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d02b48c6 | 1 | /* crypto/bio/bss_file.c */ |
58964a49 | 2 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
d02b48c6 RE |
3 | * All rights reserved. |
4 | * | |
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. | |
40720ce3 | 8 | * |
d02b48c6 RE |
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). | |
40720ce3 | 15 | * |
d02b48c6 RE |
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. | |
40720ce3 | 22 | * |
d02b48c6 RE |
23 | * Redistribution and use in source and binary forms, with or without |
24 | * modification, are permitted provided that the following conditions | |
25 | * are met: | |
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 :-). | |
40720ce3 | 37 | * 4. If you include any Windows specific code (or a derivative thereof) from |
d02b48c6 RE |
38 | * the apps directory (application code) you must include an acknowledgement: |
39 | * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" | |
40720ce3 | 40 | * |
d02b48c6 RE |
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 | |
51 | * SUCH DAMAGE. | |
40720ce3 | 52 | * |
d02b48c6 RE |
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.] | |
57 | */ | |
58 | ||
3e8042c3 | 59 | /*- |
40720ce3 MC |
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 | |
62 | * Windows | |
58964a49 RE |
63 | */ |
64 | ||
65 | #ifndef HEADER_BSS_FILE_C | |
40720ce3 | 66 | # define HEADER_BSS_FILE_C |
58964a49 | 67 | |
40720ce3 MC |
68 | # if defined(__linux) || defined(__sun) || defined(__hpux) |
69 | /* | |
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... | |
727c9b80 | 80 | */ |
40720ce3 MC |
81 | # ifndef _FILE_OFFSET_BITS |
82 | # define _FILE_OFFSET_BITS 64 | |
83 | # endif | |
84 | # endif | |
727c9b80 | 85 | |
40720ce3 MC |
86 | # include <stdio.h> |
87 | # include <errno.h> | |
88 | # include "cryptlib.h" | |
89 | # include "bio_lcl.h" | |
90 | # include <openssl/err.h> | |
d02b48c6 | 91 | |
40720ce3 MC |
92 | # if defined(OPENSSL_SYS_NETWARE) && defined(NETWARE_CLIB) |
93 | # include <nwfileio.h> | |
94 | # endif | |
3b0e61a8 | 95 | |
40720ce3 | 96 | # if !defined(OPENSSL_NO_STDIO) |
58964a49 | 97 | |
0e1c0612 UM |
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); | |
d02b48c6 RE |
103 | static int MS_CALLBACK file_new(BIO *h); |
104 | static int MS_CALLBACK file_free(BIO *data); | |
40720ce3 MC |
105 | static BIO_METHOD methods_filep = { |
106 | BIO_TYPE_FILE, | |
107 | "FILE pointer", | |
108 | file_write, | |
109 | file_read, | |
110 | file_puts, | |
111 | file_gets, | |
112 | file_ctrl, | |
113 | file_new, | |
114 | file_free, | |
115 | NULL, | |
116 | }; | |
d02b48c6 | 117 | |
72fbe87d | 118 | BIO *BIO_new_file(const char *filename, const char *mode) |
40720ce3 MC |
119 | { |
120 | BIO *ret; | |
121 | FILE *file; | |
d02b48c6 | 122 | |
40720ce3 MC |
