2 * Copyright 2001-2018 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the OpenSSL license (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>
39 # if defined(OPENSSL_SYS_UNIX) && !defined(OPENSSL_NO_SOCK) \
40 && !defined(OPENSSL_NO_POSIX_IO)
42 # include <sys/types.h>
43 # include <sys/wait.h>
46 # define MAXERRLEN 1000 /* limit error text sent to syslog to 1000 bytes */
52 # define LOG_WARNING 1
56 # if defined(OPENSSL_SYS_VXWORKS)
58 int setpgid(pid_t pid, pid_t pgid)
70 /* Maximum leeway in validity period: default 5 minutes */
71 # define MAX_VALIDITY_PERIOD (5 * 60)
73 static int add_ocsp_cert(OCSP_REQUEST **req, X509 *cert,
74 const EVP_MD *cert_id_md, X509 *issuer,
75 STACK_OF(OCSP_CERTID) *ids);
76 static int add_ocsp_serial(OCSP_REQUEST **req, char *serial,
77 const EVP_MD *cert_id_md, X509 *issuer,
78 STACK_OF(OCSP_CERTID) *ids);
79 static void print_ocsp_summary(BIO *out, OCSP_BASICRESP *bs, OCSP_REQUEST *req,
80 STACK_OF(OPENSSL_STRING) *names,
81 STACK_OF(OCSP_CERTID) *ids, long nsec,
83 static void make_ocsp_response(BIO *err, OCSP_RESPONSE **resp, OCSP_REQUEST *req,
84 CA_DB *db, STACK_OF(X509) *ca, X509 *rcert,
85 EVP_PKEY *rkey, const EVP_MD *md,
86 STACK_OF(OPENSSL_STRING) *sigopts,
87 STACK_OF(X509) *rother, unsigned long flags,
88 int nmin, int ndays, int badsig);
90 static char **lookup_serial(CA_DB *db, ASN1_INTEGER *ser);
91 static BIO *init_responder(const char *port);
92 static int do_responder(OCSP_REQUEST **preq, BIO **pcbio, BIO *acbio, int timeout);
93 static int send_ocsp_response(BIO *cbio, OCSP_RESPONSE *resp);
94 static void log_message(int level, const char *fmt, ...);
99 static int acfd = (int) INVALID_SOCKET;
100 static int index_changed(CA_DB *);
101 static void spawn_loop(void);
102 static int print_syslog(const char *str, size_t len, void *levPtr);
103 static void sock_timeout(int signum);
106 # ifndef OPENSSL_NO_SOCK
107 static OCSP_RESPONSE *query_responder(BIO *cbio, const char *host,
109 const STACK_OF(CONF_VALUE) *headers,
110 OCSP_REQUEST *req, int req_timeout);
113 typedef enum OPTION_choice {
114 OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
115 OPT_OUTFILE, OPT_TIMEOUT, OPT_URL, OPT_HOST, OPT_PORT,
116 OPT_IGNORE_ERR, OPT_NOVERIFY, OPT_NONCE, OPT_NO_NONCE,
117 OPT_RESP_NO_CERTS, OPT_RESP_KEY_ID, OPT_NO_CERTS,
118 OPT_NO_SIGNATURE_VERIFY, OPT_NO_CERT_VERIFY, OPT_NO_CHAIN,
119 OPT_NO_CERT_CHECKS, OPT_NO_EXPLICIT, OPT_TRUST_OTHER,
120 OPT_NO_INTERN, OPT_BADSIG, OPT_TEXT, OPT_REQ_TEXT, OPT_RESP_TEXT,
121 OPT_REQIN, OPT_RESPIN, OPT_SIGNER, OPT_VAFILE, OPT_SIGN_OTHER,
122 OPT_VERIFY_OTHER, OPT_CAFILE, OPT_CAPATH, OPT_NOCAFILE, OPT_NOCAPATH,
123 OPT_VALIDITY_PERIOD, OPT_STATUS_AGE, OPT_SIGNKEY, OPT_REQOUT,
124 OPT_RESPOUT, OPT_PATH, OPT_ISSUER, OPT_CERT, OPT_SERIAL,
125 OPT_INDEX, OPT_CA, OPT_NMIN, OPT_REQUEST, OPT_NDAYS, OPT_RSIGNER,
126 OPT_RKEY, OPT_ROTHER, OPT_RMD, OPT_RSIGOPT, OPT_HEADER,
132 const OPTIONS ocsp_options[] = {
133 {"help", OPT_HELP, '-', "Display this summary"},
134 {"out", OPT_OUTFILE, '>', "Output filename"},
135 {"timeout", OPT_TIMEOUT, 'p',
136 "Connection timeout (in seconds) to the OCSP responder"},
137 {"url", OPT_URL, 's', "Responder URL"},
138 {"host", OPT_HOST, 's', "TCP/IP hostname:port to connect to"},
139 {"port", OPT_PORT, 'p', "Port to run responder on"},
140 {"ignore_err", OPT_IGNORE_ERR, '-',
141 "Ignore error on OCSP request or response and continue running"},
142 {"noverify", OPT_NOVERIFY, '-', "Don't verify response at all"},
143 {"nonce", OPT_NONCE, '-', "Add OCSP nonce to request"},
144 {"no_nonce", OPT_NO_NONCE, '-', "Don't add OCSP nonce to request"},
145 {"resp_no_certs", OPT_RESP_NO_CERTS, '-',
146 "Don't include any certificates in response"},
147 {"resp_key_id", OPT_RESP_KEY_ID, '-',
148 "Identify response by signing certificate key ID"},
150 {"multi", OPT_MULTI, 'p', "run multiple responder processes"},
152 {"no_certs", OPT_NO_CERTS, '-',
153 "Don't include any certificates in signed request"},
154 {"no_signature_verify", OPT_NO_SIGNATURE_VERIFY, '-',
155 "Don't check signature on response"},
156 {"no_cert_verify", OPT_NO_CERT_VERIFY, '-',
157 "Don't check signing certificate"},
158 {"no_chain", OPT_NO_CHAIN, '-', "Don't chain verify response"},
159 {"no_cert_checks", OPT_NO_CERT_CHECKS, '-',
