xref: /illumos-gate/usr/src/lib/gss_mechs/mech_krb5/krb5/asn.1/asn1_get.h (revision 1da57d551424de5a9d469760be7c4b4d4f10a755)
1 /*
2  * src/lib/krb5/asn.1/asn1_get.h
3  *
4  * Copyright 1994 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 #ifndef __ASN1_GET_H__
28 #define __ASN1_GET_H__
29 
30 /* ASN.1 substructure decoding procedures */
31 
32 #include "k5-int.h"
33 #include "krbasn1.h"
34 #include "asn1buf.h"
35 
36 typedef struct {
37     asn1_class asn1class;
38     asn1_construction construction;
39     asn1_tagnum tagnum;
40     unsigned int length;
41     int indef;
42 } taginfo;
43 
44 asn1_error_code asn1_get_tag_2 (asn1buf *buf, taginfo *tinfo);
45 
46 #if 0
47 asn1_error_code asn1_get_tag_indef
48 	(asn1buf *buf,
49 		   asn1_class *Class,
50 		   asn1_construction *construction,
51 		   asn1_tagnum *tagnum,
52 		   unsigned int *retlen, int *indef);
53 
54 asn1_error_code asn1_get_tag
55 	(asn1buf *buf,
56 		   asn1_class *Class,
57 		   asn1_construction *construction,
58 		   asn1_tagnum *tagnum,
59 		   unsigned int *retlen);
60 /* requires  *buf is allocated
61    effects   Decodes the tag in *buf.  If class != NULL, returns
62               the class in *Class.  Similarly, the construction,
63 	      tag number, and length are returned in *construction,
64 	      *tagnum, and *retlen, respectively.
65 	     If *buf is empty to begin with,
66 	      *tagnum is set to ASN1_TAGNUM_CEILING.
67 	     Returns ASN1_OVERRUN if *buf is exhausted during the parse. */
68 #endif
69 
70 asn1_error_code asn1_get_sequence
71 	(asn1buf *buf, unsigned int *retlen, int *indef);
72 /* requires  *buf is allocated
73    effects   Decodes a tag from *buf and returns ASN1_BAD_ID if it
74               doesn't have a sequence ID.  If retlen != NULL, the
75 	      associated length is returned in *retlen. */
76 
77 #endif
78