apps/req.c

   1 /* apps/req.c */
   2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
   3  * All rights reserved.
   4  *
   5  * This package is an SSL implementation written
   6  * by Eric Young (eay@cryptsoft.com).
   7  * The implementation was written so as to conform with Netscapes SSL.
   8  *
   9  * This library is free for commercial and non-commercial use as long as
  10  * the following conditions are aheared to.  The following conditions
  11  * apply to all code found in this distribution, be it the RC4, RSA,
  12  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
  13  * included with this distribution is covered by the same copyright terms
  14  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
  15  *
  16  * Copyright remains Eric Young's, and as such any Copyright notices in
  17  * the code are not to be removed.
  18  * If this package is used in a product, Eric Young should be given attribution
  19  * as the author of the parts of the library used.
  20  * This can be in the form of a textual message at program startup or
  21  * in documentation (online or textual) provided with the package.
  22  *
  23  * Redistribution and use in source and binary forms, with or without
  24  * modification, are permitted provided that the following conditions
  25  * are met:
  26  * 1. Redistributions of source code must retain the copyright
  27  *    notice, this list of conditions and the following disclaimer.
  28  * 2. Redistributions in binary form must reproduce the above copyright
  29  *    notice, this list of conditions and the following disclaimer in the
  30  *    documentation and/or other materials provided with the distribution.
  31  * 3. All advertising materials mentioning features or use of this software
  32  *    must display the following acknowledgement:
  33  *    "This product includes cryptographic software written by
  34  *     Eric Young (eay@cryptsoft.com)"
  35  *    The word 'cryptographic' can be left out if the rouines from the library
  36  *    being used are not cryptographic related :-).
  37  * 4. If you include any Windows specific code (or a derivative thereof) from
  38  *    the apps directory (application code) you must include an acknowledgement:
  39  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
  40  *
  41  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
  42  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  43  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  44  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  45  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  46  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  47  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  49  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  50  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  51  * SUCH DAMAGE.
  52  *
  53  * The licence and distribution terms for any publically available version or
  54  * derivative of this code cannot be changed.  i.e. this code cannot simply be
  55  * copied and put under another distribution licence
  56  * [including the GNU Public Licence.]
  57  */
  58
  59 #include <stdio.h>
  60 #include <stdlib.h>
  61 #include <time.h>
  62 #include <string.h>
  63 #ifdef NO_STDIO
  64 #define APPS_WIN16
  65 #endif
  66 #include "apps.h"
  67 #include <openssl/bio.h>
  68 #include <openssl/evp.h>
  69 #include <openssl/conf.h>
  70 #include <openssl/err.h>
  71 #include <openssl/asn1.h>
  72 #include <openssl/x509.h>
  73 #include <openssl/x509v3.h>
  74 #include <openssl/objects.h>
  75 #include <openssl/pem.h>
  76 #include <openssl/engine.h>
  77
  78 #define SECTION         "req"
  79
  80 #define BITS            "default_bits"
  81 #define KEYFILE         "default_keyfile"
  82 #define PROMPT          "prompt"
  83 #define DISTINGUISHED_NAME      "distinguished_name"
  84 #define ATTRIBUTES      "attributes"
  85 #define V3_EXTENSIONS   "x509_extensions"
  86 #define REQ_EXTENSIONS  "req_extensions"
  87 #define STRING_MASK     "string_mask"
  88
  89 #define DEFAULT_KEY_LENGTH      512
  90 #define MIN_KEY_LENGTH          384
  91
  92 #undef PROG
  93 #define PROG    req_main
  94
  95 /* -inform arg  - input format - default PEM (DER or PEM)
  96  * -outform arg - output format - default PEM
  97  * -in arg      - input file - default stdin
  98  * -out arg     - output file - default stdout
  99  * -verify      - check request signature
 100  * -noout       - don't print stuff out.
 101  * -text        - print out human readable text.
 102  * -nodes       - no des encryption
 103  * -config file - Load configuration file.
 104  * -key file    - make a request using key in file (or use it for verification).
 105  * -keyform arg - key file format.
 106  * -rand file(s) - load the file(s) into the PRNG.
 107  * -newkey      - make a key and a request.
 108  * -modulus     - print RSA modulus.
 109  * -x509        - output a self signed X509 structure instead.
 110  * -asn1-kludge - output new certificate request in a format that some CA's
 111  *                require.  This format is wrong
 112  */
 113
 114 static int make_REQ(X509_REQ *req,EVP_PKEY *pkey,int attribs);
 115 static int prompt_info(X509_REQ *req,
 116                 STACK_OF(CONF_VALUE) *dn_sk, char *dn_sect,
 117                 STACK_OF(CONF_VALUE) *attr_sk, char *attr_sect, int attribs);
 118 static int auto_info(X509_REQ *req, STACK_OF(CONF_VALUE) *sk,
 119                                 STACK_OF(CONF_VALUE) *attr, int attribs);
 120 static int add_attribute_object(X509_REQ *req, char *text,
 121                                 char *def, char *value, int nid, int min,
 122                                 int max);
 123 static int add_DN_object(X509_NAME *n, char *text, char *def, char *value,
 124         int nid,int min,int max);
 125 #ifndef NO_RSA
 126 static void MS_CALLBACK req_cb(int p,int n,void *arg);
 127 #endif
 128 static int req_check_len(int len,int min,int max);
 129 static int check_end(char *str, char *end);
 130 #ifndef MONOLITH
 131 static char *default_config_file=NULL;
 132 static LHASH *config=NULL;
 133 #endif
 134 static LHASH *req_conf=NULL;
 135
 136 #define TYPE_RSA        1
 137 #define TYPE_DSA        2
 138 #define TYPE_DH         3
 139
 140 int MAIN(int, char **);
 141
 142 int MAIN(int argc, char **argv)
 143         {
 144         ENGINE *e = NULL;
 145 #ifndef NO_DSA
 146         DSA *dsa_params=NULL;
 147 #endif
 148         unsigned long nmflag = 0;
 149         int ex=1,x509=0,days=30;
 150         X509 *x509ss=NULL;
 151         X509_REQ *req=NULL;
 152         EVP_PKEY *pkey=NULL;
 153         int i,badops=0,newreq=0,newkey= -1,pkey_type=TYPE_RSA;
 154         BIO *in=NULL,*out=NULL;
 155         int informat,outformat,verify=0,noout=0,text=0,keyform=FORMAT_PEM;
 156         int nodes=0,kludge=0,newhdr=0,subject=0;
 157         char *infile,*outfile,*prog,*keyfile=NULL,*template=NULL,*keyout=NULL;
 158         char *engine=NULL;
 159         char *extensions = NULL;
 160         char *req_exts = NULL;
 161         EVP_CIPHER *cipher=NULL;
 162         int modulus=0;
 163         char *inrand=NULL;
 164         char *passargin = NULL, *passargout = NULL;
 165         char *passin = NULL, *passout = NULL;
