/* dissect the "DHCP" suboption */
static int
dissect_PNDCP_Suboption_DHCP(tvbuff_t *tvb, int offset, packet_info *pinfo,
proto_tree *tree, proto_item *block_item, proto_item *dcp_item,
guint8 service_id _U_, gboolean is_response _U_)
{
guint8 suboption;
guint16 block_length;
guint16 block_info;
guint16 block_qualifier;
gboolean have_block_info = FALSE;
gboolean have_block_qualifier = FALSE;
offset = dissect_pn_uint8(tvb, offset, pinfo, tree, hf_pn_dcp_suboption_dhcp, &suboption);
offset = dissect_pn_uint16(tvb, offset, pinfo, tree, hf_pn_dcp_block_length, &block_length);
/* BlockInfo? */
if ( ((service_id == PNDCP_SERVICE_ID_IDENTIFY) && is_response) ||
((service_id == PNDCP_SERVICE_ID_HELLO) && !is_response) ||
((service_id == PNDCP_SERVICE_ID_GET) && is_response)) {
offset = dissect_pn_uint16(tvb, offset, pinfo, tree, hf_pn_dcp_block_info, &block_info);
have_block_info=TRUE;
block_length -= 2;
}
/* BlockQualifier? */
if ( (service_id == PNDCP_SERVICE_ID_SET) && !is_response) {
offset = dissect_pn_uint16(tvb, offset, pinfo, tree, hf_pn_dcp_block_qualifier, &block_qualifier);
have_block_qualifier=TRUE;
block_length -= 2;
}
switch (suboption) {
case PNDCP_SUBOPTION_DHCP_CLIENT_ID:
pn_append_info(pinfo, dcp_item, ", DHCP client identifier");
proto_item_append_text(block_item, "DHCP/Client-ID");
if (have_block_qualifier) {
proto_item_append_text(block_item, ", BlockQualifier: %s",
val_to_str(block_qualifier, pn_dcp_block_qualifier, "Unknown"));
}
if (have_block_info) {
proto_item_append_text(block_item, ", BlockInfo: %s",
val_to_str(block_info, pn_dcp_block_info, "Unknown"));
}
proto_tree_add_item(tree, hf_pn_dcp_suboption_dhcp_device_id, tvb, offset, block_length, ENC_NA);
offset += block_length;
break;
default:
offset = dissect_pn_undecoded(tvb, offset, pinfo, tree, block_length);
}
return offset;
}
static int
dissect_PNMRRT_PDU(tvbuff_t *tvb, int offset,
packet_info *pinfo, proto_tree *tree, proto_item *item)
{
guint16 version;
guint8 type;
guint8 length;
gint i = 0;
/* MRRT_Version */
offset = dissect_pn_uint16(tvb, offset, pinfo, tree, hf_pn_mrrt_version, &version);
while (tvb_reported_length_remaining(tvb, offset) > 0) {
/* MRRT_TLVHeader.Type */
offset = dissect_pn_uint8(tvb, offset, pinfo, tree, hf_pn_mrrt_type, &type);
/* MRRT_TLVHeader.Length */
offset = dissect_pn_uint8(tvb, offset, pinfo, tree, hf_pn_mrrt_length, &length);
if (i != 0) {
col_append_str(pinfo->cinfo, COL_INFO, ", ");
proto_item_append_text(item, ", ");
}
i++;
switch(type) {
case 0x00:
/* no content */
col_append_str(pinfo->cinfo, COL_INFO, "End");
proto_item_append_text(item, "End");
return offset;
break;
case 0x01:
offset = dissect_PNMRRT_Common(tvb, offset, pinfo, tree, item, length);
break;
case 0x02:
offset = dissect_PNMRRT_Test(tvb, offset, pinfo, tree, item, length);
break;
default:
offset = dissect_pn_undecoded(tvb, offset, pinfo, tree, length);
col_append_fstr(pinfo->cinfo, COL_INFO, "Unknown TLVType 0x%x", type);
proto_item_append_text(item, "Unknown TLVType 0x%x", type);
