94 lines
2.8 KiB
Python
Executable File
94 lines
2.8 KiB
Python
Executable File
#!/usr/bin/python
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# Copyright 2013-present Barefoot Networks, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from scapy.all import Ether, IP, sendp, get_if_hwaddr, get_if_list, TCP, Raw
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import sys
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import random, string
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def randomword(max_length):
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length = random.randint(1, max_length)
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return ''.join(random.choice(string.lowercase) for i in range(length))
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def read_topo():
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nb_hosts = 0
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nb_switches = 0
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links = []
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with open("topo.txt", "r") as f:
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line = f.readline()[:-1]
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w, nb_switches = line.split()
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assert(w == "switches")
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line = f.readline()[:-1]
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w, nb_hosts = line.split()
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assert(w == "hosts")
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for line in f:
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if not f: break
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a, b = line.split()
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links.append( (a, b) )
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return int(nb_hosts), int(nb_switches), links
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def send_random_traffic(dst):
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dst_mac = None
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dst_ip = None
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src_mac = [get_if_hwaddr(i) for i in get_if_list() if i == 'eth0']
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if len(src_mac) < 1:
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print ("No interface for output")
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sys.exit(1)
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src_mac = src_mac[0]
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src_ip = None
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if src_mac =="00:00:00:00:00:01":
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src_ip = "10.0.0.1"
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elif src_mac =="00:00:00:00:00:02":
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src_ip = "10.0.0.2"
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elif src_mac =="00:00:00:00:00:03":
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src_ip = "10.0.0.3"
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else:
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print ("Invalid source host")
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sys.exit(1)
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if dst == 'h1':
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dst_mac = "00:00:00:00:00:01"
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dst_ip = "10.0.0.1"
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elif dst == 'h2':
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dst_mac = "00:00:00:00:00:02"
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dst_ip = "10.0.0.2"
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elif dst == 'h3':
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dst_mac = "00:00:00:00:00:03"
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dst_ip = "10.0.0.3"
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else:
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print ("Invalid host to send to")
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sys.exit(1)
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total_pkts = 0
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random_ports = random.sample(xrange(1024, 65535), 10)
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for port in random_ports:
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num_packets = random.randint(50, 250)
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for i in range(num_packets):
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data = randomword(100)
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p = Ether(dst=dst_mac,src=src_mac)/IP(dst=dst_ip,src=src_ip)
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p = p/TCP(dport=port)/Raw(load=data)
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print p.show()
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sendp(p, iface = "eth0")
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total_pkts += 1
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print "Sent %s packets in total" % total_pkts
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if __name__ == '__main__':
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if len(sys.argv) < 2:
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print("Usage: python send.py dst_host_name")
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sys.exit(1)
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else:
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dst_name = sys.argv[1]
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send_random_traffic(dst_name)
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