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 int join(char buf[], size_t buf_size, const char *name,
  68                 const char *tail, const char *desc);
  69 static EVP_PKEY_CTX *set_keygen_ctx(const char *gstr,
  70                                     int *pkey_type, long *pkeylen,
  71                                     char **palgnam, ENGINE *keygen_engine);
  72 static CONF *req_conf = NULL;
  73 static int batch = 0;
  74
  75 typedef enum OPTION_choice {
  76     OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
  77     OPT_INFORM, OPT_OUTFORM, OPT_ENGINE, OPT_KEYGEN_ENGINE, OPT_KEY,
  78     OPT_PUBKEY, OPT_NEW, OPT_CONFIG, OPT_KEYFORM, OPT_IN, OPT_OUT,
  79     OPT_KEYOUT, OPT_PASSIN, OPT_PASSOUT, OPT_NEWKEY,
  80     OPT_PKEYOPT, OPT_SIGOPT, OPT_BATCH, OPT_NEWHDR, OPT_MODULUS,
  81     OPT_VERIFY, OPT_NODES, OPT_NOOUT, OPT_VERBOSE, OPT_UTF8,
  82     OPT_NAMEOPT, OPT_REQOPT, OPT_SUBJ, OPT_SUBJECT, OPT_TEXT, OPT_X509,
  83     OPT_MULTIVALUE_RDN, OPT_DAYS, OPT_SET_SERIAL, OPT_EXTENSIONS,
  84     OPT_REQEXTS, OPT_PRECERT, OPT_MD,
  85     OPT_R_ENUM
  86 } OPTION_CHOICE;
  87
  88 const OPTIONS req_options[] = {
  89     {"help", OPT_HELP, '-', "Display this summary"},
  90     {"inform", OPT_INFORM, 'F', "Input format - DER or PEM"},
  91     {"outform", OPT_OUTFORM, 'F', "Output format - DER or PEM"},
  92     {"in", OPT_IN, '<', "Input file"},
  93     {"out", OPT_OUT, '>', "Output file"},
  94     {"key", OPT_KEY, 's', "Private key to use"},
  95     {"keyform", OPT_KEYFORM, 'f', "Key file format"},
  96     {"pubkey", OPT_PUBKEY, '-', "Output public key"},
  97     {"new", OPT_NEW, '-', "New request"},
  98     {"config", OPT_CONFIG, '<', "Request template file"},
  99     {"keyout", OPT_KEYOUT, '>', "File to send the key to"},
 100     {"passin", OPT_PASSIN, 's', "Private key password source"},
 101     {"passout", OPT_PASSOUT, 's', "Output file pass phrase source"},
 102     OPT_R_OPTIONS,
 103     {"newkey", OPT_NEWKEY, 's', "Specify as type:bits"},
 104     {"pkeyopt", OPT_PKEYOPT, 's', "Public key options as opt:value"},
 105     {"sigopt", OPT_SIGOPT, 's', "Signature parameter in n:v form"},
 106     {"batch", OPT_BATCH, '-',
 107      "Do not ask anything during request generation"},
 108     {"newhdr", OPT_NEWHDR, '-', "Output \"NEW\" in the header lines"},
 109     {"modulus", OPT_MODULUS, '-', "RSA modulus"},
 110     {"verify", OPT_VERIFY, '-', "Verify signature on REQ"},
 111     {"nodes", OPT_NODES, '-', "Don't encrypt the output key"},
 112     {"noout", OPT_NOOUT, '-', "Do not output REQ"},
 113     {"verbose", OPT_VERBOSE, '-', "Verbose output"},
 114     {"utf8", OPT_UTF8, '-', "Input characters are UTF8 (default ASCII)"},
 115     {"nameopt", OPT_NAMEOPT, 's', "Various certificate name options"},
 116     {"reqopt", OPT_REQOPT, 's', "Various request text options"},
 117     {"text", OPT_TEXT, '-', "Text form of request"},
 118     {"x509", OPT_X509, '-',
 119      "Output a x509 structure instead of a cert request"},
 120     {OPT_MORE_STR, 1, 1, "(Required by some CA's)"},
 121     {"subj", OPT_SUBJ, 's', "Set or modify request subject"},
 122     {"subject", OPT_SUBJECT, '-', "Output the request's subject"},
 123     {"multivalue-rdn", OPT_MULTIVALUE_RDN, '-',
 124      "Enable support for multivalued RDNs"},
 125     {"days", OPT_DAYS, 'p', "Number of days cert is valid for"},
 126     {"set_serial", OPT_SET_SERIAL, 's', "Serial number to use"},
 127     {"extensions", OPT_EXTENSIONS, 's',
 128      "Cert extension section (override value in config file)"},
 129     {"reqexts", OPT_REQEXTS, 's',
 130      "Request extension section (override value in config file)"},
 131     {"precert", OPT_PRECERT, '-', "Add a poison extension (implies -new)"},
 132     {"", OPT_MD, '-', "Any supported digest"},
 133 #ifndef OPENSSL_NO_ENGINE
 134     {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
 135     {"keygen_engine", OPT_KEYGEN_ENGINE, 's',
 136      "Specify engine to be used for key generation operations"},
 137 #endif
 138     {NULL}
 139 };
 140
 141 int req_main(int argc, char **argv)
 142 {
 143     ASN1_INTEGER *serial = NULL;
 144     BIO *in = NULL, *out = NULL;
 145     ENGINE *e = NULL, *gen_eng = NULL;
 146     EVP_PKEY *pkey = NULL;
 147     EVP_PKEY_CTX *genctx = NULL;
 148     STACK_OF(OPENSSL_STRING) *pkeyopts = NULL, *sigopts = NULL;
 149     X509 *x509ss = NULL;
 150     X509_REQ *req = NULL;
 151     const EVP_CIPHER *cipher = NULL;
 152     const EVP_MD *md_alg = NULL, *digest = NULL;
 153     char *extensions = NULL, *infile = NULL;
 154     char *outfile = NULL, *keyfile = NULL;
 155     char *keyalgstr = NULL, *p, *prog, *passargin = NULL, *passargout = NULL;
 156     char *passin = NULL, *passout = NULL;
 157     char *nofree_passin = NULL, *nofree_passout = NULL;
 158     char *req_exts = NULL, *subj = NULL;
 159     char *template = default_config_file, *keyout = NULL;
 160     const char *keyalg = NULL;
 161     OPTION_CHOICE o;
 162     int ret = 1, x509 = 0, days = 30, i = 0, newreq = 0, verbose = 0;
 163     int pkey_type = -1, private = 0;
 164     int informat = FORMAT_PEM, outformat = FORMAT_PEM, keyform = FORMAT_PEM;
 165     int modulus = 0, multirdn = 0, verify = 0, noout = 0, text = 0;
 166     int nodes = 0, newhdr = 0, subject = 0, pubkey = 0, precert = 0;
 167     long newkey = -1;
 168     unsigned long chtype = MBSTRING_ASC, reqflag = 0;
 169
 170 #ifndef OPENSSL_NO_DES
 171     cipher = EVP_des_ede3_cbc();
 172 #endif
 173
 174     prog = opt_init(argc, argv, req_options);
 175     while ((o = opt_next()) != OPT_EOF) {
 176         switch (o) {
 177         case OPT_EOF:
 178         case OPT_ERR:
 179  opthelp:
 180             BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
 181             goto end;
 182         case OPT_HELP:
 183             opt_help(req_options);
 184             ret = 0;
 185             goto end;
 186         case OPT_INFORM:
 187             if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &informat))
 188                 goto opthelp;
 189             break;
 190         case OPT_OUTFORM:
 191             if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &outformat))
 192                 goto opthelp;
 193             break;
 194         case OPT_ENGINE:
 195             e = setup_engine(opt_arg(), 0);
 196             break;
 197         case OPT_KEYGEN_ENGINE:
 198 #ifndef OPENSSL_NO_ENGINE
 199             gen_eng = ENGINE_by_id(opt_arg());
 200             if (gen_eng == NULL) {
 201                 BIO_printf(bio_err, "Can't find keygen engine %s\n", *argv);
