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 /* Maximum leeway in validity period: default 5 minutes */
57 # define MAX_VALIDITY_PERIOD (5 * 60)
59 static int add_ocsp_cert(OCSP_REQUEST **req, X509 *cert,
60 const EVP_MD *cert_id_md, X509 *issuer,
61 STACK_OF(OCSP_CERTID) *ids);
62 static int add_ocsp_serial(OCSP_REQUEST **req, char *serial,
63 const EVP_MD *cert_id_md, X509 *issuer,
64 STACK_OF(OCSP_CERTID) *ids);
65 static void print_ocsp_summary(BIO *out, OCSP_BASICRESP *bs, OCSP_REQUEST *req,
66 STACK_OF(OPENSSL_STRING) *names,
67 STACK_OF(OCSP_CERTID) *ids, long nsec,
69 static void make_ocsp_response(BIO *err, OCSP_RESPONSE **resp, OCSP_REQUEST *req,
70 CA_DB *db, STACK_OF(X509) *ca, X509 *rcert,
71 EVP_PKEY *rkey, const EVP_MD *md,
72 STACK_OF(OPENSSL_STRING) *sigopts,
73 STACK_OF(X509) *rother, unsigned long flags,
74 int nmin, int ndays, int badsig);
76 static char **lookup_serial(CA_DB *db, ASN1_INTEGER *ser);
77 static BIO *init_responder(const char *port);
78 static int do_responder(OCSP_REQUEST **preq, BIO **pcbio, BIO *acbio, int timeout);
79 static int send_ocsp_response(BIO *cbio, OCSP_RESPONSE *resp);
80 static void log_message(int level, const char *fmt, ...);
85 static int acfd = (int) INVALID_SOCKET;
86 static int index_changed(CA_DB *);
87 static void spawn_loop(void);
88 static int print_syslog(const char *str, size_t len, void *levPtr);
89 static void sock_timeout(int signum);
92 # ifndef OPENSSL_NO_SOCK
93 static OCSP_RESPONSE *query_responder(BIO *cbio, const char *host,
95 const STACK_OF(CONF_VALUE) *headers,
96 OCSP_REQUEST *req, int req_timeout);
99 typedef enum OPTION_choice {
100 OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
101 OPT_OUTFILE, OPT_TIMEOUT, OPT_URL, OPT_HOST, OPT_PORT,
102 OPT_IGNORE_ERR, OPT_NOVERIFY, OPT_NONCE, OPT_NO_NONCE,
103 OPT_RESP_NO_CERTS, OPT_RESP_KEY_ID, OPT_NO_CERTS,
104 OPT_NO_SIGNATURE_VERIFY, OPT_NO_CERT_VERIFY, OPT_NO_CHAIN,
105 OPT_NO_CERT_CHECKS, OPT_NO_EXPLICIT, OPT_TRUST_OTHER,
106 OPT_NO_INTERN, OPT_BADSIG, OPT_TEXT, OPT_REQ_TEXT, OPT_RESP_TEXT,
107 OPT_REQIN, OPT_RESPIN, OPT_SIGNER, OPT_VAFILE, OPT_SIGN_OTHER,
108 OPT_VERIFY_OTHER, OPT_CAFILE, OPT_CAPATH, OPT_NOCAFILE, OPT_NOCAPATH,
109 OPT_VALIDITY_PERIOD, OPT_STATUS_AGE, OPT_SIGNKEY, OPT_REQOUT,
110 OPT_RESPOUT, OPT_PATH, OPT_ISSUER, OPT_CERT, OPT_SERIAL,
111 OPT_INDEX, OPT_CA, OPT_NMIN, OPT_REQUEST, OPT_NDAYS, OPT_RSIGNER,
112 OPT_RKEY, OPT_ROTHER, OPT_RMD, OPT_RSIGOPT, OPT_HEADER,
118 const OPTIONS ocsp_options[] = {
119 {"help", OPT_HELP, '-', "Display this summary"},
120 {"out", OPT_OUTFILE, '>', "Output filename"},
121 {"timeout", OPT_TIMEOUT, 'p',
122 "Connection timeout (in seconds) to the OCSP responder"},
123 {"url", OPT_URL, 's', "Responder URL"},
124 {"host", OPT_HOST, 's', "TCP/IP hostname:port to connect to"},
125 {"port", OPT_PORT, 'p', "Port to run responder on"},
126 {"ignore_err", OPT_IGNORE_ERR, '-',
127 "Ignore error on OCSP request or response and continue running"},
128 {"noverify", OPT_NOVERIFY, '-', "Don't verify response at all"},
129 {"nonce", OPT_NONCE, '-', "Add OCSP nonce to request"},
130 {"no_nonce", OPT_NO_NONCE, '-', "Don't add OCSP nonce to request"},
131 {"resp_no_certs", OPT_RESP_NO_CERTS, '-',
132 "Don't include any certificates in response"},
133 {"resp_key_id", OPT_RESP_KEY_ID, '-',
134 "Identify response by signing certificate key ID"},
136 {"multi", OPT_MULTI, 'p', "run multiple responder processes"},
138 {"no_certs", OPT_NO_CERTS, '-',
139 "Don't include any certificates in signed request"},
140 {"no_signature_verify", OPT_NO_SIGNATURE_VERIFY, '-',
141 "Don't check signature on response"},
142 {"no_cert_verify", OPT_NO_CERT_VERIFY, '-',
143 "Don't check signing certificate"},
144 {"no_chain", OPT_NO_CHAIN, '-', "Don't chain verify response"},
145 {"no_cert_checks", OPT_NO_CERT_CHECKS, '-',
146 "Don't do additional checks on signing certificate"},
147 {"no_explicit", OPT_NO_EXPLICIT, '-',
148 "Do not explicitly check the chain, just verify the root"},
149 {"trust_other", OPT_TRUST_OTHER, '-',
150 "Don't verify additional certificates"},
151 {"no_intern", OPT_NO_INTERN, '-',
152 "Don't search certificates contained in response for signer"},
