apps/x509.c

   1 /*
   2  * Copyright 1995-2018 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 #ifndef OPENSSL_NO_RSA
  25 # include <openssl/rsa.h>
  26 #endif
  27 #ifndef OPENSSL_NO_DSA
  28 # include <openssl/dsa.h>
  29 #endif
  30
  31 #undef POSTFIX
  32 #define POSTFIX ".srl"
  33 #define DEF_DAYS        30
  34
  35 static int callb(int ok, X509_STORE_CTX *ctx);
  36 static int sign(X509 *x, EVP_PKEY *pkey, int days, int clrext,
  37                 const EVP_MD *digest, CONF *conf, const char *section,
  38                 int preserve_dates);
  39 static int x509_certify(X509_STORE *ctx, const char *CAfile, const EVP_MD *digest,
  40                         X509 *x, X509 *xca, EVP_PKEY *pkey,
  41                         STACK_OF(OPENSSL_STRING) *sigopts, const char *serialfile,
  42                         int create, int days, int clrext, CONF *conf,
  43                         const char *section, ASN1_INTEGER *sno, int reqfile,
  44                         int preserve_dates);
  45 static int purpose_print(BIO *bio, X509 *cert, X509_PURPOSE *pt);
  46 static int print_x509v3_exts(BIO *bio, X509 *x, const char *exts);
  47
  48 typedef enum OPTION_choice {
  49     OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
  50     OPT_INFORM, OPT_OUTFORM, OPT_KEYFORM, OPT_REQ, OPT_CAFORM,
  51     OPT_CAKEYFORM, OPT_SIGOPT, OPT_DAYS, OPT_PASSIN, OPT_EXTFILE,
  52     OPT_EXTENSIONS, OPT_IN, OPT_OUT, OPT_SIGNKEY, OPT_CA,
  53     OPT_CAKEY, OPT_CASERIAL, OPT_SET_SERIAL, OPT_FORCE_PUBKEY,
  54     OPT_ADDTRUST, OPT_ADDREJECT, OPT_SETALIAS, OPT_CERTOPT, OPT_NAMEOPT,
  55     OPT_C, OPT_EMAIL, OPT_OCSP_URI, OPT_SERIAL, OPT_NEXT_SERIAL,
  56     OPT_MODULUS, OPT_PUBKEY, OPT_X509TOREQ, OPT_TEXT, OPT_HASH,
  57     OPT_ISSUER_HASH, OPT_SUBJECT, OPT_ISSUER, OPT_FINGERPRINT, OPT_DATES,
  58     OPT_PURPOSE, OPT_STARTDATE, OPT_ENDDATE, OPT_CHECKEND, OPT_CHECKHOST,
  59     OPT_CHECKEMAIL, OPT_CHECKIP, OPT_NOOUT, OPT_TRUSTOUT, OPT_CLRTRUST,
  60     OPT_CLRREJECT, OPT_ALIAS, OPT_CACREATESERIAL, OPT_CLREXT, OPT_OCSPID,
  61     OPT_SUBJECT_HASH_OLD,
  62     OPT_ISSUER_HASH_OLD,
  63     OPT_BADSIG, OPT_MD, OPT_ENGINE, OPT_NOCERT, OPT_PRESERVE_DATES,
  64     OPT_R_ENUM, OPT_EXT
  65 } OPTION_CHOICE;
  66
  67 const OPTIONS x509_options[] = {
  68     {"help", OPT_HELP, '-', "Display this summary"},
  69     {"inform", OPT_INFORM, 'f',
  70      "Input format - default PEM (one of DER or PEM)"},
  71     {"in", OPT_IN, '<', "Input file - default stdin"},
  72     {"outform", OPT_OUTFORM, 'f',
  73      "Output format - default PEM (one of DER or PEM)"},
  74     {"out", OPT_OUT, '>', "Output file - default stdout"},
  75     {"keyform", OPT_KEYFORM, 'F', "Private key format - default PEM"},
  76     {"passin", OPT_PASSIN, 's', "Private key password/pass-phrase source"},
  77     {"serial", OPT_SERIAL, '-', "Print serial number value"},
  78     {"subject_hash", OPT_HASH, '-', "Print subject hash value"},
  79     {"issuer_hash", OPT_ISSUER_HASH, '-', "Print issuer hash value"},
  80     {"hash", OPT_HASH, '-', "Synonym for -subject_hash"},
  81     {"subject", OPT_SUBJECT, '-', "Print subject DN"},
  82     {"issuer", OPT_ISSUER, '-', "Print issuer DN"},
  83     {"email", OPT_EMAIL, '-', "Print email address(es)"},
  84     {"startdate", OPT_STARTDATE, '-', "Set notBefore field"},
  85     {"enddate", OPT_ENDDATE, '-', "Set notAfter field"},
  86     {"purpose", OPT_PURPOSE, '-', "Print out certificate purposes"},
  87     {"dates", OPT_DATES, '-', "Both Before and After dates"},
  88     {"modulus", OPT_MODULUS, '-', "Print the RSA key modulus"},
  89     {"pubkey", OPT_PUBKEY, '-', "Output the public key"},
  90     {"fingerprint", OPT_FINGERPRINT, '-',
  91      "Print the certificate fingerprint"},
  92     {"alias", OPT_ALIAS, '-', "Output certificate alias"},
  93     {"noout", OPT_NOOUT, '-', "No output, just status"},
  94     {"nocert", OPT_NOCERT, '-', "No certificate output"},
  95     {"ocspid", OPT_OCSPID, '-',
  96      "Print OCSP hash values for the subject name and public key"},
  97     {"ocsp_uri", OPT_OCSP_URI, '-', "Print OCSP Responder URL(s)"},
  98     {"trustout", OPT_TRUSTOUT, '-', "Output a trusted certificate"},
  99     {"clrtrust", OPT_CLRTRUST, '-', "Clear all trusted purposes"},
 100     {"clrext", OPT_CLREXT, '-', "Clear all certificate extensions"},
 101     {"addtrust", OPT_ADDTRUST, 's', "Trust certificate for a given purpose"},
 102     {"addreject", OPT_ADDREJECT, 's',
 103      "Reject certificate for a given purpose"},
 104     {"setalias", OPT_SETALIAS, 's', "Set certificate alias"},
 105     {"days", OPT_DAYS, 'n',
 106      "How long till expiry of a signed certificate - def 30 days"},
 107     {"checkend", OPT_CHECKEND, 'M',
 108      "Check whether the cert expires in the next arg seconds"},
 109     {OPT_MORE_STR, 1, 1, "Exit 1 if so, 0 if not"},
 110     {"signkey", OPT_SIGNKEY, '<', "Self sign cert with arg"},
 111     {"x509toreq", OPT_X509TOREQ, '-',
 112      "Output a certification request object"},
 113     {"req", OPT_REQ, '-', "Input is a certificate request, sign and output"},
 114     {"CA", OPT_CA, '<', "Set the CA certificate, must be PEM format"},
 115     {"CAkey", OPT_CAKEY, 's',
 116      "The CA key, must be PEM format; if not in CAfile"},
 117     {"CAcreateserial", OPT_CACREATESERIAL, '-',
 118      "Create serial number file if it does not exist"},
 119     {"CAserial", OPT_CASERIAL, 's', "Serial file"},
 120     {"set_serial", OPT_SET_SERIAL, 's', "Serial number to use"},
 121     {"text", OPT_TEXT, '-', "Print the certificate in text form"},
 122     {"ext", OPT_EXT, 's', "Print various X509V3 extensions"},
 123     {"C", OPT_C, '-', "Print out C code forms"},
