apps/s_server.c

   1 /* apps/s_server.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 <string.h>
  62 #include <sys/types.h>
  63 #include <sys/stat.h>
  64 #ifdef NO_STDIO
  65 #define APPS_WIN16
  66 #endif
  67 #include "lhash.h"
  68 #include "bn.h"
  69 #define USE_SOCKETS
  70 #include "apps.h"
  71 #include "err.h"
  72 #include "pem.h"
  73 #include "x509.h"
  74 #include "ssl.h"
  75 #include "s_apps.h"
  76
  77 #ifndef NOPROTO
  78 static RSA MS_CALLBACK *tmp_rsa_cb(SSL *s, int export,int keylength);
  79 static int sv_body(char *hostname, int s, char *context);
  80 static int www_body(char *hostname, int s, char *context);
  81 static void close_accept_socket(void );
  82 static void sv_usage(void);
  83 static int init_ssl_connection(SSL *s);
  84 static void print_stats(BIO *bp,SSL_CTX *ctx);
  85 #ifndef NO_DH
  86 static DH *load_dh_param(void );
  87 static DH *get_dh512(void);
  88 #endif
  89 /* static void s_server_init(void);*/
  90 #else
  91 static RSA MS_CALLBACK *tmp_rsa_cb();
  92 static int sv_body();
  93 static int www_body();
  94 static void close_accept_socket();
  95 static void sv_usage();
  96 static int init_ssl_connection();
  97 static void print_stats();
  98 #ifndef NO_DH
  99 static DH *load_dh_param();
 100 static DH *get_dh512();
 101 #endif
 102 /* static void s_server_init(); */
 103 #endif
 104
 105
 106 #ifndef S_ISDIR
 107 #define S_ISDIR(a)      (((a) & _S_IFMT) == _S_IFDIR)
 108 #endif
 109
 110 #ifndef NO_DH
 111 static unsigned char dh512_p[]={
 112         0xDA,0x58,0x3C,0x16,0xD9,0x85,0x22,0x89,0xD0,0xE4,0xAF,0x75,
 113         0x6F,0x4C,0xCA,0x92,0xDD,0x4B,0xE5,0x33,0xB8,0x04,0xFB,0x0F,
 114         0xED,0x94,0xEF,0x9C,0x8A,0x44,0x03,0xED,0x57,0x46,0x50,0xD3,
 115         0x69,0x99,0xDB,0x29,0xD7,0x76,0x27,0x6B,0xA2,0xD3,0xD4,0x12,
 116         0xE2,0x18,0xF4,0xDD,0x1E,0x08,0x4C,0xF6,0xD8,0x00,0x3E,0x7C,
 117         0x47,0x74,0xE8,0x33,
 118         };
 119 static unsigned char dh512_g[]={
 120         0x02,
 121         };
 122
 123 static DH *get_dh512(void)
 124         {
 125         DH *dh=NULL;
 126
 127         if ((dh=DH_new()) == NULL) return(NULL);
 128         dh->p=BN_bin2bn(dh512_p,sizeof(dh512_p),NULL);
 129         dh->g=BN_bin2bn(dh512_g,sizeof(dh512_g),NULL);
 130         if ((dh->p == NULL) || (dh->g == NULL))
 131                 return(NULL);
 132         return(dh);
 133         }
 134 #endif
 135
 136 /* static int load_CA(SSL_CTX *ctx, char *file);*/
 137
 138 #undef BUFSIZZ
 139 #define BUFSIZZ 16*1024
 140 static int bufsize=32;
 141 static int accept_socket= -1;
 142
 143 #define TEST_CERT       "server.pem"
 144 #undef PROG
 145 #define PROG            s_server_main
 146
 147 #define DH_PARAM        "server.pem"
 148
 149 extern int verify_depth;
 150
 151 static char *cipher=NULL;
 152 static int s_server_verify=SSL_VERIFY_NONE;
 153 static char *s_cert_file=TEST_CERT,*s_key_file=NULL;
 154 static char *s_dcert_file=NULL,*s_dkey_file=NULL;
 155 #ifdef FIONBIO
 156 static int s_nbio=0;
 157 #endif
 158 static int s_nbio_test=0;
 159 static SSL_CTX *ctx=NULL;
 160 static int www=0;
 161
 162 static BIO *bio_s_out=NULL;
 163 static int s_debug=0;
 164 static int s_quiet=0;
 165
 166 #if 0
 167 static void s_server_init(void)
 168         {
 169         cipher=NULL;
 170         s_server_verify=SSL_VERIFY_NONE;
 171         s_dcert_file=NULL;
 172         s_dkey_file=NULL;
 173         s_cert_file=TEST_CERT;
 174         s_key_file=NULL;
 175 #ifdef FIONBIO
 176         s_nbio=0;
 177 #endif
 178         s_nbio_test=0;
 179         ctx=NULL;
 180         www=0;
 181
 182         bio_s_out=NULL;
 183         s_debug=0;
 184         s_quiet=0;
 185         }
 186 #endif
 187
 188 static void sv_usage(void)
 189         {
 190         BIO_printf(bio_err,"usage: s_server [args ...]\n");
 191         BIO_printf(bio_err,"\n");
 192         BIO_printf(bio_err," -accept arg   - port to accept on (default is %d)\n",PORT);
 193         BIO_printf(bio_err," -context arg  - set session ID context\n");
 194         BIO_printf(bio_err," -verify arg   - turn on peer certificate verification\n");
 195         BIO_printf(bio_err," -Verify arg   - turn on peer certificate verification, must have a cert.\n");
 196         BIO_printf(bio_err," -cert arg     - certificate file to use, PEM format assumed\n");
 197         BIO_printf(bio_err,"                 (default is %s)\n",TEST_CERT);
 198         BIO_printf(bio_err," -key arg      - RSA file to use, PEM format assumed, in cert file if\n");
 199         BIO_printf(bio_err,"                 not specified (default is %s)\n",TEST_CERT);
 200         BIO_printf(bio_err," -dcert arg    - second certificate file to use (usually for DSA)\n");
 201         BIO_printf(bio_err," -dkey arg     - second private key file to use (usually for DSA)\n");
 202 #ifdef FIONBIO
 203         BIO_printf(bio_err," -nbio         - Run with non-blocking IO\n");
 204 #endif
 205         BIO_printf(bio_err," -nbio_test    - test with the non-blocking test bio\n");
 206         BIO_printf(bio_err," -debug        - Print more output\n");
 207         BIO_printf(bio_err," -state        - Print the SSL states\n");
 208         BIO_printf(bio_err," -CApath arg   - PEM format directory of CA's\n");
 209         BIO_printf(bio_err," -CAfile arg   - PEM format file of CA's\n");
 210         BIO_printf(bio_err," -nocert       - Don't use any certificates (Anon-DH)\n");
 211         BIO_printf(bio_err," -cipher arg   - play with 'openssl ciphers' to see what goes here\n");
 212         BIO_printf(bio_err," -quiet        - No server output\n");
 213         BIO_printf(bio_err," -no_tmp_rsa   - Do not generate a tmp RSA key\n");
 214         BIO_printf(bio_err," -ssl2         - Just talk SSLv2\n");
 215         BIO_printf(bio_err," -ssl3         - Just talk SSLv3\n");
 216         BIO_printf(bio_err," -tls1         - Just talk TLSv1\n");
 217         BIO_printf(bio_err," -no_ssl2      - Just disable SSLv2\n");
 218         BIO_printf(bio_err," -no_ssl3      - Just disable SSLv3\n");
 219         BIO_printf(bio_err," -no_tls1      - Just disable TLSv1\n");
 220         BIO_printf(bio_err," -bugs         - Turn on SSL bug compatability\n");
