2 * Copyright 2001-2018 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
10 #include <openssl/opensslconf.h>
12 #ifdef OPENSSL_NO_OCSP
13 NON_EMPTY_TRANSLATION_UNIT
15 # ifdef OPENSSL_SYS_VMS
16 # define _XOPEN_SOURCE_EXTENDED/* So fd_set and friends get properly defined
26 /* Needs to be included before the openssl headers */
29 # include "internal/sockets.h"
30 # include <openssl/e_os2.h>
31 # include <openssl/crypto.h>
32 # include <openssl/err.h>
33 # include <openssl/ssl.h>
34 # include <openssl/evp.h>
35 # include <openssl/bn.h>
36 # include <openssl/x509v3.h>
37 # include <openssl/rand.h>
40 # if defined(OPENSSL_SYS_VMS) || defined(OPENSSL_SYS_WINDOWS)
53 # if !defined(NO_FORK) && !defined(OPENSSL_NO_SOCK) \
54 && !defined(OPENSSL_NO_POSIX_IO)
56 # include <sys/types.h>
57 # include <sys/wait.h>
60 # define MAXERRLEN 1000 /* limit error text sent to syslog to 1000 bytes */
66 # define LOG_WARNING 1
70 # if defined(OPENSSL_SYS_VXWORKS)
72 int setpgid(pid_t pid, pid_t pgid)
84 /* Maximum leeway in validity period: default 5 minutes */
85 # define MAX_VALIDITY_PERIOD (5 * 60)
87 static int add_ocsp_cert(OCSP_REQUEST **req, X509 *cert,
88 const EVP_MD *cert_id_md, X509 *issuer,
89 STACK_OF(OCSP_CERTID) *ids);
90 static int add_ocsp_serial(OCSP_REQUEST **req, char *serial,
91 const EVP_MD *cert_id_md, X509 *issuer,
92 STACK_OF(OCSP_CERTID) *ids);
93 static void print_ocsp_summary(BIO *out, OCSP_BASICRESP *bs, OCSP_REQUEST *req,
94 STACK_OF(OPENSSL_STRING) *names,
95 STACK_OF(OCSP_CERTID) *ids, long nsec,
97 static void make_ocsp_response(BIO *err, OCSP_RESPONSE **resp, OCSP_REQUEST *req,
98 CA_DB *db, STACK_OF(X509) *ca, X509 *rcert,
99 EVP_PKEY *rkey, const EVP_MD *md,
100 STACK_OF(OPENSSL_STRING) *sigopts,
101 STACK_OF(X509) *rother, unsigned long flags,
102 int nmin, int ndays, int badsig,
103 const EVP_MD *resp_md);
105 static char **lookup_serial(CA_DB *db, ASN1_INTEGER *ser);
106 static BIO *init_responder(const char *port);
107 static int do_responder(OCSP_REQUEST **preq, BIO **pcbio, BIO *acbio, int timeout);
108 static int send_ocsp_response(BIO *cbio, OCSP_RESPONSE *resp);
109 static void log_message(int level, const char *fmt, ...);
111 static int multi = 0;
114 static int acfd = (int) INVALID_SOCKET;
115 static int index_changed(CA_DB *);
116 static void spawn_loop(void);
117 static int print_syslog(const char *str, size_t len, void *levPtr);
118 static void socket_timeout(int signum);
121 typedef enum OPTION_choice {
122 OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
123 OPT_OUTFILE, OPT_TIMEOUT, OPT_URL, OPT_HOST, OPT_PORT,
124 OPT_IGNORE_ERR, OPT_NOVERIFY, OPT_NONCE, OPT_NO_NONCE,
125 OPT_RESP_NO_CERTS, OPT_RESP_KEY_ID, OPT_NO_CERTS,
126 OPT_NO_SIGNATURE_VERIFY, OPT_NO_CERT_VERIFY, OPT_NO_CHAIN,
127 OPT_NO_CERT_CHECKS, OPT_NO_EXPLICIT, OPT_TRUST_OTHER,
128 OPT_NO_INTERN, OPT_BADSIG, OPT_TEXT, OPT_REQ_TEXT, OPT_RESP_TEXT,
129 OPT_REQIN, OPT_RESPIN, OPT_SIGNER, OPT_VAFILE, OPT_SIGN_OTHER,
130 OPT_VERIFY_OTHER, OPT_CAFILE, OPT_CAPATH, OPT_CASTORE, OPT_NOCAFILE,
131 OPT_NOCAPATH, OPT_NOCASTORE,
132 OPT_VALIDITY_PERIOD, OPT_STATUS_AGE, OPT_SIGNKEY, OPT_REQOUT,
133 OPT_RESPOUT, OPT_PATH, OPT_ISSUER, OPT_CERT, OPT_SERIAL,
134 OPT_INDEX, OPT_CA, OPT_NMIN, OPT_REQUEST, OPT_NDAYS, OPT_RSIGNER,
135 OPT_RKEY, OPT_ROTHER, OPT_RMD, OPT_RSIGOPT, OPT_HEADER,
140 OPT_MULTI, OPT_PROV_ENUM
143 const OPTIONS ocsp_options[] = {
144 OPT_SECTION("General"),
145 {"help", OPT_HELP, '-', "Display this summary"},
146 {"ignore_err", OPT_IGNORE_ERR, '-',
147 "Ignore error on OCSP request or response and continue running"},
148 {"CAfile", OPT_CAFILE, '<', "Trusted certificates file"},
149 {"CApath", OPT_CAPATH, '<', "Trusted certificates directory"},
150 {"CAstore", OPT_CASTORE, ':', "Trusted certificates store URI"},
151 {"no-CAfile", OPT_NOCAFILE, '-',
152 "Do not load the default certificates file"},
153 {"no-CApath", OPT_NOCAPATH, '-',
154 "Do not load certificates from the default certificates directory"},
155 {"no-CAstore", OPT_NOCAPATH, '-',
