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/**
* Copyright (c) 2016, 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.
*/
#define LOG_TAG "dumpstate"
#include "DumpstateService.h"
#include <memory>
#include <android-base/stringprintf.h>
#include "android/os/BnDumpstate.h"
#include "DumpstateInternal.h"
using android::base::StringPrintf;
namespace android {
namespace os {
namespace {
struct DumpstateInfo {
public:
Dumpstate* ds = nullptr;
int32_t calling_uid = -1;
std::string calling_package;
};
static binder::Status exception(uint32_t code, const std::string& msg,
const std::string& extra_msg = "") {
if (extra_msg.empty()) {
MYLOGE("%s (%d) ", msg.c_str(), code);
} else {
MYLOGE("%s %s (%d) ", msg.c_str(), extra_msg.c_str(), code);
}
return binder::Status::fromExceptionCode(code, String8(msg.c_str()));
}
// Creates a bugreport and exits, thus preserving the oneshot nature of the service.
// Note: takes ownership of data.
[[noreturn]] static void* dumpstate_thread_main(void* data) {
std::unique_ptr<DumpstateInfo> ds_info(static_cast<DumpstateInfo*>(data));
ds_info->ds->Run(ds_info->calling_uid, ds_info->calling_package);
MYLOGD("Finished taking a bugreport. Exiting.\n");
exit(0);
}
[[noreturn]] static void signalErrorAndExit(sp<IDumpstateListener> listener, int error_code) {
listener->onError(error_code);
exit(0);
}
} // namespace
DumpstateService::DumpstateService() : ds_(nullptr), calling_uid_(-1), calling_package_() {
}
char const* DumpstateService::getServiceName() {
return "dumpstate";
}
status_t DumpstateService::Start() {
IPCThreadState::self()->disableBackgroundScheduling(true);
status_t ret = BinderService<DumpstateService>::publish();
if (ret != android::OK) {
return ret;
}
sp<ProcessState> ps(ProcessState::self());
ps->startThreadPool();
ps->giveThreadPoolName();
return android::OK;
}
binder::Status DumpstateService::startBugreport(int32_t calling_uid,
const std::string& calling_package,
android::base::unique_fd bugreport_fd,
android::base::unique_fd screenshot_fd,
int bugreport_mode,
const sp<IDumpstateListener>& listener,
bool is_screenshot_requested) {
MYLOGI("startBugreport() with mode: %d\n", bugreport_mode);
// Ensure there is only one bugreport in progress at a time.
std::lock_guard<std::mutex> lock(lock_);
if (ds_ != nullptr) {
MYLOGE("Error! There is already a bugreport in progress. Returning.");
if (listener != nullptr) {
listener->onError(IDumpstateListener::BUGREPORT_ERROR_ANOTHER_REPORT_IN_PROGRESS);
}
return exception(binder::Status::EX_SERVICE_SPECIFIC,
"There is already a bugreport in progress");
}
// From here on, all conditions that indicate we are done with this incoming request should
// result in exiting the service to free it up for next invocation.
if (listener == nullptr) {
MYLOGE("Invalid input: no listener");
exit(0);
}
if (bugreport_mode != Dumpstate::BugreportMode::BUGREPORT_FULL &&
bugreport_mode != Dumpstate::BugreportMode::BUGREPORT_INTERACTIVE &&
bugreport_mode != Dumpstate::BugreportMode::BUGREPORT_REMOTE &&
bugreport_mode != Dumpstate::BugreportMode::BUGREPORT_WEAR &&
bugreport_mode != Dumpstate::BugreportMode::BUGREPORT_TELEPHONY &&
bugreport_mode != Dumpstate::BugreportMode::BUGREPORT_WIFI &&
bugreport_mode != Dumpstate::BugreportMode::BUGREPORT_DEFAULT) {
MYLOGE("Invalid input: bad bugreport mode: %d", bugreport_mode);
signalErrorAndExit(listener, IDumpstateListener::BUGREPORT_ERROR_INVALID_INPUT);
}
std::unique_ptr<Dumpstate::DumpOptions> options = std::make_unique<Dumpstate::DumpOptions>();
options->Initialize(static_cast<Dumpstate::BugreportMode>(bugreport_mode), bugreport_fd,
screenshot_fd, is_screenshot_requested);
if (bugreport_fd.get() == -1 || (options->do_screenshot && screenshot_fd.get() == -1)) {
MYLOGE("Invalid filedescriptor");
signalErrorAndExit(listener, IDumpstateListener::BUGREPORT_ERROR_INVALID_INPUT);
}
ds_ = &(Dumpstate::GetInstance());
ds_->SetOptions(std::move(options));
ds_->listener_ = listener;
// Track caller info for cancellation purposes.
