apps/ocsp.c

   1 /*
   2  * Copyright 2001-2021 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the Apache License 2.0 (the "License").  You may not use
   5  * this file except in compliance with the License.  You can obtain a copy
   6  * in the file LICENSE in the source distribution or at
   7  * https://www.openssl.org/source/license.html
   8  */
   9
  10 #include <openssl/opensslconf.h>
  11
  12 #ifdef OPENSSL_SYS_VMS
  13   /* So fd_set and friends get properly defined on OpenVMS */
  14 # define _XOPEN_SOURCE_EXTENDED
  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 "http_server.h"
  26 #include "progs.h"
  27 #include "internal/sockets.h"
  28 #include <openssl/e_os2.h>
  29 #include <openssl/crypto.h>
  30 #include <openssl/err.h>
  31 #include <openssl/ssl.h>
  32 #include <openssl/evp.h>
  33 #include <openssl/bn.h>
  34 #include <openssl/x509v3.h>
  35
  36 #if defined(__TANDEM)
  37 # if defined(OPENSSL_TANDEM_FLOSS)
  38 #  include <floss.h(floss_fork)>
  39 # endif
  40 #endif
  41
  42 #if defined(OPENSSL_SYS_VXWORKS)
  43 /* not supported */
  44 int setpgid(pid_t pid, pid_t pgid)
  45 {
  46     errno = ENOSYS;
  47     return 0;
  48 }
  49 /* not supported */
  50 pid_t fork(void)
  51 {
  52     errno = ENOSYS;
  53     return (pid_t) -1;
  54 }
  55 #endif
  56 /* Maximum leeway in validity period: default 5 minutes */
  57 #define MAX_VALIDITY_PERIOD    (5 * 60)
  58
  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 int 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,
  68                               long maxage);
  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,
  75                               const EVP_MD *resp_md);
  76
  77 static char **lookup_serial(CA_DB *db, ASN1_INTEGER *ser);
  78 static int do_responder(OCSP_REQUEST **preq, BIO **pcbio, BIO *acbio,
  79                         const char *port, int timeout);
  80 static int send_ocsp_response(BIO *cbio, const OCSP_RESPONSE *resp);
  81 static char *prog;
  82
  83 #ifdef HTTP_DAEMON
  84 static int index_changed(CA_DB *);
  85 #endif
  86
  87 typedef enum OPTION_choice {
  88     OPT_COMMON,
  89     OPT_OUTFILE, OPT_TIMEOUT, OPT_URL, OPT_HOST, OPT_PORT,
  90     OPT_IGNORE_ERR, OPT_NOVERIFY, OPT_NONCE, OPT_NO_NONCE,
  91     OPT_RESP_NO_CERTS, OPT_RESP_KEY_ID, OPT_NO_CERTS,
  92     OPT_NO_SIGNATURE_VERIFY, OPT_NO_CERT_VERIFY, OPT_NO_CHAIN,
  93     OPT_NO_CERT_CHECKS, OPT_NO_EXPLICIT, OPT_TRUST_OTHER,
  94     OPT_NO_INTERN, OPT_BADSIG, OPT_TEXT, OPT_REQ_TEXT, OPT_RESP_TEXT,
  95     OPT_REQIN, OPT_RESPIN, OPT_SIGNER, OPT_VAFILE, OPT_SIGN_OTHER,
  96     OPT_VERIFY_OTHER, OPT_CAFILE, OPT_CAPATH, OPT_CASTORE, OPT_NOCAFILE,
  97     OPT_NOCAPATH, OPT_NOCASTORE,
  98     OPT_VALIDITY_PERIOD, OPT_STATUS_AGE, OPT_SIGNKEY, OPT_REQOUT,
  99     OPT_RESPOUT, OPT_PATH, OPT_ISSUER, OPT_CERT, OPT_SERIAL,
 100     OPT_INDEX, OPT_CA, OPT_NMIN, OPT_REQUEST, OPT_NDAYS, OPT_RSIGNER,
 101     OPT_RKEY, OPT_ROTHER, OPT_RMD, OPT_RSIGOPT, OPT_HEADER,
 102     OPT_PASSIN,
 103     OPT_RCID,
 104     OPT_V_ENUM,
 105     OPT_MD,
 106     OPT_MULTI, OPT_PROV_ENUM
 107 } OPTION_CHOICE;
 108
 109 const OPTIONS ocsp_options[] = {
 110     OPT_SECTION("General"),
 111     {"help", OPT_HELP, '-', "Display this summary"},
 112     {"ignore_err", OPT_IGNORE_ERR, '-',
 113      "Ignore error on OCSP request or response and continue running"},
 114     {"CAfile", OPT_CAFILE, '<', "Trusted certificates file"},
 115     {"CApath", OPT_CAPATH, '<', "Trusted certificates directory"},
 116     {"CAstore", OPT_CASTORE, ':', "Trusted certificates store URI"},
 117     {"no-CAfile", OPT_NOCAFILE, '-',
 118      "Do not load the default certificates file"},
 119     {"no-CApath", OPT_NOCAPATH, '-',
 120      "Do not load certificates from the default certificates directory"},
 121     {"no-CAstore", OPT_NOCASTORE, '-',
 122      "Do not load certificates from the default certificates store"},
 123
 124     OPT_SECTION("Responder"),
 125     {"timeout", OPT_TIMEOUT, 'p',
 126      "Connection timeout (in seconds) to the OCSP responder"},
 127     {"resp_no_certs", OPT_RESP_NO_CERTS, '-',
 128      "Don't include any certificates in response"},
 129 #ifdef HTTP_DAEMON
 130     {"multi", OPT_MULTI, 'p', "run multiple responder processes"},
 131 #endif
 132     {"no_certs", OPT_NO_CERTS, '-',
 133      "Don't include any certificates in signed request"},
 134     {"badsig", OPT_BADSIG, '-',
 135         "Corrupt last byte of loaded OSCP response signature (for test)"},
 136     {"CA", OPT_CA, '<', "CA certificate"},
 137     {"nmin", OPT_NMIN, 'p', "Number of minutes before next update"},
 138     {"nrequest", OPT_REQUEST, 'p',
 139      "Number of requests to accept (default unlimited)"},
 140     {"reqin", OPT_REQIN, 's', "File with the DER-encoded request"},
 141     {"signer", OPT_SIGNER, '<', "Certificate to sign OCSP request with"},
 142     {"sign_other", OPT_SIGN_OTHER, '<',
 143      "Additional certificates to include in signed request"},
 144     {"index", OPT_INDEX, '<', "Certificate status index file"},
 145     {"ndays", OPT_NDAYS, 'p', "Number of days before next update"},
 146     {"rsigner", OPT_RSIGNER, '<',
 147      "Responder certificate to sign responses with"},
 148     {"rkey", OPT_RKEY, '<', "Responder key to sign responses with"},
 149     {"passin", OPT_PASSIN, 's', "Responder key pass phrase source"},
 150     {"rother", OPT_ROTHER, '<', "Other certificates to include in response"},
 151     {"rmd", OPT_RMD, 's', "Digest Algorithm to use in signature of OCSP response"},
 152     {"rsigopt", OPT_RSIGOPT, 's', "OCSP response signature parameter in n:v form"},
 153     {"header", OPT_HEADER, 's', "key=value header to add"},
 154     {"rcid", OPT_RCID, 's', "Use specified algorithm for cert id in response"},
