apps/req.c

   1 /*
   2  * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the OpenSSL license (the "License").  You may not use
   5  * this file except in compliance with the License.  You can obtain a copy
   6  * in the file LICENSE in the source distribution or at
   7  * https://www.openssl.org/source/license.html
   8  */
   9
  10 #include <stdio.h>
  11 #include <stdlib.h>
  12 #include <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_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, 'p', "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     {"", OPT_MD, '-', "Any supported digest"},
 130 #ifndef OPENSSL_NO_ENGINE
 131     {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
 132     {"keygen_engine", OPT_KEYGEN_ENGINE, 's',
 133      "Specify engine to be used for key generation operations"},
 134 #endif
 135     {NULL}
 136 };
 137
 138 int req_main(int argc, char **argv)
 139 {
 140     ASN1_INTEGER *serial = NULL;
 141     BIO *in = NULL, *out = NULL;
 142     ENGINE *e = NULL, *gen_eng = NULL;
 143     EVP_PKEY *pkey = NULL;
 144     EVP_PKEY_CTX *genctx = NULL;
 145     STACK_OF(OPENSSL_STRING) *pkeyopts = NULL, *sigopts = NULL;
 146     X509 *x509ss = NULL;
 147     X509_REQ *req = NULL;
 148     const EVP_CIPHER *cipher = NULL;
 149     const EVP_MD *md_alg = NULL, *digest = NULL;
 150     char *extensions = NULL, *infile = NULL;
 151     char *outfile = NULL, *keyfile = NULL, *inrand = NULL;
 152     char *keyalgstr = NULL, *p, *prog, *passargin = NULL, *passargout = NULL;
 153     char *passin = NULL, *passout = NULL;
 154     char *nofree_passin = NULL, *nofree_passout = NULL;
 155     char *req_exts = NULL, *subj = NULL;
 156     char *template = default_config_file, *keyout = NULL;
 157     const char *keyalg = NULL;
 158     OPTION_CHOICE o;
 159     int ret = 1, x509 = 0, days = 30, i = 0, newreq = 0, verbose = 0;
 160     int pkey_type = -1, private = 0;
 161     int informat = FORMAT_PEM, outformat = FORMAT_PEM, keyform = FORMAT_PEM;
 162     int modulus = 0, multirdn = 0, verify = 0, noout = 0, text = 0;
 163     int nodes = 0, newhdr = 0, subject = 0, pubkey = 0;
 164     long newkey = -1;
 165     unsigned long chtype = MBSTRING_ASC, nmflag = 0, reqflag = 0;
 166     char nmflag_set = 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             nmflag_set = 1;
 280             if (!set_name_ex(&nmflag, opt_arg()))
 281                 goto opthelp;
 282             break;
 283         case OPT_REQOPT:
 284             if (!set_cert_ex(&reqflag, opt_arg()))
 285                 goto opthelp;
 286             break;
 287         case OPT_TEXT:
 288             text = 1;
 289             break;
 290         case OPT_X509:
 291             x509 = 1;
 292             newreq = 1;
 293             break;
 294         case OPT_DAYS:
 295             days = atoi(opt_arg());
 296             break;
 297         case OPT_SET_SERIAL:
 298             if (serial != NULL) {
 299                 BIO_printf(bio_err, "Serial number supplied twice\n");
 300                 goto opthelp;
 301             }
 302             serial = s2i_ASN1_INTEGER(NULL, opt_arg());
 303             if (serial == NULL)
 304                 goto opthelp;
 305             break;
 306         case OPT_SUBJECT:
 307             subject = 1;
 308             break;
 309         case OPT_SUBJ:
 310             subj = opt_arg();
 311             break;
 312         case OPT_MULTIVALUE_RDN:
 313             multirdn = 1;
 314             break;
 315         case OPT_EXTENSIONS:
 316             extensions = opt_arg();
 317             break;
 318         case OPT_REQEXTS:
 319             req_exts = opt_arg();
 320             break;
 321         case OPT_MD:
 322             if (!opt_md(opt_unknown(), &md_alg))
 323                 goto opthelp;
 324             digest = md_alg;
 325             break;
 326         }
 327     }
 328     argc = opt_num_rest();
 329     if (argc != 0)
 330         goto opthelp;
 331
 332     if (!nmflag_set)
 333         nmflag = XN_FLAG_ONELINE;
 334
 335     /* TODO: simplify this as pkey is still always NULL here */
 336     private = newreq && (pkey == NULL) ? 1 : 0;
 337
 338     if (!app_passwd(passargin, passargout, &passin, &passout)) {
 339         BIO_printf(bio_err, "Error getting passwords\n");
 340         goto end;
 341     }
 342
 343     if (verbose)
 344         BIO_printf(bio_err, "Using configuration from %s\n", template);
 345     req_conf = app_load_config(template);
 346     if (template != default_config_file && !app_load_modules(req_conf))
 347         goto end;
 348
 349     if (req_conf != NULL) {
 350         p = NCONF_get_string(req_conf, NULL, "oid_file");
 351         if (p == NULL)
 352             ERR_clear_error();
 353         if (p != NULL) {
 354             BIO *oid_bio;
 355
 356             oid_bio = BIO_new_file(p, "r");
 357             if (oid_bio == NULL) {
 358                 /*-
 359                 BIO_printf(bio_err,"problems opening %s for extra oid's\n",p);
 360                 ERR_print_errors(bio_err);
 361                 */
 362             } else {
 363                 OBJ_create_objects(oid_bio);
 364                 BIO_free(oid_bio);
 365             }
 366         }
 367     }
 368     if (!add_oid_section(req_conf))
 369         goto end;
 370
 371     if (md_alg == NULL) {
 372         p = NCONF_get_string(req_conf, SECTION, "default_md");
 373         if (p == NULL)
 374             ERR_clear_error();
 375         else {
 376             if (!opt_md(p, &md_alg))
 377                 goto opthelp;
 378             digest = md_alg;
 379         }
 380     }
 381
 382     if (!extensions) {
 383         extensions = NCONF_get_string(req_conf, SECTION, V3_EXTENSIONS);
 384         if (!extensions)
 385             ERR_clear_error();
 386     }
 387     if (extensions) {
