1 files changed, 39 insertions, 0 deletions
diff --git a/lib/getulong.c b/lib/getulong.c
new file mode 100644
index 0000000..33250e3
--- /dev/null
+++ b/lib/getulong.c
@@ -0,0 +1,39 @@
+/*
+ * SPDX-FileCopyrightText: 2007 - 2009, Nicolas François
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#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)
+{
+	unsigned long int val;
+	char *endptr;
+
+	errno = 0;
+	val = strtoul (numstr, &endptr, 0);
+	if (    ('\0' == *numstr)
+	     || ('\0' != *endptr)
+	     || (ERANGE == errno)
+	   ) {
+		return 0;
+	}
+
+	*result = val;
+	return 1;
+}
+