/**
* Utility method for converting the non-firewalled elements of an AlternateLocationCollection to
* a smaller set of endpoints.
*/
private static Set getAsEndpoints(AlternateLocationCollection col) {
if (col == null || !col.hasAlternateLocations()) return Collections.EMPTY_SET;
long now = System.currentTimeMillis();
synchronized (col) {
Set endpoints = null;
int i = 0;
for (Iterator iter = col.iterator(); iter.hasNext() && i < MAX_LOCATIONS; ) {
Object o = iter.next();
if (!(o instanceof DirectAltLoc)) continue;
DirectAltLoc al = (DirectAltLoc) o;
if (al.canBeSent(AlternateLocation.MESH_RESPONSE)) {
IpPort host = al.getHost();
if (!NetworkUtils.isMe(host)) {
if (endpoints == null) endpoints = new HashSet();
if (!(host instanceof Endpoint)) host = new Endpoint(host.getAddress(), host.getPort());
endpoints.add(host);
i++;
al.send(now, AlternateLocation.MESH_RESPONSE);
}
} else if (!al.canBeSentAny()) iter.remove();
}
return endpoints == null ? Collections.EMPTY_SET : endpoints;
}
}
private static Set parseLocations(byte[] locBytes) {
Set locations = null;
IPFilter ipFilter = IPFilter.instance();
if (locBytes.length % 6 == 0) {
for (int j = 0; j < locBytes.length; j += 6) {
int port = ByteOrder.ushort2int(ByteOrder.leb2short(locBytes, j + 4));
if (!NetworkUtils.isValidPort(port)) continue;
byte[] ip = new byte[4];
ip[0] = locBytes[j];
ip[1] = locBytes[j + 1];
ip[2] = locBytes[j + 2];
ip[3] = locBytes[j + 3];
if (!NetworkUtils.isValidAddress(ip)
|| !ipFilter.allow(ip)
|| NetworkUtils.isMe(ip, port)) continue;
if (locations == null) locations = new HashSet();
locations.add(new Endpoint(ip, port));
}
}
return locations;
}
/** @return whether this rfd points to myself. */
public boolean isMe() {
return needsPush()
? Arrays.equals(_clientGUID, RouterService.getMyGUID())
: NetworkUtils.isMe(getHost(), getPort());
}