 388         /* Check syntax of file */
 389         X509V3_CTX ctx;
 390         X509V3_set_ctx_test(&ctx);
 391         X509V3_set_nconf(&ctx, req_conf);
 392         if (!X509V3_EXT_add_nconf(req_conf, &ctx, extensions, NULL)) {
 393             BIO_printf(bio_err,
 394                        "Error Loading extension section %s\n", extensions);
 395             goto end;
 396         }
 397     }
 398
 399     if (passin == NULL) {
 400         passin = nofree_passin =
 401             NCONF_get_string(req_conf, SECTION, "input_password");
 402         if (passin == NULL)
 403             ERR_clear_error();
 404     }
 405
 406     if (passout == NULL) {
 407         passout = nofree_passout =
 408             NCONF_get_string(req_conf, SECTION, "output_password");
 409         if (passout == NULL)
 410             ERR_clear_error();
 411     }
 412
 413     p = NCONF_get_string(req_conf, SECTION, STRING_MASK);
 414     if (!p)
 415         ERR_clear_error();
 416
 417     if (p && !ASN1_STRING_set_default_mask_asc(p)) {
 418         BIO_printf(bio_err, "Invalid global string mask setting %s\n", p);
 419         goto end;
 420     }
 421
 422     if (chtype != MBSTRING_UTF8) {
 423         p = NCONF_get_string(req_conf, SECTION, UTF8_IN);
 424         if (!p)
 425             ERR_clear_error();
 426         else if (strcmp(p, "yes") == 0)
 427             chtype = MBSTRING_UTF8;
 428     }
 429
 430     if (!req_exts) {
 431         req_exts = NCONF_get_string(req_conf, SECTION, REQ_EXTENSIONS);
 432         if (!req_exts)
 433             ERR_clear_error();
 434     }
 435     if (req_exts) {
 436         /* Check syntax of file */
 437         X509V3_CTX ctx;
 438         X509V3_set_ctx_test(&ctx);
 439         X509V3_set_nconf(&ctx, req_conf);
 440         if (!X509V3_EXT_add_nconf(req_conf, &ctx, req_exts, NULL)) {
 441             BIO_printf(bio_err,
 442                        "Error Loading request extension section %s\n",
 443                        req_exts);
 444             goto end;
 445         }
 446     }
 447
 448     if (keyfile != NULL) {
 449         pkey = load_key(keyfile, keyform, 0, passin, e, "Private Key");
 450         if (!pkey) {
 451             /* load_key() has already printed an appropriate message */
 452             goto end;
 453         } else {
 454             char *randfile = NCONF_get_string(req_conf, SECTION, "RANDFILE");
 455             if (randfile == NULL)
 456                 ERR_clear_error();
 457             app_RAND_load_file(randfile, 0);
 458         }
 459     }
 460
 461     if (newreq && (pkey == NULL)) {
 462         char *randfile = NCONF_get_string(req_conf, SECTION, "RANDFILE");
 463         if (randfile == NULL)
 464             ERR_clear_error();
 465         app_RAND_load_file(randfile, 0);
 466         if (inrand)
 467             app_RAND_load_files(inrand);
 468
 469         if (!NCONF_get_number(req_conf, SECTION, BITS, &newkey)) {
 470             newkey = DEFAULT_KEY_LENGTH;
 471         }
 472
 473         if (keyalg) {
 474             genctx = set_keygen_ctx(keyalg, &pkey_type, &newkey,
 475                                     &keyalgstr, gen_eng);
 476             if (!genctx)
 477                 goto end;
 478         }
 479
 480         if (newkey < MIN_KEY_LENGTH
 481             && (pkey_type == EVP_PKEY_RSA || pkey_type == EVP_PKEY_DSA)) {
 482             BIO_printf(bio_err, "private key length is too short,\n");
 483             BIO_printf(bio_err, "it needs to be at least %d bits, not %ld\n",
 484                        MIN_KEY_LENGTH, newkey);
 485             goto end;
 486         }
 487
 488         if (!genctx) {
 489             genctx = set_keygen_ctx(NULL, &pkey_type, &newkey,
 490                                     &keyalgstr, gen_eng);
 491             if (!genctx)
 492                 goto end;
 493         }
 494
 495         if (pkeyopts) {
 496             char *genopt;
 497             for (i = 0; i < sk_OPENSSL_STRING_num(pkeyopts); i++) {
 498                 genopt = sk_OPENSSL_STRING_value(pkeyopts, i);
 499                 if (pkey_ctrl_string(genctx, genopt) <= 0) {
 500                     BIO_printf(bio_err, "parameter error \"%s\"\n", genopt);
 501                     ERR_print_errors(bio_err);
 502                     goto end;
 503                 }
 504             }
 505         }
 506
 507         if (pkey_type == EVP_PKEY_EC) {
 508             BIO_printf(bio_err, "Generating an EC private key\n");
 509         } else {
 510             BIO_printf(bio_err, "Generating a %ld bit %s private key\n",
 511                        newkey, keyalgstr);
 512         }
 513
 514         EVP_PKEY_CTX_set_cb(genctx, genpkey_cb);
 515         EVP_PKEY_CTX_set_app_data(genctx, bio_err);
 516
 517         if (EVP_PKEY_keygen(genctx, &pkey) <= 0) {
 518             BIO_puts(bio_err, "Error Generating Key\n");
 519             goto end;
 520         }
 521
 522         EVP_PKEY_CTX_free(genctx);
 523         genctx = NULL;
 524
 525         app_RAND_write_file(randfile);
 526
 527         if (keyout == NULL) {
 528             keyout = NCONF_get_string(req_conf, SECTION, KEYFILE);
 529             if (keyout == NULL)
 530                 ERR_clear_error();
 531         }
 532
 533         if (keyout == NULL)
 534             BIO_printf(bio_err, "writing new private key to stdout\n");
 535         else
 536             BIO_printf(bio_err, "writing new private key to '%s'\n", keyout);
 537         out = bio_open_owner(keyout, outformat, private);
 538         if (out == NULL)
 539             goto end;
 540
 541         p = NCONF_get_string(req_conf, SECTION, "encrypt_rsa_key");
 542         if (p == NULL) {
 543             ERR_clear_error();
 544             p = NCONF_get_string(req_conf, SECTION, "encrypt_key");
 545             if (p == NULL)
 546                 ERR_clear_error();
 547         }
