#![cfg(any(feature = "ring", feature = "aws-lc-rs"))]
use crate::{
CAARecord, DnsRecord, DnsRecordType, Error, IntoFqdn, KeyValue, MXRecord, SRVRecord,
TLSARecord, TlsaCertUsage, TlsaMatching, TlsaSelector,
http::{HttpClient, HttpClientBuilder, HttpRequest},
jwt::rsa_sha512_sign,
utils::strip_origin_from_name,
};
use base64::{Engine as _, engine::general_purpose::STANDARD};
use serde::{Deserialize, Serialize};
use std::sync::{Arc, Mutex};
use std::time::{Duration, Instant, SystemTime, UNIX_EPOCH};
const DEFAULT_API_ENDPOINT: &str = "https://api.transip.nl/v6";
#[derive(Clone)]
pub struct TransipProvider {
auth: Arc<Mutex<AuthState>>,
login: String,
private_key_pem: String,
global_key: bool,
endpoint: String,
client: HttpClient,
}
struct AuthState {
token: Option<(String, Instant)>,
}
#[derive(Serialize, Debug)]
struct AuthRequest<'a> {
login: &'a str,
nonce: String,
read_only: bool,
expiration_time: &'a str,
label: String,
global_key: bool,
}
#[derive(Deserialize, Debug)]
struct AuthResponse {
token: String,
}
#[derive(Serialize, Deserialize, Debug, Clone)]
struct DnsEntry {
name: String,
expire: u32,
#[serde(rename = "type")]
record_type: String,
content: String,
}
#[derive(Deserialize, Debug)]
struct DnsEntriesResponse {
#[serde(rename = "dnsEntries", default)]
dns_entries: Vec<DnsEntry>,
}
#[derive(Serialize, Debug)]
struct DnsEntryRequest<'a> {
#[serde(rename = "dnsEntry")]
dns_entry: &'a DnsEntry,
}
impl TransipProvider {
pub(crate) fn new(
login: impl AsRef<str>,
private_key_pem: impl AsRef<str>,
global_key: bool,
timeout: Option<Duration>,
) -> crate::Result<Self> {
let login = login.as_ref().to_string();
let private_key_pem = private_key_pem.as_ref().to_string();
if login.is_empty() || private_key_pem.is_empty() {
return Err(Error::Api(
"TransIP login and private key must not be empty".to_string(),
));
}
let client = HttpClientBuilder::default()
.with_header("Accept", "application/json")
.with_timeout(timeout)
.build();
Ok(Self {
auth: Arc::new(Mutex::new(AuthState { token: None })),
login,
private_key_pem,
global_key,
endpoint: DEFAULT_API_ENDPOINT.to_string(),
client,
})
}
#[cfg(test)]
pub(crate) fn with_endpoint(self, endpoint: impl AsRef<str>) -> Self {
Self {
endpoint: endpoint.as_ref().trim_end_matches('/').to_string(),
..self
}
}
#[cfg(test)]
pub(crate) fn with_cached_token(self, token: impl Into<String>) -> Self {
if let Ok(mut guard) = self.auth.lock() {
guard.token = Some((token.into(), Instant::now() + Duration::from_secs(30 * 60)));
}
self
}
async fn ensure_token(&self) -> crate::Result<String> {
{
let guard = self
.auth
.lock()
.map_err(|_| Error::Client("TransIP token lock poisoned".to_string()))?;
if let Some((token, expiry)) = &guard.token
&& Instant::now() < *expiry
{
return Ok(token.clone());
}
}
let nonce = generate_nonce();
let body = AuthRequest {
login: &self.login,
nonce: nonce.clone(),
read_only: false,
expiration_time: "30 minutes",
label: format!("dns-update-{nonce}"),
global_key: self.global_key,
};
let payload = serde_json::to_string(&body)
.map_err(|e| Error::Serialize(format!("Failed to encode TransIP auth body: {e}")))?;
let signature = rsa_sha512_sign(&self.private_key_pem, payload.as_bytes())
.map_err(|e| Error::Api(format!("Failed to sign TransIP request: {e}")))?;
let signature_b64 = STANDARD.encode(&signature);
let response: AuthResponse = self
.client
.post(format!("{}/auth", self.endpoint))
.with_header("Signature", signature_b64)
.with_raw_body(payload)
.send()
.await?;
let expiry = Instant::now() + Duration::from_secs(25 * 60);
let mut guard = self
.auth
.lock()
.map_err(|_| Error::Client("TransIP token lock poisoned".to_string()))?;
guard.token = Some((response.token.clone(), expiry));
Ok(response.token)
}
fn authed(&self, request: HttpRequest, token: &str) -> HttpRequest {
request.with_header("Authorization", format!("Bearer {token}"))
}
pub(crate) async fn set_rrset(
&self,
name: impl IntoFqdn<'_>,
record_type: DnsRecordType,
ttl: u32,
records: Vec<DnsRecord>,
origin: impl IntoFqdn<'_>,
) -> crate::Result<()> {
check_record_types(record_type, &records)?;
let name = name.into_name();
let domain = origin.into_name();
let subdomain = strip_origin_from_name(&name, &domain, Some("@"));
let token = self.ensure_token().await?;
let target_type = record_type.as_str();
let existing_at_target: Vec<DnsEntry> = self
.list_zone(&token, &domain)
.await?
