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.]
62 #include "internal/cryptlib.h"
63 #include <openssl/bio.h>
65 #ifndef OPENSSL_NO_SOCK
67 # if (defined(OPENSSL_SYS_VMS) && __VMS_VER < 70000000)
68 /* FIONBIO used as a switch to enable ioctl, and that isn't in VMS < 7.0 */
72 typedef struct bio_connect_st
{
79 struct sockaddr_in them
;
81 * int socket; this will be kept in bio->num so that it is compatible
82 * with the bss_sock bio
85 * called when the connection is initially made callback(BIO,state,ret);
86 * The callback should return 'ret'. state is for compatibility with the
89 int (*info_callback
) (const BIO
*bio
, int state
, int ret
);
92 static int conn_write(BIO
*h
, const char *buf
, int num
);
93 static int conn_read(BIO
*h
, char *buf
, int size
);
94 static int conn_puts(BIO
*h
, const char *str
);
95 static long conn_ctrl(BIO
*h
, int cmd
, long arg1
, void *arg2
);
96 static int conn_new(BIO
*h
);
97 static int conn_free(BIO
*data
);
98 static long conn_callback_ctrl(BIO
*h
, int cmd
, bio_info_cb
*);
100 static int conn_state(BIO
*b
, BIO_CONNECT
*c
);
101 static void conn_close_socket(BIO
*data
);
102 BIO_CONNECT
*BIO_CONNECT_new(void);
103 void BIO_CONNECT_free(BIO_CONNECT
*a
);
105 static BIO_METHOD methods_connectp
= {
111 NULL
, /* connect_gets, */
118 static int conn_state(BIO
*b
, BIO_CONNECT
*c
)
123 int (*cb
) (const BIO
*, int, int) = NULL
;
125 if (c
->info_callback
!= NULL
)
126 cb
= c
->info_callback
;
130 case BIO_CONN_S_BEFORE
:
131 p
= c
->param_hostname
;
133 BIOerr(BIO_F_CONN_STATE
, BIO_R_NO_HOSTNAME_SPECIFIED
);
136 for (; *p
!= '\0'; p
++) {
137 if ((*p
== ':') || (*p
== '/'))
142 if ((i
== ':') || (i
== '/')) {
151 OPENSSL_free(c
->param_port
);
152 c
->param_port
= BUF_strdup(p
);
156 if (c
->param_port
== NULL
) {
157 BIOerr(BIO_F_CONN_STATE
, BIO_R_NO_PORT_SPECIFIED
);
158 ERR_add_error_data(2, "host=", c
->param_hostname
);
161 c
->state
= BIO_CONN_S_GET_IP
;
164 case BIO_CONN_S_GET_IP
:
165 if (BIO_get_host_ip(c
->param_hostname
, &(c
->ip
[0])) <= 0)
167 c
->state
= BIO_CONN_S_GET_PORT
;
170 case BIO_CONN_S_GET_PORT
:
171 if (c
->param_port
== NULL
) {
174 } else if (BIO_get_port(c
->param_port
, &c
->port
) <= 0)
176 c
->state
= BIO_CONN_S_CREATE_SOCKET
;
179 case BIO_CONN_S_CREATE_SOCKET
:
180 /* now setup address */
181 memset(&c
->them
, 0, sizeof(c
->them
));
182 c
->them
.sin_family
= AF_INET
;
183 c
->them
.sin_port
= htons((unsigned short)c
->port
);
185 ((unsigned long)c
->ip
[0] << 24L) |
186 ((unsigned long)c
->ip
[1] << 16L) |
187 ((unsigned long)c
->ip
[2] << 8L) | ((unsigned long)c
->ip
[3]);
188 c
->them
.sin_addr
.s_addr
= htonl(l
);
189 c
->state
= BIO_CONN_S_CREATE_SOCKET
;
191 ret
= socket(AF_INET
, SOCK_STREAM
, IPPROTO_TCP
);
192 if (ret
== INVALID_SOCKET
) {
193 SYSerr(SYS_F_SOCKET
, get_last_socket_error());
194 ERR_add_error_data(4, "host=", c
->param_hostname
,
196 BIOerr(BIO_F_CONN_STATE
, BIO_R_UNABLE_TO_CREATE_SOCKET
);
