feat: eliminate dependency on gfsdk_original.dll

It's no longer necessary to keep the original gfsdk.dll inside of the
game directory.

README.md

@@ -9,4 +9,4 @@ First of all, it redirects all of the game requests to a local server. Second of
 ## Setup
 You can get a prebuilt DLL for your game version in [releases](https://git.xeondev.com/LR/C/releases). If you don't want to use prebuilt binaries, you can compile it with `Zig 0.16.0-dev.2368`, running `zig build` will do the trick.
 
-Next, you have to go to the game's directory and find the `gfsdk.dll` file. You have to RENAME it to `gfsdk_original.dll`. Afterwards, you should place `gfsdk.dll` that you've got from this repository in the game's directory. That should be it, just run Endfield.exe. If a console with an ASCII art spawns, it works.
+Next, you have to go to the game's directory and replace the `gfsdk.dll` file with the one you've got from this repository. That should be it, just run Endfield.exe. If a console with an ASCII art spawns, it works.

src/proxy_exports.zig

@@ -1,173 +1,79 @@
 const std = @import("std");
-const windows = std.os.windows;
 
-pub var ptrGFSdkGetProtocolStatus: usize = undefined;
-pub var ptrGFSdkInit: usize = undefined;
-pub var ptrGFSdkInitLibrary: usize = undefined;
-pub var ptrGFSdkLogOut: usize = undefined;
-pub var ptrGFSdkLogin: usize = undefined;
-pub var ptrGFSdkOpenCustomerServiceCenter: usize = undefined;
-pub var ptrGFSdkOpenProfile: usize = undefined;
-pub var ptrGFSdkPayByPayment: usize = undefined;
-pub var ptrGFSdkQueryProductList: usize = undefined;
-pub var ptrGFSdkSetExtraConfig: usize = undefined;
-pub var ptrGFSdkSetLanguage: usize = undefined;
-pub var ptrGFSdkSetServerId: usize = undefined;
-pub var ptrGFSdkSetServerType: usize = undefined;
-pub var ptrGFSdkSetUserDataPath: usize = undefined;
-pub var ptrGFSdkShowAccountCenter: usize = undefined;
-pub var ptrGFSdkShowProtocolView: usize = undefined;
-pub var ptrGFSdkUnInit: usize = undefined;
-pub var ptrGFSdkUnInitLibrary: usize = undefined;
-
-pub fn link(against: windows.HMODULE) void {
-    inline for (@typeInfo(@This()).@"struct".decls) |decl| {
-        if (@TypeOf(@field(@This(), decl.name)) != usize) continue;
-
-        @field(@This(), decl.name) = @intFromPtr(windows.kernel32.GetProcAddress(against, decl.name[3..]) orelse null);
-    }
+pub export fn GFSdkGetProtocolStatus() callconv(.c) u32 {
+    return 0;
 }
 
-pub export fn GFSdkGetProtocolStatus() callconv(.naked) void {
-    asm volatile (
-        \\ jmp *%[addr]
-        :
-        : [addr] "r" (ptrGFSdkGetProtocolStatus),
-    );
+pub export fn GFSdkInit(
+    _: usize,
+    initCallback: *const fn (usize, usize) callconv(.c) void,
+    _: usize,
+    _: usize,
+) callconv(.c) u32 {
+    initCallback(0, 0);
+    return 3;
 }
 
-pub export fn GFSdkInit() callconv(.naked) u32 {
-    asm volatile (
-        \\ jmp *%[addr]
-        :
-        : [addr] "r" (ptrGFSdkInit),
-    );
+pub export fn GFSdkInitLibrary() callconv(.c) u32 {
+    return 1;
 }
 
-pub export fn GFSdkInitLibrary() callconv(.naked) u32 {
-    asm volatile (
-        \\ jmp *%[addr]
-        :
-        : [addr] "r" (ptrGFSdkInitLibrary),
-    );
+pub export fn GFSdkLogOut() callconv(.c) u32 {
+    return 0;
 }
 
-pub export fn GFSdkLogOut() callconv(.naked) u32 {
-    asm volatile (
-        \\ jmp *%[addr]
-        :
-        : [addr] "r" (ptrGFSdkLogOut),
-    );
+pub export fn GFSdkLogin() callconv(.c) u32 {
+    return 0;
 }
 
-pub export fn GFSdkLogin() callconv(.naked) u32 {
-    asm volatile (
-        \\ jmp *%[addr]
-        :
-        : [addr] "r" (ptrGFSdkLogin),
-    );
+pub export fn GFSdkOpenCustomerServiceCenter() callconv(.c) u32 {
+    return 0;
 }
 
-pub export fn GFSdkOpenCustomerServiceCenter() callconv(.naked) u32 {
-    asm volatile (
-        \\ jmp *%[addr]
-        :
-        : [addr] "r" (ptrGFSdkOpenCustomerServiceCenter),
-    );
+pub export fn GFSdkOpenProfile() callconv(.c) u32 {
+    return 0;
 }
 
