472 lines
13 KiB
C
472 lines
13 KiB
C
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/* crypto/bio/bss_file.c */
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/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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* All rights reserved.
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*
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* This package is an SSL implementation written
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* by Eric Young (eay@cryptsoft.com).
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* The implementation was written so as to conform with Netscapes SSL.
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*
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* This library is free for commercial and non-commercial use as long as
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* the following conditions are aheared to. The following conditions
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* apply to all code found in this distribution, be it the RC4, RSA,
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* lhash, DES, etc., code; not just the SSL code. The SSL documentation
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* included with this distribution is covered by the same copyright terms
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* except that the holder is Tim Hudson (tjh@cryptsoft.com).
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*
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* Copyright remains Eric Young's, and as such any Copyright notices in
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* the code are not to be removed.
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* If this package is used in a product, Eric Young should be given attribution
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* as the author of the parts of the library used.
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* This can be in the form of a textual message at program startup or
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* in documentation (online or textual) provided with the package.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* "This product includes cryptographic software written by
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* Eric Young (eay@cryptsoft.com)"
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* The word 'cryptographic' can be left out if the rouines from the library
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* being used are not cryptographic related :-).
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* 4. If you include any Windows specific code (or a derivative thereof) from
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* the apps directory (application code) you must include an acknowledgement:
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* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
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*
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* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* The licence and distribution terms for any publically available version or
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* derivative of this code cannot be changed. i.e. this code cannot simply be
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* copied and put under another distribution licence
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* [including the GNU Public Licence.]
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*/
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/*
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* 03-Dec-1997 rdenny@dc3.com Fix bug preventing use of stdin/stdout
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* with binary data (e.g. asn1parse -inform DER < xxx) under
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* Windows
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*/
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#ifndef HEADER_BSS_FILE_C
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#define HEADER_BSS_FILE_C
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#if defined(__linux) || defined(__sun) || defined(__hpux)
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/* Following definition aliases fopen to fopen64 on above mentioned
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* platforms. This makes it possible to open and sequentially access
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* files larger than 2GB from 32-bit application. It does not allow to
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* traverse them beyond 2GB with fseek/ftell, but on the other hand *no*
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* 32-bit platform permits that, not with fseek/ftell. Not to mention
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* that breaking 2GB limit for seeking would require surgery to *our*
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* API. But sequential access suffices for practical cases when you
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* can run into large files, such as fingerprinting, so we can let API
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* alone. For reference, the list of 32-bit platforms which allow for
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* sequential access of large files without extra "magic" comprise *BSD,
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* Darwin, IRIX...
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*/
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#ifndef _FILE_OFFSET_BITS
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#define _FILE_OFFSET_BITS 64
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#endif
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#endif
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#include <stdio.h>
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#include <errno.h>
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#include "cryptlib.h"
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#include "bio_lcl.h"
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#include <openssl/err.h>
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#if defined(OPENSSL_SYS_NETWARE) && defined(NETWARE_CLIB)
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#include <nwfileio.h>
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#endif
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#if !defined(OPENSSL_NO_STDIO)
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static int MS_CALLBACK file_write(BIO *h, const char *buf, int num);
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static int MS_CALLBACK file_read(BIO *h, char *buf, int size);
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static int MS_CALLBACK file_puts(BIO *h, const char *str);
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static int MS_CALLBACK file_gets(BIO *h, char *str, int size);
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static long MS_CALLBACK file_ctrl(BIO *h, int cmd, long arg1, void *arg2);
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static int MS_CALLBACK file_new(BIO *h);
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static int MS_CALLBACK file_free(BIO *data);
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static BIO_METHOD methods_filep=
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{
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BIO_TYPE_FILE,
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"FILE pointer",
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file_write,
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file_read,
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file_puts,
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file_gets,
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file_ctrl,
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file_new,
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file_free,
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NULL,
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};
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BIO *BIO_new_file(const char *filename, const char *mode)
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{
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BIO *ret;
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FILE *file=NULL;
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#if defined(_WIN32) && defined(CP_UTF8)
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int sz, len_0 = (int)strlen(filename)+1;
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/*
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* Basically there are three cases to cover: a) filename is
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* pure ASCII string; b) actual UTF-8 encoded string and
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* c) locale-ized string, i.e. one containing 8-bit
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* characters that are meaningful in current system locale.
