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/* asn1t.h / / * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project * 2000. / / ==================================================================== * Copyright (c) 2000-2005 The OpenSSL Project. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * 3. All advertising materials mentioning features or use of this * software must display the following acknowledgment: * "This product includes software developed by the OpenSSL Project * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" * * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to * endorse or promote products derived from this software without * prior written permission. For written permission, please contact * licensing@OpenSSL.org. * * 5. Products derived from this software may not be called "OpenSSL" * nor may "OpenSSL" appear in their names without prior written * permission of the OpenSSL Project. * * 6. Redistributions of any form whatsoever must retain the following * acknowledgment: * "This product includes software developed by the OpenSSL Project * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" * * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * ==================================================================== * * This product includes cryptographic software written by Eric Young * (eay@cryptsoft.com). This product includes software written by Tim * Hudson (tjh@cryptsoft.com). * / #ifndef HEADER_ASN1T_H # define HEADER_ASN1T_H # include <stddef.h> # include <openssl/e_os2.h> # include <openssl/asn1.h> # ifdef OPENSSL_BUILD_SHLIBCRYPTO # undef OPENSSL_EXTERN # define OPENSSL_EXTERN OPENSSL_EXPORT # endif / ASN1 template defines, structures and functions / #ifdef __cplusplus extern "C" { #endif # ifndef OPENSSL_EXPORT_VAR_AS_FUNCTION / Macro to obtain ASN1_ADB pointer from a type (only used internally) / # define ASN1_ADB_ptr(iptr) ((const ASN1_ADB )(iptr)) /* Macros for start and end of ASN1_ITEM definition / # define ASN1_ITEM_start(itname) \ OPENSSL_GLOBAL const ASN1_ITEM itname##_it = { # define ASN1_ITEM_end(itname) \ }; # else / Macro to obtain ASN1_ADB pointer from a type (only used internally) / # define ASN1_ADB_ptr(iptr) ((const ASN1_ADB )(iptr())) /* Macros for start and end of ASN1_ITEM definition / # define ASN1_ITEM_start(itname) \ const ASN1_ITEM itname##_it(void) \ { \ static const ASN1_ITEM local_it = { # define ASN1_ITEM_end(itname) \ }; \ return &local_it; \ } # endif /* Macros to aid ASN1 template writing / # define ASN1_ITEM_TEMPLATE(tname) \ static const ASN1_TEMPLATE tname##_item_tt # define ASN1_ITEM_TEMPLATE_END(tname) \ ;\ ASN1_ITEM_start(tname) \ ASN1_ITYPE_PRIMITIVE,\ -1,\ &tname##_item_tt,\ 0,\ NULL,\ 0,\ #tname \ ASN1_ITEM_end(tname) / This is a ASN1 type which just embeds a template / /- * This pair helps declare a SEQUENCE. We can do: * * ASN1_SEQUENCE(stname) = { * ... SEQUENCE components ... * } ASN1_SEQUENCE_END(stname) * * This will produce an ASN1_ITEM called stname_it * for a structure called stname. * * If you want the same structure but a different * name then use: * * ASN1_SEQUENCE(itname) = { * ... SEQUENCE components ... * } ASN1_SEQUENCE_END_name(stname, itname) * * This will create an item called itname_it using * a structure called stname. / # define ASN1_SEQUENCE(tname) \ static const ASN1_TEMPLATE tname##_seq_tt[] # define ASN1_SEQUENCE_END(stname) ASN1_SEQUENCE_END_name(stname, stname) # define ASN1_SEQUENCE_END_name(stname, tname) \ ;\ ASN1_ITEM_start(tname) \ ASN1_ITYPE_SEQUENCE,\ V_ASN1_SEQUENCE,\ tname##_seq_tt,\ sizeof(tname##_seq_tt) / sizeof(ASN1_TEMPLATE),\ NULL,\ sizeof(stname),\ #stname \ ASN1_ITEM_end(tname) # define ASN1_NDEF_SEQUENCE(tname) \ ASN1_SEQUENCE(tname) # define ASN1_NDEF_SEQUENCE_cb(tname, cb) \ ASN1_SEQUENCE_cb(tname, cb) # define ASN1_SEQUENCE_cb(tname, cb) \ static const ASN1_AUX tname##_aux = {NULL, 0, 0, 0, cb, 0}; \ ASN1_SEQUENCE(tname) # define ASN1_BROKEN_SEQUENCE(tname) \ static const ASN1_AUX tname##_aux = {NULL, ASN1_AFLG_BROKEN, 0, 0, 0, 0}; \ ASN1_SEQUENCE(tname) # define ASN1_SEQUENCE_ref(tname, cb, lck) \ static const ASN1_AUX tname##_aux = {NULL, ASN1_AFLG_REFCOUNT, offsetof(tname, references), lck, cb, 0}; \ ASN1_SEQUENCE(tname) # define ASN1_SEQUENCE_enc(tname, enc, cb) \ static const ASN1_AUX tname##_aux = {NULL, ASN1_AFLG_ENCODING, 0, 0, cb, offsetof(tname, enc)}; \ ASN1_SEQUENCE(tname) # define ASN1_NDEF_SEQUENCE_END(tname) \ ;\ ASN1_ITEM_start(tname) \ ASN1_ITYPE_NDEF_SEQUENCE,\ V_ASN1_SEQUENCE,\ tname##_seq_tt,\ sizeof(tname##_seq_tt) / sizeof(ASN1_TEMPLATE),\ NULL,\ sizeof(tname),\ #tname \ ASN1_ITEM_end(tname) # define ASN1_BROKEN_SEQUENCE_END(stname) ASN1_SEQUENCE_END_ref(stname, stname) # define ASN1_SEQUENCE_END_enc(stname, tname) ASN1_SEQUENCE_END_ref(stname, tname) # define ASN1_SEQUENCE_END_cb(stname, tname) ASN1_SEQUENCE_END_ref(stname, tname) # define ASN1_SEQUENCE_END_ref(stname, tname) \ ;\ ASN1_ITEM_start(tname) \ ASN1_ITYPE_SEQUENCE,\ V_ASN1_SEQUENCE,\ tname##_seq_tt,\ sizeof(tname##_seq_tt) / sizeof(ASN1_TEMPLATE),\ &tname##_aux,\ sizeof(stname),\ #stname \ ASN1_ITEM_end(tname) # define ASN1_NDEF_SEQUENCE_END_cb(stname, tname) \ ;\ ASN1_ITEM_start(tname) \ ASN1_ITYPE_NDEF_SEQUENCE,\ V_ASN1_SEQUENCE,\ tname##_seq_tt,\ sizeof(tname##_seq_tt) / sizeof(ASN1_TEMPLATE),\ &tname##_aux,\ sizeof(stname),\ #stname \ ASN1_ITEM_end(tname) /- * This pair helps declare a CHOICE type. We can do: * * ASN1_CHOICE(chname) = { * ... CHOICE options ... * ASN1_CHOICE_END(chname) * * This will produce an ASN1_ITEM called chname_it * for a structure called chname. The structure * definition must look like this: * typedef struct { * int type; * union { * ASN1_SOMETHING opt1; ASN1_SOMEOTHER opt2; } value; * } chname; * * the name of the selector must be 'type'. * to use an alternative selector name use the * ASN1_CHOICE_END_selector() version. / # define ASN1_CHOICE(tname) \ static const ASN1_TEMPLATE tname##_ch_tt[] # define ASN1_CHOICE_cb(tname, cb) \ static const ASN1_AUX tname##_aux = {NULL, 0, 0, 0, cb, 0}; \ ASN1_CHOICE(tname) # define ASN1_CHOICE_END(stname) ASN1_CHOICE_END_name(stname, stname) # define ASN1_CHOICE_END_name(stname, tname) ASN1_CHOICE_END_selector(stname, tname, type) # define ASN1_CHOICE_END_selector(stname, tname, selname) \ ;\ ASN1_ITEM_start(tname) \ ASN1_ITYPE_CHOICE,\ offsetof(stname,selname) ,\ tname##_ch_tt,\ sizeof(tname##_ch_tt) / sizeof(ASN1_TEMPLATE),\ NULL,\ sizeof(stname),\ #stname \ ASN1_ITEM_end(tname) # define ASN1_CHOICE_END_cb(stname, tname, selname) \ ;\ ASN1_ITEM_start(tname) \ ASN1_ITYPE_CHOICE,\ offsetof(stname,selname) ,\ tname##_ch_tt,\ sizeof(tname##_ch_tt) / sizeof(ASN1_TEMPLATE),\ &tname##_aux,\ sizeof(stname),\ #stname \ ASN1_ITEM_end(tname) / This helps with the template wrapper form of ASN1_ITEM / # define ASN1_EX_TEMPLATE_TYPE(flags, tag, name, type) { \ (flags), (tag), 0,\ #name, ASN1_ITEM_ref(type) } / These help with SEQUENCE or CHOICE components / / used to declare other types / # define ASN1_EX_TYPE(flags, tag, stname, field, type) { \ (flags), (tag), offsetof(stname, field),\ #field, ASN1_ITEM_ref(type) } / used when the structure is combined with the parent / # define ASN1_EX_COMBINE(flags, tag, type) { \ (flags)\|ASN1_TFLG_COMBINE, (tag), 0, NULL, ASN1_ITEM_ref(type) } / implicit and explicit helper macros / # define ASN1_IMP_EX(stname, field, type, tag, ex) \ ASN1_EX_TYPE(ASN1_TFLG_IMPLICIT \| ex, tag, stname, field, type) # define ASN1_EXP_EX(stname, field, type, tag, ex) \ ASN1_EX_TYPE(ASN1_TFLG_EXPLICIT \| ex, tag, stname, field, type) / Any defined by macros: the field used is in the table itself / # ifndef OPENSSL_EXPORT_VAR_AS_FUNCTION # define ASN1_ADB_OBJECT(tblname) { ASN1_TFLG_ADB_OID, -1, 0, #tblname, (const ASN1_ITEM )&(tblname##_adb) } # define ASN1_ADB_INTEGER(tblname) { ASN1_TFLG_ADB_INT, -1, 0, #tblname, (const ASN1_ITEM )&(tblname##_adb) } # else # define ASN1_ADB_OBJECT(tblname) { ASN1_TFLG_ADB_OID, -1, 0, #tblname, tblname##_adb } # define ASN1_ADB_INTEGER(tblname) { ASN1_TFLG_ADB_INT, -1, 0, #tblname, tblname##_adb } # endif / Plain simple type / # define ASN1_SIMPLE(stname, field, type) ASN1_EX_TYPE(0,0, stname, field, type) / OPTIONAL simple type / # define ASN1_OPT(stname, field, type) ASN1_EX_TYPE(ASN1_TFLG_OPTIONAL, 0, stname, field, type) / IMPLICIT tagged simple type / # define ASN1_IMP(stname, field, type, tag) ASN1_IMP_EX(stname, field, type, tag, 0) / IMPLICIT tagged OPTIONAL simple type / # define ASN1_IMP_OPT(stname, field, type, tag) ASN1_IMP_EX(stname, field, type, tag, ASN1_TFLG_OPTIONAL) / Same as above but EXPLICIT / # define ASN1_EXP(stname, field, type, tag) ASN1_EXP_EX(stname, field, type, tag, 0) # define ASN1_EXP_OPT(stname, field, type, tag) ASN1_EXP_EX(stname, field, type, tag, ASN1_TFLG_OPTIONAL) / SEQUENCE OF type / # define ASN1_SEQUENCE_OF(stname, field, type) \ ASN1_EX_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, stname, field, type) / OPTIONAL SEQUENCE OF / # define ASN1_SEQUENCE_OF_OPT(stname, field, type) \ ASN1_EX_TYPE(ASN1_TFLG_SEQUENCE_OF\|ASN1_TFLG_OPTIONAL, 0, stname, field, type) / Same as above but for SET OF / # define ASN1_SET_OF(stname, field, type) \ ASN1_EX_TYPE(ASN1_TFLG_SET_OF, 0, stname, field, type) # define