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d02b48c6 | 1 | /* crypto/bio/bss_file.c */ |
58964a49 | 2 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
d02b48c6 RE |
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 | ||
58964a49 RE |
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 | ||
d02b48c6 RE |
68 | #include <stdio.h> |
69 | #include <errno.h> | |
70 | #include "cryptlib.h" | |
ea1b02db | 71 | #include "bio_lcl.h" |
ec577822 | 72 | #include <openssl/err.h> |
d02b48c6 | 73 | |
cf1b7d96 | 74 | #if !defined(OPENSSL_NO_STDIO) |
58964a49 | 75 | |
0e1c0612 UM |
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); | |
d02b48c6 RE |
81 | static int MS_CALLBACK file_new(BIO *h); |
82 | static int MS_CALLBACK file_free(BIO *data); | |
d02b48c6 RE |
83 | static BIO_METHOD methods_filep= |
84 | { | |
58964a49 RE |
85 | BIO_TYPE_FILE, |
86 | "FILE pointer", | |
d02b48c6 RE |
87 | file_write, |
88 | file_read, | |
89 | file_puts, | |
90 | file_gets, | |
91 | file_ctrl, | |
92 | file_new, | |
93 | file_free, | |
d3442bc7 | 94 | NULL, |
d02b48c6 RE |
95 | }; |
96 | ||
72fbe87d | 97 | BIO *BIO_new_file(const char *filename, const char *mode) |
d02b48c6 RE |
98 | { |
99 | BIO *ret; | |
100 | FILE *file; | |
101 | ||
102 | if ((file=fopen(filename,mode)) == NULL) | |
103 | { | |
58964a49 RE |
104 | SYSerr(SYS_F_FOPEN,get_last_sys_error()); |
105 | ERR_add_error_data(5,"fopen('",filename,"','",mode,"')"); | |
a14e2d9d | 106 | if (errno == ENOENT) |
0fc5cf08 BL |
107 | BIOerr(BIO_F_BIO_NEW_FILE,BIO_R_NO_SUCH_FILE); |
108 | else | |
109 | BIOerr(BIO_F_BIO_NEW_FILE,ERR_R_SYS_LIB); | |
d02b48c6 RE |
110 | return(NULL); |
111 | } | |
58964a49 | 112 | if ((ret=BIO_new(BIO_s_file_internal())) == NULL) |
d02b48c6 | 113 | return(NULL); |
d02b48c6 | 114 | |
ea1b02db | 115 | BIO_clear_flags(ret,BIO_FLAGS_UPLINK); /* we did fopen -> we disengage UPLINK */ |
d02b48c6 RE |
116 | BIO_set_fp(ret,file,BIO_CLOSE); |
117 | return(ret); | |
118 | } | |
119 | ||
6b691a5c | 120 | BIO *BIO_new_fp(FILE *stream, int close_flag) |
d02b48c6 RE |
121 | { |
122 | BIO *ret; | |
123 | ||
124 | if ((ret=BIO_new(BIO_s_file())) == NULL) | |
125 | return(NULL); | |
d02b48c6 | 126 | |
ea1b02db | 127 | BIO_set_flags(ret,BIO_FLAGS_UPLINK); /* redundant, left for documentation puposes */ |
d02b48c6 RE |
128 | BIO_set_fp(ret,stream,close_flag); |
129 | return(ret); | |
130 | } | |
d02b48c6 | 131 | |
6b691a5c | 132 | BIO_METHOD *BIO_s_file(void) |
d02b48c6 RE |
133 | { |
134 | return(&methods_filep); | |
135 | } | |
136 | ||
6b691a5c | 137 | static int MS_CALLBACK file_new(BIO *bi) |
d02b48c6 RE |
138 | { |
139 | bi->init=0; | |
140 | bi->num=0; | |
141 | bi->ptr=NULL; | |
ea1b02db | 142 | bi->flags=BIO_FLAGS_UPLINK; /* default to UPLINK */ |
