sl@0: /* crypto/bio/bss_file.c */
sl@0: /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
sl@0:  * All rights reserved.
sl@0:  *
sl@0:  * This package is an SSL implementation written
sl@0:  * by Eric Young (eay@cryptsoft.com).
sl@0:  * The implementation was written so as to conform with Netscapes SSL.
sl@0:  * 
sl@0:  * This library is free for commercial and non-commercial use as long as
sl@0:  * the following conditions are aheared to.  The following conditions
sl@0:  * apply to all code found in this distribution, be it the RC4, RSA,
sl@0:  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
sl@0:  * included with this distribution is covered by the same copyright terms
sl@0:  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
sl@0:  * 
sl@0:  * Copyright remains Eric Young's, and as such any Copyright notices in
sl@0:  * the code are not to be removed.
sl@0:  * If this package is used in a product, Eric Young should be given attribution
sl@0:  * as the author of the parts of the library used.
sl@0:  * This can be in the form of a textual message at program startup or
sl@0:  * in documentation (online or textual) provided with the package.
sl@0:  * 
sl@0:  * Redistribution and use in source and binary forms, with or without
sl@0:  * modification, are permitted provided that the following conditions
sl@0:  * are met:
sl@0:  * 1. Redistributions of source code must retain the copyright
sl@0:  *    notice, this list of conditions and the following disclaimer.
sl@0:  * 2. Redistributions in binary form must reproduce the above copyright
sl@0:  *    notice, this list of conditions and the following disclaimer in the
sl@0:  *    documentation and/or other materials provided with the distribution.
sl@0:  * 3. All advertising materials mentioning features or use of this software
sl@0:  *    must display the following acknowledgement:
sl@0:  *    "This product includes cryptographic software written by
sl@0:  *     Eric Young (eay@cryptsoft.com)"
sl@0:  *    The word 'cryptographic' can be left out if the rouines from the library
sl@0:  *    being used are not cryptographic related :-).
sl@0:  * 4. If you include any Windows specific code (or a derivative thereof) from 
sl@0:  *    the apps directory (application code) you must include an acknowledgement:
sl@0:  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
sl@0:  * 
sl@0:  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
sl@0:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
sl@0:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
sl@0:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
sl@0:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
sl@0:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
sl@0:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
sl@0:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
sl@0:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
sl@0:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
sl@0:  * SUCH DAMAGE.
sl@0:  * 
sl@0:  * The licence and distribution terms for any publically available version or
sl@0:  * derivative of this code cannot be changed.  i.e. this code cannot simply be
sl@0:  * copied and put under another distribution licence
sl@0:  * [including the GNU Public Licence.]
sl@0:  */
sl@0: 
sl@0: /*
sl@0:  * 03-Dec-1997	rdenny@dc3.com  Fix bug preventing use of stdin/stdout
sl@0:  *		with binary data (e.g. asn1parse -inform DER < xxx) under
sl@0:  *		Windows
sl@0:  */
sl@0: /*
sl@0:  © Portions copyright (c) 2006 Nokia Corporation.  All rights reserved.
sl@0:  */
sl@0:  
sl@0: 
sl@0: #ifndef HEADER_BSS_FILE_C
sl@0: #define HEADER_BSS_FILE_C
sl@0: 
sl@0: #if defined(__linux) || defined(__sun) || defined(__hpux)
sl@0: /* Following definition aliases fopen to fopen64 on above mentioned
sl@0:  * platforms. This makes it possible to open and sequentially access
sl@0:  * files larger than 2GB from 32-bit application. It does not allow to
sl@0:  * traverse them beyond 2GB with fseek/ftell, but on the other hand *no*
sl@0:  * 32-bit platform permits that, not with fseek/ftell. Not to mention
sl@0:  * that breaking 2GB limit for seeking would require surgery to *our*
sl@0:  * API. But sequential access suffices for practical cases when you
sl@0:  * can run into large files, such as fingerprinting, so we can let API
sl@0:  * alone. For reference, the list of 32-bit platforms which allow for
sl@0:  * sequential access of large files without extra "magic" comprise *BSD,
sl@0:  * Darwin, IRIX...
