src/statserv.c

   1 /* This file is part of the YAZ toolkit.
   2  * Copyright (C) 1995-2008 Index Data
   3  * See the file LICENSE for details.
   4  */
   5
   6 /**
   7  * \file statserv.c
   8  * \brief Implements GFS logic
   9  */
  10
  11 #include <stdio.h>
  12 #include <stdlib.h>
  13 #include <string.h>
  14 #include <ctype.h>
  15
  16 #ifdef WIN32
  17 #include <process.h>
  18 #include <winsock.h>
  19 #include <direct.h>
  20 #endif
  21
  22 #include <yaz/sc.h>
  23
  24 #if HAVE_SYS_TYPES_H
  25 #include <sys/types.h>
  26 #endif
  27 #if HAVE_SYS_WAIT_H
  28 #include <sys/wait.h>
  29 #endif
  30 #if HAVE_UNISTD_H
  31 #include <unistd.h>
  32 #endif
  33 #if HAVE_PWD_H
  34 #include <pwd.h>
  35 #endif
  36
  37 #if YAZ_HAVE_XML2
  38 #include <libxml/parser.h>
  39 #include <libxml/tree.h>
  40 #include <libxml/xinclude.h>
  41 #endif
  42
  43 #if YAZ_POSIX_THREADS
  44 #include <pthread.h>
  45 #elif YAZ_GNU_THREADS
  46 #include <pth.h>
  47 #endif
  48
  49 #include <fcntl.h>
  50 #include <signal.h>
  51 #include <errno.h>
  52
  53 #include <yaz/comstack.h>
  54 #include <yaz/tcpip.h>
  55 #include <yaz/options.h>
  56 #ifdef USE_XTIMOSI
  57 #include <yaz/xmosi.h>
  58 #endif
  59 #include <yaz/log.h>
  60 #include "eventl.h"
  61 #include "session.h"
  62 #include <yaz/statserv.h>
  63
  64 static IOCHAN pListener = NULL;
  65
  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;
  70
  71 static char *me = "statserver"; /* log prefix */
  72 static char *programname="statserver"; /* full program name */
  73 #ifdef WIN32
  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;
  79 #else
  80 static statserv_options_block *current_control_block = 0;
  81 #endif
  82
  83 /*
  84  * default behavior.
  85  */
  86 #define STAT_DEFAULT_LOG_LEVEL "server,session,request"
  87
  88 int check_options(int argc, char **argv);
  89 statserv_options_block control_block = {
  90     1,                          /* dynamic mode */
  91     0,                          /* threaded mode */
  92     0,                          /* one shot (single session) */
  93     "",                         /* no PDUs */
  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 */
 104     check_ip_tcpd,
 105     "",
 106     0,                          /* default value for inet deamon */
 107     0,                          /* handle (for service, etc) */
 108     0,                          /* bend_init handle */
 109     0,                          /* bend_close handle */
 110 #ifdef WIN32
 111     "Z39.50 Server",            /* NT Service Name */
 112     "Server",                   /* NT application Name */
 113     "",                         /* NT Service Dependencies */
 114     "Z39.50 Server",            /* NT Service Display Name */
 115 #endif /* WIN32 */
 116     0,                          /* SOAP handlers */
 117     "",                         /* PID fname */
 118     0,                          /* background daemon */
 119     "",                         /* SSL certificate filename */
 120     ""                          /* XML config filename */
 121 };
 122
 123 static int max_sessions = 0;
 124
 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;
 129
 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)
 134     {
 135         logbits_set = 1;
 136         log_session = yaz_log_module_level("session");
 137         log_sessiondetail = yaz_log_module_level("sessiondetail");
 138         log_server = yaz_log_module_level("server");
 139     }
 140 }
 141
 142
 143 static int add_listener(char *where, int listen_id);
 144
 145 #if YAZ_HAVE_XML2
 146 static xmlDocPtr xml_config_doc = 0;
 147 #endif
 148
 149 #if YAZ_HAVE_XML2
 150 static xmlNodePtr xml_config_get_root(void)
 151 {
 152     xmlNodePtr ptr = 0;
 153     if (xml_config_doc)
 154     {
 155         ptr = xmlDocGetRootElement(xml_config_doc);
 156         if (!ptr || ptr->type != XML_ELEMENT_NODE ||
 157             strcmp((const char *) ptr->name, "yazgfs"))
 158         {
 159             yaz_log(YLOG_WARN, "Bad/missing root element for config %s",
 160                     control_block.xml_config);
 161             return 0;
 162
 163         }
 164     }
 165     return ptr;
 166 }
 167 #endif
 168
 169 #if YAZ_HAVE_XML2
 170 static char *nmem_dup_xml_content(NMEM n, xmlNodePtr ptr)
 171 {
 172     unsigned char *cp;
 173     xmlNodePtr p;
 174     int len = 1;  /* start with 1, because of trailing 0 */
 175     unsigned char *str;
 176     int first = 1; /* whitespace lead flag .. */
 177     /* determine length */
 178     for (p = ptr; p; p = p->next)
 179     {
 180         if (p->type == XML_TEXT_NODE)
 181             len += xmlStrlen(p->content);
 182     }
 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)
 187     {
 188         if (p->type == XML_TEXT_NODE)
 189         {
 190             cp = p->content;
 191             if (first)
 192             {
 193                 while(*cp && isspace(*cp))
 194                     cp++;
 195                 if (*cp)
 196                     first = 0;  /* reset if we got non-whitespace out */
 197             }
 198             strcat((char *)str, (const char *)cp); /* append */
 199         }
 200     }
 201     /* remove trailing whitespace */
 202     cp = strlen((const char *)str) + str;
 203     while (cp != str && isspace(cp[-1]))
 204         cp--;
 205     *cp = '\0';
 206     /* return resulting string */
 207     return (char *) str;
 208 }
 209 #endif
 210
 211 #if YAZ_HAVE_XML2
 212 static struct gfs_server * gfs_server_new(void)
 213 {
 214     struct gfs_server *n = (struct gfs_server *)
 215         nmem_malloc(gfs_nmem, sizeof(*n));
 216     memcpy(&n->cb, &control_block, sizeof(control_block));
 217     n->next = 0;
 218     n->host = 0;
 219     n->listen_ref = 0;
 220     n->cql_transform = 0;
 221     n->ccl_transform = 0;
 222     n->server_node_ptr = 0;
 223     n->directory = 0;
 224     n->docpath = 0;
 225     n->stylesheet = 0;
 226     n->retrieval = yaz_retrieval_create();
 227     return n;
 228 }
 229 #endif
 230
 231 #if YAZ_HAVE_XML2
 232 static struct gfs_listen * gfs_listen_new(const char *id,
 233                                           const char *address)
 234 {
 235     struct gfs_listen *n = (struct gfs_listen *)
 236         nmem_malloc(gfs_nmem, sizeof(*n));
 237     if (id)
 238         n->id = nmem_strdup(gfs_nmem, id);
 239     else
 240         n->id = 0;
 241     n->next = 0;
 242     n->address = nmem_strdup(gfs_nmem, address);
 243     return n;
 244 }
 245 #endif
 246
 247 static void gfs_server_chdir(struct gfs_server *gfs)
 248 {
 249     if (gfs_root_dir[0])
 250     {
 251         if (chdir(gfs_root_dir))
