/* ocsp.c */
/* Written by Dr Stephen N Henson ([email protected]) for the OpenSSL
* project 2000.
*/
/* ====================================================================
* 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
* [email protected].
*
* 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
* ([email protected]). This product includes software written by Tim
* Hudson ([email protected]).
*
*/
#ifndef OPENSSL_NO_OCSP
#include <stdio.h>
#include <string.h>
#include "apps.h"
#include <openssl/pem.h>
#include <openssl/ocsp.h>
#include <openssl/err.h>
#include <openssl/ssl.h>
#include <openssl/bn.h>
/* Maximum leeway in validity period: default 5 minutes */
#define MAX_VALIDITY_PERIOD (5 * 60)
static int add_ocsp_cert(OCSP_REQUEST **req, X509 *cert, X509 *issuer,
STACK_OF(OCSP_CERTID) *ids);
static int add_ocsp_serial(OCSP_REQUEST **req, char *serial, X509 *issuer,
STACK_OF(OCSP_CERTID) *ids);
static int print_ocsp_summary(BIO *out, OCSP_BASICRESP *bs, OCSP_REQUEST *req,
STACK *names, STACK_OF(OCSP_CERTID) *ids,
long nsec, long maxage);
static int make_ocsp_response(OCSP_RESPONSE **resp, OCSP_REQUEST *req, CA_DB *db,
X509 *ca, X509 *rcert, EVP_PKEY *rkey,
STACK_OF(X509) *rother, unsigned long flags,
int nmin, int ndays);
static char **lookup_serial(CA_DB *db, ASN1_INTEGER *ser);
static BIO *init_responder(char *port);
static int do_responder(OCSP_REQUEST **preq, BIO **pcbio, BIO *acbio, char *port);
static int send_ocsp_response(BIO *cbio, OCSP_RESPONSE *resp);
#undef PROG
#define PROG ocsp_main
int MAIN(int, char **);
int MAIN(int argc, char **argv)
{
ENGINE *e = NULL;
char **args;
char *host = NULL, *port = NULL, *path = "/";
char *reqin = NULL, *respin = NULL;
char *reqout = NULL, *respout = NULL;
char *signfile = NULL, *keyfile = NULL;
char *rsignfile = NULL, *rkeyfile = NULL;
char *outfile = NULL;
int add_nonce = 1, noverify = 0, use_ssl = -1;
OCSP_REQUEST *req = NULL;
OCSP_RESPONSE *resp = NULL;
OCSP_BASICRESP *bs = NULL;
X509 *issuer = NULL, *cert = NULL;
X509 *signer = NULL, *rsigner = NULL;
EVP_PKEY *key = NULL, *rkey = NULL;
BIO *acbio = NULL, *cbio = NULL;
BIO *derbio = NULL;
BIO *out = NULL;
int req_text = 0, resp_text = 0;
long nsec = MAX_VALIDITY_PERIOD, maxage = -1;
char *CAfile = NULL, *CApath = NULL;
X509_STORE *store = NULL;
SSL_CTX *ctx = NULL;
STACK_OF(X509) *sign_other = NULL, *verify_other = NULL, *rother = NULL;
char *sign_certfile = NULL, *verify_certfile = NULL, *rcertfile = NULL;
unsigned long sign_flags = 0, verify_flags = 0, rflags = 0;
int ret = 1;
int accept_count = -1;
int badarg = 0;
int i;
int ignore_err = 0;
STACK *reqnames = NULL;
STACK_OF(OCSP_CERTID) *ids = NULL;
X509 *rca_cert = NULL;
char *ridx_filename = NULL;
char *rca_filename = NULL;
CA_DB *rdb = NULL;
int nmin = 0, ndays = -1;
if (bio_err == NULL) bio_err = BIO_new_fp(stderr, BIO_NOCLOSE);
if (!load_config(bio_err, NULL))
goto end;
SSL_load_error_strings();
OpenSSL_add_ssl_algorithms();
args = argv + 1;
reqnames = sk_new_null();
ids = sk_OCSP_CERTID_new_null();
while (!badarg && *args && *args[0] == '-')
{
if (!strcmp(*args, "-out"))
{
if (args[1])
{
args++;
outfile = *args;
}
else badarg = 1;
}
else if (!strcmp(*args, "-url"))
{
if (args[1])
{
args++;
if (!OCSP_parse_url(*args, &host, &port, &path, &use_ssl))
{
BIO_printf(bio_err, "Error parsing URL\n");
badarg = 1;
}
}
else badarg = 1;
}
