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rand number

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This commit is contained in:
ssrlive 2023-09-23 21:57:00 +08:00
parent bdb7bec062
commit 4710e32873
2 changed files with 5 additions and 23 deletions
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26
src/wintuninterface.rs
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@ -13,29 +13,11 @@ use std::{
sync::Arc,
vec::Vec,
};
use windows::{
core::PCWSTR,
Win32::{
Security::Cryptography::{CryptAcquireContextW, CryptGenRandom, CryptReleaseContext, PROV_RSA_FULL},
Storage::FileSystem::FILE_FLAG_OVERLAPPED,
},
};
fn generate_random_bytes(len: usize) -> Result<Vec<u8>, windows::core::Error> {
let mut buf = vec![0u8; len];
unsafe {
let mut h_prov = 0_usize;
let null = PCWSTR::null();
CryptAcquireContextW(&mut h_prov, null, null, PROV_RSA_FULL, 0)?;
CryptGenRandom(h_prov, &mut buf)?;
CryptReleaseContext(h_prov, 0)?;
};
Ok(buf)
}
use windows::Win32::Storage::FileSystem::FILE_FLAG_OVERLAPPED;
fn server() -> io::Result<(NamedPipe, String)> {
let num = generate_random_bytes(8).unwrap();
let num = num.iter().fold(0, |acc, &x| acc * 256 + x as u64);
use rand::Rng;
let num: u64 = rand::thread_rng().gen();
let name = format!(r"\\.\pipe\my-pipe-{}", num);
let pipe = NamedPipe::new(&name)?;
Ok((pipe, name))
@ -48,7 +30,7 @@ fn client(name: &str) -> io::Result<NamedPipe> {
unsafe { Ok(NamedPipe::from_raw_handle(file.into_raw_handle())) }
}
fn pipe() -> io::Result<(NamedPipe, NamedPipe)> {
pub(crate) fn pipe() -> io::Result<(NamedPipe, NamedPipe)> {
let (pipe, name) = server()?;
Ok((pipe, client(&name)?))
}