Major IPC Rework + Added Socket2

IPC is now done with UNIX sockets instead of TCP ones (security!), and added Socket2, see Wiki.

src/managers/EventManager.cpp

@@ -0,0 +1,129 @@
+#include "EventManager.hpp"
+
+#include <errno.h>
+#include <fcntl.h>
+#include <netinet/in.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/socket.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <sys/un.h>
+#include <unistd.h>
+
+#include <string>
+
+CEventManager::CEventManager() {
+}
+
+void CEventManager::startThread() {
+    std::thread([&]() {
+        const auto SOCKET = socket(AF_UNIX, SOCK_STREAM, 0);
+
+        if (SOCKET < 0) {
+            Debug::log(ERR, "Couldn't start the Hyprland Socket 2. (1) IPC will not work.");
+            return;
+        }
+
+        unlink("/tmp/hypr/.socket2.sock");
+
+        sockaddr_un SERVERADDRESS = {.sun_family = AF_UNIX};
+        strcpy(SERVERADDRESS.sun_path, "/tmp/hypr/.socket2.sock");
+
+        bind(SOCKET, (sockaddr*)&SERVERADDRESS, SUN_LEN(&SERVERADDRESS));
+
+        // 10 max queued.
+        listen(SOCKET, 10);
+
+        char readBuf[1024] = {0};
+
+        sockaddr_in clientAddress;
+        socklen_t clientSize = sizeof(clientAddress);
+
+        Debug::log(LOG, "Hypr socket 2 started.");
+
+        // set the socket nonblock
+        int flags = fcntl(SOCKET, F_GETFL, 0);
+        fcntl(SOCKET, F_SETFL, flags | O_NONBLOCK);
+
+        while (1) {
+            m_bCanWriteEventQueue = true;
+
+            const auto ACCEPTEDCONNECTION = accept(SOCKET, (sockaddr*)&clientAddress, &clientSize);
+
+            if (ACCEPTEDCONNECTION > 0) {
+                // new connection!
+                m_dAcceptedSocketFDs.push_back(ACCEPTEDCONNECTION);
+
+                int flagsNew = fcntl(ACCEPTEDCONNECTION, F_GETFL, 0);
+                fcntl(ACCEPTEDCONNECTION, F_SETFL, flagsNew | O_NONBLOCK);
+
+                Debug::log(LOG, "Socket 2 accepted a new client at FD %d", ACCEPTEDCONNECTION);
+            }
+
+            // pong if all FDs valid
+            for (auto it = m_dAcceptedSocketFDs.begin(); it != m_dAcceptedSocketFDs.end();) {
+                auto sizeRead = recv(*it, &readBuf, 1024, 0);
+
+                if (sizeRead != 0) {
+                    it++;
+                    continue;
+                }
+
+                // invalid!
+                Debug::log(LOG, "Removed invalid socket (2) FD: %d", *it);
+                it = m_dAcceptedSocketFDs.erase(it);
+            }
+
+            // valid FDs, check the queue
+            // don't do anything if main thread is writing to the eventqueue
+            while (!m_bCanReadEventQueue) {
+                std::this_thread::sleep_for(std::chrono::milliseconds(1));
+            }
+
+            // if we got here, we'll be reading the queue, let's disallow writing
+            m_bCanWriteEventQueue = false;
+
+            if (m_dQueuedEvents.empty()){ // if queue empty, sleep and ignore
+                std::this_thread::sleep_for(std::chrono::milliseconds(1));
+                continue;
+            }
+
+            // write all queued events
+            for (auto& ev : m_dQueuedEvents) {
+                std::string eventString = ev.event + ">>" + ev.data;
+                for (auto& fd : m_dAcceptedSocketFDs) {
+                    write(fd, eventString.c_str(), eventString.length());
+                }
+            }
+
+            m_dQueuedEvents.clear();
+
+            m_bCanWriteEventQueue = true;
+
+            std::this_thread::sleep_for(std::chrono::milliseconds(1));
+        }
+
+        close(SOCKET);
+    }).detach();
+}
+
+void CEventManager::postEvent(const SHyprIPCEvent event) {
+
+    m_bCanReadEventQueue = false;
+    if (!m_bCanWriteEventQueue) {
+        // if we can't write rn, make a thread to write whenever possible, don't block calling events.
+        std::thread([&](const SHyprIPCEvent ev) {
+            while(!m_bCanWriteEventQueue) {
+                std::this_thread::sleep_for(std::chrono::microseconds(200));
+            }
+
+            m_dQueuedEvents.push_back(ev);
+            m_bCanReadEventQueue = true;
+        }, event).detach();
+    } else {
+        m_dQueuedEvents.push_back(event);
+        m_bCanReadEventQueue = true;
+    }
+}

src/managers/EventManager.hpp

@@ -0,0 +1,30 @@
+#pragma once
+#include <deque>
+#include <fstream>
+
+#include "../defines.hpp"
+#include "../helpers/MiscFunctions.hpp"
+
+struct SHyprIPCEvent {
+    std::string event;
+    std::string data;
+};
+
+class CEventManager {
+public:
+    CEventManager();
+
+    void postEvent(const SHyprIPCEvent event);
+
+    void startThread();
+
+private:
+
+    bool m_bCanReadEventQueue = true;
+    bool m_bCanWriteEventQueue = true;
+    std::deque<SHyprIPCEvent> m_dQueuedEvents;
+
+    std::deque<int> m_dAcceptedSocketFDs;
+};
+
+inline std::unique_ptr<CEventManager> g_pEventManager;

