henrike@webrtc.org | f7795df | 2014-05-13 18:00:26 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2004 The WebRTC Project Authors. All rights reserved. |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license |
| 5 | * that can be found in the LICENSE file in the root of the source |
| 6 | * tree. An additional intellectual property rights grant can be found |
| 7 | * in the file PATENTS. All contributing project authors may |
| 8 | * be found in the AUTHORS file in the root of the source tree. |
| 9 | */ |
| 10 | |
| 11 | #ifndef WEBRTC_BASE_FIREWALLSOCKETSERVER_H_ |
| 12 | #define WEBRTC_BASE_FIREWALLSOCKETSERVER_H_ |
| 13 | |
| 14 | #include <vector> |
| 15 | #include "webrtc/base/socketserver.h" |
| 16 | #include "webrtc/base/criticalsection.h" |
| 17 | |
| 18 | namespace rtc { |
| 19 | |
| 20 | class FirewallManager; |
| 21 | |
| 22 | // This SocketServer shim simulates a rule-based firewall server. |
| 23 | |
| 24 | enum FirewallProtocol { FP_UDP, FP_TCP, FP_ANY }; |
| 25 | enum FirewallDirection { FD_IN, FD_OUT, FD_ANY }; |
| 26 | |
| 27 | class FirewallSocketServer : public SocketServer { |
| 28 | public: |
| 29 | FirewallSocketServer(SocketServer * server, |
| 30 | FirewallManager * manager = NULL, |
| 31 | bool should_delete_server = false); |
| 32 | virtual ~FirewallSocketServer(); |
| 33 | |
| 34 | SocketServer* socketserver() const { return server_; } |
| 35 | void set_socketserver(SocketServer* server) { |
| 36 | if (server_ && should_delete_server_) { |
| 37 | delete server_; |
| 38 | server_ = NULL; |
| 39 | should_delete_server_ = false; |
| 40 | } |
| 41 | server_ = server; |
| 42 | } |
| 43 | |
| 44 | // Settings to control whether CreateSocket or Socket::Listen succeed. |
| 45 | void set_udp_sockets_enabled(bool enabled) { udp_sockets_enabled_ = enabled; } |
| 46 | void set_tcp_sockets_enabled(bool enabled) { tcp_sockets_enabled_ = enabled; } |
| 47 | bool tcp_listen_enabled() const { return tcp_listen_enabled_; } |
| 48 | void set_tcp_listen_enabled(bool enabled) { tcp_listen_enabled_ = enabled; } |
| 49 | |
| 50 | // Rules govern the behavior of Connect/Accept/Send/Recv attempts. |
| 51 | void AddRule(bool allow, FirewallProtocol p = FP_ANY, |
| 52 | FirewallDirection d = FD_ANY, |
| 53 | const SocketAddress& addr = SocketAddress()); |
| 54 | void AddRule(bool allow, FirewallProtocol p, |
| 55 | const SocketAddress& src, const SocketAddress& dst); |
| 56 | void ClearRules(); |
| 57 | |
| 58 | bool Check(FirewallProtocol p, |
| 59 | const SocketAddress& src, const SocketAddress& dst); |
| 60 | |
| 61 | virtual Socket* CreateSocket(int type); |
| 62 | virtual Socket* CreateSocket(int family, int type); |
| 63 | |
| 64 | virtual AsyncSocket* CreateAsyncSocket(int type); |
| 65 | virtual AsyncSocket* CreateAsyncSocket(int family, int type); |
| 66 | |
| 67 | virtual void SetMessageQueue(MessageQueue* queue) { |
| 68 | server_->SetMessageQueue(queue); |
| 69 | } |
| 70 | virtual bool Wait(int cms, bool process_io) { |
| 71 | return server_->Wait(cms, process_io); |
| 72 | } |
| 73 | virtual void WakeUp() { |
| 74 | return server_->WakeUp(); |
| 75 | } |
| 76 | |
| 77 | Socket * WrapSocket(Socket * sock, int type); |
| 78 | AsyncSocket * WrapSocket(AsyncSocket * sock, int type); |
| 79 | |
| 80 | private: |
| 81 | SocketServer * server_; |
| 82 | FirewallManager * manager_; |
| 83 | CriticalSection crit_; |
| 84 | struct Rule { |
| 85 | bool allow; |
| 86 | FirewallProtocol p; |
| 87 | FirewallDirection d; |
| 88 | SocketAddress src; |
| 89 | SocketAddress dst; |
| 90 | }; |
| 91 | std::vector<Rule> rules_; |
| 92 | bool should_delete_server_; |
| 93 | bool udp_sockets_enabled_; |
| 94 | bool tcp_sockets_enabled_; |
| 95 | bool tcp_listen_enabled_; |
| 96 | }; |
| 97 | |
| 98 | // FirewallManager allows you to manage firewalls in multiple threads together |
| 99 | |
| 100 | class FirewallManager { |
| 101 | public: |
| 102 | FirewallManager(); |
| 103 | ~FirewallManager(); |
| 104 | |
| 105 | void AddServer(FirewallSocketServer * server); |
| 106 | void RemoveServer(FirewallSocketServer * server); |
| 107 | |
| 108 | void AddRule(bool allow, FirewallProtocol p = FP_ANY, |
| 109 | FirewallDirection d = FD_ANY, |
| 110 | const SocketAddress& addr = SocketAddress()); |
| 111 | void ClearRules(); |
| 112 | |
| 113 | private: |
| 114 | CriticalSection crit_; |
| 115 | std::vector<FirewallSocketServer *> servers_; |
| 116 | }; |
| 117 | |
| 118 | } // namespace rtc |
| 119 | |
| 120 | #endif // WEBRTC_BASE_FIREWALLSOCKETSERVER_H_ |