static void dissect_icp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
proto_tree *icp_tree , *payload_tree;
proto_item *ti;
guint8 opcode;
guint16 message_length;
guint32 request_number;
guint32 options;
col_set_str(pinfo->cinfo, COL_PROTOCOL, "ICP");
col_clear(pinfo->cinfo, COL_INFO);
opcode=tvb_get_guint8(tvb, 0);
message_length=tvb_get_ntohs(tvb, 2);
request_number=tvb_get_ntohl(tvb, 4);
col_add_fstr(pinfo->cinfo,COL_INFO,"Opcode: %s (%u), Req Nr: %u",
val_to_str_const(opcode, opcode_vals, "Unknown"), opcode,
request_number);
if (tree)
{
ti = proto_tree_add_item(tree,proto_icp, tvb, 0, message_length, ENC_NA);
icp_tree = proto_item_add_subtree(ti, ett_icp);
proto_tree_add_uint(icp_tree,hf_icp_opcode, tvb, 0, 1, opcode);
proto_tree_add_item(icp_tree,hf_icp_version, tvb, 1, 1, ENC_BIG_ENDIAN);
proto_tree_add_uint(icp_tree,hf_icp_length, tvb, 2, 2, message_length);
proto_tree_add_uint(icp_tree,hf_icp_request_nr, tvb, 4, 4,
request_number);
options=tvb_get_ntohl(tvb, 8);
if ( (opcode == CODE_ICP_OP_QUERY) && ((options & 0x80000000 ) != 0) )
{
proto_tree_add_item(icp_tree, hf_icp_option_hit_obj, tvb, 8, 4, ENC_NA);
}
if ( (opcode == CODE_ICP_OP_QUERY)&& ((options & 0x40000000 ) != 0) )
{
proto_tree_add_item(icp_tree, hf_icp_option_src_rtt, tvb, 8, 4, ENC_NA);
}
if ((opcode != CODE_ICP_OP_QUERY)&& ((options & 0x40000000 ) != 0))
{
proto_tree_add_item(icp_tree, hf_icp_option_src_rtt, tvb, 8, 4, ENC_NA);
proto_tree_add_item(icp_tree, hf_icp_rtt, tvb, 12, 4, ENC_BIG_ENDIAN);
}
proto_tree_add_item(icp_tree, hf_icp_sender_host_ip_address, tvb, 16, 4, ENC_BIG_ENDIAN);
payload_tree = proto_tree_add_subtree(icp_tree, tvb,
20, message_length - 20,
ett_icp_payload, NULL, "Payload");
dissect_icp_payload(tvb, pinfo, 20, payload_tree, opcode);
}
}
static void dissect_icp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
proto_tree *icp_tree , *payload_tree;
proto_item *ti , *payloadtf;
guint8 opcode;
guint16 message_length;
guint32 request_number;
guint32 options;
guint32 option_data;
col_set_str(pinfo->cinfo, COL_PROTOCOL, "ICP");
col_clear(pinfo->cinfo, COL_INFO);
opcode=tvb_get_guint8(tvb, 0);
message_length=tvb_get_ntohs(tvb, 2);
request_number=tvb_get_ntohl(tvb, 4);
if (check_col(pinfo->cinfo, COL_INFO))
{
col_add_fstr(pinfo->cinfo,COL_INFO,"Opcode: %s (%u), Req Nr: %u",
val_to_str(opcode, opcode_vals, "Unknown"), opcode,
request_number);
}
if (tree)
{
ti = proto_tree_add_item(tree,proto_icp, tvb, 0, message_length, ENC_NA);
icp_tree = proto_item_add_subtree(ti, ett_icp);
proto_tree_add_uint(icp_tree,hf_icp_opcode, tvb, 0, 1, opcode);
proto_tree_add_item(icp_tree,hf_icp_version, tvb, 1, 1, ENC_BIG_ENDIAN);
proto_tree_add_uint(icp_tree,hf_icp_length, tvb, 2, 2, message_length);
proto_tree_add_uint(icp_tree,hf_icp_request_nr, tvb, 4, 4,
request_number);
options=tvb_get_ntohl(tvb, 8);
if ( (opcode == CODE_ICP_OP_QUERY) && ((options & 0x80000000 ) != 0) )
{
proto_tree_add_text(icp_tree, tvb,8,4,
"option: ICP_FLAG_HIT_OBJ");
}
if ( (opcode == CODE_ICP_OP_QUERY)&& ((options & 0x40000000 ) != 0) )
{
proto_tree_add_text(icp_tree, tvb,8,4,
"option:ICP_FLAG_SRC_RTT");
}
if ((opcode != CODE_ICP_OP_QUERY)&& ((options & 0x40000000 ) != 0))
{
option_data=tvb_get_ntohl(tvb, 12);
proto_tree_add_text(icp_tree, tvb,8,8,
"option: ICP_FLAG_SCR_RTT RTT=%u",
option_data & 0x0000ffff);
}
proto_tree_add_text(icp_tree, tvb, 16, 4,
"Sender Host IP address %s",
tvb_ip_to_str(tvb, 16));
payloadtf = proto_tree_add_text(icp_tree, tvb,
20, message_length - 20,
"Payload");
payload_tree = proto_item_add_subtree(payloadtf, ett_icp_payload);
dissect_icp_payload(tvb, 20, payload_tree, opcode);
}
}