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_STRING()
  33
  34 #undef POSTFIX
  35 #define POSTFIX ".srl"
  36 #define DEF_DAYS        30
  37
  38 static int callb(int ok, X509_STORE_CTX *ctx);
  39 static int sign(X509 *x, EVP_PKEY *pkey, EVP_PKEY *fkey,
  40                 STACK_OF(OPENSSL_STRING) *sigopts,
  41                 int days, int clrext,
  42                 const EVP_MD *digest, CONF *conf, const char *section,
  43                 int preserve_dates);
  44 static int x509_certify(X509_STORE *ctx, const char *CAfile, const EVP_MD *digest,
  45                         X509 *x, X509 *xca, EVP_PKEY *pkey,
  46                         STACK_OF(OPENSSL_STRING) *sigopts, const char *serialfile,
  47                         int create, int days, int clrext, CONF *conf,
  48                         const char *section, ASN1_INTEGER *sno, int reqfile,
  49                         int preserve_dates);
  50 static int purpose_print(BIO *bio, X509 *cert, X509_PURPOSE *pt);
  51 static int print_x509v3_exts(BIO *bio, X509 *x, const char *exts);
  52
  53 typedef enum OPTION_choice {
  54     OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
  55     OPT_INFORM, OPT_OUTFORM, OPT_KEYFORM, OPT_REQ, OPT_CAFORM,
  56     OPT_CAKEYFORM, OPT_VFYOPT, OPT_SIGOPT, OPT_DAYS, OPT_PASSIN, OPT_EXTFILE,
  57     OPT_EXTENSIONS, OPT_IN, OPT_OUT, OPT_SIGNKEY, OPT_CA, OPT_CAKEY,
  58     OPT_CASERIAL, OPT_SET_SERIAL, OPT_NEW, OPT_FORCE_PUBKEY, OPT_SUBJ,
  59     OPT_ADDTRUST, OPT_ADDREJECT, OPT_SETALIAS, OPT_CERTOPT, OPT_NAMEOPT,
  60     OPT_C, OPT_EMAIL, OPT_OCSP_URI, OPT_SERIAL, OPT_NEXT_SERIAL,
  61     OPT_MODULUS, OPT_PUBKEY, OPT_X509TOREQ, OPT_TEXT, OPT_HASH,
  62     OPT_ISSUER_HASH, OPT_SUBJECT, OPT_ISSUER, OPT_FINGERPRINT, OPT_DATES,
  63     OPT_PURPOSE, OPT_STARTDATE, OPT_ENDDATE, OPT_CHECKEND, OPT_CHECKHOST,
  64     OPT_CHECKEMAIL, OPT_CHECKIP, OPT_NOOUT, OPT_TRUSTOUT, OPT_CLRTRUST,
  65     OPT_CLRREJECT, OPT_ALIAS, OPT_CACREATESERIAL, OPT_CLREXT, OPT_OCSPID,
  66     OPT_SUBJECT_HASH_OLD,
  67     OPT_ISSUER_HASH_OLD,
  68     OPT_BADSIG, OPT_MD, OPT_ENGINE, OPT_NOCERT, OPT_PRESERVE_DATES,
  69     OPT_R_ENUM, OPT_PROV_ENUM, OPT_EXT
  70 } OPTION_CHOICE;
  71
  72 const OPTIONS x509_options[] = {
  73     OPT_SECTION("General"),
  74     {"help", OPT_HELP, '-', "Display this summary"},
  75 #ifndef OPENSSL_NO_ENGINE
  76     {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
  77 #endif
  78
  79     {"inform", OPT_INFORM, 'f',
  80      "CSR input format (DER or PEM) - default PEM"},
  81     {"in", OPT_IN, '<', "Input file - default stdin"},
  82     {"passin", OPT_PASSIN, 's', "Private key and cert file pass-phrase source"},
  83     {"outform", OPT_OUTFORM, 'f',
  84      "Output format (DER or PEM) - default PEM"},
  85     {"out", OPT_OUT, '>', "Output file - default stdout"},
  86     {"keyform", OPT_KEYFORM, 'E', "Private key format (ENGINE, other values ignored)"},
  87     {"req", OPT_REQ, '-', "Input is a certificate request, sign and output"},
  88     {"vfyopt", OPT_VFYOPT, 's', "Verification parameter in n:v form"},
  89
  90     OPT_SECTION("Output"),
  91     {"serial", OPT_SERIAL, '-', "Print serial number value"},
  92     {"subject_hash", OPT_HASH, '-', "Print subject hash value"},
  93     {"issuer_hash", OPT_ISSUER_HASH, '-', "Print issuer hash value"},
  94     {"hash", OPT_HASH, '-', "Synonym for -subject_hash"},
  95     {"subject", OPT_SUBJECT, '-', "Print subject DN"},
  96     {"issuer", OPT_ISSUER, '-', "Print issuer DN"},
  97     {"email", OPT_EMAIL, '-', "Print email address(es)"},
  98     {"purpose", OPT_PURPOSE, '-', "Print out certificate purposes"},
  99     {"modulus", OPT_MODULUS, '-', "Print the RSA key modulus"},
 100     {"pubkey", OPT_PUBKEY, '-', "Output the public key"},
 101     {"fingerprint", OPT_FINGERPRINT, '-', "Print the certificate fingerprint"},
 102     {"alias", OPT_ALIAS, '-', "Output certificate alias"},
 103     {"noout", OPT_NOOUT, '-', "No output, just status"},
 104     {"ocspid", OPT_OCSPID, '-',
 105      "Print OCSP hash values for the subject name and public key"},
 106     {"ocsp_uri", OPT_OCSP_URI, '-', "Print OCSP Responder URL(s)"},
 107     {"nocert", OPT_NOCERT, '-', "No certificate output"},
 108     {"trustout", OPT_TRUSTOUT, '-', "Output a trusted certificate"},
 109     {"x509toreq", OPT_X509TOREQ, '-',
 110      "Output a certification request object"},
 111     {"checkend", OPT_CHECKEND, 'M',
 112      "Check whether the cert expires in the next arg seconds"},
 113     {OPT_MORE_STR, 1, 1, "Exit 1 if so, 0 if not"},
 114     {"text", OPT_TEXT, '-', "Print the certificate in text form"},
 115     {"ext", OPT_EXT, 's', "Print various X509V3 extensions"},
 116     {"C", OPT_C, '-', "Print out C code forms"},
 117 #ifndef OPENSSL_NO_MD5
 118     {"subject_hash_old", OPT_SUBJECT_HASH_OLD, '-',
 119      "Print old-style (MD5) subject hash value"},
 120     {"issuer_hash_old", OPT_ISSUER_HASH_OLD, '-',
 121      "Print old-style (MD5) issuer hash value"},
 122 #endif
 123     {"nameopt", OPT_NAMEOPT, 's', "Certificate subject/issuer name printing options"},
 124
 125     OPT_SECTION("Certificate"),
 126     {"startdate", OPT_STARTDATE, '-', "Set notBefore field"},
 127     {"enddate", OPT_ENDDATE, '-', "Set notAfter field"},
 128     {"dates", OPT_DATES, '-', "Both Before and After dates"},
 129     {"clrtrust", OPT_CLRTRUST, '-', "Clear all trusted purposes"},
 130     {"clrext", OPT_CLREXT, '-', "Clear all certificate extensions"},
 131     {"addtrust", OPT_ADDTRUST, 's', "Trust certificate for a given purpose"},
 132     {"addreject", OPT_ADDREJECT, 's',
 133      "Reject certificate for a given purpose"},
 134     {"setalias", OPT_SETALIAS, 's', "Set certificate alias"},
 135     {"days", OPT_DAYS, 'n',
 136      "How long till expiry of a signed certificate - def 30 days"},
 137     {"signkey", OPT_SIGNKEY, 's', "Self-sign cert with arg"},
