apps/req.c

   1 /*
   2  * Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the Apache License 2.0 (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 <ctype.h>
  15 #include "apps.h"
  16 #include "progs.h"
  17 #include <openssl/bio.h>
  18 #include <openssl/evp.h>
  19 #include <openssl/conf.h>
  20 #include <openssl/err.h>
  21 #include <openssl/asn1.h>
  22 #include <openssl/x509.h>
  23 #include <openssl/x509v3.h>
  24 #include <openssl/objects.h>
  25 #include <openssl/pem.h>
  26 #include <openssl/bn.h>
  27 #include <openssl/lhash.h>
  28 #include <openssl/rsa.h>
  29 #ifndef OPENSSL_NO_DSA
  30 # include <openssl/dsa.h>
  31 #endif
  32
  33 #define BITS            "default_bits"
  34 #define KEYFILE         "default_keyfile"
  35 #define PROMPT          "prompt"
  36 #define DISTINGUISHED_NAME      "distinguished_name"
  37 #define ATTRIBUTES      "attributes"
  38 #define V3_EXTENSIONS   "x509_extensions"
  39 #define REQ_EXTENSIONS  "req_extensions"
  40 #define STRING_MASK     "string_mask"
  41 #define UTF8_IN         "utf8"
  42
  43 #define DEFAULT_KEY_LENGTH      2048
  44 #define MIN_KEY_LENGTH          512
  45
  46 static int make_REQ(X509_REQ *req, EVP_PKEY *pkey, char *dn, int mutlirdn,
  47                     int attribs, unsigned long chtype);
  48 static int build_subject(X509_REQ *req, const char *subj, unsigned long chtype,
  49                          int multirdn);
  50 static int prompt_info(X509_REQ *req,
  51                        STACK_OF(CONF_VALUE) *dn_sk, const char *dn_sect,
  52                        STACK_OF(CONF_VALUE) *attr_sk, const char *attr_sect,
  53                        int attribs, unsigned long chtype);
  54 static int auto_info(X509_REQ *req, STACK_OF(CONF_VALUE) *sk,
  55                      STACK_OF(CONF_VALUE) *attr, int attribs,
  56                      unsigned long chtype);
  57 static int add_attribute_object(X509_REQ *req, char *text, const char *def,
  58                                 char *value, int nid, int n_min, int n_max,
  59                                 unsigned long chtype);
  60 static int add_DN_object(X509_NAME *n, char *text, const char *def,
  61                          char *value, int nid, int n_min, int n_max,
  62                          unsigned long chtype, int mval);
  63 static int genpkey_cb(EVP_PKEY_CTX *ctx);
  64 static int build_data(char *text, const char *def,
  65                       char *value, int n_min, int n_max,
  66                       char *buf, const int buf_size,
  67                       const char *desc1, const char *desc2
  68                       );
  69 static int req_check_len(int len, int n_min, int n_max);
  70 static int check_end(const char *str, const char *end);
  71 static int join(char buf[], size_t buf_size, const char *name,
  72                 const char *tail, const char *desc);
  73 static EVP_PKEY_CTX *set_keygen_ctx(const char *gstr,
  74                                     int *pkey_type, long *pkeylen,
  75                                     char **palgnam, ENGINE *keygen_engine);
  76
  77 static const char *section = "req";
  78 static CONF *req_conf = NULL;
  79 static CONF *addext_conf = NULL;
  80 static int batch = 0;
  81
  82 typedef enum OPTION_choice {
  83     OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
  84     OPT_INFORM, OPT_OUTFORM, OPT_ENGINE, OPT_KEYGEN_ENGINE, OPT_KEY,
  85     OPT_PUBKEY, OPT_NEW, OPT_CONFIG, OPT_KEYFORM, OPT_IN, OPT_OUT,
  86     OPT_KEYOUT, OPT_PASSIN, OPT_PASSOUT, OPT_NEWKEY,
  87     OPT_PKEYOPT, OPT_SIGOPT, OPT_VFYOPT, OPT_BATCH, OPT_NEWHDR, OPT_MODULUS,
  88     OPT_VERIFY, OPT_NOENC, OPT_NODES, OPT_NOOUT, OPT_VERBOSE, OPT_UTF8,
  89     OPT_NAMEOPT, OPT_REQOPT, OPT_SUBJ, OPT_SUBJECT, OPT_TEXT, OPT_X509,
  90     OPT_MULTIVALUE_RDN, OPT_DAYS, OPT_SET_SERIAL, OPT_ADDEXT, OPT_EXTENSIONS,
  91     OPT_REQEXTS, OPT_PRECERT, OPT_MD,
  92     OPT_SECTION,
  93     OPT_R_ENUM, OPT_PROV_ENUM
  94 } OPTION_CHOICE;
  95
  96 const OPTIONS req_options[] = {
  97     OPT_SECTION("General"),
  98     {"help", OPT_HELP, '-', "Display this summary"},
  99 #ifndef OPENSSL_NO_ENGINE
 100     {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
 101     {"keygen_engine", OPT_KEYGEN_ENGINE, 's',
 102      "Specify engine to be used for key generation operations"},
 103 #endif
 104     {"in", OPT_IN, '<', "Input file"},
 105     {"inform", OPT_INFORM, 'F', "Input format - DER or PEM"},
 106     {"verify", OPT_VERIFY, '-', "Verify signature on REQ"},
 107
 108     OPT_SECTION("Certificate"),
 109     {"new", OPT_NEW, '-', "New request"},
 110     {"config", OPT_CONFIG, '<', "Request template file"},
 111     {"section", OPT_SECTION, 's', "Config section to use (default \"req\")"},
 112     {"utf8", OPT_UTF8, '-', "Input characters are UTF8 (default ASCII)"},
 113     {"nameopt", OPT_NAMEOPT, 's', "Certificate subject/issuer name printing options"},
 114     {"reqopt", OPT_REQOPT, 's', "Various request text options"},
 115     {"text", OPT_TEXT, '-', "Text form of request"},
 116     {"x509", OPT_X509, '-',
 117      "Output an 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      "Deprecated; multi-valued RDNs support is always on."},
 123     {"days", OPT_DAYS, 'p', "Number of days cert is valid for"},
 124     {"set_serial", OPT_SET_SERIAL, 's', "Serial number to use"},
 125     {"addext", OPT_ADDEXT, 's',
 126      "Additional cert extension key=value pair (may be given more than once)"},
 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
 133     OPT_SECTION("Keys and Signing"),
 134     {"key", OPT_KEY, 's', "Private key to use"},
 135     {"keyform", OPT_KEYFORM, 'f', "Key file format (ENGINE, other values ignored)"},
 136     {"pubkey", OPT_PUBKEY, '-', "Output public key"},
 137     {"keyout", OPT_KEYOUT, '>', "File to send the key to"},
 138     {"passin", OPT_PASSIN, 's', "Private key password source"},
 139     {"passout", OPT_PASSOUT, 's', "Output file pass phrase source"},
 140     {"newkey", OPT_NEWKEY, 's', "Specify as type:bits"},
 141     {"pkeyopt", OPT_PKEYOPT, 's', "Public key options as opt:value"},
 142     {"sigopt", OPT_SIGOPT, 's', "Signature parameter in n:v form"},
 143     {"vfyopt", OPT_VFYOPT, 's', "Verification parameter in n:v form"},
 144     {"", OPT_MD, '-', "Any supported digest"},
 145
 146     OPT_SECTION("Output"),
 147     {"out", OPT_OUT, '>', "Output file"},
 148     {"outform", OPT_OUTFORM, 'F', "Output format - DER or PEM"},
 149     {"batch", OPT_BATCH, '-',
 150      "Do not ask anything during request generation"},
 151     {"verbose", OPT_VERBOSE, '-', "Verbose output"},
 152     {"noenc", OPT_NOENC, '-', "Don't encrypt private keys"},
 153     {"nodes", OPT_NODES, '-', "Don't encrypt private keys; deprecated"},
 154     {"noout", OPT_NOOUT, '-', "Do not output REQ"},
 155     {"newhdr", OPT_NEWHDR, '-', "Output \"NEW\" in the header lines"},
 156     {"modulus", OPT_MODULUS, '-', "RSA modulus"},
 157
 158     OPT_R_OPTIONS,
 159     OPT_PROV_OPTIONS,
 160     {NULL}
 161 };
 162
 163
 164 /*
 165  * An LHASH of strings, where each string is an extension name.
