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openssl/apps/ocsp.c
Rich Salz 021410ea3f Check non-option arguments 
Make sure all commands check to see if there are any "extra" arguments
after the options, and print an error if so.

Made all error messages consistent (which is to say, minimal).

Fixes: #13527

Reviewed-by: Shane Lontis <shane.lontis@oracle.com>
Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org>
(Merged from https://github.com/openssl/openssl/pull/13563)
2020-12-15 11:47:17 +01:00

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/*
* Copyright 2001-2020 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#include <openssl/opensslconf.h>
#ifdef OPENSSL_SYS_VMS
/* So fd_set and friends get properly defined on OpenVMS */
# define _XOPEN_SOURCE_EXTENDED
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <ctype.h>
/* Needs to be included before the openssl headers */
#include "apps.h"
#include "http_server.h"
#include "progs.h"
#include "internal/sockets.h"
#include <openssl/e_os2.h>
#include <openssl/crypto.h>
#include <openssl/err.h>
#include <openssl/ssl.h>
#include <openssl/evp.h>
#include <openssl/bn.h>
#include <openssl/x509v3.h>
#if defined(__TANDEM)
# if defined(OPENSSL_TANDEM_FLOSS)
# include <floss.h(floss_fork)>
# endif
#endif
#if defined(OPENSSL_SYS_VXWORKS)
/* not supported */
int setpgid(pid_t pid, pid_t pgid)
{
errno = ENOSYS;
return 0;
}
/* not supported */
pid_t fork(void)
{
errno = ENOSYS;
return (pid_t) -1;
}
#endif
/* 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 void make_ocsp_response(BIO *err, OCSP_RESPONSE **resp, OCSP_REQUEST *req,
CA_DB *db, STACK_OF(X509) *ca, X509 *rcert,
EVP_PKEY *rkey, const EVP_MD *md,
STACK_OF(OPENSSL_STRING) *sigopts,
STACK_OF(X509) *rother, unsigned long flags,
int nmin, int ndays, int badsig,
const EVP_MD *resp_md);
static char **lookup_serial(CA_DB *db, ASN1_INTEGER *ser);
static int do_responder(OCSP_REQUEST **preq, BIO **pcbio, BIO *acbio,
int timeout);
static int send_ocsp_response(BIO *cbio, const OCSP_RESPONSE *resp);
static char *prog;
#ifdef HTTP_DAEMON
static int index_changed(CA_DB *);
#endif
typedef enum OPTION_choice {
OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
OPT_OUTFILE, OPT_TIMEOUT, OPT_URL, OPT_HOST, OPT_PORT,
OPT_IGNORE_ERR, OPT_NOVERIFY, OPT_NONCE, OPT_NO_NONCE,
OPT_RESP_NO_CERTS, OPT_RESP_KEY_ID, OPT_NO_CERTS,
OPT_NO_SIGNATURE_VERIFY, OPT_NO_CERT_VERIFY, OPT_NO_CHAIN,
OPT_NO_CERT_CHECKS, OPT_NO_EXPLICIT, OPT_TRUST_OTHER,
OPT_NO_INTERN, OPT_BADSIG, OPT_TEXT, OPT_REQ_TEXT, OPT_RESP_TEXT,
OPT_REQIN, OPT_RESPIN, OPT_SIGNER, OPT_VAFILE, OPT_SIGN_OTHER,
OPT_VERIFY_OTHER, OPT_CAFILE, OPT_CAPATH, OPT_CASTORE, OPT_NOCAFILE,
OPT_NOCAPATH, OPT_NOCASTORE,
OPT_VALIDITY_PERIOD, OPT_STATUS_AGE, OPT_SIGNKEY, OPT_REQOUT,
OPT_RESPOUT, OPT_PATH, OPT_ISSUER, OPT_CERT, OPT_SERIAL,
OPT_INDEX, OPT_CA, OPT_NMIN, OPT_REQUEST, OPT_NDAYS, OPT_RSIGNER,
OPT_RKEY, OPT_ROTHER, OPT_RMD, OPT_RSIGOPT, OPT_HEADER,
OPT_PASSIN,
OPT_RCID,
OPT_V_ENUM,
OPT_MD,
OPT_MULTI, OPT_PROV_ENUM
} OPTION_CHOICE;
const OPTIONS ocsp_options[] = {
OPT_SECTION("General"),
{"help", OPT_HELP, '-', "Display this summary"},
{"ignore_err", OPT_IGNORE_ERR, '-',
"Ignore error on OCSP request or response and continue running"},
{"CAfile", OPT_CAFILE, '<', "Trusted certificates file"},
