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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(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 BIOerr(BIO_F_BIO_NEW_FILE,ERR_R_SYS_LIB);
107 return(NULL);
108 }
109 if ((ret=BIO_new(BIO_s_file_internal())) == NULL)
110 return(NULL);
111
112 BIO_set_fp(ret,file,BIO_CLOSE);
113 return(ret);
114 }
115
116BIO *BIO_new_fp(FILE *stream, int close_flag)
117 {
118 BIO *ret;
119
120 if ((ret=BIO_new(BIO_s_file())) == NULL)
121 return(NULL);
122
123 BIO_set_fp(ret,stream,close_flag);
124 return(ret);
125 }
126
127BIO_METHOD *BIO_s_file(void)
128 {
129 return(&methods_filep);
130 }
131
132static int MS_CALLBACK file_new(BIO *bi)
133 {
134 bi->init=0;
135 bi->num=0;
136 bi->ptr=NULL;
137 return(1);
138 }
139
140static int MS_CALLBACK file_free(BIO *a)
141 {
142 if (a == NULL) return(0);
143 if (a->shutdown)
144 {
145 if ((a->init) && (a->ptr != NULL))
146 {
147 fclose((FILE *)a->ptr);
148 a->ptr=NULL;
149 }
150 a->init=0;
151 }
152 return(1);
153 }
154
155static int MS_CALLBACK file_read(BIO *b, char *out, int outl)
156 {
157 int ret=0;
158
159 if (b->init && (out != NULL))
160 {
161 ret=fread(out,1,(int)outl,(FILE *)b->ptr);
162 }
163 return(ret);
164 }
165
166static int MS_CALLBACK file_write(BIO *b, const char *in, int inl)
167 {
168 int ret=0;
169
170 if (b->init && (in != NULL))
171 {
172 if (fwrite(in,(int)inl,1,(FILE *)b->ptr))
173 ret=inl;
174 /* ret=fwrite(in,1,(int)inl,(FILE *)b->ptr); */
175 /* according to Tim Hudson <tjh@cryptsoft.com>, the commented
176 * out version above can cause 'inl' write calls under
177 * some stupid stdio implementations (VMS) */
178 }
179 return(ret);
180 }
181
182static long MS_CALLBACK file_ctrl(BIO *b, int cmd, long num, void *ptr)
183 {
184 long ret=1;
185 FILE *fp=(FILE *)b->ptr;
186 FILE **fpp;
187 char p[4];
188
189 switch (cmd)
190 {
191 case BIO_C_FILE_SEEK:
192 case BIO_CTRL_RESET:
193 ret=(long)fseek(fp,num,0);
194 break;
195 case BIO_CTRL_EOF:
196 ret=(long)feof(fp);
197 break;
198 case BIO_C_FILE_TELL:
199 case BIO_CTRL_INFO:
200 ret=ftell(fp);
201 break;
202 case BIO_C_SET_FILE_PTR:
203 file_free(b);
204 b->shutdown=(int)num&BIO_CLOSE;
205 b->ptr=(char *)ptr;
206 b->init=1;
207#if defined(MSDOS) || defined(WINDOWS)
208 /* Set correct text/binary mode */
209 if (num & BIO_FP_TEXT)
210 _setmode(fileno((FILE *)ptr),_O_TEXT);
211 else
212 _setmode(fileno((FILE *)ptr),_O_BINARY);
213#endif
214 break;
215 case BIO_C_SET_FILENAME:
216 file_free(b);
217 b->shutdown=(int)num&BIO_CLOSE;
218 if (num & BIO_FP_APPEND)
219 {
220 if (num & BIO_FP_READ)
221 strcpy(p,"a+");
222 else strcpy(p,"a");
223 }
224 else if ((num & BIO_FP_READ) && (num & BIO_FP_WRITE))
225 strcpy(p,"r+");
226 else if (num & BIO_FP_WRITE)
227 strcpy(p,"w");
228 else if (num & BIO_FP_READ)
229 strcpy(p,"r");
230 else
231 {
232 BIOerr(BIO_F_FILE_CTRL,BIO_R_BAD_FOPEN_MODE);
233 ret=0;
234 break;
235 }
236#if defined(MSDOS) || defined(WINDOWS)
237 if (!(num & BIO_FP_TEXT))
238 strcat(p,"b");
239 else
240 strcat(p,"t");
241#endif
242 fp=fopen(ptr,p);
243 if (fp == NULL)
244 {
245 SYSerr(SYS_F_FOPEN,get_last_sys_error());
246 ERR_add_error_data(5,"fopen('",ptr,"','",p,"')");
247 BIOerr(BIO_F_FILE_CTRL,ERR_R_SYS_LIB);
248 ret=0;
249 break;
250 }
251 b->ptr=(char *)fp;
252 b->init=1;
253 break;
254 case BIO_C_GET_FILE_PTR:
255 /* the ptr parameter is actually a FILE ** in this case. */
256 if (ptr != NULL)
257 {
258 fpp=(FILE **)ptr;
259 *fpp=(FILE *)b->ptr;
260 }
261 break;
262 case BIO_CTRL_GET_CLOSE:
263 ret=(long)b->shutdown;
264 break;
265 case BIO_CTRL_SET_CLOSE:
266 b->shutdown=(int)num;
267 break;
268 case BIO_CTRL_FLUSH:
269 fflush((FILE *)b->ptr);
270 break;
271 case BIO_CTRL_DUP:
272 ret=1;
273 break;
274
275 case BIO_CTRL_WPENDING:
276 case BIO_CTRL_PENDING:
277 case BIO_CTRL_PUSH:
278 case BIO_CTRL_POP:
279 default:
280 ret=0;
281 break;
282 }
283 return(ret);
284 }
285
286static int MS_CALLBACK file_gets(BIO *bp, char *buf, int size)
287 {
288 int ret=0;
289
290 buf[0]='\0';
291 fgets(buf,size,(FILE *)bp->ptr);
292 if (buf[0] != '\0')
293 ret=strlen(buf);
294 return(ret);
295 }
296
297static int MS_CALLBACK file_puts(BIO *bp, const char *str)
298 {
299 int n,ret;
300
301 n=strlen(str);
302 ret=file_write(bp,str,n);
303 return(ret);
304 }
305
306#endif /* NO_STDIO */
307
308#endif /* HEADER_BSS_FILE_C */
309
310
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