apps/x509.c

   1 /*
   2  * Copyright 1995-2017 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                 int preserve_dates);
  38 static int x509_certify(X509_STORE *ctx, const char *CAfile, const EVP_MD *digest,
  39                         X509 *x, X509 *xca, EVP_PKEY *pkey,
  40                         STACK_OF(OPENSSL_STRING) *sigopts, const char *serialfile,
  41                         int create, int days, int clrext, CONF *conf,
  42                         const char *section, ASN1_INTEGER *sno, int reqfile,
  43                         int preserve_dates);
  44 static int purpose_print(BIO *bio, X509 *cert, X509_PURPOSE *pt);
  45
  46 typedef enum OPTION_choice {
  47     OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
  48     OPT_INFORM, OPT_OUTFORM, OPT_KEYFORM, OPT_REQ, OPT_CAFORM,
  49     OPT_CAKEYFORM, OPT_SIGOPT, OPT_DAYS, OPT_PASSIN, OPT_EXTFILE,
  50     OPT_EXTENSIONS, OPT_IN, OPT_OUT, OPT_SIGNKEY, OPT_CA,
  51     OPT_CAKEY, OPT_CASERIAL, OPT_SET_SERIAL, OPT_FORCE_PUBKEY,
  52     OPT_ADDTRUST, OPT_ADDREJECT, OPT_SETALIAS, OPT_CERTOPT, OPT_NAMEOPT,
  53     OPT_C, OPT_EMAIL, OPT_OCSP_URI, OPT_SERIAL, OPT_NEXT_SERIAL,
  54     OPT_MODULUS, OPT_PUBKEY, OPT_X509TOREQ, OPT_TEXT, OPT_HASH,
  55     OPT_ISSUER_HASH, OPT_SUBJECT, OPT_ISSUER, OPT_FINGERPRINT, OPT_DATES,
  56     OPT_PURPOSE, OPT_STARTDATE, OPT_ENDDATE, OPT_CHECKEND, OPT_CHECKHOST,
  57     OPT_CHECKEMAIL, OPT_CHECKIP, OPT_NOOUT, OPT_TRUSTOUT, OPT_CLRTRUST,
  58     OPT_CLRREJECT, OPT_ALIAS, OPT_CACREATESERIAL, OPT_CLREXT, OPT_OCSPID,
  59     OPT_SUBJECT_HASH_OLD,
  60     OPT_ISSUER_HASH_OLD,
  61     OPT_BADSIG, OPT_MD, OPT_ENGINE, OPT_NOCERT, OPT_PRESERVE_DATES,
  62     OPT_R_ENUM
  63 } OPTION_CHOICE;
  64
  65 const OPTIONS x509_options[] = {
  66     {"help", OPT_HELP, '-', "Display this summary"},
  67     {"inform", OPT_INFORM, 'f',
  68      "Input format - default PEM (one of DER, NET or PEM)"},
  69     {"in", OPT_IN, '<', "Input file - default stdin"},
  70     {"outform", OPT_OUTFORM, 'f',
  71      "Output format - default PEM (one of DER, NET or PEM)"},
  72     {"out", OPT_OUT, '>', "Output file - default stdout"},
  73     {"keyform", OPT_KEYFORM, 'F', "Private key format - default PEM"},
  74     {"passin", OPT_PASSIN, 's', "Private key password/pass-phrase source"},
  75     {"serial", OPT_SERIAL, '-', "Print serial number value"},
  76     {"subject_hash", OPT_HASH, '-', "Print subject hash value"},
  77     {"issuer_hash", OPT_ISSUER_HASH, '-', "Print issuer hash value"},
  78     {"hash", OPT_HASH, '-', "Synonym for -subject_hash"},
  79     {"subject", OPT_SUBJECT, '-', "Print subject DN"},
  80     {"issuer", OPT_ISSUER, '-', "Print issuer DN"},
  81     {"email", OPT_EMAIL, '-', "Print email address(es)"},
  82     {"startdate", OPT_STARTDATE, '-', "Set notBefore field"},
  83     {"enddate", OPT_ENDDATE, '-', "Set notAfter field"},
  84     {"purpose", OPT_PURPOSE, '-', "Print out certificate purposes"},
  85     {"dates", OPT_DATES, '-', "Both Before and After dates"},
  86     {"modulus", OPT_MODULUS, '-', "Print the RSA key modulus"},
  87     {"pubkey", OPT_PUBKEY, '-', "Output the public key"},
  88     {"fingerprint", OPT_FINGERPRINT, '-',
  89      "Print the certificate fingerprint"},
  90     {"alias", OPT_ALIAS, '-', "Output certificate alias"},
  91     {"noout", OPT_NOOUT, '-', "No output, just status"},
  92     {"nocert", OPT_NOCERT, '-', "No certificate output"},
  93     {"ocspid", OPT_OCSPID, '-',
  94      "Print OCSP hash values for the subject name and public key"},
  95     {"ocsp_uri", OPT_OCSP_URI, '-', "Print OCSP Responder URL(s)"},
  96     {"trustout", OPT_TRUSTOUT, '-', "Output a trusted certificate"},
  97     {"clrtrust", OPT_CLRTRUST, '-', "Clear all trusted purposes"},
  98     {"clrext", OPT_CLREXT, '-', "Clear all certificate extensions"},
  99     {"addtrust", OPT_ADDTRUST, 's', "Trust certificate for a given purpose"},
 100     {"addreject", OPT_ADDREJECT, 's',
 101      "Reject certificate for a given purpose"},
 102     {"setalias", OPT_SETALIAS, 's', "Set certificate alias"},
 103     {"days", OPT_DAYS, 'n',
 104      "How long till expiry of a signed certificate - def 30 days"},
 105     {"checkend", OPT_CHECKEND, 'M',
 106      "Check whether the cert expires in the next arg seconds"},
 107     {OPT_MORE_STR, 1, 1, "Exit 1 if so, 0 if not"},
 108     {"signkey", OPT_SIGNKEY, '<', "Self sign cert with arg"},
 109     {"x509toreq", OPT_X509TOREQ, '-',
 110      "Output a certification request object"},
 111     {"req", OPT_REQ, '-', "Input is a certificate request, sign and output"},
 112     {"CA", OPT_CA, '<', "Set the CA certificate, must be PEM format"},
 113     {"CAkey", OPT_CAKEY, 's',
 114      "The CA key, must be PEM format; if not in CAfile"},
 115     {"CAcreateserial", OPT_CACREATESERIAL, '-',
 116      "Create serial number file if it does not exist"},
 117     {"CAserial", OPT_CASERIAL, 's', "Serial file"},
 118     {"set_serial", OPT_SET_SERIAL, 's', "Serial number to use"},
 119     {"text", OPT_TEXT, '-', "Print the certificate in text form"},
 120     {"C", OPT_C, '-', "Print out C code forms"},
 121     {"extfile", OPT_EXTFILE, '<', "File with X509V3 extensions to add"},
 122     OPT_R_OPTIONS,
 123     {"extensions", OPT_EXTENSIONS, 's', "Section from config file to use"},
