apps/ocsp.c

   1 /*
   2  * Copyright 2001-2020 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 DEFINE_STACK_OF(OCSP_CERTID)
  37 DEFINE_STACK_OF(CONF_VALUE)
  38
  39 #if defined(__TANDEM)
  40 # if defined(OPENSSL_TANDEM_FLOSS)
  41 #  include <floss.h(floss_fork)>
  42 # endif
  43 #endif
  44
  45 #if defined(OPENSSL_SYS_VXWORKS)
  46 /* not supported */
  47 int setpgid(pid_t pid, pid_t pgid)
  48 {
  49     errno = ENOSYS;
  50     return 0;
  51 }
  52 /* not supported */
  53 pid_t fork(void)
  54 {
  55     errno = ENOSYS;
  56     return (pid_t) -1;
  57 }
  58 #endif
  59 /* Maximum leeway in validity period: default 5 minutes */
  60 #define MAX_VALIDITY_PERIOD    (5 * 60)
  61
  62 static int add_ocsp_cert(OCSP_REQUEST **req, X509 *cert,
  63                          const EVP_MD *cert_id_md, X509 *issuer,
  64                          STACK_OF(OCSP_CERTID) *ids);
  65 static int add_ocsp_serial(OCSP_REQUEST **req, char *serial,
  66                            const EVP_MD *cert_id_md, X509 *issuer,
  67                            STACK_OF(OCSP_CERTID) *ids);
  68 static void print_ocsp_summary(BIO *out, OCSP_BASICRESP *bs, OCSP_REQUEST *req,
  69                               STACK_OF(OPENSSL_STRING) *names,
  70                               STACK_OF(OCSP_CERTID) *ids, long nsec,
  71                               long maxage);
  72 static void make_ocsp_response(BIO *err, OCSP_RESPONSE **resp, OCSP_REQUEST *req,
  73                               CA_DB *db, STACK_OF(X509) *ca, X509 *rcert,
  74                               EVP_PKEY *rkey, const EVP_MD *md,
  75                               STACK_OF(OPENSSL_STRING) *sigopts,
  76                               STACK_OF(X509) *rother, unsigned long flags,
  77                               int nmin, int ndays, int badsig,
  78                               const EVP_MD *resp_md);
  79
  80 static char **lookup_serial(CA_DB *db, ASN1_INTEGER *ser);
  81 static int do_responder(OCSP_REQUEST **preq, BIO **pcbio, BIO *acbio,
  82                         int timeout);
  83 static int send_ocsp_response(BIO *cbio, const OCSP_RESPONSE *resp);
  84 static char *prog;
  85
  86 #ifdef HTTP_DAEMON
  87 static int index_changed(CA_DB *);
  88 #endif
  89
  90 typedef enum OPTION_choice {
  91     OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
  92     OPT_OUTFILE, OPT_TIMEOUT, OPT_URL, OPT_HOST, OPT_PORT,
  93     OPT_IGNORE_ERR, OPT_NOVERIFY, OPT_NONCE, OPT_NO_NONCE,
  94     OPT_RESP_NO_CERTS, OPT_RESP_KEY_ID, OPT_NO_CERTS,
  95     OPT_NO_SIGNATURE_VERIFY, OPT_NO_CERT_VERIFY, OPT_NO_CHAIN,
  96     OPT_NO_CERT_CHECKS, OPT_NO_EXPLICIT, OPT_TRUST_OTHER,
  97     OPT_NO_INTERN, OPT_BADSIG, OPT_TEXT, OPT_REQ_TEXT, OPT_RESP_TEXT,
  98     OPT_REQIN, OPT_RESPIN, OPT_SIGNER, OPT_VAFILE, OPT_SIGN_OTHER,
  99     OPT_VERIFY_OTHER, OPT_CAFILE, OPT_CAPATH, OPT_CASTORE, OPT_NOCAFILE,
 100     OPT_NOCAPATH, OPT_NOCASTORE,
 101     OPT_VALIDITY_PERIOD, OPT_STATUS_AGE, OPT_SIGNKEY, OPT_REQOUT,
 102     OPT_RESPOUT, OPT_PATH, OPT_ISSUER, OPT_CERT, OPT_SERIAL,
 103     OPT_INDEX, OPT_CA, OPT_NMIN, OPT_REQUEST, OPT_NDAYS, OPT_RSIGNER,
 104     OPT_RKEY, OPT_ROTHER, OPT_RMD, OPT_RSIGOPT, OPT_HEADER,
 105     OPT_PASSIN,
 106     OPT_RCID,
 107     OPT_V_ENUM,
 108     OPT_MD,
 109     OPT_MULTI, OPT_PROV_ENUM
 110 } OPTION_CHOICE;
 111
 112 const OPTIONS ocsp_options[] = {
 113     OPT_SECTION("General"),
 114     {"help", OPT_HELP, '-', "Display this summary"},
 115     {"ignore_err", OPT_IGNORE_ERR, '-',
 116      "Ignore error on OCSP request or response and continue running"},
 117     {"CAfile", OPT_CAFILE, '<', "Trusted certificates file"},
 118     {"CApath", OPT_CAPATH, '<', "Trusted certificates directory"},
 119     {"CAstore", OPT_CASTORE, ':', "Trusted certificates store URI"},
 120     {"no-CAfile", OPT_NOCAFILE, '-',
 121      "Do not load the default certificates file"},
 122     {"no-CApath", OPT_NOCAPATH, '-',
 123      "Do not load certificates from the default certificates directory"},
 124     {"no-CAstore", OPT_NOCASTORE, '-',
 125      "Do not load certificates from the default certificates store"},
 126
 127     OPT_SECTION("Responder"),
 128     {"timeout", OPT_TIMEOUT, 'p',
 129      "Connection timeout (in seconds) to the OCSP responder"},
 130     {"resp_no_certs", OPT_RESP_NO_CERTS, '-',
 131      "Don't include any certificates in response"},
 132 #ifdef HTTP_DAEMON
 133     {"multi", OPT_MULTI, 'p', "run multiple responder processes"},
 134 #endif
 135     {"no_certs", OPT_NO_CERTS, '-',
 136      "Don't include any certificates in signed request"},
 137     {"badsig", OPT_BADSIG, '-',
 138         "Corrupt last byte of loaded OSCP response signature (for test)"},
 139     {"CA", OPT_CA, '<', "CA certificate"},
 140     {"nmin", OPT_NMIN, 'p', "Number of minutes before next update"},
 141     {"nrequest", OPT_REQUEST, 'p',
 142      "Number of requests to accept (default unlimited)"},
 143     {"reqin", OPT_REQIN, 's', "File with the DER-encoded request"},
 144     {"signer", OPT_SIGNER, '<', "Certificate to sign OCSP request with"},
 145     {"sign_other", OPT_SIGN_OTHER, '<',
 146      "Additional certificates to include in signed request"},
 147     {"index", OPT_INDEX, '<', "Certificate status index file"},
 148     {"ndays", OPT_NDAYS, 'p', "Number of days before next update"},
 149     {"rsigner", OPT_RSIGNER, '<',
 150      "Responder certificate to sign responses with"},
 151     {"rkey", OPT_RKEY, '<', "Responder key to sign responses with"},
