cloudflare-ddns-service/src/main.rs
2019-09-23 10:58:41 +02:00

124 lines
3.5 KiB
Rust

mod file;
mod network;
use file::{read_cache_file, write_cache_file};
use human_panic::setup_panic;
use network::{get_current_ip, get_dns_record_id, get_zone_identifier, update_ddns};
use quicli::fs::read_file;
use quicli::prelude::*;
use std::path::PathBuf;
use structopt::StructOpt;
#[derive(Deserialize)]
struct Config {
email: String,
auth_key: String,
zone: String,
domain: String,
}
#[derive(Debug, StructOpt)]
/// Inform Cloudflare's DDNS service of the current IP address for your domain
struct Cli {
/// Your TOML config file containing all the required options (email, auth_key, zone, domain) which you can use instead of passing the arguments to the command line
#[structopt(long = "config", short = "f")]
config: Option<PathBuf>,
/// Your Cloudflare login email
#[structopt(long = "email", short = "e", required_unless = "config")]
email: Option<String>,
/// The auth key you need to generate in your Cloudflare profile
#[structopt(long = "key", short = "k", required_unless = "config")]
auth_key: Option<String>,
/// The zone in which your domain is (usually that is your base domain name)
#[structopt(long = "zone", short = "z", required_unless = "config")]
zone: Option<String>,
/// The domain for which you want to report the current IP address
#[structopt(long = "domain", short = "d", required_unless = "config")]
domain: Option<String>,
/// Cache file for previously reported IP address (if skipped the IP will be reported on every execution)
#[structopt(long = "cache", short = "c")]
cache: Option<PathBuf>,
}
fn main() -> CliResult {
setup_panic!();
let args = Cli::from_args();
let should_use_cache = args.cache.is_some();
let cached_ip: Option<String> = match args.cache.clone() {
Some(v) => {
if v.exists() {
Some(read_cache_file(&v.clone())?)
} else {
Some("0.0.0.0".to_owned())
}
}
None => None,
};
let current_ip = get_current_ip()?;
if cached_ip.is_some() && current_ip == cached_ip.unwrap() {
println!("IP is unchanged. Exiting...");
return Ok(());
}
if should_use_cache {
println!(
"Saving current IP {} to cache file {:?}...",
&current_ip,
&args.cache.clone().unwrap()
);
write_cache_file(&args.cache.unwrap(), &current_ip)?;
}
let (email, auth_key, zone, domain) = match args.config {
Some(c) => {
let config_str = read_file(c)?;
let config: Config = toml::from_str(&config_str)?;
(config.email, config.auth_key, config.zone, config.domain)
}
None => (
args.email.expect("Email is not set"),
args.auth_key.expect("Auth key is not set"),
args.zone.expect("Zone is not set"),
args.domain.expect("Domain is not set"),
),
};
update(&current_ip, &email, &auth_key, &zone, &domain)?;
println!(
"Successfully updated the A record for {} to {}",
&domain, &current_ip
);
Ok(())
}
fn update(
current_ip: &str,
email: &str,
auth_key: &str,
zone: &str,
domain: &str,
) -> Result<(), Error> {
let zone_id = get_zone_identifier(&zone, &email, &auth_key)?;
let record_id = get_dns_record_id(&zone_id, &domain, &email, &auth_key)?;
update_ddns(
&current_ip,
&domain,
&zone_id,
&record_id,
&email,
&auth_key,
)?;
Ok(())
}