153 {"badsig", OPT_BADSIG, '-',
154 "Corrupt last byte of loaded OSCP response signature (for test)"},
155 {"text", OPT_TEXT, '-', "Print text form of request and response"},
156 {"req_text", OPT_REQ_TEXT, '-', "Print text form of request"},
157 {"resp_text", OPT_RESP_TEXT, '-', "Print text form of response"},
158 {"reqin", OPT_REQIN, 's', "File with the DER-encoded request"},
159 {"respin", OPT_RESPIN, 's', "File with the DER-encoded response"},
160 {"signer", OPT_SIGNER, '<', "Certificate to sign OCSP request with"},
161 {"VAfile", OPT_VAFILE, '<', "Validator certificates file"},
162 {"sign_other", OPT_SIGN_OTHER, '<',
163 "Additional certificates to include in signed request"},
164 {"verify_other", OPT_VERIFY_OTHER, '<',
165 "Additional certificates to search for signer"},
166 {"CAfile", OPT_CAFILE, '<', "Trusted certificates file"},
167 {"CApath", OPT_CAPATH, '<', "Trusted certificates directory"},
168 {"no-CAfile", OPT_NOCAFILE, '-',
169 "Do not load the default certificates file"},
170 {"no-CApath", OPT_NOCAPATH, '-',
171 "Do not load certificates from the default certificates directory"},
172 {"validity_period", OPT_VALIDITY_PERIOD, 'u',
173 "Maximum validity discrepancy in seconds"},
174 {"status_age", OPT_STATUS_AGE, 'p', "Maximum status age in seconds"},
175 {"signkey", OPT_SIGNKEY, 's', "Private key to sign OCSP request with"},
176 {"reqout", OPT_REQOUT, 's', "Output file for the DER-encoded request"},
177 {"respout", OPT_RESPOUT, 's', "Output file for the DER-encoded response"},
178 {"path", OPT_PATH, 's', "Path to use in OCSP request"},
179 {"issuer", OPT_ISSUER, '<', "Issuer certificate"},
180 {"cert", OPT_CERT, '<', "Certificate to check"},
181 {"serial", OPT_SERIAL, 's', "Serial number to check"},
182 {"index", OPT_INDEX, '<', "Certificate status index file"},
183 {"CA", OPT_CA, '<', "CA certificate"},
184 {"nmin", OPT_NMIN, 'p', "Number of minutes before next update"},
185 {"nrequest", OPT_REQUEST, 'p',
186 "Number of requests to accept (default unlimited)"},
187 {"ndays", OPT_NDAYS, 'p', "Number of days before next update"},
188 {"rsigner", OPT_RSIGNER, '<',
189 "Responder certificate to sign responses with"},
190 {"rkey", OPT_RKEY, '<', "Responder key to sign responses with"},
191 {"rother", OPT_ROTHER, '<', "Other certificates to include in response"},
192 {"rmd", OPT_RMD, 's', "Digest Algorithm to use in signature of OCSP response"},
193 {"rsigopt", OPT_RSIGOPT, 's', "OCSP response signature parameter in n:v form"},
194 {"header", OPT_HEADER, 's', "key=value header to add"},
195 {"", OPT_MD, '-', "Any supported digest algorithm (sha1,sha256, ... )"},
200 int ocsp_main(int argc, char **argv)
202 BIO *acbio = NULL, *cbio = NULL, *derbio = NULL, *out = NULL;
203 const EVP_MD *cert_id_md = NULL, *rsign_md = NULL;
204 STACK_OF(OPENSSL_STRING) *rsign_sigopts = NULL;
207 EVP_PKEY *key = NULL, *rkey = NULL;
208 OCSP_BASICRESP *bs = NULL;
209 OCSP_REQUEST *req = NULL;
210 OCSP_RESPONSE *resp = NULL;
211 STACK_OF(CONF_VALUE) *headers = NULL;
212 STACK_OF(OCSP_CERTID) *ids = NULL;
213 STACK_OF(OPENSSL_STRING) *reqnames = NULL;
214 STACK_OF(X509) *sign_other = NULL, *verify_other = NULL, *rother = NULL;
215 STACK_OF(X509) *issuers = NULL;
216 X509 *issuer = NULL, *cert = NULL;
217 STACK_OF(X509) *rca_cert = NULL;
218 X509 *signer = NULL, *rsigner = NULL;
219 X509_STORE *store = NULL;
220 X509_VERIFY_PARAM *vpm = NULL;
221 const char *CAfile = NULL, *CApath = NULL;
222 char *header, *value;
223 char *host = NULL, *port = NULL, *path = "/", *outfile = NULL;
224 char *rca_filename = NULL, *reqin = NULL, *respin = NULL;
225 char *reqout = NULL, *respout = NULL, *ridx_filename = NULL;
226 char *rsignfile = NULL, *rkeyfile = NULL;
227 char *sign_certfile = NULL, *verify_certfile = NULL, *rcertfile = NULL;
228 char *signfile = NULL, *keyfile = NULL;
229 char *thost = NULL, *tport = NULL, *tpath = NULL;
230 int noCAfile = 0, noCApath = 0;
231 int accept_count = -1, add_nonce = 1, noverify = 0, use_ssl = -1;
232 int vpmtouched = 0, badsig = 0, i, ignore_err = 0, nmin = 0, ndays = -1;
233 int req_text = 0, resp_text = 0, ret = 1;
234 int req_timeout = -1;
235 long nsec = MAX_VALIDITY_PERIOD, maxage = -1;
