apps/ocsp.c

   1 /*
   2  * Copyright 2001-2017 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the OpenSSL license (the "License").  You may not use
   5  * this file except in compliance with the License.  You can obtain a copy
   6  * in the file LICENSE in the source distribution or at
   7  * https://www.openssl.org/source/license.html
   8  */
   9
  10 #include <openssl/opensslconf.h>
  11
  12 #ifdef OPENSSL_NO_OCSP
  13 NON_EMPTY_TRANSLATION_UNIT
  14 #else
  15 # ifdef OPENSSL_SYS_VMS
  16 #  define _XOPEN_SOURCE_EXTENDED/* So fd_set and friends get properly defined
  17                                  * on OpenVMS */
  18 # endif
  19
  20 # include <stdio.h>
  21 # include <stdlib.h>
  22 # include <string.h>
  23 # include <time.h>
  24 # include <ctype.h>
  25
  26 /* Needs to be included before the openssl headers */
  27 # include "apps.h"
  28 # include <openssl/e_os2.h>
  29 # include <openssl/crypto.h>
  30 # include <openssl/err.h>
  31 # include <openssl/ssl.h>
  32 # include <openssl/evp.h>
  33 # include <openssl/bn.h>
  34 # include <openssl/x509v3.h>
  35
  36 # if defined(NETWARE_CLIB)
  37 #  ifdef NETWARE_BSDSOCK
  38 #   include <sys/socket.h>
  39 #   include <sys/bsdskt.h>
  40 #  else
  41 #   include <novsock2.h>
  42 #  endif
  43 # elif defined(NETWARE_LIBC)
  44 #  ifdef NETWARE_BSDSOCK
  45 #   include <sys/select.h>
  46 #  else
  47 #   include <novsock2.h>
  48 #  endif
  49 # endif
  50
  51 /* Maximum leeway in validity period: default 5 minutes */
  52 # define MAX_VALIDITY_PERIOD    (5 * 60)
  53
  54 static int add_ocsp_cert(OCSP_REQUEST **req, X509 *cert,
  55                          const EVP_MD *cert_id_md, X509 *issuer,
  56                          STACK_OF(OCSP_CERTID) *ids);
  57 static int add_ocsp_serial(OCSP_REQUEST **req, char *serial,
  58                            const EVP_MD *cert_id_md, X509 *issuer,
  59                            STACK_OF(OCSP_CERTID) *ids);
  60 static void print_ocsp_summary(BIO *out, OCSP_BASICRESP *bs, OCSP_REQUEST *req,
  61                               STACK_OF(OPENSSL_STRING) *names,
  62                               STACK_OF(OCSP_CERTID) *ids, long nsec,
  63                               long maxage);
  64 static void make_ocsp_response(OCSP_RESPONSE **resp, OCSP_REQUEST *req,
  65                               CA_DB *db, STACK_OF(X509) *ca, X509 *rcert,
  66                               EVP_PKEY *rkey, const EVP_MD *md,
  67                               STACK_OF(X509) *rother, unsigned long flags,
  68                               int nmin, int ndays, int badsig);
  69
  70 static char **lookup_serial(CA_DB *db, ASN1_INTEGER *ser);
  71 static BIO *init_responder(const char *port);
  72 static int do_responder(OCSP_REQUEST **preq, BIO **pcbio, BIO *acbio);
  73 static int send_ocsp_response(BIO *cbio, OCSP_RESPONSE *resp);
  74
  75 # ifndef OPENSSL_NO_SOCK
  76 static OCSP_RESPONSE *query_responder(BIO *cbio, const char *host,
  77                                       const char *path,
  78                                       const STACK_OF(CONF_VALUE) *headers,
  79                                       OCSP_REQUEST *req, int req_timeout);
  80 # endif
  81
  82 typedef enum OPTION_choice {
  83     OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
  84     OPT_OUTFILE, OPT_TIMEOUT, OPT_URL, OPT_HOST, OPT_PORT,
  85     OPT_IGNORE_ERR, OPT_NOVERIFY, OPT_NONCE, OPT_NO_NONCE,
  86     OPT_RESP_NO_CERTS, OPT_RESP_KEY_ID, OPT_NO_CERTS,
  87     OPT_NO_SIGNATURE_VERIFY, OPT_NO_CERT_VERIFY, OPT_NO_CHAIN,
  88     OPT_NO_CERT_CHECKS, OPT_NO_EXPLICIT, OPT_TRUST_OTHER,
  89     OPT_NO_INTERN, OPT_BADSIG, OPT_TEXT, OPT_REQ_TEXT, OPT_RESP_TEXT,
  90     OPT_REQIN, OPT_RESPIN, OPT_SIGNER, OPT_VAFILE, OPT_SIGN_OTHER,
  91     OPT_VERIFY_OTHER, OPT_CAFILE, OPT_CAPATH, OPT_NOCAFILE, OPT_NOCAPATH,
  92     OPT_VALIDITY_PERIOD, OPT_STATUS_AGE, OPT_SIGNKEY, OPT_REQOUT,
  93     OPT_RESPOUT, OPT_PATH, OPT_ISSUER, OPT_CERT, OPT_SERIAL,
  94     OPT_INDEX, OPT_CA, OPT_NMIN, OPT_REQUEST, OPT_NDAYS, OPT_RSIGNER,
  95     OPT_RKEY, OPT_ROTHER, OPT_RMD, OPT_HEADER,
  96     OPT_V_ENUM,
  97     OPT_MD
  98 } OPTION_CHOICE;
  99
 100 const OPTIONS ocsp_options[] = {
 101     {"help", OPT_HELP, '-', "Display this summary"},
 102     {"out", OPT_OUTFILE, '>', "Output filename"},
 103     {"timeout", OPT_TIMEOUT, 'p',
 104      "Connection timeout (in seconds) to the OCSP responder"},
 105     {"url", OPT_URL, 's', "Responder URL"},
 106     {"host", OPT_HOST, 's', "TCP/IP hostname:port to connect to"},
 107     {"port", OPT_PORT, 'p', "Port to run responder on"},
 108     {"ignore_err", OPT_IGNORE_ERR, '-',
 109      "Ignore error on OCSP request or response and continue running"},
 110     {"noverify", OPT_NOVERIFY, '-', "Don't verify response at all"},
 111     {"nonce", OPT_NONCE, '-', "Add OCSP nonce to request"},
 112     {"no_nonce", OPT_NO_NONCE, '-', "Don't add OCSP nonce to request"},
 113     {"resp_no_certs", OPT_RESP_NO_CERTS, '-',
 114      "Don't include any certificates in response"},
 115     {"resp_key_id", OPT_RESP_KEY_ID, '-',
 116      "Identify response by signing certificate key ID"},
 117     {"no_certs", OPT_NO_CERTS, '-',
 118      "Don't include any certificates in signed request"},
 119     {"no_signature_verify", OPT_NO_SIGNATURE_VERIFY, '-',
 120      "Don't check signature on response"},
 121     {"no_cert_verify", OPT_NO_CERT_VERIFY, '-',
 122      "Don't check signing certificate"},
 123     {"no_chain", OPT_NO_CHAIN, '-', "Don't chain verify response"},
 124     {"no_cert_checks", OPT_NO_CERT_CHECKS, '-',
 125      "Don't do additional checks on signing certificate"},
 126     {"no_explicit", OPT_NO_EXPLICIT, '-',
 127      "Do not explicitly check the chain, just verify the root"},
 128     {"trust_other", OPT_TRUST_OTHER, '-',
 129      "Don't verify additional certificates"},
 130     {"no_intern", OPT_NO_INTERN, '-',
 131      "Don't search certificates contained in response for signer"},
 132     {"badsig", OPT_BADSIG, '-',
 133         "Corrupt last byte of loaded OSCP response signature (for test)"},
 134     {"text", OPT_TEXT, '-', "Print text form of request and response"},
 135     {"req_text", OPT_REQ_TEXT, '-', "Print text form of request"},
 136     {"resp_text", OPT_RESP_TEXT, '-', "Print text form of response"},
 137     {"reqin", OPT_REQIN, 's', "File with the DER-encoded request"},
