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// Copyright 2014 The Chromium OS Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef FIREWALLD_IPTABLES_H_
#define FIREWALLD_IPTABLES_H_
#include <stdint.h>
#include <set>
#include <string>
#include <utility>
#include <vector>
#include <base/macros.h>
#include <chromeos/errors/error.h>
#include "firewalld/dbus_adaptor/org.chromium.Firewalld.h"
namespace firewalld {
enum ProtocolEnum { kProtocolTcp, kProtocolUdp };
class IpTables : public org::chromium::FirewalldInterface {
public:
typedef std::pair<uint16_t, std::string> Hole;
IpTables() = default;
~IpTables();
// D-Bus methods.
bool PunchTcpHole(uint16_t in_port, const std::string& in_interface) override;
bool PunchUdpHole(uint16_t in_port, const std::string& in_interface) override;
bool PlugTcpHole(uint16_t in_port, const std::string& in_interface) override;
bool PlugUdpHole(uint16_t in_port, const std::string& in_interface) override;
bool RequestVpnSetup(const std::vector<std::string>& usernames,
const std::string& interface) override;
bool RemoveVpnSetup(const std::vector<std::string>& usernames,
const std::string& interface) override;
// Close all outstanding firewall holes.
void PlugAllHoles();
private:
friend class IpTablesTest;
FRIEND_TEST(IpTablesTest, ApplyVpnSetupAddSuccess);
FRIEND_TEST(IpTablesTest, ApplyVpnSetupAddFailureInUsername);
FRIEND_TEST(IpTablesTest, ApplyVpnSetupAddFailureInMasquerade);
FRIEND_TEST(IpTablesTest, ApplyVpnSetupAddFailureInRuleForUserTraffic);
FRIEND_TEST(IpTablesTest, ApplyVpnSetupRemoveSuccess);
FRIEND_TEST(IpTablesTest, ApplyVpnSetupRemoveFailure);
bool PunchHole(uint16_t port,
const std::string& interface,
std::set<Hole>* holes,
ProtocolEnum protocol);
bool PlugHole(uint16_t port,
const std::string& interface,
std::set<Hole>* holes,
ProtocolEnum protocol);
bool AddAcceptRules(ProtocolEnum protocol,
uint16_t port,
const std::string& interface);
bool DeleteAcceptRules(ProtocolEnum protocol,
uint16_t port,
const std::string& interface);
virtual bool AddAcceptRule(const std::string& executable_path,
ProtocolEnum protocol,
uint16_t port,
const std::string& interface);
virtual bool DeleteAcceptRule(const std::string& executable_path,
ProtocolEnum protocol,
uint16_t port,
const std::string& interface);
bool ApplyVpnSetup(const std::vector<std::string>& usernames,
const std::string& interface,
bool add);
virtual bool ApplyMasquerade(const std::string& interface, bool add);
virtual bool ApplyMarkForUserTraffic(const std::string& user_name, bool add);
virtual bool ApplyRuleForUserTraffic(bool add);
int Execv(const std::vector<std::string>& argv);
// Keep track of firewall holes to avoid adding redundant firewall rules.
std::set<Hole> tcp_holes_;
std::set<Hole> udp_holes_;
DISALLOW_COPY_AND_ASSIGN(IpTables);
};
} // namespace firewalld
#endif // FIREWALLD_IPTABLES_H_
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