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/*
* lib/krb5/os/def_realm.c
*
* Copyright 1990,1991 by the Massachusetts Institute of Technology.
* All Rights Reserved.
*
* Export of this software from the United States of America may
* require a specific license from the United States Government.
* It is the responsibility of any person or organization contemplating
* export to obtain such a license before exporting.
*
* WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
* distribute this software and its documentation for any purpose and
* without fee is hereby granted, provided that the above copyright
* notice appear in all copies and that both that copyright notice and
* this permission notice appear in supporting documentation, and that
* the name of M.I.T. not be used in advertising or publicity pertaining
* to distribution of the software without specific, written prior
* permission. M.I.T. makes no representations about the suitability of
* this software for any purpose. It is provided "as is" without express
* or implied warranty.
*
*
* krb5_get_default_realm() function.
*/
#include "k5-int.h"
#include <stdio.h>
/*
* Retrieves the default realm to be used if no user-specified realm is
* available. [e.g. to interpret a user-typed principal name with the
* realm omitted for convenience]
*
* returns system errors, NOT_ENOUGH_SPACE, KV5M_CONTEXT
*/
/*
* Implementation: the default realm is stored in a configuration file,
* named by krb5_config_file; the first token in this file is taken as
* the default local realm name.
*/
extern char *krb5_config_file; /* extern so can be set at
load/runtime */
krb5_error_code INTERFACE
krb5_get_default_realm(context, lrealm)
krb5_context context;
char **lrealm;
{
#ifdef OLD_CONFIG_FILE
FILE *config_file;
char realmbuf[BUFSIZ];
#endif
char *realm;
char *cp;
if (!context || (context->magic != KV5M_CONTEXT))
return KV5M_CONTEXT;
if (!context->default_realm) {
#ifdef OLD_CONFIG_FILE
krb5_find_config_files();
if (!(config_file = fopen(krb5_config_file, "r")))
/* can't open */
return KRB5_CONFIG_CANTOPEN;
if (fgets(realmbuf, sizeof(realmbuf), config_file) == NULL) {
fclose(config_file);
return(KRB5_CONFIG_BADFORMAT);
}
fclose(config_file);
realmbuf[BUFSIZ-1] = '0';
cp = strchr(realmbuf, '\n');
if (cp)
*cp = '\0';
cp = strchr(realmbuf, ' ');
if (cp)
*cp = '\0';
context->default_realm = malloc(strlen (realmbuf) + 1);
if (!context->default_realm)
return ENOMEM;
strcpy(context->default_realm, realmbuf);
#else
/*
* XXX should try to figure out a reasonable default based
* on the host's DNS domain.
*/
context->default_realm = 0;
profile_get_string(context->profile, "libdefaults",
"default_realm", 0, 0,
&context->default_realm);
if (context->default_realm == 0)
return(KRB5_CONFIG_BADFORMAT);
#endif
}
realm = context->default_realm;
if (!(*lrealm = cp = malloc((unsigned int) strlen(realm) + 1)))
return ENOMEM;
strcpy(cp, realm);
return(0);
}
krb5_error_code INTERFACE
krb5_set_default_realm(context, lrealm)
krb5_context context;
const char *lrealm;
{
if (!context || (context->magic != KV5M_CONTEXT))
return KV5M_CONTEXT;
if (context->default_realm) {
free(context->default_realm);
context->default_realm = 0;
}
/* Allow the user to clear the default realm setting by passing in
NULL */
if (!lrealm) return 0;
context->default_realm = malloc(strlen (lrealm) + 1);
if (!context->default_realm)
return ENOMEM;
strcpy(context->default_realm, lrealm);
return(0);
}
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