index/zserver.c

   1 /* $Id: zserver.c,v 1.109 2003-07-02 22:00:06 adam Exp $
   2    Copyright (C) 1995,1996,1997,1998,1999,2000,2001,2002,2003
   3    Index Data Aps
   4
   5 This file is part of the Zebra server.
   6
   7 Zebra is free software; you can redistribute it and/or modify it under
   8 the terms of the GNU General Public License as published by the Free
   9 Software Foundation; either version 2, or (at your option) any later
  10 version.
  11
  12 Zebra is distributed in the hope that it will be useful, but WITHOUT ANY
  13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  15 for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with Zebra; see the file LICENSE.zebra.  If not, write to the
  19 Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
  20 02111-1307, USA.
  21 */
  22
  23 #include <stdio.h>
  24 #include <assert.h>
  25 #include <fcntl.h>
  26 #ifdef WIN32
  27 #include <io.h>
  28 #include <process.h>
  29 #include <sys/locking.h>
  30 #else
  31 #include <unistd.h>
  32 #endif
  33
  34 #include <errno.h>
  35 #include <yaz/log.h>
  36 #include <yaz/ill.h>
  37 #include <yaz/yaz-util.h>
  38
  39 #include <sys/types.h>
  40
  41 #include "zserver.h"
  42
  43 static int bend_sort (void *handle, bend_sort_rr *rr);
  44 static int bend_delete (void *handle, bend_delete_rr *rr);
  45 static int bend_esrequest (void *handle, bend_esrequest_rr *rr);
  46 static int bend_segment (void *handle, bend_segment_rr *rr);
  47 static int bend_search (void *handle, bend_search_rr *r);
  48 static int bend_fetch (void *handle, bend_fetch_rr *r);
  49 static int bend_scan (void *handle, bend_scan_rr *r);
  50
  51 bend_initresult *bend_init (bend_initrequest *q)
  52 {
  53     bend_initresult *r = (bend_initresult *)
  54         odr_malloc (q->stream, sizeof(*r));
  55     ZebraHandle zh;
  56     struct statserv_options_block *sob;
  57     char *user = NULL;
  58     char *passwd = NULL;
  59
  60     r->errcode = 0;
  61     r->errstring = 0;
  62     q->bend_sort = bend_sort;
  63     q->bend_delete = bend_delete;
  64     q->bend_esrequest = bend_esrequest;
  65     q->bend_segment = bend_segment;
  66     q->bend_search = bend_search;
  67     q->bend_fetch = bend_fetch;
  68     q->bend_scan = bend_scan;
  69
  70     q->implementation_name = "Zebra Information Server";
  71     q->implementation_version = "Zebra " ZEBRAVER;
  72
  73     yaz_log (LOG_DEBUG, "bend_init");
  74
  75     sob = statserv_getcontrol ();
  76     if (!(zh = zebra_open (sob->handle)))
  77     {
  78         yaz_log (LOG_WARN, "Failed to read config `%s'", sob->configname);
  79         r->errcode = 1;
  80         return r;
  81     }
  82     if (q->auth)
  83     {
  84         if (q->auth->which == Z_IdAuthentication_open)
  85         {
  86             char *openpass = xstrdup (q->auth->u.open);
  87             char *cp = strchr (openpass, '/');
  88             if (cp)
  89             {
  90                 *cp = '\0';
  91                 user = nmem_strdup (odr_getmem (q->stream), openpass);
  92                 passwd = nmem_strdup (odr_getmem (q->stream), cp+1);
  93             }
  94             xfree (openpass);
  95         }
  96     }
  97     if (zebra_auth (zh, user, passwd))
  98     {
  99         r->errcode = 222;
 100         r->errstring = user;
 101         zebra_close (zh);
 102         return r;
 103     }
 104     r->handle = zh;
 105     if (q->charneg_request) /* characater set and langauge negotiation? */
 106     {
 107         char **charsets = 0;
 108         int num_charsets;
 109         char **langs = 0;
 110         int num_langs = 0;
 111         int selected = 0;
 112         int i;
 113         NMEM nmem = nmem_create();
 114
 115         yaz_log (LOG_LOG, "character set and language negotiation");
 116
 117         yaz_get_proposal_charneg (nmem, q->charneg_request,
 118                                   &charsets, &num_charsets,
 119                                   &langs, &num_langs, &selected);
 120
 121         for (i = 0; i < num_charsets; i++)
 122         {
 123             const char *right_name = "";
 124             /*
 125              * FIXME! It is like rudiment :-))
 126              * We have to support this short names of character sets,
 127              * because a lot servers in Russia to use own in during
 128              * character set and language negotiation still.
