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79 lines
1.8 KiB
C++
79 lines
1.8 KiB
C++
#ifndef LLARP_BENCODE_H
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#define LLARP_BENCODE_H
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#include <constants/proto.hpp>
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#include <util/buffer.hpp>
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#include <util/common.hpp>
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#include <functional>
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#include <stdbool.h>
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#include <stdint.h>
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/**
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* bencode.h
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*
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* helper functions for handling bencoding
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* https://en.wikipedia.org/wiki/Bencode for more information on the format
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* we utilize llarp_buffer which provides memory management
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*/
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bool
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bencode_read_integer(llarp_buffer_t* buffer, uint64_t* result);
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bool
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bencode_read_string(llarp_buffer_t* buffer, llarp_buffer_t* result);
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bool
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bencode_write_bytestring(llarp_buffer_t* buff, const void* data, size_t sz);
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bool
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bencode_write_uint64(llarp_buffer_t* buff, uint64_t i);
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bool
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bencode_write_version_entry(llarp_buffer_t* buff);
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bool
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bencode_start_list(llarp_buffer_t* buff);
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bool
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bencode_start_dict(llarp_buffer_t* buff);
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bool
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bencode_end(llarp_buffer_t* buff);
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struct dict_reader
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{
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/// makes passing data into on_key easier
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llarp_buffer_t* buffer;
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/// not currently used, maybe used in the future to pass additional
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/// information to on_key
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void* user;
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/**
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* called when we got a key string, return true to continue iteration
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* called with null key on done iterating
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*/
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std::function< bool(dict_reader*, llarp_buffer_t*) > on_key;
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};
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bool
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bencode_read_dict(llarp_buffer_t* buff, struct dict_reader* r);
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struct list_reader
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{
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/// makes passing data into on_item easier
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llarp_buffer_t* buffer;
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/// not currently used, maybe used in the future to pass additional
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/// information to on_item
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void* user;
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/**
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* called with true when we got an element, return true to continue iteration
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* called with false on iteration completion
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*/
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std::function< bool(list_reader*, bool) > on_item;
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};
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bool
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bencode_read_list(llarp_buffer_t* buff, struct list_reader* r);
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#endif
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