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 #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 DEFINE_STACK_OF(ASN1_OBJECT)
  32 DEFINE_STACK_OF(X509_EXTENSION)
  33 DEFINE_STACK_OF_STRING()
  34
  35 #undef POSTFIX
  36 #define POSTFIX ".srl"
  37 #define DEF_DAYS        30
  38
  39 static int callb(int ok, X509_STORE_CTX *ctx);
  40 static int sign(X509 *x, EVP_PKEY *pkey, EVP_PKEY *fkey,
  41                 STACK_OF(OPENSSL_STRING) *sigopts,
  42                 int days, int clrext,
  43                 const EVP_MD *digest, CONF *conf, const char *section,
  44                 int preserve_dates);
  45 static int x509_certify(X509_STORE *ctx, const char *CAfile, const EVP_MD *digest,
  46                         X509 *x, X509 *xca, EVP_PKEY *pkey,
  47                         STACK_OF(OPENSSL_STRING) *sigopts, const char *serialfile,
  48                         int create, int days, int clrext, CONF *conf,
  49                         const char *section, ASN1_INTEGER *sno, int reqfile,
  50                         int preserve_dates);
  51 static int purpose_print(BIO *bio, X509 *cert, X509_PURPOSE *pt);
  52 static int print_x509v3_exts(BIO *bio, X509 *x, const char *exts);
  53
  54 typedef enum OPTION_choice {
  55     OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
  56     OPT_INFORM, OPT_OUTFORM, OPT_KEYFORM, OPT_REQ, OPT_CAFORM,
  57     OPT_CAKEYFORM, OPT_VFYOPT, OPT_SIGOPT, OPT_DAYS, OPT_PASSIN, OPT_EXTFILE,
  58     OPT_EXTENSIONS, OPT_IN, OPT_OUT, OPT_SIGNKEY, OPT_CA, OPT_CAKEY,
  59     OPT_CASERIAL, OPT_SET_SERIAL, OPT_NEW, OPT_FORCE_PUBKEY, OPT_SUBJ,
  60     OPT_ADDTRUST, OPT_ADDREJECT, OPT_SETALIAS, OPT_CERTOPT, OPT_NAMEOPT,
  61     OPT_C, OPT_EMAIL, OPT_OCSP_URI, OPT_SERIAL, OPT_NEXT_SERIAL,
  62     OPT_MODULUS, OPT_PUBKEY, OPT_X509TOREQ, OPT_TEXT, OPT_HASH,
  63     OPT_ISSUER_HASH, OPT_SUBJECT, OPT_ISSUER, OPT_FINGERPRINT, OPT_DATES,
  64     OPT_PURPOSE, OPT_STARTDATE, OPT_ENDDATE, OPT_CHECKEND, OPT_CHECKHOST,
  65     OPT_CHECKEMAIL, OPT_CHECKIP, OPT_NOOUT, OPT_TRUSTOUT, OPT_CLRTRUST,
  66     OPT_CLRREJECT, OPT_ALIAS, OPT_CACREATESERIAL, OPT_CLREXT, OPT_OCSPID,
  67     OPT_SUBJECT_HASH_OLD,
  68     OPT_ISSUER_HASH_OLD,
  69     OPT_BADSIG, OPT_MD, OPT_ENGINE, OPT_NOCERT, OPT_PRESERVE_DATES,
  70     OPT_R_ENUM, OPT_PROV_ENUM, OPT_EXT
  71 } OPTION_CHOICE;
  72
  73 const OPTIONS x509_options[] = {
  74     OPT_SECTION("General"),
  75     {"help", OPT_HELP, '-', "Display this summary"},
  76 #ifndef OPENSSL_NO_ENGINE
  77     {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
  78 #endif
  79
  80     {"inform", OPT_INFORM, 'f',
  81      "Input format - default PEM (one of DER or PEM)"},
  82     {"in", OPT_IN, '<', "Input file - default stdin"},
  83     {"passin", OPT_PASSIN, 's', "Private key password/pass-phrase source"},
  84     {"outform", OPT_OUTFORM, 'f',
  85      "Output format - default PEM (one of DER or PEM)"},
  86     {"out", OPT_OUT, '>', "Output file - default stdout"},
  87     {"keyform", OPT_KEYFORM, 'E', "Private key format - default PEM"},
  88     {"req", OPT_REQ, '-', "Input is a certificate request, sign and output"},
  89     {"vfyopt", OPT_VFYOPT, 's', "Verification parameter in n:v form"},
  90
  91     OPT_SECTION("Output"),
  92     {"serial", OPT_SERIAL, '-', "Print serial number value"},
  93     {"subject_hash", OPT_HASH, '-', "Print subject hash value"},
  94     {"issuer_hash", OPT_ISSUER_HASH, '-', "Print issuer hash value"},
  95     {"hash", OPT_HASH, '-', "Synonym for -subject_hash"},
  96     {"subject", OPT_SUBJECT, '-', "Print subject DN"},
  97     {"issuer", OPT_ISSUER, '-', "Print issuer DN"},
  98     {"email", OPT_EMAIL, '-', "Print email address(es)"},
  99     {"purpose", OPT_PURPOSE, '-', "Print out certificate purposes"},
 100     {"modulus", OPT_MODULUS, '-', "Print the RSA key modulus"},
 101     {"pubkey", OPT_PUBKEY, '-', "Output the public key"},
 102     {"fingerprint", OPT_FINGERPRINT, '-', "Print the certificate fingerprint"},
 103     {"alias", OPT_ALIAS, '-', "Output certificate alias"},
 104     {"noout", OPT_NOOUT, '-', "No output, just status"},
 105     {"ocspid", OPT_OCSPID, '-',
 106      "Print OCSP hash values for the subject name and public key"},
 107     {"ocsp_uri", OPT_OCSP_URI, '-', "Print OCSP Responder URL(s)"},
 108     {"nocert", OPT_NOCERT, '-', "No certificate output"},
 109     {"trustout", OPT_TRUSTOUT, '-', "Output a trusted certificate"},
 110     {"x509toreq", OPT_X509TOREQ, '-',
 111      "Output a certification request object"},
 112     {"checkend", OPT_CHECKEND, 'M',
 113      "Check whether the cert expires in the next arg seconds"},
 114     {OPT_MORE_STR, 1, 1, "Exit 1 if so, 0 if not"},
 115     {"text", OPT_TEXT, '-', "Print the certificate in text form"},
 116     {"ext", OPT_EXT, 's', "Print various X509V3 extensions"},
 117     {"C", OPT_C, '-', "Print out C code forms"},
 118 #ifndef OPENSSL_NO_MD5
 119     {"subject_hash_old", OPT_SUBJECT_HASH_OLD, '-',
 120      "Print old-style (MD5) issuer hash value"},
 121     {"issuer_hash_old", OPT_ISSUER_HASH_OLD, '-',
 122      "Print old-style (MD5) subject hash value"},
 123 #endif
 124     {"nameopt", OPT_NAMEOPT, 's', "Certificate subject/issuer name printing options"},
 125
 126     OPT_SECTION("Certificate"),
 127     {"startdate", OPT_STARTDATE, '-', "Set notBefore field"},
 128     {"enddate", OPT_ENDDATE, '-', "Set notAfter field"},
 129     {"dates", OPT_DATES, '-', "Both Before and After dates"},
 130     {"clrtrust", OPT_CLRTRUST, '-', "Clear all trusted purposes"},
 131     {"clrext", OPT_CLREXT, '-', "Clear all certificate extensions"},
 132     {"addtrust", OPT_ADDTRUST, 's', "Trust certificate for a given purpose"},
 133     {"addreject", OPT_ADDREJECT, 's',
 134      "Reject certificate for a given purpose"},
 135     {"setalias", OPT_SETALIAS, 's', "Set certificate alias"},
 136     {"days", OPT_DAYS, 'n',
 137      "How long till expiry of a signed certificate - def 30 days"},
 138     {"signkey", OPT_SIGNKEY, 's', "Self sign cert with arg"},