break;
}
}
return offset;
}
static int
dissect_PNMRP_Option(tvbuff_t *tvb, int offset,
packet_info *pinfo, proto_tree *tree, proto_item *item, guint8 length)
{
guint32 oui;
/* OUI (organizational unique id) */
offset = dissect_pn_oid(tvb, offset, pinfo,tree, hf_pn_mrp_oui, &oui);
length -= 3;
switch (oui)
{
case OUI_SIEMENS:
proto_item_append_text(item, "Option(SIEMENS)");
/* Padding */
if (offset % 4) {
length -= 4 - (offset % 4);
offset = dissect_pn_align4(tvb, offset, pinfo, tree);
}
if(length != 0) {
offset = dissect_pn_undecoded(tvb, offset, pinfo, tree, length);
}
col_append_str(pinfo->cinfo, COL_INFO, "Option(Siemens)");
break;
default:
proto_item_append_text(item, "Option(Unknown-OUI)");
offset = dissect_pn_undecoded(tvb, offset, pinfo, tree, length);
col_append_str(pinfo->cinfo, COL_INFO, "Option");
}
offset += length;
/* Padding */
offset = dissect_pn_align4(tvb, offset, pinfo, tree);
return offset;
}
/* possibly dissect a FRAG_PDU related PN-RT packet */
static gboolean
dissect_FRAG_PDU_heur(tvbuff_t *tvb,
packet_info *pinfo, proto_tree *tree)
{
guint16 u16FrameID;
int offset = 0;
proto_item *sub_item;
proto_tree *sub_tree;
guint8 u8FragDataLength;
proto_item *status_item;
proto_tree *status_tree;
guint8 u8FragStatus;
/* the sub tvb will NOT contain the frame_id here! */
u16FrameID = GPOINTER_TO_UINT(pinfo->private_data);
/* possible FrameID ranges for FRAG_PDU */
if (u16FrameID >= 0xFF80 && u16FrameID < 0xFF8F) {
sub_item = proto_tree_add_item(tree, hf_pn_rt_frag, tvb, offset, 0, FALSE);
sub_tree = proto_item_add_subtree(sub_item, ett_pn_rt_frag);
u8FragDataLength = tvb_get_guint8(tvb, offset);
proto_tree_add_uint(sub_tree, hf_pn_rt_frag_data_length, tvb, offset, 1, u8FragDataLength);
offset += 1;
status_item = proto_tree_add_item(sub_tree, hf_pn_rt_frag_status, tvb, offset, 1, FALSE);
status_tree = proto_item_add_subtree(status_item, ett_pn_rt_frag_status);
u8FragStatus = tvb_get_guint8(tvb, offset);
proto_tree_add_uint(status_tree, hf_pn_rt_frag_status_more_follows, tvb, offset, 1, u8FragStatus);
proto_tree_add_uint(status_tree, hf_pn_rt_frag_status_error, tvb, offset, 1, u8FragStatus);
proto_tree_add_uint(status_tree, hf_pn_rt_frag_status_fragment_number, tvb, offset, 1, u8FragStatus);
offset += 1;
proto_item_append_text(status_item, ": Number: %u, %s, %s",
u8FragStatus & 0x3F,
val_to_str( (u8FragStatus & 0x80) >> 7, pn_rt_frag_status_more_follows, "Unknown"),
val_to_str( (u8FragStatus & 0x40) >> 6, pn_rt_frag_status_error, "Unknown"));
proto_tree_add_string_format(sub_tree, hf_pn_rt_frag_data, tvb, offset, tvb_length(tvb) - offset, "data",
"FragData: %d bytes", tvb_length(tvb) - offset);
/* note: the actual defragmentation implementation is still missing here */
dissect_pn_undecoded(tvb, offset, pinfo, sub_tree, tvb_length(tvb) - offset);
return TRUE;
}
/* dissect the "manufacturer" suboption */
static int
dissect_PNDCP_Suboption_Manuf(tvbuff_t *tvb, int offset, packet_info *pinfo,
proto_tree *tree, proto_item *block_item, proto_item *dcp_item,
