v3_akey.c
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上传日期:2020-08-09
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- /* v3_akey.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/asn1.h>
- #include <openssl/asn1t.h>
- #include <openssl/x509v3.h>
- static STACK_OF(CONF_VALUE) *i2v_AUTHORITY_KEYID(X509V3_EXT_METHOD *method,
- AUTHORITY_KEYID *akeyid, STACK_OF(CONF_VALUE) *extlist);
- static AUTHORITY_KEYID *v2i_AUTHORITY_KEYID(X509V3_EXT_METHOD *method,
- X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *values);
- X509V3_EXT_METHOD v3_akey_id =
- {
- NID_authority_key_identifier,
- X509V3_EXT_MULTILINE, ASN1_ITEM_ref(AUTHORITY_KEYID),
- 0,0,0,0,
- 0,0,
- (X509V3_EXT_I2V)i2v_AUTHORITY_KEYID,
- (X509V3_EXT_V2I)v2i_AUTHORITY_KEYID,
- 0,0,
- NULL
- };
- static STACK_OF(CONF_VALUE) *i2v_AUTHORITY_KEYID(X509V3_EXT_METHOD *method,
- AUTHORITY_KEYID *akeyid, STACK_OF(CONF_VALUE) *extlist)
- {
- char *tmp;
- if(akeyid->keyid) {
- tmp = hex_to_string(akeyid->keyid->data, akeyid->keyid->length);
- X509V3_add_value("keyid", tmp, &extlist);
- OPENSSL_free(tmp);
- }
- if(akeyid->issuer)
- extlist = i2v_GENERAL_NAMES(NULL, akeyid->issuer, extlist);
- if(akeyid->serial) {
- tmp = hex_to_string(akeyid->serial->data,
- akeyid->serial->length);
- X509V3_add_value("serial", tmp, &extlist);
- OPENSSL_free(tmp);
- }
- return extlist;
- }
- /* Currently two options:
- * keyid: use the issuers subject keyid, the value 'always' means its is
- * an error if the issuer certificate doesn't have a key id.
- * issuer: use the issuers cert issuer and serial number. The default is
- * to only use this if keyid is not present. With the option 'always'
- * this is always included.
- */
- static AUTHORITY_KEYID *v2i_AUTHORITY_KEYID(X509V3_EXT_METHOD *method,
- X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *values)
- {
- char keyid=0, issuer=0;
- int i;
- CONF_VALUE *cnf;
- ASN1_OCTET_STRING *ikeyid = NULL;
- X509_NAME *isname = NULL;
- GENERAL_NAMES * gens = NULL;
- GENERAL_NAME *gen = NULL;
- ASN1_INTEGER *serial = NULL;
- X509_EXTENSION *ext;
- X509 *cert;
- AUTHORITY_KEYID *akeyid;
- for(i = 0; i < sk_CONF_VALUE_num(values); i++)
- {
- cnf = sk_CONF_VALUE_value(values, i);
- if(!strcmp(cnf->name, "keyid"))
- {
- keyid = 1;
- if(cnf->value && !strcmp(cnf->value, "always"))
- keyid = 2;
- }
- else if(!strcmp(cnf->name, "issuer"))
- {
- issuer = 1;
- if(cnf->value && !strcmp(cnf->value, "always"))
- issuer = 2;
- }
- else
- {
- X509V3err(X509V3_F_V2I_AUTHORITY_KEYID,X509V3_R_UNKNOWN_OPTION);
- ERR_add_error_data(2, "name=", cnf->name);
- return NULL;
- }
- }
- if(!ctx || !ctx->issuer_cert)
- {
- if(ctx && (ctx->flags==CTX_TEST))
- return AUTHORITY_KEYID_new();
- X509V3err(X509V3_F_V2I_AUTHORITY_KEYID,X509V3_R_NO_ISSUER_CERTIFICATE);
- return NULL;
- }
- cert = ctx->issuer_cert;
- if(keyid)
- {
- i = X509_get_ext_by_NID(cert, NID_subject_key_identifier, -1);
- if((i >= 0) && (ext = X509_get_ext(cert, i)))
- ikeyid = X509V3_EXT_d2i(ext);
- if(keyid==2 && !ikeyid)
- {
- X509V3err(X509V3_F_V2I_AUTHORITY_KEYID,X509V3_R_UNABLE_TO_GET_ISSUER_KEYID);
- return NULL;
- }
- }
- if((issuer && !ikeyid) || (issuer == 2))
- {
- isname = X509_NAME_dup(X509_get_issuer_name(cert));
- serial = M_ASN1_INTEGER_dup(X509_get_serialNumber(cert));
- if(!isname || !serial)
- {
- X509V3err(X509V3_F_V2I_AUTHORITY_KEYID,X509V3_R_UNABLE_TO_GET_ISSUER_DETAILS);
- goto err;
- }
- }
- if(!(akeyid = AUTHORITY_KEYID_new())) goto err;
- if(isname)
- {
- if(!(gens = sk_GENERAL_NAME_new_null())
- || !(gen = GENERAL_NAME_new())
- || !sk_GENERAL_NAME_push(gens, gen))
- {
- X509V3err(X509V3_F_V2I_AUTHORITY_KEYID,ERR_R_MALLOC_FAILURE);
- goto err;
- }
- gen->type = GEN_DIRNAME;
- gen->d.dirn = isname;
- }
- akeyid->issuer = gens;
- akeyid->serial = serial;
- akeyid->keyid = ikeyid;
- return akeyid;
- err:
- X509_NAME_free(isname);
- M_ASN1_INTEGER_free(serial);
- M_ASN1_OCTET_STRING_free(ikeyid);
- return NULL;
- }