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/*************************************************
* Boost.Python module definition *
* (C) 1999-2007 Jack Lloyd *
*************************************************/
#include <boost/python.hpp>
using namespace boost::python;
#include <botan/pipe.h>
#include <botan/lookup.h>
using namespace Botan;
class Py_Filter : public Filter
{
public:
virtual void write_str(const std::string&) = 0;
void write(const byte data[], u32bit length)
{
write_str(std::string((const char*)data, length));
}
void send_str(const std::string& str)
{
printf("Py_Filter::send_str\n");
send((const byte*)str.data(), str.length());
}
};
class FilterWrapper : public Py_Filter, public wrapper<Py_Filter>
{
public:
void start_msg()
{
printf("wrapper start_msg\n");
if(override start_msg = this->get_override("start_msg"))
start_msg();
}
void end_msg()
{
printf("wrapper end_msg\n");
if(override end_msg = this->get_override("end_msg"))
end_msg();
}
void default_start_msg() {}
void default_end_msg() {}
virtual void write_str(const std::string& str)
{
printf("wrapper write\n");
this->get_override("write")(str);
}
};
Filter* return_or_raise(Filter* filter, const std::string& name)
{
if(filter)
return filter;
throw Invalid_Argument("Filter " + name + " could not be found");
}
Filter* make_filter1(const std::string& name)
{
Filter* filter = 0;
if(have_hash(name)) filter = new Hash_Filter(name);
else if(name == "Hex_Encoder") filter = new Hex_Encoder;
else if(name == "Hex_Decoder") filter = new Hex_Decoder;
else if(name == "Base64_Encoder") filter = new Base64_Encoder;
else if(name == "Base64_Decoder") filter = new Base64_Decoder;
return return_or_raise(filter, name);
}
Filter* make_filter2(const std::string& name,
const SymmetricKey& key)
{
Filter* filter = 0;
if(have_mac(name))
filter = new MAC_Filter(name, key);
else if(have_stream_cipher(name))
filter = new StreamCipher_Filter(name, key);
return return_or_raise(filter, name);
}
// FIXME: add new wrapper for Keyed_Filter here
Filter* make_filter3(const std::string& name,
const SymmetricKey& key,
Cipher_Dir direction)
{
return return_or_raise(
get_cipher(name, key, direction),
name);
}
Filter* make_filter4(const std::string& name,
const SymmetricKey& key,
const InitializationVector& iv,
Cipher_Dir direction)
{
return return_or_raise(
get_cipher(name, key, iv, direction),
name);
}
void append_filter(Pipe& pipe, std::auto_ptr<Filter> filter)
{
pipe.append(filter.get());
filter.release();
}
void prepend_filter(Pipe& pipe, std::auto_ptr<Filter> filter)
{
pipe.prepend(filter.get());
filter.release();
}
void do_send(std::auto_ptr<FilterWrapper> filter, const std::string& data)
{
printf("Sending %s to %p\n", data.c_str(), filter.get());
filter->send_str(data);
}
BOOST_PYTHON_MEMBER_FUNCTION_OVERLOADS(rallas_ovls, read_all_as_string, 0, 1)
void export_filters()
{
class_<Filter, std::auto_ptr<Filter>, boost::noncopyable>
("__Internal_FilterObj", no_init);
def("make_filter", make_filter1,
return_value_policy<manage_new_object>());
def("make_filter", make_filter2,
return_value_policy<manage_new_object>());
def("make_filter", make_filter3,
return_value_policy<manage_new_object>());
def("make_filter", make_filter4,
return_value_policy<manage_new_object>());
// This might not work - Pipe will delete the filter, but Python
// might have allocated the space with malloc() or who-knows-what -> bad
class_<FilterWrapper, std::auto_ptr<FilterWrapper>,
bases<Filter>, boost::noncopyable>
("FilterObj")
.def("write", pure_virtual(&Py_Filter::write_str))
.def("send", &do_send)
.def("start_msg", &Filter::start_msg, &FilterWrapper::default_start_msg)
.def("end_msg", &Filter::end_msg, &FilterWrapper::default_end_msg);
implicitly_convertible<std::auto_ptr<FilterWrapper>,
std::auto_ptr<Filter> >();
void (Pipe::*pipe_write_str)(const std::string&) = &Pipe::write;
void (Pipe::*pipe_process_str)(const std::string&) = &Pipe::process_msg;
class_<Pipe, boost::noncopyable>("PipeObj")
.def(init<>())
.def_readonly("LAST_MESSAGE", &Pipe::LAST_MESSAGE)
.def_readonly("DEFAULT_MESSAGE", &Pipe::DEFAULT_MESSAGE)
.add_property("default_msg", &Pipe::default_msg, &Pipe::set_default_msg)
.add_property("msg_count", &Pipe::message_count)
.def("append", append_filter)
.def("prepend", prepend_filter)
.def("reset", &Pipe::reset)
.def("pop", &Pipe::pop)
.def("end_of_data", &Pipe::end_of_data)
.def("start_msg", &Pipe::start_msg)
.def("end_msg", &Pipe::end_msg)
.def("write", pipe_write_str)
.def("process_msg", pipe_process_str)
.def("read_all", &Pipe::read_all_as_string, rallas_ovls());
}
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