GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: lib/libcrypto/bio/bss_file.c Lines: 79 104 76.0 %
Date: 2017-11-13 Branches: 34 63 54.0 %

Line Branch Exec Source
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/* $OpenBSD: bss_file.c,v 1.32 2017/01/29 17:49:22 beck Exp $ */
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/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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 * All rights reserved.
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 *
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 * This package is an SSL implementation written
6
 * by Eric Young (eay@cryptsoft.com).
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 * 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
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 * the following conditions are aheared to.  The following conditions
11
 * apply to all code found in this distribution, be it the RC4, RSA,
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 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
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 * included with this distribution is covered by the same copyright terms
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 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
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 *
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 * Copyright remains Eric Young's, and as such any Copyright notices in
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 * the code are not to be removed.
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 * If this package is used in a product, Eric Young should be given attribution
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 * as the author of the parts of the library used.
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 * This can be in the form of a textual message at program startup or
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 * in documentation (online or textual) provided with the package.
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 *
23
 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 * 1. Redistributions of source code must retain the copyright
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 *    notice, this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in the
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 *    documentation and/or other materials provided with the distribution.
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 * 3. All advertising materials mentioning features or use of this software
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 *    must display the following acknowledgement:
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 *    "This product includes cryptographic software written by
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 *     Eric Young (eay@cryptsoft.com)"
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 *    The word 'cryptographic' can be left out if the rouines from the library
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 *    being used are not cryptographic related :-).
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 * 4. If you include any Windows specific code (or a derivative thereof) from
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 *    the apps directory (application code) you must include an acknowledgement:
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 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
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 *
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 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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 * SUCH DAMAGE.
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 *
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 * The licence and distribution terms for any publically available version or
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 * derivative of this code cannot be changed.  i.e. this code cannot simply be
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 * copied and put under another distribution licence
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 * [including the GNU Public Licence.]
57
 */
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59
/*
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 * 03-Dec-1997	rdenny@dc3.com  Fix bug preventing use of stdin/stdout
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 *		with binary data (e.g. asn1parse -inform DER < xxx) under
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 *		Windows
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 */
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65
#ifndef HEADER_BSS_FILE_C
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#define HEADER_BSS_FILE_C
67
68
#if defined(__linux) || defined(__sun) || defined(__hpux)
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/* Following definition aliases fopen to fopen64 on above mentioned
70
 * platforms. This makes it possible to open and sequentially access
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 * files larger than 2GB from 32-bit application. It does not allow to
72
 * traverse them beyond 2GB with fseek/ftell, but on the other hand *no*
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 * 32-bit platform permits that, not with fseek/ftell. Not to mention
74
 * that breaking 2GB limit for seeking would require surgery to *our*
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 * API. But sequential access suffices for practical cases when you
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 * can run into large files, such as fingerprinting, so we can let API
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 * alone. For reference, the list of 32-bit platforms which allow for
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 * sequential access of large files without extra "magic" comprise *BSD,
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 * Darwin, IRIX...
80
 */
81
#ifndef _FILE_OFFSET_BITS
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#define _FILE_OFFSET_BITS 64
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#endif
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#endif
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86
#include <errno.h>
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#include <stdio.h>
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#include <string.h>
89
90
#include <openssl/bio.h>
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#include <openssl/err.h>
92
93
static int file_write(BIO *h, const char *buf, int num);
94
static int file_read(BIO *h, char *buf, int size);
95
static int file_puts(BIO *h, const char *str);
96
static int file_gets(BIO *h, char *str, int size);
97
static long file_ctrl(BIO *h, int cmd, long arg1, void *arg2);
98
static int file_new(BIO *h);
99
static int file_free(BIO *data);
100
101
static BIO_METHOD methods_filep = {
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	.type = BIO_TYPE_FILE,
103
	.name = "FILE pointer",
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	.bwrite = file_write,
105
	.bread = file_read,
106
	.bputs = file_puts,
107
	.bgets = file_gets,
108
	.ctrl = file_ctrl,
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	.create = file_new,
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	.destroy = file_free
111
};
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113
BIO *
114
BIO_new_file(const char *filename, const char *mode)
115
{
116
	BIO  *ret;
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	FILE *file = NULL;
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119
3812
	file = fopen(filename, mode);
120
121
1906
	if (file == NULL) {
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2
		SYSerror(errno);
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2
		ERR_asprintf_error_data("fopen('%s', '%s')", filename, mode);
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2
		if (errno == ENOENT)
125
2
			BIOerror(BIO_R_NO_SUCH_FILE);
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		else
127
			BIOerror(ERR_R_SYS_LIB);
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2
		return (NULL);
129
	}
130
1904
	if ((ret = BIO_new(BIO_s_file())) == NULL) {
131
		fclose(file);
132
		return (NULL);
133
	}
134
135
1904
	BIO_set_fp(ret, file, BIO_CLOSE);
136
1904
	return (ret);
137
1906
}
138
139
BIO *
140
BIO_new_fp(FILE *stream, int close_flag)
141
{
142
	BIO *ret;
143
144
3636
	if ((ret = BIO_new(BIO_s_file())) == NULL)
145
		return (NULL);
146
147
1818
	BIO_set_fp(ret, stream, close_flag);
148
1818
	return (ret);
149
1818
}
150
151
BIO_METHOD *
152
BIO_s_file(void)
153
{
154
13998
	return (&methods_filep);
155
}
156
157
static int
158
file_new(BIO *bi)
159
{
160
13998
	bi->init = 0;
161
6999
	bi->num = 0;
162
6999
	bi->ptr = NULL;
163
6999
	bi->flags=0;
164
6999
	return (1);
165
}
166
167
static int
168
file_free(BIO *a)
169
{
170
27918
	if (a == NULL)
171
		return (0);
172
13959
	if (a->shutdown) {
173