 155     {"", OPT_MD, '-', "Any supported digest algorithm (sha1,sha256, ... )"},
 156
 157     OPT_SECTION("Client"),
 158     {"url", OPT_URL, 's', "Responder URL"},
 159     {"host", OPT_HOST, 's', "TCP/IP hostname:port to connect to"},
 160     {"port", OPT_PORT, 'p', "Port to run responder on"},
 161     {"out", OPT_OUTFILE, '>', "Output filename"},
 162     {"noverify", OPT_NOVERIFY, '-', "Don't verify response at all"},
 163     {"nonce", OPT_NONCE, '-', "Add OCSP nonce to request"},
 164     {"no_nonce", OPT_NO_NONCE, '-', "Don't add OCSP nonce to request"},
 165     {"no_signature_verify", OPT_NO_SIGNATURE_VERIFY, '-',
 166      "Don't check signature on response"},
 167     {"resp_key_id", OPT_RESP_KEY_ID, '-',
 168      "Identify response by signing certificate key ID"},
 169     {"no_cert_verify", OPT_NO_CERT_VERIFY, '-',
 170      "Don't check signing certificate"},
 171     {"text", OPT_TEXT, '-', "Print text form of request and response"},
 172     {"req_text", OPT_REQ_TEXT, '-', "Print text form of request"},
 173     {"resp_text", OPT_RESP_TEXT, '-', "Print text form of response"},
 174     {"no_chain", OPT_NO_CHAIN, '-', "Don't chain verify response"},
 175     {"no_cert_checks", OPT_NO_CERT_CHECKS, '-',
 176      "Don't do additional checks on signing certificate"},
 177     {"no_explicit", OPT_NO_EXPLICIT, '-',
 178      "Do not explicitly check the chain, just verify the root"},
 179     {"trust_other", OPT_TRUST_OTHER, '-',
 180      "Don't verify additional certificates"},
 181     {"no_intern", OPT_NO_INTERN, '-',
 182      "Don't search certificates contained in response for signer"},
 183     {"respin", OPT_RESPIN, 's', "File with the DER-encoded response"},
 184     {"VAfile", OPT_VAFILE, '<', "Validator certificates file"},
 185     {"verify_other", OPT_VERIFY_OTHER, '<',
 186      "Additional certificates to search for signer"},
 187     {"path", OPT_PATH, 's', "Path to use in OCSP request"},
 188     {"cert", OPT_CERT, '<', "Certificate to check"},
 189     {"serial", OPT_SERIAL, 's', "Serial number to check"},
 190     {"validity_period", OPT_VALIDITY_PERIOD, 'u',
 191      "Maximum validity discrepancy in seconds"},
 192     {"signkey", OPT_SIGNKEY, 's', "Private key to sign OCSP request with"},
 193     {"reqout", OPT_REQOUT, 's', "Output file for the DER-encoded request"},
 194     {"respout", OPT_RESPOUT, 's', "Output file for the DER-encoded response"},
 195     {"issuer", OPT_ISSUER, '<', "Issuer certificate"},
 196     {"status_age", OPT_STATUS_AGE, 'p', "Maximum status age in seconds"},
 197
 198     OPT_V_OPTIONS,
 199     OPT_PROV_OPTIONS,
 200     {NULL}
 201 };
 202
 203 int ocsp_main(int argc, char **argv)
 204 {
 205     BIO *acbio = NULL, *cbio = NULL, *derbio = NULL, *out = NULL;
 206     EVP_MD *cert_id_md = NULL, *rsign_md = NULL;
 207     STACK_OF(OPENSSL_STRING) *rsign_sigopts = NULL;
 208     int trailing_md = 0;
 209     CA_DB *rdb = NULL;
 210     EVP_PKEY *key = NULL, *rkey = NULL;
 211     OCSP_BASICRESP *bs = NULL;
 212     OCSP_REQUEST *req = NULL;
 213     OCSP_RESPONSE *resp = NULL;
 214     STACK_OF(CONF_VALUE) *headers = NULL;
 215     STACK_OF(OCSP_CERTID) *ids = NULL;
 216     STACK_OF(OPENSSL_STRING) *reqnames = NULL;
 217     STACK_OF(X509) *sign_other = NULL, *verify_other = NULL, *rother = NULL;
 218     STACK_OF(X509) *issuers = NULL;
 219     X509 *issuer = NULL, *cert = NULL;
 220     STACK_OF(X509) *rca_cert = NULL;
 221     EVP_MD *resp_certid_md = NULL;
 222     X509 *signer = NULL, *rsigner = NULL;
 223     X509_STORE *store = NULL;
 224     X509_VERIFY_PARAM *vpm = NULL;
 225     const char *CAfile = NULL, *CApath = NULL, *CAstore = NULL;
 226     char *header, *value, *respdigname = NULL;
 227     char *host = NULL, *port = NULL, *path = "/", *outfile = NULL;
 228     char *rca_filename = NULL, *reqin = NULL, *respin = NULL;
 229     char *reqout = NULL, *respout = NULL, *ridx_filename = NULL;
 230     char *rsignfile = NULL, *rkeyfile = NULL;
 231     char *passinarg = NULL, *passin = NULL;
 232     char *sign_certfile = NULL, *verify_certfile = NULL, *rcertfile = NULL;
 233     char *signfile = NULL, *keyfile = NULL;
 234     char *thost = NULL, *tport = NULL, *tpath = NULL;
 235     int noCAfile = 0, noCApath = 0, noCAstore = 0;
 236     int accept_count = -1, add_nonce = 1, noverify = 0, use_ssl = -1;
 237     int vpmtouched = 0, badsig = 0, i, ignore_err = 0, nmin = 0, ndays = -1;
 238     int req_text = 0, resp_text = 0, res, ret = 1;
 239     int req_timeout = -1;
 240     long nsec = MAX_VALIDITY_PERIOD, maxage = -1;
 241     unsigned long sign_flags = 0, verify_flags = 0, rflags = 0;
 242     OPTION_CHOICE o;
 243
 244     if ((reqnames = sk_OPENSSL_STRING_new_null()) == NULL
 245             || (ids = sk_OCSP_CERTID_new_null()) == NULL
 246             || (vpm = X509_VERIFY_PARAM_new()) == NULL)
 247         goto end;
 248
 249     prog = opt_init(argc, argv, ocsp_options);
 250     while ((o = opt_next()) != OPT_EOF) {
 251         switch (o) {
 252         case OPT_EOF:
 253         case OPT_ERR:
 254  opthelp:
 255             BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
 256             goto end;
 257         case OPT_HELP:
 258             ret = 0;
 259             opt_help(ocsp_options);
 260             goto end;
 261         case OPT_OUTFILE:
 262             outfile = opt_arg();
 263             break;
 264         case OPT_TIMEOUT:
 265 #ifndef OPENSSL_NO_SOCK
 266             req_timeout = atoi(opt_arg());
 267 #endif
 268             break;
 269         case OPT_URL:
 270             OPENSSL_free(thost);
 271             OPENSSL_free(tport);
 272             OPENSSL_free(tpath);
 273             thost = tport = tpath = NULL;
 274             if (!OSSL_HTTP_parse_url(opt_arg(), &use_ssl, NULL /* userinfo */,
 275                                      &host, &port, NULL /* port_num */,
