apps/x509.c

   1 /*
   2  * Copyright 1995-2020 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 <stdio.h>
  11 #include <stdlib.h>
  12 #include <string.h>
  13 #include "apps.h"
  14 #include "progs.h"
  15 #include <openssl/bio.h>
  16 #include <openssl/asn1.h>
  17 #include <openssl/err.h>
  18 #include <openssl/bn.h>
  19 #include <openssl/evp.h>
  20 #include <openssl/x509.h>
  21 #include <openssl/x509v3.h>
  22 #include <openssl/objects.h>
  23 #include <openssl/pem.h>
  24 #include <openssl/rsa.h>
  25 #ifndef OPENSSL_NO_DSA
  26 # include <openssl/dsa.h>
  27 #endif
  28
  29 #undef POSTFIX
  30 #define POSTFIX ".srl"
  31 #define DEFAULT_DAYS    30 /* default cert validity period in days */
  32 #define UNSET_DAYS      -2 /* -1 is used for testing expiration checks */
  33
  34 static int callb(int ok, X509_STORE_CTX *ctx);
  35 static int sign(X509 *x, EVP_PKEY *pkey, X509 *issuer,
  36                 STACK_OF(OPENSSL_STRING) *sigopts,
  37                 int days, int clrext,
  38                 const EVP_MD *digest, CONF *conf, const char *section,
  39                 int preserve_dates);
  40 static int x509_certify(X509_STORE *ctx, const char *CAfile,
  41                         const EVP_MD *digest,
  42                         X509 *x, X509 *xca, EVP_PKEY *pkey,
  43                         STACK_OF(OPENSSL_STRING) *sigopts,
  44                         const char *serialfile, int create,
  45                         int days, int clrext, CONF *conf, const char *section,
  46                         ASN1_INTEGER *sno, int preserve_dates);
  47 static int purpose_print(BIO *bio, X509 *cert, X509_PURPOSE *pt);
  48 static int print_x509v3_exts(BIO *bio, X509 *x, const char *exts);
  49
  50 typedef enum OPTION_choice {
  51     OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
  52     OPT_INFORM, OPT_OUTFORM, OPT_KEYFORM, OPT_REQ, OPT_CAFORM,
  53     OPT_CAKEYFORM, OPT_VFYOPT, OPT_SIGOPT, OPT_DAYS, OPT_PASSIN, OPT_EXTFILE,
  54     OPT_EXTENSIONS, OPT_IN, OPT_OUT, OPT_SIGNKEY, OPT_CA, OPT_CAKEY,
  55     OPT_CASERIAL, OPT_SET_SERIAL, OPT_NEW, OPT_FORCE_PUBKEY, OPT_SUBJ,
  56     OPT_ADDTRUST, OPT_ADDREJECT, OPT_SETALIAS, OPT_CERTOPT, OPT_NAMEOPT,
  57     OPT_EMAIL, OPT_OCSP_URI, OPT_SERIAL, OPT_NEXT_SERIAL,
  58     OPT_MODULUS, OPT_PUBKEY, OPT_X509TOREQ, OPT_TEXT, OPT_HASH,
  59     OPT_ISSUER_HASH, OPT_SUBJECT, OPT_ISSUER, OPT_FINGERPRINT, OPT_DATES,
  60     OPT_PURPOSE, OPT_STARTDATE, OPT_ENDDATE, OPT_CHECKEND, OPT_CHECKHOST,
  61     OPT_CHECKEMAIL, OPT_CHECKIP, OPT_NOOUT, OPT_TRUSTOUT, OPT_CLRTRUST,
  62     OPT_CLRREJECT, OPT_ALIAS, OPT_CACREATESERIAL, OPT_CLREXT, OPT_OCSPID,
  63     OPT_SUBJECT_HASH_OLD,
  64     OPT_ISSUER_HASH_OLD,
  65     OPT_BADSIG, OPT_MD, OPT_ENGINE, OPT_NOCERT, OPT_PRESERVE_DATES,
  66     OPT_R_ENUM, OPT_PROV_ENUM, OPT_EXT
  67 } OPTION_CHOICE;
  68
  69 const OPTIONS x509_options[] = {
  70     OPT_SECTION("General"),
  71     {"help", OPT_HELP, '-', "Display this summary"},
  72
  73     {"in", OPT_IN, '<',
  74      "Certificate input (default stdin), or CSR input file with -req"},
  75     {"passin", OPT_PASSIN, 's', "Private key and cert file pass-phrase source"},
  76     {"new", OPT_NEW, '-', "Generate a certificate from scratch"},
  77     {"x509toreq", OPT_X509TOREQ, '-',
  78      "Output a certification request (rather than a certificate)"},
  79     {"req", OPT_REQ, '-', "Input is a CSR file (rather than a certificate)"},
  80     {"inform", OPT_INFORM, 'f',
  81      "CSR input file format (DER or PEM) - default PEM"},
  82     {"vfyopt", OPT_VFYOPT, 's', "CSR verification parameter in n:v form"},
  83     {"signkey", OPT_SIGNKEY, 's',
  84      "Key used to self-sign certificate or cert request"},
  85     {"keyform", OPT_KEYFORM, 'E',
  86      "Key input format (ENGINE, other values ignored)"},
  87     {"out", OPT_OUT, '>', "Output file - default stdout"},
  88     {"outform", OPT_OUTFORM, 'f',
  89      "Output format (DER or PEM) - default PEM"},
  90     {"nocert", OPT_NOCERT, '-',
  91      "No cert output (except for requested printing)"},
  92     {"noout", OPT_NOOUT, '-', "No output (except for requested printing)"},
  93
  94     OPT_SECTION("Certificate printing"),
  95     {"text", OPT_TEXT, '-', "Print the certificate in text form"},
  96     {"certopt", OPT_CERTOPT, 's', "Various certificate text printing options"},
  97     {"fingerprint", OPT_FINGERPRINT, '-', "Print the certificate fingerprint"},
  98     {"alias", OPT_ALIAS, '-', "Print certificate alias"},
  99     {"serial", OPT_SERIAL, '-', "Print serial number value"},
 100     {"startdate", OPT_STARTDATE, '-', "Print the notBefore field"},
 101     {"enddate", OPT_ENDDATE, '-', "Print the notAfter field"},
 102     {"dates", OPT_DATES, '-', "Print both notBefore and notAfter fields"},
 103     {"subject", OPT_SUBJECT, '-', "Print subject DN"},
 104     {"issuer", OPT_ISSUER, '-', "Print issuer DN"},
 105     {"nameopt", OPT_NAMEOPT, 's',
 106      "Certificate subject/issuer name printing options"},
 107     {"email", OPT_EMAIL, '-', "Print email address(es)"},
 108     {"hash", OPT_HASH, '-', "Synonym for -subject_hash (for backward compat)"},
 109     {"subject_hash", OPT_HASH, '-', "Print subject hash value"},
 110 #ifndef OPENSSL_NO_MD5
 111     {"subject_hash_old", OPT_SUBJECT_HASH_OLD, '-',
 112      "Print old-style (MD5) subject hash value"},
 113 #endif
 114     {"issuer_hash", OPT_ISSUER_HASH, '-', "Print issuer hash value"},
 115 #ifndef OPENSSL_NO_MD5
 116     {"issuer_hash_old", OPT_ISSUER_HASH_OLD, '-',
 117      "Print old-style (MD5) issuer hash value"},
 118 #endif
 119     {"ext", OPT_EXT, 's', "Print the specified X509V3 extensions"},
 120     {"ocspid", OPT_OCSPID, '-',
 121      "Print OCSP hash values for the subject name and public key"},
 122     {"ocsp_uri", OPT_OCSP_URI, '-', "Print OCSP Responder URL(s)"},
 123     {"purpose", OPT_PURPOSE, '-', "Print out certificate purposes"},
