/*

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* Copyright 1995-2017 The OpenSSL Project Authors. All Rights Reserved.

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*

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* Licensed under the OpenSSL license (the "License"). You may not use

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* this file except in compliance with the License. You can obtain a copy

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* in the file LICENSE in the source distribution or at

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* https://www.openssl.org/source/license.html

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*/

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#ifndef HEADER_ASN1_H

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# define HEADER_ASN1_H

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# include <time.h>

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# include <openssl/e_os2.h>

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# include <openssl/opensslconf.h>

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# include <openssl/bio.h>

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# include <openssl/safestack.h>

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# include <openssl/asn1err.h>

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# include <openssl/symhacks.h>

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# include <openssl/ossl_typ.h>

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# if OPENSSL_API_COMPAT < 0x10100000L

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# include <openssl/bn.h>

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# endif

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# ifdef OPENSSL_BUILD_SHLIBCRYPTO

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# undef OPENSSL_EXTERN

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# define OPENSSL_EXTERN OPENSSL_EXPORT

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# endif

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#ifdef __cplusplus

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extern "C" {

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#endif

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# define V_ASN1_UNIVERSAL 0x00

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# define V_ASN1_APPLICATION 0x40

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# define V_ASN1_CONTEXT_SPECIFIC 0x80

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# define V_ASN1_PRIVATE 0xc0

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# define V_ASN1_CONSTRUCTED 0x20

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# define V_ASN1_PRIMITIVE_TAG 0x1f

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# define V_ASN1_PRIMATIVE_TAG /*compat*/ V_ASN1_PRIMITIVE_TAG

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# define V_ASN1_APP_CHOOSE -2/* let the recipient choose */

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# define V_ASN1_OTHER -3/* used in ASN1_TYPE */

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# define V_ASN1_ANY -4/* used in ASN1 template code */

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# define V_ASN1_UNDEF -1

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/* ASN.1 tag values */

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# define V_ASN1_EOC 0

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# define V_ASN1_BOOLEAN 1 /**/

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# define V_ASN1_INTEGER 2

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# define V_ASN1_BIT_STRING 3

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# define V_ASN1_OCTET_STRING 4

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# define V_ASN1_NULL 5

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# define V_ASN1_OBJECT 6

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# define V_ASN1_OBJECT_DESCRIPTOR 7

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# define V_ASN1_EXTERNAL 8

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# define V_ASN1_REAL 9

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# define V_ASN1_ENUMERATED 10

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# define V_ASN1_UTF8STRING 12

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# define V_ASN1_SEQUENCE 16

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# define V_ASN1_SET 17

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# define V_ASN1_NUMERICSTRING 18 /**/

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# define V_ASN1_PRINTABLESTRING 19

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# define V_ASN1_T61STRING 20

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# define V_ASN1_TELETEXSTRING 20/* alias */

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# define V_ASN1_VIDEOTEXSTRING 21 /**/

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# define V_ASN1_IA5STRING 22

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# define V_ASN1_UTCTIME 23

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# define V_ASN1_GENERALIZEDTIME 24 /**/

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# define V_ASN1_GRAPHICSTRING 25 /**/

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# define V_ASN1_ISO64STRING 26 /**/

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# define V_ASN1_VISIBLESTRING 26/* alias */

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# define V_ASN1_GENERALSTRING 27 /**/

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# define V_ASN1_UNIVERSALSTRING 28 /**/

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# define V_ASN1_BMPSTRING 30

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/*

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* NB the constants below are used internally by ASN1_INTEGER

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* and ASN1_ENUMERATED to indicate the sign. They are *not* on

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* the wire tag values.