 152     {"passin", OPT_PASSIN, 's', "Responder key pass phrase source"},
 153     {"rother", OPT_ROTHER, '<', "Other certificates to include in response"},
 154     {"rmd", OPT_RMD, 's', "Digest Algorithm to use in signature of OCSP response"},
 155     {"rsigopt", OPT_RSIGOPT, 's', "OCSP response signature parameter in n:v form"},
 156     {"header", OPT_HEADER, 's', "key=value header to add"},
 157     {"rcid", OPT_RCID, 's', "Use specified algorithm for cert id in response"},
 158     {"", OPT_MD, '-', "Any supported digest algorithm (sha1,sha256, ... )"},
 159
 160     OPT_SECTION("Client"),
 161     {"url", OPT_URL, 's', "Responder URL"},
 162     {"host", OPT_HOST, 's', "TCP/IP hostname:port to connect to"},
 163     {"port", OPT_PORT, 'p', "Port to run responder on"},
 164     {"out", OPT_OUTFILE, '>', "Output filename"},
 165     {"noverify", OPT_NOVERIFY, '-', "Don't verify response at all"},
 166     {"nonce", OPT_NONCE, '-', "Add OCSP nonce to request"},
 167     {"no_nonce", OPT_NO_NONCE, '-', "Don't add OCSP nonce to request"},
 168     {"no_signature_verify", OPT_NO_SIGNATURE_VERIFY, '-',
 169      "Don't check signature on response"},
 170     {"resp_key_id", OPT_RESP_KEY_ID, '-',
 171      "Identify response by signing certificate key ID"},
 172     {"no_cert_verify", OPT_NO_CERT_VERIFY, '-',
 173      "Don't check signing certificate"},
 174     {"text", OPT_TEXT, '-', "Print text form of request and response"},
 175     {"req_text", OPT_REQ_TEXT, '-', "Print text form of request"},
 176     {"resp_text", OPT_RESP_TEXT, '-', "Print text form of response"},
 177     {"no_chain", OPT_NO_CHAIN, '-', "Don't chain verify response"},
 178     {"no_cert_checks", OPT_NO_CERT_CHECKS, '-',
 179      "Don't do additional checks on signing certificate"},
 180     {"no_explicit", OPT_NO_EXPLICIT, '-',
 181      "Do not explicitly check the chain, just verify the root"},
 182     {"trust_other", OPT_TRUST_OTHER, '-',
 183      "Don't verify additional certificates"},
 184     {"no_intern", OPT_NO_INTERN, '-',
 185      "Don't search certificates contained in response for signer"},
 186     {"respin", OPT_RESPIN, 's', "File with the DER-encoded response"},
 187     {"VAfile", OPT_VAFILE, '<', "Validator certificates file"},
 188     {"verify_other", OPT_VERIFY_OTHER, '<',
 189      "Additional certificates to search for signer"},
 190     {"path", OPT_PATH, 's', "Path to use in OCSP request"},
 191     {"cert", OPT_CERT, '<', "Certificate to check"},
 192     {"serial", OPT_SERIAL, 's', "Serial number to check"},
 193     {"validity_period", OPT_VALIDITY_PERIOD, 'u',
 194      "Maximum validity discrepancy in seconds"},
 195     {"signkey", OPT_SIGNKEY, 's', "Private key to sign OCSP request with"},
 196     {"reqout", OPT_REQOUT, 's', "Output file for the DER-encoded request"},
 197     {"respout", OPT_RESPOUT, 's', "Output file for the DER-encoded response"},
 198     {"issuer", OPT_ISSUER, '<', "Issuer certificate"},
 199     {"status_age", OPT_STATUS_AGE, 'p', "Maximum status age in seconds"},
 200
 201     OPT_V_OPTIONS,
 202     OPT_PROV_OPTIONS,
 203     {NULL}
 204 };
 205
 206 int ocsp_main(int argc, char **argv)
 207 {
 208     BIO *acbio = NULL, *cbio = NULL, *derbio = NULL, *out = NULL;
 209     const EVP_MD *cert_id_md = NULL, *rsign_md = NULL;
 210     STACK_OF(OPENSSL_STRING) *rsign_sigopts = NULL;
 211     int trailing_md = 0;
 212     CA_DB *rdb = NULL;
 213     EVP_PKEY *key = NULL, *rkey = NULL;
 214     OCSP_BASICRESP *bs = NULL;
 215     OCSP_REQUEST *req = NULL;
 216     OCSP_RESPONSE *resp = NULL;
 217     STACK_OF(CONF_VALUE) *headers = NULL;
 218     STACK_OF(OCSP_CERTID) *ids = NULL;
 219     STACK_OF(OPENSSL_STRING) *reqnames = NULL;
 220     STACK_OF(X509) *sign_other = NULL, *verify_other = NULL, *rother = NULL;
 221     STACK_OF(X509) *issuers = NULL;
 222     X509 *issuer = NULL, *cert = NULL;
 223     STACK_OF(X509) *rca_cert = NULL;
 224     const EVP_MD *resp_certid_md = NULL;
 225     X509 *signer = NULL, *rsigner = NULL;
 226     X509_STORE *store = NULL;
 227     X509_VERIFY_PARAM *vpm = NULL;
 228     const char *CAfile = NULL, *CApath = NULL, *CAstore = NULL;
 229     char *header, *value;
 230     char *host = NULL, *port = NULL, *path = "/", *outfile = NULL;
 231     char *rca_filename = NULL, *reqin = NULL, *respin = NULL;
 232     char *reqout = NULL, *respout = NULL, *ridx_filename = NULL;
 233     char *rsignfile = NULL, *rkeyfile = NULL;
 234     char *passinarg = NULL, *passin = NULL;
 235     char *sign_certfile = NULL, *verify_certfile = NULL, *rcertfile = NULL;
 236     char *signfile = NULL, *keyfile = NULL;
 237     char *thost = NULL, *tport = NULL, *tpath = NULL;
 238     int noCAfile = 0, noCApath = 0, noCAstore = 0;
 239     int accept_count = -1, add_nonce = 1, noverify = 0, use_ssl = -1;
 240     int vpmtouched = 0, badsig = 0, i, ignore_err = 0, nmin = 0, ndays = -1;
 241     int req_text = 0, resp_text = 0, res, ret = 1;
 242     int req_timeout = -1;
 243     long nsec = MAX_VALIDITY_PERIOD, maxage = -1;
 244     unsigned long sign_flags = 0, verify_flags = 0, rflags = 0;
 245     OPTION_CHOICE o;
 246
 247     reqnames = sk_OPENSSL_STRING_new_null();
 248     if (reqnames == NULL)
 249         goto end;
 250     ids = sk_OCSP_CERTID_new_null();
 251     if (ids == NULL)
 252         goto end;
 253     if ((vpm = X509_VERIFY_PARAM_new()) == NULL)
 254         return 1;
 255
 256     prog = opt_init(argc, argv, ocsp_options);
 257     while ((o = opt_next()) != OPT_EOF) {
 258         switch (o) {
 259         case OPT_EOF:
 260         case OPT_ERR:
 261  opthelp:
 262             BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
 263             goto end;
 264         case OPT_HELP:
 265             ret = 0;
 266             opt_help(ocsp_options);
 267             goto end;
 268         case OPT_OUTFILE:
 269             outfile = opt_arg();
 270             break;
 271         case OPT_TIMEOUT:
 272 #ifndef OPENSSL_NO_SOCK
 273             req_timeout = atoi(opt_arg());
 274 #endif
 275             break;
 276         case OPT_URL:
 277             OPENSSL_free(thost);
 278             OPENSSL_free(tport);
 279             OPENSSL_free(tpath);
 280             thost = tport = tpath = NULL;
 281             if (!OSSL_HTTP_parse_url(opt_arg(),
 282                                      &host, &port, NULL, &path, &use_ssl)) {
 283                 BIO_printf(bio_err, "%s Error parsing URL\n", prog);
 284                 goto end;
 285             }
 286             thost = host;
 287             tport = port;
 288             tpath = path;
 289             break;
 290         case OPT_HOST:
 291             host = opt_arg();
 292             break;
 293         case OPT_PORT:
 294             port = opt_arg();
 295             break;
 296         case OPT_IGNORE_ERR:
 297             ignore_err = 1;
 298             break;
 299         case OPT_NOVERIFY:
 300             noverify = 1;
 301             break;
 302         case OPT_NONCE:
 303             add_nonce = 2;
 304             break;
 305         case OPT_NO_NONCE:
 306             add_nonce = 0;
 307             break;
 308         case OPT_RESP_NO_CERTS:
 309             rflags |= OCSP_NOCERTS;
 310             break;
 311         case OPT_RESP_KEY_ID:
 312             rflags |= OCSP_RESPID_KEY;
 313             break;
 314         case OPT_NO_CERTS:
 315             sign_flags |= OCSP_NOCERTS;
 316             break;
 317         case OPT_NO_SIGNATURE_VERIFY:
 318             verify_flags |= OCSP_NOSIGS;
 319             break;
 320         case OPT_NO_CERT_VERIFY:
 321             verify_flags |= OCSP_NOVERIFY;
 322             break;
 323         case OPT_NO_CHAIN:
 324             verify_flags |= OCSP_NOCHAIN;
 325             break;
 326         case OPT_NO_CERT_CHECKS:
 327             verify_flags |= OCSP_NOCHECKS;
 328             break;
 329         case OPT_NO_EXPLICIT:
 330             verify_flags |= OCSP_NOEXPLICIT;
 331             break;
 332         case OPT_TRUST_OTHER:
 333             verify_flags |= OCSP_TRUSTOTHER;
 334             break;
 335         case OPT_NO_INTERN:
 336             verify_flags |= OCSP_NOINTERN;
 337             break;
 338         case OPT_BADSIG:
 339             badsig = 1;
 340             break;
 341         case OPT_TEXT:
 342             req_text = resp_text = 1;
 343             break;
 344         case OPT_REQ_TEXT:
 345             req_text = 1;
 346             break;
 347         case OPT_RESP_TEXT:
 348             resp_text = 1;
 349             break;
 350         case OPT_REQIN:
 351             reqin = opt_arg();
 352             break;
 353         case OPT_RESPIN:
 354             respin = opt_arg();
 355             break;
 356         case OPT_SIGNER:
 357             signfile = opt_arg();
 358             break;
 359         case OPT_VAFILE:
 360             verify_certfile = opt_arg();
 361             verify_flags |= OCSP_TRUSTOTHER;
 362             break;
 363         case OPT_SIGN_OTHER:
 364             sign_certfile = opt_arg();
 365             break;
 366         case OPT_VERIFY_OTHER:
 367             verify_certfile = opt_arg();
 368             break;
 369         case OPT_CAFILE:
 370             CAfile = opt_arg();
 371             break;
 372         case OPT_CAPATH:
 373             CApath = opt_arg();
 374             break;
 375         case OPT_CASTORE:
 376             CAstore = opt_arg();
 377             break;
 378         case OPT_NOCAFILE:
 379             noCAfile = 1;
 380             break;
 381         case OPT_NOCAPATH:
 382             noCApath = 1;
 383             break;
 384         case OPT_NOCASTORE:
 385             noCAstore = 1;
 386             break;
 387         case OPT_V_CASES:
 388             if (!opt_verify(o, vpm))
 389                 goto end;
 390             vpmtouched++;
 391             break;
 392         case OPT_VALIDITY_PERIOD:
 393             opt_long(opt_arg(), &nsec);
 394             break;
 395         case OPT_STATUS_AGE:
 396             opt_long(opt_arg(), &maxage);
 397             break;
 398         case OPT_SIGNKEY:
 399             keyfile = opt_arg();
 400             break;
 401         case OPT_REQOUT:
 402             reqout = opt_arg();
 403             break;
 404         case OPT_RESPOUT:
 405             respout = opt_arg();
 406             break;
 407         case OPT_PATH:
 408             path = opt_arg();
 409             break;
 410         case OPT_ISSUER:
 411             issuer = load_cert(opt_arg(), FORMAT_UNDEF,
 412                                "issuer certificate");
 413             if (issuer == NULL)
 414                 goto end;
 415             if (issuers == NULL) {
 416                 if ((issuers = sk_X509_new_null()) == NULL)
 417                     goto end;
 418             }
 419             if (!sk_X509_push(issuers, issuer))
 420                 goto end;
 421             break;
 422         case OPT_CERT:
 423             X509_free(cert);
 424             cert = load_cert(opt_arg(), FORMAT_UNDEF, "certificate");
 425             if (cert == NULL)
 426                 goto end;
 427             if (cert_id_md == NULL)
 428                 cert_id_md = EVP_sha1();
 429             if (!add_ocsp_cert(&req, cert, cert_id_md, issuer, ids))
 430                 goto end;
 431             if (!sk_OPENSSL_STRING_push(reqnames, opt_arg()))
 432                 goto end;
 433             trailing_md = 0;
 434             break;
 435         case OPT_SERIAL:
 436             if (cert_id_md == NULL)
 437                 cert_id_md = EVP_sha1();
 438             if (!add_ocsp_serial(&req, opt_arg(), cert_id_md, issuer, ids))
 439                 goto end;
 440             if (!sk_OPENSSL_STRING_push(reqnames, opt_arg()))
 441                 goto end;
 442             trailing_md = 0;
 443             break;
 444         case OPT_INDEX:
 445             ridx_filename = opt_arg();
 446             break;
 447         case OPT_CA:
 448             rca_filename = opt_arg();
 449             break;
 450         case OPT_NMIN:
 451             opt_int(opt_arg(), &nmin);
 452             if (ndays == -1)
 453                 ndays = 0;
 454             break;
 455         case OPT_REQUEST:
 456             opt_int(opt_arg(), &accept_count);
 457             break;
 458         case OPT_NDAYS:
 459             ndays = atoi(opt_arg());
 460             break;
 461         case OPT_RSIGNER:
 462             rsignfile = opt_arg();
 463             break;
 464         case OPT_RKEY:
 465             rkeyfile = opt_arg();
 466             break;
 467         case OPT_PASSIN:
 468             passinarg = opt_arg();
 469             break;
 470         case OPT_ROTHER:
 471             rcertfile = opt_arg();
 472             break;
 473         case OPT_RMD:   /* Response MessageDigest */
 474             if (!opt_md(opt_arg(), &rsign_md))
 475                 goto end;
 476             break;
 477         case OPT_RSIGOPT:
 478             if (rsign_sigopts == NULL)
 479                 rsign_sigopts = sk_OPENSSL_STRING_new_null();
 480             if (rsign_sigopts == NULL || !sk_OPENSSL_STRING_push(rsign_sigopts, opt_arg()))
 481                 goto end;
 482             break;
 483         case OPT_HEADER:
 484             header = opt_arg();
 485             value = strchr(header, '=');
 486             if (value == NULL) {
 487                 BIO_printf(bio_err, "Missing = in header key=value\n");
 488                 goto opthelp;
 489             }
 490             *value++ = '\0';
 491             if (!X509V3_add_value(header, value, &headers))
 492                 goto end;
 493             break;
 494         case OPT_RCID:
 495             resp_certid_md = EVP_get_digestbyname(opt_arg());
 496             if (resp_certid_md == NULL)
 497                 goto opthelp;
 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 HTTP_DAEMON
 512             multi = atoi(opt_arg());
 513 #endif
 514             break;
 515         case OPT_PROV_CASES:
 516             if (!opt_provider(o))
 517                 goto end;
 518             break;
 519         }
 520     }
 521     if (trailing_md) {
 522         BIO_printf(bio_err, "%s: Digest must be before -cert or -serial\n",
 523                    prog);
 524         goto opthelp;
 525     }
 526     argc = opt_num_rest();
 527     if (argc != 0)
 528         goto opthelp;
 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,
 569                             "responder certificate");
 570         if (rsigner == NULL) {
 571             BIO_printf(bio_err, "Error loading responder certificate\n");
 572             goto end;
 573         }
 574         if (!load_certs(rca_filename, &rca_cert, NULL, "CA certificates"))
 575             goto end;
 576         if (rcertfile != NULL) {
 577             if (!load_certs(rcertfile, &rother, NULL,
 578                             "responder other certificates"))
 579                 goto end;
 580         }
 581         if (!app_passwd(passinarg, NULL, &passin, NULL)) {
 582             BIO_printf(bio_err, "Error getting password\n");
 583             goto end;
 584         }
 585         rkey = load_key(rkeyfile, FORMAT_PEM, 0, passin, NULL,
 586                         "responder private key");
 587         if (rkey == NULL)
 588             goto end;
 589     }
 590
 591     if (ridx_filename != NULL
 592         && (rkey == NULL || rsigner == NULL || rca_cert == NULL)) {
 593         BIO_printf(bio_err,
 594                    "Responder mode requires certificate, key, and CA.\n");
 595         goto end;
 596     }
 597
 598     if (ridx_filename != NULL) {
 599         rdb = load_index(ridx_filename, NULL);
 600         if (rdb == NULL || index_index(rdb) <= 0) {
 601             ret = 1;
 602             goto end;
 603         }
 604     }
 605
 606 #ifdef HTTP_DAEMON
 607     if (multi && acbio != NULL)
 608         spawn_loop(prog);
 609     if (acbio != NULL && req_timeout > 0)
 610         signal(SIGALRM, socket_timeout);
 611 #endif
 612
 613     if (acbio != NULL)
 614         log_message(prog, LOG_INFO, "waiting for OCSP client connections...");
 615
 616 redo_accept:
 617
 618     if (acbio != NULL) {
 619 #ifdef HTTP_DAEMON
 620         if (index_changed(rdb)) {
 621             CA_DB *newrdb = load_index(ridx_filename, NULL);
 622
 623             if (newrdb != NULL && index_index(newrdb) > 0) {
 624                 free_index(rdb);
 625                 rdb = newrdb;
 626             } else {
 627                 free_index(newrdb);
 628                 log_message(prog, LOG_ERR, "error reloading updated index: %s",
 629                             ridx_filename);
 630             }
 631         }
 632 #endif
 633
 634         req = NULL;
 635         res = do_responder(&req, &cbio, acbio, req_timeout);
 636         if (res == 0)
 637             goto redo_accept;
 638
 639         if (req == NULL) {
 640             if (res == 1) {
 641                 resp =
 642                     OCSP_response_create(OCSP_RESPONSE_STATUS_MALFORMEDREQUEST,
 643                                          NULL);
 644                 send_ocsp_response(cbio, resp);
 645             }
 646             goto done_resp;
 647         }
 648     }
 649
 650     if (req == NULL
 651         && (signfile != NULL || reqout != NULL
 652             || host != NULL || add_nonce || ridx_filename != NULL)) {
 653         BIO_printf(bio_err, "Need an OCSP request for this operation!\n");
 654         goto end;
 655     }
 656
 657     if (req != NULL && add_nonce) {
 658         if (!OCSP_request_add1_nonce(req, NULL, -1))
 659             goto end;
 660     }
 661
 662     if (signfile != NULL) {
 663         if (keyfile == NULL)
 664             keyfile = signfile;
 665         signer = load_cert(signfile, FORMAT_UNDEF, "signer certificate");
 666         if (signer == NULL) {
 667             BIO_printf(bio_err, "Error loading signer certificate\n");
 668             goto end;
 669         }
 670         if (sign_certfile != NULL) {
 671             if (!load_certs(sign_certfile, &sign_other, NULL,
 672                             "signer certificates"))
 673                 goto end;
 674         }
 675         key = load_key(keyfile, FORMAT_PEM, 0, NULL, NULL,
 676                        "signer private key");
 677         if (key == NULL)
 678             goto end;
 679
 680         if (!OCSP_request_sign
 681             (req, signer, key, NULL, sign_other, sign_flags)) {
 682             BIO_printf(bio_err, "Error signing OCSP request\n");
 683             goto end;
 684         }
 685     }
 686
 687     if (req_text && req != NULL)
 688         OCSP_REQUEST_print(out, req, 0);
 689
 690     if (reqout != NULL) {
 691         derbio = bio_open_default(reqout, 'w', FORMAT_ASN1);
 692         if (derbio == NULL)
 693             goto end;
 694         i2d_OCSP_REQUEST_bio(derbio, req);
 695         BIO_free(derbio);
 696     }
 697
 698     if (rdb != NULL) {
 699         make_ocsp_response(bio_err, &resp, req, rdb, rca_cert, rsigner, rkey,
 700                            rsign_md, rsign_sigopts, rother, rflags, nmin, ndays, badsig,
 701                            resp_certid_md);
 702         if (cbio != NULL)
 703             send_ocsp_response(cbio, resp);
 704     } else if (host != NULL) {
 705 #ifndef OPENSSL_NO_SOCK
 706         resp = process_responder(req, host, path,
 707                                  port, use_ssl, headers, req_timeout);
 708         if (resp == NULL)
 709             goto end;
 710 #else
 711         BIO_printf(bio_err,
 712                    "Error creating connect BIO - sockets not supported\n");
 713         goto end;
 714 #endif
 715     } else if (respin != NULL) {
 716         derbio = bio_open_default(respin, 'r', FORMAT_ASN1);
 717         if (derbio == NULL)
 718             goto end;
 719         resp = d2i_OCSP_RESPONSE_bio(derbio, NULL);
 720         BIO_free(derbio);
 721         if (resp == NULL) {
 722             BIO_printf(bio_err, "Error reading OCSP response\n");
 723             goto end;
 724         }
 725     } else {
 726         ret = 0;
 727         goto end;
 728     }
 729
 730  done_resp:
 731
 732     if (respout != NULL) {
 733         derbio = bio_open_default(respout, 'w', FORMAT_ASN1);
 734         if (derbio == NULL)
 735             goto end;
 736         i2d_OCSP_RESPONSE_bio(derbio, resp);
 737         BIO_free(derbio);
 738     }
 739
 740     i = OCSP_response_status(resp);
 741     if (i != OCSP_RESPONSE_STATUS_SUCCESSFUL) {
 742         BIO_printf(out, "Responder Error: %s (%d)\n",
 743                    OCSP_response_status_str(i), i);
 744         if (!ignore_err)
 745                 goto end;
 746     }
 747
 748     if (resp_text)
 749         OCSP_RESPONSE_print(out, resp, 0);
 750
 751     /* If running as responder don't verify our own response */
 752     if (cbio != NULL) {
 753         /* If not unlimited, see if we took all we should. */
 754         if (accept_count != -1 && --accept_count <= 0) {
 755             ret = 0;
 756             goto end;
 757         }
 758         BIO_free_all(cbio);
 759         cbio = NULL;
 760         OCSP_REQUEST_free(req);
 761         req = NULL;
 762         OCSP_RESPONSE_free(resp);
 763         resp = NULL;
 764         goto redo_accept;
 765     }
 766     if (ridx_filename != NULL) {
 767         ret = 0;
 768         goto end;
 769     }
 770
 771     if (store == NULL) {
 772         store = setup_verify(CAfile, noCAfile, CApath, noCApath,
 773                              CAstore, noCAstore);
 774         if (!store)
 775             goto end;
 776     }
 777     if (vpmtouched)
 778         X509_STORE_set1_param(store, vpm);
 779     if (verify_certfile != NULL) {
 780         if (!load_certs(verify_certfile, &verify_other, NULL,
 781                         "validator certificates"))
 782             goto end;
 783     }
 784
 785     bs = OCSP_response_get1_basic(resp);
 786     if (bs == NULL) {
 787         BIO_printf(bio_err, "Error parsing response\n");
 788         goto end;
 789     }
 790
 791     ret = 0;
 792
