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/*
* $Source$
* $Author$
*
* Copyright 1990 by the Massachusetts Institute of Technology.
* All Rights Reserved.
*
* For copying and distribution information, please see the file
* <krb5/copyright.h>.
*
* krb5_db_store_mkey():
* Store a database master key in a file.
*/
#if !defined(lint) && !defined(SABER)
static char rcsid_store_mkey_c[] =
"$Id$";
#endif /* !lint & !SABER */
#include <krb5/krb5.h>
#include <krb5/kdb.h>
#include <krb5/libos-proto.h>
#include <krb5/ext-proto.h>
#include "kdbint.h"
#include <krb5/sysincl.h> /* for MAXPATHLEN */
/*
* Put the KDC database master key into a file. If keyfile is NULL,
* then a default name derived from the principal name mname is used.
*/
#ifndef min
#define min(a,b) (((a) < (b)) ? (a) : (b))
#endif
krb5_error_code
krb5_db_store_mkey(keyfile, mname, key)
char *keyfile;
krb5_principal mname;
krb5_keyblock *key;
{
FILE *kf;
krb5_error_code retval = 0;
char defkeyfile[MAXPATHLEN+1];
krb5_data *realm = krb5_princ_realm(mname);
#if defined(unix) || defined(__unix__)
int oumask;
#endif
if (!keyfile) {
(void) strcpy(defkeyfile, DEFAULT_KEYFILE_STUB);
(void) strncat(defkeyfile, realm->data,
min(sizeof(defkeyfile)-sizeof(DEFAULT_KEYFILE_STUB)-1,
realm->length));
(void) strcat(defkeyfile, "");
keyfile = defkeyfile;
}
#if defined(unix) || defined(__unix__)
oumask = umask(077);
#endif
if (!(kf = fopen(keyfile, "w"))) {
#if defined(unix) || defined(__unix__)
(void) umask(oumask);
#endif
return errno;
}
if ((fwrite((krb5_pointer) &key->keytype,
sizeof(key->keytype), 1, kf) != 1) ||
(fwrite((krb5_pointer) &key->length,
sizeof(key->length), 1, kf) != 1) ||
(fwrite((krb5_pointer) key->contents,
sizeof(key->contents[0]), key->length, kf) != key->length)) {
retval = errno;
(void) fclose(kf);
}
if (fclose(kf) == EOF)
retval = errno;
#if defined(unix) || defined(__unix__)
(void) umask(oumask);
#endif
return retval;
}
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