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

/* crypto/bio/bss_file.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.]
 */

/*-
 * 03-Dec-1997	rdenny@dc3.com  Fix bug preventing use of stdin/stdout
 *		with binary data (e.g. asn1parse -inform DER < xxx) under
 *		Windows
 */

#ifndef HEADER_BSS_FILE_C
#define HEADER_BSS_FILE_C

#if defined(__linux) || defined(__sun) || defined(__hpux)
/* Following definition aliases fopen to fopen64 on above mentioned
 * platforms. This makes it possible to open and sequentially access
 * files larger than 2GB from 32-bit application. It does not allow to
 * traverse them beyond 2GB with fseek/ftell, but on the other hand *no*
 * 32-bit platform permits that, not with fseek/ftell. Not to mention
 * that breaking 2GB limit for seeking would require surgery to *our*
 * API. But sequential access suffices for practical cases when you
 * can run into large files, such as fingerprinting, so we can let API
 * alone. For reference, the list of 32-bit platforms which allow for
 * sequential access of large files without extra "magic" comprise *BSD,
 * Darwin, IRIX...
 */
#ifndef _FILE_OFFSET_BITS
#define _FILE_OFFSET_BITS 64
#endif
#endif

#include <stdio.h>
#include <errno.h>
#include "cryptlib.h"
#include "bio_lcl.h"
#include <openssl/err.h>

#if defined(OPENSSL_SYS_NETWARE) && defined(NETWARE_CLIB)
#include <nwfileio.h>
#endif

#if !defined(OPENSSL_NO_STDIO)

static int MS_CALLBACK file_write(BIO *h, const char *buf, int num);
static int MS_CALLBACK file_read(BIO *h, char *buf, int size);
static int MS_CALLBACK file_puts(BIO *h, const char *str);
static int MS_CALLBACK file_gets(BIO *h, char *str, int size);
static long MS_CALLBACK file_ctrl(BIO *h, int cmd, long arg1, void *arg2);
static int MS_CALLBACK file_new(BIO *h);
static int MS_CALLBACK file_free(BIO *data);
static BIO_METHOD methods_filep=
	{
	BIO_TYPE_FILE,
	"FILE pointer",
	file_write,
	file_read,
	file_puts,
	file_gets,
	file_ctrl,
	file_new,
	file_free,
	NULL,
	};

BIO *BIO_new_file(const char *filename, const char *mode)
	{
	BIO *ret;
	FILE *file;

	if ((file=fopen(filename,mode)) == NULL)
		{
		SYSerr(SYS_F_FOPEN,get_last_sys_error());
		ERR_add_error_data(5,"fopen('",filename,"','",mode,"')");
		if (errno == ENOENT)
			BIOerr(BIO_F_BIO_NEW_FILE,BIO_R_NO_SUCH_FILE);
		else
			BIOerr(BIO_F_BIO_NEW_FILE,ERR_R_SYS_LIB);
		return(NULL);
		}
	if ((ret=BIO_new(BIO_s_file_internal())) == NULL)
		{
		fclose(file);
		return(NULL);
		}

	BIO_clear_flags(ret,BIO_FLAGS_UPLINK); /* we did fopen -> we disengage UPLINK */
	BIO_set_fp(ret,file,BIO_CLOSE);
	return(ret);
	}

BIO *BIO_new_fp(FILE *stream, int close_flag)
	{
	BIO *ret;

	if ((ret=BIO_new(BIO_s_file())) == NULL)
		return(NULL);

	BIO_set_flags(ret,BIO_FLAGS_UPLINK); /* redundant, left for documentation puposes */
	BIO_set_fp(ret,stream,close_flag);
	return(ret);
	}

BIO_METHOD *BIO_s_file(void)
	{
	return(&methods_filep);
	}

static int MS_CALLBACK file_new(BIO *bi)
	{
	bi->init=0;
	bi->num=0;
	bi->ptr=NULL;
	bi->flags=BIO_FLAGS_UPLINK; /* default to UPLINK */
	return(1);
	}

static int MS_CALLBACK file_free(BIO *a)
	{
	if (a == NULL) return(0);
	if (a->shutdown)
		{
		if ((a->init) && (a->ptr != NULL))
			{
			if (a->flags&BIO_FLAGS_UPLINK)
				UP_fclose (a->ptr);
			else
				fclose (a->ptr);
			a->ptr=NULL;
			a->flags=BIO_FLAGS_UPLINK;
			}
		a->init=0;
		}
	return(1);
	}
	
