Remove unused LcpEchoHandler

xfangfang · May 24, 2024 · 8866b72 · 8866b72
1 parent 4ff6a3d
commit 8866b72
Show file tree

Hide file tree

Showing 2 changed files with 0 additions and 66 deletions.
diff --git a/include/exploit.h b/include/exploit.h
@@ -66,21 +66,6 @@ class PacketBuilder {
     static pcpp::PPPoEDiscoveryLayer *getPPPoEDiscoveryLayer(const pcpp::Packet &packet, uint8_t type);
 };
 
-class LcpEchoHandler {
-public:
-    explicit LcpEchoHandler(const std::string &iface);
-
-    void run();
-
-    void stop();
-
-    ~LcpEchoHandler();
-
-private:
-    pcpp::PcapLiveDevice *dev;
-    bool running{};
-};
-
 class Exploit {
 public:
     Exploit() = default;

diff --git a/src/exploit.cpp b/src/exploit.cpp
@@ -82,57 +82,6 @@ struct Cookie {
 #define startBlockingCapture(cb) if(dev->startCaptureBlockingMode(cb, nullptr, this->timeout) != 1) { return running ? RETURN_FAIL : RETURN_STOP; }
 #define startBlockingCaptureWithCookie(cb, cookie) if(dev->startCaptureBlockingMode(cb, cookie, this->timeout) != 1) { return running ? RETURN_FAIL : RETURN_STOP; }
 
-LcpEchoHandler::LcpEchoHandler(const std::string &iface) {
-    dev = pcpp::PcapLiveDeviceList::getInstance().getPcapLiveDeviceByName(iface);
-    if (dev == nullptr) {
-        std::cout << "[-] LcpEchoHandler Cannot find interface with name of '" << iface << "'" << std::endl;
-        exit(1);
-    }
-
-    pcpp::PcapLiveDevice::DeviceConfiguration config;
-    config.direction = pcpp::PcapLiveDevice::PCPP_IN;
-    config.packetBufferTimeoutMs = 1;
-    if (!dev->open(config)) {
-        std::cout << "[-] LcpEchoHandler Cannot open device" << std::endl;
-        exit(1);
-    }
-
-    if (!dev->setFilter("pppoes && !ip")) {
-        std::cout << "[-] LcpEchoHandler cannot set filter" << std::endl;
-    }
-}
-
-void LcpEchoHandler::run() {
-    running = true;
-    dev->startCaptureBlockingMode(
-            [](pcpp::RawPacket *packet, pcpp::PcapLiveDevice *device, void *cookie) -> bool {
-                auto *self = (LcpEchoHandler *) cookie;
-                pcpp::Packet parsedPacket(packet, pcpp::PPPoESession);
-                auto *pppLayer = PacketBuilder::getPPPoESessionLayer(parsedPacket, PCPP_PPP_LCP);
-                if (!pppLayer) return !self->running;
-                if (pppLayer->getLayerPayload()[0] != ECHO_REQ) return !self->running;
-                auto *etherLayer = parsedPacket.getLayerOfType<pcpp::EthLayer>();
-                if (!etherLayer) return !self->running;
-
-                auto &&echoReply = PacketBuilder::lcpEchoReply(etherLayer->getDestMac(), etherLayer->getSourceMac(),
-                                                               pppLayer->getPPPoEHeader()->sessionId,
-                                                               pppLayer->getLayerPayload()[1], // id
-                                                               0); // todo: check if we need to echo back the correct magic number ?
-                // correct magic number:  *(uint32_t *) &pppLayer->getLayerPayload()[4]
-                self->dev->sendPacket(&echoReply);
-                return !self->running;
-            }, this, 0);
-}
-
-void LcpEchoHandler::stop() {
-    running = false;
-}
-
-LcpEchoHandler::~LcpEchoHandler() {
-    this->stop();
-    this->dev->close();
-}
-
 int Exploit::setFirmwareVersion(FirmwareVersion version) {
     switch (version) {
         case FirmwareVersion::FIRMWARE_700_702: