src/pazpar2.c

   1 /* $Id: pazpar2.c,v 1.38 2007-01-16 19:42:20 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         do {
 323             *(pout--) = '\0';
 324         }
 325         while (pout > buf && *pout == ' ');
 326
 327     return buf;
 328 }
 329
 330
 331 #ifdef GAGA
 332 // FIXME needs to be generalized. Should flexibly generate X lists per search
 333 static void extract_subject(struct session *s, const char *rec)
 334 {
 335     const char *field, *subfield;
 336
 337     while ((field = find_field(rec, "650")))
 338     {
 339         rec = field;
 340         if ((subfield = find_subfield(field, 'a')))
 341         {
 342             char *e, *ef;
 343             char buf[1024];
 344             int len;
 345
 346             ef = index(subfield, '\n');
 347             if (!ef)
 348                 return;
 349             if ((e = index(subfield, '\t')) && e < ef)
 350                 ef = e;
 351             while (ef > subfield && !isalpha(*(ef - 1)) && *(ef - 1) != ')')
 352                 ef--;
 353             len = ef - subfield;
 354             assert(len < 1023);
 355             memcpy(buf, subfield, len);
 356             buf[len] = '\0';
 357 #ifdef FIXME
 358             if (*buf)
 359                 termlist_insert(s->termlist, buf);
 360 #endif
 361         }
 362     }
 363 }
 364 #endif
 365
 366 static void add_facet(struct session *s, const char *type, const char *value)
 367 {
 368     int i;
 369
 370     if (!*value)
 371         return;
 372     for (i = 0; i < s->num_termlists; i++)
 373         if (!strcmp(s->termlists[i].name, type))
 374             break;
 375     if (i == s->num_termlists)
 376     {
 377         if (i == SESSION_MAX_TERMLISTS)
 378         {
 379             yaz_log(YLOG_FATAL, "Too many termlists");
 380             exit(1);
 381         }
 382         s->termlists[i].name = nmem_strdup(s->nmem, type);
 383         s->termlists[i].termlist = termlist_create(s->nmem, s->expected_maxrecs, 15);
 384         s->num_termlists = i + 1;
 385     }
 386     termlist_insert(s->termlists[i].termlist, value);
 387 }
 388
 389 int yaz_marc_write_xml();
 390
 391 static xmlDoc *normalize_record(struct client *cl, Z_External *rec)
 392 {
 393     struct conf_retrievalprofile *rprofile = cl->database->rprofile;
 394     struct conf_retrievalmap *m;
 395     xmlNode *res;
 396     xmlDoc *rdoc;
 397
 398     // First normalize to XML
 399     if (rprofile->native_syntax == Nativesyn_iso2709)
 400     {
 401         char *buf;
 402         int len;
 403         if (rec->which != Z_External_octet)
 404         {
 405             yaz_log(YLOG_WARN, "Unexpected external branch, probably BER");
 406             return 0;
 407         }
 408         buf = (char*) rec->u.octet_aligned->buf;
 409         len = rec->u.octet_aligned->len;
 410         if (yaz_marc_read_iso2709(rprofile->yaz_marc, buf, len) < 0)
 411         {
 412             yaz_log(YLOG_WARN, "Failed to decode MARC");
 413             return 0;
 414         }
 415         if (yaz_marc_write_xml(rprofile->yaz_marc, &res,
 416                     "http://www.loc.gov/MARC21/slim", 0, 0) < 0)
 417         {
 418             yaz_log(YLOG_WARN, "Failed to encode as XML");
 419             return 0;
 420         }
 421         rdoc = xmlNewDoc("1.0");
 422         xmlDocSetRootElement(rdoc, res);
 423     }
 424     else
 425     {
 426         yaz_log(YLOG_FATAL, "Unknown native_syntax in normalize_record");
 427         exit(1);
 428     }
 429     for (m = rprofile->maplist; m; m = m->next)
 430     {
 431         xmlDoc *new;
 432         if (m->type != Map_xslt)
 433         {
 434             yaz_log(YLOG_WARN, "Unknown map type");
 435             return 0;
 436         }
 437         if (!(new = xsltApplyStylesheet(m->stylesheet, rdoc, 0)))
 438         {
 439             yaz_log(YLOG_WARN, "XSLT transformation failed");
 440             return 0;
 441         }
 442         xmlFreeDoc(rdoc);
 443         rdoc = new;
 444     }
 445     if (global_parameters.dump_records)
 446     {
 447         fprintf(stderr, "Record:\n----------------\n");
 448 #if LIBXML_VERSION >= 20600
 449         xmlDocFormatDump(stderr, rdoc, 1);
 450 #else
 451         xmlDocDump(stderr, rdoc);
 452 #endif
 453     }
 454     return rdoc;
 455 }
 456
 457 // Extract what appears to be years from buf, storing highest and
 458 // lowest values.