 221         BIO_printf(bio_err," -www          - Respond to a 'GET /' with a status page\n");
 222         BIO_printf(bio_err," -WWW          - Respond to a 'GET /<path> HTTP/1.0' with file ./<path>\n");
 223         }
 224
 225 static int local_argc=0;
 226 static char **local_argv;
 227 static int hack=0;
 228
 229 int MAIN(int argc, char *argv[])
 230         {
 231         short port=PORT;
 232         char *CApath=NULL,*CAfile=NULL;
 233         char *context = NULL;
 234         int badop=0,bugs=0;
 235         int ret=1;
 236         int off=0;
 237         int no_tmp_rsa=0,nocert=0;
 238         int state=0;
 239         SSL_METHOD *meth=NULL;
 240 #ifndef NO_DH
 241         DH *dh=NULL;
 242 #endif
 243
 244 #if !defined(NO_SSL2) && !defined(NO_SSL3)
 245         meth=SSLv23_server_method();
 246 #elif !defined(NO_SSL3)
 247         meth=SSLv3_server_method();
 248 #elif !defined(NO_SSL2)
 249         meth=SSLv2_server_method();
 250 #endif
 251
 252         local_argc=argc;
 253         local_argv=argv;
 254
 255         apps_startup();
 256         s_quiet=0;
 257         s_debug=0;
 258
 259         if (bio_err == NULL)
 260                 bio_err=BIO_new_fp(stderr,BIO_NOCLOSE);
 261
 262         verify_depth=0;
 263 #ifdef FIONBIO
 264         s_nbio=0;
 265 #endif
 266         s_nbio_test=0;
 267
 268         argc--;
 269         argv++;
 270
 271         while (argc >= 1)
 272                 {
 273                 if      ((strcmp(*argv,"-port") == 0) ||
 274                          (strcmp(*argv,"-accept") == 0))
 275                         {
 276                         if (--argc < 1) goto bad;
 277                         if (!extract_port(*(++argv),&port))
 278                                 goto bad;
 279                         }
 280                 else if (strcmp(*argv,"-verify") == 0)
 281                         {
 282                         s_server_verify=SSL_VERIFY_PEER|SSL_VERIFY_CLIENT_ONCE;
 283                         if (--argc < 1) goto bad;
 284                         verify_depth=atoi(*(++argv));
 285                         BIO_printf(bio_err,"verify depth is %d\n",verify_depth);
 286                         }
 287                 else if (strcmp(*argv,"-Verify") == 0)
 288                         {
 289                         s_server_verify=SSL_VERIFY_PEER|SSL_VERIFY_FAIL_IF_NO_PEER_CERT|
 290                                 SSL_VERIFY_CLIENT_ONCE;
 291                         if (--argc < 1) goto bad;
 292                         verify_depth=atoi(*(++argv));
 293                         BIO_printf(bio_err,"verify depth is %d, must return a certificate\n",verify_depth);
 294                         }
 295                 else if (strcmp(*argv,"-context") == 0)
 296                         {
 297                         if (--argc < 1) goto bad;
 298                         context= *(++argv);
 299                         }
 300                 else if (strcmp(*argv,"-cert") == 0)
 301                         {
 302                         if (--argc < 1) goto bad;
 303                         s_cert_file= *(++argv);
 304                         }
 305                 else if (strcmp(*argv,"-key") == 0)
 306                         {
 307                         if (--argc < 1) goto bad;
 308                         s_key_file= *(++argv);
 309                         }
 310                 else if (strcmp(*argv,"-dcert") == 0)
 311                         {
 312                         if (--argc < 1) goto bad;
 313                         s_dcert_file= *(++argv);
 314                         }
 315                 else if (strcmp(*argv,"-dkey") == 0)
 316                         {
 317                         if (--argc < 1) goto bad;
 318                         s_dkey_file= *(++argv);
 319                         }
 320                 else if (strcmp(*argv,"-nocert") == 0)
 321                         {
 322                         nocert=1;
 323                         }
 324                 else if (strcmp(*argv,"-CApath") == 0)
 325                         {
 326                         if (--argc < 1) goto bad;
 327                         CApath= *(++argv);
 328                         }
 329                 else if (strcmp(*argv,"-cipher") == 0)
 330                         {
 331                         if (--argc < 1) goto bad;
 332                         cipher= *(++argv);
 333                         }
 334                 else if (strcmp(*argv,"-CAfile") == 0)
 335                         {
 336                         if (--argc < 1) goto bad;
 337                         CAfile= *(++argv);
 338                         }
 339 #ifdef FIONBIO
 340                 else if (strcmp(*argv,"-nbio") == 0)
 341                         { s_nbio=1; }
 342 #endif
 343                 else if (strcmp(*argv,"-nbio_test") == 0)
 344                         {
 345 #ifdef FIONBIO
 346                         s_nbio=1;
 347 #endif
 348                         s_nbio_test=1;
 349                         }
 350                 else if (strcmp(*argv,"-debug") == 0)
 351                         { s_debug=1; }
 352                 else if (strcmp(*argv,"-hack") == 0)
 353                         { hack=1; }
 354                 else if (strcmp(*argv,"-state") == 0)
 355                         { state=1; }
 356                 else if (strcmp(*argv,"-quiet") == 0)
 357                         { s_quiet=1; }
 358                 else if (strcmp(*argv,"-bugs") == 0)
 359                         { bugs=1; }
 360                 else if (strcmp(*argv,"-no_tmp_rsa") == 0)
 361                         { no_tmp_rsa=1; }
 362                 else if (strcmp(*argv,"-www") == 0)
 363                         { www=1; }
 364                 else if (strcmp(*argv,"-WWW") == 0)
 365                         { www=2; }
 366                 else if (strcmp(*argv,"-no_ssl2") == 0)
 367                         { off|=SSL_OP_NO_SSLv2; }
 368                 else if (strcmp(*argv,"-no_ssl3") == 0)
 369                         { off|=SSL_OP_NO_SSLv3; }
 370                 else if (strcmp(*argv,"-no_tls1") == 0)
