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 DEFINE_STACK_OF(X509)
  39 DEFINE_STACK_OF_STRING()
  40
  41 #if defined(OPENSSL_SYS_VXWORKS)
  42 /* not supported */
  43 int setpgid(pid_t pid, pid_t pgid)
  44 {
  45     errno = ENOSYS;
  46     return 0;
  47 }
  48 /* not supported */
  49 pid_t fork(void)
  50 {
  51     errno = ENOSYS;
  52     return (pid_t) -1;
  53 }
  54 #endif
  55 /* Maximum leeway in validity period: default 5 minutes */
  56 #define MAX_VALIDITY_PERIOD    (5 * 60)
  57
  58 static int add_ocsp_cert(OCSP_REQUEST **req, X509 *cert,
  59                          const EVP_MD *cert_id_md, X509 *issuer,
  60                          STACK_OF(OCSP_CERTID) *ids);
  61 static int add_ocsp_serial(OCSP_REQUEST **req, char *serial,
  62                            const EVP_MD *cert_id_md, X509 *issuer,
  63                            STACK_OF(OCSP_CERTID) *ids);
  64 static void print_ocsp_summary(BIO *out, OCSP_BASICRESP *bs, OCSP_REQUEST *req,
  65                               STACK_OF(OPENSSL_STRING) *names,
  66                               STACK_OF(OCSP_CERTID) *ids, long nsec,
  67                               long maxage);
  68 static void make_ocsp_response(BIO *err, OCSP_RESPONSE **resp, OCSP_REQUEST *req,
  69                               CA_DB *db, STACK_OF(X509) *ca, X509 *rcert,
  70                               EVP_PKEY *rkey, const EVP_MD *md,
  71                               STACK_OF(OPENSSL_STRING) *sigopts,
  72                               STACK_OF(X509) *rother, unsigned long flags,
  73                               int nmin, int ndays, int badsig,
  74                               const EVP_MD *resp_md);
  75
  76 static char **lookup_serial(CA_DB *db, ASN1_INTEGER *ser);
  77 static int do_responder(OCSP_REQUEST **preq, BIO **pcbio, BIO *acbio,
  78                         int timeout);
  79 static int send_ocsp_response(BIO *cbio, const OCSP_RESPONSE *resp);
  80 static char *prog;
  81
  82 #ifdef HTTP_DAEMON
  83 static int index_changed(CA_DB *);
  84 #endif
  85
  86 typedef enum OPTION_choice {
  87     OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
  88     OPT_OUTFILE, OPT_TIMEOUT, OPT_URL, OPT_HOST, OPT_PORT,
  89     OPT_IGNORE_ERR, OPT_NOVERIFY, OPT_NONCE, OPT_NO_NONCE,
  90     OPT_RESP_NO_CERTS, OPT_RESP_KEY_ID, OPT_NO_CERTS,
  91     OPT_NO_SIGNATURE_VERIFY, OPT_NO_CERT_VERIFY, OPT_NO_CHAIN,
  92     OPT_NO_CERT_CHECKS, OPT_NO_EXPLICIT, OPT_TRUST_OTHER,
  93     OPT_NO_INTERN, OPT_BADSIG, OPT_TEXT, OPT_REQ_TEXT, OPT_RESP_TEXT,
  94     OPT_REQIN, OPT_RESPIN, OPT_SIGNER, OPT_VAFILE, OPT_SIGN_OTHER,
  95     OPT_VERIFY_OTHER, OPT_CAFILE, OPT_CAPATH, OPT_CASTORE, OPT_NOCAFILE,
  96     OPT_NOCAPATH, OPT_NOCASTORE,
  97     OPT_VALIDITY_PERIOD, OPT_STATUS_AGE, OPT_SIGNKEY, OPT_REQOUT,
  98     OPT_RESPOUT, OPT_PATH, OPT_ISSUER, OPT_CERT, OPT_SERIAL,
  99     OPT_INDEX, OPT_CA, OPT_NMIN, OPT_REQUEST, OPT_NDAYS, OPT_RSIGNER,
 100     OPT_RKEY, OPT_ROTHER, OPT_RMD, OPT_RSIGOPT, OPT_HEADER,
 101     OPT_PASSIN,
 102     OPT_RCID,
 103     OPT_V_ENUM,
 104     OPT_MD,
 105     OPT_MULTI, OPT_PROV_ENUM
 106 } OPTION_CHOICE;
 107
 108 const OPTIONS ocsp_options[] = {
 109     OPT_SECTION("General"),
 110     {"help", OPT_HELP, '-', "Display this summary"},
 111     {"ignore_err", OPT_IGNORE_ERR, '-',
 112      "Ignore error on OCSP request or response and continue running"},
 113     {"CAfile", OPT_CAFILE, '<', "Trusted certificates file"},
 114     {"CApath", OPT_CAPATH, '<', "Trusted certificates directory"},
 115     {"CAstore", OPT_CASTORE, ':', "Trusted certificates store URI"},
 116     {"no-CAfile", OPT_NOCAFILE, '-',
 117      "Do not load the default certificates file"},
 118     {"no-CApath", OPT_NOCAPATH, '-',
 119      "Do not load certificates from the default certificates directory"},
 120     {"no-CAstore", OPT_NOCAPATH, '-',
 121      "Do not load certificates from the default certificates store"},
 122
 123     OPT_SECTION("Responder"),
 124     {"timeout", OPT_TIMEOUT, 'p',
 125      "Connection timeout (in seconds) to the OCSP responder"},
 126     {"resp_no_certs", OPT_RESP_NO_CERTS, '-',
 127      "Don't include any certificates in response"},
 128 #ifdef HTTP_DAEMON
 129     {"multi", OPT_MULTI, 'p', "run multiple responder processes"},
 130 #endif
 131     {"no_certs", OPT_NO_CERTS, '-',
 132      "Don't include any certificates in signed request"},
 133     {"badsig", OPT_BADSIG, '-',
 134         "Corrupt last byte of loaded OSCP response signature (for test)"},
 135     {"CA", OPT_CA, '<', "CA certificate"},
 136     {"nmin", OPT_NMIN, 'p', "Number of minutes before next update"},
 137     {"nrequest", OPT_REQUEST, 'p',
 138      "Number of requests to accept (default unlimited)"},
 139     {"reqin", OPT_REQIN, 's', "File with the DER-encoded request"},
 140     {"signer", OPT_SIGNER, '<', "Certificate to sign OCSP request with"},
 141     {"sign_other", OPT_SIGN_OTHER, '<',
 142      "Additional certificates to include in signed request"},
 143     {"index", OPT_INDEX, '<', "Certificate status index file"},
 144     {"ndays", OPT_NDAYS, 'p', "Number of days before next update"},
 145     {"rsigner", OPT_RSIGNER, '<',
 146      "Responder certificate to sign responses with"},
 147     {"rkey", OPT_RKEY, '<', "Responder key to sign responses with"},
 148     {"passin", OPT_PASSIN, 's', "Responder key pass phrase source"},
 149     {"rother", OPT_ROTHER, '<', "Other certificates to include in response"},
 150     {"rmd", OPT_RMD, 's', "Digest Algorithm to use in signature of OCSP response"},
 151     {"rsigopt", OPT_RSIGOPT, 's', "OCSP response signature parameter in n:v form"},
 152     {"header", OPT_HEADER, 's', "key=value header to add"},
 153     {"rcid", OPT_RCID, 's', "Use specified algorithm for cert id in response"},
