Merge

Crypto
WASM
TESTS

example-usage/server/src/tls.rs

@@ -1,4 +1,7 @@
 use std::fs;
+use std::path::Path;
+
+use base64::Engine;
 
 pub fn load_or_generate_tls(
     cert_path: &str,
@@ -10,6 +13,12 @@ pub fn load_or_generate_tls(
     }
 
     println!("Generating self-signed TLS certificate ...");
+    if let Some(parent) = Path::new(cert_path).parent() {
+        fs::create_dir_all(parent)?;
+    }
+    if let Some(parent) = Path::new(key_path).parent() {
+        fs::create_dir_all(parent)?;
+    }
     let key_pair = rcgen::KeyPair::generate()?;
     let params = rcgen::CertificateParams::new(vec!["localhost".into(), "127.0.0.1".into()])?;
     let cert = params.self_signed(&key_pair)?;
@@ -23,3 +32,39 @@ pub fn load_or_generate_tls(
 
     Ok((cert_str.into_bytes(), key_str.into_bytes()))
 }
+
+pub fn certificate_sha256_hex(cert: &[u8]) -> Result<String, Box<dyn std::error::Error>> {
+    let der = if cert.starts_with(b"-----BEGIN CERTIFICATE-----") {
+        let pem = std::str::from_utf8(cert)?;
+        let base64 = pem
+            .lines()
+            .filter(|line| !line.starts_with("-----"))
+            .collect::<String>();
+        base64::engine::general_purpose::STANDARD.decode(base64)?
+    } else {
+        cert.to_vec()
+    };
+
+    Ok(hex::encode(mtp::crypto::sha256(&der)))
+}
+
+pub fn export_webtransport_cert_hash(hash: &str) -> Result<(), Box<dyn std::error::Error>> {
+    let public_dir = if Path::new("web-client").exists() {
+        Path::new("web-client/public")
+    } else {
+        Path::new("example-usage/web-client/public")
+    };
+    fs::create_dir_all(public_dir)?;
+    fs::write(public_dir.join("mtp_dev_cert_hash.txt"), hash)?;
+
+    let dev_cert_dir = if Path::new("dev-cert").exists() {
+        Path::new("dev-cert")
+    } else {
+        Path::new("example-usage/dev-cert")
+    };
+    if dev_cert_dir.exists() {
+        fs::write(dev_cert_dir.join("sha256.txt"), hash)?;
+    }
+
+    Ok(())
+}