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Verify digest without consuming body

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asonix 2020-01-19 17:11:40 -06:00
parent 421eb3520e
commit ebeee051bf
2 changed files with 24 additions and 38 deletions
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3
http-signature-normalization-warp/Cargo.toml
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@ -16,9 +16,10 @@ bytes = "0.5.3"
futures = "0.3.1"
http = "0.2.0"
http-signature-normalization-http = { version = "0.3.0", path = "../http-signature-normalization-http" }
hyper = "0.13.1"
serde = { version = "1.0.104", features = ["derive"], optional = true }
serde_json = { version = "1.0.44", optional = true }
serde_urlencoded = { version = "0.6.1", optional = true }
sha2 = { version = "0.8.1", optional = true }
thiserror = { version = "1.0.9", optional = true }
warp = "0.2.0"
warp = { version = "0.2.0", git = "https://git.asonix.dog/asonix/warp", branch = "asonix/body-map-test" }

59
http-signature-normalization-warp/src/digest/mod.rs
View file

@ -1,6 +1,6 @@
use bytes::Bytes;
use bytes::Buf;
use std::str::FromStr;
use warp::{body, header, Filter, Rejection};
use warp::{header, Filter, Rejection};
#[cfg(feature = "sha-2")]
mod sha_2;
@ -9,6 +9,7 @@ pub trait DigestVerify {
fn verify(&mut self, digests: &[DigestPart], payload: &[u8]) -> bool;
}
#[derive(Clone, Debug)]
pub struct DigestPart {
pub algorithm: String,
pub digest: String,
@ -35,49 +36,33 @@ pub enum ParseDigestError {
#[error("Could not parse request body")]
pub struct ParseBodyError;
pub fn verify_bytes(
verifier: impl DigestVerify + Clone + Send,
) -> impl Filter<Extract = (Bytes,), Error = Rejection> + Clone {
parse_digest_header().and(body::bytes()).and_then(
move |parts: Vec<DigestPart>, bytes: Bytes| {
pub fn verify<F>(
verifier: impl DigestVerify + Clone + Send + Sync + 'static,
filter: F,
) -> impl Filter<Extract = F::Extract, Error = Rejection> + Clone
where
F: Filter + Clone + Send + Sync + 'static,
F::Extract: warp::Reply,
F::Error: Into<Rejection>,
{
filter.with(
warp::body::map_request_body(parse_digest_header(), move |body: hyper::body::Body, parts: (Vec<DigestPart>,)| {
let mut verifier = verifier.clone();
async move {
if verifier.verify(&parts, &bytes) {
Ok(bytes)
let parts = parts.clone();
let buf = hyper::body::aggregate(body).await.ok()?;
let bytes: Vec<u8> = buf.bytes().to_owned();
if verifier.verify(&parts.0, &bytes) {
Some(bytes.into())
} else {
Err(warp::reject::custom(VerifyError))
None
}
}
},
})
)
}
pub fn verify_json<T>(
verifier: impl DigestVerify + Clone + Send,
) -> impl Filter<Extract = (T,), Error = Rejection> + Clone
where
T: serde::de::DeserializeOwned,
{
verify_bytes(verifier).and_then(|bytes: Bytes| {
async move {
serde_json::from_slice(&bytes).map_err(|_| warp::reject::custom(ParseBodyError))
}
})
}
pub fn verify_form<T>(
verifier: impl DigestVerify + Clone + Send,
) -> impl Filter<Extract = (T,), Error = Rejection> + Clone
where
T: serde::de::DeserializeOwned,
{
verify_bytes(verifier).and_then(|bytes: Bytes| {
async move {
serde_urlencoded::from_bytes(&bytes).map_err(|_| warp::reject::custom(ParseBodyError))
}
})
}
fn parse_digest_header() -> impl Filter<Extract = (Vec<DigestPart>,), Error = Rejection> + Clone {
header::header::<Digest>("Digest").map(|d: Digest| d.parts)
}