src/pazpar2.c

   1 /* $Id: pazpar2.c,v 1.44 2007-01-18 18:11:19 quinn 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             ingest_records(cl, r->records);
 269         }
 270         cl->state = Client_Idle;
 271     }
 272     else
 273     {          /*"FAILED"*/
 274         cl->hits = 0;
 275         cl->state = Client_Error;
 276         if (r->records) {
 277             Z_Records *recs = r->records;
 278             if (recs->which == Z_Records_NSD)
 279             {
 280                 yaz_log(YLOG_WARN, "Non-surrogate diagnostic");
 281                 cl->diagnostic = *recs->u.nonSurrogateDiagnostic->condition;
 282                 cl->state = Client_Error;
 283             }
 284         }
 285     }
 286 }
 287
 288 char *normalize_mergekey(char *buf, int skiparticle)
 289 {
 290     char *p = buf, *pout = buf;
 291
 292     if (skiparticle)
 293     {
 294         char firstword[64];
 295         char articles[] = "the den der die des an a "; // must end in space
 296
 297         while (*p && !isalnum(*p))
 298             p++;
 299         pout = firstword;
 300         while (*p && *p != ' ' && pout - firstword < 62)
 301             *(pout++) = tolower(*(p++));
 302         *(pout++) = ' ';
 303         *(pout++) = '\0';
 304         if (!strstr(articles, firstword))
 305             p = buf;
 306         pout = buf;
 307     }
 308
 309     while (*p)
 310     {
 311         while (*p && !isalnum(*p))
 312             p++;
 313         while (isalnum(*p))
 314             *(pout++) = tolower(*(p++));
 315         if (*p)
 316             *(pout++) = ' ';
 317         while (*p && !isalnum(*p))
 318             p++;
 319     }
 320     if (buf != pout)
 321         do {
 322             *(pout--) = '\0';
 323         }
 324         while (pout > buf && *pout == ' ');
 325
 326     return buf;
 327 }
 328
 329
 330 #ifdef GAGA
 331 // FIXME needs to be generalized. Should flexibly generate X lists per search
 332 static void extract_subject(struct session *s, const char *rec)
 333 {
 334     const char *field, *subfield;
 335
 336     while ((field = find_field(rec, "650")))
 337     {
 338         rec = field;
 339         if ((subfield = find_subfield(field, 'a')))
 340         {
 341             char *e, *ef;
 342             char buf[1024];
 343             int len;
 344
 345             ef = index(subfield, '\n');
 346             if (!ef)
 347                 return;
 348             if ((e = index(subfield, '\t')) && e < ef)
 349                 ef = e;
 350             while (ef > subfield && !isalpha(*(ef - 1)) && *(ef - 1) != ')')
 351                 ef--;
 352             len = ef - subfield;
 353             assert(len < 1023);
 354             memcpy(buf, subfield, len);
 355             buf[len] = '\0';
 356 #ifdef FIXME
 357             if (*buf)
 358                 termlist_insert(s->termlist, buf);
 359 #endif
 360         }
 361     }
 362 }
 363 #endif
 364
 365 static void add_facet(struct session *s, const char *type, const char *value)
 366 {
 367     int i;
 368
 369     if (!*value)
 370         return;
 371     for (i = 0; i < s->num_termlists; i++)
 372         if (!strcmp(s->termlists[i].name, type))
 373             break;
 374     if (i == s->num_termlists)
 375     {
 376         if (i == SESSION_MAX_TERMLISTS)
 377         {
 378             yaz_log(YLOG_FATAL, "Too many termlists");
 379             exit(1);
 380         }
 381         s->termlists[i].name = nmem_strdup(s->nmem, type);
 382         s->termlists[i].termlist = termlist_create(s->nmem, s->expected_maxrecs, 15);
 383         s->num_termlists = i + 1;
 384     }
 385     termlist_insert(s->termlists[i].termlist, value);
 386 }
 387
 388 int yaz_marc_write_xml();
 389
 390 static xmlDoc *normalize_record(struct client *cl, Z_External *rec)
 391 {
 392     struct conf_retrievalprofile *rprofile = cl->database->rprofile;
 393     struct conf_retrievalmap *m;
 394     xmlNode *res;
 395     xmlDoc *rdoc;
 396
 397     // First normalize to XML
 398     if (rprofile->native_syntax == Nativesyn_iso2709)
 399     {
 400         char *buf;
 401         int len;
 402         if (rec->which != Z_External_octet)
 403         {
 404             yaz_log(YLOG_WARN, "Unexpected external branch, probably BER");
 405             return 0;
 406         }
 407         buf = (char*) rec->u.octet_aligned->buf;
 408         len = rec->u.octet_aligned->len;
 409         if (yaz_marc_read_iso2709(rprofile->yaz_marc, buf, len) < 0)
 410         {
 411             yaz_log(YLOG_WARN, "Failed to decode MARC");
 412             return 0;
 413         }
 414         if (yaz_marc_write_xml(rprofile->yaz_marc, &res,
 415                     "http://www.loc.gov/MARC21/slim", 0, 0) < 0)
 416         {
 417             yaz_log(YLOG_WARN, "Failed to encode as XML");
 418             return 0;
 419         }
 420         rdoc = xmlNewDoc("1.0");
 421         xmlDocSetRootElement(rdoc, res);
 422     }
 423     else
 424     {
 425         yaz_log(YLOG_FATAL, "Unknown native_syntax in normalize_record");
 426         exit(1);
 427     }
 428
 429     if (global_parameters.dump_records)
 430     {
 431         fprintf(stderr, "Input Record (normalized):\n----------------\n");
 432 #if LIBXML_VERSION >= 20600
 433         xmlDocFormatDump(stderr, rdoc, 1);
 434 #else
 435         xmlDocDump(stderr, rdoc);
 436 #endif
 437     }
 438
 439     for (m = rprofile->maplist; m; m = m->next)
 440     {
 441         xmlDoc *new;
 442         if (m->type != Map_xslt)
 443         {
 444             yaz_log(YLOG_WARN, "Unknown map type");
 445             return 0;
 446         }
 447         if (!(new = xsltApplyStylesheet(m->stylesheet, rdoc, 0)))
 448         {
 449             yaz_log(YLOG_WARN, "XSLT transformation failed");
 450             return 0;
 451         }
 452         xmlFreeDoc(rdoc);
 453         rdoc = new;
 454     }
 455     if (global_parameters.dump_records)
 456     {
 457         fprintf(stderr, "Record:\n----------------\n");
 458 #if LIBXML_VERSION >= 20600
 459         xmlDocFormatDump(stderr, rdoc, 1);
 460 #else
 461         xmlDocDump(stderr, rdoc);
 462 #endif
 463     }
 464     return rdoc;
 465 }
 466
 467 // Extract what appears to be years from buf, storing highest and
 468 // lowest values.