 276                                      &path, NULL /* qry */, NULL /* frag */)) {
 277                 BIO_printf(bio_err, "%s Error parsing -url argument\n", prog);
 278                 goto end;
 279             }
 280             thost = host;
 281             tport = port;
 282             tpath = path;
 283             break;
 284         case OPT_HOST:
 285             host = opt_arg();
 286             break;
 287         case OPT_PORT:
 288             port = opt_arg();
 289             break;
 290         case OPT_IGNORE_ERR:
 291             ignore_err = 1;
 292             break;
 293         case OPT_NOVERIFY:
 294             noverify = 1;
 295             break;
 296         case OPT_NONCE:
 297             add_nonce = 2;
 298             break;
 299         case OPT_NO_NONCE:
 300             add_nonce = 0;
 301             break;
 302         case OPT_RESP_NO_CERTS:
 303             rflags |= OCSP_NOCERTS;
 304             break;
 305         case OPT_RESP_KEY_ID:
 306             rflags |= OCSP_RESPID_KEY;
 307             break;
 308         case OPT_NO_CERTS:
 309             sign_flags |= OCSP_NOCERTS;
 310             break;
 311         case OPT_NO_SIGNATURE_VERIFY:
 312             verify_flags |= OCSP_NOSIGS;
 313             break;
 314         case OPT_NO_CERT_VERIFY:
 315             verify_flags |= OCSP_NOVERIFY;
 316             break;
 317         case OPT_NO_CHAIN:
 318             verify_flags |= OCSP_NOCHAIN;
 319             break;
 320         case OPT_NO_CERT_CHECKS:
 321             verify_flags |= OCSP_NOCHECKS;
 322             break;
 323         case OPT_NO_EXPLICIT:
 324             verify_flags |= OCSP_NOEXPLICIT;
 325             break;
 326         case OPT_TRUST_OTHER:
 327             verify_flags |= OCSP_TRUSTOTHER;
 328             break;
 329         case OPT_NO_INTERN:
 330             verify_flags |= OCSP_NOINTERN;
 331             break;
 332         case OPT_BADSIG:
 333             badsig = 1;
 334             break;
 335         case OPT_TEXT:
 336             req_text = resp_text = 1;
 337             break;
 338         case OPT_REQ_TEXT:
 339             req_text = 1;
 340             break;
 341         case OPT_RESP_TEXT:
 342             resp_text = 1;
 343             break;
 344         case OPT_REQIN:
 345             reqin = opt_arg();
 346             break;
 347         case OPT_RESPIN:
 348             respin = opt_arg();
 349             break;
 350         case OPT_SIGNER:
 351             signfile = opt_arg();
 352             break;
 353         case OPT_VAFILE:
 354             verify_certfile = opt_arg();
 355             verify_flags |= OCSP_TRUSTOTHER;
 356             break;
 357         case OPT_SIGN_OTHER:
 358             sign_certfile = opt_arg();
 359             break;
 360         case OPT_VERIFY_OTHER:
 361             verify_certfile = opt_arg();
 362             break;
 363         case OPT_CAFILE:
 364             CAfile = opt_arg();
 365             break;
 366         case OPT_CAPATH:
 367             CApath = opt_arg();
 368             break;
 369         case OPT_CASTORE:
 370             CAstore = opt_arg();
 371             break;
 372         case OPT_NOCAFILE:
 373             noCAfile = 1;
 374             break;
 375         case OPT_NOCAPATH:
 376             noCApath = 1;
 377             break;
 378         case OPT_NOCASTORE:
 379             noCAstore = 1;
 380             break;
 381         case OPT_V_CASES:
 382             if (!opt_verify(o, vpm))
 383                 goto end;
 384             vpmtouched++;
 385             break;
 386         case OPT_VALIDITY_PERIOD:
 387             opt_long(opt_arg(), &nsec);
 388             break;
 389         case OPT_STATUS_AGE:
 390             opt_long(opt_arg(), &maxage);
 391             break;
 392         case OPT_SIGNKEY:
 393             keyfile = opt_arg();
 394             break;
 395         case OPT_REQOUT:
 396             reqout = opt_arg();
 397             break;
 398         case OPT_RESPOUT:
 399             respout = opt_arg();
 400             break;
 401         case OPT_PATH:
 402             path = opt_arg();
 403             break;
 404         case OPT_ISSUER:
 405             issuer = load_cert(opt_arg(), FORMAT_UNDEF, "issuer certificate");
 406             if (issuer == NULL)
 407                 goto end;
 408             if (issuers == NULL) {
 409                 if ((issuers = sk_X509_new_null()) == NULL)
 410                     goto end;
 411             }
 412             if (!sk_X509_push(issuers, issuer))
 413                 goto end;
 414             break;
 415         case OPT_CERT:
 416             X509_free(cert);
 417             cert = load_cert(opt_arg(), FORMAT_UNDEF, "certificate");
 418             if (cert == NULL)
 419                 goto end;
 420             if (cert_id_md == NULL)
 421                 cert_id_md = (EVP_MD *)EVP_sha1();
 422             if (!add_ocsp_cert(&req, cert, cert_id_md, issuer, ids))
 423                 goto end;
 424             if (!sk_OPENSSL_STRING_push(reqnames, opt_arg()))
 425                 goto end;
 426             trailing_md = 0;
 427             break;
 428         case OPT_SERIAL:
 429             if (cert_id_md == NULL)
 430                 cert_id_md = (EVP_MD *)EVP_sha1();
 431             if (!add_ocsp_serial(&req, opt_arg(), cert_id_md, issuer, ids))
 432                 goto end;
 433             if (!sk_OPENSSL_STRING_push(reqnames, opt_arg()))
 434                 goto end;
 435             trailing_md = 0;
 436             break;
 437         case OPT_INDEX:
 438             ridx_filename = opt_arg();
 439             break;
 440         case OPT_CA:
 441             rca_filename = opt_arg();
 442             break;
 443         case OPT_NMIN:
 444             nmin = opt_int_arg();
