src/pazpar2.c

   1 /* $Id: pazpar2.c,v 1.65 2007-04-08 21:51:58 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/otherinfo.h>
  21 #include <yaz/yaz-util.h>
  22 #include <yaz/nmem.h>
  23
  24 #if HAVE_CONFIG_H
  25 #include "cconfig.h"
  26 #endif
  27
  28 #define USE_TIMING 0
  29 #if USE_TIMING
  30 #include <yaz/timing.h>
  31 #endif
  32
  33 #include <netinet/in.h>
  34
  35 #include "pazpar2.h"
  36 #include "eventl.h"
  37 #include "http.h"
  38 #include "termlists.h"
  39 #include "reclists.h"
  40 #include "relevance.h"
  41 #include "config.h"
  42 #include "database.h"
  43 #include "settings.h"
  44
  45 #define MAX_CHUNK 15
  46
  47 static void client_fatal(struct client *cl);
  48 static void connection_destroy(struct connection *co);
  49 static int client_prep_connection(struct client *cl);
  50 static void ingest_records(struct client *cl, Z_Records *r);
  51 void session_alert_watch(struct session *s, int what);
  52 char *session_setting_oneval(struct session *s, struct database *db, int offset);
  53
  54 IOCHAN channel_list = 0;  // Master list of connections we're handling events to
  55
  56 static struct connection *connection_freelist = 0;
  57 static struct client *client_freelist = 0;
  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     "",
  78     "",
  79     0,
  80     0,
  81     30,
  82     "81",
  83     "Index Data PazPar2 (MasterKey)",
  84     VERSION,
  85     600, // 10 minutes
  86     60,
  87     100,
  88     MAX_CHUNK,
  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 // Set authentication token in init if one is set for the client
 122 // TODO: Extend this to handle other schemes than open (should be simple)
 123 static void init_authentication(struct client *cl, Z_InitRequest *req)
 124 {
 125     struct database *db = cl->database;
 126     struct session *se = cl->session;
 127     char *auth = session_setting_oneval(se, db, PZ_AUTHENTICATION);
 128
 129     if (auth)
 130     {
 131         Z_IdAuthentication *idAuth = odr_malloc(global_parameters.odr_out,
 132                 sizeof(*idAuth));
 133         idAuth->which = Z_IdAuthentication_open;
 134         idAuth->u.open = auth;
 135         req->idAuthentication = idAuth;
 136     }
 137 }
 138
 139 static void send_init(IOCHAN i)
 140 {
 141
 142     struct connection *co = iochan_getdata(i);
 143     struct client *cl = co->client;
 144     Z_APDU *a = zget_APDU(global_parameters.odr_out, Z_APDU_initRequest);
 145
 146     a->u.initRequest->implementationId = global_parameters.implementationId;
 147     a->u.initRequest->implementationName = global_parameters.implementationName;
 148     a->u.initRequest->implementationVersion =
 149         global_parameters.implementationVersion;
 150     ODR_MASK_SET(a->u.initRequest->options, Z_Options_search);
 151     ODR_MASK_SET(a->u.initRequest->options, Z_Options_present);
 152     ODR_MASK_SET(a->u.initRequest->options, Z_Options_namedResultSets);
 153
 154     ODR_MASK_SET(a->u.initRequest->protocolVersion, Z_ProtocolVersion_1);
 155     ODR_MASK_SET(a->u.initRequest->protocolVersion, Z_ProtocolVersion_2);
 156     ODR_MASK_SET(a->u.initRequest->protocolVersion, Z_ProtocolVersion_3);
 157
 158     init_authentication(cl, a->u.initRequest);
 159
 160     /* add virtual host if tunneling through Z39.50 proxy */
 161
 162     if (0 < strlen(global_parameters.zproxy_override)
 163         && 0 < strlen(cl->database->url))
 164         yaz_oi_set_string_oidval(&a->u.initRequest->otherInfo,
 165                                  global_parameters.odr_out, VAL_PROXY,
 166                                  1, cl->database->url);
 167
 168     if (send_apdu(cl, a) >= 0)
 169     {
 170         iochan_setflags(i, EVENT_INPUT);
 171         cl->state = Client_Initializing;
 172     }
 173     else
 174         cl->state = Client_Error;
 175     odr_reset(global_parameters.odr_out);
 176 }
 177
 178 static void pull_terms(NMEM nmem, struct ccl_rpn_node *n, char **termlist, int *num)
 179 {
 180     switch (n->kind)
 181     {
 182         case CCL_RPN_AND:
 183         case CCL_RPN_OR:
 184         case CCL_RPN_NOT:
 185         case CCL_RPN_PROX:
 186             pull_terms(nmem, n->u.p[0], termlist, num);
 187             pull_terms(nmem, n->u.p[1], termlist, num);
 188             break;
 189         case CCL_RPN_TERM:
 190             termlist[(*num)++] = nmem_strdup(nmem, n->u.t.term);
 191             break;
 192         default: // NOOP
 193             break;
 194     }
 195 }
 196
 197 // Extract terms from query into null-terminated termlist
 198 static void extract_terms(NMEM nmem, struct ccl_rpn_node *query, char **termlist)
 199 {
 200     int num = 0;
 201
 202     pull_terms(nmem, query, termlist, &num);
 203     termlist[num] = 0;
 204 }
 205
 206 static void send_search(IOCHAN i)
 207 {
 208     struct connection *co = iochan_getdata(i);
 209     struct client *cl = co->client;
 210     struct session *se = cl->session;
 211     struct database *db = cl->database;
 212     Z_APDU *a = zget_APDU(global_parameters.odr_out, Z_APDU_searchRequest);
 213     int ndb, cerror, cpos;
 214     char **databaselist;
 215     Z_Query *zquery;
 216     struct ccl_rpn_node *cn;
 217     int ssub = 0, lslb = 100000, mspn = 10;
 218     char *recsyn;
 219     char *piggyback;
 220
 221     yaz_log(YLOG_DEBUG, "Sending search");
 222
 223     cn = ccl_find_str(db->ccl_map, se->query, &cerror, &cpos);
 224     if (!cn)
 225         return;
 226
 227     if (!se->relevance)
 228     {
 229         // Initialize relevance structure with query terms
 230         char *p[512];
 231         extract_terms(se->nmem, cn, p);
 232         se->relevance = relevance_create(se->nmem, (const char **) p,
 233                 se->expected_maxrecs);
 234     }
 235
 236     a->u.searchRequest->query = zquery = odr_malloc(global_parameters.odr_out,
 237             sizeof(Z_Query));
 238     zquery->which = Z_Query_type_1;
 239     zquery->u.type_1 = ccl_rpn_query(global_parameters.odr_out, cn);
 240     ccl_rpn_delete(cn);
 241
 242     for (ndb = 0; db->databases[ndb]; ndb++)
 243         ;
 244     databaselist = odr_malloc(global_parameters.odr_out, sizeof(char*) * ndb);
 245     for (ndb = 0; db->databases[ndb]; ndb++)
 246         databaselist[ndb] = db->databases[ndb];
 247
 248     if (!(piggyback = session_setting_oneval(se, db, PZ_PIGGYBACK)) || *piggyback == '1')
 249     {
 250         if ((recsyn = session_setting_oneval(se, db, PZ_NATIVESYNTAX)))
 251             a->u.searchRequest->preferredRecordSyntax =
 252                     yaz_str_to_z3950oid(global_parameters.odr_out,
 253                     CLASS_RECSYN, recsyn);
 254         a->u.searchRequest->smallSetUpperBound = &ssub;
 255         a->u.searchRequest->largeSetLowerBound = &lslb;
 256         a->u.searchRequest->mediumSetPresentNumber = &mspn;
 257     }
 258     a->u.searchRequest->resultSetName = "Default";
 259     a->u.searchRequest->databaseNames = databaselist;
 260     a->u.searchRequest->num_databaseNames = ndb;
 261
 262     if (send_apdu(cl, a) >= 0)
 263     {
 264         iochan_setflags(i, EVENT_INPUT);
 265         cl->state = Client_Searching;
 266         cl->requestid = se->requestid;
 267     }
 268     else
 269         cl->state = Client_Error;
 270
 271     odr_reset(global_parameters.odr_out);
 272 }
 273
 274 static void send_present(IOCHAN i)
 275 {
 276     struct connection *co = iochan_getdata(i);
 277     struct client *cl = co->client;