calling_uid_ = calling_uid;
calling_package_ = calling_package;
DumpstateInfo* ds_info = new DumpstateInfo();
ds_info->ds = ds_;
ds_info->calling_uid = calling_uid;
ds_info->calling_package = calling_package;
pthread_t thread;
// Initialize dumpstate
ds_->Initialize();
status_t err = pthread_create(&thread, nullptr, dumpstate_thread_main, ds_info);
if (err != 0) {
delete ds_info;
ds_info = nullptr;
MYLOGE("Could not create a thread");
signalErrorAndExit(listener, IDumpstateListener::BUGREPORT_ERROR_RUNTIME_ERROR);
}
return binder::Status::ok();
}
binder::Status DumpstateService::cancelBugreport(int32_t calling_uid,
const std::string& calling_package) {
std::lock_guard<std::mutex> lock(lock_);
if (calling_uid != calling_uid_ || calling_package != calling_package_) {
// Note: we use a SecurityException to prevent BugreportManagerServiceImpl from killing the
// report in progress (from another caller).
return exception(
binder::Status::EX_SECURITY,
StringPrintf("Cancellation requested by %d/%s does not match report in "
"progress",
calling_uid, calling_package.c_str()),
// Sharing the owner of the BR is a (minor) leak, so leave it out of the app's exception
StringPrintf("started by %d/%s", calling_uid_, calling_package_.c_str()));
}
ds_->Cancel();
return binder::Status::ok();
}
status_t DumpstateService::dump(int fd, const Vector<String16>&) {
std::lock_guard<std::mutex> lock(lock_);
if (ds_ == nullptr) {
dprintf(fd, "Bugreport not in progress yet");
return NO_ERROR;
}
std::string destination = ds_->options_->bugreport_fd.get() != -1
? StringPrintf("[fd:%d]", ds_->options_->bugreport_fd.get())
: ds_->bugreport_internal_dir_.c_str();
dprintf(fd, "id: %d\n", ds_->id_);
dprintf(fd, "pid: %d\n", ds_->pid_);
dprintf(fd, "update_progress: %s\n", ds_->options_->do_progress_updates ? "true" : "false");
dprintf(fd, "last_percent_progress: %d\n", ds_->last_reported_percent_progress_);
dprintf(fd, "progress:\n");
ds_->progress_->Dump(fd, " ");
dprintf(fd, "args: %s\n", ds_->options_->args.c_str());
dprintf(fd, "bugreport_mode: %s\n", ds_->options_->bugreport_mode_string.c_str());
dprintf(fd, "version: %s\n", ds_->version_.c_str());
dprintf(fd, "bugreport_dir: %s\n", destination.c_str());
dprintf(fd, "screenshot_path: %s\n", ds_->screenshot_path_.c_str());
dprintf(fd, "log_path: %s\n", ds_->log_path_.c_str());
dprintf(fd, "tmp_path: %s\n", ds_->tmp_path_.c_str());
dprintf(fd, "path: %s\n", ds_->path_.c_str());
dprintf(fd, "base_name: %s\n", ds_->base_name_.c_str());
dprintf(fd, "name: %s\n", ds_->name_.c_str());
dprintf(fd, "now: %ld\n", ds_->now_);
dprintf(fd, "notification title: %s\n", ds_->options_->notification_title.c_str());
dprintf(fd, "notification description: %s\n", ds_->options_->notification_description.c_str());
return NO_ERROR;
}
} // namespace os
} // namespace android
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