[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 file_write(BIO *h, const char *buf, int num);
static int file_read(BIO *h, char *buf, int size);
static int file_puts(BIO *h, const char *str);
static int file_gets(BIO *h, char *str, int size);
static long file_ctrl(BIO *h, int cmd, long arg1, void *arg2);
static int file_new(BIO *h);
static int 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=NULL;

#if defined(_WIN32) && defined(CP_UTF8)
	int sz, len_0 = (int)strlen(filename)+1;
	DWORD flags;

	/*
	 * Basically there are three cases to cover: a) filename is
	 * pure ASCII string; b) actual UTF-8 encoded string and
	 * c) locale-ized string, i.e. one containing 8-bit
	 * characters that are meaningful in current system locale.
	 * If filename is pure ASCII or real UTF-8 encoded string,
	 * MultiByteToWideChar succeeds and _wfopen works. If
	 * filename is locale-ized string, chances are that
	 * MultiByteToWideChar fails reporting
	 * ERROR_NO_UNICODE_TRANSLATION, in which case we fall
	 * back to fopen...
	 */
	if ((sz=MultiByteToWideChar(CP_UTF8,(flags=MB_ERR_INVALID_CHARS),
					filename,len_0,NULL,0))>0 ||
	    (GetLastError()==ERROR_INVALID_FLAGS &&
	     (sz=MultiByteToWideChar(CP_UTF8,(flags=0),
					filename,len_0,NULL,0))>0)
	   )
		{
		WCHAR  wmode[8];
		WCHAR *wfilename = _alloca(sz*sizeof(WCHAR));

		if (MultiByteToWideChar(CP_UTF8,flags,
					filename,len_0,wfilename,sz) &&
		    MultiByteToWideChar(CP_UTF8,0,mode,strlen(mode)+1,
			    		wmode,sizeof(wmode)/sizeof(wmode[0])) &&
		    (file=_wfopen(wfilename,wmode))==NULL &&
		    (errno==ENOENT || errno==EBADF)
		   )
			{
			/*
			 * UTF-8 decode succeeded, but no file, filename
			 * could still have been locale-ized...
			 */
			file = fopen(filename,mode);
			}
		}
	else if (GetLastError()==ERROR_NO_UNICODE_TRANSLATION)
		{
		file = fopen(filename,mode);
		}
#else
	file=fopen(filename,mode);	
#endif
	if (file == 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())) == 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 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 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 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 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 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) || defined(OPENSSL_SYS_WIN32_CYGWIN)
		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 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 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
23a22b4c	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
8fa6a40b 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
eef0c1f3 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
6d23cf97 RS	98	static int file_write(BIO h, const char buf, int num);
	99	static int file_read(BIO h, char buf, int size);
	100	static int file_puts(BIO h, const char str);
	101	static int file_gets(BIO h, char str, int size);
	102	static long file_ctrl(BIO h, int cmd, long arg1, void arg2);
	103	static int file_new(BIO *h);
	104	static int 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	120	{
bb92e2c8 AP	121	BIO *ret;
bb92e2c8 AP	122	FILE *file=NULL;
d02b48c6	123
d183244b	124	#if defined(_WIN32) && defined(CP_UTF8)
bb92e2c8	125	int sz, len_0 = (int)strlen(filename)+1;
05e4fbf8	126	DWORD flags;
bb92e2c8 AP	127
	128	/*
	129	* Basically there are three cases to cover: a) filename is
	130	* pure ASCII string; b) actual UTF-8 encoded string and
	131	* c) locale-ized string, i.e. one containing 8-bit
	132	* characters that are meaningful in current system locale.
	133	* If filename is pure ASCII or real UTF-8 encoded string,
	134	* MultiByteToWideChar succeeds and _wfopen works. If
	135	* filename is locale-ized string, chances are that
	136	* MultiByteToWideChar fails reporting
	137	* ERROR_NO_UNICODE_TRANSLATION, in which case we fall
	138	* back to fopen...