 138     {"set_serial", OPT_SET_SERIAL, 's', "Serial number to use"},
 139     {"extensions", OPT_EXTENSIONS, 's', "Section from config file to use"},
 140     {"certopt", OPT_CERTOPT, 's', "Various certificate text options"},
 141     {"checkhost", OPT_CHECKHOST, 's', "Check certificate matches host"},
 142     {"checkemail", OPT_CHECKEMAIL, 's', "Check certificate matches email"},
 143     {"checkip", OPT_CHECKIP, 's', "Check certificate matches ipaddr"},
 144     {"force_pubkey", OPT_FORCE_PUBKEY, '<', "Force the key to put inside certificate"},
 145     {"subj", OPT_SUBJ, 's', "Set or override certificate subject (and issuer)"},
 146
 147     OPT_SECTION("CA"),
 148     {"CA", OPT_CA, '<', "Set the CA certificate, must be PEM format"},
 149     {"CAkey", OPT_CAKEY, 's',
 150      "The CA key, must be PEM format; if not in CAfile"},
 151     {"extfile", OPT_EXTFILE, '<', "File with X509V3 extensions to add"},
 152     OPT_R_OPTIONS,
 153     OPT_PROV_OPTIONS,
 154     {"CAform", OPT_CAFORM, 'F', "CA cert format (PEM/DER/P12); has no effect"},
 155     {"CAkeyform", OPT_CAKEYFORM, 'E', "CA key format (ENGINE, other values ignored)"},
 156     {"sigopt", OPT_SIGOPT, 's', "Signature parameter in n:v form"},
 157     {"CAcreateserial", OPT_CACREATESERIAL, '-',
 158      "Create serial number file if it does not exist"},
 159     {"CAserial", OPT_CASERIAL, 's', "Serial file"},
 160     {"new", OPT_NEW, '-', "Generate a certificate from scratch"},
 161     {"next_serial", OPT_NEXT_SERIAL, '-', "Increment current certificate serial number"},
 162     {"clrreject", OPT_CLRREJECT, '-',
 163      "Clears all the prohibited or rejected uses of the certificate"},
 164     {"badsig", OPT_BADSIG, '-', "Corrupt last byte of certificate signature (for test)"},
 165     {"", OPT_MD, '-', "Any supported digest"},
 166     {"preserve_dates", OPT_PRESERVE_DATES, '-', "preserve existing dates when signing"},
 167     {NULL}
 168 };
 169
 170 int x509_main(int argc, char **argv)
 171 {
 172     ASN1_INTEGER *sno = NULL;
 173     ASN1_OBJECT *objtmp = NULL;
 174     BIO *out = NULL;
 175     CONF *extconf = NULL;
 176     EVP_PKEY *Upkey = NULL, *CApkey = NULL, *fkey = NULL;
 177     int newcert = 0;
 178     char *subj = NULL;
 179     X509_NAME *fsubj = NULL;
 180     const unsigned long chtype = MBSTRING_ASC;
 181     const int multirdn = 1;
 182     STACK_OF(ASN1_OBJECT) *trust = NULL, *reject = NULL;
 183     STACK_OF(OPENSSL_STRING) *sigopts = NULL, *vfyopts = NULL;
 184     X509 *x = NULL, *xca = NULL;
 185     X509_REQ *req = NULL, *rq = NULL;
 186     X509_STORE *ctx = NULL;
 187     const EVP_MD *digest = NULL;
 188     char *CAkeyfile = NULL, *CAserial = NULL, *fkeyfile = NULL, *alias = NULL;
 189     char *checkhost = NULL, *checkemail = NULL, *checkip = NULL, *exts = NULL;
 190     char *extsect = NULL, *extfile = NULL, *passin = NULL, *passinarg = NULL;
 191     char *infile = NULL, *outfile = NULL, *keyfile = NULL, *CAfile = NULL;
 192     char *prog;
 193     int x509req = 0, days = DEF_DAYS, modulus = 0, pubkey = 0, pprint = 0;
 194     int C = 0, CAformat = FORMAT_PEM, CAkeyformat = FORMAT_PEM;
 195     int fingerprint = 0, reqfile = 0, checkend = 0;
 196     int informat = FORMAT_PEM, outformat = FORMAT_PEM, keyformat = FORMAT_PEM;
 197     int next_serial = 0, subject_hash = 0, issuer_hash = 0, ocspid = 0;
 198     int noout = 0, sign_flag = 0, CA_flag = 0, CA_createserial = 0, email = 0;
 199     int ocsp_uri = 0, trustout = 0, clrtrust = 0, clrreject = 0, aliasout = 0;
 200     int ret = 1, i, num = 0, badsig = 0, clrext = 0, nocert = 0;
 201     int text = 0, serial = 0, subject = 0, issuer = 0, startdate = 0, ext = 0;
 202     int enddate = 0;
 203     time_t checkoffset = 0;
 204     unsigned long certflag = 0;
 205     int preserve_dates = 0;
 206     OPTION_CHOICE o;
 207     ENGINE *e = NULL;
 208 #ifndef OPENSSL_NO_MD5
 209     int subject_hash_old = 0, issuer_hash_old = 0;
 210 #endif
 211
 212     ctx = X509_STORE_new();
 213     if (ctx == NULL)
 214         goto end;
 215     X509_STORE_set_verify_cb(ctx, callb);
 216
 217     prog = opt_init(argc, argv, x509_options);
 218     while ((o = opt_next()) != OPT_EOF) {
 219         switch (o) {
 220         case OPT_EOF:
 221         case OPT_ERR:
 222  opthelp:
 223             BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
 224             goto end;
 225         case OPT_HELP:
 226             opt_help(x509_options);
 227             ret = 0;
 228             goto end;
 229         case OPT_INFORM:
 230             if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &informat))
 231                 goto opthelp;
 232             break;
 233         case OPT_IN:
 234             infile = opt_arg();
 235             break;
 236         case OPT_OUTFORM:
 237             if (!opt_format(opt_arg(), OPT_FMT_ANY, &outformat))
 238                 goto opthelp;
 239             break;
 240         case OPT_KEYFORM:
 241             if (!opt_format(opt_arg(), OPT_FMT_ANY, &keyformat))
 242                 goto opthelp;
 243             break;
 244         case OPT_CAFORM:
 245             if (!opt_format(opt_arg(), OPT_FMT_ANY, &CAformat))
 246                 goto opthelp;
 247             break;
 248         case OPT_CAKEYFORM:
 249             if (!opt_format(opt_arg(), OPT_FMT_ANY, &CAkeyformat))
 250                 goto opthelp;
 251             break;
 252         case OPT_OUT:
 253             outfile = opt_arg();
 254             break;
 255         case OPT_REQ:
 256             reqfile = 1;
 257             break;
 258
 259         case OPT_SIGOPT:
 260             if (!sigopts)
 261                 sigopts = sk_OPENSSL_STRING_new_null();
 262             if (!sigopts || !sk_OPENSSL_STRING_push(sigopts, opt_arg()))
 263                 goto opthelp;
 264             break;
 265         case OPT_VFYOPT:
 266             if (!vfyopts)
