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Adding a malicious node in NS2 in AODV Protocol

Adding a malicious node is ns2 using aodv protocol. The node which is declared as malicious will simply drop the router packet (DROP_RTR_ROUTE_LOOP).

Two files have to be modified.
1. aodv.h
2. aodv.cc

aodv.h file changes
Declare a boolean variable malicious as shown below in the protected scope in the class AODV

bool malicious;

aodv.cc file changes
1. Initialize the malicious varible with a value "false". Declare it inside the constructor as shown below
AODV::AODV(nsaddr_t id):Agent(PT_AODV)...
{
.......
malicious = false;
}

2. Add the following statement to the aodv.cc file in the "if(argc==2)" statment.

if(strcmp(argv[1], "malicious") == 0) {
    malicious = true;
   return TCL_OK;
}

3. Implement the behavior of the malicious node by setting the following code in the rt_resolve(Packet *p) function. The malicious node will simply drop the packet as indicated below.

if(malicious==true)
{
drop(p,DROP_RTR_ROUTE_LOOP);
}

Once done, recompile ns2 as given below
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