236 unsigned long sign_flags = 0, verify_flags = 0, rflags = 0;
239 reqnames = sk_OPENSSL_STRING_new_null();
240 if (reqnames == NULL)
242 ids = sk_OCSP_CERTID_new_null();
245 if ((vpm = X509_VERIFY_PARAM_new()) == NULL)
248 prog = opt_init(argc, argv, ocsp_options);
249 while ((o = opt_next()) != OPT_EOF) {
254 BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
258 opt_help(ocsp_options);
264 #ifndef OPENSSL_NO_SOCK
265 req_timeout = atoi(opt_arg());
272 thost = tport = tpath = NULL;
273 if (!OCSP_parse_url(opt_arg(), &host, &port, &path, &use_ssl)) {
274 BIO_printf(bio_err, "%s Error parsing URL\n", prog);
299 case OPT_RESP_NO_CERTS:
300 rflags |= OCSP_NOCERTS;
302 case OPT_RESP_KEY_ID:
303 rflags |= OCSP_RESPID_KEY;
306 sign_flags |= OCSP_NOCERTS;
308 case OPT_NO_SIGNATURE_VERIFY:
309 verify_flags |= OCSP_NOSIGS;
311 case OPT_NO_CERT_VERIFY:
312 verify_flags |= OCSP_NOVERIFY;
315 verify_flags |= OCSP_NOCHAIN;
317 case OPT_NO_CERT_CHECKS:
318 verify_flags |= OCSP_NOCHECKS;
320 case OPT_NO_EXPLICIT:
321 verify_flags |= OCSP_NOEXPLICIT;
323 case OPT_TRUST_OTHER:
324 verify_flags |= OCSP_TRUSTOTHER;
327 verify_flags |= OCSP_NOINTERN;
333 req_text = resp_text = 1;
348 signfile = opt_arg();
351 verify_certfile = opt_arg();
352 verify_flags |= OCSP_TRUSTOTHER;
355 sign_certfile = opt_arg();
357 case OPT_VERIFY_OTHER:
358 verify_certfile = opt_arg();
373 if (!opt_verify(o, vpm))
377 case OPT_VALIDITY_PERIOD:
378 opt_long(opt_arg(), &nsec);
381 opt_long(opt_arg(), &maxage);
396 issuer = load_cert(opt_arg(), FORMAT_PEM, "issuer certificate");
399 if (issuers == NULL) {
400 if ((issuers = sk_X509_new_null()) == NULL)
403 sk_X509_push(issuers, issuer);
407 cert = load_cert(opt_arg(), FORMAT_PEM, "certificate");
410 if (cert_id_md == NULL)
411 cert_id_md = EVP_sha1();
412 if (!add_ocsp_cert(&req, cert, cert_id_md, issuer, ids))
414 if (!sk_OPENSSL_STRING_push(reqnames, opt_arg()))
419 if (cert_id_md == NULL)
420 cert_id_md = EVP_sha1();
421 if (!add_ocsp_serial(&req, opt_arg(), cert_id_md, issuer, ids))
423 if (!sk_OPENSSL_STRING_push(reqnames, opt_arg()))
428 ridx_filename = opt_arg();
431 rca_filename = opt_arg();
434 opt_int(opt_arg(), &nmin);
439 opt_int(opt_arg(), &accept_count);
442 ndays = atoi(opt_arg());
445 rsignfile = opt_arg();
448 rkeyfile = opt_arg();
451 rcertfile = opt_arg();
453 case OPT_RMD: /* Response MessageDigest */
454 if (!opt_md(opt_arg(), &rsign_md))
458 if (rsign_sigopts == NULL)
459 rsign_sigopts = sk_OPENSSL_STRING_new_null();
460 if (rsign_sigopts == NULL || !sk_OPENSSL_STRING_push(rsign_sigopts, opt_arg()))
465 value = strchr(header, '=');
467 BIO_printf(bio_err, "Missing = in header key=value\n");
471 if (!X509V3_add_value(header, value, &headers))
477 "%s: Digest must be before -cert or -serial\n",
481 if (!opt_md(opt_unknown(), &cert_id_md))
487 multi = atoi(opt_arg());
493 BIO_printf(bio_err, "%s: Digest must be before -cert or -serial\n",
497 argc = opt_num_rest();
501 /* Have we anything to do? */
502 if (req == NULL && reqin == NULL
503 && respin == NULL && !(port != NULL && ridx_filename != NULL))
506 out = bio_open_default(outfile, 'w', FORMAT_TEXT);
510 if (req == NULL && (add_nonce != 2))
513 if (req == NULL && reqin != NULL) {
514 derbio = bio_open_default(reqin, 'r', FORMAT_ASN1);
517 req = d2i_OCSP_REQUEST_bio(derbio, NULL);
520 BIO_printf(bio_err, "Error reading OCSP request\n");
525 if (req == NULL && port != NULL) {
526 acbio = init_responder(port);
531 if (rsignfile != NULL) {
532 if (rkeyfile == NULL)
533 rkeyfile = rsignfile;
534 rsigner = load_cert(rsignfile, FORMAT_PEM, "responder certificate");
535 if (rsigner == NULL) {
536 BIO_printf(bio_err, "Error loading responder certificate\n");
539 if (!load_certs(rca_filename, &rca_cert, FORMAT_PEM,
540 NULL, "CA certificate"))
542 if (rcertfile != NULL) {
543 if (!load_certs(rcertfile, &rother, FORMAT_PEM, NULL,
544 "responder other certificates"))
547 rkey = load_key(rkeyfile, FORMAT_PEM, 0, NULL, NULL,
548 "responder private key");
553 if (ridx_filename != NULL
554 && (rkey == NULL || rsigner == NULL || rca_cert == NULL)) {
556 "Responder mode requires certificate, key, and CA.\n");
560 if (ridx_filename != NULL) {
