1 /* crypto/bio/bss_conn.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.]
65 #include <openssl/bio.h>
68 #define SOCKET_PROTOCOL 0 /* more microsoft stupidity */
70 #define SOCKET_PROTOCOL IPPROTO_TCP
73 typedef struct bio_connect_st
84 struct sockaddr_in them
;
86 /* int socket; this will be kept in bio->num so that it is
87 * compatable with the bss_sock bio */
89 /* called when the connection is initially made
90 * callback(BIO,state,ret); The callback should return
91 * 'ret'. state is for compatablity with the ssl info_callback */
92 int (*info_callback
)();
95 static int conn_write(BIO
*h
,char *buf
,int num
);
96 static int conn_read(BIO
*h
,char *buf
,int size
);
97 static int conn_puts(BIO
*h
,char *str
);
98 static long conn_ctrl(BIO
*h
,int cmd
,long arg1
,char *arg2
);
99 static int conn_new(BIO
*h
);
100 static int conn_free(BIO
*data
);
102 static int conn_state(BIO
*b
, BIO_CONNECT
*c
);
103 static void conn_close_socket(BIO
*data
);
104 BIO_CONNECT
*BIO_CONNECT_new(void );
105 void BIO_CONNECT_free(BIO_CONNECT
*a
);
107 static BIO_METHOD methods_connectp
=
114 NULL
, /* connect_gets, */
120 static int conn_state(BIO
*b
, BIO_CONNECT
*c
)
127 if (c
->info_callback
!= NULL
)
134 case BIO_CONN_S_BEFORE
:
138 BIOerr(BIO_F_CONN_STATE
,BIO_R_NO_HOSTNAME_SPECIFIED
);
141 for ( ; *p
!= '\0'; p
++)
143 if ((*p
== ':') || (*p
== '/')) break;
147 if ((i
== ':') || (i
== '/'))
159 if (c
->param_port
!= NULL
)
161 c
->param_port
=BUF_strdup(p
);
165 if (c
->param_port
== NULL
)
167 BIOerr(BIO_F_CONN_STATE
,BIO_R_NO_PORT_SPECIFIED
);
168 ERR_add_error_data(2,"host=",c
->param_hostname
);
171 c
->state
=BIO_CONN_S_GET_IP
;
174 case BIO_CONN_S_GET_IP
:
175 if (BIO_get_host_ip(c
->param_hostname
,&(c
->ip
[0])) <= 0)
177 c
->state
=BIO_CONN_S_GET_PORT
;
180 case BIO_CONN_S_GET_PORT
:
181 if (c
->param_port
== NULL
)
186 else if (BIO_get_port(c
->param_port
,&c
->port
) <= 0)
188 c
->state
=BIO_CONN_S_CREATE_SOCKET
;
191 case BIO_CONN_S_CREATE_SOCKET
:
192 /* now setup address */
193 memset((char *)&c
->them
,0,sizeof(c
->them
));
194 c
->them
.sin_family
=AF_INET
;
195 c
->them
.sin_port
=htons((unsigned short)c
->port
);
197 ((unsigned long)c
->ip
[0]<<24L)|
198 ((unsigned long)c
->ip
[1]<<16L)|
199 ((unsigned long)c
->ip
[2]<< 8L)|
200 ((unsigned long)c
->ip
[3]);
201 c
->them
.sin_addr
.s_addr
=htonl(l
);
202 c
->state
=BIO_CONN_S_CREATE_SOCKET
;
204 ret
=socket(AF_INET
,SOCK_STREAM
,SOCKET_PROTOCOL
);
205 if (ret
== INVALID_SOCKET
)
207 SYSerr(SYS_F_SOCKET
,get_last_socket_error());
208 ERR_add_error_data(4,"host=",c
