/*use cloudflare_old::{Instance, CloudflareDnsType};*/
use reqwest::blocking::get;
use std::{thread::{sleep}};
use std::error::Error;
use std::net::{Ipv4Addr, Ipv6Addr};
use std::str::FromStr;
use chrono::{Utc, Duration};
use log::{info, warn, error, LevelFilter};
use reqwest::StatusCode;
use systemd_journal_logger::{connected_to_journal, JournalLog};
use crate::cloudflare::{CloudflareZone, DnsRecordType};
use crate::config::{AppConfig, InterfaceConfig, ZoneConfig, ZoneEntry};
mod config;
mod cloudflare;
struct Addresses {
ipv4_uri: String,
ipv6_uri: String,
ipv4: Ipv4Addr,
ipv6: Ipv6Addr,
}
impl Addresses {
fn new() -> Result<Self, Box<dyn Error>> {
let mut ret = Self {
ipv4_uri: "https://ipinfo.io/ip".to_owned(),
ipv6_uri: "https://v6.ipinfo.io/ip".to_owned(),
ipv4: Ipv4Addr::new(0, 0, 0, 0),
ipv6: Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 0)
};
match ret.get_v4() {
Ok(ip) => ret.ipv4 = ip,
Err(_) => {
let err_msg = format!("Unable to fetch IPv4 from '{}' during init. Aborting!", ret.ipv4_uri);
match connected_to_journal() {
true => error!("[ERROR] {err_msg}"),
false => eprintln!("[ERROR] {err_msg}"),
}
panic!("{}", err_msg);
}
}
match ret.get_v6() {
Ok(ip) => ret.ipv6 = ip,
Err(_) => {
let err_msg = format!("Unable to fetch IPv6 from '{}' during init. Aborting!", ret.ipv6_uri);
match connected_to_journal() {
true => error!("[ERROR] {err_msg}"),
false => eprintln!("[ERROR] {err_msg}"),
}
panic!("{}", err_msg);
}
}
Ok(ret)
}
fn update(&mut self) {
match self.get_v4() {
Ok(ip) => {
if ip != self.ipv4 {
if ip == Ipv4Addr::new(0,0,0,0) {
let warn_msg = "'0.0.0.0' detected as new IPv4, skipping changes".to_owned();
match connected_to_journal() {
true => warn!("[WARN] {warn_msg}"),
false => println!("[WARN] {warn_msg}"),
}
}
else {
let info_msg = format!("IPv4 changed from '{}' to '{}'", self.ipv4, ip);
match connected_to_journal() {
true => info!("[INFO] {info_msg}"),
false => println!("[INFO] {info_msg}"),
}
self.ipv4 = ip;
}
}
}
Err(e) => {
let error_msg = format!("Unable to fetch IPv4 from '{}': {}", self.ipv4_uri, e);
match connected_to_journal() {
true => error!("[ERROR] {error_msg}"),
false => eprintln!("[ERROR] {error_msg}"),
}
}
}
match self.get_v6() {
Ok(ip) => {
if ip != self.ipv6 {
if ip == Ipv6Addr::new(0,0,0,0,0,0,0,0) {
let warn_msg = "'::' detected as new IPv6, skipping changes".to_owned();
match connected_to_journal() {
true => warn!("[WARN] {warn_msg}"),
false => println!("[WARN] {warn_msg}"),
}
}
else {
let info_msg = format!("IPv6 changed from '{}' to '{}'", self.ipv6, ip);
match connected_to_journal() {
true => info!("[INFO] {info_msg}"),
false => println!("[INFO] {info_msg}"),
}
self.ipv6 = ip;
}
}
}
Err(e) => {
let error_msg = format!("Unable to fetch IPv6 from '{}': {}", self.ipv6_uri, e);
match connected_to_journal() {
true => error!("[ERROR] {error_msg}"),
false => eprintln!("[ERROR] {error_msg}"),
}
}
}
}
fn get_v4(&self) -> Result<Ipv4Addr, reqwest::Error> {
match get(&self.ipv4_uri) {
Ok(res) => {
match res.status() {
StatusCode::OK => {
let ip_string = res.text().expect("Returned data should always contain text");
Ok(Ipv4Addr::from_str(ip_string.as_str()).expect("Returned IP should always be parseable"))
},
_ => {
let warn_msg = format!("Unexpected HTTP status {}", res.status());
match connected_to_journal() {
true => warn!("[WARN] {warn_msg}"),
false => println!("[WARN] {warn_msg}"),
}
Ok(Ipv4Addr::new(0, 0, 0, 0))
}
}
}