.into_iter()
.filter(|e| e.name == subdomain && e.record_type == target_type)
.collect();
let desired: Vec<DnsEntry> = records
.into_iter()
.map(|record| {
Ok(DnsEntry {
name: subdomain.clone(),
expire: ttl,
record_type: target_type.to_string(),
content: render_value(record)?,
})
})
.collect::<crate::Result<_>>()?;
let mut existing_pool = existing_at_target;
let mut to_add: Vec<DnsEntry> = Vec::new();
for entry in desired {
if let Some(idx) = existing_pool
.iter()
.position(|e| e.content == entry.content && e.expire == entry.expire)
{
existing_pool.swap_remove(idx);
} else {
to_add.push(entry);
}
}
for entry in existing_pool {
self.delete_entry(&token, &domain, &entry).await?;
}
for entry in to_add {
self.post_entry(&token, &domain, &entry).await?;
}
Ok(())
}
pub(crate) async fn add_to_rrset(
&self,
name: impl IntoFqdn<'_>,
record_type: DnsRecordType,
ttl: u32,
records: Vec<DnsRecord>,
origin: impl IntoFqdn<'_>,
) -> crate::Result<()> {
check_record_types(record_type, &records)?;
if records.is_empty() {
return Ok(());
}
let name = name.into_name();
let domain = origin.into_name();
let subdomain = strip_origin_from_name(&name, &domain, Some("@"));
let token = self.ensure_token().await?;
let target_type = record_type.as_str();
let existing: Vec<DnsEntry> = self
.list_zone(&token, &domain)
.await?
.into_iter()
.filter(|e| e.name == subdomain && e.record_type == target_type)
.collect();
for record in records {
let content = render_value(record)?;
if existing.iter().any(|e| e.content == content) {
continue;
}
let entry = DnsEntry {
name: subdomain.clone(),
expire: ttl,
record_type: target_type.to_string(),
content,
};
self.post_entry(&token, &domain, &entry).await?;
}
Ok(())
}
pub(crate) async fn remove_from_rrset(
&self,
name: impl IntoFqdn<'_>,
record_type: DnsRecordType,
records: Vec<DnsRecord>,
origin: impl IntoFqdn<'_>,
) -> crate::Result<()> {
check_record_types(record_type, &records)?;
if records.is_empty() {
return Ok(());
}
let name = name.into_name();
let domain = origin.into_name();
let subdomain = strip_origin_from_name(&name, &domain, Some("@"));
let token = self.ensure_token().await?;
let target_type = record_type.as_str();
let existing: Vec<DnsEntry> = self
.list_zone(&token, &domain)
.await?
.into_iter()
.filter(|e| e.name == subdomain && e.record_type == target_type)
.collect();
let mut targets: Vec<String> = Vec::with_capacity(records.len());
for record in records {
targets.push(render_value(record)?);
}
for entry in existing {
if targets.iter().any(|t| t == &entry.content) {
self.delete_entry(&token, &domain, &entry).await?;
}
}
Ok(())
}
pub(crate) async fn list_rrset(
&self,
name: impl IntoFqdn<'_>,
record_type: DnsRecordType,
origin: impl IntoFqdn<'_>,
) -> crate::Result<Vec<DnsRecord>> {
let name = name.into_name();
let domain = origin.into_name();
let subdomain = strip_origin_from_name(&name, &domain, Some("@"));
let token = self.ensure_token().await?;
let target_type = record_type.as_str();
let entries = self.list_zone(&token, &domain).await?;
let mut out = Vec::new();
for entry in entries {
if entry.name == subdomain && entry.record_type == target_type {
out.push(parse_dns_entry(&entry, record_type)?);
}
}
Ok(out)
}
async fn list_zone(&self, token: &str, domain: &str) -> crate::Result<Vec<DnsEntry>> {
let url = format!("{}/domains/{}/dns", self.endpoint, domain);
let entries: DnsEntriesResponse = self.authed(self.client.get(url), token).send().await?;
Ok(entries.dns_entries)
}
async fn post_entry(&self, token: &str, domain: &str, entry: &DnsEntry) -> crate::Result<()> {
let url = format!("{}/domains/{}/dns", self.endpoint, domain);
self.authed(self.client.post(url), token)
.with_body(DnsEntryRequest { dns_entry: entry })?