 548         if ((p != NULL) && (strcmp(p, "no") == 0))
 549             cipher = NULL;
 550         if (nodes)
 551             cipher = NULL;
 552
 553         i = 0;
 554  loop:
 555         assert(private);
 556         if (!PEM_write_bio_PrivateKey(out, pkey, cipher,
 557                                       NULL, 0, NULL, passout)) {
 558             if ((ERR_GET_REASON(ERR_peek_error()) ==
 559                  PEM_R_PROBLEMS_GETTING_PASSWORD) && (i < 3)) {
 560                 ERR_clear_error();
 561                 i++;
 562                 goto loop;
 563             }
 564             goto end;
 565         }
 566         BIO_free(out);
 567         out = NULL;
 568         BIO_printf(bio_err, "-----\n");
 569     }
 570
 571     if (!newreq) {
 572         in = bio_open_default(infile, 'r', informat);
 573         if (in == NULL)
 574             goto end;
 575
 576         if (informat == FORMAT_ASN1)
 577             req = d2i_X509_REQ_bio(in, NULL);
 578         else
 579             req = PEM_read_bio_X509_REQ(in, NULL, NULL, NULL);
 580         if (req == NULL) {
 581             BIO_printf(bio_err, "unable to load X509 request\n");
 582             goto end;
 583         }
 584     }
 585
 586     if (newreq) {
 587         if (pkey == NULL) {
 588             BIO_printf(bio_err, "you need to specify a private key\n");
 589             goto end;
 590         }
 591
 592         if (req == NULL) {
 593             req = X509_REQ_new();
 594             if (req == NULL) {
 595                 goto end;
 596             }
 597
 598             i = make_REQ(req, pkey, subj, multirdn, !x509, chtype);
 599             subj = NULL;        /* done processing '-subj' option */
 600             if (!i) {
 601                 BIO_printf(bio_err, "problems making Certificate Request\n");
 602                 goto end;
 603             }
 604         }
 605         if (x509) {
 606             EVP_PKEY *tmppkey;
 607             X509V3_CTX ext_ctx;
 608             if ((x509ss = X509_new()) == NULL)
 609                 goto end;
 610
 611             /* Set version to V3 */
 612             if (extensions && !X509_set_version(x509ss, 2))
 613                 goto end;
 614             if (serial) {
 615                 if (!X509_set_serialNumber(x509ss, serial))
 616                     goto end;
 617             } else {
 618                 if (!rand_serial(NULL, X509_get_serialNumber(x509ss)))
 619                     goto end;
 620             }
 621
 622             if (!X509_set_issuer_name(x509ss, X509_REQ_get_subject_name(req)))
 623                 goto end;
 624             if (!set_cert_times(x509ss, NULL, NULL, days))
 625                 goto end;
 626             if (!X509_set_subject_name
 627                 (x509ss, X509_REQ_get_subject_name(req)))
 628                 goto end;
 629             tmppkey = X509_REQ_get0_pubkey(req);
 630             if (!tmppkey || !X509_set_pubkey(x509ss, tmppkey))
 631                 goto end;
 632
 633             /* Set up V3 context struct */
 634
 635             X509V3_set_ctx(&ext_ctx, x509ss, x509ss, NULL, NULL, 0);
 636             X509V3_set_nconf(&ext_ctx, req_conf);
 637
 638             /* Add extensions */
 639             if (extensions && !X509V3_EXT_add_nconf(req_conf,
 640                                                     &ext_ctx, extensions,
 641                                                     x509ss)) {
 642                 BIO_printf(bio_err, "Error Loading extension section %s\n",
 643                            extensions);
 644                 goto end;
 645             }
 646
 647             i = do_X509_sign(x509ss, pkey, digest, sigopts);
 648             if (!i) {
 649                 ERR_print_errors(bio_err);
 650                 goto end;
 651             }
 652         } else {
 653             X509V3_CTX ext_ctx;
 654
 655             /* Set up V3 context struct */
 656
 657             X509V3_set_ctx(&ext_ctx, NULL, NULL, req, NULL, 0);
 658             X509V3_set_nconf(&ext_ctx, req_conf);
 659
 660             /* Add extensions */
 661             if (req_exts && !X509V3_EXT_REQ_add_nconf(req_conf,
 662                                                       &ext_ctx, req_exts,
 663                                                       req)) {
 664                 BIO_printf(bio_err, "Error Loading extension section %s\n",
 665                            req_exts);
 666                 goto end;
 667             }
 668             i = do_X509_REQ_sign(req, pkey, digest, sigopts);
 669             if (!i) {
 670                 ERR_print_errors(bio_err);
 671                 goto end;
 672             }
 673         }
 674     }
 675
 676     if (subj && x509) {
 677         BIO_printf(bio_err, "Cannot modify certificate subject\n");
 678         goto end;
 679     }
 680
 681     if (subj && !x509) {
 682         if (verbose) {
 683             BIO_printf(bio_err, "Modifying Request's Subject\n");
 684             print_name(bio_err, "old subject=",
 685                        X509_REQ_get_subject_name(req), nmflag);
 686         }
 687
 688         if (build_subject(req, subj, chtype, multirdn) == 0) {
 689             BIO_printf(bio_err, "ERROR: cannot modify subject\n");
 690             ret = 1;
 691             goto end;
 692         }
 693
 694         if (verbose) {
 695             print_name(bio_err, "new subject=",
 696                        X509_REQ_get_subject_name(req), nmflag);
 697         }
 698     }
 699
 700     if (verify && !x509) {
 701         EVP_PKEY *tpubkey = pkey;
 702
 703         if (tpubkey == NULL) {
 704             tpubkey = X509_REQ_get0_pubkey(req);
 705             if (tpubkey == NULL)
 706                 goto end;
 707         }
 708
 709         i = X509_REQ_verify(req, tpubkey);
 710
 711         if (i < 0) {
 712             goto end;
