crypto/external/bsd/heimdal/dist/lib/roken/parse_reply-test.c

   1 /*      $NetBSD: parse_reply-test.c,v 1.1.1.1 2011/04/13 18:15:42 elric Exp $   */
   2
   3 /*
   4  * Copyright (c) 2002 Kungliga Tekniska Högskolan
   5  * (Royal Institute of Technology, Stockholm, Sweden).
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  *
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  *
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * 3. Neither the name of the Institute nor the names of its contributors
  20  *    may be used to endorse or promote products derived from this software
  21  *    without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33  * SUCH DAMAGE.
  34  */
  35
  36 #include <config.h>
  37
  38 #include <sys/types.h>
  39 #ifdef HAVE_SYS_MMAN_H
  40 #include <sys/mman.h>
  41 #endif
  42 #include <fcntl.h>
  43
  44 #include <krb5/roken.h>
  45 #include <krb5/resolve.h>
  46
  47 struct dns_reply*
  48 parse_reply(const unsigned char *, size_t);
  49
  50 enum { MAX_BUF = 36};
  51
  52 static struct testcase {
  53     unsigned char buf[MAX_BUF];
  54     size_t buf_len;
  55 } tests[] = {
  56     {{0x12, 0x67, 0x84, 0x00, 0x00, 0x01, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00,
  57      0x03, 'f', 'o', 'o', 0x00,
  58      0x00, 0x10, 0x00, 0x01,
  59      0x03, 'f', 'o', 'o', 0x00,
  60      0x00, 0x10, 0x00, 0x01,
  61       0x00, 0x00, 0x12, 0x67, 0xff, 0xff}, 36}
  62 };
  63
  64 #ifndef MAP_FAILED
  65 #define MAP_FAILED (-1)
  66 #endif
  67
  68 static sig_atomic_t val = 0;
  69
  70 static RETSIGTYPE
  71 segv_handler(int sig)
  72 {
  73     val = 1;
  74 }
  75
  76 int
  77 main(int argc, char **argv)
  78 {
  79 #ifndef HAVE_MMAP
  80     return 77;                  /* signal to automake that this test
  81                                    cannot be run */
  82 #else /* HAVE_MMAP */
  83     int ret;
  84     int i;
  85     struct sigaction sa;
  86
  87     sigemptyset (&sa.sa_mask);
  88     sa.sa_flags = 0;
  89     sa.sa_handler = segv_handler;
  90     sigaction (SIGSEGV, &sa, NULL);
  91
  92     for (i = 0; val == 0 && i < sizeof(tests)/sizeof(tests[0]); ++i) {
  93         const struct testcase *t = &tests[i];
  94         unsigned char *p1, *p2;
  95         int flags;
  96         int fd;
  97         size_t pagesize = getpagesize();
  98         unsigned char *buf;
  99
 100 #ifdef MAP_ANON
 101         flags = MAP_ANON;
 102         fd = -1;
 103 #else
 104         flags = 0;
 105         fd = open ("/dev/zero", O_RDONLY);
 106         if(fd < 0)
 107             err (1, "open /dev/zero");
 108 #endif
 109         flags |= MAP_PRIVATE;
 110
 111         p1 = (unsigned char *)mmap(0, 2 * pagesize, PROT_READ | PROT_WRITE,
 112                   flags, fd, 0);
 113         if (p1 == (unsigned char *)MAP_FAILED)
 114             err (1, "mmap");
 115         p2 = p1 + pagesize;
 116         ret = mprotect ((void *)p2, pagesize, 0);
 117         if (ret < 0)
 118             err (1, "mprotect");
 119         buf = p2 - t->buf_len;
 120         memcpy (buf, t->buf, t->buf_len);
 121         parse_reply (buf, t->buf_len);
 122         ret = munmap ((void *)p1, 2 * pagesize);
 123         if (ret < 0)
 124             err (1, "munmap");
 125     }
 126     return val;
 127 #endif /* HAVE_MMAP */
 128 }