src/pazpar2.c

   1 /* $Id: pazpar2.c,v 1.42 2007-01-18 14:22:25 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->metadata = nmem_malloc(se->nmem,
 522             sizeof(struct record_metadata*) * service->num_metadata);
 523     memset(res->metadata, 0, sizeof(struct record_metadata*) * service->num_metadata);
 524
 525     mergekey_norm = nmem_strdup(se->nmem, (char*) mergekey);
 526     xmlFree(mergekey);
 527     normalize_mergekey(mergekey_norm, 0);
 528
 529     cluster = reclist_insert(se->reclist, res, mergekey_norm, &se->total_merged);
 530     if (global_parameters.dump_records)
 531         yaz_log(YLOG_LOG, "Cluster id %d from %s (#%d)", cluster->recid,
 532                 cl->database->url, cl->records);
 533     if (!cluster)
 534     {
 535         /* no room for record */
 536         xmlFreeDoc(xdoc);
 537         return 0;
 538     }
 539     relevance_newrec(se->relevance, cluster);
 540
 541     for (n = root->children; n; n = n->next)
 542     {
 543         if (type)
 544             xmlFree(type);
 545         if (value)
 546             xmlFree(value);
 547         type = value = 0;
 548
 549         if (n->type != XML_ELEMENT_NODE)
 550             continue;
 551         if (!strcmp(n->name, "metadata"))
 552         {
 553             struct conf_metadata *md = 0;
 554             struct conf_sortkey *sk = 0;
 555             struct record_metadata **wheretoput, *newm;
 556             int imeta;
 557             int first, last;
 558
 559             type = xmlGetProp(n, "type");
 560             value = xmlNodeListGetString(xdoc, n->children, 0);
 561
 562             if (!type || !value)
 563                 continue;
 564
 565             // First, find out what field we're looking at
 566             for (imeta = 0; imeta < service->num_metadata; imeta++)
 567                 if (!strcmp(type, service->metadata[imeta].name))
 568                 {
 569                     md = &service->metadata[imeta];
 570                     if (md->sortkey_offset >= 0)
 571                         sk = &service->sortkeys[md->sortkey_offset];
 572                     break;
 573                 }
 574             if (!md)
 575             {
 576                 yaz_log(YLOG_WARN, "Ignoring unknown metadata element: %s", type);
 577                 continue;
 578             }
 579
 580             // Find out where we are putting it
 581             if (md->merge == Metadata_merge_no)
 582                 wheretoput = &res->metadata[imeta];
 583             else
 584                 wheretoput = &cluster->metadata[imeta];
 585
 586             // Put it there
 587             newm = nmem_malloc(se->nmem, sizeof(struct record_metadata));
 588             newm->next = 0;
 589             if (md->type == Metadata_type_generic)
 590             {
 591                 char *p;
 592                 newm->data.text = nmem_strdup(se->nmem, value);
 593                 for (p = newm->data.text + strlen(newm->data.text) - 1;
 594                         p > newm->data.text && strchr(" ,/.", *p); p--)
 595                     *p = '\0';
 596
 597             }
 598             else if (md->type == Metadata_type_year)
 599             {
 600                 if (extract_years(value, &first, &last) < 0)
 601                     continue;
 602             }
 603             else
 604             {
 605                 yaz_log(YLOG_WARN, "Unknown type in metadata element %s", type);
 606                 continue;
 607             }
 608             if (md->type == Metadata_type_year && md->merge != Metadata_merge_range)
 609             {
 610                 yaz_log(YLOG_WARN, "Only range merging supported for years");
 611                 continue;
 612             }
 613             if (md->merge == Metadata_merge_unique)
 614             {
 615                 struct record_metadata *mnode;
 616                 for (mnode = *wheretoput; mnode; mnode = mnode->next)
 617                     if (!strcmp(mnode->data.text, newm->data.text))
 618                         break;
 619                 if (!mnode)
 620                 {
 621                     newm->next = *wheretoput;
 622                     *wheretoput = newm;
 623                 }
 624             }
 625             else if (md->merge == Metadata_merge_longest)
 626             {
 627                 if (!*wheretoput ||
 628                         strlen(newm->data.text) > strlen((*wheretoput)->data.text))
 629                 {
 630                     *wheretoput = newm;
 631                     if (sk)
 632                     {
 633                         char *s = nmem_strdup(se->nmem, newm->data.text);
