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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