Err(e) => Err(e),
}
}
fn get_v6(&self) -> Result<Ipv6Addr, reqwest::Error> {
match get(&self.ipv6_uri) {
Ok(res) => {
match res.status() {
StatusCode::OK => {
let ip_string: String = res.text().expect("Returned data should always contain text");
Ok(Ipv6Addr::from_str(ip_string.as_str()).expect("Returned IP should always be parseable"))
},
_ => {
let warn_msg = format!("Unexpected HTTP status {}", res.status());
match connected_to_journal() {
true => warn!("[WARN] {warn_msg}"),
false => println!("[WARN] {warn_msg}"),
}
Ok(Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 0))
}
}
},
Err(e) => Err(e),
}
}
}
fn compare_zones(old_zone: &ZoneConfig, new_zone: &ZoneConfig) -> Vec<String> {
let mut info_pieces = vec![];
if old_zone.id != new_zone.id || old_zone.email != new_zone.email {
let msg = "changed id or email".to_owned();
info_pieces.push(msg);
}
if old_zone.entries != new_zone.entries {
let mut added: Vec<&ZoneEntry> = vec![];
let mut modified: Vec<&ZoneEntry> = vec![];
new_zone.entries.iter().for_each(|entry| {
let matches: Vec<&ZoneEntry> = old_zone.entries.iter().filter(|old_entry| {
if old_entry.name == entry.name {
if old_entry != &entry {
modified.push(entry);
}
true
}
else {
false
}
}).collect();
if matches.is_empty() {
added.push(entry);
}
});
let deleted: Vec<&ZoneEntry> = old_zone.entries.iter().filter(|old_entry| {
!new_zone.entries.contains(old_entry) &&
!new_zone.entries.iter().any(|changed_entry| { changed_entry.name == old_entry.name })
}).collect();
if !deleted.is_empty() {
let mut deleted_entries_vec = vec![];
for entry in deleted {
deleted_entries_vec.push(entry.name.clone());
}
let deleted_entries = match deleted_entries_vec.len() {
1 => deleted_entries_vec[0].clone(),
2 => deleted_entries_vec.join(" & "),
_ => deleted_entries_vec.join(", "),
};
let msg = format!("deleted {deleted_entries}");
info_pieces.push(msg);
}
if !added.is_empty() {
let mut added_entries_vec = vec![];
for entry in added {
added_entries_vec.push(entry.name.clone());
}
let added_entries = match added_entries_vec.len() {
1 => added_entries_vec[0].clone(),
2 => added_entries_vec.join(" & "),
_ => added_entries_vec.join(", "),
};
let msg = format!("added {added_entries}");
info_pieces.push(msg);
}
if !modified.is_empty() {
let mut modified_entries_vec = vec![];
for entry in modified {
modified_entries_vec.push(entry.name.clone());
}
let modified_entries = match modified_entries_vec.len() {
1 => modified_entries_vec[0].clone(),
2 => modified_entries_vec.join(" & "),
_ => modified_entries_vec.join(", "),
};
let msg = format!("modified {modified_entries}");
info_pieces.push(msg);
}
}
info_pieces
}
fn main() {
JournalLog::new().expect("Systemd-Logger crate error").install().expect("Systemd-Logger crate error");
log::set_max_level(LevelFilter::Info);
let mut config = AppConfig::load().unwrap();
let mut ifaces = InterfaceConfig::load().unwrap();
let mut zone_cfgs = ZoneConfig::load().unwrap();
let mut now = Utc::now() - Duration::seconds(59);
let mut start = now;
let mut ips = match Addresses::new() {
Ok(ips) => ips,
Err(e) => panic!("{}", e)
};
let reload_interval = config.check_interval_seconds.unwrap_or_else(|| {
let warn_msg = "Reload interval option not set, defaulting to 60";
match connected_to_journal() {
true => warn!("[WARN] {warn_msg}"),
false => println!("[WARN] {warn_msg}"),
}
60
}) as i64;
loop {
now = Utc::now();
if now >= start + Duration::seconds(reload_interval) {
start = now;