ASN1_SET_OF_OPT(stname, field, type) \ ASN1_EX_TYPE(ASN1_TFLG_SET_OF\|ASN1_TFLG_OPTIONAL, 0, stname, field, type) / Finally compound types of SEQUENCE, SET, IMPLICIT, EXPLICIT and OPTIONAL / # define ASN1_IMP_SET_OF(stname, field, type, tag) \ ASN1_IMP_EX(stname, field, type, tag, ASN1_TFLG_SET_OF) # define ASN1_EXP_SET_OF(stname, field, type, tag) \ ASN1_EXP_EX(stname, field, type, tag, ASN1_TFLG_SET_OF) # define ASN1_IMP_SET_OF_OPT(stname, field, type, tag) \ ASN1_IMP_EX(stname, field, type, tag, ASN1_TFLG_SET_OF\|ASN1_TFLG_OPTIONAL) # define ASN1_EXP_SET_OF_OPT(stname, field, type, tag) \ ASN1_EXP_EX(stname, field, type, tag, ASN1_TFLG_SET_OF\|ASN1_TFLG_OPTIONAL) # define ASN1_IMP_SEQUENCE_OF(stname, field, type, tag) \ ASN1_IMP_EX(stname, field, type, tag, ASN1_TFLG_SEQUENCE_OF) # define ASN1_IMP_SEQUENCE_OF_OPT(stname, field, type, tag) \ ASN1_IMP_EX(stname, field, type, tag, ASN1_TFLG_SEQUENCE_OF\|ASN1_TFLG_OPTIONAL) # define ASN1_EXP_SEQUENCE_OF(stname, field, type, tag) \ ASN1_EXP_EX(stname, field, type, tag, ASN1_TFLG_SEQUENCE_OF) # define ASN1_EXP_SEQUENCE_OF_OPT(stname, field, type, tag) \ ASN1_EXP_EX(stname, field, type, tag, ASN1_TFLG_SEQUENCE_OF\|ASN1_TFLG_OPTIONAL) / EXPLICIT using indefinite length constructed form / # define ASN1_NDEF_EXP(stname, field, type, tag) \ ASN1_EXP_EX(stname, field, type, tag, ASN1_TFLG_NDEF) / EXPLICIT OPTIONAL using indefinite length constructed form / # define ASN1_NDEF_EXP_OPT(stname, field, type, tag) \ ASN1_EXP_EX(stname, field, type, tag, ASN1_TFLG_OPTIONAL\|ASN1_TFLG_NDEF) / Macros for the ASN1_ADB structure / # define ASN1_ADB(name) \ static const ASN1_ADB_TABLE name##_adbtbl[] # ifndef OPENSSL_EXPORT_VAR_AS_FUNCTION # define ASN1_ADB_END(name, flags, field, app_table, def, none) \ ;\ static const ASN1_ADB name##_adb = {\ flags,\ offsetof(name, field),\ app_table,\ name##_adbtbl,\ sizeof(name##_adbtbl) / sizeof(ASN1_ADB_TABLE),\ def,\ none\ } # else # define ASN1_ADB_END(name, flags, field, app_table, def, none) \ ;\ static const ASN1_ITEM name##_adb(void) \ { \ static const ASN1_ADB internal_adb = \ {\ flags,\ offsetof(name, field),\ app_table,\ name##_adbtbl,\ sizeof(name##_adbtbl) / sizeof(ASN1_ADB_TABLE),\ def,\ none\ }; \ return (const ASN1_ITEM ) &internal_adb; \ } \ void dummy_function(void) # endif # define ADB_ENTRY(val, template) {val, template} # define ASN1_ADB_TEMPLATE(name) \ static const ASN1_TEMPLATE name##_tt / * This is the ASN1 template structure that defines a wrapper round the * actual type. It determines the actual position of the field in the value * structure, various flags such as OPTIONAL and the field name. / struct ASN1_TEMPLATE_st { unsigned long flags; / Various flags / long tag; / tag, not used if no tagging / unsigned long offset; / Offset of this field in structure / # ifndef NO_ASN1_FIELD_NAMES const char field_name; /* Field name / # endif ASN1_ITEM_EXP item; /* Relevant ASN1_ITEM or ASN1_ADB / }; / Macro to extract ASN1_ITEM and ASN1_ADB pointer from ASN1_TEMPLATE / # define ASN1_TEMPLATE_item(t) (t->item_ptr) # define ASN1_TEMPLATE_adb(t) (t->item_ptr) typedef struct ASN1_ADB_TABLE_st ASN1_ADB_TABLE; typedef struct ASN1_ADB_st ASN1_ADB; struct ASN1_ADB_st { unsigned long flags; / Various flags / unsigned long offset; / Offset of selector field / STACK_OF(ASN1_ADB_TABLE) app_items; / Application defined items / const ASN1_ADB_TABLE tbl; /* Table of possible types / long tblcount; / Number of entries in tbl / const ASN1_TEMPLATE default_tt; /* Type to use if no match / const ASN1_TEMPLATE null_tt; /* Type to use if selector is NULL / }; struct ASN1_ADB_TABLE_st { long value; / NID for an object or value for an int / const ASN1_TEMPLATE tt; / item for this value / }; / template flags / / Field is optional / # define ASN1_TFLG_OPTIONAL (0x1) / Field is a SET OF / # define ASN1_TFLG_SET_OF (0x1 << 1) / Field is a SEQUENCE OF / # define ASN1_TFLG_SEQUENCE_OF (0x2 << 1) / * Special case: this refers to a SET OF that will be sorted into DER order * when encoded and the corresponding STACK will be modified to match the * new order. / # define ASN1_TFLG_SET_ORDER (0x3 << 1) / Mask for SET OF or SEQUENCE OF / # define ASN1_TFLG_SK_MASK (0x3 << 1) / * These flags mean the tag should be taken from the tag field. If EXPLICIT * then the underlying type is used for the inner tag. / / IMPLICIT tagging / # define ASN1_TFLG_IMPTAG (0x1 << 3) / EXPLICIT tagging, inner tag from underlying type / # define ASN1_TFLG_EXPTAG (0x2 << 3) # define ASN1_TFLG_TAG_MASK (0x3 << 3) / context specific IMPLICIT / # define ASN1_TFLG_IMPLICIT ASN1_TFLG_IMPTAG\|ASN1_TFLG_CONTEXT / context specific EXPLICIT / # define ASN1_TFLG_EXPLICIT ASN1_TFLG_EXPTAG\|ASN1_TFLG_CONTEXT / * If tagging is in force these determine the type of tag to use. Otherwise * the tag is determined by the underlying type. These values reflect the * actual octet format. / / Universal tag / # define ASN1_TFLG_UNIVERSAL (0x0<<6) / Application tag / # define ASN1_TFLG_APPLICATION (0x1<<6) / Context specific tag / # define ASN1_TFLG_CONTEXT (0x2<<6) / Private tag / # define ASN1_TFLG_PRIVATE (0x3<<6) # define ASN1_TFLG_TAG_CLASS (0x3<<6) / * These are for ANY DEFINED BY type. In this case the 'item' field points to * an ASN1_ADB structure which contains a table of values to decode the * relevant type / # define ASN1_TFLG_ADB_MASK (0x3<<8) # define ASN1_TFLG_ADB_OID (0x1<<8) # define ASN1_TFLG_ADB_INT (0x1<<9) / * This flag means a parent structure is passed instead of the field: this is * useful is a SEQUENCE is being combined with a CHOICE for example. Since * this means the structure and item name will differ we need to use the * ASN1_CHOICE_END_name() macro for example. / # define ASN1_TFLG_COMBINE (0x1<<10) / * This flag when present in a SEQUENCE OF, SET OF or EXPLICIT causes * indefinite length constructed encoding to be used if required. / # define ASN1_TFLG_NDEF (0x1<<11) / This is the actual ASN1 item itself / struct ASN1_ITEM_st { char itype; / The item type, primitive, SEQUENCE, CHOICE * or extern / long utype; / underlying type / const ASN1_TEMPLATE templates; /* If SEQUENCE or CHOICE this contains * the contents / long tcount; / Number of templates if SEQUENCE or CHOICE / const void funcs; /* functions that handle this type / long size; / Structure size (usually) / # ifndef NO_ASN1_FIELD_NAMES const char sname; /* Structure name / # endif }; /- * These are values for the itype field and * determine how the type is interpreted. * * For PRIMITIVE types the underlying type * determines the behaviour if items is NULL. * * Otherwise templates must contain a single * template and the type is treated in the * same way as the type specified in the template. * * For SEQUENCE types the templates field points * to the members, the size field is the * structure size. * * For CHOICE types the templates field points * to each possible member (typically a union) * and the 'size' field is the offset of the * selector. * * The 'funcs' field is used for application * specific functions. * * For COMPAT types the funcs field gives a * set of functions that handle this type, this * supports the old d2i, i2d convention. * * The EXTERN type uses a new style d2i/i2d. * The new style should be used where possible * because it avoids things like the d2i IMPLICIT * hack. * * MSTRING is a multiple string type, it is used * for a CHOICE of character strings where the * actual strings all occupy an ASN1_STRING * structure. In this case the 'utype' field * has a special meaning, it is used as a mask * of acceptable types using the B_ASN1 constants. * * NDEF_SEQUENCE is the same as SEQUENCE except * that it will use indefinite length constructed * encoding if requested. * / # define ASN1_ITYPE_PRIMITIVE 0x0 # define ASN1_ITYPE_SEQUENCE 0x1 # define ASN1_ITYPE_CHOICE 0x2 # define ASN1_ITYPE_COMPAT 0x3 # define ASN1_ITYPE_EXTERN 0x4 # define ASN1_ITYPE_MSTRING 0x5 # define ASN1_ITYPE_NDEF_SEQUENCE 0x6 / * Cache for ASN1 tag and length, so we don't keep re-reading it for things * like CHOICE / struct ASN1_TLC_st { char valid; / Values below are valid / int ret; / return value / long plen; / length / int ptag; / class value / int pclass; / class value / int hdrlen; / header length / }; / Typedefs for ASN1 function pointers / typedef ASN1_VALUE ASN1_new_func(void); typedef void ASN1_free_func(ASN1_VALUE a); typedef ASN1_VALUE ASN1_d2i_func(ASN1_VALUE a, const unsigned char in, long length); typedef int ASN1_i2d_func(ASN1_VALUE a, unsigned char in); typedef int ASN1_ex_d2i(ASN1_VALUE pval, const unsigned char in, long len, const ASN1_ITEM it, int tag, int aclass, char opt, ASN1_TLC ctx); typedef int ASN1_ex_i2d(ASN1_VALUE pval, unsigned char out, const ASN1_ITEM it, int tag, int aclass); typedef int ASN1_ex_new_func(ASN1_VALUE *pval, const ASN1_ITEM it); typedef void ASN1_ex_free_func(ASN1_VALUE *pval, const ASN1_ITEM it); typedef int ASN1_ex_print_func(BIO out, ASN1_VALUE pval, int indent, const char fname, const ASN1_PCTX pctx); typedef int ASN1_primitive_i2c(ASN1_VALUE pval, unsigned char cont, int putype, const ASN1_ITEM it); typedef int ASN1_primitive_c2i(ASN1_VALUE *pval, const unsigned char cont, int len, int utype, char free_cont, const ASN1_ITEM it); typedef int