1 /*	$NetBSD: generate-requests.c,v 1.1.1.1 2011/04/13 18:14:38 elric 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
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 }
148