if let Some(uptime_url) = &config.uptime_url {
let _ = get(uptime_url);
}
match InterfaceConfig::load() {
Ok(new_cfg) => {
if ifaces != new_cfg {
if ifaces.host_address != new_cfg.host_address {
let info_msg = format!("Host address in interfaces.toml changed from '{}' to '{}'", ifaces.host_address, new_cfg.host_address);
match connected_to_journal() {
true => info!("[INFO] {info_msg}"),
false => println!("[INFO] {info_msg}"),
}
}
if ifaces.interfaces != new_cfg.interfaces {
let mut new: Vec<(&String, &Ipv6Addr)> = vec![];
let mut modified: Vec<(&String, &Ipv6Addr)> = vec![];
new_cfg.interfaces.iter().for_each(|(interface, address)| {
if ifaces.interfaces.contains_key(interface) {
if ifaces.interfaces.get(interface) != Some(address) {
modified.push((interface, address));
}
}
else {
let matches: Vec<&Ipv6Addr> = ifaces.interfaces.values().filter(|addr| {
addr == &address
}).collect();
if matches.is_empty() {
new.push((interface, address));
}
else {
modified.push((interface, address));
}
}
});
let deleted: Vec<(&String, &Ipv6Addr)> = ifaces.interfaces.iter().filter(|(interface, address)| {
!new_cfg.interfaces.contains_key(*interface) && !modified.iter().any(|(_, new_addr)| { new_addr == address })
}).collect();
for (name, addr) in deleted {
let info_msg = format!("Deleted interface '{name}' with address '{addr}'");
match connected_to_journal() {
true => info!("[INFO] {info_msg}"),
false => println!("[INFO] {info_msg}"),
}
}
for (name, addr) in new {
let info_msg = format!("Added interface '{name}' with address '{addr}'");
match connected_to_journal() {
true => info!("[INFO] {info_msg}"),
false => println!("[INFO] {info_msg}"),
}
}
for (name, addr) in modified {
let info_msg= if ifaces.interfaces.contains_key(name) {
let old_addr = ifaces.interfaces.get(name).expect("contains check on ifaces was successful");
format!("Changed interface address of '{name}' from '{old_addr}' to '{addr}'")
}
else {
let old_name = ifaces.interfaces.iter()
.find(|(_, old_addr)| { old_addr == &addr })
.expect("modified entry should not exist if this fails")
.0;
format!("Changed interface name for '{addr}' from '{old_name}' to '{name}'")
};
match connected_to_journal() {
true => info!("[INFO] {info_msg}"),
false => println!("[INFO] {info_msg}"),
}
}
}
ifaces = new_cfg
}
},
Err(e) => {
let err_msg = format!("Unable to load ínterfaces.toml with error: {e}");
match connected_to_journal() {
true => error!("[ERROR] {err_msg}"),
false => eprintln!("[ERROR] {err_msg}"),
}
}
}
match ZoneConfig::load() {
Ok(new_cfgs) => {
if zone_cfgs != new_cfgs {
if zone_cfgs.len() != new_cfgs.len() {
let new_zones: Vec<&ZoneConfig> = new_cfgs.iter().filter(|zone_cfg| {
!zone_cfgs.contains(zone_cfg)
}).collect();
let deleted_zones: Vec<&ZoneConfig> = zone_cfgs.iter().filter(|zone_cfg| {
!new_cfgs.contains(zone_cfg)
}).collect();
for new_zone in new_zones {
let name = new_zone.name.as_str();
let entry_count = new_zone.entries.len();
let info_msg = format!("Added Zone '{name}' with {entry_count} entries");
match connected_to_journal() {
true => info!("[INFO] {info_msg}"),
false => println!("[INFO] {info_msg}"),
}
}
for deleted_zone in deleted_zones {
let name = deleted_zone.name.as_str();
let entry_count = deleted_zone.entries.len();
let info_msg = format!("Deleted Zone '{name}' with {entry_count} entries");
match connected_to_journal() {
true => info!("[INFO] {info_msg}"),
false => println!("[INFO] {info_msg}"),
}
