1 /* This file is part of the YAZ toolkit.
2 * Copyright (C) 1995-2008 Index Data
3 * See the file LICENSE for details.
8 * \brief Implements GFS logic
25 #include <sys/types.h>
38 #include <libxml/parser.h>
39 #include <libxml/tree.h>
40 #include <libxml/xinclude.h>
53 #include <yaz/comstack.h>
54 #include <yaz/tcpip.h>
55 #include <yaz/options.h>
57 #include <yaz/xmosi.h>
62 #include <yaz/statserv.h>
64 static IOCHAN pListener = NULL;
66 static char gfs_root_dir[FILENAME_MAX+1];
67 static struct gfs_server *gfs_server_list = 0;
68 static struct gfs_listen *gfs_listen_list = 0;
69 static NMEM gfs_nmem = 0;
71 static char *me = "statserver"; /* log prefix */
72 static char *programname="statserver"; /* full program name */
74 DWORD current_control_tls;
75 static int init_control_tls = 0;
76 #elif YAZ_POSIX_THREADS
77 static pthread_key_t current_control_tls;
78 static int init_control_tls = 0;
80 static statserv_options_block *current_control_block = 0;
86 #define STAT_DEFAULT_LOG_LEVEL "server,session,request"
88 int check_options(int argc, char **argv);
89 statserv_options_block control_block = {
91 0, /* threaded mode */
92 0, /* one shot (single session) */
94 "", /* diagnostic output to stderr */
95 "tcp:@:9999", /* default listener port */
96 PROTO_Z3950, /* default application protocol */
97 15, /* idle timeout (minutes) */
98 1024*1024, /* maximum PDU size (approx.) to allow */
99 "default-config", /* configuration name to pass to backend */
100 "", /* set user id */
101 0, /* bend_start handler */
102 0, /* bend_stop handler */
103 check_options, /* Default routine, for checking the run-time arguments */
106 0, /* default value for inet deamon */
107 0, /* handle (for service, etc) */
108 0, /* bend_init handle */
109 0, /* bend_close handle */
111 "Z39.50 Server", /* NT Service Name */
112 "Server", /* NT application Name */
113 "", /* NT Service Dependencies */
114 "Z39.50 Server", /* NT Service Display Name */
116 0, /* SOAP handlers */
118 0, /* background daemon */
119 "", /* SSL certificate filename */
120 "" /* XML config filename */
123 static int max_sessions = 0;
125 static int logbits_set = 0;
126 static int log_session = 0; /* one-line logs for session */
127 static int log_sessiondetail = 0; /* more detailed stuff */
128 static int log_server = 0;
130 /** get_logbits sets global loglevel bits */
131 static void get_logbits(int force)
132 { /* needs to be called after parsing cmd-line args that can set loglevels!*/
133 if (force || !logbits_set)
136 log_session = yaz_log_module_level("session");
137 log_sessiondetail = yaz_log_module_level("sessiondetail");
138 log_server = yaz_log_module_level("server");
143 static int add_listener(char *where, int listen_id);
146 static xmlDocPtr xml_config_doc = 0;
150 static xmlNodePtr xml_config_get_root(void)
155 ptr = xmlDocGetRootElement(xml_config_doc);
156 if (!ptr || ptr->type != XML_ELEMENT_NODE ||
157 strcmp((const char *) ptr->name, "yazgfs"))
159 yaz_log(YLOG_WARN, "Bad/missing root element for config %s",
160 control_block.xml_config);
170 static char *nmem_dup_xml_content(NMEM n, xmlNodePtr ptr)
174 int len = 1; /* start with 1, because of trailing 0 */
176 int first = 1; /* whitespace lead flag .. */
177 /* determine length */
178 for (p = ptr; p; p = p->next)
180 if (p->type == XML_TEXT_NODE)
181 len += xmlStrlen(p->content);
183 /* now allocate for the string */
184 str = (unsigned char *) nmem_malloc(n, len);
185 *str = '\0'; /* so we can use strcat */
186 for (p = ptr; p; p = p->next)
188 if (p->type == XML_TEXT_NODE)
193 while(*cp && isspace(*cp))