ASN1_primitive_print(BIO out, ASN1_VALUE pval, const ASN1_ITEM it, int indent, const ASN1_PCTX pctx); typedef struct ASN1_COMPAT_FUNCS_st { ASN1_new_func asn1_new; ASN1_free_func asn1_free; ASN1_d2i_func asn1_d2i; ASN1_i2d_func asn1_i2d; } ASN1_COMPAT_FUNCS; typedef struct ASN1_EXTERN_FUNCS_st { void app_data; ASN1_ex_new_func asn1_ex_new; ASN1_ex_free_func asn1_ex_free; ASN1_ex_free_func asn1_ex_clear; ASN1_ex_d2i asn1_ex_d2i; ASN1_ex_i2d asn1_ex_i2d; ASN1_ex_print_func asn1_ex_print; } ASN1_EXTERN_FUNCS; typedef struct ASN1_PRIMITIVE_FUNCS_st { void app_data; unsigned long flags; ASN1_ex_new_func prim_new; ASN1_ex_free_func prim_free; ASN1_ex_free_func prim_clear; ASN1_primitive_c2i prim_c2i; ASN1_primitive_i2c prim_i2c; ASN1_primitive_print prim_print; } ASN1_PRIMITIVE_FUNCS; / * This is the ASN1_AUX structure: it handles various miscellaneous * requirements. For example the use of reference counts and an informational * callback. The "informational callback" is called at various points during * the ASN1 encoding and decoding. It can be used to provide minor * customisation of the structures used. This is most useful where the * supplied routines almost do the right thing but need some extra help at * a few points. If the callback returns zero then it is assumed a fatal * error has occurred and the main operation should be abandoned. If major * changes in the default behaviour are required then an external type is * more appropriate. / typedef int ASN1_aux_cb(int operation, ASN1_VALUE in, const ASN1_ITEM it, void exarg); typedef struct ASN1_AUX_st { void app_data; int flags; int ref_offset; /* Offset of reference value / int ref_lock; / Lock type to use / ASN1_aux_cb asn1_cb; int enc_offset; /* Offset of ASN1_ENCODING structure / } ASN1_AUX; / For print related callbacks exarg points to this structure / typedef struct ASN1_PRINT_ARG_st { BIO out; int indent; const ASN1_PCTX pctx; } ASN1_PRINT_ARG; / For streaming related callbacks exarg points to this structure / typedef struct ASN1_STREAM_ARG_st { / BIO to stream through / BIO out; /* BIO with filters appended / BIO ndef_bio; /* Streaming I/O boundary / unsigned char boundary; } ASN1_STREAM_ARG; / Flags in ASN1_AUX / / Use a reference count / # define ASN1_AFLG_REFCOUNT 1 / Save the encoding of structure (useful for signatures) / # define ASN1_AFLG_ENCODING 2 / The Sequence length is invalid / # define ASN1_AFLG_BROKEN 4 / operation values for asn1_cb / # define ASN1_OP_NEW_PRE 0 # define ASN1_OP_NEW_POST 1 # define ASN1_OP_FREE_PRE 2 # define ASN1_OP_FREE_POST 3 # define ASN1_OP_D2I_PRE 4 # define ASN1_OP_D2I_POST 5 # define ASN1_OP_I2D_PRE 6 # define ASN1_OP_I2D_POST 7 # define ASN1_OP_PRINT_PRE 8 # define ASN1_OP_PRINT_POST 9 # define ASN1_OP_STREAM_PRE 10 # define ASN1_OP_STREAM_POST 11 # define ASN1_OP_DETACHED_PRE 12 # define ASN1_OP_DETACHED_POST 13 / Macro to implement a primitive type / # define IMPLEMENT_ASN1_TYPE(stname) IMPLEMENT_ASN1_TYPE_ex(stname, stname, 0) # define IMPLEMENT_ASN1_TYPE_ex(itname, vname, ex) \ ASN1_ITEM_start(itname) \ ASN1_ITYPE_PRIMITIVE, V_##vname, NULL, 0, NULL, ex, #itname \ ASN1_ITEM_end(itname) / Macro to implement a multi string type / # define IMPLEMENT_ASN1_MSTRING(itname, mask) \ ASN1_ITEM_start(itname) \ ASN1_ITYPE_MSTRING, mask, NULL, 0, NULL, sizeof(ASN1_STRING), #itname \ ASN1_ITEM_end(itname) / Macro to implement an ASN1_ITEM in terms of old style funcs / # define IMPLEMENT_COMPAT_ASN1(sname) IMPLEMENT_COMPAT_ASN1_type(sname, V_ASN1_SEQUENCE) # define IMPLEMENT_COMPAT_ASN1_type(sname, tag) \ static const ASN1_COMPAT_FUNCS sname##_ff = { \ (ASN1_new_func )sname##_new, \ (ASN1_free_func )sname##_free, \ (ASN1_d2i_func )d2i_##sname, \ (ASN1_i2d_func )i2d_##sname, \ }; \ ASN1_ITEM_start(sname) \ ASN1_ITYPE_COMPAT, \ tag, \ NULL, \ 0, \ &sname##_ff, \ 0, \ #sname \ ASN1_ITEM_end(sname) # define IMPLEMENT_EXTERN_ASN1(sname, tag, fptrs) \ ASN1_ITEM_start(sname) \ ASN1_ITYPE_EXTERN, \ tag, \ NULL, \ 0, \ &fptrs, \ 0, \ #sname \ ASN1_ITEM_end(sname) / Macro to implement standard functions in terms of ASN1_ITEM structures / # define IMPLEMENT_ASN1_FUNCTIONS(stname) IMPLEMENT_ASN1_FUNCTIONS_fname(stname, stname, stname) # define IMPLEMENT_ASN1_FUNCTIONS_name(stname, itname) IMPLEMENT_ASN1_FUNCTIONS_fname(stname, itname, itname) # define IMPLEMENT_ASN1_FUNCTIONS_ENCODE_name(stname, itname) \ IMPLEMENT_ASN1_FUNCTIONS_ENCODE_fname(stname, itname, itname) # define IMPLEMENT_STATIC_ASN1_ALLOC_FUNCTIONS(stname) \ IMPLEMENT_ASN1_ALLOC_FUNCTIONS_pfname(static, stname, stname, stname) # define IMPLEMENT_ASN1_ALLOC_FUNCTIONS(stname) \ IMPLEMENT_ASN1_ALLOC_FUNCTIONS_fname(stname, stname, stname) # define IMPLEMENT_ASN1_ALLOC_FUNCTIONS_pfname(pre, stname, itname, fname) \ pre stname fname##_new(void) \ { \ return (stname )ASN1_item_new(ASN1_ITEM_rptr(itname)); \ } \ pre void fname##_free(stname a) \ { \ ASN1_item_free((ASN1_VALUE )a, ASN1_ITEM_rptr(itname)); \ } # define IMPLEMENT_ASN1_ALLOC_FUNCTIONS_fname(stname, itname, fname) \ stname fname##_new(void) \ { \ return (stname )ASN1_item_new(ASN1_ITEM_rptr(itname)); \ } \ void fname##_free(stname a) \ { \ ASN1_item_free((ASN1_VALUE )a, ASN1_ITEM_rptr(itname)); \ } # define IMPLEMENT_ASN1_FUNCTIONS_fname(stname, itname, fname) \ IMPLEMENT_ASN1_ENCODE_FUNCTIONS_fname(stname, itname, fname) \ IMPLEMENT_ASN1_ALLOC_FUNCTIONS_fname(stname, itname, fname) # define IMPLEMENT_ASN1_ENCODE_FUNCTIONS_fname(stname, itname, fname) \ stname d2i_##fname(stname a, const unsigned char in, long len) \ { \ return (stname )ASN1_item_d2i((ASN1_VALUE )a, in, len, ASN1_ITEM_rptr(itname));\ } \ int i2d_##fname(stname a, unsigned char *out) \ { \ return ASN1_item_i2d((ASN1_VALUE )a, out, ASN1_ITEM_rptr(itname));\ } # define IMPLEMENT_ASN1_NDEF_FUNCTION(stname) \ int i2d_##stname##_NDEF(stname a, unsigned char out) \ { \ return ASN1_item_ndef_i2d((ASN1_VALUE )a, out, ASN1_ITEM_rptr(stname));\ } /* * This includes evil casts to remove const: they will go away when full ASN1 * constification is done. / # define IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(stname, itname, fname) \ stname d2i_##fname(stname a, const unsigned char in, long len) \ { \ return (stname )ASN1_item_d2i((ASN1_VALUE )a, in, len, ASN1_ITEM_rptr(itname));\ } \ int i2d_##fname(const stname a, unsigned char *out) \ { \ return ASN1_item_i2d((ASN1_VALUE )a, out, ASN1_ITEM_rptr(itname));\ } # define IMPLEMENT_ASN1_DUP_FUNCTION(stname) \ stname * stname##_dup(stname x) \ { \ return ASN1_item_dup(ASN1_ITEM_rptr(stname), x); \ } # define IMPLEMENT_ASN1_PRINT_FUNCTION(stname) \ IMPLEMENT_ASN1_PRINT_FUNCTION_fname(stname, stname, stname) # define IMPLEMENT_ASN1_PRINT_FUNCTION_fname(stname, itname, fname) \ int fname##_print_ctx(BIO out, stname x, int indent, \ const ASN1_PCTX pctx) \ { \ return ASN1_item_print(out, (ASN1_VALUE )x, indent, \ ASN1_ITEM_rptr(itname), pctx); \ } # define IMPLEMENT_ASN1_FUNCTIONS_const(name) \ IMPLEMENT_ASN1_FUNCTIONS_const_fname(name, name, name) # define IMPLEMENT_ASN1_FUNCTIONS_const_fname(stname, itname, fname) \ IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(stname, itname, fname) \ IMPLEMENT_ASN1_ALLOC_FUNCTIONS_fname(stname, itname, fname) / external definitions for primitive types / DECLARE_ASN1_ITEM(ASN1_BOOLEAN) DECLARE_ASN1_ITEM(ASN1_TBOOLEAN) DECLARE_ASN1_ITEM(ASN1_FBOOLEAN) DECLARE_ASN1_ITEM(ASN1_SEQUENCE) DECLARE_ASN1_ITEM(CBIGNUM) DECLARE_ASN1_ITEM(BIGNUM) DECLARE_ASN1_ITEM(LONG) DECLARE_ASN1_ITEM(ZLONG) DECLARE_STACK_OF(ASN1_VALUE) / Functions used internally by the ASN1 code / int ASN1_item_ex_new(ASN1_VALUE pval, const ASN1_ITEM it); void ASN1_item_ex_free(ASN1_VALUE *pval, const ASN1_ITEM it); int ASN1_template_new(ASN1_VALUE *pval, const ASN1_TEMPLATE tt); int ASN1_primitive_new(ASN1_VALUE *pval, const ASN1_ITEM it); void ASN1_template_free(ASN1_VALUE *pval, const ASN1_TEMPLATE tt); int ASN1_template_d2i(ASN1_VALUE pval, const unsigned char in, long len, const ASN1_TEMPLATE tt); int ASN1_item_ex_d2i(ASN1_VALUE pval, const unsigned char in, long len, const ASN1_ITEM it, int tag, int aclass, char opt, ASN1_TLC ctx); int ASN1_item_ex_i2d(ASN1_VALUE pval, unsigned char out, const ASN1_ITEM it, int tag, int aclass); int ASN1_template_i2d(ASN1_VALUE pval, unsigned char out, const ASN1_TEMPLATE tt); void ASN1_primitive_free(ASN1_VALUE pval, const ASN1_ITEM it); int asn1_ex_i2c(ASN1_VALUE *pval, unsigned char cont, int putype, const ASN1_ITEM it); int asn1_ex_c2i(ASN1_VALUE *pval, const unsigned char cont, int len, int utype, char free_cont, const ASN1_ITEM it); int asn1_get_choice_selector(ASN1_VALUE *pval, const ASN1_ITEM it); int asn1_set_choice_selector(ASN1_VALUE *pval, int value, const ASN1_ITEM it); ASN1_VALUE asn1_get_field_ptr(ASN1_VALUE pval, const ASN1_TEMPLATE tt); const ASN1_TEMPLATE asn1_do_adb(ASN1_VALUE *pval, const ASN1_TEMPLATE tt, int nullerr); int asn1_do_lock(ASN1_VALUE *pval, int op, const ASN1_ITEM it); void asn1_enc_init(ASN1_VALUE *pval, const ASN1_ITEM it); void asn1_enc_free(ASN1_VALUE *pval, const ASN1_ITEM it); int asn1_enc_restore(int len, unsigned char out, ASN1_VALUE pval, const ASN1_ITEM it); int asn1_enc_save(ASN1_VALUE *pval, const unsigned char in, int inlen, const ASN1_ITEM *it); #ifdef __cplusplus } #endif #endif Back