 129              */
 130
 131             if (!yaz_matchstr(charsets[i], "win")) {
 132                 right_name = "WINDOWS-1251";
 133             } else if (!yaz_matchstr(charsets[i], "koi")) {
 134                 right_name = "KOI8-R";
 135             } else if (!yaz_matchstr(charsets[i], "iso")) {
 136                 right_name = "ISO-8859-5";
 137             } else if (!yaz_matchstr(charsets[i], "dos")) {
 138                 right_name = "CP866";
 139             } else if (!yaz_matchstr(charsets[i], "uni")) {
 140                 right_name = "UTF-8";
 141             } else {
 142                 right_name = charsets[i];
 143             }
 144             if (odr_set_charset (q->decode, "UTF-8", right_name) == 0)
 145             {
 146                 yaz_log (LOG_LOG, "charset %d %s (proper name %s): OK", i,
 147                          charsets[i], right_name);
 148                 odr_set_charset (q->stream, right_name, "UTF-8");
 149                 if (selected)
 150                     zebra_record_encoding (zh, right_name);
 151                 q->charneg_response =
 152                     yaz_set_response_charneg (q->stream, right_name,
 153                                               0, selected);
 154                 break;
 155             } else {
 156                 yaz_log (LOG_LOG, "charset %d %s (proper name %s): unsupported", i,
 157                          charsets[i], right_name);
 158             }
 159         }
 160         nmem_destroy(nmem);
 161     }
 162     return r;
 163 }
 164
 165 static void search_terms (ZebraHandle zh, bend_search_rr *r)
 166 {
 167     int count;
 168     int no_terms;
 169     int i;
 170     int type;
 171     struct Z_External *ext;
 172     Z_SearchInfoReport *sr;
 173
 174     /* get no of terms for result set */
 175     no_terms = zebra_resultSetTerms (zh, r->setname, 0, 0, 0, 0, 0);
 176     if (!no_terms)
 177         return;
 178
 179     r->search_info = odr_malloc (r->stream, sizeof(*r->search_info));
 180
 181     r->search_info->num_elements = 1;
 182     r->search_info->list =
 183         odr_malloc (r->stream, sizeof(*r->search_info->list));
 184     r->search_info->list[0] =
 185         odr_malloc (r->stream, sizeof(**r->search_info->list));
 186     r->search_info->list[0]->category = 0;
 187     r->search_info->list[0]->which = Z_OtherInfo_externallyDefinedInfo;
 188     ext = odr_malloc (r->stream, sizeof(*ext));
 189     r->search_info->list[0]->information.externallyDefinedInfo = ext;
 190     ext->direct_reference =
 191         yaz_oidval_to_z3950oid (r->stream, CLASS_USERINFO, VAL_SEARCHRES1);
 192     ext->indirect_reference = 0;
 193     ext->descriptor = 0;
 194     ext->which = Z_External_searchResult1;
 195     sr = odr_malloc (r->stream, sizeof(Z_SearchInfoReport));
 196     ext->u.searchResult1 = sr;
 197     sr->num = no_terms;
 198     sr->elements = odr_malloc (r->stream, sr->num *
 199                                sizeof(*sr->elements));
 200     for (i = 0; i<no_terms; i++)
 201     {
 202         Z_Term *term;
 203         char outbuf[1024];
 204         size_t len = sizeof(outbuf);
 205         zebra_resultSetTerms (zh, r->setname, i,
 206                               &count, &type, outbuf, &len);
 207
 208         sr->elements[i] = odr_malloc (r->stream, sizeof(**sr->elements));
 209         sr->elements[i]->subqueryId = 0;
 210         sr->elements[i]->fullQuery = odr_malloc (r->stream,
 211                                                  sizeof(bool_t));
 212         *sr->elements[i]->fullQuery = 0;
 213         sr->elements[i]->subqueryExpression =
 214             odr_malloc (r->stream, sizeof(Z_QueryExpression));
 215         sr->elements[i]->subqueryExpression->which =
 216             Z_QueryExpression_term;
 217         sr->elements[i]->subqueryExpression->u.term =
