[thirdparty/openssl.git] / crypto / bio / bss_acpt.c

/* crypto/bio/bss_acpt.c */
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
 * All rights reserved.
 *
 * This package is an SSL implementation written
 * by Eric Young (eay@cryptsoft.com).
 * The implementation was written so as to conform with Netscapes SSL.
 * 
 * This library is free for commercial and non-commercial use as long as
 * the following conditions are aheared to.  The following conditions
 * apply to all code found in this distribution, be it the RC4, RSA,
 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
 * included with this distribution is covered by the same copyright terms
 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
 * 
 * Copyright remains Eric Young's, and as such any Copyright notices in
 * the code are not to be removed.
 * If this package is used in a product, Eric Young should be given attribution
 * as the author of the parts of the library used.
 * This can be in the form of a textual message at program startup or
 * in documentation (online or textual) provided with the package.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *    "This product includes cryptographic software written by
 *     Eric Young (eay@cryptsoft.com)"
 *    The word 'cryptographic' can be left out if the rouines from the library
 *    being used are not cryptographic related :-).
 * 4. If you include any Windows specific code (or a derivative thereof) from 
 *    the apps directory (application code) you must include an acknowledgement:
 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
 * 
 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * 
 * The licence and distribution terms for any publically available version or
 * derivative of this code cannot be changed.  i.e. this code cannot simply be
 * copied and put under another distribution licence
 * [including the GNU Public Licence.]
 */

#ifndef NO_SOCK

#include <stdio.h>
#include <errno.h>
#define USE_SOCKETS
#include "cryptlib.h"
#include <openssl/bio.h>

#ifdef WIN16
#define SOCKET_PROTOCOL 0 /* more microsoft stupidity */
#else
#define SOCKET_PROTOCOL IPPROTO_TCP
#endif

#if (defined(VMS) && __VMS_VER < 70000000)
/* FIONBIO used as a switch to enable ioctl, and that isn't in VMS < 7.0 */
#undef FIONBIO
#endif

typedef struct bio_accept_st
	{
	int state;
	char *param_addr;

	int accept_sock;
	int accept_nbio;

	char *addr;
	int nbio;
	/* If 0, it means normal, if 1, do a connect on bind failure,
	 * and if there is no-one listening, bind with SO_REUSEADDR.
	 * If 2, always use SO_REUSEADDR. */
	int bind_mode;
	BIO *bio_chain;
	} BIO_ACCEPT;

static int acpt_write(BIO *h,char *buf,int num);
static int acpt_read(BIO *h,char *buf,int size);
static int acpt_puts(BIO *h,char *str);
static long acpt_ctrl(BIO *h,int cmd,long arg1,char *arg2);
static int acpt_new(BIO *h);
static int acpt_free(BIO *data);
static int acpt_state(BIO *b, BIO_ACCEPT *c);
static void acpt_close_socket(BIO *data);
BIO_ACCEPT *BIO_ACCEPT_new(void );
void BIO_ACCEPT_free(BIO_ACCEPT *a);

#define ACPT_S_BEFORE			1
#define ACPT_S_GET_ACCEPT_SOCKET	2
#define ACPT_S_OK			3

static BIO_METHOD methods_acceptp=
	{
	BIO_TYPE_ACCEPT,
	"socket accept",
	acpt_write,
	acpt_read,
	acpt_puts,
	NULL, /* connect_gets, */
	acpt_ctrl,
	acpt_new,
	acpt_free,
	};

BIO_METHOD *BIO_s_accept(void)
	{
	return(&methods_acceptp);
	}

static int acpt_new(BIO *bi)
	{
	BIO_ACCEPT *ba;

	bi->init=0;
	bi->num=INVALID_SOCKET;
	bi->flags=0;
	if ((ba=BIO_ACCEPT_new()) == NULL)
		return(0);
	bi->ptr=(char *)ba;
	ba->state=ACPT_S_BEFORE;
	bi->shutdown=1;
	return(1);
	}

