68 lines
2 KiB
C
68 lines
2 KiB
C
#include <stdlib.h>
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#include <string.h>
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#include "libp2p/utils/vector.h"
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struct ProviderEntry {
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unsigned char* hash;
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int hash_size;
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unsigned char* peer_id;
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int peer_id_size;
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};
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struct ProviderStore {
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struct Libp2pVector* provider_entries;
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};
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/***
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* Stores hashes, and peers where you can possibly get them
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*/
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/**
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* Create a new ProviderStore
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* @returns a ProviderStore struct
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*/
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struct ProviderStore* libp2p_providerstore_new() {
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struct ProviderStore* out = (struct ProviderStore*)malloc(sizeof(struct ProviderStore));
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if (out != NULL) {
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out->provider_entries = libp2p_utils_vector_new(4);
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}
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return out;
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}
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/***
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* Clean resources used by a ProviderStore
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* @param in the ProviderStore to clean up
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*/
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void libp2p_providerstore_free(struct ProviderStore* in) {
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if (in != NULL) {
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libp2p_utils_vector_free(in->provider_entries);
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free(in);
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in = NULL;
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}
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}
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void libp2p_providerstore_add(struct ProviderStore* store, unsigned char* hash, int hash_size, unsigned char* peer_id, int peer_id_size) {
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struct ProviderEntry* entry = (struct ProviderEntry*)malloc(sizeof(struct ProviderEntry));
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entry->hash = malloc(hash_size);
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memcpy(entry->hash, hash, hash_size);
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entry->hash_size = hash_size;
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entry->peer_id = malloc(peer_id_size);
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memcpy(entry->peer_id, peer_id, peer_id_size);
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entry->peer_id_size = peer_id_size;
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libp2p_utils_vector_add(store->provider_entries, entry);
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}
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int libp2p_providerstore_get(struct ProviderStore* store, unsigned char* hash, int hash_size, unsigned char** peer_id, int *peer_id_size) {
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struct ProviderEntry* current = NULL;
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for (int i = 0; i < store->provider_entries->total; i++) {
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current = (struct ProviderEntry*)libp2p_utils_vector_get(store->provider_entries, i);
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if (current->hash_size == hash_size && memcmp(current->hash, hash, hash_size) == 0) {
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*peer_id = malloc(current->peer_id_size);
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memcpy(*peer_id, current->peer_id, current->peer_id_size);
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*peer_id_size = current->peer_id_size;
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return 1;
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}
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}
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return 0;
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}
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