 166         char *p;
 167         const EVP_MD *md_alg=NULL,*digest=EVP_md5();
 168 #ifndef MONOLITH
 169         MS_STATIC char config_name[256];
 170 #endif
 171
 172         req_conf = NULL;
 173 #ifndef NO_DES
 174         cipher=EVP_des_ede3_cbc();
 175 #endif
 176         apps_startup();
 177
 178         if (bio_err == NULL)
 179                 if ((bio_err=BIO_new(BIO_s_file())) != NULL)
 180                         BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
 181
 182         infile=NULL;
 183         outfile=NULL;
 184         informat=FORMAT_PEM;
 185         outformat=FORMAT_PEM;
 186
 187         prog=argv[0];
 188         argc--;
 189         argv++;
 190         while (argc >= 1)
 191                 {
 192                 if      (strcmp(*argv,"-inform") == 0)
 193                         {
 194                         if (--argc < 1) goto bad;
 195                         informat=str2fmt(*(++argv));
 196                         }
 197                 else if (strcmp(*argv,"-outform") == 0)
 198                         {
 199                         if (--argc < 1) goto bad;
 200                         outformat=str2fmt(*(++argv));
 201                         }
 202                 else if (strcmp(*argv,"-engine") == 0)
 203                         {
 204                         if (--argc < 1) goto bad;
 205                         engine= *(++argv);
 206                         }
 207                 else if (strcmp(*argv,"-key") == 0)
 208                         {
 209                         if (--argc < 1) goto bad;
 210                         keyfile= *(++argv);
 211                         }
 212                 else if (strcmp(*argv,"-new") == 0)
 213                         {
 214                         newreq=1;
 215                         }
 216                 else if (strcmp(*argv,"-config") == 0)
 217                         {
 218                         if (--argc < 1) goto bad;
 219                         template= *(++argv);
 220                         }
 221                 else if (strcmp(*argv,"-keyform") == 0)
 222                         {
 223                         if (--argc < 1) goto bad;
 224                         keyform=str2fmt(*(++argv));
 225                         }
 226                 else if (strcmp(*argv,"-in") == 0)
 227                         {
 228                         if (--argc < 1) goto bad;
 229                         infile= *(++argv);
 230                         }
 231                 else if (strcmp(*argv,"-out") == 0)
 232                         {
 233                         if (--argc < 1) goto bad;
 234                         outfile= *(++argv);
 235                         }
 236                 else if (strcmp(*argv,"-keyout") == 0)
 237                         {
 238                         if (--argc < 1) goto bad;
 239                         keyout= *(++argv);
 240                         }
 241                 else if (strcmp(*argv,"-passin") == 0)
 242                         {
 243                         if (--argc < 1) goto bad;
 244                         passargin= *(++argv);
 245                         }
 246                 else if (strcmp(*argv,"-passout") == 0)
 247                         {
 248                         if (--argc < 1) goto bad;
 249                         passargout= *(++argv);
 250                         }
 251                 else if (strcmp(*argv,"-rand") == 0)
 252                         {
 253                         if (--argc < 1) goto bad;
 254                         inrand= *(++argv);
 255                         }
 256                 else if (strcmp(*argv,"-newkey") == 0)
 257                         {
 258                         int is_numeric;
 259
 260                         if (--argc < 1) goto bad;
 261                         p= *(++argv);
 262                         is_numeric = p[0] >= '0' && p[0] <= '9';
 263                         if (strncmp("rsa:",p,4) == 0 || is_numeric)
 264                                 {
 265                                 pkey_type=TYPE_RSA;
 266                                 if(!is_numeric)
 267                                     p+=4;
 268                                 newkey= atoi(p);
 269                                 }
 270                         else
 271 #ifndef NO_DSA
 272                                 if (strncmp("dsa:",p,4) == 0)
 273                                 {
 274                                 X509 *xtmp=NULL;
 275                                 EVP_PKEY *dtmp;
 276
 277                                 pkey_type=TYPE_DSA;
 278                                 p+=4;
 279                                 if ((in=BIO_new_file(p,"r")) == NULL)
 280                                         {
 281                                         perror(p);
 282                                         goto end;
 283                                         }
 284                                 if ((dsa_params=PEM_read_bio_DSAparams(in,NULL,NULL,NULL)) == NULL)
 285                                         {
 286                                         ERR_clear_error();
 287                                         (void)BIO_reset(in);
 288                                         if ((xtmp=PEM_read_bio_X509(in,NULL,NULL,NULL)) == NULL)
 289                                                 {
 290                                                 BIO_printf(bio_err,"unable to load DSA parameters from file\n");
 291                                                 goto end;
 292                                                 }
 293
 294                                         dtmp=X509_get_pubkey(xtmp);
 295                                         if (dtmp->type == EVP_PKEY_DSA)
 296                                                 dsa_params=DSAparams_dup(dtmp->pkey.dsa);
 297                                         EVP_PKEY_free(dtmp);
 298                                         X509_free(xtmp);
 299                                         if (dsa_params == NULL)
 300                                                 {
 301                                                 BIO_printf(bio_err,"Certificate does not contain DSA parameters\n");
 302                                                 goto end;
 303                                                 }
 304                                         }
 305                                 BIO_free(in);
 306                                 newkey=BN_num_bits(dsa_params->p);
 307                                 in=NULL;
 308                                 }
 309                         else
 310 #endif
 311 #ifndef NO_DH
 312                                 if (strncmp("dh:",p,4) == 0)
 313                                 {
 314                                 pkey_type=TYPE_DH;
 315                                 p+=3;
 316                                 }
 317                         else
 318 #endif
 319                                 pkey_type=TYPE_RSA;
 320
 321                         newreq=1;
 322                         }
 323                 else if (strcmp(*argv,"-newhdr") == 0)
 324                         newhdr=1;
 325                 else if (strcmp(*argv,"-modulus") == 0)
 326                         modulus=1;
 327                 else if (strcmp(*argv,"-verify") == 0)
 328                         verify=1;
 329                 else if (strcmp(*argv,"-nodes") == 0)
 330                         nodes=1;
 331                 else if (strcmp(*argv,"-noout") == 0)
 332                         noout=1;
 333                 else if (strcmp(*argv,"-nameopt") == 0)
 334                         {
 335                         if (--argc < 1) goto bad;
 336                         if (!set_name_ex(&nmflag, *(++argv))) goto bad;
 337                         }
 338                 else if (strcmp(*argv,"-subject") == 0)
 339                         subject=1;
 340                 else if (strcmp(*argv,"-text") == 0)
 341                         text=1;
 342                 else if (strcmp(*argv,"-x509") == 0)
 343                         x509=1;
 344                 else if (strcmp(*argv,"-asn1-kludge") == 0)
 345                         kludge=1;
 346                 else if (strcmp(*argv,"-no-asn1-kludge") == 0)
 347                         kludge=0;
 348                 else if (strcmp(*argv,"-days") == 0)
 349                         {
 350                         if (--argc < 1) goto bad;
 351                         days= atoi(*(++argv));
 352                         if (days == 0) days=30;
 353                         }
 354                 else if ((md_alg=EVP_get_digestbyname(&((*argv)[1]))) != NULL)
 355                         {
 356                         /* ok */
 357                         digest=md_alg;
 358                         }
 359                 else if (strcmp(*argv,"-extensions") == 0)
 360                         {
 361                         if (--argc < 1) goto bad;
 362                         extensions = *(++argv);
 363                         }
 364                 else if (strcmp(*argv,"-reqexts") == 0)
 365                         {
 366                         if (--argc < 1) goto bad;
 367                         req_exts = *(++argv);
 368                         }
 369                 else
 370                         {
 371                         BIO_printf(bio_err,"unknown option %s\n",*argv);
 372                         badops=1;
 373                         break;
 374                         }
 375                 argc--;
 376                 argv++;
 377                 }
 378
 379         if (badops)
 380                 {
 381 bad:
 382                 BIO_printf(bio_err,"%s [options] <infile >outfile\n",prog);
 383                 BIO_printf(bio_err,"where options  are\n");
 384                 BIO_printf(bio_err," -inform arg    input format - DER or PEM\n");
 385                 BIO_printf(bio_err," -outform arg   output format - DER or PEM\n");
 386                 BIO_printf(bio_err," -in arg        input file\n");
 387                 BIO_printf(bio_err," -out arg       output file\n");
 388                 BIO_printf(bio_err," -text          text form of request\n");
 389                 BIO_printf(bio_err," -noout         do not output REQ\n");
 390                 BIO_printf(bio_err," -verify        verify signature on REQ\n");
 391                 BIO_printf(bio_err," -modulus       RSA modulus\n");
 392                 BIO_printf(bio_err," -nodes         don't encrypt the output key\n");
 393                 BIO_printf(bio_err," -engine e      use engine e, possibly a hardware device.\n");
 394                 BIO_printf(bio_err," -key file  use the private key contained in file\n");
 395                 BIO_printf(bio_err," -keyform arg   key file format\n");
 396                 BIO_printf(bio_err," -keyout arg    file to send the key to\n");
 397                 BIO_printf(bio_err," -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);
 398                 BIO_printf(bio_err,"                load the file (or the files in the directory) into\n");
 399                 BIO_printf(bio_err,"                the random number generator\n");
 400                 BIO_printf(bio_err," -newkey rsa:bits generate a new RSA key of 'bits' in size\n");
 401                 BIO_printf(bio_err," -newkey dsa:file generate a new DSA key, parameters taken from CA in 'file'\n");
 402
 403                 BIO_printf(bio_err," -[digest]      Digest to sign with (md5, sha1, md2, mdc2)\n");
 404                 BIO_printf(bio_err," -config file   request template file.\n");
 405                 BIO_printf(bio_err," -new           new request.\n");
 406                 BIO_printf(bio_err," -x509          output a x509 structure instead of a cert. req.\n");
 407                 BIO_printf(bio_err," -days          number of days a x509 generated by -x509 is valid for.\n");
 408                 BIO_printf(bio_err," -newhdr        output \"NEW\" in the header lines\n");
 409                 BIO_printf(bio_err," -asn1-kludge   Output the 'request' in a format that is wrong but some CA's\n");
 410                 BIO_printf(bio_err,"                have been reported as requiring\n");
 411                 BIO_printf(bio_err," -extensions .. specify certificate extension section (override value in config file)\n");
 412                 BIO_printf(bio_err," -reqexts ..    specify request extension section (override value in config file)\n");
 413                 goto end;
 414                 }
 415
 416         ERR_load_crypto_strings();
 417         if(!app_passwd(bio_err, passargin, passargout, &passin, &passout)) {
 418                 BIO_printf(bio_err, "Error getting passwords\n");
 419                 goto end;
 420         }
 421
 422 #ifndef MONOLITH /* else this has happened in openssl.c (global `config') */
 423         /* Lets load up our environment a little */
 424         p=getenv("OPENSSL_CONF");
 425         if (p == NULL)
 426                 p=getenv("SSLEAY_CONF");
 427         if (p == NULL)
 428                 {
 429                 strcpy(config_name,X509_get_default_cert_area());
 430 #ifndef VMS
 431                 strcat(config_name,"/");
 432 #endif
 433                 strcat(config_name,OPENSSL_CONF);
 434                 p=config_name;
 435                 }
 436         default_config_file=p;
 437         config=CONF_load(config,p,NULL);
 438 #endif
 439
 440         if (template != NULL)
 441                 {
 442                 long errline;
 443
 444                 BIO_printf(bio_err,"Using configuration from %s\n",template);
 445                 req_conf=CONF_load(NULL,template,&errline);
 446                 if (req_conf == NULL)
 447                         {
 448                         BIO_printf(bio_err,"error on line %ld of %s\n",errline,template);
 449                         goto end;
 450                         }
 451                 }
 452         else
 453                 {
 454                 req_conf=config;
 455                 BIO_printf(bio_err,"Using configuration from %s\n",
 456                         default_config_file);
 457                 if (req_conf == NULL)
 458                         {
 459                         BIO_printf(bio_err,"Unable to load config info\n");
 460                         }
 461                 }
 462
 463         if (req_conf != NULL)
 464                 {
 465                 p=CONF_get_string(req_conf,NULL,"oid_file");
 466                 if (p != NULL)
