gsadmin/garage
1
0
Fork 0
mirror of https://github.com/deuxfleurs-org/garage.git synced 2026-08-31 09:18:29 +00:00
Code Issues Packages Projects Releases Wiki Activity

Validate content MD5 and SHA256 sums for PutObject and UploadPart

Browse Source
This commit is contained in:
Alex Auvolat
2020-07-15 15:31:13 +02:00
parent 6c7f9704ea
commit 1c70552f95
4 changed files with 104 additions and 25 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/api/s3_put.rs
+63 -15
View File
@@ -2,9 +2,10 @@ use std::collections::{BTreeMap, VecDeque};
use std::fmt::Write;
use std::sync::Arc;
use md5::{Md5, Digest};
use futures::stream::*;
use hyper::{Body, Request, Response};
use md5::{Digest as Md5Digest, Md5};
use sha2::{Digest as Sha256Digest, Sha256};
use garage_table::*;
use garage_util::data::*;
@@ -23,9 +24,14 @@ pub async fn handle_put(
req: Request<Body>,
bucket: &str,
key: &str,
content_sha256: Option<Hash>,
) -> Result<Response<Body>, Error> {
let version_uuid = gen_uuid();
let headers = get_headers(&req)?;
let content_md5 = match req.headers().get("content-md5") {
Some(x) => Some(x.to_str()?.to_string()),
None => None,
};
let body = req.into_body();
@@ -42,9 +48,9 @@ pub async fn handle_put(
};
if first_block.len() < INLINE_THRESHOLD {
let mut md5sum = Md5::new();
md5sum.update(&first_block[..]);
let etag = hex::encode(md5sum.finalize());
let mut md5sum = Md5::new();
md5sum.update(&first_block[..]);
let etag = hex::encode(md5sum.finalize());
object_version.state = ObjectVersionState::Complete(ObjectVersionData::Inline(
ObjectVersionMeta {
@@ -66,7 +72,7 @@ pub async fn handle_put(
let object = Object::new(bucket.into(), key.into(), vec![object_version.clone()]);
garage.object_table.insert(&object).await?;
let (total_size, etag) = read_and_put_blocks(
let (total_size, md5sum, sha256sum) = read_and_put_blocks(
&garage,
version,
1,
@@ -76,13 +82,26 @@ pub async fn handle_put(
)
.await?;
if let Some(expected_sha256) = content_sha256 {
if expected_sha256 != sha256sum {
return Err(Error::Message(format!(
"Unable to validate x-amz-content-sha256"
)));
}
}
if let Some(expected_md5) = content_md5 {
if expected_md5.trim_matches('"') != md5sum {
return Err(Error::Message(format!("Unable to validate content-md5")));
}
}
// TODO: if at any step we have an error, we should undo everything we did
object_version.state = ObjectVersionState::Complete(ObjectVersionData::FirstBlock(
ObjectVersionMeta {
headers,
size: total_size,
etag: etag.clone(),
etag: md5sum.clone(),
},
first_block_hash,
));
@@ -90,7 +109,7 @@ pub async fn handle_put(
let object = Object::new(bucket.into(), key.into(), vec![object_version]);
garage.object_table.insert(&object).await?;
Ok(put_response(version_uuid, etag))
Ok(put_response(version_uuid, md5sum))
}
async fn read_and_put_blocks(
@@ -100,9 +119,11 @@ async fn read_and_put_blocks(
first_block: Vec<u8>,
first_block_hash: Hash,
chunker: &mut BodyChunker,
) -> Result<(u64, String), Error> {
let mut md5sum = Md5::new();
md5sum.update(&first_block[..]);
) -> Result<(u64, String, Hash), Error> {
let mut md5sum = Md5::new();
let mut sha256sum = Sha256::new();
md5sum.update(&first_block[..]);
sha256sum.input(&first_block[..]);
let mut next_offset = first_block.len();
let mut put_curr_version_block = put_block_meta(
@@ -121,7 +142,8 @@ async fn read_and_put_blocks(
let (_, _, next_block) =
futures::try_join!(put_curr_block, put_curr_version_block, chunker.next())?;
if let Some(block) = next_block {
md5sum.update(&block[..]);
md5sum.update(&block[..]);
sha256sum.input(&block[..]);
let block_hash = hash(&block[..]);
let block_len = block.len();
put_curr_version_block = put_block_meta(
@@ -139,9 +161,15 @@ async fn read_and_put_blocks(
}
}
let total_size = next_offset as u64;
let md5sum = hex::encode(md5sum.finalize());
Ok((total_size, md5sum))
let total_size = next_offset as u64;
let md5sum = hex::encode(md5sum.finalize());
let sha256sum = sha256sum.result();
let mut hash = [0u8; 32];
hash.copy_from_slice(&sha256sum[..]);
let sha256sum = Hash::from(hash);
Ok((total_size, md5sum, sha256sum))
}
async fn put_block_meta(
@@ -267,6 +295,7 @@ pub async fn handle_put_part(
key: &str,
part_number_str: &str,
upload_id: &str,
content_sha256: Option<Hash>,
) -> Result<Response<Body>, Error> {
// Check parameters
let part_number = part_number_str
@@ -276,6 +305,11 @@ pub async fn handle_put_part(
let version_uuid =
uuid_from_str(upload_id).map_err(|_| Error::BadRequest(format!("Invalid upload ID")))?;
let content_md5 = match req.headers().get("content-md5") {
Some(x) => Some(x.to_str()?.to_string()),
None => None,
};
// Read first chuck, and at the same time try to get object to see if it exists
let mut chunker = BodyChunker::new(req.into_body(), garage.config.block_size);
@@ -307,7 +341,7 @@ pub async fn handle_put_part(
// Copy block to store
let version = Version::new(version_uuid, bucket.into(), key.into(), false, vec![]);
let first_block_hash = hash(&first_block[..]);
read_and_put_blocks(
let (_, md5sum, sha256sum) = read_and_put_blocks(
&garage,
version,
part_number,
@@ -317,6 +351,20 @@ pub async fn handle_put_part(
)
.await?;
if let Some(expected_md5) = content_md5 {
if expected_md5.trim_matches('"') != md5sum {
return Err(Error::Message(format!("Unable to validate content-md5")));
}
}
if let Some(expected_sha256) = content_sha256 {
if expected_sha256 != sha256sum {
return Err(Error::Message(format!(
"Unable to validate x-amz-content-sha256"
)));
}
}
Ok(Response::new(Body::from(vec![])))
}