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Raise error when failing to load & parse the specified certificate (#4554)

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Yip Coekjan 2024-07-22 21:37:33 +08:00 committed by GitHub
parent b037c19ccb
commit 684efa2e0e
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1 changed files with 19 additions and 10 deletions
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29
crates/typst-cli/src/download.rs
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@ -8,7 +8,7 @@ use std::sync::Arc;
use std::time::{Duration, Instant};
use native_tls::{Certificate, TlsConnector};
use once_cell::sync::Lazy;
use once_cell::sync::OnceCell;
use ureq::Response;
use crate::terminal;
@ -16,13 +16,22 @@ use crate::terminal;
/// Keep track of this many download speed samples.
const SPEED_SAMPLES: usize = 5;
/// Lazily loads a custom CA certificate if present, but if there's an error
/// loading certificate, it just uses the default configuration.
static CERT: Lazy<Option<Certificate>> = Lazy::new(|| {
let path = crate::ARGS.cert.as_ref()?;
let pem = std::fs::read(path).ok()?;
Certificate::from_pem(&pem).ok()
});
/// Load a certificate from the file system if the `--cert` argument or
/// `TYPST_CERT` environment variable is present. The certificate is cached for
/// efficiency.
///
/// - Returns `None` if `--cert` and `TYPST_CERT` are not set.
/// - Returns `Some(Ok(cert))` if the certificate was loaded successfully.
/// - Returns `Some(Err(err))` if an error occurred while loading the certificate.
fn cert() -> Option<Result<&'static Certificate, io::Error>> {
static CERT: OnceCell<Certificate> = OnceCell::new();
crate::ARGS.cert.as_ref().map(|path| {
CERT.get_or_try_init(|| {
let pem = std::fs::read(path)?;
Certificate::from_pem(&pem).map_err(io::Error::other)
})
})
}
/// Download binary data and display its progress.
#[allow(clippy::result_large_err)]
@ -49,8 +58,8 @@ pub fn download(url: &str) -> Result<ureq::Response, ureq::Error> {
}
// Apply a custom CA certificate if present.
if let Some(cert) = &*CERT {
tls.add_root_certificate(cert.clone());
if let Some(cert) = cert() {
tls.add_root_certificate(cert?.clone());
}
// Configure native TLS.