d02b48c6 RE |
143 | return(1); |
144 | } | |
145 | ||
6b691a5c | 146 | static int MS_CALLBACK file_free(BIO *a) |
d02b48c6 RE |
147 | { |
148 | if (a == NULL) return(0); | |
149 | if (a->shutdown) | |
150 | { | |
151 | if ((a->init) && (a->ptr != NULL)) | |
152 | { | |
ea1b02db AP |
153 | if (a->flags&BIO_FLAGS_UPLINK) |
154 | UP_fclose (a->ptr); | |
155 | else | |
156 | fclose (a->ptr); | |
d02b48c6 | 157 | a->ptr=NULL; |
ea1b02db | 158 | a->flags=BIO_FLAGS_UPLINK; |
d02b48c6 RE |
159 | } |
160 | a->init=0; | |
161 | } | |
162 | return(1); | |
163 | } | |
164 | ||
6b691a5c | 165 | static int MS_CALLBACK file_read(BIO *b, char *out, int outl) |
d02b48c6 RE |
166 | { |
167 | int ret=0; | |
168 | ||
169 | if (b->init && (out != NULL)) | |
170 | { | |
ea1b02db AP |
171 | if (b->flags&BIO_FLAGS_UPLINK) |
172 | ret=UP_fread(out,1,(int)outl,b->ptr); | |
173 | else | |
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)) | |
d15711ef BL |
176 | { |
177 | SYSerr(SYS_F_FREAD,get_last_sys_error()); | |
178 | BIOerr(BIO_F_FILE_READ,ERR_R_SYS_LIB); | |
179 | ret=-1; | |
180 | } | |
d02b48c6 RE |
181 | } |
182 | return(ret); | |
183 | } | |
184 | ||
0e1c0612 | 185 | static int MS_CALLBACK file_write(BIO *b, const char *in, int inl) |
d02b48c6 RE |
186 | { |
187 | int ret=0; | |
188 | ||
189 | if (b->init && (in != NULL)) | |
190 | { | |
ea1b02db AP |
191 | if (b->flags&BIO_FLAGS_UPLINK) |
192 | ret=UP_fwrite(in,(int)inl,1,b->ptr); | |
193 | else | |
194 | ret=fwrite(in,(int)inl,1,(FILE *)b->ptr); | |
195 | if (ret) | |
d02b48c6 RE |
196 | ret=inl; |
197 | /* ret=fwrite(in,1,(int)inl,(FILE *)b->ptr); */ | |
657e60fa | 198 | /* according to Tim Hudson <tjh@cryptsoft.com>, the commented |
d02b48c6 RE |
199 | * out version above can cause 'inl' write calls under |
200 | * some stupid stdio implementations (VMS) */ | |
201 | } | |
202 | return(ret); | |
203 | } | |
204 | ||
0e1c0612 | 205 | static long MS_CALLBACK file_ctrl(BIO *b, int cmd, long num, void *ptr) |
d02b48c6 RE |
206 | { |
207 | long ret=1; | |
208 | FILE *fp=(FILE *)b->ptr; | |
209 | FILE **fpp; | |
210 | char p[4]; | |
211 | ||
212 | switch (cmd) | |
213 | { | |
dfeab068 | 214 | case BIO_C_FILE_SEEK: |
d02b48c6 | 215 | case BIO_CTRL_RESET: |
ea1b02db AP |
216 | if (b->flags&BIO_FLAGS_UPLINK) |
217 | ret=(long)UP_fseek(b->ptr,num,0); | |
218 | else | |
219 | ret=(long)fseek(fp,num,0); | |
d02b48c6 RE |
220 | break; |
221 | case BIO_CTRL_EOF: | |
ea1b02db AP |
222 | if (b->flags&BIO_FLAGS_UPLINK) |
223 | ret=(long)UP_feof(fp); | |
224 | else | |
225 | ret=(long)feof(fp); | |
d02b48c6 | 226 | break; |
dfeab068 | 227 | case BIO_C_FILE_TELL: |
d02b48c6 | 228 | case BIO_CTRL_INFO: |
ea1b02db AP |
229 | if (b->flags&BIO_FLAGS_UPLINK) |