 138     {"respin", OPT_RESPIN, 's', "File with the DER-encoded response"},
 139     {"signer", OPT_SIGNER, '<', "Certificate to sign OCSP request with"},
 140     {"VAfile", OPT_VAFILE, '<', "Validator certificates file"},
 141     {"sign_other", OPT_SIGN_OTHER, '<',
 142      "Additional certificates to include in signed request"},
 143     {"verify_other", OPT_VERIFY_OTHER, '<',
 144      "Additional certificates to search for signer"},
 145     {"CAfile", OPT_CAFILE, '<', "Trusted certificates file"},
 146     {"CApath", OPT_CAPATH, '<', "Trusted certificates directory"},
 147     {"no-CAfile", OPT_NOCAFILE, '-',
 148      "Do not load the default certificates file"},
 149     {"no-CApath", OPT_NOCAPATH, '-',
 150      "Do not load certificates from the default certificates directory"},
 151     {"validity_period", OPT_VALIDITY_PERIOD, 'u',
 152      "Maximum validity discrepancy in seconds"},
 153     {"status_age", OPT_STATUS_AGE, 'p', "Maximum status age in seconds"},
 154     {"signkey", OPT_SIGNKEY, 's', "Private key to sign OCSP request with"},
 155     {"reqout", OPT_REQOUT, 's', "Output file for the DER-encoded request"},
 156     {"respout", OPT_RESPOUT, 's', "Output file for the DER-encoded response"},
 157     {"path", OPT_PATH, 's', "Path to use in OCSP request"},
 158     {"issuer", OPT_ISSUER, '<', "Issuer certificate"},
 159     {"cert", OPT_CERT, '<', "Certificate to check"},
 160     {"serial", OPT_SERIAL, 's', "Serial number to check"},
 161     {"index", OPT_INDEX, '<', "Certificate status index file"},
 162     {"CA", OPT_CA, '<', "CA certificate"},
 163     {"nmin", OPT_NMIN, 'p', "Number of minutes before next update"},
 164     {"nrequest", OPT_REQUEST, 'p',
 165      "Number of requests to accept (default unlimited)"},
 166     {"ndays", OPT_NDAYS, 'p', "Number of days before next update"},
 167     {"rsigner", OPT_RSIGNER, '<',
 168      "Responder certificate to sign responses with"},
 169     {"rkey", OPT_RKEY, '<', "Responder key to sign responses with"},
 170     {"rother", OPT_ROTHER, '<', "Other certificates to include in response"},
 171     {"rmd", OPT_RMD, 's', "Digest Algorithm to use in signature of OCSP response"},
 172     {"header", OPT_HEADER, 's', "key=value header to add"},
 173     {"", OPT_MD, '-', "Any supported digest algorithm (sha1,sha256, ... )"},
 174     OPT_V_OPTIONS,
 175     {NULL}
 176 };
 177
 178 int ocsp_main(int argc, char **argv)
 179 {
 180     BIO *acbio = NULL, *cbio = NULL, *derbio = NULL, *out = NULL;
 181     const EVP_MD *cert_id_md = NULL, *rsign_md = NULL;
 182     int trailing_md = 0;
 183     CA_DB *rdb = NULL;
 184     EVP_PKEY *key = NULL, *rkey = NULL;
 185     OCSP_BASICRESP *bs = NULL;
 186     OCSP_REQUEST *req = NULL;
 187     OCSP_RESPONSE *resp = NULL;
 188     STACK_OF(CONF_VALUE) *headers = NULL;
 189     STACK_OF(OCSP_CERTID) *ids = NULL;
 190     STACK_OF(OPENSSL_STRING) *reqnames = NULL;
 191     STACK_OF(X509) *sign_other = NULL, *verify_other = NULL, *rother = NULL;
 192     STACK_OF(X509) *issuers = NULL;
 193     X509 *issuer = NULL, *cert = NULL;
 194     STACK_OF(X509) *rca_cert = NULL;
 195     X509 *signer = NULL, *rsigner = NULL;
 196     X509_STORE *store = NULL;
 197     X509_VERIFY_PARAM *vpm = NULL;
 198     const char *CAfile = NULL, *CApath = NULL;
 199     char *header, *value;
 200     char *host = NULL, *port = NULL, *path = "/", *outfile = NULL;
 201     char *rca_filename = NULL, *reqin = NULL, *respin = NULL;
 202     char *reqout = NULL, *respout = NULL, *ridx_filename = NULL;
 203     char *rsignfile = NULL, *rkeyfile = NULL;
 204     char *sign_certfile = NULL, *verify_certfile = NULL, *rcertfile = NULL;
 205     char *signfile = NULL, *keyfile = NULL;
 206     char *thost = NULL, *tport = NULL, *tpath = NULL;
 207     int noCAfile = 0, noCApath = 0;
 208     int accept_count = -1, add_nonce = 1, noverify = 0, use_ssl = -1;
 209     int vpmtouched = 0, badsig = 0, i, ignore_err = 0, nmin = 0, ndays = -1;
 210     int req_text = 0, resp_text = 0, ret = 1;
 211 #ifndef OPENSSL_NO_SOCK
 212     int req_timeout = -1;
 213 #endif
 214     long nsec = MAX_VALIDITY_PERIOD, maxage = -1;
 215     unsigned long sign_flags = 0, verify_flags = 0, rflags = 0;
 216     OPTION_CHOICE o;
 217     char *prog;
 218
 219     reqnames = sk_OPENSSL_STRING_new_null();
 220     if (reqnames == NULL)
 221         goto end;
 222     ids = sk_OCSP_CERTID_new_null();
 223     if (ids == NULL)
 224         goto end;
 225     if ((vpm = X509_VERIFY_PARAM_new()) == NULL)
 226         return 1;
 227
 228     prog = opt_init(argc, argv, ocsp_options);
 229     while ((o = opt_next()) != OPT_EOF) {
 230         switch (o) {
 231         case OPT_EOF:
 232         case OPT_ERR:
 233  opthelp:
 234             BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
 235             goto end;
 236         case OPT_HELP:
 237             ret = 0;
 238             opt_help(ocsp_options);
 239             goto end;
 240         case OPT_OUTFILE:
 241             outfile = opt_arg();
 242             break;
 243         case OPT_TIMEOUT:
 244 #ifndef OPENSSL_NO_SOCK
 245             req_timeout = atoi(opt_arg());
 246 #endif
 247             break;
 248         case OPT_URL:
 249             OPENSSL_free(thost);
 250             OPENSSL_free(tport);
 251             OPENSSL_free(tpath);
 252             thost = tport = tpath = NULL;
 253             if (!OCSP_parse_url(opt_arg(), &host, &port, &path, &use_ssl)) {
 254                 BIO_printf(bio_err, "%s Error parsing URL\n", prog);
 255                 goto end;
 256             }
 257             thost = host;
 258             tport = port;
 259             tpath = path;
 260             break;
 261         case OPT_HOST:
 262             host = opt_arg();
 263             break;
 264         case OPT_PORT:
 265             port = opt_arg();
 266             break;
 267         case OPT_IGNORE_ERR:
 268             ignore_err = 1;
 269             break;
 270         case OPT_NOVERIFY:
 271             noverify = 1;
 272             break;
 273         case OPT_NONCE:
 274             add_nonce = 2;
 275             break;
 276         case OPT_NO_NONCE:
 277             add_nonce = 0;
 278             break;
 279         case OPT_RESP_NO_CERTS:
 280             rflags |= OCSP_NOCERTS;
 281             break;
 282         case OPT_RESP_KEY_ID:
 283             rflags |= OCSP_RESPID_KEY;
 284             break;
