source: EcnlProtoTool/trunk/openssl-1.1.0e/crypto/bio/bss_file.c@ 331

Last change on this file since 331 was 331, checked in by coas-nagasima, 6 years ago

prototoolに関連するプロジェクトをnewlibからmuslを使うよう変更・更新
ntshellをnewlibの下位の実装から、muslのsyscallの実装に変更・更新
以下のOSSをアップデート
・mruby-1.3.0
・musl-1.1.18
・onigmo-6.1.3
・tcc-0.9.27
以下のOSSを追加
・openssl-1.1.0e
・curl-7.57.0
・zlib-1.2.11
以下のmrbgemsを追加
・iij/mruby-digest
・iij/mruby-env
・iij/mruby-errno
・iij/mruby-iijson
・iij/mruby-ipaddr
・iij/mruby-mock
・iij/mruby-require
・iij/mruby-tls-openssl
  • Property svn:eol-style set to native
  • Property svn:mime-type set to text/x-csrc
File size: 11.0 KB
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1/*
2 * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the OpenSSL license (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10/*-
11 * 03-Dec-1997 rdenny@dc3.com Fix bug preventing use of stdin/stdout
12 * with binary data (e.g. asn1parse -inform DER < xxx) under
13 * Windows
14 */
15
16#ifndef HEADER_BSS_FILE_C
17# define HEADER_BSS_FILE_C
18
19# if defined(__linux) || defined(__sun) || defined(__hpux)
20/*
21 * Following definition aliases fopen to fopen64 on above mentioned
22 * platforms. This makes it possible to open and sequentially access files
23 * larger than 2GB from 32-bit application. It does not allow to traverse
24 * them beyond 2GB with fseek/ftell, but on the other hand *no* 32-bit
25 * platform permits that, not with fseek/ftell. Not to mention that breaking
26 * 2GB limit for seeking would require surgery to *our* API. But sequential
27 * access suffices for practical cases when you can run into large files,
28 * such as fingerprinting, so we can let API alone. For reference, the list
29 * of 32-bit platforms which allow for sequential access of large files
30 * without extra "magic" comprise *BSD, Darwin, IRIX...
31 */
32# ifndef _FILE_OFFSET_BITS
33# define _FILE_OFFSET_BITS 64
34# endif
35# endif
36
37# include <stdio.h>
38# include <errno.h>
39# include "bio_lcl.h"
40# include <openssl/err.h>
41
42# if !defined(OPENSSL_NO_STDIO)
43
44static int file_write(BIO *h, const char *buf, int num);
45static int file_read(BIO *h, char *buf, int size);
46static int file_puts(BIO *h, const char *str);
47static int file_gets(BIO *h, char *str, int size);
48static long file_ctrl(BIO *h, int cmd, long arg1, void *arg2);
49static int file_new(BIO *h);
50static int file_free(BIO *data);
51static const BIO_METHOD methods_filep = {
52 BIO_TYPE_FILE,
53 "FILE pointer",
54 file_write,
55 file_read,
56 file_puts,
57 file_gets,
58 file_ctrl,
59 file_new,
60 file_free,
61 NULL,
62};
63
64BIO *BIO_new_file(const char *filename, const char *mode)
65{
66 BIO *ret;
67 FILE *file = openssl_fopen(filename, mode);
68 int fp_flags = BIO_CLOSE;
69
70 if (strchr(mode, 'b') == NULL)
71 fp_flags |= BIO_FP_TEXT;
72
73 if (file == NULL) {
74 SYSerr(SYS_F_FOPEN, get_last_sys_error());
75 ERR_add_error_data(5, "fopen('", filename, "','", mode, "')");
76 if (errno == ENOENT
77# ifdef ENXIO
78 || errno == ENXIO
79# endif
80 )
81 BIOerr(BIO_F_BIO_NEW_FILE, BIO_R_NO_SUCH_FILE);
82 else
83 BIOerr(BIO_F_BIO_NEW_FILE, ERR_R_SYS_LIB);
84 return (NULL);
85 }
86 if ((ret = BIO_new(BIO_s_file())) == NULL) {
87 fclose(file);
88 return (NULL);
89 }
90
91 BIO_clear_flags(ret, BIO_FLAGS_UPLINK); /* we did fopen -> we disengage
92 * UPLINK */
93 BIO_set_fp(ret, file, fp_flags);
94 return (ret);
95}
96
97BIO *BIO_new_fp(FILE *stream, int close_flag)
98{
99 BIO *ret;
100
101 if ((ret = BIO_new(BIO_s_file())) == NULL)
102 return (NULL);
103
104 /* redundant flag, left for documentation purposes */
105 BIO_set_flags(ret, BIO_FLAGS_UPLINK);
106 BIO_set_fp(ret, stream, close_flag);
107 return (ret);
108}
109
110const BIO_METHOD *BIO_s_file(void)
111{
112 return (&methods_filep);
113}
114
115static int file_new(BIO *bi)
116{
117 bi->init = 0;
118 bi->num = 0;
119 bi->ptr = NULL;
120 bi->flags = BIO_FLAGS_UPLINK; /* default to UPLINK */
121 return (1);
122}
123
124static int file_free(BIO *a)
125{
126 if (a == NULL)
127 return (0);
128 if (a->shutdown) {
129 if ((a->init) && (a->ptr != NULL)) {
130 if (a->flags & BIO_FLAGS_UPLINK)
131 UP_fclose(a->ptr);
132 else
133 fclose(a->ptr);
134 a->ptr = NULL;
135 a->flags = BIO_FLAGS_UPLINK;
136 }
137 a->init = 0;
138 }
139 return (1);
140}
141
142static int file_read(BIO *b, char *out, int outl)
143{
144 int ret = 0;
145
146 if (b->init && (out != NULL)) {
147 if (b->flags & BIO_FLAGS_UPLINK)
148 ret = UP_fread(out, 1, (int)outl, b->ptr);
149 else
150 ret = fread(out, 1, (int)outl, (FILE *)b->ptr);
151 if (ret == 0
152 && (b->flags & BIO_FLAGS_UPLINK) ? UP_ferror((FILE *)b->ptr) :
153 ferror((FILE *)b->ptr)) {
154 SYSerr(SYS_F_FREAD, get_last_sys_error());
155 BIOerr(BIO_F_FILE_READ, ERR_R_SYS_LIB);
156 ret = -1;
157 }
158 }
159 return (ret);
160}
161
162static int file_write(BIO *b, const char *in, int inl)
163{
164 int ret = 0;
165
166 if (b->init && (in != NULL)) {
167 if (b->flags & BIO_FLAGS_UPLINK)
168 ret = UP_fwrite(in, (int)inl, 1, b->ptr);
169 else
170 ret = fwrite(in, (int)inl, 1, (FILE *)b->ptr);
171 if (ret)
172 ret = inl;
173 /* ret=fwrite(in,1,(int)inl,(FILE *)b->ptr); */
174 /*
175 * according to Tim Hudson <tjh@cryptsoft.com>, the commented out
176 * version above can cause 'inl' write calls under some stupid stdio
177 * implementations (VMS)
178 */
179 }
180 return (ret);
181}
182
183static long file_ctrl(BIO *b, int cmd, long num, void *ptr)
184{
185 long ret = 1;
186 FILE *fp = (FILE *)b->ptr;
187 FILE **fpp;
188 char p[4];
189
190 switch (cmd) {
191 case BIO_C_FILE_SEEK:
192 case BIO_CTRL_RESET:
193 if (b->flags & BIO_FLAGS_UPLINK)
194 ret = (long)UP_fseek(b->ptr, num, 0);
195 else
196 ret = (long)fseek(fp, num, 0);
197 break;
198 case BIO_CTRL_EOF:
199 if (b->flags & BIO_FLAGS_UPLINK)
200 ret = (long)UP_feof(fp);
201 else
202 ret = (long)feof(fp);
203 break;
204 case BIO_C_FILE_TELL:
205 case BIO_CTRL_INFO:
206 if (b->flags & BIO_FLAGS_UPLINK)
207 ret = UP_ftell(b->ptr);
208 else
209 ret = ftell(fp);
210 break;
211 case BIO_C_SET_FILE_PTR:
212 file_free(b);
213 b->shutdown = (int)num & BIO_CLOSE;
214 b->ptr = ptr;
215 b->init = 1;
216# if BIO_FLAGS_UPLINK!=0
217# if defined(__MINGW32__) && defined(__MSVCRT__) && !defined(_IOB_ENTRIES)
218# define _IOB_ENTRIES 20
219# endif
220 /* Safety net to catch purely internal BIO_set_fp calls */
221# if defined(_MSC_VER) && _MSC_VER>=1900
222 if (ptr == stdin || ptr == stdout || ptr == stderr)
223 BIO_clear_flags(b, BIO_FLAGS_UPLINK);
224# elif defined(_IOB_ENTRIES)
225 if ((size_t)ptr >= (size_t)stdin &&
226 (size_t)ptr < (size_t)(stdin + _IOB_ENTRIES))
227 BIO_clear_flags(b, BIO_FLAGS_UPLINK);
228# endif
229# endif
230# ifdef UP_fsetmod
231 if (b->flags & BIO_FLAGS_UPLINK)
232 UP_fsetmod(b->ptr, (char)((num & BIO_FP_TEXT) ? 't' : 'b'));
233 else
234# endif
235 {
236# if defined(OPENSSL_SYS_WINDOWS)
237 int fd = _fileno((FILE *)ptr);
238 if (num & BIO_FP_TEXT)
239 _setmode(fd, _O_TEXT);
240 else
241 _setmode(fd, _O_BINARY);
242# elif defined(OPENSSL_SYS_MSDOS)
243 int fd = fileno((FILE *)ptr);
244 /* Set correct text/binary mode */
245 if (num & BIO_FP_TEXT)
246 _setmode(fd, _O_TEXT);
247 /* Dangerous to set stdin/stdout to raw (unless redirected) */
248 else {
249 if (fd == STDIN_FILENO || fd == STDOUT_FILENO) {
