From 61f2bb9b883343c89fcb28b7ef4ed1d692110ee4 Mon Sep 17 00:00:00 2001
From: Owen Smith <owen@omsmith.ca>
Date: Mon, 14 May 2018 10:01:53 -0400
Subject: [PATCH] deps: replace base64url with inline definition

---
 lib/sign-stream.js   | 9 ++++++++-
 lib/verify-stream.js | 6 +++---
 package.json         | 1 -
 3 files changed, 11 insertions(+), 5 deletions(-)

diff --git a/lib/sign-stream.js b/lib/sign-stream.js
index a7bb2d5..9198457 100644
--- a/lib/sign-stream.js
+++ b/lib/sign-stream.js
@@ -1,11 +1,18 @@
 /*global module*/
-var base64url = require('base64url');
 var DataStream = require('./data-stream');
 var jwa = require('jwa');
 var Stream = require('stream');
 var toBuffer = require('./to-buffer');
 var util = require('util');
 
+function base64url(buf) {
+  return buf
+    .toString('base64')
+    .replace(/=/g, '')
+    .replace(/\+/g, '-')
+    .replace(/\//g, '_');
+}
+
 function jwsSecuredInput(header, payload, encoding) {
   encoding = encoding || 'utf8';
   var encodedHeader = base64url(toBuffer(header));
diff --git a/lib/verify-stream.js b/lib/verify-stream.js
index d9bfa2b..39f7c73 100644
--- a/lib/verify-stream.js
+++ b/lib/verify-stream.js
@@ -1,5 +1,5 @@
 /*global module*/
-var base64url = require('base64url');
+var Buffer = require('safe-buffer').Buffer;
 var DataStream = require('./data-stream');
 var jwa = require('jwa');
 var Stream = require('stream');
@@ -20,7 +20,7 @@ function safeJsonParse(thing) {
 
 function headerFromJWS(jwsSig) {
   var encodedHeader = jwsSig.split('.', 1)[0];
-  return safeJsonParse(base64url.decode(encodedHeader, 'binary'));
+  return safeJsonParse(Buffer.from(encodedHeader, 'base64').toString('binary'));
 }
 
 function securedInputFromJWS(jwsSig) {
@@ -34,7 +34,7 @@ function signatureFromJWS(jwsSig) {
 function payloadFromJWS(jwsSig, encoding) {
   encoding = encoding || 'utf8';
   var payload = jwsSig.split('.')[1];
-  return base64url.decode(payload, encoding);
+  return Buffer.from(payload, 'base64').toString(encoding);
 }
 
 function isValidJws(string) {
diff --git a/package.json b/package.json
index 2236e76..bc5e69e 100644
--- a/package.json
+++ b/package.json
@@ -24,7 +24,6 @@
   "readmeFilename": "readme.md",
   "gitHead": "c0f6b27bcea5a2ad2e304d91c2e842e4076a6b03",
   "dependencies": {
-    "base64url": "^2.0.0",
     "jwa": "^1.1.5",
     "safe-buffer": "^5.0.1"
   },