/* Common function for dissecting 3-byte (ANSI or China) PCs. */
void
dissect_mtp3_3byte_pc(tvbuff_t *tvb, guint offset, proto_tree *tree, gint ett_pc, int hf_pc_string, int hf_pc_network,
int hf_pc_cluster, int hf_pc_member, int hf_dpc, int hf_pc)
{
guint32 pc;
proto_item *pc_item, *hidden_item;
proto_tree *pc_tree;
char pc_string[MAX_STRUCTURED_PC_LENGTH];
pc = tvb_get_letoh24(tvb, offset);
mtp3_pc_to_str_buf(pc, pc_string, sizeof(pc_string));
pc_item = proto_tree_add_string(tree, hf_pc_string, tvb, offset, ANSI_PC_LENGTH, pc_string);
/* Add alternate formats of the PC
* NOTE: each of these formats is shown to the user,
* so I think that using hidden fields in this case is OK.
*/
g_snprintf(pc_string, sizeof(pc_string), "%u", pc);
proto_item_append_text(pc_item, " (%s)", pc_string);
hidden_item = proto_tree_add_string(tree, hf_pc_string, tvb, offset, ANSI_PC_LENGTH, pc_string);
PROTO_ITEM_SET_HIDDEN(hidden_item);
g_snprintf(pc_string, sizeof(pc_string), "0x%x", pc);
proto_item_append_text(pc_item, " (%s)", pc_string);
hidden_item = proto_tree_add_string(tree, hf_pc_string, tvb, offset, ANSI_PC_LENGTH, pc_string);
PROTO_ITEM_SET_HIDDEN(hidden_item);
pc_tree = proto_item_add_subtree(pc_item, ett_pc);
proto_tree_add_uint(pc_tree, hf_pc_network, tvb, offset + ANSI_NETWORK_OFFSET, ANSI_NCM_LENGTH, pc);
proto_tree_add_uint(pc_tree, hf_pc_cluster, tvb, offset + ANSI_CLUSTER_OFFSET, ANSI_NCM_LENGTH, pc);
proto_tree_add_uint(pc_tree, hf_pc_member, tvb, offset + ANSI_MEMBER_OFFSET, ANSI_NCM_LENGTH, pc);
/* add full integer values of DPC as hidden for filtering purposes */
if (hf_dpc) {
hidden_item = proto_tree_add_uint(pc_tree, hf_dpc, tvb, offset, ANSI_PC_LENGTH, pc);
PROTO_ITEM_SET_HIDDEN(hidden_item);
}
if (hf_pc) {
hidden_item = proto_tree_add_uint(pc_tree, hf_pc, tvb, offset, ANSI_PC_LENGTH, pc);
PROTO_ITEM_SET_HIDDEN(hidden_item);
}
}
static void
mtp3_addr_to_str_buf(const mtp3_addr_pc_t *addr_pc_p,
gchar *buf, int buf_len)
{
switch (mtp3_addr_fmt)
{
case MTP3_ADDR_FMT_DEC:
switch (addr_pc_p->type)
{
case ITU_STANDARD:
g_snprintf(buf, buf_len, "%u", addr_pc_p->pc & ITU_PC_MASK);
break;
case JAPAN_STANDARD:
g_snprintf(buf, buf_len, "%u", addr_pc_p->pc & JAPAN_PC_MASK);
break;
default:
/* assuming 24-bit */
g_snprintf(buf, buf_len, "%u", addr_pc_p->pc & ANSI_PC_MASK);
break;
}
break;
case MTP3_ADDR_FMT_HEX:
switch (addr_pc_p->type)
{
case ITU_STANDARD:
g_snprintf(buf, buf_len, "%x", addr_pc_p->pc & ITU_PC_MASK);
break;
case JAPAN_STANDARD:
g_snprintf(buf, buf_len, "%x", addr_pc_p->pc & JAPAN_PC_MASK);
break;
default:
/* assuming 24-bit */
g_snprintf(buf, buf_len, "%x", addr_pc_p->pc & ANSI_PC_MASK);
break;
}
break;
case MTP3_ADDR_FMT_NI_DEC:
switch (addr_pc_p->type)
{
case ITU_STANDARD:
g_snprintf(buf, buf_len, "%u:%u", addr_pc_p->ni, addr_pc_p->pc & ITU_PC_MASK);
break;
case JAPAN_STANDARD:
g_snprintf(buf, buf_len, "%u:%u", addr_pc_p->ni, addr_pc_p->pc & JAPAN_PC_MASK);
break;
default:
/* assuming 24-bit */
g_snprintf(buf, buf_len, "%u:%u", addr_pc_p->ni, addr_pc_p->pc & ANSI_PC_MASK);
break;
}
break;
case MTP3_ADDR_FMT_NI_HEX:
switch (addr_pc_p->type)
{
case ITU_STANDARD:
g_snprintf(buf, buf_len, "%u:%x", addr_pc_p->ni, addr_pc_p->pc & ITU_PC_MASK);
break;
case JAPAN_STANDARD:
g_snprintf(buf, buf_len, "%u:%x", addr_pc_p->ni, addr_pc_p->pc & JAPAN_PC_MASK);
break;
default:
/* assuming 24-bit */
g_snprintf(buf, buf_len, "%u:%x", addr_pc_p->ni, addr_pc_p->pc & ANSI_PC_MASK);
break;
}
break;
default:
/* FALLTHRU */
case MTP3_ADDR_FMT_DASHED:
mtp3_pc_to_str_buf(addr_pc_p->pc, buf, buf_len);
break;
}
}