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* If filename is pure ASCII or real UTF-8 encoded string,
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* MultiByteToWideChar succeeds and _wfopen works. If
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* filename is locale-ized string, chances are that
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* MultiByteToWideChar fails reporting
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* ERROR_NO_UNICODE_TRANSLATION, in which case we fall
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* back to fopen...
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*/
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if ((sz=MultiByteToWideChar(CP_UTF8,MB_ERR_INVALID_CHARS,
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filename,len_0,NULL,0))>0)
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{
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WCHAR wmode[8];
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WCHAR *wfilename = _alloca(sz*sizeof(WCHAR));
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if (MultiByteToWideChar(CP_UTF8,MB_ERR_INVALID_CHARS,
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filename,len_0,wfilename,sz) &&
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MultiByteToWideChar(CP_UTF8,0,mode,strlen(mode)+1,
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wmode,sizeof(wmode)/sizeof(wmode[0])) &&
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(file=_wfopen(wfilename,wmode))==NULL && errno==ENOENT
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) /* UTF-8 decode succeeded, but no file, filename
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* could still have been locale-ized... */
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file = fopen(filename,mode);
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}
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else if (GetLastError()==ERROR_NO_UNICODE_TRANSLATION)
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{
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file = fopen(filename,mode);
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}
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#else
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file=fopen(filename,mode);
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#endif
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if (file == NULL)
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{
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SYSerr(SYS_F_FOPEN,get_last_sys_error());
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ERR_add_error_data(5,"fopen('",filename,"','",mode,"')");
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if (errno == ENOENT)
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BIOerr(BIO_F_BIO_NEW_FILE,BIO_R_NO_SUCH_FILE);
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else
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BIOerr(BIO_F_BIO_NEW_FILE,ERR_R_SYS_LIB);
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return(NULL);
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}
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if ((ret=BIO_new(BIO_s_file())) == NULL)
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{
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fclose(file);
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return(NULL);
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}
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BIO_clear_flags(ret,BIO_FLAGS_UPLINK); /* we did fopen -> we disengage UPLINK */
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BIO_set_fp(ret,file,BIO_CLOSE);
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return(ret);
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}
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BIO *BIO_new_fp(FILE *stream, int close_flag)
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{
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BIO *ret;
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if ((ret=BIO_new(BIO_s_file())) == NULL)
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return(NULL);
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BIO_set_flags(ret,BIO_FLAGS_UPLINK); /* redundant, left for documentation puposes */
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BIO_set_fp(ret,stream,close_flag);
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return(ret);
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}
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BIO_METHOD *BIO_s_file(void)
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{
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return(&methods_filep);
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}
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static int MS_CALLBACK file_new(BIO *bi)
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{
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bi->init=0;
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bi->num=0;
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bi->ptr=NULL;
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bi->flags=BIO_FLAGS_UPLINK; /* default to UPLINK */
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return(1);
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}
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static int MS_CALLBACK file_free(BIO *a)
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{
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if (a == NULL) return(0);
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if (a->shutdown)
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{
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if ((a->init) && (a->ptr != NULL))
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{
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if (a->flags&BIO_FLAGS_UPLINK)
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UP_fclose (a->ptr);
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else
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fclose (a->ptr);
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a->ptr=NULL;
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a->flags=BIO_FLAGS_UPLINK;
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}
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a->init=0;
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}
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return(1);
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}
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static int MS_CALLBACK file_read(BIO *b, char *out, int outl)
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{
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int ret=0;
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if (b->init && (out != NULL))
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{
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if (b->flags&BIO_FLAGS_UPLINK)
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ret=UP_fread(out,1,(int)outl,b->ptr);
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else
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ret=fread(out,1,(int)outl,(FILE *)b->ptr);
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if(ret == 0 && (b->flags&BIO_FLAGS_UPLINK)?UP_ferror((FILE *)b->ptr):ferror((FILE *)b->ptr))
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{
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SYSerr(SYS_F_FREAD,get_last_sys_error());
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BIOerr(BIO_F_FILE_READ,ERR_R_SYS_LIB);
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ret=-1;
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}
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}
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return(ret);
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}
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static int MS_CALLBACK file_write(BIO *b, const char *in, int inl)
