fkm-proxy 0.2.1

Fkm proxy client & server
Documentation 
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use std::sync::Arc;

use rustls::pki_types::{CertificateDer, ServerName, UnixTime};
use tokio_rustls::rustls::client::danger::{ServerCertVerified, ServerCertVerifier};

#[derive(Debug)]
pub struct NoCertVerification;
impl ServerCertVerifier for NoCertVerification {
    fn verify_server_cert(
        &self,
        _end_entity: &tokio_rustls::rustls::pki_types::CertificateDer<'_>,
        _intermediates: &[tokio_rustls::rustls::pki_types::CertificateDer<'_>],
        _server_name: &tokio_rustls::rustls::pki_types::ServerName<'_>,
        _ocsp_response: &[u8],
        _now: tokio_rustls::rustls::pki_types::UnixTime,
    ) -> Result<tokio_rustls::rustls::client::danger::ServerCertVerified, tokio_rustls::rustls::Error>
    {
        Ok(ServerCertVerified::assertion())
    }

    fn verify_tls12_signature(
        &self,
        _message: &[u8],
        _cert: &tokio_rustls::rustls::pki_types::CertificateDer<'_>,
        _dss: &tokio_rustls::rustls::DigitallySignedStruct,
    ) -> Result<
        tokio_rustls::rustls::client::danger::HandshakeSignatureValid,
        tokio_rustls::rustls::Error,
    > {
        Ok(tokio_rustls::rustls::client::danger::HandshakeSignatureValid::assertion())
    }

    fn verify_tls13_signature(
        &self,
        _message: &[u8],
        _cert: &tokio_rustls::rustls::pki_types::CertificateDer<'_>,
        _dss: &tokio_rustls::rustls::DigitallySignedStruct,
    ) -> Result<
        tokio_rustls::rustls::client::danger::HandshakeSignatureValid,
        tokio_rustls::rustls::Error,
    > {
        Ok(tokio_rustls::rustls::client::danger::HandshakeSignatureValid::assertion())
    }

    fn supported_verify_schemes(&self) -> Vec<tokio_rustls::rustls::SignatureScheme> {
        // All
        vec![
            tokio_rustls::rustls::SignatureScheme::RSA_PKCS1_SHA1,
            tokio_rustls::rustls::SignatureScheme::RSA_PKCS1_SHA256,
            tokio_rustls::rustls::SignatureScheme::ECDSA_NISTP256_SHA256,
            tokio_rustls::rustls::SignatureScheme::RSA_PKCS1_SHA384,
            tokio_rustls::rustls::SignatureScheme::ECDSA_NISTP384_SHA384,
            tokio_rustls::rustls::SignatureScheme::RSA_PKCS1_SHA512,
            tokio_rustls::rustls::SignatureScheme::ECDSA_NISTP521_SHA512,
            tokio_rustls::rustls::SignatureScheme::RSA_PSS_SHA256,
            tokio_rustls::rustls::SignatureScheme::RSA_PSS_SHA384,
            tokio_rustls::rustls::SignatureScheme::RSA_PSS_SHA512,
            tokio_rustls::rustls::SignatureScheme::ED25519,
            tokio_rustls::rustls::SignatureScheme::ED448,
        ]
    }
}

#[derive(Debug)]
pub struct SkipQuicServerVerification(Arc<rustls::crypto::CryptoProvider>);
impl SkipQuicServerVerification {
    pub fn new() -> Arc<Self> {
        Arc::new(Self(Arc::new(rustls::crypto::ring::default_provider())))
    }
}

impl rustls::client::danger::ServerCertVerifier for SkipQuicServerVerification {
    fn verify_server_cert(
        &self,
        _end_entity: &CertificateDer<'_>,
        _intermediates: &[CertificateDer<'_>],
        _server_name: &ServerName<'_>,
        _ocsp: &[u8],
        _now: UnixTime,
    ) -> Result<rustls::client::danger::ServerCertVerified, rustls::Error> {
        Ok(rustls::client::danger::ServerCertVerified::assertion())
    }

    fn verify_tls12_signature(
        &self,
        message: &[u8],
        cert: &CertificateDer<'_>,
        dss: &rustls::DigitallySignedStruct,
    ) -> Result<rustls::client::danger::HandshakeSignatureValid, rustls::Error> {
        rustls::crypto::verify_tls12_signature(
            message,
            cert,
            dss,
            &self.0.signature_verification_algorithms,
        )
    }

    fn verify_tls13_signature(
        &self,
        message: &[u8],
        cert: &CertificateDer<'_>,
        dss: &rustls::DigitallySignedStruct,
    ) -> Result<rustls::client::danger::HandshakeSignatureValid, rustls::Error> {
        rustls::crypto::verify_tls13_signature(
            message,
            cert,
            dss,
            &self.0.signature_verification_algorithms,
        )
    }

    fn supported_verify_schemes(&self) -> Vec<rustls::SignatureScheme> {
        self.0.signature_verification_algorithms.supported_schemes()
    }
}