 713         } else if (i == 0) {
 714             BIO_printf(bio_err, "verify failure\n");
 715             ERR_print_errors(bio_err);
 716         } else                  /* if (i > 0) */
 717             BIO_printf(bio_err, "verify OK\n");
 718     }
 719
 720     if (noout && !text && !modulus && !subject && !pubkey) {
 721         ret = 0;
 722         goto end;
 723     }
 724
 725     out = bio_open_default(outfile,
 726                            keyout != NULL && outfile != NULL &&
 727                            strcmp(keyout, outfile) == 0 ? 'a' : 'w',
 728                            outformat);
 729     if (out == NULL)
 730         goto end;
 731
 732     if (pubkey) {
 733         EVP_PKEY *tpubkey = X509_REQ_get0_pubkey(req);
 734
 735         if (tpubkey == NULL) {
 736             BIO_printf(bio_err, "Error getting public key\n");
 737             ERR_print_errors(bio_err);
 738             goto end;
 739         }
 740         PEM_write_bio_PUBKEY(out, tpubkey);
 741     }
 742
 743     if (text) {
 744         if (x509)
 745             X509_print_ex(out, x509ss, nmflag, reqflag);
 746         else
 747             X509_REQ_print_ex(out, req, nmflag, reqflag);
 748     }
 749
 750     if (subject) {
 751         if (x509)
 752             print_name(out, "subject=", X509_get_subject_name(x509ss),
 753                        nmflag);
 754         else
 755             print_name(out, "subject=", X509_REQ_get_subject_name(req),
 756                        nmflag);
 757     }
 758
 759     if (modulus) {
 760         EVP_PKEY *tpubkey;
 761
 762         if (x509)
 763             tpubkey = X509_get0_pubkey(x509ss);
 764         else
 765             tpubkey = X509_REQ_get0_pubkey(req);
 766         if (tpubkey == NULL) {
 767             fprintf(stdout, "Modulus=unavailable\n");
 768             goto end;
 769         }
 770         fprintf(stdout, "Modulus=");
 771 #ifndef OPENSSL_NO_RSA
 772         if (EVP_PKEY_base_id(tpubkey) == EVP_PKEY_RSA) {
 773             const BIGNUM *n;
 774             RSA_get0_key(EVP_PKEY_get0_RSA(tpubkey), &n, NULL, NULL);
 775             BN_print(out, n);
 776         } else
 777 #endif
 778             fprintf(stdout, "Wrong Algorithm type");
 779         fprintf(stdout, "\n");
 780     }
 781
 782     if (!noout && !x509) {
 783         if (outformat == FORMAT_ASN1)
 784             i = i2d_X509_REQ_bio(out, req);
 785         else if (newhdr)
 786             i = PEM_write_bio_X509_REQ_NEW(out, req);
 787         else
 788             i = PEM_write_bio_X509_REQ(out, req);
 789         if (!i) {
 790             BIO_printf(bio_err, "unable to write X509 request\n");
 791             goto end;
 792         }
 793     }
 794     if (!noout && x509 && (x509ss != NULL)) {
 795         if (outformat == FORMAT_ASN1)
 796             i = i2d_X509_bio(out, x509ss);
 797         else
 798             i = PEM_write_bio_X509(out, x509ss);
 799         if (!i) {
 800             BIO_printf(bio_err, "unable to write X509 certificate\n");
 801             goto end;
 802         }
 803     }
 804     ret = 0;
 805  end:
 806     if (ret) {
 807         ERR_print_errors(bio_err);
 808     }
 809     NCONF_free(req_conf);
 810     BIO_free(in);
 811     BIO_free_all(out);
 812     EVP_PKEY_free(pkey);
 813     EVP_PKEY_CTX_free(genctx);
 814     sk_OPENSSL_STRING_free(pkeyopts);
 815     sk_OPENSSL_STRING_free(sigopts);
 816 #ifndef OPENSSL_NO_ENGINE
 817     ENGINE_free(gen_eng);
 818 #endif
 819     OPENSSL_free(keyalgstr);
 820     X509_REQ_free(req);
 821     X509_free(x509ss);
 822     ASN1_INTEGER_free(serial);
 823     if (passin != nofree_passin)
 824         OPENSSL_free(passin);
 825     if (passout != nofree_passout)
 826         OPENSSL_free(passout);
 827     return (ret);
 828 }
 829
 830 static int make_REQ(X509_REQ *req, EVP_PKEY *pkey, char *subj, int multirdn,
 831                     int attribs, unsigned long chtype)
 832 {
 833     int ret = 0, i;
 834     char no_prompt = 0;
 835     STACK_OF(CONF_VALUE) *dn_sk, *attr_sk = NULL;
 836     char *tmp, *dn_sect, *attr_sect;
 837
 838     tmp = NCONF_get_string(req_conf, SECTION, PROMPT);
 839     if (tmp == NULL)
 840         ERR_clear_error();
 841     if ((tmp != NULL) && strcmp(tmp, "no") == 0)
 842         no_prompt = 1;
 843
 844     dn_sect = NCONF_get_string(req_conf, SECTION, DISTINGUISHED_NAME);
 845     if (dn_sect == NULL) {
 846         BIO_printf(bio_err, "unable to find '%s' in config\n",
 847                    DISTINGUISHED_NAME);
 848         goto err;
 849     }
 850     dn_sk = NCONF_get_section(req_conf, dn_sect);
 851     if (dn_sk == NULL) {
 852         BIO_printf(bio_err, "unable to get '%s' section\n", dn_sect);
 853         goto err;
 854     }
 855
 856     attr_sect = NCONF_get_string(req_conf, SECTION, ATTRIBUTES);
 857     if (attr_sect == NULL) {
 858         ERR_clear_error();
 859         attr_sk = NULL;
 860     } else {
 861         attr_sk = NCONF_get_section(req_conf, attr_sect);
 862         if (attr_sk == NULL) {
 863             BIO_printf(bio_err, "unable to get '%s' section\n", attr_sect);
 864             goto err;
 865         }
 866     }
 867
 868     /* setup version number */
 869     if (!X509_REQ_set_version(req, 0L))
 870         goto err;               /* version 1 */
 871
 872     if (subj)
 873         i = build_subject(req, subj, chtype, multirdn);
 874     else if (no_prompt)
 875         i = auto_info(req, dn_sk, attr_sk, attribs, chtype);
 876     else
 877         i = prompt_info(req, dn_sk, dn_sect, attr_sk, attr_sect, attribs,
 878                         chtype);
 879     if (!i)
 880         goto err;
 881
 882     if (!X509_REQ_set_pubkey(req, pkey))
 883         goto err;
 884
 885     ret = 1;
 886  err:
 887     return (ret);
 888 }
 889
 890 /*
 891  * subject is expected to be in the format /type0=value0/type1=value1/type2=...
