src/pazpar2.c

   1 /* $Id: pazpar2.c,v 1.46 2007-01-26 19:30:51 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.searchRequest->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 static xmlDoc *normalize_record(struct client *cl, Z_External *rec)
 389 {
 390     struct conf_retrievalprofile *rprofile = cl->database->rprofile;
 391     struct conf_retrievalmap *m;
 392     xmlNode *res;
 393     xmlDoc *rdoc;
 394
 395     // First normalize to XML
 396     if (rprofile->native_syntax == Nativesyn_iso2709)
 397     {
 398         char *buf;
 399         int len;
 400         if (rec->which != Z_External_octet)
 401         {
 402             yaz_log(YLOG_WARN, "Unexpected external branch, probably BER");
 403             return 0;
 404         }
 405         buf = (char*) rec->u.octet_aligned->buf;
 406         len = rec->u.octet_aligned->len;
 407         if (yaz_marc_read_iso2709(rprofile->yaz_marc, buf, len) < 0)
 408         {
 409             yaz_log(YLOG_WARN, "Failed to decode MARC");
 410             return 0;
 411         }
 412         if (yaz_marc_write_xml(rprofile->yaz_marc, &res,
 413                     "http://www.loc.gov/MARC21/slim", 0, 0) < 0)
 414         {
 415             yaz_log(YLOG_WARN, "Failed to encode as XML");
 416             return 0;
 417         }
 418         rdoc = xmlNewDoc("1.0");
 419         xmlDocSetRootElement(rdoc, res);
 420     }
 421     else
 422     {
 423         yaz_log(YLOG_FATAL, "Unknown native_syntax in normalize_record");
 424         exit(1);
 425     }
 426
 427     if (global_parameters.dump_records)
 428     {
 429         fprintf(stderr, "Input Record (normalized):\n----------------\n");
 430 #if LIBXML_VERSION >= 20600
 431         xmlDocFormatDump(stderr, rdoc, 1);
 432 #else
 433         xmlDocDump(stderr, rdoc);
 434 #endif
 435     }
 436
 437     for (m = rprofile->maplist; m; m = m->next)
 438     {
 439         xmlDoc *new;
 440         if (m->type != Map_xslt)
 441         {
 442             yaz_log(YLOG_WARN, "Unknown map type");
 443             return 0;
 444         }
 445         if (!(new = xsltApplyStylesheet(m->stylesheet, rdoc, 0)))
 446         {
 447             yaz_log(YLOG_WARN, "XSLT transformation failed");
 448             return 0;
 449         }
 450         xmlFreeDoc(rdoc);
 451         rdoc = new;
 452     }
 453     if (global_parameters.dump_records)
 454     {
 455         fprintf(stderr, "Record:\n----------------\n");
 456 #if LIBXML_VERSION >= 20600
 457         xmlDocFormatDump(stderr, rdoc, 1);
 458 #else
 459         xmlDocDump(stderr, rdoc);
 460 #endif
 461     }
 462     return rdoc;
 463 }
 464
 465 // Extract what appears to be years from buf, storing highest and
 466 // lowest values.
 467 static int extract_years(const char *buf, int *first, int *last)
 468 {
 469     *first = -1;
 470     *last = -1;
 471     while (*buf)
 472     {
 473         const char *e;
 474         int len;
 475
 476         while (*buf && !isdigit(*buf))
 477             buf++;
 478         len = 0;
 479         for (e = buf; *e && isdigit(*e); e++)
 480             len++;
 481         if (len == 4)
 482         {
 483             int value = atoi(buf);
 484             if (*first < 0 || value < *first)
 485                 *first = value;
 486             if (*last < 0 || value > *last)
 487                 *last = value;
 488         }
 489         buf = e;
 490     }
 491     return *first;
 492 }
 493
 494 static struct record *ingest_record(struct client *cl, Z_External *rec)
 495 {
 496     xmlDoc *xdoc = normalize_record(cl, rec);
 497     xmlNode *root, *n;
 498     struct record *res;
 499     struct record_cluster *cluster;
 500     struct session *se = cl->session;
 501     xmlChar *mergekey, *mergekey_norm;
 502     xmlChar *type = 0;
 503     xmlChar *value = 0;
 504     struct conf_service *service = global_parameters.server->service;
 505
 506     if (!xdoc)
 507         return 0;
 508
 509     root = xmlDocGetRootElement(xdoc);
 510     if (!(mergekey = xmlGetProp(root, "mergekey")))
 511     {
 512         yaz_log(YLOG_WARN, "No mergekey found in record");
 513         xmlFreeDoc(xdoc);
 514         return 0;
 515     }
 516
 517     res = nmem_malloc(se->nmem, sizeof(struct record));
 518     res->next = 0;
 519     res->client = cl;
 520     res->metadata = nmem_malloc(se->nmem,
 521             sizeof(struct record_metadata*) * service->num_metadata);
 522     memset(res->metadata, 0, sizeof(struct record_metadata*) * service->num_metadata);
 523
 524     mergekey_norm = nmem_strdup(se->nmem, (char*) mergekey);
 525     xmlFree(mergekey);
 526     normalize_mergekey(mergekey_norm, 0);
 527
 528     cluster = reclist_insert(se->reclist, res, mergekey_norm, &se->total_merged);
 529     if (global_parameters.dump_records)
 530         yaz_log(YLOG_LOG, "Cluster id %d from %s (#%d)", cluster->recid,
 531                 cl->database->url, cl->records);
 532     if (!cluster)
 533     {
 534         /* no room for record */