else if (!strcmp(*args, "-host"))
{
if (args[1])
{
args++;
host = *args;
}
else badarg = 1;
}
else if (!strcmp(*args, "-port"))
{
if (args[1])
{
args++;
port = *args;
}
else badarg = 1;
}
else if (!strcmp(*args, "-ignore_err"))
ignore_err = 1;
else if (!strcmp(*args, "-noverify"))
noverify = 1;
else if (!strcmp(*args, "-nonce"))
add_nonce = 2;
else if (!strcmp(*args, "-no_nonce"))
add_nonce = 0;
else if (!strcmp(*args, "-resp_no_certs"))
rflags |= OCSP_NOCERTS;
else if (!strcmp(*args, "-resp_key_id"))
rflags |= OCSP_RESPID_KEY;
else if (!strcmp(*args, "-no_certs"))
sign_flags |= OCSP_NOCERTS;
else if (!strcmp(*args, "-no_signature_verify"))
verify_flags |= OCSP_NOSIGS;
else if (!strcmp(*args, "-no_cert_verify"))
verify_flags |= OCSP_NOVERIFY;
else if (!strcmp(*args, "-no_chain"))
verify_flags |= OCSP_NOCHAIN;
else if (!strcmp(*args, "-no_cert_checks"))
verify_flags |= OCSP_NOCHECKS;
else if (!strcmp(*args, "-no_explicit"))
verify_flags |= OCSP_NOEXPLICIT;
else if (!strcmp(*args, "-trust_other"))
verify_flags |= OCSP_TRUSTOTHER;
else if (!strcmp(*args, "-no_intern"))
verify_flags |= OCSP_NOINTERN;
else if (!strcmp(*args, "-text"))
{
req_text = 1;
resp_text = 1;
}
else if (!strcmp(*args, "-req_text"))
req_text = 1;
else if (!strcmp(*args, "-resp_text"))
resp_text = 1;
else if (!strcmp(*args, "-reqin"))
{
if (args[1])
{
args++;
reqin = *args;
}
else badarg = 1;
}
else if (!strcmp(*args, "-respin"))
{
if (args[1])
{
args++;
respin = *args;
}
else badarg = 1;
}
else if (!strcmp(*args, "-signer"))
{
if (args[1])
{
args++;
signfile = *args;
}
else badarg = 1;
}
else if (!strcmp (*args, "-VAfile"))
{
if (args[1])
{
args++;
verify_certfile = *args;
verify_flags |= OCSP_TRUSTOTHER;
}
else badarg = 1;
}
else if (!strcmp(*args, "-sign_other"))
{
if (args[1])
{
args++;
sign_certfile = *args;
}
else badarg = 1;
}
else if (!strcmp(*args, "-verify_other"))
{
if (args[1])
{
args++;
verify_certfile = *args;
}
else badarg = 1;
}
else if (!strcmp (*args, "-CAfile"))
{
if (args[1])
{
args++;
CAfile = *args;
}
else badarg = 1;
}
else if (!strcmp (*args, "-CApath"))
{
if (args[1])
{
args++;
CApath = *args;
}
else badarg = 1;
}
else if (!strcmp (*args, "-validity_period"))
{
if (args[1])
{
args++;
nsec = atol(*args);
if (nsec < 0)
{
BIO_printf(bio_err,
"Illegal validity period %s\n",
*args);
badarg = 1;
}
}
else badarg = 1;
}
else if (!strcmp (*args, "-status_age"))
{
if (args[1])
{
args++;
maxage = atol(*args);
if (maxage < 0)
{
BIO_printf(bio_err,
"Illegal validity age %s\n",
*args);
badarg = 1;
}
}
else badarg = 1;
}
else if (!strcmp(*args, "-signkey"))
{
if (args[1])
{
args++;
keyfile = *args;
}
else badarg = 1;
}
else if (!strcmp(*args, "-reqout"))
{
if (args[1])
{
args++;
reqout = *args;
}
else badarg = 1;
}
else if (!strcmp(*args, "-respout"))
{
if (args[1])
{
args++;
respout = *args;
}
else badarg = 1;
}
else if (!strcmp(*args, "-path"))
{
if (args[1])
{
args++;
path = *args;
}
else badarg = 1;
}
else if (!strcmp(*args, "-issuer"))
{
if (args[1])
{
args++;
X509_free(issuer);
issuer = load_cert(bio_err, *args, FORMAT_PEM,
NULL, e, "issuer certificate");
if(!issuer) goto end;
}
else badarg = 1;
}
else if (!strcmp (*args, "-cert"))
{
if (args[1])
{
args++;
X509_free(cert);
cert = load_cert(bio_err, *args, FORMAT_PEM,
NULL, e, "certificate");
if(!cert) goto end;
if(!add_ocsp_cert(&req, cert, issuer, ids))
goto end;
