have the domain-server generate connection secrets, closes #1837

domain-server/src/DomainServer.cpp

@@ -21,6 +21,8 @@
 #include <SharedUtil.h>
 #include <UUID.h>
 
+#include "DomainServerNodeData.h"
+
 #include "DomainServer.h"
 
 const int RESTART_HOLD_TIME_MSECS = 5 * 1000;
@@ -58,7 +60,8 @@ DomainServer::DomainServer(int argc, char* argv[]) :
 
     NodeList* nodeList = NodeList::createInstance(NodeType::DomainServer, domainServerPort);
     
-    connect(nodeList, SIGNAL(nodeKilled(SharedNodePointer)), this, SLOT(nodeKilled(SharedNodePointer)));
+    connect(nodeList, &NodeList::nodeAdded, this, &DomainServer::nodeAdded);
+    connect(nodeList, &NodeList::nodeKilled, this, &DomainServer::nodeKilled);
 
     QTimer* silentNodeTimer = new QTimer(this);
     connect(silentNodeTimer, SIGNAL(timeout()), nodeList, SLOT(removeSilentNodes()));
@@ -270,9 +273,7 @@ void DomainServer::readAvailableDatagrams() {
                     if (nodeUUID.isNull()) {
                         // this is a check in from an unidentified node
                         // we need to generate a session UUID for this node
-                        qDebug() << "received a check-in from an unidentified node";
                         nodeUUID = QUuid::createUuid();
-                        qDebug() << "UUID set to" << nodeUUID;
                     }
                     
                     SharedNodePointer checkInNode = nodeList->addOrUpdateNode(nodeUUID,
@@ -303,14 +304,33 @@ void DomainServer::readAvailableDatagrams() {
                     QDataStream broadcastDataStream(&broadcastPacket, QIODevice::Append);
                     broadcastDataStream << checkInNode->getUUID();
                     
+                    DomainServerNodeData* nodeData = reinterpret_cast<DomainServerNodeData*>(checkInNode->getLinkedData());
+                    
                     if (numInterestTypes > 0) {
                         // if the node has any interest types, send back those nodes as well
-                        foreach (const SharedNodePointer& node, nodeList->getNodeHash()) {
+                        foreach (const SharedNodePointer& otherNode, nodeList->getNodeHash()) {
-                            if (node->getUUID() != nodeUUID &&
+                            if (otherNode->getUUID() != nodeUUID &&
-                                memchr(nodeTypesOfInterest, node->getType(), numInterestTypes)) {
+                                memchr(nodeTypesOfInterest, otherNode->getType(), numInterestTypes)) {
                                 
                                 // don't send avatar nodes to other avatars, that will come from avatar mixer
-                                broadcastDataStream << *node.data();
+                                broadcastDataStream << *otherNode.data();
+                                
+                                // pack the secret that these two nodes will use to communicate with each other
+                                QUuid secretUUID = nodeData->getSessionSecretHash().value(otherNode->getUUID());
+                                if (secretUUID.isNull()) {
+                                    // generate a new secret UUID these two nodes can use
+                                    secretUUID = QUuid::createUuid();
+                                    
+                                    // set that on the current Node's sessionSecretHash
+                                    nodeData->getSessionSecretHash().insert(otherNode->getUUID(), secretUUID);
+                                    
+                                    // set it on the other Node's sessionSecretHash
+                                    reinterpret_cast<DomainServerNodeData*>(otherNode->getLinkedData())
+                                        ->getSessionSecretHash().insert(nodeUUID, secretUUID);
+                                    
+                                }
+                                
+                                broadcastDataStream << secretUUID;
                             }
                         }
                     }
@@ -556,6 +576,11 @@ void DomainServer::refreshStaticAssignmentAndAddToQueue(SharedAssignmentPointer&
     _staticAssignmentHash.remove(oldUUID);
 }
 