 166  */
 167 static unsigned long ext_name_hash(const OPENSSL_STRING *a)
 168 {
 169     return OPENSSL_LH_strhash((const char *)a);
 170 }
 171
 172 static int ext_name_cmp(const OPENSSL_STRING *a, const OPENSSL_STRING *b)
 173 {
 174     return strcmp((const char *)a, (const char *)b);
 175 }
 176
 177 static void exts_cleanup(OPENSSL_STRING *x)
 178 {
 179     OPENSSL_free((char *)x);
 180 }
 181
 182 /*
 183  * Is the |kv| key already duplicated?  This is remarkably tricky to get
 184  * right.  Return 0 if unique, -1 on runtime error; 1 if found or a syntax
 185  * error.
 186  */
 187 static int duplicated(LHASH_OF(OPENSSL_STRING) *addexts, char *kv)
 188 {
 189     char *p;
 190     size_t off;
 191
 192     /* Check syntax. */
 193     /* Skip leading whitespace, make a copy. */
 194     while (*kv && isspace(*kv))
 195         if (*++kv == '\0')
 196             return 1;
 197     if ((p = strchr(kv, '=')) == NULL)
 198         return 1;
 199     off = p - kv;
 200     if ((kv = OPENSSL_strdup(kv)) == NULL)
 201         return -1;
 202
 203     /* Skip trailing space before the equal sign. */
 204     for (p = kv + off; p > kv; --p)
 205         if (!isspace(p[-1]))
 206             break;
 207     if (p == kv) {
 208         OPENSSL_free(kv);
 209         return 1;
 210     }
 211     *p = '\0';
 212
 213     /* Finally have a clean "key"; see if it's there [by attempt to add it]. */
 214     p = (char *)lh_OPENSSL_STRING_insert(addexts, (OPENSSL_STRING*)kv);
 215     if (p != NULL) {
 216         OPENSSL_free(p);
 217         return 1;
 218     } else if (lh_OPENSSL_STRING_error(addexts)) {
 219         OPENSSL_free(kv);
 220         return -1;
 221     }
 222
 223     return 0;
 224 }
 225
 226 int req_main(int argc, char **argv)
 227 {
 228     ASN1_INTEGER *serial = NULL;
 229     BIO *out = NULL;
 230     ENGINE *e = NULL, *gen_eng = NULL;
 231     EVP_PKEY *pkey = NULL;
 232     EVP_PKEY_CTX *genctx = NULL;
 233     STACK_OF(OPENSSL_STRING) *pkeyopts = NULL, *sigopts = NULL, *vfyopts = NULL;
 234     LHASH_OF(OPENSSL_STRING) *addexts = NULL;
 235     X509 *x509ss = NULL;
 236     X509_REQ *req = NULL;
 237     const EVP_CIPHER *cipher = NULL;
 238     const EVP_MD *md_alg = NULL, *digest = NULL;
 239     BIO *addext_bio = NULL;
 240     char *extensions = NULL, *infile = NULL;
 241     char *outfile = NULL, *keyfile = NULL;
 242     char *keyalgstr = NULL, *p, *prog, *passargin = NULL, *passargout = NULL;
 243     char *passin = NULL, *passout = NULL;
 244     char *nofree_passin = NULL, *nofree_passout = NULL;
 245     char *req_exts = NULL, *subj = NULL;
 246     char *template = default_config_file, *keyout = NULL;
 247     const char *keyalg = NULL;
 248     OPTION_CHOICE o;
 249     int ret = 1, x509 = 0, days = 0, i = 0, newreq = 0, verbose = 0;
 250     int pkey_type = -1, private = 0;
 251     int informat = FORMAT_PEM, outformat = FORMAT_PEM, keyform = FORMAT_PEM;
 252     int modulus = 0, multirdn = 1, verify = 0, noout = 0, text = 0;
 253     int noenc = 0, newhdr = 0, subject = 0, pubkey = 0, precert = 0;
 254     long newkey = -1;
 255     unsigned long chtype = MBSTRING_ASC, reqflag = 0;
 256
 257 #ifndef OPENSSL_NO_DES
 258     cipher = EVP_des_ede3_cbc();
 259 #endif
 260
 261     prog = opt_init(argc, argv, req_options);
 262     while ((o = opt_next()) != OPT_EOF) {
 263         switch (o) {
 264         case OPT_EOF:
 265         case OPT_ERR:
 266  opthelp:
 267             BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
 268             goto end;
 269         case OPT_HELP:
 270             opt_help(req_options);
 271             ret = 0;
 272             goto end;
 273         case OPT_INFORM:
 274             if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &informat))
 275                 goto opthelp;
 276             break;
 277         case OPT_OUTFORM:
 278             if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &outformat))
 279                 goto opthelp;
 280             break;
 281         case OPT_ENGINE:
 282             e = setup_engine(opt_arg(), 0);
 283             break;
 284         case OPT_KEYGEN_ENGINE:
 285 #ifndef OPENSSL_NO_ENGINE
 286             gen_eng = setup_engine(opt_arg(), 0);
 287             if (gen_eng == NULL) {
 288                 BIO_printf(bio_err, "Can't find keygen engine %s\n", *argv);
 289                 goto opthelp;
 290             }
 291 #endif
 292             break;
 293         case OPT_KEY:
 294             keyfile = opt_arg();
 295             break;
 296         case OPT_PUBKEY:
 297             pubkey = 1;
 298             break;
 299         case OPT_NEW:
 300             newreq = 1;
 301             break;
 302         case OPT_CONFIG:
 303             template = opt_arg();
 304             break;
 305         case OPT_SECTION:
 306             section = opt_arg();
 307             break;
 308         case OPT_KEYFORM:
 309             if (!opt_format(opt_arg(), OPT_FMT_ANY, &keyform))
 310                 goto opthelp;
 311             break;
 312         case OPT_IN:
 313             infile = opt_arg();
 314             break;
 315         case OPT_OUT:
 316             outfile = opt_arg();
 317             break;
 318         case OPT_KEYOUT:
 319             keyout = opt_arg();
 320             break;
 321         case OPT_PASSIN:
 322             passargin = opt_arg();
 323             break;
 324         case OPT_PASSOUT:
 325             passargout = opt_arg();
 326             break;
 327         case OPT_R_CASES:
 328             if (!opt_rand(o))
 329                 goto end;
 330             break;
 331         case OPT_PROV_CASES:
 332             if (!opt_provider(o))
 333                 goto end;
 334             break;
 335         case OPT_NEWKEY:
 336             keyalg = opt_arg();
 337             newreq = 1;
 338             break;
 339         case OPT_PKEYOPT:
 340             if (pkeyopts == NULL)
 341                 pkeyopts = sk_OPENSSL_STRING_new_null();
 342             if (pkeyopts == NULL
 343                     || !sk_OPENSSL_STRING_push(pkeyopts, opt_arg()))
 344                 goto opthelp;
 345             break;
 346         case OPT_SIGOPT:
 347             if (!sigopts)
 348                 sigopts = sk_OPENSSL_STRING_new_null();
 349             if (!sigopts || !sk_OPENSSL_STRING_push(sigopts, opt_arg()))
 350                 goto opthelp;
 351             break;
 352         case OPT_VFYOPT:
 353             if (!vfyopts)
 354                 vfyopts = sk_OPENSSL_STRING_new_null();
 355             if (!vfyopts || !sk_OPENSSL_STRING_push(vfyopts, opt_arg()))
 356                 goto opthelp;
 357             break;
 358         case OPT_BATCH:
 359             batch = 1;
 360             break;
 361         case OPT_NEWHDR:
 362             newhdr = 1;
 363             break;
 364         case OPT_MODULUS:
 365             modulus = 1;
 366             break;
 367         case OPT_VERIFY:
 368             verify = 1;
 369             break;
 370         case OPT_NODES:
 371         case OPT_NOENC:
 372             noenc = 1;
 373             break;
 374         case OPT_NOOUT:
 375             noout = 1;
 376             break;
 377         case OPT_VERBOSE:
 378             verbose = 1;
 379             break;
 380         case OPT_UTF8:
 381             chtype = MBSTRING_UTF8;
 382             break;
 383         case OPT_NAMEOPT:
 384             if (!set_nameopt(opt_arg()))
 385                 goto opthelp;
 386             break;
 387         case OPT_REQOPT:
 388             if (!set_cert_ex(&reqflag, opt_arg()))