 469 static int extract_years(const char *buf, int *first, int *last)
 470 {
 471     *first = -1;
 472     *last = -1;
 473     while (*buf)
 474     {
 475         const char *e;
 476         int len;
 477
 478         while (*buf && !isdigit(*buf))
 479             buf++;
 480         len = 0;
 481         for (e = buf; *e && isdigit(*e); e++)
 482             len++;
 483         if (len == 4)
 484         {
 485             int value = atoi(buf);
 486             if (*first < 0 || value < *first)
 487                 *first = value;
 488             if (*last < 0 || value > *last)
 489                 *last = value;
 490         }
 491         buf = e;
 492     }
 493     return *first;
 494 }
 495
 496 static struct record *ingest_record(struct client *cl, Z_External *rec)
 497 {
 498     xmlDoc *xdoc = normalize_record(cl, rec);
 499     xmlNode *root, *n;
 500     struct record *res;
 501     struct record_cluster *cluster;
 502     struct session *se = cl->session;
 503     xmlChar *mergekey, *mergekey_norm;
 504     xmlChar *type = 0;
 505     xmlChar *value = 0;
 506     struct conf_service *service = global_parameters.server->service;
 507
 508     if (!xdoc)
 509         return 0;
 510
 511     root = xmlDocGetRootElement(xdoc);
 512     if (!(mergekey = xmlGetProp(root, "mergekey")))
 513     {
 514         yaz_log(YLOG_WARN, "No mergekey found in record");
 515         xmlFreeDoc(xdoc);
 516         return 0;
 517     }
 518
 519     res = nmem_malloc(se->nmem, sizeof(struct record));
 520     res->next = 0;
 521     res->client = cl;
 522     res->metadata = nmem_malloc(se->nmem,
 523             sizeof(struct record_metadata*) * service->num_metadata);
 524     memset(res->metadata, 0, sizeof(struct record_metadata*) * service->num_metadata);
 525
 526     mergekey_norm = nmem_strdup(se->nmem, (char*) mergekey);
 527     xmlFree(mergekey);
 528     normalize_mergekey(mergekey_norm, 0);
 529
 530     cluster = reclist_insert(se->reclist, res, mergekey_norm, &se->total_merged);
 531     if (global_parameters.dump_records)
 532         yaz_log(YLOG_LOG, "Cluster id %d from %s (#%d)", cluster->recid,
 533                 cl->database->url, cl->records);
 534     if (!cluster)
 535     {
 536         /* no room for record */
 537         xmlFreeDoc(xdoc);
 538         return 0;
 539     }
 540     relevance_newrec(se->relevance, cluster);
 541
 542     for (n = root->children; n; n = n->next)
 543     {
 544         if (type)
 545             xmlFree(type);
 546         if (value)
 547             xmlFree(value);
 548         type = value = 0;
 549
 550         if (n->type != XML_ELEMENT_NODE)
 551             continue;
 552         if (!strcmp(n->name, "metadata"))
 553         {
 554             struct conf_metadata *md = 0;
 555             struct conf_sortkey *sk = 0;
 556             struct record_metadata **wheretoput, *newm;
 557             int imeta;
 558             int first, last;
 559
 560             type = xmlGetProp(n, "type");
 561             value = xmlNodeListGetString(xdoc, n->children, 0);
 562
 563             if (!type || !value)
 564                 continue;
 565
 566             // First, find out what field we're looking at
 567             for (imeta = 0; imeta < service->num_metadata; imeta++)
 568                 if (!strcmp(type, service->metadata[imeta].name))
 569                 {
 570                     md = &service->metadata[imeta];
 571                     if (md->sortkey_offset >= 0)
 572                         sk = &service->sortkeys[md->sortkey_offset];
 573                     break;
 574                 }
 575             if (!md)
 576             {
 577                 yaz_log(YLOG_WARN, "Ignoring unknown metadata element: %s", type);
 578                 continue;
 579             }
 580
 581             // Find out where we are putting it
 582             if (md->merge == Metadata_merge_no)
 583                 wheretoput = &res->metadata[imeta];
 584             else
 585                 wheretoput = &cluster->metadata[imeta];
 586
 587             // Put it there
 588             newm = nmem_malloc(se->nmem, sizeof(struct record_metadata));
 589             newm->next = 0;
 590             if (md->type == Metadata_type_generic)
 591             {
 592                 char *p, *pe;
 593                 for (p = value; *p && isspace(*p); p++)
 594                     ;
 595                 for (pe = p + strlen(p) - 1;
 596                         pe > p && strchr(" ,/.:([", *pe); pe--)
 597                     *pe = '\0';
 598                 newm->data.text = nmem_strdup(se->nmem, p);
 599
 600             }
 601             else if (md->type == Metadata_type_year)
 602             {
 603                 if (extract_years(value, &first, &last) < 0)
 604                     continue;
 605             }
 606             else
 607             {
 608                 yaz_log(YLOG_WARN, "Unknown type in metadata element %s", type);
 609                 continue;
 610             }
 611             if (md->type == Metadata_type_year && md->merge != Metadata_merge_range)
 612             {
 613                 yaz_log(YLOG_WARN, "Only range merging supported for years");
 614                 continue;
 615             }
 616             if (md->merge == Metadata_merge_unique)
 617             {
 618                 struct record_metadata *mnode;
 619                 for (mnode = *wheretoput; mnode; mnode = mnode->next)
 620                     if (!strcmp(mnode->data.text, newm->data.text))
 621                         break;
