1 /*
2 * Copyright 2001-2020 The OpenSSL Project Authors. All Rights Reserved.
3 *
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
8 */
9
10 #include <openssl/opensslconf.h>
11
12 #ifdef OPENSSL_SYS_VMS
13 # define _XOPEN_SOURCE_EXTENDED/* So fd_set and friends get properly defined
14 * on OpenVMS */
15 #endif
16
17 #include <stdio.h>
18 #include <stdlib.h>
19 #include <string.h>
20 #include <time.h>
21 #include <ctype.h>
22
23 /* Needs to be included before the openssl headers */
24 #include "apps.h"
25 #include "progs.h"
26 #include "internal/sockets.h"
27 #include <openssl/e_os2.h>
28 #include <openssl/crypto.h>
29 #include <openssl/err.h>
30 #include <openssl/ssl.h>
31 #include <openssl/evp.h>
32 #include <openssl/bn.h>
33 #include <openssl/x509v3.h>
34 #include <openssl/rand.h>
35
36 #ifndef HAVE_FORK
37 #if defined(OPENSSL_SYS_VMS) || defined(OPENSSL_SYS_WINDOWS)
38 # define HAVE_FORK 0
39 #else
40 # define HAVE_FORK 1
41 #endif
42 #endif
43
44 #if HAVE_FORK
45 #undef NO_FORK
46 #else
47 #define NO_FORK
48 #endif
49
50 #if !defined(NO_FORK) && !defined(OPENSSL_NO_SOCK) \
51 && !defined(OPENSSL_NO_POSIX_IO)
52 # define OCSP_DAEMON
53 # include <sys/types.h>
54 # include <sys/wait.h>
55 # include <syslog.h>
56 # include <signal.h>
57 # define MAXERRLEN 1000 /* limit error text sent to syslog to 1000 bytes */
58 #else
59 # undef LOG_INFO
60 # undef LOG_WARNING
61 # undef LOG_ERR
62 # define LOG_INFO 0
63 # define LOG_WARNING 1
64 # define LOG_ERR 2
65 #endif
66
67 #if defined(OPENSSL_SYS_VXWORKS)
68 /* not supported */
setpgid(pid_t pid,pid_t pgid)69 int setpgid(pid_t pid, pid_t pgid)
70 {
71 errno = ENOSYS;
72 return 0;
73 }
74 /* not supported */
fork(void)75 pid_t fork(void)
76 {
77 errno = ENOSYS;
78 return (pid_t) -1;
79 }
80 #endif
81 /* Maximum leeway in validity period: default 5 minutes */
82 #define MAX_VALIDITY_PERIOD (5 * 60)
83
84 static int add_ocsp_cert(OCSP_REQUEST **req, X509 *cert,
85 const EVP_MD *cert_id_md, X509 *issuer,
86 STACK_OF(OCSP_CERTID) *ids);
87 static int add_ocsp_serial(OCSP_REQUEST **req, char *serial,
88 const EVP_MD *cert_id_md, X509 *issuer,
89 STACK_OF(OCSP_CERTID) *ids);
90 static void print_ocsp_summary(BIO *out, OCSP_BASICRESP *bs, OCSP_REQUEST *req,
91 STACK_OF(OPENSSL_STRING) *names,
92 STACK_OF(OCSP_CERTID) *ids, long nsec,
93 long maxage);
94 static void make_ocsp_response(BIO *err, OCSP_RESPONSE **resp, OCSP_REQUEST *req,
95 CA_DB *db, STACK_OF(X509) *ca, X509 *rcert,
96 EVP_PKEY *rkey, const EVP_MD *md,
97 STACK_OF(OPENSSL_STRING) *sigopts,
98 STACK_OF(X509) *rother, unsigned long flags,
99 int nmin, int ndays, int badsig);
100
101 static char **lookup_serial(CA_DB *db, ASN1_INTEGER *ser);
102 static BIO *init_responder(const char *port);
103 static int do_responder(OCSP_REQUEST **preq, BIO **pcbio, BIO *acbio, int timeout);
104 static int send_ocsp_response(BIO *cbio, OCSP_RESPONSE *resp);
105 static void log_message(int level, const char *fmt, ...);
106 static char *prog;
107 static int multi = 0;
108
109 #ifdef OCSP_DAEMON
110 static int acfd = (int) INVALID_SOCKET;
111 static int index_changed(CA_DB *);
112 static void spawn_loop(void);
113 static int print_syslog(const char *str, size_t len, void *levPtr);
114 static void socket_timeout(int signum);
115 #endif
116
117 #ifndef OPENSSL_NO_SOCK
118 static OCSP_RESPONSE *query_responder(BIO *cbio, const char *host,
119 const char *path,
120 const STACK_OF(CONF_VALUE) *headers,
121 OCSP_REQUEST *req, int req_timeout);
122 #endif
123
124 typedef enum OPTION_choice {
125 OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
126 OPT_OUTFILE, OPT_TIMEOUT, OPT_URL, OPT_HOST, OPT_PORT,
127 OPT_IGNORE_ERR, OPT_NOVERIFY, OPT_NONCE, OPT_NO_NONCE,
128 OPT_RESP_NO_CERTS, OPT_RESP_KEY_ID, OPT_NO_CERTS,
129 OPT_NO_SIGNATURE_VERIFY, OPT_NO_CERT_VERIFY, OPT_NO_CHAIN,
130 OPT_NO_CERT_CHECKS, OPT_NO_EXPLICIT, OPT_TRUST_OTHER,
131 OPT_NO_INTERN, OPT_BADSIG, OPT_TEXT, OPT_REQ_TEXT, OPT_RESP_TEXT,
132 OPT_REQIN, OPT_RESPIN, OPT_SIGNER, OPT_VAFILE, OPT_SIGN_OTHER,
133 OPT_VERIFY_OTHER, OPT_CAFILE, OPT_CAPATH, OPT_NOCAFILE, OPT_NOCAPATH,
134 OPT_VALIDITY_PERIOD, OPT_STATUS_AGE, OPT_SIGNKEY, OPT_REQOUT,
135 OPT_RESPOUT, OPT_PATH, OPT_ISSUER, OPT_CERT, OPT_SERIAL,
136 OPT_INDEX, OPT_CA, OPT_NMIN, OPT_REQUEST, OPT_NDAYS, OPT_RSIGNER,
137 OPT_RKEY, OPT_ROTHER, OPT_RMD, OPT_RSIGOPT, OPT_HEADER,
138 OPT_V_ENUM,
139 OPT_MD,
140 OPT_MULTI
141 } OPTION_CHOICE;
142
143 const OPTIONS ocsp_options[] = {
144 {"help", OPT_HELP, '-', "Display this summary"},
145 {"out", OPT_OUTFILE, '>', "Output filename"},
146 {"timeout", OPT_TIMEOUT, 'p',
147 "Connection timeout (in seconds) to the OCSP responder"},
148 {"url", OPT_URL, 's', "Responder URL"},
149 {"host", OPT_HOST, 's', "TCP/IP hostname:port to connect to"},
150 {"port", OPT_PORT, 'p', "Port to run responder on"},
151 {"ignore_err", OPT_IGNORE_ERR, '-',
152 "Ignore error on OCSP request or response and continue running"},
153 {"noverify", OPT_NOVERIFY, '-', "Don't verify response at all"},
154 {"nonce", OPT_NONCE, '-', "Add OCSP nonce to request"},
155 {"no_nonce", OPT_NO_NONCE, '-', "Don't add OCSP nonce to request"},
156 {"resp_no_certs", OPT_RESP_NO_CERTS, '-',
157 "Don't include any certificates in response"},
158 {"resp_key_id", OPT_RESP_KEY_ID, '-',
159 "Identify response by signing certificate key ID"},
160 #ifdef OCSP_DAEMON
161 {"multi", OPT_MULTI, 'p', "run multiple responder processes"},
162 #endif
163 {"no_certs", OPT_NO_CERTS, '-',
164 "Don't include any certificates in signed request"},
165 {"no_signature_verify", OPT_NO_SIGNATURE_VERIFY, '-',
166 "Don't check signature on response"},
167 {"no_cert_verify", OPT_NO_CERT_VERIFY, '-',
168 "Don't check signing certificate"},
169 {"no_chain", OPT_NO_CHAIN, '-', "Don't chain verify response"},
170 {"no_cert_checks", OPT_NO_CERT_CHECKS, '-',
171 "Don't do additional checks on signing certificate"},
172 {"no_explicit", OPT_NO_EXPLICIT, '-',
173 "Do not explicitly check the chain, just verify the root"},
174 {"trust_other", OPT_TRUST_OTHER, '-',
175 "Don't verify additional certificates"},
176 {"no_intern", OPT_NO_INTERN, '-',