 154     {"", OPT_MD, '-', "Any supported digest algorithm (sha1,sha256, ... )"},
 155
 156     OPT_SECTION("Client"),
 157     {"url", OPT_URL, 's', "Responder URL"},
 158     {"host", OPT_HOST, 's', "TCP/IP hostname:port to connect to"},
 159     {"port", OPT_PORT, 'p', "Port to run responder on"},
 160     {"out", OPT_OUTFILE, '>', "Output filename"},
 161     {"noverify", OPT_NOVERIFY, '-', "Don't verify response at all"},
 162     {"nonce", OPT_NONCE, '-', "Add OCSP nonce to request"},
 163     {"no_nonce", OPT_NO_NONCE, '-', "Don't add OCSP nonce to request"},
 164     {"no_signature_verify", OPT_NO_SIGNATURE_VERIFY, '-',
 165      "Don't check signature on response"},
 166     {"resp_key_id", OPT_RESP_KEY_ID, '-',
 167      "Identify response by signing certificate key ID"},
 168     {"no_cert_verify", OPT_NO_CERT_VERIFY, '-',
 169      "Don't check signing certificate"},
 170     {"text", OPT_TEXT, '-', "Print text form of request and response"},
 171     {"req_text", OPT_REQ_TEXT, '-', "Print text form of request"},
 172     {"resp_text", OPT_RESP_TEXT, '-', "Print text form of response"},
 173     {"no_chain", OPT_NO_CHAIN, '-', "Don't chain verify response"},
 174     {"no_cert_checks", OPT_NO_CERT_CHECKS, '-',
 175      "Don't do additional checks on signing certificate"},
 176     {"no_explicit", OPT_NO_EXPLICIT, '-',
 177      "Do not explicitly check the chain, just verify the root"},
 178     {"trust_other", OPT_TRUST_OTHER, '-',
 179      "Don't verify additional certificates"},
 180     {"no_intern", OPT_NO_INTERN, '-',
 181      "Don't search certificates contained in response for signer"},
 182     {"respin", OPT_RESPIN, 's', "File with the DER-encoded response"},
 183     {"VAfile", OPT_VAFILE, '<', "Validator certificates file"},
 184     {"verify_other", OPT_VERIFY_OTHER, '<',
 185      "Additional certificates to search for signer"},
 186     {"path", OPT_PATH, 's', "Path to use in OCSP request"},
 187     {"cert", OPT_CERT, '<', "Certificate to check"},
 188     {"serial", OPT_SERIAL, 's', "Serial number to check"},
 189     {"validity_period", OPT_VALIDITY_PERIOD, 'u',
 190      "Maximum validity discrepancy in seconds"},
 191     {"signkey", OPT_SIGNKEY, 's', "Private key to sign OCSP request with"},
 192     {"reqout", OPT_REQOUT, 's', "Output file for the DER-encoded request"},
 193     {"respout", OPT_RESPOUT, 's', "Output file for the DER-encoded response"},
 194     {"issuer", OPT_ISSUER, '<', "Issuer certificate"},
 195     {"status_age", OPT_STATUS_AGE, 'p', "Maximum status age in seconds"},
 196
 197     OPT_V_OPTIONS,
 198     OPT_PROV_OPTIONS,
 199     {NULL}
 200 };
 201
 202 int ocsp_main(int argc, char **argv)
 203 {
 204     BIO *acbio = NULL, *cbio = NULL, *derbio = NULL, *out = NULL;
 205     const EVP_MD *cert_id_md = NULL, *rsign_md = NULL;
 206     STACK_OF(OPENSSL_STRING) *rsign_sigopts = NULL;
 207     int trailing_md = 0;
 208     CA_DB *rdb = NULL;
 209     EVP_PKEY *key = NULL, *rkey = NULL;
 210     OCSP_BASICRESP *bs = NULL;
 211     OCSP_REQUEST *req = NULL;
 212     OCSP_RESPONSE *resp = NULL;
 213     STACK_OF(CONF_VALUE) *headers = NULL;
 214     STACK_OF(OCSP_CERTID) *ids = NULL;
 215     STACK_OF(OPENSSL_STRING) *reqnames = NULL;
 216     STACK_OF(X509) *sign_other = NULL, *verify_other = NULL, *rother = NULL;
 217     STACK_OF(X509) *issuers = NULL;
 218     X509 *issuer = NULL, *cert = NULL;
 219     STACK_OF(X509) *rca_cert = NULL;
 220     const EVP_MD *resp_certid_md = NULL;
 221     X509 *signer = NULL, *rsigner = NULL;
 222     X509_STORE *store = NULL;
 223     X509_VERIFY_PARAM *vpm = NULL;
 224     const char *CAfile = NULL, *CApath = NULL, *CAstore = NULL;
 225     char *header, *value;
 226     char *host = NULL, *port = NULL, *path = "/", *outfile = NULL;
 227     char *rca_filename = NULL, *reqin = NULL, *respin = NULL;
 228     char *reqout = NULL, *respout = NULL, *ridx_filename = NULL;
 229     char *rsignfile = NULL, *rkeyfile = NULL;
 230     char *passinarg = NULL, *passin = NULL;
 231     char *sign_certfile = NULL, *verify_certfile = NULL, *rcertfile = NULL;
 232     char *signfile = NULL, *keyfile = NULL;
 233     char *thost = NULL, *tport = NULL, *tpath = NULL;
 234     int noCAfile = 0, noCApath = 0, noCAstore = 0;
 235     int accept_count = -1, add_nonce = 1, noverify = 0, use_ssl = -1;
 236     int vpmtouched = 0, badsig = 0, i, ignore_err = 0, nmin = 0, ndays = -1;
 237     int req_text = 0, resp_text = 0, ret = 1;
 238     int req_timeout = -1;
 239     long nsec = MAX_VALIDITY_PERIOD, maxage = -1;
 240     unsigned long sign_flags = 0, verify_flags = 0, rflags = 0;
 241     OPTION_CHOICE o;
 242
 243     reqnames = sk_OPENSSL_STRING_new_null();
 244     if (reqnames == NULL)
 245         goto end;
 246     ids = sk_OCSP_CERTID_new_null();
 247     if (ids == NULL)
 248         goto end;
 249     if ((vpm = X509_VERIFY_PARAM_new()) == NULL)
 250         return 1;
 251
 252     prog = opt_init(argc, argv, ocsp_options);
 253     while ((o = opt_next()) != OPT_EOF) {
 254         switch (o) {
 255         case OPT_EOF:
 256         case OPT_ERR:
 257  opthelp:
 258             BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
 259             goto end;
 260         case OPT_HELP:
 261             ret = 0;
 262             opt_help(ocsp_options);
 263             goto end;
 264         case OPT_OUTFILE:
 265             outfile = opt_arg();
 266             break;
 267         case OPT_TIMEOUT:
 268 #ifndef OPENSSL_NO_SOCK
 269             req_timeout = atoi(opt_arg());
 270 #endif
 271             break;
 272         case OPT_URL:
 273             OPENSSL_free(thost);
 274             OPENSSL_free(tport);
 275             OPENSSL_free(tpath);
 276             thost = tport = tpath = NULL;
 277             if (!OSSL_HTTP_parse_url(opt_arg(),
