$Author: faust $
*/
+#include "ether_cap.h"
+
+#include "stg/common.h"
+#include "stg/raw_ip_packet.h"
+#include "stg/traffcounter.h"
+
+#include <cerrno>
+#include <cstdio>
+#include <cstring>
+#include <cstdlib>
+#include <csignal>
+
#include <sys/types.h>
#include <sys/uio.h>
#include <sys/socket.h>
#include <sys/time.h>
#include <sys/ioctl.h>
-#include <sys/poll.h>
#include <net/bpf.h>
#include <net/if.h>
#include <netinet/in.h>
#include <arpa/inet.h>
-
-#include <errno.h>
#include <fcntl.h>
-#include <stdio.h>
-#include <string.h>
-#include <stdlib.h>
-#include <signal.h>
#include <unistd.h>
-#include <string>
-#include <vector>
-
-#include "ether_cap.h"
-#include "common.h"
-#include "raw_ip_packet.h"
-
-using namespace std;
-
//#define CAP_DEBUG 1
-//-----------------------------------------------------------------------------
-//-----------------------------------------------------------------------------
-class BPF_CAP_CREATOR
-{
-private:
- BPF_CAP * bpfc;
-
-public:
- BPF_CAP_CREATOR()
- : bpfc(new BPF_CAP())
- {
- };
- ~BPF_CAP_CREATOR()
- {
- delete bpfc;
- };
-
- BPF_CAP * GetCapturer()
- {
- return bpfc;
- };
-};
-//-----------------------------------------------------------------------------
-//-----------------------------------------------------------------------------
-//-----------------------------------------------------------------------------
-BPF_CAP_CREATOR bcc;
-//-----------------------------------------------------------------------------
-//-----------------------------------------------------------------------------
-//-----------------------------------------------------------------------------
-BASE_PLUGIN * GetPlugin()
+extern "C" STG::Plugin* GetPlugin()
{
-return bcc.GetCapturer();
+ static BPF_CAP plugin;
+ return &plugin;
}
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
-int BPF_CAP_SETTINGS::ParseSettings(const MODULE_SETTINGS & s)
+int BPF_CAP_SETTINGS::ParseSettings(const STG::ModuleSettings & s)
{
-//char sep[]= ", \t\n\r";
-//char *s;
-string ifaces;
-//char * str;
-//char *p;
-
iface.erase(iface.begin(), iface.end());
-//PARAM_VALUE pv;
-//pv.param = "WorkDir";
-//vector<PARAM_VALUE>::const_iterator pvi;
-
if (s.moduleParams.empty())
{
errorStr = "Parameter \'iface\' not found.";
}
}
-/*if (cf.ReadString("Iface", &ifaces, "NoIface") < 0)
- {
- errorStr = "Cannot read parameter \'Iface\' from " + cf.GetFileName();
- return -1;
- }
-
-str = new char[ifaces.size() + 1];
-strcpy(str, ifaces.c_str());
-p = str;
-
-while((s = strtok(p, sep)))
- {
- printfd(__FILE__, "iface[] = %s\n", s);
- p = NULL;
- iface.push_back(s);
- //strncpy(iface[i++], s, DEV_NAME_LEN);
- //devNum++;
- }
-
-delete[] str;
-if (!ifaces.size())
- {
- errorStr = "Error read parameter \'Iface\' from " + cf.GetFileName();
- return -1;
- }*/
-
return 0;
}
//-----------------------------------------------------------------------------
-string BPF_CAP_SETTINGS::GetIface(unsigned int num)
+std::string BPF_CAP_SETTINGS::GetIface(unsigned int num)
{
if (num >= iface.size())
{
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
-const string BPF_CAP::GetVersion() const
+std::string BPF_CAP::GetVersion() const
{
-return "bpf_cap v.1.0";
+return "cap_bpf v.1.0";
}
//-----------------------------------------------------------------------------
BPF_CAP::BPF_CAP()
+ : nonstop(false),
