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|
use std::mem;
use std::path::Path;
use std::ptr;
use std::{env, ops::Deref};
use std::{error::Error, process};
use mem::size_of_val;
use winapi::um::{
jobapi2::{AssignProcessToJobObject, SetInformationJobObject},
processthreadsapi::{GetExitCodeProcess, ResumeThread},
synchapi::WaitForSingleObject,
winbase::CreateJobObjectA,
winnt::{
JobObjectExtendedLimitInformation, HANDLE, JOBOBJECT_EXTENDED_LIMIT_INFORMATION,
JOB_OBJECT_LIMIT_KILL_ON_JOB_CLOSE,
},
};
use winapi::um::winbase::{INFINITE, WAIT_FAILED};
static REDIRECT_DLL: &'static str = "zluda_redirect.dll";
static ZLUDA_DLL: &'static str = "nvcuda.dll";
include!("../../zluda_redirect/src/payload_guid.rs");
pub fn main_impl() -> Result<(), Box<dyn Error>> {
let args = env::args().collect::<Vec<_>>();
if args.len() <= 1 {
print_help_and_exit();
}
let injector_path = env::current_exe()?;
let injector_dir = injector_path.parent().unwrap();
let redirect_path = create_redirect_path(injector_dir);
let (mut inject_path, cmd) = create_inject_path(&args[1..], injector_dir);
let mut cmd_line = construct_command_line(cmd);
let mut startup_info = unsafe { mem::zeroed::<detours_sys::_STARTUPINFOW>() };
let mut proc_info = unsafe { mem::zeroed::<detours_sys::_PROCESS_INFORMATION>() };
os_call!(
detours_sys::DetourCreateProcessWithDllExW(
ptr::null(),
cmd_line.as_mut_ptr(),
ptr::null_mut(),
ptr::null_mut(),
0,
0,
ptr::null_mut(),
ptr::null(),
&mut startup_info as *mut _,
&mut proc_info as *mut _,
redirect_path.as_ptr() as *const i8,
Option::None
),
|x| x != 0
);
kill_child_on_process_exit(proc_info.hProcess)?;
os_call!(
detours_sys::DetourCopyPayloadToProcess(
proc_info.hProcess,
&PAYLOAD_GUID,
inject_path.as_mut_ptr() as *mut _,
(inject_path.len() * mem::size_of::<u16>()) as u32
),
|x| x != 0
);
os_call!(ResumeThread(proc_info.hThread), |x| x as i32 != -1);
os_call!(WaitForSingleObject(proc_info.hProcess, INFINITE), |x| x
!= WAIT_FAILED);
let mut child_exit_code: u32 = 0;
os_call!(
GetExitCodeProcess(proc_info.hProcess, &mut child_exit_code as *mut _),
|x| x != 0
);
process::exit(child_exit_code as i32)
}
fn kill_child_on_process_exit(child: HANDLE) -> Result<(), Box<dyn Error>> {
let job_handle = os_call!(CreateJobObjectA(ptr::null_mut(), ptr::null()), |x| x
!= ptr::null_mut());
let mut info = unsafe { mem::zeroed::<JOBOBJECT_EXTENDED_LIMIT_INFORMATION>() };
info.BasicLimitInformation.LimitFlags = JOB_OBJECT_LIMIT_KILL_ON_JOB_CLOSE;
os_call!(
SetInformationJobObject(
job_handle,
JobObjectExtendedLimitInformation,
&mut info as *mut _ as *mut _,
size_of_val(&info) as u32
),
|x| x != 0
);
os_call!(AssignProcessToJobObject(job_handle, child), |x| x != 0);
Ok(())
}
fn print_help_and_exit() -> ! {
let current_exe = env::current_exe().unwrap();
let exe_name = current_exe.file_name().unwrap().to_string_lossy();
println!(
"USAGE:
{0} -- <EXE> [ARGS]...
{0} <DLL> -- <EXE> [ARGS]...
ARGS:
<DLL> DLL to ne injected instead of system nvcuda.dll, if not provided
will use nvcuda.dll from the directory where {0} is located
<EXE> Path to the executable to be injected with <DLL>
<ARGS>... Arguments that will be passed to <EXE>
",
exe_name
);
process::exit(1)
}
// Adapted from https://docs.microsoft.com/en-us/archive/blogs/twistylittlepassagesallalike/everyone-quotes-command-line-arguments-the-wrong-way
fn construct_command_line(args: &[String]) -> Vec<u16> {
let mut cmd_line = Vec::new();
let args_len = args.len();
for (idx, arg) in args.iter().enumerate() {
if !arg.contains(&[' ', '\t', '\n', '\u{2B7F}', '\"'][..]) {
cmd_line.extend(arg.encode_utf16());
} else {
cmd_line.push('"' as u16); // "
let mut char_iter = arg.chars().peekable();
loop {
let mut current = char_iter.next();
let mut backslashes = 0;
match current {
Some('\\') => {
backslashes = 1;
while let Some('\\') = char_iter.peek() {
backslashes += 1;
char_iter.next();
}
current = char_iter.next();
}
_ => {}
}
match current {
None => {
for _ in 0..(backslashes * 2) {
cmd_line.push('\\' as u16);
}
break;
}
Some('"') => {
for _ in 0..(backslashes * 2 + 1) {
cmd_line.push('\\' as u16);
}
cmd_line.push('"' as u16);
}
Some(c) => {
for _ in 0..backslashes {
cmd_line.push('\\' as u16);
}
let mut temp = [0u16; 2];
cmd_line.extend(&*c.encode_utf16(&mut temp));
}
}
}
cmd_line.push('"' as u16);
}
if idx < args_len - 1 {
cmd_line.push(' ' as u16);
}
}
cmd_line.push(0);
cmd_line
}
fn create_redirect_path(injector_dir: &Path) -> Vec<u8> {
let mut injector_dir = injector_dir.to_path_buf();
injector_dir.push(REDIRECT_DLL);
let mut result = injector_dir.to_string_lossy().into_owned().into_bytes();
result.push(0);
result
}
fn create_inject_path<'a>(args: &'a [String], injector_dir: &Path) -> (Vec<u16>, &'a [String]) {
if args.get(0).map(Deref::deref) == Some("--") {
let mut injector_dir = injector_dir.to_path_buf();
injector_dir.push(ZLUDA_DLL);
let mut result = injector_dir
.to_string_lossy()
.as_ref()
.encode_utf16()
.collect::<Vec<_>>();
result.push(0);
(result, &args[1..])
} else if args.get(1).map(Deref::deref) == Some("--") {
let mut dll_path = args[0].encode_utf16().collect::<Vec<_>>();
dll_path.push(0);
(dll_path, &args[2..])
} else {
print_help_and_exit()
}
}
|