 285         case OPT_NO_CERTS:
 286             sign_flags |= OCSP_NOCERTS;
 287             break;
 288         case OPT_NO_SIGNATURE_VERIFY:
 289             verify_flags |= OCSP_NOSIGS;
 290             break;
 291         case OPT_NO_CERT_VERIFY:
 292             verify_flags |= OCSP_NOVERIFY;
 293             break;
 294         case OPT_NO_CHAIN:
 295             verify_flags |= OCSP_NOCHAIN;
 296             break;
 297         case OPT_NO_CERT_CHECKS:
 298             verify_flags |= OCSP_NOCHECKS;
 299             break;
 300         case OPT_NO_EXPLICIT:
 301             verify_flags |= OCSP_NOEXPLICIT;
 302             break;
 303         case OPT_TRUST_OTHER:
 304             verify_flags |= OCSP_TRUSTOTHER;
 305             break;
 306         case OPT_NO_INTERN:
 307             verify_flags |= OCSP_NOINTERN;
 308             break;
 309         case OPT_BADSIG:
 310             badsig = 1;
 311             break;
 312         case OPT_TEXT:
 313             req_text = resp_text = 1;
 314             break;
 315         case OPT_REQ_TEXT:
 316             req_text = 1;
 317             break;
 318         case OPT_RESP_TEXT:
 319             resp_text = 1;
 320             break;
 321         case OPT_REQIN:
 322             reqin = opt_arg();
 323             break;
 324         case OPT_RESPIN:
 325             respin = opt_arg();
 326             break;
 327         case OPT_SIGNER:
 328             signfile = opt_arg();
 329             break;
 330         case OPT_VAFILE:
 331             verify_certfile = opt_arg();
 332             verify_flags |= OCSP_TRUSTOTHER;
 333             break;
 334         case OPT_SIGN_OTHER:
 335             sign_certfile = opt_arg();
 336             break;
 337         case OPT_VERIFY_OTHER:
 338             verify_certfile = opt_arg();
 339             break;
 340         case OPT_CAFILE:
 341             CAfile = opt_arg();
 342             break;
 343         case OPT_CAPATH:
 344             CApath = opt_arg();
 345             break;
 346         case OPT_NOCAFILE:
 347             noCAfile = 1;
 348             break;
 349         case OPT_NOCAPATH:
 350             noCApath = 1;
 351             break;
 352         case OPT_V_CASES:
 353             if (!opt_verify(o, vpm))
 354                 goto end;
 355             vpmtouched++;
 356             break;
 357         case OPT_VALIDITY_PERIOD:
 358             opt_long(opt_arg(), &nsec);
 359             break;
 360         case OPT_STATUS_AGE:
 361             opt_long(opt_arg(), &maxage);
 362             break;
 363         case OPT_SIGNKEY:
 364             keyfile = opt_arg();
 365             break;
 366         case OPT_REQOUT:
 367             reqout = opt_arg();
 368             break;
 369         case OPT_RESPOUT:
 370             respout = opt_arg();
 371             break;
 372         case OPT_PATH:
 373             path = opt_arg();
 374             break;
 375         case OPT_ISSUER:
 376             issuer = load_cert(opt_arg(), FORMAT_PEM, "issuer certificate");
 377             if (issuer == NULL)
 378                 goto end;
 379             if (issuers == NULL) {
 380                 if ((issuers = sk_X509_new_null()) == NULL)
 381                     goto end;
 382             }
 383             sk_X509_push(issuers, issuer);
 384             break;
 385         case OPT_CERT:
 386             X509_free(cert);
 387             cert = load_cert(opt_arg(), FORMAT_PEM, "certificate");
 388             if (cert == NULL)
 389                 goto end;
 390             if (cert_id_md == NULL)
 391                 cert_id_md = EVP_sha1();
 392             if (!add_ocsp_cert(&req, cert, cert_id_md, issuer, ids))
 393                 goto end;
 394             if (!sk_OPENSSL_STRING_push(reqnames, opt_arg()))
 395                 goto end;
 396             trailing_md = 0;
 397             break;
 398         case OPT_SERIAL:
 399             if (cert_id_md == NULL)
 400                 cert_id_md = EVP_sha1();
 401             if (!add_ocsp_serial(&req, opt_arg(), cert_id_md, issuer, ids))
 402                 goto end;
 403             if (!sk_OPENSSL_STRING_push(reqnames, opt_arg()))
 404                 goto end;
 405             trailing_md = 0;
 406             break;
 407         case OPT_INDEX:
 408             ridx_filename = opt_arg();
 409             break;
 410         case OPT_CA:
 411             rca_filename = opt_arg();
 412             break;
 413         case OPT_NMIN:
 414             opt_int(opt_arg(), &nmin);
 415             if (ndays == -1)
 416                 ndays = 0;
 417             break;
 418         case OPT_REQUEST:
 419             opt_int(opt_arg(), &accept_count);
 420             break;
 421         case OPT_NDAYS:
 422             ndays = atoi(opt_arg());
 423             break;
 424         case OPT_RSIGNER:
 425             rsignfile = opt_arg();
 426             break;
 427         case OPT_RKEY:
 428             rkeyfile = opt_arg();
 429             break;
 430         case OPT_ROTHER:
 431             rcertfile = opt_arg();
 432             break;
 433         case OPT_RMD:   /* Response MessageDigest */
 434             if (!opt_md(opt_arg(), &rsign_md))
 435                 goto end;
 436             break;
 437         case OPT_HEADER:
 438             header = opt_arg();
 439             value = strchr(header, '=');
 440             if (value == NULL) {
 441                 BIO_printf(bio_err, "Missing = in header key=value\n");
 442                 goto opthelp;
 443             }
 444             *value++ = '\0';
 445             if (!X509V3_add_value(header, value, &headers))
 446                 goto end;
 447             break;
 448         case OPT_MD:
 449             if (trailing_md) {
 450                 BIO_printf(bio_err,
 451                            "%s: Digest must be before -cert or -serial\n",
 452                            prog);
 453                 goto opthelp;
 454             }
 455             if (!opt_md(opt_unknown(), &cert_id_md))
 456                 goto opthelp;
 457             trailing_md = 1;
 458             break;
 459         }
 460     }
 461
 462     if (trailing_md) {
 463         BIO_printf(bio_err, "%s: Digest must be before -cert or -serial\n",
 464                    prog);
 465         goto opthelp;
 466     }
 467     argc = opt_num_rest();
 468     if (argc != 0)
 469         goto opthelp;
 470
