C++ proto_tree_add_ipv4函数代码示例

/*
 * Handles one Auto-RP map entry. Returns the new offset.
 */
static int do_auto_rp_map(tvbuff_t *tvb, int offset, proto_tree *auto_rp_tree)
{
        proto_item *ti;
        proto_tree *map_tree;
        guint8 group_count;
        guint32 rp_addr;      /* In network byte order */
        int i;

        rp_addr = tvb_get_ipv4(tvb, offset);
        group_count = tvb_get_guint8(tvb, offset + 5);

                               /* sizeof map header + n * sizeof encoded group addresses */
        ti = proto_tree_add_text(auto_rp_tree, tvb, offset, 6 + group_count * 6,
                                 "RP %s: %u group%s", ip_to_str((void *)&rp_addr),
                                 group_count, plurality(group_count, "", "s"));
        map_tree = proto_item_add_subtree(ti, ett_auto_rp_map);

        proto_tree_add_ipv4(map_tree, hf_auto_rp_rp_addr, tvb, offset, 4, rp_addr);
        offset += 4;
        proto_tree_add_uint(map_tree, hf_auto_rp_pim_ver, tvb, offset, 1, tvb_get_guint8(tvb, offset));
        offset++;
        proto_tree_add_text(map_tree, tvb, offset, 1, "Number of groups this RP maps to: %u", group_count);
        offset++;

        for (i = 0; i < group_count; i++) {
                proto_item *gi;
                proto_tree *grp_tree;
                guint8 sign, mask_len;
                guint32 group_addr;     /* In network byte order */

                sign = tvb_get_guint8(tvb, offset);
                mask_len = tvb_get_guint8(tvb, offset + 1);
                group_addr = tvb_get_ipv4(tvb, offset + 2);
                gi = proto_tree_add_text(map_tree, tvb, offset, 6, "Group %s/%u (%s)",
                                         ip_to_str((void *)&group_addr), mask_len,
                                         val_to_str(sign&AUTO_RP_SIGN_MASK, auto_rp_mask_sign_vals, ""));
                grp_tree = proto_item_add_subtree(gi, ett_auto_rp_group);

                proto_tree_add_uint(grp_tree, hf_auto_rp_prefix_sgn, tvb, offset, 1, sign);
                offset++;
                proto_tree_add_uint(grp_tree, hf_auto_rp_mask_len, tvb, offset, 1, mask_len);
                offset++;
                proto_tree_add_ipv4(grp_tree, hf_auto_rp_group_prefix, tvb, offset, 4, group_addr);
                offset += 4;

        }

        return offset;
}

static int
dissect_bp_address(tvbuff_t *tvb, int offset, proto_tree *tree, int hfindex)
{
	guint32 type;
	guint32 ipaddr;


	type = tvb_get_ntohl(tvb, offset);

	offset = dissect_rpc_uint32(tvb, tree, hf_bootparams_addresstype, offset);

	switch(type){
	case 1:
		ipaddr = ((tvb_get_guint8(tvb, offset+3 )&0xff)<<24)
			|((tvb_get_guint8(tvb, offset+7 )&0xff)<<16)
			|((tvb_get_guint8(tvb, offset+11)&0xff)<<8 )
			|((tvb_get_guint8(tvb, offset+15)&0xff) );
		proto_tree_add_ipv4(tree, hfindex, tvb,
			offset, 16, g_ntohl(ipaddr));
		offset += 16;
		break;

	default:
		break;
	}

	return offset;
}

static void msproxy_sub_dissector( tvbuff_t *tvb, packet_info *pinfo,
                                   proto_tree *tree) {

    /* Conversation dissector called from TCP or UDP dissector. Decode and	*/
    /* display the msproxy header, the pass the rest of the data to the tcp	*/
    /* or udp port decode routine to  handle the payload.			*/

    guint32 *ptr;
    redirect_entry_t *redirect_info;
    conversation_t *conversation;
    proto_tree      *msp_tree;
    proto_item      *ti;

    conversation = find_conversation( pinfo->fd->num, &pinfo->src, &pinfo->dst,
                                      pinfo->ptype, pinfo->srcport, pinfo->destport, 0);

    DISSECTOR_ASSERT( conversation);	/* should always find a conversation */

    redirect_info = conversation_get_proto_data(conversation,
                    proto_msproxy);

    col_set_str(pinfo->cinfo, COL_PROTOCOL, "MS Proxy");

    if (check_col(pinfo->cinfo, COL_INFO))
        col_set_str(pinfo->cinfo, COL_INFO,
                    (( redirect_info->proto == PT_TCP) ? "TCP stream" :
                     "UDP packets"));

    if ( tree) {
        ti = proto_tree_add_item( tree, proto_msproxy, tvb, 0, 0,
                                  FALSE );

        msp_tree = proto_item_add_subtree(ti, ett_msproxy);

        proto_tree_add_uint( msp_tree, hf_msproxy_dstport, tvb, 0, 0,
                             redirect_info->remote_port);

        proto_tree_add_ipv4( msp_tree, hf_msproxy_dstaddr, tvb, 0, 0,
                             redirect_info->remote_addr);