sl@0:  */
sl@0: #ifndef _FILE_OFFSET_BITS
sl@0: #define _FILE_OFFSET_BITS 64
sl@0: #endif
sl@0: #endif
sl@0: 
sl@0: #include <stdio.h>
sl@0: #include <errno.h>
sl@0: #include "cryptlib.h"
sl@0: #include "bio_lcl.h"
sl@0: #include <openssl/err.h>
sl@0: #if (defined(SYMBIAN) && (defined(__WINSCW__) || defined(__WINS__)))
sl@0: #include "libcrypto_wsd_macros.h"
sl@0: #include "libcrypto_wsd.h"
sl@0: #endif
sl@0: 
sl@0: 
sl@0: #if !defined(OPENSSL_NO_STDIO)
sl@0: 
sl@0: static int MS_CALLBACK file_write(BIO *h, const char *buf, int num);
sl@0: static int MS_CALLBACK file_read(BIO *h, char *buf, int size);
sl@0: static int MS_CALLBACK file_puts(BIO *h, const char *str);
sl@0: static int MS_CALLBACK file_gets(BIO *h, char *str, int size);
sl@0: static long MS_CALLBACK file_ctrl(BIO *h, int cmd, long arg1, void *arg2);
sl@0: static int MS_CALLBACK file_new(BIO *h);
sl@0: static int MS_CALLBACK file_free(BIO *data);
sl@0: #ifndef EMULATOR
sl@0: static BIO_METHOD methods_filep=
sl@0: 	{
sl@0: 	BIO_TYPE_FILE,
sl@0: 	"FILE pointer",
sl@0: 	file_write,
sl@0: 	file_read,
sl@0: 	file_puts,
sl@0: 	file_gets,
sl@0: 	file_ctrl,
sl@0: 	file_new,
sl@0: 	file_free,
sl@0: 	NULL,
sl@0: 	};
sl@0: #else
sl@0: GET_STATIC_VAR_FROM_TLS(methods_filep,bss_file,BIO_METHOD)
sl@0: #define methods_filep (*GET_WSD_VAR_NAME(methods_filep,bss_file,s)())
sl@0: const BIO_METHOD temp_s_methods_filep=
sl@0: 	{
sl@0: 	BIO_TYPE_FILE,
sl@0: 	"FILE pointer",
sl@0: 	file_write,
sl@0: 	file_read,
sl@0: 	file_puts,
sl@0: 	file_gets,
sl@0: 	file_ctrl,
sl@0: 	file_new,
sl@0: 	file_free,
sl@0: 	NULL,
sl@0: 	};
sl@0: 
sl@0: #endif	
sl@0: 	
sl@0: 
sl@0: EXPORT_C BIO *BIO_new_file(const char *filename, const char *mode)
sl@0: 	{
sl@0: 	BIO *ret;
sl@0: 	FILE *file;
sl@0: 
sl@0: 	if ((file=fopen(filename,mode)) == NULL)
sl@0: 		{
sl@0: 		SYSerr(SYS_F_FOPEN,get_last_sys_error());
sl@0: 		ERR_add_error_data(5,"fopen('",filename,"','",mode,"')");
sl@0: 		if (errno == ENOENT)
sl@0: 			BIOerr(BIO_F_BIO_NEW_FILE,BIO_R_NO_SUCH_FILE);
sl@0: 		else
sl@0: 			BIOerr(BIO_F_BIO_NEW_FILE,ERR_R_SYS_LIB);
sl@0: 		return(NULL);
sl@0: 		}
sl@0: 	if ((ret=BIO_new(BIO_s_file_internal())) == NULL)
sl@0: 	{
sl@0: 		fclose(file);
sl@0:   	return(NULL);
sl@0: 	}	
sl@0: 
sl@0: 	BIO_clear_flags(ret,BIO_FLAGS_UPLINK); /* we did fopen -> we disengage UPLINK */
sl@0: 	BIO_set_fp(ret,file,BIO_CLOSE);
sl@0: 	return(ret);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C BIO *BIO_new_fp(FILE *stream, int close_flag)
sl@0: 	{
sl@0: 	BIO *ret;
sl@0: 
sl@0: 	if ((ret=BIO_new(BIO_s_file())) == NULL)
