1 /* crypto/bio/b_sock.c */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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.
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).
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.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
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)"
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
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.]
68 /* BIOerr(BIO_F_WSASTARTUP,BIO_R_WSASTARTUP ); */
71 #define SOCKET_PROTOCOL 0 /* more microsoft stupidity */
73 #define SOCKET_PROTOCOL IPPROTO_TCP
77 #define MAX_LISTEN SOMAXCONN
78 #elif defined(SO_MAXCONN)
79 #define MAX_LISTEN SO_MAXCONN
85 static int wsa_init_done=0;
88 static unsigned long BIO_ghbn_hits=0L;
89 static unsigned long BIO_ghbn_miss=0L;
92 static struct ghbn_cache_st
97 } ghbn_cache[GHBN_NUM];
100 static int get_ip(const char *str,unsigned char *ip);
101 static void ghbn_free(struct hostent *a);
102 static struct hostent *ghbn_dup(struct hostent *a);
105 static void ghbn_free();
106 static struct hostent *ghbn_dup();
109 int BIO_get_host_ip(const char *str, unsigned char *ip)
115 if (i > 0) return(1);
118 BIOerr(BIO_F_BIO_GET_HOST_IP,BIO_R_INVALID_IP_ADDRESS);
119 ERR_add_error_data(2,"host=",str);
123 { /* do a gethostbyname */
124 if (!BIO_sock_init()) return(0);
126 he=BIO_gethostbyname(str);
129 BIOerr(BIO_F_BIO_GET_HOST_IP,BIO_R_BAD_HOSTNAME_LOOKUP);
130 ERR_add_error_data(2,"host=",str);
134 /* cast to short because of win16 winsock definition */
135 if ((short)he->h_addrtype != AF_INET)
137 BIOerr(BIO_F_BIO_GET_HOST_IP,BIO_R_GETHOSTBYNAME_ADDR_IS_NOT_AF_INET);
138 ERR_add_error_data(2,"host=",str);
142 ip[i]=he->h_addr_list[0][i];
147 int BIO_get_port(const char *str, unsigned short *port_ptr)
154 BIOerr(BIO_F_BIO_GET_PORT,BIO_R_NO_PORT_DEFINED);
159 *port_ptr=(unsigned short)i;
162 s=getservbyname(str,"tcp");
165 if (strcmp(str,"http") == 0)
167 else if (strcmp(str,"telnet") == 0)
169 else if (strcmp(str,"socks") == 0)
171 else if (strcmp(str,"https") == 0)
173 else if (strcmp(str,"ssl") == 0)
175 else if (strcmp(str,"ftp") == 0)
177 else if (strcmp(str,"gopher") == 0)
180 else if (strcmp(str,"wais") == 0)
185 SYSerr(SYS_F_GETSERVBYNAME,get_last_socket_error());
186 ERR_add_error_data(3,"service='",str,"'");
191 *port_ptr=htons((unsigned short)s->s_port);
196 int BIO_sock_error(int sock)
203 i=getsockopt(sock,SOL_SOCKET,SO_ERROR,(char *)&j,&size);
210 long BIO_ghbn_ctrl(int cmd, int iarg, char *parg)
217 case BIO_GHBN_CTRL_HITS:
218 return(BIO_ghbn_hits);
220 case BIO_GHBN_CTRL_MISSES:
221 return(BIO_ghbn_miss);
223 case BIO_GHBN_CTRL_CACHE_SIZE:
226 case BIO_GHBN_CTRL_GET_ENTRY:
227 if ((iarg >= 0) && (iarg <GHBN_NUM) &&
228 (ghbn_cache[iarg].order > 0))
231 if (p == NULL) return(0);
232 *p=ghbn_cache[iarg].name;
233 ghbn_cache[iarg].name[128]='\0';
238 case BIO_GHBN_CTRL_FLUSH:
239 for (i=0; i<GHBN_NUM; i++)
240 ghbn_cache[i].order=0;
248 static struct hostent *ghbn_dup(struct hostent *a)
