4 // Fraunhofer Institute for Open Communication Systems (FOKUS)
5 // Competence Center NETwork research (NET), St. Augustin, GERMANY
6 // Stefan Bund <g0dil@berlios.de>
8 // This program is free software; you can redistribute it and/or modify
9 // it under the terms of the GNU General Public License as published by
10 // the Free Software Foundation; either version 2 of the License, or
11 // (at your option) any later version.
13 // This program is distributed in the hope that it will be useful,
14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 // GNU General Public License for more details.
18 // You should have received a copy of the GNU General Public License
19 // along with this program; if not, write to the
20 // Free Software Foundation, Inc.,
21 // 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
24 \brief Server non-inline non-template implementation */
32 #include <boost/algorithm/string/trim.hpp>
33 #include <boost/iostreams/device/file_descriptor.hpp>
34 #include <boost/iostreams/stream.hpp>
35 #include <boost/bind.hpp>
36 #include "../Utils/senfassert.hh"
37 #include "../Utils/membind.hh"
38 #include "../Utils/Logger/SenfLog.hh"
40 //#include "Server.mpp"
42 ///////////////////////////////cc.p////////////////////////////////////////
44 ///////////////////////////////////////////////////////////////////////////
45 // senf::console::detail::NonBlockingSocketSink
47 prefix_ std::streamsize senf::console::detail::NonblockingSocketSink::write(const char * s,
51 if (handle_.writeable())
52 handle_.write(s, s+n);
54 catch (SystemException & ex) {
60 ///////////////////////////////////////////////////////////////////////////
61 // senf::console::Server
63 prefix_ senf::console::Server &
64 senf::console::Server::start(senf::INet4SocketAddress const & address)
66 senf::TCPv4ServerSocketHandle handle (address);
67 Server & server (senf::console::Server::start(handle));
68 SENF_LOG((Server::SENFLogArea)(log::NOTICE)(
69 "Console server started at " << address ));
73 prefix_ senf::console::Server &
74 senf::console::Server::start(senf::INet6SocketAddress const & address)
76 senf::TCPv6ServerSocketHandle handle (address);
77 Server & server (senf::console::Server::start(handle));
78 SENF_LOG((Server::SENFLogArea)(log::NOTICE)(
79 "Console server started at " << address ));
83 prefix_ boost::scoped_ptr<senf::console::Server> & senf::console::Server::instancePtr()
85 // We cannot make 'instance' a global or class-static variable, since it will then be destructed
86 // at an unknown time which may fail if the scheduler or the file-handle pool allocators have
87 // already been destructed.
88 static boost::scoped_ptr<senf::console::Server> instance;
92 prefix_ senf::console::Server & senf::console::Server::start(ServerHandle handle)
94 // Uah .... ensure the scheduler is created before the instance pointer so it get's destructed
96 (void) senf::Scheduler::instance();
97 SENF_ASSERT( ! instancePtr() );
98 instancePtr().reset(new Server(handle));
99 return * instancePtr();
102 prefix_ senf::console::Server::Server(ServerHandle handle)
105 Scheduler::instance().add( handle_, senf::membind(&Server::newClient, this) );
108 prefix_ senf::console::Server::~Server()
110 Scheduler::instance().remove(handle_);
113 prefix_ void senf::console::Server::newClient(Scheduler::EventId event)
115 ServerHandle::ClientSocketHandle client (handle_.accept());
116 boost::intrusive_ptr<Client> p (new Client(*this, client, name_));
117 clients_.insert( p );
118 SENF_LOG(( "Registered new client " << p.get() ));
121 prefix_ void senf::console::Server::removeClient(Client & client)
123 SENF_LOG(( "Disposing client " << & client ));
124 // THIS DELETES THE CLIENT INSTANCE !!
125 clients_.erase(boost::intrusive_ptr<Client>(&client));
128 ///////////////////////////////////////////////////////////////////////////
129 // senf::console::detail::DumbClientReader
131 prefix_ senf::console::detail::DumbClientReader::DumbClientReader(Client & client)
132 : ClientReader(client), promptLen_ (0), promptActive_ (false)
135 ReadHelper<ClientHandle>::dispatch( handle(), 16384u, ReadUntil("\n"),
136 senf::membind(&DumbClientReader::clientData, this) );
140 senf::console::detail::DumbClientReader::clientData(senf::ReadHelper<ClientHandle>::ptr helper)
142 if (helper->error() || handle().eof()) {
143 // THIS COMMITS SUICIDE. THE INSTANCE IS GONE AFTER stopClient RETURNS
149 promptActive_ = false;
151 std::string data (tail_ + helper->data());
152 tail_ = helper->tail();
153 boost::trim(data); // Gets rid of superfluous \r or \n characters
157 ReadHelper<ClientHandle>::dispatch( handle(), 16384u, ReadUntil("\n"),
158 senf::membind(&DumbClientReader::clientData, this) );
162 prefix_ void senf::console::detail::DumbClientReader::showPrompt()
164 std::string prompt (promptString());
166 stream() << prompt << std::flush;
167 promptLen_ = prompt.size();
168 promptActive_ = true;
171 prefix_ void senf::console::detail::DumbClientReader::v_disablePrompt()
173 if (promptActive_ && promptLen_ > 0) {
174 stream() << '\r' << std::string(' ', promptLen_) << '\r';
179 prefix_ void senf::console::detail::DumbClientReader::v_enablePrompt()
181 if (promptActive_ && ! promptLen_)
185 ///////////////////////////////////////////////////////////////////////////
186 // senf::console::Client
188 prefix_ senf::console::Client::Client(Server & server, ClientHandle handle,
189 std::string const & name)
190 : out_t(handle), senf::log::IOStreamTarget(out_t::member), server_ (server),
191 handle_ (handle), name_ (name), reader_ (0)
193 reader_.reset( new detail::DumbClientReader (*this) );
194 route< senf::SenfLog, senf::log::NOTICE >();
197 prefix_ senf::console::Client::~Client()
200 prefix_ void senf::console::Client::stop()
202 // THIS COMMITS SUICIDE. THE INSTANCE IS GONE AFTER removeClient RETURNS
203 server_.removeClient(*this);
206 prefix_ void senf::console::Client::handleInput(std::string data)
214 if (! parser_.parse(data, boost::bind<void>( boost::ref(executor_),
215 boost::ref(stream()),
217 stream() << "syntax error" << std::endl;
219 catch (Executor::ExitException &) {
220 // This generates an EOF condition on the Handle. This EOF condition is expected
221 // to be handled gracefully by the ClientReader. We cannot call stop() here, since we
222 // are called from the client reader callback and that will continue executing even if we
223 // call stop here ...
224 handle_.facet<senf::TCPSocketProtocol>().shutdown(senf::TCPSocketProtocol::ShutRD);
227 catch (std::exception & ex) {
228 stream() << ex.what() << std::endl;
231 stream() << "unidentified error (unknown exception thrown)" << std::endl;
235 prefix_ void senf::console::Client::v_write(boost::posix_time::ptime timestamp,
236 std::string const & stream,
237 std::string const & area, unsigned level,
238 std::string const & message)
240 reader_->disablePrompt();
241 IOStreamTarget::v_write(timestamp, stream, area, level, message);
242 reader_->enablePrompt();
245 ///////////////////////////////cc.e////////////////////////////////////////
247 //#include "Server.mpp"
253 // comment-column: 40
254 // c-file-style: "senf"
255 // indent-tabs-mode: nil
256 // ispell-local-dictionary: "american"
257 // compile-command: "scons -u test"