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#![feature(iterator_try_collect, never_type)]
pub mod client;
pub mod server;
use anyhow::{anyhow, Result};
use clap::{Parser, Subcommand};
use client::Client;
use log::info;
use serde::Deserialize;
use server::server;
use std::{
fs::{read_to_string, File},
net::SocketAddr,
os::unix::fs::MetadataExt,
path::PathBuf,
};
pub type Serial = u64;
#[derive(Parser)]
/// A tool for safely automating offsite backups over a network
struct Args {
/// Path to the configuration file
config: PathBuf,
#[clap(subcommand)]
action: Action,
}
#[derive(Subcommand)]
enum Action {
/// Run as a server
Daemon,
/// List backups stored on other peers
List {
/// Which peers to list backups of; all if not specified
peer: Option<String>,
},
/// Download a backup
Download {
path: PathBuf,
/// Which peer to download from, any if not specified
peer: Option<String>,
/// Serial of the backup to download, latest if not specified
serial: Option<Serial>,
},
/// Upload a backup to one or more peers
Upload {
/// Path to backup file
path: PathBuf,
/// Which peer to upload to, all if not specified
peer: Option<String>,
},
}
#[derive(Deserialize)]
pub struct Config {
storage: StorageConfig,
server: ServerConfig,
peer: Vec<PeerConfig>,
}
#[derive(Deserialize)]
pub struct PeerConfig {
name: String,
address: SocketAddr,
shared_secret: String,
}
#[derive(Deserialize)]
pub struct ServerConfig {
address: String,
}
#[derive(Deserialize)]
pub struct StorageConfig {
root: PathBuf,
size: u64,
versions: usize,
upload_cooldown: u64,
download_cooldown: u64,
upload_speed: usize,
download_speed: usize,
}
fn main() -> Result<()> {
env_logger::init_from_env("LOG");
let args = Args::parse();
let config = read_to_string(&args.config)?;
let config = toml::from_str::<Config>(&config)?;
match args.action {
Action::Daemon => server(config.into())?,
Action::List { peer } => {
let peers = config.peer.iter().filter(|p| {
if let Some(pn) = &peer {
pn == &p.name
} else {
true
}
});
for p in peers {
println!("peer {:?}", p.name);
let mut client = Client::new(p.address, &p.shared_secret)?;
for (mtime, size, serial) in client.list()? {
println!("\tserial={serial} mtime={mtime} size={size}")
}
client.quit()?;
}
}
Action::Download { path, serial, peer } => {
let mut peers = config.peer.iter().filter(|p| {
if let Some(pn) = &peer {
pn == &p.name
} else {
true
}
});
let peer = peers.next().ok_or(anyhow!("no matching peer"))?;
info!("connecting to {:?}", peer.name);
let mut client = Client::new(peer.address, &peer.shared_secret)?;
let file = File::create_new(&path)?;
let serial = if let Some(serial) = serial {
serial
} else {
client.list()?.last().ok_or(anyhow!("no backups stored"))?.2
};
println!("downloading serial={serial} from {}", peer.name);
client.download(serial, file)?;
info!("upload successful");
client.quit()?;
println!("success")
}
Action::Upload { peer, path } => {
let peers = config.peer.iter().filter(|p| {
if let Some(pn) = &peer {
pn == &p.name
} else {
true
}
});
for peer in peers {
info!("connecting to {:?}", peer.name);
println!("uploading to {}", peer.name);
let mut client = Client::new(peer.address, &peer.shared_secret)?;
let file = File::open(&path)?;
let size = file.metadata()?.size();
client.upload(size, file)?;
info!("upload successful");
client.quit()?;
}
println!("success")
}
}
Ok(())
}
|