sl@0: 		return(NULL);
sl@0: 
sl@0: 	BIO_set_flags(ret,BIO_FLAGS_UPLINK); /* redundant, left for documentation puposes */
sl@0: 	BIO_set_fp(ret,stream,close_flag);
sl@0: 	return(ret);
sl@0: 	}
sl@0: 
sl@0: EXPORT_C BIO_METHOD *BIO_s_file(void)
sl@0: 	{
sl@0: 	return(&methods_filep);
sl@0: 	}
sl@0: 
sl@0: static int MS_CALLBACK file_new(BIO *bi)
sl@0: 	{
sl@0: 	bi->init=0;
sl@0: 	bi->num=0;
sl@0: 	bi->ptr=NULL;
sl@0: 	bi->flags=BIO_FLAGS_UPLINK; /* default to UPLINK */
sl@0: 	return(1);
sl@0: 	}
sl@0: 
sl@0: static int MS_CALLBACK file_free(BIO *a)
sl@0: 	{
sl@0: 	if (a == NULL) return(0);
sl@0: 	if (a->shutdown)
sl@0: 		{
sl@0: 		if ((a->init) && (a->ptr != NULL))
sl@0: 			{
sl@0: 			if (a->flags&BIO_FLAGS_UPLINK)
sl@0: 				UP_fclose (a->ptr);
sl@0: 			else
sl@0: 				fclose (a->ptr);
sl@0: 			a->ptr=NULL;
sl@0: 			a->flags=BIO_FLAGS_UPLINK;
sl@0: 			}
sl@0: 		a->init=0;
sl@0: 		}
sl@0: 	return(1);
sl@0: 	}
sl@0: 	
sl@0: static int MS_CALLBACK file_read(BIO *b, char *out, int outl)
sl@0: 	{
sl@0: 	int ret=0;
sl@0: 
sl@0: 	if (b->init && (out != NULL))
sl@0: 		{
sl@0: 		if (b->flags&BIO_FLAGS_UPLINK)
sl@0: 			ret=UP_fread(out,1,(int)outl,b->ptr);
sl@0: 		else
sl@0: 			ret=fread(out,1,(int)outl,(FILE *)b->ptr);
sl@0: 		if(ret == 0 && (b->flags&BIO_FLAGS_UPLINK)?UP_ferror((FILE *)b->ptr):ferror((FILE *)b->ptr))
sl@0: 			{
sl@0: 			SYSerr(SYS_F_FREAD,get_last_sys_error());
sl@0: 			BIOerr(BIO_F_FILE_READ,ERR_R_SYS_LIB);
sl@0: 			ret=-1;
sl@0: 			}
sl@0: 		}
sl@0: 	return(ret);
sl@0: 	}
sl@0: 
sl@0: static int MS_CALLBACK file_write(BIO *b, const char *in, int inl)
sl@0: 	{
sl@0: 	int ret=0;
sl@0: 
sl@0: 	if (b->init && (in != NULL))
sl@0: 		{
sl@0: 		if (b->flags&BIO_FLAGS_UPLINK)
sl@0: 			ret=UP_fwrite(in,(int)inl,1,b->ptr);
sl@0: 		else
sl@0: 			ret=fwrite(in,(int)inl,1,(FILE *)b->ptr);
sl@0: 		if (ret)
sl@0: 			ret=inl;
sl@0: 		/* ret=fwrite(in,1,(int)inl,(FILE *)b->ptr); */
sl@0: 		/* according to Tim Hudson <tjh@cryptsoft.com>, the commented
sl@0: 		 * out version above can cause 'inl' write calls under
sl@0: 		 * some stupid stdio implementations (VMS) */
sl@0: 		}
sl@0: 	return(ret);
sl@0: 	}
sl@0: 
sl@0: static long MS_CALLBACK file_ctrl(BIO *b, int cmd, long num, void *ptr)
sl@0: 	{
sl@0: 	long ret=1;
sl@0: 	FILE *fp=(FILE *)b->ptr;
sl@0: 	FILE **fpp;
sl@0: 	char p[4];
sl@0: 
sl@0: 	switch (cmd)
sl@0: 		{
sl@0: 	case BIO_C_FILE_SEEK:
sl@0: 	case BIO_CTRL_RESET:
sl@0: 		if (b->flags&BIO_FLAGS_UPLINK)
sl@0: 			ret=(long)UP_fseek(b->ptr,num,0);
sl@0: 		else