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*/

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# define V_ASN1_NEG 0x100

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# define V_ASN1_NEG_INTEGER (2 | V_ASN1_NEG)

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# define V_ASN1_NEG_ENUMERATED (10 | V_ASN1_NEG)

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/* For use with d2i_ASN1_type_bytes() */

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# define B_ASN1_NUMERICSTRING 0x0001

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# define B_ASN1_PRINTABLESTRING 0x0002

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# define B_ASN1_T61STRING 0x0004

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# define B_ASN1_TELETEXSTRING 0x0004

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# define B_ASN1_VIDEOTEXSTRING 0x0008

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# define B_ASN1_IA5STRING 0x0010

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# define B_ASN1_GRAPHICSTRING 0x0020

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# define B_ASN1_ISO64STRING 0x0040

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# define B_ASN1_VISIBLESTRING 0x0040

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# define B_ASN1_GENERALSTRING 0x0080

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# define B_ASN1_UNIVERSALSTRING 0x0100

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# define B_ASN1_OCTET_STRING 0x0200

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# define B_ASN1_BIT_STRING 0x0400

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# define B_ASN1_BMPSTRING 0x0800

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# define B_ASN1_UNKNOWN 0x1000

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# define B_ASN1_UTF8STRING 0x2000

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# define B_ASN1_UTCTIME 0x4000

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# define B_ASN1_GENERALIZEDTIME 0x8000

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# define B_ASN1_SEQUENCE 0x10000

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/* For use with ASN1_mbstring_copy() */

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# define MBSTRING_FLAG 0x1000

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# define MBSTRING_UTF8 (MBSTRING_FLAG)

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# define MBSTRING_ASC (MBSTRING_FLAG|1)

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# define MBSTRING_BMP (MBSTRING_FLAG|2)

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# define MBSTRING_UNIV (MBSTRING_FLAG|4)

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# define SMIME_OLDMIME 0x400

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# define SMIME_CRLFEOL 0x800

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# define SMIME_STREAM 0x1000

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struct X509_algor_st;

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DEFINE_STACK_OF(X509_ALGOR)

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# define ASN1_STRING_FLAG_BITS_LEFT 0x08/* Set if 0x07 has bits left value */

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/*

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* This indicates that the ASN1_STRING is not a real value but just a place

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* holder for the location where indefinite length constructed data should be

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* inserted in the memory buffer

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*/

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# define ASN1_STRING_FLAG_NDEF 0x010

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/*

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* This flag is used by the CMS code to indicate that a string is not

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* complete and is a place holder for content when it had all been accessed.

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* The flag will be reset when content has been written to it.

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*/

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# define ASN1_STRING_FLAG_CONT 0x020

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/*

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* This flag is used by ASN1 code to indicate an ASN1_STRING is an MSTRING

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* type.

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*/

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# define ASN1_STRING_FLAG_MSTRING 0x040

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/* String is embedded and only content should be freed */

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# define ASN1_STRING_FLAG_EMBED 0x080

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/* String should be parsed in RFC 5280's time format */

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# define ASN1_STRING_FLAG_X509_TIME 0x100

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/* This is the base type that holds just about everything :-) */

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struct asn1_string_st {

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int length;

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int type;

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unsigned char *data;

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/*

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* The value of the following field depends on the type being held. It

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* is mostly being used for BIT_STRING so if the input data has a

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* non-zero 'unused bits' value, it will be handled correctly

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*/

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long flags;

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};

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/*

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* ASN1_ENCODING structure: this is used to save the received encoding of an

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* ASN1 type. This is useful to get round problems with invalid encodings

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* which can break signatures.

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*/

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typedef struct ASN1_ENCODING_st {

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unsigned char *enc; /* DER encoding */

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long len; /* Length of encoding */

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int modified; /* set to 1 if 'enc' is invalid */

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} ASN1_ENCODING;

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/* Used with ASN1 LONG type: if a long is set to this it is omitted */

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# define ASN1_LONG_UNDEF 0x7fffffffL

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# define STABLE_FLAGS_MALLOC 0x01

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/*

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* A zero passed to ASN1_STRING_TABLE_new_add for the flags is interpreted

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* as "don't change" and STABLE_FLAGS_MALLOC is always set. By setting

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* STABLE_FLAGS_MALLOC only we can clear the existing value. Use the alias

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* STABLE_FLAGS_CLEAR to reflect this.

