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[stg.git] / projects / stargazer / plugins / capture / divert_freebsd / divert_cap.cpp

diff --git a/projects/stargazer/plugins/capture/divert_freebsd/divert_cap.cpp b/projects/stargazer/plugins/capture/divert_freebsd/divert_cap.cpp
index 2bc83cad4f03042e0daba9e5407606a55a53cc6b..289846869a4bb2d4b8e2116e548ff08a065120f7 100644 (file)
--- a/projects/stargazer/plugins/capture/divert_freebsd/divert_cap.cpp
+++ b/projects/stargazer/plugins/capture/divert_freebsd/divert_cap.cpp
@@ -22,93 +22,70 @@
 $Revision: 1.13 $
 $Date: 2010/09/10 06:43:03 $
 */
 $Revision: 1.13 $
 $Date: 2010/09/10 06:43:03 $
 */

-#include <stdio.h>
+
+#include "divert_cap.h"
+
+#include "stg/traffcounter.h"
+#include "stg/raw_ip_packet.h"
+#include "stg/common.h"
+
+#include <algorithm>
+#include <vector>
+
+#include <cstdio>
+#include <cstring>
+#include <cerrno>
+#include <cstdlib>
+#include <csignal>
+

 #include <sys/types.h>
 #include <sys/socket.h>
 #include <netinet/in.h>
 #include <sys/types.h>
 #include <sys/socket.h>
 #include <netinet/in.h>

-#include <string.h>

 
 #include <sys/uio.h>
 #include <sys/time.h>
 #include <sys/ioctl.h>
 #include <sys/poll.h>
 
 
 #include <sys/uio.h>
 #include <sys/time.h>
 #include <sys/ioctl.h>
 #include <sys/poll.h>
 

-#include <errno.h>

 #include <fcntl.h>
 #include <fcntl.h>

-#include <stdlib.h>
-#include <signal.h>

 #include <unistd.h>
 
 #include <unistd.h>
 

-#include "common.h"
-#include "divert_cap.h"
-

 #define BUFF_LEN (16384) /* max mtu -> lo=16436  TODO why?*/
 
 //-----------------------------------------------------------------------------
 struct DIVERT_DATA {
 int sock;
 short int port;
 #define BUFF_LEN (16384) /* max mtu -> lo=16436  TODO why?*/
 
 //-----------------------------------------------------------------------------
 struct DIVERT_DATA {
 int sock;
 short int port;

-unsigned char buffer[BUFF_LEN];

 char iface[10];
 };
 //-----------------------------------------------------------------------------
 pollfd pollddiv;
 DIVERT_DATA cddiv;  //capture data
 //-----------------------------------------------------------------------------
 char iface[10];
 };
 //-----------------------------------------------------------------------------
 pollfd pollddiv;
 DIVERT_DATA cddiv;  //capture data
 //-----------------------------------------------------------------------------

-class DIVERT_CAP_CREATOR {
-private:
-    DIVERT_CAP * divc;
-
-public:
-    DIVERT_CAP_CREATOR()
-        : divc(new DIVERT_CAP())
-        {
-        };
-    ~DIVERT_CAP_CREATOR()
-        {
-        delete divc;
-        };
-
-    DIVERT_CAP * GetCapturer()
-    {
-    return divc;
-    };
-};
-//-----------------------------------------------------------------------------
-//-----------------------------------------------------------------------------

 //-----------------------------------------------------------------------------
 //-----------------------------------------------------------------------------

-DIVERT_CAP_CREATOR dcc;

 //-----------------------------------------------------------------------------
 //-----------------------------------------------------------------------------

-//-----------------------------------------------------------------------------
-//-----------------------------------------------------------------------------
-PLUGIN * GetPlugin()
+
+extern "C" STG::Plugin* GetPlugin()

 {
 {

-return dcc.GetCapturer();
+    static DIVERT_CAP plugin;
+    return &plugin;

 }
 //-----------------------------------------------------------------------------
 //-----------------------------------------------------------------------------
 //-----------------------------------------------------------------------------
 }
 //-----------------------------------------------------------------------------
 //-----------------------------------------------------------------------------
 //-----------------------------------------------------------------------------

-const std::string DIVERT_CAP::GetVersion() const
+std::string DIVERT_CAP::GetVersion() const

 {
 {

-return "Divert_cap v.1.0";
+return "cap_divert v.1.0";

 }
 //-----------------------------------------------------------------------------
 DIVERT_CAP::DIVERT_CAP()
     : port(0),
 }
 //-----------------------------------------------------------------------------
 DIVERT_CAP::DIVERT_CAP()
     : port(0),

+      disableForwarding(false),

       nonstop(false),
       isRunning(false),
       nonstop(false),
       isRunning(false),

