0e8c4ccc6e
Remove hdb_entry_ex and revert to the original design of hdb_entry (except with an additional context member in hdb_entry which is managed by the free_entry method in HDB).
411 lines
13 KiB
C
411 lines
13 KiB
C
/*
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* Copyright (c) 1997 - 2006 Kungliga Tekniska Högskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <krb5_locl.h>
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#include "kadm5_locl.h"
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#include <assert.h>
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RCSID("$Id$");
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static kadm5_ret_t
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add_tl_data(kadm5_principal_ent_t ent, int16_t type,
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const void *data, size_t size)
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{
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krb5_tl_data *tl;
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tl = calloc(1, sizeof(*tl));
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if (tl == NULL)
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return _kadm5_error_code(ENOMEM);
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tl->tl_data_type = type;
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tl->tl_data_length = size;
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tl->tl_data_contents = malloc(size);
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if (tl->tl_data_contents == NULL && size != 0) {
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free(tl);
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return _kadm5_error_code(ENOMEM);
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}
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memcpy(tl->tl_data_contents, data, size);
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tl->tl_data_next = ent->tl_data;
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ent->tl_data = tl;
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ent->n_tl_data++;
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return 0;
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}
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static
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krb5_error_code
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copy_keyset_to_kadm5(kadm5_server_context *context, krb5_kvno kvno,
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size_t n_keys, Key *keys, krb5_salt *salt,
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kadm5_principal_ent_t out)
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{
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size_t i;
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Key *key;
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krb5_key_data *kd;
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krb5_data *sp;
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krb5_error_code ret = 0;
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for (i = 0; i < n_keys; i++) {
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key = &keys[i];
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kd = &out->key_data[out->n_key_data];
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kd->key_data_ver = 2;
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kd->key_data_kvno = kvno;
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kd->key_data_type[0] = key->key.keytype;
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if(key->salt)
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kd->key_data_type[1] = key->salt->type;
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else
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kd->key_data_type[1] = KRB5_PADATA_PW_SALT;
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/* setup key */
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kd->key_data_length[0] = key->key.keyvalue.length;
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kd->key_data_contents[0] = malloc(kd->key_data_length[0]);
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if(kd->key_data_contents[0] == NULL && kd->key_data_length[0] != 0){
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ret = krb5_enomem(context->context);
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break;
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}
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memcpy(kd->key_data_contents[0], key->key.keyvalue.data,
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kd->key_data_length[0]);
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/* setup salt */
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if(key->salt)
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sp = &key->salt->salt;
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else
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sp = &salt->saltvalue;
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kd->key_data_length[1] = sp->length;
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kd->key_data_contents[1] = malloc(kd->key_data_length[1]);
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if(kd->key_data_length[1] != 0
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&& kd->key_data_contents[1] == NULL) {
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memset(kd->key_data_contents[0], 0, kd->key_data_length[0]);
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ret = krb5_enomem(context->context);
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break;
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}
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memcpy(kd->key_data_contents[1], sp->data, kd->key_data_length[1]);
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out->n_key_data++;
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}
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return ret;
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}
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kadm5_ret_t
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kadm5_s_get_principal(void *server_handle,
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krb5_principal princ,
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kadm5_principal_ent_t out,
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uint32_t mask)
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{
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kadm5_server_context *context = server_handle;
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kadm5_ret_t ret;
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hdb_entry ent;
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unsigned int flags = HDB_F_GET_ANY | HDB_F_ADMIN_DATA;
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if ((mask & KADM5_KEY_DATA) || (mask & KADM5_KVNO))
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flags |= HDB_F_ALL_KVNOS | HDB_F_DECRYPT;
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memset(&ent, 0, sizeof(ent));
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memset(out, 0, sizeof(*out));
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if (!context->keep_open) {
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ret = context->db->hdb_open(context->context, context->db, O_RDONLY, 0);
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if (ret)
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return ret;
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}
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/*
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* We may want to attempt to recover the log on read operations, but we
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* because the HDB/log lock order is reversed on slaves, in order to avoid
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* lock contention from kadm5srv apps we need to make sure that the the HDB
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* open for read-write is optimistic and attempts only a non-blocking lock,
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* and if it doesn't get it then it should fallback to read-only. But we
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* don't have that option in the hdb_open() interface at this time.
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*
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* For now we won't attempt to recover the log.
