initial commit

Signed-off-by: sisungo <[email protected]>

.gitignore

@@ -0,0 +1,3 @@
+/target
+/Cargo.lock
+/out

Cargo.toml

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+[package]
+name = "ca-certificates"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+x509-parser = "0.18"
+pem = "3"

src/main.rs

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+use pem::Pem;
+
+static BUNDLE: &[u8] = include_bytes!("../data/mozilla.txt");
+
+fn main() {
+    _ = std::fs::remove_dir_all("./out");
+    std::fs::create_dir("./out").unwrap();
+
+    for cert in x509_parser::pem::Pem::iter_from_buffer(BUNDLE) {
+        let cert = cert.unwrap();
+        let cert = cert.parse_x509().unwrap();
+        let common_name = cert
+            .subject()
+            .iter_common_name()
+            .next()
+            .map(|x| x.as_str().ok())
+            .flatten();
+        let cert_name = match common_name {
+            Some(common_name) => common_name.to_string(),
+            None => cert.raw_serial_as_string(),
+        };
+        let file_name = cert_name
+            .replace(":", "_")
+            .replace(" ", "_")
+            .replace(".", "_");
+        std::fs::write(
+            format!("./out/{file_name}.pem"),
+            pem::encode(&Pem::new("CERTIFICATE", cert.as_raw())).as_bytes(),
+        )
+        .unwrap();
+    }
+}