 634                         if (!cluster->sortkeys[md->sortkey_offset])
 635                             cluster->sortkeys[md->sortkey_offset] =
 636                                 nmem_malloc(se->nmem, sizeof(union data_types));
 637                         normalize_mergekey(s,
 638                                 (sk->type == Metadata_sortkey_skiparticle));
 639                         cluster->sortkeys[md->sortkey_offset]->text = s;
 640                     }
 641                 }
 642             }
 643             else if (md->merge == Metadata_merge_all || md->merge == Metadata_merge_no)
 644             {
 645                 newm->next = *wheretoput;
 646                 *wheretoput = newm;
 647             }
 648             else if (md->merge == Metadata_merge_range)
 649             {
 650                 assert(md->type == Metadata_type_year);
 651                 if (!*wheretoput)
 652                 {
 653                     *wheretoput = newm;
 654                     (*wheretoput)->data.number.min = first;
 655                     (*wheretoput)->data.number.max = last;
 656                     if (sk)
 657                         cluster->sortkeys[md->sortkey_offset] = &newm->data;
 658                 }
 659                 else
 660                 {
 661                     if (first < (*wheretoput)->data.number.min)
 662                         (*wheretoput)->data.number.min = first;
 663                     if (last > (*wheretoput)->data.number.max)
 664                         (*wheretoput)->data.number.max = last;
 665                 }
 666 #ifdef GAGA
 667                 if (sk)
 668                 {
 669                     union data_types *sdata = cluster->sortkeys[md->sortkey_offset];
 670                     yaz_log(YLOG_LOG, "SK range: %d-%d", sdata->number.min, sdata->number.max);
 671                 }
 672 #endif
 673             }
 674             else
 675                 yaz_log(YLOG_WARN, "Don't know how to merge on element name %s", md->name);
 676
 677             if (md->rank)
 678                 relevance_countwords(se->relevance, cluster, value, md->rank);
 679             if (md->termlist)
 680             {
 681                 if (md->type == Metadata_type_year)
 682                 {
 683                     char year[64];
 684                     sprintf(year, "%d", last);
 685                     add_facet(se, type, year);
 686                     if (first != last)
 687                     {
 688                         sprintf(year, "%d", first);
 689                         add_facet(se, type, year);
 690                     }
 691                 }
 692                 else
 693                     add_facet(se, type, value);
 694             }
 695             xmlFree(type);
 696             xmlFree(value);
 697             type = value = 0;
 698         }
 699         else
 700             yaz_log(YLOG_WARN, "Unexpected element %s in internal record", n->name);
 701     }
 702     if (type)
 703         xmlFree(type);
 704     if (value)
 705         xmlFree(value);
 706
 707     xmlFreeDoc(xdoc);
 708
 709     relevance_donerecord(se->relevance, cluster);
 710     se->total_records++;
 711
 712     return res;
 713 }
 714
 715 static void ingest_records(struct client *cl, Z_Records *r)
 716 {
 717 #if USE_TIMING
 718     yaz_timing_t t = yaz_timing_create();
 719 #endif
 720     struct record *rec;
 721     struct session *s = cl->session;
 722     Z_NamePlusRecordList *rlist;
 723     int i;
 724
 725     if (r->which != Z_Records_DBOSD)
 726         return;
 727     rlist = r->u.databaseOrSurDiagnostics;
 728     for (i = 0; i < rlist->num_records; i++)
 729     {
 730         Z_NamePlusRecord *npr = rlist->records[i];
 731
 732         cl->records++;
 733         if (npr->which != Z_NamePlusRecord_databaseRecord)
 734         {
 735             yaz_log(YLOG_WARN, "Unexpected record type, probably diagnostic");
 736             continue;
 737         }
 738
 739         rec = ingest_record(cl, npr->u.databaseRecord);
 740         if (!rec)
 741             continue;
 742     }
 743     if (s->watchlist[SESSION_WATCH_RECORDS].fun && rlist->num_records)
 744         session_alert_watch(s, SESSION_WATCH_RECORDS);
 745
 746 #if USE_TIMING
 747     yaz_timing_stop(t);
 748     yaz_log(YLOG_LOG, "ingest_records %6.5f %3.2f %3.2f",
 749             yaz_timing_get_real(t), yaz_timing_get_user(t),
 750             yaz_timing_get_sys(t));
 751     yaz_timing_destroy(&t);
 752 #endif
 753 }
 754
 755 static void do_presentResponse(IOCHAN i, Z_APDU *a)
 756 {
 757     struct connection *co = iochan_getdata(i);
 758     struct client *cl = co->client;
 759     Z_PresentResponse *r = a->u.presentResponse;