 389                 goto opthelp;
 390             break;
 391         case OPT_TEXT:
 392             text = 1;
 393             break;
 394         case OPT_X509:
 395             x509 = 1;
 396             break;
 397         case OPT_DAYS:
 398             days = atoi(opt_arg());
 399             break;
 400         case OPT_SET_SERIAL:
 401             if (serial != NULL) {
 402                 BIO_printf(bio_err, "Serial number supplied twice\n");
 403                 goto opthelp;
 404             }
 405             serial = s2i_ASN1_INTEGER(NULL, opt_arg());
 406             if (serial == NULL)
 407                 goto opthelp;
 408             break;
 409         case OPT_SUBJECT:
 410             subject = 1;
 411             break;
 412         case OPT_SUBJ:
 413             subj = opt_arg();
 414             break;
 415         case OPT_MULTIVALUE_RDN:
 416             /* obsolete */
 417             break;
 418         case OPT_ADDEXT:
 419             p = opt_arg();
 420             if (addexts == NULL) {
 421                 addexts = lh_OPENSSL_STRING_new(ext_name_hash, ext_name_cmp);
 422                 addext_bio = BIO_new(BIO_s_mem());
 423                 if (addexts == NULL || addext_bio == NULL)
 424                     goto end;
 425             }
 426             i = duplicated(addexts, p);
 427             if (i == 1) {
 428                 BIO_printf(bio_err, "Duplicate extension: %s\n", p);
 429                 goto opthelp;
 430             }
 431             if (i < 0 || BIO_printf(addext_bio, "%s\n", p) < 0)
 432                 goto end;
 433             break;
 434         case OPT_EXTENSIONS:
 435             extensions = opt_arg();
 436             break;
 437         case OPT_REQEXTS:
 438             req_exts = opt_arg();
 439             break;
 440         case OPT_PRECERT:
 441             newreq = precert = 1;
 442             break;
 443         case OPT_MD:
 444             if (!opt_md(opt_unknown(), &md_alg))
 445                 goto opthelp;
 446             digest = md_alg;
 447             break;
 448         }
 449     }
 450
 451     /* No extra arguments. */
 452     argc = opt_num_rest();
 453     if (argc != 0)
 454         goto opthelp;
 455
 456     if (days && !x509)
 457         BIO_printf(bio_err, "Ignoring -days; not generating a certificate\n");
 458     if (x509 && infile == NULL)
 459         newreq = 1;
 460
 461     /* TODO: simplify this as pkey is still always NULL here */
 462     private = newreq && (pkey == NULL) ? 1 : 0;
 463
 464     if (!app_passwd(passargin, passargout, &passin, &passout)) {
 465         BIO_printf(bio_err, "Error getting passwords\n");
 466         goto end;
 467     }
 468
 469     if (verbose)
 470         BIO_printf(bio_err, "Using configuration from %s\n", template);
 471     if ((req_conf = app_load_config(template)) == NULL)
 472         goto end;
 473     if (addext_bio != NULL) {
 474         if (verbose)
 475             BIO_printf(bio_err,
 476                        "Using additional configuration from -addext options\n");
 477         if ((addext_conf = app_load_config_bio(addext_bio, NULL)) == NULL)
 478             goto end;
 479     }
 480     if (template != default_config_file && !app_load_modules(req_conf))
 481         goto end;
 482
 483     if (req_conf != NULL) {
 484         p = NCONF_get_string(req_conf, NULL, "oid_file");
 485         if (p == NULL)
 486             ERR_clear_error();
 487         if (p != NULL) {
 488             BIO *oid_bio;
 489
 490             oid_bio = BIO_new_file(p, "r");
 491             if (oid_bio == NULL) {
 492                 /*-
 493                 BIO_printf(bio_err,"problems opening %s for extra oid's\n",p);
 494                 ERR_print_errors(bio_err);
 495                 */
 496             } else {
 497                 OBJ_create_objects(oid_bio);
 498                 BIO_free(oid_bio);
 499             }
 500         }
 501     }
 502     if (!add_oid_section(req_conf))
 503         goto end;
 504
 505     if (md_alg == NULL) {
 506         p = NCONF_get_string(req_conf, section, "default_md");
 507         if (p == NULL) {
 508             ERR_clear_error();
 509         } else {
 510             if (!opt_md(p, &md_alg))
 511                 goto opthelp;
 512             digest = md_alg;
 513         }
 514     }
 515
 516     if (extensions == NULL) {
 517         extensions = NCONF_get_string(req_conf, section, V3_EXTENSIONS);
 518         if (extensions == NULL)
 519             ERR_clear_error();
 520     }
 521     if (extensions != NULL) {
 522         /* Check syntax of file */
 523         X509V3_CTX ctx;
 524         X509V3_set_ctx_test(&ctx);
 525         X509V3_set_nconf(&ctx, req_conf);
 526         if (!X509V3_EXT_add_nconf(req_conf, &ctx, extensions, NULL)) {
 527             BIO_printf(bio_err,
 528                        "Error checking x509 extension section %s\n", extensions);
 529             goto end;
 530         }
 531     }
 532     if (addext_conf != NULL) {
 533         /* Check syntax of command line extensions */
 534         X509V3_CTX ctx;
 535         X509V3_set_ctx_test(&ctx);
 536         X509V3_set_nconf(&ctx, addext_conf);
 537         if (!X509V3_EXT_add_nconf(addext_conf, &ctx, "default", NULL)) {
 538             BIO_printf(bio_err, "Error checking extensions defined using -addext\n");
 539             goto end;
 540         }
 541     }
 542
 543     if (passin == NULL) {
 544         passin = nofree_passin =
 545             NCONF_get_string(req_conf, section, "input_password");
 546         if (passin == NULL)
 547             ERR_clear_error();
 548     }
 549
 550     if (passout == NULL) {
 551         passout = nofree_passout =
 552             NCONF_get_string(req_conf, section, "output_password");
 553         if (passout == NULL)
 554             ERR_clear_error();
 555     }
 556
 557     p = NCONF_get_string(req_conf, section, STRING_MASK);
 558     if (p == NULL)
 559         ERR_clear_error();
 560
 561     if (p != NULL && !ASN1_STRING_set_default_mask_asc(p)) {
 562         BIO_printf(bio_err, "Invalid global string mask setting %s\n", p);
 563         goto end;
 564     }
 565
 566     if (chtype != MBSTRING_UTF8) {
 567         p = NCONF_get_string(req_conf, section, UTF8_IN);
 568         if (p == NULL)
 569             ERR_clear_error();
 570         else if (strcmp(p, "yes") == 0)
 571             chtype = MBSTRING_UTF8;
 572     }
 573
 574     if (req_exts == NULL) {
 575         req_exts = NCONF_get_string(req_conf, section, REQ_EXTENSIONS);
 576         if (req_exts == NULL)
 577             ERR_clear_error();
 578     }
 579     if (req_exts != NULL) {
 580         /* Check syntax of file */
 581         X509V3_CTX ctx;
 582         X509V3_set_ctx_test(&ctx);
 583         X509V3_set_nconf(&ctx, req_conf);
 584         if (!X509V3_EXT_add_nconf(req_conf, &ctx, req_exts, NULL)) {
 585             BIO_printf(bio_err,
 586                        "Error checking request extension section %s\n",
 587                        req_exts);
 588             goto end;
 589         }
 590     }
 591
 592     if (keyfile != NULL) {
 593         pkey = load_key(keyfile, keyform, 0, passin, e, "private key");
 594         if (pkey == NULL)
 595             goto end;
 596         app_RAND_load_conf(req_conf, section);
 597     }
 598
 599     if (newreq && (pkey == NULL)) {
 600         app_RAND_load_conf(req_conf, section);
 601
 602         if (!NCONF_get_number(req_conf, section, BITS, &newkey)) {
 603             newkey = DEFAULT_KEY_LENGTH;
 604         }
 605