 535         xmlFreeDoc(xdoc);
 536         return 0;
 537     }
 538     relevance_newrec(se->relevance, cluster);
 539
 540     for (n = root->children; n; n = n->next)
 541     {
 542         if (type)
 543             xmlFree(type);
 544         if (value)
 545             xmlFree(value);
 546         type = value = 0;
 547
 548         if (n->type != XML_ELEMENT_NODE)
 549             continue;
 550         if (!strcmp(n->name, "metadata"))
 551         {
 552             struct conf_metadata *md = 0;
 553             struct conf_sortkey *sk = 0;
 554             struct record_metadata **wheretoput, *newm;
 555             int imeta;
 556             int first, last;
 557
 558             type = xmlGetProp(n, "type");
 559             value = xmlNodeListGetString(xdoc, n->children, 0);
 560
 561             if (!type || !value)
 562                 continue;
 563
 564             // First, find out what field we're looking at
 565             for (imeta = 0; imeta < service->num_metadata; imeta++)
 566                 if (!strcmp(type, service->metadata[imeta].name))
 567                 {
 568                     md = &service->metadata[imeta];
 569                     if (md->sortkey_offset >= 0)
 570                         sk = &service->sortkeys[md->sortkey_offset];
 571                     break;
 572                 }
 573             if (!md)
 574             {
 575                 yaz_log(YLOG_WARN, "Ignoring unknown metadata element: %s", type);
 576                 continue;
 577             }
 578
 579             // Find out where we are putting it
 580             if (md->merge == Metadata_merge_no)
 581                 wheretoput = &res->metadata[imeta];
 582             else
 583                 wheretoput = &cluster->metadata[imeta];
 584
 585             // Put it there
 586             newm = nmem_malloc(se->nmem, sizeof(struct record_metadata));
 587             newm->next = 0;
 588             if (md->type == Metadata_type_generic)
 589             {
 590                 char *p, *pe;
 591                 for (p = value; *p && isspace(*p); p++)
 592                     ;
 593                 for (pe = p + strlen(p) - 1;
 594                         pe > p && strchr(" ,/.:([", *pe); pe--)
 595                     *pe = '\0';
 596                 newm->data.text = nmem_strdup(se->nmem, p);
 597
 598             }
 599             else if (md->type == Metadata_type_year)
 600             {
 601                 if (extract_years(value, &first, &last) < 0)
 602                     continue;
 603             }
 604             else
 605             {
 606                 yaz_log(YLOG_WARN, "Unknown type in metadata element %s", type);
 607                 continue;
 608             }
 609             if (md->type == Metadata_type_year && md->merge != Metadata_merge_range)
 610             {
 611                 yaz_log(YLOG_WARN, "Only range merging supported for years");
 612                 continue;
 613             }
 614             if (md->merge == Metadata_merge_unique)
 615             {
 616                 struct record_metadata *mnode;
 617                 for (mnode = *wheretoput; mnode; mnode = mnode->next)
 618                     if (!strcmp(mnode->data.text, newm->data.text))
 619                         break;
 620                 if (!mnode)
 621                 {
 622                     newm->next = *wheretoput;
 623                     *wheretoput = newm;
 624                 }
 625             }
 626             else if (md->merge == Metadata_merge_longest)
 627             {
 628                 if (!*wheretoput ||
 629                         strlen(newm->data.text) > strlen((*wheretoput)->data.text))
 630                 {
 631                     *wheretoput = newm;
 632                     if (sk)
 633                     {
 634                         char *s = nmem_strdup(se->nmem, newm->data.text);
 635                         if (!cluster->sortkeys[md->sortkey_offset])
 636                             cluster->sortkeys[md->sortkey_offset] =
 637                                 nmem_malloc(se->nmem, sizeof(union data_types));
 638                         normalize_mergekey(s,
 639                                 (sk->type == Metadata_sortkey_skiparticle));
 640                         cluster->sortkeys[md->sortkey_offset]->text = s;
 641                     }
 642                 }
 643             }
 644             else if (md->merge == Metadata_merge_all || md->merge == Metadata_merge_no)
 645             {
 646                 newm->next = *wheretoput;
 647                 *wheretoput = newm;
 648             }
 649             else if (md->merge == Metadata_merge_range)
 650             {
 651                 assert(md->type == Metadata_type_year);
 652                 if (!*wheretoput)
 653                 {
 654                     *wheretoput = newm;
 655                     (*wheretoput)->data.number.min = first;
 656                     (*wheretoput)->data.number.max = last;
