Update version numbers to 1.5

We were technically already using 22.04 for a bit, it got updated without us noticing since the version was set to `ubuntu-latest`.
Affix the version to 22.04 so that it doesn't get unexpectedly updated again, and update the artifact's zip to reflect the change.

.dockerignore

@@ -0,0 +1 @@
+version.h

.github/workflows/check-builds.yaml

@@ -53,7 +53,7 @@ jobs:
       - name: Upload build artifact
         uses: actions/upload-artifact@v2
         with:
-          name: 'ubuntu20_04-bin-x64-${{ env.SHORT_SHA }}'
+          name: 'ubuntu22_04-bin-x64-${{ env.SHORT_SHA }}'
           path: bin
 
   windows-build:
@@ -112,7 +112,7 @@ jobs:
 
   copy-artifacts:
     if: github.event_name != 'pull_request' && github.ref == 'refs/heads/master'
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     needs: [windows-build, ubuntu-build]
     env:
       BOT_SSH_KEY: ${{ secrets.BOT_SSH_KEY }}

.vscode/launch.json

@@ -0,0 +1,26 @@
+{
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "name": "Debug (Linux)",
+            "type": "cppdbg",
+            "request": "launch",
+            "program": "${workspaceFolder}/bin/fusion",
+            "cwd": "${workspaceFolder}"
+        },
+        {
+            "name": "Debug (Windows)",
+            "type": "cppvsdbg",
+            "request": "launch",
+            "program": "${workspaceFolder}/bin/Debug/winfusion.exe",
+            "cwd": "${workspaceFolder}"
+        },
+        {
+            "name": "Release (Windows)",
+            "type": "cppvsdbg",
+            "request": "launch",
+            "program": "${workspaceFolder}/bin/Release/winfusion.exe",
+            "cwd": "${workspaceFolder}"
+        }
+    ]
+}

CMakeLists.txt

@@ -44,7 +44,7 @@ add_executable(openfusion ${SOURCES})
 set_target_properties(openfusion PROPERTIES OUTPUT_NAME ${BIN_NAME})
 
 # find sqlite3 and use it
-find_package(sqlite3 REQUIRED)
+find_package(SQLite3 REQUIRED)
 target_include_directories(openfusion PRIVATE ${SQLite3_INCLUDE_DIRS})
 target_link_libraries(openfusion PRIVATE ${SQLite3_LIBRARIES})
 
@@ -56,5 +56,5 @@ set_property(TARGET openfusion PROPERTY VS_DEBUGGER_WORKING_DIRECTORY "${CMAKE_S
 # It's not something you should do, but it's there if you need it...
 if (NOT CMAKE_GENERATOR MATCHES "Visual Studio" AND NOT CMAKE_CXX_COMPILER_ID STREQUAL "MSVC" AND NOT CMAKE_GENERATOR MATCHES "MinGW Makefiles")
 	find_package(Threads REQUIRED)
-	target_link_libraries(openfusion pthread)
+	target_link_libraries(openfusion PRIVATE pthread)
 endif()

Dockerfile

@@ -0,0 +1,21 @@
+FROM debian:latest
+
+WORKDIR /usr/src/app
+
+RUN apt-get -y update && apt-get install -y \
+git \
+clang \
+make \
+libsqlite3-dev
+
+COPY . ./
+
+RUN make -j8
+
+# tabledata should be copied from the host;
+# clone it there before building the container
+#RUN git submodule update --init --recursive
+
+CMD ["./bin/fusion"]
+
+LABEL Name=openfusion Version=0.0.1

LICENSE.md

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2020-2022 OpenFusion Contributors
+Copyright (c) 2020-2023 OpenFusion Contributors
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

README.md

@@ -13,13 +13,13 @@ OpenFusion is a reverse-engineered server for FusionFall. It primarily targets v
 
