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/*
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* Copyright 1999-2016 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 <openssl/conf.h>
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#include <openssl/asn1.h>
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#include <openssl/asn1t.h>
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#include <openssl/x509v3.h>
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#include "ext_dat.h"
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static STACK_OF(CONF_VALUE) *i2v_AUTHORITY_KEYID(X509V3_EXT_METHOD *method,
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AUTHORITY_KEYID *akeyid,
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STACK_OF(CONF_VALUE)
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*extlist);
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static AUTHORITY_KEYID *v2i_AUTHORITY_KEYID(X509V3_EXT_METHOD *method,
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X509V3_CTX *ctx,
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STACK_OF(CONF_VALUE) *values);
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const X509V3_EXT_METHOD v3_akey_id = {
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NID_authority_key_identifier,
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X509V3_EXT_MULTILINE, ASN1_ITEM_ref(AUTHORITY_KEYID),
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0, 0, 0, 0,
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0, 0,
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(X509V3_EXT_I2V) i2v_AUTHORITY_KEYID,
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(X509V3_EXT_V2I)v2i_AUTHORITY_KEYID,
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0, 0,
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NULL
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};
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static STACK_OF(CONF_VALUE) *i2v_AUTHORITY_KEYID(X509V3_EXT_METHOD *method,
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AUTHORITY_KEYID *akeyid,
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STACK_OF(CONF_VALUE)
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*extlist)
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{
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char *tmp;
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if (akeyid->keyid) {
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tmp = OPENSSL_buf2hexstr(akeyid->keyid->data, akeyid->keyid->length);
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X509V3_add_value("keyid", tmp, &extlist);
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OPENSSL_free(tmp);
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}
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if (akeyid->issuer)
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extlist = i2v_GENERAL_NAMES(NULL, akeyid->issuer, extlist);
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if (akeyid->serial) {
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tmp = OPENSSL_buf2hexstr(akeyid->serial->data, akeyid->serial->length);
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X509V3_add_value("serial", tmp, &extlist);
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OPENSSL_free(tmp);
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}
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return extlist;
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}
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/*-
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* Currently two options:
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* keyid: use the issuers subject keyid, the value 'always' means its is
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* an error if the issuer certificate doesn't have a key id.
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* issuer: use the issuers cert issuer and serial number. The default is
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* to only use this if keyid is not present. With the option 'always'
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* this is always included.
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*/
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static AUTHORITY_KEYID *v2i_AUTHORITY_KEYID(X509V3_EXT_METHOD *method,
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X509V3_CTX *ctx,
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STACK_OF(CONF_VALUE) *values)
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{
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char keyid = 0, issuer = 0;
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int i;
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CONF_VALUE *cnf;
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ASN1_OCTET_STRING *ikeyid = NULL;
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X509_NAME *isname = NULL;
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GENERAL_NAMES *gens = NULL;
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GENERAL_NAME *gen = NULL;
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ASN1_INTEGER *serial = NULL;
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X509_EXTENSION *ext;
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X509 *cert;
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AUTHORITY_KEYID *akeyid;
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for (i = 0; i < sk_CONF_VALUE_num(values); i++) {
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cnf = sk_CONF_VALUE_value(values, i);
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if (strcmp(cnf->name, "keyid") == 0) {
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keyid = 1;
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if (cnf->value && strcmp(cnf->value, "always") == 0)
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keyid = 2;
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} else if (strcmp(cnf->name, "issuer") == 0) {
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issuer = 1;
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if (cnf->value && strcmp(cnf->value, "always") == 0)
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issuer = 2;
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} else {
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X509V3err(X509V3_F_V2I_AUTHORITY_KEYID, X509V3_R_UNKNOWN_OPTION);
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ERR_add_error_data(2, "name=", cnf->name);
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return NULL;
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}
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}
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if (!ctx || !ctx->issuer_cert) {
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if (ctx && (ctx->flags == CTX_TEST))
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return AUTHORITY_KEYID_new();
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X509V3err(X509V3_F_V2I_AUTHORITY_KEYID,
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X509V3_R_NO_ISSUER_CERTIFICATE);
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return NULL;
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}
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cert = ctx->issuer_cert;
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if (keyid) {
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i = X509_get_ext_by_NID(cert, NID_subject_key_identifier, -1);
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if ((i >= 0) && (ext = X509_get_ext(cert, i)))
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ikeyid = X509V3_EXT_d2i(ext);
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if (keyid == 2 && !ikeyid) {
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X509V3err(X509V3_F_V2I_AUTHORITY_KEYID,
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X509V3_R_UNABLE_TO_GET_ISSUER_KEYID);
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return NULL;
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}
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}
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if ((issuer && !ikeyid) || (issuer == 2)) {
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isname = X509_NAME_dup(X509_get_issuer_name(cert));
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serial = ASN1_INTEGER_dup(X509_get_serialNumber(cert));
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if (!isname || !serial) {
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X509V3err(X509V3_F_V2I_AUTHORITY_KEYID,
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X509V3_R_UNABLE_TO_GET_ISSUER_DETAILS);
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goto err;
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}
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}
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if ((akeyid = AUTHORITY_KEYID_new()) == NULL)
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goto err;
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if (isname) {
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if ((gens = sk_GENERAL_NAME_new_null()) == NULL
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|| (gen = GENERAL_NAME_new()) == NULL
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|| !sk_GENERAL_NAME_push(gens, gen)) {
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X509V3err(X509V3_F_V2I_AUTHORITY_KEYID, ERR_R_MALLOC_FAILURE);
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goto err;
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}
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gen->type = GEN_DIRNAME;
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gen->d.dirn = isname;
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}
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akeyid->issuer = gens;
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gen = NULL;
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gens = NULL;
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akeyid->serial = serial;
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akeyid->keyid = ikeyid;
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return akeyid;
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err:
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sk_GENERAL_NAME_free(gens);
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GENERAL_NAME_free(gen);
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X509_NAME_free(isname);
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ASN1_INTEGER_free(serial);
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ASN1_OCTET_STRING_free(ikeyid);
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return NULL;
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}
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