File: [local] / src / usr.bin / openssl / ocsp.c (download)
Revision 1.6, Sat Oct 10 22:28:51 2015 UTC (8 years, 8 months ago) by doug
Branch: MAIN
Changes since 1.5: +6 -1 lines
Initial support for pledges in openssl(1) commands.
openssl(1) has two mechanisms for operating: either a single execution
of one command (looking at argv[0] or argv[1]) or as an interactive
session than may execute any number of commands.
We already have a top level pledge that should cover all commands
and that's what interactive mode must continue using. However, we can
tighten up the pledges when only executing one command.
This is an initial stab at support and may contain regressions. Most
commands only need "stdio rpath wpath cpath". The pledges could be
further restricted by evaluating the situation after parsing options.
deraadt@ and beck@ are roughly fine with this approach.
|
/* $OpenBSD: ocsp.c,v 1.6 2015/10/10 22:28:51 doug Exp $ */
/* Written by Dr Stephen N Henson (steve@openssl.org) 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
* 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).
*
*/
#ifndef OPENSSL_NO_OCSP
#include <sys/types.h>
#include <stdio.h>
#include <stdlib.h>
#include <limits.h>
#include <string.h>
#include <poll.h>
#include <time.h>
/* Needs to be included before the openssl headers! */
#include "apps.h"
#include <openssl/bn.h>
#include <openssl/crypto.h>
#include <openssl/err.h>
#include <openssl/evp.h>
#include <openssl/ssl.h>
#include <openssl/x509v3.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, const EVP_MD * cert_id_md, X509 * issuer,
STACK_OF(OCSP_CERTID) * ids);
static int add_ocsp_serial(OCSP_REQUEST ** req, char *serial, const EVP_MD * cert_id_md, X509 * issuer,
STACK_OF(OCSP_CERTID) * ids);
static int print_ocsp_summary(BIO * out, OCSP_BASICRESP * bs, OCSP_REQUEST * req,
STACK_OF(OPENSSL_STRING) * 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);
static OCSP_RESPONSE *query_responder(BIO * err, BIO * cbio, char *path,
STACK_OF(CONF_VALUE) * headers,
OCSP_REQUEST * req, int req_timeout);
int
ocsp_main(int argc, char **argv)
{
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;
STACK_OF(CONF_VALUE) * headers = NULL;
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_timeout = -1;
int req_text = 0, resp_text = 0;
long nsec = MAX_VALIDITY_PERIOD, maxage = -1;
char *CAfile = NULL, *CApath = NULL;
X509_STORE *store = 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_OF(OPENSSL_STRING) * 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;
const EVP_MD *cert_id_md = NULL;
const char *errstr = NULL;
if (single_execution) {
if (pledge("stdio inet rpath wpath cpath", NULL) == -1)
perror("pledge");
}
args = argv + 1;
reqnames = sk_OPENSSL_STRING_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, "-timeout")) {
if (args[1]) {
args++;
req_timeout = strtonum(*args, 0,
INT_MAX, &errstr);
if (errstr) {
BIO_printf(bio_err,
"Illegal timeout value %s: %s\n",
*args, errstr);
badarg = 1;
}
} 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, "-header")) {
if (args[1] && args[2]) {
if (!X509V3_add_value(args[1], args[2], &headers))
goto end;
args += 2;
} 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 = strtonum(*args, 0, LONG_MAX, &errstr);
if (errstr) {
BIO_printf(bio_err,
"Illegal validity period %s: %s\n",
*args, errstr);
badarg = 1;
}
} else
badarg = 1;
} else if (!strcmp(*args, "-status_age")) {
if (args[1]) {
args++;
maxage = strtonum(*args, 0, LONG_MAX, &errstr);
if (errstr) {
BIO_printf(bio_err,
"Illegal validity age %s: %s\n",
*args, errstr);
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, "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, "certificate");
if (!cert)
goto end;
if (!cert_id_md)
cert_id_md = EVP_sha1();
if (!add_ocsp_cert(&req, cert, cert_id_md, issuer, ids))
goto end;
if (!sk_OPENSSL_STRING_push(reqnames, *args))
goto end;
} else
badarg = 1;
} else if (!strcmp(*args, "-serial")) {
if (args[1]) {
args++;
if (!cert_id_md)
cert_id_md = EVP_sha1();
if (!add_ocsp_serial(&req, *args, cert_id_md, issuer, ids))
goto end;
if (!sk_OPENSSL_STRING_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 = strtonum(*args, 0, INT_MAX, &errstr);
if (errstr) {
BIO_printf(bio_err,
"Illegal update period %s: %s\n",
*args, errstr);
badarg = 1;
}
}
if (ndays == -1)
ndays = 0;
else
badarg = 1;
} else if (!strcmp(*args, "-nrequest")) {
if (args[1]) {
args++;
accept_count = strtonum(*args, 0, INT_MAX, &errstr);
if (errstr) {
BIO_printf(bio_err,
"Illegal accept count %s: %s\n",
*args, errstr);
badarg = 1;
}
} else
badarg = 1;
} else if (!strcmp(*args, "-ndays")) {
if (args[1]) {
args++;
ndays = strtonum(*args, 0, INT_MAX, &errstr);
if (errstr) {
BIO_printf(bio_err,
"Illegal update period %s: %s\n",
*args, errstr);
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 if ((cert_id_md = EVP_get_digestbyname((*args) + 1)) == NULL) {
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");
BIO_printf(bio_err, "-<dgst alg> use specified digest in the request\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, "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, "CA certificate");