 124     {"extfile", OPT_EXTFILE, '<', "File with X509V3 extensions to add"},
 125     OPT_R_OPTIONS,
 126     {"extensions", OPT_EXTENSIONS, 's', "Section from config file to use"},
 127     {"nameopt", OPT_NAMEOPT, 's', "Various certificate name options"},
 128     {"certopt", OPT_CERTOPT, 's', "Various certificate text options"},
 129     {"checkhost", OPT_CHECKHOST, 's', "Check certificate matches host"},
 130     {"checkemail", OPT_CHECKEMAIL, 's', "Check certificate matches email"},
 131     {"checkip", OPT_CHECKIP, 's', "Check certificate matches ipaddr"},
 132     {"CAform", OPT_CAFORM, 'F', "CA format - default PEM"},
 133     {"CAkeyform", OPT_CAKEYFORM, 'f', "CA key format - default PEM"},
 134     {"sigopt", OPT_SIGOPT, 's', "Signature parameter in n:v form"},
 135     {"force_pubkey", OPT_FORCE_PUBKEY, '<', "Force the Key to put inside certificate"},
 136     {"next_serial", OPT_NEXT_SERIAL, '-', "Increment current certificate serial number"},
 137     {"clrreject", OPT_CLRREJECT, '-',
 138      "Clears all the prohibited or rejected uses of the certificate"},
 139     {"badsig", OPT_BADSIG, '-', "Corrupt last byte of certificate signature (for test)"},
 140     {"", OPT_MD, '-', "Any supported digest"},
 141 #ifndef OPENSSL_NO_MD5
 142     {"subject_hash_old", OPT_SUBJECT_HASH_OLD, '-',
 143      "Print old-style (MD5) issuer hash value"},
 144     {"issuer_hash_old", OPT_ISSUER_HASH_OLD, '-',
 145      "Print old-style (MD5) subject hash value"},
 146 #endif
 147 #ifndef OPENSSL_NO_ENGINE
 148     {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
 149 #endif
 150     {"preserve_dates", OPT_PRESERVE_DATES, '-', "preserve existing dates when signing"},
 151     {NULL}
 152 };
 153
 154 int x509_main(int argc, char **argv)
 155 {
 156     ASN1_INTEGER *sno = NULL;
 157     ASN1_OBJECT *objtmp = NULL;
 158     BIO *out = NULL;
 159     CONF *extconf = NULL;
 160     EVP_PKEY *Upkey = NULL, *CApkey = NULL, *fkey = NULL;
 161     STACK_OF(ASN1_OBJECT) *trust = NULL, *reject = NULL;
 162     STACK_OF(OPENSSL_STRING) *sigopts = NULL;
 163     X509 *x = NULL, *xca = NULL;
 164     X509_REQ *req = NULL, *rq = NULL;
 165     X509_STORE *ctx = NULL;
 166     const EVP_MD *digest = NULL;
 167     char *CAkeyfile = NULL, *CAserial = NULL, *fkeyfile = NULL, *alias = NULL;
 168     char *checkhost = NULL, *checkemail = NULL, *checkip = NULL, *exts = NULL;
 169     char *extsect = NULL, *extfile = NULL, *passin = NULL, *passinarg = NULL;
 170     char *infile = NULL, *outfile = NULL, *keyfile = NULL, *CAfile = NULL;
 171     char *prog;
 172     int x509req = 0, days = DEF_DAYS, modulus = 0, pubkey = 0, pprint = 0;
 173     int C = 0, CAformat = FORMAT_PEM, CAkeyformat = FORMAT_PEM;
 174     int fingerprint = 0, reqfile = 0, checkend = 0;
 175     int informat = FORMAT_PEM, outformat = FORMAT_PEM, keyformat = FORMAT_PEM;
 176     int next_serial = 0, subject_hash = 0, issuer_hash = 0, ocspid = 0;
 177     int noout = 0, sign_flag = 0, CA_flag = 0, CA_createserial = 0, email = 0;
 178     int ocsp_uri = 0, trustout = 0, clrtrust = 0, clrreject = 0, aliasout = 0;
 179     int ret = 1, i, num = 0, badsig = 0, clrext = 0, nocert = 0;
 180     int text = 0, serial = 0, subject = 0, issuer = 0, startdate = 0, ext = 0;
 181     int enddate = 0;
 182     time_t checkoffset = 0;
 183     unsigned long certflag = 0;
 184     int preserve_dates = 0;
 185     OPTION_CHOICE o;
 186     ENGINE *e = NULL;
 187 #ifndef OPENSSL_NO_MD5
 188     int subject_hash_old = 0, issuer_hash_old = 0;
 189 #endif
 190
 191     ctx = X509_STORE_new();
 192     if (ctx == NULL)
 193         goto end;
 194     X509_STORE_set_verify_cb(ctx, callb);
 195
 196     prog = opt_init(argc, argv, x509_options);
 197     while ((o = opt_next()) != OPT_EOF) {
 198         switch (o) {
 199         case OPT_EOF:
 200         case OPT_ERR:
 201  opthelp:
 202             BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
 203             goto end;
 204         case OPT_HELP:
 205             opt_help(x509_options);
 206             ret = 0;
 207             goto end;
 208         case OPT_INFORM:
 209             if (!opt_format(opt_arg(), OPT_FMT_ANY, &informat))
 210                 goto opthelp;
 211             break;
 212         case OPT_IN:
 213             infile = opt_arg();
 214             break;
 215         case OPT_OUTFORM:
 216             if (!opt_format(opt_arg(), OPT_FMT_ANY, &outformat))
 217                 goto opthelp;
 218             break;
 219         case OPT_KEYFORM:
 220             if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &keyformat))
 221                 goto opthelp;
 222             break;
 223         case OPT_CAFORM:
 224             if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &CAformat))
 225                 goto opthelp;
 226             break;
 227         case OPT_CAKEYFORM:
 228             if (!opt_format(opt_arg(), OPT_FMT_ANY, &CAkeyformat))
 229                 goto opthelp;
 230             break;
 231         case OPT_OUT:
 232             outfile = opt_arg();
 233             break;
 234         case OPT_REQ:
 235             reqfile = 1;
 236             break;
 237
 238         case OPT_SIGOPT:
 239             if (!sigopts)
 240                 sigopts = sk_OPENSSL_STRING_new_null();
 241             if (!sigopts || !sk_OPENSSL_STRING_push(sigopts, opt_arg()))
 242                 goto opthelp;
 243             break;
 244         case OPT_DAYS:
 245             if (preserve_dates)
 246                 goto opthelp;
 247             days = atoi(opt_arg());
 248             break;
 249         case OPT_PASSIN:
 250             passinarg = opt_arg();
 251             break;
 252         case OPT_EXTFILE:
 253             extfile = opt_arg();
 254             break;
 255         case OPT_R_CASES:
 256             if (!opt_rand(o))
 257                 goto end;
 258             break;
 259         case OPT_EXTENSIONS:
 260             extsect = opt_arg();
 261             break;
 262         case OPT_SIGNKEY:
 263             keyfile = opt_arg();
 264             sign_flag = ++num;
 265             break;
 266         case OPT_CA:
 267             CAfile = opt_arg();
 268             CA_flag = ++num;
 269             break;
 270         case OPT_CAKEY:
 271             CAkeyfile = opt_arg();
 272             break;
 273         case OPT_CASERIAL:
 274             CAserial = opt_arg();
 275             break;
 276         case OPT_SET_SERIAL:
 277             if (sno != NULL) {
 278                 BIO_printf(bio_err, "Serial number supplied twice\n");
 279                 goto opthelp;
 280             }
 281             if ((sno = s2i_ASN1_INTEGER(NULL, opt_arg())) == NULL)
 282                 goto opthelp;
 283             break;
 284         case OPT_FORCE_PUBKEY:
 285             fkeyfile = opt_arg();
 286             break;
 287         case OPT_ADDTRUST:
 288             if ((objtmp = OBJ_txt2obj(opt_arg(), 0)) == NULL) {
 289                 BIO_printf(bio_err,
 290                            "%s: Invalid trust object value %s\n",
 291                            prog, opt_arg());
 292                 goto opthelp;
 293             }
 294             if (trust == NULL && (trust = sk_ASN1_OBJECT_new_null()) == NULL)
 295                 goto end;
 296             sk_ASN1_OBJECT_push(trust, objtmp);
 297             objtmp = NULL;
 298             trustout = 1;
 299             break;
 300         case OPT_ADDREJECT:
 301             if ((objtmp = OBJ_txt2obj(opt_arg(), 0)) == NULL) {
 302                 BIO_printf(bio_err,
 303                            "%s: Invalid reject object value %s\n",
 304                            prog, opt_arg());
 305                 goto opthelp;
 306             }
 307             if (reject == NULL
 308                 && (reject = sk_ASN1_OBJECT_new_null()) == NULL)
 309                 goto end;
 310             sk_ASN1_OBJECT_push(reject, objtmp);
 311             objtmp = NULL;
 312             trustout = 1;
 313             break;
 314         case OPT_SETALIAS:
 315             alias = opt_arg();
 316             trustout = 1;
 317             break;
 318         case OPT_CERTOPT:
 319             if (!set_cert_ex(&certflag, opt_arg()))
 320                 goto opthelp;
 321             break;
 322         case OPT_NAMEOPT:
 323             if (!set_nameopt(opt_arg()))
 324                 goto opthelp;
 325             break;
 326         case OPT_ENGINE:
 327             e = setup_engine(opt_arg(), 0);
 328             break;
 329         case OPT_C:
 330             C = ++num;
 331             break;
 332         case OPT_EMAIL:
 333             email = ++num;
 334             break;
 335         case OPT_OCSP_URI:
 336             ocsp_uri = ++num;
 337             break;
 338         case OPT_SERIAL:
 339             serial = ++num;
 340             break;
 341         case OPT_NEXT_SERIAL:
 342             next_serial = ++num;
 343             break;
 344         case OPT_MODULUS:
 345             modulus = ++num;
 346             break;
 347         case OPT_PUBKEY:
 348             pubkey = ++num;
 349             break;
 350         case OPT_X509TOREQ:
 351             x509req = ++num;
 352             break;
 353         case OPT_TEXT:
 354             text = ++num;
 355             break;
 356         case OPT_SUBJECT:
 357             subject = ++num;
 358             break;
 359         case OPT_ISSUER:
 360             issuer = ++num;
 361             break;
 362         case OPT_FINGERPRINT:
 363             fingerprint = ++num;
 364             break;
 365         case OPT_HASH:
 366             subject_hash = ++num;
 367             break;
 368         case OPT_ISSUER_HASH:
 369             issuer_hash = ++num;
 370             break;
 371         case OPT_PURPOSE:
 372             pprint = ++num;
 373             break;
 374         case OPT_STARTDATE:
 375             startdate = ++num;
 376             break;
 377         case OPT_ENDDATE:
 378             enddate = ++num;
 379             break;
 380         case OPT_NOOUT:
 381             noout = ++num;
 382             break;
 383         case OPT_EXT:
 384             ext = ++num;
 385             exts = opt_arg();
 386             break;
 387         case OPT_NOCERT:
 388             nocert = 1;
 389             break;
 390         case OPT_TRUSTOUT:
 391             trustout = 1;
 392             break;
 393         case OPT_CLRTRUST:
 394             clrtrust = ++num;
 395             break;
 396         case OPT_CLRREJECT:
 397             clrreject = ++num;
 398             break;
 399         case OPT_ALIAS:
 400             aliasout = ++num;
 401             break;
 402         case OPT_CACREATESERIAL:
 403             CA_createserial = ++num;
 404             break;
 405         case OPT_CLREXT:
 406             clrext = 1;
 407             break;
 408         case OPT_OCSPID:
 409             ocspid = ++num;
 410             break;
 411         case OPT_BADSIG:
 412             badsig = 1;
 413             break;
 414 #ifndef OPENSSL_NO_MD5
 415         case OPT_SUBJECT_HASH_OLD:
 416             subject_hash_old = ++num;
 417             break;
 418         case OPT_ISSUER_HASH_OLD:
 419             issuer_hash_old = ++num;
 420             break;
 421 #else
 422         case OPT_SUBJECT_HASH_OLD:
 423         case OPT_ISSUER_HASH_OLD:
 424             break;
 425 #endif
 426         case OPT_DATES:
 427             startdate = ++num;