 139     {"set_serial", OPT_SET_SERIAL, 's', "Serial number to use"},
 140     {"extensions", OPT_EXTENSIONS, 's', "Section from config file to use"},
 141     {"certopt", OPT_CERTOPT, 's', "Various certificate text options"},
 142     {"checkhost", OPT_CHECKHOST, 's', "Check certificate matches host"},
 143     {"checkemail", OPT_CHECKEMAIL, 's', "Check certificate matches email"},
 144     {"checkip", OPT_CHECKIP, 's', "Check certificate matches ipaddr"},
 145     {"force_pubkey", OPT_FORCE_PUBKEY, '<', "Force the key to put inside certificate"},
 146     {"subj", OPT_SUBJ, 's', "Set or override certificate subject (and issuer)"},
 147
 148     OPT_SECTION("CA"),
 149     {"CA", OPT_CA, '<', "Set the CA certificate, must be PEM format"},
 150     {"CAkey", OPT_CAKEY, 's',
 151      "The CA key, must be PEM format; if not in CAfile"},
 152     {"extfile", OPT_EXTFILE, '<', "File with X509V3 extensions to add"},
 153     OPT_R_OPTIONS,
 154     OPT_PROV_OPTIONS,
 155     {"CAform", OPT_CAFORM, 'F', "CA format - default PEM"},
 156     {"CAkeyform", OPT_CAKEYFORM, 'E', "CA key format - default PEM"},
 157     {"sigopt", OPT_SIGOPT, 's', "Signature parameter in n:v form"},
 158     {"CAcreateserial", OPT_CACREATESERIAL, '-',
 159      "Create serial number file if it does not exist"},
 160     {"CAserial", OPT_CASERIAL, 's', "Serial file"},
 161     {"new", OPT_NEW, '-', "Generate a certificate from scratch"},
 162     {"next_serial", OPT_NEXT_SERIAL, '-', "Increment current certificate serial number"},
 163     {"clrreject", OPT_CLRREJECT, '-',
 164      "Clears all the prohibited or rejected uses of the certificate"},
 165     {"badsig", OPT_BADSIG, '-', "Corrupt last byte of certificate signature (for test)"},
 166     {"", OPT_MD, '-', "Any supported digest"},
 167     {"preserve_dates", OPT_PRESERVE_DATES, '-', "preserve existing dates when signing"},
 168     {NULL}
 169 };
 170
 171 int x509_main(int argc, char **argv)
 172 {
 173     ASN1_INTEGER *sno = NULL;
 174     ASN1_OBJECT *objtmp = NULL;
 175     BIO *out = NULL;
 176     CONF *extconf = NULL;
 177     EVP_PKEY *Upkey = NULL, *CApkey = NULL, *fkey = NULL;
 178     int newcert = 0;
 179     char *subj = NULL;
 180     X509_NAME *fsubj = NULL;
 181     const unsigned long chtype = MBSTRING_ASC;
 182     const int multirdn = 0;
 183     STACK_OF(ASN1_OBJECT) *trust = NULL, *reject = NULL;
 184     STACK_OF(OPENSSL_STRING) *sigopts = NULL, *vfyopts = NULL;
 185     X509 *x = NULL, *xca = NULL;
 186     X509_REQ *req = NULL, *rq = NULL;
 187     X509_STORE *ctx = NULL;
 188     const EVP_MD *digest = NULL;
 189     char *CAkeyfile = NULL, *CAserial = NULL, *fkeyfile = NULL, *alias = NULL;
 190     char *checkhost = NULL, *checkemail = NULL, *checkip = NULL, *exts = NULL;
 191     char *extsect = NULL, *extfile = NULL, *passin = NULL, *passinarg = NULL;
 192     char *infile = NULL, *outfile = NULL, *keyfile = NULL, *CAfile = NULL;
 193     char *prog;
 194     int x509req = 0, days = DEF_DAYS, modulus = 0, pubkey = 0, pprint = 0;
 195     int C = 0, CAformat = FORMAT_PEM, CAkeyformat = FORMAT_PEM;
 196     int fingerprint = 0, reqfile = 0, checkend = 0;
 197     int informat = FORMAT_PEM, outformat = FORMAT_PEM, keyformat = FORMAT_PEM;
 198     int next_serial = 0, subject_hash = 0, issuer_hash = 0, ocspid = 0;
 199     int noout = 0, sign_flag = 0, CA_flag = 0, CA_createserial = 0, email = 0;
 200     int ocsp_uri = 0, trustout = 0, clrtrust = 0, clrreject = 0, aliasout = 0;
 201     int ret = 1, i, num = 0, badsig = 0, clrext = 0, nocert = 0;
 202     int text = 0, serial = 0, subject = 0, issuer = 0, startdate = 0, ext = 0;
 203     int enddate = 0;
 204     time_t checkoffset = 0;
 205     unsigned long certflag = 0;
 206     int preserve_dates = 0;
 207     OPTION_CHOICE o;
 208     ENGINE *e = NULL;
 209 #ifndef OPENSSL_NO_MD5
 210     int subject_hash_old = 0, issuer_hash_old = 0;
 211 #endif
 212
 213     ctx = X509_STORE_new();
 214     if (ctx == NULL)
 215         goto end;
 216     X509_STORE_set_verify_cb(ctx, callb);
 217
 218     prog = opt_init(argc, argv, x509_options);
 219     while ((o = opt_next()) != OPT_EOF) {
 220         switch (o) {
 221         case OPT_EOF:
 222         case OPT_ERR:
 223  opthelp:
 224             BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
 225             goto end;
 226         case OPT_HELP:
 227             opt_help(x509_options);
 228             ret = 0;
 229             goto end;
 230         case OPT_INFORM:
 231             if (!opt_format(opt_arg(), OPT_FMT_ANY, &informat))
 232                 goto opthelp;
 233             break;
 234         case OPT_IN:
 235             infile = opt_arg();
 236             break;
 237         case OPT_OUTFORM:
 238             if (!opt_format(opt_arg(), OPT_FMT_ANY, &outformat))
 239                 goto opthelp;
 240             break;
 241         case OPT_KEYFORM:
 242             if (!opt_format(opt_arg(), OPT_FMT_PDE, &keyformat))
 243                 goto opthelp;
 244             break;
 245         case OPT_CAFORM:
 246             if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &CAformat))
 247                 goto opthelp;
 248             break;
 249         case OPT_CAKEYFORM:
 250             if (!opt_format(opt_arg(), OPT_FMT_PDE, &CAkeyformat))
 251                 goto opthelp;
 252             break;
 253         case OPT_OUT:
 254             outfile = opt_arg();
 255             break;
 256         case OPT_REQ:
 257             reqfile = 1;
 258             break;
 259
 260         case OPT_SIGOPT:
 261             if (!sigopts)
 262                 sigopts = sk_OPENSSL_STRING_new_null();
 263             if (!sigopts || !sk_OPENSSL_STRING_push(sigopts, opt_arg()))
 264                 goto opthelp;
 265             break;
 266         case OPT_VFYOPT:
 267             if (!vfyopts)
 268                 vfyopts = sk_OPENSSL_STRING_new_null();
 269             if (!vfyopts || !sk_OPENSSL_STRING_push(vfyopts, opt_arg()))
 270                 goto opthelp;
 271             break;
 272         case OPT_DAYS:
 273             if (preserve_dates)
