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