	139	*/
05e4fbf8 AP	140	if ((sz=MultiByteToWideChar(CP_UTF8,(flags=MB_ERR_INVALID_CHARS),
	141	filename,len_0,NULL,0))>0 \|\|
	142	(GetLastError()==ERROR_INVALID_FLAGS &&
	143	(sz=MultiByteToWideChar(CP_UTF8,(flags=0),
bb92e2c8	144	filename,len_0,NULL,0))>0)
05e4fbf8	145	)
d183244b	146	{
bb92e2c8 AP	147	WCHAR wmode[8];
bb92e2c8 AP	148	WCHAR wfilename = _alloca(szsizeof(WCHAR));
d183244b	149
05e4fbf8	150	if (MultiByteToWideChar(CP_UTF8,flags,
bb92e2c8 AP	151	filename,len_0,wfilename,sz) &&
	152	MultiByteToWideChar(CP_UTF8,0,mode,strlen(mode)+1,
	153	wmode,sizeof(wmode)/sizeof(wmode[0])) &&
05e4fbf8 AP	154	(file=_wfopen(wfilename,wmode))==NULL &&
05e4fbf8 AP	155	(errno==ENOENT \|\| errno==EBADF)
dbd87ffc MC	156	)
	157	{
	158	/*
	159	* UTF-8 decode succeeded, but no file, filename
	160	* could still have been locale-ized...
	161	*/
bb92e2c8	162	file = fopen(filename,mode);
dbd87ffc	163	}
d183244b	164	}
bb92e2c8 AP	165	else if (GetLastError()==ERROR_NO_UNICODE_TRANSLATION)
	166	{
	167	file = fopen(filename,mode);
	168	}
	169	#else
	170	file=fopen(filename,mode);
d183244b AP	171	#endif
d183244b AP	172	if (file == NULL)
d02b48c6	173	{
58964a49 RE	174	SYSerr(SYS_F_FOPEN,get_last_sys_error());
58964a49 RE	175	ERR_add_error_data(5,"fopen('",filename,"','",mode,"')");
a14e2d9d	176	if (errno == ENOENT)
0fc5cf08 BL	177	BIOerr(BIO_F_BIO_NEW_FILE,BIO_R_NO_SUCH_FILE);
	178	else
	179	BIOerr(BIO_F_BIO_NEW_FILE,ERR_R_SYS_LIB);
d02b48c6 RE	180	return(NULL);
d02b48c6 RE	181	}
be7b4458	182	if ((ret=BIO_new(BIO_s_file())) == NULL)
8c5a2bd6 NL	183	{
8c5a2bd6 NL	184	fclose(file);
d02b48c6	185	return(NULL);
8c5a2bd6	186	}
d02b48c6	187
ea1b02db	188	BIO_clear_flags(ret,BIO_FLAGS_UPLINK); /* we did fopen -> we disengage UPLINK */
d02b48c6 RE	189	BIO_set_fp(ret,file,BIO_CLOSE);
	190	return(ret);
	191	}
	192
6b691a5c	193	BIO BIO_new_fp(FILE stream, int close_flag)
d02b48c6 RE	194	{
	195	BIO *ret;
	196
	197	if ((ret=BIO_new(BIO_s_file())) == NULL)
	198	return(NULL);
d02b48c6	199
ea1b02db	200	BIO_set_flags(ret,BIO_FLAGS_UPLINK); /* redundant, left for documentation puposes */
d02b48c6 RE	201	BIO_set_fp(ret,stream,close_flag);
	202	return(ret);
	203	}
d02b48c6	204
6b691a5c	205	BIO_METHOD *BIO_s_file(void)
d02b48c6 RE	206	{
	207	return(&methods_filep);
	208	}
	209
6d23cf97	210	static int file_new(BIO *bi)
d02b48c6 RE	211	{
	212	bi->init=0;
	213	bi->num=0;
	214	bi->ptr=NULL;
ea1b02db	215	bi->flags=BIO_FLAGS_UPLINK; /* default to UPLINK */
d02b48c6 RE	216	return(1);