 892  * where characters may be escaped by \
 893  */
 894 static int build_subject(X509_REQ *req, const char *subject, unsigned long chtype,
 895                          int multirdn)
 896 {
 897     X509_NAME *n;
 898
 899     if ((n = parse_name(subject, chtype, multirdn)) == NULL)
 900         return 0;
 901
 902     if (!X509_REQ_set_subject_name(req, n)) {
 903         X509_NAME_free(n);
 904         return 0;
 905     }
 906     X509_NAME_free(n);
 907     return 1;
 908 }
 909
 910 static int prompt_info(X509_REQ *req,
 911                        STACK_OF(CONF_VALUE) *dn_sk, const char *dn_sect,
 912                        STACK_OF(CONF_VALUE) *attr_sk, const char *attr_sect,
 913                        int attribs, unsigned long chtype)
 914 {
 915     int i;
 916     char *p, *q;
 917     char buf[100];
 918     int nid, mval;
 919     long n_min, n_max;
 920     char *type, *value;
 921     const char *def;
 922     CONF_VALUE *v;
 923     X509_NAME *subj;
 924     subj = X509_REQ_get_subject_name(req);
 925
 926     if (!batch) {
 927         BIO_printf(bio_err,
 928                    "You are about to be asked to enter information that will be incorporated\n");
 929         BIO_printf(bio_err, "into your certificate request.\n");
 930         BIO_printf(bio_err,
 931                    "What you are about to enter is what is called a Distinguished Name or a DN.\n");
 932         BIO_printf(bio_err,
 933                    "There are quite a few fields but you can leave some blank\n");
 934         BIO_printf(bio_err,
 935                    "For some fields there will be a default value,\n");
 936         BIO_printf(bio_err,
 937                    "If you enter '.', the field will be left blank.\n");
 938         BIO_printf(bio_err, "-----\n");
 939     }
 940
 941     if (sk_CONF_VALUE_num(dn_sk)) {
 942         i = -1;
 943  start:for (;;) {
 944             i++;
 945             if (sk_CONF_VALUE_num(dn_sk) <= i)
 946                 break;
 947
 948             v = sk_CONF_VALUE_value(dn_sk, i);
 949             p = q = NULL;
 950             type = v->name;
 951             if (!check_end(type, "_min") || !check_end(type, "_max") ||
 952                 !check_end(type, "_default") || !check_end(type, "_value"))
 953                 continue;
 954             /*
 955              * Skip past any leading X. X: X, etc to allow for multiple
 956              * instances
 957              */
 958             for (p = v->name; *p; p++)
 959                 if ((*p == ':') || (*p == ',') || (*p == '.')) {
 960                     p++;
 961                     if (*p)
 962                         type = p;
 963                     break;
 964                 }
 965             if (*type == '+') {
 966                 mval = -1;
 967                 type++;
 968             } else
 969                 mval = 0;
 970             /* If OBJ not recognised ignore it */
 971             if ((nid = OBJ_txt2nid(type)) == NID_undef)
 972                 goto start;
 973             if (BIO_snprintf(buf, sizeof buf, "%s_default", v->name)
 974                 >= (int)sizeof(buf)) {
 975                 BIO_printf(bio_err, "Name '%s' too long\n", v->name);
 976                 return 0;
 977             }
 978
 979             if ((def = NCONF_get_string(req_conf, dn_sect, buf)) == NULL) {
 980                 ERR_clear_error();
 981                 def = "";
 982             }
 983
 984             BIO_snprintf(buf, sizeof buf, "%s_value", v->name);
 985             if ((value = NCONF_get_string(req_conf, dn_sect, buf)) == NULL) {
 986                 ERR_clear_error();
 987                 value = NULL;
 988             }
 989
 990             BIO_snprintf(buf, sizeof buf, "%s_min", v->name);
 991             if (!NCONF_get_number(req_conf, dn_sect, buf, &n_min)) {
 992                 ERR_clear_error();
 993                 n_min = -1;
 994             }
 995
 996             BIO_snprintf(buf, sizeof buf, "%s_max", v->name);
 997             if (!NCONF_get_number(req_conf, dn_sect, buf, &n_max)) {
 998                 ERR_clear_error();
 999                 n_max = -1;
1000             }
1001
1002             if (!add_DN_object(subj, v->value, def, value, nid,
1003                                n_min, n_max, chtype, mval))
1004                 return 0;
1005         }
1006         if (X509_NAME_entry_count(subj) == 0) {
1007             BIO_printf(bio_err,
1008                        "error, no objects specified in config file\n");
1009             return 0;
1010         }
1011
1012         if (attribs) {
1013             if ((attr_sk != NULL) && (sk_CONF_VALUE_num(attr_sk) > 0)
1014                 && (!batch)) {
1015                 BIO_printf(bio_err,
1016                            "\nPlease enter the following 'extra' attributes\n");
1017                 BIO_printf(bio_err,
1018                            "to be sent with your certificate request\n");
1019             }
1020
1021             i = -1;
1022  start2:   for (;;) {
1023                 i++;