 278                                      &host, &port, &path, &use_ssl)) {
 279                 BIO_printf(bio_err, "%s Error parsing URL\n", prog);
 280                 goto end;
 281             }
 282             thost = host;
 283             tport = port;
 284             tpath = path;
 285             break;
 286         case OPT_HOST:
 287             host = opt_arg();
 288             break;
 289         case OPT_PORT:
 290             port = opt_arg();
 291             break;
 292         case OPT_IGNORE_ERR:
 293             ignore_err = 1;
 294             break;
 295         case OPT_NOVERIFY:
 296             noverify = 1;
 297             break;
 298         case OPT_NONCE:
 299             add_nonce = 2;
 300             break;
 301         case OPT_NO_NONCE:
 302             add_nonce = 0;
 303             break;
 304         case OPT_RESP_NO_CERTS:
 305             rflags |= OCSP_NOCERTS;
 306             break;
 307         case OPT_RESP_KEY_ID:
 308             rflags |= OCSP_RESPID_KEY;
 309             break;
 310         case OPT_NO_CERTS:
 311             sign_flags |= OCSP_NOCERTS;
 312             break;
 313         case OPT_NO_SIGNATURE_VERIFY:
 314             verify_flags |= OCSP_NOSIGS;
 315             break;
 316         case OPT_NO_CERT_VERIFY:
 317             verify_flags |= OCSP_NOVERIFY;
 318             break;
 319         case OPT_NO_CHAIN:
 320             verify_flags |= OCSP_NOCHAIN;
 321             break;
 322         case OPT_NO_CERT_CHECKS:
 323             verify_flags |= OCSP_NOCHECKS;
 324             break;
 325         case OPT_NO_EXPLICIT:
 326             verify_flags |= OCSP_NOEXPLICIT;
 327             break;
 328         case OPT_TRUST_OTHER:
 329             verify_flags |= OCSP_TRUSTOTHER;
 330             break;
 331         case OPT_NO_INTERN:
 332             verify_flags |= OCSP_NOINTERN;
 333             break;
 334         case OPT_BADSIG:
 335             badsig = 1;
 336             break;
 337         case OPT_TEXT:
 338             req_text = resp_text = 1;
 339             break;
 340         case OPT_REQ_TEXT:
 341             req_text = 1;
 342             break;
 343         case OPT_RESP_TEXT:
 344             resp_text = 1;
 345             break;
 346         case OPT_REQIN:
 347             reqin = opt_arg();
 348             break;
 349         case OPT_RESPIN:
 350             respin = opt_arg();
 351             break;
 352         case OPT_SIGNER:
 353             signfile = opt_arg();
 354             break;
 355         case OPT_VAFILE:
 356             verify_certfile = opt_arg();
 357             verify_flags |= OCSP_TRUSTOTHER;
 358             break;
 359         case OPT_SIGN_OTHER:
 360             sign_certfile = opt_arg();
 361             break;
 362         case OPT_VERIFY_OTHER:
 363             verify_certfile = opt_arg();
 364             break;
 365         case OPT_CAFILE:
 366             CAfile = opt_arg();
 367             break;
 368         case OPT_CAPATH:
 369             CApath = opt_arg();
 370             break;
 371         case OPT_CASTORE:
 372             CAstore = opt_arg();
 373             break;
 374         case OPT_NOCAFILE:
 375             noCAfile = 1;
 376             break;
 377         case OPT_NOCAPATH:
 378             noCApath = 1;
 379             break;
 380         case OPT_NOCASTORE:
 381             noCAstore = 1;
 382             break;
 383         case OPT_V_CASES:
 384             if (!opt_verify(o, vpm))
 385                 goto end;
 386             vpmtouched++;
 387             break;
 388         case OPT_VALIDITY_PERIOD:
 389             opt_long(opt_arg(), &nsec);
 390             break;
 391         case OPT_STATUS_AGE:
 392             opt_long(opt_arg(), &maxage);
 393             break;
 394         case OPT_SIGNKEY:
 395             keyfile = opt_arg();
 396             break;
 397         case OPT_REQOUT:
 398             reqout = opt_arg();
 399             break;
 400         case OPT_RESPOUT:
 401             respout = opt_arg();
 402             break;
 403         case OPT_PATH:
 404             path = opt_arg();
 405             break;
 406         case OPT_ISSUER:
 407             issuer = load_cert(opt_arg(), FORMAT_UNDEF,
 408                                "issuer certificate");
 409             if (issuer == NULL)
 410                 goto end;
 411             if (issuers == NULL) {
 412                 if ((issuers = sk_X509_new_null()) == NULL)
 413                     goto end;
 414             }
 415             if (!sk_X509_push(issuers, issuer))
 416                 goto end;
 417             break;
 418         case OPT_CERT:
 419             X509_free(cert);
 420             cert = load_cert(opt_arg(), FORMAT_UNDEF, "certificate");
 421             if (cert == NULL)
 422                 goto end;
 423             if (cert_id_md == NULL)
 424                 cert_id_md = EVP_sha1();
 425             if (!add_ocsp_cert(&req, cert, cert_id_md, issuer, ids))
 426                 goto end;
 427             if (!sk_OPENSSL_STRING_push(reqnames, opt_arg()))
 428                 goto end;
 429             trailing_md = 0;
 430             break;
 431         case OPT_SERIAL:
 432             if (cert_id_md == NULL)
 433                 cert_id_md = EVP_sha1();
 434             if (!add_ocsp_serial(&req, opt_arg(), cert_id_md, issuer, ids))
 435                 goto end;
 436             if (!sk_OPENSSL_STRING_push(reqnames, opt_arg()))
 437                 goto end;
 438             trailing_md = 0;
 439             break;
 440         case OPT_INDEX:
 441             ridx_filename = opt_arg();
 442             break;
 443         case OPT_CA:
 444             rca_filename = opt_arg();
 445             break;
 446         case OPT_NMIN:
 447             opt_int(opt_arg(), &nmin);
 448             if (ndays == -1)
 449                 ndays = 0;
 450             break;
 451         case OPT_REQUEST:
 452             opt_int(opt_arg(), &accept_count);
 453             break;
 454         case OPT_NDAYS:
 455             ndays = atoi(opt_arg());
 456             break;
 457         case OPT_RSIGNER:
 458             rsignfile = opt_arg();
 459             break;
 460         case OPT_RKEY:
 461             rkeyfile = opt_arg();
 462             break;
 463         case OPT_PASSIN:
 464             passinarg = opt_arg();
 465             break;
 466         case OPT_ROTHER:
 467             rcertfile = opt_arg();
 468             break;
 469         case OPT_RMD:   /* Response MessageDigest */
 470             if (!opt_md(opt_arg(), &rsign_md))
 471                 goto end;
 472             break;
 473         case OPT_RSIGOPT:
 474             if (rsign_sigopts == NULL)
 475                 rsign_sigopts = sk_OPENSSL_STRING_new_null();
 476             if (rsign_sigopts == NULL || !sk_OPENSSL_STRING_push(rsign_sigopts, opt_arg()))
 477                 goto end;
 478             break;
 479         case OPT_HEADER:
 480             header = opt_arg();
 481             value = strchr(header, '=');
 482             if (value == NULL) {
 483                 BIO_printf(bio_err, "Missing = in header key=value\n");
 484                 goto opthelp;
 485             }
 486             *value++ = '\0';
 487             if (!X509V3_add_value(header, value, &headers))
 488                 goto end;
 489             break;
 490         case OPT_RCID:
 491             resp_certid_md = EVP_get_digestbyname(opt_arg());
 492             if (resp_certid_md == NULL)
 493                 goto opthelp;
 494             break;
 495         case OPT_MD:
 496             if (trailing_md) {
 497                 BIO_printf(bio_err,
 498                            "%s: Digest must be before -cert or -serial\n",
 499                            prog);
 500                 goto opthelp;
 501             }
 502             if (!opt_md(opt_unknown(), &cert_id_md))
 503                 goto opthelp;
 504             trailing_md = 1;
 505             break;
 506         case OPT_MULTI:
 507 #ifdef HTTP_DAEMON
 508             multi = atoi(opt_arg());
 509 #endif
 510             break;
 511         case OPT_PROV_CASES:
 512             if (!opt_provider(o))
 513                 goto end;
 514             break;
 515         }
 516     }
 517     if (trailing_md) {
 518         BIO_printf(bio_err, "%s: Digest must be before -cert or -serial\n",
 519                    prog);
 520         goto opthelp;
 521     }
 522     argc = opt_num_rest();
 523     if (argc != 0)
 524         goto opthelp;
 525
 526     /* Have we anything to do? */
 527     if (req == NULL && reqin == NULL
 528         && respin == NULL && !(port != NULL && ridx_filename != NULL))
 529         goto opthelp;
 530
 531     out = bio_open_default(outfile, 'w', FORMAT_TEXT);
 532     if (out == NULL)
 533         goto end;
 534
 535     if (req == NULL && (add_nonce != 2))
 536         add_nonce = 0;
 537
 538     if (req == NULL && reqin != NULL) {
 539         derbio = bio_open_default(reqin, 'r', FORMAT_ASN1);
 540         if (derbio == NULL)
 541             goto end;
 542         req = d2i_OCSP_REQUEST_bio(derbio, NULL);
 543         BIO_free(derbio);
 544         if (req == NULL) {
 545             BIO_printf(bio_err, "Error reading OCSP request\n");
 546             goto end;
 547         }
 548     }
 549
 550     if (req == NULL && port != NULL) {
 551 #ifndef OPENSSL_NO_SOCK
 552         acbio = http_server_init_bio(prog, port);
 553         if (acbio == NULL)
 554             goto end;
 555 #else
 556         BIO_printf(bio_err, "Cannot act as server - sockets not supported\n");
 557         goto end;
 558 #endif
 559     }
 560
 561     if (rsignfile != NULL) {
 562         if (rkeyfile == NULL)
 563             rkeyfile = rsignfile;
 564         rsigner = load_cert(rsignfile, FORMAT_UNDEF,
 565                             "responder certificate");
 566         if (rsigner == NULL) {
 567             BIO_printf(bio_err, "Error loading responder certificate\n");
 568             goto end;
 569         }
 570         if (!load_certs(rca_filename, &rca_cert, FORMAT_PEM,
 571                         NULL, "CA certificate"))
 572             goto end;
 573         if (rcertfile != NULL) {
 574             if (!load_certs(rcertfile, &rother, FORMAT_PEM, NULL,
 575                             "responder other certificates"))
 576                 goto end;
 577         }
 578         if (!app_passwd(passinarg, NULL, &passin, NULL)) {
 579             BIO_printf(bio_err, "Error getting password\n");
 580             goto end;
 581         }
 582         rkey = load_key(rkeyfile, FORMAT_PEM, 0, passin, NULL,
 583                         "responder private key");
 584         if (rkey == NULL)
 585             goto end;
 586     }
 587
 588     if (ridx_filename != NULL
 589         && (rkey == NULL || rsigner == NULL || rca_cert == NULL)) {
 590         BIO_printf(bio_err,
 591                    "Responder mode requires certificate, key, and CA.\n");
 592         goto end;
 593     }
 594
 595     if (ridx_filename != NULL) {
 596         rdb = load_index(ridx_filename, NULL);
 597         if (rdb == NULL || index_index(rdb) <= 0) {
 598             ret = 1;
 599             goto end;
 600         }
 601     }
 602
 603 #ifdef HTTP_DAEMON
 604     if (multi && acbio != NULL)
 605         spawn_loop(prog);
 606     if (acbio != NULL && req_timeout > 0)
 607         signal(SIGALRM, socket_timeout);
 608 #endif
 609
 610     if (acbio != NULL)
 611         log_message(prog, LOG_INFO, "waiting for OCSP client connections...");
 612
 613 redo_accept:
 614
 615     if (acbio != NULL) {
 616 #ifdef HTTP_DAEMON
 617         if (index_changed(rdb)) {
 618             CA_DB *newrdb = load_index(ridx_filename, NULL);
 619
 620             if (newrdb != NULL && index_index(newrdb) > 0) {
 621                 free_index(rdb);
 622                 rdb = newrdb;
 623             } else {
 624                 free_index(newrdb);
 625                 log_message(prog, LOG_ERR, "error reloading updated index: %s",
 626                             ridx_filename);
 627             }
 628         }
 629 #endif
 630
 631         req = NULL;
 632         if (!do_responder(&req, &cbio, acbio, req_timeout))
 633             goto redo_accept;
 634
 635         if (req == NULL) {
 636             resp = OCSP_response_create(OCSP_RESPONSE_STATUS_MALFORMEDREQUEST,
 637                                         NULL);
 638             send_ocsp_response(cbio, resp);
 639             goto done_resp;
 640         }
 641     }
 642
 643     if (req == NULL
 644         && (signfile != NULL || reqout != NULL
 645             || host != NULL || add_nonce || ridx_filename != NULL)) {
 646         BIO_printf(bio_err, "Need an OCSP request for this operation!\n");
 647         goto end;
 648     }
 649
 650     if (req != NULL && add_nonce) {
 651         if (!OCSP_request_add1_nonce(req, NULL, -1))
 652             goto end;
 653     }
 654
 655     if (signfile != NULL) {
 656         if (keyfile == NULL)
 657             keyfile = signfile;
 658         signer = load_cert(signfile, FORMAT_UNDEF, "signer certificate");
 659         if (signer == NULL) {
 660             BIO_printf(bio_err, "Error loading signer certificate\n");
 661             goto end;
 662         }
 663         if (sign_certfile != NULL) {
 664             if (!load_certs(sign_certfile, &sign_other, FORMAT_PEM, NULL,
 665                             "signer certificates"))
 666                 goto end;
 667         }
 668         key = load_key(keyfile, FORMAT_PEM, 0, NULL, NULL,
 669                        "signer private key");
 670         if (key == NULL)
 671             goto end;
 672
 673         if (!OCSP_request_sign
 674             (req, signer, key, NULL, sign_other, sign_flags)) {
 675             BIO_printf(bio_err, "Error signing OCSP request\n");
 676             goto end;
 677         }
 678     }
 679
 680     if (req_text && req != NULL)
 681         OCSP_REQUEST_print(out, req, 0);
 682
 683     if (reqout != NULL) {
 684         derbio = bio_open_default(reqout, 'w', FORMAT_ASN1);
 685         if (derbio == NULL)
 686             goto end;
 687         i2d_OCSP_REQUEST_bio(derbio, req);
 688         BIO_free(derbio);
 689     }
 690
 691     if (rdb != NULL) {
 692         make_ocsp_response(bio_err, &resp, req, rdb, rca_cert, rsigner, rkey,
 693                            rsign_md, rsign_sigopts, rother, rflags, nmin, ndays, badsig,
 694                            resp_certid_md);
 695         if (cbio != NULL)
 696             send_ocsp_response(cbio, resp);
 697     } else if (host != NULL) {
 698 #ifndef OPENSSL_NO_SOCK
 699         resp = process_responder(req, host, path,
 700                                  port, use_ssl, headers, req_timeout);
 701         if (resp == NULL)
 702             goto end;
 703 #else
 704         BIO_printf(bio_err,
 705                    "Error creating connect BIO - sockets not supported\n");
 706         goto end;
 707 #endif
 708     } else if (respin != NULL) {
 709         derbio = bio_open_default(respin, 'r', FORMAT_ASN1);
 710         if (derbio == NULL)
 711             goto end;
 712         resp = d2i_OCSP_RESPONSE_bio(derbio, NULL);
 713         BIO_free(derbio);
 714         if (resp == NULL) {
 715             BIO_printf(bio_err, "Error reading OCSP response\n");
 716             goto end;
 717         }
 718     } else {
 719         ret = 0;
 720         goto end;
 721     }
 722
 723  done_resp:
 724
 725     if (respout != NULL) {
 726         derbio = bio_open_default(respout, 'w', FORMAT_ASN1);
 727         if (derbio == NULL)
 728             goto end;
 729         i2d_OCSP_RESPONSE_bio(derbio, resp);
 730         BIO_free(derbio);
 731     }
 732
 733     i = OCSP_response_status(resp);
 734     if (i != OCSP_RESPONSE_STATUS_SUCCESSFUL) {
 735         BIO_printf(out, "Responder Error: %s (%d)\n",
 736                    OCSP_response_status_str(i), i);
 737         if (!ignore_err)
 738                 goto end;
 739     }
 740
 741     if (resp_text)
 742         OCSP_RESPONSE_print(out, resp, 0);
 743
 744     /* If running as responder don't verify our own response */
 745     if (cbio != NULL) {
 746         /* If not unlimited, see if we took all we should. */
 747         if (accept_count != -1 && --accept_count <= 0) {
 748             ret = 0;
 749             goto end;
 750         }
 751         BIO_free_all(cbio);
 752         cbio = NULL;
 753         OCSP_REQUEST_free(req);
 754         req = NULL;
 755         OCSP_RESPONSE_free(resp);
 756         resp = NULL;
 757         goto redo_accept;
 758     }
 759     if (ridx_filename != NULL) {
 760         ret = 0;
 761         goto end;
 762     }
 763
 764     if (store == NULL) {
 765         store = setup_verify(CAfile, noCAfile, CApath, noCApath,
 766                              CAstore, noCAstore);
 767         if (!store)
 768             goto end;
 769     }
 770     if (vpmtouched)
 771         X509_STORE_set1_param(store, vpm);
 772     if (verify_certfile != NULL) {
 773         if (!load_certs(verify_certfile, &verify_other, FORMAT_PEM, NULL,
 774                         "validator certificate"))
 775             goto end;
 776     }
 777
 778     bs = OCSP_response_get1_basic(resp);
 779     if (bs == NULL) {
 780         BIO_printf(bio_err, "Error parsing response\n");