 218             odr_malloc (r->stream, sizeof(Z_QueryExpressionTerm));
 219         term = odr_malloc (r->stream, sizeof(Z_Term));
 220         sr->elements[i]->subqueryExpression->u.term->queryTerm = term;
 221         switch (type)
 222         {
 223         case Z_Term_characterString:
 224             yaz_log (LOG_DEBUG, "term as characterString");
 225             term->which = Z_Term_characterString;
 226             term->u.characterString = odr_strdup (r->stream, outbuf);
 227             break;
 228         case Z_Term_general:
 229             yaz_log (LOG_DEBUG, "term as general");
 230             term->which = Z_Term_general;
 231             term->u.general = odr_malloc (r->stream, sizeof(*term->u.general));
 232             term->u.general->size = term->u.general->len = len;
 233             term->u.general->buf = odr_malloc (r->stream, len);
 234             memcpy (term->u.general->buf, outbuf, len);
 235             break;
 236         default:
 237             term->which = Z_Term_general;
 238             term->u.null = odr_nullval();
 239         }
 240         sr->elements[i]->subqueryExpression->u.term->termComment = 0;
 241         sr->elements[i]->subqueryInterpretation = 0;
 242         sr->elements[i]->subqueryRecommendation = 0;
 243         sr->elements[i]->subqueryCount = odr_intdup (r->stream, count);
 244         sr->elements[i]->subqueryWeight = 0;
 245         sr->elements[i]->resultsByDB = 0;
 246     }
 247 }
 248
 249 int bend_search (void *handle, bend_search_rr *r)
 250 {
 251     ZebraHandle zh = (ZebraHandle) handle;
 252
 253     r->hits = 0;
 254     r->errcode = 0;
 255     r->errstring = NULL;
 256
 257     if (zebra_select_databases (zh, r->num_bases,
 258                                 (const char **) r->basenames))
 259     {
 260         zebra_result (zh, &r->errcode, &r->errstring);
 261         return 0;
 262     }
 263     yaz_log (LOG_LOG, "ResultSet '%s'", r->setname);
 264     switch (r->query->which)
 265     {
 266     case Z_Query_type_1: case Z_Query_type_101:
 267         zebra_search_RPN (zh, r->stream, r->query->u.type_1,
 268                           r->setname, &r->hits);
 269         zebra_result (zh, &r->errcode, &r->errstring);
 270         if (!r->errcode)
 271             search_terms (zh, r);
 272         break;
 273     case Z_Query_type_2:
 274         r->errcode = 107;
 275         r->errstring = "type-2";
 276         break;
 277     default:
 278         r->errcode = 107;
 279     }
 280     return 0;
 281 }
 282
 283
 284 int bend_fetch (void *handle, bend_fetch_rr *r)
 285 {
 286     ZebraHandle zh = (ZebraHandle) handle;
 287     ZebraRetrievalRecord retrievalRecord;
 288
 289     retrievalRecord.position = r->number;
 290
 291     r->last_in_set = 0;
 292     zebra_records_retrieve (zh, r->stream, r->setname, r->comp,
 293                             r->request_format, 1, &retrievalRecord);
 294     zebra_result (zh, &r->errcode, &r->errstring);
 295     /*  non Surrogate Diagnostic OR Surrogate Diagnostic */
 296     if (r->errcode == 0 && retrievalRecord.errCode)
 297     {
 298         r->surrogate_flag = 1;
 299         r->errcode = retrievalRecord.errCode;
 300         r->errstring = retrievalRecord.errString;
 301         r->basename = retrievalRecord.base;
 302     }
 303     else if (r->errcode == 0)        /* Database Record */
 304     {
 305         r->errcode = 0;
 306         r->basename = retrievalRecord.base;
 307         r->record = retrievalRecord.buf;
 308         r->len = retrievalRecord.len;
 309         r->output_format = retrievalRecord.format;
 310     }
 311     return 0;
 312 }
 313
 314 static int bend_scan (void *handle, bend_scan_rr *r)
 315 {
 316     ZebraScanEntry *entries;
 317     ZebraHandle zh = (ZebraHandle) handle;
 318     int is_partial, i;
 319
 320     if (zebra_select_databases (zh, r->num_bases,
