Files
sudo/common/atoid.c

85 lines
2.1 KiB
C

/*
* Copyright (c) 2013 Todd C. Miller <Todd.Miller@courtesan.com>
*
* 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 <config.h>
#include <sys/types.h>
#include <stdio.h>
#ifdef STDC_HEADERS
# include <stdlib.h>
# include <stddef.h>
#else
# ifdef HAVE_STDLIB_H
# include <stdlib.h>
# endif
#endif /* STDC_HEADERS */
#if defined(HAVE_STDINT_H)
# include <stdint.h>
#elif defined(HAVE_INTTYPES_H)
# include <inttypes.h>
#endif
#include <errno.h>
#include <limits.h>
#define DEFAULT_TEXT_DOMAIN "sudoers"
#include "gettext.h"
#include "missing.h"
#include "sudo_debug.h"
id_t
atoid(const char *p, const char **errstr)
{
char *ep;
id_t rval = 0;
debug_decl(atoid, SUDO_DEBUG_UTIL)
errno = 0;
if (*p == '-') {
long lval = strtol(p, &ep, 10);
if (ep == p || *ep != '\0') {
*errstr = N_("invalid value");
errno = EINVAL;
goto done;
}
if ((errno == ERANGE && (lval == LONG_MAX || lval == LONG_MIN)) ||
(lval > INT_MAX || lval < INT_MIN)) {
errno = ERANGE;
*errstr = N_("value out of range");
goto done;
}
rval = (id_t)lval;
*errstr = NULL;
} else {
unsigned long ulval = strtoul(p, &ep, 10);
if (ep == p || *ep != '\0') {
*errstr = N_("invalid value");
errno = EINVAL;
goto done;
}
if ((errno == ERANGE && ulval == ULONG_MAX) || ulval > UINT_MAX) {
errno = ERANGE;
*errstr = N_("value too large");
goto done;
}
rval = (id_t)ulval;
*errstr = NULL;
}
done:
debug_return_int(rval);
}