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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab ft=cpp
#pragma once
#include "common/ceph_crypto.h"
#include "common/dout.h"
#include "common/async/yield_context.h"
#include "rgw_putobj.h"
#include "rgw_sal_fwd.h"
//control characters
void bencode_dict(bufferlist& bl);
void bencode_list(bufferlist& bl);
void bencode_end(bufferlist& bl);
//key len
void bencode_key(std::string_view key, bufferlist& bl);
//single values
void bencode(int value, bufferlist& bl);
//single values
void bencode(std::string_view str, bufferlist& bl);
//dictionary elements
void bencode(std::string_view key, int value, bufferlist& bl);
//dictionary elements
void bencode(std::string_view key, std::string_view value, bufferlist& bl);
// read the bencoded torrent file from the given object
int rgw_read_torrent_file(const DoutPrefixProvider* dpp,
rgw::sal::Object* object,
ceph::bufferlist &bl,
optional_yield y);
// PutObj filter that builds a torrent file during upload
class RGWPutObj_Torrent : public rgw::putobj::Pipe {
size_t max_len = 0;
size_t piece_len = 0;
bufferlist piece_hashes;
size_t len = 0;
size_t piece_offset = 0;
uint32_t piece_count = 0;
ceph::crypto::SHA1 digest;
public:
RGWPutObj_Torrent(rgw::sal::DataProcessor* next,
size_t max_len, size_t piece_len);
int process(bufferlist&& data, uint64_t logical_offset) override;
// after processing is complete, return the bencoded torrent file
bufferlist bencode_torrent(std::string_view filename) const;
};
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