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diff --git a/src/lib/libcrypto/bio/bss_file.c b/src/lib/libcrypto/bio/bss_file.c
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1/* crypto/bio/bss_file.c */
2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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.
8 *
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).
15 *
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.
22 *
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 :-).
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)"
40 *
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.
52 *
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
59/*
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
63 */
64
65#ifndef HEADER_BSS_FILE_C
66#define HEADER_BSS_FILE_C
67
68#include <stdio.h>
69#include <errno.h>
70#include "cryptlib.h"
71#include <openssl/bio.h>
72#include <openssl/err.h>
73
74#if !defined(OPENSSL_NO_STDIO)
75
76static int MS_CALLBACK file_write(BIO *h, const char *buf, int num);
77static int MS_CALLBACK file_read(BIO *h, char *buf, int size);
78static int MS_CALLBACK file_puts(BIO *h, const char *str);
79static int MS_CALLBACK file_gets(BIO *h, char *str, int size);
80static long MS_CALLBACK file_ctrl(BIO *h, int cmd, long arg1, void *arg2);
81static int MS_CALLBACK file_new(BIO *h);
82static int MS_CALLBACK file_free(BIO *data);
83static BIO_METHOD methods_filep=
84 {
85 BIO_TYPE_FILE,
86 "FILE pointer",
87 file_write,
88 file_read,
89 file_puts,
90 file_gets,
91 file_ctrl,
92 file_new,
93 file_free,
94 NULL,
95 };
96
97BIO *BIO_new_file(const char *filename, const char *mode)
98 {
99 BIO *ret;
100 FILE *file;
101
102 if ((file=fopen(filename,mode)) == NULL)
103 {
104 SYSerr(SYS_F_FOPEN,get_last_sys_error());
105 ERR_add_error_data(5,"fopen('",filename,"','",mode,"')");
106 if (errno == ENOENT)
107 BIOerr(BIO_F_BIO_NEW_FILE,BIO_R_NO_SUCH_FILE);
108 else
109 BIOerr(BIO_F_BIO_NEW_FILE,ERR_R_SYS_LIB);
110 return(NULL);
111 }
112 if ((ret=BIO_new(BIO_s_file_internal())) == NULL)
113 return(NULL);
114
115 BIO_set_fp(ret,file,BIO_CLOSE);
116 return(ret);
117 }
118
119BIO *BIO_new_fp(FILE *stream, int close_flag)
120 {
121 BIO *ret;
122
123 if ((ret=BIO_new(BIO_s_file())) == NULL)
124 return(NULL);
125
126 BIO_set_fp(ret,stream,close_flag);
127 return(ret);
128 }
129
130BIO_METHOD *BIO_s_file(void)
131 {
132 return(&methods_filep);
133 }
134
135static int MS_CALLBACK file_new(BIO *bi)
136 {
137 bi->init=0;
138 bi->num=0;
139 bi->ptr=NULL;
140 return(1);
141 }
142
143static int MS_CALLBACK file_free(BIO *a)
144 {
145 if (a == NULL) return(0);
146 if (a->shutdown)
147 {
148 if ((a->init) && (a->ptr != NULL))
149 {
150 fclose((FILE *)a->ptr);
151 a->ptr=NULL;
152 }
153 a->init=0;
154 }
155 return(1);
156 }
157
158static int MS_CALLBACK file_read(BIO *b, char *out, int outl)
159 {
160 int ret=0;
161
162 if (b->init && (out != NULL))
163 {
164 ret=fread(out,1,(int)outl,(FILE *)b->ptr);
165 if(ret == 0 && ferror((FILE *)b->ptr))
166 {
167 SYSerr(SYS_F_FREAD,get_last_sys_error());
168 BIOerr(BIO_F_FILE_READ,ERR_R_SYS_LIB);
169 ret=-1;
170 }
171 }
172 return(ret);
173 }
174
175static int MS_CALLBACK file_write(BIO *b, const char *in, int inl)
176 {
177 int ret=0;
178
179 if (b->init && (in != NULL))
180 {
181 if (fwrite(in,(int)inl,1,(FILE *)b->ptr))
182 ret=inl;
183 /* ret=fwrite(in,1,(int)inl,(FILE *)b->ptr); */
184 /* according to Tim Hudson <tjh@cryptsoft.com>, the commented
185 * out version above can cause 'inl' write calls under
186 * some stupid stdio implementations (VMS) */
187 }
188 return(ret);
189 }
190
191static long MS_CALLBACK file_ctrl(BIO *b, int cmd, long num, void *ptr)
192 {
193 long ret=1;
194 FILE *fp=(FILE *)b->ptr;
195 FILE **fpp;
196 char p[4];
197
198 switch (cmd)
199 {
200 case BIO_C_FILE_SEEK:
201 case BIO_CTRL_RESET:
202 ret=(long)fseek(fp,num,0);
203 break;
204 case BIO_CTRL_EOF:
205 ret=(long)feof(fp);
206 break;
207 case BIO_C_FILE_TELL:
208 case BIO_CTRL_INFO:
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=(char *)ptr;
215 b->init=1;
216#if defined(OPENSSL_SYS_WINDOWS)
217 if (num & BIO_FP_TEXT)
218 _setmode(fileno((FILE *)ptr),_O_TEXT);
219 else
220 _setmode(fileno((FILE *)ptr),_O_BINARY);
221#elif defined(OPENSSL_SYS_MSDOS)
222 {
223 int fd = fileno((FILE*)ptr);
224 /* Set correct text/binary mode */
225 if (num & BIO_FP_TEXT)
226 _setmode(fd,_O_TEXT);
227 /* Dangerous to set stdin/stdout to raw (unless redirected) */
228 else
229 {
230 if (fd == STDIN_FILENO || fd == STDOUT_FILENO)
231 {
232 if (isatty(fd) <= 0)
233 _setmode(fd,_O_BINARY);
234 }
235 else
236 _setmode(fd,_O_BINARY);
237 }
238 }
239#elif defined(OPENSSL_SYS_OS2)
240 if (num & BIO_FP_TEXT)
241 setmode(fileno((FILE *)ptr), O_TEXT);
242 else
243 setmode(fileno((FILE *)ptr), O_BINARY);
244#endif
245 break;
246 case BIO_C_SET_FILENAME:
247 file_free(b);
248 b->shutdown=(int)num&BIO_CLOSE;
249 if (num & BIO_FP_APPEND)
250 {
251 if (num & BIO_FP_READ)
252 strlcpy(p,"a+",sizeof p);
253 else strlcpy(p,"a",sizeof p);
254 }
255 else if ((num & BIO_FP_READ) && (num & BIO_FP_WRITE))
256 strlcpy(p,"r+",sizeof p);
257 else if (num & BIO_FP_WRITE)
258 strlcpy(p,"w",sizeof p);
259 else if (num & BIO_FP_READ)
260 strlcpy(p,"r",sizeof p);
261 else
262 {
263 BIOerr(BIO_F_FILE_CTRL,BIO_R_BAD_FOPEN_MODE);
264 ret=0;
265 break;
266 }
267#if defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_OS2)
268 if (!(num & BIO_FP_TEXT))
269 strcat(p,"b");
270 else
271 strcat(p,"t");
272#endif
273 fp=fopen(ptr,p);
274 if (fp == NULL)
275 {
276 SYSerr(SYS_F_FOPEN,get_last_sys_error());
277 ERR_add_error_data(5,"fopen('",ptr,"','",p,"')");
278 BIOerr(BIO_F_FILE_CTRL,ERR_R_SYS_LIB);
279 ret=0;
280 break;
281 }
282 b->ptr=(char *)fp;
283 b->init=1;
284 break;
285 case BIO_C_GET_FILE_PTR:
286 /* the ptr parameter is actually a FILE ** in this case. */
287 if (ptr != NULL)
288 {
289 fpp=(FILE **)ptr;
290 *fpp=(FILE *)b->ptr;
291 }
292 break;
293 case BIO_CTRL_GET_CLOSE:
294 ret=(long)b->shutdown;
295 break;
296 case BIO_CTRL_SET_CLOSE:
297 b->shutdown=(int)num;
298 break;
299 case BIO_CTRL_FLUSH:
300 fflush((FILE *)b->ptr);
301 break;
302 case BIO_CTRL_DUP:
303 ret=1;
304 break;
305
306 case BIO_CTRL_WPENDING:
307 case BIO_CTRL_PENDING:
308 case BIO_CTRL_PUSH:
309 case BIO_CTRL_POP:
310 default:
311 ret=0;
312 break;
313 }
314 return(ret);
315 }
316
317static int MS_CALLBACK file_gets(BIO *bp, char *buf, int size)
318 {
319 int ret=0;
320
321 buf[0]='\0';
322 fgets(buf,size,(FILE *)bp->ptr);
323 if (buf[0] != '\0')
324 ret=strlen(buf);
325 return(ret);
326 }
327
328static int MS_CALLBACK file_puts(BIO *bp, const char *str)
329 {
330 int n,ret;
331
332 n=strlen(str);
333 ret=file_write(bp,str,n);
334 return(ret);
335 }
336
337#endif /* OPENSSL_NO_STDIO */
338
339#endif /* HEADER_BSS_FILE_C */
340
341
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