diff options
author | Anders Broman <anders.broman@ericsson.com> | 2007-08-17 21:31:22 +0000 |
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committer | Anders Broman <anders.broman@ericsson.com> | 2007-08-17 21:31:22 +0000 |
commit | 9f35c24eb580e96917a644060e43dfcf7b432561 (patch) | |
tree | e6239ddfed8ec2d11ab6c0dee6aea7f2850f5691 /epan/dissectors/packet-dpnss.c | |
parent | d47443ba387615fa463f636ca22de072ca595fb1 (diff) | |
download | wireshark-9f35c24eb580e96917a644060e43dfcf7b432561.tar.gz |
Add a rudimentarry DPNSS dissector - work in progress.
svn path=/trunk/; revision=22543
Diffstat (limited to 'epan/dissectors/packet-dpnss.c')
-rw-r--r-- | epan/dissectors/packet-dpnss.c | 470 |
1 files changed, 470 insertions, 0 deletions
diff --git a/epan/dissectors/packet-dpnss.c b/epan/dissectors/packet-dpnss.c new file mode 100644 index 0000000000..cf688f9f9f --- /dev/null +++ b/epan/dissectors/packet-dpnss.c @@ -0,0 +1,470 @@ +/* packet-dpnss_dass2.c + * Routines for DPNNS/DASS2 dissection + * Copyright 2007, Anders Broman <anders.broman[at]ericsson.com> + * + * $Id$ + * + * Wireshark - Network traffic analyzer + * By Gerald Combs <gerald@wireshark.org> + * Copyright 1998 Gerald Combs + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + * + * References: + * ND1301:2001/03 http://www.nicc.org.uk/nicc-public/Public/interconnectstandards/dpnss/nd1301_2004_11.pdf + */ + +#ifdef HAVE_CONFIG_H +# include "config.h" +#endif + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include <glib.h> + +#include <epan/packet.h> +#include <epan/proto.h> + +/* Initialize the protocol and registered fields */ +static int proto_dpnss = -1; +static int hf_dpnss_msg_grp_id = -1; +static int hf_dpnss_cc_msg_type = -1; +static int hf_dpnss_e2e_msg_type = -1; +static int hf_dpnss_LbL_msg_type = -1; +static int hf_dpnss_ext_bit = -1; +static int hf_dpnss_sic_type = -1; +static int hf_dpnss_sic_details_for_speech = -1; +static int hf_dpnss_sic_details_for_data1 = -1; +static int hf_dpnss_sic_details_for_data2 = -1; + +#define DPNNS_MESSAGE_GROUP_CC 0 +#define DPNNS_MESSAGE_GROUP_E2E 2 +#define DPNNS_MESSAGE_GROUP_LbL 4 + +#define DPNSS_CC_MDG_ISRMC 0 +/* Initialize the subtree pointers */ +static int ett_dpnss = -1; + +static const value_string dpnss_msg_grp_id_vals[] = { + {0, "Call Control Message Group"}, + {2, "End-to-End Message Group"}, + {4, "Link-by-Link Message Group"}, + {0, NULL } +}; + +static const value_string dpnss_cc_msg_type_vals[] = { + {0, "INITIAL SERVICE REQUEST Message (COMPLETE) - ISRM (C)"}, + {1, "INITIAL SERVICE REQUEST Message (INCOMPLETE) - ISRM(I)"}, + {2, "RECALL Message (COMPLETE) - RM(C)"}, + {3, "RECALL Message (INCOMPLETE) - RM(I)"}, + {5, "CALL CONNECTED Message - CCM"}, + {6, "NETWORK INDICATION Message - NIM"}, + {8, "CLEAR REQUEST Message - CRM/CLEAR INDICATION Message - CIM"}, /* Humm chek 2.1.7/2.1.8 - depends on dir? */ + {9, "NUMBER ACKNOWLEDGE Message - NAM"}, + {10, "RECALL REJECTION Message - RRM"}, + {11, "SUBSEQUENT SERVICE REQUEST Message (INCOMPLETE) - SSRM(I)"}, + {12, "SUBSEQUENT SERVICE REQUEST Message (COMPLETE) - SSRM(C)"}, + { 0, NULL } +}; + + +static const value_string dpnss_cc_msg_short_type_vals[] = { + {0, "ISRM (C)"}, + {1, "ISRM(I)"}, + {2, "RM(C)"}, + {3, "RM(I)"}, + {5, "CCM"}, + {6, "NIM"}, + {8, "CRM/CIM"}, /* Humm chek 2.1.7/2.1.8 - depends on dir? */ + {9, "NAM"}, + {10, "RRM"}, + {11, "SSRM(I)"}, + {12, "SSRM(C)"}, + {0, NULL } +}; + +/* 2.2 END-TO-END MESSAGE