360 lines
13 KiB
Rust
360 lines
13 KiB
Rust
use std::collections::HashMap;
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use std::env;
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use std::env::VarError;
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use std::error::Error;
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use std::net::{Ipv4Addr, Ipv6Addr};
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use log::{error, warn};
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use reqwest::header::{HeaderMap, HeaderValue};
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use reqwest::{Url};
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use reqwest::blocking::{Response, Client};
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use serde_derive::{Deserialize, Serialize};
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use strum_macros::{Display, IntoStaticStr};
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use systemd_journal_logger::connected_to_journal;
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use url::ParseError;
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use crate::config::{ZoneConfig, ZoneEntry};
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const API_BASE: &str = "https://api.cloudflare.com/client/v4";
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#[derive(Serialize, Deserialize, Debug)]
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struct CloudflareApiResults {
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result: Vec<CloudflareDnsRecord>,
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success: bool,
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}
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#[derive(Serialize, Deserialize, Debug)]
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struct CloudflareApiResult {
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success: bool,
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}
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pub(crate) struct CloudflareZone {
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name: String,
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email: String,
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key: String,
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id: String,
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}
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impl CloudflareZone {
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pub(crate) fn new(zone: &ZoneConfig) -> Result<Self, VarError> {
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let key = env::var("CF_API_TOKEN")?;
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Ok(Self {
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name: zone.name.clone(),
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email: zone.email.clone(),
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key,
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id: zone.id.clone(),
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})
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}
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fn generate_auth_headers(&self) -> HeaderMap {
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let mut headers = HeaderMap::new();
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headers.insert(
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"X-Auth-Email",
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HeaderValue::from_str(self.email.as_str()).expect("After CloudflareZone gets created the required Values should exist"),
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);
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headers.insert(
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"X-Auth-Key",
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HeaderValue::from_str(self.key.as_str()).expect("After CloudflareZone gets created the required Values should exist"),
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);
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headers
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}
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pub(crate) fn get_entries(&self) -> Result<Vec<CloudflareDnsRecord>, ()> {
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let endpoint = format!("{}/zones/{}/dns_records", API_BASE, self.id);
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match self.get(&endpoint) {
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Ok(response) => {
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if response.status().is_success() {
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let entries = match response.json::<CloudflareApiResults>() {
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Ok(data) => data,
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Err(e) => {
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let err_msg = format!("Unable to parse API response. Error: {e}");
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match connected_to_journal() {
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true => error!("[ERROR] {err_msg}"),
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false => eprintln!("[ERROR] {err_msg}"),
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}
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return Err(())
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}
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};
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Ok(entries.result)
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} else {
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let err_msg = format!("Unable to fetch Cloudflare Zone Entries for {}. Error: {}",self.name ,response.status());
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match connected_to_journal() {
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true => error!("[ERROR] {err_msg}"),
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false => eprintln!("[ERROR] {err_msg}"),
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}
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Err(())
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}
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}
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Err(e) => {
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let err_msg = format!("Unable to access Cloudflare API. Error: {e}");
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match connected_to_journal() {
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true => error!("[ERROR] {err_msg}"),
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false => eprintln!("[ERROR] {err_msg}"),
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}
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Err(())
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},
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}
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}
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pub(crate) fn update(&self, entry: &ZoneEntry, r#type: &DnsRecordType, id: &String, ipv6: Option<Ipv6Addr>, ipv4: Option<Ipv4Addr>) -> Result<(), ()> {
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let endpoint = format!("{}/zones/{}/dns_records/{}", API_BASE, self.id, id);
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return match r#type {
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DnsRecordType::A => {
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if let Some(ip) = ipv4 {
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let json_body = self.create_body("A", &entry.name, ip.to_string().as_str());
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match self.put(&endpoint, &json_body) {
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Ok(response) => {
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self.validate_response(response)
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},
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Err(e) => {
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let err_msg = format!("Unable to access Cloudflare API. Error: {e}");
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match connected_to_journal() {
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true => error!("[ERROR] {err_msg}"),
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false => eprintln!("[ERROR] {err_msg}"),
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}
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Err(())
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}
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}
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} else {
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let err_msg = "Missing IPv4 for Update.";
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match connected_to_journal() {
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true => error!("[ERROR] {err_msg}"),
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false => eprintln!("[ERROR] {err_msg}"),
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}
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Err(())
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}
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},
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DnsRecordType::AAAA => {
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if let Some(ip) = ipv6 {
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let json_body = self.create_body("AAAA", &entry.name, ip.to_string().as_str());
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match self.put(&endpoint, &json_body) {
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Ok(response) => {
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self.validate_response(response)
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},
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Err(e) => {
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let err_msg = format!("Unable to access Cloudflare API. Error: {e}");
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match connected_to_journal() {
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true => error!("[ERROR] {err_msg}"),
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false => eprintln!("[ERROR] {err_msg}"),
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}
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Err(())
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}
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}
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} else {
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let err_msg = "Missing IPv6 for Update.";
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match connected_to_journal() {
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true => error!("[ERROR] {err_msg}"),
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false => eprintln!("[ERROR] {err_msg}"),
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}
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Err(())
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}
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},
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_ => {
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let warn_msg = "Config contains unsupported type identifier";
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match connected_to_journal() {
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true => warn!("[WARN] {warn_msg}"),
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false => println!("[WARN] {warn_msg}"),
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}
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Err(())
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}
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}
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}
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pub(crate) fn create(&self, entry: &ZoneEntry, r#type: &DnsRecordType, ipv6: Option<Ipv6Addr>, ipv4: Option<Ipv4Addr>) -> Result<(), ()> {
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let endpoint = format!("{}/zones/{}/dns_records", API_BASE, self.id);
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return match r#type {
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DnsRecordType::A => {
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if let Some(ip) = ipv4 {
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let json_body = self.create_body("A", &entry.name, ip.to_string().as_str());
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match self.post(&endpoint, &json_body) {
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Ok(response) => {
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self.validate_response(response)
