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/*
* lib/krb5/krb/srv_rcache.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.
*
*
* Allocate & prepare a default replay cache for a server.
*/
#include "k5-int.h"
#include <ctype.h>
#include <stdio.h>
/* Macro for valid RC name characters*/
#define isvalidrcname(x) ((!ispunct(x))&&isgraph(x))
krb5_error_code KRB5_CALLCONV
krb5_get_server_rcache(krb5_context context, const krb5_data *piece,
krb5_rcache *rcptr)
{
krb5_rcache rcache = 0;
char *cachename = 0, *cachetype;
krb5_error_code retval;
unsigned int i;
struct k5buf buf;
#ifdef HAVE_GETEUID
unsigned long uid = geteuid();
#endif
if (piece == NULL)
return ENOMEM;
cachetype = krb5_rc_default_type(context);
krb5int_buf_init_dynamic(&buf);
krb5int_buf_add(&buf, cachetype);
krb5int_buf_add(&buf, ":");
for (i = 0; i < piece->length; i++) {
if (piece->data[i] == '-')
krb5int_buf_add(&buf, "--");
else if (!isvalidrcname((int) piece->data[i]))
krb5int_buf_add_fmt(&buf, "-%03o", piece->data[i]);
else
krb5int_buf_add_len(&buf, &piece->data[i], 1);
}
#ifdef HAVE_GETEUID
krb5int_buf_add_fmt(&buf, "_%lu", uid);
#endif
cachename = krb5int_buf_data(&buf);
if (cachename == NULL)
return ENOMEM;
retval = krb5_rc_resolve_full(context, &rcache, cachename);
if (retval)
goto cleanup;
retval = krb5_rc_recover_or_initialize(context, rcache,
context->clockskew);
if (retval)
goto cleanup;
*rcptr = rcache;
rcache = 0;
retval = 0;
cleanup:
if (rcache)
krb5_rc_close(context, rcache);
if (cachename)
free(cachename);
return retval;
}
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