apps/req.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 <time.h>
  13 #include <string.h>
  14 #include "apps.h"
  15 #include <openssl/bio.h>
  16 #include <openssl/evp.h>
  17 #include <openssl/conf.h>
  18 #include <openssl/err.h>
  19 #include <openssl/asn1.h>
  20 #include <openssl/x509.h>
  21 #include <openssl/x509v3.h>
  22 #include <openssl/objects.h>
  23 #include <openssl/pem.h>
  24 #include <openssl/bn.h>
  25 #ifndef OPENSSL_NO_RSA
  26 # include <openssl/rsa.h>
  27 #endif
  28 #ifndef OPENSSL_NO_DSA
  29 # include <openssl/dsa.h>
  30 #endif
  31
  32 #define SECTION         "req"
  33
  34 #define BITS            "default_bits"
  35 #define KEYFILE         "default_keyfile"
  36 #define PROMPT          "prompt"
  37 #define DISTINGUISHED_NAME      "distinguished_name"
  38 #define ATTRIBUTES      "attributes"
  39 #define V3_EXTENSIONS   "x509_extensions"
  40 #define REQ_EXTENSIONS  "req_extensions"
  41 #define STRING_MASK     "string_mask"
  42 #define UTF8_IN         "utf8"
  43
  44 #define DEFAULT_KEY_LENGTH      2048
  45 #define MIN_KEY_LENGTH          512
  46
  47 static int make_REQ(X509_REQ *req, EVP_PKEY *pkey, char *dn, int mutlirdn,
  48                     int attribs, unsigned long chtype);
  49 static int build_subject(X509_REQ *req, const char *subj, unsigned long chtype,
  50                          int multirdn);
  51 static int prompt_info(X509_REQ *req,
  52                        STACK_OF(CONF_VALUE) *dn_sk, const char *dn_sect,
  53                        STACK_OF(CONF_VALUE) *attr_sk, const char *attr_sect,
  54                        int attribs, unsigned long chtype);
  55 static int auto_info(X509_REQ *req, STACK_OF(CONF_VALUE) *sk,
  56                      STACK_OF(CONF_VALUE) *attr, int attribs,
  57                      unsigned long chtype);
  58 static int add_attribute_object(X509_REQ *req, char *text, const char *def,
  59                                 char *value, int nid, int n_min, int n_max,
  60                                 unsigned long chtype);
  61 static int add_DN_object(X509_NAME *n, char *text, const char *def,
  62                          char *value, int nid, int n_min, int n_max,
  63                          unsigned long chtype, int mval);
  64 static int genpkey_cb(EVP_PKEY_CTX *ctx);
  65 static int req_check_len(int len, int n_min, int n_max);
  66 static int check_end(const char *str, const char *end);
  67 static EVP_PKEY_CTX *set_keygen_ctx(const char *gstr,
  68                                     int *pkey_type, long *pkeylen,
  69                                     char **palgnam, ENGINE *keygen_engine);
  70 static CONF *req_conf = NULL;
  71 static int batch = 0;
  72
  73 typedef enum OPTION_choice {
  74     OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
  75     OPT_INFORM, OPT_OUTFORM, OPT_ENGINE, OPT_KEYGEN_ENGINE, OPT_KEY,
  76     OPT_PUBKEY, OPT_NEW, OPT_CONFIG, OPT_KEYFORM, OPT_IN, OPT_OUT,
  77     OPT_KEYOUT, OPT_PASSIN, OPT_PASSOUT, OPT_RAND, OPT_NEWKEY,
  78     OPT_PKEYOPT, OPT_SIGOPT, OPT_BATCH, OPT_NEWHDR, OPT_MODULUS,
  79     OPT_VERIFY, OPT_NODES, OPT_NOOUT, OPT_VERBOSE, OPT_UTF8,
  80     OPT_NAMEOPT, OPT_REQOPT, OPT_SUBJ, OPT_SUBJECT, OPT_TEXT, OPT_X509,
  81     OPT_MULTIVALUE_RDN, OPT_DAYS, OPT_SET_SERIAL, OPT_EXTENSIONS,
  82     OPT_REQEXTS, OPT_PRECERT, OPT_MD
  83 } OPTION_CHOICE;
  84
  85 const OPTIONS req_options[] = {
  86     {"help", OPT_HELP, '-', "Display this summary"},
  87     {"inform", OPT_INFORM, 'F', "Input format - DER or PEM"},
  88     {"outform", OPT_OUTFORM, 'F', "Output format - DER or PEM"},
  89     {"in", OPT_IN, '<', "Input file"},
  90     {"out", OPT_OUT, '>', "Output file"},
  91     {"key", OPT_KEY, 's', "Private key to use"},
  92     {"keyform", OPT_KEYFORM, 'f', "Key file format"},
  93     {"pubkey", OPT_PUBKEY, '-', "Output public key"},
  94     {"new", OPT_NEW, '-', "New request"},
  95     {"config", OPT_CONFIG, '<', "Request template file"},
  96     {"keyout", OPT_KEYOUT, '>', "File to send the key to"},
  97     {"passin", OPT_PASSIN, 's', "Private key password source"},
  98     {"passout", OPT_PASSOUT, 's', "Output file pass phrase source"},
  99     {"rand", OPT_RAND, 's',
 100      "Load the file(s) into the random number generator"},
 101     {"newkey", OPT_NEWKEY, 's', "Specify as type:bits"},
 102     {"pkeyopt", OPT_PKEYOPT, 's', "Public key options as opt:value"},
 103     {"sigopt", OPT_SIGOPT, 's', "Signature parameter in n:v form"},
 104     {"batch", OPT_BATCH, '-',
 105      "Do not ask anything during request generation"},
 106     {"newhdr", OPT_NEWHDR, '-', "Output \"NEW\" in the header lines"},
 107     {"modulus", OPT_MODULUS, '-', "RSA modulus"},
 108     {"verify", OPT_VERIFY, '-', "Verify signature on REQ"},
 109     {"nodes", OPT_NODES, '-', "Don't encrypt the output key"},
 110     {"noout", OPT_NOOUT, '-', "Do not output REQ"},
 111     {"verbose", OPT_VERBOSE, '-', "Verbose output"},
 112     {"utf8", OPT_UTF8, '-', "Input characters are UTF8 (default ASCII)"},
 113     {"nameopt", OPT_NAMEOPT, 's', "Various certificate name options"},
 114     {"reqopt", OPT_REQOPT, 's', "Various request text options"},
 115     {"text", OPT_TEXT, '-', "Text form of request"},
 116     {"x509", OPT_X509, '-',
 117      "Output a x509 structure instead of a cert request"},
 118     {OPT_MORE_STR, 1, 1, "(Required by some CA's)"},
 119     {"subj", OPT_SUBJ, 's', "Set or modify request subject"},
 120     {"subject", OPT_SUBJECT, '-', "Output the request's subject"},
 121     {"multivalue-rdn", OPT_MULTIVALUE_RDN, '-',
 122      "Enable support for multivalued RDNs"},
 123     {"days", OPT_DAYS, 'p', "Number of days cert is valid for"},
 124     {"set_serial", OPT_SET_SERIAL, 's', "Serial number to use"},
 125     {"extensions", OPT_EXTENSIONS, 's',
 126      "Cert extension section (override value in config file)"},
 127     {"reqexts", OPT_REQEXTS, 's',
 128      "Request extension section (override value in config file)"},
 129     {"precert", OPT_PRECERT, '-', "Add a poison extension (implies -new)"},
 130     {"", OPT_MD, '-', "Any supported digest"},
 131 #ifndef OPENSSL_NO_ENGINE
 132     {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
 133     {"keygen_engine", OPT_KEYGEN_ENGINE, 's',
 134      "Specify engine to be used for key generation operations"},
 135 #endif
 136     {NULL}
 137 };
 138
 139 int req_main(int argc, char **argv)
 140 {
 141     ASN1_INTEGER *serial = NULL;
 142     BIO *in = NULL, *out = NULL;
 143     ENGINE *e = NULL, *gen_eng = NULL;
 144     EVP_PKEY *pkey = NULL;
 145     EVP_PKEY_CTX *genctx = NULL;