guint8 service_id _U_, gboolean is_response _U_)
{
guint8 suboption;
guint16 block_length;
offset = dissect_pn_uint8( tvb, offset, pinfo, tree, hf_pn_dcp_suboption_manuf, &suboption);
offset = dissect_pn_uint16(tvb, offset, pinfo, tree, hf_pn_dcp_block_length, &block_length);
switch (suboption) {
default:
pn_append_info(pinfo, dcp_item, ", Manufacturer Specific");
proto_item_append_text(block_item, "Manufacturer Specific");
offset = dissect_pn_undecoded(tvb, offset, pinfo, tree, block_length);
}
return offset;
}
/* dissect the "all" suboption */
static int
dissect_PNDCP_Suboption_All(tvbuff_t *tvb, int offset, packet_info *pinfo,
proto_tree *tree, proto_item *block_item, proto_item *dcp_item,
guint8 service_id _U_, gboolean is_response _U_)
{
guint8 suboption;
guint16 block_length;
offset = dissect_pn_uint8(tvb, offset, pinfo, tree, hf_pn_dcp_suboption_all, &suboption);
offset = dissect_pn_uint16(tvb, offset, pinfo, tree, hf_pn_dcp_block_length, &block_length);
switch (suboption) {
case 255: /* All */
pn_append_info(pinfo, dcp_item, ", All");
proto_item_append_text(block_item, "All/All");
break;
default:
offset = dissect_pn_undecoded(tvb, offset, pinfo, tree, block_length);
}
return offset;
}
static int
dissect_PNMRP_PDU(tvbuff_t *tvb, int offset,
packet_info *pinfo, proto_tree *tree, proto_item *item)
{
guint16 version;
guint8 type;
guint8 length;
gint i;
tvbuff_t *new_tvb;
/* MRP_Version */
offset = dissect_pn_uint16(tvb, offset, pinfo, tree, hf_pn_mrp_version, &version);
/* the rest of the packet has 4byte alignment regarding to the beginning of the next TLV block! */
/* XXX - do we have to free this new tvb below? */
new_tvb = tvb_new_subset_remaining(tvb, offset);
offset = 0;
for(i=0; tvb_length_remaining(tvb, offset) > 0; i++) {
/* MRP_TLVHeader.Type */
offset = dissect_pn_uint8(new_tvb, offset, pinfo, tree, hf_pn_mrp_type, &type);
/* MRP_TLVHeader.Length */
offset = dissect_pn_uint8(new_tvb, offset, pinfo, tree, hf_pn_mrp_length, &length);
if(i != 0) {
col_append_str(pinfo->cinfo, COL_INFO, ", ");
proto_item_append_text(item, ", ");
}
switch(type) {
case(0x00):
/* no content */
col_append_str(pinfo->cinfo, COL_INFO, "End");
proto_item_append_text(item, "End");
return offset;
break;
case(0x01):
offset = dissect_PNMRP_Common(new_tvb, offset, pinfo, tree, item);
break;
case(0x02):
offset = dissect_PNMRP_Test(new_tvb, offset, pinfo, tree, item);
break;
case(0x03):
offset = dissect_PNMRP_TopologyChange(new_tvb, offset, pinfo, tree, item);
break;
case(0x04):
offset = dissect_PNMRP_LinkDown(new_tvb, offset, pinfo, tree, item);
break;
case(0x05):
offset = dissect_PNMRP_LinkUp(new_tvb, offset, pinfo, tree, item);
break;
case(0x7f):
offset = dissect_PNMRP_Option(new_tvb, offset, pinfo, tree, item, length);
break;
default:
offset = dissect_pn_undecoded(tvb, offset, pinfo, tree, length);
col_append_fstr(pinfo->cinfo, COL_INFO, "Unknown TLVType 0x%x", type);
proto_item_append_text(item, "Unknown TLVType 0x%x", type);
}
