Support STREAMING-AWS4-HMAC-SHA256-PAYLOAD (#64) (#156)

Closes #64. Reviewed-on: https://git.deuxfleurs.fr/Deuxfleurs/garage/pulls/156 Co-authored-by: Jill <kokakiwi@deuxfleurs.fr> Co-committed-by: Jill <kokakiwi@deuxfleurs.fr>
author: Jill <kokakiwi@deuxfleurs.fr> 2022-01-17 10:55:31 +0100
committer: Alex <alex@adnab.me> 2022-01-17 10:55:31 +0100
commit: b45dcc1925d76f3f7dcae7deea0391953ba548e5 (patch)
tree: 85600f90c41532dc0b50e395e6ea85ca8ba08f53 /src/api/s3_put.rs
parent: 60c0033c8bbd3dbc18f8c91f15674a60fd8acdc0 (diff)
download: garage-b45dcc1925d76f3f7dcae7deea0391953ba548e5.tar.gz
garage-b45dcc1925d76f3f7dcae7deea0391953ba548e5.zip
1 files changed, 87 insertions, 23 deletions
diff --git a/src/api/s3_put.rs b/src/api/s3_put.rs
index 37658172..4e85664b 100644
--- a/src/api/s3_put.rs
+++ b/src/api/s3_put.rs
@@ -1,8 +1,10 @@
 use std::collections::{BTreeMap, VecDeque};
 use std::sync::Arc;
 
-use futures::stream::*;
-use hyper::{Body, Request, Response};
+use chrono::{DateTime, NaiveDateTime, Utc};
+use futures::{prelude::*, TryFutureExt};
+use hyper::body::{Body, Bytes};
+use hyper::{Request, Response};
 use md5::{digest::generic_array::*, Digest as Md5Digest, Md5};
 use sha2::Sha256;
 
@@ -14,19 +16,23 @@ use garage_util::time::*;
 use garage_model::block::INLINE_THRESHOLD;
 use garage_model::block_ref_table::*;
 use garage_model::garage::Garage;
+use garage_model::key_table::Key;
 use garage_model::object_table::*;
 use garage_model::version_table::*;
 
 use crate::error::*;
 use crate::s3_xml;
-use crate::signature::verify_signed_content;
+use crate::signature::streaming::SignedPayloadStream;
+use crate::signature::LONG_DATETIME;
+use crate::signature::{compute_scope, verify_signed_content};
 
 pub async fn handle_put(
 	garage: Arc<Garage>,
 	req: Request<Body>,
 	bucket_id: Uuid,
 	key: &str,
-	content_sha256: Option<Hash>,
+	api_key: &Key,
+	mut content_sha256: Option<Hash>,
 ) -> Result<Response<Body>, Error> {
 	// Generate identity of new version
 	let version_uuid = gen_uuid();
@@ -40,11 +46,53 @@ pub async fn handle_put(
 		Some(x) => Some(x.to_str()?.to_string()),
 		None => None,
 	};
+	let payload_seed_signature = match req.headers().get("x-amz-content-sha256") {
+		Some(header) if header == "STREAMING-AWS4-HMAC-SHA256-PAYLOAD" => {
+			let content_sha256 = content_sha256
+				.take()
+				.ok_or_bad_request("No signature provided")?;
+			Some(content_sha256)
+		}
+		_ => None,
+	};
 
 	// Parse body of uploaded file
-	let body = req.into_body();
+	let (head, body) = req.into_parts();
+	let body = body.map_err(Error::from);
+
+	let body = if let Some(signature) = payload_seed_signature {
+		let secret_key = &api_key
+			.state
+			.as_option()
+			.ok_or_internal_error("Deleted key state")?
+			.secret_key;
+
+		let date = head
+			.headers
+			.get("x-amz-date")
+			.ok_or_bad_request("Missing X-Amz-Date field")?
+			.to_str()?;
+		let date: NaiveDateTime =
+			NaiveDateTime::parse_from_str(date, LONG_DATETIME).ok_or_bad_request("Invalid date")?;
+		let date: DateTime<Utc> = DateTime::from_utc(date, Utc);
+
+		let scope = compute_scope(&date, &garage.config.s3_api.s3_region);
+		let signing_hmac = crate::signature::signing_hmac(
+			&date,
+			secret_key,
+			&garage.config.s3_api.s3_region,
+			"s3",
+		)
+		.ok_or_internal_error("Unable to build signing HMAC")?;
 
-	let mut chunker = BodyChunker::new(body, garage.config.block_size);
+		SignedPayloadStream::new(body, signing_hmac, date, &scope, signature)?
+			.map_err(Error::from)
+			.boxed()
+	} else {
+		body.boxed()
+	};
+
+	let mut chunker = StreamChunker::new(body, garage.config.block_size);
 	let first_block = chunker.next().await?.unwrap_or_default();
 
 	// If body is small enough, store it directly in the object table
@@ -178,13 +226,13 @@ fn ensure_checksum_matches(
 	Ok(())
 }
 
