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).
221 lines
7.0 KiB
C
221 lines
7.0 KiB
C
/*
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* Copyright (c) 1997-2001, 2003, 2005-2006 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 "kadm5_locl.h"
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struct setkey_principal_hook_ctx {
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kadm5_server_context *context;
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enum kadm5_hook_stage stage;
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krb5_error_code code;
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krb5_const_principal princ;
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uint32_t flags;
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size_t n_ks_tuple;
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krb5_key_salt_tuple *ks_tuple;
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size_t n_keys;
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krb5_keyblock *keys;
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};
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static krb5_error_code KRB5_LIB_CALL
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setkey_principal_hook_cb(krb5_context context,
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const void *hook,
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void *hookctx,
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void *userctx)
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{
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krb5_error_code ret;
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const struct kadm5_hook_ftable *ftable = hook;
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struct setkey_principal_hook_ctx *ctx = userctx;
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ret = ftable->set_keys(context, hookctx,
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ctx->stage, ctx->code,
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ctx->princ, ctx->flags,
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ctx->n_ks_tuple, ctx->ks_tuple,
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ctx->n_keys, ctx->keys);
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if (ret != 0 && ret != KRB5_PLUGIN_NO_HANDLE)
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_kadm5_s_set_hook_error_message(ctx->context, ret, "setkey",
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hook, ctx->stage);
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/* only pre-commit plugins can abort */
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if (ret == 0 || ctx->stage == KADM5_HOOK_STAGE_POSTCOMMIT)
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ret = KRB5_PLUGIN_NO_HANDLE;
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return ret;
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}
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static kadm5_ret_t
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setkey_principal_hook(kadm5_server_context *context,
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enum kadm5_hook_stage stage,
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krb5_error_code code,
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krb5_const_principal princ,
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uint32_t flags,
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size_t n_ks_tuple,
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krb5_key_salt_tuple *ks_tuple,
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size_t n_keys,
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krb5_keyblock *keyblocks)
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{
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krb5_error_code ret;
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struct setkey_principal_hook_ctx ctx;
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ctx.context = context;
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ctx.stage = stage;
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ctx.code = code;
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ctx.princ = princ;
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ctx.flags = flags;
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ctx.n_ks_tuple = n_ks_tuple;
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ctx.ks_tuple = ks_tuple;
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ctx.n_keys = n_keys;
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ctx.keys = keyblocks;
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ret = _krb5_plugin_run_f(context->context, &kadm5_hook_plugin_data,
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0, &ctx, setkey_principal_hook_cb);
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if (ret == KRB5_PLUGIN_NO_HANDLE)
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ret = 0;
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return ret;
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}
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/**
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* Server-side function to set new keys for a principal.
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*/
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kadm5_ret_t
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kadm5_s_setkey_principal_3(void *server_handle,
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krb5_principal princ,
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krb5_boolean keepold,
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int n_ks_tuple,
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krb5_key_salt_tuple *ks_tuple,
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krb5_keyblock *keyblocks, int n_keys)
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{
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kadm5_server_context *context = server_handle;
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hdb_entry ent;
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kadm5_ret_t ret = 0;
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size_t i;
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memset(&ent, 0, sizeof(ent));
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if (!context->keep_open)
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ret = context->db->hdb_open(context->context, context->db, O_RDWR, 0);
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if (ret)
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return ret;
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ret = kadm5_log_init(context);
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if (ret) {
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if (!context->keep_open)
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context->db->hdb_close(context->context, context->db);
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return ret;
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}
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/* NOTE: We do not use hdb_fetch_kvno() here (maybe we should?) */
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ret = context->db->hdb_fetch_kvno(context->context, context->db, princ,
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HDB_F_DECRYPT|HDB_F_GET_ANY|HDB_F_ADMIN_DATA,
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0, &ent);
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if (ret) {
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(void) kadm5_log_end(context);
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if (!context->keep_open)
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context->db->hdb_close(context->context, context->db);
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return ret;
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}
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ret = setkey_principal_hook(context, KADM5_HOOK_STAGE_PRECOMMIT, 0,
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princ, keepold ? KADM5_HOOK_FLAG_KEEPOLD : 0,
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n_ks_tuple, ks_tuple, n_keys, keyblocks);
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if (ret) {
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(void) kadm5_log_end(context);
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if (!context->keep_open)
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context->db->hdb_close(context->context, context->db);
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return ret;
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}
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if (keepold) {
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ret = hdb_add_current_keys_to_history(context->context, &ent);
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} else
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ret = hdb_clear_extension(context->context, &ent,
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choice_HDB_extension_data_hist_keys);
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/*
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* Though in practice all real calls to this function will pass an empty
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* ks_tuple, and cannot in any case employ any salts that require
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* additional data, we go the extra mile to set any requested salt type
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* along with a zero length salt value. While we're at it we check that
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* each ks_tuple's enctype matches the corresponding key enctype.
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*/
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if (ret == 0) {
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free_Keys(&ent.keys);
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for (i = 0; i < n_keys; ++i) {
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Key k;
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Salt s;
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k.mkvno = 0;
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k.key = keyblocks[i];
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if (n_ks_tuple == 0)
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k.salt = 0;
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else {
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if (ks_tuple[i].ks_enctype != keyblocks[i].keytype) {
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ret = KADM5_SETKEY3_ETYPE_MISMATCH;
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break;
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}
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s.type = ks_tuple[i].ks_salttype;
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s.salt.data = 0;
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s.opaque = 0;
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k.salt = &s;
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}
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if ((ret = add_Keys(&ent.keys, &k)) != 0)
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break;
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}
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}
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if (ret == 0) {
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ent.kvno++;
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ent.flags.require_pwchange = 0;
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hdb_entry_set_pw_change_time(context->context, &ent, 0);
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hdb_entry_clear_password(context->context, &ent);
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if ((ret = hdb_seal_keys(context->context, context->db,
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&ent)) == 0
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&& (ret = _kadm5_set_modifier(context, &ent)) == 0
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&& (ret = _kadm5_bump_pw_expire(context, &ent)) == 0)
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ret = kadm5_log_modify(context, &ent,
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KADM5_ATTRIBUTES | KADM5_PRINCIPAL |
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KADM5_MOD_NAME | KADM5_MOD_TIME |
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KADM5_KEY_DATA | KADM5_KVNO |
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KADM5_PW_EXPIRATION | KADM5_TL_DATA);
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}
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(void) setkey_principal_hook(context, KADM5_HOOK_STAGE_POSTCOMMIT, ret,
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princ, keepold, n_ks_tuple, ks_tuple,
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n_keys, keyblocks);
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hdb_free_entry(context->context, context->db, &ent);
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(void) kadm5_log_end(context);
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if (!context->keep_open)
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context->db->hdb_close(context->context, context->db);
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return _kadm5_error_code(ret);
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}
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