/* $NetBSD: iptests.c,v 1.7 1998/11/22 15:21:56 mrg Exp $ */ /* * Copyright (C) 1993-1998 by Darren Reed. * * 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[] = "%W% %G% (C)1995 Darren Reed"; static const char rcsid[] = "@(#)Id: iptests.c,v 2.0.2.13.2.3 1998/11/22 01:51:17 darrenr Exp "; #endif #include #include #include #include #include #include #include #if !defined(solaris) && !defined(linux) && !defined(__sgi) # define _KERNEL # define KERNEL # include # undef _KERNEL # undef KERNEL # include # include # include #endif #if !defined(ultrix) && !defined(hpux) && !defined(linux) && !defined(__sgi) # include #endif #ifndef ultrix # include #endif #if defined(solaris) # include #endif #include #ifdef sun #include #include #endif #if BSD >= 199103 # include # include # include #endif #include #include #include #if defined(linux) && (LINUX >= 0200) # include #endif #if !defined(linux) # include #else # define __KERNEL__ /* because there's a macro not wrapped by this */ # include /* in this file :-/ */ #endif #include #include #include #include #include #include #ifndef linux # include # include # include # include #endif #if defined(__SVR4) || defined(__svr4__) || defined(__sgi) # include #endif #include "ipsend.h" #define PAUSE() tv.tv_sec = 0; tv.tv_usec = 10000; \ (void) select(0, NULL, NULL, NULL, &tv) void ip_test1(dev, mtu, ip, gwip, ptest) char *dev; int mtu; ip_t *ip; struct in_addr gwip; int ptest; { struct timeval tv; udphdr_t *u; int nfd, i = 0, len, id = getpid(); ip->ip_hl = sizeof(*ip) >> 2; ip->ip_v = IPVERSION; ip->ip_tos = 0; ip->ip_off = 0; ip->ip_ttl = 60; ip->ip_p = IPPROTO_UDP; ip->ip_sum = 0; u = (udphdr_t *)(ip + 1); u->uh_sport = htons(1); u->uh_dport = htons(9); u->uh_sum = 0; u->uh_ulen = htons(sizeof(*u) + 4); ip->ip_len = sizeof(*ip) + ntohs(u->uh_ulen); len = ip->ip_len; nfd = initdevice(dev, u->uh_sport, 1); if (!ptest || (ptest == 1)) { /* * Part1: hl < len */ ip->ip_id = 0; printf("1.1. sending packets with ip_hl < ip_len\n"); for (i = 0; i < ((sizeof(*ip) + ntohs(u->uh_ulen)) >> 2); i++) { ip->ip_hl = i >> 2; (void) send_ip(nfd, 1500, ip, gwip, 1); printf("%d\r", i); fflush(stdout); PAUSE(); } putchar('\n'); } if (!ptest || (ptest == 2)) { /* * Part2: hl > len */ ip->ip_id = 0; printf("1.2. sending packets with ip_hl > ip_len\n"); for (; i < ((sizeof(*ip) * 2 + ntohs(u->uh_ulen)) >> 2); i++) { ip->ip_hl = i >> 2; (void) send_ip(nfd, 1500, ip, gwip, 1); printf("%d\r", i); fflush(stdout); PAUSE(); } putchar('\n'); } if (!ptest || (ptest == 3)) { /* * Part3: v < 4 */ ip->ip_id = 0; printf("1.3. ip_v < 4\n"); ip->ip_hl = sizeof(*ip) >> 2; for (i = 0; i < 4; i++) { ip->ip_v = i; (void) send_ip(nfd, 1500, ip, gwip, 1); printf("%d\r", i); fflush(stdout); PAUSE(); } putchar('\n'); } if (!ptest || (ptest == 4)) { /* * Part4: v > 4 */ ip->ip_id = 0; printf("1.4. ip_v > 4\n"); for (i = 5; i < 16; i++) { ip->ip_v = i; (void) send_ip(nfd, 1500, ip, gwip, 1); printf("%d\r", i); fflush(stdout); PAUSE(); } putchar('\n'); } if (!ptest || (ptest == 5)) { /* * Part5: len < packet */ ip->ip_id = 0; ip->ip_v = IPVERSION; i = ip->ip_len + 1; printf("1.5.0 ip_len < packet size (size++, long packets)\n"); for (; i < (ip->ip_len * 2); i++) { ip->ip_id = htons(id++); ip->ip_sum = 0; ip->ip_sum = chksum((u_short *)ip, ip->ip_hl << 2); (void) send_ether(nfd, (char *)ip, i, gwip); printf("%d\r", i); fflush(stdout); PAUSE(); } putchar('\n'); printf("1.5.1 ip_len < packet size (ip_len-, short packets)\n"); for (i = len; i > 0; i--) { ip->ip_id = htons(id++); ip->ip_len = i; ip->ip_sum = 0; ip->ip_sum = chksum((u_short *)ip, ip->ip_hl << 2); (void) send_ether(nfd, (char *)ip, len, gwip); printf("%d\r", i); fflush(stdout); PAUSE(); } putchar('\n'); } if (!ptest || (ptest == 6)) { /* * Part6: len > packet */ ip->ip_id = 0; printf("1.6.0 ip_len > packet size (increase ip_len)\n"); for (i = len + 1; i < (len * 2); i++) { ip->ip_id = htons(id++); ip->ip_len = i; ip->ip_sum = 0; ip->ip_sum = chksum((u_short *)ip, ip->ip_hl << 2); (void) send_ether(nfd, (char *)ip, len, gwip); printf("%d\r", i); fflush(stdout); PAUSE(); } putchar('\n'); ip->ip_len = len; printf("1.6.1 ip_len > packet size (size--, short packets)\n"); for (i = len; i > 0; i--) { ip->ip_id = htons(id++); ip->ip_sum = 0; ip->ip_sum = chksum((u_short *)ip, ip->ip_hl << 2); (void) send_ether(nfd, (char *)ip, i, gwip); printf("%d\r", i); fflush(stdout); PAUSE(); } putchar('\n'); } if (!ptest || (ptest == 7)) { /* * Part7: 0 length fragment */ printf("1.7.0 Zero length fragments (ip_off = 0x2000)\n"); ip->ip_id = 0; ip->ip_len = sizeof(*ip); ip->ip_off = htons(IP_MF); (void) send_ip(nfd, mtu, ip, gwip, 1); fflush(stdout); PAUSE(); printf("1.7.1 Zero length fragments (ip_off = 0x3000)\n"); ip->ip_id = 0; ip->ip_len = sizeof(*ip); ip->ip_off = htons(IP_MF); (void) send_ip(nfd, mtu, ip, gwip, 1); fflush(stdout); PAUSE(); printf("1.7.2 Zero length fragments (ip_off = 0xa000)\n"); ip->ip_id = 0; ip->ip_len = sizeof(*ip); ip->ip_off = htons(0xa000); (void) send_ip(nfd, mtu, ip, gwip, 1); fflush(stdout); PAUSE(); printf("1.7.3 Zero length fragments (ip_off = 0x0100)\n"); ip->ip_id = 0; ip->ip_len = sizeof(*ip); ip->ip_off = htons(0x0100); (void) send_ip(nfd, mtu, ip, gwip, 1); fflush(stdout); PAUSE(); } if (!ptest || (ptest == 8)) { struct timeval tv; gettimeofday(&tv, NULL); srand(tv.tv_sec ^ getpid() ^ tv.tv_usec); /* * Part8.1: 63k packet + 1k fragment at offset 0x1ffe * Mark it as being ICMP (so it doesn't get junked), but * don't bother about the ICMP header, we're not worrying * about that here. */ ip->ip_p = IPPROTO_ICMP; ip->ip_off = htons(IP_MF); u->uh_dport = htons(9); ip->ip_id = htons(id++); printf("1.8.1 63k packet + 1k fragment at offset 0x1ffe\n"); ip->ip_len = 768 + 20 + 8; (void) send_ip(nfd, mtu, ip, gwip, 1); printf("%d\r", i); ip->ip_len = MIN(768 + 20, mtu - 68); i = 512; for (; i < (63 * 1024 + 768); i += 768) { ip->ip_off = htons(IP_MF | (i >> 3)); (void) send_ip(nfd, mtu, ip, gwip, 1); printf("%d\r", i); fflush(stdout); PAUSE(); } ip->ip_len = 896 + 20; ip->ip_off = htons(i >> 3); (void) send_ip(nfd, mtu, ip, gwip, 1); printf("%d\r", i); putchar('\n'); fflush(stdout); /* * Part8.2: 63k packet + 1k fragment at offset 0x1ffe * Mark it as being ICMP (so it doesn't get junked), but * don't bother about the ICMP header, we're not worrying * about that here. (Lossage here) */ ip->ip_p = IPPROTO_ICMP; ip->ip_off = htons(IP_MF); u->uh_dport = htons(9); ip->ip_id = htons(id++); printf("1.8.2 63k packet + 1k fragment at offset 0x1ffe\n"); ip->ip_len = 768 + 20 + 8; if ((rand() & 0x1f) != 0) { (void) send_ip(nfd, mtu, ip, gwip, 1); printf("%d\r", i); } else printf("skip 0\n"); ip->ip_len = MIN(768 + 20, mtu - 68); i = 512; for (; i < (63 * 1024 + 768); i += 768) { ip->ip_off = htons(IP_MF | (i >> 3)); if ((rand() & 0x1f) != 0) { (void) send_ip(nfd, mtu, ip, gwip, 1); printf("%d\r", i); } else printf("skip %d\n", i); fflush(stdout); PAUSE(); } ip->ip_len = 896 + 20; ip->ip_off = htons(i >> 3); if ((rand() & 0x1f) != 0) { (void) send_ip(nfd, mtu, ip, gwip, 1); printf("%d\r", i); } else printf("skip\n"); putchar('\n'); fflush(stdout); /* * Part8.3: 33k packet - test for not dealing with -ve length * Mark it as being ICMP (so it doesn't get junked), but * don't bother about the ICMP header, we're not worrying * about that here. */ ip->ip_p = IPPROTO_ICMP; ip->ip_off = htons(IP_MF); u->uh_dport = htons(9); ip->ip_id = htons(id++); printf("1.8.3 33k packet\n"); ip->ip_len = 768 + 20 + 8; (void) send_ip(nfd, mtu, ip, gwip, 1); printf("%d\r", i); ip->ip_len = MIN(768 + 20, mtu - 68); i = 512; for (; i < (32 * 1024 + 768); i += 768) { ip->ip_off = htons(IP_MF | (i >> 3)); (void) send_ip(nfd, mtu, ip, gwip, 1); printf("%d\r", i); fflush(stdout); PAUSE(); } ip->ip_len = 896 + 20; ip->ip_off = htons(i >> 3); (void) send_ip(nfd, mtu, ip, gwip, 1); printf("%d\r", i); putchar('\n'); fflush(stdout); } ip->ip_len = len; ip->ip_off = 0; if (!ptest || (ptest == 9)) { /* * Part9: off & 0x8000 == 0x8000 */ ip->ip_id = 0; ip->ip_off = htons(0x8000); printf("1.9. ip_off & 0x8000 == 0x8000\n"); (void) send_ip(nfd, mtu, ip, gwip, 1); fflush(stdout); PAUSE(); } ip->ip_off = 0; if (!ptest || (ptest == 10)) { /* * Part10: ttl = 255 */ ip->ip_id = 0; ip->ip_ttl = 255; printf("1.10.0 ip_ttl = 255\n"); (void) send_ip(nfd, mtu, ip, gwip, 1); fflush(stdout); PAUSE(); ip->ip_ttl = 128; printf("1.10.1 ip_ttl = 128\n"); (void) send_ip(nfd, mtu, ip, gwip, 1); fflush(stdout); PAUSE(); ip->ip_ttl = 0; printf("1.10.2 ip_ttl = 0\n"); (void) send_ip(nfd, mtu, ip, gwip, 1); fflush(stdout); PAUSE(); } (void) close(nfd); } void ip_test2(dev, mtu, ip, gwip, ptest) char *dev; int mtu; ip_t *ip; struct in_addr gwip; int ptest; { struct timeval tv; int nfd; u_char *s; s = (u_char *)(ip + 1); nfd = initdevice(dev, htons(1), 1); ip->ip_hl = 6; ip->ip_len = ip->ip_hl << 2; s[IPOPT_OPTVAL] = IPOPT_NOP; s++; if (!ptest || (ptest == 1)) { /* * Test 1: option length > packet length, * header length == packet length */ s[IPOPT_OPTVAL] = IPOPT_TS; s[IPOPT_OLEN] = 4; s[IPOPT_OFFSET] = IPOPT_MINOFF; ip->ip_p = IPPROTO_IP; printf("2.1 option length > packet length\n"); (void) send_ip(nfd, mtu, ip, gwip, 1); fflush(stdout); PAUSE(); } ip->ip_hl = 7; ip->ip_len = ip->ip_hl << 2; if (!ptest || (ptest == 1)) { /* * Test 2: options have length = 0 */ printf("2.2.1 option length = 0, RR\n"); s[IPOPT_OPTVAL] = IPOPT_RR; s[IPOPT_OLEN] = 0; (void) send_ip(nfd, mtu, ip, gwip, 1); fflush(stdout); PAUSE(); printf("2.2.2 option length = 0, TS\n"); s[IPOPT_OPTVAL] = IPOPT_TS; s[IPOPT_OLEN] = 0; (void) send_ip(nfd, mtu, ip, gwip, 1); fflush(stdout); PAUSE(); printf("2.2.3 option length = 0, SECURITY\n"); s[IPOPT_OPTVAL] = IPOPT_SECURITY; s[IPOPT_OLEN] = 0; (void) send_ip(nfd, mtu, ip, gwip, 1); fflush(stdout); PAUSE(); printf("2.2.4 option length = 0, LSRR\n"); s[IPOPT_OPTVAL] = IPOPT_LSRR; s[IPOPT_OLEN] = 0; (void) send_ip(nfd, mtu, ip, gwip, 1); fflush(stdout); PAUSE(); printf("2.2.5 option length = 0, SATID\n"); s[IPOPT_OPTVAL] = IPOPT_SATID; s[IPOPT_OLEN] = 0; (void) send_ip(nfd, mtu, ip, gwip, 1); fflush(stdout); PAUSE(); printf("2.2.6 option length = 0, SSRR\n"); s[IPOPT_OPTVAL] = IPOPT_SSRR; s[IPOPT_OLEN] = 0; (void) send_ip(nfd, mtu, ip, gwip, 1); fflush(stdout); PAUSE(); } (void) close(nfd); } /* * test 3 (ICMP) */ void ip_test3(dev, mtu, ip, gwip, ptest) char *dev; int mtu; ip_t *ip; struct in_addr gwip; int ptest; { static int ict1[10] = { 8, 9, 10, 13, 14, 15, 16, 17, 18, 0 }; static int ict2[8] = { 3, 9, 10, 13, 14, 17, 18, 0 }; struct timeval tv; struct icmp *icp; int nfd, i; ip->ip_hl = sizeof(*ip) >> 2; ip->ip_v = IPVERSION; ip->ip_tos = 0; ip->ip_off = 0; ip->ip_ttl = 60; ip->ip_p = IPPROTO_ICMP; ip->ip_sum = 0; ip->ip_len = sizeof(*ip) + sizeof(*icp); icp = (struct icmp *)((char *)ip + (ip->ip_hl << 2)); nfd = initdevice(dev, htons(1), 1); if (!ptest || (ptest == 1)) { /* * Type 0 - 31, 255, code = 0 */ bzero((char *)icp, sizeof(*icp)); for (i = 0; i < 32; i++) { icp->icmp_type = i; (void) send_icmp(nfd, mtu, ip, gwip); PAUSE(); printf("3.1.%d ICMP type %d code 0 (all 0's)\r", i, i); } icp->icmp_type = 255; (void) send_icmp(nfd, mtu, ip, gwip); PAUSE(); printf("3.1.%d ICMP type %d code 0 (all 0's)\r", i, 255); putchar('\n'); } if (!ptest || (ptest == 2)) { /* * Type 3, code = 0 - 31 */ icp->icmp_type = 3; for (i = 0; i < 32; i++) { icp->icmp_code = i; (void) send_icmp(nfd, mtu, ip, gwip); PAUSE(); printf("3.2.%d ICMP type 3 code %d (all 0's)\r", i, i); } } if (!ptest || (ptest == 3)) { /* * Type 4, code = 0,127,128,255 */ icp->icmp_type = 4; icp->icmp_code = 0; (void) send_icmp(nfd, mtu, ip, gwip); PAUSE(); printf("3.3.1 ICMP type 4 code 0 (all 0's)\r"); icp->icmp_code = 127; (void) send_icmp(nfd, mtu, ip, gwip); PAUSE(); printf("3.3.2 ICMP type 4 code 127 (all 0's)\r"); icp->icmp_code = 128; (void) send_icmp(nfd, mtu, ip, gwip); PAUSE(); printf("3.3.3 ICMP type 4 code 128 (all 0's)\r"); icp->icmp_code = 255; (void) send_icmp(nfd, mtu, ip, gwip); PAUSE(); printf("3.3.4 ICMP type 4 code 255 (all 0's)\r"); } if (!ptest || (ptest == 4)) { /* * Type 5, code = 0,127,128,255 */ icp->icmp_type = 5; icp->icmp_code = 0; (void) send_icmp(nfd, mtu, ip, gwip); PAUSE(); printf("3.4.1 ICMP type 5 code 0 (all 0's)\r"); icp->icmp_code = 127; (void) send_icmp(nfd, mtu, ip, gwip); PAUSE(); printf("3.4.2 ICMP type 5 code 127 (all 0's)\r"); icp->icmp_code = 128; (void) send_icmp(nfd, mtu, ip, gwip); PAUSE(); printf("3.4.3 ICMP type 5 code 128 (all 0's)\r"); icp->icmp_code = 255; (void) send_icmp(nfd, mtu, ip, gwip); PAUSE(); printf("3.4.4 ICMP type 5 code 255 (all 0's)\r"); } if (!ptest || (ptest == 5)) { /* * Type 8-10;13-18, code - 0,127,128,255 */ for (i = 0; ict1[i]; i++) { icp->icmp_type = ict1[i]; icp->icmp_code = 0; (void) send_icmp(nfd, mtu, ip, gwip); PAUSE(); printf("3.5.%d ICMP type 5 code 0 (all 0's)\r", i * 4); icp->icmp_code = 127; (void) send_icmp(nfd, mtu, ip, gwip); PAUSE(); printf("3.5.%d ICMP type 5 code 127 (all 0's)\r", i * 4 + 1); icp->icmp_code = 128; (void) send_icmp(nfd, mtu, ip, gwip); PAUSE(); printf("3.5.%d ICMP type 5 code 128 (all 0's)\r", i * 4 + 2); icp->icmp_code = 255; (void) send_icmp(nfd, mtu, ip, gwip); PAUSE(); printf("3.5.%d ICMP type 5 code 255 (all 0's)\r", i * 4 + 3); } putchar('\n'); } if (!ptest || (ptest == 6)) { /* * Type 12, code - 0,127,128,129,255 */ icp->icmp_type = 12; icp->icmp_code = 0; (void) send_icmp(nfd, mtu, ip, gwip); PAUSE(); printf("3.6.1 ICMP type 12 code 0 (all 0's)\r"); icp->icmp_code = 127; (void) send_icmp(nfd, mtu, ip, gwip); PAUSE(); printf("3.6.2 ICMP type 12 code 127 (all 0's)\r"); icp->icmp_code = 128; (void) send_icmp(nfd, mtu, ip, gwip); PAUSE(); printf("3.6.3 ICMP type 12 code 128 (all 0's)\r"); icp->icmp_code = 129; (void) send_icmp(nfd, mtu, ip, gwip); PAUSE(); printf("3.6.4 ICMP type 12 code 129 (all 0's)\r"); icp->icmp_code = 255; (void) send_icmp(nfd, mtu, ip, gwip); PAUSE(); printf("3.6.5 ICMP type 12 code 255 (all 0's)\r"); putchar('\n'); } if (!ptest || (ptest == 7)) { /* * Type 3;9-10;13-14;17-18 - shorter packets */ ip->ip_len = sizeof(*ip) + sizeof(*icp) / 2; for (i = 0; ict2[i]; i++) { icp->icmp_type = ict1[i]; icp->icmp_code = 0; (void) send_icmp(nfd, mtu, ip, gwip); PAUSE(); printf("3.5.