forked from osmocom/wireshark
![Dario Lombardo](/assets/img/avatar_default.png)
Change-Id: I92c94448e6641716d03158a5f332c8b53709423a Reviewed-on: https://code.wireshark.org/review/25756 Petri-Dish: Dario Lombardo <lomato@gmail.com> Reviewed-by: Anders Broman <a.broman58@gmail.com>
231 lines
9 KiB
C
231 lines
9 KiB
C
/* packet-scriptingservice.c
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* Routines for the Scripting Service Protocol, a load distribution application
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* of the rsplib RSerPool implementation
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* http://tdrwww.iem.uni-due.de/dreibholz/rserpool/
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*
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* Copyright 2008-2010 by Thomas Dreibholz <dreibh [AT] iem.uni-due.de>
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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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#include "config.h"
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#include <epan/packet.h>
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#include <epan/sctpppids.h>
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#define SSPROTOCOL_PAYLOAD_PROTOCOL_ID_LEGACY 0x29097604
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void proto_register_ssprotocol(void);
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void proto_reg_handoff_ssprotocol(void);
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/* Initialize the protocol and registered fields */
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static int proto_ssprotocol = -1;
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static int hf_message_type = -1;
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static int hf_message_flags = -1;
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static int hf_message_length = -1;
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static int hf_message_status = -1;
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static int hf_message_data = -1;
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static int hf_message_reason = -1;
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static int hf_message_info = -1;
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static int hf_message_hash = -1;
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static int hf_environment_u_bit = -1;
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/* Initialize the subtree pointers */
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static gint ett_ssprotocol = -1;
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static gint ett_environment_flags = -1;
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/* Dissectors for messages. This is specific to ScriptingServiceProtocol */
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#define MESSAGE_TYPE_LENGTH 1
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#define MESSAGE_FLAGS_LENGTH 1
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#define MESSAGE_LENGTH_LENGTH 2
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#define MESSAGE_STATUS_LENGTH 4
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#define MESSAGE_NOTRDY_REASON_LENGTH 4
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#define MESSAGE_ENVIRON_HASH_LENGTH 20
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#define MESSAGE_TYPE_OFFSET 0
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#define MESSAGE_FLAGS_OFFSET (MESSAGE_TYPE_OFFSET + MESSAGE_TYPE_LENGTH)
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#define MESSAGE_LENGTH_OFFSET (MESSAGE_FLAGS_OFFSET + MESSAGE_FLAGS_LENGTH)
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#define MESSAGE_STATUS_OFFSET (MESSAGE_LENGTH_OFFSET + MESSAGE_LENGTH_LENGTH)
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#define MESSAGE_DATA_OFFSET (MESSAGE_LENGTH_OFFSET + MESSAGE_LENGTH_LENGTH)
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#define MESSAGE_RDY_INFO_OFFSET (MESSAGE_LENGTH_OFFSET + MESSAGE_LENGTH_LENGTH)
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#define MESSAGE_NOTRDY_REASON_OFFSET (MESSAGE_LENGTH_OFFSET + MESSAGE_LENGTH_LENGTH)
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#define MESSAGE_NOTRDY_INFO_OFFSET (MESSAGE_NOTRDY_REASON_OFFSET + MESSAGE_NOTRDY_REASON_LENGTH)
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#define MESSAGE_ENVIRON_HASH_OFFSET (MESSAGE_LENGTH_OFFSET + MESSAGE_LENGTH_LENGTH)
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#define SS_NOTREADY_TYPE 0
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#define SS_READY_TYPE 1
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#define SS_UPLOAD_TYPE 2
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#define SS_DOWNLOAD_TYPE 3
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#define SS_KEEPALIVE_TYPE 4
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#define SS_KEEPALIVE_ACK_TYPE 5
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#define SS_STATUS_TYPE 6
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#define SS_ENVIRONMENT_TYPE 7
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static const value_string message_type_values[] = {
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{ SS_NOTREADY_TYPE, "Not Ready" },
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{ SS_READY_TYPE, "Ready" },
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{ SS_UPLOAD_TYPE, "Upload" },
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{ SS_DOWNLOAD_TYPE, "Download" },
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{ SS_KEEPALIVE_TYPE, "Keep-Alive" },
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{ SS_KEEPALIVE_ACK_TYPE, "Keep-Alive Ack" },
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{ SS_STATUS_TYPE, "Status" },
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{ SS_ENVIRONMENT_TYPE, "Environment" },
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{ 0, NULL }
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};
