2 * This program is free software; you can redistribute it and/or modify
3 * it under the terms of the GNU General Public License as published by
4 * the Free Software Foundation; either version 2 of the License, or
5 * (at your option) any later version.
7 * This program is distributed in the hope that it will be useful,
8 * but WITHOUT ANY WARRANTY; without even the implied warranty of
9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10 * GNU General Public License for more details.
12 * You should have received a copy of the GNU General Public License
13 * along with this program; if not, write to the Free Software
14 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 * Author : Boris Mikhailenko <stg34@stargazer.dp.ua>
27 $Date: 2009/12/13 13:45:13 $
31 #include <sys/socket.h>
32 #include <arpa/inet.h>
33 #include <netinet/in.h>
34 #include <sys/types.h>
36 #include <linux/if_ether.h>
37 #include <linux/if_packet.h>
38 #include <sys/ioctl.h>
47 #include "stg/common.h"
48 #include "stg/raw_ip_packet.h"
49 #include "stg/traffcounter.h"
50 #include "stg/plugin_creator.h"
52 #include "ether_cap.h"
56 //-----------------------------------------------------------------------------
57 //-----------------------------------------------------------------------------
58 //-----------------------------------------------------------------------------
61 PLUGIN_CREATOR<ETHER_CAP> ecc;
64 extern "C" PLUGIN * GetPlugin();
65 //-----------------------------------------------------------------------------
66 //-----------------------------------------------------------------------------
67 //-----------------------------------------------------------------------------
70 return ecc.GetPlugin();
72 //-----------------------------------------------------------------------------
73 //-----------------------------------------------------------------------------
74 //-----------------------------------------------------------------------------
75 std::string ETHER_CAP::GetVersion() const
77 return "cap_ether v.1.2";
79 //-----------------------------------------------------------------------------
80 ETHER_CAP::ETHER_CAP()
85 logger(GetPluginLogger(GetStgLogger(), "cap_ether"))
88 //-----------------------------------------------------------------------------
89 int ETHER_CAP::Start()
96 errorStr = "Cannot open socket!";
97 printfd(__FILE__, "Cannot open socket\n");
103 if (pthread_create(&thread, NULL, Run, this))
105 errorStr = "Cannot create thread.";
106 logger("Cannot create thread.");
107 printfd(__FILE__, "Cannot create thread\n");
113 //-----------------------------------------------------------------------------
114 int ETHER_CAP::Stop()
121 //5 seconds to thread stops itself
122 for (int i = 0; i < 25 && isRunning; i++)
124 struct timespec ts = {0, 200000000};
125 nanosleep(&ts, NULL);
127 //after 5 seconds waiting thread still running. now killing it
130 if (pthread_kill(thread, SIGUSR1))
132 errorStr = "Cannot kill thread.";
133 logger("Cannot send signal to thread.");
136 for (int i = 0; i < 25 && isRunning; ++i)
138 struct timespec ts = {0, 200000000};
139 nanosleep(&ts, NULL);
143 errorStr = "ETHER_CAP not stopped.";
144 logger("Cannot stop thread.");
145 printfd(__FILE__, "Cannot stop thread\n");
150 pthread_join(thread, NULL);
157 //-----------------------------------------------------------------------------
158 void * ETHER_CAP::Run(void * d)
161 sigfillset(&signalSet);
162 pthread_sigmask(SIG_BLOCK, &signalSet, NULL);
164 ETHER_CAP * dc = static_cast<ETHER_CAP *>(d);
165 dc->isRunning = true;
175 char ethip[sizeof(ETH_IP)];
177 memset(ðip, 0, sizeof(ETH_IP));
179 ETH_IP * ethIP = static_cast<ETH_IP *>(static_cast<void *>(ðip));
180 ethIP->rp.dataLen = -1;
186 if (dc->EthCapRead(ðip, 68 + 14, &iface))
191 if (ethIP->ethHdr[7] != 0x8)
194 dc->traffCnt->Process(ethIP->rp);
197 dc->isRunning = false;
200 //-----------------------------------------------------------------------------
201 int ETHER_CAP::EthCapOpen()
203 capSock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
205 logger("Cannot create socket: %s", strerror(errno));
208 //-----------------------------------------------------------------------------
209 int ETHER_CAP::EthCapClose()
214 //-----------------------------------------------------------------------------
215 int ETHER_CAP::EthCapRead(void * buffer, int blen, char **)
217 struct sockaddr_ll addr;
220 if (!WaitPackets(capSock))
225 addrLen = sizeof(addr);
227 if (recvfrom(capSock, ((char*)buffer) + 2, blen, 0, (struct sockaddr *)&addr, (socklen_t*)&addrLen) < 0)
229 logger("recvfrom error: %s", strerror(errno));