 252             yaz_log(YLOG_WARN|YLOG_ERRNO, "chdir %s", gfs_root_dir);
 253     }
 254     if (gfs->directory)
 255     {
 256         if (chdir(gfs->directory))
 257             yaz_log(YLOG_WARN|YLOG_ERRNO, "chdir %s",
 258                     gfs->directory);
 259     }
 260 }
 261
 262 int control_association(association *assoc, const char *host, int force_open)
 263 {
 264     char vhost[128], *cp;
 265     if (host)
 266     {
 267         strncpy(vhost, host, 127);
 268         vhost[127] = '\0';
 269         cp = strchr(vhost, ':');
 270         if (cp)
 271             *cp = '\0';
 272         host = vhost;
 273     }
 274     assoc->server = 0;
 275     if (control_block.xml_config[0])
 276     {
 277         struct gfs_server *gfs;
 278         for (gfs = gfs_server_list; gfs; gfs = gfs->next)
 279         {
 280             int listen_match = 0;
 281             int host_match = 0;
 282             if ( !gfs->host || (host && gfs->host && !strcmp(host, gfs->host)))
 283                 host_match = 1;
 284             if (!gfs->listen_ref ||
 285                 gfs->listen_ref == assoc->client_chan->chan_id)
 286                 listen_match = 1;
 287             if (listen_match && host_match)
 288             {
 289                 if (force_open ||
 290                     (assoc->last_control != &gfs->cb && assoc->backend))
 291                 {
 292                     statserv_setcontrol(assoc->last_control);
 293                     if (assoc->backend && assoc->init)
 294                     {
 295                         gfs_server_chdir(gfs);
 296                         (assoc->last_control->bend_close)(assoc->backend);
 297                     }
 298                     assoc->backend = 0;
 299                     xfree(assoc->init);
 300                     assoc->init = 0;
 301                 }
 302                 assoc->server = gfs;
 303                 assoc->last_control = &gfs->cb;
 304                 statserv_setcontrol(&gfs->cb);
 305
 306                 gfs_server_chdir(gfs);
 307                 break;
 308             }
 309         }
 310         if (!gfs)
 311         {
 312             statserv_setcontrol(0);
 313             assoc->last_control = 0;
 314             return 0;
 315         }
 316     }
 317     else
 318     {
 319         statserv_setcontrol(&control_block);
 320         assoc->last_control = &control_block;
 321     }
 322     yaz_log(YLOG_DEBUG, "server select: config=%s",
 323             assoc->last_control->configname);
 324
 325     assoc->maximumRecordSize = assoc->last_control->maxrecordsize;
 326     assoc->preferredMessageSize = assoc->last_control->maxrecordsize;
 327     cs_set_max_recv_bytes(assoc->client_link, assoc->maximumRecordSize);
 328     return 1;
 329 }
 330
 331 #if YAZ_HAVE_XML2
 332 static void xml_config_read(void)
 333 {
 334     struct gfs_server **gfsp = &gfs_server_list;
 335     struct gfs_listen **gfslp = &gfs_listen_list;
 336     xmlNodePtr ptr = xml_config_get_root();
 337
 338     if (!ptr)
 339         return;
 340     for (ptr = ptr->children; ptr; ptr = ptr->next)
 341     {
 342         struct _xmlAttr *attr;
 343         if (ptr->type != XML_ELEMENT_NODE)
 344             continue;
 345         attr = ptr->properties;
 346         if (!strcmp((const char *) ptr->name, "listen"))
 347         {
 348             /*
 349               <listen id="listenerid">tcp:@:9999</listen>
 350             */
 351             const char *id = 0;
 352             const char *address =
 353                 nmem_dup_xml_content(gfs_nmem, ptr->children);
 354             for ( ; attr; attr = attr->next)
 355                 if (!xmlStrcmp(attr->name, BAD_CAST "id")
 356                     && attr->children && attr->children->type == XML_TEXT_NODE)
 357                     id = nmem_dup_xml_content(gfs_nmem, attr->children);
 358             if (address)
 359             {
 360                 *gfslp = gfs_listen_new(id, address);
 361                 gfslp = &(*gfslp)->next;
 362                 *gfslp = 0; /* make listener list consistent for search */
 363             }
 364         }
 365         else if (!strcmp((const char *) ptr->name, "server"))
 366         {
 367             xmlNodePtr ptr_server = ptr;
 368             xmlNodePtr ptr;
 369             const char *listenref = 0;
 370             const char *id = 0;
 371             struct gfs_server *gfs;
 372
 373             for ( ; attr; attr = attr->next)
 374                 if (!xmlStrcmp(attr->name, BAD_CAST "listenref")
 375                     && attr->children && attr->children->type == XML_TEXT_NODE)
 376                     listenref = nmem_dup_xml_content(gfs_nmem, attr->children);
 377                 else if (!xmlStrcmp(attr->name, BAD_CAST "id")
 378                          && attr->children
 379                          && attr->children->type == XML_TEXT_NODE)
 380                     id = nmem_dup_xml_content(gfs_nmem, attr->children);
 381                 else
 382                     yaz_log(YLOG_WARN, "Unknown attribute '%s' for server",
 383                             attr->name);
 384             gfs = *gfsp = gfs_server_new();
 385             gfs->server_node_ptr = ptr_server;
 386             if (listenref)
 387             {
 388                 int id_no;
 389                 struct gfs_listen *gl = gfs_listen_list;
 390                 for (id_no = 1; gl; gl = gl->next, id_no++)
 391                     if (gl->id && !strcmp(gl->id, listenref))
 392                     {
 393                         gfs->listen_ref = id_no;
 394                         break;
 395                     }
 396                 if (!gl)
 397                     yaz_log(YLOG_WARN, "Non-existent listenref '%s' in server "
 398                             "config element", listenref);
 399             }
 400             for (ptr = ptr_server->children; ptr; ptr = ptr->next)
 401             {
 402                 if (ptr->type != XML_ELEMENT_NODE)
 403                     continue;
 404                 if (!strcmp((const char *) ptr->name, "host"))
 405                 {
 406                     gfs->host = nmem_dup_xml_content(gfs_nmem,
 407                                                      ptr->children);
 408                 }
 409                 else if (!strcmp((const char *) ptr->name, "config"))
 410                 {
 411                     strcpy(gfs->cb.configname,
 412                            nmem_dup_xml_content(gfs_nmem, ptr->children));
 413                 }
 414                 else if (!strcmp((const char *) ptr->name, "cql2rpn"))
 415                 {
 416                     gfs->cql_transform = cql_transform_open_fname(
 417                         nmem_dup_xml_content(gfs_nmem, ptr->children)