BIO_ACCEPT *BIO_ACCEPT_new(void)
	{
	BIO_ACCEPT *ret;

	if ((ret=(BIO_ACCEPT *)Malloc(sizeof(BIO_ACCEPT))) == NULL)
		return(NULL);

	memset(ret,0,sizeof(BIO_ACCEPT));
	ret->accept_sock=INVALID_SOCKET;
	ret->bind_mode=BIO_BIND_NORMAL;
	return(ret);
	}

void BIO_ACCEPT_free(BIO_ACCEPT *a)
	{
	if(a == NULL)
	    return;

	if (a->param_addr != NULL) Free(a->param_addr);
	if (a->addr != NULL) Free(a->addr);
	if (a->bio_chain != NULL) BIO_free(a->bio_chain);
	Free(a);
	}

static void acpt_close_socket(BIO *bio)
	{
	BIO_ACCEPT *c;

	c=(BIO_ACCEPT *)bio->ptr;
	if (c->accept_sock != INVALID_SOCKET)
		{
		shutdown(c->accept_sock,2);
		closesocket(c->accept_sock);
		c->accept_sock=INVALID_SOCKET;
		bio->num=INVALID_SOCKET;
		}
	}

static int acpt_free(BIO *a)
	{
	BIO_ACCEPT *data;

	if (a == NULL) return(0);
	data=(BIO_ACCEPT *)a->ptr;
	 
	if (a->shutdown)
		{
		acpt_close_socket(a);
		BIO_ACCEPT_free(data);
		a->ptr=NULL;
		a->flags=0;
		a->init=0;
		}
	return(1);
	}
	
static int acpt_state(BIO *b, BIO_ACCEPT *c)
	{
	BIO *bio=NULL,*dbio;
	int s= -1;
	int i;

again:
	switch (c->state)
		{
	case ACPT_S_BEFORE:
		if (c->param_addr == NULL)
			{
			BIOerr(BIO_F_ACPT_STATE,BIO_R_NO_ACCEPT_PORT_SPECIFIED);
			return(-1);
			}
		s=BIO_get_accept_socket(c->param_addr,c->bind_mode);
		if (s == INVALID_SOCKET)
			return(-1);

		if (c->accept_nbio)
			{
			if (!BIO_socket_nbio(s,1))
				{
				closesocket(s);
				BIOerr(BIO_F_ACPT_STATE,BIO_R_ERROR_SETTING_NBIO_ON_ACCEPT_SOCKET);
				return(-1);
				}
			}
		c->accept_sock=s;
		b->num=s;
		c->state=ACPT_S_GET_ACCEPT_SOCKET;
		return(1);
		/* break; */
	case ACPT_S_GET_ACCEPT_SOCKET:
		if (b->next_bio != NULL)
			{
			c->state=ACPT_S_OK;
			goto again;
			}
		i=BIO_accept(c->accept_sock,&(c->addr));
		if (i < 0) return(i);
		bio=BIO_new_socket(i,BIO_CLOSE);
		if (bio == NULL) goto err;

		BIO_set_callback(bio,BIO_get_callback(b));
		BIO_set_callback_arg(bio,BIO_get_callback_arg(b));

		if (c->nbio)
			{
			if (!BIO_socket_nbio(i,1))
				{
				BIOerr(BIO_F_ACPT_STATE,BIO_R_ERROR_SETTING_NBIO_ON_ACCEPTED_SOCKET);
				goto err;
				}
			}

		/* If the accept BIO has an bio_chain, we dup it and
		 * put the new socket at the end. */
		if (c->bio_chain != NULL)
			{
			if ((dbio=BIO_dup_chain(c->bio_chain)) == NULL)
				goto err;
			if (!BIO_push(dbio,bio)) goto err;
			bio=dbio;
			}
		if (BIO_push(b,bio) == NULL) goto err;

		c->state=ACPT_S_OK;
		return(1);
err:
		if (bio != NULL)
			BIO_free(bio);
		else if (s >= 0)
			closesocket(s);
		return(0);
		/* break; */
	case ACPT_S_OK:
		if (b->next_bio == NULL)
			{
			c->state=ACPT_S_GET_ACCEPT_SOCKET;
			goto again;
			}
		return(1);
		/* break; */
	default:	
		return(0);
		/* break; */
		}

