cosmoline/src/main.rs

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use clap::{load_yaml, App};
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use ed25519_dalek::{Keypair, PublicKey, SecretKey};
use json::{object, JsonValue};
use rand::rngs::OsRng;
use regex::Regex;
use std::fs::File;
use std::path::PathBuf;
use std::io::prelude::*;
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trait SSBKeypair {
fn to_json(&self) -> JsonValue;
fn from_json(obj: JsonValue) -> Self;
fn read_or_generate(path: PathBuf) -> Self;
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}
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()
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.strip_suffix(".ed25519")
.unwrap();
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let pubkey = base64::decode(pubkey).unwrap();
let pubkey = PublicKey::from_bytes(pubkey.as_slice()).unwrap();
let privkey = obj["private"]
.as_str()
.unwrap()
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.strip_suffix(".ed25519")
.unwrap();
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let privkey = base64::decode(privkey).unwrap();
let privkey = SecretKey::from_bytes(&privkey[00..32]).unwrap();
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Keypair {
public: pubkey,
secret: privkey,
}
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}
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
}
}
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}
type Config = toml::map::Map<String, toml::Value>;
fn read_config(path: PathBuf) -> Config {
let mut file = File::open(path).unwrap();
let mut content = String::new();
file.read_to_string(&mut content).unwrap();
toml::from_str(content.as_str()).unwrap()
}
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fn main() {
let options = load_yaml!("options.yaml");
let options = App::from(options).get_matches();
let config_file = match options.value_of("config") {
Some(path) => PathBuf::from(path),
None => dirs::config_dir()
.unwrap()
.join("cosmoline")
.join("config.toml"),
};
let config = read_config(config_file);
let path = match options.value_of("path") {
Some(path) => PathBuf::from(path),
None => match config.get("path") {
Some(path) => PathBuf::from(path.as_str().unwrap()),
None => dirs::home_dir().unwrap().join(".cosmoline"),
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},
};
let keypair = Keypair::read_or_generate(path.join("secret"));
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println!("{}", keypair.to_json().pretty(2));
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}