X-Git-Url: https://git.stg.codes/stg.git/blobdiff_plain/ede91934442fd804d7b818971a44e3ad795cb01f..c949afc4f9940c71c63ce6dda771eb32e6fd8c65:/projects/stargazer/plugins/capture/ipq_linux/ipq_cap.cpp?ds=sidebyside

diff --git a/projects/stargazer/plugins/capture/ipq_linux/ipq_cap.cpp b/projects/stargazer/plugins/capture/ipq_linux/ipq_cap.cpp
index fbf35894..18696ec2 100644
--- a/projects/stargazer/plugins/capture/ipq_linux/ipq_cap.cpp
+++ b/projects/stargazer/plugins/capture/ipq_linux/ipq_cap.cpp
@@ -1,52 +1,64 @@
-#include <signal.h>
-#include <cerrno>
+/*
+ *    This program is free software; you can redistribute it and/or modify
+ *    it under the terms of the GNU General Public License as published by
+ *    the Free Software Foundation; either version 2 of the License, or
+ *    (at your option) any later version.
+ *
+ *    This program is distributed in the hope that it will be useful,
+ *    but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *    GNU General Public License for more details.
+ *
+ *    You should have received a copy of the GNU General Public License
+ *    along with this program; if not, write to the Free Software
+ *    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+/*
+* Author : Boris Mikhailenko <stg34@stargazer.dp.ua>
+*/
+
 #include <netinet/in.h>
 #include <linux/netfilter.h>
 
+#include <csignal>
+#include <cerrno>
+#include <cstring>
+
+#include "stg/raw_ip_packet.h"
+#include "stg/traffcounter.h"
+#include "stg/plugin_creator.h"
+#include "stg/common.h"
+
 #include "ipq_cap.h"
-#include "raw_ip_packet.h"
 
 extern "C"
 {
 #include "libipq.h"
 }
 
-class IPQ_CAP_CREATOR {
-private:
-    IPQ_CAP * ic;
-
-public:
-    IPQ_CAP_CREATOR()
-        : ic(new IPQ_CAP())
-        {
-        };
-    ~IPQ_CAP_CREATOR()
-        {
-        delete ic;
-        };
-
-    IPQ_CAP * GetCapturer()
-        {
-        return ic;
-        };
-};
 //-----------------------------------------------------------------------------
 //-----------------------------------------------------------------------------
 //-----------------------------------------------------------------------------
-IPQ_CAP_CREATOR icc;
+namespace
+{
+PLUGIN_CREATOR<IPQ_CAP> icc;
+}
+
+extern "C" PLUGIN * GetPlugin();
 //-----------------------------------------------------------------------------
 //-----------------------------------------------------------------------------
 //-----------------------------------------------------------------------------
 PLUGIN * GetPlugin()
 {
-return icc.GetCapturer();
+return icc.GetPlugin();
 }
 //-----------------------------------------------------------------------------
 //-----------------------------------------------------------------------------
 //-----------------------------------------------------------------------------
-const std::string IPQ_CAP::GetVersion() const
+std::string IPQ_CAP::GetVersion() const
 {
-return "ipq_cap v.1.2";
+return "cap_ipq v.1.2";
 }
 //-----------------------------------------------------------------------------
 IPQ_CAP::IPQ_CAP()
@@ -54,21 +66,12 @@ IPQ_CAP::IPQ_CAP()
       nonstop(false),
       isRunning(false),
       capSock(-1),
-      traffCnt(NULL)
+      traffCnt(NULL),
+      logger(GetPluginLogger(GetStgLogger(), "cap_ipq"))
 {
 memset(buf, 0, BUFSIZE);
 }
 //-----------------------------------------------------------------------------
-void IPQ_CAP::SetTraffcounter(TRAFFCOUNTER * tc)
-{
-traffCnt = tc;
-}
-//-----------------------------------------------------------------------------
-const std::string & IPQ_CAP::GetStrError() const
-{
-return errorStr;
-}
-//-----------------------------------------------------------------------------
 int IPQ_CAP::Start()
 {
 if (isRunning)
@@ -99,7 +102,8 @@ for (int i = 0; i < 25; i++)
     {
     if (!isRunning)
         break;
-    usleep(200000);
+    struct timespec ts = {0, 200000000};
+    nanosleep(&ts, NULL);
     }
 //after 5 seconds waiting thread still running. now killing it
 if (isRunning)
@@ -111,7 +115,8 @@ if (isRunning)
         }
     for (int i = 0; i < 25 && isRunning; ++i)
         {
-        usleep(200000);
+        struct timespec ts = {0, 200000000};
+        nanosleep(&ts, NULL);
         }
     if (isRunning)
         {
@@ -126,23 +131,21 @@ IPQCapClose();
 return 0;
 }
 //-----------------------------------------------------------------------------
-bool IPQ_CAP::IsRunning()
-{
-return isRunning;
-}
-//-----------------------------------------------------------------------------
 void * IPQ_CAP::Run(void * d)
 {
+sigset_t signalSet;
+sigfillset(&signalSet);
+pthread_sigmask(SIG_BLOCK, &signalSet, NULL);
+
 RAW_PACKET raw_packet;
-int status;
 
