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/* packet-oipf.c
* Dissector for Open IPTV Forum protocols
* Copyright 2012, Martin Kaiser <martin@kaiser.cx>
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
/* This dissector supports the CI+ Content and Service Protection Gateway
(CSPG-CI+) as defined in in Open IPTV Forum Specification Volume 7 V2.1
http://www.openiptvforum.org/release_2.html */
#include "config.h"
#include <epan/packet.h>
void proto_register_oipf(void);
void proto_reg_handoff_oipf(void);
static dissector_handle_t oipf_ciplus_handle;
static int proto_oipf_ciplus;
static gint ett_oipf_ciplus;
static int hf_oipf_ciplus_cmd_id;
static int hf_oipf_ciplus_ca_sys_id;
static int hf_oipf_ciplus_trx_id;
static int hf_oipf_ciplus_send_datatype_nbr;
static int hf_oipf_ciplus_dat_id;
static int hf_oipf_ciplus_dat_len;
static int hf_oipf_ciplus_data;
/* the application id for this protocol in the CI+ SAS resource
this is actually a 64bit hex number, we can't use a 64bit number as a key
for the dissector table directly, we have to process it as a string
(the string must not be a local variable as glib stores a pointer to
it in the hash table) */
static const gchar sas_app_id_str_oipf[] = "0x0108113101190000";
static const value_string oipf_ciplus_cmd_id[] = {
{ 0x01, "send_msg" },
{ 0x02, "reply_msg" },
{ 0x03, "parental_control_info" },
{ 0x04, "rights_info" },
{ 0x05, "system_info" },
{ 0, NULL }
};
static const value_string oipf_ciplus_dat_id[] = {
{ 0x01, "oipf_ca_vendor_specific_information" },
{ 0x02, "oipf_country_code" },
{ 0x03, "oipf_parental_control_url" },
{ 0x04, "oipf_rating_type" },
{ 0x05, "oipf_rating_value" },
{ 0x06, "oipf_rights_issuer_url" },
{ 0x07, "oipf_access_status" },
{ 0x08, "oipf_status" },
{ 0, NULL }
};
static int
dissect_oipf_ciplus(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree, void *data _U_)
{
gint msg_len;
proto_tree *oipf_ciplus_tree;
guint offset = 0;
guint8 i, send_datatype_nbr;
guint16 dat_len;
/* an OIPF CI+ message minimally contains command_id (1 byte),
ca sys id (2 bytes), transaction id (4 bytes) and
number of sent datatypes (1 byte) */
msg_len = tvb_reported_length(tvb);
if (msg_len < 8)
return 0;
oipf_ciplus_tree = proto_tree_add_subtree(tree, tvb, 0, msg_len, ett_oipf_ciplus, NULL, "Open IPTV Forum CSPG-CI+");
proto_tree_add_item(oipf_ciplus_tree, hf_oipf_ciplus_cmd_id,
tvb, offset, 1, ENC_BIG_ENDIAN);
offset++;
proto_tree_add_item(oipf_ciplus_tree, hf_oipf_ciplus_ca_sys_id,
tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
proto_tree_add_item(oipf_ciplus_tree, hf_oipf_ciplus_trx_id,
tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
send_datatype_nbr = tvb_get_guint8(tvb, offset);
proto_tree_add_item(oipf_ciplus_tree, hf_oipf_ciplus_send_datatype_nbr,
tvb, offset, 1, ENC_BIG_ENDIAN);
offset++;
for (i=0; i<send_datatype_nbr; i++) {
proto_tree_add_item(oipf_ciplus_tree, hf_oipf_ciplus_dat_id,
tvb, offset, 1, ENC_BIG_ENDIAN);
offset++;
dat_len = tvb_get_ntohs(tvb, offset);
proto_tree_add_item(oipf_ciplus_tree, hf_oipf_ciplus_dat_len,
tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
proto_tree_add_item(oipf_ciplus_tree, hf_oipf_ciplus_data,
tvb, offset, dat_len, ENC_NA);
offset += dat_len;
}
return offset;
}
void
proto_register_oipf(void)
{
static gint *ett[] = {
&ett_oipf_ciplus
};
static hf_register_info hf[] = {
{ &hf_oipf_ciplus_cmd_id,
{ "Command ID", "oipf.ciplus.cmd_id", FT_UINT8, BASE_HEX,
VALS(oipf_ciplus_cmd_id), 0, NULL, HFILL } },
{ &hf_oipf_ciplus_ca_sys_id,
{ "CA system ID", "oipf.ciplus.ca_system_id", FT_UINT16, BASE_HEX,
NULL, 0, NULL, HFILL } },
{ &hf_oipf_ciplus_trx_id,
{ "Transaction ID", "oipf.ciplus.transaction_id",
FT_UINT32, BASE_HEX, NULL, 0, NULL, HFILL } },
{ &hf_oipf_ciplus_send_datatype_nbr,
{ "Number of data items", "oipf.ciplus.num_items", FT_UINT8,
BASE_DEC, NULL, 0, NULL, HFILL } },
{ &hf_oipf_ciplus_dat_id,
{ "Datatype ID", "oipf.ciplus.datatype_id", FT_UINT8, BASE_HEX,
VALS(oipf_ciplus_dat_id), 0, NULL, HFILL } },
{ &hf_oipf_ciplus_dat_len,
{ "Datatype length", "oipf.ciplus.datatype_len", FT_UINT16,
BASE_DEC, NULL, 0, NULL, HFILL } },
{ &hf_oipf_ciplus_data,
{ "Data", "oipf.ciplus.data", FT_BYTES, BASE_NONE,
NULL, 0, NULL, HFILL } }
};
proto_oipf_ciplus = proto_register_protocol("Open IPTV Forum CSPG-CI+", "OIPF CI+", "oipf.ciplus");
proto_register_field_array(proto_oipf_ciplus, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
oipf_ciplus_handle = register_dissector("oipf.ciplus", dissect_oipf_ciplus, proto_oipf_ciplus);
}
void
proto_reg_handoff_oipf(void)
{
dissector_add_string("dvb-ci.sas.app_id_str",
sas_app_id_str_oipf, oipf_ciplus_handle);
}
/*
* 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:
*/
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