Edit File : asn1t.h | Size : 33.67 KB

/* asn1t.h */
/*
 * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
 * 2000.
 */
/* ====================================================================
 * Copyright (c) 2000-2005 The OpenSSL Project.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. All advertising materials mentioning features or use of this
 *    software must display the following acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
 *
 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
 *    endorse or promote products derived from this software without
 *    prior written permission. For written permission, please contact
 *    licensing@OpenSSL.org.
 *
 * 5. Products derived from this software may not be called "OpenSSL"
 *    nor may "OpenSSL" appear in their names without prior written
 *    permission of the OpenSSL Project.
 *
 * 6. Redistributions of any form whatsoever must retain the following
 *    acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
 *
 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 * ====================================================================
 *
 * This product includes cryptographic software written by Eric Young
 * (eay@cryptsoft.com).  This product includes software written by Tim
 * Hudson (tjh@cryptsoft.com).
 *
 */
#ifndef HEADER_ASN1T_H
# define HEADER_ASN1T_H

# include <stddef.h>
# include <openssl/e_os2.h>
# include <openssl/asn1.h>

# ifdef OPENSSL_BUILD_SHLIBCRYPTO
#  undef OPENSSL_EXTERN
#  define OPENSSL_EXTERN OPENSSL_EXPORT
# endif

/* ASN1 template defines, structures and functions */

#ifdef  __cplusplus
extern "C" {
#endif

# ifndef OPENSSL_EXPORT_VAR_AS_FUNCTION

/* Macro to obtain ASN1_ADB pointer from a type (only used internally) */
#  define ASN1_ADB_ptr(iptr) ((const ASN1_ADB *)(iptr))

