2 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
5 /* ====================================================================
6 * Copyright (c) 2000-2005 The OpenSSL Project. All rights reserved.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
20 * 3. All advertising materials mentioning features or use of this
21 * software must display the following acknowledgment:
22 * "This product includes software developed by the OpenSSL Project
23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26 * endorse or promote products derived from this software without
27 * prior written permission. For written permission, please contact
28 * licensing@OpenSSL.org.
30 * 5. Products derived from this software may not be called "OpenSSL"
31 * nor may "OpenSSL" appear in their names without prior written
32 * permission of the OpenSSL Project.
34 * 6. Redistributions of any form whatsoever must retain the following
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50 * OF THE POSSIBILITY OF SUCH DAMAGE.
51 * ====================================================================
53 * This product includes cryptographic software written by Eric Young
54 * (eay@cryptsoft.com). This product includes software written by Tim
55 * Hudson (tjh@cryptsoft.com).
58 #ifndef HEADER_ASN1T_H
59 #define HEADER_ASN1T_H
62 #include <openssl/asn1.h>
64 #ifdef OPENSSL_BUILD_SHLIBCRYPTO
65 # undef OPENSSL_EXTERN
66 # define OPENSSL_EXTERN OPENSSL_EXPORT
69 /* ASN1 template defines, structures and functions */
76 /* Macro to obtain ASN1_ADB pointer from a type (only used internally) */
77 #define ASN1_ADB_ptr(iptr) ((const ASN1_ADB *)(iptr))
80 /* Macros for start and end of ASN1_ITEM definition */
82 #define ASN1_ITEM_start(itname) \
83 OPENSSL_EXPORT const ASN1_ITEM itname##_it = {
85 #define ASN1_ITEM_end(itname) \
88 /* Macros to aid ASN1 template writing */
90 #define ASN1_ITEM_TEMPLATE(tname) \
91 static const ASN1_TEMPLATE tname##_item_tt
93 #define ASN1_ITEM_TEMPLATE_END(tname) \
95 ASN1_ITEM_start(tname) \
96 ASN1_ITYPE_PRIMITIVE,\
106 /* This is a ASN1 type which just embeds a template */
108 /* This pair helps declare a SEQUENCE. We can do:
110 * ASN1_SEQUENCE(stname) = {
111 * ... SEQUENCE components ...
112 * } ASN1_SEQUENCE_END(stname)
114 * This will produce an ASN1_ITEM called stname_it
115 * for a structure called stname.
117 * If you want the same structure but a different
120 * ASN1_SEQUENCE(itname) = {
121 * ... SEQUENCE components ...
122 * } ASN1_SEQUENCE_END_name(stname, itname)
124 * This will create an item called itname_it using
125 * a structure called stname.
128 #define ASN1_SEQUENCE(tname) \
129 static const ASN1_TEMPLATE tname##_seq_tt[]
131 #define ASN1_SEQUENCE_END(stname) ASN1_SEQUENCE_END_name(stname, stname)
133 #define ASN1_SEQUENCE_END_name(stname, tname) \
135 ASN1_ITEM_start(tname) \
136 ASN1_ITYPE_SEQUENCE,\
139 sizeof(tname##_seq_tt) / sizeof(ASN1_TEMPLATE),\
145 #define ASN1_NDEF_SEQUENCE(tname) \
148 #define ASN1_NDEF_SEQUENCE_cb(tname, cb) \
149 ASN1_SEQUENCE_cb(tname, cb)
151 #define ASN1_SEQUENCE_cb(tname, cb) \
152 static const ASN1_AUX tname##_aux = {NULL, 0, 0, 0, cb, 0}; \
155 #define ASN1_BROKEN_SEQUENCE(tname) \
156 static const ASN1_AUX tname##_aux = {NULL, ASN1_AFLG_BROKEN, 0, 0, 0, 0}; \
159 #define ASN1_SEQUENCE_ref(tname, cb, lck) \
160 static const ASN1_AUX tname##_aux = {NULL, ASN1_AFLG_REFCOUNT, offsetof(tname, references), lck, cb, 0}; \
163 #define ASN1_SEQUENCE_enc(tname, enc, cb) \
164 static const ASN1_AUX tname##_aux = {NULL, ASN1_AFLG_ENCODING, 0, 0, cb, offsetof(tname, enc)}; \
167 #define ASN1_NDEF_SEQUENCE_END(tname) \
169 ASN1_ITEM_start(tname) \
170 ASN1_ITYPE_NDEF_SEQUENCE,\
173 sizeof(tname##_seq_tt) / sizeof(ASN1_TEMPLATE),\
179 #define ASN1_BROKEN_SEQUENCE_END(stname) ASN1_SEQUENCE_END_ref(stname, stname)
181 #define ASN1_SEQUENCE_END_enc(stname, tname) ASN1_SEQUENCE_END_ref(stname, tname)
183 #define ASN1_SEQUENCE_END_cb(stname, tname) ASN1_SEQUENCE_END_ref(stname, tname)
185 #define ASN1_SEQUENCE_END_ref(stname, tname) \
187 ASN1_ITEM_start(tname) \
188 ASN1_ITYPE_SEQUENCE,\
191 sizeof(tname##_seq_tt) / sizeof(ASN1_TEMPLATE),\
197 #define ASN1_NDEF_SEQUENCE_END_cb(stname, tname) \
199 ASN1_ITEM_start(tname) \
200 ASN1_ITYPE_NDEF_SEQUENCE,\
203 sizeof(tname##_seq_tt) / sizeof(ASN1_TEMPLATE),\
210 /* This pair helps declare a CHOICE type. We can do:
212 * ASN1_CHOICE(chname) = {
213 * ... CHOICE options ...
