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/*
* lib/krb5/ccache/file/fcc_gennew.c
*
* Copyright 1990,1991 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. 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 file contains the source code for krb5_fcc_generate_new.
*/
#define NEED_SOCKETS
#include <errno.h>
#include "fcc.h"
#include "k5-int.h"
#ifdef HAVE_NETINET_IN_H
#if !defined(_WINSOCKAPI_) && !defined(HAVE_MACSOCK_H)
#include <netinet/in.h>
#endif
#else
#error find some way to use net-byte-order file version numbers.
#endif
extern krb5_cc_ops krb5_fcc_ops;
/*
* Effects:
* Creates a new file cred cache whose name is guaranteed to be
* unique. The name begins with the string TKT_ROOT (from fcc.h).
* The cache is not opened, but the new filename is reserved.
*
* Returns:
* The filled in krb5_ccache id.
*
* Errors:
* KRB5_CC_NOMEM - there was insufficient memory to allocate the
* krb5_ccache. id is undefined.
* system errors (from open)
*/
krb5_error_code KRB5_CALLCONV
krb5_fcc_generate_new (context, id)
krb5_context context;
krb5_ccache *id;
{
krb5_ccache lid;
int ret;
krb5_error_code retcode = 0;
char scratch[sizeof(TKT_ROOT)+6+1]; /* +6 for the scratch part, +1 for
NUL */
/* Allocate memory */
lid = (krb5_ccache) malloc(sizeof(struct _krb5_ccache));
if (lid == NULL)
return KRB5_CC_NOMEM;
lid->ops = &krb5_fcc_ops;
(void) strcpy(scratch, TKT_ROOT);
(void) strcat(scratch, "XXXXXX");
mktemp(scratch);
lid->data = (krb5_pointer) malloc(sizeof(krb5_fcc_data));
if (lid->data == NULL) {
krb5_xfree(lid);
return KRB5_CC_NOMEM;
}
/*
* The file is initially closed at the end of this call...
*/
((krb5_fcc_data *) lid->data)->fd = -1;
((krb5_fcc_data *) lid->data)->filename = (char *)
malloc(strlen(scratch) + 1);
if (((krb5_fcc_data *) lid->data)->filename == NULL) {
krb5_xfree(((krb5_fcc_data *) lid->data));
krb5_xfree(lid);
return KRB5_CC_NOMEM;
}
((krb5_fcc_data *) lid->data)->flags = 0;
/* Set up the filename */
strcpy(((krb5_fcc_data *) lid->data)->filename, scratch);
/* Make sure the file name is reserved */
ret = THREEPARAMOPEN(((krb5_fcc_data *) lid->data)->filename,
O_CREAT | O_EXCL | O_WRONLY | O_BINARY, 0);
if (ret == -1) {
retcode = krb5_fcc_interpret(context, errno);
goto err_out;
} else {
krb5_int16 fcc_fvno = htons(context->fcc_default_format);
krb5_int16 fcc_flen = 0;
int errsave, cnt;
/* Ignore user's umask, set mode = 0600 */
#ifndef HAVE_FCHMOD
#ifdef HAVE_CHMOD
chmod(((krb5_fcc_data *) lid->data)->filename, S_IRUSR | S_IWUSR);
#endif
#else
fchmod(ret, S_IRUSR | S_IWUSR);
#endif
if ((cnt = write(ret, (char *)&fcc_fvno, sizeof(fcc_fvno)))
!= sizeof(fcc_fvno)) {
errsave = errno;
(void) close(ret);
(void) unlink(((krb5_fcc_data *) lid->data)->filename);
retcode = (cnt == -1) ? krb5_fcc_interpret(context, errsave) : KRB5_CC_IO;
goto err_out;
}
/* For version 4 we save a length for the rest of the header */
if (context->fcc_default_format == KRB5_FCC_FVNO_4) {
if ((cnt = write(ret, (char *)&fcc_flen, sizeof(fcc_flen)))
!= sizeof(fcc_flen)) {
errsave = errno;
(void) close(ret);
(void) unlink(((krb5_fcc_data *) lid->data)->filename);
retcode = (cnt == -1) ? krb5_fcc_interpret(context, errsave) : KRB5_CC_IO;
goto err_out;
}
}
if (close(ret) == -1) {
errsave = errno;
(void) unlink(((krb5_fcc_data *) lid->data)->filename);
retcode = krb5_fcc_interpret(context, errsave);
goto err_out;
}
*id = lid;
krb5_change_cache ();
return KRB5_OK;
}
err_out:
krb5_xfree(((krb5_fcc_data *) lid->data)->filename);
krb5_xfree(((krb5_fcc_data *) lid->data));
krb5_xfree(lid);
return retcode;
}
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