561 rdb = load_index(ridx_filename, NULL);
562 if (rdb == NULL || !index_index(rdb)) {
569 if (multi && acbio != NULL)
571 if (acbio != NULL && req_timeout > 0)
572 signal(SIGALRM, sock_timeout);
576 log_message(LOG_INFO, "waiting for OCSP client connections...");
582 if (index_changed(rdb)) {
583 CA_DB *newrdb = load_index(ridx_filename, NULL);
585 if (newrdb != NULL) {
589 log_message(LOG_ERR, "error reloading updated index: %s",
596 if (!do_responder(&req, &cbio, acbio, req_timeout))
601 OCSP_response_create(OCSP_RESPONSE_STATUS_MALFORMEDREQUEST,
603 send_ocsp_response(cbio, resp);
609 && (signfile != NULL || reqout != NULL
610 || host != NULL || add_nonce || ridx_filename != NULL)) {
611 BIO_printf(bio_err, "Need an OCSP request for this operation!\n");
615 if (req != NULL && add_nonce)
616 OCSP_request_add1_nonce(req, NULL, -1);
618 if (signfile != NULL) {
621 signer = load_cert(signfile, FORMAT_PEM, "signer certificate");
622 if (signer == NULL) {
623 BIO_printf(bio_err, "Error loading signer certificate\n");
626 if (sign_certfile != NULL) {
627 if (!load_certs(sign_certfile, &sign_other, FORMAT_PEM, NULL,
628 "signer certificates"))
631 key = load_key(keyfile, FORMAT_PEM, 0, NULL, NULL,
632 "signer private key");
636 if (!OCSP_request_sign
637 (req, signer, key, NULL, sign_other, sign_flags)) {
638 BIO_printf(bio_err, "Error signing OCSP request\n");
643 if (req_text && req != NULL)
644 OCSP_REQUEST_print(out, req, 0);
646 if (reqout != NULL) {
647 derbio = bio_open_default(reqout, 'w', FORMAT_ASN1);
650 i2d_OCSP_REQUEST_bio(derbio, req);
655 make_ocsp_response(bio_err, &resp, req, rdb, rca_cert, rsigner, rkey,
656 rsign_md, rsign_sigopts, rother, rflags, nmin, ndays, badsig);
658 send_ocsp_response(cbio, resp);
659 } else if (host != NULL) {
660 # ifndef OPENSSL_NO_SOCK
661 resp = process_responder(req, host, path,
662 port, use_ssl, headers, req_timeout);
667 "Error creating connect BIO - sockets not supported.\n");
670 } else if (respin != NULL) {
671 derbio = bio_open_default(respin, 'r', FORMAT_ASN1);
674 resp = d2i_OCSP_RESPONSE_bio(derbio, NULL);
677 BIO_printf(bio_err, "Error reading OCSP response\n");
687 if (respout != NULL) {
688 derbio = bio_open_default(respout, 'w', FORMAT_ASN1);
691 i2d_OCSP_RESPONSE_bio(derbio, resp);
695 i = OCSP_response_status(resp);
696 if (i != OCSP_RESPONSE_STATUS_SUCCESSFUL) {
697 BIO_printf(out, "Responder Error: %s (%d)\n",
698 OCSP_response_status_str(i), i);
706 OCSP_RESPONSE_print(out, resp, 0);
708 /* If running as responder don't verify our own response */
710 /* If not unlimited, see if we took all we should. */
711 if (accept_count != -1 && --accept_count <= 0) {
717 OCSP_REQUEST_free(req);
719 OCSP_RESPONSE_free(resp);
723 if (ridx_filename != NULL) {
729 store = setup_verify(CAfile, CApath, noCAfile, noCApath);
734 X509_STORE_set1_param(store, vpm);
735 if (verify_certfile != NULL) {
736 if (!load_certs(verify_certfile, &verify_other, FORMAT_PEM, NULL,
737 "validator certificate"))
741 bs = OCSP_response_get1_basic(resp);
743 BIO_printf(bio_err, "Error parsing response\n");
750 if (req != NULL && ((i = OCSP_check_nonce(req, bs)) <= 0)) {
752 BIO_printf(bio_err, "WARNING: no nonce in response\n");
754 BIO_printf(bio_err, "Nonce Verify error\n");
760 i = OCSP_basic_verify(bs, verify_other, store, verify_flags);
761 if (i <= 0 && issuers) {
762 i = OCSP_basic_verify(bs, issuers, store, OCSP_TRUSTOTHER);
767 BIO_printf(bio_err, "Response Verify Failure\n");
768 ERR_print_errors(bio_err);
771 BIO_printf(bio_err, "Response verify OK\n");
775 print_ocsp_summary(out, bs, req, reqnames, ids, nsec, maxage);
778 ERR_print_errors(bio_err);
780 X509_STORE_free(store);
781 X509_VERIFY_PARAM_free(vpm);
782 sk_OPENSSL_STRING_free(rsign_sigopts);
786 sk_X509_pop_free(issuers, X509_free);
788 sk_X509_pop_free(rca_cert, X509_free);
793 OCSP_REQUEST_free(req);
794 OCSP_RESPONSE_free(resp);
795 OCSP_BASICRESP_free(bs);
796 sk_OPENSSL_STRING_free(reqnames);
797 sk_OCSP_CERTID_free(ids);
798 sk_X509_pop_free(sign_other, X509_free);
799 sk_X509_pop_free(verify_other, X509_free);
800 sk_CONF_VALUE_pop_free(headers, X509V3_conf_free);
809 log_message(int level, const char *fmt, ...)
