feat: Pass a valid auth token. (#248)

* feat:  Pass a valid auth token.

This allows the user to pass a valid auth token to the client to autheticate requests

README.md

@@ -188,6 +188,21 @@ const openshiftRestClient = require('openshift-rest-client').OpenshiftClient;
 })();
 ```
 
+It is also possible to send in a valid auth token instead of a username/password.  If we use the above example,  the settings object might look something like this:
+
+```
+const settings = {
+  };
+
+settings.config = {
+  url: process.env.CLUSTER_URL,
+  auth: {
+    token: process.env.TOKEN
+  },
+  insecureSkipTlsVerify: true
+};
+```
+
 To see more examples of how to customize your config, check out the [kubernetes-client Initializing section](https://www.npmjs.com/package/kubernetes-client#initializing)
 
 #### Load API from a Remote Cluster

lib/basic-auth-request.js

@@ -9,6 +9,31 @@ const buildError = (requestError) => {
   return err;
 };
 
+// Use this function if a user passes in just an auth token
+// This will return a User Openshift Object
+async function getUserFromAuthToken (settings) {
+  return new Promise((resolve, reject) => {
+    const req = {
+      method: 'GET',
+      url: `${settings.url}/apis/user.openshift.io/v1/users/~`,
+      auth: {
+        bearer: settings.token
+      },
+      strictSSL: 'insecureSkipTlsVerify' in settings ? !settings.insecureSkipTlsVerify : true
+    };
+
+    request(req, (err, resp, body) => {
+      if (err) return reject(buildError(err));
+
+      if (resp.statusCode === 401) {
+        return reject(new Error(`401 Unable to authenticate with token ${settings.token}`));
+      }
+
+      return resolve(JSON.parse(body));
+    });
+  });
+}
+
 async function getTokenFromBasicAuth (settings) {
   // Get the Auth URL from Openshift endpoint
   const authUrl = await getAuthUrlFromOCP(settings.url, 'insecureSkipTlsVerify' in settings ? !settings.insecureSkipTlsVerify : true);
@@ -46,5 +71,6 @@ async function getTokenFromBasicAuth (settings) {
 }
 
 module.exports = {
-  getTokenFromBasicAuth
+  getTokenFromBasicAuth,
+  getUserFromAuthToken
 };

lib/openshift-rest-client.js

@@ -23,7 +23,7 @@ const fs = require('fs');
 const path = require('path');
 
 const { Client, alias, KubeConfig } = require('kubernetes-client');
-const { getTokenFromBasicAuth } = require('./basic-auth-request');
+const { getTokenFromBasicAuth, getUserFromAuthToken } = require('./basic-auth-request');
 const Request = require('kubernetes-client/backends/request');
 
 const serviceCatalogCRD = require('./specs/service-catalog-crd.json');
@@ -65,6 +65,7 @@ const spec = JSON.parse(zlib.gunzipSync(fs.readFileSync(path.join(__dirname, 'sp
  * @param {object|string} [settings.config] - custom config object(KubeConfig or object).  String value will assume a config file location.
  * @param {string} [settings.config.url] - Openshift cluster url
  * @param {object} [settings.config.auth] -
+ * @param {string} [settings.config.auth.token] - auth token used to authenticate to the Openshift Cluster
  * @param {string} [settings.config.auth.username] - username to authenticate to Openshift
  * @param {string} [settings.config.auth.password] - password to authenticate to Openshift
  * @param {boolean} [settings.config.insecureSkipTlsVerify] - flag to ignore TLS verification
@@ -92,15 +93,23 @@ async function openshiftClient (settings = {}) {
       clientConfig.backend = new Request({ kubeconfig });
     } else if (typeof config === 'object' && config.auth) {
       // Check for the auth username password
-      if ('user' in config.auth || 'username' in config.auth) {
+      if ('user' in config.auth || 'username' in config.auth || 'token' in config.auth) {
         // They are trying the basic auth.
         // Get the access token using the username and password
         // Check to see if we are passing in a username/password
         const { insecureSkipTlsVerify, url, authUrl } = config;
-        const user = config.auth.username || config.auth.user;
+        let user = config.auth.username || config.auth.user;
         const password = config.auth.password || config.auth.pass;
 
-        const accessToken = await getTokenFromBasicAuth({ insecureSkipTlsVerify, url, user, password, authUrl });
+        let accessToken;
+
+        if (config.auth.token) {
