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-rw-r--r--epan/dissectors/packet-forces.c898
1 files changed, 898 insertions, 0 deletions
diff --git a/epan/dissectors/packet-forces.c b/epan/dissectors/packet-forces.c
new file mode 100644
index 00000000..d395e378
--- /dev/null
+++ b/epan/dissectors/packet-forces.c
@@ -0,0 +1,898 @@
+/* packet-forces.c
+ * RFC 5810
+ * Routines for dissecting IETF ForCES protocol layer messages.Now support the following TML types:TCP+UDP,SCTP.
+ * Copyright 2009, NDSC & Zhejiang Gongshang University,Fenggen Jia <fgjia@mail.zjgsu.edu.cn or fenggen.jia@gmail.com>
+ *
+ * Wireshark - Network traffic analyzer
+ * By Gerald Combs <gerald@wireshark.org>
+ * Copyright 1998 Gerald Combs
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#include "config.h"
+
+#include <epan/packet.h>
+#include <epan/prefs.h>
+#include <epan/expert.h>
+
+void proto_register_forces(void);
+void proto_reg_handoff_forces(void);
+
+static dissector_handle_t forces_handle_tcp, forces_handle;
+
+static dissector_handle_t ip_handle;
+
+/* Initialize the ForCES protocol and registered fields */
+static int proto_forces = -1;
+
+/*Main header*/
+static int hf_forces_version = -1;
+static int hf_forces_rsvd = -1;
+static int hf_forces_messagetype = -1;
+static int hf_forces_sid = -1;
+static int hf_forces_did = -1;
+static int hf_forces_correlator = -1;
+static int hf_forces_length = -1;
+/*Flags*/
+static int hf_forces_flags= -1;
+static int hf_forces_flags_ack= -1;
+static int hf_forces_flags_pri= -1;
+static int hf_forces_flags_rsrvd= -1;
+static int hf_forces_flags_em= -1;
+static int hf_forces_flags_at= -1;
+static int hf_forces_flags_tp= -1;
+static int hf_forces_flags_reserved = -1;
+
+static int hf_forces_tlv_type = -1;
+static int hf_forces_tlv_length = -1;
+
+/*Initiation of LFBSelect TLV*/
+static int hf_forces_lfbselect_tlv_type_lfb_classid = -1;
+static int hf_forces_lfbselect_tlv_type_lfb_instanceid = -1;
+
+/*Initiation of Operation TLV*/
+static int hf_forces_lfbselect_tlv_type_operation_type = -1;
+static int hf_forces_lfbselect_tlv_type_operation_length = -1;
+static int hf_forces_lfbselect_tlv_type_operation_path_type = -1;
+static int hf_forces_lfbselect_tlv_type_operation_path_length = -1;
+static int hf_forces_lfbselect_tlv_type_operation_path_flags = -1;
+static int hf_forces_lfbselect_tlv_type_operation_path_flags_selector = -1;
+static int hf_forces_lfbselect_tlv_type_operation_path_flags_reserved = -1;
+static int hf_forces_lfbselect_tlv_type_operation_path_IDcount = -1;
+static int hf_forces_lfbselect_tlv_type_operation_path_IDs = -1;
+static int hf_forces_lfbselect_tlv_type_operation_path_data = -1;
+
+/*Initiation of Redirect TLV*/
+static int hf_forces_redirect_tlv_meta_data_tlv_type = -1;
+static int hf_forces_redirect_tlv_meta_data_tlv_length = -1;
+static int hf_forces_redirect_tlv_meta_data_tlv_meta_data_ilv = -1;
+static int hf_forces_redirect_tlv_meta_data_tlv_meta_data_ilv_id = -1;
+static int hf_forces_redirect_tlv_meta_data_tlv_meta_data_ilv_length = -1;
+static int hf_forces_redirect_tlv_redirect_data_tlv_type = -1;
+static int hf_forces_redirect_tlv_redirect_data_tlv_length = -1;
+
+/*Initiation of ASResult TLV*/
+static int hf_forces_asresult_association_setup_result = -1;
+
+/*Initiation of ASTreason TLV*/
+static int hf_forces_astreason_tlv_teardown_reason = -1;
+
+/*Main TLV may be unknown*/
+static int hf_forces_unknown_tlv = -1;
+
+/*Message Types */
+#define AssociationSetup 0x01
+#define AssociationTeardown 0x02
+#define Config 0x03
+#define Query 0x04
+#define EventNotification 0x05
+#define PacketRedirect 0x06
+#define Heartbeat 0x0F
+#define AssociationSetupResponse 0x11
+#define ConfigResponse 0x13
+#define QueryResponse 0x14
+
+/*TLV Types*/
+#define Reserved 0x0000
+#define REDIRECT_TLV 0x0001
+#define ASResult_TLV 0x0010
+#define ASTreason_TLV 0x0011
+#define LFBselect_TLV 0x1000
+#define PATH_DATA_TLV 0x0110
+#define KEYINFO_TLV 0x0111
+#define FULLDATA_TLV 0x0112
+#define SPARSEDATA_TLV 0x0113
+#define RESULT_TLV 0x0114
+#define METADATA_TLV 0x0115
+#define REDIRECTDATA_TLV 0x0116
+
+/*Operation Type*/
+#define Reserved 0x0000
+#define SET 0x0001
+#define SET_PROP 0x0002
+#define SET_RESPONSE 0x0003
+#define SET_PROP_RESPONSE 0x0004
+#define DEL 0x0005
+#define DEL_RESPONSE 0x0006
+#define GET 0x0007
+#define GET_PROP 0x0008
+#define GET_RESPONSE 0x0009
+#define GET_PROP_RESPONSE 0x000A
+#define REPORT 0x000B
+#define COMMIT 0x000C
+#define COMMIT_RESPONSE 0x000D
+#define TRCOMP 0x000E
+
+#define FLAG_SELECTOR 0x8000
+
+#define ForCES_HEADER_LENGTH 24
+#define TLV_TL_LENGTH 4 /*Type+length*/
+#define MIN_IP_HEADER_LENGTH 20
+
+/*For TCP+UDP TML. There are two bytes added to the ForCES PL message, not strictly combine to the ForCES protocol.
+ For other type TMLs,no need to add these 2 bytes.*/
+#define TCP_UDP_TML_FOCES_MESSAGE_OFFSET_TCP 2
+
+/*SCTP TML*/
+static guint forces_alternate_sctp_high_prio_channel_port = 0;
+static guint forces_alternate_sctp_med_prio_channel_port = 0;
+static guint forces_alternate_sctp_low_prio_channel_port = 0;
+
+/*Initialize the subtree pointers*/
+static gint ett_forces = -1;
+static gint ett_forces_main_header = -1;
+static gint ett_forces_flags = -1;
+static gint ett_forces_tlv = -1;
+static gint ett_forces_lfbselect_tlv_type = -1;
+
+/*Operation TLV subtree*/
+static gint ett_forces_lfbselect_tlv_type_operation = -1;
+static gint ett_forces_lfbselect_tlv_type_operation_path = -1;
+static gint ett_forces_lfbselect_tlv_type_operation_path_data = -1;
+static gint ett_forces_lfbselect_tlv_type_operation_path_data_path = -1;
+static gint ett_forces_path_data_tlv = -1;
+static gint ett_forces_path_data_tlv_flags = -1;
+
+/*Selector subtree*/
+static gint ett_forces_lfbselect_tlv_type_operation_path_selector = -1;
+
+/*Redirect TLV subtree*/
+static gint ett_forces_redirect_tlv_type = -1;
+static gint ett_forces_redirect_tlv_meta_data_tlv = -1;
+static gint ett_forces_redirect_tlv_meta_data_tlv_meta_data_ilv = -1;
+static gint ett_forces_redirect_tlv_redirect_data_tlv = -1;
+
+/*ASResult TLV subtree*/
+static gint ett_forces_asresult_tlv = -1;
+
+/*ASReason subtree*/
+static gint ett_forces_astreason_tlv = -1;
+
+/*Main_TLV unknown subtree*/
+static gint ett_forces_unknown_tlv = -1;
+
+
+static expert_field ei_forces_length = EI_INIT;
+static expert_field ei_forces_tlv_type = EI_INIT;
+static expert_field ei_forces_tlv_length = EI_INIT;
+static expert_field ei_forces_lfbselect_tlv_type_operation_path_length = EI_INIT;
+static expert_field ei_forces_lfbselect_tlv_type_operation_type = EI_INIT;
+static expert_field ei_forces_redirect_tlv_redirect_data_tlv_length = EI_INIT;
+
+/*ACK values and the strings to be displayed*/
+static const value_string main_header_flags_ack_vals[] = {
+ { 0x0, "NoACK" },
+ { 0x1, "SuccessACK" },
+ { 0x2, "FailureACK" },
+ { 0x3, "AlwaysACK" },
+ { 0, NULL}
+};
+
+/*Execution mode(EM) values and the strings to be displayed*/
+static const value_string main_header_flags_em_vals[] = {
+ { 0x0, "Reserved" },
+ { 0x1, "Execute-all-or-none" },
+ { 0x2, "Execute-until-failure" },
+ { 0x3, "Continue-execute-on-failure" },
+ { 0, NULL}
+};
+
+/*Transaction Phase values and the strings to be displayed*/
+static const value_string main_header_flags_tp_vals[] = {
+ { 0x0, "SOT (Start of Transaction)" },
+ { 0x1, "MOT (Middle of Transaction)" },
+ { 0x2, "EOT (End of Transaction)" },
+ { 0x3, "ABT (Abort)" },
+ { 0, NULL}
+};
+
+/*Atomic Transaction(AT) values and the strings to be displayed*/
+static const value_string main_header_flags_at_vals[] = {
+ { 0x0, "Stand-alone Message"},
+ { 0x1, "2PC Transaction Message"},
+ { 0, NULL}
+};
+
+/*Association Setup Result*/
+static const value_string association_setup_result_at_vals[] = {
+ { 0x0, "success"},
+ { 0x1, "FE ID invalid"},
+ { 0x2, "permission denied"},
+ { 0, NULL},
+};
+
+/*Teardown Reason*/
+static const value_string teardown_reason_at_vals[] = {
+ { 0x0, "normal-teardown by administrator"},
+ { 0x1, "error - loss of heartbeats"},
+ { 0x2, "error - out of bandwidth"},
+ { 0x3, "error - out of memory"},
+ { 0x4, "error - application crash"},
+ { 0x255, "error - other or unspecified"},
+ { 0, NULL},
+};
+
+static const value_string message_type_vals[] = {
+ { AssociationSetup, "AssociationSetup" },
+ { AssociationTeardown, "AssociationTeardown" },
+ { Config, "Config" },
+ { Query, "Query" },
+ { EventNotification, "EventNotification" },
+ { PacketRedirect, "PacketRedirect" },
+ { Heartbeat, "Heartbeat" },
+ { AssociationSetupResponse, "AssociationSetupResponse" },
+ { ConfigResponse, "ConfigResponse" },
+ { QueryResponse, "QueryResponse" },
+ { 0, NULL},
+};
+
+static const value_string tlv_type_vals[] = {
+ { REDIRECT_TLV, "REDIRECT-TLV" },
+ { ASResult_TLV, "ASResult-TLV" },
+ { ASTreason_TLV, "ASTreason-TLV" },
+ { LFBselect_TLV, "LFBselect-TLV" },
+ { PATH_DATA_TLV, "PATH DATA-TLV" },
+ { KEYINFO_TLV, "KEYINFO-TLV" },
+ { FULLDATA_TLV, "FULLDATA-TLV" },
+ { SPARSEDATA_TLV, "SPARSEDATA-TLV" },
+ { RESULT_TLV, "RESULT-TLV" },
+ { METADATA_TLV, "METADATA-TLV" },
+ { REDIRECTDATA_TLV, "REDIRECTDATA-TLV" },
+ { 0, NULL},
+};
+
+static const value_string operation_type_vals[] = {
+ { Reserved, "Reserved" },
+ { SET, "SET" },
+ { SET_PROP, "SET-PROP" },
+ { SET_RESPONSE, "SET-RESPONSE" },
+ { SET_PROP_RESPONSE, "SET-PROP-RESPONSE" },
+ { DEL, "DEL" },
+ { DEL_RESPONSE, "DEL-RESPONSE" },
+ { GET, "GET" },
+ { GET_PROP, "GET-PROP" },
+ { GET_RESPONSE, "GET-RESPONSE" },
+ { GET_PROP_RESPONSE, "GET-PROP-RESPONSE" },
+ { REPORT, "REPORT" },
+ { COMMIT, "COMMIT" },
+ { COMMIT_RESPONSE, "COMMIT-RESPONSE" },
+ { TRCOMP, "TRCOMP" },
+ { 0, NULL},
+};
+
+static void
+dissect_path_data_tlv(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, gint offset)
+{
+ proto_item *ti, *flag_item;
+ guint length_TLV, IDcount, i;
+ guint16 type, flag;
+ proto_tree *tlv_tree, *path_data_tree, *flag_tree;
+
+ while (tvb_reported_length_remaining(tvb, offset) >= TLV_TL_LENGTH)
+ {
+ tlv_tree = proto_tree_add_subtree(tree, tvb, offset, TLV_TL_LENGTH, ett_forces_path_data_tlv, &ti, "TLV");
+
+ type = tvb_get_ntohs(tvb, offset);
+ proto_tree_add_item(tlv_tree, hf_forces_lfbselect_tlv_type_operation_path_type,
+ tvb, offset, 2, ENC_BIG_ENDIAN);
+ length_TLV = tvb_get_ntohs(tvb, offset+2);
+ proto_tree_add_item(tlv_tree, hf_forces_lfbselect_tlv_type_operation_path_length,
+ tvb, offset+2, 2, ENC_BIG_ENDIAN);
+ if (length_TLV < TLV_TL_LENGTH)
+ {
+ expert_add_info_format(pinfo, ti, &ei_forces_lfbselect_tlv_type_operation_path_length, "Bogus TLV length: %u", length_TLV);
+ break;
+ }
+ proto_item_set_len(ti, length_TLV);
+
+ if (type == PATH_DATA_TLV)
+ {
+ path_data_tree = proto_tree_add_subtree(tree, tvb, offset+TLV_TL_LENGTH, length_TLV-TLV_TL_LENGTH,
+ ett_forces_path_data_tlv, NULL, "Path Data TLV");
+
+ flag = tvb_get_ntohs(tvb, offset+TLV_TL_LENGTH);
+ flag_item = proto_tree_add_item(path_data_tree, hf_forces_lfbselect_tlv_type_operation_path_flags,
+ tvb, offset+TLV_TL_LENGTH, 2, ENC_BIG_ENDIAN);
+ flag_tree = proto_item_add_subtree(flag_item, ett_forces_path_data_tlv_flags);
+ proto_tree_add_item(flag_tree, hf_forces_lfbselect_tlv_type_operation_path_flags_selector,
+ tvb, offset+TLV_TL_LENGTH, 2, ENC_BIG_ENDIAN);
+ proto_tree_add_item(flag_tree, hf_forces_lfbselect_tlv_type_operation_path_flags_reserved,
+ tvb, offset+TLV_TL_LENGTH, 2, ENC_BIG_ENDIAN);
+
+ IDcount = tvb_get_ntohs(tvb, offset + TLV_TL_LENGTH + 2);
+ proto_tree_add_item(path_data_tree, hf_forces_lfbselect_tlv_type_operation_path_IDcount,
+ tvb, offset+TLV_TL_LENGTH+2, 2, ENC_BIG_ENDIAN);
+
+ for (i = 0; i < IDcount; i++)
+ proto_tree_add_item(path_data_tree, hf_forces_lfbselect_tlv_type_operation_path_IDs,
+ tvb, offset+TLV_TL_LENGTH+2+(i*4), 4, ENC_BIG_ENDIAN);
+ }
+ else
+ {
+ flag = 0;
+ proto_tree_add_item(tree, hf_forces_lfbselect_tlv_type_operation_path_data,
+ tvb, offset+TLV_TL_LENGTH, length_TLV-TLV_TL_LENGTH, ENC_NA);
+ }
+
+ if ((flag & FLAG_SELECTOR) == 0)
+ break;
+
+ offset += length_TLV;
+ }
+}
+
+static void
+dissect_operation_tlv(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, gint offset, gint length_count)
+{
+ proto_item *ti;
+ proto_tree *oper_tree;
+ guint type, length;
+
+ while (tvb_reported_length_remaining(tvb, offset) >= TLV_TL_LENGTH)
+ {
+ oper_tree = proto_tree_add_subtree(tree, tvb, offset, length_count,
+ ett_forces_lfbselect_tlv_type_operation, &ti, "Operation TLV");
+
+ type = tvb_get_ntohs(tvb,offset);
+ ti = proto_tree_add_item(oper_tree, hf_forces_lfbselect_tlv_type_operation_type,
+ tvb, offset, 2, ENC_BIG_ENDIAN);
+ if (try_val_to_str(type, operation_type_vals) == NULL)
+ expert_add_info_format(pinfo, ti, &ei_forces_lfbselect_tlv_type_operation_type,
+ "Bogus: ForCES Operation TLV (Type:0x%04x) is not supported", type);
+
+ proto_tree_add_item_ret_uint(oper_tree, hf_forces_lfbselect_tlv_type_operation_length,
+ tvb, offset+2, 2, ENC_BIG_ENDIAN, &length);
+
+ dissect_path_data_tlv(tvb, pinfo, oper_tree, offset+TLV_TL_LENGTH);
+ if (length == 0)
+ break;
+ offset += length;
+ }
+}
+
+static void
+dissect_lfbselecttlv(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, gint offset, gint length_count)
+{
+ guint tlv_length;
+
+ proto_tree_add_item(tree, hf_forces_lfbselect_tlv_type_lfb_classid, tvb, offset, 4, ENC_BIG_ENDIAN);
+ proto_tree_add_item(tree, hf_forces_lfbselect_tlv_type_lfb_instanceid, tvb, offset+4, 4, ENC_BIG_ENDIAN);
+
+ offset += 8;
+ while ((tvb_reported_length_remaining(tvb, offset) > TLV_TL_LENGTH) && (length_count > 12))