817 if (vsnprintf(buf, sizeof(buf), fmt, ap) > 0) {
818 syslog(level, "%s", buf);
820 if (level >= LOG_ERR)
821 ERR_print_errors_cb(print_syslog, &level);
825 BIO_printf(bio_err, "%s: ", prog);
826 BIO_vprintf(bio_err, fmt, ap);
827 BIO_printf(bio_err, "\n");
834 static int print_syslog(const char *str, size_t len, void *levPtr)
836 int level = *(int *)levPtr;
837 int ilen = (len > MAXERRLEN) ? MAXERRLEN : len;
839 syslog(level, "%.*s", ilen, str);
844 static int index_changed(CA_DB *rdb)
848 if (rdb != NULL && stat(rdb->dbfname, &sb) != -1) {
849 if (rdb->dbst.st_mtime != sb.st_mtime
850 || rdb->dbst.st_ctime != sb.st_ctime
851 || rdb->dbst.st_ino != sb.st_ino
852 || rdb->dbst.st_dev != sb.st_dev) {
853 syslog(LOG_INFO, "index file changed, reloading");
860 static void killall(int ret, pid_t *kidpids)
864 for (i = 0; i < multi; ++i)
866 (void)kill(kidpids[i], SIGTERM);
871 static int termsig = 0;
873 static void noteterm (int sig)
879 * Loop spawning up to `multi` child processes, only child processes return
880 * from this function. The parent process loops until receiving a termination
881 * signal, kills extant children and exits without returning.
883 static void spawn_loop(void)
885 pid_t *kidpids = NULL;
890 openlog(prog, LOG_PID, LOG_DAEMON);
893 syslog(LOG_ERR, "fatal: error detaching from parent process group: %s",
897 kidpids = app_malloc(multi * sizeof(*kidpids), "child PID array");
898 for (i = 0; i < multi; ++i)
901 signal(SIGINT, noteterm);
902 signal(SIGTERM, noteterm);
904 while (termsig == 0) {
908 * Wait for a child to replace when we're at the limit.
909 * Slow down if a child exited abnormally or waitpid() < 0
911 while (termsig == 0 && procs >= multi) {
912 if ((fpid = waitpid(-1, &status, 0)) > 0) {
913 for (i = 0; i < procs; ++i) {
914 if (kidpids[i] == fpid) {
921 syslog(LOG_ERR, "fatal: internal error: "
922 "no matching child slot for pid: %ld",
927 if (WIFEXITED(status))
928 syslog(LOG_WARNING, "child process: %ld, exit status: %d",
929 (long)fpid, WEXITSTATUS(status));
930 else if (WIFSIGNALED(status))
931 syslog(LOG_WARNING, "child process: %ld, term signal %d%s",
932 (long)fpid, WTERMSIG(status),
934 WCOREDUMP(status) ? " (core dumped)" :
940 } else if (errno != EINTR) {
941 syslog(LOG_ERR, "fatal: waitpid(): %s", strerror(errno));
948 switch(fpid = fork()) {
950 /* System critically low on memory, pause and try again later */
954 signal(SIGINT, SIG_DFL);
955 signal(SIGTERM, SIG_DFL);
958 if (RAND_poll() <= 0) {
959 syslog(LOG_ERR, "fatal: RAND_poll() failed");
963 default: /* parent */
964 for (i = 0; i < multi; ++i) {
965 if (kidpids[i] == 0) {
972 syslog(LOG_ERR, "fatal: internal error: no free child slots");
979 /* The loop above can only break on termsig */
980 syslog(LOG_INFO, "terminating on signal: %d", termsig);
985 static int add_ocsp_cert(OCSP_REQUEST **req, X509 *cert,
986 const EVP_MD *cert_id_md, X509 *issuer,
987 STACK_OF(OCSP_CERTID) *ids)
991 if (issuer == NULL) {
992 BIO_printf(bio_err, "No issuer certificate specified\n");
996 *req = OCSP_REQUEST_new();
999 id = OCSP_cert_to_id(cert_id_md, cert, issuer);
1000 if (id == NULL || !sk_OCSP_CERTID_push(ids, id))
1002 if (!OCSP_request_add0_id(*req, id))
1007 BIO_printf(bio_err, "Error Creating OCSP request\n");
1011 static int add_ocsp_serial(OCSP_REQUEST **req, char *serial,
1012 const EVP_MD *cert_id_md, X509 *issuer,
1013 STACK_OF(OCSP_CERTID) *ids)
1017 ASN1_BIT_STRING *ikey;
1020 if (issuer == NULL) {
1021 BIO_printf(bio_err, "No issuer certificate specified\n");
1025 *req = OCSP_REQUEST_new();
1028 iname = X509_get_subject_name(issuer);
1029 ikey = X509_get0_pubkey_bitstr(issuer);
1030 sno = s2i_ASN1_INTEGER(NULL, serial);
1032 BIO_printf(bio_err, "Error converting serial number %s\n", serial);
1035 id = OCSP_cert_id_new(cert_id_md, iname, ikey, sno);
1036 ASN1_INTEGER_free(sno);
1037 if (id == NULL || !sk_OCSP_CERTID_push(ids, id))
1039 if (!OCSP_request_add0_id(*req, id))
1044 BIO_printf(bio_err, "Error Creating OCSP request\n");
1048 static void print_ocsp_summary(BIO *out, OCSP_BASICRESP *bs, OCSP_REQUEST *req,
1049 STACK_OF(OPENSSL_STRING) *names,
1050 STACK_OF(OCSP_CERTID) *ids, long nsec,
1055 int i, status, reason;
1056 ASN1_GENERALIZEDTIME *rev, *thisupd, *nextupd;
1058 if (bs == NULL || req == NULL || !sk_OPENSSL_STRING_num(names)
1059 || !sk_OCSP_CERTID_num(ids))
1062 for (i = 0; i < sk_OCSP_CERTID_num(ids); i++) {
1063 id = sk_OCSP_CERTID_value(ids, i);
1064 name = sk_OPENSSL_STRING_value(names, i);
1065 BIO_printf(out, "%s: ", name);
1067 if (!OCSP_resp_find_status(bs, id, &status, &reason,
1068 &rev, &thisupd, &nextupd)) {
1069 BIO_puts(out, "ERROR: No Status found.\n");
1074 * Check validity: if invalid write to output BIO so we know which
1075 * response this refers to.
