From 34a28c6fa04c5888c4e687c5e11da185613caa85 Mon Sep 17 00:00:00 2001
From: Jan200101 <sentrycraft123@gmail.com>
Date: Sun, 3 Dec 2023 20:56:17 +0100
Subject: stash: console hook

---
 src/CMakeLists.txt                      |  2 ++
 src/hook.cpp                            | 17 +++++++++++++++++
 src/hook.h                              |  6 ++++++
 src/init.cpp                            | 10 ++++++++--
 src/internal/engine/consoledialog.h     | 16 ++++++++++++++++
 src/internal/engine/gameconsole.h       |  9 +++++++++
 src/internal/engine/gameconsoledialog.h |  7 +++++++
 src/internal/engine/public/icvar.h      | 15 +++++++++++++++
 8 files changed, 80 insertions(+), 2 deletions(-)
 create mode 100644 src/hook.cpp
 create mode 100644 src/hook.h
 create mode 100644 src/internal/engine/consoledialog.h
 create mode 100644 src/internal/engine/gameconsole.h
 create mode 100644 src/internal/engine/gameconsoledialog.h
 create mode 100644 src/internal/engine/public/icvar.h

diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 0cf8952..6ebae81 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -17,6 +17,8 @@ add_library(SouthRPC SHARED
     "${CMAKE_CURRENT_SOURCE_DIR}/handler.h"
     "${CMAKE_CURRENT_SOURCE_DIR}/helper.cpp"
     "${CMAKE_CURRENT_SOURCE_DIR}/helper.h"
+    "${CMAKE_CURRENT_SOURCE_DIR}/hook.cpp"
+    "${CMAKE_CURRENT_SOURCE_DIR}/hook.h"
     "${CMAKE_CURRENT_SOURCE_DIR}/http_server.cpp"
     "${CMAKE_CURRENT_SOURCE_DIR}/http_server.h"
     "${CMAKE_CURRENT_SOURCE_DIR}/rpc_server.cpp"
diff --git a/src/hook.cpp b/src/hook.cpp
new file mode 100644
index 0000000..484ea76
--- /dev/null
+++ b/src/hook.cpp
@@ -0,0 +1,17 @@
+#include "internal/engine/gameconsole.h"
+
+#include "ns_plugin.h"
+
+extern "C" {
+	typedef void* (*CreateInterface)(const char *pName, int *pReturnCode);
+}
+
+void hook_console_print(HMODULE dllPtr)
+{
+	assert(dllPtr);
+
+	CreateInterface pCreateInterface = (CreateInterface)GetProcAddress(dllPtr, "CreateInterface");
+	assert(pCreateInterface);
+
+	CGameConsole* pGameConsole = (CGameConsole*)pCreateInterface("GameConsole004", NULL);
+}
diff --git a/src/hook.h b/src/hook.h
new file mode 100644
index 0000000..f05498c
--- /dev/null
+++ b/src/hook.h
@@ -0,0 +1,6 @@
+#ifndef HOOK_H
+#define HOOK_H
+
+void hook_console_print(HMODULE dllPtr);
+
+#endif
\ No newline at end of file
diff --git a/src/init.cpp b/src/init.cpp
index 36aea76..08ce034 100644
--- a/src/init.cpp
+++ b/src/init.cpp
@@ -2,6 +2,7 @@
 #include "internal/logging.h"
 
 #include "plugin.h"
+#include "hook.h"
 
 Plugin* plugin = nullptr;
 
@@ -24,10 +25,15 @@ void PLUGIN_DEINIT()
 }
 
 extern "C" __declspec(dllexport)
-void PLUGIN_INFORM_DLL_LOAD(const char* dll, PluginEngineData* data, void* dllPtr) {
+void PLUGIN_INFORM_DLL_LOAD(const char* dll, PluginEngineData* data, void* dllPtr)
+{
     assert(plugin);
 
-    if (!strcmp(dll, "engine.dll"))
+    if (!strcmp(dll, "client.dll"))
+    {
+        hook_console_print((HMODULE)dllPtr);
+    }
+    else if (!strcmp(dll, "engine.dll"))
     {
         plugin->LoadEngineData(data, (HMODULE)dllPtr);
         plugin->StartServer();
diff --git a/src/internal/engine/consoledialog.h b/src/internal/engine/consoledialog.h
new file mode 100644
index 0000000..b256c16
--- /dev/null
+++ b/src/internal/engine/consoledialog.h
@@ -0,0 +1,16 @@
+
+#include "internal/engine/public/icvar.h"
+
+typedef struct CConsolePanel {
+    // has no own vtable
+
+    char padding[0x2B4];
+    IConsoleDisplayFunc* _derived2;
+} CConsolePanel;
+
+typedef struct CConsoleDialog {
+    void* vtable;
+
+    char padding[0x394]; // some vgui stuff we don't care about
+    CConsolePanel* m_pConsolePanel;
+} CConsoleDialog;
diff --git a/src/internal/engine/gameconsole.h b/src/internal/engine/gameconsole.h
new file mode 100644
index 0000000..ce8f957
--- /dev/null
+++ b/src/internal/engine/gameconsole.h
@@ -0,0 +1,9 @@
+
+#include "internal/engine/gameconsoledialog.h"
+
+typedef struct CGameConsole {
+    void* vtable;
+
+    bool m_bInitialized;
+    CGameConsoleDialog* m_pConsole;
+} CGameConsole;
diff --git a/src/internal/engine/gameconsoledialog.h b/src/internal/engine/gameconsoledialog.h
new file mode 100644
index 0000000..f179f22
--- /dev/null
+++ b/src/internal/engine/gameconsoledialog.h
@@ -0,0 +1,7 @@
+
+#include "internal/engine/consoledialog.h"
+
+typedef struct CGameConsoleDialog {
+    void* vtable;
+    CConsoleDialog _derived;
+} CGameConsoleDialog;
diff --git a/src/internal/engine/public/icvar.h b/src/internal/engine/public/icvar.h
new file mode 100644
index 0000000..e72c64b
--- /dev/null
+++ b/src/internal/engine/public/icvar.h
@@ -0,0 +1,15 @@
+// derived from https://github.com/ValveSoftware/source-sdk-2013/blob/0d8dceea4310fde5706b3ce1c70609d72a38efdf/mp/src/public/icvar.h
+
+typedef struct IConsoleDisplayFunc {
+    struct {
+        //virtual void ColorPrint( const Color& clr, const char *pMessage ) = 0;
+        void* ColorPrint;
+
+        //virtual void Print( const char *pMessage ) = 0;
+        void (*Print)(struct IConsoleDisplayFunc* instance, const char* pMessage);
+
+        //virtual void DPrint( const char *pMessage ) = 0;
+        void (*DPrint)(struct IConsoleDisplayFunc* instance, const char* pMessage);
+    }* vtable;
+
+} IConsoleDisplayFunc;
-- 
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