src/pazpar2.c

   1 /* $Id: pazpar2.c,v 1.29 2007-01-14 17:34:31 adam Exp $ */
   2
   3 #include <stdlib.h>
   4 #include <stdio.h>
   5 #include <string.h>
   6 #include <sys/time.h>
   7 #include <unistd.h>
   8 #include <sys/socket.h>
   9 #include <netdb.h>
  10 #include <signal.h>
  11 #include <ctype.h>
  12 #include <assert.h>
  13
  14 #include <yaz/marcdisp.h>
  15 #include <yaz/comstack.h>
  16 #include <yaz/tcpip.h>
  17 #include <yaz/proto.h>
  18 #include <yaz/readconf.h>
  19 #include <yaz/pquery.h>
  20 #include <yaz/yaz-util.h>
  21 #include <yaz/nmem.h>
  22
  23 #if HAVE_CONFIG_H
  24 #include "cconfig.h"
  25 #endif
  26
  27 #define USE_TIMING 0
  28 #if USE_TIMING
  29 #include <yaz/timing.h>
  30 #endif
  31
  32 #include <netinet/in.h>
  33
  34 #include "pazpar2.h"
  35 #include "eventl.h"
  36 #include "http.h"
  37 #include "termlists.h"
  38 #include "reclists.h"
  39 #include "relevance.h"
  40 #include "config.h"
  41
  42 #define MAX_CHUNK 15
  43
  44 static void client_fatal(struct client *cl);
  45 static void connection_destroy(struct connection *co);
  46 static int client_prep_connection(struct client *cl);
  47 static void ingest_records(struct client *cl, Z_Records *r);
  48 static struct conf_retrievalprofile *database_retrieval_profile(struct database *db);
  49 void session_alert_watch(struct session *s, int what);
  50
  51 IOCHAN channel_list = 0;  // Master list of connections we're handling events to
  52
  53 static struct connection *connection_freelist = 0;
  54 static struct client *client_freelist = 0;
  55
  56 static struct host *hosts = 0;  // The hosts we know about
  57 static struct database *databases = 0; // The databases we know about
  58
  59 static char *client_states[] = {
  60     "Client_Connecting",
  61     "Client_Connected",
  62     "Client_Idle",
  63     "Client_Initializing",
  64     "Client_Searching",
  65     "Client_Presenting",
  66     "Client_Error",
  67     "Client_Failed",
  68     "Client_Disconnected",
  69     "Client_Stopped"
  70 };
  71
  72 // Note: Some things in this structure will eventually move to configuration
  73 struct parameters global_parameters =
  74 {
  75     "",
  76     "",
  77     0,
  78     0,
  79     30,
  80     "81",
  81     "Index Data PazPar2 (MasterKey)",
  82     VERSION,
  83     600, // 10 minutes
  84     60,
  85     100,
  86     MAX_CHUNK,
  87     0,
  88     0,
  89     0,
  90     0
  91 };
  92
  93 static int send_apdu(struct client *c, Z_APDU *a)
  94 {
  95     struct connection *co = c->connection;
  96     char *buf;
  97     int len, r;
  98
  99     if (!z_APDU(global_parameters.odr_out, &a, 0, 0))
 100     {
 101         odr_perror(global_parameters.odr_out, "Encoding APDU");
 102         abort();
 103     }
 104     buf = odr_getbuf(global_parameters.odr_out, &len, 0);
 105     r = cs_put(co->link, buf, len);
 106     if (r < 0)
 107     {
 108         yaz_log(YLOG_WARN, "cs_put: %s", cs_errmsg(cs_errno(co->link)));
 109         return -1;
 110     }
 111     else if (r == 1)
 112     {
 113         fprintf(stderr, "cs_put incomplete (ParaZ does not handle that)\n");
 114         exit(1);
 115     }
 116     odr_reset(global_parameters.odr_out); /* release the APDU structure  */
 117     co->state = Conn_Waiting;
 118     return 0;
 119 }
 120
 121
 122 static void send_init(IOCHAN i)
 123 {
 124     struct connection *co = iochan_getdata(i);
 125     struct client *cl = co->client;
 126     Z_APDU *a = zget_APDU(global_parameters.odr_out, Z_APDU_initRequest);
 127
 128     a->u.initRequest->implementationId = global_parameters.implementationId;
 129     a->u.initRequest->implementationName = global_parameters.implementationName;
 130     a->u.initRequest->implementationVersion =
 131         global_parameters.implementationVersion;
 132     ODR_MASK_SET(a->u.initRequest->options, Z_Options_search);
 133     ODR_MASK_SET(a->u.initRequest->options, Z_Options_present);
 134     ODR_MASK_SET(a->u.initRequest->options, Z_Options_namedResultSets);
 135
 136     ODR_MASK_SET(a->u.initRequest->protocolVersion, Z_ProtocolVersion_1);
 137     ODR_MASK_SET(a->u.initRequest->protocolVersion, Z_ProtocolVersion_2);
 138     ODR_MASK_SET(a->u.initRequest->protocolVersion, Z_ProtocolVersion_3);
 139     if (send_apdu(cl, a) >= 0)
 140     {
 141         iochan_setflags(i, EVENT_INPUT);
 142         cl->state = Client_Initializing;
 143     }
 144     else
 145         cl->state = Client_Error;
 146     odr_reset(global_parameters.odr_out);
 147 }
 148
 149 static void send_search(IOCHAN i)
 150 {
 151     struct connection *co = iochan_getdata(i);
 152     struct client *cl = co->client;
 153     struct session *se = cl->session;
 154     struct database *db = cl->database;
 155     Z_APDU *a = zget_APDU(global_parameters.odr_out, Z_APDU_searchRequest);
 156     int ndb, cerror, cpos;
 157     char **databaselist;
 158     Z_Query *zquery;
 159     struct ccl_rpn_node *cn;
 160     int ssub = 0, lslb = 100000, mspn = 10;
 161
 162     yaz_log(YLOG_DEBUG, "Sending search");
 163
 164     cn = ccl_find_str(global_parameters.ccl_filter, se->query, &cerror, &cpos);
 165     if (!cn)
 166         return;
 167     a->u.searchRequest->query = zquery = odr_malloc(global_parameters.odr_out,
 168             sizeof(Z_Query));
 169     zquery->which = Z_Query_type_1;
 170     zquery->u.type_1 = ccl_rpn_query(global_parameters.odr_out, cn);
 171     ccl_rpn_delete(cn);
 172
 173     for (ndb = 0; db->databases[ndb]; ndb++)
 174         ;
 175     databaselist = odr_malloc(global_parameters.odr_out, sizeof(char*) * ndb);
 176     for (ndb = 0; db->databases[ndb]; ndb++)
 177         databaselist[ndb] = db->databases[ndb];
 178
 179     a->u.presentRequest->preferredRecordSyntax =
 180             yaz_oidval_to_z3950oid(global_parameters.odr_out,
 181             CLASS_RECSYN, VAL_USMARC);
 182     a->u.searchRequest->smallSetUpperBound = &ssub;
 183     a->u.searchRequest->largeSetLowerBound = &lslb;
 184     a->u.searchRequest->mediumSetPresentNumber = &mspn;
 185     a->u.searchRequest->resultSetName = "Default";
 186     a->u.searchRequest->databaseNames = databaselist;
 187     a->u.searchRequest->num_databaseNames = ndb;
 188
 189     if (send_apdu(cl, a) >= 0)
 190     {
 191         iochan_setflags(i, EVENT_INPUT);
 192         cl->state = Client_Searching;
 193         cl->requestid = se->requestid;