 371                         { off|=SSL_OP_NO_TLSv1; }
 372 #ifndef NO_SSL2
 373                 else if (strcmp(*argv,"-ssl2") == 0)
 374                         { meth=SSLv2_server_method(); }
 375 #endif
 376 #ifndef NO_SSL3
 377                 else if (strcmp(*argv,"-ssl3") == 0)
 378                         { meth=SSLv3_server_method(); }
 379 #endif
 380 #ifndef NO_TLS1
 381                 else if (strcmp(*argv,"-tls1") == 0)
 382                         { meth=TLSv1_server_method(); }
 383 #endif
 384                 else
 385                         {
 386                         BIO_printf(bio_err,"unknown option %s\n",*argv);
 387                         badop=1;
 388                         break;
 389                         }
 390                 argc--;
 391                 argv++;
 392                 }
 393         if (badop)
 394                 {
 395 bad:
 396                 sv_usage();
 397                 goto end;
 398                 }
 399
 400         if (bio_s_out == NULL)
 401                 {
 402                 if (s_quiet && !s_debug)
 403                         {
 404                         bio_s_out=BIO_new(BIO_s_null());
 405                         }
 406                 else
 407                         {
 408                         if (bio_s_out == NULL)
 409                                 bio_s_out=BIO_new_fp(stdout,BIO_NOCLOSE);
 410                         }
 411                 }
 412
 413 #if !defined(NO_RSA) || !defined(NO_DSA)
 414         if (nocert)
 415 #endif
 416                 {
 417                 s_cert_file=NULL;
 418                 s_key_file=NULL;
 419                 s_dcert_file=NULL;
 420                 s_dkey_file=NULL;
 421                 }
 422
 423         SSL_load_error_strings();
 424         SSLeay_add_ssl_algorithms();
 425
 426         ctx=SSL_CTX_new(meth);
 427         if (ctx == NULL)
 428                 {
 429                 ERR_print_errors(bio_err);
 430                 goto end;
 431                 }
 432
 433         SSL_CTX_set_quiet_shutdown(ctx,1);
 434         if (bugs) SSL_CTX_set_options(ctx,SSL_OP_ALL);
 435         if (hack) SSL_CTX_set_options(ctx,SSL_OP_NETSCAPE_DEMO_CIPHER_CHANGE_BUG);
 436         SSL_CTX_set_options(ctx,off);
 437         if (hack) SSL_CTX_set_options(ctx,SSL_OP_NON_EXPORT_FIRST);
 438
 439         if (state) SSL_CTX_set_info_callback(ctx,apps_ssl_info_callback);
 440
 441         SSL_CTX_sess_set_cache_size(ctx,128);
 442
 443 #if 0
 444         if (cipher == NULL) cipher=getenv("SSL_CIPHER");
 445 #endif
 446
 447 #if 0
 448         if (s_cert_file == NULL)
 449                 {
 450                 BIO_printf(bio_err,"You must specify a certificate file for the server to use\n");
 451                 goto end;
 452                 }
 453 #endif
 454
 455         if ((!SSL_CTX_load_verify_locations(ctx,CAfile,CApath)) ||
 456                 (!SSL_CTX_set_default_verify_paths(ctx)))
 457                 {
 458                 /* BIO_printf(bio_err,"X509_load_verify_locations\n"); */
 459                 ERR_print_errors(bio_err);
 460                 /* goto end; */
 461                 }
 462
 463 #ifndef NO_DH
 464         /* EAY EAY EAY evil hack */
 465         dh=load_dh_param();
 466         if (dh != NULL)
 467                 {
 468                 BIO_printf(bio_s_out,"Setting temp DH parameters\n");
 469                 }
 470         else
 471                 {
 472                 BIO_printf(bio_s_out,"Using default temp DH parameters\n");
 473                 dh=get_dh512();
 474                 }
 475         BIO_flush(bio_s_out);
 476
 477         SSL_CTX_set_tmp_dh(ctx,dh);
 478         DH_free(dh);
 479 #endif
 480
 481         if (!set_cert_stuff(ctx,s_cert_file,s_key_file))
 482                 goto end;
 483         if (s_dcert_file != NULL)
 484                 {
 485                 if (!set_cert_stuff(ctx,s_dcert_file,s_dkey_file))
 486                         goto end;
 487                 }
 488
 489 #if 1
 490         SSL_CTX_set_tmp_rsa_callback(ctx,tmp_rsa_cb);
 491 #else
 492         if (!no_tmp_rsa && SSL_CTX_need_tmp_RSA(ctx))
 493                 {
 494                 RSA *rsa;
 495
 496                 BIO_printf(bio_s_out,"Generating temp (512 bit) RSA key...");
 497                 BIO_flush(bio_s_out);
 498
 499                 rsa=RSA_generate_key(512,RSA_F4,NULL);
 500
 501                 if (!SSL_CTX_set_tmp_rsa(ctx,rsa))
 502                         {
 503                         ERR_print_errors(bio_err);
 504                         goto end;
 505                         }
 506                 RSA_free(rsa);
 507                 BIO_printf(bio_s_out,"\n");
 508                 }
 509 #endif
 510
 511         if (cipher != NULL)
 512                 SSL_CTX_set_cipher_list(ctx,cipher);
 513         SSL_CTX_set_verify(ctx,s_server_verify,verify_callback);
 514
 515         SSL_CTX_set_client_CA_list(ctx,SSL_load_client_CA_file(CAfile));
 516
 517         BIO_printf(bio_s_out,"ACCEPT\n");
 518         if (www)
 519                 do_server(port,&accept_socket,www_body, context);
 520         else
 521                 do_server(port,&accept_socket,sv_body, context);
 522         print_stats(bio_s_out,ctx);
 523         ret=0;
 524 end:
 525         if (ctx != NULL) SSL_CTX_free(ctx);
 526         if (bio_s_out != NULL)
 527                 {
 528                 BIO_free(bio_s_out);
 529                 bio_s_out=NULL;
 530                 }
 531         EXIT(ret);
 532         }
 533
 534 static void print_stats(BIO *bio, SSL_CTX *ssl_ctx)
 535         {
 536         BIO_printf(bio,"%4ld items in the session cache\n",
 537                 SSL_CTX_sess_number(ssl_ctx));
 538         BIO_printf(bio,"%4d client connects (SSL_connect())\n",
 539                 SSL_CTX_sess_connect(ssl_ctx));
 540         BIO_printf(bio,"%4d client renegotiates (SSL_connect())\n",
 541                 SSL_CTX_sess_connect_renegotiate(ssl_ctx));
 542         BIO_printf(bio,"%4d client connects that finished\n",
 543                 SSL_CTX_sess_connect_good(ssl_ctx));
 544         BIO_printf(bio,"%4d server accepts (SSL_accept())\n",