177 "Don't search certificates contained in response for signer"},
178 {"badsig", OPT_BADSIG, '-',
179 "Corrupt last byte of loaded OSCP response signature (for test)"},
180 {"text", OPT_TEXT, '-', "Print text form of request and response"},
181 {"req_text", OPT_REQ_TEXT, '-', "Print text form of request"},
182 {"resp_text", OPT_RESP_TEXT, '-', "Print text form of response"},
183 {"reqin", OPT_REQIN, 's', "File with the DER-encoded request"},
184 {"respin", OPT_RESPIN, 's', "File with the DER-encoded response"},
185 {"signer", OPT_SIGNER, '<', "Certificate to sign OCSP request with"},
186 {"VAfile", OPT_VAFILE, '<', "Validator certificates file"},
187 {"sign_other", OPT_SIGN_OTHER, '<',
188 "Additional certificates to include in signed request"},
189 {"verify_other", OPT_VERIFY_OTHER, '<',
190 "Additional certificates to search for signer"},
191 {"CAfile", OPT_CAFILE, '<', "Trusted certificates file"},
192 {"CApath", OPT_CAPATH, '<', "Trusted certificates directory"},
193 {"no-CAfile", OPT_NOCAFILE, '-',
194 "Do not load the default certificates file"},
195 {"no-CApath", OPT_NOCAPATH, '-',
196 "Do not load certificates from the default certificates directory"},
197 {"validity_period", OPT_VALIDITY_PERIOD, 'u',
198 "Maximum validity discrepancy in seconds"},
199 {"status_age", OPT_STATUS_AGE, 'p', "Maximum status age in seconds"},
200 {"signkey", OPT_SIGNKEY, 's', "Private key to sign OCSP request with"},
201 {"reqout", OPT_REQOUT, 's', "Output file for the DER-encoded request"},
202 {"respout", OPT_RESPOUT, 's', "Output file for the DER-encoded response"},
203 {"path", OPT_PATH, 's', "Path to use in OCSP request"},
204 {"issuer", OPT_ISSUER, '<', "Issuer certificate"},
205 {"cert", OPT_CERT, '<', "Certificate to check"},
206 {"serial", OPT_SERIAL, 's', "Serial number to check"},
207 {"index", OPT_INDEX, '<', "Certificate status index file"},
208 {"CA", OPT_CA, '<', "CA certificate"},
209 {"nmin", OPT_NMIN, 'p', "Number of minutes before next update"},
210 {"nrequest", OPT_REQUEST, 'p',
211 "Number of requests to accept (default unlimited)"},
212 {"ndays", OPT_NDAYS, 'p', "Number of days before next update"},
213 {"rsigner", OPT_RSIGNER, '<',
214 "Responder certificate to sign responses with"},
215 {"rkey", OPT_RKEY, '<', "Responder key to sign responses with"},
216 {"rother", OPT_ROTHER, '<', "Other certificates to include in response"},
217 {"rmd", OPT_RMD, 's', "Digest Algorithm to use in signature of OCSP response"},
218 {"rsigopt", OPT_RSIGOPT, 's', "OCSP response signature parameter in n:v form"},
219 {"header", OPT_HEADER, 's', "key=value header to add"},
220 {"", OPT_MD, '-', "Any supported digest algorithm (sha1,sha256, ... )"},
221 OPT_V_OPTIONS,
222 {NULL}
223 };
224
ocsp_main(int argc,char ** argv)225 int ocsp_main(int argc, char **argv)
226 {
227 BIO *acbio = NULL, *cbio = NULL, *derbio = NULL, *out = NULL;
228 const EVP_MD *cert_id_md = NULL, *rsign_md = NULL;
229 STACK_OF(OPENSSL_STRING) *rsign_sigopts = NULL;
230 int trailing_md = 0;
231 CA_DB *rdb = NULL;
232 EVP_PKEY *key = NULL, *rkey = NULL;
233 OCSP_BASICRESP *bs = NULL;
234 OCSP_REQUEST *req = NULL;
235 OCSP_RESPONSE *resp = NULL;
236 STACK_OF(CONF_VALUE) *headers = NULL;
237 STACK_OF(OCSP_CERTID) *ids = NULL;
238 STACK_OF(OPENSSL_STRING) *reqnames = NULL;
239 STACK_OF(X509) *sign_other = NULL, *verify_other = NULL, *rother = NULL;
240 STACK_OF(X509) *issuers = NULL;
241 X509 *issuer = NULL, *cert = NULL;
242 STACK_OF(X509) *rca_cert = NULL;
243 X509 *signer = NULL, *rsigner = NULL;
244 X509_STORE *store = NULL;
245 X509_VERIFY_PARAM *vpm = NULL;
246 const char *CAfile = NULL, *CApath = NULL;
247 char *header, *value;
248 char *host = NULL, *port = NULL, *path = "/", *outfile = NULL;
249 char *rca_filename = NULL, *reqin = NULL, *respin = NULL;
250 char *reqout = NULL, *respout = NULL, *ridx_filename = NULL;
251 char *rsignfile = NULL, *rkeyfile = NULL;
252 char *sign_certfile = NULL, *verify_certfile = NULL, *rcertfile = NULL;
253 char *signfile = NULL, *keyfile = NULL;
254 char *thost = NULL, *tport = NULL, *tpath = NULL;
255 int noCAfile = 0, noCApath = 0;
256 int accept_count = -1, add_nonce = 1, noverify = 0, use_ssl = -1;
257 int vpmtouched = 0, badsig = 0, i, ignore_err = 0, nmin = 0, ndays = -1;
258 int req_text = 0, resp_text = 0, ret = 1;
259 int req_timeout = -1;
260 long nsec = MAX_VALIDITY_PERIOD, maxage = -1;
261 unsigned long sign_flags = 0, verify_flags = 0, rflags = 0;
262 OPTION_CHOICE o;
263
264 reqnames = sk_OPENSSL_STRING_new_null();
265 if (reqnames == NULL)
266 goto end;
267 ids = sk_OCSP_CERTID_new_null();
268 if (ids == NULL)
269 goto end;
270 if ((vpm = X509_VERIFY_PARAM_new()) == NULL)
271 return 1;
272
273 prog = opt_init(argc, argv, ocsp_options);
274 while ((o = opt_next()) != OPT_EOF) {
275 switch (o) {
276 case OPT_EOF:
277 case OPT_ERR:
278 opthelp:
279 BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
280 goto end;
281 case OPT_HELP:
282 ret = 0;
283 opt_help(ocsp_options);
284 goto end;
285 case OPT_OUTFILE:
286 outfile = opt_arg();
287 break;
288 case OPT_TIMEOUT:
289 #ifndef OPENSSL_NO_SOCK
290 req_timeout = atoi(opt_arg());
291 #endif
292 break;
293 case OPT_URL:
294 OPENSSL_free(thost);
295 OPENSSL_free(tport);
296 OPENSSL_free(tpath);
297 thost = tport = tpath = NULL;
298 if (!OCSP_parse_url(opt_arg(), &host, &port, &path, &use_ssl)) {
299 BIO_printf(bio_err, "%s Error parsing URL\n", prog);
300 goto end;
301 }
302 thost = host;
303 tport = port;
304 tpath = path;
305 break;
306 case OPT_HOST:
307 host = opt_arg();
308 break;
309 case OPT_PORT:
310 port = opt_arg();
311 break;
312 case OPT_IGNORE_ERR:
313 ignore_err = 1;
314 break;
315 case OPT_NOVERIFY:
316 noverify = 1;
317 break;
318 case OPT_NONCE:
319 add_nonce = 2;
320 break;
321 case OPT_NO_NONCE:
322 add_nonce = 0;
323 break;
324 case OPT_RESP_NO_CERTS:
325 rflags |= OCSP_NOCERTS;
326 break;
327 case OPT_RESP_KEY_ID:
328 rflags |= OCSP_RESPID_KEY;
329 break;
330 case OPT_NO_CERTS:
331 sign_flags |= OCSP_NOCERTS;
332 break;
333 case OPT_NO_SIGNATURE_VERIFY:
334 verify_flags |= OCSP_NOSIGS;
335 break;
336 case OPT_NO_CERT_VERIFY:
337 verify_flags |= OCSP_NOVERIFY;
