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// Copyright (c) 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/net/net_log_temp_file.h"
#include "base/files/file_util.h"
#include "base/files/scoped_file.h"
#include "base/values.h"
#include "chrome/browser/net/chrome_net_log.h"
#include "chrome/browser/ui/webui/net_internals/net_internals_ui.h"
#include "content/public/browser/browser_thread.h"
#include "net/log/write_to_file_net_log_observer.h"
using content::BrowserThread;
// Path of logs relative to base::GetTempDir(). Must be kept in sync
// with chrome/android/java/res/xml/file_paths.xml
base::FilePath::CharType kLogRelativePath[] =
FILE_PATH_LITERAL("net-export/chrome-net-export-log.json");
// Old path used by net-export. Used to delete old files.
// TODO(mmenke): Should remove at some point. Added in M46.
base::FilePath::CharType kOldLogRelativePath[] =
FILE_PATH_LITERAL("chrome-net-export-log.json");
NetLogTempFile::~NetLogTempFile() {
if (write_to_file_observer_)
write_to_file_observer_->StopObserving(nullptr);
}
void NetLogTempFile::ProcessCommand(Command command) {
DCHECK_CURRENTLY_ON(BrowserThread::FILE_USER_BLOCKING);
if (!EnsureInit())
return;
switch (command) {
case DO_START_LOG_BYTES:
StartNetLog(LOG_TYPE_LOG_BYTES);
break;
case DO_START:
StartNetLog(LOG_TYPE_NORMAL);
break;
case DO_START_STRIP_PRIVATE_DATA:
StartNetLog(LOG_TYPE_STRIP_PRIVATE_DATA);
break;
case DO_STOP:
StopNetLog();
break;
default:
NOTREACHED();
break;
}
}
bool NetLogTempFile::GetFilePath(base::FilePath* path) {
DCHECK_CURRENTLY_ON(BrowserThread::FILE_USER_BLOCKING);
if (log_type_ == LOG_TYPE_NONE || state_ == STATE_LOGGING)
return false;
if (!NetExportLogExists())
return false;
DCHECK(!log_path_.empty());
#if defined(OS_POSIX)
// Users, group and others can read, write and traverse.
int mode = base::FILE_PERMISSION_MASK;
base::SetPosixFilePermissions(log_path_, mode);
#endif // defined(OS_POSIX)
*path = log_path_;
return true;
}
base::DictionaryValue* NetLogTempFile::GetState() {
DCHECK_CURRENTLY_ON(BrowserThread::FILE_USER_BLOCKING);
base::DictionaryValue* dict = new base::DictionaryValue;
EnsureInit();
#ifndef NDEBUG
dict->SetString("file", log_path_.LossyDisplayName());
#endif // NDEBUG
switch (state_) {
case STATE_NOT_LOGGING:
dict->SetString("state", "NOT_LOGGING");
break;
case STATE_LOGGING:
dict->SetString("state", "LOGGING");
break;
case STATE_UNINITIALIZED:
dict->SetString("state", "UNINITIALIZED");
break;
}
switch (log_type_) {
case LOG_TYPE_NONE:
dict->SetString("logType", "NONE");
break;
case LOG_TYPE_UNKNOWN:
dict->SetString("logType", "UNKNOWN");
break;
case LOG_TYPE_LOG_BYTES:
dict->SetString("logType", "LOG_BYTES");
break;
case LOG_TYPE_NORMAL:
dict->SetString("logType", "NORMAL");
break;
case LOG_TYPE_STRIP_PRIVATE_DATA:
dict->SetString("logType", "STRIP_PRIVATE_DATA");
break;
}
return dict;
}
NetLogTempFile::NetLogTempFile(ChromeNetLog* chrome_net_log)
: state_(STATE_UNINITIALIZED),
log_type_(LOG_TYPE_NONE),
chrome_net_log_(chrome_net_log) {
}
bool NetLogTempFile::GetNetExportLogBaseDirectory(
base::FilePath* path) const {
DCHECK_CURRENTLY_ON(BrowserThread::FILE_USER_BLOCKING);
return base::GetTempDir(path);
}
net::NetLogCaptureMode NetLogTempFile::GetCaptureModeForLogType(
LogType log_type) {
switch (log_type) {
case LOG_TYPE_LOG_BYTES:
return net::NetLogCaptureMode::IncludeSocketBytes();
case LOG_TYPE_NORMAL:
return net::NetLogCaptureMode::IncludeCookiesAndCredentials();
case LOG_TYPE_STRIP_PRIVATE_DATA:
return net::NetLogCaptureMode::Default();
case LOG_TYPE_NONE:
case LOG_TYPE_UNKNOWN:
NOTREACHED();
}
return net::NetLogCaptureMode::Default();
}
bool NetLogTempFile::EnsureInit() {
DCHECK_CURRENTLY_ON(BrowserThread::FILE_USER_BLOCKING);
if (state_ != STATE_UNINITIALIZED)
return true;
if (!SetUpNetExportLogPath())
return false;
state_ = STATE_NOT_LOGGING;
if (NetExportLogExists())
log_type_ = LOG_TYPE_UNKNOWN;
else
log_type_ = LOG_TYPE_NONE;
return true;
}
void NetLogTempFile::StartNetLog(LogType log_type) {
DCHECK_CURRENTLY_ON(BrowserThread::FILE_USER_BLOCKING);
if (state_ == STATE_LOGGING)
return;
DCHECK_NE(STATE_UNINITIALIZED, state_);
DCHECK(!log_path_.empty());
// Try to make sure we can create the file.
// TODO(rtenneti): Find a better for doing the following. Surface some error
// to the user if we couldn't create the file.
base::ScopedFILE file(base::OpenFile(log_path_, "w"));
if (!file)
return;
log_type_ = log_type;
state_ = STATE_LOGGING;
scoped_ptr<base::Value> constants(NetInternalsUI::GetConstants());
write_to_file_observer_.reset(new net::WriteToFileNetLogObserver());
write_to_file_observer_->set_capture_mode(GetCaptureModeForLogType(log_type));
write_to_file_observer_->StartObserving(chrome_net_log_, file.Pass(),
constants.get(), nullptr);
}
void NetLogTempFile::StopNetLog() {
DCHECK_CURRENTLY_ON(BrowserThread::FILE_USER_BLOCKING);
if (state_ != STATE_LOGGING)
return;
write_to_file_observer_->StopObserving(nullptr);
write_to_file_observer_.reset();
state_ = STATE_NOT_LOGGING;
}
bool NetLogTempFile::SetUpNetExportLogPath() {
DCHECK_CURRENTLY_ON(BrowserThread::FILE_USER_BLOCKING);
base::FilePath temp_dir;
if (!GetNetExportLogBaseDirectory(&temp_dir))
return false;
// Delete log file at old location, if present.
DeleteFile(temp_dir.Append(kOldLogRelativePath), false);
base::FilePath log_path = temp_dir.Append(kLogRelativePath);
if (!base::CreateDirectoryAndGetError(log_path.DirName(),
nullptr)) {
return false;
}
log_path_ = log_path;
return true;
}
bool NetLogTempFile::NetExportLogExists() const {
DCHECK_CURRENTLY_ON(BrowserThread::FILE_USER_BLOCKING);
DCHECK(!log_path_.empty());
return base::PathExists(log_path_);
}
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