This sure looks like a bug to me. A quick search shows at least these 18 dissectors calling it:
$ grep -l proto_tree_get_parent packet-*.c
packet-amr.c
packet-assa_r3.c
packet-dcerpc.c
packet-h264.c
packet-h450-ros.c
packet-h450.c
packet-h460.c
packet-iax2.c
packet-isakmp.c
packet-mikey.c
packet-mp4ves.c
packet-q931.c
packet-q932-ros.c
packet-qsig.c
packet-rtp.c
packet-smb2.c
packet-ssl.c
packet-tcp.c
If things are working correctly in those dissectors, then I think it's by pure luck and the function call can simply be omitted. Either way, I think the function should be changed to implement what its proto_item_get_parent() peer implements. I would suggest filing a bug report about.
Good catch.
- Chris
-----Original Message-----
From: wireshark-dev-bounces@xxxxxxxxxxxxx [mailto:wireshark-dev-bounces@xxxxxxxxxxxxx] On Behalf Of Eloy Paris
Sent: Thursday, March 25, 2010 8:49 PM
To: Developer support list for Wireshark
Subject: [Wireshark-dev] proto_tree_get_parent()
Is this right (from epan/proto.c):
proto_item*
proto_tree_get_parent(proto_tree *tree) {
if (!tree)
return (NULL);
return (proto_item*) tree;
}
This basically returns the same thing that is received as a parameter.
Shouldn't tree->parent be returned instead, just as
proto_item_get_parent() (a few lines above in the same file) does?
The weird thing is that there is code using this seemingly broken
proto_tree_get_parent(). I don't know how things are working given that
proto_tree_get_parent() is not really providing the parent node.
Confused,
Eloy Paris.-
netexpect.org
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