{"CApath", OPT_CAPATH, '<', "Trusted certificates directory"},
{"CAstore", OPT_CASTORE, ':', "Trusted certificates store URI"},
{"no-CAfile", OPT_NOCAFILE, '-',
"Do not load the default certificates file"},
{"no-CApath", OPT_NOCAPATH, '-',
"Do not load certificates from the default certificates directory"},
{"no-CAstore", OPT_NOCASTORE, '-',
"Do not load certificates from the default certificates store"},
OPT_SECTION("Responder"),
{"timeout", OPT_TIMEOUT, 'p',
"Connection timeout (in seconds) to the OCSP responder"},
{"resp_no_certs", OPT_RESP_NO_CERTS, '-',
"Don't include any certificates in response"},
#ifdef HTTP_DAEMON
{"multi", OPT_MULTI, 'p', "run multiple responder processes"},
#endif
{"no_certs", OPT_NO_CERTS, '-',
"Don't include any certificates in signed request"},
{"badsig", OPT_BADSIG, '-',
"Corrupt last byte of loaded OSCP response signature (for test)"},
{"CA", OPT_CA, '<', "CA certificate"},
{"nmin", OPT_NMIN, 'p', "Number of minutes before next update"},
{"nrequest", OPT_REQUEST, 'p',
"Number of requests to accept (default unlimited)"},
{"reqin", OPT_REQIN, 's', "File with the DER-encoded request"},
{"signer", OPT_SIGNER, '<', "Certificate to sign OCSP request with"},
{"sign_other", OPT_SIGN_OTHER, '<',
"Additional certificates to include in signed request"},
{"index", OPT_INDEX, '<', "Certificate status index file"},
{"ndays", OPT_NDAYS, 'p', "Number of days before next update"},
{"rsigner", OPT_RSIGNER, '<',
"Responder certificate to sign responses with"},
{"rkey", OPT_RKEY, '<', "Responder key to sign responses with"},
{"passin", OPT_PASSIN, 's', "Responder key pass phrase source"},
{"rother", OPT_ROTHER, '<', "Other certificates to include in response"},
{"rmd", OPT_RMD, 's', "Digest Algorithm to use in signature of OCSP response"},
{"rsigopt", OPT_RSIGOPT, 's', "OCSP response signature parameter in n:v form"},
{"header", OPT_HEADER, 's', "key=value header to add"},
{"rcid", OPT_RCID, 's', "Use specified algorithm for cert id in response"},
{"", OPT_MD, '-', "Any supported digest algorithm (sha1,sha256, ... )"},
OPT_SECTION("Client"),
{"url", OPT_URL, 's', "Responder URL"},
{"host", OPT_HOST, 's', "TCP/IP hostname:port to connect to"},
{"port", OPT_PORT, 'p', "Port to run responder on"},
{"out", OPT_OUTFILE, '>', "Output filename"},
{"noverify", OPT_NOVERIFY, '-', "Don't verify response at all"},
{"nonce", OPT_NONCE, '-', "Add OCSP nonce to request"},
{"no_nonce", OPT_NO_NONCE, '-', "Don't add OCSP nonce to request"},
{"no_signature_verify", OPT_NO_SIGNATURE_VERIFY, '-',
"Don't check signature on response"},
{"resp_key_id", OPT_RESP_KEY_ID, '-',
"Identify response by signing certificate key ID"},
{"no_cert_verify", OPT_NO_CERT_VERIFY, '-',
"Don't check signing certificate"},
{"text", OPT_TEXT, '-', "Print text form of request and response"},
{"req_text", OPT_REQ_TEXT, '-', "Print text form of request"},
{"resp_text", OPT_RESP_TEXT, '-', "Print text form of response"},
{"no_chain", OPT_NO_CHAIN, '-', "Don't chain verify response"},
{"no_cert_checks", OPT_NO_CERT_CHECKS, '-',
"Don't do additional checks on signing certificate"},
{"no_explicit", OPT_NO_EXPLICIT, '-',
"Do not explicitly check the chain, just verify the root"},
{"trust_other", OPT_TRUST_OTHER, '-',
"Don't verify additional certificates"},
{"no_intern", OPT_NO_INTERN, '-',
"Don't search certificates contained in response for signer"},