 124     {"nameopt", OPT_NAMEOPT, 's', "Various certificate name options"},
 125     {"certopt", OPT_CERTOPT, 's', "Various certificate text options"},
 126     {"checkhost", OPT_CHECKHOST, 's', "Check certificate matches host"},
 127     {"checkemail", OPT_CHECKEMAIL, 's', "Check certificate matches email"},
 128     {"checkip", OPT_CHECKIP, 's', "Check certificate matches ipaddr"},
 129     {"CAform", OPT_CAFORM, 'F', "CA format - default PEM"},
 130     {"CAkeyform", OPT_CAKEYFORM, 'F', "CA key format - default PEM"},
 131     {"sigopt", OPT_SIGOPT, 's', "Signature parameter in n:v form"},
 132     {"force_pubkey", OPT_FORCE_PUBKEY, '<', "Force the Key to put inside certificate"},
 133     {"next_serial", OPT_NEXT_SERIAL, '-', "Increment current certificate serial number"},
 134     {"clrreject", OPT_CLRREJECT, '-',
 135      "Clears all the prohibited or rejected uses of the certificate"},
 136     {"badsig", OPT_BADSIG, '-', "Corrupt last byte of certificate signature (for test)"},
 137     {"", OPT_MD, '-', "Any supported digest"},
 138 #ifndef OPENSSL_NO_MD5
 139     {"subject_hash_old", OPT_SUBJECT_HASH_OLD, '-',
 140      "Print old-style (MD5) issuer hash value"},
 141     {"issuer_hash_old", OPT_ISSUER_HASH_OLD, '-',
 142      "Print old-style (MD5) subject hash value"},
 143 #endif
 144 #ifndef OPENSSL_NO_ENGINE
 145     {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
 146 #endif
 147     {"preserve_dates", OPT_PRESERVE_DATES, '-', "preserve existing dates when signing"},
 148     {NULL}
 149 };
 150
 151 int x509_main(int argc, char **argv)
 152 {
 153     ASN1_INTEGER *sno = NULL;
 154     ASN1_OBJECT *objtmp = NULL;
 155     BIO *out = NULL;
 156     CONF *extconf = NULL;
 157     EVP_PKEY *Upkey = NULL, *CApkey = NULL, *fkey = NULL;
 158     STACK_OF(ASN1_OBJECT) *trust = NULL, *reject = NULL;
 159     STACK_OF(OPENSSL_STRING) *sigopts = NULL;
 160     X509 *x = NULL, *xca = NULL;
 161     X509_REQ *req = NULL, *rq = NULL;
 162     X509_STORE *ctx = NULL;
 163     const EVP_MD *digest = NULL;
 164     char *CAkeyfile = NULL, *CAserial = NULL, *fkeyfile = NULL, *alias = NULL;
 165     char *checkhost = NULL, *checkemail = NULL, *checkip = NULL;
 166     char *extsect = NULL, *extfile = NULL, *passin = NULL, *passinarg = NULL;
 167     char *infile = NULL, *outfile = NULL, *keyfile = NULL, *CAfile = NULL;
 168     char *prog;
 169     int x509req = 0, days = DEF_DAYS, modulus = 0, pubkey = 0, pprint = 0;
 170     int C = 0, CAformat = FORMAT_PEM, CAkeyformat = FORMAT_PEM;
 171     int fingerprint = 0, reqfile = 0, checkend = 0;
 172     int informat = FORMAT_PEM, outformat = FORMAT_PEM, keyformat = FORMAT_PEM;
 173     int next_serial = 0, subject_hash = 0, issuer_hash = 0, ocspid = 0;
 174     int noout = 0, sign_flag = 0, CA_flag = 0, CA_createserial = 0, email = 0;
 175     int ocsp_uri = 0, trustout = 0, clrtrust = 0, clrreject = 0, aliasout = 0;
 176     int ret = 1, i, num = 0, badsig = 0, clrext = 0, nocert = 0;
 177     int text = 0, serial = 0, subject = 0, issuer = 0, startdate = 0;
 178     int enddate = 0;
 179     time_t checkoffset = 0;
 180     unsigned long certflag = 0;
 181     int preserve_dates = 0;
 182     OPTION_CHOICE o;
 183     ENGINE *e = NULL;
 184 #ifndef OPENSSL_NO_MD5
 185     int subject_hash_old = 0, issuer_hash_old = 0;
 186 #endif
 187
 188     ctx = X509_STORE_new();
 189     if (ctx == NULL)
 190         goto end;
 191     X509_STORE_set_verify_cb(ctx, callb);
 192
 193     prog = opt_init(argc, argv, x509_options);
 194     while ((o = opt_next()) != OPT_EOF) {
 195         switch (o) {
 196         case OPT_EOF:
 197         case OPT_ERR:
 198  opthelp:
 199             BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
 200             goto end;
 201         case OPT_HELP:
 202             opt_help(x509_options);
 203             ret = 0;
 204             goto end;
 205         case OPT_INFORM:
 206             if (!opt_format(opt_arg(), OPT_FMT_ANY, &informat))
 207                 goto opthelp;
 208             break;
 209         case OPT_IN:
 210             infile = opt_arg();
 211             break;
 212         case OPT_OUTFORM:
 213             if (!opt_format(opt_arg(), OPT_FMT_ANY, &outformat))
 214                 goto opthelp;
 215             break;
 216         case OPT_KEYFORM:
 217             if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &keyformat))
 218                 goto opthelp;
 219             break;
 220         case OPT_CAFORM:
 221             if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &CAformat))
 222                 goto opthelp;
 223             break;
 224         case OPT_CAKEYFORM:
 225             if (!opt_format(opt_arg(), OPT_FMT_ANY, &CAkeyformat))
 226                 goto opthelp;
 227             break;
 228         case OPT_OUT:
 229             outfile = opt_arg();
 230             break;
 231         case OPT_REQ:
 232             reqfile = 1;
 233             break;
 234
 235         case OPT_SIGOPT:
 236             if (!sigopts)
 237                 sigopts = sk_OPENSSL_STRING_new_null();
 238             if (!sigopts || !sk_OPENSSL_STRING_push(sigopts, opt_arg()))
 239                 goto opthelp;
 240             break;
 241         case OPT_DAYS:
 242             if (preserve_dates)
