use crate::{
CAARecord, DnsRecord, DnsRecordType, Error, IntoFqdn, KeyValue, MXRecord, SRVRecord,
http::{HttpClient, HttpClientBuilder},
};
use serde::{Deserialize, Serialize};
use std::time::Duration;
const DEFAULT_ENDPOINT: &str = "https://api.netlify.com/api/v1";
#[derive(Clone)]
pub struct NetlifyProvider {
client: HttpClient,
endpoint: String,
}
#[derive(Serialize, Debug)]
struct CreateRecord<'a> {
hostname: &'a str,
#[serde(rename = "type")]
record_type: &'a str,
value: String,
ttl: u32,
#[serde(skip_serializing_if = "Option::is_none")]
priority: Option<u16>,
#[serde(skip_serializing_if = "Option::is_none")]
weight: Option<u16>,
#[serde(skip_serializing_if = "Option::is_none")]
port: Option<u16>,
#[serde(skip_serializing_if = "Option::is_none")]
flag: Option<u8>,
#[serde(skip_serializing_if = "Option::is_none")]
tag: Option<String>,
}
#[derive(Deserialize, Debug, Clone)]
#[allow(dead_code)]
struct ListedRecord {
#[serde(default)]
id: String,
#[serde(default)]
hostname: String,
#[serde(default, rename = "type")]
record_type: String,
#[serde(default)]
value: String,
#[serde(default)]
ttl: u32,
#[serde(default)]
priority: Option<u16>,
#[serde(default)]
weight: Option<u16>,
#[serde(default)]
port: Option<u16>,
#[serde(default)]
flag: Option<u8>,
#[serde(default)]
tag: Option<String>,
}
#[derive(Debug, Clone, PartialEq, Eq)]
struct RecordContent {
value: String,
priority: Option<u16>,
weight: Option<u16>,
port: Option<u16>,
flag: Option<u8>,
tag: Option<String>,
}
impl NetlifyProvider {
pub(crate) fn new(access_token: impl AsRef<str>, timeout: Option<Duration>) -> Self {
let client = HttpClientBuilder::default()
.with_header("Authorization", format!("Bearer {}", access_token.as_ref()))
.with_header("Accept", "application/json")
.with_timeout(timeout)
.build();
Self {
client,
endpoint: DEFAULT_ENDPOINT.to_string(),
}
}
#[cfg(test)]
pub(crate) fn with_endpoint(self, endpoint: impl AsRef<str>) -> Self {
Self {
endpoint: endpoint.as_ref().trim_end_matches('/').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<()> {
check_record_types(record_type, &records)?;
reject_tlsa(record_type)?;
let name = name.into_name().into_owned();
let zone_id = zone_id_from_origin(&origin.into_name());
let desired = build_contents(&records)?;
let mut existing = self.list_at(&zone_id, &name, record_type.as_str()).await?;
let mut to_add: Vec<RecordContent> = Vec::new();
for content in desired {
if let Some(idx) = existing
.iter()
.position(|r| listed_to_content(r) == content)
{
existing.swap_remove(idx);
} else {
to_add.push(content);
}
}
for entry in existing {
self.delete_by_id(&zone_id, &entry.id).await?;
}
for content in to_add {
self.post_content(&zone_id, &name, record_type.as_str(), ttl, &content)
.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(());
}
reject_tlsa(record_type)?;
let name = name.into_name().into_owned();
let zone_id = zone_id_from_origin(&origin.into_name());
let desired = build_contents(&records)?;
let existing = self.list_at(&zone_id, &name, record_type.as_str()).await?;
for content in desired {
if existing.iter().any(|r| listed_to_content(r) == content) {
continue;
}
self.post_content(&zone_id, &name, record_type.as_str(), ttl, &content)
.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(());
}
reject_tlsa(record_type)?;
let name = name.into_name().into_owned();
let zone_id = zone_id_from_origin(&origin.into_name());
let to_remove = build_contents(&records)?;
let existing = self.list_at(&zone_id, &name, record_type.as_str()).await?;
for content in to_remove {
if let Some(entry) = existing.iter().find(|r| listed_to_content(r) == content) {
self.delete_by_id(&zone_id, &entry.id).await?;
}
}
Ok(())
}
pub(crate) async fn list_rrset(
&self,
name: impl IntoFqdn<'_>,
record_type: DnsRecordType,
origin: impl IntoFqdn<'_>,
) -> crate::Result<Vec<DnsRecord>> {
reject_tlsa(record_type)?;
let name = name.into_name().into_owned();
let zone_id = zone_id_from_origin(&origin.into_name());
let existing = self.list_at(&zone_id, &name, record_type.as_str()).await?;
existing
.into_iter()
.map(|r| listed_to_record(record_type, &r))
.collect()
}
async fn list_all(&self, zone_id: &str) -> crate::Result<Vec<ListedRecord>> {
self.client
.get(format!(
"{}/dns_zones/{}/dns_records",
self.endpoint, zone_id
))
.send()
.await
}
async fn list_at(
&self,
zone_id: &str,
name: &str,
record_type: &str,
) -> crate::Result<Vec<ListedRecord>> {
let records = self.list_all(zone_id).await?;
Ok(records
.into_iter()
.filter(|r| {
r.hostname.trim_end_matches('.').eq_ignore_ascii_case(name)
&& r.record_type.eq_ignore_ascii_case(record_type)
})
.collect())
}
async fn delete_by_id(&self, zone_id: &str, record_id: &str) -> crate::Result<()> {
self.client
.delete(format!(
"{}/dns_zones/{}/dns_records/{}",
self.endpoint, zone_id, record_id
))
.send_with_retry::<serde_json::Value>(3)
.await
.map(|_| ())
}
async fn post_content(
&self,
zone_id: &str,
name: &str,
record_type: &str,
ttl: u32,
content: &RecordContent,
) -> crate::Result<()> {
let payload = CreateRecord {
hostname: name,
record_type,
value: content.value.clone(),
ttl,
priority: content.priority,
weight: content.weight,
port: content.port,
flag: content.flag,
tag: content.tag.clone(),
};
self.client
.post(format!(
"{}/dns_zones/{}/dns_records",
self.endpoint, zone_id
))
.with_body(payload)?