 278     struct session *se = cl->session;
 279     struct database *db = cl->database;
 280     Z_APDU *a = zget_APDU(global_parameters.odr_out, Z_APDU_presentRequest);
 281     int toget;
 282     int start = cl->records + 1;
 283     char *recsyn;
 284
 285     toget = global_parameters.chunk;
 286     if (toget > global_parameters.toget - cl->records)
 287         toget = global_parameters.toget - cl->records;
 288     if (toget > cl->hits - cl->records)
 289         toget = cl->hits - cl->records;
 290
 291     yaz_log(YLOG_DEBUG, "Trying to present %d records\n", toget);
 292
 293     a->u.presentRequest->resultSetStartPoint = &start;
 294     a->u.presentRequest->numberOfRecordsRequested = &toget;
 295
 296     a->u.presentRequest->resultSetId = "Default";
 297
 298     if ((recsyn = session_setting_oneval(se, db, PZ_NATIVESYNTAX)))
 299         a->u.presentRequest->preferredRecordSyntax =
 300                 yaz_str_to_z3950oid(global_parameters.odr_out,
 301                 CLASS_RECSYN, recsyn);
 302
 303     if (send_apdu(cl, a) >= 0)
 304     {
 305         iochan_setflags(i, EVENT_INPUT);
 306         cl->state = Client_Presenting;
 307     }
 308     else
 309         cl->state = Client_Error;
 310     odr_reset(global_parameters.odr_out);
 311 }
 312
 313 static void do_initResponse(IOCHAN i, Z_APDU *a)
 314 {
 315     struct connection *co = iochan_getdata(i);
 316     struct client *cl = co->client;
 317     Z_InitResponse *r = a->u.initResponse;
 318
 319     yaz_log(YLOG_DEBUG, "Init response %s", cl->database->url);
 320
 321     if (*r->result)
 322     {
 323         cl->state = Client_Idle;
 324     }
 325     else
 326         cl->state = Client_Failed; // FIXME need to do something to the connection
 327 }
 328
 329 static void do_searchResponse(IOCHAN i, Z_APDU *a)
 330 {
 331     struct connection *co = iochan_getdata(i);
 332     struct client *cl = co->client;
 333     struct session *se = cl->session;
 334     Z_SearchResponse *r = a->u.searchResponse;
 335
 336     yaz_log(YLOG_DEBUG, "Search response %s (status=%d)",
 337             cl->database->url, *r->searchStatus);
 338
 339     if (*r->searchStatus)
 340     {
 341         cl->hits = *r->resultCount;
 342         se->total_hits += cl->hits;
 343         if (r->presentStatus && !*r->presentStatus && r->records)
 344         {
 345             yaz_log(YLOG_DEBUG, "Records in search response %s",
 346                     cl->database->url);
 347             ingest_records(cl, r->records);
 348         }
 349         cl->state = Client_Idle;
 350     }
 351     else
 352     {          /*"FAILED"*/
 353         cl->hits = 0;
 354         cl->state = Client_Error;
 355         if (r->records) {
 356             Z_Records *recs = r->records;
 357             if (recs->which == Z_Records_NSD)
 358             {
 359                 yaz_log(YLOG_WARN,
 360                         "Search response: Non-surrogate diagnostic %s",
 361                         cl->database->url);
 362                 cl->diagnostic = *recs->u.nonSurrogateDiagnostic->condition;
 363                 cl->state = Client_Error;
 364             }
 365         }
 366     }
 367 }
 368
 369 static void do_closeResponse(IOCHAN i, Z_APDU *a)
 370 {
 371     struct connection *co = iochan_getdata(i);
 372     struct client *cl = co->client;
 373     /* Z_Close *r = a->u.close; */
 374
 375     yaz_log(YLOG_WARN, "Close response %s", cl->database->url);
 376
 377     cl->state = Client_Failed;
 378     connection_destroy(co);
 379 }
 380
 381
 382 char *normalize_mergekey(char *buf, int skiparticle)
 383 {
 384     char *p = buf, *pout = buf;
 385
 386     if (skiparticle)
 387     {
 388         char firstword[64];
 389         char articles[] = "the den der die des an a "; // must end in space
 390
 391         while (*p && !isalnum(*p))
 392             p++;
 393         pout = firstword;
 394         while (*p && *p != ' ' && pout - firstword < 62)
 395             *(pout++) = tolower(*(p++));
 396         *(pout++) = ' ';
 397         *(pout++) = '\0';
 398         if (!strstr(articles, firstword))
 399             p = buf;
 400         pout = buf;
 401     }
 402
 403     while (*p)
 404     {
 405         while (*p && !isalnum(*p))
 406             p++;
 407         while (isalnum(*p))
 408             *(pout++) = tolower(*(p++));
 409         if (*p)
 410             *(pout++) = ' ';
 411         while (*p && !isalnum(*p))
 412             p++;
 413     }
 414     if (buf != pout)
 415         do {
 416             *(pout--) = '\0';
 417         }
 418         while (pout > buf && *pout == ' ');
 419
 420     return buf;
 421 }
 422
 423 static void add_facet(struct session *s, const char *type, const char *value)
 424 {
 425     int i;
 426
 427     if (!*value)
 428         return;
 429     for (i = 0; i < s->num_termlists; i++)
 430         if (!strcmp(s->termlists[i].name, type))
 431             break;
 432     if (i == s->num_termlists)
 433     {
 434         if (i == SESSION_MAX_TERMLISTS)
 435         {
 436             yaz_log(YLOG_FATAL, "Too many termlists");
 437             exit(1);
 438         }
 439         s->termlists[i].name = nmem_strdup(s->nmem, type);
 440         s->termlists[i].termlist = termlist_create(s->nmem, s->expected_maxrecs, 15);
 441         s->num_termlists = i + 1;
 442     }
 443     termlist_insert(s->termlists[i].termlist, value);
 444 }
 445
 446 static xmlDoc *normalize_record(struct client *cl, Z_External *rec)
 447 {
 448     struct database_retrievalmap *m;
 449     struct database *db = cl->database;
 450     xmlNode *res;
 451     xmlDoc *rdoc;
 452
 453     // First normalize to XML
 454     if (db->yaz_marc)
 455     {
 456         char *buf;
 457         int len;
 458         if (rec->which != Z_External_octet)
 459         {
 460             yaz_log(YLOG_WARN, "Unexpected external branch, probably BER %s",
 461                     cl->database->url);
 462             return 0;
 463         }
 464         buf = (char*) rec->u.octet_aligned->buf;
 465         len = rec->u.octet_aligned->len;
 466         if (yaz_marc_read_iso2709(db->yaz_marc, buf, len) < 0)
 467         {
 468             yaz_log(YLOG_WARN, "Failed to decode MARC %s",
 469                     cl->database->url);
 470             return 0;
 471         }
 472         if (yaz_marc_write_xml(db->yaz_marc, &res,
 473                     "http://www.loc.gov/MARC21/slim", 0, 0) < 0)
 474         {
 475             yaz_log(YLOG_WARN, "Failed to encode as XML %s",
 476                     cl->database->url);
 477             return 0;
 478         }
 479         rdoc = xmlNewDoc((xmlChar *) "1.0");
 480         xmlDocSetRootElement(rdoc, res);
 481     }
 482     else
 483     {
 484         yaz_log(YLOG_FATAL, "Unknown native_syntax in normalize_record");
 485         exit(1);
 486     }
 487
 488     if (global_parameters.dump_records)
 489     {
 490         fprintf(stderr, "Input Record (normalized):\n----------------\n");
 491 #if LIBXML_VERSION >= 20600
 492         xmlDocFormatDump(stderr, rdoc, 1);
 493 #else
 494         xmlDocDump(stderr, rdoc);
 495 #endif
 496     }
 497
 498     for (m = db->map; m; m = m->next)
 499     {
 500         xmlDoc *new;
 501         if (!(new = xsltApplyStylesheet(m->stylesheet, rdoc, 0)))
 502         {
 503             yaz_log(YLOG_WARN, "XSLT transformation failed");
 504             return 0;
 505         }
 506         xmlFreeDoc(rdoc);
 507         rdoc = new;
 508     }
 509     if (global_parameters.dump_records)