 418                         );
 419                 }
 420                 else if (!strcmp((const char *) ptr->name, "ccl2rpn"))
 421                 {
 422                     char *name;
 423                     FILE *f;
 424
 425                     name = nmem_dup_xml_content(gfs_nmem, ptr->children);
 426                     if ((f = fopen(name, "r")) == 0) {
 427                         yaz_log(YLOG_FATAL, "can't open CCL file '%s'", name);
 428                         exit(1);
 429                     }
 430                     gfs->ccl_transform = ccl_qual_mk();
 431                     ccl_qual_file (gfs->ccl_transform, f);
 432                     fclose(f);
 433                 }
 434                 else if (!strcmp((const char *) ptr->name, "directory"))
 435                 {
 436                     gfs->directory =
 437                         nmem_dup_xml_content(gfs_nmem, ptr->children);
 438                 }
 439                 else if (!strcmp((const char *) ptr->name, "docpath"))
 440                 {
 441                     gfs->docpath =
 442                         nmem_dup_xml_content(gfs_nmem, ptr->children);
 443                 }
 444                 else if (!strcmp((const char *) ptr->name, "maximumrecordsize"))
 445                 {
 446                     gfs->cb.maxrecordsize = atoi(
 447                         nmem_dup_xml_content(gfs_nmem, ptr->children));
 448                 }
 449                 else if (!strcmp((const char *) ptr->name, "stylesheet"))
 450                 {
 451                     char *s = nmem_dup_xml_content(gfs_nmem, ptr->children);
 452                     gfs->stylesheet = (char *)
 453                         nmem_malloc(gfs_nmem, strlen(s) + 2);
 454                     sprintf(gfs->stylesheet, "/%s", s);
 455                 }
 456                 else if (!strcmp((const char *) ptr->name, "explain"))
 457                 {
 458                     ; /* being processed separately */
 459                 }
 460                 else if (!strcmp((const char *) ptr->name, "retrievalinfo"))
 461                 {
 462                     if (yaz_retrieval_configure(gfs->retrieval, ptr))
 463                     {
 464                         yaz_log(YLOG_FATAL, "%s in config %s",
 465                                 yaz_retrieval_get_error(gfs->retrieval),
 466                                 control_block.xml_config);
 467                         exit(1);
 468                     }
 469                 }
 470                 else
 471                 {
 472                     yaz_log(YLOG_FATAL, "Unknown element '%s' in config %s",
 473                             ptr->name, control_block.xml_config);
 474                     exit(1);
 475                 }
 476             }
 477             gfsp = &(*gfsp)->next;
 478         }
 479     }
 480     *gfsp = 0;
 481 }
 482 #endif
 483
 484 static void xml_config_open(void)
 485 {
 486     if (!getcwd(gfs_root_dir, FILENAME_MAX))
 487     {
 488         yaz_log(YLOG_WARN|YLOG_ERRNO, "getcwd failed");
 489         gfs_root_dir[0] = '\0';
 490     }
 491 #ifdef WIN32
 492     init_control_tls = 1;
 493     current_control_tls = TlsAlloc();
 494 #elif YAZ_POSIX_THREADS
 495     init_control_tls = 1;
 496     pthread_key_create(&current_control_tls, 0);
 497 #endif
 498
 499     gfs_nmem = nmem_create();
 500 #if YAZ_HAVE_XML2
 501     if (control_block.xml_config[0] == '\0')
 502         return;
 503
 504     if (!xml_config_doc)
 505     {
 506         xml_config_doc = xmlParseFile(control_block.xml_config);
 507         if (!xml_config_doc)
 508         {
 509             yaz_log(YLOG_FATAL, "Could not parse %s", control_block.xml_config);
 510             exit(1);
 511         }
 512         else
 513         {
 514             int noSubstitutions = xmlXIncludeProcess(xml_config_doc);
 515             if (noSubstitutions == -1)
 516             {
 517                 yaz_log(YLOG_WARN, "XInclude processing failed for config %s",
 518                         control_block.xml_config);
 519                 exit(1);
 520             }
 521         }
 522     }
 523     xml_config_read();
 524 #endif
 525 }
 526
 527 static void xml_config_close(void)
 528 {
 529 #if YAZ_HAVE_XML2
 530     if (xml_config_doc)
 531     {
 532         xmlFreeDoc(xml_config_doc);
 533         xml_config_doc = 0;
 534     }
 535 #endif
 536     gfs_server_list = 0;
 537     nmem_destroy(gfs_nmem);
 538 #ifdef WIN32
 539     if (init_control_tls)
 540         TlsFree(current_control_tls);
 541 #elif YAZ_POSIX_THREADS
 542     if (init_control_tls)
 543         pthread_key_delete(current_control_tls);
 544 #endif
 545 }
 546
 547 static void xml_config_add_listeners(void)
 548 {
 549     struct gfs_listen *gfs = gfs_listen_list;
 550     int id_no;
 551
 552     for (id_no = 1; gfs; gfs = gfs->next, id_no++)
 553     {
 554         if (gfs->address)
 555             add_listener(gfs->address, id_no);
 556     }
 557 }
 558
 559 static void xml_config_bend_start(void)
 560 {
 561     if (control_block.xml_config[0])
 562     {
 563         struct gfs_server *gfs = gfs_server_list;
 564         for (; gfs; gfs = gfs->next)
 565         {
 566             yaz_log(YLOG_DEBUG, "xml_config_bend_start config=%s",
 567                     gfs->cb.configname);
 568             statserv_setcontrol(&gfs->cb);
 569             if (control_block.bend_start)
 570             {
 571                 gfs_server_chdir(gfs);
 572                 (control_block.bend_start)(&gfs->cb);
 573             }
 574         }
 575     }
 576     else
 577     {
 578         yaz_log(YLOG_DEBUG, "xml_config_bend_start default config");
 579         statserv_setcontrol(&control_block);
 580         if (control_block.bend_start)
 581             (*control_block.bend_start)(&control_block);
 582     }
 583 }
 584
 585 static void xml_config_bend_stop(void)
 586 {
 587     if (control_block.xml_config[0])
 588     {
 589         struct gfs_server *gfs = gfs_server_list;
 590         for (; gfs; gfs = gfs->next)
 591         {
 592             yaz_log(YLOG_DEBUG, "xml_config_bend_stop config=%s",
 593                     gfs->cb.configname);
 594             statserv_setcontrol(&gfs->cb);
 595             if (control_block.bend_stop)
 596                 (control_block.bend_stop)(&gfs->cb);
 597         }
 598     }
 599     else
 600     {
 601         yaz_log(YLOG_DEBUG, "xml_config_bend_stop default config");
 602         statserv_setcontrol(&control_block);
 603         if (control_block.bend_stop)
 604             (*control_block.bend_stop)(&control_block);
 605     }
 606 }
 607
 608 /*
 609  * handle incoming connect requests.