 459 static int extract_years(const char *buf, int *first, int *last)
 460 {
 461     *first = -1;
 462     *last = -1;
 463     while (*buf)
 464     {
 465         const char *e;
 466         int len;
 467
 468         while (*buf && !isdigit(*buf))
 469             buf++;
 470         len = 0;
 471         for (e = buf; *e && isdigit(*e); e++)
 472             len++;
 473         if (len == 4)
 474         {
 475             int value = atoi(buf);
 476             if (*first < 0 || value < *first)
 477                 *first = value;
 478             if (*last < 0 || value > *last)
 479                 *last = value;
 480         }
 481         buf = e;
 482     }
 483     return *first;
 484 }
 485
 486 static struct record *ingest_record(struct client *cl, Z_External *rec)
 487 {
 488     xmlDoc *xdoc = normalize_record(cl, rec);
 489     xmlNode *root, *n;
 490     struct record *res;
 491     struct record_cluster *cluster;
 492     struct session *se = cl->session;
 493     xmlChar *mergekey, *mergekey_norm;
 494     xmlChar *type = 0;
 495     xmlChar *value = 0;
 496     struct conf_service *service = global_parameters.server->service;
 497
 498     if (!xdoc)
 499         return 0;
 500
 501     root = xmlDocGetRootElement(xdoc);
 502     if (!(mergekey = xmlGetProp(root, "mergekey")))
 503     {
 504         yaz_log(YLOG_WARN, "No mergekey found in record");
 505         xmlFreeDoc(xdoc);
 506         return 0;
 507     }
 508
 509     res = nmem_malloc(se->nmem, sizeof(struct record));
 510     res->next = 0;
 511     res->metadata = nmem_malloc(se->nmem,
 512             sizeof(struct record_metadata*) * service->num_metadata);
 513     memset(res->metadata, 0, sizeof(struct record_metadata*) * service->num_metadata);
 514
 515     mergekey_norm = nmem_strdup(se->nmem, (char*) mergekey);
 516     xmlFree(mergekey);
 517     normalize_mergekey(mergekey_norm, 0);
 518
 519     cluster = reclist_insert(se->reclist, res, mergekey_norm, &se->total_merged);
 520     if (!cluster)
 521     {
 522         /* no room for record */
 523         xmlFreeDoc(xdoc);
 524         return 0;
 525     }
 526     relevance_newrec(se->relevance, cluster);
 527
 528     for (n = root->children; n; n = n->next)
 529     {
 530         if (type)
 531             xmlFree(type);
 532         if (value)
 533             xmlFree(value);
 534         type = value = 0;
 535
 536         if (n->type != XML_ELEMENT_NODE)
 537             continue;
 538         if (!strcmp(n->name, "metadata"))
 539         {
 540             struct conf_metadata *md = 0;
 541             struct conf_sortkey *sk = 0;
 542             struct record_metadata **wheretoput, *newm;
 543             int imeta;
 544             int first, last;
 545
 546             type = xmlGetProp(n, "type");
 547             value = xmlNodeListGetString(xdoc, n->children, 0);
 548
 549             if (!type || !value)
 550                 continue;
 551
 552             // First, find out what field we're looking at
 553             for (imeta = 0; imeta < service->num_metadata; imeta++)
 554                 if (!strcmp(type, service->metadata[imeta].name))
 555                 {
 556                     md = &service->metadata[imeta];
 557                     if (md->sortkey_offset >= 0)
 558                         sk = &service->sortkeys[md->sortkey_offset];
 559                     break;
 560                 }
 561             if (!md)
 562             {
 563                 yaz_log(YLOG_WARN, "Ignoring unknown metadata element: %s", type);
 564                 continue;
 565             }
 566
 567             // Find out where we are putting it
 568             if (md->merge == Metadata_merge_no)
 569                 wheretoput = &res->metadata[imeta];
 570             else
 571                 wheretoput = &cluster->metadata[imeta];
 572
 573             // Put it there
 574             newm = nmem_malloc(se->nmem, sizeof(struct record_metadata));
 575             newm->next = 0;
 576             if (md->type == Metadata_type_generic)
 577             {
 578                 char *p;
 579                 newm->data.text = nmem_strdup(se->nmem, value);
 580                 for (p = newm->data.text + strlen(newm->data.text) - 1;
 581                         p > newm->data.text && strchr(" ,/.", *p); p--)
 582                     *p = '\0';
 583
 584             }
 585             else if (md->type == Metadata_type_year)
 586             {
 587                 if (extract_years(value, &first, &last) < 0)
 588                     continue;
 589             }
 590             else
 591             {
 592                 yaz_log(YLOG_WARN, "Unknown type in metadata element %s", type);
 593                 continue;
 594             }
 595             if (md->type == Metadata_type_year && md->merge != Metadata_merge_range)
 596             {
 597                 yaz_log(YLOG_WARN, "Only range merging supported for years");
 598                 continue;
 599             }
 600             if (md->merge == Metadata_merge_unique)
 601             {
 602                 struct record_metadata *mnode;
 603                 for (mnode = *wheretoput; mnode; mnode = mnode->next)
 604                     if (!strcmp(mnode->data.text, newm->data.text))
 605                         break;
 606                 if (!mnode)
 607                 {
 608                     newm->next = *wheretoput;
 609                     *wheretoput = newm;
 610                 }
 611             }
 612             else if (md->merge == Metadata_merge_longest)
 613             {
 614                 if (!*wheretoput ||
 615                         strlen(newm->data.text) > strlen((*wheretoput)->data.text))
 616                 {
 617                     *wheretoput = newm;
 618                     if (sk)
 619                     {
 620                         char *s = nmem_strdup(se->nmem, newm->data.text);
 621                         if (!cluster->sortkeys[md->sortkey_offset])
 622                             cluster->sortkeys[md->sortkey_offset] =
 623                                 nmem_malloc(se->nmem, sizeof(union data_types));
 624                         normalize_mergekey(s,
 625                                 (sk->type == Metadata_sortkey_skiparticle));
 626                         cluster->sortkeys[md->sortkey_offset]->text = s;
 627                     }
 628                 }
 629             }
 630             else if (md->merge == Metadata_merge_all || md->merge == Metadata_merge_no)
 631             {
 632                 newm->next = *wheretoput;
 633                 *wheretoput = newm;
 634             }
 635             else if (md->merge == Metadata_merge_range)
 636             {
 637                 assert(md->type == Metadata_type_year);
 638                 if (!*wheretoput)
 639                 {
 640                     *wheretoput = newm;
 641                     (*wheretoput)->data.number.min = first;
 642                     (*wheretoput)->data.number.max = last;
 643                     if (sk)
 644                         cluster->sortkeys[md->sortkey_offset] = &newm->data;
 645                 }
 646                 else
 647                 {
 648                     if (first < (*wheretoput)->data.number.min)
 649                         (*wheretoput)->data.number.min = first;
 650                     if (last > (*wheretoput)->data.number.max)
 651                         (*wheretoput)->data.number.max = last;
 652                 }
 653 #ifdef GAGA
 654                 if (sk)
 655                 {
 656                     union data_types *sdata = cluster->sortkeys[md->sortkey_offset];
 657                     yaz_log(YLOG_LOG, "SK range: %d-%d", sdata->number.min, sdata->number.max);
 658                 }
 659 #endif
 660             }
 661             else
 662                 yaz_log(YLOG_WARN, "Don't know how to merge on element name %s", md->name);
 663
 664             if (md->rank)
 665                 relevance_countwords(se->relevance, cluster, value, md->rank);
 666             if (md->termlist)
 667                 add_facet(se, type, value);
 668             xmlFree(type);
 669             xmlFree(value);
 670             type = value = 0;
 671         }
 672         else
 673             yaz_log(YLOG_WARN, "Unexpected element %s in internal record", n->name);
 674     }
 675     if (type)
 676         xmlFree(type);
 677     if (value)
 678         xmlFree(value);
 679
 680     xmlFreeDoc(xdoc);
 681
 682     relevance_donerecord(se->relevance, cluster);
 683     se->total_records++;
 684
 685     return res;
 686 }
 687
 688 static void ingest_records(struct client *cl, Z_Records *r)
 689 {
 690 #if USE_TIMING
 691     yaz_timing_t t = yaz_timing_create();
 692 #endif
 693     struct record *rec;
 694     struct session *s = cl->session;
 695     Z_NamePlusRecordList *rlist;
 696     int i;
 697
 698     if (r->which != Z_Records_DBOSD)
 699         return;
 700     rlist = r->u.databaseOrSurDiagnostics;
 701     for (i = 0; i < rlist->num_records; i++)
 702     {
 703         Z_NamePlusRecord *npr = rlist->records[i];
 704
 705         if (npr->which != Z_NamePlusRecord_databaseRecord)
 706         {
 707             yaz_log(YLOG_WARN, "Unexpected record type, probably diagnostic");
 708             continue;
 709         }
 710
 711         rec = ingest_record(cl, npr->u.databaseRecord);
 712         if (!rec)
 713             continue;
 714     }
 715     if (s->watchlist[SESSION_WATCH_RECORDS].fun && rlist->num_records)
 716         session_alert_watch(s, SESSION_WATCH_RECORDS);
 717
 718 #if USE_TIMING
 719     yaz_timing_stop(t);
 720     yaz_log(YLOG_LOG, "ingest_records %6.5f %3.2f %3.2f",
 721             yaz_timing_get_real(t), yaz_timing_get_user(t),
 722             yaz_timing_get_sys(t));
 723     yaz_timing_destroy(&t);
 724 #endif
 725 }
 726
 727 static void do_presentResponse(IOCHAN i, Z_APDU *a)
 728 {
 729     struct connection *co = iochan_getdata(i);
 730     struct client *cl = co->client;
 731     Z_PresentResponse *r = a->u.presentResponse;
 732
 733     if (r->records) {
 734         Z_Records *recs = r->records;
 735         if (recs->which == Z_Records_NSD)
 736         {
 737             yaz_log(YLOG_WARN, "Non-surrogate diagnostic");
 738             cl->diagnostic = *recs->u.nonSurrogateDiagnostic->condition;
 739             cl->state = Client_Error;
 740         }
 741     }
 742
 743     if (!*r->presentStatus && cl->state != Client_Error)
 744     {
 745         yaz_log(YLOG_DEBUG, "Good Present response");
 746         cl->records += *r->numberOfRecordsReturned;
 747         ingest_records(cl, r->records);
