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.]
59
#ifndef OPENSSL_NO_SOCK
65
#include <openssl/bio.h>
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
88
/* If 0, it means normal, if 1, do a connect on bind failure,
89
* and if there is no-one listening, bind with SO_REUSEADDR.
90
* If 2, always use SO_REUSEADDR. */
95
static int acpt_write(BIO *h, const char *buf, int num);
96
static int acpt_read(BIO *h, char *buf, int size);
97
static int acpt_puts(BIO *h, const char *str);
98
static long acpt_ctrl(BIO *h, int cmd, long arg1, void *arg2);
99
static int acpt_new(BIO *h);
100
static int acpt_free(BIO *data);
101
static int acpt_state(BIO *b, BIO_ACCEPT *c);
102
static void acpt_close_socket(BIO *data);
103
BIO_ACCEPT *BIO_ACCEPT_new(void );
104
void BIO_ACCEPT_free(BIO_ACCEPT *a);
106
#define ACPT_S_BEFORE 1
107
#define ACPT_S_GET_ACCEPT_SOCKET 2
110
static BIO_METHOD methods_acceptp=
117
NULL, /* connect_gets, */
124
BIO_METHOD *BIO_s_accept(void)
126
return(&methods_acceptp);
129
static int acpt_new(BIO *bi)
134
bi->num=INVALID_SOCKET;
136
if ((ba=BIO_ACCEPT_new()) == NULL)
139
ba->state=ACPT_S_BEFORE;
144
BIO_ACCEPT *BIO_ACCEPT_new(void)
148
if ((ret=(BIO_ACCEPT *)OPENSSL_malloc(sizeof(BIO_ACCEPT))) == NULL)
151
memset(ret,0,sizeof(BIO_ACCEPT));
152
ret->accept_sock=INVALID_SOCKET;
153
ret->bind_mode=BIO_BIND_NORMAL;
157
void BIO_ACCEPT_free(BIO_ACCEPT *a)
162
if (a->param_addr != NULL) OPENSSL_free(a->param_addr);
163
if (a->addr != NULL) OPENSSL_free(a->addr);
164
if (a->bio_chain != NULL) BIO_free(a->bio_chain);
168
static void acpt_close_socket(BIO *bio)
172
c=(BIO_ACCEPT *)bio->ptr;
173
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)
186
if (a == NULL) return(0);
187
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)
210
if (c->param_addr == NULL)
212
BIOerr(BIO_F_ACPT_STATE,BIO_R_NO_ACCEPT_PORT_SPECIFIED);
215
s=BIO_get_accept_socket(c->param_addr,c->bind_mode);
216
if (s == INVALID_SOCKET)
221
if (!BIO_socket_nbio(s,1))
224
BIOerr(BIO_F_ACPT_STATE,BIO_R_ERROR_SETTING_NBIO_ON_ACCEPT_SOCKET);
230
c->state=ACPT_S_GET_ACCEPT_SOCKET;
233
case ACPT_S_GET_ACCEPT_SOCKET:
234
if (b->next_bio != NULL)
239
BIO_clear_retry_flags(b);
241
i=BIO_accept(c->accept_sock,&(c->addr));
243
/* -2 return means we should retry */
246
BIO_set_retry_special(b);
247
b->retry_reason=BIO_RR_ACCEPT;
251
if (i < 0) return(i);
253
bio=BIO_new_socket(i,BIO_CLOSE);
254
if (bio == NULL) goto err;
256
BIO_set_callback(bio,BIO_get_callback(b));
257
BIO_set_callback_arg(bio,BIO_get_callback_arg(b));
261
if (!BIO_socket_nbio(i,1))
263
BIOerr(BIO_F_ACPT_STATE,BIO_R_ERROR_SETTING_NBIO_ON_ACCEPTED_SOCKET);
268
/* If the accept BIO has an bio_chain, we dup it and
269
* put the new socket at the end. */
270
if (c->bio_chain != NULL)
272
if ((dbio=BIO_dup_chain(c->bio_chain)) == NULL)
274
if (!BIO_push(dbio,bio)) goto err;
277
if (BIO_push(b,bio) == NULL) goto err;
289
if (b->next_bio == NULL)
291
c->state=ACPT_S_GET_ACCEPT_SOCKET;
303
static int acpt_read(BIO *b, char *out, int outl)
308
BIO_clear_retry_flags(b);
309
data=(BIO_ACCEPT *)b->ptr;
311
while (b->next_bio == NULL)
313
ret=acpt_state(b,data);
314
if (ret <= 0) return(ret);
317
ret=BIO_read(b->next_bio,out,outl);
318
BIO_copy_next_retry(b);
322
static int acpt_write(BIO *b, const char *in, int inl)
327
BIO_clear_retry_flags(b);
328
data=(BIO_ACCEPT *)b->ptr;
330
while (b->next_bio == NULL)
332
ret=acpt_state(b,data);
333
if (ret <= 0) return(ret);
336
ret=BIO_write(b->next_bio,in,inl);
337
BIO_copy_next_retry(b);
341
static long acpt_ctrl(BIO *b, int cmd, long num, void *ptr)
349
data=(BIO_ACCEPT *)b->ptr;
355
data->state=ACPT_S_BEFORE;
356
acpt_close_socket(b);
359
case BIO_C_DO_STATE_MACHINE:
360
/* use this one to start the connection */
361
ret=(long)acpt_state(b,data);
363
case BIO_C_SET_ACCEPT:
369
if (data->param_addr != NULL)
370
OPENSSL_free(data->param_addr);
371
data->param_addr=BUF_strdup(ptr);
375
data->accept_nbio=(ptr != NULL);
379
if (data->bio_chain != NULL)
380
BIO_free(data->bio_chain);
381
data->bio_chain=(BIO *)ptr;
390
b->num= *((int *)ptr);
391
data->accept_sock=b->num;
392
data->state=ACPT_S_GET_ACCEPT_SOCKET;
393
b->shutdown=(int)num;
401
*ip=data->accept_sock;
402
ret=data->accept_sock;
407
case BIO_C_GET_ACCEPT:
413
*pp=data->param_addr;
421
case BIO_CTRL_GET_CLOSE:
424
case BIO_CTRL_SET_CLOSE:
425
b->shutdown=(int)num;
427
case BIO_CTRL_PENDING:
428
case BIO_CTRL_WPENDING:
433
case BIO_C_SET_BIND_MODE:
434
data->bind_mode=(int)num;
436
case BIO_C_GET_BIND_MODE:
437
ret=(long)data->bind_mode;
441
/* if (data->param_port) EAY EAY
442
BIO_set_port(dbio,data->param_port);
443
if (data->param_hostname)
444
BIO_set_hostname(dbio,data->param_hostname);
445
BIO_set_nbio(dbio,data->nbio); */
455
static int acpt_puts(BIO *bp, const char *str)
460
ret=acpt_write(bp,str,n);
464
BIO *BIO_new_accept(char *str)
468
ret=BIO_new(BIO_s_accept());
469
if (ret == NULL) return(NULL);
470
if (BIO_set_accept_port(ret,str))