1077 if (!OCSP_check_validity(thisupd, nextupd, nsec, maxage)) {
1078 BIO_puts(out, "WARNING: Status times invalid.\n");
1079 ERR_print_errors(out);
1081 BIO_printf(out, "%s\n", OCSP_cert_status_str(status));
1083 BIO_puts(out, "\tThis Update: ");
1084 ASN1_GENERALIZEDTIME_print(out, thisupd);
1085 BIO_puts(out, "\n");
1088 BIO_puts(out, "\tNext Update: ");
1089 ASN1_GENERALIZEDTIME_print(out, nextupd);
1090 BIO_puts(out, "\n");
1093 if (status != V_OCSP_CERTSTATUS_REVOKED)
1097 BIO_printf(out, "\tReason: %s\n", OCSP_crl_reason_str(reason));
1099 BIO_puts(out, "\tRevocation Time: ");
1100 ASN1_GENERALIZEDTIME_print(out, rev);
1101 BIO_puts(out, "\n");
1105 static void make_ocsp_response(BIO *err, OCSP_RESPONSE **resp, OCSP_REQUEST *req,
1106 CA_DB *db, STACK_OF(X509) *ca, X509 *rcert,
1107 EVP_PKEY *rkey, const EVP_MD *rmd,
1108 STACK_OF(OPENSSL_STRING) *sigopts,
1109 STACK_OF(X509) *rother, unsigned long flags,
1110 int nmin, int ndays, int badsig)
1112 ASN1_TIME *thisupd = NULL, *nextupd = NULL;
1114 OCSP_BASICRESP *bs = NULL;
1116 EVP_MD_CTX *mctx = NULL;
1117 EVP_PKEY_CTX *pkctx = NULL;
1119 id_count = OCSP_request_onereq_count(req);
1121 if (id_count <= 0) {
1123 OCSP_response_create(OCSP_RESPONSE_STATUS_MALFORMEDREQUEST, NULL);
1127 bs = OCSP_BASICRESP_new();
1128 thisupd = X509_gmtime_adj(NULL, 0);
1130 nextupd = X509_time_adj_ex(NULL, ndays, nmin * 60, NULL);
1132 /* Examine each certificate id in the request */
1133 for (i = 0; i < id_count; i++) {
1135 ASN1_INTEGER *serial;
1139 ASN1_OBJECT *cert_id_md_oid;
1140 const EVP_MD *cert_id_md;
1141 one = OCSP_request_onereq_get0(req, i);
1142 cid = OCSP_onereq_get0_id(one);
1144 OCSP_id_get0_info(NULL, &cert_id_md_oid, NULL, NULL, cid);
1146 cert_id_md = EVP_get_digestbyobj(cert_id_md_oid);
1147 if (cert_id_md == NULL) {
1148 *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_INTERNALERROR,
1152 for (jj = 0; jj < sk_X509_num(ca) && !found; jj++) {
1153 X509 *ca_cert = sk_X509_value(ca, jj);
1154 OCSP_CERTID *ca_id = OCSP_cert_to_id(cert_id_md, NULL, ca_cert);
1156 if (OCSP_id_issuer_cmp(ca_id, cid) == 0)
1159 OCSP_CERTID_free(ca_id);
1163 OCSP_basic_add1_status(bs, cid,
1164 V_OCSP_CERTSTATUS_UNKNOWN,
1165 0, NULL, thisupd, nextupd);
1168 OCSP_id_get0_info(NULL, NULL, NULL, &serial, cid);
1169 inf = lookup_serial(db, serial);
1171 OCSP_basic_add1_status(bs, cid,
1172 V_OCSP_CERTSTATUS_UNKNOWN,
1173 0, NULL, thisupd, nextupd);
1174 } else if (inf[DB_type][0] == DB_TYPE_VAL) {
1175 OCSP_basic_add1_status(bs, cid,
1176 V_OCSP_CERTSTATUS_GOOD,
1177 0, NULL, thisupd, nextupd);
1178 } else if (inf[DB_type][0] == DB_TYPE_REV) {
1179 ASN1_OBJECT *inst = NULL;
1180 ASN1_TIME *revtm = NULL;
1181 ASN1_GENERALIZEDTIME *invtm = NULL;
1182 OCSP_SINGLERESP *single;
1184 unpack_revinfo(&revtm, &reason, &inst, &invtm, inf[DB_rev_date]);
1185 single = OCSP_basic_add1_status(bs, cid,
1186 V_OCSP_CERTSTATUS_REVOKED,
1187 reason, revtm, thisupd, nextupd);
1189 OCSP_SINGLERESP_add1_ext_i2d(single, NID_invalidity_date,
1191 else if (inst != NULL)
1192 OCSP_SINGLERESP_add1_ext_i2d(single,
1193 NID_hold_instruction_code, inst,
1195 ASN1_OBJECT_free(inst);
1196 ASN1_TIME_free(revtm);
1197 ASN1_GENERALIZEDTIME_free(invtm);
1201 OCSP_copy_nonce(bs, req);
1203 mctx = EVP_MD_CTX_new();
1204 if ( mctx == NULL || !EVP_DigestSignInit(mctx, &pkctx, rmd, NULL, rkey)) {
1205 *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_INTERNALERROR, NULL);