338 break;
339 case OPT_NO_CHAIN:
340 verify_flags |= OCSP_NOCHAIN;
341 break;
342 case OPT_NO_CERT_CHECKS:
343 verify_flags |= OCSP_NOCHECKS;
344 break;
345 case OPT_NO_EXPLICIT:
346 verify_flags |= OCSP_NOEXPLICIT;
347 break;
348 case OPT_TRUST_OTHER:
349 verify_flags |= OCSP_TRUSTOTHER;
350 break;
351 case OPT_NO_INTERN:
352 verify_flags |= OCSP_NOINTERN;
353 break;
354 case OPT_BADSIG:
355 badsig = 1;
356 break;
357 case OPT_TEXT:
358 req_text = resp_text = 1;
359 break;
360 case OPT_REQ_TEXT:
361 req_text = 1;
362 break;
363 case OPT_RESP_TEXT:
364 resp_text = 1;
365 break;
366 case OPT_REQIN:
367 reqin = opt_arg();
368 break;
369 case OPT_RESPIN:
370 respin = opt_arg();
371 break;
372 case OPT_SIGNER:
373 signfile = opt_arg();
374 break;
375 case OPT_VAFILE:
376 verify_certfile = opt_arg();
377 verify_flags |= OCSP_TRUSTOTHER;
378 break;
379 case OPT_SIGN_OTHER:
380 sign_certfile = opt_arg();
381 break;
382 case OPT_VERIFY_OTHER:
383 verify_certfile = opt_arg();
384 break;
385 case OPT_CAFILE:
386 CAfile = opt_arg();
387 break;
388 case OPT_CAPATH:
389 CApath = opt_arg();
390 break;
391 case OPT_NOCAFILE:
392 noCAfile = 1;
393 break;
394 case OPT_NOCAPATH:
395 noCApath = 1;
396 break;
397 case OPT_V_CASES:
398 if (!opt_verify(o, vpm))
399 goto end;
400 vpmtouched++;
401 break;
402 case OPT_VALIDITY_PERIOD:
403 opt_long(opt_arg(), &nsec);
404 break;
405 case OPT_STATUS_AGE:
406 opt_long(opt_arg(), &maxage);
407 break;
408 case OPT_SIGNKEY:
409 keyfile = opt_arg();
410 break;
411 case OPT_REQOUT:
412 reqout = opt_arg();
413 break;
414 case OPT_RESPOUT:
415 respout = opt_arg();
416 break;
417 case OPT_PATH:
418 path = opt_arg();
419 break;
420 case OPT_ISSUER:
421 issuer = load_cert(opt_arg(), FORMAT_PEM, "issuer certificate");
422 if (issuer == NULL)
423 goto end;
424 if (issuers == NULL) {
425 if ((issuers = sk_X509_new_null()) == NULL)
426 goto end;
427 }
428 sk_X509_push(issuers, issuer);
429 break;
430 case OPT_CERT:
431 X509_free(cert);
432 cert = load_cert(opt_arg(), FORMAT_PEM, "certificate");
433 if (cert == NULL)
434 goto end;
435 if (cert_id_md == NULL)
436 cert_id_md = EVP_sha1();
437 if (!add_ocsp_cert(&req, cert, cert_id_md, issuer, ids))
438 goto end;
439 if (!sk_OPENSSL_STRING_push(reqnames, opt_arg()))
440 goto end;
441 trailing_md = 0;
442 break;
443 case OPT_SERIAL:
444 if (cert_id_md == NULL)
445 cert_id_md = EVP_sha1();
446 if (!add_ocsp_serial(&req, opt_arg(), cert_id_md, issuer, ids))
447 goto end;
448 if (!sk_OPENSSL_STRING_push(reqnames, opt_arg()))
449 goto end;
450 trailing_md = 0;
451 break;
452 case OPT_INDEX:
453 ridx_filename = opt_arg();
454 break;
455 case OPT_CA:
456 rca_filename = opt_arg();
457 break;
458 case OPT_NMIN:
459 opt_int(opt_arg(), &nmin);
460 if (ndays == -1)
461 ndays = 0;
462 break;
463 case OPT_REQUEST:
464 opt_int(opt_arg(), &accept_count);
465 break;
466 case OPT_NDAYS:
467 ndays = atoi(opt_arg());
468 break;
469 case OPT_RSIGNER:
470 rsignfile = opt_arg();
471 break;
472 case OPT_RKEY:
473 rkeyfile = opt_arg();
474 break;
475 case OPT_ROTHER:
476 rcertfile = opt_arg();
477 break;
478 case OPT_RMD: /* Response MessageDigest */
479 if (!opt_md(opt_arg(), &rsign_md))
480 goto end;
481 break;
482 case OPT_RSIGOPT:
483 if (rsign_sigopts == NULL)
484 rsign_sigopts = sk_OPENSSL_STRING_new_null();
485 if (rsign_sigopts == NULL || !sk_OPENSSL_STRING_push(rsign_sigopts, opt_arg()))
486 goto end;
487 break;
488 case OPT_HEADER:
489 header = opt_arg();
490 value = strchr(header, '=');
491 if (value == NULL) {
492 BIO_printf(bio_err, "Missing = in header key=value\n");
493 goto opthelp;
494 }
495 *value++ = '\0';
496 if (!X509V3_add_value(header, value, &headers))
497 goto end;
498 break;
499 case OPT_MD:
500 if (trailing_md) {
501 BIO_printf(bio_err,
502 "%s: Digest must be before -cert or -serial\n",
503 prog);
504 goto opthelp;
505 }
506 if (!opt_md(opt_unknown(), &cert_id_md))
507 goto opthelp;
508 trailing_md = 1;
509 break;
510 case OPT_MULTI:
511 #ifdef OCSP_DAEMON
512 multi = atoi(opt_arg());
513 #endif
514 break;
515 }
516 }
517 if (trailing_md) {
518 BIO_printf(bio_err, "%s: Digest must be before -cert or -serial\n",
519 prog);
520 goto opthelp;
521 }
522 argc = opt_num_rest();
523 if (argc != 0)
524 goto opthelp;
525
526 /* Have we anything to do? */
527 if (req == NULL && reqin == NULL
528 && respin == NULL && !(port != NULL && ridx_filename != NULL))
529 goto opthelp;
530
531 out = bio_open_default(outfile, 'w', FORMAT_TEXT);
532 if (out == NULL)
533 goto end;
534
535 if (req == NULL && (add_nonce != 2))
536 add_nonce = 0;
537
538 if (req == NULL && reqin != NULL) {
539 derbio = bio_open_default(reqin, 'r', FORMAT_ASN1);
540 if (derbio == NULL)
541 goto end;
542 req = d2i_OCSP_REQUEST_bio(derbio, NULL);
543 BIO_free(derbio);
544 if (req == NULL) {
545 BIO_printf(bio_err, "Error reading OCSP request\n");
546 goto end;
547 }
548 }
549
550 if (req == NULL && port != NULL) {
551 acbio = init_responder(port);
552 if (acbio == NULL)
553 goto end;
554 }
555
556 if (rsignfile != NULL) {
557 if (rkeyfile == NULL)
558 rkeyfile = rsignfile;
559 rsigner = load_cert(rsignfile, FORMAT_PEM, "responder certificate");
560 if (rsigner == NULL) {
561 BIO_printf(bio_err, "Error loading responder certificate\n");
562 goto end;
563 }
564 if (!load_certs(rca_filename, &rca_cert, FORMAT_PEM,
565 NULL, "CA certificate"))
566 goto end;
567 if (rcertfile != NULL) {
568 if (!load_certs(rcertfile, &rother, FORMAT_PEM, NULL,
569 "responder other certificates"))
570 goto end;
571 }
572 rkey = load_key(rkeyfile, FORMAT_PEM, 0, NULL, NULL,
573 "responder private key");
574 if (rkey == NULL)
575 goto end;
576 }
577
578 if (ridx_filename != NULL
579 && (rkey == NULL || rsigner == NULL || rca_cert == NULL)) {
580 BIO_printf(bio_err,
581 "Responder mode requires certificate, key, and CA.\n");
582 goto end;
583 }
584
585 if (ridx_filename != NULL) {
586 rdb = load_index(ridx_filename, NULL);
587 if (rdb == NULL || index_index(rdb) <= 0) {
588 ret = 1;
589 goto end;
590 }
591 }
592
593 #ifdef OCSP_DAEMON
594 if (multi && acbio != NULL)
595 spawn_loop();
596 if (acbio != NULL && req_timeout > 0)