14643
		if ((a->init) && (a->ptr != NULL)) {
174
3821
			fclose (a->ptr);
175
3821
			a->ptr = NULL;
176
3821
			a->flags = 0;
177
3821
		}
178
10822
		a->init = 0;
179
10822
	}
180
13959
	return (1);
181
13959
}
182
183
static int
184
file_read(BIO *b, char *out, int outl)
185
{
186
	int ret = 0;
187
188
7308
	if (b->init && out != NULL) {
189
3654
		ret = fread(out, 1, outl, (FILE *)b->ptr);
190


5114
		if (ret == 0 && ferror((FILE *)b->ptr)) {
191
			SYSerror(errno);
192
			BIOerror(ERR_R_SYS_LIB);
193
			ret = -1;
194
		}
195
	}
196
3654
	return (ret);
197
}
198
199
static int
200
file_write(BIO *b, const char *in, int inl)
201
{
202
	int ret = 0;
203
204
5211104
	if (b->init && in != NULL)
205
2605552
		ret = fwrite(in, 1, inl, (FILE *)b->ptr);
206
2605552
	return (ret);
207
}
208
209
static long
210
file_ctrl(BIO *b, int cmd, long num, void *ptr)
211
{
212
	long ret = 1;
213
68882
	FILE *fp = (FILE *)b->ptr;
214
	FILE **fpp;
215
34441
	char p[4];
216
217



34441
	switch (cmd) {
218
	case BIO_C_FILE_SEEK:
219
	case BIO_CTRL_RESET:
220
90
		ret = (long)fseek(fp, num, 0);
221
90
		break;
222
	case BIO_CTRL_EOF:
223
		ret = (long)feof(fp);
224
		break;
225
	case BIO_C_FILE_TELL:
226
	case BIO_CTRL_INFO:
227
		ret = ftell(fp);
228
		break;
229
	case BIO_C_SET_FILE_PTR:
230
5062
		file_free(b);
231
5062
		b->shutdown = (int)num&BIO_CLOSE;
232
5062
		b->ptr = ptr;
233
5062
		b->init = 1;
234
5062
		break;
235
	case BIO_C_SET_FILENAME:
236
1907
		file_free(b);
237
1907
		b->shutdown = (int)num&BIO_CLOSE;
238
1907
		if (num & BIO_FP_APPEND) {
239
			if (num & BIO_FP_READ)
240
				strlcpy(p, "a+", sizeof p);
241
			else	strlcpy(p, "a", sizeof p);
242

3112
		} else if ((num & BIO_FP_READ) && (num & BIO_FP_WRITE))
243
			strlcpy(p, "r+", sizeof p);
244
1907
		else if (num & BIO_FP_WRITE)
245
702
			strlcpy(p, "w", sizeof p);
246
1205
		else if (num & BIO_FP_READ)
247
1205
			strlcpy(p, "r", sizeof p);
248
		else {
249
			BIOerror(BIO_R_BAD_FOPEN_MODE);
250
			ret = 0;
251
			break;
252
		}
253
1907
		fp = fopen(ptr, p);
254
1907
		if (fp == NULL) {
255
2
			SYSerror(errno);
256
2
			ERR_asprintf_error_data("fopen('%s', '%s')", ptr, p);
257
2
			BIOerror(ERR_R_SYS_LIB);
258
			ret = 0;
259
2
			break;
260
		}
261
1905
		b->ptr = fp;
262
1905
		b->init = 1;
263
1905
		break;
264
	case BIO_C_GET_FILE_PTR:
265
		/* the ptr parameter is actually a FILE ** in this case. */
266
		if (ptr != NULL) {
267
			fpp = (FILE **)ptr;
268
			*fpp = (FILE *)b->ptr;
269
		}
270
		break;
271
	case BIO_CTRL_GET_CLOSE:
272
		ret = (long)b->shutdown;
273
		break;
274
	case BIO_CTRL_SET_CLOSE:
275
		b->shutdown = (int)num;
276
		break;
277
	case BIO_CTRL_FLUSH:
278
26244
		fflush((FILE *)b->ptr);
279
26244
		break;
280
	case BIO_CTRL_DUP:
281
		ret = 1;
282
		break;
283
284
	case BIO_CTRL_WPENDING:
285
	case BIO_CTRL_PENDING:
286
	case BIO_CTRL_PUSH:
287
	case BIO_CTRL_POP:
288
	default:
289
		ret = 0;
290
1138
		break;
291
	}
292
34441
	return (ret);
293
34441
}
294
295
static int
296
file_gets(BIO *bp, char *buf, int size)
297
{
298
	int ret = 0;
299
300
1075302
	buf[0] = '\0';
301
537651
	if (!fgets(buf, size,(FILE *)bp->ptr))
302
		goto err;
303
535801
	if (buf[0] != '\0')
304
535801
		ret = strlen(buf);
305
err:
306
537651
	return (ret);
307
}
308
309
static int
310
file_puts(BIO *bp, const char *str)
311
{
312
	int n, ret;
313
314
126544
	n = strlen(str);
315
63272
	ret = file_write(bp, str, n);
316
63272
	return (ret);
317
}
318
319
320
#endif /* HEADER_BSS_FILE_C */