/* v3_alt.c */
/* Written by Dr Stephen N Henson ([email protected]) for the OpenSSL
* project.
*/
/* ====================================================================
* Copyright (c) 1999-2003 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
* [email protected].
*
* 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
* ([email protected]). This product includes software written by Tim
* Hudson ([email protected]).
*
*/
#include <stdio.h>
#include "cryptlib.h"
#include <openssl/conf.h>
#include <openssl/x509v3.h>
static GENERAL_NAMES *v2i_subject_alt(X509V3_EXT_METHOD *method, X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval);
static GENERAL_NAMES *v2i_issuer_alt(X509V3_EXT_METHOD *method, X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval);
static int copy_email(X509V3_CTX *ctx, GENERAL_NAMES *gens, int move_p);
static int copy_issuer(X509V3_CTX *ctx, GENERAL_NAMES *gens);
static int do_othername(GENERAL_NAME *gen, char *value, X509V3_CTX *ctx);
static int do_dirname(GENERAL_NAME *gen, char *value, X509V3_CTX *ctx);
const X509V3_EXT_METHOD v3_alt[] = {
{ NID_subject_alt_name, 0, ASN1_ITEM_ref(GENERAL_NAMES),
0,0,0,0,
0,0,
(X509V3_EXT_I2V)i2v_GENERAL_NAMES,
(X509V3_EXT_V2I)v2i_subject_alt,
NULL, NULL, NULL},
{ NID_issuer_alt_name, 0, ASN1_ITEM_ref(GENERAL_NAMES),
0,0,0,0,
0,0,
(X509V3_EXT_I2V)i2v_GENERAL_NAMES,
(X509V3_EXT_V2I)v2i_issuer_alt,
NULL, NULL, NULL},
};
STACK_OF(CONF_VALUE) *i2v_GENERAL_NAMES(X509V3_EXT_METHOD *method,
GENERAL_NAMES *gens, STACK_OF(CONF_VALUE) *ret)
{
int i;
GENERAL_NAME *gen;
for(i = 0; i < sk_GENERAL_NAME_num(gens); i++) {
gen = sk_GENERAL_NAME_value(gens, i);
ret = i2v_GENERAL_NAME(method, gen, ret);
}
if(!ret) return sk_CONF_VALUE_new_null();
return ret;
}
STACK_OF(CONF_VALUE) *i2v_GENERAL_NAME(X509V3_EXT_METHOD *method,
GENERAL_NAME *gen, STACK_OF(CONF_VALUE) *ret)
{
unsigned char *p;
char oline[256], htmp[5];
int i;
switch (gen->type)
{
case GEN_OTHERNAME:
X509V3_add_value("othername","<unsupported>", &ret);
break;
case GEN_X400:
X509V3_add_value("X400Name","<unsupported>", &ret);
break;
case GEN_EDIPARTY:
X509V3_add_value("EdiPartyName","<unsupported>", &ret);
break;
case GEN_EMAIL:
X509V3_add_value_uchar("email",gen->d.ia5->data, &ret);
break;
case GEN_DNS:
X509V3_add_value_uchar("DNS",gen->d.ia5->data, &ret);
break;
case GEN_URI:
X509V3_add_value_uchar("URI",gen->d.ia5->data, &ret);
break;
case GEN_DIRNAME:
X509_NAME_oneline(gen->d.dirn, oline, 256);
X509V3_add_value("DirName",oline, &ret);
break;
case GEN_IPADD:
p = gen->d.ip->data;
if(gen->d.ip->length == 4)
BIO_snprintf(oline, sizeof oline,
"%d.%d.%d.%d", p[0], p[1], p[2], p[3]);
else if(gen->d.ip->length == 16)
{
oline[0] = 0;
for (i = 0; i < 8; i++)
{
BIO_snprintf(htmp, sizeof htmp,
"%X", p[0] << 8 | p[1]);
p += 2;
strcat(oline, htmp);
if (i != 7)
strcat(oline, ":");
}
}
else
{
X509V3_add_value("IP Address","<invalid>", &ret);
break;
}
X509V3_add_value("IP Address",oline, &ret);
