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rest-server: check permissions on proxy.key and proxy.pem files

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To avoid openssl's unhelpful error messages when the proxy.key or
proxy.pem files have the wrong permissions, we open the files. To load
the private key, we can simply read from the file and pass it to the
`set_private_key` openssl function. Sadly such a function does not exist
for loading certificate chains, so we have to open and close the file
before calling the `set_certificate_chain_file` fn.

Motivation: https://forum.proxmox.com/threads/proxmox-backup-tailscale-proxmox-backup-proxy-service-wont-boot.153204

Signed-off-by: Gabriel Goller <g.goller@proxmox.com>
This commit is contained in:
Gabriel Goller 2024-08-29 15:07:22 +02:00 committed by Wolfgang Bumiller
parent db69867d4d
commit d8fa495a50
1 changed files with 11 additions and 3 deletions
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14
proxmox-rest-server/src/connection.rs
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@ -12,13 +12,13 @@ use std::pin::{pin, Pin};
use std::sync::{Arc, Mutex};
use std::time::Duration;
use anyhow::{format_err, Context as _, Error};
use anyhow::{format_err, Context, Error};
use futures::FutureExt;
use hyper::server::accept;
use openssl::ec::{EcGroup, EcKey};
use openssl::nid::Nid;
use openssl::pkey::{PKey, Private};
use openssl::ssl::{SslAcceptor, SslFiletype, SslMethod};
use openssl::ssl::{SslAcceptor, SslMethod};
use openssl::x509::X509;
use tokio::net::{TcpListener, TcpStream};
use tokio::sync::mpsc;
@ -99,9 +99,17 @@ impl TlsAcceptorBuilder {
.context("failed to set tls acceptor certificate")?;
}
Some(Tls::FilesPem(key, cert)) => {
let key_content = std::fs::read(&key)
.with_context(|| format!("Failed to read from private key file {:?}", key))?;
acceptor
.set_private_key_file(key, SslFiletype::PEM)
.set_private_key(PKey::private_key_from_pem(&key_content)?.as_ref())
.context("failed to set tls acceptor private key file")?;
{
// Check the permissions by opening the file
let _cert_fd = std::fs::File::open(&cert)
.with_context(|| format!("Failed to open certificate at {:?}", cert))?;
}
acceptor
.set_certificate_chain_file(cert)
.context("failed to set tls acceptor certificate chain file")?;