 467                         {
 468                         BIO *oid_bio;
 469
 470                         oid_bio=BIO_new_file(p,"r");
 471                         if (oid_bio == NULL)
 472                                 {
 473                                 /*
 474                                 BIO_printf(bio_err,"problems opening %s for extra oid's\n",p);
 475                                 ERR_print_errors(bio_err);
 476                                 */
 477                                 }
 478                         else
 479                                 {
 480                                 OBJ_create_objects(oid_bio);
 481                                 BIO_free(oid_bio);
 482                                 }
 483                         }
 484                 }
 485                 if(!add_oid_section(bio_err, req_conf)) goto end;
 486
 487         if ((md_alg == NULL) &&
 488                 ((p=CONF_get_string(req_conf,SECTION,"default_md")) != NULL))
 489                 {
 490                 if ((md_alg=EVP_get_digestbyname(p)) != NULL)
 491                         digest=md_alg;
 492                 }
 493
 494         if(!extensions)
 495                 extensions = CONF_get_string(req_conf, SECTION, V3_EXTENSIONS);
 496         if(extensions) {
 497                 /* Check syntax of file */
 498                 X509V3_CTX ctx;
 499                 X509V3_set_ctx_test(&ctx);
 500                 X509V3_set_conf_lhash(&ctx, req_conf);
 501                 if(!X509V3_EXT_add_conf(req_conf, &ctx, extensions, NULL)) {
 502                         BIO_printf(bio_err,
 503                          "Error Loading extension section %s\n", extensions);
 504                         goto end;
 505                 }
 506         }
 507
 508         if(!passin)
 509                 passin = CONF_get_string(req_conf, SECTION, "input_password");
 510
 511         if(!passout)
 512                 passout = CONF_get_string(req_conf, SECTION, "output_password");
 513
 514         p = CONF_get_string(req_conf, SECTION, STRING_MASK);
 515
 516         if(p && !ASN1_STRING_set_default_mask_asc(p)) {
 517                 BIO_printf(bio_err, "Invalid global string mask setting %s\n", p);
 518                 goto end;
 519         }
 520
 521         if(!req_exts)
 522                 req_exts = CONF_get_string(req_conf, SECTION, REQ_EXTENSIONS);
 523         if(req_exts) {
 524                 /* Check syntax of file */
 525                 X509V3_CTX ctx;
 526                 X509V3_set_ctx_test(&ctx);
 527                 X509V3_set_conf_lhash(&ctx, req_conf);
 528                 if(!X509V3_EXT_add_conf(req_conf, &ctx, req_exts, NULL)) {
 529                         BIO_printf(bio_err,
 530                          "Error Loading request extension section %s\n",
 531                                                                 req_exts);
 532                         goto end;
 533                 }
 534         }
 535
 536         in=BIO_new(BIO_s_file());
 537         out=BIO_new(BIO_s_file());
 538         if ((in == NULL) || (out == NULL))
 539                 goto end;
 540
 541         if (engine != NULL)
 542                 {
 543                 if((e = ENGINE_by_id(engine)) == NULL)
 544                         {
 545                         BIO_printf(bio_err,"invalid engine \"%s\"\n",
 546                                 engine);
 547                         goto end;
 548                         }
 549                 if(!ENGINE_set_default(e, ENGINE_METHOD_ALL))
 550                         {
 551                         BIO_printf(bio_err,"can't use that engine\n");
 552                         goto end;
 553                         }
 554                 BIO_printf(bio_err,"engine \"%s\" set.\n", engine);
 555                 /* Free our "structural" reference. */
 556                 ENGINE_free(e);
 557                 }
 558
 559         if (keyfile != NULL)
 560                 {
 561                 if (keyform == FORMAT_ENGINE)
 562                         {
 563                         if (!e)
 564                                 {
 565                                 BIO_printf(bio_err,"no engine specified\n");
 566                                 goto end;
 567                                 }
 568                         pkey = ENGINE_load_private_key(e, keyfile, NULL);
 569                         }
 570                 else
 571                         {
 572                         if (BIO_read_filename(in,keyfile) <= 0)
 573                                 {
 574                                 perror(keyfile);
 575                                 goto end;
 576                                 }
 577
 578                         if (keyform == FORMAT_ASN1)
 579                                 pkey=d2i_PrivateKey_bio(in,NULL);
 580                         else if (keyform == FORMAT_PEM)
 581                                 {
 582                                 pkey=PEM_read_bio_PrivateKey(in,NULL,NULL,
 583                                         passin);
 584                                 }
 585                         else
 586                                 {
 587                                 BIO_printf(bio_err,"bad input format specified for X509 request\n");
 588                                 goto end;
 589                                 }
 590                         }
 591
 592                 if (pkey == NULL)
 593                         {
 594                         BIO_printf(bio_err,"unable to load Private key\n");
 595                         goto end;
 596                         }
 597                 if (EVP_PKEY_type(pkey->type) == EVP_PKEY_DSA)
 598                         {
 599                         char *randfile = CONF_get_string(req_conf,SECTION,"RANDFILE");
 600                         app_RAND_load_file(randfile, bio_err, 0);
 601                         }
 602                 }
 603
 604         if (newreq && (pkey == NULL))
 605                 {
 606                 char *randfile = CONF_get_string(req_conf,SECTION,"RANDFILE");
 607                 app_RAND_load_file(randfile, bio_err, 0);
 608                 if (inrand)
 609                         app_RAND_load_files(inrand);
 610
 611                 if (newkey <= 0)
 612                         {
 613                         newkey=(int)CONF_get_number(req_conf,SECTION,BITS);
 614                         if (newkey <= 0)
 615                                 newkey=DEFAULT_KEY_LENGTH;
 616                         }
 617
 618                 if (newkey < MIN_KEY_LENGTH)
 619                         {
 620                         BIO_printf(bio_err,"private key length is too short,\n");
 621                         BIO_printf(bio_err,"it needs to be at least %d bits, not %d\n",MIN_KEY_LENGTH,newkey);
 622                         goto end;
 623                         }
 624                 BIO_printf(bio_err,"Generating a %d bit %s private key\n",
 625                         newkey,(pkey_type == TYPE_RSA)?"RSA":"DSA");
 626
 627                 if ((pkey=EVP_PKEY_new()) == NULL) goto end;
 628
 629 #ifndef NO_RSA
 630                 if (pkey_type == TYPE_RSA)
 631                         {
