src/pazpar2.c

   1 /* $Id: pazpar2.c,v 1.32 2007-01-15 16:56:51 quinn Exp $ */
   2
   3 #include <stdlib.h>
   4 #include <stdio.h>
   5 #include <string.h>
   6 #include <sys/time.h>
   7 #include <unistd.h>
   8 #include <sys/socket.h>
   9 #include <netdb.h>
  10 #include <signal.h>
  11 #include <ctype.h>
  12 #include <assert.h>
  13
  14 #include <yaz/marcdisp.h>
  15 #include <yaz/comstack.h>
  16 #include <yaz/tcpip.h>
  17 #include <yaz/proto.h>
  18 #include <yaz/readconf.h>
  19 #include <yaz/pquery.h>
  20 #include <yaz/yaz-util.h>
  21 #include <yaz/nmem.h>
  22
  23 #if HAVE_CONFIG_H
  24 #include "cconfig.h"
  25 #endif
  26
  27 #define USE_TIMING 0
  28 #if USE_TIMING
  29 #include <yaz/timing.h>
  30 #endif
  31
  32 #include <netinet/in.h>
  33
  34 #include "pazpar2.h"
  35 #include "eventl.h"
  36 #include "http.h"
  37 #include "termlists.h"
  38 #include "reclists.h"
  39 #include "relevance.h"
  40 #include "config.h"
  41
  42 #define MAX_CHUNK 15
  43
  44 static void client_fatal(struct client *cl);
  45 static void connection_destroy(struct connection *co);
  46 static int client_prep_connection(struct client *cl);
  47 static void ingest_records(struct client *cl, Z_Records *r);
  48 static struct conf_retrievalprofile *database_retrieval_profile(struct database *db);
  49 void session_alert_watch(struct session *s, int what);
  50
  51 IOCHAN channel_list = 0;  // Master list of connections we're handling events to
  52
  53 static struct connection *connection_freelist = 0;
  54 static struct client *client_freelist = 0;
  55
  56 static struct host *hosts = 0;  // The hosts we know about
  57 static struct database *databases = 0; // The databases we know about
  58
  59 static char *client_states[] = {
  60     "Client_Connecting",
  61     "Client_Connected",
  62     "Client_Idle",
  63     "Client_Initializing",
  64     "Client_Searching",
  65     "Client_Presenting",
  66     "Client_Error",
  67     "Client_Failed",
  68     "Client_Disconnected",
  69     "Client_Stopped"
  70 };
  71
  72 // Note: Some things in this structure will eventually move to configuration
  73 struct parameters global_parameters =
  74 {
  75     "",
  76     "",
  77     0,
  78     0,
  79     30,
  80     "81",
  81     "Index Data PazPar2 (MasterKey)",
  82     VERSION,
  83     600, // 10 minutes
  84     60,
  85     100,
  86     MAX_CHUNK,
  87     0,
  88     0,
  89     0,
  90     0
  91 };
  92
  93 static int send_apdu(struct client *c, Z_APDU *a)
  94 {
  95     struct connection *co = c->connection;
  96     char *buf;
  97     int len, r;
  98
  99     if (!z_APDU(global_parameters.odr_out, &a, 0, 0))
 100     {
 101         odr_perror(global_parameters.odr_out, "Encoding APDU");
 102         abort();
 103     }
 104     buf = odr_getbuf(global_parameters.odr_out, &len, 0);
 105     r = cs_put(co->link, buf, len);
 106     if (r < 0)
 107     {
 108         yaz_log(YLOG_WARN, "cs_put: %s", cs_errmsg(cs_errno(co->link)));
 109         return -1;
 110     }
 111     else if (r == 1)
 112     {
 113         fprintf(stderr, "cs_put incomplete (ParaZ does not handle that)\n");
 114         exit(1);
 115     }
 116     odr_reset(global_parameters.odr_out); /* release the APDU structure  */
 117     co->state = Conn_Waiting;
 118     return 0;
 119 }
 120
 121
 122 static void send_init(IOCHAN i)
 123 {
 124     struct connection *co = iochan_getdata(i);
 125     struct client *cl = co->client;
 126     Z_APDU *a = zget_APDU(global_parameters.odr_out, Z_APDU_initRequest);
 127
 128     a->u.initRequest->implementationId = global_parameters.implementationId;
 129     a->u.initRequest->implementationName = global_parameters.implementationName;
 130     a->u.initRequest->implementationVersion =
 131         global_parameters.implementationVersion;
 132     ODR_MASK_SET(a->u.initRequest->options, Z_Options_search);
 133     ODR_MASK_SET(a->u.initRequest->options, Z_Options_present);
 134     ODR_MASK_SET(a->u.initRequest->options, Z_Options_namedResultSets);
 135
 136     ODR_MASK_SET(a->u.initRequest->protocolVersion, Z_ProtocolVersion_1);
 137     ODR_MASK_SET(a->u.initRequest->protocolVersion, Z_ProtocolVersion_2);
 138     ODR_MASK_SET(a->u.initRequest->protocolVersion, Z_ProtocolVersion_3);
 139     if (send_apdu(cl, a) >= 0)
 140     {
 141         iochan_setflags(i, EVENT_INPUT);
 142         cl->state = Client_Initializing;
 143     }
 144     else
 145         cl->state = Client_Error;
 146     odr_reset(global_parameters.odr_out);
 147 }
 148
 149 static void send_search(IOCHAN i)
 150 {
 151     struct connection *co = iochan_getdata(i);
 152     struct client *cl = co->client;
 153     struct session *se = cl->session;
 154     struct database *db = cl->database;
 155     Z_APDU *a = zget_APDU(global_parameters.odr_out, Z_APDU_searchRequest);
 156     int ndb, cerror, cpos;
 157     char **databaselist;
 158     Z_Query *zquery;
 159     struct ccl_rpn_node *cn;
 160     int ssub = 0, lslb = 100000, mspn = 10;
 161
 162     yaz_log(YLOG_DEBUG, "Sending search");
 163
 164     cn = ccl_find_str(global_parameters.ccl_filter, se->query, &cerror, &cpos);
 165     if (!cn)
 166         return;
 167     a->u.searchRequest->query = zquery = odr_malloc(global_parameters.odr_out,
 168             sizeof(Z_Query));
 169     zquery->which = Z_Query_type_1;
 170     zquery->u.type_1 = ccl_rpn_query(global_parameters.odr_out, cn);
 171     ccl_rpn_delete(cn);
 172
 173     for (ndb = 0; db->databases[ndb]; ndb++)
 174         ;
 175     databaselist = odr_malloc(global_parameters.odr_out, sizeof(char*) * ndb);
 176     for (ndb = 0; db->databases[ndb]; ndb++)
 177         databaselist[ndb] = db->databases[ndb];
 178
 179     a->u.presentRequest->preferredRecordSyntax =
 180             yaz_oidval_to_z3950oid(global_parameters.odr_out,
 181             CLASS_RECSYN, VAL_USMARC);
 182     a->u.searchRequest->smallSetUpperBound = &ssub;
 183     a->u.searchRequest->largeSetLowerBound = &lslb;
 184     a->u.searchRequest->mediumSetPresentNumber = &mspn;
 185     a->u.searchRequest->resultSetName = "Default";
 186     a->u.searchRequest->databaseNames = databaselist;
 187     a->u.searchRequest->num_databaseNames = ndb;
 188
 189     if (send_apdu(cl, a) >= 0)
 190     {
 191         iochan_setflags(i, EVENT_INPUT);
 192         cl->state = Client_Searching;
 193         cl->requestid = se->requestid;
 194     }
 195     else
 196         cl->state = Client_Error;
 197
 198     odr_reset(global_parameters.odr_out);
 199 }
 200
 201 static void send_present(IOCHAN i)
 202 {
 203     struct connection *co = iochan_getdata(i);
 204     struct client *cl = co->client;
 205     Z_APDU *a = zget_APDU(global_parameters.odr_out, Z_APDU_presentRequest);
 206     int toget;
 207     int start = cl->records + 1;
 208