 781         goto end;
 782     }
 783
 784     ret = 0;
 785
 786     if (!noverify) {
 787         if (req != NULL && ((i = OCSP_check_nonce(req, bs)) <= 0)) {
 788             if (i == -1)
 789                 BIO_printf(bio_err, "WARNING: no nonce in response\n");
 790             else {
 791                 BIO_printf(bio_err, "Nonce Verify error\n");
 792                 ret = 1;
 793                 goto end;
 794             }
 795         }
 796
 797         i = OCSP_basic_verify(bs, verify_other, store, verify_flags);
 798         if (i <= 0 && issuers) {
 799             i = OCSP_basic_verify(bs, issuers, store, OCSP_TRUSTOTHER);
 800             if (i > 0)
 801                 ERR_clear_error();
 802         }
 803         if (i <= 0) {
 804             BIO_printf(bio_err, "Response Verify Failure\n");
 805             ERR_print_errors(bio_err);
 806             ret = 1;
 807         } else {
 808             BIO_printf(bio_err, "Response verify OK\n");
 809         }
 810     }
 811
 812     print_ocsp_summary(out, bs, req, reqnames, ids, nsec, maxage);
 813
 814  end:
 815     ERR_print_errors(bio_err);
 816     X509_free(signer);
 817     X509_STORE_free(store);
 818     X509_VERIFY_PARAM_free(vpm);
 819     sk_OPENSSL_STRING_free(rsign_sigopts);
 820     EVP_PKEY_free(key);
 821     EVP_PKEY_free(rkey);
 822     X509_free(cert);
 823     sk_X509_pop_free(issuers, X509_free);
 824     X509_free(rsigner);
 825     sk_X509_pop_free(rca_cert, X509_free);
 826     free_index(rdb);
 827     BIO_free_all(cbio);
 828     BIO_free_all(acbio);
 829     BIO_free_all(out);
 830     OCSP_REQUEST_free(req);
 831     OCSP_RESPONSE_free(resp);
 832     OCSP_BASICRESP_free(bs);
 833     sk_OPENSSL_STRING_free(reqnames);
 834     sk_OCSP_CERTID_free(ids);
 835     sk_X509_pop_free(sign_other, X509_free);
 836     sk_X509_pop_free(verify_other, X509_free);
 837     sk_CONF_VALUE_pop_free(headers, X509V3_conf_free);
 838     OPENSSL_free(thost);
 839     OPENSSL_free(tport);
 840     OPENSSL_free(tpath);
 841
 842     return ret;
 843 }
 844
 845 #ifdef HTTP_DAEMON
 846
 847 static int index_changed(CA_DB *rdb)
 848 {
 849     struct stat sb;
 850
 851     if (rdb != NULL && stat(rdb->dbfname, &sb) != -1) {
 852         if (rdb->dbst.st_mtime != sb.st_mtime
 853             || rdb->dbst.st_ctime != sb.st_ctime
 854             || rdb->dbst.st_ino != sb.st_ino
 855             || rdb->dbst.st_dev != sb.st_dev) {
 856             syslog(LOG_INFO, "index file changed, reloading");
 857             return 1;
 858         }
 859     }
 860     return 0;
 861 }
 862
 863 #endif
 864
 865 static int add_ocsp_cert(OCSP_REQUEST **req, X509 *cert,
 866                          const EVP_MD *cert_id_md, X509 *issuer,
 867                          STACK_OF(OCSP_CERTID) *ids)
 868 {
 869     OCSP_CERTID *id;
 870
 871     if (issuer == NULL) {
 872         BIO_printf(bio_err, "No issuer certificate specified\n");
 873         return 0;
 874     }
 875     if (*req == NULL)
 876         *req = OCSP_REQUEST_new();
 877     if (*req == NULL)
 878         goto err;
 879     id = OCSP_cert_to_id(cert_id_md, cert, issuer);
 880     if (id == NULL || !sk_OCSP_CERTID_push(ids, id))
 881         goto err;
 882     if (!OCSP_request_add0_id(*req, id))
 883         goto err;
 884     return 1;
 885
 886  err:
 887     BIO_printf(bio_err, "Error Creating OCSP request\n");
 888     return 0;
 889 }
 890
 891 static int add_ocsp_serial(OCSP_REQUEST **req, char *serial,
 892                            const EVP_MD *cert_id_md, X509 *issuer,
 893                            STACK_OF(OCSP_CERTID) *ids)
 894 {
 895     OCSP_CERTID *id;
 896     const X509_NAME *iname;
 897     ASN1_BIT_STRING *ikey;
 898     ASN1_INTEGER *sno;
 899
 900     if (issuer == NULL) {
 901         BIO_printf(bio_err, "No issuer certificate specified\n");
 902         return 0;
 903     }
 904     if (*req == NULL)
 905         *req = OCSP_REQUEST_new();
 906     if (*req == NULL)
 907         goto err;
 908     iname = X509_get_subject_name(issuer);
 909     ikey = X509_get0_pubkey_bitstr(issuer);
 910     sno = s2i_ASN1_INTEGER(NULL, serial);
 911     if (sno == NULL) {
 912         BIO_printf(bio_err, "Error converting serial number %s\n", serial);
 913         return 0;
 914     }
 915     id = OCSP_cert_id_new(cert_id_md, iname, ikey, sno);
 916     ASN1_INTEGER_free(sno);
 917     if (id == NULL || !sk_OCSP_CERTID_push(ids, id))
 918         goto err;
 919     if (!OCSP_request_add0_id(*req, id))
 920         goto err;
 921     return 1;
 922
 923  err:
 924     BIO_printf(bio_err, "Error Creating OCSP request\n");
 925     return 0;
 926 }
 927
 928 static void print_ocsp_summary(BIO *out, OCSP_BASICRESP *bs, OCSP_REQUEST *req,
 929                               STACK_OF(OPENSSL_STRING) *names,
 930                               STACK_OF(OCSP_CERTID) *ids, long nsec,
 931                               long maxage)
 932 {
 933     OCSP_CERTID *id;
 934     const char *name;
 935     int i, status, reason;
 936     ASN1_GENERALIZEDTIME *rev, *thisupd, *nextupd;
 937
 938     if (bs == NULL || req == NULL || !sk_OPENSSL_STRING_num(names)
 939         || !sk_OCSP_CERTID_num(ids))
 940         return;
 941
 942     for (i = 0; i < sk_OCSP_CERTID_num(ids); i++) {
 943         id = sk_OCSP_CERTID_value(ids, i);
 944         name = sk_OPENSSL_STRING_value(names, i);
 945         BIO_printf(out, "%s: ", name);
 946
 947         if (!OCSP_resp_find_status(bs, id, &status, &reason,
 948                                    &rev, &thisupd, &nextupd)) {
 949             BIO_puts(out, "ERROR: No Status found.\n");
 950             continue;
 951         }
 952
 953         /*
 954          * Check validity: if invalid write to output BIO so we know which
 955          * response this refers to.