if(!sk_push(reqnames, *args))
goto end;
}
else badarg = 1;
}
else if (!strcmp(*args, "-serial"))
{
if (args[1])
{
args++;
if(!add_ocsp_serial(&req, *args, issuer, ids))
goto end;
if(!sk_push(reqnames, *args))
goto end;
}
else badarg = 1;
}
else if (!strcmp(*args, "-index"))
{
if (args[1])
{
args++;
ridx_filename = *args;
}
else badarg = 1;
}
else if (!strcmp(*args, "-CA"))
{
if (args[1])
{
args++;
rca_filename = *args;
}
else badarg = 1;
}
else if (!strcmp (*args, "-nmin"))
{
if (args[1])
{
args++;
nmin = atol(*args);
if (nmin < 0)
{
BIO_printf(bio_err,
"Illegal update period %s\n",
*args);
badarg = 1;
}
}
if (ndays == -1)
ndays = 0;
else badarg = 1;
}
else if (!strcmp (*args, "-nrequest"))
{
if (args[1])
{
args++;
accept_count = atol(*args);
if (accept_count < 0)
{
BIO_printf(bio_err,
"Illegal accept count %s\n",
*args);
badarg = 1;
}
}
else badarg = 1;
}
else if (!strcmp (*args, "-ndays"))
{
if (args[1])
{
args++;
ndays = atol(*args);
if (ndays < 0)
{
BIO_printf(bio_err,
"Illegal update period %s\n",
*args);
badarg = 1;
}
}
else badarg = 1;
}
else if (!strcmp(*args, "-rsigner"))
{
if (args[1])
{
args++;
rsignfile = *args;
}
else badarg = 1;
}
else if (!strcmp(*args, "-rkey"))
{
if (args[1])
{
args++;
rkeyfile = *args;
}
else badarg = 1;
}
else if (!strcmp(*args, "-rother"))
{
if (args[1])
{
args++;
rcertfile = *args;
}
else badarg = 1;
}
else badarg = 1;
args++;
}
/* Have we anything to do? */
if (!req && !reqin && !respin && !(port && ridx_filename)) badarg = 1;
if (badarg)
{
BIO_printf (bio_err, "OCSP utility\n");
BIO_printf (bio_err, "Usage ocsp [options]\n");
BIO_printf (bio_err, "where options are\n");
BIO_printf (bio_err, "-out file output filename\n");
BIO_printf (bio_err, "-issuer file issuer certificate\n");
BIO_printf (bio_err, "-cert file certificate to check\n");
BIO_printf (bio_err, "-serial n serial number to check\n");
BIO_printf (bio_err, "-signer file certificate to sign OCSP request with\n");
BIO_printf (bio_err, "-signkey file private key to sign OCSP request with\n");
BIO_printf (bio_err, "-sign_other file additional certificates to include in signed request\n");
BIO_printf (bio_err, "-no_certs don't include any certificates in signed request\n");
BIO_printf (bio_err, "-req_text print text form of request\n");
BIO_printf (bio_err, "-resp_text print text form of response\n");
BIO_printf (bio_err, "-text print text form of request and response\n");
BIO_printf (bio_err, "-reqout file write DER encoded OCSP request to \"file\"\n");
BIO_printf (bio_err, "-respout file write DER encoded OCSP reponse to \"file\"\n");
BIO_printf (bio_err, "-reqin file read DER encoded OCSP request from \"file\"\n");
BIO_printf (bio_err, "-respin file read DER encoded OCSP reponse from \"file\"\n");
BIO_printf (bio_err, "-nonce add OCSP nonce to request\n");
BIO_printf (bio_err, "-no_nonce don't add OCSP nonce to request\n");
BIO_printf (bio_err, "-url URL OCSP responder URL\n");
BIO_printf (bio_err, "-host host:n send OCSP request to host on port n\n");
BIO_printf (bio_err, "-path path to use in OCSP request\n");
BIO_printf (bio_err, "-CApath dir trusted certificates directory\n");
BIO_printf (bio_err, "-CAfile file trusted certificates file\n");
BIO_printf (bio_err, "-VAfile file validator certificates file\n");
BIO_printf (bio_err, "-validity_period n maximum validity discrepancy in seconds\n");
