$Date: 2009/12/13 13:45:13 $
*/
+#include "ether_cap.h"
+
+#include "stg/common.h"
+#include "stg/raw_ip_packet.h"
+#include "stg/traffcounter.h"
+
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>
+#include <cerrno>
+#include <csignal>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <netinet/in.h>
#include <sys/types.h>
-#include <stdio.h>
-#include <string.h>
-#include <errno.h>
-#include <stdlib.h>
#include <unistd.h>
#include <linux/if_ether.h>
#include <linux/if_packet.h>
-#include <signal.h>
-
#include <sys/ioctl.h>
#include <net/if.h>
-#include "ether_cap.h"
-#include "common.h"
-#include "raw_ip_packet.h"
-
//#define CAP_DEBUG 1
-//-----------------------------------------------------------------------------
-class ETHER_CAP_CREATOR
-{
-private:
- ETHER_CAP * ec;
-
-public:
- ETHER_CAP_CREATOR()
- : ec(new ETHER_CAP())
- {
- };
- ~ETHER_CAP_CREATOR()
- {
- delete ec;
- };
-
- ETHER_CAP * GetCapturer()
- {
- return ec;
- };
-};
-//-----------------------------------------------------------------------------
-//-----------------------------------------------------------------------------
-//-----------------------------------------------------------------------------
-ETHER_CAP_CREATOR ecc;
-//-----------------------------------------------------------------------------
-//-----------------------------------------------------------------------------
-//-----------------------------------------------------------------------------
-PLUGIN * GetPlugin()
+extern "C" STG::Plugin* GetPlugin()
{
-return ecc.GetCapturer();
+ static ETHER_CAP plugin;
+ return &plugin;
}
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
-//-----------------------------------------------------------------------------
-const std::string ETHER_CAP::GetVersion() const
+//-----------------------------------------------------------------------------
+std::string ETHER_CAP::GetVersion() const
{
-return "Ether_cap v.1.2";
+return "cap_ether v.1.2";
}
//-----------------------------------------------------------------------------
ETHER_CAP::ETHER_CAP()
- : nonstop(false),
- isRunning(false),
+ : isRunning(false),
capSock(-1),
- traffCnt(NULL)
+ traffCnt(NULL),
+ logger(STG::PluginLogger::get("cap_ether"))
{
}
//-----------------------------------------------------------------------------
-void ETHER_CAP::SetTraffcounter(TRAFFCOUNTER * tc)
-{
-traffCnt = tc;
-}
-//-----------------------------------------------------------------------------
-const std::string & ETHER_CAP::GetStrError() const
-{
-return errorStr;
-}
-//-----------------------------------------------------------------------------
int ETHER_CAP::Start()
{
if (isRunning)
return -1;
}
-nonstop = true;
-
-if (pthread_create(&thread, NULL, Run, this) == 0)
- {
- return 0;
- }
+m_thread = std::jthread([this](auto token){ Run(std::move(token)); });
-errorStr = "Cannot create thread.";
-printfd(__FILE__, "Cannot create thread\n");
-return -1;
+return 0;
}
//-----------------------------------------------------------------------------
int ETHER_CAP::Stop()
if (!isRunning)
return 0;
-nonstop = false;
+m_thread.request_stop();
//5 seconds to thread stops itself
for (int i = 0; i < 25 && isRunning; i++)
{
- usleep(200000);
+ 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.";
- return -1;
- }
- for (int i = 0; i < 25 && isRunning; ++i)
- usleep(200000);
- if (isRunning)
- {
- errorStr = "ETHER_CAP not stopped.";
- printfd(__FILE__, "Cannot stop thread\n");
- return -1;
- }
- else
- {
- pthread_join(thread, NULL);
- }
- }
+ m_thread.detach();
+else
+ m_thread.join();
EthCapClose();
return 0;
}
//-----------------------------------------------------------------------------
-bool ETHER_CAP::IsRunning()
-{
-return isRunning;
-}
-//-----------------------------------------------------------------------------
-void * ETHER_CAP::Run(void * d)
+void ETHER_CAP::Run(std::stop_token token)
{
-ETHER_CAP * dc = (ETHER_CAP *)d;
-dc->isRunning = true;
+sigset_t signalSet;
+sigfillset(&signalSet);
+pthread_sigmask(SIG_BLOCK, &signalSet, NULL);
+
+isRunning = true;
struct ETH_IP
{
uint16_t ethHdr[8];
-RAW_PACKET rp;
+STG::RawPacket rp;
char padding[4];
char padding1[8];
};
-ETH_IP * ethIP;
-
char ethip[sizeof(ETH_IP)];
memset(ðip, 0, sizeof(ETH_IP));
-ethIP = (ETH_IP *)ðip;
+ETH_IP * ethIP = static_cast<ETH_IP *>(static_cast<void *>(ðip));
ethIP->rp.dataLen = -1;
char * iface = NULL;
-while (dc->nonstop)
+while (!token.stop_requested())
{
- if (dc->EthCapRead(ðip, 68 + 14, &iface))
+ if (EthCapRead(ðip, 68 + 14, &iface))
{
continue;
}
if (ethIP->ethHdr[7] != 0x8)
continue;
- dc->traffCnt->Process(ethIP->rp);
+ traffCnt->process(ethIP->rp);
}
-dc->isRunning = false;
-return NULL;
-}
-//-----------------------------------------------------------------------------
-uint16_t ETHER_CAP::GetStartPosition() const
-{
-return 10;
-}
-//-----------------------------------------------------------------------------
-uint16_t ETHER_CAP::GetStopPosition() const
-{
-return 10;
+isRunning = false;
}
//-----------------------------------------------------------------------------
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::EthCapRead(void * buffer, int blen, char **)
{
struct sockaddr_ll addr;
-int addrLen, res;
+socklen_t addrLen;
if (!WaitPackets(capSock))
{
addrLen = sizeof(addr);
-res = recvfrom(capSock, ((char*)buffer) + 2, blen, 0, (struct sockaddr *)&addr, (socklen_t*)&addrLen);
-
-if (-1 == res)
+if (recvfrom(capSock, static_cast<char*>(buffer) + 2, blen, 0, reinterpret_cast<sockaddr *>(&addr), &addrLen) < 0)
{
- if (errno != EINTR)
- {
- printfd(__FILE__, "Error on recvfrom: '%s'\n", strerror(errno));
- }
+ logger("recvfrom error: %s", strerror(errno));
return ENODATA;
}
return 0;
}
-//-----------------------------------------------------------------------------
-bool ETHER_CAP::WaitPackets(int sd) const
-{
-fd_set rfds;
-FD_ZERO(&rfds);
-FD_SET(sd, &rfds);
-
-struct timeval tv;
-tv.tv_sec = 0;
-tv.tv_usec = 500000;
-
-int res = select(sd + 1, &rfds, NULL, NULL, &tv);
-if (res == -1) // Error
- {
- if (errno != EINTR)
- {
- printfd(__FILE__, "Error on select: '%s'\n", strerror(errno));
- }
- return false;
- }
-
-if (res == 0) // Timeout
- {
- return false;
- }
-
-return true;
-}
git.stg.codes / stg.git / blobdiff