static int MS_CALLBACK file_read(BIO *b, char *out, int outl)
	{
	int ret=0;

	if (b->init && (out != NULL))
		{
		if (b->flags&BIO_FLAGS_UPLINK)
			ret=UP_fread(out,1,(int)outl,b->ptr);
		else
			ret=fread(out,1,(int)outl,(FILE *)b->ptr);
		if(ret == 0 && (b->flags&BIO_FLAGS_UPLINK)?UP_ferror((FILE *)b->ptr):ferror((FILE *)b->ptr))
			{
			SYSerr(SYS_F_FREAD,get_last_sys_error());
			BIOerr(BIO_F_FILE_READ,ERR_R_SYS_LIB);
			ret=-1;
			}
		}
	return(ret);
	}

static int MS_CALLBACK file_write(BIO *b, const char *in, int inl)
	{
	int ret=0;

	if (b->init && (in != NULL))
		{
		if (b->flags&BIO_FLAGS_UPLINK)
			ret=UP_fwrite(in,(int)inl,1,b->ptr);
		else
			ret=fwrite(in,(int)inl,1,(FILE *)b->ptr);
		if (ret)
			ret=inl;
		/* ret=fwrite(in,1,(int)inl,(FILE *)b->ptr); */
		/* according to Tim Hudson <tjh@cryptsoft.com>, the commented
		 * out version above can cause 'inl' write calls under
		 * some stupid stdio implementations (VMS) */
		}
	return(ret);
	}

static long MS_CALLBACK file_ctrl(BIO *b, int cmd, long num, void *ptr)
	{
	long ret=1;
	FILE *fp=(FILE *)b->ptr;
	FILE **fpp;
	char p[4];