196 first = 0; /* reset if we got non-whitespace out */
198 strcat((char *)str, (const char *)cp); /* append */
201 /* remove trailing whitespace */
202 cp = strlen((const char *)str) + str;
203 while (cp != str && isspace(cp[-1]))
206 /* return resulting string */
211 static struct gfs_server * gfs_server_new(void)
213 struct gfs_server *n = (struct gfs_server *)
214 nmem_malloc(gfs_nmem, sizeof(*n));
215 memcpy(&n->cb, &control_block, sizeof(control_block));
219 n->cql_transform = 0;
220 n->ccl_transform = 0;
221 n->server_node_ptr = 0;
226 n->retrieval = yaz_retrieval_create();
231 static struct gfs_listen * gfs_listen_new(const char *id,
234 struct gfs_listen *n = (struct gfs_listen *)
235 nmem_malloc(gfs_nmem, sizeof(*n));
237 n->id = nmem_strdup(gfs_nmem, id);
241 n->address = nmem_strdup(gfs_nmem, address);
245 static void gfs_server_chdir(struct gfs_server *gfs)
249 if (chdir(gfs_root_dir))
250 yaz_log(YLOG_WARN|YLOG_ERRNO, "chdir %s", gfs_root_dir);
254 if (chdir(gfs->directory))
255 yaz_log(YLOG_WARN|YLOG_ERRNO, "chdir %s",
260 int control_association(association *assoc, const char *host, int force_open)
262 char vhost[128], *cp;
265 strncpy(vhost, host, 127);
267 cp = strchr(vhost, ':');
273 if (control_block.xml_config[0])
275 struct gfs_server *gfs;
276 for (gfs = gfs_server_list; gfs; gfs = gfs->next)
278 int listen_match = 0;
280 if ( !gfs->host || (host && gfs->host && !strcmp(host, gfs->host)))
282 if (!gfs->listen_ref ||
283 gfs->listen_ref == assoc->client_chan->chan_id)
285 if (listen_match && host_match)
288 (assoc->last_control != &gfs->cb && assoc->backend))
290 statserv_setcontrol(assoc->last_control);
291 if (assoc->backend && assoc->init)
293 gfs_server_chdir(gfs);
294 (assoc->last_control->bend_close)(assoc->backend);
301 assoc->last_control = &gfs->cb;
302 statserv_setcontrol(&gfs->cb);
304 gfs_server_chdir(gfs);
310 statserv_setcontrol(0);
311 assoc->last_control = 0;
317 statserv_setcontrol(&control_block);
318 assoc->last_control = &control_block;
320 yaz_log(YLOG_DEBUG, "server select: config=%s",
321 assoc->last_control->configname);
323 assoc->maximumRecordSize = assoc->last_control->maxrecordsize;
324 assoc->preferredMessageSize = assoc->last_control->maxrecordsize;
325 cs_set_max_recv_bytes(assoc->client_link, assoc->maximumRecordSize);
329 static void xml_config_read(void)
331 struct gfs_server **gfsp = &gfs_server_list;
332 struct gfs_listen **gfslp = &gfs_listen_list;
334 xmlNodePtr ptr = xml_config_get_root();
338 for (ptr = ptr->children; ptr; ptr = ptr->next)
340 struct _xmlAttr *attr;
341 if (ptr->type != XML_ELEMENT_NODE)
343 attr = ptr->properties;
344 if (!strcmp((const char *) ptr->name, "listen"))
347 <listen id="listenerid">tcp:@:9999</listen>
350 const char *address =
351 nmem_dup_xml_content(gfs_nmem, ptr->children);
352 for ( ; attr; attr = attr->next)
353 if (!xmlStrcmp(attr->name, BAD_CAST "id")
354 && attr->children && attr->children->type == XML_TEXT_NODE)
355 id = nmem_dup_xml_content(gfs_nmem, attr->children);
358 *gfslp = gfs_listen_new(id, address);
359 gfslp = &(*gfslp)->next;
360 *gfslp = 0; /* make listener list consistent for search */
363 else if (!strcmp((const char *) ptr->name, "server"))
365 xmlNodePtr ptr_server = ptr;
367 const char *listenref = 0;
369 struct gfs_server *gfs;
371 for ( ; attr; attr = attr->next)
372 if (!xmlStrcmp(attr->name, BAD_CAST "listenref")
373 && attr->children && attr->children->type == XML_TEXT_NODE)
374 listenref = nmem_dup_xml_content(gfs_nmem, attr->children);
375 else if (!xmlStrcmp(attr->name, BAD_CAST "id")
377 && attr->children->type == XML_TEXT_NODE)