 610  * The dynamic mode is a bit tricky mostly because we want to avoid
 611  * doing all of the listening and accepting in the parent - it's
 612  * safer that way.
 613  */
 614 #ifdef WIN32
 615
 616 typedef struct _ThreadList ThreadList;
 617
 618 struct _ThreadList
 619 {
 620     HANDLE hThread;
 621     IOCHAN pIOChannel;
 622     ThreadList *pNext;
 623 };
 624
 625 static ThreadList *pFirstThread;
 626 static CRITICAL_SECTION Thread_CritSect;
 627 static BOOL bInitialized = FALSE;
 628
 629 static void ThreadList_Initialize()
 630 {
 631     /* Initialize the critical Sections */
 632     InitializeCriticalSection(&Thread_CritSect);
 633
 634     /* Set the first thraed */
 635     pFirstThread = NULL;
 636
 637     /* we have been initialized */
 638     bInitialized = TRUE;
 639 }
 640
 641 static void statserv_add(HANDLE hThread, IOCHAN pIOChannel)
 642 {
 643     /* Only one thread can go through this section at a time */
 644     EnterCriticalSection(&Thread_CritSect);
 645
 646     {
 647         /* Lets create our new object */
 648         ThreadList *pNewThread = (ThreadList *)malloc(sizeof(ThreadList));
 649         pNewThread->hThread = hThread;
 650         pNewThread->pIOChannel = pIOChannel;
 651         pNewThread->pNext = pFirstThread;
 652         pFirstThread = pNewThread;
 653
 654         /* Lets let somebody else create a new object now */
 655         LeaveCriticalSection(&Thread_CritSect);
 656     }
 657 }
 658
 659 void statserv_remove(IOCHAN pIOChannel)
 660 {
 661     /* Only one thread can go through this section at a time */
 662     EnterCriticalSection(&Thread_CritSect);
 663
 664     {
 665         ThreadList *pCurrentThread = pFirstThread;
 666         ThreadList *pNextThread;
 667         ThreadList *pPrevThread =NULL;
 668
 669         /* Step through all the threads */
 670         for (; pCurrentThread != NULL; pCurrentThread = pNextThread)
 671         {
 672             /* We only need to compare on the IO Channel */
 673             if (pCurrentThread->pIOChannel == pIOChannel)
 674             {
 675                 /* We have found the thread we want to delete */
 676                 /* First of all reset the next pointers */
 677                 if (pPrevThread == NULL)
 678                     pFirstThread = pCurrentThread->pNext;
 679                 else
 680                     pPrevThread->pNext = pCurrentThread->pNext;
 681
 682                 /* All we need todo now is delete the memory */
 683                 free(pCurrentThread);
 684
 685                 /* No need to look at any more threads */
 686                 pNextThread = NULL;
 687             }
 688             else
 689             {
 690                 /* We need to look at another thread */
 691                 pNextThread = pCurrentThread->pNext;
 692                 pPrevThread = pCurrentThread;
 693             }
 694         }
 695
 696         /* Lets let somebody else remove an object now */
 697         LeaveCriticalSection(&Thread_CritSect);
 698     }
 699 }
 700
 701 /* WIN32 statserv_closedown */
 702 static void statserv_closedown()
 703 {
 704     /* Shouldn't do anything if we are not initialized */
 705     if (bInitialized)
 706     {
 707         int iHandles = 0;
 708         HANDLE *pThreadHandles = NULL;
 709
 710         /* We need to stop threads adding and removing while we */
 711         /* start the closedown process */
 712         EnterCriticalSection(&Thread_CritSect);
 713
 714         {
 715             /* We have exclusive access to the thread stuff now */
 716             /* Y didn't i use a semaphore - Oh well never mind */
 717             ThreadList *pCurrentThread = pFirstThread;
 718
 719             /* Before we do anything else, we need to shutdown the listener */
 720             if (pListener != NULL)
 721                 iochan_destroy(pListener);
 722
 723             for (; pCurrentThread != NULL; pCurrentThread = pCurrentThread->pNext)
 724             {
 725                 /* Just destroy the IOCHAN, that should do the trick */
 726                 iochan_destroy(pCurrentThread->pIOChannel);
 727                 closesocket(pCurrentThread->pIOChannel->fd);
 728
 729                 /* Keep a running count of our handles */
 730                 iHandles++;
 731             }
 732
 733             if (iHandles > 0)
 734             {
 735                 HANDLE *pCurrentHandle ;
 736
 737                 /* Allocate the thread handle array */
 738                 pThreadHandles = (HANDLE *)malloc(sizeof(HANDLE) * iHandles);
 739                 pCurrentHandle = pThreadHandles;
 740
 741                 for (pCurrentThread = pFirstThread;
 742                      pCurrentThread != NULL;
 743                      pCurrentThread = pCurrentThread->pNext, pCurrentHandle++)
 744                 {
 745                     /* Just the handle */
 746                     *pCurrentHandle = pCurrentThread->hThread;
 747                 }
 748             }
 749
 750             /* We can now leave the critical section */
 751             LeaveCriticalSection(&Thread_CritSect);
 752         }
 753
 754         /* Now we can really do something */
 755         if (iHandles > 0)
 756         {
 757             yaz_log(log_server, "waiting for %d to die", iHandles);
 758             /* This will now wait, until all the threads close */
 759             WaitForMultipleObjects(iHandles, pThreadHandles, TRUE, INFINITE);
