mirror of
https://github.com/freebsd/freebsd-src
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f1462ab051
Rework the tests to check the correct layer in a single test. Factor out tests for reuse in other modules. MFC after: 1 week Differential Revision: https://reviews.freebsd.org/D30412
123 lines
3.3 KiB
C
123 lines
3.3 KiB
C
/*
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright 2021 Lutz Donnerhacke
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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* 3. Neither the name of the copyright holder nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
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* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
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* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
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* TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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* THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <netinet/in.h>
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#include "util.h"
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/* common ip ranges */
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struct in_addr masq = { htonl(0x01020304) };
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struct in_addr pub = { htonl(0x0102dead) };
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struct in_addr prv1 = { htonl(0x0a00dead) };
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struct in_addr prv2 = { htonl(0xac10dead) };
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struct in_addr prv3 = { htonl(0xc0a8dead) };
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struct in_addr cgn = { htonl(0x6440dead) };
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struct in_addr ext = { htonl(0x12345678) };
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struct in_addr ANY_ADDR = { 0 };
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#define REQUIRE(x) do { \
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if (!(x)) { \
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fprintf(stderr, "Failed in %s %s:%d.\n",\
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__FUNCTION__, __FILE__, __LINE__); \
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exit(-1); \
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} \
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} while(0)
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int
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randcmp(const void *a, const void *b)
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{
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int res, r = rand();
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(void)a;
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(void)b;
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res = (r/4 < RAND_MAX/9) ? 1
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: (r/5 < RAND_MAX/9) ? 0
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: -1;
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return (res);
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}
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void
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hexdump(void *p, size_t len)
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{
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size_t i;
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unsigned char *c = p;
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for (i = 0; i < len; i++) {
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printf(" %02x", c[i]);
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switch (i & 0xf) {
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case 0xf: printf("\n"); break;
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case 0x7: printf(" "); break;
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default: break;
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}
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}
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if ((i & 0xf) != 0x0)
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printf("\n");
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}
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struct ip *
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ip_packet(u_char protocol, size_t len)
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{
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struct ip * p;
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REQUIRE(len >= 64 && len <= IP_MAXPACKET);
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p = calloc(1, len);
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REQUIRE(p != NULL);
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p->ip_v = IPVERSION;
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p->ip_hl = sizeof(*p)/4;
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p->ip_len = htons(len);
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p->ip_ttl = IPDEFTTL;
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p->ip_p = protocol;
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REQUIRE(p->ip_hl == 5);
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return (p);
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}
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struct udphdr *
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set_udp(struct ip *p, u_short sport, u_short dport) {
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uint32_t *up = (void *)p;
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struct udphdr *u = (void *)&(up[p->ip_hl]);
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int payload = ntohs(p->ip_len) - 4*p->ip_hl;
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REQUIRE(payload >= (int)sizeof(*u));
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p->ip_p = IPPROTO_UDP;
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u->uh_sport = htons(sport);
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u->uh_dport = htons(dport);
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u->uh_ulen = htons(payload);
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return (u);
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}
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