214 * ASN1_CHOICE_END(chname)
216 * This will produce an ASN1_ITEM called chname_it
217 * for a structure called chname. The structure
218 * definition must look like this:
222 * ASN1_SOMETHING *opt1;
223 * ASN1_SOMEOTHER *opt2;
227 * the name of the selector must be 'type'.
228 * to use an alternative selector name use the
229 * ASN1_CHOICE_END_selector() version.
232 #define ASN1_CHOICE(tname) \
233 static const ASN1_TEMPLATE tname##_ch_tt[]
235 #define ASN1_CHOICE_cb(tname, cb) \
236 static const ASN1_AUX tname##_aux = {NULL, 0, 0, 0, cb, 0}; \
239 #define ASN1_CHOICE_END(stname) ASN1_CHOICE_END_name(stname, stname)
241 #define ASN1_CHOICE_END_name(stname, tname) ASN1_CHOICE_END_selector(stname, tname, type)
243 #define ASN1_CHOICE_END_selector(stname, tname, selname) \
245 ASN1_ITEM_start(tname) \
247 offsetof(stname,selname) ,\
249 sizeof(tname##_ch_tt) / sizeof(ASN1_TEMPLATE),\
255 #define ASN1_CHOICE_END_cb(stname, tname, selname) \
257 ASN1_ITEM_start(tname) \
259 offsetof(stname,selname) ,\
261 sizeof(tname##_ch_tt) / sizeof(ASN1_TEMPLATE),\
267 /* This helps with the template wrapper form of ASN1_ITEM */
269 #define ASN1_EX_TEMPLATE_TYPE(flags, tag, name, type) { \
271 #name, ASN1_ITEM_ref(type) }
273 /* These help with SEQUENCE or CHOICE components */
275 /* used to declare other types */
277 #define ASN1_EX_TYPE(flags, tag, stname, field, type) { \
278 (flags), (tag), offsetof(stname, field),\
279 #field, ASN1_ITEM_ref(type) }
281 /* used when the structure is combined with the parent */
283 #define ASN1_EX_COMBINE(flags, tag, type) { \
284 (flags)|ASN1_TFLG_COMBINE, (tag), 0, NULL, ASN1_ITEM_ref(type) }
286 /* implicit and explicit helper macros */
288 #define ASN1_IMP_EX(stname, field, type, tag, ex) \
289 ASN1_EX_TYPE(ASN1_TFLG_IMPLICIT | ex, tag, stname, field, type)
291 #define ASN1_EXP_EX(stname, field, type, tag, ex) \
292 ASN1_EX_TYPE(ASN1_TFLG_EXPLICIT | ex, tag, stname, field, type)
294 /* Any defined by macros: the field used is in the table itself */
296 #define ASN1_ADB_OBJECT(tblname) { ASN1_TFLG_ADB_OID, -1, 0, #tblname, (const ASN1_ITEM *)&(tblname##_adb) }
297 #define ASN1_ADB_INTEGER(tblname) { ASN1_TFLG_ADB_INT, -1, 0, #tblname, (const ASN1_ITEM *)&(tblname##_adb) }
298 /* Plain simple type */
299 #define ASN1_SIMPLE(stname, field, type) ASN1_EX_TYPE(0,0, stname, field, type)
301 /* OPTIONAL simple type */
302 #define ASN1_OPT(stname, field, type) ASN1_EX_TYPE(ASN1_TFLG_OPTIONAL, 0, stname, field, type)
304 /* IMPLICIT tagged simple type */
305 #define ASN1_IMP(stname, field, type, tag) ASN1_IMP_EX(stname, field, type, tag, 0)
307 /* IMPLICIT tagged OPTIONAL simple type */
308 #define ASN1_IMP_OPT(stname, field, type, tag) ASN1_IMP_EX(stname, field, type, tag, ASN1_TFLG_OPTIONAL)
310 /* Same as above but EXPLICIT */
312 #define ASN1_EXP(stname, field, type, tag) ASN1_EXP_EX(stname, field, type, tag, 0)
