1 /* packet-scriptingservice.c
2 * Routines for the Scripting Service Protocol, a load distribution application
3 * of the rsplib RSerPool implementation
4 * http://tdrwww.iem.uni-due.de/dreibholz/rserpool/
6 * Copyright 2008-2010 by Thomas Dreibholz <dreibh [AT] iem.uni-due.de>
10 * Wireshark - Network traffic analyzer
11 * By Gerald Combs <gerald@wireshark.org>
12 * Copyright 1998 Gerald Combs
14 * This program is free software; you can redistribute it and/or
15 * modify it under the terms of the GNU General Public License
16 * as published by the Free Software Foundation; either version 2
17 * of the License, or (at your option) any later version.
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software
26 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
33 #include <epan/packet.h>
36 #define SSPROTOCOL_PAYLOAD_PROTOCOL_ID 0x29097604
39 /* Initialize the protocol and registered fields */
40 static int proto_ssprotocol = -1;
41 static int hf_message_type = -1;
42 static int hf_message_flags = -1;
43 static int hf_message_length = -1;
44 static int hf_message_status = -1;
45 static int hf_message_data = -1;
46 static int hf_message_reason = -1;
47 static int hf_message_info = -1;
48 static int hf_message_hash = -1;
49 static int hf_environment_u_bit = -1;
51 /* Initialize the subtree pointers */
52 static gint ett_ssprotocol = -1;
53 static gint ett_environment_flags = -1;
56 dissect_ssprotocol_message(tvbuff_t *, packet_info *, proto_tree *);
59 /* Dissectors for messages. This is specific to ScriptingServiceProtocol */
60 #define MESSAGE_TYPE_LENGTH 1
61 #define MESSAGE_FLAGS_LENGTH 1
62 #define MESSAGE_LENGTH_LENGTH 2
63 #define MESSAGE_STATUS_LENGTH 4
64 #define MESSAGE_NOTRDY_REASON_LENGTH 4
65 #define MESSAGE_ENVIRON_HASH_LENGTH 20
67 #define MESSAGE_TYPE_OFFSET 0
68 #define MESSAGE_FLAGS_OFFSET (MESSAGE_TYPE_OFFSET + MESSAGE_TYPE_LENGTH)
69 #define MESSAGE_LENGTH_OFFSET (MESSAGE_FLAGS_OFFSET + MESSAGE_FLAGS_LENGTH)
70 #define MESSAGE_STATUS_OFFSET (MESSAGE_LENGTH_OFFSET + MESSAGE_LENGTH_LENGTH)
71 #define MESSAGE_DATA_OFFSET (MESSAGE_LENGTH_OFFSET + MESSAGE_LENGTH_LENGTH)
72 #define MESSAGE_RDY_INFO_OFFSET (MESSAGE_LENGTH_OFFSET + MESSAGE_LENGTH_LENGTH)
73 #define MESSAGE_NOTRDY_REASON_OFFSET (MESSAGE_LENGTH_OFFSET + MESSAGE_LENGTH_LENGTH)
74 #define MESSAGE_NOTRDY_INFO_OFFSET (MESSAGE_NOTRDY_REASON_OFFSET + MESSAGE_NOTRDY_REASON_LENGTH)
75 #define MESSAGE_ENVIRON_HASH_OFFSET (MESSAGE_LENGTH_OFFSET + MESSAGE_LENGTH_LENGTH)
78 #define SS_NOTREADY_TYPE 0
79 #define SS_READY_TYPE 1
80 #define SS_UPLOAD_TYPE 2
81 #define SS_DOWNLOAD_TYPE 3
82 #define SS_KEEPALIVE_TYPE 4
83 #define SS_KEEPALIVE_ACK_TYPE 5
84 #define SS_STATUS_TYPE 6
85 #define SS_ENVIRONMENT_TYPE 7
88 static const value_string message_type_values[] = {
89 { SS_NOTREADY_TYPE, "Not Ready" },
90 { SS_READY_TYPE, "Ready" },
91 { SS_UPLOAD_TYPE, "Upload" },
