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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,char *buf,int num);
77static int MS_CALLBACK file_read(BIO *h,char *buf,int size);
78static int MS_CALLBACK file_puts(BIO *h,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,char *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 };
95
96BIO *BIO_new_file(const char *filename, const char *mode)
97 {
98 BIO *ret;
99 FILE *file;
100
101 if ((file=fopen(filename,mode)) == NULL)
102 {
103 SYSerr(SYS_F_FOPEN,get_last_sys_error());
104 ERR_add_error_data(5,"fopen('",filename,"','",mode,"')");
105 BIOerr(BIO_F_BIO_NEW_FILE,ERR_R_SYS_LIB);
106 return(NULL);
107 }
108 if ((ret=BIO_new(BIO_s_file_internal())) == NULL)
109 return(NULL);
110
111 BIO_set_fp(ret,file,BIO_CLOSE);
112 return(ret);
113 }
114
115BIO *BIO_new_fp(FILE *stream, int close_flag)
116 {
117 BIO *ret;
118
119 if ((ret=BIO_new(BIO_s_file())) == NULL)
120 return(NULL);
121
122 BIO_set_fp(ret,stream,close_flag);
123 return(ret);
124 }
125
126BIO_METHOD *BIO_s_file(void)
127 {
128 return(&methods_filep);
129 }
130
131static int MS_CALLBACK file_new(BIO *bi)
132 {
133 bi->init=0;
134 bi->num=0;
135 bi->ptr=NULL;
136 return(1);
137 }
138
139static int MS_CALLBACK file_free(BIO *a)
140 {
141 if (a == NULL) return(0);
142 if (a->shutdown)
143 {
144 if ((a->init) && (a->ptr != NULL))
145 {
146 fclose((FILE *)a->ptr);
147 a->ptr=NULL;
148 }
149 a->init=0;
150 }
151 return(1);
152 }
153
154static int MS_CALLBACK file_read(BIO *b, char *out, int outl)
155 {
156 int ret=0;
157
158 if (b->init && (out != NULL))
159 {
160 ret=fread(out,1,(int)outl,(FILE *)b->ptr);
161 }
162 return(ret);
163 }
164
165static int MS_CALLBACK file_write(BIO *b, char *in, int inl)
166 {
167 int ret=0;
168
169 if (b->init && (in != NULL))
170 {
171 if (fwrite(in,(int)inl,1,(FILE *)b->ptr))
172 ret=inl;
173 /* ret=fwrite(in,1,(int)inl,(FILE *)b->ptr); */
174 /* acording to Tim Hudson <tjh@cryptsoft.com>, the commented
175 * out version above can cause 'inl' write calls under
176 * some stupid stdio implementations (VMS) */
177 }
178 return(ret);
179 }
180
181static long MS_CALLBACK file_ctrl(BIO *b, int cmd, long num, char *ptr)
182 {
183 long ret=1;
184 FILE *fp=(FILE *)b->ptr;
185 FILE **fpp;
186 char p[4];
187
188 switch (cmd)
189 {
190 case BIO_C_FILE_SEEK:
191 case BIO_CTRL_RESET:
192 ret=(long)fseek(fp,num,0);
193 break;
194 case BIO_CTRL_EOF:
195 ret=(long)feof(fp);
196 break;
197 case BIO_C_FILE_TELL:
198 case BIO_CTRL_INFO:
199 ret=ftell(fp);
200 break;
201 case BIO_C_SET_FILE_PTR:
202 file_free(b);
203 b->shutdown=(int)num&BIO_CLOSE;
204 b->ptr=(char *)ptr;
205 b->init=1;
206#if defined(MSDOS) || defined(WINDOWS)
207 /* Set correct text/binary mode */
208 if (num & BIO_FP_TEXT)
209 _setmode(fileno((FILE *)ptr),_O_TEXT);
210 else
211 _setmode(fileno((FILE *)ptr),_O_BINARY);
212#endif
213 break;
214 case BIO_C_SET_FILENAME:
215 file_free(b);
216 b->shutdown=(int)num&BIO_CLOSE;
217 if (num & BIO_FP_APPEND)
218 {
219 if (num & BIO_FP_READ)
220 strcpy(p,"a+");
221 else strcpy(p,"a");
222 }
223 else if ((num & BIO_FP_READ) && (num & BIO_FP_WRITE))
224 strcpy(p,"r+");
225 else if (num & BIO_FP_WRITE)
226 strcpy(p,"w");
227 else if (num & BIO_FP_READ)
228 strcpy(p,"r");
229 else
230 {
231 BIOerr(BIO_F_FILE_CTRL,BIO_R_BAD_FOPEN_MODE);
232 ret=0;
233 break;
234 }
235#if defined(MSDOS) || defined(WINDOWS)
236 if (!(num & BIO_FP_TEXT))
237 strcat(p,"b");
238 else
239 strcat(p,"t");
240#endif
241 fp=fopen(ptr,p);
242 if (fp == NULL)
243 {
244 SYSerr(SYS_F_FOPEN,get_last_sys_error());
245 ERR_add_error_data(5,"fopen('",ptr,"','",p,"')");
246 BIOerr(BIO_F_FILE_CTRL,ERR_R_SYS_LIB);
247 ret=0;
248 break;
249 }
250 b->ptr=(char *)fp;
251 b->init=1;
252 break;
253 case BIO_C_GET_FILE_PTR:
254 /* the ptr parameter is actually a FILE ** in this case. */
255 if (ptr != NULL)
256 {
257 fpp=(FILE **)ptr;
258 *fpp=(FILE *)b->ptr;
259 }
260 break;
261 case BIO_CTRL_GET_CLOSE:
262 ret=(long)b->shutdown;
263 break;
264 case BIO_CTRL_SET_CLOSE:
265 b->shutdown=(int)num;
266 break;
267 case BIO_CTRL_FLUSH:
268 fflush((FILE *)b->ptr);
269 break;
270 case BIO_CTRL_DUP:
271 ret=1;
272 break;
273
274 case BIO_CTRL_WPENDING:
275 case BIO_CTRL_PENDING:
276 case BIO_CTRL_PUSH:
277 case BIO_CTRL_POP:
278 default:
279 ret=0;
280 break;
281 }
282 return(ret);
283 }
284
285static int MS_CALLBACK file_gets(BIO *bp, char *buf, int size)
286 {
287 int ret=0;
288
289 buf[0]='\0';
290 fgets(buf,size,(FILE *)bp->ptr);
291 if (buf[0] != '\0')
292 ret=strlen(buf);
293 return(ret);
294 }
295
296static int MS_CALLBACK file_puts(BIO *bp, char *str)
297 {
298 int n,ret;
299
300 n=strlen(str);
301 ret=file_write(bp,str,n);
302 return(ret);
303 }
304
305#endif /* NO_STDIO */
306
307#endif /* HEADER_BSS_FILE_C */
308
309
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