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
74 #if !defined(NO_STDIO)
77 static int MS_CALLBACK file_write(BIO *h,char *buf,int num);
78 static int MS_CALLBACK file_read(BIO *h,char *buf,int size);
79 static int MS_CALLBACK file_puts(BIO *h,char *str);
80 static int MS_CALLBACK file_gets(BIO *h,char *str,int size);
81 static long MS_CALLBACK file_ctrl(BIO *h,int cmd,long arg1,char *arg2);
82 static int MS_CALLBACK file_new(BIO *h);
83 static int MS_CALLBACK file_free(BIO *data);
85 static int MS_CALLBACK file_write();
86 static int MS_CALLBACK file_read();
87 static int MS_CALLBACK file_puts();
88 static int MS_CALLBACK file_gets();
89 static long MS_CALLBACK file_ctrl();
90 static int MS_CALLBACK file_new();
91 static int MS_CALLBACK file_free();
94 static BIO_METHOD methods_filep=
107 BIO *BIO_new_file(char *filename, char *mode)
112 if ((file=fopen(filename,mode)) == NULL)
114 SYSerr(SYS_F_FOPEN,get_last_sys_error());
115 ERR_add_error_data(5,"fopen('",filename,"','",mode,"')");
116 BIOerr(BIO_F_BIO_NEW_FILE,ERR_R_SYS_LIB);
119 if ((ret=BIO_new(BIO_s_file_internal())) == NULL)
122 BIO_set_fp(ret,file,BIO_CLOSE);
126 BIO *BIO_new_fp(FILE *stream, int close_flag)
130 if ((ret=BIO_new(BIO_s_file())) == NULL)
133 BIO_set_fp(ret,stream,close_flag);
137 BIO_METHOD *BIO_s_file(void)
139 return(&methods_filep);
142 static int MS_CALLBACK file_new(BIO *bi)
150 static int MS_CALLBACK file_free(BIO *a)
152 if (a == NULL) return(0);
155 if ((a->init) && (a->ptr != NULL))
157 fclose((FILE *)a->ptr);
165 static int MS_CALLBACK file_read(BIO *b, char *out, int outl)
169 if (b->init && (out != NULL))
171 ret=fread(out,1,(int)outl,(FILE *)b->ptr);
176 static int MS_CALLBACK file_write(BIO *b, char *in, int inl)
180 if (b->init && (in != NULL))
182 if (fwrite(in,(int)inl,1,(FILE *)b->ptr))
184 /* ret=fwrite(in,1,(int)inl,(FILE *)b->ptr); */
185 /* acording to Tim Hudson <tjh@cryptsoft.com>, the commented
186 * out version above can cause 'inl' write calls under
187 * some stupid stdio implementations (VMS) */
192 static long MS_CALLBACK file_ctrl(BIO *b, int cmd, long num, char *ptr)
195 FILE *fp=(FILE *)b->ptr;
201 case BIO_C_FILE_SEEK:
203 ret=(long)fseek(fp,num,0);
208 case BIO_C_FILE_TELL:
212 case BIO_C_SET_FILE_PTR:
214 b->shutdown=(int)num;
217 #if defined(MSDOS) || defined(WINDOWS)
218 /* Set correct text/binary mode */
219 if (num & BIO_FP_TEXT)
220 _setmode(fileno((FILE *)ptr),_O_TEXT);
222 _setmode(fileno((FILE *)ptr),_O_BINARY);
225 case BIO_C_SET_FILENAME:
227 b->shutdown=(int)num&BIO_CLOSE;
228 if (num & BIO_FP_APPEND)
230 if (num & BIO_FP_READ)
234 else if ((num & BIO_FP_READ) && (num & BIO_FP_WRITE))
236 else if (num & BIO_FP_WRITE)
238 else if (num & BIO_FP_READ)
242 BIOerr(BIO_F_FILE_CTRL,BIO_R_BAD_FOPEN_MODE);
246 #if defined(MSDOS) || defined(WINDOWS)
247 if (!(num & BIO_FP_TEXT))
255 SYSerr(SYS_F_FOPEN,get_last_sys_error());
256 ERR_add_error_data(5,"fopen('",ptr,"','",p,"')");
257 BIOerr(BIO_F_FILE_CTRL,ERR_R_SYS_LIB);
264 case BIO_C_GET_FILE_PTR:
265 /* the ptr parameter is actually a FILE ** in this case. */
272 case BIO_CTRL_GET_CLOSE:
273 ret=(long)b->shutdown;
275 case BIO_CTRL_SET_CLOSE:
276 b->shutdown=(int)num;
279 fflush((FILE *)b->ptr);
285 case BIO_CTRL_WPENDING:
286 case BIO_CTRL_PENDING:
296 static int MS_CALLBACK file_gets(BIO *bp, char *buf, int size)
301 fgets(buf,size,(FILE *)bp->ptr);
307 static int MS_CALLBACK file_puts(BIO *bp, char *str)
312 ret=file_write(bp,str,n);
316 #endif /* NO_STDIO */
318 #endif /* HEADER_BSS_FILE_C */