 510     {
 511         fprintf(stderr, "Record:\n----------------\n");
 512 #if LIBXML_VERSION >= 20600
 513         xmlDocFormatDump(stderr, rdoc, 1);
 514 #else
 515         xmlDocDump(stderr, rdoc);
 516 #endif
 517     }
 518     return rdoc;
 519 }
 520
 521 // Extract what appears to be years from buf, storing highest and
 522 // lowest values.
 523 static int extract_years(const char *buf, int *first, int *last)
 524 {
 525     *first = -1;
 526     *last = -1;
 527     while (*buf)
 528     {
 529         const char *e;
 530         int len;
 531
 532         while (*buf && !isdigit(*buf))
 533             buf++;
 534         len = 0;
 535         for (e = buf; *e && isdigit(*e); e++)
 536             len++;
 537         if (len == 4)
 538         {
 539             int value = atoi(buf);
 540             if (*first < 0 || value < *first)
 541                 *first = value;
 542             if (*last < 0 || value > *last)
 543                 *last = value;
 544         }
 545         buf = e;
 546     }
 547     return *first;
 548 }
 549
 550 static struct record *ingest_record(struct client *cl, Z_External *rec)
 551 {
 552     xmlDoc *xdoc = normalize_record(cl, rec);
 553     xmlNode *root, *n;
 554     struct record *res;
 555     struct record_cluster *cluster;
 556     struct session *se = cl->session;
 557     xmlChar *mergekey, *mergekey_norm;
 558     xmlChar *type = 0;
 559     xmlChar *value = 0;
 560     struct conf_service *service = global_parameters.server->service;
 561
 562     if (!xdoc)
 563         return 0;
 564
 565     root = xmlDocGetRootElement(xdoc);
 566     if (!(mergekey = xmlGetProp(root, (xmlChar *) "mergekey")))
 567     {
 568         yaz_log(YLOG_WARN, "No mergekey found in record");
 569         xmlFreeDoc(xdoc);
 570         return 0;
 571     }
 572
 573     res = nmem_malloc(se->nmem, sizeof(struct record));
 574     res->next = 0;
 575     res->client = cl;
 576     res->metadata = nmem_malloc(se->nmem,
 577             sizeof(struct record_metadata*) * service->num_metadata);
 578     memset(res->metadata, 0, sizeof(struct record_metadata*) * service->num_metadata);
 579
 580     mergekey_norm = (xmlChar *) nmem_strdup(se->nmem, (char*) mergekey);
 581     xmlFree(mergekey);
 582     normalize_mergekey((char *) mergekey_norm, 0);
 583
 584     cluster = reclist_insert(se->reclist, res, (char *) mergekey_norm,
 585                              &se->total_merged);
 586     if (global_parameters.dump_records)
 587         yaz_log(YLOG_LOG, "Cluster id %d from %s (#%d)", cluster->recid,
 588                 cl->database->url, cl->records);
 589     if (!cluster)
 590     {
 591         /* no room for record */
 592         xmlFreeDoc(xdoc);
 593         return 0;
 594     }
 595     relevance_newrec(se->relevance, cluster);
 596
 597     for (n = root->children; n; n = n->next)
 598     {
 599         if (type)
 600             xmlFree(type);
 601         if (value)
 602             xmlFree(value);
 603         type = value = 0;
 604
 605         if (n->type != XML_ELEMENT_NODE)
 606             continue;
 607         if (!strcmp((const char *) n->name, "metadata"))
 608         {
 609             struct conf_metadata *md = 0;
 610             struct conf_sortkey *sk = 0;
 611             struct record_metadata **wheretoput, *newm;
 612             int imeta;
 613             int first, last;
 614
 615             type = xmlGetProp(n, (xmlChar *) "type");
 616             value = xmlNodeListGetString(xdoc, n->children, 0);
 617
 618             if (!type || !value)
 619                 continue;
 620
 621             // First, find out what field we're looking at
 622             for (imeta = 0; imeta < service->num_metadata; imeta++)
 623                 if (!strcmp((const char *) type, service->metadata[imeta].name))
 624                 {
 625                     md = &service->metadata[imeta];
 626                     if (md->sortkey_offset >= 0)
 627                         sk = &service->sortkeys[md->sortkey_offset];
 628                     break;
 629                 }
 630             if (!md)
 631             {
 632                 yaz_log(YLOG_WARN, "Ignoring unknown metadata element: %s", type);
 633                 continue;
 634             }
 635
 636             // Find out where we are putting it
 637             if (md->merge == Metadata_merge_no)
 638                 wheretoput = &res->metadata[imeta];
 639             else
 640                 wheretoput = &cluster->metadata[imeta];
 641
 642             // Put it there
 643             newm = nmem_malloc(se->nmem, sizeof(struct record_metadata));
 644             newm->next = 0;
 645             if (md->type == Metadata_type_generic)
 646             {
 647                 char *p, *pe;
 648                 for (p = (char *) value; *p && isspace(*p); p++)
 649                     ;
 650                 for (pe = p + strlen(p) - 1;
 651                         pe > p && strchr(" ,/.:([", *pe); pe--)
 652                     *pe = '\0';
 653                 newm->data.text = nmem_strdup(se->nmem, p);
 654
 655             }
 656             else if (md->type == Metadata_type_year)
 657             {
 658                 if (extract_years((char *) value, &first, &last) < 0)
 659                     continue;
 660             }
 661             else
 662             {
 663                 yaz_log(YLOG_WARN, "Unknown type in metadata element %s", type);
 664                 continue;
 665             }
 666             if (md->type == Metadata_type_year && md->merge != Metadata_merge_range)
 667             {
 668                 yaz_log(YLOG_WARN, "Only range merging supported for years");
 669                 continue;
 670             }
 671             if (md->merge == Metadata_merge_unique)
 672             {
 673                 struct record_metadata *mnode;
 674                 for (mnode = *wheretoput; mnode; mnode = mnode->next)
 675                     if (!strcmp((const char *) mnode->data.text, newm->data.text))
 676                         break;
 677                 if (!mnode)
 678                 {
 679                     newm->next = *wheretoput;
 680                     *wheretoput = newm;
 681                 }
 682             }
 683             else if (md->merge == Metadata_merge_longest)
 684             {
 685                 if (!*wheretoput ||
 686                         strlen(newm->data.text) > strlen((*wheretoput)->data.text))
 687                 {
 688                     *wheretoput = newm;
 689                     if (sk)
 690                     {
 691                         char *s = nmem_strdup(se->nmem, newm->data.text);
 692                         if (!cluster->sortkeys[md->sortkey_offset])
 693                             cluster->sortkeys[md->sortkey_offset] =
 694                                 nmem_malloc(se->nmem, sizeof(union data_types));
 695                         normalize_mergekey(s,
 696                                 (sk->type == Metadata_sortkey_skiparticle));
 697                         cluster->sortkeys[md->sortkey_offset]->text = s;
 698                     }
 699                 }
 700             }
 701             else if (md->merge == Metadata_merge_all || md->merge == Metadata_merge_no)
 702             {
 703                 newm->next = *wheretoput;
 704                 *wheretoput = newm;
 705             }
 706             else if (md->merge == Metadata_merge_range)
 707             {
