1 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
4 * This package is an SSL implementation written
5 * by Eric Young (eay@cryptsoft.com).
6 * The implementation was written so as to conform with Netscapes SSL.
8 * This library is free for commercial and non-commercial use as long as
9 * the following conditions are aheared to. The following conditions
10 * apply to all code found in this distribution, be it the RC4, RSA,
11 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
12 * included with this distribution is covered by the same copyright terms
13 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 * Copyright remains Eric Young's, and as such any Copyright notices in
16 * the code are not to be removed.
17 * If this package is used in a product, Eric Young should be given attribution
18 * as the author of the parts of the library used.
19 * This can be in the form of a textual message at program startup or
20 * in documentation (online or textual) provided with the package.
22 * Redistribution and use in source and binary forms, with or without
23 * modification, are permitted provided that the following conditions
25 * 1. Redistributions of source code must retain the copyright
26 * notice, this list of conditions and the following disclaimer.
27 * 2. Redistributions in binary form must reproduce the above copyright
28 * notice, this list of conditions and the following disclaimer in the
29 * documentation and/or other materials provided with the distribution.
30 * 3. All advertising materials mentioning features or use of this software
31 * must display the following acknowledgement:
32 * "This product includes cryptographic software written by
33 * Eric Young (eay@cryptsoft.com)"
34 * The word 'cryptographic' can be left out if the rouines from the library
35 * being used are not cryptographic related :-).
36 * 4. If you include any Windows specific code (or a derivative thereof) from
37 * the apps directory (application code) you must include an acknowledgement:
38 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
43 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
44 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
45 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
46 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
48 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
49 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
52 * The licence and distribution terms for any publically available version or
53 * derivative of this code cannot be changed. i.e. this code cannot simply be
54 * copied and put under another distribution licence
55 * [including the GNU Public Licence.]
59 * 03-Dec-1997 rdenny@dc3.com Fix bug preventing use of stdin/stdout
60 * with binary data (e.g. asn1parse -inform DER < xxx) under
64 #ifndef HEADER_BSS_FILE_C
65 # define HEADER_BSS_FILE_C
67 # 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 files
71 * larger than 2GB from 32-bit application. It does not allow to traverse
72 * them beyond 2GB with fseek/ftell, but on the other hand *no* 32-bit
73 * platform permits that, not with fseek/ftell. Not to mention that breaking
74 * 2GB limit for seeking would require surgery to *our* API. But sequential
75 * access suffices for practical cases when you can run into large files,
76 * such as fingerprinting, so we can let API alone. For reference, the list
77 * of 32-bit platforms which allow for sequential access of large files
78 * without extra "magic" comprise *BSD, Darwin, IRIX...
80 # ifndef _FILE_OFFSET_BITS
81 # define _FILE_OFFSET_BITS 64
87 # include "internal/cryptlib.h"
89 # include <openssl/err.h>
91 # if defined(OPENSSL_SYS_NETWARE) && defined(NETWARE_CLIB)
92 # include <nwfileio.h>
95 # if !defined(OPENSSL_NO_STDIO)
97 static int file_write(BIO *h, const char *buf, int num);
98 static int file_read(BIO *h, char *buf, int size);
99 static int file_puts(BIO *h, const char *str);
100 static int file_gets(BIO *h, char *str, int size);
101 static long file_ctrl(BIO *h, int cmd, long arg1, void *arg2);
102 static int file_new(BIO *h);
103 static int file_free(BIO *data);
104 static BIO_METHOD methods_filep = {
117 static FILE *file_fopen(const char *filename, const char *mode)
121 # if defined(_WIN32) && defined(CP_UTF8)
122 int sz, len_0 = (int)strlen(filename) + 1;
126 * Basically there are three cases to cover: a) filename is
127 * pure ASCII string; b) actual UTF-8 encoded string and
128 * c) locale-ized string, i.e. one containing 8-bit
129 * characters that are meaningful in current system locale.
130 * If filename is pure ASCII or real UTF-8 encoded string,
131 * MultiByteToWideChar succeeds and _wfopen works. If
132 * filename is locale-ized string, chances are that
133 * MultiByteToWideChar fails reporting
134 * ERROR_NO_UNICODE_TRANSLATION, in which case we fall
137 if ((sz = MultiByteToWideChar(CP_UTF8, (flags = MB_ERR_INVALID_CHARS),
138 filename, len_0, NULL, 0)) > 0 ||
139 (GetLastError() == ERROR_INVALID_FLAGS &&
140 (sz = MultiByteToWideChar(CP_UTF8, (flags = 0),
141 filename, len_0, NULL, 0)) > 0)
144 WCHAR *wfilename = _alloca(sz * sizeof(WCHAR));
146 if (MultiByteToWideChar(CP_UTF8, flags,
147 filename, len_0, wfilename, sz) &&
148 MultiByteToWideChar(CP_UTF8, 0, mode, strlen(mode) + 1,
149 wmode, OSSL_NELEM(wmode)) &&
150 (file = _wfopen(wfilename, wmode)) == NULL &&
151 (errno == ENOENT || errno == EBADF)
154 * UTF-8 decode succeeded, but no file, filename
155 * could still have been locale-ized...
157 file = fopen(filename, mode);
159 } else if (GetLastError() == ERROR_NO_UNICODE_TRANSLATION) {
160 file = fopen(filename, mode);
163 file = fopen(filename, mode);
168 BIO *BIO_new_file(const char *filename, const char *mode)
171 FILE *file = file_fopen(filename, mode);
174 SYSerr(SYS_F_FOPEN, get_last_sys_error());
175 ERR_add_error_data(5, "fopen('", filename, "','", mode, "')");
177 BIOerr(BIO_F_BIO_NEW_FILE, BIO_R_NO_SUCH_FILE);
179 BIOerr(BIO_F_BIO_NEW_FILE, ERR_R_SYS_LIB);
182 if ((ret = BIO_new(BIO_s_file())) == NULL) {
187 BIO_clear_flags(ret, BIO_FLAGS_UPLINK); /* we did fopen -> we disengage
189 BIO_set_fp(ret, file, BIO_CLOSE);
193 BIO *BIO_new_fp(FILE *stream, int close_flag)
197 if ((ret = BIO_new(BIO_s_file())) == NULL)
200 BIO_set_flags(ret, BIO_FLAGS_UPLINK); /* redundant, left for
201 * documentation puposes */
202 BIO_set_fp(ret, stream, close_flag);
206 BIO_METHOD *BIO_s_file(void)
208 return (&methods_filep);
211 static int file_new(BIO *bi)
216 bi->flags = BIO_FLAGS_UPLINK; /* default to UPLINK */
220 static int file_free(BIO *a)
225 if ((a->init) && (a->ptr != NULL)) {
226 if (a->flags & BIO_FLAGS_UPLINK)
231 a->flags = BIO_FLAGS_UPLINK;
238 static int file_read(BIO *b, char *out, int outl)
242 if (b->init && (out != NULL)) {
243 if (b->flags & BIO_FLAGS_UPLINK)
244 ret = UP_fread(out, 1, (int)outl, b->ptr);
246 ret = fread(out, 1, (int)outl, (FILE *)b->ptr);
248 && (b->flags & BIO_FLAGS_UPLINK) ? UP_ferror((FILE *)b->ptr) :
249 ferror((FILE *)b->ptr)) {
250 SYSerr(SYS_F_FREAD, get_last_sys_error());
251 BIOerr(BIO_F_FILE_READ, ERR_R_SYS_LIB);
258 static int file_write(BIO *b, const char *in, int inl)
262 if (b->init && (in != NULL)) {
263 if (b->flags & BIO_FLAGS_UPLINK)
264 ret = UP_fwrite(in, (int)inl, 1, b->ptr);
266 ret = fwrite(in, (int)inl, 1, (FILE *)b->ptr);
269 /* ret=fwrite(in,1,(int)inl,(FILE *)b->ptr); */
271 * according to Tim Hudson <tjh@cryptsoft.com>, the commented out
272 * version above can cause 'inl' write calls under some stupid stdio
273 * implementations (VMS)
279 static long file_ctrl(BIO *b, int cmd, long num, void *ptr)
282 FILE *fp = (FILE *)b->ptr;
287 case BIO_C_FILE_SEEK:
289 if (b->flags & BIO_FLAGS_UPLINK)
290 ret = (long)UP_fseek(b->ptr, num, 0);
292 ret = (long)fseek(fp, num, 0);
295 if (b->flags & BIO_FLAGS_UPLINK)
296 ret = (long)UP_feof(fp);
298 ret = (long)feof(fp);
300 case BIO_C_FILE_TELL:
302 if (b->flags & BIO_FLAGS_UPLINK)
303 ret = UP_ftell(b->ptr);
307 case BIO_C_SET_FILE_PTR:
309 b->shutdown = (int)num & BIO_CLOSE;
312 # if BIO_FLAGS_UPLINK!=0
313 # if defined(__MINGW32__) && defined(__MSVCRT__) && !defined(_IOB_ENTRIES)
314 # define _IOB_ENTRIES 20
316 # if defined(_IOB_ENTRIES)
317 /* Safety net to catch purely internal BIO_set_fp calls */
318 if ((size_t)ptr >= (size_t)stdin &&
319 (size_t)ptr < (size_t)(stdin + _IOB_ENTRIES))
320 BIO_clear_flags(b, BIO_FLAGS_UPLINK);
324 if (b->flags & BIO_FLAGS_UPLINK)
325 UP_fsetmod(b->ptr, (char)((num & BIO_FP_TEXT) ? 't' : 'b'));
329 # if defined(OPENSSL_SYS_WINDOWS)
330 int fd = _fileno((FILE *)ptr);
331 if (num & BIO_FP_TEXT)
332 _setmode(fd, _O_TEXT);
334 _setmode(fd, _O_BINARY);
335 # elif defined(OPENSSL_SYS_NETWARE) && defined(NETWARE_CLIB)
336 int fd = fileno((FILE *)ptr);
337 /* Under CLib there are differences in file modes */
338 if (num & BIO_FP_TEXT)
341 setmode(fd, O_BINARY);
342 # elif defined(OPENSSL_SYS_MSDOS)
343 int fd = fileno((FILE *)ptr);
344 /* Set correct text/binary mode */
345 if (num & BIO_FP_TEXT)
346 _setmode(fd, _O_TEXT);
347 /* Dangerous to set stdin/stdout to raw (unless redirected) */
349 if (fd == STDIN_FILENO || fd == STDOUT_FILENO) {
351 _setmode(fd, _O_BINARY);
353 _setmode(fd, _O_BINARY);
355 # elif defined(OPENSSL_SYS_OS2) || defined(OPENSSL_SYS_WIN32_CYGWIN)
356 int fd = fileno((FILE *)ptr);
357 if (num & BIO_FP_TEXT)
360 setmode(fd, O_BINARY);
364 case BIO_C_SET_FILENAME:
366 b->shutdown = (int)num & BIO_CLOSE;
367 if (num & BIO_FP_APPEND) {
368 if (num & BIO_FP_READ)
369 OPENSSL_strlcpy(p, "a+", sizeof p);
371 OPENSSL_strlcpy(p, "a", sizeof p);
372 } else if ((num & BIO_FP_READ) && (num & BIO_FP_WRITE))
373 OPENSSL_strlcpy(p, "r+", sizeof p);
374 else if (num & BIO_FP_WRITE)
375 OPENSSL_strlcpy(p, "w", sizeof p);
376 else if (num & BIO_FP_READ)
377 OPENSSL_strlcpy(p, "r", sizeof p);
379 BIOerr(BIO_F_FILE_CTRL, BIO_R_BAD_FOPEN_MODE);
383 # if defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_OS2) || defined(OPENSSL_SYS_WIN32_CYGWIN)
384 if (!(num & BIO_FP_TEXT))
389 # if defined(OPENSSL_SYS_NETWARE)
390 if (!(num & BIO_FP_TEXT))
395 fp = file_fopen(ptr, p);
397 SYSerr(SYS_F_FOPEN, get_last_sys_error());
398 ERR_add_error_data(5, "fopen('", ptr, "','", p, "')");
399 BIOerr(BIO_F_FILE_CTRL, ERR_R_SYS_LIB);
405 BIO_clear_flags(b, BIO_FLAGS_UPLINK); /* we did fopen -> we disengage
408 case BIO_C_GET_FILE_PTR:
409 /* the ptr parameter is actually a FILE ** in this case. */
412 *fpp = (FILE *)b->ptr;
415 case BIO_CTRL_GET_CLOSE:
416 ret = (long)b->shutdown;
418 case BIO_CTRL_SET_CLOSE:
419 b->shutdown = (int)num;
422 if (b->flags & BIO_FLAGS_UPLINK)
425 fflush((FILE *)b->ptr);
431 case BIO_CTRL_WPENDING:
432 case BIO_CTRL_PENDING:
442 static int file_gets(BIO *bp, char *buf, int size)
447 if (bp->flags & BIO_FLAGS_UPLINK) {
448 if (!UP_fgets(buf, size, bp->ptr))
451 if (!fgets(buf, size, (FILE *)bp->ptr))
460 static int file_puts(BIO *bp, const char *str)
465 ret = file_write(bp, str, n);
471 static int file_write(BIO *b, const char *in, int inl)
475 static int file_read(BIO *b, char *out, int outl)
479 static int file_puts(BIO *bp, const char *str)
483 static int file_gets(BIO *bp, char *buf, int size)
487 static long file_ctrl(BIO *b, int cmd, long num, void *ptr)
491 static int file_new(BIO *bi)
495 static int file_free(BIO *a)
500 static BIO_METHOD methods_filep = {
513 BIO_METHOD *BIO_s_file(void)
515 return (&methods_filep);
518 BIO *BIO_new_file(const char *filename, const char *mode)
523 # endif /* OPENSSL_NO_STDIO */
525 #endif /* HEADER_BSS_FILE_C */