 243                 goto opthelp;
 244             days = atoi(opt_arg());
 245             break;
 246         case OPT_PASSIN:
 247             passinarg = opt_arg();
 248             break;
 249         case OPT_EXTFILE:
 250             extfile = opt_arg();
 251             break;
 252         case OPT_R_CASES:
 253             if (!opt_rand(o))
 254                 goto end;
 255             break;
 256         case OPT_EXTENSIONS:
 257             extsect = opt_arg();
 258             break;
 259         case OPT_SIGNKEY:
 260             keyfile = opt_arg();
 261             sign_flag = ++num;
 262             break;
 263         case OPT_CA:
 264             CAfile = opt_arg();
 265             CA_flag = ++num;
 266             break;
 267         case OPT_CAKEY:
 268             CAkeyfile = opt_arg();
 269             break;
 270         case OPT_CASERIAL:
 271             CAserial = opt_arg();
 272             break;
 273         case OPT_SET_SERIAL:
 274             if (sno != NULL) {
 275                 BIO_printf(bio_err, "Serial number supplied twice\n");
 276                 goto opthelp;
 277             }
 278             if ((sno = s2i_ASN1_INTEGER(NULL, opt_arg())) == NULL)
 279                 goto opthelp;
 280             break;
 281         case OPT_FORCE_PUBKEY:
 282             fkeyfile = opt_arg();
 283             break;
 284         case OPT_ADDTRUST:
 285             if ((objtmp = OBJ_txt2obj(opt_arg(), 0)) == NULL) {
 286                 BIO_printf(bio_err,
 287                            "%s: Invalid trust object value %s\n",
 288                            prog, opt_arg());
 289                 goto opthelp;
 290             }
 291             if (trust == NULL && (trust = sk_ASN1_OBJECT_new_null()) == NULL)
 292                 goto end;
 293             sk_ASN1_OBJECT_push(trust, objtmp);
 294             objtmp = NULL;
 295             trustout = 1;
 296             break;
 297         case OPT_ADDREJECT:
 298             if ((objtmp = OBJ_txt2obj(opt_arg(), 0)) == NULL) {
 299                 BIO_printf(bio_err,
 300                            "%s: Invalid reject object value %s\n",
 301                            prog, opt_arg());
 302                 goto opthelp;
 303             }
 304             if (reject == NULL
 305                 && (reject = sk_ASN1_OBJECT_new_null()) == NULL)
 306                 goto end;
 307             sk_ASN1_OBJECT_push(reject, objtmp);
 308             objtmp = NULL;
 309             trustout = 1;
 310             break;
 311         case OPT_SETALIAS:
 312             alias = opt_arg();
 313             trustout = 1;
 314             break;
 315         case OPT_CERTOPT:
 316             if (!set_cert_ex(&certflag, opt_arg()))
 317                 goto opthelp;
 318             break;
 319         case OPT_NAMEOPT:
 320             if (!set_nameopt(opt_arg()))
 321                 goto opthelp;
 322             break;
 323         case OPT_ENGINE:
 324             e = setup_engine(opt_arg(), 0);
 325             break;
 326         case OPT_C:
 327             C = ++num;
 328             break;
 329         case OPT_EMAIL:
 330             email = ++num;
 331             break;
 332         case OPT_OCSP_URI:
 333             ocsp_uri = ++num;
 334             break;
 335         case OPT_SERIAL:
 336             serial = ++num;
 337             break;
 338         case OPT_NEXT_SERIAL:
 339             next_serial = ++num;
 340             break;
 341         case OPT_MODULUS:
 342             modulus = ++num;
 343             break;
 344         case OPT_PUBKEY:
 345             pubkey = ++num;
 346             break;
 347         case OPT_X509TOREQ:
 348             x509req = ++num;
 349             break;
 350         case OPT_TEXT:
 351             text = ++num;
 352             break;
 353         case OPT_SUBJECT:
 354             subject = ++num;
 355             break;
 356         case OPT_ISSUER:
 357             issuer = ++num;
 358             break;
 359         case OPT_FINGERPRINT:
 360             fingerprint = ++num;
 361             break;
 362         case OPT_HASH:
 363             subject_hash = ++num;
 364             break;
 365         case OPT_ISSUER_HASH:
 366             issuer_hash = ++num;
 367             break;
 368         case OPT_PURPOSE:
 369             pprint = ++num;
 370             break;
 371         case OPT_STARTDATE:
 372             startdate = ++num;
 373             break;
 374         case OPT_ENDDATE:
 375             enddate = ++num;
 376             break;
 377         case OPT_NOOUT:
 378             noout = ++num;
 379             break;
 380         case OPT_NOCERT:
 381             nocert = 1;
 382             break;
 383         case OPT_TRUSTOUT:
 384             trustout = 1;
 385             break;
 386         case OPT_CLRTRUST:
 387             clrtrust = ++num;
 388             break;
 389         case OPT_CLRREJECT:
 390             clrreject = ++num;
 391             break;
 392         case OPT_ALIAS:
 393             aliasout = ++num;
 394             break;
 395         case OPT_CACREATESERIAL:
 396             CA_createserial = ++num;
 397             break;
 398         case OPT_CLREXT:
 399             clrext = 1;
 400             break;
 401         case OPT_OCSPID:
 402             ocspid = ++num;
 403             break;