160 "Don't do additional checks on signing certificate"},
161 {"no_explicit", OPT_NO_EXPLICIT, '-',
162 "Do not explicitly check the chain, just verify the root"},
163 {"trust_other", OPT_TRUST_OTHER, '-',
164 "Don't verify additional certificates"},
165 {"no_intern", OPT_NO_INTERN, '-',
166 "Don't search certificates contained in response for signer"},
167 {"badsig", OPT_BADSIG, '-',
168 "Corrupt last byte of loaded OSCP response signature (for test)"},
169 {"text", OPT_TEXT, '-', "Print text form of request and response"},
170 {"req_text", OPT_REQ_TEXT, '-', "Print text form of request"},
171 {"resp_text", OPT_RESP_TEXT, '-', "Print text form of response"},
172 {"reqin", OPT_REQIN, 's', "File with the DER-encoded request"},
173 {"respin", OPT_RESPIN, 's', "File with the DER-encoded response"},
174 {"signer", OPT_SIGNER, '<', "Certificate to sign OCSP request with"},
175 {"VAfile", OPT_VAFILE, '<', "Validator certificates file"},
176 {"sign_other", OPT_SIGN_OTHER, '<',
177 "Additional certificates to include in signed request"},
178 {"verify_other", OPT_VERIFY_OTHER, '<',
179 "Additional certificates to search for signer"},
180 {"CAfile", OPT_CAFILE, '<', "Trusted certificates file"},
181 {"CApath", OPT_CAPATH, '<', "Trusted certificates directory"},
182 {"no-CAfile", OPT_NOCAFILE, '-',
183 "Do not load the default certificates file"},
184 {"no-CApath", OPT_NOCAPATH, '-',
185 "Do not load certificates from the default certificates directory"},
186 {"validity_period", OPT_VALIDITY_PERIOD, 'u',
187 "Maximum validity discrepancy in seconds"},
188 {"status_age", OPT_STATUS_AGE, 'p', "Maximum status age in seconds"},
189 {"signkey", OPT_SIGNKEY, 's', "Private key to sign OCSP request with"},
190 {"reqout", OPT_REQOUT, 's', "Output file for the DER-encoded request"},
191 {"respout", OPT_RESPOUT, 's', "Output file for the DER-encoded response"},
192 {"path", OPT_PATH, 's', "Path to use in OCSP request"},
193 {"issuer", OPT_ISSUER, '<', "Issuer certificate"},
194 {"cert", OPT_CERT, '<', "Certificate to check"},
195 {"serial", OPT_SERIAL, 's', "Serial number to check"},
196 {"index", OPT_INDEX, '<', "Certificate status index file"},
197 {"CA", OPT_CA, '<', "CA certificate"},
198 {"nmin", OPT_NMIN, 'p', "Number of minutes before next update"},
199 {"nrequest", OPT_REQUEST, 'p',
200 "Number of requests to accept (default unlimited)"},
201 {"ndays", OPT_NDAYS, 'p', "Number of days before next update"},
202 {"rsigner", OPT_RSIGNER, '<',
203 "Responder certificate to sign responses with"},
204 {"rkey", OPT_RKEY, '<', "Responder key to sign responses with"},
205 {"rother", OPT_ROTHER, '<', "Other certificates to include in response"},
206 {"rmd", OPT_RMD, 's', "Digest Algorithm to use in signature of OCSP response"},
207 {"rsigopt", OPT_RSIGOPT, 's', "OCSP response signature parameter in n:v form"},
208 {"header", OPT_HEADER, 's', "key=value header to add"},
209 {"", OPT_MD, '-', "Any supported digest algorithm (sha1,sha256, ... )"},
214 int ocsp_main(int argc, char **argv)
216 BIO *acbio = NULL, *cbio = NULL, *derbio = NULL, *out = NULL;
217 const EVP_MD *cert_id_md = NULL, *rsign_md = NULL;
218 STACK_OF(OPENSSL_STRING) *rsign_sigopts = NULL;
221 EVP_PKEY *key = NULL, *rkey = NULL;
222 OCSP_BASICRESP *bs = NULL;
223 OCSP_REQUEST *req = NULL;
224 OCSP_RESPONSE *resp = NULL;
225 STACK_OF(CONF_VALUE) *headers = NULL;
226 STACK_OF(OCSP_CERTID) *ids = NULL;
227 STACK_OF(OPENSSL_STRING) *reqnames = NULL;
228 STACK_OF(X509) *sign_other = NULL, *verify_other = NULL, *rother = NULL;
229 STACK_OF(X509) *issuers = NULL;
230 X509 *issuer = NULL, *cert = NULL;
231 STACK_OF(X509) *rca_cert = NULL;
232 X509 *signer = NULL, *rsigner = NULL;
233 X509_STORE *store = NULL;
234 X509_VERIFY_PARAM *vpm = NULL;
235 const char *CAfile = NULL, *CApath = NULL;
236 char *header, *value;
237 char *host = NULL, *port = NULL, *path = "/", *outfile = NULL;
238 char *rca_filename = NULL, *reqin = NULL, *respin = NULL;
239 char *reqout = NULL, *respout = NULL, *ridx_filename = NULL;
240 char *rsignfile = NULL, *rkeyfile = NULL;
241 char *sign_certfile = NULL, *verify_certfile = NULL, *rcertfile = NULL;
242 char *signfile = NULL, *keyfile = NULL;
243 char *thost = NULL, *tport = NULL, *tpath = NULL;
244 int noCAfile = 0, noCApath = 0;
245 int accept_count = -1, add_nonce = 1, noverify = 0, use_ssl = -1;