 471     /* Have we anything to do? */
 472     if (req == NULL&& reqin == NULL
 473         && respin == NULL && !(port != NULL && ridx_filename != NULL))
 474         goto opthelp;
 475
 476     out = bio_open_default(outfile, 'w', FORMAT_TEXT);
 477     if (out == NULL)
 478         goto end;
 479
 480     if (req == NULL && (add_nonce != 2))
 481         add_nonce = 0;
 482
 483     if (req == NULL && reqin != NULL) {
 484         derbio = bio_open_default(reqin, 'r', FORMAT_ASN1);
 485         if (derbio == NULL)
 486             goto end;
 487         req = d2i_OCSP_REQUEST_bio(derbio, NULL);
 488         BIO_free(derbio);
 489         if (req == NULL) {
 490             BIO_printf(bio_err, "Error reading OCSP request\n");
 491             goto end;
 492         }
 493     }
 494
 495     if (req == NULL && port != NULL) {
 496         acbio = init_responder(port);
 497         if (acbio == NULL)
 498             goto end;
 499     }
 500
 501     if (rsignfile != NULL) {
 502         if (rkeyfile == NULL)
 503             rkeyfile = rsignfile;
 504         rsigner = load_cert(rsignfile, FORMAT_PEM, "responder certificate");
 505         if (rsigner == NULL) {
 506             BIO_printf(bio_err, "Error loading responder certificate\n");
 507             goto end;
 508         }
 509         if (!load_certs(rca_filename, &rca_cert, FORMAT_PEM,
 510                         NULL, "CA certificate"))
 511             goto end;
 512         if (rcertfile != NULL) {
 513             if (!load_certs(rcertfile, &rother, FORMAT_PEM, NULL,
 514                             "responder other certificates"))
 515                 goto end;
 516         }
 517         rkey = load_key(rkeyfile, FORMAT_PEM, 0, NULL, NULL,
 518                         "responder private key");
 519         if (rkey == NULL)
 520             goto end;
 521     }
 522     if (acbio != NULL)
 523         BIO_printf(bio_err, "Waiting for OCSP client connections...\n");
 524
 525 redo_accept:
 526
 527     if (acbio != NULL) {
 528         if (!do_responder(&req, &cbio, acbio))
 529             goto end;
 530         if (req == NULL) {
 531             resp =
 532                 OCSP_response_create(OCSP_RESPONSE_STATUS_MALFORMEDREQUEST,
 533                                      NULL);
 534             send_ocsp_response(cbio, resp);
 535             goto done_resp;
 536         }
 537     }
 538
 539     if (req == NULL
 540         && (signfile != NULL || reqout != NULL
 541             || host != NULL || add_nonce || ridx_filename != NULL)) {
 542         BIO_printf(bio_err, "Need an OCSP request for this operation!\n");
 543         goto end;
 544     }
 545
 546     if (req != NULL && add_nonce)
 547         OCSP_request_add1_nonce(req, NULL, -1);
 548
 549     if (signfile != NULL) {
 550         if (keyfile == NULL)
 551             keyfile = signfile;
 552         signer = load_cert(signfile, FORMAT_PEM, "signer certificate");
 553         if (signer == NULL) {
 554             BIO_printf(bio_err, "Error loading signer certificate\n");
 555             goto end;
 556         }
 557         if (sign_certfile != NULL) {
 558             if (!load_certs(sign_certfile, &sign_other, FORMAT_PEM, NULL,
 559                             "signer certificates"))
 560                 goto end;
 561         }
 562         key = load_key(keyfile, FORMAT_PEM, 0, NULL, NULL,
 563                        "signer private key");
 564         if (key == NULL)
 565             goto end;
 566
 567         if (!OCSP_request_sign
 568             (req, signer, key, NULL, sign_other, sign_flags)) {
 569             BIO_printf(bio_err, "Error signing OCSP request\n");
 570             goto end;
 571         }
 572     }
 573
 574     if (req_text && req != NULL)
 575         OCSP_REQUEST_print(out, req, 0);
 576
 577     if (reqout != NULL) {
 578         derbio = bio_open_default(reqout, 'w', FORMAT_ASN1);
 579         if (derbio == NULL)
 580             goto end;
 581         i2d_OCSP_REQUEST_bio(derbio, req);
 582         BIO_free(derbio);
 583     }
 584
 585     if (ridx_filename != NULL
 586         && (rkey == NULL || rsigner == NULL || rca_cert == NULL)) {
 587         BIO_printf(bio_err,
 588                    "Need a responder certificate, key and CA for this operation!\n");
 589         goto end;
 590     }
 591
 592     if (ridx_filename != NULL && rdb == NULL) {
 593         rdb = load_index(ridx_filename, NULL);
 594         if (rdb == NULL)
 595             goto end;
 596         if (!index_index(rdb))
 597             goto end;
 598     }
 599
 600     if (rdb != NULL) {
 601         make_ocsp_response(&resp, req, rdb, rca_cert, rsigner, rkey,
 602                                rsign_md, rother, rflags, nmin, ndays, badsig);
 603         if (cbio != NULL)
 604             send_ocsp_response(cbio, resp);
 605     } else if (host != NULL) {
 606 # ifndef OPENSSL_NO_SOCK
 607         resp = process_responder(req, host, path,
 608                                  port, use_ssl, headers, req_timeout);
 609         if (resp == NULL)
 610             goto end;
 611 # else
 612         BIO_printf(bio_err,
 613                    "Error creating connect BIO - sockets not supported.\n");
 614         goto end;
 615 # endif
 616     } else if (respin != NULL) {
 617         derbio = bio_open_default(respin, 'r', FORMAT_ASN1);
 618         if (derbio == NULL)
 619             goto end;
 620         resp = d2i_OCSP_RESPONSE_bio(derbio, NULL);
 621         BIO_free(derbio);
 622         if (resp == NULL) {
 623             BIO_printf(bio_err, "Error reading OCSP response\n");
 624             goto end;
 625         }
 626     } else {
 627         ret = 0;
 628         goto end;
 629     }
 630
 631  done_resp:
 632
 633     if (respout != NULL) {
 634         derbio = bio_open_default(respout, 'w', FORMAT_ASN1);
 635         if (derbio == NULL)
 636             goto end;
 637         i2d_OCSP_RESPONSE_bio(derbio, resp);
 638         BIO_free(derbio);
 639     }
 640
 641     i = OCSP_response_status(resp);
 642     if (i != OCSP_RESPONSE_STATUS_SUCCESSFUL) {
 643         BIO_printf(out, "Responder Error: %s (%d)\n",
 644                    OCSP_response_status_str(i), i);
 645         if (ignore_err)
 646             goto redo_accept;
 647         ret = 0;
 648         goto end;
 649     }
 650
 651     if (resp_text)
 652         OCSP_RESPONSE_print(out, resp, 0);
 653