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},
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Err(e) => {
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let err_msg = format!("Unable to access Cloudflare API. Error: {e}");
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match connected_to_journal() {
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true => error!("[ERROR] {err_msg}"),
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false => eprintln!("[ERROR] {err_msg}"),
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}
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Err(())
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}
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}
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} else {
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let err_msg = "Missing IPv4 for Update.";
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match connected_to_journal() {
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true => error!("[ERROR] {err_msg}"),
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false => eprintln!("[ERROR] {err_msg}"),
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}
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Err(())
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}
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},
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DnsRecordType::AAAA => {
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if let Some(ip) = ipv6 {
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let json_body = self.create_body("AAAA", &entry.name, ip.to_string().as_str());
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match self.post(&endpoint, &json_body) {
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Ok(response) => {
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self.validate_response(response)
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},
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Err(e) => {
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let err_msg = format!("Unable to access Cloudflare API. Error: {e}");
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match connected_to_journal() {
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true => error!("[ERROR] {err_msg}"),
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false => eprintln!("[ERROR] {err_msg}"),
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}
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Err(())
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}
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}
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} else {
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let err_msg = "Missing IPv6 for Update.";
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match connected_to_journal() {
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true => error!("[ERROR] {err_msg}"),
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false => eprintln!("[ERROR] {err_msg}"),
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}
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Err(())
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}
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},
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_ => {
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let warn_msg = "Config contains unsupported type identifier";
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match connected_to_journal() {
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true => warn!("[WARN] {warn_msg}"),
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false => println!("[WARN] {warn_msg}"),
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}
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Err(())
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}
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}
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}
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fn get(&self, url: &str) -> Result<Response, Box<dyn Error>> {
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let url_parsed = self.parse_url(url)?;
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match Client::new()
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.get(url_parsed)
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.headers(self.generate_auth_headers())
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.send() {
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Ok(result) => Ok(result),
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Err(e) => Err(Box::new(e)),
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}
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}
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fn post(&self, url: &str, data: &HashMap<String, String>) -> Result<Response, Box<dyn Error>> {
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let url_parsed = self.parse_url(url)?;
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match Client::new()
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.post(url_parsed)
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.headers(self.generate_auth_headers())
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.json(data)
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.send() {
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Ok(result) => Ok(result),
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Err(e) => Err(Box::new(e)),
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}
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}
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fn put(&self, url: &str, data: &HashMap<String, String>) -> Result<Response, Box<dyn Error>> {
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let url_parsed = self.parse_url(url)?;
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match Client::new()
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.put(url_parsed)
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.headers(self.generate_auth_headers())
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.json(data)
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.send() {
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Ok(result) => Ok(result),
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Err(e) => Err(Box::new(e)),
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}
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}
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fn parse_url(&self, input: &str) -> Result<Url, ParseError> {
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match Url::parse(input) {
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Ok(url) => Ok(url),
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Err(e) => {
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let err_msg = format!("Unable to parse URL. Error: {}", e);
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match connected_to_journal() {
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true => error!("[ERROR] {err_msg}"),
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false => eprintln!("[ERROR] {err_msg}"),
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}
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Err(e)
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}
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}
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}
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fn create_body(&self, r#type: &str, name: &str, ip: &str) -> HashMap<String, String> {
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let mut body = HashMap::new();
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body.insert("type".to_owned(), r#type.to_owned());
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body.insert("name".to_owned(), name.to_owned());
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body.insert("content".to_owned(), ip.to_owned());
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body
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}
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fn validate_response(&self, response: Response) -> Result<(), ()> {
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if response.status().is_success() {
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let data = match response.json::<CloudflareApiResult>() {
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Ok(data) => data,
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Err(e) => {
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let err_msg = format!("Unable to parse API response. Error: {e}");
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match connected_to_journal() {
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true => error!("[ERROR] {err_msg}"),
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false => eprintln!("[ERROR] {err_msg}"),
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}
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return Err(())
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}
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};
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match data.success {
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true => Ok(()),
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false => {
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let err_msg = format!("Unexpected error while updating DNS record. Info: {:?}", data);
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match connected_to_journal() {
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true => error!("[ERROR] {err_msg}"),
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false => eprintln!("[ERROR] {err_msg}"),
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}
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Err(())
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}
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}
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} else {
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let err_msg = format!("Unable to post/put Cloudflare DNS entry. Error: {}", response.status());
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match connected_to_journal() {
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true => error!("[ERROR] {err_msg}"),
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false => eprintln!("[ERROR] {err_msg}"),
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}
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Err(())
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}
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}
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}
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#[derive(Serialize, Deserialize, PartialEq, Debug, Clone, Copy, Display, IntoStaticStr)]
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#[allow(clippy::upper_case_acronyms)]
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pub(crate) enum DnsRecordType {
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A,
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AAAA,
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CAA,
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CERT,
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CNAME,
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DNSKEY,
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DS,
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HTTPS,
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LOC,
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MX,
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NAPTR,
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NS,
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PTR,
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SMIMEA,
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SRV,
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SSHFP,
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SVCB,
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TLSA,
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TXT,
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URI
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}
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#[derive(Serialize, Deserialize, PartialEq, Debug)]
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pub(crate) struct CloudflareDnsRecord {
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pub(crate) id: String,
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pub(crate) name: String,
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pub(crate) r#type: DnsRecordType,
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pub(crate) content: String
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} |