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