 209     toget = global_parameters.chunk;
 210     if (toget > global_parameters.toget - cl->records)
 211         toget = global_parameters.toget - cl->records;
 212     if (toget > cl->hits - cl->records)
 213         toget = cl->hits - cl->records;
 214
 215     yaz_log(YLOG_DEBUG, "Trying to present %d records\n", toget);
 216
 217     a->u.presentRequest->resultSetStartPoint = &start;
 218     a->u.presentRequest->numberOfRecordsRequested = &toget;
 219
 220     a->u.presentRequest->resultSetId = "Default";
 221
 222     a->u.presentRequest->preferredRecordSyntax =
 223             yaz_oidval_to_z3950oid(global_parameters.odr_out,
 224             CLASS_RECSYN, VAL_USMARC);
 225
 226     if (send_apdu(cl, a) >= 0)
 227     {
 228         iochan_setflags(i, EVENT_INPUT);
 229         cl->state = Client_Presenting;
 230     }
 231     else
 232         cl->state = Client_Error;
 233     odr_reset(global_parameters.odr_out);
 234 }
 235
 236 static void do_initResponse(IOCHAN i, Z_APDU *a)
 237 {
 238     struct connection *co = iochan_getdata(i);
 239     struct client *cl = co->client;
 240     Z_InitResponse *r = a->u.initResponse;
 241
 242     yaz_log(YLOG_DEBUG, "Received init response");
 243
 244     if (*r->result)
 245     {
 246         cl->state = Client_Idle;
 247     }
 248     else
 249         cl->state = Client_Failed; // FIXME need to do something to the connection
 250 }
 251
 252 static void do_searchResponse(IOCHAN i, Z_APDU *a)
 253 {
 254     struct connection *co = iochan_getdata(i);
 255     struct client *cl = co->client;
 256     struct session *se = cl->session;
 257     Z_SearchResponse *r = a->u.searchResponse;
 258
 259     yaz_log(YLOG_DEBUG, "Searchresponse (status=%d)", *r->searchStatus);
 260
 261     if (*r->searchStatus)
 262     {
 263         cl->hits = *r->resultCount;
 264         se->total_hits += cl->hits;
 265         if (r->presentStatus && !*r->presentStatus && r->records)
 266         {
 267             yaz_log(YLOG_DEBUG, "Records in search response");
 268             cl->records += *r->numberOfRecordsReturned;
 269             ingest_records(cl, r->records);
 270         }
 271         cl->state = Client_Idle;
 272     }
 273     else
 274     {          /*"FAILED"*/
 275         cl->hits = 0;
 276         cl->state = Client_Error;
 277         if (r->records) {
 278             Z_Records *recs = r->records;
 279             if (recs->which == Z_Records_NSD)
 280             {
 281                 yaz_log(YLOG_WARN, "Non-surrogate diagnostic");
 282                 cl->diagnostic = *recs->u.nonSurrogateDiagnostic->condition;
 283                 cl->state = Client_Error;
 284             }
 285         }
 286     }
 287 }
 288
 289 char *normalize_mergekey(char *buf, int skiparticle)
 290 {
 291     char *p = buf, *pout = buf;
 292
 293     if (skiparticle)
 294     {
 295         char firstword[64];
 296         char articles[] = "the den der die des an a "; // must end in space
 297
 298         while (*p && !isalnum(*p))
 299             p++;
 300         pout = firstword;
 301         while (*p && *p != ' ' && pout - firstword < 62)
 302             *(pout++) = tolower(*(p++));
 303         *(pout++) = ' ';
 304         *(pout++) = '\0';
 305         if (!strstr(articles, firstword))
 306             p = buf;
 307         pout = buf;
 308     }
 309
 310     while (*p)
 311     {
 312         while (*p && !isalnum(*p))
 313             p++;
 314         while (isalnum(*p))
 315             *(pout++) = tolower(*(p++));
 316         if (*p)
 317             *(pout++) = ' ';
 318         while (*p && !isalnum(*p))
 319             p++;
 320     }
 321     if (buf != pout)
 322         *pout = '\0';
 323
 324     return buf;
 325 }
 326
 327
 328 #ifdef GAGA
 329 // FIXME needs to be generalized. Should flexibly generate X lists per search
 330 static void extract_subject(struct session *s, const char *rec)
 331 {
 332     const char *field, *subfield;
 333
 334     while ((field = find_field(rec, "650")))
 335     {
 336         rec = field;
 337         if ((subfield = find_subfield(field, 'a')))
 338         {
 339             char *e, *ef;
 340             char buf[1024];
 341             int len;
 342
 343             ef = index(subfield, '\n');
 344             if (!ef)
 345                 return;
 346             if ((e = index(subfield, '\t')) && e < ef)
 347                 ef = e;
 348             while (ef > subfield && !isalpha(*(ef - 1)) && *(ef - 1) != ')')
 349                 ef--;
 350             len = ef - subfield;
 351             assert(len < 1023);
 352             memcpy(buf, subfield, len);
 353             buf[len] = '\0';
 354 #ifdef FIXME
 355             if (*buf)
 356                 termlist_insert(s->termlist, buf);
 357 #endif
 358         }
 359     }
 360 }
 361 #endif
 362
 363 static void add_facet(struct session *s, const char *type, const char *value)
 364 {
 365     int i;
 366
 367     if (!*value)
 368         return;
 369     for (i = 0; i < s->num_termlists; i++)
 370         if (!strcmp(s->termlists[i].name, type))
 371             break;
 372     if (i == s->num_termlists)
 373     {
 374         if (i == SESSION_MAX_TERMLISTS)
 375         {
 376             yaz_log(YLOG_FATAL, "Too many termlists");
 377             exit(1);
 378         }
 379         s->termlists[i].name = nmem_strdup(s->nmem, type);
 380         s->termlists[i].termlist = termlist_create(s->nmem, s->expected_maxrecs, 15);
 381         s->num_termlists = i + 1;
 382     }
 383     termlist_insert(s->termlists[i].termlist, value);
 384 }
 385
 386 int yaz_marc_write_xml();
 387
 388 static xmlDoc *normalize_record(struct client *cl, Z_External *rec)
 389 {
 390     struct conf_retrievalprofile *rprofile = cl->database->rprofile;
 391     struct conf_retrievalmap *m;
 392     xmlNode *res;
 393     xmlDoc *rdoc;
 394
 395     // First normalize to XML
 396     if (rprofile->native_syntax == Nativesyn_iso2709)
 397     {
 398         char *buf;
 399         int len;
 400         if (rec->which != Z_External_octet)
 401         {
 402             yaz_log(YLOG_WARN, "Unexpected external branch, probably BER");
 403             return 0;
 404         }
 405         buf = (char*) rec->u.octet_aligned->buf;
 406         len = rec->u.octet_aligned->len;
 407         if (yaz_marc_read_iso2709(rprofile->yaz_marc, buf, len) < 0)
 408         {
 409             yaz_log(YLOG_WARN, "Failed to decode MARC");
 410             return 0;
 411         }
 412         if (yaz_marc_write_xml(rprofile->yaz_marc, &res,
 413                     "http://www.loc.gov/MARC21/slim", 0, 0) < 0)
 414         {
 415             yaz_log(YLOG_WARN, "Failed to encode as XML");
 416             return 0;
 417         }
 418         rdoc = xmlNewDoc("1.0");
 419         xmlDocSetRootElement(rdoc, res);