	217	}
	218
6d23cf97	219	static int file_free(BIO *a)
d02b48c6 RE	220	{
	221	if (a == NULL) return(0);
	222	if (a->shutdown)
	223	{
	224	if ((a->init) && (a->ptr != NULL))
	225	{
ea1b02db AP	226	if (a->flags&BIO_FLAGS_UPLINK)
	227	UP_fclose (a->ptr);
	228	else
	229	fclose (a->ptr);
d02b48c6	230	a->ptr=NULL;
ea1b02db	231	a->flags=BIO_FLAGS_UPLINK;
d02b48c6 RE	232	}
	233	a->init=0;
	234	}
	235	return(1);
	236	}
	237
6d23cf97	238	static int file_read(BIO b, char out, int outl)
d02b48c6 RE	239	{
	240	int ret=0;
	241
	242	if (b->init && (out != NULL))
	243	{
ea1b02db AP	244	if (b->flags&BIO_FLAGS_UPLINK)
	245	ret=UP_fread(out,1,(int)outl,b->ptr);
	246	else
	247	ret=fread(out,1,(int)outl,(FILE *)b->ptr);
	248	if(ret == 0 && (b->flags&BIO_FLAGS_UPLINK)?UP_ferror((FILE )b->ptr):ferror((FILE )b->ptr))
d15711ef BL	249	{
	250	SYSerr(SYS_F_FREAD,get_last_sys_error());
	251	BIOerr(BIO_F_FILE_READ,ERR_R_SYS_LIB);
	252	ret=-1;
	253	}
d02b48c6 RE	254	}
	255	return(ret);
	256	}
	257
6d23cf97	258	static int file_write(BIO b, const char in, int inl)
d02b48c6 RE	259	{
	260	int ret=0;
	261
	262	if (b->init && (in != NULL))
	263	{
ea1b02db AP	264	if (b->flags&BIO_FLAGS_UPLINK)
	265	ret=UP_fwrite(in,(int)inl,1,b->ptr);
	266	else
	267	ret=fwrite(in,(int)inl,1,(FILE *)b->ptr);
	268	if (ret)
d02b48c6 RE	269	ret=inl;
d02b48c6 RE	270	/* ret=fwrite(in,1,(int)inl,(FILE )b->ptr); /
657e60fa	271	/* according to Tim Hudson <tjh@cryptsoft.com>, the commented
d02b48c6 RE	272	* out version above can cause 'inl' write calls under
	273	* some stupid stdio implementations (VMS) */
	274	}
	275	return(ret);
	276	}
	277
6d23cf97	278	static long file_ctrl(BIO b, int cmd, long num, void ptr)
d02b48c6 RE	279	{
	280	long ret=1;
	281	FILE fp=(FILE )b->ptr;
	282	FILE **fpp;
	283	char p[4];
	284
	285	switch (cmd)
	286	{
dfeab068	287	case BIO_C_FILE_SEEK:
d02b48c6	288	case BIO_CTRL_RESET:
ea1b02db AP	289	if (b->flags&BIO_FLAGS_UPLINK)
	290	ret=(long)UP_fseek(b->ptr,num,0);
	291	else
	292	ret=(long)fseek(fp,num,0);
d02b48c6 RE	293	break;
d02b48c6 RE	294	case BIO_CTRL_EOF:
ea1b02db AP	295	if (b->flags&BIO_FLAGS_UPLINK)
	296	ret=(long)UP_feof(fp);
	297	else
	298	ret=(long)feof(fp);
d02b48c6	299	break;
dfeab068	300	case BIO_C_FILE_TELL:
d02b48c6	301	case BIO_CTRL_INFO:
ea1b02db AP	302	if (b->flags&BIO_FLAGS_UPLINK)
	303	ret=UP_ftell(b->ptr);
	304	else
	305	ret=ftell(fp);
d02b48c6 RE	306	break;
	307	case BIO_C_SET_FILE_PTR:
	308	file_free(b);
79479f02	309	b->shutdown=(int)num&BIO_CLOSE;