 708                 assert(md->type == Metadata_type_year);
 709                 if (!*wheretoput)
 710                 {
 711                     *wheretoput = newm;
 712                     (*wheretoput)->data.number.min = first;
 713                     (*wheretoput)->data.number.max = last;
 714                     if (sk)
 715                         cluster->sortkeys[md->sortkey_offset] = &newm->data;
 716                 }
 717                 else
 718                 {
 719                     if (first < (*wheretoput)->data.number.min)
 720                         (*wheretoput)->data.number.min = first;
 721                     if (last > (*wheretoput)->data.number.max)
 722                         (*wheretoput)->data.number.max = last;
 723                 }
 724 #ifdef GAGA
 725                 if (sk)
 726                 {
 727                     union data_types *sdata = cluster->sortkeys[md->sortkey_offset];
 728                     yaz_log(YLOG_LOG, "SK range: %d-%d", sdata->number.min, sdata->number.max);
 729                 }
 730 #endif
 731             }
 732             else
 733                 yaz_log(YLOG_WARN, "Don't know how to merge on element name %s", md->name);
 734
 735             if (md->rank)
 736                 relevance_countwords(se->relevance, cluster,
 737                                      (char *) value, md->rank);
 738             if (md->termlist)
 739             {
 740                 if (md->type == Metadata_type_year)
 741                 {
 742                     char year[64];
 743                     sprintf(year, "%d", last);
 744                     add_facet(se, (char *) type, year);
 745                     if (first != last)
 746                     {
 747                         sprintf(year, "%d", first);
 748                         add_facet(se, (char *) type, year);
 749                     }
 750                 }
 751                 else
 752                     add_facet(se, (char *) type, (char *) value);
 753             }
 754             xmlFree(type);
 755             xmlFree(value);
 756             type = value = 0;
 757         }
 758         else
 759             yaz_log(YLOG_WARN, "Unexpected element %s in internal record", n->name);
 760     }
 761     if (type)
 762         xmlFree(type);
 763     if (value)
 764         xmlFree(value);
 765
 766     xmlFreeDoc(xdoc);
 767
 768     relevance_donerecord(se->relevance, cluster);
 769     se->total_records++;
 770
 771     return res;
 772 }
 773
 774 // Retrieve first defined value for 'name' for given database.
 775 // Will be extended to take into account user associated with session
 776 char *session_setting_oneval(struct session *s, struct database *db, int offset)
 777 {
 778     if (!db->settings[offset])
 779         return 0;
 780     return db->settings[offset]->value;
 781 }
 782
 783 static void ingest_records(struct client *cl, Z_Records *r)
 784 {
 785 #if USE_TIMING
 786     yaz_timing_t t = yaz_timing_create();
 787 #endif
 788     struct record *rec;
 789     struct session *s = cl->session;
 790     Z_NamePlusRecordList *rlist;
 791     int i;
 792
 793     if (r->which != Z_Records_DBOSD)
 794         return;
 795     rlist = r->u.databaseOrSurDiagnostics;
 796     for (i = 0; i < rlist->num_records; i++)
 797     {
 798         Z_NamePlusRecord *npr = rlist->records[i];
 799
 800         cl->records++;
 801         if (npr->which != Z_NamePlusRecord_databaseRecord)
 802         {
 803             yaz_log(YLOG_WARN,
 804                     "Unexpected record type, probably diagnostic %s",
 805                     cl->database->url);
 806             continue;
 807         }
 808
 809         rec = ingest_record(cl, npr->u.databaseRecord);
 810         if (!rec)
 811             continue;
 812     }
 813     if (s->watchlist[SESSION_WATCH_RECORDS].fun && rlist->num_records)
 814         session_alert_watch(s, SESSION_WATCH_RECORDS);
 815
 816 #if USE_TIMING
 817     yaz_timing_stop(t);
 818     yaz_log(YLOG_LOG, "ingest_records %6.5f %3.2f %3.2f",
 819             yaz_timing_get_real(t), yaz_timing_get_user(t),
 820             yaz_timing_get_sys(t));
 821     yaz_timing_destroy(&t);
 822 #endif
 823 }
 824
 825 static void do_presentResponse(IOCHAN i, Z_APDU *a)
 826 {
 827     struct connection *co = iochan_getdata(i);
 828     struct client *cl = co->client;
 829     Z_PresentResponse *r = a->u.presentResponse;
 830
 831     if (r->records) {
 832         Z_Records *recs = r->records;
 833         if (recs->which == Z_Records_NSD)
 834         {
 835             yaz_log(YLOG_WARN, "Non-surrogate diagnostic %s",
 836                     cl->database->url);
 837             cl->diagnostic = *recs->u.nonSurrogateDiagnostic->condition;
 838             cl->state = Client_Error;
 839         }
 840     }
 841
 842     if (!*r->presentStatus && cl->state != Client_Error)
 843     {
 844         yaz_log(YLOG_DEBUG, "Good Present response %s",
 845                 cl->database->url);
 846         ingest_records(cl, r->records);
 847         cl->state = Client_Idle;
 848     }
 849     else if (*r->presentStatus)
 850     {
 851         yaz_log(YLOG_WARN, "Bad Present response %s",
 852                 cl->database->url);
 853         cl->state = Client_Error;
 854     }
 855 }
 856
 857 static void handler(IOCHAN i, int event)
 858 {
 859     struct connection *co = iochan_getdata(i);
 860     struct client *cl = co->client;
 861     struct session *se = 0;
 862
 863     if (cl)
 864         se = cl->session;
 865     else
 866     {
 867         yaz_log(YLOG_WARN, "Destroying orphan connection");
 868         connection_destroy(co);
 869         return;
 870     }
 871
 872     if (co->state == Conn_Connecting && event & EVENT_OUTPUT)
 873     {
 874         int errcode;
 875         socklen_t errlen = sizeof(errcode);
 876
 877         if (getsockopt(cs_fileno(co->link), SOL_SOCKET, SO_ERROR, &errcode,
 878             &errlen) < 0 || errcode != 0)
 879         {
 880             client_fatal(cl);
 881             return;
 882         }
 883         else
 884         {
 885             yaz_log(YLOG_DEBUG, "Connect OK");
 886             co->state = Conn_Open;
 887             if (cl)
 888                 cl->state = Client_Connected;
 889         }
 890     }
 891
 892     else if (event & EVENT_INPUT)
 893     {
 894         int len = cs_get(co->link, &co->ibuf, &co->ibufsize);
 895
 896         if (len < 0)
 897         {
 898             yaz_log(YLOG_WARN|YLOG_ERRNO, "Error reading from %s",
 899                     cl->database->url);
 900             connection_destroy(co);
 901             return;
 902         }
 903         else if (len == 0)
 904         {
 905             yaz_log(YLOG_WARN, "EOF reading from %s", cl->database->url);
 906             connection_destroy(co);
 907             return;
 908         }
 909         else if (len > 1) // We discard input if we have no connection
 910         {
 911             co->state = Conn_Open;
 912
 913             if (cl && (cl->requestid == se->requestid || cl->state == Client_Initializing))
 914             {
 915                 Z_APDU *a;
 916
 917                 odr_reset(global_parameters.odr_in);
 918                 odr_setbuf(global_parameters.odr_in, co->ibuf, len, 0);
 919                 if (!z_APDU(global_parameters.odr_in, &a, 0, 0))
 920                 {
 921                     client_fatal(cl);
 922                     return;
 923                 }
 924                 switch (a->which)