 654     /* If running as responder don't verify our own response */
 655     if (cbio != NULL) {
 656         /* If not unlimited, see if we took all we should. */
 657         if (accept_count != -1 && --accept_count <= 0) {
 658             ret = 0;
 659             goto end;
 660         }
 661         BIO_free_all(cbio);
 662         cbio = NULL;
 663         OCSP_REQUEST_free(req);
 664         req = NULL;
 665         OCSP_RESPONSE_free(resp);
 666         resp = NULL;
 667         goto redo_accept;
 668     }
 669     if (ridx_filename != NULL) {
 670         ret = 0;
 671         goto end;
 672     }
 673
 674     if (store == NULL) {
 675         store = setup_verify(CAfile, CApath, noCAfile, noCApath);
 676         if (!store)
 677             goto end;
 678     }
 679     if (vpmtouched)
 680         X509_STORE_set1_param(store, vpm);
 681     if (verify_certfile != NULL) {
 682         if (!load_certs(verify_certfile, &verify_other, FORMAT_PEM, NULL,
 683                         "validator certificate"))
 684             goto end;
 685     }
 686
 687     bs = OCSP_response_get1_basic(resp);
 688     if (bs == NULL) {
 689         BIO_printf(bio_err, "Error parsing response\n");
 690         goto end;
 691     }
 692
 693     ret = 0;
 694
 695     if (!noverify) {
 696         if (req != NULL && ((i = OCSP_check_nonce(req, bs)) <= 0)) {
 697             if (i == -1)
 698                 BIO_printf(bio_err, "WARNING: no nonce in response\n");
 699             else {
 700                 BIO_printf(bio_err, "Nonce Verify error\n");
 701                 ret = 1;
 702                 goto end;
 703             }
 704         }
 705
 706         i = OCSP_basic_verify(bs, verify_other, store, verify_flags);
 707         if (i <= 0 && issuers) {
 708             i = OCSP_basic_verify(bs, issuers, store, OCSP_TRUSTOTHER);
 709             if (i > 0)
 710                 ERR_clear_error();
 711         }
 712         if (i <= 0) {
 713             BIO_printf(bio_err, "Response Verify Failure\n");
 714             ERR_print_errors(bio_err);
 715             ret = 1;
 716         } else {
 717             BIO_printf(bio_err, "Response verify OK\n");
 718         }
 719     }
 720
 721     print_ocsp_summary(out, bs, req, reqnames, ids, nsec, maxage);
 722
 723  end:
 724     ERR_print_errors(bio_err);
 725     X509_free(signer);
 726     X509_STORE_free(store);
 727     X509_VERIFY_PARAM_free(vpm);
 728     EVP_PKEY_free(key);
 729     EVP_PKEY_free(rkey);
 730     X509_free(cert);
 731     sk_X509_pop_free(issuers, X509_free);
 732     X509_free(rsigner);
 733     sk_X509_pop_free(rca_cert, X509_free);
 734     free_index(rdb);
 735     BIO_free_all(cbio);
 736     BIO_free_all(acbio);
 737     BIO_free(out);
 738     OCSP_REQUEST_free(req);
 739     OCSP_RESPONSE_free(resp);
 740     OCSP_BASICRESP_free(bs);
 741     sk_OPENSSL_STRING_free(reqnames);
 742     sk_OCSP_CERTID_free(ids);
 743     sk_X509_pop_free(sign_other, X509_free);
 744     sk_X509_pop_free(verify_other, X509_free);
 745     sk_CONF_VALUE_pop_free(headers, X509V3_conf_free);
 746     OPENSSL_free(thost);
 747     OPENSSL_free(tport);
 748     OPENSSL_free(tpath);
 749
 750     return (ret);
 751 }
 752
 753 static int add_ocsp_cert(OCSP_REQUEST **req, X509 *cert,
 754                          const EVP_MD *cert_id_md, X509 *issuer,
 755                          STACK_OF(OCSP_CERTID) *ids)
 756 {
 757     OCSP_CERTID *id;
 758
 759     if (issuer == NULL) {
 760         BIO_printf(bio_err, "No issuer certificate specified\n");
 761         return 0;
 762     }
 763     if (*req == NULL)
 764         *req = OCSP_REQUEST_new();
 765     if (*req == NULL)
 766         goto err;
 767     id = OCSP_cert_to_id(cert_id_md, cert, issuer);
 768     if (id == NULL || !sk_OCSP_CERTID_push(ids, id))
 769         goto err;
 770     if (!OCSP_request_add0_id(*req, id))
 771         goto err;
 772     return 1;
 773
 774  err:
 775     BIO_printf(bio_err, "Error Creating OCSP request\n");
 776     return 0;
 777 }
 778
 779 static int add_ocsp_serial(OCSP_REQUEST **req, char *serial,
 780                            const EVP_MD *cert_id_md, X509 *issuer,
 781                            STACK_OF(OCSP_CERTID) *ids)
 782 {
 783     OCSP_CERTID *id;
 784     X509_NAME *iname;
 785     ASN1_BIT_STRING *ikey;
 786     ASN1_INTEGER *sno;
 787
 788     if (issuer == NULL) {
 789         BIO_printf(bio_err, "No issuer certificate specified\n");
 790         return 0;
 791     }
 792     if (*req == NULL)
 793         *req = OCSP_REQUEST_new();
 794     if (*req == NULL)
 795         goto err;
 796     iname = X509_get_subject_name(issuer);
 797     ikey = X509_get0_pubkey_bitstr(issuer);
 798     sno = s2i_ASN1_INTEGER(NULL, serial);
 799     if (sno == NULL) {
 800         BIO_printf(bio_err, "Error converting serial number %s\n", serial);
 801         return 0;
 802     }
 803     id = OCSP_cert_id_new(cert_id_md, iname, ikey, sno);
 804     ASN1_INTEGER_free(sno);
 805     if (id == NULL || !sk_OCSP_CERTID_push(ids, id))
 806         goto err;
 807     if (!OCSP_request_add0_id(*req, id))
 808         goto err;
 809     return 1;
 810
 811  err:
 812     BIO_printf(bio_err, "Error Creating OCSP request\n");
 813     return 0;
 814 }
 815
 816 static void print_ocsp_summary(BIO *out, OCSP_BASICRESP *bs, OCSP_REQUEST *req,
 817                               STACK_OF(OPENSSL_STRING) *names,
 818                               STACK_OF(OCSP_CERTID) *ids, long nsec,
 819                               long maxage)
 820 {
 821     OCSP_CERTID *id;
 822     const char *name;
 823     int i, status, reason;
 824     ASN1_GENERALIZEDTIME *rev, *thisupd, *nextupd;
 825
 826     if (bs == NULL || req == NULL || !sk_OPENSSL_STRING_num(names)
 827         || !sk_OCSP_CERTID_num(ids))
 828         return;
 829
 830     for (i = 0; i < sk_OCSP_CERTID_num(ids); i++) {
 831         id = sk_OCSP_CERTID_value(ids, i);
 832         name = sk_OPENSSL_STRING_value(names, i);
 833         BIO_printf(out, "%s: ", name);
 834
 835         if (!OCSP_resp_find_status(bs, id, &status, &reason,
 836                                    &rev, &thisupd, &nextupd)) {
 837             BIO_puts(out, "ERROR: No Status found.\n");
 838             continue;
 839         }
 840
 841         /*
 842          * Check validity: if invalid write to output BIO so we know which
 843          * response this refers to.
