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613 lines
17 KiB
C
613 lines
17 KiB
C
/*
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* Copyright 1999-2021 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the OpenSSL license (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include <stdio.h>
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#include "internal/cryptlib.h"
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#include "crypto/x509.h"
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#include <openssl/conf.h>
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#include <openssl/x509v3.h>
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#include "ext_dat.h"
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static GENERAL_NAMES *v2i_subject_alt(X509V3_EXT_METHOD *method,
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X509V3_CTX *ctx,
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STACK_OF(CONF_VALUE) *nval);
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static GENERAL_NAMES *v2i_issuer_alt(X509V3_EXT_METHOD *method,
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X509V3_CTX *ctx,
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STACK_OF(CONF_VALUE) *nval);
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static int copy_email(X509V3_CTX *ctx, GENERAL_NAMES *gens, int move_p);
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static int copy_issuer(X509V3_CTX *ctx, GENERAL_NAMES *gens);
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static int do_othername(GENERAL_NAME *gen, const char *value, X509V3_CTX *ctx);
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static int do_dirname(GENERAL_NAME *gen, const char *value, X509V3_CTX *ctx);
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const X509V3_EXT_METHOD v3_alt[3] = {
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{NID_subject_alt_name, 0, ASN1_ITEM_ref(GENERAL_NAMES),
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0, 0, 0, 0,
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0, 0,
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(X509V3_EXT_I2V) i2v_GENERAL_NAMES,
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(X509V3_EXT_V2I)v2i_subject_alt,
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NULL, NULL, NULL},
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{NID_issuer_alt_name, 0, ASN1_ITEM_ref(GENERAL_NAMES),
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0, 0, 0, 0,
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0, 0,
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(X509V3_EXT_I2V) i2v_GENERAL_NAMES,
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(X509V3_EXT_V2I)v2i_issuer_alt,
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NULL, NULL, NULL},
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{NID_certificate_issuer, 0, ASN1_ITEM_ref(GENERAL_NAMES),
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0, 0, 0, 0,
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0, 0,
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(X509V3_EXT_I2V) i2v_GENERAL_NAMES,
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NULL, NULL, NULL, NULL},
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};
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STACK_OF(CONF_VALUE) *i2v_GENERAL_NAMES(X509V3_EXT_METHOD *method,
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GENERAL_NAMES *gens,
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STACK_OF(CONF_VALUE) *ret)
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{
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int i;
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GENERAL_NAME *gen;
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STACK_OF(CONF_VALUE) *tmpret = NULL, *origret = ret;
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for (i = 0; i < sk_GENERAL_NAME_num(gens); i++) {
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gen = sk_GENERAL_NAME_value(gens, i);
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/*
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* i2v_GENERAL_NAME allocates ret if it is NULL. If something goes
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* wrong we need to free the stack - but only if it was empty when we
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* originally entered this function.
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*/
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tmpret = i2v_GENERAL_NAME(method, gen, ret);
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if (tmpret == NULL) {
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if (origret == NULL)
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sk_CONF_VALUE_pop_free(ret, X509V3_conf_free);
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return NULL;
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}
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ret = tmpret;
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}
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if (ret == NULL)
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return sk_CONF_VALUE_new_null();
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return ret;
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}
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STACK_OF(CONF_VALUE) *i2v_GENERAL_NAME(X509V3_EXT_METHOD *method,
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GENERAL_NAME *gen,
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STACK_OF(CONF_VALUE) *ret)
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{
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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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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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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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break;
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case GEN_EMAIL:
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if (!x509v3_add_len_value_uchar("email", gen->d.ia5->data,
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gen->d.ia5->length, &ret))
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return NULL;
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break;
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case GEN_DNS:
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if (!x509v3_add_len_value_uchar("DNS", gen->d.ia5->data,
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gen->d.ia5->length, &ret))
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return NULL;
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break;
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case GEN_URI:
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if (!x509v3_add_len_value_uchar("URI", gen->d.ia5->data,
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gen->d.ia5->length, &ret))
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return NULL;
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break;
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case GEN_DIRNAME:
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if (X509_NAME_oneline(gen->d.dirn, oline, sizeof(oline)) == NULL
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|| !X509V3_add_value("DirName", oline, &ret))
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return NULL;
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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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BIO_snprintf(oline, sizeof(oline), "%d.%d.%d.%d",
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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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BIO_snprintf(htmp, sizeof(htmp), "%X", p[0] << 8 | p[1]);
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p += 2;
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strcat(oline, htmp);
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if (i != 7)
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strcat(oline, ":");