sl@0: 			ret=(long)fseek(fp,num,0);
sl@0: 		break;
sl@0: 	case BIO_CTRL_EOF:
sl@0: 		if (b->flags&BIO_FLAGS_UPLINK)
sl@0: 			ret=(long)UP_feof(fp);
sl@0: 		else
sl@0: 			ret=(long)feof(fp);
sl@0: 		break;
sl@0: 	case BIO_C_FILE_TELL:
sl@0: 	case BIO_CTRL_INFO:
sl@0: 		if (b->flags&BIO_FLAGS_UPLINK)
sl@0: 			ret=UP_ftell(b->ptr);
sl@0: 		else
sl@0: 			ret=ftell(fp);
sl@0: 		break;
sl@0: 	case BIO_C_SET_FILE_PTR:
sl@0: 		file_free(b);
sl@0: 		b->shutdown=(int)num&BIO_CLOSE;
sl@0: 		b->ptr=ptr;
sl@0: 		b->init=1;
sl@0: #if BIO_FLAGS_UPLINK!=0
sl@0: #if defined(__MINGW32__) && defined(__MSVCRT__) && !defined(_IOB_ENTRIES)
sl@0: #define _IOB_ENTRIES 20
sl@0: #endif
sl@0: #if defined(_IOB_ENTRIES)
sl@0: 		/* Safety net to catch purely internal BIO_set_fp calls */
sl@0: 		if ((size_t)ptr >= (size_t)stdin &&
sl@0: 		    (size_t)ptr <  (size_t)(stdin+_IOB_ENTRIES))
sl@0: 			BIO_clear_flags(b,BIO_FLAGS_UPLINK);
sl@0: #endif
sl@0: #endif
sl@0: #ifdef UP_fsetmode
sl@0: 		if (b->flags&BIO_FLAGS_UPLINK)
sl@0: 			UP_fsetmode(b->ptr,num&BIO_FP_TEXT?'t':'b');
sl@0: 		else
sl@0: #endif
sl@0: 		{
sl@0: #if defined(OPENSSL_SYS_WINDOWS)
sl@0: 		int fd = fileno((FILE*)ptr);
sl@0: 		if (num & BIO_FP_TEXT)
sl@0: 			_setmode(fd,_O_TEXT);
sl@0: 		else
sl@0: 			_setmode(fd,_O_BINARY);
sl@0: #elif defined(OPENSSL_SYS_NETWARE) && defined(NETWARE_CLIB)
sl@0: 		int fd = fileno((FILE*)ptr);
sl@0:          /* Under CLib there are differences in file modes
sl@0:          */
sl@0: 		if (num & BIO_FP_TEXT)
sl@0: 			_setmode(fd,O_TEXT);
sl@0: 		else
sl@0: 			_setmode(fd,O_BINARY);
sl@0: #elif defined(OPENSSL_SYS_MSDOS)
sl@0: 		int fd = fileno((FILE*)ptr);
sl@0: 		/* Set correct text/binary mode */
sl@0: 		if (num & BIO_FP_TEXT)
sl@0: 			_setmode(fd,_O_TEXT);
sl@0: 		/* Dangerous to set stdin/stdout to raw (unless redirected) */
sl@0: 		else
sl@0: 			{
sl@0: 			if (fd == STDIN_FILENO || fd == STDOUT_FILENO)
sl@0: 				{
sl@0: 				if (isatty(fd) <= 0)
sl@0: 					_setmode(fd,_O_BINARY);
sl@0: 				}
sl@0: 			else
sl@0: 				_setmode(fd,_O_BINARY);
sl@0: 			}
sl@0: #elif defined(OPENSSL_SYS_OS2)
sl@0: 		int fd = fileno((FILE*)ptr);
sl@0: 		if (num & BIO_FP_TEXT)
sl@0: 			setmode(fd, O_TEXT);
sl@0: 		else
sl@0: 			setmode(fd, O_BINARY);
sl@0: #endif
sl@0: 		}
sl@0: 		break;
sl@0: 	case BIO_C_SET_FILENAME:
sl@0: 		file_free(b);
sl@0: 		b->shutdown=(int)num&BIO_CLOSE;
sl@0: 		if (num & BIO_FP_APPEND)
sl@0: 			{
sl@0: 			if (num & BIO_FP_READ)
sl@0: 				BUF_strlcpy(p,"a+",sizeof p);
sl@0: 			else	BUF_strlcpy(p,"a",sizeof p);
sl@0: 			}