 321                                 (const char **) r->basenames))
 322     {
 323         zebra_result (zh, &r->errcode, &r->errstring);
 324         return 0;
 325     }
 326     r->entries = (struct scan_entry *)
 327         odr_malloc (r->stream, sizeof(*r->entries) * r->num_entries);
 328     zebra_scan (zh, r->stream, r->term,
 329                 r->attributeset,
 330                 &r->term_position,
 331                 &r->num_entries, &entries, &is_partial);
 332     if (is_partial)
 333         r->status = BEND_SCAN_PARTIAL;
 334     else
 335         r->status = BEND_SCAN_SUCCESS;
 336     for (i = 0; i < r->num_entries; i++)
 337     {
 338         r->entries[i].term = entries[i].term;
 339         r->entries[i].occurrences = entries[i].occurrences;
 340     }
 341     zebra_result (zh, &r->errcode, &r->errstring);
 342     return 0;
 343 }
 344
 345 void bend_close (void *handle)
 346 {
 347     zebra_close ((ZebraHandle) handle);
 348     xmalloc_trav("bend_close");
 349     nmem_print_list();
 350 }
 351
 352 int bend_sort (void *handle, bend_sort_rr *rr)
 353 {
 354     ZebraHandle zh = (ZebraHandle) handle;
 355
 356     zebra_sort (zh, rr->stream,
 357                 rr->num_input_setnames, (const char **) rr->input_setnames,
 358                 rr->output_setname, rr->sort_sequence, &rr->sort_status);
 359     zebra_result (zh, &rr->errcode, &rr->errstring);
 360     return 0;
 361 }
 362
 363 int bend_delete (void *handle, bend_delete_rr *rr)
 364 {
 365     ZebraHandle zh = (ZebraHandle) handle;
 366
 367     rr->delete_status = zebra_deleleResultSet(zh, rr->function,
 368                                               rr->num_setnames, rr->setnames,
 369                                               rr->statuses);
 370     return 0;
 371 }
 372
 373 static int es_admin_request (ZebraHandle zh, Z_AdminEsRequest *r)
 374 {
 375     switch (r->toKeep->which)
 376     {
 377     case Z_ESAdminOriginPartToKeep_reIndex:
 378         yaz_log(LOG_LOG, "adm-reindex");
 379         break;
 380     case Z_ESAdminOriginPartToKeep_truncate:
 381         yaz_log(LOG_LOG, "adm-truncate");
 382         break;
 383     case Z_ESAdminOriginPartToKeep_drop:
 384         yaz_log(LOG_LOG, "adm-drop");
 385         zebra_drop_database (zh, r->toKeep->databaseName);
 386         break;
 387     case Z_ESAdminOriginPartToKeep_create:
 388         yaz_log(LOG_LOG, "adm-create %s", r->toKeep->databaseName);
 389         zebra_create_database (zh, r->toKeep->databaseName);
 390         break;
 391     case Z_ESAdminOriginPartToKeep_import:
 392         yaz_log(LOG_LOG, "adm-import");
 393         zebra_admin_import_begin (zh, r->toKeep->databaseName,
 394                         r->toKeep->u.import->recordType);
 395         break;
 396     case Z_ESAdminOriginPartToKeep_refresh:
 397         yaz_log(LOG_LOG, "adm-refresh");
 398         break;
 399     case Z_ESAdminOriginPartToKeep_commit:
 400         yaz_log(LOG_LOG, "adm-commit");
 401         break;
 402     case Z_ESAdminOriginPartToKeep_shutdown:
 403         yaz_log(LOG_LOG, "shutdown");
 404         zebra_admin_shutdown(zh);
 405         break;
 406     case Z_ESAdminOriginPartToKeep_start:
 407         yaz_log(LOG_LOG, "start");
 408         zebra_admin_start(zh);
 409         break;
 410     default:
 411         yaz_log(LOG_LOG, "unknown admin");
 412     }
 413     if (r->toKeep->databaseName)
 414     {
 415         yaz_log(LOG_LOG, "database %s", r->toKeep->databaseName);
 416     }
 417     return 0;
 418 }
 419
 420 static int es_admin (ZebraHandle zh, Z_Admin *r)
 421 {
 422     switch (r->which)
 423     {
 424     case Z_Admin_esRequest:
 425         es_admin_request (zh, r->u.esRequest);
 426         break;
 427     case Z_Admin_taskPackage:
 428         yaz_log (LOG_LOG, "adm taskpackage (unhandled)");
 429         break;
