https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=4028
--- Comment #3 from Julian Fielding <jfielding@xxxxxxxxxxxxxxx> 2009-09-21 05:17:10 PDT ---
(In reply to comment #1)
> Since you seem to have a pretty good handle on it, and access to sample
> captures, could you put together a patch for this?
Two problems: 1) I don't have a development environment set up. 2) I'm not very
familiar with Wireshark code. (And yes, I realise that fixing 1 is the best way
to fix 2.)
Of course, the half size bug is easy:
- dissect_epath( tvbIOI, pi, 0, preq_info->IOILen, TRUE );
+ dissect_epath( tvbIOI, pi, 0, preq_info->IOILen*2, TRUE );
But that doesn't explain the asserts. After more delving, I think the half size
bug usually hides another: In six places proto_tree_add_item is used with size
0 to add an FT_UINT8/16/32 item. I think it should be replaced with
proto_tree_add_uint:
- it = proto_tree_add_item( cia_tree, hf_cip_member8, NULL, 0, 0, TRUE );
+ it = proto_tree_add_uint( cia_tree, hf_cip_member8, NULL, 0, 0, temp_data );
And the same for the other five:
hf_cip_member16
hf_cip_member32
hf_cip_attribute8
hf_cip_attribute16
hf_cip_attribute32
The attachment CIPsizes.pcap contains test cases for all except attribute32 -
my hardware won't generate that.
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