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#include <stdio.h> 60#include <stdlib.h> 61#include <errno.h> 62#define USE_SOCKETS 63#include "cryptlib.h" 64#include <openssl/bio.h> 65#if defined(OPENSSL_SYS_NETWARE) && defined(NETWARE_BSDSOCK) 66#include "netdb.h" 67#endif 68 69#ifndef OPENSSL_NO_SOCK 70 71#ifdef OPENSSL_SYS_WIN16 72#define SOCKET_PROTOCOL 0 /* more microsoft stupidity */ 73#else 74#define SOCKET_PROTOCOL IPPROTO_TCP 75#endif 76 77#ifdef SO_MAXCONN 78#define MAX_LISTEN SO_MAXCONN 79#elif defined(SOMAXCONN) 80#define MAX_LISTEN SOMAXCONN 81#else 82#define MAX_LISTEN 32 83#endif 84 85#if defined(OPENSSL_SYS_WINDOWS) || (defined(OPENSSL_SYS_NETWARE) && !defined(NETWARE_BSDSOCK)) 86static int wsa_init_done=0; 87#endif 88 89#if 0 90static unsigned long BIO_ghbn_hits=0L; 91static unsigned long BIO_ghbn_miss=0L; 92 93#define GHBN_NUM 4 94static struct ghbn_cache_st 95 { 96 char name[129]; 97 struct hostent *ent; 98 unsigned long order; 99 } ghbn_cache[GHBN_NUM]; 100#endif 101 102static int get_ip(const char *str,unsigned char *ip); 103#if 0 104static void ghbn_free(struct hostent *a); 105static struct hostent *ghbn_dup(struct hostent *a); 106#endif 107int BIO_get_host_ip(const char *str, unsigned char *ip) 108 { 109 int i; 110 int err = 1; 111 int locked = 0; 112 struct hostent *he; 113 114 i=get_ip(str,ip); 115 if (i < 0) 116 { 117 BIOerr(BIO_F_BIO_GET_HOST_IP,BIO_R_INVALID_IP_ADDRESS); 118 goto err; 119 } 120 121 /* At this point, we have something that is most probably correct 122 in some way, so let's init the socket. */ 123 if (BIO_sock_init() != 1) 124 return 0; /* don't generate another error code here */ 125 126 /* If the string actually contained an IP address, we need not do 127 anything more */ 128 if (i > 0) return(1); 129 130 /* do a gethostbyname */ 131 CRYPTO_w_lock(CRYPTO_LOCK_GETHOSTBYNAME); 132 locked = 1; 133 he=BIO_gethostbyname(str); 134 if (he == NULL) 135 { 136 BIOerr(BIO_F_BIO_GET_HOST_IP,BIO_R_BAD_HOSTNAME_LOOKUP); 137 goto err; 138 } 139 140 /* cast to short because of win16 winsock definition */ 141 if ((short)he->h_addrtype != AF_INET) 142 { 143 BIOerr(BIO_F_BIO_GET_HOST_IP,BIO_R_GETHOSTBYNAME_ADDR_IS_NOT_AF_INET); 144 goto err; 145 } 146 for (i=0; i<4; i++) 147 ip[i]=he->h_addr_list[0][i]; 148 err = 0; 149 150 err: 151 if (locked) 152 CRYPTO_w_unlock(CRYPTO_LOCK_GETHOSTBYNAME); 153 if (err) 154 { 155 ERR_add_error_data(2,"host=",str); 156 return 0; 157 } 158 else 159 return 1; 160 } 161 162int BIO_get_port(const char *str, unsigned short *port_ptr) 163 { 164 int i; 165 struct servent *s; 166 167 if (str == NULL) 168 { 169 BIOerr(BIO_F_BIO_GET_PORT,BIO_R_NO_PORT_DEFINED); 170 return(0); 171 } 172 i=atoi(str); 173 if (i != 0) 174 *port_ptr=(unsigned short)i; 175 else 176 { 177 