597 signal(SIGALRM, socket_timeout);
598 #endif
599
600 if (acbio != NULL)
601 log_message(LOG_INFO, "waiting for OCSP client connections...");
602
603 redo_accept:
604
605 if (acbio != NULL) {
606 #ifdef OCSP_DAEMON
607 if (index_changed(rdb)) {
608 CA_DB *newrdb = load_index(ridx_filename, NULL);
609
610 if (newrdb != NULL && index_index(newrdb) > 0) {
611 free_index(rdb);
612 rdb = newrdb;
613 } else {
614 free_index(newrdb);
615 log_message(LOG_ERR, "error reloading updated index: %s",
616 ridx_filename);
617 }
618 }
619 #endif
620
621 req = NULL;
622 if (!do_responder(&req, &cbio, acbio, req_timeout))
623 goto redo_accept;
624
625 if (req == NULL) {
626 resp =
627 OCSP_response_create(OCSP_RESPONSE_STATUS_MALFORMEDREQUEST,
628 NULL);
629 send_ocsp_response(cbio, resp);
630 goto done_resp;
631 }
632 }
633
634 if (req == NULL
635 && (signfile != NULL || reqout != NULL
636 || host != NULL || add_nonce || ridx_filename != NULL)) {
637 BIO_printf(bio_err, "Need an OCSP request for this operation!\n");
638 goto end;
639 }
640
641 if (req != NULL && add_nonce) {
642 if (!OCSP_request_add1_nonce(req, NULL, -1))
643 goto end;
644 }
645
646 if (signfile != NULL) {
647 if (keyfile == NULL)
648 keyfile = signfile;
649 signer = load_cert(signfile, FORMAT_PEM, "signer certificate");
650 if (signer == NULL) {
651 BIO_printf(bio_err, "Error loading signer certificate\n");
652 goto end;
653 }
654 if (sign_certfile != NULL) {
655 if (!load_certs(sign_certfile, &sign_other, FORMAT_PEM, NULL,
656 "signer certificates"))
657 goto end;
658 }
659 key = load_key(keyfile, FORMAT_PEM, 0, NULL, NULL,
660 "signer private key");
661 if (key == NULL)
662 goto end;
663
664 if (!OCSP_request_sign
665 (req, signer, key, NULL, sign_other, sign_flags)) {
666 BIO_printf(bio_err, "Error signing OCSP request\n");
667 goto end;
668 }
669 }
670
671 if (req_text && req != NULL)
672 OCSP_REQUEST_print(out, req, 0);
673
674 if (reqout != NULL) {
675 derbio = bio_open_default(reqout, 'w', FORMAT_ASN1);
676 if (derbio == NULL)
677 goto end;
678 i2d_OCSP_REQUEST_bio(derbio, req);
679 BIO_free(derbio);
680 }
681
682 if (rdb != NULL) {
683 make_ocsp_response(bio_err, &resp, req, rdb, rca_cert, rsigner, rkey,
684 rsign_md, rsign_sigopts, rother, rflags, nmin, ndays, badsig);
685 if (cbio != NULL)
686 send_ocsp_response(cbio, resp);
687 } else if (host != NULL) {
688 #ifndef OPENSSL_NO_SOCK
689 resp = process_responder(req, host, path,
690 port, use_ssl, headers, req_timeout);
691 if (resp == NULL)
692 goto end;
693 #else
694 BIO_printf(bio_err,
695 "Error creating connect BIO - sockets not supported.\n");
696 goto end;
697 #endif
698 } else if (respin != NULL) {
699 derbio = bio_open_default(respin, 'r', FORMAT_ASN1);
700 if (derbio == NULL)
701 goto end;
702 resp = d2i_OCSP_RESPONSE_bio(derbio, NULL);
703 BIO_free(derbio);
704 if (resp == NULL) {
705 BIO_printf(bio_err, "Error reading OCSP response\n");
706 goto end;
707 }
708 } else {
709 ret = 0;
710 goto end;
711 }
712
713 done_resp:
714
715 if (respout != NULL) {
716 derbio = bio_open_default(respout, 'w', FORMAT_ASN1);
717 if (derbio == NULL)
718 goto end;
719 i2d_OCSP_RESPONSE_bio(derbio, resp);
720 BIO_free(derbio);
721 }
722
723 i = OCSP_response_status(resp);
724 if (i != OCSP_RESPONSE_STATUS_SUCCESSFUL) {
725 BIO_printf(out, "Responder Error: %s (%d)\n",
726 OCSP_response_status_str(i), i);
727 if (!ignore_err)
728 goto end;
729 }
730
731 if (resp_text)
732 OCSP_RESPONSE_print(out, resp, 0);
733
734 /* If running as responder don't verify our own response */
735 if (cbio != NULL) {
736 /* If not unlimited, see if we took all we should. */
737 if (accept_count != -1 && --accept_count <= 0) {
738 ret = 0;
739 goto end;
740 }
741 BIO_free_all(cbio);
742 cbio = NULL;
743 OCSP_REQUEST_free(req);
744 req = NULL;
745 OCSP_RESPONSE_free(resp);
746 resp = NULL;
747 goto redo_accept;
748 }
749 if (ridx_filename != NULL) {
750 ret = 0;
751 goto end;
752 }
753
754 if (store == NULL) {
755 store = setup_verify(CAfile, CApath, noCAfile, noCApath);
756 if (!store)
757 goto end;
758 }
759 if (vpmtouched)
760 X509_STORE_set1_param(store, vpm);
761 if (verify_certfile != NULL) {
762 if (!load_certs(verify_certfile, &verify_other, FORMAT_PEM, NULL,
763 "validator certificate"))
764 goto end;
765 }
766
767 bs = OCSP_response_get1_basic(resp);
768 if (bs == NULL) {
769 BIO_printf(bio_err, "Error parsing response\n");
770 goto end;
771 }
772
773 ret = 0;
774
775 if (!noverify) {
776 if (req != NULL && ((i = OCSP_check_nonce(req, bs)) <= 0)) {
777 if (i == -1)
778 BIO_printf(bio_err, "WARNING: no nonce in response\n");
779 else {
780 BIO_printf(bio_err, "Nonce Verify error\n");
781 ret = 1;
782 goto end;
783 }
784 }
785
786 i = OCSP_basic_verify(bs, verify_other, store, verify_flags);
787 if (i <= 0 && issuers) {
788 i = OCSP_basic_verify(bs, issuers, store, OCSP_TRUSTOTHER);
789 if (i > 0)
790 ERR_clear_error();
791 }
792 if (i <= 0) {
793 BIO_printf(bio_err, "Response Verify Failure\n");
794 ERR_print_errors(bio_err);
795 ret = 1;
796 } else {
797 BIO_printf(bio_err, "Response verify OK\n");
798 }
799 }
800
801 print_ocsp_summary(out, bs, req, reqnames, ids, nsec, maxage);
802
803 end:
804 ERR_print_errors(bio_err);
805 X509_free(signer);
806 X509_STORE_free(store);
807 X509_VERIFY_PARAM_free(vpm);
808 sk_OPENSSL_STRING_free(rsign_sigopts);
809 EVP_PKEY_free(key);
810 EVP_PKEY_free(rkey);
811 X509_free(cert);
812 sk_X509_pop_free(issuers, X509_free);
813 X509_free(rsigner);
814 sk_X509_pop_free(rca_cert, X509_free);
815 free_index(rdb);
816 BIO_free_all(cbio);
817 BIO_free_all(acbio);
818 BIO_free_all(out);
819 OCSP_REQUEST_free(req);
820 OCSP_RESPONSE_free(resp);
821 OCSP_BASICRESP_free(bs);
822 sk_OPENSSL_STRING_free(reqnames);
823 sk_OCSP_CERTID_free(ids);
824 sk_X509_pop_free(sign_other, X509_free);
825 sk_X509_pop_free(verify_other, X509_free);
826 sk_CONF_VALUE_pop_free(headers, X509V3_conf_free);
827 OPENSSL_free(thost);
828 OPENSSL_free(tport);
829 OPENSSL_free(tpath);
830
831 return ret;
832 }
833
834 static void
log_message(int level,const char * fmt,...)835 log_message(int level, const char *fmt, ...)