 844          */
 845         if (!OCSP_check_validity(thisupd, nextupd, nsec, maxage)) {
 846             BIO_puts(out, "WARNING: Status times invalid.\n");
 847             ERR_print_errors(out);
 848         }
 849         BIO_printf(out, "%s\n", OCSP_cert_status_str(status));
 850
 851         BIO_puts(out, "\tThis Update: ");
 852         ASN1_GENERALIZEDTIME_print(out, thisupd);
 853         BIO_puts(out, "\n");
 854
 855         if (nextupd) {
 856             BIO_puts(out, "\tNext Update: ");
 857             ASN1_GENERALIZEDTIME_print(out, nextupd);
 858             BIO_puts(out, "\n");
 859         }
 860
 861         if (status != V_OCSP_CERTSTATUS_REVOKED)
 862             continue;
 863
 864         if (reason != -1)
 865             BIO_printf(out, "\tReason: %s\n", OCSP_crl_reason_str(reason));
 866
 867         BIO_puts(out, "\tRevocation Time: ");
 868         ASN1_GENERALIZEDTIME_print(out, rev);
 869         BIO_puts(out, "\n");
 870     }
 871 }
 872
 873 static void make_ocsp_response(OCSP_RESPONSE **resp, OCSP_REQUEST *req,
 874                               CA_DB *db, STACK_OF(X509) *ca, X509 *rcert,
 875                               EVP_PKEY *rkey, const EVP_MD *rmd,
 876                               STACK_OF(X509) *rother, unsigned long flags,
 877                               int nmin, int ndays, int badsig)
 878 {
 879     ASN1_TIME *thisupd = NULL, *nextupd = NULL;
 880     OCSP_CERTID *cid;
 881     OCSP_BASICRESP *bs = NULL;
 882     int i, id_count;
 883
 884     id_count = OCSP_request_onereq_count(req);
 885
 886     if (id_count <= 0) {
 887         *resp =
 888             OCSP_response_create(OCSP_RESPONSE_STATUS_MALFORMEDREQUEST, NULL);
 889         goto end;
 890     }
 891
 892     bs = OCSP_BASICRESP_new();
 893     thisupd = X509_gmtime_adj(NULL, 0);
 894     if (ndays != -1)
 895         nextupd = X509_time_adj_ex(NULL, ndays, nmin * 60, NULL);
 896
 897     /* Examine each certificate id in the request */
 898     for (i = 0; i < id_count; i++) {
 899         OCSP_ONEREQ *one;
 900         ASN1_INTEGER *serial;
 901         char **inf;
 902         int jj;
 903         int found = 0;
 904         ASN1_OBJECT *cert_id_md_oid;
 905         const EVP_MD *cert_id_md;
 906         one = OCSP_request_onereq_get0(req, i);
 907         cid = OCSP_onereq_get0_id(one);
 908
 909         OCSP_id_get0_info(NULL, &cert_id_md_oid, NULL, NULL, cid);
 910
 911         cert_id_md = EVP_get_digestbyobj(cert_id_md_oid);
 912         if (cert_id_md == NULL) {
 913             *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_INTERNALERROR,
 914                                          NULL);
 915             goto end;
 916         }
 917         for (jj = 0; jj < sk_X509_num(ca) && !found; jj++) {
 918             X509 *ca_cert = sk_X509_value(ca, jj);
 919             OCSP_CERTID *ca_id = OCSP_cert_to_id(cert_id_md, NULL, ca_cert);
 920
 921             if (OCSP_id_issuer_cmp(ca_id, cid) == 0)
 922                 found = 1;
 923
 924             OCSP_CERTID_free(ca_id);
 925         }
 926
 927         if (!found) {
 928             OCSP_basic_add1_status(bs, cid,
 929                                    V_OCSP_CERTSTATUS_UNKNOWN,
 930                                    0, NULL, thisupd, nextupd);
 931             continue;
 932         }
 933         OCSP_id_get0_info(NULL, NULL, NULL, &serial, cid);
 934         inf = lookup_serial(db, serial);
 935         if (inf == NULL) {
 936             OCSP_basic_add1_status(bs, cid,
 937                                    V_OCSP_CERTSTATUS_UNKNOWN,
 938                                    0, NULL, thisupd, nextupd);
 939         } else if (inf[DB_type][0] == DB_TYPE_VAL) {
 940             OCSP_basic_add1_status(bs, cid,
 941                                    V_OCSP_CERTSTATUS_GOOD,
 942                                    0, NULL, thisupd, nextupd);
 943         } else if (inf[DB_type][0] == DB_TYPE_REV) {
 944             ASN1_OBJECT *inst = NULL;
 945             ASN1_TIME *revtm = NULL;
 946             ASN1_GENERALIZEDTIME *invtm = NULL;
 947             OCSP_SINGLERESP *single;
 948             int reason = -1;
 949             unpack_revinfo(&revtm, &reason, &inst, &invtm, inf[DB_rev_date]);
 950             single = OCSP_basic_add1_status(bs, cid,
 951                                             V_OCSP_CERTSTATUS_REVOKED,
 952                                             reason, revtm, thisupd, nextupd);
 953             if (invtm != NULL)
 954                 OCSP_SINGLERESP_add1_ext_i2d(single, NID_invalidity_date,
 955                                              invtm, 0, 0);
 956             else if (inst != NULL)
 957                 OCSP_SINGLERESP_add1_ext_i2d(single,
 958                                              NID_hold_instruction_code, inst,
 959                                              0, 0);
 960             ASN1_OBJECT_free(inst);
 961             ASN1_TIME_free(revtm);
 962             ASN1_GENERALIZEDTIME_free(invtm);
 963         }
 964     }
 965
 966     OCSP_copy_nonce(bs, req);
 967
 968     OCSP_basic_sign(bs, rcert, rkey, rmd, rother, flags);
 969
 970     if (badsig) {
 971         const ASN1_OCTET_STRING *sig = OCSP_resp_get0_signature(bs);
 972         corrupt_signature(sig);
 973     }
 974
