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refactore params parsing

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This commit is contained in:
trinity-1686a 2022-02-06 00:09:40 +01:00
parent c629a9f4e2
commit abb19a0443
3 changed files with 93 additions and 104 deletions
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2
src/api/s3_copy.rs
View file

@ -46,7 +46,7 @@ pub async fn handle_copy(
// Implement x-amz-metadata-directive: REPLACE
let new_meta = match req.headers().get("x-amz-metadata-directive") {
Some(v) if v == hyper::header::HeaderValue::from_static("REPLACE") => ObjectVersionMeta {
headers: get_headers(req)?,
headers: get_headers(req.headers())?,
size: source_version_meta.size,
etag: source_version_meta.etag.clone(),
},

177
src/api/s3_post_object.rs
View file

@ -1,7 +1,10 @@
use std::collections::{BTreeMap, HashMap};
use std::collections::HashMap;
use std::convert::TryInto;
use std::sync::Arc;
use hyper::{header, Body, Request, Response, StatusCode};
use futures::StreamExt;
use hyper::header::{self, HeaderMap, HeaderName, HeaderValue};
use hyper::{Body, Request, Response, StatusCode};
use multer::{Constraints, Multipart, SizeLimit};
use serde::Deserialize;
@ -9,7 +12,7 @@ use garage_model::garage::Garage;
use crate::api_server::resolve_bucket;
use crate::error::*;
use crate::s3_put::save_stream;
use crate::s3_put::{get_headers, save_stream};
use crate::signature::payload::{parse_date, verify_v4};
pub async fn handle_post_object(
@ -24,99 +27,72 @@ pub async fn handle_post_object(
.and_then(|ct| multer::parse_boundary(ct).ok())
.ok_or_bad_request("Counld not get multipart boundary")?;
// these limits are rather arbitrary
// 16k seems plenty for a header. 5G is the max size of a single part, so it seemrs reasonable
// for a PostObject
let constraints = Constraints::new().size_limit(
SizeLimit::new()
.per_field(32 * 1024)
.per_field(16 * 1024)
.for_field("file", 5 * 1024 * 1024 * 1024),
);
let mut multipart = Multipart::with_constraints(req.into_body(), boundary, constraints);
let mut headers = BTreeMap::new();
let mut credential = None;
let mut key = None;
let mut policy = None;
let mut signature = None;
let mut date = None;
let mut redirect = Err(204);
let mut params = HeaderMap::new();
while let Some(field) = multipart.next_field().await? {
let name = if let Some(name) = field.name() {
name.to_owned()
let name: HeaderName = if let Some(Ok(name)) = field.name().map(TryInto::try_into) {
name
} else {
continue;
};
if name != "file" {
let content = field.text().await?;
// TODO wouldn't a header map be better?
match name.to_ascii_lowercase().as_str() {
// main fields
"key" => {
key = Some(content);
}
"policy" => {
policy = Some(content);
}
"x-amz-credential" => {
credential = Some(content);
}
"x-amz-signature" => {
signature = Some(content);
}
"x-amz-date" => {
date = Some(content);
}
// special handling
"success_action_redirect" | "redirect" => {
// TODO should verify it's a valid looking URI
redirect = Ok(content);
}
"success_action_status" => {
let code = name.parse::<u16>().unwrap_or(204);
redirect = Err(code);
}
"tagging" => {
// TODO Garage does not support tagging so this can be left empty. It's essentially
// a header except it must be parsed from xml to x-www-form-urlencoded
continue;
}
// headers to PutObject
"cache-control" | "content-type" | "content-encoding" | "expires" => {
headers.insert(name, content);
}
"acl" => {
headers.insert("x-amz-acl".to_owned(), content);
}
_ if name.starts_with("x-amz-") => {
headers.insert(name, content);
}
_ => {
// TODO should we ignore, error or process?
if let Ok(content) = HeaderValue::from_str(&field.text().await?) {
match name.as_str() {
"tag" => (/* tag need to be reencoded, but we don't support them yet anyway */),
"acl" => {
params.append("x-amz-acl", content);
}
_ => {
params.append(name, content);
}
}
}
continue;
}
// Current part is file. Do some checks before handling to PutObject code
let credential = credential.ok_or_else(|| {
Error::Forbidden("Garage does not support anonymous access yet".to_string())
})?;
let policy = policy.ok_or_bad_request("No policy was provided")?;
let signature = signature.ok_or_bad_request("No signature was provided")?;
let date = date.ok_or_bad_request("No date was provided")?;
let key = key.ok_or_bad_request("No key was provided")?;
let key = params
.get("key")
.ok_or_bad_request("No key was provided")?
.to_str()?;
let credential = params
.get("x-amz-credential")
.ok_or_else(|| {
Error::Forbidden("Garage does not support anonymous access yet".to_string())
})?
.to_str()?;
let policy = params
.get("policy")
.ok_or_bad_request("No policy was provided")?
.to_str()?;
let signature = params
.get("x-amz-signature")
.ok_or_bad_request("No signature was provided")?
.to_str()?;
let date = params
.get("x-amz-date")
.ok_or_bad_request("No date was provided")?
.to_str()?;
let key = if key.contains("${filename}") {
let filename = field.file_name();
// is this correct? Maybe we should error instead of default?
key.replace("${filename}", filename.unwrap_or_default())
} else {
key
key.to_owned()
};
let date = parse_date(&date)?;
let api_key = verify_v4(&garage, &credential, &date, &signature, policy.as_bytes()).await?;
let date = parse_date(date)?;
let api_key = verify_v4(&garage, credential, &date, signature, policy.as_bytes()).await?;
let bucket_id = resolve_bucket(&garage, &bucket, &api_key).await?;
@ -128,19 +104,21 @@ pub async fn handle_post_object(
let decoded_policy = base64::decode(&policy)?;
let _decoded_policy: Policy = serde_json::from_slice(&decoded_policy).unwrap();
// TODO validate policy against request
// unsafe to merge until implemented
let content_type = field
.content_type()
.map(ToString::to_string)
.unwrap_or_else(|| "blob".to_owned());
let headers = garage_model::object_table::ObjectVersionHeaders {
content_type,
other: headers,
};
.map(AsRef::as_ref)
.map(HeaderValue::from_str)
.transpose()
.ok_or_bad_request("Invalid content type")?
.unwrap_or_else(|| HeaderValue::from_static("blob"));
params.append(header::CONTENT_TYPE, content_type);
let headers = get_headers(&params)?;
use futures::StreamExt;
let res = save_stream(
garage,
headers,
@ -152,24 +130,35 @@ pub async fn handle_post_object(
)
.await?;
let resp = match redirect {
Err(200) => Response::builder()
.status(StatusCode::OK)
.body(Body::empty())?,
Err(201) => {
// TODO body should be an XML document, not sure which yet
Response::builder()
.status(StatusCode::CREATED)
.body(res.into_body())?
}
// invalid codes are handled as 204
Err(_) => Response::builder()
.status(StatusCode::NO_CONTENT)
.body(Body::empty())?,
Ok(uri) => Response::builder()
let resp = if let Some(target) = params
.get("success_action_redirect")
.and_then(|h| h.to_str().ok())
{
// TODO should validate it's a valid url
let target = target.to_owned();
Response::builder()
.status(StatusCode::SEE_OTHER)
.header(header::LOCATION, uri.clone())
.body(uri.into())?,
.header(header::LOCATION, target.clone())
.body(target.into())?
} else {
let action = params
.get("success_action_status")
.and_then(|h| h.to_str().ok())
.unwrap_or("204");
match action {
"200" => Response::builder()
.status(StatusCode::OK)
.body(Body::empty())?,
"201" => {
// TODO body should be an XML document, not sure which yet
Response::builder()
.status(StatusCode::CREATED)
.body(res.into_body())?
}
_ => Response::builder()
.status(StatusCode::NO_CONTENT)
.body(Body::empty())?,
}
};
return Ok(resp);