836 {
837 va_list ap;
838
839 va_start(ap, fmt);
840 #ifdef OCSP_DAEMON
841 if (multi) {
842 char buf[1024];
843 if (vsnprintf(buf, sizeof(buf), fmt, ap) > 0) {
844 syslog(level, "%s", buf);
845 }
846 if (level >= LOG_ERR)
847 ERR_print_errors_cb(print_syslog, &level);
848 }
849 #endif
850 if (!multi) {
851 BIO_printf(bio_err, "%s: ", prog);
852 BIO_vprintf(bio_err, fmt, ap);
853 BIO_printf(bio_err, "\n");
854 }
855 va_end(ap);
856 }
857
858 #ifdef OCSP_DAEMON
859
print_syslog(const char * str,size_t len,void * levPtr)860 static int print_syslog(const char *str, size_t len, void *levPtr)
861 {
862 int level = *(int *)levPtr;
863 int ilen = (len > MAXERRLEN) ? MAXERRLEN : len;
864
865 syslog(level, "%.*s", ilen, str);
866
867 return ilen;
868 }
869
index_changed(CA_DB * rdb)870 static int index_changed(CA_DB *rdb)
871 {
872 struct stat sb;
873
874 if (rdb != NULL && stat(rdb->dbfname, &sb) != -1) {
875 if (rdb->dbst.st_mtime != sb.st_mtime
876 || rdb->dbst.st_ctime != sb.st_ctime
877 || rdb->dbst.st_ino != sb.st_ino
878 || rdb->dbst.st_dev != sb.st_dev) {
879 syslog(LOG_INFO, "index file changed, reloading");
880 return 1;
881 }
882 }
883 return 0;
884 }
885
killall(int ret,pid_t * kidpids)886 static void killall(int ret, pid_t *kidpids)
887 {
888 int i;
889
890 for (i = 0; i < multi; ++i)
891 if (kidpids[i] != 0)
892 (void)kill(kidpids[i], SIGTERM);
893 OPENSSL_free(kidpids);
894 sleep(1);
895 exit(ret);
896 }
897
898 static int termsig = 0;
899
noteterm(int sig)900 static void noteterm (int sig)
901 {
902 termsig = sig;
903 }
904
905 /*
906 * Loop spawning up to `multi` child processes, only child processes return
907 * from this function. The parent process loops until receiving a termination
908 * signal, kills extant children and exits without returning.
909 */
spawn_loop(void)910 static void spawn_loop(void)
911 {
912 pid_t *kidpids = NULL;
913 int status;
914 int procs = 0;
915 int i;
916
917 openlog(prog, LOG_PID, LOG_DAEMON);
918
919 if (setpgid(0, 0)) {
920 syslog(LOG_ERR, "fatal: error detaching from parent process group: %s",
921 strerror(errno));
922 exit(1);
923 }
924 kidpids = app_malloc(multi * sizeof(*kidpids), "child PID array");
925 for (i = 0; i < multi; ++i)
926 kidpids[i] = 0;
927
928 signal(SIGINT, noteterm);
929 signal(SIGTERM, noteterm);
930
931 while (termsig == 0) {
932 pid_t fpid;
933
934 /*
935 * Wait for a child to replace when we're at the limit.
936 * Slow down if a child exited abnormally or waitpid() < 0
937 */
938 while (termsig == 0 && procs >= multi) {
939 if ((fpid = waitpid(-1, &status, 0)) > 0) {
940 for (i = 0; i < procs; ++i) {
941 if (kidpids[i] == fpid) {
942 kidpids[i] = 0;
943 --procs;
944 break;
945 }
946 }
947 if (i >= multi) {
948 syslog(LOG_ERR, "fatal: internal error: "
949 "no matching child slot for pid: %ld",
950 (long) fpid);
951 killall(1, kidpids);
952 }
953 if (status != 0) {
954 if (WIFEXITED(status))
955 syslog(LOG_WARNING, "child process: %ld, exit status: %d",
956 (long)fpid, WEXITSTATUS(status));
957 else if (WIFSIGNALED(status))
958 syslog(LOG_WARNING, "child process: %ld, term signal %d%s",
959 (long)fpid, WTERMSIG(status),
960 #ifdef WCOREDUMP
961 WCOREDUMP(status) ? " (core dumped)" :
962 #endif
963 "");
964 sleep(1);
965 }
966 break;
967 } else if (errno != EINTR) {
968 syslog(LOG_ERR, "fatal: waitpid(): %s", strerror(errno));
969 killall(1, kidpids);
970 }
971 }
972 if (termsig)
973 break;
974
975 switch(fpid = fork()) {
976 case -1: /* error */
977 /* System critically low on memory, pause and try again later */
978 sleep(30);
979 break;
980 case 0: /* child */
981 OPENSSL_free(kidpids);
982 signal(SIGINT, SIG_DFL);
983 signal(SIGTERM, SIG_DFL);
984 if (termsig)
985 _exit(0);
986 if (RAND_poll() <= 0) {
987 syslog(LOG_ERR, "fatal: RAND_poll() failed");
988 _exit(1);
989 }
990 return;
991 default: /* parent */
992 for (i = 0; i < multi; ++i) {
993 if (kidpids[i] == 0) {
994 kidpids[i] = fpid;
995 procs++;
996 break;
997 }
998 }
999 if (i >= multi) {
1000 syslog(LOG_ERR, "fatal: internal error: no free child slots");
1001 killall(1, kidpids);
1002 }
1003 break;
1004 }
1005 }
1006
1007 /* The loop above can only break on termsig */
1008 syslog(LOG_INFO, "terminating on signal: %d", termsig);
1009 killall(0, kidpids);
1010 }
1011 #endif
1012
add_ocsp_cert(OCSP_REQUEST ** req,X509 * cert,const EVP_MD * cert_id_md,X509 * issuer,STACK_OF (OCSP_CERTID)* ids)1013 static int add_ocsp_cert(OCSP_REQUEST **req, X509 *cert,
1014 const EVP_MD *cert_id_md, X509 *issuer,
1015 STACK_OF(OCSP_CERTID) *ids)
1016 {
1017 OCSP_CERTID *id;
1018
1019 if (issuer == NULL) {
1020 BIO_printf(bio_err, "No issuer certificate specified\n");
1021 return 0;
1022 }
1023 if (*req == NULL)
1024 *req = OCSP_REQUEST_new();
1025 if (*req == NULL)
1026 goto err;
1027 id = OCSP_cert_to_id(cert_id_md, cert, issuer);
1028 if (id == NULL || !sk_OCSP_CERTID_push(ids, id))
1029 goto err;
1030 if (!OCSP_request_add0_id(*req, id))
1031 goto err;
1032 return 1;
1033
1034 err:
1035 BIO_printf(bio_err, "Error Creating OCSP request\n");
1036 return 0;
1037 }
1038
add_ocsp_serial(OCSP_REQUEST ** req,char * serial,const EVP_MD * cert_id_md,X509 * issuer,STACK_OF (OCSP_CERTID)* ids)1039 static int add_ocsp_serial(OCSP_REQUEST **req, char *serial,
1040 const EVP_MD *cert_id_md, X509 *issuer,
1041 STACK_OF(OCSP_CERTID) *ids)
1042 {
1043 OCSP_CERTID *id;
1044 X509_NAME *iname;
1045 ASN1_BIT_STRING *ikey;
1046 ASN1_INTEGER *sno;
1047
1048 if (issuer == NULL) {
1049 BIO_printf(bio_err, "No issuer certificate specified\n");
1050 return 0;
