126 lines
3.1 KiB
C
126 lines
3.1 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
|
|
#ifdef HAVE_STDBOOL_H
|
|
# include <stdbool.h>
|
|
#else
|
|
# include "compat/stdbool.h"
|
|
#endif
|
|
#include <errno.h>
|
|
#include <limits.h>
|
|
|
|
#define DEFAULT_TEXT_DOMAIN "sudo"
|
|
#include "gettext.h" /* must be included before missing.h */
|
|
|
|
#include "missing.h"
|
|
#include "sudo_debug.h"
|
|
#include "sudo_util.h"
|
|
|
|
/*
|
|
* Parse a uid/gid in string form.
|
|
* If sep is non-NULL, it contains valid separator characters (e.g. comma, space)
|
|
* If endp is non-NULL it is set to the next char after the ID.
|
|
* On success, returns the parsed ID and clears errstr.
|
|
* On error, returns 0 and sets errstr.
|
|
*/
|
|
id_t
|
|
atoid(const char *p, const char *sep, char **endp, const char **errstr)
|
|
{
|
|
char *ep;
|
|
id_t rval = 0;
|
|
bool valid = false;
|
|
debug_decl(atoid, SUDO_DEBUG_UTIL)
|
|
|
|
if (sep == NULL)
|
|
sep = "";
|
|
errno = 0;
|
|
if (*p == '-') {
|
|
long lval = strtol(p, &ep, 10);
|
|
if (ep != p) {
|
|
/* check for valid separator (including '\0') */
|
|
do {
|
|
if (*ep == *sep)
|
|
valid = true;
|
|
} while (*sep++ != '\0');
|
|
}
|
|
if (!valid) {
|
|
if (errstr != NULL)
|
|
*errstr = N_("invalid value");
|
|
errno = EINVAL;
|
|
goto done;
|
|
}
|
|
if ((errno == ERANGE && lval == LONG_MAX) || lval > INT_MAX) {
|
|
errno = ERANGE;
|
|
if (errstr != NULL)
|
|
*errstr = N_("value too large");
|
|
goto done;
|
|
}
|
|
if ((errno == ERANGE && lval == LONG_MIN) || lval < INT_MIN) {
|
|
errno = ERANGE;
|
|
if (errstr != NULL)
|
|
*errstr = N_("value too small");
|
|
goto done;
|
|
}
|
|
rval = (id_t)lval;
|
|
} else {
|
|
unsigned long ulval = strtoul(p, &ep, 10);
|
|
if (ep != p) {
|
|
/* check for valid separator (including '\0') */
|
|
do {
|
|
if (*ep == *sep)
|
|
valid = true;
|
|
} while (*sep++ != '\0');
|
|
}
|
|
if (!valid) {
|
|
if (errstr != NULL)
|
|
*errstr = N_("invalid value");
|
|
errno = EINVAL;
|
|
goto done;
|
|
}
|
|
if ((errno == ERANGE && ulval == ULONG_MAX) || ulval > UINT_MAX) {
|
|
errno = ERANGE;
|
|
if (errstr != NULL)
|
|
*errstr = N_("value too large");
|
|
goto done;
|
|
}
|
|
rval = (id_t)ulval;
|
|
}
|
|
if (errstr != NULL)
|
|
*errstr = NULL;
|
|
if (endp != NULL)
|
|
*endp = ep;
|
|
done:
|
|
debug_return_int(rval);
|
|
}
|