X-Git-Url: https://git.stg.codes/stg.git/blobdiff_plain/f7163d9c994af13f0f72f49f7203b7ac3e281a1e..1cd2b12bd4e4d86f6cd099240795f3ebeb3852b3:/projects/stargazer/plugins/capture/ether_linux/ether_cap.cpp?ds=inline

diff --git a/projects/stargazer/plugins/capture/ether_linux/ether_cap.cpp b/projects/stargazer/plugins/capture/ether_linux/ether_cap.cpp
index bd075fee..3ac60d1f 100644
--- a/projects/stargazer/plugins/capture/ether_linux/ether_cap.cpp
+++ b/projects/stargazer/plugins/capture/ether_linux/ether_cap.cpp
@@ -27,55 +27,48 @@ $Revision: 1.23 $
 $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 "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
 
-//-----------------------------------------------------------------------------
-//-----------------------------------------------------------------------------
-//-----------------------------------------------------------------------------
-PLUGIN_CREATOR<ETHER_CAP> ecc;
-//-----------------------------------------------------------------------------
-//-----------------------------------------------------------------------------
-//-----------------------------------------------------------------------------
-PLUGIN * GetPlugin()
+extern "C" STG::Plugin* GetPlugin()
 {
-return ecc.GetPlugin();
+    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"))
 {
 }
 //-----------------------------------------------------------------------------
@@ -91,16 +84,9 @@ if (EthCapOpen() < 0)
     return -1;
     }
 
-nonstop = true;
+m_thread = std::jthread([this](auto token){ Run(std::move(token)); });
 
-if (pthread_create(&thread, NULL, Run, this) == 0)
-    {
-    return 0;
-    }
-
-errorStr = "Cannot create thread.";
-printfd(__FILE__, "Cannot create thread\n");
-return -1;
+return 0;
 }
 //-----------------------------------------------------------------------------
 int ETHER_CAP::Stop()
@@ -108,66 +94,52 @@ 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;
 }
 //-----------------------------------------------------------------------------
-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(&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;
 
-while (dc->nonstop)
+while (!token.stop_requested())
     {
-    if (dc->EthCapRead(&ethip, 68 + 14, &iface))
+    if (EthCapRead(&ethip, 68 + 14, &iface))
         {
         continue;
         }
@@ -175,16 +147,17 @@ while (dc->nonstop)
     if (ethIP->ethHdr[7] != 0x8)
         continue;
 
-    dc->traffCnt->Process(ethIP->rp);
+    traffCnt->process(ethIP->rp);
     }
 
-dc->isRunning = false;
-return NULL;
+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;
 }
 //-----------------------------------------------------------------------------
@@ -197,7 +170,7 @@ return 0;
 int ETHER_CAP::EthCapRead(void * buffer, int blen, char **)
 {
 struct sockaddr_ll  addr;
-int addrLen, res;
+socklen_t addrLen;
 
 if (!WaitPackets(capSock))
     {
@@ -206,44 +179,11 @@ 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, 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;
-}