 ### Getting Started
 #### Method A: Installer (Easiest)
-1. Download the client installer by clicking [here](https://github.com/OpenFusionProject/OpenFusion/releases/download/1.4/OpenFusionClient-1.4-Installer.exe) - choose to run the file.
+1. Download the client installer by clicking [here](https://github.com/OpenFusionProject/OpenFusion/releases/download/1.5/OpenFusionClient-1.5-Installer.exe) - choose to run the file.
 2. After a few moments, the client should open: you will be given a choice between two public servers by default. Select the one you wish to play and click connect.
 3. To create an account, simply enter the details you wish to use at the login screen then click Log In. Do *not* click register, as this will just lead to a blank screen.
 4. Make a new character, and enjoy the game! Your progress will be saved automatically, and you can resume playing by entering the login details you used in step 3.
 
 #### Method B: Standalone .zip file
-1. Download the client from [here](https://github.com/OpenFusionProject/OpenFusion/releases/download/1.4/OpenFusionClient-1.4.zip).
+1. Download the client from [here](https://github.com/OpenFusionProject/OpenFusion/releases/download/1.5/OpenFusionClient-1.5.zip).
 2. Extract it to a folder of your choice. Note: if you are upgrading from an older version, it is preferable to start with a fresh folder rather than overwriting a previous install.
 3. Run OpenFusionClient.exe - you will be given a choice between two public servers by default. Select the one you wish to play and click connect.
 4. To create an account, simply enter the details you wish to use at the login screen then click Log In. Do *not* click register, as this will just lead to a blank screen.
@@ -29,7 +29,7 @@ Instructions for getting the client to run on Linux through Wine can be found [h
 
 ### Hosting a server
 
-1. Grab `OpenFusionServer-1.4-original.zip` or `OpenFusionServer-1.4-academy.zip` from [here](https://github.com/OpenFusionProject/OpenFusion/releases/tag/1.4).
+1. Grab `OpenFusionServer-1.5-original.zip` or `OpenFusionServer-1.5-academy.zip` from [here](https://github.com/OpenFusionProject/OpenFusion/releases/tag/1.5).
 2. Extract it to a folder of your choice, then run `winfusion.exe` (Windows) or `fusion` (Linux) to start the server.
 3. Add a new server to the client's list:
     1. For Description, enter anything you want. This is what will show up in the server list.
@@ -83,7 +83,7 @@ This just works if you're all under the same LAN, but if you want to play over t
 
 ## Compiling 
 
-OpenFusion has one external dependency: SQLite. You can install it on Windows using `vcpkg`, and on Unix/Linux using your distribution's package manager. For a more indepth guide on how to set up vcpkg, [read this guide on the wiki](https://github.com/OpenFusionProject/OpenFusion/wiki/Installing-SQLite-on-Windows-using-vcpkg).
+OpenFusion has one external dependency: SQLite. The oldest compatible version is `3.33.0`. You can install it on Windows using `vcpkg`, and on Unix/Linux using your distribution's package manager. For a more indepth guide on how to set up vcpkg, [read this guide on the wiki](https://github.com/OpenFusionProject/OpenFusion/wiki/Installing-SQLite-on-Windows-using-vcpkg).
 
 You have two choices for compiling OpenFusion: the included Makefile and the included CMakeLists file.
 

docker-compose.yml

@@ -0,0 +1,12 @@
+version: '3.4'
+
+services:
+  openfusion:
+    image: openfusion
+    build:
+      context: .
+      dockerfile: ./Dockerfile
+    ports:
+      - "23000:23000"
+      - "23001:23001"
+      - "8003:8003"

src/BuiltinCommands.cpp

@@ -69,31 +69,41 @@ static void setValuePlayer(CNSocket* sock, CNPacketData* data) {
 
