mirror of
https://github.com/mfontanini/libtins
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91 lines
3.1 KiB
C++
91 lines
3.1 KiB
C++
/*
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* Copyright (c) 2012, Nasel
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following disclaimer
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* in the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#include <iostream>
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#include <set>
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#include <string>
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#include <tins/tins.h>
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using namespace Tins;
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class BeaconSniffer {
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public:
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void run(const std::string &iface);
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private:
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typedef Dot11::address_type address_type;
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typedef std::set<address_type> ssids_type;
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bool callback(PDU &pdu);
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ssids_type ssids;
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};
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void BeaconSniffer::run(const std::string &iface) {
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Sniffer sniffer(iface, 1500, true, "type mgt subtype beacon");
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sniffer.sniff_loop(make_sniffer_handler(this, &BeaconSniffer::callback));
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}
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bool BeaconSniffer::callback(PDU &pdu) {
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// Get the Dot11 layer
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Dot11Beacon *beacon = pdu.find_pdu<Dot11Beacon>();
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// All beacons must have from_ds == to_ds == 0
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if(beacon && !beacon->from_ds() && !beacon->to_ds()) {
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// Get the AP address
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address_type addr = beacon->addr2();
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// Look it up in our set
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ssids_type::iterator it = ssids.find(addr);
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if(it == ssids.end()) {
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// First time we encounter this BSSID.
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try {
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/* If no ssid option is set, then Dot11::ssid will throw
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* a std::runtime_error.
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*/
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std::string ssid = beacon->ssid();
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// Save it so we don't show it again.
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ssids.insert(addr);
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// Display the tuple "address - ssid".
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std::cout << addr << " - " << ssid << std::endl;
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}
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catch(std::runtime_error&) {
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// No ssid, just ignore it.
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}
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}
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}
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return true;
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}
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int main(int argc, char* argv[]) {
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// By default, sniff wlan0
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std::string interface = "wlan0";
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if(argc == 2)
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interface = argv[1];
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BeaconSniffer sniffer;
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sniffer.run(interface);
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}
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