 760
 761             /* Free the memory we allocated for the handle array */
 762             free(pThreadHandles);
 763         }
 764
 765         xml_config_bend_stop();
 766         /* No longer require the critical section, since all threads are dead */
 767         DeleteCriticalSection(&Thread_CritSect);
 768     }
 769     xml_config_close();
 770 }
 771
 772 void __cdecl event_loop_thread(IOCHAN iochan)
 773 {
 774     iochan_event_loop(&iochan);
 775 }
 776
 777 /* WIN32 listener */
 778 static void listener(IOCHAN h, int event)
 779 {
 780     COMSTACK line = (COMSTACK) iochan_getdata(h);
 781     IOCHAN parent_chan = line->user;
 782     association *newas;
 783     int res;
 784     HANDLE newHandle;
 785
 786     if (event == EVENT_INPUT)
 787     {
 788         COMSTACK new_line;
 789         IOCHAN new_chan;
 790
 791         if ((res = cs_listen(line, 0, 0)) < 0)
 792         {
 793             yaz_log(YLOG_FATAL|YLOG_ERRNO, "cs_listen failed");
 794             return;
 795         }
 796         else if (res == 1)
 797             return; /* incomplete */
 798         yaz_log(YLOG_DEBUG, "listen ok");
 799         new_line = cs_accept(line);
 800         if (!new_line)
 801         {
 802             yaz_log(YLOG_FATAL, "Accept failed.");
 803             return;
 804         }
 805         yaz_log(YLOG_DEBUG, "Accept ok");
 806
 807         if (!(new_chan = iochan_create(cs_fileno(new_line), ir_session,
 808                                        EVENT_INPUT, parent_chan->chan_id)))
 809         {
 810             yaz_log(YLOG_FATAL, "Failed to create iochan");
 811             iochan_destroy(h);
 812             return;
 813         }
 814
 815         yaz_log(YLOG_DEBUG, "Creating association");
 816         if (!(newas = create_association(new_chan, new_line,
 817                                          control_block.apdufile)))
 818         {
 819             yaz_log(YLOG_FATAL, "Failed to create new assoc.");
 820             iochan_destroy(h);
 821             return;
 822         }
 823         newas->cs_get_mask = EVENT_INPUT;
 824         newas->cs_put_mask = 0;
 825         newas->cs_accept_mask = 0;
 826
 827         yaz_log(YLOG_DEBUG, "Setting timeout %d", control_block.idle_timeout);
 828         iochan_setdata(new_chan, newas);
 829         iochan_settimeout(new_chan, 60);
 830
 831         /* Now what we need todo is create a new thread with this iochan as
 832            the parameter */
 833         newHandle = (HANDLE) _beginthread(event_loop_thread, 0, new_chan);
 834         if (newHandle == (HANDLE) -1)
 835         {
 836
 837             yaz_log(YLOG_FATAL|YLOG_ERRNO, "Failed to create new thread.");
 838             iochan_destroy(h);
 839             return;
 840         }
 841         /* We successfully created the thread, so add it to the list */
 842         statserv_add(newHandle, new_chan);
 843
 844         yaz_log(YLOG_DEBUG, "Created new thread, id = %ld iochan %p",(long) newHandle, new_chan);
 845         iochan_setflags(h, EVENT_INPUT | EVENT_EXCEPT); /* reset listener */
 846     }
 847     else
 848     {
 849         yaz_log(YLOG_FATAL, "Bad event on listener.");
 850         iochan_destroy(h);
 851         return;
 852     }
 853 }
 854
 855 int statserv_must_terminate(void)
 856 {
 857     return 0;
 858 }
 859
 860 #else /* ! WIN32 */
 861
 862 static int term_flag = 0;
 863 /* To save having an #ifdef in event_loop we need to
 864    define this empty function
 865 */
 866 int statserv_must_terminate(void)
 867 {
 868     return term_flag;
 869 }
 870
 871 void statserv_remove(IOCHAN pIOChannel)
 872 {
 873 }
 874
 875 static void statserv_closedown(void)
 876 {
 877     IOCHAN p;
 878
 879     xml_config_bend_stop();
 880     for (p = pListener; p; p = p->next)
 881     {
 882         iochan_destroy(p);
 883     }
 884     xml_config_close();
 885 }
 886
 887 void sigterm(int sig)
 888 {
 889     term_flag = 1;
 890 }
 891
 892 static void *new_session(void *vp);
 893 static int no_sessions = 0;
 894
 895 /* UNIX listener */
 896 static void listener(IOCHAN h, int event)
 897 {
 898     COMSTACK line = (COMSTACK) iochan_getdata(h);
 899     int res;
 900
 901     if (event == EVENT_INPUT)
 902     {
 903         COMSTACK new_line;
 904         if ((res = cs_listen_check(line, 0, 0, control_block.check_ip,
 905                                    control_block.daemon_name)) < 0)
 906         {
 907             yaz_log(YLOG_WARN|YLOG_ERRNO, "cs_listen failed");
 908             return;
 909         }
 910         else if (res == 1)
 911         {
 912             yaz_log(YLOG_WARN, "cs_listen incomplete");
 913             return;
 914         }
 915         new_line = cs_accept(line);
 916         if (!new_line)
 917         {
 918             yaz_log(YLOG_FATAL, "Accept failed.");
 919             iochan_setflags(h, EVENT_INPUT | EVENT_EXCEPT); /* reset listener */
 920             return;
 921         }
 922
 923         yaz_log(log_sessiondetail, "Connect from %s", cs_addrstr(new_line));
 924
 925         no_sessions++;
 926         if (control_block.dynamic)
 927         {
 928             if ((res = fork()) < 0)
 929             {
 930                 yaz_log(YLOG_FATAL|YLOG_ERRNO, "fork");
 931                 iochan_destroy(h);
 932                 return;
 933             }
 934             else if (res == 0) /* child */
 935             {
 936                 char nbuf[100];
 937                 IOCHAN pp;
 938
 939                 for (pp = pListener; pp; pp = iochan_getnext(pp))
 940                 {
 941                     COMSTACK l = (COMSTACK)iochan_getdata(pp);
 942                     cs_close(l);
 943                     iochan_destroy(pp);
 944                 }
 945                 sprintf(nbuf, "%s(%d)", me, no_sessions);
 946                 yaz_log_init_prefix(nbuf);
 947                 /* ensure that bend_stop is not called when each child exits -
 948                    only for the main process ..  */
 949                 control_block.bend_stop = 0;
 950             }
 951             else /* parent */
 952             {
 953                 cs_close(new_line);
 954                 return;
 955             }
 956         }
 957
 958         if (control_block.threads)
 959         {
 960 #if YAZ_POSIX_THREADS
 961             pthread_t child_thread;
 962             pthread_create(&child_thread, 0, new_session, new_line);
 963             pthread_detach(child_thread);
 964 #elif YAZ_GNU_THREADS
 965             pth_attr_t attr;
 966             pth_t child_thread;
 967
 968             attr = pth_attr_new();
 969             pth_attr_set(attr, PTH_ATTR_JOINABLE, FALSE);
 970             pth_attr_set(attr, PTH_ATTR_STACK_SIZE, 32*1024);
 971             pth_attr_set(attr, PTH_ATTR_NAME, "session");
 972             yaz_log(YLOG_DEBUG, "pth_spawn begin");
 973             child_thread = pth_spawn(attr, new_session, new_line);
 974             yaz_log(YLOG_DEBUG, "pth_spawn finish");
 975             pth_attr_destroy(attr);
 976 #else
 977             new_session(new_line);
 978 #endif
 979         }
 980         else
 981             new_session(new_line);
 982     }
 983     else if (event == EVENT_TIMEOUT)
 984     {
 985         yaz_log(log_server, "Shutting down listener.");
 986         iochan_destroy(h);
 987     }
 988     else
 989     {
 990         yaz_log(YLOG_FATAL, "Bad event on listener.");
 991         iochan_destroy(h);
 992     }
 993 }
 994
 995 static void *new_session(void *vp)
 996 {
 997     char *a;
 998     association *newas;
 999     IOCHAN new_chan;
1000     COMSTACK new_line = (COMSTACK) vp;
1001     IOCHAN parent_chan = (IOCHAN) new_line->user;
1002
1003     unsigned cs_get_mask, cs_accept_mask, mask =
1004         ((new_line->io_pending & CS_WANT_WRITE) ? EVENT_OUTPUT : 0) |
1005         ((new_line->io_pending & CS_WANT_READ) ? EVENT_INPUT : 0);
1006
1007     if (mask)
1008     {
1009         cs_accept_mask = mask;  /* accept didn't complete */
1010         cs_get_mask = 0;
1011     }
1012     else
1013     {
1014         cs_accept_mask = 0;     /* accept completed.  */
1015         cs_get_mask = mask = EVENT_INPUT;
1016     }
1017
1018     if (!(new_chan = iochan_create(cs_fileno(new_line), ir_session, mask,
1019                                    parent_chan->chan_id)))
1020     {
1021         yaz_log(YLOG_FATAL, "Failed to create iochan");
1022         return 0;
1023     }
1024     if (!(newas = create_association(new_chan, new_line,
1025                                      control_block.apdufile)))
1026     {
1027         yaz_log(YLOG_FATAL, "Failed to create new assoc.");
1028         return 0;
1029     }
1030     newas->cs_accept_mask = cs_accept_mask;
1031     newas->cs_get_mask = cs_get_mask;
1032
1033     iochan_setdata(new_chan, newas);
1034     iochan_settimeout(new_chan, 60);
1035 #if 1
1036     a = cs_addrstr(new_line);
1037 #else
1038     a = 0;
1039 #endif
1040     yaz_log_xml_errors(0, YLOG_WARN);
1041     yaz_log(log_session, "Session - OK %d %s %ld",
1042             no_sessions, a ? a : "[Unknown]", (long) getpid());
1043     if (max_sessions && no_sessions >= max_sessions)
1044         control_block.one_shot = 1;
1045     if (control_block.threads)
1046     {
1047         iochan_event_loop(&new_chan);
1048     }
1049     else
1050     {
1051         new_chan->next = pListener;
1052         pListener = new_chan;
1053     }
1054     return 0;
1055 }
1056
1057 /* UNIX */
1058 #endif
1059
1060 static void inetd_connection(int what)
1061 {
1062     COMSTACK line;
1063     IOCHAN chan;
1064     association *assoc;
1065     char *addr;
1066
1067     if ((line = cs_createbysocket(0, tcpip_type, 0, what)))
1068     {
1069         if ((chan = iochan_create(cs_fileno(line), ir_session, EVENT_INPUT,
1070                                   0)))
1071         {
1072             if ((assoc = create_association(chan, line,
1073                                             control_block.apdufile)))
1074             {
1075                 iochan_setdata(chan, assoc);
1076                 iochan_settimeout(chan, 60);
1077                 addr = cs_addrstr(line);
1078                 yaz_log(log_sessiondetail, "Inetd association from %s",
1079                         addr ? addr : "[UNKNOWN]");
1080                 assoc->cs_get_mask = EVENT_INPUT;
1081             }
1082             else
1083             {
1084                 yaz_log(YLOG_FATAL, "Failed to create association structure");
1085             }
1086             chan->next = pListener;
1087             pListener = chan;
1088         }
1089         else
1090         {
1091             yaz_log(YLOG_FATAL, "Failed to create iochan");
1092         }
1093     }
1094     else
1095     {
1096         yaz_log(YLOG_ERRNO|YLOG_FATAL, "Failed to create comstack on socket 0");
1097     }
1098 }
1099
1100 /*
1101  * Set up a listening endpoint, and give it to the event-handler.
