- 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/MplsLayer.h
+++ b/pcappp/include/pcapplusplus/MplsLayer.h
@@ -0,0 +1,126 @@
+#ifndef PACKETPP_MPLS_LAYER
+#define PACKETPP_MPLS_LAYER
+
+#include "Layer.h"
+
+/// @file
+
+/**
+ * \namespace pcpp
+ * \brief The main namespace for the PcapPlusPlus lib
+ */
+namespace pcpp
+{
+
+	/**
+	 * @class MplsLayer
+	 * Represents a MPLS (Multi-Protocol Label Switching) layer
+	 */
+	class MplsLayer : public Layer
+	{
+	private:
+
+		#pragma pack(push, 1)
+		struct mpls_header
+		{
+			uint16_t hiLabel;
+			uint8_t  misc;
+			uint8_t  ttl;
+		};
+		#pragma pack(pop)
+
+		mpls_header* getMplsHeader() const { return (mpls_header*)m_Data; }
+
+	public:
+		 /** A constructor that creates the layer from an existing packet raw data
+		 * @param[in] data A pointer to the raw data
+		 * @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
+		 */
+		MplsLayer(uint8_t* data, size_t dataLen, Layer* prevLayer, Packet* packet) : Layer(data, dataLen, prevLayer, packet) { m_Protocol = MPLS; }
+
+		/**
+		 * A constructor that allocates a new MPLS header
+		 * @param[in] mplsLabel MPLS label
+		 * @param[in] ttl Time-to-leave value
+		 * @param[in] experimentalUseValue Experimental use value
+		 * @param[in] bottomOfStack Bottom-of-stack value which indicate whether the next layer will also be a MPLS label or not
+		 */
+		MplsLayer(uint32_t mplsLabel, uint8_t ttl, uint8_t experimentalUseValue, bool bottomOfStack);
+
+		virtual ~MplsLayer() {}
+
+		/**
+		 * @return TTL value of the MPLS header
+		 */
+		uint8_t getTTL() const { return getMplsHeader()->ttl; }
+
+		/**
+		 * Set the TTL value
+		 * @param[in] ttl The TTL value to set
+		 */
+		void setTTL(uint8_t ttl) { getMplsHeader()->ttl = ttl; }
+
+		/**
+		 * Get an indication whether the next layer is also be a MPLS label or not
+		 * @return True if it's the last MPLS layer, false otherwise
+		 */
+		bool isBottomOfStack() const;
+
+		/**
+		 * Set the bottom-of-stack bit in the MPLS label
+		 * @param[in] val Set or unset the bit
+		 */
+		void setBottomOfStack(bool val);
+
+		/**
+		 * @return The exp value (3 bits) of the MPLS label
+		 */
+		uint8_t getExperimentalUseValue() const;
+
+		/**
+		 * Set the exp value (3 bits) of the MPLS label
+		 * @param[in] val The exp value to set. val must be a valid number meaning between 0 and 7 (inclusive)
+		 * @return True if exp value was set successfully or false if val has invalid value
+		 */
+		bool setExperimentalUseValue(uint8_t val);
+
+		/**
+		 * @return The MPLS label value (20 bits)
+		 */
+		uint32_t getMplsLabel() const;
+
+		/**
+		 * Set the MPLS label (20 bits)
+		 * @param[in] label The label to set. label must be a valid number meaning between 0 and 0xFFFFF (inclusive)
+		 * @return True if label was set successfully or false if label has invalid value
+		 */
+		bool setMplsLabel(uint32_t label);
+
+		// implement abstract methods
+
+		/**
+		 * Currently identifies the following next layers: IPv4Layer, IPv6Layer, MplsLayer. Otherwise sets PayloadLayer
+		 */
+		void parseNextLayer();
+
+		/**
+		 * @return Size of MPLS header (4 bytes)
+		 */
+		size_t getHeaderLen() const { return sizeof(mpls_header); }
+
+		/**
+		 * Set/unset the bottom-of-stack bit according to next layer: if it's a MPLS layer then bottom-of-stack will be unset. If it's not a
+		 * MPLS layer this bit will be set
+		 */
+		void computeCalculateFields();
+
+		std::string toString() const;
+
+		OsiModelLayer getOsiModelLayer() const { return OsiModelNetworkLayer; }
+	};
+
+} // namespace pcpp
+
+#endif /* PACKETPP_MPLS_LAYER */