 420     }
 421     else
 422     {
 423         yaz_log(YLOG_FATAL, "Unknown native_syntax in normalize_record");
 424         exit(1);
 425     }
 426     for (m = rprofile->maplist; m; m = m->next)
 427     {
 428         xmlDoc *new;
 429         if (m->type != Map_xslt)
 430         {
 431             yaz_log(YLOG_WARN, "Unknown map type");
 432             return 0;
 433         }
 434         if (!(new = xsltApplyStylesheet(m->stylesheet, rdoc, 0)))
 435         {
 436             yaz_log(YLOG_WARN, "XSLT transformation failed");
 437             return 0;
 438         }
 439         xmlFreeDoc(rdoc);
 440         rdoc = new;
 441     }
 442     if (global_parameters.dump_records)
 443     {
 444         fprintf(stderr, "Record:\n----------------\n");
 445 #if LIBXML_VERSION >= 20600
 446         xmlDocFormatDump(stderr, rdoc, 1);
 447 #else
 448         xmlDocDump(stderr, rdoc);
 449 #endif
 450     }
 451     return rdoc;
 452 }
 453
 454 // Extract what appears to be years from buf, storing highest and
 455 // lowest values.
 456 static int extract_years(const char *buf, int *first, int *last)
 457 {
 458     *first = -1;
 459     *last = -1;
 460     while (*buf)
 461     {
 462         const char *e;
 463         int len;
 464
 465         while (*buf && !isdigit(*buf))
 466             buf++;
 467         len = 0;
 468         for (e = buf; *e && isdigit(*e); e++)
 469             len++;
 470         if (len == 4)
 471         {
 472             int value = atoi(buf);
 473             if (*first < 0 || value < *first)
 474                 *first = value;
 475             if (*last < 0 || value > *last)
 476                 *last = value;
 477         }
 478         buf = e;
 479     }
 480     return *first;
 481 }
 482
 483 static struct record *ingest_record(struct client *cl, Z_External *rec)
 484 {
 485     xmlDoc *xdoc = normalize_record(cl, rec);
 486     xmlNode *root, *n;
 487     struct record *res;
 488     struct record_cluster *cluster;
 489     struct session *se = cl->session;
 490     xmlChar *mergekey, *mergekey_norm;
 491     xmlChar *type;
 492     xmlChar *value;
 493     struct conf_service *service = global_parameters.server->service;
 494
 495     if (!xdoc)
 496         return 0;
 497
 498     root = xmlDocGetRootElement(xdoc);
 499     if (!(mergekey = xmlGetProp(root, "mergekey")))
 500     {
 501         yaz_log(YLOG_WARN, "No mergekey found in record");
 502         xmlFreeDoc(xdoc);
 503         return 0;
 504     }
 505
 506     res = nmem_malloc(se->nmem, sizeof(struct record));
 507     res->next = 0;
 508     res->metadata = nmem_malloc(se->nmem,
 509             sizeof(struct record_metadata*) * service->num_metadata);
 510     memset(res->metadata, 0, sizeof(struct record_metadata*) * service->num_metadata);
 511
 512     mergekey_norm = nmem_strdup(se->nmem, (char*) mergekey);
 513     xmlFree(mergekey);
 514     normalize_mergekey(mergekey_norm, 0);
 515
 516     cluster = reclist_insert(se->reclist, res, mergekey_norm, &se->total_merged);
 517     if (!cluster)
 518     {
 519         /* no room for record */
 520         xmlFreeDoc(xdoc);
 521         return 0;
 522     }
 523     relevance_newrec(se->relevance, cluster);
 524
 525     type = value = 0;
 526     for (n = root->children; n; n = n->next)
 527     {
 528         if (type)
 529             xmlFree(type);
 530         if (value)
 531             xmlFree(value);
 532         type = value = 0;
 533
 534         if (n->type != XML_ELEMENT_NODE)
 535             continue;
 536         if (!strcmp(n->name, "metadata"))
 537         {
 538             struct conf_metadata *md = 0;
 539             struct conf_sortkey *sk = 0;
 540             struct record_metadata **wheretoput, *newm;
 541             int imeta;
 542             int first, last;
 543
 544             type = xmlGetProp(n, "type");
 545             value = xmlNodeListGetString(xdoc, n->children, 0);
 546             // First, find out what field we're looking at
 547             for (imeta = 0; imeta < service->num_metadata; imeta++)
 548                 if (!strcmp(type, service->metadata[imeta].name))
 549                 {
 550                     md = &service->metadata[imeta];
 551                     if (md->sortkey_offset >= 0)
 552                         sk = &service->sortkeys[md->sortkey_offset];
 553                     break;
 554                 }
 555             if (!md)
 556             {
 557                 yaz_log(YLOG_WARN, "Ignoring unknown metadata element: %s", type);
 558                 continue;
 559             }
 560
 561             // Find out where we are putting it
 562             if (md->merge == Metadata_merge_no)
 563                 wheretoput = &res->metadata[imeta];
 564             else
 565                 wheretoput = &cluster->metadata[imeta];
 566
 567             // Put it there
 568             newm = nmem_malloc(se->nmem, sizeof(struct record_metadata));
 569             newm->next = 0;
 570             if (md->type == Metadata_type_generic)
 571             {
 572                 newm->data.text = nmem_strdup(se->nmem, value);
 573             }
 574             else if (md->type == Metadata_type_year)
 575             {
 576                 if (extract_years(value, &first, &last) < 0)
 577                     continue;
 578             }
 579             else
 580             {
 581                 yaz_log(YLOG_WARN, "Unknown type in metadata element %s", type);
 582                 continue;
 583             }
 584             if (md->type == Metadata_type_year && md->merge != Metadata_merge_range)
 585             {
 586                 yaz_log(YLOG_WARN, "Only range merging supported for years");
 587                 continue;
 588             }
 589             if (md->merge == Metadata_merge_unique)
 590             {
 591                 struct record_metadata *mnode;
 592                 for (mnode = *wheretoput; mnode; mnode = mnode->next)
 593                     if (!strcmp(mnode->data.text, mnode->data.text))
 594                         break;
 595                 if (!mnode)
 596                 {
 597                     newm->next = *wheretoput;
 598                     *wheretoput = newm;
 599                 }
 600             }
 601             else if (md->merge == Metadata_merge_longest)
 602             {
 603                 if (!*wheretoput ||
 604                         strlen(newm->data.text) > strlen((*wheretoput)->data.text))
 605                 {
 606                     *wheretoput = newm;
 607                     if (sk)
 608                     {
 609                         char *s = nmem_strdup(se->nmem, newm->data.text);
 610                         if (!cluster->sortkeys[md->sortkey_offset])
 611                             cluster->sortkeys[md->sortkey_offset] =