{"respin", OPT_RESPIN, 's', "File with the DER-encoded response"},
{"VAfile", OPT_VAFILE, '<', "Validator certificates file"},
{"verify_other", OPT_VERIFY_OTHER, '<',
"Additional certificates to search for signer"},
{"path", OPT_PATH, 's', "Path to use in OCSP request"},
{"cert", OPT_CERT, '<', "Certificate to check"},
{"serial", OPT_SERIAL, 's', "Serial number to check"},
{"validity_period", OPT_VALIDITY_PERIOD, 'u',
"Maximum validity discrepancy in seconds"},
{"signkey", OPT_SIGNKEY, 's', "Private key to sign OCSP request with"},
{"reqout", OPT_REQOUT, 's', "Output file for the DER-encoded request"},
{"respout", OPT_RESPOUT, 's', "Output file for the DER-encoded response"},
{"issuer", OPT_ISSUER, '<', "Issuer certificate"},
{"status_age", OPT_STATUS_AGE, 'p', "Maximum status age in seconds"},
OPT_V_OPTIONS,
OPT_PROV_OPTIONS,
{NULL}
};
int ocsp_main(int argc, char **argv)
{
BIO *acbio = NULL, *cbio = NULL, *derbio = NULL, *out = NULL;
const EVP_MD *cert_id_md = NULL, *rsign_md = NULL;
STACK_OF(OPENSSL_STRING) *rsign_sigopts = NULL;
int trailing_md = 0;
CA_DB *rdb = NULL;
EVP_PKEY *key = NULL, *rkey = NULL;
OCSP_BASICRESP *bs = NULL;
OCSP_REQUEST *req = NULL;
OCSP_RESPONSE *resp = NULL;
STACK_OF(CONF_VALUE) *headers = NULL;
STACK_OF(OCSP_CERTID) *ids = NULL;
STACK_OF(OPENSSL_STRING) *reqnames = NULL;
STACK_OF(X509) *sign_other = NULL, *verify_other = NULL, *rother = NULL;
STACK_OF(X509) *issuers = NULL;
X509 *issuer = NULL, *cert = NULL;
STACK_OF(X509) *rca_cert = NULL;
const EVP_MD *resp_certid_md = NULL;
X509 *signer = NULL, *rsigner = NULL;
X509_STORE *store = NULL;
X509_VERIFY_PARAM *vpm = NULL;
const char *CAfile = NULL, *CApath = NULL, *CAstore = NULL;
char *header, *value;
char *host = NULL, *port = NULL, *path = "/", *outfile = NULL;
char *rca_filename = NULL, *reqin = NULL, *respin = NULL;
char *reqout = NULL, *respout = NULL, *ridx_filename = NULL;
char *rsignfile = NULL, *rkeyfile = NULL;
char *passinarg = NULL, *passin = NULL;
char *sign_certfile = NULL, *verify_certfile = NULL, *rcertfile = NULL;
char *signfile = NULL, *keyfile = NULL;
char *thost = NULL, *tport = NULL, *tpath = NULL;
int noCAfile = 0, noCApath = 0, noCAstore = 0;
int accept_count = -1, add_nonce = 1, noverify = 0, use_ssl = -1;
int vpmtouched = 0, badsig = 0, i, ignore_err = 0, nmin = 0, ndays = -1;
int req_text = 0, resp_text = 0, res, ret = 1;
int req_timeout = -1;
long nsec = MAX_VALIDITY_PERIOD, maxage = -1;
unsigned long sign_flags = 0, verify_flags = 0, rflags = 0;
OPTION_CHOICE o;
reqnames = sk_OPENSSL_STRING_new_null();
if (reqnames == NULL)
goto end;
ids = sk_OCSP_CERTID_new_null();
if (ids == NULL)
goto end;
if ((vpm = X509_VERIFY_PARAM_new()) == NULL)
return 1;
prog = opt_init(argc, argv, ocsp_options);
while ((o = opt_next()) != OPT_EOF) {
switch (o) {
case OPT_EOF:
case OPT_ERR:
opthelp:
BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
goto end;
case OPT_HELP:
ret = 0;
opt_help(ocsp_options);
goto end;
case OPT_OUTFILE:
outfile = opt_arg();
break;
case OPT_TIMEOUT:
#ifndef OPENSSL_NO_SOCK
req_timeout = atoi(opt_arg());
#endif
break;
case OPT_URL:
OPENSSL_free(thost);
OPENSSL_free(tport);
OPENSSL_free(tpath);
thost = tport = tpath = NULL;
if (!OSSL_HTTP_parse_url(opt_arg(),
&host, &port, NULL, &path, &use_ssl)) {
BIO_printf(bio_err, "%s Error parsing URL\n", prog);