}
return offset;
}
/* dissect a whole DCP PDU */
static void
dissect_PNDCP_PDU(tvbuff_t *tvb,
packet_info *pinfo, proto_tree *tree, proto_item *dcp_item)
{
guint8 service_id;
guint8 service_type;
guint32 xid;
guint16 response_delay;
guint16 data_length;
int offset = 0;
gchar *xid_str;
gboolean is_response = FALSE;
offset = dissect_pn_uint8 (tvb, offset, pinfo, tree, hf_pn_dcp_service_id, &service_id);
offset = dissect_pn_uint8 (tvb, offset, pinfo, tree, hf_pn_dcp_service_type, &service_type);
offset = dissect_pn_uint32(tvb, offset, pinfo, tree, hf_pn_dcp_xid, &xid);
if (service_id == PNDCP_SERVICE_ID_IDENTIFY && service_type == PNDCP_SERVICE_TYPE_REQUEST) {
/* multicast header */
offset = dissect_pn_uint16(tvb, offset, pinfo, tree, hf_pn_dcp_response_delay, &response_delay);
} else {
/* unicast header */
offset = dissect_pn_uint16(tvb, offset, pinfo, tree, hf_pn_dcp_reserved16, NULL);
}
offset = dissect_pn_uint16(tvb, offset, pinfo, tree, hf_pn_dcp_data_length, &data_length);
switch (service_id) {
case PNDCP_SERVICE_ID_GET:
pn_append_info(pinfo, dcp_item, "Get");
break;
case PNDCP_SERVICE_ID_SET:
pn_append_info(pinfo, dcp_item, "Set");
break;
case PNDCP_SERVICE_ID_IDENTIFY:
pn_append_info(pinfo, dcp_item, "Ident");
break;
case PNDCP_SERVICE_ID_HELLO:
pn_append_info(pinfo, dcp_item, "Hello");
break;
default:
dissect_pn_undecoded(tvb, offset, pinfo, tree, tvb_length_remaining(tvb, offset));
return;
}
switch (service_type) {
case PNDCP_SERVICE_TYPE_REQUEST:
pn_append_info(pinfo, dcp_item, " Req");
break;
case PNDCP_SERVICE_TYPE_RESPONSE_SUCCESS:
pn_append_info(pinfo, dcp_item, " Ok ");
is_response = TRUE;
break;
case PNDCP_SERVICE_TYPE_RESPONSE_UNSUPPORTED:
pn_append_info(pinfo, dcp_item, " unsupported");
is_response = TRUE;
break;
default:
dissect_pn_undecoded(tvb, offset, pinfo, tree, tvb_length_remaining(tvb, offset));
return;
}
xid_str = wmem_strdup_printf(wmem_packet_scope(), ", Xid:0x%x", xid);
pn_append_info(pinfo, dcp_item, xid_str);
/* dissect a number of blocks (depending on the remaining length) */
while(data_length) {
int ori_offset = offset;
if (service_id == PNDCP_SERVICE_ID_GET && service_type == PNDCP_SERVICE_TYPE_REQUEST) {
/* Selectors */
offset = dissect_PNDCP_Option(tvb, offset, pinfo,
tree, dcp_item, hf_pn_dcp_option, TRUE /* append_col */);
} else {
offset = dissect_PNDCP_Block(tvb, offset, pinfo, tree, dcp_item, service_id, is_response);
}
/* prevent an infinite loop */
if (offset <= ori_offset || data_length < (offset - ori_offset)) {
THROW(ReportedBoundsError);
}
data_length -= (offset - ori_offset);
}
}
/* dissect the "control" suboption */
static int
dissect_PNDCP_Suboption_Control(tvbuff_t *tvb, int offset, packet_info *pinfo,
proto_tree *tree, proto_item *block_item, proto_item *dcp_item,
guint8 service_id _U_, gboolean is_response _U_)
{
guint8 suboption;
guint16 block_length;
guint16 block_qualifier;
gchar *info_str;
guint8 block_error;
proto_item *item = NULL;
offset = dissect_pn_uint8(tvb, offset, pinfo, tree, hf_pn_dcp_suboption_control, &suboption);
