2 * Copyright (c) 1998-2000, Index Data.
3 * See the file LICENSE for details.
5 * $Log: yaz-pdu-assoc.cpp,v $
6 * Revision 1.18 2000-10-24 12:29:57 adam
7 * Fixed bug in proxy where a Yaz_ProxyClient could be owned by
8 * two Yaz_Proxy's (fatal).
10 * Revision 1.17 2000/10/11 11:58:16 adam
11 * Moved header files to include/yaz++. Switched to libtool and automake.
12 * Configure script creates yaz++-config script.
14 * Revision 1.16 2000/09/22 09:54:11 heikki
17 * Revision 1.15 2000/09/21 21:43:20 adam
18 * Better high-level server API.
20 * Revision 1.14 2000/09/12 12:09:53 adam
21 * More work on high-level server.
23 * Revision 1.13 2000/09/08 10:23:42 adam
24 * Added skeleton of yaz-z-server.
26 * Revision 1.12 2000/09/06 14:23:45 adam
29 * Revision 1.11 2000/09/04 08:29:22 adam
30 * Fixed memory leak(s). Added re-use of associations, rather than
31 * re-init, when maximum number of targets are in use.
33 * Revision 1.10 2000/08/10 08:42:42 adam
34 * Fixes for {set,get}_APDU_log.
36 * Revision 1.9 1999/12/06 13:52:45 adam
37 * Modified for new location of YAZ header files. Experimental threaded
40 * Revision 1.8 1999/04/28 13:04:03 adam
41 * Fixed setting of proxy otherInfo so that database(s) are removed.
43 * Revision 1.7 1999/04/21 12:09:01 adam
44 * Many improvements. Modified to proxy server to work with "sessions"
47 * Revision 1.6 1999/04/20 10:30:05 adam
48 * Implemented various stuff for client and proxy. Updated calls
49 * to ODR to reflect new name parameter.
51 * Revision 1.5 1999/04/09 11:46:57 adam
52 * Added object Yaz_Z_Assoc. Much more functional client.
54 * Revision 1.4 1999/03/23 14:17:57 adam
55 * More work on timeout handling. Work on yaz-client.
57 * Revision 1.3 1999/02/02 14:01:20 adam
58 * First WIN32 port of YAZ++.
60 * Revision 1.2 1999/01/28 13:08:44 adam
61 * Yaz_PDU_Assoc better encapsulated. Memory leak fix in
62 * yaz-socket-manager.cc.
64 * Revision 1.1.1.1 1999/01/28 09:41:07 adam
65 * First implementation of YAZ++.
71 #include <yaz++/yaz-pdu-assoc.h>
74 #include <yaz/tcpip.h>
76 Yaz_PDU_Assoc::Yaz_PDU_Assoc(IYazSocketObservable *socketObservable)
80 m_socketObservable = socketObservable;
93 IYaz_PDU_Observable *Yaz_PDU_Assoc::clone()
95 Yaz_PDU_Assoc *copy = new Yaz_PDU_Assoc(m_socketObservable);
99 void Yaz_PDU_Assoc::socketNotify(int event)
101 logf (m_log, "Yaz_PDU_Assoc::socketNotify p=%p event = %d", this, event);
102 if (0 /* m_state == Connected */)
105 m_socketObservable->maskObserver(this, YAZ_SOCKET_OBSERVE_READ|
106 YAZ_SOCKET_OBSERVE_EXCEPT);
107 m_PDU_Observer->connectNotify();
110 else if (m_state == Connecting)
112 if (event & YAZ_SOCKET_OBSERVE_READ)
115 m_PDU_Observer->failNotify();
117 else if (event & YAZ_SOCKET_OBSERVE_TIMEOUT)
119 m_PDU_Observer->timeoutNotify();
124 m_socketObservable->maskObserver(this, YAZ_SOCKET_OBSERVE_READ|
125 YAZ_SOCKET_OBSERVE_EXCEPT);
126 m_PDU_Observer->connectNotify();
130 else if (m_state == Listen)
132 if (event & YAZ_SOCKET_OBSERVE_READ)
137 if ((res = cs_listen(m_cs, 0, 0)) == 1)
141 logf(LOG_FATAL|LOG_ERRNO, "cs_listen failed");
144 if (!(new_line = cs_accept(m_cs)))
146 /* 1. create socket-manager
148 3. create top-level object
149 setup observer for child fileid in pdu-assoc
152 int fd = cs_fileno(new_line);
153 logf (m_log, "accept ok fd = %d", fd);
154 cs_fileno(new_line) = -1;
159 else if (m_state == Ready)
161 if (event & YAZ_SOCKET_OBSERVE_WRITE)
165 if (event & YAZ_SOCKET_OBSERVE_READ)
169 int res = cs_get (m_cs, &m_input_buf, &m_input_len);
174 logf (m_log, "Connection closed by peer");
176 m_PDU_Observer->failNotify(); // problem here..