BIO_printf (bio_err, "-status_age n maximum status age in seconds\n");
BIO_printf (bio_err, "-noverify don't verify response at all\n");
BIO_printf (bio_err, "-verify_other file additional certificates to search for signer\n");
BIO_printf (bio_err, "-trust_other don't verify additional certificates\n");
BIO_printf (bio_err, "-no_intern don't search certificates contained in response for signer\n");
BIO_printf (bio_err, "-no_signature_verify don't check signature on response\n");
BIO_printf (bio_err, "-no_cert_verify don't check signing certificate\n");
BIO_printf (bio_err, "-no_chain don't chain verify response\n");
BIO_printf (bio_err, "-no_cert_checks don't do additional checks on signing certificate\n");
BIO_printf (bio_err, "-port num port to run responder on\n");
BIO_printf (bio_err, "-index file certificate status index file\n");
BIO_printf (bio_err, "-CA file CA certificate\n");
BIO_printf (bio_err, "-rsigner file responder certificate to sign responses with\n");
BIO_printf (bio_err, "-rkey file responder key to sign responses with\n");
BIO_printf (bio_err, "-rother file other certificates to include in response\n");
BIO_printf (bio_err, "-resp_no_certs don't include any certificates in response\n");
BIO_printf (bio_err, "-nmin n number of minutes before next update\n");
BIO_printf (bio_err, "-ndays n number of days before next update\n");
BIO_printf (bio_err, "-resp_key_id identify reponse by signing certificate key ID\n");
BIO_printf (bio_err, "-nrequest n number of requests to accept (default unlimited)\n");
goto end;
}
if(outfile) out = BIO_new_file(outfile, "w");
else out = BIO_new_fp(stdout, BIO_NOCLOSE);
if(!out)
{
BIO_printf(bio_err, "Error opening output file\n");
goto end;
}
if (!req && (add_nonce != 2)) add_nonce = 0;
if (!req && reqin)
{
derbio = BIO_new_file(reqin, "rb");
if (!derbio)
{
BIO_printf(bio_err, "Error Opening OCSP request file\n");
goto end;
}
req = d2i_OCSP_REQUEST_bio(derbio, NULL);
BIO_free(derbio);
if(!req)
{
BIO_printf(bio_err, "Error reading OCSP request\n");
goto end;
}
}
if (!req && port)
{
acbio = init_responder(port);
if (!acbio)
goto end;
}
if (rsignfile && !rdb)
{
if (!rkeyfile) rkeyfile = rsignfile;
rsigner = load_cert(bio_err, rsignfile, FORMAT_PEM,
NULL, e, "responder certificate");
if (!rsigner)
{
BIO_printf(bio_err, "Error loading responder certificate\n");
goto end;
}
rca_cert = load_cert(bio_err, rca_filename, FORMAT_PEM,
NULL, e, "CA certificate");
if (rcertfile)
{
rother = load_certs(bio_err, rcertfile, FORMAT_PEM,
NULL, e, "responder other certificates");
if (!rother) goto end;
}
rkey = load_key(bio_err, rkeyfile, FORMAT_PEM, 0, NULL, NULL,
"responder private key");
if (!rkey)
goto end;
}
if(acbio)
BIO_printf(bio_err, "Waiting for OCSP client connections...\n");
redo_accept:
if (acbio)
{
if (!do_responder(&req, &cbio, acbio, port))
goto end;
if (!req)
{
resp = OCSP_response_create(OCSP_RESPONSE_STATUS_MALFORMEDREQUEST, NULL);
send_ocsp_response(cbio, resp);
goto done_resp;
}
}
if (!req && (signfile || reqout || host || add_nonce || ridx_filename))
{
BIO_printf(bio_err, "Need an OCSP request for this operation!\n");
goto end;
}
if (req && add_nonce) OCSP_request_add1_nonce(req, NULL, -1);
if (signfile)
{
if (!keyfile) keyfile = signfile;
signer = load_cert(bio_err, signfile, FORMAT_PEM,
NULL, e, "signer certificate");
if (!signer)
{
