use crate::{
CAARecord, DnsRecord, DnsRecordType, Error, IntoFqdn, KeyValue, MXRecord, SRVRecord,
http::{HttpClient, HttpClientBuilder},
utils::strip_origin_from_name,
};
use base64::{Engine, engine::general_purpose::STANDARD as BASE64};
use serde::{Deserialize, Serialize};
use std::time::Duration;
#[derive(Clone)]
pub struct NameDotComProvider {
client: HttpClient,
endpoint: String,
}
#[derive(Serialize, Debug)]
struct CreateRecord<'a> {
host: &'a str,
#[serde(rename = "type")]
record_type: &'a str,
answer: String,
ttl: u32,
#[serde(skip_serializing_if = "Option::is_none")]
priority: Option<u16>,
}
#[derive(Deserialize, Debug, Clone)]
struct Record {
id: i64,
#[serde(default)]
host: Option<String>,
#[serde(rename = "type")]
record_type: String,
#[serde(default)]
answer: Option<String>,
#[serde(default)]
priority: Option<u16>,
}
#[derive(Deserialize, Debug)]
struct ListRecordsResponse {
#[serde(default)]
records: Vec<Record>,
#[serde(default, rename = "nextPage")]
next_page: u32,
}
#[derive(Debug, Clone, PartialEq, Eq)]
struct NormalizedRecord {
answer: String,
priority: Option<u16>,
}
const DEFAULT_API_ENDPOINT: &str = "https://api.name.com";
impl NameDotComProvider {
pub(crate) fn new(
username: impl AsRef<str>,
api_token: impl AsRef<str>,
timeout: Option<Duration>,
) -> crate::Result<Self> {
let username = username.as_ref();
let token = api_token.as_ref();
if username.is_empty() || token.is_empty() {
return Err(Error::Api(
"Name.com username and API token must not be empty".to_string(),
));
}
let credentials = BASE64.encode(format!("{username}:{token}"));
let client = HttpClientBuilder::default()
.with_header("Authorization", format!("Basic {credentials}"))
.with_timeout(timeout)
.build();
Ok(Self {
client,
endpoint: DEFAULT_API_ENDPOINT.to_string(),
})
}
#[cfg(test)]
pub(crate) fn with_endpoint(self, endpoint: impl AsRef<str>) -> Self {
Self {
endpoint: endpoint.as_ref().to_string(),
..self
}
}
pub(crate) async fn set_rrset(
&self,
name: impl IntoFqdn<'_>,
record_type: DnsRecordType,
ttl: u32,
records: Vec<DnsRecord>,
origin: impl IntoFqdn<'_>,
) -> crate::Result<()> {
validate_type(record_type)?;
let name = name.into_name();
let domain = origin.into_name();
let host = strip_origin_from_name(&name, &domain, Some(""));
let desired = build_normalized(record_type, records)?;
let existing = self.list_at(&domain, &host, record_type).await?;
let mut existing_pool: Vec<(i64, NormalizedRecord)> = existing.into_iter().collect();
let mut to_add: Vec<NormalizedRecord> = Vec::new();
for want in desired {
if let Some(idx) = existing_pool.iter().position(|(_, have)| have == &want) {
existing_pool.swap_remove(idx);
} else {
to_add.push(want);
}
}
for (id, _) in existing_pool {
self.delete_record(&domain, id).await?;
}
for want in to_add {
self.create_record(&domain, &host, record_type, want, ttl)
.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<()> {
if records.is_empty() {
return Ok(());
}
validate_type(record_type)?;
let name = name.into_name();
let domain = origin.into_name();
let host = strip_origin_from_name(&name, &domain, Some(""));
let desired = build_normalized(record_type, records)?;
let existing = self.list_at(&domain, &host, record_type).await?;
for want in desired {
if existing.iter().any(|(_, have)| have == &want) {
continue;
}
self.create_record(&domain, &host, record_type, want, ttl)
.await?;
}
Ok(())
}
pub(crate) async fn remove_from_rrset(
&self,
name: impl IntoFqdn<'_>,
record_type: DnsRecordType,
records: Vec<DnsRecord>,
origin: impl IntoFqdn<'_>,
) -> crate::Result<()> {
if records.is_empty() {
return Ok(());
}
validate_type(record_type)?;
let name = name.into_name();
let domain = origin.into_name();
let host = strip_origin_from_name(&name, &domain, Some(""));
let to_remove = build_normalized(record_type, records)?;
let existing = self.list_at(&domain, &host, record_type).await?;
for want in to_remove {
if let Some((id, _)) = existing.iter().find(|(_, have)| have == &want) {
self.delete_record(&domain, *id).await?;
}
}
Ok(())
}
pub(crate) async fn list_rrset(
&self,
name: impl IntoFqdn<'_>,
record_type: DnsRecordType,
origin: impl IntoFqdn<'_>,
) -> crate::Result<Vec<DnsRecord>> {
validate_type(record_type)?;
let name = name.into_name();
let domain = origin.into_name();
let host = strip_origin_from_name(&name, &domain, Some(""));
let existing = self.list_at(&domain, &host, record_type).await?;
existing
.into_iter()
.map(|(_, normalized)| normalized_to_record(record_type, normalized))
.collect()
}
async fn list_at(
&self,
domain: &str,
host: &str,
record_type: DnsRecordType,
) -> crate::Result<Vec<(i64, NormalizedRecord)>> {
let type_str = record_type.as_str();
let target_host = normalize_host(host);
let mut out: Vec<(i64, NormalizedRecord)> = Vec::new();
let mut page: u32 = 1;
loop {
let response = self
.client
.get(format!(
"{}/v4/domains/{}/records?page={}",
self.endpoint, domain, page
))
.send::<ListRecordsResponse>()
.await?;
for r in response.records {
if r.record_type != type_str {
continue;
}
let r_host = normalize_host(r.host.as_deref().unwrap_or(""));
if r_host != target_host {
continue;
}
let answer = r.answer.unwrap_or_default();
out.push((
r.id,
NormalizedRecord {
answer,
priority: r.priority,
},
));
}
if response.next_page == 0 {
return Ok(out);
}
page = response.next_page;
}
}
async fn create_record(
&self,
domain: &str,
host: &str,
record_type: DnsRecordType,
record: NormalizedRecord,
ttl: u32,
) -> crate::Result<()> {
self.client
.post(format!("{}/v4/domains/{}/records", self.endpoint, domain))
.with_body(CreateRecord {
host,
record_type: record_type.as_str(),
answer: record.answer,
ttl,
priority: record.priority,
})?