1051 }
1052 if (*req == NULL)
1053 *req = OCSP_REQUEST_new();
1054 if (*req == NULL)
1055 goto err;
1056 iname = X509_get_subject_name(issuer);
1057 ikey = X509_get0_pubkey_bitstr(issuer);
1058 sno = s2i_ASN1_INTEGER(NULL, serial);
1059 if (sno == NULL) {
1060 BIO_printf(bio_err, "Error converting serial number %s\n", serial);
1061 return 0;
1062 }
1063 id = OCSP_cert_id_new(cert_id_md, iname, ikey, sno);
1064 ASN1_INTEGER_free(sno);
1065 if (id == NULL || !sk_OCSP_CERTID_push(ids, id))
1066 goto err;
1067 if (!OCSP_request_add0_id(*req, id))
1068 goto err;
1069 return 1;
1070
1071 err:
1072 BIO_printf(bio_err, "Error Creating OCSP request\n");
1073 return 0;
1074 }
1075
print_ocsp_summary(BIO * out,OCSP_BASICRESP * bs,OCSP_REQUEST * req,STACK_OF (OPENSSL_STRING)* names,STACK_OF (OCSP_CERTID)* ids,long nsec,long maxage)1076 static void print_ocsp_summary(BIO *out, OCSP_BASICRESP *bs, OCSP_REQUEST *req,
1077 STACK_OF(OPENSSL_STRING) *names,
1078 STACK_OF(OCSP_CERTID) *ids, long nsec,
1079 long maxage)
1080 {
1081 OCSP_CERTID *id;
1082 const char *name;
1083 int i, status, reason;
1084 ASN1_GENERALIZEDTIME *rev, *thisupd, *nextupd;
1085
1086 if (bs == NULL || req == NULL || !sk_OPENSSL_STRING_num(names)
1087 || !sk_OCSP_CERTID_num(ids))
1088 return;
1089
1090 for (i = 0; i < sk_OCSP_CERTID_num(ids); i++) {
1091 id = sk_OCSP_CERTID_value(ids, i);
1092 name = sk_OPENSSL_STRING_value(names, i);
1093 BIO_printf(out, "%s: ", name);
1094
1095 if (!OCSP_resp_find_status(bs, id, &status, &reason,
1096 &rev, &thisupd, &nextupd)) {
1097 BIO_puts(out, "ERROR: No Status found.\n");
1098 continue;
1099 }
1100
1101 /*
1102 * Check validity: if invalid write to output BIO so we know which
1103 * response this refers to.
1104 */
1105 if (!OCSP_check_validity(thisupd, nextupd, nsec, maxage)) {
1106 BIO_puts(out, "WARNING: Status times invalid.\n");
1107 ERR_print_errors(out);
1108 }
1109 BIO_printf(out, "%s\n", OCSP_cert_status_str(status));
1110
1111 BIO_puts(out, "\tThis Update: ");
1112 ASN1_GENERALIZEDTIME_print(out, thisupd);
1113 BIO_puts(out, "\n");
1114
1115 if (nextupd) {
1116 BIO_puts(out, "\tNext Update: ");
1117 ASN1_GENERALIZEDTIME_print(out, nextupd);
1118 BIO_puts(out, "\n");
1119 }
1120
1121 if (status != V_OCSP_CERTSTATUS_REVOKED)
1122 continue;
1123
1124 if (reason != -1)
1125 BIO_printf(out, "\tReason: %s\n", OCSP_crl_reason_str(reason));
1126
1127 BIO_puts(out, "\tRevocation Time: ");
1128 ASN1_GENERALIZEDTIME_print(out, rev);
1129 BIO_puts(out, "\n");
1130 }
1131 }
1132
make_ocsp_response(BIO * err,OCSP_RESPONSE ** resp,OCSP_REQUEST * req,CA_DB * db,STACK_OF (X509)* ca,X509 * rcert,EVP_PKEY * rkey,const EVP_MD * rmd,STACK_OF (OPENSSL_STRING)* sigopts,STACK_OF (X509)* rother,unsigned long flags,int nmin,int ndays,int badsig)1133 static void make_ocsp_response(BIO *err, OCSP_RESPONSE **resp, OCSP_REQUEST *req,
1134 CA_DB *db, STACK_OF(X509) *ca, X509 *rcert,
1135 EVP_PKEY *rkey, const EVP_MD *rmd,
1136 STACK_OF(OPENSSL_STRING) *sigopts,
1137 STACK_OF(X509) *rother, unsigned long flags,
1138 int nmin, int ndays, int badsig)
1139 {
1140 ASN1_TIME *thisupd = NULL, *nextupd = NULL;
1141 OCSP_CERTID *cid;
1142 OCSP_BASICRESP *bs = NULL;
1143 int i, id_count;
1144 EVP_MD_CTX *mctx = NULL;
1145 EVP_PKEY_CTX *pkctx = NULL;
1146
1147 id_count = OCSP_request_onereq_count(req);
1148
1149 if (id_count <= 0) {
1150 *resp =
1151 OCSP_response_create(OCSP_RESPONSE_STATUS_MALFORMEDREQUEST, NULL);
1152 goto end;
1153 }
1154
1155 bs = OCSP_BASICRESP_new();
1156 thisupd = X509_gmtime_adj(NULL, 0);
1157 if (ndays != -1)
1158 nextupd = X509_time_adj_ex(NULL, ndays, nmin * 60, NULL);
1159
1160 /* Examine each certificate id in the request */
1161 for (i = 0; i < id_count; i++) {
1162 OCSP_ONEREQ *one;
1163 ASN1_INTEGER *serial;
1164 char **inf;
1165 int jj;
1166 int found = 0;
1167 ASN1_OBJECT *cert_id_md_oid;
1168 const EVP_MD *cert_id_md;
1169 one = OCSP_request_onereq_get0(req, i);
1170 cid = OCSP_onereq_get0_id(one);
1171
1172 OCSP_id_get0_info(NULL, &cert_id_md_oid, NULL, NULL, cid);
1173
1174 cert_id_md = EVP_get_digestbyobj(cert_id_md_oid);
1175 if (cert_id_md == NULL) {
1176 *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_INTERNALERROR,
1177 NULL);
1178 goto end;
1179 }
1180 for (jj = 0; jj < sk_X509_num(ca) && !found; jj++) {
1181 X509 *ca_cert = sk_X509_value(ca, jj);
1182 OCSP_CERTID *ca_id = OCSP_cert_to_id(cert_id_md, NULL, ca_cert);
1183
1184 if (OCSP_id_issuer_cmp(ca_id, cid) == 0)
1185 found = 1;
1186
1187 OCSP_CERTID_free(ca_id);
1188 }
1189
1190 if (!found) {
1191 OCSP_basic_add1_status(bs, cid,
1192 V_OCSP_CERTSTATUS_UNKNOWN,
1193 0, NULL, thisupd, nextupd);
1194 continue;
1195 }
1196 OCSP_id_get0_info(NULL, NULL, NULL, &serial, cid);
1197 inf = lookup_serial(db, serial);
1198 if (inf == NULL) {
1199 OCSP_basic_add1_status(bs, cid,
1200 V_OCSP_CERTSTATUS_UNKNOWN,
1201 0, NULL, thisupd, nextupd);
1202 } else if (inf[DB_type][0] == DB_TYPE_VAL) {
1203 OCSP_basic_add1_status(bs, cid,
1204 V_OCSP_CERTSTATUS_GOOD,
1205 0, NULL, thisupd, nextupd);
1206 } else if (inf[DB_type][0] == DB_TYPE_REV) {
1207 ASN1_OBJECT *inst = NULL;
1208 ASN1_TIME *revtm = NULL;
1209 ASN1_GENERALIZEDTIME *invtm = NULL;
1210 OCSP_SINGLERESP *single;
1211 int reason = -1;
1212 unpack_revinfo(&revtm, &reason, &inst, &invtm, inf[DB_rev_date]);
1213 single = OCSP_basic_add1_status(bs, cid,
1214 V_OCSP_CERTSTATUS_REVOKED,
1215 reason, revtm, thisupd, nextupd);
1216 if (invtm != NULL)
1217 OCSP_SINGLERESP_add1_ext_i2d(single, NID_invalidity_date,
1218 invtm, 0, 0);