BIO_printf(bio_err, "Error loading signer certificate\n");
goto end;
}
if (sign_certfile)
{
sign_other = load_certs(bio_err, sign_certfile, FORMAT_PEM,
NULL, e, "signer certificates");
if (!sign_other) goto end;
}
key = load_key(bio_err, keyfile, FORMAT_PEM, 0, NULL, NULL,
"signer private key");
if (!key)
goto end;
if (!OCSP_request_sign(req, signer, key, EVP_sha1(), sign_other, sign_flags))
{
BIO_printf(bio_err, "Error signing OCSP request\n");
goto end;
}
}
if (req_text && req) OCSP_REQUEST_print(out, req, 0);
if (reqout)
{
derbio = BIO_new_file(reqout, "wb");
if(!derbio)
{
BIO_printf(bio_err, "Error opening file %s\n", reqout);
goto end;
}
i2d_OCSP_REQUEST_bio(derbio, req);
BIO_free(derbio);
}
if (ridx_filename && (!rkey || !rsigner || !rca_cert))
{
BIO_printf(bio_err, "Need a responder certificate, key and CA for this operation!\n");
goto end;
}
if (ridx_filename && !rdb)
{
rdb = load_index(ridx_filename, NULL);
if (!rdb) goto end;
if (!index_index(rdb)) goto end;
}
if (rdb)
{
i = make_ocsp_response(&resp, req, rdb, rca_cert, rsigner, rkey, rother, rflags, nmin, ndays);
if (cbio)
send_ocsp_response(cbio, resp);
}
else if (host)
{
#ifndef OPENSSL_NO_SOCK
cbio = BIO_new_connect(host);
#else
BIO_printf(bio_err, "Error creating connect BIO - sockets not supported.\n");
goto end;
#endif
if (!cbio)
{
BIO_printf(bio_err, "Error creating connect BIO\n");
goto end;
}
if (port) BIO_set_conn_port(cbio, port);
if (use_ssl == 1)
{
BIO *sbio;
#if !defined(OPENSSL_NO_SSL2) && !defined(OPENSSL_NO_SSL3)
ctx = SSL_CTX_new(SSLv23_client_method());
#elif !defined(OPENSSL_NO_SSL3)
ctx = SSL_CTX_new(SSLv3_client_method());
#elif !defined(OPENSSL_NO_SSL2)
ctx = SSL_CTX_new(SSLv2_client_method());
#else
BIO_printf(bio_err, "SSL is disabled\n");
goto end;
#endif
if (ctx == NULL)
{
BIO_printf(bio_err, "Error creating SSL context.\n");
goto end;
}
SSL_CTX_set_mode(ctx, SSL_MODE_AUTO_RETRY);
sbio = BIO_new_ssl(ctx, 1);
cbio = BIO_push(sbio, cbio);
}
if (BIO_do_connect(cbio) <= 0)
{
BIO_printf(bio_err, "Error connecting BIO\n");
goto end;
}
resp = OCSP_sendreq_bio(cbio, path, req);
BIO_free_all(cbio);
cbio = NULL;
if (!resp)
{
BIO_printf(bio_err, "Error querying OCSP responsder\n");
goto end;
}
}
else if (respin)
{
derbio = BIO_new_file(respin, "rb");
if (!derbio)
{
BIO_printf(bio_err, "Error Opening OCSP response file\n");
goto end;
}
resp = d2i_OCSP_RESPONSE_bio(derbio, NULL);
BIO_free(derbio);
if(!resp)
{
BIO_printf(bio_err, "Error reading OCSP response\n");
goto end;
}
}
else
{
ret = 0;
goto end;
}
done_resp:
if (respout)
{
derbio = BIO_new_file(respout, "wb");
if(!derbio)
{
BIO_printf(bio_err, "Error opening file %s\n", respout);
goto end;
}
i2d_OCSP_RESPONSE_bio(derbio, resp);
BIO_free(derbio);
}
i = OCSP_response_status(resp);
if (i != OCSP_RESPONSE_STATUS_SUCCESSFUL)
{
BIO_printf(out, "Responder Error: %s (%d)\n",
OCSP_response_status_str(i), i);
if (ignore_err)
goto redo_accept;
ret = 0;
goto end;
}
if (resp_text) OCSP_RESPONSE_print(out, resp, 0);
/* If running as responder don't verify our own response */
if (cbio)
{
if (accept_count > 0)
accept_count--;
/* Redo if more connections needed */
if (accept_count)
{
BIO_free_all(cbio);
cbio = NULL;
OCSP_REQUEST_free(req);
req = NULL;
OCSP_RESPONSE_free(resp);
resp = NULL;
goto redo_accept;
}
goto end;
}
if (!store)
store = setup_verify(bio_err, CAfile, CApath);
if (!store)
goto end;
