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Code Issues Releases Wiki Activity

Fixed the examples.

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This commit is contained in:
Matias Fontanini
2013-04-24 12:07:52 -03:00
parent cf19c8758d
commit 7f6e4446b4
4 changed files with 46 additions and 57 deletions
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39
examples/portscan.cpp
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@@ -1,5 +1,5 @@
/*
* Copyright (c) 2012, Nasel
* Copyright (c) 2012, Matias Fontanini
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@@ -54,19 +54,17 @@ typedef std::pair<Sniffer*, std::string> sniffer_data;
* the scanned port's status.
*/
bool handler(PDU &pdu) {
TCP *tcp = pdu.find_pdu<TCP>();
if(tcp) {
// Ok, it's a TCP PDU. Is RST flag on? Then port is closed.
if(tcp->get_flag(TCP::RST)) {
// This indicates we should stop sniffing.
if(tcp->get_flag(TCP::SYN))
return false;
cout << "Port: " << setw(5) << tcp->sport() << " closed\n";
}
// Is SYN flag on? Then port is open!
else if(tcp->get_flag(TCP::SYN) && tcp->get_flag(TCP::ACK))
cout << "Port: " << setw(5) << tcp->sport() << " open\n";
TCP &tcp = pdu.rfind_pdu<TCP>();
// Ok, it's a TCP PDU. Is RST flag on? Then port is closed.
if(tcp.get_flag(TCP::RST)) {
// This indicates we should stop sniffing.
if(tcp.get_flag(TCP::SYN))
return false;
cout << "Port: " << setw(5) << tcp.sport() << " closed\n";
}
// Is SYN flag on? Then port is open!
else if(tcp.get_flag(TCP::SYN) && tcp.get_flag(TCP::ACK))
cout << "Port: " << setw(5) << tcp.sport() << " open\n";
return true;
}
@@ -75,17 +73,18 @@ void send_syns(const NetworkInterface &iface, IPv4Address dest_ip, const vector<
// Retrieve the addresses.
NetworkInterface::Info info = iface.addresses();
PacketSender sender;
TCP *tcp = new TCP();
// Allocate the IP PDU
IP ip(dest_ip, info.ip_addr, tcp);
IP ip = IP(dest_ip, info.ip_addr) / TCP();
// Get the reference to the TCP PDU
TCP &tcp = ip.rfind_pdu<TCP>();
// Set the SYN flag on.
tcp->set_flag(TCP::SYN, 1);
tcp.set_flag(TCP::SYN, 1);
// Just some arbitrary port.
tcp->sport(1337);
tcp.sport(1337);
cout << "Sending SYNs..." << endl;
for(vector<string>::const_iterator it = ips.begin(); it != ips.end(); ++it) {
// Set the new port and send the packet!
tcp->dport(atoi(it->c_str()));
tcp.dport(atoi(it->c_str()));
sender.send(ip);
}
// Wait 1 second.
@@ -93,11 +92,11 @@ void send_syns(const NetworkInterface &iface, IPv4Address dest_ip, const vector<
/* Special packet to indicate that we're done. This will be sniffed
* by our function, which will in turn return false.
*/
tcp->set_flag(TCP::RST, 1);
tcp.set_flag(TCP::RST, 1);
// Pretend we're the scanned host...
ip.src_addr(dest_ip);
// We use an ethernet pdu, otherwise the kernel will drop it.
EthernetII eth(info.hw_addr, info.hw_addr, ip.clone());
EthernetII eth = EthernetII(info.hw_addr, info.hw_addr) / ip;
sender.send(eth, iface);
}