ref: 009439541d2c6e8af2596f8fb1b4df85861fd212
dir: /third_party/boringssl/src/crypto/x509/v3_alt.c/
/*
* Written by Dr Stephen N Henson (steve@openssl.org) 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
* 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 <string.h>
#include <openssl/conf.h>
#include <openssl/err.h>
#include <openssl/mem.h>
#include <openssl/obj.h>
#include <openssl/x509.h>
#include "internal.h"
static void *v2i_subject_alt(const X509V3_EXT_METHOD *method,
const X509V3_CTX *ctx,
const STACK_OF(CONF_VALUE) *nval);
static void *v2i_issuer_alt(const X509V3_EXT_METHOD *method,
const X509V3_CTX *ctx,
const STACK_OF(CONF_VALUE) *nval);
static int copy_email(const X509V3_CTX *ctx, GENERAL_NAMES *gens, int move_p);
static int copy_issuer(const X509V3_CTX *ctx, GENERAL_NAMES *gens);
static int do_othername(GENERAL_NAME *gen, const char *value,
const X509V3_CTX *ctx);
static int do_dirname(GENERAL_NAME *gen, const char *value,
const X509V3_CTX *ctx);
static STACK_OF(CONF_VALUE) *i2v_GENERAL_NAMES_cb(
const X509V3_EXT_METHOD *method, void *ext, STACK_OF(CONF_VALUE) *ret) {
return i2v_GENERAL_NAMES(method, ext, ret);
}
const X509V3_EXT_METHOD v3_alt[] = {
{NID_subject_alt_name, 0, ASN1_ITEM_ref(GENERAL_NAMES), 0, 0, 0, 0, 0, 0,
i2v_GENERAL_NAMES_cb, v2i_subject_alt, NULL, NULL, NULL},
{NID_issuer_alt_name, 0, ASN1_ITEM_ref(GENERAL_NAMES), 0, 0, 0, 0, 0, 0,
i2v_GENERAL_NAMES_cb, v2i_issuer_alt, NULL, NULL, NULL},
{NID_certificate_issuer, 0, ASN1_ITEM_ref(GENERAL_NAMES), 0, 0, 0, 0, 0, 0,
i2v_GENERAL_NAMES_cb, NULL, NULL, NULL, NULL},
};
STACK_OF(CONF_VALUE) *i2v_GENERAL_NAMES(const X509V3_EXT_METHOD *method,
const GENERAL_NAMES *gens,
STACK_OF(CONF_VALUE) *ret) {
int ret_was_null = ret == NULL;
for (size_t i = 0; i < sk_GENERAL_NAME_num(gens); i++) {
const GENERAL_NAME *gen = sk_GENERAL_NAME_value(gens, i);
STACK_OF(CONF_VALUE) *tmp = i2v_GENERAL_NAME(method, gen, ret);
if (tmp == NULL) {
if (ret_was_null) {
sk_CONF_VALUE_pop_free(ret, X509V3_conf_free);
}
return NULL;
}
ret = tmp;
}
if (!ret) {
return sk_CONF_VALUE_new_null();
}
return ret;
}
STACK_OF(CONF_VALUE) *i2v_GENERAL_NAME(const X509V3_EXT_METHOD *method,
const GENERAL_NAME *gen,
STACK_OF(CONF_VALUE) *ret) {
// Note the error-handling for this function relies on there being at most
// one |X509V3_add_value| call. If there were two and the second failed, we
// would need to sometimes free the first call's result.