 404         case OPT_BADSIG:
 405             badsig = 1;
 406             break;
 407 #ifndef OPENSSL_NO_MD5
 408         case OPT_SUBJECT_HASH_OLD:
 409             subject_hash_old = ++num;
 410             break;
 411         case OPT_ISSUER_HASH_OLD:
 412             issuer_hash_old = ++num;
 413             break;
 414 #else
 415         case OPT_SUBJECT_HASH_OLD:
 416         case OPT_ISSUER_HASH_OLD:
 417             break;
 418 #endif
 419         case OPT_DATES:
 420             startdate = ++num;
 421             enddate = ++num;
 422             break;
 423         case OPT_CHECKEND:
 424             checkend = 1;
 425             {
 426                 intmax_t temp = 0;
 427                 if (!opt_imax(opt_arg(), &temp))
 428                     goto opthelp;
 429                 checkoffset = (time_t)temp;
 430                 if ((intmax_t)checkoffset != temp) {
 431                     BIO_printf(bio_err, "%s: checkend time out of range %s\n",
 432                                prog, opt_arg());
 433                     goto opthelp;
 434                 }
 435             }
 436             break;
 437         case OPT_CHECKHOST:
 438             checkhost = opt_arg();
 439             break;
 440         case OPT_CHECKEMAIL:
 441             checkemail = opt_arg();
 442             break;
 443         case OPT_CHECKIP:
 444             checkip = opt_arg();
 445             break;
 446         case OPT_PRESERVE_DATES:
 447             if (days != DEF_DAYS)
 448                 goto opthelp;
 449             preserve_dates = 1;
 450             break;
 451         case OPT_MD:
 452             if (!opt_md(opt_unknown(), &digest))
 453                 goto opthelp;
 454         }
 455     }
 456     argc = opt_num_rest();
 457     argv = opt_rest();
 458     if (argc != 0) {
 459         BIO_printf(bio_err, "%s: Unknown parameter %s\n", prog, argv[0]);
 460         goto opthelp;
 461     }
 462
 463     out = bio_open_default(outfile, 'w', outformat);
 464     if (out == NULL)
 465         goto end;
 466
 467     if (!app_passwd(passinarg, NULL, &passin, NULL)) {
 468         BIO_printf(bio_err, "Error getting password\n");
 469         goto end;
 470     }
 471
 472     if (!X509_STORE_set_default_paths(ctx)) {
 473         ERR_print_errors(bio_err);
 474         goto end;
 475     }
 476
 477     if (fkeyfile != NULL) {
 478         fkey = load_pubkey(fkeyfile, keyformat, 0, NULL, e, "Forced key");
 479         if (fkey == NULL)
 480             goto end;
 481     }
 482
 483     if ((CAkeyfile == NULL) && (CA_flag) && (CAformat == FORMAT_PEM)) {
 484         CAkeyfile = CAfile;
 485     } else if ((CA_flag) && (CAkeyfile == NULL)) {
 486         BIO_printf(bio_err,
 487                    "need to specify a CAkey if using the CA command\n");
 488         goto end;
 489     }
 490
 491     if (extfile != NULL) {
 492         X509V3_CTX ctx2;
 493         if ((extconf = app_load_config(extfile)) == NULL)
 494             goto end;
 495         if (extsect == NULL) {
 496             extsect = NCONF_get_string(extconf, "default", "extensions");
 497             if (extsect == NULL) {
 498                 ERR_clear_error();
 499                 extsect = "default";
 500             }
 501         }
 502         X509V3_set_ctx_test(&ctx2);
 503         X509V3_set_nconf(&ctx2, extconf);
 504         if (!X509V3_EXT_add_nconf(extconf, &ctx2, extsect, NULL)) {
 505             BIO_printf(bio_err,
 506                        "Error Loading extension section %s\n", extsect);
 507             ERR_print_errors(bio_err);
 508             goto end;
 509         }
 510     }
 511
 512     if (reqfile) {
 513         EVP_PKEY *pkey;
 514         BIO *in;
 515
 516         if (!sign_flag && !CA_flag) {
 517             BIO_printf(bio_err, "We need a private key to sign with\n");
 518             goto end;
 519         }
 520         in = bio_open_default(infile, 'r', informat);
 521         if (in == NULL)
 522             goto end;
 523         req = PEM_read_bio_X509_REQ(in, NULL, NULL, NULL);
 524         BIO_free(in);
 525
 526         if (req == NULL) {
 527             ERR_print_errors(bio_err);
 528             goto end;
 529         }
 530
 531         if ((pkey = X509_REQ_get0_pubkey(req)) == NULL) {
 532             BIO_printf(bio_err, "error unpacking public key\n");
 533             goto end;
 534         }
 535         i = X509_REQ_verify(req, pkey);
 536         if (i < 0) {
 537             BIO_printf(bio_err, "Signature verification error\n");
 538             ERR_print_errors(bio_err);
 539             goto end;
 540         }
 541         if (i == 0) {
 542             BIO_printf(bio_err,
 543                        "Signature did not match the certificate request\n");
 544             goto end;
 545         } else {
 546             BIO_printf(bio_err, "Signature ok\n");
 547         }
 548
 549         print_name(bio_err, "subject=", X509_REQ_get_subject_name(req),
 550                    get_nameopt());
 551
 552         if ((x = X509_new()) == NULL)
 553             goto end;
 554
 555         if (sno == NULL) {
 556             sno = ASN1_INTEGER_new();
 557             if (sno == NULL || !rand_serial(NULL, sno))
 558                 goto end;
 559             if (!X509_set_serialNumber(x, sno))
