path: root/shared/librelational_engine/library.cpp

#include <iostream>
#include <merklecpp.h>
#include <openssl/sha.h>
#include <iomanip>
extern "C" {
#include "library.h"
    extern void merkle_generate_root(char** hashes, const int n, char* root) {
        merkle::Tree tree;
        for (int i = 0; i < n; i++){
            tree.insert(merkle::Hash(hashes[i]));
        }
        std::memcpy(root, tree.root().to_string().c_str(), HASH_SIZE);
    }
    extern void compute_hash(char* computed_hash, const char *content) {

        unsigned char hash[SHA256_DIGEST_LENGTH];
        SHA256_CTX sha256;
        SHA256_Init(&sha256);
        SHA256_Update(&sha256, content, sizeof(content));
        SHA256_Final(hash, &sha256);
        std::stringstream ss;
        for (int i = 0; i < SHA256_DIGEST_LENGTH; i++)
            ss << std::hex << std::setw(2) << std::setfill('0') << static_cast<int>(hash[i]);

        std::memcpy(computed_hash, ss.str().c_str(), HASH_SIZE);
        std::cout << "⚙️ COMPUTED HASH: " << computed_hash << std::endl;
    }

    extern int trash() { return 100; }
}