1102  */
1103 static int add_listener(char *where, int listen_id)
1104 {
1105     COMSTACK l;
1106     void *ap;
1107     IOCHAN lst = NULL;
1108     const char *mode;
1109
1110     if (control_block.dynamic)
1111         mode = "dynamic";
1112     else if (control_block.threads)
1113         mode = "threaded";
1114     else
1115         mode = "static";
1116
1117     yaz_log(log_server, "Adding %s listener on %s id=%d", mode, where,
1118             listen_id);
1119
1120     l = cs_create_host(where, 2, &ap);
1121     if (!l)
1122     {
1123         yaz_log(YLOG_FATAL, "Failed to listen on %s", where);
1124         return -1;
1125     }
1126     if (*control_block.cert_fname)
1127         cs_set_ssl_certificate_file(l, control_block.cert_fname);
1128
1129     if (cs_bind(l, ap, CS_SERVER) < 0)
1130     {
1131         if (cs_errno(l) == CSYSERR)
1132             yaz_log(YLOG_FATAL|YLOG_ERRNO, "Failed to bind to %s", where);
1133         else
1134             yaz_log(YLOG_FATAL, "Failed to bind to %s: %s", where,
1135                     cs_strerror(l));
1136         cs_close(l);
1137         return -1;
1138     }
1139     if (!(lst = iochan_create(cs_fileno(l), listener, EVENT_INPUT |
1140                               EVENT_EXCEPT, listen_id)))
1141     {
1142         yaz_log(YLOG_FATAL|YLOG_ERRNO, "Failed to create IOCHAN-type");
1143         cs_close(l);
1144         return -1;
1145     }
1146     iochan_setdata(lst, l); /* user-defined data for listener is COMSTACK */
1147     l->user = lst;  /* user-defined data for COMSTACK is listener chan */
1148
1149     /* Add listener to chain */
1150     lst->next = pListener;
1151     pListener = lst;
1152     return 0; /* OK */
1153 }
1154
1155 #ifndef WIN32
1156 /* UNIX only (for windows we don't need to catch the signals) */
1157 static void catchchld(int num)
1158 {
1159     while (waitpid(-1, 0, WNOHANG) > 0)
1160         ;
1161     signal(SIGCHLD, catchchld);
1162 }
1163 #endif
1164
1165 statserv_options_block *statserv_getcontrol(void)
1166 {
1167 #ifdef WIN32
1168     if (init_control_tls)
1169         return (statserv_options_block *) TlsGetValue(current_control_tls);
1170     else
1171         return &control_block;
1172 #elif YAZ_POSIX_THREADS
1173     if (init_control_tls)
1174         return (statserv_options_block *)
1175             pthread_getspecific(current_control_tls);
1176     else
1177         return &control_block;
1178 #else
1179     if (current_control_block)
1180         return current_control_block;
1181     return &control_block;
1182 #endif
1183 }
1184
1185 void statserv_setcontrol(statserv_options_block *block)
1186 {
1187     if (gfs_root_dir[0])
1188     {
1189         if (chdir(gfs_root_dir))
1190             yaz_log(YLOG_WARN|YLOG_ERRNO, "chdir %s", gfs_root_dir);
1191     }
1192 #ifdef WIN32
1193     if (init_control_tls)
1194         TlsSetValue(current_control_tls, block);
1195 #elif YAZ_POSIX_THREADS
1196     if (init_control_tls)
1197         pthread_setspecific(current_control_tls, block);
1198 #else
1199     current_control_block = block;
1200 #endif
1201 }
1202
1203 static void statserv_reset(void)
1204 {
1205 }
1206
1207 static int statserv_sc_main(yaz_sc_t s, int argc, char **argv)
1208 {
1209     char sep;
1210 #ifdef WIN32
1211     /* We need to initialize the thread list */
1212     ThreadList_Initialize();
1213 /* WIN32 */
1214 #endif
1215
1216
1217 #ifdef WIN32
1218     sep = '\\';
1219 #else
1220     sep = '/';
1221 #endif
1222     if ((me = strrchr(argv[0], sep)))
1223         me++; /* get the basename */
1224     else
1225         me = argv[0];
1226     programname = argv[0];
1227
1228     if (control_block.options_func(argc, argv))
1229         return 1;
1230
1231     xml_config_open();
1232
1233     xml_config_bend_start();
1234
1235 #ifdef WIN32
1236     xml_config_add_listeners();
1237
1238     yaz_log(log_server, "Starting server %s", me);
1239     if (!pListener && *control_block.default_listen)
1240         add_listener(control_block.default_listen, 0);
1241 #else
1242 /* UNIX */
1243     if (control_block.inetd)
1244         inetd_connection(control_block.default_proto);
1245     else
1246     {
1247         static int hand[2];
1248         if (control_block.background)
1249         {
1250             /* create pipe so that parent waits until child has created
1251                PID (or failed) */
1252             if (pipe(hand) < 0)
1253             {
1254                 yaz_log(YLOG_FATAL|YLOG_ERRNO, "pipe");
1255                 return 1;
1256             }
1257             switch (fork())
1258             {
1259             case 0:
1260                 break;
1261             case -1:
1262                 return 1;
1263             default:
1264                 close(hand[1]);
1265                 while(1)
1266                 {
1267                     char dummy[1];
1268                     int res = read(hand[0], dummy, 1);
1269                     if (res < 0 && yaz_errno() != EINTR)
1270                     {
1271                         yaz_log(YLOG_FATAL|YLOG_ERRNO, "read fork handshake");
1272                         break;
1273                     }
1274                     else if (res >= 0)
1275                         break;
1276                 }
1277                 close(hand[0]);
1278                 _exit(0);
1279             }
1280             /* child */
1281             close(hand[0]);
1282             if (setsid() < 0)
1283                 return 1;
1284
1285             close(0);
1286             close(1);
1287             close(2);
1288             open("/dev/null", O_RDWR);
1289             if (dup(0) == -1)
1290                 return 1;
1291             if (dup(0) == -1)
1292                 return 1;
1293         }
1294         xml_config_add_listeners();
1295
1296         if (!pListener && *control_block.default_listen)
1297             add_listener(control_block.default_listen, 0);
1298
1299         if (!pListener)
1300             return 1;
1301
1302         if (*control_block.pid_fname)
1303         {
1304             FILE *f = fopen(control_block.pid_fname, "w");
1305             if (!f)
1306             {
1307                 yaz_log(YLOG_FATAL|YLOG_ERRNO, "Couldn't create %s",
1308                         control_block.pid_fname);
1309                 exit(0);
1310             }
1311             fprintf(f, "%ld", (long) getpid());
1312             fclose(f);
1313         }
1314
1315         if (control_block.background)
1316             close(hand[1]);
1317
1318
1319         yaz_log(log_server, "Starting server %s pid=%ld", programname,
1320                 (long) getpid());
1321 #if 0
1322         sigset_t sigs_to_block;
1323
1324         sigemptyset(&sigs_to_block);
1325         sigaddset(&sigs_to_block, SIGTERM);