 632                         if (!EVP_PKEY_assign_RSA(pkey,
 633                                 RSA_generate_key(newkey,0x10001,
 634                                         req_cb,bio_err)))
 635                                 goto end;
 636                         }
 637                 else
 638 #endif
 639 #ifndef NO_DSA
 640                         if (pkey_type == TYPE_DSA)
 641                         {
 642                         if (!DSA_generate_key(dsa_params)) goto end;
 643                         if (!EVP_PKEY_assign_DSA(pkey,dsa_params)) goto end;
 644                         dsa_params=NULL;
 645                         }
 646 #endif
 647
 648                 app_RAND_write_file(randfile, bio_err);
 649
 650                 if (pkey == NULL) goto end;
 651
 652                 if (keyout == NULL)
 653                         keyout=CONF_get_string(req_conf,SECTION,KEYFILE);
 654
 655                 if (keyout == NULL)
 656                         {
 657                         BIO_printf(bio_err,"writing new private key to stdout\n");
 658                         BIO_set_fp(out,stdout,BIO_NOCLOSE);
 659 #ifdef VMS
 660                         {
 661                         BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 662                         out = BIO_push(tmpbio, out);
 663                         }
 664 #endif
 665                         }
 666                 else
 667                         {
 668                         BIO_printf(bio_err,"writing new private key to '%s'\n",keyout);
 669                         if (BIO_write_filename(out,keyout) <= 0)
 670                                 {
 671                                 perror(keyout);
 672                                 goto end;
 673                                 }
 674                         }
 675
 676                 p=CONF_get_string(req_conf,SECTION,"encrypt_rsa_key");
 677                 if (p == NULL)
 678                         p=CONF_get_string(req_conf,SECTION,"encrypt_key");
 679                 if ((p != NULL) && (strcmp(p,"no") == 0))
 680                         cipher=NULL;
 681                 if (nodes) cipher=NULL;
 682
 683                 i=0;
 684 loop:
 685                 if (!PEM_write_bio_PrivateKey(out,pkey,cipher,
 686                         NULL,0,NULL,passout))
 687                         {
 688                         if ((ERR_GET_REASON(ERR_peek_error()) ==
 689                                 PEM_R_PROBLEMS_GETTING_PASSWORD) && (i < 3))
 690                                 {
 691                                 ERR_clear_error();
 692                                 i++;
 693                                 goto loop;
 694                                 }
 695                         goto end;
 696                         }
 697                 BIO_printf(bio_err,"-----\n");
 698                 }
 699
 700         if (!newreq)
 701                 {
 702                 /* Since we are using a pre-existing certificate
 703                  * request, the kludge 'format' info should not be
 704                  * changed. */
 705                 kludge= -1;
 706                 if (infile == NULL)
 707                         BIO_set_fp(in,stdin,BIO_NOCLOSE);
 708                 else
 709                         {
 710                         if (BIO_read_filename(in,infile) <= 0)
 711                                 {
 712                                 perror(infile);
 713                                 goto end;
 714                                 }
 715                         }
 716
 717                 if      (informat == FORMAT_ASN1)
 718                         req=d2i_X509_REQ_bio(in,NULL);
 719                 else if (informat == FORMAT_PEM)
 720                         req=PEM_read_bio_X509_REQ(in,NULL,NULL,NULL);
 721                 else
 722                         {
 723                         BIO_printf(bio_err,"bad input format specified for X509 request\n");
 724                         goto end;
 725                         }
 726                 if (req == NULL)
 727                         {
 728                         BIO_printf(bio_err,"unable to load X509 request\n");
 729                         goto end;
 730                         }
 731                 }
 732
 733         if (newreq || x509)
 734                 {
 735 #ifndef NO_DSA
 736                 if (pkey->type == EVP_PKEY_DSA)
 737                         digest=EVP_dss1();
 738 #endif
 739
 740                 if (pkey == NULL)
 741                         {
 742                         BIO_printf(bio_err,"you need to specify a private key\n");
 743                         goto end;
 744                         }
 745                 if (req == NULL)
 746                         {
 747                         req=X509_REQ_new();
 748                         if (req == NULL)
 749                                 {
 750                                 goto end;
 751                                 }
 752
 753                         i=make_REQ(req,pkey,!x509);
 754                         if ((kludge > 0) && !sk_X509_ATTRIBUTE_num(req->req_info->attributes))
 755                                 {
 756                                 sk_X509_ATTRIBUTE_free(req->req_info->attributes);
 757                                 req->req_info->attributes = NULL;
 758                                 }
 759                         if (!i)
 760                                 {
 761                                 BIO_printf(bio_err,"problems making Certificate Request\n");
 762                                 goto end;
 763                                 }
 764                         }
 765                 if (x509)
 766                         {
 767                         EVP_PKEY *tmppkey;
 768                         X509V3_CTX ext_ctx;
 769                         if ((x509ss=X509_new()) == NULL) goto end;
 770
 771                         /* Set version to V3 */
 772                         if(!X509_set_version(x509ss, 2)) goto end;
 773                         ASN1_INTEGER_set(X509_get_serialNumber(x509ss),0L);
 774
 775                         X509_set_issuer_name(x509ss,
 776                                 X509_REQ_get_subject_name(req));
 777                         X509_gmtime_adj(X509_get_notBefore(x509ss),0);
 778                         X509_gmtime_adj(X509_get_notAfter(x509ss),
 779                                 (long)60*60*24*days);
 780                         X509_set_subject_name(x509ss,
 781                                 X509_REQ_get_subject_name(req));
 782                         tmppkey = X509_REQ_get_pubkey(req);
 783                         X509_set_pubkey(x509ss,tmppkey);
 784                         EVP_PKEY_free(tmppkey);
 785
 786                         /* Set up V3 context struct */
 787
 788                         X509V3_set_ctx(&ext_ctx, x509ss, x509ss, NULL, NULL, 0);
 789                         X509V3_set_conf_lhash(&ext_ctx, req_conf);
 790
 791                         /* Add extensions */
 792                         if(extensions && !X509V3_EXT_add_conf(req_conf,
 793                                         &ext_ctx, extensions, x509ss))
 794                             {
 795                             BIO_printf(bio_err,