 428             enddate = ++num;
 429             break;
 430         case OPT_CHECKEND:
 431             checkend = 1;
 432             {
 433                 intmax_t temp = 0;
 434                 if (!opt_imax(opt_arg(), &temp))
 435                     goto opthelp;
 436                 checkoffset = (time_t)temp;
 437                 if ((intmax_t)checkoffset != temp) {
 438                     BIO_printf(bio_err, "%s: checkend time out of range %s\n",
 439                                prog, opt_arg());
 440                     goto opthelp;
 441                 }
 442             }
 443             break;
 444         case OPT_CHECKHOST:
 445             checkhost = opt_arg();
 446             break;
 447         case OPT_CHECKEMAIL:
 448             checkemail = opt_arg();
 449             break;
 450         case OPT_CHECKIP:
 451             checkip = opt_arg();
 452             break;
 453         case OPT_PRESERVE_DATES:
 454             if (days != DEF_DAYS)
 455                 goto opthelp;
 456             preserve_dates = 1;
 457             break;
 458         case OPT_MD:
 459             if (!opt_md(opt_unknown(), &digest))
 460                 goto opthelp;
 461         }
 462     }
 463     argc = opt_num_rest();
 464     argv = opt_rest();
 465     if (argc != 0) {
 466         BIO_printf(bio_err, "%s: Unknown parameter %s\n", prog, argv[0]);
 467         goto opthelp;
 468     }
 469
 470     if (!app_passwd(passinarg, NULL, &passin, NULL)) {
 471         BIO_printf(bio_err, "Error getting password\n");
 472         goto end;
 473     }
 474
 475     if (!X509_STORE_set_default_paths(ctx)) {
 476         ERR_print_errors(bio_err);
 477         goto end;
 478     }
 479
 480     if (fkeyfile != NULL) {
 481         fkey = load_pubkey(fkeyfile, keyformat, 0, NULL, e, "Forced key");
 482         if (fkey == NULL)
 483             goto end;
 484     }
 485
 486     if ((CAkeyfile == NULL) && (CA_flag) && (CAformat == FORMAT_PEM)) {
 487         CAkeyfile = CAfile;
 488     } else if ((CA_flag) && (CAkeyfile == NULL)) {
 489         BIO_printf(bio_err,
 490                    "need to specify a CAkey if using the CA command\n");
 491         goto end;
 492     }
 493
 494     if (extfile != NULL) {
 495         X509V3_CTX ctx2;
 496         if ((extconf = app_load_config(extfile)) == NULL)
 497             goto end;
 498         if (extsect == NULL) {
 499             extsect = NCONF_get_string(extconf, "default", "extensions");
 500             if (extsect == NULL) {
 501                 ERR_clear_error();
 502                 extsect = "default";
 503             }
 504         }
 505         X509V3_set_ctx_test(&ctx2);
 506         X509V3_set_nconf(&ctx2, extconf);
 507         if (!X509V3_EXT_add_nconf(extconf, &ctx2, extsect, NULL)) {
 508             BIO_printf(bio_err,
 509                        "Error Loading extension section %s\n", extsect);
 510             ERR_print_errors(bio_err);
 511             goto end;
 512         }
 513     }
 514
 515     if (reqfile) {
 516         EVP_PKEY *pkey;
 517         BIO *in;
 518
 519         if (!sign_flag && !CA_flag) {
 520             BIO_printf(bio_err, "We need a private key to sign with\n");
 521             goto end;
 522         }
 523         in = bio_open_default(infile, 'r', informat);
 524         if (in == NULL)
 525             goto end;
 526         req = PEM_read_bio_X509_REQ(in, NULL, NULL, NULL);
 527         BIO_free(in);
 528
 529         if (req == NULL) {
 530             ERR_print_errors(bio_err);
 531             goto end;
 532         }
 533
 534         if ((pkey = X509_REQ_get0_pubkey(req)) == NULL) {
 535             BIO_printf(bio_err, "error unpacking public key\n");
 536             goto end;
 537         }
 538         i = X509_REQ_verify(req, pkey);
 539         if (i < 0) {
 540             BIO_printf(bio_err, "Signature verification error\n");
 541             ERR_print_errors(bio_err);
 542             goto end;
 543         }
 544         if (i == 0) {
 545             BIO_printf(bio_err,
 546                        "Signature did not match the certificate request\n");
 547             goto end;
 548         } else {
 549             BIO_printf(bio_err, "Signature ok\n");
 550         }
 551
 552         print_name(bio_err, "subject=", X509_REQ_get_subject_name(req),
 553                    get_nameopt());
 554
 555         if ((x = X509_new()) == NULL)
 556             goto end;
 557
 558         if (sno == NULL) {
 559             sno = ASN1_INTEGER_new();
 560             if (sno == NULL || !rand_serial(NULL, sno))
 561                 goto end;
 562             if (!X509_set_serialNumber(x, sno))
 563                 goto end;
 564             ASN1_INTEGER_free(sno);
 565             sno = NULL;
 566         } else if (!X509_set_serialNumber(x, sno)) {
 567             goto end;
 568         }
 569
 570         if (!X509_set_issuer_name(x, X509_REQ_get_subject_name(req)))
 571             goto end;
 572         if (!X509_set_subject_name(x, X509_REQ_get_subject_name(req)))
 573             goto end;
 574         if (!set_cert_times(x, NULL, NULL, days))
 575             goto end;
 576
 577         if (fkey != NULL) {
 578             X509_set_pubkey(x, fkey);
 579         } else {
 580             pkey = X509_REQ_get0_pubkey(req);
 581             X509_set_pubkey(x, pkey);
 582         }
 583     } else {
 584         x = load_cert(infile, informat, "Certificate");
 585     }
 586
 587     if (x == NULL)
 588         goto end;
 589     if (CA_flag) {
 590         xca = load_cert(CAfile, CAformat, "CA Certificate");
 591         if (xca == NULL)
 592             goto end;
 593     }
 594
