use tlsfs module to load certs

package.json

@@ -1,6 +1,6 @@
 {
   "name": "smtp2http",
-  "version": "1.1.0",
+  "version": "1.1.1",
   "description": "SMTP to HTTP gateway",
   "bin": {
     "smtp2http": "./smtp2http.js"
@@ -10,7 +10,9 @@
     "squabble": "^1",
     "request": "^2",
     "mailparser": "^0.5",
-    "colors": "^1"
+    "colors": "^1",
+    "objektify": "^1",
+    "tlsfs": "git+https://e549446c3065af492571a7566890c26144efcab3:x-oauth-basic@github.com/Zingle/tlsfs.git#master"
   },
   "repository": {
     "type": "git",

smtp2http.js

@@ -2,7 +2,8 @@
 var squabble = require("squabble").createParser(),
     smtp = require("smtp-protocol"),
     http = require("request"),
-    readFile = require("fs").readFileSync,
+    tlsfs = require("tlsfs"),
+    copy = require("objektify").copy,
     MailParser = require("mailparser").MailParser,
     args, tlsTokens, serverOpts = {};
 
@@ -36,23 +37,8 @@ if (args.named["--quiet"]) {
 }
 
 if (args.named["--tls"]) {
-    tlsTokens = args.named["--tls"].split(":");
-    switch (tlsTokens.length) {
-        case 1:
-            serverOpts.pfx = readFile(tlsTokens.shift());
-            break;
-        case 2:
-            serverOpts.cert = readFile(tlsTokens.shift());
-            serverOpts.key = readFile(tlsTokens.shift());
-            break;
-        case 3:
-            serverOpts.cert = readFile(tlsTokens.shift());
-            serverOpts.key = readFile(tlsTokens.shift());
-            serverOpts.ca = readFile(tlsTokens.shift());
-            break;
-        default:
-            throw new Error("unrecognized --tls argument");
-    }
+    tlsPaths = args.named["--tls"].split(":");
+    copy(serverOpts, tlsfs.readCertsSync(tlsPaths));
 }
 
 // create and start SMTP server