crypto/bio/b_sock.c

   1 /* crypto/bio/b_sock.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 #ifndef NO_SOCK
  60
  61 #include <stdio.h>
  62 #include <stdlib.h>
  63 #include <errno.h>
  64 #define USE_SOCKETS
  65 #include "cryptlib.h"
  66 #include <openssl/bio.h>
  67
  68 #ifdef WIN16
  69 #define SOCKET_PROTOCOL 0 /* more microsoft stupidity */
  70 #else
  71 #define SOCKET_PROTOCOL IPPROTO_TCP
  72 #endif
  73
  74 #ifdef SO_MAXCONN
  75 #define MAX_LISTEN  SOMAXCONN
  76 #elif defined(SO_MAXCONN)
  77 #define MAX_LISTEN  SO_MAXCONN
  78 #else
  79 #define MAX_LISTEN  32
  80 #endif
  81
  82 #ifdef WINDOWS
  83 static int wsa_init_done=0;
  84 #endif
  85
  86 static unsigned long BIO_ghbn_hits=0L;
  87 static unsigned long BIO_ghbn_miss=0L;
  88
  89 #define GHBN_NUM        4
  90 static struct ghbn_cache_st
  91         {
  92         char name[129];
  93         struct hostent *ent;
  94         unsigned long order;
  95         } ghbn_cache[GHBN_NUM];
  96
  97 static int get_ip(const char *str,unsigned char *ip);
  98 static void ghbn_free(struct hostent *a);
  99 static struct hostent *ghbn_dup(struct hostent *a);
 100 int BIO_get_host_ip(const char *str, unsigned char *ip)
 101         {
 102         int i;
 103         struct hostent *he;
 104
 105         i=get_ip(str,ip);
 106         if (i > 0) return(1);
 107         if (i < 0)
 108                 {
 109                 BIOerr(BIO_F_BIO_GET_HOST_IP,BIO_R_INVALID_IP_ADDRESS);
 110                 ERR_add_error_data(2,"host=",str);
 111                 return(0);
 112                 }
 113         else
 114                 { /* do a gethostbyname */
 115                 if (!BIO_sock_init()) return(0);
 116
 117                 he=BIO_gethostbyname(str);
 118                 if (he == NULL)
 119                         {
 120                         BIOerr(BIO_F_BIO_GET_HOST_IP,BIO_R_BAD_HOSTNAME_LOOKUP);
 121                         ERR_add_error_data(2,"host=",str);
 122                         return(0);
 123                         }
 124
 125                 /* cast to short because of win16 winsock definition */
 126                 if ((short)he->h_addrtype != AF_INET)
 127                         {
 128                         BIOerr(BIO_F_BIO_GET_HOST_IP,BIO_R_GETHOSTBYNAME_ADDR_IS_NOT_AF_INET);
 129                         ERR_add_error_data(2,"host=",str);
 130                         return(0);
 131                         }
 132                 for (i=0; i<4; i++)
 133                         ip[i]=he->h_addr_list[0][i];
 134                 }
 135         return(1);
 136         }
 137
 138 int BIO_get_port(const char *str, unsigned short *port_ptr)
 139         {
 140         int i;
 141         struct servent *s;
 142
 143         if (str == NULL)
 144                 {
 145                 BIOerr(BIO_F_BIO_GET_PORT,BIO_R_NO_PORT_DEFINED);
 146                 return(0);
 147                 }
 148         i=atoi(str);
 149         if (i != 0)
 150                 *port_ptr=(unsigned short)i;
 151         else
 152                 {
 153                 CRYPTO_w_lock(CRYPTO_LOCK_GETSERVBYNAME);
 154                 s=getservbyname(str,"tcp");
 155                 if(s != NULL)
 156                         *port_ptr=ntohs((unsigned short)s->s_port);
 157                 CRYPTO_w_unlock(CRYPTO_LOCK_GETSERVBYNAME);
 158                 if(s == NULL)
 159                         {
 160                         if (strcmp(str,"http") == 0)
 161                                 *port_ptr=80;
 162                         else if (strcmp(str,"telnet") == 0)
 163                                 *port_ptr=23;
 164                         else if (strcmp(str,"socks") == 0)
 165                                 *port_ptr=1080;
 166                         else if (strcmp(str,"https") == 0)
 167                                 *port_ptr=443;
 168                         else if (strcmp(str,"ssl") == 0)
 169                                 *port_ptr=443;
 170                         else if (strcmp(str,"ftp") == 0)
 171                                 *port_ptr=21;
 172                         else if (strcmp(str,"gopher") == 0)
 173                                 *port_ptr=70;
 174 #if 0
 175                         else if (strcmp(str,"wais") == 0)
 176                                 *port_ptr=21;
 177 #endif
 178                         else
 179                                 {
 180                                 SYSerr(SYS_F_GETSERVBYNAME,get_last_socket_error());
 181                                 ERR_add_error_data(3,"service='",str,"'");
 182                                 return(0);
 183                                 }
 184                         }
 185                 }
 186         return(1);
 187         }
 188
 189 int BIO_sock_error(int sock)
 190         {
 191         int j,i;
 192         int size;
 193
 194         size=sizeof(int);
 195         /* Note: under Windows the third parameter is of type (char *)
 196          * whereas under other systems it is (void *) if you don't have
 197          * a cast it will choke the compiler: if you do have a cast then
 198          * you can either go for (char *) or (void *).
 199          */
 200         i=getsockopt(sock,SOL_SOCKET,SO_ERROR,(void *)&j,(void *)&size);
 201         if (i < 0)
 202                 return(1);
 203         else
 204                 return(j);
 205         }
 206
 207 long BIO_ghbn_ctrl(int cmd, int iarg, char *parg)
 208         {
 209         int i;
 210         char **p;
 211
 212         switch (cmd)
 213                 {
 214         case BIO_GHBN_CTRL_HITS:
 215                 return(BIO_ghbn_hits);
 216                 /* break; */
 217         case BIO_GHBN_CTRL_MISSES:
 218                 return(BIO_ghbn_miss);
 219                 /* break; */
 220         case BIO_GHBN_CTRL_CACHE_SIZE:
 221                 return(GHBN_NUM);
 222                 /* break; */
 223         case BIO_GHBN_CTRL_GET_ENTRY:
 224                 if ((iarg >= 0) && (iarg <GHBN_NUM) &&
 225                         (ghbn_cache[iarg].order > 0))
 226                         {
 227                         p=(char **)parg;
 228                         if (p == NULL) return(0);
 229                         *p=ghbn_cache[iarg].name;
 230                         ghbn_cache[iarg].name[128]='\0';
 231                         return(1);
 232                         }
 233                 return(0);
 234                 /* break; */
 235         case BIO_GHBN_CTRL_FLUSH:
 236                 for (i=0; i<GHBN_NUM; i++)
 237                         ghbn_cache[i].order=0;
 238                 break;
 239         default:
 240                 return(0);
 241                 }
 242         return(1);
 243         }
 244
 245 static struct hostent *ghbn_dup(struct hostent *a)
 246         {
 247         struct hostent *ret;
 248         int i,j;
 249
 250         MemCheck_off();
 251         ret=(struct hostent *)Malloc(sizeof(struct hostent));
 252         if (ret == NULL) return(NULL);
 253         memset(ret,0,sizeof(struct hostent));
 254
