crypto/dist/heimdal/kadmin/cpw.c

   1 /*
   2  * Copyright (c) 1997 - 2004 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 #include "kadmin-commands.h"
  36
  37 __RCSID("$Heimdal: cpw.c 16755 2006-02-18 23:30:32Z lha $"
  38         "$NetBSD$");
  39
  40 struct cpw_entry_data {
  41     int random_key;
  42     int random_password;
  43     char *password;
  44     krb5_key_data *key_data;
  45 };
  46
  47 static int
  48 set_random_key (krb5_principal principal)
  49 {
  50     krb5_error_code ret;
  51     int i;
  52     krb5_keyblock *keys;
  53     int num_keys;
  54
  55     ret = kadm5_randkey_principal(kadm_handle, principal, &keys, &num_keys);
  56     if(ret)
  57         return ret;
  58     for(i = 0; i < num_keys; i++)
  59         krb5_free_keyblock_contents(context, &keys[i]);
  60     free(keys);
  61     return 0;
  62 }
  63
  64 static int
  65 set_random_password (krb5_principal principal)
  66 {
  67     krb5_error_code ret;
  68     char pw[128];
  69
  70     random_password (pw, sizeof(pw));
  71     ret = kadm5_chpass_principal(kadm_handle, principal, pw);
  72     if (ret == 0) {
  73         char *princ_name;
  74
  75         krb5_unparse_name(context, principal, &princ_name);
  76
  77         printf ("%s's password set to \"%s\"\n", princ_name, pw);
  78         free (princ_name);
  79     }
  80     memset (pw, 0, sizeof(pw));
  81     return ret;
  82 }
  83
  84 static int
  85 set_password (krb5_principal principal, char *password)
  86 {
  87     krb5_error_code ret = 0;
  88     char pwbuf[128];
  89
  90     if(password == NULL) {
  91         char *princ_name;
  92         char *prompt;
  93
  94         krb5_unparse_name(context, principal, &princ_name);
  95         asprintf(&prompt, "%s's Password: ", princ_name);
  96         free (princ_name);
  97         ret = UI_UTIL_read_pw_string(pwbuf, sizeof(pwbuf), prompt, 1);
  98         free (prompt);
  99         if(ret){
 100             return 0; /* XXX error code? */
 101         }
 102         password = pwbuf;
 103     }
 104     if(ret == 0)
 105         ret = kadm5_chpass_principal(kadm_handle, principal, password);
 106     memset(pwbuf, 0, sizeof(pwbuf));
 107     return ret;
 108 }
 109
 110 static int
 111 set_key_data (krb5_principal principal, krb5_key_data *key_data)
 112 {
 113     krb5_error_code ret;
 114
 115     ret = kadm5_chpass_principal_with_key (kadm_handle, principal,
 116                                            3, key_data);
 117     return ret;
 118 }
 119
 120 static int
 121 do_cpw_entry(krb5_principal principal, void *data)
 122 {
 123     struct cpw_entry_data *e = data;
 124
 125     if (e->random_key)
 126         return set_random_key (principal);
 127     else if (e->random_password)
 128         return set_random_password (principal);
 129     else if (e->key_data)
 130         return set_key_data (principal, e->key_data);
 131     else
 132         return set_password (principal, e->password);
 133 }
 134
 135 int
 136 cpw_entry(struct passwd_options *opt, int argc, char **argv)
 137 {
 138     krb5_error_code ret = 0;
 139     int i;
 140     struct cpw_entry_data data;
 141     int num;
 142     krb5_key_data key_data[3];
 143
 144     data.random_key = opt->random_key_flag;
 145     data.random_password = opt->random_password_flag;
 146     data.password = opt->password_string;
 147     data.key_data        = NULL;
 148
 149     num = 0;
 150     if (data.random_key)
 151         ++num;
 152     if (data.random_password)
 153         ++num;
 154     if (data.password)
 155         ++num;
 156     if (opt->key_string)
 157         ++num;
 158
 159     if (num > 1) {
 160         fprintf (stderr, "give only one of "
 161                 "--random-key, --random-password, --password, --key\n");
 162         return 1;
 163     }
 164
 165     if (opt->key_string) {
 166         const char *error;
 167
 168         if (parse_des_key (opt->key_string, key_data, &error)) {
 169             fprintf (stderr, "failed parsing key \"%s\": %s\n",
 170                      opt->key_string, error);
 171             return 1;
 172         }
 173         data.key_data = key_data;
 174     }
 175
 176     for(i = 0; i < argc; i++)
 177         ret = foreach_principal(argv[i], do_cpw_entry, "cpw", &data);
 178
 179     if (data.key_data) {
 180         int16_t dummy;
 181         kadm5_free_key_data (kadm_handle, &dummy, key_data);
 182     }
 183
 184     return ret != 0;
 185 }