diff options
| author | guy <guy@f5534014-38df-0310-8fa8-9805f1628bb7> | 2000-03-21 04:15:14 +0000 |
|---|---|---|
| committer | guy <guy@f5534014-38df-0310-8fa8-9805f1628bb7> | 2000-03-21 04:15:14 +0000 |
| commit | a5c3282ff58dbece3306093818d78399b29a57d5 (patch) | |
| tree | d8a5e1b262dc1fe163bff9afd94318ae8eab7438 /packet-ipv6.c | |
| parent | fde3ddd0e6a8ae3edb0d8778f247ff17941207bf (diff) | |
Jochen Friedrich's fix to IPv6 fragment handling.
git-svn-id: http://anonsvn.wireshark.org/wireshark/trunk@1734 f5534014-38df-0310-8fa8-9805f1628bb7
Diffstat (limited to 'packet-ipv6.c')
| -rw-r--r-- | packet-ipv6.c | 28 |
1 files changed, 20 insertions, 8 deletions
diff --git a/packet-ipv6.c b/packet-ipv6.c index 9d7a1882bb..b93f3cc2bc 100644 --- a/packet-ipv6.c +++ b/packet-ipv6.c @@ -1,7 +1,7 @@ /* packet-ipv6.c * Routines for IPv6 packet disassembly * - * $Id: packet-ipv6.c,v 1.30 2000/03/14 06:03:22 guy Exp $ + * $Id: packet-ipv6.c,v 1.31 2000/03/21 04:15:04 guy Exp $ * * Ethereal - Network traffic analyzer * By Gerald Combs <gerald@zing.org> @@ -137,18 +137,19 @@ dissect_routing6(const u_char *pd, int offset, frame_data *fd, proto_tree *tree) } static int -dissect_frag6(const u_char *pd, int offset, frame_data *fd, proto_tree *tree) { +dissect_frag6(const u_char *pd, int offset, frame_data *fd, proto_tree *tree, + int *fragstart) { struct ip6_frag frag; int len; memcpy(&frag, (void *) &pd[offset], sizeof(frag)); len = sizeof(frag); - + *fragstart = ntohs(frag.ip6f_offlg) & 0xfff8; if (check_col(fd, COL_INFO)) { col_add_fstr(fd, COL_INFO, "IPv6 fragment (nxt=%s (0x%02x) off=0x%04x id=0x%x)", ipprotostr(frag.ip6f_nxt), frag.ip6f_nxt, - (frag.ip6f_offlg >> 3) & 0x1fff, frag.ip6f_ident); + *fragstart, frag.ip6f_ident); } return len; } @@ -254,6 +255,7 @@ dissect_ipv6(const u_char *pd, int offset, frame_data *fd, proto_tree *tree) { guint8 nxt; int advance; int poffset; + int frag; struct ip6_hdr ipv6; @@ -332,6 +334,7 @@ dissect_ipv6(const u_char *pd, int offset, frame_data *fd, proto_tree *tree) { /* start of the new header (could be a extension header) */ nxt = pd[poffset = offset + offsetof(struct ip6_hdr, ip6_nxt)]; offset += sizeof(struct ip6_hdr); + frag = 0; again: switch (nxt) { @@ -349,7 +352,7 @@ again: offset += advance; goto again; case IP_PROTO_FRAGMENT: - advance = dissect_frag6(pd, offset, fd, tree); + advance = dissect_frag6(pd, offset, fd, tree, &frag); nxt = pd[poffset = offset]; offset += advance; goto again; @@ -357,7 +360,10 @@ again: #ifdef TEST_FINALHDR proto_tree_add_item_hidden(ipv6_tree, hf_ipv6_final, poffset, 1, nxt); #endif - dissect_icmpv6(pd, offset, fd, tree); + if (!frag) + dissect_icmpv6(pd, offset, fd, tree); + else + dissect_data(pd, offset, fd, tree); break; case IP_PROTO_NONE: #ifdef TEST_FINALHDR @@ -384,13 +390,19 @@ again: #ifdef TEST_FINALHDR proto_tree_add_item_hidden(ipv6_tree, hf_ipv6_final, poffset, 1, nxt); #endif - dissect_tcp(pd, offset, fd, tree); + if (!frag) + dissect_tcp(pd, offset, fd, tree); + else + dissect_data(pd, offset, fd, tree); break; case IP_PROTO_UDP: #ifdef TEST_FINALHDR proto_tree_add_item_hidden(ipv6_tree, hf_ipv6_final, poffset, 1, nxt); #endif - dissect_udp(pd, offset, fd, tree); + if (!frag) + dissect_udp(pd, offset, fd, tree); + else + dissect_data(pd, offset, fd, tree); break; case IP_PROTO_PIM: #ifdef TEST_FINALHDR |