 202                 goto opthelp;
 203             }
 204 #endif
 205             break;
 206         case OPT_KEY:
 207             keyfile = opt_arg();
 208             break;
 209         case OPT_PUBKEY:
 210             pubkey = 1;
 211             break;
 212         case OPT_NEW:
 213             newreq = 1;
 214             break;
 215         case OPT_CONFIG:
 216             template = opt_arg();
 217             break;
 218         case OPT_KEYFORM:
 219             if (!opt_format(opt_arg(), OPT_FMT_ANY, &keyform))
 220                 goto opthelp;
 221             break;
 222         case OPT_IN:
 223             infile = opt_arg();
 224             break;
 225         case OPT_OUT:
 226             outfile = opt_arg();
 227             break;
 228         case OPT_KEYOUT:
 229             keyout = opt_arg();
 230             break;
 231         case OPT_PASSIN:
 232             passargin = opt_arg();
 233             break;
 234         case OPT_PASSOUT:
 235             passargout = opt_arg();
 236             break;
 237         case OPT_R_CASES:
 238             if (!opt_rand(o))
 239                 goto end;
 240             break;
 241         case OPT_NEWKEY:
 242             keyalg = opt_arg();
 243             newreq = 1;
 244             break;
 245         case OPT_PKEYOPT:
 246             if (!pkeyopts)
 247                 pkeyopts = sk_OPENSSL_STRING_new_null();
 248             if (!pkeyopts || !sk_OPENSSL_STRING_push(pkeyopts, opt_arg()))
 249                 goto opthelp;
 250             break;
 251         case OPT_SIGOPT:
 252             if (!sigopts)
 253                 sigopts = sk_OPENSSL_STRING_new_null();
 254             if (!sigopts || !sk_OPENSSL_STRING_push(sigopts, opt_arg()))
 255                 goto opthelp;
 256             break;
 257         case OPT_BATCH:
 258             batch = 1;
 259             break;
 260         case OPT_NEWHDR:
 261             newhdr = 1;
 262             break;
 263         case OPT_MODULUS:
 264             modulus = 1;
 265             break;
 266         case OPT_VERIFY:
 267             verify = 1;
 268             break;
 269         case OPT_NODES:
 270             nodes = 1;
 271             break;
 272         case OPT_NOOUT:
 273             noout = 1;
 274             break;
 275         case OPT_VERBOSE:
 276             verbose = 1;
 277             break;
 278         case OPT_UTF8:
 279             chtype = MBSTRING_UTF8;
 280             break;
 281         case OPT_NAMEOPT:
 282             if (!set_nameopt(opt_arg()))
 283                 goto opthelp;
 284             break;
 285         case OPT_REQOPT:
 286             if (!set_cert_ex(&reqflag, opt_arg()))
 287                 goto opthelp;
 288             break;
 289         case OPT_TEXT:
 290             text = 1;
 291             break;
 292         case OPT_X509:
 293             x509 = 1;
 294             break;
 295         case OPT_DAYS:
 296             days = atoi(opt_arg());
 297             break;
 298         case OPT_SET_SERIAL:
 299             if (serial != NULL) {
 300                 BIO_printf(bio_err, "Serial number supplied twice\n");
 301                 goto opthelp;
 302             }
 303             serial = s2i_ASN1_INTEGER(NULL, opt_arg());
 304             if (serial == NULL)
 305                 goto opthelp;
 306             break;
 307         case OPT_SUBJECT:
 308             subject = 1;
 309             break;
 310         case OPT_SUBJ:
 311             subj = opt_arg();
 312             break;
 313         case OPT_MULTIVALUE_RDN:
 314             multirdn = 1;
 315             break;
 316         case OPT_EXTENSIONS:
 317             extensions = opt_arg();
 318             break;
 319         case OPT_REQEXTS:
 320             req_exts = opt_arg();
 321             break;
 322         case OPT_PRECERT:
 323             newreq = precert = 1;
 324             break;
 325         case OPT_MD:
 326             if (!opt_md(opt_unknown(), &md_alg))
 327                 goto opthelp;
 328             digest = md_alg;
 329             break;
 330         }
 331     }
 332     argc = opt_num_rest();
 333     if (argc != 0)
 334         goto opthelp;
 335
 336     if (x509 && infile == NULL)
 337         newreq = 1;
 338
 339     /* TODO: simplify this as pkey is still always NULL here */
 340     private = newreq && (pkey == NULL) ? 1 : 0;
 341
 342     if (!app_passwd(passargin, passargout, &passin, &passout)) {
 343         BIO_printf(bio_err, "Error getting passwords\n");
 344         goto end;
 345     }
 346
 347     if (verbose)
 348         BIO_printf(bio_err, "Using configuration from %s\n", template);
 349     req_conf = app_load_config(template);
 350     if (template != default_config_file && !app_load_modules(req_conf))
 351         goto end;
 352
 353     if (req_conf != NULL) {
 354         p = NCONF_get_string(req_conf, NULL, "oid_file");
 355         if (p == NULL)
 356             ERR_clear_error();
 357         if (p != NULL) {
 358             BIO *oid_bio;
 359
 360             oid_bio = BIO_new_file(p, "r");
 361             if (oid_bio == NULL) {
 362                 /*-
 363                 BIO_printf(bio_err,"problems opening %s for extra oid's\n",p);
 364                 ERR_print_errors(bio_err);
 365                 */
 366             } else {
 367                 OBJ_create_objects(oid_bio);
 368                 BIO_free(oid_bio);
 369             }
 370         }
 371     }
 372     if (!add_oid_section(req_conf))
 373         goto end;
 374
 375     if (md_alg == NULL) {
 376         p = NCONF_get_string(req_conf, SECTION, "default_md");
 377         if (p == NULL) {
 378             ERR_clear_error();
 379         } else {
 380             if (!opt_md(p, &md_alg))
 381                 goto opthelp;
 382             digest = md_alg;
 383         }
 384     }
 385
 386     if (extensions == NULL) {
 387         extensions = NCONF_get_string(req_conf, SECTION, V3_EXTENSIONS);
 388         if (extensions == NULL)
 389             ERR_clear_error();
 390     }
 391     if (extensions != NULL) {
 392         /* Check syntax of file */
 393         X509V3_CTX ctx;
 394         X509V3_set_ctx_test(&ctx);
 395         X509V3_set_nconf(&ctx, req_conf);
 396         if (!X509V3_EXT_add_nconf(req_conf, &ctx, extensions, NULL)) {
 397             BIO_printf(bio_err,
 398                        "Error Loading extension section %s\n", extensions);
 399             goto end;
 400         }
 401     }
 402
 403     if (passin == NULL) {
 404         passin = nofree_passin =
 405             NCONF_get_string(req_conf, SECTION, "input_password");
