1/*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Written By Julian ELischer
5 * Copyright julian Elischer 1993.
6 * Permission is granted to use or redistribute this file in any way as long
7 * as this notice remains. Julian Elischer does not guarantee that this file
8 * is totally correct for any given task and users of this file must
9 * accept responsibility for any damage that occurs from the application of this
10 * file.
11 *
12 * (julian@tfs.com julian@dialix.oz.au)
13 *
14 * User SCSI hooks added by Peter Dufault:
15 *
16 * Copyright (c) 1994 HD Associates
17 * (contact: dufault@hda.com)
18 * All rights reserved.
19 *
20 * Redistribution and use in source and binary forms, with or without
21 * modification, are permitted provided that the following conditions
22 * are met:
23 * 1. Redistributions of source code must retain the above copyright
24 *    notice, this list of conditions and the following disclaimer.
25 * 2. Redistributions in binary form must reproduce the above copyright
26 *    notice, this list of conditions and the following disclaimer in the
27 *    documentation and/or other materials provided with the distribution.
28 * 3. The name of HD Associates
29 *    may not be used to endorse or promote products derived from this software
30 *    without specific prior written permission.
31 *
32 * THIS SOFTWARE IS PROVIDED BY HD ASSOCIATES ``AS IS'' AND
33 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
34 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
35 * ARE DISCLAIMED.  IN NO EVENT SHALL HD ASSOCIATES BE LIABLE
36 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
37 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
38 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
39 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
40 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
41 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
42 * SUCH DAMAGE.
43 */
44/*
45 * Taken from the original scsi(8) program.
46 * from: scsi.c,v 1.17 1998/01/12 07:57:57 charnier Exp $";
47 */
48#include <sys/cdefs.h>
49__FBSDID("$FreeBSD: stable/11/sbin/camcontrol/util.c 330449 2018-03-05 07:26:05Z eadler $");
50
51#include <sys/stdint.h>
52#include <sys/types.h>
53
54#include <stdlib.h>
55#include <stdio.h>
56#include <string.h>
57
58#include <camlib.h>
59#include "camcontrol.h"
60
61int verbose;
62
63/* iget: Integer argument callback
64 */
65int
66iget(void *hook, char *name)
67{
68	struct get_hook *h = (struct get_hook *)hook;
69	int arg;
70
71	if (h->got >= h->argc)
72	{
73		fprintf(stderr, "Expecting an integer argument.\n");
74		usage(0);
75		exit(1);
76	}
77	arg = strtol(h->argv[h->got], 0, 0);
78	h->got++;
79
80	if (verbose && name && *name)
81		printf("%s: %d\n", name, arg);
82
83	return arg;
84}
85
86/* cget: char * argument callback
87 */
88char *
89cget(void *hook, char *name)
90{
91	struct get_hook *h = (struct get_hook *)hook;
92	char *arg;
93
94	if (h->got >= h->argc)
95	{
96		fprintf(stderr, "Expecting a character pointer argument.\n");
97		usage(0);
98		exit(1);
99	}
100	arg = h->argv[h->got];
101	h->got++;
102
103	if (verbose && name)
104		printf("cget: %s: %s", name, arg);
105
106	return arg;
107}
108
109/* arg_put: "put argument" callback
110 */
111void
112arg_put(void *hook __unused, int letter, void *arg, int count, char *name)
113{
114	if (verbose && name && *name)
115		printf("%s:  ", name);
116
117	switch(letter)
118	{
119		case 'i':
120		case 'b':
121		printf("%jd ", (intmax_t)(intptr_t)arg);
122		break;
123
124		case 'c':
125		case 'z':
126		{
127			char *p;
128
129			p = malloc(count + 1);
130			if (p == NULL) {
131				fprintf(stderr, "can't malloc memory for p\n");
132				exit(1);
133			}
134
135			bzero(p, count +1);
136			strncpy(p, (char *)arg, count);
137			if (letter == 'z')
138			{
139				int i;
140				for (i = count - 1; i >= 0; i--)
141					if (p[i] == ' ')
142						p[i] = 0;
143					else
144						break;
145			}
146			printf("%s ", p);
147
148			free(p);
149		}
150
151		break;
152
153		default:
154		printf("Unknown format letter: '%c'\n", letter);
155	}
156	if (verbose)
157		putchar('\n');
158}
159
160/*
161 * Get confirmation from user
162 * Return values:
163 *    1: confirmed
164 *    0: unconfirmed
165 */
166int
167get_confirmation(void)
168{
169	char str[1024];
170	int response = -1;
171
172	do {
173		fprintf(stdout, "Are you SURE you want to do this? (yes/no) ");
174		if (fgets(str, sizeof(str), stdin) != NULL) {
175			if (strncasecmp(str, "yes", 3) == 0)
176				response = 1;
177			else if (strncasecmp(str, "no", 2) == 0)
178				response = 0;
179			else
180				fprintf(stdout,
181				    "Please answer \"yes\" or \"no\"\n");
182		} else
183			response = 0;
184	} while (response == -1);
185	return (response);
186}
187