/*
 * Copyright (c) 2000 - 2001 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 "krb5_locl.h"

KRB5_LIB_FUNCTION void KRB5_LIB_CALL
krb5_appdefault_boolean(krb5_context context, const char *appname,
                        krb5_const_realm realm, const char *option,
                        krb5_boolean def_val, krb5_boolean *ret_val)
{

    if(appname == NULL)
        appname = getprogname();

    def_val = krb5_config_get_bool_default(context, NULL, def_val,
                                           "libdefaults", option, NULL);
    if(realm != NULL)
        def_val = krb5_config_get_bool_default(context, NULL, def_val,
                                               "realms", realm, option, NULL);

    def_val = krb5_config_get_bool_default(context, NULL, def_val,
                                           "appdefaults",
                                           option,
                                           NULL);
    if(realm != NULL)
        def_val = krb5_config_get_bool_default(context, NULL, def_val,
                                               "appdefaults",
                                               realm,
                                               option,
                                               NULL);
    if(appname != NULL) {
        def_val = krb5_config_get_bool_default(context, NULL, def_val,
                                               "appdefaults",
                                               appname,
                                               option,
                                               NULL);
        if(realm != NULL)
            def_val = krb5_config_get_bool_default(context, NULL, def_val,
                                                   "appdefaults",
                                                   appname,
                                                   realm,
                                                   option,
                                                   NULL);
    }
    *ret_val = def_val;
}

KRB5_LIB_FUNCTION void KRB5_LIB_CALL
krb5_appdefault_string(krb5_context context, const char *appname,
                       krb5_const_realm realm, const char *option,
                       const char *def_val, char **ret_val)
{
    if(appname == NULL)
        appname = getprogname();

    def_val = krb5_config_get_string_default(context, NULL, def_val,
                                             "libdefaults", option, NULL);
    if(realm != NULL)
        def_val = krb5_config_get_string_default(context, NULL, def_val,
                                                 "realms", realm, option, NULL);

    def_val = krb5_config_get_string_default(context, NULL, def_val,
                                             "appdefaults",
                                             option,
                                             NULL);
    if(realm != NULL)
        def_val = krb5_config_get_string_default(context, NULL, def_val,
                                                 "appdefaults",
                                                 realm,
                                                 option,
                                                 NULL);
    if(appname != NULL) {
        def_val = krb5_config_get_string_default(context, NULL, def_val,
                                                 "appdefaults",
                                                 appname,
                                                 option,
                                                 NULL);
        if(realm != NULL)
            def_val = krb5_config_get_string_default(context, NULL, def_val,
                                                     "appdefaults",
                                                     appname,
                                                     realm,
                                                     option,
                                                     NULL);
    }
    if(def_val != NULL)
        *ret_val = strdup(def_val);
    else
        *ret_val = NULL;
}

KRB5_LIB_FUNCTION void KRB5_LIB_CALL
krb5_appdefault_time(krb5_context context, const char *appname,
                     krb5_const_realm realm, const char *option,
                     time_t def_val, time_t *ret_val)
{
    krb5_deltat t;
    char *val;

    krb5_appdefault_string(context, appname, realm, option, NULL, &val);
    if (val == NULL) {
        *ret_val = def_val;
        return;
    }
    if (krb5_string_to_deltat(val, &t))
        *ret_val = def_val;
    else
        *ret_val = t;
    free(val);
}