+void DomainServer::nodeAdded(SharedNodePointer node) {
+    // we don't use updateNodeWithData, so add the DomainServerNodeData to the node here
+    node->setLinkedData(new DomainServerNodeData());
+}
+
 void DomainServer::nodeKilled(SharedNodePointer node) {
     // if this node's UUID matches a static assignment we need to throw it back in the assignment queue
     SharedAssignmentPointer matchedAssignment = _staticAssignmentHash.value(node->getUUID());

domain-server/src/DomainServer.h

@@ -30,7 +30,9 @@ public:
     void exit(int retCode = 0);
     
 public slots:
-    /// Called by NodeList to inform us that a node has been killed.
+    /// Called by NodeList to inform us a node has been added
+    void nodeAdded(SharedNodePointer node);
+    /// Called by NodeList to inform us a node has been killed
     void nodeKilled(SharedNodePointer node);
     
 private:

domain-server/src/DomainServerNodeData.h

@@ -0,0 +1,26 @@
+//
+//  DomainServerNodeData.h
+//  hifi
+//
+//  Created by Stephen Birarda on 2/6/2014.
+//  Copyright (c) 2014 HighFidelity, Inc. All rights reserved.
+//
+
+#ifndef __hifi__DomainServerNodeData__
+#define __hifi__DomainServerNodeData__
+
+#include <QtCore/QHash>
+
+#include <NodeData.h>
+
+class DomainServerNodeData : public NodeData {
+public:
+    DomainServerNodeData() : _sessionSecretHash() {};
+    int parseData(const QByteArray& packet) { return 0; }
+    
+    QHash<QUuid, QUuid>& getSessionSecretHash() { return _sessionSecretHash; }
+private:
+    QHash<QUuid, QUuid> _sessionSecretHash;
+};
+
+#endif /* defined(__hifi__DomainServerNodeData__) */

libraries/shared/src/Node.cpp

@@ -52,6 +52,7 @@ Node::Node(const QUuid& uuid, char type, const HifiSockAddr& publicSocket, const
     _publicSocket(publicSocket),
     _localSocket(localSocket),
     _activeSocket(NULL),
+    _connectionSecret(),
     _bytesReceivedMovingAverage(NULL),
     _linkedData(NULL),
     _isAlive(true),

libraries/shared/src/Node.h

@@ -57,7 +57,6 @@ public:
     char getType() const { return _type; }
     void setType(char type) { _type = type; }
 
-
     const QUuid& getUUID() const { return _uuid; }
     void setUUID(const QUuid& uuid) { _uuid = uuid; }
 
@@ -77,6 +76,9 @@ public:
     void activatePublicSocket();
     void activateLocalSocket();
     
+    const QUuid& getConnectionSecret() const { return _connectionSecret; }
+    void setConnectionSecret(const QUuid& connectionSecret) { _connectionSecret = connectionSecret; }
+
     NodeData* getLinkedData() const { return _linkedData; }
     void setLinkedData(NodeData* linkedData) { _linkedData = linkedData; }
 
@@ -109,6 +111,7 @@ private:
     HifiSockAddr _publicSocket;
     HifiSockAddr _localSocket;
     HifiSockAddr* _activeSocket;
+    QUuid _connectionSecret;
     SimpleMovingAverage* _bytesReceivedMovingAverage;
     NodeData* _linkedData;
     bool _isAlive;

libraries/shared/src/NodeList.cpp

@@ -511,7 +511,7 @@ int NodeList::processDomainServerList(const QByteArray& packet) {
     // setup variables to read into from QDataStream
     qint8 nodeType;
     
-    QUuid nodeUUID;
+    QUuid nodeUUID, connectionUUID;
 
     HifiSockAddr nodePublicSocket;
     HifiSockAddr nodeLocalSocket;
@@ -534,7 +534,10 @@ int NodeList::processDomainServerList(const QByteArray& packet) {
             nodePublicSocket.setAddress(_domainSockAddr.getAddress());
         }
 
-        addOrUpdateNode(nodeUUID, nodeType, nodePublicSocket, nodeLocalSocket);
+        SharedNodePointer node = addOrUpdateNode(nodeUUID, nodeType, nodePublicSocket, nodeLocalSocket);
+        
+        packetStream >> connectionUUID;
+        node->setConnectionSecret(connectionUUID);
     }
 
     return readNodes;