313 #define ASN1_EXP_OPT(stname, field, type, tag) ASN1_EXP_EX(stname, field, type, tag, ASN1_TFLG_OPTIONAL)
315 /* SEQUENCE OF type */
316 #define ASN1_SEQUENCE_OF(stname, field, type) \
317 ASN1_EX_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, stname, field, type)
319 /* OPTIONAL SEQUENCE OF */
320 #define ASN1_SEQUENCE_OF_OPT(stname, field, type) \
321 ASN1_EX_TYPE(ASN1_TFLG_SEQUENCE_OF|ASN1_TFLG_OPTIONAL, 0, stname, field, type)
323 /* Same as above but for SET OF */
325 #define ASN1_SET_OF(stname, field, type) \
326 ASN1_EX_TYPE(ASN1_TFLG_SET_OF, 0, stname, field, type)
328 #define ASN1_SET_OF_OPT(stname, field, type) \
329 ASN1_EX_TYPE(ASN1_TFLG_SET_OF|ASN1_TFLG_OPTIONAL, 0, stname, field, type)
331 /* Finally compound types of SEQUENCE, SET, IMPLICIT, EXPLICIT and OPTIONAL */
333 #define ASN1_IMP_SET_OF(stname, field, type, tag) \
334 ASN1_IMP_EX(stname, field, type, tag, ASN1_TFLG_SET_OF)
336 #define ASN1_EXP_SET_OF(stname, field, type, tag) \
337 ASN1_EXP_EX(stname, field, type, tag, ASN1_TFLG_SET_OF)
339 #define ASN1_IMP_SET_OF_OPT(stname, field, type, tag) \
340 ASN1_IMP_EX(stname, field, type, tag, ASN1_TFLG_SET_OF|ASN1_TFLG_OPTIONAL)
342 #define ASN1_EXP_SET_OF_OPT(stname, field, type, tag) \
343 ASN1_EXP_EX(stname, field, type, tag, ASN1_TFLG_SET_OF|ASN1_TFLG_OPTIONAL)
345 #define ASN1_IMP_SEQUENCE_OF(stname, field, type, tag) \
346 ASN1_IMP_EX(stname, field, type, tag, ASN1_TFLG_SEQUENCE_OF)
348 #define ASN1_IMP_SEQUENCE_OF_OPT(stname, field, type, tag) \
349 ASN1_IMP_EX(stname, field, type, tag, ASN1_TFLG_SEQUENCE_OF|ASN1_TFLG_OPTIONAL)
351 #define ASN1_EXP_SEQUENCE_OF(stname, field, type, tag) \
352 ASN1_EXP_EX(stname, field, type, tag, ASN1_TFLG_SEQUENCE_OF)
354 #define ASN1_EXP_SEQUENCE_OF_OPT(stname, field, type, tag) \
355 ASN1_EXP_EX(stname, field, type, tag, ASN1_TFLG_SEQUENCE_OF|ASN1_TFLG_OPTIONAL)
357 /* EXPLICIT using indefinite length constructed form */
358 #define ASN1_NDEF_EXP(stname, field, type, tag) \
359 ASN1_EXP_EX(stname, field, type, tag, ASN1_TFLG_NDEF)
361 /* EXPLICIT OPTIONAL using indefinite length constructed form */
362 #define ASN1_NDEF_EXP_OPT(stname, field, type, tag) \
363 ASN1_EXP_EX(stname, field, type, tag, ASN1_TFLG_OPTIONAL|ASN1_TFLG_NDEF)
365 /* Macros for the ASN1_ADB structure */
367 #define ASN1_ADB(name) \
368 static const ASN1_ADB_TABLE name##_adbtbl[]
370 #define ASN1_ADB_END(name, flags, field, app_table, def, none) \
372 static const ASN1_ADB name##_adb = {\
374 offsetof(name, field),\
377 sizeof(name##_adbtbl) / sizeof(ASN1_ADB_TABLE),\
382 #define ADB_ENTRY(val, template) {val, template}
384 #define ASN1_ADB_TEMPLATE(name) \
385 static const ASN1_TEMPLATE name##_tt
387 /* This is the ASN1 template structure that defines
388 * a wrapper round the actual type. It determines the
389 * actual position of the field in the value structure,
390 * various flags such as OPTIONAL and the field name.