 760
 761     if (r->records) {
 762         Z_Records *recs = r->records;
 763         if (recs->which == Z_Records_NSD)
 764         {
 765             yaz_log(YLOG_WARN, "Non-surrogate diagnostic");
 766             cl->diagnostic = *recs->u.nonSurrogateDiagnostic->condition;
 767             cl->state = Client_Error;
 768         }
 769     }
 770
 771     if (!*r->presentStatus && cl->state != Client_Error)
 772     {
 773         yaz_log(YLOG_DEBUG, "Good Present response");
 774         ingest_records(cl, r->records);
 775         cl->state = Client_Idle;
 776     }
 777     else if (*r->presentStatus)
 778     {
 779         yaz_log(YLOG_WARN, "Bad Present response");
 780         cl->state = Client_Error;
 781     }
 782 }
 783
 784 static void handler(IOCHAN i, int event)
 785 {
 786     struct connection *co = iochan_getdata(i);
 787     struct client *cl = co->client;
 788     struct session *se = 0;
 789
 790     if (cl)
 791         se = cl->session;
 792     else
 793     {
 794         yaz_log(YLOG_WARN, "Destroying orphan connection");
 795         connection_destroy(co);
 796         return;
 797     }
 798
 799     if (co->state == Conn_Connecting && event & EVENT_OUTPUT)
 800     {
 801         int errcode;
 802         socklen_t errlen = sizeof(errcode);
 803
 804         if (getsockopt(cs_fileno(co->link), SOL_SOCKET, SO_ERROR, &errcode,
 805             &errlen) < 0 || errcode != 0)
 806         {
 807             client_fatal(cl);
 808             return;
 809         }
 810         else
 811         {
 812             yaz_log(YLOG_DEBUG, "Connect OK");
 813             co->state = Conn_Open;
 814             if (cl)
 815                 cl->state = Client_Connected;
 816         }
 817     }
 818
 819     else if (event & EVENT_INPUT)
 820     {
 821         int len = cs_get(co->link, &co->ibuf, &co->ibufsize);
 822
 823         if (len < 0)
 824         {
 825             yaz_log(YLOG_WARN|YLOG_ERRNO, "Error reading from Z server");
 826             connection_destroy(co);
 827             return;
 828         }
 829         else if (len == 0)
 830         {
 831             yaz_log(YLOG_WARN, "EOF reading from Z server");
 832             connection_destroy(co);
 833             return;
 834         }
 835         else if (len > 1) // We discard input if we have no connection
 836         {
 837             co->state = Conn_Open;
 838
 839             if (cl && (cl->requestid == se->requestid || cl->state == Client_Initializing))
 840             {
 841                 Z_APDU *a;
 842
 843                 odr_reset(global_parameters.odr_in);
 844                 odr_setbuf(global_parameters.odr_in, co->ibuf, len, 0);
 845                 if (!z_APDU(global_parameters.odr_in, &a, 0, 0))
 846                 {
 847                     client_fatal(cl);
 848                     return;
 849                 }
 850                 switch (a->which)
 851                 {
 852                     case Z_APDU_initResponse:
 853                         do_initResponse(i, a);
 854                         break;
 855                     case Z_APDU_searchResponse:
 856                         do_searchResponse(i, a);
 857                         break;
 858                     case Z_APDU_presentResponse:
 859                         do_presentResponse(i, a);
 860                         break;
 861                     default:
 862                         yaz_log(YLOG_WARN, "Unexpected result from server");
 863                         client_fatal(cl);
 864                         return;
 865                 }
 866                 // We aren't expecting staggered output from target
 867                 // if (cs_more(t->link))
 868                 //    iochan_setevent(i, EVENT_INPUT);
 869             }
 870             else  // we throw away response and go to idle mode
 871             {
 872                 yaz_log(YLOG_DEBUG, "Ignoring result of expired operation");
 873                 cl->state = Client_Idle;
 874             }
 875         }
 876         /* if len==1 we do nothing but wait for more input */
 877     }
 878
 879     if (cl->state == Client_Connected) {
 880         send_init(i);
 881     }
 882
 883     if (cl->state == Client_Idle)
 884     {
 885         if (cl->requestid != se->requestid && *se->query) {
 886             send_search(i);
 887         }
 888         else if (cl->hits > 0 && cl->records < global_parameters.toget &&
 889             cl->records < cl->hits) {
 890             send_present(i);
 891         }
 892     }
 893 }
 894
 895 // Disassociate connection from client
 896 static void connection_release(struct connection *co)
 897 {
 898     struct client *cl = co->client;