 274                 goto opthelp;
 275             days = atoi(opt_arg());
 276             break;
 277         case OPT_PASSIN:
 278             passinarg = opt_arg();
 279             break;
 280         case OPT_EXTFILE:
 281             extfile = opt_arg();
 282             break;
 283         case OPT_R_CASES:
 284             if (!opt_rand(o))
 285                 goto end;
 286             break;
 287         case OPT_PROV_CASES:
 288             if (!opt_provider(o))
 289                 goto end;
 290             break;
 291         case OPT_EXTENSIONS:
 292             extsect = opt_arg();
 293             break;
 294         case OPT_SIGNKEY:
 295             keyfile = opt_arg();
 296             sign_flag = ++num;
 297             break;
 298         case OPT_CA:
 299             CAfile = opt_arg();
 300             CA_flag = ++num;
 301             break;
 302         case OPT_CAKEY:
 303             CAkeyfile = opt_arg();
 304             break;
 305         case OPT_CASERIAL:
 306             CAserial = opt_arg();
 307             break;
 308         case OPT_SET_SERIAL:
 309             if (sno != NULL) {
 310                 BIO_printf(bio_err, "Serial number supplied twice\n");
 311                 goto opthelp;
 312             }
 313             if ((sno = s2i_ASN1_INTEGER(NULL, opt_arg())) == NULL)
 314                 goto opthelp;
 315             break;
 316         case OPT_NEW:
 317             newcert = 1;
 318             break;
 319         case OPT_FORCE_PUBKEY:
 320             fkeyfile = opt_arg();
 321             break;
 322         case OPT_SUBJ:
 323             subj = opt_arg();
 324             break;
 325         case OPT_ADDTRUST:
 326             if ((objtmp = OBJ_txt2obj(opt_arg(), 0)) == NULL) {
 327                 BIO_printf(bio_err,
 328                            "%s: Invalid trust object value %s\n",
 329                            prog, opt_arg());
 330                 goto opthelp;
 331             }
 332             if (trust == NULL && (trust = sk_ASN1_OBJECT_new_null()) == NULL)
 333                 goto end;
 334             sk_ASN1_OBJECT_push(trust, objtmp);
 335             objtmp = NULL;
 336             trustout = 1;
 337             break;
 338         case OPT_ADDREJECT:
 339             if ((objtmp = OBJ_txt2obj(opt_arg(), 0)) == NULL) {
 340                 BIO_printf(bio_err,
 341                            "%s: Invalid reject object value %s\n",
 342                            prog, opt_arg());
 343                 goto opthelp;
 344             }
 345             if (reject == NULL
 346                 && (reject = sk_ASN1_OBJECT_new_null()) == NULL)
 347                 goto end;
 348             sk_ASN1_OBJECT_push(reject, objtmp);
 349             objtmp = NULL;
 350             trustout = 1;
 351             break;
 352         case OPT_SETALIAS:
 353             alias = opt_arg();
 354             trustout = 1;
 355             break;
 356         case OPT_CERTOPT:
 357             if (!set_cert_ex(&certflag, opt_arg()))
 358                 goto opthelp;
 359             break;
 360         case OPT_NAMEOPT:
 361             if (!set_nameopt(opt_arg()))
 362                 goto opthelp;
 363             break;
 364         case OPT_ENGINE:
 365             e = setup_engine(opt_arg(), 0);
 366             break;
 367         case OPT_C:
 368             C = ++num;
 369             break;
 370         case OPT_EMAIL:
 371             email = ++num;
 372             break;
 373         case OPT_OCSP_URI:
 374             ocsp_uri = ++num;
 375             break;
 376         case OPT_SERIAL:
 377             serial = ++num;
 378             break;
 379         case OPT_NEXT_SERIAL:
 380             next_serial = ++num;
 381             break;
 382         case OPT_MODULUS:
 383             modulus = ++num;
 384             break;
 385         case OPT_PUBKEY:
 386             pubkey = ++num;
 387             break;
 388         case OPT_X509TOREQ:
 389             x509req = ++num;
 390             break;
 391         case OPT_TEXT:
 392             text = ++num;
 393             break;
 394         case OPT_SUBJECT:
 395             subject = ++num;
 396             break;
 397         case OPT_ISSUER:
 398             issuer = ++num;
 399             break;
 400         case OPT_FINGERPRINT:
 401             fingerprint = ++num;
 402             break;
 403         case OPT_HASH:
 404             subject_hash = ++num;
 405             break;
 406         case OPT_ISSUER_HASH:
 407             issuer_hash = ++num;
 408             break;
 409         case OPT_PURPOSE:
 410             pprint = ++num;
 411             break;
 412         case OPT_STARTDATE:
 413             startdate = ++num;
 414             break;
 415         case OPT_ENDDATE:
 416             enddate = ++num;
 417             break;
 418         case OPT_NOOUT:
 419             noout = ++num;
 420             break;
 421         case OPT_EXT:
 422             ext = ++num;
 423             exts = opt_arg();
 424             break;
 425         case OPT_NOCERT:
 426             nocert = 1;
 427             break;
 428         case OPT_TRUSTOUT:
 429             trustout = 1;
 430             break;
 431         case OPT_CLRTRUST:
 432             clrtrust = ++num;
 433             break;
 434         case OPT_CLRREJECT:
 435             clrreject = ++num;
 436             break;
 437         case OPT_ALIAS:
 438             aliasout = ++num;
 439             break;
 440         case OPT_CACREATESERIAL:
 441             CA_createserial = ++num;
 442             break;
 443         case OPT_CLREXT:
 444             clrext = 1;
 445             break;
 446         case OPT_OCSPID:
 447             ocspid = ++num;
 448             break;
 449         case OPT_BADSIG:
 450             badsig = 1;
 451             break;
 452 #ifndef OPENSSL_NO_MD5
 453         case OPT_SUBJECT_HASH_OLD:
 454             subject_hash_old = ++num;
 455             break;
 456         case OPT_ISSUER_HASH_OLD:
 457             issuer_hash_old = ++num;
 458             break;