 657                     if (sk)
 658                         cluster->sortkeys[md->sortkey_offset] = &newm->data;
 659                 }
 660                 else
 661                 {
 662                     if (first < (*wheretoput)->data.number.min)
 663                         (*wheretoput)->data.number.min = first;
 664                     if (last > (*wheretoput)->data.number.max)
 665                         (*wheretoput)->data.number.max = last;
 666                 }
 667 #ifdef GAGA
 668                 if (sk)
 669                 {
 670                     union data_types *sdata = cluster->sortkeys[md->sortkey_offset];
 671                     yaz_log(YLOG_LOG, "SK range: %d-%d", sdata->number.min, sdata->number.max);
 672                 }
 673 #endif
 674             }
 675             else
 676                 yaz_log(YLOG_WARN, "Don't know how to merge on element name %s", md->name);
 677
 678             if (md->rank)
 679                 relevance_countwords(se->relevance, cluster, value, md->rank);
 680             if (md->termlist)
 681             {
 682                 if (md->type == Metadata_type_year)
 683                 {
 684                     char year[64];
 685                     sprintf(year, "%d", last);
 686                     add_facet(se, type, year);
 687                     if (first != last)
 688                     {
 689                         sprintf(year, "%d", first);
 690                         add_facet(se, type, year);
 691                     }
 692                 }
 693                 else
 694                     add_facet(se, type, value);
 695             }
 696             xmlFree(type);
 697             xmlFree(value);
 698             type = value = 0;
 699         }
 700         else
 701             yaz_log(YLOG_WARN, "Unexpected element %s in internal record", n->name);
 702     }
 703     if (type)
 704         xmlFree(type);
 705     if (value)
 706         xmlFree(value);
 707
 708     xmlFreeDoc(xdoc);
 709
 710     relevance_donerecord(se->relevance, cluster);
 711     se->total_records++;
 712
 713     return res;
 714 }
 715
 716 static void ingest_records(struct client *cl, Z_Records *r)
 717 {
 718 #if USE_TIMING
 719     yaz_timing_t t = yaz_timing_create();
 720 #endif
 721     struct record *rec;
 722     struct session *s = cl->session;
 723     Z_NamePlusRecordList *rlist;
 724     int i;
 725
 726     if (r->which != Z_Records_DBOSD)
 727         return;
 728     rlist = r->u.databaseOrSurDiagnostics;
 729     for (i = 0; i < rlist->num_records; i++)
 730     {
 731         Z_NamePlusRecord *npr = rlist->records[i];
 732
 733         cl->records++;
 734         if (npr->which != Z_NamePlusRecord_databaseRecord)
 735         {
 736             yaz_log(YLOG_WARN, "Unexpected record type, probably diagnostic");
 737             continue;
 738         }
 739
 740         rec = ingest_record(cl, npr->u.databaseRecord);
 741         if (!rec)
 742             continue;
 743     }
 744     if (s->watchlist[SESSION_WATCH_RECORDS].fun && rlist->num_records)
 745         session_alert_watch(s, SESSION_WATCH_RECORDS);
 746
 747 #if USE_TIMING
 748     yaz_timing_stop(t);
 749     yaz_log(YLOG_LOG, "ingest_records %6.5f %3.2f %3.2f",
 750             yaz_timing_get_real(t), yaz_timing_get_user(t),
 751             yaz_timing_get_sys(t));
 752     yaz_timing_destroy(&t);
 753 #endif
 754 }
 755
 756 static void do_presentResponse(IOCHAN i, Z_APDU *a)
 757 {
 758     struct connection *co = iochan_getdata(i);
 759     struct client *cl = co->client;
 760     Z_PresentResponse *r = a->u.presentResponse;
 761
 762     if (r->records) {
 763         Z_Records *recs = r->records;
 764         if (recs->which == Z_Records_NSD)
 765         {
 766             yaz_log(YLOG_WARN, "Non-surrogate diagnostic");
 767             cl->diagnostic = *recs->u.nonSurrogateDiagnostic->condition;
 768             cl->state = Client_Error;
 769         }
 770     }
 771
 772     if (!*r->presentStatus && cl->state != Client_Error)
 773     {
 774         yaz_log(YLOG_DEBUG, "Good Present response");
 775         ingest_records(cl, r->records);
 776         cl->state = Client_Idle;
 777     }
 778     else if (*r->presentStatus)
 779     {
 780         yaz_log(YLOG_WARN, "Bad Present response");
 781         cl->state = Client_Error;
 782     }
 783 }
 784
 785 static void handler(IOCHAN i, int event)
 786 {
 787     struct connection *co = iochan_getdata(i);
 788     struct client *cl = co->client;
 789     struct session *se = 0;
 790
 791     if (cl)
 792         se = cl->session;
 793     else
 794     {
 795         yaz_log(YLOG_WARN, "Destroying orphan connection");
 796         connection_destroy(co);
 797         return;
 798     }
 799
 800     if (co->state == Conn_Connecting && event & EVENT_OUTPUT)
 801     {
 802         int errcode;
 803         socklen_t errlen = sizeof(errcode);
 804
 805         if (getsockopt(cs_fileno(co->link), SOL_SOCKET, SO_ERROR, &errcode,