1208 for (i = 0; i < sk_OPENSSL_STRING_num(sigopts); i++) {
1209 char *sigopt = sk_OPENSSL_STRING_value(sigopts, i);
1211 if (pkey_ctrl_string(pkctx, sigopt) <= 0) {
1212 BIO_printf(err, "parameter error \"%s\"\n", sigopt);
1213 ERR_print_errors(bio_err);
1214 *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_INTERNALERROR,
1219 OCSP_basic_sign_ctx(bs, rcert, mctx, rother, flags);
1222 const ASN1_OCTET_STRING *sig = OCSP_resp_get0_signature(bs);
1223 corrupt_signature(sig);
1226 *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_SUCCESSFUL, bs);
1229 EVP_MD_CTX_free(mctx);
1230 ASN1_TIME_free(thisupd);
1231 ASN1_TIME_free(nextupd);
1232 OCSP_BASICRESP_free(bs);
1235 static char **lookup_serial(CA_DB *db, ASN1_INTEGER *ser)
1239 char *itmp, *row[DB_NUMBER], **rrow;
1240 for (i = 0; i < DB_NUMBER; i++)
1242 bn = ASN1_INTEGER_to_BN(ser, NULL);
1243 OPENSSL_assert(bn); /* FIXME: should report an error at this
1244 * point and abort */
1246 itmp = OPENSSL_strdup("00");
1248 itmp = BN_bn2hex(bn);
1249 row[DB_serial] = itmp;
1251 rrow = TXT_DB_get_by_index(db->db, DB_serial, row);
1256 /* Quick and dirty OCSP server: read in and parse input request */
1258 static BIO *init_responder(const char *port)
1260 # ifdef OPENSSL_NO_SOCK
1262 "Error setting up accept BIO - sockets not supported.\n");
1265 BIO *acbio = NULL, *bufbio = NULL;
1267 bufbio = BIO_new(BIO_f_buffer());
1270 acbio = BIO_new(BIO_s_accept());
1272 || BIO_set_bind_mode(acbio, BIO_BIND_REUSEADDR) < 0
1273 || BIO_set_accept_port(acbio, port) < 0) {
1274 log_message(LOG_ERR, "Error setting up accept BIO");
1278 BIO_set_accept_bios(acbio, bufbio);
1280 if (BIO_do_accept(acbio) <= 0) {
1281 log_message(LOG_ERR, "Error starting accept");
1288 BIO_free_all(acbio);
1294 # ifndef OPENSSL_NO_SOCK
1296 * Decode %xx URL-decoding in-place. Ignores mal-formed sequences.
1298 static int urldecode(char *p)
1300 unsigned char *out = (unsigned char *)p;
1301 unsigned char *save = out;
1306 else if (isxdigit(_UC(p[1])) && isxdigit(_UC(p[2]))) {
1307 /* Don't check, can't fail because of ixdigit() call. */
1308 *out++ = (OPENSSL_hexchar2int(p[1]) << 4)
1309 | OPENSSL_hexchar2int(p[2]);
1316 return (int)(out - save);
1321 static void sock_timeout(int signum)
1323 if (acfd != (int)INVALID_SOCKET)
1324 (void)shutdown(acfd, SHUT_RD);
1328 static int do_responder(OCSP_REQUEST **preq, BIO **pcbio, BIO *acbio,
1331 # ifdef OPENSSL_NO_SOCK
1335 OCSP_REQUEST *req = NULL;
1336 char inbuf[2048], reqbuf[2048];
1338 BIO *cbio = NULL, *getbio = NULL, *b64 = NULL;
1343 /* Connection loss before accept() is routine, ignore silently */
1344 if (BIO_do_accept(acbio) <= 0)
1347 cbio = BIO_pop(acbio);
1349 client = BIO_get_peer_name(cbio);
1353 (void) BIO_get_fd(cbio, &acfd);
1358 /* Read the request line. */
1359 len = BIO_gets(cbio, reqbuf, sizeof(reqbuf));
1363 if (strncmp(reqbuf, "GET ", 4) == 0) {
1364 /* Expecting GET {sp} /URL {sp} HTTP/1.x */
1365 for (p = reqbuf + 4; *p == ' '; ++p)
1368 log_message(LOG_INFO, "Invalid request -- bad URL: %s", client);
1373 /* Splice off the HTTP version identifier. */
1374 for (q = p; *q; q++)
1377 if (strncmp(q, " HTTP/1.", 8) != 0) {
1378 log_message(LOG_INFO,
1379 "Invalid request -- bad HTTP version: %s", client);
1385 * Skip "GET / HTTP..." requests often used by load-balancers
1392 log_message(LOG_INFO,
1393 "Invalid request -- bad URL encoding: %s", client);
1396 if ((getbio = BIO_new_mem_buf(p, len)) == NULL
1397 || (b64 = BIO_new(BIO_f_base64())) == NULL) {
