/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
* All rights reserved.
*
* This package is an SSL implementation written
* by Eric Young (eay@cryptsoft.com).
* The implementation was written so as to conform with Netscapes SSL.
*
* This library is free for commercial and non-commercial use as long as
* the following conditions are aheared to. The following conditions
* apply to all code found in this distribution, be it the RC4, RSA,
* lhash, DES, etc., code; not just the SSL code. The SSL documentation
* included with this distribution is covered by the same copyright terms
* except that the holder is Tim Hudson (tjh@cryptsoft.com).
*
* Copyright remains Eric Young's, and as such any Copyright notices in
* the code are not to be removed.
* If this package is used in a product, Eric Young should be given attribution
* as the author of the parts of the library used.
* This can be in the form of a textual message at program startup or
* in documentation (online or textual) provided with the package.
*
* 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 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 acknowledgement:
* "This product includes cryptographic software written by
* Eric Young (eay@cryptsoft.com)"
* The word 'cryptographic' can be left out if the rouines from the library
* being used are not cryptographic related :-).
* 4. If you include any Windows specific code (or a derivative thereof) from
* the apps directory (application code) you must include an acknowledgement:
* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
*
* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
* ANY EXPRESS 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 AUTHOR OR 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.
*
* The licence and distribution terms for any publically available version or
* derivative of this code cannot be changed. i.e. this code cannot simply be
* copied and put under another distribution licence
* [including the GNU Public Licence.] */
#include <openssl/asn1.h>
#include <time.h>
#include <openssl/asn1t.h>
#include <openssl/err.h>
#include <openssl/obj.h>
#include <openssl/mem.h>
#include "asn1_locl.h"
/* Print routines.
*/
/* ASN1_PCTX routines */
ASN1_PCTX default_pctx =
{
ASN1_PCTX_FLAGS_SHOW_ABSENT, /* flags */
0, /* nm_flags */
0, /* cert_flags */
0, /* oid_flags */
0 /* str_flags */
};
ASN1_PCTX *ASN1_PCTX_new(void)
{
ASN1_PCTX *ret;
ret = OPENSSL_malloc(sizeof(ASN1_PCTX));
if (ret == NULL)
{
OPENSSL_PUT_ERROR(ASN1, ASN1_PCTX_new, ERR_R_MALLOC_FAILURE);
return NULL;
}
ret->flags = 0;
ret->nm_flags = 0;
ret->cert_flags = 0;
ret->oid_flags = 0;
ret->str_flags = 0;
return ret;
}
void ASN1_PCTX_free(ASN1_PCTX *p)
{
OPENSSL_free(p);
}
unsigned long ASN1_PCTX_get_flags(ASN1_PCTX *p)
{
return p->flags;
}
void ASN1_PCTX_set_flags(ASN1_PCTX *p, unsigned long flags)
{
p->flags = flags;
}
unsigned long ASN1_PCTX_get_nm_flags(ASN1_PCTX *p)
{
return p->nm_flags;
}
void ASN1_PCTX_set_nm_flags(ASN1_PCTX *p, unsigned long flags)
{
p->nm_flags = flags;
}
unsigned long ASN1_PCTX_get_cert_flags(ASN1_PCTX *p)
{
return p->cert_flags;
}
void ASN1_PCTX_set_cert_flags(ASN1_PCTX *p, unsigned long flags)
{