	}

static int acpt_read(BIO *b, char *out, int outl)
	{
	int ret=0;
	BIO_ACCEPT *data;

	BIO_clear_retry_flags(b);
	data=(BIO_ACCEPT *)b->ptr;

	while (b->next_bio == NULL)
		{
		ret=acpt_state(b,data);
		if (ret <= 0) return(ret);
		}

	ret=BIO_read(b->next_bio,out,outl);
	BIO_copy_next_retry(b);
	return(ret);
	}

static int acpt_write(BIO *b, char *in, int inl)
	{
	int ret;
	BIO_ACCEPT *data;

	BIO_clear_retry_flags(b);
	data=(BIO_ACCEPT *)b->ptr;

	while (b->next_bio == NULL)
		{
		ret=acpt_state(b,data);
		if (ret <= 0) return(ret);
		}

	ret=BIO_write(b->next_bio,in,inl);
	BIO_copy_next_retry(b);
	return(ret);
	}

static long acpt_ctrl(BIO *b, int cmd, long num, char *ptr)
	{
	BIO *dbio;
	int *ip;
	long ret=1;
	BIO_ACCEPT *data;
	char **pp;

	data=(BIO_ACCEPT *)b->ptr;

	switch (cmd)
		{
	case BIO_CTRL_RESET:
		ret=0;
		data->state=ACPT_S_BEFORE;
		acpt_close_socket(b);
		b->flags=0;
		break;
	case BIO_C_DO_STATE_MACHINE:
		/* use this one to start the connection */
		ret=(long)acpt_state(b,data);
		break;
	case BIO_C_SET_ACCEPT:
		if (ptr != NULL)
			{
			if (num == 0)
				{
				b->init=1;
				if (data->param_addr != NULL)
					Free(data->param_addr);
				data->param_addr=BUF_strdup(ptr);
				}
			else if (num == 1)
				{
				data->accept_nbio=(ptr != NULL);
				}
			else if (num == 2)
				{
				if (data->bio_chain != NULL)
					BIO_free(data->bio_chain);
				data->bio_chain=(BIO *)ptr;
				}
			}
		break;
	case BIO_C_SET_NBIO:
		data->nbio=(int)num;
		break;
	case BIO_C_SET_FD:
		b->init=1;
		b->num= *((int *)ptr);
		data->accept_sock=b->num;
		data->state=ACPT_S_GET_ACCEPT_SOCKET;
		b->shutdown=(int)num;
		b->init=1;
		break;
	case BIO_C_GET_FD:
		if (b->init)
			{
			ip=(int *)ptr;
			if (ip != NULL)
				*ip=data->accept_sock;
			ret=data->accept_sock;
			}
		else
			ret= -1;
		break;
	case BIO_C_GET_ACCEPT:
		if (b->init)
			{
			if (ptr != NULL)
				{
				pp=(char **)ptr;
				*pp=data->param_addr;
				}
			else
				ret= -1;
			}
		else
			ret= -1;
		break;
	case BIO_CTRL_GET_CLOSE:
		ret=b->shutdown;
		break;
	case BIO_CTRL_SET_CLOSE:
		b->shutdown=(int)num;
		break;
	case BIO_CTRL_PENDING:
	case BIO_CTRL_WPENDING:
		ret=0;
		break;
	case BIO_CTRL_FLUSH:
		break;
	case BIO_C_SET_BIND_MODE:
		data->bind_mode=(int)num;
		break;
	case BIO_C_GET_BIND_MODE:
		ret=(long)data->bind_mode;
		break;
	case BIO_CTRL_DUP:
		dbio=(BIO *)ptr;
/*		if (data->param_port) EAY EAY
			BIO_set_port(dbio,data->param_port);
		if (data->param_hostname)
			BIO_set_hostname(dbio,data->param_hostname);
		BIO_set_nbio(dbio,data->nbio); */
		break;

