static void dissect_user(tvbuff_t* tvb, packet_info* pinfo, proto_tree* tree) {
user_encap_t* encap = NULL;
tvbuff_t* payload_tvb;
proto_item* item;
gint len, reported_len;
guint i;
for (i = 0; i < num_encaps; i++) {
if (encaps[i].encap == pinfo->match_uint) {
encap = &(encaps[i]);
break;
}
}
item = proto_tree_add_item(tree,proto_user_encap,tvb,0,-1,ENC_NA);
if (!encap) {
char* msg = ep_strdup_printf("User encapsulation not handled: DLT=%d, "
"check your Preferences->Protocols->DLT_USER",
pinfo->match_uint + 147 - WTAP_ENCAP_USER0);
proto_item_set_text(item,"%s",msg);
expert_add_info_format(pinfo, item, PI_UNDECODED, PI_WARN, "%s", msg);
call_dissector(data_handle, tvb, pinfo, tree);
return;
}
if (encap->payload_proto == NULL) {
char* msg = ep_strdup_printf("User encapsulation's protocol %s not found: "
"DLT=%d, check your Preferences->Protocols->DLT_USER",
encap->payload_proto_name,
pinfo->match_uint + 147 - WTAP_ENCAP_USER0);
proto_item_set_text(item,"%s",msg);
expert_add_info_format(pinfo, item, PI_UNDECODED, PI_WARN, "%s", msg);
call_dissector(data_handle, tvb, pinfo, tree);
return;
}
proto_item_set_text(item,"DLT: %d",pinfo->match_uint + 147 - WTAP_ENCAP_USER0);
if (encap->header_size) {
tvbuff_t* hdr_tvb = tvb_new_subset(tvb, 0, encap->header_size, encap->header_size);
call_dissector(encap->header_proto, hdr_tvb, pinfo, tree);
if (encap->header_proto_name) {
const char *proto_name = dissector_handle_get_long_name(find_dissector(encap->header_proto_name));
if (proto_name) {
proto_item_append_text(item, ", Header: %s (%s)", encap->header_proto_name, proto_name);
}
}
}
len = tvb_length(tvb) - (encap->header_size + encap->trailer_size);
reported_len = tvb_reported_length(tvb) - (encap->header_size + encap->trailer_size);
payload_tvb = tvb_new_subset(tvb, encap->header_size, len, reported_len);
call_dissector(encap->payload_proto, payload_tvb, pinfo, tree);
if (encap->payload_proto_name) {
const char *proto_name = dissector_handle_get_long_name(find_dissector(encap->payload_proto_name));
if (proto_name) {
proto_item_append_text(item, ", Payload: %s (%s)", encap->payload_proto_name, proto_name);
}
}
if (encap->trailer_size) {
tvbuff_t* trailer_tvb = tvb_new_subset(tvb, encap->header_size + len, encap->trailer_size, encap->trailer_size);
call_dissector(encap->trailer_proto, trailer_tvb, pinfo, tree);
if (encap->trailer_proto_name) {
const char *proto_name = dissector_handle_get_long_name(find_dissector(encap->trailer_proto_name));
if (proto_name) {
proto_item_append_text(item, ", Trailer: %s (%s)", encap->trailer_proto_name, proto_name);
}
}
}
}
static void dissect_user(tvbuff_t* tvb, packet_info* pinfo, proto_tree* tree) {
user_encap_t* encap = NULL;
tvbuff_t* payload_tvb;
proto_item* item;
gint len, reported_len;
guint i;
for (i = 0; i < num_encaps; i++) {
if (encaps[i].encap == pinfo->match_uint) {
encap = &(encaps[i]);
break;
}
}
item = proto_tree_add_item(tree,proto_user_encap,tvb,0,-1,ENC_NA);
if (!encap && pinfo->match_uint == WTAP_ENCAP_USER2) {
/*
* Special-case DLT_USER2 - Apple hijacked it for use as DLT_PKTAP.
* The user hasn't assigned anything to it, so default it to
* the PKTAP dissector.
*/
encap = &user2_encap;
}
if (!encap) {
char* msg = wmem_strdup_printf(wmem_packet_scope(),
"User encapsulation not handled: DLT=%d, "
"check your Preferences->Protocols->DLT_USER",
pinfo->match_uint + 147 - WTAP_ENCAP_USER0);
proto_item_set_text(item,"%s",msg);
expert_add_info_format(pinfo, item, &ei_user_encap_not_handled, "%s", msg);
call_dissector(data_handle, tvb, pinfo, tree);
return;
}
if (encap->payload_proto == NULL) {
char* msg = wmem_strdup_printf(wmem_packet_scope(),
"User encapsulation's protocol %s not found: "
"DLT=%d, check your Preferences->Protocols->DLT_USER",
encap->payload_proto_name,
pinfo->match_uint + 147 - WTAP_ENCAP_USER0);
proto_item_set_text(item,"%s",msg);
expert_add_info_format(pinfo, item, &ei_user_encap_not_handled, "%s", msg);
call_dissector(data_handle, tvb, pinfo, tree);
return;
}
proto_item_set_text(item,"DLT: %d",pinfo->match_uint + 147 - WTAP_ENCAP_USER0);
if (encap->header_size) {
tvbuff_t* hdr_tvb = tvb_new_subset_length(tvb, 0, encap->header_size);
call_dissector(encap->header_proto, hdr_tvb, pinfo, tree);
if (encap->header_proto_name) {
const char *proto_name = dissector_handle_get_long_name(find_dissector(encap->header_proto_name));
if (proto_name) {
proto_item_append_text(item, ", Header: %s (%s)", encap->header_proto_name, proto_name);
}
}
}
len = tvb_captured_length(tvb) - (encap->header_size + encap->trailer_size);
reported_len = tvb_reported_length(tvb) - (encap->header_size + encap->trailer_size);
payload_tvb = tvb_new_subset(tvb, encap->header_size, len, reported_len);
call_dissector(encap->payload_proto, payload_tvb, pinfo, tree);
if (encap->payload_proto_name) {
const char *proto_name = dissector_handle_get_long_name(find_dissector(encap->payload_proto_name));
if (proto_name) {
proto_item_append_text(item, ", Payload: %s (%s)", encap->payload_proto_name, proto_name);
}
}
if (encap->trailer_size) {
tvbuff_t* trailer_tvb = tvb_new_subset_length(tvb, encap->header_size + len, encap->trailer_size);
call_dissector(encap->trailer_proto, trailer_tvb, pinfo, tree);
if (encap->trailer_proto_name) {
const char *proto_name = dissector_handle_get_long_name(find_dissector(encap->trailer_proto_name));
if (proto_name) {
proto_item_append_text(item, ", Trailer: %s (%s)", encap->trailer_proto_name, proto_name);
}
}
}
}
