![pascal](/assets/img/avatar_default.png)
Fix clang warnings in HDCP dissector https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=7217 svn path=/trunk/; revision=42346
645 lines
24 KiB
C
645 lines
24 KiB
C
/* packet-hdcp.c
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* Routines for HDCP dissection
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* Copyright 2011-2012, Martin Kaiser <martin@kaiser.cx>
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*
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* $Id$
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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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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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/* This dissector supports HDCP 1.x over I2C and HDCP 2.x over TCP.
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For now, only the most common authentication protocol messages are
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recognized. */
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <glib.h>
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#include <epan/packet.h>
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#include <epan/prefs.h>
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#include <epan/ptvcursor.h>
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#include <epan/expert.h>
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#include "packet-hdcp.h"
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static int proto_hdcp = -1;
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static int proto_hdcp2 = -1;
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static gboolean hdcp2_enable_dissector = FALSE;
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static emem_tree_t *transactions = NULL;
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void proto_reg_handoff_hdcp2(void);
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/* etts are shared by hdcp and hdcp2 */
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static gint ett_hdcp = -1;
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static gint ett_hdcp_cert = -1;
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static int hf_hdcp_addr = -1;
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static int hf_hdcp_reg = -1;
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static int hf_hdcp_resp_in = -1;
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static int hf_hdcp_resp_to = -1;
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static int hf_hdcp_a_ksv = -1;
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static int hf_hdcp_b_ksv = -1;
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static int hf_hdcp_an = -1;
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static int hf_hdcp_hdmi_reserved = -1;
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static int hf_hdcp_repeater = -1;
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static int hf_hdcp_ksv_fifo = -1;
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static int hf_hdcp_fast_trans = -1;
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static int hf_hdcp_features = -1;
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static int hf_hdcp_fast_reauth = -1;
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static int hf_hdcp_hdmi_mode = -1;
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static int hf_hdcp_max_casc_exc = -1;
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static int hf_hdcp_depth = -1;
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static int hf_hdcp_max_devs_exc = -1;
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static int hf_hdcp_downstream = -1;
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static int hf_hdcp_link_vfy = -1;
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static int hf_hdcp2_msg_id = -1;
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static int hf_hdcp2_r_tx = -1;
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static int hf_hdcp2_repeater = -1;
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static int hf_hdcp2_cert_rcv_id = -1;
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static int hf_hdcp2_cert_n = -1;
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static int hf_hdcp2_cert_e = -1;
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static int hf_hdcp2_cert_rcv_sig = -1;
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static int hf_hdcp2_e_kh_km = -1;
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static int hf_hdcp2_m = -1;
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static int hf_hdcp2_r_rx = -1;
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static int hf_hdcp2_h_prime = -1;
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static int hf_hdcp2_r_n = -1;
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static int hf_hdcp2_l_prime = -1;
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static int hf_hdcp2_e_dkey_ks = -1;
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static int hf_hdcp2_r_iv = -1;
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/* the addresses used by this dissector are 8bit, including the direction bit
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(to be in line with the HDCP specification) */