 255         for (i=0; a->h_aliases[i] != NULL; i++)
 256                 ;
 257         i++;
 258         ret->h_aliases = (char **)Malloc(i*sizeof(char *));
 259         if (ret->h_aliases == NULL)
 260                 goto err;
 261         memset(ret->h_aliases, 0, i*sizeof(char *));
 262
 263         for (i=0; a->h_addr_list[i] != NULL; i++)
 264                 ;
 265         i++;
 266         ret->h_addr_list=(char **)Malloc(i*sizeof(char *));
 267         if (ret->h_addr_list == NULL)
 268                 goto err;
 269         memset(ret->h_addr_list, 0, i*sizeof(char *));
 270
 271         j=strlen(a->h_name)+1;
 272         if ((ret->h_name=Malloc(j)) == NULL) goto err;
 273         memcpy((char *)ret->h_name,a->h_name,j+1);
 274         for (i=0; a->h_aliases[i] != NULL; i++)
 275                 {
 276                 j=strlen(a->h_aliases[i])+1;
 277                 if ((ret->h_aliases[i]=Malloc(j)) == NULL) goto err;
 278                 memcpy(ret->h_aliases[i],a->h_aliases[i],j+1);
 279                 }
 280         ret->h_length=a->h_length;
 281         ret->h_addrtype=a->h_addrtype;
 282         for (i=0; a->h_addr_list[i] != NULL; i++)
 283                 {
 284                 if ((ret->h_addr_list[i]=Malloc(a->h_length)) == NULL)
 285                         goto err;
 286                 memcpy(ret->h_addr_list[i],a->h_addr_list[i],a->h_length);
 287                 }
 288         if (0)
 289                 {
 290 err:
 291                 if (ret != NULL)
 292                         ghbn_free(ret);
 293                 ret=NULL;
 294                 }
 295         MemCheck_on();
 296         return(ret);
 297         }
 298
 299 static void ghbn_free(struct hostent *a)
 300         {
 301         int i;
 302
 303         if(a == NULL)
 304             return;
 305
 306         if (a->h_aliases != NULL)
 307                 {
 308                 for (i=0; a->h_aliases[i] != NULL; i++)
 309                         Free(a->h_aliases[i]);
 310                 Free(a->h_aliases);
 311                 }
 312         if (a->h_addr_list != NULL)
 313                 {
 314                 for (i=0; a->h_addr_list[i] != NULL; i++)
 315                         Free(a->h_addr_list[i]);
 316                 Free(a->h_addr_list);
 317                 }
 318         if (a->h_name != NULL) Free((char *)a->h_name);
 319         Free(a);
 320         }
 321
 322 struct hostent *BIO_gethostbyname(const char *name)
 323         {
 324         struct hostent *ret;
 325         int i,lowi=0,j;
 326         unsigned long low= (unsigned long)-1;
 327
 328 /*      return(gethostbyname(name)); */
 329
 330         CRYPTO_w_lock(CRYPTO_LOCK_GETHOSTBYNAME);
 331         j=strlen(name);
 332         if (j < 128)
 333                 {
 334                 for (i=0; i<GHBN_NUM; i++)
 335                         {
 336                         if (low > ghbn_cache[i].order)
 337                                 {
 338                                 low=ghbn_cache[i].order;
 339                                 lowi=i;
 340                                 }
 341                         if (ghbn_cache[i].order > 0)
 342                                 {
 343                                 if (strncmp(name,ghbn_cache[i].name,128) == 0)
 344                                         break;
 345                                 }
 346                         }
 347                 }
 348         else
 349                 i=GHBN_NUM;
 350
 351         if (i == GHBN_NUM) /* no hit*/
 352                 {
 353                 BIO_ghbn_miss++;