 622                 if (!mnode)
 623                 {
 624                     newm->next = *wheretoput;
 625                     *wheretoput = newm;
 626                 }
 627             }
 628             else if (md->merge == Metadata_merge_longest)
 629             {
 630                 if (!*wheretoput ||
 631                         strlen(newm->data.text) > strlen((*wheretoput)->data.text))
 632                 {
 633                     *wheretoput = newm;
 634                     if (sk)
 635                     {
 636                         char *s = nmem_strdup(se->nmem, newm->data.text);
 637                         if (!cluster->sortkeys[md->sortkey_offset])
 638                             cluster->sortkeys[md->sortkey_offset] =
 639                                 nmem_malloc(se->nmem, sizeof(union data_types));
 640                         normalize_mergekey(s,
 641                                 (sk->type == Metadata_sortkey_skiparticle));
 642                         cluster->sortkeys[md->sortkey_offset]->text = s;
 643                     }
 644                 }
 645             }
 646             else if (md->merge == Metadata_merge_all || md->merge == Metadata_merge_no)
 647             {
 648                 newm->next = *wheretoput;
 649                 *wheretoput = newm;
 650             }
 651             else if (md->merge == Metadata_merge_range)
 652             {
 653                 assert(md->type == Metadata_type_year);
 654                 if (!*wheretoput)
 655                 {
 656                     *wheretoput = newm;
 657                     (*wheretoput)->data.number.min = first;
 658                     (*wheretoput)->data.number.max = last;
 659                     if (sk)
 660                         cluster->sortkeys[md->sortkey_offset] = &newm->data;
 661                 }
 662                 else
 663                 {
 664                     if (first < (*wheretoput)->data.number.min)
 665                         (*wheretoput)->data.number.min = first;
 666                     if (last > (*wheretoput)->data.number.max)
 667                         (*wheretoput)->data.number.max = last;
 668                 }
 669 #ifdef GAGA
 670                 if (sk)
 671                 {
 672                     union data_types *sdata = cluster->sortkeys[md->sortkey_offset];
 673                     yaz_log(YLOG_LOG, "SK range: %d-%d", sdata->number.min, sdata->number.max);
 674                 }
 675 #endif
 676             }
 677             else
 678                 yaz_log(YLOG_WARN, "Don't know how to merge on element name %s", md->name);
 679
 680             if (md->rank)
 681                 relevance_countwords(se->relevance, cluster, value, md->rank);
 682             if (md->termlist)
 683             {
 684                 if (md->type == Metadata_type_year)
 685                 {
 686                     char year[64];
 687                     sprintf(year, "%d", last);
 688                     add_facet(se, type, year);
 689                     if (first != last)
 690                     {
 691                         sprintf(year, "%d", first);
 692                         add_facet(se, type, year);
 693                     }
 694                 }
 695                 else
 696                     add_facet(se, type, value);
 697             }
 698             xmlFree(type);
 699             xmlFree(value);
 700             type = value = 0;
 701         }
 702         else
 703             yaz_log(YLOG_WARN, "Unexpected element %s in internal record", n->name);
 704     }
 705     if (type)
 706         xmlFree(type);
 707     if (value)
 708         xmlFree(value);
 709
 710     xmlFreeDoc(xdoc);
 711
 712     relevance_donerecord(se->relevance, cluster);
 713     se->total_records++;
 714
 715     return res;
 716 }
 717
 718 static void ingest_records(struct client *cl, Z_Records *r)
 719 {
 720 #if USE_TIMING
 721     yaz_timing_t t = yaz_timing_create();
 722 #endif
 723     struct record *rec;
 724     struct session *s = cl->session;
 725     Z_NamePlusRecordList *rlist;
 726     int i;
 727
 728     if (r->which != Z_Records_DBOSD)
 729         return;
 730     rlist = r->u.databaseOrSurDiagnostics;
 731     for (i = 0; i < rlist->num_records; i++)
 732     {
 733         Z_NamePlusRecord *npr = rlist->records[i];
 734
 735         cl->records++;
 736         if (npr->which != Z_NamePlusRecord_databaseRecord)
 737         {
 738             yaz_log(YLOG_WARN, "Unexpected record type, probably diagnostic");
 739             continue;
 740         }
 741
 742         rec = ingest_record(cl, npr->u.databaseRecord);
 743         if (!rec)
 744             continue;
 745     }
 746     if (s->watchlist[SESSION_WATCH_RECORDS].fun && rlist->num_records)
 747         session_alert_watch(s, SESSION_WATCH_RECORDS);
 748
 749 #if USE_TIMING
 750     yaz_timing_stop(t);
 751     yaz_log(YLOG_LOG, "ingest_records %6.5f %3.2f %3.2f",
 752             yaz_timing_get_real(t), yaz_timing_get_user(t),
 753             yaz_timing_get_sys(t));
 754     yaz_timing_destroy(&t);
 755 #endif
 756 }
 757
 758 static void do_presentResponse(IOCHAN i, Z_APDU *a)
 759 {
 760     struct connection *co = iochan_getdata(i);
 761     struct client *cl = co->client;
 762     Z_PresentResponse *r = a->u.presentResponse;
 763
 764     if (r->records) {
 765         Z_Records *recs = r->records;
 766         if (recs->which == Z_Records_NSD)
 767         {
 768             yaz_log(YLOG_WARN, "Non-surrogate diagnostic");