 545                 SSL_CTX_sess_accept(ssl_ctx));
 546         BIO_printf(bio,"%4d server renegotiates (SSL_accept())\n",
 547                 SSL_CTX_sess_accept_renegotiate(ssl_ctx));
 548         BIO_printf(bio,"%4d server accepts that finished\n",
 549                 SSL_CTX_sess_accept_good(ssl_ctx));
 550         BIO_printf(bio,"%4d session cache hits\n",SSL_CTX_sess_hits(ssl_ctx));
 551         BIO_printf(bio,"%4d session cache misses\n",SSL_CTX_sess_misses(ssl_ctx));
 552         BIO_printf(bio,"%4d session cache timeouts\n",SSL_CTX_sess_timeouts(ssl_ctx));
 553         BIO_printf(bio,"%4d callback cache hits\n",SSL_CTX_sess_cb_hits(ssl_ctx));
 554         BIO_printf(bio,"%4d cache full overflows (%d allowed)\n",
 555                 SSL_CTX_sess_cache_full(ssl_ctx),
 556                 SSL_CTX_sess_get_cache_size(ssl_ctx));
 557         }
 558
 559 static int sv_body(char *hostname, int s, char *context)
 560         {
 561         char *buf=NULL;
 562         fd_set readfds;
 563         int ret=1,width;
 564         int k,i;
 565         unsigned long l;
 566         SSL *con=NULL;
 567         BIO *sbio;
 568
 569         if ((buf=Malloc(bufsize)) == NULL)
 570                 {
 571                 BIO_printf(bio_err,"out of memory\n");
 572                 goto err;
 573                 }
 574 #ifdef FIONBIO
 575         if (s_nbio)
 576                 {
 577                 unsigned long sl=1;
 578
 579                 if (!s_quiet)
 580                         BIO_printf(bio_err,"turning on non blocking io\n");
 581                 if (BIO_socket_ioctl(s,FIONBIO,&sl) < 0)
 582                         ERR_print_errors(bio_err);
 583                 }
 584 #endif
 585
 586         if (con == NULL) {
 587                 con=(SSL *)SSL_new(ctx);
 588                 if(context)
 589                       SSL_set_session_id_context(con, context, strlen(context));
 590         }
 591         SSL_clear(con);
 592
 593         sbio=BIO_new_socket(s,BIO_NOCLOSE);
 594         if (s_nbio_test)
 595                 {
 596                 BIO *test;
 597
 598                 test=BIO_new(BIO_f_nbio_test());
 599                 sbio=BIO_push(test,sbio);
 600                 }
 601         SSL_set_bio(con,sbio,sbio);
 602         SSL_set_accept_state(con);
 603         /* SSL_set_fd(con,s); */
 604
 605         if (s_debug)
 606                 {
 607                 con->debug=1;
 608                 BIO_set_callback(SSL_get_rbio(con),bio_dump_cb);
 609                 BIO_set_callback_arg(SSL_get_rbio(con),bio_s_out);
 610                 }
 611
 612         width=s+1;
 613         for (;;)
 614                 {
 615                 FD_ZERO(&readfds);
 616 #ifndef WINDOWS
 617                 FD_SET(fileno(stdin),&readfds);
 618 #endif
 619                 FD_SET(s,&readfds);
 620                 i=select(width,&readfds,NULL,NULL,NULL);
 621                 if (i <= 0) continue;
 622                 if (FD_ISSET(fileno(stdin),&readfds))
 623                         {
 624                         i=read(fileno(stdin),buf,bufsize);
 625                         if (!s_quiet)
 626                                 {
 627                                 if ((i <= 0) || (buf[0] == 'Q'))
 628                                         {
 629                                         BIO_printf(bio_s_out,"DONE\n");
 630                                         SHUTDOWN(s);
 631                                         close_accept_socket();
 632                                         ret= -11;
 633                                         goto err;
 634                                         }
 635                                 if ((i <= 0) || (buf[0] == 'q'))
 636                                         {
 637                                         BIO_printf(bio_s_out,"DONE\n");
 638                                         SHUTDOWN(s);
 639         /*                              close_accept_socket();
 640                                         ret= -11;*/
 641                                         goto err;
 642                                         }
 643                                 if ((buf[0] == 'r') &&
 644                                         ((buf[1] == '\n') || (buf[1] == '\r')))
 645                                         {
 646                                         SSL_renegotiate(con);
 647                                         i=SSL_do_handshake(con);
 648                                         printf("SSL_do_handshake -> %d\n",i);
 649                                         i=0; /*13; */
 650                                         continue;
 651                                         /* strcpy(buf,"server side RE-NEGOTIATE\n"); */
 652                                         }
 653                                 if ((buf[0] == 'R') &&
 654                                         ((buf[1] == '\n') || (buf[1] == '\r')))
 655                                         {
 656                                         SSL_set_verify(con,
 657                                                 SSL_VERIFY_PEER|SSL_VERIFY_CLIENT_ONCE,NULL);
 658                                         SSL_renegotiate(con);
 659                                         i=SSL_do_handshake(con);
 660                                         printf("SSL_do_handshake -> %d\n",i);
 661                                         i=0; /* 13; */
 662                                         continue;
 663                                         /* strcpy(buf,"server side RE-NEGOTIATE asking for client cert\n"); */
 664                                         }
 665                                 if (buf[0] == 'P')
 666                                         {
 667                                         static char *str="Lets print some clear text\n";
 668                                         BIO_write(SSL_get_wbio(con),str,strlen(str));
 669                                         }
 670                                 if (buf[0] == 'S')
 671                                         {
 672                                         print_stats(bio_s_out,SSL_get_SSL_CTX(con));
 673                                         }