 606         if (keyalg != NULL) {
 607             genctx = set_keygen_ctx(keyalg, &pkey_type, &newkey,
 608                                     &keyalgstr, gen_eng);
 609             if (genctx == NULL)
 610                 goto end;
 611         }
 612
 613         if (newkey < MIN_KEY_LENGTH
 614             && (pkey_type == EVP_PKEY_RSA || pkey_type == EVP_PKEY_DSA)) {
 615             BIO_printf(bio_err, "private key length is too short,\n");
 616             BIO_printf(bio_err, "it needs to be at least %d bits, not %ld\n",
 617                        MIN_KEY_LENGTH, newkey);
 618             goto end;
 619         }
 620
 621         if (pkey_type == EVP_PKEY_RSA && newkey > OPENSSL_RSA_MAX_MODULUS_BITS)
 622             BIO_printf(bio_err,
 623                        "Warning: It is not recommended to use more than %d bit for RSA keys.\n"
 624                        "         Your key size is %ld! Larger key size may behave not as expected.\n",
 625                        OPENSSL_RSA_MAX_MODULUS_BITS, newkey);
 626
 627 #ifndef OPENSSL_NO_DSA
 628         if (pkey_type == EVP_PKEY_DSA && newkey > OPENSSL_DSA_MAX_MODULUS_BITS)
 629             BIO_printf(bio_err,
 630                        "Warning: It is not recommended to use more than %d bit for DSA keys.\n"
 631                        "         Your key size is %ld! Larger key size may behave not as expected.\n",
 632                        OPENSSL_DSA_MAX_MODULUS_BITS, newkey);
 633 #endif
 634
 635         if (genctx == NULL) {
 636             genctx = set_keygen_ctx(NULL, &pkey_type, &newkey,
 637                                     &keyalgstr, gen_eng);
 638             if (!genctx)
 639                 goto end;
 640         }
 641
 642         if (pkeyopts != NULL) {
 643             char *genopt;
 644             for (i = 0; i < sk_OPENSSL_STRING_num(pkeyopts); i++) {
 645                 genopt = sk_OPENSSL_STRING_value(pkeyopts, i);
 646                 if (pkey_ctrl_string(genctx, genopt) <= 0) {
 647                     BIO_printf(bio_err, "parameter error \"%s\"\n", genopt);
 648                     ERR_print_errors(bio_err);
 649                     goto end;
 650                 }
 651             }
 652         }
 653
 654         if (pkey_type == EVP_PKEY_EC) {
 655             BIO_printf(bio_err, "Generating an EC private key\n");
 656         } else {
 657             BIO_printf(bio_err, "Generating a %s private key\n", keyalgstr);
 658         }
 659
 660         EVP_PKEY_CTX_set_cb(genctx, genpkey_cb);
 661         EVP_PKEY_CTX_set_app_data(genctx, bio_err);
 662
 663         if (EVP_PKEY_keygen(genctx, &pkey) <= 0) {
 664             BIO_puts(bio_err, "Error generating key\n");
 665             goto end;
 666         }
 667
 668         EVP_PKEY_CTX_free(genctx);
 669         genctx = NULL;
 670
 671         if (keyout == NULL) {
 672             keyout = NCONF_get_string(req_conf, section, KEYFILE);
 673             if (keyout == NULL)
 674                 ERR_clear_error();
 675         }
 676
 677         if (keyout == NULL)
 678             BIO_printf(bio_err, "writing new private key to stdout\n");
 679         else
 680             BIO_printf(bio_err, "writing new private key to '%s'\n", keyout);
 681         out = bio_open_owner(keyout, outformat, private);
 682         if (out == NULL)
 683             goto end;
 684
 685         p = NCONF_get_string(req_conf, section, "encrypt_rsa_key");
 686         if (p == NULL) {
 687             ERR_clear_error();
 688             p = NCONF_get_string(req_conf, section, "encrypt_key");
 689             if (p == NULL)
 690                 ERR_clear_error();
 691         }
 692         if ((p != NULL) && (strcmp(p, "no") == 0))
 693             cipher = NULL;
 694         if (noenc)
 695             cipher = NULL;
 696
 697         i = 0;
 698  loop:
 699         assert(private);
 700         if (!PEM_write_bio_PrivateKey(out, pkey, cipher,
 701                                       NULL, 0, NULL, passout)) {
 702             if ((ERR_GET_REASON(ERR_peek_error()) ==
 703                  PEM_R_PROBLEMS_GETTING_PASSWORD) && (i < 3)) {
 704                 ERR_clear_error();
 705                 i++;
 706                 goto loop;
 707             }
 708             goto end;
 709         }
 710         BIO_free(out);
 711         out = NULL;
 712         BIO_printf(bio_err, "-----\n");
 713     }
 714
 715     if (!newreq) {
 716         req = load_csr(infile, informat, "X509 request");
 717         if (req == NULL)
 718             goto end;
 719     }
 720
 721     if (newreq || x509) {
 722         if (pkey == NULL) {
 723             BIO_printf(bio_err, "you need to specify a private key\n");
 724             goto end;
 725         }
 726
 727         if (req == NULL) {
 728             req = X509_REQ_new();
 729             if (req == NULL) {
 730                 goto end;
 731             }
 732
 733             i = make_REQ(req, pkey, subj, multirdn, !x509, chtype);
 734             subj = NULL;        /* done processing '-subj' option */
 735             if (!i) {
 736                 BIO_printf(bio_err, "problems making Certificate Request\n");
 737                 goto end;
 738             }
 739         }
 740         if (x509) {
 741             EVP_PKEY *tmppkey;
 742             X509V3_CTX ext_ctx;
 743             if ((x509ss = X509_new_ex(app_get0_libctx(), app_get0_propq())) == NULL)
 744                 goto end;
 745
 746             /* Set version to V3 */
 747             if (serial != NULL) {
 748                 if (!X509_set_serialNumber(x509ss, serial))
 749                     goto end;
 750             } else {
 751                 if (!rand_serial(NULL, X509_get_serialNumber(x509ss)))
 752                     goto end;
 753             }
 754
 755             if (!X509_set_issuer_name(x509ss, X509_REQ_get_subject_name(req)))
 756                 goto end;
 757             if (days == 0) {
 758                 /* set default days if it's not specified */
 759                 days = 30;
 760             }
 761             if (!set_cert_times(x509ss, NULL, NULL, days))
 762                 goto end;
 763             if (!X509_set_subject_name
 764                 (x509ss, X509_REQ_get_subject_name(req)))
 765                 goto end;
 766             tmppkey = X509_REQ_get0_pubkey(req);
 767             if (!tmppkey || !X509_set_pubkey(x509ss, tmppkey))
 768                 goto end;
 769
 770             /* Set up V3 context struct */
 771
 772             X509V3_set_ctx(&ext_ctx, x509ss, x509ss, NULL, NULL, X509V3_CTX_REPLACE);
 773             X509V3_set_nconf(&ext_ctx, req_conf);
 774
 775             /* Add extensions */
 776             if (extensions != NULL && !X509V3_EXT_add_nconf(req_conf,
 777                                                             &ext_ctx, extensions,
 778                                                             x509ss)) {
 779                 BIO_printf(bio_err, "Error adding x509 extensions from section %s\n",
 780                            extensions);
 781                 goto end;
 782             }
 783             if (addext_conf != NULL
 784                 && !X509V3_EXT_add_nconf(addext_conf, &ext_ctx, "default",
 785                                          x509ss)) {
 786                 BIO_printf(bio_err, "Error adding extensions defined via -addext\n");
 787                 goto end;
 788             }
 789
 790             /* If a pre-cert was requested, we need to add a poison extension */
 791             if (precert) {
 792                 if (X509_add1_ext_i2d(x509ss, NID_ct_precert_poison, NULL, 1, 0)