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#define ADDR8_HDCP_WRITE 0x74 /* transmitter->receiver */
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#define ADDR8_HDCP_READ 0x75 /* receiver->transmitter */
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#define HDCP_ADDR8(x) (x==ADDR8_HDCP_WRITE || x==ADDR8_HDCP_READ)
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#define ADDR8_RCV "Receiver"
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#define ADDR8_TRX "Transmitter"
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#define REG_BKSV 0x0
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#define REG_AKSV 0x10
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#define REG_AN 0x18
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#define REG_BCAPS 0x40
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#define REG_BSTATUS 0x41
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#define ID_AKE_INIT 2
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#define ID_AKE_SEND_CERT 3
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#define ID_AKE_STORED_KM 5
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#define ID_AKE_SEND_RRX 6
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#define ID_AKE_SEND_H_PRIME 7
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#define ID_LC_INIT 9
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#define ID_LC_SEND_L_PRIME 10
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#define ID_SKE_SEND_EKS 11
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#define ID_MAX 31
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#define RCV_ID_LEN 5 /* all lengths are in bytes */
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#define N_LEN 128
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#define E_LEN 3
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#define RCV_SIG_LEN 384
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#define CERT_RX_LEN (RCV_ID_LEN + N_LEN + E_LEN + 2 + RCV_SIG_LEN)
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typedef struct _hdcp_transaction_t {
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guint32 rqst_frame;
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guint32 resp_frame;
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guint8 rqst_type;
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} hdcp_transaction_t;
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static const value_string hdcp_addr[] = {
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{ ADDR8_HDCP_WRITE, "transmitter writes data for receiver" },
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{ ADDR8_HDCP_READ, "transmitter reads data from receiver" },
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{ 0, NULL }
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};
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static const value_string hdcp_reg[] = {
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{ REG_BKSV, "B_ksv" },
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{ REG_AKSV, "A_ksv" },
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{ REG_AN, "An" },
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{ REG_BCAPS, "B_caps"},
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{ REG_BSTATUS, "B_status"},
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{ 0, NULL }
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};
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static const value_string hdcp_msg_id[] = {
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{ ID_AKE_INIT, "AKE_Init" },
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{ ID_AKE_SEND_CERT, "AKE_Send_Cert" },
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{ ID_AKE_STORED_KM, "AKE_Stored_km" },
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{ ID_AKE_SEND_RRX, "AKE_Send_rrx" },
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{ ID_AKE_SEND_H_PRIME, "AKE_Send_H_prime" },
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{ ID_LC_INIT, "LC_Init" },
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{ ID_LC_SEND_L_PRIME, "LC_Send_L_prime" },
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{ ID_SKE_SEND_EKS, "SKE_Send_Eks" },
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{ 0, NULL }
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};
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typedef struct _msg_info_t {
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guint8 id;
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guint16 len; /* number of bytes following initial msg_id field */
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} msg_info_t;
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static GHashTable *msg_table = NULL;
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static const msg_info_t msg_info[] = {
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{ ID_AKE_INIT, 8 },
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{ ID_AKE_SEND_CERT, 1+CERT_RX_LEN },
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{ ID_AKE_STORED_KM, 32 },
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{ ID_AKE_SEND_RRX, 8 },
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{ ID_AKE_SEND_H_PRIME, 32 },
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{ ID_LC_INIT, 8 },
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{ ID_LC_SEND_L_PRIME, 32 },
