/**
* Initialize the message history according to the router's configuration. Call this whenever the
* router identity changes.
*/
public synchronized void initialize(boolean forceReinitialize) {
if (!forceReinitialize) return;
if (_context.router().getRouterInfo() == null) {
_reinitializeJob.getTiming().setStartAfter(_context.clock().now() + 15 * 1000);
_context.jobQueue().addJob(_reinitializeJob);
} else {
_localIdent = getName(_context.routerHash());
// _unwrittenEntries = new ArrayList(64);
updateSettings();
// clear the history file on startup
if (_firstPass) {
File f = new File(_historyFile);
if (!f.isAbsolute()) f = new File(_context.getLogDir(), _historyFile);
f.delete();
_writeJob.getTiming().setStartAfter(_context.clock().now() + WRITE_DELAY);
_context.jobQueue().addJob(_writeJob);
_firstPass = false;
}
if (_doLog)
addEntry(getPrefix() + "** Router initialized (started up or changed identities)");
// _submitMessageHistoryJob.getTiming().setStartAfter(_context.clock().now() + 2*60*1000);
// _context.jobQueue().addJob(_submitMessageHistoryJob);
}
}
/**
* If the tunnel is short enough, and everybody in the tunnel, and the OBEP or IBGW for the paired
* tunnel, all support the new variable-sized tunnel build message, then use that, otherwise the
* old 8-entry version.
*
* @return null on error
*/
private static TunnelBuildMessage createTunnelBuildMessage(
RouterContext ctx,
TunnelPool pool,
PooledTunnelCreatorConfig cfg,
TunnelInfo pairedTunnel,
BuildExecutor exec) {
Log log = ctx.logManager().getLog(BuildRequestor.class);
long replyTunnel = 0;
Hash replyRouter = null;
boolean useVariable = SEND_VARIABLE && cfg.getLength() <= MEDIUM_RECORDS;
if (cfg.isInbound()) {
// replyTunnel = 0; // as above
replyRouter = ctx.routerHash();
if (useVariable) {
// check the reply OBEP and all the tunnel peers except ourselves
if (!supportsVariable(ctx, pairedTunnel.getPeer(pairedTunnel.getLength() - 1))) {
useVariable = false;
} else {
for (int i = 0; i < cfg.getLength() - 1; i++) {
if (!supportsVariable(ctx, cfg.getPeer(i))) {
useVariable = false;
break;
}
}
}
}
} else {
replyTunnel = pairedTunnel.getReceiveTunnelId(0).getTunnelId();
replyRouter = pairedTunnel.getPeer(0);
if (useVariable) {
// check the reply IBGW and all the tunnel peers except ourselves
if (!supportsVariable(ctx, replyRouter)) {
useVariable = false;
} else {
for (int i = 1; i < cfg.getLength() - 1; i++) {
if (!supportsVariable(ctx, cfg.getPeer(i))) {
useVariable = false;
break;
}
}
}
}
}
// populate and encrypt the message
TunnelBuildMessage msg;
List<Integer> order;
if (useVariable) {
if (cfg.getLength() <= SHORT_RECORDS) {
msg = new VariableTunnelBuildMessage(ctx, SHORT_RECORDS);
order = new ArrayList<Integer>(SHORT_ORDER);
} else {
msg = new VariableTunnelBuildMessage(ctx, MEDIUM_RECORDS);
order = new ArrayList<Integer>(MEDIUM_ORDER);
}
} else {
msg = new TunnelBuildMessage(ctx);
order = new ArrayList<Integer>(ORDER);
}
// This is in BuildExecutor.buildTunnel() now
// long replyMessageId = ctx.random().nextLong(I2NPMessage.MAX_ID_VALUE);
// cfg.setReplyMessageId(replyMessageId);
Collections.shuffle(order, ctx.random()); // randomized placement within the message
cfg.setReplyOrder(order);
if (log.shouldLog(Log.DEBUG)) log.debug("Build order: " + order + " for " + cfg);
for (int i = 0; i < msg.getRecordCount(); i++) {
int hop = order.get(i).intValue();
PublicKey key = null;
if (BuildMessageGenerator.isBlank(cfg, hop)) {
// erm, blank
} else {
Hash peer = cfg.getPeer(hop);
RouterInfo peerInfo = ctx.netDb().lookupRouterInfoLocally(peer);
if (peerInfo == null) {
if (log.shouldLog(Log.WARN))
log.warn(
"Peer selected for hop "
+ i
+ "/"
+ hop
+ " was not found locally: "
+ peer
+ " for "
+ cfg);
return null;
} else {
key = peerInfo.getIdentity().getPublicKey();
}
}
if (log.shouldLog(Log.DEBUG))
log.debug(cfg.getReplyMessageId() + ": record " + i + "/" + hop + " has key " + key);
BuildMessageGenerator.createRecord(i, hop, msg, cfg, replyRouter, replyTunnel, ctx, key);
}
BuildMessageGenerator.layeredEncrypt(ctx, msg, cfg, order);
return msg;
}