%d ICMP type %d code 0 (all 0's)\r", i * 4, icp->icmp_type); icp->icmp_code = 127; (void) send_icmp(nfd, mtu, ip, gwip); PAUSE(); printf("3.5.%d ICMP type %d code 127 (all 0's)\r", i * 4 + 1, icp->icmp_type); icp->icmp_code = 128; (void) send_icmp(nfd, mtu, ip, gwip); PAUSE(); printf("3.5.%d ICMP type %d code 128 (all 0's)\r", i * 4 + 2, icp->icmp_type); icp->icmp_code = 255; (void) send_icmp(nfd, mtu, ip, gwip); PAUSE(); printf("3.5.%d ICMP type %d code 127 (all 0's)\r", i * 4 + 3, icp->icmp_type); } putchar('\n'); } } /* Perform test 4 (UDP) */ void ip_test4(dev, mtu, ip, gwip, ptest) char *dev; int mtu; ip_t *ip; struct in_addr gwip; int ptest; { struct timeval tv; udphdr_t *u; int nfd, i; ip->ip_hl = sizeof(*ip) >> 2; ip->ip_v = IPVERSION; ip->ip_tos = 0; ip->ip_off = 0; ip->ip_ttl = 60; ip->ip_p = IPPROTO_UDP; ip->ip_sum = 0; u = (udphdr_t *)((char *)ip + (ip->ip_hl << 2)); u->uh_sport = htons(1); u->uh_dport = htons(1); u->uh_ulen = htons(sizeof(*u) + 4); nfd = initdevice(dev, u->uh_sport, 1); if (!ptest || (ptest == 1)) { /* * Test 1. ulen > packet */ u->uh_ulen = htons(sizeof(*u) + 4); ip->ip_len = (ip->ip_hl << 2) + ntohs(u->uh_ulen); printf("4.1 UDP uh_ulen > packet size - short packets\n"); for (i = ntohs(u->uh_ulen) * 2; i > sizeof(*u) + 4; i--) { u->uh_ulen = htons(i); (void) send_udp(nfd, 1500, ip, gwip); printf("%d\r", i); fflush(stdout); PAUSE(); } putchar('\n'); } if (!ptest || (ptest == 2)) { /* * Test 2. ulen < packet */ u->uh_ulen = htons(sizeof(*u) + 4); ip->ip_len = (ip->ip_hl << 2) + ntohs(u->uh_ulen); printf("4.2 UDP uh_ulen < packet size - short packets\n"); for (i = ntohs(u->uh_ulen) * 2; i > sizeof(*u) + 4; i--) { ip->ip_len = i; (void) send_udp(nfd, 1500, ip, gwip); printf("%d\r", i); fflush(stdout); PAUSE(); } putchar('\n'); } if (!ptest || (ptest == 3)) { /* * Test 3: sport = 0, sport = 1, sport = 32767 * sport = 32768, sport = 65535 */ u->uh_ulen = sizeof(*u) + 4; ip->ip_len = (ip->ip_hl << 2) + ntohs(u->uh_ulen); printf("4.3.1 UDP sport = 0\n"); u->uh_sport = 0; (void) send_udp(nfd, 1500, ip, gwip); printf("0\n"); fflush(stdout); PAUSE(); printf("4.3.2 UDP sport = 1\n"); u->uh_sport = htons(1); (void) send_udp(nfd, 1500, ip, gwip); printf("1\n"); fflush(stdout); PAUSE(); printf("4.3.3 UDP sport = 32767\n"); u->uh_sport = htons(32767); (void) send_udp(nfd, 1500, ip, gwip); printf("32767\n"); fflush(stdout); PAUSE(); printf("4.3.4 UDP sport = 32768\n"); u->uh_sport = htons(32768); (void) send_udp(nfd, 1500, ip, gwip); printf("32768\n"); putchar('\n'); fflush(stdout); PAUSE(); printf("4.3.5 UDP sport = 65535\n"); u->uh_sport = htons(65535); (void) send_udp(nfd, 1500, ip, gwip); printf("65535\n"); fflush(stdout); PAUSE(); } if (!ptest || (ptest == 4)) { /* * Test 4: dport = 0, dport = 1, dport = 32767 * dport = 32768, dport = 65535 */ u->uh_ulen = ntohs(sizeof(*u) + 4); u->uh_sport = htons(1); ip->ip_len = (ip->ip_hl << 2) + ntohs(u->uh_ulen); printf("4.4.1 UDP dport = 0\n"); u->uh_dport = 0; (void) send_udp(nfd, 1500, ip, gwip); printf("0\n"); fflush(stdout); PAUSE(); printf("4.4.2 UDP dport = 1\n"); u->uh_dport = htons(1); (void) send_udp(nfd, 1500, ip, gwip); printf("1\n"); fflush(stdout); PAUSE(); printf("4.4.3 UDP dport = 32767\n"); u->uh_dport = htons(32767); (void) send_udp(nfd, 1500, ip, gwip); printf("32767\n"); fflush(stdout); PAUSE(); printf("4.4.4 UDP dport = 32768\n"); u->uh_dport = htons(32768); (void) send_udp(nfd, 1500, ip, gwip); printf("32768\n"); fflush(stdout); PAUSE(); printf("4.4.5 UDP dport = 65535\n"); u->uh_dport = htons(65535); (void) send_udp(nfd, 1500, ip, gwip); printf("65535\n"); fflush(stdout); PAUSE(); } if (!ptest || (ptest == 5)) { /* * Test 5: sizeof(ip_t) <= MTU <= sizeof(udphdr_t) + * sizeof(ip_t) */ printf("4.5 UDP 20 <= MTU <= 32\n"); for (i = sizeof(*ip); i <= ntohs(u->uh_ulen); i++) { (void) send_udp(nfd, i, ip, gwip); printf("%d\r", i); fflush(stdout); PAUSE(); } putchar('\n'); } } /* Perform test 5 (TCP) */ void ip_test5(dev, mtu, ip, gwip, ptest) char *dev; int mtu; ip_t *ip; struct in_addr gwip; int ptest; { struct timeval tv; tcphdr_t *t; int nfd, i; t = (tcphdr_t *)((char *)ip + (ip->ip_hl << 2)); #ifndef linux t->th_x2 = 0; #endif t->th_off = 0; t->th_sport = htons(1); t->th_dport = htons(1); t->th_win = htons(4096); t->th_urp = 0; t->th_sum = 0; t->th_seq = htonl(1); t->th_ack = 0; ip->ip_len = sizeof(ip_t) + sizeof(tcphdr_t); nfd = initdevice(dev, t->th_sport, 1); if (!ptest || (ptest == 1)) { /* * Test 1: flags variations, 0 - 3f */ t->th_off = sizeof(*t) >> 2; printf("5.1 Test TCP flag combinations\n"); for (i = 0; i <= (TH_URG|TH_ACK|TH_PUSH|TH_RST|TH_SYN|TH_FIN); i++) { t->th_flags = i; (void) send_tcp(nfd, mtu, ip, gwip); printf("%d\r", i); fflush(stdout); PAUSE(); } putchar('\n'); } if (!ptest || (ptest == 2)) { t->th_flags = TH_SYN; /* * Test 2: seq = 0, seq = 1, seq = 0x7fffffff, seq=0x80000000, * seq = 0xa000000, seq = 0xffffffff */ printf("5.2.1 TCP seq = 0\n"); t->th_seq = htonl(0); (void) send_tcp(nfd, mtu, ip, gwip); fflush(stdout); PAUSE(); printf("5.2.2 TCP seq = 1\n"); t->th_seq = htonl(1); (void) send_tcp(nfd, mtu, ip, gwip); fflush(stdout); PAUSE(); printf("5.2.3 TCP seq = 0x7fffffff\n"); t->th_seq = htonl(0x7fffffff); (void) send_tcp(nfd, mtu, ip, gwip); fflush(stdout); PAUSE(); printf("5.2.4 TCP seq = 0x80000000\n"); t->th_seq = htonl(0x80000000); (void) send_tcp(nfd, mtu, ip, gwip); fflush(stdout); PAUSE(); printf("5.2.5 TCP seq = 0xc0000000\n"); t->th_seq = htonl(0xc0000000); (void) send_tcp(nfd, mtu, ip, gwip); fflush(stdout); PAUSE(); printf("5.2.6 TCP seq = 0xffffffff\n"); t->th_seq = htonl(0xffffffff); (void) send_tcp(nfd, mtu, ip, gwip); fflush(stdout); PAUSE(); } if (!ptest || (ptest == 3)) { t->th_flags = TH_ACK; /* * Test 3: ack = 0, ack = 1, ack = 0x7fffffff, ack = 0x8000000 * ack = 0xa000000, ack = 0xffffffff */ printf("5.3.1 TCP ack = 0\n"); t->th_ack = 0; (void) send_tcp(nfd, mtu, ip, gwip); fflush(stdout); PAUSE(); printf("5.3.2 TCP ack = 1\n"); t->th_ack = htonl(1); (void) send_tcp(nfd, mtu, ip, gwip); fflush(stdout); PAUSE(); printf("5.3.3 TCP ack = 0x7fffffff\n"); t->th_ack = htonl(0x7fffffff); (void) send_tcp(nfd, mtu, ip, gwip); fflush(stdout); PAUSE(); printf("5.3.4 TCP ack = 0x80000000\n"); t->th_ack = htonl(0x80000000); (void) send_tcp(nfd, mtu, ip, gwip); fflush(stdout); PAUSE(); printf("5.3.5 TCP ack = 0xc0000000\n"); t->th_ack = htonl(0xc0000000); (void) send_tcp(nfd, mtu, ip, gwip); fflush(stdout); PAUSE(); printf("5.3.6 TCP ack = 0xffffffff\n"); t->th_ack = htonl(0xffffffff); (void) send_tcp(nfd, mtu, ip, gwip); fflush(stdout); PAUSE(); } if (!ptest || (ptest == 4)) { t->th_flags = TH_SYN; /* * Test 4: win = 0, win = 32768, win = 65535 */ printf("5.4.1 TCP win = 