 612                                 nmem_malloc(se->nmem, sizeof(union data_types));
 613                         normalize_mergekey(s,
 614                                 (sk->type == Metadata_sortkey_skiparticle));
 615                         cluster->sortkeys[md->sortkey_offset]->text = s;
 616                     }
 617                 }
 618             }
 619             else if (md->merge == Metadata_merge_all || md->merge == Metadata_merge_no)
 620             {
 621                 newm->next = *wheretoput;
 622                 *wheretoput = newm;
 623             }
 624             else if (md->merge == Metadata_merge_range)
 625             {
 626                 assert(md->type == Metadata_type_year);
 627                 if (!*wheretoput)
 628                 {
 629                     *wheretoput = newm;
 630                     (*wheretoput)->data.number.min = first;
 631                     (*wheretoput)->data.number.max = last;
 632                     if (sk)
 633                         cluster->sortkeys[md->sortkey_offset] = &newm->data;
 634                 }
 635                 else
 636                 {
 637                     if (first < (*wheretoput)->data.number.min)
 638                         (*wheretoput)->data.number.min = first;
 639                     if (last > (*wheretoput)->data.number.max)
 640                         (*wheretoput)->data.number.max = last;
 641                     if (sk)
 642                     {
 643                         union data_types *sdata = cluster->sortkeys[md->sortkey_offset];
 644                         sdata->number.min = first;
 645                         sdata->number.max = last;
 646                     }
 647                 }
 648 #ifdef GAGA
 649                 if (sk)
 650                 {
 651                     union data_types *sdata = cluster->sortkeys[md->sortkey_offset];
 652                     yaz_log(YLOG_LOG, "SK range: %d-%d", sdata->number.min, sdata->number.max);
 653                 }
 654 #endif
 655             }
 656             else
 657                 yaz_log(YLOG_WARN, "Don't know how to merge on element name %s", md->name);
 658
 659             if (md->rank)
 660                 relevance_countwords(se->relevance, cluster, value, md->rank);
 661             if (md->termlist)
 662                 add_facet(se, type, value);
 663             xmlFree(type);
 664             xmlFree(value);
 665             type = value = 0;
 666         }
 667         else
 668             yaz_log(YLOG_WARN, "Unexpected element %s in internal record", n->name);
 669     }
 670
 671     xmlFreeDoc(xdoc);
 672
 673     relevance_donerecord(se->relevance, cluster);
 674     se->total_records++;
 675
 676     return res;
 677 }
 678
 679 static void ingest_records(struct client *cl, Z_Records *r)
 680 {
 681 #if USE_TIMING
 682     yaz_timing_t t = yaz_timing_create();
 683 #endif
 684     struct record *rec;
 685     struct session *s = cl->session;
 686     Z_NamePlusRecordList *rlist;
 687     int i;
 688
 689     if (r->which != Z_Records_DBOSD)
 690         return;
 691     rlist = r->u.databaseOrSurDiagnostics;
 692     for (i = 0; i < rlist->num_records; i++)
 693     {
 694         Z_NamePlusRecord *npr = rlist->records[i];
 695
 696         if (npr->which != Z_NamePlusRecord_databaseRecord)
 697         {
 698             yaz_log(YLOG_WARN, "Unexpected record type, probably diagnostic");
 699             continue;
 700         }
 701
 702         rec = ingest_record(cl, npr->u.databaseRecord);
 703         if (!rec)
 704             continue;
 705     }
 706     if (s->watchlist[SESSION_WATCH_RECORDS].fun && rlist->num_records)
 707         session_alert_watch(s, SESSION_WATCH_RECORDS);
 708
 709 #if USE_TIMING
 710     yaz_timing_stop(t);
 711     yaz_log(YLOG_LOG, "ingest_records %6.5f %3.2f %3.2f",
 712             yaz_timing_get_real(t), yaz_timing_get_user(t),
 713             yaz_timing_get_sys(t));
 714     yaz_timing_destroy(&t);
 715 #endif
 716 }
 717
 718 static void do_presentResponse(IOCHAN i, Z_APDU *a)
 719 {
 720     struct connection *co = iochan_getdata(i);
 721     struct client *cl = co->client;
 722     Z_PresentResponse *r = a->u.presentResponse;
 723
 724     if (r->records) {
 725         Z_Records *recs = r->records;
 726         if (recs->which == Z_Records_NSD)
 727         {
 728             yaz_log(YLOG_WARN, "Non-surrogate diagnostic");
 729             cl->diagnostic = *recs->u.nonSurrogateDiagnostic->condition;
 730             cl->state = Client_Error;
 731         }
 732     }
 733
 734     if (!*r->presentStatus && cl->state != Client_Error)
 735     {
 736         yaz_log(YLOG_DEBUG, "Good Present response");
 737         cl->records += *r->numberOfRecordsReturned;
 738         ingest_records(cl, r->records);
 739         cl->state = Client_Idle;
 740     }
 741     else if (*r->presentStatus)
 742     {
 743         yaz_log(YLOG_WARN, "Bad Present response");
 744         cl->state = Client_Error;
 745     }
 746 }
 747
 748 static void handler(IOCHAN i, int event)
 749 {
 750     struct connection *co = iochan_getdata(i);
 751     struct client *cl = co->client;
 752     struct session *se = 0;
 753
 754     if (cl)
 755         se = cl->session;
 756     else
 757     {
 758         yaz_log(YLOG_WARN, "Destroying orphan connection");
 759         connection_destroy(co);
 760         return;
 761     }
 762
 763     if (co->state == Conn_Connecting && event & EVENT_OUTPUT)
 764     {
 765         int errcode;
 766         socklen_t errlen = sizeof(errcode);
 767
 768         if (getsockopt(cs_fileno(co->link), SOL_SOCKET, SO_ERROR, &errcode,
 769             &errlen) < 0 || errcode != 0)
 770         {
 771             client_fatal(cl);
 772             return;
 773         }
 774         else
 775         {
 776             yaz_log(YLOG_DEBUG, "Connect OK");
 777             co->state = Conn_Open;
 778             if (cl)
 779                 cl->state = Client_Connected;
 780         }
 781     }
 782
 783     else if (event & EVENT_INPUT)
 784     {
 785         int len = cs_get(co->link, &co->ibuf, &co->ibufsize);
 786
 787         if (len < 0)
 788         {
 789             yaz_log(YLOG_WARN|YLOG_ERRNO, "Error reading from Z server");
 790             connection_destroy(co);
 791             return;
 792         }
 793         else if (len == 0)
 794         {
 795             yaz_log(YLOG_WARN, "EOF reading from Z server");
 796             connection_destroy(co);
 797             return;
 798         }
 799         else if (len > 1) // We discard input if we have no connection
 800         {
 801             co->state = Conn_Open;
 802
 803             if (cl && (cl->requestid == se->requestid || cl->state == Client_Initializing))
 804             {
 805                 Z_APDU *a;
 806
