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/*
* Copyright (C) 2020 The Android Open Sourete 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.
*/
#define LOG_TAG "trusty-fuzz-utils"
#include <trusty/fuzz/utils.h>
#include <android-base/logging.h>
#include <android-base/unique_fd.h>
#include <linux/ioctl.h>
#include <linux/types.h>
#include <linux/uio.h>
#include <log/log_read.h>
#include <time.h>
#include <trusty/tipc.h>
#include <iostream>
using android::base::ErrnoError;
using android::base::Error;
using android::base::Result;
using android::base::unique_fd;
namespace {
const size_t kTimeoutSeconds = 5;
const std::string kTrustyLogTag = "trusty-log";
const time_t kInitialTime = time(nullptr);
void PrintTrustyLog() {
auto logger_list = android_logger_list_open(LOG_ID_KERNEL, ANDROID_LOG_NONBLOCK, 1000, 0);
if (logger_list == nullptr) {
std::cerr << "Could not open android kernel log\n";
return;
}
while (true) {
log_msg log_msg;
int rc = android_logger_list_read(logger_list, &log_msg);
if (rc < 0) {
break;
}
if (log_msg.entry.sec < kInitialTime) {
continue;
}
char* msg = log_msg.msg();
if (msg) {
std::string line(msg, log_msg.entry.len);
if (line.find(kTrustyLogTag) != std::string::npos) {
std::cerr << line.substr(kTrustyLogTag.length() + 2) << std::endl;
}
}
}
android_logger_list_free(logger_list);
}
} // namespace
namespace android {
namespace trusty {
namespace fuzz {
TrustyApp::TrustyApp(std::string tipc_dev, std::string ta_port)
: tipc_dev_(tipc_dev), ta_port_(ta_port), ta_fd_(-1) {}
Result<void> TrustyApp::Connect() {
alarm(kTimeoutSeconds);
int fd = tipc_connect(tipc_dev_.c_str(), ta_port_.c_str());
alarm(0);
if (fd < 0) {
return ErrnoError() << "failed to open TIPC device: ";
}
ta_fd_.reset(fd);
return {};
}
Result<void> TrustyApp::Read(void* buf, size_t len) {
if (ta_fd_ == -1) {
return Error() << "TA is not connected to yet: ";
}
alarm(kTimeoutSeconds);
int rc = read(ta_fd_, buf, len);
alarm(0);
if (rc < 0) {
return Error() << "failed to read TIPC message from TA: ";
}
return {};
}
Result<void> TrustyApp::Write(const void* buf, size_t len) {
if (ta_fd_ == -1) {
return Error() << "TA is not connected to yet: ";
}
alarm(kTimeoutSeconds);
int rc = write(ta_fd_, buf, len);
alarm(0);
if (rc < 0) {
return Error() << "failed to write TIPC message to TA: ";
}
return {};
}
Result<int> TrustyApp::GetRawFd() {
if (ta_fd_ == -1) {
return Error() << "TA is not connected to yet: ";
}
return ta_fd_;
}
void TrustyApp::Disconnect() {
ta_fd_.reset();
}
void Abort() {
PrintTrustyLog();
exit(-1);
}
} // namespace fuzz
} // namespace trusty
} // namespace android
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