	default:
		ret=0;
		break;
		}
	return(ret);
	}

static int acpt_puts(BIO *bp, char *str)
	{
	int n,ret;

	n=strlen(str);
	ret=acpt_write(bp,str,n);
	return(ret);
	}

BIO *BIO_new_accept(char *str)
	{
	BIO *ret;

	ret=BIO_new(BIO_s_accept());
	if (ret == NULL) return(NULL);
	if (BIO_set_accept_port(ret,str))
		return(ret);
	else
		{
		BIO_free(ret);
		return(NULL);
		}
	}

#endif
Commit	Line	Data
d02b48c6	1	/* crypto/bio/bss_acpt.c */
58964a49	2	/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
d02b48c6 RE	3	* All rights reserved.
	4	*
	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.
	8	*
	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).
	15	*
	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.
	22	*
	23	* Redistribution and use in source and binary forms, with or without
	24	* modification, are permitted provided that the following conditions
	25	* are met:
	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)"
	40	*
	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
	51	* SUCH DAMAGE.
	52	*
	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.]
	57	*/
	58
	59	#ifndef NO_SOCK
	60
	61	#include <stdio.h>
	62	#include <errno.h>
	63	#define USE_SOCKETS
	64	#include "cryptlib.h"
ec577822	65	#include <openssl/bio.h>
d02b48c6	66
d02b48c6 RE	67	#ifdef WIN16
	68	#define SOCKET_PROTOCOL 0 /* more microsoft stupidity */
	69	#else
	70	#define SOCKET_PROTOCOL IPPROTO_TCP
	71	#endif
	72
75e0770d UM	73	#if (defined(VMS) && __VMS_VER < 70000000)
75e0770d UM	74	/* FIONBIO used as a switch to enable ioctl, and that isn't in VMS < 7.0 */
7d7d2cbc UM	75	#undef FIONBIO
	76	#endif
	77
d02b48c6 RE	78	typedef struct bio_accept_st
	79	{
	80	int state;
	81	char *param_addr;
	82
	83	int accept_sock;
	84	int accept_nbio;
	85
	86	char *addr;
	87	int nbio;
dfeab068 RE	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. */
	91	int bind_mode;
d02b48c6 RE	92	BIO *bio_chain;
	93	} BIO_ACCEPT;
	94
d02b48c6 RE	95	static int acpt_write(BIO h,char buf,int num);
	96	static int acpt_read(BIO h,char buf,int size);
	97	static int acpt_puts(BIO h,char str);
	98	static long acpt_ctrl(BIO h,int cmd,long arg1,char arg2);
	99	static int acpt_new(BIO *h);
	100	static int acpt_free(BIO *data);
d02b48c6 RE	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);
	105
d02b48c6 RE	106	#define ACPT_S_BEFORE 1
	107	#define ACPT_S_GET_ACCEPT_SOCKET 2
	108	#define ACPT_S_OK 3
	109
	110	static BIO_METHOD methods_acceptp=
	111	{
58964a49 RE	112	BIO_TYPE_ACCEPT,
58964a49 RE	113	"socket accept",
d02b48c6 RE	114	acpt_write,
	115	acpt_read,
	116	acpt_puts,
	117	NULL, /* connect_gets, */
