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openssl/apps/ocsp.c
Viktor Dukhovni 5fe499cb75 Actually silently ignore GET / OCSP requests 
Reviewed-by: Matt Caswell <matt@openssl.org>
2019-07-16 06:11:15 -04:00

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/*
* Copyright 2001-2018 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_NO_OCSP
NON_EMPTY_TRANSLATION_UNIT
#else
# ifdef OPENSSL_SYS_VMS
# define _XOPEN_SOURCE_EXTENDED/* So fd_set and friends get properly defined
* on OpenVMS */
# 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 "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>
# include <openssl/rand.h>
#ifndef HAVE_FORK
# if defined(OPENSSL_SYS_VMS) || defined(OPENSSL_SYS_WINDOWS)
# define HAVE_FORK 0
# else
# define HAVE_FORK 1
# endif
#endif
#if HAVE_FORK
# undef NO_FORK
#else
# define NO_FORK
#endif
# if !defined(NO_FORK) && !defined(OPENSSL_NO_SOCK) \
&& !defined(OPENSSL_NO_POSIX_IO)
# define OCSP_DAEMON
# include <sys/types.h>
# include <sys/wait.h>
# include <syslog.h>
# include <signal.h>
# define MAXERRLEN 1000 /* limit error text sent to syslog to 1000 bytes */
# else
# undef LOG_INFO
# undef LOG_WARNING
# undef LOG_ERR
# define LOG_INFO 0
# define LOG_WARNING 1
# define LOG_ERR 2
# 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 void 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 BIO *init_responder(const char *port);
static int do_responder(OCSP_REQUEST **preq, BIO **pcbio, BIO *acbio, int timeout);
static int send_ocsp_response(BIO *cbio, OCSP_RESPONSE *resp);
static void log_message(int level, const char *fmt, ...);
static char *prog;
static int multi = 0;
# ifdef OCSP_DAEMON
static int acfd = (int) INVALID_SOCKET;
static int index_changed(CA_DB *);
static void spawn_loop(void);
static int print_syslog(const char *str, size_t len, void *levPtr);
static void sock_timeout(int signum);
# endif
# ifndef OPENSSL_NO_SOCK
static OCSP_RESPONSE *query_responder(BIO *cbio, const char *host,
const char *path,
const STACK_OF(CONF_VALUE) *headers,
OCSP_REQUEST *req, int req_timeout);
# 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_NOCAFILE, OPT_NOCAPATH,
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_RCID,
OPT_V_ENUM,
OPT_MD,
OPT_MULTI
} OPTION_CHOICE;
const OPTIONS ocsp_options[] = {
{"help", OPT_HELP, '-', "Display this summary"},
{"out", OPT_OUTFILE, '>', "Output filename"},
{"timeout", OPT_TIMEOUT, 'p',
"Connection timeout (in seconds) to the OCSP responder"},
{"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"},
{"ignore_err", OPT_IGNORE_ERR, '-',
"Ignore error on OCSP request or response and continue running"},
{"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"},
{"resp_no_certs", OPT_RESP_NO_CERTS, '-',
"Don't include any certificates in response"},
{"resp_key_id", OPT_RESP_KEY_ID, '-',
"Identify response by signing certificate key ID"},
# ifdef OCSP_DAEMON
{"multi", OPT_MULTI, 'p', "run multiple responder processes"},
# endif
{"no_certs", OPT_NO_CERTS, '-',
"Don't include any certificates in signed request"},
{"no_signature_verify", OPT_NO_SIGNATURE_VERIFY, '-',
"Don't check signature on response"},
{"no_cert_verify", OPT_NO_CERT_VERIFY, '-',
"Don't check signing certificate"},
{"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"},
{"badsig", OPT_BADSIG, '-',
"Corrupt last byte of loaded OSCP response signature (for test)"},
{"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"},
{"reqin", OPT_REQIN, 's', "File with the DER-encoded request"},
{"respin", OPT_RESPIN, 's', "File with the DER-encoded response"},
{"signer", OPT_SIGNER, '<', "Certificate to sign OCSP request with"},
{"VAfile", OPT_VAFILE, '<', "Validator certificates file"},
{"sign_other", OPT_SIGN_OTHER, '<',
"Additional certificates to include in signed request"},
{"verify_other", OPT_VERIFY_OTHER, '<',
"Additional certificates to search for signer"},
{"CAfile", OPT_CAFILE, '<', "Trusted certificates file"},
{"CApath", OPT_CAPATH, '<', "Trusted certificates directory"},
{"no-CAfile", OPT_NOCAFILE, '-',
"Do not load the default certificates file"},
{"no-CApath", OPT_NOCAPATH, '-',
"Do not load certificates from the default certificates directory"},
{"validity_period", OPT_VALIDITY_PERIOD, 'u',
"Maximum validity discrepancy in seconds"},
{"status_age", OPT_STATUS_AGE, 'p', "Maximum status age 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"},
