Add test through DNS
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7659338106
commit
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3 changed files with 122 additions and 74 deletions
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@ -1,6 +1,6 @@
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[package]
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name = "check_ip"
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version = "1.0.0"
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version = "2.0.0"
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edition = "2018"
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[dependencies]
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@ -14,3 +14,4 @@ serde = { version = "1.0", features = ["derive"] }
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log = "0.4"
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simplelog = "^0.10.0"
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clokwerk = "0.3"
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trust-dns-resolver = {version = "0.20", features = ["serde-config"] }
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5
TODO.md
5
TODO.md
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@ -1,4 +1,5 @@
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# TODO
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* [ ] Examples de fichiers de config
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* [ ] Test à partir de l’adresse IP récupéré par DNS (https://crates.io/crates/trust-dns-resolver)
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* [ ] Examples de fichiers de config (config + systemd)
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* [ ] N’envoyer qu’un seul mail par test =>_test_domains renvoie Option<String>
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* [ ] Test de l’IPv6 (https://crates.io/crates/query_external_ip)
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* [ ] Rustfmt
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126
src/main.rs
126
src/main.rs
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@ -8,6 +8,7 @@ extern crate native_tls;
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extern crate serde;
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extern crate simplelog;
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extern crate toml;
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extern crate trust_dns_resolver;
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use self::native_tls::{Protocol, TlsConnector};
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use anyhow::{bail, Result};
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@ -20,8 +21,8 @@ use serde::Deserialize;
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use simplelog::{ConfigBuilder, LevelFilter, WriteLogger};
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use std::fs::{self, OpenOptions};
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use std::net::IpAddr;
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use std::path::Path;
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use std::{thread, time::Duration};
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use trust_dns_resolver::{config::*, Name, Resolver};
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fn main() -> Result<()> {
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// Init log
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@ -40,21 +41,32 @@ fn main() -> Result<()> {
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)
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.unwrap();
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// Init scheduler
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let mut scheduler = Scheduler::new();
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info!("Init");
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scheduler.every(1.day()).at("06:00").run(|| {
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if let Err(e) = check() {
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// Init tester
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info!("Init tester");
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let tester = match Tester::new() {
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Err(e) => {
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error!("Error {}", e);
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bail!("Cannot init tester");
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}
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});
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Ok(tester) => tester,
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};
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// Initial check
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if let Err(e) = check() {
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if let Err(e) = tester.check() {
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error!("Error {}", e);
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bail!("Cannot get initial IP");
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}
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if let Some(false) = tester.config.test {
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// Init scheduler
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info!("Init scheduler");
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let mut scheduler = Scheduler::new();
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scheduler.every(1.day()).at("06:00").run(move || {
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if let Err(e) = tester.check() {
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error!("Error {}", e);
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}
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});
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// Run
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loop {
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scheduler.run_pending();
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@ -62,26 +74,38 @@ fn main() -> Result<()> {
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}
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}
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fn check() -> Result<()> {
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info!("Check");
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match get() {
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Ok((old_ip, new_ip)) => {
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if old_ip != new_ip {
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let msg = format!("IP changed from {} to {}", old_ip, new_ip);
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info!("{}", msg);
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send_mail("New IP".to_owned(), msg)?;
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Ok(())
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}
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struct Tester {
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config: Config,
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dns_resolver: Resolver,
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}
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impl Tester {
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fn new() -> Result<Tester> {
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Ok(Tester {
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config: toml::from_str(&fs::read_to_string("config.toml")?)?,
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dns_resolver: Resolver::new(ResolverConfig::default(), ResolverOpts::default())?,
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})
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}
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fn check(&self) -> Result<()> {
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info!("Check");
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match self.get_ip() {
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Ok(ipv4) => {
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self.test_domains(ipv4)?;
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}
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Err(err) => {
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let msg = format!("Cannot get IP ({})", err);
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error!("{}", msg);
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send_mail("Error on getting IP".to_owned(), msg)?;
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self.send_mail("Error on getting IP".to_owned(), msg)?;
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}
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}
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Ok(())
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}
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fn get() -> Result<(IpAddr, IpAddr)> {
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fn get_ip(&self) -> Result<IpAddr> {
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// Get new IP
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let new_ip = match my_internet_ip::get() {
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Ok(ip) => ip,
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@ -89,54 +113,76 @@ fn get() -> Result<(IpAddr, IpAddr)> {
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};
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info!("Current IP is {}", new_ip);
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// Get old IP
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let path = Path::new("./old_ip.txt");
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let old_ip = if path.exists() {
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fs::read_to_string(path)?.parse()?
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} else {
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new_ip.clone()
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};
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info!("Old IP is {}", old_ip);
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// Write new IP
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fs::write(path, format!("{}", new_ip))?;
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Ok((old_ip, new_ip))
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Ok(new_ip)
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}
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fn send_mail(subject: String, body: String) -> Result<()> {
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fn test_domains(&self, ipv4: IpAddr) -> Result<()> {
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for domain in self.config.server.domains.iter() {
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let address = self.dns_resolver.lookup_ip(domain.clone())?;
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for dns_ip in address.iter() {
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if dns_ip.is_ipv4() {
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if dns_ip != ipv4 {
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let msg = format!(
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"Wrong IPV4 for {} (DNS: {}, current: {})",
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domain, dns_ip, ipv4
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);
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info!("{}", msg);
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self.send_mail("Wrong IP".to_owned(), msg)?;
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}
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}
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}
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}
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Ok(())
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}
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fn send_mail(&self, subject: String, body: String) -> Result<()> {
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info!("Send mail {}", subject);
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let config: Config = toml::from_str(&fs::read_to_string("config.toml")?)?;
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if let Some(false) = self.config.test {
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let email = EmailBuilder::new()
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.to(config.mail.from)
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.from(config.mail.to)
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.to(self.config.mail.from.clone())
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.from(self.config.mail.to.clone())
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.subject(subject)
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.text(body)
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.build()?;
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// Create transport
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let creds = Credentials::new(config.mail.username, config.mail.password);
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let creds = Credentials::new(
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self.config.mail.username.clone(),
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self.config.mail.password.clone(),
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);
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let mut tls_builder = TlsConnector::builder();
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tls_builder.min_protocol_version(Some(Protocol::Sslv3));
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let tls_parameters =
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ClientTlsParameters::new(config.mail.server.clone(), tls_builder.build().unwrap());
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let tls_parameters = ClientTlsParameters::new(
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self.config.mail.server.clone(),
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tls_builder.build().unwrap(),
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);
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let mut mailer = SmtpClient::new(
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(config.mail.server, config.mail.port),
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(self.config.mail.server.clone(), self.config.mail.port),
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ClientSecurity::Required(tls_parameters),
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)?
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.credentials(creds)
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.transport();
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mailer.send(email.into())?;
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} else {
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println!("subject: {} - body: {}", subject, body);
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};
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Ok(())
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}
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}
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#[derive(Debug, Deserialize)]
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struct Config {
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mail: MailConfig,
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server: ServerConfig,
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test: Option<bool>,
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}
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#[derive(Debug, Deserialize)]
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struct ServerConfig {
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domains: Vec<Name>,
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}
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#[derive(Debug, Deserialize)]
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