1 /* $NetBSD: generate-requests.c,v 1.2 2017/01/28 21:31:45 christos Exp $ */
2
3 /*
4 * Copyright (c) 2000 - 2004 Kungliga Tekniska Högskolan
5 * (Royal Institute of Technology, Stockholm, Sweden).
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 *
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * 3. Neither the name of the Institute nor the names of its contributors
20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 */
35
36 #include "kuser_locl.h"
37
38 static unsigned
read_words(const char * filename,char *** ret_w)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
generate_requests(const char * filename,unsigned nreq)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 free(words);
98 }
99
100 static int version_flag = 0;
101 static int help_flag = 0;
102
103 static struct getargs args[] = {
104 { "version", 0, arg_flag, &version_flag, NULL, NULL },
105 { "help", 0, arg_flag, &help_flag, NULL, NULL }
106 };
107
108 static void
usage(int ret)109 usage (int ret)
110 {
111 arg_printusage (args,
112 sizeof(args)/sizeof(*args),
113 NULL,
114 "file number");
115 exit (ret);
116 }
117
118 int
main(int argc,char ** argv)119 main(int argc, char **argv)
120 {
121 int optidx = 0;
122 int nreq;
123 char *end;
124
125 setprogname(argv[0]);
126 if(getarg(args, sizeof(args) / sizeof(args[0]), argc, argv, &optidx))
127 usage(1);
128
129 if (help_flag)
130 usage (0);
131
132 if(version_flag) {
133 print_version(NULL);
134 exit(0);
135 }
136
137 argc -= optidx;
138 argv += optidx;
139
140 if (argc != 2)
141 usage (1);
142 srand (0);
143 nreq = strtol (argv[1], &end, 0);
144 if (argv[1] == end || *end != '\0')
145 usage (1);
146 generate_requests (argv[0], nreq);
147 return 0;
148 }
149