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Diffstat (limited to 'include/openssl/asn1t.h.in')
| -rw-r--r-- | include/openssl/asn1t.h.in | 923 |
1 files changed, 923 insertions, 0 deletions
diff --git a/include/openssl/asn1t.h.in b/include/openssl/asn1t.h.in new file mode 100644 index 00000000..b536fe51 --- /dev/null +++ b/include/openssl/asn1t.h.in @@ -0,0 +1,923 @@ +/* + * {- join("\n * ", @autowarntext) -} + * + * Copyright 2000-2021 The OpenSSL Project Authors. All Rights Reserved. + * + * Licensed under the Apache License 2.0 (the "License"). You may not use + * this file except in compliance with the License. You can obtain a copy + * in the file LICENSE in the source distribution or at + * https://www.openssl.org/source/license.html + */ + +{- +use OpenSSL::stackhash qw(generate_stack_macros); +-} + +#ifndef OPENSSL_ASN1T_H +# define OPENSSL_ASN1T_H +# pragma once + +# include <openssl/macros.h> +# ifndef OPENSSL_NO_DEPRECATED_3_0 +# define HEADER_ASN1T_H +# endif + +# 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 + +/*- + * These are the possible values for the itype field of the + * ASN1_ITEM structure and determine how it 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 + * data and functions. + * + * 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 +/* unused value 0x3 */ +# define ASN1_ITYPE_EXTERN 0x4 +# define ASN1_ITYPE_MSTRING 0x5 +# define ASN1_ITYPE_NDEF_SEQUENCE 0x6 + +/* 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 static_ASN1_ITEM_start(itname) \ + static ASN1_ITEM_start(itname) + +# define ASN1_ITEM_end(itname) \ + }; \ + return &local_it; \ + } + +/* 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) +# define static_ASN1_ITEM_TEMPLATE_END(tname) \ + ;\ + static_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 static_ASN1_SEQUENCE_END(stname) static_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),\ + #tname \ + ASN1_ITEM_end(tname) + +# define static_ASN1_SEQUENCE_END_name(stname, tname) \ + ;\ + static_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, NULL}; \ + ASN1_SEQUENCE(tname) + +# define ASN1_SEQUENCE_const_cb(tname, const_cb) \ + static const ASN1_AUX tname##_aux = \ + {NULL, ASN1_AFLG_CONST_CB, 0, 0, NULL, 0, const_cb}; \ + ASN1_SEQUENCE(tname) + +# define ASN1_SEQUENCE_cb_const_cb(tname, cb, const_cb) \ + static const ASN1_AUX tname##_aux = \ + {NULL, ASN1_AFLG_CONST_CB, 0, 0, cb, 0, const_cb}; \ + ASN1_SEQUENCE(tname) + +# define ASN1_SEQUENCE_ref(tname, cb) \ + static const ASN1_AUX tname##_aux = {NULL, ASN1_AFLG_REFCOUNT, offsetof(tname, references), offsetof(tname, lock), cb, 0, NULL}; \ + 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), NULL}; \ + 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 static_ASN1_NDEF_SEQUENCE_END(tname) \ + ;\ + static_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_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 static_ASN1_SEQUENCE_END_cb(stname, tname) static_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),\ + #tname \ + ASN1_ITEM_end(tname) +# define static_ASN1_SEQUENCE_END_ref(stname, tname) \ + ;\ + static_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, NULL}; \ + ASN1_CHOICE(tname) + +# define ASN1_CHOICE_END(stname) ASN1_CHOICE_END_name(stname, stname) + +# define static_ASN1_CHOICE_END(stname) static_ASN1_CHOICE_END_name(stname, stname) + +# define ASN1_CHOICE_END_name(stname, tname) ASN1_CHOICE_END_selector(stname, tname, type) + +# define static_ASN1_CHOICE_END_name(stname, tname) static_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 