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

/* crypto/bio/bss_sock.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.]
 */

#if !defined(NO_SOCK) || defined(BIO_FD)

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

#ifndef BIO_FD
#ifndef NOPROTO
static int sock_write(BIO *h,char *buf,int num);
static int sock_read(BIO *h,char *buf,int size);
static int sock_puts(BIO *h,char *str);
static long sock_ctrl(BIO *h,int cmd,long arg1,char *arg2);
static int sock_new(BIO *h);
static int sock_free(BIO *data);
int BIO_sock_should_retry(int s);
#else
static int sock_write();
static int sock_read();
static int sock_puts();
static long sock_ctrl();
static int sock_new();
static int sock_free();
int BIO_sock_should_retry();
#endif

#else

#ifndef NOPROTO
static int fd_write(BIO *h,char *buf,int num);
static int fd_read(BIO *h,char *buf,int size);
static int fd_puts(BIO *h,char *str);
static long fd_ctrl(BIO *h,int cmd,long arg1,char *arg2);
static int fd_new(BIO *h);
static int fd_free(BIO *data);
int BIO_fd_should_retry(int s);
#else
static int fd_write();
static int fd_read();
static int fd_puts();
static long fd_ctrl();
static int fd_new();
static int fd_free();
int BIO_fd_should_retry();
#endif
#endif

#ifndef BIO_FD
static BIO_METHOD methods_sockp=
	{
	BIO_TYPE_SOCKET,
	"socket",
	sock_write,
	sock_read,
	sock_puts,
	NULL, /* sock_gets, */
	sock_ctrl,
	sock_new,
	sock_free,
	};

BIO_METHOD *BIO_s_socket(void)
	{
	return(&methods_sockp);
	}
#else
static BIO_METHOD methods_fdp=
	{
	BIO_TYPE_FD,"file descriptor",
	fd_write,
	fd_read,
	fd_puts,
	NULL, /* fd_gets, */
	fd_ctrl,
	fd_new,
	fd_free,
	};

BIO_METHOD *BIO_s_fd(void)
	{
	return(&methods_fdp);
	}
#endif

#ifndef BIO_FD
BIO *BIO_new_socket(int fd, int close_flag)
#else
BIO *BIO_new_fd(int fd,int close_flag)
#endif
	{
	BIO *ret;

#ifndef BIO_FD
	ret=BIO_new(BIO_s_socket());
#else
	ret=BIO_new(BIO_s_fd());
#endif
	if (ret == NULL) return(NULL);
	BIO_set_fd(ret,fd,close_flag);
	return(ret);
	}

#ifndef BIO_FD
static int sock_new(BIO *bi)
#else
static int fd_new(BIO *bi)
#endif
	{
	bi->init=0;
	bi->num=0;
	bi->ptr=NULL;
	bi->flags=0;
	return(1);
	}

#ifndef BIO_FD
static int sock_free(BIO *a)
#else
static int fd_free(BIO *a)
#endif
	{
	if (a == NULL) return(0);
	if (a->shutdown)
		{
		if (a->init)
			{
#ifndef BIO_FD
			shutdown(a->num,2);
			closesocket(a->num);
#else			/* BIO_FD */
			close(a->num);
#endif

			}
		a->init=0;
		a->flags=0;
		}
	return(1);
	}
	
#ifndef BIO_FD
static int sock_read(BIO *b, char *out, int outl)
#else
static int fd_read(BIO *b, char *out,int outl)
#endif
	{
	int ret=0;

	if (out != NULL)
		{
#ifndef BIO_FD
		clear_socket_error();
		ret=readsocket(b->num,out,outl);
#else
		clear_sys_error();
		ret=read(b->num,out,outl);
#endif
		BIO_clear_retry_flags(b);
		if (ret <= 0)
			{
#ifndef BIO_FD
			if (BIO_sock_should_retry(ret))
#else
			if (BIO_fd_should_retry(ret))
#endif
				BIO_set_retry_read(b);
			}
		}
	return(ret);
	}

#ifndef BIO_FD
static int sock_write(BIO *b, char *in, int inl)
#else
static int fd_write(BIO *b, char *in, int inl)
#endif
	{
	int ret;
	
