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))
86 static int wsa_init_done=0;
87 #endif
88
89 #if 0
90 static unsigned long BIO_ghbn_hits=0L;
91 static unsigned long BIO_ghbn_miss=0L;
92
93 #define GHBN_NUM 4
94 static 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
102 static int get_ip(const char *str,unsigned char *ip);
103 #if 0
104 static void ghbn_free(struct hostent *a);
105 static struct hostent *ghbn_dup(struct hostent *a);
106 #endif
BIO_get_host_ip(const char * str,unsigned char * ip)107 int 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
BIO_get_port(const char * str,unsigned short * port_ptr)162 int 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
BIO_sock_error(int sock)220 int 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
239 long 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
279 static 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 {
324 err:
325 if (ret != NULL)
326 ghbn_free(ret);
327 ret=NULL;
328 }
329 MemCheck_on();
330 return(ret);
331 }
332
333 static 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
BIO_gethostbyname(const char * name)358 struct 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 }
441 end:
442 # if 0
443 CRYPTO_w_unlock(CRYPTO_LOCK_GETHOSTBYNAME);
444 # endif
445 return(ret);
446 #endif
447 }
448
449
BIO_sock_init(void)450 int 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
BIO_sock_cleanup(void)507 void 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
BIO_socket_ioctl(int fd,long type,void * arg)529 int 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 :-( */
get_ip(const char * str,unsigned char ip[4])546 static 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
BIO_get_accept_socket(char * host,int bind_mode)581 int 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
638 again:
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;
698 err:
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
BIO_accept(int sock,char ** addr)708 int 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);
752 end:
753 return(ret);
754 }
755
BIO_set_tcp_ndelay(int s,int on)756 int 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
BIO_socket_nbio(int s,int mode)776 int 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