 769             cl->diagnostic = *recs->u.nonSurrogateDiagnostic->condition;
 770             cl->state = Client_Error;
 771         }
 772     }
 773
 774     if (!*r->presentStatus && cl->state != Client_Error)
 775     {
 776         yaz_log(YLOG_DEBUG, "Good Present response");
 777         ingest_records(cl, r->records);
 778         cl->state = Client_Idle;
 779     }
 780     else if (*r->presentStatus)
 781     {
 782         yaz_log(YLOG_WARN, "Bad Present response");
 783         cl->state = Client_Error;
 784     }
 785 }
 786
 787 static void handler(IOCHAN i, int event)
 788 {
 789     struct connection *co = iochan_getdata(i);
 790     struct client *cl = co->client;
 791     struct session *se = 0;
 792
 793     if (cl)
 794         se = cl->session;
 795     else
 796     {
 797         yaz_log(YLOG_WARN, "Destroying orphan connection");
 798         connection_destroy(co);
 799         return;
 800     }
 801
 802     if (co->state == Conn_Connecting && event & EVENT_OUTPUT)
 803     {
 804         int errcode;
 805         socklen_t errlen = sizeof(errcode);
 806
 807         if (getsockopt(cs_fileno(co->link), SOL_SOCKET, SO_ERROR, &errcode,
 808             &errlen) < 0 || errcode != 0)
 809         {
 810             client_fatal(cl);
 811             return;
 812         }
 813         else
 814         {
 815             yaz_log(YLOG_DEBUG, "Connect OK");
 816             co->state = Conn_Open;
 817             if (cl)
 818                 cl->state = Client_Connected;
 819         }
 820     }
 821
 822     else if (event & EVENT_INPUT)
 823     {
 824         int len = cs_get(co->link, &co->ibuf, &co->ibufsize);
 825
 826         if (len < 0)
 827         {
 828             yaz_log(YLOG_WARN|YLOG_ERRNO, "Error reading from Z server");
 829             connection_destroy(co);
 830             return;
 831         }
 832         else if (len == 0)
 833         {
 834             yaz_log(YLOG_WARN, "EOF reading from Z server");
 835             connection_destroy(co);
 836             return;
 837         }
 838         else if (len > 1) // We discard input if we have no connection
 839         {
 840             co->state = Conn_Open;
 841
 842             if (cl && (cl->requestid == se->requestid || cl->state == Client_Initializing))
 843             {
 844                 Z_APDU *a;
 845
 846                 odr_reset(global_parameters.odr_in);
 847                 odr_setbuf(global_parameters.odr_in, co->ibuf, len, 0);
 848                 if (!z_APDU(global_parameters.odr_in, &a, 0, 0))
 849                 {
 850                     client_fatal(cl);
 851                     return;
 852                 }
 853                 switch (a->which)
 854                 {
 855                     case Z_APDU_initResponse:
 856                         do_initResponse(i, a);
 857                         break;
 858                     case Z_APDU_searchResponse:
 859                         do_searchResponse(i, a);
 860                         break;
 861                     case Z_APDU_presentResponse:
 862                         do_presentResponse(i, a);
 863                         break;
 864                     default:
 865                         yaz_log(YLOG_WARN, "Unexpected result from server");
 866                         client_fatal(cl);
 867                         return;
 868                 }
 869                 // We aren't expecting staggered output from target
 870                 // if (cs_more(t->link))
 871                 //    iochan_setevent(i, EVENT_INPUT);
 872             }
 873             else  // we throw away response and go to idle mode
 874             {
 875                 yaz_log(YLOG_DEBUG, "Ignoring result of expired operation");
 876                 cl->state = Client_Idle;
 877             }
 878         }
 879         /* if len==1 we do nothing but wait for more input */
 880     }
 881
 882     if (cl->state == Client_Connected) {
 883         send_init(i);
 884     }
 885
 886     if (cl->state == Client_Idle)
 887     {
 888         if (cl->requestid != se->requestid && *se->query) {
 889             send_search(i);
 890         }
 891         else if (cl->hits > 0 && cl->records < global_parameters.toget &&
 892             cl->records < cl->hits) {
 893             send_present(i);
 894         }
 895     }
 896 }
 897
 898 // Disassociate connection from client
 899 static void connection_release(struct connection *co)
 900 {
 901     struct client *cl = co->client;
 902
 903     yaz_log(YLOG_DEBUG, "Connection release %s", co->host->hostport);
 904     if (!cl)
 905         return;
 906     cl->connection = 0;
 907     co->client = 0;
 908 }
 909
 910 // Close connection and recycle structure
 911 static void connection_destroy(struct connection *co)
 912 {
 913     struct host *h = co->host;
 914     cs_close(co->link);
 915     iochan_destroy(co->iochan);
 916
 917     yaz_log(YLOG_DEBUG, "Connection destroy %s", co->host->hostport);
 918     if (h->connections == co)
 919         h->connections = co->next;
 920     else
 921     {
 922         struct connection *pco;
 923         for (pco = h->connections; pco && pco->next != co; pco = pco->next)
 924             ;
 925         if (pco)
 926             pco->next = co->next;
 927         else
 928             abort();
 929     }
 930     if (co->client)
 931     {
 932         if (co->client->state != Client_Idle)
 933             co->client->state = Client_Disconnected;
 934         co->client->connection = 0;
 935     }
 936     co->next = connection_freelist;
