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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_ASH_SYSTEM_LOGS_DEBUG_DAEMON_LOG_SOURCE_H_
#define CHROME_BROWSER_ASH_SYSTEM_LOGS_DEBUG_DAEMON_LOG_SOURCE_H_
#include <map>
#include <memory>
#include <optional>
#include <string>
#include <vector>
#include "base/files/file_path.h"
#include "base/memory/weak_ptr.h"
#include "base/time/time.h"
#include "components/feedback/system_logs/system_logs_source.h"
namespace system_logs {
// Reads the file at |path| into |contents| and returns true on success and
// false on error. For security reasons a |path| containing path traversal
// components ('..') is treated as a read error and |contents| is not changed.
// When the file exceeds |max_size| function returns true with the last
// |max_size| bytes from the file.
bool ReadEndOfFile(const base::FilePath& path,
std::string* contents,
size_t max_size);
// Exposes the utility methods only for unittests.
#if defined(UNIT_TEST)
std::string ReadUserLogFile(const base::FilePath& log_file_path);
std::string ReadUserLogFilePattern(const base::FilePath& log_file_path_pattern);
#endif // defined(UNIT_TEST)
// Gathers log data from Debug Daemon.
class DebugDaemonLogSource : public SystemLogsSource {
public:
explicit DebugDaemonLogSource(bool scrub);
DebugDaemonLogSource(const DebugDaemonLogSource&) = delete;
DebugDaemonLogSource& operator=(const DebugDaemonLogSource&) = delete;
~DebugDaemonLogSource() override;
// SystemLogsSource override:
// Fetches logs from the daemon over dbus. After the fetch is complete, the
// results will be forwarded to the request supplied to the constructor and
// this instance will free itself.
void Fetch(SysLogsSourceCallback callback) override;
private:
typedef std::map<std::string, std::string> KeyValueMap;
// Callbacks for the dbus calls to debugd.
void OnGetRoutes(bool is_ipv6,
std::optional<std::vector<std::string>> routes);
void OnGetOneLog(std::string key, std::optional<std::string> status);
void OnGetLogs(const base::TimeTicks get_start_time,
bool succeeded,
const KeyValueMap& logs);
// Reads the logged-in users' log files that have to be read by Chrome as
// debugd has no access to them. The contents of these logs are appended to
// |response_|. This is called at the end when all debugd logs are collected
// so that we can see any debugd related errors surface in feedback reports.
void GetLoggedInUsersLogFiles();
void OnGetUserLogFiles(bool succeeded,
const KeyValueMap& logs);
// Merge the responses from ReadUserLogFiles into the main response dict and
// invoke the callback_.Run method with the assumption that all other logs
// have already been collected.
void MergeUserLogFilesResponse(std::unique_ptr<SystemLogsResponse> response);
// When all the requests are completed, send one last request to collect the
// user logs and complete the collection by invoking the callback's Run
// method.
void RequestCompleted();
std::unique_ptr<SystemLogsResponse> response_;
SysLogsSourceCallback callback_;
int num_pending_requests_;
bool scrub_;
base::WeakPtrFactory<DebugDaemonLogSource> weak_ptr_factory_{this};
};
} // namespace system_logs
#endif // CHROME_BROWSER_ASH_SYSTEM_LOGS_DEBUG_DAEMON_LOG_SOURCE_H_
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