Add COUNTER64 support to asn1 (for snmp v2).

scapy/asn1/asn1.py

@@ -170,6 +170,7 @@ class ASN1_Class_UNIVERSAL(ASN1_Class):
     COUNTER32 = 0x41
     GAUGE32 = 0x42
     TIME_TICKS = 0x43
+    COUNTER64 = 0x46
     SEP = 0x80
 
 class ASN1_Object_metaclass(type):
@@ -279,6 +280,9 @@ class ASN1_GAUGE32(ASN1_INTEGER):
 class ASN1_COUNTER32(ASN1_INTEGER):
     tag = ASN1_Class_UNIVERSAL.COUNTER32
     
+class ASN1_COUNTER64(ASN1_INTEGER):
+    tag = ASN1_Class_UNIVERSAL.COUNTER64
+    
 class ASN1_SEQUENCE(ASN1_Object):
     tag = ASN1_Class_UNIVERSAL.SEQUENCE
     def strshow(self, lvl=0):

scapy/asn1/ber.py

@@ -305,6 +305,9 @@ class BERcodec_GAUGE32(BERcodec_INTEGER):
 class BERcodec_COUNTER32(BERcodec_INTEGER):
     tag = ASN1_Class_UNIVERSAL.COUNTER32
 
+class BERcodec_COUNTER64(BERcodec_INTEGER):
+    tag = ASN1_Class_UNIVERSAL.COUNTER64
+
 class BERcodec_SEQUENCE(BERcodec_Object):
     tag = ASN1_Class_UNIVERSAL.SEQUENCE
     @classmethod