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DVB-S2-BB: Verify EIP CRC 

Verify the optional DVB-RCS2 Explicit Integrity Protection CRC32.
This commit is contained in:
John Thacker 2021-05-26 01:17:04 -04:00 committed by Wireshark GitLab Utility
parent 33c414a2c8
commit 99618b5b93
1 changed files with 8 additions and 2 deletions
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10
epan/dissectors/packet-dvb-s2-bb.c
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@ -130,6 +130,7 @@ static int hf_dvb_s2_bb_crc = -1;
static int hf_dvb_s2_bb_crc_status = -1;
static int hf_dvb_s2_bb_df = -1;
static int hf_dvb_s2_bb_eip_crc32 = -1;
static int hf_dvb_s2_bb_eip_crc32_status = -1;
static int hf_dvb_s2_bb_packetized = -1;
static int hf_dvb_s2_bb_transport = -1;
@ -1452,7 +1453,7 @@ static int dissect_dvb_s2_bb(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree
if (dvb_s2_df_dissection) {
while (bb_data_len) {
if (sync_flag == DVB_S2_BB_SYNC_EIP_CRC32 && bb_data_len == DVB_S2_BB_EIP_CRC32_LEN) {
proto_tree_add_item(dvb_s2_bb_tree, hf_dvb_s2_bb_eip_crc32, tvb, new_off, bb_data_len, ENC_NA);
proto_tree_add_checksum(dvb_s2_bb_tree, tvb, new_off, hf_dvb_s2_bb_eip_crc32, hf_dvb_s2_bb_eip_crc32_status, &ei_dvb_s2_bb_crc, pinfo, crc32_mpeg2_tvb_offset(tvb, DVB_S2_BB_HEADER_LEN, new_off - DVB_S2_BB_HEADER_LEN), ENC_BIG_ENDIAN, PROTO_CHECKSUM_VERIFY);
bb_data_len = 0;
new_off += DVB_S2_BB_EIP_CRC32_LEN;
} else {
@ -1779,7 +1780,12 @@ void proto_register_dvb_s2_modeadapt(void)
"EIP CRC32", "dvb-s2_bb.eip_crc32",
FT_UINT32, BASE_HEX, NULL, 0x0,
"Explicit Integrity Protection CRC32", HFILL}
}
},
{&hf_dvb_s2_bb_eip_crc32_status, {
"EIP CRC32 Status", "dvb-s2_bb.eip_crc32.status",
FT_UINT8, BASE_NONE, VALS(proto_checksum_vals), 0x0,
NULL, HFILL}
},
};
static gint *ett_bb[] = {