 194     }
 195     else
 196         cl->state = Client_Error;
 197
 198     odr_reset(global_parameters.odr_out);
 199 }
 200
 201 static void send_present(IOCHAN i)
 202 {
 203     struct connection *co = iochan_getdata(i);
 204     struct client *cl = co->client;
 205     Z_APDU *a = zget_APDU(global_parameters.odr_out, Z_APDU_presentRequest);
 206     int toget;
 207     int start = cl->records + 1;
 208
 209     toget = global_parameters.chunk;
 210     if (toget > global_parameters.toget - cl->records)
 211         toget = global_parameters.toget - cl->records;
 212     if (toget > cl->hits - cl->records)
 213         toget = cl->hits - cl->records;
 214
 215     yaz_log(YLOG_DEBUG, "Trying to present %d records\n", toget);
 216
 217     a->u.presentRequest->resultSetStartPoint = &start;
 218     a->u.presentRequest->numberOfRecordsRequested = &toget;
 219
 220     a->u.presentRequest->resultSetId = "Default";
 221
 222     a->u.presentRequest->preferredRecordSyntax =
 223             yaz_oidval_to_z3950oid(global_parameters.odr_out,
 224             CLASS_RECSYN, VAL_USMARC);
 225
 226     if (send_apdu(cl, a) >= 0)
 227     {
 228         iochan_setflags(i, EVENT_INPUT);
 229         cl->state = Client_Presenting;
 230     }
 231     else
 232         cl->state = Client_Error;
 233     odr_reset(global_parameters.odr_out);
 234 }
 235
 236 static void do_initResponse(IOCHAN i, Z_APDU *a)
 237 {
 238     struct connection *co = iochan_getdata(i);
 239     struct client *cl = co->client;
 240     Z_InitResponse *r = a->u.initResponse;
 241
 242     yaz_log(YLOG_DEBUG, "Received init response");
 243
 244     if (*r->result)
 245     {
 246         cl->state = Client_Idle;
 247     }
 248     else
 249         cl->state = Client_Failed; // FIXME need to do something to the connection
 250 }
 251
 252 static void do_searchResponse(IOCHAN i, Z_APDU *a)
 253 {
 254     struct connection *co = iochan_getdata(i);
 255     struct client *cl = co->client;
 256     struct session *se = cl->session;
 257     Z_SearchResponse *r = a->u.searchResponse;
 258
 259     yaz_log(YLOG_DEBUG, "Searchresponse (status=%d)", *r->searchStatus);
 260
 261     if (*r->searchStatus)
 262     {
 263         cl->hits = *r->resultCount;
 264         se->total_hits += cl->hits;
 265         if (r->presentStatus && !*r->presentStatus && r->records)
 266         {
 267             yaz_log(YLOG_DEBUG, "Records in search response");
 268             cl->records += *r->numberOfRecordsReturned;
 269             ingest_records(cl, r->records);
 270         }
 271         cl->state = Client_Idle;
 272     }
 273     else
 274     {          /*"FAILED"*/
 275         cl->hits = 0;
 276         cl->state = Client_Error;
 277         if (r->records) {
 278             Z_Records *recs = r->records;
 279             if (recs->which == Z_Records_NSD)
 280             {
 281                 yaz_log(YLOG_WARN, "Non-surrogate diagnostic");
 282                 cl->diagnostic = *recs->u.nonSurrogateDiagnostic->condition;
 283                 cl->state = Client_Error;
 284             }
 285         }
 286     }
 287 }
 288
 289 char *normalize_mergekey(char *buf)
 290 {
 291     char *p = buf, *pout = buf;
 292
 293     while (*p)
 294     {
 295         while (*p && !isalnum(*p))
 296             p++;
 297         while (isalnum(*p))
 298             *(pout++) = tolower(*(p++));
 299         if (*p)
 300             *(pout++) = ' ';
 301         while (*p && !isalnum(*p))
 302             p++;
 303     }
 304     if (buf != pout)
 305         *pout = '\0';
 306
 307     return buf;
 308 }
 309
 310
 311 #ifdef GAGA
 312 // FIXME needs to be generalized. Should flexibly generate X lists per search
 313 static void extract_subject(struct session *s, const char *rec)
 314 {
 315     const char *field, *subfield;
 316
 317     while ((field = find_field(rec, "650")))
 318     {
 319         rec = field;
 320         if ((subfield = find_subfield(field, 'a')))
 321         {
 322             char *e, *ef;
 323             char buf[1024];
 324             int len;
 325
 326             ef = index(subfield, '\n');
 327             if (!ef)
 328                 return;
 329             if ((e = index(subfield, '\t')) && e < ef)
 330                 ef = e;
 331             while (ef > subfield && !isalpha(*(ef - 1)) && *(ef - 1) != ')')
 332                 ef--;
 333             len = ef - subfield;
 334             assert(len < 1023);
 335             memcpy(buf, subfield, len);
 336             buf[len] = '\0';
 337 #ifdef FIXME
 338             if (*buf)
 339                 termlist_insert(s->termlist, buf);
 340 #endif
 341         }
 342     }
 343 }
 344 #endif
 345
 346 static void add_facet(struct session *s, const char *type, const char *value)
 347 {
 348     int i;
 349
 350     for (i = 0; i < s->num_termlists; i++)
 351         if (!strcmp(s->termlists[i].name, type))
 352             break;
 353     if (i == s->num_termlists)
 354     {
 355         if (i == SESSION_MAX_TERMLISTS)
 356         {
 357             yaz_log(YLOG_FATAL, "Too many termlists");
 358             exit(1);
 359         }
 360         s->termlists[i].name = nmem_strdup(s->nmem, type);
 361         s->termlists[i].termlist = termlist_create(s->nmem, s->expected_maxrecs, 15);
 362         s->num_termlists = i + 1;
 363     }
 364     termlist_insert(s->termlists[i].termlist, value);
 365 }
 366
 367 int yaz_marc_write_xml();
 368
 369 static xmlDoc *normalize_record(struct client *cl, Z_External *rec)
 370 {
 371     struct conf_retrievalprofile *rprofile = cl->database->rprofile;
 372     struct conf_retrievalmap *m;
 373     xmlNode *res;
 374     xmlDoc *rdoc;
 375
 376     // First normalize to XML
 377     if (rprofile->native_syntax == Nativesyn_iso2709)
 378     {
 379         char *buf;
 380         int len;
 381         if (rec->which != Z_External_octet)
 382         {
 383             yaz_log(YLOG_WARN, "Unexpected external branch, probably BER");
 384             return 0;
 385         }
 386         buf = (char*) rec->u.octet_aligned->buf;
 387         len = rec->u.octet_aligned->len;
 388         if (yaz_marc_read_iso2709(rprofile->yaz_marc, buf, len) < 0)
 389         {
 390             yaz_log(YLOG_WARN, "Failed to decode MARC");
 391             return 0;
 392         }
 393         if (yaz_marc_write_xml(rprofile->yaz_marc, &res,