if (verify_certfile)
{
verify_other = load_certs(bio_err, verify_certfile, FORMAT_PEM,
NULL, e, "validator certificate");
if (!verify_other) goto end;
}
bs = OCSP_response_get1_basic(resp);
if (!bs)
{
BIO_printf(bio_err, "Error parsing response\n");
goto end;
}
if (!noverify)
{
if (req && ((i = OCSP_check_nonce(req, bs)) <= 0))
{
if (i == -1)
BIO_printf(bio_err, "WARNING: no nonce in response\n");
else
{
BIO_printf(bio_err, "Nonce Verify error\n");
goto end;
}
}
i = OCSP_basic_verify(bs, verify_other, store, verify_flags);
if (i < 0) i = OCSP_basic_verify(bs, NULL, store, 0);
if(i <= 0)
{
BIO_printf(bio_err, "Response Verify Failure\n");
ERR_print_errors(bio_err);
}
else
BIO_printf(bio_err, "Response verify OK\n");
}
if (!print_ocsp_summary(out, bs, req, reqnames, ids, nsec, maxage))
goto end;
ret = 0;
end:
ERR_print_errors(bio_err);
X509_free(signer);
X509_STORE_free(store);
EVP_PKEY_free(key);
EVP_PKEY_free(rkey);
X509_free(issuer);
X509_free(cert);
X509_free(rsigner);
X509_free(rca_cert);
free_index(rdb);
BIO_free_all(cbio);
BIO_free_all(acbio);
BIO_free(out);
OCSP_REQUEST_free(req);
OCSP_RESPONSE_free(resp);
OCSP_BASICRESP_free(bs);
sk_free(reqnames);
sk_OCSP_CERTID_free(ids);
sk_X509_pop_free(sign_other, X509_free);
sk_X509_pop_free(verify_other, X509_free);
if (use_ssl != -1)
{
OPENSSL_free(host);
OPENSSL_free(port);
OPENSSL_free(path);
SSL_CTX_free(ctx);
}
OPENSSL_EXIT(ret);
}
static int add_ocsp_cert(OCSP_REQUEST **req, X509 *cert, X509 *issuer,
STACK_OF(OCSP_CERTID) *ids)
{
OCSP_CERTID *id;
if(!issuer)
{
BIO_printf(bio_err, "No issuer certificate specified\n");
return 0;
}
if(!*req) *req = OCSP_REQUEST_new();
if(!*req) goto err;
id = OCSP_cert_to_id(NULL, cert, issuer);
if(!id || !sk_OCSP_CERTID_push(ids, id)) goto err;
if(!OCSP_request_add0_id(*req, id)) goto err;
return 1;
err:
BIO_printf(bio_err, "Error Creating OCSP request\n");
return 0;
}
static int add_ocsp_serial(OCSP_REQUEST **req, char *serial, X509 *issuer,
STACK_OF(OCSP_CERTID) *ids)
{
OCSP_CERTID *id;
X509_NAME *iname;
ASN1_BIT_STRING *ikey;
ASN1_INTEGER *sno;
if(!issuer)
{
BIO_printf(bio_err, "No issuer certificate specified\n");
return 0;
}
if(!*req) *req = OCSP_REQUEST_new();
if(!*req) goto err;
iname = X509_get_subject_name(issuer);
ikey = X509_get0_pubkey_bitstr(issuer);
sno = s2i_ASN1_INTEGER(NULL, serial);
if(!sno)
{
BIO_printf(bio_err, "Error converting serial number %s\n", serial);
return 0;
}
id = OCSP_cert_id_new(EVP_sha1(), iname, ikey, sno);
ASN1_INTEGER_free(sno);
if(!id || !sk_OCSP_CERTID_push(ids, id)) goto err;
if(!OCSP_request_add0_id(*req, id)) goto err;
return 1;
err:
BIO_printf(bio_err, "Error Creating OCSP request\n");
return 0;
}
static int print_ocsp_summary(BIO *out, OCSP_BASICRESP *bs, OCSP_REQUEST *req,
STACK *names, STACK_OF(OCSP_CERTID) *ids,
long nsec, long maxage)
{
OCSP_CERTID *id;
char *name;
int i;
int status, reason;
ASN1_GENERALIZEDTIME *rev, *thisupd, *nextupd;
if (!bs || !req || !sk_num(names) || !sk_OCSP_CERTID_num(ids))
return 1;
for (i = 0; i < sk_OCSP_CERTID_num(ids); i++)
{
id = sk_OCSP_CERTID_value(ids, i);
name = sk_value(names, i);
BIO_printf(out, "%s: ", name);
if(!OCSP_resp_find_status(bs, id, &status, &reason,
&rev, &thisupd, &nextupd))
{
BIO_puts(out, "ERROR: No Status found.\n");
continue;
}
/* Check validity: if invalid write to output BIO so we
* know which response this refers to.
