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use crate::{
error::{Error, Result},
utils,
};
use bytes::Bytes;
use log::trace;
use serde::{Deserialize, Serialize};
use std::path::Path;
use std::{
collections::HashSet, fmt, fs, io, net::IpAddr, net::SocketAddr, path::PathBuf, str::FromStr,
};
use structopt::StructOpt;
#[derive(Clone, Debug, Default, Serialize, Deserialize, Eq, PartialEq, StructOpt)]
#[structopt(rename_all = "kebab-case")]
pub struct Config {
#[structopt(
short,
long,
default_value = "[]",
parse(try_from_str = serde_json::from_str)
)]
pub hard_coded_contacts: HashSet<SocketAddr>,
#[structopt(short, long)]
pub port: Option<u16>,
#[structopt(long)]
pub ip: Option<IpAddr>,
#[structopt(long)]
pub max_msg_size_allowed: Option<u32>,
#[structopt(long)]
pub idle_timeout_msec: Option<u64>,
#[structopt(long)]
pub keep_alive_interval_msec: Option<u32>,
#[structopt(long)]
pub bootstrap_cache_dir: Option<String>,
#[structopt(long)]
pub upnp_lease_duration: Option<u32>,
#[structopt(long)]
pub forward_port: bool,
#[structopt(long)]
pub fresh: bool,
#[structopt(long)]
pub clean: bool,
}
impl Config {
pub fn read_or_construct_default(user_override: Option<&Path>) -> Result<Config> {
let config_path = config_path(user_override)?;
if config_path.exists() {
trace!("Reading config from {:?}", config_path);
Ok(utils::read_from_disk(&config_path)?)
} else {
let config_dir = config_path
.parent()
.ok_or_else(|| io::ErrorKind::NotFound.into())
.map_err(Error::Io)?;
fs::create_dir_all(&config_dir)?;
let cfg = Config::default();
utils::write_to_disk(&config_path, &cfg)?;
Ok(cfg)
}
}
pub fn clear_config_from_disk(user_override: Option<&Path>) -> Result<()> {
let config_path = config_path(user_override)?;
if config_path.exists() {
fs::remove_file(&config_path)?;
}
Ok(())
}
}
#[derive(Serialize, Deserialize, Clone, Eq, PartialEq)]
pub(crate) struct SerialisableCertificate {
pub cert_der: Bytes,
pub key_der: Bytes,
}
impl SerialisableCertificate {
pub fn new(domains: impl Into<Vec<String>>) -> Result<Self> {
let cert = rcgen::generate_simple_self_signed(domains)?;
Ok(Self {
cert_der: cert.serialize_der()?.into(),
key_der: cert.serialize_private_key_der().into(),
})
}
pub fn obtain_priv_key_and_cert(&self) -> Result<(quinn::PrivateKey, quinn::Certificate)> {
Ok((
quinn::PrivateKey::from_der(&self.key_der).map_err(|_| Error::CertificatePkParse)?,
quinn::Certificate::from_der(&self.cert_der).map_err(|_| Error::CertificateParse)?,
))
}
}
impl FromStr for SerialisableCertificate {
type Err = Error;
fn from_str(s: &str) -> std::result::Result<Self, Self::Err> {
let cert = base64::decode(s)?;
let (cert_der, key_der) = bincode::deserialize(&cert)?;
Ok(Self { cert_der, key_der })
}
}
impl fmt::Debug for SerialisableCertificate {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(
f,
"SerialisableCertificate {{ cert_der: {}, key_der: <HIDDEN> }}",
utils::bin_data_format(&self.cert_der)
)
}
}
fn config_path(user_override: Option<&Path>) -> Result<PathBuf> {
let get_config_file = |dir: &Path| dir.join("config");
let cfg_path = user_override.map_or_else(
|| Ok::<_, Error>(get_config_file(&utils::project_dir()?)),
|d| Ok(get_config_file(d)),
)?;
Ok(cfg_path)
}
#[cfg(test)]
mod tests {
use super::*;
use crate::test_utils::test_dirs;
use crate::{utils, Error};
#[test]
fn config_create_read_and_write() -> Result<(), Error> {
let dir = test_dirs();
let config_path = config_path(Some(&dir))?;
assert!(utils::read_from_disk::<Config>(&config_path).is_err());
let cfg = Config::read_or_construct_default(Some(&dir))?;
let read_cfg = utils::read_from_disk(&config_path)?;
assert_eq!(cfg, read_cfg);
Ok(())
}
}