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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-15 20:46:53 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-15 20:46:53 +0000
commit19da58be2d9359a9641381feb559be0b918ef710 (patch)
tree109724175f07436696f51b14b5abbd3f4d704d6d /lib/getlong.c
parentInitial commit. (diff)
downloadshadow-19da58be2d9359a9641381feb559be0b918ef710.tar.xz
shadow-19da58be2d9359a9641381feb559be0b918ef710.zip
Adding upstream version 1:4.13+dfsg1.upstream/1%4.13+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'lib/getlong.c')
-rw-r--r--lib/getlong.c36
1 files changed, 36 insertions, 0 deletions
diff --git a/lib/getlong.c b/lib/getlong.c
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+++ b/lib/getlong.c
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+/*
+ * SPDX-FileCopyrightText: 2007 - 2009, Nicolas François
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <config.h>
+
+#ident "$Id$"
+
+#include <stdlib.h>
+#include <errno.h>
+#include "prototypes.h"
+
+/*
+ * getlong - extract a long integer provided by the numstr string in *result
+ *
+ * It supports decimal, hexadecimal or octal representations.
+ *
+ * Returns 0 on failure, 1 on success.
+ */
+int getlong (const char *numstr, /*@out@*/long int *result)
+{
+ long val;
+ char *endptr;
+
+ errno = 0;
+ val = strtol (numstr, &endptr, 0);
+ if (('\0' == *numstr) || ('\0' != *endptr) || (ERANGE == errno)) {
+ return 0;
+ }
+
+ *result = val;
+ return 1;
+}
+