583 lines
16 KiB
C
583 lines
16 KiB
C
// Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project.
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// Copyright (c) 1999-2003 The OpenSSL Project. All rights reserved.
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// SPDX-License-Identifier: Apache-2.0
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#include <stdio.h>
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#include <string.h>
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#include <openssl/conf.h>
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#include <openssl/err.h>
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#include <openssl/mem.h>
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#include <openssl/obj.h>
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#include <openssl/x509.h>
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#include "internal.h"
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static void *v2i_subject_alt(const X509V3_EXT_METHOD *method,
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const X509V3_CTX *ctx,
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const STACK_OF(CONF_VALUE) *nval);
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static void *v2i_issuer_alt(const X509V3_EXT_METHOD *method,
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const X509V3_CTX *ctx,
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const STACK_OF(CONF_VALUE) *nval);
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static int copy_email(const X509V3_CTX *ctx, GENERAL_NAMES *gens, int move_p);
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static int copy_issuer(const X509V3_CTX *ctx, GENERAL_NAMES *gens);
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static int do_othername(GENERAL_NAME *gen, const char *value,
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const X509V3_CTX *ctx);
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static int do_dirname(GENERAL_NAME *gen, const char *value,
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const X509V3_CTX *ctx);
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static STACK_OF(CONF_VALUE) *i2v_GENERAL_NAMES_cb(
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const X509V3_EXT_METHOD *method, void *ext, STACK_OF(CONF_VALUE) *ret) {
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return i2v_GENERAL_NAMES(method, ext, ret);
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}
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const X509V3_EXT_METHOD v3_alt[] = {
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{NID_subject_alt_name, 0, ASN1_ITEM_ref(GENERAL_NAMES), 0, 0, 0, 0, 0, 0,
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i2v_GENERAL_NAMES_cb, v2i_subject_alt, NULL, NULL, NULL},
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{NID_issuer_alt_name, 0, ASN1_ITEM_ref(GENERAL_NAMES), 0, 0, 0, 0, 0, 0,
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i2v_GENERAL_NAMES_cb, v2i_issuer_alt, NULL, NULL, NULL},
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{NID_certificate_issuer, 0, ASN1_ITEM_ref(GENERAL_NAMES), 0, 0, 0, 0, 0, 0,
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i2v_GENERAL_NAMES_cb, NULL, NULL, NULL, NULL},
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};
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STACK_OF(CONF_VALUE) *i2v_GENERAL_NAMES(const X509V3_EXT_METHOD *method,
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const GENERAL_NAMES *gens,
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STACK_OF(CONF_VALUE) *ret) {
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int ret_was_null = ret == NULL;
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for (size_t i = 0; i < sk_GENERAL_NAME_num(gens); i++) {
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const GENERAL_NAME *gen = sk_GENERAL_NAME_value(gens, i);
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STACK_OF(CONF_VALUE) *tmp = i2v_GENERAL_NAME(method, gen, ret);
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if (tmp == NULL) {
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if (ret_was_null) {
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sk_CONF_VALUE_pop_free(ret, X509V3_conf_free);
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}
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return NULL;
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}
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ret = tmp;
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}
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if (!ret) {
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return sk_CONF_VALUE_new_null();
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}
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return ret;
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}
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STACK_OF(CONF_VALUE) *i2v_GENERAL_NAME(const X509V3_EXT_METHOD *method,
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const GENERAL_NAME *gen,
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STACK_OF(CONF_VALUE) *ret) {
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// Note the error-handling for this function relies on there being at most
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// one |X509V3_add_value| call. If there were two and the second failed, we
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// would need to sometimes free the first call's result.