246 int vpmtouched = 0, badsig = 0, i, ignore_err = 0, nmin = 0, ndays = -1;
247 int req_text = 0, resp_text = 0, ret = 1;
248 int req_timeout = -1;
249 long nsec = MAX_VALIDITY_PERIOD, maxage = -1;
250 unsigned long sign_flags = 0, verify_flags = 0, rflags = 0;
253 reqnames = sk_OPENSSL_STRING_new_null();
254 if (reqnames == NULL)
256 ids = sk_OCSP_CERTID_new_null();
259 if ((vpm = X509_VERIFY_PARAM_new()) == NULL)
262 prog = opt_init(argc, argv, ocsp_options);
263 while ((o = opt_next()) != OPT_EOF) {
268 BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
272 opt_help(ocsp_options);
278 #ifndef OPENSSL_NO_SOCK
279 req_timeout = atoi(opt_arg());
286 thost = tport = tpath = NULL;
287 if (!OCSP_parse_url(opt_arg(), &host, &port, &path, &use_ssl)) {
288 BIO_printf(bio_err, "%s Error parsing URL\n", prog);
313 case OPT_RESP_NO_CERTS:
314 rflags |= OCSP_NOCERTS;
316 case OPT_RESP_KEY_ID:
317 rflags |= OCSP_RESPID_KEY;
320 sign_flags |= OCSP_NOCERTS;
322 case OPT_NO_SIGNATURE_VERIFY:
323 verify_flags |= OCSP_NOSIGS;
325 case OPT_NO_CERT_VERIFY:
326 verify_flags |= OCSP_NOVERIFY;
329 verify_flags |= OCSP_NOCHAIN;
331 case OPT_NO_CERT_CHECKS:
332 verify_flags |= OCSP_NOCHECKS;
334 case OPT_NO_EXPLICIT:
335 verify_flags |= OCSP_NOEXPLICIT;
337 case OPT_TRUST_OTHER:
338 verify_flags |= OCSP_TRUSTOTHER;
341 verify_flags |= OCSP_NOINTERN;
347 req_text = resp_text = 1;
362 signfile = opt_arg();
365 verify_certfile = opt_arg();
366 verify_flags |= OCSP_TRUSTOTHER;
369 sign_certfile = opt_arg();
371 case OPT_VERIFY_OTHER:
372 verify_certfile = opt_arg();
387 if (!opt_verify(o, vpm))
391 case OPT_VALIDITY_PERIOD:
392 opt_long(opt_arg(), &nsec);
395 opt_long(opt_arg(), &maxage);
410 issuer = load_cert(opt_arg(), FORMAT_PEM, "issuer certificate");
413 if (issuers == NULL) {
414 if ((issuers = sk_X509_new_null()) == NULL)
417 sk_X509_push(issuers, issuer);
421 cert = load_cert(opt_arg(), FORMAT_PEM, "certificate");
424 if (cert_id_md == NULL)
425 cert_id_md = EVP_sha1();
426 if (!add_ocsp_cert(&req, cert, cert_id_md, issuer, ids))
428 if (!sk_OPENSSL_STRING_push(reqnames, opt_arg()))
433 if (cert_id_md == NULL)
434 cert_id_md = EVP_sha1();
435 if (!add_ocsp_serial(&req, opt_arg(), cert_id_md, issuer, ids))
437 if (!sk_OPENSSL_STRING_push(reqnames, opt_arg()))
442 ridx_filename = opt_arg();
445 rca_filename = opt_arg();
448 opt_int(opt_arg(), &nmin);
453 opt_int(opt_arg(), &accept_count);
456 ndays = atoi(opt_arg());
459 rsignfile = opt_arg();
462 rkeyfile = opt_arg();
465 rcertfile = opt_arg();
467 case OPT_RMD: /* Response MessageDigest */
468 if (!opt_md(opt_arg(), &rsign_md))
472 if (rsign_sigopts == NULL)
473 rsign_sigopts = sk_OPENSSL_STRING_new_null();
474 if (rsign_sigopts == NULL || !sk_OPENSSL_STRING_push(rsign_sigopts, opt_arg()))
479 value = strchr(header, '=');
481 BIO_printf(bio_err, "Missing = in header key=value\n");
485 if (!X509V3_add_value(header, value, &headers))
491 "%s: Digest must be before -cert or -serial\n",
495 if (!opt_md(opt_unknown(), &cert_id_md))
501 multi = atoi(opt_arg());
507 BIO_printf(bio_err, "%s: Digest must be before -cert or -serial\n",
511 argc = opt_num_rest();
515 /* Have we anything to do? */
516 if (req == NULL && reqin == NULL
517 && respin == NULL && !(port != NULL && ridx_filename != NULL))
520 out = bio_open_default(outfile, 'w', FORMAT_TEXT);
524 if (req == NULL && (add_nonce != 2))
527 if (req == NULL && reqin != NULL) {
528 derbio = bio_open_default(reqin, 'r', FORMAT_ASN1);
531 req = d2i_OCSP_REQUEST_bio(derbio, NULL);
534 BIO_printf(bio_err, "Error reading OCSP request\n");
539 if (req == NULL && port != NULL) {
540 acbio = init_responder(port);
545 if (rsignfile != NULL) {
546 if (rkeyfile == NULL)
547 rkeyfile = rsignfile;
548 rsigner = load_cert(rsignfile, FORMAT_PEM, "responder certificate");
549 if (rsigner == NULL) {
550 BIO_printf(bio_err, "Error loading responder certificate\n");
553 if (!load_certs(rca_filename, &rca_cert, FORMAT_PEM,
554 NULL, "CA certificate"))
556 if (rcertfile != NULL) {
557 if (!load_certs(rcertfile, &rother, FORMAT_PEM, NULL,
558 "responder other certificates"))
561 rkey = load_key(rkeyfile, FORMAT_PEM, 0, NULL, NULL,
562 "responder private key");
567 if (ridx_filename != NULL
568 && (rkey == NULL || rsigner == NULL || rca_cert == NULL)) {