goto end;
}
thost = host;
tport = port;
tpath = path;
break;
case OPT_HOST:
host = opt_arg();
break;
case OPT_PORT:
port = opt_arg();
break;
case OPT_IGNORE_ERR:
ignore_err = 1;
break;
case OPT_NOVERIFY:
noverify = 1;
break;
case OPT_NONCE:
add_nonce = 2;
break;
case OPT_NO_NONCE:
add_nonce = 0;
break;
case OPT_RESP_NO_CERTS:
rflags |= OCSP_NOCERTS;
break;
case OPT_RESP_KEY_ID:
rflags |= OCSP_RESPID_KEY;
break;
case OPT_NO_CERTS:
sign_flags |= OCSP_NOCERTS;
break;
case OPT_NO_SIGNATURE_VERIFY:
verify_flags |= OCSP_NOSIGS;
break;
case OPT_NO_CERT_VERIFY:
verify_flags |= OCSP_NOVERIFY;
break;
case OPT_NO_CHAIN:
verify_flags |= OCSP_NOCHAIN;
break;
case OPT_NO_CERT_CHECKS:
verify_flags |= OCSP_NOCHECKS;
break;
case OPT_NO_EXPLICIT:
verify_flags |= OCSP_NOEXPLICIT;
break;
case OPT_TRUST_OTHER:
verify_flags |= OCSP_TRUSTOTHER;
break;
case OPT_NO_INTERN:
verify_flags |= OCSP_NOINTERN;
break;
case OPT_BADSIG:
badsig = 1;
break;
case OPT_TEXT:
req_text = resp_text = 1;
break;
case OPT_REQ_TEXT:
req_text = 1;
break;
case OPT_RESP_TEXT:
resp_text = 1;
break;
case OPT_REQIN:
reqin = opt_arg();
break;
case OPT_RESPIN:
respin = opt_arg();
break;
case OPT_SIGNER:
signfile = opt_arg();
break;
case OPT_VAFILE:
verify_certfile = opt_arg();
verify_flags |= OCSP_TRUSTOTHER;
break;
case OPT_SIGN_OTHER:
sign_certfile = opt_arg();
break;
case OPT_VERIFY_OTHER:
verify_certfile = opt_arg();
break;
case OPT_CAFILE:
CAfile = opt_arg();
break;
case OPT_CAPATH:
CApath = opt_arg();
break;
case OPT_CASTORE:
CAstore = opt_arg();
break;
case OPT_NOCAFILE:
noCAfile = 1;
break;
case OPT_NOCAPATH:
noCApath = 1;
break;
case OPT_NOCASTORE:
noCAstore = 1;
break;
case OPT_V_CASES:
if (!opt_verify(o, vpm))
goto end;
vpmtouched++;
break;
case OPT_VALIDITY_PERIOD:
opt_long(opt_arg(), &nsec);
break;
case OPT_STATUS_AGE:
opt_long(opt_arg(), &maxage);
break;
case OPT_SIGNKEY:
keyfile = opt_arg();
break;
case OPT_REQOUT:
reqout = opt_arg();
break;
case OPT_RESPOUT:
respout = opt_arg();
break;
case OPT_PATH:
path = opt_arg();
break;
case OPT_ISSUER:
issuer = load_cert(opt_arg(), "issuer certificate");
if (issuer == NULL)
goto end;
if (issuers == NULL) {
if ((issuers = sk_X509_new_null()) == NULL)
goto end;
}
if (!sk_X509_push(issuers, issuer))
goto end;
break;
case OPT_CERT:
X509_free(cert);
cert = load_cert(opt_arg(), "certificate");
if (cert == NULL)
goto end;
if (cert_id_md == NULL)
cert_id_md = EVP_sha1();
if (!add_ocsp_cert(&req, cert, cert_id_md, issuer, ids))
goto end;
if (!sk_OPENSSL_STRING_push(reqnames, opt_arg()))
goto end;
trailing_md = 0;
break;
case OPT_SERIAL:
if (cert_id_md == NULL)
cert_id_md = EVP_sha1();
if (!add_ocsp_serial(&req, opt_arg(), cert_id_md, issuer, ids))
goto end;
if (!sk_OPENSSL_STRING_push(reqnames, opt_arg()))
goto end;
trailing_md = 0;
break;
case OPT_INDEX:
ridx_filename = opt_arg();
break;
case OPT_CA:
rca_filename = opt_arg();
break;
case OPT_NMIN:
opt_int(opt_arg(), &nmin);
if (ndays == -1)
ndays = 0;
break;
case OPT_REQUEST:
opt_int(opt_arg(), &accept_count);
break;
case OPT_NDAYS:
ndays = atoi(opt_arg());
break;
case OPT_RSIGNER:
rsignfile = opt_arg();
break;
case OPT_RKEY:
rkeyfile = opt_arg();
break;
case OPT_PASSIN:
passinarg = opt_arg();
break;
case OPT_ROTHER:
rcertfile = opt_arg();
break;
case OPT_RMD: /* Response MessageDigest */
if (!opt_md(opt_arg(), &rsign_md))
