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/*
* Copyright (c) 1997-2001, 2003-2006 Kungliga Tekniska Högskolan
* (Royal Institute of Technology, Stockholm, Sweden).
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "kadm5_locl.h"
RCSID("$Id$");
struct randkey_principal_hook_ctx {
kadm5_server_context *context;
enum kadm5_hook_stage stage;
krb5_error_code code;
krb5_const_principal princ;
};
static krb5_error_code KRB5_LIB_CALL
randkey_principal_hook_cb(krb5_context context,
const void *hook,
void *hookctx,
void *userctx)
{
krb5_error_code ret;
const struct kadm5_hook_ftable *ftable = hook;
struct randkey_principal_hook_ctx *ctx = userctx;
ret = ftable->randkey(context, hookctx,
ctx->stage, ctx->code, ctx->princ);
if (ret != 0 && ret != KRB5_PLUGIN_NO_HANDLE)
_kadm5_s_set_hook_error_message(ctx->context, ret, "randkey",
hook, ctx->stage);
/* only pre-commit plugins can abort */
if (ret == 0 || ctx->stage == KADM5_HOOK_STAGE_POSTCOMMIT)
ret = KRB5_PLUGIN_NO_HANDLE;
return ret;
}
static kadm5_ret_t
randkey_principal_hook(kadm5_server_context *context,
enum kadm5_hook_stage stage,
krb5_error_code code,
krb5_const_principal princ)
{
krb5_error_code ret;
struct randkey_principal_hook_ctx ctx;
ctx.context = context;
ctx.stage = stage;
ctx.code = code;
ctx.princ = princ;
ret = _krb5_plugin_run_f(context->context, &kadm5_hook_plugin_data,
0, &ctx, randkey_principal_hook_cb);
if (ret == KRB5_PLUGIN_NO_HANDLE)
ret = 0;
return ret;
}
/*
* Set the keys of `princ' to random values, returning the random keys
* in `new_keys', `n_keys'.
*/
kadm5_ret_t
kadm5_s_randkey_principal(void *server_handle,
krb5_principal princ,
krb5_boolean keepold,
int n_ks_tuple,
krb5_key_salt_tuple *ks_tuple,
krb5_keyblock **new_keys,
int *n_keys)
{
kadm5_server_context *context = server_handle;
hdb_entry_ex ent;
kadm5_ret_t ret;
size_t i;
memset(&ent, 0, sizeof(ent));
if (!context->keep_open) {
ret = context->db->hdb_open(context->context, context->db, O_RDWR, 0);
if(ret)
return ret;
}
ret = kadm5_log_init(context);
if (ret)
goto out;
/* NOTE: We do not use hdb_fetch_kvno() here (maybe we should) */
ret = context->db->hdb_fetch_kvno(context->context, context->db, princ,
HDB_F_DECRYPT|HDB_F_GET_ANY|HDB_F_ADMIN_DATA,
0, &ent);
if(ret)
goto out2;
ret = randkey_principal_hook(context, KADM5_HOOK_STAGE_PRECOMMIT, 0, princ);
if (ret)
goto out3;
if (keepold) {
ret = hdb_add_current_keys_to_history(context->context, &ent.entry);
if (ret == 0 && keepold == 1)
ret = hdb_prune_keys_kvno(context->context, &ent.entry, 0);
if (ret)
goto out3;
} else {
/* Remove all key history */
ret = hdb_clear_extension(context->context, &ent.entry,
choice_HDB_extension_data_hist_keys);
if (ret)
goto out3;
}
ret = _kadm5_set_keys_randomly(context, &ent.entry, n_ks_tuple, ks_tuple,
new_keys, n_keys);
if (ret)
goto out3;
ent.entry.kvno++;
ent.entry.flags.require_pwchange = 0;
ret = _kadm5_set_modifier(context, &ent.entry);
if(ret)
goto out4;
ret = _kadm5_bump_pw_expire(context, &ent.entry);
if (ret)
goto out4;
if (keepold) {
ret = hdb_seal_keys(context->context, context->db, &ent.entry);
if (ret)
goto out4;
} else {
HDB_extension ext;
memset(&ext, 0, sizeof (ext));
ext.mandatory = FALSE;
ext.data.element = choice_HDB_extension_data_hist_keys;
ext.data.u.hist_keys.len = 0;
ext.data.u.hist_keys.val = NULL;
hdb_replace_extension(context->context, &ent.entry, &ext);
}
/* This logs the change for iprop and writes to the HDB */
ret = kadm5_log_modify(context, &ent.entry,
KADM5_ATTRIBUTES | KADM5_PRINCIPAL |
KADM5_MOD_NAME | KADM5_MOD_TIME |
KADM5_KEY_DATA | KADM5_KVNO |
KADM5_PW_EXPIRATION | KADM5_TL_DATA);
(void) randkey_principal_hook(context, KADM5_HOOK_STAGE_POSTCOMMIT, ret, princ);
out4:
if (ret) {
for (i = 0; i < *n_keys; ++i)
krb5_free_keyblock_contents(context->context, &(*new_keys)[i]);
free (*new_keys);
*new_keys = NULL;
*n_keys = 0;
}
out3:
hdb_free_entry(context->context, &ent);
out2:
(void) kadm5_log_end(context);
out:
if (!context->keep_open) {
kadm5_ret_t ret2;
ret2 = context->db->hdb_close(context->context, context->db);
if (ret == 0 && ret2 != 0)
ret = ret2;
}
return _kadm5_error_code(ret);
}
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