 354                 ret=gethostbyname(name);
 355
 356                 if (ret == NULL)
 357                         goto end;
 358                 if (j > 128) /* too big to cache */
 359                         {
 360                         ret = NULL;
 361                         goto end;
 362                         }
 363
 364                 /* else add to cache */
 365                 if (ghbn_cache[lowi].ent != NULL)
 366                         ghbn_free(ghbn_cache[lowi].ent); /* XXX not thread-safe */
 367                 ghbn_cache[lowi].name[0] = '\0';
 368
 369                 if((ret=ghbn_cache[lowi].ent=ghbn_dup(ret)) == NULL)
 370                         {
 371                         BIOerr(BIO_F_BIO_GETHOSTBYNAME,ERR_R_MALLOC_FAILURE);
 372                         goto end;
 373                         }
 374                 strncpy(ghbn_cache[lowi].name,name,128);
 375                 ghbn_cache[lowi].order=BIO_ghbn_miss+BIO_ghbn_hits;
 376                 }
 377         else
 378                 {
 379                 BIO_ghbn_hits++;
 380                 ret= ghbn_cache[i].ent;
 381                 ghbn_cache[i].order=BIO_ghbn_miss+BIO_ghbn_hits;
 382                 }
 383 end:
 384         CRYPTO_w_unlock(CRYPTO_LOCK_GETHOSTBYNAME);
 385         return(ret);
 386         }
 387
 388 int BIO_sock_init(void)
 389         {
 390 #ifdef WINDOWS
 391         static struct WSAData wsa_state;
 392
 393         if (!wsa_init_done)
 394                 {
 395                 int err;
 396
 397 #ifdef SIGINT
 398                 signal(SIGINT,(void (*)(int))BIO_sock_cleanup);
 399 #endif
 400                 wsa_init_done=1;
 401                 memset(&wsa_state,0,sizeof(wsa_state));
 402                 if (WSAStartup(0x0101,&wsa_state)!=0)
 403                         {
 404                         err=WSAGetLastError();
 405                         SYSerr(SYS_F_WSASTARTUP,err);
 406                         BIOerr(BIO_F_BIO_SOCK_INIT,BIO_R_WSASTARTUP);
 407                         return(-1);
 408                         }
 409                 }
 410 #endif /* WINDOWS */
 411         return(1);
 412         }
 413
 414 void BIO_sock_cleanup(void)
 415         {
 416 #ifdef WINDOWS
 417         if (wsa_init_done)
 418                 {
 419                 wsa_init_done=0;
 420                 WSACancelBlockingCall();
 421                 WSACleanup();
 422                 }
 423 #endif
 424         }
 425
 426 #if !defined(VMS) || __VMS_VER >= 70000000
 427
 428 int BIO_socket_ioctl(int fd, long type, unsigned long *arg)
 429         {
 430         int i;
 431
 432         i=ioctlsocket(fd,type,arg);
 433         if (i < 0)
 434                 SYSerr(SYS_F_IOCTLSOCKET,get_last_socket_error());
 435         return(i);
 436         }
 437 #endif /* __VMS_VER */
 438
 439 /* The reason I have implemented this instead of using sscanf is because
 440  * Visual C 1.52c gives an unresolved external when linking a DLL :-( */
 441 static int get_ip(const char *str, unsigned char ip[4])
 442         {
 443         unsigned int tmp[4];
 444         int num=0,c,ok=0;
 445
 446         tmp[0]=tmp[1]=tmp[2]=tmp[3]=0;
 447
 448         for (;;)
 449                 {
 450                 c= *(str++);
 451                 if ((c >= '0') && (c <= '9'))
 452                         {
 453                         ok=1;
 454                         tmp[num]=tmp[num]*10+c-'0';
 455                         if (tmp[num] > 255) return(-1);
 456                         }
 457                 else if (c == '.')
