1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
|
/*
* 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 to force packets in a particular range of UIDs over a particular interface.
// This is accomplished with a rule specifying these UIDs use the interface's routing chain.
int addUidRule(const char *iface, int uid_start, int uid_end, bool forward_dns);
int removeUidRule(const char *iface, int uid_start, int uid_end);
// 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 setUidRule(const char* iface, int uid_start, int uid_end, bool add, bool foward_dns);
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
|
