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