 124     {"pubkey", OPT_PUBKEY, '-', "Print the public key in PEM format"},
 125     {"modulus", OPT_MODULUS, '-', "Print the RSA key modulus"},
 126
 127     OPT_SECTION("Certificate checking"),
 128     {"checkend", OPT_CHECKEND, 'M',
 129      "Check whether cert expires in the next arg seconds"},
 130     {OPT_MORE_STR, 1, 1, "Exit 1 (failure) if so, 0 if not"},
 131     {"checkhost", OPT_CHECKHOST, 's', "Check certificate matches host"},
 132     {"checkemail", OPT_CHECKEMAIL, 's', "Check certificate matches email"},
 133     {"checkip", OPT_CHECKIP, 's', "Check certificate matches ipaddr"},
 134
 135     OPT_SECTION("Certificate output"),
 136     {"set_serial", OPT_SET_SERIAL, 's',
 137      "Serial number to use, overrides -CAserial"},
 138     {"next_serial", OPT_NEXT_SERIAL, '-',
 139      "Increment current certificate serial number"},
 140     {"days", OPT_DAYS, 'n',
 141      "Number of days until newly generated certificate expires - default 30"},
 142     {"preserve_dates", OPT_PRESERVE_DATES, '-',
 143      "Preserve existing validity dates"},
 144     {"subj", OPT_SUBJ, 's', "Set or override certificate subject (and issuer)"},
 145     {"force_pubkey", OPT_FORCE_PUBKEY, '<',
 146      "Place the given key in new certificate"},
 147     {"clrext", OPT_CLREXT, '-', "Clear all certificate extensions"},
 148     {"extfile", OPT_EXTFILE, '<', "Config file with X509V3 extensions to add"},
 149     {"extensions", OPT_EXTENSIONS, 's',
 150      "Section of extfile to use - default: unnamed section"},
 151     {"sigopt", OPT_SIGOPT, 's', "Signature parameter in n:v form"},
 152     {"badsig", OPT_BADSIG, '-',
 153      "Corrupt last byte of certificate signature (for test)"},
 154     {"", OPT_MD, '-', "Any supported digest, used for signing and printing"},
 155
 156     OPT_SECTION("Micro-CA"),
 157     {"CA", OPT_CA, '<',
 158      "Use the given CA certificate, conflicts with -signkey"},
 159     {"CAform", OPT_CAFORM, 'F', "CA cert format (PEM/DER/P12); has no effect"},
 160     {"CAkey", OPT_CAKEY, 's', "The corresponding CA key; default is -CA arg"},
 161     {"CAkeyform", OPT_CAKEYFORM, 'E',
 162      "CA key format (ENGINE, other values ignored)"},
 163     {"CAserial", OPT_CASERIAL, 's',
 164      "File that keeps track of CA-generated serial number"},
 165     {"CAcreateserial", OPT_CACREATESERIAL, '-',
 166      "Create CA serial number file if it does not exist"},
 167
 168     OPT_SECTION("Certificate trust output"),
 169     {"trustout", OPT_TRUSTOUT, '-', "Mark certificate PEM output as trusted"},
 170     {"setalias", OPT_SETALIAS, 's', "Set certificate alias (nickname)"},
 171     {"clrtrust", OPT_CLRTRUST, '-', "Clear all trusted purposes"},
 172     {"addtrust", OPT_ADDTRUST, 's', "Trust certificate for a given purpose"},
 173     {"clrreject", OPT_CLRREJECT, '-',
 174      "Clears all the prohibited or rejected uses of the certificate"},
 175     {"addreject", OPT_ADDREJECT, 's',
 176      "Reject certificate for a given purpose"},
 177
 178     OPT_R_OPTIONS,
 179 #ifndef OPENSSL_NO_ENGINE
 180     {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
 181 #endif
 182     OPT_PROV_OPTIONS,
 183     {NULL}
 184 };
 185
 186 int x509_main(int argc, char **argv)
 187 {
 188     ASN1_INTEGER *sno = NULL;
 189     ASN1_OBJECT *objtmp = NULL;
 190     BIO *out = NULL;
 191     CONF *extconf = NULL;
 192     EVP_PKEY *signkey = NULL, *CAkey = NULL, *pubkey = NULL;
 193     int newcert = 0;
 194     char *subj = NULL;
 195     X509_NAME *fsubj = NULL;
 196     const unsigned long chtype = MBSTRING_ASC;
 197     const int multirdn = 1;
 198     STACK_OF(ASN1_OBJECT) *trust = NULL, *reject = NULL;
 199     STACK_OF(OPENSSL_STRING) *sigopts = NULL, *vfyopts = NULL;
 200     X509 *x = NULL, *xca = NULL;
 201     X509_REQ *req = NULL, *rq = NULL;
 202     X509_STORE *ctx = NULL;
 203     const EVP_MD *digest = NULL;
 204     char *CAkeyfile = NULL, *CAserial = NULL, *pubkeyfile = NULL, *alias = NULL;
 205     char *checkhost = NULL, *checkemail = NULL, *checkip = NULL, *exts = NULL;
 206     char *extsect = NULL, *extfile = NULL, *passin = NULL, *passinarg = NULL;
 207     char *infile = NULL, *outfile = NULL, *signkeyfile = NULL, *CAfile = NULL;
 208     char *prog;
 209     int days = UNSET_DAYS; /* not explicitly set */
 210     int x509toreq = 0, modulus = 0, print_pubkey = 0, pprint = 0;
 211     int CAformat = FORMAT_PEM, CAkeyformat = FORMAT_PEM;
 212     int fingerprint = 0, reqfile = 0, checkend = 0;
 213     int informat = FORMAT_PEM, outformat = FORMAT_PEM, keyformat = FORMAT_PEM;
 214     int next_serial = 0, subject_hash = 0, issuer_hash = 0, ocspid = 0;
 215     int noout = 0, CA_createserial = 0, email = 0;
 216     int ocsp_uri = 0, trustout = 0, clrtrust = 0, clrreject = 0, aliasout = 0;
 217     int ret = 1, i, num = 0, badsig = 0, clrext = 0, nocert = 0;
 218     int text = 0, serial = 0, subject = 0, issuer = 0, startdate = 0, ext = 0;
 219     int enddate = 0;
 220     time_t checkoffset = 0;
 221     unsigned long certflag = 0;
 222     int preserve_dates = 0;
 223     OPTION_CHOICE o;
 224     ENGINE *e = NULL;
 225 #ifndef OPENSSL_NO_MD5
 226     int subject_hash_old = 0, issuer_hash_old = 0;
 227 #endif
 228
 229     ctx = X509_STORE_new();
 230     if (ctx == NULL)
 231         goto end;
 232     X509_STORE_set_verify_cb(ctx, callb);
 233
 234     prog = opt_init(argc, argv, x509_options);
 235     while ((o = opt_next()) != OPT_EOF) {
 236         switch (o) {
 237         case OPT_EOF:
 238         case OPT_ERR:
 239  opthelp:
 240             BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
 241             goto end;
 242         case OPT_HELP:
 243             opt_help(x509_options);
 244             ret = 0;
 245             goto end;
 246         case OPT_INFORM:
 247             if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &informat))
