feat: replace hosts file with DLL injection hook
Adds openfut-hook/, a Windows DLL (cdylib, x86_64-pc-windows-gnu) that patches the IAT of FIFA 23 at load time to redirect getaddrinfo calls for fut.ea.com / utas.*.fut.ea.com to 127.0.0.1, sending all FUT traffic to the local bridge — no /etc/hosts changes needed. Deployment: the launcher copies openfut_hook.dll into the FIFA 23 game folder as version.dll (a DLL FIFA loads but delegates to system). Proton picks up the local copy automatically when you set: WINEDLLOVERRIDES="version=n,b" %command% in Steam launch options. Also updates cert install to try the Wine/Proton cert store (wine certutil) before falling back to the Linux system CA store, and removes all hosts file code from setup.rs / app.rs. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
funman300
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[target.x86_64-pc-windows-gnu]
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linker = "x86_64-w64-mingw32-gcc"
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ar = "x86_64-w64-mingw32-ar"
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Generated
+83
@@ -0,0 +1,83 @@
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# This file is automatically @generated by Cargo.
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# It is not intended for manual editing.
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version = 4
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[[package]]
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name = "openfut-hook"
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version = "0.1.0"
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dependencies = [
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"windows-sys",
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]
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[[package]]
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name = "windows-sys"
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version = "0.59.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "1e38bc4d79ed67fd075bcc251a1c39b32a1776bbe92e5bef1f0bf1f8c531853b"
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dependencies = [
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"windows-targets",
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]
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[[package]]
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name = "windows-targets"
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version = "0.52.6"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "9b724f72796e036ab90c1021d4780d4d3d648aca59e491e6b98e725b84e99973"
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dependencies = [
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"windows_aarch64_gnullvm",
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"windows_aarch64_msvc",
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"windows_i686_gnu",
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"windows_i686_gnullvm",
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"windows_i686_msvc",
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"windows_x86_64_gnu",
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"windows_x86_64_gnullvm",
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"windows_x86_64_msvc",
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]
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[[package]]
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name = "windows_aarch64_gnullvm"
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version = "0.52.6"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "32a4622180e7a0ec044bb555404c800bc9fd9ec262ec147edd5989ccd0c02cd3"
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[[package]]
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name = "windows_aarch64_msvc"
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version = "0.52.6"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "09ec2a7bb152e2252b53fa7803150007879548bc709c039df7627cabbd05d469"
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[[package]]
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name = "windows_i686_gnu"
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version = "0.52.6"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "8e9b5ad5ab802e97eb8e295ac6720e509ee4c243f69d781394014ebfe8bbfa0b"
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[[package]]
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name = "windows_i686_gnullvm"
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version = "0.52.6"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "0eee52d38c090b3caa76c563b86c3a4bd71ef1a819287c19d586d7334ae8ed66"
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[[package]]
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name = "windows_i686_msvc"
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version = "0.52.6"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "240948bc05c5e7c6dabba28bf89d89ffce3e303022809e73deaefe4f6ec56c66"
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[[package]]
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name = "windows_x86_64_gnu"
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version = "0.52.6"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "147a5c80aabfbf0c7d901cb5895d1de30ef2907eb21fbbab29ca94c5b08b1a78"
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[[package]]
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name = "windows_x86_64_gnullvm"
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version = "0.52.6"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "24d5b23dc417412679681396f2b49f3de8c1473deb516bd34410872eff51ed0d"
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[[package]]
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name = "windows_x86_64_msvc"
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version = "0.52.6"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "589f6da84c646204747d1270a2a5661ea66ed1cced2631d546fdfb155959f9ec"
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@@ -0,0 +1,21 @@
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[package]
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name = "openfut-hook"
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version = "0.1.0"
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edition = "2021"
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[lib]
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crate-type = ["cdylib"]
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[dependencies]
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windows-sys = { version = "0.59", features = [
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"Win32_Foundation",
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"Win32_System_LibraryLoader",
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"Win32_System_Memory",
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"Win32_System_SystemServices",
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"Win32_Networking_WinSock",
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] }
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[profile.release]
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opt-level = "s"
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strip = true
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panic = "abort"
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@@ -0,0 +1,44 @@
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/// Network hooks — redirect EA FUT hostnames to localhost.
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use std::{ffi::CStr, sync::OnceLock};
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use windows_sys::Win32::Networking::WinSock::{ADDRINFOA, getaddrinfo as sys_getaddrinfo};
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const INTERCEPT: &[&str] = &[
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"fut.ea.com",
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"utas.mob.v4.fut.ea.com",
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"utas.s2.fut.ea.com",
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];
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type GetaddrinfoFn = unsafe extern "system" fn(
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*const u8,
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*const u8,
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*const ADDRINFOA,
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*mut *mut ADDRINFOA,
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) -> i32;
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static REAL: OnceLock<GetaddrinfoFn> = OnceLock::new();
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pub fn set_real(f: GetaddrinfoFn) {
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let _ = REAL.set(f);
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}
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pub unsafe extern "system" fn hooked_getaddrinfo(
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node_name: *const u8,
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service_name: *const u8,
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hints: *const ADDRINFOA,
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result: *mut *mut ADDRINFOA,
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) -> i32 {
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if !node_name.is_null() {
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if let Ok(host) = CStr::from_ptr(node_name as *const i8).to_str() {
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for target in INTERCEPT {
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if host.eq_ignore_ascii_case(target) {
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let local = b"127.0.0.1\0";
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let real = REAL.get().copied().unwrap_or(sys_getaddrinfo);
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return real(local.as_ptr(), service_name, hints, result);
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}
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}
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}
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}
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let real = REAL.get().copied().unwrap_or(sys_getaddrinfo);
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real(node_name, service_name, hints, result)
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}
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@@ -0,0 +1,135 @@
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/// IAT (Import Address Table) patching.
