kadmin/add-random-users.c

   1 /*
   2  * Copyright (c) 2000 - 2001 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 "kadmin_locl.h"
  35
  36 RCSID("$Id$");
  37
  38 #define WORDS_FILENAME "/usr/share/dict/words"
  39
  40 #define NUSERS 1000
  41
  42 #define WORDBUF_SIZE 65535
  43
  44 static unsigned
  45 read_words (const char *filename, char ***ret_w)
  46 {
  47     unsigned n, alloc;
  48     FILE *f;
  49     char buf[256];
  50     char **w = NULL;
  51     char *wbuf = NULL, *wptr = NULL, *wend = NULL;
  52
  53     f = fopen (filename, "r");
  54     if (f == NULL)
  55         err (1, "cannot open %s", filename);
  56     alloc = n = 0;
  57     while (fgets (buf, sizeof(buf), f) != NULL) {
  58         size_t len;
  59
  60         buf[strcspn(buf, "\r\n")] = '\0';
  61         if (n >= alloc) {
  62             alloc = max(alloc + 16, alloc * 2);
  63             w = erealloc (w, alloc * sizeof(char **));
  64         }
  65         len = strlen(buf);
  66         if (wptr + len + 1 >= wend) {
  67             wptr = wbuf = emalloc (WORDBUF_SIZE);
  68             wend = wbuf + WORDBUF_SIZE;
  69         }
  70         memmove (wptr, buf, len + 1);
  71         w[n++] = wptr;
  72         wptr += len + 1;
  73     }
  74     if (n == 0)
  75         errx(1, "%s is an empty file, no words to try", filename);
  76     *ret_w = w;
  77     return n;
  78 }
  79
  80 static void
  81 add_user (krb5_context context, void *kadm_handle,
  82           unsigned nwords, char **words)
  83 {
  84     kadm5_principal_ent_rec princ;
  85     char name[64];
  86     int r1, r2;
  87     krb5_error_code ret;
  88     int mask;
  89
  90     r1 = rand();
  91     r2 = rand();
  92
  93     snprintf (name, sizeof(name), "%s%d", words[r1 % nwords], r2 % 1000);
  94
  95     mask = KADM5_PRINCIPAL;
  96
  97     memset(&princ, 0, sizeof(princ));
  98     ret = krb5_parse_name(context, name, &princ.principal);
  99     if (ret)
 100         krb5_err(context, 1, ret, "krb5_parse_name");
 101
 102     ret = kadm5_create_principal (kadm_handle, &princ, mask, name);
 103     if (ret)
 104         krb5_err (context, 1, ret, "kadm5_create_principal");
 105     kadm5_free_principal_ent(kadm_handle, &princ);
 106     printf ("%s\n", name);
 107 }
 108
 109 static void
 110 add_users (const char *filename, unsigned n)
 111 {
 112     krb5_error_code ret;
 113     int i;
 114     void *kadm_handle;
 115     krb5_context context;
 116     unsigned nwords;
 117     char **words;
 118
 119     ret = krb5_init_context(&context);
 120     if (ret)
 121         errx (1, "krb5_init_context failed: %d", ret);
 122     ret = kadm5_s_init_with_password_ctx(context,
 123                                          KADM5_ADMIN_SERVICE,
 124                                          NULL,
 125                                          KADM5_ADMIN_SERVICE,
 126                                          NULL, 0, 0,
 127                                          &kadm_handle);
 128     if(ret)
 129         krb5_err(context, 1, ret, "kadm5_init_with_password");
 130
 131     nwords = read_words (filename, &words);
 132
 133     for (i = 0; i < n; ++i)
 134         add_user (context, kadm_handle, nwords, words);
 135     kadm5_destroy(kadm_handle);
 136     krb5_free_context(context);
 137 }
 138
 139 static int version_flag = 0;
 140 static int help_flag    = 0;
 141
 142 static struct getargs args[] = {
 143     { "version",        0,   arg_flag, &version_flag },
 144     { "help",           0,   arg_flag, &help_flag }
 145 };
 146
 147 static void
 148 usage (int ret)
 149 {
 150     arg_printusage (args,
 151                     sizeof(args)/sizeof(*args),
 152                     NULL,
 153                     "[filename [n]]");
 154     exit (ret);
 155 }
 156
 157 int
 158 main(int argc, char **argv)
 159 {
 160     int optidx = 0;
 161     int n = NUSERS;
 162     const char *filename = WORDS_FILENAME;
 163
 164     setprogname(argv[0]);
 165     if(getarg(args, sizeof(args) / sizeof(args[0]), argc, argv, &optidx))
 166         usage(1);
 167     if (help_flag)
 168         usage (0);
 169     if (version_flag) {
 170         print_version(NULL);
 171         return 0;
 172     }
 173     srand (0);
 174     argc -= optidx;
 175     argv += optidx;
 176
 177     if (argc > 0) {
 178         if (argc > 1)
 179             n = atoi(argv[1]);
 180         filename = argv[0];
 181     }
 182
 183     add_users (filename, n);
 184     return 0;
 185 }