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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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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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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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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, GENERAL_NAME *gen)
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{
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unsigned char *p;
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int i;
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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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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 (i = 0; i < 8; i++) {
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BIO_printf(out, ":%X", p[0] << 8 | p[1]);
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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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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 GENERAL_NAMES *v2i_issuer_alt(X509V3_EXT_METHOD *method,
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X509V3_CTX *ctx,
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STACK_OF(CONF_VALUE) *nval)
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{
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const int num = sk_CONF_VALUE_num(nval);
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GENERAL_NAMES *gens = sk_GENERAL_NAME_new_reserve(NULL, num);
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int i;
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if (gens == NULL) {
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X509V3err(X509V3_F_V2I_ISSUER_ALT, ERR_R_MALLOC_FAILURE);
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sk_GENERAL_NAME_free(gens);
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return NULL;
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}
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for (i = 0; i < num; i++) {
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CONF_VALUE *cnf = sk_CONF_VALUE_value(nval, i);
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if (!name_cmp(cnf->name, "issuer")
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&& cnf->value && strcmp(cnf->value, "copy") == 0) {
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if (!copy_issuer(ctx, gens))
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goto err;
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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)
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goto err;
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sk_GENERAL_NAME_push(gens, gen); /* no failure as it was reserved */
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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(X509V3_CTX *ctx, GENERAL_NAMES *gens)
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{
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GENERAL_NAMES *ialt;
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GENERAL_NAME *gen;
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X509_EXTENSION *ext;
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int i, num;
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if (ctx && (ctx->flags == CTX_TEST))
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return 1;
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if (!ctx || !ctx->issuer_cert) {
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X509V3err(X509V3_F_COPY_ISSUER, X509V3_R_NO_ISSUER_DETAILS);
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goto err;
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}
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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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if ((ext = X509_get_ext(ctx->issuer_cert, i)) == NULL
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|| (ialt = X509V3_EXT_d2i(ext)) == NULL) {
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X509V3err(X509V3_F_COPY_ISSUER, X509V3_R_ISSUER_DECODE_ERROR);
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goto err;
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}
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num = sk_GENERAL_NAME_num(ialt);
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if (!sk_GENERAL_NAME_reserve(gens, num)) {
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X509V3err(X509V3_F_COPY_ISSUER, ERR_R_MALLOC_FAILURE);
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sk_GENERAL_NAME_free(ialt);
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goto err;
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}
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for (i = 0; i < num; i++) {
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gen = sk_GENERAL_NAME_value(ialt, i);
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sk_GENERAL_NAME_push(gens, gen); /* no failure as it was reserved */
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}
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sk_GENERAL_NAME_free(ialt);
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return 1;
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err:
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return 0;
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}
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static GENERAL_NAMES *v2i_subject_alt(X509V3_EXT_METHOD *method,
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X509V3_CTX *ctx,
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STACK_OF(CONF_VALUE) *nval)
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{
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GENERAL_NAMES *gens;
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CONF_VALUE *cnf;
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const int num = sk_CONF_VALUE_num(nval);
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int i;
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gens = sk_GENERAL_NAME_new_reserve(NULL, num);
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if (gens == NULL) {
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X509V3err(X509V3_F_V2I_SUBJECT_ALT, ERR_R_MALLOC_FAILURE);
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sk_GENERAL_NAME_free(gens);
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return NULL;
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}
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for (i = 0; i < num; i++) {
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cnf = sk_CONF_VALUE_value(nval, i);
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if (!name_cmp(cnf->name, "email")
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&& cnf->value && strcmp(cnf->value, "copy") == 0) {
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if (!copy_email(ctx, gens, 0))
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goto err;
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} else if (!name_cmp(cnf->name, "email")
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&& cnf->value && strcmp(cnf->value, "move") == 0) {
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if (!copy_email(ctx, gens, 1))
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goto err;
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} else {
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GENERAL_NAME *gen;
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if ((gen = v2i_GENERAL_NAME(method, ctx, cnf)) == NULL)
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goto err;
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sk_GENERAL_NAME_push(gens, gen); /* no failure as it was reserved */
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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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/*
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* Copy any email addresses in a certificate or request to GENERAL_NAMES
