Rewrite in Rust

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Neshura 2023-02-26 01:10:39 +01:00
parent 331f0c092c
commit e76c82492f
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2
.gitignore vendored
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# Default ignores
target/
venv/
.idea/
.vscode/
config.json

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Cargo.lock generated Normal file

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Cargo.toml Normal file
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[package]
name = "cloudflare-dns-updater"
version = "0.1.0"
edition = "2021"
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
[dependencies]
reqwest = { version = "0.11.14", features = ["blocking", "json"] }
serde = "1.0.152"
serde_derive = "1.0.152"
serde_json = "1.0.93"
strum_macros = "0.24.3"

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src/cloudflare/mod.rs Normal file
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use reqwest::{blocking::{Response, Client}, Url};
use serde_derive::{Deserialize, Serialize};
use reqwest::header::{HeaderMap, HeaderValue};
use std::{string::String, collections::HashMap};
use strum_macros::{Display, IntoStaticStr};
const API_BASE: &str = "https://api.cloudflare.com/client/v4/";
#[derive(Serialize, Deserialize)]
struct CloudflareDnsZone {
result: Vec<CloudflareDnsEntry>,
success: bool
}
#[derive(Serialize, Deserialize, PartialEq, Debug, Clone, Copy)]
#[derive(Display, IntoStaticStr)]
pub enum CloudflareDnsType {
#[strum(serialize = "A")]
A,
#[strum(serialize = "AAAA")]
AAAA,
TXT,
MX
}
#[derive(Serialize, Deserialize)]
pub struct CloudflareDnsEntry {
id: String,
zone_id: String,
pub name: String,
pub r#type: CloudflareDnsType,
content: String,
proxied: bool
}
impl CloudflareDnsEntry {
pub fn is_equal(&self, other_entry: &String) -> bool {
return if &self.name == other_entry { true } else { false };
}
pub fn is_ip_new(&self, other_entry: &String) -> bool {
return if &self.content == other_entry { false } else { true };
}
}
pub(crate) struct Instance {
api_key: String,
pub dns_entries: Vec<CloudflareDnsEntry>,
dns_email: String
}
impl Instance {
pub fn new(key: &String) -> Instance {
Instance {
api_key: key.clone(),
dns_entries: Vec::new(),
dns_email: "".to_string()
}
}
/// Loads all DNS entires in a Zone as a [`CloudflareDnsEntry`] Vector
///
/// * `email` : E-Mail Address associated with the Zone, required for [`generate_headers()`]
/// * `zone_id` : Zone to be used for the Request
pub fn load_entries(&mut self, email: &String, zone_id: &String) {
self.dns_email = email.clone();
let endpoint = format!("{}zones/{}/dns_records", API_BASE, zone_id);
let api_response = self.get(&endpoint);
let entries = match api_response.json::<CloudflareDnsZone>() {
Ok(data) => {data},
Err(e) => panic!("{:#?}", e)
};
for entry in entries.result {
self.dns_entries.append(&mut vec!(entry));
}
}
/// Shorthand for Cloudflare API Requests
///
/// Automatically appends Auth Headers and parses the URL
///
/// * `url` : URL for the request, will be parsed to [`Url`]
/// * `email` : E-Mail Address associated with the Zone, required for [`generate_headers()`]
fn get(&self, url: &str) -> Response {
let url_parsed = match Url::parse(url) {
Ok(url) => {url},
Err(e) => panic!("{:#?}", e)
};
let client = Client::new();
let res = client.get(url_parsed)
.headers(self.generate_headers())
.send();
let response = match res {
Ok(res) => {res},
Err(e) => panic!("{:#?}", e)
};
response
}
fn put(&self, url: &str, data: &HashMap<&str, &str>) -> Response {
let url_parsed = match Url::parse(url) {
Ok(url) => {url},
Err(e) => panic!("{:#?}", e)
};
let client = Client::new();
let res = client.put(url_parsed)
.headers(self.generate_headers())
.json(data)
.send();
let response = match res {
Ok(res) => {res},
Err(e) => panic!("{:#?}", e)
};
response
}
fn post(&self, url: &str, data: &HashMap<&str, &str>) -> Response {
let url_parsed = match Url::parse(url) {
Ok(url) => {url},
Err(e) => panic!("{:#?}", e)
};
let client = Client::new();
let res = client.post(url_parsed)
.headers(self.generate_headers())
.json(data)
.send();
let response = match res {
Ok(res) => {res},
Err(e) => panic!("{:#?}", e)
};
response
}
pub fn update_entry(&self, entry: &CloudflareDnsEntry, new_ip: &String) -> bool {
let endpoint = format!("{}zones/{}/dns_records/{}", API_BASE, entry.zone_id, entry.id);
let mut json_body = HashMap::new();
json_body.insert("type", entry.r#type.clone().into());
json_body.insert("name", entry.name.as_ref());
json_body.insert("content", new_ip);
json_body.insert("ttl", "1");
let api_response = self.put(&endpoint, &json_body);
let data = api_response.json::<serde_json::Value>().unwrap();
let ret = data["success"].as_bool().unwrap();
ret
}
pub fn create_entry(&self, zone_id: &String, r#type: &str, name: &str, ip: &String) -> bool {
let endpoint = format!("{}zones/{}/dns_records", API_BASE, zone_id);
let mut json_body = HashMap::new();
json_body.insert("type", r#type);
json_body.insert("name", name);
json_body.insert("content", ip);
json_body.insert("ttl", "1");
let api_response = self.post(&endpoint, &json_body);
let data = api_response.json::<serde_json::Value>().unwrap();
let ret = data["success"].as_bool().unwrap();
ret
}
/// Generate Cloudflare API v4 Auth Headers
fn generate_headers(&self) -> HeaderMap {
let mut headers = HeaderMap::new();
headers.insert("X-Auth-Key", HeaderValue::from_str(self.api_key.as_ref()).unwrap());
headers.insert("X-Auth-Email", HeaderValue::from_str(self.dns_email.as_ref()).unwrap());
headers
}
}