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*/

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# define STABLE_FLAGS_CLEAR STABLE_FLAGS_MALLOC

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# define STABLE_NO_MASK 0x02

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# define DIRSTRING_TYPE \

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(B_ASN1_PRINTABLESTRING|B_ASN1_T61STRING|B_ASN1_BMPSTRING|B_ASN1_UTF8STRING)

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# define PKCS9STRING_TYPE (DIRSTRING_TYPE|B_ASN1_IA5STRING)

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typedef struct asn1_string_table_st {

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int nid;

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long minsize;

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long maxsize;

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unsigned long mask;

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unsigned long flags;

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} ASN1_STRING_TABLE;

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DEFINE_STACK_OF(ASN1_STRING_TABLE)

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/* size limits: this stuff is taken straight from RFC2459 */

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# define ub_name 32768

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# define ub_common_name 64

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# define ub_locality_name 128

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# define ub_state_name 128

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# define ub_organization_name 64

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# define ub_organization_unit_name 64

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# define ub_title 64

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# define ub_email_address 128

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/*

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* Declarations for template structures: for full definitions see asn1t.h

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*/

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typedef struct ASN1_TEMPLATE_st ASN1_TEMPLATE;

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typedef struct ASN1_TLC_st ASN1_TLC;

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/* This is just an opaque pointer */

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typedef struct ASN1_VALUE_st ASN1_VALUE;

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/* Declare ASN1 functions: the implement macro in in asn1t.h */

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# define DECLARE_ASN1_FUNCTIONS(type) DECLARE_ASN1_FUNCTIONS_name(type, type)

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# define DECLARE_ASN1_ALLOC_FUNCTIONS(type) \

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DECLARE_ASN1_ALLOC_FUNCTIONS_name(type, type)

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# define DECLARE_ASN1_FUNCTIONS_name(type, name) \

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DECLARE_ASN1_ALLOC_FUNCTIONS_name(type, name) \

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DECLARE_ASN1_ENCODE_FUNCTIONS(type, name, name)

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# define DECLARE_ASN1_FUNCTIONS_fname(type, itname, name) \

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DECLARE_ASN1_ALLOC_FUNCTIONS_name(type, name) \

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DECLARE_ASN1_ENCODE_FUNCTIONS(type, itname, name)

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# define DECLARE_ASN1_ENCODE_FUNCTIONS(type, itname, name) \

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type *d2i_##name(type **a, const unsigned char **in, long len); \

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int i2d_##name(type *a, unsigned char **out); \

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DECLARE_ASN1_ITEM(itname)

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# define DECLARE_ASN1_ENCODE_FUNCTIONS_const(type, name) \

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type *d2i_##name(type **a, const unsigned char **in, long len); \

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int i2d_##name(const type *a, unsigned char **out); \

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DECLARE_ASN1_ITEM(name)

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# define DECLARE_ASN1_NDEF_FUNCTION(name) \

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int i2d_##name##_NDEF(name *a, unsigned char **out);

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# define DECLARE_ASN1_FUNCTIONS_const(name) \

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DECLARE_ASN1_ALLOC_FUNCTIONS(name) \

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DECLARE_ASN1_ENCODE_FUNCTIONS_const(name, name)

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# define DECLARE_ASN1_ALLOC_FUNCTIONS_name(type, name) \

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type *name##_new(void); \

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void name##_free(type *a);

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# define DECLARE_ASN1_PRINT_FUNCTION(stname) \

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DECLARE_ASN1_PRINT_FUNCTION_fname(stname, stname)

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# define DECLARE_ASN1_PRINT_FUNCTION_fname(stname, fname) \

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int fname##_print_ctx(BIO *out, stname *x, int indent, \

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const ASN1_PCTX *pctx);

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# define D2I_OF(type) type *(*)(type **,const unsigned char **,long)

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# define I2D_OF(type) int (*)(type *,unsigned char **)

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# define I2D_OF_const(type) int (*)(const type *,unsigned char **)

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# define CHECKED_D2I_OF(type, d2i) \

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((d2i_of_void*) (1 ? d2i : ((D2I_OF(type))0)))

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# define CHECKED_I2D_OF(type, i2d) \

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((i2d_of_void*) (1 ? i2d : ((I2D_OF(type))0)))

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# define CHECKED_NEW_OF(type, xnew) \

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((void *(*)(void)) (1 ? xnew : ((type *(*)(void))0)))

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# define CHECKED_PTR_OF(type, p) \

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((void*) (1 ? p : (type*)0))

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# define CHECKED_PPTR_OF(type, p) \

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((void**) (1 ? p : (type**)0))

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# define TYPEDEF_D2I_OF(type) typedef type *d2i_of_##type(type **,const unsigned char **,long)