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unsigned char *p;
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char oline[256], htmp[5];
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int i;
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switch (gen->type) {
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case GEN_OTHERNAME:
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if (!X509V3_add_value("othername", "<unsupported>", &ret)) {
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return NULL;
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}
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break;
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case GEN_X400:
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if (!X509V3_add_value("X400Name", "<unsupported>", &ret)) {
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return NULL;
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}
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break;
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case GEN_EDIPARTY:
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if (!X509V3_add_value("EdiPartyName", "<unsupported>", &ret)) {
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return NULL;
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}
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break;
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case GEN_EMAIL:
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if (!x509V3_add_value_asn1_string("email", gen->d.ia5, &ret)) {
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return NULL;
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}
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break;
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case GEN_DNS:
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if (!x509V3_add_value_asn1_string("DNS", gen->d.ia5, &ret)) {
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return NULL;
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}
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break;
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case GEN_URI:
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if (!x509V3_add_value_asn1_string("URI", gen->d.ia5, &ret)) {
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return NULL;
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}
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break;
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case GEN_DIRNAME:
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if (X509_NAME_oneline(gen->d.dirn, oline, 256) == NULL ||
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!X509V3_add_value("DirName", oline, &ret)) {
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return NULL;
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}
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break;
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case GEN_IPADD:
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p = gen->d.ip->data;
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if (gen->d.ip->length == 4) {
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snprintf(oline, sizeof(oline), "%d.%d.%d.%d", p[0], p[1], p[2], p[3]);
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} else if (gen->d.ip->length == 16) {
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oline[0] = 0;
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for (i = 0; i < 8; i++) {
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uint16_t v = ((uint16_t)p[0] << 8) | p[1];
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snprintf(htmp, sizeof(htmp), "%X", v);
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p += 2;
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OPENSSL_strlcat(oline, htmp, sizeof(oline));
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if (i != 7) {
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OPENSSL_strlcat(oline, ":", sizeof(oline));
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}
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}
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} else {
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if (!X509V3_add_value("IP Address", "<invalid>", &ret)) {
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return NULL;
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}
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break;
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}
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if (!X509V3_add_value("IP Address", oline, &ret)) {
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return NULL;
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}
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break;
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case GEN_RID:
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i2t_ASN1_OBJECT(oline, 256, gen->d.rid);
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if (!X509V3_add_value("Registered ID", oline, &ret)) {
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return NULL;
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}
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break;
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}
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return ret;
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}
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int GENERAL_NAME_print(BIO *out, const GENERAL_NAME *gen) {
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switch (gen->type) {
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case GEN_OTHERNAME:
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BIO_printf(out, "othername:<unsupported>");
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break;
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case GEN_X400:
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BIO_printf(out, "X400Name:<unsupported>");
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break;
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case GEN_EDIPARTY:
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// Maybe fix this: it is supported now
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BIO_printf(out, "EdiPartyName:<unsupported>");
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break;
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case GEN_EMAIL:
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BIO_printf(out, "email:");
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ASN1_STRING_print(out, gen->d.ia5);
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break;
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case GEN_DNS:
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BIO_printf(out, "DNS:");
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ASN1_STRING_print(out, gen->d.ia5);
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break;
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case GEN_URI:
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BIO_printf(out, "URI:");
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ASN1_STRING_print(out, gen->d.ia5);
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break;
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case GEN_DIRNAME:
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BIO_printf(out, "DirName: ");
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X509_NAME_print_ex(out, gen->d.dirn, 0, XN_FLAG_ONELINE);
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break;
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case GEN_IPADD: {
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const unsigned char *p = gen->d.ip->data;
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if (gen->d.ip->length == 4) {
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BIO_printf(out, "IP Address:%d.%d.%d.%d", p[0], p[1], p[2], p[3]);
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} else if (gen->d.ip->length == 16) {
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BIO_printf(out, "IP Address");
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for (int i = 0; i < 8; i++) {
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uint16_t v = ((uint16_t)p[0] << 8) | p[1];
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BIO_printf(out, ":%X", v);
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p += 2;
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}
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BIO_puts(out, "\n");
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} else {
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BIO_printf(out, "IP Address:<invalid>");
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break;
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}
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break;
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}
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case GEN_RID:
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BIO_printf(out, "Registered ID");
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i2a_ASN1_OBJECT(out, gen->d.rid);
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break;
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}
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return 1;
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}
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static void *v2i_issuer_alt(const X509V3_EXT_METHOD *method,