     // Handle serverside value-changes
     switch (setData->iSetValueType) {
-    case 1:
+    case CN_GM_SET_VALUE_TYPE__HP:
-        plr->HP = setData->iSetValue;
+        response.iSetValue = plr->HP = setData->iSetValue;
         break;
-    case 2:
+    case CN_GM_SET_VALUE_TYPE__WEAPON_BATTERY :
         plr->batteryW = setData->iSetValue;
+
         // caps
         if (plr->batteryW > 9999)
             plr->batteryW = 9999;
+
+        response.iSetValue = plr->batteryW;
         break;
-    case 3:
+    case CN_GM_SET_VALUE_TYPE__NANO_BATTERY:
         plr->batteryN = setData->iSetValue;
+
         // caps
         if (plr->batteryN > 9999)
             plr->batteryN = 9999;
+
+        response.iSetValue = plr->batteryN;
         break;
-    case 4:
+    case CN_GM_SET_VALUE_TYPE__FUSION_MATTER:
         Missions::updateFusionMatter(sock, setData->iSetValue - plr->fusionmatter);
+        response.iSetValue = plr->fusionmatter;
         break;
-    case 5:
+    case CN_GM_SET_VALUE_TYPE__CANDY:
-        plr->money = setData->iSetValue;
+        response.iSetValue = plr->money = setData->iSetValue;
+        break;
+    case CN_GM_SET_VALUE_TYPE__SPEED:
+    case CN_GM_SET_VALUE_TYPE__JUMP:
+        response.iSetValue = setData->iSetValue;
         break;
     }
 
     response.iPC_ID = setData->iPC_ID;
-    response.iSetValue = setData->iSetValue;
     response.iSetValueType = setData->iSetValueType;
 
     sock->sendPacket(response, P_FE2CL_GM_REP_PC_SET_VALUE);

src/Combat.cpp

@@ -69,7 +69,7 @@ static bool checkRapidFire(CNSocket *sock, int targetCount) {
 
     // 3+ targets should never be possible
     if (targetCount > 3)
-        plr->suspicionRating += 10000;
+        plr->suspicionRating += 10001;
 
     // kill the socket when the player is too suspicious
     if (plr->suspicionRating > 10000) {

src/CustomCommands.cpp

@@ -358,23 +358,19 @@ static void npcRotateCommand(std::string full, std::vector<std::string>& args, C
     int angle = (plr->angle + 180) % 360;
     NPCManager::updateNPCPosition(npc->appearanceData.iNPC_ID, npc->x, npc->y, npc->z, npc->instanceID, angle);
 
-    // if it's a gruntwork NPC, rotate in-place
+    bool isGruntworkNpc = true;
-    if (TableData::RunningMobs.find(npc->appearanceData.iNPC_ID) != TableData::RunningMobs.end()) {
-        NPCManager::updateNPCPosition(npc->appearanceData.iNPC_ID, npc->x, npc->y, npc->z, npc->instanceID, angle);
 
-        Chat::sendServerMessage(sock, "[NPCR] Successfully set angle to " + std::to_string(angle) + " for gruntwork NPC "
+    // add a rotation entry to the gruntwork file, unless it's already a gruntwork NPC
-            + std::to_string(npc->appearanceData.iNPC_ID));
+    if (TableData::RunningMobs.find(npc->appearanceData.iNPC_ID) == TableData::RunningMobs.end()) {
-    } else {
         TableData::RunningNPCRotations[npc->appearanceData.iNPC_ID] = angle;
-
+        isGruntworkNpc = false;
-        Chat::sendServerMessage(sock, "[NPCR] Successfully set angle to " + std::to_string(angle) + " for NPC "
-            + std::to_string(npc->appearanceData.iNPC_ID));
     }
 
-    // update rotation clientside
+    Chat::sendServerMessage(sock, "[NPCR] Successfully set angle to " + std::to_string(angle) +
-    INITSTRUCT(sP_FE2CL_NPC_ENTER, pkt);
+        " for " + (isGruntworkNpc ? "gruntwork " : "") + "NPC " + std::to_string(npc->appearanceData.iNPC_ID));
-    pkt.NPCAppearanceData = npc->appearanceData;
+
-    sock->sendPacket(pkt, P_FE2CL_NPC_ENTER);
+    // update rotation clientside by refreshing the player's chunks (same as the /refresh command)
+    PlayerManager::updatePlayerPositionForWarp(sock, plr->x, plr->y, plr->z, plr->instanceID);
 }
 
 static void refreshCommand(std::string full, std::vector<std::string>& args, CNSocket* sock) {

src/TableData.cpp

@@ -37,6 +37,22 @@ public:
     const char *what() const throw() { return msg.c_str(); }
 };
 