static_ASN1_CHOICE_END_selector(stname, tname, selname) \ + ;\ + static_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) } + +/* 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 */ + +# 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 } + +/* Plain simple type */ +# define ASN1_SIMPLE(stname, field, type) ASN1_EX_TYPE(0,0, stname, field, type) +/* Embedded simple type */ +# define ASN1_EMBED(stname, field, type) ASN1_EX_TYPE(ASN1_TFLG_EMBED,0, stname, field, type) + +/* OPTIONAL simple type */ +# define ASN1_OPT(stname, field, type) ASN1_EX_TYPE(ASN1_TFLG_OPTIONAL, 0, stname, field, type) +# define ASN1_OPT_EMBED(stname, field, type) ASN1_EX_TYPE(ASN1_TFLG_OPTIONAL|ASN1_TFLG_EMBED, 0, stname, field, type) + +/* IMPLICIT tagged simple type */ +# define ASN1_IMP(stname, field, type, tag) ASN1_IMP_EX(stname, field, type, tag, 0) +# define ASN1_IMP_EMBED(stname, field, type, tag) ASN1_IMP_EX(stname, field, type, tag, ASN1_TFLG_EMBED) + +/* IMPLICIT tagged OPTIONAL simple type */ +# define ASN1_IMP_OPT(stname, field, type, tag) ASN1_IMP_EX(stname, field, type, tag, ASN1_TFLG_OPTIONAL) +# define ASN1_IMP_OPT_EMBED(stname, field, type, tag) ASN1_IMP_EX(stname, field, type, tag, ASN1_TFLG_OPTIONAL|ASN1_TFLG_EMBED) + +/* Same as above but EXPLICIT */ + +# define ASN1_EXP(stname, field, type, tag) ASN1_EXP_EX(stname, field, type, tag, 0) +# define ASN1_EXP_EMBED(stname, field, type, tag) ASN1_EXP_EX(stname, field, type, tag, ASN1_TFLG_EMBED) +# define ASN1_EXP_OPT(stname, field, type, tag) ASN1_EXP_EX(stname, field, type, tag, ASN1_TFLG_OPTIONAL) +# define ASN1_EXP_OPT_EMBED(stname, field, type, tag) ASN1_EXP_EX(stname, field, type, tag, ASN1_TFLG_OPTIONAL|ASN1_TFLG_EMBED) + +/* 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[] + +# define ASN1_ADB_END(name, flags, field, adb_cb, def, none) \ + ;\ + static const ASN1_ITEM *name##_adb(void) \ + { \ + static const ASN1_ADB internal_adb = \ + {\ + flags,\ + offsetof(name, field),\ + adb_cb,\ + name##_adbtbl,\ + sizeof(name##_adbtbl) / sizeof(ASN1_ADB_TABLE),\ + def,\ + none\ + }; \ + return (const ASN1_ITEM *) &internal_adb; \ + } \ + void dummy_function(void) + +# 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 */ + const char *field_name; /* Field name */ + 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 */ + int (*adb_cb)(long *psel); /* Application callback */ + 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 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) + +/* Field is embedded and not a pointer */ +# define ASN1_TFLG_EMBED (0x1 << 12) + +/* 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; /* further data and type-specific functions */ + /* funcs can be ASN1_PRIMITIVE_FUNCS*, ASN1_EXTERN_FUNCS*, or ASN1_AUX* */ + long size; /* Structure size (usually) */ + const char *sname; /* Structure name */ +}; + +/* + * 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 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_d2i_ex(ASN1_VALUE **pval, const unsigned char **in, long len, + const ASN1_ITEM *it, int tag, int aclass, char opt, + ASN1_TLC *ctx, OSSL_LIB_CTX *libctx, + const char *propq); +typedef int ASN1_ex_i2d(const 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 int ASN1_ex_new_ex_func(ASN1_VALUE **pval, const ASN1_ITEM *it, + OSSL_LIB_CTX *libctx, const char *propq); +typedef void ASN1_ex_free_func(ASN1_VALUE **pval, const ASN1_ITEM *it); + +typedef int ASN1_ex_print_func(BIO *out, const ASN1_VALUE **pval, + int indent, const char *fname, + const ASN1_PCTX *pctx); + +typedef int ASN1_primitive_i2c(const 