diff options
Diffstat (limited to 'usr.sbin/ipsend/ipresend/resend.c')
| -rw-r--r-- | usr.sbin/ipsend/ipresend/resend.c | 144 |
1 files changed, 0 insertions, 144 deletions
diff --git a/usr.sbin/ipsend/ipresend/resend.c b/usr.sbin/ipsend/ipresend/resend.c deleted file mode 100644 index 7890062250d..00000000000 --- a/usr.sbin/ipsend/ipresend/resend.c +++ /dev/null @@ -1,144 +0,0 @@ -/* $OpenBSD: resend.c,v 1.4 2001/01/17 06:01:26 fgsch Exp $ */ - -/* - * resend.c (C) 1995-1998 Darren Reed - * - * This was written to test what size TCP fragments would get through - * various TCP/IP packet filters, as used in IP firewalls. In certain - * conditions, enough of the TCP header is missing for unpredictable - * results unless the filter is aware that this can happen. - * - * Redistribution and use in source and binary forms are permitted - * provided that this notice is preserved and due credit is given - * to the original author and the contributors. - */ -#if !defined(lint) -static const char sccsid[] = "@(#)resend.c 1.3 1/11/96 (C)1995 Darren Reed"; -static const char rcsid[] = "@(#)$IPFilter: resend.c,v 2.1 1999/08/04 17:31:12 darrenr Exp $"; -#endif -#include <stdio.h> -#include <netdb.h> -#include <string.h> -#include <stdlib.h> -#include <unistd.h> -#include <sys/types.h> -#include <sys/time.h> -#include <sys/socket.h> -#include <net/if.h> -#include <netinet/in.h> -#include <arpa/inet.h> -#include <netinet/in_systm.h> -#include <netinet/ip.h> -#include <netinet/tcp.h> -#include <netinet/udp.h> -#include <netinet/ip_icmp.h> -#ifndef linux -# include <netinet/ip_var.h> -# include <netinet/if_ether.h> -# if __FreeBSD_version >= 300000 -# include <net/if_var.h> -# endif -#endif -#include "ipsend.h" - -extern int opts; - -static u_char pbuf[65536]; /* 1 big packet */ -void printpacket __P((ip_t *)); - - -void printpacket(ip) -ip_t *ip; -{ - tcphdr_t *t; - int i, j; - - t = (tcphdr_t *)((char *)ip + (ip->ip_hl << 2)); - if (ip->ip_tos) - printf("tos %#x ", ip->ip_tos); - if (ip->ip_off & 0x3fff) - printf("frag @%#x ", (ip->ip_off & 0x1fff) << 3); - printf("len %d id %d ", ip->ip_len, ip->ip_id); - printf("ttl %d p %d src %s", ip->ip_ttl, ip->ip_p, - inet_ntoa(ip->ip_src)); - if (ip->ip_p == IPPROTO_TCP || ip->ip_p == IPPROTO_UDP) - printf(",%d", t->th_sport); - printf(" dst %s", inet_ntoa(ip->ip_dst)); - if (ip->ip_p == IPPROTO_TCP || ip->ip_p == IPPROTO_UDP) - printf(",%d", t->th_dport); - if (ip->ip_p == IPPROTO_TCP) { - printf(" seq %lu:%lu flags ", - (u_long)t->th_seq, (u_long)t->th_ack); - for (j = 0, i = 1; i < 256; i *= 2, j++) - if (t->th_flags & i) - printf("%c", "FSRPAU--"[j]); - } - putchar('\n'); -} - - -int ip_resend(dev, mtu, r, gwip, datain) -char *dev; -int mtu; -struct in_addr gwip; -struct ipread *r; -char *datain; -{ - ether_header_t *eh; - char dhost[6]; - ip_t *ip; - int fd, wfd = initdevice(dev, 0, 5), len, i; - - if (datain) - fd = (*r->r_open)(datain); - else - fd = (*r->r_open)("-"); - - if (fd < 0) - exit(-1); - - ip = (struct ip *)pbuf; - eh = (ether_header_t *)malloc(sizeof(*eh)); - - bzero((char *)A_A eh->ether_shost, sizeof(eh->ether_shost)); - if (gwip.s_addr && (arp((char *)&gwip, dhost) == -1)) - { - perror("arp"); - return -2; - } - - while ((i = (*r->r_readip)((char *)pbuf, sizeof(pbuf), NULL, NULL)) > 0) - { - if (!(opts & OPT_RAW)) { - len = ntohs(ip->ip_len); - eh = (ether_header_t *)realloc((char *)eh, sizeof(*eh) + len); - eh->ether_type = htons((u_short)ETHERTYPE_IP); - if (!gwip.s_addr) { - if (arp((char *)&gwip, - (char *)A_A eh->ether_dhost) == -1) { - perror("arp"); - continue; - } - } else - bcopy(dhost, (char *)A_A eh->ether_dhost, - sizeof(dhost)); - if (!ip->ip_sum) - ip->ip_sum = chksum((u_short *)ip, - ip->ip_hl << 2); - bcopy(ip, (char *)(eh + 1), len); - len += sizeof(*eh); - printpacket(ip); - } else { - eh = (ether_header_t *)pbuf; - len = i; - } - - if (sendip(wfd, (char *)eh, len) == -1) - { - perror("send_packet"); - break; - } - } - (*r->r_close)(); - return 0; -} |