156 "Do not load certificates from the default certificates store"},
158 OPT_SECTION("Responder"),
159 {"timeout", OPT_TIMEOUT, 'p',
160 "Connection timeout (in seconds) to the OCSP responder"},
161 {"resp_no_certs", OPT_RESP_NO_CERTS, '-',
162 "Don't include any certificates in response"},
164 {"multi", OPT_MULTI, 'p', "run multiple responder processes"},
166 {"no_certs", OPT_NO_CERTS, '-',
167 "Don't include any certificates in signed request"},
168 {"badsig", OPT_BADSIG, '-',
169 "Corrupt last byte of loaded OSCP response signature (for test)"},
170 {"CA", OPT_CA, '<', "CA certificate"},
171 {"nmin", OPT_NMIN, 'p', "Number of minutes before next update"},
172 {"nrequest", OPT_REQUEST, 'p',
173 "Number of requests to accept (default unlimited)"},
174 {"reqin", OPT_REQIN, 's', "File with the DER-encoded request"},
175 {"signer", OPT_SIGNER, '<', "Certificate to sign OCSP request with"},
176 {"sign_other", OPT_SIGN_OTHER, '<',
177 "Additional certificates to include in signed request"},
178 {"index", OPT_INDEX, '<', "Certificate status index file"},
179 {"ndays", OPT_NDAYS, 'p', "Number of days before next update"},
180 {"rsigner", OPT_RSIGNER, '<',
181 "Responder certificate to sign responses with"},
182 {"rkey", OPT_RKEY, '<', "Responder key to sign responses with"},
183 {"passin", OPT_PASSIN, 's', "Responder key pass phrase source"},
184 {"rother", OPT_ROTHER, '<', "Other certificates to include in response"},
185 {"rmd", OPT_RMD, 's', "Digest Algorithm to use in signature of OCSP response"},
186 {"rsigopt", OPT_RSIGOPT, 's', "OCSP response signature parameter in n:v form"},
187 {"header", OPT_HEADER, 's', "key=value header to add"},
188 {"rcid", OPT_RCID, 's', "Use specified algorithm for cert id in response"},
189 {"", OPT_MD, '-', "Any supported digest algorithm (sha1,sha256, ... )"},
191 OPT_SECTION("Client"),
192 {"url", OPT_URL, 's', "Responder URL"},
193 {"host", OPT_HOST, 's', "TCP/IP hostname:port to connect to"},
194 {"port", OPT_PORT, 'p', "Port to run responder on"},
195 {"out", OPT_OUTFILE, '>', "Output filename"},
196 {"noverify", OPT_NOVERIFY, '-', "Don't verify response at all"},
197 {"nonce", OPT_NONCE, '-', "Add OCSP nonce to request"},
198 {"no_nonce", OPT_NO_NONCE, '-', "Don't add OCSP nonce to request"},
199 {"no_signature_verify", OPT_NO_SIGNATURE_VERIFY, '-',
200 "Don't check signature on response"},
201 {"resp_key_id", OPT_RESP_KEY_ID, '-',
202 "Identify response by signing certificate key ID"},
203 {"no_cert_verify", OPT_NO_CERT_VERIFY, '-',
204 "Don't check signing certificate"},
205 {"text", OPT_TEXT, '-', "Print text form of request and response"},
206 {"req_text", OPT_REQ_TEXT, '-', "Print text form of request"},
207 {"resp_text", OPT_RESP_TEXT, '-', "Print text form of response"},
208 {"no_chain", OPT_NO_CHAIN, '-', "Don't chain verify response"},
209 {"no_cert_checks", OPT_NO_CERT_CHECKS, '-',
210 "Don't do additional checks on signing certificate"},
211 {"no_explicit", OPT_NO_EXPLICIT, '-',
212 "Do not explicitly check the chain, just verify the root"},
213 {"trust_other", OPT_TRUST_OTHER, '-',
214 "Don't verify additional certificates"},
215 {"no_intern", OPT_NO_INTERN, '-',
216 "Don't search certificates contained in response for signer"},
217 {"respin", OPT_RESPIN, 's', "File with the DER-encoded response"},
218 {"VAfile", OPT_VAFILE, '<', "Validator certificates file"},
219 {"verify_other", OPT_VERIFY_OTHER, '<',
220 "Additional certificates to search for signer"},
221 {"path", OPT_PATH, 's', "Path to use in OCSP request"},
222 {"cert", OPT_CERT, '<', "Certificate to check"},
223 {"serial", OPT_SERIAL, 's', "Serial number to check"},
224 {"validity_period", OPT_VALIDITY_PERIOD, 'u',
225 "Maximum validity discrepancy in seconds"},
226 {"signkey", OPT_SIGNKEY, 's', "Private key to sign OCSP request with"},
227 {"reqout", OPT_REQOUT, 's', "Output file for the DER-encoded request"},
228 {"respout", OPT_RESPOUT, 's', "Output file for the DER-encoded response"},
229 {"issuer", OPT_ISSUER, '<', "Issuer certificate"},
