1 /* This file is part of Metaproxy.
2 Copyright (C) 2005-2008 Index Data
4 Metaproxy is free software; you can redistribute it and/or modify it under
5 the terms of the GNU General Public License as published by the Free
6 Software Foundation; either version 2, or (at your option) any later
9 Metaproxy is distributed in the hope that it will be useful, but WITHOUT ANY
10 WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
24 #include "package.hpp"
25 #include "thread_pool_observer.hpp"
26 #include "filter_frontend_net.hpp"
27 #include <yazpp/z-assoc.h>
28 #include <yazpp/pdu-assoc.h>
29 #include <yazpp/socket-manager.h>
34 namespace mp = metaproxy_1;
36 namespace metaproxy_1 {
37 class My_Timer_Thread;
40 class FrontendNet::Rep {
41 friend class FrontendNet;
43 std::vector<std::string> m_ports;
44 int m_listen_duration;
45 int m_session_timeout;
46 yazpp_1::SocketManager mySocketManager;
51 class My_Timer_Thread : public yazpp_1::ISocketObserver {
53 yazpp_1::ISocketObservable *m_obs;
57 My_Timer_Thread(yazpp_1::ISocketObservable *obs, int duration);
58 void socketNotify(int event);
61 class ZAssocChild : public yazpp_1::Z_Assoc {
64 ZAssocChild(yazpp_1::IPDU_Observable *the_PDU_Observable,
65 mp::ThreadPoolSocketObserver *m_thread_pool_observer,
66 const mp::Package *package);
69 yazpp_1::IPDU_Observer* sessionNotify(
70 yazpp_1::IPDU_Observable *the_PDU_Observable,
72 void recv_GDU(Z_GDU *apdu, int len);
78 mp::ThreadPoolSocketObserver *m_thread_pool_observer;
79 mp::Session m_session;
82 const mp::Package *m_package;
84 class ThreadPoolPackage : public mp::IThreadPoolMsg {
86 ThreadPoolPackage(mp::Package *package, mp::ZAssocChild *ses) :
87 m_assoc_child(ses), m_package(package) { };
89 IThreadPoolMsg *handle();
93 mp::ZAssocChild *m_assoc_child;
94 mp::Package *m_package;
97 class ZAssocServer : public yazpp_1::Z_Assoc {
100 ZAssocServer(yazpp_1::IPDU_Observable *PDU_Observable, int timeout);
101 void set_package(const mp::Package *package);
102 void set_thread_pool(ThreadPoolSocketObserver *m_thread_pool_observer);
104 yazpp_1::IPDU_Observer* sessionNotify(
105 yazpp_1::IPDU_Observable *the_PDU_Observable,
107 void recv_GDU(Z_GDU *apdu, int len);
110 void timeoutNotify();
111 void connectNotify();
113 mp::ThreadPoolSocketObserver *m_thread_pool_observer;
114 const mp::Package *m_package;
115 int m_session_timeout;
119 mp::ThreadPoolPackage::~ThreadPoolPackage()
124 void mp::ThreadPoolPackage::result()
126 m_assoc_child->m_no_requests--;
128 yazpp_1::GDU *gdu = &m_package->response();
133 m_assoc_child->send_GDU(gdu->get(), &len);
135 else if (!m_package->session().is_closed())
137 // no response package and yet the session is still open..
138 // means that request is unhandled..
139 yazpp_1::GDU *gdu_req = &m_package->request();
140 Z_GDU *z_gdu = gdu_req->get();
141 if (z_gdu && z_gdu->which == Z_GDU_Z3950)
143 // For Z39.50, response with a Close and shutdown
146 Z_APDU *apdu_response = odr.create_close(
147 z_gdu->u.z3950, Z_Close_systemProblem,
148 "unhandled Z39.50 request");
150 m_assoc_child->send_Z_PDU(apdu_response, &len);
152 else if (z_gdu && z_gdu->which == Z_GDU_HTTP_Request)
154 // For HTTP, respond with Server Error
158 = odr.create_HTTP_Response(m_package->session(),
159 z_gdu->u.HTTP_Request, 500);
160 m_assoc_child->send_GDU(zgdu_res, &len);
162 m_package->session().close();
165 if (m_assoc_child->m_no_requests == 0 && m_package->session().is_closed())
167 m_assoc_child->close();
172 mp::IThreadPoolMsg *mp::ThreadPoolPackage::handle()
179 mp::ZAssocChild::ZAssocChild(yazpp_1::IPDU_Observable *PDU_Observable,
180 mp::ThreadPoolSocketObserver *my_thread_pool,
181 const mp::Package *package)
182 : Z_Assoc(PDU_Observable)
184 m_thread_pool_observer = my_thread_pool;
186 m_delete_flag = false;
188 const char *peername = PDU_Observable->getpeername();
190 peername = "unknown";
191 m_origin.set_tcpip_address(std::string(peername), m_session.id());
195 yazpp_1::IPDU_Observer *mp::ZAssocChild::sessionNotify(yazpp_1::IPDU_Observable
196 *the_PDU_Observable, int fd)
201 mp::ZAssocChild::~ZAssocChild()
205 void mp::ZAssocChild::recv_GDU(Z_GDU *z_pdu, int len)
209 mp::Package *p = new mp::Package(m_session, m_origin);
211 mp::ThreadPoolPackage *tp = new mp::ThreadPoolPackage(p, this);
212 p->copy_filter(*m_package);
213 p->request() = yazpp_1::GDU(z_pdu);
214 m_thread_pool_observer->put(tp);