 146     STACK_OF(OPENSSL_STRING) *pkeyopts = NULL, *sigopts = NULL;
 147     X509 *x509ss = NULL;
 148     X509_REQ *req = NULL;
 149     const EVP_CIPHER *cipher = NULL;
 150     const EVP_MD *md_alg = NULL, *digest = NULL;
 151     char *extensions = NULL, *infile = NULL;
 152     char *outfile = NULL, *keyfile = NULL, *inrand = NULL;
 153     char *keyalgstr = NULL, *p, *prog, *passargin = NULL, *passargout = NULL;
 154     char *passin = NULL, *passout = NULL;
 155     char *nofree_passin = NULL, *nofree_passout = NULL;
 156     char *req_exts = NULL, *subj = NULL;
 157     char *template = default_config_file, *keyout = NULL;
 158     const char *keyalg = NULL;
 159     OPTION_CHOICE o;
 160     int ret = 1, x509 = 0, days = 30, i = 0, newreq = 0, verbose = 0;
 161     int pkey_type = -1, private = 0;
 162     int informat = FORMAT_PEM, outformat = FORMAT_PEM, keyform = FORMAT_PEM;
 163     int modulus = 0, multirdn = 0, verify = 0, noout = 0, text = 0;
 164     int nodes = 0, newhdr = 0, subject = 0, pubkey = 0, precert = 0;
 165     long newkey = -1;
 166     unsigned long chtype = MBSTRING_ASC, reqflag = 0;
 167
 168 #ifndef OPENSSL_NO_DES
 169     cipher = EVP_des_ede3_cbc();
 170 #endif
 171
 172     prog = opt_init(argc, argv, req_options);
 173     while ((o = opt_next()) != OPT_EOF) {
 174         switch (o) {
 175         case OPT_EOF:
 176         case OPT_ERR:
 177  opthelp:
 178             BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
 179             goto end;
 180         case OPT_HELP:
 181             opt_help(req_options);
 182             ret = 0;
 183             goto end;
 184         case OPT_INFORM:
 185             if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &informat))
 186                 goto opthelp;
 187             break;
 188         case OPT_OUTFORM:
 189             if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &outformat))
 190                 goto opthelp;
 191             break;
 192         case OPT_ENGINE:
 193             e = setup_engine(opt_arg(), 0);
 194             break;
 195         case OPT_KEYGEN_ENGINE:
 196 #ifndef OPENSSL_NO_ENGINE
 197             gen_eng = ENGINE_by_id(opt_arg());
 198             if (gen_eng == NULL) {
 199                 BIO_printf(bio_err, "Can't find keygen engine %s\n", *argv);
 200                 goto opthelp;
 201             }
 202 #endif
 203             break;
 204         case OPT_KEY:
 205             keyfile = opt_arg();
 206             break;
 207         case OPT_PUBKEY:
 208             pubkey = 1;
 209             break;
 210         case OPT_NEW:
 211             newreq = 1;
 212             break;
 213         case OPT_CONFIG:
 214             template = opt_arg();
 215             break;
 216         case OPT_KEYFORM:
 217             if (!opt_format(opt_arg(), OPT_FMT_ANY, &keyform))
 218                 goto opthelp;
 219             break;
 220         case OPT_IN:
 221             infile = opt_arg();
 222             break;
 223         case OPT_OUT:
 224             outfile = opt_arg();
 225             break;
 226         case OPT_KEYOUT:
 227             keyout = opt_arg();
 228             break;
 229         case OPT_PASSIN:
 230             passargin = opt_arg();
 231             break;
 232         case OPT_PASSOUT:
 233             passargout = opt_arg();
 234             break;
 235         case OPT_RAND:
 236             inrand = opt_arg();
 237             break;
 238         case OPT_NEWKEY:
 239             keyalg = opt_arg();
 240             newreq = 1;
 241             break;
 242         case OPT_PKEYOPT:
 243             if (!pkeyopts)
 244                 pkeyopts = sk_OPENSSL_STRING_new_null();
 245             if (!pkeyopts || !sk_OPENSSL_STRING_push(pkeyopts, opt_arg()))
 246                 goto opthelp;
 247             break;
 248         case OPT_SIGOPT:
 249             if (!sigopts)
 250                 sigopts = sk_OPENSSL_STRING_new_null();
 251             if (!sigopts || !sk_OPENSSL_STRING_push(sigopts, opt_arg()))
 252                 goto opthelp;
 253             break;
 254         case OPT_BATCH:
 255             batch = 1;
 256             break;
 257         case OPT_NEWHDR:
 258             newhdr = 1;
 259             break;
 260         case OPT_MODULUS:
 261             modulus = 1;
 262             break;
 263         case OPT_VERIFY:
 264             verify = 1;
 265             break;
 266         case OPT_NODES:
 267             nodes = 1;
 268             break;
 269         case OPT_NOOUT:
 270             noout = 1;
 271             break;
 272         case OPT_VERBOSE:
 273             verbose = 1;
 274             break;
 275         case OPT_UTF8:
 276             chtype = MBSTRING_UTF8;
 277             break;
 278         case OPT_NAMEOPT:
 279             if (!set_nameopt(opt_arg()))
 280                 goto opthelp;
 281             break;
 282         case OPT_REQOPT:
 283             if (!set_cert_ex(&reqflag, opt_arg()))
 284                 goto opthelp;
 285             break;
 286         case OPT_TEXT:
 287             text = 1;
 288             break;
 289         case OPT_X509:
 290             x509 = 1;
 291             break;
 292         case OPT_DAYS:
 293             days = atoi(opt_arg());
 294             break;
 295         case OPT_SET_SERIAL:
 296             if (serial != NULL) {
 297                 BIO_printf(bio_err, "Serial number supplied twice\n");
 298                 goto opthelp;
 299             }
 300             serial = s2i_ASN1_INTEGER(NULL, opt_arg());
 301             if (serial == NULL)
 302                 goto opthelp;
 303             break;
 304         case OPT_SUBJECT:
 305             subject = 1;
 306             break;
 307         case OPT_SUBJ:
 308             subj = opt_arg();
 309             break;
 310         case OPT_MULTIVALUE_RDN:
 311             multirdn = 1;
 312             break;
 313         case OPT_EXTENSIONS:
 314             extensions = opt_arg();
 315             break;
 316         case OPT_REQEXTS:
 317             req_exts = opt_arg();
 318             break;
 319         case OPT_PRECERT:
 320             newreq = precert = 1;
 321             break;
 322         case OPT_MD:
 323             if (!opt_md(opt_unknown(), &md_alg))
 324                 goto opthelp;
 325             digest = md_alg;
 326             break;
 327         }
 328     }
 329     argc = opt_num_rest();
 330     if (argc != 0)
 331         goto opthelp;
 332
 333     if (x509 && infile == NULL)
 334         newreq = 1;
 335
 336     /* TODO: simplify this as pkey is still always NULL here */
 337     private = newreq && (pkey == NULL) ? 1 : 0;
