-/***************************************************************************
- * Copyright (C) 2006 by Gerd v. Egidy *
- * gve@intra2net.com *
- * *
- * This library is free software; you can redistribute it and/or modify *
- * it under the terms of the GNU Lesser General Public License version *
- * 2.1 as published by the Free Software Foundation. *
- * *
- * This library is distributed in the hope that it will be useful, *
- * but WITHOUT ANY WARRANTY; without even the implied warranty of *
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
- * GNU Lesser General Public License for more details. *
- * *
- * You should have received a copy of the GNU Lesser General Public *
- * License along with this program; if not, write to the *
- * Free Software Foundation, Inc., *
- * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
- ***************************************************************************/
+/*
+Copyright (C) 2006 by Intra2net AG - Gerd v. Egidy
+
+The software in this package is distributed under the GNU General
+Public License version 2 (with a special exception described below).
+
+A copy of GNU General Public License (GPL) is included in this distribution,
+in the file COPYING.GPL.
+
+As a special exception, if other files instantiate templates or use macros
+or inline functions from this file, or you compile this file and link it
+with other works to produce a work based on this file, this file
+does not by itself cause the resulting work to be covered
+by the GNU General Public License.
+
+However the source code for this file must still be made available
+in accordance with section (3) of the GNU General Public License.
+
+This exception does not invalidate any other reasons why a work based
+on this file might be covered by the GNU General Public License.
+*/
#include <string>
#include <sstream>
{
command_server::command_server(server& _s)
- : s(_s)
+ : s(_s), guard_handle(0)
{
// register callback
s.add_callback(new_connection,bind(&command_server::send_hello, boost::ref(*this), _1));
}
+/**
+ * Destructor
+ */
+command_server::~command_server()
+{
+}
+
+/// send a hello message to a new connection
void command_server::send_hello(unsigned int conn_id)
{
server_connection* sc=s.get_connection(conn_id);
- ostringstream hello;
+ if (!sc)
+ return; // connection not existing, so no hello
+
+ std::ostringstream hello;
hello << "T2Nv" << PROTOCOL_VERSION << ';';
OBJLOGSTREAM(s,debug,"handling packet from connection " << conn->get_id());
// deserialize packet
- istringstream ifs(packet);
+ std::istringstream ifs(packet);
boost::archive::binary_iarchive ia(ifs);
command_container ccont;
result_container res;
}
catch(boost::archive::archive_exception &e)
{
- ostringstream msg;
+ std::ostringstream msg;
msg << "archive_exception while deserializing on server-side, "
"code " << e.code << " (" << e.what() << ")";
res.set_exception(new t2n_serialization_error(msg.str()));
xo << BOOST_SERIALIZATION_NVP(ccont);
}
- // TODO: cast to command subclass (template)
- command *cmd=ccont.get_command();
+ command* cmd=cast_command(ccont.get_command());
if (cmd)
{
{ throw; }
}
else
- throw logic_error("uninitialized command called");
+ {
+ std::ostringstream msg;
+ if (ccont.get_command()!=NULL)
+ msg << "illegal command of type " << typeid(ccont.get_command()).name() << " called";
+ else
+ msg << "NULL command called";
+ res.set_exception(new t2n_command_error(msg.str()));
+ }
}
- ostringstream ofs;
+ std::ostringstream ofs;
boost::archive::binary_oarchive oa(ofs);
try
}
catch(boost::archive::archive_exception &e)
{
- ostringstream msg;
+ std::ostringstream msg;
msg << "archive_exception while serializing on server-side, "
"code " << e.code << " (" << e.what() << ")";
res.set_exception(new t2n_serialization_error(msg.str()));
/** @brief handle incoming commands
@param[in,out] usec_timeout wait until new data is found, max timeout usecs.
-1: wait endless, 0: instant return
+ @param[out] usec_timeout_remaining microseconds from the timeout that were not used
*/
void command_server::handle(long long usec_timeout, long long* usec_timeout_remaining)
{
- if (s.fill_buffer(usec_timeout,usec_timeout_remaining))
+ guard_handle++;
+
+ try
{
- string packet;
- unsigned int conn_id;
+ if (s.fill_buffer(usec_timeout,usec_timeout_remaining))
+ {
+ std::string packet;
+ unsigned int conn_id = 0;
- while (s.get_packet(packet,conn_id))
- handle_packet(packet,s.get_connection(conn_id));
+ while (s.get_packet(packet,conn_id))
+ {
+ server_connection* conn=s.get_connection(conn_id);
+ if (!conn)
+ EXCEPTIONSTREAM(error,logic_error,"illegal connection id " << conn_id << " received");
+ try
+ { handle_packet(packet,conn); }
+ catch (t2n_transfer_error &e)
+ {
+ // shut down a connection with transfer errors (usually write errors)
+ conn->close();
+ }
+ catch(...)
+ { throw; }
+ }
+ }
}
- s.cleanup();
+ catch(...)
+ {
+ guard_handle--;
+ throw;
+ }
+ guard_handle--;
+
+ // don't call cleanup on re-entered handle-calls
+ if (guard_handle == 0)
+ s.cleanup();
}
}