patch exec

src/client/component/filesystem.cpp

@@ -9,11 +9,35 @@
 #include <utils/hook.hpp>
 #include <utils/string.hpp>
 
-namespace filesystem
+namespace game::filesystem
 {
-	namespace
+	file::file(std::string name)
+		: name_(std::move(name))
 	{
-		
+		char* buffer{};
+		const auto size = game::FS_ReadFile(this->name_.data(), &buffer);
+
+		if (size >= 0 && buffer)
+		{
+			this->valid_ = true;
+			this->buffer_.append(buffer, size);
+			game::FS_FreeFile(buffer);
+		}
+	}
+
+	bool file::exists() const
+	{
+		return this->valid_;
+	}
+
+	const std::string& file::get_buffer() const
+	{
+		return this->buffer_;
+	}
+
+	const std::string& file::get_name() const
+	{
+		return this->name_;
 	}
 
 	class component final : public component_interface
@@ -26,4 +50,4 @@ namespace filesystem
 	};
 }
 
-REGISTER_COMPONENT(filesystem::component)
+REGISTER_COMPONENT(game::filesystem::component)

src/client/component/filesystem.hpp

@@ -1,6 +1,19 @@
 #pragma once
 
-namespace filesystem
+namespace game::filesystem
 {
+	class file
+	{
+	public:
+		file(std::string name);
 
+		[[nodiscard]] bool exists() const;
+		[[nodiscard]] const std::string& get_buffer() const;
+		[[nodiscard]] const std::string& get_name() const;
+
+	private:
+		bool valid_ = false;
+		std::string name_;
+		std::string buffer_;
+	};
 }

src/client/component/patches.cpp

@@ -5,6 +5,7 @@
 #include "game/dvars.hpp"
 
 #include "fastfiles.hpp"
+#include "filesystem.hpp"
 #include "dvars.hpp"
 
 #include <utils/hook.hpp>
@@ -193,6 +194,18 @@ namespace patches
 			*checksum = dvar->checksum;
 			return true;
 		}
+
+		char* db_read_raw_file_stub(const char* filename, char* buf, const int size)
+		{
+			const auto file = game::filesystem::file(filename);
+			if (file.exists())
+			{
+				snprintf(buf, size, "%s\n", file.get_buffer().data());
+				return buf;
+			}
+
+			return game::DB_ReadRawFile(filename, buf, size);
+		}
 	}
 
 	class component final : public component_interface
@@ -229,6 +242,9 @@ namespace patches
 			utils::hook::set<uint8_t>(0xB0A9AC_b, 0xEB); // setclientdvar
 			utils::hook::set<uint8_t>(0xB0ACC8_b, 0xEB); // setclientdvars
 
+			// Allow executing custom cfg files with the "exec" command
+			utils::hook::call(0xB7CEF9_b, db_read_raw_file_stub);
+
 			// don't reset our fov
 			utils::hook::set<uint8_t>(0x8A6160_b, 0xC3);
 

src/client/game/symbols.hpp

@@ -56,8 +56,8 @@ namespace game
 	WEAK symbol<bool(std::int32_t, void(__cdecl*)(XAssetHeader, void*), const void*)> DB_EnumXAssets_FastFile{ 0xA76CE0 };
 	WEAK symbol<bool(XAssetType type, const char* name)> DB_IsXAssetDefault{ 0xA780D0 };
 	WEAK symbol<XAssetHeader(XAssetType type, const char* name, int allowCreateDefault)> DB_FindXAssetHeader{ 0xA76E00 };
-
 	WEAK symbol<bool(const char* zoneName)> DB_IsLocalized{ 0x3BC500 };
+	WEAK symbol<char* (const char* filename, char* buf, int size)> DB_ReadRawFile{ 0xA79E30 };
 
 	WEAK symbol<dvar_t* (const char* name, bool value,
 		unsigned int flags, const char* description)> Dvar_RegisterBool{ 0xCEB380 };
@@ -89,6 +89,8 @@ namespace game
 	WEAK symbol<unsigned int(const char* name)> Dvar_GenerateChecksum{ 0xCEA520 };
 	WEAK symbol<void(dvar_t* dvar, int value)> Dvar_SetInt{ 0xCED3D0 };
 
+	WEAK symbol<__int64(const char* qpath, char** buffer)> FS_ReadFile{ 0xCDE200 };
+	WEAK symbol<void(char* buffer)> FS_FreeFile{ 0xCDE1F0 };
 	WEAK symbol<void(int h, const char* fmt, ...)> FS_Printf{ 0xCDD1C0 };
 
 	WEAK symbol<const char* (int, int, int)> Key_KeynumToString{ 0x9A95E0 };