 406         if (passin == NULL)
 407             ERR_clear_error();
 408     }
 409
 410     if (passout == NULL) {
 411         passout = nofree_passout =
 412             NCONF_get_string(req_conf, SECTION, "output_password");
 413         if (passout == NULL)
 414             ERR_clear_error();
 415     }
 416
 417     p = NCONF_get_string(req_conf, SECTION, STRING_MASK);
 418     if (p == NULL)
 419         ERR_clear_error();
 420
 421     if (p != NULL && !ASN1_STRING_set_default_mask_asc(p)) {
 422         BIO_printf(bio_err, "Invalid global string mask setting %s\n", p);
 423         goto end;
 424     }
 425
 426     if (chtype != MBSTRING_UTF8) {
 427         p = NCONF_get_string(req_conf, SECTION, UTF8_IN);
 428         if (p == NULL)
 429             ERR_clear_error();
 430         else if (strcmp(p, "yes") == 0)
 431             chtype = MBSTRING_UTF8;
 432     }
 433
 434     if (req_exts == NULL) {
 435         req_exts = NCONF_get_string(req_conf, SECTION, REQ_EXTENSIONS);
 436         if (req_exts == NULL)
 437             ERR_clear_error();
 438     }
 439     if (req_exts != NULL) {
 440         /* Check syntax of file */
 441         X509V3_CTX ctx;
 442         X509V3_set_ctx_test(&ctx);
 443         X509V3_set_nconf(&ctx, req_conf);
 444         if (!X509V3_EXT_add_nconf(req_conf, &ctx, req_exts, NULL)) {
 445             BIO_printf(bio_err,
 446                        "Error Loading request extension section %s\n",
 447                        req_exts);
 448             goto end;
 449         }
 450     }
 451
 452     if (keyfile != NULL) {
 453         pkey = load_key(keyfile, keyform, 0, passin, e, "Private Key");
 454         if (pkey == NULL) {
 455             /* load_key() has already printed an appropriate message */
 456             goto end;
 457         } else {
 458             app_RAND_load_conf(req_conf, SECTION);
 459         }
 460     }
 461
 462     if (newreq && (pkey == NULL)) {
 463         app_RAND_load_conf(req_conf, SECTION);
 464
 465         if (!NCONF_get_number(req_conf, SECTION, BITS, &newkey)) {
 466             newkey = DEFAULT_KEY_LENGTH;
 467         }
 468
 469         if (keyalg != NULL) {
 470             genctx = set_keygen_ctx(keyalg, &pkey_type, &newkey,
 471                                     &keyalgstr, gen_eng);
 472             if (genctx == NULL)
 473                 goto end;
 474         }
 475
 476         if (newkey < MIN_KEY_LENGTH
 477             && (pkey_type == EVP_PKEY_RSA || pkey_type == EVP_PKEY_DSA)) {
 478             BIO_printf(bio_err, "private key length is too short,\n");
 479             BIO_printf(bio_err, "it needs to be at least %d bits, not %ld\n",
 480                        MIN_KEY_LENGTH, newkey);
 481             goto end;
 482         }
 483
 484         if (genctx == NULL) {
 485             genctx = set_keygen_ctx(NULL, &pkey_type, &newkey,
 486                                     &keyalgstr, gen_eng);
 487             if (!genctx)
 488                 goto end;
 489         }
 490
 491         if (pkeyopts != NULL) {
 492             char *genopt;
 493             for (i = 0; i < sk_OPENSSL_STRING_num(pkeyopts); i++) {
 494                 genopt = sk_OPENSSL_STRING_value(pkeyopts, i);
 495                 if (pkey_ctrl_string(genctx, genopt) <= 0) {
 496                     BIO_printf(bio_err, "parameter error \"%s\"\n", genopt);
 497                     ERR_print_errors(bio_err);
 498                     goto end;
 499                 }
 500             }
 501         }
 502
 503         if (pkey_type == EVP_PKEY_EC) {
 504             BIO_printf(bio_err, "Generating an EC private key\n");
 505         } else {
 506             BIO_printf(bio_err, "Generating a %ld bit %s private key\n",
 507                        newkey, keyalgstr);
 508         }
 509
 510         EVP_PKEY_CTX_set_cb(genctx, genpkey_cb);
 511         EVP_PKEY_CTX_set_app_data(genctx, bio_err);
 512
 513         if (EVP_PKEY_keygen(genctx, &pkey) <= 0) {
 514             BIO_puts(bio_err, "Error Generating Key\n");
 515             goto end;
 516         }
 517
 518         EVP_PKEY_CTX_free(genctx);
 519         genctx = NULL;
 520
 521         if (keyout == NULL) {
 522             keyout = NCONF_get_string(req_conf, SECTION, KEYFILE);
 523             if (keyout == NULL)
 524                 ERR_clear_error();
 525         }
 526
 527         if (keyout == NULL)
 528             BIO_printf(bio_err, "writing new private key to stdout\n");
 529         else
 530             BIO_printf(bio_err, "writing new private key to '%s'\n", keyout);
 531         out = bio_open_owner(keyout, outformat, private);
 532         if (out == NULL)
 533             goto end;
 534
 535         p = NCONF_get_string(req_conf, SECTION, "encrypt_rsa_key");
 536         if (p == NULL) {
 537             ERR_clear_error();
 538             p = NCONF_get_string(req_conf, SECTION, "encrypt_key");
 539             if (p == NULL)
 540                 ERR_clear_error();
 541         }
 542         if ((p != NULL) && (strcmp(p, "no") == 0))
 543             cipher = NULL;
 544         if (nodes)
 545             cipher = NULL;
 546
 547         i = 0;
 548  loop:
 549         assert(private);
 550         if (!PEM_write_bio_PrivateKey(out, pkey, cipher,
 551                                       NULL, 0, NULL, passout)) {
 552             if ((ERR_GET_REASON(ERR_peek_error()) ==
 553                  PEM_R_PROBLEMS_GETTING_PASSWORD) && (i < 3)) {
 554                 ERR_clear_error();
 555                 i++;
 556                 goto loop;
 557             }
 558             goto end;
 559         }
 560         BIO_free(out);
 561         out = NULL;
 562         BIO_printf(bio_err, "-----\n");
 563     }
 564
 565     if (!newreq) {
 566         in = bio_open_default(infile, 'r', informat);
 567         if (in == NULL)
 568             goto end;
 569
 570         if (informat == FORMAT_ASN1)
 571             req = d2i_X509_REQ_bio(in, NULL);
 572         else
 573             req = PEM_read_bio_X509_REQ(in, NULL, NULL, NULL);
 574         if (req == NULL) {
 575             BIO_printf(bio_err, "unable to load X509 request\n");
 576             goto end;
 577         }
 578     }
 579
 580     if (newreq || x509) {
 581         if (pkey == NULL) {
 582             BIO_printf(bio_err, "you need to specify a private key\n");
 583             goto end;
 584         }
 585
 586         if (req == NULL) {
 587             req = X509_REQ_new();
 588             if (req == NULL) {
 589                 goto end;
 590             }
 591
