/* 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_SYS_NETWARE) && defined(NETWARE_CLIB) #include <nwfileio.h> #endif #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=NULL; #if defined(_WIN32) && defined(CP_UTF8) int sz, len_0 = (int)strlen(filename)+1; /* * Basically there are three cases to cover: a) filename is * pure ASCII string; b) actual UTF-8 encoded string and * c) locale-ized string, i.e. one containing 8-bit * characters that are meaningful in current system locale. * If filename is pure ASCII or real UTF-8 encoded string, * MultiByteToWideChar succeeds and _wfopen works. If * filename is locale-ized string, chances are that * MultiByteToWideChar fails reporting * ERROR_NO_UNICODE_TRANSLATION, in which case we fall * back to fopen... */ if ((sz=MultiByteToWideChar(CP_UTF8,MB_ERR_INVALID_CHARS, filename,len_0,NULL,0))>0) { WCHAR wmode[8]; WCHAR *wfilename = _alloca(sz*sizeof(WCHAR)); if (MultiByteToWideChar(CP_UTF8,MB_ERR_INVALID_CHARS, filename,len_0,wfilename,sz) && MultiByteToWideChar(CP_UTF8,0,mode,strlen(mode)+1, wmode,sizeof(wmode)/sizeof(wmode[0])) && (file=_wfopen(wfilename,wmode))==NULL && errno==ENOENT ) /* UTF-8 decode succeeded, but no file, filename * could still have been locale-ized... */ file = fopen(filename,mode); } else if (GetLastError()==ERROR_NO_UNICODE_TRANSLATION) { file = fopen(filename,mode); } #else file=fopen(filename,mode); #endif if (file == 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())) == 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_fsetmod if (b->flags&BIO_FLAGS_UPLINK) UP_fsetmod(b->ptr,(char)((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) || defined(OPENSSL_SYS_WIN32_CYGWIN) 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]='\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 */