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openssl/crypto/x509v3/v3_alt.c
Dr. Stephen Henson 08cba61011 Modify the X509 V3 extension lookup code.
1999-12-01 01:49:46 +00:00

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/* v3_alt.c */
/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
* project 1999.
*/
/* ====================================================================
* Copyright (c) 1999 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 <stdio.h>
#include "cryptlib.h"
#include <openssl/conf.h>
#include <openssl/x509v3.h>
static STACK_OF(GENERAL_NAME) *v2i_subject_alt(X509V3_EXT_METHOD *method, X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval);
static STACK_OF(GENERAL_NAME) *v2i_issuer_alt(X509V3_EXT_METHOD *method, X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval);
static int copy_email(X509V3_CTX *ctx, STACK_OF(GENERAL_NAME) *gens);
static int copy_issuer(X509V3_CTX *ctx, STACK_OF(GENERAL_NAME) *gens);
X509V3_EXT_METHOD v3_alt[] = {
{ NID_subject_alt_name, 0,
(X509V3_EXT_NEW)GENERAL_NAMES_new,
(X509V3_EXT_FREE)GENERAL_NAMES_free,
(X509V3_EXT_D2I)d2i_GENERAL_NAMES,
(X509V3_EXT_I2D)i2d_GENERAL_NAMES,
NULL, NULL,
(X509V3_EXT_I2V)i2v_GENERAL_NAMES,
(X509V3_EXT_V2I)v2i_subject_alt,
NULL, NULL, NULL},
{ NID_issuer_alt_name, 0,
(X509V3_EXT_NEW)GENERAL_NAMES_new,
(X509V3_EXT_FREE)GENERAL_NAMES_free,
(X509V3_EXT_D2I)d2i_GENERAL_NAMES,
(X509V3_EXT_I2D)i2d_GENERAL_NAMES,
NULL, NULL,
(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,
STACK_OF(GENERAL_NAME) *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)
{
char oline[256];
unsigned char *p;
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;
/* BUG: doesn't support IPV6 */
if(gen->d.ip->length != 4) {
X509V3_add_value("IP Address","<invalid>", &ret);
break;
}
sprintf(oline, "%d.%d.%d.%d", p[0], p[1], p[2], p[3]);
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;
}
static STACK_OF(GENERAL_NAME) *v2i_issuer_alt(X509V3_EXT_METHOD *method,
X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval)
{
STACK_OF(GENERAL_NAME) *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(!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, STACK_OF(GENERAL_NAME) *gens)
{
STACK_OF(GENERAL_NAME) *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 STACK_OF(GENERAL_NAME) *v2i_subject_alt(X509V3_EXT_METHOD *method,
X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval)
{
STACK_OF(GENERAL_NAME) *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(!name_cmp(cnf->name, "email") && cnf->value &&
!strcmp(cnf->value, "copy")) {
if(!copy_email(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;
}
/* Copy any email addresses in a certificate or request to
* GENERAL_NAMES
*/
static int copy_email(X509V3_CTX *ctx, STACK_OF(GENERAL_NAME) *gens)
{
X509_NAME *nm;
ASN1_IA5STRING *email = NULL;
X509_NAME_ENTRY *ne;
GENERAL_NAME *gen = NULL;
int i;
if(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(!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;
}
STACK_OF(GENERAL_NAME) *v2i_GENERAL_NAMES(X509V3_EXT_METHOD *method,
X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval)
{
GENERAL_NAME *gen;
STACK_OF(GENERAL_NAME) *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)
{
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,X509V3_R_MISSING_VALUE);
return NULL;
}
if(!(gen = GENERAL_NAME_new())) {
X509V3err(X509V3_F_V2I_GENERAL_NAME,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,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")) {
int i1,i2,i3,i4;
unsigned char ip[4];
if((sscanf(value, "%d.%d.%d.%d",&i1,&i2,&i3,&i4) != 4) ||
(i1 < 0) || (i1 > 255) || (i2 < 0) || (i2 > 255) ||
(i3 < 0) || (i3 > 255) || (i4 < 0) || (i4 > 255) ) {
X509V3err(X509V3_F_V2I_GENERAL_NAME,X509V3_R_BAD_IP_ADDRESS);
ERR_add_error_data(2, "value=", value);
goto err;
}
ip[0] = i1; ip[1] = i2 ; ip[2] = i3 ; ip[3] = i4;
if(!(gen->d.ip = M_ASN1_OCTET_STRING_new()) ||
!ASN1_STRING_set(gen->d.ip, ip, 4)) {
X509V3err(X509V3_F_V2I_GENERAL_NAME,ERR_R_MALLOC_FAILURE);
goto err;
}
type = GEN_IPADD;
} else {
X509V3err(X509V3_F_V2I_GENERAL_NAME,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,ERR_R_MALLOC_FAILURE);
goto err;
}
}
gen->type = type;
return gen;
err:
GENERAL_NAME_free(gen);
return NULL;
}
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