bluetooth: Add EIR public target address (#4603)

Author: antoniovazquezblanco

scapy/layers/bluetooth.py

@@ -1232,6 +1232,13 @@ def extract_padding(self, s):
         return s[:plen], s[plen:]
 
 
+class EIR_PublicTargetAddress(EIR_Element):
+    name = "Public Target Address"
+    fields_desc = [
+        LEMACField('bd_addr', None)
+    ]
+
+
 class EIR_ServiceData32BitUUID(EIR_Element):
     name = 'EIR Service Data - 32-bit UUID'
     fields_desc = [
@@ -2342,6 +2349,7 @@ class HCI_LE_Meta_Long_Term_Key_Request(Packet):
 bind_layers(EIR_Hdr, EIR_SecurityManagerOOBFlags, type=0x11)
 bind_layers(EIR_Hdr, EIR_PeripheralConnectionIntervalRange, type=0x12)
 bind_layers(EIR_Hdr, EIR_ServiceData16BitUUID, type=0x16)
+bind_layers(EIR_Hdr, EIR_PublicTargetAddress, type=0x17)
 bind_layers(EIR_Hdr, EIR_ServiceData32BitUUID, type=0x20)
 bind_layers(EIR_Hdr, EIR_ServiceData128BitUUID, type=0x21)
 bind_layers(EIR_Hdr, EIR_Manufacturer_Specific_Data, type=0xff)

test/scapy/layers/bluetooth.uts

@@ -471,6 +471,11 @@ assert p[EIR_ClassOfDevice].major_service_classes == 0
 assert p[EIR_ClassOfDevice].major_device_class == 5
 assert p[EIR_ClassOfDevice].minor_device_class == 1
 
+= Parse EIR_PublicTargetAddress
+p = HCI_Hdr(hex_bytes('043e1402010001554433221100080717ffeeddccbbaaaa'))
+assert EIR_PublicTargetAddress in p
+assert p[EIR_PublicTargetAddress].bd_addr == 'aa:bb:cc:dd:ee:ff'
+
 = Parse EIR_ServiceData32BitUUID
 
 p = HCI_Hdr(hex_bytes('042fff01c47c80894df801000c0128a269a30c4a125d13f30196894df80c012820f61a1a0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000'))