 975     *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_SUCCESSFUL, bs);
 976
 977  end:
 978     ASN1_TIME_free(thisupd);
 979     ASN1_TIME_free(nextupd);
 980     OCSP_BASICRESP_free(bs);
 981 }
 982
 983 static char **lookup_serial(CA_DB *db, ASN1_INTEGER *ser)
 984 {
 985     int i;
 986     BIGNUM *bn = NULL;
 987     char *itmp, *row[DB_NUMBER], **rrow;
 988     for (i = 0; i < DB_NUMBER; i++)
 989         row[i] = NULL;
 990     bn = ASN1_INTEGER_to_BN(ser, NULL);
 991     OPENSSL_assert(bn);         /* FIXME: should report an error at this
 992                                  * point and abort */
 993     if (BN_is_zero(bn))
 994         itmp = OPENSSL_strdup("00");
 995     else
 996         itmp = BN_bn2hex(bn);
 997     row[DB_serial] = itmp;
 998     BN_free(bn);
 999     rrow = TXT_DB_get_by_index(db->db, DB_serial, row);
1000     OPENSSL_free(itmp);
1001     return rrow;
1002 }
1003
1004 /* Quick and dirty OCSP server: read in and parse input request */
1005
1006 static BIO *init_responder(const char *port)
1007 {
1008 # ifdef OPENSSL_NO_SOCK
1009     BIO_printf(bio_err,
1010                "Error setting up accept BIO - sockets not supported.\n");
1011     return NULL;
1012 # else
1013     BIO *acbio = NULL, *bufbio = NULL;
1014
1015     bufbio = BIO_new(BIO_f_buffer());
1016     if (bufbio == NULL)
1017         goto err;
1018     acbio = BIO_new(BIO_s_accept());
1019     if (acbio == NULL
1020         || BIO_set_bind_mode(acbio, BIO_BIND_REUSEADDR) < 0
1021         || BIO_set_accept_port(acbio, port) < 0) {
1022         BIO_printf(bio_err, "Error setting up accept BIO\n");
1023         ERR_print_errors(bio_err);
1024         goto err;
1025     }
1026
1027     BIO_set_accept_bios(acbio, bufbio);
1028     bufbio = NULL;
1029     if (BIO_do_accept(acbio) <= 0) {
1030         BIO_printf(bio_err, "Error starting accept\n");
1031         ERR_print_errors(bio_err);
1032         goto err;
1033     }
1034
1035     return acbio;
1036
1037  err:
1038     BIO_free_all(acbio);
1039     BIO_free(bufbio);
1040     return NULL;
1041 # endif
1042 }
1043
1044 # ifndef OPENSSL_NO_SOCK
1045 /*
1046  * Decode %xx URL-decoding in-place. Ignores mal-formed sequences.
1047  */
1048 static int urldecode(char *p)
1049 {
1050     unsigned char *out = (unsigned char *)p;
1051     unsigned char *save = out;
1052
1053     for (; *p; p++) {
1054         if (*p != '%')
1055             *out++ = *p;
1056         else if (isxdigit(_UC(p[1])) && isxdigit(_UC(p[2]))) {
1057             /* Don't check, can't fail because of ixdigit() call. */
1058             *out++ = (OPENSSL_hexchar2int(p[1]) << 4)
1059                    | OPENSSL_hexchar2int(p[2]);
1060             p += 2;
1061         }
1062         else
1063             return -1;
1064     }
1065     *out = '\0';
1066     return (int)(out - save);
1067 }
1068 # endif
1069
1070 static int do_responder(OCSP_REQUEST **preq, BIO **pcbio, BIO *acbio)
1071 {
1072 # ifdef OPENSSL_NO_SOCK
1073     return 0;
1074 # else
1075     int len;
1076     OCSP_REQUEST *req = NULL;
1077     char inbuf[2048], reqbuf[2048];
1078     char *p, *q;
1079     BIO *cbio = NULL, *getbio = NULL, *b64 = NULL;
1080
1081     if (BIO_do_accept(acbio) <= 0) {
1082         BIO_printf(bio_err, "Error accepting connection\n");
1083         ERR_print_errors(bio_err);
1084         return 0;
1085     }
1086
1087     cbio = BIO_pop(acbio);
1088     *pcbio = cbio;
1089
1090     /* Read the request line. */
1091     len = BIO_gets(cbio, reqbuf, sizeof reqbuf);
1092     if (len <= 0)
1093         return 1;
1094     if (strncmp(reqbuf, "GET ", 4) == 0) {
1095         /* Expecting GET {sp} /URL {sp} HTTP/1.x */
1096         for (p = reqbuf + 4; *p == ' '; ++p)
1097             continue;
1098         if (*p != '/') {
1099             BIO_printf(bio_err, "Invalid request -- bad URL\n");
1100             return 1;
1101         }
1102         p++;
1103
1104         /* Splice off the HTTP version identifier. */
1105         for (q = p; *q; q++)
1106             if (*q == ' ')
1107                 break;
1108         if (strncmp(q, " HTTP/1.", 8) != 0) {
1109             BIO_printf(bio_err, "Invalid request -- bad HTTP vesion\n");
1110             return 1;
1111         }
1112         *q = '\0';
1113         len = urldecode(p);
1114         if (len <= 0) {
1115             BIO_printf(bio_err, "Invalid request -- bad URL encoding\n");
1116             return 1;
1117         }
1118         if ((getbio = BIO_new_mem_buf(p, len)) == NULL
1119             || (b64 = BIO_new(BIO_f_base64())) == NULL) {
1120             BIO_printf(bio_err, "Could not allocate memory\n");
1121             ERR_print_errors(bio_err);
1122             return 1;
1123         }
1124         BIO_set_flags(b64, BIO_FLAGS_BASE64_NO_NL);
1125         getbio = BIO_push(b64, getbio);
1126     } else if (strncmp(reqbuf, "POST ", 5) != 0) {
1127         BIO_printf(bio_err, "Invalid request -- bad HTTP verb\n");
1128         return 1;
1129     }
1130
1131     /* Read and skip past the headers. */
1132     for (;;) {
1133         len = BIO_gets(cbio, inbuf, sizeof inbuf);
1134         if (len <= 0)
1135             return 1;
1136         if ((inbuf[0] == '\r') || (inbuf[0] == '\n'))
1137             break;
1138     }
1139
1140     /* Try to read OCSP request */