378 id = nmem_dup_xml_content(gfs_nmem, attr->children);
380 yaz_log(YLOG_WARN, "Unknown attribute '%s' for server",
382 gfs = *gfsp = gfs_server_new();
383 gfs->server_node_ptr = ptr_server;
387 struct gfs_listen *gl = gfs_listen_list;
388 for (id_no = 1; gl; gl = gl->next, id_no++)
389 if (gl->id && !strcmp(gl->id, listenref))
391 gfs->listen_ref = id_no;
395 yaz_log(YLOG_WARN, "Non-existent listenref '%s' in server "
396 "config element", listenref);
398 for (ptr = ptr_server->children; ptr; ptr = ptr->next)
400 if (ptr->type != XML_ELEMENT_NODE)
402 if (!strcmp((const char *) ptr->name, "host"))
404 gfs->host = nmem_dup_xml_content(gfs_nmem,
407 else if (!strcmp((const char *) ptr->name, "config"))
409 strcpy(gfs->cb.configname,
410 nmem_dup_xml_content(gfs_nmem, ptr->children));
412 else if (!strcmp((const char *) ptr->name, "cql2rpn"))
414 gfs->cql_transform = cql_transform_open_fname(
415 nmem_dup_xml_content(gfs_nmem, ptr->children)
418 else if (!strcmp((const char *) ptr->name, "ccl2rpn"))
423 name = nmem_dup_xml_content(gfs_nmem, ptr->children);
424 if ((f = fopen(name, "r")) == 0) {
425 yaz_log(YLOG_FATAL, "can't open CCL file '%s'", name);
428 gfs->ccl_transform = ccl_qual_mk();
429 ccl_qual_file (gfs->ccl_transform, f);
432 else if (!strcmp((const char *) ptr->name, "directory"))
435 nmem_dup_xml_content(gfs_nmem, ptr->children);
437 else if (!strcmp((const char *) ptr->name, "docpath"))
440 nmem_dup_xml_content(gfs_nmem, ptr->children);
442 else if (!strcmp((const char *) ptr->name, "maximumrecordsize"))
444 gfs->cb.maxrecordsize = atoi(
445 nmem_dup_xml_content(gfs_nmem, ptr->children));
447 else if (!strcmp((const char *) ptr->name, "stylesheet"))
449 char *s = nmem_dup_xml_content(gfs_nmem, ptr->children);
450 gfs->stylesheet = (char *)
451 nmem_malloc(gfs_nmem, strlen(s) + 2);
452 sprintf(gfs->stylesheet, "/%s", s);
454 else if (!strcmp((const char *) ptr->name, "explain"))
456 ; /* being processed separately */
458 else if (!strcmp((const char *) ptr->name, "retrievalinfo"))
460 if (yaz_retrieval_configure(gfs->retrieval, ptr))
462 yaz_log(YLOG_FATAL, "%s in config %s",
463 yaz_retrieval_get_error(gfs->retrieval),
464 control_block.xml_config);
470 yaz_log(YLOG_FATAL, "Unknown element '%s' in config %s",
471 ptr->name, control_block.xml_config);
475 gfsp = &(*gfsp)->next;
482 static void xml_config_open(void)
484 if (!getcwd(gfs_root_dir, FILENAME_MAX))
486 yaz_log(YLOG_WARN|YLOG_ERRNO, "getcwd failed");
487 gfs_root_dir[0] = '\0';
490 init_control_tls = 1;
491 current_control_tls = TlsAlloc();
492 #elif YAZ_POSIX_THREADS
493 init_control_tls = 1;
494 pthread_key_create(¤t_control_tls, 0);
497 gfs_nmem = nmem_create();
499 if (control_block.xml_config[0] == '\0')
504 xml_config_doc = xmlParseFile(control_block.xml_config);
507 yaz_log(YLOG_FATAL, "Could not parse %s", control_block.xml_config);
512 int noSubstitutions = xmlXIncludeProcess(xml_config_doc);
513 if (noSubstitutions == -1)
515 yaz_log(YLOG_WARN, "XInclude processing failed for config %s",
516 control_block.xml_config);
525 static void xml_config_close(void)
530 xmlFreeDoc(xml_config_doc);
535 nmem_destroy(gfs_nmem);
537 if (init_control_tls)
538 TlsFree(current_control_tls);
539 #elif YAZ_POSIX_THREADS
540 if (init_control_tls)
541 pthread_key_delete(current_control_tls);
545 static void xml_config_add_listeners(void)
547 struct gfs_listen *gfs = gfs_listen_list;
550 for (id_no = 1; gfs; gfs = gfs->next, id_no++)
553 add_listener(gfs->address, id_no);
557 static void xml_config_bend_start(void)
559 if (control_block.xml_config[0])
561 struct gfs_server *gfs = gfs_server_list;