ea1b02db	310	b->ptr=ptr;
d02b48c6	311	b->init=1;
51ff6bde AP	312	#if BIO_FLAGS_UPLINK!=0
	313	#if defined(__MINGW32__) && defined(__MSVCRT__) && !defined(_IOB_ENTRIES)
	314	#define _IOB_ENTRIES 20
	315	#endif
	316	#if defined(_IOB_ENTRIES)
ea1b02db AP	317	/* Safety net to catch purely internal BIO_set_fp calls */
	318	if ((size_t)ptr >= (size_t)stdin &&
	319	(size_t)ptr < (size_t)(stdin+_IOB_ENTRIES))
	320	BIO_clear_flags(b,BIO_FLAGS_UPLINK);
	321	#endif
51ff6bde	322	#endif
f2fccce4	323	#ifdef UP_fsetmod
ea1b02db	324	if (b->flags&BIO_FLAGS_UPLINK)
3dd30312	325	UP_fsetmod(b->ptr,(char)((num&BIO_FP_TEXT)?'t':'b'));
ea1b02db AP	326	else
ea1b02db AP	327	#endif
18a63331	328	{
7f3ba942	329	#if defined(OPENSSL_SYS_WINDOWS)
e527201f	330	int fd = _fileno((FILE*)ptr);
7f3ba942 RL	331	if (num & BIO_FP_TEXT)
	332	_setmode(fd,_O_TEXT);
	333	else
	334	_setmode(fd,_O_BINARY);
4d8743f4	335	#elif defined(OPENSSL_SYS_NETWARE) && defined(NETWARE_CLIB)
e703b465	336	int fd = fileno((FILE*)ptr);
474b8a97	337	/* Under CLib there are differences in file modes */
4d8743f4	338	if (num & BIO_FP_TEXT)
eef0c1f3	339	setmode(fd,O_TEXT);
4d8743f4	340	else
eef0c1f3	341	setmode(fd,O_BINARY);
7f3ba942	342	#elif defined(OPENSSL_SYS_MSDOS)
e703b465	343	int fd = fileno((FILE*)ptr);
58964a49 RE	344	/* Set correct text/binary mode */
58964a49 RE	345	if (num & BIO_FP_TEXT)
7f3ba942 RL	346	_setmode(fd,_O_TEXT);
7f3ba942 RL	347	/* Dangerous to set stdin/stdout to raw (unless redirected) */
58964a49	348	else
7f3ba942 RL	349	{
	350	if (fd == STDIN_FILENO \|\| fd == STDOUT_FILENO)
	351	{
	352	if (isatty(fd) <= 0)
	353	_setmode(fd,_O_BINARY);
	354	}
	355	else
	356	_setmode(fd,_O_BINARY);
	357	}
474b8a97	358	#elif defined(OPENSSL_SYS_OS2) \|\| defined(OPENSSL_SYS_WIN32_CYGWIN)
e703b465	359	int fd = fileno((FILE*)ptr);
dc01b6b1	360	if (num & BIO_FP_TEXT)
18a63331	361	setmode(fd, O_TEXT);
dc01b6b1	362	else
18a63331	363	setmode(fd, O_BINARY);
58964a49	364	#endif
18a63331	365	}
d02b48c6 RE	366	break;
	367	case BIO_C_SET_FILENAME:
	368	file_free(b);
	369	b->shutdown=(int)num&BIO_CLOSE;
	370	if (num & BIO_FP_APPEND)
	371	{
	372	if (num & BIO_FP_READ)
d420ac2c RL	373	BUF_strlcpy(p,"a+",sizeof p);
d420ac2c RL	374	else BUF_strlcpy(p,"a",sizeof p);
d02b48c6 RE	375	}
d02b48c6 RE	376	else if ((num & BIO_FP_READ) && (num & BIO_FP_WRITE))
d420ac2c	377	BUF_strlcpy(p,"r+",sizeof p);
d02b48c6	378	else if (num & BIO_FP_WRITE)
d420ac2c	379	BUF_strlcpy(p,"w",sizeof p);
d02b48c6	380	else if (num & BIO_FP_READ)
