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