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/* $OpenBSD: misc.c,v 1.79 2021/08/07 13:33:12 krw Exp $ */
/*
* Copyright (c) 1997 Tobias Weingartner
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/types.h>
#include <sys/disklabel.h>
#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "part.h"
#include "disk.h"
#include "misc.h"
struct unit_type unit_types[] = {
{ "b" , 1LL , "Bytes" },
{ " " , 0LL , "Sectors" },
{ "K" , 1024LL , "Kilobytes" },
{ "M" , 1024LL * 1024 , "Megabytes" },
{ "G" , 1024LL * 1024 *1024 , "Gigabytes" },
{ "T" , 1024LL * 1024 * 1024 * 1024 , "Terabytes" },
{ NULL , 0 , NULL },
};
int
unit_lookup(const char *units)
{
int i = 0;
if (units == NULL)
return SECTORS;
while (unit_types[i].ut_abbr != NULL) {
if (strncasecmp(unit_types[i].ut_abbr, units, 1) == 0)
break;
i++;
}
if (unit_types[i].ut_abbr == NULL)
return SECTORS;
return i;
}
int
string_from_line(char *buf, const size_t buflen)
{
static char *line;
static size_t sz;
ssize_t len;
len = getline(&line, &sz, stdin);
if (len == -1)
return -1;
if (line[len - 1] == '\n')
line[len - 1] = '\0';
strlcpy(buf, line, buflen);
return 0;
}
int
ask_yn(const char *str)
{
int ch, first;
extern int y_flag;
if (y_flag)
return 1;
printf("%s [n] ", str);
fflush(stdout);
first = ch = getchar();
while (ch != '\n' && ch != EOF)
ch = getchar();
if (ch == EOF || first == EOF)
errx(1, "eof");
return first == 'y' || first == 'Y';
}
/*
* adapted from sbin/disklabel/editor.c
*/
uint64_t
getuint64(const char *prompt, uint64_t oval, const uint64_t minval,
const uint64_t maxval)
{
char buf[BUFSIZ], *endptr, *p, operator = '\0';
const int secsize = unit_types[SECTORS].ut_conversion;
size_t n;
int64_t mult = 1;
double d, d2;
int rslt, secpercyl, saveerr;
char unit;
if (oval > maxval)
oval = maxval;
if (oval < minval)
oval = minval;
secpercyl = disk.dk_sectors * disk.dk_heads;
do {
printf("%s [%llu - %llu]: [%llu] ", prompt, minval, maxval,
oval);
if (string_from_line(buf, sizeof(buf)))
errx(1, "eof");
if (buf[0] == '\0') {
rslt = snprintf(buf, sizeof(buf), "%llu", oval);
if (rslt < 0 || rslt >= sizeof(buf))
errx(1, "default value too long");
} else if (buf[0] == '*' && buf[1] == '\0') {
return maxval;
}
/* deal with units */
n = strlen(buf);
switch (tolower((unsigned char)buf[n-1])) {
case 'c':
unit = 'c';
mult = secpercyl;
buf[--n] = '\0';
break;
case 'b':
unit = 'b';
mult = -(int64_t)secsize;
buf[--n] = '\0';
break;
case 's':
unit = 's';
mult = 1;
buf[--n] = '\0';
break;
case 'k':
unit = 'k';
if (secsize > 1024)
mult = -(int64_t)secsize / 1024LL;
else
mult = 1024LL / secsize;
buf[--n] = '\0';
break;
case 'm':
unit = 'm';
mult = (1024LL * 1024) / secsize;
buf[--n] = '\0';
break;
case 'g':
unit = 'g';
mult = (1024LL * 1024 * 1024) / secsize;
buf[--n] = '\0';
break;
case 't':
unit = 't';
mult = (1024LL * 1024 * 1024 * 1024) / secsize;
buf[--n] = '\0';
break;
default:
unit = ' ';
mult = 1;
break;
}
/* deal with the operator */
p = &buf[0];
if (*p == '+' || *p == '-')
operator = *p++;
else
operator = ' ';
endptr = p;
errno = 0;
d = strtod(p, &endptr);
saveerr = errno;
d2 = d;
if (mult > 0)
d *= mult;
else {
d /= (-mult);
d2 = d;
}
/* Apply the operator */
if (operator == '+')
d = oval + d;
else if (operator == '-') {
d = oval - d;
d2 = d;
}
if (saveerr == ERANGE || d > maxval || d < minval || d < d2) {
printf("%s is out of range: %c%s%c\n", prompt, operator,
p, unit);
} else if (*endptr != '\0') {
printf("%s is invalid: %c%s%c\n", prompt, operator,
p, unit);
} else {
break;
}
} while (1);
return (uint64_t)d;
}
char *
utf16le_to_string(const uint16_t *utf)
{
static char name[GPTPARTNAMESIZE];
int i;
for (i = 0; i < GPTPARTNAMESIZE; i++) {
name[i] = letoh16(utf[i]) & 0x7F;
if (name[i] == '\0')
break;
}
if (i == GPTPARTNAMESIZE)
name[i - 1] = '\0';
return name;
}
uint16_t *
string_to_utf16le(const char *ch)
{
static uint16_t utf[GPTPARTNAMESIZE];
int i;
for (i = 0; i < GPTPARTNAMESIZE; i++) {
utf[i] = htole16((unsigned int)ch[i]);
if (utf[i] == 0)
break;
}
if (i == GPTPARTNAMESIZE)
utf[i - 1] = 0;
return utf;
}
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