-async fn read_and_put_blocks(
+async fn read_and_put_blocks<S: Stream<Item = Result<Bytes, Error>> + Unpin>(
 	garage: &Garage,
 	version: &Version,
 	part_number: u64,
 	first_block: Vec<u8>,
 	first_block_hash: Hash,
-	chunker: &mut BodyChunker,
+	chunker: &mut StreamChunker<S>,
 ) -> Result<(u64, GenericArray<u8, typenum::U16>, Hash), Error> {
 	let mut md5hasher = Md5::new();
 	let mut sha256hasher = Sha256::new();
@@ -205,8 +253,11 @@ async fn read_and_put_blocks(
 		.rpc_put_block(first_block_hash, first_block);
 
 	loop {
-		let (_, _, next_block) =
-			futures::try_join!(put_curr_block, put_curr_version_block, chunker.next())?;
+		let (_, _, next_block) = futures::try_join!(
+			put_curr_block.map_err(Error::from),
+			put_curr_version_block.map_err(Error::from),
+			chunker.next(),
+		)?;
 		if let Some(block) = next_block {
 			md5hasher.update(&block[..]);
 			sha256hasher.update(&block[..]);
@@ -266,32 +317,34 @@ async fn put_block_meta(
 	Ok(())
 }
 
-struct BodyChunker {
-	body: Body,
+struct StreamChunker<S: Stream<Item = Result<Bytes, Error>>> {
+	stream: S,
 	read_all: bool,
 	block_size: usize,
 	buf: VecDeque<u8>,
 }
 
-impl BodyChunker {
-	fn new(body: Body, block_size: usize) -> Self {
+impl<S: Stream<Item = Result<Bytes, Error>> + Unpin> StreamChunker<S> {
+	fn new(stream: S, block_size: usize) -> Self {
 		Self {
-			body,
+			stream,
 			read_all: false,
 			block_size,
 			buf: VecDeque::with_capacity(2 * block_size),
 		}
 	}
-	async fn next(&mut self) -> Result<Option<Vec<u8>>, GarageError> {
+
+	async fn next(&mut self) -> Result<Option<Vec<u8>>, Error> {
 		while !self.read_all && self.buf.len() < self.block_size {
-			if let Some(block) = self.body.next().await {
+			if let Some(block) = self.stream.next().await {
 				let bytes = block?;
 				trace!("Body next: {} bytes", bytes.len());
-				self.buf.extend(&bytes[..]);
+				self.buf.extend(bytes);
 			} else {
 				self.read_all = true;
 			}
 		}
+
 		if self.buf.is_empty() {
 			Ok(None)
 		} else if self.buf.len() <= self.block_size {
@@ -368,12 +421,20 @@ pub async fn handle_put_part(
 
 	// Read first chuck, and at the same time try to get object to see if it exists
 	let key = key.to_string();
-	let mut chunker = BodyChunker::new(req.into_body(), garage.config.block_size);
+
+	let body = req.into_body().map_err(Error::from);
+	let mut chunker = StreamChunker::new(body, garage.config.block_size);
 
 	let (object, version, first_block) = futures::try_join!(
-		garage.object_table.get(&bucket_id, &key),
-		garage.version_table.get(&version_uuid, &EmptyKey),
-		chunker.next()
+		garage
+			.object_table
+			.get(&bucket_id, &key)
+			.map_err(Error::from),
+		garage
+			.version_table
+			.get(&version_uuid, &EmptyKey)
+			.map_err(Error::from),
+		chunker.next(),
 	)?;
 
 	// Check object is valid and multipart block can be accepted
@@ -444,7 +505,10 @@ pub async fn handle_complete_multipart_upload(
 	content_sha256: Option<Hash>,
 ) -> Result<Response<Body>, Error> {
 	let body = hyper::body::to_bytes(req.into_body()).await?;
-	verify_signed_content(content_sha256, &body[..])?;
+
+	if let Some(content_sha256) = content_sha256 {
+		verify_signed_content(content_sha256, &body[..])?;
+	}
 
 	let body_xml = roxmltree::Document::parse(std::str::from_utf8(&body)?)?;
 	let body_list_of_parts = parse_complete_multpart_upload_body(&body_xml)
author	Jill <kokakiwi@deuxfleurs.fr>	2022-01-17 10:55:31 +0100
committer	Alex <alex@adnab.me>	2022-01-17 10:55:31 +0100
commit	b45dcc1925d76f3f7dcae7deea0391953ba548e5 (patch)
tree	85600f90c41532dc0b50e395e6ea85ca8ba08f53 /src/api/s3_put.rs
parent	60c0033c8bbd3dbc18f8c91f15674a60fd8acdc0 (diff)
download	garage-b45dcc1925d76f3f7dcae7deea0391953ba548e5.tar.gz garage-b45dcc1925d76f3f7dcae7deea0391953ba548e5.zip