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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <stdint.h>
#include "c.h"
#include "strutils.h"
#include "rpmatch.h"
#include "fdisk.h"
static int get_user_reply(struct fdisk_context *cxt, char *prompt,
char *buf, size_t bufsz)
{
char *p;
size_t sz;
do {
fputs(prompt, stdout);
fflush(stdout);
if (!fgets(buf, bufsz, stdin)) {
if (fdisk_label_is_changed(cxt->label)) {
fprintf(stderr, _("Do you really want to quit? "));
if (fgets(buf, bufsz, stdin) && !rpmatch(buf))
continue;
}
fdisk_free_context(cxt);
exit(EXIT_FAILURE);
} else
break;
} while (1);
for (p = buf; *p && !isgraph(*p); p++); /* get first non-blank */
if (p > buf)
memmove(buf, p, p - buf); /* remove blank space */
sz = strlen(buf);
if (sz && *(buf + sz - 1) == '\n')
*(buf + sz - 1) = '\0';
DBG(ASK, dbgprint("user's reply: >>>%s<<<", buf));
return 0;
}
static int ask_number(struct fdisk_context *cxt,
struct fdisk_ask *ask,
char *buf, size_t bufsz)
{
char prompt[128] = { '\0' };
const char *q = fdisk_ask_get_query(ask);
const char *range = fdisk_ask_number_get_range(ask);
uint64_t dflt = fdisk_ask_number_get_default(ask),
low = fdisk_ask_number_get_low(ask),
high = fdisk_ask_number_get_high(ask);
assert(q);
DBG(ASK, dbgprint("asking for number ['%s', <%jd,%jd>, default=%jd, range: %s]",
q, low, high, dflt, range));
if (range && dflt >= low && dflt <= high)
snprintf(prompt, sizeof(prompt), _("%s (%s, default %jd): "), q, range, dflt);
else if (dflt >= low && dflt <= high)
snprintf(prompt, sizeof(prompt), _("%s (%jd-%jd, default %jd): "), q, low, high, dflt);
else
snprintf(prompt, sizeof(prompt), _("%s (%jd-%jd): "), q, low, high);
do {
int rc = get_user_reply(cxt, prompt, buf, bufsz);
if (rc)
return rc;
if (!*buf && dflt >= low && dflt <= high)
return fdisk_ask_number_set_result(ask, dflt);
else if (isdigit_string(buf)) {
char *end;
uint64_t num;
errno = 0;
num = strtoumax(buf, &end, 10);
if (errno || buf == end || (end && *end))
continue;
if (num >= low && num <= high)
return fdisk_ask_number_set_result(ask, num);
printf(_("Value out of range.\n"));
}
} while (1);
return -1;
}
static int ask_offset(struct fdisk_context *cxt,
struct fdisk_ask *ask,
char *buf, size_t bufsz)
{
char prompt[128] = { '\0' };
const char *q = fdisk_ask_get_query(ask);
const char *range = fdisk_ask_number_get_range(ask);
uint64_t dflt = fdisk_ask_number_get_default(ask),
low = fdisk_ask_number_get_low(ask),
high = fdisk_ask_number_get_high(ask),
base = fdisk_ask_number_get_base(ask);
assert(q);
DBG(ASK, dbgprint("asking for offset ['%s', <%jd,%jd>, base=%jd, default=%jd, range: %s]",
q, low, high, base, dflt, range));
if (range && dflt >= low && dflt <= high)
snprintf(prompt, sizeof(prompt), _("%s (%s, default %jd): "), q, range, dflt);
else if (dflt >= low && dflt <= high)
snprintf(prompt, sizeof(prompt), _("%s (%jd-%jd, default %jd): "), q, low, high, dflt);
else
snprintf(prompt, sizeof(prompt), _("%s (%jd-%jd): "), q, low, high);
do {
uint64_t num = 0;
char sig = 0, *p;
int pwr = 0;
int rc = get_user_reply(cxt, prompt, buf, bufsz);
if (rc)
return rc;
if (!*buf && dflt >= low && dflt <= high)
return fdisk_ask_number_set_result(ask, dflt);
p = buf;
if (*p == '+' || *p == '-') {
sig = *buf;
p++;
}
rc = parse_size(p, &num, &pwr);
if (rc)
continue;
DBG(ASK, dbgprint("parsed size: %jd", num));
if (sig && pwr) {
/* +{size}{K,M,...} specified, the "num" is in bytes */
uint64_t unit = fdisk_ask_number_get_unit(ask);
num += unit/2; /* round */
num /= unit;
}
if (sig == '+')
num += base;
else if (sig == '-')
num = base - num;
DBG(ASK, dbgprint("final offset: %jd [sig: %c, power: %d, %s]",
num, sig, pwr,
sig ? "relative" : "absolute"));
if (num >= low && num <= high) {
if (sig)
fdisk_ask_number_set_relative(ask, 1);
return fdisk_ask_number_set_result(ask, num);
}
printf(_("Value out of range.\n"));
} while (1);
return -1;
}
int ask_callback(struct fdisk_context *cxt, struct fdisk_ask *ask,
void *data __attribute__((__unused__)))
{
va_list ap;
int rc = 0;
char buf[BUFSIZ];
assert(cxt);
assert(ask);
switch(fdisk_ask_get_type(ask)) {
case FDISK_ASKTYPE_NUMBER:
return ask_number(cxt, ask, buf, sizeof(buf));
case FDISK_ASKTYPE_OFFSET:
return ask_offset(cxt, ask, buf, sizeof(buf));
case FDISK_ASKTYPE_INFO:
fdisk_ask_print_get_va(ask, ap);
vfprintf(stdout, fdisk_ask_print_get_mesg(ask), ap);
fputc('\n', stdout);
va_end(ap);
break;
case FDISK_ASKTYPE_WARNX:
fdisk_ask_print_get_va(ask, ap);
vfprintf(stderr, fdisk_ask_print_get_mesg(ask), ap);
fputc('\n', stderr);
va_end(ap);
break;
case FDISK_ASKTYPE_WARN:
fdisk_ask_print_get_va(ask, ap);
vfprintf(stderr, fdisk_ask_print_get_mesg(ask), ap);
errno = fdisk_ask_print_get_errno(ask);
fprintf(stderr, ": %m\n");
va_end(ap);
break;
case FDISK_ASKTYPE_YESNO:
fputc('\n', stdout);
fputs(fdisk_ask_get_query(ask), stdout);
rc = get_user_reply(cxt, _(" [Y]es/[N]o: "), buf, sizeof(buf));
if (rc == 0)
ask->data.yesno.result = rpmatch(buf);
DBG(ASK, dbgprint("yes-no ask: reply '%s' [rc=%d]", buf, rc));
break;
default:
warnx(_("internal error: unssuported dialog type %d"), fdisk_ask_get_type(ask));
return -EINVAL;
}
return rc;
}
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