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static const value_string notrdy_reason_values[] = {
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{ 0x00000001, "Fully Loaded" },
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{ 0x00000002, "Out of Resources" },
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{ 0, NULL }
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};
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#define SSP_ENVIRONMENT_U_BIT 0x01
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static const true_false_string environment_u_bit = {
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"Upload needed",
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"Upload not needed"
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};
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static guint
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dissect_ssprotocol_message(tvbuff_t *message_tvb, packet_info *pinfo, proto_tree *ssprotocol_tree)
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{
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proto_item* flags_item;
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proto_tree* flags_tree;
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guint8 type;
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guint16 data_length;
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guint16 info_length;
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guint total_length;
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type = tvb_get_guint8(message_tvb, MESSAGE_TYPE_OFFSET);
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col_add_fstr(pinfo->cinfo, COL_INFO, "%s ", val_to_str(type, message_type_values, "Unknown SSP type: %u"));
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proto_tree_add_item(ssprotocol_tree, hf_message_type, message_tvb, MESSAGE_TYPE_OFFSET, MESSAGE_TYPE_LENGTH, ENC_BIG_ENDIAN);
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flags_item = proto_tree_add_item(ssprotocol_tree, hf_message_flags, message_tvb, MESSAGE_FLAGS_OFFSET, MESSAGE_FLAGS_LENGTH, ENC_BIG_ENDIAN);
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proto_tree_add_item(ssprotocol_tree, hf_message_length, message_tvb, MESSAGE_LENGTH_OFFSET, MESSAGE_LENGTH_LENGTH, ENC_BIG_ENDIAN);
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total_length = MESSAGE_LENGTH_OFFSET + MESSAGE_LENGTH_LENGTH;
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switch (type) {
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case SS_KEEPALIVE_ACK_TYPE:
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case SS_STATUS_TYPE:
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info_length = tvb_get_ntohs(message_tvb, MESSAGE_LENGTH_OFFSET) - MESSAGE_STATUS_OFFSET;
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if (info_length == MESSAGE_STATUS_LENGTH) {
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proto_tree_add_item(ssprotocol_tree, hf_message_status, message_tvb, MESSAGE_STATUS_OFFSET, MESSAGE_STATUS_LENGTH, ENC_BIG_ENDIAN);
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total_length += MESSAGE_STATUS_LENGTH;
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}
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break;
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case SS_UPLOAD_TYPE:
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case SS_DOWNLOAD_TYPE:
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data_length = tvb_get_ntohs(message_tvb, MESSAGE_LENGTH_OFFSET) - MESSAGE_DATA_OFFSET;
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if (data_length > 0) {
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proto_tree_add_item(ssprotocol_tree, hf_message_data, message_tvb, MESSAGE_DATA_OFFSET, data_length, ENC_NA);
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total_length += data_length;
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}
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break;
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case SS_READY_TYPE:
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info_length = tvb_get_ntohs(message_tvb, MESSAGE_LENGTH_OFFSET) - MESSAGE_RDY_INFO_OFFSET;
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if (info_length > 0) {
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proto_tree_add_item(ssprotocol_tree, hf_message_info, message_tvb, MESSAGE_RDY_INFO_OFFSET, info_length, ENC_ASCII|ENC_NA);
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total_length += info_length;
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}
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break;
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case SS_NOTREADY_TYPE:
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info_length = tvb_get_ntohs(message_tvb, MESSAGE_LENGTH_OFFSET) - MESSAGE_NOTRDY_INFO_OFFSET;
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if (info_length > 0) {
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proto_tree_add_item(ssprotocol_tree, hf_message_reason, message_tvb, MESSAGE_NOTRDY_REASON_OFFSET, MESSAGE_NOTRDY_REASON_LENGTH, ENC_BIG_ENDIAN);
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proto_tree_add_item(ssprotocol_tree, hf_message_info, message_tvb, MESSAGE_NOTRDY_INFO_OFFSET, info_length, ENC_ASCII|ENC_NA);
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total_length += info_length;
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}
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break;
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case SS_ENVIRONMENT_TYPE:
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flags_tree = proto_item_add_subtree(flags_item, ett_environment_flags);
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proto_tree_add_item(flags_tree, hf_environment_u_bit, message_tvb, MESSAGE_FLAGS_OFFSET, MESSAGE_FLAGS_LENGTH, ENC_BIG_ENDIAN);
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proto_tree_add_item(ssprotocol_tree, hf_message_hash, message_tvb, MESSAGE_ENVIRON_HASH_OFFSET, MESSAGE_ENVIRON_HASH_LENGTH, ENC_NA);