230 {"status_age", OPT_STATUS_AGE, 'p', "Maximum status age in seconds"},
237 int ocsp_main(int argc, char **argv)
239 BIO *acbio = NULL, *cbio = NULL, *derbio = NULL, *out = NULL;
240 const EVP_MD *cert_id_md = NULL, *rsign_md = NULL;
241 STACK_OF(OPENSSL_STRING) *rsign_sigopts = NULL;
244 EVP_PKEY *key = NULL, *rkey = NULL;
245 OCSP_BASICRESP *bs = NULL;
246 OCSP_REQUEST *req = NULL;
247 OCSP_RESPONSE *resp = NULL;
248 STACK_OF(CONF_VALUE) *headers = NULL;
249 STACK_OF(OCSP_CERTID) *ids = NULL;
250 STACK_OF(OPENSSL_STRING) *reqnames = NULL;
251 STACK_OF(X509) *sign_other = NULL, *verify_other = NULL, *rother = NULL;
252 STACK_OF(X509) *issuers = NULL;
253 X509 *issuer = NULL, *cert = NULL;
254 STACK_OF(X509) *rca_cert = NULL;
255 const EVP_MD *resp_certid_md = NULL;
256 X509 *signer = NULL, *rsigner = NULL;
257 X509_STORE *store = NULL;
258 X509_VERIFY_PARAM *vpm = NULL;
259 const char *CAfile = NULL, *CApath = NULL, *CAstore = NULL;
260 char *header, *value;
261 char *host = NULL, *port = NULL, *path = "/", *outfile = NULL;
262 char *rca_filename = NULL, *reqin = NULL, *respin = NULL;
263 char *reqout = NULL, *respout = NULL, *ridx_filename = NULL;
264 char *rsignfile = NULL, *rkeyfile = NULL;
265 char *passinarg = NULL, *passin = NULL;
266 char *sign_certfile = NULL, *verify_certfile = NULL, *rcertfile = NULL;
267 char *signfile = NULL, *keyfile = NULL;
268 char *thost = NULL, *tport = NULL, *tpath = NULL;
269 int noCAfile = 0, noCApath = 0, noCAstore = 0;
270 int accept_count = -1, add_nonce = 1, noverify = 0, use_ssl = -1;
271 int vpmtouched = 0, badsig = 0, i, ignore_err = 0, nmin = 0, ndays = -1;
272 int req_text = 0, resp_text = 0, ret = 1;
273 int req_timeout = -1;
274 long nsec = MAX_VALIDITY_PERIOD, maxage = -1;
275 unsigned long sign_flags = 0, verify_flags = 0, rflags = 0;
278 reqnames = sk_OPENSSL_STRING_new_null();
279 if (reqnames == NULL)
281 ids = sk_OCSP_CERTID_new_null();
284 if ((vpm = X509_VERIFY_PARAM_new()) == NULL)
287 prog = opt_init(argc, argv, ocsp_options);
288 while ((o = opt_next()) != OPT_EOF) {
293 BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
297 opt_help(ocsp_options);
303 #ifndef OPENSSL_NO_SOCK
304 req_timeout = atoi(opt_arg());
311 thost = tport = tpath = NULL;
312 if (!OSSL_HTTP_parse_url(opt_arg(),
313 &host, &port, &path, &use_ssl)) {
314 BIO_printf(bio_err, "%s Error parsing URL\n", prog);
339 case OPT_RESP_NO_CERTS:
340 rflags |= OCSP_NOCERTS;
342 case OPT_RESP_KEY_ID:
343 rflags |= OCSP_RESPID_KEY;
346 sign_flags |= OCSP_NOCERTS;
348 case OPT_NO_SIGNATURE_VERIFY:
349 verify_flags |= OCSP_NOSIGS;
351 case OPT_NO_CERT_VERIFY:
352 verify_flags |= OCSP_NOVERIFY;
355 verify_flags |= OCSP_NOCHAIN;
357 case OPT_NO_CERT_CHECKS:
358 verify_flags |= OCSP_NOCHECKS;
360 case OPT_NO_EXPLICIT:
361 verify_flags |= OCSP_NOEXPLICIT;
363 case OPT_TRUST_OTHER:
364 verify_flags |= OCSP_TRUSTOTHER;
367 verify_flags |= OCSP_NOINTERN;
373 req_text = resp_text = 1;
388 signfile = opt_arg();
391 verify_certfile = opt_arg();
392 verify_flags |= OCSP_TRUSTOTHER;
395 sign_certfile = opt_arg();
397 case OPT_VERIFY_OTHER:
398 verify_certfile = opt_arg();
419 if (!opt_verify(o, vpm))
423 case OPT_VALIDITY_PERIOD:
424 opt_long(opt_arg(), &nsec);
427 opt_long(opt_arg(), &maxage);
442 issuer = load_cert(opt_arg(), FORMAT_PEM, "issuer certificate");
445 if (issuers == NULL) {
446 if ((issuers = sk_X509_new_null()) == NULL)
449 if (!sk_X509_push(issuers, issuer))
454 cert = load_cert(opt_arg(), FORMAT_PEM, "certificate");
457 if (cert_id_md == NULL)
458 cert_id_md = EVP_sha1();
459 if (!add_ocsp_cert(&req, cert, cert_id_md, issuer, ids))
461 if (!sk_OPENSSL_STRING_push(reqnames, opt_arg()))
466 if (cert_id_md == NULL)
467 cert_id_md = EVP_sha1();
468 if (!add_ocsp_serial(&req, opt_arg(), cert_id_md, issuer, ids))
470 if (!sk_OPENSSL_STRING_push(reqnames, opt_arg()))
475 ridx_filename = opt_arg();
478 rca_filename = opt_arg();
481 opt_int(opt_arg(), &nmin);
486 opt_int(opt_arg(), &accept_count);
489 ndays = atoi(opt_arg());
492 rsignfile = opt_arg();
495 rkeyfile = opt_arg();
498 passinarg = opt_arg();
501 rcertfile = opt_arg();
503 case OPT_RMD: /* Response MessageDigest */
504 if (!opt_md(opt_arg(), &rsign_md))
508 if (rsign_sigopts == NULL)
509 rsign_sigopts = sk_OPENSSL_STRING_new_null();
510 if (rsign_sigopts == NULL || !sk_OPENSSL_STRING_push(rsign_sigopts, opt_arg()))
515 value = strchr(header, '=');
517 BIO_printf(bio_err, "Missing = in header key=value\n");
521 if (!X509V3_add_value(header, value, &headers))
525 resp_certid_md = EVP_get_digestbyname(opt_arg());
526 if (resp_certid_md == NULL)
532 "%s: Digest must be before -cert or -serial\n",
536 if (!opt_md(opt_unknown(), &cert_id_md))
542 multi = atoi(opt_arg());
546 if (!opt_provider(o))
552 BIO_printf(bio_err, "%s: Digest must be before -cert or -serial\n",
556 argc = opt_num_rest();
560 /* Have we anything to do? */
561 if (req == NULL && reqin == NULL
562 && respin == NULL && !(port != NULL && ridx_filename != NULL))
565 out = bio_open_default(outfile, 'w', FORMAT_TEXT);
569 if (req == NULL && (add_nonce != 2))
572 if (req == NULL && reqin != NULL) {
573 derbio = bio_open_default(reqin, 'r', FORMAT_ASN1);
576 req = d2i_OCSP_REQUEST_bio(derbio, NULL);
579 BIO_printf(bio_err, "Error reading OCSP request\n");
584 if (req == NULL && port != NULL) {
585 acbio = init_responder(port);
590 if (rsignfile != NULL) {
591 if (rkeyfile == NULL)
592 rkeyfile = rsignfile;
593 rsigner = load_cert(rsignfile, FORMAT_PEM, "responder certificate");
594 if (rsigner == NULL) {
595 BIO_printf(bio_err, "Error loading responder certificate\n");
598 if (!load_certs(rca_filename, &rca_cert, FORMAT_PEM,
599 NULL, "CA certificate"))
601 if (rcertfile != NULL) {
602 if (!load_certs(rcertfile, &rother, FORMAT_PEM, NULL,
603 "responder other certificates"))
606 if (!app_passwd(passinarg, NULL, &passin, NULL)) {
607 BIO_printf(bio_err, "Error getting password\n");
610 rkey = load_key(rkeyfile, FORMAT_PEM, 0, passin, NULL,
611 "responder private key");
616 if (ridx_filename != NULL
617 && (rkey == NULL || rsigner == NULL || rca_cert == NULL)) {
619 "Responder mode requires certificate, key, and CA.\n");
623 if (ridx_filename != NULL) {
624 rdb = load_index(ridx_filename, NULL);
625 if (rdb == NULL || index_index(rdb) <= 0) {
632 if (multi && acbio != NULL)
634 if (acbio != NULL && req_timeout > 0)
635 signal(SIGALRM, socket_timeout);
639 log_message(LOG_INFO, "waiting for OCSP client connections...");
645 if (index_changed(rdb)) {
646 CA_DB *newrdb = load_index(ridx_filename, NULL);
648 if (newrdb != NULL && index_index(newrdb) > 0) {
653 log_message(LOG_ERR, "error reloading updated index: %s",
660 if (!do_responder(&req, &cbio, acbio, req_timeout))
665 OCSP_response_create(OCSP_RESPONSE_STATUS_MALFORMEDREQUEST,
667 send_ocsp_response(cbio, resp);
673 && (signfile != NULL || reqout != NULL
674 || host != NULL || add_nonce || ridx_filename != NULL)) {
675 BIO_printf(bio_err, "Need an OCSP request for this operation!\n");
679 if (req != NULL && add_nonce) {
680 if (!OCSP_request_add1_nonce(req, NULL, -1))
684 if (signfile != NULL) {
687 signer = load_cert(signfile, FORMAT_PEM, "signer certificate");
688 if (signer == NULL) {
689 BIO_printf(bio_err, "Error loading signer certificate\n");
692 if (sign_certfile != NULL) {
693 if (!load_certs(sign_certfile, &sign_other, FORMAT_PEM, NULL,
694 "signer certificates"))
697 key = load_key(keyfile, FORMAT_PEM, 0, NULL, NULL,
698 "signer private key");
702 if (!OCSP_request_sign
703 (req, signer, key, NULL, sign_other, sign_flags)) {
704 BIO_printf(bio_err, "Error signing OCSP request\n");
709 if (req_text && req != NULL)
710 OCSP_REQUEST_print(out, req, 0);
712 if (reqout != NULL) {
713 derbio = bio_open_default(reqout, 'w', FORMAT_ASN1);
716 i2d_OCSP_REQUEST_bio(derbio, req);
721 make_ocsp_response(bio_err, &resp, req, rdb, rca_cert, rsigner, rkey,
722 rsign_md, rsign_sigopts, rother, rflags, nmin, ndays, badsig,
725 send_ocsp_response(cbio, resp);
726 } else if (host != NULL) {
727 # ifndef OPENSSL_NO_SOCK
728 resp = process_responder(req, host, path,
729 port, use_ssl, headers, req_timeout);
734 "Error creating connect BIO - sockets not supported.\n");
737 } else if (respin != NULL) {
738 derbio = bio_open_default(respin, 'r', FORMAT_ASN1);
741 resp = d2i_OCSP_RESPONSE_bio(derbio, NULL);
744 BIO_printf(bio_err, "Error reading OCSP response\n");
754 if (respout != NULL) {
755 derbio = bio_open_default(respout, 'w', FORMAT_ASN1);
758 i2d_OCSP_RESPONSE_bio(derbio, resp);
762 i = OCSP_response_status(resp);
763 if (i != OCSP_RESPONSE_STATUS_SUCCESSFUL) {
764 BIO_printf(out, "Responder Error: %s (%d)\n",
765 OCSP_response_status_str(i), i);
771 OCSP_RESPONSE_print(out, resp, 0);
773 /* If running as responder don't verify our own response */
775 /* If not unlimited, see if we took all we should. */
776 if (accept_count != -1 && --accept_count <= 0) {
782 OCSP_REQUEST_free(req);
784 OCSP_RESPONSE_free(resp);
788 if (ridx_filename != NULL) {
794 store = setup_verify(CAfile, noCAfile, CApath, noCApath,
800 X509_STORE_set1_param(store, vpm);
801 if (verify_certfile != NULL) {
802 if (!load_certs(verify_certfile, &verify_other, FORMAT_PEM, NULL,
803 "validator certificate"))
807 bs = OCSP_response_get1_basic(resp);
809 BIO_printf(bio_err, "Error parsing response\n");
816 if (req != NULL && ((i = OCSP_check_nonce(req, bs)) <= 0)) {
818 BIO_printf(bio_err, "WARNING: no nonce in response\n");
820 BIO_printf(bio_err, "Nonce Verify error\n");
826 i = OCSP_basic_verify(bs, verify_other, store, verify_flags);
827 if (i <= 0 && issuers) {
828 i = OCSP_basic_verify(bs, issuers, store, OCSP_TRUSTOTHER);
833 BIO_printf(bio_err, "Response Verify Failure\n");
834 ERR_print_errors(bio_err);
837 BIO_printf(bio_err, "Response verify OK\n");
841 print_ocsp_summary(out, bs, req, reqnames, ids, nsec, maxage);
844 ERR_print_errors(bio_err);
846 X509_STORE_free(store);
847 X509_VERIFY_PARAM_free(vpm);
848 sk_OPENSSL_STRING_free(rsign_sigopts);
852 sk_X509_pop_free(issuers, X509_free);
854 sk_X509_pop_free(rca_cert, X509_free);
859 OCSP_REQUEST_free(req);
860 OCSP_RESPONSE_free(resp);
861 OCSP_BASICRESP_free(bs);
862 sk_OPENSSL_STRING_free(reqnames);
863 sk_OCSP_CERTID_free(ids);
864 sk_X509_pop_free(sign_other, X509_free);
865 sk_X509_pop_free(verify_other, X509_free);
866 sk_CONF_VALUE_pop_free(headers, X509V3_conf_free);
875 log_message(int level, const char *fmt, ...)
883 if (vsnprintf(buf, sizeof(buf), fmt, ap) > 0) {
884 syslog(level, "%s", buf);
886 if (level >= LOG_ERR)
887 ERR_print_errors_cb(print_syslog, &level);
891 BIO_printf(bio_err, "%s: ", prog);
892 BIO_vprintf(bio_err, fmt, ap);
893 BIO_printf(bio_err, "\n");
900 static int print_syslog(const char *str, size_t len, void *levPtr)
902 int level = *(int *)levPtr;
903 int ilen = (len > MAXERRLEN) ? MAXERRLEN : len;
905 syslog(level, "%.*s", ilen, str);
910 static int index_changed(CA_DB *rdb)
914 if (rdb != NULL && stat(rdb->dbfname, &sb) != -1) {
915 if (rdb->dbst.st_mtime != sb.st_mtime
916 || rdb->dbst.st_ctime != sb.st_ctime
917 || rdb->dbst.st_ino != sb.st_ino
918 || rdb->dbst.st_dev != sb.st_dev) {
919 syslog(LOG_INFO, "index file changed, reloading");
926 static void killall(int ret, pid_t *kidpids)
930 for (i = 0; i < multi; ++i)
932 (void)kill(kidpids[i], SIGTERM);
933 OPENSSL_free(kidpids);
938 static int termsig = 0;
940 static void noteterm (int sig)
946 * Loop spawning up to `multi` child processes, only child processes return
947 * from this function. The parent process loops until receiving a termination
948 * signal, kills extant children and exits without returning.
950 static void spawn_loop(void)
952 pid_t *kidpids = NULL;
957 openlog(prog, LOG_PID, LOG_DAEMON);
960 syslog(LOG_ERR, "fatal: error detaching from parent process group: %s",
964 kidpids = app_malloc(multi * sizeof(*kidpids), "child PID array");
965 for (i = 0; i < multi; ++i)
968 signal(SIGINT, noteterm);
969 signal(SIGTERM, noteterm);
971 while (termsig == 0) {
975 * Wait for a child to replace when we're at the limit.
