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backend/node_modules/google-p12-pem/index.js

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+var forge = require('node-forge');
+var fs = require('fs');
+
+/**
+ * Convert a .p12 file to .pem string.
+ * This is the constructor so it can also be used to
+ * create an object that can be reused to get different keys.
+ *
+ * @param  {string}    filename The .p12 key filename.
+ * @param  {Function=} callback The callback function.
+ */
+function GoogleP12toPem(filename, callback) {
+  if (!(this instanceof GoogleP12toPem)) {
+    var gp12 = new GoogleP12toPem();
+    return gp12.getPem(filename, callback);
+  }
+
+  this.pem = null;
+}
+
+/**
+ * Convert a .p12 file to .pem string
+ * @param  {string}    filename The .p12 key filename.
+ * @param  {Function=} callback The callback function.
+ * @return {string=}            The .pem private key if no callback provided.
+ */
+GoogleP12toPem.prototype.getPem = function(filename, callback) {
+  var self = this;
+
+  if (typeof callback === 'function') {
+    fs.readFile(filename, { encoding: 'base64' }, function(err, keyp12) {
+      if (err) {
+        callback(err, null);
+        return;
+      }
+      try {
+        this.pem = _convertToPem(keyp12);
+      } catch (e) {
+        callback(e, null);
+        return;
+      }
+      callback(null, this.pem);
+    });
+  } else {
+    var keyp12 = fs.readFileSync(filename, { encoding: 'base64' });
+    this.pem = _convertToPem(keyp12);
+    return this.pem;
+  }
+
+  function _convertToPem(p12base64) {
+    var p12Der = forge.util.decode64(p12base64);
+    var p12Asn1 = forge.asn1.fromDer(p12Der);
+    var p12 = forge.pkcs12.pkcs12FromAsn1(p12Asn1, 'notasecret');
+    var privateKey = p12.getBagsByFriendlyName('privatekey')[0].key;
+    var pem = forge.pki.privateKeyToPem(privateKey);
+    return pem.replace(/\r\n/g, '\n');
+  }
+};
+
+module.exports = GoogleP12toPem;