unimore/tirocinio-canali-steffo-acrate
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nodeinfo: Split off Content-Type parameters before checking the MIME type

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This commit is contained in:
Steffo 2024-11-09 14:57:55 +01:00
parent de5fdf26f3
commit d964f1befc
Signed by: steffo
GPG key ID: 5ADA3868646C3FC0
1 changed files with 33 additions and 11 deletions
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42
acrate-nodeinfo/src/lib.rs
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@ -2,6 +2,7 @@
//!
//! [RFC 6415]: https://datatracker.ietf.org/doc/html/rfc6415
use reqwest::header::HeaderValue;
use serde::{Serialize, Deserialize};
/// A [host-meta document].
@ -60,15 +61,21 @@ impl HostMetaDocument {
.await
.map_err(Request)?;
log::trace!("Checking headers of the response...");
response
log::trace!("Checking `Content-Type` of the response...");
let content_type = response
.headers()
.get(reqwest::header::CONTENT_TYPE)
.ok_or(ContentTypeMissing)?
.eq("application/json")
.then_some(())
.ok_or(ContentTypeMissing)?;
log::trace!("Extracting MIME type from the `Content-Type` header...");
let mime_type = extract_mime_from_content_type(content_type)
.ok_or(ContentTypeInvalid)?;
log::trace!("Ensuring MIME type of `{mime_type}` is acceptable for JRD parsing...");
if mime_type != "application/json" {
return Err(ContentTypeInvalid)
}
log::trace!("Attempting to parse response as JSON...");
let data = response.json::<Self>()
.await
@ -107,15 +114,21 @@ impl HostMetaDocument {
.await
.map_err(Request)?;
log::trace!("Checking headers of the response...");
response
log::trace!("Checking `Content-Type` of the response...");
let content_type = response
.headers()
.get(reqwest::header::CONTENT_TYPE)
.ok_or(ContentTypeMissing)?
.eq("application/xrd+json")
.then_some(())
.ok_or(ContentTypeMissing)?;
log::trace!("Extracting MIME type from the `Content-Type` header...");
let mime_type = extract_mime_from_content_type(content_type)
.ok_or(ContentTypeInvalid)?;
log::trace!("Ensuring MIME type of `{mime_type}` is acceptable for JRD parsing...");
if mime_type != "application/xrd+xml" {
return Err(ContentTypeInvalid)
}
log::trace!("Attempting to parse response as text...");
let data = response.text()
.await
@ -303,3 +316,12 @@ pub enum HostMetaGetJRDError {
/// The document failed to be parsed as JSON by [`reqwest`].
Parse(reqwest::Error),
}
/// Extract the MIME type from the value of the `Content-Type` header.
fn extract_mime_from_content_type(value: &HeaderValue) -> Option<String> {
let value = value.to_str().ok()?;
match value.split_once("; ") {
None => Some(value.to_string()),
Some((mime, _)) => Some(mime.to_string()),
}
}