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CGH0S7
2025-12-25 14:33:29 +08:00
parent ac5b4bc15d
commit 200566e8fe
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183
network/arpicmplab/start/lib/npcap/Examples-remote/tcptop/tcptop.c Normal file
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/*
* 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 <stdlib.h>
#include <stdio.h>
#include <pcap.h>
#include <tchar.h>
BOOL LoadNpcapDlls()
{
_TCHAR npcap_dir[512];
UINT len;
len = GetSystemDirectory(npcap_dir, 480);
if (!len) {
fprintf(stderr, "Error in GetSystemDirectory: %x", GetLastError());
return FALSE;
}
_tcscat_s(npcap_dir, 512, _T("\\Npcap"));
if (SetDllDirectory(npcap_dir) == 0) {
fprintf(stderr, "Error in SetDllDirectory: %x", GetLastError());
return FALSE;
}
return TRUE;
}
void usage();
void dispatcher_handler(u_char *, const struct pcap_pkthdr *, const u_char *);
void main(int argc, char **argv)
{
pcap_t *fp;
char errbuf[PCAP_ERRBUF_SIZE];
struct timeval st_ts;
u_int netmask;
struct bpf_program fcode;
/* Load Npcap and its functions. */
if (!LoadNpcapDlls())
{
fprintf(stderr, "Couldn't load Npcap\n");
exit(1);
}
/* Check the validity of the command line */
if (argc != 2)
{
usage();
return;
}
/* Open the output adapter */
if ( (fp= pcap_open(argv[1], 100, PCAP_OPENFLAG_PROMISCUOUS, 1000, NULL, errbuf) ) == NULL)
{
fprintf(stderr,"\nUnable to open adapter %s.\n", errbuf);
return;
}
/* Don't care about netmask, it won't be used for this filter */
netmask=0xffffff;
//compile the filter
if (pcap_compile(fp, &fcode, "tcp", 1, netmask) <0 )
{
fprintf(stderr,"\nUnable to compile the packet filter. Check the syntax.\n");
/* Free the device list */
return;
}
//set the filter
if (pcap_setfilter(fp, &fcode)<0)
{
fprintf(stderr,"\nError setting the filter.\n");
pcap_close(fp);
/* Free the device list */
return;
}
/* Put the interface in statstics mode */
if (pcap_setmode(fp, MODE_STAT)<0)
{
fprintf(stderr,"\nError setting the mode.\n");
pcap_close(fp);
/* Free the device list */
return;
}
printf("TCP traffic summary:\n");
/* Start the main loop */
pcap_loop(fp, 0, dispatcher_handler, (PUCHAR)&st_ts);
pcap_close(fp);
return;
}
void dispatcher_handler(u_char *state, const struct pcap_pkthdr *header, const u_char *pkt_data)
{
struct timeval *old_ts = (struct timeval *)state;
u_int delay;
LARGE_INTEGER Bps,Pps;
struct tm ltime;
char timestr[16];
time_t local_tv_sec;
/* Calculate the delay in microseconds from the last sample. */
/* This value is obtained from the timestamp that the associated with the sample. */
delay=(header->ts.tv_sec - old_ts->tv_sec) * 1000000 - old_ts->tv_usec + header->ts.tv_usec;
/* Get the number of Bits per second */
Bps.QuadPart=(((*(LONGLONG*)(pkt_data + 8)) * 8 * 1000000) / (delay));
/* ^ ^
| |
| |
| |
converts bytes in bits -- |
|
delay is expressed in microseconds --
*/
/* Get the number of Packets per second */
Pps.QuadPart=(((*(LONGLONG*)(pkt_data)) * 1000000) / (delay));
/* 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);
/* Print timestamp*/
printf("%s ", timestr);
/* Print the samples */
printf("BPS=%I64u ", Bps.QuadPart);
printf("PPS=%I64u\n", Pps.QuadPart);
//store current timestamp
old_ts->tv_sec=header->ts.tv_sec;
old_ts->tv_usec=header->ts.tv_usec;
}
void usage()
{
printf("\nShows the TCP traffic load, in bits per second and packets per second.\nCopyright (C) 2002 Loris Degioanni.\n");
printf("\nUsage:\n");
printf("\t tcptop adapter\n");
printf("\t You can use \"WinDump -D\" if you don't know the name of your adapters.\n");
exit(0);
}

143
network/arpicmplab/start/lib/npcap/Examples-remote/tcptop/tcptop.vcxproj Normal file
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