 560                 goto end;
 561             ASN1_INTEGER_free(sno);
 562             sno = NULL;
 563         } else if (!X509_set_serialNumber(x, sno)) {
 564             goto end;
 565         }
 566
 567         if (!X509_set_issuer_name(x, X509_REQ_get_subject_name(req)))
 568             goto end;
 569         if (!X509_set_subject_name(x, X509_REQ_get_subject_name(req)))
 570             goto end;
 571         if (!set_cert_times(x, NULL, NULL, days))
 572             goto end;
 573
 574         if (fkey != NULL) {
 575             X509_set_pubkey(x, fkey);
 576         } else {
 577             pkey = X509_REQ_get0_pubkey(req);
 578             X509_set_pubkey(x, pkey);
 579         }
 580     } else {
 581         x = load_cert(infile, informat, "Certificate");
 582     }
 583
 584     if (x == NULL)
 585         goto end;
 586     if (CA_flag) {
 587         xca = load_cert(CAfile, CAformat, "CA Certificate");
 588         if (xca == NULL)
 589             goto end;
 590     }
 591
 592     if (!noout || text || next_serial) {
 593         OBJ_create("2.99999.3", "SET.ex3", "SET x509v3 extension 3");
 594
 595     }
 596
 597     if (alias)
 598         X509_alias_set1(x, (unsigned char *)alias, -1);
 599
 600     if (clrtrust)
 601         X509_trust_clear(x);
 602     if (clrreject)
 603         X509_reject_clear(x);
 604
 605     if (trust != NULL) {
 606         for (i = 0; i < sk_ASN1_OBJECT_num(trust); i++) {
 607             objtmp = sk_ASN1_OBJECT_value(trust, i);
 608             X509_add1_trust_object(x, objtmp);
 609         }
 610         objtmp = NULL;
 611     }
 612
 613     if (reject != NULL) {
 614         for (i = 0; i < sk_ASN1_OBJECT_num(reject); i++) {
 615             objtmp = sk_ASN1_OBJECT_value(reject, i);
 616             X509_add1_reject_object(x, objtmp);
 617         }
 618         objtmp = NULL;
 619     }
 620
 621     if (badsig) {
 622         const ASN1_BIT_STRING *signature;
 623
 624         X509_get0_signature(&signature, NULL, x);
 625         corrupt_signature(signature);
 626     }
 627
 628     if (num) {
 629         for (i = 1; i <= num; i++) {
 630             if (issuer == i) {
 631                 print_name(out, "issuer=", X509_get_issuer_name(x), get_nameopt());
 632             } else if (subject == i) {
 633                 print_name(out, "subject=",
 634                            X509_get_subject_name(x), get_nameopt());
 635             } else if (serial == i) {
 636                 BIO_printf(out, "serial=");
 637                 i2a_ASN1_INTEGER(out, X509_get_serialNumber(x));
 638                 BIO_printf(out, "\n");
 639             } else if (next_serial == i) {
 640                 ASN1_INTEGER *ser = X509_get_serialNumber(x);
 641                 BIGNUM *bnser = ASN1_INTEGER_to_BN(ser, NULL);
 642
 643                 if (!bnser)
 644                     goto end;
 645                 if (!BN_add_word(bnser, 1))
 646                     goto end;
 647                 ser = BN_to_ASN1_INTEGER(bnser, NULL);
 648                 if (!ser)
 649                     goto end;
 650                 BN_free(bnser);
 651                 i2a_ASN1_INTEGER(out, ser);
 652                 ASN1_INTEGER_free(ser);
 653                 BIO_puts(out, "\n");
 654             } else if ((email == i) || (ocsp_uri == i)) {
 655                 int j;
 656                 STACK_OF(OPENSSL_STRING) *emlst;
 657                 if (email == i)
 658                     emlst = X509_get1_email(x);
 659                 else
 660                     emlst = X509_get1_ocsp(x);
 661                 for (j = 0; j < sk_OPENSSL_STRING_num(emlst); j++)
 662                     BIO_printf(out, "%s\n",
 663                                sk_OPENSSL_STRING_value(emlst, j));
 664                 X509_email_free(emlst);
 665             } else if (aliasout == i) {
 666                 unsigned char *alstr;
 667                 alstr = X509_alias_get0(x, NULL);
 668                 if (alstr)
 669                     BIO_printf(out, "%s\n", alstr);
 670                 else
 671                     BIO_puts(out, "<No Alias>\n");
 672             } else if (subject_hash == i) {
 673                 BIO_printf(out, "%08lx\n", X509_subject_name_hash(x));
 674             }
 675 #ifndef OPENSSL_NO_MD5
 676             else if (subject_hash_old == i) {
 677                 BIO_printf(out, "%08lx\n", X509_subject_name_hash_old(x));
 678             }
 679 #endif
 680             else if (issuer_hash == i) {
 681                 BIO_printf(out, "%08lx\n", X509_issuer_name_hash(x));
 682             }
 683 #ifndef OPENSSL_NO_MD5
 684             else if (issuer_hash_old == i) {
 685                 BIO_printf(out, "%08lx\n", X509_issuer_name_hash_old(x));
 686             }
 687 #endif
 688             else if (pprint == i) {
 689                 X509_PURPOSE *ptmp;
 690                 int j;
 691                 BIO_printf(out, "Certificate purposes:\n");
 692                 for (j = 0; j < X509_PURPOSE_get_count(); j++) {
 693                     ptmp = X509_PURPOSE_get0(j);
 694                     purpose_print(out, x, ptmp);
 695                 }
 696             } else if (modulus == i) {
 697                 EVP_PKEY *pkey;
 698
 699                 pkey = X509_get0_pubkey(x);
 700                 if (pkey == NULL) {