#ifndef BIO_FD
	clear_socket_error();
	ret=writesocket(b->num,in,inl);
#else
	clear_sys_error();
	ret=write(b->num,in,inl);
#endif
	BIO_clear_retry_flags(b);
	if (ret <= 0)
		{
#ifndef BIO_FD
		if (BIO_sock_should_retry(ret))
#else
		if (BIO_fd_should_retry(ret))
#endif
			BIO_set_retry_write(b);
		}
	return(ret);
	}

#ifndef BIO_FD
static long sock_ctrl(BIO *b, int cmd, long num, char *ptr)
#else
static long fd_ctrl(BIO *b, int cmd, long num, char *ptr)
#endif
	{
	long ret=1;
	int *ip;

	switch (cmd)
		{
	case BIO_CTRL_RESET:
		num=0;
	case BIO_C_FILE_SEEK:
#ifdef BIO_FD
		ret=(long)lseek(b->num,num,0);
#else
		ret=0;
#endif
		break;
	case BIO_C_FILE_TELL:
	case BIO_CTRL_INFO:
#ifdef BIO_FD
		ret=(long)lseek(b->num,0,1);
#else
		ret=0;
#endif
		break;
	case BIO_C_SET_FD:
#ifndef BIO_FD
		sock_free(b);
#else
		fd_free(b);
#endif
		b->num= *((int *)ptr);
		b->shutdown=(int)num;
		b->init=1;
		break;
	case BIO_C_GET_FD:
		if (b->init)
			{
			ip=(int *)ptr;
			if (ip != NULL) *ip=b->num;
			ret=b->num;
			}
		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_DUP:
	case BIO_CTRL_FLUSH:
		ret=1;
		break;
	default:
		ret=0;
		break;
		}
	return(ret);
	}

#ifdef undef
static int sock_gets(BIO *bp, char *buf,int size)
	{
	return(-1);
	}
#endif

#ifndef BIO_FD
static int sock_puts(BIO *bp, char *str)
#else
static int fd_puts(BIO *bp, char *str)
#endif
	{
	int n,ret;

	n=strlen(str);
#ifndef BIO_FD
	ret=sock_write(bp,str,n);
#else
	ret=fd_write(bp,str,n);
#endif
	return(ret);
	}

#ifndef BIO_FD
int BIO_sock_should_retry(int i)
#else
int BIO_fd_should_retry(int i)
#endif
	{
	int err;

	if ((i == 0) || (i == -1))
		{
#ifndef BIO_FD
		err=get_last_socket_error();
#else
		err=get_last_sys_error();
#endif

#if defined(WINDOWS) && 0 /* more microsoft stupidity? perhaps not? Ben 4/1/99 */
		if ((i == -1) && (err == 0))
			return(1);
#endif

#ifndef BIO_FD
		return(BIO_sock_non_fatal_error(err));
#else
		return(BIO_fd_non_fatal_error(err));
#endif
		}
	return(0);
	}

#ifndef BIO_FD
int BIO_sock_non_fatal_error(int err)
#else
int BIO_fd_non_fatal_error(int err)
#endif
	{
	switch (err)
		{
#if !defined(BIO_FD) && defined(WINDOWS)
# if defined(WSAEWOULDBLOCK)
	case WSAEWOULDBLOCK:
# endif

# if 0 /* This appears to always be an error */
#  if defined(WSAENOTCONN)
	case WSAENOTCONN:
#  endif
# endif
#endif

#ifdef EWOULDBLOCK
# ifdef WSAEWOULDBLOCK
#  if WSAEWOULDBLOCK != EWOULDBLOCK
	case EWOULDBLOCK:
#  endif
# else
	case EWOULDBLOCK:
# endif
#endif