CRYPTO_w_lock(CRYPTO_LOCK_GETSERVBYNAME); 178 /* Note: under VMS with SOCKETSHR, it seems like the first 179 * parameter is 'char *', instead of 'const char *' 180 */ 181 s=getservbyname( 182#ifndef CONST_STRICT 183 (char *) 184#endif 185 str,"tcp"); 186 if(s != NULL) 187 *port_ptr=ntohs((unsigned short)s->s_port); 188 CRYPTO_w_unlock(CRYPTO_LOCK_GETSERVBYNAME); 189 if(s == NULL) 190 { 191 if (strcmp(str,"http") == 0) 192 *port_ptr=80; 193 else if (strcmp(str,"telnet") == 0) 194 *port_ptr=23; 195 else if (strcmp(str,"socks") == 0) 196 *port_ptr=1080; 197 else if (strcmp(str,"https") == 0) 198 *port_ptr=443; 199 else if (strcmp(str,"ssl") == 0) 200 *port_ptr=443; 201 else if (strcmp(str,"ftp") == 0) 202 *port_ptr=21; 203 else if (strcmp(str,"gopher") == 0) 204 *port_ptr=70; 205#if 0 206 else if (strcmp(str,"wais") == 0) 207 *port_ptr=21; 208#endif 209 else 210 { 211 SYSerr(SYS_F_GETSERVBYNAME,get_last_socket_error()); 212 ERR_add_error_data(3,"service='",str,"'"); 213 return(0); 214 } 215 } 216 } 217 return(1); 218 } 219 220int BIO_sock_error(int sock) 221 { 222 int j,i; 223 int size; 224 225 size=sizeof(int); 226 /* Note: under Windows the third parameter is of type (char *) 227 * whereas under other systems it is (void *) if you don't have 228 * a cast it will choke the compiler: if you do have a cast then 229 * you can either go for (char *) or (void *). 230 */ 231 i=getsockopt(sock,SOL_SOCKET,SO_ERROR,(void *)&j,(void *)&size); 232 if (i < 0) 233 return(1); 234 else 235 return(j); 236 } 237 238#if 0 239long BIO_ghbn_ctrl(int cmd, int iarg, char *parg) 240 { 241 int i; 242 char **p; 243 244 switch (cmd) 245 { 246 case BIO_GHBN_CTRL_HITS: 247 return(BIO_ghbn_hits); 248 /* break; */ 249 case BIO_GHBN_CTRL_MISSES: 250 return(BIO_ghbn_miss); 251 /* break; */ 252 case BIO_GHBN_CTRL_CACHE_SIZE: 253 return(GHBN_NUM); 254 /* break; */ 255 case BIO_GHBN_CTRL_GET_ENTRY: 256 if ((iarg >= 0) && (iarg <GHBN_NUM) && 257 (ghbn_cache[iarg].order > 0)) 258 { 259 p=(char **)parg; 260 if (p == NULL) return(0); 261 *p=ghbn_cache[iarg].name; 262 ghbn_cache[iarg].name[128]='\0'; 263 return(1); 264 } 265 return(0); 266 /* break; */ 267 case BIO_GHBN_CTRL_FLUSH: 268 for (i=0; i<GHBN_NUM; i++) 269 ghbn_cache[i].order=0; 270 break; 271 default: 272 return(0); 273 } 274 return(1); 275 } 276#endif 277 278#if 0 279static struct hostent *ghbn_dup(struct hostent *a) 280 { 281 struct hostent *ret; 282 int i,j; 283 284 MemCheck_off(); 285 ret=(struct hostent *)OPENSSL_malloc(sizeof(struct hostent)); 286 if (ret == NULL) return(NULL); 287 memset(ret,0,sizeof(struct hostent)); 288 289 for (i=0; a->h_aliases[i] != NULL; i++) 290 ; 291 i++; 292 ret->h_aliases = (char **)OPENSSL_malloc(i*sizeof(char *)); 293 if (ret->h_aliases == NULL) 294 goto err; 295 memset(ret->h_aliases, 0, i*sizeof(char *)); 296 297 for (i=0; a->h_addr_list[i] != NULL; i++) 298 ; 299 i++; 300 ret->h_addr_list=(char **)OPENSSL_malloc(i*sizeof(char *)); 301 if (ret->h_addr_list == NULL) 302 goto err; 303 memset(ret->h_addr_list, 0, i*sizeof(char *)); 304 305 j=strlen(a->h_name)+1; 306 if ((ret->h_name=OPENSSL_malloc(j)) == NULL) goto err; 307 memcpy((char *)ret->h_name,a->h_name,j); 308 for (i=0; a->h_aliases[i] != NULL; i++) 309 { 310 j=strlen(a->h_aliases[i])+1; 311 if ((ret->h_aliases[i]=OPENSSL_malloc(j)) == NULL) goto err; 312 memcpy(ret->h_aliases[i],a->h_aliases[i],j); 313 } 314 ret->h_length=a->h_length; 315 ret->h_addrtype=a->h_addrtype; 316 for (i=0; a->h_addr_list[i] != NULL; i++) 317 { 318 if ((ret->h_addr_list[i]=OPENSSL_malloc(a->h_length)) == NULL) 319 goto err; 320 memcpy(ret->h_addr_list[i],a->h_addr_list[i],a->h_length); 321 } 322 if (0) 323 { 324err: 325 if (ret != NULL) 326 ghbn_free(ret); 327 ret=NULL; 328 } 329 MemCheck_on(); 330 return(ret); 331 } 332 333static void ghbn_free(struct hostent *a) 334 { 335 int i; 336 337 if(a == NULL) 338 return; 339 340 if (a->h_aliases != NULL) 341 { 342 for (i=0; a->h_aliases[i] != NULL; i++) 343 OPENSSL_free(a->h_aliases[i]); 344 OPENSSL_free(a->h_aliases); 345 } 346 if (a->h_addr_list != NULL) 347 { 348 for (i=0; a->h_addr_list[i] != NULL; i++) 349 OPENSSL_free(a->h_addr_list[i]); 350 OPENSSL_free(a->h_addr_list); 351 } 352 if (a->h_name != NULL) OPENSSL_free(a->h_name); 353 OPENSSL_free(a); 354 } 355 356#endif 357 358struct hostent *BIO_gethostbyname(const char *name) 359 { 360#if 1 361 /* Caching gethostbyname() results forever is wrong, 362 * so we have to let the true gethostbyname() worry about this */ 363 return gethostbyname(name); 364#else 365 struct hostent *ret; 366 int i,lowi=0,j; 367 unsigned long low= (unsigned long)-1; 368 369 370# if 0 371 /* It doesn't make sense to use locking here: The function interface 372 * is not thread-safe, because threads can never be sure when 373 * some other thread destroys the data they were given a pointer to. 374 */ 375 CRYPTO_w_lock(CRYPTO_LOCK_GETHOSTBYNAME); 376# endif 377 j=strlen(name); 378 if (j < 128) 379 { 380 for (i=0; i<GHBN_NUM; i++) 381 { 382 if (low > ghbn_cache[i].order) 383 { 384 low=ghbn_cache[i].order; 385 lowi=i; 386 } 387 if (ghbn_cache[i].order > 0) 388 { 389 if (strncmp(name,ghbn_cache[i].name,128) == 0) 390 break; 391 } 392 } 393 } 394 else 395 i=GHBN_NUM; 396 397 if (i == GHBN_NUM) /* no hit*/ 398 { 399 BIO_ghbn_miss++; 400 /* Note: under VMS with SOCKETSHR, it seems like the first 401 * parameter is 'char *', instead of 'const char *' 402 */ 403 ret=gethostbyname( 404# ifndef CONST_STRICT 405 (char *) 406# endif 407 name); 408 409 if (ret == NULL) 410 goto end; 411 if (j > 128) /* too big to cache */ 412 { 413# if 