}
}
else {
let changed_zones: Vec<&ZoneConfig> = new_cfgs.iter().filter(|new_cfg| {
zone_cfgs.iter().any(|old_cfg| {
old_cfg.name == new_cfg.name && &old_cfg != new_cfg
})
}).collect();
let deleted_zones: Vec<&ZoneConfig> = zone_cfgs.iter().filter(|old_cfg| {
!new_cfgs.iter().any(|new_cfg| {
old_cfg.name == new_cfg.name
})
}).collect();
let added_zones: Vec<&ZoneConfig> = new_cfgs.iter().filter(|new_cfg| {
!zone_cfgs.iter().any(|old_cfg| {
old_cfg.name == new_cfg.name
})
}).collect();
if deleted_zones.len() == 1 && added_zones.len() == 1 {
let new_zone = added_zones[0];
let old_zone = deleted_zones[0];
let mut info_pieces = vec![];
{
let msg = format!("name from '{}' to '{}'", old_zone.name, new_zone.name);
info_pieces.push(msg);
}
let info_pieces = [info_pieces, compare_zones(old_zone, new_zone)].concat();
println!("{}", info_pieces.join(", "));
}
else {
if !deleted_zones.is_empty() {
let mut info_pieces = vec![];
for deleted_zone in deleted_zones {
info_pieces.push(deleted_zone.name.clone());
}
let deleted_info = match info_pieces.len() {
1 => info_pieces[0].clone(),
2 => info_pieces.join(" & "),
_ => info_pieces.join(", "),
};
let info_msg = format!("Deleted {deleted_info}");
match connected_to_journal() {
true => info!("[INFO] {info_msg}"),
false => println!("[INFO] {info_msg}"),
}
}
if !added_zones.is_empty() {
let mut info_pieces = vec![];
for added_zone in added_zones {
info_pieces.push(added_zone.name.clone());
}
let added_info = match info_pieces.len() {
1 => info_pieces[0].clone(),
2 => info_pieces.join(" & "),
_ => info_pieces.join(", "),
};
let info_msg = format!("Added {added_info}");
match connected_to_journal() {
true => info!("[INFO] {info_msg}"),
false => println!("[INFO] {info_msg}"),
}
}
}
for changed_zone in changed_zones {
// try find element where one of these is unchanged
let old_zone = zone_cfgs.iter().find(|zone_cfg| {
zone_cfg.name == changed_zone.name
}).expect("This element should exist because it was added to the changed_zones vector");
let info_pieces = compare_zones(old_zone, changed_zone);
let changed_info = match info_pieces.len() {
1 => info_pieces[0].clone(),
2 => info_pieces.join(" & "),
_ => info_pieces.join(", "),
};
let info_msg_raw = format!("{changed_info} for {}", changed_zone.name);
let mut info_msg_chars = info_msg_raw.chars();
let info_msg = match info_msg_chars.next() {
None => String::new(),
Some(first) => first.to_uppercase().collect::<String>() + info_msg_chars.as_str(),
};
match connected_to_journal() {
true => info!("[INFO] {info_msg}"),
false => println!("[INFO] {info_msg}"),
}
}
}
zone_cfgs = new_cfgs
}
}
Err(e) => {
let err_msg = format!("Unable to load from zones.d with error: {e}");
match connected_to_journal() {
true => error!("[ERROR] {err_msg}"),
false => eprintln!("[ERROR] {err_msg}"),
}
}
}
match AppConfig::load() {
Ok(new_cfg) => {
if config != new_cfg {
if config.cloudflare_api_token != new_cfg.cloudflare_api_token {
let info_msg = "API token in config.toml changed";
match connected_to_journal() {
true => info!("[INFO] {info_msg}"),
false => println!("[INFO] {info_msg}"),
}
}
if config.check_interval_seconds != new_cfg.check_interval_seconds {
let info_msg = match config.check_interval_seconds {
Some(old_interval) => {
match new_cfg.check_interval_seconds {
Some(new_interval) => format!("Check interval in config.toml changed from {old_interval}s to {new_interval}s"),