{"path", OPT_PATH, 's', "Path to use in OCSP request"},
{"issuer", OPT_ISSUER, '<', "Issuer certificate"},
{"cert", OPT_CERT, '<', "Certificate to check"},
{"serial", OPT_SERIAL, 's', "Serial number to check"},
{"index", OPT_INDEX, '<', "Certificate status index file"},
{"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)"},
{"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"},
{"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_V_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;
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 *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;
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, 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 (!OCSP_parse_url(opt_arg(), &host, &port, &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_NOCAFILE:
noCAfile = 1;
break;
case OPT_NOCAPATH:
noCApath = 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(), FORMAT_PEM, "issuer certificate");
if (issuer == NULL)
goto end;
if (issuers == NULL) {
if ((issuers = sk_X509_new_null()) == NULL)
goto end;
}
sk_X509_push(issuers, issuer);
break;
case OPT_CERT:
X509_free(cert);
cert = load_cert(opt_arg(), FORMAT_PEM, "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_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 OCSP_DAEMON
multi = atoi(opt_arg());
# endif
break;
}
}
if (trailing_md) {
BIO_printf(bio_err, "%s: Digest must be before -cert or -serial\n",
prog);
goto opthelp;
}
argc = opt_num_rest();
if (argc != 0)
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) {
acbio = init_responder(port);
if (acbio == NULL)
goto end;
}
if (rsignfile != NULL) {
if (rkeyfile == NULL)
rkeyfile = rsignfile;
rsigner = load_cert(rsignfile, FORMAT_PEM, "responder certificate");
if (rsigner == NULL) {
BIO_printf(bio_err, "Error loading responder certificate\n");
goto end;
}
if (!load_certs(rca_filename, &rca_cert, FORMAT_PEM,
NULL, "CA certificate"))
goto end;
if (rcertfile != NULL) {
if (!load_certs(rcertfile, &rother, FORMAT_PEM, NULL,
"responder other certificates"))
goto end;
}
rkey = load_key(rkeyfile, FORMAT_PEM, 0, NULL, 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 OCSP_DAEMON
if (multi && acbio != NULL)
spawn_loop();
if (acbio != NULL && req_timeout > 0)
signal(SIGALRM, sock_timeout);
#endif
if (acbio != NULL)
log_message(LOG_INFO, "waiting for OCSP client connections...");
redo_accept:
if (acbio != NULL) {
# ifdef OCSP_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(LOG_ERR, "error reloading updated index: %s",
ridx_filename);
}
}
# endif
req = NULL;
if (!do_responder(&req, &cbio, acbio, req_timeout))
goto redo_accept;
if (req == NULL) {
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, FORMAT_PEM, "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, FORMAT_PEM, 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, CApath, noCAfile, noCApath);
if (!store)
goto end;
}
if (vpmtouched)
X509_STORE_set1_param(store, vpm);
if (verify_certfile != NULL) {
if (!load_certs(verify_certfile, &verify_other, FORMAT_PEM, NULL,
"validator certificate"))
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");
}
}
print_ocsp_summary(out, bs, req, reqnames, ids, nsec, maxage);
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;
}
static void
log_message(int level, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
# ifdef OCSP_DAEMON
if (multi) {
char buf[1024];
if (vsnprintf(buf, sizeof(buf), fmt, ap) > 0) {
syslog(level, "%s", buf);
}
if (level >= LOG_ERR)
ERR_print_errors_cb(print_syslog, &level);
}
# endif
if (!multi) {
BIO_printf(bio_err, "%s: ", prog);
BIO_vprintf(bio_err, fmt, ap);
BIO_printf(bio_err, "\n");
}
va_end(ap);
}
# ifdef OCSP_DAEMON
static int print_syslog(const char *str, size_t len, void *levPtr)
{
int level = *(int *)levPtr;
int ilen = (len > MAXERRLEN) ? MAXERRLEN : len;
syslog(level, "%.*s", ilen, str);
return ilen;
}
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;
}
static void killall(int ret, pid_t *kidpids)
{
int i;
for (i = 0; i < multi; ++i)
if (kidpids[i] != 0)
(void)kill(kidpids[i], SIGTERM);
OPENSSL_free(kidpids);
sleep(1);
exit(ret);
}
static int termsig = 0;
static void noteterm (int sig)
{
termsig = sig;
}
/*
* Loop spawning up to `multi` child processes, only child processes return
* from this function. The parent process loops until receiving a termination
* signal, kills extant children and exits without returning.