+/*
+ * We must refuse to run if an invalid NPC type is found in the JSONs, especially
+ * the gruntwork file. If we were to just skip loading invalid NPCs, they would get
+ * silently dropped from the gruntwork file, which would be confusing in situations
+ * where a gruntwork file for the wrong game build was accidentally loaded.
+ */
+static void ensureValidNPCType(int type, std::string filename) {
+    // last known NPC type
+    int npcLimit = NPCManager::NPCData.back()["m_iNpcNumber"];
+
+    if (type > npcLimit) {
+        std::cout << "[FATAL] " << filename << " contains an invalid NPC type: " << type << std::endl;
+        exit(1);
+    }
+}
+
 /*
  * Create a full and properly-paced path by interpolating between keyframes.
  */
@@ -662,6 +678,8 @@ static void loadEggs(json& eggData, int32_t* nextId) {
  * Load gruntwork output, if it exists
  */
 static void loadGruntworkPre(json& gruntwork, int32_t* nextId) {
+    if (gruntwork.is_null())
+        return;
 
     try {
         auto paths = gruntwork["paths"];
@@ -711,8 +729,8 @@ static void loadGruntworkPre(json& gruntwork, int32_t* nextId) {
 }
 
 static void loadGruntworkPost(json& gruntwork, int32_t* nextId) {
-
+    if (gruntwork.is_null())
-    if (gruntwork.is_null()) return;
+        return;
 
     try {
         // skyway paths
@@ -764,6 +782,8 @@ static void loadGruntworkPost(json& gruntwork, int32_t* nextId) {
             int id = (*nextId)--;
             uint64_t instanceID = mob.find("iMapNum") == mob.end() ? INSTANCE_OVERWORLD : (int)mob["iMapNum"];
 
+            ensureValidNPCType((int)mob["iNPCType"], settings::GRUNTWORKJSON);
+
             if (NPCManager::NPCData[(int)mob["iNPCType"]]["m_iTeam"] == 2) {
                 npc = new Mob(mob["iX"], mob["iY"], mob["iZ"], instanceID, mob["iNPCType"],
                     NPCManager::NPCData[(int)mob["iNPCType"]], id);
@@ -783,6 +803,9 @@ static void loadGruntworkPost(json& gruntwork, int32_t* nextId) {
         auto groups = gruntwork["groups"];
         for (auto _group = groups.begin(); _group != groups.end(); _group++) {
             auto leader = _group.value();
+
+            ensureValidNPCType((int)leader["iNPCType"], settings::GRUNTWORKJSON);
+
             auto td = NPCManager::NPCData[(int)leader["iNPCType"]];
             uint64_t instanceID = leader.find("iMapNum") == leader.end() ? INSTANCE_OVERWORLD : (int)leader["iMapNum"];
 
@@ -803,6 +826,9 @@ static void loadGruntworkPost(json& gruntwork, int32_t* nextId) {
                 int followerCount = 0;
                 for (json::iterator _fol = followers.begin(); _fol != followers.end(); _fol++) {
                     auto follower = _fol.value();
+
+                    ensureValidNPCType((int)follower["iNPCType"], settings::GRUNTWORKJSON);
+
                     auto tdFol = NPCManager::NPCData[(int)follower["iNPCType"]];
                     Mob* tmpFol = new Mob((int)leader["iX"] + (int)follower["iOffsetX"], (int)leader["iY"] + (int)follower["iOffsetY"], leader["iZ"], leader["iAngle"], instanceID, follower["iNPCType"], tdFol, *nextId);
 