 925                 {
 926                     case Z_APDU_initResponse:
 927                         do_initResponse(i, a);
 928                         break;
 929                     case Z_APDU_searchResponse:
 930                         do_searchResponse(i, a);
 931                         break;
 932                     case Z_APDU_presentResponse:
 933                         do_presentResponse(i, a);
 934                         break;
 935                     case Z_APDU_close:
 936                         do_closeResponse(i, a);
 937                         break;
 938                     default:
 939                         yaz_log(YLOG_WARN,
 940                                 "Unexpected Z39.50 response from %s",
 941                                 cl->database->url);
 942                         client_fatal(cl);
 943                         return;
 944                 }
 945                 // We aren't expecting staggered output from target
 946                 // if (cs_more(t->link))
 947                 //    iochan_setevent(i, EVENT_INPUT);
 948             }
 949             else  // we throw away response and go to idle mode
 950             {
 951                 yaz_log(YLOG_DEBUG, "Ignoring result of expired operation");
 952                 cl->state = Client_Idle;
 953             }
 954         }
 955         /* if len==1 we do nothing but wait for more input */
 956     }
 957
 958     if (cl->state == Client_Connected) {
 959         send_init(i);
 960     }
 961
 962     if (cl->state == Client_Idle)
 963     {
 964         if (cl->requestid != se->requestid && *se->query) {
 965             send_search(i);
 966         }
 967         else if (cl->hits > 0 && cl->records < global_parameters.toget &&
 968             cl->records < cl->hits) {
 969             send_present(i);
 970         }
 971     }
 972 }
 973
 974 // Disassociate connection from client
 975 static void connection_release(struct connection *co)
 976 {
 977     struct client *cl = co->client;
 978
 979     yaz_log(YLOG_DEBUG, "Connection release %s", co->host->hostport);
 980     if (!cl)
 981         return;
 982     cl->connection = 0;
 983     co->client = 0;
 984 }
 985
 986 // Close connection and recycle structure
 987 static void connection_destroy(struct connection *co)
 988 {
 989     struct host *h = co->host;
 990     cs_close(co->link);
 991     iochan_destroy(co->iochan);
 992
 993     yaz_log(YLOG_DEBUG, "Connection destroy %s", co->host->hostport);
 994     if (h->connections == co)
 995         h->connections = co->next;
 996     else
 997     {
 998         struct connection *pco;
 999         for (pco = h->connections; pco && pco->next != co; pco = pco->next)
1000             ;
1001         if (pco)
1002             pco->next = co->next;
1003         else
1004             abort();
1005     }
1006     if (co->client)
1007     {
1008         if (co->client->state != Client_Idle)
1009             co->client->state = Client_Disconnected;
1010         co->client->connection = 0;
1011     }
1012     co->next = connection_freelist;
1013     connection_freelist = co;
1014 }
1015
1016 // Creates a new connection for client, associated with the host of
1017 // client's database
1018 static struct connection *connection_create(struct client *cl)
1019 {
1020     struct connection *new;
1021     COMSTACK link;
1022     int res;
1023     void *addr;
1024
1025
1026     if (!(link = cs_create(tcpip_type, 0, PROTO_Z3950)))
1027         {
1028             yaz_log(YLOG_FATAL|YLOG_ERRNO, "Failed to create comstack");
1029             exit(1);
1030         }
1031
1032     if (0 == strlen(global_parameters.zproxy_override)){
1033         /* no Z39.50 proxy needed - direct connect */
1034         yaz_log(YLOG_DEBUG, "Connection create %s", cl->database->url);
1035
1036         if (!(addr = cs_straddr(link, cl->database->host->ipport)))
1037             {
1038                 yaz_log(YLOG_WARN|YLOG_ERRNO,
1039                         "Lookup of IP address %s failed",
1040                         cl->database->host->ipport);
1041                 return 0;
1042             }
1043
1044     } else {
1045         /* Z39.50 proxy connect */
1046         yaz_log(YLOG_DEBUG, "Connection create %s proxy %s",
1047                 cl->database->url, global_parameters.zproxy_override);
1048
1049         if (!(addr = cs_straddr(link, global_parameters.zproxy_override)))
1050             {
1051                 yaz_log(YLOG_WARN|YLOG_ERRNO,
1052                         "Lookup of IP address %s failed",
1053                         global_parameters.zproxy_override);
1054                 return 0;
1055             }
1056     }
1057
1058     res = cs_connect(link, addr);
1059     if (res < 0)
1060     {
1061         yaz_log(YLOG_WARN|YLOG_ERRNO, "cs_connect %s", cl->database->url);
1062         return 0;
1063     }
1064
1065     if ((new = connection_freelist))
1066         connection_freelist = new->next;
1067     else
1068     {
1069         new = xmalloc(sizeof (struct connection));
1070         new->ibuf = 0;
1071         new->ibufsize = 0;
1072     }
1073     new->state = Conn_Connecting;
1074     new->host = cl->database->host;
1075     new->next = new->host->connections;
1076     new->host->connections = new;
1077     new->client = cl;
1078     cl->connection = new;
1079     new->link = link;
1080
1081     new->iochan = iochan_create(cs_fileno(link), 0, handler, 0);
1082     iochan_setdata(new->iochan, new);
1083     new->iochan->next = channel_list;
1084     channel_list = new->iochan;
1085     return new;
1086 }
1087
1088 // Close connection and set state to error
1089 static void client_fatal(struct client *cl)
1090 {
1091     yaz_log(YLOG_WARN, "Fatal error from %s", cl->database->url);
1092     connection_destroy(cl->connection);
1093     cl->state = Client_Error;
1094 }
1095
1096 // Ensure that client has a connection associated
1097 static int client_prep_connection(struct client *cl)
1098 {
1099     struct connection *co;
1100     struct session *se = cl->session;
1101     struct host *host = cl->database->host;
1102
1103     co = cl->connection;
1104
1105     yaz_log(YLOG_DEBUG, "Client prep %s", cl->database->url);
1106
1107     if (!co)
1108     {
1109         // See if someone else has an idle connection
1110         // We should look at timestamps here to select the longest-idle connection
1111         for (co = host->connections; co; co = co->next)
1112             if (co->state == Conn_Open && (!co->client || co->client->session != se))
1113                 break;
1114         if (co)
1115         {
1116             connection_release(co);
1117             cl->connection = co;
1118             co->client = cl;
1119         }
1120         else
1121             co = connection_create(cl);
1122     }
1123     if (co)
1124     {
1125         if (co->state == Conn_Connecting)
1126         {
1127             cl->state = Client_Connecting;
1128             iochan_setflag(co->iochan, EVENT_OUTPUT);
1129         }
1130         else if (co->state == Conn_Open)
1131         {
1132             if (cl->state == Client_Error || cl->state == Client_Disconnected)
1133                 cl->state = Client_Idle;
1134             iochan_setflag(co->iochan, EVENT_OUTPUT);
1135         }
1136         return 1;
1137     }
1138     else
1139         return 0;
1140 }
1141
1142 #ifdef GAGA // Moved to database.c
1143
1144 // This function will most likely vanish when a proper target profile mechanism is
1145 // introduced.