 459 #else
 460         case OPT_SUBJECT_HASH_OLD:
 461         case OPT_ISSUER_HASH_OLD:
 462             break;
 463 #endif
 464         case OPT_DATES:
 465             startdate = ++num;
 466             enddate = ++num;
 467             break;
 468         case OPT_CHECKEND:
 469             checkend = 1;
 470             {
 471                 intmax_t temp = 0;
 472                 if (!opt_imax(opt_arg(), &temp))
 473                     goto opthelp;
 474                 checkoffset = (time_t)temp;
 475                 if ((intmax_t)checkoffset != temp) {
 476                     BIO_printf(bio_err, "%s: checkend time out of range %s\n",
 477                                prog, opt_arg());
 478                     goto opthelp;
 479                 }
 480             }
 481             break;
 482         case OPT_CHECKHOST:
 483             checkhost = opt_arg();
 484             break;
 485         case OPT_CHECKEMAIL:
 486             checkemail = opt_arg();
 487             break;
 488         case OPT_CHECKIP:
 489             checkip = opt_arg();
 490             break;
 491         case OPT_PRESERVE_DATES:
 492             if (days != DEF_DAYS)
 493                 goto opthelp;
 494             preserve_dates = 1;
 495             break;
 496         case OPT_MD:
 497             if (!opt_md(opt_unknown(), &digest))
 498                 goto opthelp;
 499         }
 500     }
 501     argc = opt_num_rest();
 502     argv = opt_rest();
 503     if (argc != 0) {
 504         BIO_printf(bio_err, "%s: Unknown parameter %s\n", prog, argv[0]);
 505         goto opthelp;
 506     }
 507
 508     if (!app_passwd(passinarg, NULL, &passin, NULL)) {
 509         BIO_printf(bio_err, "Error getting password\n");
 510         goto end;
 511     }
 512
 513     if (!X509_STORE_set_default_paths(ctx)) {
 514         ERR_print_errors(bio_err);
 515         goto end;
 516     }
 517
 518     if (newcert && infile != NULL) {
 519         BIO_printf(bio_err, "The -in option must not be used since -new is set\n");
 520         goto end;
 521     }
 522     if (newcert && fkeyfile == NULL) {
 523         BIO_printf(bio_err,
 524                    "The -new option requires a public key to be set using -force_pubkey\n");
 525         goto end;
 526     }
 527     if (fkeyfile != NULL) {
 528         fkey = load_pubkey(fkeyfile, keyformat, 0, NULL, e, "Forced key");
 529         if (fkey == NULL)
 530             goto end;
 531     }
 532
 533     if (newcert && subj == NULL) {
 534         BIO_printf(bio_err,
 535                    "The -new option requires a subject to be set using -subj\n");
 536         goto end;
 537     }
 538     if (subj != NULL && (fsubj = parse_name(subj, chtype, multirdn)) == NULL)
 539         goto end;
 540
 541     if (CAkeyfile == NULL && CA_flag && CAformat == FORMAT_PEM) {
 542         CAkeyfile = CAfile;
 543     } else if (CA_flag && CAkeyfile == NULL) {
 544         BIO_printf(bio_err,
 545                    "need to specify a CAkey if using the CA command\n");
 546         goto end;
 547     } else if (!CA_flag && CAkeyfile != NULL) {
 548         BIO_printf(bio_err,
 549                    "ignoring -CAkey option since no -CA option is given\n");
 550     }
 551
 552     if (extfile != NULL) {
 553         X509V3_CTX ctx2;
 554         if ((extconf = app_load_config(extfile)) == NULL)
 555             goto end;
 556         if (extsect == NULL) {
 557             extsect = NCONF_get_string(extconf, "default", "extensions");
 558             if (extsect == NULL) {
 559                 ERR_clear_error();
 560                 extsect = "default";
 561             }
 562         }
 563         X509V3_set_ctx_test(&ctx2);
 564         X509V3_set_nconf(&ctx2, extconf);
 565         if (!X509V3_EXT_add_nconf(extconf, &ctx2, extsect, NULL)) {
 566             BIO_printf(bio_err,
 567                        "Error Loading extension section %s\n", extsect);
 568             ERR_print_errors(bio_err);
 569             goto end;
 570         }
 571     }
 572
 573     if (reqfile) {
 574         EVP_PKEY *pkey;
 575         BIO *in;
 576
 577         in = bio_open_default(infile, 'r', informat);
 578         if (in == NULL)
 579             goto end;
 580         req = PEM_read_bio_X509_REQ(in, NULL, NULL, NULL);
 581         BIO_free(in);
 582
 583         if (req == NULL) {
 584             ERR_print_errors(bio_err);
 585             goto end;
 586         }
 587
 588         if ((pkey = X509_REQ_get0_pubkey(req)) == NULL) {
 589             BIO_printf(bio_err, "error unpacking public key\n");
 590             goto end;
 591         }
 592         i = do_X509_REQ_verify(req, pkey, vfyopts);
 593         if (i < 0) {
 594             BIO_printf(bio_err, "Request self-signature verification error\n");
 595             ERR_print_errors(bio_err);
 596             goto end;
 597         }
 598         if (i == 0) {
 599             BIO_printf(bio_err,
 600                        "Request self-signature did not match the certificate request\n");
 601             goto end;
 602         } else {
 603             BIO_printf(bio_err, "Request self-signature ok\n");
 604         }
 605
 606         print_name(bio_err, "subject=", X509_REQ_get_subject_name(req),
 607                    get_nameopt());
 608     }
 609
 610     if (reqfile || newcert) {
 611         X509_NAME *n;
 612
 613         if (!sign_flag && CAkeyfile == NULL) {
 614             BIO_printf(bio_err,
 615                        "We need a private key to sign with, use -signkey or -CAkey or -CA <file> with private key\n");
 616             goto end;
 617         }
 618         if ((x = X509_new()) == NULL)
 619             goto end;
 620
 621         if (sno == NULL) {
 622             sno = ASN1_INTEGER_new();
 623             if (sno == NULL || !rand_serial(NULL, sno))
 624                 goto end;
 625             if (!X509_set_serialNumber(x, sno))
 626                 goto end;
 627             ASN1_INTEGER_free(sno);
 628             sno = NULL;
 629         } else if (!X509_set_serialNumber(x, sno)) {
