src/zoom-c.c

   1 /*
   2  * Copyright (c) 2000-2004, Index Data
   3  * See the file LICENSE for details.
   4  *
   5  * $Id: zoom-c.c,v 1.22 2004-01-27 21:22:44 adam Exp $
   6  *
   7  * ZOOM layer for C, connections, result sets, queries.
   8  */
   9 #include <assert.h>
  10 #include <string.h>
  11 #include "zoom-p.h"
  12
  13 #include <yaz/yaz-util.h>
  14 #include <yaz/xmalloc.h>
  15 #include <yaz/otherinfo.h>
  16 #include <yaz/log.h>
  17 #include <yaz/pquery.h>
  18 #include <yaz/marcdisp.h>
  19 #include <yaz/diagbib1.h>
  20 #include <yaz/charneg.h>
  21 #include <yaz/ill.h>
  22 #include <yaz/srw.h>
  23
  24 #if HAVE_SYS_POLL_H
  25 #include <sys/poll.h>
  26 #endif
  27
  28 typedef enum {
  29     zoom_pending,
  30     zoom_complete
  31 } zoom_ret;
  32
  33 static zoom_ret ZOOM_connection_send_init (ZOOM_connection c);
  34 static zoom_ret do_write_ex (ZOOM_connection c, char *buf_out, int len_out);
  35
  36 static ZOOM_Event ZOOM_Event_create (int kind)
  37 {
  38     ZOOM_Event event = (ZOOM_Event) xmalloc (sizeof(*event));
  39     event->kind = kind;
  40     event->next = 0;
  41     event->prev = 0;
  42     return event;
  43 }
  44
  45 static void ZOOM_Event_destroy (ZOOM_Event event)
  46 {
  47     xfree (event);
  48 }
  49
  50 static void ZOOM_connection_put_event (ZOOM_connection c, ZOOM_Event event)
  51 {
  52     if (c->m_queue_back)
  53     {
  54         c->m_queue_back->prev = event;
  55         assert (c->m_queue_front);
  56     }
  57     else
  58     {
  59         assert (!c->m_queue_front);
  60         c->m_queue_front = event;
  61     }
  62     event->next = c->m_queue_back;
  63     event->prev = 0;
  64     c->m_queue_back = event;
  65 }
  66
  67 static ZOOM_Event ZOOM_connection_get_event(ZOOM_connection c)
  68 {
  69     ZOOM_Event event = c->m_queue_front;
  70     if (!event)
  71     {
  72         c->last_event = ZOOM_EVENT_NONE;
  73         return 0;
  74     }
  75     assert (c->m_queue_back);
  76     c->m_queue_front = event->prev;
  77     if (c->m_queue_front)
  78     {
  79         assert (c->m_queue_back);
  80         c->m_queue_front->next = 0;
  81     }
  82     else
  83         c->m_queue_back = 0;
  84     c->last_event = event->kind;
  85     return event;
  86 }
  87
  88
  89 static void set_dset_error (ZOOM_connection c, int error,
  90                             const char *dset,
  91                             const char *addinfo, const char *addinfo2)
  92 {
  93     char *cp;
  94     xfree (c->addinfo);
  95     c->addinfo = 0;
  96     c->error = error;
  97     if (c->diagset && strcmp(dset, c->diagset))
  98     {
  99         xfree(c->diagset);
 100         c->diagset = xstrdup(dset);
 101         /* remove integer part from SRW diagset .. */
 102         if ((cp = strrchr(c->diagset, '/')))
 103            *cp = '\0';
 104     }
 105     if (addinfo && addinfo2)
 106     {
 107         c->addinfo = xmalloc(strlen(addinfo) + strlen(addinfo2) + 2);
 108         strcpy(c->addinfo, addinfo);
 109         strcat(c->addinfo, addinfo2);
 110     }
 111     else if (addinfo)
 112         c->addinfo = xstrdup(addinfo);
 113     if (error)
 114         yaz_log(LOG_DEBUG, "Error %s %s:%d %s %s",
 115                 c->host_port ? c->host_port : "<>", dset, error,
 116                 addinfo ? addinfo : "",
 117                 addinfo2 ? addinfo2 : "");
 118 }
 119
 120 #if HAVE_XML2
 121 static void set_HTTP_error (ZOOM_connection c, int error,
 122                             const char *addinfo, const char *addinfo2)
 123 {
 124     set_dset_error(c, error, "HTTP", addinfo, addinfo2);
 125 }
 126 #endif
 127
 128 static void set_ZOOM_error (ZOOM_connection c, int error,
 129                             const char *addinfo)
 130 {
 131     set_dset_error(c, error, "ZOOM", addinfo, 0);
 132 }
 133
 134 static void clear_error (ZOOM_connection c)
 135 {
 136
 137     switch (c->error)
 138     {
 139     case ZOOM_ERROR_CONNECT:
 140     case ZOOM_ERROR_MEMORY:
 141     case ZOOM_ERROR_DECODE:
 142     case ZOOM_ERROR_CONNECTION_LOST:
 143     case ZOOM_ERROR_INIT:
 144     case ZOOM_ERROR_INTERNAL:
 145     case ZOOM_ERROR_UNSUPPORTED_PROTOCOL:
 146         break;
 147     default:
 148         set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 149     }
 150 }
 151
 152 ZOOM_task ZOOM_connection_add_task (ZOOM_connection c, int which)
 153 {
 154     ZOOM_task *taskp = &c->tasks;
 155     while (*taskp)
 156         taskp = &(*taskp)->next;
 157     *taskp = (ZOOM_task) xmalloc (sizeof(**taskp));
 158     (*taskp)->running = 0;
 159     (*taskp)->which = which;
 160     (*taskp)->next = 0;
 161     clear_error (c);
 162     return *taskp;
 163 }
 164
 165 ZOOM_task ZOOM_connection_insert_task (ZOOM_connection c, int which)
 166 {
 167     ZOOM_task task = (ZOOM_task) xmalloc (sizeof(*task));
 168
 169     task->next = c->tasks;
 170     c->tasks = task;
 171
 172     task->running = 0;
 173     task->which = which;
 174     clear_error (c);
 175     return task;
 176 }
 177
 178 void ZOOM_connection_remove_task (ZOOM_connection c)
 179 {
 180     ZOOM_task task = c->tasks;
 181
 182     if (task)
 183     {
 184         c->tasks = task->next;
 185         switch (task->which)
 186         {
 187         case ZOOM_TASK_SEARCH:
 188
 189             ZOOM_resultset_destroy (task->u.search.resultset);
 190             break;
 191         case ZOOM_TASK_RETRIEVE:
 192             ZOOM_resultset_destroy (task->u.retrieve.resultset);
 193             break;
 194         case ZOOM_TASK_CONNECT:
 195             break;
 196         case ZOOM_TASK_SCAN:
 197             ZOOM_scanset_destroy (task->u.scan.scan);
 198             break;
 199         case ZOOM_TASK_PACKAGE:
 200             ZOOM_package_destroy (task->u.package);
 201             break;
 202         default:
 203             assert (0);
 204         }
 205         xfree (task);
 206     }
 207 }
 208
 209 static int ZOOM_connection_exec_task (ZOOM_connection c);
 210
 211 void ZOOM_connection_remove_tasks (ZOOM_connection c)
 212 {
 213     while (c->tasks)
 214         ZOOM_connection_remove_task(c);
 215 }
 216
 217 static ZOOM_record record_cache_lookup (ZOOM_resultset r, int pos);
 218
 219 ZOOM_API(ZOOM_connection)
 220 ZOOM_connection_create (ZOOM_options options)
 221 {
 222     ZOOM_connection c = (ZOOM_connection) xmalloc (sizeof(*c));
 223
 224     c->proto = PROTO_Z3950;
 225     c->cs = 0;
 226     c->mask = 0;
 227     c->reconnect_ok = 0;
 228     c->state = STATE_IDLE;
 229     c->addinfo = 0;
 230     c->diagset = 0;
 231     set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 232     c->buf_in = 0;
 233     c->len_in = 0;
 234     c->buf_out = 0;
 235     c->len_out = 0;
 236     c->resultsets = 0;
 237
 238     c->options = ZOOM_options_create_with_parent(options);
 239
 240     c->host_port = 0;
 241     c->path = 0;
 242     c->proxy = 0;
 243
 244     c->charset = c->lang = 0;
 245
 246     c->cookie_out = 0;
 247     c->cookie_in = 0;
 248     c->client_IP = 0;
 249     c->tasks = 0;
 250
 251     c->odr_in = odr_createmem (ODR_DECODE);
 252     c->odr_out = odr_createmem (ODR_ENCODE);
 253
 254     c->async = 0;
 255     c->support_named_resultsets = 0;
 256     c->last_event = ZOOM_EVENT_NONE;
 257
 258     c->m_queue_front = 0;
 259     c->m_queue_back = 0;
 260     return c;
 261 }
 262
 263 /* set database names. Take local databases (if set); otherwise
 264    take databases given in ZURL (if set); otherwise use Default */
 265 static char **set_DatabaseNames (ZOOM_connection con, ZOOM_options options,
 266                                  int *num)
 267 {
 268     char **databaseNames;
 269     const char *c;
 270     int no = 2;
 271     const char *cp = ZOOM_options_get (options, "databaseName");
 272
 273     if (!cp || !*cp)
 274     {
 275         if (strncmp (con->host_port, "unix:", 5) == 0)
 276             cp = strchr (con->host_port+5, ':');
 277         else
 278             cp = strchr (con->host_port, '/');
 279         if (cp)
 280             cp++;
 281     }
 282     if (cp)
 283     {
 284         c = cp;
 285         while ((c = strchr(c, '+')))
 286         {
 287             c++;
 288             no++;
 289         }
 290     }
 291     else
 292         cp = "Default";
 293     databaseNames = (char**)
 294         odr_malloc (con->odr_out, no * sizeof(*databaseNames));
 295     no = 0;
 296     while (*cp)
 297     {
 298         c = strchr (cp, '+');
 299         if (!c)
 300             c = cp + strlen(cp);
 301         else if (c == cp)
 302         {
 303             cp++;
 304             continue;
 305         }
 306         /* cp ptr to first char of db name, c is char
 307            following db name */
 308         databaseNames[no] = (char*) odr_malloc (con->odr_out, 1+c-cp);
 309         memcpy (databaseNames[no], cp, c-cp);
 310         databaseNames[no++][c-cp] = '\0';
 311         cp = c;
 312         if (*cp)
 313             cp++;
 314     }
 315     databaseNames[no] = NULL;
 316     *num = no;
 317     return databaseNames;
 318 }
 319
 320 ZOOM_API(ZOOM_connection)
 321 ZOOM_connection_new (const char *host, int portnum)
 322 {
 323     ZOOM_connection c = ZOOM_connection_create (0);
 324
 325     ZOOM_connection_connect (c, host, portnum);
 326     return c;
 327 }
 328
 329 ZOOM_API(void)
 330 ZOOM_connection_connect(ZOOM_connection c,
 331                         const char *host, int portnum)
 332 {
 333     const char *val;
 334     ZOOM_task task;
 335
 336     if (c->cs)
 337     {
 338         yaz_log (LOG_DEBUG, "reconnect");
 339         c->reconnect_ok = 1;
 340         return;
 341     }
 342     yaz_log(LOG_DEBUG, "connect");
 343     xfree (c->proxy);
 344     val = ZOOM_options_get (c->options, "proxy");
 345     if (val && *val)
 346         c->proxy = xstrdup (val);
 347     else
 348         c->proxy = 0;
 349
 350     xfree (c->charset);
 351     val = ZOOM_options_get (c->options, "charset");
 352     if (val && *val)
 353         c->charset = xstrdup (val);
 354     else
 355         c->charset = 0;
 356
 357     xfree (c->lang);
 358     val = ZOOM_options_get (c->options, "lang");
 359     if (val && *val)
 360         c->lang = xstrdup (val);
 361     else
 362         c->lang = 0;
 363
 364     xfree (c->host_port);
 365     if (portnum)
 366     {
 367         char hostn[128];
 368         sprintf (hostn, "%.80s:%d", host, portnum);
 369         c->host_port = xstrdup(hostn);
 370     }
 371     else
 372         c->host_port = xstrdup(host);
 373
 374     ZOOM_options_set(c->options, "host", c->host_port);
 375
 376     val = ZOOM_options_get (c->options, "cookie");
 377     if (val && *val)
 378         c->cookie_out = xstrdup (val);
 379
 380     val = ZOOM_options_get (c->options, "clientIP");
 381     if (val && *val)
 382         c->client_IP = xstrdup (val);
 383
 384     c->async = ZOOM_options_get_bool (c->options, "async", 0);
 385
 386     set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 387
 388     task = ZOOM_connection_add_task (c, ZOOM_TASK_CONNECT);
 389
 390     if (!c->async)
 391     {
 392         while (ZOOM_event (1, &c))
 393             ;
 394     }
 395 }
 396
 397 ZOOM_API(ZOOM_query)