 248                 goto opthelp;
 249             break;
 250         case OPT_IN:
 251             infile = opt_arg();
 252             break;
 253         case OPT_OUTFORM:
 254             if (!opt_format(opt_arg(), OPT_FMT_ANY, &outformat))
 255                 goto opthelp;
 256             break;
 257         case OPT_KEYFORM:
 258             if (!opt_format(opt_arg(), OPT_FMT_ANY, &keyformat))
 259                 goto opthelp;
 260             break;
 261         case OPT_CAFORM:
 262             if (!opt_format(opt_arg(), OPT_FMT_ANY, &CAformat))
 263                 goto opthelp;
 264             break;
 265         case OPT_CAKEYFORM:
 266             if (!opt_format(opt_arg(), OPT_FMT_ANY, &CAkeyformat))
 267                 goto opthelp;
 268             break;
 269         case OPT_OUT:
 270             outfile = opt_arg();
 271             break;
 272         case OPT_REQ:
 273             reqfile = 1;
 274             break;
 275
 276         case OPT_SIGOPT:
 277             if (!sigopts)
 278                 sigopts = sk_OPENSSL_STRING_new_null();
 279             if (!sigopts || !sk_OPENSSL_STRING_push(sigopts, opt_arg()))
 280                 goto opthelp;
 281             break;
 282         case OPT_VFYOPT:
 283             if (!vfyopts)
 284                 vfyopts = sk_OPENSSL_STRING_new_null();
 285             if (!vfyopts || !sk_OPENSSL_STRING_push(vfyopts, opt_arg()))
 286                 goto opthelp;
 287             break;
 288         case OPT_DAYS:
 289             days = atoi(opt_arg());
 290             if (days < -1) {
 291                 BIO_printf(bio_err, "%s: -days parameter arg must be >= -1\n",
 292                            prog);
 293                 goto end;
 294             }
 295             break;
 296         case OPT_PASSIN:
 297             passinarg = opt_arg();
 298             break;
 299         case OPT_EXTFILE:
 300             extfile = opt_arg();
 301             break;
 302         case OPT_R_CASES:
 303             if (!opt_rand(o))
 304                 goto end;
 305             break;
 306         case OPT_PROV_CASES:
 307             if (!opt_provider(o))
 308                 goto end;
 309             break;
 310         case OPT_EXTENSIONS:
 311             extsect = opt_arg();
 312             break;
 313         case OPT_SIGNKEY:
 314             signkeyfile = opt_arg();
 315             break;
 316         case OPT_CA:
 317             CAfile = opt_arg();
 318             break;
 319         case OPT_CAKEY:
 320             CAkeyfile = opt_arg();
 321             break;
 322         case OPT_CASERIAL:
 323             CAserial = opt_arg();
 324             break;
 325         case OPT_SET_SERIAL:
 326             if (sno != NULL) {
 327                 BIO_printf(bio_err, "Serial number supplied twice\n");
 328                 goto opthelp;
 329             }
 330             if ((sno = s2i_ASN1_INTEGER(NULL, opt_arg())) == NULL)
 331                 goto opthelp;
 332             break;
 333         case OPT_NEW:
 334             newcert = 1;
 335             break;
 336         case OPT_FORCE_PUBKEY:
 337             pubkeyfile = opt_arg();
 338             break;
 339         case OPT_SUBJ:
 340             subj = opt_arg();
 341             break;
 342         case OPT_ADDTRUST:
 343             if ((objtmp = OBJ_txt2obj(opt_arg(), 0)) == NULL) {
 344                 BIO_printf(bio_err,
 345                            "%s: Invalid trust object value %s\n",
 346                            prog, opt_arg());
 347                 goto opthelp;
 348             }
 349             if (trust == NULL && (trust = sk_ASN1_OBJECT_new_null()) == NULL)
 350                 goto end;
 351             sk_ASN1_OBJECT_push(trust, objtmp);
 352             objtmp = NULL;
 353             trustout = 1;
 354             break;
 355         case OPT_ADDREJECT:
 356             if ((objtmp = OBJ_txt2obj(opt_arg(), 0)) == NULL) {
 357                 BIO_printf(bio_err,
 358                            "%s: Invalid reject object value %s\n",
 359                            prog, opt_arg());
 360                 goto opthelp;
 361             }
 362             if (reject == NULL
 363                 && (reject = sk_ASN1_OBJECT_new_null()) == NULL)
 364                 goto end;
 365             sk_ASN1_OBJECT_push(reject, objtmp);
 366             objtmp = NULL;
 367             trustout = 1;
 368             break;
 369         case OPT_SETALIAS:
 370             alias = opt_arg();
 371             trustout = 1;
 372             break;
 373         case OPT_CERTOPT:
 374             if (!set_cert_ex(&certflag, opt_arg()))
 375                 goto opthelp;
 376             break;
 377         case OPT_NAMEOPT:
 378             if (!set_nameopt(opt_arg()))
 379                 goto opthelp;
 380             break;
 381         case OPT_ENGINE:
 382             e = setup_engine(opt_arg(), 0);
 383             break;
 384         case OPT_EMAIL:
 385             email = ++num;
 386             break;
 387         case OPT_OCSP_URI:
 388             ocsp_uri = ++num;
 389             break;
 390         case OPT_SERIAL:
 391             serial = ++num;
 392             break;
 393         case OPT_NEXT_SERIAL:
 394             next_serial = ++num;
 395             break;
 396         case OPT_MODULUS:
 397             modulus = ++num;
 398             break;
 399         case OPT_PUBKEY:
 400             print_pubkey = ++num;
 401             break;
 402         case OPT_X509TOREQ:
 403             x509toreq = 1;
 404             break;
 405         case OPT_TEXT:
 406             text = ++num;
 407             break;
 408         case OPT_SUBJECT:
 409             subject = ++num;
 410             break;
 411         case OPT_ISSUER:
 412             issuer = ++num;
 413             break;
 414         case OPT_FINGERPRINT:
 415             fingerprint = ++num;
 416             break;
 417         case OPT_HASH:
 418             subject_hash = ++num;
 419             break;
 420         case OPT_ISSUER_HASH:
 421             issuer_hash = ++num;
 422             break;
 423         case OPT_PURPOSE:
 424             pprint = ++num;
 425             break;
 426         case OPT_STARTDATE:
 427             startdate = ++num;
 428             break;
 429         case OPT_ENDDATE:
 430             enddate = ++num;
 431             break;
 432         case OPT_NOOUT:
 433             noout = ++num;
 434             break;
 435         case OPT_EXT:
 436             ext = ++num;
 437             exts = opt_arg();
 438             break;
 439         case OPT_NOCERT:
 440             nocert = 1;
 441             break;
 442         case OPT_TRUSTOUT:
 443             trustout = 1;
 444             break;
 445         case OPT_CLRTRUST:
 446             clrtrust = ++num;
 447             break;
 448         case OPT_CLRREJECT:
 449             clrreject = ++num;
 450             break;
 451         case OPT_ALIAS:
 452             aliasout = ++num;
 453             break;
 454         case OPT_CACREATESERIAL:
 455             CA_createserial = ++num;
 456             break;
 457         case OPT_CLREXT:
 458             clrext = 1;
 459             break;
 460         case OPT_OCSPID:
 461             ocspid = ++num;
 462             break;
 463         case OPT_BADSIG:
 464             badsig = 1;
 465             break;
 466 #ifndef OPENSSL_NO_MD5
 467         case OPT_SUBJECT_HASH_OLD:
 468             subject_hash_old = ++num;
 469             break;
 470         case OPT_ISSUER_HASH_OLD:
 471             issuer_hash_old = ++num;
 472             break;
 473 #else
 474         case OPT_SUBJECT_HASH_OLD:
 475         case OPT_ISSUER_HASH_OLD:
 476             break;
 477 #endif
 478         case OPT_DATES:
 479             startdate = ++num;
 480             enddate = ++num;
 481             break;
 482         case OPT_CHECKEND:
 483             checkend = 1;
 484             {
 485                 intmax_t temp = 0;
 486                 if (!opt_imax(opt_arg(), &temp))
 487                     goto opthelp;
 488                 checkoffset = (time_t)temp;
 489                 if ((intmax_t)checkoffset != temp) {
 490                     BIO_printf(bio_err, "%s: Checkend time out of range %s\n",
 491                                prog, opt_arg());
 492                     goto opthelp;
 493                 }
 494             }
 495             break;
 496         case OPT_CHECKHOST:
 497             checkhost = opt_arg();
 498             break;
 499         case OPT_CHECKEMAIL:
 500             checkemail = opt_arg();
 501             break;
 502         case OPT_CHECKIP:
 503             checkip = opt_arg();
 504             break;
 505         case OPT_PRESERVE_DATES:
 506             preserve_dates = 1;
 507             break;
 508         case OPT_MD:
 509             if (!opt_md(opt_unknown(), &digest))
 510                 goto opthelp;
 511         }
 512     }
 513
 514     /* No extra arguments. */
 515     argc = opt_num_rest();
 516     if (argc != 0)
 517         goto opthelp;
 518
 519     if (preserve_dates && days != UNSET_DAYS) {
 520         BIO_printf(bio_err, "Cannot use -preserve_dates with -days option\n");
 521         goto end;
 522     }
 523     if (days == UNSET_DAYS)
 524         days = DEFAULT_DAYS;
 525
 526     if (!app_passwd(passinarg, NULL, &passin, NULL)) {
 527         BIO_printf(bio_err, "Error getting password\n");
 528         goto end;
 529     }
 530
 531     if (!X509_STORE_set_default_paths_ex(ctx, app_get0_libctx(),
 532                                          app_get0_propq()))
 533         goto end;
 534
 535     if (newcert && infile != NULL) {
 536         BIO_printf(bio_err, "The -in option cannot be used with -new\n");
 537         goto end;
 538     }
 539     if (newcert && reqfile) {
 540         BIO_printf(bio_err,
 541                    "The -req option cannot be used with -new\n");
 542         goto end;
 543     }
 544     if (signkeyfile != NULL) {
 545         signkey = load_key(signkeyfile, keyformat, 0, passin, e, "private key");
 546         if (signkey == NULL)
 547             goto end;
 548     }
 549     if (pubkeyfile != NULL) {
 550         if ((pubkey = load_pubkey(pubkeyfile, keyformat, 0, NULL, e,
 551                                   "explicitly set public key")) == NULL)
 552             goto end;
 553     }
 554
 555     if (newcert) {
 556         if (subj == NULL) {
 557             BIO_printf(bio_err,
 558                        "The -new option requires a subject to be set using -subj\n");
 559             goto end;
 560         }
 561         if (signkeyfile == NULL && pubkeyfile == NULL) {
 562             BIO_printf(bio_err,
 563                        "The -new option without -signkey requires using -force_pubkey\n");
 564             goto end;
 565         }
 566     }
 567     if (subj != NULL
 568             && (fsubj = parse_name(subj, chtype, multirdn, "subject")) == NULL)
 569         goto end;
 570
 571     if (CAkeyfile == NULL)
 572         CAkeyfile = CAfile;
 573     if (CAfile != NULL) {
 574         if (signkeyfile != NULL) {
 575             BIO_printf(bio_err, "Cannot use both -signkey and -CA option\n");
 576             goto end;
 577         }
 578     } else if (CAkeyfile != NULL) {
 579         BIO_printf(bio_err,
 580                    "Warning: ignoring -CAkey option since no -CA option is given\n");
 581     }
 582
 583     if (extfile == NULL) {
 584         if (extsect != NULL)
 585             BIO_printf(bio_err,
 586                        "Warning: ignoring -extensions option without -extfile\n");
 587     } else {
 588         X509V3_CTX ctx2;
 589
 590         if ((extconf = app_load_config(extfile)) == NULL)
 591             goto end;
 592         if (extsect == NULL) {
 593             extsect = NCONF_get_string(extconf, "default", "extensions");