 630             goto end;
 631         }
 632
 633         n = req == NULL ? fsubj : X509_REQ_get_subject_name(req);
 634         if (!X509_set_issuer_name(x, n) || !X509_set_subject_name(x, n))
 635             goto end;
 636         if (!set_cert_times(x, NULL, NULL, days))
 637             goto end;
 638
 639         if (!X509_set_pubkey(x, fkey != NULL ? fkey : X509_REQ_get0_pubkey(req)))
 640             goto end;
 641     } else {
 642         x = load_cert(infile, informat, "Certificate");
 643         if (x == NULL)
 644             goto end;
 645         if (fkey != NULL && !X509_set_pubkey(x, fkey))
 646             goto end;
 647         if (fsubj != NULL && !X509_set_subject_name(x, fsubj))
 648             goto end;
 649     }
 650
 651     if (CA_flag) {
 652         xca = load_cert(CAfile, CAformat, "CA Certificate");
 653         if (xca == NULL)
 654             goto end;
 655     }
 656
 657     out = bio_open_default(outfile, 'w', outformat);
 658     if (out == NULL)
 659         goto end;
 660
 661     if (!noout || text || next_serial)
 662         OBJ_create("2.99999.3", "SET.ex3", "SET x509v3 extension 3");
 663
 664     if (alias)
 665         X509_alias_set1(x, (unsigned char *)alias, -1);
 666
 667     if (clrtrust)
 668         X509_trust_clear(x);
 669     if (clrreject)
 670         X509_reject_clear(x);
 671
 672     if (trust != NULL) {
 673         for (i = 0; i < sk_ASN1_OBJECT_num(trust); i++) {
 674             objtmp = sk_ASN1_OBJECT_value(trust, i);
 675             X509_add1_trust_object(x, objtmp);
 676         }
 677         objtmp = NULL;
 678     }
 679
 680     if (reject != NULL) {
 681         for (i = 0; i < sk_ASN1_OBJECT_num(reject); i++) {
 682             objtmp = sk_ASN1_OBJECT_value(reject, i);
 683             X509_add1_reject_object(x, objtmp);
 684         }
 685         objtmp = NULL;
 686     }
 687
 688     if (badsig) {
 689         const ASN1_BIT_STRING *signature;
 690
 691         X509_get0_signature(&signature, NULL, x);
 692         corrupt_signature(signature);
 693     }
 694
 695     if (num) {
 696         for (i = 1; i <= num; i++) {
 697             if (issuer == i) {
 698                 print_name(out, "issuer=", X509_get_issuer_name(x), get_nameopt());
 699             } else if (subject == i) {
 700                 print_name(out, "subject=",
 701                            X509_get_subject_name(x), get_nameopt());
 702             } else if (serial == i) {
 703                 BIO_printf(out, "serial=");
 704                 i2a_ASN1_INTEGER(out, X509_get_serialNumber(x));
 705                 BIO_printf(out, "\n");
 706             } else if (next_serial == i) {
 707                 ASN1_INTEGER *ser = X509_get_serialNumber(x);
 708                 BIGNUM *bnser = ASN1_INTEGER_to_BN(ser, NULL);
 709
 710                 if (!bnser)
 711                     goto end;
 712                 if (!BN_add_word(bnser, 1))
 713                     goto end;
 714                 ser = BN_to_ASN1_INTEGER(bnser, NULL);
 715                 if (!ser)
 716                     goto end;
 717                 BN_free(bnser);
 718                 i2a_ASN1_INTEGER(out, ser);
 719                 ASN1_INTEGER_free(ser);
 720                 BIO_puts(out, "\n");
 721             } else if (email == i || ocsp_uri == i) {
 722                 int j;
 723                 STACK_OF(OPENSSL_STRING) *emlst;
 724                 if (email == i)
 725                     emlst = X509_get1_email(x);
 726                 else
 727                     emlst = X509_get1_ocsp(x);
 728                 for (j = 0; j < sk_OPENSSL_STRING_num(emlst); j++)
 729                     BIO_printf(out, "%s\n",
 730                                sk_OPENSSL_STRING_value(emlst, j));
 731                 X509_email_free(emlst);
 732             } else if (aliasout == i) {
 733                 unsigned char *alstr;
 734                 alstr = X509_alias_get0(x, NULL);
 735                 if (alstr)
 736                     BIO_printf(out, "%s\n", alstr);
 737                 else
 738                     BIO_puts(out, "<No Alias>\n");
 739             } else if (subject_hash == i) {
 740                 BIO_printf(out, "%08lx\n", X509_subject_name_hash(x));
 741             }
 742 #ifndef OPENSSL_NO_MD5
 743             else if (subject_hash_old == i) {
 744                 BIO_printf(out, "%08lx\n", X509_subject_name_hash_old(x));
 745             }
 746 #endif
 747             else if (issuer_hash == i) {
 748                 BIO_printf(out, "%08lx\n", X509_issuer_name_hash(x));
 749             }
 750 #ifndef OPENSSL_NO_MD5
 751             else if (issuer_hash_old == i) {
 752                 BIO_printf(out, "%08lx\n", X509_issuer_name_hash_old(x));
 753             }
 754 #endif
 755             else if (pprint == i) {
 756                 X509_PURPOSE *ptmp;
 757                 int j;
 758                 BIO_printf(out, "Certificate purposes:\n");
 759                 for (j = 0; j < X509_PURPOSE_get_count(); j++) {
 760                     ptmp = X509_PURPOSE_get0(j);
 761                     purpose_print(out, x, ptmp);
 762                 }
 763             } else if (modulus == i) {
 764                 EVP_PKEY *pkey;
 765
 766                 pkey = X509_get0_pubkey(x);
 767                 if (pkey == NULL) {
 768                     BIO_printf(bio_err, "Modulus=unavailable\n");
 769                     ERR_print_errors(bio_err);
 770                     goto end;
 771                 }
 772                 BIO_printf(out, "Modulus=");
 773 #ifndef OPENSSL_NO_RSA
 774                 if (EVP_PKEY_id(pkey) == EVP_PKEY_RSA) {
 775                     const BIGNUM *n;
 776                     RSA_get0_key(EVP_PKEY_get0_RSA(pkey), &n, NULL, NULL);
 777                     BN_print(out, n);
 778                 } else
 779 #endif
 780 #ifndef OPENSSL_NO_DSA
 781                 if (EVP_PKEY_id(pkey) == EVP_PKEY_DSA) {
 782                     const BIGNUM *dsapub = NULL;
 783                     DSA_get0_key(EVP_PKEY_get0_DSA(pkey), &dsapub, NULL);