-      traffCnt(NULL)
-{
-}
-//-----------------------------------------------------------------------------
-void DIVERT_CAP::SetTraffcounter(TRAFFCOUNTER * tc)
-{
-traffCnt = tc;
-}
-//-----------------------------------------------------------------------------
-const std::string & DIVERT_CAP::GetStrError() const
+      traffCnt(NULL),
+      logger(STG::PluginLogger::get("cap_divert"))

 {
 {

-return errorStr;

 }
 //-----------------------------------------------------------------------------
 int DIVERT_CAP::Start()
 }
 //-----------------------------------------------------------------------------
 int DIVERT_CAP::Start()


@@ -125,14 +102,15 @@ if (DivertCapOpen() < 0)
 
 nonstop = true;
 
 
 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 DIVERT_CAP::Stop()
 }
 //-----------------------------------------------------------------------------
 int DIVERT_CAP::Stop()


@@ -151,7 +129,8 @@ for (i = 0; i < 25; i++)
     if (!isRunning)
         break;
 
     if (!isRunning)
         break;
 

-    usleep(200000);
+    struct timespec ts = {0, 200000000};
+    nanosleep(&ts, NULL);

     }
 
 //after 5 seconds waiting thread still running. now killing it
     }
 
 //after 5 seconds waiting thread still running. now killing it


@@ -160,6 +139,7 @@ if (isRunning)
     if (pthread_kill(thread, SIGINT))
         {
         errorStr = "Cannot kill thread.";
     if (pthread_kill(thread, SIGINT))
         {
         errorStr = "Cannot kill thread.";

+        logger("Cannot send signal to thread.");

         printfd(__FILE__, "Cannot kill thread\n");
         return -1;
         }
         printfd(__FILE__, "Cannot kill thread\n");
         return -1;
         }


@@ -168,74 +148,33 @@ if (isRunning)
 return 0;
 }
 //-----------------------------------------------------------------------------
 return 0;
 }
 //-----------------------------------------------------------------------------

-bool DIVERT_CAP::IsRunning()
-{
-return isRunning;
-}
-//-----------------------------------------------------------------------------

 void * DIVERT_CAP::Run(void * d)
 {
 void * DIVERT_CAP::Run(void * d)
 {

-DIVERT_CAP * dc = (DIVERT_CAP *)d;
-dc->isRunning = true;
-
-/*struct ETH_IP
-{
-uint16_t    ethHdr[8];
-RAW_PACKET  rp;
-char        padding[4];
-char        padding1[8];
-};
-
-ETH_IP * ethIP;
+sigset_t signalSet;
+sigfillset(&signalSet);
+pthread_sigmask(SIG_BLOCK, &signalSet, NULL);

 
 

-char ethip[sizeof(ETH_IP)];
-
-//memset(&ethIP, 0, sizeof(ethIP));
-memset(&ethip, 0, sizeof(ETH_IP));
+DIVERT_CAP * dc = static_cast<DIVERT_CAP *>(d);
+dc->isRunning = true;

 
 

-ethIP = (ETH_IP *)&ethip;
-ethIP->rp.dataLen = -1;
-*/
-//char * iface = NULL;
-char buffer[64];
+char buffer[STG::packetSize + 14];

 while (dc->nonstop)
     {
 while (dc->nonstop)
     {

-    RAW_PACKET rp;
-    dc->DivertCapRead(buffer, 64, NULL);
-
-    //printf("%x %x %x %x \n", buffer[0], buffer[4], buffer[8], buffer[12]);
-    //printf("%x %x %x %x \n", buffer[16], buffer[20], buffer[24], buffer[28]);
-    //printf("%x %x %x %x \n", buffer[32], buffer[36], buffer[40], buffer[44]);
+    STG::RawPacket rp;
+    dc->DivertCapRead(buffer, sizeof(buffer), NULL);

 
     if (buffer[12] != 0x8)
         continue;
 
 
     if (buffer[12] != 0x8)
         continue;
 

-    memcpy(rp.pckt, &buffer[14], pcktSize);
+    memcpy(&rp.rawPacket, &buffer[14], STG::packetSize);

 
 

-    //dc->traffCnt->Process(*((RAW_PACKET*)( &buffer[14] ))); // - too dirty!
-    dc->traffCnt->Process(rp);
+    dc->traffCnt->process(rp);

     }
 
 dc->isRunning = false;
 return NULL;
 }
 //-----------------------------------------------------------------------------
     }
 
 dc->isRunning = false;
 return NULL;
 }
 //-----------------------------------------------------------------------------

-uint16_t DIVERT_CAP::GetStartPosition() const
-{
-return 10;
-}
-//-----------------------------------------------------------------------------
-uint16_t DIVERT_CAP::GetStopPosition() const
-{
-return 10;
-}
-//-----------------------------------------------------------------------------
-/*****************************************************************************/
-/*****************************************************************************/
-/*****************************************************************************/
-/*****************************************************************************/
-/*****************************************************************************/
-//-----------------------------------------------------------------------------

 int DIVERT_CAP::DivertCapOpen()
 {
 memset(&pollddiv, 0, sizeof(pollddiv));
 int DIVERT_CAP::DivertCapOpen()
 {
 memset(&pollddiv, 0, sizeof(pollddiv));