 445             if (ndays == -1)
 446                 ndays = 0;
 447             break;
 448         case OPT_REQUEST:
 449             accept_count = opt_int_arg();
 450             break;
 451         case OPT_NDAYS:
 452             ndays = atoi(opt_arg());
 453             break;
 454         case OPT_RSIGNER:
 455             rsignfile = opt_arg();
 456             break;
 457         case OPT_RKEY:
 458             rkeyfile = opt_arg();
 459             break;
 460         case OPT_PASSIN:
 461             passinarg = opt_arg();
 462             break;
 463         case OPT_ROTHER:
 464             rcertfile = opt_arg();
 465             break;
 466         case OPT_RMD:   /* Response MessageDigest */
 467             respdigname = opt_arg();
 468             break;
 469         case OPT_RSIGOPT:
 470             if (rsign_sigopts == NULL)
 471                 rsign_sigopts = sk_OPENSSL_STRING_new_null();
 472             if (rsign_sigopts == NULL
 473                 || !sk_OPENSSL_STRING_push(rsign_sigopts, opt_arg()))
 474                 goto end;
 475             break;
 476         case OPT_HEADER:
 477             header = opt_arg();
 478             value = strchr(header, '=');
 479             if (value == NULL) {
 480                 BIO_printf(bio_err, "Missing = in header key=value\n");
 481                 goto opthelp;
 482             }
 483             *value++ = '\0';
 484             if (!X509V3_add_value(header, value, &headers))
 485                 goto end;
 486             break;
 487         case OPT_RCID:
 488             if (!opt_md(opt_arg(), &resp_certid_md))
 489                 goto opthelp;
 490             break;
 491         case OPT_MD:
 492             if (trailing_md) {
 493                 BIO_printf(bio_err,
 494                            "%s: Digest must be before -cert or -serial\n",
 495                            prog);
 496                 goto opthelp;
 497             }
 498             if (!opt_md(opt_unknown(), &cert_id_md))
 499                 goto opthelp;
 500             trailing_md = 1;
 501             break;
 502         case OPT_MULTI:
 503 #ifdef HTTP_DAEMON
 504             multi = atoi(opt_arg());
 505 #endif
 506             break;
 507         case OPT_PROV_CASES:
 508             if (!opt_provider(o))
 509                 goto end;
 510             break;
 511         }
 512     }
 513
 514     /* No extra arguments. */
 515     argc = opt_num_rest();
 516     if (argc != 0)
 517         goto opthelp;
 518
 519     if (trailing_md) {
 520         BIO_printf(bio_err, "%s: Digest must be before -cert or -serial\n",
 521                    prog);
 522         goto opthelp;
 523     }
 524
 525     if (respdigname != NULL) {
 526         if (!opt_md(respdigname, &rsign_md))
 527             goto end;
 528     }
 529
 530     /* Have we anything to do? */
 531     if (req == NULL && reqin == NULL
 532         && respin == NULL && !(port != NULL && ridx_filename != NULL))
 533         goto opthelp;
 534
 535     out = bio_open_default(outfile, 'w', FORMAT_TEXT);
 536     if (out == NULL)
 537         goto end;
 538
 539     if (req == NULL && (add_nonce != 2))
 540         add_nonce = 0;
 541
 542     if (req == NULL && reqin != NULL) {
 543         derbio = bio_open_default(reqin, 'r', FORMAT_ASN1);
 544         if (derbio == NULL)
 545             goto end;
 546         req = d2i_OCSP_REQUEST_bio(derbio, NULL);
 547         BIO_free(derbio);
 548         if (req == NULL) {
 549             BIO_printf(bio_err, "Error reading OCSP request\n");
 550             goto end;
 551         }
 552     }
 553
 554     if (req == NULL && port != NULL) {
 555 #ifndef OPENSSL_NO_SOCK
 556         acbio = http_server_init_bio(prog, port);
 557         if (acbio == NULL)
 558             goto end;
 559 #else
 560         BIO_printf(bio_err, "Cannot act as server - sockets not supported\n");
 561         goto end;
 562 #endif
 563     }
 564
 565     if (rsignfile != NULL) {
 566         if (rkeyfile == NULL)
 567             rkeyfile = rsignfile;
 568         rsigner = load_cert(rsignfile, FORMAT_UNDEF, "responder certificate");
 569         if (rsigner == NULL) {
 570             BIO_printf(bio_err, "Error loading responder certificate\n");
 571             goto end;
 572         }
 573         if (!load_certs(rca_filename, 0, &rca_cert, NULL, "CA certificates"))
 574             goto end;
 575         if (rcertfile != NULL) {
 576             if (!load_certs(rcertfile, 0, &rother, NULL,
 577                             "responder other certificates"))
 578                 goto end;
 579         }
 580         if (!app_passwd(passinarg, NULL, &passin, NULL)) {
 581             BIO_printf(bio_err, "Error getting password\n");
 582             goto end;
 583         }
 584         rkey = load_key(rkeyfile, FORMAT_UNDEF, 0, passin, NULL,
 585                         "responder private key");
 586         if (rkey == NULL)
 587             goto end;
 588     }
 589
 590     if (ridx_filename != NULL
 591         && (rkey == NULL || rsigner == NULL || rca_cert == NULL)) {
 592         BIO_printf(bio_err,
 593                    "Responder mode requires certificate, key, and CA.\n");
 594         goto end;
 595     }
 596
 597     if (ridx_filename != NULL) {
 598         rdb = load_index(ridx_filename, NULL);
 599         if (rdb == NULL || index_index(rdb) <= 0) {
 600             ret = 1;
 601             goto end;
 602         }
 603     }
 604
 605 #ifdef HTTP_DAEMON
 606     if (multi && acbio != NULL)
 607         spawn_loop(prog);
 608     if (acbio != NULL && req_timeout > 0)
 609         signal(SIGALRM, socket_timeout);
 610 #endif
 611
 612     if (acbio != NULL)
 613         log_message(prog, LOG_INFO, "waiting for OCSP client connections...");
 614
 615 redo_accept:
 616
