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openssl/crypto/asn1/tasn_prn.c
Ben Laurie 5ce278a77b More type-checking.
2008-06-04 11:01:43 +00:00

628 lines
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/* tasn_prn.c */
/* Written by Dr Stephen N Henson (shenson@bigfoot.com) 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).
*
*/
#include <stddef.h>
#include "cryptlib.h"
#include <openssl/asn1.h>
#include <openssl/asn1t.h>
#include <openssl/objects.h>
#include <openssl/buffer.h>
#include <openssl/err.h>
#include <openssl/x509v3.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)
{
ASN1err(ASN1_F_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;
}
/* 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);
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 i, flags;
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)
{
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, const int bool,
const ASN1_PCTX *pctx)
{
const char *str;
switch (bool)
{
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)
{
char *s;
int ret = 1;
s = i2s_ASN1_INTEGER(NULL, str);
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_dump_indent(out, (char *)str->data, str->length,
indent + 2) <= 0)
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 bool = *(int *)fld;
if (bool == -1)
bool = it->size;
ret = asn1_print_boolean_ctx(out, bool, 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;
}
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