1 /* crypto/bio/bss_acpt.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_accept_st
{
80 * If 0, it means normal, if 1, do a connect on bind failure, and if
81 * there is no-one listening, bind with SO_REUSEADDR. If 2, always use
88 static int acpt_write(BIO
*h
, const char *buf
, int num
);
89 static int acpt_read(BIO
*h
, char *buf
, int size
);
90 static int acpt_puts(BIO
*h
, const char *str
);
91 static long acpt_ctrl(BIO
*h
, int cmd
, long arg1
, void *arg2
);
92 static int acpt_new(BIO
*h
);
93 static int acpt_free(BIO
*data
);
94 static int acpt_state(BIO
*b
, BIO_ACCEPT
*c
);
95 static void acpt_close_socket(BIO
*data
);
96 static BIO_ACCEPT
*BIO_ACCEPT_new(void);
97 static void BIO_ACCEPT_free(BIO_ACCEPT
*a
);
99 # define ACPT_S_BEFORE 1
100 # define ACPT_S_GET_ACCEPT_SOCKET 2
103 static BIO_METHOD methods_acceptp
= {
109 NULL
, /* connect_gets, */
116 BIO_METHOD
*BIO_s_accept(void)
118 return (&methods_acceptp
);
121 static int acpt_new(BIO
*bi
)
126 bi
->num
= (int)INVALID_SOCKET
;
128 if ((ba
= BIO_ACCEPT_new()) == NULL
)
130 bi
->ptr
= (char *)ba
;
131 ba
->state
= ACPT_S_BEFORE
;
136 static BIO_ACCEPT
*BIO_ACCEPT_new(void)
140 if ((ret
= OPENSSL_zalloc(sizeof(*ret
))) == NULL
)
142 ret
->accept_sock
= (int)INVALID_SOCKET
;
143 ret
->bind_mode
= BIO_BIND_NORMAL
;
147 static void BIO_ACCEPT_free(BIO_ACCEPT
*a
)
152 OPENSSL_free(a
->param_addr
);
153 OPENSSL_free(a
->addr
);
154 BIO_free(a
->bio_chain
);
158 static void acpt_close_socket(BIO
*bio
)
162 c
= (BIO_ACCEPT
*)bio
->ptr
;
163 if (c
->accept_sock
!= (int)INVALID_SOCKET
) {
164 shutdown(c
->accept_sock
, 2);
165 closesocket(c
->accept_sock
);
166 c
->accept_sock
= (int)INVALID_SOCKET
;
167 bio
->num
= (int)INVALID_SOCKET
;
171 static int acpt_free(BIO
*a
)
177 data
= (BIO_ACCEPT
*)a
->ptr
;
180 acpt_close_socket(a
);
181 BIO_ACCEPT_free(data
);
189 static int acpt_state(BIO
*b
, BIO_ACCEPT
*c
)
191 BIO
*bio
= NULL
, *dbio
;
198 if (c
->param_addr
== NULL
) {
199 BIOerr(BIO_F_ACPT_STATE
, BIO_R_NO_ACCEPT_PORT_SPECIFIED
);
202 s
= BIO_get_accept_socket(c
->param_addr
, c
->bind_mode
);
203 if (s
== (int)INVALID_SOCKET
)
206 if (c
->accept_nbio
) {
207 if (!BIO_socket_nbio(s
, 1)) {
209 BIOerr(BIO_F_ACPT_STATE
,
210 BIO_R_ERROR_SETTING_NBIO_ON_ACCEPT_SOCKET
);
216 c
->state
= ACPT_S_GET_ACCEPT_SOCKET
;
219 case ACPT_S_GET_ACCEPT_SOCKET
:
220 if (b
->next_bio
!= NULL
) {
221 c
->state
= ACPT_S_OK
;
224 BIO_clear_retry_flags(b
);
226 i
= BIO_accept(c
->accept_sock
, &(c
->addr
));
228 /* -2 return means we should retry */
230 BIO_set_retry_special(b
);
231 b
->retry_reason
= BIO_RR_ACCEPT
;
238 bio
= BIO_new_socket(i