570 "Responder mode requires certificate, key, and CA.\n");
574 if (ridx_filename != NULL) {
575 rdb = load_index(ridx_filename, NULL);
576 if (rdb == NULL || index_index(rdb) <= 0) {
583 if (multi && acbio != NULL)
585 if (acbio != NULL && req_timeout > 0)
586 signal(SIGALRM, sock_timeout);
590 log_message(LOG_INFO, "waiting for OCSP client connections...");
596 if (index_changed(rdb)) {
597 CA_DB *newrdb = load_index(ridx_filename, NULL);
599 if (newrdb != NULL && index_index(newrdb) > 0) {
604 log_message(LOG_ERR, "error reloading updated index: %s",
611 if (!do_responder(&req, &cbio, acbio, req_timeout))
616 OCSP_response_create(OCSP_RESPONSE_STATUS_MALFORMEDREQUEST,
618 send_ocsp_response(cbio, resp);
624 && (signfile != NULL || reqout != NULL
625 || host != NULL || add_nonce || ridx_filename != NULL)) {
626 BIO_printf(bio_err, "Need an OCSP request for this operation!\n");
630 if (req != NULL && add_nonce)
631 OCSP_request_add1_nonce(req, NULL, -1);
633 if (signfile != NULL) {
636 signer = load_cert(signfile, FORMAT_PEM, "signer certificate");
637 if (signer == NULL) {
638 BIO_printf(bio_err, "Error loading signer certificate\n");
641 if (sign_certfile != NULL) {
642 if (!load_certs(sign_certfile, &sign_other, FORMAT_PEM, NULL,
643 "signer certificates"))
646 key = load_key(keyfile, FORMAT_PEM, 0, NULL, NULL,
647 "signer private key");
651 if (!OCSP_request_sign
652 (req, signer, key, NULL, sign_other, sign_flags)) {
653 BIO_printf(bio_err, "Error signing OCSP request\n");
658 if (req_text && req != NULL)
659 OCSP_REQUEST_print(out, req, 0);
661 if (reqout != NULL) {
662 derbio = bio_open_default(reqout, 'w', FORMAT_ASN1);
665 i2d_OCSP_REQUEST_bio(derbio, req);
670 make_ocsp_response(bio_err, &resp, req, rdb, rca_cert, rsigner, rkey,
671 rsign_md, rsign_sigopts, rother, rflags, nmin, ndays, badsig);
673 send_ocsp_response(cbio, resp);
674 } else if (host != NULL) {
675 # ifndef OPENSSL_NO_SOCK
676 resp = process_responder(req, host, path,
677 port, use_ssl, headers, req_timeout);
682 "Error creating connect BIO - sockets not supported.\n");
685 } else if (respin != NULL) {
686 derbio = bio_open_default(respin, 'r', FORMAT_ASN1);
689 resp = d2i_OCSP_RESPONSE_bio(derbio, NULL);
692 BIO_printf(bio_err, "Error reading OCSP response\n");
702 if (respout != NULL) {
703 derbio = bio_open_default(respout, 'w', FORMAT_ASN1);
706 i2d_OCSP_RESPONSE_bio(derbio, resp);
710 i = OCSP_response_status(resp);
711 if (i != OCSP_RESPONSE_STATUS_SUCCESSFUL) {
712 BIO_printf(out, "Responder Error: %s (%d)\n",
713 OCSP_response_status_str(i), i);
719 OCSP_RESPONSE_print(out, resp, 0);
721 /* If running as responder don't verify our own response */
723 /* If not unlimited, see if we took all we should. */
724 if (accept_count != -1 && --accept_count <= 0) {
730 OCSP_REQUEST_free(req);
732 OCSP_RESPONSE_free(resp);
736 if (ridx_filename != NULL) {
742 store = setup_verify(CAfile, CApath, noCAfile, noCApath);
747 X509_STORE_set1_param(store, vpm);
748 if (verify_certfile != NULL) {
749 if (!load_certs(verify_certfile, &verify_other, FORMAT_PEM, NULL,
750 "validator certificate"))
754 bs = OCSP_response_get1_basic(resp);
756 BIO_printf(bio_err, "Error parsing response\n");
763 if (req != NULL && ((i = OCSP_check_nonce(req, bs)) <= 0)) {
765 BIO_printf(bio_err, "WARNING: no nonce in response\n");
767 BIO_printf(bio_err, "Nonce Verify error\n");
773 i = OCSP_basic_verify(bs, verify_other, store, verify_flags);
774 if (i <= 0 && issuers) {
775 i = OCSP_basic_verify(bs, issuers, store, OCSP_TRUSTOTHER);
780 BIO_printf(bio_err, "Response Verify Failure\n");
781 ERR_print_errors(bio_err);
784 BIO_printf(bio_err, "Response verify OK\n");
788 print_ocsp_summary(out, bs, req, reqnames, ids, nsec, maxage);
791 ERR_print_errors(bio_err);
793 X509_STORE_free(store);
794 X509_VERIFY_PARAM_free(vpm);
795 sk_OPENSSL_STRING_free(rsign_sigopts);
799 sk_X509_pop_free(issuers, X509_free);
801 sk_X509_pop_free(rca_cert, X509_free);
806 OCSP_REQUEST_free(req);
807 OCSP_RESPONSE_free(resp);
808 OCSP_BASICRESP_free(bs);
809 sk_OPENSSL_STRING_free(reqnames);
810 sk_OCSP_CERTID_free(ids);
811 sk_X509_pop_free(sign_other, X509_free);
812 sk_X509_pop_free(verify_other, X509_free);
813 sk_CONF_VALUE_pop_free(headers, X509V3_conf_free);
822 log_message(int level, const char *fmt, ...)
