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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 | #include <stdexcept> | |
28cb45a5 | 23 | #include <iostream> |
7087e187 GE |
24 | |
25 | #include <boost/archive/binary_oarchive.hpp> | |
26 | #include <boost/archive/binary_iarchive.hpp> | |
27 | #include <boost/archive/xml_oarchive.hpp> | |
28 | #include <boost/archive/xml_iarchive.hpp> | |
29 | #include <boost/serialization/serialization.hpp> | |
7087e187 | 30 | |
28cb45a5 GE |
31 | #include <boost/bind.hpp> |
32 | ||
7087e187 GE |
33 | #include "command_server.hxx" |
34 | #include "container.hxx" | |
a7170401 | 35 | #include "log.hxx" |
7087e187 | 36 | |
8104c8f7 GE |
37 | #ifdef HAVE_CONFIG_H |
38 | #include <config.h> | |
39 | #endif | |
40 | ||
7087e187 GE |
41 | using namespace std; |
42 | ||
43 | namespace libt2n | |
44 | { | |
45 | ||
28cb45a5 GE |
46 | command_server::command_server(server& _s) |
47 | : s(_s) | |
48 | { | |
49 | // register callback | |
8104c8f7 | 50 | s.add_callback(new_connection,bind(&command_server::send_hello, boost::ref(*this), _1)); |
28cb45a5 GE |
51 | } |
52 | ||
8104c8f7 | 53 | void command_server::send_hello(unsigned int conn_id) |
28cb45a5 | 54 | { |
8104c8f7 GE |
55 | server_connection* sc=s.get_connection(conn_id); |
56 | ||
57 | ostringstream hello; | |
58 | ||
59 | hello << "T2Nv" << PROTOCOL_VERSION << ';'; | |
60 | ||
61 | int byteordercheck=1; | |
62 | hello.write((char*)&byteordercheck,sizeof(byteordercheck)); | |
63 | ||
64 | hello << ';'; | |
65 | ||
66 | sc->write(hello.str()); | |
28cb45a5 GE |
67 | } |
68 | ||
7087e187 GE |
69 | /// handle a command including deserialization and answering |
70 | void command_server::handle_packet(const std::string& packet, server_connection* conn) | |
71 | { | |
a7170401 GE |
72 | OBJLOGSTREAM(s,debug,"handling packet from connection " << conn->get_id()); |
73 | ||
7087e187 GE |
74 | // deserialize packet |
75 | istringstream ifs(packet); | |
76 | boost::archive::binary_iarchive ia(ifs); | |
77 | command_container ccont; | |
78 | ||
79 | // TODO: catch | |
80 | ia >> ccont; | |
81 | ||
d535333f GE |
82 | std::ostream* ostr; |
83 | if ((ostr=s.get_logstream(fulldebug))!=NULL) | |
84 | { | |
85 | (*ostr) << "decoded packet data: " << std::endl; | |
86 | boost::archive::xml_oarchive xo(*ostr); | |
87 | xo << BOOST_SERIALIZATION_NVP(ccont); | |
88 | } | |
89 | ||
7087e187 GE |
90 | // TODO: cast to command subclass (template) |
91 | command *cmd=ccont.get_command(); | |
92 | ||
93 | result_container res; | |
94 | ||
95 | if (cmd) | |
96 | { | |
97 | try | |
98 | { | |
99 | res.set_result((*cmd)()); | |
100 | } | |
101 | catch (t2n_exception &e) | |
102 | { res.set_exception(e.clone()); } | |
103 | catch (...) | |
104 | { throw; } | |
105 | } | |
106 | else | |
107 | throw logic_error("uninitialized command called"); | |
108 | ||
109 | ostringstream ofs; | |
110 | boost::archive::binary_oarchive oa(ofs); | |
111 | ||
112 | // TODO: catch | |
113 | oa << res; | |
114 | ||
d535333f GE |
115 | if ((ostr=s.get_logstream(fulldebug))!=NULL) |
116 | { | |
117 | (*ostr) << "returning result, decoded data: " << std::endl; | |
118 | boost::archive::xml_oarchive xo(*ostr); | |
119 | xo << BOOST_SERIALIZATION_NVP(res); | |
120 | } | |
121 | ||
7087e187 GE |
122 | conn->write(ofs.str()); |
123 | } | |
124 | ||
125 | /** @brief handle incoming commands | |
45a2ebc9 GE |
126 | @param[in,out] usec_timeout wait until new data is found, max timeout usecs. |
127 | -1: wait endless, 0: instant return | |
7087e187 | 128 | */ |
45a2ebc9 | 129 | void command_server::handle(long long usec_timeout, long long* usec_timeout_remaining) |
7087e187 | 130 | { |
45a2ebc9 | 131 | if (s.fill_buffer(usec_timeout,usec_timeout_remaining)) |
7087e187 GE |
132 | { |
133 | string packet; | |
134 | unsigned int conn_id; | |
135 | ||
136 | while (s.get_packet(packet,conn_id)) | |
137 | handle_packet(packet,s.get_connection(conn_id)); | |
138 | } | |
139 | s.cleanup(); | |
140 | } | |
141 | ||
142 | } |