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
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
|
/*
* ZeroTier One - Network Virtualization Everywhere
* Copyright (C) 2011-2015 ZeroTier, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* --
*
* ZeroTier may be used and distributed under the terms of the GPLv3, which
* are available at: http://www.gnu.org/licenses/gpl-3.0.html
*
* If you would like to embed ZeroTier into a commercial application or
* redistribute it in a modified binary form, please contact ZeroTier Networks
* LLC. Start here: http://www.zerotier.com/
*/
#ifndef ZT_NODE_HPP
#define ZT_NODE_HPP
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <map>
#include "Constants.hpp"
#include "../include/ZeroTierOne.h"
#include "InetAddress.hpp"
#include "Mutex.hpp"
#include "MAC.hpp"
namespace ZeroTier {
class RuntimeEnvironment;
class Network;
/**
* Implementation of Node object as defined in CAPI
*
* The pointer returned by ZT1_Node_new() is an instance of this class.
*/
class Node
{
public:
Node(
ZT1_DataStoreGetFunction *dataStoreGetFunction,
ZT1_DataStorePutFunction *dataStorePutFunction,
ZT1_VirtualNetworkConfigCallback *networkConfigCallback,
ZT1_StatusCallback *statusCallback);
~Node();
// Public API Functions ----------------------------------------------------
ZT1_ResultCode run(
uint64_t now,
const ZT1_WireMessage *inputWireMessages,
unsigned int inputWireMessageCount,
const ZT1_VirtualNetworkFrame *inputFrames,
unsigned int inputFrameCount,
const ZT1_WireMessage **outputWireMessages,
unsigned int *outputWireMessageCount,
const ZT1_VirtualNetworkFrame **outputFrames,
unsigned int *outputLanFrameCount,
unsigned long *maxNextInterval);
ZT1_ResultCode join(uint64_t nwid);
ZT1_ResultCode leave(uint64_t nwid);
void status(ZT1_NodeStatus *status);
ZT1_PeerList *peers();
ZT1_VirtualNetworkConfig *networkConfig(uint64_t nwid);
ZT1_VirtualNetworkList *listNetworks();
void freeQueryResult(void *qr);
void setNetconfMaster(void *networkConfigMasterInstance);
// Internal functions ------------------------------------------------------
/**
* @return Time as of last call to run()
*/
inline uint64_t now() const throw() { return _now; }
/**
* @return Current level of desperation
*/
inline int desperation() const throw() { return (int)((_now - _timeOfLastPrivilgedPacket) / ZT_DESPERATION_INCREMENT); }
/**
* Enqueue a ZeroTier message to be sent
*
* @param addr Destination address
* @param data Packet data
* @param len Packet length
*/
inline void putPacket(const InetAddress &addr,const void *data,unsigned int len)
{
Mutex::Lock _l(_outputWireMessages_m);
if (_outputWireMessageCount >= _outputWireMessageCapacity) {
ZT1_WireMessage *old = _outputWireMessages;
_outputWireMessages = new ZT1_WireMessage[_outputWireMessageCapacity *= 2];
memcpy(_outputWireMessages,old,sizeof(ZT1_WireMessage) * _outputWireMessageCount);
delete [] old;
}
ZT1_WireMessage &wm = _outputWireMessages[_outputWireMessageCount++];
memcpy(&(wm.address),&addr,sizeof(struct sockaddr_storage));
wm.desperation = this->desperation();
wm.spam = (int)((++_spamCounter % ZT_DESPERATION_SPAM_EVERY) == 0);
memcpy(wm.packetData,data,len);
wm.packetLength = len;
}
/**
* Enqueue a frame to be injected into a tap device (port)
*
* @param nwid Network ID
* @param source Source MAC
* @param dest Destination MAC
* @param etherType 16-bit ethernet type
* @param vlanId VLAN ID or 0 if none
* @param data Frame data
* @param len Frame length
*/
inline void putFrame(uint64_t nwid,const MAC &source,const MAC &dest,unsigned int etherType,unsigned int vlanId,const void *data,unsigned int len)
{
Mutex::Lock _l(_outputFrames_m);
if (_outputFrameCount >= _outputFrameCapacity) {
ZT1_VirtualNetworkFrame *old = _outputFrames;
_outputFrames = new ZT1_VirtualNetworkFrame[_outputFrameCapacity *= 2];
memcpy(_outputFrames,old,sizeof(ZT1_VirtualNetworkFrame) * _outputFrameCount);
delete [] old;
}
ZT1_VirtualNetworkFrame &f = _outputFrames[_outputFrameCount++];
f.nwid = nwid;
f.sourceMac = source.toInt();
f.destMac = dest.toInt();
f.etherType = etherType;
f.vlanId = vlanId;
memcpy(f.frameData,data,len);
f.frameLength = len;
}
/**
* @param nwid Network ID
* @return Network instance
*/
inline Network *network(uint64_t nwid)
{
Mutex::Lock _l(_networks_m);
std::map< uint64_t,Network * >::iterator nw(_networks.find(nwid));
return ((nw == _networks.end()) ? (Network *)0 : nw->second);
}
private:
RuntimeEnvironment *RR;
ZT1_WireMessage *_outputWireMessages;
unsigned long _outputWireMessageCount;
unsigned long _outputWireMessageCapacity;
Mutex _outputWireMessages_m;
ZT1_VirtualNetworkFrame *_outputFrames;
unsigned long _outputFrameCount;
unsigned long _outputFrameCapacity;
Mutex _outputFrames_m;
ZT1_DataStoreGetFunction *_dataStoreGetFunction;
ZT1_DataStorePutFunction *_dataStorePutFunction;
ZT1_VirtualNetworkConfigCallback *_networkConfigCallback;
ZT1_StatusCallback *_statusCallback;
//Dictionary _localConfig; // persisted as local.conf
//Mutex _localConfig_m;
std::map< uint64_t,Network * > _networks;
Mutex _networks_m;
uint64_t _now; // time of last run()
uint64_t _timeOfLastPacketReceived;
uint64_t _timeOfLastPrivilgedPacket;
unsigned int _spamCounter; // used to "spam" every Nth packet
};
} // namespace ZeroTier
#endif
|