0\n"); t->th_seq = htonl(0); (void) send_tcp(nfd, mtu, ip, gwip); fflush(stdout); PAUSE(); printf("5.4.2 TCP win = 32768\n"); t->th_seq = htonl(0x7fff); (void) send_tcp(nfd, mtu, ip, gwip); fflush(stdout); PAUSE(); printf("5.4.3 TCP win = 65535\n"); t->th_win = htons(0xffff); (void) send_tcp(nfd, mtu, ip, gwip); fflush(stdout); PAUSE(); } #if !defined(linux) && !defined(__SVR4) && !defined(__svr4__) && \ !defined(__sgi) { struct tcpcb *tcbp, tcb; struct tcpiphdr ti; struct sockaddr_in sin; int fd, slen; bzero((char *)&sin, sizeof(sin)); for (i = 1; i < 63; i++) { fd = socket(AF_INET, SOCK_STREAM, 0); bzero((char *)&sin, sizeof(sin)); sin.sin_addr.s_addr = ip->ip_dst.s_addr; sin.sin_port = htons(i); sin.sin_family = AF_INET; if (!connect(fd, (struct sockaddr *)&sin, sizeof(sin))) break; close(fd); } if (i == 63) { printf("Couldn't open a TCP socket between ports 1 and 63\n"); printf("to host %s for test 5 and 6 - skipping.\n", inet_ntoa(ip->ip_dst)); goto skip_five_and_six; } bcopy((char *)ip, (char *)&ti, sizeof(*ip)); t->th_dport = htons(i); slen = sizeof(sin); if (!getsockname(fd, (struct sockaddr *)&sin, &slen)) t->th_sport = sin.sin_port; if (!(tcbp = find_tcp(fd, &ti))) { printf("Can't find PCB\n"); goto skip_five_and_six; } KMCPY(&tcb, tcbp, sizeof(tcb)); ti.ti_win = tcb.rcv_adv; ti.ti_seq = htonl(tcb.snd_nxt - 1); ti.ti_ack = tcb.rcv_nxt; if (!ptest || (ptest == 5)) { /* * Test 5: urp */ t->th_flags = TH_ACK|TH_URG; printf("5.5.1 TCP Urgent pointer, sport %hu dport %hu\n", ntohs(t->th_sport), ntohs(t->th_dport)); t->th_urp = htons(1); (void) send_tcp(nfd, mtu, ip, gwip); PAUSE(); t->th_seq = htonl(tcb.snd_nxt); ip->ip_len = sizeof(ip_t) + sizeof(tcphdr_t) + 1; t->th_urp = htons(0x7fff); (void) send_tcp(nfd, mtu, ip, gwip); PAUSE(); t->th_urp = htons(0x8000); (void) send_tcp(nfd, mtu, ip, gwip); PAUSE(); t->th_urp = htons(0xffff); (void) send_tcp(nfd, mtu, ip, gwip); PAUSE(); t->th_urp = 0; t->th_flags &= ~TH_URG; ip->ip_len = sizeof(ip_t) + sizeof(tcphdr_t); } if (!ptest || (ptest == 6)) { /* * Test 6: data offset, off = 0, off is inside, off is outside */ t->th_flags = TH_ACK; printf("5.6.1 TCP off = 1-15, len = 40\n"); for (i = 1; i < 16; i++) { ti.ti_off = ntohs(i); (void) send_tcp(nfd, mtu, ip, gwip); printf("%d\r", i); fflush(stdout); PAUSE(); } putchar('\n'); ip->ip_len = sizeof(ip_t) + sizeof(tcphdr_t); } (void) close(fd); } skip_five_and_six: #endif t->th_seq = htonl(1); t->th_ack = htonl(1); t->th_off = 0; if (!ptest || (ptest == 7)) { t->th_flags = TH_SYN; /* * Test 7: sport = 0, sport = 1, sport = 32767 * sport = 32768, sport = 65535 */ printf("5.7.1 TCP sport = 0\n"); t->th_sport = 0; (void) send_tcp(nfd, mtu, ip, gwip); fflush(stdout); PAUSE(); printf("5.7.2 TCP sport = 1\n"); t->th_sport = htons(1); (void) send_tcp(nfd, mtu, ip, gwip); fflush(stdout); PAUSE(); printf("5.7.3 TCP sport = 32767\n"); t->th_sport = htons(32767); (void) send_tcp(nfd, mtu, ip, gwip); fflush(stdout); PAUSE(); printf("5.7.4 TCP sport = 32768\n"); t->th_sport = htons(32768); (void) send_tcp(nfd, mtu, ip, gwip); fflush(stdout); PAUSE(); printf("5.7.5 TCP sport = 65535\n"); t->th_sport = htons(65535); (void) send_tcp(nfd, mtu, ip, gwip); fflush(stdout); PAUSE(); } if (!ptest || (ptest == 8)) { t->th_sport = htons(1); t->th_flags = TH_SYN; /* * Test 8: dport = 0, dport = 1, dport = 32767 * dport = 32768, dport = 65535 */ printf("5.8.1 TCP dport = 0\n"); t->th_dport = 0; (void) send_tcp(nfd, mtu, ip, gwip); fflush(stdout); PAUSE(); printf("5.8.2 