0 414 /* If we were trying to make this function thread-safe (which 415 * is bound to fail), we'd have to give up in this case 416 * (or allocate more memory). */ 417 ret = NULL; 418# endif 419 goto end; 420 } 421 422 /* else add to cache */ 423 if (ghbn_cache[lowi].ent != NULL) 424 ghbn_free(ghbn_cache[lowi].ent); /* XXX not thread-safe */ 425 ghbn_cache[lowi].name[0] = '\0'; 426 427 if((ret=ghbn_cache[lowi].ent=ghbn_dup(ret)) == NULL) 428 { 429 BIOerr(BIO_F_BIO_GETHOSTBYNAME,ERR_R_MALLOC_FAILURE); 430 goto end; 431 } 432 strncpy(ghbn_cache[lowi].name,name,128); 433 ghbn_cache[lowi].order=BIO_ghbn_miss+BIO_ghbn_hits; 434 } 435 else 436 { 437 BIO_ghbn_hits++; 438 ret= ghbn_cache[i].ent; 439 ghbn_cache[i].order=BIO_ghbn_miss+BIO_ghbn_hits; 440 } 441end: 442# if 0 443 CRYPTO_w_unlock(CRYPTO_LOCK_GETHOSTBYNAME); 444# endif 445 return(ret); 446#endif 447 } 448 449 450int BIO_sock_init(void) 451 { 452#ifdef OPENSSL_SYS_WINDOWS 453 static struct WSAData wsa_state; 454 455 if (!wsa_init_done) 456 { 457 int err; 458 459#ifdef SIGINT 460 signal(SIGINT,(void (*)(int))BIO_sock_cleanup); 461#endif 462 wsa_init_done=1; 463 memset(&wsa_state,0,sizeof(wsa_state)); 464 if (WSAStartup(0x0101,&wsa_state)!=0) 465 { 466 err=WSAGetLastError(); 467 SYSerr(SYS_F_WSASTARTUP,err); 468 BIOerr(BIO_F_BIO_SOCK_INIT,BIO_R_WSASTARTUP); 469 return(-1); 470 } 471 } 472#endif /* OPENSSL_SYS_WINDOWS */ 473#ifdef WATT32 474 extern int _watt_do_exit; 475 _watt_do_exit = 0; /* don't make sock_init() call exit() */ 476 if (sock_init()) 477 return (-1); 478#endif 479 480#if defined(OPENSSL_SYS_NETWARE) && !defined(NETWARE_BSDSOCK) 481 WORD wVerReq; 482 WSADATA wsaData; 483 int err; 484 485 if (!wsa_init_done) 486 { 487 488# ifdef SIGINT 489 signal(SIGINT,(void (*)(int))BIO_sock_cleanup); 490# endif 491 492 wsa_init_done=1; 493 wVerReq = MAKEWORD( 2, 0 ); 494 err = WSAStartup(wVerReq,&wsaData); 495 if (err != 0) 496 { 497 SYSerr(SYS_F_WSASTARTUP,err); 498 BIOerr(BIO_F_BIO_SOCK_INIT,BIO_R_WSASTARTUP); 499 return(-1); 500 } 501 } 502#endif 503 504 return(1); 505 } 506 507void BIO_sock_cleanup(void) 508 { 509#ifdef OPENSSL_SYS_WINDOWS 510 if (wsa_init_done) 511 { 512 wsa_init_done=0; 513#ifndef OPENSSL_SYS_WINCE 514 WSACancelBlockingCall(); 515#endif 516 WSACleanup(); 517 } 518#elif defined(OPENSSL_SYS_NETWARE) && !defined(NETWARE_BSDSOCK) 519 if (wsa_init_done) 520 { 521 wsa_init_done=0; 522 WSACleanup(); 523 } 524#endif 525 } 526 527#if !defined(OPENSSL_SYS_VMS) || __VMS_VER >= 70000000 528 529int BIO_socket_ioctl(int fd, long type, void *arg) 530 { 531 int i; 532 533#ifdef __DJGPP__ 534 i=ioctlsocket(fd,type,(char *)arg); 535#else 536 i=ioctlsocket(fd,type,arg); 537#endif /* __DJGPP__ */ 538 if (i < 0) 539 SYSerr(SYS_F_IOCTLSOCKET,get_last_socket_error()); 540 return(i); 541 } 542#endif /* __VMS_VER */ 543 544/* The reason I have implemented this instead of using sscanf is because 545 * Visual C 1.52c gives an unresolved external when linking a DLL :-( */ 546static int get_ip(const char *str, unsigned char ip[4]) 547 { 548 unsigned int tmp[4]; 549 int num=0,c,ok=0; 550 551 tmp[0]=tmp[1]=tmp[2]=tmp[3]=0; 552 553 for (;;) 554 { 555 c= *(str++); 556 if ((c >= '0') && (c <= '9')) 557 { 558 ok=1; 559 tmp[num]=tmp[num]*10+c-'0'; 560 if (tmp[num] > 255) return(0); 561 } 562 else if (c == '.') 563 { 564 if (!ok) return(-1); 565 if (num == 3) return(0); 566 num++; 567 ok=0; 568 } 569 else if (c == '\0' && (num == 3) && ok) 570 break; 571 else 572 return(0); 573 } 574 ip[0]=tmp[0]; 575 ip[1]=tmp[1]; 576 ip[2]=tmp[2]; 577 ip[3]=tmp[3]; 578 return(1); 579 } 580 581int BIO_get_accept_socket(char *host, int bind_mode) 582 { 583 int ret=0; 584 struct sockaddr_in server,client; 585 int s=INVALID_SOCKET,cs; 586 unsigned char ip[4]; 587 unsigned short port; 588 char *str=NULL,*e; 589 const char *h,*p; 590 unsigned long l; 591 int err_num; 592 593 if (BIO_sock_init() != 1) return(INVALID_SOCKET); 594 595 if ((str=BUF_strdup(host)) == NULL) return(INVALID_SOCKET); 596 597 h=p=NULL; 598 h=str; 599 for (e=str; *e; e++) 600 { 601 if (*e == ':') 602 { 603 p= &(e[1]); 604 *e='\0'; 605 } 606 else if (*e == '/') 607 { 608 *e='\0'; 609 break; 610 } 611 } 612 613 if (p == NULL) 614 { 615 p=h; 616 h="*"; 617 } 618 619 if (!BIO_get_port(p,&port)) goto err; 620 621 memset((char *)&server,0,sizeof(server)); 622 server.sin_family=AF_INET; 623 server.sin_port=htons(port); 624 625 if (strcmp(h,"*") == 0) 626 server.sin_addr.s_addr=INADDR_ANY; 627 else 628 { 629 if (!BIO_get_host_ip(h,&(ip[0]))) goto err; 630 l=(unsigned long) 631 ((unsigned long)ip[0]<<24L)| 632 ((unsigned long)ip[1]<<16L)| 633 ((unsigned long)ip[2]<< 8L)| 634 ((unsigned long)ip[3]); 635 server.sin_addr.s_addr=htonl(l); 636 } 637 638again: 639 s=socket(AF_INET,SOCK_STREAM,SOCKET_PROTOCOL); 640 if (s == INVALID_SOCKET) 641 { 642 SYSerr(SYS_F_SOCKET,get_last_socket_error()); 643 ERR_add_error_data(3,"port='",host,"'"); 644 BIOerr(BIO_F_BIO_GET_ACCEPT_SOCKET,BIO_R_UNABLE_TO_CREATE_SOCKET); 645 goto err; 646 } 647 648#ifdef SO_REUSEADDR 649 if (bind_mode == BIO_BIND_REUSEADDR) 650 { 651 int i=1; 652 653 ret=setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&i,sizeof(i)); 654 bind_mode=BIO_BIND_NORMAL; 655 } 656#endif 657 if (bind(s,(struct sockaddr *)&server,sizeof(server)) == -1) 658 { 659#ifdef SO_REUSEADDR 660 err_num=get_last_socket_error(); 661 if ((bind_mode == BIO_BIND_REUSEADDR_IF_UNUSED) && 662 (err_num == EADDRINUSE)) 663 { 664 memcpy((char *)&client,(char *)&server,sizeof(server)); 665 if (strcmp(h,"*") == 0) 666 client.sin_addr.s_addr=htonl(0x7F000001); 667 