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(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(str,ip)
117 if (i > 0) return(1);
120 BIOerr(BIO_F_BIO_GET_HOST_IP,BIO_R_INVALID_IP_ADDRESS);
121 ERR_add_error_data(2,"host=",str);
125 { /* do a gethostbyname */
126 if (!BIO_sock_init()) return(0);
128 he=BIO_gethostbyname(str);
131 BIOerr(BIO_F_BIO_GET_HOST_IP,BIO_R_BAD_HOSTNAME_LOOKUP);
132 ERR_add_error_data(2,"host=",str);
136 /* cast to short because of win16 winsock definition */
137 if ((short)he->h_addrtype != AF_INET)
139 BIOerr(BIO_F_BIO_GET_HOST_IP,BIO_R_GETHOSTBYNAME_ADDR_IS_NOT_AF_INET);
140 ERR_add_error_data(2,"host=",str);
144 ip[i]=he->h_addr_list[0][i];
149 int BIO_get_port(str,port_ptr)
158 BIOerr(BIO_F_BIO_GET_PORT,BIO_R_NO_PORT_DEFINED);
163 *port_ptr=(unsigned short)i;
166 s=getservbyname(str,"tcp");
169 if (strcmp(str,"http") == 0)
171 else if (strcmp(str,"telnet") == 0)
173 else if (strcmp(str,"socks") == 0)
175 else if (strcmp(str,"https") == 0)
177 else if (strcmp(str,"ssl") == 0)
179 else if (strcmp(str,"ftp") == 0)
181 else if (strcmp(str,"gopher") == 0)
184 else if (strcmp(str,"wais") == 0)
189 SYSerr(SYS_F_GETSERVBYNAME,get_last_socket_error());
190 ERR_add_error_data(3,"service='",str,"'");
195 *port_ptr=htons((unsigned short)s->s_port);
200 int BIO_sock_error(sock)
207 i=getsockopt(sock,SOL_SOCKET,SO_ERROR,(char *)&j,&size);
214 long BIO_ghbn_ctrl(cmd,iarg,parg)
224 case BIO_GHBN_CTRL_HITS:
225 return(BIO_ghbn_hits);
227 case BIO_GHBN_CTRL_MISSES:
228 return(BIO_ghbn_miss);
230 case BIO_GHBN_CTRL_CACHE_SIZE:
233 case BIO_GHBN_CTRL_GET_ENTRY:
234 if ((iarg >= 0) && (iarg <GHBN_NUM) &&
235 (ghbn_cache[iarg].order > 0))
238 if (p == NULL) return(0);
239 *p=ghbn_cache[iarg].name;
240 ghbn_cache[iarg].name[128]='\0';
245 case BIO_GHBN_CTRL_FLUSH:
246 for (i=0; i<GHBN_NUM; i++)
247 ghbn_cache[i].order=0;
255 static struct hostent *ghbn_dup(a)
261 ret=(struct hostent *)malloc(sizeof(struct hostent));
262 if (ret == NULL) return(NULL);
263 memset(ret,0,sizeof(struct hostent));
265 for (i=0; a->h_aliases[i] != NULL; i++)
268 ret->h_aliases=(char **)malloc(sizeof(char *)*i);
269 memset(ret->h_aliases,0,sizeof(char *)*i);
270 if (ret == NULL) goto err;
272 for (i=0; a->h_addr_list[i] != NULL; i++)
275 ret->h_addr_list=(char **)malloc(sizeof(char *)*i);
276 memset(ret->h_addr_list,0,sizeof(char *)*i);
277 if (ret->h_addr_list == NULL) goto err;
279 j=strlen(a->h_name)+1;
280 if ((ret->h_name=malloc(j)) == NULL) goto err;
281 memcpy((char *)ret->h_name,a->h_name,j);
282 for (i=0; a->h_aliases[i] != NULL; i++)
284 j=strlen(a->h_aliases[i])+1;
285 if ((ret->h_aliases[i]=malloc(j)) == NULL) goto err;
286 memcpy(ret->h_aliases[i],a->h_aliases[i],j);
288 ret->h_length=a->h_length;
289 ret->h_addrtype=a->h_addrtype;
290 for (i=0; a->h_addr_list[i] != NULL; i++)
292 if ((ret->h_addr_list[i]=malloc(a->h_length)) == NULL)
294 memcpy(ret->h_addr_list[i],a->h_addr_list[i],a->h_length);
303 static void ghbn_free(a)
308 if (a->h_aliases != NULL)
310 for (i=0; a->h_aliases[i] != NULL; i++)
311 free(a->h_aliases[i]);
314 if (a->h_addr_list != NULL)
316 for (i=0; a->h_addr_list[i] != NULL; i++)
317 free(a->h_addr_list[i]);
318 free(a->h_addr_list);
320 if (a->h_name != NULL) free((char *)a->h_name);
324 struct hostent *BIO_gethostbyname(name)
329 unsigned long low= (unsigned long)-1;
331 /* return(gethostbyname(name)); */
333 CRYPTO_w_lock(CRYPTO_LOCK_BIO_GETHOSTBYNAME);
337 for (i=0; i<GHBN_NUM; i++)
339 if (low > ghbn_cache[i].order)
341 low=ghbn_cache[i].order;
344 if (ghbn_cache[i].order > 0)
346 if (strncmp(name,ghbn_cache[i].name,128) == 0)