 398 ZOOM_query_create(void)
 399 {
 400     ZOOM_query s = (ZOOM_query) xmalloc (sizeof(*s));
 401
 402     s->refcount = 1;
 403     s->z_query = 0;
 404     s->sort_spec = 0;
 405     s->odr = odr_createmem (ODR_ENCODE);
 406     s->query_string = 0;
 407
 408     return s;
 409 }
 410
 411 ZOOM_API(void)
 412 ZOOM_query_destroy(ZOOM_query s)
 413 {
 414     if (!s)
 415         return;
 416
 417     (s->refcount)--;
 418     yaz_log (LOG_DEBUG, "ZOOM_query_destroy count=%d", s->refcount);
 419     if (s->refcount == 0)
 420     {
 421         odr_destroy (s->odr);
 422         xfree (s);
 423     }
 424 }
 425
 426 ZOOM_API(int)
 427 ZOOM_query_prefix(ZOOM_query s, const char *str)
 428 {
 429     s->query_string = odr_strdup(s->odr, str);
 430     s->z_query = (Z_Query *) odr_malloc (s->odr, sizeof(*s->z_query));
 431     s->z_query->which = Z_Query_type_1;
 432     s->z_query->u.type_1 =  p_query_rpn(s->odr, PROTO_Z3950, str);
 433     if (!s->z_query->u.type_1)
 434         return -1;
 435     return 0;
 436 }
 437
 438 ZOOM_API(int)
 439 ZOOM_query_cql(ZOOM_query s, const char *str)
 440 {
 441     Z_External *ext;
 442
 443     s->query_string = odr_strdup(s->odr, str);
 444
 445     ext = (Z_External *) odr_malloc(s->odr, sizeof(*ext));
 446     ext->direct_reference = odr_getoidbystr(s->odr, "1.2.840.10003.16.2");
 447     ext->indirect_reference = 0;
 448     ext->descriptor = 0;
 449     ext->which = Z_External_CQL;
 450     ext->u.cql = s->query_string;
 451
 452     s->z_query = (Z_Query *) odr_malloc (s->odr, sizeof(*s->z_query));
 453     s->z_query->which = Z_Query_type_104;
 454     s->z_query->u.type_104 =  ext;
 455
 456     return 0;
 457 }
 458
 459 ZOOM_API(int)
 460 ZOOM_query_sortby(ZOOM_query s, const char *criteria)
 461 {
 462     s->sort_spec = yaz_sort_spec (s->odr, criteria);
 463     if (!s->sort_spec)
 464         return -1;
 465     return 0;
 466 }
 467
 468 static zoom_ret do_write(ZOOM_connection c);
 469
 470 ZOOM_API(void)
 471 ZOOM_connection_destroy(ZOOM_connection c)
 472 {
 473     ZOOM_resultset r;
 474     if (!c)
 475         return;
 476     if (c->cs)
 477         cs_close (c->cs);
 478     for (r = c->resultsets; r; r = r->next)
 479         r->connection = 0;
 480
 481     xfree (c->buf_in);
 482     xfree (c->addinfo);
 483     xfree (c->diagset);
 484     odr_destroy (c->odr_in);
 485     odr_destroy (c->odr_out);
 486     ZOOM_options_destroy (c->options);
 487     ZOOM_connection_remove_tasks (c);
 488     xfree (c->host_port);
 489     xfree (c->path);
 490     xfree (c->proxy);
 491     xfree (c->charset);
 492     xfree (c->lang);
 493     xfree (c->cookie_out);
 494     xfree (c->cookie_in);
 495     xfree (c->client_IP);
 496     xfree (c);
 497 }
 498
 499 void ZOOM_resultset_addref (ZOOM_resultset r)
 500 {
 501     if (r)
 502     {
 503         (r->refcount)++;
 504         yaz_log (LOG_DEBUG, "ZOOM_resultset_addref r=%p count=%d",
 505                  r, r->refcount);
 506     }
 507 }
 508 ZOOM_resultset ZOOM_resultset_create ()
 509 {
 510     ZOOM_resultset r = (ZOOM_resultset) xmalloc (sizeof(*r));
 511
 512     yaz_log (LOG_DEBUG, "ZOOM_resultset_create r = %p", r);
 513     r->refcount = 1;
 514     r->size = 0;
 515     r->odr = odr_createmem (ODR_ENCODE);
 516     r->start = 0;
 517     r->piggyback = 1;
 518     r->setname = 0;
 519     r->schema = 0;
 520     r->count = 0;
 521     r->step = 0;
 522     r->record_cache = 0;
 523     r->r_sort_spec = 0;
 524     r->query = 0;
 525     r->connection = 0;
 526     r->next = 0;
 527     return r;
 528 }
 529
 530 ZOOM_API(ZOOM_resultset)
 531 ZOOM_connection_search_pqf(ZOOM_connection c, const char *q)
 532 {
 533     ZOOM_resultset r;
 534     ZOOM_query s = ZOOM_query_create();
 535
 536     ZOOM_query_prefix (s, q);
 537
 538     r = ZOOM_connection_search (c, s);
 539     ZOOM_query_destroy (s);
 540     return r;
 541 }
 542
 543 ZOOM_API(ZOOM_resultset)
 544 ZOOM_connection_search(ZOOM_connection c, ZOOM_query q)
 545 {
 546     ZOOM_resultset r = ZOOM_resultset_create ();
 547     ZOOM_task task;
 548     const char *cp;
 549
 550     r->r_sort_spec = q->sort_spec;
 551     r->query = q;
 552
 553     r->options = ZOOM_options_create_with_parent(c->options);
 554
 555     r->start = ZOOM_options_get_int(r->options, "start", 0);
 556     r->count = ZOOM_options_get_int(r->options, "count", 0);
 557     {
 558         /* If "presentChunk" is defined use that; otherwise "step" */
 559         const char *cp = ZOOM_options_get (r->options, "presentChunk");
 560         r->step = ZOOM_options_get_int(r->options,
 561                                        (cp != 0 ? "presentChunk": "step"), 0);
 562     }
 563     r->piggyback = ZOOM_options_get_bool (r->options, "piggyback", 1);
 564     cp = ZOOM_options_get (r->options, "setname");
 565     if (cp)
 566         r->setname = xstrdup(cp);
 567     cp = ZOOM_options_get (r->options, "schema");
 568     if (cp)
 569         r->schema = xstrdup(cp);
 570
 571     r->connection = c;
 572
 573     r->next = c->resultsets;
 574     c->resultsets = r;
 575
 576     if (c->host_port && c->proto == PROTO_HTTP)
 577     {
 578         if (!c->cs)
 579         {
 580             yaz_log(LOG_DEBUG, "NO COMSTACK");
 581             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 582         }
 583         else
 584         {
 585             yaz_log(LOG_DEBUG, "PREPARE FOR RECONNECT");
 586             c->reconnect_ok = 1;
 587         }
 588     }
 589
 590     task = ZOOM_connection_add_task (c, ZOOM_TASK_SEARCH);
 591     task->u.search.resultset = r;
 592     ZOOM_resultset_addref (r);
 593
 594     (q->refcount)++;
 595
 596     if (!c->async)
 597     {
 598         while (ZOOM_event (1, &c))
 599             ;
 600     }
 601     return r;
 602 }
 603
 604 ZOOM_API(void)
 605 ZOOM_resultset_destroy(ZOOM_resultset r)
 606 {
 607     if (!r)
 608         return;
 609     (r->refcount)--;
 610     yaz_log (LOG_DEBUG, "ZOOM_resultset_destroy r = %p count=%d",
 611              r, r->refcount);
 612     if (r->refcount == 0)
 613     {
 614         ZOOM_record_cache rc;
 615
 616         for (rc = r->record_cache; rc; rc = rc->next)
 617         {
 618             if (rc->rec.wrbuf_marc)
 619                 wrbuf_free (rc->rec.wrbuf_marc, 1);
 620             if (rc->rec.wrbuf_iconv)
 621                 wrbuf_free (rc->rec.wrbuf_iconv, 1);
 622             if (rc->rec.wrbuf_opac)
 623                 wrbuf_free (rc->rec.wrbuf_opac, 1);
 624         }
 625         if (r->connection)
 626         {
 627             /* remove ourselves from the resultsets in connection */
 628             ZOOM_resultset *rp = &r->connection->resultsets;
 629             while (1)
 630             {
 631                 assert (*rp);   /* we must be in this list!! */
 632                 if (*rp == r)
 633                 {   /* OK, we're here - take us out of it */
 634                     *rp = (*rp)->next;
 635                     break;
 636                 }
 637                 rp = &(*rp)->next;
 638             }
 639         }
 640         ZOOM_query_destroy (r->query);
 641         ZOOM_options_destroy (r->options);
 642         odr_destroy (r->odr);
 643         xfree (r->setname);
 644         xfree (r->schema);
 645         xfree (r);
 646     }
 647 }
 648
 649 ZOOM_API(size_t)
 650 ZOOM_resultset_size (ZOOM_resultset r)
 651 {
 652     return r->size;
 653 }
 654
 655 static void do_close (ZOOM_connection c)
 656 {
 657     if (c->cs)
 658         cs_close(c->cs);
 659     c->cs = 0;
 660     c->mask = 0;
 661     c->state = STATE_IDLE;
 662 }
 663
 664 static void ZOOM_resultset_retrieve (ZOOM_resultset r,
 665                                      int force_sync, int start, int count)
 666 {
 667     ZOOM_task task;
 668     ZOOM_connection c;
 669     const char *cp;
 670
 671     if (!r)
 672         return;
 673     c = r->connection;
 674     if (!c)
 675         return;
 676
 677     if (c->host_port && c->proto == PROTO_HTTP)
 678     {
 679         if (!c->cs)
 680         {
 681             yaz_log(LOG_DEBUG, "NO COMSTACK");
 682             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 683         }
 684         else
 685         {
 686             yaz_log(LOG_DEBUG, "PREPARE FOR RECONNECT");
 687             c->reconnect_ok = 1;
 688         }
 689     }
 690     task = ZOOM_connection_add_task (c, ZOOM_TASK_RETRIEVE);
 691     task->u.retrieve.resultset = r;
 692     task->u.retrieve.start = start;
 693     task->u.retrieve.count = count;
 694
 695     cp = ZOOM_options_get (r->options, "schema");
 696     if (cp)
 697     {
 698         if (!r->schema || strcmp(r->schema, cp))
 699         {
 700             xfree(r->schema);
 701             r->schema = xstrdup(cp);
 702         }
 703     }
 704
 705     ZOOM_resultset_addref (r);
 706
 707     if (!r->connection->async || force_sync)
 708         while (r->connection && ZOOM_event (1, &r->connection))
 709             ;
 710 }
 711
 712 ZOOM_API(void)
 713 ZOOM_resultset_records (ZOOM_resultset r, ZOOM_record *recs,
 714                         size_t start, size_t count)
 715 {
 716     int force_present = 0;
 717
 718     if (!r)
 719         return ;
 720     if (count && recs)
 721         force_present = 1;
 722     ZOOM_resultset_retrieve (r, force_present, start, count);
 723     if (force_present)
 724     {
 725         size_t i;
 726         for (i = 0; i< count; i++)
 727             recs[i] = ZOOM_resultset_record_immediate (r, i+start);
 728     }
 729 }
 730
 731 static zoom_ret do_connect (ZOOM_connection c)
 732 {
 733     void *add;
 734     const char *effective_host;
 735
 736     if (c->proxy)
 737         effective_host = c->proxy;
 738     else
 739         effective_host = c->host_port;
 740
 741     yaz_log (LOG_DEBUG, "do_connect host=%s", effective_host);
 742
 743     assert (!c->cs);
 744     c->cs = cs_create_host (effective_host, 0, &add);
 745
 746     if (c->cs && c->cs->protocol == PROTO_HTTP)
 747     {
 748 #if HAVE_XML2
 749         const char *path = 0;
 750
 751         c->proto = PROTO_HTTP;
 752         cs_get_host_args(c->host_port, &path);
 753         xfree(c->path);
 754         c->path = xmalloc(strlen(path)+2);
 755         c->path[0] = '/';
 756         strcpy (c->path+1, path);
 757 #else
 758         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_PROTOCOL, "SRW");
 759         do_close(c);
 760         return zoom_complete;
 761 #endif
 762     }
 763     if (c->cs)
 764     {
 765         int ret = cs_connect (c->cs, add);
 766         if (ret == 0)
 767         {
 768             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
 769             ZOOM_connection_put_event(c, event);
 770             if (c->proto == PROTO_Z3950)
 771                 ZOOM_connection_send_init(c);
 772             else
 773             {
 774                 /* no init request for SRW .. */
 775                 assert (c->tasks->which == ZOOM_TASK_CONNECT);
 776                 ZOOM_connection_remove_task (c);
 777                 c->mask = 0;
 778                 ZOOM_connection_exec_task (c);
 779             }
 780             c->state = STATE_ESTABLISHED;
 781             return zoom_pending;
 782         }
