From 3163f425971012ea2bcfa0eb604fd2bf64c5a05e Mon Sep 17 00:00:00 2001
From: withchao <993506633@qq.com>
Date: Thu, 13 Jul 2023 19:26:17 +0800
Subject: [PATCH] fix: rpc mw mismatch key

---
 pkg/common/mw/check.go                  | 80 -------------------------
 pkg/common/mw/check_test.go             | 41 -------------
 pkg/common/mw/rpc_client_interceptor.go |  2 -
 pkg/common/mw/rpc_server_interceptor.go |  7 ---
 4 files changed, 130 deletions(-)
 delete mode 100644 pkg/common/mw/check.go
 delete mode 100644 pkg/common/mw/check_test.go

diff --git a/pkg/common/mw/check.go b/pkg/common/mw/check.go
deleted file mode 100644
index 81ea7e017..000000000
--- a/pkg/common/mw/check.go
+++ /dev/null
@@ -1,80 +0,0 @@
-// Copyright © 2023 OpenIM. All rights reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package mw
-
-import (
-	"crypto/aes"
-	"crypto/cipher"
-	"crypto/md5"
-	"encoding/base64"
-	"errors"
-	"fmt"
-	"math/rand"
-	"strings"
-	"sync"
-	"time"
-
-	"github.com/OpenIMSDK/Open-IM-Server/pkg/common/config"
-)
-
-var (
-	once  sync.Once
-	block cipher.Block
-)
-
-func init() {
-	rand.Seed(time.Now().UnixNano())
-}
-
-func initAesKey() {
-	once.Do(func() {
-		key := md5.Sum([]byte("openim:" + config.Config.Secret))
-		var err error
-		block, err = aes.NewCipher(key[:])
-		if err != nil {
-			panic(err)
-		}
-	})
-}
-
-func genReqKey(args []string) string {
-	initAesKey()
-	plaintext := md5.Sum([]byte(strings.Join(args, ":")))
-	iv := make([]byte, aes.BlockSize, aes.BlockSize+md5.Size)
-	if _, err := rand.Read(iv); err != nil {
-		panic(err)
-	}
-	ciphertext := make([]byte, md5.Size)
-	cipher.NewCBCEncrypter(block, iv).CryptBlocks(ciphertext, plaintext[:])
-	return base64.StdEncoding.EncodeToString(append(iv, ciphertext...))
-}
-
-func verifyReqKey(args []string, key string) error {
-	initAesKey()
-	k, err := base64.StdEncoding.DecodeString(key)
-	if err != nil {
-		return fmt.Errorf("invalid key %v", err)
-	}
-	if len(k) != aes.BlockSize+md5.Size {
-		return errors.New("invalid key")
-	}
-	plaintext := make([]byte, md5.Size)
-	cipher.NewCBCDecrypter(block, k[:aes.BlockSize]).CryptBlocks(plaintext, k[aes.BlockSize:])
-	sum := md5.Sum([]byte(strings.Join(args, ":")))
-	if string(plaintext) != string(sum[:]) {
-		return errors.New("mismatch key")
-	}
-	return nil
-}
diff --git a/pkg/common/mw/check_test.go b/pkg/common/mw/check_test.go
deleted file mode 100644
index b893d7e4e..000000000
--- a/pkg/common/mw/check_test.go
+++ /dev/null
@@ -1,41 +0,0 @@
-// Copyright © 2023 OpenIM. All rights reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package mw
-
-import (
-	"fmt"
-	"testing"
-)
-
-func TestCheck(t *testing.T) {
-	// config.Config.TokenPolicy.Secret = "123456"
-
-	args := []string{"1", "2", "3"}
-
-	key := genReqKey(args)
-	fmt.Println("key:", key)
-	err := verifyReqKey(args, key)
-
-	fmt.Println(err)
-
-	args = []string{"4", "5", "6"}
-
-	key = genReqKey(args)
-	fmt.Println("key:", key)
-	err = verifyReqKey(args, key)
-
-	fmt.Println(err)
-
-}
diff --git a/pkg/common/mw/rpc_client_interceptor.go b/pkg/common/mw/rpc_client_interceptor.go
index ebfcda99d..91a166c32 100644
--- a/pkg/common/mw/rpc_client_interceptor.go
+++ b/pkg/common/mw/rpc_client_interceptor.go
@@ -75,7 +75,6 @@ func RpcClientInterceptor(
 }
 
 func getRpcContext(ctx context.Context, method string) (context.Context, error) {
-	// ctx, _ = context.WithTimeout(ctx, time.Second*5)
 	md := metadata.Pairs()
 	if keys, _ := ctx.Value(constant.RpcCustomHeader).([]string); len(keys) > 0 {
 		for _, key := range keys {
@@ -111,6 +110,5 @@ func getRpcContext(ctx context.Context, method string) (context.Context, error)
 	if ok {
 		md.Set(constant.ConnID, connID)
 	}
-	md.Set(constant.CheckKey, genReqKey(checkArgs))
 	return metadata.NewOutgoingContext(ctx, md), nil
 }
diff --git a/pkg/common/mw/rpc_server_interceptor.go b/pkg/common/mw/rpc_server_interceptor.go
index da99275fd..ec43069da 100644
--- a/pkg/common/mw/rpc_server_interceptor.go
+++ b/pkg/common/mw/rpc_server_interceptor.go
@@ -106,13 +106,6 @@ func RpcServerInterceptor(
 	if opts := md.Get(constant.ConnID); len(opts) == 1 {
 		ctx = context.WithValue(ctx, constant.ConnID, opts[0])
 	}
-	if opts := md.Get(constant.CheckKey); len(opts) != 1 || opts[0] == "" {
-		return nil, status.New(codes.InvalidArgument, "check key empty").Err()
-	} else {
-		if err := verifyReqKey(args, opts[0]); err != nil {
-			return nil, status.New(codes.InvalidArgument, err.Error()).Err()
-		}
-	}
 	log.ZInfo(ctx, "rpc server req", "funcName", funcName, "req", rpcString(req))
 	resp, err = func() (interface{}, error) {
 		if err := checker.Validate(req); err != nil {