CSniff

Simple Linux C++ application built using ImGUI to capture packets.

Documentation

Description

The PacketSniffer class provides functionality for capturing packets from a network interface using raw sockets. It allows starting and stopping packet capture and provides methods to retrieve captured packets.

Example usage

An example is available in the teste.cpp file.

Class Members

PacketSniffer()

• Constructor: Creates a raw socket for packet capturing and initializes captureActive to false.

~PacketSniffer()

• Destructor: Stops packet capture and closes the socket.

void startCapture(std::vector<std::pair<int, unsigned char *>> &packetBuffer)

• Starts packet capture in a separate thread.
• Parameters:
  • packetBuffer: A reference to a vector where captured packets will be stored.

void stopCapture()

• Stops packet capture.

std::vector<std::pair<int, unsigned char *>> capturePackets()

• Captures a single packet synchronously.
• Returns:
  • A vector containing a single pair of packet size and data.

std::string printData(const std::pair<int, unsigned char *> &packet)

• Formats and prints the captured packet data.
• Parameters:
  • packet: A pair containing packet size and data.
• Returns:
  • A string representation of the packet data.

Private Members

int sock

• Raw socket descriptor.

std::atomic<bool> captureActive

• Atomic boolean flag to control packet capture.

int createSocket()

• Creates a raw socket for packet capture.
• Returns:
  • The socket descriptor.

void closeSocket()

• Closes the raw socket.

std::pair<int, unsigned char *> readSocket()

• Reads data from the raw socket.
• Returns:
  • A pair containing the size of the received data and a pointer to the data buffer.

void captureThreadFunc(std::vector<std::pair<int, unsigned char *>> &packetBuffer)

• Thread function for continuously capturing packets.
• Parameters:
  • packetBuffer: A reference to a vector where captured packets will be stored.