Improvement for the repository

networking.py

@@ -0,0 +1,137 @@
+from struct import *
+import socket
+
+class ipv4:
+    def __init__(self, packet):
+        iph = packet[:20]
+        iph = unpack('!BBHHHBBH4s4s' , iph)
+
+        self.version = iph[0] >> 4
+        self.length = (iph[0] & 0xF) * 4
+        self.ttl = iph[5]
+        self.next_header = iph[6]
+        self.src = socket.inet_ntoa(iph[8])
+        self.target = socket.inet_ntoa(iph[9])
+        self.data = packet[20:]
+
+class ipv6:
+    def __init__(self, packet):
+        iph = packet[:40]
+        iph = unpack('!IHBB16H', iph)
+
+        self.version = iph[0] >> 28 
+        self.trafic = (iph[0] >> 20) & 0x00FF
+        self.flow_label = iph[0] & 0xFFFF
+        self.payload = iph[1]
+        self.next_header = iph[2]
+        self.hop_limit = iph[3]
+        self.src = 'Source: ' +  ipv6_to_string(iph, 4, 12)
+        self.target = 'Target: ' +  ipv6_to_string(iph, 12, 20)
+        self.data = packet[40:]
+def ipv6_to_string(iph, start, end):
+    ipv6_string = ''
+    for x in range(start, end):
+        if iph[x] != 0:
+            ipv6_string += str(hex(iph[x]))[2:]
+        if x != end-1:
+            ipv6_string += ':'
+
+    return ipv6_string
+
+class udp:
+    def __init__(self, packet):
+        header = unpack("!4H",packet[:8])
+        self.src_port = header[0]
+        self.dest_port = header[1]
+        self.lenght = header[2]
+        self.check_sum = header[3]
+        self.data = packet[8:]
+
+class tcp:
+    def __init__(self, packet):
+        tcph = packet[:20]
+        tcph = unpack('!2H2I4H', tcph)
+
+        self.src_port = tcph[0]
+        self.dest_port = tcph[1]
+        self.sequence = tcph[2]
+        self.acknowledgment = tcph[3]
+        self.length = tcph[4] >> 12
+        self.reserved = (tcph[4] >> 6) & 0x003F 
+        self.flag_urg = (tcph[4] & 0x0020) >> 5 
+        self.flag_ack = (tcph[4] & 0x0010) >> 4
+        self.flag_psh = (tcph[4] & 0x0008) >> 3
+        self.flag_rst = (tcph[4] & 0x0004) >> 2
+        self.flag_syn = (tcph[4] & 0x0002) >> 1
+        self.flag_fin = (tcph[4] & 0x0001)
+        self.window = packet[5]
+        self.checkSum = packet[6]
+        self.urgPntr = packet[7]
+
+        h_size = self.length * 4
+        data_size = len(packet) - h_size
+        self.data = packet[h_size:]
+
+class routing:
+    def __init__(self, packet):
+        header = unpack("!4B", packet[:4])
+        self.next_header = header[0]
+        self.hdr_ext_len = int(header[1] * 8 + 8)
+        self.routing_type = header[2]
+        self.seg_left = header[3]
+        self.data = packet[self.hdr_ext_len:]
+
+class icmpv6:
+    def __init__(self, packet):
+        header = unpack("!BBH",packet[:4])
+        self.type = header[0]
+        self.code = header[1]
+        self.checksum = header[2]
+        self.data = packet[4:]
+
+class icmp:
+    def __init__(self, packet):
+        header = unpack("!BBH", packet[:4])
+        self.type = header[0]
+        self.code = header[1]
+        self.checksum = header[2]
+        self.data = packet[4:]
+
+class hopbyhop:
+    def __init__(self, packet):
+        header = unpack("!2B", packet[:2])
+        self.next_header = header[0]
+        self.hdr_ext_len = int(header[1] * 8 + 8)
+        self.data = packet[self.hdr_ext_len:]
+
+class fragment:
+    def __init__(self, packet):
+        header = unpack("!2BHI", packet[:8])
+        self.next_header = header[0]
+        self.reserved = header[1]
+        self.frag_offset = packet[2] >> 3
+        self.m_flag = packet[2] & 1
+        self.identification = packet[3]
+        self.data = packet[8:]
+
+class destination:
+    def __init__(self, packet):
+        header = unpack("!2B", packet[:2])
+        self.next_header = header[0]
+        self.hdr_ext_len = int(header[1] * 8 + 8)
+        self.data = packet[self.hdr_ext_len:]
+
+class authentication:
+    def __init__(self, packet):
+        header = unpack("!2BH2I", packet[:12])
+        self.next_header = header[0]
+        self.payload_len = int(header[1] * 4 + 8)
+        self.reserved = header[2]
+        self.spi = header[3]
+        self.sequence = header[4]
+        self.data = packet[self.payload_len:]
+
+
+
+
+