92 { SS_DOWNLOAD_TYPE, "Download" },
93 { SS_KEEPALIVE_TYPE, "Keep-Alive" },
94 { SS_KEEPALIVE_ACK_TYPE, "Keep-Alive Ack" },
95 { SS_STATUS_TYPE, "Status" },
96 { SS_ENVIRONMENT_TYPE, "Environment" },
101 static const value_string notrdy_reason_values[] = {
102 { 0x00000001, "Fully Loaded" },
103 { 0x00000002, "Out of Resources" },
108 #define SSP_ENVIRONMENT_U_BIT 0x01
109 static const true_false_string environment_u_bit = {
116 dissect_ssprotocol_message(tvbuff_t *message_tvb, packet_info *pinfo, proto_tree *ssprotocol_tree)
118 proto_item* flags_item;
119 proto_tree* flags_tree;
125 type = tvb_get_guint8(message_tvb, MESSAGE_TYPE_OFFSET);
126 if (pinfo && (check_col(pinfo->cinfo, COL_INFO))) {
127 col_add_fstr(pinfo->cinfo, COL_INFO, "%s ", val_to_str(type, message_type_values, "Unknown SSP type: %u"));
129 proto_tree_add_item(ssprotocol_tree, hf_message_type, message_tvb, MESSAGE_TYPE_OFFSET, MESSAGE_TYPE_LENGTH, FALSE);
130 flags_item = proto_tree_add_item(ssprotocol_tree, hf_message_flags, message_tvb, MESSAGE_FLAGS_OFFSET, MESSAGE_FLAGS_LENGTH, FALSE);
131 proto_tree_add_item(ssprotocol_tree, hf_message_length, message_tvb, MESSAGE_LENGTH_OFFSET, MESSAGE_LENGTH_LENGTH, FALSE);
132 total_length = MESSAGE_LENGTH_OFFSET + MESSAGE_LENGTH_LENGTH;
134 case SS_KEEPALIVE_ACK_TYPE:
136 info_length = tvb_get_ntohs(message_tvb, MESSAGE_LENGTH_OFFSET) - MESSAGE_STATUS_OFFSET;
137 if (info_length == MESSAGE_STATUS_LENGTH) {
138 proto_tree_add_item(ssprotocol_tree, hf_message_status, message_tvb, MESSAGE_STATUS_OFFSET, MESSAGE_STATUS_LENGTH, FALSE);
139 total_length += MESSAGE_STATUS_LENGTH;
143 case SS_DOWNLOAD_TYPE:
144 data_length = tvb_get_ntohs(message_tvb, MESSAGE_LENGTH_OFFSET) - MESSAGE_DATA_OFFSET;
145 if (data_length > 0) {
146 proto_tree_add_item(ssprotocol_tree, hf_message_data, message_tvb, MESSAGE_DATA_OFFSET, data_length, FALSE);
147 total_length += data_length;
151 info_length = tvb_get_ntohs(message_tvb, MESSAGE_LENGTH_OFFSET) - MESSAGE_RDY_INFO_OFFSET;
152 if (info_length > 0) {
153 proto_tree_add_item(ssprotocol_tree, hf_message_info, message_tvb, MESSAGE_RDY_INFO_OFFSET, info_length, FALSE);
154 total_length += info_length;
157 case SS_NOTREADY_TYPE:
158 info_length = tvb_get_ntohs(message_tvb, MESSAGE_LENGTH_OFFSET) - MESSAGE_NOTRDY_INFO_OFFSET;
159 if (info_length > 0) {
160 proto_tree_add_item(ssprotocol_tree, hf_message_reason, message_tvb, MESSAGE_NOTRDY_REASON_OFFSET, MESSAGE_NOTRDY_REASON_LENGTH, FALSE);
161 proto_tree_add_item(ssprotocol_tree, hf_message_info, message_tvb, MESSAGE_NOTRDY_INFO_OFFSET, info_length, FALSE);
162 total_length += info_length;
165 case SS_ENVIRONMENT_TYPE:
166 flags_tree = proto_item_add_subtree(flags_item, ett_environment_flags);
167 proto_tree_add_item(flags_tree, hf_environment_u_bit, message_tvb, MESSAGE_FLAGS_OFFSET, MESSAGE_FLAGS_LENGTH, ENC_BIG_ENDIAN);
