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Start doing TCP networking

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This commit is contained in:
DcruBro
2026-04-15 21:38:30 +02:00
parent 258ca9474f
commit d631eb190d
10 changed files with 190 additions and 54 deletions
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56
src/block/chain.c
View File

@@ -455,15 +455,43 @@ bool Chain_LoadFromFile(blockchain_t* chain, const char* dirpath, uint256_t* out
FILE* chainFile = fopen(chainPath, "rb+");
FILE* tableFile = fopen(tablePath, "rb+");
if (!metaFile || !chainFile || !tableFile) {
if (metaFile) fclose(metaFile);
if (chainFile) fclose(chainFile);
if (tableFile) fclose(tableFile);
return false;
}
size_t savedSize = 0;
if (fread(&savedSize, sizeof(size_t), 1, metaFile) != 1) return false;
if (fread(outLastSavedHash, sizeof(uint8_t), 32, metaFile) != 32) return false;
if (fread(outCurrentSupply, sizeof(uint256_t), 1, metaFile) != 1) return false;
if (fread(outDifficultyTarget, sizeof(uint32_t), 1, metaFile) != 1) return false;
if (fread(outCurrentReward, sizeof(uint64_t), 1, metaFile) != 1) return false;
if (fread(&savedSize, sizeof(size_t), 1, metaFile) != 1) {
fclose(metaFile);
fclose(chainFile);
fclose(tableFile);
return false;
}
if (fread(outLastSavedHash, sizeof(uint8_t), 32, metaFile) != 32) {
fclose(metaFile);
fclose(chainFile);
fclose(tableFile);
return false;
}
if (fread(outCurrentSupply, sizeof(uint256_t), 1, metaFile) != 1) {
fclose(metaFile);
fclose(chainFile);
fclose(tableFile);
return false;
}
if (fread(outDifficultyTarget, sizeof(uint32_t), 1, metaFile) != 1) {
fclose(metaFile);
fclose(chainFile);
fclose(tableFile);
return false;
}
if (fread(outCurrentReward, sizeof(uint64_t), 1, metaFile) != 1) {
fclose(metaFile);
fclose(chainFile);
fclose(tableFile);
return false;
}
fclose(metaFile);
// TODO: Might add a flag to allow reading from a point onward, but just rewrite for now
@@ -481,6 +509,8 @@ bool Chain_LoadFromFile(blockchain_t* chain, const char* dirpath, uint256_t* out
}
if (loc.blockNumber != i) {
fclose(chainFile);
fclose(tableFile);
return false; // Mismatch
}
@@ -491,24 +521,30 @@ bool Chain_LoadFromFile(blockchain_t* chain, const char* dirpath, uint256_t* out
return false;
}
block_t* blk = Block_Create();
// 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);
fclose(tableFile);
return false;
}
// Read block header and transactions
if (fread(&blk->header, sizeof(block_header_t), 1, chainFile) != 1) {
fclose(chainFile);
Block_Destroy(blk);
fclose(tableFile);
free(blk);
return false;
}
size_t txSize = 0;
if (fread(&txSize, sizeof(size_t), 1, chainFile) != 1) {
fclose(chainFile);
Block_Destroy(blk);
fclose(tableFile);
free(blk);
return false;
}
(void)txSize;
/*for (size_t j = 0; j < txSize; j++) {
signed_transaction_t tx;
@@ -526,7 +562,7 @@ bool Chain_LoadFromFile(blockchain_t* chain, const char* dirpath, uint256_t* out
if (!DynArr_push_back(chain->blocks, blk)) {
fclose(chainFile);
fclose(tableFile);
Block_Destroy(blk);
free(blk);
return false;
}
chain->size++;
@@ -537,6 +573,8 @@ bool Chain_LoadFromFile(blockchain_t* chain, const char* dirpath, uint256_t* out
}
chain->size = savedSize;
fclose(chainFile);
fclose(tableFile);
// After read, you SHOULD verify chain validity. We're not doing it here since returning false is a bit unclear if the read failed or if the chain is invalid.
return true;

2
src/block/transaction.c
View File

@@ -30,7 +30,7 @@ void Transaction_Sign(signed_transaction_t* tx, const uint8_t* privateKey) {
Transaction_CalculateHash(tx, txHash);
Crypto_SignData(
txHash,
sizeof(transaction_t),
32,
privateKey,
tx->signature.signature
);