    }

    /* set pinfo->{src/dst port} and call the UDP sub-dissector lookup */

    if ( pinfo->srcport == redirect_info->clnt_port)
        ptr = &pinfo->destport;
    else
        ptr = &pinfo->srcport;

    *ptr = redirect_info->remote_port;

    if ( redirect_info->proto == PT_TCP)
        decode_tcp_ports( tvb, 0, pinfo, tree, pinfo->srcport,
                          pinfo->destport, NULL);
    else
        decode_udp_ports( tvb, 0, pinfo, tree, pinfo->srcport,
                          pinfo->destport, -1);

    *ptr = redirect_info->server_int_port;
}

static void
decode_iei_ip_address(nsip_ie_t *ie, build_info_t *bi, int ie_start_offset) {
  guint8 addr_type;
  guint32 ip4_addr;
  struct e_in6_addr ip6_addr;

  addr_type = tvb_get_guint8(bi->tvb, bi->offset);
  proto_tree_add_item(bi->nsip_tree, hf_nsip_ip_address_type,
                          bi->tvb, bi->offset, 1, ENC_BIG_ENDIAN);
  switch (addr_type) {
  case NSIP_IP_ADDRESS_TYPE_IPV4:
    ie->total_length = 2 + ipv4_element.address_length;
    ip4_addr = tvb_get_ipv4(bi->tvb, bi->offset+1);
    proto_tree_add_ipv4(bi->nsip_tree, hf_nsip_ip_address_ipv4,
        bi->tvb, ie_start_offset, ie->total_length,
        ip4_addr);
    break;
  case NSIP_IP_ADDRESS_TYPE_IPV6:
    ie->total_length = 2 + ipv6_element.address_length;
    tvb_get_ipv6(bi->tvb, bi->offset+1, &ip6_addr);
    proto_tree_add_ipv6(bi->nsip_tree, hf_nsip_ip_address_ipv4,
        bi->tvb, ie_start_offset, ie->total_length,
        (guint8 *)&ip6_addr);
    break;
  default:
    return; /* error */
  }
  bi->offset += ie->value_length;
}

static void dissect_vektor_igrp (tvbuff_t *tvb, proto_tree *igrp_vektor_tree, guint8 network)
{
  guint8 *ptr_addr,addr[5];
  address ip_addr;

  addr[0]=network;
  addr[1]=tvb_get_guint8(tvb,0);
  addr[2]=tvb_get_guint8(tvb,1);
  addr[3]=tvb_get_guint8(tvb,2);
  addr[4]=0;

  ptr_addr=addr;
  if (network==0) ptr_addr=&addr[1];

  SET_ADDRESS(&ip_addr, AT_IPv4, 4, ptr_addr);
  igrp_vektor_tree = proto_tree_add_subtree_format(igrp_vektor_tree, tvb, 0 ,14,
                                                   ett_igrp_net, NULL, "Entry for network %s", address_to_str(wmem_packet_scope(), &ip_addr));
  proto_tree_add_ipv4(igrp_vektor_tree, hf_igrp_network, tvb, 0, 3, *((guint32*)ptr_addr));
  proto_tree_add_item(igrp_vektor_tree, hf_igrp_delay, tvb, 3, 3, ENC_BIG_ENDIAN);
  proto_tree_add_item(igrp_vektor_tree, hf_igrp_bandwidth, tvb, 6, 3, ENC_BIG_ENDIAN);
  proto_tree_add_uint_format_value(igrp_vektor_tree, hf_igrp_mtu, tvb, 9, 2, tvb_get_ntohs(tvb,9), "%d  bytes", tvb_get_ntohs(tvb,9));
  proto_tree_add_item(igrp_vektor_tree, hf_igrp_reliability, tvb, 11, 1, ENC_BIG_ENDIAN);
  proto_tree_add_item(igrp_vektor_tree, hf_igrp_load, tvb, 12, 1, ENC_BIG_ENDIAN);
  proto_tree_add_item(igrp_vektor_tree, hf_igrp_hop_count, tvb, 13, 1, ENC_BIG_ENDIAN);
}

static int
zebra_route(proto_tree *tree, tvbuff_t *tvb, int offset, guint16 len,
	    guint8 family)
{
	guint32	prefix4;
	guint8 message, prefixlen, buffer6[16];

	proto_tree_add_item(tree, hf_zebra_type, tvb,
			    offset, 1, ENC_BIG_ENDIAN);
	offset += 1;

	proto_tree_add_item(tree, hf_zebra_rtflags, tvb,
			    offset, 1, ENC_BIG_ENDIAN);
	offset += 1;

	message = tvb_get_guint8(tvb, offset);
	offset = zebra_route_message(tree, tvb, offset, message);

	prefixlen = tvb_get_guint8(tvb, offset);
	proto_tree_add_uint(tree, hf_zebra_prefixlen, tvb,
			    offset, 1, prefixlen);
	offset += 1;

	if (family == ZEBRA_FAMILY_IPV6) {
		memset(buffer6, '\0', sizeof buffer6);
		tvb_memcpy(tvb, buffer6, offset,
			   MIN((unsigned) PSIZE(prefixlen), sizeof buffer6));
		proto_tree_add_ipv6(tree, hf_zebra_prefix6,
				    tvb, offset, PSIZE(prefixlen), buffer6);
	}else {
		prefix4 = 0;
		tvb_memcpy(tvb, (guint8 *)&prefix4, offset,
			   MIN((unsigned) PSIZE(prefixlen), sizeof prefix4));
		proto_tree_add_ipv4(tree, hf_zebra_prefix4,
				    tvb, offset, PSIZE(prefixlen), prefix4);
	}
	offset += PSIZE(prefixlen);

