use std::sync::Arc;
use async_trait::async_trait;
use futures::future::Future;
use hyper::header;
use hyper::{Body, Method, Request, Response};
use opentelemetry::{trace::SpanRef, KeyValue};
use garage_util::error::Error as GarageError;
use garage_model::garage::Garage;
use garage_model::key_table::Key;
use crate::generic_server::*;
use crate::s3::error::*;
use crate::signature::payload::check_payload_signature;
use crate::signature::streaming::*;
use crate::helpers::*;
use crate::s3::bucket::*;
use crate::s3::copy::*;
use crate::s3::cors::*;
use crate::s3::delete::*;
use crate::s3::get::*;
use crate::s3::list::*;
use crate::s3::post_object::handle_post_object;
use crate::s3::put::*;
use crate::s3::router::Endpoint;
use crate::s3::website::*;
pub struct S3ApiServer {
garage: Arc<Garage>,
}
pub(crate) struct S3ApiEndpoint {
bucket_name: Option<String>,
endpoint: Endpoint,
}
impl S3ApiServer {
pub async fn run(
garage: Arc<Garage>,
shutdown_signal: impl Future<Output = ()>,
) -> Result<(), GarageError> {
let addr = garage.config.s3_api.api_bind_addr;
ApiServer::new(
garage.config.s3_api.s3_region.clone(),
S3ApiServer { garage },
)
.run_server(addr, shutdown_signal)
.await
}
async fn handle_request_without_bucket(
&self,
_req: Request<Body>,
api_key: Key,
endpoint: Endpoint,
) -> Result<Response<Body>, Error> {
match endpoint {
Endpoint::ListBuckets => handle_list_buckets(&self.garage, &api_key).await,
endpoint => Err(Error::NotImplemented(endpoint.name().to_owned())),
}
}
}
#[async_trait]
impl ApiHandler for S3ApiServer {
const API_NAME: &'static str = "s3";
const API_NAME_DISPLAY: &'static str = "S3";
type Endpoint = S3ApiEndpoint;
type Error = Error;
fn parse_endpoint(&self, req: &Request<Body>) -> Result<S3ApiEndpoint, Error> {
let authority = req
.headers()
.get(header::HOST)
.ok_or_bad_request("Host header required")?
.to_str()?;
let host = authority_to_host(authority)?;
let bucket_name = self
.garage
.config
.s3_api
.root_domain
.as_ref()
.and_then(|root_domain| host_to_bucket(&host, root_domain));
let (endpoint, bucket_name) =
Endpoint::from_request(req, bucket_name.map(ToOwned::to_owned))?;
Ok(S3ApiEndpoint {
bucket_name,
endpoint,
})
}
async fn handle(
&self,
req: Request<Body>,
endpoint: S3ApiEndpoint,
) -> Result<Response<Body>, Error> {
let S3ApiEndpoint {
bucket_name,
endpoint,
} = endpoint;
let garage = self.garage.clone();
// Some endpoints are processed early, before we even check for an API key
if let Endpoint::PostObject = endpoint {
return handle_post_object(garage, req, bucket_name.unwrap()).await;
}
if let Endpoint::Options = endpoint {
return handle_options_s3api(garage, &req, bucket_name)
.await
.map_err(Error::from);
}
let (api_key, mut content_sha256) = check_payload_signature(&garage, "s3", &req).await?;
let api_key = api_key
.ok_or_else(|| Error::forbidden("Garage does not support anonymous access yet"))?;
let req = parse_streaming_body(
&api_key,
req,
&mut content_sha256,
&garage.config.s3_api.s3_region,
"s3",
)?;
let bucket_name = match bucket_name {
None => {
return self
.handle_request_without_bucket(req, api_key, endpoint)
.await
}
Some(bucket) => bucket.to_string(),
};
// Special code path for CreateBucket API endpoint
if let Endpoint::CreateBucket {} = endpoint {
return handle_create_bucket(&garage, req, content_sha256, api_key, bucket_name).await;
}
let bucket_id = garage
.bucket_helper()
.resolve_bucket(&bucket_name, &api_key)
.await?;
let bucket = garage
.bucket_helper()
.get_existing_bucket(bucket_id)
.await?;
let allowed = match endpoint.authorization_type() {
Authorization::Read => api_key.allow_read(&bucket_id),
Authorization::Write => api_key.allow_write(&bucket_id),
Authorization::Owner => api_key.allow_owner(&bucket_id),
_ => unreachable!(),
};
if !allowed {
return Err(Error::forbidden("Operation is not allowed for this key."));
}
// Look up what CORS rule might apply to response.
// Requests for methods different than GET, HEAD or POST
// are always preflighted, i.e. the browser should make
// an OPTIONS call before to check it is allowed
let matching_cors_rule = match *req.method() {
Method::GET | Method::HEAD | Method::POST => find_matching_cors_rule(&bucket, &req)?,
_ => None,
};
let resp = match endpoint {
Endpoint::HeadObject {
key, part_number, ..
} => handle_head(garage, &req, bucket_id, &key, part_number).await,
Endpoint::GetObject {
key, part_number, ..