GROUP */ +static const value_string dpnss_e2e_msg_type_vals[] = { + {2, "END-to-END Message (COMPLETE) - EEM(C)"}, + {3, "END-to-END Message (INCOMPLETE) - EEM(I)"}, + {4, "SINGLE-CHANNEL CLEAR REQUEST Message - SCRM"}, + {5, "SINGLE-CHANNEL CLEAR INDICATION Message - SCIM"}, + {6, "END-to-END RECALL Message (COMPLETE) - ERM(C)"}, + {7, "END-to-END RECALL Message (INCOMPLETE) - ERM(I)"}, + {8, "NON SPECIFIED INFORMATION Message - NSIM"}, + { 0, NULL } +}; + +static const value_string dpnss_e2e_msg_short_type_vals[] = { + {2, "EEM(C)"}, + {3, "EEM(I)"}, + {4, "SCRM"}, + {5, "SCIM"}, + {6, "ERM(C)"}, + {7, "ERM(I)"}, + {8, "NSIM"}, + { 0, NULL } +}; + +/* 2.3 LINK-BY-LINK MESSAGE GROUP */ +static const value_string dpnss_LbL_msg_type_vals[] = { + {0, "LINK-by-LINK Message (COMPLETE) - LLM(C)"}, + {1, "LINK-by-LINK Message (INCOMPLETE) - LLM(I)"}, + {2, "LINK-by-LINK REJECT Message - LLRM"}, + {4, "SWAP Message - SM"}, + {5, "LINK MAINTENANCE Message - LMM"}, + {6, "LINK MAINTENANCE REJECT Message - LMRM"}, + { 0, NULL } +}; + +static const value_string dpnss_LbL_msg_short_type_vals[] = { + {0, "LLM(C)"}, + {1, "LLM(I)"}, + {2, "LLRM"}, + {4, "SM"}, + {5, "LMM"}, + {6, "LMRM"}, + { 0, NULL } +}; + +static const true_false_string dpnss_ext_bit_vals = { + "further octet(s) follow", + "no further octets" +}; + +/* SECTION 4 ANNEX 1 */ +static const value_string dpnss_sic_type_type_vals[] = { + {0, "invalid"}, + {1, "speech"}, + {2, "data"}, + {3, "data"}, + {4, "interworking with DASS 2 - treat as data"}, + {5, "interworking with DASS 2 - treat as data"}, + {6, "interworking with DASS 2 - treat as data"}, + {7, "interworking with DASS 2 - treat as data"}, + { 0, NULL } +}; + +static const value_string dpnss_sic_sic_details_for_speech_vals[] = { + {0, "64 kbit/s PCM G.711 A-Law or analogue"}, + {1, "32 kbit/s ADPCM G.721"}, + {2, "64 kbit/s PCM G.711 u-Law or analogue"}, + {3, "Invalid"}, + {4, "Invalid"}, + {5, "Invalid"}, + {6, "Invalid"}, + {7, "Invalid"}, + {8, "Invalid"}, + {9, "Invalid"}, + {10, "Invalid"}, + {11, "Invalid"}, + {12, "Invalid"}, + {13, "Invalid"}, + {14, "Invalid"}, + {15, "Invalid"}, + { 0, NULL } +}; + +static const value_string dpnss_sic_sic_details_for_data_rates1_vals[] = { + {0, "64000 bit/s"}, + {1, "56000 bit/s"}, + {2, "48000 bit/s"}, + {3, "32000 bit/s"}, + {4, "19200 bit/s"}, + {5, "16000 bit/s"}, + {6, "14400 bit/s"}, + {7, "12000 bit/s"}, + {8, "9600 bit/s"}, + {9, "8000 bit/s"}, + {10, "7200 bit/s"}, + {11, "4800 bit/s"}, + {12, "3600 bit/s"}, + {13, "2400 bit/s"}, + {14, "1200 bit/s"}, + {15, "600 bit/s"}, + { 0, NULL } +}; + +static const value_string dpnss_sic_sic_details_for_data_rates2_vals[] = { + {0, "300 bit/s"}, + {1, "200 bit/s"}, + {2, "150 bit/s"}, + {3, "134.5 bit/s"}, + {4, "110 bit/s"}, + {5, "100 bit/s"}, + {6, "75 bit/s"}, + {7, "50 bit/s"}, + {8, "75/1200 bit/s"}, + {9, "1200/75 bit/s"}, + {10, "invalid"}, + {11, "invalid"}, + {12, "invalid"}, + {13, "invalid"}, + {14, "invalid"}, + {15, "invalid"}, + { 0, NULL } +}; + +/* A suplemetarry string + * + */ +static int +dissect_dpnss_sup_info_str(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, gint offset) +{ + guint hash_offset; + + hash_offset = tvb_find_guint8(tvb, offset, -1, '#'); + + return offset; +} + +static int +dissect_dpnss_LbL_msg(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) +{ + int offset = 0; + guint8 octet; + + proto_tree_add_item(tree, hf_dpnss_LbL_msg_type, tvb, offset, 1, FALSE); + octet = tvb_get_guint8(tvb,offset)&0x0f; + offset++; + if(check_col(pinfo->cinfo, COL_INFO)) + col_append_fstr(pinfo->cinfo, COL_INFO, "%s ", + val_to_str(octet, dpnss_LbL_msg_short_type_vals, "Unknown (%d)" )); + switch (octet){ + default: + proto_tree_add_text(tree, tvb, offset, 1, "Dissection of this message not supported yet"); + break; + } + + return offset; + +} + + +static int +dissect_dpnss_e2e_msg(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) +{ + int offset = 0; + guint8 octet; + + proto_tree_add_item(tree, hf_dpnss_e2e_msg_type, tvb, offset, 1, FALSE); + octet = tvb_get_guint8(tvb,offset)&0x0f; + offset++; + if(check_col(pinfo->cinfo, COL_INFO)) + col_append_fstr(pinfo->cinfo, COL_INFO, "%s ", + val_to_str(octet, dpnss_e2e_msg_short_type_vals, "Unknown (%d)" )); + switch (octet){ + default: + proto_tree_add_text(tree, tvb, offset, 1, "Dissection of this message not supported yet"); + break; + } + + return offset; + +} + +static int +dissect_dpnss_cc_msg(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) +{ + int offset = 0; + guint8 octet; + guint8 type_of_data; + + proto_tree_add_item(tree, hf_dpnss_cc_msg_type, tvb, offset, 1, FALSE); + octet = tvb_get_guint8(tvb,offset)&0x0f; + offset++; + if(check_col(pinfo->cinfo, COL_INFO)) + col_append_fstr(pinfo->cinfo, COL_INFO, "%s ", + val_to_str(octet, dpnss_cc_msg_short_type_vals, "Unknown (%d)" )); + + switch (octet){ + case DPNSS_CC_MDG_ISRMC: + /* 2.1.1 INITIAL SERVICE REQUEST Message (COMPLETE) - ISRM (C) */ + /* Service Indicator Code + * Note: On data calls the SIC may comprise more than one octet. + * The Service Indicator Code is coded in accordance with ANNEX 1. + */ + /* Routing Information */ + octet = tvb_get_guint8(tvb,offset); + type_of_data = (octet & 0x70)>>4; + proto_tree_add_item(tree, hf_dpnss_ext_bit, tvb, offset, 1, FALSE); + proto_tree_add_item(tree, hf_dpnss_sic_type, tvb, offset, 1, FALSE); + switch(type_of_data){ + case 1: + /* Type of Data (001) : Details for Speech */ + proto_tree_add_item(tree, hf_dpnss_sic_details_for_speech, tvb, offset, 1, FALSE); + break; + case 2: + /* Type of Data (010) : Data Rates */ + proto_tree_add_item(tree, hf_dpnss_sic_details_for_data1, tvb, offset, 1, FALSE); + break; + case 3: + /* Type of Data (011) : Data Rates */ + proto_tree_add_item(tree, hf_dpnss_sic_details_for_data2, tvb, offset, 1, FALSE); + break; + default: + /* Illegal */ + break; + } + offset++; + if(octet&0x80==0x80){ + /* Extension bit set + * Synch/Asynchronous Information + */ + + /* TODO add decoding here */ + offset++; + } + + /* + * Selection Field + * 2 + n structured as shown in Subsection 3. + */ + proto_tree_add_text(tree, tvb, offset, -1, "Selection Field: %s",tvb_format_text(tvb,offset,tvb_length_remaining(tvb, offset))); + offset = dissect_dpnss_sup_info_str(tvb, pinfo, tree, offset); + break; + default: + proto_tree_add_text(tree, tvb, offset, 1, "Dissection of this message not supported yet"); + break; + } + + return offset; + +} +/* Code to actually dissect the packets */ +static void +dissect_dpnss(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) +{ + int offset = 0; + proto_item *item; + proto_tree *dpnss_tree; + guint8 octet; + +/* Make entries in Protocol column and Info column on summary display */ + if (check_col(pinfo->cinfo, COL_PROTOCOL)) + col_set_str(pinfo->cinfo, COL_PROTOCOL, "DPNSS/DASS2"); + + if (tree) { + item = proto_tree_add_item(tree, proto_dpnss, tvb, 0, -1, FALSE); + dpnss_tree = proto_item_add_subtree(item, ett_dpnss); + proto_tree_add_item(dpnss_tree, hf_dpnss_msg_grp_id, tvb, offset, 1, FALSE); + octet = tvb_get_guint8(tvb,offset)>>4; + switch (octet){ + case DPNNS_MESSAGE_GROUP_CC: + /* Call Control Message Group */ + offset = dissect_dpnss_cc_msg(tvb, pinfo, dpnss_tree); + break; + case DPNNS_MESSAGE_GROUP_E2E: + /* End-to-End Message Group */ + offset = dissect_dpnss_e2e_msg(tvb, pinfo, dpnss_tree); + break; + case DPNNS_MESSAGE_GROUP_LbL: + /* Link-by-Link Message Group */ + offset = dissect_dpnss_LbL_msg(tvb, pinfo, dpnss_tree); + break; + default: + proto_tree_add_text(tree, tvb, offset, 1, "Unknown Message Group"); + break; + } + } +} + +/* Register the protocol with Wireshark */ +/* If this dissector uses sub-dissector registration add a registration routine. + This format is required because a script is used to find these routines and + create the code that calls these routines. +*/ +void +proto_reg_handoff_dpnss(void) +{ + dissector_handle_t dpnss_handle; + static int dpnss_prefs_initialized = FALSE; + + dpnss_handle = create_dissector_handle(dissect_dpnss, proto_dpnss); + + +} + +void +proto_register_dpnss(void) +{ + + +/* Setup list of header fields See Section 1.6.1 for details*/ + static hf_register_info hf[] = { + { &hf_dpnss_msg_grp_id, + { "Message Group Identifier", "dpnss.msg_grp_id", + FT_UINT8, BASE_DEC, VALS(dpnss_msg_grp_id_vals), 0xf0, + "Message Group Identifier", HFILL } + }, + { &hf_dpnss_cc_msg_type, + { "Call Control Message Type", "dpnss.cc_msg_type", + FT_UINT8, BASE_DEC, VALS(dpnss_cc_msg_type_vals), 0x0f, + "Call Control Message Type", HFILL } + }, + { &hf_dpnss_e2e_msg_type, + { "END-TO-END Message Type", "dpnss.e2e_msg_type", + FT_UINT8, BASE_DEC, VALS(dpnss_e2e_msg_type_vals), 0x0f, + "END-TO-END Message Type", HFILL } + }, + { &hf_dpnss_LbL_msg_type, + { "LINK-BY-LINK Message Type", "dpnss.lbl_msg_type", + FT_UINT8, BASE_DEC, VALS(dpnss_LbL_msg_type_vals), 0x0f, + "LINK-BY-LINK Message Type", HFILL } + }, + { &hf_dpnss_ext_bit, + { "Extension bit", "dpnss.ext_bit", + FT_BOOLEAN, 8, TFS(&dpnss_ext_bit_vals), 0x80, + "Extension bit", HFILL } + }, + { &hf_dpnss_sic_type, + { "Type of data", "dpnss.sic_type", + FT_UINT8, BASE_DEC, VALS(dpnss_sic_type_type_vals), 0x70, + "Type of data", HFILL } + }, + { &hf_dpnss_sic_details_for_speech, + { "Details for Speech", "dpnss.sic_details_for_speech", + FT_UINT8, BASE_DEC, VALS(dpnss_sic_sic_details_for_speech_vals), 0x0f, + "Details for Speech", HFILL } + }, + { &hf_dpnss_sic_details_for_data1, + { "Data Rates", "dpnss.sic_details_for_data1", + FT_UINT8, BASE_DEC, VALS(dpnss_sic_sic_details_for_data_rates1_vals), 0x0f, + "Type of Data (010) : Data Rates", HFILL } + }, + { &hf_dpnss_sic_details_for_data2, + { "Data Rates", "dpnss.sic_details_data2", + FT_UINT8, BASE_DEC, VALS(dpnss_sic_sic_details_for_data_rates2_vals), 0x0f, + "Type of Data (011) : Data Rates", HFILL } + }, + + }; + +/* Setup protocol subtree array */ + static gint *ett[] = { + &ett_dpnss, + }; + +/* Register the protocol name and description */ + proto_dpnss = proto_register_protocol("Digital Private Signalling System No 1","DPNSS", "dpnss"); + register_dissector("dpnss", dissect_dpnss, proto_dpnss); + + /* Required function calls to register the header fields and subtrees used */ + proto_register_field_array(proto_dpnss, hf, array_length(hf)); + proto_register_subtree_array(ett, array_length(ett)); + +}
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