lib/kadm5/get_s.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 "kadm5_locl.h"
  35
  36 RCSID("$Id$");
  37
  38 static kadm5_ret_t
  39 add_tl_data(kadm5_principal_ent_t ent, int16_t type,
  40             const void *data, size_t size)
  41 {
  42     krb5_tl_data *tl;
  43
  44     tl = calloc(1, sizeof(*tl));
  45     if (tl == NULL)
  46         return _kadm5_error_code(ENOMEM);
  47
  48     tl->tl_data_type = type;
  49     tl->tl_data_length = size;
  50     tl->tl_data_contents = malloc(size);
  51     if (tl->tl_data_contents == NULL) {
  52         free(tl);
  53         return _kadm5_error_code(ENOMEM);
  54     }
  55     memcpy(tl->tl_data_contents, data, size);
  56
  57     tl->tl_data_next = ent->tl_data;
  58     ent->tl_data = tl;
  59     ent->n_tl_data++;
  60
  61     return 0;
  62 }
  63
  64 krb5_ssize_t KRB5_LIB_FUNCTION
  65 _krb5_put_int(void *buffer, unsigned long value, size_t size); /* XXX */
  66
  67 kadm5_ret_t
  68 kadm5_s_get_principal(void *server_handle,
  69                       krb5_principal princ,
  70                       kadm5_principal_ent_t out,
  71                       uint32_t mask)
  72 {
  73     kadm5_server_context *context = server_handle;
  74     kadm5_ret_t ret;
  75     hdb_entry_ex ent;
  76
  77     memset(&ent, 0, sizeof(ent));
  78     ret = context->db->hdb_open(context->context, context->db, O_RDONLY, 0);
  79     if(ret)
  80         return ret;
  81     ret = context->db->hdb_fetch(context->context, context->db, princ,
  82                                  HDB_F_DECRYPT|HDB_F_GET_ANY, &ent);
  83     context->db->hdb_close(context->context, context->db);
  84     if(ret)
  85         return _kadm5_error_code(ret);
  86
  87     memset(out, 0, sizeof(*out));
  88     if(mask & KADM5_PRINCIPAL)
  89         ret  = krb5_copy_principal(context->context, ent.entry.principal,
  90                                    &out->principal);
  91     if(ret)
  92         goto out;
  93     if(mask & KADM5_PRINC_EXPIRE_TIME && ent.entry.valid_end)
  94         out->princ_expire_time = *ent.entry.valid_end;
  95     if(mask & KADM5_PW_EXPIRATION && ent.entry.pw_end)
  96         out->pw_expiration = *ent.entry.pw_end;
  97     if(mask & KADM5_LAST_PWD_CHANGE)
  98         hdb_entry_get_pw_change_time(&ent.entry, &out->last_pwd_change);
  99     if(mask & KADM5_ATTRIBUTES){
 100         out->attributes |= ent.entry.flags.postdate ? 0 : KRB5_KDB_DISALLOW_POSTDATED;
 101         out->attributes |= ent.entry.flags.forwardable ? 0 : KRB5_KDB_DISALLOW_FORWARDABLE;
 102         out->attributes |= ent.entry.flags.initial ? KRB5_KDB_DISALLOW_TGT_BASED : 0;
 103         out->attributes |= ent.entry.flags.renewable ? 0 : KRB5_KDB_DISALLOW_RENEWABLE;
 104         out->attributes |= ent.entry.flags.proxiable ? 0 : KRB5_KDB_DISALLOW_PROXIABLE;
 105         out->attributes |= ent.entry.flags.invalid ? KRB5_KDB_DISALLOW_ALL_TIX : 0;
 106         out->attributes |= ent.entry.flags.require_preauth ? KRB5_KDB_REQUIRES_PRE_AUTH : 0;
 107         out->attributes |= ent.entry.flags.server ? 0 : KRB5_KDB_DISALLOW_SVR;
 108         out->attributes |= ent.entry.flags.change_pw ? KRB5_KDB_PWCHANGE_SERVICE : 0;
 109         out->attributes |= ent.entry.flags.ok_as_delegate ? KRB5_KDB_OK_AS_DELEGATE : 0;
 110         out->attributes |= ent.entry.flags.trusted_for_delegation ? KRB5_KDB_TRUSTED_FOR_DELEGATION : 0;
 111         out->attributes |= ent.entry.flags.allow_kerberos4 ? KRB5_KDB_ALLOW_KERBEROS4 : 0;
 112         out->attributes |= ent.entry.flags.allow_digest ? KRB5_KDB_ALLOW_DIGEST : 0;
 113     }
 114     if(mask & KADM5_MAX_LIFE) {
 115         if(ent.entry.max_life)
 116             out->max_life = *ent.entry.max_life;
 117         else
 118             out->max_life = INT_MAX;
 119     }
 120     if(mask & KADM5_MOD_TIME) {
 121         if(ent.entry.modified_by)
 122             out->mod_date = ent.entry.modified_by->time;
 123         else
 124             out->mod_date = ent.entry.created_by.time;
 125     }
 126     if(mask & KADM5_MOD_NAME) {
 127         if(ent.entry.modified_by) {
 128             if (ent.entry.modified_by->principal != NULL)
 129                 ret = krb5_copy_principal(context->context,
 130                                           ent.entry.modified_by->principal,
 131                                           &out->mod_name);
 132         } else if(ent.entry.created_by.principal != NULL)
 133             ret = krb5_copy_principal(context->context,
 134                                       ent.entry.created_by.principal,
 135                                       &out->mod_name);
 136         else
 137             out->mod_name = NULL;
 138     }
 139     if(ret)
 140         goto out;
 141
 142     if(mask & KADM5_KVNO)
 143         out->kvno = ent.entry.kvno;
 144     if(mask & KADM5_MKVNO) {
 145         int n;
 146         out->mkvno = 0; /* XXX */
 147         for(n = 0; n < ent.entry.keys.len; n++)
 148             if(ent.entry.keys.val[n].mkvno) {
 149                 out->mkvno = *ent.entry.keys.val[n].mkvno; /* XXX this isn't right */
 150                 break;
 151             }