 394                     "http://www.loc.gov/MARC21/slim", 0, 0) < 0)
 395         {
 396             yaz_log(YLOG_WARN, "Failed to encode as XML");
 397             return 0;
 398         }
 399         rdoc = xmlNewDoc("1.0");
 400         xmlDocSetRootElement(rdoc, res);
 401     }
 402     else
 403     {
 404         yaz_log(YLOG_FATAL, "Unknown native_syntax in normalize_record");
 405         exit(1);
 406     }
 407     for (m = rprofile->maplist; m; m = m->next)
 408     {
 409         xmlDoc *new;
 410         if (m->type != Map_xslt)
 411         {
 412             yaz_log(YLOG_WARN, "Unknown map type");
 413             return 0;
 414         }
 415         if (!(new = xsltApplyStylesheet(m->stylesheet, rdoc, 0)))
 416         {
 417             yaz_log(YLOG_WARN, "XSLT transformation failed");
 418             return 0;
 419         }
 420         xmlFreeDoc(rdoc);
 421         rdoc = new;
 422     }
 423     if (global_parameters.dump_records)
 424     {
 425         fprintf(stderr, "Record:\n----------------\n");
 426 #if LIBXML_VERSION >= 20600
 427         xmlDocFormatDump(stderr, rdoc, 1);
 428 #else
 429         xmlDocDump(stderr, rdoc);
 430 #endif
 431     }
 432     return rdoc;
 433 }
 434
 435 // Extract what appears to be years from buf, storing highest and
 436 // lowest values.
 437 static int extract_years(const char *buf, int *first, int *last)
 438 {
 439     *first = -1;
 440     *last = -1;
 441     while (*buf)
 442     {
 443         const char *e;
 444         int len;
 445
 446         while (*buf && !isdigit(*buf))
 447             buf++;
 448         len = 0;
 449         for (e = buf; *e && isdigit(*e); e++)
 450             len++;
 451         if (len == 4)
 452         {
 453             int value = atoi(buf);
 454             if (*first < 0 || value < *first)
 455                 *first = value;
 456             if (*last < 0 || value > *last)
 457                 *last = value;
 458         }
 459         buf = e;
 460     }
 461     return *first;
 462 }
 463
 464 static struct record *ingest_record(struct client *cl, Z_External *rec)
 465 {
 466     xmlDoc *xdoc = normalize_record(cl, rec);
 467     xmlNode *root, *n;
 468     struct record *res;
 469     struct record_cluster *cluster;
 470     struct session *se = cl->session;
 471     xmlChar *mergekey, *mergekey_norm;
 472     xmlChar *type;
 473     xmlChar *value;
 474     struct conf_service *service = global_parameters.server->service;
 475
 476     if (!xdoc)
 477         return 0;
 478
 479     root = xmlDocGetRootElement(xdoc);
 480     if (!(mergekey = xmlGetProp(root, "mergekey")))
 481     {
 482         yaz_log(YLOG_WARN, "No mergekey found in record");
 483         xmlFreeDoc(xdoc);
 484         return 0;
 485     }
 486
 487     res = nmem_malloc(se->nmem, sizeof(struct record));
 488     res->next = 0;
 489     res->metadata = nmem_malloc(se->nmem,
 490             sizeof(struct record_metadata*) * service->num_metadata);
 491     memset(res->metadata, 0, sizeof(struct record_metadata*) * service->num_metadata);
 492
 493     mergekey_norm = nmem_strdup(se->nmem, (char*) mergekey);
 494     xmlFree(mergekey);
 495     normalize_mergekey(mergekey_norm);
 496
 497     cluster = reclist_insert(se->reclist, res, mergekey_norm, &se->total_merged);
 498     if (!cluster)
 499     {
 500         /* no room for record */
 501         xmlFreeDoc(xdoc);
 502         return 0;
 503     }
 504     relevance_newrec(se->relevance, cluster);
 505
 506     type = value = 0;
 507     for (n = root->children; n; n = n->next)
 508     {
 509         if (type)
 510             xmlFree(type);
 511         if (value)
 512             xmlFree(value);
 513         type = value = 0;
 514
 515         if (n->type != XML_ELEMENT_NODE)
 516             continue;
 517         if (!strcmp(n->name, "metadata"))
 518         {
 519             struct conf_metadata *md = 0;
 520             struct record_metadata **wheretoput, *newm;
 521             int imeta;
 522             int first, last;
 523
 524             type = xmlGetProp(n, "type");
 525             value = xmlNodeListGetString(xdoc, n->children, 0);
 526             // First, find out what field we're looking at
 527             for (imeta = 0; imeta < service->num_metadata; imeta++)
 528                 if (!strcmp(type, service->metadata[imeta].name))
 529                 {
 530                     md = &service->metadata[imeta];
 531                     break;
 532                 }
 533             if (!md)
 534             {
 535                 yaz_log(YLOG_WARN, "Ignoring unknown metadata element: %s", type);
 536                 continue;
 537             }
 538
 539             // Find out where we are putting it
 540             if (md->merge == Metadata_merge_no)
 541                 wheretoput = &res->metadata[imeta];
 542             else
 543                 wheretoput = &cluster->metadata[imeta];
 544
 545             // Put it there
 546             newm = nmem_malloc(se->nmem, sizeof(struct record_metadata));
 547             newm->next = 0;
 548             if (md->type == Metadata_type_generic)
 549             {
 550                 newm->data.text = nmem_strdup(se->nmem, value);
 551             }
 552             else if (md->type == Metadata_type_year)
 553             {
 554                 if (extract_years(value, &first, &last) < 0)
 555                     continue;
 556             }
 557             else
 558             {
 559                 yaz_log(YLOG_WARN, "Unknown type in metadata element %s", type);
 560                 continue;
 561             }
 562             if (md->type == Metadata_type_year && md->merge != Metadata_merge_range)
 563             {
 564                 yaz_log(YLOG_WARN, "Only range merging supported for years");
 565                 continue;
 566             }
 567             if (md->merge == Metadata_merge_unique)
 568             {
 569                 struct record_metadata *mnode;
 570                 for (mnode = *wheretoput; mnode; mnode = mnode->next)
 571                     if (!strcmp(mnode->data.text, mnode->data.text))
 572                         break;
 573                 if (!mnode)
 574                 {
 575                     newm->next = *wheretoput;
 576                     *wheretoput = newm;
 577                 }
 578             }
 579             else if (md->merge == Metadata_merge_longest)
