apps/x509.c

   1 /*
   2  * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the OpenSSL license (the "License").  You may not use
   5  * this file except in compliance with the License.  You can obtain a copy
   6  * in the file LICENSE in the source distribution or at
   7  * https://www.openssl.org/source/license.html
   8  */
   9
  10 #include <stdio.h>
  11 #include <stdlib.h>
  12 #include <string.h>
  13 #include "apps.h"
  14 #include <openssl/bio.h>
  15 #include <openssl/asn1.h>
  16 #include <openssl/err.h>
  17 #include <openssl/bn.h>
  18 #include <openssl/evp.h>
  19 #include <openssl/x509.h>
  20 #include <openssl/x509v3.h>
  21 #include <openssl/objects.h>
  22 #include <openssl/pem.h>
  23 #ifndef OPENSSL_NO_RSA
  24 # include <openssl/rsa.h>
  25 #endif
  26 #ifndef OPENSSL_NO_DSA
  27 # include <openssl/dsa.h>
  28 #endif
  29
  30 #undef POSTFIX
  31 #define POSTFIX ".srl"
  32 #define DEF_DAYS        30
  33
  34 static int callb(int ok, X509_STORE_CTX *ctx);
  35 static int sign(X509 *x, EVP_PKEY *pkey, int days, int clrext,
  36                 const EVP_MD *digest, CONF *conf, const char *section);
  37 static int x509_certify(X509_STORE *ctx, const char *CAfile, const EVP_MD *digest,
  38                         X509 *x, X509 *xca, EVP_PKEY *pkey,
  39                         STACK_OF(OPENSSL_STRING) *sigopts, const char *serialfile,
  40                         int create, int days, int clrext, CONF *conf,
  41                         const char *section, ASN1_INTEGER *sno, int reqfile);
  42 static int purpose_print(BIO *bio, X509 *cert, X509_PURPOSE *pt);
  43
  44 typedef enum OPTION_choice {
  45     OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
  46     OPT_INFORM, OPT_OUTFORM, OPT_KEYFORM, OPT_REQ, OPT_CAFORM,
  47     OPT_CAKEYFORM, OPT_SIGOPT, OPT_DAYS, OPT_PASSIN, OPT_EXTFILE,
  48     OPT_EXTENSIONS, OPT_IN, OPT_OUT, OPT_SIGNKEY, OPT_CA,
  49     OPT_CAKEY, OPT_CASERIAL, OPT_SET_SERIAL, OPT_FORCE_PUBKEY,
  50     OPT_ADDTRUST, OPT_ADDREJECT, OPT_SETALIAS, OPT_CERTOPT, OPT_NAMEOPT,
  51     OPT_C, OPT_EMAIL, OPT_OCSP_URI, OPT_SERIAL, OPT_NEXT_SERIAL,
  52     OPT_MODULUS, OPT_PUBKEY, OPT_X509TOREQ, OPT_TEXT, OPT_HASH,
  53     OPT_ISSUER_HASH, OPT_SUBJECT, OPT_ISSUER, OPT_FINGERPRINT, OPT_DATES,
  54     OPT_PURPOSE, OPT_STARTDATE, OPT_ENDDATE, OPT_CHECKEND, OPT_CHECKHOST,
  55     OPT_CHECKEMAIL, OPT_CHECKIP, OPT_NOOUT, OPT_TRUSTOUT, OPT_CLRTRUST,
  56     OPT_CLRREJECT, OPT_ALIAS, OPT_CACREATESERIAL, OPT_CLREXT, OPT_OCSPID,
  57     OPT_SUBJECT_HASH_OLD,
  58     OPT_ISSUER_HASH_OLD,
  59     OPT_BADSIG, OPT_MD, OPT_ENGINE, OPT_NOCERT
  60 } OPTION_CHOICE;
  61
  62 OPTIONS x509_options[] = {
  63     {"help", OPT_HELP, '-', "Display this summary"},
  64     {"inform", OPT_INFORM, 'f',
  65      "Input format - default PEM (one of DER, NET or PEM)"},
  66     {"in", OPT_IN, '<', "Input file - default stdin"},
  67     {"outform", OPT_OUTFORM, 'f',
  68      "Output format - default PEM (one of DER, NET or PEM)"},
  69     {"out", OPT_OUT, '>', "Output file - default stdout"},
  70     {"keyform", OPT_KEYFORM, 'F', "Private key format - default PEM"},
  71     {"passin", OPT_PASSIN, 's', "Private key password/pass-phrase source"},
  72     {"serial", OPT_SERIAL, '-', "Print serial number value"},
  73     {"subject_hash", OPT_HASH, '-', "Print subject hash value"},
  74     {"issuer_hash", OPT_ISSUER_HASH, '-', "Print issuer hash value"},
  75     {"hash", OPT_HASH, '-', "Synonym for -subject_hash"},
  76     {"subject", OPT_SUBJECT, '-', "Print subject DN"},
  77     {"issuer", OPT_ISSUER, '-', "Print issuer DN"},
  78     {"email", OPT_EMAIL, '-', "Print email address(es)"},
  79     {"startdate", OPT_STARTDATE, '-', "Set notBefore field"},
  80     {"enddate", OPT_ENDDATE, '-', "Set notAfter field"},
  81     {"purpose", OPT_PURPOSE, '-', "Print out certificate purposes"},
  82     {"dates", OPT_DATES, '-', "Both Before and After dates"},
  83     {"modulus", OPT_MODULUS, '-', "Print the RSA key modulus"},
  84     {"pubkey", OPT_PUBKEY, '-', "Output the public key"},
  85     {"fingerprint", OPT_FINGERPRINT, '-',
  86      "Print the certificate fingerprint"},
  87     {"alias", OPT_ALIAS, '-', "Output certificate alias"},
  88     {"noout", OPT_NOOUT, '-', "No output, just status"},
  89     {"nocert", OPT_NOCERT, '-', "No certificate output"},
  90     {"ocspid", OPT_OCSPID, '-',
  91      "Print OCSP hash values for the subject name and public key"},
  92     {"ocsp_uri", OPT_OCSP_URI, '-', "Print OCSP Responder URL(s)"},
  93     {"trustout", OPT_TRUSTOUT, '-', "Output a trusted certificate"},
  94     {"clrtrust", OPT_CLRTRUST, '-', "Clear all trusted purposes"},
  95     {"clrext", OPT_CLREXT, '-', "Clear all rejected purposes"},
  96     {"addtrust", OPT_ADDTRUST, 's', "Trust certificate for a given purpose"},
  97     {"addreject", OPT_ADDREJECT, 's',
  98      "Reject certificate for a given purpose"},
  99     {"setalias", OPT_SETALIAS, 's', "Set certificate alias"},
 100     {"days", OPT_DAYS, 'n',
 101      "How long till expiry of a signed certificate - def 30 days"},
 102     {"checkend", OPT_CHECKEND, 'M',
 103      "Check whether the cert expires in the next arg seconds"},
 104     {OPT_MORE_STR, 1, 1, "Exit 1 if so, 0 if not"},
 105     {"signkey", OPT_SIGNKEY, '<', "Self sign cert with arg"},
 106     {"x509toreq", OPT_X509TOREQ, '-',
 107      "Output a certification request object"},