 701                     BIO_printf(bio_err, "Modulus=unavailable\n");
 702                     ERR_print_errors(bio_err);
 703                     goto end;
 704                 }
 705                 BIO_printf(out, "Modulus=");
 706 #ifndef OPENSSL_NO_RSA
 707                 if (EVP_PKEY_id(pkey) == EVP_PKEY_RSA) {
 708                     const BIGNUM *n;
 709                     RSA_get0_key(EVP_PKEY_get0_RSA(pkey), &n, NULL, NULL);
 710                     BN_print(out, n);
 711                 } else
 712 #endif
 713 #ifndef OPENSSL_NO_DSA
 714                 if (EVP_PKEY_id(pkey) == EVP_PKEY_DSA) {
 715                     const BIGNUM *dsapub = NULL;
 716                     DSA_get0_key(EVP_PKEY_get0_DSA(pkey), &dsapub, NULL);
 717                     BN_print(out, dsapub);
 718                 } else
 719 #endif
 720                 {
 721                     BIO_printf(out, "Wrong Algorithm type");
 722                 }
 723                 BIO_printf(out, "\n");
 724             } else if (pubkey == i) {
 725                 EVP_PKEY *pkey;
 726
 727                 pkey = X509_get0_pubkey(x);
 728                 if (pkey == NULL) {
 729                     BIO_printf(bio_err, "Error getting public key\n");
 730                     ERR_print_errors(bio_err);
 731                     goto end;
 732                 }
 733                 PEM_write_bio_PUBKEY(out, pkey);
 734             } else if (C == i) {
 735                 unsigned char *d;
 736                 char *m;
 737                 int len;
 738
 739                 print_name(out, "/*\n"
 740                                 " * Subject: ", X509_get_subject_name(x), get_nameopt());
 741                 print_name(out, " * Issuer:  ", X509_get_issuer_name(x), get_nameopt());
 742                 BIO_puts(out, " */\n");
 743
 744                 len = i2d_X509(x, NULL);
 745                 m = app_malloc(len, "x509 name buffer");
 746                 d = (unsigned char *)m;
 747                 len = i2d_X509_NAME(X509_get_subject_name(x), &d);
 748                 print_array(out, "the_subject_name", len, (unsigned char *)m);
 749                 d = (unsigned char *)m;
 750                 len = i2d_X509_PUBKEY(X509_get_X509_PUBKEY(x), &d);
 751                 print_array(out, "the_public_key", len, (unsigned char *)m);
 752                 d = (unsigned char *)m;
 753                 len = i2d_X509(x, &d);
 754                 print_array(out, "the_certificate", len, (unsigned char *)m);
 755                 OPENSSL_free(m);
 756             } else if (text == i) {
 757                 X509_print_ex(out, x, get_nameopt(), certflag);
 758             } else if (startdate == i) {
 759                 BIO_puts(out, "notBefore=");
 760                 ASN1_TIME_print(out, X509_get0_notBefore(x));
 761                 BIO_puts(out, "\n");
 762             } else if (enddate == i) {
 763                 BIO_puts(out, "notAfter=");
 764                 ASN1_TIME_print(out, X509_get0_notAfter(x));
 765                 BIO_puts(out, "\n");
 766             } else if (fingerprint == i) {
 767                 int j;
 768                 unsigned int n;
 769                 unsigned char md[EVP_MAX_MD_SIZE];
 770                 const EVP_MD *fdig = digest;
 771
 772                 if (fdig == NULL)
 773                     fdig = EVP_sha1();
 774
 775                 if (!X509_digest(x, fdig, md, &n)) {
 776                     BIO_printf(bio_err, "out of memory\n");
 777                     goto end;
 778                 }
 779                 BIO_printf(out, "%s Fingerprint=",
 780                            OBJ_nid2sn(EVP_MD_type(fdig)));
 781                 for (j = 0; j < (int)n; j++) {
 782                     BIO_printf(out, "%02X%c", md[j], (j + 1 == (int)n)
 783                                ? '\n' : ':');
 784                 }
 785             }
 786
 787             /* should be in the library */
 788             else if ((sign_flag == i) && (x509req == 0)) {
 789                 BIO_printf(bio_err, "Getting Private key\n");
 790                 if (Upkey == NULL) {
 791                     Upkey = load_key(keyfile, keyformat, 0,
 792                                      passin, e, "Private key");
 793                     if (Upkey == NULL)
 794                         goto end;
 795                 }
 796
 797                 if (!sign(x, Upkey, days, clrext, digest, extconf, extsect, preserve_dates))
 798                     goto end;
 799             } else if (CA_flag == i) {
 800                 BIO_printf(bio_err, "Getting CA Private Key\n");
 801                 if (CAkeyfile != NULL) {
 802                     CApkey = load_key(CAkeyfile, CAkeyformat,
 803                                       0, passin, e, "CA Private Key");
 804                     if (CApkey == NULL)
 805                         goto end;
 806                 }
 807
 808                 if (!x509_certify(ctx, CAfile, digest, x, xca,
 809                                   CApkey, sigopts,
 810                                   CAserial, CA_createserial, days, clrext,
 811                                   extconf, extsect, sno, reqfile, preserve_dates))
 812                     goto end;
 813             } else if (x509req == i) {
 814                 EVP_PKEY *pk;
 815