 267                 vfyopts = sk_OPENSSL_STRING_new_null();
 268             if (!vfyopts || !sk_OPENSSL_STRING_push(vfyopts, opt_arg()))
 269                 goto opthelp;
 270             break;
 271         case OPT_DAYS:
 272             if (preserve_dates)
 273                 goto opthelp;
 274             days = atoi(opt_arg());
 275             break;
 276         case OPT_PASSIN:
 277             passinarg = opt_arg();
 278             break;
 279         case OPT_EXTFILE:
 280             extfile = opt_arg();
 281             break;
 282         case OPT_R_CASES:
 283             if (!opt_rand(o))
 284                 goto end;
 285             break;
 286         case OPT_PROV_CASES:
 287             if (!opt_provider(o))
 288                 goto end;
 289             break;
 290         case OPT_EXTENSIONS:
 291             extsect = opt_arg();
 292             break;
 293         case OPT_SIGNKEY:
 294             keyfile = opt_arg();
 295             sign_flag = ++num;
 296             break;
 297         case OPT_CA:
 298             CAfile = opt_arg();
 299             CA_flag = ++num;
 300             break;
 301         case OPT_CAKEY:
 302             CAkeyfile = opt_arg();
 303             break;
 304         case OPT_CASERIAL:
 305             CAserial = opt_arg();
 306             break;
 307         case OPT_SET_SERIAL:
 308             if (sno != NULL) {
 309                 BIO_printf(bio_err, "Serial number supplied twice\n");
 310                 goto opthelp;
 311             }
 312             if ((sno = s2i_ASN1_INTEGER(NULL, opt_arg())) == NULL)
 313                 goto opthelp;
 314             break;
 315         case OPT_NEW:
 316             newcert = 1;
 317             break;
 318         case OPT_FORCE_PUBKEY:
 319             fkeyfile = opt_arg();
 320             break;
 321         case OPT_SUBJ:
 322             subj = opt_arg();
 323             break;
 324         case OPT_ADDTRUST:
 325             if ((objtmp = OBJ_txt2obj(opt_arg(), 0)) == NULL) {
 326                 BIO_printf(bio_err,
 327                            "%s: Invalid trust object value %s\n",
 328                            prog, opt_arg());
 329                 goto opthelp;
 330             }
 331             if (trust == NULL && (trust = sk_ASN1_OBJECT_new_null()) == NULL)
 332                 goto end;
 333             sk_ASN1_OBJECT_push(trust, objtmp);
 334             objtmp = NULL;
 335             trustout = 1;
 336             break;
 337         case OPT_ADDREJECT:
 338             if ((objtmp = OBJ_txt2obj(opt_arg(), 0)) == NULL) {
 339                 BIO_printf(bio_err,
 340                            "%s: Invalid reject object value %s\n",
 341                            prog, opt_arg());
 342                 goto opthelp;
 343             }
 344             if (reject == NULL
 345                 && (reject = sk_ASN1_OBJECT_new_null()) == NULL)
 346                 goto end;
 347             sk_ASN1_OBJECT_push(reject, objtmp);
 348             objtmp = NULL;
 349             trustout = 1;
 350             break;
 351         case OPT_SETALIAS:
 352             alias = opt_arg();
 353             trustout = 1;
 354             break;
 355         case OPT_CERTOPT:
 356             if (!set_cert_ex(&certflag, opt_arg()))
 357                 goto opthelp;
 358             break;
 359         case OPT_NAMEOPT:
 360             if (!set_nameopt(opt_arg()))
 361                 goto opthelp;
 362             break;
 363         case OPT_ENGINE:
 364             e = setup_engine(opt_arg(), 0);
 365             break;
 366         case OPT_C:
 367             C = ++num;
 368             break;
 369         case OPT_EMAIL:
 370             email = ++num;
 371             break;
 372         case OPT_OCSP_URI:
 373             ocsp_uri = ++num;
 374             break;
 375         case OPT_SERIAL:
 376             serial = ++num;
 377             break;
 378         case OPT_NEXT_SERIAL:
 379             next_serial = ++num;
 380             break;
 381         case OPT_MODULUS:
 382             modulus = ++num;
 383             break;
 384         case OPT_PUBKEY:
 385             pubkey = ++num;
 386             break;
 387         case OPT_X509TOREQ:
 388             x509req = ++num;
 389             break;
 390         case OPT_TEXT:
 391             text = ++num;
 392             break;
 393         case OPT_SUBJECT:
 394             subject = ++num;
 395             break;
 396         case OPT_ISSUER:
 397             issuer = ++num;
 398             break;
 399         case OPT_FINGERPRINT:
 400             fingerprint = ++num;
 401             break;
 402         case OPT_HASH:
 403             subject_hash = ++num;
 404             break;
 405         case OPT_ISSUER_HASH:
 406             issuer_hash = ++num;
 407             break;
 408         case OPT_PURPOSE:
 409             pprint = ++num;
 410             break;
 411         case OPT_STARTDATE:
 412             startdate = ++num;
 413             break;
 414         case OPT_ENDDATE:
 415             enddate = ++num;
 416             break;
 417         case OPT_NOOUT:
 418             noout = ++num;
 419             break;
 420         case OPT_EXT:
 421             ext = ++num;
 422             exts = opt_arg();
 423             break;
 424         case OPT_NOCERT:
 425             nocert = 1;
 426             break;
 427         case OPT_TRUSTOUT:
 428             trustout = 1;
 429             break;
 430         case OPT_CLRTRUST:
 431             clrtrust = ++num;
 432             break;
 433         case OPT_CLRREJECT:
 434             clrreject = ++num;
 435             break;
 436         case OPT_ALIAS:
 437             aliasout = ++num;
 438             break;
 439         case OPT_CACREATESERIAL:
 440             CA_createserial = ++num;
 441             break;
 442         case OPT_CLREXT:
 443             clrext = 1;
 444             break;
 445         case OPT_OCSPID:
 446             ocspid = ++num;
 447             break;
 448         case OPT_BADSIG:
 449             badsig = 1;
 450             break;
 451 #ifndef OPENSSL_NO_MD5
 452         case OPT_SUBJECT_HASH_OLD:
 453             subject_hash_old = ++num;
 454             break;
 455         case OPT_ISSUER_HASH_OLD:
 456             issuer_hash_old = ++num;
 457             break;
 458 #else
 459         case OPT_SUBJECT_HASH_OLD:
 460         case OPT_ISSUER_HASH_OLD:
 461             break;
 462 #endif
 463         case OPT_DATES:
 464             startdate = ++num;
 465             enddate = ++num;
 466             break;
 467         case OPT_CHECKEND:
 468             checkend = 1;
 469             {
 470                 intmax_t temp = 0;
 471                 if (!opt_imax(opt_arg(), &temp))
 472                     goto opthelp;
 473                 checkoffset = (time_t)temp;
 474                 if ((intmax_t)checkoffset != temp) {
 475                     BIO_printf(bio_err, "%s: checkend time out of range %s\n",
 476                                prog, opt_arg());
 477                     goto opthelp;
 478                 }
 479             }
 480             break;
 481         case OPT_CHECKHOST:
 482             checkhost = opt_arg();
 483             break;
 484         case OPT_CHECKEMAIL:
 485             checkemail = opt_arg();
 486             break;
 487         case OPT_CHECKIP:
 488             checkip = opt_arg();
 489             break;
 490         case OPT_PRESERVE_DATES:
 491             if (days != DEF_DAYS)
 492                 goto opthelp;
 493             preserve_dates = 1;
 494             break;
 495         case OPT_MD:
 496             if (!opt_md(opt_unknown(), &digest))
 497                 goto opthelp;
 498         }
 499     }
 500     argc = opt_num_rest();
 501     argv = opt_rest();
 502     if (argc != 0) {
 503         BIO_printf(bio_err, "%s: Unknown parameter %s\n", prog, argv[0]);
 504         goto opthelp;
 505     }
 506
 507     if (!app_passwd(passinarg, NULL, &passin, NULL)) {
 508         BIO_printf(bio_err, "Error getting password\n");
 509         goto end;
 510     }
 511
 512     if (!X509_STORE_set_default_paths_with_libctx(ctx, app_get0_libctx(),
 513                                                   app_get0_propq())) {
 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
 539             && (fsubj = parse_name(subj, chtype, multirdn, "subject")) == NULL)
 540         goto end;
 541
 542     if (CAkeyfile == NULL && CA_flag && CAformat == FORMAT_PEM) {
 543         CAkeyfile = CAfile;
 544     } else if (CA_flag && CAkeyfile == NULL) {
 545         BIO_printf(bio_err,
 546                    "need to specify a CAkey if using the CA command\n");
 547         goto end;
 548     } else if (!CA_flag && CAkeyfile != NULL) {
 549         BIO_printf(bio_err,
 550                    "ignoring -CAkey option since no -CA option is given\n");
 551     }
 552
 553     if (extfile != NULL) {
 554         X509V3_CTX ctx2;
 555         if ((extconf = app_load_config(extfile)) == NULL)
 556             goto end;
 557         if (extsect == NULL) {
 558             extsect = NCONF_get_string(extconf, "default", "extensions");
 559             if (extsect == NULL) {
 560                 ERR_clear_error();
 561                 extsect = "default";
 562             }
 563         }
 564         X509V3_set_ctx_test(&ctx2);
 565         X509V3_set_nconf(&ctx2, extconf);
 566         if (!X509V3_EXT_add_nconf(extconf, &ctx2, extsect, NULL)) {
 567             BIO_printf(bio_err,
 568                        "Error Loading extension section %s\n", extsect);
 569             ERR_print_errors(bio_err);
 570             goto end;
 571         }
 572     }
 573
 574     if (reqfile) {
 575         EVP_PKEY *pkey;
 576
 577         req = load_csr(infile, informat, "certificate request input");
 578         if (req == NULL)
 579             goto end;
 580
 581         if ((pkey = X509_REQ_get0_pubkey(req)) == NULL) {
 582             BIO_printf(bio_err, "error unpacking public key\n");
 583             goto end;
 584         }
 585         i = do_X509_REQ_verify(req, pkey, vfyopts);
 586         if (i < 0) {
 587             BIO_printf(bio_err, "Request self-signature verification error\n");
 588             ERR_print_errors(bio_err);
 589             goto end;
 590         }
 591         if (i == 0) {
 592             BIO_printf(bio_err,
 593                        "Request self-signature did not match the certificate request\n");
 594             goto end;
 595         } else {
 596             BIO_printf(bio_err, "Request self-signature ok\n");
 597         }
 598
 599         print_name(bio_err, "subject=", X509_REQ_get_subject_name(req),
 600                    get_nameopt());
 601     }
 602
 603     if (reqfile || newcert) {
 604         X509_NAME *n;
 605
 606         if (!sign_flag && CAkeyfile == NULL) {
 607             BIO_printf(bio_err,
 608                        "We need a private key to sign with, use -signkey or -CAkey or -CA <file> with private key\n");
 609             goto end;
 610         }
 611         if ((x = X509_new_with_libctx(app_get0_libctx(), app_get0_propq())) == NULL)
 612             goto end;
 613
 614         if (sno == NULL) {
 615             sno = ASN1_INTEGER_new();
 616             if (sno == NULL || !rand_serial(NULL, sno))
 617                 goto end;
 618             if (!X509_set_serialNumber(x, sno))
 619                 goto end;
 620             ASN1_INTEGER_free(sno);
 621             sno = NULL;
 622         } else if (!X509_set_serialNumber(x, sno)) {
 623             goto end;
 624         }
 625
 626         n = req == NULL ? fsubj : X509_REQ_get_subject_name(req);
 627         if (!X509_set_issuer_name(x, n) || !X509_set_subject_name(x, n))