+ isRunning(false),
+ capSock(-1),
+ traffCnt(NULL),
+ logger(STG::PluginLogger::get("cap_bpf"))
{
-isRunning = false;
-nonstop = false;
-}
-//-----------------------------------------------------------------------------
-void BPF_CAP::SetSettings(const MODULE_SETTINGS & s)
-{
-settings = s;
}
//-----------------------------------------------------------------------------
int BPF_CAP::ParseSettings()
return 0;
}
//-----------------------------------------------------------------------------
-void BPF_CAP::SetTraffcounter(TRAFFCOUNTER * tc)
-{
-traffCnt = tc;
-}
-//-----------------------------------------------------------------------------
-const string & BPF_CAP::GetStrError() const
-{
-return errorStr;
-}
-//-----------------------------------------------------------------------------
int BPF_CAP::Start()
{
if (isRunning)
nonstop = true;
-if (pthread_create(&thread, NULL, Run, this) == 0)
+if (pthread_create(&thread, NULL, Run, this))
{
- return 0;
+ errorStr = "Cannot create thread.";
+ logger("Cannot create thread.");
+ printfd(__FILE__, "Cannot create thread\n");
+ return -1;
}
-errorStr = "Cannot create thread.";
-printfd(__FILE__, "Cannot create thread\n");
-return -1;
+return 0;
}
//-----------------------------------------------------------------------------
int BPF_CAP::Stop()
if (!isRunning)
break;
- usleep(200000);
+ struct timespec ts = {0, 200000000};
+ nanosleep(&ts, NULL);
}
//after 5 seconds waiting thread still running. now killing it
if (pthread_kill(thread, SIGINT))
{
errorStr = "Cannot kill thread.";
+ logger("Cannot send signal to thread.");
printfd(__FILE__, "Cannot kill thread\n");
return -1;
}
return 0;
}
//-----------------------------------------------------------------------------
-bool BPF_CAP::IsRunning()
-{
-return isRunning;
-}
-//-----------------------------------------------------------------------------
void * BPF_CAP::Run(void * d)
{
-BPF_CAP * dc = (BPF_CAP *)d;
+sigset_t signalSet;
+sigfillset(&signalSet);
+pthread_sigmask(SIG_BLOCK, &signalSet, NULL);
+
+BPF_CAP * dc = static_cast<BPF_CAP *>(d);
dc->isRunning = true;
uint8_t hdr[96]; //68 + 14 + 4(size) + 9(SYS_IFACE) + 1(align to 4) = 96
-RAW_PACKET * rpp = (RAW_PACKET *)&hdr[14];
+STG::RawPacket * rpp = (STG::RawPacket *)&hdr[14];
memset(hdr, 0, sizeof(hdr));
rpp->dataLen = -1;
while (dc->nonstop)
{
- dc->BPFCapRead((char*)&hdr, 68 + 14, &iface);
+ if (dc->BPFCapRead((char*)&hdr, 68 + 14, &iface))
+ continue;
if (!(hdr[12] == 0x8 && hdr[13] == 0x0))
- {
continue;
- }
- dc->traffCnt->Process(*rpp);
+ dc->traffCnt->process(*rpp);
}
dc->isRunning = false;
return NULL;
}
//-----------------------------------------------------------------------------
-uint16_t BPF_CAP::GetStartPosition() const
-{
-return 0;
-}
-//-----------------------------------------------------------------------------
-uint16_t BPF_CAP::GetStopPosition() const
-{
-return 0;
-}
-//-----------------------------------------------------------------------------
int BPF_CAP::BPFCapOpen()
{
-//for (int i = 0; i < settings->devNum; i++)
int i = 0;
BPF_DATA bd;
pollfd pd;
{
bpfData.push_back(bd);
if (BPFCapOpen(&bpfData[i]) < 0)
- {
- return -1;
- }
+ {
+ return -1;
+ }
pd.events = POLLIN;
pd.fd = bpfData[i].fd;
return 0;
}
//-----------------------------------------------------------------------------
-//int BPF_CAP::BPFCapOpen(string ifaceToOpen)