 152     }
 153     if(mask & KADM5_AUX_ATTRIBUTES)
 154         /* XXX implement */;
 155     if(mask & KADM5_POLICY)
 156         out->policy = NULL;
 157     if(mask & KADM5_MAX_RLIFE) {
 158         if(ent.entry.max_renew)
 159             out->max_renewable_life = *ent.entry.max_renew;
 160         else
 161             out->max_renewable_life = INT_MAX;
 162     }
 163     if(mask & KADM5_LAST_SUCCESS)
 164         /* XXX implement */;
 165     if(mask & KADM5_LAST_FAILED)
 166         /* XXX implement */;
 167     if(mask & KADM5_FAIL_AUTH_COUNT)
 168         /* XXX implement */;
 169     if(mask & KADM5_KEY_DATA){
 170         int i;
 171         Key *key;
 172         krb5_key_data *kd;
 173         krb5_salt salt;
 174         krb5_data *sp;
 175         krb5_get_pw_salt(context->context, ent.entry.principal, &salt);
 176         out->key_data = malloc(ent.entry.keys.len * sizeof(*out->key_data));
 177         if (out->key_data == NULL) {
 178             ret = ENOMEM;
 179             goto out;
 180         }
 181         for(i = 0; i < ent.entry.keys.len; i++){
 182             key = &ent.entry.keys.val[i];
 183             kd = &out->key_data[i];
 184             kd->key_data_ver = 2;
 185             kd->key_data_kvno = ent.entry.kvno;
 186             kd->key_data_type[0] = key->key.keytype;
 187             if(key->salt)
 188                 kd->key_data_type[1] = key->salt->type;
 189             else
 190                 kd->key_data_type[1] = KRB5_PADATA_PW_SALT;
 191             /* setup key */
 192             kd->key_data_length[0] = key->key.keyvalue.length;
 193             kd->key_data_contents[0] = malloc(kd->key_data_length[0]);
 194             if(kd->key_data_contents[0] == NULL){
 195                 ret = ENOMEM;
 196                 break;
 197             }
 198             memcpy(kd->key_data_contents[0], key->key.keyvalue.data,
 199                    kd->key_data_length[0]);
 200             /* setup salt */
 201             if(key->salt)
 202                 sp = &key->salt->salt;
 203             else
 204                 sp = &salt.saltvalue;
 205             kd->key_data_length[1] = sp->length;
 206             kd->key_data_contents[1] = malloc(kd->key_data_length[1]);
 207             if(kd->key_data_length[1] != 0
 208                && kd->key_data_contents[1] == NULL) {
 209                 memset(kd->key_data_contents[0], 0, kd->key_data_length[0]);
 210                 ret = ENOMEM;
 211                 break;
 212             }
 213             memcpy(kd->key_data_contents[1], sp->data, kd->key_data_length[1]);
 214             out->n_key_data = i + 1;
 215         }
 216         krb5_free_salt(context->context, salt);
 217     }
 218     if(ret){
 219         kadm5_free_principal_ent(context, out);
 220         goto out;
 221     }
 222     if(mask & KADM5_TL_DATA) {
 223         time_t last_pw_expire;
 224         const HDB_Ext_Aliases *aliases;
 225
 226         ret = hdb_entry_get_pw_change_time(&ent.entry, &last_pw_expire);
 227         if (ret == 0 && last_pw_expire) {
 228             unsigned char buf[4];
 229             _krb5_put_int(buf, last_pw_expire, sizeof(buf));
 230             ret = add_tl_data(out, KRB5_TL_LAST_PWD_CHANGE, buf, sizeof(buf));
 231         }
 232         if(ret){
 233             kadm5_free_principal_ent(context, out);
 234             goto out;
 235         }
 236         /*
 237          * If the client was allowed to get key data, let it have the
 238          * password too.
 239          */
 240         if(mask & KADM5_KEY_DATA) {
 241             heim_utf8_string pw;
 242
 243             ret = hdb_entry_get_password(context->context,
 244                                          context->db, &ent.entry, &pw);
 245             if (ret == 0) {
 246                 ret = add_tl_data(out, KRB5_TL_PASSWORD, pw, strlen(pw) + 1);
 247                 free(pw);
 248             }
 249             krb5_clear_error_string(context->context);
 250             ret = 0;
 251         }
 252
 253         ret = hdb_entry_get_aliases(&ent.entry, &aliases);
 254         if (ret == 0 && aliases) {
 255             krb5_data buf;
 256             size_t len;
 257
 258             ASN1_MALLOC_ENCODE(HDB_Ext_Aliases, buf.data, buf.length,
 259                                aliases, &len, ret);
 260             if (ret) {
 261                 kadm5_free_principal_ent(context, out);
 262                 goto out;
 263             }
 264             if (len != buf.length)
 265                 krb5_abortx(context->context,
 266                             "internal ASN.1 encoder error");
 267             ret = add_tl_data(out, KRB5_TL_ALIASES, buf.data, buf.length);
 268             free(buf.data);
 269             if (ret) {
 270                 kadm5_free_principal_ent(context, out);
 271                 goto out;
 272             }
 273         }
 274         if(ret){
 275             kadm5_free_principal_ent(context, out);
 276             goto out;
 277         }
 278
 279     }
 280 out:
 281     hdb_free_entry(context->context, &ent);
 282
 283     return _kadm5_error_code(ret);
 284 }