.send_raw()
.await
.map(|_| ())
}
async fn delete_entry(&self, token: &str, domain: &str, entry: &DnsEntry) -> crate::Result<()> {
let url = format!("{}/domains/{}/dns", self.endpoint, domain);
self.authed(self.client.delete(url), token)
.with_body(DnsEntryRequest { dns_entry: entry })?
.send_raw()
.await
.map(|_| ())
}
}
pub(crate) fn generate_nonce() -> String {
let now = SystemTime::now()
.duration_since(UNIX_EPOCH)
.map(|d| d.as_nanos())
.unwrap_or(0) as u64;
format!("dnsu{now:016x}")
}
fn check_record_types(expected: DnsRecordType, records: &[DnsRecord]) -> crate::Result<()> {
for record in records {
if record.as_type() != expected {
return Err(Error::Api(format!(
"RRSet record type mismatch: expected {}, got {}",
expected.as_str(),
record.as_type().as_str(),
)));
}
}
Ok(())
}
fn render_value(record: DnsRecord) -> crate::Result<String> {
Ok(match record {
DnsRecord::A(addr) => addr.to_string(),
DnsRecord::AAAA(addr) => addr.to_string(),
DnsRecord::CNAME(content) => content,
DnsRecord::NS(content) => content,
DnsRecord::MX(mx) => format!("{} {}", mx.priority, mx.exchange),
DnsRecord::TXT(content) => content,
DnsRecord::SRV(srv) => format!(
"{} {} {} {}",
srv.priority, srv.weight, srv.port, srv.target
),
DnsRecord::TLSA(tlsa) => tlsa.to_string(),
DnsRecord::CAA(caa) => {
let (flags, tag, value) = caa.decompose();
format!("{flags} {tag} \"{value}\"")
}
})
}
fn parse_dns_entry(entry: &DnsEntry, record_type: DnsRecordType) -> crate::Result<DnsRecord> {
match record_type {
DnsRecordType::A => {
let addr = entry
.content
.parse()
.map_err(|e| Error::Parse(format!("invalid A address {}: {e}", entry.content)))?;
Ok(DnsRecord::A(addr))
}
DnsRecordType::AAAA => {
let addr = entry.content.parse().map_err(|e| {
Error::Parse(format!("invalid AAAA address {}: {e}", entry.content))
})?;
Ok(DnsRecord::AAAA(addr))
}
DnsRecordType::CNAME => Ok(DnsRecord::CNAME(entry.content.clone())),
DnsRecordType::NS => Ok(DnsRecord::NS(entry.content.clone())),
DnsRecordType::TXT => Ok(DnsRecord::TXT(entry.content.clone())),
DnsRecordType::MX => {
let mut parts = entry.content.splitn(2, char::is_whitespace);
let priority_token = parts
.next()
.ok_or_else(|| Error::Parse(format!("invalid MX content: {}", entry.content)))?;
let exchange = parts
.next()
.ok_or_else(|| Error::Parse(format!("invalid MX content: {}", entry.content)))?
.trim()
.to_string();
let priority: u16 = priority_token
.parse()
.map_err(|e| Error::Parse(format!("invalid MX priority: {e}")))?;
Ok(DnsRecord::MX(MXRecord { priority, exchange }))
}
DnsRecordType::SRV => {
let mut parts = entry.content.split_whitespace();
let priority: u16 = parts
.next()
.ok_or_else(|| Error::Parse(format!("invalid SRV content: {}", entry.content)))?
.parse()
.map_err(|e| Error::Parse(format!("invalid SRV priority: {e}")))?;
let weight: u16 = parts
.next()
.ok_or_else(|| Error::Parse(format!("invalid SRV content: {}", entry.content)))?
.parse()
.map_err(|e| Error::Parse(format!("invalid SRV weight: {e}")))?;
let port: u16 = parts
.next()
.ok_or_else(|| Error::Parse(format!("invalid SRV content: {}", entry.content)))?
.parse()
.map_err(|e| Error::Parse(format!("invalid SRV port: {e}")))?;
let target = parts
.next()
.ok_or_else(|| Error::Parse(format!("invalid SRV content: {}", entry.content)))?
.to_string();
Ok(DnsRecord::SRV(SRVRecord {
priority,
weight,
port,
target,
}))
}
DnsRecordType::TLSA => {
let mut parts = entry.content.split_whitespace();
let usage: u8 = parts
.next()
.ok_or_else(|| Error::Parse(format!("invalid TLSA content: {}", entry.content)))?
