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// Copyright 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/extensions/activity_log/activity_log_policy.h"
#include <stdint.h>
#include "base/files/file_path.h"
#include "base/json/json_string_value_serializer.h"
#include "base/logging.h"
#include "base/strings/stringprintf.h"
#include "base/time/clock.h"
#include "base/time/time.h"
#include "chrome/browser/extensions/activity_log/activity_action_constants.h"
#include "chrome/browser/profiles/profile.h"
#include "content/public/browser/browser_thread.h"
#include "extensions/common/extension.h"
#include "url/gurl.h"
using content::BrowserThread;
namespace constants = activity_log_constants;
namespace {
// Obsolete database tables: these should be dropped from the database if
// found.
const char* const kObsoleteTables[] = {"activitylog_apis",
"activitylog_blocked",
"activitylog_urls"};
} // namespace
namespace extensions {
ActivityLogPolicy::ActivityLogPolicy(Profile* profile) {}
ActivityLogPolicy::~ActivityLogPolicy() {}
void ActivityLogPolicy::SetClockForTesting(scoped_ptr<base::Clock> clock) {
testing_clock_.reset(clock.release());
}
base::Time ActivityLogPolicy::Now() const {
if (testing_clock_)
return testing_clock_->Now();
else
return base::Time::Now();
}
ActivityLogDatabasePolicy::ActivityLogDatabasePolicy(
Profile* profile,
const base::FilePath& database_name)
: ActivityLogPolicy(profile) {
CHECK(profile);
base::FilePath profile_base_path = profile->GetPath();
db_ = new ActivityDatabase(this);
database_path_ = profile_base_path.Append(database_name);
}
void ActivityLogDatabasePolicy::Init() {
ScheduleAndForget(db_, &ActivityDatabase::Init, database_path_);
}
void ActivityLogDatabasePolicy::Flush() {
ScheduleAndForget(activity_database(),
&ActivityDatabase::AdviseFlush,
ActivityDatabase::kFlushImmediately);
}
sql::Connection* ActivityLogDatabasePolicy::GetDatabaseConnection() const {
return db_->GetSqlConnection();
}
// static
std::string ActivityLogPolicy::Util::Serialize(const base::Value* value) {
std::string value_as_text;
if (!value) {
value_as_text = "";
} else {
JSONStringValueSerializer serializer(&value_as_text);
serializer.SerializeAndOmitBinaryValues(*value);
}
return value_as_text;
}
// static
void ActivityLogPolicy::Util::StripPrivacySensitiveFields(
scoped_refptr<Action> action) {
// Clear incognito URLs/titles.
if (action->page_incognito()) {
action->set_page_url(GURL());
action->set_page_title("");
action->set_page_incognito(false);
}
if (action->arg_incognito()) {
action->set_arg_url(GURL());
action->set_arg_incognito(false);
}
// Strip query parameters, username/password, etc., from URLs.
if (action->page_url().is_valid() || action->arg_url().is_valid()) {
url::Replacements<char> url_sanitizer;
url_sanitizer.ClearUsername();
url_sanitizer.ClearPassword();
url_sanitizer.ClearQuery();
url_sanitizer.ClearRef();
if (action->page_url().is_valid())
action->set_page_url(action->page_url().ReplaceComponents(url_sanitizer));
if (action->arg_url().is_valid())
action->set_arg_url(action->arg_url().ReplaceComponents(url_sanitizer));
}
// Clear WebRequest details; only keep a record of which types of
// modifications were performed.
if (action->action_type() == Action::ACTION_WEB_REQUEST) {
base::DictionaryValue* details = NULL;
if (action->mutable_other()->GetDictionary(constants::kActionWebRequest,
&details)) {
base::DictionaryValue::Iterator details_iterator(*details);
while (!details_iterator.IsAtEnd()) {
details->SetBoolean(details_iterator.key(), true);
details_iterator.Advance();
}
}
}
}
// static
void ActivityLogPolicy::Util::StripArguments(const ApiSet& api_whitelist,
scoped_refptr<Action> action) {
if (api_whitelist.find(
std::make_pair(action->action_type(), action->api_name())) ==
api_whitelist.end()) {
action->set_args(scoped_ptr<base::ListValue>());
}
}
// static
base::Time ActivityLogPolicy::Util::AddDays(const base::Time& base_date,
int days) {
// To allow for time zone changes, add an additional partial day then round
// down to midnight.
return (base_date + base::TimeDelta::FromDays(days) +
base::TimeDelta::FromHours(4)).LocalMidnight();
}
// static
void ActivityLogPolicy::Util::ComputeDatabaseTimeBounds(const base::Time& now,
int days_ago,
int64* early_bound,
int64* late_bound) {
base::Time morning_midnight = now.LocalMidnight();
if (days_ago == 0) {
*early_bound = morning_midnight.ToInternalValue();
*late_bound = base::Time::Max().ToInternalValue();
} else {
base::Time early_time = Util::AddDays(morning_midnight, -days_ago);
base::Time late_time = Util::AddDays(early_time, 1);
*early_bound = early_time.ToInternalValue();
*late_bound = late_time.ToInternalValue();
}
}
// static
bool ActivityLogPolicy::Util::DropObsoleteTables(sql::Connection* db) {
for (size_t i = 0; i < arraysize(kObsoleteTables); i++) {
const char* table_name = kObsoleteTables[i];
if (db->DoesTableExist(table_name)) {
std::string drop_statement =
base::StringPrintf("DROP TABLE %s", table_name);
if (!db->Execute(drop_statement.c_str())) {
return false;
}
}
}
return true;
}
} // namespace extensions
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