 783         else if (ret > 0)
 784         {
 785             c->state = STATE_CONNECTING;
 786             c->mask = ZOOM_SELECT_EXCEPT;
 787             if (c->cs->io_pending & CS_WANT_WRITE)
 788                 c->mask += ZOOM_SELECT_WRITE;
 789             if (c->cs->io_pending & CS_WANT_READ)
 790                 c->mask += ZOOM_SELECT_READ;
 791             return zoom_pending;
 792         }
 793     }
 794     c->state = STATE_IDLE;
 795     set_ZOOM_error(c, ZOOM_ERROR_CONNECT, effective_host);
 796     return zoom_complete;
 797 }
 798
 799 int z3950_connection_socket(ZOOM_connection c)
 800 {
 801     if (c->cs)
 802         return cs_fileno(c->cs);
 803     return -1;
 804 }
 805
 806 int z3950_connection_mask(ZOOM_connection c)
 807 {
 808     if (c->cs)
 809         return c->mask;
 810     return 0;
 811 }
 812
 813 static void otherInfo_attach (ZOOM_connection c, Z_APDU *a, ODR out)
 814 {
 815     int i;
 816     for (i = 0; i<200; i++)
 817     {
 818         size_t len;
 819         Z_OtherInformation **oi;
 820         char buf[80];
 821         const char *val;
 822         const char *cp;
 823         int oidval;
 824
 825         sprintf (buf, "otherInfo%d", i);
 826         val = ZOOM_options_get (c->options, buf);
 827         if (!val)
 828             break;
 829         cp = strchr (val, ':');
 830         if (!cp)
 831             continue;
 832         len = cp - val;
 833         if (len >= sizeof(buf))
 834             len = sizeof(buf)-1;
 835         memcpy (buf, val, len);
 836         buf[len] = '\0';
 837         oidval = oid_getvalbyname (buf);
 838         if (oidval == VAL_NONE)
 839             continue;
 840
 841         yaz_oi_APDU(a, &oi);
 842         yaz_oi_set_string_oidval(oi, out, oidval, 1, cp+1);
 843     }
 844 }
 845
 846 static int encode_APDU(ZOOM_connection c, Z_APDU *a, ODR out)
 847 {
 848     assert (a);
 849     if (c->cookie_out)
 850     {
 851         Z_OtherInformation **oi;
 852         yaz_oi_APDU(a, &oi);
 853         yaz_oi_set_string_oidval(oi, out, VAL_COOKIE, 1, c->cookie_out);
 854     }
 855     if (c->client_IP)
 856     {
 857         Z_OtherInformation **oi;
 858         yaz_oi_APDU(a, &oi);
 859         yaz_oi_set_string_oidval(oi, out, VAL_CLIENT_IP, 1, c->client_IP);
 860     }
 861     otherInfo_attach (c, a, out);
 862     if (!z_APDU(out, &a, 0, 0))
 863     {
 864         FILE *outf = fopen("/tmp/apdu.txt", "a");
 865         if (a && outf)
 866         {
 867             ODR odr_pr = odr_createmem(ODR_PRINT);
 868             fprintf (outf, "a=%p\n", a);
 869             odr_setprint(odr_pr, outf);
 870             z_APDU(odr_pr, &a, 0, 0);
 871             odr_destroy(odr_pr);
 872         }
 873         yaz_log (LOG_DEBUG, "encoding failed");
 874         set_ZOOM_error(c, ZOOM_ERROR_ENCODE, 0);
 875         odr_reset(out);
 876         return -1;
 877     }
 878
 879     return 0;
 880 }
 881
 882 static zoom_ret send_APDU (ZOOM_connection c, Z_APDU *a)
 883 {
 884     ZOOM_Event event;
 885     assert (a);
 886     if (encode_APDU(c, a, c->odr_out))
 887         return zoom_complete;
 888     yaz_log(LOG_DEBUG, "send APDU type=%d", a->which);
 889     c->buf_out = odr_getbuf(c->odr_out, &c->len_out, 0);
 890     event = ZOOM_Event_create (ZOOM_EVENT_SEND_APDU);
 891     ZOOM_connection_put_event (c, event);
 892     odr_reset(c->odr_out);
 893     return do_write (c);
 894 }
 895
 896 /* returns 1 if PDU was sent OK (still pending )
 897            0 if PDU was not sent OK (nothing to wait for)
 898 */
 899
 900 static zoom_ret ZOOM_connection_send_init (ZOOM_connection c)
 901 {
 902     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_initRequest);
 903     Z_InitRequest *ireq = apdu->u.initRequest;
 904     Z_IdAuthentication *auth = (Z_IdAuthentication *)
 905         odr_malloc(c->odr_out, sizeof(*auth));
 906     const char *auth_groupId = ZOOM_options_get (c->options, "group");
 907     const char *auth_userId = ZOOM_options_get (c->options, "user");
 908     const char *auth_password = ZOOM_options_get (c->options, "password");
 909     char *version;
 910
 911     /* support the pass for backwards compatibility */
 912     if (!auth_password)
 913         auth_password = ZOOM_options_get (c->options, "pass");
 914
 915     ODR_MASK_SET(ireq->options, Z_Options_search);
 916     ODR_MASK_SET(ireq->options, Z_Options_present);
 917     ODR_MASK_SET(ireq->options, Z_Options_scan);
 918     ODR_MASK_SET(ireq->options, Z_Options_sort);
 919     ODR_MASK_SET(ireq->options, Z_Options_extendedServices);
 920     ODR_MASK_SET(ireq->options, Z_Options_namedResultSets);
 921
 922     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_1);
 923     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_2);
 924     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_3);
 925
 926     /* Index Data's Z39.50 Implementor Id is 81 */
 927     ireq->implementationId = odr_prepend(c->odr_out,
 928         ZOOM_options_get(c->options, "implementationId"),
 929         odr_prepend(c->odr_out, "81", ireq->implementationId));
 930
 931     ireq->implementationName = odr_prepend(c->odr_out,
 932         ZOOM_options_get(c->options, "implementationName"),
 933         odr_prepend(c->odr_out, "ZOOM-C", ireq->implementationName));
 934
 935     version = odr_strdup(c->odr_out, "$Revision: 1.22 $");
 936     if (strlen(version) > 10)   /* check for unexpanded CVS strings */
 937         version[strlen(version)-2] = '\0';
 938     ireq->implementationVersion = odr_prepend(c->odr_out,
 939         ZOOM_options_get(c->options, "implementationVersion"),
 940         odr_prepend(c->odr_out, &version[11], ireq->implementationVersion));
 941
 942     *ireq->maximumRecordSize =
 943         ZOOM_options_get_int (c->options, "maximumRecordSize", 1024*1024);
 944     *ireq->preferredMessageSize =
 945         ZOOM_options_get_int (c->options, "preferredMessageSize", 1024*1024);
 946
 947     if (auth_groupId || auth_password)
 948     {
 949         Z_IdPass *pass = (Z_IdPass *) odr_malloc(c->odr_out, sizeof(*pass));
 950         int i = 0;
 951         pass->groupId = 0;
 952         if (auth_groupId && *auth_groupId)
 953         {
 954             pass->groupId = (char *)
 955                 odr_malloc(c->odr_out, strlen(auth_groupId)+1);
 956             strcpy(pass->groupId, auth_groupId);
 957             i++;
 958         }
 959         pass->userId = 0;
 960         if (auth_userId && *auth_userId)
 961         {
 962             pass->userId = (char *)
 963                 odr_malloc(c->odr_out, strlen(auth_userId)+1);
 964             strcpy(pass->userId, auth_userId);
 965             i++;
 966         }
 967         pass->password = 0;
 968         if (auth_password && *auth_password)
 969         {
 970             pass->password = (char *)
 971                 odr_malloc(c->odr_out, strlen(auth_password)+1);
 972             strcpy(pass->password, auth_password);
 973             i++;
 974         }
 975         if (i)
 976         {
 977             auth->which = Z_IdAuthentication_idPass;
 978             auth->u.idPass = pass;
 979             ireq->idAuthentication = auth;
 980         }
 981     }
 982     else if (auth_userId)
 983     {
 984         auth->which = Z_IdAuthentication_open;
 985         auth->u.open = (char *)
 986             odr_malloc(c->odr_out, strlen(auth_userId)+1);
 987         strcpy(auth->u.open, auth_userId);
 988         ireq->idAuthentication = auth;
 989     }
 990     if (c->proxy)
 991         yaz_oi_set_string_oidval(&ireq->otherInfo, c->odr_out,
 992                                  VAL_PROXY, 1, c->host_port);
 993     if (c->charset||c->lang)
 994     {
 995         Z_OtherInformation **oi;
 996         Z_OtherInformationUnit *oi_unit;
 997
 998         yaz_oi_APDU(apdu, &oi);
 999
1000         if ((oi_unit = yaz_oi_update(oi, c->odr_out, NULL, 0, 0)))
1001         {
1002             ODR_MASK_SET(ireq->options, Z_Options_negotiationModel);
1003
1004             oi_unit->which = Z_OtherInfo_externallyDefinedInfo;
1005             oi_unit->information.externallyDefinedInfo =
1006                 yaz_set_proposal_charneg
1007                 (c->odr_out,
1008                  (const char **)&c->charset, (c->charset) ? 1:0,
1009                  (const char **)&c->lang, (c->lang) ? 1:0, 1);
1010         }
1011     }
1012     assert (apdu);
1013     return send_APDU (c, apdu);
1014 }
1015
1016 #if HAVE_XML2
1017 static zoom_ret send_srw (ZOOM_connection c, Z_SRW_PDU *sr)
1018 {
1019     char ctype[50];
1020     Z_SOAP_Handler h[2] = {
1021         {"http://www.loc.gov/zing/srw/", 0, (Z_SOAP_fun) yaz_srw_codec},
1022         {0, 0, 0}
1023     };
1024     ODR o = odr_createmem(ODR_ENCODE);
1025     int ret;
1026     Z_SOAP *p = odr_malloc(o, sizeof(*p));
1027     Z_GDU *gdu;
1028     ZOOM_Event event;
1029
1030     gdu = z_get_HTTP_Request(c->odr_out);
1031     gdu->u.HTTP_Request->path = c->path;
1032
1033     if (c->host_port)
1034     {
1035         const char *cp0 = strstr(c->host_port, "://");
1036         const char *cp1 = 0;
1037         if (cp0)
1038             cp0 = cp0+3;
1039         else
1040             cp0 = c->host_port;
1041
1042         cp1 = strchr(cp0, '/');
1043         if (!cp1)
1044             cp1 = cp0+strlen(cp0);
1045
1046         if (cp0 && cp1)
1047         {
1048             char *h = odr_malloc(c->odr_out, cp1 - cp0 + 1);
1049             memcpy (h, cp0, cp1 - cp0);
1050             h[cp1-cp0] = '\0';
1051             z_HTTP_header_add(c->odr_out, &gdu->u.HTTP_Request->headers,
1052                               "Host", h);
1053         }
1054     }
1055
1056     strcpy(ctype, "text/xml");
1057     if (c->charset && strlen(c->charset) < 20)
1058     {
1059         strcat(ctype, "; charset=");
1060         strcat(ctype, c->charset);
1061     }
1062     z_HTTP_header_add(c->odr_out, &gdu->u.HTTP_Request->headers,
1063                       "Content-Type", ctype);
1064     z_HTTP_header_add(c->odr_out, &gdu->u.HTTP_Request->headers,
1065                       "SOAPAction", "\"\"");
1066     p->which = Z_SOAP_generic;
1067     p->u.generic = odr_malloc(o, sizeof(*p->u.generic));
1068     p->u.generic->no = 0;
1069     p->u.generic->ns = 0;
1070     p->u.generic->p = sr;
1071     p->ns = "http://schemas.xmlsoap.org/soap/envelope/";
1072
1073     ret = z_soap_codec_enc(o, &p,
1074                            &gdu->u.HTTP_Request->content_buf,
1075                            &gdu->u.HTTP_Request->content_len, h,
1076                            c->charset);
1077
1078     if (!z_GDU(c->odr_out, &gdu, 0, 0))
1079         return zoom_complete;
1080     c->buf_out = odr_getbuf(c->odr_out, &c->len_out, 0);
1081
1082     odr_destroy(o);
1083
1084     event = ZOOM_Event_create (ZOOM_EVENT_SEND_APDU);
1085     ZOOM_connection_put_event (c, event);
1086     odr_reset(c->odr_out);
1087     return do_write (c);
1088 }
1089 #endif
1090
1091 #if HAVE_XML2
1092 static zoom_ret ZOOM_connection_srw_send_search(ZOOM_connection c)
1093 {
1094     int i;
1095     ZOOM_resultset resultset = 0;
1096     Z_SRW_PDU *sr = 0;
1097     const char *recordPacking = 0;
1098
1099     if (c->error)                  /* don't continue on error */
1100         return zoom_complete;