break;
case GEN_RID:
i2t_ASN1_OBJECT(oline, 256, gen->d.rid);
X509V3_add_value("Registered ID",oline, &ret);
break;
}
return ret;
}
int GENERAL_NAME_print(BIO *out, GENERAL_NAME *gen)
{
unsigned char *p;
int i;
switch (gen->type)
{
case GEN_OTHERNAME:
BIO_printf(out, "othername:<unsupported>");
break;
case GEN_X400:
BIO_printf(out, "X400Name:<unsupported>");
break;
case GEN_EDIPARTY:
/* Maybe fix this: it is supported now */
BIO_printf(out, "EdiPartyName:<unsupported>");
break;
case GEN_EMAIL:
BIO_printf(out, "email:%s",gen->d.ia5->data);
break;
case GEN_DNS:
BIO_printf(out, "DNS:%s",gen->d.ia5->data);
break;
case GEN_URI:
BIO_printf(out, "URI:%s",gen->d.ia5->data);
break;
case GEN_DIRNAME:
BIO_printf(out, "DirName: ");
X509_NAME_print_ex(out, gen->d.dirn, 0, XN_FLAG_ONELINE);
break;
case GEN_IPADD:
p = gen->d.ip->data;
if(gen->d.ip->length == 4)
BIO_printf(out, "IP Address:%d.%d.%d.%d",
p[0], p[1], p[2], p[3]);
else if(gen->d.ip->length == 16)
{
BIO_printf(out, "IP Address");
for (i = 0; i < 8; i++)
{
BIO_printf(out, ":%X", p[0] << 8 | p[1]);
p += 2;
}
BIO_puts(out, "\n");
}
else
{
BIO_printf(out,"IP Address:<invalid>");
break;
}
break;
case GEN_RID:
BIO_printf(out, "Registered ID");
i2a_ASN1_OBJECT(out, gen->d.rid);
break;
}
return 1;
}
static GENERAL_NAMES *v2i_issuer_alt(X509V3_EXT_METHOD *method,
X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval)
{
GENERAL_NAMES *gens = NULL;
CONF_VALUE *cnf;
int i;
if(!(gens = sk_GENERAL_NAME_new_null())) {
X509V3err(X509V3_F_V2I_ISSUER_ALT,ERR_R_MALLOC_FAILURE);
return NULL;
}
for(i = 0; i < sk_CONF_VALUE_num(nval); i++) {
cnf = sk_CONF_VALUE_value(nval, i);
if(!name_cmp(cnf->name, "issuer") && cnf->value &&
!strcmp(cnf->value, "copy")) {
if(!copy_issuer(ctx, gens)) goto err;
} else {
GENERAL_NAME *gen;
if(!(gen = v2i_GENERAL_NAME(method, ctx, cnf)))
goto err;
sk_GENERAL_NAME_push(gens, gen);
}
}
return gens;
err:
sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free);
return NULL;
}
/* Append subject altname of issuer to issuer alt name of subject */
static int copy_issuer(X509V3_CTX *ctx, GENERAL_NAMES *gens)
{
GENERAL_NAMES *ialt;
GENERAL_NAME *gen;
X509_EXTENSION *ext;
int i;
if(ctx && (ctx->flags == CTX_TEST)) return 1;
if(!ctx || !ctx->issuer_cert) {
X509V3err(X509V3_F_COPY_ISSUER,X509V3_R_NO_ISSUER_DETAILS);
goto err;
}
i = X509_get_ext_by_NID(ctx->issuer_cert, NID_subject_alt_name, -1);
if(i < 0) return 1;
if(!(ext = X509_get_ext(ctx->issuer_cert, i)) ||
!(ialt = X509V3_EXT_d2i(ext)) ) {
X509V3err(X509V3_F_COPY_ISSUER,X509V3_R_ISSUER_DECODE_ERROR);
goto err;
}
for(i = 0; i < sk_GENERAL_NAME_num(ialt); i++) {
gen = sk_GENERAL_NAME_value(ialt, i);
if(!sk_GENERAL_NAME_push(gens, gen)) {
X509V3err(X509V3_F_COPY_ISSUER,ERR_R_MALLOC_FAILURE);
goto err;
}
}
sk_GENERAL_NAME_free(ialt);
return 1;
err:
return 0;
}
static GENERAL_NAMES *v2i_subject_alt(X509V3_EXT_METHOD *method,
X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval)