 108     {"req", OPT_REQ, '-', "Input is a certificate request, sign and output"},
 109     {"CA", OPT_CA, '<', "Set the CA certificate, must be PEM format"},
 110     {"CAkey", OPT_CAKEY, 's',
 111      "The CA key, must be PEM format; if not in CAfile"},
 112     {"CAcreateserial", OPT_CACREATESERIAL, '-',
 113      "Create serial number file if it does not exist"},
 114     {"CAserial", OPT_CASERIAL, 's', "Serial file"},
 115     {"set_serial", OPT_SET_SERIAL, 's', "Serial number to use"},
 116     {"text", OPT_TEXT, '-', "Print the certificate in text form"},
 117     {"C", OPT_C, '-', "Print out C code forms"},
 118     {"extfile", OPT_EXTFILE, '<', "File with X509V3 extensions to add"},
 119     {"extensions", OPT_EXTENSIONS, 's', "Section from config file to use"},
 120     {"nameopt", OPT_NAMEOPT, 's', "Various certificate name options"},
 121     {"certopt", OPT_CERTOPT, 's', "Various certificate text options"},
 122     {"checkhost", OPT_CHECKHOST, 's', "Check certificate matches host"},
 123     {"checkemail", OPT_CHECKEMAIL, 's', "Check certificate matches email"},
 124     {"checkip", OPT_CHECKIP, 's', "Check certificate matches ipaddr"},
 125     {"CAform", OPT_CAFORM, 'F', "CA format - default PEM"},
 126     {"CAkeyform", OPT_CAKEYFORM, 'F', "CA key format - default PEM"},
 127     {"sigopt", OPT_SIGOPT, 's', "Signature parameter in n:v form"},
 128     {"force_pubkey", OPT_FORCE_PUBKEY, '<'},
 129     {"next_serial", OPT_NEXT_SERIAL, '-'},
 130     {"clrreject", OPT_CLRREJECT, '-'},
 131     {"badsig", OPT_BADSIG, '-', "Corrupt last byte of certificate signature (for test)"},
 132     {"", OPT_MD, '-', "Any supported digest"},
 133 #ifndef OPENSSL_NO_MD5
 134     {"subject_hash_old", OPT_SUBJECT_HASH_OLD, '-',
 135      "Print old-style (MD5) issuer hash value"},
 136     {"issuer_hash_old", OPT_ISSUER_HASH_OLD, '-',
 137      "Print old-style (MD5) subject hash value"},
 138 #endif
 139 #ifndef OPENSSL_NO_ENGINE
 140     {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
 141 #endif
 142     {NULL}
 143 };
 144
 145 int x509_main(int argc, char **argv)
 146 {
 147     ASN1_INTEGER *sno = NULL;
 148     ASN1_OBJECT *objtmp = NULL;
 149     BIO *out = NULL;
 150     CONF *extconf = NULL;
 151     EVP_PKEY *Upkey = NULL, *CApkey = NULL, *fkey = NULL;
 152     STACK_OF(ASN1_OBJECT) *trust = NULL, *reject = NULL;
 153     STACK_OF(OPENSSL_STRING) *sigopts = NULL;
 154     X509 *x = NULL, *xca = NULL;
 155     X509_REQ *req = NULL, *rq = NULL;
 156     X509_STORE *ctx = NULL;
 157     const EVP_MD *digest = NULL;
 158     char *CAkeyfile = NULL, *CAserial = NULL, *fkeyfile = NULL, *alias = NULL;
 159     char *checkhost = NULL, *checkemail = NULL, *checkip = NULL;
 160     char *extsect = NULL, *extfile = NULL, *passin = NULL, *passinarg = NULL;
 161     char *infile = NULL, *outfile = NULL, *keyfile = NULL, *CAfile = NULL;
 162     char buf[256], *prog;
 163     int x509req = 0, days = DEF_DAYS, modulus = 0, pubkey = 0, pprint = 0;
 164     int C = 0, CAformat = FORMAT_PEM, CAkeyformat = FORMAT_PEM;
 165     int fingerprint = 0, reqfile = 0, need_rand = 0, checkend = 0;
 166     int informat = FORMAT_PEM, outformat = FORMAT_PEM, keyformat = FORMAT_PEM;
 167     int next_serial = 0, subject_hash = 0, issuer_hash = 0, ocspid = 0;
 168     int noout = 0, sign_flag = 0, CA_flag = 0, CA_createserial = 0, email = 0;
 169     int ocsp_uri = 0, trustout = 0, clrtrust = 0, clrreject = 0, aliasout = 0;
 170     int ret = 1, i, num = 0, badsig = 0, clrext = 0, nocert = 0;
 171     int text = 0, serial = 0, subject = 0, issuer = 0, startdate = 0;
 172     int enddate = 0;
 173     time_t checkoffset = 0;
 174     unsigned long nmflag = 0, certflag = 0;
 175     char nmflag_set = 0;
 176     OPTION_CHOICE o;
 177     ENGINE *e = NULL;
 178 #ifndef OPENSSL_NO_MD5
 179     int subject_hash_old = 0, issuer_hash_old = 0;
 180 #endif
 181
 182     ctx = X509_STORE_new();
 183     if (ctx == NULL)
 184         goto end;
 185     X509_STORE_set_verify_cb(ctx, callb);
 186
 187     prog = opt_init(argc, argv, x509_options);
 188     while ((o = opt_next()) != OPT_EOF) {
 189         switch (o) {
 190         case OPT_EOF:
 191         case OPT_ERR:
 192  opthelp:
 193             BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
 194             goto end;
 195         case OPT_HELP:
 196             opt_help(x509_options);
 197             ret = 0;
 198             goto end;
 199         case OPT_INFORM:
 200             if (!opt_format(opt_arg(), OPT_FMT_ANY, &informat))
 201                 goto opthelp;
 202             break;
 203         case OPT_IN:
 204             infile = opt_arg();
 205             break;
 206         case OPT_OUTFORM:
 207             if (!opt_format(opt_arg(), OPT_FMT_ANY, &outformat))
 208                 goto opthelp;
 209             break;
 210         case OPT_KEYFORM:
 211             if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &keyformat))
 212                 goto opthelp;
 213             break;
 214         case OPT_CAFORM:
 215             if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &CAformat))
 216                 goto opthelp;
 217             break;
 218         case OPT_CAKEYFORM:
 219             if (!opt_format(opt_arg(), OPT_FMT_ANY, &CAkeyformat))
 220                 goto opthelp;
 221             break;
 222         case OPT_OUT:
 223             outfile = opt_arg();
