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.]
63 #include <openssl/bio.h>
65 #ifndef OPENSSL_NO_SOCK
67 # ifdef OPENSSL_SYS_WIN16
68 # define SOCKET_PROTOCOL 0 /* more microsoft stupidity */
70 # define SOCKET_PROTOCOL IPPROTO_TCP
73 # if (defined(OPENSSL_SYS_VMS) && __VMS_VER < 70000000)
74 /* FIONBIO used as a switch to enable ioctl, and that isn't in VMS < 7.0 */
78 typedef struct bio_accept_st {
86 * If 0, it means normal, if 1, do a connect on bind failure, and if
87 * there is no-one listening, bind with SO_REUSEADDR. If 2, always use
94 static int acpt_write(BIO *h, const char *buf, int num);
95 static int acpt_read(BIO *h, char *buf, int size);
96 static int acpt_puts(BIO *h, const char *str);
97 static long acpt_ctrl(BIO *h, int cmd, long arg1, void *arg2);
98 static int acpt_new(BIO *h);
99 static int acpt_free(BIO *data);
100 static int acpt_state(BIO *b, BIO_ACCEPT *c);
101 static void acpt_close_socket(BIO *data);
102 static BIO_ACCEPT *BIO_ACCEPT_new(void);
103 static void BIO_ACCEPT_free(BIO_ACCEPT *a);
105 # define ACPT_S_BEFORE 1
106 # define ACPT_S_GET_ACCEPT_SOCKET 2
109 static BIO_METHOD methods_acceptp = {
115 NULL, /* connect_gets, */
122 BIO_METHOD *BIO_s_accept(void)
124 return (&methods_acceptp);
127 static int acpt_new(BIO *bi)
132 bi->num = INVALID_SOCKET;
134 if ((ba = BIO_ACCEPT_new()) == NULL)
136 bi->ptr = (char *)ba;
137 ba->state = ACPT_S_BEFORE;
142 static BIO_ACCEPT *BIO_ACCEPT_new(void)
146 if ((ret = (BIO_ACCEPT *)OPENSSL_malloc(sizeof(BIO_ACCEPT))) == NULL)
149 memset(ret, 0, sizeof(BIO_ACCEPT));
150 ret->accept_sock = INVALID_SOCKET;
151 ret->bind_mode = BIO_BIND_NORMAL;
155 static void BIO_ACCEPT_free(BIO_ACCEPT *a)
160 if (a->param_addr != NULL)
161 OPENSSL_free(a->param_addr);
163 OPENSSL_free(a->addr);
164 if (a->bio_chain != NULL)
165 BIO_free(a->bio_chain);
169 static void acpt_close_socket(BIO *bio)
173 c = (BIO_ACCEPT *)bio->ptr;
174 if (c->accept_sock != INVALID_SOCKET) {
175 shutdown(c->accept_sock, 2);
176 closesocket(c->accept_sock);
177 c->accept_sock = INVALID_SOCKET;
178 bio->num = INVALID_SOCKET;
182 static int acpt_free(BIO *a)
188 data = (BIO_ACCEPT *)a->ptr;
191 acpt_close_socket(a);
192 BIO_ACCEPT_free(data);
200 static int acpt_state(BIO *b, BIO_ACCEPT *c)
202 BIO *bio = NULL, *dbio;
209 if (c->param_addr == NULL) {
210 BIOerr(BIO_F_ACPT_STATE, BIO_R_NO_ACCEPT_PORT_SPECIFIED);
213 s = BIO_get_accept_socket(c->param_addr, c->bind_mode);
214 if (s == INVALID_SOCKET)
217 if (c->accept_nbio) {
218 if (!BIO_socket_nbio(s, 1)) {
220 BIOerr(BIO_F_ACPT_STATE,
221 BIO_R_ERROR_SETTING_NBIO_ON_ACCEPT_SOCKET);
227 c->state = ACPT_S_GET_ACCEPT_SOCKET;
230 case ACPT_S_GET_ACCEPT_SOCKET:
231 if (b->next_bio != NULL) {
232 c->state = ACPT_S_OK;
235 BIO_clear_retry_flags(b);
237 i = BIO_accept(c->accept_sock, &(c->addr));
239 /* -2 return means we should retry */
241 BIO_set_retry_special(b);
242 b->retry_reason = BIO_RR_ACCEPT;
249 bio = BIO_new_socket(i, BIO_CLOSE);
253 BIO_set_callback(bio, BIO_get_callback(b));
254 BIO_set_callback_arg(bio, BIO_get_callback_arg(b));
257 if (!BIO_socket_nbio(i, 1)) {
258 BIOerr(BIO_F_ACPT_STATE,
259 BIO_R_ERROR_SETTING_NBIO_ON_ACCEPTED_SOCKET);
265 * If the accept BIO has an bio_chain, we dup it and put the new
268 if (c->bio_chain != NULL) {
269 if ((dbio = BIO_dup_chain(c->bio_chain)) == NULL)
271 if (!BIO_push(dbio, bio))
275 if (BIO_push(b, bio) == NULL)
278 c->state = ACPT_S_OK;
288 if (b->next_bio == NULL) {
289 c->state = ACPT_S_GET_ACCEPT_SOCKET;
301 static int acpt_read(BIO *b, char *out, int outl)
306 BIO_clear_retry_flags(b);
307 data = (BIO_ACCEPT *)b->ptr;
309 while (b->next_bio == NULL) {
310 ret = acpt_state(b, data);
315 ret = BIO_read(b->next_bio, out, outl);
316 BIO_copy_next_retry(b);
320 static int acpt_write(BIO *b, const char *in, int inl)
325 BIO_clear_retry_flags(b);
326 data = (BIO_ACCEPT *)b->ptr;
328 while (b->next_bio == NULL) {
329 ret = acpt_state(b, data);
334 ret = BIO_write(b->next_bio, in, inl);
335 BIO_copy_next_retry(b);
339 static long acpt_ctrl(BIO *b, int cmd, long num, void *ptr)
346 data = (BIO_ACCEPT *)b->ptr;
351 data->state = ACPT_S_BEFORE;
352 acpt_close_socket(b);
355 case BIO_C_DO_STATE_MACHINE:
356 /* use this one to start the connection */
357 ret = (long)acpt_state(b, data);
359 case BIO_C_SET_ACCEPT:
363 if (data->param_addr != NULL)
364 OPENSSL_free(data->param_addr);
365 data->param_addr = BUF_strdup(ptr);
366 } else if (num == 1) {
367 data->accept_nbio = (ptr != NULL);
368 } else if (num == 2) {
369 if (data->bio_chain != NULL)
370 BIO_free(data->bio_chain);
371 data->bio_chain = (BIO *)ptr;
376 data->nbio = (int)num;
380 b->num = *((int *)ptr);
381 data->accept_sock = b->num;
382 data->state = ACPT_S_GET_ACCEPT_SOCKET;
383 b->shutdown = (int)num;
390 *ip = data->accept_sock;
391 ret = data->accept_sock;
395 case BIO_C_GET_ACCEPT:
399 *pp = data->param_addr;
405 case BIO_CTRL_GET_CLOSE:
408 case BIO_CTRL_SET_CLOSE:
409 b->shutdown = (int)num;
411 case BIO_CTRL_PENDING:
412 case BIO_CTRL_WPENDING:
417 case BIO_C_SET_BIND_MODE:
418 data->bind_mode = (int)num;
420 case BIO_C_GET_BIND_MODE:
421 ret = (long)data->bind_mode;
425 if (data->param_port) EAY EAY
426 BIO_set_port(dbio,data->param_port);
427 if (data->param_hostname)
428 BIO_set_hostname(dbio,data->param_hostname);
429 BIO_set_nbio(dbio,data->nbio); */
439 static int acpt_puts(BIO *bp, const char *str)
444 ret = acpt_write(bp, str, n);
448 BIO *BIO_new_accept(char *str)
452 ret = BIO_new(BIO_s_accept());
455 if (BIO_set_accept_port(ret, str))