254 ret=(struct hostent *)Malloc(sizeof(struct hostent));
255 if (ret == NULL) return(NULL);
256 memset(ret,0,sizeof(struct hostent));
258 for (i=0; a->h_aliases[i] != NULL; i++)
261 ret->h_aliases=(char **)Malloc(sizeof(char *)*i);
262 memset(ret->h_aliases,0,sizeof(char *)*i);
263 if (ret == NULL) goto err;
265 for (i=0; a->h_addr_list[i] != NULL; i++)
268 ret->h_addr_list=(char **)Malloc(sizeof(char *)*i);
269 memset(ret->h_addr_list,0,sizeof(char *)*i);
270 if (ret->h_addr_list == NULL) goto err;
272 j=strlen(a->h_name)+1;
273 if ((ret->h_name=Malloc(j)) == NULL) goto err;
274 memcpy((char *)ret->h_name,a->h_name,j+1);
275 for (i=0; a->h_aliases[i] != NULL; i++)
277 j=strlen(a->h_aliases[i])+1;
278 if ((ret->h_aliases[i]=Malloc(j)) == NULL) goto err;
279 memcpy(ret->h_aliases[i],a->h_aliases[i],j+1);
281 ret->h_length=a->h_length;
282 ret->h_addrtype=a->h_addrtype;
283 for (i=0; a->h_addr_list[i] != NULL; i++)
285 if ((ret->h_addr_list[i]=Malloc(a->h_length)) == NULL)
287 memcpy(ret->h_addr_list[i],a->h_addr_list[i],a->h_length);
300 static void ghbn_free(struct hostent *a)
307 if (a->h_aliases != NULL)
309 for (i=0; a->h_aliases[i] != NULL; i++)
310 Free(a->h_aliases[i]);
313 if (a->h_addr_list != NULL)
315 for (i=0; a->h_addr_list[i] != NULL; i++)
316 Free(a->h_addr_list[i]);
317 Free(a->h_addr_list);
319 if (a->h_name != NULL) Free((char *)a->h_name);
323 struct hostent *BIO_gethostbyname(const char *name)
327 unsigned long low= (unsigned long)-1;
329 /* return(gethostbyname(name)); */
331 CRYPTO_w_lock(CRYPTO_LOCK_BIO_GETHOSTBYNAME);
335 for (i=0; i<GHBN_NUM; i++)
337 if (low > ghbn_cache[i].order)
339 low=ghbn_cache[i].order;
342 if (ghbn_cache[i].order > 0)
344 if (strncmp(name,ghbn_cache[i].name,128) == 0)
352 if (i == GHBN_NUM) /* no hit*/
355 ret=gethostbyname(name);
357 if (ret == NULL) return(NULL);
358 if (j > 128) return(ret); /* too big to cache */
360 /* else add to cache */
361 if (ghbn_cache[lowi].ent != NULL)
362 ghbn_free(ghbn_cache[lowi].ent);
364 strncpy(ghbn_cache[lowi].name,name,128);
365 ghbn_cache[lowi].ent=ghbn_dup(ret);
366 ghbn_cache[lowi].order=BIO_ghbn_miss+BIO_ghbn_hits;
371 ret= ghbn_cache[i].ent;
372 ghbn_cache[i].order=BIO_ghbn_miss+BIO_ghbn_hits;
374 CRYPTO_w_unlock(CRYPTO_LOCK_BIO_GETHOSTBYNAME);
378 int BIO_sock_init(void)
381 static struct WSAData wsa_state;
388 signal(SIGINT,(void (*)(int))BIO_sock_cleanup);
391 memset(&wsa_state,0,sizeof(wsa_state));
392 if (WSAStartup(0x0101,&wsa_state)!=0)
394 err=WSAGetLastError();
395 SYSerr(SYS_F_WSASTARTUP,err);
396 BIOerr(BIO_F_BIO_SOCK_INIT,BIO_R_WSASTARTUP);
404 void BIO_sock_cleanup(void)
410 WSACancelBlockingCall();
416 int BIO_socket_ioctl(int fd, long type, unsigned long *arg)
420 i=ioctlsocket(fd,type,arg);
422 SYSerr(SYS_F_IOCTLSOCKET,get_last_socket_error());
426 /* The reason I have implemented this instead of using sscanf is because
427 * Visual C 1.52c gives an unresolved external when linking a DLL :-( */
428 static int get_ip(const char *str, unsigned char ip[4])
433 tmp[0]=tmp[1]=tmp[2]=tmp[3]=0;
438 if ((c >= '0') && (c <= '9'))