-pub export fn GFSdkOpenProfile() callconv(.naked) u32 {
-    asm volatile (
-        \\ jmp *%[addr]
-        :
-        : [addr] "r" (ptrGFSdkOpenProfile),
-    );
+pub export fn GFSdkPayByPayment() callconv(.c) u32 {
+    return 0;
 }
 
-pub export fn GFSdkPayByPayment() callconv(.naked) u32 {
-    asm volatile (
-        \\ jmp *%[addr]
-        :
-        : [addr] "r" (ptrGFSdkPayByPayment),
-    );
+pub export fn GFSdkQueryProductList() callconv(.c) u32 {
+    return 0;
 }
 
-pub export fn GFSdkQueryProductList() callconv(.naked) u32 {
-    asm volatile (
-        \\ jmp *%[addr]
-        :
-        : [addr] "r" (ptrGFSdkQueryProductList),
-    );
+pub export fn GFSdkSetLanguage() callconv(.c) u32 {
+    return 0;
 }
 
-pub export fn GFSdkSetLanguage() callconv(.naked) u32 {
-    asm volatile (
-        \\ jmp *%[addr]
-        :
-        : [addr] "r" (ptrGFSdkSetLanguage),
-    );
+pub export fn GFSdkSetServerId() callconv(.c) u32 {
+    return 0;
 }
 
-pub export fn GFSdkSetServerId() callconv(.naked) u32 {
-    asm volatile (
-        \\ jmp *%[addr]
-        :
-        : [addr] "r" (ptrGFSdkSetServerId),
-    );
+pub export fn GFSdkSetServerType() callconv(.c) u32 {
+    return 0;
 }
 
-pub export fn GFSdkSetServerType() callconv(.naked) u32 {
-    asm volatile (
-        \\ jmp *%[addr]
-        :
-        : [addr] "r" (ptrGFSdkSetServerType),
-    );
+pub export fn GFSdkSetUserDataPath() callconv(.c) u32 {
+    return 0;
 }
 
-pub export fn GFSdkSetUserDataPath() callconv(.naked) u32 {
-    asm volatile (
-        \\ jmp *%[addr]
-        :
-        : [addr] "r" (ptrGFSdkSetUserDataPath),
-    );
+pub export fn GFSdkShowAccountCenter() callconv(.c) u32 {
+    return 0;
 }
 
-pub export fn GFSdkShowAccountCenter() callconv(.naked) u32 {
-    asm volatile (
-        \\ jmp *%[addr]
-        :
-        : [addr] "r" (ptrGFSdkShowAccountCenter),
-    );
+pub export fn GFSdkShowProtocolView() callconv(.c) u32 {
+    return 0;
 }
 
-pub export fn GFSdkShowProtocolView() callconv(.naked) u32 {
-    asm volatile (
-        \\ jmp *%[addr]
-        :
-        : [addr] "r" (ptrGFSdkShowProtocolView),
-    );
+pub export fn GFSdkUnInit() callconv(.c) u32 {
+    return 0;
 }
 
-pub export fn GFSdkUnInit() callconv(.naked) u32 {
-    asm volatile (
-        \\ jmp *%[addr]
-        :
-        : [addr] "r" (ptrGFSdkUnInit),
-    );
+pub export fn GFSdkUnInitLibrary() callconv(.c) u32 {
+    return 0;
 }
 
-pub export fn GFSdkUnInitLibrary() callconv(.naked) u32 {
-    asm volatile (
-        \\ jmp *%[addr]
-        :
-        : [addr] "r" (ptrGFSdkUnInitLibrary),
-    );
-}
-
-pub export fn GFSdkSetExtraConfig() callconv(.naked) void {
-    asm volatile (
-        \\ jmp *%[addr]
-        :
-        : [addr] "r" (ptrGFSdkSetExtraConfig),
-    );
+pub export fn GFSdkSetExtraConfig() callconv(.c) u32 {
+    return 0;
 }

src/root.zig

@@ -1,7 +1,10 @@
 const std = @import("std");
 const interceptor = @import("interceptor.zig");
 const Il2cpp = @import("Il2cpp.zig");
-const proxy_exports = @import("proxy_exports.zig");
+
+comptime {
+    _ = @import("proxy_exports.zig");
+}
 
 const windows = std.os.windows;
 const unicode = std.unicode;
@@ -157,10 +160,6 @@ const WebRequestPatch = struct {
 
 pub export fn DllMain(_: windows.HINSTANCE, reason: windows.DWORD, _: windows.LPVOID) callconv(.winapi) windows.BOOL {
     if (reason == DLL_PROCESS_ATTACH) {
-        if (windows.kernel32.LoadLibraryW(unicode.utf8ToUtf16LeStringLiteral("gfsdk_original.dll"))) |lib| {
-            proxy_exports.link(lib);
-        }
-
         const thread = std.Thread.spawn(.{}, onAttach, .{}) catch unreachable;
         thread.detach();
     }