 793     if (!noverify) {
 794         if (req != NULL && ((i = OCSP_check_nonce(req, bs)) <= 0)) {
 795             if (i == -1)
 796                 BIO_printf(bio_err, "WARNING: no nonce in response\n");
 797             else {
 798                 BIO_printf(bio_err, "Nonce Verify error\n");
 799                 ret = 1;
 800                 goto end;
 801             }
 802         }
 803
 804         i = OCSP_basic_verify(bs, verify_other, store, verify_flags);
 805         if (i <= 0 && issuers) {
 806             i = OCSP_basic_verify(bs, issuers, store, OCSP_TRUSTOTHER);
 807             if (i > 0)
 808                 ERR_clear_error();
 809         }
 810         if (i <= 0) {
 811             BIO_printf(bio_err, "Response Verify Failure\n");
 812             ERR_print_errors(bio_err);
 813             ret = 1;
 814         } else {
 815             BIO_printf(bio_err, "Response verify OK\n");
 816         }
 817     }
 818
 819     print_ocsp_summary(out, bs, req, reqnames, ids, nsec, maxage);
 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     X509_free(cert);
 830     sk_X509_pop_free(issuers, X509_free);
 831     X509_free(rsigner);
 832     sk_X509_pop_free(rca_cert, X509_free);
 833     free_index(rdb);
 834     BIO_free_all(cbio);
 835     BIO_free_all(acbio);
 836     BIO_free_all(out);
 837     OCSP_REQUEST_free(req);
 838     OCSP_RESPONSE_free(resp);
 839     OCSP_BASICRESP_free(bs);
 840     sk_OPENSSL_STRING_free(reqnames);
 841     sk_OCSP_CERTID_free(ids);
 842     sk_X509_pop_free(sign_other, X509_free);
 843     sk_X509_pop_free(verify_other, X509_free);
 844     sk_CONF_VALUE_pop_free(headers, X509V3_conf_free);
 845     OPENSSL_free(thost);
 846     OPENSSL_free(tport);
 847     OPENSSL_free(tpath);
 848
 849     return ret;
 850 }
 851
 852 #ifdef HTTP_DAEMON
 853
 854 static int index_changed(CA_DB *rdb)
 855 {
 856     struct stat sb;
 857
 858     if (rdb != NULL && stat(rdb->dbfname, &sb) != -1) {
 859         if (rdb->dbst.st_mtime != sb.st_mtime
 860             || rdb->dbst.st_ctime != sb.st_ctime
 861             || rdb->dbst.st_ino != sb.st_ino
 862             || rdb->dbst.st_dev != sb.st_dev) {
 863             syslog(LOG_INFO, "index file changed, reloading");
 864             return 1;
 865         }
 866     }
 867     return 0;
 868 }
 869
 870 #endif
 871
 872 static int add_ocsp_cert(OCSP_REQUEST **req, X509 *cert,
 873                          const EVP_MD *cert_id_md, X509 *issuer,
 874                          STACK_OF(OCSP_CERTID) *ids)
 875 {
 876     OCSP_CERTID *id;
 877
 878     if (issuer == NULL) {
 879         BIO_printf(bio_err, "No issuer certificate specified\n");
 880         return 0;
 881     }
 882     if (*req == NULL)
 883         *req = OCSP_REQUEST_new();
 884     if (*req == NULL)
 885         goto err;
 886     id = OCSP_cert_to_id(cert_id_md, cert, issuer);
 887     if (id == NULL || !sk_OCSP_CERTID_push(ids, id))
 888         goto err;
 889     if (!OCSP_request_add0_id(*req, id))
 890         goto err;
 891     return 1;
 892
 893  err:
 894     BIO_printf(bio_err, "Error Creating OCSP request\n");
 895     return 0;
 896 }
 897
 898 static int add_ocsp_serial(OCSP_REQUEST **req, char *serial,
 899                            const EVP_MD *cert_id_md, X509 *issuer,
 900                            STACK_OF(OCSP_CERTID) *ids)
 901 {
 902     OCSP_CERTID *id;
 903     const X509_NAME *iname;
 904     ASN1_BIT_STRING *ikey;
 905     ASN1_INTEGER *sno;
 906
 907     if (issuer == NULL) {
 908         BIO_printf(bio_err, "No issuer certificate specified\n");
 909         return 0;
 910     }
 911     if (*req == NULL)
 912         *req = OCSP_REQUEST_new();
 913     if (*req == NULL)
 914         goto err;
 915     iname = X509_get_subject_name(issuer);
 916     ikey = X509_get0_pubkey_bitstr(issuer);
 917     sno = s2i_ASN1_INTEGER(NULL, serial);
 918     if (sno == NULL) {
 919         BIO_printf(bio_err, "Error converting serial number %s\n", serial);
 920         return 0;
 921     }
 922     id = OCSP_cert_id_new(cert_id_md, iname, ikey, sno);
 923     ASN1_INTEGER_free(sno);
 924     if (id == NULL || !sk_OCSP_CERTID_push(ids, id))
 925         goto err;
 926     if (!OCSP_request_add0_id(*req, id))
 927         goto err;
 928     return 1;
 929
 930  err:
 931     BIO_printf(bio_err, "Error Creating OCSP request\n");
 932     return 0;
 933 }
 934
 935 static void print_ocsp_summary(BIO *out, OCSP_BASICRESP *bs, OCSP_REQUEST *req,
 936                               STACK_OF(OPENSSL_STRING) *names,
 937                               STACK_OF(OCSP_CERTID) *ids, long nsec,
 938                               long maxage)
 939 {
 940     OCSP_CERTID *id;
 941     const char *name;
 942     int i, status, reason;
 943     ASN1_GENERALIZEDTIME *rev, *thisupd, *nextupd;
 944
 945     if (bs == NULL || req == NULL || !sk_OPENSSL_STRING_num(names)
 946         || !sk_OCSP_CERTID_num(ids))
 947         return;
 948
 949     for (i = 0; i < sk_OCSP_CERTID_num(ids); i++) {
 950         id = sk_OCSP_CERTID_value(ids, i);
 951         name = sk_OPENSSL_STRING_value(names, i);
 952         BIO_printf(out, "%s: ", name);
 953
 954         if (!OCSP_resp_find_status(bs, id, &status, &reason,
 955                                    &rev, &thisupd, &nextupd)) {
 956             BIO_puts(out, "ERROR: No Status found.\n");
 957             continue;
 958         }
 959
 960         /*
 961          * Check validity: if invalid write to output BIO so we know which
 962          * response this refers to.