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{ ID_SKE_SEND_EKS, 24 }
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};
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gboolean
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sub_check_hdcp(packet_info *pinfo _U_)
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{
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/* by looking at the i2c_phdr only, we can't decide if this packet is HDCPv1
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this function is called when the user explicitly selected HDCPv1
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in the preferences
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therefore, we always return TRUE and hand the data to the (new
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style) dissector who will check if the packet is HDCPv1 */
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return TRUE;
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}
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static void
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hdcp_init(void)
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{
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/* se_...() allocations are automatically cleared when a new capture starts,
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so we should be safe to create the tree without any previous checks */
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transactions = se_tree_create_non_persistent(
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EMEM_TREE_TYPE_RED_BLACK, "hdcp_transactions");
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}
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static int
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dissect_hdcp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
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{
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guint8 addr, reg;
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proto_item *pi;
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ptvcursor_t *cursor;
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proto_tree *hdcp_tree = NULL;
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hdcp_transaction_t *hdcp_trans;
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proto_item *it;
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guint64 a_ksv, b_ksv;
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addr = tvb_get_guint8(tvb, 0);
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if (!HDCP_ADDR8(addr))
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return 0;
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col_set_str(pinfo->cinfo, COL_PROTOCOL, "HDCP");
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col_clear(pinfo->cinfo, COL_INFO);
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if (tree) {
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pi = proto_tree_add_protocol_format(tree, proto_hdcp,
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tvb, 0, tvb_reported_length(tvb), "HDCP");
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hdcp_tree = proto_item_add_subtree(pi, ett_hdcp);
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}
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cursor = ptvcursor_new(hdcp_tree, tvb, 0);
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/* all values in HDCP are little endian */
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ptvcursor_add(cursor, hf_hdcp_addr, 1, ENC_LITTLE_ENDIAN);
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if (addr==ADDR8_HDCP_WRITE) {
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/* transmitter sends data to the receiver */
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SET_ADDRESS(&pinfo->src, AT_STRINGZ, (int)strlen(ADDR8_TRX)+1, ADDR8_TRX);
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SET_ADDRESS(&pinfo->dst, AT_STRINGZ, (int)strlen(ADDR8_RCV)+1, ADDR8_RCV);
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reg = tvb_get_guint8(tvb, ptvcursor_current_offset(cursor));
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ptvcursor_add(cursor, hf_hdcp_reg, 1, ENC_LITTLE_ENDIAN);
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if (tvb_reported_length_remaining(tvb,
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ptvcursor_current_offset(cursor)) == 0) {
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/* transmitter requests the content of a register */
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col_append_sep_fstr(pinfo->cinfo, COL_INFO, NULL, "request %s",
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val_to_str(reg, hdcp_reg, "unknown (0x%x)"));
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if (PINFO_FD_VISITED(pinfo)) {
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/* we've already dissected the receiver's response */
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hdcp_trans = (hdcp_transaction_t *)se_tree_lookup32(
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transactions, PINFO_FD_NUM(pinfo));
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if (hdcp_trans && hdcp_trans->rqst_frame==PINFO_FD_NUM(pinfo) &&
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hdcp_trans->resp_frame!=0) {
