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author | Christian Perrier <bubulle@debian.org> | 2013-07-27 18:42:08 +0200 |
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committer | Christian Perrier <bubulle@debian.org> | 2013-07-27 18:42:08 +0200 |
commit | db1dc7288b64873f4f39e8404fd99c1bf55c7a8b (patch) | |
tree | 10026e84c8b73d4e5ad6704ab1cb78ea7c63c305 /lib/getulong.c | |
parent | 6d11fd0a58e3bc52763f121421b1c0ffe09d48be (diff) | |
download | shadow-db1dc7288b64873f4f39e8404fd99c1bf55c7a8b.tar.gz |
Imported Upstream version 4.1.5.1upstream/4.1.5.1
Diffstat (limited to 'lib/getulong.c')
-rw-r--r-- | lib/getulong.c | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/lib/getulong.c b/lib/getulong.c new file mode 100644 index 00000000..61579cae --- /dev/null +++ b/lib/getulong.c @@ -0,0 +1,65 @@ +/* + * Copyright (c) 2007 - 2009, Nicolas François + * All rights reserved. + * + * 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. + * 3. The name of the copyright holders or contributors may not be used to + * endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 THE COPYRIGHT + * HOLDERS 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 <config.h> + +#ident "$Id: getlong.c 2763 2009-04-23 09:57:03Z nekral-guest $" + +#include <stdlib.h> +#include <errno.h> +#include "prototypes.h" + +/* + * getulong - extract an unsigned long integer provided by the numstr string in *result + * + * It supports decimal, hexadecimal or octal representations. + * + * Returns 0 on failure, 1 on success. + */ +int getulong (const char *numstr, /*@out@*/unsigned long int *result) +{ + long long int val; + char *endptr; + + errno = 0; + val = strtoll (numstr, &endptr, 0); + if ( ('\0' == *numstr) + || ('\0' != *endptr) + || (ERANGE == errno) + /*@+ignoresigns@*/ + || (val != (unsigned long int)val) + /*@=ignoresigns@*/ + ) { + return 0; + } + + *result = (unsigned long int)val; + return 1; +} + |