200 c
->state
= BIO_CONN_S_NBIO
;
203 case BIO_CONN_S_NBIO
:
205 if (!BIO_socket_nbio(b
->num
, 1)) {
206 BIOerr(BIO_F_CONN_STATE
, BIO_R_ERROR_SETTING_NBIO
);
207 ERR_add_error_data(4, "host=",
208 c
->param_hostname
, ":", c
->param_port
);
212 c
->state
= BIO_CONN_S_CONNECT
;
214 # if defined(SO_KEEPALIVE)
216 i
= setsockopt(b
->num
, SOL_SOCKET
, SO_KEEPALIVE
, (char *)&i
,
219 SYSerr(SYS_F_SOCKET
, get_last_socket_error());
220 ERR_add_error_data(4, "host=", c
->param_hostname
,
222 BIOerr(BIO_F_CONN_STATE
, BIO_R_KEEPALIVE
);
228 case BIO_CONN_S_CONNECT
:
229 BIO_clear_retry_flags(b
);
230 ret
= connect(b
->num
,
231 (struct sockaddr
*)&c
->them
, sizeof(c
->them
));
234 if (BIO_sock_should_retry(ret
)) {
235 BIO_set_retry_special(b
);
236 c
->state
= BIO_CONN_S_BLOCKED_CONNECT
;
237 b
->retry_reason
= BIO_RR_CONNECT
;
239 SYSerr(SYS_F_CONNECT
, get_last_socket_error());
240 ERR_add_error_data(4, "host=",
241 c
->param_hostname
, ":", c
->param_port
);
242 BIOerr(BIO_F_CONN_STATE
, BIO_R_CONNECT_ERROR
);
246 c
->state
= BIO_CONN_S_OK
;
249 case BIO_CONN_S_BLOCKED_CONNECT
:
250 i
= BIO_sock_error(b
->num
);
252 BIO_clear_retry_flags(b
);
253 SYSerr(SYS_F_CONNECT
, i
);
254 ERR_add_error_data(4, "host=",
255 c
->param_hostname
, ":", c
->param_port
);
256 BIOerr(BIO_F_CONN_STATE
, BIO_R_NBIO_CONNECT_ERROR
);
260 c
->state
= BIO_CONN_S_OK
;
272 if ((ret
= cb((BIO
*)b
, c
->state
, ret
)) == 0)
277 /* Loop does not exit */
280 ret
= cb((BIO
*)b
, c
->state
, ret
);
285 BIO_CONNECT
*BIO_CONNECT_new(void)
289 if ((ret
= OPENSSL_malloc(sizeof(*ret
))) == NULL
)
291 ret
->state
= BIO_CONN_S_BEFORE
;
292 ret
->param_hostname
= NULL
;
293 ret
->param_port
= NULL
;
294 ret
->info_callback
= NULL
;
301 memset(&ret
->them
, 0, sizeof(ret
->them
));
305 void BIO_CONNECT_free(BIO_CONNECT
*a
)
310 OPENSSL_free(a
->param_hostname
);
311 OPENSSL_free(a
->param_port
);
315 BIO_METHOD
*BIO_s_connect(void)
317 return (&methods_connectp
);
320 static int conn_new(BIO
*bi
)
323 bi
->num
= INVALID_SOCKET
;
325 if ((bi
->ptr
= (char *)BIO_CONNECT_new()) == NULL
)
331 static void conn_close_socket(BIO
*bio
)
335 c
= (BIO_CONNECT
*)bio
->ptr
;
336 if (bio
->num
!= INVALID_SOCKET
) {
337 /* Only do a shutdown if things were established */
338 if (c
->state
== BIO_CONN_S_OK
)
339 shutdown(bio
->num
, 2);
340 closesocket(bio
->num
);
341 bio
->num
= INVALID_SOCKET
;
345 static int conn_free(BIO
*a
)
351 data
= (BIO_CONNECT
*)a
->ptr
;
354 conn_close_socket(a
);
355 BIO_CONNECT_free(data
);
363 static int conn_read(BIO
*b
, char *out
, int outl
)
368 data
= (BIO_CONNECT
*)b
->ptr
;
369 if (data
->state
!= BIO_CONN_S_OK
) {
370 ret
= conn_state(b
, data
);
376 clear_socket_error();
377 ret
= readsocket(b
->num
, out
, outl
);
378 BIO_clear_retry_flags(b
);
380 if (BIO_sock_should_retry(ret
))
381 BIO_set_retry_read(b
);
387 static int conn_write(BIO
*b
, const char *in
, int inl
)
392 data
= (BIO_CONNECT
*)b
->ptr
;
393 if (data