354 if (i == GHBN_NUM) /* no hit*/
357 ret=gethostbyname(name);
359 if (ret == NULL) return(NULL);
360 if (j > 128) return(ret); /* too big to cache */
362 /* else add to cache */
363 if (ghbn_cache[lowi].ent != NULL)
364 ghbn_free(ghbn_cache[lowi].ent);
366 strncpy(ghbn_cache[lowi].name,name,128);
367 ghbn_cache[lowi].ent=ghbn_dup(ret);
368 ghbn_cache[lowi].order=BIO_ghbn_miss+BIO_ghbn_hits;
373 ret= ghbn_cache[i].ent;
374 ghbn_cache[i].order=BIO_ghbn_miss+BIO_ghbn_hits;
376 CRYPTO_w_unlock(CRYPTO_LOCK_BIO_GETHOSTBYNAME);
383 static struct WSAData wsa_state;
390 signal(SIGINT,(void (*)(int))BIO_sock_cleanup);
393 memset(&wsa_state,0,sizeof(wsa_state));
394 if (WSAStartup(0x0101,&wsa_state)!=0)
396 err=WSAGetLastError();
397 SYSerr(SYS_F_WSASTARTUP,err);
398 BIOerr(BIO_F_BIO_SOCK_INIT,BIO_R_WSASTARTUP);
406 void BIO_sock_cleanup()
412 WSACancelBlockingCall();
418 int BIO_socket_ioctl(fd,type,arg)
425 i=ioctlsocket(fd,type,arg);
427 SYSerr(SYS_F_IOCTLSOCKET,get_last_socket_error());
431 /* The reason I have implemented this instead of using sscanf is because
432 * Visual C 1.52c gives an unresolved external when linking a DLL :-( */
433 static int get_ip(str,ip)
440 tmp[0]=tmp[1]=tmp[2]=tmp[3]=0;
445 if ((c >= '0') && (c <= '9'))
448 tmp[num]=tmp[num]*10+c-'0';
449 if (tmp[num] > 255) return(-1);
458 else if ((num == 3) && ok)
470 int BIO_get_accept_socket(host)
474 struct sockaddr_in server;
481 if (!BIO_sock_init()) return(INVALID_SOCKET);
483 if ((str=BUF_strdup(host)) == NULL) return(INVALID_SOCKET);
507 if (!BIO_get_port(p,&port)) return(INVALID_SOCKET);
509 memset((char *)&server,0,sizeof(server));
510 server.sin_family=AF_INET;
511 server.sin_port=htons((unsigned short)port);
513 if (strcmp(h,"*") == 0)
514 server.sin_addr.s_addr=INADDR_ANY;
517 if (!BIO_get_host_ip(h,&(ip[0]))) return(INVALID_SOCKET);
519 ((unsigned long)ip[0]<<24L)|
520 ((unsigned long)ip[0]<<16L)|
521 ((unsigned long)ip[0]<< 8L)|
522 ((unsigned long)ip[0]);
523 server.sin_addr.s_addr=htonl(l);
526 s=socket(AF_INET,SOCK_STREAM,SOCKET_PROTOCOL);
527 if (s == INVALID_SOCKET)
529 SYSerr(SYS_F_SOCKET,get_last_socket_error());
530 ERR_add_error_data(3,"port='",host,"'");
531 BIOerr(BIO_F_BIO_GET_ACCEPT_SOCKET,BIO_R_UNABLE_TO_CREATE_SOCKET);
534 if (bind(s,(struct sockaddr *)&server,sizeof(server)) == -1)
536 SYSerr(SYS_F_BIND,get_last_socket_error());
537 ERR_add_error_data(3,"port='",host,"'");
538 BIOerr(BIO_F_BIO_GET_ACCEPT_SOCKET,BIO_R_UNABLE_TO_BIND_SOCKET);
541 if (listen(s,MAX_LISTEN) == -1)
543 SYSerr(SYS_F_BIND,get_last_socket_error());
544 ERR_add_error_data(3,"port='",host,"'");
545 BIOerr(BIO_F_BIO_GET_ACCEPT_SOCKET,BIO_R_UNABLE_TO_LISTEN_SOCKET);
550 if (str != NULL) Free(str);
551 if ((ret == 0) && (s != INVALID_SOCKET))
563 int BIO_accept(sock,addr)
567 int ret=INVALID_SOCKET;
568 static struct sockaddr_in from;
574 memset((char *)&from,0,sizeof(from));
576 ret=accept(sock,(struct sockaddr *)&from,&len);
577 if (ret == INVALID_SOCKET)
579 SYSerr(SYS_F_ACCEPT,get_last_socket_error());
580 BIOerr(BIO_F_BIO_ACCEPT,BIO_R_ACCEPT_ERROR);
584 if (addr == NULL) goto end;
586 l=ntohl(from.sin_addr.s_addr);
587 port=ntohs(from.sin_port);
590 if ((p=Malloc(24)) == NULL)
592 BIOerr(BIO_F_BIO_ACCEPT,ERR_R_MALLOC_FAILURE);
597 sprintf(*addr,"%d.%d.%d.%d:%d",
598 (unsigned char)(l>>24L)&0xff,
599 (unsigned char)(l>>16L)&0xff,
600 (unsigned char)(l>> 8L)&0xff,
601 (unsigned char)(l )&0xff,
607 int BIO_set_tcp_ndelay(s,on)
612 #if defined(TCP_NODELAY) && (defined(IPPROTO_TCP) || defined(SOL_TCP))
623 ret=setsockopt(s,opt,TCP_NODELAY,(char *)&on,sizeof(on));