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- #ifndef BIDIRECTIONALCHANNELS_H
- #define BIDIRECTIONALCHANNELS_H
- #include "CovertChannel.h"
- #include "Protocols/CovertProtocolBidirectional.hpp"
- /**
- * @class BidirectionalChannels
- *
- * Abstract class which implements the methods and constructors which are equal in all bidirectional channels.
- *
- * @param N number of bytes which can be used to transmit data
- * @param PASSIVE true - server only reacts to incoming channel | false - server initiates channel
- */
- template <int N, bool PASSIVE> class BidirectionalChannels : public CovertChannel {
- public:
- /**
- * Sets up a CovertChannel.
- *
- * Creates a CovertChannel, sets the network interfaces for sniffing and sending and sets the filter.
- *
- * @param innerInterface name of the interface of the inner network
- * @param outerInterface name of the interface of the outer network
- * @param ownIP IP of this server
- * @param targetIP IP of the target server
- * @param targetPort Port of the target server
- */
- BidirectionalChannels(const std::string &innerInterface, const std::string &outerInterface, const std::string &ownIP, const std::string &targetIP,
- const std::string &targetPort)
- : CovertChannel(innerInterface, outerInterface,
- "(not (tcp and " + std::string(PASSIVE ? "src" : "dst") + " host " + targetIP + " and " + std::string(PASSIVE ? "src" : "dst") +
- " port " + targetPort + ")) and (not (dst host " + ownIP + "))",
- "(not (tcp and " + std::string(PASSIVE ? "dst" : "src") + " host " + targetIP + " and " + std::string(PASSIVE ? "dst" : "src") +
- " port " + targetPort + ")) and (not (dst host " + ownIP + "))",
- "tcp and " + std::string(PASSIVE ? "src" : "dst") + " host " + targetIP + " and " + std::string(PASSIVE ? "src" : "dst") + " port " +
- targetPort,
- "tcp and " + std::string(PASSIVE ? "dst" : "src") + " host " + targetIP + " and " + std::string(PASSIVE ? "dst" : "src") + " port " +
- targetPort) {}
- /**
- * Destroys the CovertChannel.
- */
- virtual ~BidirectionalChannels() {}
- /**
- * Send a file over the covert channel.
- *
- * @param fileName name of the file in the file directory
- * @return true - file will be sent | false - file was not accepted
- */
- virtual bool sendFile(const std::string &fileName) {
- if constexpr (PASSIVE) {
- return false;
- } else {
- transferStart = std::time(nullptr);
- return protocol.sendFile(fileName);
- }
- }
- /**
- * Get the progress
- *
- * @return progress counters
- */
- virtual std::pair<uint32_t, uint32_t> getProgress() {
- if (isTransferRunning()) {
- return protocol.getProgress();
- } else {
- return std::pair<uint32_t, uint32_t>(0, 0);
- }
- }
- /**
- * Test if a transfer is running
- *
- * @return true - a transfer runs | false - no transfer runs
- */
- virtual bool isTransferRunning() { return protocol.isTransferRunning(); }
- protected:
- /**
- * protocol used to transmit data
- */
- CovertProtocolBidirectional<N, PASSIVE> protocol;
- };
- #endif
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