 899
 900     yaz_log(YLOG_DEBUG, "Connection release %s", co->host->hostport);
 901     if (!cl)
 902         return;
 903     cl->connection = 0;
 904     co->client = 0;
 905 }
 906
 907 // Close connection and recycle structure
 908 static void connection_destroy(struct connection *co)
 909 {
 910     struct host *h = co->host;
 911     cs_close(co->link);
 912     iochan_destroy(co->iochan);
 913
 914     yaz_log(YLOG_DEBUG, "Connection destroy %s", co->host->hostport);
 915     if (h->connections == co)
 916         h->connections = co->next;
 917     else
 918     {
 919         struct connection *pco;
 920         for (pco = h->connections; pco && pco->next != co; pco = pco->next)
 921             ;
 922         if (pco)
 923             pco->next = co->next;
 924         else
 925             abort();
 926     }
 927     if (co->client)
 928     {
 929         if (co->client->state != Client_Idle)
 930             co->client->state = Client_Disconnected;
 931         co->client->connection = 0;
 932     }
 933     co->next = connection_freelist;
 934     connection_freelist = co;
 935 }
 936
 937 // Creates a new connection for client, associated with the host of
 938 // client's database
 939 static struct connection *connection_create(struct client *cl)
 940 {
 941     struct connection *new;
 942     COMSTACK link;
 943     int res;
 944     void *addr;
 945
 946     yaz_log(YLOG_DEBUG, "Connection create %s", cl->database->url);
 947     if (!(link = cs_create(tcpip_type, 0, PROTO_Z3950)))
 948     {
 949         yaz_log(YLOG_FATAL|YLOG_ERRNO, "Failed to create comstack");
 950         exit(1);
 951     }
 952
 953     if (!(addr = cs_straddr(link, cl->database->host->ipport)))
 954     {
 955         yaz_log(YLOG_WARN|YLOG_ERRNO, "Lookup of IP address %s failed?",
 956             cl->database->host->ipport);
 957         return 0;
 958     }
 959
 960     res = cs_connect(link, addr);
 961     if (res < 0)
 962     {
 963         yaz_log(YLOG_WARN|YLOG_ERRNO, "cs_connect %s", cl->database->url);
 964         return 0;
 965     }
 966
 967     if ((new = connection_freelist))
 968         connection_freelist = new->next;
 969     else
 970     {
 971         new = xmalloc(sizeof (struct connection));
 972         new->ibuf = 0;
 973         new->ibufsize = 0;
 974     }
 975     new->state = Conn_Connecting;
 976     new->host = cl->database->host;
 977     new->next = new->host->connections;
 978     new->host->connections = new;
 979     new->client = cl;
 980     cl->connection = new;
 981     new->link = link;
 982
 983     new->iochan = iochan_create(cs_fileno(link), handler, 0);
 984     iochan_setdata(new->iochan, new);
 985     new->iochan->next = channel_list;
 986     channel_list = new->iochan;
 987     return new;
 988 }
 989
 990 // Close connection and set state to error
 991 static void client_fatal(struct client *cl)
 992 {
 993     yaz_log(YLOG_WARN, "Fatal error from %s", cl->database->url);
 994     connection_destroy(cl->connection);
 995     cl->state = Client_Error;
 996 }
 997
 998 // Ensure that client has a connection associated
 999 static int client_prep_connection(struct client *cl)
1000 {
1001     struct connection *co;
1002     struct session *se = cl->session;
1003     struct host *host = cl->database->host;
1004
1005     co = cl->connection;
1006
1007     yaz_log(YLOG_DEBUG, "Client prep %s", cl->database->url);
1008
1009     if (!co)
1010     {
1011         // See if someone else has an idle connection
1012         // We should look at timestamps here to select the longest-idle connection
1013         for (co = host->connections; co; co = co->next)
1014             if (co->state == Conn_Open && (!co->client || co->client->session != se))
1015                 break;
1016         if (co)
1017         {
1018             connection_release(co);
1019             cl->connection = co;
1020             co->client = cl;
1021         }
1022         else
1023             co = connection_create(cl);
1024     }
1025     if (co)
1026     {
1027         if (co->state == Conn_Connecting)
1028         {
1029             cl->state = Client_Connecting;
1030             iochan_setflag(co->iochan, EVENT_OUTPUT);
1031         }
1032         else if (co->state == Conn_Open)
1033         {
1034             if (cl->state == Client_Error || cl->state == Client_Disconnected)
1035                 cl->state = Client_Idle;
1036             iochan_setflag(co->iochan, EVENT_OUTPUT);
1037         }
1038         return 1;
1039     }
1040     else
1041         return 0;
1042 }
1043
1044 // This function will most likely vanish when a proper target profile mechanism is
1045 // introduced.