/* Macros for start and end of ASN1_ITEM definition */

#  define ASN1_ITEM_start(itname) \
        OPENSSL_GLOBAL const ASN1_ITEM itname##_it = {

#  define ASN1_ITEM_end(itname) \
                };

# else

/* Macro to obtain ASN1_ADB pointer from a type (only used internally) */
#  define ASN1_ADB_ptr(iptr) ((const ASN1_ADB *)(iptr()))

/* Macros for start and end of ASN1_ITEM definition */

#  define ASN1_ITEM_start(itname) \
        const ASN1_ITEM * itname##_it(void) \
        { \
                static const ASN1_ITEM local_it = {

#  define ASN1_ITEM_end(itname) \
                }; \
        return &local_it; \
        }

# endif

/* Macros to aid ASN1 template writing */

# define ASN1_ITEM_TEMPLATE(tname) \
        static const ASN1_TEMPLATE tname##_item_tt

# define ASN1_ITEM_TEMPLATE_END(tname) \
        ;\
        ASN1_ITEM_start(tname) \
                ASN1_ITYPE_PRIMITIVE,\
                -1,\
                &tname##_item_tt,\
                0,\
                NULL,\
                0,\
                #tname \
        ASN1_ITEM_end(tname)

/* This is a ASN1 type which just embeds a template */

/*-
 * This pair helps declare a SEQUENCE. We can do:
 *
 *      ASN1_SEQUENCE(stname) = {
 *              ... SEQUENCE components ...
 *      } ASN1_SEQUENCE_END(stname)
 *
 *      This will produce an ASN1_ITEM called stname_it
 *      for a structure called stname.
 *
 *      If you want the same structure but a different
 *      name then use:
 *
 *      ASN1_SEQUENCE(itname) = {
 *              ... SEQUENCE components ...
 *      } ASN1_SEQUENCE_END_name(stname, itname)
 *
 *      This will create an item called itname_it using
 *      a structure called stname.
 */

# define ASN1_SEQUENCE(tname) \
        static const ASN1_TEMPLATE tname##_seq_tt[]

# define ASN1_SEQUENCE_END(stname) ASN1_SEQUENCE_END_name(stname, stname)

# define ASN1_SEQUENCE_END_name(stname, tname) \
        ;\
        ASN1_ITEM_start(tname) \
                ASN1_ITYPE_SEQUENCE,\
                V_ASN1_SEQUENCE,\
                tname##_seq_tt,\
                sizeof(tname##_seq_tt) / sizeof(ASN1_TEMPLATE),\
                NULL,\
                sizeof(stname),\
                #stname \
        ASN1_ITEM_end(tname)

# define ASN1_NDEF_SEQUENCE(tname) \
        ASN1_SEQUENCE(tname)

# define ASN1_NDEF_SEQUENCE_cb(tname, cb) \
        ASN1_SEQUENCE_cb(tname, cb)

# define ASN1_SEQUENCE_cb(tname, cb) \
        static const ASN1_AUX tname##_aux = {NULL, 0, 0, 0, cb, 0}; \
        ASN1_SEQUENCE(tname)

# define ASN1_BROKEN_SEQUENCE(tname) \
        static const ASN1_AUX tname##_aux = {NULL, ASN1_AFLG_BROKEN, 0, 0, 0, 0}; \
        ASN1_SEQUENCE(tname)

# define ASN1_SEQUENCE_ref(tname, cb, lck) \
        static const ASN1_AUX tname##_aux = {NULL, ASN1_AFLG_REFCOUNT, offsetof(tname, references), lck, cb, 0}; \
        ASN1_SEQUENCE(tname)

# define ASN1_SEQUENCE_enc(tname, enc, cb) \
        static const ASN1_AUX tname##_aux = {NULL, ASN1_AFLG_ENCODING, 0, 0, cb, offsetof(tname, enc)}; \
        ASN1_SEQUENCE(tname)

# define ASN1_NDEF_SEQUENCE_END(tname) \
        ;\
        ASN1_ITEM_start(tname) \
                ASN1_ITYPE_NDEF_SEQUENCE,\
                V_ASN1_SEQUENCE,\
                tname##_seq_tt,\
                sizeof(tname##_seq_tt) / sizeof(ASN1_TEMPLATE),\
                NULL,\
                sizeof(tname),\
                #tname \
        ASN1_ITEM_end(tname)

# define ASN1_BROKEN_SEQUENCE_END(stname) ASN1_SEQUENCE_END_ref(stname, stname)

# define ASN1_SEQUENCE_END_enc(stname, tname) ASN1_SEQUENCE_END_ref(stname, tname)

# define ASN1_SEQUENCE_END_cb(stname, tname) ASN1_SEQUENCE_END_ref(stname, tname)

# define ASN1_SEQUENCE_END_ref(stname, tname) \
        ;\
        ASN1_ITEM_start(tname) \
                ASN1_ITYPE_SEQUENCE,\
                V_ASN1_SEQUENCE,\
                tname##_seq_tt,\
                sizeof(tname##_seq_tt) / sizeof(ASN1_TEMPLATE),\
                &tname##_aux,\
                sizeof(stname),\
                #stname \
        ASN1_ITEM_end(tname)

# define ASN1_NDEF_SEQUENCE_END_cb(stname, tname) \
        ;\
        ASN1_ITEM_start(tname) \
                ASN1_ITYPE_NDEF_SEQUENCE,\
                V_ASN1_SEQUENCE,\
                tname##_seq_tt,\
                sizeof(tname##_seq_tt) / sizeof(ASN1_TEMPLATE),\
                &tname##_aux,\
                sizeof(stname),\
                #stname \
        ASN1_ITEM_end(tname)

/*-
 * This pair helps declare a CHOICE type. We can do:
 *
 *      ASN1_CHOICE(chname) = {
 *              ... CHOICE options ...
 *      ASN1_CHOICE_END(chname)
 *
 *      This will produce an ASN1_ITEM called chname_it
 *      for a structure called chname. The structure
 *      definition must look like this:
 *      typedef struct {
 *              int type;
 *              union {
 *                      ASN1_SOMETHING *opt1;
 *                      ASN1_SOMEOTHER *opt2;
 *              } value;
 *      } chname;
 *
 *      the name of the selector must be 'type'.
 *      to use an alternative selector name use the
 *      ASN1_CHOICE_END_selector() version.
 */

# define ASN1_CHOICE(tname) \
        static const ASN1_TEMPLATE tname##_ch_tt[]

# define ASN1_CHOICE_cb(tname, cb) \
        static const ASN1_AUX tname##_aux = {NULL, 0, 0, 0, cb, 0}; \
        ASN1_CHOICE(tname)

# define ASN1_CHOICE_END(stname) ASN1_CHOICE_END_name(stname, stname)

# define ASN1_CHOICE_END_name(stname, tname) ASN1_CHOICE_END_selector(stname, tname, type)

# define ASN1_CHOICE_END_selector(stname, tname, selname) \
        ;\
        ASN1_ITEM_start(tname) \
                ASN1_ITYPE_CHOICE,\
                offsetof(stname,selname) ,\
                tname##_ch_tt,\
                sizeof(tname##_ch_tt) / sizeof(ASN1_TEMPLATE),\
                NULL,\
                sizeof(stname),\
                #stname \
        ASN1_ITEM_end(tname)

# define ASN1_CHOICE_END_cb(stname, tname, selname) \
        ;\
        ASN1_ITEM_start(tname) \
                ASN1_ITYPE_CHOICE,\
                offsetof(stname,selname) ,\
                tname##_ch_tt,\
                sizeof(tname##_ch_tt) / sizeof(ASN1_TEMPLATE),\
                &tname##_aux,\
                sizeof(stname),\
                #stname \
        ASN1_ITEM_end(tname)

/* This helps with the template wrapper form of ASN1_ITEM */

# define ASN1_EX_TEMPLATE_TYPE(flags, tag, name, type) { \
        (flags), (tag), 0,\
        #name, ASN1_ITEM_ref(type) }

/* These help with SEQUENCE or CHOICE components */

/* used to declare other types */

# define ASN1_EX_TYPE(flags, tag, stname, field, type) { \
        (flags), (tag), offsetof(stname, field),\
        #field, ASN1_ITEM_ref(type) }

/* used when the structure is combined with the parent */

# define ASN1_EX_COMBINE(flags, tag, type) { \
        (flags)|ASN1_TFLG_COMBINE, (tag), 0, NULL, ASN1_ITEM_ref(type) }

/* implicit and explicit helper macros */

# define ASN1_IMP_EX(stname, field, type, tag, ex) \
                ASN1_EX_TYPE(ASN1_TFLG_IMPLICIT | ex, tag, stname, field, type)

# define ASN1_EXP_EX(stname, field, type, tag, ex) \
                ASN1_EX_TYPE(ASN1_TFLG_EXPLICIT | ex, tag, stname, field, type)

