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/*
* lib/krb5/krb/bld_princ.c
*
* Copyright 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. 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 strings
*/
/* Need <krb5/k5-config.h> for HAVE_STDARG_H */
#include "k5-int.h"
#ifdef HAVE_STDARG_H
#include <stdarg.h>
#else
#include <varargs.h>
#endif
krb5_error_code
krb5_build_principal_va(context, princ, rlen, realm, ap)
krb5_context context;
krb5_principal princ;
int rlen;
krb5_const char *realm;
va_list ap;
{
register int i, count = 0;
register char *next;
char *tmpdata;
krb5_data *data;
/* guess at an initial sufficent count of 2 pieces */
count = 2;
/* get space for array and realm, and insert realm */
data = (krb5_data *) malloc(sizeof(krb5_data) * count);
if (data == 0)
return ENOMEM;
krb5_princ_set_realm_length(context, princ, rlen);
tmpdata = malloc(rlen);
if (!tmpdata) {
free (data);
return ENOMEM;
}
krb5_princ_set_realm_data(context, princ, tmpdata);
memcpy(tmpdata, realm, rlen);
/* process rest of components */
for (i = 0, next = va_arg(ap, char *);
next;
next = va_arg(ap, char *), i++) {
if (i == count) {
/* not big enough. realloc the array */
krb5_data *p_tmp;
p_tmp = (krb5_data *) realloc((char *)data,
sizeof(krb5_data)*(count*2));
if (!p_tmp) {
free_out:
while (--i >= 0)
krb5_xfree(data[i].data);
krb5_xfree(data);
krb5_xfree(tmpdata);
return (ENOMEM);
}
count *= 2;
data = p_tmp;
}
data[i].length = strlen(next);
data[i].data = strdup(next);
if (!data[i].data)
goto free_out;
}
princ->data = data;
princ->length = i;
princ->type = KRB5_NT_UNKNOWN;
princ->magic = KV5M_PRINCIPAL;
return 0;
}
KRB5_DLLIMP krb5_error_code KRB5_CALLCONV_C
#ifdef HAVE_STDARG_H
krb5_build_principal(krb5_context context, krb5_principal * princ, int rlen,
const char * realm, ...)
#else
krb5_build_principal(context, princ, rlen, realm, va_alist)
krb5_context context;
krb5_principal *princ;
int rlen;
const char *realm;
va_dcl
#endif
{
va_list ap;
krb5_error_code retval;
krb5_principal pr_ret = (krb5_principal)malloc(sizeof(krb5_principal_data));
if (!pr_ret)
return ENOMEM;
#ifdef HAVE_STDARG_H
va_start(ap, realm);
#else
va_start(ap);
#endif
retval = krb5_build_principal_va(context, pr_ret, rlen, realm, ap);
va_end(ap);
if (retval == 0)
*princ = pr_ret;
return retval;
}
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