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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/file_util.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/base/net_log_logger.h"
using content::BrowserThread;
NetLogTempFile::NetLogTempFile(ChromeNetLog* chrome_net_log)
: state_(STATE_UNINITIALIZED),
log_filename_(FILE_PATH_LITERAL("chrome-net-export-log.json")),
chrome_net_log_(chrome_net_log) {
}
NetLogTempFile::~NetLogTempFile() {
if (net_log_logger_)
net_log_logger_->StopObserving();
}
void NetLogTempFile::ProcessCommand(Command command) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE_USER_BLOCKING));
if (!EnsureInit())
return;
switch (command) {
case DO_START:
StartNetLog();
break;
case DO_STOP:
StopNetLog();
break;
default:
NOTREACHED();
break;
}
}
DictionaryValue* NetLogTempFile::GetState() {
DCHECK(BrowserThread::CurrentlyOn(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_ALLOW_START:
dict->SetString("state", "ALLOW_START");
break;
case STATE_ALLOW_STOP:
dict->SetString("state", "ALLOW_STOP");
break;
case STATE_ALLOW_START_SEND:
dict->SetString("state", "ALLOW_START_SEND");
break;
default:
dict->SetString("state", "UNINITIALIZED");
break;
}
return dict;
}
bool NetLogTempFile::EnsureInit() {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE_USER_BLOCKING));
if (state_ != STATE_UNINITIALIZED)
return true;
if (!GetNetExportLog())
return false;
if (NetExportLogExists())
state_ = STATE_ALLOW_START_SEND;
else
state_ = STATE_ALLOW_START;
return true;
}
void NetLogTempFile::StartNetLog() {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE_USER_BLOCKING));
if (state_ == STATE_ALLOW_STOP)
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.
FILE* file = file_util::OpenFile(log_path_, "w");
if (file == NULL)
return;
scoped_ptr<base::Value> constants(NetInternalsUI::GetConstants());
net_log_logger_.reset(new net::NetLogLogger(file, *constants));
net_log_logger_->StartObserving(chrome_net_log_);
state_ = STATE_ALLOW_STOP;
}
void NetLogTempFile::StopNetLog() {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE_USER_BLOCKING));
if (state_ != STATE_ALLOW_STOP)
return;
net_log_logger_->StopObserving();
net_log_logger_.reset();
state_ = STATE_ALLOW_START_SEND;
}
bool NetLogTempFile::GetFilePath(base::FilePath* path) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE_USER_BLOCKING));
if (state_ != STATE_ALLOW_START_SEND)
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;
}
bool NetLogTempFile::GetNetExportLog() {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE_USER_BLOCKING));
base::FilePath temp_dir;
if (!GetNetExportLogDirectory(&temp_dir))
return false;
log_path_ = temp_dir.Append(log_filename_);
return true;
}
bool NetLogTempFile::GetNetExportLogDirectory(base::FilePath* path) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE_USER_BLOCKING));
return base::GetTempDir(path);
}
bool NetLogTempFile::NetExportLogExists() {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE_USER_BLOCKING));
DCHECK(!log_path_.empty());
return base::PathExists(log_path_);
}
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