crypto/dist/heimdal/kuser/generate-requests.c

   1 /*
   2  * Copyright (c) 2000 - 2004 Kungliga Tekniska Högskolan
   3  * (Royal Institute of Technology, Stockholm, Sweden).
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  *
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * 3. Neither the name of the Institute nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 #include "kuser_locl.h"
  35
  36 __RCSID("$Heimdal: generate-requests.c 19233 2006-12-06 08:04:05Z lha $"
  37         "$NetBSD$");
  38
  39 static krb5_error_code
  40 null_key_proc (krb5_context context,
  41                krb5_enctype type,
  42                krb5_salt salt,
  43                krb5_const_pointer keyseed,
  44                krb5_keyblock **key)
  45 {
  46     return ENOTTY;
  47 }
  48
  49 static unsigned
  50 read_words (const char *filename, char ***ret_w)
  51 {
  52     unsigned n, alloc;
  53     FILE *f;
  54     char buf[256];
  55     char **w = NULL;
  56
  57     f = fopen (filename, "r");
  58     if (f == NULL)
  59         err (1, "cannot open %s", filename);
  60     alloc = n = 0;
  61     while (fgets (buf, sizeof(buf), f) != NULL) {
  62         buf[strcspn(buf, "\r\n")] = '\0';
  63         if (n >= alloc) {
  64             alloc += 16;
  65             w = erealloc (w, alloc * sizeof(char **));
  66         }
  67         w[n++] = estrdup (buf);
  68     }
  69     *ret_w = w;
  70     if (n == 0)
  71         errx(1, "%s is an empty file, no words to try", filename);
  72     return n;
  73 }
  74
  75 static void
  76 generate_requests (const char *filename, unsigned nreq)
  77 {
  78     krb5_context context;
  79     krb5_error_code ret;
  80     krb5_creds cred;
  81     int i;
  82     char **words;
  83     unsigned nwords;
  84
  85     ret = krb5_init_context (&context);
  86     if (ret)
  87         errx (1, "krb5_init_context failed: %d", ret);
  88
  89     nwords = read_words (filename, &words);
  90
  91     for (i = 0; i < nreq; ++i) {
  92         char *name = words[rand() % nwords];
  93         krb5_realm *client_realm;
  94
  95         memset(&cred, 0, sizeof(cred));
  96
  97         ret = krb5_parse_name (context, name, &cred.client);
  98         if (ret)
  99             krb5_err (context, 1, ret, "krb5_parse_name %s", name);
 100         client_realm = krb5_princ_realm (context, cred.client);
 101
 102         ret = krb5_make_principal(context, &cred.server, *client_realm,
 103                                   KRB5_TGS_NAME, *client_realm, NULL);
 104         if (ret)
 105             krb5_err (context, 1, ret, "krb5_make_principal");
 106
 107         ret = krb5_get_in_cred (context, 0, NULL, NULL, NULL, NULL,
 108                                 null_key_proc, NULL, NULL, NULL,
 109                                 &cred, NULL);
 110         krb5_free_cred_contents (context, &cred);
 111     }
 112 }
 113
 114 static int version_flag = 0;
 115 static int help_flag    = 0;
 116
 117 static struct getargs args[] = {
 118     { "version",        0,   arg_flag, &version_flag },
 119     { "help",           0,   arg_flag, &help_flag }
 120 };
 121
 122 static void
 123 usage (int ret)
 124 {
 125     arg_printusage (args,
 126                     sizeof(args)/sizeof(*args),
 127                     NULL,
 128                     "file number");
 129     exit (ret);
 130 }
 131
 132 int
 133 main(int argc, char **argv)
 134 {
 135     int optidx = 0;
 136     int nreq;
 137     char *end;
 138
 139     setprogname(argv[0]);
 140     if(getarg(args, sizeof(args) / sizeof(args[0]), argc, argv, &optidx))
 141         usage(1);
 142
 143     if (help_flag)
 144         usage (0);
 145
 146     if(version_flag) {
 147         print_version(NULL);
 148         exit(0);
 149     }
 150
 151     argc -= optidx;
 152     argv += optidx;
 153
 154     if (argc != 2)
 155         usage (1);
 156     srand (0);
 157     nreq = strtol (argv[1], &end, 0);
 158     if (argv[1] == end || *end != '\0')
 159         usage (1);
 160     generate_requests (argv[0], nreq);
 161     return 0;
 162 }