1146 void load_simpletargets(const char *fn)
1147 {
1148     FILE *f = fopen(fn, "r");
1149     char line[256];
1150
1151     if (!f)
1152     {
1153         yaz_log(YLOG_WARN|YLOG_ERRNO, "open %s", fn);
1154         exit(1);
1155     }
1156
1157     while (fgets(line, 255, f))
1158     {
1159         char *url, *db;
1160         char *name;
1161         struct host *host;
1162         struct database *database;
1163
1164         if (strncmp(line, "target ", 7))
1165             continue;
1166         line[strlen(line) - 1] = '\0';
1167
1168         if ((name = strchr(line, ';')))
1169             *(name++) = '\0';
1170
1171         url = line + 7;
1172         if ((db = strchr(url, '/')))
1173             *(db++) = '\0';
1174         else
1175             db = "Default";
1176
1177         yaz_log(YLOG_LOG, "Target: %s, '%s'", url, db);
1178         for (host = hosts; host; host = host->next)
1179             if (!strcmp((const char *) url, host->hostport))
1180                 break;
1181         if (!host)
1182         {
1183             struct addrinfo *addrinfo, hints;
1184             char *port;
1185             char ipport[128];
1186             unsigned char addrbuf[4];
1187             int res;
1188
1189             host = xmalloc(sizeof(struct host));
1190             host->hostport = xstrdup(url);
1191             host->connections = 0;
1192
1193             if ((port = strchr(url, ':')))
1194                 *(port++) = '\0';
1195             else
1196                 port = "210";
1197
1198             hints.ai_flags = 0;
1199             hints.ai_family = PF_INET;
1200             hints.ai_socktype = SOCK_STREAM;
1201             hints.ai_protocol = IPPROTO_TCP;
1202             hints.ai_addrlen = 0;
1203             hints.ai_addr = 0;
1204             hints.ai_canonname = 0;
1205             hints.ai_next = 0;
1206             // This is not robust code. It assumes that getaddrinfo returns AF_INET
1207             // address.
1208             if ((res = getaddrinfo(url, port, &hints, &addrinfo)))
1209             {
1210                 yaz_log(YLOG_WARN, "Failed to resolve %s: %s", url, gai_strerror(res));
1211                 xfree(host->hostport);
1212                 xfree(host);
1213                 continue;
1214             }
1215             assert(addrinfo->ai_family == PF_INET);
1216             memcpy(addrbuf, &((struct sockaddr_in*)addrinfo->ai_addr)->sin_addr.s_addr, 4);
1217             sprintf(ipport, "%u.%u.%u.%u:%s",
1218                     addrbuf[0], addrbuf[1], addrbuf[2], addrbuf[3], port);
1219             host->ipport = xstrdup(ipport);
1220             freeaddrinfo(addrinfo);
1221             host->next = hosts;
1222             hosts = host;
1223         }
1224         database = xmalloc(sizeof(struct database));
1225         database->host = host;
1226         database->url = xmalloc(strlen(url) + strlen(db) + 2);
1227         strcpy(database->url, url);
1228         strcat(database->url, "/");
1229         strcat(database->url, db);
1230         if (name)
1231             database->name = xstrdup(name);
1232         else
1233             database->name = 0;
1234
1235         database->databases = xmalloc(2 * sizeof(char *));
1236         database->databases[0] = xstrdup(db);
1237         database->databases[1] = 0;
1238         database->errors = 0;
1239         database->qprofile = 0;
1240         database->rprofile = database_retrieval_profile(database);
1241         database->next = databases;
1242         databases = database;
1243
1244     }
1245     fclose(f);
1246 }
1247
1248 #endif
1249
1250 static struct client *client_create(void)
1251 {
1252     struct client *r;
1253     if (client_freelist)
1254     {
1255         r = client_freelist;
1256         client_freelist = client_freelist->next;
1257     }
1258     else
1259         r = xmalloc(sizeof(struct client));
1260     r->database = 0;
1261     r->connection = 0;
1262     r->session = 0;
1263     r->hits = 0;
1264     r->records = 0;
1265     r->setno = 0;
1266     r->requestid = -1;
1267     r->diagnostic = 0;
1268     r->state = Client_Disconnected;
1269     r->next = 0;
1270     return r;
1271 }
1272
1273 void client_destroy(struct client *c)
1274 {
1275     struct session *se = c->session;
1276     if (c == se->clients)
1277         se->clients = c->next;
1278     else
1279     {
1280         struct client *cc;
1281         for (cc = se->clients; cc && cc->next != c; cc = cc->next)
1282             ;
1283         if (cc)
1284             cc->next = c->next;
1285     }
1286     if (c->connection)
1287         connection_release(c->connection);
1288     c->next = client_freelist;
1289     client_freelist = c;
1290 }
1291
1292 void session_set_watch(struct session *s, int what, session_watchfun fun, void *data)
1293 {
1294     s->watchlist[what].fun = fun;
1295     s->watchlist[what].data = data;
1296 }
1297
1298 void session_alert_watch(struct session *s, int what)
1299 {
1300     if (!s->watchlist[what].fun)
1301         return;
1302     (*s->watchlist[what].fun)(s->watchlist[what].data);
1303     s->watchlist[what].fun = 0;
1304     s->watchlist[what].data = 0;
1305 }
1306
1307 //callback for grep_databases
1308 static void select_targets_callback(void *context, struct database *db)
1309 {
1310     struct session *se = (struct session*) context;
1311     struct client *cl = client_create();
1312     cl->database = db;
1313     cl->session = se;
1314     cl->next = se->clients;
1315     se->clients = cl;
1316 }
1317
1318 // This should be extended with parameters to control selection criteria
1319 // Associates a set of clients with a session;
1320 int select_targets(struct session *se, struct database_criterion *crit)
1321 {
1322     while (se->clients)
1323         client_destroy(se->clients);
1324
1325     return grep_databases(se, crit, select_targets_callback);
1326 }
1327
1328 int session_active_clients(struct session *s)
1329 {
1330     struct client *c;
1331     int res = 0;
1332
1333     for (c = s->clients; c; c = c->next)
1334         if (c->connection && (c->state == Client_Connecting ||
1335                     c->state == Client_Initializing ||
1336                     c->state == Client_Searching ||
1337                     c->state == Client_Presenting))
1338             res++;
1339
1340     return res;
1341 }
1342
1343 // parses crit1=val1,crit2=val2|val3,...
