Change Nodejs versions to support v8

Author: Dexus

.travis.yml

@@ -7,7 +7,7 @@ node_js:
   - "0.12"
   - "4"
   - "6"
-  - "7"
+  - "8"
 before_install:
   - npm install -g grunt-cli
 before_script:

lib/pem.js

@@ -1,5 +1,14 @@
 'use strict';
 
+var log4js = require('log4js'); 
+var logger = log4js.getLogger();
+log4js.configure({
+  appenders: { console: { type: 'console' } },
+  categories: { default: { appenders: [ 'console' ], level: 'info' } }
+});
+console.log = logger.info.bind(logger);
+logger.level = 'TRACE';
+
 var spawn = require('child_process').spawn;
 var pathlib = require('path');
 var fs = require('fs');
@@ -813,9 +822,8 @@ function verifySigningChain(certificate, ca, callback) {
         '--TMPFILE--'
     ];
 
-    spawnWrapper(params, files, function(err, code, stdout, stderr) {
+    spawnWrapper(params, files, function(err, code, stdout) {
         if (err) {
-            console.log(err, stdout, stderr);
             return callback(err);
         }
 
@@ -1064,7 +1072,7 @@ function spawnOpenSSL(params, binary, callback) {
             if (--needed < 1) {
                 finished = true;
                 if (code) {
-                    if (code === 2 && openSslVersion === "LIBRESSL") {
+                    if (code === 2 && stderr === "") {
                         return callback(null, code, stdout, stderr);
                     }
                     return callback(new Error('Invalid openssl exit code: ' + code + '\n% openssl ' + params.join(' ') + '\n' + stderr), code);
@@ -1199,4 +1207,11 @@ spawnOpenSSL(['version'], false, function(err, code, stdout, stderr) {
     openSslVersion = tmp && tmp[0] ? "LibreSSL" : "openssl";
 
     openSslVersion = openSslVersion.toUpperCase();
+
+    logger.debug(openSslVersion);
+    logger.debug(text);
+    logger.debug(openSslVersion);
+    logger.debug(text);
+    logger.debug(openSslVersion);
+    logger.debug(text);
 });

package.json

@@ -22,7 +22,8 @@
   "dependencies": {
     "md5": "^2.2.1",
     "os-tmpdir": "^1.0.1",
-    "which": "^1.2.4"
+    "which": "^1.2.4",
+    "log4js": "*"
   },
   "devDependencies": {
     "grunt": "^1.0.1",