const std::string getHash(std::string fname){
std::ifstream f;
f.open(fname.c_str());
SHA256 digest;
const size_t BufferSize = 144 * 7 * 1024;
char * buffer = new char[BufferSize];
if (f != NULL){
f.read(buffer, BufferSize);//read(char *s, streamsize n)
std::size_t numByte = size_t(f.gcount());//gcount(): return the number of characters extracted by the last unformatted input operation
digest.add(buffer, numByte);
}
f.close();
delete[] buffer;
return digest.getHash();
}
std::string GetSha256ForFile(std::filesystem::path Filename)
{
SHA256 SHA;
std::ifstream InStream(Filename.string());
unsigned char tmpbuf[256];
if (!InStream.is_open())
return "";
while (!InStream.eof())
{
InStream.read((char*)tmpbuf, 256);
size_t cnt = InStream.gcount();
SHA.add(tmpbuf, cnt);
}
return std::string(SHA.getHash());
}
void
TransactionFrame::storeTransaction(LedgerManager& ledgerManager,
LedgerDelta const& delta, int txindex,
SHA256& resultHasher) const
{
auto txBytes(xdr::xdr_to_opaque(mEnvelope));
auto txResultBytes(xdr::xdr_to_opaque(getResultPair()));
resultHasher.add(txResultBytes);
std::string txBody = base64::encode(
reinterpret_cast<const unsigned char*>(txBytes.data()), txBytes.size());
std::string txResult = base64::encode(
reinterpret_cast<const unsigned char*>(txResultBytes.data()),
txResultBytes.size());
xdr::opaque_vec<> txMeta(delta.getTransactionMeta());
std::string meta = base64::encode(
reinterpret_cast<const unsigned char*>(txMeta.data()), txMeta.size());
string txIDString(binToHex(getContentsHash()));
auto timer = ledgerManager.getDatabase().getInsertTimer("txhistory");
soci::statement st =
(ledgerManager.getDatabase().getSession().prepare
<< "INSERT INTO txhistory (txid, ledgerseq, txindex, txbody, "
"txresult, txmeta) VALUES "
"(:id,:seq,:txindex,:txb,:txres,:meta)",
soci::use(txIDString),
soci::use(ledgerManager.getCurrentLedgerHeader().ledgerSeq),
soci::use(txindex), soci::use(txBody), soci::use(txResult),
soci::use(meta));
st.execute(true);
if (st.get_affected_rows() != 1)
{
throw std::runtime_error("Could not update data in SQL");
}
}
std::string GetSha256ForFile(std::string Filename)
{
SHA256 SHA;
#ifndef WIN32
std::ifstream InStream(Filename.c_str());
#else
std::ifstream InStream(Utility::Widen(Filename).c_str());
#endif
unsigned char tmpbuf[256];
if (!InStream.is_open())
return "";
while (!InStream.eof())
{
InStream.read((char*)tmpbuf, 256);
size_t cnt = InStream.gcount();
SHA.add(tmpbuf, cnt);
}
return std::string(SHA.getHash());
}