 674                                 }
 675                         l=k=0;
 676                         for (;;)
 677                                 {
 678                                 /* should do a select for the write */
 679 #ifdef RENEG
 680 { static count=0; if (++count == 100) { count=0; SSL_renegotiate(con); } }
 681 #endif
 682                                 k=SSL_write(con,&(buf[l]),(unsigned int)i);
 683                                 switch (SSL_get_error(con,k))
 684                                         {
 685                                 case SSL_ERROR_NONE:
 686                                         break;
 687                                 case SSL_ERROR_WANT_WRITE:
 688                                 case SSL_ERROR_WANT_READ:
 689                                 case SSL_ERROR_WANT_X509_LOOKUP:
 690                                         BIO_printf(bio_s_out,"Write BLOCK\n");
 691                                         break;
 692                                 case SSL_ERROR_SYSCALL:
 693                                 case SSL_ERROR_SSL:
 694                                         BIO_printf(bio_s_out,"ERROR\n");
 695                                         ERR_print_errors(bio_err);
 696                                         ret=1;
 697                                         goto err;
 698                                         /* break; */
 699                                 case SSL_ERROR_ZERO_RETURN:
 700                                         BIO_printf(bio_s_out,"DONE\n");
 701                                         ret=1;
 702                                         goto err;
 703                                         }
 704                                 l+=k;
 705                                 i-=k;
 706                                 if (i <= 0) break;
 707                                 }
 708                         }
 709                 if (FD_ISSET(s,&readfds))
 710                         {
 711                         if (!SSL_is_init_finished(con))
 712                                 {
 713                                 i=init_ssl_connection(con);
 714
 715                                 if (i < 0)
 716                                         {
 717                                         ret=0;
 718                                         goto err;
 719                                         }
 720                                 else if (i == 0)
 721                                         {
 722                                         ret=1;
 723                                         goto err;
 724                                         }
 725                                 }
 726                         else
 727                                 {
 728 again:
 729                                 i=SSL_read(con,(char *)buf,bufsize);
 730                                 switch (SSL_get_error(con,i))
 731                                         {
 732                                 case SSL_ERROR_NONE:
 733                                         write(fileno(stdout),buf,
 734                                                 (unsigned int)i);
 735                                         if (SSL_pending(con)) goto again;
 736                                         break;
 737                                 case SSL_ERROR_WANT_WRITE:
 738                                 case SSL_ERROR_WANT_READ:
 739                                 case SSL_ERROR_WANT_X509_LOOKUP:
 740                                         BIO_printf(bio_s_out,"Read BLOCK\n");
 741                                         break;
 742                                 case SSL_ERROR_SYSCALL:
 743                                 case SSL_ERROR_SSL:
 744                                         BIO_printf(bio_s_out,"ERROR\n");
 745                                         ERR_print_errors(bio_err);
 746                                         ret=1;
 747                                         goto err;
 748                                 case SSL_ERROR_ZERO_RETURN:
 749                                         BIO_printf(bio_s_out,"DONE\n");
 750                                         ret=1;
 751                                         goto err;
 752                                         }
 753                                 }
 754                         }
 755                 }
 756 err:
 757         BIO_printf(bio_s_out,"shutting down SSL\n");
 758 #if 1
 759         SSL_set_shutdown(con,SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);
 760 #else
 761         SSL_shutdown(con);
 762 #endif
 763         if (con != NULL) SSL_free(con);
 764         BIO_printf(bio_s_out,"CONNECTION CLOSED\n");
 765         if (buf != NULL)
 766                 {
 767                 memset(buf,0,bufsize);
 768                 Free(buf);
 769                 }
 770         if (ret >= 0)
 771                 BIO_printf(bio_s_out,"ACCEPT\n");
 772         return(ret);
 773         }
 774
 775 static void close_accept_socket(void)
 776         {
 777         BIO_printf(bio_err,"shutdown accept socket\n");
 778         if (accept_socket >= 0)
 779                 {
 780                 SHUTDOWN2(accept_socket);
 781                 }
 782         }
 783
 784 static int init_ssl_connection(SSL *con)
 785         {
 786         int i;
 787         const char *str;
 788         X509 *peer;
 789         long verify_error;
 790         MS_STATIC char buf[BUFSIZ];
 791
 792         if ((i=SSL_accept(con)) <= 0)
 793                 {
 794                 if (BIO_sock_should_retry(i))
 795                         {
 796                         BIO_printf(bio_s_out,"DELAY\n");
 797                         return(1);
 798                         }
 799
 800                 BIO_printf(bio_err,"ERROR\n");
 801                 verify_error=SSL_get_verify_result(con);
 802                 if (verify_error != X509_V_OK)
 803                         {
 804                         BIO_printf(bio_err,"verify error:%s\n",
 805                                 X509_verify_cert_error_string(verify_error));
 806                         }
 807                 else
