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);
169 SYSerr(SYS_F_FOPEN, get_last_sys_error());
170 ERR_add_error_data(5, "fopen('", filename, "','", mode, "')");
172 BIOerr(BIO_F_BIO_NEW_FILE, BIO_R_NO_SUCH_FILE);
174 BIOerr(BIO_F_BIO_NEW_FILE, ERR_R_SYS_LIB);
177 if ((ret = BIO_new(BIO_s_file())) == NULL) {
182 BIO_clear_flags(ret, BIO_FLAGS_UPLINK); /* we did fopen -> we disengage
184 BIO_set_fp(ret, file, BIO_CLOSE);
188 BIO *BIO_new_fp(FILE *stream, int close_flag)
192 if ((ret = BIO_new(BIO_s_file())) == NULL)
195 /* redundant flag, left for documentation purposes */
196 BIO_set_flags(ret, BIO_FLAGS_UPLINK);
197 BIO_set_fp(ret, stream, close_flag);
201 const BIO_METHOD *BIO_s_file(void)
203 return (&methods_filep);
206 static int file_new(BIO *bi)
211 bi->flags = BIO_FLAGS_UPLINK; /* default to UPLINK */
215 static int file_free(BIO *a)
220 if ((a->init) && (a->ptr != NULL)) {
221 if (a->flags & BIO_FLAGS_UPLINK)
226 a->flags = BIO_FLAGS_UPLINK;
233 static int file_read(BIO *b, char *out, int outl)
237 if (b->init && (out != NULL)) {
238 if (b->flags & BIO_FLAGS_UPLINK)
239 ret = UP_fread(out, 1, (int)outl, b->ptr);
241 ret = fread(out, 1, (int)outl, (FILE *)b->ptr);
243 && (b->flags & BIO_FLAGS_UPLINK) ? UP_ferror((FILE *)b->ptr) :
244 ferror((FILE *)b->ptr)) {
245 SYSerr(SYS_F_FREAD, get_last_sys_error());
246 BIOerr(BIO_F_FILE_READ, ERR_R_SYS_LIB);
253 static int file_write(BIO *b, const char *in, int inl)
257 if (b->init && (in != NULL)) {
258 if (b->flags & BIO_FLAGS_UPLINK)
259 ret = UP_fwrite(in, (int)inl, 1, b->ptr);
261 ret = fwrite(in, (int)inl, 1, (FILE *)b->ptr);
264 /* ret=fwrite(in,1,(int)inl,(FILE *)b->ptr); */
266 * according to Tim Hudson <tjh@cryptsoft.com>, the commented out
267 * version above can cause 'inl' write calls under some stupid stdio
268 * implementations (VMS)
274 static long file_ctrl(BIO *b, int cmd, long num, void *ptr)
277 FILE *fp = (FILE *)b->ptr;
282 case BIO_C_FILE_SEEK:
284 if (b->flags & BIO_FLAGS_UPLINK)
285 ret = (long)UP_fseek(b->ptr, num, 0);
287 ret = (long)fseek(fp, num, 0);
290 if (b->flags & BIO_FLAGS_UPLINK)
291 ret = (long)UP_feof(fp);
293 ret = (long)feof(fp);
295 case BIO_C_FILE_TELL:
297 if (b->flags & BIO_FLAGS_UPLINK)
298 ret = UP_ftell(b->ptr);
302 case BIO_C_SET_FILE_PTR:
304 b->shutdown = (int)num & BIO_CLOSE;
307 # if BIO_FLAGS_UPLINK!=0
308 # if defined(__MINGW32__) && defined(__MSVCRT__) && !defined(_IOB_ENTRIES)
309 # define _IOB_ENTRIES 20
311 # if defined(_IOB_ENTRIES)
312 /* Safety net to catch purely internal BIO_set_fp calls */
313 if ((size_t)ptr >= (size_t)stdin &&
314 (size_t)ptr < (size_t)(stdin + _IOB_ENTRIES))
315 BIO_clear_flags(b, BIO_FLAGS_UPLINK);
319 if (b->flags & BIO_FLAGS_UPLINK)
320 UP_fsetmod(b->ptr, (char)((num & BIO_FP_TEXT) ? 't' : 'b'));
324 # if defined(OPENSSL_SYS_WINDOWS)
325 int fd = _fileno((FILE *)ptr);
326 if (num & BIO_FP_TEXT)
327 _setmode(fd, _O_TEXT);
329 _setmode(fd, _O_BINARY);
330 # elif defined(OPENSSL_SYS_MSDOS)
331 int fd = fileno((FILE *)ptr);
332 /* Set correct text/binary mode */
333 if (num & BIO_FP_TEXT)
334 _setmode(fd, _O_TEXT);
335 /* Dangerous to set stdin/stdout to raw (unless redirected) */
337 if (fd == STDIN_FILENO || fd == STDOUT_FILENO) {
339 _setmode(fd, _O_BINARY);
341 _setmode(fd, _O_BINARY);
343 # elif defined(OPENSSL_SYS_WIN32_CYGWIN)
344 int fd = fileno((FILE *)ptr);
345 if (num & BIO_FP_TEXT)
348 setmode(fd, O_BINARY);
352 case BIO_C_SET_FILENAME:
354 b->shutdown = (int)num & BIO_CLOSE;
355 if (num & BIO_FP_APPEND) {
356 if (num & BIO_FP_READ)
357 OPENSSL_strlcpy(p, "a+", sizeof p);
359 OPENSSL_strlcpy(p, "a", sizeof p);
360 } else if ((num & BIO_FP_READ) && (num & BIO_FP_WRITE))
361 OPENSSL_strlcpy(p, "r+", sizeof p);
362 else if (num & BIO_FP_WRITE)
363 OPENSSL_strlcpy(p, "w", sizeof p);
364 else if (num & BIO_FP_READ)
365 OPENSSL_strlcpy(p, "r", sizeof p);
367 BIOerr(BIO_F_FILE_CTRL, BIO_R_BAD_FOPEN_MODE);
371 # if defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_WIN32_CYGWIN)
372 if (!(num & BIO_FP_TEXT))
377 fp = file_fopen(ptr, p);
379 SYSerr(SYS_F_FOPEN, get_last_sys_error());
380 ERR_add_error_data(5, "fopen('", ptr, "','", p, "')");
381 BIOerr(BIO_F_FILE_CTRL, ERR_R_SYS_LIB);
387 BIO_clear_flags(b, BIO_FLAGS_UPLINK); /* we did fopen -> we disengage
390 case BIO_C_GET_FILE_PTR:
391 /* the ptr parameter is actually a FILE ** in this case. */
394 *fpp = (FILE *)b->ptr;
397 case BIO_CTRL_GET_CLOSE:
398 ret = (long)b->shutdown;
400 case BIO_CTRL_SET_CLOSE:
401 b->shutdown = (int)num;
404 if (b->flags & BIO_FLAGS_UPLINK)
407 fflush((FILE *)b->ptr);
413 case BIO_CTRL_WPENDING:
414 case BIO_CTRL_PENDING:
424 static int file_gets(BIO *bp, char *buf, int size)
429 if (bp->flags & BIO_FLAGS_UPLINK) {
430 if (!UP_fgets(buf, size, bp->ptr))
433 if (!fgets(buf, size, (FILE *)bp->ptr))
442 static int file_puts(BIO *bp, const char *str)
447 ret = file_write(bp, str, n);
453 static int file_write(BIO *b, const char *in, int inl)
457 static int file_read(BIO *b, char *out, int outl)
461 static int file_puts(BIO *bp, const char *str)
465 static int file_gets(BIO *bp, char *buf, int size)
469 static long file_ctrl(BIO *b, int cmd, long num, void *ptr)
473 static int file_new(BIO *bi)
477 static int file_free(BIO *a)
482 static const BIO_METHOD methods_filep = {
495 const BIO_METHOD *BIO_s_file(void)
497 return (&methods_filep);
500 BIO *BIO_new_file(const char *filename, const char *mode)
505 # endif /* OPENSSL_NO_STDIO */
507 #endif /* HEADER_BSS_FILE_C */