230 | ret=UP_ftell(b->ptr); | |
231 | else | |
232 | ret=ftell(fp); | |
d02b48c6 RE |
233 | break; |
234 | case BIO_C_SET_FILE_PTR: | |
235 | file_free(b); | |
79479f02 | 236 | b->shutdown=(int)num&BIO_CLOSE; |
ea1b02db | 237 | b->ptr=ptr; |
d02b48c6 | 238 | b->init=1; |
ea1b02db AP |
239 | #if BIO_FLAGS_UPLINK!=0 && defined(_IOB_ENTRIES) |
240 | /* Safety net to catch purely internal BIO_set_fp calls */ | |
241 | if ((size_t)ptr >= (size_t)stdin && | |
242 | (size_t)ptr < (size_t)(stdin+_IOB_ENTRIES)) | |
243 | BIO_clear_flags(b,BIO_FLAGS_UPLINK); | |
244 | #endif | |
245 | #ifdef UP_fsetmode | |
246 | if (b->flags&BIO_FLAGS_UPLINK) | |
247 | UP_fsetmode(b->ptr,num&BIO_FP_TEXT?'t':'b'); | |
248 | else | |
249 | #endif | |
18a63331 | 250 | { |
7f3ba942 | 251 | #if defined(OPENSSL_SYS_WINDOWS) |
e703b465 | 252 | int fd = fileno((FILE*)ptr); |
7f3ba942 RL |
253 | if (num & BIO_FP_TEXT) |
254 | _setmode(fd,_O_TEXT); | |
255 | else | |
256 | _setmode(fd,_O_BINARY); | |
4d8743f4 | 257 | #elif defined(OPENSSL_SYS_NETWARE) && defined(NETWARE_CLIB) |
e703b465 | 258 | int fd = fileno((FILE*)ptr); |
4d8743f4 RL |
259 | /* Under CLib there are differences in file modes |
260 | */ | |
261 | if (num & BIO_FP_TEXT) | |
18a63331 | 262 | _setmode(fd,O_TEXT); |
4d8743f4 | 263 | else |
18a63331 | 264 | _setmode(fd,O_BINARY); |
7f3ba942 | 265 | #elif defined(OPENSSL_SYS_MSDOS) |
e703b465 | 266 | int fd = fileno((FILE*)ptr); |
58964a49 RE |
267 | /* Set correct text/binary mode */ |
268 | if (num & BIO_FP_TEXT) | |
7f3ba942 RL |
269 | _setmode(fd,_O_TEXT); |
270 | /* Dangerous to set stdin/stdout to raw (unless redirected) */ | |
58964a49 | 271 | else |
7f3ba942 RL |
272 | { |
273 | if (fd == STDIN_FILENO || fd == STDOUT_FILENO) | |
274 | { | |
275 | if (isatty(fd) <= 0) | |
276 | _setmode(fd,_O_BINARY); | |
277 | } | |
278 | else | |
279 | _setmode(fd,_O_BINARY); | |
280 | } | |
dc01b6b1 | 281 | #elif defined(OPENSSL_SYS_OS2) |
e703b465 | 282 | int fd = fileno((FILE*)ptr); |
dc01b6b1 | 283 | if (num & BIO_FP_TEXT) |
18a63331 | 284 | setmode(fd, O_TEXT); |
dc01b6b1 | 285 | else |
18a63331 | 286 | setmode(fd, O_BINARY); |
58964a49 | 287 | #endif |
18a63331 | 288 | } |
d02b48c6 RE |
289 | break; |
290 | case BIO_C_SET_FILENAME: | |
291 | file_free(b); | |
292 | b->shutdown=(int)num&BIO_CLOSE; | |
293 | if (num & BIO_FP_APPEND) | |
294 | { | |
295 | if (num & BIO_FP_READ) | |
d420ac2c RL |
296 | BUF_strlcpy(p,"a+",sizeof p); |
297 | else BUF_strlcpy(p,"a",sizeof p); | |
d02b48c6 RE |
298 | } |
299 | else if ((num & BIO_FP_READ) && (num & BIO_FP_WRITE)) | |
d420ac2c | 300 | BUF_strlcpy(p,"r+",sizeof p); |
d02b48c6 | 301 | else if (num & BIO_FP_WRITE) |
d420ac2c | 302 | BUF_strlcpy(p,"w",sizeof p); |