*/
static void spawn_loop(void)
{
pid_t *kidpids = NULL;
int status;
int procs = 0;
int i;
openlog(prog, LOG_PID, LOG_DAEMON);
if (setpgid(0, 0)) {
syslog(LOG_ERR, "fatal: error detaching from parent process group: %s",
strerror(errno));
exit(1);
}
kidpids = app_malloc(multi * sizeof(*kidpids), "child PID array");
for (i = 0; i < multi; ++i)
kidpids[i] = 0;
signal(SIGINT, noteterm);
signal(SIGTERM, noteterm);
while (termsig == 0) {
pid_t fpid;
/*
* Wait for a child to replace when we're at the limit.
* Slow down if a child exited abnormally or waitpid() < 0
*/
while (termsig == 0 && procs >= multi) {
if ((fpid = waitpid(-1, &status, 0)) > 0) {
for (i = 0; i < procs; ++i) {
if (kidpids[i] == fpid) {
kidpids[i] = 0;
--procs;
break;
}
}
if (i >= multi) {
syslog(LOG_ERR, "fatal: internal error: "
"no matching child slot for pid: %ld",
(long) fpid);
killall(1, kidpids);
}
if (status != 0) {
if (WIFEXITED(status))
syslog(LOG_WARNING, "child process: %ld, exit status: %d",
(long)fpid, WEXITSTATUS(status));
else if (WIFSIGNALED(status))
syslog(LOG_WARNING, "child process: %ld, term signal %d%s",
(long)fpid, WTERMSIG(status),
#ifdef WCOREDUMP
WCOREDUMP(status) ? " (core dumped)" :
#endif
"");
sleep(1);
}
break;
} else if (errno != EINTR) {
syslog(LOG_ERR, "fatal: waitpid(): %s", strerror(errno));
killall(1, kidpids);
}
}
if (termsig)
break;
switch(fpid = fork()) {
case -1: /* error */
/* System critically low on memory, pause and try again later */
sleep(30);
break;
case 0: /* child */
OPENSSL_free(kidpids);
signal(SIGINT, SIG_DFL);
signal(SIGTERM, SIG_DFL);
if (termsig)
_exit(0);
if (RAND_poll() <= 0) {
syslog(LOG_ERR, "fatal: RAND_poll() failed");
_exit(1);
}
return;
default: /* parent */
for (i = 0; i < multi; ++i) {
if (kidpids[i] == 0) {
kidpids[i] = fpid;
procs++;
break;
}
}
if (i >= multi) {
syslog(LOG_ERR, "fatal: internal error: no free child slots");
killall(1, kidpids);
}
break;
}
}
/* The loop above can only break on termsig */
syslog(LOG_INFO, "terminating on signal: %d", termsig);
killall(0, kidpids);
}
# 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;
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 void 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;
if (bs == NULL || req == NULL || !sk_OPENSSL_STRING_num(names)
|| !sk_OCSP_CERTID_num(ids))
return;
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");
}
}
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;
}
/* Quick and dirty OCSP server: read in and parse input request */
static BIO *init_responder(const char *port)
{
# ifdef OPENSSL_NO_SOCK
BIO_printf(bio_err,
"Error setting up accept BIO - sockets not supported.\n");
return NULL;
# else
BIO *acbio = NULL, *bufbio = NULL;
bufbio = BIO_new(BIO_f_buffer());
if (bufbio == NULL)
goto err;
acbio = BIO_new(BIO_s_accept());
if (acbio == NULL
|| BIO_set_bind_mode(acbio, BIO_BIND_REUSEADDR) < 0
|| BIO_set_accept_port(acbio, port) < 0) {
log_message(LOG_ERR, "Error setting up accept BIO");
goto err;
}
BIO_set_accept_bios(acbio, bufbio);
bufbio = NULL;
if (BIO_do_accept(acbio) <= 0) {
log_message(LOG_ERR, "Error starting accept");
goto err;
}
return acbio;
err:
BIO_free_all(acbio);
BIO_free(bufbio);
return NULL;
# endif
}
# ifndef OPENSSL_NO_SOCK
/*
* Decode %xx URL-decoding in-place. Ignores mal-formed sequences.