 806             &errlen) < 0 || errcode != 0)
 807         {
 808             client_fatal(cl);
 809             return;
 810         }
 811         else
 812         {
 813             yaz_log(YLOG_DEBUG, "Connect OK");
 814             co->state = Conn_Open;
 815             if (cl)
 816                 cl->state = Client_Connected;
 817         }
 818     }
 819
 820     else if (event & EVENT_INPUT)
 821     {
 822         int len = cs_get(co->link, &co->ibuf, &co->ibufsize);
 823
 824         if (len < 0)
 825         {
 826             yaz_log(YLOG_WARN|YLOG_ERRNO, "Error reading from Z server");
 827             connection_destroy(co);
 828             return;
 829         }
 830         else if (len == 0)
 831         {
 832             yaz_log(YLOG_WARN, "EOF reading from Z server");
 833             connection_destroy(co);
 834             return;
 835         }
 836         else if (len > 1) // We discard input if we have no connection
 837         {
 838             co->state = Conn_Open;
 839
 840             if (cl && (cl->requestid == se->requestid || cl->state == Client_Initializing))
 841             {
 842                 Z_APDU *a;
 843
 844                 odr_reset(global_parameters.odr_in);
 845                 odr_setbuf(global_parameters.odr_in, co->ibuf, len, 0);
 846                 if (!z_APDU(global_parameters.odr_in, &a, 0, 0))
 847                 {
 848                     client_fatal(cl);
 849                     return;
 850                 }
 851                 switch (a->which)
 852                 {
 853                     case Z_APDU_initResponse:
 854                         do_initResponse(i, a);
 855                         break;
 856                     case Z_APDU_searchResponse:
 857                         do_searchResponse(i, a);
 858                         break;
 859                     case Z_APDU_presentResponse:
 860                         do_presentResponse(i, a);
 861                         break;
 862                     default:
 863                         yaz_log(YLOG_WARN, "Unexpected result from server");
 864                         client_fatal(cl);
 865                         return;
 866                 }
 867                 // We aren't expecting staggered output from target
 868                 // if (cs_more(t->link))
 869                 //    iochan_setevent(i, EVENT_INPUT);
 870             }
 871             else  // we throw away response and go to idle mode
 872             {
 873                 yaz_log(YLOG_DEBUG, "Ignoring result of expired operation");
 874                 cl->state = Client_Idle;
 875             }
 876         }
 877         /* if len==1 we do nothing but wait for more input */
 878     }
 879
 880     if (cl->state == Client_Connected) {
 881         send_init(i);
 882     }
 883
 884     if (cl->state == Client_Idle)
 885     {
 886         if (cl->requestid != se->requestid && *se->query) {
 887             send_search(i);
 888         }
 889         else if (cl->hits > 0 && cl->records < global_parameters.toget &&
 890             cl->records < cl->hits) {
 891             send_present(i);
 892         }
 893     }
 894 }
 895
 896 // Disassociate connection from client
 897 static void connection_release(struct connection *co)
 898 {
 899     struct client *cl = co->client;
 900
 901     yaz_log(YLOG_DEBUG, "Connection release %s", co->host->hostport);
 902     if (!cl)
 903         return;
 904     cl->connection = 0;
 905     co->client = 0;
 906 }
 907
 908 // Close connection and recycle structure
 909 static void connection_destroy(struct connection *co)
 910 {
 911     struct host *h = co->host;
 912     cs_close(co->link);
 913     iochan_destroy(co->iochan);
 914
 915     yaz_log(YLOG_DEBUG, "Connection destroy %s", co->host->hostport);
 916     if (h->connections == co)
 917         h->connections = co->next;
 918     else
 919     {
 920         struct connection *pco;
 921         for (pco = h->connections; pco && pco->next != co; pco = pco->next)
 922             ;
 923         if (pco)
 924             pco->next = co->next;
 925         else
 926             abort();
 927     }
 928     if (co->client)
 929     {
 930         if (co->client->state != Client_Idle)
 931             co->client->state = Client_Disconnected;
 932         co->client->connection = 0;
 933     }
 934     co->next = connection_freelist;
 935     connection_freelist = co;
 936 }
 937
 938 // Creates a new connection for client, associated with the host of
 939 // client's database
 940 static struct connection *connection_create(struct client *cl)
 941 {
 942     struct connection *new;
 943     COMSTACK link;
 944     int res;
 945     void *addr;
 946
 947     yaz_log(YLOG_DEBUG, "Connection create %s", cl->database->url);
 948     if (!(link = cs_create(tcpip_type, 0, PROTO_Z3950)))
 949     {
 950         yaz_log(YLOG_FATAL|YLOG_ERRNO, "Failed to create comstack");
 951         exit(1);