 594             if (extsect == NULL) {
 595                 ERR_clear_error();
 596                 extsect = "default";
 597             }
 598         }
 599         X509V3_set_ctx_test(&ctx2);
 600         X509V3_set_nconf(&ctx2, extconf);
 601         if (!X509V3_EXT_add_nconf(extconf, &ctx2, extsect, NULL)) {
 602             BIO_printf(bio_err,
 603                        "Error checking extension section %s\n", extsect);
 604             goto end;
 605         }
 606     }
 607
 608     if (reqfile) {
 609         EVP_PKEY *pkey;
 610
 611         req = load_csr(infile, informat, "certificate request input");
 612         if (req == NULL)
 613             goto end;
 614
 615         if ((pkey = X509_REQ_get0_pubkey(req)) == NULL) {
 616             BIO_printf(bio_err, "Error unpacking public key\n");
 617             goto end;
 618         }
 619         i = do_X509_REQ_verify(req, pkey, vfyopts);
 620         if (i < 0) {
 621             BIO_printf(bio_err,
 622                        "Error while verifying certificate request self-signature\n");
 623             goto end;
 624         }
 625         if (i == 0) {
 626             BIO_printf(bio_err,
 627                        "Certificate request self-signature did not match the contents\n");
 628             goto end;
 629         } else {
 630             BIO_printf(bio_err, "Certificate request self-signature ok\n");
 631         }
 632
 633         print_name(bio_err, "subject=", X509_REQ_get_subject_name(req),
 634                    get_nameopt());
 635     }
 636
 637     if (reqfile || newcert) {
 638         if (preserve_dates)
 639             BIO_printf(bio_err,
 640                        "Warning: ignoring -preserve_dates option with -req or -new\n");
 641         preserve_dates = 0;
 642         if (signkeyfile == NULL && CAkeyfile == NULL) {
 643             BIO_printf(bio_err,
 644                        "We need a private key to sign with, use -signkey or -CAkey or -CA with private key\n");
 645             goto end;
 646         }
 647         if ((x = X509_new_ex(app_get0_libctx(), app_get0_propq())) == NULL)
 648             goto end;
 649         if (sno == NULL) {
 650             sno = ASN1_INTEGER_new();
 651             if (sno == NULL || !rand_serial(NULL, sno))
 652                 goto end;
 653             if (!X509_set_serialNumber(x, sno))
 654                 goto end;
 655             ASN1_INTEGER_free(sno);
 656             sno = NULL;
 657         } else if (!X509_set_serialNumber(x, sno)) {
 658             goto end;
 659         }
 660         /* TODO: (optionally) copy X.509 extensions from req */
 661     } else {
 662         x = load_cert_pass(infile, 1, passin, "certificate");
 663         if (x == NULL)
 664             goto end;
 665     }
 666     if ((fsubj != NULL || req != NULL)
 667         && !X509_set_subject_name(x, fsubj != NULL ? fsubj :
 668                                   X509_REQ_get_subject_name(req)))
 669         goto end;
 670     if ((pubkey != NULL || signkey != NULL || req != NULL)
 671         && !X509_set_pubkey(x, pubkey != NULL ? pubkey :
 672                             signkey != NULL ? signkey :
 673                             X509_REQ_get0_pubkey(req)))
 674         goto end;
 675
 676     if (CAfile != NULL) {
 677         xca = load_cert_pass(CAfile, 1, passin, "CA certificate");
 678         if (xca == NULL)
 679             goto end;
 680     }
 681
 682     out = bio_open_default(outfile, 'w', outformat);
 683     if (out == NULL)
 684         goto end;
 685
 686     if (!noout || text || next_serial)
 687         OBJ_create("2.99999.3", "SET.ex3", "SET x509v3 extension 3");
 688     /* TODO: why is this strange object created (and no error checked)? */
 689
 690     if (alias)
 691         X509_alias_set1(x, (unsigned char *)alias, -1);
 692
 693     if (clrtrust)
 694         X509_trust_clear(x);
 695     if (clrreject)
 696         X509_reject_clear(x);
 697
 698     if (trust != NULL) {
 699         for (i = 0; i < sk_ASN1_OBJECT_num(trust); i++) {
 700             objtmp = sk_ASN1_OBJECT_value(trust, i);
 701             X509_add1_trust_object(x, objtmp);
 702         }
 703         objtmp = NULL;
 704     }
 705
 706     if (reject != NULL) {
 707         for (i = 0; i < sk_ASN1_OBJECT_num(reject); i++) {
 708             objtmp = sk_ASN1_OBJECT_value(reject, i);
 709             X509_add1_reject_object(x, objtmp);
 710         }
 711         objtmp = NULL;
 712     }
 713
 714     if (x509toreq) { /* also works but makes little sense together with -req */
 715         if (signkey == NULL) {
 716             BIO_printf(bio_err, "Must specify request key using -signkey\n");
 717             goto end;
 718         }
 719
 720         if ((rq = X509_to_X509_REQ(x, signkey, digest)) == NULL)
 721             goto end;
 722         /* TODO: (optionally) copy X.509 extensions from x */
 723         if (!noout) {
 724             if (outformat == FORMAT_ASN1) {
 725                 X509_REQ_print_ex(out, rq, get_nameopt(), X509_FLAG_COMPAT);
 726                 i = i2d_X509_bio(out, x);
 727             } else {
 728                 i = PEM_write_bio_X509_REQ(out, rq);
 729             }
 730             if (!i) {
 731                 BIO_printf(bio_err,
 732                            "Unable to write certificate request\n");
 733                 goto end;
 734             }
 735         }
 736         noout = 1;
 737     } else if (signkey != NULL) {
 738         if (!sign(x, signkey, x /* self-issuing */, sigopts, days, clrext,
 739                   digest, extconf, extsect, preserve_dates))
 740             goto end;
 741     } else if (CAfile != NULL) {
 742         if (!reqfile && !newcert) { /* certificate should be self-signed */
 743             X509_STORE_CTX *xsc = X509_STORE_CTX_new();
 744
 745             if (xsc == NULL || !X509_STORE_CTX_init(xsc, ctx, x, NULL)) {