179 // lock it, so we know if recv_PDU deletes it.
181 m_destroyed = &destroyed;
183 m_PDU_Observer->recv_PDU(m_input_buf, res);
185 if (destroyed) // it really was destroyed, return now.
187 } while (m_cs && cs_more (m_cs));
189 if (event & YAZ_SOCKET_OBSERVE_TIMEOUT)
191 m_PDU_Observer->timeoutNotify();
196 void Yaz_PDU_Assoc::close()
198 m_socketObservable->deleteObserver(this);
202 logf (m_log, "Yaz_PDU_Assoc::close fd=%d", cs_fileno(m_cs));
208 PDU_Queue *q_this = m_queue_out;
209 m_queue_out = m_queue_out->m_next;
217 void Yaz_PDU_Assoc::destroy()
224 // delete from parent's child list (if any)
227 c = &m_parent->m_children;
235 // delete all children ...
239 Yaz_PDU_Assoc *here = *c;
246 Yaz_PDU_Assoc::PDU_Queue::PDU_Queue(const char *buf, int len)
248 m_buf = (char *) malloc (len);
249 memcpy (m_buf, buf, len);
254 Yaz_PDU_Assoc::PDU_Queue::~PDU_Queue()
259 int Yaz_PDU_Assoc::flush_PDU()
263 logf (m_log, "Yaz_PDU_Assoc::flush_PDU");
264 if (m_state != Ready)
266 logf (m_log, "YAZ_PDU_Assoc::flush_PDU, not ready");
269 PDU_Queue *q = m_queue_out;
272 m_socketObservable->maskObserver(this, YAZ_SOCKET_OBSERVE_READ|
273 YAZ_SOCKET_OBSERVE_EXCEPT);
276 r = cs_put (m_cs, q->m_buf, q->m_len);
280 m_PDU_Observer->failNotify();
285 m_socketObservable->maskObserver(this, YAZ_SOCKET_OBSERVE_READ|
286 YAZ_SOCKET_OBSERVE_EXCEPT|
287 YAZ_SOCKET_OBSERVE_WRITE);
288 logf (m_log, "Yaz_PDU_Assoc::flush_PDU put %d bytes (incomplete)",
292 logf (m_log, "Yaz_PDU_Assoc::flush_PDU put %d bytes", q->m_len);
293 // whole packet sent... delete this and proceed to next ...
294 m_queue_out = q->m_next;
296 // don't select on write if queue is empty ...
