Fix relative path loading.

src/config.ts

@@ -45,6 +45,11 @@ export class KubeConfig {
      */
     public 'currentContext': string;
 
+    /**
+     * Root directory for a config file driven config. Used for loading relative cert paths.
+     */
+    public 'rootDirectory': string;
+
     public getContexts() {
         return this.contexts;
     }
@@ -97,6 +102,7 @@ export class KubeConfig {
     }
 
     public loadFromFile(file: string) {
+        this.rootDirectory = path.dirname(file);
         this.loadFromString(fs.readFileSync(file, 'utf8'));
     }
 
@@ -255,15 +261,18 @@ export class KubeConfig {
         if (cluster != null && cluster.skipTLSVerify) {
             opts.rejectUnauthorized = false;
         }
-        const ca = cluster != null ? bufferFromFileOrString(cluster.caFile, cluster.caData) : null;
+        const ca =
+            cluster != null
+                ? bufferFromFileOrString(this.rootDirectory, cluster.caFile, cluster.caData)
+                : null;
         if (ca) {
             opts.ca = ca;
         }
-        const cert = bufferFromFileOrString(user.certFile, user.certData);
+        const cert = bufferFromFileOrString(this.rootDirectory, user.certFile, user.certData);
         if (cert) {
             opts.cert = cert;
         }
-        const key = bufferFromFileOrString(user.keyFile, user.keyData);
+        const key = bufferFromFileOrString(this.rootDirectory, user.keyFile, user.keyData);
         if (key) {
             opts.key = key;
         }
@@ -355,8 +364,11 @@ export class Config {
 }
 
 // This is public really only for testing.
-export function bufferFromFileOrString(file?: string, data?: string): Buffer | null {
+export function bufferFromFileOrString(root?: string, file?: string, data?: string): Buffer | null {
     if (file) {
+        if (!path.isAbsolute(file) && root) {
+            file = path.join(root, file);
+        }
         return fs.readFileSync(file);
     }
     if (data) {

src/config_test.ts

@@ -1,6 +1,6 @@
 import { readFileSync } from 'fs';
 import * as https from 'https';
-import { join } from 'path';
+import { dirname, join } from 'path';
 
 import { expect } from 'chai';
 import mockfs = require('mock-fs');
@@ -167,7 +167,7 @@ describe('KubeConfig', () => {
         it('should load the kubeconfig file properly', () => {
             const kc = new KubeConfig();
             kc.loadFromFile(kcFileName);
-
+            expect(kc.rootDirectory).to.equal(dirname(kcFileName));
             validateFileLoad(kc);
         });
         it('should fail to load a missing kubeconfig file', () => {
@@ -1012,13 +1012,28 @@ describe('KubeConfig', () => {
     });
 
     describe('BufferOrFile', () => {
+        it('should load from root if present', () => {
+            const data = 'some data for file';
+            const arg: any = {
+                configDir: {
+                    config: data,
+                },
+            };
+            mockfs(arg);
+            const inputData = bufferFromFileOrString('configDir', 'config');
+            expect(inputData).to.not.equal(null);
+            if (inputData) {
+                expect(inputData.toString()).to.equal(data);
+            }
+            mockfs.restore();
+        });
         it('should load from a file if present', () => {
             const data = 'some data for file';
             const arg: any = {
                 config: data,
             };
             mockfs(arg);
-            const inputData = bufferFromFileOrString('config');
+            const inputData = bufferFromFileOrString(undefined, 'config');
             expect(inputData).to.not.equal(null);
             if (inputData) {
                 expect(inputData.toString()).to.equal(data);