	switch (cmd)
		{
	case BIO_C_FILE_SEEK:
	case BIO_CTRL_RESET:
		if (b->flags&BIO_FLAGS_UPLINK)
			ret=(long)UP_fseek(b->ptr,num,0);
		else
			ret=(long)fseek(fp,num,0);
		break;
	case BIO_CTRL_EOF:
		if (b->flags&BIO_FLAGS_UPLINK)
			ret=(long)UP_feof(fp);
		else
			ret=(long)feof(fp);
		break;
	case BIO_C_FILE_TELL:
	case BIO_CTRL_INFO:
		if (b->flags&BIO_FLAGS_UPLINK)
			ret=UP_ftell(b->ptr);
		else
			ret=ftell(fp);
		break;
	case BIO_C_SET_FILE_PTR:
		file_free(b);
		b->shutdown=(int)num&BIO_CLOSE;
		b->ptr=ptr;
		b->init=1;
#if BIO_FLAGS_UPLINK!=0
#if defined(__MINGW32__) && defined(__MSVCRT__) && !defined(_IOB_ENTRIES)
#define _IOB_ENTRIES 20
#endif
#if defined(_IOB_ENTRIES)
		/* Safety net to catch purely internal BIO_set_fp calls */
		if ((size_t)ptr >= (size_t)stdin &&
		    (size_t)ptr <  (size_t)(stdin+_IOB_ENTRIES))
			BIO_clear_flags(b,BIO_FLAGS_UPLINK);
#endif
#endif
#ifdef UP_fsetmod
		if (b->flags&BIO_FLAGS_UPLINK)
			UP_fsetmod(b->ptr,(char)((num&BIO_FP_TEXT)?'t':'b'));
		else
#endif
		{
#if defined(OPENSSL_SYS_WINDOWS)
		int fd = _fileno((FILE*)ptr);
		if (num & BIO_FP_TEXT)
			_setmode(fd,_O_TEXT);
		else
			_setmode(fd,_O_BINARY);
#elif defined(OPENSSL_SYS_NETWARE) && defined(NETWARE_CLIB)
		int fd = fileno((FILE*)ptr);
         /* Under CLib there are differences in file modes
         */
		if (num & BIO_FP_TEXT)
			setmode(fd,O_TEXT);
		else
			setmode(fd,O_BINARY);
#elif defined(OPENSSL_SYS_MSDOS)
		int fd = fileno((FILE*)ptr);
		/* Set correct text/binary mode */
		if (num & BIO_FP_TEXT)
			_setmode(fd,_O_TEXT);
		/* Dangerous to set stdin/stdout to raw (unless redirected) */
		else
			{
			if (fd == STDIN_FILENO || fd == STDOUT_FILENO)
				{
				if (isatty(fd) <= 0)
					_setmode(fd,_O_BINARY);
				}
			else
				_setmode(fd,_O_BINARY);
			}
#elif defined(OPENSSL_SYS_OS2)
		int fd = fileno((FILE*)ptr);
		if (num & BIO_FP_TEXT)
			setmode(fd, O_TEXT);
		else
			setmode(fd, O_BINARY);
#endif
		}
		break;
	case BIO_C_SET_FILENAME:
		file_free(b);
		b->shutdown=(int)num&BIO_CLOSE;
		if (num & BIO_FP_APPEND)
			{
			if (num & BIO_FP_READ)
				BUF_strlcpy(p,"a+",sizeof p);
			else	BUF_strlcpy(p,"a",sizeof p);
			}
		else if ((num & BIO_FP_READ) && (num & BIO_FP_WRITE))
			BUF_strlcpy(p,"r+",sizeof p);
		else if (num & BIO_FP_WRITE)
			BUF_strlcpy(p,"w",sizeof p);
		else if (num & BIO_FP_READ)
			BUF_strlcpy(p,"r",sizeof p);
		else
			{
			BIOerr(BIO_F_FILE_CTRL,BIO_R_BAD_FOPEN_MODE);
			ret=0;
			break;
			}
#if defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_OS2) || defined(OPENSSL_SYS_WIN32_CYGWIN)
		if (!(num & BIO_FP_TEXT))
			strcat(p,"b");
		else
			strcat(p,"t");
#endif
#if defined(OPENSSL_SYS_NETWARE)
		if (!(num & BIO_FP_TEXT))
			strcat(p,"b");
		else
			strcat(p,"t");
#endif
		fp=fopen(ptr,p);
		if (fp == NULL)
			{
			SYSerr(SYS_F_FOPEN,get_last_sys_error());
			ERR_add_error_data(5,"fopen('",ptr,"','",p,"')");
			BIOerr(BIO_F_FILE_CTRL,ERR_R_SYS_LIB);
			ret=0;
			break;
			}
		b->ptr=fp;
		b->init=1;
		BIO_clear_flags(b,BIO_FLAGS_UPLINK); /* we did fopen -> we disengage UPLINK */
		break;
	case BIO_C_GET_FILE_PTR:
		/* the ptr parameter is actually a FILE ** in this case. */
		if (ptr != NULL)
			{
			fpp=(FILE **)ptr;
			*fpp=(FILE *)b->ptr;
			}
		break;
	case BIO_CTRL_GET_CLOSE:
		ret=(long)b->shutdown;
		break;
	case BIO_CTRL_SET_CLOSE:
		b->shutdown=(int)num;
		break;
	case BIO_CTRL_FLUSH:
		if (b->flags&BIO_FLAGS_UPLINK)
			UP_fflush(b->ptr);
		else
			fflush((FILE *)b->ptr);
		break;
	case BIO_CTRL_DUP:
		ret=1;
		break;

	case BIO_CTRL_WPENDING:
	case BIO_CTRL_PENDING:
	case BIO_CTRL_PUSH:
	case BIO_CTRL_POP:
	default:
		ret=0;
		break;
		}
	return(ret);
	}

static int MS_CALLBACK file_gets(BIO *bp, char *buf, int size)
	{
	int ret=0;

	buf[0]='\0';
	if (bp->flags&BIO_FLAGS_UPLINK)
		{
		if (!UP_fgets(buf,size,bp->ptr))
			goto err;
		}
	else
		{
		if (!fgets(buf,size,(FILE *)bp->ptr))
			goto err;
		}
	if (buf[0] != '\0')
		ret=strlen(buf);
	err:
	return(ret);
	}

static int MS_CALLBACK file_puts(BIO *bp, const char *str)
	{
	int n,ret;

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

#endif /* OPENSSL_NO_STDIO */

#endif /* HEADER_BSS_FILE_C */
Commit	Line	Data
d02b48c6	1	/* crypto/bio/bss_file.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
3e8042c3	59	/*-
58964a49 RE	60	* 03-Dec-1997 rdenny@dc3.com Fix bug preventing use of stdin/stdout
	61	* with binary data (e.g. asn1parse -inform DER < xxx) under
	62	* Windows
	63	*/
	64
	65	#ifndef HEADER_BSS_FILE_C
	66	#define HEADER_BSS_FILE_C
	67
727c9b80 AP	68	#if defined(__linux) \|\| defined(__sun) \|\| defined(__hpux)
	69	/* Following definition aliases fopen to fopen64 on above mentioned
	70	* platforms. This makes it possible to open and sequentially access
	71	* files larger than 2GB from 32-bit application. It does not allow to
	72	* traverse them beyond 2GB with fseek/ftell, but on the other hand no
	73	* 32-bit platform permits that, not with fseek/ftell. Not to mention
	74	* that breaking 2GB limit for seeking would require surgery to our
	75	* API. But sequential access suffices for practical cases when you
	76	* can run into large files, such as fingerprinting, so we can let API
	77	* alone. For reference, the list of 32-bit platforms which allow for
	78	* sequential access of large files without extra "magic" comprise *BSD,
	79	* Darwin, IRIX...
	80	*/
	81	#ifndef _FILE_OFFSET_BITS
	82	#define _FILE_OFFSET_BITS 64
	83	#endif
	84	#endif
	85
d02b48c6 RE	86	#include <stdio.h>
	87	#include <errno.h>
	88	#include "cryptlib.h"
ea1b02db	89	#include "bio_lcl.h"
ec577822	90	#include <openssl/err.h>
d02b48c6	91
3b0e61a8 DSH	92	#if defined(OPENSSL_SYS_NETWARE) && defined(NETWARE_CLIB)
	93	#include <nwfileio.h>
	94	#endif
	95
cf1b7d96	96	#if !defined(OPENSSL_NO_STDIO)
58964a49	97
0e1c0612 UM	98	static int MS_CALLBACK file_write(BIO h, const char buf, int num);
	99	static int MS_CALLBACK file_read(BIO h, char buf, int size);
	100	static int MS_CALLBACK file_puts(BIO h, const char str);
	101	static int MS_CALLBACK file_gets(BIO h, char str, int size);
	102	static long MS_CALLBACK file_ctrl(BIO h, int cmd, long arg1, void arg2);
d02b48c6 RE	103	static int MS_CALLBACK file_new(BIO *h);
d02b48c6 RE	104	static int MS_CALLBACK file_free(BIO *data);
d02b48c6 RE	105	static BIO_METHOD methods_filep=
d02b48c6 RE	106	{
58964a49 RE	107	BIO_TYPE_FILE,
58964a49 RE	108	"FILE pointer",
d02b48c6 RE	109	file_write,
	110	file_read,
	111	file_puts,
	112	file_gets,
	113	file_ctrl,
	114	file_new,
	115	file_free,
d3442bc7	116	NULL,
d02b48c6 RE	117	};
d02b48c6 RE	118
72fbe87d	119	BIO BIO_new_file(const char filename, const char *mode)
d02b48c6 RE	120	{
	121	BIO *ret;
	122	FILE *file;
	123
	124	if ((file=fopen(filename,mode)) == NULL)
	125	{
58964a49 RE	126	SYSerr(SYS_F_FOPEN,get_last_sys_error());
58964a49 RE	127	ERR_add_error_data(5,"fopen('",filename,"','",mode,"')");
a14e2d9d	128	if (errno == ENOENT)