976 * Slow down if a child exited abnormally or waitpid() < 0
978 while (termsig == 0 && procs >= multi) {
979 if ((fpid = waitpid(-1, &status, 0)) > 0) {
980 for (i = 0; i < procs; ++i) {
981 if (kidpids[i] == fpid) {
988 syslog(LOG_ERR, "fatal: internal error: "
989 "no matching child slot for pid: %ld",
994 if (WIFEXITED(status))
995 syslog(LOG_WARNING, "child process: %ld, exit status: %d",
996 (long)fpid, WEXITSTATUS(status));
997 else if (WIFSIGNALED(status))
998 syslog(LOG_WARNING, "child process: %ld, term signal %d%s",
999 (long)fpid, WTERMSIG(status),
1001 WCOREDUMP(status) ? " (core dumped)" :
1007 } else if (errno != EINTR) {
1008 syslog(LOG_ERR, "fatal: waitpid(): %s", strerror(errno));
1009 killall(1, kidpids);
1015 switch(fpid = fork()) {
1016 case -1: /* error */
1017 /* System critically low on memory, pause and try again later */
1021 OPENSSL_free(kidpids);
1022 signal(SIGINT, SIG_DFL);
1023 signal(SIGTERM, SIG_DFL);
1026 if (RAND_poll() <= 0) {
1027 syslog(LOG_ERR, "fatal: RAND_poll() failed");
1031 default: /* parent */
1032 for (i = 0; i < multi; ++i) {
1033 if (kidpids[i] == 0) {
1040 syslog(LOG_ERR, "fatal: internal error: no free child slots");
1041 killall(1, kidpids);
1047 /* The loop above can only break on termsig */
1048 syslog(LOG_INFO, "terminating on signal: %d", termsig);
1049 killall(0, kidpids);
1053 static int add_ocsp_cert(OCSP_REQUEST **req, X509 *cert,
1054 const EVP_MD *cert_id_md, X509 *issuer,
1055 STACK_OF(OCSP_CERTID) *ids)
1059 if (issuer == NULL) {
1060 BIO_printf(bio_err, "No issuer certificate specified\n");
1064 *req = OCSP_REQUEST_new();
1067 id = OCSP_cert_to_id(cert_id_md, cert, issuer);
1068 if (id == NULL || !sk_OCSP_CERTID_push(ids, id))
1070 if (!OCSP_request_add0_id(*req, id))
1075 BIO_printf(bio_err, "Error Creating OCSP request\n");
1079 static int add_ocsp_serial(OCSP_REQUEST **req, char *serial,
1080 const EVP_MD *cert_id_md, X509 *issuer,
1081 STACK_OF(OCSP_CERTID) *ids)
1085 ASN1_BIT_STRING *ikey;
1088 if (issuer == NULL) {
1089 BIO_printf(bio_err, "No issuer certificate specified\n");
1093 *req = OCSP_REQUEST_new();
1096 iname = X509_get_subject_name(issuer);
1097 ikey = X509_get0_pubkey_bitstr(issuer);
1098 sno = s2i_ASN1_INTEGER(NULL, serial);
1100 BIO_printf(bio_err, "Error converting serial number %s\n", serial);
1103 id = OCSP_cert_id_new(cert_id_md, iname, ikey, sno);
1104 ASN1_INTEGER_free(sno);
1105 if (id == NULL || !sk_OCSP_CERTID_push(ids, id))
1107 if (!OCSP_request_add0_id(*req, id))
1112 BIO_printf(bio_err, "Error Creating OCSP request\n");
1116 static void print_ocsp_summary(BIO *out, OCSP_BASICRESP *bs, OCSP_REQUEST *req,
1117 STACK_OF(OPENSSL_STRING) *names,
1118 STACK_OF(OCSP_CERTID) *ids, long nsec,
1123 int i, status, reason;
1124 ASN1_GENERALIZEDTIME *rev, *thisupd, *nextupd;
1126 if (bs == NULL || req == NULL || !sk_OPENSSL_STRING_num(names)
1127 || !sk_OCSP_CERTID_num(ids))
1130 for (i = 0; i < sk_OCSP_CERTID_num(ids); i++) {
1131 id = sk_OCSP_CERTID_value(ids, i);
1132 name = sk_OPENSSL_STRING_value(names, i);
1133 BIO_printf(out, "%s: ", name);
1135 if (!OCSP_resp_find_status(bs, id, &status, &reason,
1136 &rev, &thisupd, &nextupd)) {
1137 BIO_puts(out, "ERROR: No Status found.\n");
1142 * Check validity: if invalid write to output BIO so we know which
1143 * response this refers to.
1145 if (!OCSP_check_validity(thisupd, nextupd, nsec, maxage)) {
1146 BIO_puts(out, "WARNING: Status times invalid.\n");
1147 ERR_print_errors(out);
1149 BIO_printf(out, "%s\n", OCSP_cert_status_str(status));
1151 BIO_puts(out, "\tThis Update: ");
1152 ASN1_GENERALIZEDTIME_print(out, thisupd);
1153 BIO_puts(out, "\n");
1156 BIO_puts(out, "\tNext Update: ");
1157 ASN1_GENERALIZEDTIME_print(out, nextupd);
1158 BIO_puts(out, "\n");
1161 if (status != V_OCSP_CERTSTATUS_REVOKED)
1165 BIO_printf(out, "\tReason: %s\n", OCSP_crl_reason_str(reason));
1167 BIO_puts(out, "\tRevocation Time: ");
1168 ASN1_GENERALIZEDTIME_print(out, rev);
1169 BIO_puts(out, "\n");
1173 static void make_ocsp_response(BIO *err, OCSP_RESPONSE **resp, OCSP_REQUEST *req,
1174 CA_DB *db, STACK_OF(X509) *ca, X509 *rcert,
1175 EVP_PKEY *rkey, const EVP_MD *rmd,
1176 STACK_OF(OPENSSL_STRING) *sigopts,
1177 STACK_OF(X509) *rother, unsigned long flags,
1178 int nmin, int ndays, int badsig,
1179 const EVP_MD *resp_md)
1181 ASN1_TIME *thisupd = NULL, *nextupd = NULL;
1183 OCSP_BASICRESP *bs = NULL;
1185 EVP_MD_CTX *mctx = NULL;
1186 EVP_PKEY_CTX *pkctx = NULL;
1188 id_count = OCSP_request_onereq_count(req);
