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|
use futures::TryStreamExt;
use mongodb::{
bson::doc,
options::{ClientOptions, Credential, ServerAddress},
Client,
};
use serde::{Deserialize, Serialize};
use tracing::info;
use crate::{
config::Config,
dns::packet::{query::QueryType, record::DnsRecord},
};
use crate::Result;
#[derive(Clone)]
pub struct Database {
client: Client,
}
#[derive(Debug, Serialize, Deserialize)]
pub struct StoredRecord {
record: DnsRecord,
domain: String,
prefix: String,
}
impl StoredRecord {
fn get_domain_parts(domain: &str) -> (String, String) {
let parts: Vec<&str> = domain.split(".").collect();
let len = parts.len();
if len == 1 {
(String::new(), String::from(parts[0]))
} else if len == 2 {
(String::new(), String::from(parts.join(".")))
} else {
(
String::from(parts[0..len - 2].join(".")),
String::from(parts[len - 2..len].join(".")),
)
}
}
}
impl From<DnsRecord> for StoredRecord {
fn from(record: DnsRecord) -> Self {
let (prefix, domain) = Self::get_domain_parts(&record.get_domain());
Self {
record,
domain,
prefix,
}
}
}
impl Into<DnsRecord> for StoredRecord {
fn into(self) -> DnsRecord {
self.record
}
}
impl Database {
pub async fn new(config: Config) -> Result<Self> {
let options = ClientOptions::builder()
.hosts(vec![ServerAddress::Tcp {
host: config.db_host,
port: Some(config.db_port),
}])
.credential(
Credential::builder()
.username(config.db_user)
.password(config.db_pass)
.build(),
)
.max_pool_size(100)
.app_name(String::from("wrapper"))
.build();
let client = Client::with_options(options)?;
client
.database("wrapper")
.run_command(doc! {"ping": 1}, None)
.await?;
info!("Connection to mongodb successfully");
Ok(Database { client })
}
pub async fn get_records(&self, domain: &str, qtype: QueryType) -> Result<Vec<DnsRecord>> {
let (prefix, domain) = StoredRecord::get_domain_parts(domain);
Ok(self
.get_domain(&domain)
.await?
.into_iter()
.filter(|r| r.prefix == prefix)
.filter(|r| {
let rqtype = r.record.get_qtype();
if qtype == QueryType::A {
return rqtype == QueryType::A || rqtype == QueryType::AR;
} else if qtype == QueryType::AAAA {
return rqtype == QueryType::AAAA || rqtype == QueryType::AAAAR;
} else {
r.record.get_qtype() == qtype
}
})
.map(|r| r.into())
.collect())
}
pub async fn get_domain(&self, domain: &str) -> Result<Vec<StoredRecord>> {
let db = self.client.database("wrapper");
let col = db.collection::<StoredRecord>(domain);
let filter = doc! { "domain": domain };
let mut cursor = col.find(filter, None).await?;
let mut records = Vec::new();
while let Some(record) = cursor.try_next().await? {
records.push(record);
}
Ok(records)
}
pub async fn add_record(&self, record: DnsRecord) -> Result<()> {
let record = StoredRecord::from(record);
let db = self.client.database("wrapper");
let col = db.collection::<StoredRecord>(&record.domain);
col.insert_one(record, None).await?;
Ok(())
}
pub async fn get_domains(&self) -> Result<Vec<String>> {
let db = self.client.database("wrapper");
Ok(db.list_collection_names(None).await?)
}
pub async fn delete_domain(&self, domain: String) -> Result<()> {
let db = self.client.database("wrapper");
let col = db.collection::<StoredRecord>(&domain);
Ok(col.drop(None).await?)
}
}
|
