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
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_clear_flags(ret,BIO_FLAGS_UPLINK); /* we did fopen -> we disengage UPLINK */
116 BIO_set_fp(ret,file,BIO_CLOSE);
120 BIO *BIO_new_fp(FILE *stream, int close_flag)
124 if ((ret=BIO_new(BIO_s_file())) == NULL)
127 BIO_set_flags(ret,BIO_FLAGS_UPLINK); /* redundant, left for documentation puposes */
128 BIO_set_fp(ret,stream,close_flag);
132 BIO_METHOD *BIO_s_file(void)
134 return(&methods_filep);
137 static int MS_CALLBACK file_new(BIO *bi)
142 bi->flags=BIO_FLAGS_UPLINK; /* default to UPLINK */
146 static int MS_CALLBACK file_free(BIO *a)
148 if (a == NULL) return(0);
151 if ((a->init) && (a->ptr != NULL))
153 if (a->flags&BIO_FLAGS_UPLINK)
158 a->flags=BIO_FLAGS_UPLINK;
165 static int MS_CALLBACK file_read(BIO *b, char *out, int outl)
169 if (b->init && (out != NULL))
171 if (b->flags&BIO_FLAGS_UPLINK)
172 ret=UP_fread(out,1,(int)outl,b->ptr);
174 ret=fread(out,1,(int)outl,(FILE *)b->ptr);
175 if(ret == 0 && (b->flags&BIO_FLAGS_UPLINK)?UP_ferror((FILE *)b->ptr):ferror((FILE *)b->ptr))
177 SYSerr(SYS_F_FREAD,get_last_sys_error());
178 BIOerr(BIO_F_FILE_READ,ERR_R_SYS_LIB);
185 static int MS_CALLBACK file_write(BIO *b, const char *in, int inl)
189 if (b->init && (in != NULL))
191 if (b->flags&BIO_FLAGS_UPLINK)
192 ret=UP_fwrite(in,(int)inl,1,b->ptr);
194 ret=fwrite(in,(int)inl,1,(FILE *)b->ptr);
197 /* ret=fwrite(in,1,(int)inl,(FILE *)b->ptr); */
198 /* according to Tim Hudson <tjh@cryptsoft.com>, the commented
199 * out version above can cause 'inl' write calls under
200 * some stupid stdio implementations (VMS) */
205 static long MS_CALLBACK file_ctrl(BIO *b, int cmd, long num, void *ptr)
208 FILE *fp=(FILE *)b->ptr;
214 case BIO_C_FILE_SEEK:
216 if (b->flags&BIO_FLAGS_UPLINK)
217 ret=(long)UP_fseek(b->ptr,num,0);
219 ret=(long)fseek(fp,num,0);
222 if (b->flags&BIO_FLAGS_UPLINK)
223 ret=(long)UP_feof(fp);
227 case BIO_C_FILE_TELL:
229 if (b->flags&BIO_FLAGS_UPLINK)
230 ret=UP_ftell(b->ptr);
234 case BIO_C_SET_FILE_PTR:
236 b->shutdown=(int)num&BIO_CLOSE;
239 #if BIO_FLAGS_UPLINK!=0
240 #if defined(__MINGW32__) && defined(__MSVCRT__) && !defined(_IOB_ENTRIES)
241 #define _IOB_ENTRIES 20
243 #if defined(_IOB_ENTRIES)
244 /* Safety net to catch purely internal BIO_set_fp calls */
245 if ((size_t)ptr >= (size_t)stdin &&
246 (size_t)ptr < (size_t)(stdin+_IOB_ENTRIES))
247 BIO_clear_flags(b,BIO_FLAGS_UPLINK);
251 if (b->flags&BIO_FLAGS_UPLINK)
252 UP_fsetmode(b->ptr,num&BIO_FP_TEXT?'t':'b');
256 #if defined(OPENSSL_SYS_WINDOWS)
257 int fd = fileno((FILE*)ptr);
258 if (num & BIO_FP_TEXT)
259 _setmode(fd,_O_TEXT);
261 _setmode(fd,_O_BINARY);
262 #elif defined(OPENSSL_SYS_NETWARE) && defined(NETWARE_CLIB)
263 int fd = fileno((FILE*)ptr);
264 /* Under CLib there are differences in file modes
266 if (num & BIO_FP_TEXT)
269 _setmode(fd,O_BINARY);
270 #elif defined(OPENSSL_SYS_MSDOS)
271 int fd = fileno((FILE*)ptr);
272 /* Set correct text/binary mode */
273 if (num & BIO_FP_TEXT)
274 _setmode(fd,_O_TEXT);
275 /* Dangerous to set stdin/stdout to raw (unless redirected) */
278 if (fd == STDIN_FILENO || fd == STDOUT_FILENO)
281 _setmode(fd,_O_BINARY);
284 _setmode(fd,_O_BINARY);
286 #elif defined(OPENSSL_SYS_OS2)
287 int fd = fileno((FILE*)ptr);
288 if (num & BIO_FP_TEXT)
291 setmode(fd, O_BINARY);
295 case BIO_C_SET_FILENAME:
297 b->shutdown=(int)num&BIO_CLOSE;
298 if (num & BIO_FP_APPEND)
300 if (num & BIO_FP_READ)
301 BUF_strlcpy(p,"a+",sizeof p);
302 else BUF_strlcpy(p,"a",sizeof p);
304 else if ((num & BIO_FP_READ) && (num & BIO_FP_WRITE))
305 BUF_strlcpy(p,"r+",sizeof p);
306 else if (num & BIO_FP_WRITE)
307 BUF_strlcpy(p,"w",sizeof p);
308 else if (num & BIO_FP_READ)
309 BUF_strlcpy(p,"r",sizeof p);
312 BIOerr(BIO_F_FILE_CTRL,BIO_R_BAD_FOPEN_MODE);
316 #if defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_OS2) || defined(OPENSSL_SYS_WIN32_CYGWIN)
317 if (!(num & BIO_FP_TEXT))
322 #if defined(OPENSSL_SYS_NETWARE)
323 if (!(num & BIO_FP_TEXT))
331 SYSerr(SYS_F_FOPEN,get_last_sys_error());
332 ERR_add_error_data(5,"fopen('",ptr,"','",p,"')");
333 BIOerr(BIO_F_FILE_CTRL,ERR_R_SYS_LIB);
339 BIO_clear_flags(b,BIO_FLAGS_UPLINK); /* we did fopen -> we disengage UPLINK */
341 case BIO_C_GET_FILE_PTR:
342 /* the ptr parameter is actually a FILE ** in this case. */
349 case BIO_CTRL_GET_CLOSE:
350 ret=(long)b->shutdown;
352 case BIO_CTRL_SET_CLOSE:
353 b->shutdown=(int)num;
356 if (b->flags&BIO_FLAGS_UPLINK)
359 fflush((FILE *)b->ptr);
365 case BIO_CTRL_WPENDING:
366 case BIO_CTRL_PENDING:
376 static int MS_CALLBACK file_gets(BIO *bp, char *buf, int size)
381 fgets(buf,size,(FILE *)bp->ptr);
387 static int MS_CALLBACK file_puts(BIO *bp, const char *str)
392 ret=file_write(bp,str,n);
396 #endif /* OPENSSL_NO_STDIO */
398 #endif /* HEADER_BSS_FILE_C */