 748         cl->state = Client_Idle;
 749     }
 750     else if (*r->presentStatus)
 751     {
 752         yaz_log(YLOG_WARN, "Bad Present response");
 753         cl->state = Client_Error;
 754     }
 755 }
 756
 757 static void handler(IOCHAN i, int event)
 758 {
 759     struct connection *co = iochan_getdata(i);
 760     struct client *cl = co->client;
 761     struct session *se = 0;
 762
 763     if (cl)
 764         se = cl->session;
 765     else
 766     {
 767         yaz_log(YLOG_WARN, "Destroying orphan connection");
 768         connection_destroy(co);
 769         return;
 770     }
 771
 772     if (co->state == Conn_Connecting && event & EVENT_OUTPUT)
 773     {
 774         int errcode;
 775         socklen_t errlen = sizeof(errcode);
 776
 777         if (getsockopt(cs_fileno(co->link), SOL_SOCKET, SO_ERROR, &errcode,
 778             &errlen) < 0 || errcode != 0)
 779         {
 780             client_fatal(cl);
 781             return;
 782         }
 783         else
 784         {
 785             yaz_log(YLOG_DEBUG, "Connect OK");
 786             co->state = Conn_Open;
 787             if (cl)
 788                 cl->state = Client_Connected;
 789         }
 790     }
 791
 792     else if (event & EVENT_INPUT)
 793     {
 794         int len = cs_get(co->link, &co->ibuf, &co->ibufsize);
 795
 796         if (len < 0)
 797         {
 798             yaz_log(YLOG_WARN|YLOG_ERRNO, "Error reading from Z server");
 799             connection_destroy(co);
 800             return;
 801         }
 802         else if (len == 0)
 803         {
 804             yaz_log(YLOG_WARN, "EOF reading from Z server");
 805             connection_destroy(co);
 806             return;
 807         }
 808         else if (len > 1) // We discard input if we have no connection
 809         {
 810             co->state = Conn_Open;
 811
 812             if (cl && (cl->requestid == se->requestid || cl->state == Client_Initializing))
 813             {
 814                 Z_APDU *a;
 815
 816                 odr_reset(global_parameters.odr_in);
 817                 odr_setbuf(global_parameters.odr_in, co->ibuf, len, 0);
 818                 if (!z_APDU(global_parameters.odr_in, &a, 0, 0))
 819                 {
 820                     client_fatal(cl);
 821                     return;
 822                 }
 823                 switch (a->which)
 824                 {
 825                     case Z_APDU_initResponse:
 826                         do_initResponse(i, a);
 827                         break;
 828                     case Z_APDU_searchResponse:
 829                         do_searchResponse(i, a);
 830                         break;
 831                     case Z_APDU_presentResponse:
 832                         do_presentResponse(i, a);
 833                         break;
 834                     default:
 835                         yaz_log(YLOG_WARN, "Unexpected result from server");
 836                         client_fatal(cl);
 837                         return;
 838                 }
 839                 // We aren't expecting staggered output from target
 840                 // if (cs_more(t->link))
 841                 //    iochan_setevent(i, EVENT_INPUT);
 842             }
 843             else  // we throw away response and go to idle mode
 844             {
 845                 yaz_log(YLOG_DEBUG, "Ignoring result of expired operation");
 846                 cl->state = Client_Idle;
 847             }
 848         }
 849         /* if len==1 we do nothing but wait for more input */
 850     }
 851
 852     if (cl->state == Client_Connected) {
 853         send_init(i);
 854     }
 855
 856     if (cl->state == Client_Idle)
 857     {
 858         if (cl->requestid != se->requestid && *se->query) {
 859             send_search(i);
 860         }
 861         else if (cl->hits > 0 && cl->records < global_parameters.toget &&
 862             cl->records < cl->hits) {
 863             send_present(i);
 864         }
 865     }
 866 }
 867
 868 // Disassociate connection from client
 869 static void connection_release(struct connection *co)
 870 {
 871     struct client *cl = co->client;
 872
 873     yaz_log(YLOG_DEBUG, "Connection release %s", co->host->hostport);
 874     if (!cl)
 875         return;
 876     cl->connection = 0;
 877     co->client = 0;
 878 }
 879
 880 // Close connection and recycle structure
 881 static void connection_destroy(struct connection *co)
 882 {
 883     struct host *h = co->host;
 884     cs_close(co->link);
 885     iochan_destroy(co->iochan);
 886
 887     yaz_log(YLOG_DEBUG, "Connection destroy %s", co->host->hostport);
 888     if (h->connections == co)
 889         h->connections = co->next;
 890     else
 891     {
 892         struct connection *pco;
 893         for (pco = h->connections; pco && pco->next != co; pco = pco->next)
 894             ;
 895         if (pco)
 896             pco->next = co->next;
 897         else
 898             abort();
 899     }
 900     if (co->client)
 901     {
 902         if (co->client->state != Client_Idle)
 903             co->client->state = Client_Disconnected;
 904         co->client->connection = 0;
 905     }
 906     co->next = connection_freelist;
 907     connection_freelist = co;
 908 }
 909
 910 // Creates a new connection for client, associated with the host of