	if (message & ZEBRA_ZAPI_MESSAGE_NEXTHOP) {
		offset = zebra_route_nexthop(tree, tvb, offset, len);
	}
	if (message & ZEBRA_ZAPI_MESSAGE_IFINDEX) {
		offset = zebra_route_ifindex(tree, tvb, offset, len);
	}
	if (message & ZEBRA_ZAPI_MESSAGE_DISTANCE) {
		proto_tree_add_item(tree, hf_zebra_distance,
				    tvb, offset, 1, ENC_BIG_ENDIAN);
		offset += 1;
	}
	if (message & ZEBRA_ZAPI_MESSAGE_METRIC) {
		proto_tree_add_item(tree, hf_zebra_metric,
				    tvb, offset, 4, ENC_BIG_ENDIAN);
		offset += 4;
	}
	return offset;
}

/*
 * dissect the description of link in roofnet
 */
static void dissect_roofnet_link(proto_tree *tree, tvbuff_t *tvb, guint *offset, guint link)
{
  proto_item *it= NULL;
  proto_tree *subtree= NULL;

  ptvcursor_t *cursor= NULL;

  guint32 addr_src= 0;
  guint32 addr_dst= 0;

  addr_src= tvb_get_ipv4(tvb, *offset + ROOFNET_LINK_OFFSET_SRC);
  addr_dst= tvb_get_ipv4(tvb, *offset + ROOFNET_LINK_OFFSET_DST);

  it = proto_tree_add_text(tree, tvb, *offset, ROOFNET_LINK_LEN,
			    "link: %u, src: %s, dst: %s",
			    link,
			    (char*)get_hostname(addr_src),
			    (char*)get_hostname(addr_dst));
  subtree= proto_item_add_subtree(it, ett_roofnet_link);

  proto_tree_add_ipv4(subtree, hf_roofnet_link_src, tvb, *offset, 4, addr_src);
  *offset += 4;

  cursor = ptvcursor_new(subtree, tvb, *offset);

  ptvcursor_add(cursor, hf_roofnet_link_forward, 4, FALSE);
  ptvcursor_add(cursor, hf_roofnet_link_rev, 4, FALSE);
  ptvcursor_add(cursor, hf_roofnet_link_seq, 4, FALSE);
  ptvcursor_add(cursor, hf_roofnet_link_age, 4, FALSE);

  ptvcursor_free(cursor);

  *offset = ptvcursor_current_offset(cursor);
  proto_tree_add_ipv4(subtree, hf_roofnet_link_dst, tvb, *offset, 4, addr_dst);
  /* don't increment offset here because the dst of this link is the src of the next one */
}

static int
parse_teredo_orig(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree,
			int offset, e_teredohdr *teredoh)
{
	proto_item *ti = NULL;

	col_append_sep_str (pinfo->cinfo, COL_INFO, ", ",
					"Origin indication");

	if (tree) {
		ti = proto_tree_add_item(tree, hf_teredo_orig, tvb, offset,
						8, ENC_NA);
		tree = proto_item_add_subtree(ti, ett_teredo_orig);
	}
	offset += 2;

	teredoh->th_orgport = tvb_get_ntohs(tvb, offset);
	if (tree) {
		/*
		 * The "usual arithmetic conversions" will convert
		 * "teredoh->th_orgport" to an "int" (because all
		 * "unsigned short" values will fit in an "int"),
		 * which will zero-extend it.  This means that
		 * complementing it will turn all the zeroes in
		 * the upper 16 bits into ones; we just want the
		 * lower 16 bits (containing the port number)
		 * complemented, with the result zero-extended.
		 *
		 * That's what the cast is for.
		 */
		proto_tree_add_uint(tree, hf_teredo_orig_port, tvb,
					offset, 2,
					(guint16)~teredoh->th_orgport);
	}
	offset += 2;

	teredoh->th_iporgaddr = tvb_get_ipv4(tvb, offset);
	if (tree) {
		proto_tree_add_ipv4(tree, hf_teredo_orig_addr, tvb,
					offset, 4, ~teredoh->th_iporgaddr);
	}
	offset += 4;

	return offset;
}

static void dissect_vektor_igrp (tvbuff_t *tvb, proto_tree *igrp_vektor_tree, guint8 network)
{
  union {
    guint8 addr_bytes[4];
    guint32 addr_word;
  } addr;
  address ip_addr;

  if (network != 0) {
    /*
     * Interior route; network is the high-order byte, and the three
     * bytes in the vector are the lower 3 bytes.
     */
    addr.addr_bytes[0]=network;
    addr.addr_bytes[1]=tvb_get_guint8(tvb,0);
    addr.addr_bytes[2]=tvb_get_guint8(tvb,1);
    addr.addr_bytes[3]=tvb_get_guint8(tvb,2);
  } else {
    /*
     * System or exterior route; the three bytes in the vector are
     * the three high-order bytes, and the low-order byte is 0.
     */
    addr.addr_bytes[0]=tvb_get_guint8(tvb,0);
    addr.addr_bytes[1]=tvb_get_guint8(tvb,1);
    addr.addr_bytes[2]=tvb_get_guint8(tvb,2);
    addr.addr_bytes[3]=0;
  }

  set_address(&ip_addr, AT_IPv4, 4, &addr);
  igrp_vektor_tree = proto_tree_add_subtree_format(igrp_vektor_tree, tvb, 0 ,14,
                                                   ett_igrp_net, NULL, "Entry for network %s", address_to_str(wmem_packet_scope(), &ip_addr));
  proto_tree_add_ipv4(igrp_vektor_tree, hf_igrp_network, tvb, 0, 3, addr.addr_word);
  proto_tree_add_item(igrp_vektor_tree, hf_igrp_delay, tvb, 3, 3, ENC_BIG_ENDIAN);
  proto_tree_add_item(igrp_vektor_tree, hf_igrp_bandwidth, tvb, 6, 3, ENC_BIG_ENDIAN);
  proto_tree_add_uint_format_value(igrp_vektor_tree, hf_igrp_mtu, tvb, 9, 2, tvb_get_ntohs(tvb,9), "%d  bytes", tvb_get_ntohs(tvb,9));
  proto_tree_add_item(igrp_vektor_tree, hf_igrp_reliability, tvb, 11, 1, ENC_BIG_ENDIAN);
  proto_tree_add_item(igrp_vektor_tree, hf_igrp_load, tvb, 12, 1, ENC_BIG_ENDIAN);
  proto_tree_add_item(igrp_vektor_tree, hf_igrp_hop_count, tvb, 13, 1, ENC_BIG_ENDIAN);
}

static void 
dissect_tpcp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
	tpcpdu_t tpcph;
	proto_tree *tpcp_tree = NULL, *field_tree = NULL;
	proto_item *ti, *tf;
	guint8 length = TPCP_VER_1_LENGTH;
	
	col_set_str(pinfo->cinfo, COL_PROTOCOL, "TPCP");
	col_clear(pinfo->cinfo, COL_INFO);
	
	/* need to find out which version!! */
	tpcph.version = tvb_get_guint8(tvb, 0);
	/* as version 1 and 2 are so similar use the same structure, just don't use as much for version 1*/
	if (tpcph.version == TPCP_VER_1) {
		length = TPCP_VER_1_LENGTH;
		tvb_memcpy(tvb, (guint8 *) &tpcph, 0, length);
	} else if (tpcph.version == TPCP_VER_2){
		length = TPCP_VER_2_LENGTH;
		tvb_memcpy(tvb, (guint8 *) &tpcph, 0, length);
	}
	
	
	tpcph.id = g_ntohs(tpcph.id);
	tpcph.flags = g_ntohs(tpcph.flags);
	tpcph.cport = g_ntohs(tpcph.cport);
	
	if (check_col(pinfo->cinfo, COL_INFO))
		col_add_fstr(pinfo->cinfo, COL_INFO,"%s id %d CPort %s CIP %s SIP %s",
		val_to_str(tpcph.type, type_vals, "Unknown"),
		tpcph.id,
		get_udp_port(tpcph.cport),
		ip_to_str((guint8 *)&tpcph.caddr),
		ip_to_str((guint8 *)&tpcph.saddr));
	
	if (tree) {
		ti = proto_tree_add_protocol_format(tree, proto_tpcp, tvb, 0, length,
			"Alteon WebSystems - Transparent Proxy Cache Protocol");
		
		tpcp_tree = proto_item_add_subtree(ti, ett_tpcp);
		
		proto_tree_add_item(tpcp_tree, hf_tpcp_version, tvb, 0, 1, tpcph.version);
		
		proto_tree_add_uint_format(tpcp_tree, hf_tpcp_type, tvb, 1, 1, tpcph.type,
			"Type: %s (%d)", 
			val_to_str(tpcph.type, type_vals, "Unknown"), tpcph.type); 
		
		/* flags next , i'll do that when I can work out how to do it :-(   */
		tf = proto_tree_add_text(tpcp_tree, tvb, 2, 2, "Flags: 0x%04x",tpcph.flags);
		
		field_tree = proto_item_add_subtree(tf, ett_tpcp_flags);	
		proto_tree_add_boolean(field_tree, hf_tpcp_flags_tcp, tvb, 2, 2, tpcph.flags);
		proto_tree_add_boolean(field_tree, hf_tpcp_flags_redir, tvb, 2,2, tpcph.flags);
		proto_tree_add_boolean(field_tree, hf_tpcp_flags_xon, tvb, 2, 2, tpcph.flags);
		proto_tree_add_boolean(field_tree, hf_tpcp_flags_xoff, tvb, 2, 2, tpcph.flags);
		
		proto_tree_add_uint(tpcp_tree, hf_tpcp_id, tvb, 4, 2, tpcph.id);
		
		proto_tree_add_uint_format(tpcp_tree, hf_tpcp_cport, tvb, 6, 2, tpcph.cport,
			"Client Source port: %s", get_udp_port(tpcph.cport));
		
		proto_tree_add_ipv4(tpcp_tree, hf_tpcp_caddr, tvb, 8, 4, tpcph.caddr); 
		
		proto_tree_add_ipv4(tpcp_tree, hf_tpcp_saddr, tvb, 12, 4, tpcph.saddr); 
		
		if (tpcph.version == TPCP_VER_2) {
			proto_tree_add_ipv4(tpcp_tree, hf_tpcp_vaddr, tvb, 16, 4, tpcph.vaddr); 
			proto_tree_add_ipv4(tpcp_tree, hf_tpcp_rasaddr, tvb, 20, 4, tpcph.rasaddr); 
			proto_tree_add_text(tpcp_tree, tvb, 24, 4, "Signature: %u", tpcph.signature);
		}
		
	}
}

//.........这里部分代码省略.........

		case ZEBRA_IPV4_ROUTE_ADD:
		case ZEBRA_IPV4_ROUTE_DELETE:
			proto_tree_add_item(tree, hf_zebra_type, tvb,
				 offset, 1, ENC_BIG_ENDIAN);
			offset += 1;

			proto_tree_add_item(tree, hf_zebra_rtflags, tvb,
				 offset, 1, ENC_BIG_ENDIAN);
			offset += 1;

			message = tvb_get_guint8(tvb, offset);
			ti = proto_tree_add_uint(tree, hf_zebra_message, tvb,
				 offset, 1, message);
			msg_tree = proto_item_add_subtree(ti, ett_message);
			proto_tree_add_boolean(msg_tree, hf_zebra_msg_nexthop,
				tvb, offset, 1, message);
			proto_tree_add_boolean(msg_tree, hf_zebra_msg_index,
				tvb, offset, 1, message);
			proto_tree_add_boolean(msg_tree, hf_zebra_msg_distance,
				tvb, offset, 1, message);
			proto_tree_add_boolean(msg_tree, hf_zebra_msg_metric,
				tvb, offset, 1, message);
			offset += 1;

			prefixlen = tvb_get_guint8(tvb, offset);
			proto_tree_add_uint(tree, hf_zebra_prefixlen, tvb,
				 offset, 1, prefixlen);
			offset += 1;

			prefix4 = 0;
			tvb_memcpy(tvb, (guint8 *)&prefix4, offset,
			    MIN((unsigned) PSIZE(prefixlen), sizeof prefix4));
			proto_tree_add_ipv4(tree, hf_zebra_prefix4,
				tvb, offset, PSIZE(prefixlen), prefix4);
			offset += PSIZE(prefixlen);

			if (message & ZEBRA_ZAPI_MESSAGE_NEXTHOP) {
				i = tvb_get_guint8(tvb, offset);
				proto_tree_add_uint(tree, hf_zebra_nexthopnum,
					tvb, offset, 1, i);
				offset += 1;

				if (i>len) break; /* Sanity */

				while (i--) {
					proto_tree_add_item(tree,
						hf_zebra_nexthop4, tvb,
						offset, 4, ENC_BIG_ENDIAN);
					offset += 4;
				}
			}
			if (message & ZEBRA_ZAPI_MESSAGE_IFINDEX) {
				i = tvb_get_guint8(tvb, offset);
				proto_tree_add_uint(tree, hf_zebra_indexnum,
					tvb, offset, 1, i);
				offset += 1;

				if (i>len) break; /* Sanity */

				while (i--) {
					proto_tree_add_item(tree,
						hf_zebra_index, tvb,
						offset, 4, ENC_BIG_ENDIAN);
					offset += 4;
				}

static void
dissect_aodv_rreq(tvbuff_t *tvb, packet_info *pinfo, proto_tree *aodv_tree,
		  proto_item *ti, gboolean is_ipv6)
{
    int offset = 1;
    proto_item *tj;
    proto_tree *aodv_flags_tree;
    guint8 flags;
    guint8 hop_count;
    guint32 rreq_id;
    guint32 dest_addr_v4;
    struct e_in6_addr dest_addr_v6;
    guint32 dest_seqno;
    guint32 orig_addr_v4;
    struct e_in6_addr orig_addr_v6;
    guint32 orig_seqno;
    int extlen;

    flags = tvb_get_guint8(tvb, offset);
    if (aodv_tree) {
	tj = proto_tree_add_text(aodv_tree, tvb, offset, 1, "Flags:");
	aodv_flags_tree = proto_item_add_subtree(tj, ett_aodv_flags);
	proto_tree_add_boolean(aodv_flags_tree, hf_aodv_flags_rreq_join,
			       tvb, offset, 1, flags);
	proto_tree_add_boolean(aodv_flags_tree, hf_aodv_flags_rreq_repair,
			       tvb, offset, 1, flags);
	proto_tree_add_boolean(aodv_flags_tree, hf_aodv_flags_rreq_gratuitous,
			       tvb, offset, 1, flags);
	proto_tree_add_boolean(aodv_flags_tree, hf_aodv_flags_rreq_destinationonly,
			       tvb, offset, 1, flags);
	proto_tree_add_boolean(aodv_flags_tree, hf_aodv_flags_rreq_unknown,
			       tvb, offset, 1, flags);
	if (flags & RREQ_JOIN)
	    proto_item_append_text(tj, " J");
	if (flags & RREQ_REP)
	    proto_item_append_text(tj, " R");
	if (flags & RREQ_GRATRREP)
	    proto_item_append_text(tj, " G");
	if (flags & RREQ_DESTONLY)
	    proto_item_append_text(tj, " D");
	if (flags & RREQ_UNKNSEQ)
	    proto_item_append_text(tj, " U");
    }
    offset += 2;	/* skip reserved byte */

