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
88 # include <openssl/err.h>
90 # if !defined(OPENSSL_NO_STDIO)
92 static int file_write(BIO *h, const char *buf, int num);
93 static int file_read(BIO *h, char *buf, int size);
94 static int file_puts(BIO *h, const char *str);
95 static int file_gets(BIO *h, char *str, int size);
96 static long file_ctrl(BIO *h, int cmd, long arg1, void *arg2);
97 static int file_new(BIO *h);
98 static int file_free(BIO *data);
99 static const BIO_METHOD methods_filep = {
112 static FILE *file_fopen(const char *filename, const char *mode)
116 # if defined(_WIN32) && defined(CP_UTF8)
117 int sz, len_0 = (int)strlen(filename) + 1;
121 * Basically there are three cases to cover: a) filename is
122 * pure ASCII string; b) actual UTF-8 encoded string and
123 * c) locale-ized string, i.e. one containing 8-bit
124 * characters that are meaningful in current system locale.
125 * If filename is pure ASCII or real UTF-8 encoded string,
126 * MultiByteToWideChar succeeds and _wfopen works. If
127 * filename is locale-ized string, chances are that
128 * MultiByteToWideChar fails reporting
129 * ERROR_NO_UNICODE_TRANSLATION, in which case we fall
132 if ((sz = MultiByteToWideChar(CP_UTF8, (flags = MB_ERR_INVALID_CHARS),
133 filename, len_0, NULL, 0)) > 0 ||
134 (GetLastError() == ERROR_INVALID_FLAGS &&
135 (sz = MultiByteToWideChar(CP_UTF8, (flags = 0),
136 filename, len_0, NULL, 0)) > 0)
139 WCHAR *wfilename = _alloca(sz * sizeof(WCHAR));
141 if (MultiByteToWideChar(CP_UTF8, flags,
142 filename, len_0, wfilename, sz) &&
143 MultiByteToWideChar(CP_UTF8, 0, mode, strlen(mode) + 1,
144 wmode, OSSL_NELEM(wmode)) &&
145 (file = _wfopen(wfilename, wmode)) == NULL &&
146 (errno == ENOENT || errno == EBADF)
149 * UTF-8 decode succeeded, but no file, filename
150 * could still have been locale-ized...
152 file = fopen(filename, mode);
154 } else if (GetLastError() == ERROR_NO_UNICODE_TRANSLATION) {
155 file = fopen(filename, mode);
158 file = fopen(filename, mode);
163 BIO *BIO_new_file(const char *filename, const char *mode)
166 FILE *file = file_fopen(filename, mode);
167 int fp_flags = BIO_CLOSE;
169 if (strchr(mode, 'b') == NULL)
170 fp_flags |= BIO_FP_TEXT;
173 SYSerr(SYS_F_FOPEN, get_last_sys_error());
174 ERR_add_error_data(5, "fopen('", filename, "','", mode, "')");
176 BIOerr(BIO_F_BIO_NEW_FILE, BIO_R_NO_SUCH_FILE);
178 BIOerr(BIO_F_BIO_NEW_FILE, ERR_R_SYS_LIB);
181 if ((ret = BIO_new(BIO_s_file())) == NULL) {
186 BIO_clear_flags(ret, BIO_FLAGS_UPLINK); /* we did fopen -> we disengage
188 BIO_set_fp(ret, file, fp_flags);
192 BIO *BIO_new_fp(FILE *stream, int close_flag)
196 if ((ret = BIO_new(BIO_s_file())) == NULL)
199 /* redundant flag, left for documentation purposes */
200 BIO_set_flags(ret, BIO_FLAGS_UPLINK);
201 BIO_set_fp(ret, stream, close_flag);
205 const BIO_METHOD *BIO_s_file(void)
207 return (&methods_filep);
210 static int file_new(BIO *bi)
215 bi->flags = BIO_FLAGS_UPLINK; /* default to UPLINK */
219 static int file_free(BIO *a)
224 if ((a->init) && (a->ptr != NULL)) {
225 if (a->flags & BIO_FLAGS_UPLINK)
230 a->flags = BIO_FLAGS_UPLINK;
237 static int file_read(BIO *b, char *out, int outl)
241 if (b->init && (out != NULL)) {
242 if (b->flags & BIO_FLAGS_UPLINK)
243 ret = UP_fread(out, 1, (int)outl, b->ptr);
245 ret = fread(out, 1, (int)outl, (FILE *)b->ptr);
247 && (b->flags & BIO_FLAGS_UPLINK) ? UP_ferror((FILE *)b->ptr) :
248 ferror((FILE *)b->ptr)) {
249 SYSerr(SYS_F_FREAD, get_last_sys_error());
250 BIOerr(BIO_F_FILE_READ, ERR_R_SYS_LIB);
257 static int file_write(BIO *b, const char *in, int inl)
261 if (b->init && (in != NULL)) {
262 if (b->flags & BIO_FLAGS_UPLINK)
263 ret = UP_fwrite(in, (int)inl, 1, b->ptr);
265 ret = fwrite(in, (int)inl, 1, (FILE *)b->ptr);
268 /* ret=fwrite(in,1,(int)inl,(FILE *)b->ptr); */
270 * according to Tim Hudson <tjh@cryptsoft.com>, the commented out
271 * version above can cause 'inl' write calls under some stupid stdio
272 * implementations (VMS)
278 static long file_ctrl(BIO *b, int cmd, long num, void *ptr)
281 FILE *fp = (FILE *)b->ptr;
286 case BIO_C_FILE_SEEK:
288 if (b->flags & BIO_FLAGS_UPLINK)
289 ret = (long)UP_fseek(b->ptr, num, 0);
291 ret = (long)fseek(fp, num, 0);
294 if (b->flags & BIO_FLAGS_UPLINK)
295 ret = (long)UP_feof(fp);
297 ret = (long)feof(fp);
299 case BIO_C_FILE_TELL:
301 if (b->flags & BIO_FLAGS_UPLINK)
302 ret = UP_ftell(b->ptr);
306 case BIO_C_SET_FILE_PTR:
308 b->shutdown = (int)num & BIO_CLOSE;
311 # if BIO_FLAGS_UPLINK!=0
312 # if defined(__MINGW32__) && defined(__MSVCRT__) && !defined(_IOB_ENTRIES)
313 # define _IOB_ENTRIES 20
315 /* Safety net to catch purely internal BIO_set_fp calls */
316 # if defined(_MSC_VER) && _MSC_VER>=1900
317 if (ptr == stdin || ptr == stdout || ptr == stderr)
318 BIO_clear_flags(b, BIO_FLAGS_UPLINK);
319 # elif defined(_IOB_ENTRIES)
320 if ((size_t)ptr >= (size_t)stdin &&
321 (size_t)ptr < (size_t)(stdin + _IOB_ENTRIES))
322 BIO_clear_flags(b, BIO_FLAGS_UPLINK);
326 if (b->flags & BIO_FLAGS_UPLINK)
327 UP_fsetmod(b->ptr, (char)((num & BIO_FP_TEXT) ? 't' : 'b'));
331 # if defined(OPENSSL_SYS_WINDOWS)
332 int fd = _fileno((FILE *)ptr);
333 if (num & BIO_FP_TEXT)
334 _setmode(fd, _O_TEXT);
336 _setmode(fd, _O_BINARY);
337 # elif defined(OPENSSL_SYS_MSDOS)
338 int fd = fileno((FILE *)ptr);
339 /* Set correct text/binary mode */
340 if (num & BIO_FP_TEXT)
341 _setmode(fd, _O_TEXT);
342 /* Dangerous to set stdin/stdout to raw (unless redirected) */
344 if (fd == STDIN_FILENO || fd == STDOUT_FILENO) {
346 _setmode(fd, _O_BINARY);
348 _setmode(fd, _O_BINARY);
350 # elif defined(OPENSSL_SYS_WIN32_CYGWIN)
351 int fd = fileno((FILE *)ptr);
352 if (num & BIO_FP_TEXT)
355 setmode(fd, O_BINARY);
359 case BIO_C_SET_FILENAME:
361 b->shutdown = (int)num & BIO_CLOSE;
362 if (num & BIO_FP_APPEND) {
363 if (num & BIO_FP_READ)
364 OPENSSL_strlcpy(p, "a+", sizeof p);
366 OPENSSL_strlcpy(p, "a", sizeof p);
367 } else if ((num & BIO_FP_READ) && (num & BIO_FP_WRITE))
368 OPENSSL_strlcpy(p, "r+", sizeof p);
369 else if (num & BIO_FP_WRITE)
370 OPENSSL_strlcpy(p, "w", sizeof p);
371 else if (num & BIO_FP_READ)
372 OPENSSL_strlcpy(p, "r", sizeof p);
374 BIOerr(BIO_F_FILE_CTRL, BIO_R_BAD_FOPEN_MODE);
378 # if defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_WIN32_CYGWIN)
379 if (!(num & BIO_FP_TEXT))
384 fp = file_fopen(ptr, p);
386 SYSerr(SYS_F_FOPEN, get_last_sys_error());
387 ERR_add_error_data(5, "fopen('", ptr, "','", p, "')");
388 BIOerr(BIO_F_FILE_CTRL, ERR_R_SYS_LIB);
394 BIO_clear_flags(b, BIO_FLAGS_UPLINK); /* we did fopen -> we disengage
397 case BIO_C_GET_FILE_PTR:
398 /* the ptr parameter is actually a FILE ** in this case. */
401 *fpp = (FILE *)b->ptr;
404 case BIO_CTRL_GET_CLOSE:
405 ret = (long)b->shutdown;
407 case BIO_CTRL_SET_CLOSE:
408 b->shutdown = (int)num;
411 if (b->flags & BIO_FLAGS_UPLINK)
414 fflush((FILE *)b->ptr);
420 case BIO_CTRL_WPENDING:
421 case BIO_CTRL_PENDING:
431 static int file_gets(BIO *bp, char *buf, int size)
436 if (bp->flags & BIO_FLAGS_UPLINK) {
437 if (!UP_fgets(buf, size, bp->ptr))
440 if (!fgets(buf, size, (FILE *)bp->ptr))
449 static int file_puts(BIO *bp, const char *str)
454 ret = file_write(bp, str, n);
460 static int file_write(BIO *b, const char *in, int inl)
464 static int file_read(BIO *b, char *out, int outl)
468 static int file_puts(BIO *bp, const char *str)
472 static int file_gets(BIO *bp, char *buf, int size)
476 static long file_ctrl(BIO *b, int cmd, long num, void *ptr)
480 static int file_new(BIO *bi)
484 static int file_free(BIO *a)
489 static const BIO_METHOD methods_filep = {
502 const BIO_METHOD *BIO_s_file(void)
504 return (&methods_filep);
507 BIO *BIO_new_file(const char *filename, const char *mode)
512 # endif /* OPENSSL_NO_STDIO */
514 #endif /* HEADER_BSS_FILE_C */