 963          */
 964         if (!OCSP_check_validity(thisupd, nextupd, nsec, maxage)) {
 965             BIO_puts(out, "WARNING: Status times invalid.\n");
 966             ERR_print_errors(out);
 967         }
 968         BIO_printf(out, "%s\n", OCSP_cert_status_str(status));
 969
 970         BIO_puts(out, "\tThis Update: ");
 971         ASN1_GENERALIZEDTIME_print(out, thisupd);
 972         BIO_puts(out, "\n");
 973
 974         if (nextupd) {
 975             BIO_puts(out, "\tNext Update: ");
 976             ASN1_GENERALIZEDTIME_print(out, nextupd);
 977             BIO_puts(out, "\n");
 978         }
 979
 980         if (status != V_OCSP_CERTSTATUS_REVOKED)
 981             continue;
 982
 983         if (reason != -1)
 984             BIO_printf(out, "\tReason: %s\n", OCSP_crl_reason_str(reason));
 985
 986         BIO_puts(out, "\tRevocation Time: ");
 987         ASN1_GENERALIZEDTIME_print(out, rev);
 988         BIO_puts(out, "\n");
 989     }
 990 }
 991
 992 static void make_ocsp_response(BIO *err, OCSP_RESPONSE **resp, OCSP_REQUEST *req,
 993                               CA_DB *db, STACK_OF(X509) *ca, X509 *rcert,
 994                               EVP_PKEY *rkey, const EVP_MD *rmd,
 995                               STACK_OF(OPENSSL_STRING) *sigopts,
 996                               STACK_OF(X509) *rother, unsigned long flags,
 997                               int nmin, int ndays, int badsig,
 998                               const EVP_MD *resp_md)
 999 {
1000     ASN1_TIME *thisupd = NULL, *nextupd = NULL;
1001     OCSP_CERTID *cid;
1002     OCSP_BASICRESP *bs = NULL;
1003     int i, id_count;
1004     EVP_MD_CTX *mctx = NULL;
1005     EVP_PKEY_CTX *pkctx = NULL;
1006
1007     id_count = OCSP_request_onereq_count(req);
1008
1009     if (id_count <= 0) {
1010         *resp =
1011             OCSP_response_create(OCSP_RESPONSE_STATUS_MALFORMEDREQUEST, NULL);
1012         goto end;
1013     }
1014
1015     bs = OCSP_BASICRESP_new();
1016     thisupd = X509_gmtime_adj(NULL, 0);
1017     if (ndays != -1)
1018         nextupd = X509_time_adj_ex(NULL, ndays, nmin * 60, NULL);
1019
1020     /* Examine each certificate id in the request */
1021     for (i = 0; i < id_count; i++) {
1022         OCSP_ONEREQ *one;
1023         ASN1_INTEGER *serial;
1024         char **inf;
1025         int jj;
1026         int found = 0;
1027         ASN1_OBJECT *cert_id_md_oid;
1028         const EVP_MD *cert_id_md;
1029         OCSP_CERTID *cid_resp_md = NULL;
1030
1031         one = OCSP_request_onereq_get0(req, i);
1032         cid = OCSP_onereq_get0_id(one);
1033
1034         OCSP_id_get0_info(NULL, &cert_id_md_oid, NULL, NULL, cid);
1035
1036         cert_id_md = EVP_get_digestbyobj(cert_id_md_oid);
1037         if (cert_id_md == NULL) {
1038             *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_INTERNALERROR,
1039                                          NULL);
1040             goto end;
1041         }
1042         for (jj = 0; jj < sk_X509_num(ca) && !found; jj++) {
1043             X509 *ca_cert = sk_X509_value(ca, jj);
1044             OCSP_CERTID *ca_id = OCSP_cert_to_id(cert_id_md, NULL, ca_cert);
1045
1046             if (OCSP_id_issuer_cmp(ca_id, cid) == 0) {
1047                 found = 1;
1048                 if (resp_md != NULL)
1049                     cid_resp_md = OCSP_cert_to_id(resp_md, NULL, ca_cert);
1050             }
1051             OCSP_CERTID_free(ca_id);
1052         }
1053         OCSP_id_get0_info(NULL, NULL, NULL, &serial, cid);
1054         inf = lookup_serial(db, serial);
1055
1056         /* at this point, we can have cid be an alias of cid_resp_md */
1057         cid = (cid_resp_md != NULL) ? cid_resp_md : cid;
1058
1059         if (!found) {
1060             OCSP_basic_add1_status(bs, cid,
1061                                    V_OCSP_CERTSTATUS_UNKNOWN,
1062                                    0, NULL, thisupd, nextupd);
1063             continue;
1064         }
1065         if (inf == NULL) {
1066             OCSP_basic_add1_status(bs, cid,
1067                                    V_OCSP_CERTSTATUS_UNKNOWN,
1068                                    0, NULL, thisupd, nextupd);
1069         } else if (inf[DB_type][0] == DB_TYPE_VAL) {
1070             OCSP_basic_add1_status(bs, cid,
1071                                    V_OCSP_CERTSTATUS_GOOD,
1072                                    0, NULL, thisupd, nextupd);
1073         } else if (inf[DB_type][0] == DB_TYPE_REV) {
1074             ASN1_OBJECT *inst = NULL;
1075             ASN1_TIME *revtm = NULL;
1076             ASN1_GENERALIZEDTIME *invtm = NULL;
1077             OCSP_SINGLERESP *single;
1078             int reason = -1;
1079
1080             unpack_revinfo(&revtm, &reason, &inst, &invtm, inf[DB_rev_date]);
1081             single = OCSP_basic_add1_status(bs, cid,
1082                                             V_OCSP_CERTSTATUS_REVOKED,
1083                                             reason, revtm, thisupd, nextupd);