    hop_count = tvb_get_guint8(tvb, offset);
    if (aodv_tree)
	proto_tree_add_uint(aodv_tree, hf_aodv_hopcount, tvb, offset, 1,
			    hop_count);
    offset += 1;

    rreq_id = tvb_get_ntohl(tvb, offset);
    if (aodv_tree)
        proto_tree_add_uint(aodv_tree, hf_aodv_rreq_id, tvb, offset, 4,
					rreq_id);
    offset += 4;

    if (is_ipv6) {
        tvb_get_ipv6(tvb, offset, &dest_addr_v6);
        if (aodv_tree) {
            proto_tree_add_ipv6(aodv_tree, hf_aodv_dest_ipv6, tvb, offset,
                                INET6_ADDRLEN, (guint8 *)&dest_addr_v6);
            proto_item_append_text(ti, ", Dest IP: %s",
                                   ip6_to_str(&dest_addr_v6));
        }
        col_append_fstr(pinfo->cinfo, COL_INFO, ", D: %s",
                        ip6_to_str(&dest_addr_v6));
        offset += INET6_ADDRLEN;
    } else {
        dest_addr_v4 = tvb_get_ipv4(tvb, offset);
        if (aodv_tree) {
            proto_tree_add_ipv4(aodv_tree, hf_aodv_dest_ip, tvb, offset, 4,
                                dest_addr_v4);
            proto_item_append_text(ti, ", Dest IP: %s",
                                   ip_to_str((guint8 *)&dest_addr_v4));
        }
        col_append_fstr(pinfo->cinfo, COL_INFO, ", D: %s",
                        ip_to_str((guint8 *)&dest_addr_v4));
        offset += 4;
    }

    dest_seqno = tvb_get_ntohl(tvb, offset);
    if (aodv_tree)
        proto_tree_add_uint(aodv_tree, hf_aodv_dest_seqno, tvb, offset, 4,
					dest_seqno);
    offset += 4;

    if (is_ipv6) {
	tvb_get_ipv6(tvb, offset, &orig_addr_v6);
	if (aodv_tree) {
	    proto_tree_add_ipv6(aodv_tree, hf_aodv_orig_ipv6, tvb, offset,
				INET6_ADDRLEN, (guint8 *)&orig_addr_v6);
	    proto_item_append_text(ti, ", Orig IP: %s",
				   ip6_to_str(&orig_addr_v6));
	}
    col_append_fstr(pinfo->cinfo, COL_INFO, ", O: %s",
		    ip6_to_str(&orig_addr_v6));
	offset += INET6_ADDRLEN;
    } else {
	orig_addr_v4 = tvb_get_ipv4(tvb, offset);
//.........这里部分代码省略.........

/* dissector of each payload */
static int
dissect_xtp_aseg(tvbuff_t *tvb, proto_tree *tree, guint32 offset) {
	guint32 len = tvb_length_remaining(tvb, offset);
	guint32 start = offset;
	proto_item *ti, *ti2, *top_ti;
	proto_tree *xtp_subtree;
	struct xtp_ip_addr_seg aseg[1];
	int error = 0;

	top_ti = proto_tree_add_text(tree, tvb, offset, len, "Address Segment");
	xtp_subtree = proto_item_add_subtree(top_ti, ett_xtp_aseg);

	if (len < XTP_NULL_ADDR_SEG_LEN) {
		proto_item_append_text(top_ti, ", bogus length(%u, must be at least %u)",
			len, XTP_NULL_ADDR_SEG_LEN);
		return 0;
	}

	/** parse common fields **/
	/* alen(2) */
	aseg->alen = tvb_get_ntohs(tvb, offset);
	offset += 2;
	/* adomain(1) */
	aseg->adomain = tvb_get_guint8(tvb, offset);
	offset++;
	/* aformat(1) */
	aseg->aformat = tvb_get_guint8(tvb, offset);

	/** display common fields **/
	offset = start;
	/* alen(2) */
	ti = proto_tree_add_uint(xtp_subtree, hf_xtp_aseg_alen,
				tvb, offset, 2, aseg->alen);
	offset += 2;
	if (aseg->alen > len) {
		proto_item_append_text(ti, ", bogus length(%u, must be at most %u)",
			aseg->alen, len);
		error = 1;
	}
	/* adomain(1) */
	proto_tree_add_uint(xtp_subtree, hf_xtp_aseg_adomain,
			tvb, offset, 1, aseg->adomain);
	offset++;
	/* aformat(1) */
	ti2 = proto_tree_add_uint(xtp_subtree, hf_xtp_aseg_aformat,
			tvb, offset, 1, aseg->aformat);
	offset++;
	switch (aseg->aformat) {
	case 0:
		if (aseg->alen != XTP_NULL_ADDR_SEG_LEN) {
			proto_item_append_text(ti, ", bogus length(%u, must be %u)",
				aseg->alen, XTP_NULL_ADDR_SEG_LEN);
			error = 1;
		}
		break;
	case 1:
		if (aseg->alen != XTP_IP_ADDR_SEG_LEN) {
			proto_item_append_text(ti, ", bogus length(%u, must be %u)",
				aseg->alen, XTP_IP_ADDR_SEG_LEN);
			error = 1;
		}
		break;
	default:
		if (aseg->aformat < 128) {
			proto_item_append_text(ti2,
				", Unsupported aformat(%u)", aseg->aformat);
			error = 1;
		}
		break;
	}

	if (error)
		return (offset - start);

