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  KRB5_LIB_FUNCTION void KRB5_LIB_CALL
 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  KRB5_LIB_FUNCTION void KRB5_LIB_CALL
 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  KRB5_LIB_FUNCTION void KRB5_LIB_CALL
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  }