393 struct ASN1_TEMPLATE_st {
394 unsigned long flags; /* Various flags */
395 long tag; /* tag, not used if no tagging */
396 unsigned long offset; /* Offset of this field in structure */
397 #ifndef NO_ASN1_FIELD_NAMES
398 const char *field_name; /* Field name */
400 ASN1_ITEM_EXP *item; /* Relevant ASN1_ITEM or ASN1_ADB */
403 /* Macro to extract ASN1_ITEM and ASN1_ADB pointer from ASN1_TEMPLATE */
405 #define ASN1_TEMPLATE_item(t) (t->item_ptr)
406 #define ASN1_TEMPLATE_adb(t) (t->item_ptr)
408 typedef struct ASN1_ADB_TABLE_st ASN1_ADB_TABLE;
409 typedef struct ASN1_ADB_st ASN1_ADB;
412 unsigned long flags; /* Various flags */
413 unsigned long offset; /* Offset of selector field */
414 STACK_OF(ASN1_ADB_TABLE) **app_items; /* Application defined items */
415 const ASN1_ADB_TABLE *tbl; /* Table of possible types */
416 long tblcount; /* Number of entries in tbl */
417 const ASN1_TEMPLATE *default_tt; /* Type to use if no match */
418 const ASN1_TEMPLATE *null_tt; /* Type to use if selector is NULL */
421 struct ASN1_ADB_TABLE_st {
422 long value; /* NID for an object or value for an int */
423 const ASN1_TEMPLATE tt; /* item for this value */
428 /* Field is optional */
429 #define ASN1_TFLG_OPTIONAL (0x1)
431 /* Field is a SET OF */
432 #define ASN1_TFLG_SET_OF (0x1 << 1)
434 /* Field is a SEQUENCE OF */
435 #define ASN1_TFLG_SEQUENCE_OF (0x2 << 1)
437 /* Special case: this refers to a SET OF that
438 * will be sorted into DER order when encoded *and*
439 * the corresponding STACK will be modified to match
442 #define ASN1_TFLG_SET_ORDER (0x3 << 1)
444 /* Mask for SET OF or SEQUENCE OF */
445 #define ASN1_TFLG_SK_MASK (0x3 << 1)
447 /* These flags mean the tag should be taken from the
448 * tag field. If EXPLICIT then the underlying type
449 * is used for the inner tag.
452 /* IMPLICIT tagging */
453 #define ASN1_TFLG_IMPTAG (0x1 << 3)
456 /* EXPLICIT tagging, inner tag from underlying type */
457 #define ASN1_TFLG_EXPTAG (0x2 << 3)
459 #define ASN1_TFLG_TAG_MASK (0x3 << 3)
461 /* context specific IMPLICIT */
462 #define ASN1_TFLG_IMPLICIT ASN1_TFLG_IMPTAG|ASN1_TFLG_CONTEXT
464 /* context specific EXPLICIT */
465 #define ASN1_TFLG_EXPLICIT ASN1_TFLG_EXPTAG|ASN1_TFLG_CONTEXT
467 /* If tagging is in force these determine the
468 * type of tag to use. Otherwise the tag is
469 * determined by the underlying type. These
470 * values reflect the actual octet format.
474 #define ASN1_TFLG_UNIVERSAL (0x0<<6)
475 /* Application tag */
476 #define ASN1_TFLG_APPLICATION (0x1<<6)
477 /* Context specific tag */
478 #define ASN1_TFLG_CONTEXT (0x2<<6)
480 #define ASN1_TFLG_PRIVATE (0x3<<6)
482 #define ASN1_TFLG_TAG_CLASS (0x3<<6)
484 /* These are for ANY DEFINED BY type. In this case
485 * the 'item' field points to an ASN1_ADB structure
486 * which contains a table of values to decode the
490 #define ASN1_TFLG_ADB_MASK (0x3<<8)
492 #define ASN1_TFLG_ADB_OID (0x1<<8)
494 #define ASN1_TFLG_ADB_INT (0x1<<9)
496 /* This flag means a parent structure is passed
497 * instead of the field: this is useful is a
498 * SEQUENCE is being combined with a CHOICE for
499 * example. Since this means the structure and
500 * item name will differ we need to use the
501 * ASN1_CHOICE_END_name() macro for example.