 592             i = make_REQ(req, pkey, subj, multirdn, !x509, chtype);
 593             subj = NULL;        /* done processing '-subj' option */
 594             if (!i) {
 595                 BIO_printf(bio_err, "problems making Certificate Request\n");
 596                 goto end;
 597             }
 598         }
 599         if (x509) {
 600             EVP_PKEY *tmppkey;
 601             X509V3_CTX ext_ctx;
 602             if ((x509ss = X509_new()) == NULL)
 603                 goto end;
 604
 605             /* Set version to V3 */
 606             if (extensions != NULL && !X509_set_version(x509ss, 2))
 607                 goto end;
 608             if (serial != NULL) {
 609                 if (!X509_set_serialNumber(x509ss, serial))
 610                     goto end;
 611             } else {
 612                 if (!rand_serial(NULL, X509_get_serialNumber(x509ss)))
 613                     goto end;
 614             }
 615
 616             if (!X509_set_issuer_name(x509ss, X509_REQ_get_subject_name(req)))
 617                 goto end;
 618             if (!set_cert_times(x509ss, NULL, NULL, days))
 619                 goto end;
 620             if (!X509_set_subject_name
 621                 (x509ss, X509_REQ_get_subject_name(req)))
 622                 goto end;
 623             tmppkey = X509_REQ_get0_pubkey(req);
 624             if (!tmppkey || !X509_set_pubkey(x509ss, tmppkey))
 625                 goto end;
 626
 627             /* Set up V3 context struct */
 628
 629             X509V3_set_ctx(&ext_ctx, x509ss, x509ss, NULL, NULL, 0);
 630             X509V3_set_nconf(&ext_ctx, req_conf);
 631
 632             /* Add extensions */
 633             if (extensions != NULL && !X509V3_EXT_add_nconf(req_conf,
 634                                                             &ext_ctx, extensions,
 635                                                             x509ss)) {
 636                 BIO_printf(bio_err, "Error Loading extension section %s\n",
 637                            extensions);
 638                 goto end;
 639             }
 640
 641             /* If a pre-cert was requested, we need to add a poison extension */
 642             if (precert) {
 643                 if (X509_add1_ext_i2d(x509ss, NID_ct_precert_poison, NULL, 1, 0)
 644                     != 1) {
 645                     BIO_printf(bio_err, "Error adding poison extension\n");
 646                     goto end;
 647                 }
 648             }
 649
 650             i = do_X509_sign(x509ss, pkey, digest, sigopts);
 651             if (!i) {
 652                 ERR_print_errors(bio_err);
 653                 goto end;
 654             }
 655         } else {
 656             X509V3_CTX ext_ctx;
 657
 658             /* Set up V3 context struct */
 659
 660             X509V3_set_ctx(&ext_ctx, NULL, NULL, req, NULL, 0);
 661             X509V3_set_nconf(&ext_ctx, req_conf);
 662
 663             /* Add extensions */
 664             if (req_exts != NULL
 665                 && !X509V3_EXT_REQ_add_nconf(req_conf, &ext_ctx,
 666                                              req_exts, req)) {
 667                 BIO_printf(bio_err, "Error Loading extension section %s\n",
 668                            req_exts);
 669                 goto end;
 670             }
 671             i = do_X509_REQ_sign(req, pkey, digest, sigopts);
 672             if (!i) {
 673                 ERR_print_errors(bio_err);
 674                 goto end;
 675             }
 676         }
 677     }
 678
 679     if (subj && x509) {
 680         BIO_printf(bio_err, "Cannot modify certificate subject\n");
 681         goto end;
 682     }
 683
 684     if (subj && !x509) {
 685         if (verbose) {
 686             BIO_printf(bio_err, "Modifying Request's Subject\n");
 687             print_name(bio_err, "old subject=",
 688                        X509_REQ_get_subject_name(req), get_nameopt());
 689         }
 690
 691         if (build_subject(req, subj, chtype, multirdn) == 0) {
 692             BIO_printf(bio_err, "ERROR: cannot modify subject\n");
 693             ret = 1;
 694             goto end;
 695         }
 696
 697         if (verbose) {
 698             print_name(bio_err, "new subject=",
 699                        X509_REQ_get_subject_name(req), get_nameopt());
 700         }
 701     }
 702
 703     if (verify && !x509) {
 704         EVP_PKEY *tpubkey = pkey;
 705
 706         if (tpubkey == NULL) {
 707             tpubkey = X509_REQ_get0_pubkey(req);
 708             if (tpubkey == NULL)
 709                 goto end;
 710         }
 711
 712         i = X509_REQ_verify(req, tpubkey);
 713
 714         if (i < 0) {
 715             goto end;
 716         } else if (i == 0) {
 717             BIO_printf(bio_err, "verify failure\n");
 718             ERR_print_errors(bio_err);
 719         } else {                 /* if (i > 0) */
 720             BIO_printf(bio_err, "verify OK\n");
 721         }
 722     }
 723
 724     if (noout && !text && !modulus && !subject && !pubkey) {
 725         ret = 0;
 726         goto end;
 727     }
 728
 729     out = bio_open_default(outfile,
 730                            keyout != NULL && outfile != NULL &&
 731                            strcmp(keyout, outfile) == 0 ? 'a' : 'w',
 732                            outformat);
 733     if (out == NULL)
 734         goto end;
 735
 736     if (pubkey) {
 737         EVP_PKEY *tpubkey = X509_REQ_get0_pubkey(req);
 738
 739         if (tpubkey == NULL) {
 740             BIO_printf(bio_err, "Error getting public key\n");
 741             ERR_print_errors(bio_err);
 742             goto end;
 743         }
 744         PEM_write_bio_PUBKEY(out, tpubkey);
 745     }
 746
 747     if (text) {
 748         if (x509)
 749             X509_print_ex(out, x509ss, get_nameopt(), reqflag);
 750         else
 751             X509_REQ_print_ex(out, req, get_nameopt(), reqflag);
 752     }
 753
 754     if (subject) {
 755         if (x509)
 756             print_name(out, "subject=", X509_get_subject_name(x509ss),
 757                        get_nameopt());
 758         else
 759             print_name(out, "subject=", X509_REQ_get_subject_name(req),
 760                        get_nameopt());
 761     }
 762
 763     if (modulus) {
 764         EVP_PKEY *tpubkey;
 765
 766         if (x509)
 767             tpubkey = X509_get0_pubkey(x509ss);
 768         else
 769             tpubkey = X509_REQ_get0_pubkey(req);
 770         if (tpubkey == NULL) {
 771             fprintf(stdout, "Modulus=unavailable\n");
 772             goto end;
 773         }