1046 void load_simpletargets(const char *fn)
1047 {
1048     FILE *f = fopen(fn, "r");
1049     char line[256];
1050
1051     if (!f)
1052     {
1053         yaz_log(YLOG_WARN|YLOG_ERRNO, "open %s", fn);
1054         exit(1);
1055     }
1056
1057     while (fgets(line, 255, f))
1058     {
1059         char *url, *db;
1060         struct host *host;
1061         struct database *database;
1062
1063         if (strncmp(line, "target ", 7))
1064             continue;
1065         url = line + 7;
1066         url[strlen(url) - 1] = '\0';
1067         yaz_log(YLOG_DEBUG, "Target: %s", url);
1068         if ((db = strchr(url, '/')))
1069             *(db++) = '\0';
1070         else
1071             db = "Default";
1072
1073         for (host = hosts; host; host = host->next)
1074             if (!strcmp(url, host->hostport))
1075                 break;
1076         if (!host)
1077         {
1078             struct addrinfo *addrinfo, hints;
1079             char *port;
1080             char ipport[128];
1081             unsigned char addrbuf[4];
1082             int res;
1083
1084             host = xmalloc(sizeof(struct host));
1085             host->hostport = xstrdup(url);
1086             host->connections = 0;
1087
1088             if ((port = strchr(url, ':')))
1089                 *(port++) = '\0';
1090             else
1091                 port = "210";
1092
1093             hints.ai_flags = 0;
1094             hints.ai_family = PF_INET;
1095             hints.ai_socktype = SOCK_STREAM;
1096             hints.ai_protocol = IPPROTO_TCP;
1097             hints.ai_addrlen = 0;
1098             hints.ai_addr = 0;
1099             hints.ai_canonname = 0;
1100             hints.ai_next = 0;
1101             // This is not robust code. It assumes that getaddrinfo returns AF_INET
1102             // address.
1103             if ((res = getaddrinfo(url, port, &hints, &addrinfo)))
1104             {
1105                 yaz_log(YLOG_WARN, "Failed to resolve %s: %s", url, gai_strerror(res));
1106                 xfree(host->hostport);
1107                 xfree(host);
1108                 continue;
1109             }
1110             assert(addrinfo->ai_family == PF_INET);
1111             memcpy(addrbuf, &((struct sockaddr_in*)addrinfo->ai_addr)->sin_addr.s_addr, 4);
1112             sprintf(ipport, "%u.%u.%u.%u:%s",
1113                     addrbuf[0], addrbuf[1], addrbuf[2], addrbuf[3], port);
1114             host->ipport = xstrdup(ipport);
1115             freeaddrinfo(addrinfo);
1116             host->next = hosts;
1117             hosts = host;
1118         }
1119         database = xmalloc(sizeof(struct database));
1120         database->host = host;
1121         database->url = xmalloc(strlen(url) + strlen(db) + 2);
1122         strcpy(database->url, url);
1123         strcat(database->url, "/");
1124         strcat(database->url, db);
1125
1126         database->databases = xmalloc(2 * sizeof(char *));
1127         database->databases[0] = xstrdup(db);
1128         database->databases[1] = 0;
1129         database->errors = 0;
1130         database->qprofile = 0;
1131         database->rprofile = database_retrieval_profile(database);
1132         database->next = databases;
1133         databases = database;
1134
1135     }
1136     fclose(f);
1137 }
1138
1139 static void pull_terms(NMEM nmem, struct ccl_rpn_node *n, char **termlist, int *num)
1140 {
1141     switch (n->kind)
1142     {
1143         case CCL_RPN_AND:
1144         case CCL_RPN_OR:
1145         case CCL_RPN_NOT:
1146         case CCL_RPN_PROX:
1147             pull_terms(nmem, n->u.p[0], termlist, num);
1148             pull_terms(nmem, n->u.p[1], termlist, num);
1149             break;
1150         case CCL_RPN_TERM:
1151             termlist[(*num)++] = nmem_strdup(nmem, n->u.t.term);
1152             break;
1153         default: // NOOP
1154             break;
1155     }
1156 }
1157
1158 // Extract terms from query into null-terminated termlist
1159 static int extract_terms(NMEM nmem, char *query, char **termlist)
1160 {
1161     int error, pos;
1162     struct ccl_rpn_node *n;
1163     int num = 0;
1164
1165     n = ccl_find_str(global_parameters.ccl_filter, query, &error, &pos);
1166     if (!n)
1167         return -1;
1168     pull_terms(nmem, n, termlist, &num);
1169     termlist[num] = 0;
1170     ccl_rpn_delete(n);
1171     return 0;
1172 }
1173
1174 static struct client *client_create(void)