offset = dissect_pn_uint16(tvb, offset, pinfo, tree, hf_pn_dcp_block_length, &block_length);
switch (suboption) {
case PNDCP_SUBOPTION_CONTROL_START_TRANS:
pn_append_info(pinfo, dcp_item, ", Start-Trans");
proto_item_append_text(block_item, "Control/Start-Transaction");
offset = dissect_pn_uint16(tvb, offset, pinfo, tree, hf_pn_dcp_block_qualifier, &block_qualifier);
break;
case PNDCP_SUBOPTION_CONTROL_END_TRANS:
pn_append_info(pinfo, dcp_item, ", End-Trans");
proto_item_append_text(block_item, "Control/End-Transaction");
offset = dissect_pn_uint16(tvb, offset, pinfo, tree, hf_pn_dcp_block_qualifier, &block_qualifier);
break;
case PNDCP_SUBOPTION_CONTROL_SIGNAL:
pn_append_info(pinfo, dcp_item, ", Signal");
proto_item_append_text(block_item, "Control/Signal");
offset = dissect_pn_uint16(tvb, offset, pinfo, tree, hf_pn_dcp_block_qualifier, &block_qualifier);
block_length -= 2;
offset = dissect_pn_undecoded(tvb, offset, pinfo, tree, block_length);
break;
case PNDCP_SUBOPTION_CONTROL_RESPONSE:
proto_item_append_text(block_item, "Control/Response");
offset = dissect_PNDCP_Option(tvb, offset, pinfo, tree, block_item, hf_pn_dcp_suboption_control_response,
FALSE /* append_col */);
block_error = tvb_get_guint8 (tvb, offset);
if (tree) {
item = proto_tree_add_uint(tree, hf_pn_dcp_block_error, tvb, offset, 1, block_error);
}
offset += 1;
if (block_error != 0) {
expert_add_info_format(pinfo, item, &ei_pn_dcp_block_error_unknown, "%s",
val_to_str(block_error, pn_dcp_block_error, "Unknown"));
}
info_str = wmem_strdup_printf(wmem_packet_scope(), ", Response(%s)",
val_to_str(block_error, pn_dcp_block_error, "Unknown"));
pn_append_info(pinfo, dcp_item, info_str);
proto_item_append_text(block_item, ", BlockError: %s",
val_to_str(block_error, pn_dcp_block_error, "Unknown"));
break;
case PNDCP_SUBOPTION_CONTROL_FACT_RESET:
pn_append_info(pinfo, dcp_item, ", Reset FactorySettings");
proto_item_append_text(block_item, "Control/Reset FactorySettings");
offset += 2;
block_length -= 2;
break;
default:
offset = dissect_pn_undecoded(tvb, offset, pinfo, tree, block_length);
}
return offset;
}
/* dissect the "device" suboption */
static int
dissect_PNDCP_Suboption_Device(tvbuff_t *tvb, int offset, packet_info *pinfo,
proto_tree *tree, proto_item *block_item, proto_item *dcp_item,
guint8 service_id, gboolean is_response)
{
guint8 suboption;
guint16 block_length;
gchar *info_str;
guint8 device_role;
guint16 vendor_id;
guint16 device_id;
char *typeofstation;
char *nameofstation;
char *aliasname;
guint16 block_info;
guint16 block_qualifier;
gboolean have_block_info = FALSE;
gboolean have_block_qualifier = FALSE;
guint8 device_instance_high;
guint8 device_instance_low;
/* SuboptionDevice... */
offset = dissect_pn_uint8(tvb, offset, pinfo, tree, hf_pn_dcp_suboption_device, &suboption);
/* DCPBlockLength */
offset = dissect_pn_uint16(tvb, offset, pinfo, tree, hf_pn_dcp_block_length, &block_length);
/* BlockInfo? */