1101     assert (c->tasks);
1102     if (c->tasks->which == ZOOM_TASK_SEARCH)
1103     {
1104         resultset = c->tasks->u.search.resultset;
1105         resultset->setname = xstrdup ("default");
1106         ZOOM_options_set (resultset->options, "setname", resultset->setname);
1107     }
1108     else if(c->tasks->which == ZOOM_TASK_RETRIEVE)
1109     {
1110         resultset = c->tasks->u.retrieve.resultset;
1111
1112         resultset->start = c->tasks->u.retrieve.start;
1113         resultset->count = c->tasks->u.retrieve.count;
1114
1115         if (resultset->start >= resultset->size)
1116             return zoom_complete;
1117         if (resultset->start + resultset->count > resultset->size)
1118             resultset->count = resultset->size - resultset->start;
1119
1120         for (i = 0; i<resultset->count; i++)
1121         {
1122             ZOOM_record rec =
1123                 record_cache_lookup (resultset, i + resultset->start);
1124             if (!rec)
1125                 break;
1126         }
1127         if (i == resultset->count)
1128             return zoom_complete;
1129     }
1130     assert(resultset->query);
1131
1132     sr = yaz_srw_get(c->odr_out, Z_SRW_searchRetrieve_request);
1133
1134     if (resultset->query->z_query->which == Z_Query_type_104
1135         && resultset->query->z_query->u.type_104->which == Z_External_CQL)
1136     {
1137
1138         sr->u.request->query_type = Z_SRW_query_type_cql;
1139         sr->u.request->query.cql =resultset->query->z_query->u.type_104->u.cql;
1140     }
1141     else if (resultset->query->z_query->which == Z_Query_type_1 &&
1142              resultset->query->z_query->u.type_1)
1143     {
1144         sr->u.request->query_type = Z_SRW_query_type_pqf;
1145         sr->u.request->query.pqf = resultset->query->query_string;
1146     }
1147     else
1148     {
1149         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_QUERY, 0);
1150         return zoom_complete;
1151     }
1152     sr->u.request->startRecord = odr_intdup (c->odr_out, resultset->start + 1);
1153     sr->u.request->maximumRecords = odr_intdup (
1154         c->odr_out, resultset->step>0 ? resultset->step : resultset->count);
1155     sr->u.request->recordSchema = resultset->schema;
1156
1157     recordPacking = ZOOM_resultset_option_get (resultset, "recordPacking");
1158
1159     if (recordPacking)
1160         sr->u.request->recordPacking = odr_strdup(c->odr_out, recordPacking);
1161
1162     return send_srw(c, sr);
1163 }
1164 #else
1165 static zoom_ret ZOOM_connection_srw_send_search(ZOOM_connection c)
1166 {
1167     return zoom_complete;
1168 }
1169 #endif
1170
1171 static zoom_ret ZOOM_connection_send_search (ZOOM_connection c)
1172 {
1173     ZOOM_resultset r;
1174     int lslb, ssub, mspn;
1175     const char *syntax;
1176     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_searchRequest);
1177     Z_SearchRequest *search_req = apdu->u.searchRequest;
1178     const char *elementSetName;
1179     const char *smallSetElementSetName;
1180     const char *mediumSetElementSetName;
1181
1182     assert (c->tasks);
1183     assert (c->tasks->which == ZOOM_TASK_SEARCH);
1184
1185     r = c->tasks->u.search.resultset;
1186
1187     elementSetName =
1188         ZOOM_options_get (r->options, "elementSetName");
1189     smallSetElementSetName  =
1190         ZOOM_options_get (r->options, "smallSetElementSetName");
1191     mediumSetElementSetName =
1192         ZOOM_options_get (r->options, "mediumSetElementSetName");
1193
1194     if (!smallSetElementSetName)
1195         smallSetElementSetName = elementSetName;
1196
1197     if (!mediumSetElementSetName)
1198         mediumSetElementSetName = elementSetName;
1199
1200     assert (r);
1201     assert (r->query);
1202
1203     /* prepare query for the search request */
1204     search_req->query = r->query->z_query;
1205
1206     search_req->databaseNames =
1207         set_DatabaseNames (c, r->options, &search_req->num_databaseNames);
1208
1209     /* get syntax (no need to provide unless piggyback is in effect) */
1210     syntax = ZOOM_options_get (r->options, "preferredRecordSyntax");
1211
1212     lslb = ZOOM_options_get_int (r->options, "largeSetLowerBound", -1);
1213     ssub = ZOOM_options_get_int (r->options, "smallSetUpperBound", -1);
1214     mspn = ZOOM_options_get_int (r->options, "mediumSetPresentNumber", -1);
1215     if (lslb != -1 && ssub != -1 && mspn != -1)
1216     {
1217         /* So're a Z39.50 expert? Let's hope you don't do sort */
1218         *search_req->largeSetLowerBound = lslb;
1219         *search_req->smallSetUpperBound = ssub;
1220         *search_req->mediumSetPresentNumber = mspn;
1221     }
1222     else if (r->start == 0 && r->count > 0
1223              && r->piggyback && !r->r_sort_spec && !r->schema)
1224     {
1225         /* Regular piggyback - do it unless we're going to do sort */
1226         *search_req->largeSetLowerBound = 2000000000;
1227         *search_req->smallSetUpperBound = 1;
1228         *search_req->mediumSetPresentNumber = r->step>0 ? r->step : r->count;
1229     }
1230     else
1231     {
1232         /* non-piggyback. Need not provide elementsets or syntaxes .. */
1233         smallSetElementSetName = 0;
1234         mediumSetElementSetName = 0;
1235         syntax = 0;
1236     }
1237     if (smallSetElementSetName && *smallSetElementSetName)
1238     {
1239         Z_ElementSetNames *esn = (Z_ElementSetNames *)
1240             odr_malloc (c->odr_out, sizeof(*esn));
1241
1242         esn->which = Z_ElementSetNames_generic;
1243         esn->u.generic = odr_strdup (c->odr_out, smallSetElementSetName);
1244         search_req->smallSetElementSetNames = esn;
1245     }
1246     if (mediumSetElementSetName && *mediumSetElementSetName)
1247     {
1248         Z_ElementSetNames *esn = (Z_ElementSetNames *)
1249             odr_malloc (c->odr_out, sizeof(*esn));
1250
1251         esn->which = Z_ElementSetNames_generic;
1252         esn->u.generic = odr_strdup (c->odr_out, mediumSetElementSetName);
1253         search_req->mediumSetElementSetNames = esn;
1254     }
1255     if (syntax)
1256         search_req->preferredRecordSyntax =
1257             yaz_str_to_z3950oid (c->odr_out, CLASS_RECSYN, syntax);
1258
1259     if (!r->setname)
1260     {
1261         if (c->support_named_resultsets)
1262         {
1263             char setname[14];
1264             int ord;
1265             /* find the lowest unused ordinal so that we re-use
1266                result sets on the server. */
1267             for (ord = 1; ; ord++)
1268             {
1269                 ZOOM_resultset rp;
1270                 sprintf (setname, "%d", ord);
1271                 for (rp = c->resultsets; rp; rp = rp->next)
1272                     if (rp->setname && !strcmp (rp->setname, setname))
1273                         break;
1274                 if (!rp)
1275                     break;
1276             }
1277             r->setname = xstrdup (setname);
1278             yaz_log (LOG_DEBUG, "allocating set %s", r->setname);
1279         }
1280         else
1281             r->setname = xstrdup ("default");
1282         ZOOM_options_set (r->options, "setname", r->setname);
1283     }
1284     search_req->resultSetName = odr_strdup(c->odr_out, r->setname);
1285     /* send search request */
1286     return send_APDU (c, apdu);
1287 }
1288
1289 static void response_diag (ZOOM_connection c, Z_DiagRec *p)
1290 {
1291     int oclass;
1292     Z_DefaultDiagFormat *r;
1293     char *addinfo = 0;
1294
1295     xfree (c->addinfo);
1296     c->addinfo = 0;
1297     if (p->which != Z_DiagRec_defaultFormat)
1298     {
1299         set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
1300         return;
1301     }
1302     r = p->u.defaultFormat;
1303     switch (r->which)
1304     {
1305     case Z_DefaultDiagFormat_v2Addinfo:
1306         addinfo = r->u.v2Addinfo;
1307         break;
1308     case Z_DefaultDiagFormat_v3Addinfo:
1309         addinfo = r->u.v3Addinfo;
1310         break;
1311     }
1312     set_dset_error(c, *r->condition,
1313                    yaz_z3950oid_to_str(r->diagnosticSetId, &oclass),
1314                    addinfo, 0);
1315 }
1316
1317 ZOOM_API(ZOOM_record)
1318 ZOOM_record_clone (ZOOM_record srec)
1319 {
1320     char *buf;
1321     int size;
1322     ODR odr_enc;
1323     ZOOM_record nrec;
1324
1325     odr_enc = odr_createmem(ODR_ENCODE);
1326     if (!z_NamePlusRecord (odr_enc, &srec->npr, 0, 0))
1327         return 0;
1328     buf = odr_getbuf (odr_enc, &size, 0);
1329
1330     nrec = (ZOOM_record) xmalloc (sizeof(*nrec));
1331     nrec->odr = odr_createmem(ODR_DECODE);
1332     nrec->wrbuf_marc = 0;
1333     nrec->wrbuf_iconv = 0;
1334     nrec->wrbuf_opac = 0;
1335     odr_setbuf (nrec->odr, buf, size, 0);
1336     z_NamePlusRecord (nrec->odr, &nrec->npr, 0, 0);
1337
1338     odr_destroy (odr_enc);
1339     return nrec;
1340 }
1341
1342 ZOOM_API(ZOOM_record)
1343 ZOOM_resultset_record_immediate (ZOOM_resultset s,size_t pos)
1344 {
1345     return record_cache_lookup (s, pos);
1346 }
1347
1348 ZOOM_API(ZOOM_record)
1349 ZOOM_resultset_record (ZOOM_resultset r, size_t pos)
1350 {
1351     ZOOM_record rec = ZOOM_resultset_record_immediate(r, pos);
1352
1353     if (!rec)
1354     {
1355         ZOOM_resultset_retrieve (r, 1, pos, 1);
1356         rec = ZOOM_resultset_record_immediate (r, pos);
1357     }
1358     return rec;
1359 }
1360
1361 ZOOM_API(void)
1362 ZOOM_record_destroy (ZOOM_record rec)
1363 {
1364     if (!rec)
1365         return;
1366     if (rec->wrbuf_marc)
1367         wrbuf_free (rec->wrbuf_marc, 1);
1368     if (rec->wrbuf_iconv)
1369         wrbuf_free (rec->wrbuf_iconv, 1);
1370     if (rec->wrbuf_opac)
1371         wrbuf_free (rec->wrbuf_opac, 1);
1372     odr_destroy (rec->odr);
1373     xfree (rec);
1374 }
1375
1376 static const char *marc_iconv_return(ZOOM_record rec, int marc_type,
1377                                      int *len,
1378                                      const char *buf, int sz,
1379                                      const char *record_charset)
1380 {
1381     char to[40];
1382     char from[40];
1383     yaz_iconv_t cd = 0;
1384     yaz_marc_t mt = yaz_marc_create();
1385
1386     *from = '\0';
1387     strcpy(to, "UTF-8");
1388     if (record_charset && *record_charset)
1389     {
1390         /* Use "from,to" or just "from" */
1391         const char *cp =strchr(record_charset, ',');
1392         int clen = strlen(record_charset);
1393         if (cp && cp[1])
1394         {
1395             strncpy( to, cp+1, sizeof(to)-1);
1396             to[sizeof(to)-1] = '\0';
1397             clen = cp - record_charset;
1398         }
1399         if (clen > sizeof(from)-1)
1400             clen = sizeof(from)-1;
1401
1402         if (clen)
1403             strncpy(from, record_charset, clen);
1404         from[clen] = '\0';
1405     }
1406
1407     if (*from && *to)
1408     {
1409         cd = yaz_iconv_open(to, from);
1410         yaz_marc_iconv(mt, cd);
1411     }
1412
1413     yaz_marc_xml(mt, marc_type);
1414     if (!rec->wrbuf_marc)
1415         rec->wrbuf_marc = wrbuf_alloc();
1416     wrbuf_rewind (rec->wrbuf_marc);
1417     if (yaz_marc_decode_wrbuf (mt, buf, sz, rec->wrbuf_marc) > 0)