 796                                        "Error Loading extension section %s\n",
 797                                        extensions);
 798                             goto end;
 799                             }
 800
 801                         if (!(i=X509_sign(x509ss,pkey,digest)))
 802                                 goto end;
 803                         }
 804                 else
 805                         {
 806                         X509V3_CTX ext_ctx;
 807
 808                         /* Set up V3 context struct */
 809
 810                         X509V3_set_ctx(&ext_ctx, NULL, NULL, req, NULL, 0);
 811                         X509V3_set_conf_lhash(&ext_ctx, req_conf);
 812
 813                         /* Add extensions */
 814                         if(req_exts && !X509V3_EXT_REQ_add_conf(req_conf,
 815                                         &ext_ctx, req_exts, req))
 816                             {
 817                             BIO_printf(bio_err,
 818                                        "Error Loading extension section %s\n",
 819                                        req_exts);
 820                             goto end;
 821                             }
 822                         if (!(i=X509_REQ_sign(req,pkey,digest)))
 823                                 goto end;
 824                         }
 825                 }
 826
 827         if (verify && !x509)
 828                 {
 829                 int tmp=0;
 830
 831                 if (pkey == NULL)
 832                         {
 833                         pkey=X509_REQ_get_pubkey(req);
 834                         tmp=1;
 835                         if (pkey == NULL) goto end;
 836                         }
 837
 838                 i=X509_REQ_verify(req,pkey);
 839                 if (tmp) {
 840                         EVP_PKEY_free(pkey);
 841                         pkey=NULL;
 842                 }
 843
 844                 if (i < 0)
 845                         {
 846                         goto end;
 847                         }
 848                 else if (i == 0)
 849                         {
 850                         BIO_printf(bio_err,"verify failure\n");
 851                         }
 852                 else /* if (i > 0) */
 853                         BIO_printf(bio_err,"verify OK\n");
 854                 }
 855
 856         if (noout && !text && !modulus && !subject)
 857                 {
 858                 ex=0;
 859                 goto end;
 860                 }
 861
 862         if (outfile == NULL)
 863                 {
 864                 BIO_set_fp(out,stdout,BIO_NOCLOSE);
 865 #ifdef VMS
 866                 {
 867                 BIO *tmpbio = BIO_new(BIO_f_linebuffer());
 868                 out = BIO_push(tmpbio, out);
 869                 }
 870 #endif
 871                 }
 872         else
 873                 {
 874                 if ((keyout != NULL) && (strcmp(outfile,keyout) == 0))
 875                         i=(int)BIO_append_filename(out,outfile);
 876                 else
 877                         i=(int)BIO_write_filename(out,outfile);
 878                 if (!i)
 879                         {
 880                         perror(outfile);
 881                         goto end;
 882                         }
 883                 }
 884
 885         if (text)
 886                 {
 887                 if (x509)
 888                         X509_print(out,x509ss);
 889                 else
 890                         X509_REQ_print(out,req);
 891                 }
 892
 893         if(subject)
 894                 {
 895                 if(x509)
 896                         print_name(out, "subject=", X509_get_subject_name(x509ss), nmflag);
 897                 else
 898                         print_name(out, "subject=", X509_REQ_get_subject_name(req), nmflag);
 899                 }
 900
 901         if (modulus)
 902                 {
 903                 EVP_PKEY *pubkey;
 904
 905                 if (x509)
 906                         pubkey=X509_get_pubkey(x509ss);
 907                 else
 908                         pubkey=X509_REQ_get_pubkey(req);
 909                 if (pubkey == NULL)
 910                         {
 911                         fprintf(stdout,"Modulus=unavailable\n");
 912                         goto end;
 913                         }
 914                 fprintf(stdout,"Modulus=");
 915 #ifndef NO_RSA
 916                 if (pubkey->type == EVP_PKEY_RSA)
 917                         BN_print(out,pubkey->pkey.rsa->n);
 918                 else
 919 #endif
 920                         fprintf(stdout,"Wrong Algorithm type");
 921                 fprintf(stdout,"\n");
 922                 }
 923
 924         if (!noout && !x509)
 925                 {
 926                 if      (outformat == FORMAT_ASN1)
 927                         i=i2d_X509_REQ_bio(out,req);
 928                 else if (outformat == FORMAT_PEM) {
 929                         if(newhdr) i=PEM_write_bio_X509_REQ_NEW(out,req);
 930                         else i=PEM_write_bio_X509_REQ(out,req);
 931                 } else {
 932                         BIO_printf(bio_err,"bad output format specified for outfile\n");
 933                         goto end;
 934                         }
 935                 if (!i)
 936                         {
 937                         BIO_printf(bio_err,"unable to write X509 request\n");
 938                         goto end;
 939                         }
 940                 }
 941         if (!noout && x509 && (x509ss != NULL))
 942                 {
 943                 if      (outformat == FORMAT_ASN1)
 944                         i=i2d_X509_bio(out,x509ss);
 945                 else if (outformat == FORMAT_PEM)
 946                         i=PEM_write_bio_X509(out,x509ss);
 947                 else    {
 948                         BIO_printf(bio_err,"bad output format specified for outfile\n");
 949                         goto end;
 950                         }
 951                 if (!i)
 952                         {
 953                         BIO_printf(bio_err,"unable to write X509 certificate\n");
 954                         goto end;
 955                         }
 956                 }
 957         ex=0;
 958 end:
 959         if (ex)
 960                 {
 961                 ERR_print_errors(bio_err);
 962                 }
 963         if ((req_conf != NULL) && (req_conf != config)) CONF_free(req_conf);
 964         BIO_free(in);
 965         BIO_free_all(out);
 966         EVP_PKEY_free(pkey);
 967         X509_REQ_free(req);
 968         X509_free(x509ss);
 969         if(passargin && passin) OPENSSL_free(passin);
 970         if(passargout && passout) OPENSSL_free(passout);
 971         OBJ_cleanup();
 972 #ifndef NO_DSA
 973         if (dsa_params != NULL) DSA_free(dsa_params);
 974 #endif
 975         EXIT(ex);
 976         }
 977
 978 static int make_REQ(X509_REQ *req, EVP_PKEY *pkey, int attribs)
 979         {
 980         int ret=0,i;
 981         char no_prompt = 0;
 982         STACK_OF(CONF_VALUE) *dn_sk, *attr_sk = NULL;
 983         char *tmp, *dn_sect,*attr_sect;
 984
 985         tmp=CONF_get_string(req_conf,SECTION,PROMPT);
