sbin/ping/tests/in_cksum_test.c

   1 /*-
   2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
   3  *
   4  * Copyright (C) 2019 Jan Sucan <jansucan@FreeBSD.org>
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  26  * SUCH DAMAGE.
  27  */
  28
  29 #include <sys/cdefs.h>
  30 __FBSDID("$FreeBSD$");
  31
  32 #include <sys/param.h>
  33
  34 #include <atf-c.h>
  35
  36 #include "../utils.h"
  37
  38 /*
  39  * Test cases.
  40  */
  41
  42 ATF_TC_WITHOUT_HEAD(aligned_even_length_big_endian);
  43 ATF_TC_BODY(aligned_even_length_big_endian, tc)
  44 {
  45         u_char data[] __aligned(sizeof(u_short)) =
  46                 {0x12, 0x34, 0x56, 0x78};
  47         u_short sum;
  48
  49         sum = in_cksum(data, nitems(data));
  50         ATF_REQUIRE(sum == 0x5397);
  51 }
  52
  53 ATF_TC_WITHOUT_HEAD(aligned_odd_length_big_endian);
  54 ATF_TC_BODY(aligned_odd_length_big_endian, tc)
  55 {
  56         u_char data[] __aligned(sizeof(u_short)) =
  57                 {0x12, 0x34, 0x56, 0x78, 0x9a};
  58         u_short sum;
  59
  60         sum = in_cksum(data, nitems(data));
  61         ATF_REQUIRE(sum == 0x52fd);
  62 }
  63
  64 ATF_TC_WITHOUT_HEAD(aligned_even_length_little_endian);
  65 ATF_TC_BODY(aligned_even_length_little_endian, tc)
  66 {
  67         u_char data[] __aligned(sizeof(u_short)) =
  68                 {0x34, 0x12, 0x78, 0x56};
  69         u_short sum;
  70
  71         sum = in_cksum(data, nitems(data));
  72         ATF_REQUIRE_MSG(sum == 0x9753, "%d", sum);
  73 }
  74
  75 ATF_TC_WITHOUT_HEAD(aligned_odd_length_little_endian);
  76 ATF_TC_BODY(aligned_odd_length_little_endian, tc)
  77 {
  78         u_char data[] __aligned(sizeof(u_short)) =
  79                 {0x34, 0x12, 0x78, 0x56, 0x00, 0x9a};
  80         u_short sum;
  81
  82         sum = in_cksum(data, nitems(data));
  83         ATF_REQUIRE(sum == 0xfd52);
  84 }
  85
  86 ATF_TC_WITHOUT_HEAD(unaligned_even_length_big_endian);
  87 ATF_TC_BODY(unaligned_even_length_big_endian, tc)
  88 {
  89         u_char data[] __aligned(sizeof(u_short)) =
  90                 {0x00, 0x12, 0x34, 0x56, 0x78};
  91         u_short sum;
  92
  93         sum = in_cksum(data + 1, nitems(data) - 1);
  94         ATF_REQUIRE(sum == 0x5397);
  95 }
  96
  97 ATF_TC_WITHOUT_HEAD(unaligned_odd_length_big_endian);
  98 ATF_TC_BODY(unaligned_odd_length_big_endian, tc)
  99 {
 100         u_char data[] __aligned(sizeof(u_short)) =
 101                 {0x00, 0x12, 0x34, 0x56, 0x78, 0x9a};
 102         u_short sum;
 103
 104         sum = in_cksum(data + 1, nitems(data) - 1);
 105         ATF_REQUIRE(sum == 0x52fd);
 106 }
 107
 108 ATF_TC_WITHOUT_HEAD(unaligned_even_length_little_endian);
 109 ATF_TC_BODY(unaligned_even_length_little_endian, tc)
 110 {
 111         u_char data[] __aligned(sizeof(u_short)) =
 112                 {0x00, 0x34, 0x12, 0x78, 0x56};
 113         u_short sum;
 114
 115         sum = in_cksum(data + 1, nitems(data) - 1);
 116         ATF_REQUIRE_MSG(sum == 0x9753, "%d", sum);
 117 }
 118
 119 ATF_TC_WITHOUT_HEAD(unaligned_odd_length_little_endian);
 120 ATF_TC_BODY(unaligned_odd_length_little_endian, tc)
 121 {
 122         u_char data[] __aligned(sizeof(u_short)) =
 123                 {0x00, 0x34, 0x12, 0x78, 0x56, 0x00, 0x9a};
 124         u_short sum;
 125
 126         sum = in_cksum(data + 1, nitems(data) - 1);
 127         ATF_REQUIRE(sum == 0xfd52);
 128 }
 129
 130 /*
 131  * Main.
 132  */
 133
 134 ATF_TP_ADD_TCS(tp)
 135 {
 136         ATF_TP_ADD_TC(tp, aligned_even_length_big_endian);
 137         ATF_TP_ADD_TC(tp, aligned_odd_length_big_endian);
 138         ATF_TP_ADD_TC(tp, aligned_even_length_little_endian);
 139         ATF_TP_ADD_TC(tp, aligned_odd_length_little_endian);
 140         ATF_TP_ADD_TC(tp, unaligned_even_length_big_endian);
 141         ATF_TP_ADD_TC(tp, unaligned_odd_length_big_endian);
 142         ATF_TP_ADD_TC(tp, unaligned_even_length_little_endian);
 143         ATF_TP_ADD_TC(tp, unaligned_odd_length_little_endian);
 144
 145         return (atf_no_error());
 146 }