mirror of
https://github.com/mfontanini/libtins
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44 lines
1.3 KiB
C++
44 lines
1.3 KiB
C++
#ifndef __PDU_H
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#define __PDU_H
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#include <stdint.h>
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namespace Tins {
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class PDU {
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public:
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PDU(uint32_t flag, PDU *next_pdu = 0);
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virtual ~PDU();
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/* This PDU's header size only. */
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virtual uint32_t header_size() const = 0;
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/* This PDU's trailer size only. Defaults to 0. */
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virtual uint32_t trailer_size() const { return 0; }
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/* The size of the whole chain of PDUs, including this one. */
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inline uint32_t size() const;
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inline uint32_t flag() const { return _flag; }
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inline const PDU *inner_pdu() const { return _inner_pdu; }
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void flag(uint32_t new_flag);
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/* When setting a new inner_pdu, the instance takes
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* ownership of the object, therefore deleting it when
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* it's no longer required. */
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void inner_pdu(PDU *next_pdu);
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/* Serializes the whole chain of PDU's, including this one. */
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uint8_t *serialize();
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/* Serialize this PDU storing the result in buffer. */
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void serialize(uint8_t *buffer, uint32_t total_sz);
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protected:
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/* Each PDU's own implementation of serialization. */
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virtual void write_serialization(uint8_t *buffer, uint32_t total_sz) = 0;
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private:
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uint32_t _flag;
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PDU *_inner_pdu;
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};
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};
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#endif
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