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

  1/*
  2 * Copyright (c) 2000 - 2004 Kungliga Tekniska Hรถgskolan
  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
 36static unsigned
 37read_words (const char *filename, char ***ret_w)
 38{
 39    unsigned n, alloc;
 40    FILE *f;
 41    char buf[256];
 42    char **w = NULL;
 43
 44    f = fopen (filename, "r");
 45    if (f == NULL)
 46	err (1, "cannot open %s", filename);
 47    alloc = n = 0;
 48    while (fgets (buf, sizeof(buf), f) != NULL) {
 49	buf[strcspn(buf, "\r\n")] = '\0';
 50	if (n >= alloc) {
 51	    alloc += 16;
 52	    w = erealloc (w, alloc * sizeof(char **));
 53	}
 54	w[n++] = estrdup (buf);
 55    }
 56    *ret_w = w;
 57    if (n == 0)
 58	errx(1, "%s is an empty file, no words to try", filename);
 59    fclose(f);
 60    return n;
 61}
 62
 63static void
 64generate_requests (const char *filename, unsigned nreq)
 65{
 66    krb5_principal client;
 67    krb5_context context;
 68    krb5_error_code ret;
 69    krb5_creds cred;
 70    int i;
 71    char **words;
 72    unsigned nwords;
 73
 74    ret = krb5_init_context (&context);
 75    if (ret)
 76	errx (1, "krb5_init_context failed: %d", ret);
 77
 78    nwords = read_words (filename, &words);
 79
 80    for (i = 0; i < nreq; ++i) {
 81	char *name = words[rand() % nwords];
 82
 83	memset(&cred, 0, sizeof(cred));
 84
 85	ret = krb5_parse_name (context, name, &client);
 86	if (ret)
 87	    krb5_err (context, 1, ret, "krb5_parse_name %s", name);
 88
 89	ret = krb5_get_init_creds_password (context, &cred, client, "",
 90					    NULL, NULL, 0, NULL, NULL);
 91	if (ret)
 92	    krb5_free_cred_contents (context, &cred);
 93	krb5_free_principal(context, client);
 94    }
 95}
 96
 97static int version_flag	= 0;
 98static int help_flag	= 0;
 99
100static struct getargs args[] = {
101    { "version", 	0,   arg_flag, &version_flag },
102    { "help",		0,   arg_flag, &help_flag }
103};
104
105static void
106usage (int ret)
107{
108    arg_printusage (args,
109		    sizeof(args)/sizeof(*args),
110		    NULL,
111		    "file number");
112    exit (ret);
113}
114
115int
116main(int argc, char **argv)
117{
118    int optidx = 0;
119    int nreq;
120    char *end;
121
122    setprogname(argv[0]);
123    if(getarg(args, sizeof(args) / sizeof(args[0]), argc, argv, &optidx))
124	usage(1);
125
126    if (help_flag)
127	usage (0);
128
129    if(version_flag) {
130	print_version(NULL);
131	exit(0);
132    }
133
134    argc -= optidx;
135    argv += optidx;
136
137    if (argc != 2)
138	usage (1);
139    srand (0);
140    nreq = strtol (argv[1], &end, 0);
141    if (argv[1] == end || *end != '\0')
142	usage (1);
143    generate_requests (argv[0], nreq);
144    return 0;
145}