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'capture'에 해당되는 글 3건

  1. 2016.09.20 Java JNetPcap Library Packet Capture
  2. 2016.03.07 Winpcap Test 05
  3. 2013.11.06 android-screenshot-library

Java JNetPcap Library Packet Capture

Programming/JNetPcap 2016. 9. 20. 13:46 Posted by TanSanC
336x280(권장), 300x250(권장), 250x250, 200x200 크기의 광고 코드만 넣을 수 있습니다.

Java JNetPcap Library Packet Capture 


pcap File




테스트 환경 : Win7 64bit, Eclipse, Java 1.8



이클립스와


자바는 설치되어있다고 가정합니다.





JNetPcap 라이브러리 다운로드


http://jnetpcap.com/download



저는 x84_64



압축을 풀면





jnetpcap.jar, jnetpcap.dll



두 개의 파일이 보입니다.



1. jnetpcap.jar 은 Eclipse 프로젝트에서 참조 할 수 있도록






Package Explorer > Properties > Java Build Path > Libraries > Add JARs 나 Add External JARs 로 추가하여 줍니다.



다운받은 경로보다는


해당 프로젝트 Eclipse Workspace 내에 두는것을 추천합니다.




한글 경로 때문에 안되는 경우도 있습니다,



2. jnetpcap.dll





C:\Windows\System32 경로에 jnetpcap.dll 파일을 복사하여 줍니다.









이제 설정은 끝났습니다.




테스트 코드는 다음과 같습니다.










import java.io.File;
import java.nio.ByteBuffer;
import java.util.ArrayList;
import java.util.List;

import org.jnetpcap.ByteBufferHandler;
import org.jnetpcap.Pcap;
import org.jnetpcap.PcapDumper;
import org.jnetpcap.PcapHeader;
import org.jnetpcap.PcapIf;

public class Test1 {
	public static void main(String[] args) {
		// pcap.loop(x, dumpHandler, dumper); x 개 패킷을
		// String ofile = "tmp-capture-file.cap"; tmp-capture-file.cap 파일로 저장


		List alldevs = new ArrayList(); // Will be filled with
														// NICs
		StringBuilder errbuf = new StringBuilder(); // For any error msgs

		/***************************************************************************
		 * First get a list of devices on this system
		 **************************************************************************/
		int r = Pcap.findAllDevs(alldevs, errbuf);
		if (r == Pcap.NOT_OK || alldevs.isEmpty()) {
			System.err.printf("Can't read list of devices, error is %s\n", errbuf.toString());
			return;
		}
		PcapIf device = alldevs.get(0); // We know we have atleast 1 device

		/***************************************************************************
		 * Second we open up the selected device
		 **************************************************************************/
		int snaplen = 64 * 1024; // Capture all packets, no trucation
		int flags = Pcap.MODE_PROMISCUOUS; // capture all packets
		int timeout = 10 * 1000; // 10 seconds in millis
		Pcap pcap = Pcap.openLive(device.getName(), snaplen, flags, timeout, errbuf);
		if (pcap == null) {
			System.err.printf("Error while opening device for capture: %s\n", errbuf.toString());
			return;
		}

		/***************************************************************************
		 * Third we create a PcapDumper and associate it with the pcap capture
		 ***************************************************************************/
		String ofile = "tmp-capture-file.cap";
		PcapDumper dumper = pcap.dumpOpen(ofile); // output file

		/***************************************************************************
		 * Fouth we create a packet handler which receives packets and tells the
		 * dumper to write those packets to its output file
		 **************************************************************************/
		ByteBufferHandler dumpHandler = new ByteBufferHandler() {

			public void nextPacket(PcapHeader arg0, ByteBuffer arg1, PcapDumper arg2) {
				// TODO Auto-generated method stub
				dumper.dump(arg0, arg1);
			}
		};

		/***************************************************************************
		 * Fifth we enter the loop and tell it to capture 10 packets. We pass in
		 * the dumper created in step 3
		 **************************************************************************/
		pcap.loop(10, dumpHandler, dumper);

