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/*
* Kerberos compatibility functions for AIX's NAS libraries.
*
* AIX for some reason doesn't provide the krb5_appdefault_* functions, but
* does provide the underlying profile library functions (as a separate
* libk5profile with a separate k5profile.h header file).
*
* This file is therefore (apart from the includes, opening and closing
* comments, and the spots marked with an rra-c-util comment) a verbatim copy
* of src/lib/krb5/krb/appdefault.c from MIT Kerberos 1.4.4.
*
* The canonical version of this file is maintained in the rra-c-util package,
* which can be found at <https://www.eyrie.org/~eagle/software/rra-c-util/>.
*
* Copyright 1985-2005 by the Massachusetts Institute of Technology.
* For license information, see the end of this file.
*/
#include <config.h>
#include <krb5.h>
#ifdef HAVE_K5PROFILE_H
# include <k5profile.h>
#endif
#ifdef HAVE_PROFILE_H
# include <profile.h>
#endif
#include <stdio.h>
#include <string.h>
/*xxx Duplicating this is annoying; try to work on a better way.*/
static const char *const conf_yes[] = {
"y", "yes", "true", "t", "1", "on",
0,
};
static const char *const conf_no[] = {
"n", "no", "false", "nil", "0", "off",
0,
};
static int conf_boolean(char *s)
{
const char * const *p;
for(p=conf_yes; *p; p++) {
if (!strcasecmp(*p,s))
return 1;
}
for(p=conf_no; *p; p++) {
if (!strcasecmp(*p,s))
return 0;
}
/* Default to "no" */
return 0;
}
static krb5_error_code appdefault_get(krb5_context context, const char *appname, const krb5_data *realm, const char *option, char **ret_value)
{
profile_t profile;
const char *names[5];
char **nameval = NULL;
krb5_error_code retval;
const char * realmstr = realm?realm->data:NULL;
/*
* rra-c-util: The magic values are internal, so a magic check for the
* context struct was removed here. Call krb5_get_profile if it's
* available since the krb5_context struct may be opaque.
*/
if (!context)
return KV5M_CONTEXT;
#ifdef HAVE_KRB5_GET_PROFILE
krb5_get_profile(context, &profile);
#else
profile = context->profile;
#endif
/*
* Try number one:
*
* [appdefaults]
* app = {
* SOME.REALM = {
* option = <boolean>
* }
* }
*/
names[0] = "appdefaults";
names[1] = appname;
if (realmstr) {
names[2] = realmstr;
names[3] = option;
names[4] = 0;
retval = profile_get_values(profile, names, &nameval);
if (retval == 0 && nameval && nameval[0]) {
*ret_value = strdup(nameval[0]);
goto goodbye;
}
}
/*
* Try number two:
*
* [appdefaults]
* app = {
* option = <boolean>
* }
*/
names[2] = option;
names[3] = 0;
retval = profile_get_values(profile, names, &nameval);
if (retval == 0 && nameval && nameval[0]) {
*ret_value = strdup(nameval[0]);
goto goodbye;
}
/*
* Try number three:
*
* [appdefaults]
* realm = {
* option = <boolean>
*/
if (realmstr) {
names[1] = realmstr;
names[2] = option;
names[3] = 0;
retval = profile_get_values(profile, names, &nameval);
if (retval == 0 && nameval && nameval[0]) {
*ret_value = strdup(nameval[0]);
goto goodbye;
}
}
/*
* Try number four:
*
* [appdefaults]
* option = <boolean>
*/
names[1] = option;
names[2] = 0;
retval = profile_get_values(profile, names, &nameval);
if (retval == 0 && nameval && nameval[0]) {
*ret_value = strdup(nameval[0]);
} else {
return retval;
}
goodbye:
if (nameval) {
char **cpp;
for (cpp = nameval; *cpp; cpp++)
free(*cpp);
free(nameval);
}
return 0;
}
void KRB5_CALLCONV
krb5_appdefault_boolean(krb5_context context, const char *appname, const krb5_data *realm, const char *option, int default_value, int *ret_value)
{
char *string = NULL;
krb5_error_code retval;
retval = appdefault_get(context, appname, realm, option, &string);
if (! retval && string) {
*ret_value = conf_boolean(string);
free(string);
} else
*ret_value = default_value;
}
void KRB5_CALLCONV
krb5_appdefault_string(krb5_context context, const char *appname, const krb5_data *realm, const char *option, const char *default_value, char **ret_value)
{
krb5_error_code retval;
char *string;
retval = appdefault_get(context, appname, realm, option, &string);
if (! retval && string) {
*ret_value = string;
} else {
*ret_value = strdup(default_value);
}
}
/*
* Copyright (C) 1985-2005 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. Furthermore if you modify this software you must label
* your software as modified software and not distribute it in such a
* fashion that it might be confused with the original MIT software.
* 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.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*
* Individual source code files are copyright MIT, Cygnus Support,
* OpenVision, Oracle, Sun Soft, FundsXpress, and others.
*
* Project Athena, Athena, Athena MUSE, Discuss, Hesiod, Kerberos, Moira,
* and Zephyr are trademarks of the Massachusetts Institute of Technology
* (MIT). No commercial use of these trademarks may be made without
* prior written permission of MIT.
*
* "Commercial use" means use of a name in a product or other for-profit
* manner. It does NOT prevent a commercial firm from referring to the
* MIT trademarks in order to convey information (although in doing so,
* recognition of their trademark status should be given).
*
* There is no SPDX-License-Identifier registered for this license.
*/
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