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# define TYPEDEF_I2D_OF(type) typedef int i2d_of_##type(type *,unsigned char **)

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# define TYPEDEF_D2I2D_OF(type) TYPEDEF_D2I_OF(type); TYPEDEF_I2D_OF(type)

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TYPEDEF_D2I2D_OF(void);

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/*-

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* The following macros and typedefs allow an ASN1_ITEM

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* to be embedded in a structure and referenced. Since

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* the ASN1_ITEM pointers need to be globally accessible

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* (possibly from shared libraries) they may exist in

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* different forms. On platforms that support it the

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* ASN1_ITEM structure itself will be globally exported.

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* Other platforms will export a function that returns

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* an ASN1_ITEM pointer.

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*

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* To handle both cases transparently the macros below

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* should be used instead of hard coding an ASN1_ITEM

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* pointer in a structure.

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*

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* The structure will look like this:

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*

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* typedef struct SOMETHING_st {

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* ...

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* ASN1_ITEM_EXP *iptr;

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* ...

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* } SOMETHING;

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*

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* It would be initialised as e.g.:

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*

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* SOMETHING somevar = {...,ASN1_ITEM_ref(X509),...};

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*

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* and the actual pointer extracted with:

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*

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* const ASN1_ITEM *it = ASN1_ITEM_ptr(somevar.iptr);

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*

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* Finally an ASN1_ITEM pointer can be extracted from an

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* appropriate reference with: ASN1_ITEM_rptr(X509). This

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* would be used when a function takes an ASN1_ITEM * argument.

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*

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*/

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# ifndef OPENSSL_EXPORT_VAR_AS_FUNCTION

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/* ASN1_ITEM pointer exported type */

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typedef const ASN1_ITEM ASN1_ITEM_EXP;

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/* Macro to obtain ASN1_ITEM pointer from exported type */

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# define ASN1_ITEM_ptr(iptr) (iptr)

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/* Macro to include ASN1_ITEM pointer from base type */

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# define ASN1_ITEM_ref(iptr) (&(iptr##_it))

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# define ASN1_ITEM_rptr(ref) (&(ref##_it))

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# define DECLARE_ASN1_ITEM(name) \

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OPENSSL_EXTERN const ASN1_ITEM name##_it;

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# else

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/*

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* Platforms that can't easily handle shared global variables are declared as

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* functions returning ASN1_ITEM pointers.

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*/

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/* ASN1_ITEM pointer exported type */

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typedef const ASN1_ITEM *ASN1_ITEM_EXP (void);

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/* Macro to obtain ASN1_ITEM pointer from exported type */

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# define ASN1_ITEM_ptr(iptr) (iptr())

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/* Macro to include ASN1_ITEM pointer from base type */

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# define ASN1_ITEM_ref(iptr) (iptr##_it)

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# define ASN1_ITEM_rptr(ref) (ref##_it())

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# define DECLARE_ASN1_ITEM(name) \

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const ASN1_ITEM * name##_it(void);

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# endif

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/* Parameters used by ASN1_STRING_print_ex() */

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/*

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* These determine which characters to escape: RFC2253 special characters,

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* control characters and MSB set characters

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*/

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# define ASN1_STRFLGS_ESC_2253 1

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# define ASN1_STRFLGS_ESC_CTRL 2

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# define ASN1_STRFLGS_ESC_MSB 4

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/*

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* This flag determines how we do escaping: normally RC2253 backslash only,

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* set this to use backslash and quote.

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*/

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# define ASN1_STRFLGS_ESC_QUOTE 8

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/* These three flags are internal use only. */

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/* Character is a valid PrintableString character */

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# define CHARTYPE_PRINTABLESTRING 0x10

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/* Character needs escaping if it is the first character */

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# define CHARTYPE_FIRST_ESC_2253 0x20

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/* Character needs escaping if it is the last character */

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# define CHARTYPE_LAST_ESC_2253 0x40

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/*

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* NB the internal flags are safely reused below by flags handled at the top

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* level.

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*/

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/*

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* If this is set we convert all character strings to UTF8 first

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*/

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# define ASN1_STRFLGS_UTF8_CONVERT 0x10

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/*

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* If this is set we don't attempt to interpret content: just assume all

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* strings are 1 byte per character. This will produce some pretty odd

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* looking output!

