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| author | Guy Harris <guy@alum.mit.edu> | 2007-04-26 00:01:29 +0000 |
|---|---|---|
| committer | Guy Harris <guy@alum.mit.edu> | 2007-04-26 00:01:29 +0000 |
| commit | 2a48544203f2d970f9c918fb23f2d6f019b9e6f9 (patch) | |
| tree | 53f86e2c04156fcf08e5225de2c418c9cd38318c /epan/dissectors/packet-igrp.c | |
| parent | e077465aa4d76dd9835e026ba31879241c67cbee (diff) | |
| download | wireshark-2a48544203f2d970f9c918fb23f2d6f019b9e6f9.tar.gz | |
Check to make sure the address really *is* an IPv4 address.
If it is, convert the "void *" data pointer to a "guint8 *", so we can
look at the first byte.
svn path=/trunk/; revision=21575
Diffstat (limited to 'epan/dissectors/packet-igrp.c')
| -rw-r--r-- | epan/dissectors/packet-igrp.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/epan/dissectors/packet-igrp.c b/epan/dissectors/packet-igrp.c index fb0d709da0..fc95252a8b 100644 --- a/epan/dissectors/packet-igrp.c +++ b/epan/dissectors/packet-igrp.c @@ -56,6 +56,7 @@ static void dissect_igrp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) guint8 ver_and_opcode,version,opcode,update,network; gint offset=IGRP_HEADER_LENGTH; guint16 as,net1,net2,net3; + const guint8 *ipsrc; proto_item *ti; proto_tree *igrp_tree, *igrp_vektor_tree; tvbuff_t *next_tvb; @@ -105,7 +106,9 @@ static void dissect_igrp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) net3 = tvb_get_ntohs(tvb,8); /* this is a ugly hack to find the first byte of the IP source address */ - network = pinfo->net_src.data[0]; + DISSECTOR_ASSERT(pinfo->net_src.type == AT_IPv4); + ipsrc = pinfo->net_src.data; + network = ipsrc[0]; ti = proto_tree_add_text(igrp_tree, tvb, 4,2,"Interior routes : %d",net1); for( ; net1>0 ; net1-- ) |