1175 {
1176     struct client *r;
1177     if (client_freelist)
1178     {
1179         r = client_freelist;
1180         client_freelist = client_freelist->next;
1181     }
1182     else
1183         r = xmalloc(sizeof(struct client));
1184     r->database = 0;
1185     r->connection = 0;
1186     r->session = 0;
1187     r->hits = 0;
1188     r->records = 0;
1189     r->setno = 0;
1190     r->requestid = -1;
1191     r->diagnostic = 0;
1192     r->state = Client_Disconnected;
1193     r->next = 0;
1194     return r;
1195 }
1196
1197 void client_destroy(struct client *c)
1198 {
1199     struct session *se = c->session;
1200     if (c == se->clients)
1201         se->clients = c->next;
1202     else
1203     {
1204         struct client *cc;
1205         for (cc = se->clients; cc && cc->next != c; cc = cc->next)
1206             ;
1207         if (cc)
1208             cc->next = c->next;
1209     }
1210     if (c->connection)
1211         connection_release(c->connection);
1212     c->next = client_freelist;
1213     client_freelist = c;
1214 }
1215
1216 void session_set_watch(struct session *s, int what, session_watchfun fun, void *data)
1217 {
1218     s->watchlist[what].fun = fun;
1219     s->watchlist[what].data = data;
1220 }
1221
1222 void session_alert_watch(struct session *s, int what)
1223 {
1224     if (!s->watchlist[what].fun)
1225         return;
1226     (*s->watchlist[what].fun)(s->watchlist[what].data);
1227     s->watchlist[what].fun = 0;
1228     s->watchlist[what].data = 0;
1229 }
1230
1231 // This needs to be extended with selection criteria
1232 static struct conf_retrievalprofile *database_retrieval_profile(struct database *db)
1233 {
1234     if (!config)
1235     {
1236         yaz_log(YLOG_FATAL, "Must load configuration (-f)");
1237         exit(1);
1238     }
1239     if (!config->retrievalprofiles)
1240     {
1241         yaz_log(YLOG_FATAL, "No retrieval profiles defined");
1242     }
1243     return config->retrievalprofiles;
1244 }
1245
1246 // This should be extended with parameters to control selection criteria
1247 // Associates a set of clients with a session;
1248 int select_targets(struct session *se)
1249 {
1250     struct database *db;
1251     int c = 0;
1252
1253     while (se->clients)
1254         client_destroy(se->clients);
1255     for (db = databases; db; db = db->next)
1256     {
1257         struct client *cl = client_create();
1258         cl->database = db;
1259         cl->session = se;
1260         cl->next = se->clients;
1261         se->clients = cl;
1262         c++;
1263     }
1264     return c;
1265 }
1266
1267 int session_active_clients(struct session *s)
1268 {
1269     struct client *c;
1270     int res = 0;
1271
1272     for (c = s->clients; c; c = c->next)
1273         if (c->connection && (c->state == Client_Connecting ||
1274                     c->state == Client_Initializing ||
1275                     c->state == Client_Searching ||
1276                     c->state == Client_Presenting))
1277             res++;
1278
1279     return res;
1280 }
1281
1282 char *search(struct session *se, char *query)
1283 {
1284     int live_channels = 0;
1285     struct client *cl;
1286
1287     yaz_log(YLOG_DEBUG, "Search");
1288
1289     strcpy(se->query, query);
1290     se->requestid++;
1291     nmem_reset(se->nmem);
1292     for (cl = se->clients; cl; cl = cl->next)
1293     {
1294         cl->hits = -1;
1295         cl->records = 0;
1296         cl->diagnostic = 0;
1297
1298         if (client_prep_connection(cl))
1299             live_channels++;
1300     }
1301     if (live_channels)
1302     {
1303         char *p[512];
1304         int maxrecs = live_channels * global_parameters.toget;
1305         se->num_termlists = 0;
1306         se->reclist = reclist_create(se->nmem, maxrecs);
1307         extract_terms(se->nmem, query, p);
1308         se->relevance = relevance_create(se->nmem, (const char **) p, maxrecs);
1309         se->total_records = se->total_hits = se->total_merged = 0;
1310         se->expected_maxrecs = maxrecs;
1311     }
1312     else
1313         return "NOTARGETS";
1314
1315     return 0;
1316 }
1317
1318 void destroy_session(struct session *s)
1319 {
1320     yaz_log(YLOG_LOG, "Destroying session");
1321     while (s->clients)
1322         client_destroy(s->clients);
1323     nmem_destroy(s->nmem);
1324     wrbuf_free(s->wrbuf, 1);
1325 }
1326
1327 struct session *new_session()
1328 {
