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 krb5_error_code
  39 null_key_proc (krb5_context context,
  40                krb5_enctype type,
  41                krb5_salt salt,
  42                krb5_const_pointer keyseed,
  43                krb5_keyblock **key)
  44 {
  45     return ENOTTY;
  46 }
  47
  48 static unsigned
  49 read_words (const char *filename, char ***ret_w)
  50 {
  51     unsigned n, alloc;
  52     FILE *f;
  53     char buf[256];
  54     char **w = NULL;
  55
  56     f = fopen (filename, "r");
  57     if (f == NULL)
  58         err (1, "cannot open %s", filename);
  59     alloc = n = 0;
  60     while (fgets (buf, sizeof(buf), f) != NULL) {
  61         buf[strcspn(buf, "\r\n")] = '\0';
  62         if (n >= alloc) {
  63             alloc += 16;
  64             w = erealloc (w, alloc * sizeof(char **));
  65         }
  66         w[n++] = estrdup (buf);
  67     }
  68     *ret_w = w;
  69     if (n == 0)
  70         errx(1, "%s is an empty file, no words to try", filename);
  71     return n;
  72 }
  73
  74 static void
  75 generate_requests (const char *filename, unsigned nreq)
  76 {
  77     krb5_context context;
  78     krb5_error_code ret;
  79     krb5_creds cred;
  80     int i;
  81     char **words;
  82     unsigned nwords;
  83
  84     ret = krb5_init_context (&context);
  85     if (ret)
  86         errx (1, "krb5_init_context failed: %d", ret);
  87
  88     nwords = read_words (filename, &words);
  89
  90     for (i = 0; i < nreq; ++i) {
  91         char *name = words[rand() % nwords];
  92         krb5_realm *client_realm;
  93
  94         memset(&cred, 0, sizeof(cred));
  95
  96         ret = krb5_parse_name (context, name, &cred.client);
  97         if (ret)
  98             krb5_err (context, 1, ret, "krb5_parse_name %s", name);
  99         client_realm = krb5_princ_realm (context, cred.client);
 100
 101         ret = krb5_make_principal(context, &cred.server, *client_realm,
 102                                   KRB5_TGS_NAME, *client_realm, NULL);
 103         if (ret)
 104             krb5_err (context, 1, ret, "krb5_make_principal");
 105
 106         ret = krb5_get_in_cred (context, 0, NULL, NULL, NULL, NULL,
 107                                 null_key_proc, NULL, NULL, NULL,
 108                                 &cred, NULL);
 109         krb5_free_cred_contents (context, &cred);
 110     }
 111 }
 112
 113 static int version_flag = 0;
 114 static int help_flag    = 0;
 115
 116 static struct getargs args[] = {
 117     { "version",        0,   arg_flag, &version_flag },
 118     { "help",           0,   arg_flag, &help_flag }
 119 };
 120
 121 static void
 122 usage (int ret)
 123 {
 124     arg_printusage (args,
 125                     sizeof(args)/sizeof(*args),
 126                     NULL,
 127                     "file number");
 128     exit (ret);
 129 }
 130
 131 int
 132 main(int argc, char **argv)
 133 {
 134     int optidx = 0;
 135     int nreq;
 136     char *end;
 137
 138     setprogname(argv[0]);
 139     if(getarg(args, sizeof(args) / sizeof(args[0]), argc, argv, &optidx))
 140         usage(1);
 141
 142     if (help_flag)
 143         usage (0);
 144
 145     if(version_flag) {
 146         print_version(NULL);
 147         exit(0);
 148     }
 149
 150     argc -= optidx;
 151     argv += optidx;
 152
 153     if (argc != 2)
 154         usage (1);
 155     srand (0);
 156     nreq = strtol (argv[1], &end, 0);
 157     if (argv[1] == end || *end != '\0')
 158         usage (1);
 159     generate_requests (argv[0], nreq);
 160     return 0;
 161 }