 952     }
 953
 954     if (!(addr = cs_straddr(link, cl->database->host->ipport)))
 955     {
 956         yaz_log(YLOG_WARN|YLOG_ERRNO, "Lookup of IP address %s failed?",
 957             cl->database->host->ipport);
 958         return 0;
 959     }
 960
 961     res = cs_connect(link, addr);
 962     if (res < 0)
 963     {
 964         yaz_log(YLOG_WARN|YLOG_ERRNO, "cs_connect %s", cl->database->url);
 965         return 0;
 966     }
 967
 968     if ((new = connection_freelist))
 969         connection_freelist = new->next;
 970     else
 971     {
 972         new = xmalloc(sizeof (struct connection));
 973         new->ibuf = 0;
 974         new->ibufsize = 0;
 975     }
 976     new->state = Conn_Connecting;
 977     new->host = cl->database->host;
 978     new->next = new->host->connections;
 979     new->host->connections = new;
 980     new->client = cl;
 981     cl->connection = new;
 982     new->link = link;
 983
 984     new->iochan = iochan_create(cs_fileno(link), handler, 0);
 985     iochan_setdata(new->iochan, new);
 986     new->iochan->next = channel_list;
 987     channel_list = new->iochan;
 988     return new;
 989 }
 990
 991 // Close connection and set state to error
 992 static void client_fatal(struct client *cl)
 993 {
 994     yaz_log(YLOG_WARN, "Fatal error from %s", cl->database->url);
 995     connection_destroy(cl->connection);
 996     cl->state = Client_Error;
 997 }
 998
 999 // Ensure that client has a connection associated
1000 static int client_prep_connection(struct client *cl)
1001 {
1002     struct connection *co;
1003     struct session *se = cl->session;
1004     struct host *host = cl->database->host;
1005
1006     co = cl->connection;
1007
1008     yaz_log(YLOG_DEBUG, "Client prep %s", cl->database->url);
1009
1010     if (!co)
1011     {
1012         // See if someone else has an idle connection
1013         // We should look at timestamps here to select the longest-idle connection
1014         for (co = host->connections; co; co = co->next)
1015             if (co->state == Conn_Open && (!co->client || co->client->session != se))
1016                 break;
1017         if (co)
1018         {
1019             connection_release(co);
1020             cl->connection = co;
1021             co->client = cl;
1022         }
1023         else
1024             co = connection_create(cl);
1025     }
1026     if (co)
1027     {
1028         if (co->state == Conn_Connecting)
1029         {
1030             cl->state = Client_Connecting;
1031             iochan_setflag(co->iochan, EVENT_OUTPUT);
1032         }
1033         else if (co->state == Conn_Open)
1034         {
1035             if (cl->state == Client_Error || cl->state == Client_Disconnected)
1036                 cl->state = Client_Idle;
1037             iochan_setflag(co->iochan, EVENT_OUTPUT);
1038         }
1039         return 1;
1040     }
1041     else
1042         return 0;
1043 }
1044
1045 // This function will most likely vanish when a proper target profile mechanism is
1046 // introduced.
1047 void load_simpletargets(const char *fn)
1048 {
1049     FILE *f = fopen(fn, "r");
1050     char line[256];
1051
1052     if (!f)
1053     {
1054         yaz_log(YLOG_WARN|YLOG_ERRNO, "open %s", fn);
1055         exit(1);
1056     }
1057
1058     while (fgets(line, 255, f))
1059     {
1060         char *url, *db;
1061         char *name;
1062         struct host *host;
1063         struct database *database;
1064
1065         if (strncmp(line, "target ", 7))
1066             continue;
1067         line[strlen(line) - 1] = '\0';
1068
1069         if ((name = strchr(line, ';')))
1070             *(name++) = '\0';
1071
1072         url = line + 7;
1073         if ((db = strchr(url, '/')))
1074             *(db++) = '\0';
1075         else
1076             db = "Default";
1077
1078         yaz_log(YLOG_LOG, "Target: %s, '%s'", url, db);
1079         for (host = hosts; host; host = host->next)
1080             if (!strcmp(url, host->hostport))
1081                 break;
1082         if (!host)
1083         {
1084             struct addrinfo *addrinfo, hints;
1085             char *port;
1086             char ipport[128];
1087             unsigned char addrbuf[4];
1088             int res;
1089
1090             host = xmalloc(sizeof(struct host));
1091             host->hostport = xstrdup(url);
1092             host->connections = 0;
1093
1094             if ((port = strchr(url, ':')))
1095                 *(port++) = '\0';
1096             else
1097                 port = "210";
1098
1099             hints.ai_flags = 0;
1100             hints.ai_family = PF_INET;
1101             hints.ai_socktype = SOCK_STREAM;
1102             hints.ai_protocol = IPPROTO_TCP;
1103             hints.ai_addrlen = 0;
1104             hints.ai_addr = 0;
1105             hints.ai_canonname = 0;
1106             hints.ai_next = 0;
1107             // This is not robust code. It assumes that getaddrinfo returns AF_INET
1108             // address.