 807                 odr_reset(global_parameters.odr_in);
 808                 odr_setbuf(global_parameters.odr_in, co->ibuf, len, 0);
 809                 if (!z_APDU(global_parameters.odr_in, &a, 0, 0))
 810                 {
 811                     client_fatal(cl);
 812                     return;
 813                 }
 814                 switch (a->which)
 815                 {
 816                     case Z_APDU_initResponse:
 817                         do_initResponse(i, a);
 818                         break;
 819                     case Z_APDU_searchResponse:
 820                         do_searchResponse(i, a);
 821                         break;
 822                     case Z_APDU_presentResponse:
 823                         do_presentResponse(i, a);
 824                         break;
 825                     default:
 826                         yaz_log(YLOG_WARN, "Unexpected result from server");
 827                         client_fatal(cl);
 828                         return;
 829                 }
 830                 // We aren't expecting staggered output from target
 831                 // if (cs_more(t->link))
 832                 //    iochan_setevent(i, EVENT_INPUT);
 833             }
 834             else  // we throw away response and go to idle mode
 835             {
 836                 yaz_log(YLOG_DEBUG, "Ignoring result of expired operation");
 837                 cl->state = Client_Idle;
 838             }
 839         }
 840         /* if len==1 we do nothing but wait for more input */
 841     }
 842
 843     if (cl->state == Client_Connected) {
 844         send_init(i);
 845     }
 846
 847     if (cl->state == Client_Idle)
 848     {
 849         if (cl->requestid != se->requestid && *se->query) {
 850             send_search(i);
 851         }
 852         else if (cl->hits > 0 && cl->records < global_parameters.toget &&
 853             cl->records < cl->hits) {
 854             send_present(i);
 855         }
 856     }
 857 }
 858
 859 // Disassociate connection from client
 860 static void connection_release(struct connection *co)
 861 {
 862     struct client *cl = co->client;
 863
 864     yaz_log(YLOG_DEBUG, "Connection release %s", co->host->hostport);
 865     if (!cl)
 866         return;
 867     cl->connection = 0;
 868     co->client = 0;
 869 }
 870
 871 // Close connection and recycle structure
 872 static void connection_destroy(struct connection *co)
 873 {
 874     struct host *h = co->host;
 875     cs_close(co->link);
 876     iochan_destroy(co->iochan);
 877
 878     yaz_log(YLOG_DEBUG, "Connection destroy %s", co->host->hostport);
 879     if (h->connections == co)
 880         h->connections = co->next;
 881     else
 882     {
 883         struct connection *pco;
 884         for (pco = h->connections; pco && pco->next != co; pco = pco->next)
 885             ;
 886         if (pco)
 887             pco->next = co->next;
 888         else
 889             abort();
 890     }
 891     if (co->client)
 892     {
 893         if (co->client->state != Client_Idle)
 894             co->client->state = Client_Disconnected;
 895         co->client->connection = 0;
 896     }
 897     co->next = connection_freelist;
 898     connection_freelist = co;
 899 }
 900
 901 // Creates a new connection for client, associated with the host of
 902 // client's database
 903 static struct connection *connection_create(struct client *cl)
 904 {
 905     struct connection *new;
 906     COMSTACK link;
 907     int res;
 908     void *addr;
 909
 910     yaz_log(YLOG_DEBUG, "Connection create %s", cl->database->url);
 911     if (!(link = cs_create(tcpip_type, 0, PROTO_Z3950)))
 912     {
 913         yaz_log(YLOG_FATAL|YLOG_ERRNO, "Failed to create comstack");
 914         exit(1);
 915     }
 916
 917     if (!(addr = cs_straddr(link, cl->database->host->ipport)))
 918     {
 919         yaz_log(YLOG_WARN|YLOG_ERRNO, "Lookup of IP address %s failed?",
 920             cl->database->host->ipport);
 921         return 0;
 922     }
 923
 924     res = cs_connect(link, addr);
 925     if (res < 0)
 926     {
 927         yaz_log(YLOG_WARN|YLOG_ERRNO, "cs_connect %s", cl->database->url);
 928         return 0;
 929     }
 930
 931     if ((new = connection_freelist))
 932         connection_freelist = new->next;
 933     else
 934     {
 935         new = xmalloc(sizeof (struct connection));
 936         new->ibuf = 0;
 937         new->ibufsize = 0;
 938     }
 939     new->state = Conn_Connecting;
 940     new->host = cl->database->host;
 941     new->next = new->host->connections;
 942     new->host->connections = new;
 943     new->client = cl;
 944     cl->connection = new;
 945     new->link = link;
 946
 947     new->iochan = iochan_create(cs_fileno(link), handler, 0);
 948     iochan_setdata(new->iochan, new);
 949     new->iochan->next = channel_list;
 950     channel_list = new->iochan;
 951     return new;
 952 }
 953
 954 // Close connection and set state to error
 955 static void client_fatal(struct client *cl)
 956 {
 957     yaz_log(YLOG_WARN, "Fatal error from %s", cl->database->url);
 958     connection_destroy(cl->connection);
 959     cl->state = Client_Error;
 960 }
 961
 962 // Ensure that client has a connection associated
 963 static int client_prep_connection(struct client *cl)
 964 {
 965     struct connection *co;
 966     struct session *se = cl->session;
 967     struct host *host = cl->database->host;
 968
 969     co = cl->connection;
 970
 971     yaz_log(YLOG_DEBUG, "Client prep %s", cl->database->url);
 972
 973     if (!co)
 974     {
 975         // See if someone else has an idle connection
 976         // We should look at timestamps here to select the longest-idle connection
 977         for (co = host->connections; co; co = co->next)
 978             if (co->state == Conn_Open && (!co->client || co->client->session != se))
 979                 break;
 980         if (co)
 981         {
 982             connection_release(co);
 983             cl->connection = co;
 984             co->client = cl;
 985         }
 986         else
 987             co = connection_create(cl);
 988     }
 989     if (co)
 990     {
 991         if (co->state == Conn_Connecting)
 992         {
 993             cl->state = Client_Connecting;
 994             iochan_setflag(co->iochan, EVENT_OUTPUT);
 995         }
 996         else if (co->state == Conn_Open)
 997         {
 998             if (cl->state == Client_Error || cl->state == Client_Disconnected)
 999                 cl->state = Client_Idle;
1000             iochan_setflag(co->iochan, EVENT_OUTPUT);
1001         }
1002         return 1;
1003     }
1004     else
1005         return 0;
1006 }
1007
1008 // This function will most likely vanish when a proper target profile mechanism is
1009 // introduced.