1190 if (id_count <= 0) {
1192 OCSP_response_create(OCSP_RESPONSE_STATUS_MALFORMEDREQUEST, NULL);
1196 bs = OCSP_BASICRESP_new();
1197 thisupd = X509_gmtime_adj(NULL, 0);
1199 nextupd = X509_time_adj_ex(NULL, ndays, nmin * 60, NULL);
1201 /* Examine each certificate id in the request */
1202 for (i = 0; i < id_count; i++) {
1204 ASN1_INTEGER *serial;
1208 ASN1_OBJECT *cert_id_md_oid;
1209 const EVP_MD *cert_id_md;
1210 OCSP_CERTID *cid_resp_md = NULL;
1212 one = OCSP_request_onereq_get0(req, i);
1213 cid = OCSP_onereq_get0_id(one);
1215 OCSP_id_get0_info(NULL, &cert_id_md_oid, NULL, NULL, cid);
1217 cert_id_md = EVP_get_digestbyobj(cert_id_md_oid);
1218 if (cert_id_md == NULL) {
1219 *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_INTERNALERROR,
1223 for (jj = 0; jj < sk_X509_num(ca) && !found; jj++) {
1224 X509 *ca_cert = sk_X509_value(ca, jj);
1225 OCSP_CERTID *ca_id = OCSP_cert_to_id(cert_id_md, NULL, ca_cert);
1227 if (OCSP_id_issuer_cmp(ca_id, cid) == 0) {
1229 if (resp_md != NULL)
1230 cid_resp_md = OCSP_cert_to_id(resp_md, NULL, ca_cert);
1232 OCSP_CERTID_free(ca_id);
1234 OCSP_id_get0_info(NULL, NULL, NULL, &serial, cid);
1235 inf = lookup_serial(db, serial);
1237 /* at this point, we can have cid be an alias of cid_resp_md */
1238 cid = (cid_resp_md != NULL) ? cid_resp_md : cid;
1241 OCSP_basic_add1_status(bs, cid,
1242 V_OCSP_CERTSTATUS_UNKNOWN,
1243 0, NULL, thisupd, nextupd);
1247 OCSP_basic_add1_status(bs, cid,
1248 V_OCSP_CERTSTATUS_UNKNOWN,
1249 0, NULL, thisupd, nextupd);
1250 } else if (inf[DB_type][0] == DB_TYPE_VAL) {
1251 OCSP_basic_add1_status(bs, cid,
1252 V_OCSP_CERTSTATUS_GOOD,
1253 0, NULL, thisupd, nextupd);
1254 } else if (inf[DB_type][0] == DB_TYPE_REV) {
1255 ASN1_OBJECT *inst = NULL;
1256 ASN1_TIME *revtm = NULL;
1257 ASN1_GENERALIZEDTIME *invtm = NULL;
1258 OCSP_SINGLERESP *single;
1261 unpack_revinfo(&revtm, &reason, &inst, &invtm, inf[DB_rev_date]);
1262 single = OCSP_basic_add1_status(bs, cid,
1263 V_OCSP_CERTSTATUS_REVOKED,
1264 reason, revtm, thisupd, nextupd);
1266 OCSP_SINGLERESP_add1_ext_i2d(single, NID_invalidity_date,
1268 else if (inst != NULL)
1269 OCSP_SINGLERESP_add1_ext_i2d(single,
1270 NID_hold_instruction_code, inst,
1272 ASN1_OBJECT_free(inst);
1273 ASN1_TIME_free(revtm);
1274 ASN1_GENERALIZEDTIME_free(invtm);
1276 OCSP_CERTID_free(cid_resp_md);
1279 OCSP_copy_nonce(bs, req);
1281 mctx = EVP_MD_CTX_new();
1282 if ( mctx == NULL || !EVP_DigestSignInit(mctx, &pkctx, rmd, NULL, rkey)) {
1283 *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_INTERNALERROR, NULL);
1286 for (i = 0; i < sk_OPENSSL_STRING_num(sigopts); i++) {
1287 char *sigopt = sk_OPENSSL_STRING_value(sigopts, i);
1289 if (pkey_ctrl_string(pkctx, sigopt) <= 0) {
1290 BIO_printf(err, "parameter error \"%s\"\n", sigopt);
1291 ERR_print_errors(bio_err);
1292 *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_INTERNALERROR,
1297 if (!OCSP_basic_sign_ctx(bs, rcert, mctx, rother, flags)) {
1298 *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_INTERNALERROR, bs);
1303 const ASN1_OCTET_STRING *sig = OCSP_resp_get0_signature(bs);
1304 corrupt_signature(sig);
1307 *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_SUCCESSFUL, bs);
1310 EVP_MD_CTX_free(mctx);
1311 ASN1_TIME_free(thisupd);
1312 ASN1_TIME_free(nextupd);
1313 OCSP_BASICRESP_free(bs);
1316 static char **lookup_serial(CA_DB *db, ASN1_INTEGER *ser)
1320 char *itmp, *row[DB_NUMBER], **rrow;
1321 for (i = 0; i < DB_NUMBER; i++)
1323 bn = ASN1_INTEGER_to_BN(ser, NULL);
1324 OPENSSL_assert(bn); /* FIXME: should report an error at this
1325 * point and abort */
1327 itmp = OPENSSL_strdup("00");
1329 itmp = BN_bn2hex(bn);
1330 row[DB_serial] = itmp;
1332 rrow = TXT_DB_get_by_index(db->db, DB_serial, row);
1337 /* Quick and dirty OCSP server: read in and parse input request */
1339 static BIO *init_responder(const char *port)
1341 # ifdef OPENSSL_NO_SOCK
1343 "Error setting up accept BIO - sockets not supported.\n");
1346 BIO *acbio = NULL, *bufbio = NULL;
1348 bufbio = BIO_new(BIO_f_buffer());
1351 acbio = BIO_new(BIO_s_accept());
1353 || BIO_set_bind_mode(acbio, BIO_BIND_REUSEADDR) < 0
1354 || BIO_set_accept_port(acbio, port) < 0) {
1355 log_message(LOG_ERR, "Error setting up accept BIO");
1359 BIO_set_accept_bios(acbio, bufbio);
1361 if (BIO_do_accept(acbio) <= 0) {
1362 log_message(LOG_ERR, "Error starting accept");
1369 BIO_free_all(acbio);
1375 # ifndef OPENSSL_NO_SOCK
1377 * Decode %xx URL-decoding in-place. Ignores mal-formed sequences.