830 if (vsnprintf(buf, sizeof(buf), fmt, ap) > 0) {
831 syslog(level, "%s", buf);
833 if (level >= LOG_ERR)
834 ERR_print_errors_cb(print_syslog, &level);
838 BIO_printf(bio_err, "%s: ", prog);
839 BIO_vprintf(bio_err, fmt, ap);
840 BIO_printf(bio_err, "\n");
847 static int print_syslog(const char *str, size_t len, void *levPtr)
849 int level = *(int *)levPtr;
850 int ilen = (len > MAXERRLEN) ? MAXERRLEN : len;
852 syslog(level, "%.*s", ilen, str);
857 static int index_changed(CA_DB *rdb)
861 if (rdb != NULL && stat(rdb->dbfname, &sb) != -1) {
862 if (rdb->dbst.st_mtime != sb.st_mtime
863 || rdb->dbst.st_ctime != sb.st_ctime
864 || rdb->dbst.st_ino != sb.st_ino
865 || rdb->dbst.st_dev != sb.st_dev) {
866 syslog(LOG_INFO, "index file changed, reloading");
873 static void killall(int ret, pid_t *kidpids)
877 for (i = 0; i < multi; ++i)
879 (void)kill(kidpids[i], SIGTERM);
880 OPENSSL_free(kidpids);
885 static int termsig = 0;
887 static void noteterm (int sig)
893 * Loop spawning up to `multi` child processes, only child processes return
894 * from this function. The parent process loops until receiving a termination
895 * signal, kills extant children and exits without returning.
897 static void spawn_loop(void)
899 pid_t *kidpids = NULL;
904 openlog(prog, LOG_PID, LOG_DAEMON);
907 syslog(LOG_ERR, "fatal: error detaching from parent process group: %s",
911 kidpids = app_malloc(multi * sizeof(*kidpids), "child PID array");
912 for (i = 0; i < multi; ++i)
915 signal(SIGINT, noteterm);
916 signal(SIGTERM, noteterm);
918 while (termsig == 0) {
922 * Wait for a child to replace when we're at the limit.
923 * Slow down if a child exited abnormally or waitpid() < 0
925 while (termsig == 0 && procs >= multi) {
926 if ((fpid = waitpid(-1, &status, 0)) > 0) {
927 for (i = 0; i < procs; ++i) {
928 if (kidpids[i] == fpid) {
935 syslog(LOG_ERR, "fatal: internal error: "
936 "no matching child slot for pid: %ld",
941 if (WIFEXITED(status))
942 syslog(LOG_WARNING, "child process: %ld, exit status: %d",
943 (long)fpid, WEXITSTATUS(status));
944 else if (WIFSIGNALED(status))
945 syslog(LOG_WARNING, "child process: %ld, term signal %d%s",
946 (long)fpid, WTERMSIG(status),
948 WCOREDUMP(status) ? " (core dumped)" :
954 } else if (errno != EINTR) {
955 syslog(LOG_ERR, "fatal: waitpid(): %s", strerror(errno));
962 switch(fpid = fork()) {
964 /* System critically low on memory, pause and try again later */
968 OPENSSL_free(kidpids);
969 signal(SIGINT, SIG_DFL);
970 signal(SIGTERM, SIG_DFL);
973 if (RAND_poll() <= 0) {
974 syslog(LOG_ERR, "fatal: RAND_poll() failed");
978 default: /* parent */
979 for (i = 0; i < multi; ++i) {
980 if (kidpids[i] == 0) {
987 syslog(LOG_ERR, "fatal: internal error: no free child slots");
994 /* The loop above can only break on termsig */
995 syslog(LOG_INFO, "terminating on signal: %d", termsig);
1000 static int add_ocsp_cert(OCSP_REQUEST **req, X509 *cert,
1001 const EVP_MD *cert_id_md, X509 *issuer,
1002 STACK_OF(OCSP_CERTID) *ids)
1006 if (issuer == NULL) {
1007 BIO_printf(bio_err, "No issuer certificate specified\n");
1011 *req = OCSP_REQUEST_new();
1014 id = OCSP_cert_to_id(cert_id_md, cert, issuer);
1015 if (id == NULL || !sk_OCSP_CERTID_push(ids, id))
1017 if (!OCSP_request_add0_id(*req, id))
1022 BIO_printf(bio_err, "Error Creating OCSP request\n");
1026 static int add_ocsp_serial(OCSP_REQUEST **req, char *serial,
1027 const EVP_MD *cert_id_md, X509 *issuer,
1028 STACK_OF(OCSP_CERTID) *ids)
1032 ASN1_BIT_STRING *ikey;
1035 if (issuer == NULL) {
1036 BIO_printf(bio_err, "No issuer certificate specified\n");
1040 *req = OCSP_REQUEST_new();
1043 iname = X509_get_subject_name(issuer);
1044 ikey = X509_get0_pubkey_bitstr(issuer);
1045 sno = s2i_ASN1_INTEGER(NULL, serial);
1047 BIO_printf(bio_err, "Error converting serial number %s\n", serial);