d420ac2c	381	BUF_strlcpy(p,"r",sizeof p);
d02b48c6 RE	382	else
	383	{
	384	BIOerr(BIO_F_FILE_CTRL,BIO_R_BAD_FOPEN_MODE);
	385	ret=0;
	386	break;
	387	}
de421076	388	#if defined(OPENSSL_SYS_MSDOS) \|\| defined(OPENSSL_SYS_WINDOWS) \|\| defined(OPENSSL_SYS_OS2) \|\| defined(OPENSSL_SYS_WIN32_CYGWIN)
d02b48c6 RE	389	if (!(num & BIO_FP_TEXT))
	390	strcat(p,"b");
	391	else
	392	strcat(p,"t");
	393	#endif
4d8743f4 RL	394	#if defined(OPENSSL_SYS_NETWARE)
	395	if (!(num & BIO_FP_TEXT))
	396	strcat(p,"b");
	397	else
	398	strcat(p,"t");
	399	#endif
ea1b02db	400	fp=fopen(ptr,p);
d02b48c6 RE	401	if (fp == NULL)
d02b48c6 RE	402	{
58964a49 RE	403	SYSerr(SYS_F_FOPEN,get_last_sys_error());
58964a49 RE	404	ERR_add_error_data(5,"fopen('",ptr,"','",p,"')");
d02b48c6 RE	405	BIOerr(BIO_F_FILE_CTRL,ERR_R_SYS_LIB);
	406	ret=0;
	407	break;
	408	}
ea1b02db	409	b->ptr=fp;
d02b48c6	410	b->init=1;
ea1b02db	411	BIO_clear_flags(b,BIO_FLAGS_UPLINK); /* we did fopen -> we disengage UPLINK */
d02b48c6 RE	412	break;
	413	case BIO_C_GET_FILE_PTR:
	414	/* the ptr parameter is actually a FILE ** in this case. */
	415	if (ptr != NULL)
	416	{
	417	fpp=(FILE **)ptr;
	418	fpp=(FILE )b->ptr;
	419	}
	420	break;
	421	case BIO_CTRL_GET_CLOSE:
	422	ret=(long)b->shutdown;
	423	break;
	424	case BIO_CTRL_SET_CLOSE:
	425	b->shutdown=(int)num;
	426	break;
	427	case BIO_CTRL_FLUSH:
ea1b02db AP	428	if (b->flags&BIO_FLAGS_UPLINK)
	429	UP_fflush(b->ptr);
	430	else
	431	fflush((FILE *)b->ptr);
d02b48c6 RE	432	break;
	433	case BIO_CTRL_DUP:
	434	ret=1;
	435	break;
	436
	437	case BIO_CTRL_WPENDING:
	438	case BIO_CTRL_PENDING:
	439	case BIO_CTRL_PUSH:
	440	case BIO_CTRL_POP:
	441	default:
	442	ret=0;
	443	break;
	444	}
	445	return(ret);
	446	}
	447
6d23cf97	448	static int file_gets(BIO bp, char buf, int size)
d02b48c6 RE	449	{
	450	int ret=0;
	451
	452	buf[0]='\0';
94c00f3d	453	if (bp->flags&BIO_FLAGS_UPLINK)
c21869fb DSH	454	{
	455	if (!UP_fgets(buf,size,bp->ptr))
	456	goto err;
	457	}
3c2b7367	458	else
c21869fb DSH	459	{
	460	if (!fgets(buf,size,(FILE *)bp->ptr))
	461	goto err;
	462	}
d02b48c6 RE	463	if (buf[0] != '\0')
d02b48c6 RE	464	ret=strlen(buf);
c21869fb	465	err:
d02b48c6 RE	466	return(ret);
	467	}
	468
6d23cf97	469	static int file_puts(BIO bp, const char str)
d02b48c6 RE	470	{
	471	int n,ret;
	472
	473	n=strlen(str);
	474	ret=file_write(bp,str,n);
	475	return(ret);
	476	}
	477
cf1b7d96	478	#endif /* OPENSSL_NO_STDIO */
58964a49 RE	479
	480	#endif /* HEADER_BSS_FILE_C */
	481
	482