diff options
Diffstat (limited to 'unmerged/test_ipv4.c')
| -rw-r--r-- | unmerged/test_ipv4.c | 165 |
1 files changed, 0 insertions, 165 deletions
diff --git a/unmerged/test_ipv4.c b/unmerged/test_ipv4.c deleted file mode 100644 index cf1646b..0000000 --- a/unmerged/test_ipv4.c +++ /dev/null @@ -1,165 +0,0 @@ -/* - * Regression test for bugs in ipv4 ip_offset and h_len handling, such as - * http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=418975 - * - * Copyright (c) 2009 Sam Roberts <sroberts@wurldtech.com> - * 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. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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. - * - */ -#if (HAVE_CONFIG_H) -#include "../include/config.h" -#endif -#include "./libnet_test.h" - -#include <assert.h> - -static void print_pblocks(libnet_t* l) -{ - libnet_pblock_t* p = l->protocol_blocks; - - while(p) { - /* h_len is header length for checksumming? "chksum length"? */ - printf(" tag %d flags %d type %20s/%#x buf %p b_len %2u h_len %2u ip_offset %2u, copied %2u\n", - p->ptag, p->flags, - libnet_diag_dump_pblock_type(p->type), p->type, - p->buf, p->b_len, p->h_len, p->ip_offset, p->copied); - p = p->next; - } - printf(" link_offset %d aligner %d total_size %u nblocks %d\n", - l->link_offset, l->aligner, l->total_size, l->n_pblocks); - -} - -static int build_ipv4(libnet_t* l, libnet_ptag_t ip_ptag, int payload_s) -{ - u_long src_ip = 0xf101f1f1; - u_long dst_ip = 0xf102f1f1; - u_int8_t* payload = malloc(payload_s); - assert(payload); - memset(payload, '\x00', payload_s); - - ip_ptag = libnet_build_ipv4( - LIBNET_IPV4_H + payload_s, /* length */ - 0, /* TOS */ - 0xbbbb, /* IP ID */ - 0, /* IP Frag */ - 0xcc, /* TTL */ - IPPROTO_UDP, /* protocol */ - 0, /* checksum */ - src_ip, /* source IP */ - dst_ip, /* destination IP */ - payload, /* payload */ - payload_s, /* payload size */ - l, /* libnet handle */ - ip_ptag); /* libnet id */ - - assert(ip_ptag > 0); - - free(payload); - - return ip_ptag; -} - -int -main(int argc, char *argv[]) -{ - libnet_t *l; - int r; - char *device = "eth0"; - u_int8_t enet_src[6] = {0x11, 0x11, 0x11, 0x11, 0x11, 0x11}; - u_int8_t enet_dst[6] = {0x22, 0x22, 0x22, 0x22, 0x22, 0x22}; - char errbuf[LIBNET_ERRBUF_SIZE]; - libnet_ptag_t ip_ptag = 0; - libnet_ptag_t eth_ptag = 0; - int pkt1_payload = 10; - u_int8_t* pkt1 = NULL; - u_int32_t pkt1_sz = 0; - struct libnet_ipv4_hdr* h1; - int pkt2_payload = 2; - u_int8_t* pkt2 = NULL; - u_int32_t pkt2_sz = 0; - struct libnet_ipv4_hdr* h2; - - - - l = libnet_init( LIBNET_LINK, device, errbuf); - - assert(l); - - /* Bug is triggered when rebuilding the ipv4 blocks with smaller payload. - * If change in payload size is larger than 20 (iph) + 14 (ether) + - * aligner, it will cause checksum to be written into the unallocated - * memory before the packet, possibly corrupting glib's memory allocation - * structures. - */ - - printf("Packet 1:\n"); - - ip_ptag = build_ipv4(l, ip_ptag, pkt1_payload); - - eth_ptag = libnet_build_ethernet( - enet_dst, /* ethernet destination */ - enet_src, /* ethernet source */ - ETHERTYPE_IP, /* protocol type */ - NULL, /* payload */ - 0, /* payload size */ - l, /* libnet handle */ - 0); /* libnet id */ - assert(eth_ptag > 0); - - r = libnet_pblock_coalesce(l, &pkt1, &pkt1_sz); - assert(r >= 0); - - print_pblocks(l); - - libnet_diag_dump_hex(pkt1, 14, 0, stdout); - libnet_diag_dump_hex(pkt1+14, pkt1_sz-14, 0, stdout); - - printf("Packet 2:\n"); - - ip_ptag = build_ipv4(l, ip_ptag, pkt2_payload); - - r = libnet_pblock_coalesce(l, &pkt2, &pkt2_sz); - assert(r >= 0); - - print_pblocks(l); - - libnet_diag_dump_hex(pkt2, 14, 0, stdout); - libnet_diag_dump_hex(pkt2+14, pkt2_sz-14, 0, stdout); - - /* Packets should differ only in the total length and cksum. */ - h1 = (struct libnet_ipv4_hdr*) (pkt1+14); - h2 = (struct libnet_ipv4_hdr*) (pkt2+14); - - assert(h1->ip_len == htons(20+pkt1_payload)); - assert(h2->ip_len == htons(20+pkt2_payload)); - - h1->ip_len = h2->ip_len = 0x5555; - h1->ip_sum = h2->ip_sum = 0x6666; - - assert(memcmp(pkt1, pkt2, 14 + 20) == 0); - - return (EXIT_SUCCESS); -} - |