1219 else if (inst != NULL)
1220 OCSP_SINGLERESP_add1_ext_i2d(single,
1221 NID_hold_instruction_code, inst,
1222 0, 0);
1223 ASN1_OBJECT_free(inst);
1224 ASN1_TIME_free(revtm);
1225 ASN1_GENERALIZEDTIME_free(invtm);
1226 }
1227 }
1228
1229 OCSP_copy_nonce(bs, req);
1230
1231 mctx = EVP_MD_CTX_new();
1232 if ( mctx == NULL || !EVP_DigestSignInit(mctx, &pkctx, rmd, NULL, rkey)) {
1233 *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_INTERNALERROR, NULL);
1234 goto end;
1235 }
1236 for (i = 0; i < sk_OPENSSL_STRING_num(sigopts); i++) {
1237 char *sigopt = sk_OPENSSL_STRING_value(sigopts, i);
1238
1239 if (pkey_ctrl_string(pkctx, sigopt) <= 0) {
1240 BIO_printf(err, "parameter error \"%s\"\n", sigopt);
1241 ERR_print_errors(bio_err);
1242 *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_INTERNALERROR,
1243 NULL);
1244 goto end;
1245 }
1246 }
1247 if (!OCSP_basic_sign_ctx(bs, rcert, mctx, rother, flags)) {
1248 *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_INTERNALERROR, bs);
1249 goto end;
1250 }
1251
1252 if (badsig) {
1253 const ASN1_OCTET_STRING *sig = OCSP_resp_get0_signature(bs);
1254 corrupt_signature(sig);
1255 }
1256
1257 *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_SUCCESSFUL, bs);
1258
1259 end:
1260 EVP_MD_CTX_free(mctx);
1261 ASN1_TIME_free(thisupd);
1262 ASN1_TIME_free(nextupd);
1263 OCSP_BASICRESP_free(bs);
1264 }
1265
lookup_serial(CA_DB * db,ASN1_INTEGER * ser)1266 static char **lookup_serial(CA_DB *db, ASN1_INTEGER *ser)
1267 {
1268 int i;
1269 BIGNUM *bn = NULL;
1270 char *itmp, *row[DB_NUMBER], **rrow;
1271 for (i = 0; i < DB_NUMBER; i++)
1272 row[i] = NULL;
1273 bn = ASN1_INTEGER_to_BN(ser, NULL);
1274 OPENSSL_assert(bn); /* FIXME: should report an error at this
1275 * point and abort */
1276 if (BN_is_zero(bn))
1277 itmp = OPENSSL_strdup("00");
1278 else
1279 itmp = BN_bn2hex(bn);
1280 row[DB_serial] = itmp;
1281 BN_free(bn);
1282 rrow = TXT_DB_get_by_index(db->db, DB_serial, row);
1283 OPENSSL_free(itmp);
1284 return rrow;
1285 }
1286
1287 /* Quick and dirty OCSP server: read in and parse input request */
1288
init_responder(const char * port)1289 static BIO *init_responder(const char *port)
1290 {
1291 #ifdef OPENSSL_NO_SOCK
1292 BIO_printf(bio_err,
1293 "Error setting up accept BIO - sockets not supported.\n");
1294 return NULL;
1295 #else
1296 BIO *acbio = NULL, *bufbio = NULL;
1297
1298 bufbio = BIO_new(BIO_f_buffer());
1299 if (bufbio == NULL)
1300 goto err;
1301 acbio = BIO_new(BIO_s_accept());
1302 if (acbio == NULL
1303 || BIO_set_bind_mode(acbio, BIO_BIND_REUSEADDR) < 0
1304 || BIO_set_accept_port(acbio, port) < 0) {
1305 log_message(LOG_ERR, "Error setting up accept BIO");
1306 goto err;
1307 }
1308
1309 BIO_set_accept_bios(acbio, bufbio);
1310 bufbio = NULL;
1311 if (BIO_do_accept(acbio) <= 0) {
1312 log_message(LOG_ERR, "Error starting accept");
1313 goto err;
1314 }
1315
1316 return acbio;
1317
1318 err:
1319 BIO_free_all(acbio);
1320 BIO_free(bufbio);
1321 return NULL;
1322 #endif
1323 }
1324
1325 #ifndef OPENSSL_NO_SOCK
1326 /*
1327 * Decode %xx URL-decoding in-place. Ignores mal-formed sequences.
1328 */
urldecode(char * p)1329 static int urldecode(char *p)
1330 {
1331 unsigned char *out = (unsigned char *)p;
1332 unsigned char *save = out;
1333
1334 for (; *p; p++) {
1335 if (*p != '%')
1336 *out++ = *p;
1337 else if (isxdigit(_UC(p[1])) && isxdigit(_UC(p[2]))) {
1338 /* Don't check, can't fail because of ixdigit() call. */
1339 *out++ = (OPENSSL_hexchar2int(p[1]) << 4)
1340 | OPENSSL_hexchar2int(p[2]);
1341 p += 2;
1342 }
1343 else
1344 return -1;
1345 }
1346 *out = '\0';
1347 return (int)(out - save);
1348 }
1349 #endif
1350
1351 #ifdef OCSP_DAEMON
socket_timeout(int signum)1352 static void socket_timeout(int signum)
1353 {
1354 if (acfd != (int)INVALID_SOCKET)
1355 (void)shutdown(acfd, SHUT_RD);
1356 }
1357 #endif
1358
do_responder(OCSP_REQUEST ** preq,BIO ** pcbio,BIO * acbio,int timeout)1359 static int do_responder(OCSP_REQUEST **preq, BIO **pcbio, BIO *acbio,
1360 int timeout)
1361 {
1362 #ifdef OPENSSL_NO_SOCK
1363 return 0;
1364 #else
1365 int len;
1366 OCSP_REQUEST *req = NULL;
1367 char inbuf[2048], reqbuf[2048];
1368 char *p, *q;
1369 BIO *cbio = NULL, *getbio = NULL, *b64 = NULL;
1370 const char *client;
1371
1372 *preq = NULL;
1373
1374 /* Connection loss before accept() is routine, ignore silently */
1375 if (BIO_do_accept(acbio) <= 0)
1376 return 0;
1377
1378 cbio = BIO_pop(acbio);
1379 *pcbio = cbio;
1380 client = BIO_get_peer_name(cbio);
1381
1382 # ifdef OCSP_DAEMON
1383 if (timeout > 0) {
1384 (void) BIO_get_fd(cbio, &acfd);
1385 alarm(timeout);
1386 }
1387 # endif
1388
1389 /* Read the request line. */
1390 len = BIO_gets(cbio, reqbuf, sizeof(reqbuf));
1391 if (len <= 0)
1392 goto out;
1393
1394 if (strncmp(reqbuf, "GET ", 4) == 0) {
1395 /* Expecting GET {sp} /URL {sp} HTTP/1.x */
1396 for (p = reqbuf + 4; *p == ' '; ++p)
1397 continue;
1398 if (*p != '/') {
1399 log_message(LOG_INFO, "Invalid request -- bad URL: %s", client);
1400 goto out;
1401 }
1402 p++;
1403
1404 /* Splice off the HTTP version identifier. */
1405 for (q = p; *q; q++)
1406 if (*q == ' ')
1407 break;
1408 if (strncmp(q, " HTTP/1.", 8) != 0) {
1409 log_message(LOG_INFO,
1410 "Invalid request -- bad HTTP version: %s", client);
1411 goto out;
1412 }
1413 *q = '\0';
1414
1415 /*
1416 * Skip "GET / HTTP..." requests often used by load-balancers. Note:
1417 * 'p' was incremented above to point to the first byte *after* the
1418 * leading slash, so with 'GET / ' it is now an empty string.