d02b48c6 | 303 | else if (num & BIO_FP_READ) |
d420ac2c | 304 | BUF_strlcpy(p,"r",sizeof p); |
d02b48c6 RE |
305 | else |
306 | { | |
307 | BIOerr(BIO_F_FILE_CTRL,BIO_R_BAD_FOPEN_MODE); | |
308 | ret=0; | |
309 | break; | |
310 | } | |
de421076 | 311 | #if defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_OS2) || defined(OPENSSL_SYS_WIN32_CYGWIN) |
d02b48c6 RE |
312 | if (!(num & BIO_FP_TEXT)) |
313 | strcat(p,"b"); | |
314 | else | |
315 | strcat(p,"t"); | |
316 | #endif | |
4d8743f4 RL |
317 | #if defined(OPENSSL_SYS_NETWARE) |
318 | if (!(num & BIO_FP_TEXT)) | |
319 | strcat(p,"b"); | |
320 | else | |
321 | strcat(p,"t"); | |
322 | #endif | |
ea1b02db | 323 | fp=fopen(ptr,p); |
d02b48c6 RE |
324 | if (fp == NULL) |
325 | { | |
58964a49 RE |
326 | SYSerr(SYS_F_FOPEN,get_last_sys_error()); |
327 | ERR_add_error_data(5,"fopen('",ptr,"','",p,"')"); | |
d02b48c6 RE |
328 | BIOerr(BIO_F_FILE_CTRL,ERR_R_SYS_LIB); |
329 | ret=0; | |
330 | break; | |
331 | } | |
ea1b02db | 332 | b->ptr=fp; |
d02b48c6 | 333 | b->init=1; |
ea1b02db | 334 | BIO_clear_flags(b,BIO_FLAGS_UPLINK); /* we did fopen -> we disengage UPLINK */ |
d02b48c6 RE |
335 | break; |
336 | case BIO_C_GET_FILE_PTR: | |
337 | /* the ptr parameter is actually a FILE ** in this case. */ | |
338 | if (ptr != NULL) | |
339 | { | |
340 | fpp=(FILE **)ptr; | |
341 | *fpp=(FILE *)b->ptr; | |
342 | } | |
343 | break; | |
344 | case BIO_CTRL_GET_CLOSE: | |
345 | ret=(long)b->shutdown; | |
346 | break; | |
347 | case BIO_CTRL_SET_CLOSE: | |
348 | b->shutdown=(int)num; | |
349 | break; | |
350 | case BIO_CTRL_FLUSH: | |
ea1b02db AP |
351 | if (b->flags&BIO_FLAGS_UPLINK) |
352 | UP_fflush(b->ptr); | |
353 | else | |
354 | fflush((FILE *)b->ptr); | |
d02b48c6 RE |
355 | break; |
356 | case BIO_CTRL_DUP: | |
357 | ret=1; | |
358 | break; | |
359 | ||
360 | case BIO_CTRL_WPENDING: | |
361 | case BIO_CTRL_PENDING: | |
362 | case BIO_CTRL_PUSH: | |
363 | case BIO_CTRL_POP: | |
364 | default: | |
365 | ret=0; | |
366 | break; | |
367 | } | |
368 | return(ret); | |
369 | } | |
370 | ||
6b691a5c | 371 | static int MS_CALLBACK file_gets(BIO *bp, char *buf, int size) |
d02b48c6 RE |
372 | { |
373 | int ret=0; | |
374 | ||
375 | buf[0]='\0'; | |
376 | fgets(buf,size,(FILE *)bp->ptr); | |
377 | if (buf[0] != '\0') | |
378 | ret=strlen(buf); | |
379 | return(ret); | |
380 | } | |
381 | ||
0e1c0612 | 382 | static int MS_CALLBACK file_puts(BIO *bp, const char *str) |
d02b48c6 RE |
383 | { |
384 | int n,ret; | |
385 | ||
386 | n=strlen(str); | |
387 | ret=file_write(bp,str,n); | |
388 | return(ret); | |
389 | } | |
390 | ||
cf1b7d96 | 391 | #endif /* OPENSSL_NO_STDIO */ |
58964a49 RE |
392 | |
393 | #endif /* HEADER_BSS_FILE_C */ | |
394 | ||
395 |