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.]
67 /* BIOerr(BIO_F_WSASTARTUP,BIO_R_WSASTARTUP ); */
70 #define SOCKET_PROTOCOL 0 /* more microsoft stupidity */
72 #define SOCKET_PROTOCOL IPPROTO_TCP
75 typedef struct bio_accept_st
85 /* If 0, it means normal, if 1, do a connect on bind failure,
86 * and if there is no-one listening, bind with SO_REUSEADDR.
87 * If 2, always use SO_REUSEADDR. */
93 static int acpt_write(BIO
*h
,char *buf
,int num
);
94 static int acpt_read(BIO
*h
,char *buf
,int size
);
95 static int acpt_puts(BIO
*h
,char *str
);
96 static long acpt_ctrl(BIO
*h
,int cmd
,long arg1
,char *arg2
);
97 static int acpt_new(BIO
*h
);
98 static int acpt_free(BIO
*data
);
100 static int acpt_write();
101 static int acpt_read();
102 static int acpt_puts();
103 static long acpt_ctrl();
104 static int acpt_new();
105 static int acpt_free();
109 static int acpt_state(BIO
*b
, BIO_ACCEPT
*c
);
110 static void acpt_close_socket(BIO
*data
);
111 BIO_ACCEPT
*BIO_ACCEPT_new(void );
112 void BIO_ACCEPT_free(BIO_ACCEPT
*a
);
116 static int acpt_state();
117 static void acpt_close_socket();
118 BIO_ACCEPT
*BIO_ACCEPT_new();
119 void BIO_ACCEPT_free();
122 #define ACPT_S_BEFORE 1
123 #define ACPT_S_GET_ACCEPT_SOCKET 2
126 static BIO_METHOD methods_acceptp
=
133 NULL
, /* connect_gets, */
139 BIO_METHOD
*BIO_s_accept(void)
141 return(&methods_acceptp
);
144 static int acpt_new(BIO
*bi
)
149 bi
->num
=INVALID_SOCKET
;
151 if ((ba
=BIO_ACCEPT_new()) == NULL
)
154 ba
->state
=ACPT_S_BEFORE
;
159 BIO_ACCEPT
*BIO_ACCEPT_new(void)
163 if ((ret
=(BIO_ACCEPT
*)Malloc(sizeof(BIO_ACCEPT
))) == NULL
)
166 memset(ret
,0,sizeof(BIO_ACCEPT
));
167 ret
->accept_sock
=INVALID_SOCKET
;
168 ret
->bind_mode
=BIO_BIND_NORMAL
;
172 void BIO_ACCEPT_free(BIO_ACCEPT
*a
)
177 if (a
->param_addr
!= NULL
) Free(a
->param_addr
);
178 if (a
->addr
!= NULL
) Free(a
->addr
);
179 if (a
->bio_chain
!= NULL
) BIO_free(a
->bio_chain
);
183 static void acpt_close_socket(BIO
*bio
)
187 c
=(BIO_ACCEPT
*)bio
->ptr
;
188 if (c
->accept_sock
!= INVALID_SOCKET
)
190 shutdown(c
->accept_sock
,2);
191 closesocket(c
->accept_sock
);
192 c
->accept_sock
=INVALID_SOCKET
;
193 bio
->num
=INVALID_SOCKET
;
197 static int acpt_free(BIO
*a
)
201 if (a
== NULL
) return(0);
202 data
=(BIO_ACCEPT
*)a
->ptr
;
206 acpt_close_socket(a
);
207 BIO_ACCEPT_free(data
);
215 static int acpt_state(BIO
*b
, BIO_ACCEPT
*c
)
225 if (c
->param_addr
== NULL
)
227 BIOerr(BIO_F_ACPT_STATE
,BIO_R_NO_ACCEPT_PORT_SPECIFIED
);
230 s
=BIO_get_accept_socket(c
->param_addr
,c
->bind_mode
);
231 if (s
== INVALID_SOCKET
)
236 if (!BIO_socket_nbio(s
,1))
239 BIOerr(BIO_F_ACPT_STATE
,BIO_R_ERROR_SETTING_NBIO_ON_ACCEPT_SOCKET
);
245 c
->state
=ACPT_S_GET_ACCEPT_SOCKET
;
248 case ACPT_S_GET_ACCEPT_SOCKET
:
249 if (b
->next_bio
!= NULL