	118	acpt_ctrl,
	119	acpt_new,
	120	acpt_free,
	121	};
	122
6b691a5c	123	BIO_METHOD *BIO_s_accept(void)
d02b48c6 RE	124	{
	125	return(&methods_acceptp);
	126	}
	127
6b691a5c	128	static int acpt_new(BIO *bi)
d02b48c6 RE	129	{
	130	BIO_ACCEPT *ba;
	131
	132	bi->init=0;
	133	bi->num=INVALID_SOCKET;
	134	bi->flags=0;
	135	if ((ba=BIO_ACCEPT_new()) == NULL)
	136	return(0);
	137	bi->ptr=(char *)ba;
	138	ba->state=ACPT_S_BEFORE;
	139	bi->shutdown=1;
	140	return(1);
	141	}
	142
6b691a5c	143	BIO_ACCEPT *BIO_ACCEPT_new(void)
d02b48c6 RE	144	{
	145	BIO_ACCEPT *ret;
	146
	147	if ((ret=(BIO_ACCEPT *)Malloc(sizeof(BIO_ACCEPT))) == NULL)
	148	return(NULL);
	149
	150	memset(ret,0,sizeof(BIO_ACCEPT));
	151	ret->accept_sock=INVALID_SOCKET;
dfeab068	152	ret->bind_mode=BIO_BIND_NORMAL;
d02b48c6 RE	153	return(ret);
	154	}
	155
6b691a5c	156	void BIO_ACCEPT_free(BIO_ACCEPT *a)
d02b48c6	157	{
e03ddfae BL	158	if(a == NULL)
	159	return;
	160
d02b48c6 RE	161	if (a->param_addr != NULL) Free(a->param_addr);
	162	if (a->addr != NULL) Free(a->addr);
	163	if (a->bio_chain != NULL) BIO_free(a->bio_chain);
	164	Free(a);
	165	}
	166
6b691a5c	167	static void acpt_close_socket(BIO *bio)
d02b48c6 RE	168	{
	169	BIO_ACCEPT *c;
	170
	171	c=(BIO_ACCEPT *)bio->ptr;
	172	if (c->accept_sock != INVALID_SOCKET)
	173	{
	174	shutdown(c->accept_sock,2);
d02b48c6	175	closesocket(c->accept_sock);
d02b48c6 RE	176	c->accept_sock=INVALID_SOCKET;
	177	bio->num=INVALID_SOCKET;
	178	}
	179	}
	180
6b691a5c	181	static int acpt_free(BIO *a)
d02b48c6 RE	182	{
	183	BIO_ACCEPT *data;
	184
	185	if (a == NULL) return(0);
	186	data=(BIO_ACCEPT *)a->ptr;
	187
	188	if (a->shutdown)
	189	{
	190	acpt_close_socket(a);
	191	BIO_ACCEPT_free(data);
	192	a->ptr=NULL;
	193	a->flags=0;
	194	a->init=0;
	195	}
	196	return(1);
	197	}
	198
6b691a5c	199	static int acpt_state(BIO b, BIO_ACCEPT c)
d02b48c6 RE	200	{
d02b48c6 RE	201	BIO bio=NULL,dbio;
d02b48c6 RE	202	int s= -1;
	203	int i;
	204
	205	again:
	206	switch (c->state)
	207	{
	208	case ACPT_S_BEFORE:
	209	if (c->param_addr == NULL)
	210	{
	211	BIOerr(BIO_F_ACPT_STATE,BIO_R_NO_ACCEPT_PORT_SPECIFIED);
	212	return(-1);
	213	}
dfeab068	214	s=BIO_get_accept_socket(c->param_addr,c->bind_mode);
d02b48c6 RE	215	if (s == INVALID_SOCKET)
	216	return(-1);
	217
d02b48c6 RE	218	if (c->accept_nbio)
d02b48c6 RE	219	{
dfeab068	220	if (!BIO_socket_nbio(s,1))
d02b48c6	221	{
d02b48c6	222	closesocket(s);
d02b48c6 RE	223	BIOerr(BIO_F_ACPT_STATE,BIO_R_ERROR_SETTING_NBIO_ON_ACCEPT_SOCKET);
	224	return(-1);
	225	}
	226	}
d02b48c6 RE	227	c->accept_sock=s;
	228	b->num=s;
	229	c->state=ACPT_S_GET_ACCEPT_SOCKET;