 911 // client's database
 912 static struct connection *connection_create(struct client *cl)
 913 {
 914     struct connection *new;
 915     COMSTACK link;
 916     int res;
 917     void *addr;
 918
 919     yaz_log(YLOG_DEBUG, "Connection create %s", cl->database->url);
 920     if (!(link = cs_create(tcpip_type, 0, PROTO_Z3950)))
 921     {
 922         yaz_log(YLOG_FATAL|YLOG_ERRNO, "Failed to create comstack");
 923         exit(1);
 924     }
 925
 926     if (!(addr = cs_straddr(link, cl->database->host->ipport)))
 927     {
 928         yaz_log(YLOG_WARN|YLOG_ERRNO, "Lookup of IP address %s failed?",
 929             cl->database->host->ipport);
 930         return 0;
 931     }
 932
 933     res = cs_connect(link, addr);
 934     if (res < 0)
 935     {
 936         yaz_log(YLOG_WARN|YLOG_ERRNO, "cs_connect %s", cl->database->url);
 937         return 0;
 938     }
 939
 940     if ((new = connection_freelist))
 941         connection_freelist = new->next;
 942     else
 943     {
 944         new = xmalloc(sizeof (struct connection));
 945         new->ibuf = 0;
 946         new->ibufsize = 0;
 947     }
 948     new->state = Conn_Connecting;
 949     new->host = cl->database->host;
 950     new->next = new->host->connections;
 951     new->host->connections = new;
 952     new->client = cl;
 953     cl->connection = new;
 954     new->link = link;
 955
 956     new->iochan = iochan_create(cs_fileno(link), handler, 0);
 957     iochan_setdata(new->iochan, new);
 958     new->iochan->next = channel_list;
 959     channel_list = new->iochan;
 960     return new;
 961 }
 962
 963 // Close connection and set state to error
 964 static void client_fatal(struct client *cl)
 965 {
 966     yaz_log(YLOG_WARN, "Fatal error from %s", cl->database->url);
 967     connection_destroy(cl->connection);
 968     cl->state = Client_Error;
 969 }
 970
 971 // Ensure that client has a connection associated
 972 static int client_prep_connection(struct client *cl)
 973 {
 974     struct connection *co;
 975     struct session *se = cl->session;
 976     struct host *host = cl->database->host;
 977
 978     co = cl->connection;
 979
 980     yaz_log(YLOG_DEBUG, "Client prep %s", cl->database->url);
 981
 982     if (!co)
 983     {
 984         // See if someone else has an idle connection
 985         // We should look at timestamps here to select the longest-idle connection
 986         for (co = host->connections; co; co = co->next)
 987             if (co->state == Conn_Open && (!co->client || co->client->session != se))
 988                 break;
 989         if (co)
 990         {
 991             connection_release(co);
 992             cl->connection = co;
 993             co->client = cl;
 994         }
 995         else
 996             co = connection_create(cl);
 997     }
 998     if (co)
 999     {
1000         if (co->state == Conn_Connecting)
1001         {
1002             cl->state = Client_Connecting;
1003             iochan_setflag(co->iochan, EVENT_OUTPUT);
1004         }
1005         else if (co->state == Conn_Open)
1006         {
1007             if (cl->state == Client_Error || cl->state == Client_Disconnected)
1008                 cl->state = Client_Idle;
1009             iochan_setflag(co->iochan, EVENT_OUTPUT);
1010         }
1011         return 1;
1012     }
1013     else
1014         return 0;
1015 }
1016
1017 // This function will most likely vanish when a proper target profile mechanism is
1018 // introduced.
1019 void load_simpletargets(const char *fn)
1020 {
1021     FILE *f = fopen(fn, "r");
1022     char line[256];
1023
1024     if (!f)
1025     {
1026         yaz_log(YLOG_WARN|YLOG_ERRNO, "open %s", fn);
1027         exit(1);
1028     }
1029
1030     while (fgets(line, 255, f))
1031     {
1032         char *url, *db;
1033         struct host *host;
1034         struct database *database;
1035
1036         if (strncmp(line, "target ", 7))
1037             continue;
1038         url = line + 7;
1039         url[strlen(url) - 1] = '\0';
1040         yaz_log(YLOG_DEBUG, "Target: %s", url);
1041         if ((db = strchr(url, '/')))
1042             *(db++) = '\0';
1043         else
1044             db = "Default";
1045
1046         for (host = hosts; host; host = host->next)
1047             if (!strcmp(url, host->hostport))
1048                 break;
1049         if (!host)
1050         {
1051             struct addrinfo *addrinfo, hints;
1052             char *port;
1053             char ipport[128];
1054             unsigned char addrbuf[4];
1055             int res;
1056
1057             host = xmalloc(sizeof(struct host));
1058             host->hostport = xstrdup(url);
1059             host->connections = 0;
1060
1061             if ((port = strchr(url, ':')))
1062                 *(port++) = '\0';
1063             else
1064                 port = "210";
1065
1066             hints.ai_flags = 0;
1067             hints.ai_family = PF_INET;
1068             hints.ai_socktype = SOCK_STREAM;
1069             hints.ai_protocol = IPPROTO_TCP;
1070             hints.ai_addrlen = 0;
1071             hints.ai_addr = 0;
1072             hints.ai_canonname = 0;
1073             hints.ai_next = 0;
1074             // This is not robust code. It assumes that getaddrinfo returns AF_INET
1075             // address.