 808                         ERR_print_errors(bio_err);
 809                 return(0);
 810                 }
 811
 812         PEM_write_bio_SSL_SESSION(bio_s_out,SSL_get_session(con));
 813
 814         peer=SSL_get_peer_certificate(con);
 815         if (peer != NULL)
 816                 {
 817                 BIO_printf(bio_s_out,"Client certificate\n");
 818                 PEM_write_bio_X509(bio_s_out,peer);
 819                 X509_NAME_oneline(X509_get_subject_name(peer),buf,BUFSIZ);
 820                 BIO_printf(bio_s_out,"subject=%s\n",buf);
 821                 X509_NAME_oneline(X509_get_issuer_name(peer),buf,BUFSIZ);
 822                 BIO_printf(bio_s_out,"issuer=%s\n",buf);
 823                 X509_free(peer);
 824                 }
 825
 826         if (SSL_get_shared_ciphers(con,buf,BUFSIZ) != NULL)
 827                 BIO_printf(bio_s_out,"Shared ciphers:%s\n",buf);
 828         str=SSL_CIPHER_get_name(SSL_get_current_cipher(con));
 829         BIO_printf(bio_s_out,"CIPHER is %s\n",(str != NULL)?str:"(NONE)");
 830         if (con->hit) BIO_printf(bio_s_out,"Reused session-id\n");
 831         if (SSL_ctrl(con,SSL_CTRL_GET_FLAGS,0,NULL) &
 832                 TLS1_FLAGS_TLS_PADDING_BUG)
 833                 BIO_printf(bio_s_out,"Peer has incorrect TLSv1 block padding\n");
 834
 835         return(1);
 836         }
 837
 838 #ifndef NO_DH
 839 static DH *load_dh_param(void)
 840         {
 841         DH *ret=NULL;
 842         BIO *bio;
 843
 844         if ((bio=BIO_new_file(DH_PARAM,"r")) == NULL)
 845                 goto err;
 846         ret=PEM_read_bio_DHparams(bio,NULL,NULL);
 847 err:
 848         if (bio != NULL) BIO_free(bio);
 849         return(ret);
 850         }
 851 #endif
 852
 853 #if 0
 854 static int load_CA(SSL_CTX *ctx, char *file)
 855         {
 856         FILE *in;
 857         X509 *x=NULL;
 858
 859         if ((in=fopen(file,"r")) == NULL)
 860                 return(0);
 861
 862         for (;;)
 863                 {
 864                 if (PEM_read_X509(in,&x,NULL) == NULL)
 865                         break;
 866                 SSL_CTX_add_client_CA(ctx,x);
 867                 }
 868         if (x != NULL) X509_free(x);
 869         fclose(in);
 870         return(1);
 871         }
 872 #endif
 873
 874 static int www_body(char *hostname, int s, char *context)
 875         {
 876         char *buf=NULL;
 877         int ret=1;
 878         int i,j,k,blank,dot;
 879         struct stat st_buf;
 880         SSL *con;
 881         SSL_CIPHER *c;
 882         BIO *io,*ssl_bio,*sbio;
 883         long total_bytes;
 884
 885         buf=Malloc(bufsize);
 886         if (buf == NULL) return(0);
 887         io=BIO_new(BIO_f_buffer());
 888         ssl_bio=BIO_new(BIO_f_ssl());
 889         if ((io == NULL) || (ssl_bio == NULL)) goto err;
 890
 891 #ifdef FIONBIO
 892         if (s_nbio)
 893                 {
 894                 unsigned long sl=1;
 895
 896                 if (!s_quiet)
 897                         BIO_printf(bio_err,"turning on non blocking io\n");
 898                 if (BIO_socket_ioctl(s,FIONBIO,&sl) < 0)
 899                         ERR_print_errors(bio_err);
 900                 }
 901 #endif
 902
 903         /* lets make the output buffer a reasonable size */
 904         if (!BIO_set_write_buffer_size(io,bufsize)) goto err;
 905
 906         if ((con=(SSL *)SSL_new(ctx)) == NULL) goto err;
 907         if(context) SSL_set_session_id_context(con, context, strlen(context));
 908
 909         sbio=BIO_new_socket(s,BIO_NOCLOSE);
 910         if (s_nbio_test)
 911                 {
 912                 BIO *test;
 913
 914                 test=BIO_new(BIO_f_nbio_test());
 915                 sbio=BIO_push(test,sbio);
 916                 }
 917         SSL_set_bio(con,sbio,sbio);
 918         SSL_set_accept_state(con);
 919
 920         /* SSL_set_fd(con,s); */
 921         BIO_set_ssl(ssl_bio,con,BIO_CLOSE);
 922         BIO_push(io,ssl_bio);
 923
 924         if (s_debug)
 925                 {
 926                 con->debug=1;
 927                 BIO_set_callback(SSL_get_rbio(con),bio_dump_cb);
 928                 BIO_set_callback_arg(SSL_get_rbio(con),bio_s_out);
 929                 }
 930
 931         blank=0;
 932         for (;;)
 933                 {
 934                 if (hack)
 935                         {
 936                         i=SSL_accept(con);
 937
 938                         switch (SSL_get_error(con,i))
 939                                 {
 940                         case SSL_ERROR_NONE:
 941                                 break;
 942                         case SSL_ERROR_WANT_WRITE:
 943                         case SSL_ERROR_WANT_READ:
 944                         case SSL_ERROR_WANT_X509_LOOKUP:
 945                                 continue;
 946                         case SSL_ERROR_SYSCALL:
 947                         case SSL_ERROR_SSL:
 948                         case SSL_ERROR_ZERO_RETURN:
 949                                 ret=1;
 950                                 goto err;
 951                                 /* break; */
 952                                 }
 953
 954                         SSL_renegotiate(con);
 955                         SSL_write(con,NULL,0);
 956                         }
 957
 958                 i=BIO_gets(io,buf,bufsize-1);
 959                 if (i < 0) /* error */
 960                         {
 961                         if (!BIO_should_retry(io))
 962                                 {
 963                                 if (!s_quiet)
 964                                         ERR_print_errors(bio_err);
 965                                 goto err;
 966                                 }
 967                         else
 968                                 {
 969                                 BIO_printf(bio_s_out,"read R BLOCK\n");
 970 #ifndef MSDOS
 971                                 sleep(1);
 972 #endif
 973                                 continue;
 974                                 }
 975                         }
 976                 else if (i == 0) /* end of input */
 977                         {