562 for (; gfs; gfs = gfs->next)
564 yaz_log(YLOG_DEBUG, "xml_config_bend_start config=%s",
566 statserv_setcontrol(&gfs->cb);
567 if (control_block.bend_start)
569 gfs_server_chdir(gfs);
570 (control_block.bend_start)(&gfs->cb);
576 yaz_log(YLOG_DEBUG, "xml_config_bend_start default config");
577 statserv_setcontrol(&control_block);
578 if (control_block.bend_start)
579 (*control_block.bend_start)(&control_block);
583 static void xml_config_bend_stop(void)
585 if (control_block.xml_config[0])
587 struct gfs_server *gfs = gfs_server_list;
588 for (; gfs; gfs = gfs->next)
590 yaz_log(YLOG_DEBUG, "xml_config_bend_stop config=%s",
592 statserv_setcontrol(&gfs->cb);
593 if (control_block.bend_stop)
594 (control_block.bend_stop)(&gfs->cb);
599 yaz_log(YLOG_DEBUG, "xml_config_bend_stop default config");
600 statserv_setcontrol(&control_block);
601 if (control_block.bend_stop)
602 (*control_block.bend_stop)(&control_block);
607 * handle incoming connect requests.
608 * The dynamic mode is a bit tricky mostly because we want to avoid
609 * doing all of the listening and accepting in the parent - it's
614 typedef struct _ThreadList ThreadList;
623 static ThreadList *pFirstThread;
624 static CRITICAL_SECTION Thread_CritSect;
625 static BOOL bInitialized = FALSE;
627 static void ThreadList_Initialize()
629 /* Initialize the critical Sections */
630 InitializeCriticalSection(&Thread_CritSect);
632 /* Set the first thraed */
635 /* we have been initialized */
639 static void statserv_add(HANDLE hThread, IOCHAN pIOChannel)
641 /* Only one thread can go through this section at a time */
642 EnterCriticalSection(&Thread_CritSect);
645 /* Lets create our new object */
646 ThreadList *pNewThread = (ThreadList *)malloc(sizeof(ThreadList));
647 pNewThread->hThread = hThread;
648 pNewThread->pIOChannel = pIOChannel;
649 pNewThread->pNext = pFirstThread;
650 pFirstThread = pNewThread;
652 /* Lets let somebody else create a new object now */
653 LeaveCriticalSection(&Thread_CritSect);
657 void statserv_remove(IOCHAN pIOChannel)
659 /* Only one thread can go through this section at a time */
660 EnterCriticalSection(&Thread_CritSect);
663 ThreadList *pCurrentThread = pFirstThread;
664 ThreadList *pNextThread;
665 ThreadList *pPrevThread =NULL;
667 /* Step through all the threads */
668 for (; pCurrentThread != NULL; pCurrentThread = pNextThread)
670 /* We only need to compare on the IO Channel */
671 if (pCurrentThread->pIOChannel == pIOChannel)
673 /* We have found the thread we want to delete */
674 /* First of all reset the next pointers */
675 if (pPrevThread == NULL)
676 pFirstThread = pCurrentThread->pNext;
678 pPrevThread->pNext = pCurrentThread->pNext;
680 /* All we need todo now is delete the memory */
681 free(pCurrentThread);
683 /* No need to look at any more threads */
688 /* We need to look at another thread */
689 pNextThread = pCurrentThread->pNext;
690 pPrevThread = pCurrentThread;
694 /* Lets let somebody else remove an object now */
695 LeaveCriticalSection(&Thread_CritSect);
699 /* WIN32 statserv_closedown */
700 static void statserv_closedown()
702 /* Shouldn't do anything if we are not initialized */
706 HANDLE *pThreadHandles = NULL;
708 /* We need to stop threads adding and removing while we */
709 /* start the closedown process */
710 EnterCriticalSection(&Thread_CritSect);
713 /* We have exclusive access to the thread stuff now */
714 /* Y didn't i use a semaphore - Oh well never mind */
715 ThreadList *pCurrentThread = pFirstThread;
717 /* Before we do anything else, we need to shutdown the listener */
718 if (pListener != NULL)