 580             {
 581                 if (!*wheretoput ||
 582                         strlen(newm->data.text) > strlen((*wheretoput)->data.text))
 583                 *wheretoput = newm;
 584             }
 585             else if (md->merge == Metadata_merge_all || md->merge == Metadata_merge_no)
 586             {
 587                 newm->next = *wheretoput;
 588                 *wheretoput = newm;
 589             }
 590             else if (md->merge == Metadata_merge_range)
 591             {
 592                 assert(md->type == Metadata_type_year);
 593                 if (!*wheretoput)
 594                 {
 595                     *wheretoput = newm;
 596                     (*wheretoput)->data.year.year1 = first;
 597                     (*wheretoput)->data.year.year2 = last;
 598                 }
 599                 else
 600                 {
 601                     if (first < (*wheretoput)->data.year.year1)
 602                         (*wheretoput)->data.year.year1 = first;
 603                     if (last > (*wheretoput)->data.year.year2)
 604                         (*wheretoput)->data.year.year2 = last;
 605                 }
 606             }
 607             else
 608                 yaz_log(YLOG_WARN, "Don't know how to merge on element name %s", md->name);
 609
 610             if (md->rank)
 611                 relevance_countwords(se->relevance, cluster, value, md->rank);
 612             if (md->termlist)
 613                 add_facet(se, type, value);
 614             xmlFree(type);
 615             xmlFree(value);
 616             type = value = 0;
 617         }
 618         else
 619             yaz_log(YLOG_WARN, "Unexpected element %s in internal record", n->name);
 620     }
 621
 622     xmlFreeDoc(xdoc);
 623
 624     relevance_donerecord(se->relevance, cluster);
 625     se->total_records++;
 626
 627     return res;
 628 }
 629
 630 static void ingest_records(struct client *cl, Z_Records *r)
 631 {
 632 #if USE_TIMING
 633     yaz_timing_t t = yaz_timing_create();
 634 #endif
 635     struct record *rec;
 636     struct session *s = cl->session;
 637     Z_NamePlusRecordList *rlist;
 638     int i;
 639
 640     if (r->which != Z_Records_DBOSD)
 641         return;
 642     rlist = r->u.databaseOrSurDiagnostics;
 643     for (i = 0; i < rlist->num_records; i++)
 644     {
 645         Z_NamePlusRecord *npr = rlist->records[i];
 646
 647         if (npr->which != Z_NamePlusRecord_databaseRecord)
 648         {
 649             yaz_log(YLOG_WARN, "Unexpected record type, probably diagnostic");
 650             continue;
 651         }
 652
 653         rec = ingest_record(cl, npr->u.databaseRecord);
 654         if (!rec)
 655             continue;
 656     }
 657     if (s->watchlist[SESSION_WATCH_RECORDS].fun && rlist->num_records)
 658         session_alert_watch(s, SESSION_WATCH_RECORDS);
 659
 660 #if USE_TIMING
 661     yaz_timing_stop(t);
 662     yaz_log(YLOG_LOG, "ingest_records %6.5f %3.2f %3.2f",
 663             yaz_timing_get_real(t), yaz_timing_get_user(t),
 664             yaz_timing_get_sys(t));
 665     yaz_timing_destroy(&t);
 666 #endif
 667 }
 668
 669 static void do_presentResponse(IOCHAN i, Z_APDU *a)
 670 {
 671     struct connection *co = iochan_getdata(i);
 672     struct client *cl = co->client;
 673     Z_PresentResponse *r = a->u.presentResponse;
 674
 675     if (r->records) {
 676         Z_Records *recs = r->records;
 677         if (recs->which == Z_Records_NSD)
 678         {
 679             yaz_log(YLOG_WARN, "Non-surrogate diagnostic");
 680             cl->diagnostic = *recs->u.nonSurrogateDiagnostic->condition;
 681             cl->state = Client_Error;
 682         }
 683     }
 684
 685     if (!*r->presentStatus && cl->state != Client_Error)
 686     {
 687         yaz_log(YLOG_DEBUG, "Good Present response");
 688         cl->records += *r->numberOfRecordsReturned;
 689         ingest_records(cl, r->records);
 690         cl->state = Client_Idle;
 691     }
 692     else if (*r->presentStatus)
 693     {
 694         yaz_log(YLOG_WARN, "Bad Present response");
 695         cl->state = Client_Error;
 696     }
 697 }
 698
 699 static void handler(IOCHAN i, int event)
 700 {
 701     struct connection *co = iochan_getdata(i);
 702     struct client *cl = co->client;
 703     struct session *se = 0;
 704
 705     if (cl)
 706         se = cl->session;
 707     else
 708     {
 709         yaz_log(YLOG_WARN, "Destroying orphan connection");
 710         connection_destroy(co);
 711         return;
 712     }
 713
 714     if (co->state == Conn_Connecting && event & EVENT_OUTPUT)
 715     {
 716         int errcode;
 717         socklen_t errlen = sizeof(errcode);
 718
 719         if (getsockopt(cs_fileno(co->link), SOL_SOCKET, SO_ERROR, &errcode,
 720             &errlen) < 0 || errcode != 0)
 721         {
 722             client_fatal(cl);
 723             return;
 724         }
 725         else
 726         {
 727             yaz_log(YLOG_DEBUG, "Connect OK");
 728             co->state = Conn_Open;
 729             if (cl)
 730                 cl->state = Client_Connected;
 731         }
 732     }
 733
 734     else if (event & EVENT_INPUT)
 735     {
 736         int len = cs_get(co->link, &co->ibuf, &co->ibufsize);
 737
 738         if (len < 0)
 739         {
 740             yaz_log(YLOG_WARN|YLOG_ERRNO, "Error reading from Z server");
 741             connection_destroy(co);
 742             return;
 743         }
 744         else if (len == 0)
 745         {
 746             yaz_log(YLOG_WARN, "EOF reading from Z server");
 747             connection_destroy(co);
 748             return;
 749         }
 750         else if (len > 1) // We discard input if we have no connection
 751         {
 752             co->state = Conn_Open;
 753
 754             if (cl && (cl->requestid == se->requestid || cl->state == Client_Initializing))
 755             {
 756                 Z_APDU *a;
 757
 758                 odr_reset(global_parameters.odr_in);
 759                 odr_setbuf(global_parameters.odr_in, co->ibuf, len, 0);
 760                 if (!z_APDU(global_parameters.odr_in, &a, 0, 0))
 761                 {
 762                     client_fatal(cl);
 763                     return;
 764                 }
 765                 switch (a->which)
 766                 {
 767                     case Z_APDU_initResponse:
 768                         do_initResponse(i, a);
 769                         break;
 770                     case Z_APDU_searchResponse:
 771                         do_searchResponse(i, a);
 772                         break;
 773                     case Z_APDU_presentResponse:
 774                         do_presentResponse(i, a);
 775                         break;
 776                     default:
 777                         yaz_log(YLOG_WARN, "Unexpected result from server");
 778                         client_fatal(cl);
 779                         return;
 780                 }
 781                 // We aren't expecting staggered output from target
 782                 // if (cs_more(t->link))
 783                 //    iochan_setevent(i, EVENT_INPUT);
 784             }
 785             else  // we throw away response and go to idle mode
 786             {
 787                 yaz_log(YLOG_DEBUG, "Ignoring result of expired operation");
 788                 cl->state = Client_Idle;
 789             }
 790         }
 791         /* if len==1 we do nothing but wait for more input */
 792     }
 793
 794     if (cl->state == Client_Connected) {
 795         send_init(i);
 796     }
 797
 798     if (cl->state == Client_Idle)
 799     {
 800         if (cl->requestid != se->requestid && *se->query) {
 801             send_search(i);
 802         }
 803         else if (cl->hits > 0 && cl->records < global_parameters.toget &&
 804             cl->records < cl->hits) {
 805             send_present(i);
 806         }
 807     }
 808 }
 809
 810 // Disassociate connection from client
 811 static void connection_release(struct connection *co)
 812 {
 813     struct client *cl = co->client;
 814
 815     yaz_log(YLOG_DEBUG, "Connection release %s", co->host->hostport);
 816     if (!cl)
 817         return;
 818     cl->connection = 0;
 819     co->client = 0;
 820 }
 821
 822 // Close connection and recycle structure
 823 static void connection_destroy(struct connection *co)
 824 {
 825     struct host *h = co->host;
 826     cs_close(co->link);
 827     iochan_destroy(co->iochan);
 828
 829     yaz_log(YLOG_DEBUG, "Connection destroy %s", co->host->hostport);
 830     if (h->connections == co)
 831         h->connections = co->next;
 832     else
 833     {
 834         struct connection *pco;
 835         for (pco = h->connections; pco && pco->next != co; pco = pco->next)
 836             ;
 837         if (pco)
 838             pco->next = co->next;
 839         else
 840             abort();
 841     }
 842     if (co->client)
 843     {
 844         if (co->client->state != Client_Idle)
 845             co->client->state = Client_Disconnected;
 846         co->client->connection = 0;
 847     }
 848     co->next = connection_freelist;
 849     connection_freelist = co;
 850 }
 851
 852 // Creates a new connection for client, associated with the host of
 853 // client's database
 854 static struct connection *connection_create(struct client *cl)
 855 {
 856     struct connection *new;
 857     COMSTACK link;
 858     int res;
 859     void *addr;
 860
 861     yaz_log(YLOG_DEBUG, "Connection create %s", cl->database->url);
 862     if (!(link = cs_create(tcpip_type, 0, PROTO_Z3950)))
 863     {
 864         yaz_log(YLOG_FATAL|YLOG_ERRNO, "Failed to create comstack");
 865         exit(1);
 866     }
 867
 868     if (!(addr = cs_straddr(link, cl->database->host->ipport)))
 869     {
 870         yaz_log(YLOG_WARN|YLOG_ERRNO, "Lookup of IP address %s failed?",
 871             cl->database->host->ipport);
 872         return 0;
 873     }
 874
 875     res = cs_connect(link, addr);
 876     if (res < 0)
 877     {
 878         yaz_log(YLOG_WARN|YLOG_ERRNO, "cs_connect %s", cl->database->url);
 879         return 0;
 880     }
 881
 882     if ((new = connection_freelist))
 883         connection_freelist = new->next;
 884     else
 885     {
 886         new = xmalloc(sizeof (struct connection));
 887         new->ibuf = 0;
 888         new->ibufsize = 0;
 889     }
 890     new->state = Conn_Connecting;
 891     new->host = cl->database->host;
 892     new->next = new->host->connections;
 893     new->host->connections = new;
 894     new->client = cl;
 895     cl->connection = new;
 896     new->link = link;
 897
 898     new->iochan = iochan_create(cs_fileno(link), handler, 0);
 899     iochan_setdata(new->iochan, new);
 900     new->iochan->next = channel_list;
 901     channel_list = new->iochan;
 902     return new;
 903 }
 904
 905 // Close connection and set state to error
 906 static void client_fatal(struct client *cl)
 907 {
 908     yaz_log(YLOG_WARN, "Fatal error from %s", cl->database->url);
 909     connection_destroy(cl->connection);
 910     cl->state = Client_Error;
 911 }
 912
 913 // Ensure that client has a connection associated
 914 static int client_prep_connection(struct client *cl)
 915 {
 916     struct connection *co;
 917     struct session *se = cl->session;
 918     struct host *host = cl->database->host;
 919
 920     co = cl->connection;
 921
 922     yaz_log(YLOG_DEBUG, "Client prep %s", cl->database->url);
 923
 924     if (!co)
 925     {
 926         // See if someone else has an idle connection
 927         // We should look at timestamps here to select the longest-idle connection
 928         for (co = host->connections; co; co = co->next)
 929             if (co->state == Conn_Open && (!co->client || co->client->session != se))
 930                 break;
 931         if (co)
 932         {
 933             connection_release(co);
 934             cl->connection = co;
 935             co->client = cl;
 936         }
 937         else
 938             co = connection_create(cl);
 939     }
 940     if (co)
 941     {
 942         if (co->state == Conn_Connecting)
 943         {
 944             cl->state = Client_Connecting;
 945             iochan_setflag(co->iochan, EVENT_OUTPUT);
 946         }
 947         else if (co->state == Conn_Open)
 948         {
 949             if (cl->state == Client_Error || cl->state == Client_Disconnected)
 950                 cl->state = Client_Idle;
 951             iochan_setflag(co->iochan, EVENT_OUTPUT);
 952         }
 953         return 1;
 954     }
 955     else
 956         return 0;
 957 }
 958
 959 // This function will most likely vanish when a proper target profile mechanism is
 960 // introduced.
