refine the decryptMiniProgramUser (#52)

Author: JacksonTian

lib/oauth.js

@@ -1,9 +1,10 @@
 'use strict';
 
 var urllib = require('urllib');
-var wrapper = require('./util').wrapper;
 var extend = require('util')._extend;
 var querystring = require('querystring');
+
+var wrapper = require('./util').wrapper;
 var WxBizDataCrypt = require('./wx_biz_data_crypt');
 
 var AccessToken = function (data) {
@@ -326,16 +327,10 @@ OAuth.prototype._getUser = function (options, accessToken, callback) {
  * @param {Object} options 需要解密的对象
  * @param {String} options.encryptedData 从小程序中获得的加密过的字符串
  * @param {String} options.iv 从小程序中获得的加密算法初始向量
- * @param {Function} callback 回调函数
  */
-OAuth.prototype.decryptMiniProgramUser = function (options, callback) {
-  try {
-    var decrypter = new WxBizDataCrypt(this.appid, options.sessionKey);
-    var user = decrypter.decryptData(options.encryptedData, options.iv);
-  }catch (e) {
-    return callback(new Error('error occurred when trying to decrypt mini-program user data'));
-  }
-  return callback(null, user);
+OAuth.prototype.decryptMiniProgramUser = function (options) {
+  var decrypter = new WxBizDataCrypt(this.appid, options.sessionKey);
+  return decrypter.decryptData(options.encryptedData, options.iv);
 };
 
 /**
@@ -480,11 +475,18 @@ OAuth.prototype.getUserByCode = function (options, callback) {
         return callback(err);
       }
       var sessionKey = result.data.session_key;
-      that.decryptMiniProgramUser({
-        sessionKey,
-        encryptedData: options.encryptedData,
-        iv: options.iv,
-      }, callback);
+      var user;
+      try {
+        user = that.decryptMiniProgramUser({
+          sessionKey,
+          encryptedData: options.encryptedData,
+          iv: options.iv,
+        });
+      } catch (ex) {
+        return callback(ex);
+      }
+
+      callback(null, user);
     });
   } else {
     this.getAccessToken(code, function (err, result) {

package.json

@@ -15,7 +15,7 @@
     "wechat"
   ],
   "dependencies": {
-    "urllib": "2.7.0"
+    "urllib": "^2.30.0"
   },
   "devDependencies": {
     "coveralls": "*",

test/oauth.test.js

@@ -491,19 +491,17 @@ describe('oauth.js', function () {
           });
         });
 
-        muk(api, 'decryptMiniProgramUser', function (code, callback) {
-          process.nextTick(function () {
-            callback(null, {
-              openId: 'OPENID',
-              nickName: 'NICKNAME',
-              gender: 0,
-              city: 'CITY',
-              province: 'PROVINCE',
-              country: 'COUNTRY',
-              avatarUrl: 'AVATARURL',
-              unionId: 'UNIONID',
-            });
-          });
+        muk(api, 'decryptMiniProgramUser', function (code) {
+          return {
+            openId: 'OPENID',
+            nickName: 'NICKNAME',
+            gender: 0,
+            city: 'CITY',
+            province: 'PROVINCE',
+            country: 'COUNTRY',
+            avatarUrl: 'AVATARURL',
+            unionId: 'UNIONID',
+          };
         });
       });
 
@@ -594,11 +592,10 @@ describe('oauth.js', function () {
   describe('decryptMiniProgramUser', function () {
     describe('should not ok', function () {
       var api = new OAuth('appid', 'secret', null, null, true);
-      it('should not ok with invalid data', function (done) {
-        api.decryptMiniProgramUser({}, function (err, result) {
-          expect(err).to.be.a(Error);
-          done();
-        });
+      it('should not ok with invalid data', function () {
+        expect(function () {
+          api.decryptMiniProgramUser({});
+        }).to.throwError();
       });
     });
   });