504 #define ASN1_TFLG_COMBINE (0x1<<10)
506 /* This flag when present in a SEQUENCE OF, SET OF
507 * or EXPLICIT causes indefinite length constructed
508 * encoding to be used if required.
511 #define ASN1_TFLG_NDEF (0x1<<11)
513 /* This is the actual ASN1 item itself */
515 struct ASN1_ITEM_st {
516 char itype; /* The item type, primitive, SEQUENCE, CHOICE or extern */
517 long utype; /* underlying type */
518 const ASN1_TEMPLATE *templates; /* If SEQUENCE or CHOICE this contains the contents */
519 long tcount; /* Number of templates if SEQUENCE or CHOICE */
520 const void *funcs; /* functions that handle this type */
521 long size; /* Structure size (usually)*/
522 #ifndef NO_ASN1_FIELD_NAMES
523 const char *sname; /* Structure name */
527 /* These are values for the itype field and
528 * determine how the type is interpreted.
530 * For PRIMITIVE types the underlying type
531 * determines the behaviour if items is NULL.
533 * Otherwise templates must contain a single
534 * template and the type is treated in the
535 * same way as the type specified in the template.
537 * For SEQUENCE types the templates field points
538 * to the members, the size field is the
541 * For CHOICE types the templates field points
542 * to each possible member (typically a union)
543 * and the 'size' field is the offset of the
546 * The 'funcs' field is used for application
547 * specific functions.
549 * For COMPAT types the funcs field gives a
550 * set of functions that handle this type, this
551 * supports the old d2i, i2d convention.
553 * The EXTERN type uses a new style d2i/i2d.
554 * The new style should be used where possible
555 * because it avoids things like the d2i IMPLICIT
558 * MSTRING is a multiple string type, it is used
559 * for a CHOICE of character strings where the
560 * actual strings all occupy an ASN1_STRING
561 * structure. In this case the 'utype' field
562 * has a special meaning, it is used as a mask
563 * of acceptable types using the B_ASN1 constants.
565 * NDEF_SEQUENCE is the same as SEQUENCE except
566 * that it will use indefinite length constructed
567 * encoding if requested.
571 #define ASN1_ITYPE_PRIMITIVE 0x0
573 #define ASN1_ITYPE_SEQUENCE 0x1
575 #define ASN1_ITYPE_CHOICE 0x2
577 #define ASN1_ITYPE_COMPAT 0x3
579 #define ASN1_ITYPE_EXTERN 0x4
581 #define ASN1_ITYPE_MSTRING 0x5
583 #define ASN1_ITYPE_NDEF_SEQUENCE 0x6
585 /* Cache for ASN1 tag and length, so we
586 * don't keep re-reading it for things
591 char valid; /* Values below are valid */
592 int ret; /* return value */
593 long plen; /* length */
594 int ptag; /* class value */
595 int pclass; /* class value */
596 int hdrlen; /* header length */
599 /* Typedefs for ASN1 function pointers */
601 typedef ASN1_VALUE * ASN1_new_func(void);
602 typedef void ASN1_free_func(ASN1_VALUE *a);
603 typedef ASN1_VALUE * ASN1_d2i_func(ASN1_VALUE **a, const unsigned char ** in, long length);
604 typedef int ASN1_i2d_func(ASN1_VALUE * a, unsigned char **in);
606 typedef int ASN1_ex_d2i(ASN1_VALUE **pval, const unsigned char **in, long len, const ASN1_ITEM *it,
607 int tag, int aclass, char opt, ASN1_TLC *ctx);
609 typedef int ASN1_ex_i2d(ASN1_VALUE **pval, unsigned char **out, const ASN1_ITEM *it, int tag, int aclass);
610 typedef int ASN1_ex_new_func(ASN1_VALUE **pval, const ASN1_ITEM *it);
