1 /*
2 * Copyright (C) 2021 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15 #include "binder_catcher.h"
16
17 #include <fstream>
18
19 #include "securec.h"
20
21 #include "common_utils.h"
22 #include "defines.h"
23 #include "parameter_ex.h"
24
25 namespace OHOS {
26 namespace HiviewDFX {
27 #ifdef BINDER_CATCHER_ENABLE
28 using namespace OHOS::HiviewDFX::CommonUtils;
BinderCatcher()29 BinderCatcher::BinderCatcher() : EventLogCatcher()
30 {
31 name_ = "BinderCatcher";
32 }
33
Initialize(const std::string & strParam1,int intParam1,int intParam2)34 bool BinderCatcher::Initialize(const std::string& strParam1, int intParam1, int intParam2)
35 {
36 // this catcher do not need parameters, just return true
37 description_ = "BinderCatcher --\n";
38 return true;
39 };
40
Catch(int fd,int jsonFd)41 int BinderCatcher::Catch(int fd, int jsonFd)
42 {
43 int originSize = GetFdSize(fd);
44 if (Parameter::IsOversea()) {
45 FileUtil::SaveStringToFd(fd, "binder info is not saved in oversea version\n");
46 } else {
47 std::string line;
48 std::ifstream fin;
49 fin.open("/proc/transaction_proc");
50 if (!fin.is_open()) {
51 std::string content = "open binder file failed :/proc/transaction_proc\r\n";
52 FileUtil::SaveStringToFd(fd, content);
53 } else {
54 while (getline(fin, line)) {
55 FileUtil::SaveStringToFd(fd, line + "\n");
56 }
57 fin.close();
58 }
59 }
60
61 logSize_ = GetFdSize(fd) - originSize;
62 if (logSize_ <= 0) {
63 FileUtil::SaveStringToFd(fd, "binder content is empty!");
64 }
65 return logSize_;
66 };
67 #endif // BINDER_CATCHER_ENABLE
68 } // namespace HiviewDFX
69 } // namespace OHOS
70