developer.intra2net.com Git - libt2n/blob - src/command_client.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2006 by Gerd v. Egidy                                   *
   3  *   gve@intra2net.com                                                     *
   4  *                                                                         *
   5  *   This library is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU Lesser General Public License version   *
   7  *   2.1 as published by the Free Software Foundation.                     *
   8  *                                                                         *
   9  *   This library is distributed in the hope that it will be useful,       *
  10  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  11  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  12  *   GNU Lesser General Public License for more details.                   *
  13  *                                                                         *
  14  *   You should have received a copy of the GNU Lesser General Public      *
  15  *   License along with this program; if not, write to the                 *
  16  *   Free Software Foundation, Inc.,                                       *
  17  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  18  ***************************************************************************/
  19
  20 #include <string>
  21 #include <sstream>
  22
  23 #include <boost/archive/binary_oarchive.hpp>
  24 #include <boost/archive/binary_iarchive.hpp>
  25 #include <boost/archive/xml_oarchive.hpp>
  26 #include <boost/archive/xml_iarchive.hpp>
  27 #include <boost/serialization/serialization.hpp>
  28
  29 #include <boost/bind.hpp>
  30
  31 #include "command_client.hxx"
  32
  33 #ifdef HAVE_CONFIG_H
  34 #include <config.h>
  35 #endif
  36
  37 using namespace std;
  38
  39 namespace libt2n
  40 {
  41
  42 command_client::command_client(client_connection& _c)
  43     : c(_c)
  44 {
  45     // for reconnects
  46     c.add_callback(new_connection,bind(&command_client::read_hello, boost::ref(*this)));
  47
  48     read_hello();
  49 }
  50
  51 void command_client::read_hello()
  52 {
  53     // TODO: fix timeout
  54     string resultpacket;
  55     while(!c.get_packet(resultpacket))
  56         c.fill_buffer();
  57
  58     istringstream hello(resultpacket);
  59
  60     char chk[5];
  61     hello.read(chk,4);
  62     chk[4]=0;
  63     if (hello.fail() || hello.eof() || string("T2Nv") != chk)
  64         throw t2n_version_mismatch("illegal hello received (T2N)");
  65
  66     int prot_version;
  67     hello >> prot_version;
  68     if (hello.fail() || hello.eof() || prot_version != PROTOCOL_VERSION)
  69         throw t2n_version_mismatch("not compatible with the server protocol version");
  70
  71     hello.read(chk,1);
  72     if (hello.fail() || hello.eof() || chk[0] != ';')
  73         throw t2n_version_mismatch("illegal hello received (1. ;)");
  74
  75     hello.read(chk,4);
  76     if (hello.fail() || hello.eof() || *((int*)chk) != 1)
  77         throw t2n_version_mismatch("host byte order not matching");
  78
  79     hello.read(chk,1);
  80     if (hello.fail() || hello.eof() || chk[0] != ';')
  81         throw t2n_version_mismatch("illegal hello received (2. ;)");
  82 }
  83
  84 void command_client::send_command(command* cmd, result_container &res)
  85 {
  86     ostringstream ofs;
  87     command_container cc(cmd);
  88     boost::archive::binary_oarchive oa(ofs);
  89
  90     // TODO: exceptions
  91     oa << cc;
  92
  93     std::ostream* ostr;
  94     if ((ostr=c.get_logstream(fulldebug))!=NULL)
  95     {
  96         (*ostr) << "sending command, decoded data: " << std::endl;
  97         boost::archive::xml_oarchive xo(*ostr);
  98         xo << BOOST_SERIALIZATION_NVP(cc);
  99     }
 100
 101     c.write(ofs.str());
 102
 103     // TODO: fix timeout
 104     string resultpacket;
 105     while(!c.get_packet(resultpacket))
 106         c.fill_buffer();
 107
 108     istringstream ifs(resultpacket);
 109     boost::archive::binary_iarchive ia(ifs);
 110
 111     // TODO: exceptions
 112     ia >> res;
 113
 114     if ((ostr=c.get_logstream(fulldebug))!=NULL)
 115     {
 116         (*ostr) << "received result, decoded data: " << std::endl;
 117         boost::archive::xml_oarchive xo(*ostr);
 118         xo << BOOST_SERIALIZATION_NVP(res);
 119     }
 120 }
 121
 122 }