123 lines
4.0 KiB
C++
123 lines
4.0 KiB
C++
/*
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* Copyright 2022, The Android Open Source 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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#include <sys/epoll.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <array>
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#include <set>
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#include <string>
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#include <android/os/DropBoxManager.h>
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#include <android-base/file.h>
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#include <android-base/logging.h>
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#include <android-base/properties.h>
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#include <android-base/strings.h>
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#include "dmesg_parser.h"
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// If there are too many reports, the device is horribly broken.
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const unsigned int kMaxReports = 10;
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const char kSentPath[] = "/data/misc/dmesgd/sent_reports.txt";
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static std::set<std::string> ReadSentReports() {
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std::set<std::string> ret;
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std::string content;
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if (!android::base::ReadFileToString(kSentPath, &content)) {
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PLOG(ERROR) << kSentPath << " is empty";
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return ret;
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}
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auto lines = android::base::Split(content, "\n");
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for (auto line : lines) {
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ret.insert(line);
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}
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LOG(ERROR) << "Read " << ret.size() << " records from " << kSentPath;
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return ret;
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}
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static void WriteSentReports(std::set<std::string> reports) {
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if (!android::base::WriteStringToFile(android::base::Join(reports, ""), kSentPath)) {
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PLOG(ERROR) << "Failed to write to " << kSentPath;
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}
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}
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const char kUnknown[] = "UNKNOWN";
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static std::string GetOneBootHeader(const std::string& pretty, const std::string& pname) {
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return pretty + ": " + android::base::GetProperty(pname, kUnknown) + "\n";
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};
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static std::string GetBootHeaders() {
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std::string ret = GetOneBootHeader("Build", "ro.build.fingerprint");
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ret += GetOneBootHeader("Hardware", "ro.product.board");
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ret += GetOneBootHeader("Revision", "ro.revision");
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ret += GetOneBootHeader("Bootloader", "ro.bootloader");
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ret += GetOneBootHeader("Radio", "gsm.version.baseband");
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std::string version;
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if (!android::base::ReadFileToString("/proc/version", &version)) version = kUnknown;
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ret += "Kernel: " + version + "\n\n";
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return ret;
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}
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static bool StoreReport(const std::string& tag, const std::string& report) {
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std::string boot_headers = GetBootHeaders();
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android::sp<android::os::DropBoxManager> dropbox(new android::os::DropBoxManager());
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auto status = dropbox->addText(android::String16(tag.c_str()), boot_headers + report);
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if (!status.isOk()) {
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LOG(ERROR) << "Dropbox failed";
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return false;
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}
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return true;
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}
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static int ProcessDmesg(std::set<std::string> &sent_reports) {
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std::unique_ptr<FILE, decltype(&pclose)> pipe(popen("dmesg", "r"), pclose);
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if (!pipe) {
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PLOG(ERROR) << "popen() failed!";
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return 1;
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}
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dmesg_parser::DmesgParser dmesg_parser;
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char* buffer = NULL;
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size_t buffer_size = 0;
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while (getline(&buffer, &buffer_size, pipe.get()) != -1) {
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std::string line(buffer);
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if (line.back() != '\n') line += "\n";
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dmesg_parser.ProcessLine(line);
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if (dmesg_parser.ReportReady()) {
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std::string tag = "SYSTEM_" + dmesg_parser.ReportType() + "_ERROR_REPORT";
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std::string title = dmesg_parser.ReportTitle();
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if ((sent_reports.find(title) == sent_reports.end()) &&
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(sent_reports.size() < kMaxReports)) {
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if (StoreReport(tag, dmesg_parser.FlushReport())) sent_reports.insert(title);
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}
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}
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}
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free(buffer);
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return 0;
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}
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int main(int, char*[]) {
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auto sent_reports = ReadSentReports();
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int result = ProcessDmesg(sent_reports);
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WriteSentReports(sent_reports);
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return result;
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}
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