 956          */
 957         if (!OCSP_check_validity(thisupd, nextupd, nsec, maxage)) {
 958             BIO_puts(out, "WARNING: Status times invalid.\n");
 959             ERR_print_errors(out);
 960         }
 961         BIO_printf(out, "%s\n", OCSP_cert_status_str(status));
 962
 963         BIO_puts(out, "\tThis Update: ");
 964         ASN1_GENERALIZEDTIME_print(out, thisupd);
 965         BIO_puts(out, "\n");
 966
 967         if (nextupd) {
 968             BIO_puts(out, "\tNext Update: ");
 969             ASN1_GENERALIZEDTIME_print(out, nextupd);
 970             BIO_puts(out, "\n");
 971         }
 972
 973         if (status != V_OCSP_CERTSTATUS_REVOKED)
 974             continue;
 975
 976         if (reason != -1)
 977             BIO_printf(out, "\tReason: %s\n", OCSP_crl_reason_str(reason));
 978
 979         BIO_puts(out, "\tRevocation Time: ");
 980         ASN1_GENERALIZEDTIME_print(out, rev);
 981         BIO_puts(out, "\n");
 982     }
 983 }
 984
 985 static void make_ocsp_response(BIO *err, OCSP_RESPONSE **resp, OCSP_REQUEST *req,
 986                               CA_DB *db, STACK_OF(X509) *ca, X509 *rcert,
 987                               EVP_PKEY *rkey, const EVP_MD *rmd,
 988                               STACK_OF(OPENSSL_STRING) *sigopts,
 989                               STACK_OF(X509) *rother, unsigned long flags,
 990                               int nmin, int ndays, int badsig,
 991                               const EVP_MD *resp_md)
 992 {
 993     ASN1_TIME *thisupd = NULL, *nextupd = NULL;
 994     OCSP_CERTID *cid;
 995     OCSP_BASICRESP *bs = NULL;
 996     int i, id_count;
 997     EVP_MD_CTX *mctx = NULL;
 998     EVP_PKEY_CTX *pkctx = NULL;
 999
1000     id_count = OCSP_request_onereq_count(req);
1001
1002     if (id_count <= 0) {
1003         *resp =
1004             OCSP_response_create(OCSP_RESPONSE_STATUS_MALFORMEDREQUEST, NULL);
1005         goto end;
1006     }
1007
1008     bs = OCSP_BASICRESP_new();
1009     thisupd = X509_gmtime_adj(NULL, 0);
1010     if (ndays != -1)
1011         nextupd = X509_time_adj_ex(NULL, ndays, nmin * 60, NULL);
1012
1013     /* Examine each certificate id in the request */
1014     for (i = 0; i < id_count; i++) {
1015         OCSP_ONEREQ *one;
1016         ASN1_INTEGER *serial;
1017         char **inf;
1018         int jj;
1019         int found = 0;
1020         ASN1_OBJECT *cert_id_md_oid;
1021         const EVP_MD *cert_id_md;
1022         OCSP_CERTID *cid_resp_md = NULL;
1023
1024         one = OCSP_request_onereq_get0(req, i);
1025         cid = OCSP_onereq_get0_id(one);
1026
1027         OCSP_id_get0_info(NULL, &cert_id_md_oid, NULL, NULL, cid);
1028
1029         cert_id_md = EVP_get_digestbyobj(cert_id_md_oid);
1030         if (cert_id_md == NULL) {
1031             *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_INTERNALERROR,
1032                                          NULL);
1033             goto end;
1034         }
1035         for (jj = 0; jj < sk_X509_num(ca) && !found; jj++) {
1036             X509 *ca_cert = sk_X509_value(ca, jj);
1037             OCSP_CERTID *ca_id = OCSP_cert_to_id(cert_id_md, NULL, ca_cert);
1038
1039             if (OCSP_id_issuer_cmp(ca_id, cid) == 0) {
1040                 found = 1;
1041                 if (resp_md != NULL)
1042                     cid_resp_md = OCSP_cert_to_id(resp_md, NULL, ca_cert);
1043             }
1044             OCSP_CERTID_free(ca_id);
1045         }
1046         OCSP_id_get0_info(NULL, NULL, NULL, &serial, cid);
1047         inf = lookup_serial(db, serial);
1048
1049         /* at this point, we can have cid be an alias of cid_resp_md */
1050         cid = (cid_resp_md != NULL) ? cid_resp_md : cid;
1051
1052         if (!found) {
1053             OCSP_basic_add1_status(bs, cid,
1054                                    V_OCSP_CERTSTATUS_UNKNOWN,
1055                                    0, NULL, thisupd, nextupd);
1056             continue;
1057         }
1058         if (inf == NULL) {
1059             OCSP_basic_add1_status(bs, cid,
1060                                    V_OCSP_CERTSTATUS_UNKNOWN,
1061                                    0, NULL, thisupd, nextupd);
1062         } else if (inf[DB_type][0] == DB_TYPE_VAL) {
1063             OCSP_basic_add1_status(bs, cid,
1064                                    V_OCSP_CERTSTATUS_GOOD,
1065                                    0, NULL, thisupd, nextupd);
1066         } else if (inf[DB_type][0] == DB_TYPE_REV) {
1067             ASN1_OBJECT *inst = NULL;
1068             ASN1_TIME *revtm = NULL;
1069             ASN1_GENERALIZEDTIME *invtm = NULL;
1070             OCSP_SINGLERESP *single;
1071             int reason = -1;
1072
1073             unpack_revinfo(&revtm, &reason, &inst, &invtm, inf[DB_rev_date]);
1074             single = OCSP_basic_add1_status(bs, cid,
1075                                             V_OCSP_CERTSTATUS_REVOKED,
1076                                             reason, revtm, thisupd, nextupd);
