bss_file.c
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- /* 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_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_fsetmode
- if (b->flags&BIO_FLAGS_UPLINK)
- UP_fsetmode(b->ptr,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]=' ';
- if (bp->flags&BIO_FLAGS_UPLINK)
- UP_fgets(buf,size,bp->ptr);
- else
- fgets(buf,size,(FILE *)bp->ptr);
- if (buf[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 /* OPENSSL_NO_STDIO */
- #endif /* HEADER_BSS_FILE_C */