 338
 339     if (!app_passwd(passargin, passargout, &passin, &passout)) {
 340         BIO_printf(bio_err, "Error getting passwords\n");
 341         goto end;
 342     }
 343
 344     if (verbose)
 345         BIO_printf(bio_err, "Using configuration from %s\n", template);
 346     req_conf = app_load_config(template);
 347     if (template != default_config_file && !app_load_modules(req_conf))
 348         goto end;
 349
 350     if (req_conf != NULL) {
 351         p = NCONF_get_string(req_conf, NULL, "oid_file");
 352         if (p == NULL)
 353             ERR_clear_error();
 354         if (p != NULL) {
 355             BIO *oid_bio;
 356
 357             oid_bio = BIO_new_file(p, "r");
 358             if (oid_bio == NULL) {
 359                 /*-
 360                 BIO_printf(bio_err,"problems opening %s for extra oid's\n",p);
 361                 ERR_print_errors(bio_err);
 362                 */
 363             } else {
 364                 OBJ_create_objects(oid_bio);
 365                 BIO_free(oid_bio);
 366             }
 367         }
 368     }
 369     if (!add_oid_section(req_conf))
 370         goto end;
 371
 372     if (md_alg == NULL) {
 373         p = NCONF_get_string(req_conf, SECTION, "default_md");
 374         if (p == NULL) {
 375             ERR_clear_error();
 376         } else {
 377             if (!opt_md(p, &md_alg))
 378                 goto opthelp;
 379             digest = md_alg;
 380         }
 381     }
 382
 383     if (extensions == NULL) {
 384         extensions = NCONF_get_string(req_conf, SECTION, V3_EXTENSIONS);
 385         if (extensions == NULL)
 386             ERR_clear_error();
 387     }
 388     if (extensions != NULL) {
 389         /* Check syntax of file */
 390         X509V3_CTX ctx;
 391         X509V3_set_ctx_test(&ctx);
 392         X509V3_set_nconf(&ctx, req_conf);
 393         if (!X509V3_EXT_add_nconf(req_conf, &ctx, extensions, NULL)) {
 394             BIO_printf(bio_err,
 395                        "Error Loading extension section %s\n", extensions);
 396             goto end;
 397         }
 398     }
 399
 400     if (passin == NULL) {
 401         passin = nofree_passin =
 402             NCONF_get_string(req_conf, SECTION, "input_password");
 403         if (passin == NULL)
 404             ERR_clear_error();
 405     }
 406
 407     if (passout == NULL) {
 408         passout = nofree_passout =
 409             NCONF_get_string(req_conf, SECTION, "output_password");
 410         if (passout == NULL)
 411             ERR_clear_error();
 412     }
 413
 414     p = NCONF_get_string(req_conf, SECTION, STRING_MASK);
 415     if (p == NULL)
 416         ERR_clear_error();
 417
 418     if (p != NULL && !ASN1_STRING_set_default_mask_asc(p)) {
 419         BIO_printf(bio_err, "Invalid global string mask setting %s\n", p);
 420         goto end;
 421     }
 422
 423     if (chtype != MBSTRING_UTF8) {
 424         p = NCONF_get_string(req_conf, SECTION, UTF8_IN);
 425         if (p == NULL)
 426             ERR_clear_error();
 427         else if (strcmp(p, "yes") == 0)
 428             chtype = MBSTRING_UTF8;
 429     }
 430
 431     if (req_exts == NULL) {
 432         req_exts = NCONF_get_string(req_conf, SECTION, REQ_EXTENSIONS);
 433         if (req_exts == NULL)
 434             ERR_clear_error();
 435     }
 436     if (req_exts != NULL) {
 437         /* Check syntax of file */
 438         X509V3_CTX ctx;
 439         X509V3_set_ctx_test(&ctx);
 440         X509V3_set_nconf(&ctx, req_conf);
 441         if (!X509V3_EXT_add_nconf(req_conf, &ctx, req_exts, NULL)) {
 442             BIO_printf(bio_err,
 443                        "Error Loading request extension section %s\n",
 444                        req_exts);
 445             goto end;
 446         }
 447     }
 448
 449     if (keyfile != NULL) {
 450         pkey = load_key(keyfile, keyform, 0, passin, e, "Private Key");
 451         if (pkey == NULL) {
 452             /* load_key() has already printed an appropriate message */
 453             goto end;
 454         } else {
 455             char *randfile = NCONF_get_string(req_conf, SECTION, "RANDFILE");
 456             if (randfile == NULL)
 457                 ERR_clear_error();
 458             app_RAND_load_file(randfile, 0);
 459         }
 460     }
 461
 462     if (newreq && (pkey == NULL)) {
 463         char *randfile = NCONF_get_string(req_conf, SECTION, "RANDFILE");
 464         if (randfile == NULL)
 465             ERR_clear_error();
 466         app_RAND_load_file(randfile, 0);
 467         if (inrand != NULL)
 468             app_RAND_load_files(inrand);
 469
 470         if (!NCONF_get_number(req_conf, SECTION, BITS, &newkey)) {
 471             newkey = DEFAULT_KEY_LENGTH;
 472         }
 473
 474         if (keyalg != NULL) {
 475             genctx = set_keygen_ctx(keyalg, &pkey_type, &newkey,
 476                                     &keyalgstr, gen_eng);
 477             if (genctx == NULL)
 478                 goto end;
 479         }
 480
 481         if (newkey < MIN_KEY_LENGTH
 482             && (pkey_type == EVP_PKEY_RSA || pkey_type == EVP_PKEY_DSA)) {
 483             BIO_printf(bio_err, "private key length is too short,\n");
 484             BIO_printf(bio_err, "it needs to be at least %d bits, not %ld\n",
 485                        MIN_KEY_LENGTH, newkey);
 486             goto end;
 487         }
 488
 489         if (genctx == NULL) {
 490             genctx = set_keygen_ctx(NULL, &pkey_type, &newkey,
 491                                     &keyalgstr, gen_eng);
 492             if (!genctx)
 493                 goto end;
 494         }
 495
 496         if (pkeyopts != NULL) {
 497             char *genopt;
 498             for (i = 0; i < sk_OPENSSL_STRING_num(pkeyopts); i++) {
 499                 genopt = sk_OPENSSL_STRING_value(pkeyopts, i);
 500                 if (pkey_ctrl_string(genctx, genopt) <= 0) {
 501                     BIO_printf(bio_err, "parameter error \"%s\"\n", genopt);
 502                     ERR_print_errors(bio_err);
 503                     goto end;
 504                 }
 505             }
 506         }
 507
 508         if (pkey_type == EVP_PKEY_EC) {
 509             BIO_printf(bio_err, "Generating an EC private key\n");
 510         } else {
 511             BIO_printf(bio_err, "Generating a %ld bit %s private key\n",
 512                        newkey, keyalgstr);
 513         }
 514
 515         EVP_PKEY_CTX_set_cb(genctx, genpkey_cb);
 516         EVP_PKEY_CTX_set_app_data(genctx, bio_err);
 517
 518         if (EVP_PKEY_keygen(genctx, &pkey) <= 0) {