1141     if (getbio != NULL) {
1142         req = d2i_OCSP_REQUEST_bio(getbio, NULL);
1143         BIO_free_all(getbio);
1144     } else {
1145         req = d2i_OCSP_REQUEST_bio(cbio, NULL);
1146     }
1147
1148     if (req == NULL) {
1149         BIO_printf(bio_err, "Error parsing OCSP request\n");
1150         ERR_print_errors(bio_err);
1151     }
1152
1153     *preq = req;
1154
1155     return 1;
1156 # endif
1157 }
1158
1159 static int send_ocsp_response(BIO *cbio, OCSP_RESPONSE *resp)
1160 {
1161     char http_resp[] =
1162         "HTTP/1.0 200 OK\r\nContent-type: application/ocsp-response\r\n"
1163         "Content-Length: %d\r\n\r\n";
1164     if (cbio == NULL)
1165         return 0;
1166     BIO_printf(cbio, http_resp, i2d_OCSP_RESPONSE(resp, NULL));
1167     i2d_OCSP_RESPONSE_bio(cbio, resp);
1168     (void)BIO_flush(cbio);
1169     return 1;
1170 }
1171
1172 # ifndef OPENSSL_NO_SOCK
1173 static OCSP_RESPONSE *query_responder(BIO *cbio, const char *host,
1174                                       const char *path,
1175                                       const STACK_OF(CONF_VALUE) *headers,
1176                                       OCSP_REQUEST *req, int req_timeout)
1177 {
1178     int fd;
1179     int rv;
1180     int i;
1181     int add_host = 1;
1182     OCSP_REQ_CTX *ctx = NULL;
1183     OCSP_RESPONSE *rsp = NULL;
1184     fd_set confds;
1185     struct timeval tv;
1186
1187     if (req_timeout != -1)
1188         BIO_set_nbio(cbio, 1);
1189
1190     rv = BIO_do_connect(cbio);
1191
1192     if ((rv <= 0) && ((req_timeout == -1) || !BIO_should_retry(cbio))) {
1193         BIO_puts(bio_err, "Error connecting BIO\n");
1194         return NULL;
1195     }
1196
1197     if (BIO_get_fd(cbio, &fd) < 0) {
1198         BIO_puts(bio_err, "Can't get connection fd\n");
1199         goto err;
1200     }
1201
1202     if (req_timeout != -1 && rv <= 0) {
1203         FD_ZERO(&confds);
1204         openssl_fdset(fd, &confds);
1205         tv.tv_usec = 0;
1206         tv.tv_sec = req_timeout;
1207         rv = select(fd + 1, NULL, (void *)&confds, NULL, &tv);
1208         if (rv == 0) {
1209             BIO_puts(bio_err, "Timeout on connect\n");
1210             return NULL;
1211         }
1212     }
1213
1214     ctx = OCSP_sendreq_new(cbio, path, NULL, -1);
1215     if (ctx == NULL)
1216         return NULL;
1217
1218     for (i = 0; i < sk_CONF_VALUE_num(headers); i++) {
1219         CONF_VALUE *hdr = sk_CONF_VALUE_value(headers, i);
1220         if (add_host == 1 && strcasecmp("host", hdr->name) == 0)
1221             add_host = 0;
1222         if (!OCSP_REQ_CTX_add1_header(ctx, hdr->name, hdr->value))
1223             goto err;
1224     }
1225
1226     if (add_host == 1 && OCSP_REQ_CTX_add1_header(ctx, "Host", host) == 0)
1227         goto err;
1228
1229     if (!OCSP_REQ_CTX_set1_req(ctx, req))
1230         goto err;
1231
1232     for (;;) {
1233         rv = OCSP_sendreq_nbio(&rsp, ctx);
1234         if (rv != -1)
1235             break;
1236         if (req_timeout == -1)
1237             continue;
1238         FD_ZERO(&confds);
1239         openssl_fdset(fd, &confds);
1240         tv.tv_usec = 0;
1241         tv.tv_sec = req_timeout;
1242         if (BIO_should_read(cbio)) {
1243             rv = select(fd + 1, (void *)&confds, NULL, NULL, &tv);
1244         } else if (BIO_should_write(cbio)) {
1245             rv = select(fd + 1, NULL, (void *)&confds, NULL, &tv);
1246         } else {
1247             BIO_puts(bio_err, "Unexpected retry condition\n");
1248             goto err;
1249         }
1250         if (rv == 0) {
1251             BIO_puts(bio_err, "Timeout on request\n");
1252             break;
1253         }
1254         if (rv == -1) {
1255             BIO_puts(bio_err, "Select error\n");
1256             break;
1257         }
1258
1259     }
1260  err:
1261     OCSP_REQ_CTX_free(ctx);
1262
1263     return rsp;
1264 }
1265
1266 OCSP_RESPONSE *process_responder(OCSP_REQUEST *req,
1267                                  const char *host, const char *path,
1268                                  const char *port, int use_ssl,
1269                                  STACK_OF(CONF_VALUE) *headers,
1270                                  int req_timeout)
1271 {
1272     BIO *cbio = NULL;
1273     SSL_CTX *ctx = NULL;
1274     OCSP_RESPONSE *resp = NULL;
1275
1276     cbio = BIO_new_connect(host);
1277     if (cbio == NULL) {
1278         BIO_printf(bio_err, "Error creating connect BIO\n");
1279         goto end;
1280     }
1281     if (port != NULL)
1282         BIO_set_conn_port(cbio, port);
1283     if (use_ssl == 1) {
1284         BIO *sbio;
1285         ctx = SSL_CTX_new(TLS_client_method());
1286         if (ctx == NULL) {
1287             BIO_printf(bio_err, "Error creating SSL context.\n");
1288             goto end;
1289         }
1290         SSL_CTX_set_mode(ctx, SSL_MODE_AUTO_RETRY);
1291         sbio = BIO_new_ssl(ctx, 1);
1292         cbio = BIO_push(sbio, cbio);
1293     }
1294
1295     resp = query_responder(cbio, host, path, headers, req, req_timeout);
1296     if (resp == NULL)
1297         BIO_printf(bio_err, "Error querying OCSP responder\n");
1298  end:
1299     BIO_free_all(cbio);
1300     SSL_CTX_free(ctx);
1301     return resp;
1302 }
1303 # endif
1304
1305 #endif