对接微信解密

liangdas · Jun 11, 2017 · 82f92e1 · 82f92e1
1 parent 785e0c2
commit 82f92e1
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Showing 6 changed files with 135 additions and 44 deletions.
diff --git a/go/utils/security.go b/go/utils/security.go
@@ -0,0 +1,52 @@
+package utils
+
+import (
+    "encoding/base64"
+	"crypto/aes"
+	"crypto/cipher"
+	"fmt"
+)
+
+// DecodeWeAppUserInfo 解密微信小程序用户信息
+func DecodeWeAppUserInfo(encryptedData string, sessionKey string, iv string) (string, error) {
+	cipher, err := base64.StdEncoding.DecodeString(encryptedData)
+	if err != nil {
+		fmt.Println("encryptedData: ", encryptedData, "\n", err.Error())
+		return "", err
+	}
+
+	key, keyErr := base64.StdEncoding.DecodeString(sessionKey)
+	if keyErr != nil {
+		fmt.Println("sessionKey: ", sessionKey, "\n", keyErr.Error())
+		return "", keyErr
+	}
+
+	theIV, ivErr := base64.StdEncoding.DecodeString(iv)
+	if ivErr != nil {
+		fmt.Println("iv: ", iv, "\n", ivErr.Error())
+		return "", ivErr
+	}
+
+	result, resultErr := AESDecrypt(cipher, key, theIV)
+	resultStr := string(result)
+	fmt.Println(resultStr)
+	return string(result), resultErr
+}
+
+func AESDecrypt(ciphertext, key, iv []byte) ([]byte, error) {
+   block, err := aes.NewCipher(key) //选择加密算法
+   if err != nil {
+      return nil, err
+   }
+   blockModel := cipher.NewCBCDecrypter(block, iv)
+   plantText := make([]byte, len(ciphertext))
+   blockModel.CryptBlocks(plantText, ciphertext)
+   plantText = PKCS7UnPadding(plantText, block.BlockSize())
+   return plantText, nil
+}
+
+func PKCS7UnPadding(plantText []byte, blockSize int) []byte {
+   length := len(plantText)
+   unpadding := int(plantText[length-1])
+   return plantText[:(length - unpadding)]
+}
diff --git a/wexin/app.js b/wexin/app.js
@@ -1,49 +1,14 @@
 var config = require('./config/config.js');
-
-var userInfoCallbacks = [];
+var login  = require('./common/login.js');
 
 App({
     onLaunch: function() {
-        var self = this;
-        wx.login({
-            success: function(res) {
-                console.log(res);
-
-                if (res.code) {
-                    wx.request({
-                        url: config.api.weappLogin,
-                        data: {
-                            code: res.code
-                        },
-                        success: function(res) {
-                            try {
-                                wx.setStorageSync(config.wemallSession, res.data.data.sid);
-                            } catch (err) {
-                                console.log(err);
-                            }
-                        }
-                    });
-
-                    wx.getUserInfo({
-                        success: function(res) {
-                            for (var i = 0; i < userInfoCallbacks.length; i++) {
-                                userInfoCallbacks[i](res.userInfo);
-                            }
-                            userInfoCallbacks = [];
-                            self.globalData.userInfo = res.userInfo;
-                        },
-                        fail: function(data) {
-                            console.log(data);
-                        }
-                    });
-                }
-            }
-        });
-    },
-    addUserInfoCallback: function(callback) {
-        userInfoCallbacks.push(callback);
+        login.login();
     },
     globalData: {
-        userInfo: null    
+        userInfo: null,
+        encryptedData: "",
+        iv: "",
+        sid: ""
     }
 })
diff --git a/wexin/common/login.js b/wexin/common/login.js
@@ -0,0 +1,71 @@
+var login = {
+    loginResponders: [],
+    addLoginResponder: function(responder) {
+        this.loginResponders.push(responder);
+    },
+    login: function() {
+        var self    = this;
+        var resData = {};
+        var app     = App();
+
+        function setUserInfo() {
+            wx.request({
+                url: config.api.setWeAppUser,
+                data: {
+                    encryptedData : resData.encryptedData,
+                    iv            : resData.iv
+                },
+                header: {
+                    'content-type' : 'application/json',
+                    'Cookie'       : resData.sid
+                },
+                success: function(res) {
+                    app.globalData.userInfo      = resData.userInfo;
+                    app.globalData.encryptedData = resData.encryptedData;
+                    app.globalData.iv            = resData.iv;
+                    app.globalData.sid           = resData.sid;
+                    for (var i = 0; i < self.loginResponders.length; i++) {
+                        self.loginResponders[i]();
+                    }
+                }
+            });
+        }
+
+        wx.login({
+            success: function(res) {
+                if (res.code) {
+                    wx.request({
+                        url: config.api.weappLogin,
+                        data: {
+                            code: res.code
+                        },
+                        success: function(res) {
+                            resData.sid = res.data.data.sid;
+                            jsCodeDone = true;
+                            jsCodeDone && userInfoDone && setUserInfo();
+                        }
+                    });
+
+                    wx.getUserInfo({
+                        success: function(res) {
+                            resData.userInfo      = res.userInfo;
+                            resData.encryptedData = res.encryptedData;
+                            resData.iv            = res.iv;
+                            userInfoDone          = true;
+                            jsCodeDone && userInfoDone && setUserInfo();
+                        },
+                        fail: function(data) {
+                            console.log(data);
+                        }
+                    });
+                }
+            }
+        });
+    },
+
+    logout: function() {
+
+    }
+}
+
+module.exports = login;
diff --git a/wexin/config/config.js b/wexin/config/config.js
@@ -10,7 +10,8 @@ var config = {
         weappLogin: '/weappLogin',
         reqCategoryList: '/categories',
         reqProductList: '/products',
-        reqProductDetail: '/product/:id'
+        reqProductDetail: '/product/:id',
+        addToCart: '/cart/create'
     }
 };
 

diff --git a/wexin/pages/mine/mine.js b/wexin/pages/mine/mine.js
@@ -1,3 +1,5 @@
+var login = require('../../common/login.js');
+
 Page({
     data: {
         userInfo: null
@@ -11,7 +13,7 @@ Page({
         var app = getApp();
         var userInfo = app.globalData.userInfo;
         if (!userInfo) {
-            app.addUserInfoCallback(this.onUserInfoCallback.bind(this));
+            login.addLoginResponder(this.onUserInfoCallback.bind(this));
         } else {
             this.setData({
                 userInfo: userInfo

diff --git a/wexin/pages/product/product.wxml b/wexin/pages/product/product.wxml
@@ -54,7 +54,7 @@
             </view>
             <text class="cart-text">购物车</text>
         </view>
-        <view class="tabbar-item tabbar-add-cart"><text>加入购物车</text></view>
+        <view bindtap="onAddToCartTap" class="tabbar-item tabbar-add-cart"><text>加入购物车</text></view>
         <view class="tabbar-item tabbar-buy-now"><text>立即购买</text></view>
     </view>
 </view>