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, "')"); | |
126 | if (errno == ENOENT) | |
127 | BIOerr(BIO_F_BIO_NEW_FILE, BIO_R_NO_SUCH_FILE); | |
128 | else | |
129 | BIOerr(BIO_F_BIO_NEW_FILE, ERR_R_SYS_LIB); | |
130 | return (NULL); | |
131 | } | |
132 | if ((ret = BIO_new(BIO_s_file_internal())) == NULL) { | |
133 | fclose(file); | |
134 | return (NULL); | |
135 | } | |
d02b48c6 | 136 | |
40720ce3 MC |
137 | BIO_clear_flags(ret, BIO_FLAGS_UPLINK); /* we did fopen -> we disengage |
138 | * UPLINK */ | |
139 | BIO_set_fp(ret, file, BIO_CLOSE); | |
140 | return (ret); | |
141 | } | |
d02b48c6 | 142 | |
6b691a5c | 143 | BIO *BIO_new_fp(FILE *stream, int close_flag) |
40720ce3 MC |
144 | { |
145 | BIO *ret; | |
d02b48c6 | 146 | |
40720ce3 MC |
147 | if ((ret = BIO_new(BIO_s_file())) == NULL) |
148 | return (NULL); | |
d02b48c6 | 149 | |
40720ce3 MC |
150 | BIO_set_flags(ret, BIO_FLAGS_UPLINK); /* redundant, left for |
151 | * documentation puposes */ | |
152 | BIO_set_fp(ret, stream, close_flag); | |
153 | return (ret); | |
154 | } | |
d02b48c6 | 155 | |
6b691a5c | 156 | BIO_METHOD *BIO_s_file(void) |
40720ce3 MC |
157 | { |
158 | return (&methods_filep); | |
159 | } | |
d02b48c6 | 160 | |
6b691a5c | 161 | static int MS_CALLBACK file_new(BIO *bi) |
40720ce3 MC |
162 | { |
163 | bi->init = 0; | |
164 | bi->num = 0; | |
165 | bi->ptr = NULL; | |
166 | bi->flags = BIO_FLAGS_UPLINK; /* default to UPLINK */ | |
167 | return (1); | |
168 | } | |
d02b48c6 | 169 | |
6b691a5c | 170 | static int MS_CALLBACK file_free(BIO *a) |
40720ce3 MC |
171 | { |
172 | if (a == NULL) | |
173 | return (0); | |
174 | if (a->shutdown) { | |
175 | if ((a->init) && (a->ptr != NULL)) { | |
176 | if (a->flags & BIO_FLAGS_UPLINK) | |
177 | UP_fclose(a->ptr); | |
178 | else | |
179 | fclose(a->ptr); | |
180 | a->ptr = NULL; | |
181 | a->flags = BIO_FLAGS_UPLINK; | |
182 | } | |
183 | a->init = 0; | |
184 | } | |
185 | return (1); | |
186 | } | |
187 | ||
6b691a5c | 188 | static int MS_CALLBACK file_read(BIO *b, char *out, int outl) |
40720ce3 MC |
189 | { |
190 | int ret = 0; | |
d02b48c6 | 191 | |
40720ce3 MC |
192 | if (b->init && (out != NULL)) { |
193 | if (b->flags & BIO_FLAGS_UPLINK) | |
194 | ret = UP_fread(out, 1, (int)outl, b->ptr); | |
195 | else | |
196 | ret = fread(out, 1, (int)outl, (FILE *)b->ptr); | |
197 | if (ret == 0 | |
6f1f3c66 | 198 | && (b->flags & BIO_FLAGS_UPLINK) ? UP_ferror((FILE *)b->ptr) : |
40720ce3 MC |
199 | ferror((FILE *)b->ptr)) { |
200 | SYSerr(SYS_F_FREAD, get_last_sys_error()); | |
201 | BIOerr(BIO_F_FILE_READ, ERR_R_SYS_LIB); | |
202 | ret = -1; | |
203 | } | |
204 | } | |
205 | return (ret); | |
206 | } | |
d02b48c6 | 207 | |
0e1c0612 | 208 | static int MS_CALLBACK file_write(BIO *b, const char *in, int inl) |
40720ce3 MC |
209 | { |
210 | int ret = 0; | |
d02b48c6 | 211 | |
40720ce3 MC |
212 | if (b->init && (in != NULL)) { |
213 | if (b->flags & BIO_FLAGS_UPLINK) | |
214 | ret = UP_fwrite(in, (int)inl, 1, b->ptr); | |
215 | else | |
216 | ret = fwrite(in, (int)inl, 1, (FILE *)b->ptr); | |
217 | if (ret) | |
218 | ret = inl; | |
219 | /* ret=fwrite(in,1,(int)inl,(FILE *)b->ptr); */ | |
220 | /* | |
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) | |
224 | */ | |
225 | } | |
226 | return (ret); | |
227 | } | |
d02b48c6 | 228 | |
0e1c0612 | 229 | static long MS_CALLBACK file_ctrl(BIO *b, int cmd, long num, void *ptr) |
40720ce3 MC |
230 | { |
231 | long ret = 1; | |
232 | FILE *fp = (FILE *)b->ptr; | |
233 | FILE **fpp; | |
234 | char p[4]; | |
d02b48c6 | 235 | |
40720ce3 MC |
236 | switch (cmd) { |
237 | case BIO_C_FILE_SEEK: | |
238 | case BIO_CTRL_RESET: | |
239 | if (b->flags & BIO_FLAGS_UPLINK) | |
240 | ret = (long)UP_fseek(b->ptr, num, 0); | |
241 | else | |
242 | ret = (long)fseek(fp, num, 0); | |
243 | break; | |
244 | case BIO_CTRL_EOF: | |
245 | if (b->flags & BIO_FLAGS_UPLINK) | |
246 | ret = (long)UP_feof(fp); | |
247 | else | |
248 | ret = (long)feof(fp); | |
249 | break; | |
250 | case BIO_C_FILE_TELL: | |
251 | case BIO_CTRL_INFO: | |
252 | if (b->flags & BIO_FLAGS_UPLINK) | |
253 | ret = UP_ftell(b->ptr); | |
254 | else | |
255 | ret = ftell(fp); | |
256 | break; | |
257 | case BIO_C_SET_FILE_PTR: | |
258 | file_free(b); | |
259 | b->shutdown = (int)num & BIO_CLOSE; | |
260 | b->ptr = ptr; | |
261 | b->init = 1; | |
262 | # if BIO_FLAGS_UPLINK!=0 | |
263 | # if defined(__MINGW32__) && defined(__MSVCRT__) && !defined(_IOB_ENTRIES) | |
264 | # define _IOB_ENTRIES 20 | |
265 | # endif | |
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); | |
271 | # endif | |
272 | # endif | |
273 | # ifdef UP_fsetmod | |
274 | if (b->flags & BIO_FLAGS_UPLINK) | |
275 | UP_fsetmod(b->ptr, (char)((num & BIO_FP_TEXT) ? 't' : 'b')); | |
276 | else | |
277 | # endif | |
278 | { | |
279 | # if defined(OPENSSL_SYS_WINDOWS) | |
280 | int fd = _fileno((FILE *)ptr); | |
281 | if (num & BIO_FP_TEXT) | |
282 | _setmode(fd, _O_TEXT); | |
283 | else | |
284 | _setmode(fd, _O_BINARY); | |
285 | # elif defined(OPENSSL_SYS_NETWARE) && defined(NETWARE_CLIB) | |
286 | int fd = fileno((FILE *)ptr); | |
287 | /* | |
288 | * Under CLib there are differences in file modes | |
289 | */ | |
290 | if (num & BIO_FP_TEXT) | |
291 | setmode(fd, O_TEXT); | |
292 | else | |
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) */ | |
300 | else { | |
301 | if (fd == STDIN_FILENO || fd == STDOUT_FILENO) { | |
302 | if (isatty(fd) <= 0) | |
303 | _setmode(fd, _O_BINARY); | |
304 | } else | |
305 | _setmode(fd, _O_BINARY); | |
306 | } | |
307 | # elif defined(OPENSSL_SYS_OS2) | |
308 | int fd = fileno((FILE *)ptr); | |
309 | if (num & BIO_FP_TEXT) | |
310 | setmode(fd, O_TEXT); | |
311 | else | |