@@ -859,10 +885,9 @@ static void loadNPCs(json& npcData) {
             npcID += NPC_ID_OFFSET;
             int instanceID = npc.find("iMapNum") == npc.end() ? INSTANCE_OVERWORLD : (int)npc["iMapNum"];
             int type = (int)npc["iNPCType"];
-            if (NPCManager::NPCData[type].is_null()) {
+
-                std::cout << "[WARN] NPC type " << type << " not found; skipping (json#" << _npc.key() << ")" << std::endl;
+            ensureValidNPCType(type, settings::NPCJSON);
-                continue;
+
-            }
 #ifdef ACADEMY
             // do not spawn NPCs in the future
             if (npc["iX"] > 512000 && npc["iY"] < 256000)
@@ -904,10 +929,9 @@ static void loadMobs(json& npcData, int32_t* nextId) {
             int npcID = std::strtol(_npc.key().c_str(), nullptr, 10); // parse ID string to integer
             npcID += MOB_ID_OFFSET;
             int type = (int)npc["iNPCType"];
-            if (NPCManager::NPCData[type].is_null()) {
+
-                std::cout << "[WARN] NPC type " << type << " not found; skipping (json#" << _npc.key() << ")" << std::endl;
+            ensureValidNPCType(type, settings::MOBJSON);
-                continue;
+
-            }
             auto td = NPCManager::NPCData[type];
             uint64_t instanceID = npc.find("iMapNum") == npc.end() ? INSTANCE_OVERWORLD : (int)npc["iMapNum"];
 
@@ -935,7 +959,10 @@ static void loadMobs(json& npcData, int32_t* nextId) {
         for (json::iterator _group = groupData.begin(); _group != groupData.end(); _group++) {
             auto leader = _group.value();
             int leadID = std::strtol(_group.key().c_str(), nullptr, 10); // parse ID string to integer
+
             leadID += MOB_GROUP_ID_OFFSET;
+            ensureValidNPCType(leader["iNPCType"], settings::MOBJSON);
+
             auto td = NPCManager::NPCData[(int)leader["iNPCType"]];
             uint64_t instanceID = leader.find("iMapNum") == leader.end() ? INSTANCE_OVERWORLD : (int)leader["iMapNum"];
             auto followers = leader["aFollowers"];
@@ -965,6 +992,9 @@ static void loadMobs(json& npcData, int32_t* nextId) {
                 int followerCount = 0;
                 for (json::iterator _fol = followers.begin(); _fol != followers.end(); _fol++) {
                     auto follower = _fol.value();
+
+                    ensureValidNPCType(follower["iNPCType"], settings::MOBJSON);
+
                     auto tdFol = NPCManager::NPCData[(int)follower["iNPCType"]];
                     Mob* tmpFol = new Mob((int)leader["iX"] + (int)follower["iOffsetX"], (int)leader["iY"] + (int)follower["iOffsetY"], leader["iZ"], leader["iAngle"], instanceID, follower["iNPCType"], tdFol, *nextId);
 
@@ -1070,19 +1100,39 @@ void TableData::init() {
     };
 
     // load JSON data into tables
-    std::ifstream fstream;
     for (int i = 0; i < 7; i++) {
         std::pair<json*, std::string>& table = tables[i];
-        fstream.open(settings::TDATADIR + "/" + table.second); // open file
+
-        if (!fstream.fail()) {
+        // scope for fstream
-            fstream >> *table.first; // load file contents into table
+        {
-        } else {
+            std::ifstream fstream;
-            if (table.first != &gruntwork) { // gruntwork isn't critical
+            fstream.open(settings::TDATADIR + "/" + table.second); // open file
+
+            // did we fail to open the file?
+            if (fstream.fail()) {
+                // gruntwork isn't critical
+                if (table.first == &gruntwork)
+                    continue;
+
                 std::cerr << "[FATAL] Critical tdata file missing: " << table.second << std::endl;
                 exit(1);
             }
+
+            // is the file empty?
+            if (fstream.peek() == std::ifstream::traits_type::eof()) {
+                // tolerate empty gruntwork file
+                if (table.first == &gruntwork) {
+                    std::cout << "[WARN] The gruntwork file is empty" << std::endl;
+                    continue;
+                }
+
+                std::cerr << "[FATAL] Critical tdata file is empty: " << table.second << std::endl;
+                exit(1);
+            }
+
+            // load file contents into table
+            fstream >> *table.first;
         }
-        fstream.close();
 