 224             break;
 225         case OPT_REQ:
 226             reqfile = need_rand = 1;
 227             break;
 228
 229         case OPT_SIGOPT:
 230             if (!sigopts)
 231                 sigopts = sk_OPENSSL_STRING_new_null();
 232             if (!sigopts || !sk_OPENSSL_STRING_push(sigopts, opt_arg()))
 233                 goto opthelp;
 234             break;
 235         case OPT_DAYS:
 236             days = atoi(opt_arg());
 237             break;
 238         case OPT_PASSIN:
 239             passinarg = opt_arg();
 240             break;
 241         case OPT_EXTFILE:
 242             extfile = opt_arg();
 243             break;
 244         case OPT_EXTENSIONS:
 245             extsect = opt_arg();
 246             break;
 247         case OPT_SIGNKEY:
 248             keyfile = opt_arg();
 249             sign_flag = ++num;
 250             need_rand = 1;
 251             break;
 252         case OPT_CA:
 253             CAfile = opt_arg();
 254             CA_flag = ++num;
 255             need_rand = 1;
 256             break;
 257         case OPT_CAKEY:
 258             CAkeyfile = opt_arg();
 259             break;
 260         case OPT_CASERIAL:
 261             CAserial = opt_arg();
 262             break;
 263         case OPT_SET_SERIAL:
 264             if (sno != NULL) {
 265                 BIO_printf(bio_err, "Serial number supplied twice\n");
 266                 goto opthelp;
 267             }
 268             if ((sno = s2i_ASN1_INTEGER(NULL, opt_arg())) == NULL)
 269                 goto opthelp;
 270             break;
 271         case OPT_FORCE_PUBKEY:
 272             fkeyfile = opt_arg();
 273             break;
 274         case OPT_ADDTRUST:
 275             if ((objtmp = OBJ_txt2obj(opt_arg(), 0)) == NULL) {
 276                 BIO_printf(bio_err,
 277                            "%s: Invalid trust object value %s\n",
 278                            prog, opt_arg());
 279                 goto opthelp;
 280             }
 281             if (trust == NULL && (trust = sk_ASN1_OBJECT_new_null()) == NULL)
 282                 goto end;
 283             sk_ASN1_OBJECT_push(trust, objtmp);
 284             objtmp = NULL;
 285             trustout = 1;
 286             break;
 287         case OPT_ADDREJECT:
 288             if ((objtmp = OBJ_txt2obj(opt_arg(), 0)) == NULL) {
 289                 BIO_printf(bio_err,
 290                            "%s: Invalid reject object value %s\n",
 291                            prog, opt_arg());
 292                 goto opthelp;
 293             }
 294             if (reject == NULL
 295                 && (reject = sk_ASN1_OBJECT_new_null()) == NULL)
 296                 goto end;
 297             sk_ASN1_OBJECT_push(reject, objtmp);
 298             objtmp = NULL;
 299             trustout = 1;
 300             break;
 301         case OPT_SETALIAS:
 302             alias = opt_arg();
 303             trustout = 1;
 304             break;
 305         case OPT_CERTOPT:
 306             if (!set_cert_ex(&certflag, opt_arg()))
 307                 goto opthelp;
 308             break;
 309         case OPT_NAMEOPT:
 310             nmflag_set = 1;
 311             if (!set_name_ex(&nmflag, opt_arg()))
 312                 goto opthelp;
 313             break;
 314         case OPT_ENGINE:
 315             e = setup_engine(opt_arg(), 0);
 316             break;
 317         case OPT_C:
 318             C = ++num;
 319             break;
 320         case OPT_EMAIL:
 321             email = ++num;
 322             break;
 323         case OPT_OCSP_URI:
 324             ocsp_uri = ++num;
 325             break;
 326         case OPT_SERIAL:
 327             serial = ++num;
 328             break;
 329         case OPT_NEXT_SERIAL:
 330             next_serial = ++num;
 331             break;
 332         case OPT_MODULUS:
 333             modulus = ++num;
 334             break;
 335         case OPT_PUBKEY:
 336             pubkey = ++num;
 337             break;
 338         case OPT_X509TOREQ:
 339             x509req = ++num;
 340             break;
 341         case OPT_TEXT:
 342             text = ++num;
 343             break;
 344         case OPT_SUBJECT:
 345             subject = ++num;
 346             break;
 347         case OPT_ISSUER:
 348             issuer = ++num;
 349             break;
 350         case OPT_FINGERPRINT:
 351             fingerprint = ++num;
 352             break;
 353         case OPT_HASH:
 354             subject_hash = ++num;
 355             break;
 356         case OPT_ISSUER_HASH:
 357             issuer_hash = ++num;
 358             break;
 359         case OPT_PURPOSE:
 360             pprint = ++num;
 361             break;
 362         case OPT_STARTDATE:
 363             startdate = ++num;
 364             break;
 365         case OPT_ENDDATE:
 366             enddate = ++num;
 367             break;
 368         case OPT_NOOUT:
 369             noout = ++num;
 370             break;
 371         case OPT_NOCERT:
 372             nocert = 1;
 373             break;
 374         case OPT_TRUSTOUT:
 375             trustout = 1;
 376             break;
 377         case OPT_CLRTRUST:
 378             clrtrust = ++num;
 379             break;
 380         case OPT_CLRREJECT:
 381             clrreject = ++num;
 382             break;
 383         case OPT_ALIAS:
 384             aliasout = ++num;
 385             break;
 386         case OPT_CACREATESERIAL:
 387             CA_createserial = ++num;
 388             break;
 389         case OPT_CLREXT:
 390             clrext = 1;
 391             break;
 392         case OPT_OCSPID:
 393             ocspid = ++num;
 394             break;
 395         case OPT_BADSIG:
 396             badsig = 1;
 397             break;
 398 #ifndef OPENSSL_NO_MD5
 399         case OPT_SUBJECT_HASH_OLD:
 400             subject_hash_old = ++num;
 401             break;
 402         case OPT_ISSUER_HASH_OLD:
 403             issuer_hash_old = ++num;
 404             break;
 405 #else
 406         case OPT_SUBJECT_HASH_OLD:
 407         case OPT_ISSUER_HASH_OLD:
 408             break;
 409 #endif
 410         case OPT_DATES:
 411             startdate = ++num;
 412             enddate = ++num;
 413             break;
 414         case OPT_CHECKEND:
 415             checkend = 1;
 416             {
 417                 intmax_t temp = 0;
 418                 if (!opt_imax(opt_arg(), &temp))
 419                     goto opthelp;
 420                 checkoffset = (time_t)temp;
 421                 if ((intmax_t)checkoffset != temp) {
 422                     BIO_printf(bio_err, "%s: checkend time out of range %s\n",
 423                                prog, opt_arg());
 424                     goto opthelp;
 425                 }
 426             }
 427             break;
 428         case OPT_CHECKHOST:
 429             checkhost = opt_arg();
 430             break;
 431         case OPT_CHECKEMAIL:
 432             checkemail = opt_arg();
 433             break;
 434         case OPT_CHECKIP:
 435             checkip = opt_arg();
 436             break;
 437         case OPT_MD:
 438             if (!opt_md(opt_unknown(), &digest))
 439                 goto opthelp;
 440         }
 441     }
 442     argc = opt_num_rest();
 443     argv = opt_rest();
 444     if (argc != 0) {
 445         BIO_printf(bio_err, "%s: Unknown parameter %s\n", prog, argv[0]);
 446         goto opthelp;
 447     }
 448
 449     if (!nmflag_set)
 450         nmflag = XN_FLAG_ONELINE;
 451
 452     out = bio_open_default(outfile, 'w', outformat);
 453     if (out == NULL)
 454         goto end;
 455
 456     if (need_rand)
 457         app_RAND_load_file(NULL, 0);
 458
 459     if (!app_passwd(passinarg, NULL, &passin, NULL)) {
 460         BIO_printf(bio_err, "Error getting password\n");
 461         goto end;
 462     }
 463
 464     if (!X509_STORE_set_default_paths(ctx)) {
 465         ERR_print_errors(bio_err);
 466         goto end;
 467     }
 468
 469     if (fkeyfile) {
 470         fkey = load_pubkey(fkeyfile, keyformat, 0, NULL, e, "Forced key");
 471         if (fkey == NULL)
 472             goto end;
 473     }
 474
 475     if ((CAkeyfile == NULL) && (CA_flag) && (CAformat == FORMAT_PEM)) {
 476         CAkeyfile = CAfile;
 477     } else if ((CA_flag) && (CAkeyfile == NULL)) {
 478         BIO_printf(bio_err,
 479                    "need to specify a CAkey if using the CA command\n");
 480         goto end;
 481     }
 482
 483     if (extfile) {
 484         X509V3_CTX ctx2;
 485         if ((extconf = app_load_config(extfile)) == NULL)
 486             goto end;
 487         if (!extsect) {
 488             extsect = NCONF_get_string(extconf, "default", "extensions");
 489             if (!extsect) {
 490                 ERR_clear_error();
 491                 extsect = "default";
 492             }
 493         }
 494         X509V3_set_ctx_test(&ctx2);
 495         X509V3_set_nconf(&ctx2, extconf);
 496         if (!X509V3_EXT_add_nconf(extconf, &ctx2, extsect, NULL)) {
 497             BIO_printf(bio_err,
 498                        "Error Loading extension section %s\n", extsect);
 499             ERR_print_errors(bio_err);
 500             goto end;
 501         }
 502     }
 503
 504     if (reqfile) {
 505         EVP_PKEY *pkey;
 506         BIO *in;
 507
 508         if (!sign_flag && !CA_flag) {
 509             BIO_printf(bio_err, "We need a private key to sign with\n");
 510             goto end;
 511         }
 512         in = bio_open_default(infile, 'r', informat);
 513         if (in == NULL)
 514             goto end;
 515         req = PEM_read_bio_X509_REQ(in, NULL, NULL, NULL);
 516         BIO_free(in);
 517
 518         if (req == NULL) {
 519             ERR_print_errors(bio_err);
 520             goto end;
 521         }
 522
 523         if ((pkey = X509_REQ_get0_pubkey(req)) == NULL) {
 524             BIO_printf(bio_err, "error unpacking public key\n");
 525             goto end;
 526         }
 527         i = X509_REQ_verify(req, pkey);
 528         if (i < 0) {
 529             BIO_printf(bio_err, "Signature verification error\n");
 530             ERR_print_errors(bio_err);
 531             goto end;
 532         }
 533         if (i == 0) {
 534             BIO_printf(bio_err,
 535                        "Signature did not match the certificate request\n");
 536             goto end;
 537         } else
 538             BIO_printf(bio_err, "Signature ok\n");
 539
 540         print_name(bio_err, "subject=", X509_REQ_get_subject_name(req),
 541                    nmflag);
 542
 543         if ((x = X509_new()) == NULL)
 544             goto end;
 545
 546         if (sno == NULL) {
 547             sno = ASN1_INTEGER_new();
 548             if (sno == NULL || !rand_serial(NULL, sno))
 549                 goto end;
 550             if (!X509_set_serialNumber(x, sno))
 551                 goto end;
 552             ASN1_INTEGER_free(sno);
 553             sno = NULL;
 554         } else if (!X509_set_serialNumber(x, sno))
 555             goto end;
 556
 557         if (!X509_set_issuer_name(x, X509_REQ_get_subject_name(req)))
 558             goto end;
 559         if (!X509_set_subject_name(x, X509_REQ_get_subject_name(req)))
 560             goto end;
 561         if (!set_cert_times(x, NULL, NULL, days))
 562             goto end;
 563
 564         if (fkey)
 565             X509_set_pubkey(x, fkey);
 566         else {
 567             pkey = X509_REQ_get0_pubkey(req);
 568             X509_set_pubkey(x, pkey);
 569         }
 570     } else
 571         x = load_cert(infile, informat, "Certificate");
 572
 573     if (x == NULL)
 574         goto end;
 575     if (CA_flag) {
 576         xca = load_cert(CAfile, CAformat, "CA Certificate");
 577         if (xca == NULL)
 578             goto end;
 579     }
 580
 581     if (!noout || text || next_serial) {
 582         OBJ_create("2.99999.3", "SET.ex3", "SET x509v3 extension 3");
 583
 584     }
 585
 586     if (alias)
 587         X509_alias_set1(x, (unsigned char *)alias, -1);
 588
 589     if (clrtrust)
 590         X509_trust_clear(x);
 591     if (clrreject)
 592         X509_reject_clear(x);
 593
 594     if (trust) {
 595         for (i = 0; i < sk_ASN1_OBJECT_num(trust); i++) {
 596             objtmp = sk_ASN1_OBJECT_value(trust, i);
 597             X509_add1_trust_object(x, objtmp);
 598         }
 599         objtmp = NULL;
 600     }
 601
 602     if (reject) {
 603         for (i = 0; i < sk_ASN1_OBJECT_num(reject); i++) {
 604             objtmp = sk_ASN1_OBJECT_value(reject, i);
 605             X509_add1_reject_object(x, objtmp);
 606         }
 607         objtmp = NULL;
 608     }
 609
 610     if (badsig) {
 611         const ASN1_BIT_STRING *signature;
 612
 613         X509_get0_signature(&signature, NULL, x);
 614         corrupt_signature(signature);
 615     }
 616
 617     if (num) {
 618         for (i = 1; i <= num; i++) {
 619             if (issuer == i) {
 620                 print_name(out, "issuer=", X509_get_issuer_name(x), nmflag);
 621             } else if (subject == i) {
 622                 print_name(out, "subject=",
 623                            X509_get_subject_name(x), nmflag);
 624             } else if (serial == i) {
 625                 BIO_printf(out, "serial=");
 626                 i2a_ASN1_INTEGER(out, X509_get_serialNumber(x));
 627                 BIO_printf(out, "\n");
 628             } else if (next_serial == i) {
 629                 BIGNUM *bnser;
 630                 ASN1_INTEGER *ser;
 631                 ser = X509_get_serialNumber(x);
 632                 bnser = ASN1_INTEGER_to_BN(ser, NULL);
 633                 if (!bnser)
 634                     goto end;
 635                 if (!BN_add_word(bnser, 1))
 636                     goto end;
 637                 ser = BN_to_ASN1_INTEGER(bnser, NULL);
 638                 if (!ser)
 639                     goto end;
 640                 BN_free(bnser);
 641                 i2a_ASN1_INTEGER(out, ser);
 642                 ASN1_INTEGER_free(ser);
 643                 BIO_puts(out, "\n");
 644             } else if ((email == i) || (ocsp_uri == i)) {
 645                 int j;
 646                 STACK_OF(OPENSSL_STRING) *emlst;
 647                 if (email == i)
 648                     emlst = X509_get1_email(x);
 649                 else
 650                     emlst = X509_get1_ocsp(x);
 651                 for (j = 0; j < sk_OPENSSL_STRING_num(emlst); j++)
 652                     BIO_printf(out, "%s\n",
 653                                sk_OPENSSL_STRING_value(emlst, j));
 654                 X509_email_free(emlst);
 655             } else if (aliasout == i) {
 656                 unsigned char *alstr;
 657                 alstr = X509_alias_get0(x, NULL);
 658                 if (alstr)
 659                     BIO_printf(out, "%s\n", alstr);
 660                 else
 661                     BIO_puts(out, "<No Alias>\n");
 662             } else if (subject_hash == i) {
 663                 BIO_printf(out, "%08lx\n", X509_subject_name_hash(x));
 664             }
 665 #ifndef OPENSSL_NO_MD5
 666             else if (subject_hash_old == i) {
 667                 BIO_printf(out, "%08lx\n", X509_subject_name_hash_old(x));
 668             }
 669 #endif
 670             else if (issuer_hash == i) {
 671                 BIO_printf(out, "%08lx\n", X509_issuer_name_hash(x));
 672             }
 673 #ifndef OPENSSL_NO_MD5
 674             else if (issuer_hash_old == i) {
 675                 BIO_printf(out, "%08lx\n", X509_issuer_name_hash_old(x));
 676             }
 677 #endif
 678             else if (pprint == i) {
 679                 X509_PURPOSE *ptmp;
 680                 int j;
 681                 BIO_printf(out, "Certificate purposes:\n");
 682                 for (j = 0; j < X509_PURPOSE_get_count(); j++) {
 683                     ptmp = X509_PURPOSE_get0(j);
 684                     purpose_print(out, x, ptmp);
 685                 }
 686             } else if (modulus == i) {
 687                 EVP_PKEY *pkey;
 688
 689                 pkey = X509_get0_pubkey(x);
 690                 if (pkey == NULL) {
 691                     BIO_printf(bio_err, "Modulus=unavailable\n");