 774         fprintf(stdout, "Modulus=");
 775 #ifndef OPENSSL_NO_RSA
 776         if (EVP_PKEY_base_id(tpubkey) == EVP_PKEY_RSA) {
 777             const BIGNUM *n;
 778             RSA_get0_key(EVP_PKEY_get0_RSA(tpubkey), &n, NULL, NULL);
 779             BN_print(out, n);
 780         } else
 781 #endif
 782             fprintf(stdout, "Wrong Algorithm type");
 783         fprintf(stdout, "\n");
 784     }
 785
 786     if (!noout && !x509) {
 787         if (outformat == FORMAT_ASN1)
 788             i = i2d_X509_REQ_bio(out, req);
 789         else if (newhdr)
 790             i = PEM_write_bio_X509_REQ_NEW(out, req);
 791         else
 792             i = PEM_write_bio_X509_REQ(out, req);
 793         if (!i) {
 794             BIO_printf(bio_err, "unable to write X509 request\n");
 795             goto end;
 796         }
 797     }
 798     if (!noout && x509 && (x509ss != NULL)) {
 799         if (outformat == FORMAT_ASN1)
 800             i = i2d_X509_bio(out, x509ss);
 801         else
 802             i = PEM_write_bio_X509(out, x509ss);
 803         if (!i) {
 804             BIO_printf(bio_err, "unable to write X509 certificate\n");
 805             goto end;
 806         }
 807     }
 808     ret = 0;
 809  end:
 810     if (ret) {
 811         ERR_print_errors(bio_err);
 812     }
 813     NCONF_free(req_conf);
 814     BIO_free(in);
 815     BIO_free_all(out);
 816     EVP_PKEY_free(pkey);
 817     EVP_PKEY_CTX_free(genctx);
 818     sk_OPENSSL_STRING_free(pkeyopts);
 819     sk_OPENSSL_STRING_free(sigopts);
 820 #ifndef OPENSSL_NO_ENGINE
 821     ENGINE_free(gen_eng);
 822 #endif
 823     OPENSSL_free(keyalgstr);
 824     X509_REQ_free(req);
 825     X509_free(x509ss);
 826     ASN1_INTEGER_free(serial);
 827     release_engine(e);
 828     if (passin != nofree_passin)
 829         OPENSSL_free(passin);
 830     if (passout != nofree_passout)
 831         OPENSSL_free(passout);
 832     return ret;
 833 }
 834
 835 static int make_REQ(X509_REQ *req, EVP_PKEY *pkey, char *subj, int multirdn,
 836                     int attribs, unsigned long chtype)
 837 {
 838     int ret = 0, i;
 839     char no_prompt = 0;
 840     STACK_OF(CONF_VALUE) *dn_sk, *attr_sk = NULL;
 841     char *tmp, *dn_sect, *attr_sect;
 842
 843     tmp = NCONF_get_string(req_conf, SECTION, PROMPT);
 844     if (tmp == NULL)
 845         ERR_clear_error();
 846     if ((tmp != NULL) && strcmp(tmp, "no") == 0)
 847         no_prompt = 1;
 848
 849     dn_sect = NCONF_get_string(req_conf, SECTION, DISTINGUISHED_NAME);
 850     if (dn_sect == NULL) {
 851         BIO_printf(bio_err, "unable to find '%s' in config\n",
 852                    DISTINGUISHED_NAME);
 853         goto err;
 854     }
 855     dn_sk = NCONF_get_section(req_conf, dn_sect);
 856     if (dn_sk == NULL) {
 857         BIO_printf(bio_err, "unable to get '%s' section\n", dn_sect);
 858         goto err;
 859     }
 860
 861     attr_sect = NCONF_get_string(req_conf, SECTION, ATTRIBUTES);
 862     if (attr_sect == NULL) {
 863         ERR_clear_error();
 864         attr_sk = NULL;
 865     } else {
 866         attr_sk = NCONF_get_section(req_conf, attr_sect);
 867         if (attr_sk == NULL) {
 868             BIO_printf(bio_err, "unable to get '%s' section\n", attr_sect);
 869             goto err;
 870         }
 871     }
 872
 873     /* setup version number */
 874     if (!X509_REQ_set_version(req, 0L))
 875         goto err;               /* version 1 */
 876
 877     if (subj)
 878         i = build_subject(req, subj, chtype, multirdn);
 879     else if (no_prompt)
 880         i = auto_info(req, dn_sk, attr_sk, attribs, chtype);
 881     else
 882         i = prompt_info(req, dn_sk, dn_sect, attr_sk, attr_sect, attribs,
 883                         chtype);
 884     if (!i)
 885         goto err;
 886
 887     if (!X509_REQ_set_pubkey(req, pkey))
 888         goto err;
 889
 890     ret = 1;
 891  err:
 892     return ret;
 893 }
 894
 895 /*
 896  * subject is expected to be in the format /type0=value0/type1=value1/type2=...
 897  * where characters may be escaped by \
 898  */
 899 static int build_subject(X509_REQ *req, const char *subject, unsigned long chtype,
 900                          int multirdn)
 901 {
 902     X509_NAME *n;
 903
 904     if ((n = parse_name(subject, chtype, multirdn)) == NULL)
 905         return 0;
 906
 907     if (!X509_REQ_set_subject_name(req, n)) {
 908         X509_NAME_free(n);
 909         return 0;
 910     }
 911     X509_NAME_free(n);
 912     return 1;
 913 }
 914
 915 static int prompt_info(X509_REQ *req,
 916                        STACK_OF(CONF_VALUE) *dn_sk, const char *dn_sect,
 917                        STACK_OF(CONF_VALUE) *attr_sk, const char *attr_sect,
 918                        int attribs, unsigned long chtype)
 919 {
 920     int i;
 921     char *p, *q;
 922     char buf[100];
 923     int nid, mval;
 924     long n_min, n_max;
 925     char *type, *value;
 926     const char *def;
 927     CONF_VALUE *v;
 928     X509_NAME *subj;
 929     subj = X509_REQ_get_subject_name(req);
 930
 931     if (!batch) {
 932         BIO_printf(bio_err,
 933                    "You are about to be asked to enter information that will be incorporated\n");
 934         BIO_printf(bio_err, "into your certificate request.\n");
 935         BIO_printf(bio_err,
 936                    "What you are about to enter is what is called a Distinguished Name or a DN.\n");
 937         BIO_printf(bio_err,
 938                    "There are quite a few fields but you can leave some blank\n");
 939         BIO_printf(bio_err,
 940                    "For some fields there will be a default value,\n");
 941         BIO_printf(bio_err,
 942                    "If you enter '.', the field will be left blank.\n");
 943         BIO_printf(bio_err, "-----\n");
 944     }
 945
 946     if (sk_CONF_VALUE_num(dn_sk)) {
 947         i = -1;
 948  start:
 949         for ( ; ; ) {
 950             i++;
 951             if (sk_CONF_VALUE_num(dn_sk) <= i)
 952                 break;
 953
 954             v = sk_CONF_VALUE_value(dn_sk, i);
 955             p = q = NULL;
 956             type = v->name;
 957             if (!check_end(type, "_min") || !check_end(type, "_max") ||
 958                 !check_end(type, "_default") || !check_end(type, "_value"))
 959                 continue;
 960             /*
 961              * Skip past any leading X. X: X, etc to allow for multiple
 962              * instances
 963              */
 964             for (p = v->name; *p; p++)
 965                 if ((*p == ':') || (*p == ',') || (*p == '.')) {
