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
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}
146