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break;
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default:
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break;
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}
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return total_length;
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}
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static int
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dissect_ssprotocol(tvbuff_t *message_tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
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{
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proto_item *ssprotocol_item;
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proto_tree *ssprotocol_tree;
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col_set_str(pinfo->cinfo, COL_PROTOCOL, "SSP");
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/* create the ssprotocol protocol tree */
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ssprotocol_item = proto_tree_add_item(tree, proto_ssprotocol, message_tvb, 0, -1, ENC_NA);
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ssprotocol_tree = proto_item_add_subtree(ssprotocol_item, ett_ssprotocol);
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/* dissect the message */
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return dissect_ssprotocol_message(message_tvb, pinfo, ssprotocol_tree);
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}
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/* Register the protocol */
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void
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proto_register_ssprotocol(void)
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{
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/* Setup list of header fields */
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static hf_register_info hf[] = {
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{ &hf_message_type, { "Type", "ssp.message_type", FT_UINT8, BASE_DEC, VALS(message_type_values), 0x0, NULL, HFILL } },
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{ &hf_message_flags, { "Flags", "ssp.message_flags", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL } },
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{ &hf_message_length, { "Length", "ssp.message_length", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL } },
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{ &hf_message_status, { "Status", "ssp.message_status", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL } },
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{ &hf_message_reason, { "Reason", "ssp.message_reason", FT_UINT32, BASE_DEC, VALS(notrdy_reason_values), 0x0, NULL, HFILL } },
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{ &hf_message_info, { "Info", "ssp.message_info", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL } },
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{ &hf_message_data, { "Data", "ssp.message_data", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL } },
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{ &hf_message_hash, { "Hash", "ssp.message_hash", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL } },
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{ &hf_environment_u_bit, { "U-Bit", "ssp.environment_u_bit", FT_BOOLEAN, 8,TFS(&environment_u_bit), SSP_ENVIRONMENT_U_BIT, NULL, HFILL } }
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};
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/* Setup protocol subtree array */
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static gint *ett[] = {
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&ett_ssprotocol,
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&ett_environment_flags
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};
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/* Register the protocol name and description */
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proto_ssprotocol = proto_register_protocol("Scripting Service Protocol", "SSP", "ssp");
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/* Required function calls to register the header fields and subtrees used */
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proto_register_field_array(proto_ssprotocol, hf, array_length(hf));
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proto_register_subtree_array(ett, array_length(ett));
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}
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void
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proto_reg_handoff_ssprotocol(void)
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{
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dissector_handle_t ssprotocol_handle;
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ssprotocol_handle = create_dissector_handle(dissect_ssprotocol, proto_ssprotocol);
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dissector_add_uint("sctp.ppi", SSPROTOCOL_PAYLOAD_PROTOCOL_ID_LEGACY, ssprotocol_handle);
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dissector_add_uint("sctp.ppi", SSP_PAYLOAD_PROTOCOL_ID, ssprotocol_handle);
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}
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/*
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* Editor modelines - http://www.wireshark.org/tools/modelines.html
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*
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* Local Variables:
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* c-basic-offset: 2
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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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* ex: set shiftwidth=2 tabstop=8 expandtab:
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* :indentSize=2:tabSize=8:noTabs=true:
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*/
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