X-Git-Url: http://g0dil.de/git?a=blobdiff_plain;f=Packets%2FPacketParser.cci;h=510c2a61b2b0a6715be48c34c7f6086989e566d8;hb=c45c112ae88196ea8da9c5a9efb0e167196744d2;hp=173e54e80108ed8e1b1612729770ac3d18354a4b;hpb=f13c1275e48e97dceb7de7925793a4c69a5aeb61;p=senf.git

diff --git a/Packets/PacketParser.cci b/Packets/PacketParser.cci
index 173e54e..510c2a6 100644
--- a/Packets/PacketParser.cci
+++ b/Packets/PacketParser.cci
@@ -1,6 +1,8 @@
-// Copyright (C) 2007 
-// Fraunhofer Institut fuer offene Kommunikationssysteme (FOKUS)
-// Kompetenzzentrum fuer Satelitenkommunikation (SatCom)
+// $Id$
+//
+// Copyright (C) 2007
+// Fraunhofer Institute for Open Communication Systems (FOKUS)
+// Competence Center NETwork research (NET), St. Augustin, GERMANY
 //     Stefan Bund <g0dil@berlios.de>
 //
 // This program is free software; you can redistribute it and/or modify
@@ -31,30 +33,36 @@
 ///////////////////////////////////////////////////////////////////////////
 // senf::PacketParserBase
 
+// public members
+
 prefix_ senf::PacketParserBase::data_iterator senf::PacketParserBase::i()
     const
 {
     return i_;
 }
 
-prefix_ senf::PacketParserBase::state_type senf::PacketParserBase::state()
+// private members
+
+prefix_ senf::PacketParserBase::data_iterator senf::PacketParserBase::end()
     const
 {
-    return data_;
+    return data_->end();
 }
 
-prefix_ senf::PacketData & senf::PacketParserBase::data()
+// protected members
+
+prefix_ bool senf::PacketParserBase::check(size_type size)
     const
 {
-    return * data_;
+    return size <= size_type(std::distance(i(),end()));
 }
 
-prefix_ void senf::PacketParserBase::init()
-    const
-{}
-
-////////////////////////////////////////
-// protected members
+prefix_ void senf::PacketParserBase::validate(size_type size) 
+   const
+{
+    if (! check(size))
+        throw TruncatedPacketException();
+}
 
 prefix_ senf::PacketParserBase::PacketParserBase(data_iterator i, state_type s)
     : i_ (i), data_ (s)
@@ -67,23 +75,42 @@ prefix_ senf::PacketParserBase::PacketParserBase(data_iterator i, state_type s,
     validate(size);
 }
 
-prefix_ bool senf::PacketParserBase::check(size_type size)
+// public members
+
+prefix_ senf::PacketParserBase::data_iterator senf::PacketParserBase::i(size_type offset)
+    const
 {
-    return size <= size_type(std::distance(i(),end()));
+    validate(offset);
+    return boost::next(i_, offset);
 }
 
-prefix_ void senf::PacketParserBase::validate(size_type size)
+prefix_ senf::PacketParserBase::state_type senf::PacketParserBase::state()
+    const
 {
-    if (! check(size))
-        throw TruncatedPacketException();
+    return data_;
 }
 
-////////////////////////////////////////
-// private members
+prefix_ senf::PacketData & senf::PacketParserBase::data()
+    const
+{
+    return * data_;
+}
 
-prefix_ senf::PacketParserBase::data_iterator senf::PacketParserBase::end()
+prefix_ void senf::PacketParserBase::init()
+    const
+{}
+
+prefix_ void senf::PacketParserBase::defaultInit()
+    const
+{}
+
+prefix_ senf::Packet senf::PacketParserBase::packet()
+    const
 {
-    return data_->end();
+    // OUCH ... I hate this but for some awkward packet types, access to the packet
+    // from the parser is really needed (e.g. UDP when building the pseudo-header
+    // for calculating the checksum).
+    return Packet(PacketInterpreterBase::ptr(static_cast<PacketInterpreterBase*>(&data())));
 }
 
 ///////////////////////////////cci.e///////////////////////////////////////