添加企业微信解密方式

utils/weworkapi_golang-master/httpserver.go

@@ -0,0 +1,115 @@
+package weworkapi_golang
+
+import (
+	"encoding/json"
+	"fmt"
+	"io/ioutil"
+	"log"
+	"net/http"
+	"net/url"
+	"strings"
+)
+
+const token = "nn3P9sfkGK5UlHgtNoAqB"
+const receiverId = "ww9a156bfa070e1857"
+const encodingAeskey = "471RkJkfISWJQUC2f8DSdOgXH0reVCxWCpfaTawSIWA"
+
+func getString(str, endstr string, start int, msg *string) int {
+	end := strings.Index(str, endstr)
+	*msg = str[start:end]
+	return end + len(endstr)
+}
+
+func VerifyURL(w http.ResponseWriter, r *http.Request) {
+	//httpstr := `&{GET /?msg_signature=825075c093249d5a60967fe4a613cae93146636b&timestamp=1597998748&nonce=1597483820&echostr=neLB8CftccHiz19tluVb%2BUBnUVMT3xpUMZU8qvDdD17eH8XfEsbPYC%2FkJyPsZOOc6GdsCeu8jSIa2noSJ%2Fez2w%3D%3D HTTP/1.1 1 1 map[Cache-Control:[no-cache] Accept:[*/*] Pragma:[no-cache] User-Agent:[Mozilla/4.0]] 0x86c180 0 [] false 100.108.211.112:8893 map[] map[] <nil> map[] 100.108.79.233:59663 /?msg_signature=825075c093249d5a60967fe4a613cae93146636b&timestamp=1597998748&nonce=1597483820&echostr=neLB8CftccHiz19tluVb%2BUBnUVMT3xpUMZU8qvDdD17eH8XfEsbPYC%2FkJyPsZOOc6GdsCeu8jSIa2noSJ%2Fez2w%3D%3D <nil>}`
+	fmt.Println(r, r.Body)
+	httpstr := r.URL.RawQuery
+	start := strings.Index(httpstr, "msg_signature=")
+	start += len("msg_signature=")
+
+	var msg_signature string
+	next := getString(httpstr, "&timestamp=", start, &msg_signature)
+
+	var timestamp string
+	next = getString(httpstr, "&nonce=", next, &timestamp)
+
+	var nonce string
+	next = getString(httpstr, "&echostr=", next, &nonce)
+
+	echostr := httpstr[next:len(httpstr)]
+
+	echostr, _ = url.QueryUnescape(echostr)
+	fmt.Println(msg_signature, timestamp, nonce, echostr, next)
+
+	wxcpt := NewWXBizMsgCrypt(token, encodingAeskey, receiverId, JsonType)
+	echoStr, cryptErr := wxcpt.VerifyURL(msg_signature, timestamp, nonce, echostr)
+	if nil != cryptErr {
+		fmt.Println("verifyUrl fail", cryptErr)
+	}
+	fmt.Println("verifyUrl success echoStr", string(echoStr))
+	fmt.Fprintf(w, string(echoStr))
+
+}
+
+func MsgHandler(w http.ResponseWriter, r *http.Request) {
+	httpstr := r.URL.RawQuery
+	start := strings.Index(httpstr, "msg_signature=")
+	start += len("msg_signature=")
+
+	var msg_signature string
+	next := getString(httpstr, "&timestamp=", start, &msg_signature)
+
+	var timestamp string
+	next = getString(httpstr, "&nonce=", next, &timestamp)
+
+	nonce := httpstr[next:len(httpstr)]
+	fmt.Println(msg_signature, timestamp, nonce)
+
+	body, err := ioutil.ReadAll(r.Body)
+	fmt.Println(string(body), err)
+	wxcpt := NewWXBizMsgCrypt(token, encodingAeskey, receiverId, JsonType)
+
+	msg, err_ := wxcpt.DecryptMsg(msg_signature, timestamp, nonce, body)
+	fmt.Println(string(msg), err_)
+	var msgContent MsgContent
+	err = json.Unmarshal(msg, &msgContent)
+	if nil != err {
+		fmt.Println("Unmarshal fail", err)
+	} else {
+		fmt.Println("struct", msgContent)
+	}
+
+	fmt.Println(msgContent, err)
+	ToUsername := msgContent.ToUsername
+	msgContent.ToUsername = msgContent.FromUsername
+	msgContent.FromUsername = ToUsername
+	fmt.Println("replaymsg", msgContent)
+	replayJson, err := json.Marshal(&msgContent)
+
+	encryptMsg, cryptErr := wxcpt.EncryptMsg(string(replayJson), "1409659589", "1409659589")
+	if nil != cryptErr {
+		fmt.Println("DecryptMsg fail", cryptErr)
+	}
+
+	sEncryptMsg := string(encryptMsg)
+
+	fmt.Println("after encrypt sEncryptMsg: ", sEncryptMsg)
+	fmt.Fprintf(w, sEncryptMsg)
+}
+
+func CallbackHandler(w http.ResponseWriter, r *http.Request) {
+	httpstr := r.URL.RawQuery
+	echo := strings.Index(httpstr, "echostr")
+	if echo != -1 {
+		VerifyURL(w, r)
+	} else {
+		MsgHandler(w, r)
+	}
+
+	fmt.Println("finished CallbackHandler", httpstr)
+}
+
+func main() {
+	http.HandleFunc("/", CallbackHandler) //      设置访问路由
+	log.Fatal(http.ListenAndServe(":8893", nil))
+}