1344 static struct database_criterion *parse_filter(NMEM m, const char *buf)
1345 {
1346     struct database_criterion *res = 0;
1347     char **values;
1348     int num;
1349     int i;
1350
1351     if (!buf || !*buf)
1352         return 0;
1353     nmem_strsplit(m, ",", buf,  &values, &num);
1354     for (i = 0; i < num; i++)
1355     {
1356         char **subvalues;
1357         int subnum;
1358         int subi;
1359         struct database_criterion *new = nmem_malloc(m, sizeof(*new));
1360         char *eq = strchr(values[i], '=');
1361         if (!eq)
1362         {
1363             yaz_log(YLOG_WARN, "Missing equal-sign in filter");
1364             return 0;
1365         }
1366         *(eq++) = '\0';
1367         new->name = values[i];
1368         nmem_strsplit(m, "|", eq, &subvalues, &subnum);
1369         new->values = 0;
1370         for (subi = 0; subi < subnum; subi++)
1371         {
1372             struct database_criterion_value *newv = nmem_malloc(m, sizeof(*newv));
1373             newv->value = subvalues[subi];
1374             newv->next = new->values;
1375             new->values = newv;
1376         }
1377         new->next = res;
1378         res = new;
1379     }
1380     return res;
1381 }
1382
1383 char *search(struct session *se, char *query, char *filter)
1384 {
1385     int live_channels = 0;
1386     struct client *cl;
1387     struct database_criterion *criteria;
1388
1389     yaz_log(YLOG_DEBUG, "Search");
1390
1391     nmem_reset(se->nmem);
1392     criteria = parse_filter(se->nmem, filter);
1393     strcpy(se->query, query);
1394     se->requestid++;
1395     // Release any existing clients
1396     select_targets(se, criteria);
1397     for (cl = se->clients; cl; cl = cl->next)
1398     {
1399         if (client_prep_connection(cl))
1400             live_channels++;
1401     }
1402     if (live_channels)
1403     {
1404         int maxrecs = live_channels * global_parameters.toget;
1405         se->num_termlists = 0;
1406         se->reclist = reclist_create(se->nmem, maxrecs);
1407         // This will be initialized in send_search()
1408         se->relevance = 0;
1409         se->total_records = se->total_hits = se->total_merged = 0;
1410         se->expected_maxrecs = maxrecs;
1411     }
1412     else
1413         return "NOTARGETS";
1414
1415     return 0;
1416 }
1417
1418 void destroy_session(struct session *s)
1419 {
1420     yaz_log(YLOG_LOG, "Destroying session");
1421     while (s->clients)
1422         client_destroy(s->clients);
1423     nmem_destroy(s->nmem);
1424     wrbuf_destroy(s->wrbuf);
1425 }
1426
1427 struct session *new_session()
1428 {
1429     int i;
1430     struct session *session = xmalloc(sizeof(*session));
1431
1432     yaz_log(YLOG_DEBUG, "New pazpar2 session");
1433
1434     session->total_hits = 0;
1435     session->total_records = 0;
1436     session->num_termlists = 0;
1437     session->reclist = 0;
1438     session->requestid = -1;
1439     session->clients = 0;
1440     session->expected_maxrecs = 0;
1441     session->query[0] = '\0';
1442     session->nmem = nmem_create();
1443     session->wrbuf = wrbuf_alloc();
1444     for (i = 0; i <= SESSION_WATCH_MAX; i++)
1445     {
1446         session->watchlist[i].data = 0;
1447         session->watchlist[i].fun = 0;
1448     }
1449
1450     return session;
1451 }
1452
1453 struct hitsbytarget *hitsbytarget(struct session *se, int *count)
1454 {
1455     static struct hitsbytarget res[1000]; // FIXME MM
1456     struct client *cl;
1457
1458     *count = 0;
1459     for (cl = se->clients; cl; cl = cl->next)
1460     {
1461         res[*count].id = cl->database->url;
1462         res[*count].name = cl->database->name;
1463         res[*count].hits = cl->hits;
1464         res[*count].records = cl->records;
1465         res[*count].diagnostic = cl->diagnostic;
1466         res[*count].state = client_states[cl->state];
1467         res[*count].connected  = cl->connection ? 1 : 0;
1468         (*count)++;
1469     }
1470
1471     return res;
1472 }
1473
1474 struct termlist_score **termlist(struct session *s, const char *name, int *num)
1475 {
1476     int i;
1477
1478     for (i = 0; i < s->num_termlists; i++)
1479         if (!strcmp((const char *) s->termlists[i].name, name))
1480             return termlist_highscore(s->termlists[i].termlist, num);
1481     return 0;
1482 }
1483
1484 #ifdef MISSING_HEADERS
1485 void report_nmem_stats(void)
1486 {
1487     size_t in_use, is_free;
1488
1489     nmem_get_memory_in_use(&in_use);
1490     nmem_get_memory_free(&is_free);
1491
1492     yaz_log(YLOG_LOG, "nmem stat: use=%ld free=%ld",
1493             (long) in_use, (long) is_free);
1494 }
1495 #endif
1496
1497 struct record_cluster *show_single(struct session *s, int id)
1498 {
1499     struct record_cluster *r;
1500
1501     reclist_rewind(s->reclist);
1502     while ((r = reclist_read_record(s->reclist)))
1503         if (r->recid == id)
1504             return r;
1505     return 0;
1506 }
1507
1508 struct record_cluster **show(struct session *s, struct reclist_sortparms *sp, int start,
1509         int *num, int *total, int *sumhits, NMEM nmem_show)
1510 {
1511     struct record_cluster **recs = nmem_malloc(nmem_show, *num
1512                                        * sizeof(struct record_cluster *));
1513     struct reclist_sortparms *spp;
1514     int i;
1515 #if USE_TIMING
1516     yaz_timing_t t = yaz_timing_create();
1517 #endif
1518
1519     for (spp = sp; spp; spp = spp->next)
1520         if (spp->type == Metadata_sortkey_relevance)
1521         {
1522             relevance_prepare_read(s->relevance, s->reclist);
1523             break;
1524         }
1525     reclist_sort(s->reclist, sp);
1526
1527     *total = s->reclist->num_records;
1528     *sumhits = s->total_hits;
1529
1530     for (i = 0; i < start; i++)
1531         if (!reclist_read_record(s->reclist))
1532         {
1533             *num = 0;
1534             recs = 0;
1535             break;
1536         }
1537
1538     for (i = 0; i < *num; i++)
1539     {
1540         struct record_cluster *r = reclist_read_record(s->reclist);
1541         if (!r)
1542         {
1543             *num = i;
1544             break;
1545         }
1546         recs[i] = r;
1547     }
1548 #if USE_TIMING
1549     yaz_timing_stop(t);
1550     yaz_log(YLOG_LOG, "show %6.5f %3.2f %3.2f",
