- add Pcap++ Windows build

2023-06-23 16:30:48 +03:00
parent 9fae569a23
commit 3c84cbb96b
115 changed files with 31597 additions and 1 deletions
--- a/pcappp/include/pcapplusplus/UdpLayer.h
+++ b/pcappp/include/pcapplusplus/UdpLayer.h
@@ -0,0 +1,105 @@
+#ifndef PACKETPP_UDP_LAYER
+#define PACKETPP_UDP_LAYER
+
+#include "Layer.h"
+
+/// @file
+
+/**
+ * \namespace pcpp
+ * \brief The main namespace for the PcapPlusPlus lib
+ */
+namespace pcpp
+{
+
+	/**
+	 * @struct udphdr
+	 * Represents an UDP protocol header
+	 */
+#pragma pack(push,1)
+	struct udphdr
+	{
+		/** Source port */
+		uint16_t portSrc;
+		/** Destination port */
+		uint16_t portDst;
+		/** Length of header and payload in bytes */
+		uint16_t length;
+		/**  Error-checking of the header and data */
+		uint16_t headerChecksum;
+	};
+#pragma pack(pop)
+
+
+	/**
+	 * @class UdpLayer
+	 * Represents an UDP (User Datagram Protocol) protocol layer
+	 */
+	class UdpLayer : public Layer
+	{
+	public:
+		/**
+		 * A constructor that creates the layer from an existing packet raw data
+		 * @param[in] data A pointer to the raw data (will be casted to @ref udphdr)
+		 * @param[in] dataLen Size of the data in bytes
+		 * @param[in] prevLayer A pointer to the previous layer
+		 * @param[in] packet A pointer to the Packet instance where layer will be stored in
+		 */
+		UdpLayer(uint8_t* data, size_t dataLen, Layer* prevLayer, Packet* packet) : Layer(data, dataLen, prevLayer, packet) { m_Protocol = UDP; }
+
+		/**
+		 * A constructor that allocates a new UDP header with source and destination ports
+		 * @param[in] portSrc Source UDP port address
+		 * @param[in] portDst Destination UDP port
+		 */
+		UdpLayer(uint16_t portSrc, uint16_t portDst);
+
+		/**
+		 * Get a pointer to the UDP header. Notice this points directly to the data, so every change will change the actual packet data
+		 * @return A pointer to the @ref udphdr
+		 */
+		udphdr* getUdpHeader() const { return (udphdr*)m_Data; }
+
+		/**
+		 * @return UDP source port
+		 */
+		uint16_t getSrcPort() const;
+
+		/**
+		 * @return UDP destination port
+		 */
+		uint16_t getDstPort() const;
+
+		/**
+		 * Calculate the checksum from header and data and possibly write the result to @ref udphdr#headerChecksum
+		 * @param[in] writeResultToPacket If set to true then checksum result will be written to @ref udphdr#headerChecksum
+		 * @return The checksum result
+		 */
+		uint16_t calculateChecksum(bool writeResultToPacket);
+
+		// implement abstract methods
+
+		/**
+		 * Currently identifies the following next layers: DnsLayer, DhcpLayer, VxlanLayer, SipRequestLayer, SipResponseLayer,
+		 * RadiusLayer. Otherwise sets PayloadLayer
+		 */
+		void parseNextLayer();
+
+		/**
+		 * @return Size of @ref udphdr
+		 */
+		size_t getHeaderLen() const { return sizeof(udphdr); }
+
+		/**
+		 * Calculate @ref udphdr#headerChecksum field
+		 */
+		void computeCalculateFields();
+
+		std::string toString() const;
+
+		OsiModelLayer getOsiModelLayer() const { return OsiModelTransportLayer; }
+	};
+
+} // namespace pcpp
+
+#endif /* PACKETPP_UDP_LAYER */