if ( ((service_id == PNDCP_SERVICE_ID_IDENTIFY) && is_response) ||
((service_id == PNDCP_SERVICE_ID_HELLO) && !is_response) ||
((service_id == PNDCP_SERVICE_ID_GET) && is_response)) {
offset = dissect_pn_uint16(tvb, offset, pinfo, tree, hf_pn_dcp_block_info, &block_info);
have_block_info = TRUE;
block_length -= 2;
}
/* BlockQualifier? */
if ( (service_id == PNDCP_SERVICE_ID_SET) && !is_response) {
offset = dissect_pn_uint16(tvb, offset, pinfo, tree, hf_pn_dcp_block_qualifier, &block_qualifier);
have_block_qualifier = TRUE;
block_length -= 2;
}
switch (suboption) {
case PNDCP_SUBOPTION_DEVICE_MANUF:
typeofstation = (char *)wmem_alloc(wmem_packet_scope(), block_length+1);
tvb_memcpy(tvb, (guint8 *) typeofstation, offset, block_length);
typeofstation[block_length] = '\0';
proto_tree_add_string (tree, hf_pn_dcp_suboption_device_typeofstation, tvb, offset, block_length, typeofstation);
pn_append_info(pinfo, dcp_item, ", DeviceVendorValue");
proto_item_append_text(block_item, "Device/Manufacturer specific");
if (have_block_qualifier) {
proto_item_append_text(block_item, ", BlockQualifier: %s",
val_to_str(block_qualifier, pn_dcp_block_qualifier, "Unknown"));
}
if (have_block_info){
proto_item_append_text(block_item, ", BlockInfo: %s",
val_to_str(block_info, pn_dcp_block_info, "Unknown"));
}
proto_item_append_text(block_item, ", DeviceVendorValue: \"%s\"", typeofstation);
offset += block_length;
break;
case PNDCP_SUBOPTION_DEVICE_NAMEOFSTATION:
nameofstation = (char *)wmem_alloc(wmem_packet_scope(), block_length+1);
tvb_memcpy(tvb, (guint8 *) nameofstation, offset, block_length);
nameofstation[block_length] = '\0';
proto_tree_add_string (tree, hf_pn_dcp_suboption_device_nameofstation, tvb, offset, block_length, nameofstation);
pn_append_info(pinfo, dcp_item, wmem_strdup_printf(wmem_packet_scope(), ", NameOfStation:\"%s\"", nameofstation));
proto_item_append_text(block_item, "Device/NameOfStation");
if (have_block_qualifier) {
proto_item_append_text(block_item, ", BlockQualifier: %s",
val_to_str(block_qualifier, pn_dcp_block_qualifier, "Unknown"));
}
if (have_block_info) {
proto_item_append_text(block_item, ", BlockInfo: %s",
val_to_str(block_info, pn_dcp_block_info, "Unknown"));
}
proto_item_append_text(block_item, ", \"%s\"", nameofstation);
offset += block_length;
break;
case PNDCP_SUBOPTION_DEVICE_DEV_ID:
offset = dissect_pn_uint16(tvb, offset, pinfo, tree, hf_pn_dcp_suboption_vendor_id, &vendor_id);
offset = dissect_pn_uint16(tvb, offset, pinfo, tree, hf_pn_dcp_suboption_device_id, &device_id);
pn_append_info(pinfo, dcp_item, ", Dev-ID");
proto_item_append_text(block_item, "Device/Device ID");
if (have_block_qualifier) {
proto_item_append_text(block_item, ", BlockQualifier: %s",
val_to_str(block_qualifier, pn_dcp_block_qualifier, "Unknown"));
}
if (have_block_info) {
proto_item_append_text(block_item, ", BlockInfo: %s",
val_to_str(block_info, pn_dcp_block_info, "Unknown"));
}
proto_item_append_text(block_item, ", VendorID: 0x%04x / DeviceID: 0x%04x", vendor_id, device_id);