1076             if ((res = getaddrinfo(url, port, &hints, &addrinfo)))
1077             {
1078                 yaz_log(YLOG_WARN, "Failed to resolve %s: %s", url, gai_strerror(res));
1079                 xfree(host->hostport);
1080                 xfree(host);
1081                 continue;
1082             }
1083             assert(addrinfo->ai_family == PF_INET);
1084             memcpy(addrbuf, &((struct sockaddr_in*)addrinfo->ai_addr)->sin_addr.s_addr, 4);
1085             sprintf(ipport, "%u.%u.%u.%u:%s",
1086                     addrbuf[0], addrbuf[1], addrbuf[2], addrbuf[3], port);
1087             host->ipport = xstrdup(ipport);
1088             freeaddrinfo(addrinfo);
1089             host->next = hosts;
1090             hosts = host;
1091         }
1092         database = xmalloc(sizeof(struct database));
1093         database->host = host;
1094         database->url = xmalloc(strlen(url) + strlen(db) + 2);
1095         strcpy(database->url, url);
1096         strcat(database->url, "/");
1097         strcat(database->url, db);
1098
1099         database->databases = xmalloc(2 * sizeof(char *));
1100         database->databases[0] = xstrdup(db);
1101         database->databases[1] = 0;
1102         database->errors = 0;
1103         database->qprofile = 0;
1104         database->rprofile = database_retrieval_profile(database);
1105         database->next = databases;
1106         databases = database;
1107
1108     }
1109     fclose(f);
1110 }
1111
1112 static void pull_terms(NMEM nmem, struct ccl_rpn_node *n, char **termlist, int *num)
1113 {
1114     switch (n->kind)
1115     {
1116         case CCL_RPN_AND:
1117         case CCL_RPN_OR:
1118         case CCL_RPN_NOT:
1119         case CCL_RPN_PROX:
1120             pull_terms(nmem, n->u.p[0], termlist, num);
1121             pull_terms(nmem, n->u.p[1], termlist, num);
1122             break;
1123         case CCL_RPN_TERM:
1124             termlist[(*num)++] = nmem_strdup(nmem, n->u.t.term);
1125             break;
1126         default: // NOOP
1127             break;
1128     }
1129 }
1130
1131 // Extract terms from query into null-terminated termlist
1132 static int extract_terms(NMEM nmem, char *query, char **termlist)
1133 {
1134     int error, pos;
1135     struct ccl_rpn_node *n;
1136     int num = 0;
1137
1138     n = ccl_find_str(global_parameters.ccl_filter, query, &error, &pos);
1139     if (!n)
1140         return -1;
1141     pull_terms(nmem, n, termlist, &num);
1142     termlist[num] = 0;
1143     ccl_rpn_delete(n);
1144     return 0;
1145 }
1146
1147 static struct client *client_create(void)
1148 {
1149     struct client *r;
1150     if (client_freelist)
1151     {
1152         r = client_freelist;
1153         client_freelist = client_freelist->next;
1154     }
1155     else
1156         r = xmalloc(sizeof(struct client));
1157     r->database = 0;
1158     r->connection = 0;
1159     r->session = 0;
1160     r->hits = 0;
1161     r->records = 0;
1162     r->setno = 0;
1163     r->requestid = -1;
1164     r->diagnostic = 0;
1165     r->state = Client_Disconnected;
1166     r->next = 0;
1167     return r;
1168 }
1169
1170 void client_destroy(struct client *c)
1171 {
1172     struct session *se = c->session;
1173     if (c == se->clients)
1174         se->clients = c->next;
1175     else
1176     {
1177         struct client *cc;
1178         for (cc = se->clients; cc && cc->next != c; cc = cc->next)
1179             ;
1180         if (cc)
1181             cc->next = c->next;
1182     }
1183     if (c->connection)
1184         connection_release(c->connection);
1185     c->next = client_freelist;
1186     client_freelist = c;
1187 }
1188
1189 void session_set_watch(struct session *s, int what, session_watchfun fun, void *data)
1190 {
1191     s->watchlist[what].fun = fun;
1192     s->watchlist[what].data = data;
1193 }
1194
1195 void session_alert_watch(struct session *s, int what)
1196 {
1197     if (!s->watchlist[what].fun)
1198         return;
1199     (*s->watchlist[what].fun)(s->watchlist[what].data);
1200     s->watchlist[what].fun = 0;
1201     s->watchlist[what].data = 0;
1202 }
1203
1204 // This needs to be extended with selection criteria
1205 static struct conf_retrievalprofile *database_retrieval_profile(struct database *db)
1206 {
1207     if (!config)
1208     {
1209         yaz_log(YLOG_FATAL, "Must load configuration (-f)");
1210         exit(1);
1211     }
1212     if (!config->retrievalprofiles)
1213     {
1214         yaz_log(YLOG_FATAL, "No retrieval profiles defined");
1215     }
1216     return config->retrievalprofiles;
1217 }
1218
1219 // This should be extended with parameters to control selection criteria
1220 // Associates a set of clients with a session;
1221 int select_targets(struct session *se)
1222 {
1223     struct database *db;
1224     int c = 0;
1225
1226     while (se->clients)
1227         client_destroy(se->clients);
1228     for (db = databases; db; db = db->next)
1229     {
1230         struct client *cl = client_create();
1231         cl->database = db;
1232         cl->session = se;
1233         cl->next = se->clients;
1234         se->clients = cl;
1235         c++;
1236     }
1237     return c;
1238 }
1239
1240 int session_active_clients(struct session *s)
1241 {
1242     struct client *c;