 937     connection_freelist = co;
 938 }
 939
 940 // Creates a new connection for client, associated with the host of
 941 // client's database
 942 static struct connection *connection_create(struct client *cl)
 943 {
 944     struct connection *new;
 945     COMSTACK link;
 946     int res;
 947     void *addr;
 948
 949     yaz_log(YLOG_DEBUG, "Connection create %s", cl->database->url);
 950     if (!(link = cs_create(tcpip_type, 0, PROTO_Z3950)))
 951     {
 952         yaz_log(YLOG_FATAL|YLOG_ERRNO, "Failed to create comstack");
 953         exit(1);
 954     }
 955
 956     if (!(addr = cs_straddr(link, cl->database->host->ipport)))
 957     {
 958         yaz_log(YLOG_WARN|YLOG_ERRNO, "Lookup of IP address %s failed?",
 959             cl->database->host->ipport);
 960         return 0;
 961     }
 962
 963     res = cs_connect(link, addr);
 964     if (res < 0)
 965     {
 966         yaz_log(YLOG_WARN|YLOG_ERRNO, "cs_connect %s", cl->database->url);
 967         return 0;
 968     }
 969
 970     if ((new = connection_freelist))
 971         connection_freelist = new->next;
 972     else
 973     {
 974         new = xmalloc(sizeof (struct connection));
 975         new->ibuf = 0;
 976         new->ibufsize = 0;
 977     }
 978     new->state = Conn_Connecting;
 979     new->host = cl->database->host;
 980     new->next = new->host->connections;
 981     new->host->connections = new;
 982     new->client = cl;
 983     cl->connection = new;
 984     new->link = link;
 985
 986     new->iochan = iochan_create(cs_fileno(link), handler, 0);
 987     iochan_setdata(new->iochan, new);
 988     new->iochan->next = channel_list;
 989     channel_list = new->iochan;
 990     return new;
 991 }
 992
 993 // Close connection and set state to error
 994 static void client_fatal(struct client *cl)
 995 {
 996     yaz_log(YLOG_WARN, "Fatal error from %s", cl->database->url);
 997     connection_destroy(cl->connection);
 998     cl->state = Client_Error;
 999 }
1000
1001 // Ensure that client has a connection associated
1002 static int client_prep_connection(struct client *cl)
1003 {
1004     struct connection *co;
1005     struct session *se = cl->session;
1006     struct host *host = cl->database->host;
1007
1008     co = cl->connection;
1009
1010     yaz_log(YLOG_DEBUG, "Client prep %s", cl->database->url);
1011
1012     if (!co)
1013     {
1014         // See if someone else has an idle connection
1015         // We should look at timestamps here to select the longest-idle connection
1016         for (co = host->connections; co; co = co->next)
1017             if (co->state == Conn_Open && (!co->client || co->client->session != se))
1018                 break;
1019         if (co)
1020         {
1021             connection_release(co);
1022             cl->connection = co;
1023             co->client = cl;
1024         }
1025         else
1026             co = connection_create(cl);
1027     }
1028     if (co)
1029     {
1030         if (co->state == Conn_Connecting)
1031         {
1032             cl->state = Client_Connecting;
1033             iochan_setflag(co->iochan, EVENT_OUTPUT);
1034         }
1035         else if (co->state == Conn_Open)
1036         {
1037             if (cl->state == Client_Error || cl->state == Client_Disconnected)
1038                 cl->state = Client_Idle;
1039             iochan_setflag(co->iochan, EVENT_OUTPUT);
1040         }
1041         return 1;
1042     }
1043     else
1044         return 0;
1045 }
1046
1047 // This function will most likely vanish when a proper target profile mechanism is
1048 // introduced.
1049 void load_simpletargets(const char *fn)
1050 {
1051     FILE *f = fopen(fn, "r");
1052     char line[256];
1053
1054     if (!f)
1055     {
1056         yaz_log(YLOG_WARN|YLOG_ERRNO, "open %s", fn);
1057         exit(1);
1058     }
1059
1060     while (fgets(line, 255, f))
1061     {
1062         char *url, *db;
1063         char *name;
1064         struct host *host;
1065         struct database *database;
1066
1067         if (strncmp(line, "target ", 7))
1068             continue;
1069         line[strlen(line) - 1] = '\0';
1070
1071         if ((name = strchr(line, ';')))
1072             *(name++) = '\0';
1073
1074         url = line + 7;
1075         if ((db = strchr(url, '/')))
1076             *(db++) = '\0';
1077         else
1078             db = "Default";
1079
1080         yaz_log(YLOG_LOG, "Target: %s, '%s'", url, db);
1081         for (host = hosts; host; host = host->next)
1082             if (!strcmp(url, host->hostport))
1083                 break;
1084         if (!host)
1085         {
1086             struct addrinfo *addrinfo, hints;
1087             char *port;
1088             char ipport[128];
1089             unsigned char addrbuf[4];
1090             int res;
1091
1092             host = xmalloc(sizeof(struct host));
1093             host->hostport = xstrdup(url);
1094             host->connections = 0;
1095
1096             if ((port = strchr(url, ':')))
1097                 *(port++) = '\0';
1098             else
1099                 port = "210";
1100
1101             hints.ai_flags = 0;
1102             hints.ai_family = PF_INET;
1103             hints.ai_socktype = SOCK_STREAM;
1104             hints.ai_protocol = IPPROTO_TCP;
1105             hints.ai_addrlen = 0;
1106             hints.ai_addr = 0;
1107             hints.ai_canonname = 0;
1108             hints.ai_next = 0;
1109             // This is not robust code. It assumes that getaddrinfo returns AF_INET
1110             // address.