 628             goto end;
 629         if (!set_cert_times(x, NULL, NULL, days))
 630             goto end;
 631
 632         if (!X509_set_pubkey(x, fkey != NULL ? fkey : X509_REQ_get0_pubkey(req)))
 633             goto end;
 634     } else {
 635         x = load_cert_pass(infile, FORMAT_UNDEF, passin, "Certificate");
 636         if (x == NULL)
 637             goto end;
 638         if (fkey != NULL && !X509_set_pubkey(x, fkey))
 639             goto end;
 640         if (fsubj != NULL && !X509_set_subject_name(x, fsubj))
 641             goto end;
 642     }
 643
 644     if (CA_flag) {
 645         xca = load_cert_pass(CAfile, CAformat, passin, "CA Certificate");
 646         if (xca == NULL)
 647             goto end;
 648     }
 649
 650     out = bio_open_default(outfile, 'w', outformat);
 651     if (out == NULL)
 652         goto end;
 653
 654     if (!noout || text || next_serial)
 655         OBJ_create("2.99999.3", "SET.ex3", "SET x509v3 extension 3");
 656
 657     if (alias)
 658         X509_alias_set1(x, (unsigned char *)alias, -1);
 659
 660     if (clrtrust)
 661         X509_trust_clear(x);
 662     if (clrreject)
 663         X509_reject_clear(x);
 664
 665     if (trust != NULL) {
 666         for (i = 0; i < sk_ASN1_OBJECT_num(trust); i++) {
 667             objtmp = sk_ASN1_OBJECT_value(trust, i);
 668             X509_add1_trust_object(x, objtmp);
 669         }
 670         objtmp = NULL;
 671     }
 672
 673     if (reject != NULL) {
 674         for (i = 0; i < sk_ASN1_OBJECT_num(reject); i++) {
 675             objtmp = sk_ASN1_OBJECT_value(reject, i);
 676             X509_add1_reject_object(x, objtmp);
 677         }
 678         objtmp = NULL;
 679     }
 680
 681     if (badsig) {
 682         const ASN1_BIT_STRING *signature;
 683
 684         X509_get0_signature(&signature, NULL, x);
 685         corrupt_signature(signature);
 686     }
 687
 688     if (num) {
 689         for (i = 1; i <= num; i++) {
 690             if (issuer == i) {
 691                 print_name(out, "issuer=", X509_get_issuer_name(x), get_nameopt());
 692             } else if (subject == i) {
 693                 print_name(out, "subject=",
 694                            X509_get_subject_name(x), get_nameopt());
 695             } else if (serial == i) {
 696                 BIO_printf(out, "serial=");
 697                 i2a_ASN1_INTEGER(out, X509_get0_serialNumber(x));
 698                 BIO_printf(out, "\n");
 699             } else if (next_serial == i) {
 700                 ASN1_INTEGER *ser = X509_get_serialNumber(x);
 701                 BIGNUM *bnser = ASN1_INTEGER_to_BN(ser, NULL);
 702
 703                 if (!bnser)
 704                     goto end;
 705                 if (!BN_add_word(bnser, 1))
 706                     goto end;
 707                 ser = BN_to_ASN1_INTEGER(bnser, NULL);
 708                 if (!ser)
 709                     goto end;
 710                 BN_free(bnser);
 711                 i2a_ASN1_INTEGER(out, ser);
 712                 ASN1_INTEGER_free(ser);
 713                 BIO_puts(out, "\n");
 714             } else if (email == i || ocsp_uri == i) {
 715                 int j;
 716                 STACK_OF(OPENSSL_STRING) *emlst;
 717                 if (email == i)
 718                     emlst = X509_get1_email(x);
 719                 else
 720                     emlst = X509_get1_ocsp(x);
 721                 for (j = 0; j < sk_OPENSSL_STRING_num(emlst); j++)
 722                     BIO_printf(out, "%s\n",
 723                                sk_OPENSSL_STRING_value(emlst, j));
 724                 X509_email_free(emlst);
 725             } else if (aliasout == i) {
 726                 unsigned char *alstr;
 727                 alstr = X509_alias_get0(x, NULL);
 728                 if (alstr)
 729                     BIO_printf(out, "%s\n", alstr);
 730                 else
 731                     BIO_puts(out, "<No Alias>\n");
 732             } else if (subject_hash == i) {
 733                 BIO_printf(out, "%08lx\n", X509_subject_name_hash(x));
 734             }
 735 #ifndef OPENSSL_NO_MD5
 736             else if (subject_hash_old == i) {
 737                 BIO_printf(out, "%08lx\n", X509_subject_name_hash_old(x));
 738             }
 739 #endif
 740             else if (issuer_hash == i) {
 741                 BIO_printf(out, "%08lx\n", X509_issuer_name_hash(x));
 742             }
 743 #ifndef OPENSSL_NO_MD5
 744             else if (issuer_hash_old == i) {
 745                 BIO_printf(out, "%08lx\n", X509_issuer_name_hash_old(x));
 746             }
 747 #endif
 748             else if (pprint == i) {
 749                 X509_PURPOSE *ptmp;
 750                 int j;
 751                 BIO_printf(out, "Certificate purposes:\n");
 752                 for (j = 0; j < X509_PURPOSE_get_count(); j++) {
 753                     ptmp = X509_PURPOSE_get0(j);
 754                     purpose_print(out, x, ptmp);
 755                 }
 756             } else if (modulus == i) {
 757                 EVP_PKEY *pkey;
 758
 759                 pkey = X509_get0_pubkey(x);
 760                 if (pkey == NULL) {
 761                     BIO_printf(bio_err, "Modulus=unavailable\n");
 762                     ERR_print_errors(bio_err);
 763                     goto end;
 764                 }
 765                 BIO_printf(out, "Modulus=");
 766 #ifndef OPENSSL_NO_RSA
 767                 if (EVP_PKEY_id(pkey) == EVP_PKEY_RSA) {
 768                     const BIGNUM *n;
 769                     RSA_get0_key(EVP_PKEY_get0_RSA(pkey), &n, NULL, NULL);
 770                     BN_print(out, n);
 771                 } else
 772 #endif
 773 #ifndef OPENSSL_NO_DSA
 774                 if (EVP_PKEY_id(pkey) == EVP_PKEY_DSA) {
 775                     const BIGNUM *dsapub = NULL;
 776                     DSA_get0_key(EVP_PKEY_get0_DSA(pkey), &dsapub, NULL);