0fc5cf08 BL	129	BIOerr(BIO_F_BIO_NEW_FILE,BIO_R_NO_SUCH_FILE);
	130	else
	131	BIOerr(BIO_F_BIO_NEW_FILE,ERR_R_SYS_LIB);
d02b48c6 RE	132	return(NULL);
d02b48c6 RE	133	}
58964a49	134	if ((ret=BIO_new(BIO_s_file_internal())) == NULL)
22d1087e NL	135	{
22d1087e NL	136	fclose(file);
d02b48c6	137	return(NULL);
22d1087e	138	}
d02b48c6	139
ea1b02db	140	BIO_clear_flags(ret,BIO_FLAGS_UPLINK); /* we did fopen -> we disengage UPLINK */
d02b48c6 RE	141	BIO_set_fp(ret,file,BIO_CLOSE);
	142	return(ret);
	143	}
	144
6b691a5c	145	BIO BIO_new_fp(FILE stream, int close_flag)
d02b48c6 RE	146	{
	147	BIO *ret;
	148
	149	if ((ret=BIO_new(BIO_s_file())) == NULL)
	150	return(NULL);
d02b48c6	151
ea1b02db	152	BIO_set_flags(ret,BIO_FLAGS_UPLINK); /* redundant, left for documentation puposes */
d02b48c6 RE	153	BIO_set_fp(ret,stream,close_flag);
	154	return(ret);
	155	}
d02b48c6	156
6b691a5c	157	BIO_METHOD *BIO_s_file(void)
d02b48c6 RE	158	{
	159	return(&methods_filep);
	160	}
	161
6b691a5c	162	static int MS_CALLBACK file_new(BIO *bi)
d02b48c6 RE	163	{
	164	bi->init=0;
	165	bi->num=0;
	166	bi->ptr=NULL;
ea1b02db	167	bi->flags=BIO_FLAGS_UPLINK; /* default to UPLINK */
d02b48c6 RE	168	return(1);
	169	}
	170
6b691a5c	171	static int MS_CALLBACK file_free(BIO *a)
d02b48c6 RE	172	{
	173	if (a == NULL) return(0);
	174	if (a->shutdown)
	175	{
	176	if ((a->init) && (a->ptr != NULL))
	177	{
ea1b02db AP	178	if (a->flags&BIO_FLAGS_UPLINK)
	179	UP_fclose (a->ptr);
	180	else
	181	fclose (a->ptr);
d02b48c6	182	a->ptr=NULL;
ea1b02db	183	a->flags=BIO_FLAGS_UPLINK;
d02b48c6 RE	184	}
	185	a->init=0;
	186	}
	187	return(1);
	188	}
	189
6b691a5c	190	static int MS_CALLBACK file_read(BIO b, char out, int outl)
d02b48c6 RE	191	{
	192	int ret=0;
	193
	194	if (b->init && (out != NULL))
	195	{
ea1b02db AP	196	if (b->flags&BIO_FLAGS_UPLINK)
	197	ret=UP_fread(out,1,(int)outl,b->ptr);
	198	else
	199	ret=fread(out,1,(int)outl,(FILE *)b->ptr);
	200	if(ret == 0 && (b->flags&BIO_FLAGS_UPLINK)?UP_ferror((FILE )b->ptr):ferror((FILE )b->ptr))
d15711ef BL	201	{
	202	SYSerr(SYS_F_FREAD,get_last_sys_error());
	203	BIOerr(BIO_F_FILE_READ,ERR_R_SYS_LIB);
	204	ret=-1;
	205	}
d02b48c6 RE	206	}
	207	return(ret);
	208	}
	209
0e1c0612	210	static int MS_CALLBACK file_write(BIO b, const char in, int inl)
d02b48c6 RE	211	{
	212	int ret=0;
	213
	214	if (b->init && (in != NULL))
	215	{
ea1b02db AP	216	if (b->flags&BIO_FLAGS_UPLINK)
	217	ret=UP_fwrite(in,(int)inl,1,b->ptr);
	218	else
	219	ret=fwrite(in,(int)inl,1,(FILE *)b->ptr);
	220	if (ret)
d02b48c6 RE	221	ret=inl;
d02b48c6 RE	222	/* ret=fwrite(in,1,(int)inl,(FILE )b->ptr); /
657e60fa	223	/* according to Tim Hudson <tjh@cryptsoft.com>, the commented
d02b48c6 RE	224	* out version above can cause 'inl' write calls under
	225	* some stupid stdio implementations (VMS) */
	226	}
	227	return(ret);
	228	}
	229
0e1c0612	230	static long MS_CALLBACK file_ctrl(BIO b, int cmd, long num, void ptr)
