137 lines
3.3 KiB
C++
137 lines
3.3 KiB
C++
/*
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* Copyright (C) 2020 The Android Open Sourete Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#define LOG_TAG "trusty-fuzz-utils"
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#include <trusty/fuzz/utils.h>
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#include <android-base/logging.h>
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#include <android-base/unique_fd.h>
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#include <linux/ioctl.h>
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#include <linux/types.h>
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#include <linux/uio.h>
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#include <log/log_read.h>
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#include <time.h>
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#include <trusty/tipc.h>
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#include <iostream>
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using android::base::ErrnoError;
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using android::base::Error;
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using android::base::Result;
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using android::base::unique_fd;
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namespace {
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const size_t kTimeoutSeconds = 5;
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const std::string kTrustyLogTag = "trusty-log";
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const time_t kInitialTime = time(nullptr);
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void PrintTrustyLog() {
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auto logger_list = android_logger_list_open(LOG_ID_KERNEL, ANDROID_LOG_NONBLOCK, 1000, 0);
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if (logger_list == nullptr) {
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std::cerr << "Could not open android kernel log\n";
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return;
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}
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while (true) {
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log_msg log_msg;
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int rc = android_logger_list_read(logger_list, &log_msg);
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if (rc < 0) {
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break;
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}
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if (log_msg.entry.sec < kInitialTime) {
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continue;
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}
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char* msg = log_msg.msg();
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if (msg) {
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std::string line(msg, log_msg.entry.len);
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if (line.find(kTrustyLogTag) != std::string::npos) {
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std::cerr << line.substr(kTrustyLogTag.length() + 2) << std::endl;
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}
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}
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}
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android_logger_list_free(logger_list);
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}
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} // namespace
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namespace android {
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namespace trusty {
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namespace fuzz {
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TrustyApp::TrustyApp(std::string tipc_dev, std::string ta_port)
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: tipc_dev_(tipc_dev), ta_port_(ta_port), ta_fd_(-1) {}
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Result<void> TrustyApp::Connect() {
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alarm(kTimeoutSeconds);
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int fd = tipc_connect(tipc_dev_.c_str(), ta_port_.c_str());
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alarm(0);
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if (fd < 0) {
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return ErrnoError() << "failed to open TIPC device: ";
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}
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ta_fd_.reset(fd);
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return {};
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}
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Result<void> TrustyApp::Read(void* buf, size_t len) {
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if (ta_fd_ == -1) {
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return Error() << "TA is not connected to yet: ";
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}
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alarm(kTimeoutSeconds);
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int rc = read(ta_fd_, buf, len);
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alarm(0);
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if (rc < 0) {
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return Error() << "failed to read TIPC message from TA: ";
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}
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return {};
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}
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Result<void> TrustyApp::Write(const void* buf, size_t len) {
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if (ta_fd_ == -1) {
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return Error() << "TA is not connected to yet: ";
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}
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alarm(kTimeoutSeconds);
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int rc = write(ta_fd_, buf, len);
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alarm(0);
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if (rc < 0) {
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return Error() << "failed to read TIPC message from TA: ";
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}
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return {};
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}
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Result<int> TrustyApp::GetRawFd() {
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if (ta_fd_ == -1) {
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return Error() << "TA is not connected to yet: ";
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}
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return ta_fd_;
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}
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void Abort() {
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PrintTrustyLog();
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exit(-1);
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}
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} // namespace fuzz
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} // namespace trusty
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} // namespace android
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