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*/
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ret = hdb_fetch_kvno(context->context, context->db, princ, flags,
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0 /*timestamp*/, 0/*etype*/, 0/*kvno*/, &ent);
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if (!context->keep_open)
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context->db->hdb_close(context->context, context->db);
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if(ret)
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return _kadm5_error_code(ret);
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if(mask & KADM5_PRINCIPAL)
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ret = krb5_copy_principal(context->context, ent.principal,
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&out->principal);
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if(ret)
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goto out;
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if(mask & KADM5_PRINC_EXPIRE_TIME && ent.valid_end)
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out->princ_expire_time = *ent.valid_end;
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if(mask & KADM5_PW_EXPIRATION && ent.pw_end)
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out->pw_expiration = *ent.pw_end;
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if(mask & KADM5_LAST_PWD_CHANGE)
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hdb_entry_get_pw_change_time(&ent, &out->last_pwd_change);
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if(mask & KADM5_ATTRIBUTES){
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out->attributes |= ent.flags.postdate ? 0 : KRB5_KDB_DISALLOW_POSTDATED;
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out->attributes |= ent.flags.forwardable ? 0 : KRB5_KDB_DISALLOW_FORWARDABLE;
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out->attributes |= ent.flags.initial ? KRB5_KDB_DISALLOW_TGT_BASED : 0;
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out->attributes |= ent.flags.renewable ? 0 : KRB5_KDB_DISALLOW_RENEWABLE;
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out->attributes |= ent.flags.proxiable ? 0 : KRB5_KDB_DISALLOW_PROXIABLE;
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out->attributes |= ent.flags.invalid ? KRB5_KDB_DISALLOW_ALL_TIX : 0;
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out->attributes |= ent.flags.require_preauth ? KRB5_KDB_REQUIRES_PRE_AUTH : 0;
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out->attributes |= ent.flags.require_pwchange ? KRB5_KDB_REQUIRES_PWCHANGE : 0;
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out->attributes |= ent.flags.client ? 0 : KRB5_KDB_DISALLOW_CLIENT;
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out->attributes |= ent.flags.server ? 0 : KRB5_KDB_DISALLOW_SVR;
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out->attributes |= ent.flags.change_pw ? KRB5_KDB_PWCHANGE_SERVICE : 0;
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out->attributes |= ent.flags.ok_as_delegate ? KRB5_KDB_OK_AS_DELEGATE : 0;
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out->attributes |= ent.flags.trusted_for_delegation ? KRB5_KDB_TRUSTED_FOR_DELEGATION : 0;
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out->attributes |= ent.flags.allow_kerberos4 ? KRB5_KDB_ALLOW_KERBEROS4 : 0;
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out->attributes |= ent.flags.allow_digest ? KRB5_KDB_ALLOW_DIGEST : 0;
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out->attributes |= ent.flags.virtual_keys ? KRB5_KDB_VIRTUAL_KEYS : 0;
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out->attributes |= ent.flags.virtual ? KRB5_KDB_VIRTUAL : 0;
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out->attributes |= ent.flags.no_auth_data_reqd ? KRB5_KDB_NO_AUTH_DATA_REQUIRED : 0;
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}
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if(mask & KADM5_MAX_LIFE) {
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if(ent.max_life)
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out->max_life = *ent.max_life;
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else
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out->max_life = INT_MAX;
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}
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if(mask & KADM5_MOD_TIME) {
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if(ent.modified_by)
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out->mod_date = ent.modified_by->time;
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else
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out->mod_date = ent.created_by.time;
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}
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if(mask & KADM5_MOD_NAME) {
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if(ent.modified_by) {
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if (ent.modified_by->principal != NULL)
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ret = krb5_copy_principal(context->context,
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ent.modified_by->principal,
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&out->mod_name);
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} else if(ent.created_by.principal != NULL)
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ret = krb5_copy_principal(context->context,
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ent.created_by.principal,
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&out->mod_name);
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else
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out->mod_name = NULL;
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}
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if(ret)
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goto out;
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if(mask & KADM5_KVNO)
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out->kvno = ent.kvno;
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if(mask & KADM5_MKVNO) {
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size_t n;
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out->mkvno = 0; /* XXX */
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for(n = 0; n < ent.keys.len; n++)
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if(ent.keys.val[n].mkvno) {
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out->mkvno = *ent.keys.val[n].mkvno; /* XXX this isn't right */
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break;
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}
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}
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#if 0 /* XXX implement */
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if(mask & KADM5_AUX_ATTRIBUTES)
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;
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if(mask & KADM5_LAST_SUCCESS)
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;
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if(mask & KADM5_LAST_FAILED)
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;
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if(mask & KADM5_FAIL_AUTH_COUNT)
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;
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#endif
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if(mask & KADM5_POLICY) {
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HDB_extension *ext;
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ext = hdb_find_extension(&ent, choice_HDB_extension_data_policy);
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if (ext == NULL) {
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out->policy = strdup("default");
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/* It's OK if we retun NULL instead of "default" */
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} else {
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out->policy = strdup(ext->data.u.policy);
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if (out->policy == NULL) {
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ret = krb5_enomem(context->context);
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goto out;
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}
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}
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}
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if(mask & KADM5_MAX_RLIFE) {
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if(ent.max_renew)
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out->max_renewable_life = *ent.max_renew;
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else
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out->max_renewable_life = INT_MAX;
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}
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if(mask & KADM5_KEY_DATA){
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size_t i;
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size_t n_keys = ent.keys.len;
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krb5_salt salt;
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HDB_extension *ext;
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HDB_Ext_KeySet *hist_keys = NULL;
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/* Don't return stale keys to kadm5 clients */
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ret = hdb_prune_keys(context->context, &ent);
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if (ret)
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goto out;
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ext = hdb_find_extension(&ent, choice_HDB_extension_data_hist_keys);