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src/main.rs Normal file
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use serde_derive::{Deserialize, Serialize};
use reqwest::blocking::get;
use std::fs;
mod cloudflare;
#[derive(Serialize, Deserialize)]
struct DnsEntry {
name: String,
type4: bool,
type6: bool,
interface: Option<String>
}
#[derive(Serialize, Deserialize)]
struct DnsZone {
email: String,
name: String,
id: String,
dns_entries: Vec<DnsEntry>
}
#[derive(Serialize, Deserialize)]
struct DnsConfig {
ipv6_interface: String,
api_key: String,
zones: Vec<DnsZone>
}
impl DnsConfig {
fn new() -> DnsConfig {
DnsConfig {
ipv6_interface: "".to_string(),
api_key: "".to_string(),
zones: Vec::new() }
}
fn load(&mut self) {
let file_contents = match fs::read_to_string("config.json") {
Ok(data) => {data},
Err(e) => panic!("{:#?}", e)
};
let config_parse: DnsConfig = match serde_json::from_str(&file_contents) {
Ok(data) => {data},
Err(e) => panic!("{:#?}", e)
};
*self = config_parse;
}
}
struct Ips {
ipv4: String,
ipv6base: String
}
impl Ips {
fn new() -> Ips {
Ips {
ipv4: "0.0.0.0".to_string(),
ipv6base: ":".to_string()
}
}
fn get(&mut self, ipv6_interface: &str) {
let ipv4uri = "https://am.i.mullvad.net/ip";
let ipv6uri = "https://ipv6.am.i.mullvad.net/ip";
let response = get(ipv4uri);
match response {
Ok(data) => self.ipv4 = data.text().expect("0.0.0.0").trim_end().to_owned(),
Err(e) => panic!("{:#?}", e)
}
let response = get(ipv6uri);
match response {
Ok(data) => {
let ipv6 = data.text().expect(":");
let stripped = match ipv6.strip_suffix(ipv6_interface) {
Some(string) => {string.to_string()},
None => {":".to_string()}
};
self.ipv6base = stripped;
},
Err(e) => panic!("{:#?}", e)
}
}
}
fn main() {
let mut config = DnsConfig::new();
config.load();
let mut ips = Ips::new();
ips.get(&config.ipv6_interface);
let mut created4: u16 = 0;
let mut updated4: u16 = 0;
let mut unchanged4: u16 = 0;
let mut error4: u16 = 0;
let mut created6: u16 = 0;
let mut updated6: u16 = 0;
let mut unchanged6: u16 = 0;
let mut error6: u16 = 0;
for zone in config.zones {
let mut agent = cloudflare::Instance::new(&config.api_key);
agent.load_entries(&zone.email, &zone.id);
for entry in zone.dns_entries {
let mut found4 = false;
let mut found6 = false;
for cloudflare_entry in &agent.dns_entries {
if cloudflare_entry.is_equal(&entry.name) {
if cloudflare_entry.r#type == cloudflare::CloudflareDnsType::A && entry.type4 {
found4 = true;
if cloudflare_entry.is_ip_new(&ips.ipv4) {
let success = agent.update_entry(cloudflare_entry, &ips.ipv4);
if success { updated4 += 1 } else { error4 += 1 }
}
else {
unchanged4 += 1;
}
}
if cloudflare_entry.r#type == cloudflare::CloudflareDnsType::AAAA && entry.type6 {
found6 = true;
let ipv6 = ips.ipv6base.clone() + entry.interface.as_ref().unwrap();
if cloudflare_entry.is_ip_new(&ipv6) {
let success = agent.update_entry(cloudflare_entry, &ipv6);
if success { updated6 += 1 } else { error6 += 1 }
}
else {
unchanged6 += 1;
}
}
}
//println!("{:#?}", entry.subdomain); // DEBUG
}
if !found4 && entry.type4 {
let success = agent.create_entry(&zone.id, "A", &entry.name, &ips.ipv4);
if success { created4 += 1 };
}
if !found6 && entry.type6 {
let ipv6 = ips.ipv6base.clone() + entry.interface.as_ref().unwrap();
let success = agent.create_entry(&zone.id, "AAAA", &entry.name, &ipv6);
if success { created6 += 1 };
}
}
//println!("{:#?}", zone.domain); // DEBUG
}
println!("++++A Records+++");
println!("{} created", created4);
println!("{} updated", updated4);
println!("{} unchanged", unchanged4);
println!("{} errors", error4);
println!("++AAAA Records++");
println!("{} created", created6);
println!("{} updated", updated6);
println!("{} unchanged", unchanged6);
println!("{} errors", error6);
}