 986         if((tmp != NULL) && !strcmp(tmp, "no")) no_prompt = 1;
 987
 988         dn_sect=CONF_get_string(req_conf,SECTION,DISTINGUISHED_NAME);
 989         if (dn_sect == NULL)
 990                 {
 991                 BIO_printf(bio_err,"unable to find '%s' in config\n",
 992                         DISTINGUISHED_NAME);
 993                 goto err;
 994                 }
 995         dn_sk=CONF_get_section(req_conf,dn_sect);
 996         if (dn_sk == NULL)
 997                 {
 998                 BIO_printf(bio_err,"unable to get '%s' section\n",dn_sect);
 999                 goto err;
1000                 }
1001
1002         attr_sect=CONF_get_string(req_conf,SECTION,ATTRIBUTES);
1003         if (attr_sect == NULL)
1004                 attr_sk=NULL;
1005         else
1006                 {
1007                 attr_sk=CONF_get_section(req_conf,attr_sect);
1008                 if (attr_sk == NULL)
1009                         {
1010                         BIO_printf(bio_err,"unable to get '%s' section\n",attr_sect);
1011                         goto err;
1012                         }
1013                 }
1014
1015         /* setup version number */
1016         if (!X509_REQ_set_version(req,0L)) goto err; /* version 1 */
1017
1018         if(no_prompt) i = auto_info(req, dn_sk, attr_sk, attribs);
1019         else i = prompt_info(req, dn_sk, dn_sect, attr_sk, attr_sect, attribs);
1020         if(!i) goto err;
1021
1022         X509_REQ_set_pubkey(req,pkey);
1023
1024         ret=1;
1025 err:
1026         return(ret);
1027         }
1028
1029
1030 static int prompt_info(X509_REQ *req,
1031                 STACK_OF(CONF_VALUE) *dn_sk, char *dn_sect,
1032                 STACK_OF(CONF_VALUE) *attr_sk, char *attr_sect, int attribs)
1033         {
1034         int i;
1035         char *p,*q;
1036         char buf[100];
1037         int nid,min,max;
1038         char *type,*def,*value;
1039         CONF_VALUE *v;
1040         X509_NAME *subj;
1041         subj = X509_REQ_get_subject_name(req);
1042         BIO_printf(bio_err,"You are about to be asked to enter information that will be incorporated\n");
1043         BIO_printf(bio_err,"into your certificate request.\n");
1044         BIO_printf(bio_err,"What you are about to enter is what is called a Distinguished Name or a DN.\n");
1045         BIO_printf(bio_err,"There are quite a few fields but you can leave some blank\n");
1046         BIO_printf(bio_err,"For some fields there will be a default value,\n");
1047         BIO_printf(bio_err,"If you enter '.', the field will be left blank.\n");
1048         BIO_printf(bio_err,"-----\n");
1049
1050
1051         if (sk_CONF_VALUE_num(dn_sk))
1052                 {
1053                 i= -1;
1054 start:          for (;;)
1055                         {
1056                         i++;
1057                         if (sk_CONF_VALUE_num(dn_sk) <= i) break;
1058
1059                         v=sk_CONF_VALUE_value(dn_sk,i);
1060                         p=q=NULL;
1061                         type=v->name;
1062                         if(!check_end(type,"_min") || !check_end(type,"_max") ||
1063                                 !check_end(type,"_default") ||
1064                                          !check_end(type,"_value")) continue;
1065                         /* Skip past any leading X. X: X, etc to allow for
1066                          * multiple instances
1067                          */
1068                         for(p = v->name; *p ; p++)
1069                                 if ((*p == ':') || (*p == ',') ||
1070                                                          (*p == '.')) {
1071                                         p++;
1072                                         if(*p) type = p;
1073                                         break;
1074                                 }
1075                         /* If OBJ not recognised ignore it */
1076                         if ((nid=OBJ_txt2nid(type)) == NID_undef) goto start;
1077                         sprintf(buf,"%s_default",v->name);
1078                         if ((def=CONF_get_string(req_conf,dn_sect,buf)) == NULL)
1079                                 def="";
1080
1081                         sprintf(buf,"%s_value",v->name);
1082                         if ((value=CONF_get_string(req_conf,dn_sect,buf)) == NULL)
1083                                 value=NULL;
1084
1085                         sprintf(buf,"%s_min",v->name);
1086                         min=(int)CONF_get_number(req_conf,dn_sect,buf);
1087
1088                         sprintf(buf,"%s_max",v->name);
1089                         max=(int)CONF_get_number(req_conf,dn_sect,buf);
1090
1091                         if (!add_DN_object(subj,v->value,def,value,nid,
1092                                 min,max))
1093                                 return 0;
1094                         }
1095                 if (X509_NAME_entry_count(subj) == 0)
1096                         {
1097                         BIO_printf(bio_err,"error, no objects specified in config file\n");
1098                         return 0;
1099                         }
1100
1101                 if (attribs)
1102                         {
1103                         if ((attr_sk != NULL) && (sk_CONF_VALUE_num(attr_sk) > 0))
1104                                 {
1105                                 BIO_printf(bio_err,"\nPlease enter the following 'extra' attributes\n");
1106                                 BIO_printf(bio_err,"to be sent with your certificate request\n");
1107                                 }
1108
1109                         i= -1;
1110 start2:                 for (;;)
1111                                 {
1112                                 i++;
1113                                 if ((attr_sk == NULL) ||
1114                                             (sk_CONF_VALUE_num(attr_sk) <= i))
1115                                         break;
1116
1117                                 v=sk_CONF_VALUE_value(attr_sk,i);
1118                                 type=v->name;
1119                                 if ((nid=OBJ_txt2nid(type)) == NID_undef)
1120                                         goto start2;
1121
1122                                 sprintf(buf,"%s_default",type);
1123                                 if ((def=CONF_get_string(req_conf,attr_sect,buf))
1124                                         == NULL)
1125                                         def="";
1126
1127                                 sprintf(buf,"%s_value",type);
1128                                 if ((value=CONF_get_string(req_conf,attr_sect,buf))
1129                                         == NULL)
1130                                         value=NULL;
1131
1132                                 sprintf(buf,"%s_min",type);
1133                                 min=(int)CONF_get_number(req_conf,attr_sect,buf);
1134
1135                                 sprintf(buf,"%s_max",type);
1136                                 max=(int)CONF_get_number(req_conf,attr_sect,buf);
1137
1138                                 if (!add_attribute_object(req,
1139                                         v->value,def,value,nid,min,max))
1140                                         return 0;
