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>
40 #include <linux/if_ether.h>
41 #include <linux/if_packet.h>
44 #include <sys/ioctl.h>
47 #include "ether_cap.h"
49 #include "raw_ip_packet.h"
50 #include "traffcounter.h"
54 //-----------------------------------------------------------------------------
55 class ETHER_CAP_CREATOR {
69 ETHER_CAP * GetCapturer()
74 //-----------------------------------------------------------------------------
75 //-----------------------------------------------------------------------------
76 //-----------------------------------------------------------------------------
77 ETHER_CAP_CREATOR ecc;
78 //-----------------------------------------------------------------------------
79 //-----------------------------------------------------------------------------
80 //-----------------------------------------------------------------------------
83 return ecc.GetCapturer();
85 //-----------------------------------------------------------------------------
86 //-----------------------------------------------------------------------------
87 //-----------------------------------------------------------------------------
88 const std::string ETHER_CAP::GetVersion() const
90 return "Ether_cap v.1.2";
92 //-----------------------------------------------------------------------------
93 ETHER_CAP::ETHER_CAP()
100 //-----------------------------------------------------------------------------
101 int ETHER_CAP::Start()
106 if (EthCapOpen() < 0)
108 errorStr = "Cannot open socket!";
109 printfd(__FILE__, "Cannot open socket\n");
115 if (pthread_create(&thread, NULL, Run, this) == 0)
120 errorStr = "Cannot create thread.";
121 printfd(__FILE__, "Cannot create thread\n");
124 //-----------------------------------------------------------------------------
125 int ETHER_CAP::Stop()
132 //5 seconds to thread stops itself
133 for (int i = 0; i < 25 && isRunning; i++)
137 //after 5 seconds waiting thread still running. now killing it
140 if (pthread_kill(thread, SIGUSR1))
142 errorStr = "Cannot kill thread.";
145 for (int i = 0; i < 25 && isRunning; ++i)
149 errorStr = "ETHER_CAP not stopped.";
150 printfd(__FILE__, "Cannot stop thread\n");
155 pthread_join(thread, NULL);
162 //-----------------------------------------------------------------------------
163 void * ETHER_CAP::Run(void * d)
165 ETHER_CAP * dc = (ETHER_CAP *)d;
166 dc->isRunning = true;
178 char ethip[sizeof(ETH_IP)];
180 memset(ðip, 0, sizeof(ETH_IP));
182 ethIP = (ETH_IP *)ðip;
183 ethIP->rp.dataLen = -1;
189 if (dc->EthCapRead(ðip, 68 + 14, &iface))
194 if (ethIP->ethHdr[7] != 0x8)
197 dc->traffCnt->Process(ethIP->rp);
200 dc->isRunning = false;
203 //-----------------------------------------------------------------------------
204 int ETHER_CAP::EthCapOpen()
206 capSock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
209 //-----------------------------------------------------------------------------
210 int ETHER_CAP::EthCapClose()
215 //-----------------------------------------------------------------------------
216 int ETHER_CAP::EthCapRead(void * buffer, int blen, char **)
218 struct sockaddr_ll addr;
221 if (!WaitPackets(capSock))
226 addrLen = sizeof(addr);
228 res = recvfrom(capSock, ((char*)buffer) + 2, blen, 0, (struct sockaddr *)&addr, (socklen_t*)&addrLen);
234 printfd(__FILE__, "Error on recvfrom: '%s'\n", strerror(errno));
241 //-----------------------------------------------------------------------------
242 bool ETHER_CAP::WaitPackets(int sd) const
252 int res = select(sd + 1, &rfds, NULL, NULL, &tv);
253 if (res == -1) // Error
257 printfd(__FILE__, "Error on select: '%s'\n", strerror(errno));
262 if (res == 0) // Timeout