unsigned char *p;
char oline[256], htmp[5];
int i;
switch (gen->type) {
case GEN_OTHERNAME:
if (!X509V3_add_value("othername", "<unsupported>", &ret)) {
return NULL;
}
break;
case GEN_X400:
if (!X509V3_add_value("X400Name", "<unsupported>", &ret)) {
return NULL;
}
break;
case GEN_EDIPARTY:
if (!X509V3_add_value("EdiPartyName", "<unsupported>", &ret)) {
return NULL;
}
break;
case GEN_EMAIL:
if (!x509V3_add_value_asn1_string("email", gen->d.ia5, &ret)) {
return NULL;
}
break;
case GEN_DNS:
if (!x509V3_add_value_asn1_string("DNS", gen->d.ia5, &ret)) {
return NULL;
}
break;
case GEN_URI:
if (!x509V3_add_value_asn1_string("URI", gen->d.ia5, &ret)) {
return NULL;
}
break;
case GEN_DIRNAME:
if (X509_NAME_oneline(gen->d.dirn, oline, 256) == NULL ||
!X509V3_add_value("DirName", oline, &ret)) {
return NULL;
}
break;
case GEN_IPADD:
p = gen->d.ip->data;
if (gen->d.ip->length == 4) {
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++) {
uint16_t v = ((uint16_t)p[0] << 8) | p[1];
snprintf(htmp, sizeof(htmp), "%X", v);
p += 2;
OPENSSL_strlcat(oline, htmp, sizeof(oline));
if (i != 7) {
OPENSSL_strlcat(oline, ":", sizeof(oline));
}
}
} else {
if (!X509V3_add_value("IP Address", "<invalid>", &ret)) {
return NULL;
}
break;
}
if (!X509V3_add_value("IP Address", oline, &ret)) {
return NULL;
}
break;
case GEN_RID:
i2t_ASN1_OBJECT(oline, 256, gen->d.rid);
if (!X509V3_add_value("Registered ID", oline, &ret)) {
return NULL;
}
break;
}
return ret;
}
int GENERAL_NAME_print(BIO *out, const GENERAL_NAME *gen) {
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:");
ASN1_STRING_print(out, gen->d.ia5);
break;
case GEN_DNS:
BIO_printf(out, "DNS:");
ASN1_STRING_print(out, gen->d.ia5);
break;
case GEN_URI:
BIO_printf(out, "URI:");
ASN1_STRING_print(out, gen->d.ia5);
break;
case GEN_DIRNAME:
BIO_printf(out, "DirName: ");
X509_NAME_print_ex(out, gen->d.dirn, 0, XN_FLAG_ONELINE);
break;
case GEN_IPADD: {
const unsigned char *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 (int i = 0; i < 8; i++) {
uint16_t v = ((uint16_t)p[0] << 8) | p[1];
BIO_printf(out, ":%X", v);
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 void *v2i_issuer_alt(const X509V3_EXT_METHOD *method,
const X509V3_CTX *ctx,
const STACK_OF(CONF_VALUE) *nval) {
GENERAL_NAMES *gens = sk_GENERAL_NAME_new_null();
if (gens == NULL) {
return NULL;
}
for (size_t i = 0; i < sk_CONF_VALUE_num(nval); i++) {
const CONF_VALUE *cnf = sk_CONF_VALUE_value(nval, i);
if (x509v3_conf_name_matches(cnf->name, "issuer") && cnf->value &&
!strcmp(cnf->value, "copy")) {
if (!copy_issuer(ctx, gens)) {
goto err;
}
} else {
GENERAL_NAME *gen = v2i_GENERAL_NAME(method, ctx, cnf);
if (gen == NULL || !sk_GENERAL_NAME_push(gens, gen)) {
GENERAL_NAME_free(gen);
goto err;
}
}
}
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(const X509V3_CTX *ctx, GENERAL_NAMES *gens) {
if (ctx && (ctx->flags == X509V3_CTX_TEST)) {
return 1;
}
if (!ctx || !ctx->issuer_cert) {
OPENSSL_PUT_ERROR(X509V3, X509V3_R_NO_ISSUER_DETAILS);
return 0;
}
int i = X509_get_ext_by_NID(ctx->issuer_cert, NID_subject_alt_name, -1);
if (i < 0) {
return 1;
}
int ret = 0;
GENERAL_NAMES *ialt = NULL;
X509_EXTENSION *ext;
if (!(ext = X509_get_ext(ctx->issuer_cert, i)) ||
!(ialt = X509V3_EXT_d2i(ext))) {
OPENSSL_PUT_ERROR(X509V3, X509V3_R_ISSUER_DECODE_ERROR);
goto err;
}
for (size_t j = 0; j < sk_GENERAL_NAME_num(ialt); j++) {
GENERAL_NAME *gen = sk_GENERAL_NAME_value(ialt, j);
if (!sk_GENERAL_NAME_push(gens, gen)) {
goto err;
}
// Ownership of |gen| has moved from |ialt| to |gens|.
