Change in python/osmo-python-tests[master]: osmo_ipa: add extended checks

[Max]

Max has uploaded this change for review. ( https://gerrit.osmocom.org/11937


Change subject: osmo_ipa: add extended checks
......................................................................

osmo_ipa: add extended checks

Make sure we properly handle None objects.

Change-Id: If5ddc04b8a5dc26e56e5f5bbec7f28cf0af4a97b
---
M osmopy/osmo_ipa.py
1 file changed, 5 insertions(+), 1 deletion(-)



  git pull ssh://gerrit.osmocom.org:29418/python/osmo-python-tests refs/changes/37/11937/1

diff --git a/osmopy/osmo_ipa.py b/osmopy/osmo_ipa.py
index 41865c1..462c4ec 100755
--- a/osmopy/osmo_ipa.py
+++ b/osmopy/osmo_ipa.py
@@ -106,8 +106,9 @@
         Strip IPA protocol header correctly removing extension if present
         Returns data length, IPA protocol, extension (or None if not defined for a give protocol) and the data without header
         """
-        if not len(data):
+        if data == None or len(data) == 0:
             return None, None, None, None
+
         (dlen, proto) = struct.unpack('>HB', data[:3])
         if self.PROTO['OSMO'] == proto or self.PROTO['CCM'] == proto: # there's extension which we have to unpack
             return struct.unpack('>HBB', data[:4]) + (data[4:], ) # length, protocol, extension, data
@@ -117,6 +118,9 @@
         """
         Split the data which contains multiple concatenated IPA messages into tuple (first, rest) where rest contains remaining messages, first is the single IPA message
         """
+        if data == None or len(data) == 0:
+            return None, None
+
         (length, _, _, _) = self.del_header(data)
         return data[:(length + 3)], data[(length + 3):]
 

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Gerrit-Project: python/osmo-python-tests
Gerrit-Branch: master
Gerrit-MessageType: newchange
Gerrit-Change-Id: If5ddc04b8a5dc26e56e5f5bbec7f28cf0af4a97b
Gerrit-Change-Number: 11937
Gerrit-PatchSet: 1
Gerrit-Owner: Max <msuraev at sysmocom.de>
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