1141                                 }
1142                         }
1143                 }
1144         else
1145                 {
1146                 BIO_printf(bio_err,"No template, please set one up.\n");
1147                 return 0;
1148                 }
1149
1150         return 1;
1151
1152         }
1153
1154 static int auto_info(X509_REQ *req, STACK_OF(CONF_VALUE) *dn_sk,
1155                         STACK_OF(CONF_VALUE) *attr_sk, int attribs)
1156         {
1157         int i;
1158         char *p,*q;
1159         char *type;
1160         CONF_VALUE *v;
1161         X509_NAME *subj;
1162
1163         subj = X509_REQ_get_subject_name(req);
1164
1165         for (i = 0; i < sk_CONF_VALUE_num(dn_sk); i++)
1166                 {
1167                 v=sk_CONF_VALUE_value(dn_sk,i);
1168                 p=q=NULL;
1169                 type=v->name;
1170                 /* Skip past any leading X. X: X, etc to allow for
1171                  * multiple instances
1172                  */
1173                 for(p = v->name; *p ; p++)
1174 #ifndef CHARSET_EBCDIC
1175                         if ((*p == ':') || (*p == ',') || (*p == '.')) {
1176 #else
1177                         if ((*p == os_toascii[':']) || (*p == os_toascii[',']) || (*p == os_toascii['.'])) {
1178 #endif
1179                                 p++;
1180                                 if(*p) type = p;
1181                                 break;
1182                         }
1183                 if (!X509_NAME_add_entry_by_txt(subj,type, MBSTRING_ASC,
1184                                 (unsigned char *) v->value,-1,-1,0)) return 0;
1185
1186                 }
1187
1188                 if (!X509_NAME_entry_count(subj))
1189                         {
1190                         BIO_printf(bio_err,"error, no objects specified in config file\n");
1191                         return 0;
1192                         }
1193                 if (attribs)
1194                         {
1195                         for (i = 0; i < sk_CONF_VALUE_num(attr_sk); i++)
1196                                 {
1197                                 v=sk_CONF_VALUE_value(attr_sk,i);
1198                                 if(!X509_REQ_add1_attr_by_txt(req, v->name, MBSTRING_ASC,
1199                                         (unsigned char *)v->value, -1)) return 0;
1200                                 }
1201                         }
1202         return 1;
1203         }
1204
1205
1206 static int add_DN_object(X509_NAME *n, char *text, char *def, char *value,
1207              int nid, int min, int max)
1208         {
1209         int i,ret=0;
1210         MS_STATIC char buf[1024];
1211 start:
1212         BIO_printf(bio_err,"%s [%s]:",text,def);
1213         (void)BIO_flush(bio_err);
1214         if (value != NULL)
1215                 {
1216                 strcpy(buf,value);
1217                 strcat(buf,"\n");
1218                 BIO_printf(bio_err,"%s\n",value);
1219                 }
1220         else
1221                 {
1222                 buf[0]='\0';
1223                 fgets(buf,1024,stdin);
1224                 }
1225
1226         if (buf[0] == '\0') return(0);
1227         else if (buf[0] == '\n')
1228                 {
1229                 if ((def == NULL) || (def[0] == '\0'))
1230                         return(1);
1231                 strcpy(buf,def);
1232                 strcat(buf,"\n");
1233                 }
1234         else if ((buf[0] == '.') && (buf[1] == '\n')) return(1);
1235
1236         i=strlen(buf);
1237         if (buf[i-1] != '\n')
1238                 {
1239                 BIO_printf(bio_err,"weird input :-(\n");
1240                 return(0);
1241                 }
1242         buf[--i]='\0';
1243
1244 #ifdef CHARSET_EBCDIC
1245         ebcdic2ascii(buf, buf, i);
1246 #endif
1247         if(!req_check_len(i, min, max)) goto start;
1248         if (!X509_NAME_add_entry_by_NID(n,nid, MBSTRING_ASC,
1249                                 (unsigned char *) buf, -1,-1,0)) goto err;
1250         ret=1;
1251 err:
1252         return(ret);
1253         }
1254
1255 static int add_attribute_object(X509_REQ *req, char *text,
1256                                 char *def, char *value, int nid, int min,
1257                                 int max)
1258         {
1259         int i;
1260         static char buf[1024];
1261
1262 start:
1263         BIO_printf(bio_err,"%s [%s]:",text,def);
1264         (void)BIO_flush(bio_err);
1265         if (value != NULL)
1266                 {
1267                 strcpy(buf,value);
1268                 strcat(buf,"\n");
1269                 BIO_printf(bio_err,"%s\n",value);
1270                 }
1271         else
1272                 {
1273                 buf[0]='\0';
1274                 fgets(buf,1024,stdin);
1275                 }
1276
1277         if (buf[0] == '\0') return(0);
1278         else if (buf[0] == '\n')
1279                 {
1280                 if ((def == NULL) || (def[0] == '\0'))
1281                         return(1);
1282                 strcpy(buf,def);
1283                 strcat(buf,"\n");
1284                 }
1285         else if ((buf[0] == '.') && (buf[1] == '\n')) return(1);
1286
1287         i=strlen(buf);
1288         if (buf[i-1] != '\n')
1289                 {
1290                 BIO_printf(bio_err,"weird input :-(\n");
1291                 return(0);
1292                 }
1293         buf[--i]='\0';
1294 #ifdef CHARSET_EBCDIC
1295         ebcdic2ascii(buf, buf, i);
1296 #endif
1297         if(!req_check_len(i, min, max)) goto start;
1298
1299         if(!X509_REQ_add1_attr_by_NID(req, nid, MBSTRING_ASC,
1300                                         (unsigned char *)buf, -1)) {
1301                 BIO_printf(bio_err, "Error adding attribute\n");
1302                 ERR_print_errors(bio_err);
1303                 goto err;
1304         }
1305
1306         return(1);
1307 err:
1308         return(0);
1309         }
1310
1311 #ifndef NO_RSA
1312 static void MS_CALLBACK req_cb(int p, int n, void *arg)
1313         {
1314         char c='*';
1315
1316         if (p == 0) c='.';
1317         if (p == 1) c='+';
1318         if (p == 2) c='*';
1319         if (p == 3) c='\n';
1320         BIO_write((BIO *)arg,&c,1);
1321         (void)BIO_flush((BIO *)arg);
1322 #ifdef LINT
1323         p=n;
1324 #endif
1325         }
1326 #endif
1327
1328 static int req_check_len(int len, int min, int max)
1329         {
1330         if (len < min)
1331                 {
1332                 BIO_printf(bio_err,"string is too short, it needs to be at least %d bytes long\n",min);
1333                 return(0);
1334                 }
1335         if ((max != 0) && (len > max))
1336                 {
1337                 BIO_printf(bio_err,"string is too long, it needs to be less than  %d bytes long\n",max);
1338                 return(0);
1339                 }
1340         return(1);
1341         }
1342
1343 /* Check if the end of a string matches 'end' */
1344 static int check_end(char *str, char *end)
1345 {
1346         int elen, slen;
1347         char *tmp;
1348         elen = strlen(end);
1349         slen = strlen(str);
1350         if(elen > slen) return 1;
1351         tmp = str + slen - elen;
1352         return strcmp(tmp, end);
1353 }