 961 void load_simpletargets(const char *fn)
 962 {
 963     FILE *f = fopen(fn, "r");
 964     char line[256];
 965
 966     if (!f)
 967     {
 968         yaz_log(YLOG_WARN|YLOG_ERRNO, "open %s", fn);
 969         exit(1);
 970     }
 971
 972     while (fgets(line, 255, f))
 973     {
 974         char *url, *db;
 975         struct host *host;
 976         struct database *database;
 977
 978         if (strncmp(line, "target ", 7))
 979             continue;
 980         url = line + 7;
 981         url[strlen(url) - 1] = '\0';
 982         yaz_log(YLOG_DEBUG, "Target: %s", url);
 983         if ((db = strchr(url, '/')))
 984             *(db++) = '\0';
 985         else
 986             db = "Default";
 987
 988         for (host = hosts; host; host = host->next)
 989             if (!strcmp(url, host->hostport))
 990                 break;
 991         if (!host)
 992         {
 993             struct addrinfo *addrinfo, hints;
 994             char *port;
 995             char ipport[128];
 996             unsigned char addrbuf[4];
 997             int res;
 998
 999             host = xmalloc(sizeof(struct host));
1000             host->hostport = xstrdup(url);
1001             host->connections = 0;
1002
1003             if ((port = strchr(url, ':')))
1004                 *(port++) = '\0';
1005             else
1006                 port = "210";
1007
1008             hints.ai_flags = 0;
1009             hints.ai_family = PF_INET;
1010             hints.ai_socktype = SOCK_STREAM;
1011             hints.ai_protocol = IPPROTO_TCP;
1012             hints.ai_addrlen = 0;
1013             hints.ai_addr = 0;
1014             hints.ai_canonname = 0;
1015             hints.ai_next = 0;
1016             // This is not robust code. It assumes that getaddrinfo returns AF_INET
1017             // address.
1018             if ((res = getaddrinfo(url, port, &hints, &addrinfo)))
1019             {
1020                 yaz_log(YLOG_WARN, "Failed to resolve %s: %s", url, gai_strerror(res));
1021                 xfree(host->hostport);
1022                 xfree(host);
1023                 continue;
1024             }
1025             assert(addrinfo->ai_family == PF_INET);
1026             memcpy(addrbuf, &((struct sockaddr_in*)addrinfo->ai_addr)->sin_addr.s_addr, 4);
1027             sprintf(ipport, "%u.%u.%u.%u:%s",
1028                     addrbuf[0], addrbuf[1], addrbuf[2], addrbuf[3], port);
1029             host->ipport = xstrdup(ipport);
1030             freeaddrinfo(addrinfo);
1031             host->next = hosts;
1032             hosts = host;
1033         }
1034         database = xmalloc(sizeof(struct database));
1035         database->host = host;
1036         database->url = xmalloc(strlen(url) + strlen(db) + 2);
1037         strcpy(database->url, url);
1038         strcat(database->url, "/");
1039         strcat(database->url, db);
1040
1041         database->databases = xmalloc(2 * sizeof(char *));
1042         database->databases[0] = xstrdup(db);
1043         database->databases[1] = 0;
1044         database->errors = 0;
1045         database->qprofile = 0;
1046         database->rprofile = database_retrieval_profile(database);
1047         database->next = databases;
1048         databases = database;
1049
1050     }
1051     fclose(f);
1052 }
1053
1054 static void pull_terms(NMEM nmem, struct ccl_rpn_node *n, char **termlist, int *num)
1055 {
1056     switch (n->kind)
1057     {
1058         case CCL_RPN_AND:
1059         case CCL_RPN_OR:
1060         case CCL_RPN_NOT:
1061         case CCL_RPN_PROX:
1062             pull_terms(nmem, n->u.p[0], termlist, num);
1063             pull_terms(nmem, n->u.p[1], termlist, num);
1064             break;
1065         case CCL_RPN_TERM:
1066             termlist[(*num)++] = nmem_strdup(nmem, n->u.t.term);
1067             break;
1068         default: // NOOP
1069             break;
1070     }
1071 }
1072
1073 // Extract terms from query into null-terminated termlist
1074 static int extract_terms(NMEM nmem, char *query, char **termlist)
1075 {
1076     int error, pos;
1077     struct ccl_rpn_node *n;
1078     int num = 0;
1079
1080     n = ccl_find_str(global_parameters.ccl_filter, query, &error, &pos);
1081     if (!n)
1082         return -1;
1083     pull_terms(nmem, n, termlist, &num);
1084     termlist[num] = 0;
1085     ccl_rpn_delete(n);
1086     return 0;
1087 }
1088
1089 static struct client *client_create(void)
1090 {
1091     struct client *r;
1092     if (client_freelist)
1093     {
1094         r = client_freelist;
1095         client_freelist = client_freelist->next;
1096     }
1097     else
1098         r = xmalloc(sizeof(struct client));
1099     r->database = 0;
1100     r->connection = 0;
1101     r->session = 0;
1102     r->hits = 0;
1103     r->records = 0;
1104     r->setno = 0;
1105     r->requestid = -1;
1106     r->diagnostic = 0;
1107     r->state = Client_Disconnected;
1108     r->next = 0;
1109     return r;
1110 }
1111
1112 void client_destroy(struct client *c)
1113 {
1114     struct session *se = c->session;
1115     if (c == se->clients)
1116         se->clients = c->next;
1117     else
1118     {
1119         struct client *cc;
1120         for (cc = se->clients; cc && cc->next != c; cc = cc->next)
1121             ;
1122         if (cc)
1123             cc->next = c->next;
1124     }
1125     if (c->connection)
1126         connection_release(c->connection);
1127     c->next = client_freelist;
1128     client_freelist = c;
1129 }
1130
1131 void session_set_watch(struct session *s, int what, session_watchfun fun, void *data)
1132 {
1133     s->watchlist[what].fun = fun;
1134     s->watchlist[what].data = data;
1135 }
1136
1137 void session_alert_watch(struct session *s, int what)
1138 {
1139     if (!s->watchlist[what].fun)