 519             BIO_puts(bio_err, "Error Generating Key\n");
 520             goto end;
 521         }
 522
 523         EVP_PKEY_CTX_free(genctx);
 524         genctx = NULL;
 525
 526         app_RAND_write_file(randfile);
 527
 528         if (keyout == NULL) {
 529             keyout = NCONF_get_string(req_conf, SECTION, KEYFILE);
 530             if (keyout == NULL)
 531                 ERR_clear_error();
 532         }
 533
 534         if (keyout == NULL)
 535             BIO_printf(bio_err, "writing new private key to stdout\n");
 536         else
 537             BIO_printf(bio_err, "writing new private key to '%s'\n", keyout);
 538         out = bio_open_owner(keyout, outformat, private);
 539         if (out == NULL)
 540             goto end;
 541
 542         p = NCONF_get_string(req_conf, SECTION, "encrypt_rsa_key");
 543         if (p == NULL) {
 544             ERR_clear_error();
 545             p = NCONF_get_string(req_conf, SECTION, "encrypt_key");
 546             if (p == NULL)
 547                 ERR_clear_error();
 548         }
 549         if ((p != NULL) && (strcmp(p, "no") == 0))
 550             cipher = NULL;
 551         if (nodes)
 552             cipher = NULL;
 553
 554         i = 0;
 555  loop:
 556         assert(private);
 557         if (!PEM_write_bio_PrivateKey(out, pkey, cipher,
 558                                       NULL, 0, NULL, passout)) {
 559             if ((ERR_GET_REASON(ERR_peek_error()) ==
 560                  PEM_R_PROBLEMS_GETTING_PASSWORD) && (i < 3)) {
 561                 ERR_clear_error();
 562                 i++;
 563                 goto loop;
 564             }
 565             goto end;
 566         }
 567         BIO_free(out);
 568         out = NULL;
 569         BIO_printf(bio_err, "-----\n");
 570     }
 571
 572     if (!newreq) {
 573         in = bio_open_default(infile, 'r', informat);
 574         if (in == NULL)
 575             goto end;
 576
 577         if (informat == FORMAT_ASN1)
 578             req = d2i_X509_REQ_bio(in, NULL);
 579         else
 580             req = PEM_read_bio_X509_REQ(in, NULL, NULL, NULL);
 581         if (req == NULL) {
 582             BIO_printf(bio_err, "unable to load X509 request\n");
 583             goto end;
 584         }
 585     }
 586
 587     if (newreq || x509) {
 588         if (pkey == NULL) {
 589             BIO_printf(bio_err, "you need to specify a private key\n");
 590             goto end;
 591         }
 592
 593         if (req == NULL) {
 594             req = X509_REQ_new();
 595             if (req == NULL) {
 596                 goto end;
 597             }
 598
 599             i = make_REQ(req, pkey, subj, multirdn, !x509, chtype);
 600             subj = NULL;        /* done processing '-subj' option */
 601             if (!i) {
 602                 BIO_printf(bio_err, "problems making Certificate Request\n");
 603                 goto end;
 604             }
 605         }
 606         if (x509) {
 607             EVP_PKEY *tmppkey;
 608             X509V3_CTX ext_ctx;
 609             if ((x509ss = X509_new()) == NULL)
 610                 goto end;
 611
 612             /* Set version to V3 */
 613             if (extensions != NULL && !X509_set_version(x509ss, 2))
 614                 goto end;
 615             if (serial != NULL) {
 616                 if (!X509_set_serialNumber(x509ss, serial))
 617                     goto end;
 618             } else {
 619                 if (!rand_serial(NULL, X509_get_serialNumber(x509ss)))
 620                     goto end;
 621             }
 622
 623             if (!X509_set_issuer_name(x509ss, X509_REQ_get_subject_name(req)))
 624                 goto end;
 625             if (!set_cert_times(x509ss, NULL, NULL, days))
 626                 goto end;
 627             if (!X509_set_subject_name
 628                 (x509ss, X509_REQ_get_subject_name(req)))
 629                 goto end;
 630             tmppkey = X509_REQ_get0_pubkey(req);
 631             if (!tmppkey || !X509_set_pubkey(x509ss, tmppkey))
 632                 goto end;
 633
 634             /* Set up V3 context struct */
 635
 636             X509V3_set_ctx(&ext_ctx, x509ss, x509ss, NULL, NULL, 0);
 637             X509V3_set_nconf(&ext_ctx, req_conf);
 638
 639             /* Add extensions */
 640             if (extensions != NULL && !X509V3_EXT_add_nconf(req_conf,
 641                                                             &ext_ctx, extensions,
 642                                                             x509ss)) {
 643                 BIO_printf(bio_err, "Error Loading extension section %s\n",
 644                            extensions);
 645                 goto end;
 646             }
 647
 648             /* If a pre-cert was requested, we need to add a poison extension */
 649             if (precert) {
 650                 if (X509_add1_ext_i2d(x509ss, NID_ct_precert_poison, NULL, 1, 0)
 651                     != 1) {
 652                     BIO_printf(bio_err, "Error adding poison extension\n");
 653                     goto end;
 654                 }
 655             }
 656
 657             i = do_X509_sign(x509ss, pkey, digest, sigopts);
 658             if (!i) {
 659                 ERR_print_errors(bio_err);
 660                 goto end;
 661             }
 662         } else {
 663             X509V3_CTX ext_ctx;
 664
 665             /* Set up V3 context struct */
 666
 667             X509V3_set_ctx(&ext_ctx, NULL, NULL, req, NULL, 0);
 668             X509V3_set_nconf(&ext_ctx, req_conf);
 669
 670             /* Add extensions */
 671             if (req_exts != NULL
 672                 && !X509V3_EXT_REQ_add_nconf(req_conf, &ext_ctx,
 673                                              req_exts, req)) {
 674                 BIO_printf(bio_err, "Error Loading extension section %s\n",
 675                            req_exts);
 676                 goto end;
 677             }
 678             i = do_X509_REQ_sign(req, pkey, digest, sigopts);
 679             if (!i) {
 680                 ERR_print_errors(bio_err);
 681                 goto end;
 682             }
 683         }
 684     }
 685
 686     if (subj && x509) {
 687         BIO_printf(bio_err, "Cannot modify certificate subject\n");
 688         goto end;
 689     }
 690
 691     if (subj && !x509) {
 692         if (verbose) {
 693             BIO_printf(bio_err, "Modifying Request's Subject\n");
 694             print_name(bio_err, "old subject=",
 695                        X509_REQ_get_subject_name(req), get_nameopt());
 696         }
 697
 698         if (build_subject(req, subj, chtype, multirdn) == 0) {
