5447b81fb1
This is a large commit that adds several features: - Revamps and moves virtual host-based service principal functionality from kdc/ to lib/hdb/ so that it may be automatically visible to lib/kadm5/, as well as kadmin(1)/kadmind(8) and ktutil(1). The changes are backwards-incompatible. - Completes support for documenting a service principal's supported enctypes in its HDB entry independently of its long-term keys. This will reduce HDB bloat by not requiring that service principals have more long-term keys than they need just to document the service's supported enctypes. - Adds support for storing krb5.conf content in principals' HDB entries. This may eventually be used for causing Heimdal KDC services to reconfigure primary/secondary roles automatically by discovering the configured primary in an HDB entry for the realm. For now this will be used to help reduce the amount of configuration needed by clients of an upcoming HTTP binding of the kadmin service.
150 lines
4.5 KiB
C
150 lines
4.5 KiB
C
/*
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* Copyright (c) 2018 Cesnet z.s.p.o.
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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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RCSID("$Id$");
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struct prune_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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int kvno;
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};
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static krb5_error_code KRB5_LIB_CALL
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prune_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 prune_principal_hook_ctx *ctx = userctx;
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ret = ftable->prune(context, hookctx,
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ctx->stage, ctx->code, ctx->princ, ctx->kvno);
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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, "prune",
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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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prune_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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int kvno)
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{
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krb5_error_code ret;
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struct prune_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.kvno = kvno;
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ret = _krb5_plugin_run_f(context->context, &kadm5_hook_plugin_data,
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0, &ctx, prune_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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kadm5_ret_t
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kadm5_s_prune_principal(void *server_handle,
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krb5_principal princ,
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int kvno)
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{
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kadm5_server_context *context = server_handle;
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hdb_entry_ex ent;
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kadm5_ret_t ret;
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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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}
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ret = kadm5_log_init(context);
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if (ret)
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goto out;
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/* NOTE: We do not use hdb_fetch_kvno() here */
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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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goto out2;
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ret = prune_principal_hook(context, KADM5_HOOK_STAGE_PRECOMMIT,
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0, princ, kvno);
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if (ret)
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goto out3;
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ret = hdb_prune_keys_kvno(context->context, &ent.entry, kvno);
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if (ret)
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goto out3;
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ret = hdb_seal_keys(context->context, context->db, &ent.entry);
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if (ret)
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goto out3;
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ret = kadm5_log_modify(context, &ent.entry, KADM5_KEY_DATA);
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(void) prune_principal_hook(context, KADM5_HOOK_STAGE_POSTCOMMIT,
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ret, princ, kvno);
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out3:
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hdb_free_entry(context->context, &ent);
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out2:
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(void) kadm5_log_end(context);
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out:
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if (!context->keep_open) {
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kadm5_ret_t ret2;
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ret2 = context->db->hdb_close(context->context, context->db);
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if (ret == 0 && ret2 != 0)
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ret = ret2;
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}
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return _kadm5_error_code(ret);
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}
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