new CacheEntry(this.unknownName, this.unknownAddress, SmbConstants.FOREVER));

    /*
     * Determine the InetAddress of the local interface
     * if one was not specified.
     */
    InetAddress localInetAddress = tc.getConfig().getNetbiosLocalAddress();
    if ( localInetAddress == null ) {
        try {
            localInetAddress = InetAddress.getLocalHost();
        }
        catch ( UnknownHostException uhe ) {
            /*
             * Java cannot determine the localhost. This is basically a config
             * issue on the host. There's not much we can do about it. Just
             * to suppress NPEs that would result we can create a possibly bogus
             * address. Pretty sure the below cannot actually thrown a UHE tho.
             */
            try {
                localInetAddress = InetAddress.getByName("127.0.0.1");
            }
            catch ( UnknownHostException ignored ) {
                throw new RuntimeCIFSException(ignored);
            }
        }
    }

    /*
     * If a local hostname was not provided a name like
     * JCIFS34_172_A6 will be dynamically generated for the
     * client. This is primarily (exclusively?) used as a
     * CallingName during session establishment.
     */
    String localHostname = tc.getConfig().getNetbiosHostname();
    if ( localHostname == null || localHostname.length() == 0 ) {
        byte[] addr = localInetAddress.getAddress();
        localHostname = "JCIFS" + ( addr[ 2 ] & 0xFF ) + "_" + ( addr[ 3 ] & 0xFF ) + "_"
                + Hexdump.toHexString((int) ( Math.random() * 0xFF ), 2);
    }

    /*
     * Create an NbtAddress for the local interface with
     * the name deduced above possibly with scope applied and
     * cache it forever.
     */
    Name localName = new Name(tc.getConfig(), localHostname, 0x00, tc.getConfig().getNetbiosScope());
    this.localhostAddress = new NbtAddress(
        localName,
        localInetAddress.hashCode(),
        false,
        NbtAddress.B_NODE,
        false,
        false,
        true,
        false,
        UNKNOWN_MAC_ADDRESS);
    cacheAddress(localName, this.localhostAddress, SmbConstants.FOREVER);
}
 

/**
 * 
 */
private void initCache ( CIFSContext tc ) {
    this.unknownName = new Name(tc.getConfig(), "0.0.0.0", 0x00, null);
    this.unknownAddress = new NbtAddress(this.unknownName, 0, false, NbtAddress.B_NODE);
    this.addressCache.put(this.unknownName, new CacheEntry(this.unknownName, this.unknownAddress, SmbConstants.FOREVER));

    /*
     * Determine the InetAddress of the local interface
     * if one was not specified.
     */
    InetAddress localInetAddress = tc.getConfig().getNetbiosLocalAddress();
    if ( localInetAddress == null ) {
        try {
            localInetAddress = InetAddress.getLocalHost();
        }
        catch ( UnknownHostException uhe ) {
            /*
             * Java cannot determine the localhost. This is basically a config
             * issue on the host. There's not much we can do about it. Just
             * to suppress NPEs that would result we can create a possibly bogus
             * address. Pretty sure the below cannot actually thrown a UHE tho.
             */
            try {
                localInetAddress = InetAddress.getByName("127.0.0.1");
            }
            catch ( UnknownHostException ignored ) {
                throw new RuntimeCIFSException(ignored);
            }
        }
    }

    /*
     * If a local hostname was not provided a name like
     * JCIFS34_172_A6 will be dynamically generated for the
     * client. This is primarily (exclusively?) used as a
     * CallingName during session establishment.
     */
    String localHostname = tc.getConfig().getNetbiosHostname();
    if ( localHostname == null || localHostname.length() == 0 ) {
        byte[] addr = localInetAddress.getAddress();
        localHostname = "JCIFS" + ( addr[ 2 ] & 0xFF ) + "_" + ( addr[ 3 ] & 0xFF ) + "_"
                + Hexdump.toHexString((int) ( Math.random() * 0xFF ), 2);
    }

    /*
     * Create an NbtAddress for the local interface with
     * the name deduced above possibly with scope applied and
     * cache it forever.
     */
    Name localName = new Name(tc.getConfig(), localHostname, 0x00, tc.getConfig().getNetbiosScope());
    this.localhostAddress = new NbtAddress(
        localName,
        localInetAddress.hashCode(),
        false,
        NbtAddress.B_NODE,
        false,
        false,
        true,
        false,
        UNKNOWN_MAC_ADDRESS);
    cacheAddress(localName, this.localhostAddress, SmbConstants.FOREVER);
}