} => handle_get(garage, &req, bucket_id, &key, part_number).await,
Endpoint::UploadPart {
key,
part_number,
upload_id,
} => {
handle_put_part(
garage,
req,
bucket_id,
&key,
part_number,
&upload_id,
content_sha256,
)
.await
}
Endpoint::CopyObject { key } => {
handle_copy(garage, &api_key, &req, bucket_id, &key).await
}
Endpoint::UploadPartCopy {
key,
part_number,
upload_id,
} => {
handle_upload_part_copy(
garage,
&api_key,
&req,
bucket_id,
&key,
part_number,
&upload_id,
)
.await
}
Endpoint::PutObject { key } => {
handle_put(garage, req, bucket_id, &key, content_sha256).await
}
Endpoint::AbortMultipartUpload { key, upload_id } => {
handle_abort_multipart_upload(garage, bucket_id, &key, &upload_id).await
}
Endpoint::DeleteObject { key, .. } => handle_delete(garage, bucket_id, &key).await,
Endpoint::CreateMultipartUpload { key } => {
handle_create_multipart_upload(garage, &req, &bucket_name, bucket_id, &key).await
}
Endpoint::CompleteMultipartUpload { key, upload_id } => {
handle_complete_multipart_upload(
garage,
req,
&bucket_name,
bucket_id,
&key,
&upload_id,
content_sha256,
)
.await
}
Endpoint::CreateBucket {} => unreachable!(),
Endpoint::HeadBucket {} => {
let empty_body: Body = Body::from(vec![]);
let response = Response::builder().body(empty_body).unwrap();
Ok(response)
}
Endpoint::DeleteBucket {} => {
handle_delete_bucket(&garage, bucket_id, bucket_name, api_key).await
}
Endpoint::GetBucketLocation {} => handle_get_bucket_location(garage),
Endpoint::GetBucketVersioning {} => handle_get_bucket_versioning(),
Endpoint::ListObjects {
delimiter,
encoding_type,
marker,
max_keys,
prefix,
} => {
handle_list(
garage,
&ListObjectsQuery {
common: ListQueryCommon {
bucket_name,
bucket_id,
delimiter: delimiter.map(|d| d.to_string()),
page_size: max_keys.map(|p| p.clamp(1, 1000)).unwrap_or(1000),
prefix: prefix.unwrap_or_default(),
urlencode_resp: encoding_type.map(|e| e == "url").unwrap_or(false),
},
is_v2: false,
marker,
continuation_token: None,
start_after: None,
},
)
.await
}
Endpoint::ListObjectsV2 {
delimiter,
encoding_type,
max_keys,
prefix,
continuation_token,
start_after,
list_type,
..
} => {
if list_type == "2" {
handle_list(
garage,
&ListObjectsQuery {
common: ListQueryCommon {
bucket_name,
bucket_id,
delimiter: delimiter.map(|d| d.to_string()),
page_size: max_keys.map(|p| p.clamp(1, 1000)).unwrap_or(1000),
urlencode_resp: encoding_type.map(|e| e == "url").unwrap_or(false),
prefix: prefix.unwrap_or_default(),
},
is_v2: true,
marker: None,
continuation_token,
start_after,
},
)
.await
} else {
Err(Error::bad_request(format!(
"Invalid endpoint: list-type={}",
list_type
)))
}
}
Endpoint::ListMultipartUploads {
delimiter,
encoding_type,
key_marker,
max_uploads,
prefix,
upload_id_marker,
} => {
handle_list_multipart_upload(
garage,
&ListMultipartUploadsQuery {
common: ListQueryCommon {
bucket_name,
bucket_id,
delimiter: delimiter.map(|d| d.to_string()),
page_size: max_uploads.map(|p| p.clamp(1, 1000)).unwrap_or(1000),
prefix: prefix.unwrap_or_default(),
urlencode_resp: encoding_type.map(|e| e == "url").unwrap_or(false),
},
key_marker,
upload_id_marker,
},
)
.await
}
Endpoint::ListParts {
key,
max_parts,
part_number_marker,
upload_id,
} => {
handle_list_parts(
garage,
&ListPartsQuery {
bucket_name,
bucket_id,
key,
upload_id,
part_number_marker: part_number_marker.map(|p| p.clamp(1, 10000)),
max_parts: max_parts.map(|p| p.clamp(1, 1000)).unwrap_or(1000),
},
)
.await
}
Endpoint::DeleteObjects {} => {
handle_delete_objects(garage, bucket_id, req, content_sha256).await
}
Endpoint::GetBucketWebsite {} => handle_get_website(&bucket).await,
Endpoint::PutBucketWebsite {} => {
handle_put_website(garage, bucket_id, req, content_sha256).await
}
Endpoint::DeleteBucketWebsite {} => handle_delete_website(garage, bucket_id).await,
Endpoint::GetBucketCors {} => handle_get_cors(&bucket).await,
Endpoint::PutBucketCors {} => {
handle_put_cors(garage, bucket_id, req, content_sha256).await
}
Endpoint::DeleteBucketCors {} => handle_delete_cors(garage, bucket_id).await,
endpoint => Err(Error::NotImplemented(endpoint.name().to_owned())),
};
// If request was a success and we have a CORS rule that applies to it,
// add the corresponding CORS headers to the response
let mut resp_ok = resp?;
if let Some(rule) = matching_cors_rule {
add_cors_headers(&mut resp_ok, rule)
.ok_or_internal_error("Invalid bucket CORS configuration")?;
}
Ok(resp_ok)
}
}
impl ApiEndpoint for S3ApiEndpoint {
fn name(&self) -> &'static str {
self.endpoint.name()
}
fn add_span_attributes(&self, span: SpanRef<'_>) {
span.set_attribute(KeyValue::new(
"bucket",
self.bucket_name.clone().unwrap_or_default(),
));
}
}
