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/*
* Copyright (c) 1997-2001, 2003, 2005-2006 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 modify_principal_hook_ctx {
kadm5_server_context *context;
enum kadm5_hook_stage stage;
krb5_error_code code;
kadm5_principal_ent_t princ;
uint32_t mask;
};
static krb5_error_code KRB5_LIB_CALL
modify_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 modify_principal_hook_ctx *ctx = userctx;
ret = ftable->modify(context, hookctx, ctx->stage,
ctx->code, ctx->princ, ctx->mask);
if (ret != 0 && ret != KRB5_PLUGIN_NO_HANDLE)
_kadm5_s_set_hook_error_message(ctx->context, ret, "modify",
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
modify_principal_hook(kadm5_server_context *context,
enum kadm5_hook_stage stage,
krb5_error_code code,
kadm5_principal_ent_t princ,
uint32_t mask)
{
krb5_error_code ret;
struct modify_principal_hook_ctx ctx;
ctx.context = context;
ctx.stage = stage;
ctx.code = code;
ctx.princ = princ;
ctx.mask = mask;
ret = _krb5_plugin_run_f(context->context, &kadm5_hook_plugin_data,
0, &ctx, modify_principal_hook_cb);
if (ret == KRB5_PLUGIN_NO_HANDLE)
ret = 0;
return ret;
}
static kadm5_ret_t
modify_principal(void *server_handle,
kadm5_principal_ent_t princ,
uint32_t mask,
uint32_t forbidden_mask)
{
kadm5_server_context *context = server_handle;
hdb_entry ent;
kadm5_ret_t ret;
memset(&ent, 0, sizeof(ent));
if((mask & forbidden_mask))
return KADM5_BAD_MASK;
if((mask & KADM5_POLICY) && strcmp(princ->policy, "default") != 0)
return KADM5_UNK_POLICY;
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, which means we'll
* automatically reject modifications of would-be virtual principals.
*/
ret = context->db->hdb_fetch_kvno(context->context, context->db,
princ->principal,
HDB_F_DECRYPT|HDB_F_GET_ANY|HDB_F_ADMIN_DATA,
0, &ent);
if (ret)
goto out2;
ret = modify_principal_hook(context, KADM5_HOOK_STAGE_PRECOMMIT,
0, princ, mask);
if (ret)
goto out3;
/*
* XXX Make sure that _kadm5_setup_entry() checks that the time of last
* change in `ent' matches the one in `princ'.
*/
ret = _kadm5_setup_entry(context, &ent, mask, princ, mask, NULL, 0);
if (ret)
goto out3;
ret = _kadm5_set_modifier(context, &ent);
if (ret)
goto out3;
/*
* If any keys are bogus, disallow the modify. If the keys were
* bogus as stored in the HDB we could allow those through, but
* distinguishing that case from a pre-1.6 client using add_enctype
* without the get-keys privilege requires more work (mainly: checking that
* the bogus keys in princ->key_data[] have corresponding bogus keys in ent
* before calling _kadm5_setup_entry()).
*/
if ((mask & KADM5_KEY_DATA) &&
kadm5_some_keys_are_bogus(princ->n_key_data, princ->key_data)) {
ret = KADM5_AUTH_GET_KEYS; /* Not quite appropriate, but it'll do */
goto out3;
}
ret = hdb_seal_keys(context->context, context->db, &ent);
if (ret)
goto out3;
if ((mask & KADM5_POLICY)) {
HDB_extension ext;
memset(&ext, 0, sizeof(ext));
/* XXX should be TRUE, but we don't yet support policies */
ext.mandatory = FALSE;
ext.data.element = choice_HDB_extension_data_policy;
ext.data.u.policy = strdup(princ->policy);
if (ext.data.u.policy == NULL) {
ret = krb5_enomem(context->context);
goto out3;
}
/* This calls free_HDB_extension(), freeing ext.data.u.policy */
ret = hdb_replace_extension(context->context, &ent, &ext);
free(ext.data.u.policy);
if (ret)
goto out3;
}
/* This logs the change for iprop and writes to the HDB */
ret = kadm5_log_modify(context, &ent,
mask | KADM5_MOD_NAME | KADM5_MOD_TIME);
(void) modify_principal_hook(context, KADM5_HOOK_STAGE_POSTCOMMIT,
ret, princ, mask);
out3:
hdb_free_entry(context->context, context->db, &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);
}
kadm5_ret_t
kadm5_s_modify_principal(void *server_handle,
kadm5_principal_ent_t princ,
uint32_t mask)
{
return modify_principal(server_handle, princ, mask,
KADM5_LAST_PWD_CHANGE | KADM5_MOD_TIME
| KADM5_MOD_NAME | KADM5_MKVNO
| KADM5_AUX_ATTRIBUTES | KADM5_LAST_SUCCESS
| KADM5_LAST_FAILED);
}
|