1109             if ((res = getaddrinfo(url, port, &hints, &addrinfo)))
1110             {
1111                 yaz_log(YLOG_WARN, "Failed to resolve %s: %s", url, gai_strerror(res));
1112                 xfree(host->hostport);
1113                 xfree(host);
1114                 continue;
1115             }
1116             assert(addrinfo->ai_family == PF_INET);
1117             memcpy(addrbuf, &((struct sockaddr_in*)addrinfo->ai_addr)->sin_addr.s_addr, 4);
1118             sprintf(ipport, "%u.%u.%u.%u:%s",
1119                     addrbuf[0], addrbuf[1], addrbuf[2], addrbuf[3], port);
1120             host->ipport = xstrdup(ipport);
1121             freeaddrinfo(addrinfo);
1122             host->next = hosts;
1123             hosts = host;
1124         }
1125         database = xmalloc(sizeof(struct database));
1126         database->host = host;
1127         database->url = xmalloc(strlen(url) + strlen(db) + 2);
1128         strcpy(database->url, url);
1129         strcat(database->url, "/");
1130         strcat(database->url, db);
1131         if (name)
1132             database->name = xstrdup(name);
1133         else
1134             database->name = 0;
1135
1136         database->databases = xmalloc(2 * sizeof(char *));
1137         database->databases[0] = xstrdup(db);
1138         database->databases[1] = 0;
1139         database->errors = 0;
1140         database->qprofile = 0;
1141         database->rprofile = database_retrieval_profile(database);
1142         database->next = databases;
1143         databases = database;
1144
1145     }
1146     fclose(f);
1147 }
1148
1149 static void pull_terms(NMEM nmem, struct ccl_rpn_node *n, char **termlist, int *num)
1150 {
1151     switch (n->kind)
1152     {
1153         case CCL_RPN_AND:
1154         case CCL_RPN_OR:
1155         case CCL_RPN_NOT:
1156         case CCL_RPN_PROX:
1157             pull_terms(nmem, n->u.p[0], termlist, num);
1158             pull_terms(nmem, n->u.p[1], termlist, num);
1159             break;
1160         case CCL_RPN_TERM:
1161             termlist[(*num)++] = nmem_strdup(nmem, n->u.t.term);
1162             break;
1163         default: // NOOP
1164             break;
1165     }
1166 }
1167
1168 // Extract terms from query into null-terminated termlist
1169 static int extract_terms(NMEM nmem, char *query, char **termlist)
1170 {
1171     int error, pos;
1172     struct ccl_rpn_node *n;
1173     int num = 0;
1174
1175     n = ccl_find_str(global_parameters.ccl_filter, query, &error, &pos);
1176     if (!n)
1177         return -1;
1178     pull_terms(nmem, n, termlist, &num);
1179     termlist[num] = 0;
1180     ccl_rpn_delete(n);
1181     return 0;
1182 }
1183
1184 static struct client *client_create(void)
1185 {
1186     struct client *r;
1187     if (client_freelist)
1188     {
1189         r = client_freelist;
1190         client_freelist = client_freelist->next;
1191     }
1192     else
1193         r = xmalloc(sizeof(struct client));
1194     r->database = 0;
1195     r->connection = 0;
1196     r->session = 0;
1197     r->hits = 0;
1198     r->records = 0;
1199     r->setno = 0;
1200     r->requestid = -1;
1201     r->diagnostic = 0;
1202     r->state = Client_Disconnected;
1203     r->next = 0;
1204     return r;
1205 }
1206
1207 void client_destroy(struct client *c)
1208 {
1209     struct session *se = c->session;
1210     if (c == se->clients)
1211         se->clients = c->next;
1212     else
1213     {
1214         struct client *cc;
1215         for (cc = se->clients; cc && cc->next != c; cc = cc->next)
1216             ;
1217         if (cc)
1218             cc->next = c->next;
1219     }
1220     if (c->connection)
1221         connection_release(c->connection);
1222     c->next = client_freelist;
1223     client_freelist = c;
1224 }
1225
1226 void session_set_watch(struct session *s, int what, session_watchfun fun, void *data)
1227 {
1228     s->watchlist[what].fun = fun;
1229     s->watchlist[what].data = data;
1230 }
1231
1232 void session_alert_watch(struct session *s, int what)
1233 {
1234     if (!s->watchlist[what].fun)
1235         return;
1236     (*s->watchlist[what].fun)(s->watchlist[what].data);
1237     s->watchlist[what].fun = 0;
1238     s->watchlist[what].data = 0;
1239 }
1240
1241 // This needs to be extended with selection criteria
1242 static struct conf_retrievalprofile *database_retrieval_profile(struct database *db)
1243 {
1244     if (!config)
1245     {
1246         yaz_log(YLOG_FATAL, "Must load configuration (-f)");
1247         exit(1);
1248     }
1249     if (!config->retrievalprofiles)
1250     {
1251         yaz_log(YLOG_FATAL, "No retrieval profiles defined");
1252     }
1253     return config->retrievalprofiles;
1254 }
1255
1256 // This should be extended with parameters to control selection criteria
1257 // Associates a set of clients with a session;
1258 int select_targets(struct session *se)
1259 {
1260     struct database *db;
1261     int c = 0;
1262
1263     while (se->clients)
1264         client_destroy(se->clients);
1265     for (db = databases; db; db = db->next)
1266     {
1267         struct client *cl = client_create();
1268         cl->database = db;
1269         cl->session = se;
1270         cl->next = se->clients;
1271         se->clients = cl;
1272         c++;
1273     }
1274     return c;
1275 }
1276
