kadmin/ank.c

   1 /*
   2  * Copyright (c) 1997-2006 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 /*
  38  * fetch the default principal corresponding to `princ'
  39  */
  40
  41 static krb5_error_code
  42 get_default (kadm5_server_context *contextp,
  43              krb5_principal princ,
  44              kadm5_principal_ent_t default_ent)
  45 {
  46     krb5_error_code ret;
  47     krb5_principal def_principal;
  48     krb5_const_realm realm = krb5_principal_get_realm(contextp->context, princ);
  49
  50     ret = krb5_make_principal (contextp->context, &def_principal,
  51                                realm, "default", NULL);
  52     if (ret)
  53         return ret;
  54     ret = kadm5_get_principal (contextp, def_principal, default_ent,
  55                                KADM5_PRINCIPAL_NORMAL_MASK);
  56     krb5_free_principal (contextp->context, def_principal);
  57     return ret;
  58 }
  59
  60 /*
  61  * Add the principal `name' to the database.
  62  * Prompt for all data not given by the input parameters.
  63  */
  64
  65 static krb5_error_code
  66 add_one_principal (const char *name,
  67                    int rand_key,
  68                    int rand_password,
  69                    int use_defaults,
  70                    char *password,
  71                    char *policy,
  72                    krb5_key_data *key_data,
  73                    const char *max_ticket_life,
  74                    const char *max_renewable_life,
  75                    const char *attributes,
  76                    const char *expiration,
  77                    const char *pw_expiration)
  78 {
  79     krb5_error_code ret;
  80     kadm5_principal_ent_rec princ, defrec;
  81     kadm5_principal_ent_rec *default_ent = NULL;
  82     krb5_principal princ_ent = NULL;
  83     int mask = 0;
  84     int default_mask = 0;
  85     char pwbuf[1024];
  86
  87     memset(&princ, 0, sizeof(princ));
  88     ret = krb5_parse_name(context, name, &princ_ent);
  89     if (ret) {
  90         krb5_warn(context, ret, "krb5_parse_name");
  91         return ret;
  92     }
  93     princ.principal = princ_ent;
  94     mask |= KADM5_PRINCIPAL;
  95
  96     ret = set_entry(context, &princ, &mask,
  97                     max_ticket_life, max_renewable_life,
  98                     expiration, pw_expiration, attributes, policy);
  99     if (ret)
 100         goto out;
 101
 102     default_ent = &defrec;
 103     ret = get_default (kadm_handle, princ_ent, default_ent);
 104     if (ret) {
 105         default_ent  = NULL;
 106         default_mask = 0;
 107     } else {
 108         default_mask = KADM5_ATTRIBUTES | KADM5_MAX_LIFE | KADM5_MAX_RLIFE |
 109             KADM5_PRINC_EXPIRE_TIME | KADM5_PW_EXPIRATION;
 110     }
 111
 112     if(use_defaults)
 113         set_defaults(&princ, &mask, default_ent, default_mask);
 114     else
 115         if(edit_entry(&princ, &mask, default_ent, default_mask))
 116             goto out;
 117     if(rand_key || key_data) {
 118         princ.attributes |= KRB5_KDB_DISALLOW_ALL_TIX;
 119         mask |= KADM5_ATTRIBUTES;
 120         random_password (pwbuf, sizeof(pwbuf));
 121         password = pwbuf;
 122     } else if (rand_password) {
 123         random_password (pwbuf, sizeof(pwbuf));
 124         password = pwbuf;
 125     } else if(password == NULL) {
 126         char *princ_name;
 127         char *prompt;
 128         int aret;
 129
 130         ret = krb5_unparse_name(context, princ_ent, &princ_name);
 131         if (ret)
 132             goto out;
 133         aret = asprintf (&prompt, "%s's Password: ", princ_name);
 134         free (princ_name);
 135         if (aret == -1) {
 136             ret = ENOMEM;
 137             krb5_set_error_message(context, ret, "out of memory");
 138             goto out;
 139         }
 140         ret = UI_UTIL_read_pw_string (pwbuf, sizeof(pwbuf), prompt, 1);
 141         free (prompt);
 142         if (ret) {
 143             ret = KRB5_LIBOS_BADPWDMATCH;
 144             krb5_set_error_message(context, ret, "failed to verify password");
 145             goto out;
 146         }
 147         password = pwbuf;
 148     }
 149
 150     ret = kadm5_create_principal(kadm_handle, &princ, mask, password);
 151     if(ret) {
 152         krb5_warn(context, ret, "kadm5_create_principal");
 153         goto out;
 154     }
 155     if(rand_key) {
 156         krb5_keyblock *new_keys;
 157         int n_keys, i;
 158         ret = kadm5_randkey_principal(kadm_handle, princ_ent,
 159                                       &new_keys, &n_keys);
 160         if(ret){
 161             krb5_warn(context, ret, "kadm5_randkey_principal");
 162             n_keys = 0;
 163         }
 164         for(i = 0; i < n_keys; i++)
 165             krb5_free_keyblock_contents(context, &new_keys[i]);
 166         if (n_keys > 0)
 167             free(new_keys);
 168         kadm5_get_principal(kadm_handle, princ_ent, &princ,
 169                             KADM5_PRINCIPAL | KADM5_KVNO | KADM5_ATTRIBUTES);
 170         princ.attributes &= (~KRB5_KDB_DISALLOW_ALL_TIX);
 171         /*
 172          * Updating kvno w/o key data and vice-versa gives _kadm5_setup_entry()
 173          * and _kadm5_set_keys2() headaches.  But we used to, so we handle
 174          * this in in those two functions.  Might as well leave this code as
 175          * it was then.