 784                     BN_print(out, dsapub);
 785                 } else
 786 #endif
 787                 {
 788                     BIO_printf(out, "Wrong Algorithm type");
 789                 }
 790                 BIO_printf(out, "\n");
 791             } else if (pubkey == i) {
 792                 EVP_PKEY *pkey;
 793
 794                 pkey = X509_get0_pubkey(x);
 795                 if (pkey == NULL) {
 796                     BIO_printf(bio_err, "Error getting public key\n");
 797                     ERR_print_errors(bio_err);
 798                     goto end;
 799                 }
 800                 PEM_write_bio_PUBKEY(out, pkey);
 801             } else if (C == i) {
 802                 unsigned char *d;
 803                 char *m;
 804                 int len;
 805
 806                 print_name(out, "/*\n"
 807                                 " * Subject: ", X509_get_subject_name(x), get_nameopt());
 808                 print_name(out, " * Issuer:  ", X509_get_issuer_name(x), get_nameopt());
 809                 BIO_puts(out, " */\n");
 810
 811                 len = i2d_X509(x, NULL);
 812                 m = app_malloc(len, "x509 name buffer");
 813                 d = (unsigned char *)m;
 814                 len = i2d_X509_NAME(X509_get_subject_name(x), &d);
 815                 print_array(out, "the_subject_name", len, (unsigned char *)m);
 816                 d = (unsigned char *)m;
 817                 len = i2d_X509_PUBKEY(X509_get_X509_PUBKEY(x), &d);
 818                 print_array(out, "the_public_key", len, (unsigned char *)m);
 819                 d = (unsigned char *)m;
 820                 len = i2d_X509(x, &d);
 821                 print_array(out, "the_certificate", len, (unsigned char *)m);
 822                 OPENSSL_free(m);
 823             } else if (text == i) {
 824                 X509_print_ex(out, x, get_nameopt(), certflag);
 825             } else if (startdate == i) {
 826                 BIO_puts(out, "notBefore=");
 827                 ASN1_TIME_print(out, X509_get0_notBefore(x));
 828                 BIO_puts(out, "\n");
 829             } else if (enddate == i) {
 830                 BIO_puts(out, "notAfter=");
 831                 ASN1_TIME_print(out, X509_get0_notAfter(x));
 832                 BIO_puts(out, "\n");
 833             } else if (fingerprint == i) {
 834                 int j;
 835                 unsigned int n;
 836                 unsigned char md[EVP_MAX_MD_SIZE];
 837                 const EVP_MD *fdig = digest;
 838
 839                 if (fdig == NULL)
 840                     fdig = EVP_sha1();
 841
 842                 if (!X509_digest(x, fdig, md, &n)) {
 843                     BIO_printf(bio_err, "out of memory\n");
 844                     goto end;
 845                 }
 846                 BIO_printf(out, "%s Fingerprint=",
 847                            OBJ_nid2sn(EVP_MD_type(fdig)));
 848                 for (j = 0; j < (int)n; j++) {
 849                     BIO_printf(out, "%02X%c", md[j], (j + 1 == (int)n)
 850                                ? '\n' : ':');
 851                 }
 852             }
 853
 854             /* should be in the library */
 855             else if (sign_flag == i && x509req == 0) {
 856                 BIO_printf(bio_err, "Getting Private key\n");
 857                 if (Upkey == NULL) {
 858                     Upkey = load_key(keyfile, keyformat, 0,
 859                                      passin, e, "Private key");
 860                     if (Upkey == NULL)
 861                         goto end;
 862                 }
 863
 864                 if (!sign(x, Upkey, fkey, sigopts, days, clrext, digest,
 865                           extconf, extsect, preserve_dates))
 866                     goto end;
 867             } else if (CA_flag == i) {
 868                 BIO_printf(bio_err, "Getting CA Private Key\n");
 869                 if (CAkeyfile != NULL) {
 870                     CApkey = load_key(CAkeyfile, CAkeyformat,
 871                                       0, passin, e, "CA Private Key");
 872                     if (CApkey == NULL)
 873                         goto end;
 874                 }
 875
 876                 if (!x509_certify(ctx, CAfile, digest, x, xca,
 877                                   CApkey, sigopts,
 878                                   CAserial, CA_createserial, days, clrext,
 879                                   extconf, extsect, sno, reqfile, preserve_dates))
 880                     goto end;
 881             } else if (x509req == i) {
 882                 EVP_PKEY *pk;
 883
 884                 BIO_printf(bio_err, "Getting request Private Key\n");
 885                 if (keyfile == NULL) {
 886                     BIO_printf(bio_err, "no request key file specified\n");
 887                     goto end;
 888                 } else {
 889                     pk = load_key(keyfile, keyformat, 0,
 890                                   passin, e, "request key");
 891                     if (pk == NULL)
 892                         goto end;
 893                 }
 894
 895                 BIO_printf(bio_err, "Generating certificate request\n");
 896
 897                 rq = X509_to_X509_REQ(x, pk, digest);
 898                 EVP_PKEY_free(pk);
 899                 if (rq == NULL) {
 900                     ERR_print_errors(bio_err);
 901                     goto end;
 902                 }
 903                 if (!noout) {
 904                     X509_REQ_print_ex(out, rq, get_nameopt(), X509_FLAG_COMPAT);
 905                     PEM_write_bio_X509_REQ(out, rq);
 906                 }
 907                 noout = 1;
 908             } else if (ocspid == i) {
 909                 X509_ocspid_print(out, x);
 910             } else if (ext == i) {
 911                 print_x509v3_exts(out, x, exts);
 912             }
 913         }
 914     }
 915
 916     if (checkend) {
 917         time_t tcheck = time(NULL) + checkoffset;
 918
 919         if (X509_cmp_time(X509_get0_notAfter(x), &tcheck) < 0) {