 816                 BIO_printf(bio_err, "Getting request Private Key\n");
 817                 if (keyfile == NULL) {
 818                     BIO_printf(bio_err, "no request key file specified\n");
 819                     goto end;
 820                 } else {
 821                     pk = load_key(keyfile, keyformat, 0,
 822                                   passin, e, "request key");
 823                     if (pk == NULL)
 824                         goto end;
 825                 }
 826
 827                 BIO_printf(bio_err, "Generating certificate request\n");
 828
 829                 rq = X509_to_X509_REQ(x, pk, digest);
 830                 EVP_PKEY_free(pk);
 831                 if (rq == NULL) {
 832                     ERR_print_errors(bio_err);
 833                     goto end;
 834                 }
 835                 if (!noout) {
 836                     X509_REQ_print_ex(out, rq, get_nameopt(), X509_FLAG_COMPAT);
 837                     PEM_write_bio_X509_REQ(out, rq);
 838                 }
 839                 noout = 1;
 840             } else if (ocspid == i) {
 841                 X509_ocspid_print(out, x);
 842             }
 843         }
 844     }
 845
 846     if (checkend) {
 847         time_t tcheck = time(NULL) + checkoffset;
 848
 849         if (X509_cmp_time(X509_get0_notAfter(x), &tcheck) < 0) {
 850             BIO_printf(out, "Certificate will expire\n");
 851             ret = 1;
 852         } else {
 853             BIO_printf(out, "Certificate will not expire\n");
 854             ret = 0;
 855         }
 856         goto end;
 857     }
 858
 859     print_cert_checks(out, x, checkhost, checkemail, checkip);
 860
 861     if (noout || nocert) {
 862         ret = 0;
 863         goto end;
 864     }
 865
 866     if (outformat == FORMAT_ASN1) {
 867         i = i2d_X509_bio(out, x);
 868     } else if (outformat == FORMAT_PEM) {
 869         if (trustout)
 870             i = PEM_write_bio_X509_AUX(out, x);
 871         else
 872             i = PEM_write_bio_X509(out, x);
 873     } else {
 874         BIO_printf(bio_err, "bad output format specified for outfile\n");
 875         goto end;
 876     }
 877     if (!i) {
 878         BIO_printf(bio_err, "unable to write certificate\n");
 879         ERR_print_errors(bio_err);
 880         goto end;
 881     }
 882     ret = 0;
 883  end:
 884     NCONF_free(extconf);
 885     BIO_free_all(out);
 886     X509_STORE_free(ctx);
 887     X509_REQ_free(req);
 888     X509_free(x);
 889     X509_free(xca);
 890     EVP_PKEY_free(Upkey);
 891     EVP_PKEY_free(CApkey);
 892     EVP_PKEY_free(fkey);
 893     sk_OPENSSL_STRING_free(sigopts);
 894     X509_REQ_free(rq);
 895     ASN1_INTEGER_free(sno);
 896     sk_ASN1_OBJECT_pop_free(trust, ASN1_OBJECT_free);
 897     sk_ASN1_OBJECT_pop_free(reject, ASN1_OBJECT_free);
 898     ASN1_OBJECT_free(objtmp);
 899     release_engine(e);
 900     OPENSSL_free(passin);
 901     return ret;
 902 }
 903
 904 static ASN1_INTEGER *x509_load_serial(const char *CAfile,
 905                                       const char *serialfile, int create)
 906 {
 907     char *buf = NULL;
 908     ASN1_INTEGER *bs = NULL;
 909     BIGNUM *serial = NULL;
 910
 911     if (serialfile == NULL) {
 912         const char *p = strchr(CAfile, '.');
 913         size_t len = p != NULL ? (size_t)(p - CAfile) : strlen(CAfile);
 914
 915         buf = app_malloc(len + sizeof(POSTFIX), "serial# buffer");
 916         memcpy(buf, CAfile, len);
 917         memcpy(buf + len, POSTFIX, sizeof(POSTFIX));
 918         serialfile = buf;
 919     }
 920
 921     serial = load_serial(serialfile, create, NULL);
 922     if (serial == NULL)
 923         goto end;
 924
 925     if (!BN_add_word(serial, 1)) {
 926         BIO_printf(bio_err, "add_word failure\n");
 927         goto end;
 928     }
 929
 930     if (!save_serial(serialfile, NULL, serial, &bs))
 931         goto end;
 932
 933  end:
 934     OPENSSL_free(buf);
 935     BN_free(serial);
 936     return bs;
 937 }
 938
 939 static int x509_certify(X509_STORE *ctx, const char *CAfile, const EVP_MD *digest,
 940                         X509 *x, X509 *xca, EVP_PKEY *pkey,
 941                         STACK_OF(OPENSSL_STRING) *sigopts,
 942                         const char *serialfile, int create,
 943                         int days, int clrext, CONF *conf, const char *section,
 944                         ASN1_INTEGER *sno, int reqfile, int preserve_dates)
 945 {
 946     int ret = 0;
 947     ASN1_INTEGER *bs = NULL;
 948     X509_STORE_CTX *xsc = NULL;
 949     EVP_PKEY *upkey;
 950
 951     upkey = X509_get0_pubkey(xca);
 952     if (upkey == NULL) {
 953         BIO_printf(bio_err, "Error obtaining CA X509 public key\n");
 954         goto end;
 955     }
 956     EVP_PKEY_copy_parameters(upkey, pkey);
 957
 958     xsc = X509_STORE_CTX_new();
 959     if (xsc == NULL || !X509_STORE_CTX_init(xsc, ctx, x, NULL)) {
 960         BIO_printf(bio_err, "Error initialising X509 store\n");
 961         goto end;
 962     }
 963     if (sno)
 964         bs = sno;
 965     else if ((bs = x509_load_serial(CAfile, serialfile, create)) == NULL)
 966         goto end;
 967
 968     /*
 969      * NOTE: this certificate can/should be self signed, unless it was a
 970      * certificate request in which case it is not.