1419 */
1420 if (p[0] == '\0')
1421 goto out;
1422
1423 len = urldecode(p);
1424 if (len <= 0) {
1425 log_message(LOG_INFO,
1426 "Invalid request -- bad URL encoding: %s", client);
1427 goto out;
1428 }
1429 if ((getbio = BIO_new_mem_buf(p, len)) == NULL
1430 || (b64 = BIO_new(BIO_f_base64())) == NULL) {
1431 log_message(LOG_ERR, "Could not allocate base64 bio: %s", client);
1432 goto out;
1433 }
1434 BIO_set_flags(b64, BIO_FLAGS_BASE64_NO_NL);
1435 getbio = BIO_push(b64, getbio);
1436 } else if (strncmp(reqbuf, "POST ", 5) != 0) {
1437 log_message(LOG_INFO, "Invalid request -- bad HTTP verb: %s", client);
1438 goto out;
1439 }
1440
1441 /* Read and skip past the headers. */
1442 for (;;) {
1443 len = BIO_gets(cbio, inbuf, sizeof(inbuf));
1444 if (len <= 0)
1445 goto out;
1446 if ((inbuf[0] == '\r') || (inbuf[0] == '\n'))
1447 break;
1448 }
1449
1450 # ifdef OCSP_DAEMON
1451 /* Clear alarm before we close the client socket */
1452 alarm(0);
1453 timeout = 0;
1454 # endif
1455
1456 /* Try to read OCSP request */
1457 if (getbio != NULL) {
1458 req = d2i_OCSP_REQUEST_bio(getbio, NULL);
1459 BIO_free_all(getbio);
1460 } else {
1461 req = d2i_OCSP_REQUEST_bio(cbio, NULL);
1462 }
1463
1464 if (req == NULL)
1465 log_message(LOG_ERR, "Error parsing OCSP request");
1466
1467 *preq = req;
1468
1469 out:
1470 # ifdef OCSP_DAEMON
1471 if (timeout > 0)
1472 alarm(0);
1473 acfd = (int)INVALID_SOCKET;
1474 # endif
1475 return 1;
1476 #endif
1477 }
1478
send_ocsp_response(BIO * cbio,OCSP_RESPONSE * resp)1479 static int send_ocsp_response(BIO *cbio, OCSP_RESPONSE *resp)
1480 {
1481 char http_resp[] =
1482 "HTTP/1.0 200 OK\r\nContent-type: application/ocsp-response\r\n"
1483 "Content-Length: %d\r\n\r\n";
1484 if (cbio == NULL)
1485 return 0;
1486 BIO_printf(cbio, http_resp, i2d_OCSP_RESPONSE(resp, NULL));
1487 i2d_OCSP_RESPONSE_bio(cbio, resp);
1488 (void)BIO_flush(cbio);
1489 return 1;
1490 }
1491
1492 #ifndef OPENSSL_NO_SOCK
query_responder(BIO * cbio,const char * host,const char * path,const STACK_OF (CONF_VALUE)* headers,OCSP_REQUEST * req,int req_timeout)1493 static OCSP_RESPONSE *query_responder(BIO *cbio, const char *host,
1494 const char *path,
1495 const STACK_OF(CONF_VALUE) *headers,
1496 OCSP_REQUEST *req, int req_timeout)
1497 {
1498 int fd;
1499 int rv;
1500 int i;
1501 int add_host = 1;
1502 OCSP_REQ_CTX *ctx = NULL;
1503 OCSP_RESPONSE *rsp = NULL;
1504 fd_set confds;
1505 struct timeval tv;
1506
1507 if (req_timeout != -1)
1508 BIO_set_nbio(cbio, 1);
1509
1510 rv = BIO_do_connect(cbio);
1511
1512 if ((rv <= 0) && ((req_timeout == -1) || !BIO_should_retry(cbio))) {
1513 BIO_puts(bio_err, "Error connecting BIO\n");
1514 return NULL;
1515 }
1516
1517 if (BIO_get_fd(cbio, &fd) < 0) {
1518 BIO_puts(bio_err, "Can't get connection fd\n");
1519 goto err;
1520 }
1521
1522 if (req_timeout != -1 && rv <= 0) {
1523 FD_ZERO(&confds);
1524 openssl_fdset(fd, &confds);
1525 tv.tv_usec = 0;
1526 tv.tv_sec = req_timeout;
1527 rv = select(fd + 1, NULL, (void *)&confds, NULL, &tv);
1528 if (rv == 0) {
1529 BIO_puts(bio_err, "Timeout on connect\n");
1530 return NULL;
1531 }
1532 }
1533
1534 ctx = OCSP_sendreq_new(cbio, path, NULL, -1);
1535 if (ctx == NULL)
1536 return NULL;
1537
1538 for (i = 0; i < sk_CONF_VALUE_num(headers); i++) {
1539 CONF_VALUE *hdr = sk_CONF_VALUE_value(headers, i);
1540 if (add_host == 1 && strcasecmp("host", hdr->name) == 0)
1541 add_host = 0;
1542 if (!OCSP_REQ_CTX_add1_header(ctx, hdr->name, hdr->value))
1543 goto err;
1544 }
1545
1546 if (add_host == 1 && OCSP_REQ_CTX_add1_header(ctx, "Host", host) == 0)
1547 goto err;
1548
1549 if (!OCSP_REQ_CTX_set1_req(ctx, req))
1550 goto err;
1551
1552 for (;;) {
1553 rv = OCSP_sendreq_nbio(&rsp, ctx);
1554 if (rv != -1)
1555 break;
1556 if (req_timeout == -1)
1557 continue;
1558 FD_ZERO(&confds);
1559 openssl_fdset(fd, &confds);
1560 tv.tv_usec = 0;
1561 tv.tv_sec = req_timeout;
1562 if (BIO_should_read(cbio)) {
1563 rv = select(fd + 1, (void *)&confds, NULL, NULL, &tv);
1564 } else if (BIO_should_write(cbio)) {
1565 rv = select(fd + 1, NULL, (void *)&confds, NULL, &tv);
1566 } else {
1567 BIO_puts(bio_err, "Unexpected retry condition\n");
1568 goto err;
1569 }
1570 if (rv == 0) {
1571 BIO_puts(bio_err, "Timeout on request\n");
1572 break;
1573 }
1574 if (rv == -1) {
1575 BIO_puts(bio_err, "Select error\n");
1576 break;
1577 }
1578
1579 }
1580 err:
1581 OCSP_REQ_CTX_free(ctx);
1582
1583 return rsp;
1584 }
1585
process_responder(OCSP_REQUEST * req,const char * host,const char * path,const char * port,int use_ssl,STACK_OF (CONF_VALUE)* headers,int req_timeout)1586 OCSP_RESPONSE *process_responder(OCSP_REQUEST *req,
1587 const char *host, const char *path,
1588 const char *port, int use_ssl,
1589 STACK_OF(CONF_VALUE) *headers,
1590 int req_timeout)
1591 {
1592 BIO *cbio = NULL;
1593 SSL_CTX *ctx = NULL;
1594 OCSP_RESPONSE *resp = NULL;
1595
1596 cbio = BIO_new_connect(host);
1597 if (cbio == NULL) {
1598 BIO_printf(bio_err, "Error creating connect BIO\n");
1599 goto end;
1600 }
1601 if (port != NULL)
1602 BIO_set_conn_port(cbio, port);
1603 if (use_ssl == 1) {
1604 BIO *sbio;
1605 ctx = SSL_CTX_new(TLS_client_method());
1606 if (ctx == NULL) {
1607 BIO_printf(bio_err, "Error creating SSL context.\n");
1608 goto end;
1609 }
1610 SSL_CTX_set_mode(ctx, SSL_MODE_AUTO_RETRY);
1611 sbio = BIO_new_ssl(ctx, 1);
1612 cbio = BIO_push(sbio, cbio);
1613 }
1614
1615 resp = query_responder(cbio, host, path, headers, req, req_timeout);
1616 if (resp == NULL)
1617 BIO_printf(bio_err, "Error querying OCSP responder\n");
1618 end:
1619 BIO_free_all(cbio);
1620 SSL_CTX_free(ctx);
1621 return resp;
1622 }
1623 #endif
1624