usr/src/lib/gss_mechs/mech_krb5/krb5/ccache/scc.h

   1 #pragma ident   "%Z%%M% %I%     %E% SMI"
   2
   3 /*
   4  * lib/krb5/ccache/stdio/scc.h
   5  *
   6  * Copyright 1990,1991 by the Massachusetts Institute of Technology.
   7  * All Rights Reserved.
   8  *
   9  * Export of this software from the United States of America may
  10  *   require a specific license from the United States Government.
  11  *   It is the responsibility of any person or organization contemplating
  12  *   export to obtain such a license before exporting.
  13  *
  14  * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
  15  * distribute this software and its documentation for any purpose and
  16  * without fee is hereby granted, provided that the above copyright
  17  * notice appear in all copies and that both that copyright notice and
  18  * this permission notice appear in supporting documentation, and that
  19  * the name of M.I.T. not be used in advertising or publicity pertaining
  20  * to distribution of the software without specific, written prior
  21  * permission.  Furthermore if you modify this software you must label
  22  * your software as modified software and not distribute it in such a
  23  * fashion that it might be confused with the original M.I.T. software.
  24  * M.I.T. makes no representations about the suitability of
  25  * this software for any purpose.  It is provided "as is" without express
  26  * or implied warranty.
  27  *
  28  *
  29  * This file contains constant and function declarations used in the
  30  * file-based credential cache routines.
  31  */
  32
  33 #ifndef __KRB5_FILE_CCACHE__
  34 #define __KRB5_FILE_CCACHE__
  35
  36 #include "k5-int.h"
  37 #include <stdio.h>
  38
  39 #define KRB5_OK 0
  40
  41 #define KRB5_SCC_MAXLEN 100
  42
  43 /*
  44  * SCC version 2 contains type information for principals.  SCC
  45  * version 1 does not.  The code will accept either, and depending on
  46  * what KRB5_SCC_DEFAULT_FVNO is set to, it will create version 1 or
  47  * version 2 SCC caches.
  48  *
  49  */
  50
  51 #define KRB5_SCC_FVNO_1   0x0501        /* krb v5, scc v1 */
  52 #define KRB5_SCC_FVNO_2   0x0502        /* krb v5, scc v2 */
  53 #define KRB5_SCC_FVNO_3   0x0503        /* krb v5, scc v3 */
  54 #define KRB5_SCC_FVNO_4   0x0504        /* krb v5, scc v4 */
  55
  56 #define SCC_OPEN_AND_ERASE      1
  57 #define SCC_OPEN_RDWR           2
  58 #define SCC_OPEN_RDONLY         3
  59
  60 /* Credential file header tags.
  61  * The header tags are constructed as:
  62  *     krb5_ui_2       tag
  63  *     krb5_ui_2       len
  64  *     krb5_octet      data[len]
  65  * This format allows for older versions of the fcc processing code to skip
  66  * past unrecognized tag formats.
  67  */
  68 #define SCC_TAG_DELTATIME       1
  69
  70 #ifndef TKT_ROOT
  71 #define TKT_ROOT "/tmp/tkt"
  72 #endif
  73
  74 /* macros to make checking flags easier */
  75 #define OPENCLOSE(id) (((krb5_scc_data *)id->data)->flags & KRB5_TC_OPENCLOSE)
  76
  77 typedef struct _krb5_scc_data {
  78      char *filename;
  79      FILE *file;
  80      krb5_flags flags;
  81      char stdio_buffer[BUFSIZ];
  82      int version;
  83 } krb5_scc_data;
  84
  85 /* An off_t can be arbitrarily complex */
  86 typedef struct _krb5_scc_cursor {
  87     long pos;
  88 } krb5_scc_cursor;
  89
  90 #define MAYBE_OPEN(context, ID, MODE) \
  91 {                                                                       \
  92     if (OPENCLOSE (ID)) {                                               \
  93         krb5_error_code maybe_open_ret = krb5_scc_open_file (context, ID,MODE); \
  94         if (maybe_open_ret) return maybe_open_ret; } }
  95
  96 #define MAYBE_CLOSE(context, ID, RET) \
  97 {                                                                       \
  98     if (OPENCLOSE (ID)) {                                               \
  99         krb5_error_code maybe_close_ret = krb5_scc_close_file (context, ID);    \
 100         if (!(RET)) RET = maybe_close_ret; } }
 101
 102 /* DO NOT ADD ANYTHING AFTER THIS #endif */
 103 #endif /* __KRB5_FILE_CCACHE__ */