*/
if (!OCSP_check_validity(thisupd, nextupd, nsec, maxage))
{
BIO_puts(out, "WARNING: Status times invalid.\n");
ERR_print_errors(out);
}
BIO_printf(out, "%s\n", OCSP_cert_status_str(status));
BIO_puts(out, "\tThis Update: ");
ASN1_GENERALIZEDTIME_print(out, thisupd);
BIO_puts(out, "\n");
if(nextupd)
{
BIO_puts(out, "\tNext Update: ");
ASN1_GENERALIZEDTIME_print(out, nextupd);
BIO_puts(out, "\n");
}
if (status != V_OCSP_CERTSTATUS_REVOKED)
continue;
if (reason != -1)
BIO_printf(out, "\tReason: %s\n",
OCSP_crl_reason_str(reason));
BIO_puts(out, "\tRevocation Time: ");
ASN1_GENERALIZEDTIME_print(out, rev);
BIO_puts(out, "\n");
}
return 1;
}
static int make_ocsp_response(OCSP_RESPONSE **resp, OCSP_REQUEST *req, CA_DB *db,
X509 *ca, X509 *rcert, EVP_PKEY *rkey,
STACK_OF(X509) *rother, unsigned long flags,
int nmin, int ndays)
{
ASN1_TIME *thisupd = NULL, *nextupd = NULL;
OCSP_CERTID *cid, *ca_id = NULL;
OCSP_BASICRESP *bs = NULL;
int i, id_count, ret = 1;
id_count = OCSP_request_onereq_count(req);
if (id_count <= 0)
{
*resp = OCSP_response_create(OCSP_RESPONSE_STATUS_MALFORMEDREQUEST, NULL);
goto end;
}
ca_id = OCSP_cert_to_id(EVP_sha1(), NULL, ca);
bs = OCSP_BASICRESP_new();
thisupd = X509_gmtime_adj(NULL, 0);
if (ndays != -1)
nextupd = X509_gmtime_adj(NULL, nmin * 60 + ndays * 3600 * 24 );
/* Examine each certificate id in the request */
for (i = 0; i < id_count; i++)
{
OCSP_ONEREQ *one;
ASN1_INTEGER *serial;
char **inf;
one = OCSP_request_onereq_get0(req, i);
cid = OCSP_onereq_get0_id(one);
/* Is this request about our CA? */
if (OCSP_id_issuer_cmp(ca_id, cid))
{
OCSP_basic_add1_status(bs, cid,
V_OCSP_CERTSTATUS_UNKNOWN,
0, NULL,
thisupd, nextupd);
continue;
}
OCSP_id_get0_info(NULL, NULL, NULL, &serial, cid);
inf = lookup_serial(db, serial);
if (!inf)
OCSP_basic_add1_status(bs, cid,
V_OCSP_CERTSTATUS_UNKNOWN,
0, NULL,
thisupd, nextupd);
else if (inf[DB_type][0] == DB_TYPE_VAL)
OCSP_basic_add1_status(bs, cid,
V_OCSP_CERTSTATUS_GOOD,
0, NULL,
thisupd, nextupd);
else if (inf[DB_type][0] == DB_TYPE_REV)
{
ASN1_OBJECT *inst = NULL;
ASN1_TIME *revtm = NULL;
ASN1_GENERALIZEDTIME *invtm = NULL;
OCSP_SINGLERESP *single;
int reason = -1;
unpack_revinfo(&revtm, &reason, &inst, &invtm, inf[DB_rev_date]);
single = OCSP_basic_add1_status(bs, cid,
V_OCSP_CERTSTATUS_REVOKED,
reason, revtm,
thisupd, nextupd);
if (invtm)
OCSP_SINGLERESP_add1_ext_i2d(single, NID_invalidity_date, invtm, 0, 0);
else if (inst)
OCSP_SINGLERESP_add1_ext_i2d(single, NID_hold_instruction_code, inst, 0, 0);
ASN1_OBJECT_free(inst);
ASN1_TIME_free(revtm);
