1 /*
2  * Copyright (c) 2000 - 2001 Kungliga Tekniska H�gskolan
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: generate-requests.c,v 1.4 2001/08/24 01:07:22 assar Exp $");
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 	if (buf[strlen (buf) - 1] == '\n')
62 	    buf[strlen (buf) - 1] = '\0';
63 	if (n >= alloc) {
64 	    alloc += 16;
65 	    w = erealloc (w, alloc * sizeof(char **));
66 	}
67 	w[n++] = estrdup (buf);
68     }
69     *ret_w = w;
70     return n;
71 }
72 
73 static void
74 generate_requests (const char *filename, unsigned nreq)
75 {
76     krb5_context context;
77     krb5_error_code ret;
78     krb5_creds cred;
79     int i;
80     char **words;
81     unsigned nwords;
82 
83     ret = krb5_init_context (&context);
84     if (ret)
85 	errx (1, "krb5_init_context failed: %d", ret);
86 
87     nwords = read_words (filename, &words);
88 
89     for (i = 0; i < nreq; ++i) {
90 	char *name = words[rand() % nwords];
91 	krb5_realm *client_realm;
92 
93 	memset(&cred, 0, sizeof(cred));
94 
95 	ret = krb5_parse_name (context, name, &cred.client);
96 	if (ret)
97 	    krb5_err (context, 1, ret, "krb5_parse_name %s", name);
98 	client_realm = krb5_princ_realm (context, cred.client);
99 
100 	ret = krb5_make_principal(context, &cred.server, *client_realm,
101 				  KRB5_TGS_NAME, *client_realm, NULL);
102 	if (ret)
103 	    krb5_err (context, 1, ret, "krb5_make_principal");
104 
105 	ret = krb5_get_in_cred (context, 0, NULL, NULL, NULL, NULL,
106 				null_key_proc, NULL, NULL, NULL,
107 				&cred, NULL);
108 	krb5_free_creds_contents (context, &cred);
109     }
110 }
111 
112 static int version_flag	= 0;
113 static int help_flag	= 0;
114 
115 static struct getargs args[] = {
116     { "version", 	0,   arg_flag, &version_flag },
117     { "help",		0,   arg_flag, &help_flag }
118 };
119 
120 static void
121 usage (int ret)
122 {
123     arg_printusage (args,
124 		    sizeof(args)/sizeof(*args),
125 		    NULL,
126 		    "file number");
127     exit (ret);
128 }
129 
130 int
131 main(int argc, char **argv)
132 {
133     int optind = 0;
134     int nreq;
135     char *end;
136 
137     setprogname(argv[0]);
138     if(getarg(args, sizeof(args) / sizeof(args[0]), argc, argv, &optind))
139 	usage(1);
140 
141     if (help_flag)
142 	usage (0);
143 
144     if(version_flag) {
145 	print_version(NULL);
146 	exit(0);
147     }
148 
149     argc -= optind;
150     argv += optind;
151 
152     if (argc != 2)
153 	usage (1);
154     srand (0);
155     nreq = strtol (argv[1], &end, 0);
156     if (argv[1] == end || *end != '\0')
157 	usage (1);
158     generate_requests (argv[0], nreq);
159     return 0;
160 }
161