lib/krb5/appdefault.c

   1 /*
   2  * Copyright (c) 2000 - 2001 Kungliga Tekniska Högskolan
   3  * (Royal Institute of Technology, Stockholm, Sweden).
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  *
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * 3. Neither the name of the Institute nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 #include "krb5_locl.h"
  35
  36 void KRB5_LIB_FUNCTION
  37 krb5_appdefault_boolean(krb5_context context, const char *appname,
  38                         krb5_const_realm realm, const char *option,
  39                         krb5_boolean def_val, krb5_boolean *ret_val)
  40 {
  41
  42     if(appname == NULL)
  43         appname = getprogname();
  44
  45     def_val = krb5_config_get_bool_default(context, NULL, def_val,
  46                                            "libdefaults", option, NULL);
  47     if(realm != NULL)
  48         def_val = krb5_config_get_bool_default(context, NULL, def_val,
  49                                                "realms", realm, option, NULL);
  50
  51     def_val = krb5_config_get_bool_default(context, NULL, def_val,
  52                                            "appdefaults",
  53                                            option,
  54                                            NULL);
  55     if(realm != NULL)
  56         def_val = krb5_config_get_bool_default(context, NULL, def_val,
  57                                                "appdefaults",
  58                                                realm,
  59                                                option,
  60                                                NULL);
  61     if(appname != NULL) {
  62         def_val = krb5_config_get_bool_default(context, NULL, def_val,
  63                                                "appdefaults",
  64                                                appname,
  65                                                option,
  66                                                NULL);
  67         if(realm != NULL)
  68             def_val = krb5_config_get_bool_default(context, NULL, def_val,
  69                                                    "appdefaults",
  70                                                    appname,
  71                                                    realm,
  72                                                    option,
  73                                                    NULL);
  74     }
  75     *ret_val = def_val;
  76 }
  77
  78 void KRB5_LIB_FUNCTION
  79 krb5_appdefault_string(krb5_context context, const char *appname,
  80                        krb5_const_realm realm, const char *option,
  81                        const char *def_val, char **ret_val)
  82 {
  83     if(appname == NULL)
  84         appname = getprogname();
  85
  86     def_val = krb5_config_get_string_default(context, NULL, def_val,
  87                                              "libdefaults", option, NULL);
  88     if(realm != NULL)
  89         def_val = krb5_config_get_string_default(context, NULL, def_val,
  90                                                  "realms", realm, option, NULL);
  91
  92     def_val = krb5_config_get_string_default(context, NULL, def_val,
  93                                              "appdefaults",
  94                                              option,
  95                                              NULL);
  96     if(realm != NULL)
  97         def_val = krb5_config_get_string_default(context, NULL, def_val,
  98                                                  "appdefaults",
  99                                                  realm,
 100                                                  option,
 101                                                  NULL);
 102     if(appname != NULL) {
 103         def_val = krb5_config_get_string_default(context, NULL, def_val,
 104                                                  "appdefaults",
 105                                                  appname,
 106                                                  option,
 107                                                  NULL);
 108         if(realm != NULL)
 109             def_val = krb5_config_get_string_default(context, NULL, def_val,
 110                                                      "appdefaults",
 111                                                      appname,
 112                                                      realm,
 113                                                      option,
 114                                                      NULL);
 115     }
 116     if(def_val != NULL)
 117         *ret_val = strdup(def_val);
 118     else
 119         *ret_val = NULL;
 120 }
 121
 122 void KRB5_LIB_FUNCTION
 123 krb5_appdefault_time(krb5_context context, const char *appname,
 124                      krb5_const_realm realm, const char *option,
 125                      time_t def_val, time_t *ret_val)
 126 {
 127     krb5_deltat t;
 128     char *val;
 129
 130     krb5_appdefault_string(context, appname, realm, option, NULL, &val);
 131     if (val == NULL) {
 132         *ret_val = def_val;
 133         return;
 134     }
 135     if (krb5_string_to_deltat(val, &t))
 136         *ret_val = def_val;
 137     else
 138         *ret_val = t;
 139     free(val);
 140 }