1010 void load_simpletargets(const char *fn)
1011 {
1012     FILE *f = fopen(fn, "r");
1013     char line[256];
1014
1015     if (!f)
1016     {
1017         yaz_log(YLOG_WARN|YLOG_ERRNO, "open %s", fn);
1018         exit(1);
1019     }
1020
1021     while (fgets(line, 255, f))
1022     {
1023         char *url, *db;
1024         struct host *host;
1025         struct database *database;
1026
1027         if (strncmp(line, "target ", 7))
1028             continue;
1029         url = line + 7;
1030         url[strlen(url) - 1] = '\0';
1031         yaz_log(YLOG_DEBUG, "Target: %s", url);
1032         if ((db = strchr(url, '/')))
1033             *(db++) = '\0';
1034         else
1035             db = "Default";
1036
1037         for (host = hosts; host; host = host->next)
1038             if (!strcmp(url, host->hostport))
1039                 break;
1040         if (!host)
1041         {
1042             struct addrinfo *addrinfo, hints;
1043             char *port;
1044             char ipport[128];
1045             unsigned char addrbuf[4];
1046             int res;
1047
1048             host = xmalloc(sizeof(struct host));
1049             host->hostport = xstrdup(url);
1050             host->connections = 0;
1051
1052             if ((port = strchr(url, ':')))
1053                 *(port++) = '\0';
1054             else
1055                 port = "210";
1056
1057             hints.ai_flags = 0;
1058             hints.ai_family = PF_INET;
1059             hints.ai_socktype = SOCK_STREAM;
1060             hints.ai_protocol = IPPROTO_TCP;
1061             hints.ai_addrlen = 0;
1062             hints.ai_addr = 0;
1063             hints.ai_canonname = 0;
1064             hints.ai_next = 0;
1065             // This is not robust code. It assumes that getaddrinfo returns AF_INET
1066             // address.
1067             if ((res = getaddrinfo(url, port, &hints, &addrinfo)))
1068             {
1069                 yaz_log(YLOG_WARN, "Failed to resolve %s: %s", url, gai_strerror(res));
1070                 xfree(host->hostport);
1071                 xfree(host);
1072                 continue;
1073             }
1074             assert(addrinfo->ai_family == PF_INET);
1075             memcpy(addrbuf, &((struct sockaddr_in*)addrinfo->ai_addr)->sin_addr.s_addr, 4);
1076             sprintf(ipport, "%u.%u.%u.%u:%s",
1077                     addrbuf[0], addrbuf[1], addrbuf[2], addrbuf[3], port);
1078             host->ipport = xstrdup(ipport);
1079             freeaddrinfo(addrinfo);
1080             host->next = hosts;
1081             hosts = host;
1082         }
1083         database = xmalloc(sizeof(struct database));
1084         database->host = host;
1085         database->url = xmalloc(strlen(url) + strlen(db) + 2);
1086         strcpy(database->url, url);
1087         strcat(database->url, "/");
1088         strcat(database->url, db);
1089
1090         database->databases = xmalloc(2 * sizeof(char *));
1091         database->databases[0] = xstrdup(db);
1092         database->databases[1] = 0;
1093         database->errors = 0;
1094         database->qprofile = 0;
1095         database->rprofile = database_retrieval_profile(database);
1096         database->next = databases;
1097         databases = database;
1098
1099     }
1100     fclose(f);
1101 }
1102
1103 static void pull_terms(NMEM nmem, struct ccl_rpn_node *n, char **termlist, int *num)
1104 {
1105     switch (n->kind)
1106     {
1107         case CCL_RPN_AND:
1108         case CCL_RPN_OR:
1109         case CCL_RPN_NOT:
1110         case CCL_RPN_PROX:
1111             pull_terms(nmem, n->u.p[0], termlist, num);
1112             pull_terms(nmem, n->u.p[1], termlist, num);
1113             break;
1114         case CCL_RPN_TERM:
1115             termlist[(*num)++] = nmem_strdup(nmem, n->u.t.term);
1116             break;
1117         default: // NOOP
1118             break;
1119     }
1120 }
1121
1122 // Extract terms from query into null-terminated termlist
1123 static int extract_terms(NMEM nmem, char *query, char **termlist)
1124 {
1125     int error, pos;
1126     struct ccl_rpn_node *n;
1127     int num = 0;
1128
1129     n = ccl_find_str(global_parameters.ccl_filter, query, &error, &pos);
1130     if (!n)
1131         return -1;
1132     pull_terms(nmem, n, termlist, &num);
1133     termlist[num] = 0;
1134     ccl_rpn_delete(n);
1135     return 0;
1136 }
1137
1138 static struct client *client_create(void)
1139 {
1140     struct client *r;
1141     if (client_freelist)
1142     {
1143         r = client_freelist;
1144         client_freelist = client_freelist->next;
1145     }
1146     else
1147         r = xmalloc(sizeof(struct client));
1148     r->database = 0;
1149     r->connection = 0;
1150     r->session = 0;
1151     r->hits = 0;
1152     r->records = 0;
1153     r->setno = 0;
1154     r->requestid = -1;
1155     r->diagnostic = 0;
1156     r->state = Client_Disconnected;
1157     r->next = 0;
1158     return r;
1159 }
1160
1161 void client_destroy(struct client *c)
1162 {
1163     struct session *se = c->session;
1164     if (c == se->clients)
1165         se->clients = c->next;
1166     else
1167     {
1168         struct client *cc;
1169         for (cc = se->clients; cc && cc->next != c; cc = cc->next)
1170             ;
1171         if (cc)
1172             cc->next = c->next;
1173     }
1174     if (c->connection)
1175         connection_release(c->connection);
1176     c->next = client_freelist;
1177     client_freelist = c;
1178 }
1179
1180 void session_set_watch(struct session *s, int what, session_watchfun fun, void *data)
1181 {
1182     s->watchlist[what].fun = fun;
1183     s->watchlist[what].data = data;
1184 }
1185
1186 void session_alert_watch(struct session *s, int what)
1187 {
1188     if (!s->watchlist[what].fun)
1189         return;
1190     (*s->watchlist[what].fun)(s->watchlist[what].data);
1191     s->watchlist[what].fun = 0;
1192     s->watchlist[what].data = 0;
1193 }
1194
1195 // This needs to be extended with selection criteria
1196 static struct conf_retrievalprofile *database_retrieval_profile(struct database *db)
1197 {
1198     if (!config)
1199     {
1200         yaz_log(YLOG_FATAL, "Must load configuration (-f)");
1201         exit(1);
1202     }
1203     if (!config->retrievalprofiles)
1204     {
1205         yaz_log(YLOG_FATAL, "No retrieval profiles defined");
1206     }
1207     return config->retrievalprofiles;
1208 }
1209
1210 // This should be extended with parameters to control selection criteria
1211 // Associates a set of clients with a session;
1212 int select_targets(struct session *se)
1213 {
1214     struct database *db;
1215     int c = 0;
1216
1217     while (se->clients)
1218         client_destroy(se->clients);
1219     for (db = databases; db; db = db->next)
1220     {
1221         struct client *cl = client_create();
1222         cl->database = db;
1223         cl->session = se;
1224         cl->next = se->clients;
1225         se->clients = cl;
1226         c++;
1227     }
1228     return c;
1229 }
1230
1231 int session_active_clients(struct session *s)
1232 {
1233     struct client *c;
1234     int res = 0;
1235
1236     for (c = s->clients; c; c = c->next)
1237         if (c->connection && (c->state == Client_Connecting ||
1238                     c->state == Client_Initializing ||
1239                     c->state == Client_Searching ||
1240                     c->state == Client_Presenting))
1241             res++;
1242
1243     return res;
1244 }
1245
1246 char *search(struct session *se, char *query)
1247 {
1248     int live_channels = 0;
1249     struct client *cl;
1250
1251     yaz_log(YLOG_DEBUG, "Search");
1252
1253     strcpy(se->query, query);
1254     se->requestid++;
1255     nmem_reset(se->nmem);
1256     for (cl = se->clients; cl; cl = cl->next)
1257     {
1258         cl->hits = -1;
1259         cl->records = 0;
1260         cl->diagnostic = 0;
1261
1262         if (client_prep_connection(cl))
1263             live_channels++;
1264     }
1265     if (live_channels)
1266     {
1267         char *p[512];
1268         int maxrecs = live_channels * global_parameters.toget;
1269         se->num_termlists = 0;
1270         se->reclist = reclist_create(se->nmem, maxrecs);
1271         extract_terms(se->nmem, query, p);
1272         se->relevance = relevance_create(se->nmem, (const char **) p, maxrecs);
1273         se->total_records = se->total_hits = se->total_merged = 0;
1274         se->expected_maxrecs = maxrecs;
1275     }
1276     else
1277         return "NOTARGETS";
1278
1279     return 0;
1280 }
1281
1282 void destroy_session(struct session *s)
1283 {
1284     yaz_log(YLOG_LOG, "Destroying session");
1285     while (s->clients)
1286         client_destroy(s->clients);
1287     nmem_destroy(s->nmem);
1288     wrbuf_free(s->wrbuf, 1);
1289 }
1290
1291 struct session *new_session()
1292 {
1293     int i;
1294     struct session *session = xmalloc(sizeof(*session));
1295
1296     yaz_log(YLOG_DEBUG, "New pazpar2 session");
1297
1298     session->total_hits = 0;
1299     session->total_records = 0;
1300     session->num_termlists = 0;
1301     session->reclist = 0;
1302     session->requestid = -1;
1303     session->clients = 0;
1304     session->expected_maxrecs = 0;
1305     session->query[0] = '\0';
1306     session->nmem = nmem_create();
1307     session->wrbuf = wrbuf_alloc();
1308     for (i = 0; i <= SESSION_WATCH_MAX; i++)
1309     {
1310         session->watchlist[i].data = 0;
1311         session->watchlist[i].fun = 0;
1312     }
1313
1314     select_targets(session);
1315
1316     return session;
1317 }
1318
1319 struct hitsbytarget *hitsbytarget(struct session *se, int *count)
1320 {
1321     static struct hitsbytarget res[1000]; // FIXME MM
1322     struct client *cl;
1323
1324     *count = 0;
1325     for (cl = se->clients; cl; cl = cl->next)
1326     {
1327         strcpy(res[*count].id, cl->database->host->hostport);
1328         res[*count].hits = cl->hits;
1329         res[*count].records = cl->records;
1330         res[*count].diagnostic = cl->diagnostic;
1331         res[*count].state = client_states[cl->state];
1332         res[*count].connected  = cl->connection ? 1 : 0;
1333         (*count)++;
1334     }
1335
1336     return res;
1337 }
1338
1339 struct termlist_score **termlist(struct session *s, const char *name, int *num)
1340 {
1341     int i;
1342
1343     for (i = 0; i < s->num_termlists; i++)
1344         if (!strcmp(s->termlists[i].name, name))
1345             return termlist_highscore(s->termlists[i].termlist, num);
1346     return 0;
1347 }
1348
1349 #ifdef MISSING_HEADERS
1350 void report_nmem_stats(void)
1351 {
1352     size_t in_use, is_free;
1353
1354     nmem_get_memory_in_use(&in_use);
1355     nmem_get_memory_free(&is_free);
1356
1357     yaz_log(YLOG_LOG, "nmem stat: use=%ld free=%ld",
1358             (long) in_use, (long) is_free);
1359 }
1360 #endif
1361
1362 struct record_cluster *show_single(struct session *s, int id)
1363 {
1364     struct record_cluster *r;
1365
1366     reclist_rewind(s->reclist);
1367     while ((r = reclist_read_record(s->reclist)))
1368         if (r->recid == id)
1369             return r;
1370     return 0;
1371 }
1372
1373 struct record_cluster **show(struct session *s, struct reclist_sortparms *sp, int start,
1374         int *num, int *total, int *sumhits, NMEM nmem_show)
1375 {
1376     struct record_cluster **recs = nmem_malloc(nmem_show, *num
1377                                        * sizeof(struct record_cluster *));
1378     struct reclist_sortparms *spp;
1379     int i;
1380 #if USE_TIMING
1381     yaz_timing_t t = yaz_timing_create();
1382 #endif
1383
1384     for (spp = sp; spp; spp = spp->next)
1385         if (spp->type == Metadata_sortkey_relevance)
1386         {
1387             relevance_prepare_read(s->relevance, s->reclist);
1388             break;
1389         }
1390     reclist_sort(s->reclist, sp);
1391
1392     *total = s->reclist->num_records;
1393     *sumhits = s->total_hits;
1394
1395     for (i = 0; i < start; i++)
1396         if (!reclist_read_record(s->reclist))
1397         {
1398             *num = 0;
1399             recs = 0;
1400             break;
1401         }
1402
1403     for (i = 0; i < *num; i++)
1404     {
1405         struct record_cluster *r = reclist_read_record(s->reclist);
1406         if (!r)
1407         {
1408             *num = i;
1409             break;
1410         }
1411         recs[i] = r;
1412     }
1413 #if USE_TIMING
1414     yaz_timing_stop(t);
1415     yaz_log(YLOG_LOG, "show %6.5f %3.2f %3.2f",
1416             yaz_timing_get_real(t), yaz_timing_get_user(t),
1417             yaz_timing_get_sys(t));
1418     yaz_timing_destroy(&t);
1419 #endif
1420     return recs;
1421 }
1422
1423 void statistics(struct session *se, struct statistics *stat)
1424 {
1425     struct client *cl;
1426     int count = 0;
1427
1428     memset(stat, 0, sizeof(*stat));
1429     for (cl = se->clients; cl; cl = cl->next)
1430     {
1431         if (!cl->connection)
1432             stat->num_no_connection++;
1433         switch (cl->state)
1434         {
1435             case Client_Connecting: stat->num_connecting++; break;
1436             case Client_Initializing: stat->num_initializing++; break;
1437             case Client_Searching: stat->num_searching++; break;
1438             case Client_Presenting: stat->num_presenting++; break;
1439             case Client_Idle: stat->num_idle++; break;
1440             case Client_Failed: stat->num_failed++; break;
1441             case Client_Error: stat->num_error++; break;
1442             default: break;
1443         }
1444         count++;
1445     }
1446     stat->num_hits = se->total_hits;
1447     stat->num_records = se->total_records;
1448
1449     stat->num_clients = count;
1450 }
1451
1452 static CCL_bibset load_cclfile(const char *fn)
1453 {
1454     CCL_bibset res = ccl_qual_mk();
1455     if (ccl_qual_fname(res, fn) < 0)
1456     {
1457         yaz_log(YLOG_FATAL|YLOG_ERRNO, "%s", fn);
1458         exit(1);
1459     }
1460     return res;
1461 }
1462
1463 static void start_http_listener(void)
1464 {
1465     char hp[128] = "";
1466     struct conf_server *ser = global_parameters.server;
1467
1468     if (*global_parameters.listener_override)
1469         strcpy(hp, global_parameters.listener_override);
1470     else
1471     {
1472         strcpy(hp, ser->host ? ser->host : "");
1473         if (ser->port)
1474         {
1475             if (*hp)
1476                 strcat(hp, ":");
1477             sprintf(hp + strlen(hp), "%d", ser->port);
1478         }
1479     }
1480     http_init(hp);
1481 }
1482
1483 static void start_proxy(void)
1484 {
1485     char hp[128] = "";
1486     struct conf_server *ser = global_parameters.server;
1487
1488     if (*global_parameters.proxy_override)
1489         strcpy(hp, global_parameters.proxy_override);
1490     else if (ser->proxy_host || ser->proxy_port)
1491     {
1492         strcpy(hp, ser->proxy_host ? ser->proxy_host : "");
1493         if (ser->proxy_port)
1494         {
1495             if (*hp)
1496                 strcat(hp, ":");
1497             sprintf(hp + strlen(hp), "%d", ser->proxy_port);
1498         }
1499     }
1500     else
1501         return;
1502
1503     http_set_proxyaddr(hp);
1504 }
1505
1506 int main(int argc, char **argv)
1507 {
1508     int ret;
1509     char *arg;
1510
1511     if (signal(SIGPIPE, SIG_IGN) == SIG_ERR)
1512         yaz_log(YLOG_WARN|YLOG_ERRNO, "signal");
1513
1514     yaz_log_init(YLOG_DEFAULT_LEVEL, "pazpar2", 0);
1515
1516     while ((ret = options("f:x:h:p:C:s:d", argv, argc, &arg)) != -2)
1517     {
1518         switch (ret) {
1519             case 'f':
1520                 if (!read_config(arg))
1521                     exit(1);
1522                 break;
1523             case 'h':
1524                 strcpy(global_parameters.listener_override, arg);
1525                 break;
1526             case 'C':
1527                 global_parameters.ccl_filter = load_cclfile(arg);
1528                 break;
1529             case 'p':
1530                 strcpy(global_parameters.proxy_override, arg);
1531                 break;
1532             case 's':
1533                 load_simpletargets(arg);
1534                 break;
1535             case 'd':
1536                 global_parameters.dump_records = 1;
1537                 break;
1538             default:
1539                 fprintf(stderr, "Usage: pazpar2\n"
1540                         "    -f configfile\n"
1541                         "    -h [host:]port          (REST protocol listener)\n"
1542                         "    -C cclconfig\n"
1543                         "    -s simpletargetfile\n"
1544                         "    -p hostname[:portno]    (HTTP proxy)\n");
1545                 exit(1);
1546         }
1547     }
1548
1549     if (!config)
1550     {
1551         yaz_log(YLOG_FATAL, "Load config with -f");
1552         exit(1);
1553     }
1554     global_parameters.server = config->servers;
1555
1556     start_http_listener();
1557     start_proxy();
1558     global_parameters.ccl_filter = load_cclfile("../etc/default.bib");
1559     global_parameters.yaz_marc = yaz_marc_create();
1560     yaz_marc_subfield_str(global_parameters.yaz_marc, "\t");
1561     global_parameters.odr_in = odr_createmem(ODR_DECODE);
1562     global_parameters.odr_out = odr_createmem(ODR_ENCODE);
1563
1564     event_loop(&channel_list);
1565
1566     return 0;
1567 }
1568
1569 /*
1570  * Local variables:
1571  * c-basic-offset: 4
1572  * indent-tabs-mode: nil
1573  * End:
1574  * vim: shiftwidth=4 tabstop=8 expandtab
1575  */