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 #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
82 /* If 0, it means normal, if 1, do a connect on bind failure,
83 * and if there is no-one listening, bind with SO_REUSEADDR.
84 * If 2, always use SO_REUSEADDR. */
89 static int acpt_write(BIO *h, const char *buf, int num);
90 static int acpt_read(BIO *h, char *buf, int size);
91 static int acpt_puts(BIO *h, const char *str);
92 static long acpt_ctrl(BIO *h, int cmd, long arg1, void *arg2);
93 static int acpt_new(BIO *h);
94 static int acpt_free(BIO *data);
95 static int acpt_state(BIO *b, BIO_ACCEPT *c);
96 static void acpt_close_socket(BIO *data);
97 static BIO_ACCEPT *BIO_ACCEPT_new(void );
98 static void BIO_ACCEPT_free(BIO_ACCEPT *a);
100 #define ACPT_S_BEFORE 1
101 #define ACPT_S_GET_ACCEPT_SOCKET 2
104 static BIO_METHOD methods_acceptp=
111 NULL, /* connect_gets, */
118 BIO_METHOD *BIO_s_accept(void)
120 return(&methods_acceptp);
123 static int acpt_new(BIO *bi)
128 bi->num=INVALID_SOCKET;
130 if ((ba=BIO_ACCEPT_new()) == NULL)
133 ba->state=ACPT_S_BEFORE;
138 static BIO_ACCEPT *BIO_ACCEPT_new(void)
142 if ((ret=(BIO_ACCEPT *)OPENSSL_malloc(sizeof(BIO_ACCEPT))) == NULL)
145 memset(ret,0,sizeof(BIO_ACCEPT));
146 ret->accept_sock=INVALID_SOCKET;
147 ret->bind_mode=BIO_BIND_NORMAL;
151 static void BIO_ACCEPT_free(BIO_ACCEPT *a)
156 if (a->param_addr != NULL) OPENSSL_free(a->param_addr);
157 if (a->addr != NULL) OPENSSL_free(a->addr);
158 if (a->bio_chain != NULL) BIO_free(a->bio_chain);
162 static void acpt_close_socket(BIO *bio)
166 c=(BIO_ACCEPT *)bio->ptr;
167 if (c->accept_sock != INVALID_SOCKET)
169 shutdown(c->accept_sock,2);
170 closesocket(c->accept_sock);
171 c->accept_sock=INVALID_SOCKET;
172 bio->num=INVALID_SOCKET;
176 static int acpt_free(BIO *a)
180 if (a == NULL) return(0);
181 data=(BIO_ACCEPT *)a->ptr;
185 acpt_close_socket(a);
186 BIO_ACCEPT_free(data);
194 static int acpt_state(BIO *b, BIO_ACCEPT *c)
204 if (c->param_addr == NULL)
206 BIOerr(BIO_F_ACPT_STATE,BIO_R_NO_ACCEPT_PORT_SPECIFIED);
209 s=BIO_get_accept_socket(c->param_addr,c->bind_mode);
210 if (s == INVALID_SOCKET)
215 if (!BIO_socket_nbio(s,1))
218 BIOerr(BIO_F_ACPT_STATE,BIO_R_ERROR_SETTING_NBIO_ON_ACCEPT_SOCKET);
224 c->state=ACPT_S_GET_ACCEPT_SOCKET;
227 case ACPT_S_GET_ACCEPT_SOCKET:
228 if (b->next_bio != NULL)
233 BIO_clear_retry_flags(b);
235 i=BIO_accept(c->accept_sock,&(c->addr));
237 /* -2 return means we should retry */
240 BIO_set_retry_special(b);
241 b->retry_reason=BIO_RR_ACCEPT;
245 if (i < 0) return(i);
247 bio=BIO_new_socket(i,BIO_CLOSE);
248 if (bio == NULL) goto err;
250 BIO_set_callback(bio,BIO_get_callback(b));
251 BIO_set_callback_arg(bio,BIO_get_callback_arg(b));
255 if (!BIO_socket_nbio(i,1))
257 BIOerr(BIO_F_ACPT_STATE,BIO_R_ERROR_SETTING_NBIO_ON_ACCEPTED_SOCKET);
262 /* If the accept BIO has an bio_chain, we dup it and
263 * put the new socket at the end. */
264 if (c->bio_chain != NULL)
266 if ((dbio=BIO_dup_chain(c->bio_chain)) == NULL)
268 if (!BIO_push(dbio,bio)) goto err;
271 if (BIO_push(b,bio) == NULL) goto err;
283 if (b->next_bio == NULL)
285 c->state=ACPT_S_GET_ACCEPT_SOCKET;
297 static int acpt_read(BIO *b, char *out, int outl)
302 BIO_clear_retry_flags(b);
303 data=(BIO_ACCEPT *)b->ptr;
305 while (b->next_bio == NULL)
307 ret=acpt_state(b,data);
308 if (ret <= 0) return(ret);
311 ret=BIO_read(b->next_bio,out,outl);
312 BIO_copy_next_retry(b);
316 static int acpt_write(BIO *b, const char *in, int inl)
321 BIO_clear_retry_flags(b);
322 data=(BIO_ACCEPT *)b->ptr;
324 while (b->next_bio == NULL)
326 ret=acpt_state(b,data);
327 if (ret <= 0) return(ret);
330 ret=BIO_write(b->next_bio,in,inl);
331 BIO_copy_next_retry(b);
335 static long acpt_ctrl(BIO *b, int cmd, long num, void *ptr)
342 data=(BIO_ACCEPT *)b->ptr;
348 data->state=ACPT_S_BEFORE;
349 acpt_close_socket(b);
352 case BIO_C_DO_STATE_MACHINE:
353 /* use this one to start the connection */
354 ret=(long)acpt_state(b,data);
356 case BIO_C_SET_ACCEPT:
362 if (data->param_addr != NULL)
363 OPENSSL_free(data->param_addr);
364 data->param_addr=BUF_strdup(ptr);
368 data->accept_nbio=(ptr != NULL);
372 if (data->bio_chain != NULL)
373 BIO_free(data->bio_chain);
374 data->bio_chain=(BIO *)ptr;
383 b->num= *((int *)ptr);
384 data->accept_sock=b->num;
385 data->state=ACPT_S_GET_ACCEPT_SOCKET;
386 b->shutdown=(int)num;
394 *ip=data->accept_sock;
395 ret=data->accept_sock;
400 case BIO_C_GET_ACCEPT:
406 *pp=data->param_addr;
414 case BIO_CTRL_GET_CLOSE:
417 case BIO_CTRL_SET_CLOSE:
418 b->shutdown=(int)num;
420 case BIO_CTRL_PENDING:
421 case BIO_CTRL_WPENDING:
426 case BIO_C_SET_BIND_MODE:
427 data->bind_mode=(int)num;
429 case BIO_C_GET_BIND_MODE:
430 ret=(long)data->bind_mode;
434 if (data->param_port) EAY EAY
435 BIO_set_port(dbio,data->param_port);
436 if (data->param_hostname)
437 BIO_set_hostname(dbio,data->param_hostname);
438 BIO_set_nbio(dbio,data->nbio); */
448 static int acpt_puts(BIO *bp, const char *str)
453 ret=acpt_write(bp,str,n);
457 BIO *BIO_new_accept(const char *str)
461 ret=BIO_new(BIO_s_accept());
462 if (ret == NULL) return(NULL);
463 if (BIO_set_accept_port(ret,str))