From 98bf43608e1187b164481d83501226d897e77d57 Mon Sep 17 00:00:00 2001
From: dec05eba <dec05eba@protonmail.com>
Date: Tue, 1 May 2018 13:58:29 +0200
Subject: Add command to get join key, fix crash when joining channel

---
 include/Channel.hpp |  2 +-
 src/Channel.cpp     |  4 ++--
 src/main.cpp        | 40 ++++++++++++++++++++++++++++++----------
 3 files changed, 33 insertions(+), 13 deletions(-)

diff --git a/include/Channel.hpp b/include/Channel.hpp
index be6e7c7..535cce5 100644
--- a/include/Channel.hpp
+++ b/include/Channel.hpp
@@ -31,7 +31,7 @@ namespace dchat
         const std::string& getName() const;
         const std::vector<User*> getUsers() const;
         User* getUserByPublicKey(const odhtdb::Signature::PublicKey &publicKey);
-        std::shared_ptr<odhtdb::Hash> getId();
+        const odhtdb::DatabaseNode& getNodeInfo() const;
         
         // If timestamp is 0, then timestamp is not used
         void addLocalMessage(const std::string &msg, User *owner, u64 timestampSeconds = 0);
diff --git a/src/Channel.cpp b/src/Channel.cpp
index b922833..f403984 100644
--- a/src/Channel.cpp
+++ b/src/Channel.cpp
@@ -100,9 +100,9 @@ namespace dchat
         return nullptr;
     }
     
-    std::shared_ptr<odhtdb::Hash> Channel::getId()
+    const odhtdb::DatabaseNode& Channel::getNodeInfo() const
     {
-        return databaseNodeInfo.getRequestHash();
+        return databaseNodeInfo;
     }
     
     void Channel::addLocalMessage(const std::string &msg, User *owner, u64 timestampSeconds)
diff --git a/src/main.cpp b/src/main.cpp
index 7245b6e..03f6a81 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -32,19 +32,23 @@ string createChannelJoinKey(const unique_ptr<odhtdb::DatabaseCreateResponse> &da
     return result;
 }
 
+string createJoinKeyFromDatabaseNode(const odhtdb::DatabaseNode &databaseNode)
+{
+    return databaseNode.getRequestHash()->toString() + "&" + odhtdb::bin2hex((const char*)databaseNode.getNodeEncryptionKey()->data, databaseNode.getNodeEncryptionKey()->size);
+}
+
 odhtdb::DatabaseNode createDatabaseNodeFromJoinKey(const string &joinKey)
 {
-    odhtdb::DatabaseNode result;
-    
     string nodeHashStr = odhtdb::hex2bin(joinKey.c_str(), 64);
-    memcpy(result.getRequestHash()->getData(), nodeHashStr.data(), nodeHashStr.size());
+    shared_ptr<odhtdb::Hash> nodeHash = make_shared<odhtdb::Hash>();
+    memcpy(nodeHash->getData(), nodeHashStr.data(), nodeHashStr.size());
     
     string nodeEncryptionKeyStr = odhtdb::hex2bin(joinKey.c_str() + 65, 64);
-    char *nodeEncryptionKeyRaw = new char[nodeEncryptionKeyStr.size()];
-    result.getNodeEncryptionKey()->data = nodeEncryptionKeyRaw;
-    result.getNodeEncryptionKey()->size = nodeEncryptionKeyStr.size();
+    shared_ptr<odhtdb::OwnedMemory> encryptionKey = make_shared<odhtdb::OwnedMemory>();
+    encryptionKey->data = new char[nodeEncryptionKeyStr.size()];
+    encryptionKey->size = nodeEncryptionKeyStr.size();
     
-    return result;
+    return odhtdb::DatabaseNode(encryptionKey, nodeHash);
 }
 
 void channelAddStoredMessage(Channel *channel, odhtdb::DatabaseStorageObject *nodeStorageObject)
@@ -62,7 +66,7 @@ void channelAddStoredMessage(Channel *channel, odhtdb::DatabaseStorageObject *no
 
 void channelAddStoredMessages(Channel *channel, const odhtdb::DatabaseStorageObjectList *nodeStorage)
 {
-    printf("Load %u messages in channel %s\n", nodeStorage->objects.size(), channel->getName().c_str());
+    printf("Load %u message(s) in channel %s\n", nodeStorage->objects.size(), channel->getName().c_str());
     for(auto nodeStorageAddedObject : nodeStorage->objects)
     {
         if(nodeStorageAddedObject->decryptedObject.operation == odhtdb::DatabaseOperation::ADD_DATA)
@@ -135,7 +139,7 @@ int main(int argc, char **argv)
         lock_guard<recursive_mutex> lock(channelMessageMutex);
         for(Channel *channel : channels)
         {
-            if(*request.nodeHash == *channel->getId())
+            if(*request.nodeHash == *channel->getNodeInfo().getRequestHash())
             {
                 User *user = channel->getUserByPublicKey(request.creatorUser->getPublicKey());
                 if(!user)
@@ -162,7 +166,7 @@ int main(int argc, char **argv)
         
         for(Channel *channel : channels)
         {
-            if(*request.nodeHash == *channel->getId())
+            if(*request.nodeHash == *channel->getNodeInfo().getRequestHash())
             {
                 User *userToAdd = channel->getUserByPublicKey(request.userToAdd->getPublicKey());
                 if(userToAdd && currentUserKeyPair && request.userToAdd->getPublicKey() == currentUserKeyPair->getPublicKey() && channel->getLocalUser()->type != User::Type::ONLINE)
@@ -424,6 +428,22 @@ int main(int argc, char **argv)
         Channel::getCurrent()->addLocalMessage(response, Channel::getCurrent()->getSystemUser());
     });
     
+    // Get channel join key
+    Command::add("joinkey", [&currentUserKeyPair, &currentUserName, &offlineChannel](const vector<string> &args)
+    {
+        Channel *currentChannel = Channel::getCurrent();
+        if(!currentChannel || currentChannel == &offlineChannel)
+        {
+            Channel::getCurrent()->addLocalMessage("You are not inside a channel", Channel::getCurrent()->getSystemUser());
+            return;
+        }
+        
+        string response = "Join key: ";
+        response += createJoinKeyFromDatabaseNode(currentChannel->getNodeInfo());
+        printf("%s\n", response.c_str());
+        Channel::getCurrent()->addLocalMessage(response, Channel::getCurrent()->getSystemUser());
+    });
+    
     sf::Event event;
     while (window.isOpen())
     {
-- 
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