Moved common initialization code to a separate class method.

[stg.git] / projects / stargazer / plugins / capture / ether_linux / ether_cap.cpp

diff --git a/projects/stargazer/plugins/capture/ether_linux/ether_cap.cpp b/projects/stargazer/plugins/capture/ether_linux/ether_cap.cpp
index 11aa475a48905e44d9447e1da7e4aeaf238a6f4f..fd83c48542b663028a7d202a10a36a43839c6ff6 100644 (file)
--- a/projects/stargazer/plugins/capture/ether_linux/ether_cap.cpp
+++ b/projects/stargazer/plugins/capture/ether_linux/ether_cap.cpp
@@ -32,83 +32,62 @@ $Date: 2009/12/13 13:45:13 $
 #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
+#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"
 
-//-----------------------------------------------------------------------------
-class ETHER_CAP_CREATOR
-{
-private:
-    ETHER_CAP * ec;
+#include "ether_cap.h"
 
-public:
-    ETHER_CAP_CREATOR()
-        : ec(new ETHER_CAP())
-        {
-        };
-    ~ETHER_CAP_CREATOR()
-        {
-        delete ec;
-        };
+//#define CAP_DEBUG 1
 
-    ETHER_CAP * GetCapturer()
-        {
-        return ec;
-        };
-};
 //-----------------------------------------------------------------------------
 //-----------------------------------------------------------------------------
 //-----------------------------------------------------------------------------
-ETHER_CAP_CREATOR ecc;
+namespace
+{
+PLUGIN_CREATOR<ETHER_CAP> ecc;
+}
+
+extern "C" PLUGIN * GetPlugin();
 //-----------------------------------------------------------------------------
 //-----------------------------------------------------------------------------
 //-----------------------------------------------------------------------------
-BASE_PLUGIN * GetPlugin()
+PLUGIN * GetPlugin()
 {
-return ecc.GetCapturer();
+return ecc.GetPlugin();
 }
 //-----------------------------------------------------------------------------
 //-----------------------------------------------------------------------------
-//-----------------------------------------------------------------------------        
-const 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),
+    : errorStr(),
+      thread(),
+      nonstop(false),
       isRunning(false),
       capSock(-1),
-      traffCnt(NULL)
+      traffCnt(NULL),
+      logger(GetPluginLogger(GetStgLogger(), "cap_ether"))
 {
 }
 //-----------------------------------------------------------------------------
-void ETHER_CAP::SetTraffcounter(TRAFFCOUNTER * tc)
-{
-traffCnt = tc;
-}
-//-----------------------------------------------------------------------------
-const string & ETHER_CAP::GetStrError() const
-{
-return errorStr;
-}
-//-----------------------------------------------------------------------------
 int ETHER_CAP::Start()
 {
 if (isRunning)
@@ -123,14 +102,15 @@ if (EthCapOpen() < 0)
 
 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 ETHER_CAP::Stop()
@@ -143,7 +123,8 @@ nonstop = false;
 //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)
@@ -151,13 +132,18 @@ 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)
-        usleep(200000);
+        {
+        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;
         }
@@ -171,14 +157,13 @@ EthCapClose();
 return 0;
 }
 //-----------------------------------------------------------------------------
-bool ETHER_CAP::IsRunning()
-{
-return isRunning;
-}
-//-----------------------------------------------------------------------------
 void * ETHER_CAP::Run(void * d)
 {
-ETHER_CAP * dc = (ETHER_CAP *)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
@@ -189,13 +174,11 @@ char        padding[4];
 char        padding1[8];
 };
 
-ETH_IP * ethIP;
-
 char ethip[sizeof(ETH_IP)];
 
 memset(&ethip, 0, sizeof(ETH_IP));
 
-ethIP = (ETH_IP *)&ethip;
+ETH_IP * ethIP = static_cast<ETH_IP *>(static_cast<void *>(&ethip));
 ethIP->rp.dataLen = -1;
 
 char * iface = NULL;
@@ -217,19 +200,11 @@ dc->isRunning = false;
 return NULL;
 }
 //-----------------------------------------------------------------------------
-uint16_t ETHER_CAP::GetStartPosition() const
-{
-return 10;
-}
-//-----------------------------------------------------------------------------
-uint16_t ETHER_CAP::GetStopPosition() const
-{
-return 10;
-}
-//-----------------------------------------------------------------------------
 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;
 }
 //-----------------------------------------------------------------------------
@@ -242,7 +217,7 @@ return 0;
 int ETHER_CAP::EthCapRead(void * buffer, int blen, char **)
 {
 struct sockaddr_ll  addr;
-int addrLen, res;
+int addrLen;
 
 if (!WaitPackets(capSock))
     {
@@ -251,44 +226,11 @@ 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, ((char*)buffer) + 2, blen, 0, (struct sockaddr *)&addr, (socklen_t*)&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;
-}