 966                     p++;
 967                     if (*p)
 968                         type = p;
 969                     break;
 970                 }
 971             if (*type == '+') {
 972                 mval = -1;
 973                 type++;
 974             } else {
 975                 mval = 0;
 976             }
 977             /* If OBJ not recognised ignore it */
 978             if ((nid = OBJ_txt2nid(type)) == NID_undef)
 979                 goto start;
 980             if (!join(buf, sizeof(buf), v->name, "_default", "Name"))
 981                 return 0;
 982             if ((def = NCONF_get_string(req_conf, dn_sect, buf)) == NULL) {
 983                 ERR_clear_error();
 984                 def = "";
 985             }
 986
 987             if (!join(buf, sizeof(buf), v->name, "_value", "Name"))
 988                 return 0;
 989             if ((value = NCONF_get_string(req_conf, dn_sect, buf)) == NULL) {
 990                 ERR_clear_error();
 991                 value = NULL;
 992             }
 993
 994             if (!join(buf, sizeof(buf), v->name, "_min", "Name"))
 995                 return 0;
 996             if (!NCONF_get_number(req_conf, dn_sect, buf, &n_min)) {
 997                 ERR_clear_error();
 998                 n_min = -1;
 999             }
1000
1001
1002             if (!join(buf, sizeof(buf), v->name, "_max", "Name"))
1003                 return 0;
1004             if (!NCONF_get_number(req_conf, dn_sect, buf, &n_max)) {
1005                 ERR_clear_error();
1006                 n_max = -1;
1007             }
1008
1009             if (!add_DN_object(subj, v->value, def, value, nid,
1010                                n_min, n_max, chtype, mval))
1011                 return 0;
1012         }
1013         if (X509_NAME_entry_count(subj) == 0) {
1014             BIO_printf(bio_err,
1015                        "error, no objects specified in config file\n");
1016             return 0;
1017         }
1018
1019         if (attribs) {
1020             if ((attr_sk != NULL) && (sk_CONF_VALUE_num(attr_sk) > 0)
1021                 && (!batch)) {
1022                 BIO_printf(bio_err,
1023                            "\nPlease enter the following 'extra' attributes\n");
1024                 BIO_printf(bio_err,
1025                            "to be sent with your certificate request\n");
1026             }
1027
1028             i = -1;
1029  start2:
1030             for ( ; ; ) {
1031                 i++;
1032                 if ((attr_sk == NULL) || (sk_CONF_VALUE_num(attr_sk) <= i))
1033                     break;
1034
1035                 v = sk_CONF_VALUE_value(attr_sk, i);
1036                 type = v->name;
1037                 if ((nid = OBJ_txt2nid(type)) == NID_undef)
1038                     goto start2;
1039
1040                 if (!join(buf, sizeof(buf), type, "_default", "Name"))
1041                     return 0;
1042                 if ((def = NCONF_get_string(req_conf, attr_sect, buf))
1043                     == NULL) {
1044                     ERR_clear_error();
1045                     def = "";
1046                 }
1047
1048                 if (!join(buf, sizeof(buf), type, "_value", "Name"))
1049                     return 0;
1050                 if ((value = NCONF_get_string(req_conf, attr_sect, buf))
1051                     == NULL) {
1052                     ERR_clear_error();
1053                     value = NULL;
1054                 }
1055
1056                 if (!join(buf, sizeof(buf), type,"_min", "Name"))
1057                     return 0;
1058                 if (!NCONF_get_number(req_conf, attr_sect, buf, &n_min)) {
1059                     ERR_clear_error();
1060                     n_min = -1;
1061                 }
1062
1063                 if (!join(buf, sizeof(buf), type, "_max", "Name"))
1064                     return 0;
1065                 if (!NCONF_get_number(req_conf, attr_sect, buf, &n_max)) {
1066                     ERR_clear_error();
1067                     n_max = -1;
1068                 }
1069
1070                 if (!add_attribute_object(req,
1071                                           v->value, def, value, nid, n_min,
1072                                           n_max, chtype))
1073                     return 0;
1074             }
1075         }
1076     } else {
1077         BIO_printf(bio_err, "No template, please set one up.\n");
1078         return 0;
1079     }
1080
1081     return 1;
1082
1083 }
1084
1085 static int auto_info(X509_REQ *req, STACK_OF(CONF_VALUE) *dn_sk,
1086                      STACK_OF(CONF_VALUE) *attr_sk, int attribs,
1087                      unsigned long chtype)
1088 {
1089     int i, spec_char, plus_char;
1090     char *p, *q;
1091     char *type;
1092     CONF_VALUE *v;
1093     X509_NAME *subj;
1094
1095     subj = X509_REQ_get_subject_name(req);
1096
1097     for (i = 0; i < sk_CONF_VALUE_num(dn_sk); i++) {
1098         int mval;
1099         v = sk_CONF_VALUE_value(dn_sk, i);
1100         p = q = NULL;
1101         type = v->name;
1102         /*
1103          * Skip past any leading X. X: X, etc to allow for multiple instances
1104          */
1105         for (p = v->name; *p; p++) {
1106 #ifndef CHARSET_EBCDIC
1107             spec_char = ((*p == ':') || (*p == ',') || (*p == '.'));
1108 #else
1109             spec_char = ((*p == os_toascii[':']) || (*p == os_toascii[','])
1110                     || (*p == os_toascii['.']));
1111 #endif
1112             if (spec_char) {
1113                 p++;
1114                 if (*p)
1115                     type = p;
1116                 break;
1117             }
1118         }
1119 #ifndef CHARSET_EBCDIC
1120         plus_char = (*type == '+');
1121 #else
1122         plus_char = (*type == os_toascii['+']);
1123 #endif
1124         if (plus_char) {
1125             type++;
1126             mval = -1;
1127         } else {
1128             mval = 0;
1129         }
1130         if (!X509_NAME_add_entry_by_txt(subj, type, chtype,
1131                                         (unsigned char *)v->value, -1, -1,
1132                                         mval))
1133             return 0;
1134
1135     }
1136
1137     if (!X509_NAME_entry_count(subj)) {
1138         BIO_printf(bio_err, "error, no objects specified in config file\n");
1139         return 0;
1140     }
1141     if (attribs) {
1142         for (i = 0; i < sk_CONF_VALUE_num(attr_sk); i++) {
1143             v = sk_CONF_VALUE_value(attr_sk, i);
1144             if (!X509_REQ_add1_attr_by_txt(req, v->name, chtype,