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const X509V3_CTX *ctx,
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const STACK_OF(CONF_VALUE) *nval) {
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GENERAL_NAMES *gens = sk_GENERAL_NAME_new_null();
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if (gens == NULL) {
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return NULL;
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}
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for (size_t i = 0; i < sk_CONF_VALUE_num(nval); i++) {
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const CONF_VALUE *cnf = sk_CONF_VALUE_value(nval, i);
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if (x509v3_conf_name_matches(cnf->name, "issuer") && cnf->value &&
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!strcmp(cnf->value, "copy")) {
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if (!copy_issuer(ctx, gens)) {
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goto err;
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}
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} else {
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GENERAL_NAME *gen = v2i_GENERAL_NAME(method, ctx, cnf);
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if (gen == NULL || !sk_GENERAL_NAME_push(gens, gen)) {
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GENERAL_NAME_free(gen);
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goto err;
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}
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}
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}
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return gens;
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err:
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sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free);
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return NULL;
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}
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// Append subject altname of issuer to issuer alt name of subject
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static int copy_issuer(const X509V3_CTX *ctx, GENERAL_NAMES *gens) {
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if (ctx && (ctx->flags == X509V3_CTX_TEST)) {
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return 1;
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}
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if (!ctx || !ctx->issuer_cert) {
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OPENSSL_PUT_ERROR(X509V3, X509V3_R_NO_ISSUER_DETAILS);
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return 0;
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}
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int i = X509_get_ext_by_NID(ctx->issuer_cert, NID_subject_alt_name, -1);
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if (i < 0) {
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return 1;
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}
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int ret = 0;
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GENERAL_NAMES *ialt = NULL;
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X509_EXTENSION *ext;
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if (!(ext = X509_get_ext(ctx->issuer_cert, i)) ||
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!(ialt = X509V3_EXT_d2i(ext))) {
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OPENSSL_PUT_ERROR(X509V3, X509V3_R_ISSUER_DECODE_ERROR);
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goto err;
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}
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for (size_t j = 0; j < sk_GENERAL_NAME_num(ialt); j++) {
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GENERAL_NAME *gen = sk_GENERAL_NAME_value(ialt, j);
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if (!sk_GENERAL_NAME_push(gens, gen)) {
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goto err;
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}
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// Ownership of |gen| has moved from |ialt| to |gens|.
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sk_GENERAL_NAME_set(ialt, j, NULL);
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}
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ret = 1;
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err:
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GENERAL_NAMES_free(ialt);
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return ret;
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}
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static void *v2i_subject_alt(const X509V3_EXT_METHOD *method,
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const X509V3_CTX *ctx,
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const STACK_OF(CONF_VALUE) *nval) {
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GENERAL_NAMES *gens = sk_GENERAL_NAME_new_null();
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if (gens == NULL) {
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return NULL;
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}
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for (size_t i = 0; i < sk_CONF_VALUE_num(nval); i++) {
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const CONF_VALUE *cnf = sk_CONF_VALUE_value(nval, i);
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if (x509v3_conf_name_matches(cnf->name, "email") && cnf->value &&
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!strcmp(cnf->value, "copy")) {
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if (!copy_email(ctx, gens, 0)) {
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goto err;
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}
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} else if (x509v3_conf_name_matches(cnf->name, "email") && cnf->value &&
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!strcmp(cnf->value, "move")) {
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if (!copy_email(ctx, gens, 1)) {
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goto err;
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}
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} else {
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GENERAL_NAME *gen = v2i_GENERAL_NAME(method, ctx, cnf);
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if (gen == NULL || !sk_GENERAL_NAME_push(gens, gen)) {
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GENERAL_NAME_free(gen);
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goto err;
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}
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}
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}
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return gens;
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err:
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sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free);
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return NULL;
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}
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// Copy any email addresses in a certificate or request to GENERAL_NAMES
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static int copy_email(const X509V3_CTX *ctx, GENERAL_NAMES *gens, int move_p) {
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X509_NAME *nm;
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ASN1_IA5STRING *email = NULL;
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X509_NAME_ENTRY *ne;
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GENERAL_NAME *gen = NULL;
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int i;
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if (ctx != NULL && ctx->flags == X509V3_CTX_TEST) {
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return 1;
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}
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if (!ctx || (!ctx->subject_cert && !ctx->subject_req)) {
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OPENSSL_PUT_ERROR(X509V3, X509V3_R_NO_SUBJECT_DETAILS);
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goto err;
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}
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// Find the subject name
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if (ctx->subject_cert) {
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nm = X509_get_subject_name(ctx->subject_cert);
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} else {
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nm = X509_REQ_get_subject_name(ctx->subject_req);
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}
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// Now add any email address(es) to STACK
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i = -1;
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while ((i = X509_NAME_get_index_by_NID(nm, NID_pkcs9_emailAddress, i)) >= 0) {
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ne = X509_NAME_get_entry(nm, i);
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email = ASN1_STRING_dup(X509_NAME_ENTRY_get_data(ne));
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if (move_p) {
