admin: Disable echoing password

Cargo.lock

@@ -8,6 +8,7 @@ version = "0.1.0"
 dependencies = [
  "blake2b_simd",
  "getopts",
+ "termion",
  "thiserror",
  "xash3d-protocol",
 ]
@@ -45,6 +46,12 @@ version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d468802bab17cbc0cc575e9b053f41e72aa36bfa6b7f55e3529ffa43161b97fa"
 
+[[package]]
+name = "bitflags"
+version = "1.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
+
 [[package]]
 name = "bitflags"
 version = "2.4.0"
@@ -175,6 +182,12 @@ dependencies = [
  "autocfg",
 ]
 
+[[package]]
+name = "numtoa"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b8f8bdf33df195859076e54ab11ee78a1b208382d3a26ec40d142ffc1ecc49ef"
+
 [[package]]
 name = "once_cell"
 version = "1.17.2"
@@ -199,6 +212,24 @@ dependencies = [
  "proc-macro2",
 ]
 
+[[package]]
+name = "redox_syscall"
+version = "0.2.16"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fb5a58c1855b4b6819d59012155603f0b22ad30cad752600aadfcb695265519a"
+dependencies = [
+ "bitflags 1.3.2",
+]
+
+[[package]]
+name = "redox_termios"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8440d8acb4fd3d277125b4bd01a6f38aee8d814b3b5fc09b3f2b825d37d3fe8f"
+dependencies = [
+ "redox_syscall",
+]
+
 [[package]]
 name = "serde"
 version = "1.0.188"
@@ -230,6 +261,18 @@ dependencies = [
  "unicode-ident",
 ]
 
+[[package]]
+name = "termion"
+version = "2.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "659c1f379f3408c7e5e84c7d0da6d93404e3800b6b9d063ba24436419302ec90"
+dependencies = [
+ "libc",
+ "numtoa",
+ "redox_syscall",
+ "redox_termios",
+]
+
 [[package]]
 name = "thiserror"
 version = "1.0.49"
@@ -417,7 +460,7 @@ checksum = "ed94fce61571a4006852b7389a063ab983c02eb1bb37b47f8272ce92d06d9538"
 name = "xash3d-master"
 version = "0.1.0"
 dependencies = [
- "bitflags",
+ "bitflags 2.4.0",
  "chrono",
  "fastrand",
  "getopts",
@@ -433,7 +476,7 @@ dependencies = [
 name = "xash3d-protocol"
 version = "0.1.0"
 dependencies = [
- "bitflags",
+ "bitflags 2.4.0",
  "log",
  "thiserror",
 ]

admin/Cargo.toml

@@ -9,5 +9,6 @@ rust-version = "1.56"
 [dependencies]
 thiserror = "1.0.49"
 getopts = "0.2.21"
+termion = "2"
 blake2b_simd = "<0.6"
 xash3d-protocol = { path = "../protocol", version = "0.1.0" }

admin/src/main.rs

@@ -3,9 +3,10 @@
 
 mod cli;
 
-use std::io;
+use std::io::{self, Write};
 use std::net::UdpSocket;
 
+use termion::input::TermRead;
 use blake2b_simd::Params;
 use thiserror::Error;
 use xash3d_protocol::{admin, master};
@@ -34,12 +35,18 @@ fn send_command(cli: &cli::Cli) -> Result<(), Error> {
         _ => return Err(Error::UnexpectedPacket),
     };
 
-    println!("Password:");
-    let mut password = String::new();
-    io::stdin().read_line(&mut password)?;
-    if password.ends_with('\n') {
-        password.pop();
-    }
+    let stdout = io::stdout();
+    let stdin = io::stdin();
+    let mut stdout = stdout.lock();
+    let mut stdin = stdin.lock();
+
+    stdout.write_all(b"Password:\n")?;
+    stdout.flush()?;
+
+    let password = match stdin.read_passwd(&mut stdout)? {
+        Some(pass) => pass,
+        None => return Ok(()),
+    };
 
     let hash = Params::new()
         .hash_length(cli.hash_len)