Proper checks for libs.

[stg.git] / projects / stargazer / plugins / capture / ipq_linux / ipq_cap.cpp

diff --git a/projects/stargazer/plugins/capture/ipq_linux/ipq_cap.cpp b/projects/stargazer/plugins/capture/ipq_linux/ipq_cap.cpp
index fbf358948c2ae3fffb8d691f4799510a0e8dcd92..45ca9b1f76ce0fa1e461fe937a5f30768c7c91db 100644 (file)
--- a/projects/stargazer/plugins/capture/ipq_linux/ipq_cap.cpp
+++ b/projects/stargazer/plugins/capture/ipq_linux/ipq_cap.cpp
@@ -1,74 +1,80 @@
-#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 <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 "ipq_cap.h"

-#include "raw_ip_packet.h"

 
 extern "C"
 {
 #include "libipq.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()
 {
 //-----------------------------------------------------------------------------
 //-----------------------------------------------------------------------------
 //-----------------------------------------------------------------------------
 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()
     : ipq_h(NULL),
 }
 //-----------------------------------------------------------------------------
 IPQ_CAP::IPQ_CAP()
     : ipq_h(NULL),

+      errorStr(),
+      thread(),

       nonstop(false),
       isRunning(false),
       capSock(-1),
       nonstop(false),
       isRunning(false),
       capSock(-1),

-      traffCnt(NULL)
+      traffCnt(NULL),
+      buf(),
+      logger(GetPluginLogger(GetStgLogger(), "cap_ipq"))

 {
 memset(buf, 0, BUFSIZE);
 }
 //-----------------------------------------------------------------------------
 {
 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)
 int IPQ_CAP::Start()
 {
 if (isRunning)


@@ -99,7 +105,8 @@ for (int 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
 if (isRunning)
     }
 //after 5 seconds waiting thread still running. now killing it
 if (isRunning)


@@ -111,7 +118,8 @@ if (isRunning)
         }
     for (int i = 0; i < 25 && isRunning; ++i)
         {
         }
     for (int i = 0; i < 25 && isRunning; ++i)
         {

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

         }
     if (isRunning)
         {
         }
     if (isRunning)
         {


@@ -126,23 +134,21 @@ IPQCapClose();
 return 0;
 }
 //-----------------------------------------------------------------------------
 return 0;
 }
 //-----------------------------------------------------------------------------

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

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

+sigset_t signalSet;
+sigfillset(&signalSet);
+pthread_sigmask(SIG_BLOCK, &signalSet, NULL);
+

 RAW_PACKET raw_packet;
 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)
     {
 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 ||
     if (status == -1 ||
         status == -2 ||
         status == -3 ||


@@ -154,31 +160,21 @@ dc->isRunning = false;
 return NULL;
 }
 //-----------------------------------------------------------------------------
 return NULL;
 }
 //-----------------------------------------------------------------------------

-uint16_t IPQ_CAP::GetStartPosition() const
-{
-return 0;
-}
-//-----------------------------------------------------------------------------
-uint16_t IPQ_CAP::GetStopPosition() const
-{
-return 0;
-}
-//-----------------------------------------------------------------------------

 int IPQ_CAP::IPQCapOpen()
 {
 int IPQ_CAP::IPQCapOpen()
 {

-int status;
-

 ipq_h = ipq_create_handle(0, PF_INET);
 if (ipq_h == NULL)
     {
     ipq_destroy_handle(ipq_h);
 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;
     }
     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);
 if (status < 0)
     {
     ipq_destroy_handle(ipq_h);

+    logger("Cannot set IPQ_COPY_PACKET mode.");

     errorStr = "Cannot set IPQ_COPY_PACKET mode!";
     return -1;
     }
     errorStr = "Cannot set IPQ_COPY_PACKET mode!";
     return -1;
     }


@@ -193,11 +189,8 @@ return 0;
 //-----------------------------------------------------------------------------
 int IPQ_CAP::IPQCapRead(void * buffer, int blen)
 {
 //-----------------------------------------------------------------------------
 int IPQ_CAP::IPQCapRead(void * buffer, int blen)
 {

-int status;
-static ipq_packet_msg_t *m;
-

 memset(buf, 0, BUFSIZE);
 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)
 if (status == 0)
     return -4;
 if (errno == EINTR)


@@ -206,7 +199,7 @@ if (status < 0)
     return -1;
 if (ipq_message_type(buf) != IPQM_PACKET)
     return -2;
     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;
 memcpy(buffer, m->payload, blen);
 ipq_set_verdict(ipq_h, m->packet_id, NF_ACCEPT, 0, NULL);
 return 0;