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*/

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# define ASN1_STRFLGS_IGNORE_TYPE 0x20

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/* If this is set we include the string type in the output */

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# define ASN1_STRFLGS_SHOW_TYPE 0x40

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/*

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* This determines which strings to display and which to 'dump' (hex dump of

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* content octets or DER encoding). We can only dump non character strings or

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* everything. If we don't dump 'unknown' they are interpreted as character

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* strings with 1 octet per character and are subject to the usual escaping

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* options.

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*/

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# define ASN1_STRFLGS_DUMP_ALL 0x80

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# define ASN1_STRFLGS_DUMP_UNKNOWN 0x100

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/*

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* These determine what 'dumping' does, we can dump the content octets or the

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* DER encoding: both use the RFC2253 #XXXXX notation.

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*/

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# define ASN1_STRFLGS_DUMP_DER 0x200

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/*

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* This flag specifies that RC2254 escaping shall be performed.

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*/

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#define ASN1_STRFLGS_ESC_2254 0x400

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/*

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* All the string flags consistent with RFC2253, escaping control characters

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* isn't essential in RFC2253 but it is advisable anyway.

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*/

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# define ASN1_STRFLGS_RFC2253 (ASN1_STRFLGS_ESC_2253 | \

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ASN1_STRFLGS_ESC_CTRL | \

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ASN1_STRFLGS_ESC_MSB | \

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ASN1_STRFLGS_UTF8_CONVERT | \

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ASN1_STRFLGS_DUMP_UNKNOWN | \

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ASN1_STRFLGS_DUMP_DER)

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DEFINE_STACK_OF(ASN1_INTEGER)

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DEFINE_STACK_OF(ASN1_GENERALSTRING)

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DEFINE_STACK_OF(ASN1_UTF8STRING)

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typedef struct asn1_type_st {

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int type;

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union {

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char *ptr;

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ASN1_BOOLEAN boolean;

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ASN1_STRING *asn1_string;

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ASN1_OBJECT *object;

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ASN1_INTEGER *integer;

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ASN1_ENUMERATED *enumerated;

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ASN1_BIT_STRING *bit_string;

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ASN1_OCTET_STRING *octet_string;

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ASN1_PRINTABLESTRING *printablestring;

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ASN1_T61STRING *t61string;

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ASN1_IA5STRING *ia5string;

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ASN1_GENERALSTRING *generalstring;

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ASN1_BMPSTRING *bmpstring;

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ASN1_UNIVERSALSTRING *universalstring;

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ASN1_UTCTIME *utctime;

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ASN1_GENERALIZEDTIME *generalizedtime;

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ASN1_VISIBLESTRING *visiblestring;

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ASN1_UTF8STRING *utf8string;

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/*

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* set and sequence are left complete and still contain the set or

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* sequence bytes

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*/

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ASN1_STRING *set;

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ASN1_STRING *sequence;

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ASN1_VALUE *asn1_value;

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} value;

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} ASN1_TYPE;

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DEFINE_STACK_OF(ASN1_TYPE)

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typedef STACK_OF(ASN1_TYPE) ASN1_SEQUENCE_ANY;

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DECLARE_ASN1_ENCODE_FUNCTIONS_const(ASN1_SEQUENCE_ANY, ASN1_SEQUENCE_ANY)

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DECLARE_ASN1_ENCODE_FUNCTIONS_const(ASN1_SEQUENCE_ANY, ASN1_SET_ANY)

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/* This is used to contain a list of bit names */

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typedef struct BIT_STRING_BITNAME_st {

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int bitnum;

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const char *lname;

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const char *sname;

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} BIT_STRING_BITNAME;

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# define B_ASN1_TIME \

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B_ASN1_UTCTIME | \

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B_ASN1_GENERALIZEDTIME

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# define B_ASN1_PRINTABLE \

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B_ASN1_NUMERICSTRING| \

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B_ASN1_PRINTABLESTRING| \

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B_ASN1_T61STRING| \

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B_ASN1_IA5STRING| \

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B_ASN1_BIT_STRING| \

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B_ASN1_UNIVERSALSTRING|\

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B_ASN1_BMPSTRING|\

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