 793                     != 1) {
 794                     BIO_printf(bio_err, "Error adding poison extension\n");
 795                     goto end;
 796                 }
 797             }
 798
 799             i = do_X509_sign(x509ss, pkey, digest, sigopts, &ext_ctx);
 800             if (!i) {
 801                 ERR_print_errors(bio_err);
 802                 goto end;
 803             }
 804         } else {
 805             X509V3_CTX ext_ctx;
 806
 807             /* Set up V3 context struct */
 808
 809             X509V3_set_ctx(&ext_ctx, NULL, NULL, req, NULL, 0);
 810             X509V3_set_nconf(&ext_ctx, req_conf);
 811
 812             /* Add extensions */
 813             if (req_exts != NULL
 814                 && !X509V3_EXT_REQ_add_nconf(req_conf, &ext_ctx,
 815                                              req_exts, req)) {
 816                 BIO_printf(bio_err, "Error adding request extensions from section %s\n",
 817                            req_exts);
 818                 goto end;
 819             }
 820             if (addext_conf != NULL
 821                 && !X509V3_EXT_REQ_add_nconf(addext_conf, &ext_ctx, "default",
 822                                              req)) {
 823                 BIO_printf(bio_err, "Error adding extensions defined via -addext\n");
 824                 goto end;
 825             }
 826             i = do_X509_REQ_sign(req, pkey, digest, sigopts);
 827             if (!i) {
 828                 ERR_print_errors(bio_err);
 829                 goto end;
 830             }
 831         }
 832     }
 833
 834     if (subj && x509) {
 835         BIO_printf(bio_err, "Cannot modify certificate subject\n");
 836         goto end;
 837     }
 838
 839     if (subj && !x509) {
 840         if (verbose) {
 841             BIO_printf(bio_err, "Modifying Request's Subject\n");
 842             print_name(bio_err, "old subject=",
 843                        X509_REQ_get_subject_name(req), get_nameopt());
 844         }
 845
 846         if (build_subject(req, subj, chtype, multirdn) == 0) {
 847             BIO_printf(bio_err, "ERROR: cannot modify subject\n");
 848             ret = 1;
 849             goto end;
 850         }
 851
 852         if (verbose) {
 853             print_name(bio_err, "new subject=",
 854                        X509_REQ_get_subject_name(req), get_nameopt());
 855         }
 856     }
 857
 858     if (verify && !x509) {
 859         EVP_PKEY *tpubkey = pkey;
 860
 861         if (tpubkey == NULL) {
 862             tpubkey = X509_REQ_get0_pubkey(req);
 863             if (tpubkey == NULL)
 864                 goto end;
 865         }
 866
 867         i = do_X509_REQ_verify(req, tpubkey, vfyopts);
 868
 869         if (i < 0) {
 870             goto end;
 871         } else if (i == 0) {
 872             BIO_printf(bio_err, "verify failure\n");
 873             ERR_print_errors(bio_err);
 874         } else {                 /* if (i > 0) */
 875             BIO_printf(bio_err, "verify OK\n");
 876         }
 877     }
 878
 879     if (noout && !text && !modulus && !subject && !pubkey) {
 880         ret = 0;
 881         goto end;
 882     }
 883
 884     out = bio_open_default(outfile,
 885                            keyout != NULL && outfile != NULL &&
 886                            strcmp(keyout, outfile) == 0 ? 'a' : 'w',
 887                            outformat);
 888     if (out == NULL)
 889         goto end;
 890
 891     if (pubkey) {
 892         EVP_PKEY *tpubkey = X509_REQ_get0_pubkey(req);
 893
 894         if (tpubkey == NULL) {
 895             BIO_printf(bio_err, "Error getting public key\n");
 896             ERR_print_errors(bio_err);
 897             goto end;
 898         }
 899         PEM_write_bio_PUBKEY(out, tpubkey);
 900     }
 901
 902     if (text) {
 903         if (x509)
 904             ret = X509_print_ex(out, x509ss, get_nameopt(), reqflag);
 905         else
 906             ret = X509_REQ_print_ex(out, req, get_nameopt(), reqflag);
 907
 908         if (ret == 0) {
 909             if (x509)
 910               BIO_printf(bio_err, "Error printing certificate\n");
 911             else
 912               BIO_printf(bio_err, "Error printing certificate request\n");
 913
 914             ERR_print_errors(bio_err);
 915             goto end;
 916         }
 917     }
 918
 919     if (subject) {
 920         if (x509)
 921             print_name(out, "subject=", X509_get_subject_name(x509ss),
 922                        get_nameopt());
 923         else
 924             print_name(out, "subject=", X509_REQ_get_subject_name(req),
 925                        get_nameopt());
 926     }
 927
 928     if (modulus) {
 929         EVP_PKEY *tpubkey;
 930
 931         if (x509)
 932             tpubkey = X509_get0_pubkey(x509ss);
 933         else
 934             tpubkey = X509_REQ_get0_pubkey(req);
 935         if (tpubkey == NULL) {
 936             fprintf(stdout, "Modulus=unavailable\n");
 937             goto end;
 938         }
 939         fprintf(stdout, "Modulus=");
 940         if (EVP_PKEY_is_a(tpubkey, "RSA")) {
 941             BIGNUM *n;
 942
 943             /* Every RSA key has an 'n' */
 944             EVP_PKEY_get_bn_param(pkey, "n", &n);
 945             BN_print(out, n);
 946             BN_free(n);
 947         } else {
 948             fprintf(stdout, "Wrong Algorithm type");
 949         }
 950         fprintf(stdout, "\n");
 951     }
 952
 953     if (!noout && !x509) {
 954         if (outformat == FORMAT_ASN1)
 955             i = i2d_X509_REQ_bio(out, req);
 956         else if (newhdr)
 957             i = PEM_write_bio_X509_REQ_NEW(out, req);
 958         else
 959             i = PEM_write_bio_X509_REQ(out, req);
 960         if (!i) {
 961             BIO_printf(bio_err, "unable to write X509 request\n");
 962             goto end;
 963         }
 964     }
 965     if (!noout && x509 && (x509ss != NULL)) {
 966         if (outformat == FORMAT_ASN1)
 967             i = i2d_X509_bio(out, x509ss);
 968         else
 969             i = PEM_write_bio_X509(out, x509ss);
 970         if (!i) {
 971             BIO_printf(bio_err, "unable to write X509 certificate\n");
 972             goto end;
 973         }
 974     }
 975     ret = 0;
 976  end:
 977     if (ret) {
 978         ERR_print_errors(bio_err);
 979     }
 980     NCONF_free(req_conf);
 981     NCONF_free(addext_conf);
 982     BIO_free(addext_bio);
 983     BIO_free_all(out);
 984     EVP_PKEY_free(pkey);
 985     EVP_PKEY_CTX_free(genctx);
 986     sk_OPENSSL_STRING_free(pkeyopts);
 987     sk_OPENSSL_STRING_free(sigopts);
 988     sk_OPENSSL_STRING_free(vfyopts);
 989     lh_OPENSSL_STRING_doall(addexts, exts_cleanup);
 990     lh_OPENSSL_STRING_free(addexts);
 991 #ifndef OPENSSL_NO_ENGINE
 992     release_engine(gen_eng);
 993 #endif
 994     OPENSSL_free(keyalgstr);
 995     X509_REQ_free(req);
 996     X509_free(x509ss);
 997     ASN1_INTEGER_free(serial);
 998     release_engine(e);
 999     if (passin != nofree_passin)
1000         OPENSSL_free(passin);
1001     if (passout != nofree_passout)
1002         OPENSSL_free(passout);
1003     return ret;
1004 }
1005
1006 static int make_REQ(X509_REQ *req, EVP_PKEY *pkey, char *subj, int multirdn,
1007                     int attribs, unsigned long chtype)
1008 {
1009     int ret = 0, i;
1010     char no_prompt = 0;
1011     STACK_OF(CONF_VALUE) *dn_sk, *attr_sk = NULL;
1012     char *tmp, *dn_sect, *attr_sect;
1013
1014     tmp = NCONF_get_string(req_conf, section, PROMPT);