*/
static int urldecode(char *p)
{
unsigned char *out = (unsigned char *)p;
unsigned char *save = out;
for (; *p; p++) {
if (*p != '%')
*out++ = *p;
else if (isxdigit(_UC(p[1])) && isxdigit(_UC(p[2]))) {
/* Don't check, can't fail because of ixdigit() call. */
*out++ = (OPENSSL_hexchar2int(p[1]) << 4)
| OPENSSL_hexchar2int(p[2]);
p += 2;
}
else
return -1;
}
*out = '\0';
return (int)(out - save);
}
# endif
# ifdef OCSP_DAEMON
static void sock_timeout(int signum)
{
if (acfd != (int)INVALID_SOCKET)
(void)shutdown(acfd, SHUT_RD);
}
# endif
static int do_responder(OCSP_REQUEST **preq, BIO **pcbio, BIO *acbio,
int timeout)
{
# ifdef OPENSSL_NO_SOCK
return 0;
# else
int len;
OCSP_REQUEST *req = NULL;
char inbuf[2048], reqbuf[2048];
char *p, *q;
BIO *cbio = NULL, *getbio = NULL, *b64 = NULL;
const char *client;
*preq = NULL;
/* Connection loss before accept() is routine, ignore silently */
if (BIO_do_accept(acbio) <= 0)
return 0;
cbio = BIO_pop(acbio);
*pcbio = cbio;
client = BIO_get_peer_name(cbio);
# ifdef OCSP_DAEMON
if (timeout > 0) {
(void) BIO_get_fd(cbio, &acfd);
alarm(timeout);
}
# endif
/* Read the request line. */
len = BIO_gets(cbio, reqbuf, sizeof(reqbuf));
if (len <= 0)
goto out;
if (strncmp(reqbuf, "GET ", 4) == 0) {
/* Expecting GET {sp} /URL {sp} HTTP/1.x */
for (p = reqbuf + 4; *p == ' '; ++p)
continue;
if (*p != '/') {
log_message(LOG_INFO, "Invalid request -- bad URL: %s", client);
goto out;
}
p++;
/* Splice off the HTTP version identifier. */
for (q = p; *q; q++)
if (*q == ' ')
break;
if (strncmp(q, " HTTP/1.", 8) != 0) {
log_message(LOG_INFO,
"Invalid request -- bad HTTP version: %s", client);
goto out;
}
*q = '\0';
/*
* Skip "GET / HTTP..." requests often used by load-balancers. Note:
* 'p' was incremented above to point to the first byte *after* the
* leading slash, so with 'GET / ' it is now an empty string.