 978                         ret=1;
 979                         goto end;
 980                         }
 981
 982                 /* else we have data */
 983                 if (    ((www == 1) && (strncmp("GET ",buf,4) == 0)) ||
 984                         ((www == 2) && (strncmp("GET /stats ",buf,10) == 0)))
 985                         {
 986                         char *p;
 987                         X509 *peer;
 988                         STACK_OF(SSL_CIPHER) *sk;
 989                         static char *space="                          ";
 990
 991                         BIO_puts(io,"HTTP/1.0 200 ok\r\nContent-type: text/html\r\n\r\n");
 992                         BIO_puts(io,"<HTML><BODY BGCOLOR=ffffff>\n");
 993                         BIO_puts(io,"<pre>\n");
 994 /*                      BIO_puts(io,SSLeay_version(SSLEAY_VERSION));*/
 995                         BIO_puts(io,"\n");
 996                         for (i=0; i<local_argc; i++)
 997                                 {
 998                                 BIO_puts(io,local_argv[i]);
 999                                 BIO_write(io," ",1);
1000                                 }
1001                         BIO_puts(io,"\n");
1002
1003                         /* The following is evil and should not really
1004                          * be done */
1005                         BIO_printf(io,"Ciphers supported in s_server binary\n");
1006                         sk=SSL_get_ciphers(con);
1007                         j=sk_SSL_CIPHER_num(sk);
1008                         for (i=0; i<j; i++)
1009                                 {
1010                                 c=sk_SSL_CIPHER_value(sk,i);
1011                                 BIO_printf(io,"%-11s:%-25s",
1012                                         SSL_CIPHER_get_version(c),
1013                                         SSL_CIPHER_get_name(c));
1014                                 if ((((i+1)%2) == 0) && (i+1 != j))
1015                                         BIO_puts(io,"\n");
1016                                 }
1017                         BIO_puts(io,"\n");
1018                         p=SSL_get_shared_ciphers(con,buf,bufsize);
1019                         if (p != NULL)
1020                                 {
1021                                 BIO_printf(io,"---\nCiphers common between both SSL end points:\n");
1022                                 j=i=0;
1023                                 while (*p)
1024                                         {
1025                                         if (*p == ':')
1026                                                 {
1027                                                 BIO_write(io,space,26-j);
1028                                                 i++;
1029                                                 j=0;
1030                                                 BIO_write(io,((i%3)?" ":"\n"),1);
1031                                                 }
1032                                         else
1033                                                 {
1034                                                 BIO_write(io,p,1);
1035                                                 j++;
1036                                                 }
1037                                         p++;
1038                                         }
1039                                 BIO_puts(io,"\n");
1040                                 }
1041                         BIO_printf(io,((con->hit)
1042                                 ?"---\nReused, "
1043                                 :"---\nNew, "));
1044                         c=SSL_get_current_cipher(con);
1045                         BIO_printf(io,"%s, Cipher is %s\n",
1046                                 SSL_CIPHER_get_version(c),
1047                                 SSL_CIPHER_get_name(c));
1048                         SSL_SESSION_print(io,SSL_get_session(con));
1049                         BIO_printf(io,"---\n");
1050                         print_stats(io,SSL_get_SSL_CTX(con));
1051                         BIO_printf(io,"---\n");
1052                         peer=SSL_get_peer_certificate(con);
1053                         if (peer != NULL)
1054                                 {
1055                                 BIO_printf(io,"Client certificate\n");
1056                                 X509_print(io,peer);
1057                                 PEM_write_bio_X509(io,peer);
1058                                 }
1059                         else
1060                                 BIO_puts(io,"no client certificate available\n");
1061                         BIO_puts(io,"</BODY></HTML>\r\n\r\n");
1062                         break;
1063                         }
1064                 else if ((www == 2) && (strncmp("GET ",buf,4) == 0))
1065                         {
1066                         BIO *file;
1067                         char *p,*e;
1068                         static char *text="HTTP/1.0 200 ok\r\nContent-type: text/plain\r\n\r\n";
1069
1070                         /* skip the '/' */
1071                         p= &(buf[5]);
1072                         dot=0;
1073                         for (e=p; *e != '\0'; e++)
1074                                 {
1075                                 if (e[0] == ' ') break;
1076                                 if (    (e[0] == '.') &&
1077                                         (strncmp(&(e[-1]),"/../",4) == 0))
1078                                         dot=1;
1079                                 }
1080
1081
1082                         if (*e == '\0')
1083                                 {
1084                                 BIO_puts(io,text);
1085                                 BIO_printf(io,"'%s' is an invalid file name\r\n",p);
1086                                 break;
1087                                 }
1088                         *e='\0';
1089
1090                         if (dot)
1091                                 {
1092                                 BIO_puts(io,text);
1093                                 BIO_printf(io,"'%s' contains '..' reference\r\n",p);
1094                                 break;
