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.]
66 #include <openssl/bio.h>
69 #define SOCKET_PROTOCOL 0 /* more microsoft stupidity */
71 #define SOCKET_PROTOCOL IPPROTO_TCP
75 #define MAX_LISTEN SOMAXCONN
76 #elif defined(SO_MAXCONN)
77 #define MAX_LISTEN SO_MAXCONN
83 static int wsa_init_done=0;
86 static unsigned long BIO_ghbn_hits=0L;
87 static unsigned long BIO_ghbn_miss=0L;
90 static struct ghbn_cache_st
95 } ghbn_cache[GHBN_NUM];
97 static int get_ip(const char *str,unsigned char *ip);
98 static void ghbn_free(struct hostent *a);
99 static struct hostent *ghbn_dup(struct hostent *a);
100 int BIO_get_host_ip(const char *str, unsigned char *ip)
106 if (i > 0) return(1);
109 BIOerr(BIO_F_BIO_GET_HOST_IP,BIO_R_INVALID_IP_ADDRESS);
110 ERR_add_error_data(2,"host=",str);
114 { /* do a gethostbyname */
115 if (!BIO_sock_init()) return(0);
117 he=BIO_gethostbyname(str);
120 BIOerr(BIO_F_BIO_GET_HOST_IP,BIO_R_BAD_HOSTNAME_LOOKUP);
121 ERR_add_error_data(2,"host=",str);
125 /* cast to short because of win16 winsock definition */
126 if ((short)he->h_addrtype != AF_INET)
128 BIOerr(BIO_F_BIO_GET_HOST_IP,BIO_R_GETHOSTBYNAME_ADDR_IS_NOT_AF_INET);
129 ERR_add_error_data(2,"host=",str);
133 ip[i]=he->h_addr_list[0][i];
138 int BIO_get_port(const char *str, unsigned short *port_ptr)
145 BIOerr(BIO_F_BIO_GET_PORT,BIO_R_NO_PORT_DEFINED);
150 *port_ptr=(unsigned short)i;
153 s=getservbyname(str,"tcp");
156 if (strcmp(str,"http") == 0)
158 else if (strcmp(str,"telnet") == 0)
160 else if (strcmp(str,"socks") == 0)
162 else if (strcmp(str,"https") == 0)
164 else if (strcmp(str,"ssl") == 0)
166 else if (strcmp(str,"ftp") == 0)
168 else if (strcmp(str,"gopher") == 0)
171 else if (strcmp(str,"wais") == 0)
176 SYSerr(SYS_F_GETSERVBYNAME,get_last_socket_error());
177 ERR_add_error_data(3,"service='",str,"'");
182 *port_ptr=htons((unsigned short)s->s_port);
187 int BIO_sock_error(int sock)
193 /* Note: under Windows the third parameter is of type (char *)
194 * whereas under other systems it is (void *) if you don't have
195 * a cast it will choke the compiler: if you do have a cast then
196 * you can either go for (char *) or (void *).
198 i=getsockopt(sock,SOL_SOCKET,SO_ERROR,(void *)&j,&size);
205 long BIO_ghbn_ctrl(int cmd, int iarg, char *parg)
212 case BIO_GHBN_CTRL_HITS:
213 return(BIO_ghbn_hits);
215 case BIO_GHBN_CTRL_MISSES:
216 return(BIO_ghbn_miss);
218 case BIO_GHBN_CTRL_CACHE_SIZE:
221 case BIO_GHBN_CTRL_GET_ENTRY:
222 if ((iarg >= 0) && (iarg <GHBN_NUM) &&
223 (ghbn_cache[iarg].order > 0))
226 if (p == NULL) return(0);
227 *p=ghbn_cache[iarg].name;
228 ghbn_cache[iarg].name[128]='\0';
233 case BIO_GHBN_CTRL_FLUSH:
234 for (i=0; i<GHBN_NUM; i++)
235 ghbn_cache[i].order=0;
243 static struct hostent *ghbn_dup(struct hostent *a)
249 ret=(struct hostent *)Malloc(sizeof(struct hostent));
250 if (ret == NULL) return(NULL);
251 memset(ret,0,sizeof(struct hostent));
253 for (i=0; a->h_aliases[i] != NULL; i++)