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*/
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static int copy_email(X509V3_CTX *ctx, GENERAL_NAMES *gens, int move_p)
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{
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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 = -1;
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if (ctx != NULL && ctx->flags == CTX_TEST)
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return 1;
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if (ctx == NULL
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|| (ctx->subject_cert == NULL && ctx->subject_req == NULL)) {
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X509V3err(X509V3_F_COPY_EMAIL, 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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/* Now add any email address(es) to STACK */
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while ((i = X509_NAME_get_index_by_NID(nm,
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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 == NULL || (gen = GENERAL_NAME_new()) == NULL) {
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X509V3err(X509V3_F_COPY_EMAIL, ERR_R_MALLOC_FAILURE);
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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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X509V3err(X509V3_F_COPY_EMAIL, ERR_R_MALLOC_FAILURE);
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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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X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval)
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{
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GENERAL_NAME *gen;
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GENERAL_NAMES *gens;
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CONF_VALUE *cnf;
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const int num = sk_CONF_VALUE_num(nval);
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int i;
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gens = sk_GENERAL_NAME_new_reserve(NULL, num);
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if (gens == NULL) {
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X509V3err(X509V3_F_V2I_GENERAL_NAMES, ERR_R_MALLOC_FAILURE);
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sk_GENERAL_NAME_free(gens);
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return NULL;
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}
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for (i = 0; i < num; i++) {
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cnf = sk_CONF_VALUE_value(nval, i);
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if ((gen = v2i_GENERAL_NAME(method, ctx, cnf)) == NULL)
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goto err;
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sk_GENERAL_NAME_push(gens, gen); /* no failure as it was reserved */
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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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X509V3_CTX *ctx, CONF_VALUE *cnf)
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{
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return v2i_GENERAL_NAME_ex(NULL, method, ctx, cnf, 0);
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}
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GENERAL_NAME *a2i_GENERAL_NAME(GENERAL_NAME *out,
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const X509V3_EXT_METHOD *method,
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X509V3_CTX *ctx, int gen_type, const char *value,
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int is_nc)
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{
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char is_string = 0;
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GENERAL_NAME *gen = NULL;
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if (!value) {
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X509V3err(X509V3_F_A2I_GENERAL_NAME, X509V3_R_MISSING_VALUE);
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return NULL;
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}
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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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X509V3err(X509V3_F_A2I_GENERAL_NAME, ERR_R_MALLOC_FAILURE);
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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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is_string = 1;
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break;
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case GEN_RID:
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{
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ASN1_OBJECT *obj;
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if ((obj = OBJ_txt2obj(value, 0)) == NULL) {
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X509V3err(X509V3_F_A2I_GENERAL_NAME, 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->d.rid = obj;
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}
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break;
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case 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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if (gen->d.ip == NULL) {
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X509V3err(X509V3_F_A2I_GENERAL_NAME, 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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case GEN_DIRNAME:
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if (!do_dirname(gen, value, ctx)) {
|
|
X509V3err(X509V3_F_A2I_GENERAL_NAME, X509V3_R_DIRNAME_ERROR);
|
|
goto err;
|
|
}
|
|
break;
|
|
|
|
case GEN_OTHERNAME:
|
|
if (!do_othername(gen, value, ctx)) {
|
|
X509V3err(X509V3_F_A2I_GENERAL_NAME, X509V3_R_OTHERNAME_ERROR);
|
|
goto err;
|
|
}
|
|
break;
|
|
default:
|
|
X509V3err(X509V3_F_A2I_GENERAL_NAME, X509V3_R_UNSUPPORTED_TYPE);
|
|
goto err;
|
|
}
|
|
|
|
if (is_string) {
|
|
if ((gen->d.ia5 = ASN1_IA5STRING_new()) == NULL ||
|
|
!ASN1_STRING_set(gen->d.ia5, (unsigned char *)value,
|
|
strlen(value))) {
|
|
X509V3err(X509V3_F_A2I_GENERAL_NAME, ERR_R_MALLOC_FAILURE);
|
|
goto err;
|
|
}
|
|
}
|
|
|
|
gen->type = gen_type;
|
|
|
|
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,
|
|
X509V3_CTX *ctx, CONF_VALUE *cnf, int is_nc)
|
|
{
|
|
int type;
|
|
|
|
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 (!name_cmp(name, "email"))
|
|
type = GEN_EMAIL;
|
|
else if (!name_cmp(name, "URI"))
|
|
type = GEN_URI;
|
|
else if (!name_cmp(name, "DNS"))
|
|
type = GEN_DNS;
|
|
else if (!name_cmp(name, "RID"))
|
|
type = GEN_RID;
|
|
else if (!name_cmp(name, "IP"))
|
|
type = GEN_IPADD;
|
|
else if (!name_cmp(name, "dirName"))
|
|
type = GEN_DIRNAME;
|
|
else if (!name_cmp(name, "otherName"))
|
|
type = GEN_OTHERNAME;
|
|
else {
|
|
X509V3err(X509V3_F_V2I_GENERAL_NAME_EX, 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, X509V3_CTX *ctx)
|
|
{
|
|
char *objtmp = NULL, *p;
|
|
int objlen;
|
|
|
|
if ((p = strchr(value, ';')) == NULL)
|
|
return 0;
|
|
if ((gen->d.otherName = OTHERNAME_new()) == NULL)
|
|
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)) == NULL)
|
|
return 0;
|
|
objlen = p - value;
|
|
objtmp = OPENSSL_strndup(value, objlen);
|
|
if (objtmp == NULL)
|
|
return 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, const char *value, X509V3_CTX *ctx)
|
|
{
|
|
int ret = 0;
|
|
STACK_OF(CONF_VALUE) *sk = NULL;
|
|
X509_NAME *nm;
|
|
|
|
if ((nm = X509_NAME_new()) == NULL)
|
|
goto err;
|
|
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);
|
|
goto err;
|
|
}
|
|
/* FIXME: should allow other character types... */
|
|
ret = X509V3_NAME_from_section(nm, sk, MBSTRING_ASC);
|
|
if (!ret)
|
|
goto err;
|
|
gen->d.dirn = nm;
|
|
|
|
err:
|
|
if (ret == 0)
|
|
X509_NAME_free(nm);
|
|
X509V3_section_free(ctx, sk);
|
|
return ret;
|
|
}
|