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 CRYPTO_w_lock(CRYPTO_LOCK_GETSERVBYNAME
);
154 s
=getservbyname(str
,"tcp");
156 *port_ptr
=ntohs((unsigned short)s
->s_port
);
157 CRYPTO_w_unlock(CRYPTO_LOCK_GETSERVBYNAME
);
160 if (strcmp(str
,"http") == 0)
162 else if (strcmp(str
,"telnet") == 0)
164 else if (strcmp(str
,"socks") == 0)
166 else if (strcmp(str
,"https") == 0)
168 else if (strcmp(str
,"ssl") == 0)
170 else if (strcmp(str
,"ftp") == 0)
172 else if (strcmp(str
,"gopher") == 0)
175 else if (strcmp(str
,"wais") == 0)
180 SYSerr(SYS_F_GETSERVBYNAME
,get_last_socket_error());
181 ERR_add_error_data(3,"service='",str
,"'");
189 int BIO_sock_error(int sock
)
195 /* Note: under Windows the third parameter is of type (char *)
196 * whereas under other systems it is (void *) if you don't have
197 * a cast it will choke the compiler: if you do have a cast then
198 * you can either go for (char *) or (void *).
200 i
=getsockopt(sock
,SOL_SOCKET
,SO_ERROR
,(void *)&j
,(void *)&size
);
207 long BIO_ghbn_ctrl(int cmd
, int iarg
, char *parg
)
214 case BIO_GHBN_CTRL_HITS
:
215 return(BIO_ghbn_hits
);
217 case BIO_GHBN_CTRL_MISSES
:
218 return(BIO_ghbn_miss
);
220 case BIO_GHBN_CTRL_CACHE_SIZE
:
223 case BIO_GHBN_CTRL_GET_ENTRY
:
224 if ((iarg
>= 0) && (iarg
<GHBN_NUM
) &&
225 (ghbn_cache
[iarg
].order
> 0))
228 if (p
== NULL
) return(0);
229 *p
=ghbn_cache
[iarg
].name
;
230 ghbn_cache
[iarg
].name
[128]='\0';
235 case BIO_GHBN_CTRL_FLUSH
:
236 for (i
=0; i
<GHBN_NUM
; i
++)
237 ghbn_cache
[i
].order
=0;
245 static struct hostent
*ghbn_dup(struct hostent
*a
)
251 ret
=(struct hostent
*)Malloc(sizeof(struct hostent
));
252 if (ret
== NULL
) return(NULL
);
253 memset(ret
,0,sizeof(struct hostent
));
255 for (i
=0; a
->h_aliases
[i
] != NULL
; i
++)
258 ret
->h_aliases
= (char **)Malloc(i
*sizeof(char *));
259 if (ret
->h_aliases
== NULL
)
261 memset(ret
->h_aliases
, 0, i
*sizeof(char *));
263 for (i
=0; a
->h_addr_list
[i
] != NULL
; i
++)
266 ret
->h_addr_list
=(char **)Malloc(i
*sizeof(char *));
267 if (ret
->h_addr_list
== NULL
)
269 memset(ret
->h_addr_list
, 0, i
*sizeof(char *));
271 j
=strlen(a
->h_name
)+1;
272 if ((ret
->h_name
=Malloc(j
)) == NULL
) goto err
;
273 memcpy((char *)ret
->h_name
,a
->h_name
,j
+1);
274 for (i
=0; a
->h_aliases
[i
] != NULL
; i
++)
276 j
=strlen(a
->h_aliases
[i
])+1;
277 if ((ret
->h_aliases
[i
]=Malloc(j
)) == NULL
) goto err
;
278 memcpy(ret
->h_aliases
[i
],a
->h_aliases
[i
],j
+1);
280 ret
->h_length
=a
->h_length
;
281 ret
->h_addrtype
=a
->h_addrtype
;
282 for (i
=0; a
->h_addr_list
[i
] != NULL
; i
++)
284 if ((ret
->h_addr_list
[i
]=Malloc(a
->h_length
)) == NULL
)
286 memcpy(ret
->h_addr_list
[i
],a
->h_addr_list
[i
],a
->h_length
);
299 static void ghbn_free(struct hostent
*a
)
306 if (a
->h_aliases
!= NULL
)
308 for (i
=0; a
->h_aliases
[i
] != NULL
; i
++)
309 Free(a
->h_aliases
[i
]);
312 if (a
->h_addr_list
!= NULL
)
314 for (i
=0; a
->h_addr_list
[i
] != NULL
; i
++)
315 Free(a
->h_addr_list
[i
]);
316 Free(a
->h_addr_list
);
318 if (a
->h_name
!= NULL
) Free((char *)a
->h_name
);
322 struct hostent
*BIO_gethostbyname(const char *name
)
326 unsigned long low
= (unsigned long)-1;
328 /* return(gethostbyname(name)); */
330 CRYPTO_w_lock(CRYPTO_LOCK_GETHOSTBYNAME
);
334 for (i
=0; i
<GHBN_NUM
; i
++)
336 if (low
> ghbn_cache
[i
].order
)
338 low
=ghbn_cache
[i
].order
;
341 if (ghbn_cache
[i
].order
> 0)
343 if (strncmp(name
,ghbn_cache
[i
].name
,128) == 0)
351 if (i
== GHBN_NUM
) /* no hit*/
354 ret
=gethostbyname(name
);
358 if (j
> 128) /* too big to cache */
364 /* else add to cache */
365 if (ghbn_cache
[lowi
].ent
!= NULL
)
366 ghbn_free(ghbn_cache
[lowi
].ent
);
367 ghbn_cache
[lowi
].name
[0] = '\0';
369 if((ret
=ghbn_cache
[lowi
].ent
=ghbn_dup(ret
)) == NULL
)
371 BIOerr(BIO_F_BIO_GETHOSTBYNAME
,ERR_R_MALLOC_FAILURE
);
374 strncpy(ghbn_cache
[lowi
].name
,name
,128);
375 ghbn_cache
[lowi
].order
=BIO_ghbn_miss
+BIO_ghbn_hits
;
380 ret
= ghbn_cache
[i
].ent
;
381 ghbn_cache
[i
].order
=BIO_ghbn_miss
+BIO_ghbn_hits
;
384 CRYPTO_w_unlock(CRYPTO_LOCK_GETHOSTBYNAME
);
388 int BIO_sock_init(void)
391 static struct WSAData wsa_state
;
398 signal(SIGINT
,(void (*)(int))BIO_sock_cleanup
);
401 memset(&wsa_state
,0,sizeof(wsa_state
));
402 if (WSAStartup(0x0101,&wsa_state
)!=0)
404 err
=WSAGetLastError();
405 SYSerr(SYS_F_WSASTARTUP
,err
);
406 BIOerr(BIO_F_BIO_SOCK_INIT
,BIO_R_WSASTARTUP
);
414 void BIO_sock_cleanup(void)
420 WSACancelBlockingCall();
426 #if !defined(VMS) || __VMS_VER >= 70000000
428 int BIO_socket_ioctl(int fd
, long type
, unsigned long *arg
)
432 i
=ioctlsocket(fd
,type
,arg
);
434 SYSerr(SYS_F_IOCTLSOCKET
,get_last_socket_error());
437 #endif /* __VMS_VER */
439 /* The reason I have implemented this instead of using sscanf is because
440 * Visual C 1.52c gives an unresolved external when linking a DLL :-( */
441 static int get_ip(const char *str
, unsigned char ip
[4])
446 tmp
[0]=tmp
[1]=tmp
[2]=tmp
[3]=0;
451 if ((c
>= '0') && (c
<= '9'))
454 tmp
[num
]=tmp
[num
]*10+c
-'0';
455 if (tmp
[num
] > 255) return(-1);
464 else if ((num
== 3) && ok
)
476 int BIO_get_accept_socket(char *host
, int bind_mode
)
479 struct sockaddr_in server
,client
;
488 if (!BIO_sock_init()) return(INVALID_SOCKET
);
490 if ((str
=BUF_strdup(host
)) == NULL
) return(INVALID_SOCKET
);
514 if (!BIO_get_port(p
,&port
)) return(INVALID_SOCKET
);
516 memset((char *)&server
,0,sizeof(server
));
517 server
.sin_family
=AF_INET
;
518 server
.sin_port
=htons(port
);
520 if (strcmp(h
,"*") == 0)
521 server
.sin_addr
.s_addr
=INADDR_ANY
;
524 if (!BIO_get_host_ip(h
,&(ip
[0]))) return(INVALID_SOCKET
);
526 ((unsigned long)ip
[0]<<24L)|
527 ((unsigned long)ip
[1]<<16L)|
528 ((unsigned long)ip
[2]<< 8L)|
529 ((unsigned long)ip
[3]);
530 server
.sin_addr
.s_addr
=htonl(l
);
534 s
=socket(AF_INET
,SOCK_STREAM
,SOCKET_PROTOCOL
);
535 if (s
== INVALID_SOCKET
)
537 SYSerr(SYS_F_SOCKET
,get_last_socket_error());
538 ERR_add_error_data(3,"port='",host
,"'");
539 BIOerr(BIO_F_BIO_GET_ACCEPT_SOCKET
,BIO_R_UNABLE_TO_CREATE_SOCKET
);
544 if (bind_mode
== BIO_BIND_REUSEADDR
)
548 ret
=setsockopt(s
,SOL_SOCKET
,SO_REUSEADDR
,(char *)&i
,sizeof(i
));
549 bind_mode
=BIO_BIND_NORMAL
;
552 if (bind(s
,(struct sockaddr
*)&server
,sizeof(server
)) == -1)
555 err_num
=get_last_socket_error();
556 if ((bind_mode
== BIO_BIND_REUSEADDR_IF_UNUSED
) &&
557 (err_num
== EADDRINUSE
))
559 memcpy((char *)&client
,(char *)&server
,sizeof(server
));
560 if (strcmp(h
,"*") == 0)
561 client
.sin_addr
.s_addr
=htonl(0x7F000001);
562 cs
=socket(AF_INET
,SOCK_STREAM
,SOCKET_PROTOCOL
);
563 if (cs
!= INVALID_SOCKET
)
566 ii
=connect(cs
,(struct sockaddr
*)&client
,
569 if (ii
== INVALID_SOCKET
)
571 bind_mode
=BIO_BIND_REUSEADDR
;
580 SYSerr(SYS_F_BIND
,err_num
);
581 ERR_add_error_data(3,"port='",host
,"'");
582 BIOerr(BIO_F_BIO_GET_ACCEPT_SOCKET
,BIO_R_UNABLE_TO_BIND_SOCKET
);
585 if (listen(s
,MAX_LISTEN
) == -1)
587 SYSerr(SYS_F_BIND
,get_last_socket_error());
588 ERR_add_error_data(3,"port='",host
,"'");
589 BIOerr(BIO_F_BIO_GET_ACCEPT_SOCKET
,BIO_R_UNABLE_TO_LISTEN_SOCKET
);
594 if (str
!= NULL
) Free(str
);
595 if ((ret
== 0) && (s
!= INVALID_SOCKET
))
603 int BIO_accept(int sock
, char **addr
)
605 int ret
=INVALID_SOCKET
;
606 static struct sockaddr_in from
;
612 memset((char *)&from
,0,sizeof(from
));
614 /* Note: under VMS with SOCKETSHR the fourth parameter is currently
615 * of type (int *) whereas under other systems it is (void *) if
616 * you don't have a cast it will choke the compiler: if you do
617 * have a cast then you can either go for (int *) or (void *).
619 ret
=accept(sock
,(struct sockaddr
*)&from
,(void *)&len
);
620 if (ret
== INVALID_SOCKET
)
622 SYSerr(SYS_F_ACCEPT
,get_last_socket_error());
623 BIOerr(BIO_F_BIO_ACCEPT
,BIO_R_ACCEPT_ERROR
);
627 if (addr
== NULL
) goto end
;
629 l
=ntohl(from
.sin_addr
.s_addr
);
630 port
=ntohs(from
.sin_port
);
633 if ((p
=Malloc(24)) == NULL
)
635 BIOerr(BIO_F_BIO_ACCEPT
,ERR_R_MALLOC_FAILURE
);
640 sprintf(*addr
,"%d.%d.%d.%d:%d",
641 (unsigned char)(l
>>24L)&0xff,
642 (unsigned char)(l
>>16L)&0xff,
643 (unsigned char)(l
>> 8L)&0xff,
644 (unsigned char)(l
)&0xff,
650 int BIO_set_tcp_ndelay(int s
, int on
)
653 #if defined(TCP_NODELAY) && (defined(IPPROTO_TCP) || defined(SOL_TCP))
664 ret
=setsockopt(s
,opt
,TCP_NODELAY
,(char *)&on
,sizeof(on
));
670 int BIO_socket_nbio(int s
, int mode
)
677 ret
=BIO_socket_ioctl(s
,FIONBIO
,&l
);