1379 static int urldecode(char *p)
1381 unsigned char *out = (unsigned char *)p;
1382 unsigned char *save = out;
1387 else if (isxdigit(_UC(p[1])) && isxdigit(_UC(p[2]))) {
1388 /* Don't check, can't fail because of ixdigit() call. */
1389 *out++ = (OPENSSL_hexchar2int(p[1]) << 4)
1390 | OPENSSL_hexchar2int(p[2]);
1397 return (int)(out - save);
1402 static void socket_timeout(int signum)
1404 if (acfd != (int)INVALID_SOCKET)
1405 (void)shutdown(acfd, SHUT_RD);
1409 static int do_responder(OCSP_REQUEST **preq, BIO **pcbio, BIO *acbio,
1412 # ifdef OPENSSL_NO_SOCK
1416 OCSP_REQUEST *req = NULL;
1417 char inbuf[2048], reqbuf[2048];
1419 BIO *cbio = NULL, *getbio = NULL, *b64 = NULL;
1424 /* Connection loss before accept() is routine, ignore silently */
1425 if (BIO_do_accept(acbio) <= 0)
1428 cbio = BIO_pop(acbio);
1430 client = BIO_get_peer_name(cbio);
1434 (void) BIO_get_fd(cbio, &acfd);
1439 /* Read the request line. */
1440 len = BIO_gets(cbio, reqbuf, sizeof(reqbuf));
1444 if (strncmp(reqbuf, "GET ", 4) == 0) {
1445 /* Expecting GET {sp} /URL {sp} HTTP/1.x */
1446 for (p = reqbuf + 4; *p == ' '; ++p)
1449 log_message(LOG_INFO, "Invalid request -- bad URL: %s", client);
1454 /* Splice off the HTTP version identifier. */
1455 for (q = p; *q; q++)
1458 if (strncmp(q, " HTTP/1.", 8) != 0) {
1459 log_message(LOG_INFO,
1460 "Invalid request -- bad HTTP version: %s", client);
1466 * Skip "GET / HTTP..." requests often used by load-balancers. Note:
1467 * 'p' was incremented above to point to the first byte *after* the
1468 * leading slash, so with 'GET / ' it is now an empty string.
1475 log_message(LOG_INFO,
1476 "Invalid request -- bad URL encoding: %s", client);
1479 if ((getbio = BIO_new_mem_buf(p, len)) == NULL
1480 || (b64 = BIO_new(BIO_f_base64())) == NULL) {
1481 log_message(LOG_ERR, "Could not allocate base64 bio: %s", client);
1484 BIO_set_flags(b64, BIO_FLAGS_BASE64_NO_NL);
1485 getbio = BIO_push(b64, getbio);
1486 } else if (strncmp(reqbuf, "POST ", 5) != 0) {
1487 log_message(LOG_INFO, "Invalid request -- bad HTTP verb: %s", client);
1491 /* Read and skip past the headers. */
1493 len = BIO_gets(cbio, inbuf, sizeof(inbuf));
1496 if ((inbuf[0] == '\r') || (inbuf[0] == '\n'))
1501 /* Clear alarm before we close the client socket */
1506 /* Try to read OCSP request */
1507 if (getbio != NULL) {
1508 req = d2i_OCSP_REQUEST_bio(getbio, NULL);
1509 BIO_free_all(getbio);
1511 req = d2i_OCSP_REQUEST_bio(cbio, NULL);
1515 log_message(LOG_ERR, "Error parsing OCSP request");
1523 acfd = (int)INVALID_SOCKET;
1529 static int send_ocsp_response(BIO *cbio, OCSP_RESPONSE *resp)
1532 "HTTP/1.0 200 OK\r\nContent-type: application/ocsp-response\r\n"
1533 "Content-Length: %d\r\n\r\n";
1536 BIO_printf(cbio, http_resp, i2d_OCSP_RESPONSE(resp, NULL));
1537 i2d_OCSP_RESPONSE_bio(cbio, resp);
1538 (void)BIO_flush(cbio);
1542 # ifndef OPENSSL_NO_SOCK
1543 OCSP_RESPONSE *process_responder(OCSP_REQUEST *req,
1544 const char *host, const char *path,
1545 const char *port, int use_ssl,
1546 STACK_OF(CONF_VALUE) *headers,
1549 SSL_CTX *ctx = NULL;
1550 OCSP_RESPONSE *resp = NULL;
1553 ctx = SSL_CTX_new(TLS_client_method());
1555 BIO_printf(bio_err, "Error creating SSL context.\n");
1558 SSL_CTX_set_mode(ctx, SSL_MODE_AUTO_RETRY);
1561 resp = (OCSP_RESPONSE *)
1562 app_http_post_asn1(host, port, path, NULL, NULL /* no proxy used */,
1563 ctx, headers, "application/ocsp-request",
1564 (ASN1_VALUE *)req, ASN1_ITEM_rptr(OCSP_REQUEST),
1565 req_timeout, ASN1_ITEM_rptr(OCSP_RESPONSE));
1568 BIO_printf(bio_err, "Error querying OCSP responder\n");