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git.ipfire.org Git - thirdparty/openssl.git/blob - crypto/bio/bss_file.c
1 /* crypto/bio/bss_file.c */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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.
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).
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.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
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)"
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
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.]
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
65 #ifndef HEADER_BSS_FILE_C
66 #define HEADER_BSS_FILE_C
71 #include <openssl/bio.h>
72 #include <openssl/err.h>
74 #if !defined(OPENSSL_NO_STDIO)
76 static int MS_CALLBACK
file_write(BIO
*h
, const char *buf
, int num
);
77 static int MS_CALLBACK
file_read(BIO
*h
, char *buf
, int size
);
78 static int MS_CALLBACK
file_puts(BIO
*h
, const char *str
);
79 static int MS_CALLBACK
file_gets(BIO
*h
, char *str
, int size
);
80 static long MS_CALLBACK
file_ctrl(BIO
*h
, int cmd
, long arg1
, void *arg2
);
81 static int MS_CALLBACK
file_new(BIO
*h
);
82 static int MS_CALLBACK
file_free(BIO
*data
);
83 static BIO_METHOD methods_filep
=
97 BIO
*BIO_new_file(const char *filename
, const char *mode
)
102 if ((file
=fopen(filename
,mode
)) == NULL
)
104 SYSerr(SYS_F_FOPEN
,get_last_sys_error());
105 ERR_add_error_data(5,"fopen('",filename
,"','",mode
,"')");
107 BIOerr(BIO_F_BIO_NEW_FILE
,BIO_R_NO_SUCH_FILE
);
109 BIOerr(BIO_F_BIO_NEW_FILE
,ERR_R_SYS_LIB
);
112 if ((ret
=BIO_new(BIO_s_file_internal())) == NULL
)
115 BIO_set_fp(ret
,file
,BIO_CLOSE
);
119 BIO
*BIO_new_fp(FILE *stream
, int close_flag
)
123 if ((ret
=BIO_new(BIO_s_file())) == NULL
)
126 BIO_set_fp(ret
,stream
,close_flag
);
130 BIO_METHOD
*BIO_s_file(void)
132 return(&methods_filep
);
135 static int MS_CALLBACK
file_new(BIO
*bi
)
143 static int MS_CALLBACK
file_free(BIO
*a
)
145 if (a
== NULL
) return(0);
148 if ((a
->init
) && (a
->ptr
!= NULL
))
150 fclose((FILE *)a
->ptr
);
158 static int MS_CALLBACK
file_read(BIO
*b
, char *out
, int outl
)
162 if (b
->init
&& (out
!= NULL
))
164 ret
=fread(out
,1,(int)outl
,(FILE *)b
->ptr
);
165 if(ret
== 0 && ferror((FILE *)b
->ptr
))
167 SYSerr(SYS_F_FREAD
,get_last_sys_error());
168 BIOerr(BIO_F_FILE_READ
,ERR_R_SYS_LIB
);
175 static int MS_CALLBACK
file_write(BIO
*b
, const char *in
, int inl
)
179 if (b
->init
&& (in
!= NULL
))
181 if (fwrite(in
,(int)inl
,1,(FILE *)b
->ptr
))
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) */
191 static long MS_CALLBACK
file_ctrl(BIO
*b
, int cmd
, long num
, void *ptr
)
194 FILE *fp
=(FILE *)b
->ptr
;
200 case BIO_C_FILE_SEEK
:
202 ret
=(long)fseek(fp
,num
,0);
207 case BIO_C_FILE_TELL
:
211 case BIO_C_SET_FILE_PTR
:
213 b
->shutdown
=(int)num
&BIO_CLOSE
;
217 #if defined(OPENSSL_SYS_WINDOWS)
218 int fd
= fileno((FILE*)ptr
);
219 if (num
& BIO_FP_TEXT
)
220 _setmode(fd
,_O_TEXT
);
222 _setmode(fd
,_O_BINARY
);
223 #elif defined(OPENSSL_SYS_NETWARE) && defined(NETWARE_CLIB)
224 int fd
= fileno((FILE*)ptr
);
225 /* Under CLib there are differences in file modes
227 if (num
& BIO_FP_TEXT
)
230 _setmode(fd
,O_BINARY
);
231 #elif defined(OPENSSL_SYS_MSDOS)
232 int fd
= fileno((FILE*)ptr
);
233 /* Set correct text/binary mode */
234 if (num
& BIO_FP_TEXT
)
235 _setmode(fd
,_O_TEXT
);
236 /* Dangerous to set stdin/stdout to raw (unless redirected) */
239 if (fd
== STDIN_FILENO
|| fd
== STDOUT_FILENO
)
242 _setmode(fd
,_O_BINARY
);
245 _setmode(fd
,_O_BINARY
);
247 #elif defined(OPENSSL_SYS_OS2)
248 int fd
= fileno((FILE*)ptr
);
249 if (num
& BIO_FP_TEXT
)
252 setmode(fd
, O_BINARY
);
256 case BIO_C_SET_FILENAME
:
258 b
->shutdown
=(int)num
&BIO_CLOSE
;
259 if (num
& BIO_FP_APPEND
)
261 if (num
& BIO_FP_READ
)
262 BUF_strlcpy(p
,"a+",sizeof p
);
263 else BUF_strlcpy(p
,"a",sizeof p
);
265 else if ((num
& BIO_FP_READ
) && (num
& BIO_FP_WRITE
))
266 BUF_strlcpy(p
,"r+",sizeof p
);
267 else if (num
& BIO_FP_WRITE
)
268 BUF_strlcpy(p
,"w",sizeof p
);
269 else if (num
& BIO_FP_READ
)
270 BUF_strlcpy(p
,"r",sizeof p
);
273 BIOerr(BIO_F_FILE_CTRL
,BIO_R_BAD_FOPEN_MODE
);
277 #if defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_OS2)
278 if (!(num
& BIO_FP_TEXT
))
283 #if defined(OPENSSL_SYS_NETWARE)
284 if (!(num
& BIO_FP_TEXT
))
292 SYSerr(SYS_F_FOPEN
,get_last_sys_error());
293 ERR_add_error_data(5,"fopen('",ptr
,"','",p
,"')");
294 BIOerr(BIO_F_FILE_CTRL
,ERR_R_SYS_LIB
);
301 case BIO_C_GET_FILE_PTR
:
302 /* the ptr parameter is actually a FILE ** in this case. */
309 case BIO_CTRL_GET_CLOSE
:
310 ret
=(long)b
->shutdown
;
312 case BIO_CTRL_SET_CLOSE
:
313 b
->shutdown
=(int)num
;
316 fflush((FILE *)b
->ptr
);
322 case BIO_CTRL_WPENDING
:
323 case BIO_CTRL_PENDING
:
333 static int MS_CALLBACK
file_gets(BIO
*bp
, char *buf
, int size
)
338 fgets(buf
,size
,(FILE *)bp
->ptr
);
344 static int MS_CALLBACK
file_puts(BIO
*bp
, const char *str
)
349 ret
=file_write(bp
,str
,n
);
353 #endif /* OPENSSL_NO_STDIO */
355 #endif /* HEADER_BSS_FILE_C */