d02b48c6 RE	231	{
	232	long ret=1;
	233	FILE fp=(FILE )b->ptr;
	234	FILE **fpp;
	235	char p[4];
	236
	237	switch (cmd)
	238	{
dfeab068	239	case BIO_C_FILE_SEEK:
d02b48c6	240	case BIO_CTRL_RESET:
ea1b02db AP	241	if (b->flags&BIO_FLAGS_UPLINK)
	242	ret=(long)UP_fseek(b->ptr,num,0);
	243	else
	244	ret=(long)fseek(fp,num,0);
d02b48c6 RE	245	break;
d02b48c6 RE	246	case BIO_CTRL_EOF:
ea1b02db AP	247	if (b->flags&BIO_FLAGS_UPLINK)
	248	ret=(long)UP_feof(fp);
	249	else
	250	ret=(long)feof(fp);
d02b48c6	251	break;
dfeab068	252	case BIO_C_FILE_TELL:
d02b48c6	253	case BIO_CTRL_INFO:
ea1b02db AP	254	if (b->flags&BIO_FLAGS_UPLINK)
	255	ret=UP_ftell(b->ptr);
	256	else
	257	ret=ftell(fp);
d02b48c6 RE	258	break;
	259	case BIO_C_SET_FILE_PTR:
	260	file_free(b);
79479f02	261	b->shutdown=(int)num&BIO_CLOSE;
ea1b02db	262	b->ptr=ptr;
d02b48c6	263	b->init=1;
38a17571 AP	264	#if BIO_FLAGS_UPLINK!=0
	265	#if defined(__MINGW32__) && defined(__MSVCRT__) && !defined(_IOB_ENTRIES)
	266	#define _IOB_ENTRIES 20
	267	#endif
	268	#if defined(_IOB_ENTRIES)
ea1b02db AP	269	/* Safety net to catch purely internal BIO_set_fp calls */
	270	if ((size_t)ptr >= (size_t)stdin &&
	271	(size_t)ptr < (size_t)(stdin+_IOB_ENTRIES))
	272	BIO_clear_flags(b,BIO_FLAGS_UPLINK);
	273	#endif
38a17571	274	#endif
f1502a49	275	#ifdef UP_fsetmod
ea1b02db	276	if (b->flags&BIO_FLAGS_UPLINK)
6b0be9c7	277	UP_fsetmod(b->ptr,(char)((num&BIO_FP_TEXT)?'t':'b'));
ea1b02db AP	278	else
ea1b02db AP	279	#endif
18a63331	280	{
7f3ba942	281	#if defined(OPENSSL_SYS_WINDOWS)
f17c4561	282	int fd = _fileno((FILE*)ptr);
7f3ba942 RL	283	if (num & BIO_FP_TEXT)
	284	_setmode(fd,_O_TEXT);
	285	else
	286	_setmode(fd,_O_BINARY);
4d8743f4	287	#elif defined(OPENSSL_SYS_NETWARE) && defined(NETWARE_CLIB)
e703b465	288	int fd = fileno((FILE*)ptr);
4d8743f4 RL	289	/* Under CLib there are differences in file modes
	290	*/
	291	if (num & BIO_FP_TEXT)
3b0e61a8	292	setmode(fd,O_TEXT);
4d8743f4	293	else
3b0e61a8	294	setmode(fd,O_BINARY);
7f3ba942	295	#elif defined(OPENSSL_SYS_MSDOS)
e703b465	296	int fd = fileno((FILE*)ptr);
58964a49 RE	297	/* Set correct text/binary mode */
58964a49 RE	298	if (num & BIO_FP_TEXT)
7f3ba942 RL	299	_setmode(fd,_O_TEXT);
7f3ba942 RL	300	/* Dangerous to set stdin/stdout to raw (unless redirected) */
58964a49	301	else
7f3ba942 RL	302	{
	303	if (fd == STDIN_FILENO \|\| fd == STDOUT_FILENO)
	304	{
	305	if (isatty(fd) <= 0)
	306	_setmode(fd,_O_BINARY);
	307	}
	308	else
	309	_setmode(fd,_O_BINARY);
	310	}
dc01b6b1	311	#elif defined(OPENSSL_SYS_OS2)
e703b465	312	int fd = fileno((FILE*)ptr);
dc01b6b1	313	if (num & BIO_FP_TEXT)
18a63331	314	setmode(fd, O_TEXT);
dc01b6b1	315	else
18a63331	316	setmode(fd, O_BINARY);
58964a49	317	#endif
18a63331	318	}
d02b48c6 RE	319	break;
	320	case BIO_C_SET_FILENAME:
	321	file_free(b);
	322	b->shutdown=(int)num&BIO_CLOSE;
	323	if (num & BIO_FP_APPEND)
	324	{