goto end;
break;
case OPT_RSIGOPT:
if (rsign_sigopts == NULL)
rsign_sigopts = sk_OPENSSL_STRING_new_null();
if (rsign_sigopts == NULL || !sk_OPENSSL_STRING_push(rsign_sigopts, opt_arg()))
goto end;
break;
case OPT_HEADER:
header = opt_arg();
value = strchr(header, '=');
if (value == NULL) {
BIO_printf(bio_err, "Missing = in header key=value\n");
goto opthelp;
}
*value++ = '\0';
if (!X509V3_add_value(header, value, &headers))
goto end;
break;
case OPT_RCID:
resp_certid_md = EVP_get_digestbyname(opt_arg());
if (resp_certid_md == NULL)
goto opthelp;
break;
case OPT_MD:
if (trailing_md) {
BIO_printf(bio_err,
"%s: Digest must be before -cert or -serial\n",
prog);
goto opthelp;
}
if (!opt_md(opt_unknown(), &cert_id_md))
goto opthelp;
trailing_md = 1;
break;
case OPT_MULTI:
#ifdef HTTP_DAEMON
multi = atoi(opt_arg());
#endif
break;
case OPT_PROV_CASES:
if (!opt_provider(o))
goto end;
break;
}
}
/* No extra arguments. */
argc = opt_num_rest();
if (argc != 0)
goto opthelp;
if (trailing_md) {
BIO_printf(bio_err, "%s: Digest must be before -cert or -serial\n",
prog);
goto opthelp;
}
/* Have we anything to do? */
if (req == NULL && reqin == NULL
&& respin == NULL && !(port != NULL && ridx_filename != NULL))
goto opthelp;
out = bio_open_default(outfile, 'w', FORMAT_TEXT);
if (out == NULL)
goto end;
if (req == NULL && (add_nonce != 2))
add_nonce = 0;
if (req == NULL && reqin != NULL) {
derbio = bio_open_default(reqin, 'r', FORMAT_ASN1);
if (derbio == NULL)
goto end;
req = d2i_OCSP_REQUEST_bio(derbio, NULL);
BIO_free(derbio);
if (req == NULL) {
BIO_printf(bio_err, "Error reading OCSP request\n");
goto end;
}
}
if (req == NULL && port != NULL) {
#ifndef OPENSSL_NO_SOCK
acbio = http_server_init_bio(prog, port);
if (acbio == NULL)
goto end;
#else
BIO_printf(bio_err, "Cannot act as server - sockets not supported\n");
goto end;
#endif
}
if (rsignfile != NULL) {
if (rkeyfile == NULL)
rkeyfile = rsignfile;
rsigner = load_cert(rsignfile, "responder certificate");
if (rsigner == NULL) {
BIO_printf(bio_err, "Error loading responder certificate\n");
goto end;
}
if (!load_certs(rca_filename, &rca_cert, NULL, "CA certificates"))
goto end;
if (rcertfile != NULL) {
if (!load_certs(rcertfile, &rother, NULL,
"responder other certificates"))
goto end;
}
if (!app_passwd(passinarg, NULL, &passin, NULL)) {
BIO_printf(bio_err, "Error getting password\n");
goto end;
}
rkey = load_key(rkeyfile, FORMAT_PEM, 0, passin, NULL,
"responder private key");
if (rkey == NULL)
goto end;
}
if (ridx_filename != NULL
&& (rkey == NULL || rsigner == NULL || rca_cert == NULL)) {
BIO_printf(bio_err,
"Responder mode requires certificate, key, and CA.\n");
goto end;
}
if (ridx_filename != NULL) {
rdb = load_index(ridx_filename, NULL);
if (rdb == NULL || index_index(rdb) <= 0) {
ret = 1;
goto end;
}
}
#ifdef HTTP_DAEMON
if (multi && acbio != NULL)
spawn_loop(prog);
if (acbio != NULL && req_timeout > 0)
signal(SIGALRM, socket_timeout);
#endif
if (acbio != NULL)
log_message(prog, LOG_INFO, "waiting for OCSP client connections...");
redo_accept:
if (acbio != NULL) {
#ifdef HTTP_DAEMON
if (index_changed(rdb)) {
CA_DB *newrdb = load_index(ridx_filename, NULL);
if (newrdb != NULL && index_index(newrdb) > 0) {
free_index(rdb);
rdb = newrdb;
} else {
free_index(newrdb);
log_message(prog, LOG_ERR, "error reloading updated index: %s",