256 ret->h_aliases=(char **)Malloc(sizeof(char *)*i);
257 memset(ret->h_aliases,0,sizeof(char *)*i);
258 if (ret == NULL) goto err;
260 for (i=0; a->h_addr_list[i] != NULL; i++)
263 ret->h_addr_list=(char **)Malloc(sizeof(char *)*i);
264 memset(ret->h_addr_list,0,sizeof(char *)*i);
265 if (ret->h_addr_list == NULL) goto err;
267 j=strlen(a->h_name)+1;
268 if ((ret->h_name=Malloc(j)) == NULL) goto err;
269 memcpy((char *)ret->h_name,a->h_name,j+1);
270 for (i=0; a->h_aliases[i] != NULL; i++)
272 j=strlen(a->h_aliases[i])+1;
273 if ((ret->h_aliases[i]=Malloc(j)) == NULL) goto err;
274 memcpy(ret->h_aliases[i],a->h_aliases[i],j+1);
276 ret->h_length=a->h_length;
277 ret->h_addrtype=a->h_addrtype;
278 for (i=0; a->h_addr_list[i] != NULL; i++)
280 if ((ret->h_addr_list[i]=Malloc(a->h_length)) == NULL)
282 memcpy(ret->h_addr_list[i],a->h_addr_list[i],a->h_length);
295 static void ghbn_free(struct hostent *a)
302 if (a->h_aliases != NULL)
304 for (i=0; a->h_aliases[i] != NULL; i++)
305 Free(a->h_aliases[i]);
308 if (a->h_addr_list != NULL)
310 for (i=0; a->h_addr_list[i] != NULL; i++)
311 Free(a->h_addr_list[i]);
312 Free(a->h_addr_list);
314 if (a->h_name != NULL) Free((char *)a->h_name);
318 struct hostent *BIO_gethostbyname(const char *name)
322 unsigned long low= (unsigned long)-1;
324 /* return(gethostbyname(name)); */
326 CRYPTO_w_lock(CRYPTO_LOCK_BIO_GETHOSTBYNAME);
330 for (i=0; i<GHBN_NUM; i++)
332 if (low > ghbn_cache[i].order)
334 low=ghbn_cache[i].order;
337 if (ghbn_cache[i].order > 0)
339 if (strncmp(name,ghbn_cache[i].name,128) == 0)
347 if (i == GHBN_NUM) /* no hit*/
350 ret=gethostbyname(name);
352 if (ret == NULL) return(NULL);
353 if (j > 128) return(ret); /* too big to cache */
355 /* else add to cache */
356 if (ghbn_cache[lowi].ent != NULL)
357 ghbn_free(ghbn_cache[lowi].ent);
359 strncpy(ghbn_cache[lowi].name,name,128);
360 ghbn_cache[lowi].ent=ghbn_dup(ret);
361 ghbn_cache[lowi].order=BIO_ghbn_miss+BIO_ghbn_hits;
366 ret= ghbn_cache[i].ent;
367 ghbn_cache[i].order=BIO_ghbn_miss+BIO_ghbn_hits;
369 CRYPTO_w_unlock(CRYPTO_LOCK_BIO_GETHOSTBYNAME);
373 int BIO_sock_init(void)
376 static struct WSAData wsa_state;
383 signal(SIGINT,(void (*)(int))BIO_sock_cleanup);
386 memset(&wsa_state,0,sizeof(wsa_state));
387 if (WSAStartup(0x0101,&wsa_state)!=0)
389 err=WSAGetLastError();
390 SYSerr(SYS_F_WSASTARTUP,err);
391 BIOerr(BIO_F_BIO_SOCK_INIT,BIO_R_WSASTARTUP);
399 void BIO_sock_cleanup(void)
405 WSACancelBlockingCall();
411 int BIO_socket_ioctl(int fd, long type, unsigned long *arg)
415 i=ioctlsocket(fd,type,arg);
417 SYSerr(SYS_F_IOCTLSOCKET,get_last_socket_error());
421 /* The reason I have implemented this instead of using sscanf is because
422 * Visual C 1.52c gives an unresolved external when linking a DLL :-( */
423 static int get_ip(const char *str, unsigned char ip[4])
428 tmp[0]=tmp[1]=tmp[2]=tmp[3]=0;
433 if ((c >= '0') && (c <= '9'))
436 tmp[num]=tmp[num]*10+c-'0';
437 if (tmp[num] > 255) return(-1);