1111             if ((res = getaddrinfo(url, port, &hints, &addrinfo)))
1112             {
1113                 yaz_log(YLOG_WARN, "Failed to resolve %s: %s", url, gai_strerror(res));
1114                 xfree(host->hostport);
1115                 xfree(host);
1116                 continue;
1117             }
1118             assert(addrinfo->ai_family == PF_INET);
1119             memcpy(addrbuf, &((struct sockaddr_in*)addrinfo->ai_addr)->sin_addr.s_addr, 4);
1120             sprintf(ipport, "%u.%u.%u.%u:%s",
1121                     addrbuf[0], addrbuf[1], addrbuf[2], addrbuf[3], port);
1122             host->ipport = xstrdup(ipport);
1123             freeaddrinfo(addrinfo);
1124             host->next = hosts;
1125             hosts = host;
1126         }
1127         database = xmalloc(sizeof(struct database));
1128         database->host = host;
1129         database->url = xmalloc(strlen(url) + strlen(db) + 2);
1130         strcpy(database->url, url);
1131         strcat(database->url, "/");
1132         strcat(database->url, db);
1133         if (name)
1134             database->name = xstrdup(name);
1135         else
1136             database->name = 0;
1137
1138         database->databases = xmalloc(2 * sizeof(char *));
1139         database->databases[0] = xstrdup(db);
1140         database->databases[1] = 0;
1141         database->errors = 0;
1142         database->qprofile = 0;
1143         database->rprofile = database_retrieval_profile(database);
1144         database->next = databases;
1145         databases = database;
1146
1147     }
1148     fclose(f);
1149 }
1150
1151 static void pull_terms(NMEM nmem, struct ccl_rpn_node *n, char **termlist, int *num)
1152 {
1153     switch (n->kind)
1154     {
1155         case CCL_RPN_AND:
1156         case CCL_RPN_OR:
1157         case CCL_RPN_NOT:
1158         case CCL_RPN_PROX:
1159             pull_terms(nmem, n->u.p[0], termlist, num);
1160             pull_terms(nmem, n->u.p[1], termlist, num);
1161             break;
1162         case CCL_RPN_TERM:
1163             termlist[(*num)++] = nmem_strdup(nmem, n->u.t.term);
1164             break;
1165         default: // NOOP
1166             break;
1167     }
1168 }
1169
1170 // Extract terms from query into null-terminated termlist
1171 static int extract_terms(NMEM nmem, char *query, char **termlist)
1172 {
1173     int error, pos;
1174     struct ccl_rpn_node *n;
1175     int num = 0;
1176
1177     n = ccl_find_str(global_parameters.ccl_filter, query, &error, &pos);
1178     if (!n)
1179         return -1;
1180     pull_terms(nmem, n, termlist, &num);
1181     termlist[num] = 0;
1182     ccl_rpn_delete(n);
1183     return 0;
1184 }
1185
1186 static struct client *client_create(void)
1187 {
1188     struct client *r;
1189     if (client_freelist)
1190     {
1191         r = client_freelist;
1192         client_freelist = client_freelist->next;
1193     }
1194     else
1195         r = xmalloc(sizeof(struct client));
1196     r->database = 0;
1197     r->connection = 0;
1198     r->session = 0;
1199     r->hits = 0;
1200     r->records = 0;
1201     r->setno = 0;
1202     r->requestid = -1;
1203     r->diagnostic = 0;
1204     r->state = Client_Disconnected;
1205     r->next = 0;
1206     return r;
1207 }
1208
1209 void client_destroy(struct client *c)
1210 {
1211     struct session *se = c->session;
1212     if (c == se->clients)
1213         se->clients = c->next;
1214     else
1215     {
1216         struct client *cc;
1217         for (cc = se->clients; cc && cc->next != c; cc = cc->next)
1218             ;
1219         if (cc)
1220             cc->next = c->next;
1221     }
1222     if (c->connection)
1223         connection_release(c->connection);
1224     c->next = client_freelist;
1225     client_freelist = c;
1226 }
1227
1228 void session_set_watch(struct session *s, int what, session_watchfun fun, void *data)
1229 {
1230     s->watchlist[what].fun = fun;
1231     s->watchlist[what].data = data;
1232 }
1233
1234 void session_alert_watch(struct session *s, int what)
1235 {
1236     if (!s->watchlist[what].fun)
1237         return;
1238     (*s->watchlist[what].fun)(s->watchlist[what].data);
1239     s->watchlist[what].fun = 0;
1240     s->watchlist[what].data = 0;
1241 }
1242
1243 // This needs to be extended with selection criteria
1244 static struct conf_retrievalprofile *database_retrieval_profile(struct database *db)
1245 {
1246     if (!config)
1247     {
1248         yaz_log(YLOG_FATAL, "Must load configuration (-f)");
1249         exit(1);
1250     }
1251     if (!config->retrievalprofiles)
1252     {
1253         yaz_log(YLOG_FATAL, "No retrieval profiles defined");
1254     }
1255     return config->retrievalprofiles;
1256 }
1257
1258 // This should be extended with parameters to control selection criteria
1259 // Associates a set of clients with a session;
1260 int select_targets(struct session *se)
1261 {
1262     struct database *db;
1263     int c = 0;
1264
1265     while (se->clients)
1266         client_destroy(se->clients);
1267     for (db = databases; db; db = db->next)
1268     {
1269         struct client *cl = client_create();
1270         cl->database = db;
1271         cl->session = se;
1272         cl->next = se->clients;
1273         se->clients = cl;
1274         c++;
1275     }
1276     return c;
1277 }
1278