 458                         {
 459                         if (!ok) return(-1);
 460                         if (num == 3) break;
 461                         num++;
 462                         ok=0;
 463                         }
 464                 else if ((num == 3) && ok)
 465                         break;
 466                 else
 467                         return(0);
 468                 }
 469         ip[0]=tmp[0];
 470         ip[1]=tmp[1];
 471         ip[2]=tmp[2];
 472         ip[3]=tmp[3];
 473         return(1);
 474         }
 475
 476 int BIO_get_accept_socket(char *host, int bind_mode)
 477         {
 478         int ret=0;
 479         struct sockaddr_in server,client;
 480         int s= -1,cs;
 481         unsigned char ip[4];
 482         unsigned short port;
 483         char *str,*e;
 484         const char *h,*p;
 485         unsigned long l;
 486         int err_num;
 487
 488         if (!BIO_sock_init()) return(INVALID_SOCKET);
 489
 490         if ((str=BUF_strdup(host)) == NULL) return(INVALID_SOCKET);
 491
 492         h=p=NULL;
 493         h=str;
 494         for (e=str; *e; e++)
 495                 {
 496                 if (*e == ':')
 497                         {
 498                         p= &(e[1]);
 499                         *e='\0';
 500                         }
 501                 else if (*e == '/')
 502                         {
 503                         *e='\0';
 504                         break;
 505                         }
 506                 }
 507
 508         if (p == NULL)
 509                 {
 510                 p=h;
 511                 h="*";
 512                 }
 513
 514         if (!BIO_get_port(p,&port)) return(INVALID_SOCKET);
 515
 516         memset((char *)&server,0,sizeof(server));
 517         server.sin_family=AF_INET;
 518         server.sin_port=htons(port);
 519
 520         if (strcmp(h,"*") == 0)
 521                 server.sin_addr.s_addr=INADDR_ANY;
 522         else
 523                 {
 524                 if (!BIO_get_host_ip(h,&(ip[0]))) return(INVALID_SOCKET);
 525                 l=(unsigned long)
 526                         ((unsigned long)ip[0]<<24L)|
 527                         ((unsigned long)ip[1]<<16L)|
 528                         ((unsigned long)ip[2]<< 8L)|
 529                         ((unsigned long)ip[3]);
 530                 server.sin_addr.s_addr=htonl(l);
 531                 }
 532
 533 again:
 534         s=socket(AF_INET,SOCK_STREAM,SOCKET_PROTOCOL);
 535         if (s == INVALID_SOCKET)
 536                 {
 537                 SYSerr(SYS_F_SOCKET,get_last_socket_error());
 538                 ERR_add_error_data(3,"port='",host,"'");
 539                 BIOerr(BIO_F_BIO_GET_ACCEPT_SOCKET,BIO_R_UNABLE_TO_CREATE_SOCKET);
 540                 goto err;
 541                 }
 542
 543 #ifdef SO_REUSEADDR
 544         if (bind_mode == BIO_BIND_REUSEADDR)
 545                 {
 546                 int i=1;
 547
 548                 ret=setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&i,sizeof(i));
 549                 bind_mode=BIO_BIND_NORMAL;
 550                 }
 551 #endif
 552         if (bind(s,(struct sockaddr *)&server,sizeof(server)) == -1)
 553                 {
 554 #ifdef SO_REUSEADDR
 555                 err_num=get_last_socket_error();
 556                 if ((bind_mode == BIO_BIND_REUSEADDR_IF_UNUSED) &&
 557                         (err_num == EADDRINUSE))
 558                         {
 559                         memcpy((char *)&client,(char *)&server,sizeof(server));
 560                         if (strcmp(h,"*") == 0)
 561                                 client.sin_addr.s_addr=htonl(0x7F000001);
 562                         cs=socket(AF_INET,SOCK_STREAM,SOCKET_PROTOCOL);
 563                         if (cs != INVALID_SOCKET)
 564                                 {
 565                                 int ii;
 566                                 ii=connect(cs,(struct sockaddr *)&client,