1015     if (tmp == NULL)
1016         ERR_clear_error();
1017     if ((tmp != NULL) && strcmp(tmp, "no") == 0)
1018         no_prompt = 1;
1019
1020     dn_sect = NCONF_get_string(req_conf, section, DISTINGUISHED_NAME);
1021     if (dn_sect == NULL) {
1022         BIO_printf(bio_err, "unable to find '%s' in config\n",
1023                    DISTINGUISHED_NAME);
1024         goto err;
1025     }
1026     dn_sk = NCONF_get_section(req_conf, dn_sect);
1027     if (dn_sk == NULL) {
1028         BIO_printf(bio_err, "unable to get '%s' section\n", dn_sect);
1029         goto err;
1030     }
1031
1032     attr_sect = NCONF_get_string(req_conf, section, ATTRIBUTES);
1033     if (attr_sect == NULL) {
1034         ERR_clear_error();
1035         attr_sk = NULL;
1036     } else {
1037         attr_sk = NCONF_get_section(req_conf, attr_sect);
1038         if (attr_sk == NULL) {
1039             BIO_printf(bio_err, "unable to get '%s' section\n", attr_sect);
1040             goto err;
1041         }
1042     }
1043
1044     /* setup version number */
1045     if (!X509_REQ_set_version(req, 0L))
1046         goto err;               /* version 1 */
1047
1048     if (subj)
1049         i = build_subject(req, subj, chtype, multirdn);
1050     else if (no_prompt)
1051         i = auto_info(req, dn_sk, attr_sk, attribs, chtype);
1052     else
1053         i = prompt_info(req, dn_sk, dn_sect, attr_sk, attr_sect, attribs,
1054                         chtype);
1055     if (!i)
1056         goto err;
1057
1058     if (!X509_REQ_set_pubkey(req, pkey))
1059         goto err;
1060
1061     ret = 1;
1062  err:
1063     return ret;
1064 }
1065
1066 /*
1067  * subject is expected to be in the format /type0=value0/type1=value1/type2=...
1068  * where characters may be escaped by \
1069  */
1070 static int build_subject(X509_REQ *req, const char *subject, unsigned long chtype,
1071                          int multirdn)
1072 {
1073     X509_NAME *n;
1074
1075     if ((n = parse_name(subject, chtype, multirdn, "subject")) == NULL)
1076         return 0;
1077
1078     if (!X509_REQ_set_subject_name(req, n)) {
1079         X509_NAME_free(n);
1080         return 0;
1081     }
1082     X509_NAME_free(n);
1083     return 1;
1084 }
1085
1086 static int prompt_info(X509_REQ *req,
1087                        STACK_OF(CONF_VALUE) *dn_sk, const char *dn_sect,
1088                        STACK_OF(CONF_VALUE) *attr_sk, const char *attr_sect,
1089                        int attribs, unsigned long chtype)
1090 {
1091     int i;
1092     char *p, *q;
1093     char buf[100];
1094     int nid, mval;
1095     long n_min, n_max;
1096     char *type, *value;
1097     const char *def;
1098     CONF_VALUE *v;
1099     X509_NAME *subj = X509_REQ_get_subject_name(req);
1100
1101     if (!batch) {
1102         BIO_printf(bio_err,
1103                    "You are about to be asked to enter information that will be incorporated\n");
1104         BIO_printf(bio_err, "into your certificate request.\n");
1105         BIO_printf(bio_err,
1106                    "What you are about to enter is what is called a Distinguished Name or a DN.\n");
1107         BIO_printf(bio_err,
1108                    "There are quite a few fields but you can leave some blank\n");
1109         BIO_printf(bio_err,
1110                    "For some fields there will be a default value,\n");
1111         BIO_printf(bio_err,
1112                    "If you enter '.', the field will be left blank.\n");
1113         BIO_printf(bio_err, "-----\n");
1114     }
1115
1116     if (sk_CONF_VALUE_num(dn_sk)) {
1117         i = -1;
1118  start:
1119         for ( ; ; ) {
1120             i++;
1121             if (sk_CONF_VALUE_num(dn_sk) <= i)
1122                 break;
1123
1124             v = sk_CONF_VALUE_value(dn_sk, i);
1125             p = q = NULL;
1126             type = v->name;
1127             if (!check_end(type, "_min") || !check_end(type, "_max") ||
1128                 !check_end(type, "_default") || !check_end(type, "_value"))
1129                 continue;
1130             /*
1131              * Skip past any leading X. X: X, etc to allow for multiple
1132              * instances
1133              */
1134             for (p = v->name; *p; p++)
1135                 if ((*p == ':') || (*p == ',') || (*p == '.')) {
1136                     p++;
1137                     if (*p)
1138                         type = p;
1139                     break;
1140                 }
1141             if (*type == '+') {
1142                 mval = -1;
1143                 type++;
1144             } else {
1145                 mval = 0;
1146             }
1147             /* If OBJ not recognised ignore it */
1148             if ((nid = OBJ_txt2nid(type)) == NID_undef)
1149                 goto start;
1150             if (!join(buf, sizeof(buf), v->name, "_default", "Name"))
1151                 return 0;
1152             if ((def = NCONF_get_string(req_conf, dn_sect, buf)) == NULL) {
1153                 ERR_clear_error();
1154                 def = "";
1155             }
1156
1157             if (!join(buf, sizeof(buf), v->name, "_value", "Name"))
1158                 return 0;
1159             if ((value = NCONF_get_string(req_conf, dn_sect, buf)) == NULL) {
1160                 ERR_clear_error();
1161                 value = NULL;
1162             }
1163
1164             if (!join(buf, sizeof(buf), v->name, "_min", "Name"))
1165                 return 0;
1166             if (!NCONF_get_number(req_conf, dn_sect, buf, &n_min)) {
1167                 ERR_clear_error();
1168                 n_min = -1;
1169             }
1170
1171
1172             if (!join(buf, sizeof(buf), v->name, "_max", "Name"))
1173                 return 0;
1174             if (!NCONF_get_number(req_conf, dn_sect, buf, &n_max)) {
1175                 ERR_clear_error();
1176                 n_max = -1;
1177             }
1178
1179             if (!add_DN_object(subj, v->value, def, value, nid,
1180                                n_min, n_max, chtype, mval))
1181                 return 0;
1182         }
1183         if (X509_NAME_entry_count(subj) == 0) {
1184             BIO_printf(bio_err, "error, no objects specified in config file\n");
1185             return 0;
1186         }
1187
1188         if (attribs) {
1189             if ((attr_sk != NULL) && (sk_CONF_VALUE_num(attr_sk) > 0)
1190                 && (!batch)) {
1191                 BIO_printf(bio_err,
1192                            "\nPlease enter the following 'extra' attributes\n");
1193                 BIO_printf(bio_err,
1194                            "to be sent with your certificate request\n");
1195             }
1196
1197             i = -1;
1198  start2:
1199             for ( ; ; ) {
1200                 i++;
1201                 if ((attr_sk == NULL) || (sk_CONF_VALUE_num(attr_sk) <= i))
1202                     break;
1203
1204                 v = sk_CONF_VALUE_value(attr_sk, i);
1205                 type = v->name;
1206                 if ((nid = OBJ_txt2nid(type)) == NID_undef)
1207                     goto start2;
1208
1209                 if (!join(buf, sizeof(buf), type, "_default", "Name"))
1210                     return 0;
1211                 if ((def = NCONF_get_string(req_conf, attr_sect, buf))
1212                     == NULL) {
1213                     ERR_clear_error();
1214                     def = "";
1215                 }
1216
1217                 if (!join(buf, sizeof(buf), type, "_value", "Name"))
1218                     return 0;
1219                 if ((value = NCONF_get_string(req_conf, attr_sect, buf))