1279 int session_active_clients(struct session *s)
1280 {
1281     struct client *c;
1282     int res = 0;
1283
1284     for (c = s->clients; c; c = c->next)
1285         if (c->connection && (c->state == Client_Connecting ||
1286                     c->state == Client_Initializing ||
1287                     c->state == Client_Searching ||
1288                     c->state == Client_Presenting))
1289             res++;
1290
1291     return res;
1292 }
1293
1294 char *search(struct session *se, char *query)
1295 {
1296     int live_channels = 0;
1297     struct client *cl;
1298
1299     yaz_log(YLOG_DEBUG, "Search");
1300
1301     strcpy(se->query, query);
1302     se->requestid++;
1303     nmem_reset(se->nmem);
1304     for (cl = se->clients; cl; cl = cl->next)
1305     {
1306         cl->hits = -1;
1307         cl->records = 0;
1308         cl->diagnostic = 0;
1309
1310         if (client_prep_connection(cl))
1311             live_channels++;
1312     }
1313     if (live_channels)
1314     {
1315         char *p[512];
1316         int maxrecs = live_channels * global_parameters.toget;
1317         se->num_termlists = 0;
1318         se->reclist = reclist_create(se->nmem, maxrecs);
1319         extract_terms(se->nmem, query, p);
1320         se->relevance = relevance_create(se->nmem, (const char **) p, maxrecs);
1321         se->total_records = se->total_hits = se->total_merged = 0;
1322         se->expected_maxrecs = maxrecs;
1323     }
1324     else
1325         return "NOTARGETS";
1326
1327     return 0;
1328 }
1329
1330 void destroy_session(struct session *s)
1331 {
1332     yaz_log(YLOG_LOG, "Destroying session");
1333     while (s->clients)
1334         client_destroy(s->clients);
1335     nmem_destroy(s->nmem);
1336     wrbuf_free(s->wrbuf, 1);
1337 }
1338
1339 struct session *new_session()
1340 {
1341     int i;
1342     struct session *session = xmalloc(sizeof(*session));
1343
1344     yaz_log(YLOG_DEBUG, "New pazpar2 session");
1345
1346     session->total_hits = 0;
1347     session->total_records = 0;
1348     session->num_termlists = 0;
1349     session->reclist = 0;
1350     session->requestid = -1;
1351     session->clients = 0;
1352     session->expected_maxrecs = 0;
1353     session->query[0] = '\0';
1354     session->nmem = nmem_create();
1355     session->wrbuf = wrbuf_alloc();
1356     for (i = 0; i <= SESSION_WATCH_MAX; i++)
1357     {
1358         session->watchlist[i].data = 0;
1359         session->watchlist[i].fun = 0;
1360     }
1361
1362     select_targets(session);
1363
1364     return session;
1365 }
1366
1367 struct hitsbytarget *hitsbytarget(struct session *se, int *count)
1368 {
1369     static struct hitsbytarget res[1000]; // FIXME MM
1370     struct client *cl;
1371
1372     *count = 0;
1373     for (cl = se->clients; cl; cl = cl->next)
1374     {
1375         res[*count].id = cl->database->url;
1376         res[*count].name = cl->database->name;
1377         res[*count].hits = cl->hits;
1378         res[*count].records = cl->records;
1379         res[*count].diagnostic = cl->diagnostic;
1380         res[*count].state = client_states[cl->state];
1381         res[*count].connected  = cl->connection ? 1 : 0;
1382         (*count)++;
1383     }
1384
1385     return res;
1386 }
1387
1388 struct termlist_score **termlist(struct session *s, const char *name, int *num)
1389 {
1390     int i;
1391
1392     for (i = 0; i < s->num_termlists; i++)
1393         if (!strcmp(s->termlists[i].name, name))
1394             return termlist_highscore(s->termlists[i].termlist, num);
1395     return 0;
1396 }
1397
1398 #ifdef MISSING_HEADERS
1399 void report_nmem_stats(void)
1400 {
1401     size_t in_use, is_free;
1402
1403     nmem_get_memory_in_use(&in_use);
1404     nmem_get_memory_free(&is_free);
1405
1406     yaz_log(YLOG_LOG, "nmem stat: use=%ld free=%ld",
1407             (long) in_use, (long) is_free);
1408 }
1409 #endif
1410
1411 struct record_cluster *show_single(struct session *s, int id)
1412 {
1413     struct record_cluster *r;
1414
1415     reclist_rewind(s->reclist);
1416     while ((r = reclist_read_record(s->reclist)))
1417         if (r->recid == id)
1418             return r;
1419     return 0;
1420 }
1421
1422 struct record_cluster **show(struct session *s, struct reclist_sortparms *sp, int start,
1423         int *num, int *total, int *sumhits, NMEM nmem_show)
1424 {
1425     struct record_cluster **recs = nmem_malloc(nmem_show, *num
1426                                        * sizeof(struct record_cluster *));
1427     struct reclist_sortparms *spp;
1428     int i;
1429 #if USE_TIMING
1430     yaz_timing_t t = yaz_timing_create();
1431 #endif
1432
1433     for (spp = sp; spp; spp = spp->next)
1434         if (spp->type == Metadata_sortkey_relevance)
1435         {
1436             relevance_prepare_read(s->relevance, s->reclist);
1437             break;
1438         }
1439     reclist_sort(s->reclist, sp);
1440
1441     *total = s->reclist->num_records;
1442     *sumhits = s->total_hits;
1443
1444     for (i = 0; i < start; i++)
1445         if (!reclist_read_record(s->reclist))
1446         {
1447             *num = 0;
1448             recs = 0;
1449             break;
1450         }
1451
1452     for (i = 0; i < *num; i++)
1453     {
1454         struct record_cluster *r = reclist_read_record(s->reclist);
1455         if (!r)
1456         {