 617     if (acbio != NULL) {
 618 #ifdef HTTP_DAEMON
 619         if (index_changed(rdb)) {
 620             CA_DB *newrdb = load_index(ridx_filename, NULL);
 621
 622             if (newrdb != NULL && index_index(newrdb) > 0) {
 623                 free_index(rdb);
 624                 rdb = newrdb;
 625             } else {
 626                 free_index(newrdb);
 627                 log_message(prog, LOG_ERR, "error reloading updated index: %s",
 628                             ridx_filename);
 629             }
 630         }
 631 #endif
 632
 633         req = NULL;
 634         res = do_responder(&req, &cbio, acbio, port, req_timeout);
 635         if (res == 0)
 636             goto redo_accept;
 637
 638         if (req == NULL) {
 639             if (res == 1) {
 640                 resp =
 641                     OCSP_response_create(OCSP_RESPONSE_STATUS_MALFORMEDREQUEST,
 642                                          NULL);
 643                 send_ocsp_response(cbio, resp);
 644             }
 645             goto done_resp;
 646         }
 647     }
 648
 649     if (req == NULL
 650         && (signfile != NULL || reqout != NULL
 651             || host != NULL || add_nonce || ridx_filename != NULL)) {
 652         BIO_printf(bio_err, "Need an OCSP request for this operation!\n");
 653         goto end;
 654     }
 655
 656     if (req != NULL && add_nonce) {
 657         if (!OCSP_request_add1_nonce(req, NULL, -1))
 658             goto end;
 659     }
 660
 661     if (signfile != NULL) {
 662         if (keyfile == NULL)
 663             keyfile = signfile;
 664         signer = load_cert(signfile, FORMAT_UNDEF, "signer certificate");
 665         if (signer == NULL) {
 666             BIO_printf(bio_err, "Error loading signer certificate\n");
 667             goto end;
 668         }
 669         if (sign_certfile != NULL) {
 670             if (!load_certs(sign_certfile, 0, &sign_other, NULL,
 671                             "signer certificates"))
 672                 goto end;
 673         }
 674         key = load_key(keyfile, FORMAT_UNDEF, 0, NULL, NULL,
 675                        "signer private key");
 676         if (key == NULL)
 677             goto end;
 678
 679         if (!OCSP_request_sign(req, signer, key, NULL,
 680                                sign_other, sign_flags)) {
 681             BIO_printf(bio_err, "Error signing OCSP request\n");
 682             goto end;
 683         }
 684     }
 685
 686     if (req_text && req != NULL)
 687         OCSP_REQUEST_print(out, req, 0);
 688
 689     if (reqout != NULL) {
 690         derbio = bio_open_default(reqout, 'w', FORMAT_ASN1);
 691         if (derbio == NULL)
 692             goto end;
 693         i2d_OCSP_REQUEST_bio(derbio, req);
 694         BIO_free(derbio);
 695     }
 696
 697     if (rdb != NULL) {
 698         make_ocsp_response(bio_err, &resp, req, rdb, rca_cert, rsigner, rkey,
 699                            rsign_md, rsign_sigopts, rother, rflags, nmin, ndays,
 700                            badsig, resp_certid_md);
 701         if (cbio != NULL)
 702             send_ocsp_response(cbio, resp);
 703     } else if (host != NULL) {
 704 #ifndef OPENSSL_NO_SOCK
 705         resp = process_responder(req, host, path,
 706                                  port, use_ssl, headers, req_timeout);
 707         if (resp == NULL)
 708             goto end;
 709 #else
 710         BIO_printf(bio_err,
 711                    "Error creating connect BIO - sockets not supported\n");
 712         goto end;
 713 #endif
 714     } else if (respin != NULL) {
 715         derbio = bio_open_default(respin, 'r', FORMAT_ASN1);
 716         if (derbio == NULL)
 717             goto end;
 718         resp = d2i_OCSP_RESPONSE_bio(derbio, NULL);
 719         BIO_free(derbio);
 720         if (resp == NULL) {
 721             BIO_printf(bio_err, "Error reading OCSP response\n");
 722             goto end;
 723         }
 724     } else {
 725         ret = 0;
 726         goto end;
 727     }
 728
 729  done_resp:
 730
 731     if (respout != NULL) {
 732         derbio = bio_open_default(respout, 'w', FORMAT_ASN1);
 733         if (derbio == NULL)
 734             goto end;
 735         i2d_OCSP_RESPONSE_bio(derbio, resp);
 736         BIO_free(derbio);
 737     }
 738
 739     i = OCSP_response_status(resp);
 740     if (i != OCSP_RESPONSE_STATUS_SUCCESSFUL) {
 741         BIO_printf(out, "Responder Error: %s (%d)\n",
 742                    OCSP_response_status_str(i), i);
 743         if (!ignore_err)
 744                 goto end;
 745     }
 746
 747     if (resp_text)
 748         OCSP_RESPONSE_print(out, resp, 0);
 749
 750     /* If running as responder don't verify our own response */
 751     if (cbio != NULL) {
 752         /* If not unlimited, see if we took all we should. */
 753         if (accept_count != -1 && --accept_count <= 0) {
 754             ret = 0;
 755             goto end;
 756         }
 757         BIO_free_all(cbio);
 758         cbio = NULL;
 759         OCSP_REQUEST_free(req);
 760         req = NULL;
 761         OCSP_RESPONSE_free(resp);
 762         resp = NULL;
 763         goto redo_accept;
 764     }
 765     if (ridx_filename != NULL) {
 766         ret = 0;
 767         goto end;
 768     }
 769
 770     if (store == NULL) {
 771         store = setup_verify(CAfile, noCAfile, CApath, noCApath,
 772                              CAstore, noCAstore);
 773         if (!store)
 774             goto end;
 775     }
 776     if (vpmtouched)
 777         X509_STORE_set1_param(store, vpm);
 778     if (verify_certfile != NULL) {
 779         if (!load_certs(verify_certfile, 0, &verify_other, NULL,
 780                         "validator certificates"))
 781             goto end;
 782     }
 783
 784     bs = OCSP_response_get1_basic(resp);