TCP dport = 1\n"); t->th_dport = htons(1); (void) send_tcp(nfd, mtu, ip, gwip); fflush(stdout); PAUSE(); printf("5.8.3 TCP dport = 32767\n"); t->th_dport = htons(32767); (void) send_tcp(nfd, mtu, ip, gwip); fflush(stdout); PAUSE(); printf("5.8.4 TCP dport = 32768\n"); t->th_dport = htons(32768); (void) send_tcp(nfd, mtu, ip, gwip); fflush(stdout); PAUSE(); printf("5.8.5 TCP dport = 65535\n"); t->th_dport = htons(65535); (void) send_tcp(nfd, mtu, ip, gwip); fflush(stdout); PAUSE(); } /* LAND attack - self connect, so make src & dst ip/port the same */ if (!ptest || (ptest == 9)) { printf("5.9 TCP LAND attack. sport = 25, dport = 25\n"); /* chose SMTP port 25 */ t->th_sport = htons(25); t->th_dport = htons(25); t->th_flags = TH_SYN; ip->ip_src = ip->ip_dst; (void) send_tcp(nfd, mtu, ip, gwip); fflush(stdout); PAUSE(); } /* TCP options header checking */ /* 0 length options, etc */ } /* Perform test 6 (exhaust mbuf test) */ void ip_test6(dev, mtu, ip, gwip, ptest) char *dev; int mtu; ip_t *ip; struct in_addr gwip; int ptest; { struct timeval tv; udphdr_t *u; int nfd, i, j, k; ip->ip_v = IPVERSION; ip->ip_tos = 0; ip->ip_off = 0; ip->ip_ttl = 60; ip->ip_p = IPPROTO_UDP; ip->ip_sum = 0; u = (udphdr_t *)(ip + 1); u->uh_sport = htons(1); u->uh_dport = htons(9); u->uh_sum = 0; nfd = initdevice(dev, u->uh_sport, 1); u->uh_ulen = htons(7168); printf("6. Exhaustive mbuf test.\n"); printf(" Send 7k packet in 768 & 128 byte fragments, 128 times.\n"); printf(" Total of around 8,900 packets\n"); for (i = 0; i < 128; i++) { /* * First send the entire packet in 768 byte chunks. */ ip->ip_len = sizeof(*ip) + 768 + sizeof(*u); ip->ip_hl = sizeof(*ip) >> 2; ip->ip_off = htons(IP_MF); (void) send_ip(nfd, 1500, ip, gwip, 1); printf("%d %d\r", i, 0); fflush(stdout); PAUSE(); /* * And again using 128 byte chunks. */ ip->ip_len = sizeof(*ip) + 128 + sizeof(*u); ip->ip_off = htons(IP_MF); (void) send_ip(nfd, 1500, ip, gwip, 1); printf("%d %d\r", i, 0); fflush(stdout); PAUSE(); for (j = 768; j < 3584; j += 768) { ip->ip_len = sizeof(*ip) + 768; ip->ip_off = htons(IP_MF|(j>>3)); (void) send_ip(nfd, 1500, ip, gwip, 1); printf("%d %d\r", i, j); fflush(stdout); PAUSE(); ip->ip_len = sizeof(*ip) + 128; for (k = j - 768; k < j; k += 128) { ip->ip_off = htons(IP_MF|(k>>3)); (void) send_ip(nfd, 1500, ip, gwip, 1); printf("%d %d\r", i, k); fflush(stdout); PAUSE(); } } } putchar('\n'); } /* Perform test 7 (random packets) */ static u_long tbuf[64]; void ip_test7(dev, mtu, ip, gwip, ptest) char *dev; int mtu; ip_t *ip; struct in_addr gwip; int ptest; { ip_t *pip; struct timeval tv; int nfd, i, j; u_char *s; nfd = initdevice(dev, 0, 1); pip = (ip_t *)tbuf; srand(time(NULL) ^ (getpid() * getppid())); printf("7. send 1024 random IP packets.\n"); for (i = 0; i < 512; i++) { for (s = (u_char *)pip, j = 0; j < sizeof(tbuf); j++, s++) *s = (rand() >> 13) & 0xff; pip->ip_v = IPVERSION; bcopy((char *)&ip->ip_dst, (char *)&pip->ip_dst, sizeof(struct in_addr)); pip->ip_sum = 0; pip->ip_len &= 0xff; (void) send_ip(nfd, mtu, pip, gwip, 0); printf("%d\r", i); fflush(stdout); PAUSE(); } putchar('\n'); for (i = 0; i < 512; i++) { for (s = (u_char *)pip, j = 0; j < sizeof(tbuf); j++, s++) *s = (rand() >> 13) & 0xff; pip->ip_v = IPVERSION; pip->ip_off &= htons(0xc000); bcopy((char *)&ip->ip_dst, (char *)&pip->ip_dst, sizeof(struct in_addr)); pip->ip_sum = 0; pip->ip_len &= 0xff; (void) send_ip(nfd, mtu, pip, gwip, 0); printf("%d\r", i); fflush(stdout); PAUSE(); } putchar('\n'); }