1398 log_message(LOG_ERR, "Could not allocate base64 bio: %s", client);
1401 BIO_set_flags(b64, BIO_FLAGS_BASE64_NO_NL);
1402 getbio = BIO_push(b64, getbio);
1403 } else if (strncmp(reqbuf, "POST ", 5) != 0) {
1404 log_message(LOG_INFO, "Invalid request -- bad HTTP verb: %s", client);
1408 /* Read and skip past the headers. */
1410 len = BIO_gets(cbio, inbuf, sizeof(inbuf));
1413 if ((inbuf[0] == '\r') || (inbuf[0] == '\n'))
1418 /* Clear alarm before we close the client socket */
1423 /* Try to read OCSP request */
1424 if (getbio != NULL) {
1425 req = d2i_OCSP_REQUEST_bio(getbio, NULL);
1426 BIO_free_all(getbio);
1428 req = d2i_OCSP_REQUEST_bio(cbio, NULL);
1432 log_message(LOG_ERR, "Error parsing OCSP request");
1440 acfd = (int)INVALID_SOCKET;
1446 static int send_ocsp_response(BIO *cbio, OCSP_RESPONSE *resp)
1449 "HTTP/1.0 200 OK\r\nContent-type: application/ocsp-response\r\n"
1450 "Content-Length: %d\r\n\r\n";
1453 BIO_printf(cbio, http_resp, i2d_OCSP_RESPONSE(resp, NULL));
1454 i2d_OCSP_RESPONSE_bio(cbio, resp);
1455 (void)BIO_flush(cbio);
1459 # ifndef OPENSSL_NO_SOCK
1460 static OCSP_RESPONSE *query_responder(BIO *cbio, const char *host,
1462 const STACK_OF(CONF_VALUE) *headers,
1463 OCSP_REQUEST *req, int req_timeout)
1469 OCSP_REQ_CTX *ctx = NULL;
1470 OCSP_RESPONSE *rsp = NULL;
1474 if (req_timeout != -1)
1475 BIO_set_nbio(cbio, 1);
1477 rv = BIO_do_connect(cbio);
1479 if ((rv <= 0) && ((req_timeout == -1) || !BIO_should_retry(cbio))) {
1480 BIO_puts(bio_err, "Error connecting BIO\n");
1484 if (BIO_get_fd(cbio, &fd) < 0) {
1485 BIO_puts(bio_err, "Can't get connection fd\n");
1489 if (req_timeout != -1 && rv <= 0) {
1491 openssl_fdset(fd, &confds);
1493 tv.tv_sec = req_timeout;
1494 rv = select(fd + 1, NULL, (void *)&confds, NULL, &tv);
1496 BIO_puts(bio_err, "Timeout on connect\n");
1501 ctx = OCSP_sendreq_new(cbio, path, NULL, -1);
1505 for (i = 0; i < sk_CONF_VALUE_num(headers); i++) {
1506 CONF_VALUE *hdr = sk_CONF_VALUE_value(headers, i);
1507 if (add_host == 1 && strcasecmp("host", hdr->name) == 0)
1509 if (!OCSP_REQ_CTX_add1_header(ctx, hdr->name, hdr->value))
1513 if (add_host == 1 && OCSP_REQ_CTX_add1_header(ctx, "Host", host) == 0)
1516 if (!OCSP_REQ_CTX_set1_req(ctx, req))
1520 rv = OCSP_sendreq_nbio(&rsp, ctx);
1523 if (req_timeout == -1)
1526 openssl_fdset(fd, &confds);
1528 tv.tv_sec = req_timeout;
1529 if (BIO_should_read(cbio)) {
1530 rv = select(fd + 1, (void *)&confds, NULL, NULL, &tv);
1531 } else if (BIO_should_write(cbio)) {
1532 rv = select(fd + 1, NULL, (void *)&confds, NULL, &tv);
1534 BIO_puts(bio_err, "Unexpected retry condition\n");
1538 BIO_puts(bio_err, "Timeout on request\n");
1542 BIO_puts(bio_err, "Select error\n");
1548 OCSP_REQ_CTX_free(ctx);
1553 OCSP_RESPONSE *process_responder(OCSP_REQUEST *req,
1554 const char *host, const char *path,
1555 const char *port, int use_ssl,
1556 STACK_OF(CONF_VALUE) *headers,
1560 SSL_CTX *ctx = NULL;
1561 OCSP_RESPONSE *resp = NULL;
1563 cbio = BIO_new_connect(host);
1565 BIO_printf(bio_err, "Error creating connect BIO\n");
1569 BIO_set_conn_port(cbio, port);
1572 ctx = SSL_CTX_new(TLS_client_method());
1574 BIO_printf(bio_err, "Error creating SSL context.\n");
1577 SSL_CTX_set_mode(ctx, SSL_MODE_AUTO_RETRY);
1578 sbio = BIO_new_ssl(ctx, 1);
1579 cbio = BIO_push(sbio, cbio);
1582 resp = query_responder(cbio, host, path, headers, req, req_timeout);
1584 BIO_printf(bio_err, "Error querying OCSP responder\n");