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if (ext != NULL)
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hist_keys = &ext->data.u.hist_keys;
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krb5_get_pw_salt(context->context, ent.principal, &salt);
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for (i = 0; hist_keys != NULL && i < hist_keys->len; i++)
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n_keys += hist_keys->val[i].keys.len;
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out->key_data = malloc(n_keys * sizeof(*out->key_data));
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if (out->key_data == NULL && n_keys != 0) {
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ret = krb5_enomem(context->context);
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goto out;
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}
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out->n_key_data = 0;
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ret = copy_keyset_to_kadm5(context, ent.kvno, ent.keys.len,
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ent.keys.val, &salt, out);
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if (ret)
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goto out;
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for (i = 0; hist_keys != NULL && i < hist_keys->len; i++) {
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ret = copy_keyset_to_kadm5(context, hist_keys->val[i].kvno,
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hist_keys->val[i].keys.len,
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hist_keys->val[i].keys.val,
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&salt, out);
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if (ret)
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goto out;
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}
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krb5_free_salt(context->context, salt);
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assert( out->n_key_data == n_keys );
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}
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if (ret)
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goto out;
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if(mask & KADM5_TL_DATA) {
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time_t last_pw_expire;
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const HDB_Ext_PKINIT_acl *acl;
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const HDB_Ext_Aliases *aliases;
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const HDB_Ext_KeyRotation *kr;
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heim_octet_string krb5_config;
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if (ent.etypes) {
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krb5_data buf;
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size_t len;
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ASN1_MALLOC_ENCODE(HDB_EncTypeList, buf.data, buf.length,
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ent.etypes, &len, ret);
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if (ret == 0) {
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ret = add_tl_data(out, KRB5_TL_ETYPES, buf.data, buf.length);
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free(buf.data);
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}
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if (ret)
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goto out;
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}
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ret = hdb_entry_get_pw_change_time(&ent, &last_pw_expire);
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if (ret == 0 && last_pw_expire) {
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unsigned char buf[4];
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_krb5_put_int(buf, last_pw_expire, sizeof(buf));
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ret = add_tl_data(out, KRB5_TL_LAST_PWD_CHANGE, buf, sizeof(buf));
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}
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ret = hdb_entry_get_krb5_config(&ent, &krb5_config);
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if (ret == 0 && krb5_config.length) {
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ret = add_tl_data(out, KRB5_TL_KRB5_CONFIG, krb5_config.data,
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krb5_config.length);
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if (ret)
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goto out;
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}
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/*
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* If the client was allowed to get key data, let it have the
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* password too.
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*/
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if (mask & KADM5_KEY_DATA) {
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heim_utf8_string pw;
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/* XXX But not if the client doesn't have ext-keys */
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ret = hdb_entry_get_password(context->context,
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context->db, &ent, &pw);
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if (ret == 0) {
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ret = add_tl_data(out, KRB5_TL_PASSWORD, pw, strlen(pw) + 1);
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free(pw);
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if (ret)
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goto out;
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}
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krb5_clear_error_message(context->context);
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}
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ret = hdb_entry_get_pkinit_acl(&ent, &acl);
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if (ret == 0 && acl) {
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krb5_data buf;
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size_t len;
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ASN1_MALLOC_ENCODE(HDB_Ext_PKINIT_acl, buf.data, buf.length,
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acl, &len, ret);
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if (ret)
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goto out;
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if (len != buf.length)
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krb5_abortx(context->context,
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"internal ASN.1 encoder error");
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ret = add_tl_data(out, KRB5_TL_PKINIT_ACL, buf.data, buf.length);
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free(buf.data);
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if (ret)
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goto out;
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}
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ret = hdb_entry_get_aliases(&ent, &aliases);
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if (ret == 0 && aliases) {
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krb5_data buf;
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size_t len;
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ASN1_MALLOC_ENCODE(HDB_Ext_Aliases, buf.data, buf.length,
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aliases, &len, ret);
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if (ret)
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goto out;
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if (len != buf.length)
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krb5_abortx(context->context,
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"internal ASN.1 encoder error");
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ret = add_tl_data(out, KRB5_TL_ALIASES, buf.data, buf.length);
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free(buf.data);
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if (ret)
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goto out;
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}
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ret = hdb_entry_get_key_rotation(context->context, &ent, &kr);
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if (ret == 0 && kr) {
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krb5_data buf;
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size_t len;
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ASN1_MALLOC_ENCODE(HDB_Ext_KeyRotation, buf.data, buf.length,
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kr, &len, ret);
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if (ret == 0)
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ret = add_tl_data(out, KRB5_TL_KEY_ROTATION, buf.data, buf.length);
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free(buf.data);
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}
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}
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out:
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if (ret)
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kadm5_free_principal_ent(context, out);
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hdb_free_entry(context->context, context->db, &ent);
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return _kadm5_error_code(ret);
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}
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