1 /* crypto/bio/bss_file.c */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
60 * 03-Dec-1997 rdenny@dc3.com Fix bug preventing use of stdin/stdout
61 * with binary data (e.g. asn1parse -inform DER < xxx) under
65 #ifndef HEADER_BSS_FILE_C
66 #define HEADER_BSS_FILE_C
68 #if defined(__linux) || defined(__sun) || defined(__hpux)
69 /* Following definition aliases fopen to fopen64 on above mentioned
70 * platforms. This makes it possible to open and sequentially access
71 * files larger than 2GB from 32-bit application. It does not allow to
72 * traverse them beyond 2GB with fseek/ftell, but on the other hand *no*
73 * 32-bit platform permits that, not with fseek/ftell. Not to mention
74 * that breaking 2GB limit for seeking would require surgery to *our*
75 * API. But sequential access suffices for practical cases when you
76 * can run into large files, such as fingerprinting, so we can let API
77 * alone. For reference, the list of 32-bit platforms which allow for
78 * sequential access of large files without extra "magic" comprise *BSD,
81 #ifndef _FILE_OFFSET_BITS
82 #define _FILE_OFFSET_BITS 64
90 #include <openssl/err.h>
92 #if !defined(OPENSSL_NO_STDIO)
94 static int MS_CALLBACK file_write(BIO *h, const char *buf, int num);
95 static int MS_CALLBACK file_read(BIO *h, char *buf, int size);
96 static int MS_CALLBACK file_puts(BIO *h, const char *str);
97 static int MS_CALLBACK file_gets(BIO *h, char *str, int size);
98 static long MS_CALLBACK file_ctrl(BIO *h, int cmd, long arg1, void *arg2);
99 static int MS_CALLBACK file_new(BIO *h);
100 static int MS_CALLBACK file_free(BIO *data);
101 static BIO_METHOD methods_filep=
115 BIO *BIO_new_file(const char *filename, const char *mode)
120 if ((file=fopen(filename,mode)) == NULL)
122 SYSerr(SYS_F_FOPEN,get_last_sys_error());
123 ERR_add_error_data(5,"fopen('",filename,"','",mode,"')");
125 BIOerr(BIO_F_BIO_NEW_FILE,BIO_R_NO_SUCH_FILE);
127 BIOerr(BIO_F_BIO_NEW_FILE,ERR_R_SYS_LIB);
130 if ((ret=BIO_new(BIO_s_file())) == NULL)
136 BIO_clear_flags(ret,BIO_FLAGS_UPLINK); /* we did fopen -> we disengage UPLINK */
137 BIO_set_fp(ret,file,BIO_CLOSE);
141 BIO *BIO_new_fp(FILE *stream, int close_flag)
145 if ((ret=BIO_new(BIO_s_file())) == NULL)
148 BIO_set_flags(ret,BIO_FLAGS_UPLINK); /* redundant, left for documentation puposes */
149 BIO_set_fp(ret,stream,close_flag);
153 BIO_METHOD *BIO_s_file(void)
155 return(&methods_filep);
158 static int MS_CALLBACK file_new(BIO *bi)
163 bi->flags=BIO_FLAGS_UPLINK; /* default to UPLINK */
167 static int MS_CALLBACK file_free(BIO *a)
169 if (a == NULL) return(0);
172 if ((a->init) && (a->ptr != NULL))
174 if (a->flags&BIO_FLAGS_UPLINK)
179 a->flags=BIO_FLAGS_UPLINK;
186 static int MS_CALLBACK file_read(BIO *b, char *out, int outl)
190 if (b->init && (out != NULL))
192 if (b->flags&BIO_FLAGS_UPLINK)
193 ret=UP_fread(out,1,(int)outl,b->ptr);
195 ret=fread(out,1,(int)outl,(FILE *)b->ptr);
196 if(ret == 0 && (b->flags&BIO_FLAGS_UPLINK)?UP_ferror((FILE *)b->ptr):ferror((FILE *)b->ptr))
198 SYSerr(SYS_F_FREAD,get_last_sys_error());
199 BIOerr(BIO_F_FILE_READ,ERR_R_SYS_LIB);
206 static int MS_CALLBACK file_write(BIO *b, const char *in, int inl)
210 if (b->init && (in != NULL))
212 if (b->flags&BIO_FLAGS_UPLINK)
213 ret=UP_fwrite(in,(int)inl,1,b->ptr);
215 ret=fwrite(in,(int)inl,1,(FILE *)b->ptr);
218 /* ret=fwrite(in,1,(int)inl,(FILE *)b->ptr); */
219 /* according to Tim Hudson <tjh@cryptsoft.com>, the commented
220 * out version above can cause 'inl' write calls under
221 * some stupid stdio implementations (VMS) */
226 static long MS_CALLBACK file_ctrl(BIO *b, int cmd, long num, void *ptr)
229 FILE *fp=(FILE *)b->ptr;
235 case BIO_C_FILE_SEEK:
237 if (b->flags&BIO_FLAGS_UPLINK)
238 ret=(long)UP_fseek(b->ptr,num,0);
240 ret=(long)fseek(fp,num,0);
243 if (b->flags&BIO_FLAGS_UPLINK)
244 ret=(long)UP_feof(fp);
248 case BIO_C_FILE_TELL:
250 if (b->flags&BIO_FLAGS_UPLINK)
251 ret=UP_ftell(b->ptr);
255 case BIO_C_SET_FILE_PTR:
257 b->shutdown=(int)num&BIO_CLOSE;
260 #if BIO_FLAGS_UPLINK!=0
261 #if defined(__MINGW32__) && defined(__MSVCRT__) && !defined(_IOB_ENTRIES)
262 #define _IOB_ENTRIES 20
264 #if defined(_IOB_ENTRIES)
265 /* Safety net to catch purely internal BIO_set_fp calls */
266 if ((size_t)ptr >= (size_t)stdin &&
267 (size_t)ptr < (size_t)(stdin+_IOB_ENTRIES))
268 BIO_clear_flags(b,BIO_FLAGS_UPLINK);
272 if (b->flags&BIO_FLAGS_UPLINK)
273 UP_fsetmode(b->ptr,num&BIO_FP_TEXT?'t':'b');
277 #if defined(OPENSSL_SYS_WINDOWS)
278 int fd = fileno((FILE*)ptr);
279 if (num & BIO_FP_TEXT)
280 _setmode(fd,_O_TEXT);
282 _setmode(fd,_O_BINARY);
283 #elif defined(OPENSSL_SYS_NETWARE) && defined(NETWARE_CLIB)
284 int fd = fileno((FILE*)ptr);
285 /* Under CLib there are differences in file modes */
286 if (num & BIO_FP_TEXT)
289 _setmode(fd,O_BINARY);
290 #elif defined(OPENSSL_SYS_MSDOS)
291 int fd = fileno((FILE*)ptr);
292 /* Set correct text/binary mode */
293 if (num & BIO_FP_TEXT)
294 _setmode(fd,_O_TEXT);
295 /* Dangerous to set stdin/stdout to raw (unless redirected) */
298 if (fd == STDIN_FILENO || fd == STDOUT_FILENO)
301 _setmode(fd,_O_BINARY);
304 _setmode(fd,_O_BINARY);
306 #elif defined(OPENSSL_SYS_OS2) || defined(OPENSSL_SYS_WIN32_CYGWIN)
307 int fd = fileno((FILE*)ptr);
308 if (num & BIO_FP_TEXT)
311 setmode(fd, O_BINARY);
315 case BIO_C_SET_FILENAME:
317 b->shutdown=(int)num&BIO_CLOSE;
318 if (num & BIO_FP_APPEND)
320 if (num & BIO_FP_READ)
321 BUF_strlcpy(p,"a+",sizeof p);
322 else BUF_strlcpy(p,"a",sizeof p);
324 else if ((num & BIO_FP_READ) && (num & BIO_FP_WRITE))
325 BUF_strlcpy(p,"r+",sizeof p);
326 else if (num & BIO_FP_WRITE)
327 BUF_strlcpy(p,"w",sizeof p);
328 else if (num & BIO_FP_READ)
329 BUF_strlcpy(p,"r",sizeof p);
332 BIOerr(BIO_F_FILE_CTRL,BIO_R_BAD_FOPEN_MODE);
336 #if defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_OS2) || defined(OPENSSL_SYS_WIN32_CYGWIN)
337 if (!(num & BIO_FP_TEXT))
342 #if defined(OPENSSL_SYS_NETWARE)
343 if (!(num & BIO_FP_TEXT))
351 SYSerr(SYS_F_FOPEN,get_last_sys_error());
352 ERR_add_error_data(5,"fopen('",ptr,"','",p,"')");
353 BIOerr(BIO_F_FILE_CTRL,ERR_R_SYS_LIB);
359 BIO_clear_flags(b,BIO_FLAGS_UPLINK); /* we did fopen -> we disengage UPLINK */
361 case BIO_C_GET_FILE_PTR:
362 /* the ptr parameter is actually a FILE ** in this case. */
369 case BIO_CTRL_GET_CLOSE:
370 ret=(long)b->shutdown;
372 case BIO_CTRL_SET_CLOSE:
373 b->shutdown=(int)num;
376 if (b->flags&BIO_FLAGS_UPLINK)
379 fflush((FILE *)b->ptr);
385 case BIO_CTRL_WPENDING:
386 case BIO_CTRL_PENDING:
396 static int MS_CALLBACK file_gets(BIO *bp, char *buf, int size)
401 if (bp->flags&BIO_FLAGS_UPLINK)
402 UP_fgets(buf,size,bp->ptr);
404 fgets(buf,size,(FILE *)bp->ptr);
410 static int MS_CALLBACK file_puts(BIO *bp, const char *str)
415 ret=file_write(bp,str,n);
419 #endif /* OPENSSL_NO_STDIO */
421 #endif /* HEADER_BSS_FILE_C */