.send_with_retry::<serde_json::Value>(3)
.await
.map(|_| ())
}
async fn delete_record(&self, domain: &str, record_id: i64) -> crate::Result<()> {
self.client
.delete(format!(
"{}/v4/domains/{}/records/{}",
self.endpoint, domain, record_id
))
.send_with_retry::<serde_json::Value>(3)
.await
.map(|_| ())
}
}
fn normalize_host(host: &str) -> String {
let trimmed = host.trim_end_matches('.');
if trimmed == "@" {
String::new()
} else {
trimmed.to_ascii_lowercase()
}
}
fn validate_type(record_type: DnsRecordType) -> crate::Result<()> {
if matches!(record_type, DnsRecordType::TLSA) {
return Err(Error::Unsupported(
"TLSA records are not supported by Name.com".to_string(),
));
}
Ok(())
}
fn build_normalized(
expected_type: DnsRecordType,
records: Vec<DnsRecord>,
) -> crate::Result<Vec<NormalizedRecord>> {
let mut out = Vec::with_capacity(records.len());
for record in records {
if record.as_type() != expected_type {
return Err(Error::Api(format!(
"RRSet record type mismatch: expected {}, got {}",
expected_type.as_str(),
record.as_type().as_str(),
)));
}
let priority = record.priority();
let answer = render_answer(record)?;
out.push(NormalizedRecord { answer, priority });
}
Ok(out)
}
fn render_answer(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) => mx.exchange,
DnsRecord::TXT(content) => content,
DnsRecord::SRV(srv) => format!("{} {} {}", srv.weight, srv.port, srv.target),
DnsRecord::CAA(caa) => caa.to_string(),
DnsRecord::TLSA(_) => {
return Err(Error::Unsupported(
"TLSA records are not supported by Name.com".to_string(),
));
}
})
}
fn normalized_to_record(
record_type: DnsRecordType,
record: NormalizedRecord,
) -> crate::Result<DnsRecord> {
match record_type {
DnsRecordType::A => record
.answer
.parse()
.map(DnsRecord::A)
.map_err(|e| Error::Parse(format!("invalid A answer {}: {e}", record.answer))),
DnsRecordType::AAAA => record
.answer
.parse()
.map(DnsRecord::AAAA)
.map_err(|e| Error::Parse(format!("invalid AAAA answer {}: {e}", record.answer))),
DnsRecordType::CNAME => Ok(DnsRecord::CNAME(record.answer)),
DnsRecordType::NS => Ok(DnsRecord::NS(record.answer)),
DnsRecordType::TXT => Ok(DnsRecord::TXT(record.answer)),
DnsRecordType::MX => Ok(DnsRecord::MX(MXRecord {
exchange: record.answer,
priority: record.priority.unwrap_or(0),
})),
DnsRecordType::SRV => parse_srv(record),
DnsRecordType::CAA => parse_caa(&record.answer).map(DnsRecord::CAA),
DnsRecordType::TLSA => Err(Error::Unsupported(
"TLSA records are not supported by Name.com".to_string(),
)),
}
}
fn parse_srv(record: NormalizedRecord) -> crate::Result<DnsRecord> {
let mut parts = record.answer.split_whitespace();
let weight: u16 = parts
.next()
.and_then(|s| s.parse().ok())
.ok_or_else(|| Error::Parse(format!("invalid SRV answer: {}", record.answer)))?;
let port: u16 = parts
.next()
.and_then(|s| s.parse().ok())
.ok_or_else(|| Error::Parse(format!("invalid SRV answer: {}", record.answer)))?;
let target = parts
.next()
.ok_or_else(|| Error::Parse(format!("invalid SRV answer: {}", record.answer)))?
.to_string();
Ok(DnsRecord::SRV(SRVRecord {
priority: record.priority.unwrap_or(0),
weight,
port,
target,
}))
}
fn parse_caa(answer: &str) -> crate::Result<CAARecord> {
let mut parts = answer.splitn(3, char::is_whitespace);
let flags: u8 = parts
.next()
.and_then(|s| s.parse().ok())
.ok_or_else(|| Error::Parse(format!("invalid CAA answer: {answer}")))?;
let tag = parts
.next()
.ok_or_else(|| Error::Parse(format!("invalid CAA answer: {answer}")))?;
let raw_value = parts
.next()
.ok_or_else(|| Error::Parse(format!("invalid CAA answer: {answer}")))?
.trim();
let issuer_critical = flags & 0x80 != 0;
let value = raw_value
.trim_start_matches('"')
.trim_end_matches('"')
.to_string();
match tag {
"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)
}