)
254 i
=BIO_accept(c
->accept_sock
,&(c
->addr
));
255 if (i
< 0) return(i
);
256 bio
=BIO_new_socket(i
,BIO_CLOSE
);
257 if (bio
== NULL
) goto err
;
259 BIO_set_callback(bio
,BIO_get_callback(b
));
260 BIO_set_callback_arg(bio
,BIO_get_callback_arg(b
));
264 if (!BIO_socket_nbio(i
,1))
266 BIOerr(BIO_F_ACPT_STATE
,BIO_R_ERROR_SETTING_NBIO_ON_ACCEPTED_SOCKET
);
271 /* If the accept BIO has an bio_chain, we dup it and
272 * put the new socket at the end. */
273 if (c
->bio_chain
!= NULL
)
275 if ((dbio
=BIO_dup_chain(c
->bio_chain
)) == NULL
)
277 if (!BIO_push(dbio
,bio
)) goto err
;
280 if (BIO_push(b
,bio
) == NULL
) goto err
;
292 if (b
->next_bio
== NULL
)
294 c
->state
=ACPT_S_GET_ACCEPT_SOCKET
;
306 static int acpt_read(BIO
*b
, char *out
, int outl
)
311 BIO_clear_retry_flags(b
);
312 data
=(BIO_ACCEPT
*)b
->ptr
;
314 while (b
->next_bio
== NULL
)
316 ret
=acpt_state(b
,data
);
317 if (ret
<= 0) return(ret
);
320 ret
=BIO_read(b
->next_bio
,out
,outl
);
321 BIO_copy_next_retry(b
);
325 static int acpt_write(BIO
*b
, char *in
, int inl
)
330 BIO_clear_retry_flags(b
);
331 data
=(BIO_ACCEPT
*)b
->ptr
;
333 while (b
->next_bio
== NULL
)
335 ret
=acpt_state(b
,data
);
336 if (ret
<= 0) return(ret
);
339 ret
=BIO_write(b
->next_bio
,in
,inl
);
340 BIO_copy_next_retry(b
);
344 static long acpt_ctrl(BIO
*b
, int cmd
, long num
, char *ptr
)
352 data
=(BIO_ACCEPT
*)b
->ptr
;
358 data
->state
=ACPT_S_BEFORE
;
359 acpt_close_socket(b
);
362 case BIO_C_DO_STATE_MACHINE
:
363 /* use this one to start the connection */
364 ret
=(long)acpt_state(b
,data
);
366 case BIO_C_SET_ACCEPT
:
372 if (data
->param_addr
!= NULL
)
373 Free(data
->param_addr
);
374 data
->param_addr
=BUF_strdup(ptr
);
378 data
->accept_nbio
=(ptr
!= NULL
);
382 if (data
->bio_chain
!= NULL
)
383 BIO_free(data
->bio_chain
);
384 data
->bio_chain
=(BIO
*)ptr
;
393 b
->num
= *((int *)ptr
);
394 data
->accept_sock
=b
->num
;
395 data
->state
=ACPT_S_GET_ACCEPT_SOCKET
;
396 b
->shutdown
=(int)num
;
404 *ip
=data
->accept_sock
;
405 ret
=data
->accept_sock
;
410 case BIO_C_GET_ACCEPT
:
416 *pp
=data
->param_addr
;
424 case BIO_CTRL_GET_CLOSE
:
427 case BIO_CTRL_SET_CLOSE
:
428 b
->shutdown
=(int)num
;
430 case BIO_CTRL_PENDING
:
431 case BIO_CTRL_WPENDING
:
436 case BIO_C_SET_BIND_MODE
:
437 data
->bind_mode
=(int)num
;
439 case BIO_C_GET_BIND_MODE
:
440 ret
=(long)data
->bind_mode
;
444 /* if (data->param_port) EAY EAY
445 BIO_set_port(dbio,data->param_port);
446 if (data->param_hostname)
447 BIO_set_hostname(dbio,data->param_hostname);
448 BIO_set_nbio(dbio,data->nbio); */
458 static int acpt_puts(BIO
*bp
, char *str
)
463 ret
=acpt_write(bp
,str
,n
);
467 BIO
*BIO_new_accept(char *str
)
471 ret
=BIO_new(BIO_s_accept());
472 if (ret
== NULL
) return(NULL
);
473 if (BIO_set_accept_port(ret
,str
))