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#include "HashUtils.h"
#include <QDebug>
#include <QFile>
#include "FileSystem.h"
#include "StringUtils.h"
#include <MurmurHash2.h>
namespace Hashing {
static ModPlatform::ProviderCapabilities ProviderCaps;
Hasher::Ptr createHasher(QString file_path, ModPlatform::ResourceProvider provider)
{
switch (provider) {
case ModPlatform::ResourceProvider::MODRINTH:
return createModrinthHasher(file_path);
case ModPlatform::ResourceProvider::FLAME:
return createFlameHasher(file_path);
default:
qCritical() << "[Hashing]"
<< "Unrecognized mod platform!";
return nullptr;
}
}
Hasher::Ptr createModrinthHasher(QString file_path)
{
return makeShared<ModrinthHasher>(file_path);
}
Hasher::Ptr createFlameHasher(QString file_path)
{
return makeShared<FlameHasher>(file_path);
}
Hasher::Ptr createBlockedModHasher(QString file_path, ModPlatform::ResourceProvider provider)
{
return makeShared<BlockedModHasher>(file_path, provider);
}
Hasher::Ptr createBlockedModHasher(QString file_path, ModPlatform::ResourceProvider provider, QString type)
{
auto hasher = makeShared<BlockedModHasher>(file_path, provider);
hasher->useHashType(type);
return hasher;
}
void ModrinthHasher::executeTask()
{
QFile file(m_path);
try {
file.open(QFile::ReadOnly);
} catch (FS::FileSystemException& e) {
qCritical() << QString("Failed to open JAR file in %1").arg(m_path);
qCritical() << QString("Reason: ") << e.cause();
emitFailed("Failed to open file for hashing.");
return;
}
auto hash_type = ProviderCaps.hashType(ModPlatform::ResourceProvider::MODRINTH).first();
m_hash = ProviderCaps.hash(ModPlatform::ResourceProvider::MODRINTH, &file, hash_type);
file.close();
if (m_hash.isEmpty()) {
emitFailed("Empty hash!");
} else {
emitSucceeded();
emit resultsReady(m_hash);
}
}
void FlameHasher::executeTask()
{
// CF-specific
auto should_filter_out = [](char c) { return (c == 9 || c == 10 || c == 13 || c == 32); };
std::ifstream file_stream(StringUtils::toStdString(m_path).c_str(), std::ifstream::binary);
// TODO: This is very heavy work, but apparently QtConcurrent can't use move semantics, so we can't boop this to another thread.
// How do we make this non-blocking then?
m_hash = QString::number(MurmurHash2(std::move(file_stream), 4 * MiB, should_filter_out));
if (m_hash.isEmpty()) {
emitFailed("Empty hash!");
} else {
emitSucceeded();
emit resultsReady(m_hash);
}
}
BlockedModHasher::BlockedModHasher(QString file_path, ModPlatform::ResourceProvider provider) : Hasher(file_path), provider(provider)
{
setObjectName(QString("BlockedModHasher: %1").arg(file_path));
hash_type = ProviderCaps.hashType(provider).first();
}
void BlockedModHasher::executeTask()
{
QFile file(m_path);
try {
file.open(QFile::ReadOnly);
} catch (FS::FileSystemException& e) {
qCritical() << QString("Failed to open JAR file in %1").arg(m_path);
qCritical() << QString("Reason: ") << e.cause();
emitFailed("Failed to open file for hashing.");
return;
}
m_hash = ProviderCaps.hash(provider, &file, hash_type);
file.close();
if (m_hash.isEmpty()) {
emitFailed("Empty hash!");
} else {
emitSucceeded();
emit resultsReady(m_hash);
}
}
QStringList BlockedModHasher::getHashTypes()
{
return ProviderCaps.hashType(provider);
}
bool BlockedModHasher::useHashType(QString type)
{
auto types = ProviderCaps.hashType(provider);
if (types.contains(type)) {
hash_type = type;
return true;
}
qDebug() << "Bad hash type " << type << " for provider";
return false;
}
} // namespace Hashing
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