	325	if (num & BIO_FP_READ)
d420ac2c RL	326	BUF_strlcpy(p,"a+",sizeof p);
d420ac2c RL	327	else BUF_strlcpy(p,"a",sizeof p);
d02b48c6 RE	328	}
d02b48c6 RE	329	else if ((num & BIO_FP_READ) && (num & BIO_FP_WRITE))
d420ac2c	330	BUF_strlcpy(p,"r+",sizeof p);
d02b48c6	331	else if (num & BIO_FP_WRITE)
d420ac2c	332	BUF_strlcpy(p,"w",sizeof p);
d02b48c6	333	else if (num & BIO_FP_READ)
d420ac2c	334	BUF_strlcpy(p,"r",sizeof p);
d02b48c6 RE	335	else
	336	{
	337	BIOerr(BIO_F_FILE_CTRL,BIO_R_BAD_FOPEN_MODE);
	338	ret=0;
	339	break;
	340	}
de421076	341	#if defined(OPENSSL_SYS_MSDOS) \|\| defined(OPENSSL_SYS_WINDOWS) \|\| defined(OPENSSL_SYS_OS2) \|\| defined(OPENSSL_SYS_WIN32_CYGWIN)
d02b48c6 RE	342	if (!(num & BIO_FP_TEXT))
	343	strcat(p,"b");
	344	else
	345	strcat(p,"t");
	346	#endif
4d8743f4 RL	347	#if defined(OPENSSL_SYS_NETWARE)
	348	if (!(num & BIO_FP_TEXT))
	349	strcat(p,"b");
	350	else
	351	strcat(p,"t");
	352	#endif
ea1b02db	353	fp=fopen(ptr,p);
d02b48c6 RE	354	if (fp == NULL)
d02b48c6 RE	355	{
58964a49 RE	356	SYSerr(SYS_F_FOPEN,get_last_sys_error());
58964a49 RE	357	ERR_add_error_data(5,"fopen('",ptr,"','",p,"')");
d02b48c6 RE	358	BIOerr(BIO_F_FILE_CTRL,ERR_R_SYS_LIB);
	359	ret=0;
	360	break;
	361	}
ea1b02db	362	b->ptr=fp;
d02b48c6	363	b->init=1;
ea1b02db	364	BIO_clear_flags(b,BIO_FLAGS_UPLINK); /* we did fopen -> we disengage UPLINK */
d02b48c6 RE	365	break;
	366	case BIO_C_GET_FILE_PTR:
	367	/* the ptr parameter is actually a FILE ** in this case. */
	368	if (ptr != NULL)
	369	{
	370	fpp=(FILE **)ptr;
	371	fpp=(FILE )b->ptr;
	372	}
	373	break;
	374	case BIO_CTRL_GET_CLOSE:
	375	ret=(long)b->shutdown;
	376	break;
	377	case BIO_CTRL_SET_CLOSE:
	378	b->shutdown=(int)num;
	379	break;
	380	case BIO_CTRL_FLUSH:
ea1b02db AP	381	if (b->flags&BIO_FLAGS_UPLINK)
	382	UP_fflush(b->ptr);
	383	else
	384	fflush((FILE *)b->ptr);
d02b48c6 RE	385	break;
	386	case BIO_CTRL_DUP:
	387	ret=1;
	388	break;
	389
	390	case BIO_CTRL_WPENDING:
	391	case BIO_CTRL_PENDING:
	392	case BIO_CTRL_PUSH:
	393	case BIO_CTRL_POP:
	394	default:
	395	ret=0;
	396	break;
	397	}
	398	return(ret);
	399	}
	400
6b691a5c	401	static int MS_CALLBACK file_gets(BIO bp, char buf, int size)
d02b48c6 RE	402	{
	403	int ret=0;
	404
	405	buf[0]='\0';
049ced2c	406	if (bp->flags&BIO_FLAGS_UPLINK)
91ca3320 DSH	407	{
	408	if (!UP_fgets(buf,size,bp->ptr))
	409	goto err;
	410	}
844b0e60	411	else
91ca3320 DSH	412	{
	413	if (!fgets(buf,size,(FILE *)bp->ptr))
	414	goto err;
	415	}
d02b48c6 RE	416	if (buf[0] != '\0')
d02b48c6 RE	417	ret=strlen(buf);
91ca3320	418	err:
d02b48c6 RE	419	return(ret);
	420	}
	421
0e1c0612	422	static int MS_CALLBACK file_puts(BIO bp, const char str)
d02b48c6 RE	423	{
	424	int n,ret;
	425
	426	n=strlen(str);
	427	ret=file_write(bp,str,n);
	428	return(ret);
	429	}
	430
cf1b7d96	431	#endif /* OPENSSL_NO_STDIO */
58964a49 RE	432
	433	#endif /* HEADER_BSS_FILE_C */
	434
	435