 692                     ERR_print_errors(bio_err);
 693                     goto end;
 694                 }
 695                 BIO_printf(out, "Modulus=");
 696 #ifndef OPENSSL_NO_RSA
 697                 if (EVP_PKEY_id(pkey) == EVP_PKEY_RSA) {
 698                     const BIGNUM *n;
 699                     RSA_get0_key(EVP_PKEY_get0_RSA(pkey), &n, NULL, NULL);
 700                     BN_print(out, n);
 701                 } else
 702 #endif
 703 #ifndef OPENSSL_NO_DSA
 704                 if (EVP_PKEY_id(pkey) == EVP_PKEY_DSA) {
 705                     const BIGNUM *dsapub = NULL;
 706                     DSA_get0_key(EVP_PKEY_get0_DSA(pkey), &dsapub, NULL);
 707                     BN_print(out, dsapub);
 708                 } else
 709 #endif
 710                 {
 711                     BIO_printf(out, "Wrong Algorithm type");
 712                 }
 713                 BIO_printf(out, "\n");
 714             } else if (pubkey == i) {
 715                 EVP_PKEY *pkey;
 716
 717                 pkey = X509_get0_pubkey(x);
 718                 if (pkey == NULL) {
 719                     BIO_printf(bio_err, "Error getting public key\n");
 720                     ERR_print_errors(bio_err);
 721                     goto end;
 722                 }
 723                 PEM_write_bio_PUBKEY(out, pkey);
 724             } else if (C == i) {
 725                 unsigned char *d;
 726                 char *m;
 727                 int len;
 728
 729                 X509_NAME_oneline(X509_get_subject_name(x), buf, sizeof buf);
 730                 BIO_printf(out, "/*\n"
 731                                 " * Subject: %s\n", buf);
 732
 733                 X509_NAME_oneline(X509_get_issuer_name(x), buf, sizeof buf);
 734                 BIO_printf(out, " * Issuer:  %s\n"
 735                                 " */\n", buf);
 736
 737                 len = i2d_X509(x, NULL);
 738                 m = app_malloc(len, "x509 name buffer");
 739                 d = (unsigned char *)m;
 740                 len = i2d_X509_NAME(X509_get_subject_name(x), &d);
 741                 print_array(out, "the_subject_name", len, (unsigned char *)m);
 742                 d = (unsigned char *)m;
 743                 len = i2d_X509_PUBKEY(X509_get_X509_PUBKEY(x), &d);
 744                 print_array(out, "the_public_key", len, (unsigned char *)m);
 745                 d = (unsigned char *)m;
 746                 len = i2d_X509(x, &d);
 747                 print_array(out, "the_certificate", len, (unsigned char *)m);
 748                 OPENSSL_free(m);
 749             } else if (text == i) {
 750                 X509_print_ex(out, x, nmflag, certflag);
 751             } else if (startdate == i) {
 752                 BIO_puts(out, "notBefore=");
 753                 ASN1_TIME_print(out, X509_get0_notBefore(x));
 754                 BIO_puts(out, "\n");
 755             } else if (enddate == i) {
 756                 BIO_puts(out, "notAfter=");
 757                 ASN1_TIME_print(out, X509_get0_notAfter(x));
 758                 BIO_puts(out, "\n");
 759             } else if (fingerprint == i) {
 760                 int j;
 761                 unsigned int n;
 762                 unsigned char md[EVP_MAX_MD_SIZE];
 763                 const EVP_MD *fdig = digest;
 764
 765                 if (!fdig)
 766                     fdig = EVP_sha1();
 767
 768                 if (!X509_digest(x, fdig, md, &n)) {
 769                     BIO_printf(bio_err, "out of memory\n");
 770                     goto end;
 771                 }
 772                 BIO_printf(out, "%s Fingerprint=",
 773                            OBJ_nid2sn(EVP_MD_type(fdig)));
 774                 for (j = 0; j < (int)n; j++) {
 775                     BIO_printf(out, "%02X%c", md[j], (j + 1 == (int)n)
 776                                ? '\n' : ':');
 777                 }
 778             }
 779
 780             /* should be in the library */
 781             else if ((sign_flag == i) && (x509req == 0)) {
 782                 BIO_printf(bio_err, "Getting Private key\n");
 783                 if (Upkey == NULL) {
 784                     Upkey = load_key(keyfile, keyformat, 0,
 785                                      passin, e, "Private key");
 786                     if (Upkey == NULL)
 787                         goto end;
 788                 }
 789
 790                 assert(need_rand);
 791                 if (!sign(x, Upkey, days, clrext, digest, extconf, extsect))
 792                     goto end;
 793             } else if (CA_flag == i) {
 794                 BIO_printf(bio_err, "Getting CA Private Key\n");
 795                 if (CAkeyfile != NULL) {
 796                     CApkey = load_key(CAkeyfile, CAkeyformat,
 797                                       0, passin, e, "CA Private Key");
 798                     if (CApkey == NULL)
 799                         goto end;
 800                 }
 801
 802                 assert(need_rand);
 803                 if (!x509_certify(ctx, CAfile, digest, x, xca,
 804                                   CApkey, sigopts,
 805                                   CAserial, CA_createserial, days, clrext,
 806                                   extconf, extsect, sno, reqfile))
 807                     goto end;
 808             } else if (x509req == i) {
 809                 EVP_PKEY *pk;
 810
 811                 BIO_printf(bio_err, "Getting request Private Key\n");
