Add "Parse CSR"

src/core/config/Categories.json

@@ -100,6 +100,7 @@
         "ops": [
             "Parse X.509 certificate",
             "Parse ASN.1 hex string",
+            "Parse CSR",
             "PEM to Hex",
             "Hex to PEM",
             "Hex to Object Identifier",

src/core/operations/ParseCSR.mjs

@@ -0,0 +1,56 @@
+/**
+ * @author arnydo [arnydo@protonmail.com]
+ * @copyright Crown Copyright 2018
+ * @license Apache-2.0
+ */
+
+import Operation from "../Operation";
+import forge from "node-forge/dist/forge.min.js";
+
+/**
+ * ParseCSR operation
+ */
+class ParseCSR extends Operation {
+
+    /**
+     * ParseCSR constructor
+     */
+    constructor() {
+        super();
+
+        this.name = "Parse CSR";
+        this.module = "PublicKey";
+        this.description = "Parses a Base64 encoded Certificate Signing Request (CSR).<br><br>In public key infrastructure (PKI) systems, a certificate signing request (also CSR or certification request) is a message sent from an applicant to a certificate authority in order to apply for a digital identity certificate. It usually contains the public key for which the certificate should be issued, identifying information (such as a domain name) and integrity protection (e.g., a digital signature). The most common format for CSRs is the PKCS #10 specification and another is the Signed Public Key and Challenge SPKAC format generated by some web browsers.<br><br>This operation displays the contents of a certificate signing request in a human readable format, similar to the openssl command line tool.";
+        this.infoURL = "https://en.wikipedia.org/wiki/Certificate_signing_request";
+        this.inputType = "string";
+        this.outputType = "string";
+        this.args = [];
+    }
+
+    /**
+     * @param {string} input
+     * @param {Object[]} args
+     * @returns {string}
+     */
+    run(input) {
+        if (!input.length) {
+            return "No input";
+        }
+        const csr = forge.pki.certificationRequestFromPem(input);
+        const extInfo = csr.getAttribute({ name: "extensionRequest" }).extensions;
+        const subjectAltNames = extInfo[0].altNames.map(function(name){
+            return name.value;
+        });
+        return `CommonName: ${csr.subject.getField("CN").value}
+Locality: ${csr.subject.getField("L").value}
+State: ${csr.subject.getField("ST").value}
+Country: ${csr.subject.getField("C").value}
+EmailAddress: ${csr.subject.getField("E").value}
+Subject Alternative Names: ${subjectAltNames.map(function (name) {
+        return name;
+    })}`;
+    }
+
+}
+
+export default ParseCSR;