 430     default:
 431         break;
 432     }
 433
 434     return 0;
 435 }
 436
 437 int bend_segment (void *handle, bend_segment_rr *rr)
 438 {
 439     ZebraHandle zh = (ZebraHandle) handle;
 440     Z_Segment *segment = rr->segment;
 441
 442     if (segment->num_segmentRecords)
 443         zebra_admin_import_segment (zh, rr->segment);
 444     else
 445         zebra_admin_import_end (zh);
 446     return 0;
 447 }
 448
 449 int bend_esrequest (void *handle, bend_esrequest_rr *rr)
 450 {
 451     ZebraHandle zh = (ZebraHandle) handle;
 452
 453     yaz_log(LOG_LOG, "function: %d", *rr->esr->function);
 454     if (rr->esr->packageName)
 455         yaz_log(LOG_LOG, "packagename: %s", rr->esr->packageName);
 456     yaz_log(LOG_LOG, "Waitaction: %d", *rr->esr->waitAction);
 457
 458     if (!rr->esr->taskSpecificParameters)
 459     {
 460         yaz_log (LOG_WARN, "No task specific parameters");
 461     }
 462     else if (rr->esr->taskSpecificParameters->which == Z_External_ESAdmin)
 463     {
 464         es_admin (zh, rr->esr->taskSpecificParameters->u.adminService);
 465
 466         zebra_result (zh, &rr->errcode, &rr->errstring);
 467     }
 468     else if (rr->esr->taskSpecificParameters->which == Z_External_update)
 469     {
 470         Z_IUUpdate *up = rr->esr->taskSpecificParameters->u.update;
 471         yaz_log (LOG_LOG, "Received DB Update");
 472         if (up->which == Z_IUUpdate_esRequest)
 473         {
 474             Z_IUUpdateEsRequest *esRequest = up->u.esRequest;
 475             Z_IUOriginPartToKeep *toKeep = esRequest->toKeep;
 476             Z_IUSuppliedRecords *notToKeep = esRequest->notToKeep;
 477
 478             yaz_log (LOG_LOG, "action");
 479             if (toKeep->action)
 480             {
 481                 switch (*toKeep->action)
 482                 {
 483                 case Z_IUOriginPartToKeep_recordInsert:
 484                     yaz_log (LOG_LOG, "recordInsert");
 485                     break;
 486                 case Z_IUOriginPartToKeep_recordReplace:
 487                     yaz_log (LOG_LOG, "recordUpdate");
 488                     break;
 489                 case Z_IUOriginPartToKeep_recordDelete:
 490                     yaz_log (LOG_LOG, "recordDelete");
 491                     break;
 492                 case Z_IUOriginPartToKeep_elementUpdate:
 493                     yaz_log (LOG_LOG, "elementUpdate");
 494                     break;
 495                 case Z_IUOriginPartToKeep_specialUpdate:
 496                     yaz_log (LOG_LOG, "specialUpdate");
 497                     break;
 498                 case Z_ESAdminOriginPartToKeep_shutdown:
 499                     yaz_log (LOG_LOG, "shutDown");
 500                     break;
 501                 case Z_ESAdminOriginPartToKeep_start:
 502                     yaz_log (LOG_LOG, "start");
 503                     break;
 504                 default:
 505                     yaz_log (LOG_LOG, " unknown (%d)", *toKeep->action);
 506                 }
 507             }
 508             if (toKeep->databaseName)
 509             {
 510                 yaz_log (LOG_LOG, "database: %s", toKeep->databaseName);
 511
 512                 if (zebra_select_database(zh, toKeep->databaseName))
 513                     return 0;
 514             }
 515             else
 516             {
 517                 yaz_log (LOG_WARN, "no database supplied for ES Update");
 518                 rr->errcode = 1008;
 519                 rr->errstring = "database";
 520                 return 0;
 521             }
 522             if (notToKeep)
 523             {
 524                 int i;
 525                 zebra_begin_trans (zh, 1);
 526                 for (i = 0; i < notToKeep->num; i++)
 527                 {
 528                     Z_External *rec = notToKeep->elements[i]->record;