 699             BIO_printf(bio_err, "ERROR: cannot modify subject\n");
 700             ret = 1;
 701             goto end;
 702         }
 703
 704         if (verbose) {
 705             print_name(bio_err, "new subject=",
 706                        X509_REQ_get_subject_name(req), get_nameopt());
 707         }
 708     }
 709
 710     if (verify && !x509) {
 711         EVP_PKEY *tpubkey = pkey;
 712
 713         if (tpubkey == NULL) {
 714             tpubkey = X509_REQ_get0_pubkey(req);
 715             if (tpubkey == NULL)
 716                 goto end;
 717         }
 718
 719         i = X509_REQ_verify(req, tpubkey);
 720
 721         if (i < 0) {
 722             goto end;
 723         } else if (i == 0) {
 724             BIO_printf(bio_err, "verify failure\n");
 725             ERR_print_errors(bio_err);
 726         } else {                 /* if (i > 0) */
 727             BIO_printf(bio_err, "verify OK\n");
 728         }
 729     }
 730
 731     if (noout && !text && !modulus && !subject && !pubkey) {
 732         ret = 0;
 733         goto end;
 734     }
 735
 736     out = bio_open_default(outfile,
 737                            keyout != NULL && outfile != NULL &&
 738                            strcmp(keyout, outfile) == 0 ? 'a' : 'w',
 739                            outformat);
 740     if (out == NULL)
 741         goto end;
 742
 743     if (pubkey) {
 744         EVP_PKEY *tpubkey = X509_REQ_get0_pubkey(req);
 745
 746         if (tpubkey == NULL) {
 747             BIO_printf(bio_err, "Error getting public key\n");
 748             ERR_print_errors(bio_err);
 749             goto end;
 750         }
 751         PEM_write_bio_PUBKEY(out, tpubkey);
 752     }
 753
 754     if (text) {
 755         if (x509)
 756             X509_print_ex(out, x509ss, get_nameopt(), reqflag);
 757         else
 758             X509_REQ_print_ex(out, req, get_nameopt(), reqflag);
 759     }
 760
 761     if (subject) {
 762         if (x509)
 763             print_name(out, "subject=", X509_get_subject_name(x509ss),
 764                        get_nameopt());
 765         else
 766             print_name(out, "subject=", X509_REQ_get_subject_name(req),
 767                        get_nameopt());
 768     }
 769
 770     if (modulus) {
 771         EVP_PKEY *tpubkey;
 772
 773         if (x509)
 774             tpubkey = X509_get0_pubkey(x509ss);
 775         else
 776             tpubkey = X509_REQ_get0_pubkey(req);
 777         if (tpubkey == NULL) {
 778             fprintf(stdout, "Modulus=unavailable\n");
 779             goto end;
 780         }
 781         fprintf(stdout, "Modulus=");
 782 #ifndef OPENSSL_NO_RSA
 783         if (EVP_PKEY_base_id(tpubkey) == EVP_PKEY_RSA) {
 784             const BIGNUM *n;
 785             RSA_get0_key(EVP_PKEY_get0_RSA(tpubkey), &n, NULL, NULL);
 786             BN_print(out, n);
 787         } else
 788 #endif
 789             fprintf(stdout, "Wrong Algorithm type");
 790         fprintf(stdout, "\n");
 791     }
 792
 793     if (!noout && !x509) {
 794         if (outformat == FORMAT_ASN1)
 795             i = i2d_X509_REQ_bio(out, req);
 796         else if (newhdr)
 797             i = PEM_write_bio_X509_REQ_NEW(out, req);
 798         else
 799             i = PEM_write_bio_X509_REQ(out, req);
 800         if (!i) {
 801             BIO_printf(bio_err, "unable to write X509 request\n");
 802             goto end;
 803         }
 804     }
 805     if (!noout && x509 && (x509ss != NULL)) {
 806         if (outformat == FORMAT_ASN1)
 807             i = i2d_X509_bio(out, x509ss);
 808         else
 809             i = PEM_write_bio_X509(out, x509ss);
 810         if (!i) {
 811             BIO_printf(bio_err, "unable to write X509 certificate\n");
 812             goto end;
 813         }
 814     }
 815     ret = 0;
 816  end:
 817     if (ret) {
 818         ERR_print_errors(bio_err);
 819     }
 820     NCONF_free(req_conf);
 821     BIO_free(in);
 822     BIO_free_all(out);
 823     EVP_PKEY_free(pkey);
 824     EVP_PKEY_CTX_free(genctx);
 825     sk_OPENSSL_STRING_free(pkeyopts);
 826     sk_OPENSSL_STRING_free(sigopts);
 827 #ifndef OPENSSL_NO_ENGINE
 828     ENGINE_free(gen_eng);
 829 #endif
 830     OPENSSL_free(keyalgstr);
 831     X509_REQ_free(req);
 832     X509_free(x509ss);
 833     ASN1_INTEGER_free(serial);
 834     release_engine(e);
 835     if (passin != nofree_passin)
 836         OPENSSL_free(passin);
 837     if (passout != nofree_passout)
 838         OPENSSL_free(passout);
 839     return (ret);
 840 }
 841
 842 static int make_REQ(X509_REQ *req, EVP_PKEY *pkey, char *subj, int multirdn,
 843                     int attribs, unsigned long chtype)
 844 {
 845     int ret = 0, i;
 846     char no_prompt = 0;
 847     STACK_OF(CONF_VALUE) *dn_sk, *attr_sk = NULL;
 848     char *tmp, *dn_sect, *attr_sect;
 849
 850     tmp = NCONF_get_string(req_conf, SECTION, PROMPT);
 851     if (tmp == NULL)
 852         ERR_clear_error();
 853     if ((tmp != NULL) && strcmp(tmp, "no") == 0)
 854         no_prompt = 1;
 855
 856     dn_sect = NCONF_get_string(req_conf, SECTION, DISTINGUISHED_NAME);
 857     if (dn_sect == NULL) {
 858         BIO_printf(bio_err, "unable to find '%s' in config\n",
 859                    DISTINGUISHED_NAME);
 860         goto err;
 861     }
 862     dn_sk = NCONF_get_section(req_conf, dn_sect);
 863     if (dn_sk == NULL) {
 864         BIO_printf(bio_err, "unable to get '%s' section\n", dn_sect);
 865         goto err;
 866     }
 867
 868     attr_sect = NCONF_get_string(req_conf, SECTION, ATTRIBUTES);
 869     if (attr_sect == NULL) {
 870         ERR_clear_error();
 871         attr_sk = NULL;
 872     } else {
 873         attr_sk = NCONF_get_section(req_conf, attr_sect);
 874         if (attr_sk == NULL) {
 875             BIO_printf(bio_err, "unable to get '%s' section\n", attr_sect);
 876             goto err;
 877         }
 878     }
 879
 880     /* setup version number */
 881     if (!X509_REQ_set_version(req, 0L))
 882         goto err;               /* version 1 */
 883
 884     if (subj)
 885         i = build_subject(req, subj, chtype, multirdn);
 886     else if (no_prompt)
 887         i = auto_info(req, dn_sk, attr_sk, attribs, chtype);
 888     else
 889         i = prompt_info(req, dn_sk, dn_sect, attr_sk, attr_sect, attribs,
 890                         chtype);
 891     if (!i)
 892         goto err;
 893
 894     if (!X509_REQ_set_pubkey(req, pkey))
 895         goto err;
 896
 897     ret = 1;
 898  err:
 899     return (ret);
 900 }
 901
 902 /*
 903  * subject is expected to be in the format /type0=value0/type1=value1/type2=...