 812                 if (keyfile == NULL) {
 813                     BIO_printf(bio_err, "no request key file specified\n");
 814                     goto end;
 815                 } else {
 816                     pk = load_key(keyfile, keyformat, 0,
 817                                   passin, e, "request key");
 818                     if (pk == NULL)
 819                         goto end;
 820                 }
 821
 822                 BIO_printf(bio_err, "Generating certificate request\n");
 823
 824                 rq = X509_to_X509_REQ(x, pk, digest);
 825                 EVP_PKEY_free(pk);
 826                 if (rq == NULL) {
 827                     ERR_print_errors(bio_err);
 828                     goto end;
 829                 }
 830                 if (!noout) {
 831                     X509_REQ_print(out, rq);
 832                     PEM_write_bio_X509_REQ(out, rq);
 833                 }
 834                 noout = 1;
 835             } else if (ocspid == i) {
 836                 X509_ocspid_print(out, x);
 837             }
 838         }
 839     }
 840
 841     if (checkend) {
 842         time_t tcheck = time(NULL) + checkoffset;
 843
 844         if (X509_cmp_time(X509_get0_notAfter(x), &tcheck) < 0) {
 845             BIO_printf(out, "Certificate will expire\n");
 846             ret = 1;
 847         } else {
 848             BIO_printf(out, "Certificate will not expire\n");
 849             ret = 0;
 850         }
 851         goto end;
 852     }
 853
 854     print_cert_checks(out, x, checkhost, checkemail, checkip);
 855
 856     if (noout || nocert) {
 857         ret = 0;
 858         goto end;
 859     }
 860
 861     if (outformat == FORMAT_ASN1)
 862         i = i2d_X509_bio(out, x);
 863     else if (outformat == FORMAT_PEM) {
 864         if (trustout)
 865             i = PEM_write_bio_X509_AUX(out, x);
 866         else
 867             i = PEM_write_bio_X509(out, x);
 868     } else {
 869         BIO_printf(bio_err, "bad output format specified for outfile\n");
 870         goto end;
 871     }
 872     if (!i) {
 873         BIO_printf(bio_err, "unable to write certificate\n");
 874         ERR_print_errors(bio_err);
 875         goto end;
 876     }
 877     ret = 0;
 878  end:
 879     if (need_rand)
 880         app_RAND_write_file(NULL);
 881     NCONF_free(extconf);
 882     BIO_free_all(out);
 883     X509_STORE_free(ctx);
 884     X509_REQ_free(req);
 885     X509_free(x);
 886     X509_free(xca);
 887     EVP_PKEY_free(Upkey);
 888     EVP_PKEY_free(CApkey);
 889     EVP_PKEY_free(fkey);
 890     sk_OPENSSL_STRING_free(sigopts);
 891     X509_REQ_free(rq);
 892     ASN1_INTEGER_free(sno);
 893     sk_ASN1_OBJECT_pop_free(trust, ASN1_OBJECT_free);
 894     sk_ASN1_OBJECT_pop_free(reject, ASN1_OBJECT_free);
 895     ASN1_OBJECT_free(objtmp);
 896     OPENSSL_free(passin);
 897     return (ret);
 898 }
 899
 900 static ASN1_INTEGER *x509_load_serial(const char *CAfile, const char *serialfile,
 901                                       int create)
 902 {
 903     char *buf = NULL, *p;
 904     ASN1_INTEGER *bs = NULL;
 905     BIGNUM *serial = NULL;
 906     size_t len;
 907
 908     len = ((serialfile == NULL)
 909            ? (strlen(CAfile) + strlen(POSTFIX) + 1)
 910            : (strlen(serialfile))) + 1;
 911     buf = app_malloc(len, "serial# buffer");
 912     if (serialfile == NULL) {
 913         OPENSSL_strlcpy(buf, CAfile, len);
 914         for (p = buf; *p; p++)
 915             if (*p == '.') {
 916                 *p = '\0';
 917                 break;
 918             }
 919         OPENSSL_strlcat(buf, POSTFIX, len);
 920     } else
 921         OPENSSL_strlcpy(buf, serialfile, len);
 922
 923     serial = load_serial(buf, create, NULL);
 924     if (serial == NULL)
 925         goto end;
 926
 927     if (!BN_add_word(serial, 1)) {
 928         BIO_printf(bio_err, "add_word failure\n");
 929         goto end;
 930     }
 931
 932     if (!save_serial(buf, NULL, serial, &bs))
 933         goto end;
 934
 935  end:
 936     OPENSSL_free(buf);
 937     BN_free(serial);
 938     return bs;
 939 }
 940
 941 static int x509_certify(X509_STORE *ctx, const char *CAfile, const EVP_MD *digest,
 942                         X509 *x, X509 *xca, EVP_PKEY *pkey,
 943                         STACK_OF(OPENSSL_STRING) *sigopts,
 944                         const char *serialfile, int create,
 945                         int days, int clrext, CONF *conf, const char *section,
 946                         ASN1_INTEGER *sno, int reqfile)
 947 {
 948     int ret = 0;
 949     ASN1_INTEGER *bs = NULL;
 950     X509_STORE_CTX *xsc = NULL;
 951     EVP_PKEY *upkey;
 952
 953     upkey = X509_get0_pubkey(xca);
 954     if (upkey == NULL) {
 955         BIO_printf(bio_err, "Error obtaining CA X509 public key\n");
 956         goto end;
 957     }
 958     EVP_PKEY_copy_parameters(upkey, pkey);
 959
 960     xsc = X509_STORE_CTX_new();
 961     if (xsc == NULL || !X509_STORE_CTX_init(xsc, ctx, x, NULL)) {
 962         BIO_printf(bio_err, "Error initialising X509 store\n");
 963         goto end;
 964     }
 965     if (sno)
 966         bs = sno;
 967     else if ((bs = x509_load_serial(CAfile, serialfile, create)) == NULL)
 968         goto end;
 969
 970     /*
 971      * NOTE: this certificate can/should be self signed, unless it was a
 972      * certificate request in which case it is not.