 176          */
 177         princ.kvno = 1;
 178         kadm5_modify_principal(kadm_handle, &princ,
 179                                KADM5_ATTRIBUTES | KADM5_KVNO);
 180     } else if (key_data) {
 181         ret = kadm5_chpass_principal_with_key (kadm_handle, princ_ent,
 182                                                3, key_data);
 183         if (ret) {
 184             krb5_warn(context, ret, "kadm5_chpass_principal_with_key");
 185         }
 186         kadm5_get_principal(kadm_handle, princ_ent, &princ,
 187                             KADM5_PRINCIPAL | KADM5_ATTRIBUTES);
 188         princ.attributes &= (~KRB5_KDB_DISALLOW_ALL_TIX);
 189         kadm5_modify_principal(kadm_handle, &princ, KADM5_ATTRIBUTES);
 190     } else if (rand_password) {
 191         char *princ_name;
 192
 193         krb5_unparse_name(context, princ_ent, &princ_name);
 194         printf ("added %s with password \"%s\"\n", princ_name, password);
 195         free (princ_name);
 196     }
 197 out:
 198     kadm5_free_principal_ent(kadm_handle, &princ); /* frees princ_ent */
 199     if(default_ent)
 200         kadm5_free_principal_ent (kadm_handle, default_ent);
 201     if (password != NULL)
 202         memset (password, 0, strlen(password));
 203     return ret;
 204 }
 205
 206 /*
 207  * parse the string `key_string' into `key', returning 0 iff succesful.
 208  */
 209
 210 /*
 211  * the ank command
 212  */
 213
 214 /*
 215  * Parse arguments and add all the principals.
 216  */
 217
 218 int
 219 add_new_key(struct add_options *opt, int argc, char **argv)
 220 {
 221     krb5_error_code ret = 0;
 222     int i;
 223     int num;
 224     krb5_key_data key_data[3];
 225     krb5_key_data *kdp = NULL;
 226
 227     num = 0;
 228     if (opt->random_key_flag)
 229         ++num;
 230     if (opt->random_password_flag)
 231         ++num;
 232     if (opt->password_string)
 233         ++num;
 234     if (opt->key_string)
 235         ++num;
 236
 237     if (num > 1) {
 238         fprintf (stderr, "give only one of "
 239                 "--random-key, --random-password, --password, --key\n");
 240         return 1;
 241     }
 242
 243     if (opt->key_string) {
 244         const char *error;
 245
 246         if (parse_des_key (opt->key_string, key_data, &error)) {
 247             fprintf (stderr, "failed parsing key \"%s\": %s\n",
 248                      opt->key_string, error);
 249             return 1;
 250         }
 251         kdp = key_data;
 252     }
 253
 254     for(i = 0; i < argc; i++) {
 255         ret = add_one_principal (argv[i],
 256                                  opt->random_key_flag,
 257                                  opt->random_password_flag,
 258                                  opt->use_defaults_flag,
 259                                  opt->password_string,
 260                                  opt->policy_string,
 261                                  kdp,
 262                                  opt->max_ticket_life_string,
 263                                  opt->max_renewable_life_string,
 264                                  opt->attributes_string,
 265                                  opt->expiration_time_string,
 266                                  opt->pw_expiration_time_string);
 267         if (ret) {
 268             krb5_warn (context, ret, "adding %s", argv[i]);
 269             break;
 270         }
 271     }
 272     if (kdp) {
 273         int16_t dummy = 3;
 274         kadm5_free_key_data (kadm_handle, &dummy, key_data);
 275     }
 276     return ret != 0;
 277 }