 971      */
 972     X509_STORE_CTX_set_cert(xsc, x);
 973     X509_STORE_CTX_set_flags(xsc, X509_V_FLAG_CHECK_SS_SIGNATURE);
 974     if (!reqfile && X509_verify_cert(xsc) <= 0)
 975         goto end;
 976
 977     if (!X509_check_private_key(xca, pkey)) {
 978         BIO_printf(bio_err,
 979                    "CA certificate and CA private key do not match\n");
 980         goto end;
 981     }
 982
 983     if (!X509_set_issuer_name(x, X509_get_subject_name(xca)))
 984         goto end;
 985     if (!X509_set_serialNumber(x, bs))
 986         goto end;
 987
 988     if (!preserve_dates && !set_cert_times(x, NULL, NULL, days))
 989         goto end;
 990
 991     if (clrext) {
 992         while (X509_get_ext_count(x) > 0)
 993             X509_delete_ext(x, 0);
 994     }
 995
 996     if (conf != NULL) {
 997         X509V3_CTX ctx2;
 998         X509_set_version(x, 2); /* version 3 certificate */
 999         X509V3_set_ctx(&ctx2, xca, x, NULL, NULL, 0);
1000         X509V3_set_nconf(&ctx2, conf);
1001         if (!X509V3_EXT_add_nconf(conf, &ctx2, section, x))
1002             goto end;
1003     }
1004
1005     if (!do_X509_sign(x, pkey, digest, sigopts))
1006         goto end;
1007     ret = 1;
1008  end:
1009     X509_STORE_CTX_free(xsc);
1010     if (!ret)
1011         ERR_print_errors(bio_err);
1012     if (!sno)
1013         ASN1_INTEGER_free(bs);
1014     return ret;
1015 }
1016
1017 static int callb(int ok, X509_STORE_CTX *ctx)
1018 {
1019     int err;
1020     X509 *err_cert;
1021
1022     /*
1023      * it is ok to use a self signed certificate This case will catch both
1024      * the initial ok == 0 and the final ok == 1 calls to this function
1025      */
1026     err = X509_STORE_CTX_get_error(ctx);
1027     if (err == X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT)
1028         return 1;
1029
1030     /*
1031      * BAD we should have gotten an error.  Normally if everything worked
1032      * X509_STORE_CTX_get_error(ctx) will still be set to
1033      * DEPTH_ZERO_SELF_....
1034      */
1035     if (ok) {
1036         BIO_printf(bio_err,
1037                    "error with certificate to be certified - should be self signed\n");
1038         return 0;
1039     } else {
1040         err_cert = X509_STORE_CTX_get_current_cert(ctx);
1041         print_name(bio_err, NULL, X509_get_subject_name(err_cert), 0);
1042         BIO_printf(bio_err,
1043                    "error with certificate - error %d at depth %d\n%s\n", err,
1044                    X509_STORE_CTX_get_error_depth(ctx),
1045                    X509_verify_cert_error_string(err));
1046         return 1;
1047     }
1048 }
1049
1050 /* self sign */
1051 static int sign(X509 *x, EVP_PKEY *pkey, int days, int clrext,
1052                 const EVP_MD *digest, CONF *conf, const char *section,
1053                 int preserve_dates)
1054 {
1055
1056     if (!X509_set_issuer_name(x, X509_get_subject_name(x)))
1057         goto err;
1058     if (!preserve_dates && !set_cert_times(x, NULL, NULL, days))
1059         goto err;
1060     if (!X509_set_pubkey(x, pkey))
1061         goto err;
1062     if (clrext) {
1063         while (X509_get_ext_count(x) > 0)
1064             X509_delete_ext(x, 0);
1065     }
1066     if (conf != NULL) {
1067         X509V3_CTX ctx;
1068         X509_set_version(x, 2); /* version 3 certificate */
1069         X509V3_set_ctx(&ctx, x, x, NULL, NULL, 0);
1070         X509V3_set_nconf(&ctx, conf);
1071         if (!X509V3_EXT_add_nconf(conf, &ctx, section, x))
1072             goto err;
1073     }
1074     if (!X509_sign(x, pkey, digest))
1075         goto err;
1076     return 1;
1077  err:
1078     ERR_print_errors(bio_err);
1079     return 0;
1080 }
1081
1082 static int purpose_print(BIO *bio, X509 *cert, X509_PURPOSE *pt)
1083 {
1084     int id, i, idret;
1085     const char *pname;
1086     id = X509_PURPOSE_get_id(pt);
1087     pname = X509_PURPOSE_get0_name(pt);
1088     for (i = 0; i < 2; i++) {
1089         idret = X509_check_purpose(cert, id, i);
1090         BIO_printf(bio, "%s%s : ", pname, i ? " CA" : "");
1091         if (idret == 1)
1092             BIO_printf(bio, "Yes\n");
1093         else if (idret == 0)
1094             BIO_printf(bio, "No\n");
1095         else
1096             BIO_printf(bio, "Yes (WARNING code=%d)\n", idret);
1097     }
1098     return 1;
1099 }