From e0b75fba8c6184b32e25595b2fcac072a4f399e5 Mon Sep 17 00:00:00 2001
From: Zdenek Styblik <zdenek.styblik@gmail.com>
Date: Wed, 25 Jan 2012 14:57:12 +0000
Subject: [PATCH] Adds function str2uint() to convert string to uint16_t with
 checks for valid input.

---
 ipmitool/lib/helper.c | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/ipmitool/lib/helper.c b/ipmitool/lib/helper.c
index e258609..9bf5fe5 100644
--- a/ipmitool/lib/helper.c
+++ b/ipmitool/lib/helper.c
@@ -247,6 +247,30 @@ int str2short(const char * str, int16_t * shrt_ptr)
 	return 0;
 } /* str2short(...) */
 
+/* str2ushort - safely convert string to uint16_t
+ *
+ * @str: source string to convert from
+ * @ushrt_ptr: pointer where to store result
+ *
+ * returns zero on success
+ * returns (-1) if one of args is NULL, (-2) invalid input, (-3) for *flow
+ */
+int str2ushort(const char * str, uint16_t * ushrt_ptr)
+{
+	int rc = (-3);
+	uint64_t arg_ulong = 0;
+	if ( (rc = str2ulong(str, &arg_ulong)) != 0 ) {
+		*ushrt_ptr = 0;
+		return rc;
+	}
+
+	if (arg_ulong > UINT16_MAX)
+		return (-3);
+
+	*ushrt_ptr = (uint16_t)arg_ulong;
+	return 0;
+} /* str2ushort(...) */
+
 /* str2uchar - safely convert string to uint8
  *
  * @str: source string to convert from