 785     if (bs == NULL) {
 786         BIO_printf(bio_err, "Error parsing response\n");
 787         goto end;
 788     }
 789
 790     ret = 0;
 791
 792     if (!noverify) {
 793         if (req != NULL && ((i = OCSP_check_nonce(req, bs)) <= 0)) {
 794             if (i == -1)
 795                 BIO_printf(bio_err, "WARNING: no nonce in response\n");
 796             else {
 797                 BIO_printf(bio_err, "Nonce Verify error\n");
 798                 ret = 1;
 799                 goto end;
 800             }
 801         }
 802
 803         i = OCSP_basic_verify(bs, verify_other, store, verify_flags);
 804         if (i <= 0 && issuers) {
 805             i = OCSP_basic_verify(bs, issuers, store, OCSP_TRUSTOTHER);
 806             if (i > 0)
 807                 ERR_clear_error();
 808         }
 809         if (i <= 0) {
 810             BIO_printf(bio_err, "Response Verify Failure\n");
 811             ERR_print_errors(bio_err);
 812             ret = 1;
 813         } else {
 814             BIO_printf(bio_err, "Response verify OK\n");
 815         }
 816     }
 817
 818     if (!print_ocsp_summary(out, bs, req, reqnames, ids, nsec, maxage))
 819         ret = 1;
 820
 821  end:
 822     ERR_print_errors(bio_err);
 823     X509_free(signer);
 824     X509_STORE_free(store);
 825     X509_VERIFY_PARAM_free(vpm);
 826     sk_OPENSSL_STRING_free(rsign_sigopts);
 827     EVP_PKEY_free(key);
 828     EVP_PKEY_free(rkey);
 829     EVP_MD_free(cert_id_md);
 830     EVP_MD_free(rsign_md);
 831     EVP_MD_free(resp_certid_md);
 832     X509_free(cert);
 833     sk_X509_pop_free(issuers, X509_free);
 834     X509_free(rsigner);
 835     sk_X509_pop_free(rca_cert, X509_free);
 836     free_index(rdb);
 837     BIO_free_all(cbio);
 838     BIO_free_all(acbio);
 839     BIO_free_all(out);
 840     OCSP_REQUEST_free(req);
 841     OCSP_RESPONSE_free(resp);
 842     OCSP_BASICRESP_free(bs);
 843     sk_OPENSSL_STRING_free(reqnames);
 844     sk_OCSP_CERTID_free(ids);
 845     sk_X509_pop_free(sign_other, X509_free);
 846     sk_X509_pop_free(verify_other, X509_free);
 847     sk_CONF_VALUE_pop_free(headers, X509V3_conf_free);
 848     OPENSSL_free(thost);
 849     OPENSSL_free(tport);
 850     OPENSSL_free(tpath);
 851
 852     return ret;
 853 }
 854
 855 #ifdef HTTP_DAEMON
 856
 857 static int index_changed(CA_DB *rdb)
 858 {
 859     struct stat sb;
 860
 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");
 867             return 1;
 868         }
 869     }
 870     return 0;
 871 }
 872
 873 #endif
 874
 875 static int add_ocsp_cert(OCSP_REQUEST **req, X509 *cert,
 876                          const EVP_MD *cert_id_md, X509 *issuer,
 877                          STACK_OF(OCSP_CERTID) *ids)
 878 {
 879     OCSP_CERTID *id;
 880
 881     if (issuer == NULL) {
 882         BIO_printf(bio_err, "No issuer certificate specified\n");
 883         return 0;
 884     }
 885     if (*req == NULL)
 886         *req = OCSP_REQUEST_new();
 887     if (*req == NULL)
 888         goto err;
 889     id = OCSP_cert_to_id(cert_id_md, cert, issuer);
 890     if (id == NULL || !sk_OCSP_CERTID_push(ids, id))
 891         goto err;
 892     if (!OCSP_request_add0_id(*req, id))
 893         goto err;
 894     return 1;
 895
 896  err:
 897     BIO_printf(bio_err, "Error Creating OCSP request\n");
 898     return 0;
 899 }
 900
 901 static int add_ocsp_serial(OCSP_REQUEST **req, char *serial,
 902                            const EVP_MD *cert_id_md, X509 *issuer,
 903                            STACK_OF(OCSP_CERTID) *ids)
 904 {
 905     OCSP_CERTID *id;
 906     const X509_NAME *iname;
 907     ASN1_BIT_STRING *ikey;
 908     ASN1_INTEGER *sno;
 909
 910     if (issuer == NULL) {
 911         BIO_printf(bio_err, "No issuer certificate specified\n");
 912         return 0;
 913     }
 914     if (*req == NULL)
 915         *req = OCSP_REQUEST_new();
 916     if (*req == NULL)
 917         goto err;
 918     iname = X509_get_subject_name(issuer);
 919     ikey = X509_get0_pubkey_bitstr(issuer);
 920     sno = s2i_ASN1_INTEGER(NULL, serial);
 921     if (sno == NULL) {
 922         BIO_printf(bio_err, "Error converting serial number %s\n", serial);
 923         return 0;
 924     }
 925     id = OCSP_cert_id_new(cert_id_md, iname, ikey, sno);
 926     ASN1_INTEGER_free(sno);
 927     if (id == NULL || !sk_OCSP_CERTID_push(ids, id))
 928         goto err;
 929     if (!OCSP_request_add0_id(*req, id))
 930         goto err;
 931     return 1;
 932
 933  err:
 934     BIO_printf(bio_err, "Error Creating OCSP request\n");
 935     return 0;
 936 }
 937
 938 static int print_ocsp_summary(BIO *out, OCSP_BASICRESP *bs, OCSP_REQUEST *req,
 939                               STACK_OF(OPENSSL_STRING) *names,
 940                               STACK_OF(OCSP_CERTID) *ids, long nsec,
 941                               long maxage)
 942 {
 943     OCSP_CERTID *id;
 944     const char *name;
 945     int i, status, reason;
 946     ASN1_GENERALIZEDTIME *rev, *thisupd, *nextupd;
 947     int ret = 1;
 948
 949     if (req == NULL || !sk_OPENSSL_STRING_num(names))
 950         return 1;
 951
 952     if (bs == NULL || !sk_OCSP_CERTID_num(ids))
 953         return 0;
 954
 955     for (i = 0; i < sk_OCSP_CERTID_num(ids); i++) {
 956         id = sk_OCSP_CERTID_value(ids, i);
 957         name = sk_OPENSSL_STRING_value(names, i);
 958         BIO_printf(out, "%s: ", name);
 959
 960         if (!OCSP_resp_find_status(bs, id, &status, &reason,
 961                                    &rev, &thisupd, &nextupd)) {
 962             BIO_puts(out, "ERROR: No Status found.\n");
 963             ret = 0;
 964             continue;
 965         }
 966
 967         /*
 968          * Check validity: if invalid write to output BIO so we know which
 969          * response this refers to.