#if defined(ENOTCONN)
	case ENOTCONN:
#endif

#ifdef EINTR
	case EINTR:
#endif

#ifdef EAGAIN
#if EWOULDBLOCK != EAGAIN
	case EAGAIN:
# endif
#endif

#ifdef EPROTO
	case EPROTO:
#endif

#ifdef EINPROGRESS
	case EINPROGRESS:
#endif

#ifdef EALREADY
	case EALREADY:
#endif
		return(1);
		/* break; */
	default:
		break;
		}
	return(0);
	}
#endif
Commit	Line	Data
d02b48c6	1	/* crypto/bio/bss_sock.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	#if !defined(NO_SOCK) \|\| defined(BIO_FD)
	60
	61	#include <stdio.h>
	62	#include <errno.h>
	63	#define USE_SOCKETS
	64	#include "cryptlib.h"
	65	#include "bio.h"
	66
67	#ifndef BIO_FD
68	#ifndef NOPROTO
69	static int sock_write(BIO h,char buf,int num);
70	static int sock_read(BIO h,char buf,int size);
71	static int sock_puts(BIO h,char str);
72	static long sock_ctrl(BIO h,int cmd,long arg1,char arg2);
73	static int sock_new(BIO *h);
74	static int sock_free(BIO *data);
75	int BIO_sock_should_retry(int s);
76	#else
77	static int sock_write();
78	static int sock_read();
79	static int sock_puts();
80	static long sock_ctrl();
81	static int sock_new();
82	static int sock_free();
83	int BIO_sock_should_retry();
84	#endif
85
86	#else
87
88	#ifndef NOPROTO
89	static int fd_write(BIO h,char buf,int num);
90	static int fd_read(BIO h,char buf,int size);
91	static int fd_puts(BIO h,char str);
92	static long fd_ctrl(BIO h,int cmd,long arg1,char arg2);
93	static int fd_new(BIO *h);
94	static int fd_free(BIO *data);
95	int BIO_fd_should_retry(int s);
96	#else
97	static int fd_write();
98	static int fd_read();
99	static int fd_puts();
100	static long fd_ctrl();
101	static int fd_new();
102	static int fd_free();
103	int BIO_fd_should_retry();
104	#endif
105	#endif
106
107	#ifndef BIO_FD
108	static BIO_METHOD methods_sockp=
109	{
58964a49 RE	110	BIO_TYPE_SOCKET,
58964a49 RE	111	"socket",
d02b48c6 RE	112	sock_write,
	113	sock_read,
	114	sock_puts,
	115	NULL, /* sock_gets, */
	116	sock_ctrl,
	117	sock_new,
	118	sock_free,
	119	};
	120
6b691a5c	121	BIO_METHOD *BIO_s_socket(void)
d02b48c6 RE	122	{
	123	return(&methods_sockp);
	124	}
	125	#else
	126	static BIO_METHOD methods_fdp=
	127	{
	128	BIO_TYPE_FD,"file descriptor",
	129	fd_write,
	130	fd_read,
	131	fd_puts,
	132	NULL, /* fd_gets, */
	133	fd_ctrl,
	134	fd_new,
	135	fd_free,
	136	};
	137
6b691a5c	138	BIO_METHOD *BIO_s_fd(void)
d02b48c6 RE	139	{
	140	return(&methods_fdp);
	141	}
	142	#endif
	143
	144	#ifndef BIO_FD
6b691a5c	145	BIO *BIO_new_socket(int fd, int close_flag)
d02b48c6	146	#else
6b691a5c	147	BIO *BIO_new_fd(int fd,int close_flag)
d02b48c6	148	#endif
d02b48c6 RE	149	{
	150	BIO *ret;
	151
	152	#ifndef BIO_FD
	153	ret=BIO_new(BIO_s_socket());
	154	#else
	155	ret=BIO_new(BIO_s_fd());
	156	#endif
	157	if (ret == NULL) return(NULL);
	158	BIO_set_fd(ret,fd,close_flag);
	159	return(ret);
	160	}
	161
	162	#ifndef BIO_FD
6b691a5c	163	static int sock_new(BIO *bi)
d02b48c6	164	#else
6b691a5c	165	static int fd_new(BIO *bi)
d02b48c6	166	#endif