1551             yaz_timing_get_real(t), yaz_timing_get_user(t),
1552             yaz_timing_get_sys(t));
1553     yaz_timing_destroy(&t);
1554 #endif
1555     return recs;
1556 }
1557
1558 void statistics(struct session *se, struct statistics *stat)
1559 {
1560     struct client *cl;
1561     int count = 0;
1562
1563     memset(stat, 0, sizeof(*stat));
1564     for (cl = se->clients; cl; cl = cl->next)
1565     {
1566         if (!cl->connection)
1567             stat->num_no_connection++;
1568         switch (cl->state)
1569         {
1570             case Client_Connecting: stat->num_connecting++; break;
1571             case Client_Initializing: stat->num_initializing++; break;
1572             case Client_Searching: stat->num_searching++; break;
1573             case Client_Presenting: stat->num_presenting++; break;
1574             case Client_Idle: stat->num_idle++; break;
1575             case Client_Failed: stat->num_failed++; break;
1576             case Client_Error: stat->num_error++; break;
1577             default: break;
1578         }
1579         count++;
1580     }
1581     stat->num_hits = se->total_hits;
1582     stat->num_records = se->total_records;
1583
1584     stat->num_clients = count;
1585 }
1586
1587 static void start_http_listener(void)
1588 {
1589     char hp[128] = "";
1590     struct conf_server *ser = global_parameters.server;
1591
1592     if (*global_parameters.listener_override)
1593         strcpy(hp, global_parameters.listener_override);
1594     else
1595     {
1596         strcpy(hp, ser->host ? ser->host : "");
1597         if (ser->port)
1598         {
1599             if (*hp)
1600                 strcat(hp, ":");
1601             sprintf(hp + strlen(hp), "%d", ser->port);
1602         }
1603     }
1604     http_init(hp);
1605 }
1606
1607 static void start_proxy(void)
1608 {
1609     char hp[128] = "";
1610     struct conf_server *ser = global_parameters.server;
1611
1612     if (*global_parameters.proxy_override)
1613         strcpy(hp, global_parameters.proxy_override);
1614     else if (ser->proxy_host || ser->proxy_port)
1615     {
1616         strcpy(hp, ser->proxy_host ? ser->proxy_host : "");
1617         if (ser->proxy_port)
1618         {
1619             if (*hp)
1620                 strcat(hp, ":");
1621             sprintf(hp + strlen(hp), "%d", ser->proxy_port);
1622         }
1623     }
1624     else
1625         return;
1626
1627     http_set_proxyaddr(hp, ser->myurl ? ser->myurl : "");
1628 }
1629
1630 static void start_zproxy(void)
1631 {
1632     struct conf_server *ser = global_parameters.server;
1633
1634     if (*global_parameters.zproxy_override){
1635         yaz_log(YLOG_LOG, "Z39.50 proxy  %s",
1636                 global_parameters.zproxy_override);
1637         return;
1638     }
1639
1640     else if (ser->zproxy_host || ser->zproxy_port)
1641     {
1642         char hp[128] = "";
1643
1644         strcpy(hp, ser->zproxy_host ? ser->zproxy_host : "");
1645         if (ser->zproxy_port)
1646         {
1647             if (*hp)
1648                 strcat(hp, ":");
1649             else
1650                 strcat(hp, "@:");
1651
1652             sprintf(hp + strlen(hp), "%d", ser->zproxy_port);
1653         }
1654         strcpy(global_parameters.zproxy_override, hp);
1655         yaz_log(YLOG_LOG, "Z39.50 proxy  %s",
1656                 global_parameters.zproxy_override);
1657
1658     }
1659     else
1660         return;
1661 }
1662
1663
1664
1665 int main(int argc, char **argv)
1666 {
1667     int ret;
1668     char *arg;
1669
1670     if (signal(SIGPIPE, SIG_IGN) == SIG_ERR)
1671         yaz_log(YLOG_WARN|YLOG_ERRNO, "signal");
1672
1673     yaz_log_init(YLOG_DEFAULT_LEVEL, "pazpar2", 0);
1674
1675     while ((ret = options("t:f:x:h:p:z:s:d", argv, argc, &arg)) != -2)
1676     {
1677         switch (ret) {
1678             case 'f':
1679                 if (!read_config(arg))
1680                     exit(1);
1681                 break;
1682             case 'h':
1683                 strcpy(global_parameters.listener_override, arg);
1684                 break;
1685             case 'p':
1686                 strcpy(global_parameters.proxy_override, arg);
1687                 break;
1688             case 'z':
1689                 strcpy(global_parameters.zproxy_override, arg);
1690                 break;
1691             case 't':
1692                 strcpy(global_parameters.settings_path_override, arg);
1693                 break;
1694             case 's':
1695                 load_simpletargets(arg);
1696                 break;
1697             case 'd':
1698                 global_parameters.dump_records = 1;
1699                 break;
1700             default:
1701                 fprintf(stderr, "Usage: pazpar2\n"
1702                         "    -f configfile\n"
1703                         "    -h [host:]port          (REST protocol listener)\n"
1704                         "    -C cclconfig\n"
1705                         "    -s simpletargetfile\n"
1706                         "    -p hostname[:portno]    (HTTP proxy)\n"
1707                         "    -z hostname[:portno]    (Z39.50 proxy)\n"
1708                         "    -d                      (show internal records)\n");
1709                 exit(1);
1710         }
1711     }
1712
1713     if (!config)
1714     {
1715         yaz_log(YLOG_FATAL, "Load config with -f");
1716         exit(1);
1717     }
1718     global_parameters.server = config->servers;
1719
1720     start_http_listener();
1721     start_proxy();
1722     start_zproxy();
1723
1724     if (*global_parameters.settings_path_override)
1725         settings_read(global_parameters.settings_path_override);
1726     else if (global_parameters.server->settings)
1727         settings_read(global_parameters.server->settings);
1728     else
1729         yaz_log(YLOG_WARN, "No settings-directory specified. Problems may well ensue!");
1730     prepare_databases();
1731     global_parameters.odr_in = odr_createmem(ODR_DECODE);
1732     global_parameters.odr_out = odr_createmem(ODR_ENCODE);
1733
1734     event_loop(&channel_list);
1735
1736     return 0;
1737 }
1738
1739 /*
1740  * Local variables:
1741  * c-basic-offset: 4
1742  * indent-tabs-mode: nil
1743  * End:
1744  * vim: shiftwidth=4 tabstop=8 expandtab
1745  */