sl@0: 		else if ((num & BIO_FP_READ) && (num & BIO_FP_WRITE))
sl@0: 			BUF_strlcpy(p,"r+",sizeof p);
sl@0: 		else if (num & BIO_FP_WRITE)
sl@0: 			BUF_strlcpy(p,"w",sizeof p);
sl@0: 		else if (num & BIO_FP_READ)
sl@0: 			BUF_strlcpy(p,"r",sizeof p);
sl@0: 		else
sl@0: 			{
sl@0: 			BIOerr(BIO_F_FILE_CTRL,BIO_R_BAD_FOPEN_MODE);
sl@0: 			ret=0;
sl@0: 			break;
sl@0: 			}
sl@0: #if defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_OS2) || defined(OPENSSL_SYS_WIN32_CYGWIN)
sl@0: 		if (!(num & BIO_FP_TEXT))
sl@0: 			strcat(p,"b");
sl@0: 		else
sl@0: 			strcat(p,"t");
sl@0: #endif
sl@0: #if defined(OPENSSL_SYS_NETWARE)
sl@0: 		if (!(num & BIO_FP_TEXT))
sl@0: 			strcat(p,"b");
sl@0: 		else
sl@0: 			strcat(p,"t");
sl@0: #endif
sl@0: 		fp=fopen(ptr,p);
sl@0: 		if (fp == NULL)
sl@0: 			{
sl@0: 			SYSerr(SYS_F_FOPEN,get_last_sys_error());
sl@0: 			ERR_add_error_data(5,"fopen('",ptr,"','",p,"')");
sl@0: 			BIOerr(BIO_F_FILE_CTRL,ERR_R_SYS_LIB);
sl@0: 			ret=0;
sl@0: 			break;
sl@0: 			}
sl@0: 		b->ptr=fp;
sl@0: 		b->init=1;
sl@0: 		BIO_clear_flags(b,BIO_FLAGS_UPLINK); /* we did fopen -> we disengage UPLINK */
sl@0: 		break;
sl@0: 	case BIO_C_GET_FILE_PTR:
sl@0: 		/* the ptr parameter is actually a FILE ** in this case. */
sl@0: 		if (ptr != NULL)
sl@0: 			{
sl@0: 			fpp=(FILE **)ptr;
sl@0: 			*fpp=(FILE *)b->ptr;
sl@0: 			}
sl@0: 		break;
sl@0: 	case BIO_CTRL_GET_CLOSE:
sl@0: 		ret=(long)b->shutdown;
sl@0: 		break;
sl@0: 	case BIO_CTRL_SET_CLOSE:
sl@0: 		b->shutdown=(int)num;
sl@0: 		break;
sl@0: 	case BIO_CTRL_FLUSH:
sl@0: 		if (b->flags&BIO_FLAGS_UPLINK)
sl@0: 			UP_fflush(b->ptr);
sl@0: 		else
sl@0: 			fflush((FILE *)b->ptr);
sl@0: 		break;
sl@0: 	case BIO_CTRL_DUP:
sl@0: 		ret=1;
sl@0: 		break;
sl@0: 
sl@0: 	case BIO_CTRL_WPENDING:
sl@0: 	case BIO_CTRL_PENDING:
sl@0: 	case BIO_CTRL_PUSH:
sl@0: 	case BIO_CTRL_POP:
sl@0: 	default:
sl@0: 		ret=0;
sl@0: 		break;
sl@0: 		}
sl@0: 	return(ret);
sl@0: 	}
sl@0: 
sl@0: static int MS_CALLBACK file_gets(BIO *bp, char *buf, int size)
sl@0: 	{
sl@0: 	int ret=0;
sl@0: 
sl@0: 	buf[0]='\0';
sl@0: 	if (bp->flags&BIO_FLAGS_UPLINK)
sl@0: 		UP_fgets(buf,size,bp->ptr);
sl@0: 	else
sl@0: 		fgets(buf,size,(FILE *)bp->ptr);
sl@0: 	if (buf[0] != '\0')
sl@0: 		ret=strlen(buf);
sl@0: 	return(ret);
sl@0: 	}
sl@0: 
sl@0: static int MS_CALLBACK file_puts(BIO *bp, const char *str)
sl@0: 	{
sl@0: 	int n,ret;
sl@0: 
sl@0: 	n=strlen(str);
sl@0: 	ret=file_write(bp,str,n);
sl@0: 	return(ret);
sl@0: 	}
sl@0: 
sl@0: #endif /* OPENSSL_NO_STDIO */
sl@0: 
sl@0: #endif /* HEADER_BSS_FILE_C */
sl@0: 
sl@0: