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/* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
/* lib/krb5/krb/bld_pr_ext.c */
/*
* Copyright 1991, 2008, 2009 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 M.I.T. 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.
*/
/*
*
* Build a principal from a list of lengths and strings
*/
#include "k5-int.h"
#include <stdarg.h>
krb5_error_code KRB5_CALLCONV_C
krb5_build_principal_ext(krb5_context context, krb5_principal * princ,
unsigned int rlen, const char * realm, ...)
{
va_list ap;
int i, count = 0;
krb5_data *princ_data;
krb5_principal princ_ret;
krb5_data tmpdata;
va_start(ap, realm);
/* count up */
while (va_arg(ap, int) != 0) {
(void)va_arg(ap, char *); /* pass one up */
count++;
}
va_end(ap);
/* we do a 2-pass to avoid the need to guess on allocation needs
cf. bld_princ.c */
/* get space for array */
princ_data = (krb5_data *) malloc(sizeof(krb5_data) * count);
if (!princ_data)
return ENOMEM;
princ_ret = (krb5_principal) malloc(sizeof(krb5_principal_data));
if (!princ_ret) {
free(princ_data);
return ENOMEM;
}
princ_ret->data = princ_data;
princ_ret->length = count;
tmpdata.length = rlen;
tmpdata.data = (char *) realm;
if (krb5int_copy_data_contents_add0(context, &tmpdata, &princ_ret->realm) != 0) {
free(princ_data);
free(princ_ret);
return ENOMEM;
}
/* process rest of components */
va_start(ap, realm);
for (i = 0; i < count; i++) {
tmpdata.length = va_arg(ap, unsigned int);
tmpdata.data = va_arg(ap, char *);
if (krb5int_copy_data_contents_add0(context, &tmpdata,
&princ_data[i]) != 0)
goto free_out;
}
va_end(ap);
*princ = princ_ret;
krb5_princ_type(context, princ_ret) = KRB5_NT_UNKNOWN;
return 0;
free_out:
while (--i >= 0)
free(princ_data[i].data);
free(princ_data);
free(princ_ret->realm.data);
free(princ_ret);
va_end(ap);
return ENOMEM;
}
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