diff options
| author | Michael Mann <mmann78@netscape.net> | 2015-08-17 20:34:47 -0400 |
|---|---|---|
| committer | Anders Broman <a.broman58@gmail.com> | 2015-08-18 12:50:29 +0000 |
| commit | c05df9932caeb14dd32f5edce65cb9c348b5984c (patch) | |
| tree | a40040496a3991311f33831c085ea327432b3359 /epan/dissectors/packet-udp.h | |
| parent | db5b786e55d25139b8806fcbc2852941a77118db (diff) | |
Add udp_dissect_pdus.
It works similar to tcp_dissect_pdus, but only works on a single packet. Intended for protocols that go over TCP and UDP so that they can have a common dissection function.
Will of course, also work on UDP-only protocols with a fixed length header and size.
Used DNP3 as a guinea pig since "multiple PDU support" over UDP was just added.
Change-Id: Ib7af8eaf7102c96b4f8b5c1b891ae2d8f0886f9d
Reviewed-on: https://code.wireshark.org/review/10083
Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org>
Reviewed-by: Hadriel Kaplan <hadrielk@yahoo.com>
Reviewed-by: Dario Lombardo <lomato@gmail.com>
Reviewed-by: Anders Broman <a.broman58@gmail.com>
Diffstat (limited to 'epan/dissectors/packet-udp.h')
| -rw-r--r-- | epan/dissectors/packet-udp.h | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/epan/dissectors/packet-udp.h b/epan/dissectors/packet-udp.h index 164c5e3592..6bffbb190b 100644 --- a/epan/dissectors/packet-udp.h +++ b/epan/dissectors/packet-udp.h @@ -109,6 +109,28 @@ WS_DLL_PUBLIC void decode_udp_ports(tvbuff_t *, int, packet_info *, WS_DLL_PUBLIC struct udp_analysis *get_udp_conversation_data(conversation_t *, packet_info *); +/* + * Loop for dissecting PDUs within a UDP packet; Similar to tcp_dissect_pdus, + * but doesn't have stream support. Assumes that a PDU consists of a + * fixed-length chunk of data that contains enough information + * to determine the length of the PDU, followed by rest of the PDU. + * + * The first three arguments are the arguments passed to the dissector + * that calls this routine. + * + * "fixed_len" is the length of the fixed-length part of the PDU. + * + * "get_pdu_len()" is a routine called to get the length of the PDU from + * the fixed-length part of the PDU; it's passed "pinfo", "tvb", "offset" and + * "dissector_data". + * + * "dissect_pdu()" is the routine to dissect a PDU. + */ +WS_DLL_PUBLIC void +udp_dissect_pdus(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, + guint fixed_len, guint (*get_pdu_len)(packet_info *, tvbuff_t *, int, void*), + new_dissector_t dissect_pdu, void* dissector_data); + #ifdef __cplusplus } #endif /* __cplusplus */ |