/* Any defined by macros: the field used is in the table itself */

# ifndef OPENSSL_EXPORT_VAR_AS_FUNCTION
#  define ASN1_ADB_OBJECT(tblname) { ASN1_TFLG_ADB_OID, -1, 0, #tblname, (const ASN1_ITEM *)&(tblname##_adb) }
#  define ASN1_ADB_INTEGER(tblname) { ASN1_TFLG_ADB_INT, -1, 0, #tblname, (const ASN1_ITEM *)&(tblname##_adb) }
# else
#  define ASN1_ADB_OBJECT(tblname) { ASN1_TFLG_ADB_OID, -1, 0, #tblname, tblname##_adb }
#  define ASN1_ADB_INTEGER(tblname) { ASN1_TFLG_ADB_INT, -1, 0, #tblname, tblname##_adb }
# endif
/* Plain simple type */
# define ASN1_SIMPLE(stname, field, type) ASN1_EX_TYPE(0,0, stname, field, type)

/* OPTIONAL simple type */
# define ASN1_OPT(stname, field, type) ASN1_EX_TYPE(ASN1_TFLG_OPTIONAL, 0, stname, field, type)

/* IMPLICIT tagged simple type */
# define ASN1_IMP(stname, field, type, tag) ASN1_IMP_EX(stname, field, type, tag, 0)

/* IMPLICIT tagged OPTIONAL simple type */
# define ASN1_IMP_OPT(stname, field, type, tag) ASN1_IMP_EX(stname, field, type, tag, ASN1_TFLG_OPTIONAL)

/* Same as above but EXPLICIT */

# define ASN1_EXP(stname, field, type, tag) ASN1_EXP_EX(stname, field, type, tag, 0)
# define ASN1_EXP_OPT(stname, field, type, tag) ASN1_EXP_EX(stname, field, type, tag, ASN1_TFLG_OPTIONAL)

/* SEQUENCE OF type */
# define ASN1_SEQUENCE_OF(stname, field, type) \
                ASN1_EX_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, stname, field, type)

/* OPTIONAL SEQUENCE OF */
# define ASN1_SEQUENCE_OF_OPT(stname, field, type) \
                ASN1_EX_TYPE(ASN1_TFLG_SEQUENCE_OF|ASN1_TFLG_OPTIONAL, 0, stname, field, type)

/* Same as above but for SET OF */

# define ASN1_SET_OF(stname, field, type) \
                ASN1_EX_TYPE(ASN1_TFLG_SET_OF, 0, stname, field, type)

# define ASN1_SET_OF_OPT(stname, field, type) \
                ASN1_EX_TYPE(ASN1_TFLG_SET_OF|ASN1_TFLG_OPTIONAL, 0, stname, field, type)

/* Finally compound types of SEQUENCE, SET, IMPLICIT, EXPLICIT and OPTIONAL */

# define ASN1_IMP_SET_OF(stname, field, type, tag) \
                        ASN1_IMP_EX(stname, field, type, tag, ASN1_TFLG_SET_OF)

# define ASN1_EXP_SET_OF(stname, field, type, tag) \
                        ASN1_EXP_EX(stname, field, type, tag, ASN1_TFLG_SET_OF)

# define ASN1_IMP_SET_OF_OPT(stname, field, type, tag) \
                        ASN1_IMP_EX(stname, field, type, tag, ASN1_TFLG_SET_OF|ASN1_TFLG_OPTIONAL)

# define ASN1_EXP_SET_OF_OPT(stname, field, type, tag) \
                        ASN1_EXP_EX(stname, field, type, tag, ASN1_TFLG_SET_OF|ASN1_TFLG_OPTIONAL)

# define ASN1_IMP_SEQUENCE_OF(stname, field, type, tag) \
                        ASN1_IMP_EX(stname, field, type, tag, ASN1_TFLG_SEQUENCE_OF)

# define ASN1_IMP_SEQUENCE_OF_OPT(stname, field, type, tag) \
                        ASN1_IMP_EX(stname, field, type, tag, ASN1_TFLG_SEQUENCE_OF|ASN1_TFLG_OPTIONAL)

# define ASN1_EXP_SEQUENCE_OF(stname, field, type, tag) \
                        ASN1_EXP_EX(stname, field, type, tag, ASN1_TFLG_SEQUENCE_OF)

# define ASN1_EXP_SEQUENCE_OF_OPT(stname, field, type, tag) \
                        ASN1_EXP_EX(stname, field, type, tag, ASN1_TFLG_SEQUENCE_OF|ASN1_TFLG_OPTIONAL)

/* EXPLICIT using indefinite length constructed form */
# define ASN1_NDEF_EXP(stname, field, type, tag) \
                        ASN1_EXP_EX(stname, field, type, tag, ASN1_TFLG_NDEF)

/* EXPLICIT OPTIONAL using indefinite length constructed form */
# define ASN1_NDEF_EXP_OPT(stname, field, type, tag) \
                        ASN1_EXP_EX(stname, field, type, tag, ASN1_TFLG_OPTIONAL|ASN1_TFLG_NDEF)

/* Macros for the ASN1_ADB structure */

# define ASN1_ADB(name) \
        static const ASN1_ADB_TABLE name##_adbtbl[]

# ifndef OPENSSL_EXPORT_VAR_AS_FUNCTION

#  define ASN1_ADB_END(name, flags, field, app_table, def, none) \
        ;\
        static const ASN1_ADB name##_adb = {\
                flags,\
                offsetof(name, field),\
                app_table,\
                name##_adbtbl,\
                sizeof(name##_adbtbl) / sizeof(ASN1_ADB_TABLE),\
                def,\
                none\
        }

# else

#  define ASN1_ADB_END(name, flags, field, app_table, def, none) \
        ;\
        static const ASN1_ITEM *name##_adb(void) \
        { \
        static const ASN1_ADB internal_adb = \
                {\
                flags,\
                offsetof(name, field),\
                app_table,\
                name##_adbtbl,\
                sizeof(name##_adbtbl) / sizeof(ASN1_ADB_TABLE),\
                def,\
                none\
                }; \
                return (const ASN1_ITEM *) &internal_adb; \
        } \
        void dummy_function(void)

# endif

# define ADB_ENTRY(val, template) {val, template}

# define ASN1_ADB_TEMPLATE(name) \
        static const ASN1_TEMPLATE name##_tt

/*
 * This is the ASN1 template structure that defines a wrapper round the
 * actual type. It determines the actual position of the field in the value
 * structure, various flags such as OPTIONAL and the field name.
 */

struct ASN1_TEMPLATE_st {
    unsigned long flags;        /* Various flags */
    long tag;                   /* tag, not used if no tagging */
    unsigned long offset;       /* Offset of this field in structure */
# ifndef NO_ASN1_FIELD_NAMES
    const char *field_name;     /* Field name */
# endif
    ASN1_ITEM_EXP *item;        /* Relevant ASN1_ITEM or ASN1_ADB */
};

/* Macro to extract ASN1_ITEM and ASN1_ADB pointer from ASN1_TEMPLATE */

# define ASN1_TEMPLATE_item(t) (t->item_ptr)
# define ASN1_TEMPLATE_adb(t) (t->item_ptr)

typedef struct ASN1_ADB_TABLE_st ASN1_ADB_TABLE;
typedef struct ASN1_ADB_st ASN1_ADB;

struct ASN1_ADB_st {
    unsigned long flags;        /* Various flags */
    unsigned long offset;       /* Offset of selector field */
    STACK_OF(ASN1_ADB_TABLE) **app_items; /* Application defined items */
    const ASN1_ADB_TABLE *tbl;  /* Table of possible types */
    long tblcount;              /* Number of entries in tbl */
    const ASN1_TEMPLATE *default_tt; /* Type to use if no match */
    const ASN1_TEMPLATE *null_tt; /* Type to use if selector is NULL */
};

struct ASN1_ADB_TABLE_st {
    long value;                 /* NID for an object or value for an int */
    const ASN1_TEMPLATE tt;     /* item for this value */
};

/* template flags */

/* Field is optional */
# define ASN1_TFLG_OPTIONAL      (0x1)

/* Field is a SET OF */
# define ASN1_TFLG_SET_OF        (0x1 << 1)

/* Field is a SEQUENCE OF */
# define ASN1_TFLG_SEQUENCE_OF   (0x2 << 1)

/*
 * Special case: this refers to a SET OF that will be sorted into DER order
 * when encoded *and* the corresponding STACK will be modified to match the
 * new order.
 */
# define ASN1_TFLG_SET_ORDER     (0x3 << 1)

/* Mask for SET OF or SEQUENCE OF */
# define ASN1_TFLG_SK_MASK       (0x3 << 1)

/*
 * These flags mean the tag should be taken from the tag field. If EXPLICIT
 * then the underlying type is used for the inner tag.
 */

/* IMPLICIT tagging */
# define ASN1_TFLG_IMPTAG        (0x1 << 3)

/* EXPLICIT tagging, inner tag from underlying type */
# define ASN1_TFLG_EXPTAG        (0x2 << 3)

# define ASN1_TFLG_TAG_MASK      (0x3 << 3)

/* context specific IMPLICIT */
# define ASN1_TFLG_IMPLICIT      ASN1_TFLG_IMPTAG|ASN1_TFLG_CONTEXT

/* context specific EXPLICIT */
# define ASN1_TFLG_EXPLICIT      ASN1_TFLG_EXPTAG|ASN1_TFLG_CONTEXT

/*
 * If tagging is in force these determine the type of tag to use. Otherwise
 * the tag is determined by the underlying type. These values reflect the
 * actual octet format.
 */

/* Universal tag */
# define ASN1_TFLG_UNIVERSAL     (0x0<<6)
/* Application tag */
# define ASN1_TFLG_APPLICATION   (0x1<<6)
/* Context specific tag */
# define ASN1_TFLG_CONTEXT       (0x2<<6)
/* Private tag */
# define ASN1_TFLG_PRIVATE       (0x3<<6)