	/** parse and display each address fileds */
	switch (aseg->aformat) {
	case 0:
		/* address(4) */
		aseg->dsthost = tvb_get_ntohl(tvb, offset);
		proto_tree_add_uint(xtp_subtree, hf_xtp_aseg_address,
				tvb, offset, 4, aseg->dsthost);
		offset += 4;
		break;
	case 1:
		/* dsthost(4) */
		aseg->dsthost = tvb_get_ipv4(tvb, offset);
		proto_tree_add_ipv4(xtp_subtree, hf_xtp_aseg_dsthost,
				tvb, offset, 4, aseg->dsthost);
		offset += 4;
		/* srchost(4) */
		aseg->srchost = tvb_get_ipv4(tvb, offset);
		proto_tree_add_ipv4(xtp_subtree, hf_xtp_aseg_srchost,
				tvb, offset, 4, aseg->srchost);
		offset += 4;
		/* dstport(2) */
		aseg->dstport = tvb_get_ntohs(tvb, offset);
		proto_tree_add_uint(xtp_subtree, hf_xtp_aseg_dstport,
				tvb, offset, 2, aseg->dstport);
		offset += 2;
//.........这里部分代码省略.........

static int
dissect_ppcap_source_address(tvbuff_t *tvb, packet_info *pinfo, proto_tree * ppcap_tree1, int offset)
{
	int key1;
	guint16 msg_len;
	msg_len = tvb_get_ntohs(tvb, offset);
	proto_tree_add_item( ppcap_tree1, hf_ppcap_length, tvb, offset, 2, ENC_BIG_ENDIAN);
	offset  = offset + 2;
	proto_tree_add_item(ppcap_tree1, hf_ppcap_reserved, tvb, offset, 2, ENC_BIG_ENDIAN);
	offset += 2;

	key1 = tvb_get_ntohs(tvb, offset);
	proto_tree_add_item(ppcap_tree1, hf_ppcap_address_type, tvb, offset, 2, ENC_BIG_ENDIAN);
	offset += 2;

	if (key1 == 1)
	{
		proto_tree_add_item(ppcap_tree1, hf_ppcap_ssn, tvb, offset, 1, ENC_BIG_ENDIAN);
		offset += 1;
		proto_tree_add_item(ppcap_tree1, hf_ppcap_spc, tvb, offset, 3, ENC_BIG_ENDIAN);
		/*src_addr1 = (guint32 )tvb_get_ntoh24(tvb, offset);*/
		mtp3_addr_opc = wmem_new0(wmem_packet_scope(), mtp3_addr_pc_t);
		mtp3_addr_opc->pc = (guint32 )tvb_get_ntoh24(tvb, offset);
		mtp3_addr_opc->type = ITU_STANDARD;
		mtp3_addr_opc->ni = 0;
		/*SET_ADDRESS(&pinfo->net_src, AT_SS7PC, sizeof(mtp3_addr_pc_t), (guint8 *) mtp3_addr_opc);*/
		SET_ADDRESS(&pinfo->src, AT_SS7PC, sizeof(mtp3_addr_pc_t), (guint8 *) mtp3_addr_opc);
		if (msg_len%4)
			msg_len = msg_len + (4 - (msg_len%4));

		offset += msg_len-1;
		return offset;
	}
	else if (key1 == 2)
	{
		proto_tree_add_item(ppcap_tree1, hf_ppcap_opc, tvb, offset, msg_len, ENC_BIG_ENDIAN);

		/*src_addr1 = (guint32 )tvb_get_ntoh24(tvb, offset);*/
		mtp3_addr_opc = wmem_new0(wmem_packet_scope(), mtp3_addr_pc_t);
		mtp3_addr_opc->pc = tvb_get_ntohl(tvb, offset);
		mtp3_addr_opc->type = ITU_STANDARD;
		mtp3_addr_opc->ni = 0;
		SET_ADDRESS(&pinfo->src, AT_SS7PC, sizeof(mtp3_addr_pc_t), (guint8 *) mtp3_addr_opc);
	}
	else if (key1 == 3)
	{
		if (msg_len%16 != 0)
		{

			proto_tree_add_ipv4(ppcap_tree1, hf_ppcap_source_ip_address1, tvb, offset, msg_len, tvb_get_ipv4(tvb, offset));
			TVB_SET_ADDRESS(&pinfo->net_src, AT_IPv4, tvb, offset, 4);
			COPY_ADDRESS_SHALLOW(&pinfo->src, &pinfo->net_src);
		}
		else
		{
			struct e_in6_addr value;
			tvb_get_ipv6(tvb, offset, &value);
			proto_tree_add_ipv6(ppcap_tree1, hf_ppcap_source_ip_address2, tvb, offset, msg_len, &value);
			TVB_SET_ADDRESS(&pinfo->net_src, AT_IPv6, tvb, offset, 6);
			COPY_ADDRESS_SHALLOW(&pinfo->src, &pinfo->net_src);
		}
	}

	else if (key1 == 4)

