GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: lib/libcrypto/ui/ui_openssl.c Lines: 0 101 0.0 %
Date: 2017-11-07 Branches: 0 82 0.0 %

Line Branch Exec Source
1
/* $OpenBSD: ui_openssl.c,v 1.25 2015/09/10 15:56:26 jsing Exp $ */
2
/* Written by Richard Levitte (richard@levitte.org) and others
3
 * for the OpenSSL project 2001.
4
 */
5
/* ====================================================================
6
 * Copyright (c) 2001 The OpenSSL Project.  All rights reserved.
7
 *
8
 * Redistribution and use in source and binary forms, with or without
9
 * modification, are permitted provided that the following conditions
10
 * are met:
11
 *
12
 * 1. Redistributions of source code must retain the above copyright
13
 *    notice, this list of conditions and the following disclaimer.
14
 *
15
 * 2. Redistributions in binary form must reproduce the above copyright
16
 *    notice, this list of conditions and the following disclaimer in
17
 *    the documentation and/or other materials provided with the
18
 *    distribution.
19
 *
20
 * 3. All advertising materials mentioning features or use of this
21
 *    software must display the following acknowledgment:
22
 *    "This product includes software developed by the OpenSSL Project
23
 *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
24
 *
25
 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26
 *    endorse or promote products derived from this software without
27
 *    prior written permission. For written permission, please contact
28
 *    openssl-core@openssl.org.
29
 *
30
 * 5. Products derived from this software may not be called "OpenSSL"
31
 *    nor may "OpenSSL" appear in their names without prior written
32
 *    permission of the OpenSSL Project.
33
 *
34
 * 6. Redistributions of any form whatsoever must retain the following
35
 *    acknowledgment:
36
 *    "This product includes software developed by the OpenSSL Project
37
 *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
38
 *
39
 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40
 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
43
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50
 * OF THE POSSIBILITY OF SUCH DAMAGE.
51
 * ====================================================================
52
 *
53
 * This product includes cryptographic software written by Eric Young
54
 * (eay@cryptsoft.com).  This product includes software written by Tim
55
 * Hudson (tjh@cryptsoft.com).
56
 *
57
 */
58
59
/* The lowest level part of this file was previously in crypto/des/read_pwd.c,
60
 * Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
61
 * All rights reserved.
62
 *
63
 * This package is an SSL implementation written
64
 * by Eric Young (eay@cryptsoft.com).
65
 * The implementation was written so as to conform with Netscapes SSL.
66
 *
67
 * This library is free for commercial and non-commercial use as long as
68
 * the following conditions are aheared to.  The following conditions
69
 * apply to all code found in this distribution, be it the RC4, RSA,
70
 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
71
 * included with this distribution is covered by the same copyright terms
72
 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
73
 *
74
 * Copyright remains Eric Young's, and as such any Copyright notices in
75
 * the code are not to be removed.
76
 * If this package is used in a product, Eric Young should be given attribution
77
 * as the author of the parts of the library used.
78
 * This can be in the form of a textual message at program startup or
79
 * in documentation (online or textual) provided with the package.
80
 *
81
 * Redistribution and use in source and binary forms, with or without
82
 * modification, are permitted provided that the following conditions
83
 * are met:
84
 * 1. Redistributions of source code must retain the copyright
85
 *    notice, this list of conditions and the following disclaimer.
86
 * 2. Redistributions in binary form must reproduce the above copyright
87
 *    notice, this list of conditions and the following disclaimer in the
88
 *    documentation and/or other materials provided with the distribution.
89
 * 3. All advertising materials mentioning features or use of this software
90
 *    must display the following acknowledgement:
91
 *    "This product includes cryptographic software written by
92
 *     Eric Young (eay@cryptsoft.com)"
93
 *    The word 'cryptographic' can be left out if the rouines from the library
94
 *    being used are not cryptographic related :-).
95
 * 4. If you include any Windows specific code (or a derivative thereof) from
96
 *    the apps directory (application code) you must include an acknowledgement:
97
 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
98
 *
99
 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
100
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
101
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
102
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
103
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
104
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
105
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
106
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
107
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
108
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
109
 * SUCH DAMAGE.
110
 *
111
 * The licence and distribution terms for any publically available version or
112
 * derivative of this code cannot be changed.  i.e. this code cannot simply be
113
 * copied and put under another distribution licence
114
 * [including the GNU Public Licence.]
115
 */
116
117
#include <sys/ioctl.h>
118
119
#include <openssl/opensslconf.h>
120
121
#include <errno.h>
122
#include <signal.h>
123
#include <stdio.h>
124
#include <string.h>
125
#include <termios.h>
126
#include <unistd.h>
127
128
#include "ui_locl.h"
129
130
#ifndef NX509_SIG
131
#define NX509_SIG 32
132
#endif
133
134
/* Define globals.  They are protected by a lock */
135
static struct sigaction savsig[NX509_SIG];
136
137
static struct termios tty_orig;
138
static FILE *tty_in, *tty_out;
139
static int is_a_tty;
140
141
/* Declare static functions */
142
static int read_till_nl(FILE *);
143
static void recsig(int);
144
static void pushsig(void);
145
static void popsig(void);
146
static int read_string_inner(UI *ui, UI_STRING *uis, int echo, int strip_nl);
147
148
static int read_string(UI *ui, UI_STRING *uis);
149
static int write_string(UI *ui, UI_STRING *uis);
150
151
static int open_console(UI *ui);
152
static int echo_console(UI *ui);
153
static int noecho_console(UI *ui);
154
static int close_console(UI *ui);
155
156
static UI_METHOD ui_openssl = {
157
	.name = "OpenSSL default user interface",
158
	.ui_open_session = open_console,
159
	.ui_write_string = write_string,
160
	.ui_read_string = read_string,
161
	.ui_close_session = close_console,
162
};
163
164
/* The method with all the built-in thingies */
165
UI_METHOD *
166
UI_OpenSSL(void)
167
{
168
	return &ui_openssl;
169
}
170
171
/* The following function makes sure that info and error strings are printed
172
   before any prompt. */
173
static int
174
write_string(UI *ui, UI_STRING *uis)
175
{
176
	switch (UI_get_string_type(uis)) {
177
	case UIT_ERROR:
178
	case UIT_INFO:
179
		fputs(UI_get0_output_string(uis), tty_out);
180
		fflush(tty_out);
181
		break;
182
	default:
183
		break;
184
	}
185
	return 1;
186
}
187
188
static int
189
read_string(UI *ui, UI_STRING *uis)
190
{
191
	int ok = 0;
192
193
	switch (UI_get_string_type(uis)) {
194
	case UIT_BOOLEAN:
195
		fputs(UI_get0_output_string(uis), tty_out);
196
		fputs(UI_get0_action_string(uis), tty_out);
197
		fflush(tty_out);
198
		return read_string_inner(ui, uis,
199
		    UI_get_input_flags(uis) & UI_INPUT_FLAG_ECHO, 0);
200
	case UIT_PROMPT:
201
		fputs(UI_get0_output_string(uis), tty_out);
202
		fflush(tty_out);
203
		return read_string_inner(ui, uis,
204
		    UI_get_input_flags(uis) & UI_INPUT_FLAG_ECHO, 1);
205
	case UIT_VERIFY:
206
		fprintf(tty_out, "Verifying - %s",
207
		    UI_get0_output_string(uis));
208
		fflush(tty_out);
209
		if ((ok = read_string_inner(ui, uis, UI_get_input_flags(uis) &
210
		    UI_INPUT_FLAG_ECHO, 1)) <= 0)
211
			return ok;
212
		if (strcmp(UI_get0_result_string(uis),
213
		    UI_get0_test_string(uis)) != 0) {
214
			fprintf(tty_out, "Verify failure\n");
215
			fflush(tty_out);
216
			return 0;
217
		}
218
		break;
219
	default:
220
		break;
221
	}
222
	return 1;
223
}
224
225
226
/* Internal functions to read a string without echoing */
227
static int
228
read_till_nl(FILE *in)
229
{
230
#define SIZE 4
231
	char buf[SIZE + 1];
232
233
	do {
234
		if (!fgets(buf, SIZE, in))
235
			return 0;
236
	} while (strchr(buf, '\n') == NULL);
237
	return 1;
238
}
239
240
static volatile sig_atomic_t intr_signal;