ASN1_GENERALIZEDTIME_free(invtm);
}
}
OCSP_copy_nonce(bs, req);
OCSP_basic_sign(bs, rcert, rkey, EVP_sha1(), rother, flags);
*resp = OCSP_response_create(OCSP_RESPONSE_STATUS_SUCCESSFUL, bs);
end:
ASN1_TIME_free(thisupd);
ASN1_TIME_free(nextupd);
OCSP_CERTID_free(ca_id);
OCSP_BASICRESP_free(bs);
return ret;
}
static char **lookup_serial(CA_DB *db, ASN1_INTEGER *ser)
{
int i;
BIGNUM *bn = NULL;
char *itmp, *row[DB_NUMBER],**rrow;
for (i = 0; i < DB_NUMBER; i++) row[i] = NULL;
bn = ASN1_INTEGER_to_BN(ser,NULL);
if (BN_is_zero(bn))
itmp = BUF_strdup("00");
else
itmp = BN_bn2hex(bn);
row[DB_serial] = itmp;
BN_free(bn);
rrow=TXT_DB_get_by_index(db->db,DB_serial,row);
OPENSSL_free(itmp);
return rrow;
}
/* Quick and dirty OCSP server: read in and parse input request */
static BIO *init_responder(char *port)
{
BIO *acbio = NULL, *bufbio = NULL;
bufbio = BIO_new(BIO_f_buffer());
if (!bufbio)
goto err;
#ifndef OPENSSL_NO_SOCK
acbio = BIO_new_accept(port);
#else
BIO_printf(bio_err, "Error setting up accept BIO - sockets not supported.\n");
#endif
if (!acbio)
goto err;
BIO_set_accept_bios(acbio, bufbio);
bufbio = NULL;
if (BIO_do_accept(acbio) <= 0)
{
BIO_printf(bio_err, "Error setting up accept BIO\n");
ERR_print_errors(bio_err);
goto err;
}
return acbio;
err:
BIO_free_all(acbio);
BIO_free(bufbio);
return NULL;
}
static int do_responder(OCSP_REQUEST **preq, BIO **pcbio, BIO *acbio, char *port)
{
int have_post = 0, len;
OCSP_REQUEST *req = NULL;
char inbuf[1024];
BIO *cbio = NULL;
if (BIO_do_accept(acbio) <= 0)
{
BIO_printf(bio_err, "Error accepting connection\n");
ERR_print_errors(bio_err);
return 0;
}
cbio = BIO_pop(acbio);
*pcbio = cbio;
for(;;)
{
len = BIO_gets(cbio, inbuf, sizeof inbuf);
if (len <= 0)
return 1;
/* Look for "POST" signalling start of query */
if (!have_post)
{
if(strncmp(inbuf, "POST", 4))
{
BIO_printf(bio_err, "Invalid request\n");
return 1;
}
have_post = 1;
}
/* Look for end of headers */
if ((inbuf[0] == '\r') || (inbuf[0] == '\n'))
break;
}
/* Try to read OCSP request */
req = d2i_OCSP_REQUEST_bio(cbio, NULL);
if (!req)
{
BIO_printf(bio_err, "Error parsing OCSP request\n");
ERR_print_errors(bio_err);
}
*preq = req;
return 1;
}
static int send_ocsp_response(BIO *cbio, OCSP_RESPONSE *resp)
{
char http_resp[] =
"HTTP/1.0 200 OK\r\nContent-type: application/ocsp-response\r\n"
"Content-Length: %d\r\n\r\n";
if (!cbio)
return 0;
BIO_printf(cbio, http_resp, i2d_OCSP_RESPONSE(resp, NULL));
i2d_OCSP_RESPONSE_bio(cbio, resp);
(void)BIO_flush(cbio);
return 1;
}
#endif
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