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//
// FTPStreamFactory.cpp
//
// Library: Net
// Package: FTP
// Module: FTPStreamFactory
//
// Copyright (c) 2005-2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// SPDX-License-Identifier: BSL-1.0
//
#include "Poco/Net/FTPStreamFactory.h"
#include "Poco/Net/FTPClientSession.h"
#include "Poco/Net/NetException.h"
#include "Poco/URI.h"
#include "Poco/URIStreamOpener.h"
#include "Poco/UnbufferedStreamBuf.h"
#include "Poco/Path.h"
using Poco::URIStreamFactory;
using Poco::URI;
using Poco::URIStreamOpener;
using Poco::UnbufferedStreamBuf;
using Poco::Path;
namespace Poco {
namespace Net {
class FTPStreamBuf: public UnbufferedStreamBuf
{
public:
FTPStreamBuf(std::istream& istr):
_istr(istr)
{
// make sure exceptions from underlying string propagate
_istr.exceptions(std::ios::badbit);
}
~FTPStreamBuf()
{
}
private:
int readFromDevice()
{
return _istr.get();
}
std::istream& _istr;
};
class FTPIOS: public virtual std::ios
{
public:
FTPIOS(std::istream& istr):
_buf(istr)
{
poco_ios_init(&_buf);
}
~FTPIOS()
{
}
FTPStreamBuf* rdbuf()
{
return &_buf;
}
protected:
FTPStreamBuf _buf;
};
class FTPStream: public FTPIOS, public std::istream
{
public:
FTPStream(std::istream& istr, FTPClientSession* pSession):
FTPIOS(istr),
std::istream(&_buf),
_pSession(pSession)
{
}
~FTPStream()
{
delete _pSession;
}
private:
FTPClientSession* _pSession;
};
FTPPasswordProvider::FTPPasswordProvider()
{
}
FTPPasswordProvider::~FTPPasswordProvider()
{
}
std::string FTPStreamFactory::_anonymousPassword("poco@localhost");
FTPPasswordProvider* FTPStreamFactory::_pPasswordProvider(0);
FTPStreamFactory::FTPStreamFactory()
{
}
FTPStreamFactory::~FTPStreamFactory()
{
}
std::istream* FTPStreamFactory::open(const URI& uri)
{
poco_assert (uri.getScheme() == "ftp");
FTPClientSession* pSession = new FTPClientSession(uri.getHost(), uri.getPort());
try
{
std::string username;
std::string password;
getUserInfo(uri, username, password);
std::string path;
char type;
getPathAndType(uri, path, type);
pSession->login(username, password);
if (type == 'a')
pSession->setFileType(FTPClientSession::TYPE_TEXT);
Path p(path, Path::PATH_UNIX);
p.makeFile();
for (int i = 0; i < p.depth(); ++i)
pSession->setWorkingDirectory(p[i]);
std::string file(p.getFileName());
std::istream& istr = (type == 'd' ? pSession->beginList(file) : pSession->beginDownload(file));
return new FTPStream(istr, pSession);
}
catch (...)
{
delete pSession;
throw;
}
}
void FTPStreamFactory::setAnonymousPassword(const std::string& password)
{
_anonymousPassword = password;
}
const std::string& FTPStreamFactory::getAnonymousPassword()
{
return _anonymousPassword;
}
void FTPStreamFactory::setPasswordProvider(FTPPasswordProvider* pProvider)
{
_pPasswordProvider = pProvider;
}
FTPPasswordProvider* FTPStreamFactory::getPasswordProvider()
{
return _pPasswordProvider;
}
void FTPStreamFactory::splitUserInfo(const std::string& userInfo, std::string& username, std::string& password)
{
std::string::size_type pos = userInfo.find(':');
if (pos != std::string::npos)
{
username.assign(userInfo, 0, pos++);
password.assign(userInfo, pos, userInfo.size() - pos);
}
else username = userInfo;
}
void FTPStreamFactory::getUserInfo(const URI& uri, std::string& username, std::string& password)
{
splitUserInfo(uri.getUserInfo(), username, password);
if (username.empty())
{
username = "anonymous";
password = _anonymousPassword;
}
else if (password.empty())
{
if (_pPasswordProvider)
password = _pPasswordProvider->password(username, uri.getHost());
else
throw FTPException(std::string("Password required for ") + username + "@" + uri.getHost());
}
}
void FTPStreamFactory::getPathAndType(const Poco::URI& uri, std::string& path, char& type)
{
path = uri.getPath();
type = 'i';
std::string::size_type pos = path.rfind(';');
if (pos != std::string::npos)
{
if (path.length() == pos + 7 && path.compare(pos + 1, 5, "type=") == 0)
{
type = path[pos + 6];
path.resize(pos);
}
}
}
void FTPStreamFactory::registerFactory()
{
URIStreamOpener::defaultOpener().registerStreamFactory("ftp", new FTPStreamFactory);
}
void FTPStreamFactory::unregisterFactory()
{
URIStreamOpener::defaultOpener().unregisterStreamFactory("ftp");
}
} } // namespace Poco::Net
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