->param_hostname
,
210 BIOerr(BIO_F_CONN_STATE
,BIO_R_UNABLE_TO_CREATE_SOCKET
);
214 c
->state
=BIO_CONN_S_NBIO
;
217 case BIO_CONN_S_NBIO
:
220 if (!BIO_socket_nbio(b
->num
,1))
222 BIOerr(BIO_F_CONN_STATE
,BIO_R_ERROR_SETTING_NBIO
);
223 ERR_add_error_data(4,"host=",
229 c
->state
=BIO_CONN_S_CONNECT
;
233 i
=setsockopt(b
->num
,SOL_SOCKET
,SO_KEEPALIVE
,(char *)&i
,sizeof(i
));
236 SYSerr(SYS_F_SOCKET
,get_last_socket_error());
237 ERR_add_error_data(4,"host=",c
->param_hostname
,
239 BIOerr(BIO_F_CONN_STATE
,BIO_R_KEEPALIVE
);
245 case BIO_CONN_S_CONNECT
:
246 BIO_clear_retry_flags(b
);
248 (struct sockaddr
*)&c
->them
,
253 if (BIO_sock_should_retry(ret
))
255 BIO_set_retry_special(b
);
256 c
->state
=BIO_CONN_S_BLOCKED_CONNECT
;
257 b
->retry_reason
=BIO_RR_CONNECT
;
261 SYSerr(SYS_F_CONNECT
,get_last_socket_error());
262 ERR_add_error_data(4,"host=",
265 BIOerr(BIO_F_CONN_STATE
,BIO_R_CONNECT_ERROR
);
270 c
->state
=BIO_CONN_S_OK
;
273 case BIO_CONN_S_BLOCKED_CONNECT
:
274 i
=BIO_sock_error(b
->num
);
277 BIO_clear_retry_flags(b
);
278 SYSerr(SYS_F_CONNECT
,i
);
279 ERR_add_error_data(4,"host=",
282 BIOerr(BIO_F_CONN_STATE
,BIO_R_NBIO_CONNECT_ERROR
);
287 c
->state
=BIO_CONN_S_OK
;
300 if (!(ret
=cb((BIO
*)b
,c
->state
,ret
)))
305 /* Loop does not exit */
308 ret
=cb((BIO
*)b
,c
->state
,ret
);
313 BIO_CONNECT
*BIO_CONNECT_new(void)
317 if ((ret
=(BIO_CONNECT
*)Malloc(sizeof(BIO_CONNECT
))) == NULL
)
319 ret
->state
=BIO_CONN_S_BEFORE
;
320 ret
->param_hostname
=NULL
;
321 ret
->param_port
=NULL
;
322 ret
->info_callback
=NULL
;
329 memset((char *)&ret
->them
,0,sizeof(ret
->them
));
333 void BIO_CONNECT_free(BIO_CONNECT
*a
)
338 if (a
->param_hostname
!= NULL
)
339 Free(a
->param_hostname
);
340 if (a
->param_port
!= NULL
)
345 BIO_METHOD
*BIO_s_connect(void)
347 return(&methods_connectp
);
350 static int conn_new(BIO
*bi
)
353 bi
->num
=INVALID_SOCKET
;
355 if ((bi
->ptr
=(char *)BIO_CONNECT_new()) == NULL
)
361 static void conn_close_socket(BIO
*bio
)
365 c
=(BIO_CONNECT
*)bio
->ptr
;
366 if (bio
->num
!= INVALID_SOCKET
)
368 /* Only do a shutdown if things were established */
369 if (c
->state
== BIO_CONN_S_OK
)
370 shutdown(bio
->num
,2);
371 closesocket(bio
->num
);
372 bio
->num
=INVALID_SOCKET
;
376 static int conn_free(BIO
*a
)
380 if (a
== NULL
) return(0);
381 data
=(BIO_CONNECT
*)a
->ptr
;
385 conn_close_socket(a
);
386 BIO_CONNECT_free(data
);
394 static int conn_read(BIO
*b
, char *out
, int outl
)
399 data
=(BIO_CONNECT
*)b
->ptr
;
400 if (data
->state
!= BIO_CONN_S_OK
)
402 ret
=conn_state(b
,data
);
409 clear_socket_error();
410 ret
=readsocket(b
->num
,out
,outl
);
411 BIO_clear_retry_flags(b
);
414 if (BIO_sock_should_retry(ret
))
415 BIO_set_retry_read(b
);
421 static int conn_write(BIO
*b
, char *in
, int inl
)
426 data
=(BIO_CONNECT
*)b
->ptr
;
427 if (data
->state
!= BIO_CONN_S_OK
)
429 ret
=conn_state(b
,data
);
430 if (ret
<= 0) return(ret
);
433 clear_socket_error();
434 ret
=writesocket(b
->num
,in
,inl
);
435 BIO_clear_retry_flags(b
);
438 if (BIO_sock_should_retry(ret
))
439 BIO_set_retry_write(b
);
444 static long conn_ctrl(BIO
*b
, int cmd
, long num
, char *ptr
)
452 data
=(BIO_CONNECT
*)b
->ptr
;
458 data
->state
=BIO_CONN_S_BEFORE
;
459 conn_close_socket(b
);
462 case BIO_C_DO_STATE_MACHINE
:
463 /* use this one to start the connection */
464 if (!data
->state
!= BIO_CONN_S_OK
)
465 ret
=(long)conn_state(b
,data
);
469 case BIO_C_GET_CONNECT
:
472 pptr
=(const char **)ptr
;
475 *pptr
=data
->param_hostname
;
480 *pptr
=data
->param_port
;
484 *pptr
= (char *)&(data
->ip
[0]);
488 *((int *)ptr
)=data
->port
;
490 if ((!b
->init
) || (ptr
== NULL
))
491 *pptr
="not initalised";
495 case BIO_C_SET_CONNECT
:
501 if (data
->param_hostname
!= NULL
)
502 Free(data
->param_hostname
);
503 data
->param_hostname
=BUF_strdup(ptr
);
507 if (data
->param_port
!= NULL
)
508 Free(data
->param_port
);
509 data
->param_port
=BUF_strdup(ptr
);
515 sprintf(buf
,"%d.%d.%d.%d",
516 ptr
[0],ptr
[1],ptr
[2],ptr
[3]);
517 if (data
->param_hostname
!= NULL
)
518 Free(data
->param_hostname
);
519 data
->param_hostname
=BUF_strdup(buf
);
520 memcpy(&(data
->ip
[0]),ptr
,4);
526 sprintf(buf
,"%d",*(int *)ptr
);
527 if (data
->param_port
!= NULL
)
528 Free(data
->param_port
);
529 data
->param_port
=BUF_strdup(buf
);
530 data
->port
= *(int *)ptr
;
548 case BIO_CTRL_GET_CLOSE
:
551 case BIO_CTRL_SET_CLOSE
:
552 b
->shutdown
=(int)num
;
554 case BIO_CTRL_PENDING
:
555 case BIO_CTRL_WPENDING
:
562 if (data
->param_port
)
563 BIO_set_conn_port(dbio
,data
->param_port
);
564 if (data
->param_hostname
)
565 BIO_set_conn_hostname(dbio
,data
->param_hostname
);
566 BIO_set_nbio(dbio
,data
->nbio
);
567 BIO_set_info_callback(dbio
,data
->info_callback
);
569 case BIO_CTRL_SET_CALLBACK
:
570 data
->info_callback
=(int (*)())ptr
;
572 case BIO_CTRL_GET_CALLBACK
:
576 fptr
=(int (**)())ptr
;
577 *fptr
=data
->info_callback
;
587 static int conn_puts(BIO
*bp
, char *str
)
592 ret
=conn_write(bp
,str
,n
);
596 BIO
*BIO_new_connect(char *str
)
600 ret
=BIO_new(BIO_s_connect());
601 if (ret
== NULL
) return(NULL
);
602 if (BIO_set_conn_hostname(ret
,str
))