-IPQ_CAP * dc = (IPQ_CAP *)d;
+IPQ_CAP * dc = static_cast<IPQ_CAP *>(d);
 dc->isRunning = true;
 memset(&raw_packet, 0, sizeof(raw_packet));
 raw_packet.dataLen = -1;
 while (dc->nonstop)
     {
-    status = dc->IPQCapRead(&raw_packet, 68);
+    int status = dc->IPQCapRead(&raw_packet, 68);
     if (status == -1 ||
         status == -2 ||
         status == -3 ||
@@ -154,31 +157,21 @@ dc->isRunning = false;
 return NULL;
 }
 //-----------------------------------------------------------------------------
-uint16_t IPQ_CAP::GetStartPosition() const
-{
-return 0;
-}
-//-----------------------------------------------------------------------------
-uint16_t IPQ_CAP::GetStopPosition() const
-{
-return 0;
-}
-//-----------------------------------------------------------------------------
 int IPQ_CAP::IPQCapOpen()
 {
-int status;
-
 ipq_h = ipq_create_handle(0, PF_INET);
 if (ipq_h == NULL)
     {
     ipq_destroy_handle(ipq_h);
+    logger("Cannot create IPQ handle. Error: '%s', '%s'", ipq_errstr(), strerror(errno));
     errorStr = "Cannot create ipq handle!";
     return -1;
     }
-status = ipq_set_mode(ipq_h, IPQ_COPY_PACKET, PAYLOAD_LEN);
+int status = ipq_set_mode(ipq_h, IPQ_COPY_PACKET, PAYLOAD_LEN);
 if (status < 0)
     {
     ipq_destroy_handle(ipq_h);
+    logger("Cannot set IPQ_COPY_PACKET mode.");
     errorStr = "Cannot set IPQ_COPY_PACKET mode!";
     return -1;
     }
@@ -193,11 +186,8 @@ return 0;
 //-----------------------------------------------------------------------------
 int IPQ_CAP::IPQCapRead(void * buffer, int blen)
 {
-int status;
-static ipq_packet_msg_t *m;
-
 memset(buf, 0, BUFSIZE);
-status = ipq_read(ipq_h, buf, BUFSIZE, 1);
+int status = ipq_read(ipq_h, buf, BUFSIZE, 1);
 if (status == 0)
     return -4;
 if (errno == EINTR)
@@ -206,7 +196,7 @@ if (status < 0)
     return -1;
 if (ipq_message_type(buf) != IPQM_PACKET)
     return -2;
-m = ipq_get_packet(buf);
+static ipq_packet_msg_t * m = ipq_get_packet(buf);
 memcpy(buffer, m->payload, blen);
 ipq_set_verdict(ipq_h, m->packet_id, NF_ACCEPT, 0, NULL);
 return 0;