add TLS support

dshackle-cli/src/cli.js

@@ -6,10 +6,10 @@ import util from "util";
 export function cli(args) {
     let opts = parseArgumentsIntoOptions(args);
     if (!opts.url) {
-        console.log("Err: URL not specified!")
+        console.log("Err: URL not specified!!!")
         return
     }
-    describe(opts.url, (error, response) => {
+    describe(opts.url, opts.ca, opts.cert, opts.key, (error, response) => {
         if (error) {
             console.error(clc.red('Connection to ' + opts.url + ' failed! [' + error.message + ']'));
         } else {
@@ -42,6 +42,9 @@ function parseArgumentsIntoOptions(rawArgs) {
     const args = arg(
         {
             '--print': Boolean,
+            '--ca': String,
+            '--cert': String,
+            '--key': String,
             '-p': '--print'
         },
         {
@@ -50,7 +53,10 @@ function parseArgumentsIntoOptions(rawArgs) {
     );
     return {
         print: args['--print'] || false,
-        url: args._[0]
+        url: args._[0],
+        ca: args['--ca'],
+        cert: args['--cert'],
+        key: args['--key']
     };
 }
 

dshackle-cli/src/grpc-clent.js

@@ -1,6 +1,7 @@
 const grpc = require("@grpc/grpc-js");
 const path = require('path')
 const protoLoader = require("@grpc/proto-loader");
+const fs = require('fs');
 
 const PROTO_PATH = path.join(__dirname, "../grpc/proto/blockchain.proto");
 
@@ -15,11 +16,21 @@ const options = {
 const packageDefinition = protoLoader.loadSync(PROTO_PATH, options);
 const emerald = grpc.loadPackageDefinition(packageDefinition).emerald
 
-export function describe(url, handler) {
+export function describe(url, ca, cert, key, handler) {
+    let credentials = grpc.credentials.createInsecure()
+    if (ca || cert || key) {
+        console.log("Using TLS")
+        credentials = grpc.credentials.createSsl(
+            ca ? fs.readFileSync(ca) : null,
+            key ? fs.readFileSync(key) : null,
+            cert ? fs.readFileSync(cert) : null
+        );
+    }
     const client = new emerald.Blockchain(
         url,
-        grpc.credentials.createInsecure()
+        credentials
     );
+
     console.log('Connecting to: ' + url + '...')
     client.Describe({}, handler);
 }