         // patching: load each patch directory specified in the config file
 
@@ -1097,11 +1147,11 @@ void TableData::init() {
             std::string patchModuleName = *it;
             std::string patchFile = settings::PATCHDIR + patchModuleName + "/" + table.second;
             try {
+                std::ifstream fstream;
                 fstream.open(patchFile);
                 fstream >> patch; // load into temporary json object
                 std::cout << "[INFO] Patching " << patchFile << std::endl;
                 patchJSON(table.first, &patch); // patch
-                fstream.close();
             } catch (const std::exception& err) {
                 // no-op
             }

src/core/CNProtocol.cpp

@@ -41,7 +41,8 @@ int CNSocketEncryption::xorData(uint8_t* buffer, uint8_t* key, int size) {
 uint64_t CNSocketEncryption::createNewKey(uint64_t uTime, int32_t iv1, int32_t iv2) {
     uint64_t num = (uint64_t)(iv1 + 1);
     uint64_t num2 = (uint64_t)(iv2 + 1);
-    uint64_t dEKey = (uint64_t)(*(uint64_t*)&defaultKey[0]);
+    uint64_t dEKey;
+    memcpy(&dEKey, defaultKey, sizeof(dEKey));
     return dEKey * (uTime * num * num2);
 }
 
@@ -65,7 +66,7 @@ CNPacketData::CNPacketData(void *b, uint32_t t, int l, int trnum, void *trs):
 // ========================================================[[ CNSocket ]]========================================================
 
 CNSocket::CNSocket(SOCKET s, struct sockaddr_in &addr, PacketHandler ph): sock(s), sockaddr(addr), pHandler(ph) {
-    EKey = (uint64_t)(*(uint64_t*)&CNSocketEncryption::defaultKey[0]);
+    memcpy(&EKey, CNSocketEncryption::defaultKey, sizeof(EKey));
 }
 
 bool CNSocket::sendData(uint8_t* data, int size) {
@@ -109,7 +110,11 @@ bool CNSocket::isAlive() {
 }
 
 void CNSocket::kill() {
+    if (!alive)
+        return;
+
     alive = false;
+
 #ifdef _WIN32
     shutdown(sock, SD_BOTH);
     closesocket(sock);
@@ -241,9 +246,10 @@ void CNSocket::step() {
     if (readSize <= 0) {
         // we aren't reading a packet yet, try to start looking for one
         int recved = recv(sock, (buffer_t*)readBuffer, sizeof(int32_t), 0);
-        if (recved == 0) {
+        if (recved >= 0 && recved < sizeof(int32_t)) {
-            // the socket was closed normally
+            // too little data for readSize or the socket was closed normally (when 0 bytes were read)
             kill();
+            return;
         } else if (!SOCKETERROR(recved)) {
             // we got our packet size!!!!
             readSize = *((int32_t*)readBuffer);
@@ -264,11 +270,12 @@ void CNSocket::step() {
     }
 
     if (readSize > 0 && readBufferIndex < readSize) {
-        // read until the end of the packet! (or at least try too)
+        // read until the end of the packet (or at least try to)
         int recved = recv(sock, (buffer_t*)(readBuffer + readBufferIndex), readSize - readBufferIndex, 0);
         if (recved == 0) {
             // the socket was closed normally
             kill();
+            return;
         } else if (!SOCKETERROR(recved))
             readBufferIndex += recved;
         else if (OF_ERRNO != OF_EWOULD) {
@@ -411,9 +418,9 @@ void CNServer::addPollFD(SOCKET s) {
     fds.push_back({s, POLLIN});
 }
 