1220                     == NULL) {
1221                     ERR_clear_error();
1222                     value = NULL;
1223                 }
1224
1225                 if (!join(buf, sizeof(buf), type,"_min", "Name"))
1226                     return 0;
1227                 if (!NCONF_get_number(req_conf, attr_sect, buf, &n_min)) {
1228                     ERR_clear_error();
1229                     n_min = -1;
1230                 }
1231
1232                 if (!join(buf, sizeof(buf), type, "_max", "Name"))
1233                     return 0;
1234                 if (!NCONF_get_number(req_conf, attr_sect, buf, &n_max)) {
1235                     ERR_clear_error();
1236                     n_max = -1;
1237                 }
1238
1239                 if (!add_attribute_object(req,
1240                                           v->value, def, value, nid, n_min,
1241                                           n_max, chtype))
1242                     return 0;
1243             }
1244         }
1245     } else {
1246         BIO_printf(bio_err, "No template, please set one up.\n");
1247         return 0;
1248     }
1249
1250     return 1;
1251
1252 }
1253
1254 static int auto_info(X509_REQ *req, STACK_OF(CONF_VALUE) *dn_sk,
1255                      STACK_OF(CONF_VALUE) *attr_sk, int attribs,
1256                      unsigned long chtype)
1257 {
1258     int i, spec_char, plus_char;
1259     char *p, *q;
1260     char *type;
1261     CONF_VALUE *v;
1262     X509_NAME *subj;
1263
1264     subj = X509_REQ_get_subject_name(req);
1265
1266     for (i = 0; i < sk_CONF_VALUE_num(dn_sk); i++) {
1267         int mval;
1268         v = sk_CONF_VALUE_value(dn_sk, i);
1269         p = q = NULL;
1270         type = v->name;
1271         /*
1272          * Skip past any leading X. X: X, etc to allow for multiple instances
1273          */
1274         for (p = v->name; *p; p++) {
1275 #ifndef CHARSET_EBCDIC
1276             spec_char = ((*p == ':') || (*p == ',') || (*p == '.'));
1277 #else
1278             spec_char = ((*p == os_toascii[':']) || (*p == os_toascii[','])
1279                     || (*p == os_toascii['.']));
1280 #endif
1281             if (spec_char) {
1282                 p++;
1283                 if (*p)
1284                     type = p;
1285                 break;
1286             }
1287         }
1288 #ifndef CHARSET_EBCDIC
1289         plus_char = (*type == '+');
1290 #else
1291         plus_char = (*type == os_toascii['+']);
1292 #endif
1293         if (plus_char) {
1294             type++;
1295             mval = -1;
1296         } else {
1297             mval = 0;
1298         }
1299         if (!X509_NAME_add_entry_by_txt(subj, type, chtype,
1300                                         (unsigned char *)v->value, -1, -1,
1301                                         mval))
1302             return 0;
1303
1304     }
1305
1306     if (!X509_NAME_entry_count(subj)) {
1307         BIO_printf(bio_err, "error, no objects specified in config file\n");
1308         return 0;
1309     }
1310     if (attribs) {
1311         for (i = 0; i < sk_CONF_VALUE_num(attr_sk); i++) {
1312             v = sk_CONF_VALUE_value(attr_sk, i);
1313             if (!X509_REQ_add1_attr_by_txt(req, v->name, chtype,
1314                                            (unsigned char *)v->value, -1))
1315                 return 0;
1316         }
1317     }
1318     return 1;
1319 }
1320
1321 static int add_DN_object(X509_NAME *n, char *text, const char *def,
1322                          char *value, int nid, int n_min, int n_max,
1323                          unsigned long chtype, int mval)
1324 {
1325     int ret = 0;
1326     char buf[1024];
1327
1328     ret = build_data(text, def, value, n_min, n_max, buf, sizeof(buf),
1329                      "DN value", "DN default");
1330     if ((ret == 0) || (ret == 1))
1331         return ret;
1332     ret = 1;
1333
1334     if (!X509_NAME_add_entry_by_NID(n, nid, chtype,
1335                                     (unsigned char *)buf, -1, -1, mval))
1336         ret = 0;
1337
1338     return ret;
1339 }
1340
1341 static int add_attribute_object(X509_REQ *req, char *text, const char *def,
1342                                 char *value, int nid, int n_min,
1343                                 int n_max, unsigned long chtype)
1344 {
1345     int ret = 0;
1346     char buf[1024];
1347
1348     ret = build_data(text, def, value, n_min, n_max, buf, sizeof(buf),
1349                      "Attribute value", "Attribute default");
1350     if ((ret == 0) || (ret == 1))
1351         return ret;
1352     ret = 1;
1353
1354     if (!X509_REQ_add1_attr_by_NID(req, nid, chtype,
1355                                    (unsigned char *)buf, -1)) {
1356         BIO_printf(bio_err, "Error adding attribute\n");
1357         ERR_print_errors(bio_err);
1358         ret = 0;
1359     }
1360
1361     return ret;
1362 }
1363
1364
1365 static int build_data(char *text, const char *def,
1366                          char *value, int n_min, int n_max,
1367                          char *buf, const int buf_size,
1368                          const char *desc1, const char *desc2
1369                          )
1370 {
1371     int i;
1372  start:
1373     if (!batch)
1374         BIO_printf(bio_err, "%s [%s]:", text, def);
1375     (void)BIO_flush(bio_err);
1376     if (value != NULL) {
1377         if (!join(buf, buf_size, value, "\n", desc1))
1378             return 0;
1379         BIO_printf(bio_err, "%s\n", value);
1380     } else {
1381         buf[0] = '\0';
1382         if (!batch) {
1383             if (!fgets(buf, buf_size, stdin))
1384                 return 0;
1385         } else {
1386             buf[0] = '\n';
1387             buf[1] = '\0';
1388         }
1389     }
1390
1391     if (buf[0] == '\0')
1392         return 0;
1393     if (buf[0] == '\n') {
1394         if ((def == NULL) || (def[0] == '\0'))
1395             return 1;
1396         if (!join(buf, buf_size, def, "\n", desc2))
1397             return 0;
1398     } else if ((buf[0] == '.') && (buf[1] == '\n')) {
1399         return 1;
1400     }
1401
1402     i = strlen(buf);
1403     if (buf[i - 1] != '\n') {
1404         BIO_printf(bio_err, "weird input :-(\n");
1405         return 0;
1406     }
1407     buf[--i] = '\0';
1408 #ifdef CHARSET_EBCDIC
1409     ebcdic2ascii(buf, buf, i);
1410 #endif
1411     if (!req_check_len(i, n_min, n_max)) {
1412         if (batch || value)
1413             return 0;
1414         goto start;
1415     }
1416     return 2;
1417 }
1418
1419 static int req_check_len(int len, int n_min, int n_max)
1420 {
1421     if ((n_min > 0) && (len < n_min)) {
1422         BIO_printf(bio_err,
1423                    "string is too short, it needs to be at least %d bytes long\n",
1424                    n_min);
1425         return 0;
1426     }
1427     if ((n_max >= 0) && (len > n_max)) {
1428         BIO_printf(bio_err,
1429                    "string is too long, it needs to be no more than %d bytes long\n",
1430                    n_max);
1431         return 0;
1432     }
1433     return 1;
1434 }
1435
1436 /* Check if the end of a string matches 'end' */
1437 static int check_end(const char *str, const char *end)
1438 {
1439     size_t elen, slen;
1440     const char *tmp;
1441
1442     elen = strlen(end);
1443     slen = strlen(str);
1444     if (elen > slen)
1445         return 1;
1446     tmp = str + slen - elen;
1447     return strcmp(tmp, end);
1448 }
1449
1450 /*
1451  * Merge the two strings together into the result buffer checking for
1452  * overflow and producing an error message if there is.