1050 id = OCSP_cert_id_new(cert_id_md, iname, ikey, sno);
1051 ASN1_INTEGER_free(sno);
1052 if (id == NULL || !sk_OCSP_CERTID_push(ids, id))
1054 if (!OCSP_request_add0_id(*req, id))
1059 BIO_printf(bio_err, "Error Creating OCSP request\n");
1063 static void print_ocsp_summary(BIO *out, OCSP_BASICRESP *bs, OCSP_REQUEST *req,
1064 STACK_OF(OPENSSL_STRING) *names,
1065 STACK_OF(OCSP_CERTID) *ids, long nsec,
1070 int i, status, reason;
1071 ASN1_GENERALIZEDTIME *rev, *thisupd, *nextupd;
1073 if (bs == NULL || req == NULL || !sk_OPENSSL_STRING_num(names)
1074 || !sk_OCSP_CERTID_num(ids))
1077 for (i = 0; i < sk_OCSP_CERTID_num(ids); i++) {
1078 id = sk_OCSP_CERTID_value(ids, i);
1079 name = sk_OPENSSL_STRING_value(names, i);
1080 BIO_printf(out, "%s: ", name);
1082 if (!OCSP_resp_find_status(bs, id, &status, &reason,
1083 &rev, &thisupd, &nextupd)) {
1084 BIO_puts(out, "ERROR: No Status found.\n");
1089 * Check validity: if invalid write to output BIO so we know which
1090 * response this refers to.
1092 if (!OCSP_check_validity(thisupd, nextupd, nsec, maxage)) {
1093 BIO_puts(out, "WARNING: Status times invalid.\n");
1094 ERR_print_errors(out);
1096 BIO_printf(out, "%s\n", OCSP_cert_status_str(status));
1098 BIO_puts(out, "\tThis Update: ");
1099 ASN1_GENERALIZEDTIME_print(out, thisupd);
1100 BIO_puts(out, "\n");
1103 BIO_puts(out, "\tNext Update: ");
1104 ASN1_GENERALIZEDTIME_print(out, nextupd);
1105 BIO_puts(out, "\n");
1108 if (status != V_OCSP_CERTSTATUS_REVOKED)
1112 BIO_printf(out, "\tReason: %s\n", OCSP_crl_reason_str(reason));
1114 BIO_puts(out, "\tRevocation Time: ");
1115 ASN1_GENERALIZEDTIME_print(out, rev);
1116 BIO_puts(out, "\n");
1120 static void make_ocsp_response(BIO *err, OCSP_RESPONSE **resp, OCSP_REQUEST *req,
1121 CA_DB *db, STACK_OF(X509) *ca, X509 *rcert,
1122 EVP_PKEY *rkey, const EVP_MD *rmd,
1123 STACK_OF(OPENSSL_STRING) *sigopts,
1124 STACK_OF(X509) *rother, unsigned long flags,
1125 int nmin, int ndays, int badsig)
1127 ASN1_TIME *thisupd = NULL, *nextupd = NULL;
1129 OCSP_BASICRESP *bs = NULL;
1131 EVP_MD_CTX *mctx = NULL;
1132 EVP_PKEY_CTX *pkctx = NULL;
1134 id_count = OCSP_request_onereq_count(req);
1136 if (id_count <= 0) {
1138 OCSP_response_create(OCSP_RESPONSE_STATUS_MALFORMEDREQUEST, NULL);
1142 bs = OCSP_BASICRESP_new();
1143 thisupd = X509_gmtime_adj(NULL, 0);
1145 nextupd = X509_time_adj_ex(NULL, ndays, nmin * 60, NULL);
1147 /* Examine each certificate id in the request */
1148 for (i = 0; i < id_count; i++) {
1150 ASN1_INTEGER *serial;
1154 ASN1_OBJECT *cert_id_md_oid;
1155 const EVP_MD *cert_id_md;
1156 one = OCSP_request_onereq_get0(req, i);
1157 cid = OCSP_onereq_get0_id(one);
1159 OCSP_id_get0_info(NULL, &cert_id_md_oid, NULL, NULL, cid);
1161 cert_id_md = EVP_get_digestbyobj(cert_id_md_oid);
1162 if (cert_id_md == NULL) {
1163 *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_INTERNALERROR,
1167 for (jj = 0; jj < sk_X509_num(ca) && !found; jj++) {
1168 X509 *ca_cert = sk_X509_value(ca, jj);
1169 OCSP_CERTID *ca_id = OCSP_cert_to_id(cert_id_md, NULL, ca_cert);
1171 if (OCSP_id_issuer_cmp(ca_id, cid) == 0)
1174 OCSP_CERTID_free(ca_id);
1178 OCSP_basic_add1_status(bs, cid,
1179 V_OCSP_CERTSTATUS_UNKNOWN,
1180 0, NULL, thisupd, nextupd);
1183 OCSP_id_get0_info(NULL, NULL, NULL, &serial, cid);
1184 inf = lookup_serial(db, serial);
1186 OCSP_basic_add1_status(bs, cid,
1187 V_OCSP_CERTSTATUS_UNKNOWN,
1188 0, NULL, thisupd, nextupd);
1189 } else if (inf[DB_type][0] == DB_TYPE_VAL) {
1190 OCSP_basic_add1_status(bs, cid,
1191 V_OCSP_CERTSTATUS_GOOD,
1192 0, NULL, thisupd, nextupd);
1193 } else if (inf[DB_type][0] == DB_TYPE_REV) {
1194 ASN1_OBJECT *inst = NULL;
1195 ASN1_TIME *revtm = NULL;
1196 ASN1_GENERALIZEDTIME *invtm = NULL;
1197 OCSP_SINGLERESP *single;