1329     int i;
1330     struct session *session = xmalloc(sizeof(*session));
1331
1332     yaz_log(YLOG_DEBUG, "New pazpar2 session");
1333
1334     session->total_hits = 0;
1335     session->total_records = 0;
1336     session->num_termlists = 0;
1337     session->reclist = 0;
1338     session->requestid = -1;
1339     session->clients = 0;
1340     session->expected_maxrecs = 0;
1341     session->query[0] = '\0';
1342     session->nmem = nmem_create();
1343     session->wrbuf = wrbuf_alloc();
1344     for (i = 0; i <= SESSION_WATCH_MAX; i++)
1345     {
1346         session->watchlist[i].data = 0;
1347         session->watchlist[i].fun = 0;
1348     }
1349
1350     select_targets(session);
1351
1352     return session;
1353 }
1354
1355 struct hitsbytarget *hitsbytarget(struct session *se, int *count)
1356 {
1357     static struct hitsbytarget res[1000]; // FIXME MM
1358     struct client *cl;
1359
1360     *count = 0;
1361     for (cl = se->clients; cl; cl = cl->next)
1362     {
1363         strcpy(res[*count].id, cl->database->host->hostport);
1364         res[*count].hits = cl->hits;
1365         res[*count].records = cl->records;
1366         res[*count].diagnostic = cl->diagnostic;
1367         res[*count].state = client_states[cl->state];
1368         res[*count].connected  = cl->connection ? 1 : 0;
1369         (*count)++;
1370     }
1371
1372     return res;
1373 }
1374
1375 struct termlist_score **termlist(struct session *s, const char *name, int *num)
1376 {
1377     int i;
1378
1379     for (i = 0; i < s->num_termlists; i++)
1380         if (!strcmp(s->termlists[i].name, name))
1381             return termlist_highscore(s->termlists[i].termlist, num);
1382     return 0;
1383 }
1384
1385 #ifdef MISSING_HEADERS
1386 void report_nmem_stats(void)
1387 {
1388     size_t in_use, is_free;
1389
1390     nmem_get_memory_in_use(&in_use);
1391     nmem_get_memory_free(&is_free);
1392
1393     yaz_log(YLOG_LOG, "nmem stat: use=%ld free=%ld",
1394             (long) in_use, (long) is_free);
1395 }
1396 #endif
1397
1398 struct record_cluster *show_single(struct session *s, int id)
1399 {
1400     struct record_cluster *r;
1401
1402     reclist_rewind(s->reclist);
1403     while ((r = reclist_read_record(s->reclist)))
1404         if (r->recid == id)
1405             return r;
1406     return 0;
1407 }
1408
1409 struct record_cluster **show(struct session *s, struct reclist_sortparms *sp, int start,
1410         int *num, int *total, int *sumhits, NMEM nmem_show)
1411 {
1412     struct record_cluster **recs = nmem_malloc(nmem_show, *num
1413                                        * sizeof(struct record_cluster *));
1414     struct reclist_sortparms *spp;
1415     int i;
1416 #if USE_TIMING
1417     yaz_timing_t t = yaz_timing_create();
1418 #endif
1419
1420     for (spp = sp; spp; spp = spp->next)
1421         if (spp->type == Metadata_sortkey_relevance)
1422         {
1423             relevance_prepare_read(s->relevance, s->reclist);
1424             break;
1425         }
1426     reclist_sort(s->reclist, sp);
1427
1428     *total = s->reclist->num_records;
1429     *sumhits = s->total_hits;
1430
1431     for (i = 0; i < start; i++)
1432         if (!reclist_read_record(s->reclist))
1433         {
1434             *num = 0;
1435             recs = 0;
1436             break;
1437         }
1438
1439     for (i = 0; i < *num; i++)
1440     {
1441         struct record_cluster *r = reclist_read_record(s->reclist);
1442         if (!r)
1443         {
1444             *num = i;
1445             break;
1446         }
1447         recs[i] = r;
1448     }
1449 #if USE_TIMING
1450     yaz_timing_stop(t);
1451     yaz_log(YLOG_LOG, "show %6.5f %3.2f %3.2f",
1452             yaz_timing_get_real(t), yaz_timing_get_user(t),
1453             yaz_timing_get_sys(t));
1454     yaz_timing_destroy(&t);
1455 #endif
1456     return recs;
1457 }
1458
1459 void statistics(struct session *se, struct statistics *stat)
1460 {
1461     struct client *cl;
1462     int count = 0;
1463
1464     memset(stat, 0, sizeof(*stat));
1465     for (cl = se->clients; cl; cl = cl->next)
1466     {
1467         if (!cl->connection)
1468             stat->num_no_connection++;
1469         switch (cl->state)
1470         {
1471             case Client_Connecting: stat->num_connecting++; break;
1472             case Client_Initializing: stat->num_initializing++; break;
1473             case Client_Searching: stat->num_searching++; break;