1277 int session_active_clients(struct session *s)
1278 {
1279     struct client *c;
1280     int res = 0;
1281
1282     for (c = s->clients; c; c = c->next)
1283         if (c->connection && (c->state == Client_Connecting ||
1284                     c->state == Client_Initializing ||
1285                     c->state == Client_Searching ||
1286                     c->state == Client_Presenting))
1287             res++;
1288
1289     return res;
1290 }
1291
1292 char *search(struct session *se, char *query)
1293 {
1294     int live_channels = 0;
1295     struct client *cl;
1296
1297     yaz_log(YLOG_DEBUG, "Search");
1298
1299     strcpy(se->query, query);
1300     se->requestid++;
1301     nmem_reset(se->nmem);
1302     for (cl = se->clients; cl; cl = cl->next)
1303     {
1304         cl->hits = -1;
1305         cl->records = 0;
1306         cl->diagnostic = 0;
1307
1308         if (client_prep_connection(cl))
1309             live_channels++;
1310     }
1311     if (live_channels)
1312     {
1313         char *p[512];
1314         int maxrecs = live_channels * global_parameters.toget;
1315         se->num_termlists = 0;
1316         se->reclist = reclist_create(se->nmem, maxrecs);
1317         extract_terms(se->nmem, query, p);
1318         se->relevance = relevance_create(se->nmem, (const char **) p, maxrecs);
1319         se->total_records = se->total_hits = se->total_merged = 0;
1320         se->expected_maxrecs = maxrecs;
1321     }
1322     else
1323         return "NOTARGETS";
1324
1325     return 0;
1326 }
1327
1328 void destroy_session(struct session *s)
1329 {
1330     yaz_log(YLOG_LOG, "Destroying session");
1331     while (s->clients)
1332         client_destroy(s->clients);
1333     nmem_destroy(s->nmem);
1334     wrbuf_free(s->wrbuf, 1);
1335 }
1336
1337 struct session *new_session()
1338 {
1339     int i;
1340     struct session *session = xmalloc(sizeof(*session));
1341
1342     yaz_log(YLOG_DEBUG, "New pazpar2 session");
1343
1344     session->total_hits = 0;
1345     session->total_records = 0;
1346     session->num_termlists = 0;
1347     session->reclist = 0;
1348     session->requestid = -1;
1349     session->clients = 0;
1350     session->expected_maxrecs = 0;
1351     session->query[0] = '\0';
1352     session->nmem = nmem_create();
1353     session->wrbuf = wrbuf_alloc();
1354     for (i = 0; i <= SESSION_WATCH_MAX; i++)
1355     {
1356         session->watchlist[i].data = 0;
1357         session->watchlist[i].fun = 0;
1358     }
1359
1360     select_targets(session);
1361
1362     return session;
1363 }
1364
1365 struct hitsbytarget *hitsbytarget(struct session *se, int *count)
1366 {
1367     static struct hitsbytarget res[1000]; // FIXME MM
1368     struct client *cl;
1369
1370     *count = 0;
1371     for (cl = se->clients; cl; cl = cl->next)
1372     {
1373         res[*count].id = cl->database->url;
1374         res[*count].name = cl->database->name;
1375         res[*count].hits = cl->hits;
1376         res[*count].records = cl->records;
1377         res[*count].diagnostic = cl->diagnostic;
1378         res[*count].state = client_states[cl->state];
1379         res[*count].connected  = cl->connection ? 1 : 0;
1380         (*count)++;
1381     }
1382
1383     return res;
1384 }
1385
1386 struct termlist_score **termlist(struct session *s, const char *name, int *num)
1387 {
1388     int i;
1389
1390     for (i = 0; i < s->num_termlists; i++)
1391         if (!strcmp(s->termlists[i].name, name))
1392             return termlist_highscore(s->termlists[i].termlist, num);
1393     return 0;
1394 }
1395
1396 #ifdef MISSING_HEADERS
1397 void report_nmem_stats(void)
1398 {
1399     size_t in_use, is_free;
1400
1401     nmem_get_memory_in_use(&in_use);
1402     nmem_get_memory_free(&is_free);
1403
1404     yaz_log(YLOG_LOG, "nmem stat: use=%ld free=%ld",
1405             (long) in_use, (long) is_free);
1406 }
1407 #endif
1408
1409 struct record_cluster *show_single(struct session *s, int id)
1410 {
1411     struct record_cluster *r;
1412
1413     reclist_rewind(s->reclist);
1414     while ((r = reclist_read_record(s->reclist)))
1415         if (r->recid == id)
1416             return r;
1417     return 0;
1418 }
1419
1420 struct record_cluster **show(struct session *s, struct reclist_sortparms *sp, int start,
1421         int *num, int *total, int *sumhits, NMEM nmem_show)
1422 {
1423     struct record_cluster **recs = nmem_malloc(nmem_show, *num
1424                                        * sizeof(struct record_cluster *));
1425     struct reclist_sortparms *spp;
1426     int i;
1427 #if USE_TIMING
1428     yaz_timing_t t = yaz_timing_create();
1429 #endif
1430
1431     for (spp = sp; spp; spp = spp->next)
1432         if (spp->type == Metadata_sortkey_relevance)
1433         {
1434             relevance_prepare_read(s->relevance, s->reclist);
1435             break;
1436         }
1437     reclist_sort(s->reclist, sp);
1438
1439     *total = s->reclist->num_records;
1440     *sumhits = s->total_hits;
1441
1442     for (i = 0; i < start; i++)
1443         if (!reclist_read_record(s->reclist))
1444         {
1445             *num = 0;
1446             recs = 0;
1447             break;
1448         }
1449
1450     for (i = 0; i < *num; i++)
1451     {
1452         struct record_cluster *r = reclist_read_record(s->reclist);
1453         if (!r)
1454         {