@@ -258,6 +197,7 @@ cddiv.sock = socket(PF_INET, SOCK_RAW, IPPROTO_DIVERT);
 if (cddiv.sock < 0)
     {
     errorStr = "Create divert socket error.";
 if (cddiv.sock < 0)
     {
     errorStr = "Create divert socket error.";

+    logger("Cannot create a socket: %s", strerror(errno));

     printfd(__FILE__, "Cannot create divert socket\n");
     return -1;
     }
     printfd(__FILE__, "Cannot create divert socket\n");
     return -1;
     }


@@ -275,6 +215,7 @@ ret = bind(cddiv.sock, (struct sockaddr *)&divAddr, sizeof(divAddr));
 if (ret < 0)
     {
     errorStr = "Bind divert socket error.";
 if (ret < 0)
     {
     errorStr = "Bind divert socket error.";

+    logger("Cannot bind the scoket: %s", strerror(errno));

     printfd(__FILE__, "Cannot bind divert socket\n");
     return -1;
     }
     printfd(__FILE__, "Cannot bind divert socket\n");
     return -1;
     }


@@ -312,7 +253,16 @@ if ((bytes = recvfrom (cddiv.sock, buf, BUFF_LEN,
     if (iface)
         *iface = cddiv.iface;
 
     if (iface)
         *iface = cddiv.iface;
 

-    sendto(cddiv.sock, buf, bytes, 0, (struct sockaddr*)&divertaddr, divertaddrSize);
+    if (!disableForwarding)
+        {
+        if (sendto(cddiv.sock, buf, bytes, 0, (struct sockaddr*)&divertaddr, divertaddrSize) < 0)
+            logger("sendto error: %s", strerror(errno));
+        }
+    }
+else
+    {
+    if (bytes < 0)
+        logger("recvfrom error: %s", strerror(errno));

     }
 
 return 0;
     }
 
 return 0;


@@ -327,18 +277,16 @@ return 0;
 int DIVERT_CAP::ParseSettings()
 {
 int p;
 int DIVERT_CAP::ParseSettings()
 {
 int p;

-PARAM_VALUE pv;
-vector<PARAM_VALUE>::const_iterator pvi;
+STG::ParamValue pv;
+std::vector<STG::ParamValue>::const_iterator pvi;

 
 pv.param = "Port";
 
 pv.param = "Port";

-pvi = find(settings.moduleParams.begin(), settings.moduleParams.end(), pv);
-if (pvi == settings.moduleParams.end())
+pvi = std::find(settings.moduleParams.begin(), settings.moduleParams.end(), pv);
+if (pvi == settings.moduleParams.end() || pvi->value.empty())

     {
     {

-    port = 15701;
-    return 0;
+    p = 15701;

     }
     }

-
-if (ParseIntInRange(pvi->value[0], 1, 65535, &p))
+else if (ParseIntInRange(pvi->value[0], 1, 65535, &p))

     {
     errorStr = "Cannot parse parameter \'Port\': " + errorStr;
     printfd(__FILE__, "Cannot parse parameter 'Port'\n");
     {
     errorStr = "Cannot parse parameter \'Port\': " + errorStr;
     printfd(__FILE__, "Cannot parse parameter 'Port'\n");


@@ -347,27 +295,22 @@ if (ParseIntInRange(pvi->value[0], 1, 65535, &p))
 
 port = p;
 
 
 port = p;
 

-return 0;
-}
-//-----------------------------------------------------------------------------
-int DIVERT_CAP::ParseIntInRange(const std::string & str, int min, int max, int * val)
-{
-if (str2x(str.c_str(), *val))
+bool d = false;
+pv.param = "DisableForwarding";
+pvi = std::find(settings.moduleParams.begin(), settings.moduleParams.end(), pv);
+if (pvi == settings.moduleParams.end() || pvi->value.empty())

     {
     {

-    errorStr = "Incorrect value \'" + str + "\'.";
-    return -1;
+    disableForwarding = false;

     }
     }

-if (*val < min || *val > max)
+else if (ParseYesNo(pvi->value[0], &d))

     {
     {

-    errorStr = "Value \'" + str + "\' out of range.";
+    errorStr = "Cannot parse parameter \'DisableForwarding\': " + errorStr;
+    printfd(__FILE__, "Cannot parse parameter 'DisableForwarding'\n");

     return -1;
     }
     return -1;
     }

+
+disableForwarding = d;
+

 return 0;
 }
 //-----------------------------------------------------------------------------
 return 0;
 }
 //-----------------------------------------------------------------------------

-void DIVERT_CAP::SetSettings(const MODULE_SETTINGS & s)
-{
-settings = s;
-}
-//-----------------------------------------------------------------------------
-