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{
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int ret=0;
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if (b->init && (in != NULL))
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{
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if (b->flags&BIO_FLAGS_UPLINK)
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ret=UP_fwrite(in,(int)inl,1,b->ptr);
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else
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ret=fwrite(in,(int)inl,1,(FILE *)b->ptr);
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if (ret)
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ret=inl;
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/* ret=fwrite(in,1,(int)inl,(FILE *)b->ptr); */
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/* according to Tim Hudson <tjh@cryptsoft.com>, the commented
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* out version above can cause 'inl' write calls under
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* some stupid stdio implementations (VMS) */
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}
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return(ret);
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}
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static long MS_CALLBACK file_ctrl(BIO *b, int cmd, long num, void *ptr)
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{
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long ret=1;
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FILE *fp=(FILE *)b->ptr;
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FILE **fpp;
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char p[4];
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switch (cmd)
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{
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case BIO_C_FILE_SEEK:
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case BIO_CTRL_RESET:
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if (b->flags&BIO_FLAGS_UPLINK)
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ret=(long)UP_fseek(b->ptr,num,0);
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else
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ret=(long)fseek(fp,num,0);
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break;
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case BIO_CTRL_EOF:
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if (b->flags&BIO_FLAGS_UPLINK)
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ret=(long)UP_feof(fp);
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else
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ret=(long)feof(fp);
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break;
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case BIO_C_FILE_TELL:
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case BIO_CTRL_INFO:
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if (b->flags&BIO_FLAGS_UPLINK)
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ret=UP_ftell(b->ptr);
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else
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ret=ftell(fp);
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break;
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case BIO_C_SET_FILE_PTR:
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file_free(b);
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b->shutdown=(int)num&BIO_CLOSE;
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b->ptr=ptr;
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b->init=1;
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#if BIO_FLAGS_UPLINK!=0
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#if defined(__MINGW32__) && defined(__MSVCRT__) && !defined(_IOB_ENTRIES)
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#define _IOB_ENTRIES 20
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#endif
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#if defined(_IOB_ENTRIES)
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/* Safety net to catch purely internal BIO_set_fp calls */
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if ((size_t)ptr >= (size_t)stdin &&
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(size_t)ptr < (size_t)(stdin+_IOB_ENTRIES))
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BIO_clear_flags(b,BIO_FLAGS_UPLINK);
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#endif
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#endif
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#ifdef UP_fsetmod
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if (b->flags&BIO_FLAGS_UPLINK)
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UP_fsetmod(b->ptr,(char)((num&BIO_FP_TEXT)?'t':'b'));
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else
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#endif
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{
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#if defined(OPENSSL_SYS_WINDOWS)
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int fd = _fileno((FILE*)ptr);
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if (num & BIO_FP_TEXT)
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_setmode(fd,_O_TEXT);
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else
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_setmode(fd,_O_BINARY);
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#elif defined(OPENSSL_SYS_NETWARE) && defined(NETWARE_CLIB)
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int fd = fileno((FILE*)ptr);
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/* Under CLib there are differences in file modes */
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if (num & BIO_FP_TEXT)
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setmode(fd,O_TEXT);
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else
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setmode(fd,O_BINARY);
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#elif defined(OPENSSL_SYS_MSDOS)
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int fd = fileno((FILE*)ptr);
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/* Set correct text/binary mode */
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if (num & BIO_FP_TEXT)
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_setmode(fd,_O_TEXT);
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/* Dangerous to set stdin/stdout to raw (unless redirected) */
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else
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{
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if (fd == STDIN_FILENO || fd == STDOUT_FILENO)
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{
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if (isatty(fd) <= 0)
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_setmode(fd,_O_BINARY);
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}
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else
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_setmode(fd,_O_BINARY);
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}
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#elif defined(OPENSSL_SYS_OS2) || defined(OPENSSL_SYS_WIN32_CYGWIN)
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int fd = fileno((FILE*)ptr);
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if (num & BIO_FP_TEXT)
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setmode(fd, O_TEXT);
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else
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setmode(fd, O_BINARY);
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#endif
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}
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break;
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||
|
|
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]='\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 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 */
|
||
|
|
|
||
|
|
|