diff options
Diffstat (limited to 'misc.c')
| -rw-r--r-- | misc.c | 207 |
1 files changed, 207 insertions, 0 deletions
@@ -0,0 +1,207 @@ +/* + * Copyright (C) 1993-2002 by Darren Reed. + * + * See the IPFILTER.LICENCE file for details on licencing. + */ +#if defined(__sgi) && (IRIX > 602) +# include <sys/ptimers.h> +#endif +#if (SOLARIS2 >= 7) +# define _SYS_VARARGS_H +# define _VARARGS_H +#endif +#if defined(__STDC__) +# include <stdarg.h> +#else +# include <varargs.h> +#endif +#include <stdio.h> +#include <assert.h> +#include <string.h> +#include <sys/types.h> +#if !defined(__SVR4) && !defined(__svr4__) +#include <strings.h> +#else +#include <sys/byteorder.h> +#endif +#include <sys/param.h> +#include <sys/time.h> +#include <stdlib.h> +#include <unistd.h> +#include <stddef.h> +#include <sys/socket.h> +#include <sys/ioctl.h> +#include <netinet/in.h> +#include <arpa/inet.h> +#include <netinet/in_systm.h> +#ifndef linux +#include <netinet/ip_var.h> +#endif +#include <netinet/ip.h> +#include <netinet/udp.h> +#include <netinet/tcp.h> +#include <netinet/ip_icmp.h> +#include <net/if.h> +#include <netdb.h> +#include <arpa/nameser.h> +#include <resolv.h> +#include "ip_compat.h" +#include <netinet/tcpip.h> +#include "ip_fil.h" +#include "ipf.h" +#include "ipt.h" + +#if !defined(lint) +static const char sccsid[] = "@(#)misc.c 1.3 2/4/96 (C) 1995 Darren Reed"; +static const char rcsid[] = "@(#)$Id: misc.c,v 2.2.2.9 2002/12/06 11:40:27 darrenr Exp $"; +#endif + +extern int opts; + + +void printpacket(ip) +ip_t *ip; +{ + tcphdr_t *tcp; + u_short len; + + if (ip->ip_v == 4) + len = ntohs(ip->ip_len); + else if (ip->ip_v == 6) + len = ntohs(((u_short *)ip)[2]) + 40; + else + len = 0; + + if ((opts & OPT_HEX) == OPT_HEX) { + u_char *s; + int i; + + for (s = (u_char *)ip, i = 0; i < len; i++) { + printf("%02x", *s++ & 0xff); + if (len - i > 1) { + i++; + printf("%02x", *s++ & 0xff); + } + if (i + 1 != len) + putchar(' '); + } + putchar('\n'); + return; + } + + if (ip->ip_v == 6) { + printpacket6(ip); + return; + } + + tcp = (struct tcphdr *)((char *)ip + (ip->ip_hl << 2)); + printf("ip %d(%d) %d", ntohs(ip->ip_len), ip->ip_hl << 2, ip->ip_p); + if (ip->ip_off & IP_OFFMASK) + printf(" @%d", ip->ip_off << 3); + (void)printf(" %s", inet_ntoa(ip->ip_src)); + if (!(ip->ip_off & IP_OFFMASK)) + if (ip->ip_p == IPPROTO_TCP || ip->ip_p == IPPROTO_UDP) + (void)printf(",%d", ntohs(tcp->th_sport)); + (void)printf(" > "); + (void)printf("%s", inet_ntoa(ip->ip_dst)); + if (!(ip->ip_off & IP_OFFMASK)) { + if (ip->ip_p == IPPROTO_TCP || ip->ip_p == IPPROTO_UDP) + (void)printf(",%d", ntohs(tcp->th_dport)); + if ((ip->ip_p == IPPROTO_TCP) && (tcp->th_flags)) { + putchar(' '); + if (tcp->th_flags & TH_FIN) + putchar('F'); + if (tcp->th_flags & TH_SYN) + putchar('S'); + if (tcp->th_flags & TH_RST) + putchar('R'); + if (tcp->th_flags & TH_PUSH) + putchar('P'); + if (tcp->th_flags & TH_ACK) + putchar('A'); + if (tcp->th_flags & TH_URG) + putchar('U'); + if (tcp->th_flags & TH_ECN) + putchar('E'); + if (tcp->th_flags & TH_CWR) + putchar('C'); + } + } + putchar('\n'); +} + + +/* + * This is meant to work without the IPv6 header files being present or + * the inet_ntop() library. + */ +void printpacket6(ip) +ip_t *ip; +{ + u_char *buf, p, hops; + u_short plen, *addrs; + tcphdr_t *tcp; + u_32_t flow; + + buf = (u_char *)ip; + tcp = (tcphdr_t *)(buf + 40); + p = buf[6]; + hops = buf[7]; + flow = ntohl(*(u_32_t *)buf); + flow &= 0xfffff; + plen = ntohs(*((u_short *)buf +2)); + addrs = (u_short *)buf + 4; + + printf("ip6/%d %d %#x %d", buf[0] & 0xf, plen, flow, p); + printf(" %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x", + ntohs(addrs[0]), ntohs(addrs[1]), ntohs(addrs[2]), + ntohs(addrs[3]), ntohs(addrs[4]), ntohs(addrs[5]), + ntohs(addrs[6]), ntohs(addrs[7])); + if (plen >= 4) + if (p == IPPROTO_TCP || p == IPPROTO_UDP) + (void)printf(",%d", ntohs(tcp->th_sport)); + printf(" >"); + addrs += 8; + printf(" %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x", + ntohs(addrs[0]), ntohs(addrs[1]), ntohs(addrs[2]), + ntohs(addrs[3]), ntohs(addrs[4]), ntohs(addrs[5]), + ntohs(addrs[6]), ntohs(addrs[7])); + if (plen >= 4) + if (p == IPPROTO_TCP || p == IPPROTO_UDP) + (void)printf(",%d", ntohs(tcp->th_dport)); + putchar('\n'); +} + + +#if defined(__STDC__) +void verbose(char *fmt, ...) +#else +void verbose(fmt, va_alist) +char *fmt; +va_dcl +#endif +{ + va_list pvar; + + va_start(pvar, fmt); + if (opts & OPT_VERBOSE) + vprintf(fmt, pvar); + va_end(pvar); +} + + +#ifdef __STDC__ +void debug(char *fmt, ...) +#else +void debug(fmt, va_alist) +char *fmt; +va_dcl +#endif +{ + va_list pvar; + + va_start(pvar, fmt); + if (opts & OPT_DEBUG) + vprintf(fmt, pvar); + va_end(pvar); +} |