+          const openshiftUser = await getUserFromAuthToken({ insecureSkipTlsVerify, url, token: config.auth.token });
+          accessToken = config.auth.token;
+          user = openshiftUser.metadata.name;
+        } else {
+          accessToken = await getTokenFromBasicAuth({ insecureSkipTlsVerify, url, user, password, authUrl });
+        }
         const clusterUrl = url;
         // Create clusterName from clusterUrl by removing 'https://'
         const clusterName = clusterUrl.replace(/(^\w+:|^)\/\//, '');

test/basic-auth-request-test.js

@@ -147,3 +147,90 @@ test('basic auth request with request error', (t) => {
     t.end();
   });
 });
+
+// Getting the User from a Token Tests
+
+test('get user from token', (t) => {
+  const basicAuthRequest = proxyquire('../lib/basic-auth-request', {
+    request: (requestObject, cb) => {
+      t.equal(requestObject.strictSSL, false, 'should be false');
+      return cb(null, {
+        statusCode: 200
+      },
+      JSON.stringify({
+        kind: 'User',
+        metadata: {
+          name: 'developer'
+        }
+      })
+      );
+    }
+  });
+
+  const settings = {
+    url: 'http://',
+    token: '12346',
+    insecureSkipTlsVerify: true
+  };
+
+  const p = basicAuthRequest.getUserFromAuthToken(settings);
+
+  t.equal(p instanceof Promise, true, 'is an Promise');
+
+  p.then((userObject) => {
+    t.equal(userObject.metadata.name, 'developer', 'user should be equal');
+    t.end();
+  });
+});
+
+test('get user from token with 401 status code', (t) => {
+  const basicAuthRequest = proxyquire('../lib/basic-auth-request', {
+    request: (requestObject, cb) => {
+      t.equal(requestObject.strictSSL, false, 'should be false');
+      return cb(null, {
+        statusCode: 401,
+        request: {
+          uri: {
+            host: 'https://'
+          }
+        }
+      });
+    }
+  });
+
+  const settings = {
+    url: 'http://',
+    token: '12346',
+    insecureSkipTlsVerify: true
+  };
+
+  const p = basicAuthRequest.getUserFromAuthToken(settings);
+
+  t.equal(p instanceof Promise, true, 'is an Promise');
+
+  p.catch((error) => {
+    t.equal(error.message,
+      '401 Unable to authenticate with token 12346',
+      'should be equal');
+    t.end();
+  });
+});
+
+test('get user from token with request error', (t) => {
+  const basicAuthRequest = proxyquire('../lib/basic-auth-request', {
+    request: (requestObject, cb) => {
+      return cb({ message: 'Error' }, {});
+    }
+  });
+
+  const settings = {};
+
+  const p = basicAuthRequest.getUserFromAuthToken(settings);
+
+  t.equal(p instanceof Promise, true, 'is an Promise');
+
+  p.catch((error) => {
+    t.equal(error.message, 'Error', 'should be equal');
+    t.end();
+  });
+});

test/openshift-client-test.js

@@ -90,6 +90,72 @@ test('test basic auth - username/password', async (t) => {
   t.end();
 });
 
+test('test basic auth - token', async (t) => {
+  const settings = {
+    config: {
+      url: 'http://test-url',
+      auth: {
+        token: '12345'
+      }
+    }
+  };
+
+  const openshiftRestClient = proxyquire('../lib/openshift-rest-client', {
+    './basic-auth-request': {
+      getTokenFromBasicAuth: () => {
+        t.fail('should not reach this');
+      },
+      getUserFromAuthToken: () => {
+        t.pass('should reach here');
+        return Promise.resolve({
+          kind: 'User',
+          metadata: {
+            user: 'developer'
+          }
+        });
+      }
+    }
+  });
+
+  await openshiftRestClient(settings);
+  t.pass();
+  t.end();
+});
+
+test('test basic auth - token, user and password', async (t) => {
+  const settings = {
+    config: {
+      url: 'http://test-url',
+      auth: {
+        username: 'developer',
+        password: 'developer',
+        token: '12345'
+      }
+    }
+  };
+
+  const openshiftRestClient = proxyquire('../lib/openshift-rest-client', {
+    './basic-auth-request': {
+      getTokenFromBasicAuth: () => {
+        t.fail('should not reach this');
+      },
+      getUserFromAuthToken: () => {
+        t.pass('should reach here');
+        return Promise.resolve({
+          kind: 'User',
+          metadata: {
+            user: 'developer'
+          }
+        });
+      }
+    }
+  });
+
+  await openshiftRestClient(settings);
+  t.pass();
+  t.end();
+});
+
 test('test basic auth - user/pass', async (t) => {
   const settings = {
     config: {