{
GENERAL_NAMES *gens = NULL;
CONF_VALUE *cnf;
int i;
if(!(gens = sk_GENERAL_NAME_new_null())) {
X509V3err(X509V3_F_V2I_SUBJECT_ALT,ERR_R_MALLOC_FAILURE);
return NULL;
}
for(i = 0; i < sk_CONF_VALUE_num(nval); i++) {
cnf = sk_CONF_VALUE_value(nval, i);
if(!name_cmp(cnf->name, "email") && cnf->value &&
!strcmp(cnf->value, "copy")) {
if(!copy_email(ctx, gens, 0)) goto err;
} else if(!name_cmp(cnf->name, "email") && cnf->value &&
!strcmp(cnf->value, "move")) {
if(!copy_email(ctx, gens, 1)) goto err;
} else {
GENERAL_NAME *gen;
if(!(gen = v2i_GENERAL_NAME(method, ctx, cnf)))
goto err;
sk_GENERAL_NAME_push(gens, gen);
}
}
return gens;
err:
sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free);
return NULL;
}
/* Copy any email addresses in a certificate or request to
* GENERAL_NAMES
*/
static int copy_email(X509V3_CTX *ctx, GENERAL_NAMES *gens, int move_p)
{
X509_NAME *nm;
ASN1_IA5STRING *email = NULL;
X509_NAME_ENTRY *ne;
GENERAL_NAME *gen = NULL;
int i;
if(ctx != NULL && ctx->flags == CTX_TEST)
return 1;
if(!ctx || (!ctx->subject_cert && !ctx->subject_req)) {
X509V3err(X509V3_F_COPY_EMAIL,X509V3_R_NO_SUBJECT_DETAILS);
goto err;
}
/* Find the subject name */
if(ctx->subject_cert) nm = X509_get_subject_name(ctx->subject_cert);
else nm = X509_REQ_get_subject_name(ctx->subject_req);
/* Now add any email address(es) to STACK */
i = -1;
while((i = X509_NAME_get_index_by_NID(nm,
NID_pkcs9_emailAddress, i)) >= 0) {
ne = X509_NAME_get_entry(nm, i);
email = M_ASN1_IA5STRING_dup(X509_NAME_ENTRY_get_data(ne));
if (move_p)
{
X509_NAME_delete_entry(nm, i);
i--;
}
if(!email || !(gen = GENERAL_NAME_new())) {
X509V3err(X509V3_F_COPY_EMAIL,ERR_R_MALLOC_FAILURE);
goto err;
}
gen->d.ia5 = email;
email = NULL;
gen->type = GEN_EMAIL;
if(!sk_GENERAL_NAME_push(gens, gen)) {
X509V3err(X509V3_F_COPY_EMAIL,ERR_R_MALLOC_FAILURE);
goto err;
}
gen = NULL;
}
return 1;
err:
GENERAL_NAME_free(gen);
M_ASN1_IA5STRING_free(email);
return 0;
}
GENERAL_NAMES *v2i_GENERAL_NAMES(X509V3_EXT_METHOD *method,
X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval)
{
GENERAL_NAME *gen;
GENERAL_NAMES *gens = NULL;
CONF_VALUE *cnf;
int i;
if(!(gens = sk_GENERAL_NAME_new_null())) {
X509V3err(X509V3_F_V2I_GENERAL_NAMES,ERR_R_MALLOC_FAILURE);
return NULL;
}
for(i = 0; i < sk_CONF_VALUE_num(nval); i++) {
cnf = sk_CONF_VALUE_value(nval, i);
if(!(gen = v2i_GENERAL_NAME(method, ctx, cnf))) goto err;
sk_GENERAL_NAME_push(gens, gen);
}
return gens;
err:
sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free);
return NULL;
}
GENERAL_NAME *v2i_GENERAL_NAME(X509V3_EXT_METHOD *method, X509V3_CTX *ctx,
CONF_VALUE *cnf)
{
return v2i_GENERAL_NAME_ex(NULL, method, ctx, cnf, 0);
}
GENERAL_NAME *v2i_GENERAL_NAME_ex(GENERAL_NAME *out,
X509V3_EXT_METHOD *method, X509V3_CTX *ctx,
CONF_VALUE *cnf, int is_nc)
{
char is_string = 0;
int type;
GENERAL_NAME *gen = NULL;
char *name, *value;
name = cnf->name;
value = cnf->value;
