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Diffstat (limited to 'libressl/include64/openssl/asn1t.h')
| -rw-r--r-- | libressl/include64/openssl/asn1t.h | 951 |
1 files changed, 951 insertions, 0 deletions
diff --git a/libressl/include64/openssl/asn1t.h b/libressl/include64/openssl/asn1t.h new file mode 100644 index 00000000..d6168b65 --- /dev/null +++ b/libressl/include64/openssl/asn1t.h @@ -0,0 +1,951 @@ +/* $OpenBSD: asn1t.h,v 1.15 2019/08/20 13:10:09 inoguchi Exp $ */ +/* 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/opensslconf.h> + +#include <openssl/asn1.h> + +/* ASN1 template defines, structures and functions */ + +#ifdef __cplusplus +extern "C" { +#endif + +#ifndef LIBRESSL_INTERNAL + +/* 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 = { + +#define static_ASN1_ITEM_start(itname) \ + static const ASN1_ITEM itname##_it = { + +#define ASN1_ITEM_end(itname) \ + }; + + + +/* 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),\ + #stname \ + 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}; \ + 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 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_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 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),\ + #stname \ + 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}; \ + 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) } + +/* 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 */ + +#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) } +/* 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[] + + +#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\ + } + + +#define ADB_ENTRY(val, template) {val, template} + +#define ASN1_ADB_TEMPLATE(name) \ + static const ASN1_TEMPLATE name##_tt + +#endif /* !LIBRESSL_INTERNAL */ + +/* 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. + * + * 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_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_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 + +#ifndef LIBRESSL_INTERNAL + +/* 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(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) + +#endif /* !LIBRESSL_INTERNAL */ + +/* external definitions for primitive types */ + +extern const ASN1_ITEM ASN1_BOOLEAN_it; +extern const ASN1_ITEM ASN1_TBOOLEAN_it; +extern const ASN1_ITEM ASN1_FBOOLEAN_it; +extern const ASN1_ITEM ASN1_SEQUENCE_it; +extern const ASN1_ITEM CBIGNUM_it; +extern const ASN1_ITEM BIGNUM_it; +extern const ASN1_ITEM LONG_it; +extern const ASN1_ITEM ZLONG_it; + +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_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 |