 746                 BIO_printf(bio_err, "Error initialising X509 store\n");
 747                 X509_STORE_CTX_free(xsc);
 748                 goto end;
 749             }
 750             X509_STORE_CTX_set_cert(xsc, x);
 751             X509_STORE_CTX_set_flags(xsc, X509_V_FLAG_CHECK_SS_SIGNATURE);
 752             i = X509_verify_cert(xsc);
 753             X509_STORE_CTX_free(xsc);
 754             if (i <= 0)
 755                 goto end;
 756         }
 757         if ((CAkey = load_key(CAkeyfile, CAkeyformat,
 758                               0, passin, e, "CA private key")) == NULL)
 759             goto end;
 760         if (!x509_certify(ctx, CAfile, digest, x, xca, CAkey, sigopts,
 761                           CAserial, CA_createserial, days, clrext,
 762                           extconf, extsect, sno, preserve_dates))
 763             goto end;
 764     }
 765     if (badsig) {
 766         const ASN1_BIT_STRING *signature;
 767
 768         X509_get0_signature(&signature, NULL, x);
 769         corrupt_signature(signature);
 770     }
 771
 772     if (num) { /* TODO remove this needless guard and extra indentation below */
 773         /* Process print options in the given order, as indicated by index i */
 774         for (i = 1; i <= num; i++) {
 775             if (issuer == i) {
 776                 print_name(out, "issuer=", X509_get_issuer_name(x),
 777                            get_nameopt());
 778             } else if (subject == i) {
 779                 print_name(out, "subject=",
 780                            X509_get_subject_name(x), get_nameopt());
 781             } else if (serial == i) {
 782                 BIO_printf(out, "serial=");
 783                 i2a_ASN1_INTEGER(out, X509_get0_serialNumber(x));
 784                 BIO_printf(out, "\n");
 785             } else if (next_serial == i) {
 786                 ASN1_INTEGER *ser = X509_get_serialNumber(x);
 787                 BIGNUM *bnser = ASN1_INTEGER_to_BN(ser, NULL);
 788
 789                 if (!bnser)
 790                     goto end;
 791                 if (!BN_add_word(bnser, 1))
 792                     goto end;
 793                 ser = BN_to_ASN1_INTEGER(bnser, NULL);
 794                 if (!ser)
 795                     goto end;
 796                 BN_free(bnser);
 797                 i2a_ASN1_INTEGER(out, ser);
 798                 ASN1_INTEGER_free(ser);
 799                 BIO_puts(out, "\n");
 800             } else if (email == i || ocsp_uri == i) {
 801                 STACK_OF(OPENSSL_STRING) *emlst;
 802                 int j;
 803
 804                 if (email == i)
 805                     emlst = X509_get1_email(x);
 806                 else
 807                     emlst = X509_get1_ocsp(x);
 808                 for (j = 0; j < sk_OPENSSL_STRING_num(emlst); j++)
 809                     BIO_printf(out, "%s\n",
 810                                sk_OPENSSL_STRING_value(emlst, j));
 811                 X509_email_free(emlst);
 812             } else if (aliasout == i) {
 813                 unsigned char *alstr;
 814
 815                 alstr = X509_alias_get0(x, NULL);
 816                 if (alstr)
 817                     BIO_printf(out, "%s\n", alstr);
 818                 else
 819                     BIO_puts(out, "<No Alias>\n");
 820             } else if (subject_hash == i) {
 821                 BIO_printf(out, "%08lx\n", X509_subject_name_hash(x));
 822 #ifndef OPENSSL_NO_MD5
 823             } else if (subject_hash_old == i) {
 824                 BIO_printf(out, "%08lx\n", X509_subject_name_hash_old(x));
 825 #endif
 826             } else if (issuer_hash == i) {
 827                 BIO_printf(out, "%08lx\n", X509_issuer_name_hash(x));
 828 #ifndef OPENSSL_NO_MD5
 829             } else if (issuer_hash_old == i) {
 830                 BIO_printf(out, "%08lx\n", X509_issuer_name_hash_old(x));
 831 #endif
 832             } else if (pprint == i) {
 833                 X509_PURPOSE *ptmp;
 834                 int j;
 835
 836                 BIO_printf(out, "Certificate purposes:\n");
 837                 for (j = 0; j < X509_PURPOSE_get_count(); j++) {
 838                     ptmp = X509_PURPOSE_get0(j);
 839                     purpose_print(out, x, ptmp);
 840                 }
 841             } else if (modulus == i) {
 842                 EVP_PKEY *pkey;
 843
 844                 pkey = X509_get0_pubkey(x);
 845                 if (pkey == NULL) {
 846                     BIO_printf(bio_err,
 847                                "Modulus unavailable: cannot get key\n");
 848                     goto end;
 849                 }
 850                 BIO_printf(out, "Modulus=");
 851                 if (EVP_PKEY_is_a(pkey, "RSA")) {
 852                     BIGNUM *n;
 853
 854                     /* Every RSA key has an 'n' */
 855                     EVP_PKEY_get_bn_param(pkey, "n", &n);
 856                     BN_print(out, n);
 857                     BN_free(n);
 858                 } else if (EVP_PKEY_is_a(pkey, "DSA")) {
 859                     BIGNUM *dsapub;
 860
 861                     /* Every DSA key has an 'pub' */
 862                     EVP_PKEY_get_bn_param(pkey, "pub", &dsapub);
 863                     BN_print(out, dsapub);
 864                     BN_free(dsapub);
 865                 } else {
 866                     BIO_printf(out, "No modulus for this public key type");
 867                 }
 868                 BIO_printf(out, "\n");
 869             } else if (print_pubkey == i) {
 870                 EVP_PKEY *pkey;
 871
 872                 pkey = X509_get0_pubkey(x);
 873                 if (pkey == NULL) {
 874                     BIO_printf(bio_err, "Error getting public key\n");
 875                     goto end;
 876                 }
 877                 PEM_write_bio_PUBKEY(out, pkey);
 878             } else if (text == i) {