ridx_filename);
}
}
#endif
req = NULL;
res = do_responder(&req, &cbio, acbio, req_timeout);
if (res == 0)
goto redo_accept;
if (req == NULL) {
if (res == 1) {
resp =
OCSP_response_create(OCSP_RESPONSE_STATUS_MALFORMEDREQUEST,
NULL);
send_ocsp_response(cbio, resp);
}
goto done_resp;
}
}
if (req == NULL
&& (signfile != NULL || reqout != NULL
|| host != NULL || add_nonce || ridx_filename != NULL)) {
BIO_printf(bio_err, "Need an OCSP request for this operation!\n");
goto end;
}
if (req != NULL && add_nonce) {
if (!OCSP_request_add1_nonce(req, NULL, -1))
goto end;
}
if (signfile != NULL) {
if (keyfile == NULL)
keyfile = signfile;
signer = load_cert(signfile, "signer certificate");
if (signer == NULL) {
BIO_printf(bio_err, "Error loading signer certificate\n");
goto end;
}
if (sign_certfile != NULL) {
if (!load_certs(sign_certfile, &sign_other, NULL,
"signer certificates"))
goto end;
}
key = load_key(keyfile, FORMAT_PEM, 0, NULL, NULL,
"signer private key");
if (key == NULL)
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 != NULL)
OCSP_REQUEST_print(out, req, 0);
if (reqout != NULL) {
derbio = bio_open_default(reqout, 'w', FORMAT_ASN1);
if (derbio == NULL)
goto end;
i2d_OCSP_REQUEST_bio(derbio, req);
BIO_free(derbio);
}
if (rdb != NULL) {
make_ocsp_response(bio_err, &resp, req, rdb, rca_cert, rsigner, rkey,
rsign_md, rsign_sigopts, rother, rflags, nmin, ndays, badsig,
resp_certid_md);
if (cbio != NULL)
send_ocsp_response(cbio, resp);
} else if (host != NULL) {
#ifndef OPENSSL_NO_SOCK
resp = process_responder(req, host, path,
port, use_ssl, headers, req_timeout);
if (resp == NULL)
goto end;
#else
BIO_printf(bio_err,
"Error creating connect BIO - sockets not supported\n");
goto end;
#endif
} else if (respin != NULL) {
derbio = bio_open_default(respin, 'r', FORMAT_ASN1);
if (derbio == NULL)
goto end;
resp = d2i_OCSP_RESPONSE_bio(derbio, NULL);
BIO_free(derbio);
if (resp == NULL) {
BIO_printf(bio_err, "Error reading OCSP response\n");
goto end;
}
} else {
ret = 0;
goto end;
}
done_resp:
if (respout != NULL) {
derbio = bio_open_default(respout, 'w', FORMAT_ASN1);
if (derbio == NULL)
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 end;
}
if (resp_text)
OCSP_RESPONSE_print(out, resp, 0);
/* If running as responder don't verify our own response */
if (cbio != NULL) {
/* If not unlimited, see if we took all we should. */
if (accept_count != -1 && --accept_count <= 0) {
ret = 0;
goto end;
}
BIO_free_all(cbio);
cbio = NULL;
OCSP_REQUEST_free(req);
req = NULL;
OCSP_RESPONSE_free(resp);
resp = NULL;
goto redo_accept;
}
if (ridx_filename != NULL) {
ret = 0;
goto end;
}
if (store == NULL) {
store = setup_verify(CAfile, noCAfile, CApath, noCApath,
CAstore, noCAstore);
if (!store)
goto end;
}
if (vpmtouched)
X509_STORE_set1_param(store, vpm);
if (verify_certfile != NULL) {
if (!load_certs(verify_certfile, &verify_other, NULL,
"validator certificates"))
goto end;
}
bs = OCSP_response_get1_basic(resp);
if (bs == NULL) {
BIO_printf(bio_err, "Error parsing response\n");
goto end;
}
ret = 0;
if (!noverify) {
if (req != NULL && ((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");
ret = 1;
goto end;
}
}
i = OCSP_basic_verify(bs, verify_other, store, verify_flags);
if (i <= 0 && issuers) {
i = OCSP_basic_verify(bs, issuers, store, OCSP_TRUSTOTHER);
if (i > 0)
ERR_clear_error();
}
if (i <= 0) {