1077             if (invtm != NULL)
1078                 OCSP_SINGLERESP_add1_ext_i2d(single, NID_invalidity_date,
1079                                              invtm, 0, 0);
1080             else if (inst != NULL)
1081                 OCSP_SINGLERESP_add1_ext_i2d(single,
1082                                              NID_hold_instruction_code, inst,
1083                                              0, 0);
1084             ASN1_OBJECT_free(inst);
1085             ASN1_TIME_free(revtm);
1086             ASN1_GENERALIZEDTIME_free(invtm);
1087         }
1088         OCSP_CERTID_free(cid_resp_md);
1089     }
1090
1091     OCSP_copy_nonce(bs, req);
1092
1093     mctx = EVP_MD_CTX_new();
1094     if ( mctx == NULL || !EVP_DigestSignInit(mctx, &pkctx, rmd, NULL, rkey)) {
1095         *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_INTERNALERROR, NULL);
1096         goto end;
1097     }
1098     for (i = 0; i < sk_OPENSSL_STRING_num(sigopts); i++) {
1099         char *sigopt = sk_OPENSSL_STRING_value(sigopts, i);
1100
1101         if (pkey_ctrl_string(pkctx, sigopt) <= 0) {
1102             BIO_printf(err, "parameter error \"%s\"\n", sigopt);
1103             ERR_print_errors(bio_err);
1104             *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_INTERNALERROR,
1105                                          NULL);
1106             goto end;
1107         }
1108     }
1109     if (!OCSP_basic_sign_ctx(bs, rcert, mctx, rother, flags)) {
1110         *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_INTERNALERROR, bs);
1111         goto end;
1112     }
1113
1114     if (badsig) {
1115         const ASN1_OCTET_STRING *sig = OCSP_resp_get0_signature(bs);
1116         corrupt_signature(sig);
1117     }
1118
1119     *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_SUCCESSFUL, bs);
1120
1121  end:
1122     EVP_MD_CTX_free(mctx);
1123     ASN1_TIME_free(thisupd);
1124     ASN1_TIME_free(nextupd);
1125     OCSP_BASICRESP_free(bs);
1126 }
1127
1128 static char **lookup_serial(CA_DB *db, ASN1_INTEGER *ser)
1129 {
1130     int i;
1131     BIGNUM *bn = NULL;
1132     char *itmp, *row[DB_NUMBER], **rrow;
1133     for (i = 0; i < DB_NUMBER; i++)
1134         row[i] = NULL;
1135     bn = ASN1_INTEGER_to_BN(ser, NULL);
1136     OPENSSL_assert(bn);         /* FIXME: should report an error at this
1137                                  * point and abort */
1138     if (BN_is_zero(bn))
1139         itmp = OPENSSL_strdup("00");
1140     else
1141         itmp = BN_bn2hex(bn);
1142     row[DB_serial] = itmp;
1143     BN_free(bn);
1144     rrow = TXT_DB_get_by_index(db->db, DB_serial, row);
1145     OPENSSL_free(itmp);
1146     return rrow;
1147 }
1148
1149 static int do_responder(OCSP_REQUEST **preq, BIO **pcbio, BIO *acbio,
1150                         int timeout)
1151 {
1152 #ifndef OPENSSL_NO_SOCK
1153     return http_server_get_asn1_req(ASN1_ITEM_rptr(OCSP_RESPONSE),
1154                                     (ASN1_VALUE **)preq, pcbio, acbio,
1155                                     prog, 1 /* accept_get */, timeout);
1156 #else
1157     BIO_printf(bio_err,
1158                "Error getting OCSP request - sockets not supported\n");
1159     *preq = NULL;
1160     return 0;
1161 #endif
1162 }
1163
1164 static int send_ocsp_response(BIO *cbio, const OCSP_RESPONSE *resp)
1165 {
1166 #ifndef OPENSSL_NO_SOCK
1167     return http_server_send_asn1_resp(cbio, "application/ocsp-response",
1168                                       ASN1_ITEM_rptr(OCSP_RESPONSE),
1169                                       (const ASN1_VALUE *)resp);
1170 #else
1171     BIO_printf(bio_err,
1172                "Error sending OCSP response - sockets not supported\n");
1173     return 0;
1174 #endif
1175 }
1176
1177 #ifndef OPENSSL_NO_SOCK
1178 OCSP_RESPONSE *process_responder(OCSP_REQUEST *req,
1179                                  const char *host, const char *path,
1180                                  const char *port, int use_ssl,
1181                                  STACK_OF(CONF_VALUE) *headers,
1182                                  int req_timeout)
1183 {
1184     SSL_CTX *ctx = NULL;
1185     OCSP_RESPONSE *resp = NULL;
1186
1187     if (use_ssl == 1) {
1188         ctx = SSL_CTX_new(TLS_client_method());
1189         if (ctx == NULL) {
1190             BIO_printf(bio_err, "Error creating SSL context.\n");
1191             goto end;
1192         }
1193         SSL_CTX_set_mode(ctx, SSL_MODE_AUTO_RETRY);
1194     }
1195
1196     resp = (OCSP_RESPONSE *)
1197         app_http_post_asn1(host, port, path, NULL, NULL /* no proxy used */,
1198                            ctx, headers, "application/ocsp-request",
1199                            (ASN1_VALUE *)req, ASN1_ITEM_rptr(OCSP_REQUEST),
1200                            req_timeout, ASN1_ITEM_rptr(OCSP_RESPONSE));
1201
1202     if (resp == NULL)
1203         BIO_printf(bio_err, "Error querying OCSP responder\n");
1204
1205  end:
1206     SSL_CTX_free(ctx);
1207     return resp;
1208 }
1209 #endif