 970          */
 971         if (!OCSP_check_validity(thisupd, nextupd, nsec, maxage)) {
 972             BIO_puts(out, "WARNING: Status times invalid.\n");
 973             ERR_print_errors(out);
 974         }
 975         BIO_printf(out, "%s\n", OCSP_cert_status_str(status));
 976
 977         BIO_puts(out, "\tThis Update: ");
 978         ASN1_GENERALIZEDTIME_print(out, thisupd);
 979         BIO_puts(out, "\n");
 980
 981         if (nextupd) {
 982             BIO_puts(out, "\tNext Update: ");
 983             ASN1_GENERALIZEDTIME_print(out, nextupd);
 984             BIO_puts(out, "\n");
 985         }
 986
 987         if (status != V_OCSP_CERTSTATUS_REVOKED)
 988             continue;
 989
 990         if (reason != -1)
 991             BIO_printf(out, "\tReason: %s\n", OCSP_crl_reason_str(reason));
 992
 993         BIO_puts(out, "\tRevocation Time: ");
 994         ASN1_GENERALIZEDTIME_print(out, rev);
 995         BIO_puts(out, "\n");
 996     }
 997     return ret;
 998 }
 999
1000 static void make_ocsp_response(BIO *err, OCSP_RESPONSE **resp, OCSP_REQUEST *req,
1001                               CA_DB *db, STACK_OF(X509) *ca, X509 *rcert,
1002                               EVP_PKEY *rkey, const EVP_MD *rmd,
1003                               STACK_OF(OPENSSL_STRING) *sigopts,
1004                               STACK_OF(X509) *rother, unsigned long flags,
1005                               int nmin, int ndays, int badsig,
1006                               const EVP_MD *resp_md)
1007 {
1008     ASN1_TIME *thisupd = NULL, *nextupd = NULL;
1009     OCSP_CERTID *cid;
1010     OCSP_BASICRESP *bs = NULL;
1011     int i, id_count;
1012     EVP_MD_CTX *mctx = NULL;
1013     EVP_PKEY_CTX *pkctx = NULL;
1014
1015     id_count = OCSP_request_onereq_count(req);
1016
1017     if (id_count <= 0) {
1018         *resp =
1019             OCSP_response_create(OCSP_RESPONSE_STATUS_MALFORMEDREQUEST, NULL);
1020         goto end;
1021     }
1022
1023     bs = OCSP_BASICRESP_new();
1024     thisupd = X509_gmtime_adj(NULL, 0);
1025     if (ndays != -1)
1026         nextupd = X509_time_adj_ex(NULL, ndays, nmin * 60, NULL);
1027
1028     /* Examine each certificate id in the request */
1029     for (i = 0; i < id_count; i++) {
1030         OCSP_ONEREQ *one;
1031         ASN1_INTEGER *serial;
1032         char **inf;
1033         int jj;
1034         int found = 0;
1035         ASN1_OBJECT *cert_id_md_oid;
1036         const EVP_MD *cert_id_md;
1037         OCSP_CERTID *cid_resp_md = NULL;
1038
1039         one = OCSP_request_onereq_get0(req, i);
1040         cid = OCSP_onereq_get0_id(one);
1041
1042         OCSP_id_get0_info(NULL, &cert_id_md_oid, NULL, NULL, cid);
1043
1044         cert_id_md = EVP_get_digestbyobj(cert_id_md_oid);
1045         if (cert_id_md == NULL) {
1046             *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_INTERNALERROR,
1047                                          NULL);
1048             goto end;
1049         }
1050         for (jj = 0; jj < sk_X509_num(ca) && !found; jj++) {
1051             X509 *ca_cert = sk_X509_value(ca, jj);
1052             OCSP_CERTID *ca_id = OCSP_cert_to_id(cert_id_md, NULL, ca_cert);
1053
1054             if (OCSP_id_issuer_cmp(ca_id, cid) == 0) {
1055                 found = 1;
1056                 if (resp_md != NULL)
1057                     cid_resp_md = OCSP_cert_to_id(resp_md, NULL, ca_cert);
1058             }
1059             OCSP_CERTID_free(ca_id);
1060         }
1061         OCSP_id_get0_info(NULL, NULL, NULL, &serial, cid);
1062         inf = lookup_serial(db, serial);
1063
1064         /* at this point, we can have cid be an alias of cid_resp_md */
1065         cid = (cid_resp_md != NULL) ? cid_resp_md : cid;
1066
1067         if (!found) {
1068             OCSP_basic_add1_status(bs, cid,
1069                                    V_OCSP_CERTSTATUS_UNKNOWN,
1070                                    0, NULL, thisupd, nextupd);
1071             continue;
1072         }
1073         if (inf == NULL) {
1074             OCSP_basic_add1_status(bs, cid,
1075                                    V_OCSP_CERTSTATUS_UNKNOWN,
1076                                    0, NULL, thisupd, nextupd);
1077         } else if (inf[DB_type][0] == DB_TYPE_VAL) {
1078             OCSP_basic_add1_status(bs, cid,
1079                                    V_OCSP_CERTSTATUS_GOOD,
1080                                    0, NULL, thisupd, nextupd);
1081         } else if (inf[DB_type][0] == DB_TYPE_REV) {
1082             ASN1_OBJECT *inst = NULL;
1083             ASN1_TIME *revtm = NULL;
1084             ASN1_GENERALIZEDTIME *invtm = NULL;
1085             OCSP_SINGLERESP *single;
1086             int reason = -1;
1087
1088             unpack_revinfo(&revtm, &reason, &inst, &invtm, inf[DB_rev_date]);
1089             single = OCSP_basic_add1_status(bs, cid,
1090                                             V_OCSP_CERTSTATUS_REVOKED,
1091                                             reason, revtm, thisupd, nextupd);
1092             if (invtm != NULL)
1093                 OCSP_SINGLERESP_add1_ext_i2d(single, NID_invalidity_date,
