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安正超
116 lines
3.4 KiB
Rust
116 lines
3.4 KiB
Rust
// Copyright 2024 RustFS Team
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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use http::request;
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use s3s::Body;
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#[derive(Debug, thiserror::Error)]
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pub enum HostAddrError {
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#[error("invalid UTF-8 header value for `host`")]
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InvalidHostHeader,
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#[error("request uri has no host")]
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MissingUriHost,
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}
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pub fn try_get_host_addr(req: &request::Request<Body>) -> Result<String, HostAddrError> {
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let host = req.headers().get("host");
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let uri = req.uri();
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let uri_host = uri.host().ok_or(HostAddrError::MissingUriHost)?;
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let req_host = if let Some(port) = uri.port() {
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format!("{uri_host}:{port}")
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} else {
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uri_host.to_string()
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};
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if let Some(host) = host {
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let host = host.to_str().map_err(|_| HostAddrError::InvalidHostHeader)?;
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if req_host != host {
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return Ok(host.to_string());
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}
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}
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Ok(req_host)
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}
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pub fn get_host_addr(req: &request::Request<Body>) -> String {
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try_get_host_addr(req).unwrap()
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}
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pub fn sign_v4_trim_all(input: &str) -> String {
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let ss = input.split_whitespace().collect::<Vec<_>>();
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ss.join(" ")
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}
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pub fn stable_sort_by_first<T>(v: &mut [(T, T)])
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where
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T: Ord,
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{
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v.sort_by(|lhs, rhs| lhs.0.cmp(&rhs.0));
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}
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#[cfg(test)]
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mod tests {
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use super::{HostAddrError, try_get_host_addr};
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use http::HeaderValue;
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use http::request;
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use s3s::Body;
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#[test]
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fn try_get_host_addr_prefers_explicit_host_header_when_it_differs_from_uri() {
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let mut req = request::Request::builder()
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.method(http::Method::GET)
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.uri("https://bucket.example.com/object")
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.body(Body::empty())
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.expect("request should build");
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req.headers_mut()
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.insert("host", HeaderValue::from_static("proxy.internal:9443"));
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let host = try_get_host_addr(&req).expect("host lookup should succeed");
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assert_eq!(host, "proxy.internal:9443");
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}
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#[test]
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fn try_get_host_addr_rejects_non_utf8_host_header_value() {
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let mut req = request::Request::builder()
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.method(http::Method::GET)
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.uri("https://bucket.example.com/object")
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.body(Body::empty())
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.expect("request should build");
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req.headers_mut().insert(
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"host",
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HeaderValue::from_bytes(&[0xFF]).expect("invalid utf8 bytes should be accepted by HeaderValue"),
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);
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let err = try_get_host_addr(&req).expect_err("invalid host header should fail");
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assert!(matches!(err, HostAddrError::InvalidHostHeader));
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}
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#[test]
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fn try_get_host_addr_rejects_relative_uri_without_host() {
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let req = request::Request::builder()
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.method(http::Method::GET)
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.uri("/object")
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.body(Body::empty())
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.expect("request should build");
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let err = try_get_host_addr(&req).expect_err("relative uri should fail");
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assert!(matches!(err, HostAddrError::MissingUriHost));
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}
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}
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