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it = proto_tree_add_uint_format(hdcp_tree, hf_hdcp_resp_in,
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NULL, 0, 0, hdcp_trans->resp_frame,
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"Request to get the content of register %s, "
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"response in frame %d",
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val_to_str_const(hdcp_trans->rqst_type,
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hdcp_reg, "unknown (0x%x)"),
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hdcp_trans->resp_frame);
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PROTO_ITEM_SET_GENERATED(it);
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}
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}
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else {
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/* we've not yet dissected the response */
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if (transactions) {
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hdcp_trans = (hdcp_transaction_t *)se_alloc(
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sizeof(hdcp_transaction_t));
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hdcp_trans->rqst_frame = PINFO_FD_NUM(pinfo);
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hdcp_trans->resp_frame = 0;
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hdcp_trans->rqst_type = reg;
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se_tree_insert32(transactions,
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hdcp_trans->rqst_frame, (void *)hdcp_trans);
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}
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}
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}
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else {
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/* transmitter actually sends protocol data */
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col_append_sep_fstr(pinfo->cinfo, COL_INFO, NULL, "send %s",
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val_to_str(reg, hdcp_reg, "unknown (0x%x)"));
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switch (reg) {
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case REG_AKSV:
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a_ksv = tvb_get_letoh40(tvb,
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ptvcursor_current_offset(cursor));
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proto_tree_add_uint64_format(hdcp_tree, hf_hdcp_a_ksv,
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tvb, ptvcursor_current_offset(cursor), 5,
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a_ksv, "A_ksv 0x%010" G_GINT64_MODIFIER "x", a_ksv);
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ptvcursor_advance(cursor, 5);
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break;
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case REG_AN:
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ptvcursor_add(cursor, hf_hdcp_an, 8, ENC_LITTLE_ENDIAN);
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break;
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default:
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break;
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}
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}
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}
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else {
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/* transmitter reads from receiver */
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SET_ADDRESS(&pinfo->src, AT_STRINGZ, (int)strlen(ADDR8_RCV)+1, ADDR8_RCV);
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SET_ADDRESS(&pinfo->dst, AT_STRINGZ, (int)strlen(ADDR8_TRX)+1, ADDR8_TRX);
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if (transactions) {
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hdcp_trans = (hdcp_transaction_t *)se_tree_lookup32_le(
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transactions, PINFO_FD_NUM(pinfo));
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if (hdcp_trans) {
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if (hdcp_trans->resp_frame==0) {
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/* there's a pending request, this packet is the response */
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hdcp_trans->resp_frame = PINFO_FD_NUM(pinfo);
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}
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if (hdcp_trans->resp_frame== PINFO_FD_NUM(pinfo)) {
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/* we found the request that corresponds to our response */
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col_append_sep_fstr(pinfo->cinfo, COL_INFO, NULL, "send %s",
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val_to_str_const(hdcp_trans->rqst_type,
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hdcp_reg, "unknown (0x%x)"));
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it = proto_tree_add_uint_format(hdcp_tree, hf_hdcp_resp_to,
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NULL, 0, 0, hdcp_trans->rqst_frame,
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"Response to frame %d (content of register %s)",
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hdcp_trans->rqst_frame,