	230	return(1);
dfeab068	231	/* break; */
d02b48c6 RE	232	case ACPT_S_GET_ACCEPT_SOCKET:
	233	if (b->next_bio != NULL)
	234	{
	235	c->state=ACPT_S_OK;
	236	goto again;
	237	}
	238	i=BIO_accept(c->accept_sock,&(c->addr));
	239	if (i < 0) return(i);
	240	bio=BIO_new_socket(i,BIO_CLOSE);
	241	if (bio == NULL) goto err;
	242
	243	BIO_set_callback(bio,BIO_get_callback(b));
	244	BIO_set_callback_arg(bio,BIO_get_callback_arg(b));
	245
d02b48c6 RE	246	if (c->nbio)
d02b48c6 RE	247	{
dfeab068	248	if (!BIO_socket_nbio(i,1))
d02b48c6 RE	249	{
	250	BIOerr(BIO_F_ACPT_STATE,BIO_R_ERROR_SETTING_NBIO_ON_ACCEPTED_SOCKET);
	251	goto err;
	252	}
	253	}
d02b48c6 RE	254
	255	/* If the accept BIO has an bio_chain, we dup it and
	256	* put the new socket at the end. */
	257	if (c->bio_chain != NULL)
	258	{
	259	if ((dbio=BIO_dup_chain(c->bio_chain)) == NULL)
	260	goto err;
	261	if (!BIO_push(dbio,bio)) goto err;
	262	bio=dbio;
	263	}
	264	if (BIO_push(b,bio) == NULL) goto err;
	265
	266	c->state=ACPT_S_OK;
	267	return(1);
	268	err:
	269	if (bio != NULL)
	270	BIO_free(bio);
	271	else if (s >= 0)
d02b48c6	272	closesocket(s);
d02b48c6	273	return(0);
dfeab068	274	/* break; */
d02b48c6 RE	275	case ACPT_S_OK:
	276	if (b->next_bio == NULL)
	277	{
	278	c->state=ACPT_S_GET_ACCEPT_SOCKET;
	279	goto again;
	280	}
	281	return(1);
dfeab068	282	/* break; */
d02b48c6 RE	283	default:
d02b48c6 RE	284	return(0);
dfeab068	285	/* break; */
d02b48c6 RE	286	}
	287
	288	}
	289
6b691a5c	290	static int acpt_read(BIO b, char out, int outl)
d02b48c6 RE	291	{
	292	int ret=0;
	293	BIO_ACCEPT *data;
	294
b1c4fe36	295	BIO_clear_retry_flags(b);
d02b48c6 RE	296	data=(BIO_ACCEPT *)b->ptr;
	297
	298	while (b->next_bio == NULL)
	299	{
	300	ret=acpt_state(b,data);
	301	if (ret <= 0) return(ret);
	302	}
	303
	304	ret=BIO_read(b->next_bio,out,outl);
	305	BIO_copy_next_retry(b);
	306	return(ret);
	307	}
	308
6b691a5c	309	static int acpt_write(BIO b, char in, int inl)
d02b48c6 RE	310	{
	311	int ret;
	312	BIO_ACCEPT *data;
	313
	314	BIO_clear_retry_flags(b);
	315	data=(BIO_ACCEPT *)b->ptr;
	316
	317	while (b->next_bio == NULL)
	318	{
	319	ret=acpt_state(b,data);
	320	if (ret <= 0) return(ret);
	321	}
	322
	323	ret=BIO_write(b->next_bio,in,inl);
	324	BIO_copy_next_retry(b);
	325	return(ret);
	326	}
	327
6b691a5c	328	static long acpt_ctrl(BIO b, int cmd, long num, char ptr)
d02b48c6 RE	329	{
	330	BIO *dbio;
	331	int *ip;
	332	long ret=1;
	333	BIO_ACCEPT *data;
58964a49	334	char **pp;
d02b48c6 RE	335
	336	data=(BIO_ACCEPT *)b->ptr;
	337
	338	switch (cmd)
	339	{
	340	case BIO_CTRL_RESET:
	341	ret=0;