 879                 X509_print_ex(out, x, get_nameopt(), certflag);
 880             } else if (startdate == i) {
 881                 BIO_puts(out, "notBefore=");
 882                 ASN1_TIME_print(out, X509_get0_notBefore(x));
 883                 BIO_puts(out, "\n");
 884             } else if (enddate == i) {
 885                 BIO_puts(out, "notAfter=");
 886                 ASN1_TIME_print(out, X509_get0_notAfter(x));
 887                 BIO_puts(out, "\n");
 888             } else if (fingerprint == i) {
 889                 int j;
 890                 unsigned int n;
 891                 unsigned char md[EVP_MAX_MD_SIZE];
 892                 const EVP_MD *fdig = digest;
 893
 894                 if (fdig == NULL)
 895                     fdig = EVP_sha1();
 896
 897                 if (!X509_digest(x, fdig, md, &n)) {
 898                     BIO_printf(bio_err, "Out of memory\n");
 899                     goto end;
 900                 }
 901                 BIO_printf(out, "%s Fingerprint=",
 902                            OBJ_nid2sn(EVP_MD_type(fdig)));
 903                 for (j = 0; j < (int)n; j++) {
 904                     BIO_printf(out, "%02X%c", md[j], (j + 1 == (int)n)
 905                                ? '\n' : ':');
 906                 }
 907             } else if (ocspid == i) {
 908                 X509_ocspid_print(out, x);
 909             } else if (ext == i) {
 910                 print_x509v3_exts(out, x, exts);
 911             }
 912         }
 913     }
 914
 915     if (checkend) {
 916         time_t tcheck = time(NULL) + checkoffset;
 917
 918         if (X509_cmp_time(X509_get0_notAfter(x), &tcheck) < 0) {
 919             BIO_printf(out, "Certificate will expire\n");
 920             ret = 1;
 921         } else {
 922             BIO_printf(out, "Certificate will not expire\n");
 923             ret = 0;
 924         }
 925         goto end;
 926     }
 927
 928     print_cert_checks(out, x, checkhost, checkemail, checkip);
 929
 930     if (noout || nocert) {
 931         ret = 0;
 932         goto end;
 933     }
 934
 935     if (outformat == FORMAT_ASN1) {
 936         i = i2d_X509_bio(out, x);
 937     } else if (outformat == FORMAT_PEM) {
 938         if (trustout)
 939             i = PEM_write_bio_X509_AUX(out, x);
 940         else
 941             i = PEM_write_bio_X509(out, x);
 942     } else {
 943         BIO_printf(bio_err, "Bad output format specified for outfile\n");
 944         goto end;
 945     }
 946     if (!i) {
 947         BIO_printf(bio_err, "Unable to write certificate\n");
 948         goto end;
 949     }
 950     ret = 0;
 951
 952  end:
 953     if (ret != 0)
 954         ERR_print_errors(bio_err);
 955     NCONF_free(extconf);
 956     BIO_free_all(out);
 957     X509_STORE_free(ctx);
 958     X509_NAME_free(fsubj);
 959     X509_REQ_free(req);
 960     X509_free(x);
 961     X509_free(xca);
 962     EVP_PKEY_free(signkey);
 963     EVP_PKEY_free(CAkey);
 964     EVP_PKEY_free(pubkey);
 965     sk_OPENSSL_STRING_free(sigopts);
 966     sk_OPENSSL_STRING_free(vfyopts);
 967     X509_REQ_free(rq);
 968     ASN1_INTEGER_free(sno);
 969     sk_ASN1_OBJECT_pop_free(trust, ASN1_OBJECT_free);
 970     sk_ASN1_OBJECT_pop_free(reject, ASN1_OBJECT_free);
 971     ASN1_OBJECT_free(objtmp);
 972     release_engine(e);
 973     clear_free(passin);
 974     return ret;
 975 }
 976
 977 static ASN1_INTEGER *x509_load_serial(const char *CAfile,
 978                                       const char *serialfile, int create)
 979 {
 980     char *buf = NULL;
 981     ASN1_INTEGER *bs = NULL;
 982     BIGNUM *serial = NULL;
 983
 984     if (serialfile == NULL) {
 985         const char *p = strrchr(CAfile, '.');
 986         size_t len = p != NULL ? (size_t)(p - CAfile) : strlen(CAfile);
 987
 988         buf = app_malloc(len + sizeof(POSTFIX), "serial# buffer");
 989         memcpy(buf, CAfile, len);
 990         memcpy(buf + len, POSTFIX, sizeof(POSTFIX));
 991         serialfile = buf;
 992     }
 993
 994     serial = load_serial(serialfile, create, NULL);
 995     if (serial == NULL)
 996         goto end;
 997
 998     if (!BN_add_word(serial, 1)) {
 999         BIO_printf(bio_err, "Serial number increment failure\n");
1000         goto end;
1001     }
1002
1003     if (!save_serial(serialfile, NULL, serial, &bs))
1004         goto end;
1005
1006  end:
1007     OPENSSL_free(buf);
1008     BN_free(serial);
1009     return bs;
1010 }
1011
1012 static int x509_certify(X509_STORE *ctx, const char *CAfile,
1013                         const EVP_MD *digest,
1014                         X509 *x, X509 *xca, EVP_PKEY *pkey,
1015                         STACK_OF(OPENSSL_STRING) *sigopts,
1016                         const char *serialfile, int create,
1017                         int days, int clrext, CONF *conf, const char *section,
1018                         ASN1_INTEGER *sno, int preserve_dates)
1019 {
1020     int ret = 0;
1021     ASN1_INTEGER *bs = NULL;
1022
1023     if (!X509_check_private_key(xca, pkey)) {
1024         BIO_printf(bio_err,
1025                    "CA certificate and CA private key do not match\n");
1026         goto end;
1027     }
1028
1029     if (sno)
1030         bs = sno;
1031     else if ((bs = x509_load_serial(CAfile, serialfile, create)) == NULL)
1032         goto end;
1033     if (!X509_set_serialNumber(x, bs))
1034         goto end;
1035
1036     if (!sign(x, pkey, xca, sigopts, days, clrext, digest,
1037               conf, section, preserve_dates))
1038         goto end;
1039
1040     ret = 1;
1041  end:
1042     if (!sno)
1043         ASN1_INTEGER_free(bs);
1044     return ret;
1045 }
1046
1047 static int callb(int ok, X509_STORE_CTX *ctx)
1048 {
1049     int err;
1050     X509 *err_cert;
1051
1052     /*
1053      * It is ok to use a self-signed certificate. This case will catch both
1054      * the initial ok == 0 and the final ok == 1 calls to this function.
