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/*
* Copyright (C) 2019 The Android Open Source Project
*
* 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.
*/
#pragma once
#include <android-base/stringprintf.h>
#include <json/value.h>
#include <json/writer.h>
#ifdef ANDROID_BINDER_STATUS_H
#define IS_BINDER_OK(__ex__) (__ex__ == ::android::binder::Status::EX_NONE)
#define EXCEPTION_TO_STRING(__ex__, str) \
case ::android::binder::Status::__ex__: \
return str;
#define TO_EXCEPTION(__ex__) __ex__;
#else
#define IS_BINDER_OK(__ex__) (AStatus_isOk(AStatus_fromExceptionCode(__ex__)))
#define EXCEPTION_TO_STRING(__ex__, str) \
case __ex__: \
return str;
#define TO_EXCEPTION(__ex__) AStatus_getExceptionCode(AStatus_fromExceptionCode(__ex__));
#endif
std::string exceptionToString(int32_t exception) {
switch (exception) {
EXCEPTION_TO_STRING(EX_SECURITY, "SecurityException")
EXCEPTION_TO_STRING(EX_BAD_PARCELABLE, "BadParcelableException")
EXCEPTION_TO_STRING(EX_ILLEGAL_ARGUMENT, "IllegalArgumentException")
EXCEPTION_TO_STRING(EX_NULL_POINTER, "NullPointerException")
EXCEPTION_TO_STRING(EX_ILLEGAL_STATE, "IllegalStateException")
EXCEPTION_TO_STRING(EX_NETWORK_MAIN_THREAD, "NetworkMainThreadException")
EXCEPTION_TO_STRING(EX_UNSUPPORTED_OPERATION, "UnsupportedOperationException")
EXCEPTION_TO_STRING(EX_SERVICE_SPECIFIC, "ServiceSpecificException")
EXCEPTION_TO_STRING(EX_PARCELABLE, "ParcelableException")
EXCEPTION_TO_STRING(EX_TRANSACTION_FAILED, "TransactionFailedException")
default:
return "UnknownException";
}
}
using LogFn = std::function<void(const std::string& msg)>;
void binderCallLogFn(const Json::Value& logTransaction, const LogFn& logFn) {
using namespace std::string_literals;
bool hasReturnArgs;
std::string output;
const Json::Value& returnArgs = logTransaction["_aidl_return"];
const Json::Value& inputArgsArray = logTransaction["input_args"];
hasReturnArgs = !returnArgs.empty();
output.append(logTransaction["method_name"].asString() + "("s);
// input args
Json::FastWriter fastWriter;
fastWriter.omitEndingLineFeed();
for (Json::Value::ArrayIndex i = 0; i < inputArgsArray.size(); ++i) {
std::string value = fastWriter.write(inputArgsArray[i]["value"]);
output.append(value);
if (i != inputArgsArray.size() - 1) {
output.append(", "s);
}
}
output.append(")"s);
const int exceptionCode =
TO_EXCEPTION(logTransaction["binder_status"]["exception_code"].asInt());
if (hasReturnArgs || !IS_BINDER_OK(exceptionCode)) {
output.append(" -> "s);
}
// return status
if (!IS_BINDER_OK(exceptionCode)) {
// an exception occurred
const int errCode = logTransaction["binder_status"]["service_specific_error_code"].asInt();
output.append(::android::base::StringPrintf(
"%s(%d, \"%s\")", exceptionToString(exceptionCode).c_str(),
(errCode != 0) ? errCode : exceptionCode,
logTransaction["binder_status"]["exception_message"].asString().c_str()));
}
// return args
if (hasReturnArgs) {
output.append(::android::base::StringPrintf("{%s}", fastWriter.write(returnArgs).c_str()));
}
// duration time
output.append(
::android::base::StringPrintf(" <%.2fms>", logTransaction["duration_ms"].asFloat()));
logFn(output);
}
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