 777                     BN_print(out, dsapub);
 778                 } else
 779 #endif
 780                 {
 781                     BIO_printf(out, "Wrong Algorithm type");
 782                 }
 783                 BIO_printf(out, "\n");
 784             } else if (pubkey == i) {
 785                 EVP_PKEY *pkey;
 786
 787                 pkey = X509_get0_pubkey(x);
 788                 if (pkey == NULL) {
 789                     BIO_printf(bio_err, "Error getting public key\n");
 790                     ERR_print_errors(bio_err);
 791                     goto end;
 792                 }
 793                 PEM_write_bio_PUBKEY(out, pkey);
 794             } else if (C == i) {
 795                 unsigned char *d;
 796                 char *m;
 797                 int len;
 798
 799                 print_name(out, "/*\n"
 800                                 " * Subject: ", X509_get_subject_name(x), get_nameopt());
 801                 print_name(out, " * Issuer:  ", X509_get_issuer_name(x), get_nameopt());
 802                 BIO_puts(out, " */\n");
 803
 804                 len = i2d_X509(x, NULL);
 805                 m = app_malloc(len, "x509 name buffer");
 806                 d = (unsigned char *)m;
 807                 len = i2d_X509_NAME(X509_get_subject_name(x), &d);
 808                 print_array(out, "the_subject_name", len, (unsigned char *)m);
 809                 d = (unsigned char *)m;
 810                 len = i2d_X509_PUBKEY(X509_get_X509_PUBKEY(x), &d);
 811                 print_array(out, "the_public_key", len, (unsigned char *)m);
 812                 d = (unsigned char *)m;
 813                 len = i2d_X509(x, &d);
 814                 print_array(out, "the_certificate", len, (unsigned char *)m);
 815                 OPENSSL_free(m);
 816             } else if (text == i) {
 817                 X509_print_ex(out, x, get_nameopt(), certflag);
 818             } else if (startdate == i) {
 819                 BIO_puts(out, "notBefore=");
 820                 ASN1_TIME_print(out, X509_get0_notBefore(x));
 821                 BIO_puts(out, "\n");
 822             } else if (enddate == i) {
 823                 BIO_puts(out, "notAfter=");
 824                 ASN1_TIME_print(out, X509_get0_notAfter(x));
 825                 BIO_puts(out, "\n");
 826             } else if (fingerprint == i) {
 827                 int j;
 828                 unsigned int n;
 829                 unsigned char md[EVP_MAX_MD_SIZE];
 830                 const EVP_MD *fdig = digest;
 831
 832                 if (fdig == NULL)
 833                     fdig = EVP_sha1();
 834
 835                 if (!X509_digest(x, fdig, md, &n)) {
 836                     BIO_printf(bio_err, "out of memory\n");
 837                     goto end;
 838                 }
 839                 BIO_printf(out, "%s Fingerprint=",
 840                            OBJ_nid2sn(EVP_MD_type(fdig)));
 841                 for (j = 0; j < (int)n; j++) {
 842                     BIO_printf(out, "%02X%c", md[j], (j + 1 == (int)n)
 843                                ? '\n' : ':');
 844                 }
 845             }
 846
 847             /* should be in the library */
 848             else if (sign_flag == i && x509req == 0) {
 849                 BIO_printf(bio_err, "Getting Private key\n");
 850                 if (Upkey == NULL) {
 851                     Upkey = load_key(keyfile, keyformat, 0,
 852                                      passin, e, "Private key");
 853                     if (Upkey == NULL)
 854                         goto end;
 855                 }
 856
 857                 if (!sign(x, Upkey, fkey, sigopts, days, clrext, digest,
 858                           extconf, extsect, preserve_dates))
 859                     goto end;
 860             } else if (CA_flag == i) {
 861                 BIO_printf(bio_err, "Getting CA Private Key\n");
 862                 if (CAkeyfile != NULL) {
 863                     CApkey = load_key(CAkeyfile, CAkeyformat,
 864                                       0, passin, e, "CA Private Key");
 865                     if (CApkey == NULL)
 866                         goto end;
 867                 }
 868
 869                 if (!x509_certify(ctx, CAfile, digest, x, xca,
 870                                   CApkey, sigopts,
 871                                   CAserial, CA_createserial, days, clrext,
 872                                   extconf, extsect, sno, reqfile, preserve_dates))
 873                     goto end;
 874             } else if (x509req == i) {
 875                 EVP_PKEY *pk;
 876
 877                 BIO_printf(bio_err, "Getting request Private Key\n");
 878                 if (keyfile == NULL) {
 879                     BIO_printf(bio_err, "no request key file specified\n");
 880                     goto end;
 881                 } else {
 882                     pk = load_key(keyfile, keyformat, 0,
 883                                   passin, e, "request key");
 884                     if (pk == NULL)
 885                         goto end;
 886                 }
 887
 888                 BIO_printf(bio_err, "Generating certificate request\n");
 889
 890                 rq = X509_to_X509_REQ(x, pk, digest);
 891                 EVP_PKEY_free(pk);
 892                 if (rq == NULL) {
 893                     ERR_print_errors(bio_err);
 894                     goto end;
 895                 }
 896                 if (!noout) {
 897                     X509_REQ_print_ex(out, rq, get_nameopt(), X509_FLAG_COMPAT);
 898                     PEM_write_bio_X509_REQ(out, rq);
 899                 }
 900                 noout = 1;
 901             } else if (ocspid == i) {
 902                 X509_ocspid_print(out, x);
 903             } else if (ext == i) {
 904                 print_x509v3_exts(out, x, exts);
 905             }
 906         }
 907     }
 908