217 void mp::ZAssocChild::failNotify()
219 // TODO: send Package to signal "close"
220 if (m_session.is_closed())
222 if (m_no_requests == 0)
230 mp::Package *p = new mp::Package(m_session, m_origin);
232 mp::ThreadPoolPackage *tp = new mp::ThreadPoolPackage(p, this);
233 p->copy_filter(*m_package);
234 m_thread_pool_observer->put(tp);
237 void mp::ZAssocChild::timeoutNotify()
242 void mp::ZAssocChild::connectNotify()
247 mp::ZAssocServer::ZAssocServer(yazpp_1::IPDU_Observable *PDU_Observable,
249 : Z_Assoc(PDU_Observable), m_session_timeout(timeout)
255 void mp::ZAssocServer::set_package(const mp::Package *package)
260 void mp::ZAssocServer::set_thread_pool(ThreadPoolSocketObserver *observer)
262 m_thread_pool_observer = observer;
265 yazpp_1::IPDU_Observer *mp::ZAssocServer::sessionNotify(yazpp_1::IPDU_Observable
266 *the_PDU_Observable, int fd)
268 mp::ZAssocChild *my =
269 new mp::ZAssocChild(the_PDU_Observable, m_thread_pool_observer,
271 my->timeout(m_session_timeout);
275 mp::ZAssocServer::~ZAssocServer()
279 void mp::ZAssocServer::recv_GDU(Z_GDU *apdu, int len)
283 void mp::ZAssocServer::failNotify()
287 void mp::ZAssocServer::timeoutNotify()
291 void mp::ZAssocServer::connectNotify()
295 mp::filter::FrontendNet::FrontendNet() : m_p(new Rep)
297 m_p->m_no_threads = 5;
298 m_p->m_listen_duration = 0;
299 m_p->m_session_timeout = 300; // 5 minutes
303 mp::filter::FrontendNet::~FrontendNet()
308 for (i = 0; i<m_p->m_ports.size(); i++)
314 bool mp::My_Timer_Thread::timeout()
319 mp::My_Timer_Thread::My_Timer_Thread(yazpp_1::ISocketObservable *obs,
321 m_obs(obs), m_pipe(9123), m_timeout(false)
323 obs->addObserver(m_pipe.read_fd(), this);
324 obs->maskObserver(this, yazpp_1::SOCKET_OBSERVE_READ);
325 obs->timeoutObserver(this, duration);
328 void mp::My_Timer_Thread::socketNotify(int event)
331 m_obs->deleteObserver(this);
334 void mp::filter::FrontendNet::process(Package &package) const
339 My_Timer_Thread *tt = 0;
341 if (m_p->m_listen_duration)
342 tt = new My_Timer_Thread(&m_p->mySocketManager,
343 m_p->m_listen_duration);
345 ThreadPoolSocketObserver tp(&m_p->mySocketManager, m_p->m_no_threads);
347 for (i = 0; i<m_p->m_ports.size(); i++)
349 m_p->az[i]->set_package(&package);
350 m_p->az[i]->set_thread_pool(&tp);
352 while (m_p->mySocketManager.processEvent() > 0)
354 if (tt && tt->timeout())
360 void mp::filter::FrontendNet::configure(const xmlNode * ptr, bool test_only)
362 if (!ptr || !ptr->children)
364 throw mp::filter::FilterException("No ports for Frontend");
366 std::vector<std::string> ports;
367 for (ptr = ptr->children; ptr; ptr = ptr->next)
369 if (ptr->type != XML_ELEMENT_NODE)
371 if (!strcmp((const char *) ptr->name, "port"))
373 std::string port = mp::xml::get_text(ptr);
374 ports.push_back(port);
377 else if (!strcmp((const char *) ptr->name, "threads"))
379 std::string threads_str = mp::xml::get_text(ptr);
380 int threads = atoi(threads_str.c_str());
382 throw mp::filter::FilterException("Bad value for threads: "
384 m_p->m_no_threads = threads;
386 else if (!strcmp((const char *) ptr->name, "timeout"))
388 std::string timeout_str = mp::xml::get_text(ptr);
389 int timeout = atoi(timeout_str.c_str());
391 throw mp::filter::FilterException("Bad value for timeout: "
393 m_p->m_session_timeout = timeout;
397 throw mp::filter::FilterException("Bad element "
398 + std::string((const char *)
407 void mp::filter::FrontendNet::set_ports(std::vector<std::string> &ports)
409 m_p->m_ports = ports;
411 m_p->az = new mp::ZAssocServer *[m_p->m_ports.size()];
413 // Create mp::ZAssocServer for each port
415 for (i = 0; i<m_p->m_ports.size(); i++)
417 // create a PDU assoc object (one per mp::ZAssocServer)
418 yazpp_1::PDU_Assoc *as = new yazpp_1::PDU_Assoc(&m_p->mySocketManager);
420 // create ZAssoc with PDU Assoc
421 m_p->az[i] = new mp::ZAssocServer(as,
422 m_p->m_session_timeout);
423 if (m_p->az[i]->server(m_p->m_ports[i].c_str()))
425 throw mp::filter::FilterException("Unable to bind to address "
426 + std::string(m_p->m_ports[i]));
431 void mp::filter::FrontendNet::set_listen_duration(int d)
433 m_p->m_listen_duration = d;
436 static mp::filter::Base* filter_creator()
438 return new mp::filter::FrontendNet;
442 struct metaproxy_1_filter_struct metaproxy_1_filter_frontend_net = {
452 * indent-tabs-mode: nil
453 * c-file-style: "stroustrup"
455 * vim: shiftwidth=4 tabstop=8 expandtab