1199 unpack_revinfo(&revtm, &reason, &inst, &invtm, inf[DB_rev_date]);
1200 single = OCSP_basic_add1_status(bs, cid,
1201 V_OCSP_CERTSTATUS_REVOKED,
1202 reason, revtm, thisupd, nextupd);
1204 OCSP_SINGLERESP_add1_ext_i2d(single, NID_invalidity_date,
1206 else if (inst != NULL)
1207 OCSP_SINGLERESP_add1_ext_i2d(single,
1208 NID_hold_instruction_code, inst,
1210 ASN1_OBJECT_free(inst);
1211 ASN1_TIME_free(revtm);
1212 ASN1_GENERALIZEDTIME_free(invtm);
1216 OCSP_copy_nonce(bs, req);
1218 mctx = EVP_MD_CTX_new();
1219 if ( mctx == NULL || !EVP_DigestSignInit(mctx, &pkctx, rmd, NULL, rkey)) {
1220 *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_INTERNALERROR, NULL);
1223 for (i = 0; i < sk_OPENSSL_STRING_num(sigopts); i++) {
1224 char *sigopt = sk_OPENSSL_STRING_value(sigopts, i);
1226 if (pkey_ctrl_string(pkctx, sigopt) <= 0) {
1227 BIO_printf(err, "parameter error \"%s\"\n", sigopt);
1228 ERR_print_errors(bio_err);
1229 *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_INTERNALERROR,
1234 OCSP_basic_sign_ctx(bs, rcert, mctx, rother, flags);
1237 const ASN1_OCTET_STRING *sig = OCSP_resp_get0_signature(bs);
1238 corrupt_signature(sig);
1241 *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_SUCCESSFUL, bs);
1244 EVP_MD_CTX_free(mctx);
1245 ASN1_TIME_free(thisupd);
1246 ASN1_TIME_free(nextupd);
1247 OCSP_BASICRESP_free(bs);
1250 static char **lookup_serial(CA_DB *db, ASN1_INTEGER *ser)
1254 char *itmp, *row[DB_NUMBER], **rrow;
1255 for (i = 0; i < DB_NUMBER; i++)
1257 bn = ASN1_INTEGER_to_BN(ser, NULL);
1258 OPENSSL_assert(bn); /* FIXME: should report an error at this
1259 * point and abort */
1261 itmp = OPENSSL_strdup("00");
1263 itmp = BN_bn2hex(bn);
1264 row[DB_serial] = itmp;
1266 rrow = TXT_DB_get_by_index(db->db, DB_serial, row);
1271 /* Quick and dirty OCSP server: read in and parse input request */
1273 static BIO *init_responder(const char *port)
1275 # ifdef OPENSSL_NO_SOCK
1277 "Error setting up accept BIO - sockets not supported.\n");
1280 BIO *acbio = NULL, *bufbio = NULL;
1282 bufbio = BIO_new(BIO_f_buffer());
1285 acbio = BIO_new(BIO_s_accept());
1287 || BIO_set_bind_mode(acbio, BIO_BIND_REUSEADDR) < 0
1288 || BIO_set_accept_port(acbio, port) < 0) {
1289 log_message(LOG_ERR, "Error setting up accept BIO");
1293 BIO_set_accept_bios(acbio, bufbio);
1295 if (BIO_do_accept(acbio) <= 0) {
1296 log_message(LOG_ERR, "Error starting accept");
1303 BIO_free_all(acbio);
1309 # ifndef OPENSSL_NO_SOCK
1311 * Decode %xx URL-decoding in-place. Ignores mal-formed sequences.
1313 static int urldecode(char *p)
1315 unsigned char *out = (unsigned char *)p;
1316 unsigned char *save = out;
1321 else if (isxdigit(_UC(p[1])) && isxdigit(_UC(p[2]))) {
1322 /* Don't check, can't fail because of ixdigit() call. */
1323 *out++ = (OPENSSL_hexchar2int(p[1]) << 4)
1324 | OPENSSL_hexchar2int(p[2]);
1331 return (int)(out - save);
1336 static void sock_timeout(int signum)
1338 if (acfd != (int)INVALID_SOCKET)
1339 (void)shutdown(acfd, SHUT_RD);
1343 static int do_responder(OCSP_REQUEST **preq, BIO **pcbio, BIO *acbio,
1346 # ifdef OPENSSL_NO_SOCK
1350 OCSP_REQUEST *req = NULL;
1351 char inbuf[2048], reqbuf[2048];
1353 BIO *cbio = NULL, *getbio = NULL, *b64 = NULL;
1358 /* Connection loss before accept() is routine, ignore silently */
1359 if (BIO_do_accept(acbio) <= 0)
1362 cbio = BIO_pop(acbio);
1364 client = BIO_get_peer_name(cbio);
1368 (void) BIO_get_fd(cbio, &acfd);
1373 /* Read the request line. */
1374 len = BIO_gets(cbio, reqbuf, sizeof(reqbuf));
1378 if (strncmp(reqbuf, "GET ", 4) == 0) {
1379 /* Expecting GET {sp} /URL {sp} HTTP/1.x */
1380 for (p = reqbuf + 4; *p == ' '; ++p)
1383 log_message(LOG_INFO, "Invalid request -- bad URL: %s", client);
1388 /* Splice off the HTTP version identifier. */
1389 for (q = p; *q; q++)
1392 if (strncmp(q, " HTTP/1.", 8) != 0) {