p->cert_flags = flags;
}
unsigned long ASN1_PCTX_get_oid_flags(ASN1_PCTX *p)
{
return p->oid_flags;
}
void ASN1_PCTX_set_oid_flags(ASN1_PCTX *p, unsigned long flags)
{
p->oid_flags = flags;
}
unsigned long ASN1_PCTX_get_str_flags(ASN1_PCTX *p)
{
return p->str_flags;
}
void ASN1_PCTX_set_str_flags(ASN1_PCTX *p, unsigned long flags)
{
p->str_flags = flags;
}
/* Main print routines */
static int asn1_item_print_ctx(BIO *out, ASN1_VALUE **fld, int indent,
const ASN1_ITEM *it,
const char *fname, const char *sname,
int nohdr, const ASN1_PCTX *pctx);
int asn1_template_print_ctx(BIO *out, ASN1_VALUE **fld, int indent,
const ASN1_TEMPLATE *tt, const ASN1_PCTX *pctx);
static int asn1_primitive_print(BIO *out, ASN1_VALUE **fld,
const ASN1_ITEM *it, int indent,
const char *fname, const char *sname,
const ASN1_PCTX *pctx);
static int asn1_print_fsname(BIO *out, int indent,
const char *fname, const char *sname,
const ASN1_PCTX *pctx);
int ASN1_item_print(BIO *out, ASN1_VALUE *ifld, int indent,
const ASN1_ITEM *it, const ASN1_PCTX *pctx)
{
const char *sname;
if (pctx == NULL)
pctx = &default_pctx;
if (pctx->flags & ASN1_PCTX_FLAGS_NO_STRUCT_NAME)
sname = NULL;
else
sname = it->sname;
return asn1_item_print_ctx(out, &ifld, indent, it,
NULL, sname, 0, pctx);
}
static int asn1_item_print_ctx(BIO *out, ASN1_VALUE **fld, int indent,
const ASN1_ITEM *it,
const char *fname, const char *sname,
int nohdr, const ASN1_PCTX *pctx)
{
const ASN1_TEMPLATE *tt;
const ASN1_EXTERN_FUNCS *ef;
ASN1_VALUE **tmpfld;
const ASN1_AUX *aux = it->funcs;
ASN1_aux_cb *asn1_cb;
ASN1_PRINT_ARG parg;
int i;
if (aux && aux->asn1_cb)
{
parg.out = out;
parg.indent = indent;
parg.pctx = pctx;
asn1_cb = aux->asn1_cb;
}
else asn1_cb = 0;
if(*fld == NULL)
{
if (pctx->flags & ASN1_PCTX_FLAGS_SHOW_ABSENT)
{
if (!nohdr && !asn1_print_fsname(out, indent,
fname, sname, pctx))
return 0;
if (BIO_puts(out, "<ABSENT>\n") <= 0)
return 0;
}
return 1;
}
switch(it->itype)
{
case ASN1_ITYPE_PRIMITIVE:
if(it->templates)
{
if (!asn1_template_print_ctx(out, fld, indent,
it->templates, pctx))
return 0;
break;
}
/* fall thru */
case ASN1_ITYPE_MSTRING:
if (!asn1_primitive_print(out, fld, it,
indent, fname, sname,pctx))
return 0;
break;
case ASN1_ITYPE_EXTERN:
if (!nohdr && !asn1_print_fsname(out, indent, fname, sname, pctx))
return 0;
/* Use new style print routine if possible */
ef = it->funcs;
if (ef && ef->asn1_ex_print)
{
i = ef->asn1_ex_print(out, fld, indent, "", pctx);
if (!i)
return 0;
if ((i == 2) && (BIO_puts(out, "\n") <= 0))
return 0;
return 1;
}
else if (sname &&
BIO_printf(out, ":EXTERNAL TYPE %s\n", sname) <= 0)
return 0;
break;
case ASN1_ITYPE_CHOICE:
#if 0
if (!nohdr && !asn1_print_fsname(out, indent, fname, sname, pctx))
return 0;
#endif
/* CHOICE type, get selector */
i = asn1_get_choice_selector(fld, it);
/* This should never happen... */
if((i < 0) || (i >= it->tcount))
{
if (BIO_printf(out,
"ERROR: selector [%d] invalid\n", i) <= 0)
return 0;
return 1;
}
tt = it->templates + i;
tmpfld = asn1_get_field_ptr(fld, tt);
if (!asn1_template_print_ctx(out, tmpfld, indent, tt, pctx))
return 0;
break;
case ASN1_ITYPE_SEQUENCE:
case ASN1_ITYPE_NDEF_SEQUENCE:
if (!nohdr && !asn1_print_fsname(out, indent, fname, sname, pctx))
return 0;
if (fname || sname)
{
if (pctx->flags & ASN1_PCTX_FLAGS_SHOW_SEQUENCE)
{
if (BIO_puts(out, " {\n") <= 0)
return 0;
}
else
{
if (BIO_puts(out, "\n") <= 0)
return 0;
}
}
if (asn1_cb)
{
i = asn1_cb(ASN1_OP_PRINT_PRE, fld, it, &parg);
if (i == 0)
return 0;
if (i == 2)
return 1;
}
/* Print each field entry */
for(i = 0, tt = it->templates; i < it->tcount; i++, tt++)
{
const ASN1_TEMPLATE *seqtt;
seqtt = asn1_do_adb(fld, tt, 1);
if (!seqtt)
return 0;
tmpfld = asn1_get_field_ptr(fld, seqtt);
if (!asn1_template_print_ctx(out, tmpfld,
indent + 2, seqtt, pctx))
return 0;
}
if (pctx->flags & ASN1_PCTX_FLAGS_SHOW_SEQUENCE)
{
if (BIO_printf(out, "%*s}\n", indent, "") < 0)
return 0;
}
if (asn1_cb)
{
i = asn1_cb(ASN1_OP_PRINT_POST, fld, it, &parg);
if (i == 0)
return 0;
}
break;
default:
BIO_printf(out, "Unprocessed type %d\n", it->itype);
return 0;
}
return 1;
}
int asn1_template_print_ctx(BIO *out, ASN1_VALUE **fld, int indent,
const ASN1_TEMPLATE *tt, const ASN1_PCTX *pctx)
{
int flags;
size_t i;
const char *sname, *fname;
flags = tt->flags;
if(pctx->flags & ASN1_PCTX_FLAGS_SHOW_FIELD_STRUCT_NAME)
sname = ASN1_ITEM_ptr(tt->item)->sname;
else
sname = NULL;
if(pctx->flags & ASN1_PCTX_FLAGS_NO_FIELD_NAME)
fname = NULL;
else
fname = tt->field_name;
if(flags & ASN1_TFLG_SK_MASK)
{
const char *tname;
ASN1_VALUE *skitem;
STACK_OF(ASN1_VALUE) *stack;
/* SET OF, SEQUENCE OF */
if (fname)
{
if(pctx->flags & ASN1_PCTX_FLAGS_SHOW_SSOF)
{
if(flags & ASN1_TFLG_SET_OF)
tname = "SET";
else
tname = "SEQUENCE";
if (BIO_printf(out, "%*s%s OF %s {\n",
indent, "", tname, tt->field_name) <= 0)
return 0;
}
else if (BIO_printf(out, "%*s%s:\n", indent, "",
fname) <= 0)
return 0;
}
stack = (STACK_OF(ASN1_VALUE) *)*fld;
for(i = 0; i < sk_ASN1_VALUE_num(stack); i++)
{
if ((i > 0) && (BIO_puts(out, "\n") <= 0))
return 0;
skitem = sk_ASN1_VALUE_value(stack, i);
if (!asn1_item_print_ctx(out, &skitem, indent + 2,
ASN1_ITEM_ptr(tt->item), NULL, NULL, 1, pctx))
return 0;
}
if (!i && BIO_printf(out, "%*s<EMPTY>\n", indent + 2, "") <= 0)
return 0;
if(pctx->flags & ASN1_PCTX_FLAGS_SHOW_SEQUENCE)
{
if (BIO_printf(out, "%*s}\n", indent, "") <= 0)
return 0;
}
return 1;
}
return asn1_item_print_ctx(out, fld, indent, ASN1_ITEM_ptr(tt->item),
fname, sname, 0, pctx);
}
static int asn1_print_fsname(BIO *out, int indent,
const char *fname, const char *sname,
const ASN1_PCTX *pctx)
{
static char spaces[] = " ";
const int nspaces = sizeof(spaces) - 1;
#if 0
if (!sname && !fname)
return 1;
#endif
while (indent > nspaces)
{
if (BIO_write(out, spaces, nspaces) != nspaces)
return 0;
indent -= nspaces;
}
if (BIO_write(out, spaces, indent) != indent)
return 0;
if (pctx->flags & ASN1_PCTX_FLAGS_NO_STRUCT_NAME)
sname = NULL;
if (pctx->flags & ASN1_PCTX_FLAGS_NO_FIELD_NAME)
fname = NULL;
if (!sname && !fname)
return 1;
if (fname)
{
if (BIO_puts(out, fname) <= 0)
return 0;
}
if (sname)
{
if (fname)
{
if (BIO_printf(out, " (%s)", sname) <= 0)
return 0;
}
else
{
if (BIO_puts(out, sname) <= 0)
return 0;
}
}
if (BIO_write(out, ": ", 2) != 2)
return 0;
return 1;
}
static int asn1_print_boolean_ctx(BIO *out, int boolval,
const ASN1_PCTX *pctx)
{
const char *str;