sk_GENERAL_NAME_set(ialt, j, NULL);
}
ret = 1;
err:
GENERAL_NAMES_free(ialt);
return ret;
}
static void *v2i_subject_alt(const X509V3_EXT_METHOD *method,
const X509V3_CTX *ctx,
const STACK_OF(CONF_VALUE) *nval) {
GENERAL_NAMES *gens = sk_GENERAL_NAME_new_null();
if (gens == NULL) {
return NULL;
}
for (size_t i = 0; i < sk_CONF_VALUE_num(nval); i++) {
const CONF_VALUE *cnf = sk_CONF_VALUE_value(nval, i);
if (x509v3_conf_name_matches(cnf->name, "email") && cnf->value &&
!strcmp(cnf->value, "copy")) {
if (!copy_email(ctx, gens, 0)) {
goto err;
}
} else if (x509v3_conf_name_matches(cnf->name, "email") && cnf->value &&
!strcmp(cnf->value, "move")) {
if (!copy_email(ctx, gens, 1)) {
goto err;
}
} else {
GENERAL_NAME *gen = v2i_GENERAL_NAME(method, ctx, cnf);
if (gen == NULL || !sk_GENERAL_NAME_push(gens, gen)) {
GENERAL_NAME_free(gen);
goto err;
}
}
}
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(const 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 == X509V3_CTX_TEST) {
return 1;
}
if (!ctx || (!ctx->subject_cert && !ctx->subject_req)) {
OPENSSL_PUT_ERROR(X509V3, 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 = ASN1_STRING_dup(X509_NAME_ENTRY_get_data(ne));
if (move_p) {
X509_NAME_delete_entry(nm, i);
X509_NAME_ENTRY_free(ne);
i--;
}
if (!email || !(gen = GENERAL_NAME_new())) {
goto err;
}
gen->d.ia5 = email;
email = NULL;
gen->type = GEN_EMAIL;
if (!sk_GENERAL_NAME_push(gens, gen)) {
goto err;
}
gen = NULL;
}
return 1;
err:
GENERAL_NAME_free(gen);
ASN1_IA5STRING_free(email);
return 0;
}
GENERAL_NAMES *v2i_GENERAL_NAMES(const X509V3_EXT_METHOD *method,
const X509V3_CTX *ctx,
const STACK_OF(CONF_VALUE) *nval) {
GENERAL_NAMES *gens = sk_GENERAL_NAME_new_null();
if (gens == NULL) {
return NULL;
}
for (size_t i = 0; i < sk_CONF_VALUE_num(nval); i++) {
const CONF_VALUE *cnf = sk_CONF_VALUE_value(nval, i);
GENERAL_NAME *gen = v2i_GENERAL_NAME(method, ctx, cnf);
if (gen == NULL || !sk_GENERAL_NAME_push(gens, gen)) {
GENERAL_NAME_free(gen);
goto err;
}
}
return gens;
err:
sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free);
return NULL;
}
GENERAL_NAME *v2i_GENERAL_NAME(const X509V3_EXT_METHOD *method,
const X509V3_CTX *ctx, const CONF_VALUE *cnf) {
return v2i_GENERAL_NAME_ex(NULL, method, ctx, cnf, 0);
}
static GENERAL_NAME *a2i_GENERAL_NAME(GENERAL_NAME *out,
const X509V3_EXT_METHOD *method,
const X509V3_CTX *ctx, int gen_type,
const char *value, int is_nc) {
if (!value) {
OPENSSL_PUT_ERROR(X509V3, X509V3_R_MISSING_VALUE);
return NULL;
}
GENERAL_NAME *gen = NULL;
if (out) {
gen = out;
} else {
gen = GENERAL_NAME_new();
if (gen == NULL) {
return NULL;
}
}
switch (gen_type) {
case GEN_URI:
case GEN_EMAIL:
case GEN_DNS: {
ASN1_IA5STRING *str = ASN1_IA5STRING_new();
if (str == NULL || !ASN1_STRING_set(str, value, strlen(value))) {
ASN1_STRING_free(str);
goto err;
}
gen->type = gen_type;
gen->d.ia5 = str;
break;
}
case GEN_RID: {
ASN1_OBJECT *obj;
if (!(obj = OBJ_txt2obj(value, 0))) {
OPENSSL_PUT_ERROR(X509V3, X509V3_R_BAD_OBJECT);
