--- /dev/null
+/*
+ * 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 2 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, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+/*
+Date: 18.09.2002
+*/
+
+/*
+* Author : Boris Mikhailenko <stg34@stargazer.dp.ua>
+*/
+
+/*
+$Revision: 1.23 $
+$Date: 2009/12/13 13:45:13 $
+*/
+
+
+#include <sys/socket.h>
+#include <arpa/inet.h>
+#include <netinet/in.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <linux/if_ether.h>
+#include <linux/if_packet.h>
+#include <sys/ioctl.h>
+#include <net/if.h>
+
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>
+#include <cerrno>
+#include <csignal>
+
+#include "stg/common.h"
+#include "stg/raw_ip_packet.h"
+#include "stg/traffcounter.h"
+#include "stg/plugin_creator.h"
+
+#include "ether_cap.h"
+
+//#define CAP_DEBUG 1
+
+//-----------------------------------------------------------------------------
+//-----------------------------------------------------------------------------
+//-----------------------------------------------------------------------------
+namespace
+{
+PLUGIN_CREATOR<ETHER_CAP> ecc;
+}
+
+extern "C" PLUGIN * GetPlugin();
+//-----------------------------------------------------------------------------
+//-----------------------------------------------------------------------------
+//-----------------------------------------------------------------------------
+PLUGIN * GetPlugin()
+{
+return ecc.GetPlugin();
+}
+//-----------------------------------------------------------------------------
+//-----------------------------------------------------------------------------
+//-----------------------------------------------------------------------------
+std::string ETHER_CAP::GetVersion() const
+{
+return "cap_ether v.1.2";
+}
+//-----------------------------------------------------------------------------
+ETHER_CAP::ETHER_CAP()
+ : nonstop(false),
+ isRunning(false),
+ capSock(-1),
+ traffCnt(NULL),
+ logger(GetPluginLogger(GetStgLogger(), "cap_ether"))
+{
+}
+//-----------------------------------------------------------------------------
+int ETHER_CAP::Start()
+{
+if (isRunning)
+ return 0;
+
+if (EthCapOpen() < 0)
+ {
+ errorStr = "Cannot open socket!";
+ printfd(__FILE__, "Cannot open socket\n");
+ return -1;
+ }
+
+nonstop = true;
+
+if (pthread_create(&thread, NULL, Run, this))
+ {
+ errorStr = "Cannot create thread.";
+ logger("Cannot create thread.");
+ printfd(__FILE__, "Cannot create thread\n");
+ return -1;
+ }
+
+return 0;
+}
+//-----------------------------------------------------------------------------
+int ETHER_CAP::Stop()
+{
+if (!isRunning)
+ return 0;
+
+nonstop = false;
+
+//5 seconds to thread stops itself
+for (int i = 0; i < 25 && isRunning; i++)
+ {
+ struct timespec ts = {0, 200000000};
+ nanosleep(&ts, NULL);
+ }
+//after 5 seconds waiting thread still running. now killing it
+if (isRunning)
+ {
+ if (pthread_kill(thread, SIGUSR1))
+ {
+ errorStr = "Cannot kill thread.";
+ logger("Cannot send signal to thread.");
+ return -1;
+ }
+ for (int i = 0; i < 25 && isRunning; ++i)
+ {
+ struct timespec ts = {0, 200000000};
+ nanosleep(&ts, NULL);
+ }
+ if (isRunning)
+ {
+ errorStr = "ETHER_CAP not stopped.";
+ logger("Cannot stop thread.");
+ printfd(__FILE__, "Cannot stop thread\n");
+ return -1;
+ }
+ else
+ {
+ pthread_join(thread, NULL);
+ }
+ }
+
+EthCapClose();
+return 0;
+}
+//-----------------------------------------------------------------------------
+void * ETHER_CAP::Run(void * d)
+{
+sigset_t signalSet;
+sigfillset(&signalSet);
+pthread_sigmask(SIG_BLOCK, &signalSet, NULL);
+
+ETHER_CAP * dc = static_cast<ETHER_CAP *>(d);
+dc->isRunning = true;
+
+struct ETH_IP
+{
+uint16_t ethHdr[8];
+RAW_PACKET rp;
+char padding[4];
+char padding1[8];
+};
+
+char ethip[sizeof(ETH_IP)];
+
+memset(ðip, 0, sizeof(ETH_IP));
+
+ETH_IP * ethIP = static_cast<ETH_IP *>(static_cast<void *>(ðip));
+ethIP->rp.dataLen = -1;
+
+char * iface = NULL;
+
+while (dc->nonstop)
+ {
+ if (dc->EthCapRead(ðip, 68 + 14, &iface))
+ {
+ continue;
+ }
+
+ if (ethIP->ethHdr[7] != 0x8)
+ continue;
+
+ dc->traffCnt->Process(ethIP->rp);
+ }
+
+dc->isRunning = false;
+return NULL;
+}
+//-----------------------------------------------------------------------------
+int ETHER_CAP::EthCapOpen()
+{
+capSock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
+if (capSock < 0)
+ logger("Cannot create socket: %s", strerror(errno));
+return capSock;
+}
+//-----------------------------------------------------------------------------
+int ETHER_CAP::EthCapClose()
+{
+close(capSock);
+return 0;
+}
+//-----------------------------------------------------------------------------
+int ETHER_CAP::EthCapRead(void * buffer, int blen, char **)
+{
+struct sockaddr_ll addr;
+int addrLen;
+
+if (!WaitPackets(capSock))
+ {
+ return ENODATA;
+ }
+
+addrLen = sizeof(addr);
+
+if (recvfrom(capSock, ((char*)buffer) + 2, blen, 0, (struct sockaddr *)&addr, (socklen_t*)&addrLen) < 0)
+ {
+ logger("recvfrom error: %s", strerror(errno));
+ return ENODATA;
+ }
+
+return 0;
+}