1418     {
1419         yaz_marc_destroy(mt);
1420         if (cd)
1421             yaz_iconv_close(cd);
1422         if (len)
1423             *len = wrbuf_len(rec->wrbuf_marc);
1424         return wrbuf_buf(rec->wrbuf_marc);
1425     }
1426     yaz_marc_destroy(mt);
1427     if (cd)
1428         yaz_iconv_close(cd);
1429     return 0;
1430 }
1431
1432 static const char *record_iconv_return(ZOOM_record rec, int *len,
1433                                        const char *buf, int sz,
1434                                        const char *record_charset)
1435 {
1436     char to[40];
1437     char from[40];
1438     yaz_iconv_t cd = 0;
1439
1440     *from = '\0';
1441     strcpy(to, "UTF-8");
1442     if (record_charset && *record_charset)
1443     {
1444         /* Use "from,to" or just "from" */
1445         const char *cp =strchr(record_charset, ',');
1446         int clen = strlen(record_charset);
1447         if (cp && cp[1])
1448         {
1449             strncpy( to, cp+1, sizeof(to)-1);
1450             to[sizeof(to)-1] = '\0';
1451             clen = cp - record_charset;
1452         }
1453         if (clen > sizeof(from)-1)
1454             clen = sizeof(from)-1;
1455
1456         if (clen)
1457             strncpy(from, record_charset, clen);
1458         from[clen] = '\0';
1459     }
1460
1461     if (*from && *to && (cd = yaz_iconv_open(to, from)))
1462     {
1463         char outbuf[12];
1464         size_t inbytesleft = sz;
1465         const char *inp = buf;
1466
1467         if (!rec->wrbuf_iconv)
1468             rec->wrbuf_iconv = wrbuf_alloc();
1469
1470         wrbuf_rewind(rec->wrbuf_iconv);
1471
1472         while (inbytesleft)
1473         {
1474             size_t outbytesleft = sizeof(outbuf);
1475             char *outp = outbuf;
1476             size_t r = yaz_iconv (cd, (char**) &inp,
1477                                   &inbytesleft,
1478                                   &outp, &outbytesleft);
1479             if (r == (size_t) (-1))
1480             {
1481                 int e = yaz_iconv_error(cd);
1482                 if (e != YAZ_ICONV_E2BIG)
1483                     break;
1484             }
1485             wrbuf_write(rec->wrbuf_iconv, outbuf, outp - outbuf);
1486         }
1487         wrbuf_puts(rec->wrbuf_iconv, "");
1488         buf = wrbuf_buf(rec->wrbuf_iconv);
1489         sz = wrbuf_len(rec->wrbuf_iconv);
1490         yaz_iconv_close(cd);
1491     }
1492     if (len)
1493         *len = sz;
1494     return buf;
1495 }
1496
1497 ZOOM_API(const char *)
1498 ZOOM_record_get (ZOOM_record rec, const char *type_spec, int *len)
1499 {
1500     char type[40];
1501     char charset[40];
1502     char xpath[512];
1503     const char *cp;
1504     int i;
1505     Z_NamePlusRecord *npr;
1506
1507     if (len)
1508         *len = 0; /* default return */
1509
1510     if (!rec)
1511         return 0;
1512     npr = rec->npr;
1513     if (!npr)
1514         return 0;
1515
1516     cp = type_spec;
1517     for (i = 0; cp[i] && i < sizeof(type)-1; i++)
1518     {
1519         if (cp[i] == ';' || cp[i] == ' ')
1520             break;
1521         type[i] = cp[i];
1522     }
1523     type[i] = '\0';
1524     charset[0] = '\0';
1525     while (type_spec[i] == ';')
1526     {
1527         i++;
1528         while (type_spec[i] == ' ')
1529             i++;
1530         if (!strncmp(type_spec+i, "charset=", 8))
1531         {
1532             cp = type_spec+i+8;
1533             for (i = 0; cp[i] && i < sizeof(charset)-1; i++)
1534             {
1535                 if (cp[i] == ';' || cp[i] == ' ')
1536                     break;
1537                 charset[i] = cp[i];
1538             }
1539             charset[i] = '\0';
1540         }
1541         else if (!strncmp(type_spec+i, "xpath=", 6))
1542         {
1543             cp = type_spec+i+6;
1544             for (i = 0; cp[i] && i < sizeof(xpath)-1; i++)
1545                 xpath[i] = cp[i];
1546             xpath[i] = '\0';
1547         }
1548         while (type_spec[i] == ' ')
1549             i++;
1550     }
1551     if (!strcmp (type, "database"))
1552     {
1553         if (len)
1554             *len = (npr->databaseName ? strlen(npr->databaseName) : 0);
1555         return npr->databaseName;
1556     }
1557     else if (!strcmp (type, "syntax"))
1558     {
1559         const char *desc = 0;
1560         if (npr->which == Z_NamePlusRecord_databaseRecord)
1561         {
1562             Z_External *r = (Z_External *) npr->u.databaseRecord;
1563             oident *ent = oid_getentbyoid(r->direct_reference);
1564             if (ent)
1565                 desc = ent->desc;
1566         }
1567         if (!desc)
1568             desc = "none";
1569         if (len)
1570             *len = strlen(desc);
1571         return desc;
1572     }
1573     if (npr->which != Z_NamePlusRecord_databaseRecord)
1574         return 0;
1575
1576     /* from now on - we have a database record .. */
1577     if (!strcmp (type, "render"))
1578     {
1579         Z_External *r = (Z_External *) npr->u.databaseRecord;
1580         oident *ent = oid_getentbyoid(r->direct_reference);
1581
1582         /* render bibliographic record .. */
1583         if (r->which == Z_External_OPAC)
1584         {
1585             r = r->u.opac->bibliographicRecord;
1586             if (!r)
1587                 return 0;
1588             ent = oid_getentbyoid(r->direct_reference);
1589         }
1590         if (r->which == Z_External_sutrs)
1591             return record_iconv_return(rec, len,
1592                                        r->u.sutrs->buf, r->u.sutrs->len,
1593                                        charset);
1594         else if (r->which == Z_External_octet)
1595         {
1596             const char *ret_buf;
1597             switch (ent->value)
1598             {
1599             case VAL_SOIF:
1600             case VAL_HTML:
1601             case VAL_SUTRS:
1602                 break;
1603             case VAL_TEXT_XML:
1604             case VAL_APPLICATION_XML:
1605                 break;
1606             default:
1607                 ret_buf = marc_iconv_return(
1608                     rec, YAZ_MARC_LINE, len,
1609                     (const char *) r->u.octet_aligned->buf,
1610                     r->u.octet_aligned->len,
1611                     charset);
1612                 if (ret_buf)
1613                     return ret_buf;
1614             }
1615             return record_iconv_return(rec, len,
1616                                        (const char *) r->u.octet_aligned->buf,
1617                                        r->u.octet_aligned->len,
1618                                        charset);
1619         }
1620         else if (r->which == Z_External_grs1)
1621         {
1622             if (!rec->wrbuf_marc)
1623                 rec->wrbuf_marc = wrbuf_alloc();
1624             wrbuf_rewind (rec->wrbuf_marc);
1625             yaz_display_grs1(rec->wrbuf_marc, r->u.grs1, 0);
1626             return record_iconv_return(rec, len,
1627                                        wrbuf_buf(rec->wrbuf_marc),
1628                                        wrbuf_len(rec->wrbuf_marc),
1629                                        charset);
1630         }
1631         return 0;
1632     }
1633     else if (!strcmp (type, "xml") || !strcmp(type, "oai"))
1634     {
1635         Z_External *r = (Z_External *) npr->u.databaseRecord;
1636         oident *ent = oid_getentbyoid(r->direct_reference);
1637
1638         /* render bibliographic record .. */
1639         if (r->which == Z_External_OPAC)
1640         {
1641             r = r->u.opac->bibliographicRecord;
1642             if (!r)
1643                 return 0;
1644             ent = oid_getentbyoid(r->direct_reference);
1645         }
1646
1647         if (r->which == Z_External_sutrs)
1648             return record_iconv_return(rec, len,
1649                                        (const char *) r->u.sutrs->buf,
1650                                        r->u.sutrs->len,
1651                                        charset);
1652         else if (r->which == Z_External_octet)
1653         {
1654             const char *ret_buf;
1655             int marc_decode_type = YAZ_MARC_MARCXML;
1656
1657             if (!strcmp(type, "oai"))
1658                 marc_decode_type = YAZ_MARC_OAIMARC;
1659             switch (ent->value)
1660             {
1661             case VAL_SOIF:
1662             case VAL_HTML:
1663             case VAL_SUTRS:
1664                 break;
1665             case VAL_TEXT_XML:
1666             case VAL_APPLICATION_XML:
1667                 break;
1668             default:
1669                 ret_buf = marc_iconv_return(
1670                     rec, marc_decode_type, len,
1671                     (const char *) r->u.octet_aligned->buf,
1672                     r->u.octet_aligned->len,
1673                     charset);
1674                 if (ret_buf)
1675                     return ret_buf;
1676             }
1677             return record_iconv_return(rec, len,
1678                                        (const char *) r->u.octet_aligned->buf,
1679                                        r->u.octet_aligned->len,
1680                                        charset);
1681         }
1682         else if (r->which == Z_External_grs1)
1683         {
1684             if (len) *len = 5;
1685             return "GRS-1";
1686         }
1687         return 0;
1688     }
1689     else if (!strcmp (type, "raw"))
1690     {
1691         Z_External *r = (Z_External *) npr->u.databaseRecord;
1692
1693         if (r->which == Z_External_sutrs)
1694         {
1695             if (len) *len = r->u.sutrs->len;
1696             return (const char *) r->u.sutrs->buf;
1697         }
1698         else if (r->which == Z_External_octet)
1699         {
1700             if (len) *len = r->u.octet_aligned->len;
1701             return (const char *) r->u.octet_aligned->buf;
1702         }
1703         else /* grs-1, explain, OPAC, ... */
1704         {
1705             if (len) *len = -1;
1706             return (const char *) npr->u.databaseRecord;
1707         }
1708         return 0;
1709     }
1710     else if (!strcmp (type, "ext"))
1711     {
1712         if (len) *len = -1;
1713         return (const char *) npr->u.databaseRecord;
1714     }
1715     else if (!strcmp (type, "opac"))
1716
1717     {
1718         Z_External *r = (Z_External *) npr->u.databaseRecord;
1719         if (r->which == Z_External_OPAC)
1720         {
1721             if (!rec->wrbuf_opac)
1722                 rec->wrbuf_opac = wrbuf_alloc();
1723             wrbuf_rewind (rec->wrbuf_opac);
1724             yaz_display_OPAC(rec->wrbuf_opac, r->u.opac, 0);
1725             return record_iconv_return(rec, len,
1726                                        wrbuf_buf(rec->wrbuf_opac),
1727                                        wrbuf_len(rec->wrbuf_opac),
1728                                        charset);
1729         }
1730     }
1731     return 0;
1732 }
1733
1734 static int strcmp_null(const char *v1, const char *v2)
1735 {
1736     if (!v1 && !v2)
1737         return 0;
1738     if (!v1 || !v2)
1739         return -1;
1740     return strcmp(v1, v2);
1741 }
1742