 920             BIO_printf(out, "Certificate will expire\n");
 921             ret = 1;
 922         } else {
 923             BIO_printf(out, "Certificate will not expire\n");
 924             ret = 0;
 925         }
 926         goto end;
 927     }
 928
 929     print_cert_checks(out, x, checkhost, checkemail, checkip);
 930
 931     if (noout || nocert) {
 932         ret = 0;
 933         goto end;
 934     }
 935
 936     if (outformat == FORMAT_ASN1) {
 937         i = i2d_X509_bio(out, x);
 938     } else if (outformat == FORMAT_PEM) {
 939         if (trustout)
 940             i = PEM_write_bio_X509_AUX(out, x);
 941         else
 942             i = PEM_write_bio_X509(out, x);
 943     } else {
 944         BIO_printf(bio_err, "bad output format specified for outfile\n");
 945         goto end;
 946     }
 947     if (!i) {
 948         BIO_printf(bio_err, "unable to write certificate\n");
 949         ERR_print_errors(bio_err);
 950         goto end;
 951     }
 952     ret = 0;
 953  end:
 954     NCONF_free(extconf);
 955     BIO_free_all(out);
 956     X509_STORE_free(ctx);
 957     X509_NAME_free(fsubj);
 958     X509_REQ_free(req);
 959     X509_free(x);
 960     X509_free(xca);
 961     EVP_PKEY_free(Upkey);
 962     EVP_PKEY_free(CApkey);
 963     EVP_PKEY_free(fkey);
 964     sk_OPENSSL_STRING_free(sigopts);
 965     sk_OPENSSL_STRING_free(vfyopts);
 966     X509_REQ_free(rq);
 967     ASN1_INTEGER_free(sno);
 968     sk_ASN1_OBJECT_pop_free(trust, ASN1_OBJECT_free);
 969     sk_ASN1_OBJECT_pop_free(reject, ASN1_OBJECT_free);
 970     ASN1_OBJECT_free(objtmp);
 971     release_engine(e);
 972     OPENSSL_free(passin);
 973     return ret;
 974 }
 975
 976 static ASN1_INTEGER *x509_load_serial(const char *CAfile,
 977                                       const char *serialfile, int create)
 978 {
 979     char *buf = NULL;
 980     ASN1_INTEGER *bs = NULL;
 981     BIGNUM *serial = NULL;
 982
 983     if (serialfile == NULL) {
 984         const char *p = strrchr(CAfile, '.');
 985         size_t len = p != NULL ? (size_t)(p - CAfile) : strlen(CAfile);
 986
 987         buf = app_malloc(len + sizeof(POSTFIX), "serial# buffer");
 988         memcpy(buf, CAfile, len);
 989         memcpy(buf + len, POSTFIX, sizeof(POSTFIX));
 990         serialfile = buf;
 991     }
 992
 993     serial = load_serial(serialfile, create, NULL);
 994     if (serial == NULL)
 995         goto end;
 996
 997     if (!BN_add_word(serial, 1)) {
 998         BIO_printf(bio_err, "add_word failure\n");
 999         goto end;
1000     }
1001
1002     if (!save_serial(serialfile, NULL, serial, &bs))
1003         goto end;
1004
1005  end:
1006     OPENSSL_free(buf);
1007     BN_free(serial);
1008     return bs;
1009 }
1010
1011 static int x509_certify(X509_STORE *ctx, const char *CAfile, const EVP_MD *digest,
1012                         X509 *x, X509 *xca, EVP_PKEY *pkey,
1013                         STACK_OF(OPENSSL_STRING) *sigopts,
1014                         const char *serialfile, int create,
1015                         int days, int clrext, CONF *conf, const char *section,
1016                         ASN1_INTEGER *sno, int reqfile, int preserve_dates)
1017 {
1018     int ret = 0;
1019     ASN1_INTEGER *bs = NULL;
1020     X509_STORE_CTX *xsc = NULL;
1021     EVP_PKEY *upkey;
1022
1023     upkey = X509_get0_pubkey(xca);
1024     if (upkey == NULL) {
1025         BIO_printf(bio_err, "Error obtaining CA X509 public key\n");
1026         goto end;
1027     }
1028     EVP_PKEY_copy_parameters(upkey, pkey);
1029
1030     xsc = X509_STORE_CTX_new();
1031     if (xsc == NULL || !X509_STORE_CTX_init(xsc, ctx, x, NULL)) {
1032         BIO_printf(bio_err, "Error initialising X509 store\n");
1033         goto end;
1034     }
1035     if (sno)
1036         bs = sno;
1037     else if ((bs = x509_load_serial(CAfile, serialfile, create)) == NULL)
1038         goto end;
1039
1040     /*
1041      * NOTE: this certificate can/should be self signed, unless it was a
1042      * certificate request in which case it is not.
1043      */
1044     X509_STORE_CTX_set_cert(xsc, x);
1045     X509_STORE_CTX_set_flags(xsc, X509_V_FLAG_CHECK_SS_SIGNATURE);
1046     if (!reqfile && X509_verify_cert(xsc) <= 0)
1047         goto end;
1048
1049     if (!X509_check_private_key(xca, pkey)) {
1050         BIO_printf(bio_err,
1051                    "CA certificate and CA private key do not match\n");
1052         goto end;
1053     }
1054
1055     if (!X509_set_issuer_name(x, X509_get_subject_name(xca)))
1056         goto end;
1057     if (!X509_set_serialNumber(x, bs))
1058         goto end;
1059
1060     if (!preserve_dates && !set_cert_times(x, NULL, NULL, days))
1061         goto end;
1062
1063     if (clrext) {
1064         while (X509_get_ext_count(x) > 0)
1065             X509_delete_ext(x, 0);
1066     }
1067
1068     if (conf != NULL) {
1069         X509V3_CTX ctx2;
1070         X509_set_version(x, 2); /* version 3 certificate */
1071         X509V3_set_ctx(&ctx2, xca, x, NULL, NULL, 0);
1072         X509V3_set_nconf(&ctx2, conf);
1073         if (!X509V3_EXT_add_nconf(conf, &ctx2, section, x))
1074             goto end;
1075     }
1076
1077     if (!do_X509_sign(x, pkey, digest, sigopts))
1078         goto end;
1079     ret = 1;
1080  end:
1081     X509_STORE_CTX_free(xsc);
1082     if (!ret)
1083         ERR_print_errors(bio_err);
1084     if (!sno)
1085         ASN1_INTEGER_free(bs);
1086     return ret;
1087 }
1088
1089 static int callb(int ok, X509_STORE_CTX *ctx)
1090 {
1091     int err;
1092     X509 *err_cert;
1093
1094     /*
1095      * it is ok to use a self signed certificate This case will catch both
1096      * the initial ok == 0 and the final ok == 1 calls to this function
1097      */
1098     err = X509_STORE_CTX_get_error(ctx);
1099     if (err == X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT)
1100         return 1;
1101
1102     /*
1103      * BAD we should have gotten an error.  Normally if everything worked
1104      * X509_STORE_CTX_get_error(ctx) will still be set to
1105      * DEPTH_ZERO_SELF_....
