crypto/bio/bss_file.c - third_party/openssl - Git at Google

 /* 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 "bio.h"
 #include "err.h"

 #if !defined(NO_STDIO)

 #ifndef NOPROTO
 static int MS_CALLBACK file_write(BIO *h,char *buf,int num);
 static int MS_CALLBACK file_read(BIO *h,char *buf,int size);
 static int MS_CALLBACK file_puts(BIO *h,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,char *arg2);
 static int MS_CALLBACK file_new(BIO *h);
 static int MS_CALLBACK file_free(BIO *data);
 #else
 static int MS_CALLBACK file_write();
 static int MS_CALLBACK file_read();
 static int MS_CALLBACK file_puts();
 static int MS_CALLBACK file_gets();
 static long MS_CALLBACK file_ctrl();
 static int MS_CALLBACK file_new();
 static int MS_CALLBACK file_free();
 #endif

 static BIO_METHOD methods_filep=
 	{
 	BIO_TYPE_FILE,
 	"FILE pointer",
 	file_write,
 	file_read,
 	file_puts,
 	file_gets,
 	file_ctrl,
 	file_new,
 	file_free,
 	};

 BIO *BIO_new_file(filename,mode)
 char *filename;
 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(stream,close_flag)
 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()
 	{
 	return(&methods_filep);
 	}

 static int MS_CALLBACK file_new(bi)
 BIO *bi;
 	{
 	bi->init=0;
 	bi->num=0;
 	bi->ptr=NULL;
 	return(1);
 	}

 static int MS_CALLBACK file_free(a)
 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(b,out,outl)
 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(b,in,inl)
 BIO *b;
 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); */
 		/* acording 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(b,cmd,num,ptr)
 BIO *b;
 int cmd;
 long num;
 char *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;
 		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(bp,buf,size)
 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(bp,str)
 BIO *bp;
 char *str;
 	{
 	int n,ret;

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

 #endif /* NO_STDIO */

 #endif /* HEADER_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

	#include <stdio.h>
	#include <errno.h>
	#include "cryptlib.h"
	#include "bio.h"
	#include "err.h"

	#if !defined(NO_STDIO)

	#ifndef NOPROTO
	static int MS_CALLBACK file_write(BIO h,char buf,int num);
	static int MS_CALLBACK file_read(BIO h,char buf,int size);
	static int MS_CALLBACK file_puts(BIO h,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,char arg2);
	static int MS_CALLBACK file_new(BIO *h);
	static int MS_CALLBACK file_free(BIO *data);
	#else
	static int MS_CALLBACK file_write();
	static int MS_CALLBACK file_read();
	static int MS_CALLBACK file_puts();
	static int MS_CALLBACK file_gets();
	static long MS_CALLBACK file_ctrl();
	static int MS_CALLBACK file_new();
	static int MS_CALLBACK file_free();
	#endif

	static BIO_METHOD methods_filep=
	{
	BIO_TYPE_FILE,
	"FILE pointer",
	file_write,
	file_read,
	file_puts,
	file_gets,
	file_ctrl,
	file_new,
	file_free,
	};

	BIO *BIO_new_file(filename,mode)
	char *filename;
	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(stream,close_flag)
	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()
	{
	return(&methods_filep);
	}

	static int MS_CALLBACK file_new(bi)
	BIO *bi;
	{
	bi->init=0;
	bi->num=0;
	bi->ptr=NULL;
	return(1);
	}

	static int MS_CALLBACK file_free(a)
	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(b,out,outl)
	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(b,in,inl)
	BIO *b;
	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); /
	/* acording 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(b,cmd,num,ptr)
	BIO *b;
	int cmd;
	long num;
	char *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;
	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(bp,buf,size)
	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(bp,str)
	BIO *bp;
	char *str;
	{
	int n,ret;

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

	#endif /* NO_STDIO */

	#endif /* HEADER_BSS_FILE_C */