create certificate reader

languageserver/src/certificate-reader.ts

@@ -0,0 +1,35 @@
+export class CertificateReader {
+  getAllRootCAs(): string[] {
+    switch (process.platform) {
+      case "darwin":
+        return this.getMacOSCerts();
+      case "win32":
+        return this.getWindowsCerts();
+      default:
+        // We only support self-signed certs from Windows anc MacOS
+        return [];
+    }
+  }
+
+  private getMacOSCerts(): string[] {
+    // loading modules here prevents unnecessary module loading
+    // see: https://stackoverflow.com/questions/9132772/lazy-loading-in-node-js
+    const macCa = require("@roamhq/mac-ca");
+    const forge = require("node-forge");
+
+    return macCa.all().map((cert: any) => forge.pki.certificateToPem(cert));
+  }
+
+  private getWindowsCerts(): string[] {
+    const ca = require("win-ca");
+
+    let rootCAs: string[] = [];
+
+    ca({
+      format: ca.der2.pem,
+      ondata: (crt: string) => rootCAs.push(crt)
+    });
+
+    return rootCAs;
+  }
+}