719 iochan_destroy(pListener);
721 for (; pCurrentThread != NULL; pCurrentThread = pCurrentThread->pNext)
723 /* Just destroy the IOCHAN, that should do the trick */
724 iochan_destroy(pCurrentThread->pIOChannel);
725 closesocket(pCurrentThread->pIOChannel->fd);
727 /* Keep a running count of our handles */
733 HANDLE *pCurrentHandle ;
735 /* Allocate the thread handle array */
736 pThreadHandles = (HANDLE *)malloc(sizeof(HANDLE) * iHandles);
737 pCurrentHandle = pThreadHandles;
739 for (pCurrentThread = pFirstThread;
740 pCurrentThread != NULL;
741 pCurrentThread = pCurrentThread->pNext, pCurrentHandle++)
743 /* Just the handle */
744 *pCurrentHandle = pCurrentThread->hThread;
748 /* We can now leave the critical section */
749 LeaveCriticalSection(&Thread_CritSect);
752 /* Now we can really do something */
755 yaz_log(log_server, "waiting for %d to die", iHandles);
756 /* This will now wait, until all the threads close */
757 WaitForMultipleObjects(iHandles, pThreadHandles, TRUE, INFINITE);
759 /* Free the memory we allocated for the handle array */
760 free(pThreadHandles);
763 xml_config_bend_stop();
764 /* No longer require the critical section, since all threads are dead */
765 DeleteCriticalSection(&Thread_CritSect);
770 void __cdecl event_loop_thread (IOCHAN iochan)
772 iochan_event_loop (&iochan);
776 static void listener(IOCHAN h, int event)
778 COMSTACK line = (COMSTACK) iochan_getdata(h);
779 IOCHAN parent_chan = line->user;
784 if (event == EVENT_INPUT)
789 if ((res = cs_listen(line, 0, 0)) < 0)
791 yaz_log(YLOG_FATAL|YLOG_ERRNO, "cs_listen failed");
795 return; /* incomplete */
796 yaz_log(YLOG_DEBUG, "listen ok");
797 new_line = cs_accept(line);
800 yaz_log(YLOG_FATAL, "Accept failed.");
803 yaz_log(YLOG_DEBUG, "Accept ok");
805 if (!(new_chan = iochan_create(cs_fileno(new_line), ir_session,
806 EVENT_INPUT, parent_chan->chan_id)))
808 yaz_log(YLOG_FATAL, "Failed to create iochan");
813 yaz_log(YLOG_DEBUG, "Creating association");
814 if (!(newas = create_association(new_chan, new_line,
815 control_block.apdufile)))
817 yaz_log(YLOG_FATAL, "Failed to create new assoc.");
821 newas->cs_get_mask = EVENT_INPUT;
822 newas->cs_put_mask = 0;
823 newas->cs_accept_mask = 0;
825 yaz_log(YLOG_DEBUG, "Setting timeout %d", control_block.idle_timeout);
826 iochan_setdata(new_chan, newas);
827 iochan_settimeout(new_chan, 60);
829 /* Now what we need todo is create a new thread with this iochan as
831 newHandle = (HANDLE) _beginthread(event_loop_thread, 0, new_chan);
832 if (newHandle == (HANDLE) -1)
835 yaz_log(YLOG_FATAL|YLOG_ERRNO, "Failed to create new thread.");
839 /* We successfully created the thread, so add it to the list */
840 statserv_add(newHandle, new_chan);
842 yaz_log(YLOG_DEBUG, "Created new thread, id = %ld iochan %p",(long) newHandle, new_chan);
843 iochan_setflags(h, EVENT_INPUT | EVENT_EXCEPT); /* reset listener */
847 yaz_log(YLOG_FATAL, "Bad event on listener.");
853 int statserv_must_terminate(void)
860 static int term_flag = 0;
861 /* To save having an #ifdef in event_loop we need to
862 define this empty function
864 int statserv_must_terminate(void)
869 void statserv_remove(IOCHAN pIOChannel)
873 static void statserv_closedown(void)
877 xml_config_bend_stop();
878 for (p = pListener; p; p = p->next)
885 void sigterm(int sig)
890 static void *new_session (void *vp);
891 static int no_sessions = 0;
894 static void listener(IOCHAN h, int event)
896 COMSTACK line = (COMSTACK) iochan_getdata(h);
899 if (event == EVENT_INPUT)
902 if ((res = cs_listen_check(line, 0, 0, control_block.check_ip,
903 control_block.daemon_name)) < 0)