 595     out = bio_open_default(outfile, 'w', outformat);
 596     if (out == NULL)
 597         goto end;
 598
 599     if (!noout || text || next_serial)
 600         OBJ_create("2.99999.3", "SET.ex3", "SET x509v3 extension 3");
 601
 602     if (alias)
 603         X509_alias_set1(x, (unsigned char *)alias, -1);
 604
 605     if (clrtrust)
 606         X509_trust_clear(x);
 607     if (clrreject)
 608         X509_reject_clear(x);
 609
 610     if (trust != NULL) {
 611         for (i = 0; i < sk_ASN1_OBJECT_num(trust); i++) {
 612             objtmp = sk_ASN1_OBJECT_value(trust, i);
 613             X509_add1_trust_object(x, objtmp);
 614         }
 615         objtmp = NULL;
 616     }
 617
 618     if (reject != NULL) {
 619         for (i = 0; i < sk_ASN1_OBJECT_num(reject); i++) {
 620             objtmp = sk_ASN1_OBJECT_value(reject, i);
 621             X509_add1_reject_object(x, objtmp);
 622         }
 623         objtmp = NULL;
 624     }
 625
 626     if (badsig) {
 627         const ASN1_BIT_STRING *signature;
 628
 629         X509_get0_signature(&signature, NULL, x);
 630         corrupt_signature(signature);
 631     }
 632
 633     if (num) {
 634         for (i = 1; i <= num; i++) {
 635             if (issuer == i) {
 636                 print_name(out, "issuer=", X509_get_issuer_name(x), get_nameopt());
 637             } else if (subject == i) {
 638                 print_name(out, "subject=",
 639                            X509_get_subject_name(x), get_nameopt());
 640             } else if (serial == i) {
 641                 BIO_printf(out, "serial=");
 642                 i2a_ASN1_INTEGER(out, X509_get_serialNumber(x));
 643                 BIO_printf(out, "\n");
 644             } else if (next_serial == i) {
 645                 ASN1_INTEGER *ser = X509_get_serialNumber(x);
 646                 BIGNUM *bnser = ASN1_INTEGER_to_BN(ser, NULL);
 647
 648                 if (!bnser)
 649                     goto end;
 650                 if (!BN_add_word(bnser, 1))
 651                     goto end;
 652                 ser = BN_to_ASN1_INTEGER(bnser, NULL);
 653                 if (!ser)
 654                     goto end;
 655                 BN_free(bnser);
 656                 i2a_ASN1_INTEGER(out, ser);
 657                 ASN1_INTEGER_free(ser);
 658                 BIO_puts(out, "\n");
 659             } else if ((email == i) || (ocsp_uri == i)) {
 660                 int j;
 661                 STACK_OF(OPENSSL_STRING) *emlst;
 662                 if (email == i)
 663                     emlst = X509_get1_email(x);
 664                 else
 665                     emlst = X509_get1_ocsp(x);
 666                 for (j = 0; j < sk_OPENSSL_STRING_num(emlst); j++)
 667                     BIO_printf(out, "%s\n",
 668                                sk_OPENSSL_STRING_value(emlst, j));
 669                 X509_email_free(emlst);
 670             } else if (aliasout == i) {
 671                 unsigned char *alstr;
 672                 alstr = X509_alias_get0(x, NULL);
 673                 if (alstr)
 674                     BIO_printf(out, "%s\n", alstr);
 675                 else
 676                     BIO_puts(out, "<No Alias>\n");
 677             } else if (subject_hash == i) {
 678                 BIO_printf(out, "%08lx\n", X509_subject_name_hash(x));
 679             }
 680 #ifndef OPENSSL_NO_MD5
 681             else if (subject_hash_old == i) {
 682                 BIO_printf(out, "%08lx\n", X509_subject_name_hash_old(x));
 683             }
 684 #endif
 685             else if (issuer_hash == i) {
 686                 BIO_printf(out, "%08lx\n", X509_issuer_name_hash(x));
 687             }
 688 #ifndef OPENSSL_NO_MD5
 689             else if (issuer_hash_old == i) {
 690                 BIO_printf(out, "%08lx\n", X509_issuer_name_hash_old(x));
 691             }
 692 #endif
 693             else if (pprint == i) {
 694                 X509_PURPOSE *ptmp;
 695                 int j;
 696                 BIO_printf(out, "Certificate purposes:\n");
 697                 for (j = 0; j < X509_PURPOSE_get_count(); j++) {
 698                     ptmp = X509_PURPOSE_get0(j);
 699                     purpose_print(out, x, ptmp);
 700                 }
 701             } else if (modulus == i) {
 702                 EVP_PKEY *pkey;
 703
 704                 pkey = X509_get0_pubkey(x);
 705                 if (pkey == NULL) {
 706                     BIO_printf(bio_err, "Modulus=unavailable\n");
 707                     ERR_print_errors(bio_err);
 708                     goto end;
 709                 }
 710                 BIO_printf(out, "Modulus=");
 711 #ifndef OPENSSL_NO_RSA
 712                 if (EVP_PKEY_id(pkey) == EVP_PKEY_RSA) {
 713                     const BIGNUM *n;
 714                     RSA_get0_key(EVP_PKEY_get0_RSA(pkey), &n, NULL, NULL);
 715                     BN_print(out, n);
 716                 } else
 717 #endif
 718 #ifndef OPENSSL_NO_DSA
 719                 if (EVP_PKEY_id(pkey) == EVP_PKEY_DSA) {
 720                     const BIGNUM *dsapub = NULL;
 721                     DSA_get0_key(EVP_PKEY_get0_DSA(pkey), &dsapub, NULL);
 722                     BN_print(out, dsapub);
 723                 } else
 724 #endif
 725                 {
 726                     BIO_printf(out, "Wrong Algorithm type");
 727                 }
 728                 BIO_printf(out, "\n");
 729             } else if (pubkey == i) {
 730                 EVP_PKEY *pkey;
 731
 732                 pkey = X509_get0_pubkey(x);
 733                 if (pkey == NULL) {
 734                     BIO_printf(bio_err, "Error getting public key\n");
 735                     ERR_print_errors(bio_err);
 736                     goto end;