-void CNServer::removePollFD(int i) {
+void CNServer::removePollFD(int fd) {
     auto it = fds.begin();
-    while (it != fds.end() && it->fd != fds[i].fd)
+    while (it != fds.end() && it->fd != fd)
         it++;
     assert(it != fds.end());
 
@@ -458,7 +465,7 @@ void CNServer::start() {
                 if (!setSockNonblocking(sock, newConnectionSocket))
                     continue;
 
-                std::cout << "New connection! " << inet_ntoa(address.sin_addr) << std::endl;
+                std::cout << "New " << serverType << " connection! " << inet_ntoa(address.sin_addr) << std::endl;
 
                 addPollFD(newConnectionSocket);
 
@@ -473,10 +480,15 @@ void CNServer::start() {
             } else {
                 std::lock_guard<std::mutex> lock(activeCrit); // protect operations on connections
 
+                // halt packet handling if server is shutting down
+                if (!active)
+                    return;
+
                 // player sockets
                 if (connections.find(fds[i].fd) == connections.end()) {
-                    std::cout << "[WARN] Event on non-existant socket?" << std::endl;
+                    std::cout << "[FATAL] Event on non-existent socket: " << fds[i].fd << std::endl;
-                    continue; // just to be safe
+                    assert(0);
+                    /* not reached */
                 }
 
                 CNSocket* cSock = connections[fds[i].fd];
@@ -485,22 +497,29 @@ void CNServer::start() {
                 if (fds[i].revents & ~POLLIN)
                     cSock->kill();
 
-                if (cSock->isAlive()) {
+                if (cSock->isAlive())
                     cSock->step();
-                } else {
-                    killConnection(cSock);
-                    connections.erase(fds[i].fd);
-                    delete cSock;
-
-                    removePollFD(i);
-
-                    // a new entry was moved to this position, so we check it again
-                    i--;
-                }
             }
         }
 
         onStep();
+
+        // clean up dead connection sockets
+        auto it = connections.begin();
+        while (it != connections.end()) {
+            CNSocket *cSock = it->second;
+
+            if (!cSock->isAlive()) {
+                killConnection(cSock);
+                it = connections.erase(it);
+
+                removePollFD(cSock->sock);
+
+                delete cSock;
+            } else {
+                it++;
+            }
+        }
     }
 }
 

src/core/CNProtocol.hpp

@@ -230,6 +230,7 @@ protected:
     const size_t STARTFDSCOUNT = 8; // number of initial PollFD slots
     std::vector<PollFD> fds;
 
+    std::string serverType = "invalid";
     SOCKET sock;
     uint16_t port;
     socklen_t addressSize;

src/db/Database.hpp

@@ -41,6 +41,7 @@ namespace Database {
         uint64_t Timestamp;
     };
     
+    void init();
     void open();
     void close();
 

src/db/init.cpp

@@ -236,7 +236,20 @@ static int getTableSize(std::string tableName) {
     return result;
 }
 
+void Database::init() {
+    std::cout << "[INFO] Built with libsqlite " SQLITE_VERSION << std::endl;
+
+    if (sqlite3_libversion_number() != SQLITE_VERSION_NUMBER)
+        std::cout << "[INFO] Using libsqlite " << std::string(sqlite3_libversion()) << std::endl;
+
+    if (sqlite3_libversion_number() < MIN_SUPPORTED_SQLITE_NUMBER) {
+        std::cerr << "[FATAL] Runtime sqlite version too old. Minimum compatible version: " MIN_SUPPORTED_SQLITE << std::endl;
+        exit(1);
+    }
+}
+
 void Database::open() {
+
     // XXX: move locks here
     int rc = sqlite3_open(settings::DBPATH.c_str(), &db);
     if (rc != SQLITE_OK) {