, BIO_CLOSE
);
242 BIO_set_callback(bio
, BIO_get_callback(b
));
243 BIO_set_callback_arg(bio
, BIO_get_callback_arg(b
));
246 if (!BIO_socket_nbio(i
, 1)) {
247 BIOerr(BIO_F_ACPT_STATE
,
248 BIO_R_ERROR_SETTING_NBIO_ON_ACCEPTED_SOCKET
);
254 * If the accept BIO has an bio_chain, we dup it and put the new
257 if (c
->bio_chain
!= NULL
) {
258 if ((dbio
= BIO_dup_chain(c
->bio_chain
)) == NULL
)
260 if (!BIO_push(dbio
, bio
))
264 if (BIO_push(b
, bio
) == NULL
)
267 c
->state
= ACPT_S_OK
;
277 if (b
->next_bio
== NULL
) {
278 c
->state
= ACPT_S_GET_ACCEPT_SOCKET
;
290 static int acpt_read(BIO
*b
, char *out
, int outl
)
295 BIO_clear_retry_flags(b
);
296 data
= (BIO_ACCEPT
*)b
->ptr
;
298 while (b
->next_bio
== NULL
) {
299 ret
= acpt_state(b
, data
);
304 ret
= BIO_read(b
->next_bio
, out
, outl
);
305 BIO_copy_next_retry(b
);
309 static int acpt_write(BIO
*b
, const char *in
, int inl
)
314 BIO_clear_retry_flags(b
);
315 data
= (BIO_ACCEPT
*)b
->ptr
;
317 while (b
->next_bio
== NULL
) {
318 ret
= acpt_state(b
, data
);
323 ret
= BIO_write(b
->next_bio
, in
, inl
);
324 BIO_copy_next_retry(b
);
328 static long acpt_ctrl(BIO
*b
, int cmd
, long num
, void *ptr
)
335 data
= (BIO_ACCEPT
*)b
->ptr
;
340 data
->state
= ACPT_S_BEFORE
;
341 acpt_close_socket(b
);
344 case BIO_C_DO_STATE_MACHINE
:
345 /* use this one to start the connection */
346 ret
= (long)acpt_state(b
, data
);
348 case BIO_C_SET_ACCEPT
:
352 OPENSSL_free(data
->param_addr
);
353 data
->param_addr
= OPENSSL_strdup(ptr
);
354 } else if (num
== 1) {
355 data
->accept_nbio
= (ptr
!= NULL
);
356 } else if (num
== 2) {
357 BIO_free(data
->bio_chain
);
358 data
->bio_chain
= (BIO
*)ptr
;
363 data
->nbio
= (int)num
;
367 b
->num
= *((int *)ptr
);
368 data
->accept_sock
= b
->num
;
369 data
->state
= ACPT_S_GET_ACCEPT_SOCKET
;
370 b
->shutdown
= (int)num
;
377 *ip
= data
->accept_sock
;
378 ret
= data
->accept_sock
;
382 case BIO_C_GET_ACCEPT
:
386 *pp
= data
->param_addr
;
392 case BIO_CTRL_GET_CLOSE
:
395 case BIO_CTRL_SET_CLOSE
:
396 b
->shutdown
= (int)num
;
398 case BIO_CTRL_PENDING
:
399 case BIO_CTRL_WPENDING
:
404 case BIO_C_SET_BIND_MODE
:
405 data
->bind_mode
= (int)num
;
407 case BIO_C_GET_BIND_MODE
:
408 ret
= (long)data
->bind_mode
;
412 if (data->param_port) EAY EAY
413 BIO_set_port(dbio,data->param_port);
414 if (data->param_hostname)
415 BIO_set_hostname(dbio,data->param_hostname);
416 BIO_set_nbio(dbio,data->nbio); */
426 static int acpt_puts(BIO
*bp
, const char *str
)
431 ret
= acpt_write(bp
, str
, n
);
435 BIO
*BIO_new_accept(const char *str
)
439 ret
= BIO_new(BIO_s_accept());
442 if (BIO_set_accept_port(ret
, str
))