break;
case PNDCP_SUBOPTION_DEVICE_DEV_ROLE:
offset = dissect_pn_uint8(tvb, offset, pinfo, tree, hf_pn_dcp_suboption_device_role, &device_role);
offset = dissect_pn_uint8(tvb, offset, pinfo, tree, hf_pn_dcp_reserved8, NULL);
pn_append_info(pinfo, dcp_item, ", Dev-Role");
proto_item_append_text(block_item, "Device/Device Role");
if (have_block_qualifier) {
proto_item_append_text(block_item, ", BlockQualifier: %s",
val_to_str(block_qualifier, pn_dcp_block_qualifier, "Unknown"));
}
if (have_block_info)
proto_item_append_text(block_item, ", BlockInfo: %s", val_to_str(block_info, pn_dcp_block_info, "Unknown"));
if (device_role & 0x01)
proto_item_append_text(block_item, ", IO-Device");
if (device_role & 0x02)
proto_item_append_text(block_item, ", IO-Controller");
if (device_role & 0x04)
proto_item_append_text(block_item, ", IO-Multidevice");
if (device_role & 0x08)
proto_item_append_text(block_item, ", PN-Supervisor");
break;
case PNDCP_SUBOPTION_DEVICE_DEV_OPTIONS:
info_str = wmem_strdup_printf(wmem_packet_scope(), ", Dev-Options(%u)", block_length/2);
pn_append_info(pinfo, dcp_item, info_str);
proto_item_append_text(block_item, "Device/Device Options");
if (have_block_qualifier) {
proto_item_append_text(block_item, ", BlockQualifier: %s",
val_to_str(block_qualifier, pn_dcp_block_qualifier, "Unknown"));
}
if (have_block_info) {
proto_item_append_text(block_item, ", BlockInfo: %s",
val_to_str(block_info, pn_dcp_block_info, "Unknown"));
}
proto_item_append_text(block_item, ", %u options", block_length/2);
for( ; block_length != 0; block_length -= 2) {
offset = dissect_PNDCP_Option(tvb, offset, pinfo, tree, NULL /*block_item*/, hf_pn_dcp_option,
FALSE /* append_col */);
}
break;
case PNDCP_SUBOPTION_DEVICE_ALIAS_NAME:
aliasname = (char *)wmem_alloc(wmem_packet_scope(), block_length+1);
tvb_memcpy(tvb, (guint8 *) aliasname, offset, block_length);
aliasname[block_length] = '\0';
proto_tree_add_string (tree, hf_pn_dcp_suboption_device_aliasname, tvb, offset, block_length, aliasname);
pn_append_info(pinfo, dcp_item, wmem_strdup_printf(wmem_packet_scope(), ", AliasName:\"%s\"", aliasname));
proto_item_append_text(block_item, "Device/AliasName");
if (have_block_qualifier) {
proto_item_append_text(block_item, ", BlockQualifier: %s",
val_to_str(block_qualifier, pn_dcp_block_qualifier, "Unknown"));
}
if (have_block_info) {
proto_item_append_text(block_item, ", BlockInfo: %s",
val_to_str(block_info, pn_dcp_block_info, "Unknown"));
}
proto_item_append_text(block_item, ", \"%s\"", aliasname);
offset += block_length;
break;
case PNDCP_SUBOPTION_DEVICE_DEV_INSTANCE:
offset = dissect_pn_uint8(tvb, offset, pinfo, tree, hf_pn_dcp_suboption_device_instance_high, &device_instance_high);
offset = dissect_pn_uint8(tvb, offset, pinfo, tree, hf_pn_dcp_suboption_device_instance_low, &device_instance_low);
pn_append_info(pinfo, dcp_item, ", Dev-Instance");
proto_item_append_text(block_item, "Device/Device Instance");
if (have_block_qualifier) {
