abc/lwip
1
0
Fork 0
mirror of https://git.savannah.nongnu.org/git/lwip.git synced 2026-08-08 00:23:39 +08:00
Code Issues Packages Projects Releases Wiki Activity

Moved tcpdump to unix arch since it's specific to that.

Browse Source
This commit is contained in:
jani
2002-12-18 10:48:51 +00:00
parent 4c1069c38b
commit 95c1bca3f1
1 changed files with 0 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

186
src/netif/tcpdump.c
View File

@@ -1,186 +0,0 @@
/*
* Copyright (c) 2001, 2002 Swedish Institute of Computer Science.
* 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. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*
* This file is part of the lwIP TCP/IP stack.
*
* Author: Adam Dunkels <adam@sics.se>
*
*/
#include <stdio.h>
#include "netif/tcpdump.h"
#include "lwip/ip.h"
#include "lwip/tcp.h"
#include "lwip/udp.h"
#include "lwip/inet.h"
static FILE *file = NULL;
/*-----------------------------------------------------------------------------------*/
void
tcpdump_init(void)
{
char *fname;
fname = "/tmp/tcpdump";
file = fopen(fname, "w");
if(file == NULL) {
perror("tcpdump_init: fopen");
}
DEBUGF(TCPDUMP_DEBUG, ("tcpdump: file %s\n", fname));
}
/*-----------------------------------------------------------------------------------*/
void
tcpdump(struct pbuf *p)
{
struct ip_hdr *iphdr;
struct tcp_hdr *tcphdr;
struct udp_hdr *udphdr;
char flags[5];
int i;
int len;
int offset;
if(file == NULL) {
return;
}
#ifdef IPv4
iphdr = p->payload;
switch(IPH_PROTO(iphdr)) {
case IP_PROTO_TCP:
tcphdr = (struct tcp_hdr *)((char *)iphdr + IP_HLEN);
pbuf_header(p, -IP_HLEN);
if(inet_chksum_pseudo(p, (struct ip_addr *)&(iphdr->src),
(struct ip_addr *)&(iphdr->dest),
IP_PROTO_TCP, p->tot_len) != 0) {
DEBUGF(TCPDUMP_DEBUG, ("tcpdump: IP checksum failed!\n"));
/* fprintf(file, "chksum 0x%lx ", tcphdr->chksum);
tcphdr->chksum = 0;
fprintf(file, "should be 0x%lx ", inet_chksum_pseudo(p, (struct ip_addr *)&(iphdr->src),
(struct ip_addr *)&(iphdr->dest),
IP_PROTO_TCP, p->tot_len));*/
fprintf(file, "!chksum ");
}
i = 0;
if(TCPH_FLAGS(tcphdr) & TCP_SYN) {
flags[i++] = 'S';
}
if(TCPH_FLAGS(tcphdr) & TCP_PSH) {
flags[i++] = 'P';
}
if(TCPH_FLAGS(tcphdr) & TCP_FIN) {
flags[i++] = 'F';
}
if(TCPH_FLAGS(tcphdr) & TCP_RST) {
flags[i++] = 'R';
}
if(i == 0) {
flags[i++] = '.';
}
flags[i++] = 0;
fprintf(file, "%d.%d.%d.%d.%u > %d.%d.%d.%d.%u: ",
(int)(ntohl(iphdr->src.addr) >> 24) & 0xff,
(int)(ntohl(iphdr->src.addr) >> 16) & 0xff,
(int)(ntohl(iphdr->src.addr) >> 8) & 0xff,
(int)(ntohl(iphdr->src.addr) >> 0) & 0xff,
ntohs(tcphdr->src),
(int)(ntohl(iphdr->dest.addr) >> 24) & 0xff,
(int)(ntohl(iphdr->dest.addr) >> 16) & 0xff,
(int)(ntohl(iphdr->dest.addr) >> 8) & 0xff,
(int)(ntohl(iphdr->dest.addr) >> 0) & 0xff,
ntohs(tcphdr->dest));
offset = TCPH_OFFSET(tcphdr) >> 4;
len = ntohs(IPH_LEN(iphdr)) - offset * 4 - IP_HLEN;
if(len != 0 || flags[0] != '.') {
fprintf(file, "%s %lu:%lu(%u) ",
flags,
ntohl(tcphdr->seqno),
ntohl(tcphdr->seqno) + len,
len);
}
if(TCPH_FLAGS(tcphdr) & TCP_ACK) {
fprintf(file, "ack %lu ",
ntohl(tcphdr->ackno));
}
fprintf(file, "wnd %u\n",
ntohs(tcphdr->wnd));
fflush(file);
pbuf_header(p, IP_HLEN);
break;
case IP_PROTO_UDP:
udphdr = (struct udp_hdr *)((char *)iphdr + IP_HLEN);
pbuf_header(p, -IP_HLEN);
if(inet_chksum_pseudo(p, (struct ip_addr *)&(iphdr->src),
(struct ip_addr *)&(iphdr->dest),
IP_PROTO_UDP, p->tot_len) != 0) {
DEBUGF(TCPDUMP_DEBUG, ("tcpdump: IP checksum failed!\n"));
/* fprintf(file, "chksum 0x%lx ", tcphdr->chksum);
tcphdr->chksum = 0;
fprintf(file, "should be 0x%lx ", inet_chksum_pseudo(p, (struct ip_addr *)&(iphdr->src),
(struct ip_addr *)&(iphdr->dest),
IP_PROTO_TCP, p->tot_len));*/
fprintf(file, "!chksum ");
}
fprintf(file, "%d.%d.%d.%d.%u > %d.%d.%d.%d.%u: ",
(int)(ntohl(iphdr->src.addr) >> 24) & 0xff,
(int)(ntohl(iphdr->src.addr) >> 16) & 0xff,
(int)(ntohl(iphdr->src.addr) >> 8) & 0xff,
(int)(ntohl(iphdr->src.addr) >> 0) & 0xff,
ntohs(udphdr->src),
(int)(ntohl(iphdr->dest.addr) >> 24) & 0xff,
(int)(ntohl(iphdr->dest.addr) >> 16) & 0xff,
(int)(ntohl(iphdr->dest.addr) >> 8) & 0xff,
(int)(ntohl(iphdr->dest.addr) >> 0) & 0xff,
ntohs(udphdr->dest));
fprintf(file, "U ");
len = ntohs(IPH_LEN(iphdr)) - sizeof(struct udp_hdr) - IP_HLEN;
fprintf(file, " %d\n", len);
fflush(file);
pbuf_header(p, IP_HLEN);
break;
}
#endif /* IPv4 */
}
/*-----------------------------------------------------------------------------------*/