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Desktop-side handshake + property checks

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This commit is contained in:
asonix 2021-06-05 11:10:22 -05:00
commit 1c5c9199d4
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3
.gitignore vendored Normal file
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/target
/.flatpak-builder
/build

257
Cargo.lock generated Normal file
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# This file is automatically @generated by Cargo.
# It is not intended for manual editing.
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11
Cargo.toml Normal file
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[package]
name = "device-ls"
version = "0.1.0"
authors = ["asonix <asonix@asonix.dog>"]
edition = "2018"
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
[dependencies]
rand = "0.8.3"
serialport = "4.0.1"

23
build-aux/cargo.sh Executable file
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#!/bin/sh
export MESON_BUILD_ROOT="$1"
export MESON_SOURCE_ROOT="$2"
export CARGO_TARGET_DIR="$MESON_BUILD_ROOT"/target
export CARGO_HOME="$MESON_BUILD_ROOT"/cargo-home
export OUTPUT="$3"
export BUILDTYPE="$4"
export APP_BIN="$5"
if [ $BUILDTYPE = "release" ]
then
echo "RELEASE MODE"
cargo build --manifest-path \
"$MESON_SOURCE_ROOT"/Cargo.toml --release && \
cp "$CARGO_TARGET_DIR"/release/"$APP_BIN" "$OUTPUT"
else
echo "DEBUG MODE"
cargo build --manifest-path \
"$MESON_SOURCE_ROOT"/Cargo.toml && \
cp "$CARGO_TARGET_DIR"/debug/"$APP_BIN" "$OUTPUT"
fi

5
build.sh Executable file
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#!/usr/bin/env bash
set -xe
flatpak-builder build dog.asonix.git.asonix.DeviceLs.yml --user --install --force-clean

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dog.asonix.git.asonix.DeviceLs.yml Normal file
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app-id: dog.asonix.git.asonix.DeviceLs
runtime: io.elementary.Platform
runtime-version: 'daily'
sdk: io.elementary.Sdk
sdk-extensions:
- 'org.freedesktop.Sdk.Extension.rust-stable'
command: device-ls
finish-args:
- '--device=all'
build-options:
append-path: /usr/lib/sdk/rust-stable/bin
build-args:
- '--share=network'
env:
RUST_BACKTRACE: "1"
RUST_LOG: device_ls=debug
cleanup:
- '/include'
- '/lib/pkgconfig'
- '/man'
- '/share/doc'
- '/share/gtk-doc'
- '/share/man'
- '/share/pkgconfig'
- '*.la'
- '*.a'
modules:
- name: device-ls
buildsystem: meson
config-opts:
- -Dbuildtype=debug
sources:
- type: dir
path: .

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meson.build Normal file
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project('device-ls',
version: '0.1.0',
meson_version: '>= 0.51.0',
default_options: [ 'warning_level=2',
],
)
cargo_sources = files(
'Cargo.toml',
'Cargo.lock',
)
subdir('src')

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src/main.rs Normal file
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fn main() -> Result<(), Box<dyn std::error::Error>> {
for port in serialport::available_ports()? {
if let Ok(mut port) = perform_handshake(port) {
println!("Handshake success");
if let Ok(ident) = get_prop(&mut port, b"ident") {
println!("ident success: {:?}", ident);
}
if let Ok(name) = get_prop(&mut port, b"name") {
println!("name success: {}", String::from_utf8_lossy(&name));
}
if let Ok(author) = get_prop(&mut port, b"author") {
println!("author success: {}", String::from_utf8_lossy(&author));
}
}
}
Ok(())
}
fn get_prop(
port: &mut Box<dyn serialport::SerialPort>,
prop: &[u8],
) -> Result<Vec<u8>, Box<dyn std::error::Error>> {
port.write_all(prop)?;
port.flush()?;
let mut len_buf = [0u8; 1];
port.read_exact(&mut len_buf)?;
let input_len = len_buf[0];
println!("LEN: {}", input_len);
let mut input = vec![0u8; input_len as usize];
port.read_exact(&mut input)?;
Ok(input)
}
#[derive(Clone, Copy, Debug)]
struct HandshakeError;
fn perform_handshake(
port: serialport::SerialPortInfo,
) -> Result<Box<dyn serialport::SerialPort>, Box<dyn std::error::Error>> {
use rand::Fill;
use std::io::{Read, Write};
std::fs::metadata(&port.port_name)?;
const INPUT_LEN: usize = 16;
let mut output = [0u8; INPUT_LEN * 2];
let mut input = [0u8; INPUT_LEN];
let mut port = serialport::new(&port.port_name, 9600)
.timeout(std::time::Duration::from_millis(500))
.open()?;
let mut rng = rand::thread_rng();
output.try_fill(&mut rng)?;
port.write_all(&output)?;
port.flush()?;
port.read_exact(&mut input)?;
for (index, byte) in input.iter().enumerate() {
if *byte != (output[index] ^ output[index + INPUT_LEN]) {
return Err(HandshakeError.into());
}
output[index] = *byte;
output[index + INPUT_LEN] = *byte;
}
port.write_all(&output)?;
port.flush()?;
Ok(port)
}
impl std::fmt::Display for HandshakeError {
fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
write!(f, "HandshakeError")
}
}
impl std::error::Error for HandshakeError {}

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src/meson.build Normal file
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rust_sources = files(
'main.rs'
)
sources = [cargo_sources, rust_sources]
cargo_script = find_program(join_paths(meson.source_root(), 'build-aux/cargo.sh'))
cargo_release = custom_target(
'cargo-build',
build_by_default: true,
input: sources,
output: 'device-ls',
console: true,
install: true,
install_dir: get_option('bindir'),
command: [
cargo_script,
meson.build_root(),
meson.source_root(),
'@OUTPUT@',
get_option('buildtype'),
'device-ls',
]
)