proto_item_append_text(block_item, ", BlockQualifier: %s",
val_to_str(block_qualifier, pn_dcp_block_qualifier, "Unknown"));
}
if (have_block_info) {
proto_item_append_text(block_item, ", BlockInfo: %s",
val_to_str(block_info, pn_dcp_block_info, "Unknown"));
}
proto_item_append_text(block_item, ", InstanceHigh: %d, Instance Low: %d",
device_instance_high, device_instance_low);
break;
default:
offset = dissect_pn_undecoded(tvb, offset, pinfo, tree, block_length);
}
return offset;
}
/* dissect the "IP" suboption */
static int
dissect_PNDCP_Suboption_IP(tvbuff_t *tvb, int offset, packet_info *pinfo,
proto_tree *tree, proto_item *block_item, proto_item *dcp_item,
guint8 service_id, gboolean is_response)
{
guint8 suboption;
guint16 block_length;
guint16 block_info;
guint16 block_qualifier;
guint32 ip;
proto_item *item = NULL;
/* SuboptionIPParameter */
offset = dissect_pn_uint8 (tvb, offset, pinfo, tree, hf_pn_dcp_suboption_ip, &suboption);
/* DCPBlockLength */
offset = dissect_pn_uint16(tvb, offset, pinfo, tree, hf_pn_dcp_block_length, &block_length);
switch (suboption) {
case PNDCP_SUBOPTION_IP_MAC:
/* MACAddressValue? */
pn_append_info(pinfo, dcp_item, ", MAC");
proto_item_append_text(block_item, "IP/MAC");
offset = dissect_pn_undecoded(tvb, offset, pinfo, tree, block_length);
break;
case PNDCP_SUBOPTION_IP_IP:
pn_append_info(pinfo, dcp_item, ", IP");
proto_item_append_text(block_item, "IP/IP");
/* BlockInfo? */
if ( ((service_id == PNDCP_SERVICE_ID_IDENTIFY) && is_response) ||
((service_id == PNDCP_SERVICE_ID_HELLO) && !is_response) ||
((service_id == PNDCP_SERVICE_ID_GET) && is_response)) {
block_info = tvb_get_ntohs (tvb, offset);
if (tree) {
item = proto_tree_add_uint(tree, hf_pn_dcp_suboption_ip_block_info, tvb, offset, 2, block_info);
}
offset += 2;
proto_item_append_text(block_item, ", BlockInfo: %s",
val_to_str(block_info, pn_dcp_suboption_ip_block_info, "Undecoded"));
block_length -= 2;
if (block_info & 0x80) {
expert_add_info(pinfo, item, &ei_pn_dcp_ip_conflict);
}
}
/* BlockQualifier? */
if ( (service_id == PNDCP_SERVICE_ID_SET) && !is_response) {
offset = dissect_pn_uint16(tvb, offset, pinfo, tree, hf_pn_dcp_block_qualifier, &block_qualifier);
proto_item_append_text(block_item, ", BlockQualifier: %s",
val_to_str(block_qualifier, pn_dcp_block_qualifier, "Unknown"));
block_length -= 2;
}
/* IPParameterValue ... */
/* IPAddress */
offset = dissect_pn_ipv4(tvb, offset, pinfo, tree, hf_pn_dcp_suboption_ip_ip, &ip);
proto_item_append_text(block_item, ", IP: %s", ip_to_str((guint8*)&ip));
/* Subnetmask */
offset = dissect_pn_ipv4(tvb, offset, pinfo, tree, hf_pn_dcp_suboption_ip_subnetmask, &ip);
proto_item_append_text(block_item, ", Subnet: %s", ip_to_str((guint8*)&ip));
/* StandardGateway */
offset = dissect_pn_ipv4(tvb, offset, pinfo, tree, hf_pn_dcp_suboption_ip_standard_gateway, &ip);
proto_item_append_text(block_item, ", Gateway: %s", ip_to_str((guint8*)&ip));
break;
default:
offset = dissect_pn_undecoded(tvb, offset, pinfo, tree, block_length);
}
return offset;
}
