X-Git-Url: http://g0dil.de/git?a=blobdiff_plain;f=Socket%2FProtocols%2FINet%2FINet4Address.cci;h=5cdc88728a45d9d733220189397221ba98a5298a;hb=a1fdb7bb122f0b05be809a922d4b7ef5e125fa67;hp=0f9e23249376b8b1552fc34146f496a499996d91;hpb=fb08e3defcfb7cd8851ede0fab6cad424d168485;p=senf.git

diff --git a/Socket/Protocols/INet/INet4Address.cci b/Socket/Protocols/INet/INet4Address.cci
index 0f9e232..5cdc887 100644
--- a/Socket/Protocols/INet/INet4Address.cci
+++ b/Socket/Protocols/INet/INet4Address.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
@@ -34,7 +36,7 @@ prefix_ senf::INet4Address::INet4Address()
     std::fill(begin(), end(), 0u);
 }
 
-prefix_ senf::INet4Address::INet4Address(NoInit_t)
+prefix_ senf::INet4Address::INet4Address(senf::NoInit_t)
 {}
 
 prefix_ senf::INet4Address senf::INet4Address::from_inaddr(inaddr_type v)
@@ -42,6 +44,23 @@ prefix_ senf::INet4Address senf::INet4Address::from_inaddr(inaddr_type v)
     return INet4Address(v,IsInAddr);
 }
 
+prefix_ senf::INet4Address::inaddr_type & senf::INet4Address::iref()
+{
+    return *reinterpret_cast<inaddr_type *>(&(*this)[0]);
+}
+
+prefix_ senf::INet4Address::inaddr_type senf::INet4Address::iref()
+    const
+{
+    return *reinterpret_cast<inaddr_type const *>(&(*this)[0]);
+}
+
+prefix_ senf::INet4Address::inaddr_type senf::INet4Address::inaddr()
+    const
+{
+    return iref();
+}
+
 prefix_ senf::INet4Address::INet4Address(inaddr_type addr, InAddr_t)
 {
     iref() = addr;
@@ -59,27 +78,89 @@ prefix_ bool senf::INet4Address::boolean_test()
     return inaddr();
 }
 
-prefix_ senf::INet4Address::inaddr_type senf::INet4Address::inaddr()
+///////////////////////////////////////////////////////////////////////////
+// senf::INet4Network
+
+prefix_ unsigned senf::INet4Network::prefix_len()
     const
 {
-    return iref();
+    return prefix_len_;
 }
 
-prefix_ senf::INet4Address::inaddr_type & senf::INet4Address::iref()
+////////////////////////////////////////
+// private members
+
+prefix_ boost::uint32_t senf::INet4Network::mask()
+    const
 {
-    return *reinterpret_cast<inaddr_type *>(&(*this)[0]);
+    // This is correct as long as the system is using 2-complement arithmetic ...
+    return (~((boost::uint32_t(1u)<<(32u-prefix_len()))-1u)) & 0xFFFFFFFFu;
 }
 
-prefix_ senf::INet4Address::inaddr_type senf::INet4Address::iref()
+////////////////////////////////////////
+// public members
+
+prefix_ senf::INet4Network::INet4Network()
+    : prefix_len_(), address_()
+{}
+
+prefix_ senf::INet4Network::INet4Network(INet4Address const & address, unsigned prefix_len)
+    : prefix_len_(prefix_len), address_(INet4Address(address.address() & mask()))
+{}
+
+prefix_ senf::INet4Address const & senf::INet4Network::address()
     const
 {
-    return *reinterpret_cast<inaddr_type const *>(&(*this)[0]);
+    return address_;
+}
+
+prefix_ bool senf::INet4Network::boolean_test()
+    const
+{
+    return address() || prefix_len();
+}
+
+prefix_ bool senf::INet4Network::operator==(INet4Network const & other)
+    const
+{
+    return address() == other.address() && prefix_len() == other.prefix_len();
+}
+
+prefix_ bool senf::INet4Network::match(INet4Address const & addr)
+    const
+{
+    return (addr.address() & mask()) == address_.address();
+}
+
+prefix_ bool senf::INet4Network::match(INet4Network const & net)
+    const
+{
+    return net.prefix_len() >= prefix_len() && match(net.address());
+}
+
+prefix_ senf::INet4Address senf::INet4Network::host(boost::uint32_t number)
+{
+    return INet4Address(address_.address() | (number & ~mask()));
+}
+
+prefix_ senf::INet4Network senf::INet4Network::subnet(boost::uint32_t net, unsigned prefix_len)
+{
+    return INet4Network(host(net << (32-prefix_len)),prefix_len);
+}
+
+///////////////////////////////////////////////////////////////////////////
+// namespace members
+
+prefix_ std::ostream & senf::operator<<(std::ostream & os, INet4Network const & addr)
+{
+    os << addr.address() << '/' << addr.prefix_len();
+    return os;
 }
 
 ///////////////////////////////cci.e///////////////////////////////////////
 #undef prefix_
 
-
+
 // Local Variables:
 // mode: c++
 // fill-column: 100