// $Id$
//
// Copyright (C) 2007
-// Fraunhofer Institut fuer offene Kommunikationssysteme (FOKUS)
-// Kompetenzzentrum fuer Satelitenkommunikation (SatCom)
-// Thorsten Horstmann <thorsten.horstmann@fokus.fraunhofer.de>
+// Fraunhofer Institute for Open Communication Systems (FOKUS)
+// Competence Center NETwork research (NET), St. Augustin, GERMANY
+// Thorsten Horstmann <tho@berlios.de>
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
#define prefix_
///////////////////////////////cc.p////////////////////////////////////////
-prefix_ senf::Parse_TLVPacketLength::value_type senf::Parse_TLVPacketLength::value() const {
+prefix_ senf::DynamicTLVLengthParser::value_type senf::DynamicTLVLengthParser::value() const
+{
switch (bytes() ) {
case 1:
return fixed_length_field().value();
case 2:
- return parse<Parse_UInt8>( 1 ).value();
+ return parse<UInt8Parser>( 1 ).value();
case 3:
- return parse<Parse_UInt16>( 1 ).value();
+ return parse<UInt16Parser>( 1 ).value();
case 4:
- return parse<Parse_UInt24>( 1 ).value();
+ return parse<UInt24Parser>( 1 ).value();
case 5:
- return parse<Parse_UInt32>( 1 ).value();
+ return parse<UInt32Parser>( 1 ).value();
default:
throw(UnsuportedTLVPacketException());
};
}
-prefix_ void senf::Parse_TLVPacketLength::value(value_type const & v) {
+prefix_ void senf::DynamicTLVLengthParser::value(value_type const & v)
+{
if (v > 4294967295u)
throw(UnsuportedTLVPacketException());
-
+
+ SafePacketParserWrapper<DynamicTLVLengthParser> safeThis (*this);
if (v < 128u) {
- if (bytes() != 1) resize(1);
- fixed_length_field() = v;
+ if (bytes() != 1) {
+ resize(1);
+ safeThis->extended_length_flag() = false;
+ }
+ safeThis->fixed_length_field() = v;
return;
}
if (v < 256u) {
- if (bytes() != 2) resize(2);
- parse<Parse_UInt8>(1) = v;
+ if (bytes() != 2) {
+ resize(2);
+ safeThis->extended_length_flag() = true;
+ safeThis->fixed_length_field() = 1;
+ }
+ safeThis->parse<UInt8Parser>(1) = v;
return;
}
if (v < 65536u) {
- if (bytes() != 3) resize(3);
- parse<Parse_UInt16>(1) = v;
+ if (bytes() != 3) {
+ resize(3);
+ safeThis->extended_length_flag() = true;
+ safeThis->fixed_length_field() = 2;
+ }
+ safeThis->parse<UInt16Parser>(1) = v;
return;
}
if (v < 16777216u) {
- if (bytes() != 4) resize(4);
- parse<Parse_UInt24>(1) = v;
+ if (bytes() != 4) {
+ resize(4);
+ safeThis->extended_length_flag() = true;
+ safeThis->fixed_length_field() = 3;
+ }
+ safeThis->parse<UInt24Parser>(1) = v;
return;
}
if (v <= 4294967295u) {
- if (bytes() != 5) resize(5);
- parse<Parse_UInt32>(1) = v;
+ if (bytes() != 5) {
+ resize(5);
+ safeThis->extended_length_flag() = true;
+ safeThis->fixed_length_field() = 4;
+ }
+ safeThis->parse<UInt32Parser>(1) = v;
return;
}
}
-prefix_ senf::Parse_TLVPacketLength const & senf::Parse_TLVPacketLength::operator= (value_type other) {
+prefix_ senf::DynamicTLVLengthParser const & senf::DynamicTLVLengthParser::operator= (value_type other)
+{
value(other);
return *this;
}
-prefix_ senf::Parse_TLVPacketLength::size_type senf::Parse_TLVPacketLength::bytes() const {
+prefix_ senf::DynamicTLVLengthParser::size_type senf::DynamicTLVLengthParser::bytes() const
+{
if ( extended_length_flag() )
return 1 + fixed_length_field();
else
return 1;
}
-prefix_ void senf::Parse_TLVPacketLength::init() const {
+prefix_ void senf::DynamicTLVLengthParser::init() const
+{
defaultInit();
extended_length_flag() = 0;
}
-prefix_ void senf::Parse_TLVPacketLength::resize(size_type size) {
- std::cout << "senf::Parse_TLVPacketLength::resize: " << unsigned(size) << "\n";
-// hexdump(data().begin(), data().end(), std::cout);
-
+prefix_ void senf::DynamicTLVLengthParser::resize(size_type size)
+{
size_type current_size (bytes());
safe_data_iterator si (data(), i());
if (current_size > size)
data().erase( si, boost::next(si, current_size-size));
- else {
+ else
data().insert( si, size-current_size, 0);
- Parse_TLVPacketLength(si,state()).init();
- }
-
- if (size > 1) {
- extended_length_flag() = 1;
- fixed_length_field() = size-1;
- } else {
- extended_length_flag() = 0;
- }
-
-// hexdump(data().begin(), data().end(), std::cout);
-}
-
-
-prefix_ void senf::TLVPacketType::dump(packet p, std::ostream & os)
-{
- os << "TLVPacket:\n"
- << std::dec
- << " type: " << unsigned(p->type()) << "\n"
- << " length: " << unsigned(p->length()) << "\n";
-}
-
-prefix_ senf::PacketParserBase::size_type senf::TLVPacketType::initSize()
-{
- return 5; // 4 bytes type + 1 byte length
-}
-
-prefix_ void senf::TLVPacketType::init(packet p)
-{
- p->init();
-}
-
-prefix_ void senf::TLVPacketType::finalize(packet p)
-{
- p->length() = p.next().data().size();
-}
-
-prefix_ senf::PacketInterpreterBase::optional_range
-senf::TLVPacketType::nextPacketRange(packet p)
-{
- if (p.data().size() < 5)
- return no_range();
- return range(
- boost::next(p.data().begin(), 4 + senf::bytes(p->length()) ),
- p.data().end() );
}