 909     if (checkend) {
 910         time_t tcheck = time(NULL) + checkoffset;
 911
 912         if (X509_cmp_time(X509_get0_notAfter(x), &tcheck) < 0) {
 913             BIO_printf(out, "Certificate will expire\n");
 914             ret = 1;
 915         } else {
 916             BIO_printf(out, "Certificate will not expire\n");
 917             ret = 0;
 918         }
 919         goto end;
 920     }
 921
 922     print_cert_checks(out, x, checkhost, checkemail, checkip);
 923
 924     if (noout || nocert) {
 925         ret = 0;
 926         goto end;
 927     }
 928
 929     if (outformat == FORMAT_ASN1) {
 930         i = i2d_X509_bio(out, x);
 931     } else if (outformat == FORMAT_PEM) {
 932         if (trustout)
 933             i = PEM_write_bio_X509_AUX(out, x);
 934         else
 935             i = PEM_write_bio_X509(out, x);
 936     } else {
 937         BIO_printf(bio_err, "bad output format specified for outfile\n");
 938         goto end;
 939     }
 940     if (!i) {
 941         BIO_printf(bio_err, "unable to write certificate\n");
 942         ERR_print_errors(bio_err);
 943         goto end;
 944     }
 945     ret = 0;
 946  end:
 947     NCONF_free(extconf);
 948     BIO_free_all(out);
 949     X509_STORE_free(ctx);
 950     X509_NAME_free(fsubj);
 951     X509_REQ_free(req);
 952     X509_free(x);
 953     X509_free(xca);
 954     EVP_PKEY_free(Upkey);
 955     EVP_PKEY_free(CApkey);
 956     EVP_PKEY_free(fkey);
 957     sk_OPENSSL_STRING_free(sigopts);
 958     sk_OPENSSL_STRING_free(vfyopts);
 959     X509_REQ_free(rq);
 960     ASN1_INTEGER_free(sno);
 961     sk_ASN1_OBJECT_pop_free(trust, ASN1_OBJECT_free);
 962     sk_ASN1_OBJECT_pop_free(reject, ASN1_OBJECT_free);
 963     ASN1_OBJECT_free(objtmp);
 964     release_engine(e);
 965     clear_free(passin);
 966     return ret;
 967 }
 968
 969 static ASN1_INTEGER *x509_load_serial(const char *CAfile,
 970                                       const char *serialfile, int create)
 971 {
 972     char *buf = NULL;
 973     ASN1_INTEGER *bs = NULL;
 974     BIGNUM *serial = NULL;
 975
 976     if (serialfile == NULL) {
 977         const char *p = strrchr(CAfile, '.');
 978         size_t len = p != NULL ? (size_t)(p - CAfile) : strlen(CAfile);
 979
 980         buf = app_malloc(len + sizeof(POSTFIX), "serial# buffer");
 981         memcpy(buf, CAfile, len);
 982         memcpy(buf + len, POSTFIX, sizeof(POSTFIX));
 983         serialfile = buf;
 984     }
 985
 986     serial = load_serial(serialfile, create, NULL);
 987     if (serial == NULL)
 988         goto end;
 989
 990     if (!BN_add_word(serial, 1)) {
 991         BIO_printf(bio_err, "add_word failure\n");
 992         goto end;
 993     }
 994
 995     if (!save_serial(serialfile, NULL, serial, &bs))
 996         goto end;
 997
 998  end:
 999     OPENSSL_free(buf);
1000     BN_free(serial);
1001     return bs;
1002 }
1003
1004 static int x509_certify(X509_STORE *ctx, const char *CAfile, const EVP_MD *digest,
1005                         X509 *x, X509 *xca, EVP_PKEY *pkey,
1006                         STACK_OF(OPENSSL_STRING) *sigopts,
1007                         const char *serialfile, int create,
1008                         int days, int clrext, CONF *conf, const char *section,
1009                         ASN1_INTEGER *sno, int reqfile, int preserve_dates)
1010 {
1011     int ret = 0;
1012     ASN1_INTEGER *bs = NULL;
1013     X509_STORE_CTX *xsc = NULL;
1014     EVP_PKEY *upkey;
1015
1016     upkey = X509_get0_pubkey(xca);
1017     if (upkey == NULL) {
1018         BIO_printf(bio_err, "Error obtaining CA X509 public key\n");
1019         goto end;
1020     }
1021     EVP_PKEY_copy_parameters(upkey, pkey);
1022
1023     xsc = X509_STORE_CTX_new();
1024     if (xsc == NULL || !X509_STORE_CTX_init(xsc, ctx, x, NULL)) {
1025         BIO_printf(bio_err, "Error initialising X509 store\n");
1026         goto end;
1027     }
1028     if (sno)
1029         bs = sno;
1030     else if ((bs = x509_load_serial(CAfile, serialfile, create)) == NULL)
1031         goto end;
1032
1033     /*
1034      * NOTE: this certificate can/should be self-signed, unless it was a
1035      * certificate request in which case it is not.
1036      */
1037     X509_STORE_CTX_set_cert(xsc, x);
1038     X509_STORE_CTX_set_flags(xsc, X509_V_FLAG_CHECK_SS_SIGNATURE);
1039     if (!reqfile && X509_verify_cert(xsc) <= 0)
1040         goto end;
1041
1042     if (!X509_check_private_key(xca, pkey)) {
1043         BIO_printf(bio_err,
1044                    "CA certificate and CA private key do not match\n");
1045         goto end;
1046     }
1047
1048     if (!X509_set_issuer_name(x, X509_get_subject_name(xca)))
1049         goto end;
1050     if (!X509_set_serialNumber(x, bs))
1051         goto end;
1052
1053     if (!preserve_dates && !set_cert_times(x, NULL, NULL, days))
1054         goto end;
1055
1056     if (clrext) {
1057         while (X509_get_ext_count(x) > 0)
1058             X509_delete_ext(x, 0);
1059     }
1060
1061     if (conf != NULL) {
1062         X509V3_CTX ctx2;
1063         X509_set_version(x, 2); /* version 3 certificate */
1064         X509V3_set_ctx(&ctx2, xca, x, NULL, NULL, 0);
1065         X509V3_set_nconf(&ctx2, conf);
1066         if (!X509V3_EXT_add_nconf(conf, &ctx2, section, x))
1067             goto end;
1068     }
1069
1070     if (!do_X509_sign(x, pkey, digest, sigopts))
1071         goto end;
1072     ret = 1;
1073  end:
1074     X509_STORE_CTX_free(xsc);
1075     if (!ret)
1076         ERR_print_errors(bio_err);
1077     if (!sno)
1078         ASN1_INTEGER_free(bs);
1079     return ret;
1080 }
1081
1082 static int callb(int ok, X509_STORE_CTX *ctx)
1083 {
1084     int err;
1085     X509 *err_cert;
1086
1087     /*
1088      * It is ok to use a self-signed certificate. This case will catch both
1089      * the initial ok == 0 and the final ok == 1 calls to this function.