	342	data->state=ACPT_S_BEFORE;
	343	acpt_close_socket(b);
	344	b->flags=0;
	345	break;
	346	case BIO_C_DO_STATE_MACHINE:
	347	/* use this one to start the connection */
	348	ret=(long)acpt_state(b,data);
	349	break;
	350	case BIO_C_SET_ACCEPT:
	351	if (ptr != NULL)
	352	{
	353	if (num == 0)
	354	{
	355	b->init=1;
	356	if (data->param_addr != NULL)
	357	Free(data->param_addr);
	358	data->param_addr=BUF_strdup(ptr);
	359	}
	360	else if (num == 1)
	361	{
	362	data->accept_nbio=(ptr != NULL);
	363	}
	364	else if (num == 2)
	365	{
	366	if (data->bio_chain != NULL)
	367	BIO_free(data->bio_chain);
	368	data->bio_chain=(BIO *)ptr;
	369	}
	370	}
	371	break;
	372	case BIO_C_SET_NBIO:
	373	data->nbio=(int)num;
	374	break;
dfeab068 RE	375	case BIO_C_SET_FD:
	376	b->init=1;
	377	b->num= ((int )ptr);
	378	data->accept_sock=b->num;
	379	data->state=ACPT_S_GET_ACCEPT_SOCKET;
	380	b->shutdown=(int)num;
	381	b->init=1;
	382	break;
d02b48c6 RE	383	case BIO_C_GET_FD:
	384	if (b->init)
	385	{
	386	ip=(int *)ptr;
	387	if (ip != NULL)
	388	*ip=data->accept_sock;
dfeab068	389	ret=data->accept_sock;
d02b48c6 RE	390	}
	391	else
	392	ret= -1;
	393	break;
58964a49 RE	394	case BIO_C_GET_ACCEPT:
	395	if (b->init)
	396	{
	397	if (ptr != NULL)
	398	{
	399	pp=(char **)ptr;
	400	*pp=data->param_addr;
	401	}
	402	else
	403	ret= -1;
	404	}
	405	else
	406	ret= -1;
	407	break;
d02b48c6 RE	408	case BIO_CTRL_GET_CLOSE:
	409	ret=b->shutdown;
	410	break;
	411	case BIO_CTRL_SET_CLOSE:
	412	b->shutdown=(int)num;
	413	break;
	414	case BIO_CTRL_PENDING:
	415	case BIO_CTRL_WPENDING:
	416	ret=0;
	417	break;
	418	case BIO_CTRL_FLUSH:
	419	break;
dfeab068 RE	420	case BIO_C_SET_BIND_MODE:
	421	data->bind_mode=(int)num;
	422	break;
	423	case BIO_C_GET_BIND_MODE:
	424	ret=(long)data->bind_mode;
	425	break;
d02b48c6 RE	426	case BIO_CTRL_DUP:
	427	dbio=(BIO *)ptr;
	428	/* if (data->param_port) EAY EAY
	429	BIO_set_port(dbio,data->param_port);
	430	if (data->param_hostname)
	431	BIO_set_hostname(dbio,data->param_hostname);
	432	BIO_set_nbio(dbio,data->nbio); */
	433	break;
	434
	435	default:
	436	ret=0;
	437	break;
	438	}
	439	return(ret);
	440	}
	441
6b691a5c	442	static int acpt_puts(BIO bp, char str)
d02b48c6 RE	443	{
	444	int n,ret;
	445
	446	n=strlen(str);
	447	ret=acpt_write(bp,str,n);
	448	return(ret);
	449	}
	450
6b691a5c	451	BIO BIO_new_accept(char str)
d02b48c6 RE	452	{
	453	BIO *ret;
	454
	455	ret=BIO_new(BIO_s_accept());
	456	if (ret == NULL) return(NULL);
	457	if (BIO_set_accept_port(ret,str))
	458	return(ret);
	459	else
	460	{
	461	BIO_free(ret);
	462	return(NULL);
	463	}
	464	}
	465
	466	#endif