3f022419ae
function return value. Previously, some code used "rval", some used "ret". This standardizes on "ret" and uses "rc" for temporary return codes.
123 lines
3.2 KiB
C
123 lines
3.2 KiB
C
/*
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* Copyright (c) 2013-2016 Todd C. Miller <Todd.Miller@courtesan.com>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <config.h>
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#include <sys/types.h>
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#include <stdio.h>
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#include <stdlib.h>
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#if defined(HAVE_STDINT_H)
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# include <stdint.h>
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#elif defined(HAVE_INTTYPES_H)
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# include <inttypes.h>
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#endif
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#ifdef HAVE_STDBOOL_H
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# include <stdbool.h>
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#else
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# include "compat/stdbool.h"
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#endif
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#include <ctype.h>
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#include <errno.h>
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#include <limits.h>
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#define DEFAULT_TEXT_DOMAIN "sudo"
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#include "sudo_gettext.h" /* must be included before sudo_compat.h */
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#include "sudo_compat.h"
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#include "sudo_debug.h"
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#include "sudo_util.h"
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/*
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* Parse a uid/gid in string form.
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* If sep is non-NULL, it contains valid separator characters (e.g. comma, space)
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* If endp is non-NULL it is set to the next char after the ID.
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* On success, returns the parsed ID and clears errstr.
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* On error, returns 0 and sets errstr.
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*/
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id_t
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sudo_strtoid_v1(const char *p, const char *sep, char **endp, const char **errstr)
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{
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char *ep;
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id_t ret = 0;
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bool valid = false;
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debug_decl(sudo_strtoid, SUDO_DEBUG_UTIL)
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/* skip leading space so we can pick up the sign, if any */
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while (isspace((unsigned char)*p))
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p++;
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if (sep == NULL)
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sep = "";
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errno = 0;
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if (*p == '-') {
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long lval = strtol(p, &ep, 10);
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if (ep != p) {
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/* check for valid separator (including '\0') */
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do {
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if (*ep == *sep)
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valid = true;
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} while (*sep++ != '\0');
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}
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if (!valid) {
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if (errstr != NULL)
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*errstr = N_("invalid value");
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errno = EINVAL;
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goto done;
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}
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if ((errno == ERANGE && lval == LONG_MAX) || lval > INT_MAX) {
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errno = ERANGE;
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if (errstr != NULL)
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*errstr = N_("value too large");
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goto done;
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}
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if ((errno == ERANGE && lval == LONG_MIN) || lval < INT_MIN) {
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errno = ERANGE;
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if (errstr != NULL)
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*errstr = N_("value too small");
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goto done;
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}
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ret = (id_t)lval;
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} else {
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unsigned long ulval = strtoul(p, &ep, 10);
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if (ep != p) {
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/* check for valid separator (including '\0') */
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do {
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if (*ep == *sep)
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valid = true;
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} while (*sep++ != '\0');
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}
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if (!valid) {
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if (errstr != NULL)
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*errstr = N_("invalid value");
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errno = EINVAL;
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goto done;
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}
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if ((errno == ERANGE && ulval == ULONG_MAX) || ulval > UINT_MAX) {
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errno = ERANGE;
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if (errstr != NULL)
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*errstr = N_("value too large");
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goto done;
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}
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ret = (id_t)ulval;
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}
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if (errstr != NULL)
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*errstr = NULL;
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if (endp != NULL)
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*endp = ep;
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done:
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debug_return_int(ret);
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}
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