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val_to_str_const(hdcp_trans->rqst_type,
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hdcp_reg, "unknown (0x%x)"));
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PROTO_ITEM_SET_GENERATED(it);
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switch (hdcp_trans->rqst_type) {
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case REG_BKSV:
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b_ksv = tvb_get_letoh40(tvb,
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ptvcursor_current_offset(cursor));
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proto_tree_add_uint64_format(hdcp_tree, hf_hdcp_b_ksv,
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tvb, ptvcursor_current_offset(cursor), 5,
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b_ksv, "B_ksv 0x%010" G_GINT64_MODIFIER "x",
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b_ksv);
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ptvcursor_advance(cursor, 5);
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break;
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case REG_BCAPS:
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ptvcursor_add_no_advance(cursor,
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hf_hdcp_hdmi_reserved, 1, ENC_LITTLE_ENDIAN);
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ptvcursor_add_no_advance(cursor,
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hf_hdcp_repeater, 1, ENC_LITTLE_ENDIAN);
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ptvcursor_add_no_advance(cursor,
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hf_hdcp_ksv_fifo, 1, ENC_LITTLE_ENDIAN);
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ptvcursor_add_no_advance(cursor,
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hf_hdcp_fast_trans, 1, ENC_LITTLE_ENDIAN);
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ptvcursor_add_no_advance(cursor,
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hf_hdcp_features, 1, ENC_LITTLE_ENDIAN);
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ptvcursor_add_no_advance(cursor,
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hf_hdcp_fast_reauth, 1, ENC_LITTLE_ENDIAN);
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break;
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case REG_BSTATUS:
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ptvcursor_add_no_advance(cursor,
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hf_hdcp_hdmi_mode, 2, ENC_LITTLE_ENDIAN);
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ptvcursor_add_no_advance(cursor,
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hf_hdcp_max_casc_exc, 2, ENC_LITTLE_ENDIAN);
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ptvcursor_add_no_advance(cursor,
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hf_hdcp_depth, 2, ENC_LITTLE_ENDIAN);
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ptvcursor_add_no_advance(cursor,
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hf_hdcp_max_devs_exc, 2, ENC_LITTLE_ENDIAN);
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ptvcursor_add_no_advance(cursor,
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hf_hdcp_downstream, 2, ENC_LITTLE_ENDIAN);
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break;
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}
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}
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}
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if (!hdcp_trans || hdcp_trans->resp_frame!=PINFO_FD_NUM(pinfo)) {
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/* the packet isn't a response to a request from the
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* transmitter; it must be a link verification */
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if (tvb_reported_length_remaining(
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tvb, ptvcursor_current_offset(cursor)) == 2) {
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col_append_sep_fstr(pinfo->cinfo, COL_INFO, NULL,
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"send link verification Ri'");
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ptvcursor_add_no_advance(cursor,
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hf_hdcp_link_vfy, 2, ENC_LITTLE_ENDIAN);
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}
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}
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}
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}
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ptvcursor_free(cursor);
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return tvb_reported_length(tvb);
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}
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static int
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dissect_hdcp2(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
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{
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msg_info_t *mi;
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proto_item *pi;
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proto_tree *hdcp_tree = NULL, *cert_tree = NULL;
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guint8 msg_id;