905 yaz_log(YLOG_WARN|YLOG_ERRNO, "cs_listen failed");
910 yaz_log(YLOG_WARN, "cs_listen incomplete");
913 new_line = cs_accept(line);
916 yaz_log(YLOG_FATAL, "Accept failed.");
917 iochan_setflags(h, EVENT_INPUT | EVENT_EXCEPT); /* reset listener */
921 yaz_log(log_sessiondetail, "Connect from %s", cs_addrstr(new_line));
924 if (control_block.dynamic)
926 if ((res = fork()) < 0)
928 yaz_log(YLOG_FATAL|YLOG_ERRNO, "fork");
932 else if (res == 0) /* child */
937 for (pp = pListener; pp; pp = iochan_getnext(pp))
939 COMSTACK l = (COMSTACK)iochan_getdata(pp);
943 sprintf(nbuf, "%s(%d)", me, no_sessions);
944 yaz_log_init_prefix(nbuf);
945 /* ensure that bend_stop is not called when each child exits -
946 only for the main process .. */
947 control_block.bend_stop = 0;
956 if (control_block.threads)
958 #if YAZ_POSIX_THREADS
959 pthread_t child_thread;
960 pthread_create (&child_thread, 0, new_session, new_line);
961 pthread_detach (child_thread);
962 #elif YAZ_GNU_THREADS
966 attr = pth_attr_new ();
967 pth_attr_set (attr, PTH_ATTR_JOINABLE, FALSE);
968 pth_attr_set (attr, PTH_ATTR_STACK_SIZE, 32*1024);
969 pth_attr_set (attr, PTH_ATTR_NAME, "session");
970 yaz_log (YLOG_DEBUG, "pth_spawn begin");
971 child_thread = pth_spawn (attr, new_session, new_line);
972 yaz_log (YLOG_DEBUG, "pth_spawn finish");
973 pth_attr_destroy (attr);
975 new_session(new_line);
979 new_session(new_line);
981 else if (event == EVENT_TIMEOUT)
983 yaz_log(log_server, "Shutting down listener.");
988 yaz_log(YLOG_FATAL, "Bad event on listener.");
993 static void *new_session (void *vp)
998 COMSTACK new_line = (COMSTACK) vp;
999 IOCHAN parent_chan = (IOCHAN) new_line->user;
1001 unsigned cs_get_mask, cs_accept_mask, mask =
1002 ((new_line->io_pending & CS_WANT_WRITE) ? EVENT_OUTPUT : 0) |
1003 ((new_line->io_pending & CS_WANT_READ) ? EVENT_INPUT : 0);
1007 cs_accept_mask = mask; /* accept didn't complete */
1012 cs_accept_mask = 0; /* accept completed. */
1013 cs_get_mask = mask = EVENT_INPUT;
1016 if (!(new_chan = iochan_create(cs_fileno(new_line), ir_session, mask,
1017 parent_chan->chan_id)))
1019 yaz_log(YLOG_FATAL, "Failed to create iochan");
1022 if (!(newas = create_association(new_chan, new_line,
1023 control_block.apdufile)))
1025 yaz_log(YLOG_FATAL, "Failed to create new assoc.");
1028 newas->cs_accept_mask = cs_accept_mask;
1029 newas->cs_get_mask = cs_get_mask;
1031 iochan_setdata(new_chan, newas);
1032 iochan_settimeout(new_chan, 60);
1034 a = cs_addrstr(new_line);
1038 yaz_log(log_session, "Session - OK %d %s %ld",
1039 no_sessions, a ? a : "[Unknown]", (long) getpid());
1040 if (max_sessions && no_sessions >= max_sessions)
1041 control_block.one_shot = 1;
1042 if (control_block.threads)
1044 iochan_event_loop(&new_chan);
1048 new_chan->next = pListener;
1049 pListener = new_chan;
1057 static void inetd_connection(int what)
1064 if ((line = cs_createbysocket(0, tcpip_type, 0, what)))
1066 if ((chan = iochan_create(cs_fileno(line), ir_session, EVENT_INPUT,
1069 if ((assoc = create_association(chan, line,
1070 control_block.apdufile)))
1072 iochan_setdata(chan, assoc);
1073 iochan_settimeout(chan, 60);
1074 addr = cs_addrstr(line);
1075 yaz_log(log_sessiondetail, "Inetd association from %s",
1076 addr ? addr : "[UNKNOWN]");
1077 assoc->cs_get_mask = EVENT_INPUT;
1081 yaz_log(YLOG_FATAL, "Failed to create association structure");
1083 chan->next = pListener;
1088 yaz_log(YLOG_FATAL, "Failed to create iochan");
1093 yaz_log(YLOG_ERRNO|YLOG_FATAL, "Failed to create comstack on socket 0");
1098 * Set up a listening endpoint, and give it to the event-handler.