1106      */
1107     if (ok) {
1108         BIO_printf(bio_err,
1109                    "error with certificate to be certified - should be self signed\n");
1110         return 0;
1111     } else {
1112         err_cert = X509_STORE_CTX_get_current_cert(ctx);
1113         print_name(bio_err, NULL, X509_get_subject_name(err_cert), 0);
1114         BIO_printf(bio_err,
1115                    "error with certificate - error %d at depth %d\n%s\n", err,
1116                    X509_STORE_CTX_get_error_depth(ctx),
1117                    X509_verify_cert_error_string(err));
1118         return 1;
1119     }
1120 }
1121
1122 /* self-issue; self-sign unless a forced public key (fkey) is given */
1123 static int sign(X509 *x, EVP_PKEY *pkey, EVP_PKEY *fkey,
1124                 STACK_OF(OPENSSL_STRING) *sigopts,
1125                 int days, int clrext,
1126                 const EVP_MD *digest, CONF *conf, const char *section,
1127                 int preserve_dates)
1128 {
1129     if (!X509_set_issuer_name(x, X509_get_subject_name(x)))
1130         goto err;
1131     if (!preserve_dates && !set_cert_times(x, NULL, NULL, days))
1132         goto err;
1133     if (fkey == NULL && !X509_set_pubkey(x, pkey))
1134         goto err;
1135     if (clrext) {
1136         while (X509_get_ext_count(x) > 0)
1137             X509_delete_ext(x, 0);
1138     }
1139     if (conf != NULL) {
1140         X509V3_CTX ctx;
1141         X509_set_version(x, 2); /* version 3 certificate */
1142         X509V3_set_ctx(&ctx, x, x, NULL, NULL, 0);
1143         X509V3_set_nconf(&ctx, conf);
1144         if (!X509V3_EXT_add_nconf(conf, &ctx, section, x))
1145             goto err;
1146     }
1147     if (!do_X509_sign(x, pkey, digest, sigopts))
1148         goto err;
1149     return 1;
1150  err:
1151     ERR_print_errors(bio_err);
1152     return 0;
1153 }
1154
1155 static int purpose_print(BIO *bio, X509 *cert, X509_PURPOSE *pt)
1156 {
1157     int id, i, idret;
1158     const char *pname;
1159     id = X509_PURPOSE_get_id(pt);
1160     pname = X509_PURPOSE_get0_name(pt);
1161     for (i = 0; i < 2; i++) {
1162         idret = X509_check_purpose(cert, id, i);
1163         BIO_printf(bio, "%s%s : ", pname, i ? " CA" : "");
1164         if (idret == 1)
1165             BIO_printf(bio, "Yes\n");
1166         else if (idret == 0)
1167             BIO_printf(bio, "No\n");
1168         else
1169             BIO_printf(bio, "Yes (WARNING code=%d)\n", idret);
1170     }
1171     return 1;
1172 }
1173
1174 static int parse_ext_names(char *names, const char **result)
1175 {
1176     char *p, *q;
1177     int cnt = 0, len = 0;
1178
1179     p = q = names;
1180     len = strlen(names);
1181
1182     while (q - names <= len) {
1183         if (*q != ',' && *q != '\0') {
1184             q++;
1185             continue;
1186         }
1187         if (p != q) {
1188             /* found */
1189             if (result != NULL) {
1190                 result[cnt] = p;
1191                 *q = '\0';
1192             }
1193             cnt++;
1194         }
1195         p = ++q;
1196     }
1197
1198     return cnt;
1199 }
1200
1201 static int print_x509v3_exts(BIO *bio, X509 *x, const char *ext_names)
1202 {
1203     const STACK_OF(X509_EXTENSION) *exts = NULL;
1204     STACK_OF(X509_EXTENSION) *exts2 = NULL;
1205     X509_EXTENSION *ext = NULL;
1206     ASN1_OBJECT *obj;
1207     int i, j, ret = 0, num, nn = 0;
1208     const char *sn, **names = NULL;
1209     char *tmp_ext_names = NULL;
1210
1211     exts = X509_get0_extensions(x);
1212     if ((num = sk_X509_EXTENSION_num(exts)) <= 0) {
1213         BIO_printf(bio, "No extensions in certificate\n");
1214         ret = 1;
1215         goto end;
1216     }
1217
1218     /* parse comma separated ext name string */
1219     if ((tmp_ext_names = OPENSSL_strdup(ext_names)) == NULL)
1220         goto end;
1221     if ((nn = parse_ext_names(tmp_ext_names, NULL)) == 0) {
1222         BIO_printf(bio, "Invalid extension names: %s\n", ext_names);
1223         goto end;
1224     }
1225     if ((names = OPENSSL_malloc(sizeof(char *) * nn)) == NULL)
1226         goto end;
1227     parse_ext_names(tmp_ext_names, names);
1228
1229     for (i = 0; i < num; i++) {
1230         ext = sk_X509_EXTENSION_value(exts, i);
1231
1232         /* check if this ext is what we want */
1233         obj = X509_EXTENSION_get_object(ext);
1234         sn = OBJ_nid2sn(OBJ_obj2nid(obj));
1235         if (sn == NULL || strcmp(sn, "UNDEF") == 0)
1236             continue;
1237
1238         for (j = 0; j < nn; j++) {
1239             if (strcmp(sn, names[j]) == 0) {
1240                 /* push the extension into a new stack */
1241                 if (exts2 == NULL
1242                     && (exts2 = sk_X509_EXTENSION_new_null()) == NULL)
1243                     goto end;
1244                 if (!sk_X509_EXTENSION_push(exts2, ext))
1245                     goto end;
1246             }
1247         }
1248     }
1249
1250     if (!sk_X509_EXTENSION_num(exts2)) {
1251         BIO_printf(bio, "No extensions matched with %s\n", ext_names);
1252         ret = 1;
1253         goto end;
1254     }
1255
1256     ret = X509V3_extensions_print(bio, NULL, exts2, 0, 0);
1257  end:
1258     sk_X509_EXTENSION_free(exts2);
1259     OPENSSL_free(names);
1260     OPENSSL_free(tmp_ext_names);
1261     return ret;
1262 }