->state
!= BIO_CONN_S_OK
) {
394 ret
= conn_state(b
, data
);
399 clear_socket_error();
400 ret
= writesocket(b
->num
, in
, inl
);
401 BIO_clear_retry_flags(b
);
403 if (BIO_sock_should_retry(ret
))
404 BIO_set_retry_write(b
);
409 static long conn_ctrl(BIO
*b
, int cmd
, long num
, void *ptr
)
417 data
= (BIO_CONNECT
*)b
->ptr
;
422 data
->state
= BIO_CONN_S_BEFORE
;
423 conn_close_socket(b
);
426 case BIO_C_DO_STATE_MACHINE
:
427 /* use this one to start the connection */
428 if (data
->state
!= BIO_CONN_S_OK
)
429 ret
= (long)conn_state(b
, data
);
433 case BIO_C_GET_CONNECT
:
435 pptr
= (const char **)ptr
;
437 *pptr
= data
->param_hostname
;
439 } else if (num
== 1) {
440 *pptr
= data
->param_port
;
441 } else if (num
== 2) {
442 *pptr
= (char *)&(data
->ip
[0]);
443 } else if (num
== 3) {
444 *((int *)ptr
) = data
->port
;
446 if ((!b
->init
) || (ptr
== NULL
))
447 *pptr
= "not initialized";
451 case BIO_C_SET_CONNECT
:
455 OPENSSL_free(data
->param_hostname
);
456 data
->param_hostname
= BUF_strdup(ptr
);
457 } else if (num
== 1) {
458 OPENSSL_free(data
->param_port
);
459 data
->param_port
= BUF_strdup(ptr
);
460 } else if (num
== 2) {
462 unsigned char *p
= ptr
;
464 BIO_snprintf(buf
, sizeof buf
, "%d.%d.%d.%d",
465 p
[0], p
[1], p
[2], p
[3]);
466 OPENSSL_free(data
->param_hostname
);
467 data
->param_hostname
= BUF_strdup(buf
);
468 memcpy(&(data
->ip
[0]), ptr
, 4);
469 } else if (num
== 3) {
470 char buf
[DECIMAL_SIZE(int) + 1];
472 BIO_snprintf(buf
, sizeof buf
, "%d", *(int *)ptr
);
473 OPENSSL_free(data
->param_port
);
474 data
->param_port
= BUF_strdup(buf
);
475 data
->port
= *(int *)ptr
;
480 data
->nbio
= (int)num
;
491 case BIO_CTRL_GET_CLOSE
:
494 case BIO_CTRL_SET_CLOSE
:
495 b
->shutdown
= (int)num
;
497 case BIO_CTRL_PENDING
:
498 case BIO_CTRL_WPENDING
:
506 if (data
->param_port
)
507 BIO_set_conn_port(dbio
, data
->param_port
);
508 if (data
->param_hostname
)
509 BIO_set_conn_hostname(dbio
, data
->param_hostname
);
510 BIO_set_nbio(dbio
, data
->nbio
);
512 * FIXME: the cast of the function seems unlikely to be a good
515 (void)BIO_set_info_callback(dbio
,
516 (bio_info_cb
*)data
->info_callback
);
519 case BIO_CTRL_SET_CALLBACK
:
521 # if 0 /* FIXME: Should this be used? -- Richard
523 BIOerr(BIO_F_CONN_CTRL
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
530 case BIO_CTRL_GET_CALLBACK
:
532 int (**fptr
) (const BIO
*bio
, int state
, int xret
);
534 fptr
= (int (**)(const BIO
*bio
, int state
, int xret
))ptr
;
535 *fptr
= data
->info_callback
;
545 static long conn_callback_ctrl(BIO
*b
, int cmd
, bio_info_cb
*fp
)
550 data
= (BIO_CONNECT
*)b
->ptr
;
553 case BIO_CTRL_SET_CALLBACK
:
555 data
->info_callback
=
556 (int (*)(const struct bio_st
*, int, int))fp
;
566 static int conn_puts(BIO
*bp
, const char *str
)
571 ret
= conn_write(bp
, str
, n
);
575 BIO
*BIO_new_connect(const char *str
)
579 ret
= BIO_new(BIO_s_connect());
582 if (BIO_set_conn_hostname(ret
, str
))