2 * Copyright (c) 1998-1999, Index Data.
3 * See the file LICENSE for details.
4 * Sebastian Hammer, Adam Dickmeiss
6 * $Log: yaz-pdu-assoc.cpp,v $
7 * Revision 1.11 2000-09-04 08:29:22 adam
8 * Fixed memory leak(s). Added re-use of associations, rather than
9 * re-init, when maximum number of targets are in use.
11 * Revision 1.10 2000/08/10 08:42:42 adam
12 * Fixes for {set,get}_APDU_log.
14 * Revision 1.9 1999/12/06 13:52:45 adam
15 * Modified for new location of YAZ header files. Experimental threaded
18 * Revision 1.8 1999/04/28 13:04:03 adam
19 * Fixed setting of proxy otherInfo so that database(s) are removed.
21 * Revision 1.7 1999/04/21 12:09:01 adam
22 * Many improvements. Modified to proxy server to work with "sessions"
25 * Revision 1.6 1999/04/20 10:30:05 adam
26 * Implemented various stuff for client and proxy. Updated calls
27 * to ODR to reflect new name parameter.
29 * Revision 1.5 1999/04/09 11:46:57 adam
30 * Added object Yaz_Z_Assoc. Much more functional client.
32 * Revision 1.4 1999/03/23 14:17:57 adam
33 * More work on timeout handling. Work on yaz-client.
35 * Revision 1.3 1999/02/02 14:01:20 adam
36 * First WIN32 port of YAZ++.
38 * Revision 1.2 1999/01/28 13:08:44 adam
39 * Yaz_PDU_Assoc better encapsulated. Memory leak fix in
40 * yaz-socket-manager.cc.
42 * Revision 1.1.1.1 1999/01/28 09:41:07 adam
43 * First implementation of YAZ++.
49 #include <yaz-pdu-assoc.h>
52 #include <yaz/tcpip.h>
54 Yaz_PDU_Assoc::Yaz_PDU_Assoc(IYazSocketObservable *socketObservable)
58 m_socketObservable = socketObservable;
71 IYaz_PDU_Observable *Yaz_PDU_Assoc::clone()
73 Yaz_PDU_Assoc *copy = new Yaz_PDU_Assoc(m_socketObservable);
77 Yaz_PDU_Assoc::~Yaz_PDU_Assoc()
82 void Yaz_PDU_Assoc::socketNotify(int event)
84 logf (m_log, "Yaz_PDU_Assoc::socketNotify p=%p event = %d", this, event);
85 if (0 /* m_state == Connected */)
88 m_socketObservable->maskObserver(this, YAZ_SOCKET_OBSERVE_READ|
89 YAZ_SOCKET_OBSERVE_EXCEPT);
90 m_PDU_Observer->connectNotify();
93 else if (m_state == Connecting)
95 if (event & YAZ_SOCKET_OBSERVE_READ)
98 m_PDU_Observer->failNotify();
100 else if (event & YAZ_SOCKET_OBSERVE_TIMEOUT)
102 m_PDU_Observer->timeoutNotify();
107 m_socketObservable->maskObserver(this, YAZ_SOCKET_OBSERVE_READ|
108 YAZ_SOCKET_OBSERVE_EXCEPT);
109 m_PDU_Observer->connectNotify();
113 else if (m_state == Listen)
115 if (event & YAZ_SOCKET_OBSERVE_READ)
120 if ((res = cs_listen(m_cs, 0, 0)) == 1)
124 logf(LOG_FATAL|LOG_ERRNO, "cs_listen failed");
127 if (!(new_line = cs_accept(m_cs)))
130 /* 1. create socket-manager
132 3. create top-level object
133 setup observer for child fileid in pdu-assoc
136 int fd = cs_fileno(new_line);
137 cs_fileno(new_line) = -1;
138 cs_close (new_line); /* potential problem ... */
142 Yaz_PDU_Assoc *assoc = new Yaz_PDU_Assoc (m_socketObservable);
143 assoc->m_parent = this;
144 assoc->m_next = m_children;
147 assoc->m_PDU_Observer = m_PDU_Observer->clone(assoc);
152 else if (m_state == Ready)
154 if (event & YAZ_SOCKET_OBSERVE_WRITE)
158 if (event & YAZ_SOCKET_OBSERVE_READ)
162 int res = cs_get (m_cs, &m_input_buf, &m_input_len);
167 logf (m_log, "Connection closed by peer");
169 m_PDU_Observer->failNotify();
172 // lock it, so we know if recv_PDU deletes it.
174 m_destroyed = &destroyed;
176 m_PDU_Observer->recv_PDU(m_input_buf, res);
177 if (destroyed) // it really was destroyed, return now.
179 } while (m_cs && cs_more (m_cs));
181 if (event & YAZ_SOCKET_OBSERVE_TIMEOUT)
183 m_PDU_Observer->timeoutNotify();
188 void Yaz_PDU_Assoc::close()
190 m_socketObservable->deleteObserver(this);
194 logf (m_log, "Yaz_PDU_Assoc::close fd=%d", cs_fileno(m_cs));
200 PDU_Queue *q_this = m_queue_out;
201 m_queue_out = m_queue_out->m_next;
209 void Yaz_PDU_Assoc::destroy()
216 // delete from parent's child list (if any)
219 c = &m_parent->m_children;
227 // delete all children ...