1090      */
1091     err = X509_STORE_CTX_get_error(ctx);
1092     if (err == X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT)
1093         return 1;
1094
1095     /*
1096      * BAD we should have gotten an error.  Normally if everything worked
1097      * X509_STORE_CTX_get_error(ctx) will still be set to
1098      * DEPTH_ZERO_SELF_....
1099      */
1100     if (ok) {
1101         BIO_printf(bio_err,
1102                    "error with certificate to be certified - should be self-signed\n");
1103         return 0;
1104     } else {
1105         err_cert = X509_STORE_CTX_get_current_cert(ctx);
1106         print_name(bio_err, NULL, X509_get_subject_name(err_cert), 0);
1107         BIO_printf(bio_err,
1108                    "error with certificate - error %d at depth %d\n%s\n", err,
1109                    X509_STORE_CTX_get_error_depth(ctx),
1110                    X509_verify_cert_error_string(err));
1111         return 1;
1112     }
1113 }
1114
1115 /* self-issue; self-sign unless a forced public key (fkey) is given */
1116 static int sign(X509 *x, EVP_PKEY *pkey, EVP_PKEY *fkey,
1117                 STACK_OF(OPENSSL_STRING) *sigopts,
1118                 int days, int clrext,
1119                 const EVP_MD *digest, CONF *conf, const char *section,
1120                 int preserve_dates)
1121 {
1122     if (!X509_set_issuer_name(x, X509_get_subject_name(x)))
1123         goto err;
1124     if (!preserve_dates && !set_cert_times(x, NULL, NULL, days))
1125         goto err;
1126     if (fkey == NULL && !X509_set_pubkey(x, pkey))
1127         goto err;
1128     if (clrext) {
1129         while (X509_get_ext_count(x) > 0)
1130             X509_delete_ext(x, 0);
1131     }
1132     if (conf != NULL) {
1133         X509V3_CTX ctx;
1134         X509_set_version(x, 2); /* version 3 certificate */
1135         X509V3_set_ctx(&ctx, x, x, NULL, NULL, 0);
1136         X509V3_set_nconf(&ctx, conf);
1137         if (!X509V3_EXT_add_nconf(conf, &ctx, section, x))
1138             goto err;
1139     }
1140     if (!do_X509_sign(x, pkey, digest, sigopts))
1141         goto err;
1142     return 1;
1143  err:
1144     ERR_print_errors(bio_err);
1145     return 0;
1146 }
1147
1148 static int purpose_print(BIO *bio, X509 *cert, X509_PURPOSE *pt)
1149 {
1150     int id, i, idret;
1151     const char *pname;
1152     id = X509_PURPOSE_get_id(pt);
1153     pname = X509_PURPOSE_get0_name(pt);
1154     for (i = 0; i < 2; i++) {
1155         idret = X509_check_purpose(cert, id, i);
1156         BIO_printf(bio, "%s%s : ", pname, i ? " CA" : "");
1157         if (idret == 1)
1158             BIO_printf(bio, "Yes\n");
1159         else if (idret == 0)
1160             BIO_printf(bio, "No\n");
1161         else
1162             BIO_printf(bio, "Yes (WARNING code=%d)\n", idret);
1163     }
1164     return 1;
1165 }
1166
1167 static int parse_ext_names(char *names, const char **result)
1168 {
1169     char *p, *q;
1170     int cnt = 0, len = 0;
1171
1172     p = q = names;
1173     len = strlen(names);
1174
1175     while (q - names <= len) {
1176         if (*q != ',' && *q != '\0') {
1177             q++;
1178             continue;
1179         }
1180         if (p != q) {
1181             /* found */
1182             if (result != NULL) {
1183                 result[cnt] = p;
1184                 *q = '\0';
1185             }
1186             cnt++;
1187         }
1188         p = ++q;
1189     }
1190
1191     return cnt;
1192 }
1193
1194 static int print_x509v3_exts(BIO *bio, X509 *x, const char *ext_names)
1195 {
1196     const STACK_OF(X509_EXTENSION) *exts = NULL;
1197     STACK_OF(X509_EXTENSION) *exts2 = NULL;
1198     X509_EXTENSION *ext = NULL;
1199     ASN1_OBJECT *obj;
1200     int i, j, ret = 0, num, nn = 0;
1201     const char *sn, **names = NULL;
1202     char *tmp_ext_names = NULL;
1203
1204     exts = X509_get0_extensions(x);
1205     if ((num = sk_X509_EXTENSION_num(exts)) <= 0) {
1206         BIO_printf(bio, "No extensions in certificate\n");
1207         ret = 1;
1208         goto end;
1209     }
1210
1211     /* parse comma separated ext name string */
1212     if ((tmp_ext_names = OPENSSL_strdup(ext_names)) == NULL)
1213         goto end;
1214     if ((nn = parse_ext_names(tmp_ext_names, NULL)) == 0) {
1215         BIO_printf(bio, "Invalid extension names: %s\n", ext_names);
1216         goto end;
1217     }
1218     if ((names = OPENSSL_malloc(sizeof(char *) * nn)) == NULL)
1219         goto end;
1220     parse_ext_names(tmp_ext_names, names);
1221
1222     for (i = 0; i < num; i++) {
1223         ext = sk_X509_EXTENSION_value(exts, i);
1224
1225         /* check if this ext is what we want */
1226         obj = X509_EXTENSION_get_object(ext);
1227         sn = OBJ_nid2sn(OBJ_obj2nid(obj));
1228         if (sn == NULL || strcmp(sn, "UNDEF") == 0)
1229             continue;
1230
1231         for (j = 0; j < nn; j++) {
1232             if (strcmp(sn, names[j]) == 0) {
1233                 /* push the extension into a new stack */
1234                 if (exts2 == NULL
1235                     && (exts2 = sk_X509_EXTENSION_new_null()) == NULL)
1236                     goto end;
1237                 if (!sk_X509_EXTENSION_push(exts2, ext))
1238                     goto end;
1239             }
1240         }
1241     }
1242
1243     if (!sk_X509_EXTENSION_num(exts2)) {
1244         BIO_printf(bio, "No extensions matched with %s\n", ext_names);
1245         ret = 1;
1246         goto end;
1247     }
1248
1249     ret = X509V3_extensions_print(bio, NULL, exts2, 0, 0);
1250  end:
1251     sk_X509_EXTENSION_free(exts2);
1252     OPENSSL_free(names);
1253     OPENSSL_free(tmp_ext_names);
1254     return ret;
1255 }