ERR_add_error_data(2, "value=", value);
goto err;
}
gen->type = GEN_RID;
gen->d.rid = obj;
break;
}
case GEN_IPADD:
gen->type = GEN_IPADD;
if (is_nc) {
gen->d.ip = a2i_IPADDRESS_NC(value);
} else {
gen->d.ip = a2i_IPADDRESS(value);
}
if (gen->d.ip == NULL) {
OPENSSL_PUT_ERROR(X509V3, X509V3_R_BAD_IP_ADDRESS);
ERR_add_error_data(2, "value=", value);
goto err;
}
break;
case GEN_DIRNAME:
if (!do_dirname(gen, value, ctx)) {
OPENSSL_PUT_ERROR(X509V3, X509V3_R_DIRNAME_ERROR);
goto err;
}
break;
case GEN_OTHERNAME:
if (!do_othername(gen, value, ctx)) {
OPENSSL_PUT_ERROR(X509V3, X509V3_R_OTHERNAME_ERROR);
goto err;
}
break;
default:
OPENSSL_PUT_ERROR(X509V3, X509V3_R_UNSUPPORTED_TYPE);
goto err;
}
return gen;
err:
if (!out) {
GENERAL_NAME_free(gen);
}
return NULL;
}
GENERAL_NAME *v2i_GENERAL_NAME_ex(GENERAL_NAME *out,
const X509V3_EXT_METHOD *method,
const X509V3_CTX *ctx, const CONF_VALUE *cnf,
int is_nc) {
const char *name = cnf->name;
const char *value = cnf->value;
if (!value) {
OPENSSL_PUT_ERROR(X509V3, X509V3_R_MISSING_VALUE);
return NULL;
}
int type;
if (x509v3_conf_name_matches(name, "email")) {
type = GEN_EMAIL;
} else if (x509v3_conf_name_matches(name, "URI")) {
type = GEN_URI;
} else if (x509v3_conf_name_matches(name, "DNS")) {
type = GEN_DNS;
} else if (x509v3_conf_name_matches(name, "RID")) {
type = GEN_RID;
} else if (x509v3_conf_name_matches(name, "IP")) {
type = GEN_IPADD;
} else if (x509v3_conf_name_matches(name, "dirName")) {
type = GEN_DIRNAME;
} else if (x509v3_conf_name_matches(name, "otherName")) {
type = GEN_OTHERNAME;
} else {
OPENSSL_PUT_ERROR(X509V3, X509V3_R_UNSUPPORTED_OPTION);
ERR_add_error_data(2, "name=", name);
return NULL;
}
return a2i_GENERAL_NAME(out, method, ctx, type, value, is_nc);
}
static int do_othername(GENERAL_NAME *gen, const char *value,
const X509V3_CTX *ctx) {
const char *semicolon = strchr(value, ';');
if (semicolon == NULL) {
return 0;
}
OTHERNAME *name = OTHERNAME_new();
if (name == NULL) {
return 0;
}
char *objtmp = OPENSSL_strndup(value, semicolon - value);
if (objtmp == NULL) {
goto err;
}
ASN1_OBJECT_free(name->type_id);
name->type_id = OBJ_txt2obj(objtmp, /*dont_search_names=*/0);
OPENSSL_free(objtmp);
if (name->type_id == NULL) {
goto err;
}
ASN1_TYPE_free(name->value);
name->value = ASN1_generate_v3(semicolon + 1, ctx);
if (name->value == NULL) {
goto err;
}
gen->type = GEN_OTHERNAME;
gen->d.otherName = name;
return 1;
err:
OTHERNAME_free(name);
return 0;
}
static int do_dirname(GENERAL_NAME *gen, const char *value,
const X509V3_CTX *ctx) {
int ret = 0;
X509_NAME *nm = X509_NAME_new();
if (nm == NULL) {
goto err;
}
const STACK_OF(CONF_VALUE) *sk = X509V3_get_section(ctx, value);
if (sk == NULL) {
OPENSSL_PUT_ERROR(X509V3, X509V3_R_SECTION_NOT_FOUND);
ERR_add_error_data(2, "section=", value);
goto err;
}
// FIXME: should allow other character types...
if (!X509V3_NAME_from_section(nm, sk, MBSTRING_ASC)) {
goto err;
}
gen->type = GEN_DIRNAME;
gen->d.dirn = nm;
ret = 1;
err:
if (!ret) {
X509_NAME_free(nm);
}
return ret;
}