312 | setmode(fd, O_BINARY); | |
313 | # endif | |
314 | } | |
315 | break; | |
316 | case BIO_C_SET_FILENAME: | |
317 | file_free(b); | |
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); | |
322 | else | |
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); | |
330 | else { | |
331 | BIOerr(BIO_F_FILE_CTRL, BIO_R_BAD_FOPEN_MODE); | |
332 | ret = 0; | |
333 | break; | |
334 | } | |
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)) | |
337 | strcat(p, "b"); | |
338 | else | |
339 | strcat(p, "t"); | |
340 | # endif | |
341 | # if defined(OPENSSL_SYS_NETWARE) | |
342 | if (!(num & BIO_FP_TEXT)) | |
343 | strcat(p, "b"); | |
344 | else | |
345 | strcat(p, "t"); | |
346 | # endif | |
347 | fp = fopen(ptr, p); | |
348 | if (fp == NULL) { | |
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); | |
352 | ret = 0; | |
353 | break; | |
354 | } | |
355 | b->ptr = fp; | |
356 | b->init = 1; | |
357 | BIO_clear_flags(b, BIO_FLAGS_UPLINK); /* we did fopen -> we disengage | |
358 | * UPLINK */ | |
359 | break; | |
360 | case BIO_C_GET_FILE_PTR: | |
361 | /* the ptr parameter is actually a FILE ** in this case. */ | |
362 | if (ptr != NULL) { | |
363 | fpp = (FILE **)ptr; | |
364 | *fpp = (FILE *)b->ptr; | |
365 | } | |
366 | break; | |
367 | case BIO_CTRL_GET_CLOSE: | |
368 | ret = (long)b->shutdown; | |
369 | break; | |
370 | case BIO_CTRL_SET_CLOSE: | |
371 | b->shutdown = (int)num; | |
372 | break; | |
373 | case BIO_CTRL_FLUSH: | |
374 | if (b->flags & BIO_FLAGS_UPLINK) | |
375 | UP_fflush(b->ptr); | |
376 | else | |
377 | fflush((FILE *)b->ptr); | |
378 | break; | |
379 | case BIO_CTRL_DUP: | |
380 | ret = 1; | |
381 | break; | |
d02b48c6 | 382 | |
40720ce3 MC |
383 | case BIO_CTRL_WPENDING: |
384 | case BIO_CTRL_PENDING: | |
385 | case BIO_CTRL_PUSH: | |
386 | case BIO_CTRL_POP: | |
387 | default: | |
388 | ret = 0; | |
389 | break; | |
390 | } | |
391 | return (ret); | |
392 | } | |
d02b48c6 | 393 | |
6b691a5c | 394 | static int MS_CALLBACK file_gets(BIO *bp, char *buf, int size) |
40720ce3 MC |
395 | { |
396 | int ret = 0; | |
d02b48c6 | 397 | |
40720ce3 MC |
398 | buf[0] = '\0'; |
399 | if (bp->flags & BIO_FLAGS_UPLINK) { | |
400 | if (!UP_fgets(buf, size, bp->ptr)) | |
401 | goto err; | |
402 | } else { | |
403 | if (!fgets(buf, size, (FILE *)bp->ptr)) | |
404 | goto err; | |
405 | } | |
406 | if (buf[0] != '\0') | |
407 | ret = strlen(buf); | |
408 | err: | |
409 | return (ret); | |
410 | } | |
d02b48c6 | 411 | |
0e1c0612 | 412 | static int MS_CALLBACK file_puts(BIO *bp, const char *str) |
40720ce3 MC |
413 | { |
414 | int n, ret; | |
58964a49 | 415 | |
40720ce3 MC |
416 | n = strlen(str); |
417 | ret = file_write(bp, str, n); | |
418 | return (ret); | |
419 | } | |
58964a49 | 420 | |
40720ce3 | 421 | # endif /* OPENSSL_NO_STDIO */ |
58964a49 | 422 | |
40720ce3 | 423 | #endif /* HEADER_BSS_FILE_C */ |