Socket/Protocols/INet: Allow socket address string representation to omit the address...
[senf.git] / Socket / Protocols / INet / INetAddressing.cc
index 9ef8c39..6bc79e5 100644 (file)
@@ -1,9 +1,9 @@
 // $Id$
 //
 // Copyright (C) 2006
-// Fraunhofer Institut fuer offene Kommunikationssysteme (FOKUS)
-// Kompetenzzentrum fuer Satelitenkommunikation (SatCom)
-//     Stefan Bund <stefan.bund@fokus.fraunhofer.de>
+// 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
 // it under the terms of the GNU General Public License as published by
@@ -33,8 +33,8 @@
 #include <sys/socket.h>
 #include <net/if.h>
 #include <boost/lexical_cast.hpp>
-#include <boost/tokenizer.hpp>
-#include <boost/range.hpp>
+#include <boost/regex.hpp>
+#include "../../../Utils/senfassert.hh"
 
 //#include "INetAddressing.mpp"
 #define prefix_
 prefix_ senf::INet4SocketAddress::INet4SocketAddress(std::string const & addr)
 {
     clear();
-    unsigned i = addr.find(':');
-    if (i == std::string::npos)
-        throw SyntaxException();
-    address(INet4Address::from_string(std::string(addr,0,i)));
+    unsigned portIx = addr.find(':');
     try {
-        port(boost::lexical_cast< ::u_int16_t >(std::string(addr,i+1)));
+        port( boost::lexical_cast< ::u_int16_t >(portIx == std::string::npos 
+                                                 ? addr : std::string(addr,portIx+1)) );
     }
     catch (boost::bad_lexical_cast const &) {
-        throw SyntaxException();
+        throw AddressSyntaxException() << "invalid port number";
     }
+    if (portIx != std::string::npos)
+        address( INet4Address::from_string(std::string(addr,0,portIx)) );
 }
 
 prefix_ senf::INet4SocketAddress::INet4SocketAddress(INet4Address const & addr, unsigned p)
@@ -74,6 +74,39 @@ prefix_ void senf::INet4SocketAddress::clear()
 ///////////////////////////////////////////////////////////////////////////
 // senf::INet6SocketAddress
 
+prefix_ senf::INet6SocketAddress::INet6SocketAddress(std::string const & addr,
+                                                     INet6Address::Resolve_t resolve)
+{
+    clear();
+
+    // Format of addr: "[" address [ "%" interface ] "]" ":" port
+    //             or: host ":" port
+    //             or: port
+
+    static boost::regex const addressRx ("(?:(?:\\[([a-f0-9A-F:]+)(?:%(.+))?\\]|(.+)):)?([0-9]+)");
+    // Subexpression numbers:
+    enum { NumericAddr = 1,
+           ZoneId      = 2,
+           Hostname    = 3,
+           Port        = 4 };
+    
+    boost::smatch match;
+    if (! regex_match(addr, match, addressRx))
+        throw AddressSyntaxException();
+
+    if (match[ZoneId].matched)
+        assignIface(match[ZoneId]);
+
+    sockaddr_.sin6_port = htons(boost::lexical_cast<boost::uint16_t>(match[Port]));
+
+    if (match[NumericAddr].matched || match[Hostname].matched) {
+        INet6Address a (INet6Address::from_string(
+                            match[NumericAddr].matched ? match[NumericAddr] : match[Hostname],
+                            resolve));
+        std::copy(a.begin(), a.end(), &sockaddr_.sin6_addr.s6_addr[0]);
+    }
+}
+
 prefix_ bool senf::INet6SocketAddress::operator==(INet6SocketAddress const & other)
     const
 {
@@ -82,79 +115,26 @@ prefix_ bool senf::INet6SocketAddress::operator==(INet6SocketAddress const & oth
         sockaddr_.sin6_scope_id == other.sockaddr_.sin6_scope_id;
 }
 
-prefix_ bool senf::INet6SocketAddress::operator!=(INet6SocketAddress const & other)
-    const
-{
-    return ! operator==(other);
-}
-
 prefix_ void senf::INet6SocketAddress::clear()
 {
     ::memset(&sockaddr_,0,sizeof(sockaddr_));
     sockaddr_.sin6_family = AF_INET6;
 }
 
-prefix_ std::string senf::INet6SocketAddress::address()
-    const
-{
-    std::stringstream ss;
-    ss << '[' << host();
-    if (sockaddr_.sin6_scope_id != 0)
-        ss << '@' << iface()
-    << "]:" << port();
-    return ss.str();
-}
-
 prefix_ std::string senf::INet6SocketAddress::iface()
     const
 {
     if (sockaddr_.sin6_scope_id == 0)
         return "";
     char buffer[IFNAMSIZ];
-    BOOST_ASSERT( if_indextoname(sockaddr_.sin6_scope_id,buffer) );
+#ifdef SENF_DEBUG
+    SENF_ASSERT( if_indextoname(sockaddr_.sin6_scope_id,buffer) );
+#else
+    if_indextoname(sockaddr_.sin6_scope_id,buffer);
+#endif
     return std::string(buffer);
 }
 
-prefix_ void senf::INet6SocketAddress::assignAddr(std::string const & addr)
-{
-    // Format of addr: "[" address [ "@" interface ] "]" ":" port
-    typedef boost::char_separator<char> separator;
-    typedef boost::tokenizer<separator> tokenizer;
-    // we don't add ':' to the list of separators since that would give as the IPv6 address
-    // as a list of tokens. We just strip the : from the port number manually
-    separator sep ("", "@[]");
-    tokenizer tokens (addr, sep);
-    tokenizer::iterator token (tokens.begin());
-    if (token == tokens.end()
-        || *token != "["
-        || ++token == tokens.end()
-        || inet_pton(AF_INET6, std::string(boost::begin(*token),boost::end(*token)).c_str(),
-                     &sockaddr_.sin6_addr) <= 0
-        || ++token == tokens.end())
-        throw SyntaxException();
-    if (*token == "@") {
-        if (++token == tokens.end())
-            throw SyntaxException();
-        assignIface(std::string(boost::begin(*token),boost::end(*token)));
-        if (++token == tokens.end()
-            || *token != "]")
-            throw SyntaxException();
-    } else if (*token != "]")
-        throw SyntaxException();
-    if (++token == tokens.end()
-        || *boost::begin(*token) != ':')
-        throw SyntaxException();
-    try {
-        sockaddr_.sin6_port = htons(
-            boost::lexical_cast<unsigned>(std::string(boost::next(boost::begin(*token)),
-                                                      boost::end(*token))));
-    } catch(boost::bad_lexical_cast const &) {
-        throw SyntaxException();
-    }
-    if (++token != tokens.end())
-        throw SyntaxException();
-}
-
 prefix_ void senf::INet6SocketAddress::assignIface(std::string const & iface)
 {
     if (iface.empty())
@@ -162,7 +142,7 @@ prefix_ void senf::INet6SocketAddress::assignIface(std::string const & iface)
     else {
         sockaddr_.sin6_scope_id = if_nametoindex(iface.c_str());
         if (sockaddr_.sin6_scope_id == 0)
-            throw SyntaxException();
+            throw AddressSyntaxException();
     }
 }