446 else if ((num == 3) && ok)
458 int BIO_get_accept_socket(char *host, int bind_mode)
461 struct sockaddr_in server,client;
470 if (!BIO_sock_init()) return(INVALID_SOCKET);
472 if ((str=BUF_strdup(host)) == NULL) return(INVALID_SOCKET);
496 if (!BIO_get_port(p,&port)) return(INVALID_SOCKET);
498 memset((char *)&server,0,sizeof(server));
499 server.sin_family=AF_INET;
500 server.sin_port=htons(port);
502 if (strcmp(h,"*") == 0)
503 server.sin_addr.s_addr=INADDR_ANY;
506 if (!BIO_get_host_ip(h,&(ip[0]))) return(INVALID_SOCKET);
508 ((unsigned long)ip[0]<<24L)|
509 ((unsigned long)ip[1]<<16L)|
510 ((unsigned long)ip[2]<< 8L)|
511 ((unsigned long)ip[3]);
512 server.sin_addr.s_addr=htonl(l);
516 s=socket(AF_INET,SOCK_STREAM,SOCKET_PROTOCOL);
517 if (s == INVALID_SOCKET)
519 SYSerr(SYS_F_SOCKET,get_last_socket_error());
520 ERR_add_error_data(3,"port='",host,"'");
521 BIOerr(BIO_F_BIO_GET_ACCEPT_SOCKET,BIO_R_UNABLE_TO_CREATE_SOCKET);
526 if (bind_mode == BIO_BIND_REUSEADDR)
530 ret=setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&i,sizeof(i));
531 bind_mode=BIO_BIND_NORMAL;
534 if (bind(s,(struct sockaddr *)&server,sizeof(server)) == -1)
537 err_num=get_last_socket_error();
538 if ((bind_mode == BIO_BIND_REUSEADDR_IF_UNUSED) &&
539 (err_num == EADDRINUSE))
541 memcpy((char *)&client,(char *)&server,sizeof(server));
542 if (strcmp(h,"*") == 0)
543 client.sin_addr.s_addr=htonl(0x7F000001);
544 cs=socket(AF_INET,SOCK_STREAM,SOCKET_PROTOCOL);
545 if (cs != INVALID_SOCKET)
548 ii=connect(cs,(struct sockaddr *)&client,
551 if (ii == INVALID_SOCKET)
553 bind_mode=BIO_BIND_REUSEADDR;
562 SYSerr(SYS_F_BIND,err_num);
563 ERR_add_error_data(3,"port='",host,"'");
564 BIOerr(BIO_F_BIO_GET_ACCEPT_SOCKET,BIO_R_UNABLE_TO_BIND_SOCKET);
567 if (listen(s,MAX_LISTEN) == -1)
569 SYSerr(SYS_F_BIND,get_last_socket_error());
570 ERR_add_error_data(3,"port='",host,"'");
571 BIOerr(BIO_F_BIO_GET_ACCEPT_SOCKET,BIO_R_UNABLE_TO_LISTEN_SOCKET);
576 if (str != NULL) Free(str);
577 if ((ret == 0) && (s != INVALID_SOCKET))
585 int BIO_accept(int sock, char **addr)
587 int ret=INVALID_SOCKET;
588 static struct sockaddr_in from;
594 memset((char *)&from,0,sizeof(from));
596 ret=accept(sock,(struct sockaddr *)&from,&len);
597 if (ret == INVALID_SOCKET)
599 SYSerr(SYS_F_ACCEPT,get_last_socket_error());
600 BIOerr(BIO_F_BIO_ACCEPT,BIO_R_ACCEPT_ERROR);
604 if (addr == NULL) goto end;
606 l=ntohl(from.sin_addr.s_addr);
607 port=ntohs(from.sin_port);
610 if ((p=Malloc(24)) == NULL)
612 BIOerr(BIO_F_BIO_ACCEPT,ERR_R_MALLOC_FAILURE);
617 sprintf(*addr,"%d.%d.%d.%d:%d",
618 (unsigned char)(l>>24L)&0xff,
619 (unsigned char)(l>>16L)&0xff,
620 (unsigned char)(l>> 8L)&0xff,
621 (unsigned char)(l )&0xff,
627 int BIO_set_tcp_ndelay(int s, int on)
630 #if defined(TCP_NODELAY) && (defined(IPPROTO_TCP) || defined(SOL_TCP))
641 ret=setsockopt(s,opt,TCP_NODELAY,(char *)&on,sizeof(on));
647 int BIO_socket_nbio(int s, int mode)
654 ret=BIO_socket_ioctl(s,FIONBIO,&l);