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TCP Node boilerplate; CLI interface

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This commit is contained in:
DcruBro
2026-04-23 16:24:26 +02:00
parent d631eb190d
commit 9c99eec3a8
13 changed files with 1635 additions and 578 deletions
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55
src/block/chain.c
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@@ -401,14 +401,18 @@ bool Chain_SaveToFile(blockchain_t* chain, const char* dirpath, uint256_t curren
size_t newSize = DynArr_size(chain->blocks);
fseek(metaFile, 0, SEEK_SET);
fwrite(&newSize, sizeof(size_t), 1, metaFile);
uint32_t difficultyTarget = INITIAL_DIFFICULTY;
if (newSize > 0) {
block_t* lastBlock = (block_t*)DynArr_at(chain->blocks, newSize - 1);
uint8_t lastHash[32];
Block_CalculateHash(lastBlock, lastHash);
fwrite(lastHash, sizeof(uint8_t), 32, metaFile);
difficultyTarget = lastBlock->header.difficultyTarget;
} else {
uint8_t zeroHash[32] = {0};
fwrite(zeroHash, sizeof(uint8_t), 32, metaFile);
}
fwrite(&currentSupply, sizeof(uint256_t), 1, metaFile);
uint32_t difficultyTarget = ((block_t*)DynArr_at(chain->blocks, newSize - 1))->header.difficultyTarget;
fwrite(&difficultyTarget, sizeof(uint32_t), 1, metaFile);
fwrite(&currentReward, sizeof(uint64_t), 1, metaFile);
@@ -425,7 +429,7 @@ bool Chain_SaveToFile(blockchain_t* chain, const char* dirpath, uint256_t curren
return true;
}
bool Chain_LoadFromFile(blockchain_t* chain, const char* dirpath, uint256_t* outCurrentSupply, uint32_t* outDifficultyTarget, uint64_t* outCurrentReward, uint8_t* outLastSavedHash) {
bool Chain_LoadFromFile(blockchain_t* chain, const char* dirpath, uint256_t* outCurrentSupply, uint32_t* outDifficultyTarget, uint64_t* outCurrentReward, uint8_t* outLastSavedHash, bool loadTransactions) {
if (!chain || !chain->blocks || !dirpath || !outCurrentSupply || !outLastSavedHash) {
return false;
}
@@ -521,7 +525,6 @@ bool Chain_LoadFromFile(blockchain_t* chain, const char* dirpath, uint256_t* out
return false;
}
// Header-only load path: do not allocate per-block transaction arrays.
block_t* blk = (block_t*)calloc(1, sizeof(block_t));
if (!blk) {
fclose(chainFile);
@@ -544,18 +547,42 @@ bool Chain_LoadFromFile(blockchain_t* chain, const char* dirpath, uint256_t* out
free(blk);
return false;
}
(void)txSize;
/*for (size_t j = 0; j < txSize; j++) {
signed_transaction_t tx;
if (fread(&tx, sizeof(signed_transaction_t), 1, blockFile) != 1) {
fclose(blockFile);
Block_Destroy(blk);
if (loadTransactions) {
blk->transactions = DYNARR_CREATE(signed_transaction_t, txSize == 0 ? 1 : txSize);
if (!blk->transactions) {
fclose(chainFile);
fclose(tableFile);
free(blk);
return false;
}
Block_AddTransaction(blk, &tx);
}*/ // Transactions are not read, we use the merkle root for validity
blk->transactions = NULL;
for (size_t j = 0; j < txSize; j++) {
signed_transaction_t tx;
if (fread(&tx, sizeof(signed_transaction_t), 1, chainFile) != 1) {
fclose(chainFile);
fclose(tableFile);
DynArr_destroy(blk->transactions);
free(blk);
return false;
}
if (!DynArr_push_back(blk->transactions, &tx)) {
fclose(chainFile);
fclose(tableFile);
DynArr_destroy(blk->transactions);
free(blk);
return false;
}
}
} else {
if (txSize > 0 && fseek(chainFile, (long)(txSize * sizeof(signed_transaction_t)), SEEK_CUR) != 0) {
fclose(chainFile);
fclose(tableFile);
free(blk);
return false;
}
blk->transactions = NULL;
}
// Loading from disk currently restores headers only. Do not run Chain_AddBlock,
// because it enforces transaction presence and mutates balances.
@@ -568,7 +595,7 @@ bool Chain_LoadFromFile(blockchain_t* chain, const char* dirpath, uint256_t* out
chain->size++;
// DynArr_push_back stores blocks by value, so the copied block now owns
// blk->transactions (NULL in header-only load mode). Free wrapper only.
// blk->transactions. Free wrapper only.
free(blk);
}