1243     int res = 0;
1244
1245     for (c = s->clients; c; c = c->next)
1246         if (c->connection && (c->state == Client_Connecting ||
1247                     c->state == Client_Initializing ||
1248                     c->state == Client_Searching ||
1249                     c->state == Client_Presenting))
1250             res++;
1251
1252     return res;
1253 }
1254
1255 char *search(struct session *se, char *query)
1256 {
1257     int live_channels = 0;
1258     struct client *cl;
1259
1260     yaz_log(YLOG_DEBUG, "Search");
1261
1262     strcpy(se->query, query);
1263     se->requestid++;
1264     nmem_reset(se->nmem);
1265     for (cl = se->clients; cl; cl = cl->next)
1266     {
1267         cl->hits = -1;
1268         cl->records = 0;
1269         cl->diagnostic = 0;
1270
1271         if (client_prep_connection(cl))
1272             live_channels++;
1273     }
1274     if (live_channels)
1275     {
1276         char *p[512];
1277         int maxrecs = live_channels * global_parameters.toget;
1278         se->num_termlists = 0;
1279         se->reclist = reclist_create(se->nmem, maxrecs);
1280         extract_terms(se->nmem, query, p);
1281         se->relevance = relevance_create(se->nmem, (const char **) p, maxrecs);
1282         se->total_records = se->total_hits = se->total_merged = 0;
1283         se->expected_maxrecs = maxrecs;
1284     }
1285     else
1286         return "NOTARGETS";
1287
1288     return 0;
1289 }
1290
1291 void destroy_session(struct session *s)
1292 {
1293     yaz_log(YLOG_LOG, "Destroying session");
1294     while (s->clients)
1295         client_destroy(s->clients);
1296     nmem_destroy(s->nmem);
1297     wrbuf_free(s->wrbuf, 1);
1298 }
1299
1300 struct session *new_session()
1301 {
1302     int i;
1303     struct session *session = xmalloc(sizeof(*session));
1304
1305     yaz_log(YLOG_DEBUG, "New pazpar2 session");
1306
1307     session->total_hits = 0;
1308     session->total_records = 0;
1309     session->num_termlists = 0;
1310     session->reclist = 0;
1311     session->requestid = -1;
1312     session->clients = 0;
1313     session->expected_maxrecs = 0;
1314     session->query[0] = '\0';
1315     session->nmem = nmem_create();
1316     session->wrbuf = wrbuf_alloc();
1317     for (i = 0; i <= SESSION_WATCH_MAX; i++)
1318     {
1319         session->watchlist[i].data = 0;
1320         session->watchlist[i].fun = 0;
1321     }
1322
1323     select_targets(session);
1324
1325     return session;
1326 }
1327
1328 struct hitsbytarget *hitsbytarget(struct session *se, int *count)
1329 {
1330     static struct hitsbytarget res[1000]; // FIXME MM
1331     struct client *cl;
1332
1333     *count = 0;
1334     for (cl = se->clients; cl; cl = cl->next)
1335     {
1336         strcpy(res[*count].id, cl->database->host->hostport);
1337         res[*count].hits = cl->hits;
1338         res[*count].records = cl->records;
1339         res[*count].diagnostic = cl->diagnostic;
1340         res[*count].state = client_states[cl->state];
1341         res[*count].connected  = cl->connection ? 1 : 0;
1342         (*count)++;
1343     }
1344
1345     return res;
1346 }
1347
1348 struct termlist_score **termlist(struct session *s, const char *name, int *num)
1349 {
1350     int i;
1351
1352     for (i = 0; i < s->num_termlists; i++)
1353         if (!strcmp(s->termlists[i].name, name))
1354             return termlist_highscore(s->termlists[i].termlist, num);
1355     return 0;
1356 }
1357
1358 #ifdef MISSING_HEADERS
1359 void report_nmem_stats(void)
1360 {
1361     size_t in_use, is_free;
1362
1363     nmem_get_memory_in_use(&in_use);
1364     nmem_get_memory_free(&is_free);
1365
1366     yaz_log(YLOG_LOG, "nmem stat: use=%ld free=%ld",
1367             (long) in_use, (long) is_free);
1368 }
1369 #endif
1370
1371 struct record_cluster *show_single(struct session *s, int id)
1372 {
1373     struct record_cluster *r;
1374
1375     reclist_rewind(s->reclist);
1376     while ((r = reclist_read_record(s->reclist)))
1377         if (r->recid == id)
1378             return r;
1379     return 0;
1380 }
1381
1382 struct record_cluster **show(struct session *s, struct reclist_sortparms *sp, int start,
1383         int *num, int *total, int *sumhits, NMEM nmem_show)
1384 {
1385     struct record_cluster **recs = nmem_malloc(nmem_show, *num
1386                                        * sizeof(struct record_cluster *));
1387     struct reclist_sortparms *spp;
1388     int i;
1389 #if USE_TIMING
1390     yaz_timing_t t = yaz_timing_create();
1391 #endif
1392
1393     for (spp = sp; spp; spp = spp->next)
1394         if (spp->type == Metadata_sortkey_relevance)
1395         {
1396             relevance_prepare_read(s->relevance, s->reclist);
1397             break;
1398         }
1399     reclist_sort(s->reclist, sp);
1400
1401     *total = s->reclist->num_records;
1402     *sumhits = s->total_hits;
1403
1404     for (i = 0; i < start; i++)
1405         if (!reclist_read_record(s->reclist))
1406         {
1407             *num = 0;
1408             recs = 0;
1409             break;
1410         }
1411
1412     for (i = 0; i < *num; i++)
1413     {
1414         struct record_cluster *r = reclist_read_record(s->reclist);
1415         if (!r)
1416         {
1417             *num = i;
1418             break;
1419         }