.parse()
.map_err(|e| Error::Parse(format!("invalid TLSA usage: {e}")))?;
let selector: u8 = parts
.next()
.ok_or_else(|| Error::Parse(format!("invalid TLSA content: {}", entry.content)))?
.parse()
.map_err(|e| Error::Parse(format!("invalid TLSA selector: {e}")))?;
let matching: u8 = parts
.next()
.ok_or_else(|| Error::Parse(format!("invalid TLSA content: {}", entry.content)))?
.parse()
.map_err(|e| Error::Parse(format!("invalid TLSA matching: {e}")))?;
let hex = parts
.next()
.ok_or_else(|| Error::Parse(format!("invalid TLSA content: {}", entry.content)))?;
Ok(DnsRecord::TLSA(TLSARecord {
cert_usage: tlsa_cert_usage_from_u8(usage)?,
selector: tlsa_selector_from_u8(selector)?,
matching: tlsa_matching_from_u8(matching)?,
cert_data: decode_hex(hex)?,
}))
}
DnsRecordType::CAA => Ok(DnsRecord::CAA(parse_caa_content(&entry.content)?)),
}
}
fn parse_caa_content(content: &str) -> crate::Result<CAARecord> {
let trimmed = content.trim();
let mut parts = trimmed.splitn(3, char::is_whitespace);
let flags_token = parts
.next()
.ok_or_else(|| Error::Parse(format!("invalid CAA value: {trimmed}")))?;
let tag_token = parts
.next()
.ok_or_else(|| Error::Parse(format!("invalid CAA value: {trimmed}")))?;
let raw_value = parts.next().unwrap_or("").trim();
let flags: u8 = flags_token
.parse()
.map_err(|e| Error::Parse(format!("invalid CAA flags: {e}")))?;
let issuer_critical = flags & 0x80 != 0;
let value = raw_value
.strip_prefix('"')
.and_then(|s| s.strip_suffix('"'))
.unwrap_or(raw_value)
.to_string();
match tag_token {
"issue" => {
let (name, options) = split_caa_value(&value);
Ok(CAARecord::Issue {
issuer_critical,
name,
options,
})
}
"issuewild" => {
let (name, options) = split_caa_value(&value);
Ok(CAARecord::IssueWild {
issuer_critical,
name,
options,
})
}
"iodef" => Ok(CAARecord::Iodef {
issuer_critical,
url: value,
}),
other => Err(Error::Parse(format!("unknown CAA tag: {other}"))),
}
}
fn split_caa_value(value: &str) -> (Option<String>, Vec<KeyValue>) {
let mut parts = value.split(';').map(str::trim);
let name_part = parts.next().unwrap_or("").trim().to_string();
let name = if name_part.is_empty() {
None
} else {
Some(name_part)
};
let options = parts
.filter(|p| !p.is_empty())
.map(|p| match p.split_once('=') {
Some((k, v)) => KeyValue {
key: k.trim().to_string(),
value: v.trim().to_string(),
},
None => KeyValue {
key: p.trim().to_string(),
value: String::new(),
},
})
.collect();
(name, options)
}
fn decode_hex(hex: &str) -> crate::Result<Vec<u8>> {
if !hex.len().is_multiple_of(2) {
return Err(Error::Parse(format!("invalid hex string: {hex}")));
}
(0..hex.len())
.step_by(2)
.map(|i| {
u8::from_str_radix(&hex[i..i + 2], 16)
.map_err(|e| Error::Parse(format!("invalid hex byte: {e}")))
})
.collect()
}
fn tlsa_cert_usage_from_u8(value: u8) -> crate::Result<TlsaCertUsage> {
Ok(match value {
0 => TlsaCertUsage::PkixTa,
1 => TlsaCertUsage::PkixEe,
2 => TlsaCertUsage::DaneTa,
3 => TlsaCertUsage::DaneEe,
255 => TlsaCertUsage::Private,
_ => return Err(Error::Parse(format!("unknown TLSA cert usage: {value}"))),
})
}
fn tlsa_selector_from_u8(value: u8) -> crate::Result<TlsaSelector> {
Ok(match value {
0 => TlsaSelector::Full,
1 => TlsaSelector::Spki,
255 => TlsaSelector::Private,
_ => return Err(Error::Parse(format!("unknown TLSA selector: {value}"))),
})
}
fn tlsa_matching_from_u8(value: u8) -> crate::Result<TlsaMatching> {
Ok(match value {
0 => TlsaMatching::Raw,
1 => TlsaMatching::Sha256,
2 => TlsaMatching::Sha512,
255 => TlsaMatching::Private,
_ => return Err(Error::Parse(format!("unknown TLSA matching: {value}"))),
})
}