+ {
+ tlv_length = tvb_get_ntohs(tvb, offset+2);
+ dissect_operation_tlv(tvb, pinfo, tree, offset, tlv_length);
+ if (tlv_length == 0)
+ break;
+ offset += tlv_length;
+ }
+}
+
+static void
+dissect_redirecttlv(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, gint offset)
+{
+ proto_tree *meta_data_tree, *meta_data_ilv_tree, *redirect_data_tree;
+ gint start_offset;
+ gint length_meta, length_ilv, length_redirect;
+ proto_item *ti;
+ address src_addr, src_net_addr;
+ address dst_addr, dst_net_addr;
+
+ copy_address_shallow(&src_addr, &pinfo->src);
+ copy_address_shallow(&src_net_addr, &pinfo->net_src);
+ copy_address_shallow(&dst_addr, &pinfo->dst);
+ copy_address_shallow(&dst_net_addr, &pinfo->net_dst);
+
+ meta_data_tree = proto_tree_add_subtree(tree, tvb, offset, TLV_TL_LENGTH,
+ ett_forces_redirect_tlv_meta_data_tlv, &ti, "Meta Data TLV");
+ proto_tree_add_item(meta_data_tree, hf_forces_redirect_tlv_meta_data_tlv_type, tvb, offset, 2, ENC_BIG_ENDIAN);
+
+ length_meta = tvb_get_ntohs(tvb, offset+2);
+ proto_tree_add_uint(meta_data_tree, hf_forces_redirect_tlv_meta_data_tlv_length, tvb, offset+2, 2, length_meta);
+ proto_item_set_len(ti, length_meta);
+
+ start_offset = offset;
+ while ((tvb_reported_length_remaining(tvb, offset) >= 8) && (start_offset+length_meta > offset))
+ {
+ meta_data_ilv_tree = proto_tree_add_subtree(tree, tvb, offset, TLV_TL_LENGTH,
+ ett_forces_redirect_tlv_meta_data_tlv_meta_data_ilv, &ti, "Meta Data ILV");
+
+ proto_tree_add_item(meta_data_ilv_tree, hf_forces_redirect_tlv_meta_data_tlv_meta_data_ilv_id,
+ tvb, offset+8, 4, ENC_BIG_ENDIAN);
+ length_ilv = tvb_get_ntohl(tvb, offset+12);
+ proto_tree_add_uint(meta_data_ilv_tree, hf_forces_redirect_tlv_meta_data_tlv_meta_data_ilv_length,
+ tvb, offset+12, 4, length_ilv);
+ offset += 8;
+ if (length_ilv > 0) {
+ proto_tree_add_item(meta_data_ilv_tree, hf_forces_redirect_tlv_meta_data_tlv_meta_data_ilv,
+ tvb, offset, length_ilv, ENC_NA);
+
+ if (offset + length_ilv > offset) {
+ offset += length_ilv;
+ }
+ }
+
+ proto_item_set_len(ti, length_ilv + 8);
+ }
+
+ if (tvb_reported_length_remaining(tvb, offset) > 0)
+ {
+ redirect_data_tree = proto_tree_add_subtree(tree, tvb, offset, TLV_TL_LENGTH,
+ ett_forces_redirect_tlv_redirect_data_tlv, &ti, "Redirect Data TLV");
+
+ proto_tree_add_item(redirect_data_tree, hf_forces_redirect_tlv_redirect_data_tlv_type,
+ tvb, offset, 2, ENC_BIG_ENDIAN);
+ length_redirect = tvb_get_ntohs(tvb, offset+2);
+ proto_tree_add_uint(redirect_data_tree, hf_forces_redirect_tlv_redirect_data_tlv_length,
+ tvb, offset+2, 2, length_redirect);
+
+ if (tvb_reported_length_remaining(tvb, offset) < length_redirect)
+ {
+ expert_add_info_format(pinfo, ti, &ei_forces_redirect_tlv_redirect_data_tlv_length, "Bogus: Redirect Data TLV length (%u bytes) is wrong", length_redirect);
+ }
+ else if (length_redirect < TLV_TL_LENGTH + MIN_IP_HEADER_LENGTH)
+ {
+ expert_add_info_format(pinfo, ti, &ei_forces_redirect_tlv_redirect_data_tlv_length, "Bogus: Redirect Data TLV length (%u bytes) not big enough for IP layer", length_redirect);
+ }
+ else
+ {
+ tvbuff_t *next_tvb;
+
+ next_tvb = tvb_new_subset_length(tvb, offset+4, length_redirect-TLV_TL_LENGTH);
+ call_dissector(ip_handle, next_tvb, pinfo, redirect_data_tree);
+
+ /* Restore IP info */
+ copy_address_shallow(&pinfo->src, &src_addr);
+ copy_address_shallow(&pinfo->net_src, &src_net_addr);
+ copy_address_shallow(&pinfo->dst, &dst_addr);
+ copy_address_shallow(&pinfo->net_dst, &dst_net_addr);
+ }
+ }
+}
+
+static void
+dissect_forces(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, guint32 offset)
+{
+ /* Set up structures needed to add the protocol subtree and manage it */
+ proto_item *ti, *tlv_item;
+ proto_tree *forces_tree, *forces_flags_tree;
+ proto_tree *forces_main_header_tree, *forces_tlv_tree, *tlv_tree;
+ gint length_count;
+
+ guint8 message_type;
+ guint16 tlv_type;
+
+ /* Make entries in Protocol column and Info column on summary display */
+ col_set_str(pinfo->cinfo, COL_PROTOCOL, "ForCES");
+ col_clear(pinfo->cinfo, COL_INFO);
+
+ ti = proto_tree_add_item(tree, proto_forces, tvb, 0, -1, ENC_NA);
+ forces_tree = proto_item_add_subtree(ti, ett_forces);
+
+ forces_main_header_tree = proto_tree_add_subtree(forces_tree, tvb, 0, ForCES_HEADER_LENGTH,
+ ett_forces_main_header, NULL, "Common Header");
+
