freebsd-dev/sbin/camcontrol/util.c
2011-11-25 07:11:02 +00:00

185 lines
4.3 KiB
C

/*
* Written By Julian ELischer
* Copyright julian Elischer 1993.
* Permission is granted to use or redistribute this file in any way as long
* as this notice remains. Julian Elischer does not guarantee that this file
* is totally correct for any given task and users of this file must
* accept responsibility for any damage that occurs from the application of this
* file.
*
* (julian@tfs.com julian@dialix.oz.au)
*
* User SCSI hooks added by Peter Dufault:
*
* Copyright (c) 1994 HD Associates
* (contact: dufault@hda.com)
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of HD Associates
* may not be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY HD ASSOCIATES ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL HD ASSOCIATES BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/*
* Taken from the original scsi(8) program.
* from: scsi.c,v 1.17 1998/01/12 07:57:57 charnier Exp $";
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/stdint.h>
#include <sys/types.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <camlib.h>
#include "camcontrol.h"
int verbose;
/* iget: Integer argument callback
*/
int
iget(void *hook, char *name)
{
struct get_hook *h = (struct get_hook *)hook;
int arg;
if (h->got >= h->argc)
{
fprintf(stderr, "Expecting an integer argument.\n");
usage(0);
exit(1);
}
arg = strtol(h->argv[h->got], 0, 0);
h->got++;
if (verbose && name && *name)
printf("%s: %d\n", name, arg);
return arg;
}
/* cget: char * argument callback
*/
char *
cget(void *hook, char *name)
{
struct get_hook *h = (struct get_hook *)hook;
char *arg;
if (h->got >= h->argc)
{
fprintf(stderr, "Expecting a character pointer argument.\n");
usage(0);
exit(1);
}
arg = h->argv[h->got];
h->got++;
if (verbose && name)
printf("cget: %s: %s", name, arg);
return arg;
}
/* arg_put: "put argument" callback
*/
void
arg_put(void *hook __unused, int letter, void *arg, int count, char *name)
{
if (verbose && name && *name)
printf("%s: ", name);
switch(letter)
{
case 'i':
case 'b':
printf("%jd ", (intmax_t)(intptr_t)arg);
break;
case 'c':
case 'z':
{
char *p;
p = malloc(count + 1);
if (p == NULL) {
fprintf(stderr, "can't malloc memory for p\n");
exit(1);
}
bzero(p, count +1);
strncpy(p, (char *)arg, count);
if (letter == 'z')
{
int i;
for (i = count - 1; i >= 0; i--)
if (p[i] == ' ')
p[i] = 0;
else
break;
}
printf("%s ", p);
free(p);
}
break;
default:
printf("Unknown format letter: '%c'\n", letter);
}
if (verbose)
putchar('\n');
}
/*
* Get confirmation from user
* Return values:
* 1: confirmed
* 0: unconfirmed
*/
int
get_confirmation(void)
{
char str[1024];
int response = -1;
do {
fprintf(stdout, "Are you SURE you want to do this? (yes/no) ");
if (fgets(str, sizeof(str), stdin) != NULL) {
if (strncasecmp(str, "yes", 3) == 0)
response = 1;
else if (strncasecmp(str, "no", 2) == 0)
response = 0;
else
fprintf(stdout,
"Please answer \"yes\" or \"no\"\n");
} else
response = 0;
} while (response == -1);
return (response);
}