1095                                 }
1096
1097                         if (*p == '/')
1098                                 {
1099                                 BIO_puts(io,text);
1100                                 BIO_printf(io,"'%s' is an invalid path\r\n",p);
1101                                 break;
1102                                 }
1103
1104                         /* append if a directory lookup */
1105                         if (e[-1] == '/')
1106                                 strcat(p,"index.html");
1107
1108                         /* if a directory, do the index thang */
1109                         if (stat(p,&st_buf) < 0)
1110                                 {
1111                                 BIO_puts(io,text);
1112                                 BIO_printf(io,"Error accessing '%s'\r\n",p);
1113                                 ERR_print_errors(io);
1114                                 break;
1115                                 }
1116                         if (S_ISDIR(st_buf.st_mode))
1117                                 {
1118                                 strcat(p,"/index.html");
1119                                 }
1120
1121                         if ((file=BIO_new_file(p,"r")) == NULL)
1122                                 {
1123                                 BIO_puts(io,text);
1124                                 BIO_printf(io,"Error opening '%s'\r\n",p);
1125                                 ERR_print_errors(io);
1126                                 break;
1127                                 }
1128
1129                         if (!s_quiet)
1130                                 BIO_printf(bio_err,"FILE:%s\n",p);
1131
1132                         i=strlen(p);
1133                         if (    ((i > 5) && (strcmp(&(p[i-5]),".html") == 0)) ||
1134                                 ((i > 4) && (strcmp(&(p[i-4]),".php") == 0)) ||
1135                                 ((i > 4) && (strcmp(&(p[i-4]),".htm") == 0)))
1136                                 BIO_puts(io,"HTTP/1.0 200 ok\r\nContent-type: text/html\r\n\r\n");
1137                         else
1138                                 BIO_puts(io,"HTTP/1.0 200 ok\r\nContent-type: text/plain\r\n\r\n");
1139                         /* send the file */
1140                         total_bytes=0;
1141                         for (;;)
1142                                 {
1143                                 i=BIO_read(file,buf,bufsize);
1144                                 if (i <= 0) break;
1145
1146 #ifdef RENEG
1147                                 total_bytes+=i;
1148                                 fprintf(stderr,"%d\n",i);
1149                                 if (total_bytes > 3*1024)
1150                                         {
1151                                         total_bytes=0;
1152                                         fprintf(stderr,"RENEGOTIATE\n");
1153                                         SSL_renegotiate(con);
1154                                         }
1155 #endif
1156
1157                                 for (j=0; j<i; )
1158                                         {
1159 #ifdef RENEG
1160 { static count=0; if (++count == 13) { SSL_renegotiate(con); } }
1161 #endif
1162                                         k=BIO_write(io,&(buf[j]),i-j);
1163                                         if (k <= 0)
1164                                                 {
1165                                                 if (!BIO_should_retry(io))
1166                                                         goto write_error;
1167                                                 else
1168                                                         {
1169                                                         BIO_printf(bio_s_out,"rwrite W BLOCK\n");
1170                                                         }
1171                                                 }
1172                                         else
1173                                                 {
1174                                                 j+=k;
1175                                                 }
1176                                         }
1177                                 }
1178 write_error:
1179                         BIO_free(file);
1180                         break;
1181                         }
1182                 }
1183
1184         for (;;)
1185                 {
1186                 i=(int)BIO_flush(io);
1187                 if (i <= 0)
1188                         {
1189                         if (!BIO_should_retry(io))
1190                                 break;
1191                         }
1192                 else
1193                         break;
1194                 }
1195 end:
1196 #if 1
1197         /* make sure we re-use sessions */
1198         SSL_set_shutdown(con,SSL_SENT_SHUTDOWN|SSL_RECEIVED_SHUTDOWN);
1199 #else
1200         /* This kills performace */
1201 /*      SSL_shutdown(con); A shutdown gets sent in the
1202  *      BIO_free_all(io) procession */
1203 #endif
1204
1205 err:
1206
1207         if (ret >= 0)
1208                 BIO_printf(bio_s_out,"ACCEPT\n");
1209
1210         if (buf != NULL) Free(buf);
1211         if (io != NULL) BIO_free_all(io);
1212 /*      if (ssl_bio != NULL) BIO_free(ssl_bio);*/
1213         return(ret);
1214         }
1215
1216 static RSA MS_CALLBACK *tmp_rsa_cb(SSL *s, int export, int keylength)
1217         {
1218         static RSA *rsa_tmp=NULL;
1219
1220         if (rsa_tmp == NULL)
1221                 {
1222                 if (!s_quiet)
1223                         {
1224                         BIO_printf(bio_err,"Generating temp (%d bit) RSA key...",keylength);
1225                         BIO_flush(bio_err);
1226                         }
1227 #ifndef NO_RSA
1228                 rsa_tmp=RSA_generate_key(keylength,RSA_F4,NULL,NULL);
1229 #endif
1230                 if (!s_quiet)
1231                         {
1232                         BIO_printf(bio_err,"\n");
1233                         BIO_flush(bio_err);
1234                         }
1235                 }
1236         return(rsa_tmp);
1237         }