| /* |
| * Copyright (C) 2008 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #ifndef _SECONDARY_TABLE_CONTROLLER_H |
| #define _SECONDARY_TABLE_CONTROLLER_H |
| |
| #include <map> |
| |
| #include <sysutils/FrameworkListener.h> |
| |
| #include <net/if.h> |
| #include "NetdConstants.h" |
| #include "NetworkController.h" |
| |
| #ifndef IFNAMSIZ |
| #define IFNAMSIZ 16 |
| #endif |
| |
| static const int BASE_TABLE_NUMBER = 60; |
| static const char *EXEMPT_PRIO = "99"; |
| static const char *RULE_PRIO = "100"; |
| |
| // SecondaryTableController is responsible for maintaining the "secondary" routing tables, where |
| // "secondary" means not the main table. The "secondary" tables are used for VPNs. |
| class SecondaryTableController { |
| |
| public: |
| SecondaryTableController(NetworkController* controller); |
| virtual ~SecondaryTableController(); |
| |
| // Add/remove a particular route in a particular interface's table. |
| int addRoute(SocketClient *cli, char *iface, char *dest, int prefixLen, char *gateway); |
| int removeRoute(SocketClient *cli, char *iface, char *dest, int prefixLen, char *gateway); |
| |
| int modifyFromRule(unsigned netId, const char *action, const char *addr); |
| int modifyLocalRoute(unsigned netId, const char *action, const char *iface, const char *addr); |
| |
| // Add/remove rules and chains so packets intended for a particular interface use that |
| // interface. |
| int addFwmarkRule(const char *iface); |
| int removeFwmarkRule(const char *iface); |
| |
| // Add/remove rules so packets going to a particular range of IPs use a particular interface. |
| // This is accomplished by adding/removeing a rule to/from an interface’s chain to mark packets |
| // destined for the IP address range with the mark for the interface’s table. |
| int addFwmarkRoute(const char* iface, const char *dest, int prefix); |
| int removeFwmarkRoute(const char* iface, const char *dest, int prefix); |
| |
| // Add/remove rules so packets going to a particular IP address use the main table (i.e. not |
| // the VPN tables). This is used in conjunction with adding a specific route to the main |
| // table. This is to support requestRouteToHost(). |
| // This is accomplished by marking these packets with the protect mark and adding a rule to |
| // use the main table. |
| int addHostExemption(const char *host); |
| int removeHostExemption(const char *host); |
| |
| void getUidMark(SocketClient *cli, int uid); |
| void getProtectMark(SocketClient *cli); |
| |
| int setupIptablesHooks(); |
| |
| static const char* LOCAL_MANGLE_OUTPUT; |
| static const char* LOCAL_MANGLE_POSTROUTING; |
| static const char* LOCAL_NAT_POSTROUTING; |
| |
| |
| private: |
| NetworkController *mNetCtrl; |
| |
| int setFwmarkRule(const char *iface, bool add); |
| int setFwmarkRoute(const char* iface, const char *dest, int prefix, bool add); |
| int setHostExemption(const char *host, bool add); |
| int modifyRoute(SocketClient *cli, const char *action, char *iface, char *dest, int prefix, |
| char *gateway, unsigned netId); |
| |
| std::map<unsigned, int> mNetIdRuleCount; |
| void modifyRuleCount(unsigned netId, const char *action); |
| const char *getVersion(const char *addr); |
| IptablesTarget getIptablesTarget(const char *addr); |
| |
| int runCmd(int argc, const char **argv); |
| }; |
| |
| #endif |