1457             *num = i;
1458             break;
1459         }
1460         recs[i] = r;
1461     }
1462 #if USE_TIMING
1463     yaz_timing_stop(t);
1464     yaz_log(YLOG_LOG, "show %6.5f %3.2f %3.2f",
1465             yaz_timing_get_real(t), yaz_timing_get_user(t),
1466             yaz_timing_get_sys(t));
1467     yaz_timing_destroy(&t);
1468 #endif
1469     return recs;
1470 }
1471
1472 void statistics(struct session *se, struct statistics *stat)
1473 {
1474     struct client *cl;
1475     int count = 0;
1476
1477     memset(stat, 0, sizeof(*stat));
1478     for (cl = se->clients; cl; cl = cl->next)
1479     {
1480         if (!cl->connection)
1481             stat->num_no_connection++;
1482         switch (cl->state)
1483         {
1484             case Client_Connecting: stat->num_connecting++; break;
1485             case Client_Initializing: stat->num_initializing++; break;
1486             case Client_Searching: stat->num_searching++; break;
1487             case Client_Presenting: stat->num_presenting++; break;
1488             case Client_Idle: stat->num_idle++; break;
1489             case Client_Failed: stat->num_failed++; break;
1490             case Client_Error: stat->num_error++; break;
1491             default: break;
1492         }
1493         count++;
1494     }
1495     stat->num_hits = se->total_hits;
1496     stat->num_records = se->total_records;
1497
1498     stat->num_clients = count;
1499 }
1500
1501 static CCL_bibset load_cclfile(const char *fn)
1502 {
1503     CCL_bibset res = ccl_qual_mk();
1504     if (ccl_qual_fname(res, fn) < 0)
1505     {
1506         yaz_log(YLOG_FATAL|YLOG_ERRNO, "%s", fn);
1507         exit(1);
1508     }
1509     return res;
1510 }
1511
1512 static void start_http_listener(void)
1513 {
1514     char hp[128] = "";
1515     struct conf_server *ser = global_parameters.server;
1516
1517     if (*global_parameters.listener_override)
1518         strcpy(hp, global_parameters.listener_override);
1519     else
1520     {
1521         strcpy(hp, ser->host ? ser->host : "");
1522         if (ser->port)
1523         {
1524             if (*hp)
1525                 strcat(hp, ":");
1526             sprintf(hp + strlen(hp), "%d", ser->port);
1527         }
1528     }
1529     http_init(hp);
1530 }
1531
1532 static void start_proxy(void)
1533 {
1534     char hp[128] = "";
1535     struct conf_server *ser = global_parameters.server;
1536
1537     if (*global_parameters.proxy_override)
1538         strcpy(hp, global_parameters.proxy_override);
1539     else if (ser->proxy_host || ser->proxy_port)
1540     {
1541         strcpy(hp, ser->proxy_host ? ser->proxy_host : "");
1542         if (ser->proxy_port)
1543         {
1544             if (*hp)
1545                 strcat(hp, ":");
1546             sprintf(hp + strlen(hp), "%d", ser->proxy_port);
1547         }
1548     }
1549     else
1550         return;
1551
1552     http_set_proxyaddr(hp);
1553 }
1554
1555 int main(int argc, char **argv)
1556 {
1557     int ret;
1558     char *arg;
1559
1560     if (signal(SIGPIPE, SIG_IGN) == SIG_ERR)
1561         yaz_log(YLOG_WARN|YLOG_ERRNO, "signal");
1562
1563     yaz_log_init(YLOG_DEFAULT_LEVEL, "pazpar2", 0);
1564
1565     while ((ret = options("f:x:h:p:C:s:d", argv, argc, &arg)) != -2)
1566     {
1567         switch (ret) {
1568             case 'f':
1569                 if (!read_config(arg))
1570                     exit(1);
1571                 break;
1572             case 'h':
1573                 strcpy(global_parameters.listener_override, arg);
1574                 break;
1575             case 'C':
1576                 global_parameters.ccl_filter = load_cclfile(arg);
1577                 break;
1578             case 'p':
1579                 strcpy(global_parameters.proxy_override, arg);
1580                 break;
1581             case 's':
1582                 load_simpletargets(arg);
1583                 break;
1584             case 'd':
1585                 global_parameters.dump_records = 1;
1586                 break;
1587             default:
1588                 fprintf(stderr, "Usage: pazpar2\n"
1589                         "    -f configfile\n"
1590                         "    -h [host:]port          (REST protocol listener)\n"
1591                         "    -C cclconfig\n"
1592                         "    -s simpletargetfile\n"
1593                         "    -p hostname[:portno]    (HTTP proxy)\n"
1594                         "    -d                      (show internal records)\n");
1595                 exit(1);
1596         }
1597     }
1598
1599     if (!config)
1600     {
1601         yaz_log(YLOG_FATAL, "Load config with -f");
1602         exit(1);
1603     }
1604     global_parameters.server = config->servers;
1605
1606     start_http_listener();
1607     start_proxy();
1608     global_parameters.ccl_filter = load_cclfile("../etc/default.bib");
1609     global_parameters.yaz_marc = yaz_marc_create();
1610     yaz_marc_subfield_str(global_parameters.yaz_marc, "\t");
1611     global_parameters.odr_in = odr_createmem(ODR_DECODE);
1612     global_parameters.odr_out = odr_createmem(ODR_ENCODE);
1613
1614     event_loop(&channel_list);
1615
1616     return 0;
1617 }
1618
1619 /*
1620  * Local variables:
1621  * c-basic-offset: 4
1622  * indent-tabs-mode: nil
1623  * End:
1624  * vim: shiftwidth=4 tabstop=8 expandtab
1625  */