src/managers/InputManager.cpp

@@ -89,6 +89,9 @@ void CInputManager::mouseMoveUnified(uint32_t time, bool refocus) {
         // set active workspace and deactivate all other in wlr
         g_pCompositor->deactivateAllWLRWorkspaces(g_pCompositor->getWorkspaceByID(PMONITOR->activeWorkspace)->m_pWlrHandle);
         wlr_ext_workspace_handle_v1_set_active(g_pCompositor->getWorkspaceByID(PMONITOR->activeWorkspace)->m_pWlrHandle, true);
+
+        // event
+        g_pEventManager->postEvent(SHyprIPCEvent("workspace", g_pCompositor->getWorkspaceByID(PMONITOR->activeWorkspace)->m_szName));
     }
 
     Vector2D surfaceCoords;

src/managers/KeybindManager.cpp

@@ -183,6 +183,8 @@ void CKeybindManager::changeworkspace(std::string args) {
     if (g_pCompositor->getWorkspaceByID(workspaceToChangeTo)) {
         const auto PMONITOR = g_pCompositor->getMonitorFromID(g_pCompositor->getWorkspaceByID(workspaceToChangeTo)->m_iMonitorID);
 
+        const auto PWORKSPACETOCHANGETO = g_pCompositor->getWorkspaceByID(workspaceToChangeTo);
+
         // if it's not visible, make it visible.
         if (!g_pCompositor->isWorkspaceVisible(workspaceToChangeTo)) {
             const auto OLDWORKSPACEID = PMONITOR->activeWorkspace;
@@ -205,7 +207,7 @@ void CKeybindManager::changeworkspace(std::string args) {
             g_pCompositor->getWorkspaceByID(OLDWORKSPACEID)->startAnim(false, ANIMTOLEFT);
 
             // start anim on new workspace
-            g_pCompositor->getWorkspaceByID(workspaceToChangeTo)->startAnim(true, ANIMTOLEFT);
+            PWORKSPACETOCHANGETO->startAnim(true, ANIMTOLEFT);
         }
            
 
@@ -219,8 +221,8 @@ void CKeybindManager::changeworkspace(std::string args) {
         g_pCompositor->focusWindow(g_pCompositor->getFirstWindowOnWorkspace(workspaceToChangeTo));
 
         // set active and deactivate all other in wlr
-        g_pCompositor->deactivateAllWLRWorkspaces(g_pCompositor->getWorkspaceByID(workspaceToChangeTo)->m_pWlrHandle);
-        wlr_ext_workspace_handle_v1_set_active(g_pCompositor->getWorkspaceByID(workspaceToChangeTo)->m_pWlrHandle, true);
+        g_pCompositor->deactivateAllWLRWorkspaces(PWORKSPACETOCHANGETO->m_pWlrHandle);
+        wlr_ext_workspace_handle_v1_set_active(PWORKSPACETOCHANGETO->m_pWlrHandle, true);
 
         Debug::log(LOG, "Changed to workspace %i", workspaceToChangeTo);
 
@@ -230,6 +232,10 @@ void CKeybindManager::changeworkspace(std::string args) {
         // mark the monitor dirty
         g_pHyprRenderer->damageMonitor(PMONITOR);
 
+        // Event
+        if (!m_bSuppressWorkspaceChangeEvents)
+            g_pEventManager->postEvent(SHyprIPCEvent("workspace", PWORKSPACETOCHANGETO->m_szName));
+
         return;
     }
 
@@ -273,6 +279,10 @@ void CKeybindManager::changeworkspace(std::string args) {
     // focus (clears the last)
     g_pInputManager->refocus();
 
+    // Event
+    if (!m_bSuppressWorkspaceChangeEvents)
+        g_pEventManager->postEvent(SHyprIPCEvent("workspace", PWORKSPACE->m_szName));
+
     Debug::log(LOG, "Changed to workspace %i", workspaceToChangeTo);
 }
 
@@ -376,6 +386,8 @@ void CKeybindManager::moveActiveToWorkspaceSilent(std::string args) {
     const auto POLDWORKSPACEONMON = g_pCompositor->getWorkspaceByID(OLDWORKSPACEIDONMONITOR);
     const auto POLDWORKSPACEIDRETURN = g_pCompositor->getWorkspaceByID(OLDWORKSPACEIDRETURN);
 
+    m_bSuppressWorkspaceChangeEvents = true;
+
     moveActiveToWorkspace(args);
 
     PWORKSPACE = g_pCompositor->getWorkspaceByID(workspaceToMoveTo);
@@ -392,6 +404,8 @@ void CKeybindManager::moveActiveToWorkspaceSilent(std::string args) {
 
     POLDWORKSPACEONMON->m_vRenderOffset.setValueAndWarp(Vector2D(0, 0));
     POLDWORKSPACEONMON->m_fAlpha.setValueAndWarp(255.f);
+
+    m_bSuppressWorkspaceChangeEvents = false;
 }
 
 void CKeybindManager::moveFocusTo(std::string args) {

src/managers/KeybindManager.hpp

@@ -30,6 +30,8 @@ private:
 
     bool                handleInternalKeybinds(xkb_keysym_t);
 
+    inline static bool  m_bSuppressWorkspaceChangeEvents = false;
+
     // -------------- Dispatchers -------------- //
     static void         killActive(std::string);
     static void         spawn(std::string);