		File file = new File(ofile);
		System.out.printf("%s file has %d bytes in it!\n", ofile, file.length());

		/***************************************************************************
		 * Last thing to do is close the dumper and pcap handles
		 **************************************************************************/
		dumper.close(); // Won't be able to delete without explicit close
		pcap.close();

		if (file.exists()) {
			// file.delete(); // Cleanup
		}	
	}
}


'Programming > JNetPcap' 카테고리의 다른 글

Java JNetPcap Library Packet Analytics  (0) 2016.09.20

Winpcap Test 05

Programming/C,CPP,CS 2016. 3. 7. 09:56 Posted by TanSanC
336x280(권장), 300x250(권장), 250x250, 200x200 크기의 광고 코드만 넣을 수 있습니다.

Winpcap Test 04 의  pcap_loop() 대신에 pcap_next_ex()  를 활용해본다.




 

/*

* Copyright (c) 1999 - 2005 NetGroup, Politecnico di Torino (Italy)

* Copyright (c) 2005 - 2006 CACE Technologies, Davis (California)

* All rights reserved.

*

* Redistribution and use in source and binary forms, with or without

* modification, are permitted provided that the following conditions

* are met:

*

* 1. Redistributions of source code must retain the above copyright

* notice, this list of conditions and the following disclaimer.

* 2. Redistributions in binary form must reproduce the above copyright

* notice, this list of conditions and the following disclaimer in the

* documentation and/or other materials provided with the distribution.

* 3. Neither the name of the Politecnico di Torino, CACE Technologies 

* nor the names of its contributors may be used to endorse or promote 

* products derived from this software without specific prior written 

* permission.

*

* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

*

*/


#include <stdio.h>


#include "pcap.h"


#ifndef WIN32

#include <sys/socket.h>

#include <netinet/in.h>

#else

#include <winsock.h>

#endif



// Function prototypes

void ifprint(pcap_if_t *d);

char *iptos(u_long in);

char* ip6tos(struct sockaddr *sockaddr, char *address, int addrlen);

void packet_handler(u_char *param, const struct pcap_pkthdr *header, const u_char *pkt_data);



int main()

{

pcap_if_t *alldevs;

pcap_if_t *d;

char errbuf[PCAP_ERRBUF_SIZE+1];

char source[PCAP_ERRBUF_SIZE+1] = {'0'};

int inum;

int i = 0;

// Winpcap Test 05

struct pcap_pkthdr *header;

int res;

struct tm ltime;

char timestr[16];

const u_char *pkt_data;

time_t local_tv_sec;



pcap_t *adhandle;



if (pcap_findalldevs_ex(source, NULL, &alldevs, errbuf) == -1)

{

fprintf(stderr,"Error in pcap_findalldevs: %s\n",errbuf);

exit(1);

}


/* Scan the list printing every entry */

for(d=alldevs;d;d=d->next)

{

ifprint(d);

i++;

}


printf("Enter the interface number (1-%d):",i);

scanf_s("%d", &inum);



if(inum < 1 || inum > i)

{

printf("\nInterface number out of range.\n");

/* Free the device list */

pcap_freealldevs(alldevs);

return -1;

}


/* Jump to the selected adapter */

for(d=alldevs, i=0; i< inum-1 ;d=d->next, i++);





/* Open the device */

if ( (adhandle= pcap_open(d->name,          // name of the device

65536,            // portion of the packet to capture

// 65536 guarantees that the whole packet will be captured on all the link layers

PCAP_OPENFLAG_PROMISCUOUS,    // promiscuous mode

1000,             // read timeout

NULL,             // authentication on the remote machine

errbuf            // error buffer

) ) == NULL)

{

fprintf(stderr,"\nUnable to open the adapter. %s is not supported by WinPcap\n", d->name);

/* Free the device list */

pcap_freealldevs(alldevs);

return -1;

}


printf("\nlistening on %s...\n", d->description);


/* At this point, we don't need any more the device list. Free it */

pcap_freealldevs(alldevs);

// Winpcap Test 05

    /* Retrieve the packets */

    while((res = pcap_next_ex( adhandle, &header, &pkt_data)) >= 0){

        

        if(res == 0)