src/db/internal.hpp

@@ -3,6 +3,15 @@
 #include "db/Database.hpp"
 #include <sqlite3.h>
 
+#define MIN_SUPPORTED_SQLITE_NUMBER 3033000
+#define MIN_SUPPORTED_SQLITE "3.33.0"
+// we can't use this in #error, since it doesn't expand macros
+
+// Compile-time libsqlite version check
+#if SQLITE_VERSION_NUMBER < MIN_SUPPORTED_SQLITE_NUMBER
+#error libsqlite version too old. Minimum compatible version: 3.33.0
+#endif
+
 extern std::mutex dbCrit;
 extern sqlite3 *db;
 

src/main.cpp

@@ -98,6 +98,9 @@ void initsignals() {
 }
 
 int main() {
+    std::cout << "[INFO] OpenFusion v" GIT_VERSION << std::endl;
+    std::cout << "[INFO] Protocol version: " << PROTOCOL_VERSION << std::endl;
+
 #ifdef _WIN32
     WSADATA wsaData;
     if (WSAStartup(MAKEWORD(1, 1), &wsaData) != 0) {
@@ -105,15 +108,15 @@ int main() {
         exit(EXIT_FAILURE);
     }
 #endif
+
     initsignals();
     settings::init();
-
+    Database::init();
-    std::cout << "[INFO] OpenFusion v" GIT_VERSION << std::endl;
-    std::cout << "[INFO] Protocol version: " << PROTOCOL_VERSION << std::endl;
-    std::cout << "[INFO] Intializing Packet Managers..." << std::endl;
-
     Rand::init(getTime());
     TableData::init();
+
+    std::cout << "[INFO] Intializing Packet Managers..." << std::endl;
+
     PlayerManager::init();
     PlayerMovement::init();
     BuiltinCommands::init();
@@ -132,9 +135,10 @@ int main() {
     Email::init();
     Groups::init();
     Racing::init();
-    Database::open();
     Trading::init();
 
+    Database::open();
+
     switch (settings::EVENTMODE) {
     case 0: break; // no event
     case 1: std::cout << "[INFO] Event active. Hey, Hey It's Knishmas!" << std::endl; break;

src/servers/CNLoginServer.cpp

@@ -11,6 +11,7 @@
 std::map<CNSocket*, CNLoginData> CNLoginServer::loginSessions;
 
 CNLoginServer::CNLoginServer(uint16_t p) {
+    serverType = "login";
     port = p;
     pHandler = &CNLoginServer::handlePacket;
     init();
@@ -208,9 +209,12 @@ void CNLoginServer::login(CNSocket* sock, CNPacketData* data) {
     // send the resp in with original key
     sock->sendPacket(resp, P_LS2CL_REP_LOGIN_SUCC);
 
+    uint64_t defaultKey;
+    memcpy(&defaultKey, CNSocketEncryption::defaultKey, sizeof(defaultKey));
+
     // update keys
     sock->setEKey(CNSocketEncryption::createNewKey(resp.uiSvrTime, resp.iCharCount + 1, resp.iSlotNum + 1));
-    sock->setFEKey(CNSocketEncryption::createNewKey((uint64_t)(*(uint64_t*)&CNSocketEncryption::defaultKey[0]), login->iClientVerC, 1));
+    sock->setFEKey(CNSocketEncryption::createNewKey(defaultKey, login->iClientVerC, 1));
 
     DEBUGLOG(
         std::cout << "Login Server: Login success. Welcome " << userLogin << " [" << loginSessions[sock].userID << "]" << std::endl;

src/servers/CNShardServer.cpp

@@ -16,6 +16,7 @@ std::map<uint32_t, PacketHandler> CNShardServer::ShardPackets;
 std::list<TimerEvent> CNShardServer::Timers;
 
 CNShardServer::CNShardServer(uint16_t p) {
+    serverType = "shard";
     port = p;
     pHandler = &CNShardServer::handlePacket;
     REGISTER_SHARD_TIMER(keepAliveTimer, 4000);