*/
if (p[0] == '\0')
goto out;
len = urldecode(p);
if (len <= 0) {
log_message(LOG_INFO,
"Invalid request -- bad URL encoding: %s", client);
goto out;
}
if ((getbio = BIO_new_mem_buf(p, len)) == NULL
|| (b64 = BIO_new(BIO_f_base64())) == NULL) {
log_message(LOG_ERR, "Could not allocate base64 bio: %s", client);
goto out;
}
BIO_set_flags(b64, BIO_FLAGS_BASE64_NO_NL);
getbio = BIO_push(b64, getbio);
} else if (strncmp(reqbuf, "POST ", 5) != 0) {
log_message(LOG_INFO, "Invalid request -- bad HTTP verb: %s", client);
goto out;
}
/* Read and skip past the headers. */
for (;;) {
len = BIO_gets(cbio, inbuf, sizeof(inbuf));
if (len <= 0)
goto out;
if ((inbuf[0] == '\r') || (inbuf[0] == '\n'))
break;
}
# ifdef OCSP_DAEMON
/* Clear alarm before we close the client socket */
alarm(0);
timeout = 0;
# endif
/* Try to read OCSP request */
if (getbio != NULL) {
req = d2i_OCSP_REQUEST_bio(getbio, NULL);
BIO_free_all(getbio);
} else {
req = d2i_OCSP_REQUEST_bio(cbio, NULL);
}
if (req == NULL)
log_message(LOG_ERR, "Error parsing OCSP request");
*preq = req;
out:
# ifdef OCSP_DAEMON
if (timeout > 0)
alarm(0);
acfd = (int)INVALID_SOCKET;
# endif
return 1;
# endif
}
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 == NULL)
return 0;
BIO_printf(cbio, http_resp, i2d_OCSP_RESPONSE(resp, NULL));
i2d_OCSP_RESPONSE_bio(cbio, resp);
(void)BIO_flush(cbio);
return 1;
}
# ifndef OPENSSL_NO_SOCK
static OCSP_RESPONSE *query_responder(BIO *cbio, const char *host,
const char *path,
const STACK_OF(CONF_VALUE) *headers,
OCSP_REQUEST *req, int req_timeout)
{
int fd;
int rv;
int i;
int add_host = 1;
OCSP_REQ_CTX *ctx = NULL;
OCSP_RESPONSE *rsp = NULL;
fd_set confds;
struct timeval tv;
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(bio_err, "Error connecting BIO\n");
return NULL;
}
if (BIO_get_fd(cbio, &fd) < 0) {
BIO_puts(bio_err, "Can't get connection fd\n");
goto err;
}
if (req_timeout != -1 && rv <= 0) {
FD_ZERO(&confds);
openssl_fdset(fd, &confds);
tv.tv_usec = 0;
tv.tv_sec = req_timeout;
rv = select(fd + 1, NULL, (void *)&confds, NULL, &tv);
if (rv == 0) {
BIO_puts(bio_err, "Timeout on connect\n");
return NULL;
}
}
ctx = OCSP_sendreq_new(cbio, path, NULL, -1);
if (ctx == NULL)
return NULL;
for (i = 0; i < sk_CONF_VALUE_num(headers); i++) {
CONF_VALUE *hdr = sk_CONF_VALUE_value(headers, i);
if (add_host == 1 && strcasecmp("host", hdr->name) == 0)
add_host = 0;
if (!OCSP_REQ_CTX_add1_header(ctx, hdr->name, hdr->value))
goto err;
}
if (add_host == 1 && OCSP_REQ_CTX_add1_header(ctx, "Host", host) == 0)
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;
FD_ZERO(&confds);
openssl_fdset(fd, &confds);
tv.tv_usec = 0;
tv.tv_sec = req_timeout;
if (BIO_should_read(cbio)) {
rv = select(fd + 1, (void *)&confds, NULL, NULL, &tv);
} else if (BIO_should_write(cbio)) {
rv = select(fd + 1, NULL, (void *)&confds, NULL, &tv);
} else {
BIO_puts(bio_err, "Unexpected retry condition\n");
goto err;
}
if (rv == 0) {
BIO_puts(bio_err, "Timeout on request\n");
break;
}
if (rv == -1) {
BIO_puts(bio_err, "Select error\n");
break;
}
}
err:
OCSP_REQ_CTX_free(ctx);
return rsp;
}
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)
{
BIO *cbio = NULL;
SSL_CTX *ctx = NULL;
OCSP_RESPONSE *resp = NULL;
cbio = BIO_new_connect(host);
if (cbio == NULL) {
BIO_printf(bio_err, "Error creating connect BIO\n");
goto end;
}
if (port != NULL)
BIO_set_conn_port(cbio, port);
if (use_ssl == 1) {
BIO *sbio;
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);
sbio = BIO_new_ssl(ctx, 1);
cbio = BIO_push(sbio, cbio);
}
resp = query_responder(cbio, host, path, headers, req, req_timeout);
if (resp == NULL)
BIO_printf(bio_err, "Error querying OCSP responder\n");
end:
BIO_free_all(cbio);
SSL_CTX_free(ctx);
return resp;
}
# endif
#endif
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