231 Yaz_PDU_Assoc *here = *c;
238 Yaz_PDU_Assoc::PDU_Queue::PDU_Queue(const char *buf, int len)
240 m_buf = (char *) malloc (len);
241 memcpy (m_buf, buf, len);
246 Yaz_PDU_Assoc::PDU_Queue::~PDU_Queue()
251 int Yaz_PDU_Assoc::flush_PDU()
255 logf (m_log, "Yaz_PDU_Assoc::flush_PDU");
256 if (m_state != Ready)
258 logf (m_log, "YAZ_PDU_Assoc::flush_PDU, not ready");
261 PDU_Queue *q = m_queue_out;
264 m_socketObservable->maskObserver(this, YAZ_SOCKET_OBSERVE_READ|
265 YAZ_SOCKET_OBSERVE_EXCEPT);
268 r = cs_put (m_cs, q->m_buf, q->m_len);
272 m_PDU_Observer->failNotify();
277 m_socketObservable->maskObserver(this, YAZ_SOCKET_OBSERVE_READ|
278 YAZ_SOCKET_OBSERVE_EXCEPT|
279 YAZ_SOCKET_OBSERVE_WRITE);
280 logf (m_log, "Yaz_PDU_Assoc::flush_PDU put %d bytes (incomplete)",
284 logf (m_log, "Yaz_PDU_Assoc::flush_PDU put %d bytes", q->m_len);
285 // whole packet sent... delete this and proceed to next ...
286 m_queue_out = q->m_next;
288 // don't select on write if queue is empty ...
290 m_socketObservable->maskObserver(this, YAZ_SOCKET_OBSERVE_READ|
291 YAZ_SOCKET_OBSERVE_EXCEPT);
295 int Yaz_PDU_Assoc::send_PDU(const char *buf, int len)
297 logf (m_log, "Yaz_PDU_Assoc::send_PDU");
298 PDU_Queue **pq = &m_queue_out;
299 int is_idle = (*pq ? 0 : 1);
303 logf (m_log, "Yaz_PDU_Assoc::send_PDU failed, m_cs == 0");
308 *pq = new PDU_Queue(buf, len);
312 logf (m_log, "Yaz_PDU_Assoc::cannot send_PDU fd=%d",
317 COMSTACK Yaz_PDU_Assoc::comstack()
321 CS_TYPE cs_type = tcpip_type;
322 m_cs = cs_create (cs_type, 0, PROTO_Z3950);
327 void Yaz_PDU_Assoc::listen(IYaz_PDU_Observer *observer,
332 COMSTACK cs = comstack();
334 logf (m_log, "Yaz_PDU_Assoc::listen %s", addr);
335 m_PDU_Observer = observer;
338 ap = cs_straddr (cs, addr);
341 if (cs_bind(cs, ap, CS_SERVER) < 0)
343 m_socketObservable->addObserver(cs_fileno(cs), this);
344 m_socketObservable->maskObserver(this, YAZ_SOCKET_OBSERVE_READ|
345 YAZ_SOCKET_OBSERVE_EXCEPT);
349 void Yaz_PDU_Assoc::idleTime(int idleTime)
351 m_idleTime = idleTime;
352 logf (m_log, "Yaz_PDU_Assoc::idleTime(%d)", idleTime);
353 m_socketObservable->timeoutObserver(this, m_idleTime);
356 void Yaz_PDU_Assoc::connect(IYaz_PDU_Observer *observer,
359 logf (m_log, "Yaz_PDU_Assoc::connect %s", addr);
361 m_PDU_Observer = observer;
362 COMSTACK cs = comstack();
363 void *ap = cs_straddr (cs, addr);
366 logf (m_log, "cs_straddr failed");
369 int res = cs_connect (cs, ap);
370 logf (m_log, "Yaz_PDU_Assoc::connect fd=%d res=%d", cs_fileno(cs), res);
371 m_socketObservable->addObserver(cs_fileno(cs), this);
372 m_socketObservable->maskObserver(this, YAZ_SOCKET_OBSERVE_READ|
373 YAZ_SOCKET_OBSERVE_EXCEPT|
374 YAZ_SOCKET_OBSERVE_WRITE);
375 m_state = Connecting;
378 void Yaz_PDU_Assoc::socket(IYaz_PDU_Observer *observer, int fd)
381 m_PDU_Observer = observer;
384 CS_TYPE cs_type = tcpip_type;
385 m_cs = cs_createbysocket(fd, cs_type, 0, PROTO_Z3950);
387 m_socketObservable->addObserver(fd, this);
388 m_socketObservable->maskObserver(this,
389 YAZ_SOCKET_OBSERVE_READ|
390 YAZ_SOCKET_OBSERVE_EXCEPT);
391 m_socketObservable->timeoutObserver(this, m_idleTime);
396 void Yaz_PDU_Assoc::childNotify(int fd)
398 /// Clone PDU Observable (keep socket manager)
399 IYaz_PDU_Observable *new_observable = clone();
401 /// Clone PDU Observer
402 IYaz_PDU_Observer *observer = m_PDU_Observer->clone(new_observable);
404 /// Attach new socket to it
405 new_observable->socket(observer, fd);
409 #include <yaz-socket-manager.h>
413 Yaz_SocketManager *socketManager;
414 IYaz_PDU_Observable *
418 static void *events(void *p)
420 Yaz_SocketManager *s = (Yaz_SocketManager *) p;
422 while (s->processEvent() > 0)
427 void Yaz_PDU_Assoc::childNotify(int fd)
429 Yaz_SocketManager *socket_observable = new Yaz_SocketManager;
430 IYaz_PDU_Observable *new_observable = clone();
432 m_socketObservable = socket_observable;
434 /// Clone PDU Observer
435 IYaz_PDU_Observer *observer = m_PDU_Observer->clone(new_observable);
437 /// Attach new socket to it
438 new_observable->socket(observer, fd);
442 int id = pthread_create (&type, 0, events, socket_observable);
443 logf (LOG_LOG, "pthread_create returned id=%d", id);