611 typedef void ASN1_ex_free_func(ASN1_VALUE **pval, const ASN1_ITEM *it);
613 typedef int ASN1_ex_print_func(BIO *out, ASN1_VALUE **pval,
614 int indent, const char *fname,
615 const ASN1_PCTX *pctx);
617 typedef int ASN1_primitive_i2c(ASN1_VALUE **pval, unsigned char *cont, int *putype, const ASN1_ITEM *it);
618 typedef int ASN1_primitive_c2i(ASN1_VALUE **pval, const unsigned char *cont, int len, int utype, char *free_cont, const ASN1_ITEM *it);
619 typedef int ASN1_primitive_print(BIO *out, ASN1_VALUE **pval, const ASN1_ITEM *it, int indent, const ASN1_PCTX *pctx);
621 typedef struct ASN1_COMPAT_FUNCS_st {
622 ASN1_new_func *asn1_new;
623 ASN1_free_func *asn1_free;
624 ASN1_d2i_func *asn1_d2i;
625 ASN1_i2d_func *asn1_i2d;
628 typedef struct ASN1_EXTERN_FUNCS_st {
630 ASN1_ex_new_func *asn1_ex_new;
631 ASN1_ex_free_func *asn1_ex_free;
632 ASN1_ex_free_func *asn1_ex_clear;
633 ASN1_ex_d2i *asn1_ex_d2i;
634 ASN1_ex_i2d *asn1_ex_i2d;
635 ASN1_ex_print_func *asn1_ex_print;
638 typedef struct ASN1_PRIMITIVE_FUNCS_st {
641 ASN1_ex_new_func *prim_new;
642 ASN1_ex_free_func *prim_free;
643 ASN1_ex_free_func *prim_clear;
644 ASN1_primitive_c2i *prim_c2i;
645 ASN1_primitive_i2c *prim_i2c;
646 ASN1_primitive_print *prim_print;
647 } ASN1_PRIMITIVE_FUNCS;
649 /* This is the ASN1_AUX structure: it handles various
650 * miscellaneous requirements. For example the use of
651 * reference counts and an informational callback.
653 * The "informational callback" is called at various
654 * points during the ASN1 encoding and decoding. It can
655 * be used to provide minor customisation of the structures
656 * used. This is most useful where the supplied routines
657 * *almost* do the right thing but need some extra help
658 * at a few points. If the callback returns zero then
659 * it is assumed a fatal error has occurred and the
660 * main operation should be abandoned.
662 * If major changes in the default behaviour are required
663 * then an external type is more appropriate.
666 typedef int ASN1_aux_cb(int operation, ASN1_VALUE **in, const ASN1_ITEM *it,
669 typedef struct ASN1_AUX_st {
672 int ref_offset; /* Offset of reference value */
673 int ref_lock; /* Lock type to use */
674 ASN1_aux_cb *asn1_cb;
675 int enc_offset; /* Offset of ASN1_ENCODING structure */
678 /* For print related callbacks exarg points to this structure */
679 typedef struct ASN1_PRINT_ARG_st {
682 const ASN1_PCTX *pctx;
685 /* For streaming related callbacks exarg points to this structure */
686 typedef struct ASN1_STREAM_ARG_st {
687 /* BIO to stream through */
689 /* BIO with filters appended */
691 /* Streaming I/O boundary */
692 unsigned char **boundary;
695 /* Flags in ASN1_AUX */
697 /* Use a reference count */
698 #define ASN1_AFLG_REFCOUNT 1
699 /* Save the encoding of structure (useful for signatures) */
700 #define ASN1_AFLG_ENCODING 2
701 /* The Sequence length is invalid */
702 #define ASN1_AFLG_BROKEN 4
704 /* operation values for asn1_cb */
706 #define ASN1_OP_NEW_PRE 0
707 #define ASN1_OP_NEW_POST 1
708 #define ASN1_OP_FREE_PRE 2
709 #define ASN1_OP_FREE_POST 3
710 #define ASN1_OP_D2I_PRE 4
711 #define ASN1_OP_D2I_POST 5
712 #define ASN1_OP_I2D_PRE 6
713 #define ASN1_OP_I2D_POST 7
714 #define ASN1_OP_PRINT_PRE 8
715 #define ASN1_OP_PRINT_POST 9
716 #define ASN1_OP_STREAM_PRE 10
717 #define ASN1_OP_STREAM_POST 11
718 #define ASN1_OP_DETACHED_PRE 12
719 #define ASN1_OP_DETACHED_POST 13
721 /* Macro to implement a primitive type */
722 #define IMPLEMENT_ASN1_TYPE(stname) IMPLEMENT_ASN1_TYPE_ex(stname, stname, 0)
723 #define IMPLEMENT_ASN1_TYPE_ex(itname, vname, ex) \
724 ASN1_ITEM_start(itname) \
725 ASN1_ITYPE_PRIMITIVE, V_##vname, NULL, 0, NULL, ex, #itname \
726 ASN1_ITEM_end(itname)
728 /* Macro to implement a multi string type */
729 #define IMPLEMENT_ASN1_MSTRING(itname, mask) \
730 ASN1_ITEM_start(itname) \
731 ASN1_ITYPE_MSTRING, mask, NULL, 0, NULL, sizeof(ASN1_STRING), #itname \
732 ASN1_ITEM_end(itname)
734 /* Macro to implement an ASN1_ITEM in terms of old style funcs */
736 #define IMPLEMENT_COMPAT_ASN1(sname) IMPLEMENT_COMPAT_ASN1_type(sname, V_ASN1_SEQUENCE)
738 #define IMPLEMENT_COMPAT_ASN1_type(sname, tag) \
739 static const ASN1_COMPAT_FUNCS sname##_ff = { \
740 (ASN1_new_func *)sname##_new, \
741 (ASN1_free_func *)sname##_free, \
742 (ASN1_d2i_func *)d2i_##sname, \
743 (ASN1_i2d_func *)i2d_##sname, \
745 ASN1_ITEM_start(sname) \
755 #define IMPLEMENT_EXTERN_ASN1(sname, tag, fptrs) \
756 ASN1_ITEM_start(sname) \
766 /* Macro to implement standard functions in terms of ASN1_ITEM structures */
768 #define IMPLEMENT_ASN1_FUNCTIONS(stname) IMPLEMENT_ASN1_FUNCTIONS_fname(stname, stname, stname)
770 #define IMPLEMENT_ASN1_FUNCTIONS_name(stname, itname) IMPLEMENT_ASN1_FUNCTIONS_fname(stname, itname, itname)
772 #define IMPLEMENT_ASN1_FUNCTIONS_ENCODE_name(stname, itname) \
773 IMPLEMENT_ASN1_FUNCTIONS_ENCODE_fname(stname, itname, itname)
775 #define IMPLEMENT_STATIC_ASN1_ALLOC_FUNCTIONS(stname) \
776 IMPLEMENT_ASN1_ALLOC_FUNCTIONS_pfname(static, stname, stname, stname)
778 #define IMPLEMENT_ASN1_ALLOC_FUNCTIONS(stname) \
779 IMPLEMENT_ASN1_ALLOC_FUNCTIONS_fname(stname, stname, stname)
781 #define IMPLEMENT_ASN1_ALLOC_FUNCTIONS_pfname(pre, stname, itname, fname) \
782 pre stname *fname##_new(void) \
784 return (stname *)ASN1_item_new(ASN1_ITEM_rptr(itname)); \
786 pre void fname##_free(stname *a) \
788 ASN1_item_free((ASN1_VALUE *)a, ASN1_ITEM_rptr(itname)); \
791 #define IMPLEMENT_ASN1_ALLOC_FUNCTIONS_fname(stname, itname, fname) \
792 stname *fname##_new(void) \
794 return (stname *)ASN1_item_new(ASN1_ITEM_rptr(itname)); \
796 void fname##_free(stname *a) \
798 ASN1_item_free((ASN1_VALUE *)a, ASN1_ITEM_rptr(itname)); \
801 #define IMPLEMENT_ASN1_FUNCTIONS_fname(stname, itname, fname) \
802 IMPLEMENT_ASN1_ENCODE_FUNCTIONS_fname(stname, itname, fname) \
803 IMPLEMENT_ASN1_ALLOC_FUNCTIONS_fname(stname, itname, fname)
805 #define IMPLEMENT_ASN1_ENCODE_FUNCTIONS_fname(stname, itname, fname) \
806 stname *d2i_##fname(stname **a, const unsigned char **in, long len) \
808 return (stname *)ASN1_item_d2i((ASN1_VALUE **)a, in, len, ASN1_ITEM_rptr(itname));\
810 int i2d_##fname(stname *a, unsigned char **out) \
812 return ASN1_item_i2d((ASN1_VALUE *)a, out, ASN1_ITEM_rptr(itname));\
815 #define IMPLEMENT_ASN1_NDEF_FUNCTION(stname) \
816 int i2d_##stname##_NDEF(stname *a, unsigned char **out) \
818 return ASN1_item_ndef_i2d((ASN1_VALUE *)a, out, ASN1_ITEM_rptr(stname));\
821 /* This includes evil casts to remove const: they will go away when full
822 * ASN1 constification is done.