None => format!("Check interval in config.toml changed from {old_interval}s to 60s"),
}
},
None => {
match new_cfg.check_interval_seconds {
Some(new_interval) => format!("Check interval in config.toml changed from 60s to {new_interval}s"),
None => "This is a unicorn error, congratulations.".to_owned(),
}
}
};
match connected_to_journal() {
true => info!("[INFO] {info_msg}"),
false => println!("[INFO] {info_msg}"),
}
}
if config.uptime_url != new_cfg.uptime_url {
let info_msg = match &config.uptime_url {
Some(old_url) => {
match &new_cfg.uptime_url {
Some(new_url) => format!("Uptime URL in config.toml changed from '{old_url}' to '{new_url}'"),
None => "Uptime URL in config.toml was removed".to_owned(),
}
},
None => {
match &new_cfg.uptime_url {
Some(new_url) => format!("Uptime URL '{new_url}' was added to config.toml"),
None => "This is a unicorn error, congratulations.".to_owned(),
}
}
};
match connected_to_journal() {
true => info!("[INFO] {info_msg}"),
false => println!("[INFO] {info_msg}"),
}
}
config = new_cfg
}
}
Err(e) => {
let err_msg = format!("Unable to load config.toml with error: {e}");
match connected_to_journal() {
true => error!("[ERROR] {err_msg}"),
false => eprintln!("[ERROR] {err_msg}"),
}
}
}
ips.update();
for zone in &zone_cfgs {
let cf_zone = CloudflareZone::new(zone, &config);
let cf_entries = match cf_zone.get_entries(None) {
Ok(entries) => entries,
Err(_) => {
continue
}
};
for entry in &zone.entries {
let ipv6;
let ipv4;
match entry.r#type[..] {
[DnsRecordType::AAAA, DnsRecordType::A] => {
ipv6 = match ifaces.full_v6(&entry.interface, ips.ipv6) {
Ok(ip) => Some(ip),
Err(_) => {
continue
}
};
ipv4 = Some(ips.ipv4);
},
[DnsRecordType::A, DnsRecordType::AAAA] => {
ipv6 = match ifaces.full_v6(&entry.interface, ips.ipv6) {
Ok(ip) => Some(ip),
Err(_) => {
continue
}
};
ipv4 = Some(ips.ipv4);
},
[DnsRecordType::AAAA] => {
ipv6 = match ifaces.full_v6(&entry.interface, ips.ipv6) {
Ok(ip) => Some(ip),
Err(_) => {
continue
}
};
ipv4 = None;
},
[DnsRecordType::A] => {
ipv6 = None;
ipv4 = Some(ips.ipv4);
},
_ => {
let warn_msg = "Config contains unsupported type identifier";
match connected_to_journal() {
true => warn!("[WARN] {warn_msg}"),
false => println!("[WARN] {warn_msg}"),
}
continue
}
}
for r#type in &entry.r#type {
let cf_entry = cf_entries.iter().find(|cf_entry| {
cf_entry.name == entry.name && &cf_entry.r#type == r#type
});
if let Some(cf_entry) = cf_entry {
match cf_entry.r#type {
DnsRecordType::A => {
let cf_ip = Ipv4Addr::from_str(cf_entry.content.as_str()).expect("Cloudflare return should always be valid IP");
if Some(cf_ip) == ipv4 {
continue
}
},
DnsRecordType::AAAA => {
let cf_ip = Ipv6Addr::from_str(cf_entry.content.as_str()).expect("Cloudflare return should always be valid IP");
if Some(cf_ip) == ipv6 {
continue
}
},
_ => {},
}
if cf_zone.update(entry, r#type, &cf_entry.id, ipv6, ipv4).is_ok() {
let info_msg = format!("Updated {} DNS Record for entry '{}' in zone '{}'", r#type, entry.name, zone.name);
match connected_to_journal() {
true => info!("[INFO] {info_msg}"),
false => println!("[INFO] {info_msg}"),
}
}
}
else if cf_zone.create(entry, r#type, ipv6, ipv4).is_ok() {
let info_msg = format!("Created {} DNS Record for entry '{}' in zone '{}'", r#type, entry.name, zone.name);
match connected_to_journal() {
true => info!("[INFO] {info_msg}"),
false => println!("[INFO] {info_msg}"),
};
}
}
// handle return values
}
}
}
else {
sleep(std::time::Duration::from_millis(200));
}
}
}