1140         return;
1141     (*s->watchlist[what].fun)(s->watchlist[what].data);
1142     s->watchlist[what].fun = 0;
1143     s->watchlist[what].data = 0;
1144 }
1145
1146 // This needs to be extended with selection criteria
1147 static struct conf_retrievalprofile *database_retrieval_profile(struct database *db)
1148 {
1149     if (!config)
1150     {
1151         yaz_log(YLOG_FATAL, "Must load configuration (-f)");
1152         exit(1);
1153     }
1154     if (!config->retrievalprofiles)
1155     {
1156         yaz_log(YLOG_FATAL, "No retrieval profiles defined");
1157     }
1158     return config->retrievalprofiles;
1159 }
1160
1161 // This should be extended with parameters to control selection criteria
1162 // Associates a set of clients with a session;
1163 int select_targets(struct session *se)
1164 {
1165     struct database *db;
1166     int c = 0;
1167
1168     while (se->clients)
1169         client_destroy(se->clients);
1170     for (db = databases; db; db = db->next)
1171     {
1172         struct client *cl = client_create();
1173         cl->database = db;
1174         cl->session = se;
1175         cl->next = se->clients;
1176         se->clients = cl;
1177         c++;
1178     }
1179     return c;
1180 }
1181
1182 int session_active_clients(struct session *s)
1183 {
1184     struct client *c;
1185     int res = 0;
1186
1187     for (c = s->clients; c; c = c->next)
1188         if (c->connection && (c->state == Client_Connecting ||
1189                     c->state == Client_Initializing ||
1190                     c->state == Client_Searching ||
1191                     c->state == Client_Presenting))
1192             res++;
1193
1194     return res;
1195 }
1196
1197 char *search(struct session *se, char *query)
1198 {
1199     int live_channels = 0;
1200     struct client *cl;
1201
1202     yaz_log(YLOG_DEBUG, "Search");
1203
1204     strcpy(se->query, query);
1205     se->requestid++;
1206     nmem_reset(se->nmem);
1207     for (cl = se->clients; cl; cl = cl->next)
1208     {
1209         cl->hits = -1;
1210         cl->records = 0;
1211         cl->diagnostic = 0;
1212
1213         if (client_prep_connection(cl))
1214             live_channels++;
1215     }
1216     if (live_channels)
1217     {
1218         char *p[512];
1219         int maxrecs = live_channels * global_parameters.toget;
1220         se->num_termlists = 0;
1221         se->reclist = reclist_create(se->nmem, maxrecs);
1222         extract_terms(se->nmem, query, p);
1223         se->relevance = relevance_create(se->nmem, (const char **) p, maxrecs);
1224         se->total_records = se->total_hits = se->total_merged = 0;
1225         se->expected_maxrecs = maxrecs;
1226     }
1227     else
1228         return "NOTARGETS";
1229
1230     return 0;
1231 }
1232
1233 void destroy_session(struct session *s)
1234 {
1235     yaz_log(YLOG_LOG, "Destroying session");
1236     while (s->clients)
1237         client_destroy(s->clients);
1238     nmem_destroy(s->nmem);
1239     wrbuf_free(s->wrbuf, 1);
1240 }
1241
1242 struct session *new_session()
1243 {
1244     int i;
1245     struct session *session = xmalloc(sizeof(*session));
1246
1247     yaz_log(YLOG_DEBUG, "New pazpar2 session");
1248
1249     session->total_hits = 0;
1250     session->total_records = 0;
1251     session->num_termlists = 0;
1252     session->reclist = 0;
1253     session->requestid = -1;
1254     session->clients = 0;
1255     session->expected_maxrecs = 0;
1256     session->query[0] = '\0';
1257     session->nmem = nmem_create();
1258     session->wrbuf = wrbuf_alloc();
1259     for (i = 0; i <= SESSION_WATCH_MAX; i++)
1260     {
1261         session->watchlist[i].data = 0;
1262         session->watchlist[i].fun = 0;
1263     }
1264
1265     select_targets(session);
1266
1267     return session;
1268 }
1269
1270 struct hitsbytarget *hitsbytarget(struct session *se, int *count)
1271 {
1272     static struct hitsbytarget res[1000]; // FIXME MM
1273     struct client *cl;
1274
1275     *count = 0;
1276     for (cl = se->clients; cl; cl = cl->next)
1277     {
1278         strcpy(res[*count].id, cl->database->host->hostport);
1279         res[*count].hits = cl->hits;
1280         res[*count].records = cl->records;
1281         res[*count].diagnostic = cl->diagnostic;
1282         res[*count].state = client_states[cl->state];
1283         res[*count].connected  = cl->connection ? 1 : 0;
1284         (*count)++;
1285     }
1286
1287     return res;
1288 }
1289
1290 struct termlist_score **termlist(struct session *s, const char *name, int *num)
1291 {
1292     int i;
1293
1294     for (i = 0; i < s->num_termlists; i++)
1295         if (!strcmp(s->termlists[i].name, name))
1296             return termlist_highscore(s->termlists[i].termlist, num);
1297     return 0;
1298 }
1299
1300 #ifdef MISSING_HEADERS
1301 void report_nmem_stats(void)
1302 {
1303     size_t in_use, is_free;
1304
1305     nmem_get_memory_in_use(&in_use);
1306     nmem_get_memory_free(&is_free);
1307
1308     yaz_log(YLOG_LOG, "nmem stat: use=%ld free=%ld",
1309             (long) in_use, (long) is_free);
1310 }
1311 #endif
1312
1313 struct record_cluster *show_single(struct session *s, int id)
1314 {
1315     struct record_cluster *r;
1316
1317     reclist_rewind(s->reclist);
1318     while ((r = reclist_read_record(s->reclist)))
1319         if (r->recid == id)
1320             return r;
1321     return 0;
1322 }
1323
1324 struct record_cluster **show(struct session *s, int start, int *num, int *total,
1325                      int *sumhits, NMEM nmem_show)
1326 {
1327     struct record_cluster **recs = nmem_malloc(nmem_show, *num
1328                                        * sizeof(struct record_cluster *));
1329     int i;
1330 #if USE_TIMING
1331     yaz_timing_t t = yaz_timing_create();