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, const ASN1_VALUE **pval, + const ASN1_ITEM *it, int indent, + const ASN1_PCTX *pctx); + +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_ex_new_ex_func *asn1_ex_new_ex; + ASN1_ex_d2i_ex *asn1_ex_d2i_ex; +} 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. + * For the operations ASN1_OP_I2D_PRE, ASN1_OP_I2D_POST, ASN1_OP_PRINT_PRE, and + * ASN1_OP_PRINT_POST, meanwhile a variant of the callback with const parameter + * 'in' is provided to make clear statically that its input is not modified. If + * and only if this variant is in use the flag ASN1_AFLG_CONST_CB must be set. + */ + +typedef int ASN1_aux_cb(int operation, ASN1_VALUE **in, const ASN1_ITEM *it, + void *exarg); +typedef int ASN1_aux_const_cb(int operation, const 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; /* Offset of lock value */ + ASN1_aux_cb *asn1_cb; + int enc_offset; /* Offset of ASN1_ENCODING structure */ + ASN1_aux_const_cb *asn1_const_cb; /* for ASN1_OP_I2D_ and ASN1_OP_PRINT_ */ +} 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 +/* Use the new asn1_const_cb */ +# define ASN1_AFLG_CONST_CB 8 + +/* 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 +# define ASN1_OP_DUP_PRE 14 +# define ASN1_OP_DUP_POST 15 +# define ASN1_OP_GET0_LIBCTX 16 +# define ASN1_OP_GET0_PROPQ 17 + +/* 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) + +# 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(const stname *a, unsigned char **out) \ + { \ + return ASN1_item_i2d((const ASN1_VALUE *)a, out, ASN1_ITEM_rptr(itname));\ + } + +# define IMPLEMENT_ASN1_NDEF_FUNCTION(stname) \ + int i2d_##stname##_NDEF(const stname *a, unsigned char **out) \ + { \ + return ASN1_item_ndef_i2d((const ASN1_VALUE *)a, out, ASN1_ITEM_rptr(stname));\ + } + +# define IMPLEMENT_STATIC_ASN1_ENCODE_FUNCTIONS(stname) \ + static stname *d2i_##stname(stname **a, \ + const unsigned char **in, long len) \ + { \ + return (stname *)ASN1_item_d2i((ASN1_VALUE **)a, in, len, \ + ASN1_ITEM_rptr(stname)); \ + } \ + static int i2d_##stname(const stname *a, unsigned char **out) \ + { \ + return ASN1_item_i2d((const ASN1_VALUE *)a, out, \ + ASN1_ITEM_rptr(stname)); \ + } + +# define IMPLEMENT_ASN1_DUP_FUNCTION(stname) \ + stname * stname##_dup(const 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, const stname *x, int indent, \ + const ASN1_PCTX *pctx) \ + { \ + return ASN1_item_print(out, (const ASN1_VALUE *)x, indent, \ + ASN1_ITEM_rptr(itname), pctx); \ + } + +/* 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(INT32) +DECLARE_ASN1_ITEM(ZINT32) +DECLARE_ASN1_ITEM(UINT32) +DECLARE_ASN1_ITEM(ZUINT32) +DECLARE_ASN1_ITEM(INT64) +DECLARE_ASN1_ITEM(ZINT64) +DECLARE_ASN1_ITEM(UINT64) +DECLARE_ASN1_ITEM(ZUINT64) + +# ifndef OPENSSL_NO_DEPRECATED_3_0 +/* + * LONG and ZLONG are strongly discouraged for use as stored data, as the + * underlying C type (long) differs in size depending on the architecture. + * They are designed with 32-bit longs in mind. + */ +DECLARE_ASN1_ITEM(LONG) +DECLARE_ASN1_ITEM(ZLONG) +# endif + +{- + generate_stack_macros("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_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(const ASN1_VALUE **pval, unsigned char **out, + const ASN1_ITEM *it, int tag, int aclass); + +/* Legacy compatibility */ +# define IMPLEMENT_ASN1_FUNCTIONS_const(name) IMPLEMENT_ASN1_FUNCTIONS(name) +# define IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(stname, itname, fname) \ + IMPLEMENT_ASN1_ENCODE_FUNCTIONS_fname(stname, itname, fname) + +#ifdef __cplusplus +} +#endif +#endif |