 567                                         sizeof(client));
 568                                 closesocket(cs);
 569                                 if (ii == INVALID_SOCKET)
 570                                         {
 571                                         bind_mode=BIO_BIND_REUSEADDR;
 572                                         closesocket(s);
 573                                         goto again;
 574                                         }
 575                                 /* else error */
 576                                 }
 577                         /* else error */
 578                         }
 579 #endif
 580                 SYSerr(SYS_F_BIND,err_num);
 581                 ERR_add_error_data(3,"port='",host,"'");
 582                 BIOerr(BIO_F_BIO_GET_ACCEPT_SOCKET,BIO_R_UNABLE_TO_BIND_SOCKET);
 583                 goto err;
 584                 }
 585         if (listen(s,MAX_LISTEN) == -1)
 586                 {
 587                 SYSerr(SYS_F_BIND,get_last_socket_error());
 588                 ERR_add_error_data(3,"port='",host,"'");
 589                 BIOerr(BIO_F_BIO_GET_ACCEPT_SOCKET,BIO_R_UNABLE_TO_LISTEN_SOCKET);
 590                 goto err;
 591                 }
 592         ret=1;
 593 err:
 594         if (str != NULL) Free(str);
 595         if ((ret == 0) && (s != INVALID_SOCKET))
 596                 {
 597                 closesocket(s);
 598                 s= INVALID_SOCKET;
 599                 }
 600         return(s);
 601         }
 602
 603 int BIO_accept(int sock, char **addr)
 604         {
 605         int ret=INVALID_SOCKET;
 606         static struct sockaddr_in from;
 607         unsigned long l;
 608         unsigned short port;
 609         int len;
 610         char *p;
 611
 612         memset((char *)&from,0,sizeof(from));
 613         len=sizeof(from);
 614         /* Note: under VMS with SOCKETSHR the fourth parameter is currently
 615          * of type (int *) whereas under other systems it is (void *) if
 616          * you don't have a cast it will choke the compiler: if you do
 617          * have a cast then you can either go for (int *) or (void *).
 618          */
 619         ret=accept(sock,(struct sockaddr *)&from,(void *)&len);
 620         if (ret == INVALID_SOCKET)
 621                 {
 622                 SYSerr(SYS_F_ACCEPT,get_last_socket_error());
 623                 BIOerr(BIO_F_BIO_ACCEPT,BIO_R_ACCEPT_ERROR);
 624                 goto end;
 625                 }
 626
 627         if (addr == NULL) goto end;
 628
 629         l=ntohl(from.sin_addr.s_addr);
 630         port=ntohs(from.sin_port);
 631         if (*addr == NULL)
 632                 {
 633                 if ((p=Malloc(24)) == NULL)
 634                         {
 635                         BIOerr(BIO_F_BIO_ACCEPT,ERR_R_MALLOC_FAILURE);
 636                         goto end;
 637                         }
 638                 *addr=p;
 639                 }
 640         sprintf(*addr,"%d.%d.%d.%d:%d",
 641                 (unsigned char)(l>>24L)&0xff,
 642                 (unsigned char)(l>>16L)&0xff,
 643                 (unsigned char)(l>> 8L)&0xff,
 644                 (unsigned char)(l     )&0xff,
 645                 port);
 646 end:
 647         return(ret);
 648         }
 649
 650 int BIO_set_tcp_ndelay(int s, int on)
 651         {
 652         int ret=0;
 653 #if defined(TCP_NODELAY) && (defined(IPPROTO_TCP) || defined(SOL_TCP))
 654         int opt;
 655
 656 #ifdef SOL_TCP
 657         opt=SOL_TCP;
 658 #else
 659 #ifdef IPPROTO_TCP
 660         opt=IPPROTO_TCP;
 661 #endif
 662 #endif
 663
 664         ret=setsockopt(s,opt,TCP_NODELAY,(char *)&on,sizeof(on));
 665 #endif
 666         return(ret == 0);
 667         }
 668 #endif
 669
 670 int BIO_socket_nbio(int s, int mode)
 671         {
 672         int ret= -1;
 673         unsigned long l;
 674
 675         l=mode;
 676 #ifdef FIONBIO
 677         ret=BIO_socket_ioctl(s,FIONBIO,&l);
 678 #endif
 679         return(ret == 0);
 680         }