1332 #endif
1333     relevance_prepare_read(s->relevance, s->reclist);
1334
1335     *total = s->reclist->num_records;
1336     *sumhits = s->total_hits;
1337
1338     for (i = 0; i < start; i++)
1339         if (!reclist_read_record(s->reclist))
1340         {
1341             *num = 0;
1342             recs = 0;
1343             break;
1344         }
1345
1346     for (i = 0; i < *num; i++)
1347     {
1348         struct record_cluster *r = reclist_read_record(s->reclist);
1349         if (!r)
1350         {
1351             *num = i;
1352             break;
1353         }
1354         recs[i] = r;
1355     }
1356 #if USE_TIMING
1357     yaz_timing_stop(t);
1358     yaz_log(YLOG_LOG, "show %6.5f %3.2f %3.2f",
1359             yaz_timing_get_real(t), yaz_timing_get_user(t),
1360             yaz_timing_get_sys(t));
1361     yaz_timing_destroy(&t);
1362 #endif
1363     return recs;
1364 }
1365
1366 void statistics(struct session *se, struct statistics *stat)
1367 {
1368     struct client *cl;
1369     int count = 0;
1370
1371     memset(stat, 0, sizeof(*stat));
1372     for (cl = se->clients; cl; cl = cl->next)
1373     {
1374         if (!cl->connection)
1375             stat->num_no_connection++;
1376         switch (cl->state)
1377         {
1378             case Client_Connecting: stat->num_connecting++; break;
1379             case Client_Initializing: stat->num_initializing++; break;
1380             case Client_Searching: stat->num_searching++; break;
1381             case Client_Presenting: stat->num_presenting++; break;
1382             case Client_Idle: stat->num_idle++; break;
1383             case Client_Failed: stat->num_failed++; break;
1384             case Client_Error: stat->num_error++; break;
1385             default: break;
1386         }
1387         count++;
1388     }
1389     stat->num_hits = se->total_hits;
1390     stat->num_records = se->total_records;
1391
1392     stat->num_clients = count;
1393 }
1394
1395 static CCL_bibset load_cclfile(const char *fn)
1396 {
1397     CCL_bibset res = ccl_qual_mk();
1398     if (ccl_qual_fname(res, fn) < 0)
1399     {
1400         yaz_log(YLOG_FATAL|YLOG_ERRNO, "%s", fn);
1401         exit(1);
1402     }
1403     return res;
1404 }
1405
1406 static void start_http_listener(void)
1407 {
1408     char hp[128] = "";
1409     struct conf_server *ser = global_parameters.server;
1410
1411     if (*global_parameters.listener_override)
1412         strcpy(hp, global_parameters.listener_override);
1413     else
1414     {
1415         strcpy(hp, ser->host ? ser->host : "");
1416         if (ser->port)
1417         {
1418             if (*hp)
1419                 strcat(hp, ":");
1420             sprintf(hp + strlen(hp), "%d", ser->port);
1421         }
1422     }
1423     http_init(hp);
1424 }
1425
1426 static void start_proxy(void)
1427 {
1428     char hp[128] = "";
1429     struct conf_server *ser = global_parameters.server;
1430
1431     if (*global_parameters.proxy_override)
1432         strcpy(hp, global_parameters.proxy_override);
1433     else if (ser->proxy_host || ser->proxy_port)
1434     {
1435         strcpy(hp, ser->proxy_host ? ser->proxy_host : "");
1436         if (ser->proxy_port)
1437         {
1438             if (*hp)
1439                 strcat(hp, ":");
1440             sprintf(hp + strlen(hp), "%d", ser->proxy_port);
1441         }
1442     }
1443     else
1444         return;
1445
1446     http_set_proxyaddr(hp);
1447 }
1448
1449 int main(int argc, char **argv)
1450 {
1451     int ret;
1452     char *arg;
1453
1454     if (signal(SIGPIPE, SIG_IGN) == SIG_ERR)
1455         yaz_log(YLOG_WARN|YLOG_ERRNO, "signal");
1456
1457     yaz_log_init(YLOG_DEFAULT_LEVEL, "pazpar2", 0);
1458
1459     while ((ret = options("f:x:h:p:C:s:d", argv, argc, &arg)) != -2)
1460     {
1461         switch (ret) {
1462             case 'f':
1463                 if (!read_config(arg))
1464                     exit(1);
1465                 break;
1466             case 'h':
1467                 strcpy(global_parameters.listener_override, arg);
1468                 break;
1469             case 'C':
1470                 global_parameters.ccl_filter = load_cclfile(arg);
1471                 break;
1472             case 'p':
1473                 strcpy(global_parameters.proxy_override, arg);
1474                 break;
1475             case 's':
1476                 load_simpletargets(arg);
1477                 break;
1478             case 'd':
1479                 global_parameters.dump_records = 1;
1480                 break;
1481             default:
1482                 fprintf(stderr, "Usage: pazpar2\n"
1483                         "    -f configfile\n"
1484                         "    -h [host:]port          (REST protocol listener)\n"
1485                         "    -C cclconfig\n"
1486                         "    -s simpletargetfile\n"
1487                         "    -p hostname[:portno]    (HTTP proxy)\n");
1488                 exit(1);
1489         }
1490     }
1491
1492     if (!config)
1493     {
1494         yaz_log(YLOG_FATAL, "Load config with -f");
1495         exit(1);
1496     }
1497     global_parameters.server = config->servers;
1498
1499     start_http_listener();
1500     start_proxy();
1501     global_parameters.ccl_filter = load_cclfile("../etc/default.bib");
1502     global_parameters.yaz_marc = yaz_marc_create();
1503     yaz_marc_subfield_str(global_parameters.yaz_marc, "\t");
1504     global_parameters.odr_in = odr_createmem(ODR_DECODE);
1505     global_parameters.odr_out = odr_createmem(ODR_ENCODE);
1506
1507     event_loop(&channel_list);
1508
1509     return 0;
1510 }
1511
1512 /*
1513  * Local variables:
1514  * c-basic-offset: 4
1515  * indent-tabs-mode: nil
1516  * End:
1517  * vim: shiftwidth=4 tabstop=8 expandtab
1518  */