d02b48c6 RE	167	{
	168	bi->init=0;
	169	bi->num=0;
	170	bi->ptr=NULL;
	171	bi->flags=0;
	172	return(1);
	173	}
	174
	175	#ifndef BIO_FD
6b691a5c	176	static int sock_free(BIO *a)
d02b48c6	177	#else
6b691a5c	178	static int fd_free(BIO *a)
d02b48c6	179	#endif
d02b48c6 RE	180	{
	181	if (a == NULL) return(0);
	182	if (a->shutdown)
	183	{
	184	if (a->init)
	185	{
	186	#ifndef BIO_FD
	187	shutdown(a->num,2);
d02b48c6	188	closesocket(a->num);
d02b48c6 RE	189	#else /* BIO_FD */
	190	close(a->num);
	191	#endif
	192
	193	}
	194	a->init=0;
	195	a->flags=0;
	196	}
	197	return(1);
	198	}
	199
	200	#ifndef BIO_FD
6b691a5c	201	static int sock_read(BIO b, char out, int outl)
d02b48c6	202	#else
6b691a5c	203	static int fd_read(BIO b, char out,int outl)
d02b48c6	204	#endif
d02b48c6 RE	205	{
	206	int ret=0;
	207
	208	if (out != NULL)
	209	{
dfeab068	210	#ifndef BIO_FD
58964a49	211	clear_socket_error();
dfeab068	212	ret=readsocket(b->num,out,outl);
d02b48c6	213	#else
58964a49	214	clear_sys_error();
d02b48c6 RE	215	ret=read(b->num,out,outl);
	216	#endif
	217	BIO_clear_retry_flags(b);
	218	if (ret <= 0)
	219	{
	220	#ifndef BIO_FD
	221	if (BIO_sock_should_retry(ret))
	222	#else
	223	if (BIO_fd_should_retry(ret))
	224	#endif
	225	BIO_set_retry_read(b);
	226	}
	227	}
	228	return(ret);
	229	}
	230
	231	#ifndef BIO_FD
6b691a5c	232	static int sock_write(BIO b, char in, int inl)
d02b48c6	233	#else
6b691a5c	234	static int fd_write(BIO b, char in, int inl)
d02b48c6	235	#endif
d02b48c6 RE	236	{
	237	int ret;
	238
dfeab068	239	#ifndef BIO_FD
58964a49	240	clear_socket_error();
dfeab068	241	ret=writesocket(b->num,in,inl);
d02b48c6	242	#else
58964a49	243	clear_sys_error();
d02b48c6 RE	244	ret=write(b->num,in,inl);
	245	#endif
	246	BIO_clear_retry_flags(b);
	247	if (ret <= 0)
	248	{
	249	#ifndef BIO_FD
	250	if (BIO_sock_should_retry(ret))
	251	#else
	252	if (BIO_fd_should_retry(ret))
	253	#endif
	254	BIO_set_retry_write(b);
	255	}
	256	return(ret);
	257	}
	258
	259	#ifndef BIO_FD
6b691a5c	260	static long sock_ctrl(BIO b, int cmd, long num, char ptr)
d02b48c6	261	#else
6b691a5c	262	static long fd_ctrl(BIO b, int cmd, long num, char ptr)
d02b48c6	263	#endif
d02b48c6 RE	264	{
	265	long ret=1;
	266	int *ip;
	267
	268	switch (cmd)
	269	{
	270	case BIO_CTRL_RESET:
dfeab068 RE	271	num=0;
dfeab068 RE	272	case BIO_C_FILE_SEEK:
d02b48c6	273	#ifdef BIO_FD
dfeab068	274	ret=(long)lseek(b->num,num,0);
d02b48c6 RE	275	#else
	276	ret=0;
	277	#endif
	278	break;
dfeab068	279	case BIO_C_FILE_TELL:
d02b48c6	280	case BIO_CTRL_INFO:
dfeab068 RE	281	#ifdef BIO_FD
	282	ret=(long)lseek(b->num,0,1);
	283	#else
d02b48c6	284	ret=0;
dfeab068	285	#endif
d02b48c6 RE	286	break;
	287	case BIO_C_SET_FD:
	288	#ifndef BIO_FD
	289	sock_free(b);
	290	#else
	291	fd_free(b);
	292	#endif
	293	b->num= ((int )ptr);
	294	b->shutdown=(int)num;
	295	b->init=1;
	296	break;
	297	case BIO_C_GET_FD:
	298	if (b->init)
	299	{
	300	ip=(int *)ptr;
	301	if (ip != NULL) *ip=b->num;
	302	ret=b->num;
	303	}
	304	else