1743 static void record_cache_add (ZOOM_resultset r, Z_NamePlusRecord *npr,
1744                               int pos)
1745 {
1746     ZOOM_record_cache rc;
1747     const char *elementSetName =
1748         ZOOM_resultset_option_get (r, "elementSetName");
1749     const char *syntax =
1750         ZOOM_resultset_option_get (r, "preferredRecordSyntax");
1751
1752     ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_RECV_RECORD);
1753     ZOOM_connection_put_event(r->connection, event);
1754
1755     for (rc = r->record_cache; rc; rc = rc->next)
1756     {
1757         if (pos == rc->pos)
1758         {
1759             if (strcmp_null(r->schema, rc->schema))
1760                 continue;
1761             if (strcmp_null(elementSetName,rc->elementSetName))
1762                 continue;
1763             if (strcmp_null(syntax, rc->syntax))
1764                 continue;
1765             /* not destroying rc->npr (it's handled by nmem )*/
1766             rc->rec.npr = npr;
1767             /* keeping wrbuf_marc too */
1768             return;
1769         }
1770     }
1771     rc = (ZOOM_record_cache) odr_malloc (r->odr, sizeof(*rc));
1772     rc->rec.npr = npr;
1773     rc->rec.odr = 0;
1774     rc->rec.wrbuf_marc = 0;
1775     rc->rec.wrbuf_iconv = 0;
1776     rc->rec.wrbuf_opac = 0;
1777     if (elementSetName)
1778         rc->elementSetName = odr_strdup (r->odr, elementSetName);
1779     else
1780         rc->elementSetName = 0;
1781
1782     if (syntax)
1783         rc->syntax = odr_strdup (r->odr, syntax);
1784     else
1785         rc->syntax = 0;
1786
1787     if (r->schema)
1788         rc->schema = odr_strdup (r->odr, r->schema);
1789     else
1790         rc->schema = 0;
1791
1792     rc->pos = pos;
1793     rc->next = r->record_cache;
1794     r->record_cache = rc;
1795 }
1796
1797 static ZOOM_record record_cache_lookup (ZOOM_resultset r, int pos)
1798 {
1799     ZOOM_record_cache rc;
1800     const char *elementSetName =
1801         ZOOM_resultset_option_get (r, "elementSetName");
1802     const char *syntax =
1803         ZOOM_resultset_option_get (r, "preferredRecordSyntax");
1804
1805     for (rc = r->record_cache; rc; rc = rc->next)
1806     {
1807         if (pos == rc->pos)
1808         {
1809             if (strcmp_null(r->schema, rc->schema))
1810                 continue;
1811             if (strcmp_null(elementSetName,rc->elementSetName))
1812                 continue;
1813             if (strcmp_null(syntax, rc->syntax))
1814                 continue;
1815             return &rc->rec;
1816         }
1817     }
1818     return 0;
1819 }
1820
1821 static void handle_records (ZOOM_connection c, Z_Records *sr,
1822                             int present_phase)
1823 {
1824     ZOOM_resultset resultset;
1825
1826     if (!c->tasks)
1827         return ;
1828     switch (c->tasks->which)
1829     {
1830     case ZOOM_TASK_SEARCH:
1831         resultset = c->tasks->u.search.resultset;
1832         break;
1833     case ZOOM_TASK_RETRIEVE:
1834         resultset = c->tasks->u.retrieve.resultset;
1835         break;
1836     default:
1837         return;
1838     }
1839     if (sr && sr->which == Z_Records_NSD)
1840     {
1841         Z_DiagRec dr, *dr_p = &dr;
1842         dr.which = Z_DiagRec_defaultFormat;
1843         dr.u.defaultFormat = sr->u.nonSurrogateDiagnostic;
1844
1845         response_diag (c, dr_p);
1846     }
1847     else if (sr && sr->which == Z_Records_multipleNSD)
1848     {
1849         if (sr->u.multipleNonSurDiagnostics->num_diagRecs >= 1)
1850             response_diag(c, sr->u.multipleNonSurDiagnostics->diagRecs[0]);
1851         else
1852             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
1853     }
1854     else
1855     {
1856         if (resultset->count + resultset->start > resultset->size)
1857             resultset->count = resultset->size - resultset->start;
1858         if (resultset->count < 0)
1859             resultset->count = 0;
1860         if (sr && sr->which == Z_Records_DBOSD)
1861         {
1862             int i;
1863             NMEM nmem = odr_extract_mem (c->odr_in);
1864             Z_NamePlusRecordList *p =
1865                 sr->u.databaseOrSurDiagnostics;
1866             for (i = 0; i<p->num_records; i++)
1867             {
1868                 record_cache_add (resultset, p->records[i],
1869                                   i+ resultset->start);
1870             }
1871             /* transfer our response to search_nmem .. we need it later */
1872             nmem_transfer (resultset->odr->mem, nmem);
1873             nmem_destroy (nmem);
1874             if (present_phase && p->num_records == 0)
1875             {
1876                 /* present response and we didn't get any records! */
1877                 set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
1878             }
1879         }
1880         else if (present_phase)
1881         {
1882             /* present response and we didn't get any records! */
1883             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
1884         }
1885     }
1886 }
1887
1888 static void handle_present_response (ZOOM_connection c, Z_PresentResponse *pr)
1889 {
1890     handle_records (c, pr->records, 1);
1891 }
1892
1893 static void handle_search_response (ZOOM_connection c, Z_SearchResponse *sr)
1894 {
1895     ZOOM_resultset resultset;
1896     ZOOM_Event event;
1897
1898     yaz_log (LOG_DEBUG, "got search response");
1899
1900     if (!c->tasks || c->tasks->which != ZOOM_TASK_SEARCH)
1901         return ;
1902
1903     event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
1904     ZOOM_connection_put_event(c, event);
1905
1906     resultset = c->tasks->u.search.resultset;
1907
1908     resultset->size = *sr->resultCount;
1909     handle_records (c, sr->records, 0);
1910 }
1911
1912 static void sort_response (ZOOM_connection c, Z_SortResponse *res)
1913 {
1914     if (res->diagnostics && res->num_diagnostics > 0)
1915         response_diag (c, res->diagnostics[0]);
1916 }
1917
1918 static int scan_response (ZOOM_connection c, Z_ScanResponse *res)
1919 {
1920     NMEM nmem = odr_extract_mem (c->odr_in);
1921     ZOOM_scanset scan;
1922
1923     if (!c->tasks || c->tasks->which != ZOOM_TASK_SCAN)
1924         return 0;
1925     scan = c->tasks->u.scan.scan;
1926
1927     if (res->entries && res->entries->nonsurrogateDiagnostics)
1928         response_diag(c, res->entries->nonsurrogateDiagnostics[0]);
1929     scan->scan_response = res;
1930     nmem_transfer (scan->odr->mem, nmem);
1931     if (res->stepSize)
1932         ZOOM_options_set_int (scan->options, "stepSize", *res->stepSize);
1933     if (res->positionOfTerm)
1934         ZOOM_options_set_int (scan->options, "position", *res->positionOfTerm);
1935     if (res->scanStatus)
1936         ZOOM_options_set_int (scan->options, "scanStatus", *res->scanStatus);
1937     if (res->numberOfEntriesReturned)
1938         ZOOM_options_set_int (scan->options, "number",
1939                               *res->numberOfEntriesReturned);
1940     nmem_destroy (nmem);
1941     return 1;
1942 }
1943
1944 static zoom_ret send_sort (ZOOM_connection c)
1945 {
1946     ZOOM_resultset  resultset;
1947
1948     if (!c->tasks || c->tasks->which != ZOOM_TASK_SEARCH)
1949         return zoom_complete;
1950
1951     resultset = c->tasks->u.search.resultset;
1952
1953     if (c->error)
1954     {
1955         resultset->r_sort_spec = 0;
1956         return zoom_complete;
1957     }
1958     if (resultset->r_sort_spec)
1959     {
1960         Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_sortRequest);
1961         Z_SortRequest *req = apdu->u.sortRequest;
1962
1963         req->num_inputResultSetNames = 1;
1964         req->inputResultSetNames = (Z_InternationalString **)
1965             odr_malloc (c->odr_out, sizeof(*req->inputResultSetNames));
1966         req->inputResultSetNames[0] =
1967             odr_strdup (c->odr_out, resultset->setname);
1968         req->sortedResultSetName = odr_strdup (c->odr_out, resultset->setname);
1969         req->sortSequence = resultset->r_sort_spec;
1970         resultset->r_sort_spec = 0;
1971         return send_APDU (c, apdu);
1972     }
1973     return zoom_complete;
1974 }
1975
1976 static zoom_ret send_present (ZOOM_connection c)
1977 {
1978     Z_APDU *apdu = 0;
1979     Z_PresentRequest *req = 0;
1980     int i = 0;
1981     const char *syntax = 0;
1982     const char *elementSetName = 0;
1983     ZOOM_resultset  resultset;
1984
1985     if (!c->tasks)
1986         return zoom_complete;
1987
1988     switch (c->tasks->which)
1989     {
1990     case ZOOM_TASK_SEARCH:
1991         resultset = c->tasks->u.search.resultset;
1992         break;
1993     case ZOOM_TASK_RETRIEVE:
1994         resultset = c->tasks->u.retrieve.resultset;
1995         resultset->start = c->tasks->u.retrieve.start;
1996         resultset->count = c->tasks->u.retrieve.count;
1997
1998         if (resultset->start >= resultset->size)
1999             return zoom_complete;
2000         if (resultset->start + resultset->count > resultset->size)
2001             resultset->count = resultset->size - resultset->start;
2002         break;
2003     default:
2004         return zoom_complete;
2005     }
2006
2007     syntax = ZOOM_resultset_option_get (resultset, "preferredRecordSyntax");
2008     elementSetName = ZOOM_resultset_option_get (resultset, "elementSetName");
2009
2010     if (c->error)                  /* don't continue on error */
2011         return zoom_complete;
2012     if (resultset->start < 0)
2013         return zoom_complete;
2014     for (i = 0; i<resultset->count; i++)
2015     {
2016         ZOOM_record rec =
2017             record_cache_lookup (resultset, i + resultset->start);
2018         if (!rec)
2019             break;
2020     }
2021     if (i == resultset->count)
2022         return zoom_complete;
2023
2024     apdu = zget_APDU(c->odr_out, Z_APDU_presentRequest);
2025     req = apdu->u.presentRequest;
2026
2027     resultset->start += i;
2028     resultset->count -= i;
2029     *req->resultSetStartPoint = resultset->start + 1;
2030     *req->numberOfRecordsRequested = resultset->step>0 ?
2031         resultset->step : resultset->count;
2032     assert (*req->numberOfRecordsRequested > 0);
2033
2034     if (syntax && *syntax)
2035         req->preferredRecordSyntax =
2036             yaz_str_to_z3950oid (c->odr_out, CLASS_RECSYN, syntax);
2037
2038     if (resultset->schema && *resultset->schema)
2039     {
2040         Z_RecordComposition *compo = (Z_RecordComposition *)
2041             odr_malloc (c->odr_out, sizeof(*compo));
2042
2043         req->recordComposition = compo;
2044         compo->which = Z_RecordComp_complex;
2045         compo->u.complex = (Z_CompSpec *)
2046             odr_malloc(c->odr_out, sizeof(*compo->u.complex));
2047         compo->u.complex->selectAlternativeSyntax = (bool_t *)
2048             odr_malloc(c->odr_out, sizeof(bool_t));
2049         *compo->u.complex->selectAlternativeSyntax = 0;
2050
2051         compo->u.complex->generic = (Z_Specification *)
2052             odr_malloc(c->odr_out, sizeof(*compo->u.complex->generic));
2053
2054         compo->u.complex->generic->which = Z_Schema_oid;
2055         compo->u.complex->generic->schema.oid = (Odr_oid *)