298 m_socketObservable->maskObserver(this, YAZ_SOCKET_OBSERVE_READ|
299 YAZ_SOCKET_OBSERVE_EXCEPT);
303 int Yaz_PDU_Assoc::send_PDU(const char *buf, int len)
305 logf (m_log, "Yaz_PDU_Assoc::send_PDU");
306 PDU_Queue **pq = &m_queue_out;
307 int is_idle = (*pq ? 0 : 1);
311 logf (m_log, "Yaz_PDU_Assoc::send_PDU failed, m_cs == 0");
316 *pq = new PDU_Queue(buf, len);
320 logf (m_log, "Yaz_PDU_Assoc::cannot send_PDU fd=%d",
325 COMSTACK Yaz_PDU_Assoc::comstack()
329 CS_TYPE cs_type = tcpip_type;
330 m_cs = cs_create (cs_type, 0, PROTO_Z3950);
335 void Yaz_PDU_Assoc::listen(IYaz_PDU_Observer *observer,
340 COMSTACK cs = comstack();
342 logf (m_log, "Yaz_PDU_Assoc::listen %s", addr);
343 m_PDU_Observer = observer;
346 ap = cs_straddr (cs, addr);
349 if (cs_bind(cs, ap, CS_SERVER) < 0)
351 m_socketObservable->addObserver(cs_fileno(cs), this);
352 m_socketObservable->maskObserver(this, YAZ_SOCKET_OBSERVE_READ|
353 YAZ_SOCKET_OBSERVE_EXCEPT);
354 logf (m_log, "Yaz_PDU_Assoc::listen ok fd=%d", cs_fileno(cs));
358 void Yaz_PDU_Assoc::idleTime(int idleTime)
360 m_idleTime = idleTime;
361 logf (m_log, "Yaz_PDU_Assoc::idleTime(%d)", idleTime);
362 m_socketObservable->timeoutObserver(this, m_idleTime);
365 void Yaz_PDU_Assoc::connect(IYaz_PDU_Observer *observer,
368 logf (m_log, "Yaz_PDU_Assoc::connect %s", addr);
370 m_PDU_Observer = observer;
371 COMSTACK cs = comstack();
372 void *ap = cs_straddr (cs, addr);
375 logf (m_log, "cs_straddr failed");
378 int res = cs_connect (cs, ap);
379 logf (m_log, "Yaz_PDU_Assoc::connect fd=%d res=%d", cs_fileno(cs), res);
380 m_socketObservable->addObserver(cs_fileno(cs), this);
381 m_socketObservable->maskObserver(this, YAZ_SOCKET_OBSERVE_READ|
382 YAZ_SOCKET_OBSERVE_EXCEPT|
383 YAZ_SOCKET_OBSERVE_WRITE);
384 m_state = Connecting;
387 void Yaz_PDU_Assoc::socket(IYaz_PDU_Observer *observer, int fd)
390 m_PDU_Observer = observer;
393 CS_TYPE cs_type = tcpip_type;
394 m_cs = cs_createbysocket(fd, cs_type, 0, PROTO_Z3950);
396 m_socketObservable->addObserver(fd, this);
397 m_socketObservable->maskObserver(this,
398 YAZ_SOCKET_OBSERVE_READ|
399 YAZ_SOCKET_OBSERVE_EXCEPT);
400 m_socketObservable->timeoutObserver(this, m_idleTime);
405 // 1 = single-threaded
406 // 0 = multi-threaded
408 // Single-threaded... Only useful for non-blocking handlers
409 void Yaz_PDU_Assoc::childNotify(int fd)
411 // Clone PDU Observable (keep socket manager)
412 IYaz_PDU_Observable *new_observable = clone();
414 // Clone PDU Observer
415 IYaz_PDU_Observer *observer = m_PDU_Observer->clone(new_observable);
417 // Attach new socket to it
418 new_observable->socket(observer, fd);
422 #include <yaz++/yaz-socket-manager.h>
437 Yaz_SocketManager *s = (Yaz_SocketManager *) p;
439 logf (LOG_LOG, "thread started");
440 while (s->processEvent() > 0)
442 logf (LOG_LOG, "thread finished");
449 void Yaz_PDU_Assoc::childNotify(int fd)
451 Yaz_SocketManager *socket_observable = new Yaz_SocketManager;
452 Yaz_PDU_Assoc *new_observable = new Yaz_PDU_Assoc (socket_observable);
454 /// Clone PDU Observer
455 IYaz_PDU_Observer *observer = m_PDU_Observer->clone(new_observable);
457 /// Attach new socket to it
458 new_observable->socket(observer, fd);
462 t_id = _beginthread (events, 0, socket_observable);
465 logf (LOG_FATAL|LOG_ERRNO, "_beginthread failed");
471 int id = pthread_create (&type, 0, events, socket_observable);
472 logf (LOG_LOG, "pthread_create returned id=%d", id);