 529                     struct oident *oident = 0;
 530                     Odr_oct *recid = notToKeep->elements[i]->u.opaque;
 531
 532                     if (!recid)
 533                     {
 534                         rr->errcode = 224;
 535                         rr->errstring = "record Id not supplied";
 536                         break;
 537                     }
 538                     if (notToKeep->elements[i]->which !=
 539                         Z_IUSuppliedRecords_elem_opaque)
 540                     {
 541                         rr->errcode = 224;
 542                         rr->errstring = "only opaque record ID supported";
 543                         break;
 544                     }
 545
 546                     if (rec->direct_reference)
 547                     {
 548                         oident = oid_getentbyoid(rec->direct_reference);
 549                         if (oident)
 550                             yaz_log (LOG_LOG, "record %d type %s", i,
 551                                      oident->desc);
 552                     }
 553                     switch (rec->which)
 554                     {
 555                     case Z_External_sutrs:
 556                         if (rec->u.octet_aligned->len > 170)
 557                             yaz_log (LOG_LOG, "%d bytes:\n%.168s ...",
 558                                      rec->u.sutrs->len,
 559                                      rec->u.sutrs->buf);
 560                         else
 561                             yaz_log (LOG_LOG, "%d bytes:\n%s",
 562                                      rec->u.sutrs->len,
 563                                      rec->u.sutrs->buf);
 564                         break;
 565                     case Z_External_octet:
 566                         if (rec->u.octet_aligned->len > 170)
 567                             yaz_log (LOG_LOG, "%d bytes:\n%.168s ...",
 568                                      rec->u.octet_aligned->len,
 569                                      rec->u.octet_aligned->buf);
 570                         else
 571                             yaz_log (LOG_LOG, "%d bytes\n%s",
 572                                      rec->u.octet_aligned->len,
 573                                      rec->u.octet_aligned->buf);
 574                     }
 575                     if (oident && oident->value != VAL_TEXT_XML)
 576                     {
 577                         rr->errcode = 224;
 578                         rr->errstring = "only XML update supported";
 579                         break;
 580                     }
 581                     if (rec->which == Z_External_octet)
 582                     {
 583                         int action = 0;
 584
 585                         if (*toKeep->action ==
 586                             Z_IUOriginPartToKeep_recordInsert)
 587                             action = 1;
 588                         if (*toKeep->action ==
 589                             Z_IUOriginPartToKeep_recordReplace)
 590                             action = 2;
 591                         if (*toKeep->action ==
 592                             Z_IUOriginPartToKeep_recordDelete)
 593                             action = 3;
 594                         if (*toKeep->action ==
 595                             Z_IUOriginPartToKeep_specialUpdate)
 596                             action = 1;
 597
 598                         if (!action)
 599                         {
 600                             rr->errcode = 224;
 601                             rr->errstring = "unsupported ES Update action";
 602                             break;
 603                         }
 604                         else
 605                         {
 606                             int r = zebra_admin_exchange_record (
 607                                 zh, toKeep->databaseName,