1326         pthread_sigmask(SIG_BLOCK, &sigs_to_block, 0);
1327         /* missing... */
1328 #endif
1329         if (control_block.dynamic)
1330             signal(SIGCHLD, catchchld);
1331     }
1332     signal(SIGPIPE, SIG_IGN);
1333     signal(SIGTERM, sigterm);
1334     if (*control_block.setuid)
1335     {
1336         struct passwd *pw;
1337
1338         if (!(pw = getpwnam(control_block.setuid)))
1339         {
1340             yaz_log(YLOG_FATAL, "%s: Unknown user", control_block.setuid);
1341             return(1);
1342         }
1343         if (setuid(pw->pw_uid) < 0)
1344         {
1345             yaz_log(YLOG_FATAL|YLOG_ERRNO, "setuid");
1346             exit(1);
1347         }
1348     }
1349 /* UNIX */
1350 #endif
1351     if (pListener == NULL)
1352         return 1;
1353     if (s)
1354         yaz_sc_running(s);
1355     yaz_log(YLOG_DEBUG, "Entering event loop.");
1356     return iochan_event_loop(&pListener);
1357 }
1358
1359 static void option_copy(char *dst, const char *src)
1360 {
1361     strncpy(dst, src ? src : "", 127);
1362     dst[127] = '\0';
1363 }
1364
1365 int check_options(int argc, char **argv)
1366 {
1367     int ret = 0, r;
1368     char *arg;
1369
1370     yaz_log_init_level(yaz_log_mask_str(STAT_DEFAULT_LOG_LEVEL));
1371
1372     get_logbits(1);
1373
1374     while ((ret = options("1a:iszSTl:v:u:c:w:t:k:d:A:p:DC:f:m:r:",
1375                           argv, argc, &arg)) != -2)
1376     {
1377         switch (ret)
1378         {
1379         case 0:
1380             if (add_listener(arg, 0))
1381                 return 1;  /* failed to create listener */
1382             break;
1383         case '1':
1384             control_block.one_shot = 1;
1385             control_block.dynamic = 0;
1386             break;
1387         case 'z':
1388             control_block.default_proto = PROTO_Z3950;
1389             break;
1390         case 's':
1391             fprintf(stderr, "%s: SR protocol no longer supported\n", me);
1392             exit(1);
1393             break;
1394         case 'S':
1395             control_block.dynamic = 0;
1396             break;
1397         case 'T':
1398 #if YAZ_POSIX_THREADS
1399             control_block.dynamic = 0;
1400             control_block.threads = 1;
1401 #elif YAZ_GNU_THREADS
1402             control_block.dynamic = 0;
1403             control_block.threads = 1;
1404 #else
1405             fprintf(stderr, "%s: Threaded mode not available.\n", me);
1406             return 1;
1407 #endif
1408             break;
1409         case 'l':
1410             option_copy(control_block.logfile, arg);
1411             yaz_log_init_file(control_block.logfile);
1412             break;
1413         case 'm':
1414             if (!arg) {
1415                 fprintf(stderr, "%s: Specify time format for log file.\n", me);
1416                 return(1);
1417             }
1418             yaz_log_time_format(arg);
1419             break;
1420         case 'v':
1421             yaz_log_init_level(yaz_log_mask_str(arg));
1422             get_logbits(1);
1423             break;
1424         case 'a':
1425             option_copy(control_block.apdufile, arg);
1426             break;
1427         case 'u':
1428             option_copy(control_block.setuid, arg);
1429             break;
1430         case 'c':
1431             option_copy(control_block.configname, arg);
1432             break;
1433         case 'C':
1434             option_copy(control_block.cert_fname, arg);
1435             break;
1436         case 'd':
1437             option_copy(control_block.daemon_name, arg);
1438             break;
1439         case 't':
1440             if (!arg || !(r = atoi(arg)))
1441             {
1442                 fprintf(stderr, "%s: Specify positive timeout for -t.\n", me);
1443                 return(1);
1444             }
1445             control_block.idle_timeout = r;
1446             break;
1447         case  'k':
1448             if (!arg || !(r = atoi(arg)))
1449             {
1450                 fprintf(stderr, "%s: Specify positive size for -k.\n", me);
1451                 return(1);
1452             }
1453             control_block.maxrecordsize = r * 1024;
1454             break;
1455         case 'i':
1456             control_block.inetd = 1;
1457             break;
1458         case 'w':
1459             if (chdir(arg))
1460             {
1461                 perror(arg);
1462                 return 1;
1463             }
1464             break;
1465         case 'A':
1466             max_sessions = atoi(arg);
1467             break;
1468         case 'p':
1469             option_copy(control_block.pid_fname, arg);
1470             break;
1471         case 'f':
1472 #if YAZ_HAVE_XML2
1473             option_copy(control_block.xml_config, arg);
1474 #else
1475             fprintf(stderr, "%s: Option -f unsupported since YAZ is compiled without Libxml2 support\n", me);
1476             exit(1);
1477 #endif
1478             break;
1479         case 'D':
1480             control_block.background = 1;
1481             break;
1482         case 'r':
1483             if (!arg || !(r = atoi(arg)))
1484             {
1485                 fprintf(stderr, "%s: Specify positive size for -r.\n", me);
1486                 return(1);
1487             }
1488             yaz_log_init_max_size(r * 1024);
1489             break;
1490         default:
1491             fprintf(stderr, "Usage: %s [ -a <pdufile> -v <loglevel>"
1492                     " -l <logfile> -u <user> -c <config> -t <minutes>"
1493                     " -k <kilobytes> -d <daemon> -p <pidfile> -C certfile"
1494                     " -ziDST1 -m <time-format> -w <directory> <listener-addr>... ]\n", me);
1495             return 1;
1496         }
1497     }
1498     return 0;
1499 }
1500
1501 void statserv_sc_stop(yaz_sc_t s)
1502 {
1503     statserv_closedown();
1504     statserv_reset();
1505 }
1506
1507 int statserv_main(int argc, char **argv,
1508                   bend_initresult *(*bend_init)(bend_initrequest *r),
1509                   void (*bend_close)(void *handle))
1510 {
1511     int ret;
1512     struct statserv_options_block *cb = &control_block;
1513
1514     /* control block does not have service_name member on Unix */
1515     yaz_sc_t s = yaz_sc_create(
1516 #ifdef WIN32
1517         cb->service_name, cb->service_display_name
1518 #else
1519         0, 0
1520 #endif
1521         );
1522
1523     cb->bend_init = bend_init;
1524     cb->bend_close = bend_close;
1525
1526     ret = yaz_sc_program(s, argc, argv, statserv_sc_main, statserv_sc_stop);
1527     yaz_sc_destroy(&s);
1528     return ret;
1529 }
1530
1531 /*
1532  * Local variables:
1533  * c-basic-offset: 4
1534  * indent-tabs-mode: nil
1535  * End:
1536  * vim: shiftwidth=4 tabstop=8 expandtab
1537  */
1538