Exemplo n.º 1
0
bool Request::addTarget(const BinaryString &target, bool finished)
{
	if(mPath.empty() || target.empty()) return false;

	String prefix = mPath;
	if(prefix.size() >= 2 && prefix[prefix.size()-1] == '/')
		prefix.resize(prefix.size()-1);

	mFinishedAfterTarget|= finished;

	return incoming(Network::Locator(prefix, "/", link()) , target);
}
Exemplo n.º 2
0
String Cache::path(const BinaryString &digest) const
{
	Assert(!digest.empty());
	return mDirectory + Directory::Separator + digest.toString();
}
Exemplo n.º 3
0
void Resource::process(const String &filename, const String &name, const String &type, const String &secret)
{
	BinaryString salt;
	
	// If secret is not empty then this is an encrypted resource
	if(!secret.empty())
	{
		// Generate salt from plaintext
		// Because we need to be able to recognize data is identical even when encrypted
		BinaryString digest;
		File file(filename, File::Read);
		Sha256().compute(file, digest);
		Sha256().pbkdf2_hmac(digest, type, salt, 32, 100000);
		Assert(!salt.empty());
	}
	
	// Fill index record
	delete mIndexRecord;
	int64_t size = File::Size(filename);
	mIndexRecord = new Resource::IndexRecord;
	mIndexRecord->name = name;
	mIndexRecord->type = type;
	mIndexRecord->size = size;
	mIndexRecord->salt = salt;
	mIndexRecord->blockDigests.reserve(size/Block::Size);
	
	// Process blocks
	File file(filename, File::Read);
	BinaryString blockDigest;
	
	if(!secret.empty())
	{
		BinaryString key;
		Sha256().pbkdf2_hmac(secret, salt, key, 32, 100000);
		
		uint64_t i = 0;
		while(true)
		{
			BinaryString subsalt;
			subsalt.writeBinary(i);
			
			// Generate subkey
			BinaryString subkey;
			Sha256().pbkdf2_hmac(key, subsalt, subkey, 32, 100);
			
			// Generate iv
			BinaryString iv;
			Sha256().pbkdf2_hmac(salt, subsalt, iv, 16, 100);
			
			if(!Block::EncryptFile(file, subkey, iv, blockDigest))
				break;
			
			mIndexRecord->blockDigests.append(blockDigest);
			++i;
		}
	} 
	else {
		while(Block::ProcessFile(file, blockDigest))
			mIndexRecord->blockDigests.append(blockDigest);
	}
	
	// Create index
	String tempFileName = File::TempName();
	File tempFile(tempFileName, File::Truncate);
	BinarySerializer serializer(&tempFile);
	serializer.write(mIndexRecord);
	tempFile.close();
	String indexFilePath = Cache::Instance->move(tempFileName);
	
	// Create index block
	delete mIndexBlock;
	mIndexBlock = new Block(indexFilePath);
}