58 lines
2.1 KiB
C
58 lines
2.1 KiB
C
#pragma once
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struct Libp2pRecord {
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// the key that references this record
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char* key;
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size_t key_size;
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// the actual value this record is storing
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unsigned char* value;
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size_t value_size;
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// hash of the author's public key
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char* author;
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size_t author_size;
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// a PKI signature for the key + value + author
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unsigned char* signature;
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size_t signature_size;
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// time the record was received, set by receiver
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char* time_received;
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size_t time_received_size;
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};
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/**
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* Convert a Libp2pRecord into protobuf format
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* @param in the Libp2pRecord to convert
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* @param buffer where to store the protobuf
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* @param max_buffer_size the size of the allocated buffer
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* @param bytes_written the size written into buffer
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* @returns true(1) on success, otherwise false(0)
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*/
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int libp2p_record_protobuf_encode(const struct Libp2pRecord* in, unsigned char* buffer, size_t max_buffer_size, size_t* bytes_written);
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/**
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* Generates an estimate of the buffer size needed to encode the struct
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* @param in the Libp2pRecord that you want to encode
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* @returns the approximate number of bytes required
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*/
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size_t libp2p_record_protobuf_encode_size(const struct Libp2pRecord* in);
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/**
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* Convert a protobuf byte array into a Libp2pRecord
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* @param in the byte array
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* @param in_size the size of the byte array
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* @param out a pointer to the new Libp2pRecord
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* @returns true(1) on success, otherwise false(0)
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*/
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int libp2p_record_protobuf_decode(const unsigned char* in, size_t in_size, struct Libp2pRecord** out);
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/**
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* This method does all the hard stuff in one step. It fills a Libp2pRecord struct, and converts it into a protobuf
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* @param record a pointer to the protobuf results
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* @param rec_size the number of bytes used in the area pointed to by record
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* @param sk the private key used to sign
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* @param key the key in the Libp2pRecord
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* @param value the value in the Libp2pRecord
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* @param vlen the length of value
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* @param sign true if you want to sign the record
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* @returns 0 on success, -1 on error
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*/
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int libp2p_record_make_put_record (char** record, size_t *rec_size, const struct RsaPrivateKey* sk, const char* key, const char* value, size_t vlen, int sign);
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