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Diffstat (limited to 'tests/sys/netinet/libalias/util.h')
| -rw-r--r-- | tests/sys/netinet/libalias/util.h | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/tests/sys/netinet/libalias/util.h b/tests/sys/netinet/libalias/util.h new file mode 100644 index 000000000000..f58a1ad26248 --- /dev/null +++ b/tests/sys/netinet/libalias/util.h @@ -0,0 +1,137 @@ +/* + * SPDX-License-Identifier: BSD-3-Clause + * + * Copyright 2021 Lutz Donnerhacke + * + * 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. + * 3. Neither the name of the copyright holder nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT HOLDER 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. + */ +#include <sys/types.h> + +#include <arpa/inet.h> +#include <netinet/ip.h> +#include <netinet/udp.h> + +#ifndef _UTIL_H +#define _UTIL_H + +/* common ip ranges */ +extern struct in_addr masq, pub, pub2, prv1, prv2, prv3, cgn, ext, ANY_ADDR; + +int randcmp(const void *a, const void *b); +void hexdump(void *p, size_t len); +struct ip * ip_packet(u_char protocol, size_t len); +struct udphdr * set_udp(struct ip *p, u_short sport, u_short dport); + +static inline int +addr_eq(struct in_addr a, struct in_addr b) +{ + return a.s_addr == b.s_addr; +} + +#define a2h(a) ntohl(a.s_addr) + +static inline int +rand_range(int min, int max) +{ + return min + rand()%(max - min); +} + +#define NAT_CHECK(pip, src, dst, msq) do { \ + int res; \ + int len = ntohs(pip->ip_len); \ + pip->ip_src = src; \ + pip->ip_dst = dst; \ + res = LibAliasOut(la, pip, len); \ + ATF_CHECK_MSG(res == PKT_ALIAS_OK, \ + ">%d< not met PKT_ALIAS_OK", res); \ + ATF_CHECK(addr_eq(msq, pip->ip_src)); \ + ATF_CHECK(addr_eq(dst, pip->ip_dst)); \ +} while(0) + +#define NAT_FAIL(pip, src, dst) do { \ + int res; \ + int len = ntohs(pip->ip_len); \ + pip->ip_src = src; \ + pip->ip_dst = dst; \ + res = LibAliasOut(la, pip, len); \ + ATF_CHECK_MSG(res != PKT_ALIAS_OK, \ + ">%d< not met !PKT_ALIAS_OK", res); \ + ATF_CHECK(addr_eq(src, pip->ip_src)); \ + ATF_CHECK(addr_eq(dst, pip->ip_dst)); \ +} while(0) + +#define UNNAT_CHECK(pip, src, dst, rel) do { \ + int res; \ + int len = ntohs(pip->ip_len); \ + pip->ip_src = src; \ + pip->ip_dst = dst; \ + res = LibAliasIn(la, pip, len); \ + ATF_CHECK_MSG(res == PKT_ALIAS_OK, \ + ">%d< not met PKT_ALIAS_OK", res); \ + ATF_CHECK(addr_eq(src, pip->ip_src)); \ + ATF_CHECK(addr_eq(rel, pip->ip_dst)); \ +} while(0) + +#define UNNAT_FAIL(pip, src, dst) do { \ + int res; \ + int len = ntohs(pip->ip_len); \ + pip->ip_src = src; \ + pip->ip_dst = dst; \ + res = LibAliasIn(la, pip, len); \ + ATF_CHECK_MSG(res != PKT_ALIAS_OK, \ + ">%d< not met !PKT_ALIAS_OK", res); \ + ATF_CHECK(addr_eq(src, pip->ip_src)); \ + ATF_CHECK(addr_eq(dst, pip->ip_dst)); \ +} while(0) + +#define UDP_NAT_CHECK(p, u, si, sp, di, dp, mi) do { \ + u = set_udp(p, (sp), (dp)); \ + NAT_CHECK(p, (si), (di), (mi)); \ + ATF_CHECK(u->uh_dport == htons(dp)); \ +} while(0) + +#define UDP_NAT_FAIL(p, u, si, sp, di, dp) do { \ + u = set_udp(p, (sp), (dp)); \ + NAT_FAIL(p, (si), (di)); \ +} while(0) + +#define UDP_UNNAT_CHECK(p, u, si, sp, mi, mp, di, dp) \ +do { \ + u = set_udp(p, (sp), (mp)); \ + UNNAT_CHECK(p, (si), (mi), (di)); \ + ATF_CHECK(u->uh_sport == htons(sp)); \ + ATF_CHECK(u->uh_dport == htons(dp)); \ +} while(0) + +#define UDP_UNNAT_FAIL(p, u, si, sp, mi, mp) do { \ + u = set_udp(p, (sp), (mp)); \ + UNNAT_FAIL(p, (si), (mi)); \ +} while(0) + +#endif /* _UTIL_H */ |