824 #define IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(stname, itname, fname) \
825 stname *d2i_##fname(stname **a, const unsigned char **in, long len) \
827 return (stname *)ASN1_item_d2i((ASN1_VALUE **)a, in, len, ASN1_ITEM_rptr(itname));\
829 int i2d_##fname(const stname *a, unsigned char **out) \
831 return ASN1_item_i2d((ASN1_VALUE *)a, out, ASN1_ITEM_rptr(itname));\
834 #define IMPLEMENT_ASN1_DUP_FUNCTION(stname) \
835 stname * stname##_dup(stname *x) \
837 return ASN1_item_dup(ASN1_ITEM_rptr(stname), x); \
840 #define IMPLEMENT_ASN1_PRINT_FUNCTION(stname) \
841 IMPLEMENT_ASN1_PRINT_FUNCTION_fname(stname, stname, stname)
843 #define IMPLEMENT_ASN1_PRINT_FUNCTION_fname(stname, itname, fname) \
844 int fname##_print_ctx(BIO *out, stname *x, int indent, \
845 const ASN1_PCTX *pctx) \
847 return ASN1_item_print(out, (ASN1_VALUE *)x, indent, \
848 ASN1_ITEM_rptr(itname), pctx); \
851 #define IMPLEMENT_ASN1_FUNCTIONS_const(name) \
852 IMPLEMENT_ASN1_FUNCTIONS_const_fname(name, name, name)
854 #define IMPLEMENT_ASN1_FUNCTIONS_const_fname(stname, itname, fname) \
855 IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(stname, itname, fname) \
856 IMPLEMENT_ASN1_ALLOC_FUNCTIONS_fname(stname, itname, fname)
858 /* external definitions for primitive types */
860 DECLARE_ASN1_ITEM(ASN1_BOOLEAN)
861 DECLARE_ASN1_ITEM(ASN1_TBOOLEAN)
862 DECLARE_ASN1_ITEM(ASN1_FBOOLEAN)
863 DECLARE_ASN1_ITEM(ASN1_SEQUENCE)
864 DECLARE_ASN1_ITEM(CBIGNUM)
865 DECLARE_ASN1_ITEM(BIGNUM)
866 DECLARE_ASN1_ITEM(LONG)
867 DECLARE_ASN1_ITEM(ZLONG)
869 DECLARE_STACK_OF(ASN1_VALUE)
871 /* Functions used internally by the ASN1 code */
873 int ASN1_item_ex_new(ASN1_VALUE **pval, const ASN1_ITEM *it);
874 void ASN1_item_ex_free(ASN1_VALUE **pval, const ASN1_ITEM *it);
875 int ASN1_template_new(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt);
876 int ASN1_primitive_new(ASN1_VALUE **pval, const ASN1_ITEM *it);
878 void ASN1_template_free(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt);
879 int ASN1_template_d2i(ASN1_VALUE **pval, const unsigned char **in, long len, const ASN1_TEMPLATE *tt);
880 int ASN1_item_ex_d2i(ASN1_VALUE **pval, const unsigned char **in, long len, const ASN1_ITEM *it,
881 int tag, int aclass, char opt, ASN1_TLC *ctx);
883 int ASN1_item_ex_i2d(ASN1_VALUE **pval, unsigned char **out, const ASN1_ITEM *it, int tag, int aclass);
884 int ASN1_template_i2d(ASN1_VALUE **pval, unsigned char **out, const ASN1_TEMPLATE *tt);
885 void ASN1_primitive_free(ASN1_VALUE **pval, const ASN1_ITEM *it);
887 int asn1_ex_i2c(ASN1_VALUE **pval, unsigned char *cont, int *putype, const ASN1_ITEM *it);
888 int asn1_ex_c2i(ASN1_VALUE **pval, const unsigned char *cont, int len, int utype, char *free_cont, const ASN1_ITEM *it);
890 int asn1_get_choice_selector(ASN1_VALUE **pval, const ASN1_ITEM *it);
891 int asn1_set_choice_selector(ASN1_VALUE **pval, int value, const ASN1_ITEM *it);
893 ASN1_VALUE ** asn1_get_field_ptr(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt);
895 const ASN1_TEMPLATE *asn1_do_adb(ASN1_VALUE **pval, const ASN1_TEMPLATE *tt, int nullerr);
897 int asn1_do_lock(ASN1_VALUE **pval, int op, const ASN1_ITEM *it);
899 void asn1_enc_init(ASN1_VALUE **pval, const ASN1_ITEM *it);
900 void asn1_enc_free(ASN1_VALUE **pval, const ASN1_ITEM *it);
901 int asn1_enc_restore(int *len, unsigned char **out, ASN1_VALUE **pval, const ASN1_ITEM *it);
902 int asn1_enc_save(ASN1_VALUE **pval, const unsigned char *in, int inlen, const ASN1_ITEM *it);