1024                 if ((attr_sk == NULL) || (sk_CONF_VALUE_num(attr_sk) <= i))
1025                     break;
1026
1027                 v = sk_CONF_VALUE_value(attr_sk, i);
1028                 type = v->name;
1029                 if ((nid = OBJ_txt2nid(type)) == NID_undef)
1030                     goto start2;
1031
1032                 if (BIO_snprintf(buf, sizeof buf, "%s_default", type)
1033                     >= (int)sizeof(buf)) {
1034                     BIO_printf(bio_err, "Name '%s' too long\n", v->name);
1035                     return 0;
1036                 }
1037
1038                 if ((def = NCONF_get_string(req_conf, attr_sect, buf))
1039                     == NULL) {
1040                     ERR_clear_error();
1041                     def = "";
1042                 }
1043
1044                 BIO_snprintf(buf, sizeof buf, "%s_value", type);
1045                 if ((value = NCONF_get_string(req_conf, attr_sect, buf))
1046                     == NULL) {
1047                     ERR_clear_error();
1048                     value = NULL;
1049                 }
1050
1051                 BIO_snprintf(buf, sizeof buf, "%s_min", type);
1052                 if (!NCONF_get_number(req_conf, attr_sect, buf, &n_min)) {
1053                     ERR_clear_error();
1054                     n_min = -1;
1055                 }
1056
1057                 BIO_snprintf(buf, sizeof buf, "%s_max", type);
1058                 if (!NCONF_get_number(req_conf, attr_sect, buf, &n_max)) {
1059                     ERR_clear_error();
1060                     n_max = -1;
1061                 }
1062
1063                 if (!add_attribute_object(req,
1064                                           v->value, def, value, nid, n_min,
1065                                           n_max, chtype))
1066                     return 0;
1067             }
1068         }
1069     } else {
1070         BIO_printf(bio_err, "No template, please set one up.\n");
1071         return 0;
1072     }
1073
1074     return 1;
1075
1076 }
1077
1078 static int auto_info(X509_REQ *req, STACK_OF(CONF_VALUE) *dn_sk,
1079                      STACK_OF(CONF_VALUE) *attr_sk, int attribs,
1080                      unsigned long chtype)
1081 {
1082     int i, spec_char, plus_char;
1083     char *p, *q;
1084     char *type;
1085     CONF_VALUE *v;
1086     X509_NAME *subj;
1087
1088     subj = X509_REQ_get_subject_name(req);
1089
1090     for (i = 0; i < sk_CONF_VALUE_num(dn_sk); i++) {
1091         int mval;
1092         v = sk_CONF_VALUE_value(dn_sk, i);
1093         p = q = NULL;
1094         type = v->name;
1095         /*
1096          * Skip past any leading X. X: X, etc to allow for multiple instances
1097          */
1098         for (p = v->name; *p; p++) {
1099 #ifndef CHARSET_EBCDIC
1100             spec_char = ((*p == ':') || (*p == ',') || (*p == '.'));
1101 #else
1102             spec_char = ((*p == os_toascii[':']) || (*p == os_toascii[','])
1103                     || (*p == os_toascii['.']));
1104 #endif
1105             if (spec_char) {
1106                 p++;
1107                 if (*p)
1108                     type = p;
1109                 break;
1110             }
1111         }
1112 #ifndef CHARSET_EBCDIC
1113         plus_char = (*type == '+');
1114 #else
1115         plus_char = (*type == os_toascii['+']);
1116 #endif
1117         if (plus_char) {
1118             type++;
1119             mval = -1;
1120         } else
1121             mval = 0;
1122         if (!X509_NAME_add_entry_by_txt(subj, type, chtype,
1123                                         (unsigned char *)v->value, -1, -1,
1124                                         mval))
1125             return 0;
1126
1127     }
1128
1129     if (!X509_NAME_entry_count(subj)) {
1130         BIO_printf(bio_err, "error, no objects specified in config file\n");
1131         return 0;
1132     }
1133     if (attribs) {
1134         for (i = 0; i < sk_CONF_VALUE_num(attr_sk); i++) {
1135             v = sk_CONF_VALUE_value(attr_sk, i);
1136             if (!X509_REQ_add1_attr_by_txt(req, v->name, chtype,
1137                                            (unsigned char *)v->value, -1))
1138                 return 0;
1139         }
1140     }
1141     return 1;
1142 }
1143
1144 static int add_DN_object(X509_NAME *n, char *text, const char *def,
1145                          char *value, int nid, int n_min, int n_max,
1146                          unsigned long chtype, int mval)
1147 {
1148     int i, ret = 0;
1149     char buf[1024];
1150  start:
1151     if (!batch)
1152         BIO_printf(bio_err, "%s [%s]:", text, def);
1153     (void)BIO_flush(bio_err);
1154     if (value != NULL) {
1155         OPENSSL_strlcpy(buf, value, sizeof buf);
1156         OPENSSL_strlcat(buf, "\n", sizeof buf);
1157         BIO_printf(bio_err, "%s\n", value);
1158     } else {
1159         buf[0] = '\0';
1160         if (!batch) {
1161             if (!fgets(buf, sizeof buf, stdin))
1162                 return 0;
1163         } else {
1164             buf[0] = '\n';
1165             buf[1] = '\0';