+ proto_tree_add_item(forces_main_header_tree, hf_forces_version, tvb, 0, 1, ENC_BIG_ENDIAN);
+ proto_tree_add_item(forces_main_header_tree, hf_forces_rsvd, tvb, 0, 1, ENC_BIG_ENDIAN);
+
+ message_type = tvb_get_guint8(tvb, offset+1);
+ proto_tree_add_item( forces_main_header_tree, hf_forces_messagetype, tvb, offset+1, 1, ENC_BIG_ENDIAN);
+
+ length_count = tvb_get_ntohs(tvb, offset+2) * 4; /*multiply 4 DWORD*/
+ ti = proto_tree_add_uint_format( forces_main_header_tree, hf_forces_length,
+ tvb, offset+2, 2, length_count, "Length: %u Bytes", length_count);
+ if (length_count != tvb_reported_length_remaining(tvb, offset))
+ expert_add_info_format(pinfo, ti, &ei_forces_length, "Bogus: ForCES Header length (%u bytes) is wrong),should be (%u bytes)",
+ length_count, tvb_reported_length_remaining(tvb, offset));
+ if (length_count < 24)
+ expert_add_info_format(pinfo, ti, &ei_forces_length, "Bogus: ForCES Header length (%u bytes) is less than 24bytes)", length_count);
+
+ col_add_fstr(pinfo->cinfo, COL_INFO, "Message Type: %s, Total Length: %u Bytes",
+ val_to_str(message_type, message_type_vals, "Unknown messagetype 0x%x"), length_count);
+
+ proto_tree_add_item( forces_main_header_tree, hf_forces_sid, tvb, offset+4, 4, ENC_BIG_ENDIAN);
+ proto_tree_add_item( forces_main_header_tree, hf_forces_did, tvb, offset+8, 4, ENC_BIG_ENDIAN);
+ proto_tree_add_item( forces_main_header_tree, hf_forces_correlator, tvb, offset+12, 8, ENC_BIG_ENDIAN);
+
+ /*Add flags tree*/
+ ti = proto_tree_add_item(forces_main_header_tree, hf_forces_flags, tvb, offset+20, 4, ENC_BIG_ENDIAN);
+ forces_flags_tree = proto_item_add_subtree(ti, ett_forces_flags);
+
+ proto_tree_add_item(forces_flags_tree, hf_forces_flags_ack, tvb, offset+20, 4, ENC_BIG_ENDIAN);
+ proto_tree_add_item(forces_flags_tree, hf_forces_flags_at, tvb, offset+20, 4, ENC_BIG_ENDIAN);
+ proto_tree_add_item(forces_flags_tree, hf_forces_flags_em, tvb, offset+20, 4, ENC_BIG_ENDIAN);
+ proto_tree_add_item(forces_flags_tree, hf_forces_flags_pri, tvb, offset+20, 4, ENC_BIG_ENDIAN);
+ proto_tree_add_item(forces_flags_tree, hf_forces_flags_reserved, tvb, offset+20, 4, ENC_BIG_ENDIAN);
+ proto_tree_add_item(forces_flags_tree, hf_forces_flags_rsrvd, tvb, offset+20, 4, ENC_BIG_ENDIAN);
+ proto_tree_add_item(forces_flags_tree, hf_forces_flags_tp, tvb, offset+20, 4, ENC_BIG_ENDIAN);
+
+ offset += 24;
+ while (tvb_reported_length_remaining(tvb, offset) >= TLV_TL_LENGTH)
+ {
+ forces_tlv_tree = proto_tree_add_subtree(forces_tree, tvb, offset, TLV_TL_LENGTH, ett_forces_tlv, &ti, "TLV");
+
+ tlv_type = tvb_get_ntohs(tvb, offset);
+ tlv_item = proto_tree_add_item(forces_tlv_tree, hf_forces_tlv_type, tvb, offset, 2, ENC_BIG_ENDIAN);
+ length_count = tvb_get_ntohs(tvb, offset+2) * 4;
+ proto_item_set_len(ti, length_count);
+ ti = proto_tree_add_uint(forces_tlv_tree, hf_forces_tlv_length,
+ tvb, offset+2, 2, length_count);
+ if (tvb_reported_length_remaining(tvb, offset) < length_count)
+ expert_add_info_format(pinfo, ti, &ei_forces_tlv_length, "Bogus: Main TLV length (%u bytes) is wrong", length_count);
+
+ if (length_count < TLV_TL_LENGTH)
+ {
+ expert_add_info_format(pinfo, ti, &ei_forces_tlv_length, "Bogus TLV length: %u", length_count);
+ break;
+ }
+
+ offset += TLV_TL_LENGTH;
+ length_count -= TLV_TL_LENGTH;
+
+ switch(tlv_type)
+ {
+ case LFBselect_TLV:
+ tlv_tree = proto_tree_add_subtree(forces_tlv_tree, tvb, offset, length_count,
+ ett_forces_lfbselect_tlv_type, NULL, "LFB select TLV");
+ dissect_lfbselecttlv(tvb, pinfo, tlv_tree, offset, length_count);
+ break;
+
+ case REDIRECT_TLV:
+ tlv_tree = proto_tree_add_subtree(forces_tlv_tree, tvb, offset, length_count,
+ ett_forces_redirect_tlv_type, NULL, "Redirect TLV");
+ dissect_redirecttlv(tvb, pinfo, tlv_tree, offset);
+ break;
+
+ case ASResult_TLV:
+ tlv_tree = proto_tree_add_subtree(forces_tlv_tree, tvb, offset, length_count,
+ ett_forces_asresult_tlv, NULL, "ASResult TLV");
+ proto_tree_add_item(tlv_tree, hf_forces_asresult_association_setup_result, tvb, offset, 4, ENC_BIG_ENDIAN);
+ break;
+
+ case ASTreason_TLV:
+ tlv_tree = proto_tree_add_subtree(forces_tlv_tree, tvb, offset, length_count,
+ ett_forces_astreason_tlv, NULL, "ASTreason TLV");
+ proto_tree_add_item(tlv_tree, hf_forces_astreason_tlv_teardown_reason, tvb, offset, 4, ENC_BIG_ENDIAN);
+ break;
+
+ default:
+ expert_add_info(pinfo, tlv_item, &ei_forces_tlv_type);