1100 static int add_listener(char *where, int listen_id)
1107 if (control_block.dynamic)
1109 else if (control_block.threads)
1114 yaz_log(log_server, "Adding %s listener on %s id=%d", mode, where,
1117 l = cs_create_host(where, 2, &ap);
1120 yaz_log(YLOG_FATAL, "Failed to listen on %s", where);
1123 if (*control_block.cert_fname)
1124 cs_set_ssl_certificate_file(l, control_block.cert_fname);
1126 if (cs_bind(l, ap, CS_SERVER) < 0)
1128 if (cs_errno(l) == CSYSERR)
1129 yaz_log(YLOG_FATAL|YLOG_ERRNO, "Failed to bind to %s", where);
1131 yaz_log(YLOG_FATAL, "Failed to bind to %s: %s", where,
1136 if (!(lst = iochan_create(cs_fileno(l), listener, EVENT_INPUT |
1137 EVENT_EXCEPT, listen_id)))
1139 yaz_log(YLOG_FATAL|YLOG_ERRNO, "Failed to create IOCHAN-type");
1143 iochan_setdata(lst, l); /* user-defined data for listener is COMSTACK */
1144 l->user = lst; /* user-defined data for COMSTACK is listener chan */
1146 /* Add listener to chain */
1147 lst->next = pListener;
1153 /* UNIX only (for windows we don't need to catch the signals) */
1154 static void catchchld(int num)
1156 while (waitpid(-1, 0, WNOHANG) > 0)
1158 signal(SIGCHLD, catchchld);
1162 statserv_options_block *statserv_getcontrol(void)
1165 if (init_control_tls)
1166 return (statserv_options_block *) TlsGetValue(current_control_tls);
1168 return &control_block;
1169 #elif YAZ_POSIX_THREADS
1170 if (init_control_tls)
1171 return (statserv_options_block *)
1172 pthread_getspecific(current_control_tls);
1174 return &control_block;
1176 if (current_control_block)
1177 return current_control_block;
1178 return &control_block;
1182 void statserv_setcontrol(statserv_options_block *block)
1184 chdir(gfs_root_dir);
1186 if (init_control_tls)
1187 TlsSetValue(current_control_tls, block);
1188 #elif YAZ_POSIX_THREADS
1189 if (init_control_tls)
1190 pthread_setspecific(current_control_tls, block);
1192 current_control_block = block;
1196 static void statserv_reset(void)
1200 static int statserv_sc_main(yaz_sc_t s, int argc, char **argv)
1204 /* We need to initialize the thread list */
1205 ThreadList_Initialize();
1215 if ((me = strrchr (argv[0], sep)))
1216 me++; /* get the basename */
1219 programname = argv[0];
1221 if (control_block.options_func(argc, argv))
1226 xml_config_bend_start();
1229 xml_config_add_listeners();
1231 yaz_log (log_server, "Starting server %s", me);
1232 if (!pListener && *control_block.default_listen)
1233 add_listener(control_block.default_listen, 0);
1236 if (control_block.inetd)
1237 inetd_connection(control_block.default_proto);
1241 if (control_block.background)
1243 /* create pipe so that parent waits until child has created
1247 yaz_log(YLOG_FATAL|YLOG_ERRNO, "pipe");
1261 int res = read(hand[0], dummy, 1);
1262 if (res < 0 && yaz_errno() != EINTR)
1264 yaz_log(YLOG_FATAL|YLOG_ERRNO, "read fork handshake");
1281 open("/dev/null", O_RDWR);
1284 xml_config_add_listeners();
1286 if (!pListener && *control_block.default_listen)
1287 add_listener(control_block.default_listen, 0);
1292 if (*control_block.pid_fname)
1294 FILE *f = fopen(control_block.pid_fname, "w");
1297 yaz_log(YLOG_FATAL|YLOG_ERRNO, "Couldn't create %s",
1298 control_block.pid_fname);
1301 fprintf(f, "%ld", (long) getpid());
1305 if (control_block.background)
1309 yaz_log (log_server, "Starting server %s pid=%ld", programname,
1312 sigset_t sigs_to_block;
1314 sigemptyset(&sigs_to_block);
1315 sigaddset (&sigs_to_block, SIGTERM);
1316 pthread_sigmask (SIG_BLOCK, &sigs_to_block, 0);
1319 if (control_block.dynamic)
1320 signal(SIGCHLD, catchchld);
1322 signal (SIGPIPE, SIG_IGN);
1323 signal (SIGTERM, sigterm);
1324 if (*control_block.setuid)
1328 if (!(pw = getpwnam(control_block.setuid)))
1330 yaz_log(YLOG_FATAL, "%s: Unknown user", control_block.setuid);
1333 if (setuid(pw->pw_uid) < 0)
1335 yaz_log(YLOG_FATAL|YLOG_ERRNO, "setuid");
1341 if (pListener == NULL)
1345 yaz_log(YLOG_DEBUG, "Entering event loop.");
1346 return iochan_event_loop(&pListener);
1349 static void option_copy(char *dst, const char *src)
1351 strncpy(dst, src ? src : "", 127);
1355 int check_options(int argc, char **argv)
1360 yaz_log_init_level(yaz_log_mask_str(STAT_DEFAULT_LOG_LEVEL));
1362 yaz_log_xml_errors(0, YLOG_WARN);
1365 while ((ret = options("1a:iszSTl:v:u:c:w:t:k:d:A:p:DC:f:m:r:",
1366 argv, argc, &arg)) != -2)
1371 if (add_listener(arg, 0))
1372 return 1; /* failed to create listener */
1375 control_block.one_shot = 1;
1376 control_block.dynamic = 0;
1379 control_block.default_proto = PROTO_Z3950;
1382 fprintf (stderr, "%s: SR protocol no longer supported\n", me);
1386 control_block.dynamic = 0;
1389 #if YAZ_POSIX_THREADS
1390 control_block.dynamic = 0;
1391 control_block.threads = 1;
1392 #elif YAZ_GNU_THREADS
1393 control_block.dynamic = 0;
1394 control_block.threads = 1;
1396 fprintf(stderr, "%s: Threaded mode not available.\n", me);
1401 option_copy(control_block.logfile, arg);
1402 yaz_log_init_file(control_block.logfile);
1406 fprintf(stderr, "%s: Specify time format for log file.\n", me);
1409 yaz_log_time_format(arg);
1412 yaz_log_init_level(yaz_log_mask_str(arg));
1416 option_copy(control_block.apdufile, arg);
1419 option_copy(control_block.setuid, arg);
1422 option_copy(control_block.configname, arg);
1425 option_copy(control_block.cert_fname, arg);
1428 option_copy(control_block.daemon_name, arg);
1431 if (!arg || !(r = atoi(arg)))
1433 fprintf(stderr, "%s: Specify positive timeout for -t.\n", me);
1436 control_block.idle_timeout = r;
1439 if (!arg || !(r = atoi(arg)))
1441 fprintf(stderr, "%s: Specify positive size for -k.\n", me);
1444 control_block.maxrecordsize = r * 1024;
1447 control_block.inetd = 1;
1457 max_sessions = atoi(arg);
1460 option_copy(control_block.pid_fname, arg);
1464 option_copy(control_block.xml_config, arg);
1466 fprintf(stderr, "%s: Option -f unsupported since YAZ is compiled without Libxml2 support\n", me);
1471 control_block.background = 1;
1474 if (!arg || !(r = atoi(arg)))
1476 fprintf(stderr, "%s: Specify positive size for -r.\n", me);
1479 yaz_log_init_max_size(r * 1024);
1482 fprintf(stderr, "Usage: %s [ -a <pdufile> -v <loglevel>"
1483 " -l <logfile> -u <user> -c <config> -t <minutes>"
1484 " -k <kilobytes> -d <daemon> -p <pidfile> -C certfile"
1485 " -ziDST1 -m <time-format> -w <directory> <listener-addr>... ]\n", me);
1492 void statserv_sc_stop(yaz_sc_t s)
1494 statserv_closedown();
1498 int statserv_main(int argc, char **argv,
1499 bend_initresult *(*bend_init)(bend_initrequest *r),
1500 void (*bend_close)(void *handle))
1503 struct statserv_options_block *cb = &control_block;
1505 /* control block does not have service_name member on Unix */
1506 yaz_sc_t s = yaz_sc_create(
1508 cb->service_name, cb->service_display_name
1514 cb->bend_init = bend_init;
1515 cb->bend_close = bend_close;
1517 ret = yaz_sc_program(s, argc, argv, statserv_sc_main, statserv_sc_stop);
1525 * indent-tabs-mode: nil
1527 * vim: shiftwidth=4 tabstop=8 expandtab