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// Copyright (c) 2009 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/privacy_blacklist/blacklist_manager.h"
#include "base/message_loop.h"
#include "base/string_util.h"
#include "base/task.h"
#include "base/thread.h"
#include "chrome/browser/privacy_blacklist/blacklist.h"
#include "chrome/browser/privacy_blacklist/blacklist_io.h"
#include "chrome/browser/profile.h"
#include "chrome/common/chrome_constants.h"
#include "chrome/common/notification_service.h"
#include "chrome/common/notification_source.h"
#include "chrome/common/notification_type.h"
BlacklistPathProvider::~BlacklistPathProvider() {
}
BlacklistManager::BlacklistManager(Profile* profile,
BlacklistPathProvider* path_provider)
: first_read_finished_(false),
profile_(profile),
compiled_blacklist_path_(
profile->GetPath().Append(chrome::kPrivacyBlacklistFileName)),
path_provider_(path_provider) {
DCHECK(ChromeThread::CurrentlyOn(ChromeThread::UI));
registrar_.Add(this,
NotificationType::EXTENSION_LOADED,
Source<Profile>(profile));
registrar_.Add(this,
NotificationType::EXTENSION_UNLOADED,
Source<Profile>(profile));
ReadBlacklist();
}
void BlacklistManager::Observe(NotificationType type,
const NotificationSource& source,
const NotificationDetails& details) {
DCHECK(ChromeThread::CurrentlyOn(ChromeThread::UI));
switch (type.value) {
case NotificationType::EXTENSION_LOADED:
case NotificationType::EXTENSION_UNLOADED:
CompileBlacklist();
break;
default:
NOTREACHED();
break;
}
}
void BlacklistManager::CompileBlacklist() {
DCHECK(ChromeThread::CurrentlyOn(ChromeThread::UI));
ChromeThread::PostTask(ChromeThread::FILE, FROM_HERE,
NewRunnableMethod(this, &BlacklistManager::DoCompileBlacklist,
path_provider_->GetPersistentBlacklistPaths()));
}
void BlacklistManager::DoCompileBlacklist(
const std::vector<FilePath>& source_blacklists) {
DCHECK(ChromeThread::CurrentlyOn(ChromeThread::FILE));
bool success = true;
Blacklist blacklist;
std::string error_string;
for (std::vector<FilePath>::const_iterator i = source_blacklists.begin();
i != source_blacklists.end(); ++i) {
if (!BlacklistIO::ReadText(&blacklist, *i, &error_string)) {
success = false;
break;
}
}
// Only overwrite the current compiled blacklist if we read all source
// files successfully.
if (success)
success = BlacklistIO::WriteBinary(&blacklist, compiled_blacklist_path_);
ChromeThread::PostTask(ChromeThread::UI, FROM_HERE,
NewRunnableMethod(this, &BlacklistManager::OnBlacklistCompilationFinished,
success));
}
void BlacklistManager::OnBlacklistCompilationFinished(bool success) {
DCHECK(ChromeThread::CurrentlyOn(ChromeThread::UI));
if (success) {
ReadBlacklist();
} else {
string16 error_message(ASCIIToUTF16("Blacklist compilation failed."));
NotificationService::current()->Notify(
NotificationType::BLACKLIST_MANAGER_ERROR,
Source<Profile>(profile_),
Details<string16>(&error_message));
}
}
void BlacklistManager::ReadBlacklist() {
DCHECK(ChromeThread::CurrentlyOn(ChromeThread::UI));
ChromeThread::PostTask(ChromeThread::FILE, FROM_HERE,
NewRunnableMethod(this, &BlacklistManager::DoReadBlacklist,
path_provider_->GetTransientBlacklistPaths()));
}
void BlacklistManager::DoReadBlacklist(
const std::vector<FilePath>& transient_blacklists) {
DCHECK(ChromeThread::CurrentlyOn(ChromeThread::FILE));
scoped_ptr<Blacklist> blacklist(new Blacklist);
if (!BlacklistIO::ReadBinary(blacklist.get(), compiled_blacklist_path_)) {
ReportBlacklistReadResult(NULL);
return;
}
std::string error_string;
std::vector<FilePath>::const_iterator i;
for (i = transient_blacklists.begin();
i != transient_blacklists.end(); ++i) {
if (!BlacklistIO::ReadText(blacklist.get(), *i, &error_string)) {
ReportBlacklistReadResult(NULL);
return;
}
}
ReportBlacklistReadResult(blacklist.release());
}
void BlacklistManager::ReportBlacklistReadResult(Blacklist* blacklist) {
DCHECK(ChromeThread::CurrentlyOn(ChromeThread::FILE));
ChromeThread::PostTask(ChromeThread::UI, FROM_HERE,
NewRunnableMethod(this, &BlacklistManager::OnBlacklistReadFinished,
blacklist));
}
void BlacklistManager::OnBlacklistReadFinished(Blacklist* blacklist) {
DCHECK(ChromeThread::CurrentlyOn(ChromeThread::UI));
if (!blacklist) {
if (!first_read_finished_) {
// If we're loading for the first time, the compiled blacklist could
// just not exist. Try compiling it once.
first_read_finished_ = true;
CompileBlacklist();
} else {
string16 error_message(ASCIIToUTF16("Blacklist read failed."));
NotificationService::current()->Notify(
NotificationType::BLACKLIST_MANAGER_ERROR,
Source<Profile>(profile_),
Details<string16>(&error_message));
}
return;
}
first_read_finished_ = true;
compiled_blacklist_.reset(blacklist);
NotificationService::current()->Notify(
NotificationType::BLACKLIST_MANAGER_BLACKLIST_READ_FINISHED,
Source<Profile>(profile_),
Details<Blacklist>(blacklist));
}
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