+ tlv_tree = proto_tree_add_subtree(forces_tlv_tree, tvb, offset, length_count,
+ ett_forces_unknown_tlv, NULL, "Unknown TLV");
+ proto_tree_add_item(tlv_tree, hf_forces_unknown_tlv, tvb, offset, length_count, ENC_NA);
+ break;
+ }
+
+ offset += length_count;
+ }
+}
+
+/* Code to actually dissect the TCP packets */
+static int
+dissect_forces_tcp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
+{
+ dissect_forces(tvb, pinfo, tree, TCP_UDP_TML_FOCES_MESSAGE_OFFSET_TCP);
+ return tvb_captured_length(tvb);
+}
+
+/* Code to actually dissect the ForCES protocol layer packets,like UDP,SCTP and others */
+static int
+dissect_forces_not_tcp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
+{
+ dissect_forces(tvb, pinfo, tree, 0);
+ return tvb_captured_length(tvb);
+}
+
+void
+proto_register_forces(void)
+{
+ module_t *forces_module;
+ expert_module_t* expert_forces;
+
+ /* Setup list of header fields See Section 1.6.1 for details*/
+ static hf_register_info hf[] = {
+ { &hf_forces_version,
+ { "Version", "forces.flags.version",
+ FT_UINT8, BASE_DEC, NULL, 0xF0, NULL, HFILL }
+ },
+ { &hf_forces_rsvd,
+ { "Rsvd", "forces.flags.rsvd",
+ FT_UINT8, BASE_DEC, NULL, 0x0F, NULL, HFILL }
+ },
+ { &hf_forces_messagetype,
+ { "Message Type", "forces.messagetype",
+ FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }
+ },
+ { &hf_forces_length,
+ { "Header Length", "forces.length",
+ FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }
+ },
+ { &hf_forces_sid,
+ { "Source ID", "forces.sid",
+ FT_IPv4, BASE_NONE, NULL, 0x0, NULL, HFILL }
+ },
+ { &hf_forces_did,
+ { "Destination ID", "forces.did",
+ FT_IPv4, BASE_NONE, NULL, 0x0, NULL, HFILL }
+ },
+ { &hf_forces_correlator,
+ { "Correlator", "forces.correlator",
+ FT_UINT64, BASE_HEX, NULL, 0x0, NULL, HFILL }
+ },
+ { &hf_forces_tlv_type,
+ { "Type", "forces.tlv.type",
+ FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }
+ },
+ { &hf_forces_tlv_length,
+ { "Length", "forces.tlv.length",
+ FT_UINT16, BASE_DEC|BASE_UNIT_STRING, &units_byte_bytes, 0x0, NULL, HFILL }
+ },
+ /*flags*/
+ { &hf_forces_flags,
+ { "Flags", "forces.Flags",
+ FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }
+ },
+ { &hf_forces_flags_ack,
+ { "ACK indicator", "forces.flags.ack",
+ FT_UINT32, BASE_DEC, VALS(main_header_flags_ack_vals), 0xC0000000, NULL, HFILL }
+ },
+ { &hf_forces_flags_pri,
+ { "Priority", "forces.flags.pri",
+ FT_UINT32, BASE_DEC, NULL, 0x38000000, NULL, HFILL }
+ },
+ { &hf_forces_flags_rsrvd,
+ { "Rsrvd", "forces.Flags",
+ FT_UINT32, BASE_DEC,NULL, 0x07000000, NULL, HFILL }
+ },
+ { &hf_forces_flags_em,
+ { "Execution mode", "forces.flags.em",
+ FT_UINT32, BASE_DEC, VALS(main_header_flags_em_vals), 0x00C00000, NULL, HFILL }
+ },
+ { &hf_forces_flags_at,
+ { "Atomic Transaction", "forces.flags.at",
+ FT_UINT32, BASE_DEC, VALS(main_header_flags_at_vals), 0x00200000, NULL, HFILL }
+ },
+ { &hf_forces_flags_tp,
+ { "Transaction phase", "forces.flags.tp",
+ FT_UINT32, BASE_DEC, VALS(main_header_flags_tp_vals), 0x00180000, NULL, HFILL }
+ },
+ { &hf_forces_flags_reserved,
+ { "Reserved", "forces.flags.reserved",
+ FT_UINT32, BASE_DEC,NULL, 0x0007ffff, NULL, HFILL }
+ },
+ /*LFBSelectTLV*/
+ { &hf_forces_lfbselect_tlv_type_lfb_classid,
+ { "Class ID", "forces.lfbselect.tlv.type.lfb.classid",
+ FT_IPv4, BASE_NONE, NULL, 0x0, NULL, HFILL }
+ },
+ { &hf_forces_lfbselect_tlv_type_lfb_instanceid,
+ { "Instance ID", "forces.fbselect.tlv.type.lfb.instanceid",
+ FT_IPv4, BASE_NONE, NULL, 0x0, NULL, HFILL }
+ },
+ /*Operation TLV*/
+ { &hf_forces_lfbselect_tlv_type_operation_type,
+ { "Type", "forces.lfbselect.tlv.type.operation.type",
+ FT_UINT16, BASE_DEC, VALS(operation_type_vals), 0x0, NULL, HFILL }
+ },
+ { &hf_forces_lfbselect_tlv_type_operation_length,
+ { "Length", "forces.lfbselect.tlv.type.operation.length",
+ FT_UINT16, BASE_DEC|BASE_UNIT_STRING, &units_byte_bytes, 0x0, NULL, HFILL }
+ },
+ { &hf_forces_lfbselect_tlv_type_operation_path_type,
+ { "Type", "forces.lfbselect.tlv.type.operation.path.type",
+ FT_UINT16, BASE_DEC, VALS(tlv_type_vals), 0x0, NULL, HFILL }
+ },
+ { &hf_forces_lfbselect_tlv_type_operation_path_length,
+ { "Length", "forces.lfbselect.tlv.type.operation.path.length",
+ FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }
+ },
+ { &hf_forces_lfbselect_tlv_type_operation_path_data,
+ { "Data", "forces.lfbselect.tlv.type.operation.path.data",
+ FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }
+ },
+ { &hf_forces_lfbselect_tlv_type_operation_path_flags,
+ {"Path Data Flags", "forces.lfbselect.tlv.type.operation.path.data.flags",
+ FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL }
+ },
+ { &hf_forces_lfbselect_tlv_type_operation_path_flags_selector,
+ {"Selector", "forces.lfbselect.tlv.type.operation.path.data.flags.selector",
+ FT_UINT16, BASE_HEX, NULL, 0x80, NULL, HFILL }
+ },
+ { &hf_forces_lfbselect_tlv_type_operation_path_flags_reserved,
+ {"Reserved", "forces.lfbselect.tlv.type.operation.path.data.flags.reserved",
+ FT_UINT16, BASE_HEX, NULL, 0x7F, NULL, HFILL }
+ },
+ { &hf_forces_lfbselect_tlv_type_operation_path_IDcount,
+ { "Path Data IDcount", "forces.lfbselect.tlv.type.operation.path.data.IDcount",
+ FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }
+ },
+ { &hf_forces_lfbselect_tlv_type_operation_path_IDs,
+ { "Path Data IDs", "forces.lfbselect.tlv.type.operation.path.data.IDs",
+ FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }
+ },
+ /*Meta data TLV*/
+ {&hf_forces_redirect_tlv_meta_data_tlv_type,
+ { "Type", "forces.redirect.tlv.meta.data.tlv.type",
+ FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }
+ },
+ { &hf_forces_redirect_tlv_meta_data_tlv_length,
+ { "Length", "forces.redirect.tlv.meta.data.tlv.length",
+ FT_UINT16, BASE_DEC|BASE_UNIT_STRING, &units_byte_bytes, 0x0, NULL, HFILL }
+ },
+ { &hf_forces_redirect_tlv_meta_data_tlv_meta_data_ilv,
+ { "Meta Data ILV", "forces.redirect.tlv.meta.data.tlv.meta.data.ilv",
+ FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }
+ },
+ { &hf_forces_redirect_tlv_meta_data_tlv_meta_data_ilv_id,
+ { "ID", "forces.redirect.tlv.meta.data.tlv.meta.data.ilv.id",
+ FT_UINT32, BASE_HEX_DEC, NULL, 0x0, NULL, HFILL }
+ },
+ { &hf_forces_redirect_tlv_meta_data_tlv_meta_data_ilv_length,
+ { "Length", "forces.redirect.tlv.meta.data.tlv.meta.data.ilv.length",
+ FT_UINT32, BASE_DEC|BASE_UNIT_STRING, &units_byte_bytes, 0x0, NULL, HFILL }
+ },
+ { &hf_forces_redirect_tlv_redirect_data_tlv_type,
+ { "Type", "forces.redirect.tlv.redirect.data.tlv.type",
+ FT_UINT16, BASE_DEC, VALS(tlv_type_vals), 0x0, NULL, HFILL }
+ },
+ { &hf_forces_redirect_tlv_redirect_data_tlv_length,
+ { "Length", "forces.redirect.tlv.redirect.data.tlv.length",
+ FT_UINT16, BASE_DEC|BASE_UNIT_STRING, &units_byte_bytes, 0x0, NULL, HFILL }
+ },
+ { &hf_forces_asresult_association_setup_result,
+ { "Association Setup Result", "forces.teardown.reason",
+ FT_UINT32, BASE_DEC, VALS(association_setup_result_at_vals), 0x0, NULL, HFILL }
+ },
+ { &hf_forces_astreason_tlv_teardown_reason,
+ { "AStreason TLV TearDown Reason", "forces.astreason.tlv.teardown.reason",
+ FT_UINT32, BASE_DEC, VALS(teardown_reason_at_vals), 0x0, NULL, HFILL }
+ },
+ { &hf_forces_unknown_tlv,
+ { "Data", "forces.unknown.tlv",
+ FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }
+ }
+ };
+
+ /* Setup protocol subtree array */
+ static gint *ett[] = {
+ &ett_forces,
+ &ett_forces_main_header,
+ &ett_forces_flags,
+ &ett_forces_tlv,
+ &ett_forces_lfbselect_tlv_type,
+ &ett_forces_lfbselect_tlv_type_operation,
+ &ett_forces_lfbselect_tlv_type_operation_path,
+ &ett_forces_lfbselect_tlv_type_operation_path_data,
+ &ett_forces_lfbselect_tlv_type_operation_path_data_path,
+ &ett_forces_lfbselect_tlv_type_operation_path_selector,
+ &ett_forces_path_data_tlv,
+ &ett_forces_path_data_tlv_flags,
+ &ett_forces_redirect_tlv_type,
+ &ett_forces_redirect_tlv_meta_data_tlv,
+ &ett_forces_redirect_tlv_redirect_data_tlv,
+ &ett_forces_redirect_tlv_meta_data_tlv_meta_data_ilv,
+ &ett_forces_asresult_tlv,
+ &ett_forces_astreason_tlv,
+ &ett_forces_unknown_tlv
+ };
+
+ static ei_register_info ei[] = {
+ { &ei_forces_length, { "forces.length.bad", PI_PROTOCOL, PI_WARN, "ForCES Header length is wrong", EXPFILL }},
+ { &ei_forces_tlv_type, { "forces.tlv.type.unknown", PI_PROTOCOL, PI_WARN, "Bogus: The Main_TLV type is unknown", EXPFILL }},
+ { &ei_forces_tlv_length, { "forces.tlv.length.bad", PI_PROTOCOL, PI_WARN, "Bogus TLV length", EXPFILL }},
+ { &ei_forces_lfbselect_tlv_type_operation_path_length, { "forces.lfbselect.tlv.type.operation.path.length.bad", PI_PROTOCOL, PI_WARN, "Bogus TLV length", EXPFILL }},
+ { &ei_forces_lfbselect_tlv_type_operation_type, { "forces.lfbselect.tlv.type.operation.type.unsupported", PI_PROTOCOL, PI_WARN, "ForCES Operation TLV is not supported", EXPFILL }},