 737                 }
 738                 PEM_write_bio_PUBKEY(out, pkey);
 739             } else if (C == i) {
 740                 unsigned char *d;
 741                 char *m;
 742                 int len;
 743
 744                 print_name(out, "/*\n"
 745                                 " * Subject: ", X509_get_subject_name(x), get_nameopt());
 746                 print_name(out, " * Issuer:  ", X509_get_issuer_name(x), get_nameopt());
 747                 BIO_puts(out, " */\n");
 748
 749                 len = i2d_X509(x, NULL);
 750                 m = app_malloc(len, "x509 name buffer");
 751                 d = (unsigned char *)m;
 752                 len = i2d_X509_NAME(X509_get_subject_name(x), &d);
 753                 print_array(out, "the_subject_name", len, (unsigned char *)m);
 754                 d = (unsigned char *)m;
 755                 len = i2d_X509_PUBKEY(X509_get_X509_PUBKEY(x), &d);
 756                 print_array(out, "the_public_key", len, (unsigned char *)m);
 757                 d = (unsigned char *)m;
 758                 len = i2d_X509(x, &d);
 759                 print_array(out, "the_certificate", len, (unsigned char *)m);
 760                 OPENSSL_free(m);
 761             } else if (text == i) {
 762                 X509_print_ex(out, x, get_nameopt(), certflag);
 763             } else if (startdate == i) {
 764                 BIO_puts(out, "notBefore=");
 765                 ASN1_TIME_print(out, X509_get0_notBefore(x));
 766                 BIO_puts(out, "\n");
 767             } else if (enddate == i) {
 768                 BIO_puts(out, "notAfter=");
 769                 ASN1_TIME_print(out, X509_get0_notAfter(x));
 770                 BIO_puts(out, "\n");
 771             } else if (fingerprint == i) {
 772                 int j;
 773                 unsigned int n;
 774                 unsigned char md[EVP_MAX_MD_SIZE];
 775                 const EVP_MD *fdig = digest;
 776
 777                 if (fdig == NULL)
 778                     fdig = EVP_sha1();
 779
 780                 if (!X509_digest(x, fdig, md, &n)) {
 781                     BIO_printf(bio_err, "out of memory\n");
 782                     goto end;
 783                 }
 784                 BIO_printf(out, "%s Fingerprint=",
 785                            OBJ_nid2sn(EVP_MD_type(fdig)));
 786                 for (j = 0; j < (int)n; j++) {
 787                     BIO_printf(out, "%02X%c", md[j], (j + 1 == (int)n)
 788                                ? '\n' : ':');
 789                 }
 790             }
 791
 792             /* should be in the library */
 793             else if ((sign_flag == i) && (x509req == 0)) {
 794                 BIO_printf(bio_err, "Getting Private key\n");
 795                 if (Upkey == NULL) {
 796                     Upkey = load_key(keyfile, keyformat, 0,
 797                                      passin, e, "Private key");
 798                     if (Upkey == NULL)
 799                         goto end;
 800                 }
 801
 802                 if (!sign(x, Upkey, days, clrext, digest, extconf, extsect, preserve_dates))
 803                     goto end;
 804             } else if (CA_flag == i) {
 805                 BIO_printf(bio_err, "Getting CA Private Key\n");
 806                 if (CAkeyfile != NULL) {
 807                     CApkey = load_key(CAkeyfile, CAkeyformat,
 808                                       0, passin, e, "CA Private Key");
 809                     if (CApkey == NULL)
 810                         goto end;
 811                 }
 812
 813                 if (!x509_certify(ctx, CAfile, digest, x, xca,
 814                                   CApkey, sigopts,
 815                                   CAserial, CA_createserial, days, clrext,
 816                                   extconf, extsect, sno, reqfile, preserve_dates))
 817                     goto end;
 818             } else if (x509req == i) {
 819                 EVP_PKEY *pk;
 820
 821                 BIO_printf(bio_err, "Getting request Private Key\n");
 822                 if (keyfile == NULL) {
 823                     BIO_printf(bio_err, "no request key file specified\n");
 824                     goto end;
 825                 } else {
 826                     pk = load_key(keyfile, keyformat, 0,
 827                                   passin, e, "request key");
 828                     if (pk == NULL)
 829                         goto end;
 830                 }
 831
 832                 BIO_printf(bio_err, "Generating certificate request\n");
 833
 834                 rq = X509_to_X509_REQ(x, pk, digest);
 835                 EVP_PKEY_free(pk);
 836                 if (rq == NULL) {
 837                     ERR_print_errors(bio_err);
 838                     goto end;
 839                 }
 840                 if (!noout) {
 841                     X509_REQ_print_ex(out, rq, get_nameopt(), X509_FLAG_COMPAT);
 842                     PEM_write_bio_X509_REQ(out, rq);
 843                 }
 844                 noout = 1;
 845             } else if (ocspid == i) {
 846                 X509_ocspid_print(out, x);
 847             } else if (ext == i) {
 848                 print_x509v3_exts(out, x, exts);
 849             }
 850         }
 851     }
 852
 853     if (checkend) {
 854         time_t tcheck = time(NULL) + checkoffset;
 855
 856         if (X509_cmp_time(X509_get0_notAfter(x), &tcheck) < 0) {
 857             BIO_printf(out, "Certificate will expire\n");
 858             ret = 1;
 859         } else {
 860             BIO_printf(out, "Certificate will not expire\n");
 861             ret = 0;
 862         }
 863         goto end;
 864     }
 865
 866     print_cert_checks(out, x, checkhost, checkemail, checkip);