.send_with_retry::<serde_json::Value>(3)
.await
.map(|_| ())
}
}
fn zone_id_from_origin(origin: &str) -> String {
origin.trim_end_matches('.').replace('.', "_")
}
fn check_record_types(expected: DnsRecordType, records: &[DnsRecord]) -> crate::Result<()> {
for r in records {
if r.as_type() != expected {
return Err(Error::Api(format!(
"RRSet record type mismatch: expected {}, got {}",
expected.as_str(),
r.as_type().as_str(),
)));
}
}
Ok(())
}
fn reject_tlsa(record_type: DnsRecordType) -> crate::Result<()> {
if record_type == DnsRecordType::TLSA {
return Err(Error::Unsupported(
"TLSA records are not supported by Netlify".to_string(),
));
}
Ok(())
}
fn build_contents(records: &[DnsRecord]) -> crate::Result<Vec<RecordContent>> {
records.iter().map(record_to_content).collect()
}
fn record_to_content(record: &DnsRecord) -> crate::Result<RecordContent> {
let mut content = RecordContent {
value: String::new(),
priority: None,
weight: None,
port: None,
flag: None,
tag: None,
};
match record {
DnsRecord::A(addr) => content.value = addr.to_string(),
DnsRecord::AAAA(addr) => content.value = addr.to_string(),
DnsRecord::CNAME(value) => content.value = value.clone(),
DnsRecord::NS(value) => content.value = value.clone(),
DnsRecord::MX(mx) => {
content.value = mx.exchange.clone();
content.priority = Some(mx.priority);
}
DnsRecord::TXT(value) => content.value = value.clone(),
DnsRecord::SRV(srv) => {
content.value = srv.target.clone();
content.priority = Some(srv.priority);
content.weight = Some(srv.weight);
content.port = Some(srv.port);
}
DnsRecord::CAA(caa) => {
let (flags, tag, value) = caa.clone().decompose();
content.flag = Some(flags);
content.tag = Some(tag);
content.value = value;
}
DnsRecord::TLSA(_) => {
return Err(Error::Unsupported(
"TLSA records are not supported by Netlify".to_string(),
));
}
}
Ok(content)
}
fn listed_to_content(r: &ListedRecord) -> RecordContent {
RecordContent {
value: r.value.clone(),
priority: r.priority,
weight: r.weight,
port: r.port,
flag: r.flag,
tag: r.tag.clone(),
}
}
fn listed_to_record(record_type: DnsRecordType, r: &ListedRecord) -> crate::Result<DnsRecord> {
Ok(match record_type {
DnsRecordType::A => DnsRecord::A(
r.value
.parse()
.map_err(|e| Error::Parse(format!("invalid A record value {}: {}", r.value, e)))?,
),
DnsRecordType::AAAA => {
DnsRecord::AAAA(r.value.parse().map_err(|e| {
Error::Parse(format!("invalid AAAA record value {}: {}", r.value, e))
})?)
}
DnsRecordType::CNAME => DnsRecord::CNAME(r.value.clone()),
DnsRecordType::NS => DnsRecord::NS(r.value.clone()),
DnsRecordType::MX => DnsRecord::MX(MXRecord {
exchange: r.value.clone(),
priority: r.priority.unwrap_or(0),
}),
DnsRecordType::TXT => DnsRecord::TXT(r.value.clone()),
DnsRecordType::SRV => DnsRecord::SRV(SRVRecord {
target: r.value.clone(),
priority: r.priority.unwrap_or(0),
weight: r.weight.unwrap_or(0),
port: r.port.unwrap_or(0),
}),
DnsRecordType::CAA => DnsRecord::CAA(build_caa(r)?),
DnsRecordType::TLSA => {
return Err(Error::Unsupported(
"TLSA records are not supported by Netlify".to_string(),
));
}
})
}
fn build_caa(r: &ListedRecord) -> crate::Result<CAARecord> {
let flags = r.flag.unwrap_or(0);
let tag = r.tag.clone().unwrap_or_default();
let issuer_critical = flags & 0x80 != 0;
match tag.as_str() {
"issue" => {
let (name, options) = parse_caa_value(&r.value);
Ok(CAARecord::Issue {
issuer_critical,
name,
options,
})
}
"issuewild" => {
let (name, options) = parse_caa_value(&r.value);
Ok(CAARecord::IssueWild {
issuer_critical,
name,
options,
})
}
"iodef" => Ok(CAARecord::Iodef {
issuer_critical,
url: r.value.clone(),
}),
other => Err(Error::Parse(format!("unknown CAA tag: {other}"))),
}
}
fn parse_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)
}