1145                                            (unsigned char *)v->value, -1))
1146                 return 0;
1147         }
1148     }
1149     return 1;
1150 }
1151
1152 static int add_DN_object(X509_NAME *n, char *text, const char *def,
1153                          char *value, int nid, int n_min, int n_max,
1154                          unsigned long chtype, int mval)
1155 {
1156     int i, ret = 0;
1157     char buf[1024];
1158  start:
1159     if (!batch)
1160         BIO_printf(bio_err, "%s [%s]:", text, def);
1161     (void)BIO_flush(bio_err);
1162     if (value != NULL) {
1163         if (!join(buf, sizeof(buf), value, "\n", "DN value"))
1164             return 0;
1165         BIO_printf(bio_err, "%s\n", value);
1166     } else {
1167         buf[0] = '\0';
1168         if (!batch) {
1169             if (!fgets(buf, sizeof buf, stdin))
1170                 return 0;
1171         } else {
1172             buf[0] = '\n';
1173             buf[1] = '\0';
1174         }
1175     }
1176
1177     if (buf[0] == '\0')
1178         return 0;
1179     if (buf[0] == '\n') {
1180         if ((def == NULL) || (def[0] == '\0'))
1181             return 1;
1182         if (!join(buf, sizeof(buf), def, "\n", "DN default"))
1183             return 0;
1184     } else if ((buf[0] == '.') && (buf[1] == '\n')) {
1185         return 1;
1186     }
1187
1188     i = strlen(buf);
1189     if (buf[i - 1] != '\n') {
1190         BIO_printf(bio_err, "weird input :-(\n");
1191         return 0;
1192     }
1193     buf[--i] = '\0';
1194 #ifdef CHARSET_EBCDIC
1195     ebcdic2ascii(buf, buf, i);
1196 #endif
1197     if (!req_check_len(i, n_min, n_max)) {
1198         if (batch || value)
1199             return 0;
1200         goto start;
1201     }
1202
1203     if (!X509_NAME_add_entry_by_NID(n, nid, chtype,
1204                                     (unsigned char *)buf, -1, -1, mval))
1205         goto err;
1206     ret = 1;
1207  err:
1208     return ret;
1209 }
1210
1211 static int add_attribute_object(X509_REQ *req, char *text, const char *def,
1212                                 char *value, int nid, int n_min,
1213                                 int n_max, unsigned long chtype)
1214 {
1215     int i;
1216     static char buf[1024];
1217
1218  start:
1219     if (!batch)
1220         BIO_printf(bio_err, "%s [%s]:", text, def);
1221     (void)BIO_flush(bio_err);
1222     if (value != NULL) {
1223         if (!join(buf, sizeof(buf), value, "\n", "Attribute value"))
1224             return 0;
1225         BIO_printf(bio_err, "%s\n", value);
1226     } else {
1227         buf[0] = '\0';
1228         if (!batch) {
1229             if (!fgets(buf, sizeof buf, stdin))
1230                 return 0;
1231         } else {
1232             buf[0] = '\n';
1233             buf[1] = '\0';
1234         }
1235     }
1236
1237     if (buf[0] == '\0')
1238         return 0;
1239     if (buf[0] == '\n') {
1240         if ((def == NULL) || (def[0] == '\0'))
1241             return 1;
1242         if (!join(buf, sizeof(buf), def, "\n", "Attribute default"))
1243             return 0;
1244     } else if ((buf[0] == '.') && (buf[1] == '\n')) {
1245         return 1;
1246     }
1247
1248     i = strlen(buf);
1249     if (buf[i - 1] != '\n') {
1250         BIO_printf(bio_err, "weird input :-(\n");
1251         return 0;
1252     }
1253     buf[--i] = '\0';
1254 #ifdef CHARSET_EBCDIC
1255     ebcdic2ascii(buf, buf, i);
1256 #endif
1257     if (!req_check_len(i, n_min, n_max)) {
1258         if (batch || value)
1259             return 0;
1260         goto start;
1261     }
1262
1263     if (!X509_REQ_add1_attr_by_NID(req, nid, chtype,
1264                                    (unsigned char *)buf, -1)) {
1265         BIO_printf(bio_err, "Error adding attribute\n");
1266         ERR_print_errors(bio_err);
1267         goto err;
1268     }
1269
1270     return 1;
1271  err:
1272     return 0;
1273 }
1274
1275 static int req_check_len(int len, int n_min, int n_max)
1276 {
1277     if ((n_min > 0) && (len < n_min)) {
1278         BIO_printf(bio_err,
1279                    "string is too short, it needs to be at least %d bytes long\n",
1280                    n_min);
1281         return 0;
1282     }
1283     if ((n_max >= 0) && (len > n_max)) {
1284         BIO_printf(bio_err,
1285                    "string is too long, it needs to be no more than %d bytes long\n",
1286                    n_max);
1287         return 0;
1288     }
1289     return 1;
1290 }
1291
1292 /* Check if the end of a string matches 'end' */
1293 static int check_end(const char *str, const char *end)
1294 {
1295     size_t elen, slen;
1296     const char *tmp;
1297
1298     elen = strlen(end);
1299     slen = strlen(str);
1300     if (elen > slen)
1301         return 1;
1302     tmp = str + slen - elen;
1303     return strcmp(tmp, end);
1304 }
1305
1306 /*
1307  * Merge the two strings together into the result buffer checking for
1308  * overflow and producing an error message if there is.
1309  */
1310 static int join(char buf[], size_t buf_size, const char *name,
1311                 const char *tail, const char *desc)
1312 {
1313     const size_t name_len = strlen(name), tail_len = strlen(tail);
1314
1315     if (name_len + tail_len + 1 > buf_size) {
1316         BIO_printf(bio_err, "%s '%s' too long\n", desc, name);
1317         return 0;
1318     }
1319     memcpy(buf, name, name_len);
1320     memcpy(buf + name_len, tail, tail_len + 1);
1321     return 1;
1322 }
1323
1324 static EVP_PKEY_CTX *set_keygen_ctx(const char *gstr,
1325                                     int *pkey_type, long *pkeylen,
1326                                     char **palgnam, ENGINE *keygen_engine)
1327 {
1328     EVP_PKEY_CTX *gctx = NULL;
1329     EVP_PKEY *param = NULL;
1330     long keylen = -1;
1331     BIO *pbio = NULL;
1332     const char *paramfile = NULL;
1333
1334     if (gstr == NULL) {
1335         *pkey_type = EVP_PKEY_RSA;
1336         keylen = *pkeylen;
1337     } else if (gstr[0] >= '0' && gstr[0] <= '9') {
1338         *pkey_type = EVP_PKEY_RSA;
1339         keylen = atol(gstr);
1340         *pkeylen = keylen;
1341     } else if (strncmp(gstr, "param:", 6) == 0) {
1342         paramfile = gstr + 6;
1343     } else {
1344         const char *p = strchr(gstr, ':');
1345         int len;
1346         ENGINE *tmpeng;
1347         const EVP_PKEY_ASN1_METHOD *ameth;
1348
1349         if (p != NULL)
1350             len = p - gstr;
1351         else
1352             len = strlen(gstr);
1353         /*
1354          * The lookup of a the string will cover all engines so keep a note
1355          * of the implementation.