BIO_printf(bio_err, "Response Verify Failure\n");
ERR_print_errors(bio_err);
ret = 1;
} else {
BIO_printf(bio_err, "Response verify OK\n");
}
}
if (!print_ocsp_summary(out, bs, req, reqnames, ids, nsec, maxage))
ret = 1;
end:
ERR_print_errors(bio_err);
X509_free(signer);
X509_STORE_free(store);
X509_VERIFY_PARAM_free(vpm);
sk_OPENSSL_STRING_free(rsign_sigopts);
EVP_PKEY_free(key);
EVP_PKEY_free(rkey);
X509_free(cert);
sk_X509_pop_free(issuers, X509_free);
X509_free(rsigner);
sk_X509_pop_free(rca_cert, X509_free);
free_index(rdb);
BIO_free_all(cbio);
BIO_free_all(acbio);
BIO_free_all(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);
OPENSSL_free(thost);
OPENSSL_free(tport);
OPENSSL_free(tpath);
return ret;
}
#ifdef HTTP_DAEMON
static int index_changed(CA_DB *rdb)
{
struct stat sb;
if (rdb != NULL && stat(rdb->dbfname, &sb) != -1) {
if (rdb->dbst.st_mtime != sb.st_mtime
|| rdb->dbst.st_ctime != sb.st_ctime
|| rdb->dbst.st_ino != sb.st_ino
|| rdb->dbst.st_dev != sb.st_dev) {
syslog(LOG_INFO, "index file changed, reloading");
return 1;
}
}
return 0;
}
#endif
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 == NULL) {
BIO_printf(bio_err, "No issuer certificate specified\n");
return 0;
}
if (*req == NULL)
*req = OCSP_REQUEST_new();
if (*req == NULL)
goto err;
id = OCSP_cert_to_id(cert_id_md, cert, issuer);
if (id == NULL || !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;
const X509_NAME *iname;
ASN1_BIT_STRING *ikey;
ASN1_INTEGER *sno;
if (issuer == NULL) {
BIO_printf(bio_err, "No issuer certificate specified\n");
return 0;
}
if (*req == NULL)
*req = OCSP_REQUEST_new();
if (*req == NULL)
goto err;
iname = X509_get_subject_name(issuer);
ikey = X509_get0_pubkey_bitstr(issuer);
sno = s2i_ASN1_INTEGER(NULL, serial);
if (sno == NULL) {
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 == NULL || !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;
const char *name;
int i, status, reason;
ASN1_GENERALIZEDTIME *rev, *thisupd, *nextupd;
int ret = 1;
if (req == NULL || !sk_OPENSSL_STRING_num(names))
return 1;
if (bs == NULL || !sk_OCSP_CERTID_num(ids))
return 0;
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");
ret = 0;
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 ret;
}
static void make_ocsp_response(BIO *err, OCSP_RESPONSE **resp, OCSP_REQUEST *req,
CA_DB *db, STACK_OF(X509) *ca, X509 *rcert,
EVP_PKEY *rkey, const EVP_MD *rmd,
STACK_OF(OPENSSL_STRING) *sigopts,
STACK_OF(X509) *rother, unsigned long flags,
int nmin, int ndays, int badsig,
const EVP_MD *resp_md)
{
ASN1_TIME *thisupd = NULL, *nextupd = NULL;
OCSP_CERTID *cid;
OCSP_BASICRESP *bs = NULL;
int i, id_count;
EVP_MD_CTX *mctx = NULL;
EVP_PKEY_CTX *pkctx = NULL;
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_time_adj_ex(NULL, ndays, nmin * 60, NULL);
/* Examine each certificate id in the request */
for (i = 0; i < id_count; i++) {
OCSP_ONEREQ *one;
ASN1_INTEGER *serial;
char **inf;
int jj;
int found = 0;
ASN1_OBJECT *cert_id_md_oid;
const EVP_MD *cert_id_md;
OCSP_CERTID *cid_resp_md = NULL;
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 == NULL) {
*resp = OCSP_response_create(OCSP_RESPONSE_STATUS_INTERNALERROR,
NULL);
goto end;
}
for (jj = 0; jj < sk_X509_num(ca) && !found; jj++) {
X509 *ca_cert = sk_X509_value(ca, jj);
OCSP_CERTID *ca_id = OCSP_cert_to_id(cert_id_md, NULL, ca_cert);