1084             if (invtm != NULL)
1085                 OCSP_SINGLERESP_add1_ext_i2d(single, NID_invalidity_date,
1086                                              invtm, 0, 0);
1087             else if (inst != NULL)
1088                 OCSP_SINGLERESP_add1_ext_i2d(single,
1089                                              NID_hold_instruction_code, inst,
1090                                              0, 0);
1091             ASN1_OBJECT_free(inst);
1092             ASN1_TIME_free(revtm);
1093             ASN1_GENERALIZEDTIME_free(invtm);
1094         }
1095         OCSP_CERTID_free(cid_resp_md);
1096     }
1097
1098     OCSP_copy_nonce(bs, req);
1099
1100     mctx = EVP_MD_CTX_new();
1101     if ( mctx == NULL || !EVP_DigestSignInit(mctx, &pkctx, rmd, NULL, rkey)) {
1102         *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_INTERNALERROR, NULL);
1103         goto end;
1104     }
1105     for (i = 0; i < sk_OPENSSL_STRING_num(sigopts); i++) {
1106         char *sigopt = sk_OPENSSL_STRING_value(sigopts, i);
1107
1108         if (pkey_ctrl_string(pkctx, sigopt) <= 0) {
1109             BIO_printf(err, "parameter error \"%s\"\n", sigopt);
1110             ERR_print_errors(bio_err);
1111             *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_INTERNALERROR,
1112                                          NULL);
1113             goto end;
1114         }
1115     }
1116     if (!OCSP_basic_sign_ctx(bs, rcert, mctx, rother, flags)) {
1117         *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_INTERNALERROR, bs);
1118         goto end;
1119     }
1120
1121     if (badsig) {
1122         const ASN1_OCTET_STRING *sig = OCSP_resp_get0_signature(bs);
1123         corrupt_signature(sig);
1124     }
1125
1126     *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_SUCCESSFUL, bs);
1127
1128  end:
1129     EVP_MD_CTX_free(mctx);
1130     ASN1_TIME_free(thisupd);
1131     ASN1_TIME_free(nextupd);
1132     OCSP_BASICRESP_free(bs);
1133 }
1134
1135 static char **lookup_serial(CA_DB *db, ASN1_INTEGER *ser)
1136 {
1137     int i;
1138     BIGNUM *bn = NULL;
1139     char *itmp, *row[DB_NUMBER], **rrow;
1140     for (i = 0; i < DB_NUMBER; i++)
1141         row[i] = NULL;
1142     bn = ASN1_INTEGER_to_BN(ser, NULL);
1143     OPENSSL_assert(bn);         /* FIXME: should report an error at this
1144                                  * point and abort */
1145     if (BN_is_zero(bn))
1146         itmp = OPENSSL_strdup("00");
1147     else
1148         itmp = BN_bn2hex(bn);
1149     row[DB_serial] = itmp;
1150     BN_free(bn);
1151     rrow = TXT_DB_get_by_index(db->db, DB_serial, row);
1152     OPENSSL_free(itmp);
1153     return rrow;
1154 }
1155
1156 static int do_responder(OCSP_REQUEST **preq, BIO **pcbio, BIO *acbio,
1157                         int timeout)
1158 {
1159 #ifndef OPENSSL_NO_SOCK
1160     return http_server_get_asn1_req(ASN1_ITEM_rptr(OCSP_RESPONSE),
1161                                     (ASN1_VALUE **)preq, NULL, pcbio, acbio,
1162                                     prog, 1 /* accept_get */, timeout);
1163 #else
1164     BIO_printf(bio_err,
1165                "Error getting OCSP request - sockets not supported\n");
1166     *preq = NULL;
1167     return 0;
1168 #endif
1169 }
1170
1171 static int send_ocsp_response(BIO *cbio, const OCSP_RESPONSE *resp)
1172 {
1173 #ifndef OPENSSL_NO_SOCK
1174     return http_server_send_asn1_resp(cbio, "application/ocsp-response",
1175                                       ASN1_ITEM_rptr(OCSP_RESPONSE),
1176                                       (const ASN1_VALUE *)resp);
1177 #else
1178     BIO_printf(bio_err,
1179                "Error sending OCSP response - sockets not supported\n");
1180     return 0;
1181 #endif
1182 }
1183
1184 #ifndef OPENSSL_NO_SOCK
1185 OCSP_RESPONSE *process_responder(OCSP_REQUEST *req,
1186                                  const char *host, const char *path,
1187                                  const char *port, int use_ssl,
1188                                  STACK_OF(CONF_VALUE) *headers,
1189                                  int req_timeout)
1190 {
1191     SSL_CTX *ctx = NULL;
1192     OCSP_RESPONSE *resp = NULL;
1193
1194     if (use_ssl == 1) {
1195         ctx = SSL_CTX_new(TLS_client_method());
1196         if (ctx == NULL) {
1197             BIO_printf(bio_err, "Error creating SSL context.\n");
1198             goto end;
1199         }
1200         SSL_CTX_set_mode(ctx, SSL_MODE_AUTO_RETRY);
1201     }
1202
1203     resp = (OCSP_RESPONSE *)
1204         app_http_post_asn1(host, port, path, NULL, NULL /* no proxy used */,
1205                            ctx, headers, "application/ocsp-request",
1206                            (ASN1_VALUE *)req, ASN1_ITEM_rptr(OCSP_REQUEST),
1207                            req_timeout, ASN1_ITEM_rptr(OCSP_RESPONSE));
1208
1209     if (resp == NULL)
1210         BIO_printf(bio_err, "Error querying OCSP responder\n");
1211
1212  end:
1213     SSL_CTX_free(ctx);
1214     return resp;
1215 }
1216 #endif