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("$Id$");
  37
  38 static unsigned
  39 read_words (const char *filename, char ***ret_w)
  40 {
  41     unsigned n, alloc;
  42     FILE *f;
  43     char buf[256];
  44     char **w = NULL;
  45
  46     f = fopen (filename, "r");
  47     if (f == NULL)
  48         err (1, "cannot open %s", filename);
  49     alloc = n = 0;
  50     while (fgets (buf, sizeof(buf), f) != NULL) {
  51         buf[strcspn(buf, "\r\n")] = '\0';
  52         if (n >= alloc) {
  53             alloc += 16;
  54             w = erealloc (w, alloc * sizeof(char **));
  55         }
  56         w[n++] = estrdup (buf);
  57     }
  58     *ret_w = w;
  59     if (n == 0)
  60         errx(1, "%s is an empty file, no words to try", filename);
  61     fclose(f);
  62     return n;
  63 }
  64
  65 static void
  66 generate_requests (const char *filename, unsigned nreq)
  67 {
  68     krb5_principal client;
  69     krb5_context context;
  70     krb5_error_code ret;
  71     krb5_creds cred;
  72     int i;
  73     char **words;
  74     unsigned nwords;
  75
  76     ret = krb5_init_context (&context);
  77     if (ret)
  78         errx (1, "krb5_init_context failed: %d", ret);
  79
  80     nwords = read_words (filename, &words);
  81
  82     for (i = 0; i < nreq; ++i) {
  83         char *name = words[rand() % nwords];
  84
  85         memset(&cred, 0, sizeof(cred));
  86
  87         ret = krb5_parse_name (context, name, &client);
  88         if (ret)
  89             krb5_err (context, 1, ret, "krb5_parse_name %s", name);
  90
  91         ret = krb5_get_init_creds_password (context, &cred, client, "",
  92                                             NULL, NULL, 0, NULL, NULL);
  93         if (ret)
  94             krb5_free_cred_contents (context, &cred);
  95         krb5_free_principal(context, client);
  96     }
  97 }
  98
  99 static int version_flag = 0;
 100 static int help_flag    = 0;
 101
 102 static struct getargs args[] = {
 103     { "version",        0,   arg_flag, &version_flag },
 104     { "help",           0,   arg_flag, &help_flag }
 105 };
 106
 107 static void
 108 usage (int ret)
 109 {
 110     arg_printusage (args,
 111                     sizeof(args)/sizeof(*args),
 112                     NULL,
 113                     "file number");
 114     exit (ret);
 115 }
 116
 117 int
 118 main(int argc, char **argv)
 119 {
 120     int optidx = 0;
 121     int nreq;
 122     char *end;
 123
 124     setprogname(argv[0]);
 125     if(getarg(args, sizeof(args) / sizeof(args[0]), argc, argv, &optidx))
 126         usage(1);
 127
 128     if (help_flag)
 129         usage (0);
 130
 131     if(version_flag) {
 132         print_version(NULL);
 133         exit(0);
 134     }
 135
 136     argc -= optidx;
 137     argv += optidx;
 138
 139     if (argc != 2)
 140         usage (1);
 141     srand (0);
 142     nreq = strtol (argv[1], &end, 0);
 143     if (argv[1] == end || *end != '\0')
 144         usage (1);
 145     generate_requests (argv[0], nreq);
 146     return 0;
 147 }