cloudiful_server/core/
tls.rs

1use std::{fs::File, io::BufReader, sync::Arc};
2
3use crate::core::{
4    ValidatedServerConfig,
5    error::{ServerError, TlsConfigLoadError},
6};
7
8pub fn load_tls_config<U>(
9    config: &ValidatedServerConfig<U>,
10) -> Result<Option<rustls::ServerConfig>, ServerError> {
11    let Some(tls) = config.tls.as_ref() else {
12        return Ok(None);
13    };
14
15    let _ = rustls::crypto::aws_lc_rs::default_provider().install_default();
16
17    let mut cert_file = BufReader::new(File::open(&tls.cert_path).map_err(|source| {
18        ServerError::Tls(TlsConfigLoadError::OpenCertificate {
19            path: tls.cert_path.clone(),
20            source,
21        })
22    })?);
23
24    let mut key_file = BufReader::new(File::open(&tls.cert_key_path).map_err(|source| {
25        ServerError::Tls(TlsConfigLoadError::OpenPrivateKey {
26            path: tls.cert_key_path.clone(),
27            source,
28        })
29    })?);
30
31    let tls_certs = rustls_pemfile::certs(&mut cert_file)
32        .collect::<Result<Vec<_>, _>>()
33        .map_err(|source| {
34            ServerError::Tls(TlsConfigLoadError::ReadCertificates {
35                path: tls.cert_path.clone(),
36                source,
37            })
38        })?;
39
40    let tls_key = rustls_pemfile::private_key(&mut key_file)
41        .map_err(|source| {
42            ServerError::Tls(TlsConfigLoadError::ReadPrivateKey {
43                path: tls.cert_key_path.clone(),
44                source,
45            })
46        })?
47        .ok_or_else(|| {
48            ServerError::Tls(TlsConfigLoadError::MissingPrivateKey {
49                path: tls.cert_key_path.clone(),
50            })
51        })?;
52
53    let builder = rustls::ServerConfig::builder();
54    let builder = match tls.client_ca.as_ref() {
55        Some(client_ca_path) => {
56            let mut client_ca_file = BufReader::new(File::open(client_ca_path).map_err(|source| {
57                ServerError::Tls(TlsConfigLoadError::OpenClientCa {
58                    path: client_ca_path.clone(),
59                    source,
60                })
61            })?);
62
63            let client_ca_certs = rustls_pemfile::certs(&mut client_ca_file)
64                .collect::<Result<Vec<_>, _>>()
65                .map_err(|source| {
66                    ServerError::Tls(TlsConfigLoadError::ReadClientCa {
67                        path: client_ca_path.clone(),
68                        source,
69                    })
70                })?;
71
72            let mut client_roots = rustls::RootCertStore::empty();
73            let (added, _ignored) = client_roots.add_parsable_certificates(client_ca_certs);
74            if added == 0 {
75                return Err(ServerError::Tls(TlsConfigLoadError::InvalidClientCa {
76                    path: client_ca_path.clone(),
77                    source: rustls::Error::General("no valid client CA certificates found".into()),
78                }));
79            }
80
81            let client_verifier = rustls::server::WebPkiClientVerifier::builder(Arc::new(client_roots))
82                .build()
83                .map_err(|source| {
84                    ServerError::Tls(TlsConfigLoadError::InvalidClientCa {
85                        path: client_ca_path.clone(),
86                        source: rustls::Error::General(source.to_string().into()),
87                    })
88                })?;
89
90            builder.with_client_cert_verifier(client_verifier)
91        }
92        None => builder.with_no_client_auth(),
93    };
94
95    builder
96        .with_single_cert(tls_certs, tls_key)
97        .map(Some)
98        .map_err(|source| ServerError::Tls(TlsConfigLoadError::InvalidConfig { source }))
99}
cloudiful_server/core/tls.rs

cloudiful_server/core/
tls.rs