if(!value)
{
X509V3err(X509V3_F_V2I_GENERAL_NAME_EX,X509V3_R_MISSING_VALUE);
return NULL;
}
if (out)
gen = out;
else
{
gen = GENERAL_NAME_new();
if(gen == NULL)
{
X509V3err(X509V3_F_V2I_GENERAL_NAME_EX,ERR_R_MALLOC_FAILURE);
return NULL;
}
}
if(!name_cmp(name, "email"))
{
is_string = 1;
type = GEN_EMAIL;
}
else if(!name_cmp(name, "URI"))
{
is_string = 1;
type = GEN_URI;
}
else if(!name_cmp(name, "DNS"))
{
is_string = 1;
type = GEN_DNS;
}
else if(!name_cmp(name, "RID"))
{
ASN1_OBJECT *obj;
if(!(obj = OBJ_txt2obj(value,0)))
{
X509V3err(X509V3_F_V2I_GENERAL_NAME_EX,X509V3_R_BAD_OBJECT);
ERR_add_error_data(2, "value=", value);
goto err;
}
gen->d.rid = obj;
type = GEN_RID;
}
else if(!name_cmp(name, "IP"))
{
if (is_nc)
gen->d.ip = a2i_IPADDRESS_NC(value);
else
gen->d.ip = a2i_IPADDRESS(value);
if(gen->d.ip == NULL)
{
X509V3err(X509V3_F_V2I_GENERAL_NAME_EX,X509V3_R_BAD_IP_ADDRESS);
ERR_add_error_data(2, "value=", value);
goto err;
}
type = GEN_IPADD;
}
else if(!name_cmp(name, "dirName"))
{
type = GEN_DIRNAME;
if (!do_dirname(gen, value, ctx))
{
X509V3err(X509V3_F_V2I_GENERAL_NAME_EX,X509V3_R_DIRNAME_ERROR);
goto err;
}
}
else if(!name_cmp(name, "otherName"))
{
if (!do_othername(gen, value, ctx))
{
X509V3err(X509V3_F_V2I_GENERAL_NAME_EX,X509V3_R_OTHERNAME_ERROR);
goto err;
}
type = GEN_OTHERNAME;
}
else
{
X509V3err(X509V3_F_V2I_GENERAL_NAME_EX,X509V3_R_UNSUPPORTED_OPTION);
ERR_add_error_data(2, "name=", name);
goto err;
}
if(is_string)
{
if(!(gen->d.ia5 = M_ASN1_IA5STRING_new()) ||
!ASN1_STRING_set(gen->d.ia5, (unsigned char*)value,
strlen(value)))
{
X509V3err(X509V3_F_V2I_GENERAL_NAME_EX,ERR_R_MALLOC_FAILURE);
goto err;
}
}
gen->type = type;
return gen;
err:
GENERAL_NAME_free(gen);
return NULL;
}
static int do_othername(GENERAL_NAME *gen, char *value, X509V3_CTX *ctx)
{
char *objtmp = NULL, *p;
int objlen;
if (!(p = strchr(value, ';')))
return 0;
if (!(gen->d.otherName = OTHERNAME_new()))
return 0;
/* Free this up because we will overwrite it.
* no need to free type_id because it is static
*/
ASN1_TYPE_free(gen->d.otherName->value);
if (!(gen->d.otherName->value = ASN1_generate_v3(p + 1, ctx)))
return 0;
objlen = p - value;
objtmp = OPENSSL_malloc(objlen + 1);
strncpy(objtmp, value, objlen);
objtmp[objlen] = 0;
gen->d.otherName->type_id = OBJ_txt2obj(objtmp, 0);
OPENSSL_free(objtmp);
if (!gen->d.otherName->type_id)
return 0;
return 1;
}
static int do_dirname(GENERAL_NAME *gen, char *value, X509V3_CTX *ctx)
{
int ret;
STACK_OF(CONF_VALUE) *sk;
X509_NAME *nm;
if (!(nm = X509_NAME_new()))
return 0;
sk = X509V3_get_section(ctx, value);
if (!sk)
{
X509V3err(X509V3_F_DO_DIRNAME,X509V3_R_SECTION_NOT_FOUND);
ERR_add_error_data(2, "section=", value);
X509_NAME_free(nm);
return 0;
}
/* FIXME: should allow other character types... */
ret = X509V3_NAME_from_section(nm, sk, MBSTRING_ASC);
if (!ret)
X509_NAME_free(nm);
gen->d.dirn = nm;
return ret;
}
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