commit 74c305647c892b9035332aaf179d11544104caba
Author: Adrian Huang <ahuang12@lenovo.com>
Date:   Thu Jul 11 15:50:40 2019 +0800

    Fix the exception if hostname is empty
    
    Redfish Host Interface Specification [1] defines the field "Redfish
    Service Hostname" as "Varies", which means it can be empty. Moreover,
    this field is not mandatory for well-defined configuration (a valid
    string).
    
    The original design assumes that this field is the non-empty string
    shown as follows:
    
    -------------------------------------------------------------------
            self.hostname = cursor.split()[0]
    -------------------------------------------------------------------
    
    This leads to the exception, and the "self.hostname" is not configured.
    Here is the error output:
    
    -------------------------------------------------------------------
    redfish-finder: Getting dmidecode info
    redfish-finder: Unexpected error parsing ServiceConfig
    redfish-finder: Building NetworkManager connection info
    redfish-finder: Obtaining OS config info
    redfish-finder: Converting SMBIOS Host Config to NetworkManager Connection info
    redfish-finder: Applying NetworkManager connection configuration changes
    Error: 'enp6s0f3u2u3c2' is not an active connection.
    Error: no active connection provided.
    Connection successfully activated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/5)
    redfish-finder: Adding redfish host info to OS config
    Traceback (most recent call last):
      File "./redfish-finder", line 526, in <module>
        main()
      File "./redfish-finder", line 520, in main
        svc.update_redfish_info()
      File "./redfish-finder", line 349, in update_redfish_info
        if h.find(self.sconf.hostname) != -1:
    AttributeError: ServiceConfig instance has no attribute 'hostname'
    -------------------------------------------------------------------
    
    This patch fixes the above-mentioned issue accordingly.
    
    [1] https://www.dmtf.org/sites/default/files/standards/documents/DSP0270_1.1.0.pdf
    
    Signed-off-by: Adrian Huang <ahuang12@lenovo.com>

diff --git a/redfish-finder b/redfish-finder
index 429cc42..c2cba75 100755
--- a/redfish-finder
+++ b/redfish-finder
@@ -235,7 +235,16 @@ class ServiceConfig():
 			cursor = cursor_consume_next(cursor, "Redfish Service Vlan: ")
 			self.vlan = int(cursor.split()[0])
 			cursor = cursor_consume_next(cursor, "Redfish Service Hostname: ")
-			self.hostname = cursor.split()[0]
+
+			#
+			# Sanity check: If it contains the consecutive spaces
+			# only, reference to the index '0' will throw an
+			# exception.
+			#
+			if len(cursor.split()) != 0:
+				self.hostname = cursor.split()[0]
+			else:
+				self.hostname = ""
 		except:
 			print("redfish-finder: Unexpected error parsing ServiceConfig")