1166         }
1167     }
1168
1169     if (buf[0] == '\0')
1170         return (0);
1171     else if (buf[0] == '\n') {
1172         if ((def == NULL) || (def[0] == '\0'))
1173             return (1);
1174         OPENSSL_strlcpy(buf, def, sizeof buf);
1175         OPENSSL_strlcat(buf, "\n", sizeof buf);
1176     } else if ((buf[0] == '.') && (buf[1] == '\n'))
1177         return (1);
1178
1179     i = strlen(buf);
1180     if (buf[i - 1] != '\n') {
1181         BIO_printf(bio_err, "weird input :-(\n");
1182         return (0);
1183     }
1184     buf[--i] = '\0';
1185 #ifdef CHARSET_EBCDIC
1186     ebcdic2ascii(buf, buf, i);
1187 #endif
1188     if (!req_check_len(i, n_min, n_max)) {
1189         if (batch || value)
1190             return 0;
1191         goto start;
1192     }
1193
1194     if (!X509_NAME_add_entry_by_NID(n, nid, chtype,
1195                                     (unsigned char *)buf, -1, -1, mval))
1196         goto err;
1197     ret = 1;
1198  err:
1199     return (ret);
1200 }
1201
1202 static int add_attribute_object(X509_REQ *req, char *text, const char *def,
1203                                 char *value, int nid, int n_min,
1204                                 int n_max, unsigned long chtype)
1205 {
1206     int i;
1207     static char buf[1024];
1208
1209  start:
1210     if (!batch)
1211         BIO_printf(bio_err, "%s [%s]:", text, def);
1212     (void)BIO_flush(bio_err);
1213     if (value != NULL) {
1214         OPENSSL_strlcpy(buf, value, sizeof buf);
1215         OPENSSL_strlcat(buf, "\n", sizeof buf);
1216         BIO_printf(bio_err, "%s\n", value);
1217     } else {
1218         buf[0] = '\0';
1219         if (!batch) {
1220             if (!fgets(buf, sizeof buf, stdin))
1221                 return 0;
1222         } else {
1223             buf[0] = '\n';
1224             buf[1] = '\0';
1225         }
1226     }
1227
1228     if (buf[0] == '\0')
1229         return (0);
1230     else if (buf[0] == '\n') {
1231         if ((def == NULL) || (def[0] == '\0'))
1232             return (1);
1233         OPENSSL_strlcpy(buf, def, sizeof buf);
1234         OPENSSL_strlcat(buf, "\n", sizeof buf);
1235     } else if ((buf[0] == '.') && (buf[1] == '\n'))
1236         return (1);
1237
1238     i = strlen(buf);
1239     if (buf[i - 1] != '\n') {
1240         BIO_printf(bio_err, "weird input :-(\n");
1241         return (0);
1242     }
1243     buf[--i] = '\0';
1244 #ifdef CHARSET_EBCDIC
1245     ebcdic2ascii(buf, buf, i);
1246 #endif
1247     if (!req_check_len(i, n_min, n_max)) {
1248         if (batch || value)
1249             return 0;
1250         goto start;
1251     }
1252
1253     if (!X509_REQ_add1_attr_by_NID(req, nid, chtype,
1254                                    (unsigned char *)buf, -1)) {
1255         BIO_printf(bio_err, "Error adding attribute\n");
1256         ERR_print_errors(bio_err);
1257         goto err;
1258     }
1259
1260     return (1);
1261  err:
1262     return (0);
1263 }
1264
1265 static int req_check_len(int len, int n_min, int n_max)
1266 {
1267     if ((n_min > 0) && (len < n_min)) {
1268         BIO_printf(bio_err,
1269                    "string is too short, it needs to be at least %d bytes long\n",
1270                    n_min);
1271         return (0);
1272     }
1273     if ((n_max >= 0) && (len > n_max)) {
1274         BIO_printf(bio_err,
1275                    "string is too long, it needs to be less than  %d bytes long\n",
1276                    n_max);
1277         return (0);
1278     }
1279     return (1);
1280 }
1281
1282 /* Check if the end of a string matches 'end' */
1283 static int check_end(const char *str, const char *end)
1284 {
1285     int elen, slen;
1286     const char *tmp;
1287     elen = strlen(end);
1288     slen = strlen(str);
1289     if (elen > slen)
1290         return 1;
1291     tmp = str + slen - elen;
1292     return strcmp(tmp, end);
1293 }
1294
1295 static EVP_PKEY_CTX *set_keygen_ctx(const char *gstr,
1296                                     int *pkey_type, long *pkeylen,
1297                                     char **palgnam, ENGINE *keygen_engine)
1298 {
1299     EVP_PKEY_CTX *gctx = NULL;
1300     EVP_PKEY *param = NULL;
1301     long keylen = -1;
1302     BIO *pbio = NULL;
1303     const char *paramfile = NULL;
1304
1305     if (gstr == NULL) {
1306         *pkey_type = EVP_PKEY_RSA;
1307         keylen = *pkeylen;
1308     } else if (gstr[0] >= '0' && gstr[0] <= '9') {
1309         *pkey_type = EVP_PKEY_RSA;
1310         keylen = atol(gstr);
1311         *pkeylen = keylen;
1312     } else if (strncmp(gstr, "param:", 6) == 0)
1313         paramfile = gstr + 6;
1314     else {
1315         const char *p = strchr(gstr, ':');
1316         int len;
1317         ENGINE *tmpeng;
1318         const EVP_PKEY_ASN1_METHOD *ameth;
1319
1320         if (p)
1321             len = p - gstr;
1322         else
1323             len = strlen(gstr);
1324         /*
1325          * The lookup of a the string will cover all engines so keep a note
1326          * of the implementation.
1327          */
1328
1329         ameth = EVP_PKEY_asn1_find_str(&tmpeng, gstr, len);
1330
1331         if (!ameth) {
1332             BIO_printf(bio_err, "Unknown algorithm %.*s\n", len, gstr);
1333             return NULL;
1334         }
1335
1336         EVP_PKEY_asn1_get0_info(NULL, pkey_type, NULL, NULL, NULL, ameth);
1337 #ifndef OPENSSL_NO_ENGINE
1338         ENGINE_finish(tmpeng);
1339 #endif
1340         if (*pkey_type == EVP_PKEY_RSA) {
1341             if (p) {
1342                 keylen = atol(p + 1);
1343                 *pkeylen = keylen;
1344             } else
1345                 keylen = *pkeylen;
1346         } else if (p)
1347             paramfile = p + 1;
1348     }
1349
1350     if (paramfile) {
1351         pbio = BIO_new_file(paramfile, "r");
1352         if (!pbio) {
1353             BIO_printf(bio_err, "Can't open parameter file %s\n", paramfile);
1354             return NULL;
1355         }
1356         param = PEM_read_bio_Parameters(pbio, NULL);
1357
1358         if (!param) {
1359             X509 *x;
1360             (void)BIO_reset(pbio);
1361             x = PEM_read_bio_X509(pbio, NULL, NULL, NULL);
1362             if (x) {
1363                 param = X509_get_pubkey(x);
1364                 X509_free(x);
1365             }
1366         }
1367
1368         BIO_free(pbio);
1369
1370         if (!param) {
1371             BIO_printf(bio_err, "Error reading parameter file %s\n", paramfile);
1372             return NULL;
1373         }
1374         if (*pkey_type == -1)
1375             *pkey_type = EVP_PKEY_id(param);
1376         else if (*pkey_type != EVP_PKEY_base_id(param)) {
1377             BIO_printf(bio_err, "Key Type does not match parameters\n");
1378             EVP_PKEY_free(param);
1379             return NULL;
1380         }
1381     }
1382
1383     if (palgnam) {
1384         const EVP_PKEY_ASN1_METHOD *ameth;
1385         ENGINE *tmpeng;
1386         const char *anam;
1387         ameth = EVP_PKEY_asn1_find(&tmpeng, *pkey_type);
1388         if (!ameth) {
1389             BIO_puts(bio_err, "Internal error: can't find key algorithm\n");
1390             return NULL;
1391         }
1392         EVP_PKEY_asn1_get0_info(NULL, NULL, NULL, NULL, &anam, ameth);
1393         *palgnam = OPENSSL_strdup(anam);
1394 #ifndef OPENSSL_NO_ENGINE
1395         ENGINE_finish(tmpeng);
1396 #endif
1397     }
1398
1399     if (param) {
1400         gctx = EVP_PKEY_CTX_new(param, keygen_engine);
1401         *pkeylen = EVP_PKEY_bits(param);
1402         EVP_PKEY_free(param);
1403     } else
1404         gctx = EVP_PKEY_CTX_new_id(*pkey_type, keygen_engine);
1405
1406     if (gctx == NULL) {
1407         BIO_puts(bio_err, "Error allocating keygen context\n");
1408         ERR_print_errors(bio_err);
1409         return NULL;
1410     }
1411
1412     if (EVP_PKEY_keygen_init(gctx) <= 0) {
1413         BIO_puts(bio_err, "Error initializing keygen context\n");
1414         ERR_print_errors(bio_err);
1415         EVP_PKEY_CTX_free(gctx);
1416         return NULL;
1417     }
1418 #ifndef OPENSSL_NO_RSA
1419     if ((*pkey_type == EVP_PKEY_RSA) && (keylen != -1)) {
1420         if (EVP_PKEY_CTX_set_rsa_keygen_bits(gctx, keylen) <= 0) {
1421             BIO_puts(bio_err, "Error setting RSA keysize\n");
1422             ERR_print_errors(bio_err);
1423             EVP_PKEY_CTX_free(gctx);
1424             return NULL;
1425         }
1426     }
1427 #endif
1428
1429     return gctx;
1430 }
1431
1432 static int genpkey_cb(EVP_PKEY_CTX *ctx)
1433 {
1434     char c = '*';
1435     BIO *b = EVP_PKEY_CTX_get_app_data(ctx);
1436     int p;
1437     p = EVP_PKEY_CTX_get_keygen_info(ctx, 0);
1438     if (p == 0)
1439         c = '.';
1440     if (p == 1)
1441         c = '+';
1442     if (p == 2)
1443         c = '*';
1444     if (p == 3)
1445         c = '\n';
1446     BIO_write(b, &c, 1);
1447     (void)BIO_flush(b);
1448     return 1;
1449 }
1450
1451 static int do_sign_init(EVP_MD_CTX *ctx, EVP_PKEY *pkey,
1452                         const EVP_MD *md, STACK_OF(OPENSSL_STRING) *sigopts)
1453 {
1454     EVP_PKEY_CTX *pkctx = NULL;
1455     int i;
1456
1457     if (ctx == NULL)
1458         return 0;
1459     if (!EVP_DigestSignInit(ctx, &pkctx, md, NULL, pkey))
1460         return 0;
1461     for (i = 0; i < sk_OPENSSL_STRING_num(sigopts); i++) {
1462         char *sigopt = sk_OPENSSL_STRING_value(sigopts, i);
1463         if (pkey_ctrl_string(pkctx, sigopt) <= 0) {
1464             BIO_printf(bio_err, "parameter error \"%s\"\n", sigopt);
1465             ERR_print_errors(bio_err);
1466             return 0;
1467         }
1468     }
1469     return 1;
1470 }
1471
1472 int do_X509_sign(X509 *x, EVP_PKEY *pkey, const EVP_MD *md,
1473                  STACK_OF(OPENSSL_STRING) *sigopts)
1474 {
1475     int rv;
1476     EVP_MD_CTX *mctx = EVP_MD_CTX_new();
1477
1478     rv = do_sign_init(mctx, pkey, md, sigopts);
1479     if (rv > 0)
1480         rv = X509_sign_ctx(x, mctx);
1481     EVP_MD_CTX_free(mctx);
1482     return rv > 0 ? 1 : 0;
1483 }
1484
1485 int do_X509_REQ_sign(X509_REQ *x, EVP_PKEY *pkey, const EVP_MD *md,
1486                      STACK_OF(OPENSSL_STRING) *sigopts)
1487 {
1488     int rv;
1489     EVP_MD_CTX *mctx = EVP_MD_CTX_new();
1490     rv = do_sign_init(mctx, pkey, md, sigopts);
1491     if (rv > 0)
1492         rv = X509_REQ_sign_ctx(x, mctx);
1493     EVP_MD_CTX_free(mctx);
1494     return rv > 0 ? 1 : 0;
1495 }
1496
1497 int do_X509_CRL_sign(X509_CRL *x, EVP_PKEY *pkey, const EVP_MD *md,
1498                      STACK_OF(OPENSSL_STRING) *sigopts)
1499 {
1500     int rv;
1501     EVP_MD_CTX *mctx = EVP_MD_CTX_new();
1502     rv = do_sign_init(mctx, pkey, md, sigopts);
1503     if (rv > 0)
1504         rv = X509_CRL_sign_ctx(x, mctx);
1505     EVP_MD_CTX_free(mctx);
1506     return rv > 0 ? 1 : 0;
1507 }