+ { &ei_forces_redirect_tlv_redirect_data_tlv_length, { "forces.redirect.tlv.redirect.data.tlv.length.bad", PI_PROTOCOL, PI_WARN, "Redirect Data TLV length is wrong", EXPFILL }},
+ };
+
+ /* Register the protocol name and description */
+ proto_forces = proto_register_protocol("Forwarding and Control Element Separation Protocol", "ForCES", "forces");
+
+ /* Required function calls to register the header fields and subtrees used */
+ proto_register_field_array(proto_forces, hf, array_length(hf));
+ proto_register_subtree_array(ett, array_length(ett));
+ expert_forces = expert_register_protocol(proto_forces);
+ expert_register_field_array(expert_forces, ei, array_length(ei));
+
+ forces_handle_tcp = register_dissector("forces.tcp", dissect_forces_tcp, proto_forces);
+ forces_handle = register_dissector("forces", dissect_forces_not_tcp, proto_forces);
+
+ forces_module = prefs_register_protocol(proto_forces,proto_reg_handoff_forces);
+
+ prefs_register_uint_preference(forces_module, "sctp_high_prio_port",
+ "SCTP High Priority channel port",
+ "Decode packets on this sctp port as ForCES",
+ 10, &forces_alternate_sctp_high_prio_channel_port);
+
+ prefs_register_uint_preference(forces_module, "sctp_med_prio_port",
+ "SCTP Medium Priority channel port",
+ "Decode packets on this sctp port as ForCES",
+ 10, &forces_alternate_sctp_med_prio_channel_port);
+
+ prefs_register_uint_preference(forces_module, "sctp_low_prio_port",
+ "SCTP Low Priority channel port",
+ "Decode packets on this sctp port as ForCES",
+ 10, &forces_alternate_sctp_low_prio_channel_port);
+}
+
+void
+proto_reg_handoff_forces(void)
+{
+ static gboolean inited = FALSE;
+
+ static guint alternate_sctp_high_prio_channel_port = 0; /* 6700 */
+ static guint alternate_sctp_med_prio_channel_port = 0;
+ static guint alternate_sctp_low_prio_channel_port = 0;
+
+ if (!inited) {
+ ip_handle = find_dissector_add_dependency("ip", proto_forces);
+ /* Register TCP port for dissection */
+ dissector_add_for_decode_as_with_preference("tcp.port", forces_handle_tcp);
+ /* Register UDP port for dissection */
+ dissector_add_for_decode_as_with_preference("udp.port", forces_handle);
+
+ inited = TRUE;
+ }
+
+ /* Register SCTP port for high priority dissection */
+ if ((alternate_sctp_high_prio_channel_port != 0) &&
+ (alternate_sctp_high_prio_channel_port != forces_alternate_sctp_high_prio_channel_port))
+ dissector_delete_uint("sctp.port", alternate_sctp_high_prio_channel_port, forces_handle);
+ if ((forces_alternate_sctp_high_prio_channel_port != 0) &&
+ (alternate_sctp_high_prio_channel_port != forces_alternate_sctp_high_prio_channel_port))
+ dissector_add_uint("sctp.port", forces_alternate_sctp_high_prio_channel_port, forces_handle);
+ alternate_sctp_high_prio_channel_port = forces_alternate_sctp_high_prio_channel_port;
+
+ /* Register SCTP port for medium priority dissection */
+ if ((alternate_sctp_med_prio_channel_port != 0) &&
+ (alternate_sctp_med_prio_channel_port != forces_alternate_sctp_med_prio_channel_port))
+ dissector_delete_uint("sctp.port", alternate_sctp_med_prio_channel_port, forces_handle);
+ if ((forces_alternate_sctp_med_prio_channel_port != 0) &&
+ (alternate_sctp_med_prio_channel_port != forces_alternate_sctp_med_prio_channel_port))
+ dissector_add_uint("sctp.port", forces_alternate_sctp_med_prio_channel_port, forces_handle);
+ alternate_sctp_med_prio_channel_port = forces_alternate_sctp_med_prio_channel_port;
+
+ /* Register SCTP port for low priority dissection */
+ if ((alternate_sctp_low_prio_channel_port != 0) &&
+ (alternate_sctp_low_prio_channel_port != forces_alternate_sctp_low_prio_channel_port))
+ dissector_delete_uint("sctp.port", alternate_sctp_low_prio_channel_port, forces_handle);
+ if ((forces_alternate_sctp_low_prio_channel_port != 0) &&
+ (alternate_sctp_low_prio_channel_port != forces_alternate_sctp_low_prio_channel_port))
+ dissector_add_uint("sctp.port", forces_alternate_sctp_low_prio_channel_port, forces_handle);
+ alternate_sctp_low_prio_channel_port = forces_alternate_sctp_low_prio_channel_port;
+}
+
+/*
+* Editor modelines - https://www.wireshark.org/tools/modelines.html
+*
+* Local variables:
+* c-basic-offset: 4
+* tab-width: 8
+* indent-tabs-mode: nil
+* End:
+*
+* vi: set shiftwidth=4 tabstop=8 expandtab:
+* :indentSize=4:tabSize=8:noTabs=true:
+*/