Add bootstrap generate-user-token command

Add command to generate a user token for connecting to the master server
web interface.  This servers as an alternative to generating a control
config for use with clusterioctl.

packages/master/README.md

@@ -110,6 +110,13 @@ exist in the cluster and grant it full cluster admin permission.  You
 should be using your own Factorio multiplayer username here.
 
 
+#### `bootstrap generate-user-token <name>`
+
+Generate an access token for logging in and possibly managing the
+cluster from the given user account.  This can be used both in the web
+interface and as the `master_token` to connect with clusterioctl.
+
+
 #### `bootstrap create-ctl-config <name>`
 
 Creates a clusterioctl config for the given user with url and token set

packages/master/master.js

@@ -1578,6 +1578,7 @@ async function startServer() {
 		.command("bootstrap", "Bootstrap access to cluster", yargs => {
 			yargs
 				.command("create-admin <name>", "Create a cluster admin")
+				.command("generate-user-token <name>", "Generate authentication token for the given user")
 				.command("create-ctl-config <name>", "Create clusterioctl config for the given user", yargs => {
 					yargs.option("output", {
 						describe: "Path to output config (- for stdout)", type: "string",
@@ -1664,6 +1665,15 @@ async function startServer() {
 			admin.isAdmin = true;
 			await saveUsers(masterConfig.get("master.database_directory"), "users.json");
 
+		} else if (subCommand === "generate-user-token") {
+			let user = db.users.get(args.name);
+			if (!user) {
+				console.error(`No user named '${args.name}'`);
+				process.exitCode = 1;
+				return;
+			}
+			console.log(user.createToken(masterConfig.get("master.auth_secret")));
+
 		} else if (subCommand === "create-ctl-config") {
 			let admin = db.users.get(args.name);
 			if (!admin) {

test/integration/clusterio.js

@@ -5,7 +5,7 @@ const path = require("path");
 
 const libLink = require("@clusterio/lib/link");
 
-const { slowTest, get, execCtl, sendRcon, getControl, instancesDir } = require("./index");
+const { slowTest, get, exec, execCtl, sendRcon, getControl, instancesDir } = require("./index");
 
 
 async function getInstances() {
@@ -19,6 +19,20 @@ async function checkInstanceStatus(id, status) {
 }
 
 describe("Integration of Clusterio", function() {
+	describe("clusteriomaster", function() {
+		describe("bootstrap generate-user-token", function() {
+			it("work for existing user", async function() {
+				await exec("node ../../packages/master bootstrap generate-user-token test");
+			});
+
+			it("fails if user does not exist", async function() {
+				await assert.rejects(
+					exec("node ../../packages/master bootstrap generate-user-token invalid")
+				);
+			});
+		});
+	});
+
 	describe("clusterioctl", function() {
 		describe("slave list", function() {
 			it("runs", async function() {