 867
 868     if (noout || nocert) {
 869         ret = 0;
 870         goto end;
 871     }
 872
 873     if (outformat == FORMAT_ASN1) {
 874         i = i2d_X509_bio(out, x);
 875     } else if (outformat == FORMAT_PEM) {
 876         if (trustout)
 877             i = PEM_write_bio_X509_AUX(out, x);
 878         else
 879             i = PEM_write_bio_X509(out, x);
 880     } else {
 881         BIO_printf(bio_err, "bad output format specified for outfile\n");
 882         goto end;
 883     }
 884     if (!i) {
 885         BIO_printf(bio_err, "unable to write certificate\n");
 886         ERR_print_errors(bio_err);
 887         goto end;
 888     }
 889     ret = 0;
 890  end:
 891     NCONF_free(extconf);
 892     BIO_free_all(out);
 893     X509_STORE_free(ctx);
 894     X509_REQ_free(req);
 895     X509_free(x);
 896     X509_free(xca);
 897     EVP_PKEY_free(Upkey);
 898     EVP_PKEY_free(CApkey);
 899     EVP_PKEY_free(fkey);
 900     sk_OPENSSL_STRING_free(sigopts);
 901     X509_REQ_free(rq);
 902     ASN1_INTEGER_free(sno);
 903     sk_ASN1_OBJECT_pop_free(trust, ASN1_OBJECT_free);
 904     sk_ASN1_OBJECT_pop_free(reject, ASN1_OBJECT_free);
 905     ASN1_OBJECT_free(objtmp);
 906     release_engine(e);
 907     OPENSSL_free(passin);
 908     return ret;
 909 }
 910
 911 static ASN1_INTEGER *x509_load_serial(const char *CAfile,
 912                                       const char *serialfile, int create)
 913 {
 914     char *buf = NULL;
 915     ASN1_INTEGER *bs = NULL;
 916     BIGNUM *serial = NULL;
 917
 918     if (serialfile == NULL) {
 919         const char *p = strrchr(CAfile, '.');
 920         size_t len = p != NULL ? (size_t)(p - CAfile) : strlen(CAfile);
 921
 922         buf = app_malloc(len + sizeof(POSTFIX), "serial# buffer");
 923         memcpy(buf, CAfile, len);
 924         memcpy(buf + len, POSTFIX, sizeof(POSTFIX));
 925         serialfile = buf;
 926     }
 927
 928     serial = load_serial(serialfile, create, NULL);
 929     if (serial == NULL)
 930         goto end;
 931
 932     if (!BN_add_word(serial, 1)) {
 933         BIO_printf(bio_err, "add_word failure\n");
 934         goto end;
 935     }
 936
 937     if (!save_serial(serialfile, NULL, serial, &bs))
 938         goto end;
 939
 940  end:
 941     OPENSSL_free(buf);
 942     BN_free(serial);
 943     return bs;
 944 }
 945
 946 static int x509_certify(X509_STORE *ctx, const char *CAfile, const EVP_MD *digest,
 947                         X509 *x, X509 *xca, EVP_PKEY *pkey,
 948                         STACK_OF(OPENSSL_STRING) *sigopts,
 949                         const char *serialfile, int create,
 950                         int days, int clrext, CONF *conf, const char *section,
 951                         ASN1_INTEGER *sno, int reqfile, int preserve_dates)
 952 {
 953     int ret = 0;
 954     ASN1_INTEGER *bs = NULL;
 955     X509_STORE_CTX *xsc = NULL;
 956     EVP_PKEY *upkey;
 957
 958     upkey = X509_get0_pubkey(xca);
 959     if (upkey == NULL) {
 960         BIO_printf(bio_err, "Error obtaining CA X509 public key\n");
 961         goto end;
 962     }
 963     EVP_PKEY_copy_parameters(upkey, pkey);
 964
 965     xsc = X509_STORE_CTX_new();
 966     if (xsc == NULL || !X509_STORE_CTX_init(xsc, ctx, x, NULL)) {
 967         BIO_printf(bio_err, "Error initialising X509 store\n");
 968         goto end;
 969     }
 970     if (sno)
 971         bs = sno;
 972     else if ((bs = x509_load_serial(CAfile, serialfile, create)) == NULL)
 973         goto end;
 974
 975     /*
 976      * NOTE: this certificate can/should be self signed, unless it was a
 977      * certificate request in which case it is not.
 978      */
 979     X509_STORE_CTX_set_cert(xsc, x);
 980     X509_STORE_CTX_set_flags(xsc, X509_V_FLAG_CHECK_SS_SIGNATURE);
 981     if (!reqfile && X509_verify_cert(xsc) <= 0)
 982         goto end;
 983
 984     if (!X509_check_private_key(xca, pkey)) {
 985         BIO_printf(bio_err,
 986                    "CA certificate and CA private key do not match\n");
 987         goto end;
 988     }
 989
 990     if (!X509_set_issuer_name(x, X509_get_subject_name(xca)))
 991         goto end;
 992     if (!X509_set_serialNumber(x, bs))
 993         goto end;
 994
 995     if (!preserve_dates && !set_cert_times(x, NULL, NULL, days))
 996         goto end;
 997
 998     if (clrext) {
 999         while (X509_get_ext_count(x) > 0)
1000             X509_delete_ext(x, 0);
1001     }
1002
1003     if (conf != NULL) {
1004         X509V3_CTX ctx2;
1005         X509_set_version(x, 2); /* version 3 certificate */
1006         X509V3_set_ctx(&ctx2, xca, x, NULL, NULL, 0);
1007         X509V3_set_nconf(&ctx2, conf);
1008         if (!X509V3_EXT_add_nconf(conf, &ctx2, section, x))
1009             goto end;
1010     }
1011
1012     if (!do_X509_sign(x, pkey, digest, sigopts))
1013         goto end;
1014     ret = 1;
1015  end:
1016     X509_STORE_CTX_free(xsc);
1017     if (!ret)
1018         ERR_print_errors(bio_err);
1019     if (!sno)
1020         ASN1_INTEGER_free(bs);
1021     return ret;
1022 }
1023
1024 static int callb(int ok, X509_STORE_CTX *ctx)
1025 {
1026     int err;
1027     X509 *err_cert;
1028
1029     /*
1030      * it is ok to use a self signed certificate This case will catch both
1031      * the initial ok == 0 and the final ok == 1 calls to this function
1032      */
1033     err = X509_STORE_CTX_get_error(ctx);
1034     if (err == X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT)
1035         return 1;
1036
1037     /*
1038      * BAD we should have gotten an error.  Normally if everything worked
1039      * X509_STORE_CTX_get_error(ctx) will still be set to
1040      * DEPTH_ZERO_SELF_....
