155 lines
4.7 KiB
C
155 lines
4.7 KiB
C
/* packet-artemis.c
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* Dissector of ActiveMQ Artemis Core Protocol, so far just the message headers
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* Implemented: 2017, Pavel Moravec, Red Hat <pmoravec@redhat.com>
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*
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* Protocol information:
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* https://github.com/apache/activemq-artemis/blob/master/artemis-core-client/src/main/java/org/apache/activemq/artemis/core/protocol/core/impl/PacketImpl.java#L309-L326
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*/
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#include "config.h"
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#include <epan/packet.h>
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#include <epan/expert.h>
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#include "packet-tcp.h"
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#include "stdio.h"
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#define ARTEMIS_PORT 5445 /* Not IANA registered */
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static int proto_artemis = -1;
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/* handles */
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static int hf_artemis_len = -1;
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static int hf_artemis_type = -1;
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static int hf_artemis_channel = -1;
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static int hf_artemis_buffer = -1;
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static gint ett_artemis = -1;
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static expert_field ei_artemis_len_short = EI_INIT;
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static dissector_handle_t artemis_tcp_handle = NULL;
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void proto_register_artemis(void);
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void proto_reg_handoff_artemis(void);
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static int dissect_artemis(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree _U_, void *data _U_);
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static guint
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get_artemis_message_len(packet_info *pinfo _U_, tvbuff_t *tvb,
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int offset, void *data _U_)
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{
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/* The 4bytes length doesn't include the actual length byte, that's why the "+4" */
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return (guint) tvb_get_ntohl(tvb, offset) + 4;
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}
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static int
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dissect_artemis_frame(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
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{
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proto_item *ti, *len_item;
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proto_tree *artemis_tree;
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guint32 length;
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ti = proto_tree_add_item(tree, proto_artemis, tvb, 0, -1, ENC_NA);
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artemis_tree = proto_item_add_subtree(ti, ett_artemis);
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len_item = proto_tree_add_item_ret_uint(artemis_tree, hf_artemis_len, tvb, 0, 4, ENC_BIG_ENDIAN, &length);
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if (length < 9) { /* 9 = 1(type) + channel(8), if length is smaller, we cant read even type+channel */
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expert_add_info(pinfo, len_item, &ei_artemis_len_short);
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return tvb_captured_length(tvb);
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}
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proto_tree_add_item(artemis_tree, hf_artemis_type, tvb, 4, 1, ENC_BIG_ENDIAN);
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proto_tree_add_item(artemis_tree, hf_artemis_channel, tvb, 5, 8, ENC_BIG_ENDIAN);
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proto_tree_add_item(artemis_tree, hf_artemis_buffer, tvb, 13, length-9, ENC_NA);
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return tvb_captured_length(tvb);
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}
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static int
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dissect_artemis(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree _U_, void *data _U_)
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{
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col_set_str(pinfo->cinfo, COL_PROTOCOL, "ARTEMIS");
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/* Clear out stuff in the info column */
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col_clear(pinfo->cinfo, COL_INFO);
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/* fixed_len = 4(len) + 1(type) + 8(channel) */
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tcp_dissect_pdus(tvb, pinfo, tree, TRUE, 4, get_artemis_message_len,
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dissect_artemis_frame, data);
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return tvb_captured_length(tvb);
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}
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void
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proto_register_artemis(void)
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{
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static hf_register_info hf[] = {
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{&hf_artemis_len, {
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"Length", "artemis.length",
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FT_UINT32, BASE_DEC, NULL, 0x0,
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"Length of the frame", HFILL}},
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{&hf_artemis_type, {
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"Type", "artemis.type",
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FT_UINT8, BASE_DEC, NULL, 0x0,
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"Type of the frame", HFILL}},
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{&hf_artemis_channel, {
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"Channel", "artemis.channel",
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FT_UINT64, BASE_DEC, NULL, 0x0,
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"Channel ID of the frame", HFILL}},
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{&hf_artemis_buffer, {
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"Buffer", "artemis.buffer",
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FT_BYTES, BASE_NONE, NULL, 0,
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"Binary buffer", HFILL}}
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};
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static gint *ett [] = {
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&ett_artemis
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};
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static ei_register_info ei[] = {
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{ &ei_artemis_len_short, { "artemis.len_short", PI_PROTOCOL, PI_ERROR, "Frame length is too short", EXPFILL }}
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};
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expert_module_t* expert_artemis;
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proto_artemis = proto_register_protocol ( "Artemis Core Protocol", "Artemis", "artemis" );
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artemis_tcp_handle = register_dissector("artemis", dissect_artemis, proto_artemis);
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proto_register_field_array(proto_artemis, hf, array_length(hf));
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proto_register_subtree_array(ett, array_length(ett));
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expert_artemis = expert_register_protocol(proto_artemis);
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expert_register_field_array(expert_artemis, ei, array_length(ei));
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}
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void
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proto_reg_handoff_artemis(void)
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{
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static gboolean initialize = FALSE;
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if (!initialize) {
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/* Register TCP port for dissection */
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dissector_add_uint_with_preference("tcp.port", ARTEMIS_PORT, artemis_tcp_handle);
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initialize = TRUE;
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}
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}
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/*
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* Editor modelines - https://www.wireshark.org/tools/modelines.html
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*
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* Local variables:
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* c-basic-offset: 4
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* tab-width: 8
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* indent-tabs-mode: nil
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* End:
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*
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* vi: set shiftwidth=4 tabstop=8 expandtab:
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* :indentSize=4:tabSize=8:noTabs=true:
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*/
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