	{
		proto_tree_add_item(ppcap_tree1, hf_ppcap_source_nodeid, tvb, offset, msg_len, ENC_ASCII|ENC_NA);
		TVB_SET_ADDRESS(&pinfo->net_src, AT_STRINGZ, tvb, offset, msg_len);
		COPY_ADDRESS_SHALLOW(&pinfo->src, &pinfo->net_src);
	}
	if (msg_len%4)
		msg_len = msg_len + (4 - (msg_len%4));
	offset += msg_len;
	return offset;
}

static int
dissect_ppcap_destination_address(tvbuff_t *tvb, packet_info * pinfo, proto_tree * ppcap_tree1, int offset)
{
	int key2;
	guint16 msg_len;
	msg_len = tvb_get_ntohs(tvb, offset);
	proto_tree_add_item( ppcap_tree1, hf_ppcap_length, tvb, offset, 2, ENC_BIG_ENDIAN);
	offset  = offset + 2;
	proto_tree_add_item(ppcap_tree1, hf_ppcap_destreserved, tvb, offset, 2, ENC_BIG_ENDIAN);
	offset += 2;

	key2 = tvb_get_ntohs(tvb, offset);
	proto_tree_add_item(ppcap_tree1, hf_ppcap_address_type, tvb, offset, 2, ENC_BIG_ENDIAN);
	offset += 2;

	if (key2 == 1)
	{
		ssn = tvb_get_guint8(tvb, offset);
		proto_tree_add_item(ppcap_tree1, hf_ppcap_ssn1, tvb, offset, 1, ENC_BIG_ENDIAN);
		offset += 1;

		proto_tree_add_item(ppcap_tree1, hf_ppcap_spc1, tvb, offset, 3, ENC_BIG_ENDIAN);

		/*dst_addr1 = (guint32 )tvb_get_ntoh24(tvb, offset);*/
		mtp3_addr_dpc = wmem_new0(wmem_packet_scope(), mtp3_addr_pc_t);
		mtp3_addr_dpc->pc = (guint32)tvb_get_ntoh24(tvb, offset);
		mtp3_addr_dpc->type = ITU_STANDARD;
		mtp3_addr_dpc->ni = 0;
		SET_ADDRESS(&pinfo->dst, AT_SS7PC, sizeof(mtp3_addr_pc_t), (guint8 *) mtp3_addr_dpc);

		if (msg_len%4)
			msg_len = msg_len + (4 - (msg_len%4));

		offset += msg_len-1;
		return offset;

	}
	else if (key2 == 2)
	{
		proto_tree_add_item(ppcap_tree1, hf_ppcap_dpc, tvb, offset, 4, ENC_BIG_ENDIAN);

		/*dst_addr1 = (guint32 )tvb_get_ntoh24(tvb, offset);*/
		mtp3_addr_dpc = wmem_new0(wmem_packet_scope(), mtp3_addr_pc_t);
		mtp3_addr_dpc->pc = tvb_get_ntohl(tvb, offset);
		mtp3_addr_dpc->type = ITU_STANDARD;
		mtp3_addr_dpc->ni = 0;
		SET_ADDRESS(&pinfo->dst, AT_SS7PC, sizeof(mtp3_addr_pc_t), (guint8 *) mtp3_addr_dpc);
	}
	else if (key2 == 3)
	{
		if (msg_len%16 != 0)
		{
			proto_tree_add_ipv4(ppcap_tree1, hf_ppcap_destination_ip_address1, tvb, offset, msg_len, tvb_get_ipv4(tvb, offset));
			TVB_SET_ADDRESS(&pinfo->net_dst, AT_IPv4, tvb, offset, 4);
			COPY_ADDRESS_SHALLOW(&pinfo->dst, &pinfo->net_dst);
		}
		else
		{
			struct e_in6_addr value;

			tvb_get_ipv6(tvb, offset,&value);
			proto_tree_add_ipv6(ppcap_tree1, hf_ppcap_destination_ip_address2, tvb, offset, msg_len, &value);
			TVB_SET_ADDRESS(&pinfo->net_dst, AT_IPv6, tvb, offset, 6);
			COPY_ADDRESS_SHALLOW(&pinfo->dst, &pinfo->net_dst);
		}
	}

	else if (key2 == 4)
	{
		char *string;
		string = tvb_get_string_enc(wmem_packet_scope(), tvb, offset, msg_len, ENC_UTF_8|ENC_NA);
		proto_tree_add_string(ppcap_tree1, hf_ppcap_destination_nodeid, tvb, offset, msg_len, string);
		TVB_SET_ADDRESS(&pinfo->net_dst, AT_STRINGZ, tvb, offset, msg_len);
		COPY_ADDRESS_SHALLOW(&pinfo->dst, &pinfo->net_dst);
	}

	if (msg_len%4)
		msg_len = msg_len+(4-(msg_len%4));

	offset += msg_len;

	return offset;
}