2056             yaz_str_to_z3950oid (c->odr_out, CLASS_SCHEMA, resultset->schema);
2057
2058         if (!compo->u.complex->generic->schema.oid)
2059         {
2060             /* OID wasn't a schema! Try record syntax instead. */
2061
2062             compo->u.complex->generic->schema.oid = (Odr_oid *)
2063                 yaz_str_to_z3950oid (c->odr_out, CLASS_RECSYN, resultset->schema);
2064         }
2065         if (elementSetName && *elementSetName)
2066         {
2067             compo->u.complex->generic->elementSpec = (Z_ElementSpec *)
2068                 odr_malloc(c->odr_out, sizeof(Z_ElementSpec));
2069             compo->u.complex->generic->elementSpec->which =
2070                 Z_ElementSpec_elementSetName;
2071             compo->u.complex->generic->elementSpec->u.elementSetName =
2072                 odr_strdup (c->odr_out, elementSetName);
2073         }
2074         else
2075             compo->u.complex->generic->elementSpec = 0;
2076         compo->u.complex->num_dbSpecific = 0;
2077         compo->u.complex->dbSpecific = 0;
2078         compo->u.complex->num_recordSyntax = 0;
2079         compo->u.complex->recordSyntax = 0;
2080     }
2081     else if (elementSetName && *elementSetName)
2082     {
2083         Z_ElementSetNames *esn = (Z_ElementSetNames *)
2084             odr_malloc (c->odr_out, sizeof(*esn));
2085         Z_RecordComposition *compo = (Z_RecordComposition *)
2086             odr_malloc (c->odr_out, sizeof(*compo));
2087
2088         esn->which = Z_ElementSetNames_generic;
2089         esn->u.generic = odr_strdup (c->odr_out, elementSetName);
2090         compo->which = Z_RecordComp_simple;
2091         compo->u.simple = esn;
2092         req->recordComposition = compo;
2093     }
2094     req->resultSetId = odr_strdup(c->odr_out, resultset->setname);
2095     return send_APDU (c, apdu);
2096 }
2097
2098 ZOOM_API(ZOOM_scanset)
2099 ZOOM_connection_scan (ZOOM_connection c, const char *start)
2100 {
2101     ZOOM_scanset scan = (ZOOM_scanset) xmalloc (sizeof(*scan));
2102
2103     scan->connection = c;
2104     scan->odr = odr_createmem (ODR_DECODE);
2105     scan->options = ZOOM_options_create_with_parent (c->options);
2106     scan->refcount = 1;
2107     scan->scan_response = 0;
2108
2109     if ((scan->termListAndStartPoint =
2110          p_query_scan(scan->odr, PROTO_Z3950, &scan->attributeSet,
2111                       start)))
2112     {
2113         ZOOM_task task = ZOOM_connection_add_task (c, ZOOM_TASK_SCAN);
2114         task->u.scan.scan = scan;
2115
2116         (scan->refcount)++;
2117         if (!c->async)
2118         {
2119             while (ZOOM_event (1, &c))
2120                 ;
2121         }
2122     }
2123     return scan;
2124 }
2125
2126 ZOOM_API(void)
2127 ZOOM_scanset_destroy (ZOOM_scanset scan)
2128 {
2129     if (!scan)
2130         return;
2131     (scan->refcount)--;
2132     if (scan->refcount == 0)
2133     {
2134         odr_destroy (scan->odr);
2135
2136         ZOOM_options_destroy (scan->options);
2137         xfree (scan);
2138     }
2139 }
2140
2141 static zoom_ret send_package (ZOOM_connection c)
2142 {
2143     ZOOM_Event event;
2144     if (!c->tasks)
2145         return zoom_complete;
2146     assert (c->tasks->which == ZOOM_TASK_PACKAGE);
2147
2148     event = ZOOM_Event_create (ZOOM_EVENT_SEND_APDU);
2149     ZOOM_connection_put_event (c, event);
2150
2151     return do_write_ex (c, c->tasks->u.package->buf_out,
2152                         c->tasks->u.package->len_out);
2153 }
2154
2155 static zoom_ret send_scan (ZOOM_connection c)
2156 {
2157     ZOOM_scanset scan;
2158     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_scanRequest);
2159     Z_ScanRequest *req = apdu->u.scanRequest;
2160     if (!c->tasks)
2161         return zoom_complete;
2162     assert (c->tasks->which == ZOOM_TASK_SCAN);
2163     scan = c->tasks->u.scan.scan;
2164
2165     req->termListAndStartPoint = scan->termListAndStartPoint;
2166     req->attributeSet = scan->attributeSet;
2167
2168     *req->numberOfTermsRequested =
2169         ZOOM_options_get_int(scan->options, "number", 10);
2170
2171     req->preferredPositionInResponse =
2172         odr_intdup (c->odr_out,
2173                     ZOOM_options_get_int(scan->options, "position", 1));
2174
2175     req->stepSize =
2176         odr_intdup (c->odr_out,
2177                     ZOOM_options_get_int(scan->options, "stepSize", 0));
2178
2179     req->databaseNames = set_DatabaseNames (c, scan->options,
2180                                             &req->num_databaseNames);
2181
2182     return send_APDU (c, apdu);
2183 }
2184
2185 ZOOM_API(size_t)
2186 ZOOM_scanset_size (ZOOM_scanset scan)
2187 {
2188     if (!scan || !scan->scan_response || !scan->scan_response->entries)
2189         return 0;
2190     return scan->scan_response->entries->num_entries;
2191 }
2192
2193 ZOOM_API(const char *)
2194 ZOOM_scanset_term (ZOOM_scanset scan, size_t pos,
2195                    int *occ, int *len)
2196 {
2197     const char *term = 0;
2198     size_t noent = ZOOM_scanset_size (scan);
2199     Z_ScanResponse *res = scan->scan_response;
2200
2201     *len = 0;
2202     *occ = 0;
2203     if (pos >= noent)
2204         return 0;
2205     if (res->entries->entries[pos]->which == Z_Entry_termInfo)
2206     {
2207         Z_TermInfo *t = res->entries->entries[pos]->u.termInfo;
2208
2209         if (t->term->which == Z_Term_general)
2210         {
2211             term = (const char *) t->term->u.general->buf;
2212             *len = t->term->u.general->len;
2213         }
2214         *occ = t->globalOccurrences ? *t->globalOccurrences : 0;
2215     }
2216     return term;
2217 }
2218
2219 ZOOM_API(const char *)
2220 ZOOM_scanset_display_term (ZOOM_scanset scan, size_t pos,
2221                            int *occ, int *len)
2222 {
2223     const char *term = 0;
2224     size_t noent = ZOOM_scanset_size (scan);
2225     Z_ScanResponse *res = scan->scan_response;
2226
2227     *len = 0;
2228     *occ = 0;
2229     if (pos >= noent)
2230         return 0;
2231     if (res->entries->entries[pos]->which == Z_Entry_termInfo)
2232     {
2233         Z_TermInfo *t = res->entries->entries[pos]->u.termInfo;
2234
2235         if (t->displayTerm)
2236         {
2237             term = t->displayTerm;
2238             *len = strlen(term);
2239         }
2240         else if (t->term->which == Z_Term_general)
2241         {
2242             term = (const char *) t->term->u.general->buf;
2243             *len = t->term->u.general->len;
2244         }
2245         *occ = t->globalOccurrences ? *t->globalOccurrences : 0;
2246     }
2247     return term;
2248 }
2249
2250 ZOOM_API(const char *)
2251 ZOOM_scanset_option_get (ZOOM_scanset scan, const char *key)
2252 {
2253     return ZOOM_options_get (scan->options, key);
2254 }
2255
2256 ZOOM_API(void)
2257 ZOOM_scanset_option_set (ZOOM_scanset scan, const char *key,
2258                               const char *val)
2259 {
2260     ZOOM_options_set (scan->options, key, val);
2261 }
2262
2263 static Z_APDU *create_es_package (ZOOM_package p, int type)
2264 {
2265     const char *str;
2266     Z_APDU *apdu = zget_APDU(p->odr_out, Z_APDU_extendedServicesRequest);
2267     Z_ExtendedServicesRequest *req = apdu->u.extendedServicesRequest;
2268
2269     *req->function = Z_ExtendedServicesRequest_create;
2270
2271     str = ZOOM_options_get(p->options, "package-name");
2272     if (str && *str)
2273         req->packageName = nmem_strdup (p->odr_out->mem, str);
2274
2275     str = ZOOM_options_get(p->options, "user-id");
2276     if (str)
2277         req->userId = nmem_strdup (p->odr_out->mem, str);
2278
2279     req->packageType = yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2280                                               type);
2281
2282     str = ZOOM_options_get(p->options, "function");
2283     if (str)
2284     {
2285         if (!strcmp (str, "create"))
2286             *req->function = 1;
2287         if (!strcmp (str, "delete"))
2288             *req->function = 2;
2289         if (!strcmp (str, "modify"))
2290             *req->function = 3;
2291     }
2292     return apdu;
2293 }
2294
2295 static const char *ill_array_lookup (void *clientData, const char *idx)
2296 {
2297     ZOOM_package p = (ZOOM_package) clientData;
2298     return ZOOM_options_get (p->options, idx+4);
2299 }
2300
2301 static Z_External *encode_ill_request (ZOOM_package p)
2302 {
2303     ODR out = p->odr_out;
2304     ILL_Request *req;
2305     Z_External *r = 0;
2306     struct ill_get_ctl ctl;
2307
2308     ctl.odr = p->odr_out;
2309     ctl.clientData = p;
2310     ctl.f = ill_array_lookup;
2311
2312     req = ill_get_ILLRequest(&ctl, "ill", 0);
2313
2314     if (!ill_Request (out, &req, 0, 0))
2315     {
2316         int ill_request_size;
2317         char *ill_request_buf = odr_getbuf (out, &ill_request_size, 0);
2318         if (ill_request_buf)
2319             odr_setbuf (out, ill_request_buf, ill_request_size, 1);
2320         return 0;
2321     }
2322     else
2323     {
2324         oident oid;
2325         int illRequest_size = 0;
2326         char *illRequest_buf = odr_getbuf (out, &illRequest_size, 0);
2327
2328         oid.proto = PROTO_GENERAL;
2329         oid.oclass = CLASS_GENERAL;
2330         oid.value = VAL_ISO_ILL_1;
2331
2332         r = (Z_External *) odr_malloc (out, sizeof(*r));
2333         r->direct_reference = odr_oiddup(out,oid_getoidbyent(&oid));
2334         r->indirect_reference = 0;
2335         r->descriptor = 0;
2336         r->which = Z_External_single;
2337
2338         r->u.single_ASN1_type = (Odr_oct *)
2339             odr_malloc (out, sizeof(*r->u.single_ASN1_type));
2340         r->u.single_ASN1_type->buf = (unsigned char*)
2341             odr_malloc (out, illRequest_size);
2342         r->u.single_ASN1_type->len = illRequest_size;
2343         r->u.single_ASN1_type->size = illRequest_size;
2344         memcpy (r->u.single_ASN1_type->buf, illRequest_buf, illRequest_size);
2345     }
2346     return r;
2347 }
2348
2349 static Z_ItemOrder *encode_item_order(ZOOM_package p)
2350 {
2351     Z_ItemOrder *req = (Z_ItemOrder *) odr_malloc (p->odr_out, sizeof(*req));
2352     const char *str;
2353
2354     req->which=Z_IOItemOrder_esRequest;
2355     req->u.esRequest = (Z_IORequest *)
2356         odr_malloc(p->odr_out,sizeof(Z_IORequest));
2357
2358     /* to keep part ... */
2359     req->u.esRequest->toKeep = (Z_IOOriginPartToKeep *)
2360         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartToKeep));
2361     req->u.esRequest->toKeep->supplDescription = 0;
2362     req->u.esRequest->toKeep->contact = (Z_IOContact *)
2363         odr_malloc (p->odr_out, sizeof(*req->u.esRequest->toKeep->contact));
2364
2365     str = ZOOM_options_get(p->options, "contact-name");
2366     req->u.esRequest->toKeep->contact->name = str ?
2367         nmem_strdup (p->odr_out->mem, str) : 0;
2368
2369     str = ZOOM_options_get(p->options, "contact-phone");
2370     req->u.esRequest->toKeep->contact->phone = str ?
2371         nmem_strdup (p->odr_out->mem, str) : 0;
2372
2373     str = ZOOM_options_get(p->options, "contact-email");
2374     req->u.esRequest->toKeep->contact->email = str ?