250 if (isatty(fd) <= 0)
251 _setmode(fd, _O_BINARY);
252 } else
253 _setmode(fd, _O_BINARY);
254 }
255# elif defined(OPENSSL_SYS_WIN32_CYGWIN)
256 int fd = fileno((FILE *)ptr);
257 if (num & BIO_FP_TEXT)
258 setmode(fd, O_TEXT);
259 else
260 setmode(fd, O_BINARY);
261# endif
262 }
263 break;
264 case BIO_C_SET_FILENAME:
265 file_free(b);
266 b->shutdown = (int)num & BIO_CLOSE;
267 if (num & BIO_FP_APPEND) {
268 if (num & BIO_FP_READ)
269 OPENSSL_strlcpy(p, "a+", sizeof p);
270 else
271 OPENSSL_strlcpy(p, "a", sizeof p);
272 } else if ((num & BIO_FP_READ) && (num & BIO_FP_WRITE))
273 OPENSSL_strlcpy(p, "r+", sizeof p);
274 else if (num & BIO_FP_WRITE)
275 OPENSSL_strlcpy(p, "w", sizeof p);
276 else if (num & BIO_FP_READ)
277 OPENSSL_strlcpy(p, "r", sizeof p);
278 else {
279 BIOerr(BIO_F_FILE_CTRL, BIO_R_BAD_FOPEN_MODE);
280 ret = 0;
281 break;
282 }
283# if defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_WIN32_CYGWIN)
284 if (!(num & BIO_FP_TEXT))
285 strcat(p, "b");
286 else
287 strcat(p, "t");
288# endif
289 fp = openssl_fopen(ptr, p);
290 if (fp == NULL) {
291 SYSerr(SYS_F_FOPEN, get_last_sys_error());
292 ERR_add_error_data(5, "fopen('", ptr, "','", p, "')");
293 BIOerr(BIO_F_FILE_CTRL, ERR_R_SYS_LIB);
294 ret = 0;
295 break;
296 }
297 b->ptr = fp;
298 b->init = 1;
299 BIO_clear_flags(b, BIO_FLAGS_UPLINK); /* we did fopen -> we disengage
300 * UPLINK */
301 break;
302 case BIO_C_GET_FILE_PTR:
303 /* the ptr parameter is actually a FILE ** in this case. */
304 if (ptr != NULL) {
305 fpp = (FILE **)ptr;
306 *fpp = (FILE *)b->ptr;
307 }
308 break;
309 case BIO_CTRL_GET_CLOSE:
310 ret = (long)b->shutdown;
311 break;
312 case BIO_CTRL_SET_CLOSE:
313 b->shutdown = (int)num;
314 break;
315 case BIO_CTRL_FLUSH:
316 if (b->flags & BIO_FLAGS_UPLINK)
317 UP_fflush(b->ptr);
318 else
319 fflush((FILE *)b->ptr);
320 break;
321 case BIO_CTRL_DUP:
322 ret = 1;
323 break;
324
325 case BIO_CTRL_WPENDING:
326 case BIO_CTRL_PENDING:
327 case BIO_CTRL_PUSH:
328 case BIO_CTRL_POP:
329 default:
330 ret = 0;
331 break;
332 }
333 return (ret);
334}
335
336static int file_gets(BIO *bp, char *buf, int size)
337{
338 int ret = 0;
339
340 buf[0] = '\0';
341 if (bp->flags & BIO_FLAGS_UPLINK) {
342 if (!UP_fgets(buf, size, bp->ptr))
343 goto err;
344 } else {
345 if (!fgets(buf, size, (FILE *)bp->ptr))
346 goto err;
347 }
348 if (buf[0] != '\0')
349 ret = strlen(buf);
350 err:
351 return (ret);
352}
353
354static int file_puts(BIO *bp, const char *str)
355{
356 int n, ret;
357
358 n = strlen(str);
359 ret = file_write(bp, str, n);
360 return (ret);
361}
362
363#else
364
365static int file_write(BIO *b, const char *in, int inl)
366{
367 return -1;
368}
369static int file_read(BIO *b, char *out, int outl)
370{
371 return -1;
372}
373static int file_puts(BIO *bp, const char *str)
374{
375 return -1;
376}
377static int file_gets(BIO *bp, char *buf, int size)
378{
379 return 0;
380}
381static long file_ctrl(BIO *b, int cmd, long num, void *ptr)
382{
383 return 0;
384}
385static int file_new(BIO *bi)
386{
387 return 0;
388}
389static int file_free(BIO *a)
390{
391 return 0;
392}
393
394static const BIO_METHOD methods_filep = {
395 BIO_TYPE_FILE,
396 "FILE pointer",
397 file_write,
398 file_read,
399 file_puts,
400 file_gets,
401 file_ctrl,
402 file_new,
403 file_free,
404 NULL,
405};
406
407const BIO_METHOD *BIO_s_file(void)
408{
409 return (&methods_filep);
410}
411
412BIO *BIO_new_file(const char *filename, const char *mode)
413{
414 return NULL;
415}
416
417# endif /* OPENSSL_NO_STDIO */
418
419#endif /* HEADER_BSS_FILE_C */
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