1356          */
1357
1358         ameth = EVP_PKEY_asn1_find_str(&tmpeng, gstr, len);
1359
1360         if (ameth == NULL) {
1361             BIO_printf(bio_err, "Unknown algorithm %.*s\n", len, gstr);
1362             return NULL;
1363         }
1364
1365         EVP_PKEY_asn1_get0_info(NULL, pkey_type, NULL, NULL, NULL, ameth);
1366 #ifndef OPENSSL_NO_ENGINE
1367         ENGINE_finish(tmpeng);
1368 #endif
1369         if (*pkey_type == EVP_PKEY_RSA) {
1370             if (p != NULL) {
1371                 keylen = atol(p + 1);
1372                 *pkeylen = keylen;
1373             } else {
1374                 keylen = *pkeylen;
1375             }
1376         } else if (p != NULL) {
1377             paramfile = p + 1;
1378         }
1379     }
1380
1381     if (paramfile != NULL) {
1382         pbio = BIO_new_file(paramfile, "r");
1383         if (pbio == NULL) {
1384             BIO_printf(bio_err, "Can't open parameter file %s\n", paramfile);
1385             return NULL;
1386         }
1387         param = PEM_read_bio_Parameters(pbio, NULL);
1388
1389         if (param == NULL) {
1390             X509 *x;
1391
1392             (void)BIO_reset(pbio);
1393             x = PEM_read_bio_X509(pbio, NULL, NULL, NULL);
1394             if (x != NULL) {
1395                 param = X509_get_pubkey(x);
1396                 X509_free(x);
1397             }
1398         }
1399
1400         BIO_free(pbio);
1401
1402         if (param == NULL) {
1403             BIO_printf(bio_err, "Error reading parameter file %s\n", paramfile);
1404             return NULL;
1405         }
1406         if (*pkey_type == -1) {
1407             *pkey_type = EVP_PKEY_id(param);
1408         } else if (*pkey_type != EVP_PKEY_base_id(param)) {
1409             BIO_printf(bio_err, "Key Type does not match parameters\n");
1410             EVP_PKEY_free(param);
1411             return NULL;
1412         }
1413     }
1414
1415     if (palgnam != NULL) {
1416         const EVP_PKEY_ASN1_METHOD *ameth;
1417         ENGINE *tmpeng;
1418         const char *anam;
1419
1420         ameth = EVP_PKEY_asn1_find(&tmpeng, *pkey_type);
1421         if (ameth == NULL) {
1422             BIO_puts(bio_err, "Internal error: can't find key algorithm\n");
1423             return NULL;
1424         }
1425         EVP_PKEY_asn1_get0_info(NULL, NULL, NULL, NULL, &anam, ameth);
1426         *palgnam = OPENSSL_strdup(anam);
1427 #ifndef OPENSSL_NO_ENGINE
1428         ENGINE_finish(tmpeng);
1429 #endif
1430     }
1431
1432     if (param != NULL) {
1433         gctx = EVP_PKEY_CTX_new(param, keygen_engine);
1434         *pkeylen = EVP_PKEY_bits(param);
1435         EVP_PKEY_free(param);
1436     } else {
1437         gctx = EVP_PKEY_CTX_new_id(*pkey_type, keygen_engine);
1438     }
1439
1440     if (gctx == NULL) {
1441         BIO_puts(bio_err, "Error allocating keygen context\n");
1442         ERR_print_errors(bio_err);
1443         return NULL;
1444     }
1445
1446     if (EVP_PKEY_keygen_init(gctx) <= 0) {
1447         BIO_puts(bio_err, "Error initializing keygen context\n");
1448         ERR_print_errors(bio_err);
1449         EVP_PKEY_CTX_free(gctx);
1450         return NULL;
1451     }
1452 #ifndef OPENSSL_NO_RSA
1453     if ((*pkey_type == EVP_PKEY_RSA) && (keylen != -1)) {
1454         if (EVP_PKEY_CTX_set_rsa_keygen_bits(gctx, keylen) <= 0) {
1455             BIO_puts(bio_err, "Error setting RSA keysize\n");
1456             ERR_print_errors(bio_err);
1457             EVP_PKEY_CTX_free(gctx);
1458             return NULL;
1459         }
1460     }
1461 #endif
1462
1463     return gctx;
1464 }
1465
1466 static int genpkey_cb(EVP_PKEY_CTX *ctx)
1467 {
1468     char c = '*';
1469     BIO *b = EVP_PKEY_CTX_get_app_data(ctx);
1470     int p;
1471     p = EVP_PKEY_CTX_get_keygen_info(ctx, 0);
1472     if (p == 0)
1473         c = '.';
1474     if (p == 1)
1475         c = '+';
1476     if (p == 2)
1477         c = '*';
1478     if (p == 3)
1479         c = '\n';
1480     BIO_write(b, &c, 1);
1481     (void)BIO_flush(b);
1482     return 1;
1483 }
1484
1485 static int do_sign_init(EVP_MD_CTX *ctx, EVP_PKEY *pkey,
1486                         const EVP_MD *md, STACK_OF(OPENSSL_STRING) *sigopts)
1487 {
1488     EVP_PKEY_CTX *pkctx = NULL;
1489     int i;
1490
1491     if (ctx == NULL)
1492         return 0;
1493     if (!EVP_DigestSignInit(ctx, &pkctx, md, NULL, pkey))
1494         return 0;
1495     for (i = 0; i < sk_OPENSSL_STRING_num(sigopts); i++) {
1496         char *sigopt = sk_OPENSSL_STRING_value(sigopts, i);
1497         if (pkey_ctrl_string(pkctx, sigopt) <= 0) {
1498             BIO_printf(bio_err, "parameter error \"%s\"\n", sigopt);
1499             ERR_print_errors(bio_err);
1500             return 0;
1501         }
1502     }
1503     return 1;
1504 }
1505
1506 int do_X509_sign(X509 *x, EVP_PKEY *pkey, const EVP_MD *md,
1507                  STACK_OF(OPENSSL_STRING) *sigopts)
1508 {
1509     int rv;
1510     EVP_MD_CTX *mctx = EVP_MD_CTX_new();
1511
1512     rv = do_sign_init(mctx, pkey, md, sigopts);
1513     if (rv > 0)
1514         rv = X509_sign_ctx(x, mctx);
1515     EVP_MD_CTX_free(mctx);
1516     return rv > 0 ? 1 : 0;
1517 }
1518
1519 int do_X509_REQ_sign(X509_REQ *x, EVP_PKEY *pkey, const EVP_MD *md,
1520                      STACK_OF(OPENSSL_STRING) *sigopts)
1521 {
1522     int rv;
1523     EVP_MD_CTX *mctx = EVP_MD_CTX_new();
1524     rv = do_sign_init(mctx, pkey, md, sigopts);
1525     if (rv > 0)
1526         rv = X509_REQ_sign_ctx(x, mctx);
1527     EVP_MD_CTX_free(mctx);
1528     return rv > 0 ? 1 : 0;
1529 }
1530
1531 int do_X509_CRL_sign(X509_CRL *x, EVP_PKEY *pkey, const EVP_MD *md,
1532                      STACK_OF(OPENSSL_STRING) *sigopts)
1533 {
1534     int rv;
1535     EVP_MD_CTX *mctx = EVP_MD_CTX_new();
1536     rv = do_sign_init(mctx, pkey, md, sigopts);
1537     if (rv > 0)
1538         rv = X509_CRL_sign_ctx(x, mctx);
1539     EVP_MD_CTX_free(mctx);
1540     return rv > 0 ? 1 : 0;
1541 }