/* $NetBSD: context_s.c,v 1.2 2017/01/28 21:31:49 christos Exp $ */
/*
* Copyright (c) 1997 - 2002 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("$NetBSD: context_s.c,v 1.2 2017/01/28 21:31:49 christos Exp $");
static kadm5_ret_t
kadm5_s_lock(void *server_handle)
{
kadm5_server_context *context = server_handle;
kadm5_ret_t ret;
if (context->keep_open) {
/*
* We open/close around every operation, but we retain the DB
* open if the DB was locked with a prior call to kadm5_lock(),
* so if it's open here that must be because the DB is locked.
*/
heim_assert(context->db->lock_count > 0,
"Internal error in tracking HDB locks");
return KADM5_ALREADY_LOCKED;
}
ret = context->db->hdb_open(context->context, context->db, O_RDWR, 0);
if (ret)
return ret;
ret = context->db->hdb_lock(context->context, context->db, HDB_WLOCK);
if (ret) {
(void) context->db->hdb_close(context->context, context->db);
return ret;
}
/*
* Attempt to recover the log. This will generally fail on slaves,
* and we can't tell if we're on a slave here.
*
* Perhaps we could set a flag in the kadm5_server_context to
* indicate whether a read has been done without recovering the log,
* in which case we could fail any subsequent writes.
*/
if (kadm5_log_init(context) == 0)
(void) kadm5_log_end(context);
context->keep_open = 1;
return 0;
}
static kadm5_ret_t
kadm5_s_unlock(void *server_handle)
{
kadm5_server_context *context = server_handle;
kadm5_ret_t ret;
if (!context->keep_open)
return KADM5_NOT_LOCKED;
context->keep_open = 0;
ret = context->db->hdb_unlock(context->context, context->db);
(void) context->db->hdb_close(context->context, context->db);
return ret;
}
static void
set_funcs(kadm5_server_context *c)
{
#define SET(C, F) (C)->funcs.F = kadm5_s_ ## F
SET(c, chpass_principal);
SET(c, chpass_principal_with_key);
SET(c, create_principal);
SET(c, delete_principal);
SET(c, destroy);
SET(c, flush);
SET(c, get_principal);
SET(c, get_principals);
SET(c, get_privs);
SET(c, modify_principal);
SET(c, randkey_principal);
SET(c, rename_principal);
SET(c, lock);
SET(c, unlock);
SET(c, setkey_principal_3);
}
#ifndef NO_UNIX_SOCKETS
static void
set_socket_name(krb5_context context, struct sockaddr_un *un)
{
const char *fn = kadm5_log_signal_socket(context);
memset(un, 0, sizeof(*un));
un->sun_family = AF_UNIX;
strlcpy (un->sun_path, fn, sizeof(un->sun_path));
}
#else
static void
set_socket_info(krb5_context context, struct addrinfo **info)
{
kadm5_log_signal_socket_info(context, 0, info);
}
#endif
static kadm5_ret_t
find_db_spec(kadm5_server_context *ctx)
{
krb5_context context = ctx->context;
struct hdb_dbinfo *info, *d;
krb5_error_code ret;
int aret;
if (ctx->config.realm) {
/* fetch the databases */
ret = hdb_get_dbinfo(context, &info);
if (ret)
return ret;
d = NULL;
while ((d = hdb_dbinfo_get_next(info, d)) != NULL) {
const char *p = hdb_dbinfo_get_realm(context, d);
/* match default (realm-less) */
if(p != NULL && strcmp(ctx->config.realm, p) != 0)
continue;
p = hdb_dbinfo_get_dbname(context, d);
if (p) {
ctx->config.dbname = strdup(p);
if (ctx->config.dbname == NULL)
return ENOMEM;
}
p = hdb_dbinfo_get_acl_file(context, d);
if (p) {
ctx->config.acl_file = strdup(p);
if (ctx->config.acl_file == NULL)
return ENOMEM;
}
p = hdb_dbinfo_get_mkey_file(context, d);
if (p) {
ctx->config.stash_file = strdup(p);
if (ctx->config.stash_file == NULL)
return ENOMEM;
}
p = hdb_dbinfo_get_log_file(context, d);
if (p) {
ctx->log_context.log_file = strdup(p);
if (ctx->log_context.log_file == NULL)
return ENOMEM;
}
break;
}
hdb_free_dbinfo(context, &info);
}
/* If any of the values was unset, pick up the default value */
if (ctx->config.dbname == NULL) {
ctx->config.dbname = strdup(hdb_default_db(context));
if (ctx->config.dbname == NULL)
return ENOMEM;
}
if (ctx->config.acl_file == NULL) {
aret = asprintf(&ctx->config.acl_file, "%s/kadmind.acl",
hdb_db_dir(context));
if (aret == -1)
return ENOMEM;
}
if (ctx->config.stash_file == NULL) {
aret = asprintf(&ctx->config.stash_file, "%s/m-key",
hdb_db_dir(context));
if (aret == -1)
return ENOMEM;
}
if (ctx->log_context.log_file == NULL) {
aret = asprintf(&ctx->log_context.log_file, "%s/log",
hdb_db_dir(context));
if (aret == -1)
return ENOMEM;
}
#ifndef NO_UNIX_SOCKETS
set_socket_name(context, &ctx->log_context.socket_name);
#else
set_socket_info(context, &ctx->log_context.socket_info);
#endif
return 0;
}
kadm5_ret_t
_kadm5_s_init_context(kadm5_server_context **ctx,
kadm5_config_params *params,
krb5_context context)
{
kadm5_ret_t ret = 0;
*ctx = calloc(1, sizeof(**ctx));
if (*ctx == NULL)
return ENOMEM;
(*ctx)->log_context.socket_fd = rk_INVALID_SOCKET;
set_funcs(*ctx);
(*ctx)->context = context;
krb5_add_et_list (context, initialize_kadm5_error_table_r);
#define is_set(M) (params && params->mask & KADM5_CONFIG_ ## M)
if (is_set(REALM)) {
(*ctx)->config.realm = strdup(params->realm);
if ((*ctx)->config.realm == NULL)
return ENOMEM;
} else {
ret = krb5_get_default_realm(context, &(*ctx)->config.realm);
if (ret)
return ret;
}
if (is_set(DBNAME)) {
(*ctx)->config.dbname = strdup(params->dbname);
if ((*ctx)->config.dbname == NULL)
return ENOMEM;
}
if (is_set(ACL_FILE)) {
(*ctx)->config.acl_file = strdup(params->acl_file);
if ((*ctx)->config.acl_file == NULL)
return ENOMEM;
}
if (is_set(STASH_FILE)) {
(*ctx)->config.stash_file = strdup(params->stash_file);
if ((*ctx)->config.stash_file == NULL)
return ENOMEM;
}
find_db_spec(*ctx);
/* PROFILE can't be specified for now */
/* KADMIND_PORT is supposed to be used on the server also,
but this doesn't make sense */
/* ADMIN_SERVER is client only */
/* ADNAME is not used at all (as far as I can tell) */
/* ADB_LOCKFILE ditto */
/* DICT_FILE */
/* ADMIN_KEYTAB */
/* MKEY_FROM_KEYBOARD is not supported */
/* MKEY_NAME neither */
/* ENCTYPE */
/* MAX_LIFE */
/* MAX_RLIFE */
/* EXPIRATION */
/* FLAGS */
/* ENCTYPES */
return 0;
}
HDB *
_kadm5_s_get_db(void *server_handle)
{
kadm5_server_context *context = server_handle;
return context->db;
}