1393 log_message(LOG_INFO,
1394 "Invalid request -- bad HTTP version: %s", client);
1400 * Skip "GET / HTTP..." requests often used by load-balancers
1407 log_message(LOG_INFO,
1408 "Invalid request -- bad URL encoding: %s", client);
1411 if ((getbio = BIO_new_mem_buf(p, len)) == NULL
1412 || (b64 = BIO_new(BIO_f_base64())) == NULL) {
1413 log_message(LOG_ERR, "Could not allocate base64 bio: %s", client);
1416 BIO_set_flags(b64, BIO_FLAGS_BASE64_NO_NL);
1417 getbio = BIO_push(b64, getbio);
1418 } else if (strncmp(reqbuf, "POST ", 5) != 0) {
1419 log_message(LOG_INFO, "Invalid request -- bad HTTP verb: %s", client);
1423 /* Read and skip past the headers. */
1425 len = BIO_gets(cbio, inbuf, sizeof(inbuf));
1428 if ((inbuf[0] == '\r') || (inbuf[0] == '\n'))
1433 /* Clear alarm before we close the client socket */
1438 /* Try to read OCSP request */
1439 if (getbio != NULL) {
1440 req = d2i_OCSP_REQUEST_bio(getbio, NULL);
1441 BIO_free_all(getbio);
1443 req = d2i_OCSP_REQUEST_bio(cbio, NULL);
1447 log_message(LOG_ERR, "Error parsing OCSP request");
1455 acfd = (int)INVALID_SOCKET;
1461 static int send_ocsp_response(BIO *cbio, OCSP_RESPONSE *resp)
1464 "HTTP/1.0 200 OK\r\nContent-type: application/ocsp-response\r\n"
1465 "Content-Length: %d\r\n\r\n";
1468 BIO_printf(cbio, http_resp, i2d_OCSP_RESPONSE(resp, NULL));
1469 i2d_OCSP_RESPONSE_bio(cbio, resp);
1470 (void)BIO_flush(cbio);
1474 # ifndef OPENSSL_NO_SOCK
1475 static OCSP_RESPONSE *query_responder(BIO *cbio, const char *host,
1477 const STACK_OF(CONF_VALUE) *headers,
1478 OCSP_REQUEST *req, int req_timeout)
1484 OCSP_REQ_CTX *ctx = NULL;
1485 OCSP_RESPONSE *rsp = NULL;
1489 if (req_timeout != -1)
1490 BIO_set_nbio(cbio, 1);
1492 rv = BIO_do_connect(cbio);
1494 if ((rv <= 0) && ((req_timeout == -1) || !BIO_should_retry(cbio))) {
1495 BIO_puts(bio_err, "Error connecting BIO\n");
1499 if (BIO_get_fd(cbio, &fd) < 0) {
1500 BIO_puts(bio_err, "Can't get connection fd\n");
1504 if (req_timeout != -1 && rv <= 0) {
1506 openssl_fdset(fd, &confds);
1508 tv.tv_sec = req_timeout;
1509 rv = select(fd + 1, NULL, (void *)&confds, NULL, &tv);
1511 BIO_puts(bio_err, "Timeout on connect\n");
1516 ctx = OCSP_sendreq_new(cbio, path, NULL, -1);
1520 for (i = 0; i < sk_CONF_VALUE_num(headers); i++) {
1521 CONF_VALUE *hdr = sk_CONF_VALUE_value(headers, i);
1522 if (add_host == 1 && strcasecmp("host", hdr->name) == 0)
1524 if (!OCSP_REQ_CTX_add1_header(ctx, hdr->name, hdr->value))
1528 if (add_host == 1 && OCSP_REQ_CTX_add1_header(ctx, "Host", host) == 0)
1531 if (!OCSP_REQ_CTX_set1_req(ctx, req))
1535 rv = OCSP_sendreq_nbio(&rsp, ctx);
1538 if (req_timeout == -1)
1541 openssl_fdset(fd, &confds);
1543 tv.tv_sec = req_timeout;
1544 if (BIO_should_read(cbio)) {
1545 rv = select(fd + 1, (void *)&confds, NULL, NULL, &tv);
1546 } else if (BIO_should_write(cbio)) {
1547 rv = select(fd + 1, NULL, (void *)&confds, NULL, &tv);
1549 BIO_puts(bio_err, "Unexpected retry condition\n");
1553 BIO_puts(bio_err, "Timeout on request\n");
1557 BIO_puts(bio_err, "Select error\n");
1563 OCSP_REQ_CTX_free(ctx);
1568 OCSP_RESPONSE *process_responder(OCSP_REQUEST *req,
1569 const char *host, const char *path,
1570 const char *port, int use_ssl,
1571 STACK_OF(CONF_VALUE) *headers,
1575 SSL_CTX *ctx = NULL;
1576 OCSP_RESPONSE *resp = NULL;
1578 cbio = BIO_new_connect(host);
1580 BIO_printf(bio_err, "Error creating connect BIO\n");
1584 BIO_set_conn_port(cbio, port);
1587 ctx = SSL_CTX_new(TLS_client_method());
1589 BIO_printf(bio_err, "Error creating SSL context.\n");
1592 SSL_CTX_set_mode(ctx, SSL_MODE_AUTO_RETRY);
1593 sbio = BIO_new_ssl(ctx, 1);
1594 cbio = BIO_push(sbio, cbio);
1597 resp = query_responder(cbio, host, path, headers, req, req_timeout);
1599 BIO_printf(bio_err, "Error querying OCSP responder\n");