 904  * where characters may be escaped by \
 905  */
 906 static int build_subject(X509_REQ *req, const char *subject, unsigned long chtype,
 907                          int multirdn)
 908 {
 909     X509_NAME *n;
 910
 911     if ((n = parse_name(subject, chtype, multirdn)) == NULL)
 912         return 0;
 913
 914     if (!X509_REQ_set_subject_name(req, n)) {
 915         X509_NAME_free(n);
 916         return 0;
 917     }
 918     X509_NAME_free(n);
 919     return 1;
 920 }
 921
 922 static int prompt_info(X509_REQ *req,
 923                        STACK_OF(CONF_VALUE) *dn_sk, const char *dn_sect,
 924                        STACK_OF(CONF_VALUE) *attr_sk, const char *attr_sect,
 925                        int attribs, unsigned long chtype)
 926 {
 927     int i;
 928     char *p, *q;
 929     char buf[100];
 930     int nid, mval;
 931     long n_min, n_max;
 932     char *type, *value;
 933     const char *def;
 934     CONF_VALUE *v;
 935     X509_NAME *subj;
 936     subj = X509_REQ_get_subject_name(req);
 937
 938     if (!batch) {
 939         BIO_printf(bio_err,
 940                    "You are about to be asked to enter information that will be incorporated\n");
 941         BIO_printf(bio_err, "into your certificate request.\n");
 942         BIO_printf(bio_err,
 943                    "What you are about to enter is what is called a Distinguished Name or a DN.\n");
 944         BIO_printf(bio_err,
 945                    "There are quite a few fields but you can leave some blank\n");
 946         BIO_printf(bio_err,
 947                    "For some fields there will be a default value,\n");
 948         BIO_printf(bio_err,
 949                    "If you enter '.', the field will be left blank.\n");
 950         BIO_printf(bio_err, "-----\n");
 951     }
 952
 953     if (sk_CONF_VALUE_num(dn_sk)) {
 954         i = -1;
 955  start:
 956         for ( ; ; ) {
 957             i++;
 958             if (sk_CONF_VALUE_num(dn_sk) <= i)
 959                 break;
 960
 961             v = sk_CONF_VALUE_value(dn_sk, i);
 962             p = q = NULL;
 963             type = v->name;
 964             if (!check_end(type, "_min") || !check_end(type, "_max") ||
 965                 !check_end(type, "_default") || !check_end(type, "_value"))
 966                 continue;
 967             /*
 968              * Skip past any leading X. X: X, etc to allow for multiple
 969              * instances
 970              */
 971             for (p = v->name; *p; p++)
 972                 if ((*p == ':') || (*p == ',') || (*p == '.')) {
 973                     p++;
 974                     if (*p)
 975                         type = p;
 976                     break;
 977                 }
 978             if (*type == '+') {
 979                 mval = -1;
 980                 type++;
 981             } else {
 982                 mval = 0;
 983             }
 984             /* If OBJ not recognised ignore it */
 985             if ((nid = OBJ_txt2nid(type)) == NID_undef)
 986                 goto start;
 987             if (BIO_snprintf(buf, sizeof buf, "%s_default", v->name)
 988                 >= (int)sizeof(buf)) {
 989                 BIO_printf(bio_err, "Name '%s' too long\n", v->name);
 990                 return 0;
 991             }
 992
 993             if ((def = NCONF_get_string(req_conf, dn_sect, buf)) == NULL) {
 994                 ERR_clear_error();
 995                 def = "";
 996             }
 997
 998             BIO_snprintf(buf, sizeof buf, "%s_value", v->name);
 999             if ((value = NCONF_get_string(req_conf, dn_sect, buf)) == NULL) {
1000                 ERR_clear_error();
1001                 value = NULL;
1002             }
1003
1004             BIO_snprintf(buf, sizeof buf, "%s_min", v->name);
1005             if (!NCONF_get_number(req_conf, dn_sect, buf, &n_min)) {
1006                 ERR_clear_error();
1007                 n_min = -1;
1008             }
1009
1010             BIO_snprintf(buf, sizeof buf, "%s_max", v->name);
1011             if (!NCONF_get_number(req_conf, dn_sect, buf, &n_max)) {
1012                 ERR_clear_error();
1013                 n_max = -1;
1014             }
1015
1016             if (!add_DN_object(subj, v->value, def, value, nid,
1017                                n_min, n_max, chtype, mval))
1018                 return 0;
1019         }
1020         if (X509_NAME_entry_count(subj) == 0) {
1021             BIO_printf(bio_err,
1022                        "error, no objects specified in config file\n");
1023             return 0;
1024         }
1025
1026         if (attribs) {
1027             if ((attr_sk != NULL) && (sk_CONF_VALUE_num(attr_sk) > 0)
1028                 && (!batch)) {
1029                 BIO_printf(bio_err,
1030                            "\nPlease enter the following 'extra' attributes\n");
1031                 BIO_printf(bio_err,
1032                            "to be sent with your certificate request\n");
1033             }
1034
1035             i = -1;
1036  start2:
1037             for ( ; ; ) {
1038                 i++;
1039                 if ((attr_sk == NULL) || (sk_CONF_VALUE_num(attr_sk) <= i))
1040                     break;
1041
1042                 v = sk_CONF_VALUE_value(attr_sk, i);
1043                 type = v->name;
1044                 if ((nid = OBJ_txt2nid(type)) == NID_undef)
1045                     goto start2;
1046
1047                 if (BIO_snprintf(buf, sizeof buf, "%s_default", type)
1048                     >= (int)sizeof(buf)) {
1049                     BIO_printf(bio_err, "Name '%s' too long\n", v->name);
1050                     return 0;
1051                 }
1052
1053                 if ((def = NCONF_get_string(req_conf, attr_sect, buf))
1054                     == NULL) {
1055                     ERR_clear_error();
1056                     def = "";
1057                 }
1058
1059                 BIO_snprintf(buf, sizeof buf, "%s_value", type);
1060                 if ((value = NCONF_get_string(req_conf, attr_sect, buf))
1061                     == NULL) {
1062                     ERR_clear_error();
1063                     value = NULL;
1064                 }
1065
1066                 BIO_snprintf(buf, sizeof buf, "%s_min", type);
1067                 if (!NCONF_get_number(req_conf, attr_sect, buf, &n_min)) {
1068                     ERR_clear_error();
1069                     n_min = -1;
1070                 }
1071
1072                 BIO_snprintf(buf, sizeof buf, "%s_max", type);
1073                 if (!NCONF_get_number(req_conf, attr_sect, buf, &n_max)) {
1074                     ERR_clear_error();
1075                     n_max = -1;
1076                 }
1077
1078                 if (!add_attribute_object(req,
1079                                           v->value, def, value, nid, n_min,
1080                                           n_max, chtype))
1081                     return 0;
1082             }
1083         }
1084     } else {
1085         BIO_printf(bio_err, "No template, please set one up.\n");
1086         return 0;
1087     }
1088
1089     return 1;
1090
1091 }
1092
1093 static int auto_info(X509_REQ *req, STACK_OF(CONF_VALUE) *dn_sk,
1094                      STACK_OF(CONF_VALUE) *attr_sk, int attribs,
1095                      unsigned long chtype)
1096 {
1097     int i, spec_char, plus_char;
1098     char *p, *q;
1099     char *type;
1100     CONF_VALUE *v;
1101     X509_NAME *subj;
1102
1103     subj = X509_REQ_get_subject_name(req);
1104
1105     for (i = 0; i < sk_CONF_VALUE_num(dn_sk); i++) {
1106         int mval;
1107         v = sk_CONF_VALUE_value(dn_sk, i);
1108         p = q = NULL;
1109         type = v->name;
1110         /*
1111          * Skip past any leading X. X: X, etc to allow for multiple instances
1112          */
1113         for (p = v->name; *p; p++) {
1114 #ifndef CHARSET_EBCDIC
1115             spec_char = ((*p == ':') || (*p == ',') || (*p == '.'));
1116 #else
1117             spec_char = ((*p == os_toascii[':']) || (*p == os_toascii[','])
1118                     || (*p == os_toascii['.']));
1119 #endif
1120             if (spec_char) {
1121                 p++;
1122                 if (*p)
1123                     type = p;
1124                 break;
1125             }
1126         }
1127 #ifndef CHARSET_EBCDIC
1128         plus_char = (*type == '+');
1129 #else
1130         plus_char = (*type == os_toascii['+']);
1131 #endif
1132         if (plus_char) {
1133             type++;
1134             mval = -1;
1135         } else {
1136             mval = 0;
1137         }
1138         if (!X509_NAME_add_entry_by_txt(subj, type, chtype,
1139                                         (unsigned char *)v->value, -1, -1,
1140                                         mval))
1141             return 0;
1142
1143     }
1144
1145     if (!X509_NAME_entry_count(subj)) {
1146         BIO_printf(bio_err, "error, no objects specified in config file\n");
1147         return 0;
1148     }
1149     if (attribs) {
1150         for (i = 0; i < sk_CONF_VALUE_num(attr_sk); i++) {
1151             v = sk_CONF_VALUE_value(attr_sk, i);
1152             if (!X509_REQ_add1_attr_by_txt(req, v->name, chtype,
1153                                            (unsigned char *)v->value, -1))
1154                 return 0;
1155         }
1156     }
1157     return 1;
1158 }
1159
1160 static int add_DN_object(X509_NAME *n, char *text, const char *def,
1161                          char *value, int nid, int n_min, int n_max,
1162                          unsigned long chtype, int mval)
1163 {
1164     int i, ret = 0;
1165     char buf[1024];
1166  start:
1167     if (!batch)
1168         BIO_printf(bio_err, "%s [%s]:", text, def);
1169     (void)BIO_flush(bio_err);
1170     if (value != NULL) {
1171         OPENSSL_strlcpy(buf, value, sizeof buf);
1172         OPENSSL_strlcat(buf, "\n", sizeof buf);
1173         BIO_printf(bio_err, "%s\n", value);
1174     } else {
1175         buf[0] = '\0';
1176         if (!batch) {
1177             if (!fgets(buf, sizeof buf, stdin))
1178                 return 0;
1179         } else {
1180             buf[0] = '\n';
1181             buf[1] = '\0';
1182         }
1183     }
1184
1185     if (buf[0] == '\0')
1186         return 0;
1187     if (buf[0] == '\n') {
1188         if ((def == NULL) || (def[0] == '\0'))
1189             return 1;
1190         OPENSSL_strlcpy(buf, def, sizeof buf);
1191         OPENSSL_strlcat(buf, "\n", sizeof buf);
1192     } else if ((buf[0] == '.') && (buf[1] == '\n')) {
1193         return 1;
1194     }
1195
1196     i = strlen(buf);
1197     if (buf[i - 1] != '\n') {
1198         BIO_printf(bio_err, "weird input :-(\n");
1199         return 0;
1200     }
1201     buf[--i] = '\0';
1202 #ifdef CHARSET_EBCDIC
1203     ebcdic2ascii(buf, buf, i);
1204 #endif
1205     if (!req_check_len(i, n_min, n_max)) {
1206         if (batch || value)
1207             return 0;
1208         goto start;
1209     }
1210
1211     if (!X509_NAME_add_entry_by_NID(n, nid, chtype,
1212                                     (unsigned char *)buf, -1, -1, mval))
1213         goto err;
1214     ret = 1;
1215  err:
1216     return (ret);
1217 }
1218
1219 static int add_attribute_object(X509_REQ *req, char *text, const char *def,
1220                                 char *value, int nid, int n_min,
1221                                 int n_max, unsigned long chtype)
1222 {
1223     int i;
1224     static char buf[1024];
1225
1226  start:
1227     if (!batch)
1228         BIO_printf(bio_err, "%s [%s]:", text, def);
1229     (void)BIO_flush(bio_err);
1230     if (value != NULL) {
1231         OPENSSL_strlcpy(buf, value, sizeof buf);
1232         OPENSSL_strlcat(buf, "\n", sizeof buf);
1233         BIO_printf(bio_err, "%s\n", value);
1234     } else {
1235         buf[0] = '\0';
1236         if (!batch) {
1237             if (!fgets(buf, sizeof buf, stdin))
1238                 return 0;
1239         } else {
1240             buf[0] = '\n';
1241             buf[1] = '\0';
1242         }
1243     }
1244
1245     if (buf[0] == '\0')
1246         return 0;
1247     if (buf[0] == '\n') {
1248         if ((def == NULL) || (def[0] == '\0'))
1249             return 1;
1250         OPENSSL_strlcpy(buf, def, sizeof buf);
1251         OPENSSL_strlcat(buf, "\n", sizeof buf);
1252     } else if ((buf[0] == '.') && (buf[1] == '\n')) {
1253         return 1;
1254     }
1255
1256     i = strlen(buf);
1257     if (buf[i - 1] != '\n') {
1258         BIO_printf(bio_err, "weird input :-(\n");
1259         return 0;
1260     }
1261     buf[--i] = '\0';
1262 #ifdef CHARSET_EBCDIC
1263     ebcdic2ascii(buf, buf, i);
1264 #endif
1265     if (!req_check_len(i, n_min, n_max)) {
1266         if (batch || value)
1267             return 0;
1268         goto start;
1269     }
1270
1271     if (!X509_REQ_add1_attr_by_NID(req, nid, chtype,
1272                                    (unsigned char *)buf, -1)) {
1273         BIO_printf(bio_err, "Error adding attribute\n");
1274         ERR_print_errors(bio_err);
1275         goto err;
1276     }
1277
1278     return (1);
1279  err:
1280     return (0);
1281 }
1282
1283 static int req_check_len(int len, int n_min, int n_max)
1284 {
1285     if ((n_min > 0) && (len < n_min)) {
1286         BIO_printf(bio_err,
1287                    "string is too short, it needs to be at least %d bytes long\n",
1288                    n_min);
1289         return (0);
1290     }
1291     if ((n_max >= 0) && (len > n_max)) {
1292         BIO_printf(bio_err,
1293                    "string is too long, it needs to be no more than %d bytes long\n",
1294                    n_max);
1295         return (0);
1296     }
1297     return (1);
1298 }
1299
1300 /* Check if the end of a string matches 'end' */
1301 static int check_end(const char *str, const char *end)
1302 {
1303     int elen, slen;
1304     const char *tmp;
1305     elen = strlen(end);
1306     slen = strlen(str);
1307     if (elen > slen)
1308         return 1;
1309     tmp = str + slen - elen;
1310     return strcmp(tmp, end);
1311 }
1312
1313 static EVP_PKEY_CTX *set_keygen_ctx(const char *gstr,
1314                                     int *pkey_type, long *pkeylen,
1315                                     char **palgnam, ENGINE *keygen_engine)
1316 {
1317     EVP_PKEY_CTX *gctx = NULL;
1318     EVP_PKEY *param = NULL;
1319     long keylen = -1;
1320     BIO *pbio = NULL;
1321     const char *paramfile = NULL;
1322
1323     if (gstr == NULL) {
1324         *pkey_type = EVP_PKEY_RSA;
1325         keylen = *pkeylen;
1326     } else if (gstr[0] >= '0' && gstr[0] <= '9') {
1327         *pkey_type = EVP_PKEY_RSA;
1328         keylen = atol(gstr);
1329         *pkeylen = keylen;
1330     } else if (strncmp(gstr, "param:", 6) == 0) {
1331         paramfile = gstr + 6;
1332     } else {
1333         const char *p = strchr(gstr, ':');
1334         int len;
1335         ENGINE *tmpeng;
1336         const EVP_PKEY_ASN1_METHOD *ameth;
1337
1338         if (p != NULL)
1339             len = p - gstr;
1340         else
1341             len = strlen(gstr);
1342         /*
1343          * The lookup of a the string will cover all engines so keep a note
1344          * of the implementation.
1345          */
1346
1347         ameth = EVP_PKEY_asn1_find_str(&tmpeng, gstr, len);
1348
1349         if (ameth == NULL) {
1350             BIO_printf(bio_err, "Unknown algorithm %.*s\n", len, gstr);
1351             return NULL;
1352         }
1353
1354         EVP_PKEY_asn1_get0_info(NULL, pkey_type, NULL, NULL, NULL, ameth);
1355 #ifndef OPENSSL_NO_ENGINE
1356         ENGINE_finish(tmpeng);
1357 #endif
1358         if (*pkey_type == EVP_PKEY_RSA) {
1359             if (p != NULL) {
1360                 keylen = atol(p + 1);
1361                 *pkeylen = keylen;
1362             } else {
1363                 keylen = *pkeylen;
1364             }
1365         } else if (p != NULL) {
1366             paramfile = p + 1;
1367         }
1368     }
1369
1370     if (paramfile != NULL) {
1371         pbio = BIO_new_file(paramfile, "r");
1372         if (pbio == NULL) {
1373             BIO_printf(bio_err, "Can't open parameter file %s\n", paramfile);
1374             return NULL;
1375         }
1376         param = PEM_read_bio_Parameters(pbio, NULL);
1377
1378         if (param == NULL) {
1379             X509 *x;
1380
1381             (void)BIO_reset(pbio);
1382             x = PEM_read_bio_X509(pbio, NULL, NULL, NULL);
1383             if (x != NULL) {
1384                 param = X509_get_pubkey(x);
1385                 X509_free(x);
1386             }
1387         }
1388
1389         BIO_free(pbio);
1390
1391         if (param == NULL) {
1392             BIO_printf(bio_err, "Error reading parameter file %s\n", paramfile);
1393             return NULL;
1394         }
1395         if (*pkey_type == -1) {
1396             *pkey_type = EVP_PKEY_id(param);
1397         } else if (*pkey_type != EVP_PKEY_base_id(param)) {
1398             BIO_printf(bio_err, "Key Type does not match parameters\n");
1399             EVP_PKEY_free(param);
1400             return NULL;
1401         }
1402     }
1403
1404     if (palgnam != NULL) {
1405         const EVP_PKEY_ASN1_METHOD *ameth;
1406         ENGINE *tmpeng;
1407         const char *anam;
1408
1409         ameth = EVP_PKEY_asn1_find(&tmpeng, *pkey_type);
1410         if (ameth == NULL) {
1411             BIO_puts(bio_err, "Internal error: can't find key algorithm\n");
1412             return NULL;
1413         }
1414         EVP_PKEY_asn1_get0_info(NULL, NULL, NULL, NULL, &anam, ameth);
1415         *palgnam = OPENSSL_strdup(anam);
1416 #ifndef OPENSSL_NO_ENGINE
1417         ENGINE_finish(tmpeng);
1418 #endif
1419     }
1420
1421     if (param != NULL) {
1422         gctx = EVP_PKEY_CTX_new(param, keygen_engine);
1423         *pkeylen = EVP_PKEY_bits(param);
1424         EVP_PKEY_free(param);
1425     } else {
1426         gctx = EVP_PKEY_CTX_new_id(*pkey_type, keygen_engine);
1427     }
1428
1429     if (gctx == NULL) {
1430         BIO_puts(bio_err, "Error allocating keygen context\n");
1431         ERR_print_errors(bio_err);
1432         return NULL;
1433     }
1434
1435     if (EVP_PKEY_keygen_init(gctx) <= 0) {
1436         BIO_puts(bio_err, "Error initializing keygen context\n");
1437         ERR_print_errors(bio_err);
1438         EVP_PKEY_CTX_free(gctx);
1439         return NULL;
1440     }
1441 #ifndef OPENSSL_NO_RSA
1442     if ((*pkey_type == EVP_PKEY_RSA) && (keylen != -1)) {
1443         if (EVP_PKEY_CTX_set_rsa_keygen_bits(gctx, keylen) <= 0) {
1444             BIO_puts(bio_err, "Error setting RSA keysize\n");
1445             ERR_print_errors(bio_err);
1446             EVP_PKEY_CTX_free(gctx);
1447             return NULL;
1448         }
1449     }
1450 #endif
1451
1452     return gctx;
1453 }
1454
1455 static int genpkey_cb(EVP_PKEY_CTX *ctx)
1456 {
1457     char c = '*';
1458     BIO *b = EVP_PKEY_CTX_get_app_data(ctx);
1459     int p;
1460     p = EVP_PKEY_CTX_get_keygen_info(ctx, 0);
1461     if (p == 0)
1462         c = '.';
1463     if (p == 1)
1464         c = '+';
1465     if (p == 2)
1466         c = '*';
1467     if (p == 3)
1468         c = '\n';
1469     BIO_write(b, &c, 1);
1470     (void)BIO_flush(b);
1471     return 1;
1472 }
1473
1474 static int do_sign_init(EVP_MD_CTX *ctx, EVP_PKEY *pkey,
1475                         const EVP_MD *md, STACK_OF(OPENSSL_STRING) *sigopts)
1476 {
1477     EVP_PKEY_CTX *pkctx = NULL;
1478     int i;
1479
1480     if (ctx == NULL)
1481         return 0;
1482     if (!EVP_DigestSignInit(ctx, &pkctx, md, NULL, pkey))
1483         return 0;
1484     for (i = 0; i < sk_OPENSSL_STRING_num(sigopts); i++) {
1485         char *sigopt = sk_OPENSSL_STRING_value(sigopts, i);
1486         if (pkey_ctrl_string(pkctx, sigopt) <= 0) {
1487             BIO_printf(bio_err, "parameter error \"%s\"\n", sigopt);
1488             ERR_print_errors(bio_err);
1489             return 0;
1490         }
1491     }
1492     return 1;
1493 }
1494
1495 int do_X509_sign(X509 *x, EVP_PKEY *pkey, const EVP_MD *md,
1496                  STACK_OF(OPENSSL_STRING) *sigopts)
1497 {
1498     int rv;
1499     EVP_MD_CTX *mctx = EVP_MD_CTX_new();
1500
1501     rv = do_sign_init(mctx, pkey, md, sigopts);
1502     if (rv > 0)
1503         rv = X509_sign_ctx(x, mctx);
1504     EVP_MD_CTX_free(mctx);
1505     return rv > 0 ? 1 : 0;
1506 }
1507
1508 int do_X509_REQ_sign(X509_REQ *x, EVP_PKEY *pkey, const EVP_MD *md,
1509                      STACK_OF(OPENSSL_STRING) *sigopts)
1510 {
1511     int rv;
1512     EVP_MD_CTX *mctx = EVP_MD_CTX_new();
1513     rv = do_sign_init(mctx, pkey, md, sigopts);
1514     if (rv > 0)
1515         rv = X509_REQ_sign_ctx(x, mctx);
1516     EVP_MD_CTX_free(mctx);
1517     return rv > 0 ? 1 : 0;
1518 }
1519
1520 int do_X509_CRL_sign(X509_CRL *x, EVP_PKEY *pkey, const EVP_MD *md,
1521                      STACK_OF(OPENSSL_STRING) *sigopts)
1522 {
1523     int rv;
1524     EVP_MD_CTX *mctx = EVP_MD_CTX_new();
1525     rv = do_sign_init(mctx, pkey, md, sigopts);
1526     if (rv > 0)
1527         rv = X509_CRL_sign_ctx(x, mctx);
1528     EVP_MD_CTX_free(mctx);
1529     return rv > 0 ? 1 : 0;
1530 }