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gboolean repeater;
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guint16 reserved;
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ptvcursor_t *cursor;
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/* do the plausibility checks before setting up anything */
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msg_id = tvb_get_guint8(tvb, 0);
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if (msg_id > ID_MAX)
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return 0;
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mi = (msg_info_t *)g_hash_table_lookup(msg_table,
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GUINT_TO_POINTER((guint)msg_id));
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/* 1 -> start after msg_id byte */
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if (!mi || mi->len!=tvb_reported_length_remaining(tvb, 1))
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return 0;
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col_set_str(pinfo->cinfo, COL_PROTOCOL, "HDCP");
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col_clear(pinfo->cinfo, COL_INFO);
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if (tree) {
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pi = proto_tree_add_protocol_format(tree, proto_hdcp,
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tvb, 0, tvb_reported_length(tvb), "HDCPv2");
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hdcp_tree = proto_item_add_subtree(pi, ett_hdcp);
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}
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cursor = ptvcursor_new(hdcp_tree, tvb, 0);
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col_append_fstr(pinfo->cinfo, COL_INFO, "%s",
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val_to_str(msg_id, hdcp_msg_id, "unknown (0x%x)"));
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ptvcursor_add(cursor, hf_hdcp2_msg_id, 1, ENC_BIG_ENDIAN);
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switch (msg_id) {
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case ID_AKE_INIT:
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ptvcursor_add(cursor, hf_hdcp2_r_tx, 8, ENC_BIG_ENDIAN);
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break;
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case ID_AKE_SEND_CERT:
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repeater = ((tvb_get_guint8(tvb, ptvcursor_current_offset(cursor))
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& 0x01) == 0x01);
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col_append_sep_fstr(pinfo->cinfo, COL_INFO, NULL, "%s",
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repeater ? "repeater" : "no repeater");
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ptvcursor_add(cursor, hf_hdcp2_repeater, 1, ENC_BIG_ENDIAN);
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if (hdcp_tree) {
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cert_tree = ptvcursor_add_text_with_subtree(cursor, CERT_RX_LEN,
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ett_hdcp_cert, "%s", "HDCP Certificate");
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}
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ptvcursor_add(cursor, hf_hdcp2_cert_rcv_id, RCV_ID_LEN, ENC_NA);
|
|
ptvcursor_add(cursor, hf_hdcp2_cert_n, N_LEN, ENC_NA);
|
|
ptvcursor_add(cursor, hf_hdcp2_cert_e, E_LEN, ENC_BIG_ENDIAN);
|
|
reserved = tvb_get_ntohs(tvb, ptvcursor_current_offset(cursor));
|
|
proto_tree_add_text(cert_tree, tvb,
|
|
ptvcursor_current_offset(cursor), 2, "reserved bytes");
|
|
if (reserved != 0) {
|
|
pi = proto_tree_add_text(cert_tree, tvb,
|
|
ptvcursor_current_offset(cursor), 2, "invalid value");
|
|
expert_add_info_format(pinfo, pi, PI_PROTOCOL, PI_WARN,
|
|
"reserved bytes must be set to 0x0");
|
|
}
|
|
ptvcursor_advance(cursor, 2);
|
|
ptvcursor_add(cursor, hf_hdcp2_cert_rcv_sig, RCV_SIG_LEN, ENC_NA);
|
|
if (cert_tree)
|
|
ptvcursor_pop_subtree(cursor);
|
|
break;
|
|
case ID_AKE_STORED_KM:
|
|
ptvcursor_add(cursor, hf_hdcp2_e_kh_km, 16, ENC_NA);
|
|
ptvcursor_add(cursor, hf_hdcp2_m, 16, ENC_NA);
|
|
break;
|
|
case ID_AKE_SEND_RRX:
|
|
ptvcursor_add(cursor, hf_hdcp2_r_rx, 8, ENC_BIG_ENDIAN);
|
|
break;
|
|
case ID_AKE_SEND_H_PRIME:
|
|
ptvcursor_add(cursor, hf_hdcp2_h_prime, 32, ENC_NA);
|
|
break;
|
|
case ID_LC_INIT:
|
|
ptvcursor_add(cursor, hf_hdcp2_r_n, 8, ENC_BIG_ENDIAN);
|
|
break;
|
|
case ID_LC_SEND_L_PRIME:
|
|
ptvcursor_add(cursor, hf_hdcp2_l_prime, 32, ENC_NA);
|
|
break;
|
|
case ID_SKE_SEND_EKS:
|
|
ptvcursor_add(cursor, hf_hdcp2_e_dkey_ks, 16, ENC_NA);
|
|
ptvcursor_add(cursor, hf_hdcp2_r_iv, 8, ENC_BIG_ENDIAN);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
ptvcursor_free(cursor);
|
|
return tvb_reported_length(tvb);
|
|
}
|
|
|
|
|
|
|
|
void
|
|
proto_register_hdcp(void)
|
|
{
|
|
guint i;
|
|
|
|
static hf_register_info hf[] = {
|
|
{ &hf_hdcp_addr,
|
|
{ "8bit I2C address", "hdcp.addr", FT_UINT8, BASE_HEX,
|
|
VALS(hdcp_addr), 0, NULL, HFILL } },
|
|
{ &hf_hdcp_reg,
|
|
{ "Register offset", "hdcp.reg", FT_UINT8, BASE_HEX,
|
|
VALS(hdcp_reg), 0, NULL, HFILL } },
|
|
{ &hf_hdcp_resp_in,
|
|
{ "Response In", "hdcp.resp_in", FT_FRAMENUM, BASE_NONE, NULL, 0x0,
|
|
"The response to this request is in this frame", HFILL }},
|
|
{ &hf_hdcp_resp_to,
|
|