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X509_NAME_delete_entry(nm, i);
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X509_NAME_ENTRY_free(ne);
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i--;
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}
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if (!email || !(gen = GENERAL_NAME_new())) {
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goto err;
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}
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gen->d.ia5 = email;
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email = NULL;
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gen->type = GEN_EMAIL;
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if (!sk_GENERAL_NAME_push(gens, gen)) {
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goto err;
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}
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gen = NULL;
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}
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return 1;
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err:
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GENERAL_NAME_free(gen);
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ASN1_IA5STRING_free(email);
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return 0;
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}
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GENERAL_NAMES *v2i_GENERAL_NAMES(const X509V3_EXT_METHOD *method,
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const X509V3_CTX *ctx,
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const STACK_OF(CONF_VALUE) *nval) {
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GENERAL_NAMES *gens = sk_GENERAL_NAME_new_null();
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if (gens == NULL) {
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return NULL;
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}
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for (size_t i = 0; i < sk_CONF_VALUE_num(nval); i++) {
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const CONF_VALUE *cnf = sk_CONF_VALUE_value(nval, i);
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GENERAL_NAME *gen = v2i_GENERAL_NAME(method, ctx, cnf);
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if (gen == NULL || !sk_GENERAL_NAME_push(gens, gen)) {
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GENERAL_NAME_free(gen);
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goto err;
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}
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}
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return gens;
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err:
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sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free);
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return NULL;
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}
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GENERAL_NAME *v2i_GENERAL_NAME(const X509V3_EXT_METHOD *method,
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const X509V3_CTX *ctx, const CONF_VALUE *cnf) {
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return v2i_GENERAL_NAME_ex(NULL, method, ctx, cnf, 0);
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}
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static GENERAL_NAME *a2i_GENERAL_NAME(GENERAL_NAME *out,
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const X509V3_EXT_METHOD *method,
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const X509V3_CTX *ctx, int gen_type,
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const char *value, int is_nc) {
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if (!value) {
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OPENSSL_PUT_ERROR(X509V3, X509V3_R_MISSING_VALUE);
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return NULL;
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}
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|
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GENERAL_NAME *gen = NULL;
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if (out) {
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gen = out;
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} else {
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gen = GENERAL_NAME_new();
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if (gen == NULL) {
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return NULL;
|
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}
|
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}
|
|
|
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switch (gen_type) {
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case GEN_URI:
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case GEN_EMAIL:
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case GEN_DNS: {
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ASN1_IA5STRING *str = ASN1_IA5STRING_new();
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if (str == NULL || !ASN1_STRING_set(str, value, strlen(value))) {
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ASN1_STRING_free(str);
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goto err;
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}
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gen->type = gen_type;
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gen->d.ia5 = str;
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break;
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}
|
|
|
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case GEN_RID: {
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ASN1_OBJECT *obj;
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if (!(obj = OBJ_txt2obj(value, 0))) {
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OPENSSL_PUT_ERROR(X509V3, X509V3_R_BAD_OBJECT);
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ERR_add_error_data(2, "value=", value);
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goto err;
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}
|
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gen->type = GEN_RID;
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gen->d.rid = obj;
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break;
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}
|
|
|
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case GEN_IPADD:
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gen->type = GEN_IPADD;
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if (is_nc) {
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gen->d.ip = a2i_IPADDRESS_NC(value);
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} else {
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gen->d.ip = a2i_IPADDRESS(value);
|
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}
|
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if (gen->d.ip == NULL) {
|
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OPENSSL_PUT_ERROR(X509V3, X509V3_R_BAD_IP_ADDRESS);
|
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ERR_add_error_data(2, "value=", value);
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goto err;
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}
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break;
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|
|
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case GEN_DIRNAME:
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if (!do_dirname(gen, value, ctx)) {
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OPENSSL_PUT_ERROR(X509V3, X509V3_R_DIRNAME_ERROR);
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goto err;
|
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}
|
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break;
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|
|
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case GEN_OTHERNAME:
|
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if (!do_othername(gen, value, ctx)) {
|
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OPENSSL_PUT_ERROR(X509V3, X509V3_R_OTHERNAME_ERROR);
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goto err;
|
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}
|
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break;
|
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default:
|
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OPENSSL_PUT_ERROR(X509V3, X509V3_R_UNSUPPORTED_TYPE);
|
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goto err;
|
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}
|
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|
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return gen;
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|
|
err:
|
|
if (!out) {
|
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GENERAL_NAME_free(gen);
|
|
}
|
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return NULL;
|
|
}
|
|
|
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GENERAL_NAME *v2i_GENERAL_NAME_ex(GENERAL_NAME *out,
|
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const X509V3_EXT_METHOD *method,
|
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const X509V3_CTX *ctx, const CONF_VALUE *cnf,
|
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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;
|
|
}
|