241
242
static int
243
read_string_inner(UI *ui, UI_STRING *uis, int echo, int strip_nl)
244
{
245
	static int ps;
246
	int ok;
247
	char result[BUFSIZ];
248
	int maxsize = BUFSIZ - 1;
249
	char *p;
250
251
	intr_signal = 0;
252
	ok = 0;
253
	ps = 0;
254
255
	pushsig();
256
	ps = 1;
257
258
	if (!echo && !noecho_console(ui))
259
		goto error;
260
	ps = 2;
261
262
	result[0] = '\0';
263
	p = fgets(result, maxsize, tty_in);
264
	if (!p)
265
		goto error;
266
	if (feof(tty_in))
267
		goto error;
268
	if (ferror(tty_in))
269
		goto error;
270
	if ((p = strchr(result, '\n')) != NULL) {
271
		if (strip_nl)
272
			*p = '\0';
273
	} else if (!read_till_nl(tty_in))
274
		goto error;
275
	if (UI_set_result(ui, uis, result) >= 0)
276
		ok = 1;
277
278
error:
279
	if (intr_signal == SIGINT)
280
		ok = -1;
281
	if (!echo)
282
		fprintf(tty_out, "\n");
283
	if (ps >= 2 && !echo && !echo_console(ui))
284
		ok = 0;
285
286
	if (ps >= 1)
287
		popsig();
288
289
	explicit_bzero(result, BUFSIZ);
290
	return ok;
291
}
292
293
294
/* Internal functions to open, handle and close a channel to the console.  */
295
static int
296
open_console(UI *ui)
297
{
298
	CRYPTO_w_lock(CRYPTO_LOCK_UI);
299
	is_a_tty = 1;
300
301
#define DEV_TTY "/dev/tty"
302
	if ((tty_in = fopen(DEV_TTY, "r")) == NULL)
303
		tty_in = stdin;
304
	if ((tty_out = fopen(DEV_TTY, "w")) == NULL)
305
		tty_out = stderr;
306
307
	if (tcgetattr(fileno(tty_in), &tty_orig) == -1) {
308
		if (errno == ENOTTY)
309
			is_a_tty = 0;
310
		else
311
			/*
312
			 * Ariel Glenn ariel@columbia.edu reports that
313
			 * solaris can return EINVAL instead.  This should be
314
			 * ok
315
			 */
316
			if (errno == EINVAL)
317
				is_a_tty = 0;
318
		else
319
			return 0;
320
	}
321
322
	return 1;
323
}
324
325
static int
326
noecho_console(UI *ui)
327
{
328
	struct termios tty_new = tty_orig;
329
330
	tty_new.c_lflag &= ~ECHO;
331
	if (is_a_tty && (tcsetattr(fileno(tty_in), TCSANOW, &tty_new) == -1))
332
		return 0;
333
	return 1;
334
}
335
336
static int
337
echo_console(UI *ui)
338
{
339
	if (is_a_tty && (tcsetattr(fileno(tty_in), TCSANOW, &tty_orig) == -1))
340
		return 0;
341
	return 1;
342
}
343
344
static int
345
close_console(UI *ui)
346
{
347
	if (tty_in != stdin)
348
		fclose(tty_in);
349
	if (tty_out != stderr)
350
		fclose(tty_out);
351
	CRYPTO_w_unlock(CRYPTO_LOCK_UI);
352
353
	return 1;
354
}
355
356
357
/* Internal functions to handle signals and act on them */
358
static void
359
pushsig(void)
360
{
361
	int i;
362
	struct sigaction sa;
363
364
	memset(&sa, 0, sizeof sa);
365
	sa.sa_handler = recsig;
366
367
	for (i = 1; i < NX509_SIG; i++) {
368
		if (i == SIGUSR1)
369
			continue;
370
		if (i == SIGUSR2)
371
			continue;
372
		if (i == SIGKILL)	/* We can't make any action on that. */
373
			continue;
374
		sigaction(i, &sa, &savsig[i]);
375
	}
376
377
	signal(SIGWINCH, SIG_DFL);
378
}
379
380
static void
381
popsig(void)
382
{
383
	int i;
384
	for (i = 1; i < NX509_SIG; i++) {
385
		if (i == SIGUSR1)
386
			continue;
387
		if (i == SIGUSR2)
388
			continue;
389
		sigaction(i, &savsig[i], NULL);
390
	}
391
}
392
393
static void
394
recsig(int i)
395
{
396
	intr_signal = i;
397
}