1474             case Client_Presenting: stat->num_presenting++; break;
1475             case Client_Idle: stat->num_idle++; break;
1476             case Client_Failed: stat->num_failed++; break;
1477             case Client_Error: stat->num_error++; break;
1478             default: break;
1479         }
1480         count++;
1481     }
1482     stat->num_hits = se->total_hits;
1483     stat->num_records = se->total_records;
1484
1485     stat->num_clients = count;
1486 }
1487
1488 static CCL_bibset load_cclfile(const char *fn)
1489 {
1490     CCL_bibset res = ccl_qual_mk();
1491     if (ccl_qual_fname(res, fn) < 0)
1492     {
1493         yaz_log(YLOG_FATAL|YLOG_ERRNO, "%s", fn);
1494         exit(1);
1495     }
1496     return res;
1497 }
1498
1499 static void start_http_listener(void)
1500 {
1501     char hp[128] = "";
1502     struct conf_server *ser = global_parameters.server;
1503
1504     if (*global_parameters.listener_override)
1505         strcpy(hp, global_parameters.listener_override);
1506     else
1507     {
1508         strcpy(hp, ser->host ? ser->host : "");
1509         if (ser->port)
1510         {
1511             if (*hp)
1512                 strcat(hp, ":");
1513             sprintf(hp + strlen(hp), "%d", ser->port);
1514         }
1515     }
1516     http_init(hp);
1517 }
1518
1519 static void start_proxy(void)
1520 {
1521     char hp[128] = "";
1522     struct conf_server *ser = global_parameters.server;
1523
1524     if (*global_parameters.proxy_override)
1525         strcpy(hp, global_parameters.proxy_override);
1526     else if (ser->proxy_host || ser->proxy_port)
1527     {
1528         strcpy(hp, ser->proxy_host ? ser->proxy_host : "");
1529         if (ser->proxy_port)
1530         {
1531             if (*hp)
1532                 strcat(hp, ":");
1533             sprintf(hp + strlen(hp), "%d", ser->proxy_port);
1534         }
1535     }
1536     else
1537         return;
1538
1539     http_set_proxyaddr(hp);
1540 }
1541
1542 int main(int argc, char **argv)
1543 {
1544     int ret;
1545     char *arg;
1546
1547     if (signal(SIGPIPE, SIG_IGN) == SIG_ERR)
1548         yaz_log(YLOG_WARN|YLOG_ERRNO, "signal");
1549
1550     yaz_log_init(YLOG_DEFAULT_LEVEL, "pazpar2", 0);
1551
1552     while ((ret = options("f:x:h:p:C:s:d", argv, argc, &arg)) != -2)
1553     {
1554         switch (ret) {
1555             case 'f':
1556                 if (!read_config(arg))
1557                     exit(1);
1558                 break;
1559             case 'h':
1560                 strcpy(global_parameters.listener_override, arg);
1561                 break;
1562             case 'C':
1563                 global_parameters.ccl_filter = load_cclfile(arg);
1564                 break;
1565             case 'p':
1566                 strcpy(global_parameters.proxy_override, arg);
1567                 break;
1568             case 's':
1569                 load_simpletargets(arg);
1570                 break;
1571             case 'd':
1572                 global_parameters.dump_records = 1;
1573                 break;
1574             default:
1575                 fprintf(stderr, "Usage: pazpar2\n"
1576                         "    -f configfile\n"
1577                         "    -h [host:]port          (REST protocol listener)\n"
1578                         "    -C cclconfig\n"
1579                         "    -s simpletargetfile\n"
1580                         "    -p hostname[:portno]    (HTTP proxy)\n"
1581                         "    -d                      (show internal records)\n");
1582                 exit(1);
1583         }
1584     }
1585
1586     if (!config)
1587     {
1588         yaz_log(YLOG_FATAL, "Load config with -f");
1589         exit(1);
1590     }
1591     global_parameters.server = config->servers;
1592
1593     start_http_listener();
1594     start_proxy();
1595     global_parameters.ccl_filter = load_cclfile("../etc/default.bib");
1596     global_parameters.yaz_marc = yaz_marc_create();
1597     yaz_marc_subfield_str(global_parameters.yaz_marc, "\t");
1598     global_parameters.odr_in = odr_createmem(ODR_DECODE);
1599     global_parameters.odr_out = odr_createmem(ODR_ENCODE);
1600
1601     event_loop(&channel_list);
1602
1603     return 0;
1604 }
1605
1606 /*
1607  * Local variables:
1608  * c-basic-offset: 4
1609  * indent-tabs-mode: nil
1610  * End:
1611  * vim: shiftwidth=4 tabstop=8 expandtab
1612  */