            /* Timeout elapsed */

            continue;

        

        /* convert the timestamp to readable format */

        local_tv_sec = header->ts.tv_sec;

        localtime_s(&ltime, &local_tv_sec);

        strftime( timestr, sizeof timestr, "%H:%M:%S", &ltime);

        

        printf("%s,%.6d len:%d\n", timestr, header->ts.tv_usec, header->len);

    }

    

    if(res == -1){

        printf("Error reading the packets: %s\n", pcap_geterr(adhandle));

        return -1;

    }


return 1;

}




/* Print all the available information on the given interface */

void ifprint(pcap_if_t *d)

{

pcap_addr_t *a;

char ip6str[128];


/* Name */

printf("\tName: %s\n",d->name);


/* Description */

if (d->description)

printf("\tDescription: %s\n",d->description);


/* Loopback Address*/

printf("\tLoopback: %s\n",(d->flags & PCAP_IF_LOOPBACK)?"yes":"no");


/* IP addresses */

for(a=d->addresses;a;a=a->next) {

if(a->addr->sa_family != AF_INET)

continue;


printf("\tAddress Family Name: AF_INET\n");

if (a->addr)

printf("\tAddress: %s\n",iptos(((struct sockaddr_in *)a->addr)->sin_addr.s_addr));

if (a->netmask)

printf("\tNetmask: %s\n",iptos(((struct sockaddr_in *)a->netmask)->sin_addr.s_addr));

if (a->broadaddr)

printf("\tBroadcast Address: %s\n",iptos(((struct sockaddr_in *)a->broadaddr)->sin_addr.s_addr));

if (a->dstaddr)

printf("\tDestination Address: %s\n",iptos(((struct sockaddr_in *)a->dstaddr)->sin_addr.s_addr));

}

printf("\n");

}




/* From tcptraceroute, convert a numeric IP address to a string */

#define IPTOSBUFFERS    12

char *iptos(u_long in)

{

static char output[IPTOSBUFFERS][3*4+3+1];

static short which;

u_char *p;


p = (u_char *)&in;

which = (which + 1 == IPTOSBUFFERS ? 0 : which + 1);

_snprintf_s(output[which], sizeof(output[which]), sizeof(output[which]),"%d.%d.%d.%d", p[0], p[1], p[2], p[3]);

return output[which];

}


char* ip6tos(struct sockaddr *sockaddr, char *address, int addrlen)

{

socklen_t sockaddrlen;


#ifdef WIN32

sockaddrlen = sizeof(struct sockaddr_in6);

#else

sockaddrlen = sizeof(struct sockaddr_storage);

#endif



if(getnameinfo(sockaddr, 

sockaddrlen, 

address, 

addrlen, 

NULL, 

0, 

NI_NUMERICHOST) != 0) address = NULL;


return address;

}


/* Callback function invoked by libpcap for every incoming packet */

void packet_handler(u_char *param, const struct pcap_pkthdr *header, const u_char *pkt_data)

{

struct tm ltime;

char timestr[16];

time_t local_tv_sec;


/*

* unused variables

*/

(VOID)(param);

(VOID)(pkt_data);


/* convert the timestamp to readable format */

local_tv_sec = header->ts.tv_sec;

localtime_s(&ltime, &local_tv_sec);

strftime( timestr, sizeof timestr, "%H:%M:%S", &ltime);


printf("%s,%.6d len:%d\n", timestr, header->ts.tv_usec, header->len);


}


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Winpcap Test 02  (0) 2016.03.07

android-screenshot-library

Programming/Android 2013. 11. 6. 19:15 Posted by TanSanC
336x280(권장), 300x250(권장), 250x250, 200x200 크기의 광고 코드만 넣을 수 있습니다.

android-screenshot-library 제대로 사용하기

http://code.google.com/p/android-screenshot-library/downloads/list


asl-1.2.zipAndroid Screenshot Library 1.2   Featured




내부 코드가 진저브레드 이전 버전으로 되어있어서


network on main thread Exception 이 발생한다.