cosmoline/src/main.rs

91 lines
2.9 KiB
Rust

use clap::{load_yaml, App};
use ed25519_dalek::{SecretKey, PublicKey, Keypair};
use rand::rngs::OsRng;
use regex::Regex;
use json::{object, JsonValue};
use std::fs::File;
use std::path::PathBuf;
use std::io::prelude::*;
trait SSBKeypair {
fn to_json(&self) -> JsonValue;
fn from_json(obj: JsonValue) -> Self;
fn read_or_generate(path: PathBuf) -> Self;
}
impl SSBKeypair for Keypair {
fn to_json(&self) -> JsonValue {
let pubstring = base64::encode(self.public.to_bytes());
let privstring = base64::encode([self.secret.to_bytes(), self.public.to_bytes()].concat());
object! {
curve: "ed25519",
public: format!("{}.ed25519", pubstring),
private: format!("{}.ed25519", privstring),
id: format!("@{}.ed25519", pubstring)
}
}
fn from_json(obj: JsonValue) -> Self {
if obj["curve"].as_str().unwrap() != "ed25519" {
panic!("wrong curve");
}
let pubkey = obj["public"]
.as_str()
.unwrap()
.replace(".ed25519", "");
let pubkey = base64::decode(pubkey).unwrap();
let pubkey = PublicKey::from_bytes(pubkey.as_slice()).unwrap();
let privkey = obj["private"]
.as_str()
.unwrap()
.replace(".ed25519", "");
let privkey = base64::decode(privkey).unwrap();
let privkey = SecretKey::from_bytes(&privkey[00..32]).unwrap();
Keypair { public: pubkey, secret: privkey }
}
fn read_or_generate(path: PathBuf) -> Self {
if path.exists() {
let mut secret_file = File::open(path).unwrap();
let mut secret = String::new();
secret_file.read_to_string(&mut secret).unwrap();
let re = Regex::new(r"\s*#[^\n]*").unwrap();
let secret = re.replace_all(secret.as_str(), "");
SSBKeypair::from_json(json::parse(&secret).unwrap())
} else {
let mut csprng = OsRng {};
Keypair::generate(&mut csprng)
// TODO: write this keypair to a fresh secret file
}
}
}
fn main() {
let options = load_yaml!("options.yaml");
let matches = App::from(options).get_matches();
let config_file = match matches.value_of("config") {
Some(path) => PathBuf::from(path),
None => dirs::config_dir()
.unwrap()
.join("cosmoline")
.join("config.toml"),
};
let mut config_file = File::open(config_file).unwrap();
let mut config = String::new();
config_file.read_to_string(&mut config).unwrap();
let config: toml::Value = toml::from_str(config.as_str()).unwrap();
let path = match config.as_table().unwrap().get("path") {
Some(path) => PathBuf::from(path.as_str().unwrap()),
None => dirs::home_dir().unwrap().join(".cosmoline"),
};
let keypair = Keypair::read_or_generate(path.join("secret"));
println!("{}", keypair.to_json().pretty(2));
}