# define ASN1_TFLG_TAG_CLASS     (0x3<<6)

/*
 * These are for ANY DEFINED BY type. In this case the 'item' field points to
 * an ASN1_ADB structure which contains a table of values to decode the
 * relevant type
 */

# define ASN1_TFLG_ADB_MASK      (0x3<<8)

# define ASN1_TFLG_ADB_OID       (0x1<<8)

# define ASN1_TFLG_ADB_INT       (0x1<<9)

/*
 * This flag means a parent structure is passed instead of the field: this is
 * useful is a SEQUENCE is being combined with a CHOICE for example. Since
 * this means the structure and item name will differ we need to use the
 * ASN1_CHOICE_END_name() macro for example.
 */

# define ASN1_TFLG_COMBINE       (0x1<<10)

/*
 * This flag when present in a SEQUENCE OF, SET OF or EXPLICIT causes
 * indefinite length constructed encoding to be used if required.
 */

# define ASN1_TFLG_NDEF          (0x1<<11)

/* This is the actual ASN1 item itself */

struct ASN1_ITEM_st {
    char itype;                 /* The item type, primitive, SEQUENCE, CHOICE
                                 * or extern */
    long utype;                 /* underlying type */
    const ASN1_TEMPLATE *templates; /* If SEQUENCE or CHOICE this contains
                                     * the contents */
    long tcount;                /* Number of templates if SEQUENCE or CHOICE */
    const void *funcs;          /* functions that handle this type */
    long size;                  /* Structure size (usually) */
# ifndef NO_ASN1_FIELD_NAMES
    const char *sname;          /* Structure name */
# endif
};

/*-
 * These are values for the itype field and
 * determine how the type is interpreted.
 *
 * For PRIMITIVE types the underlying type
 * determines the behaviour if items is NULL.
 *
 * Otherwise templates must contain a single
 * template and the type is treated in the
 * same way as the type specified in the template.
 *
 * For SEQUENCE types the templates field points
 * to the members, the size field is the
 * structure size.
 *
 * For CHOICE types the templates field points
 * to each possible member (typically a union)
 * and the 'size' field is the offset of the
 * selector.
 *
 * The 'funcs' field is used for application
 * specific functions.
 *
 * For COMPAT types the funcs field gives a
 * set of functions that handle this type, this
 * supports the old d2i, i2d convention.
 *
 * The EXTERN type uses a new style d2i/i2d.
 * The new style should be used where possible
 * because it avoids things like the d2i IMPLICIT
 * hack.
 *
 * MSTRING is a multiple string type, it is used
 * for a CHOICE of character strings where the
 * actual strings all occupy an ASN1_STRING
 * structure. In this case the 'utype' field
 * has a special meaning, it is used as a mask
 * of acceptable types using the B_ASN1 constants.
 *
 * NDEF_SEQUENCE is the same as SEQUENCE except
 * that it will use indefinite length constructed
 * encoding if requested.
 *
 */

# define ASN1_ITYPE_PRIMITIVE            0x0

# define ASN1_ITYPE_SEQUENCE             0x1

# define ASN1_ITYPE_CHOICE               0x2

# define ASN1_ITYPE_COMPAT               0x3

# define ASN1_ITYPE_EXTERN               0x4

# define ASN1_ITYPE_MSTRING              0x5

# define ASN1_ITYPE_NDEF_SEQUENCE        0x6

/*
 * Cache for ASN1 tag and length, so we don't keep re-reading it for things
 * like CHOICE
 */

struct ASN1_TLC_st {
    char valid;                 /* Values below are valid */
    int ret;                    /* return value */
    long plen;                  /* length */
    int ptag;                   /* class value */
    int pclass;                 /* class value */
    int hdrlen;                 /* header length */
};

/* Typedefs for ASN1 function pointers */

typedef ASN1_VALUE *ASN1_new_func(void);
typedef void ASN1_free_func(ASN1_VALUE *a);
typedef ASN1_VALUE *ASN1_d2i_func(ASN1_VALUE **a, const unsigned char **in,
                                  long length);
typedef int ASN1_i2d_func(ASN1_VALUE *a, unsigned char **in);

typedef int ASN1_ex_d2i(ASN1_VALUE **pval, const unsigned char **in, long len,
                        const ASN1_ITEM *it, int tag, int aclass, char opt,
                        ASN1_TLC *ctx);

typedef int ASN1_ex_i2d(ASN1_VALUE **pval, unsigned char **out,
                        const ASN1_ITEM *it, int tag, int aclass);
typedef int ASN1_ex_new_func(ASN1_VALUE **pval, const ASN1_ITEM *it);
typedef void ASN1_ex_free_func(ASN1_VALUE **pval, const ASN1_ITEM *it);

typedef int ASN1_ex_print_func(BIO *out, ASN1_VALUE **pval,
                               int indent, const char *fname,
                               const ASN1_PCTX *pctx);

typedef int ASN1_primitive_i2c(ASN1_VALUE **pval, unsigned char *cont,
                               int *putype, const ASN1_ITEM *it);
typedef int ASN1_primitive_c2i(ASN1_VALUE **pval, const unsigned char *cont,
                               int len, int utype, char *free_cont,
                               const ASN1_ITEM *it);
typedef int ASN1_primitive_print(BIO *out, ASN1_VALUE **pval,
                                 const ASN1_ITEM *it, int indent,
                                 const ASN1_PCTX *pctx);

typedef struct ASN1_COMPAT_FUNCS_st {
    ASN1_new_func *asn1_new;
    ASN1_free_func *asn1_free;
    ASN1_d2i_func *asn1_d2i;
    ASN1_i2d_func *asn1_i2d;
} ASN1_COMPAT_FUNCS;

typedef struct ASN1_EXTERN_FUNCS_st {
    void *app_data;
    ASN1_ex_new_func *asn1_ex_new;
    ASN1_ex_free_func *asn1_ex_free;
    ASN1_ex_free_func *asn1_ex_clear;
    ASN1_ex_d2i *asn1_ex_d2i;
    ASN1_ex_i2d *asn1_ex_i2d;
    ASN1_ex_print_func *asn1_ex_print;
} ASN1_EXTERN_FUNCS;

typedef struct ASN1_PRIMITIVE_FUNCS_st {
    void *app_data;
    unsigned long flags;
    ASN1_ex_new_func *prim_new;
    ASN1_ex_free_func *prim_free;
    ASN1_ex_free_func *prim_clear;
    ASN1_primitive_c2i *prim_c2i;
    ASN1_primitive_i2c *prim_i2c;
    ASN1_primitive_print *prim_print;
} ASN1_PRIMITIVE_FUNCS;

/*
 * This is the ASN1_AUX structure: it handles various miscellaneous
 * requirements. For example the use of reference counts and an informational
 * callback. The "informational callback" is called at various points during
 * the ASN1 encoding and decoding. It can be used to provide minor
 * customisation of the structures used. This is most useful where the
 * supplied routines *almost* do the right thing but need some extra help at
 * a few points. If the callback returns zero then it is assumed a fatal
 * error has occurred and the main operation should be abandoned. If major
 * changes in the default behaviour are required then an external type is
 * more appropriate.
 */

typedef int ASN1_aux_cb(int operation, ASN1_VALUE **in, const ASN1_ITEM *it,
                        void *exarg);

typedef struct ASN1_AUX_st {
    void *app_data;
    int flags;
    int ref_offset;             /* Offset of reference value */
    int ref_lock;               /* Lock type to use */
    ASN1_aux_cb *asn1_cb;
    int enc_offset;             /* Offset of ASN1_ENCODING structure */
} ASN1_AUX;

/* For print related callbacks exarg points to this structure */
typedef struct ASN1_PRINT_ARG_st {
    BIO *out;
    int indent;
    const ASN1_PCTX *pctx;
} ASN1_PRINT_ARG;

/* For streaming related callbacks exarg points to this structure */
typedef struct ASN1_STREAM_ARG_st {
    /* BIO to stream through */
    BIO *out;
    /* BIO with filters appended */
    BIO *ndef_bio;
    /* Streaming I/O boundary */
    unsigned char **boundary;
} ASN1_STREAM_ARG;

/* Flags in ASN1_AUX */

/* Use a reference count */
# define ASN1_AFLG_REFCOUNT      1
/* Save the encoding of structure (useful for signatures) */
# define ASN1_AFLG_ENCODING      2
/* The Sequence length is invalid */
# define ASN1_AFLG_BROKEN        4

/* operation values for asn1_cb */

# define ASN1_OP_NEW_PRE         0
# define ASN1_OP_NEW_POST        1
# define ASN1_OP_FREE_PRE        2
# define ASN1_OP_FREE_POST       3
# define ASN1_OP_D2I_PRE         4
# define ASN1_OP_D2I_POST        5
# define ASN1_OP_I2D_PRE         6
# define ASN1_OP_I2D_POST        7
# define ASN1_OP_PRINT_PRE       8
# define ASN1_OP_PRINT_POST      9
# define ASN1_OP_STREAM_PRE      10
# define ASN1_OP_STREAM_POST     11
# define ASN1_OP_DETACHED_PRE    12
# define ASN1_OP_DETACHED_POST   13

/* Macro to implement a primitive type */
# define IMPLEMENT_ASN1_TYPE(stname) IMPLEMENT_ASN1_TYPE_ex(stname, stname, 0)
# define IMPLEMENT_ASN1_TYPE_ex(itname, vname, ex) \
                                ASN1_ITEM_start(itname) \
                                        ASN1_ITYPE_PRIMITIVE, V_##vname, NULL, 0, NULL, ex, #itname \
                                ASN1_ITEM_end(itname)