{ "Response To", "hdcp.resp_to", FT_FRAMENUM, BASE_NONE, NULL, 0x0,
|
|
"This is the response to the request in this frame", HFILL }},
|
|
/* actually, the KSVs are only 40bits, but there's no FT_UINT40 type */
|
|
{ &hf_hdcp_a_ksv,
|
|
{ "Transmitter's key selection vector", "hdcp.a_ksv", FT_UINT64,
|
|
BASE_HEX, NULL, 0, NULL, HFILL } },
|
|
{ &hf_hdcp_b_ksv,
|
|
{ "Receiver's key selection vector", "hdcp.b_ksv", FT_UINT64,
|
|
BASE_HEX, NULL, 0, NULL, HFILL } },
|
|
{ &hf_hdcp_an,
|
|
{ "Random number for the session", "hdcp.an", FT_UINT64,
|
|
BASE_HEX, NULL, 0, NULL, HFILL } },
|
|
{ &hf_hdcp_hdmi_reserved,
|
|
{ "HDMI reserved", "hdcp.hdmi_reserved", FT_UINT8, BASE_DEC,
|
|
NULL, 0x80, NULL, HFILL } },
|
|
{ &hf_hdcp_repeater,
|
|
{ "Repeater", "hdcp.repeater", FT_UINT8, BASE_DEC,
|
|
NULL, 0x40, NULL, HFILL } },
|
|
{ &hf_hdcp_ksv_fifo,
|
|
{ "KSV fifo ready", "hdcp.ksv_fifo", FT_UINT8, BASE_DEC,
|
|
NULL, 0x20, NULL, HFILL } },
|
|
{ &hf_hdcp_fast_trans,
|
|
{ "Support for 400KHz transfers", "hdcp.fast_trans",
|
|
FT_UINT8, BASE_DEC, NULL, 0x10, NULL, HFILL } },
|
|
{ &hf_hdcp_features,
|
|
{ "Support for additional features", "hdcp.features",
|
|
FT_UINT8, BASE_DEC, NULL, 0x02, NULL, HFILL } },
|
|
{ &hf_hdcp_fast_reauth,
|
|
{ "Support for fast re-authentication", "hdcp.fast_reauth",
|
|
FT_UINT8, BASE_DEC, NULL, 0x01, NULL, HFILL } },
|
|
{ &hf_hdcp_hdmi_mode,
|
|
{ "HDMI mode", "hdcp.hdmi_mode",
|
|
FT_UINT16, BASE_DEC, NULL, 0x1000, NULL, HFILL } },
|
|
{ &hf_hdcp_max_casc_exc,
|
|
{ "Maximum cascading depth exceeded", "hdcp.max_casc_exc",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0800, NULL, HFILL } },
|
|
{ &hf_hdcp_depth,
|
|
{ "Repeater cascade depth", "hdcp.depth",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0700, NULL, HFILL } },
|
|
{ &hf_hdcp_max_devs_exc,
|
|
{ "Maximum number of devices exceeded", "hdcp.max_devs_exc",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0080, NULL, HFILL } },
|
|
{ &hf_hdcp_downstream,
|
|
{ "Number of downstream receivers", "hdcp.downstream",
|
|
FT_UINT16, BASE_DEC, NULL, 0x007F, NULL, HFILL } },
|
|
{ &hf_hdcp_link_vfy,
|
|
{ "Link verification response Ri'", "hdcp.link_vfy",
|
|
FT_UINT16, BASE_HEX, NULL, 0, NULL, HFILL } },
|
|
{ &hf_hdcp2_msg_id,
|
|
{ "Message ID", "hdcp2.msg_id", FT_UINT8, BASE_HEX,
|
|
VALS(hdcp_msg_id), 0, NULL, HFILL } },
|
|
{ &hf_hdcp2_r_tx,
|
|
{ "r_tx", "hdcp2.r_tx", FT_UINT64, BASE_HEX,
|
|
NULL, 0, NULL, HFILL } },
|
|
{ &hf_hdcp2_repeater,
|
|
{ "Repeater", "hdcp2.repeater", FT_BOOLEAN, 8,
|
|
NULL, 0x1, NULL, HFILL } },
|
|
{ &hf_hdcp2_cert_rcv_id,
|
|
{ "Receiver ID", "hdcp2.cert.rcv_id", FT_BYTES, BASE_NONE,
|
|
NULL, 0, NULL, HFILL } },
|
|
{ &hf_hdcp2_cert_n,
|
|
{ "Receiver RSA key n", "hdcp2.cert.n", FT_BYTES, BASE_NONE,
|
|
NULL, 0, NULL, HFILL } },
|
|
{ &hf_hdcp2_cert_e,
|
|
{ "Receiver RSA key e", "hdcp2.cert.e", FT_UINT24, BASE_HEX,
|
|
NULL, 0, NULL, HFILL } },
|
|
{ &hf_hdcp2_cert_rcv_sig,
|
|
{ "Receiver signature", "hdcp2.cert.rcv_sig", FT_BYTES,
|
|
BASE_NONE, NULL, 0, NULL, HFILL } },
|
|
{ &hf_hdcp2_e_kh_km,
|
|
{ "E_kh_km", "hdcp2.e_kh_km", FT_BYTES, BASE_NONE,
|
|
NULL, 0, NULL, HFILL } },
|
|
{ &hf_hdcp2_m,
|
|
{ "m", "hdcp2.m", FT_BYTES, BASE_NONE,
|
|
NULL, 0, NULL, HFILL } },
|
|
{ &hf_hdcp2_r_rx,
|
|
{ "r_rx", "hdcp2.r_rx", FT_UINT64, BASE_HEX,
|
|
NULL, 0, NULL, HFILL } },
|
|
{ &hf_hdcp2_h_prime,
|
|
{ "H'", "hdcp2.h_prime", FT_BYTES, BASE_NONE,
|
|
NULL, 0, NULL, HFILL } },
|
|
{ &hf_hdcp2_r_n,
|
|
{ "r_n", "hdcp2.r_n", FT_UINT64, BASE_HEX,
|
|
NULL, 0, NULL, HFILL } },
|
|
{ &hf_hdcp2_l_prime,
|
|
{ "L'", "hdcp2.l_prime", FT_BYTES, BASE_NONE,
|
|
NULL, 0, NULL, HFILL } },
|
|
{ &hf_hdcp2_e_dkey_ks,
|
|
{ "E_dkey_ks", "hdcp2.e_dkey_ks", FT_BYTES, BASE_NONE,
|
|
NULL, 0, NULL, HFILL } },
|
|
{ &hf_hdcp2_r_iv,
|
|
{ "r_iv", "hdcp2.r_iv", FT_UINT64, BASE_HEX,
|
|
NULL, 0, NULL, HFILL } }
|
|
};
|
|
|
|
static gint *ett[] = {
|
|
&ett_hdcp,
|
|
&ett_hdcp_cert
|
|
};
|
|
|
|
module_t *hdcp2_module;
|
|
|
|
msg_table = g_hash_table_new(g_direct_hash, g_direct_equal);
|
|
for(i=0; i<array_length(msg_info); i++) {
|
|
g_hash_table_insert(msg_table,
|
|
GUINT_TO_POINTER((guint)msg_info[i].id),
|
|
(const gpointer)(&msg_info[i]));
|
|
}
|
|
|
|
proto_hdcp = proto_register_protocol(
|
|
"High bandwidth Digital Content Protection", "HDCP", "hdcp");
|
|
proto_hdcp2 = proto_register_protocol(
|
|
"High bandwidth Digital Content Protection version 2",
|
|
"HDCPv2", "hdcp2");
|
|
|
|
hdcp2_module = prefs_register_protocol(proto_hdcp2, proto_reg_handoff_hdcp2);
|
|
prefs_register_bool_preference(hdcp2_module, "enable", "Enable dissector",
|
|
"Enable heuristic HDCPv2 dissector (default is false)",
|
|
&hdcp2_enable_dissector);
|
|
|
|
proto_register_field_array(proto_hdcp, hf, array_length(hf));
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
|
|
new_register_dissector("hdcp", dissect_hdcp, proto_hdcp);
|
|
new_register_dissector("hdcp2", dissect_hdcp2, proto_hdcp2);
|
|
|
|
register_init_routine(hdcp_init);
|
|
|
|
}
|
|
|
|
void
|
|
proto_reg_handoff_hdcp2(void)
|
|
{
|
|
static gboolean prefs_initialized = FALSE;
|
|
|
|
if (!prefs_initialized) {
|
|
heur_dissector_add ("tcp", dissect_hdcp2, proto_hdcp2);
|
|
|
|
prefs_initialized = TRUE;
|
|
}
|
|
|
|
proto_set_decoding(proto_hdcp2, hdcp2_enable_dissector);
|
|
}
|
|
|
|
/*
|
|
* Editor modelines - http://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:
|
|
*/
|