1041      */
1042     if (ok) {
1043         BIO_printf(bio_err,
1044                    "error with certificate to be certified - should be self signed\n");
1045         return 0;
1046     } else {
1047         err_cert = X509_STORE_CTX_get_current_cert(ctx);
1048         print_name(bio_err, NULL, X509_get_subject_name(err_cert), 0);
1049         BIO_printf(bio_err,
1050                    "error with certificate - error %d at depth %d\n%s\n", err,
1051                    X509_STORE_CTX_get_error_depth(ctx),
1052                    X509_verify_cert_error_string(err));
1053         return 1;
1054     }
1055 }
1056
1057 /* self sign */
1058 static int sign(X509 *x, EVP_PKEY *pkey, int days, int clrext,
1059                 const EVP_MD *digest, CONF *conf, const char *section,
1060                 int preserve_dates)
1061 {
1062
1063     if (!X509_set_issuer_name(x, X509_get_subject_name(x)))
1064         goto err;
1065     if (!preserve_dates && !set_cert_times(x, NULL, NULL, days))
1066         goto err;
1067     if (!X509_set_pubkey(x, pkey))
1068         goto err;
1069     if (clrext) {
1070         while (X509_get_ext_count(x) > 0)
1071             X509_delete_ext(x, 0);
1072     }
1073     if (conf != NULL) {
1074         X509V3_CTX ctx;
1075         X509_set_version(x, 2); /* version 3 certificate */
1076         X509V3_set_ctx(&ctx, x, x, NULL, NULL, 0);
1077         X509V3_set_nconf(&ctx, conf);
1078         if (!X509V3_EXT_add_nconf(conf, &ctx, section, x))
1079             goto err;
1080     }
1081     if (!X509_sign(x, pkey, digest))
1082         goto err;
1083     return 1;
1084  err:
1085     ERR_print_errors(bio_err);
1086     return 0;
1087 }
1088
1089 static int purpose_print(BIO *bio, X509 *cert, X509_PURPOSE *pt)
1090 {
1091     int id, i, idret;
1092     const char *pname;
1093     id = X509_PURPOSE_get_id(pt);
1094     pname = X509_PURPOSE_get0_name(pt);
1095     for (i = 0; i < 2; i++) {
1096         idret = X509_check_purpose(cert, id, i);
1097         BIO_printf(bio, "%s%s : ", pname, i ? " CA" : "");
1098         if (idret == 1)
1099             BIO_printf(bio, "Yes\n");
1100         else if (idret == 0)
1101             BIO_printf(bio, "No\n");
1102         else
1103             BIO_printf(bio, "Yes (WARNING code=%d)\n", idret);
1104     }
1105     return 1;
1106 }
1107
1108 static int parse_ext_names(char *names, const char **result)
1109 {
1110     char *p, *q;
1111     int cnt = 0, len = 0;
1112
1113     p = q = names;
1114     len = strlen(names);
1115
1116     while (q - names <= len) {
1117         if (*q != ',' && *q != '\0') {
1118             q++;
1119             continue;
1120         }
1121         if (p != q) {
1122             /* found */
1123             if (result != NULL) {
1124                 result[cnt] = p;
1125                 *q = '\0';
1126             }
1127             cnt++;
1128         }
1129         p = ++q;
1130     }
1131
1132     return cnt;
1133 }
1134
1135 static int print_x509v3_exts(BIO *bio, X509 *x, const char *ext_names)
1136 {
1137     const STACK_OF(X509_EXTENSION) *exts = NULL;
1138     STACK_OF(X509_EXTENSION) *exts2 = NULL;
1139     X509_EXTENSION *ext = NULL;
1140     ASN1_OBJECT *obj;
1141     int i, j, ret = 0, num, nn = 0;
1142     const char *sn, **names = NULL;
1143     char *tmp_ext_names = NULL;
1144
1145     exts = X509_get0_extensions(x);
1146     if ((num = sk_X509_EXTENSION_num(exts)) <= 0) {
1147         BIO_printf(bio, "No extensions in certificate\n");
1148         ret = 1;
1149         goto end;
1150     }
1151
1152     /* parse comma separated ext name string */
1153     if ((tmp_ext_names = OPENSSL_strdup(ext_names)) == NULL)
1154         goto end;
1155     if ((nn = parse_ext_names(tmp_ext_names, NULL)) == 0) {
1156         BIO_printf(bio, "Invalid extension names: %s\n", ext_names);
1157         goto end;
1158     }
1159     if ((names = OPENSSL_malloc(sizeof(char *) * nn)) == NULL)
1160         goto end;
1161     parse_ext_names(tmp_ext_names, names);
1162
1163     for (i = 0; i < num; i++) {
1164         ext = sk_X509_EXTENSION_value(exts, i);
1165
1166         /* check if this ext is what we want */
1167         obj = X509_EXTENSION_get_object(ext);
1168         sn = OBJ_nid2sn(OBJ_obj2nid(obj));
1169         if (sn == NULL || strcmp(sn, "UNDEF") == 0)
1170             continue;
1171
1172         for (j = 0; j < nn; j++) {
1173             if (strcmp(sn, names[j]) == 0) {
1174                 /* push the extension into a new stack */
1175                 if (exts2 == NULL
1176                     && (exts2 = sk_X509_EXTENSION_new_null()) == NULL)
1177                     goto end;
1178                 if (!sk_X509_EXTENSION_push(exts2, ext))
1179                     goto end;
1180             }
1181         }
1182     }
1183
1184     if (!sk_X509_EXTENSION_num(exts2)) {
1185         BIO_printf(bio, "No extensions matched with %s\n", ext_names);
1186         ret = 1;
1187         goto end;
1188     }
1189
1190     ret = X509V3_extensions_print(bio, NULL, exts2, 0, 0);
1191  end:
1192     sk_X509_EXTENSION_free(exts2);
1193     OPENSSL_free(names);
1194     OPENSSL_free(tmp_ext_names);
1195     return ret;
1196 }