1094                                              invtm, 0, 0);
1095             else if (inst != NULL)
1096                 OCSP_SINGLERESP_add1_ext_i2d(single,
1097                                              NID_hold_instruction_code, inst,
1098                                              0, 0);
1099             ASN1_OBJECT_free(inst);
1100             ASN1_TIME_free(revtm);
1101             ASN1_GENERALIZEDTIME_free(invtm);
1102         }
1103         OCSP_CERTID_free(cid_resp_md);
1104     }
1105
1106     OCSP_copy_nonce(bs, req);
1107
1108     mctx = EVP_MD_CTX_new();
1109     if ( mctx == NULL || !EVP_DigestSignInit(mctx, &pkctx, rmd, NULL, rkey)) {
1110         *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_INTERNALERROR, NULL);
1111         goto end;
1112     }
1113     for (i = 0; i < sk_OPENSSL_STRING_num(sigopts); i++) {
1114         char *sigopt = sk_OPENSSL_STRING_value(sigopts, i);
1115
1116         if (pkey_ctrl_string(pkctx, sigopt) <= 0) {
1117             BIO_printf(err, "parameter error \"%s\"\n", sigopt);
1118             ERR_print_errors(bio_err);
1119             *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_INTERNALERROR,
1120                                          NULL);
1121             goto end;
1122         }
1123     }
1124     if (!OCSP_basic_sign_ctx(bs, rcert, mctx, rother, flags)) {
1125         *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_INTERNALERROR, bs);
1126         goto end;
1127     }
1128
1129     if (badsig) {
1130         const ASN1_OCTET_STRING *sig = OCSP_resp_get0_signature(bs);
1131         corrupt_signature(sig);
1132     }
1133
1134     *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_SUCCESSFUL, bs);
1135
1136  end:
1137     EVP_MD_CTX_free(mctx);
1138     ASN1_TIME_free(thisupd);
1139     ASN1_TIME_free(nextupd);
1140     OCSP_BASICRESP_free(bs);
1141 }
1142
1143 static char **lookup_serial(CA_DB *db, ASN1_INTEGER *ser)
1144 {
1145     int i;
1146     BIGNUM *bn = NULL;
1147     char *itmp, *row[DB_NUMBER], **rrow;
1148     for (i = 0; i < DB_NUMBER; i++)
1149         row[i] = NULL;
1150     bn = ASN1_INTEGER_to_BN(ser, NULL);
1151     OPENSSL_assert(bn);         /* FIXME: should report an error at this
1152                                  * point and abort */
1153     if (BN_is_zero(bn))
1154         itmp = OPENSSL_strdup("00");
1155     else
1156         itmp = BN_bn2hex(bn);
1157     row[DB_serial] = itmp;
1158     BN_free(bn);
1159     rrow = TXT_DB_get_by_index(db->db, DB_serial, row);
1160     OPENSSL_free(itmp);
1161     return rrow;
1162 }
1163
1164 static int do_responder(OCSP_REQUEST **preq, BIO **pcbio, BIO *acbio,
1165                         const char *port, int timeout)
1166 {
1167 #ifndef OPENSSL_NO_SOCK
1168     return http_server_get_asn1_req(ASN1_ITEM_rptr(OCSP_REQUEST),
1169                                     (ASN1_VALUE **)preq, NULL, pcbio, acbio,
1170                                     NULL /* found_keep_alive */,
1171                                     prog, port, 1 /* accept_get */, timeout);
1172 #else
1173     BIO_printf(bio_err,
1174                "Error getting OCSP request - sockets not supported\n");
1175     *preq = NULL;
1176     return 0;
1177 #endif
1178 }
1179
1180 static int send_ocsp_response(BIO *cbio, const OCSP_RESPONSE *resp)
1181 {
1182 #ifndef OPENSSL_NO_SOCK
1183     return http_server_send_asn1_resp(cbio,
1184                                       0 /* no keep-alive */,
1185                                       "application/ocsp-response",
1186                                       ASN1_ITEM_rptr(OCSP_RESPONSE),
1187                                       (const ASN1_VALUE *)resp);
1188 #else
1189     BIO_printf(bio_err,
1190                "Error sending OCSP response - sockets not supported\n");
1191     return 0;
1192 #endif
1193 }
1194
1195 #ifndef OPENSSL_NO_SOCK
1196 OCSP_RESPONSE *process_responder(OCSP_REQUEST *req,
1197                                  const char *host, const char *path,
1198                                  const char *port, int use_ssl,
1199                                  STACK_OF(CONF_VALUE) *headers,
1200                                  int req_timeout)
1201 {
1202     SSL_CTX *ctx = NULL;
1203     OCSP_RESPONSE *resp = NULL;
1204
1205     if (use_ssl == 1) {
1206         ctx = SSL_CTX_new(TLS_client_method());
1207         if (ctx == NULL) {
1208             BIO_printf(bio_err, "Error creating SSL context.\n");
1209             goto end;
1210         }
1211     }
1212
1213     resp = (OCSP_RESPONSE *)
1214         app_http_post_asn1(host, port, path, NULL, NULL /* no proxy used */,
1215                            ctx, headers, "application/ocsp-request",
1216                            (ASN1_VALUE *)req, ASN1_ITEM_rptr(OCSP_REQUEST),
1217                            "application/ocsp-response",
1218                            req_timeout, ASN1_ITEM_rptr(OCSP_RESPONSE));
1219
1220     if (resp == NULL)
1221         BIO_printf(bio_err, "Error querying OCSP responder\n");
1222
1223  end:
1224     SSL_CTX_free(ctx);
1225     return resp;
1226 }
1227 #endif