cs=socket(AF_INET,SOCK_STREAM,SOCKET_PROTOCOL); 668 if (cs != INVALID_SOCKET) 669 { 670 int ii; 671 ii=connect(cs,(struct sockaddr *)&client, 672 sizeof(client)); 673 closesocket(cs); 674 if (ii == INVALID_SOCKET) 675 { 676 bind_mode=BIO_BIND_REUSEADDR; 677 closesocket(s); 678 goto again; 679 } 680 /* else error */ 681 } 682 /* else error */ 683 } 684#endif 685 SYSerr(SYS_F_BIND,err_num); 686 ERR_add_error_data(3,"port='",host,"'"); 687 BIOerr(BIO_F_BIO_GET_ACCEPT_SOCKET,BIO_R_UNABLE_TO_BIND_SOCKET); 688 goto err; 689 } 690 if (listen(s,MAX_LISTEN) == -1) 691 { 692 SYSerr(SYS_F_BIND,get_last_socket_error()); 693 ERR_add_error_data(3,"port='",host,"'"); 694 BIOerr(BIO_F_BIO_GET_ACCEPT_SOCKET,BIO_R_UNABLE_TO_LISTEN_SOCKET); 695 goto err; 696 } 697 ret=1; 698err: 699 if (str != NULL) OPENSSL_free(str); 700 if ((ret == 0) && (s != INVALID_SOCKET)) 701 { 702 closesocket(s); 703 s= INVALID_SOCKET; 704 } 705 return(s); 706 } 707 708int BIO_accept(int sock, char **addr) 709 { 710 int ret=INVALID_SOCKET; 711 static struct sockaddr_in from; 712 unsigned long l; 713 unsigned short port; 714 int len; 715 char *p; 716 717 memset((char *)&from,0,sizeof(from)); 718 len=sizeof(from); 719 /* Note: under VMS with SOCKETSHR the fourth parameter is currently 720 * of type (int *) whereas under other systems it is (void *) if 721 * you don't have a cast it will choke the compiler: if you do 722 * have a cast then you can either go for (int *) or (void *). 723 */ 724 ret=accept(sock,(struct sockaddr *)&from,(void *)&len); 725 if (ret == INVALID_SOCKET) 726 { 727 if(BIO_sock_should_retry(ret)) return -2; 728 SYSerr(SYS_F_ACCEPT,get_last_socket_error()); 729 BIOerr(BIO_F_BIO_ACCEPT,BIO_R_ACCEPT_ERROR); 730 goto end; 731 } 732 733 if (addr == NULL) goto end; 734 735 l=ntohl(from.sin_addr.s_addr); 736 port=ntohs(from.sin_port); 737 if (*addr == NULL) 738 { 739 if ((p=OPENSSL_malloc(24)) == NULL) 740 { 741 BIOerr(BIO_F_BIO_ACCEPT,ERR_R_MALLOC_FAILURE); 742 goto end; 743 } 744 *addr=p; 745 } 746 BIO_snprintf(*addr,24,"%d.%d.%d.%d:%d", 747 (unsigned char)(l>>24L)&0xff, 748 (unsigned char)(l>>16L)&0xff, 749 (unsigned char)(l>> 8L)&0xff, 750 (unsigned char)(l )&0xff, 751 port); 752end: 753 return(ret); 754 } 755 756int BIO_set_tcp_ndelay(int s, int on) 757 { 758 int ret=0; 759#if defined(TCP_NODELAY) && (defined(IPPROTO_TCP) || defined(SOL_TCP)) 760 int opt; 761 762#ifdef SOL_TCP 763 opt=SOL_TCP; 764#else 765#ifdef IPPROTO_TCP 766 opt=IPPROTO_TCP; 767#endif 768#endif 769 770 ret=setsockopt(s,opt,TCP_NODELAY,(char *)&on,sizeof(on)); 771#endif 772 return(ret == 0); 773 } 774#endif 775 776int BIO_socket_nbio(int s, int mode) 777 { 778 int ret= -1; 779 int l; 780 781 l=mode; 782#ifdef FIONBIO 783 ret=BIO_socket_ioctl(s,FIONBIO,&l); 784#endif 785 return(ret == 0); 786 } 787