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)
70 * Following definition aliases fopen to fopen64 on above mentioned
71 * platforms. This makes it possible to open and sequentially access files
72 * larger than 2GB from 32-bit application. It does not allow to traverse
73 * them beyond 2GB with fseek/ftell, but on the other hand *no* 32-bit
74 * platform permits that, not with fseek/ftell. Not to mention that breaking
75 * 2GB limit for seeking would require surgery to *our* API. But sequential
76 * access suffices for practical cases when you can run into large files,
77 * such as fingerprinting, so we can let API alone. For reference, the list
78 * of 32-bit platforms which allow for sequential access of large files
79 * without extra "magic" comprise *BSD, Darwin, IRIX...
81 # ifndef _FILE_OFFSET_BITS
82 # define _FILE_OFFSET_BITS 64
88 # include "cryptlib.h"
90 # include <openssl/err.h>
92 # if defined(OPENSSL_SYS_NETWARE) && defined(NETWARE_CLIB)
93 # include <nwfileio.h>
96 # if !defined(OPENSSL_NO_STDIO)
98 static int MS_CALLBACK file_write(BIO *h, const char *buf, int num);
99 static int MS_CALLBACK file_read(BIO *h, char *buf, int size);
100 static int MS_CALLBACK file_puts(BIO *h, const char *str);
101 static int MS_CALLBACK file_gets(BIO *h, char *str, int size);
102 static long MS_CALLBACK file_ctrl(BIO *h, int cmd, long arg1, void *arg2);
103 static int MS_CALLBACK file_new(BIO *h);
104 static int MS_CALLBACK file_free(BIO *data);
105 static BIO_METHOD methods_filep = {
118 BIO *BIO_new_file(const char *filename, const char *mode)
123 if ((file = fopen(filename, mode)) == NULL) {
124 SYSerr(SYS_F_FOPEN, get_last_sys_error());
125 ERR_add_error_data(5, "fopen('", filename, "','", mode, "')");
127 BIOerr(BIO_F_BIO_NEW_FILE, BIO_R_NO_SUCH_FILE);
129 BIOerr(BIO_F_BIO_NEW_FILE, ERR_R_SYS_LIB);
132 if ((ret = BIO_new(BIO_s_file_internal())) == NULL) {
137 BIO_clear_flags(ret, BIO_FLAGS_UPLINK); /* we did fopen -> we disengage
139 BIO_set_fp(ret, file, BIO_CLOSE);
143 BIO *BIO_new_fp(FILE *stream, int close_flag)
147 if ((ret = BIO_new(BIO_s_file())) == NULL)
150 BIO_set_flags(ret, BIO_FLAGS_UPLINK); /* redundant, left for
151 * documentation puposes */
152 BIO_set_fp(ret, stream, close_flag);
156 BIO_METHOD *BIO_s_file(void)
158 return (&methods_filep);
161 static int MS_CALLBACK file_new(BIO *bi)
166 bi->flags = BIO_FLAGS_UPLINK; /* default to UPLINK */
170 static int MS_CALLBACK file_free(BIO *a)
175 if ((a->init) && (a->ptr != NULL)) {
176 if (a->flags & BIO_FLAGS_UPLINK)
181 a->flags = BIO_FLAGS_UPLINK;
188 static int MS_CALLBACK file_read(BIO *b, char *out, int outl)
192 if (b->init && (out != NULL)) {
193 if (b->flags & BIO_FLAGS_UPLINK)
194 ret = UP_fread(out, 1, (int)outl, b->ptr);
196 ret = fread(out, 1, (int)outl, (FILE *)b->ptr);
198 && (b->flags & BIO_FLAGS_UPLINK) ? UP_ferror((FILE *)b->ptr) :
199 ferror((FILE *)b->ptr)) {
200 SYSerr(SYS_F_FREAD, get_last_sys_error());
201 BIOerr(BIO_F_FILE_READ, ERR_R_SYS_LIB);
208 static int MS_CALLBACK file_write(BIO *b, const char *in, int inl)
212 if (b->init && (in != NULL)) {
213 if (b->flags & BIO_FLAGS_UPLINK)
214 ret = UP_fwrite(in, (int)inl, 1, b->ptr);
216 ret = fwrite(in, (int)inl, 1, (FILE *)b->ptr);
219 /* ret=fwrite(in,1,(int)inl,(FILE *)b->ptr); */
221 * according to Tim Hudson <tjh@cryptsoft.com>, the commented out
222 * version above can cause 'inl' write calls under some stupid stdio
223 * implementations (VMS)
229 static long MS_CALLBACK file_ctrl(BIO *b, int cmd, long num, void *ptr)
232 FILE *fp = (FILE *)b->ptr;
237 case BIO_C_FILE_SEEK:
239 if (b->flags & BIO_FLAGS_UPLINK)
240 ret = (long)UP_fseek(b->ptr, num, 0);
242 ret = (long)fseek(fp, num, 0);
245 if (b->flags & BIO_FLAGS_UPLINK)
246 ret = (long)UP_feof(fp);
248 ret = (long)feof(fp);
250 case BIO_C_FILE_TELL:
252 if (b->flags & BIO_FLAGS_UPLINK)
253 ret = UP_ftell(b->ptr);
257 case BIO_C_SET_FILE_PTR:
259 b->shutdown = (int)num & BIO_CLOSE;
262 # if BIO_FLAGS_UPLINK!=0
263 # if defined(__MINGW32__) && defined(__MSVCRT__) && !defined(_IOB_ENTRIES)
264 # define _IOB_ENTRIES 20
266 # if defined(_IOB_ENTRIES)
267 /* Safety net to catch purely internal BIO_set_fp calls */
268 if ((size_t)ptr >= (size_t)stdin &&
269 (size_t)ptr < (size_t)(stdin + _IOB_ENTRIES))
270 BIO_clear_flags(b, BIO_FLAGS_UPLINK);
274 if (b->flags & BIO_FLAGS_UPLINK)
275 UP_fsetmod(b->ptr, (char)((num & BIO_FP_TEXT) ? 't' : 'b'));
279 # if defined(OPENSSL_SYS_WINDOWS)
280 int fd = _fileno((FILE *)ptr);
281 if (num & BIO_FP_TEXT)
282 _setmode(fd, _O_TEXT);
284 _setmode(fd, _O_BINARY);
285 # elif defined(OPENSSL_SYS_NETWARE) && defined(NETWARE_CLIB)
286 int fd = fileno((FILE *)ptr);
288 * Under CLib there are differences in file modes
290 if (num & BIO_FP_TEXT)
293 setmode(fd, O_BINARY);
294 # elif defined(OPENSSL_SYS_MSDOS)
295 int fd = fileno((FILE *)ptr);
296 /* Set correct text/binary mode */
297 if (num & BIO_FP_TEXT)
298 _setmode(fd, _O_TEXT);
299 /* Dangerous to set stdin/stdout to raw (unless redirected) */
301 if (fd == STDIN_FILENO || fd == STDOUT_FILENO) {
303 _setmode(fd, _O_BINARY);
305 _setmode(fd, _O_BINARY);
307 # elif defined(OPENSSL_SYS_OS2)
308 int fd = fileno((FILE *)ptr);
309 if (num & BIO_FP_TEXT)
312 setmode(fd, O_BINARY);
316 case BIO_C_SET_FILENAME:
318 b->shutdown = (int)num & BIO_CLOSE;
319 if (num & BIO_FP_APPEND) {
320 if (num & BIO_FP_READ)
321 BUF_strlcpy(p, "a+", sizeof p);
323 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);
331 BIOerr(BIO_F_FILE_CTRL, BIO_R_BAD_FOPEN_MODE);
335 # if defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_OS2) || defined(OPENSSL_SYS_WIN32_CYGWIN)
336 if (!(num & BIO_FP_TEXT))
341 # if defined(OPENSSL_SYS_NETWARE)
342 if (!(num & BIO_FP_TEXT))
349 SYSerr(SYS_F_FOPEN, get_last_sys_error());
350 ERR_add_error_data(5, "fopen('", ptr, "','", p, "')");
351 BIOerr(BIO_F_FILE_CTRL, ERR_R_SYS_LIB);
357 BIO_clear_flags(b, BIO_FLAGS_UPLINK); /* we did fopen -> we disengage
360 case BIO_C_GET_FILE_PTR:
361 /* the ptr parameter is actually a FILE ** in this case. */
364 *fpp = (FILE *)b->ptr;
367 case BIO_CTRL_GET_CLOSE:
368 ret = (long)b->shutdown;
370 case BIO_CTRL_SET_CLOSE:
371 b->shutdown = (int)num;
374 if (b->flags & BIO_FLAGS_UPLINK)
377 fflush((FILE *)b->ptr);
383 case BIO_CTRL_WPENDING:
384 case BIO_CTRL_PENDING:
394 static int MS_CALLBACK file_gets(BIO *bp, char *buf, int size)
399 if (bp->flags & BIO_FLAGS_UPLINK) {
400 if (!UP_fgets(buf, size, bp->ptr))
403 if (!fgets(buf, size, (FILE *)bp->ptr))
412 static int MS_CALLBACK file_puts(BIO *bp, const char *str)
417 ret = file_write(bp, str, n);
421 # endif /* OPENSSL_NO_STDIO */
423 #endif /* HEADER_BSS_FILE_C */