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;
216 #if defined(OPENSSL_SYS_WINDOWS)
217 if (num & BIO_FP_TEXT)
218 _setmode(fd,_O_TEXT);
220 _setmode(fd,_O_BINARY);
221 #elif defined(OPENSSL_SYS_MSDOS)
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) */
230 if (fd == STDIN_FILENO || fd == STDOUT_FILENO)
233 _setmode(fd,_O_BINARY);
236 _setmode(fd,_O_BINARY);
239 #elif defined(OPENSSL_SYS_OS2)
240 if (num & BIO_FP_TEXT)
241 setmode(fileno((FILE *)ptr), O_TEXT);
243 setmode(fileno((FILE *)ptr), O_BINARY);
246 case BIO_C_SET_FILENAME:
248 b->shutdown=(int)num&BIO_CLOSE;
249 if (num & BIO_FP_APPEND)
251 if (num & BIO_FP_READ)
255 else if ((num & BIO_FP_READ) && (num & BIO_FP_WRITE))
257 else if (num & BIO_FP_WRITE)
259 else if (num & BIO_FP_READ)
263 BIOerr(BIO_F_FILE_CTRL,BIO_R_BAD_FOPEN_MODE);
267 #if defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_OS2)
268 if (!(num & BIO_FP_TEXT))
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);
285 case BIO_C_GET_FILE_PTR:
286 /* the ptr parameter is actually a FILE ** in this case. */
293 case BIO_CTRL_GET_CLOSE:
294 ret=(long)b->shutdown;
296 case BIO_CTRL_SET_CLOSE:
297 b->shutdown=(int)num;
300 fflush((FILE *)b->ptr);
306 case BIO_CTRL_WPENDING:
307 case BIO_CTRL_PENDING:
317 static int MS_CALLBACK file_gets(BIO *bp, char *buf, int size)
322 fgets(buf,size,(FILE *)bp->ptr);
328 static int MS_CALLBACK file_puts(BIO *bp, const char *str)
333 ret=file_write(bp,str,n);
337 #endif /* OPENSSL_NO_STDIO */
339 #endif /* HEADER_BSS_FILE_C */