	305	ret= -1;
	306	break;
	307	case BIO_CTRL_GET_CLOSE:
	308	ret=b->shutdown;
	309	break;
	310	case BIO_CTRL_SET_CLOSE:
	311	b->shutdown=(int)num;
	312	break;
	313	case BIO_CTRL_PENDING:
	314	case BIO_CTRL_WPENDING:
	315	ret=0;
	316	break;
	317	case BIO_CTRL_DUP:
	318	case BIO_CTRL_FLUSH:
	319	ret=1;
	320	break;
d02b48c6 RE	321	default:
	322	ret=0;
	323	break;
	324	}
	325	return(ret);
	326	}
	327
	328	#ifdef undef
6b691a5c	329	static int sock_gets(BIO bp, char buf,int size)
d02b48c6 RE	330	{
	331	return(-1);
	332	}
	333	#endif
	334
	335	#ifndef BIO_FD
6b691a5c	336	static int sock_puts(BIO bp, char str)
d02b48c6	337	#else
6b691a5c	338	static int fd_puts(BIO bp, char str)
d02b48c6	339	#endif
d02b48c6 RE	340	{
	341	int n,ret;
	342
	343	n=strlen(str);
	344	#ifndef BIO_FD
	345	ret=sock_write(bp,str,n);
	346	#else
	347	ret=fd_write(bp,str,n);
	348	#endif
	349	return(ret);
	350	}
	351
	352	#ifndef BIO_FD
6b691a5c	353	int BIO_sock_should_retry(int i)
d02b48c6	354	#else
6b691a5c	355	int BIO_fd_should_retry(int i)
d02b48c6	356	#endif
d02b48c6	357	{
58964a49 RE	358	int err;
58964a49 RE	359
d02b48c6 RE	360	if ((i == 0) \|\| (i == -1))
d02b48c6 RE	361	{
dfeab068	362	#ifndef BIO_FD
58964a49 RE	363	err=get_last_socket_error();
	364	#else
	365	err=get_last_sys_error();
d02b48c6 RE	366	#endif
d02b48c6 RE	367
74d7abc2	368	#if defined(WINDOWS) && 0 /* more microsoft stupidity? perhaps not? Ben 4/1/99 */
58964a49	369	if ((i == -1) && (err == 0))
d02b48c6 RE	370	return(1);
d02b48c6 RE	371	#endif
58964a49	372
d02b48c6	373	#ifndef BIO_FD
58964a49	374	return(BIO_sock_non_fatal_error(err));
d02b48c6	375	#else
58964a49	376	return(BIO_fd_non_fatal_error(err));
d02b48c6 RE	377	#endif
	378	}
	379	return(0);
	380	}
	381
	382	#ifndef BIO_FD
6b691a5c	383	int BIO_sock_non_fatal_error(int err)
d02b48c6	384	#else
6b691a5c	385	int BIO_fd_non_fatal_error(int err)
d02b48c6	386	#endif
d02b48c6 RE	387	{
	388	switch (err)
	389	{
	390	#if !defined(BIO_FD) && defined(WINDOWS)
	391	# if defined(WSAEWOULDBLOCK)
	392	case WSAEWOULDBLOCK:
	393	# endif
	394
dfeab068 RE	395	# if 0 /* This appears to always be an error */
dfeab068 RE	396	# if defined(WSAENOTCONN)
d02b48c6	397	case WSAENOTCONN:
dfeab068	398	# endif
d02b48c6 RE	399	# endif
	400	#endif
	401
	402	#ifdef EWOULDBLOCK
	403	# ifdef WSAEWOULDBLOCK
	404	# if WSAEWOULDBLOCK != EWOULDBLOCK
	405	case EWOULDBLOCK:
	406	# endif
	407	# else
	408	case EWOULDBLOCK:
	409	# endif
	410	#endif
	411
58964a49 RE	412	#if defined(ENOTCONN)
	413	case ENOTCONN:
	414	#endif
	415
d02b48c6 RE	416	#ifdef EINTR
	417	case EINTR:
	418	#endif
	419
	420	#ifdef EAGAIN
	421	#if EWOULDBLOCK != EAGAIN
	422	case EAGAIN:
	423	# endif
	424	#endif
	425
	426	#ifdef EPROTO
	427	case EPROTO:
	428	#endif
	429
	430	#ifdef EINPROGRESS
	431	case EINPROGRESS:
	432	#endif
	433
	434	#ifdef EALREADY
	435	case EALREADY:
	436	#endif
	437	return(1);
dfeab068	438	/* break; */
d02b48c6 RE	439	default:
	440	break;
	441	}
	442	return(0);
	443	}
	444	#endif