/* 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#include <stdio.h>#include <errno.h>#include "cryptlib.h"#include <openssl/bio.h>#include <openssl/err.h>#if !defined(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,"')");		BIOerr(BIO_F_BIO_NEW_FILE,ERR_R_SYS_LIB);		return(NULL);		}	if ((ret=BIO_new(BIO_s_file_internal())) == NULL)		return(NULL);	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_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;	return(1);	}static int MS_CALLBACK file_free(BIO *a)	{	if (a == NULL) return(0);	if (a->shutdown)		{		if ((a->init) && (a->ptr != NULL))			{			fclose((FILE *)a->ptr);			a->ptr=NULL;			}		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))		{		ret=fread(out,1,(int)outl,(FILE *)b->ptr);		}	return(ret);	}static int MS_CALLBACK file_write(BIO *b, const char *in, int inl)	{	int ret=0;	if (b->init && (in != NULL))		{		if (fwrite(in,(int)inl,1,(FILE *)b->ptr))			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:		ret=(long)fseek(fp,num,0);		break;	case BIO_CTRL_EOF:		ret=(long)feof(fp);		break;	case BIO_C_FILE_TELL:	case BIO_CTRL_INFO:		ret=ftell(fp);		break;	case BIO_C_SET_FILE_PTR:		file_free(b);		b->shutdown=(int)num&BIO_CLOSE;		b->ptr=(char *)ptr;		b->init=1;#if defined(MSDOS) || defined(WINDOWS)		/* Set correct text/binary mode */		if (num & BIO_FP_TEXT)			_setmode(fileno((FILE *)ptr),_O_TEXT);		else			_setmode(fileno((FILE *)ptr),_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)				strcpy(p,"a+");			else	strcpy(p,"a");			}		else if ((num & BIO_FP_READ) && (num & BIO_FP_WRITE))			strcpy(p,"r+");		else if (num & BIO_FP_WRITE)			strcpy(p,"w");		else if (num & BIO_FP_READ)			strcpy(p,"r");		else			{			BIOerr(BIO_F_FILE_CTRL,BIO_R_BAD_FOPEN_MODE);			ret=0;			break;			}#if defined(MSDOS) || defined(WINDOWS)		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=(char *)fp;		b->init=1;		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:		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';	fgets(buf,size,(FILE *)bp->ptr);	if (buf[0] != '\0')		ret=strlen(buf);	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 /* NO_STDIO */#endif /* HEADER_BSS_FILE_C */