| Methods Summary |
|---|
| public static void | addResolverRequest(java.lang.String host, HostNameToIPResolverListener l)
byte[] bytes = textToNumericFormat( host );
if ( bytes != null ){
try{
l.hostNameResolutionComplete( InetAddress.getByAddress( host, bytes ));
return;
}catch( UnknownHostException e ){
}
}
try{
request_queue_mon.enter();
request_queue.add( new request( host, l ));
request_semaphore.release();
if ( resolver_thread == null ){
resolver_thread =
new AEThread("HostNameToIPResolver")
{
public void
runSupport()
{
while(true){
try{
request_semaphore.reserve();
request req;
try{
request_queue_mon.enter();
req = (request)request_queue.remove(0);
}finally{
request_queue_mon.exit();
}
try{
InetAddress addr = syncResolve( req.getHost());
req.getListener().hostNameResolutionComplete( addr );
}catch( Throwable e ){
req.getListener().hostNameResolutionComplete( null );
}
}catch( Throwable e ){
Debug.printStackTrace( e );
}
}
}
};
resolver_thread.setDaemon( true );
resolver_thread.start();
}
}finally{
request_queue_mon.exit();
}
|
| public static byte[] | hostAddressToBytes(java.lang.String host)
byte[] res = textToNumericFormat( host );
return( res );
|
| public static boolean | isNonDNSName(java.lang.String host)
return( AENetworkClassifier.categoriseAddress( host ) != AENetworkClassifier.AT_PUBLIC );
|
| public static java.net.InetAddress | syncResolve(java.lang.String host)
if ( isNonDNSName( host )){
throw( new HostNameToIPResolverException( "non-DNS name '" + host + "'", true ));
}
// handle any raw addresses up front
byte[] bytes = textToNumericFormat( host );
if ( bytes != null ){
return( InetAddress.getByAddress( bytes ));
}
// filter out partially complete raw addresses by applying the basic rule in ftp://ftp.is.co.za/rfc/rfc3696.txt
// at least one dot + not all numeric
char[] chars = host.toCharArray();
boolean resolve = false;
for (int i=0;i<chars.length;i++){
if ( !( chars[i] == '." || Character.isDigit(chars[i]))){
resolve = true;
break;
}
}
if ( resolve ){
return( InetAddress.getByName( host));
}else{
throw( new UnknownHostException( "Host '" + host + "' doesn't obey minimal validation rules"));
}
|
| static byte[] | textToNumericFormat(java.lang.String src)
if (src.length() == 0) {
return null;
}
if ( src.indexOf(':") != -1 ){
// v6
try{
return( InetAddress.getByName(src).getAddress());
}catch( Throwable e ){
return( null );
}
}
int octets;
char ch;
byte[] dst = new byte[INADDRSZ];
char[] srcb = src.toCharArray();
boolean saw_digit = false;
octets = 0;
int i = 0;
int cur = 0;
while (i < srcb.length) {
ch = srcb[i++];
if (Character.isDigit(ch)) {
// note that Java byte is signed, so need to convert to int
int sum = (dst[cur] & 0xff)*10
+ (Character.digit(ch, 10) & 0xff);
if (sum > 255)
return null;
dst[cur] = (byte)(sum & 0xff);
if (! saw_digit) {
if (++octets > INADDRSZ)
return null;
saw_digit = true;
}
} else if (ch == '." && saw_digit) {
if (octets == INADDRSZ)
return null;
cur++;
dst[cur] = 0;
saw_digit = false;
} else
return null;
}
if (octets < INADDRSZ)
return null;
return dst;
|