1453  */
1454 static int join(char buf[], size_t buf_size, const char *name,
1455                 const char *tail, const char *desc)
1456 {
1457     const size_t name_len = strlen(name), tail_len = strlen(tail);
1458
1459     if (name_len + tail_len + 1 > buf_size) {
1460         BIO_printf(bio_err, "%s '%s' too long\n", desc, name);
1461         return 0;
1462     }
1463     memcpy(buf, name, name_len);
1464     memcpy(buf + name_len, tail, tail_len + 1);
1465     return 1;
1466 }
1467
1468 static EVP_PKEY_CTX *set_keygen_ctx(const char *gstr,
1469                                     int *pkey_type, long *pkeylen,
1470                                     char **palgnam, ENGINE *keygen_engine)
1471 {
1472     EVP_PKEY_CTX *gctx = NULL;
1473     EVP_PKEY *param = NULL;
1474     long keylen = -1;
1475     BIO *pbio = NULL;
1476     const char *paramfile = NULL;
1477
1478     if (gstr == NULL) {
1479         *pkey_type = EVP_PKEY_RSA;
1480         keylen = *pkeylen;
1481     } else if (gstr[0] >= '0' && gstr[0] <= '9') {
1482         *pkey_type = EVP_PKEY_RSA;
1483         keylen = atol(gstr);
1484         *pkeylen = keylen;
1485     } else if (strncmp(gstr, "param:", 6) == 0) {
1486         paramfile = gstr + 6;
1487     } else {
1488         const char *p = strchr(gstr, ':');
1489         int len;
1490         ENGINE *tmpeng;
1491         const EVP_PKEY_ASN1_METHOD *ameth;
1492
1493         if (p != NULL)
1494             len = p - gstr;
1495         else
1496             len = strlen(gstr);
1497         /*
1498          * The lookup of a the string will cover all engines so keep a note
1499          * of the implementation.
1500          */
1501
1502         ameth = EVP_PKEY_asn1_find_str(&tmpeng, gstr, len);
1503
1504         if (ameth == NULL) {
1505             BIO_printf(bio_err, "Unknown algorithm %.*s\n", len, gstr);
1506             return NULL;
1507         }
1508
1509         EVP_PKEY_asn1_get0_info(NULL, pkey_type, NULL, NULL, NULL, ameth);
1510 #ifndef OPENSSL_NO_ENGINE
1511         finish_engine(tmpeng);
1512 #endif
1513         if (*pkey_type == EVP_PKEY_RSA) {
1514             if (p != NULL) {
1515                 keylen = atol(p + 1);
1516                 *pkeylen = keylen;
1517             } else {
1518                 keylen = *pkeylen;
1519             }
1520         } else if (p != NULL) {
1521             paramfile = p + 1;
1522         }
1523     }
1524
1525     if (paramfile != NULL) {
1526         pbio = BIO_new_file(paramfile, "r");
1527         if (pbio == NULL) {
1528             BIO_printf(bio_err, "Can't open parameter file %s\n", paramfile);
1529             return NULL;
1530         }
1531         param = PEM_read_bio_Parameters(pbio, NULL);
1532
1533         if (param == NULL) {
1534             X509 *x;
1535
1536             (void)BIO_reset(pbio);
1537             x = PEM_read_bio_X509(pbio, NULL, NULL, NULL);
1538             if (x != NULL) {
1539                 param = X509_get_pubkey(x);
1540                 X509_free(x);
1541             }
1542         }
1543
1544         BIO_free(pbio);
1545
1546         if (param == NULL) {
1547             BIO_printf(bio_err, "Error reading parameter file %s\n", paramfile);
1548             return NULL;
1549         }
1550         if (*pkey_type == -1) {
1551             *pkey_type = EVP_PKEY_id(param);
1552         } else if (*pkey_type != EVP_PKEY_base_id(param)) {
1553             BIO_printf(bio_err, "Key Type does not match parameters\n");
1554             EVP_PKEY_free(param);
1555             return NULL;
1556         }
1557     }
1558
1559     if (palgnam != NULL) {
1560         const EVP_PKEY_ASN1_METHOD *ameth;
1561         ENGINE *tmpeng;
1562         const char *anam;
1563
1564         ameth = EVP_PKEY_asn1_find(&tmpeng, *pkey_type);
1565         if (ameth == NULL) {
1566             BIO_puts(bio_err, "Internal error: can't find key algorithm\n");
1567             return NULL;
1568         }
1569         EVP_PKEY_asn1_get0_info(NULL, NULL, NULL, NULL, &anam, ameth);
1570         *palgnam = OPENSSL_strdup(anam);
1571 #ifndef OPENSSL_NO_ENGINE
1572         finish_engine(tmpeng);
1573 #endif
1574     }
1575
1576     if (param != NULL) {
1577         gctx = EVP_PKEY_CTX_new(param, keygen_engine);
1578         *pkeylen = EVP_PKEY_bits(param);
1579         EVP_PKEY_free(param);
1580     } else {
1581         gctx = EVP_PKEY_CTX_new_id(*pkey_type, keygen_engine);
1582     }
1583
1584     if (gctx == NULL) {
1585         BIO_puts(bio_err, "Error allocating keygen context\n");
1586         ERR_print_errors(bio_err);
1587         return NULL;
1588     }
1589
1590     if (EVP_PKEY_keygen_init(gctx) <= 0) {
1591         BIO_puts(bio_err, "Error initializing keygen context\n");
1592         ERR_print_errors(bio_err);
1593         EVP_PKEY_CTX_free(gctx);
1594         return NULL;
1595     }
1596     if ((*pkey_type == EVP_PKEY_RSA) && (keylen != -1)) {
1597         if (EVP_PKEY_CTX_set_rsa_keygen_bits(gctx, keylen) <= 0) {
1598             BIO_puts(bio_err, "Error setting RSA keysize\n");
1599             ERR_print_errors(bio_err);
1600             EVP_PKEY_CTX_free(gctx);
1601             return NULL;
1602         }
1603     }
1604
1605     return gctx;
1606 }
1607
1608 static int genpkey_cb(EVP_PKEY_CTX *ctx)
1609 {
1610     char c = '*';
1611     BIO *b = EVP_PKEY_CTX_get_app_data(ctx);
1612     int p;
1613     p = EVP_PKEY_CTX_get_keygen_info(ctx, 0);
1614     if (p == 0)
1615         c = '.';
1616     if (p == 1)
1617         c = '+';
1618     if (p == 2)
1619         c = '*';
1620     if (p == 3)
1621         c = '\n';
1622     BIO_write(b, &c, 1);
1623     (void)BIO_flush(b);
1624     return 1;
1625 }