forked from agorise/c-ipfs
c8fdb084e4
The files are now stored in the same format. Now it is necessary to reverse engineer the directory structure
56 lines
2.1 KiB
C
56 lines
2.1 KiB
C
/**
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* Some code to help with the datastore / blockstore interface
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* NOTE: the datastore stores things under a multihash key
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*/
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#include "libp2p/crypto/encoding/base32.h"
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#include "ipfs/datastore/ds_helper.h"
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/**
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* Generate a base32 key based on the passed in binary_array (which is normally a multihash)
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* @param binary_array what to base the key on
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* @param array_length the size of the binary array
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* @param results where the key will be put
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* @param max_results_length the size of the results buffer
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* @param results_length the length of the generated key
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* @returns true(1) on success
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*/
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int ipfs_datastore_helper_ds_key_from_binary(const unsigned char* binary_array, size_t array_length,
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unsigned char* results, size_t max_results_length, size_t* results_length) {
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size_t encoded_length = libp2p_crypto_encoding_base32_encode_size(array_length);
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if (encoded_length > max_results_length)
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return 0;
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*results_length = max_results_length;
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int retVal = libp2p_crypto_encoding_base32_encode(binary_array, array_length, results, results_length);
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if (retVal == 0) {
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*results_length = 0;
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return 0;
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}
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return 1;
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}
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/**
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* Generate a binary array (normally a multihash) based on the passed in datastore key
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* @param ds_key the base32 encoded key
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* @param key_length the length of the base32 "string"
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* @param binary_array where to put the decoded value
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* @param max_binary_array_length the memory size of binary_array
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* @param completed_binary_array_length the length of what was written to the binary_array
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* @returns true(1) on success
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*/
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int ipfs_datastore_helper_binary_from_ds_key(const unsigned char* ds_key, size_t key_length, unsigned char* binary_array,
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size_t max_binary_array_length, size_t* completed_binary_array_length) {
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size_t decoded_length = libp2p_crypto_encoding_base32_decode_size(key_length);
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if (decoded_length > max_binary_array_length)
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return 0;
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*completed_binary_array_length = max_binary_array_length;
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int retVal = libp2p_crypto_encoding_base32_decode(ds_key, key_length, binary_array, completed_binary_array_length);
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if (retVal == 0) {
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*completed_binary_array_length = 0;
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return 0;
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}
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return 1;
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}
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