1420         recs[i] = r;
1421     }
1422 #if USE_TIMING
1423     yaz_timing_stop(t);
1424     yaz_log(YLOG_LOG, "show %6.5f %3.2f %3.2f",
1425             yaz_timing_get_real(t), yaz_timing_get_user(t),
1426             yaz_timing_get_sys(t));
1427     yaz_timing_destroy(&t);
1428 #endif
1429     return recs;
1430 }
1431
1432 void statistics(struct session *se, struct statistics *stat)
1433 {
1434     struct client *cl;
1435     int count = 0;
1436
1437     memset(stat, 0, sizeof(*stat));
1438     for (cl = se->clients; cl; cl = cl->next)
1439     {
1440         if (!cl->connection)
1441             stat->num_no_connection++;
1442         switch (cl->state)
1443         {
1444             case Client_Connecting: stat->num_connecting++; break;
1445             case Client_Initializing: stat->num_initializing++; break;
1446             case Client_Searching: stat->num_searching++; break;
1447             case Client_Presenting: stat->num_presenting++; break;
1448             case Client_Idle: stat->num_idle++; break;
1449             case Client_Failed: stat->num_failed++; break;
1450             case Client_Error: stat->num_error++; break;
1451             default: break;
1452         }
1453         count++;
1454     }
1455     stat->num_hits = se->total_hits;
1456     stat->num_records = se->total_records;
1457
1458     stat->num_clients = count;
1459 }
1460
1461 static CCL_bibset load_cclfile(const char *fn)
1462 {
1463     CCL_bibset res = ccl_qual_mk();
1464     if (ccl_qual_fname(res, fn) < 0)
1465     {
1466         yaz_log(YLOG_FATAL|YLOG_ERRNO, "%s", fn);
1467         exit(1);
1468     }
1469     return res;
1470 }
1471
1472 static void start_http_listener(void)
1473 {
1474     char hp[128] = "";
1475     struct conf_server *ser = global_parameters.server;
1476
1477     if (*global_parameters.listener_override)
1478         strcpy(hp, global_parameters.listener_override);
1479     else
1480     {
1481         strcpy(hp, ser->host ? ser->host : "");
1482         if (ser->port)
1483         {
1484             if (*hp)
1485                 strcat(hp, ":");
1486             sprintf(hp + strlen(hp), "%d", ser->port);
1487         }
1488     }
1489     http_init(hp);
1490 }
1491
1492 static void start_proxy(void)
1493 {
1494     char hp[128] = "";
1495     struct conf_server *ser = global_parameters.server;
1496
1497     if (*global_parameters.proxy_override)
1498         strcpy(hp, global_parameters.proxy_override);
1499     else if (ser->proxy_host || ser->proxy_port)
1500     {
1501         strcpy(hp, ser->proxy_host ? ser->proxy_host : "");
1502         if (ser->proxy_port)
1503         {
1504             if (*hp)
1505                 strcat(hp, ":");
1506             sprintf(hp + strlen(hp), "%d", ser->proxy_port);
1507         }
1508     }
1509     else
1510         return;
1511
1512     http_set_proxyaddr(hp);
1513 }
1514
1515 int main(int argc, char **argv)
1516 {
1517     int ret;
1518     char *arg;
1519
1520     if (signal(SIGPIPE, SIG_IGN) == SIG_ERR)
1521         yaz_log(YLOG_WARN|YLOG_ERRNO, "signal");
1522
1523     yaz_log_init(YLOG_DEFAULT_LEVEL, "pazpar2", 0);
1524
1525     while ((ret = options("f:x:h:p:C:s:d", argv, argc, &arg)) != -2)
1526     {
1527         switch (ret) {
1528             case 'f':
1529                 if (!read_config(arg))
1530                     exit(1);
1531                 break;
1532             case 'h':
1533                 strcpy(global_parameters.listener_override, arg);
1534                 break;
1535             case 'C':
1536                 global_parameters.ccl_filter = load_cclfile(arg);
1537                 break;
1538             case 'p':
1539                 strcpy(global_parameters.proxy_override, arg);
1540                 break;
1541             case 's':
1542                 load_simpletargets(arg);
1543                 break;
1544             case 'd':
1545                 global_parameters.dump_records = 1;
1546                 break;
1547             default:
1548                 fprintf(stderr, "Usage: pazpar2\n"
1549                         "    -f configfile\n"
1550                         "    -h [host:]port          (REST protocol listener)\n"
1551                         "    -C cclconfig\n"
1552                         "    -s simpletargetfile\n"
1553                         "    -p hostname[:portno]    (HTTP proxy)\n"
1554                         "    -d                      (show internal records)\n");
1555                 exit(1);
1556         }
1557     }
1558
1559     if (!config)
1560     {
1561         yaz_log(YLOG_FATAL, "Load config with -f");
1562         exit(1);
1563     }
1564     global_parameters.server = config->servers;
1565
1566     start_http_listener();
1567     start_proxy();
1568     global_parameters.ccl_filter = load_cclfile("../etc/default.bib");
1569     global_parameters.yaz_marc = yaz_marc_create();
1570     yaz_marc_subfield_str(global_parameters.yaz_marc, "\t");
1571     global_parameters.odr_in = odr_createmem(ODR_DECODE);
1572     global_parameters.odr_out = odr_createmem(ODR_ENCODE);
1573
1574     event_loop(&channel_list);
1575
1576     return 0;
1577 }
1578
1579 /*
1580  * Local variables:
1581  * c-basic-offset: 4
1582  * indent-tabs-mode: nil
1583  * End:
1584  * vim: shiftwidth=4 tabstop=8 expandtab
1585  */