if (OCSP_id_issuer_cmp(ca_id, cid) == 0) {
found = 1;
if (resp_md != NULL)
cid_resp_md = OCSP_cert_to_id(resp_md, NULL, ca_cert);
}
OCSP_CERTID_free(ca_id);
}
OCSP_id_get0_info(NULL, NULL, NULL, &serial, cid);
inf = lookup_serial(db, serial);
/* at this point, we can have cid be an alias of cid_resp_md */
cid = (cid_resp_md != NULL) ? cid_resp_md : cid;
if (!found) {
OCSP_basic_add1_status(bs, cid,
V_OCSP_CERTSTATUS_UNKNOWN,
0, NULL, thisupd, nextupd);
continue;
}
if (inf == NULL) {
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 != NULL)
OCSP_SINGLERESP_add1_ext_i2d(single, NID_invalidity_date,
invtm, 0, 0);
else if (inst != NULL)
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_CERTID_free(cid_resp_md);
}
OCSP_copy_nonce(bs, req);
mctx = EVP_MD_CTX_new();
if ( mctx == NULL || !EVP_DigestSignInit(mctx, &pkctx, rmd, NULL, rkey)) {
*resp = OCSP_response_create(OCSP_RESPONSE_STATUS_INTERNALERROR, NULL);
goto end;
}
for (i = 0; i < sk_OPENSSL_STRING_num(sigopts); i++) {
char *sigopt = sk_OPENSSL_STRING_value(sigopts, i);
if (pkey_ctrl_string(pkctx, sigopt) <= 0) {
BIO_printf(err, "parameter error \"%s\"\n", sigopt);
ERR_print_errors(bio_err);
*resp = OCSP_response_create(OCSP_RESPONSE_STATUS_INTERNALERROR,
NULL);
goto end;
}
}
if (!OCSP_basic_sign_ctx(bs, rcert, mctx, rother, flags)) {
*resp = OCSP_response_create(OCSP_RESPONSE_STATUS_INTERNALERROR, bs);
goto end;
}
if (badsig) {
const ASN1_OCTET_STRING *sig = OCSP_resp_get0_signature(bs);
corrupt_signature(sig);
}
*resp = OCSP_response_create(OCSP_RESPONSE_STATUS_SUCCESSFUL, bs);
end:
EVP_MD_CTX_free(mctx);
ASN1_TIME_free(thisupd);
ASN1_TIME_free(nextupd);
OCSP_BASICRESP_free(bs);
}
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 = OPENSSL_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;
}
static int do_responder(OCSP_REQUEST **preq, BIO **pcbio, BIO *acbio,
int timeout)
{
#ifndef OPENSSL_NO_SOCK
return http_server_get_asn1_req(ASN1_ITEM_rptr(OCSP_RESPONSE),
(ASN1_VALUE **)preq, NULL, pcbio, acbio,
prog, 1 /* accept_get */, timeout);
#else
BIO_printf(bio_err,
"Error getting OCSP request - sockets not supported\n");
*preq = NULL;
return 0;
#endif
}
static int send_ocsp_response(BIO *cbio, const OCSP_RESPONSE *resp)
{
#ifndef OPENSSL_NO_SOCK
return http_server_send_asn1_resp(cbio, "application/ocsp-response",
ASN1_ITEM_rptr(OCSP_RESPONSE),
(const ASN1_VALUE *)resp);
#else
BIO_printf(bio_err,
"Error sending OCSP response - sockets not supported\n");
return 0;
#endif
}
#ifndef OPENSSL_NO_SOCK
OCSP_RESPONSE *process_responder(OCSP_REQUEST *req,
const char *host, const char *path,
const char *port, int use_ssl,
STACK_OF(CONF_VALUE) *headers,
int req_timeout)
{
SSL_CTX *ctx = NULL;
OCSP_RESPONSE *resp = NULL;
if (use_ssl == 1) {
ctx = SSL_CTX_new(TLS_client_method());
if (ctx == NULL) {
BIO_printf(bio_err, "Error creating SSL context.\n");
goto end;
}
SSL_CTX_set_mode(ctx, SSL_MODE_AUTO_RETRY);
}
resp = (OCSP_RESPONSE *)
app_http_post_asn1(host, port, path, NULL, NULL /* no proxy used */,
ctx, headers, "application/ocsp-request",
(ASN1_VALUE *)req, ASN1_ITEM_rptr(OCSP_REQUEST),
req_timeout, ASN1_ITEM_rptr(OCSP_RESPONSE));
if (resp == NULL)
BIO_printf(bio_err, "Error querying OCSP responder\n");
end:
SSL_CTX_free(ctx);
return resp;
}
#endif
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