1055      */
1056     err = X509_STORE_CTX_get_error(ctx);
1057     if (err == X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT)
1058         return 1;
1059
1060     /*
1061      * BAD we should have gotten an error.  Normally if everything worked
1062      * X509_STORE_CTX_get_error(ctx) will still be set to
1063      * DEPTH_ZERO_SELF_....
1064      */
1065     if (ok) {
1066         BIO_printf(bio_err,
1067                    "Error with certificate to be certified - should be self-signed\n");
1068         return 0;
1069     } else {
1070         err_cert = X509_STORE_CTX_get_current_cert(ctx);
1071         print_name(bio_err, NULL, X509_get_subject_name(err_cert), 0);
1072         BIO_printf(bio_err,
1073                    "Error with certificate - error %d at depth %d\n%s\n", err,
1074                    X509_STORE_CTX_get_error_depth(ctx),
1075                    X509_verify_cert_error_string(err));
1076         return 1;
1077     }
1078 }
1079
1080 static int sign(X509 *x, EVP_PKEY *pkey, X509 *issuer,
1081                 STACK_OF(OPENSSL_STRING) *sigopts,
1082                 int days, int clrext,
1083                 const EVP_MD *digest, CONF *conf, const char *section,
1084                 int preserve_dates)
1085 {
1086     X509V3_CTX ext_ctx;
1087
1088     if (!X509_set_issuer_name(x, X509_get_subject_name(issuer)))
1089         return 0;
1090
1091     if (!preserve_dates && !set_cert_times(x, NULL, NULL, days))
1092         return 0;
1093
1094     if (clrext) {
1095         while (X509_get_ext_count(x) > 0)
1096             X509_delete_ext(x, 0);
1097     }
1098
1099     X509V3_set_ctx(&ext_ctx, issuer, x, NULL, NULL, X509V3_CTX_REPLACE);
1100     if (issuer == x
1101         /* prepare the correct AKID of self-issued, possibly self-signed cert */
1102             && !X509V3_set_issuer_pkey(&ext_ctx, pkey))
1103         return 0;
1104
1105     if (conf != NULL) {
1106         X509V3_set_nconf(&ext_ctx, conf);
1107         if (!X509V3_EXT_add_nconf(conf, &ext_ctx, section, x)) {
1108             BIO_printf(bio_err,
1109                        "Error adding extensions from section %s\n", section);
1110             return 0;
1111         }
1112     }
1113     return do_X509_sign(x, pkey, digest, sigopts, &ext_ctx);
1114 }
1115
1116 static int purpose_print(BIO *bio, X509 *cert, X509_PURPOSE *pt)
1117 {
1118     int id, i, idret;
1119     const char *pname;
1120     id = X509_PURPOSE_get_id(pt);
1121     pname = X509_PURPOSE_get0_name(pt);
1122     for (i = 0; i < 2; i++) {
1123         idret = X509_check_purpose(cert, id, i);
1124         BIO_printf(bio, "%s%s : ", pname, i ? " CA" : "");
1125         if (idret == 1)
1126             BIO_printf(bio, "Yes\n");
1127         else if (idret == 0)
1128             BIO_printf(bio, "No\n");
1129         else
1130             BIO_printf(bio, "Yes (WARNING code=%d)\n", idret);
1131     }
1132     return 1;
1133 }
1134
1135 static int parse_ext_names(char *names, const char **result)
1136 {
1137     char *p, *q;
1138     int cnt = 0, len = 0;
1139
1140     p = q = names;
1141     len = strlen(names);
1142
1143     while (q - names <= len) {
1144         if (*q != ',' && *q != '\0') {
1145             q++;
1146             continue;
1147         }
1148         if (p != q) {
1149             /* found */
1150             if (result != NULL) {
1151                 result[cnt] = p;
1152                 *q = '\0';
1153             }
1154             cnt++;
1155         }
1156         p = ++q;
1157     }
1158
1159     return cnt;
1160 }
1161
1162 static int print_x509v3_exts(BIO *bio, X509 *x, const char *ext_names)
1163 {
1164     const STACK_OF(X509_EXTENSION) *exts = NULL;
1165     STACK_OF(X509_EXTENSION) *exts2 = NULL;
1166     X509_EXTENSION *ext = NULL;
1167     ASN1_OBJECT *obj;
1168     int i, j, ret = 0, num, nn = 0;
1169     const char *sn, **names = NULL;
1170     char *tmp_ext_names = NULL;
1171
1172     exts = X509_get0_extensions(x);
1173     if ((num = sk_X509_EXTENSION_num(exts)) <= 0) {
1174         BIO_printf(bio_err, "No extensions in certificate\n");
1175         ret = 1;
1176         goto end;
1177     }
1178
1179     /* parse comma separated ext name string */
1180     if ((tmp_ext_names = OPENSSL_strdup(ext_names)) == NULL)
1181         goto end;
1182     if ((nn = parse_ext_names(tmp_ext_names, NULL)) == 0) {
1183         BIO_printf(bio, "Invalid extension names: %s\n", ext_names);
1184         goto end;
1185     }
1186     if ((names = OPENSSL_malloc(sizeof(char *) * nn)) == NULL)
1187         goto end;
1188     parse_ext_names(tmp_ext_names, names);
1189
1190     for (i = 0; i < num; i++) {
1191         ext = sk_X509_EXTENSION_value(exts, i);
1192
1193         /* check if this ext is what we want */
1194         obj = X509_EXTENSION_get_object(ext);
1195         sn = OBJ_nid2sn(OBJ_obj2nid(obj));
1196         if (sn == NULL || strcmp(sn, "UNDEF") == 0)
1197             continue;
1198
1199         for (j = 0; j < nn; j++) {
1200             if (strcmp(sn, names[j]) == 0) {
1201                 /* push the extension into a new stack */
1202                 if (exts2 == NULL
1203                     && (exts2 = sk_X509_EXTENSION_new_null()) == NULL)
1204                     goto end;
1205                 if (!sk_X509_EXTENSION_push(exts2, ext))
1206                     goto end;
1207             }
1208         }
1209     }
1210
1211     if (!sk_X509_EXTENSION_num(exts2)) {
1212         BIO_printf(bio, "No extensions matched with %s\n", ext_names);
1213         ret = 1;
1214         goto end;
1215     }
1216
1217     ret = X509V3_extensions_print(bio, NULL, exts2, 0, 0);
1218  end:
1219     sk_X509_EXTENSION_free(exts2);
1220     OPENSSL_free(names);
1221     OPENSSL_free(tmp_ext_names);
1222     return ret;
1223 }