 608                                 rec->u.octet_aligned->buf,
 609                                 rec->u.octet_aligned->len,
 610                                 recid->buf, recid->len,
 611                                 action);
 612                             if (r && *toKeep->action ==
 613                                 Z_IUOriginPartToKeep_specialUpdate)
 614                             {
 615                                 r = zebra_admin_exchange_record (
 616                                     zh, toKeep->databaseName,
 617                                     rec->u.octet_aligned->buf,
 618                                     rec->u.octet_aligned->len,
 619                                     recid->buf, recid->len,
 620                                     2);
 621                             }
 622                             if (r)
 623                             {
 624                                 rr->errcode = 224;
 625                                 rr->errstring = "record exchange failed";
 626                                 break;
 627                             }
 628                         }
 629                     }
 630                 }
 631                 zebra_end_trans (zh);
 632             }
 633         }
 634     }
 635     else
 636     {
 637         yaz_log (LOG_WARN, "Unknown Extended Service(%d)",
 638                  rr->esr->taskSpecificParameters->which);
 639         rr->errcode = 221;
 640
 641     }
 642     return 0;
 643 }
 644
 645 static void bend_start (struct statserv_options_block *sob)
 646 {
 647     if (sob->handle)
 648         zebra_stop((ZebraService) sob->handle);
 649     sob->handle = zebra_start(sob->configname);
 650     if (!sob->handle)
 651     {
 652         yaz_log (LOG_FATAL, "Failed to read config `%s'", sob->configname);
 653         exit (1);
 654     }
 655 #ifdef WIN32
 656
 657 #else
 658     if (!sob->inetd)
 659     {
 660         struct flock area;
 661         char *pidfile = "zebrasrv.pid";
 662         int fd = open (pidfile, O_EXCL|O_WRONLY|O_CREAT, 0666);
 663         if (fd == -1)
 664         {
 665             if (errno != EEXIST)
 666             {
 667                 yaz_log(LOG_FATAL|LOG_ERRNO, "lock file %s", pidfile);
 668                 exit(1);
 669             }
 670             fd = open(pidfile, O_RDWR, 0666);
 671             if (fd == -1)
 672             {
 673                 yaz_log(LOG_FATAL|LOG_ERRNO, "lock file %s", pidfile);
 674                 exit(1);
 675             }
 676         }
 677         area.l_type = F_WRLCK;
 678         area.l_whence = SEEK_SET;
 679         area.l_len = area.l_start = 0L;
 680         if (fcntl (fd, F_SETLK, &area) == -1)
 681         {
 682             yaz_log(LOG_ERRNO|LOG_FATAL, "Zebra server already running");
 683             exit(1);
 684         }
 685         else
 686         {
 687             char pidstr[30];
 688
 689             sprintf (pidstr, "%ld", (long) getpid ());
 690             write (fd, pidstr, strlen(pidstr));
 691         }
 692     }
 693 #endif
 694 }
 695
 696 static void bend_stop(struct statserv_options_block *sob)
 697 {
 698 #ifdef WIN32
 699
 700 #else
 701     if (!sob->inetd)
 702         unlink ("zebrasrv.pid");
 703 #endif
 704     if (sob->handle)
 705     {
 706         ZebraService service = sob->handle;
 707         zebra_stop(service);
 708     }
 709 }
 710
 711 int main (int argc, char **argv)
 712 {
 713     struct statserv_options_block *sob;
 714
 715     sob = statserv_getcontrol ();
 716     strcpy (sob->configname, "zebra.cfg");
 717     sob->bend_start = bend_start;
 718     sob->bend_stop = bend_stop;
 719 #ifdef WIN32
 720     strcpy (sob->service_display_name, "Zebra Server");
 721 #endif
 722     statserv_setcontrol (sob);
 723
 724     return statserv_main (argc, argv, bend_init, bend_close);
 725 }