switch (boolval)
{
case -1:
str = "BOOL ABSENT";
break;
case 0:
str = "FALSE";
break;
default:
str = "TRUE";
break;
}
if (BIO_puts(out, str) <= 0)
return 0;
return 1;
}
static int asn1_print_integer_ctx(BIO *out, ASN1_INTEGER *str,
const ASN1_PCTX *pctx)
{
BIGNUM *bn = NULL;
char *s = NULL;
int ret = 1;
bn = ASN1_INTEGER_to_BN(str, NULL);
if (bn == NULL) {
return 0;
}
s = BN_bn2dec(bn);
BN_free(bn);
if (s == NULL) {
return 0;
}
if (BIO_puts(out, s) <= 0) {
ret = 0;
}
OPENSSL_free(s);
return ret;
}
static int asn1_print_oid_ctx(BIO *out, const ASN1_OBJECT *oid,
const ASN1_PCTX *pctx)
{
char objbuf[80];
const char *ln;
ln = OBJ_nid2ln(OBJ_obj2nid(oid));
if(!ln)
ln = "";
OBJ_obj2txt(objbuf, sizeof objbuf, oid, 1);
if (BIO_printf(out, "%s (%s)", ln, objbuf) <= 0)
return 0;
return 1;
}
static int asn1_print_obstring_ctx(BIO *out, ASN1_STRING *str, int indent,
const ASN1_PCTX *pctx)
{
if (str->type == V_ASN1_BIT_STRING)
{
if (BIO_printf(out, " (%ld unused bits)\n",
str->flags & 0x7) <= 0)
return 0;
}
else if (BIO_puts(out, "\n") <= 0)
return 0;
if (str->length > 0 && !BIO_hexdump(out, str->data, str->length, indent + 2)) {
return 0;
}
return 1;
}
static int asn1_primitive_print(BIO *out, ASN1_VALUE **fld,
const ASN1_ITEM *it, int indent,
const char *fname, const char *sname,
const ASN1_PCTX *pctx)
{
long utype;
ASN1_STRING *str;
int ret = 1, needlf = 1;
const char *pname;
const ASN1_PRIMITIVE_FUNCS *pf;
pf = it->funcs;
if (!asn1_print_fsname(out, indent, fname, sname, pctx))
return 0;
if (pf && pf->prim_print)
return pf->prim_print(out, fld, it, indent, pctx);
str = (ASN1_STRING *)*fld;
if (it->itype == ASN1_ITYPE_MSTRING)
utype = str->type & ~V_ASN1_NEG;
else
utype = it->utype;
if (utype == V_ASN1_ANY)
{
ASN1_TYPE *atype = (ASN1_TYPE *)*fld;
utype = atype->type;
fld = &atype->value.asn1_value;
str = (ASN1_STRING *)*fld;
if (pctx->flags & ASN1_PCTX_FLAGS_NO_ANY_TYPE)
pname = NULL;
else
pname = ASN1_tag2str(utype);
}
else
{
if (pctx->flags & ASN1_PCTX_FLAGS_SHOW_TYPE)
pname = ASN1_tag2str(utype);
else
pname = NULL;
}
if (utype == V_ASN1_NULL)
{
if (BIO_puts(out, "NULL\n") <= 0)
return 0;
return 1;
}
if (pname)
{
if (BIO_puts(out, pname) <= 0)
return 0;
if (BIO_puts(out, ":") <= 0)
return 0;
}
switch (utype)
{
case V_ASN1_BOOLEAN:
{
int boolval = *(int *)fld;
if (boolval == -1)
boolval = it->size;
ret = asn1_print_boolean_ctx(out, boolval, pctx);
}
break;
case V_ASN1_INTEGER:
case V_ASN1_ENUMERATED:
ret = asn1_print_integer_ctx(out, str, pctx);
break;
case V_ASN1_UTCTIME:
ret = ASN1_UTCTIME_print(out, str);
break;
case V_ASN1_GENERALIZEDTIME:
ret = ASN1_GENERALIZEDTIME_print(out, str);
break;
case V_ASN1_OBJECT:
ret = asn1_print_oid_ctx(out, (const ASN1_OBJECT *)*fld, pctx);
break;
case V_ASN1_OCTET_STRING:
case V_ASN1_BIT_STRING:
ret = asn1_print_obstring_ctx(out, str, indent, pctx);
needlf = 0;
break;
case V_ASN1_SEQUENCE:
case V_ASN1_SET:
case V_ASN1_OTHER:
if (BIO_puts(out, "\n") <= 0)
return 0;
if (ASN1_parse_dump(out, str->data, str->length,
indent, 0) <= 0)
ret = 0;
needlf = 0;
break;
default:
ret = ASN1_STRING_print_ex(out, str, pctx->str_flags);
}
if (!ret)
return 0;
if (needlf && BIO_puts(out, "\n") <= 0)
return 0;
return 1;
}