/* Macro to implement a multi string type */
# define IMPLEMENT_ASN1_MSTRING(itname, mask) \
                                ASN1_ITEM_start(itname) \
                                        ASN1_ITYPE_MSTRING, mask, NULL, 0, NULL, sizeof(ASN1_STRING), #itname \
                                ASN1_ITEM_end(itname)

/* Macro to implement an ASN1_ITEM in terms of old style funcs */

# define IMPLEMENT_COMPAT_ASN1(sname) IMPLEMENT_COMPAT_ASN1_type(sname, V_ASN1_SEQUENCE)

# define IMPLEMENT_COMPAT_ASN1_type(sname, tag) \
        static const ASN1_COMPAT_FUNCS sname##_ff = { \
                (ASN1_new_func *)sname##_new, \
                (ASN1_free_func *)sname##_free, \
                (ASN1_d2i_func *)d2i_##sname, \
                (ASN1_i2d_func *)i2d_##sname, \
        }; \
        ASN1_ITEM_start(sname) \
                ASN1_ITYPE_COMPAT, \
                tag, \
                NULL, \
                0, \
                &sname##_ff, \
                0, \
                #sname \
        ASN1_ITEM_end(sname)

# define IMPLEMENT_EXTERN_ASN1(sname, tag, fptrs) \
        ASN1_ITEM_start(sname) \
                ASN1_ITYPE_EXTERN, \
                tag, \
                NULL, \
                0, \
                &fptrs, \
                0, \
                #sname \
        ASN1_ITEM_end(sname)

/* Macro to implement standard functions in terms of ASN1_ITEM structures */

# define IMPLEMENT_ASN1_FUNCTIONS(stname) IMPLEMENT_ASN1_FUNCTIONS_fname(stname, stname, stname)

# define IMPLEMENT_ASN1_FUNCTIONS_name(stname, itname) IMPLEMENT_ASN1_FUNCTIONS_fname(stname, itname, itname)

# define IMPLEMENT_ASN1_FUNCTIONS_ENCODE_name(stname, itname) \
                        IMPLEMENT_ASN1_FUNCTIONS_ENCODE_fname(stname, itname, itname)

# define IMPLEMENT_STATIC_ASN1_ALLOC_FUNCTIONS(stname) \
                IMPLEMENT_ASN1_ALLOC_FUNCTIONS_pfname(static, stname, stname, stname)

# define IMPLEMENT_ASN1_ALLOC_FUNCTIONS(stname) \
                IMPLEMENT_ASN1_ALLOC_FUNCTIONS_fname(stname, stname, stname)

# define IMPLEMENT_ASN1_ALLOC_FUNCTIONS_pfname(pre, stname, itname, fname) \
        pre stname *fname##_new(void) \
        { \
                return (stname *)ASN1_item_new(ASN1_ITEM_rptr(itname)); \
        } \
        pre void fname##_free(stname *a) \
        { \
                ASN1_item_free((ASN1_VALUE *)a, ASN1_ITEM_rptr(itname)); \
        }

# define IMPLEMENT_ASN1_ALLOC_FUNCTIONS_fname(stname, itname, fname) \
        stname *fname##_new(void) \
        { \
                return (stname *)ASN1_item_new(ASN1_ITEM_rptr(itname)); \
        } \
        void fname##_free(stname *a) \
        { \
                ASN1_item_free((ASN1_VALUE *)a, ASN1_ITEM_rptr(itname)); \
        }

# define IMPLEMENT_ASN1_FUNCTIONS_fname(stname, itname, fname) \
        IMPLEMENT_ASN1_ENCODE_FUNCTIONS_fname(stname, itname, fname) \
        IMPLEMENT_ASN1_ALLOC_FUNCTIONS_fname(stname, itname, fname)

# define IMPLEMENT_ASN1_ENCODE_FUNCTIONS_fname(stname, itname, fname) \
        stname *d2i_##fname(stname **a, const unsigned char **in, long len) \
        { \
                return (stname *)ASN1_item_d2i((ASN1_VALUE **)a, in, len, ASN1_ITEM_rptr(itname));\
        } \
        int i2d_##fname(stname *a, unsigned char **out) \
        { \
                return ASN1_item_i2d((ASN1_VALUE *)a, out, ASN1_ITEM_rptr(itname));\
        }

# define IMPLEMENT_ASN1_NDEF_FUNCTION(stname) \
        int i2d_##stname##_NDEF(stname *a, unsigned char **out) \
        { \
                return ASN1_item_ndef_i2d((ASN1_VALUE *)a, out, ASN1_ITEM_rptr(stname));\
        }

/*
 * This includes evil casts to remove const: they will go away when full ASN1
 * constification is done.
 */
# define IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(stname, itname, fname) \
        stname *d2i_##fname(stname **a, const unsigned char **in, long len) \
        { \
                return (stname *)ASN1_item_d2i((ASN1_VALUE **)a, in, len, ASN1_ITEM_rptr(itname));\
        } \
        int i2d_##fname(const stname *a, unsigned char **out) \
        { \
                return ASN1_item_i2d((ASN1_VALUE *)a, out, ASN1_ITEM_rptr(itname));\
        }

# define IMPLEMENT_ASN1_DUP_FUNCTION(stname) \
        stname * stname##_dup(stname *x) \
        { \
        return ASN1_item_dup(ASN1_ITEM_rptr(stname), x); \
        }

# define IMPLEMENT_ASN1_PRINT_FUNCTION(stname) \
        IMPLEMENT_ASN1_PRINT_FUNCTION_fname(stname, stname, stname)

# define IMPLEMENT_ASN1_PRINT_FUNCTION_fname(stname, itname, fname) \
        int fname##_print_ctx(BIO *out, stname *x, int indent, \
                                                const ASN1_PCTX *pctx) \
        { \
                return ASN1_item_print(out, (ASN1_VALUE *)x, indent, \
                        ASN1_ITEM_rptr(itname), pctx); \
        }

# define IMPLEMENT_ASN1_FUNCTIONS_const(name) \
                IMPLEMENT_ASN1_FUNCTIONS_const_fname(name, name, name)

# define IMPLEMENT_ASN1_FUNCTIONS_const_fname(stname, itname, fname) \
        IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(stname, itname, fname) \
        IMPLEMENT_ASN1_ALLOC_FUNCTIONS_fname(stname, itname, fname)

/* external definitions for primitive types */

DECLARE_ASN1_ITEM(ASN1_BOOLEAN)
DECLARE_ASN1_ITEM(ASN1_TBOOLEAN)
DECLARE_ASN1_ITEM(ASN1_FBOOLEAN)
DECLARE_ASN1_ITEM(ASN1_SEQUENCE)
DECLARE_ASN1_ITEM(CBIGNUM)
DECLARE_ASN1_ITEM(BIGNUM)
DECLARE_ASN1_ITEM(LONG)
DECLARE_ASN1_ITEM(ZLONG)

DECLARE_STACK_OF(ASN1_VALUE)

/* Functions used internally by the ASN1 code */

int ASN1_item_ex_new(ASN1_VALUE **pval, const ASN1_ITEM *it);
void ASN1_item_ex_free(ASN1_VALUE **pval, const ASN1_ITEM *it);
int ASN1_template_new(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt);
int ASN1_primitive_new(ASN1_VALUE **pval, const ASN1_ITEM *it);

void ASN1_template_free(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt);
int ASN1_template_d2i(ASN1_VALUE **pval, const unsigned char **in, long len,
                      const ASN1_TEMPLATE *tt);
int ASN1_item_ex_d2i(ASN1_VALUE **pval, const unsigned char **in, long len,
                     const ASN1_ITEM *it, int tag, int aclass, char opt,
                     ASN1_TLC *ctx);

int ASN1_item_ex_i2d(ASN1_VALUE **pval, unsigned char **out,
                     const ASN1_ITEM *it, int tag, int aclass);
int ASN1_template_i2d(ASN1_VALUE **pval, unsigned char **out,
                      const ASN1_TEMPLATE *tt);
void ASN1_primitive_free(ASN1_VALUE **pval, const ASN1_ITEM *it);

int asn1_ex_i2c(ASN1_VALUE **pval, unsigned char *cont, int *putype,
                const ASN1_ITEM *it);
int asn1_ex_c2i(ASN1_VALUE **pval, const unsigned char *cont, int len,
                int utype, char *free_cont, const ASN1_ITEM *it);

int asn1_get_choice_selector(ASN1_VALUE **pval, const ASN1_ITEM *it);
int asn1_set_choice_selector(ASN1_VALUE **pval, int value,
                             const ASN1_ITEM *it);

ASN1_VALUE **asn1_get_field_ptr(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt);

const ASN1_TEMPLATE *asn1_do_adb(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt,
                                 int nullerr);

int asn1_do_lock(ASN1_VALUE **pval, int op, const ASN1_ITEM *it);

void asn1_enc_init(ASN1_VALUE **pval, const ASN1_ITEM *it);
void asn1_enc_free(ASN1_VALUE **pval, const ASN1_ITEM *it);
int asn1_enc_restore(int *len, unsigned char **out, ASN1_VALUE **pval,
                     const ASN1_ITEM *it);
int asn1_enc_save(ASN1_VALUE **pval, const unsigned char *in, int inlen,
                  const ASN1_ITEM *it);

#ifdef  __cplusplus
}
#endif
#endif

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