int BPF_CAP::BPFCapOpen(BPF_DATA * bd)
{
char devbpf[20];
int im = 1;
struct ifreq ifr;
-do {
+do
+ {
sprintf(devbpf, "/dev/bpf%d", i);
i++;
bd->fd = open(devbpf, O_RDONLY);
- //cd[n].fd = open(devbpf, O_RDONLY);
} while(bd->fd < 0 && errno == EBUSY);
- //while(cd[n].fd < 0 && errno == EBUSY);
-//if (cd[n].fd < 0)
if (bd->fd < 0)
{
errorStr = "Can't capture packets. Open bpf device for " + bd->iface + " error.";
+ logger("Cannot open device for interface '%s': %s", bd->iface.c_str(), strerror(errno));
printfd(__FILE__, "Cannot open BPF device\n");
return -1;
}
-//strncpy(ifr.ifr_name, settings->iface[n], sizeof(ifr.ifr_name));
strncpy(ifr.ifr_name, bd->iface.c_str(), sizeof(ifr.ifr_name));
-//if (ioctl(cd[n].fd, BIOCSBLEN, (caddr_t)&l) < 0)
if (ioctl(bd->fd, BIOCSBLEN, (caddr_t)&l) < 0)
{
- errorStr = bd->iface + " BIOCSBLEN " + string(strerror(errno));
+ errorStr = bd->iface + " BIOCSBLEN " + std::string(strerror(errno));
+ logger("ioctl (BIOCSBLEN) error for interface '%s': %s", bd->iface.c_str(), strerror(errno));
printfd(__FILE__, "ioctl failed: '%s'\n", errorStr.c_str());
return -1;
}
-//if (ioctl(cd[n].fd, BIOCSETIF, (caddr_t)&ifr) < 0 )
if (ioctl(bd->fd, BIOCSETIF, (caddr_t)&ifr) < 0)
{
- errorStr = bd->iface + " BIOCSETIF " + string(strerror(errno));
+ errorStr = bd->iface + " BIOCSETIF " + std::string(strerror(errno));
+ logger("ioctl (BIOCSETIF) error for interface '%s': %s", bd->iface.c_str(), strerror(errno));
printfd(__FILE__, "ioctl failed: '%s'\n", errorStr.c_str());
return -1;
}
-//if (ioctl(cd[n].fd, BIOCIMMEDIATE, &im) < 0 )
if (ioctl(bd->fd, BIOCIMMEDIATE, &im) < 0)
{
- errorStr = bd->iface + " BIOCIMMEDIATE " + string(strerror(errno));
+ errorStr = bd->iface + " BIOCIMMEDIATE " + std::string(strerror(errno));
+ logger("ioctl (BIOCIMMEDIATE) error for interface '%s': %s", bd->iface.c_str(), strerror(errno));
printfd(__FILE__, "ioctl failed: '%s'\n", errorStr.c_str());
return -1;
}
return bd->fd;
-//return 0;
}
//-----------------------------------------------------------------------------
int BPF_CAP::BPFCapClose()
{
for (unsigned int i = 0; i < bpfData.size(); i++)
- close(bpfData[i].fd);
+ close(bpfData[i].fd);
return 0;
}
//-----------------------------------------------------------------------------
{
if (polld[i].revents & POLLIN)
{
- BPFCapRead(buffer, blen, capIface, &bpfData[i]);
+ if (BPFCapRead(buffer, blen, capIface, &bpfData[i]))
+ {
+ polld[i].revents = 0;
+ continue;
+ }
polld[i].revents = 0;
return 0;
}
}
-return 0;
+return -1;
}
//-----------------------------------------------------------------------------
int BPF_CAP::BPFCapRead(char * buffer, int blen, char **, BPF_DATA * bd)
bd->r = read(bd->fd, bd->buffer, BUFF_LEN);
if (bd->r < 0)
{
- //printfd(__FILE__, " error read\n");
- usleep(20000);
+ logger("read error: %s", strerror(errno));
+ struct timespec ts = {0, 20000000};
+ nanosleep(&ts, NULL);
+ return -1;
}
bd->p = bd->buffer;
if(bd->r > bd->sum)
{
memcpy(buffer, (char*)(bd->p) + bd->bh->bh_hdrlen, blen);
- //strncpy(iface, settings->iface[n], 9);
- //*iface = settings->iface[n];
bd->sum += BPF_WORDALIGN(bd->bh->bh_hdrlen + bd->bh->bh_caplen);
bd->p = bd->p + BPF_WORDALIGN(bd->bh->bh_hdrlen + bd->bh->bh_caplen);
return 0;
}
//-----------------------------------------------------------------------------
-
git.stg.codes / stg.git / blobdiff