zeek/src/file_analysis/FileReassembler.h
Tim Wojtulewicz 4035ec7760 More final markings.
These classes were recommended by gcc's -Wsugggest-final-types as places where
large numbers of virtual functions could be optimized away.
2020-04-03 18:35:24 -04:00

59 lines
1.4 KiB
C++

#pragma once
#include "Reassem.h"
class BroFile;
class Connection;
namespace file_analysis {
class File;
class FileReassembler final : public Reassembler {
public:
FileReassembler(File* f, uint64_t starting_offset);
~FileReassembler() override;
void Done();
// Checks if we have delivered all contents that we can possibly
// deliver for this endpoint.
void CheckEOF();
/**
* Discards all contents of the reassembly buffer. This will spin through
* the buffer and call File::DeliverStream() and File::Gap() wherever
* appropriate.
* @return the number of new bytes now detected as gaps in the file.
*/
uint64_t Flush();
/**
* Discards all contents of the reassembly buffer up to a given sequence
* number. This will spin through the buffer and call
* File::DeliverStream() and File::Gap() wherever appropriate.
* @param sequence the sequence number to flush until.
* @return the number of new bytes now detected as gaps in the file.
*/
uint64_t FlushTo(uint64_t sequence);
/**
* @return whether the reassembler is currently is the process of flushing
* out the contents of its buffer.
*/
bool IsCurrentlyFlushing() const
{ return flushing; }
protected:
FileReassembler();
void Undelivered(uint64_t up_to_seq) override;
void BlockInserted(DataBlockMap::const_iterator it) override;
void Overlap(const u_char* b1, const u_char* b2, uint64_t n) override;
File* the_file;
bool flushing;
};
} // namespace analyzer::*