441 tmp[num]=tmp[num]*10+c-'0';
442 if (tmp[num] > 255) return(-1);
451 else if ((num == 3) && ok)
463 int BIO_get_accept_socket(char *host, int bind_mode)
466 struct sockaddr_in server,client;
475 if (!BIO_sock_init()) return(INVALID_SOCKET);
477 if ((str=BUF_strdup(host)) == NULL) return(INVALID_SOCKET);
501 if (!BIO_get_port(p,&port)) return(INVALID_SOCKET);
503 memset((char *)&server,0,sizeof(server));
504 server.sin_family=AF_INET;
505 server.sin_port=htons(port);
507 if (strcmp(h,"*") == 0)
508 server.sin_addr.s_addr=INADDR_ANY;
511 if (!BIO_get_host_ip(h,&(ip[0]))) return(INVALID_SOCKET);
513 ((unsigned long)ip[0]<<24L)|
514 ((unsigned long)ip[1]<<16L)|
515 ((unsigned long)ip[2]<< 8L)|
516 ((unsigned long)ip[3]);
517 server.sin_addr.s_addr=htonl(l);
521 s=socket(AF_INET,SOCK_STREAM,SOCKET_PROTOCOL);
522 if (s == INVALID_SOCKET)
524 SYSerr(SYS_F_SOCKET,get_last_socket_error());
525 ERR_add_error_data(3,"port='",host,"'");
526 BIOerr(BIO_F_BIO_GET_ACCEPT_SOCKET,BIO_R_UNABLE_TO_CREATE_SOCKET);
531 if (bind_mode == BIO_BIND_REUSEADDR)
535 ret=setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&i,sizeof(i));
536 bind_mode=BIO_BIND_NORMAL;
539 if (bind(s,(struct sockaddr *)&server,sizeof(server)) == -1)
542 err_num=get_last_socket_error();
543 if ((bind_mode == BIO_BIND_REUSEADDR_IF_UNUSED) &&
544 (err_num == EADDRINUSE))
546 memcpy((char *)&client,(char *)&server,sizeof(server));
547 if (strcmp(h,"*") == 0)
548 client.sin_addr.s_addr=htonl(0x7F000001);
549 cs=socket(AF_INET,SOCK_STREAM,SOCKET_PROTOCOL);
550 if (cs != INVALID_SOCKET)
553 ii=connect(cs,(struct sockaddr *)&client,
556 if (ii == INVALID_SOCKET)
558 bind_mode=BIO_BIND_REUSEADDR;
567 SYSerr(SYS_F_BIND,err_num);
568 ERR_add_error_data(3,"port='",host,"'");
569 BIOerr(BIO_F_BIO_GET_ACCEPT_SOCKET,BIO_R_UNABLE_TO_BIND_SOCKET);
572 if (listen(s,MAX_LISTEN) == -1)
574 SYSerr(SYS_F_BIND,get_last_socket_error());
575 ERR_add_error_data(3,"port='",host,"'");
576 BIOerr(BIO_F_BIO_GET_ACCEPT_SOCKET,BIO_R_UNABLE_TO_LISTEN_SOCKET);
581 if (str != NULL) Free(str);
582 if ((ret == 0) && (s != INVALID_SOCKET))
590 int BIO_accept(int sock, char **addr)
592 int ret=INVALID_SOCKET;
593 static struct sockaddr_in from;
599 memset((char *)&from,0,sizeof(from));
601 ret=accept(sock,(struct sockaddr *)&from,&len);
602 if (ret == INVALID_SOCKET)
604 SYSerr(SYS_F_ACCEPT,get_last_socket_error());
605 BIOerr(BIO_F_BIO_ACCEPT,BIO_R_ACCEPT_ERROR);
609 if (addr == NULL) goto end;
611 l=ntohl(from.sin_addr.s_addr);
612 port=ntohs(from.sin_port);
615 if ((p=Malloc(24)) == NULL)
617 BIOerr(BIO_F_BIO_ACCEPT,ERR_R_MALLOC_FAILURE);
622 sprintf(*addr,"%d.%d.%d.%d:%d",
623 (unsigned char)(l>>24L)&0xff,
624 (unsigned char)(l>>16L)&0xff,
625 (unsigned char)(l>> 8L)&0xff,
626 (unsigned char)(l )&0xff,
632 int BIO_set_tcp_ndelay(int s, int on)
635 #if defined(TCP_NODELAY) && (defined(IPPROTO_TCP) || defined(SOL_TCP))
646 ret=setsockopt(s,opt,TCP_NODELAY,(char *)&on,sizeof(on));
652 int BIO_socket_nbio(int s, int mode)
659 ret=BIO_socket_ioctl(s,FIONBIO,&l);