if (rcertfile) {
rother = load_certs(bio_err, rcertfile, FORMAT_PEM,
NULL, "responder other certificates");
if (!rother)
goto end;
}
rkey = load_key(bio_err, rkeyfile, FORMAT_PEM, 0, 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, "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, "signer certificates");
if (!sign_other)
goto end;
}
key = load_key(bio_err, keyfile, FORMAT_PEM, 0, NULL,
"signer private key");
if (!key)
goto end;
if (!OCSP_request_sign(req, signer, key, NULL, 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) {
resp = process_responder(bio_err, req, host, path,
port, use_ssl, headers, req_timeout);
if (!resp)
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, "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_OPENSSL_STRING_free(reqnames);
sk_OCSP_CERTID_free(ids);
sk_X509_pop_free(sign_other, X509_free);
sk_X509_pop_free(verify_other, X509_free);
sk_CONF_VALUE_pop_free(headers, X509V3_conf_free);
if (use_ssl != -1) {
free(host);
free(port);
free(path);
}
return (ret);
}
static int
add_ocsp_cert(OCSP_REQUEST ** req, X509 * cert, const EVP_MD * cert_id_md, 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(cert_id_md, 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, const EVP_MD * cert_id_md, 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(cert_id_md, 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_OF(OPENSSL_STRING) * 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_OPENSSL_STRING_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_OPENSSL_STRING_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;
}
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;
ASN1_OBJECT *cert_id_md_oid;
const EVP_MD *cert_id_md;
one = OCSP_request_onereq_get0(req, i);
cid = OCSP_onereq_get0_id(one);
OCSP_id_get0_info(NULL, &cert_id_md_oid, NULL, NULL, cid);
cert_id_md = EVP_get_digestbyobj(cert_id_md_oid);
if (!cert_id_md) {
*resp = OCSP_response_create(OCSP_RESPONSE_STATUS_INTERNALERROR,
NULL);
goto end;
}
if (ca_id)
OCSP_CERTID_free(ca_id);
ca_id = OCSP_cert_to_id(cert_id_md, NULL, ca);
/* 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, NULL, 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);
OPENSSL_assert(bn); /* FIXME: should report an error at this
* point and abort */
if (BN_is_zero(bn))
itmp = 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);
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;
acbio = BIO_new_accept(port);
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)
{
static const 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;
}
static OCSP_RESPONSE *
query_responder(BIO * err, BIO * cbio, char *path,
STACK_OF(CONF_VALUE) * headers,
OCSP_REQUEST * req, int req_timeout)
{
int fd;
int rv;
int i;
OCSP_REQ_CTX *ctx = NULL;
OCSP_RESPONSE *rsp = NULL;
struct pollfd pfd[1];
if (req_timeout != -1)
BIO_set_nbio(cbio, 1);
rv = BIO_do_connect(cbio);
if ((rv <= 0) && ((req_timeout == -1) || !BIO_should_retry(cbio))) {
BIO_puts(err, "Error connecting BIO\n");
return NULL;
}
if (BIO_get_fd(cbio, &fd) < 0) {
BIO_puts(err, "Can't get connection fd\n");
goto err;
}
if (req_timeout != -1 && rv <= 0) {
pfd[0].fd = fd;
pfd[0].events = POLLOUT;
rv = poll(pfd, 1, req_timeout * 1000);
if (rv == 0) {
BIO_puts(err, "Timeout on connect\n");
return NULL;
}
if (rv == -1) {
BIO_puts(err, "Poll error\n");
return NULL;
}
}
ctx = OCSP_sendreq_new(cbio, path, NULL, -1);
if (!ctx)
return NULL;
for (i = 0; i < sk_CONF_VALUE_num(headers); i++) {
CONF_VALUE *hdr = sk_CONF_VALUE_value(headers, i);
if (!OCSP_REQ_CTX_add1_header(ctx, hdr->name, hdr->value))
goto err;
}
if (!OCSP_REQ_CTX_set1_req(ctx, req))
goto err;
for (;;) {
rv = OCSP_sendreq_nbio(&rsp, ctx);
if (rv != -1)
break;
if (req_timeout == -1)
continue;
pfd[0].fd = fd;
if (BIO_should_read(cbio))
pfd[0].events = POLLIN;
else if (BIO_should_write(cbio))
pfd[0].events = POLLOUT;
else {
BIO_puts(err, "Unexpected retry condition\n");
goto err;
}
rv = poll(pfd, 1, req_timeout * 1000);
if (rv == 0) {
BIO_puts(err, "Timeout on request\n");
break;
}
if (rv == -1 || (pfd[0].revents & (POLLERR|POLLNVAL))) {
BIO_puts(err, "Poll error\n");
break;
}
}
err:
if (ctx)
OCSP_REQ_CTX_free(ctx);
return rsp;
}
OCSP_RESPONSE *
process_responder(BIO * err, OCSP_REQUEST * req,
char *host, char *path, char *port, int use_ssl,
STACK_OF(CONF_VALUE) * headers,
int req_timeout)
{
BIO *cbio = NULL;
SSL_CTX *ctx = NULL;
OCSP_RESPONSE *resp = NULL;
cbio = BIO_new_connect(host);
if (!cbio) {
BIO_printf(err, "Error creating connect BIO\n");
goto end;
}
if (port)
BIO_set_conn_port(cbio, port);
if (use_ssl == 1) {
BIO *sbio;
ctx = SSL_CTX_new(SSLv23_client_method());
if (ctx == NULL) {
BIO_printf(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);
}
resp = query_responder(err, cbio, path, headers, req, req_timeout);
if (!resp)
BIO_printf(bio_err, "Error querying OCSP responder\n");
end:
if (cbio)
BIO_free_all(cbio);
if (ctx)
SSL_CTX_free(ctx);
return resp;
}
#endif
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