168 proto_tree_add_item(ssprotocol_tree, hf_message_hash, message_tvb, MESSAGE_ENVIRON_HASH_OFFSET, MESSAGE_ENVIRON_HASH_LENGTH, FALSE);
179 dissect_ssprotocol(tvbuff_t *message_tvb, packet_info *pinfo, proto_tree *tree)
181 proto_item *ssprotocol_item;
182 proto_tree *ssprotocol_tree;
184 /* pinfo is NULL only if dissect_ssprotocol_message is called from dissect_error cause */
186 col_set_str(pinfo->cinfo, COL_PROTOCOL, "SSP");
188 /* In the interest of speed, if "tree" is NULL, don't do any work not
189 necessary to generate protocol tree items. */
191 /* create the ssprotocol protocol tree */
192 ssprotocol_item = proto_tree_add_item(tree, proto_ssprotocol, message_tvb, 0, -1, FALSE);
193 ssprotocol_tree = proto_item_add_subtree(ssprotocol_item, ett_ssprotocol);
195 ssprotocol_tree = NULL;
197 /* dissect the message */
198 return dissect_ssprotocol_message(message_tvb, pinfo, ssprotocol_tree);
202 /* Register the protocol */
204 proto_register_ssprotocol(void)
207 /* Setup list of header fields */
208 static hf_register_info hf[] = {
209 { &hf_message_type, { "Type", "ssprotocol.message_type", FT_UINT8, BASE_DEC, VALS(message_type_values), 0x0, NULL, HFILL } },
210 { &hf_message_flags, { "Flags", "ssprotocol.message_flags", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL } },
211 { &hf_message_length, { "Length", "ssprotocol.message_length", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL } },
212 { &hf_message_status, { "Status", "ssprotocol.message_status", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL } },
213 { &hf_message_reason, { "Reason", "ssprotocol.message_reason", FT_UINT32, BASE_DEC, VALS(notrdy_reason_values), 0x0, NULL, HFILL } },
214 { &hf_message_info, { "Info", "ssprotocol.message_info", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL } },
215 { &hf_message_data, { "Data", "ssprotocol.message_data", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL } },
216 { &hf_message_hash, { "Hash", "ssprotocol.message_hash", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL } },
217 { &hf_environment_u_bit, { "U-Bit", "ssprotocol.environment_u_bit", FT_BOOLEAN, 8,TFS(&environment_u_bit), SSP_ENVIRONMENT_U_BIT, NULL, HFILL } }
220 /* Setup protocol subtree array */
221 static gint *ett[] = {
223 &ett_environment_flags
226 /* Register the protocol name and description */
227 proto_ssprotocol = proto_register_protocol("Scripting Service Protocol", "SSP", "ssp");
229 /* Required function calls to register the header fields and subtrees used */
230 proto_register_field_array(proto_ssprotocol, hf, array_length(hf));
231 proto_register_subtree_array(ett, array_length(ett));
235 proto_reg_handoff_ssprotocol(void)
237 dissector_handle_t ssprotocol_handle;
239 ssprotocol_handle = new_create_dissector_handle(dissect_ssprotocol, proto_ssprotocol);
240 dissector_add("sctp.ppi", SSPROTOCOL_PAYLOAD_PROTOCOL_ID, ssprotocol_handle);