src/pazpar2.c

   1 /* $Id: pazpar2.c,v 1.64 2007-04-08 20:52:09 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 //static struct conf_retrievalprofile *database_retrieval_profile(struct database *db);
  52 void session_alert_watch(struct session *s, int what);
  53 char *session_setting_oneval(struct session *s, struct database *db, int offset);
  54
  55 IOCHAN channel_list = 0;  // Master list of connections we're handling events to
  56
  57 static struct connection *connection_freelist = 0;
  58 static struct client *client_freelist = 0;
  59
  60 static char *client_states[] = {
  61     "Client_Connecting",
  62     "Client_Connected",
  63     "Client_Idle",
  64     "Client_Initializing",
  65     "Client_Searching",
  66     "Client_Presenting",
  67     "Client_Error",
  68     "Client_Failed",
  69     "Client_Disconnected",
  70     "Client_Stopped"
  71 };
  72
  73 // Note: Some things in this structure will eventually move to configuration
  74 struct parameters global_parameters =
  75 {
  76     "",
  77     "",
  78     "",
  79     "",
  80     0,
  81     0,
  82     30,
  83     "81",
  84     "Index Data PazPar2 (MasterKey)",
  85     VERSION,
  86     600, // 10 minutes
  87     60,
  88     100,
  89     MAX_CHUNK,
  90     0,
  91     0
  92 };
  93
  94 static int send_apdu(struct client *c, Z_APDU *a)
  95 {
  96     struct connection *co = c->connection;
  97     char *buf;
  98     int len, r;
  99
 100     if (!z_APDU(global_parameters.odr_out, &a, 0, 0))
 101     {
 102         odr_perror(global_parameters.odr_out, "Encoding APDU");
 103         abort();
 104     }
 105     buf = odr_getbuf(global_parameters.odr_out, &len, 0);
 106     r = cs_put(co->link, buf, len);
 107     if (r < 0)
 108     {
 109         yaz_log(YLOG_WARN, "cs_put: %s", cs_errmsg(cs_errno(co->link)));
 110         return -1;
 111     }
 112     else if (r == 1)
 113     {
 114         fprintf(stderr, "cs_put incomplete (ParaZ does not handle that)\n");
 115         exit(1);
 116     }
 117     odr_reset(global_parameters.odr_out); /* release the APDU structure  */
 118     co->state = Conn_Waiting;
 119     return 0;
 120 }
 121
 122
 123 static void send_init(IOCHAN i)
 124 {
 125
 126     struct connection *co = iochan_getdata(i);
 127     struct client *cl = co->client;
 128     Z_APDU *a = zget_APDU(global_parameters.odr_out, Z_APDU_initRequest);
 129
 130     a->u.initRequest->implementationId = global_parameters.implementationId;
 131     a->u.initRequest->implementationName = global_parameters.implementationName;
 132     a->u.initRequest->implementationVersion =
 133         global_parameters.implementationVersion;
 134     ODR_MASK_SET(a->u.initRequest->options, Z_Options_search);
 135     ODR_MASK_SET(a->u.initRequest->options, Z_Options_present);
 136     ODR_MASK_SET(a->u.initRequest->options, Z_Options_namedResultSets);
 137
 138     ODR_MASK_SET(a->u.initRequest->protocolVersion, Z_ProtocolVersion_1);
 139     ODR_MASK_SET(a->u.initRequest->protocolVersion, Z_ProtocolVersion_2);
 140     ODR_MASK_SET(a->u.initRequest->protocolVersion, Z_ProtocolVersion_3);
 141
 142
 143     /* add virtual host if tunneling through Z39.50 proxy */
 144
 145     if (0 < strlen(global_parameters.zproxy_override)
 146         && 0 < strlen(cl->database->url))
 147         yaz_oi_set_string_oidval(&a->u.initRequest->otherInfo,
 148                                  global_parameters.odr_out, VAL_PROXY,
 149                                  1, cl->database->url);
 150
 151
 152
 153     if (send_apdu(cl, a) >= 0)
 154     {
 155         iochan_setflags(i, EVENT_INPUT);
 156         cl->state = Client_Initializing;
 157     }
 158     else
 159         cl->state = Client_Error;
 160     odr_reset(global_parameters.odr_out);
 161 }
 162
 163 static void pull_terms(NMEM nmem, struct ccl_rpn_node *n, char **termlist, int *num)
 164 {
 165     switch (n->kind)
 166     {
 167         case CCL_RPN_AND:
 168         case CCL_RPN_OR:
 169         case CCL_RPN_NOT:
 170         case CCL_RPN_PROX:
 171             pull_terms(nmem, n->u.p[0], termlist, num);
 172             pull_terms(nmem, n->u.p[1], termlist, num);
 173             break;
 174         case CCL_RPN_TERM:
 175             termlist[(*num)++] = nmem_strdup(nmem, n->u.t.term);
 176             break;
 177         default: // NOOP
 178             break;
 179     }
 180 }
 181
 182 // Extract terms from query into null-terminated termlist
 183 static void extract_terms(NMEM nmem, struct ccl_rpn_node *query, char **termlist)
 184 {
 185     int num = 0;
 186
 187     pull_terms(nmem, query, termlist, &num);
 188     termlist[num] = 0;
 189 }
 190
 191 static void send_search(IOCHAN i)
 192 {
 193     struct connection *co = iochan_getdata(i);
 194     struct client *cl = co->client;
 195     struct session *se = cl->session;
 196     struct database *db = cl->database;
 197     Z_APDU *a = zget_APDU(global_parameters.odr_out, Z_APDU_searchRequest);
 198     int ndb, cerror, cpos;
 199     char **databaselist;
 200     Z_Query *zquery;
 201     struct ccl_rpn_node *cn;
 202     int ssub = 0, lslb = 100000, mspn = 10;
 203     char *recsyn;
 204     char *piggyback;
 205
 206     yaz_log(YLOG_DEBUG, "Sending search");
 207
 208     cn = ccl_find_str(db->ccl_map, se->query, &cerror, &cpos);
 209     if (!cn)
 210         return;
 211
 212     if (!se->relevance)
 213     {
 214         // Initialize relevance structure with query terms
 215         char *p[512];
 216         extract_terms(se->nmem, cn, p);
 217         se->relevance = relevance_create(se->nmem, (const char **) p,
 218                 se->expected_maxrecs);
 219     }
 220
 221     a->u.searchRequest->query = zquery = odr_malloc(global_parameters.odr_out,
 222             sizeof(Z_Query));
 223     zquery->which = Z_Query_type_1;
 224     zquery->u.type_1 = ccl_rpn_query(global_parameters.odr_out, cn);
 225     ccl_rpn_delete(cn);
 226
 227     for (ndb = 0; db->databases[ndb]; ndb++)
 228         ;
 229     databaselist = odr_malloc(global_parameters.odr_out, sizeof(char*) * ndb);
 230     for (ndb = 0; db->databases[ndb]; ndb++)
 231         databaselist[ndb] = db->databases[ndb];
 232
 233     if (!(piggyback = session_setting_oneval(se, db, PZ_PIGGYBACK)) || *piggyback == '1')
 234     {
 235         if ((recsyn = session_setting_oneval(se, db, PZ_NATIVESYNTAX)))
 236             a->u.searchRequest->preferredRecordSyntax =
 237                     yaz_str_to_z3950oid(global_parameters.odr_out,
 238                     CLASS_RECSYN, recsyn);
 239         a->u.searchRequest->smallSetUpperBound = &ssub;
 240         a->u.searchRequest->largeSetLowerBound = &lslb;
 241         a->u.searchRequest->mediumSetPresentNumber = &mspn;
 242     }
 243     a->u.searchRequest->resultSetName = "Default";
 244     a->u.searchRequest->databaseNames = databaselist;
 245     a->u.searchRequest->num_databaseNames = ndb;
 246
 247     if (send_apdu(cl, a) >= 0)
 248     {
 249         iochan_setflags(i, EVENT_INPUT);
 250         cl->state = Client_Searching;
 251         cl->requestid = se->requestid;
 252     }
 253     else
 254         cl->state = Client_Error;
 255
 256     odr_reset(global_parameters.odr_out);
 257 }
 258
 259 static void send_present(IOCHAN i)
 260 {
 261     struct connection *co = iochan_getdata(i);
 262     struct client *cl = co->client;
 263     struct session *se = cl->session;
 264     struct database *db = cl->database;
 265     Z_APDU *a = zget_APDU(global_parameters.odr_out, Z_APDU_presentRequest);
 266     int toget;
 267     int start = cl->records + 1;
 268     char *recsyn;
 269
 270     toget = global_parameters.chunk;
 271     if (toget > global_parameters.toget - cl->records)
 272         toget = global_parameters.toget - cl->records;
 273     if (toget > cl->hits - cl->records)
 274         toget = cl->hits - cl->records;
 275
 276     yaz_log(YLOG_DEBUG, "Trying to present %d records\n", toget);
 277
 278     a->u.presentRequest->resultSetStartPoint = &start;
 279     a->u.presentRequest->numberOfRecordsRequested = &toget;
 280
 281     a->u.presentRequest->resultSetId = "Default";
 282
 283     if ((recsyn = session_setting_oneval(se, db, PZ_NATIVESYNTAX)))
 284         a->u.presentRequest->preferredRecordSyntax =
 285                 yaz_str_to_z3950oid(global_parameters.odr_out,
 286                 CLASS_RECSYN, recsyn);
 287
 288     if (send_apdu(cl, a) >= 0)
 289     {
 290         iochan_setflags(i, EVENT_INPUT);
 291         cl->state = Client_Presenting;
 292     }
 293     else
 294         cl->state = Client_Error;
 295     odr_reset(global_parameters.odr_out);
 296 }
 297
 298 static void do_initResponse(IOCHAN i, Z_APDU *a)
 299 {
 300     struct connection *co = iochan_getdata(i);
 301     struct client *cl = co->client;
 302     Z_InitResponse *r = a->u.initResponse;
 303
 304     yaz_log(YLOG_DEBUG, "Init response %s", cl->database->url);
 305
 306     if (*r->result)
 307     {
 308         cl->state = Client_Idle;
 309     }
 310     else
 311         cl->state = Client_Failed; // FIXME need to do something to the connection
 312 }
 313
 314 static void do_searchResponse(IOCHAN i, Z_APDU *a)
 315 {
 316     struct connection *co = iochan_getdata(i);
 317     struct client *cl = co->client;
 318     struct session *se = cl->session;
 319     Z_SearchResponse *r = a->u.searchResponse;
 320
 321     yaz_log(YLOG_DEBUG, "Search response %s (status=%d)",
 322             cl->database->url, *r->searchStatus);
 323
 324     if (*r->searchStatus)
 325     {
 326         cl->hits = *r->resultCount;
 327         se->total_hits += cl->hits;
 328         if (r->presentStatus && !*r->presentStatus && r->records)
 329         {
 330             yaz_log(YLOG_DEBUG, "Records in search response %s",
 331                     cl->database->url);
 332             ingest_records(cl, r->records);
 333         }
 334         cl->state = Client_Idle;
 335     }
 336     else
 337     {          /*"FAILED"*/
 338         cl->hits = 0;
 339         cl->state = Client_Error;
 340         if (r->records) {
 341             Z_Records *recs = r->records;
 342             if (recs->which == Z_Records_NSD)
 343             {
 344                 yaz_log(YLOG_WARN,
 345                         "Search response: Non-surrogate diagnostic %s",
 346                         cl->database->url);
 347                 cl->diagnostic = *recs->u.nonSurrogateDiagnostic->condition;
 348                 cl->state = Client_Error;
 349             }
 350         }
 351     }
 352 }
 353
 354 static void do_closeResponse(IOCHAN i, Z_APDU *a)
 355 {
 356     struct connection *co = iochan_getdata(i);
 357     struct client *cl = co->client;
 358     /* Z_Close *r = a->u.close; */
 359
 360     yaz_log(YLOG_WARN, "Close response %s", cl->database->url);
 361
 362     cl->state = Client_Failed;
 363     connection_destroy(co);
 364 }
 365
 366
 367 char *normalize_mergekey(char *buf, int skiparticle)
 368 {
 369     char *p = buf, *pout = buf;
 370
 371     if (skiparticle)
 372     {
 373         char firstword[64];
 374         char articles[] = "the den der die des an a "; // must end in space
 375
 376         while (*p && !isalnum(*p))
 377             p++;
 378         pout = firstword;
 379         while (*p && *p != ' ' && pout - firstword < 62)
 380             *(pout++) = tolower(*(p++));
 381         *(pout++) = ' ';
 382         *(pout++) = '\0';
 383         if (!strstr(articles, firstword))
 384             p = buf;
 385         pout = buf;
 386     }
 387
 388     while (*p)
 389     {
 390         while (*p && !isalnum(*p))
 391             p++;
 392         while (isalnum(*p))
 393             *(pout++) = tolower(*(p++));
 394         if (*p)
 395             *(pout++) = ' ';
 396         while (*p && !isalnum(*p))
 397             p++;
 398     }
 399     if (buf != pout)
 400         do {
 401             *(pout--) = '\0';
 402         }
 403         while (pout > buf && *pout == ' ');
 404
 405     return buf;
 406 }
 407
 408 static void add_facet(struct session *s, const char *type, const char *value)
 409 {
 410     int i;
 411
 412     if (!*value)
 413         return;
 414     for (i = 0; i < s->num_termlists; i++)
 415         if (!strcmp(s->termlists[i].name, type))
 416             break;
 417     if (i == s->num_termlists)
 418     {
 419         if (i == SESSION_MAX_TERMLISTS)
 420         {
 421             yaz_log(YLOG_FATAL, "Too many termlists");
 422             exit(1);
 423         }
 424         s->termlists[i].name = nmem_strdup(s->nmem, type);
 425         s->termlists[i].termlist = termlist_create(s->nmem, s->expected_maxrecs, 15);
 426         s->num_termlists = i + 1;
 427     }
 428     termlist_insert(s->termlists[i].termlist, value);
 429 }
 430
 431 static xmlDoc *normalize_record(struct client *cl, Z_External *rec)
 432 {
 433     struct database_retrievalmap *m;
 434     struct database *db = cl->database;
 435     xmlNode *res;
 436     xmlDoc *rdoc;
 437
 438     // First normalize to XML
 439     if (db->yaz_marc)
 440     {
 441         char *buf;
 442         int len;
 443         if (rec->which != Z_External_octet)
 444         {
 445             yaz_log(YLOG_WARN, "Unexpected external branch, probably BER %s",
 446                     cl->database->url);
 447             return 0;
 448         }
 449         buf = (char*) rec->u.octet_aligned->buf;
 450         len = rec->u.octet_aligned->len;
 451         if (yaz_marc_read_iso2709(db->yaz_marc, buf, len) < 0)
 452         {
 453             yaz_log(YLOG_WARN, "Failed to decode MARC %s",
 454                     cl->database->url);
 455             return 0;
 456         }
 457         if (yaz_marc_write_xml(db->yaz_marc, &res,
 458                     "http://www.loc.gov/MARC21/slim", 0, 0) < 0)
 459         {
 460             yaz_log(YLOG_WARN, "Failed to encode as XML %s",
 461                     cl->database->url);
 462             return 0;
 463         }
 464         rdoc = xmlNewDoc((xmlChar *) "1.0");
 465         xmlDocSetRootElement(rdoc, res);
 466     }
 467     else
 468     {
 469         yaz_log(YLOG_FATAL, "Unknown native_syntax in normalize_record");
 470         exit(1);
 471     }
 472
 473     if (global_parameters.dump_records)
 474     {
 475         fprintf(stderr, "Input Record (normalized):\n----------------\n");
 476 #if LIBXML_VERSION >= 20600
 477         xmlDocFormatDump(stderr, rdoc, 1);
 478 #else
 479         xmlDocDump(stderr, rdoc);
 480 #endif
 481     }
 482
 483     for (m = db->map; m; m = m->next)
 484     {
 485         xmlDoc *new;
 486         if (!(new = xsltApplyStylesheet(m->stylesheet, rdoc, 0)))
 487         {
 488             yaz_log(YLOG_WARN, "XSLT transformation failed");
 489             return 0;
 490         }
 491         xmlFreeDoc(rdoc);
 492         rdoc = new;
 493     }
 494     if (global_parameters.dump_records)
 495     {
 496         fprintf(stderr, "Record:\n----------------\n");
 497 #if LIBXML_VERSION >= 20600
 498         xmlDocFormatDump(stderr, rdoc, 1);
 499 #else
 500         xmlDocDump(stderr, rdoc);
 501 #endif
 502     }
 503     return rdoc;
 504 }
 505
 506 // Extract what appears to be years from buf, storing highest and
 507 // lowest values.
 508 static int extract_years(const char *buf, int *first, int *last)
 509 {
 510     *first = -1;
 511     *last = -1;
 512     while (*buf)
 513     {
 514         const char *e;
 515         int len;
 516
 517         while (*buf && !isdigit(*buf))
 518             buf++;
 519         len = 0;
 520         for (e = buf; *e && isdigit(*e); e++)
 521             len++;
 522         if (len == 4)
 523         {
 524             int value = atoi(buf);
 525             if (*first < 0 || value < *first)
 526                 *first = value;
 527             if (*last < 0 || value > *last)
 528                 *last = value;
 529         }
 530         buf = e;
 531     }
 532     return *first;
 533 }
 534
 535 static struct record *ingest_record(struct client *cl, Z_External *rec)
 536 {
 537     xmlDoc *xdoc = normalize_record(cl, rec);
 538     xmlNode *root, *n;
 539     struct record *res;
 540     struct record_cluster *cluster;
 541     struct session *se = cl->session;
 542     xmlChar *mergekey, *mergekey_norm;
 543     xmlChar *type = 0;
 544     xmlChar *value = 0;
 545     struct conf_service *service = global_parameters.server->service;
 546
 547     if (!xdoc)
 548         return 0;
 549
 550     root = xmlDocGetRootElement(xdoc);
 551     if (!(mergekey = xmlGetProp(root, (xmlChar *) "mergekey")))
 552     {
 553         yaz_log(YLOG_WARN, "No mergekey found in record");
 554         xmlFreeDoc(xdoc);
 555         return 0;
 556     }
 557
 558     res = nmem_malloc(se->nmem, sizeof(struct record));
 559     res->next = 0;
 560     res->client = cl;
 561     res->metadata = nmem_malloc(se->nmem,
 562             sizeof(struct record_metadata*) * service->num_metadata);
 563     memset(res->metadata, 0, sizeof(struct record_metadata*) * service->num_metadata);
 564
 565     mergekey_norm = (xmlChar *) nmem_strdup(se->nmem, (char*) mergekey);
 566     xmlFree(mergekey);
 567     normalize_mergekey((char *) mergekey_norm, 0);
 568
 569     cluster = reclist_insert(se->reclist, res, (char *) mergekey_norm,
 570                              &se->total_merged);
 571     if (global_parameters.dump_records)
 572         yaz_log(YLOG_LOG, "Cluster id %d from %s (#%d)", cluster->recid,
 573                 cl->database->url, cl->records);
 574     if (!cluster)
 575     {
 576         /* no room for record */
 577         xmlFreeDoc(xdoc);
 578         return 0;
 579     }
 580     relevance_newrec(se->relevance, cluster);
 581
 582     for (n = root->children; n; n = n->next)
 583     {
 584         if (type)
 585             xmlFree(type);
 586         if (value)
 587             xmlFree(value);
 588         type = value = 0;
 589
 590         if (n->type != XML_ELEMENT_NODE)
 591             continue;
 592         if (!strcmp((const char *) n->name, "metadata"))
 593         {
 594             struct conf_metadata *md = 0;
 595             struct conf_sortkey *sk = 0;
 596             struct record_metadata **wheretoput, *newm;
 597             int imeta;
 598             int first, last;
 599
 600             type = xmlGetProp(n, (xmlChar *) "type");
 601             value = xmlNodeListGetString(xdoc, n->children, 0);
 602
 603             if (!type || !value)
 604                 continue;
 605
 606             // First, find out what field we're looking at
 607             for (imeta = 0; imeta < service->num_metadata; imeta++)
 608                 if (!strcmp((const char *) type, service->metadata[imeta].name))
 609                 {
 610                     md = &service->metadata[imeta];
 611                     if (md->sortkey_offset >= 0)
 612                         sk = &service->sortkeys[md->sortkey_offset];
 613                     break;
 614                 }
 615             if (!md)
 616             {
 617                 yaz_log(YLOG_WARN, "Ignoring unknown metadata element: %s", type);
 618                 continue;
 619             }
 620
 621             // Find out where we are putting it
 622             if (md->merge == Metadata_merge_no)
 623                 wheretoput = &res->metadata[imeta];
 624             else
 625                 wheretoput = &cluster->metadata[imeta];
 626
 627             // Put it there
 628             newm = nmem_malloc(se->nmem, sizeof(struct record_metadata));
 629             newm->next = 0;
 630             if (md->type == Metadata_type_generic)
 631             {
 632                 char *p, *pe;
 633                 for (p = (char *) value; *p && isspace(*p); p++)
 634                     ;
 635                 for (pe = p + strlen(p) - 1;
 636                         pe > p && strchr(" ,/.:([", *pe); pe--)
 637                     *pe = '\0';
 638                 newm->data.text = nmem_strdup(se->nmem, p);
 639
 640             }
 641             else if (md->type == Metadata_type_year)
 642             {
 643                 if (extract_years((char *) value, &first, &last) < 0)
 644                     continue;
 645             }
 646             else
 647             {
 648                 yaz_log(YLOG_WARN, "Unknown type in metadata element %s", type);
 649                 continue;
 650             }
 651             if (md->type == Metadata_type_year && md->merge != Metadata_merge_range)
 652             {
 653                 yaz_log(YLOG_WARN, "Only range merging supported for years");
 654                 continue;
 655             }
 656             if (md->merge == Metadata_merge_unique)
 657             {
 658                 struct record_metadata *mnode;
 659                 for (mnode = *wheretoput; mnode; mnode = mnode->next)
 660                     if (!strcmp((const char *) mnode->data.text, newm->data.text))
 661                         break;
 662                 if (!mnode)
 663                 {
 664                     newm->next = *wheretoput;
 665                     *wheretoput = newm;
 666                 }
 667             }
 668             else if (md->merge == Metadata_merge_longest)
 669             {
 670                 if (!*wheretoput ||
 671                         strlen(newm->data.text) > strlen((*wheretoput)->data.text))
 672                 {
 673                     *wheretoput = newm;
 674                     if (sk)
 675                     {
 676                         char *s = nmem_strdup(se->nmem, newm->data.text);
 677                         if (!cluster->sortkeys[md->sortkey_offset])
 678                             cluster->sortkeys[md->sortkey_offset] =
 679                                 nmem_malloc(se->nmem, sizeof(union data_types));
 680                         normalize_mergekey(s,
 681                                 (sk->type == Metadata_sortkey_skiparticle));
 682                         cluster->sortkeys[md->sortkey_offset]->text = s;
 683                     }
 684                 }
 685             }
 686             else if (md->merge == Metadata_merge_all || md->merge == Metadata_merge_no)
 687             {
 688                 newm->next = *wheretoput;
 689                 *wheretoput = newm;
 690             }
 691             else if (md->merge == Metadata_merge_range)
 692             {
 693                 assert(md->type == Metadata_type_year);
 694                 if (!*wheretoput)
 695                 {
 696                     *wheretoput = newm;
 697                     (*wheretoput)->data.number.min = first;
 698                     (*wheretoput)->data.number.max = last;
 699                     if (sk)
 700                         cluster->sortkeys[md->sortkey_offset] = &newm->data;
 701                 }
 702                 else
 703                 {
 704                     if (first < (*wheretoput)->data.number.min)
 705                         (*wheretoput)->data.number.min = first;
 706                     if (last > (*wheretoput)->data.number.max)
 707                         (*wheretoput)->data.number.max = last;
 708                 }
 709 #ifdef GAGA
 710                 if (sk)
 711                 {
 712                     union data_types *sdata = cluster->sortkeys[md->sortkey_offset];
 713                     yaz_log(YLOG_LOG, "SK range: %d-%d", sdata->number.min, sdata->number.max);
 714                 }
 715 #endif
 716             }
 717             else
 718                 yaz_log(YLOG_WARN, "Don't know how to merge on element name %s", md->name);
 719
 720             if (md->rank)
 721                 relevance_countwords(se->relevance, cluster,
 722                                      (char *) value, md->rank);
 723             if (md->termlist)
 724             {
 725                 if (md->type == Metadata_type_year)
 726                 {
 727                     char year[64];
 728                     sprintf(year, "%d", last);
 729                     add_facet(se, (char *) type, year);
 730                     if (first != last)
 731                     {
 732                         sprintf(year, "%d", first);
 733                         add_facet(se, (char *) type, year);
 734                     }
 735                 }
 736                 else
 737                     add_facet(se, (char *) type, (char *) value);
 738             }
 739             xmlFree(type);
 740             xmlFree(value);
 741             type = value = 0;
 742         }
 743         else
 744             yaz_log(YLOG_WARN, "Unexpected element %s in internal record", n->name);
 745     }
 746     if (type)
 747         xmlFree(type);
 748     if (value)
 749         xmlFree(value);
 750
 751     xmlFreeDoc(xdoc);
 752
 753     relevance_donerecord(se->relevance, cluster);
 754     se->total_records++;
 755
 756     return res;
 757 }
 758
 759 // Retrieve first defined value for 'name' for given database.
 760 // Will be extended to take into account user associated with session
 761 char *session_setting_oneval(struct session *s, struct database *db, int offset)
 762 {
 763     if (!db->settings[offset])
 764         return 0;
 765     return db->settings[offset]->value;
 766 }
 767
 768 static void ingest_records(struct client *cl, Z_Records *r)
 769 {
 770 #if USE_TIMING
 771     yaz_timing_t t = yaz_timing_create();
 772 #endif
 773     struct record *rec;
 774     struct session *s = cl->session;
 775     Z_NamePlusRecordList *rlist;
 776     int i;
 777
 778     if (r->which != Z_Records_DBOSD)
 779         return;
 780     rlist = r->u.databaseOrSurDiagnostics;
 781     for (i = 0; i < rlist->num_records; i++)
 782     {
 783         Z_NamePlusRecord *npr = rlist->records[i];
 784
 785         cl->records++;
 786         if (npr->which != Z_NamePlusRecord_databaseRecord)
 787         {
 788             yaz_log(YLOG_WARN,
 789                     "Unexpected record type, probably diagnostic %s",
 790                     cl->database->url);
 791             continue;
 792         }
 793
 794         rec = ingest_record(cl, npr->u.databaseRecord);
 795         if (!rec)
 796             continue;
 797     }
 798     if (s->watchlist[SESSION_WATCH_RECORDS].fun && rlist->num_records)
 799         session_alert_watch(s, SESSION_WATCH_RECORDS);
 800
 801 #if USE_TIMING
 802     yaz_timing_stop(t);
 803     yaz_log(YLOG_LOG, "ingest_records %6.5f %3.2f %3.2f",
 804             yaz_timing_get_real(t), yaz_timing_get_user(t),
 805             yaz_timing_get_sys(t));
 806     yaz_timing_destroy(&t);
 807 #endif
 808 }
 809
 810 static void do_presentResponse(IOCHAN i, Z_APDU *a)
 811 {
 812     struct connection *co = iochan_getdata(i);
 813     struct client *cl = co->client;
 814     Z_PresentResponse *r = a->u.presentResponse;
 815
 816     if (r->records) {
 817         Z_Records *recs = r->records;
 818         if (recs->which == Z_Records_NSD)
 819         {
 820             yaz_log(YLOG_WARN, "Non-surrogate diagnostic %s",
 821                     cl->database->url);
 822             cl->diagnostic = *recs->u.nonSurrogateDiagnostic->condition;
 823             cl->state = Client_Error;
 824         }
 825     }
 826
 827     if (!*r->presentStatus && cl->state != Client_Error)
 828     {
 829         yaz_log(YLOG_DEBUG, "Good Present response %s",
 830                 cl->database->url);
 831         ingest_records(cl, r->records);
 832         cl->state = Client_Idle;
 833     }
 834     else if (*r->presentStatus)
 835     {
 836         yaz_log(YLOG_WARN, "Bad Present response %s",
 837                 cl->database->url);
 838         cl->state = Client_Error;
 839     }
 840 }
 841
 842 static void handler(IOCHAN i, int event)
 843 {
 844     struct connection *co = iochan_getdata(i);
 845     struct client *cl = co->client;
 846     struct session *se = 0;
 847
 848     if (cl)
 849         se = cl->session;
 850     else
 851     {
 852         yaz_log(YLOG_WARN, "Destroying orphan connection");
 853         connection_destroy(co);
 854         return;
 855     }
 856
 857     if (co->state == Conn_Connecting && event & EVENT_OUTPUT)
 858     {
 859         int errcode;
 860         socklen_t errlen = sizeof(errcode);
 861
 862         if (getsockopt(cs_fileno(co->link), SOL_SOCKET, SO_ERROR, &errcode,
 863             &errlen) < 0 || errcode != 0)
 864         {
 865             client_fatal(cl);
 866             return;
 867         }
 868         else
 869         {
 870             yaz_log(YLOG_DEBUG, "Connect OK");
 871             co->state = Conn_Open;
 872             if (cl)
 873                 cl->state = Client_Connected;
 874         }
 875     }
 876
 877     else if (event & EVENT_INPUT)
 878     {
 879         int len = cs_get(co->link, &co->ibuf, &co->ibufsize);
 880
 881         if (len < 0)
 882         {
 883             yaz_log(YLOG_WARN|YLOG_ERRNO, "Error reading from %s",
 884                     cl->database->url);
 885             connection_destroy(co);
 886             return;
 887         }
 888         else if (len == 0)
 889         {
 890             yaz_log(YLOG_WARN, "EOF reading from %s", cl->database->url);
 891             connection_destroy(co);
 892             return;
 893         }
 894         else if (len > 1) // We discard input if we have no connection
 895         {
 896             co->state = Conn_Open;
 897
 898             if (cl && (cl->requestid == se->requestid || cl->state == Client_Initializing))
 899             {
 900                 Z_APDU *a;
 901
 902                 odr_reset(global_parameters.odr_in);
 903                 odr_setbuf(global_parameters.odr_in, co->ibuf, len, 0);
 904                 if (!z_APDU(global_parameters.odr_in, &a, 0, 0))
 905                 {
 906                     client_fatal(cl);
 907                     return;
 908                 }
 909                 switch (a->which)
 910                 {
 911                     case Z_APDU_initResponse:
 912                         do_initResponse(i, a);
 913                         break;
 914                     case Z_APDU_searchResponse:
 915                         do_searchResponse(i, a);
 916                         break;
 917                     case Z_APDU_presentResponse:
 918                         do_presentResponse(i, a);
 919                         break;
 920                     case Z_APDU_close:
 921                         do_closeResponse(i, a);
 922                         break;
 923                     default:
 924                         yaz_log(YLOG_WARN,
 925                                 "Unexpected Z39.50 response from %s",
 926                                 cl->database->url);
 927                         client_fatal(cl);
 928                         return;
 929                 }
 930                 // We aren't expecting staggered output from target
 931                 // if (cs_more(t->link))
 932                 //    iochan_setevent(i, EVENT_INPUT);
 933             }
 934             else  // we throw away response and go to idle mode
 935             {
 936                 yaz_log(YLOG_DEBUG, "Ignoring result of expired operation");
 937                 cl->state = Client_Idle;
 938             }
 939         }
 940         /* if len==1 we do nothing but wait for more input */
 941     }
 942
 943     if (cl->state == Client_Connected) {
 944         send_init(i);
 945     }
 946
 947     if (cl->state == Client_Idle)
 948     {
 949         if (cl->requestid != se->requestid && *se->query) {
 950             send_search(i);
 951         }
 952         else if (cl->hits > 0 && cl->records < global_parameters.toget &&
 953             cl->records < cl->hits) {
 954             send_present(i);
 955         }
 956     }
 957 }
 958
 959 // Disassociate connection from client
 960 static void connection_release(struct connection *co)
 961 {
 962     struct client *cl = co->client;
 963
 964     yaz_log(YLOG_DEBUG, "Connection release %s", co->host->hostport);
 965     if (!cl)
 966         return;
 967     cl->connection = 0;
 968     co->client = 0;
 969 }
 970
 971 // Close connection and recycle structure
 972 static void connection_destroy(struct connection *co)
 973 {
 974     struct host *h = co->host;
 975     cs_close(co->link);
 976     iochan_destroy(co->iochan);
 977
 978     yaz_log(YLOG_DEBUG, "Connection destroy %s", co->host->hostport);
 979     if (h->connections == co)
 980         h->connections = co->next;
 981     else
 982     {
 983         struct connection *pco;
 984         for (pco = h->connections; pco && pco->next != co; pco = pco->next)
 985             ;
 986         if (pco)
 987             pco->next = co->next;
 988         else
 989             abort();
 990     }
 991     if (co->client)
 992     {
 993         if (co->client->state != Client_Idle)
 994             co->client->state = Client_Disconnected;
 995         co->client->connection = 0;
 996     }
 997     co->next = connection_freelist;
 998     connection_freelist = co;
 999 }
1000
1001 // Creates a new connection for client, associated with the host of
1002 // client's database
1003 static struct connection *connection_create(struct client *cl)
1004 {
1005     struct connection *new;
1006     COMSTACK link;
1007     int res;
1008     void *addr;
1009
1010
1011     if (!(link = cs_create(tcpip_type, 0, PROTO_Z3950)))
1012         {
1013             yaz_log(YLOG_FATAL|YLOG_ERRNO, "Failed to create comstack");
1014             exit(1);
1015         }
1016
1017     if (0 == strlen(global_parameters.zproxy_override)){
1018         /* no Z39.50 proxy needed - direct connect */
1019         yaz_log(YLOG_DEBUG, "Connection create %s", cl->database->url);
1020
1021         if (!(addr = cs_straddr(link, cl->database->host->ipport)))
1022             {
1023                 yaz_log(YLOG_WARN|YLOG_ERRNO,
1024                         "Lookup of IP address %s failed",
1025                         cl->database->host->ipport);
1026                 return 0;
1027             }
1028
1029     } else {
1030         /* Z39.50 proxy connect */
1031         yaz_log(YLOG_DEBUG, "Connection create %s proxy %s",
1032                 cl->database->url, global_parameters.zproxy_override);
1033
1034         if (!(addr = cs_straddr(link, global_parameters.zproxy_override)))
1035             {
1036                 yaz_log(YLOG_WARN|YLOG_ERRNO,
1037                         "Lookup of IP address %s failed",
1038                         global_parameters.zproxy_override);
1039                 return 0;
1040             }
1041     }
1042
1043     res = cs_connect(link, addr);
1044     if (res < 0)
1045     {
1046         yaz_log(YLOG_WARN|YLOG_ERRNO, "cs_connect %s", cl->database->url);
1047         return 0;
1048     }
1049
1050     if ((new = connection_freelist))
1051         connection_freelist = new->next;
1052     else
1053     {
1054         new = xmalloc(sizeof (struct connection));
1055         new->ibuf = 0;
1056         new->ibufsize = 0;
1057     }
1058     new->state = Conn_Connecting;
1059     new->host = cl->database->host;
1060     new->next = new->host->connections;
1061     new->host->connections = new;
1062     new->client = cl;
1063     cl->connection = new;
1064     new->link = link;
1065
1066     new->iochan = iochan_create(cs_fileno(link), 0, handler, 0);
1067     iochan_setdata(new->iochan, new);
1068     new->iochan->next = channel_list;
1069     channel_list = new->iochan;
1070     return new;
1071 }
1072
1073 // Close connection and set state to error
1074 static void client_fatal(struct client *cl)
1075 {
1076     yaz_log(YLOG_WARN, "Fatal error from %s", cl->database->url);
1077     connection_destroy(cl->connection);
1078     cl->state = Client_Error;
1079 }
1080
1081 // Ensure that client has a connection associated
1082 static int client_prep_connection(struct client *cl)
1083 {
1084     struct connection *co;
1085     struct session *se = cl->session;
1086     struct host *host = cl->database->host;
1087
1088     co = cl->connection;
1089
1090     yaz_log(YLOG_DEBUG, "Client prep %s", cl->database->url);
1091
1092     if (!co)
1093     {
1094         // See if someone else has an idle connection
1095         // We should look at timestamps here to select the longest-idle connection
1096         for (co = host->connections; co; co = co->next)
1097             if (co->state == Conn_Open && (!co->client || co->client->session != se))
1098                 break;
1099         if (co)
1100         {
1101             connection_release(co);
1102             cl->connection = co;
1103             co->client = cl;
1104         }
1105         else
1106             co = connection_create(cl);
1107     }
1108     if (co)
1109     {
1110         if (co->state == Conn_Connecting)
1111         {
1112             cl->state = Client_Connecting;
1113             iochan_setflag(co->iochan, EVENT_OUTPUT);
1114         }
1115         else if (co->state == Conn_Open)
1116         {
1117             if (cl->state == Client_Error || cl->state == Client_Disconnected)
1118                 cl->state = Client_Idle;
1119             iochan_setflag(co->iochan, EVENT_OUTPUT);
1120         }
1121         return 1;
1122     }
1123     else
1124         return 0;
1125 }
1126
1127 #ifdef GAGA // Moved to database.c
1128
1129 // This function will most likely vanish when a proper target profile mechanism is
1130 // introduced.
1131 void load_simpletargets(const char *fn)
1132 {
1133     FILE *f = fopen(fn, "r");
1134     char line[256];
1135
1136     if (!f)
1137     {
1138         yaz_log(YLOG_WARN|YLOG_ERRNO, "open %s", fn);
1139         exit(1);
1140     }
1141
1142     while (fgets(line, 255, f))
1143     {
1144         char *url, *db;
1145         char *name;
1146         struct host *host;
1147         struct database *database;
1148
1149         if (strncmp(line, "target ", 7))
1150             continue;
1151         line[strlen(line) - 1] = '\0';
1152
1153         if ((name = strchr(line, ';')))
1154             *(name++) = '\0';
1155
1156         url = line + 7;
1157         if ((db = strchr(url, '/')))
1158             *(db++) = '\0';
1159         else
1160             db = "Default";
1161
1162         yaz_log(YLOG_LOG, "Target: %s, '%s'", url, db);
1163         for (host = hosts; host; host = host->next)
1164             if (!strcmp((const char *) url, host->hostport))
1165                 break;
1166         if (!host)
1167         {
1168             struct addrinfo *addrinfo, hints;
1169             char *port;
1170             char ipport[128];
1171             unsigned char addrbuf[4];
1172             int res;
1173
1174             host = xmalloc(sizeof(struct host));
1175             host->hostport = xstrdup(url);
1176             host->connections = 0;
1177
1178             if ((port = strchr(url, ':')))
1179                 *(port++) = '\0';
1180             else
1181                 port = "210";
1182
1183             hints.ai_flags = 0;
1184             hints.ai_family = PF_INET;
1185             hints.ai_socktype = SOCK_STREAM;
1186             hints.ai_protocol = IPPROTO_TCP;
1187             hints.ai_addrlen = 0;
1188             hints.ai_addr = 0;
1189             hints.ai_canonname = 0;
1190             hints.ai_next = 0;
1191             // This is not robust code. It assumes that getaddrinfo returns AF_INET
1192             // address.
1193             if ((res = getaddrinfo(url, port, &hints, &addrinfo)))
1194             {
1195                 yaz_log(YLOG_WARN, "Failed to resolve %s: %s", url, gai_strerror(res));
1196                 xfree(host->hostport);
1197                 xfree(host);
1198                 continue;
1199             }
1200             assert(addrinfo->ai_family == PF_INET);
1201             memcpy(addrbuf, &((struct sockaddr_in*)addrinfo->ai_addr)->sin_addr.s_addr, 4);
1202             sprintf(ipport, "%u.%u.%u.%u:%s",
1203                     addrbuf[0], addrbuf[1], addrbuf[2], addrbuf[3], port);
1204             host->ipport = xstrdup(ipport);
1205             freeaddrinfo(addrinfo);
1206             host->next = hosts;
1207             hosts = host;
1208         }
1209         database = xmalloc(sizeof(struct database));
1210         database->host = host;
1211         database->url = xmalloc(strlen(url) + strlen(db) + 2);
1212         strcpy(database->url, url);
1213         strcat(database->url, "/");
1214         strcat(database->url, db);
1215         if (name)
1216             database->name = xstrdup(name);
1217         else
1218             database->name = 0;
1219
1220         database->databases = xmalloc(2 * sizeof(char *));
1221         database->databases[0] = xstrdup(db);
1222         database->databases[1] = 0;
1223         database->errors = 0;
1224         database->qprofile = 0;
1225         database->rprofile = database_retrieval_profile(database);
1226         database->next = databases;
1227         databases = database;
1228
1229     }
1230     fclose(f);
1231 }
1232
1233 #endif
1234
1235 static struct client *client_create(void)
1236 {
1237     struct client *r;
1238     if (client_freelist)
1239     {
1240         r = client_freelist;
1241         client_freelist = client_freelist->next;
1242     }
1243     else
1244         r = xmalloc(sizeof(struct client));
1245     r->database = 0;
1246     r->connection = 0;
1247     r->session = 0;
1248     r->hits = 0;
1249     r->records = 0;
1250     r->setno = 0;
1251     r->requestid = -1;
1252     r->diagnostic = 0;
1253     r->state = Client_Disconnected;
1254     r->next = 0;
1255     return r;
1256 }
1257
1258 void client_destroy(struct client *c)
1259 {
1260     struct session *se = c->session;
1261     if (c == se->clients)
1262         se->clients = c->next;
1263     else
1264     {
1265         struct client *cc;
1266         for (cc = se->clients; cc && cc->next != c; cc = cc->next)
1267             ;
1268         if (cc)
1269             cc->next = c->next;
1270     }
1271     if (c->connection)
1272         connection_release(c->connection);
1273     c->next = client_freelist;
1274     client_freelist = c;
1275 }
1276
1277 void session_set_watch(struct session *s, int what, session_watchfun fun, void *data)
1278 {
1279     s->watchlist[what].fun = fun;
1280     s->watchlist[what].data = data;
1281 }
1282
1283 void session_alert_watch(struct session *s, int what)
1284 {
1285     if (!s->watchlist[what].fun)
1286         return;
1287     (*s->watchlist[what].fun)(s->watchlist[what].data);
1288     s->watchlist[what].fun = 0;
1289     s->watchlist[what].data = 0;
1290 }
1291
1292 //callback for grep_databases
1293 static void select_targets_callback(void *context, struct database *db)
1294 {
1295     struct session *se = (struct session*) context;
1296     struct client *cl = client_create();
1297     cl->database = db;
1298     cl->session = se;
1299     cl->next = se->clients;
1300     se->clients = cl;
1301 }
1302
1303 // This should be extended with parameters to control selection criteria
1304 // Associates a set of clients with a session;
1305 int select_targets(struct session *se, struct database_criterion *crit)
1306 {
1307     while (se->clients)
1308         client_destroy(se->clients);
1309
1310     return grep_databases(se, crit, select_targets_callback);
1311 }
1312
1313 int session_active_clients(struct session *s)
1314 {
1315     struct client *c;
1316     int res = 0;
1317
1318     for (c = s->clients; c; c = c->next)
1319         if (c->connection && (c->state == Client_Connecting ||
1320                     c->state == Client_Initializing ||
1321                     c->state == Client_Searching ||
1322                     c->state == Client_Presenting))
1323             res++;
1324
1325     return res;
1326 }
1327
1328 // parses crit1=val1,crit2=val2|val3,...
1329 static struct database_criterion *parse_filter(NMEM m, const char *buf)
1330 {
1331     struct database_criterion *res = 0;
1332     char **values;
1333     int num;
1334     int i;
1335
1336     if (!buf || !*buf)
1337         return 0;
1338     nmem_strsplit(m, ",", buf,  &values, &num);
1339     for (i = 0; i < num; i++)
1340     {
1341         char **subvalues;
1342         int subnum;
1343         int subi;
1344         struct database_criterion *new = nmem_malloc(m, sizeof(*new));
1345         char *eq = strchr(values[i], '=');
1346         if (!eq)
1347         {
1348             yaz_log(YLOG_WARN, "Missing equal-sign in filter");
1349             return 0;
1350         }
1351         *(eq++) = '\0';
1352         new->name = values[i];
1353         nmem_strsplit(m, "|", eq, &subvalues, &subnum);
1354         new->values = 0;
1355         for (subi = 0; subi < subnum; subi++)
1356         {
1357             struct database_criterion_value *newv = nmem_malloc(m, sizeof(*newv));
1358             newv->value = subvalues[subi];
1359             newv->next = new->values;
1360             new->values = newv;
1361         }
1362         new->next = res;
1363         res = new;
1364     }
1365     return res;
1366 }
1367
1368 char *search(struct session *se, char *query, char *filter)
1369 {
1370     int live_channels = 0;
1371     struct client *cl;
1372     struct database_criterion *criteria;
1373
1374     yaz_log(YLOG_DEBUG, "Search");
1375
1376     nmem_reset(se->nmem);
1377     criteria = parse_filter(se->nmem, filter);
1378     strcpy(se->query, query);
1379     se->requestid++;
1380     // Release any existing clients
1381     select_targets(se, criteria);
1382     for (cl = se->clients; cl; cl = cl->next)
1383     {
1384         if (client_prep_connection(cl))
1385             live_channels++;
1386     }
1387     if (live_channels)
1388     {
1389         int maxrecs = live_channels * global_parameters.toget;
1390         se->num_termlists = 0;
1391         se->reclist = reclist_create(se->nmem, maxrecs);
1392         // This will be initialized in send_search()
1393         se->relevance = 0;
1394         se->total_records = se->total_hits = se->total_merged = 0;
1395         se->expected_maxrecs = maxrecs;
1396     }
1397     else
1398         return "NOTARGETS";
1399
1400     return 0;
1401 }
1402
1403 void destroy_session(struct session *s)
1404 {
1405     yaz_log(YLOG_LOG, "Destroying session");
1406     while (s->clients)
1407         client_destroy(s->clients);
1408     nmem_destroy(s->nmem);
1409     wrbuf_destroy(s->wrbuf);
1410 }
1411
1412 struct session *new_session()
1413 {
1414     int i;
1415     struct session *session = xmalloc(sizeof(*session));
1416
1417     yaz_log(YLOG_DEBUG, "New pazpar2 session");
1418
1419     session->total_hits = 0;
1420     session->total_records = 0;
1421     session->num_termlists = 0;
1422     session->reclist = 0;
1423     session->requestid = -1;
1424     session->clients = 0;
1425     session->expected_maxrecs = 0;
1426     session->query[0] = '\0';
1427     session->nmem = nmem_create();
1428     session->wrbuf = wrbuf_alloc();
1429     for (i = 0; i <= SESSION_WATCH_MAX; i++)
1430     {
1431         session->watchlist[i].data = 0;
1432         session->watchlist[i].fun = 0;
1433     }
1434
1435     return session;
1436 }
1437
1438 struct hitsbytarget *hitsbytarget(struct session *se, int *count)
1439 {
1440     static struct hitsbytarget res[1000]; // FIXME MM
1441     struct client *cl;
1442
1443     *count = 0;
1444     for (cl = se->clients; cl; cl = cl->next)
1445     {
1446         res[*count].id = cl->database->url;
1447         res[*count].name = cl->database->name;
1448         res[*count].hits = cl->hits;
1449         res[*count].records = cl->records;
1450         res[*count].diagnostic = cl->diagnostic;
1451         res[*count].state = client_states[cl->state];
1452         res[*count].connected  = cl->connection ? 1 : 0;
1453         (*count)++;
1454     }
1455
1456     return res;
1457 }
1458
1459 struct termlist_score **termlist(struct session *s, const char *name, int *num)
1460 {
1461     int i;
1462
1463     for (i = 0; i < s->num_termlists; i++)
1464         if (!strcmp((const char *) s->termlists[i].name, name))
1465             return termlist_highscore(s->termlists[i].termlist, num);
1466     return 0;
1467 }
1468
1469 #ifdef MISSING_HEADERS
1470 void report_nmem_stats(void)
1471 {
1472     size_t in_use, is_free;
1473
1474     nmem_get_memory_in_use(&in_use);
1475     nmem_get_memory_free(&is_free);
1476
1477     yaz_log(YLOG_LOG, "nmem stat: use=%ld free=%ld",
1478             (long) in_use, (long) is_free);
1479 }
1480 #endif
1481
1482 struct record_cluster *show_single(struct session *s, int id)
1483 {
1484     struct record_cluster *r;
1485
1486     reclist_rewind(s->reclist);
1487     while ((r = reclist_read_record(s->reclist)))
1488         if (r->recid == id)
1489             return r;
1490     return 0;
1491 }
1492
1493 struct record_cluster **show(struct session *s, struct reclist_sortparms *sp, int start,
1494         int *num, int *total, int *sumhits, NMEM nmem_show)
1495 {
1496     struct record_cluster **recs = nmem_malloc(nmem_show, *num
1497                                        * sizeof(struct record_cluster *));
1498     struct reclist_sortparms *spp;
1499     int i;
1500 #if USE_TIMING
1501     yaz_timing_t t = yaz_timing_create();
1502 #endif
1503
1504     for (spp = sp; spp; spp = spp->next)
1505         if (spp->type == Metadata_sortkey_relevance)
1506         {
1507             relevance_prepare_read(s->relevance, s->reclist);
1508             break;
1509         }
1510     reclist_sort(s->reclist, sp);
1511
1512     *total = s->reclist->num_records;
1513     *sumhits = s->total_hits;
1514
1515     for (i = 0; i < start; i++)
1516         if (!reclist_read_record(s->reclist))
1517         {
1518             *num = 0;
1519             recs = 0;
1520             break;
1521         }
1522
1523     for (i = 0; i < *num; i++)
1524     {
1525         struct record_cluster *r = reclist_read_record(s->reclist);
1526         if (!r)
1527         {
1528             *num = i;
1529             break;
1530         }
1531         recs[i] = r;
1532     }
1533 #if USE_TIMING
1534     yaz_timing_stop(t);
1535     yaz_log(YLOG_LOG, "show %6.5f %3.2f %3.2f",
1536             yaz_timing_get_real(t), yaz_timing_get_user(t),
1537             yaz_timing_get_sys(t));
1538     yaz_timing_destroy(&t);
1539 #endif
1540     return recs;
1541 }
1542
1543 void statistics(struct session *se, struct statistics *stat)
1544 {
1545     struct client *cl;
1546     int count = 0;
1547
1548     memset(stat, 0, sizeof(*stat));
1549     for (cl = se->clients; cl; cl = cl->next)
1550     {
1551         if (!cl->connection)
1552             stat->num_no_connection++;
1553         switch (cl->state)
1554         {
1555             case Client_Connecting: stat->num_connecting++; break;
1556             case Client_Initializing: stat->num_initializing++; break;
1557             case Client_Searching: stat->num_searching++; break;
1558             case Client_Presenting: stat->num_presenting++; break;
1559             case Client_Idle: stat->num_idle++; break;
1560             case Client_Failed: stat->num_failed++; break;
1561             case Client_Error: stat->num_error++; break;
1562             default: break;
1563         }
1564         count++;
1565     }
1566     stat->num_hits = se->total_hits;
1567     stat->num_records = se->total_records;
1568
1569     stat->num_clients = count;
1570 }
1571
1572 static void start_http_listener(void)
1573 {
1574     char hp[128] = "";
1575     struct conf_server *ser = global_parameters.server;
1576
1577     if (*global_parameters.listener_override)
1578         strcpy(hp, global_parameters.listener_override);
1579     else
1580     {
1581         strcpy(hp, ser->host ? ser->host : "");
1582         if (ser->port)
1583         {
1584             if (*hp)
1585                 strcat(hp, ":");
1586             sprintf(hp + strlen(hp), "%d", ser->port);
1587         }
1588     }
1589     http_init(hp);
1590 }
1591
1592 static void start_proxy(void)
1593 {
1594     char hp[128] = "";
1595     struct conf_server *ser = global_parameters.server;
1596
1597     if (*global_parameters.proxy_override)
1598         strcpy(hp, global_parameters.proxy_override);
1599     else if (ser->proxy_host || ser->proxy_port)
1600     {
1601         strcpy(hp, ser->proxy_host ? ser->proxy_host : "");
1602         if (ser->proxy_port)
1603         {
1604             if (*hp)
1605                 strcat(hp, ":");
1606             sprintf(hp + strlen(hp), "%d", ser->proxy_port);
1607         }
1608     }
1609     else
1610         return;
1611
1612     http_set_proxyaddr(hp, ser->myurl ? ser->myurl : "");
1613 }
1614
1615 static void start_zproxy(void)
1616 {
1617     struct conf_server *ser = global_parameters.server;
1618
1619     if (*global_parameters.zproxy_override){
1620         yaz_log(YLOG_LOG, "Z39.50 proxy  %s",
1621                 global_parameters.zproxy_override);
1622         return;
1623     }
1624
1625     else if (ser->zproxy_host || ser->zproxy_port)
1626     {
1627         char hp[128] = "";
1628
1629         strcpy(hp, ser->zproxy_host ? ser->zproxy_host : "");
1630         if (ser->zproxy_port)
1631         {
1632             if (*hp)
1633                 strcat(hp, ":");
1634             else
1635                 strcat(hp, "@:");
1636
1637             sprintf(hp + strlen(hp), "%d", ser->zproxy_port);
1638         }
1639         strcpy(global_parameters.zproxy_override, hp);
1640         yaz_log(YLOG_LOG, "Z39.50 proxy  %s",
1641                 global_parameters.zproxy_override);
1642
1643     }
1644     else
1645         return;
1646 }
1647
1648
1649
1650 int main(int argc, char **argv)
1651 {
1652     int ret;
1653     char *arg;
1654
1655     if (signal(SIGPIPE, SIG_IGN) == SIG_ERR)
1656         yaz_log(YLOG_WARN|YLOG_ERRNO, "signal");
1657
1658     yaz_log_init(YLOG_DEFAULT_LEVEL, "pazpar2", 0);
1659
1660     while ((ret = options("t:f:x:h:p:z:s:d", argv, argc, &arg)) != -2)
1661     {
1662         switch (ret) {
1663             case 'f':
1664                 if (!read_config(arg))
1665                     exit(1);
1666                 break;
1667             case 'h':
1668                 strcpy(global_parameters.listener_override, arg);
1669                 break;
1670             case 'p':
1671                 strcpy(global_parameters.proxy_override, arg);
1672                 break;
1673             case 'z':
1674                 strcpy(global_parameters.zproxy_override, arg);
1675                 break;
1676             case 't':
1677                 strcpy(global_parameters.settings_path_override, arg);
1678                 break;
1679             case 's':
1680                 load_simpletargets(arg);
1681                 break;
1682             case 'd':
1683                 global_parameters.dump_records = 1;
1684                 break;
1685             default:
1686                 fprintf(stderr, "Usage: pazpar2\n"
1687                         "    -f configfile\n"
1688                         "    -h [host:]port          (REST protocol listener)\n"
1689                         "    -C cclconfig\n"
1690                         "    -s simpletargetfile\n"
1691                         "    -p hostname[:portno]    (HTTP proxy)\n"
1692                         "    -z hostname[:portno]    (Z39.50 proxy)\n"
1693                         "    -d                      (show internal records)\n");
1694                 exit(1);
1695         }
1696     }
1697
1698     if (!config)
1699     {
1700         yaz_log(YLOG_FATAL, "Load config with -f");
1701         exit(1);
1702     }
1703     global_parameters.server = config->servers;
1704
1705     start_http_listener();
1706     start_proxy();
1707     start_zproxy();
1708
1709     if (*global_parameters.settings_path_override)
1710         settings_read(global_parameters.settings_path_override);
1711     else if (global_parameters.server->settings)
1712         settings_read(global_parameters.server->settings);
1713     else
1714         yaz_log(YLOG_WARN, "No settings-directory specified. Problems may well ensue!");
1715     prepare_databases();
1716     global_parameters.odr_in = odr_createmem(ODR_DECODE);
1717     global_parameters.odr_out = odr_createmem(ODR_ENCODE);
1718
1719     event_loop(&channel_list);
1720
1721     return 0;
1722 }
1723
1724 /*
1725  * Local variables:
1726  * c-basic-offset: 4
1727  * indent-tabs-mode: nil
1728  * End:
1729  * vim: shiftwidth=4 tabstop=8 expandtab
1730  */