18
src/api/s3_put.rs
View file

@ -4,6 +4,7 @@ use std::sync::Arc;
use chrono::{DateTime, NaiveDateTime, Utc};
use futures::{prelude::*, TryFutureExt};
use hyper::body::{Body, Bytes};
use hyper::header::{HeaderMap, HeaderValue};
use hyper::{Request, Response};
use md5::{digest::generic_array::*, Digest as Md5Digest, Md5};
use sha2::Sha256;
@ -35,7 +36,7 @@ pub async fn handle_put(
mut content_sha256: Option<Hash>,
) -> Result<Response<Body>, Error> {
// Retrieve interesting headers from request
let headers = get_headers(&req)?;
let headers = get_headers(req.headers())?;
debug!("Object headers: {:?}", headers);
let content_md5 = match req.headers().get("content-md5") {
@ -394,7 +395,7 @@ pub async fn handle_create_multipart_upload(
key: &str,
) -> Result<Response<Body>, Error> {
let version_uuid = gen_uuid();
let headers = get_headers(req)?;
let headers = get_headers(req.headers())?;
// Create object in object table
let object_version = ObjectVersion {
@ -693,17 +694,16 @@ pub async fn handle_abort_multipart_upload(
Ok(Response::new(Body::from(vec![])))
}
fn get_mime_type(req: &Request<Body>) -> Result<String, Error> {
Ok(req
.headers()
fn get_mime_type(headers: &HeaderMap<HeaderValue>) -> Result<String, Error> {
Ok(headers
.get(hyper::header::CONTENT_TYPE)
.map(|x| x.to_str())
.unwrap_or(Ok("blob"))?
.to_string())
}
pub(crate) fn get_headers(req: &Request<Body>) -> Result<ObjectVersionHeaders, Error> {
let content_type = get_mime_type(req)?;
pub(crate) fn get_headers(headers: &HeaderMap<HeaderValue>) -> Result<ObjectVersionHeaders, Error> {
let content_type = get_mime_type(headers)?;
let mut other = BTreeMap::new();
// Preserve standard headers
@ -715,7 +715,7 @@ pub(crate) fn get_headers(req: &Request<Body>) -> Result<ObjectVersionHeaders, E
hyper::header::EXPIRES,
];
for h in standard_header.iter() {
if let Some(v) = req.headers().get(h) {
if let Some(v) = headers.get(h) {
match v.to_str() {
Ok(v_str) => {
other.insert(h.to_string(), v_str.to_string());
@ -728,7 +728,7 @@ pub(crate) fn get_headers(req: &Request<Body>) -> Result<ObjectVersionHeaders, E
}
// Preserve x-amz-meta- headers
for (k, v) in req.headers().iter() {
for (k, v) in headers.iter() {
if k.as_str().starts_with("x-amz-meta-") {
match v.to_str() {
Ok(v_str) => {