diff options
author | bapt <bapt@FreeBSD.org> | 2015-07-29 06:23:06 +0000 |
---|---|---|
committer | bapt <bapt@FreeBSD.org> | 2015-07-29 06:23:06 +0000 |
commit | dc24acf353f991eedc9c11264a4358d8097a89c1 (patch) | |
tree | b6d58553cc2ca9720b042cdfffca36743a1d89ca /usr.sbin | |
parent | 4eb9f59af4f0e049f164c1dfd78a3f515aea90d2 (diff) | |
download | FreeBSD-src-dc24acf353f991eedc9c11264a4358d8097a89c1.zip FreeBSD-src-dc24acf353f991eedc9c11264a4358d8097a89c1.tar.gz |
Actually add the new code
Diffstat (limited to 'usr.sbin')
-rw-r--r-- | usr.sbin/pw/strtounum.c | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/usr.sbin/pw/strtounum.c b/usr.sbin/pw/strtounum.c new file mode 100644 index 0000000..9687795 --- /dev/null +++ b/usr.sbin/pw/strtounum.c @@ -0,0 +1,73 @@ +/*- + * Copyright (C) Baptiste Daroussin <bapt@FreeBSD.org> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY DAVID L. NUGENT AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL DAVID L. NUGENT OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <errno.h> +#include <inttypes.h> +#include <limits.h> +#include <stdlib.h> + +#include "pw.h" + +#define INVALID "invalid" +#define TOOSMALL "too small" +#define TOOLARGE "too large" + +uintmax_t +strtounum(const char *numstr, uintmax_t minval, uintmax_t maxval, + const char **errstrp) +{ + uintmax_t ret = 0; + char *ep; + + if (minval > maxval) { + errno = EINVAL; + if (errstrp != NULL) + *errstrp = INVALID; + return (0); + } + + ret = strtoumax(numstr, &ep, 10); + if (errno == EINVAL || numstr == ep || *ep != '\0') { + errno = EINVAL; + if (errstrp != NULL) + *errstrp = INVALID; + return (0); + } else if ((ret == 0 && errno == ERANGE) || ret < minval) { + errno = ERANGE; + if (errstrp != NULL) + *errstrp = TOOSMALL; + return (0); + } else if ((ret == UINTMAX_MAX && errno == ERANGE) || ret > maxval) { + errno = ERANGE; + if (errstrp != NULL) + *errstrp = TOOLARGE; + return (0); + } + + return (ret); +} |