 973      */
 974     X509_STORE_CTX_set_cert(xsc, x);
 975     X509_STORE_CTX_set_flags(xsc, X509_V_FLAG_CHECK_SS_SIGNATURE);
 976     if (!reqfile && X509_verify_cert(xsc) <= 0)
 977         goto end;
 978
 979     if (!X509_check_private_key(xca, pkey)) {
 980         BIO_printf(bio_err,
 981                    "CA certificate and CA private key do not match\n");
 982         goto end;
 983     }
 984
 985     if (!X509_set_issuer_name(x, X509_get_subject_name(xca)))
 986         goto end;
 987     if (!X509_set_serialNumber(x, bs))
 988         goto end;
 989
 990     if (!set_cert_times(x, NULL, NULL, days))
 991         goto end;
 992
 993     if (clrext) {
 994         while (X509_get_ext_count(x) > 0)
 995             X509_delete_ext(x, 0);
 996     }
 997
 998     if (conf) {
 999         X509V3_CTX ctx2;
1000         X509_set_version(x, 2); /* version 3 certificate */
1001         X509V3_set_ctx(&ctx2, xca, x, NULL, NULL, 0);
1002         X509V3_set_nconf(&ctx2, conf);
1003         if (!X509V3_EXT_add_nconf(conf, &ctx2, section, x))
1004             goto end;
1005     }
1006
1007     if (!do_X509_sign(x, pkey, digest, sigopts))
1008         goto end;
1009     ret = 1;
1010  end:
1011     X509_STORE_CTX_free(xsc);
1012     if (!ret)
1013         ERR_print_errors(bio_err);
1014     if (!sno)
1015         ASN1_INTEGER_free(bs);
1016     return ret;
1017 }
1018
1019 static int callb(int ok, X509_STORE_CTX *ctx)
1020 {
1021     int err;
1022     X509 *err_cert;
1023
1024     /*
1025      * it is ok to use a self signed certificate This case will catch both
1026      * the initial ok == 0 and the final ok == 1 calls to this function
1027      */
1028     err = X509_STORE_CTX_get_error(ctx);
1029     if (err == X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT)
1030         return 1;
1031
1032     /*
1033      * BAD we should have gotten an error.  Normally if everything worked
1034      * X509_STORE_CTX_get_error(ctx) will still be set to
1035      * DEPTH_ZERO_SELF_....
1036      */
1037     if (ok) {
1038         BIO_printf(bio_err,
1039                    "error with certificate to be certified - should be self signed\n");
1040         return 0;
1041     } else {
1042         err_cert = X509_STORE_CTX_get_current_cert(ctx);
1043         print_name(bio_err, NULL, X509_get_subject_name(err_cert), 0);
1044         BIO_printf(bio_err,
1045                    "error with certificate - error %d at depth %d\n%s\n", err,
1046                    X509_STORE_CTX_get_error_depth(ctx),
1047                    X509_verify_cert_error_string(err));
1048         return 1;
1049     }
1050 }
1051
1052 /* self sign */
1053 static int sign(X509 *x, EVP_PKEY *pkey, int days, int clrext,
1054                 const EVP_MD *digest, CONF *conf, const char *section)
1055 {
1056
1057     if (!X509_set_issuer_name(x, X509_get_subject_name(x)))
1058         goto err;
1059     if (!set_cert_times(x, NULL, NULL, days))
1060         goto err;
1061     if (!X509_set_pubkey(x, pkey))
1062         goto err;
1063     if (clrext) {
1064         while (X509_get_ext_count(x) > 0)
1065             X509_delete_ext(x, 0);
1066     }
1067     if (conf) {
1068         X509V3_CTX ctx;
1069         X509_set_version(x, 2); /* version 3 certificate */
1070         X509V3_set_ctx(&ctx, x, x, NULL, NULL, 0);
1071         X509V3_set_nconf(&ctx, conf);
1072         if (!X509V3_EXT_add_nconf(conf, &ctx, section, x))
1073             goto err;
1074     }
1075     if (!X509_sign(x, pkey, digest))
1076         goto err;
1077     return 1;
1078  err:
1079     ERR_print_errors(bio_err);
1080     return 0;
1081 }
1082
1083 static int purpose_print(BIO *bio, X509 *cert, X509_PURPOSE *pt)
1084 {
1085     int id, i, idret;
1086     const char *pname;
1087     id = X509_PURPOSE_get_id(pt);
1088     pname = X509_PURPOSE_get0_name(pt);
1089     for (i = 0; i < 2; i++) {
1090         idret = X509_check_purpose(cert, id, i);
1091         BIO_printf(bio, "%s%s : ", pname, i ? " CA" : "");
1092         if (idret == 1)
1093             BIO_printf(bio, "Yes\n");
1094         else if (idret == 0)
1095             BIO_printf(bio, "No\n");
1096         else
1097             BIO_printf(bio, "Yes (WARNING code=%d)\n", idret);
1098     }
1099     return 1;
1100 }