b_sock.c revision bdfb8ad83da0647e9b9a32792598e8ce7ba3ef4d
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#if defined(NETWARE_CLIB) 68#include <sys/ioctl.h> 69NETDB_DEFINE_CONTEXT 70#endif 71#endif 72 73#ifndef OPENSSL_NO_SOCK 74 75#ifdef OPENSSL_SYS_WIN16 76#define SOCKET_PROTOCOL 0 /* more microsoft stupidity */ 77#else 78#define SOCKET_PROTOCOL IPPROTO_TCP 79#endif 80 81#ifdef SO_MAXCONN 82#define MAX_LISTEN SO_MAXCONN 83#elif defined(SOMAXCONN) 84#define MAX_LISTEN SOMAXCONN 85#else 86#define MAX_LISTEN 32 87#endif 88 89#if defined(OPENSSL_SYS_WINDOWS) || (defined(OPENSSL_SYS_NETWARE) && !defined(NETWARE_BSDSOCK)) 90static int wsa_init_done=0; 91#endif 92 93#if 0 94static unsigned long BIO_ghbn_hits=0L; 95static unsigned long BIO_ghbn_miss=0L; 96 97#define GHBN_NUM 4 98static struct ghbn_cache_st 99 { 100 char name[129]; 101 struct hostent *ent; 102 unsigned long order; 103 } ghbn_cache[GHBN_NUM]; 104#endif 105 106static int get_ip(const char *str,unsigned char *ip); 107#if 0 108static void ghbn_free(struct hostent *a); 109static struct hostent *ghbn_dup(struct hostent *a); 110#endif 111int BIO_get_host_ip(const char *str, unsigned char *ip) 112 { 113 int i; 114 int err = 1; 115 int locked = 0; 116 struct hostent *he; 117 118 i=get_ip(str,ip); 119 if (i < 0) 120 { 121 BIOerr(BIO_F_BIO_GET_HOST_IP,BIO_R_INVALID_IP_ADDRESS); 122 goto err; 123 } 124 125 /* At this point, we have something that is most probably correct 126 in some way, so let's init the socket. */ 127 if (BIO_sock_init() != 1) 128 return 0; /* don't generate another error code here */ 129 130 /* If the string actually contained an IP address, we need not do 131 anything more */ 132 if (i > 0) return(1); 133 134 /* do a gethostbyname */ 135 CRYPTO_w_lock(CRYPTO_LOCK_GETHOSTBYNAME); 136 locked = 1; 137 he=BIO_gethostbyname(str); 138 if (he == NULL) 139 { 140 BIOerr(BIO_F_BIO_GET_HOST_IP,BIO_R_BAD_HOSTNAME_LOOKUP); 141 goto err; 142 } 143 144 /* cast to short because of win16 winsock definition */ 145 if ((short)he->h_addrtype != AF_INET) 146 { 147 BIOerr(BIO_F_BIO_GET_HOST_IP,BIO_R_GETHOSTBYNAME_ADDR_IS_NOT_AF_INET); 148 goto err; 149 } 150 for (i=0; i<4; i++) 151 ip[i]=he->h_addr_list[0][i]; 152 err = 0; 153 154 err: 155 if (locked) 156 CRYPTO_w_unlock(CRYPTO_LOCK_GETHOSTBYNAME); 157 if (err) 158 { 159 ERR_add_error_data(2,"host=",str); 160 return 0; 161 } 162 else 163 return 1; 164 } 165 166int BIO_get_port(const char *str, unsigned short *port_ptr) 167 { 168 int i; 169 struct servent *s; 170 171 if (str == NULL) 172 { 173 BIOerr(BIO_F_BIO_GET_PORT,BIO_R_NO_PORT_DEFINED); 174 return(0); 175 } 176 i=atoi(str); 177 if (i != 0) 178 *port_ptr=(unsigned short)i; 179 else 180 { 181 CRYPTO_w_lock(CRYPTO_LOCK_GETSERVBYNAME); 182 /* Note: under VMS with SOCKETSHR, it seems like the first 183 * parameter is 'char *', instead of 'const char *' 184 */ 185#ifndef CONST_STRICT 186 s=getservbyname((char *)str,"tcp"); 187#else 188 s=getservbyname(str,"tcp"); 189#endif 190 if(s != NULL) 191 *port_ptr=ntohs((unsigned short)s->s_port); 192 CRYPTO_w_unlock(CRYPTO_LOCK_GETSERVBYNAME); 193 if(s == NULL) 194 { 195 if (strcmp(str,"http") == 0) 196 *port_ptr=80; 197 else if (strcmp(str,"telnet") == 0) 198 *port_ptr=23; 199 else if (strcmp(str,"socks") == 0) 200 *port_ptr=1080; 201 else if (strcmp(str,"https") == 0) 202 *port_ptr=443; 203 else if (strcmp(str,"ssl") == 0) 204 *port_ptr=443; 205 else if (strcmp(str,"ftp") == 0) 206 *port_ptr=21; 207 else if (strcmp(str,"gopher") == 0) 208 *port_ptr=70; 209#if 0 210 else if (strcmp(str,"wais") == 0) 211 *port_ptr=21; 212#endif 213 else 214 { 215 SYSerr(SYS_F_GETSERVBYNAME,get_last_socket_error()); 216 ERR_add_error_data(3,"service='",str,"'"); 217 return(0); 218 } 219 } 220 } 221 return(1); 222 } 223 224int BIO_sock_error(int sock) 225 { 226 int j,i; 227 int size; 228 229 size=sizeof(int); 230 /* Note: under Windows the third parameter is of type (char *) 231 * whereas under other systems it is (void *) if you don't have 232 * a cast it will choke the compiler: if you do have a cast then 233 * you can either go for (char *) or (void *). 234 */ 235 i=getsockopt(sock,SOL_SOCKET,SO_ERROR,(void *)&j,(void *)&size); 236 if (i < 0) 237 return(1); 238 else 239 return(j); 240 } 241 242#if 0 243long BIO_ghbn_ctrl(int cmd, int iarg, char *parg) 244 { 245 int i; 246 char **p; 247 248 switch (cmd) 249 { 250 case BIO_GHBN_CTRL_HITS: 251 return(BIO_ghbn_hits); 252 /* break; */ 253 case BIO_GHBN_CTRL_MISSES: 254 return(BIO_ghbn_miss); 255 /* break; */ 256 case BIO_GHBN_CTRL_CACHE_SIZE: 257 return(GHBN_NUM); 258 /* break; */ 259 case BIO_GHBN_CTRL_GET_ENTRY: 260 if ((iarg >= 0) && (iarg <GHBN_NUM) && 261 (ghbn_cache[iarg].order > 0)) 262 { 263 p=(char **)parg; 264 if (p == NULL) return(0); 265 *p=ghbn_cache[iarg].name; 266 ghbn_cache[iarg].name[128]='\0'; 267 return(1); 268 } 269 return(0); 270 /* break; */ 271 case BIO_GHBN_CTRL_FLUSH: 272 for (i=0; i<GHBN_NUM; i++) 273 ghbn_cache[i].order=0; 274 break; 275 default: 276 return(0); 277 } 278 return(1); 279 } 280#endif 281 282#if 0 283static struct hostent *ghbn_dup(struct hostent *a) 284 { 285 struct hostent *ret; 286 int i,j; 287 288 MemCheck_off(); 289 ret=(struct hostent *)OPENSSL_malloc(sizeof(struct hostent)); 290 if (ret == NULL) return(NULL); 291 memset(ret,0,sizeof(struct hostent)); 292 293 for (i=0; a->h_aliases[i] != NULL; i++) 294 ; 295 i++; 296 ret->h_aliases = (char **)OPENSSL_malloc(i*sizeof(char *)); 297 if (ret->h_aliases == NULL) 298 goto err; 299 memset(ret->h_aliases, 0, i*sizeof(char *)); 300 301 for (i=0; a->h_addr_list[i] != NULL; i++) 302 ; 303 i++; 304 ret->h_addr_list=(char **)OPENSSL_malloc(i*sizeof(char *)); 305 if (ret->h_addr_list == NULL) 306 goto err; 307 memset(ret->h_addr_list, 0, i*sizeof(char *)); 308 309 j=strlen(a->h_name)+1; 310 if ((ret->h_name=OPENSSL_malloc(j)) == NULL) goto err; 311 memcpy((char *)ret->h_name,a->h_name,j); 312 for (i=0; a->h_aliases[i] != NULL; i++) 313 { 314 j=strlen(a->h_aliases[i])+1; 315 if ((ret->h_aliases[i]=OPENSSL_malloc(j)) == NULL) goto err; 316 memcpy(ret->h_aliases[i],a->h_aliases[i],j); 317 } 318 ret->h_length=a->h_length; 319 ret->h_addrtype=a->h_addrtype; 320 for (i=0; a->h_addr_list[i] != NULL; i++) 321 { 322 if ((ret->h_addr_list[i]=OPENSSL_malloc(a->h_length)) == NULL) 323 goto err; 324 memcpy(ret->h_addr_list[i],a->h_addr_list[i],a->h_length); 325 } 326 if (0) 327 { 328err: 329 if (ret != NULL) 330 ghbn_free(ret); 331 ret=NULL; 332 } 333 MemCheck_on(); 334 return(ret); 335 } 336 337static void ghbn_free(struct hostent *a) 338 { 339 int i; 340 341 if(a == NULL) 342 return; 343 344 if (a->h_aliases != NULL) 345 { 346 for (i=0; a->h_aliases[i] != NULL; i++) 347 OPENSSL_free(a->h_aliases[i]); 348 OPENSSL_free(a->h_aliases); 349 } 350 if (a->h_addr_list != NULL) 351 { 352 for (i=0; a->h_addr_list[i] != NULL; i++) 353 OPENSSL_free(a->h_addr_list[i]); 354 OPENSSL_free(a->h_addr_list); 355 } 356 if (a->h_name != NULL) OPENSSL_free(a->h_name); 357 OPENSSL_free(a); 358 } 359 360#endif 361 362struct hostent *BIO_gethostbyname(const char *name) 363 { 364#if 1 365 /* Caching gethostbyname() results forever is wrong, 366 * so we have to let the true gethostbyname() worry about this */ 367#if (defined(NETWARE_BSDSOCK) && !defined(__NOVELL_LIBC__)) 368 return gethostbyname((char*)name); 369#else 370 return gethostbyname(name); 371#endif 372#else 373 struct hostent *ret; 374 int i,lowi=0,j; 375 unsigned long low= (unsigned long)-1; 376 377 378# if 0 379 /* It doesn't make sense to use locking here: The function interface 380 * is not thread-safe, because threads can never be sure when 381 * some other thread destroys the data they were given a pointer to. 382 */ 383 CRYPTO_w_lock(CRYPTO_LOCK_GETHOSTBYNAME); 384# endif 385 j=strlen(name); 386 if (j < 128) 387 { 388 for (i=0; i<GHBN_NUM; i++) 389 { 390 if (low > ghbn_cache[i].order) 391 { 392 low=ghbn_cache[i].order; 393 lowi=i; 394 } 395 if (ghbn_cache[i].order > 0) 396 { 397 if (strncmp(name,ghbn_cache[i].name,128) == 0) 398 break; 399 } 400 } 401 } 402 else 403 i=GHBN_NUM; 404 405 if (i == GHBN_NUM) /* no hit*/ 406 { 407 BIO_ghbn_miss++; 408 /* Note: under VMS with SOCKETSHR, it seems like the first 409 * parameter is 'char *', instead of 'const char *' 410 */ 411# ifndef CONST_STRICT 412 ret=gethostbyname((char *)name); 413# else 414 ret=gethostbyname(name); 415# endif 416 417 if (ret == NULL) 418 goto end; 419 if (j > 128) /* too big to cache */ 420 { 421# if 0 422 /* If we were trying to make this function thread-safe (which 423 * is bound to fail), we'd have to give up in this case 424 * (or allocate more memory). */ 425 ret = NULL; 426# endif 427 goto end; 428 } 429 430 /* else add to cache */ 431 if (ghbn_cache[lowi].ent != NULL) 432 ghbn_free(ghbn_cache[lowi].ent); /* XXX not thread-safe */ 433 ghbn_cache[lowi].name[0] = '\0'; 434 435 if((ret=ghbn_cache[lowi].ent=ghbn_dup(ret)) == NULL) 436 { 437 BIOerr(BIO_F_BIO_GETHOSTBYNAME,ERR_R_MALLOC_FAILURE); 438 goto end; 439 } 440 strncpy(ghbn_cache[lowi].name,name,128); 441 ghbn_cache[lowi].order=BIO_ghbn_miss+BIO_ghbn_hits; 442 } 443 else 444 { 445 BIO_ghbn_hits++; 446 ret= ghbn_cache[i].ent; 447 ghbn_cache[i].order=BIO_ghbn_miss+BIO_ghbn_hits; 448 } 449end: 450# if 0 451 CRYPTO_w_unlock(CRYPTO_LOCK_GETHOSTBYNAME); 452# endif 453 return(ret); 454#endif 455 } 456 457 458int BIO_sock_init(void) 459 { 460#ifdef OPENSSL_SYS_WINDOWS 461 static struct WSAData wsa_state; 462 463 if (!wsa_init_done) 464 { 465 int err; 466 467 wsa_init_done=1; 468 memset(&wsa_state,0,sizeof(wsa_state)); 469 if (WSAStartup(0x0101,&wsa_state)!=0) 470 { 471 err=WSAGetLastError(); 472 SYSerr(SYS_F_WSASTARTUP,err); 473 BIOerr(BIO_F_BIO_SOCK_INIT,BIO_R_WSASTARTUP); 474 return(-1); 475 } 476 } 477#endif /* OPENSSL_SYS_WINDOWS */ 478#ifdef WATT32 479 extern int _watt_do_exit; 480 _watt_do_exit = 0; /* don't make sock_init() call exit() */ 481 if (sock_init()) 482 return (-1); 483#endif 484 485#if defined(OPENSSL_SYS_NETWARE) && !defined(NETWARE_BSDSOCK) 486 WORD wVerReq; 487 WSADATA wsaData; 488 int err; 489 490 if (!wsa_init_done) 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(); /* Winsock 1.1 specific */ 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