1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
|
/*
* Portability wrapper around krb5.h.
*
* This header includes krb5.h and then adjusts for various portability
* issues, primarily between MIT Kerberos and Heimdal, so that code can be
* written to a consistent API.
*
* Unfortunately, due to the nature of the differences between MIT Kerberos
* and Heimdal, it's not possible to write code to either one of the APIs and
* adjust for the other one. In general, this header tries to make available
* the Heimdal API and fix it for MIT Kerberos, but there are places where MIT
* Kerberos requires a more specific call. For those cases, it provides the
* most specific interface.
*
* For example, MIT Kerberos has krb5_free_unparsed_name() whereas Heimdal
* prefers the generic krb5_xfree(). In this case, this header provides
* krb5_free_unparsed_name() for both APIs since it's the most specific call.
*
* Written by Russ Allbery <rra@stanford.edu>
* This work is hereby placed in the public domain by its author.
*/
#ifndef PORTABLE_KRB5_H
#define PORTABLE_KRB5_H 1
#include <config.h>
#include <portable/macros.h>
#include <krb5.h>
BEGIN_DECLS
/* Default to a hidden visibility for all portability functions. */
#pragma GCC visibility push(hidden)
/*
* krb5_{get,free}_error_message are the preferred APIs for both current MIT
* and current Heimdal, but there are tons of older APIs we may have to fall
* back on for earlier versions.
*
* This function should be called immediately after the corresponding error
* without any intervening Kerberos calls. Otherwise, the correct error
* message and supporting information may not be returned.
*/
#ifndef HAVE_KRB5_GET_ERROR_MESSAGE
const char *krb5_get_error_message(krb5_context, krb5_error_code);
#endif
#ifndef HAVE_KRB5_FREE_ERROR_MESSAGE
void krb5_free_error_message(krb5_context, const char *);
#endif
/*
* Both current MIT and current Heimdal prefer _opt_alloc, but older versions
* of both require allocating your own struct and calling _opt_init.
*/
#ifndef HAVE_KRB5_GET_INIT_CREDS_OPT_ALLOC
krb5_error_code krb5_get_init_creds_opt_alloc(krb5_context,
krb5_get_init_creds_opt **);
#endif
/* Heimdal-specific. */
#ifndef HAVE_KRB5_GET_INIT_CREDS_OPT_SET_DEFAULT_FLAGS
#define krb5_get_init_creds_opt_set_default_flags(c, p, r, o) /* empty */
#endif
/* Heimdal: krb5_kt_free_entry, MIT: krb5_free_keytab_entry_contents. */
#ifndef HAVE_KRB5_KT_FREE_ENTRY
# define krb5_kt_free_entry(c, e) krb5_free_keytab_entry_contents((c), (e))
#endif
/*
* Heimdal provides a nice function that just returns a const char *. On MIT,
* there's an accessor macro that returns the krb5_data pointer, wihch
* requires more work to get at the underlying char *.
*/
#ifndef HAVE_KRB5_PRINCIPAL_GET_REALM
const char *krb5_principal_get_realm(krb5_context, krb5_const_principal);
#endif
/* Undo default visibility change. */
#pragma GCC visibility pop
#endif /* !PORTABLE_KRB5_H */
|