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///
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/// We define the PE structs ourselves rather than pulling in windows-sys PE
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/// headers (which are in a different crate / feature path).
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use windows_sys::Win32::{
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Foundation::HMODULE,
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System::{
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LibraryLoader::{GetModuleHandleA, GetProcAddress},
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Memory::{VirtualProtect, PAGE_EXECUTE_READWRITE},
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},
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};
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// ── Minimal PE struct definitions ─────────────────────────────────────────────
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#[repr(C)]
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struct ImageDosHeader {
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e_magic: u16,
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_pad: [u16; 29],
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e_lfanew: i32,
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}
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#[repr(C)]
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struct ImageFileHeader {
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machine: u16,
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number_of_sections: u16,
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time_date_stamp: u32,
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pointer_to_symbol_table: u32,
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number_of_symbols: u32,
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size_of_optional_header: u16,
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characteristics: u16,
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}
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#[repr(C)]
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struct ImageDataDirectory {
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virtual_address: u32,
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size: u32,
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}
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#[repr(C)]
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struct ImageOptionalHeader64 {
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magic: u16,
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_pad: [u8; 106],
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data_directory: [ImageDataDirectory; 16],
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}
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#[repr(C)]
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struct ImageNtHeaders64 {
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signature: u32,
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file_header: ImageFileHeader,
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optional_header: ImageOptionalHeader64,
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}
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#[repr(C)]
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struct ImageImportDescriptor {
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original_first_thunk: u32,
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time_date_stamp: u32,
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forwarder_chain: u32,
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name: u32,
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first_thunk: u32,
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}
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// ── IAT patching ──────────────────────────────────────────────────────────────
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/// Replace every IAT slot in the main module that currently holds
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/// `original_fn` with `hook_fn`.
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///
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/// # Safety
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/// Caller must ensure hook_fn has the same calling convention and signature.
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pub unsafe fn patch_iat(original_fn: *const (), hook_fn: *const ()) -> usize {
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let module = GetModuleHandleA(std::ptr::null());
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patch_module(module, original_fn, hook_fn)
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}
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unsafe fn patch_module(
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module: HMODULE,
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original_fn: *const (),
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hook_fn: *const (),
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) -> usize {
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if module.is_null() {
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return 0;
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}
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let base = module as usize;
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let dos = base as *const ImageDosHeader;
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if (*dos).e_magic != 0x5A4D {
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return 0;
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}
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let nt = (base + (*dos).e_lfanew as usize) as *const ImageNtHeaders64;
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let import_rva = (*nt).optional_header.data_directory[1].virtual_address as usize;
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if import_rva == 0 {
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return 0;
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}
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let mut desc = (base + import_rva) as *const ImageImportDescriptor;
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let mut count = 0usize;
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while (*desc).name != 0 {
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let ft = (*desc).first_thunk as usize;
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let iat_slot = (base + ft) as *mut usize;
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let mut i = 0usize;
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loop {
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let val = *iat_slot.add(i);
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if val == 0 {
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break;
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}
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if val == original_fn as usize {
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let target = iat_slot.add(i) as *const std::ffi::c_void;
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let mut old: u32 = 0;
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VirtualProtect(target, std::mem::size_of::<usize>(), PAGE_EXECUTE_READWRITE, &mut old);
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*iat_slot.add(i) = hook_fn as usize;
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VirtualProtect(target, std::mem::size_of::<usize>(), old, &mut old);
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count += 1;
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}
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i += 1;
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}
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desc = desc.add(1);
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}
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count
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}
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/// Resolve the address of an exported function from an already-loaded DLL.
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pub unsafe fn resolve(dll: &[u8], fn_name: &[u8]) -> *const () {
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let module = GetModuleHandleA(dll.as_ptr());
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if module.is_null() {
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return std::ptr::null();
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}
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match GetProcAddress(module, fn_name.as_ptr()) {
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Some(f) => f as *const (),
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None => std::ptr::null(),
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}
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}
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@@ -0,0 +1,37 @@
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mod hooks;
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mod iat;
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use windows_sys::Win32::{
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Foundation::{BOOL, HMODULE, TRUE},
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System::SystemServices::DLL_PROCESS_ATTACH,
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Networking::WinSock::ADDRINFOA,
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};
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#[no_mangle]
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pub unsafe extern "system" fn DllMain(
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_module: HMODULE,
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reason: u32,
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_reserved: *mut (),
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) -> BOOL {
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if reason == DLL_PROCESS_ATTACH {
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install_hooks();
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}
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TRUE
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}
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unsafe fn install_hooks() {
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let real_ptr = iat::resolve(b"ws2_32.dll\0", b"getaddrinfo\0");
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if real_ptr.is_null() {
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return;
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}
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let real_fn: unsafe extern "system" fn(
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*const u8,
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*const u8,
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*const ADDRINFOA,
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*mut *mut ADDRINFOA,
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) -> i32 = std::mem::transmute(real_ptr);
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hooks::set_real(real_fn);
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iat::patch_iat(real_ptr, hooks::hooked_getaddrinfo as *const ());
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}
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