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
);