1455             *num = i;
1456             break;
1457         }
1458         recs[i] = r;
1459     }
1460 #if USE_TIMING
1461     yaz_timing_stop(t);
1462     yaz_log(YLOG_LOG, "show %6.5f %3.2f %3.2f",
1463             yaz_timing_get_real(t), yaz_timing_get_user(t),
1464             yaz_timing_get_sys(t));
1465     yaz_timing_destroy(&t);
1466 #endif
1467     return recs;
1468 }
1469
1470 void statistics(struct session *se, struct statistics *stat)
1471 {
1472     struct client *cl;
1473     int count = 0;
1474
1475     memset(stat, 0, sizeof(*stat));
1476     for (cl = se->clients; cl; cl = cl->next)
1477     {
1478         if (!cl->connection)
1479             stat->num_no_connection++;
1480         switch (cl->state)
1481         {
1482             case Client_Connecting: stat->num_connecting++; break;
1483             case Client_Initializing: stat->num_initializing++; break;
1484             case Client_Searching: stat->num_searching++; break;
1485             case Client_Presenting: stat->num_presenting++; break;
1486             case Client_Idle: stat->num_idle++; break;
1487             case Client_Failed: stat->num_failed++; break;
1488             case Client_Error: stat->num_error++; break;
1489             default: break;
1490         }
1491         count++;
1492     }
1493     stat->num_hits = se->total_hits;
1494     stat->num_records = se->total_records;
1495
1496     stat->num_clients = count;
1497 }
1498
1499 static CCL_bibset load_cclfile(const char *fn)
1500 {
1501     CCL_bibset res = ccl_qual_mk();
1502     if (ccl_qual_fname(res, fn) < 0)
1503     {
1504         yaz_log(YLOG_FATAL|YLOG_ERRNO, "%s", fn);
1505         exit(1);
1506     }
1507     return res;
1508 }
1509
1510 static void start_http_listener(void)
1511 {
1512     char hp[128] = "";
1513     struct conf_server *ser = global_parameters.server;
1514
1515     if (*global_parameters.listener_override)
1516         strcpy(hp, global_parameters.listener_override);
1517     else
1518     {
1519         strcpy(hp, ser->host ? ser->host : "");
1520         if (ser->port)
1521         {
1522             if (*hp)
1523                 strcat(hp, ":");
1524             sprintf(hp + strlen(hp), "%d", ser->port);
1525         }
1526     }
1527     http_init(hp);
1528 }
1529
1530 static void start_proxy(void)
1531 {
1532     char hp[128] = "";
1533     struct conf_server *ser = global_parameters.server;
1534
1535     if (*global_parameters.proxy_override)
1536         strcpy(hp, global_parameters.proxy_override);
1537     else if (ser->proxy_host || ser->proxy_port)
1538     {
1539         strcpy(hp, ser->proxy_host ? ser->proxy_host : "");
1540         if (ser->proxy_port)
1541         {
1542             if (*hp)
1543                 strcat(hp, ":");
1544             sprintf(hp + strlen(hp), "%d", ser->proxy_port);
1545         }
1546     }
1547     else
1548         return;
1549
1550     http_set_proxyaddr(hp);
1551 }
1552
1553 int main(int argc, char **argv)
1554 {
1555     int ret;
1556     char *arg;
1557
1558     if (signal(SIGPIPE, SIG_IGN) == SIG_ERR)
1559         yaz_log(YLOG_WARN|YLOG_ERRNO, "signal");
1560
1561     yaz_log_init(YLOG_DEFAULT_LEVEL, "pazpar2", 0);
1562
1563     while ((ret = options("f:x:h:p:C:s:d", argv, argc, &arg)) != -2)
1564     {
1565         switch (ret) {
1566             case 'f':
1567                 if (!read_config(arg))
1568                     exit(1);
1569                 break;
1570             case 'h':
1571                 strcpy(global_parameters.listener_override, arg);
1572                 break;
1573             case 'C':
1574                 global_parameters.ccl_filter = load_cclfile(arg);
1575                 break;
1576             case 'p':
1577                 strcpy(global_parameters.proxy_override, arg);
1578                 break;
1579             case 's':
1580                 load_simpletargets(arg);
1581                 break;
1582             case 'd':
1583                 global_parameters.dump_records = 1;
1584                 break;
1585             default:
1586                 fprintf(stderr, "Usage: pazpar2\n"
1587                         "    -f configfile\n"
1588                         "    -h [host:]port          (REST protocol listener)\n"
1589                         "    -C cclconfig\n"
1590                         "    -s simpletargetfile\n"
1591                         "    -p hostname[:portno]    (HTTP proxy)\n"
1592                         "    -d                      (show internal records)\n");
1593                 exit(1);
1594         }
1595     }
1596
1597     if (!config)
1598     {
1599         yaz_log(YLOG_FATAL, "Load config with -f");
1600         exit(1);
1601     }
1602     global_parameters.server = config->servers;
1603
1604     start_http_listener();
1605     start_proxy();
1606     global_parameters.ccl_filter = load_cclfile("../etc/default.bib");
1607     global_parameters.yaz_marc = yaz_marc_create();
1608     yaz_marc_subfield_str(global_parameters.yaz_marc, "\t");
1609     global_parameters.odr_in = odr_createmem(ODR_DECODE);
1610     global_parameters.odr_out = odr_createmem(ODR_ENCODE);
1611
1612     event_loop(&channel_list);
1613
1614     return 0;
1615 }
1616
1617 /*
1618  * Local variables:
1619  * c-basic-offset: 4
1620  * indent-tabs-mode: nil
1621  * End:
1622  * vim: shiftwidth=4 tabstop=8 expandtab
1623  */