1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
|
/*
* Copyright (c) 2000 - 2001 Kungliga Tekniska Högskolan
* (Royal Institute of Technology, Stockholm, Sweden).
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "kadmin_locl.h"
#define WORDS_FILENAME "/usr/share/dict/words"
#define NUSERS 1000
#define WORDBUF_SIZE 65535
static unsigned
read_words (const char *filename, char ***ret_w)
{
unsigned n, alloc;
FILE *f;
char buf[256];
char **w = NULL;
char *wbuf = NULL, *wptr = NULL, *wend = NULL;
f = fopen (filename, "r");
if (f == NULL)
err (1, "cannot open %s", filename);
alloc = n = 0;
while (fgets (buf, sizeof(buf), f) != NULL) {
size_t len;
buf[strcspn(buf, "\r\n")] = '\0';
if (n >= alloc) {
alloc = max(alloc + 16, alloc * 2);
w = erealloc (w, alloc * sizeof(char *));
}
len = strlen(buf);
if (wptr + len + 1 >= wend) {
wptr = wbuf = emalloc (WORDBUF_SIZE);
wend = wbuf + WORDBUF_SIZE;
}
memmove (wptr, buf, len + 1);
w[n++] = wptr;
wptr += len + 1;
}
if (n == 0)
errx(1, "%s is an empty file, no words to try", filename);
*ret_w = w;
fclose(f);
return n;
}
static void
add_user (krb5_context ctx, void *hndl, unsigned nwords, char **words)
{
kadm5_principal_ent_rec princ;
char name[64];
int r1, r2;
krb5_error_code ret;
int mask;
r1 = rand();
r2 = rand();
snprintf (name, sizeof(name), "%s%d", words[r1 % nwords], r2 % 1000);
mask = KADM5_PRINCIPAL;
memset(&princ, 0, sizeof(princ));
ret = krb5_parse_name(ctx, name, &princ.principal);
if (ret)
krb5_err(ctx, 1, ret, "krb5_parse_name");
ret = kadm5_create_principal (hndl, &princ, mask, name);
if (ret)
krb5_err (ctx, 1, ret, "kadm5_create_principal");
kadm5_free_principal_ent(hndl, &princ);
printf ("%s\n", name);
}
static void
add_users (const char *filename, unsigned n)
{
krb5_error_code ret;
int i;
void *hndl;
krb5_context ctx;
unsigned nwords;
char **words;
ret = krb5_init_context(&ctx);
if (ret)
errx (1, "krb5_init_context failed: %d", ret);
ret = kadm5_s_init_with_password_ctx(ctx,
KADM5_ADMIN_SERVICE,
NULL,
KADM5_ADMIN_SERVICE,
NULL, 0, 0,
&hndl);
if(ret)
krb5_err(ctx, 1, ret, "kadm5_init_with_password");
nwords = read_words (filename, &words);
for (i = 0; i < n; ++i)
add_user (ctx, hndl, nwords, words);
kadm5_destroy(hndl);
krb5_free_context(ctx);
free(words);
}
static int version_flag = 0;
static int help_flag = 0;
static struct getargs args[] = {
{ "version", 0, arg_flag, &version_flag, NULL, NULL },
{ "help", 0, arg_flag, &help_flag, NULL, NULL }
};
static void
usage (int ret)
{
arg_printusage (args,
sizeof(args)/sizeof(*args),
NULL,
"[filename [n]]");
exit (ret);
}
int
main(int argc, char **argv)
{
int optidx = 0;
int n = NUSERS;
const char *filename = WORDS_FILENAME;
setprogname(argv[0]);
if(getarg(args, sizeof(args) / sizeof(args[0]), argc, argv, &optidx))
usage(1);
if (help_flag)
usage (0);
if (version_flag) {
print_version(NULL);
return 0;
}
srand (0);
argc -= optidx;
argv += optidx;
if (argc > 0) {
if (argc > 1)
n = atoi(argv[1]);
filename = argv[0];
}
add_users (filename, n);
return 0;
}
|