2375         nmem_strdup (p->odr_out->mem, str) : 0;
2376
2377     req->u.esRequest->toKeep->addlBilling = 0;
2378
2379     /* not to keep part ... */
2380     req->u.esRequest->notToKeep = (Z_IOOriginPartNotToKeep *)
2381         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartNotToKeep));
2382
2383     str = ZOOM_options_get(p->options, "itemorder-setname");
2384     if (!str)
2385         str = "default";
2386
2387     if (!*str)
2388         req->u.esRequest->notToKeep->resultSetItem = 0;
2389     else
2390     {
2391         req->u.esRequest->notToKeep->resultSetItem = (Z_IOResultSetItem *)
2392            odr_malloc(p->odr_out, sizeof(Z_IOResultSetItem));
2393
2394         req->u.esRequest->notToKeep->resultSetItem->resultSetId =
2395            nmem_strdup (p->odr_out->mem, str);
2396         req->u.esRequest->notToKeep->resultSetItem->item =
2397             (int *) odr_malloc(p->odr_out, sizeof(int));
2398
2399         str = ZOOM_options_get(p->options, "itemorder-item");
2400         *req->u.esRequest->notToKeep->resultSetItem->item =
2401             (str ? atoi(str) : 1);
2402     }
2403     req->u.esRequest->notToKeep->itemRequest = encode_ill_request(p);
2404
2405     return req;
2406 }
2407
2408 Z_APDU *create_admin_package(ZOOM_package p, int type,
2409                              Z_ESAdminOriginPartToKeep **toKeepP,
2410                              Z_ESAdminOriginPartNotToKeep **notToKeepP)
2411 {
2412     Z_APDU *apdu = create_es_package (p, VAL_ADMINSERVICE);
2413     if (apdu)
2414     {
2415         Z_ESAdminOriginPartToKeep  *toKeep;
2416         Z_ESAdminOriginPartNotToKeep  *notToKeep;
2417         Z_External *r = (Z_External *) odr_malloc (p->odr_out, sizeof(*r));
2418         const char *first_db = "Default";
2419         int num_db;
2420         char **db = set_DatabaseNames(p->connection, p->options, &num_db);
2421         if (num_db > 0)
2422             first_db = db[0];
2423
2424         r->direct_reference =
2425             yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2426                                    VAL_ADMINSERVICE);
2427         r->descriptor = 0;
2428         r->indirect_reference = 0;
2429         r->which = Z_External_ESAdmin;
2430
2431         r->u.adminService = (Z_Admin *)
2432             odr_malloc(p->odr_out, sizeof(*r->u.adminService));
2433         r->u.adminService->which = Z_Admin_esRequest;
2434         r->u.adminService->u.esRequest = (Z_AdminEsRequest *)
2435             odr_malloc(p->odr_out, sizeof(*r->u.adminService->u.esRequest));
2436
2437         toKeep = r->u.adminService->u.esRequest->toKeep =
2438             (Z_ESAdminOriginPartToKeep *)
2439             odr_malloc(p->odr_out, sizeof(*r->u.adminService->u.esRequest->toKeep));
2440         toKeep->which=type;
2441         toKeep->databaseName = odr_strdup(p->odr_out, first_db);
2442         toKeep->u.create=odr_nullval();
2443         apdu->u.extendedServicesRequest->taskSpecificParameters = r;
2444
2445         r->u.adminService->u.esRequest->notToKeep = notToKeep =
2446             (Z_ESAdminOriginPartNotToKeep *)
2447             odr_malloc(p->odr_out,
2448                        sizeof(*r->u.adminService->u.esRequest->notToKeep));
2449         notToKeep->which=Z_ESAdminOriginPartNotToKeep_recordsWillFollow;
2450         notToKeep->u.recordsWillFollow=odr_nullval();
2451         if (toKeepP)
2452             *toKeepP = toKeep;
2453         if (notToKeepP)
2454             *notToKeepP = notToKeep;
2455     }
2456     return apdu;
2457 }
2458
2459 static Z_APDU *create_update_package(ZOOM_package p)
2460 {
2461     Z_APDU *apdu = 0;
2462     const char *first_db = "Default";
2463     int num_db;
2464     char **db = set_DatabaseNames(p->connection, p->options, &num_db);
2465     const char *action = ZOOM_options_get(p->options, "action");
2466     const char *recordIdOpaque = ZOOM_options_get(p->options, "recordIdOpaque");
2467     const char *recordIdNumber = ZOOM_options_get(p->options, "recordIdNumber");
2468     const char *record_buf = ZOOM_options_get(p->options, "record");
2469     const char *syntax_str = ZOOM_options_get(p->options, "syntax");
2470     int syntax_oid = VAL_NONE;
2471     int action_no = -1;
2472
2473     if (syntax_str)
2474         syntax_oid = oid_getvalbyname(syntax_str);
2475     if (!record_buf)
2476     {
2477         record_buf = "void";
2478         syntax_oid = VAL_SUTRS;
2479     }
2480     if (syntax_oid != VAL_NONE)
2481         syntax_oid = VAL_TEXT_XML;
2482
2483     if (num_db > 0)
2484         first_db = db[0];
2485
2486     if (!action)
2487         action = "specialUpdate";
2488
2489     if (!strcmp(action, "recordInsert"))
2490         action_no = Z_IUOriginPartToKeep_recordInsert;
2491     else if (!strcmp(action, "recordReplace"))
2492         action_no = Z_IUOriginPartToKeep_recordReplace;
2493     else if (!strcmp(action, "recordDelete"))
2494         action_no = Z_IUOriginPartToKeep_recordDelete;
2495     else if (!strcmp(action, "elementUpdate"))
2496         action_no = Z_IUOriginPartToKeep_elementUpdate;
2497     else if (!strcmp(action, "specialUpdate"))
2498         action_no = Z_IUOriginPartToKeep_specialUpdate;
2499     else
2500         return 0;
2501
2502     apdu = create_es_package (p, VAL_DBUPDATE);
2503     if (apdu)
2504     {
2505         Z_IUOriginPartToKeep *toKeep;
2506         Z_IUSuppliedRecords *notToKeep;
2507         Z_External *r = (Z_External *)
2508             odr_malloc (p->odr_out, sizeof(*r));
2509
2510         apdu->u.extendedServicesRequest->taskSpecificParameters = r;
2511
2512         r->direct_reference =
2513             yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2514                                    VAL_DBUPDATE);
2515         r->descriptor = 0;
2516         r->which = Z_External_update;
2517         r->indirect_reference = 0;
2518         r->u.update = (Z_IUUpdate *)
2519             odr_malloc(p->odr_out, sizeof(*r->u.update));
2520
2521         r->u.update->which = Z_IUUpdate_esRequest;
2522         r->u.update->u.esRequest = (Z_IUUpdateEsRequest *)
2523             odr_malloc(p->odr_out, sizeof(*r->u.update->u.esRequest));
2524         toKeep = r->u.update->u.esRequest->toKeep =
2525             (Z_IUOriginPartToKeep *)
2526             odr_malloc(p->odr_out, sizeof(*toKeep));
2527
2528         toKeep->databaseName = odr_strdup(p->odr_out, first_db);
2529         toKeep->schema = 0;
2530         toKeep->elementSetName = 0;
2531         toKeep->actionQualifier = 0;
2532         toKeep->action = odr_intdup(p->odr_out, action_no);
2533
2534         notToKeep = r->u.update->u.esRequest->notToKeep =
2535             (Z_IUSuppliedRecords *)
2536             odr_malloc(p->odr_out, sizeof(*notToKeep));
2537         notToKeep->num = 1;
2538         notToKeep->elements = (Z_IUSuppliedRecords_elem **)
2539             odr_malloc(p->odr_out, sizeof(*notToKeep->elements));
2540         notToKeep->elements[0] = (Z_IUSuppliedRecords_elem *)
2541             odr_malloc(p->odr_out, sizeof(**notToKeep->elements));
2542         notToKeep->elements[0]->which = Z_IUSuppliedRecords_elem_opaque;
2543         if (recordIdOpaque)
2544         {
2545             notToKeep->elements[0]->u.opaque = (Odr_oct *)
2546                 odr_malloc (p->odr_out, sizeof(Odr_oct));
2547             notToKeep->elements[0]->u.opaque->size =
2548                 notToKeep->elements[0]->u.opaque->len = strlen(recordIdOpaque);
2549             notToKeep->elements[0]->u.opaque->buf =
2550                 odr_strdup(p->odr_out, recordIdOpaque);
2551         }
2552         else if (recordIdNumber)
2553         {
2554             notToKeep->elements[0]->which = Z_IUSuppliedRecords_elem_number;
2555
2556             notToKeep->elements[0]->u.number =
2557                 odr_intdup(p->odr_out, atoi(recordIdNumber));
2558         }
2559         else
2560             notToKeep->elements[0]->u.opaque = 0;
2561         notToKeep->elements[0]->supplementalId = 0;
2562         notToKeep->elements[0]->correlationInfo = 0;
2563         notToKeep->elements[0]->record =
2564             z_ext_record(p->odr_out, syntax_oid,
2565                          record_buf, strlen(record_buf));
2566     }
2567     if (0 && apdu)
2568     {
2569        ODR print = odr_createmem(ODR_PRINT);
2570
2571        z_APDU(print, &apdu, 0, 0);
2572        odr_destroy(print);
2573     }
2574     return apdu;
2575 }
2576
2577 ZOOM_API(void)
2578     ZOOM_package_send (ZOOM_package p, const char *type)
2579 {
2580     Z_APDU *apdu = 0;
2581     ZOOM_connection c;
2582     if (!p)
2583         return;
2584     c = p->connection;
2585     odr_reset (p->odr_out);
2586     xfree (p->buf_out);
2587     p->buf_out = 0;
2588     if (!strcmp(type, "itemorder"))
2589     {
2590         apdu = create_es_package (p, VAL_ITEMORDER);
2591         if (apdu)
2592         {
2593             Z_External *r = (Z_External *) odr_malloc (p->odr_out, sizeof(*r));
2594
2595             r->direct_reference =
2596                 yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2597                                        VAL_ITEMORDER);
2598             r->descriptor = 0;
2599             r->which = Z_External_itemOrder;
2600             r->indirect_reference = 0;
2601             r->u.itemOrder = encode_item_order (p);
2602
2603             apdu->u.extendedServicesRequest->taskSpecificParameters = r;
2604         }
2605     }
2606     if (!strcmp(type, "create"))  /* create database */
2607     {
2608         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_create,
2609                                     0, 0);
2610     }
2611     if (!strcmp(type, "drop"))  /* drop database */
2612     {
2613         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_drop,
2614                                     0, 0);
2615     }
2616     if (!strcmp(type, "update")) /* update record(s) */
2617     {
2618         apdu = create_update_package(p);
2619     }
2620     if (apdu)
2621     {
2622         if (encode_APDU(p->connection, apdu, p->odr_out) == 0)
2623         {
2624             char *buf;
2625
2626             ZOOM_task task = ZOOM_connection_add_task (c, ZOOM_TASK_PACKAGE);
2627             task->u.package = p;
2628             buf = odr_getbuf(p->odr_out, &p->len_out, 0);
2629             p->buf_out = (char *) xmalloc (p->len_out);
2630             memcpy (p->buf_out, buf, p->len_out);
2631
2632             (p->refcount)++;
2633             if (!c->async)
2634             {
2635                 while (ZOOM_event (1, &c))
2636                     ;
2637             }
2638         }
2639     }
2640 }
2641
2642 ZOOM_API(ZOOM_package)
2643     ZOOM_connection_package (ZOOM_connection c, ZOOM_options options)
2644 {
2645     ZOOM_package p = (ZOOM_package) xmalloc (sizeof(*p));
2646
2647     p->connection = c;
2648     p->odr_out = odr_createmem (ODR_ENCODE);
2649     p->options = ZOOM_options_create_with_parent2 (options, c->options);
2650     p->refcount = 1;
2651     p->buf_out = 0;
2652     p->len_out = 0;
2653     return p;
2654 }
2655
2656 ZOOM_API(void)
2657     ZOOM_package_destroy(ZOOM_package p)
2658 {
2659     if (!p)
2660         return;
2661     (p->refcount)--;
2662     if (p->refcount == 0)
2663     {
2664         odr_destroy (p->odr_out);
2665         xfree (p->buf_out);
2666
2667         ZOOM_options_destroy (p->options);
2668         xfree (p);
2669     }
2670 }
2671
2672 ZOOM_API(const char *)
2673 ZOOM_package_option_get (ZOOM_package p, const char *key)
2674 {
2675     return ZOOM_options_get (p->options, key);
2676 }
2677
2678
2679 ZOOM_API(void)
2680 ZOOM_package_option_set (ZOOM_package p, const char *key,
2681                               const char *val)
2682 {
2683     ZOOM_options_set (p->options, key, val);
2684 }
2685
2686 static int ZOOM_connection_exec_task (ZOOM_connection c)
2687 {
2688     ZOOM_task task = c->tasks;
2689     zoom_ret ret = zoom_complete;
2690
2691     if (!task)
2692     {
2693         yaz_log (LOG_DEBUG, "ZOOM_connection_exec_task task=<null>");
2694         return 0;
2695     }
2696     yaz_log (LOG_DEBUG, "ZOOM_connection_exec_task type=%d run=%d",
2697              task->which, task->running);
2698     if (c->error != ZOOM_ERROR_NONE)
2699     {
2700         yaz_log (LOG_DEBUG, "remove tasks because of error = %d", c->error);
2701         ZOOM_connection_remove_tasks (c);
2702         return 0;
2703     }
2704     if (task->running)
2705     {
2706         yaz_log (LOG_DEBUG, "task already running");
2707         return 0;
2708     }
2709     task->running = 1;
2710     ret = zoom_complete;
2711     if (c->cs || task->which == ZOOM_TASK_CONNECT)
2712     {
2713         switch (task->which)
2714         {
2715         case ZOOM_TASK_SEARCH:
2716             if (c->proto == PROTO_HTTP)
2717                 ret = ZOOM_connection_srw_send_search(c);
2718             else
2719                 ret = ZOOM_connection_send_search(c);
2720             break;
2721         case ZOOM_TASK_RETRIEVE:
2722             if (c->proto == PROTO_HTTP)
2723                 ret = ZOOM_connection_srw_send_search(c);
2724             else
2725                 ret = send_present (c);
2726             break;
2727         case ZOOM_TASK_CONNECT:
2728             ret = do_connect(c);
2729             break;
2730         case ZOOM_TASK_SCAN:
2731             ret = send_scan(c);
2732             break;
2733         case ZOOM_TASK_PACKAGE:
2734             ret = send_package(c);
2735             break;
2736         }
2737     }
2738     else
2739     {
2740         yaz_log (LOG_DEBUG, "remove tasks because no connection exist");
2741         ZOOM_connection_remove_tasks (c);
2742     }
2743     if (ret == zoom_complete)
2744     {
2745         yaz_log (LOG_DEBUG, "task removed (complete)");
2746         ZOOM_connection_remove_task (c);
2747         return 0;
2748     }
2749     yaz_log (LOG_DEBUG, "task pending");
2750     return 1;
2751 }
2752
2753 static zoom_ret send_sort_present (ZOOM_connection c)
2754 {
2755     zoom_ret r = send_sort (c);
2756     if (r == zoom_complete)
2757         r = send_present (c);
2758     return r;
2759 }
2760
2761 static int es_response (ZOOM_connection c,
2762                         Z_ExtendedServicesResponse *res)
2763 {
2764     if (!c->tasks || c->tasks->which != ZOOM_TASK_PACKAGE)
2765         return 0;
2766     if (res->diagnostics && res->num_diagnostics > 0)
2767         response_diag(c, res->diagnostics[0]);
2768     if (res->taskPackage &&
2769         res->taskPackage->which == Z_External_extendedService)
2770     {
2771         Z_TaskPackage *taskPackage = res->taskPackage->u.extendedService;
2772         Odr_oct *id = taskPackage->targetReference;
2773
2774         if (id)
2775             ZOOM_options_setl (c->tasks->u.package->options,
2776                                "targetReference", (char*) id->buf, id->len);
2777     }
2778     return 1;
2779 }
2780
2781
2782 static void handle_apdu (ZOOM_connection c, Z_APDU *apdu)
2783 {
2784     Z_InitResponse *initrs;
2785
2786     c->mask = 0;
2787     yaz_log (LOG_DEBUG, "recv APDU type=%d", apdu->which);
2788     switch(apdu->which)
2789     {
2790     case Z_APDU_initResponse:
2791         initrs = apdu->u.initResponse;
2792         ZOOM_connection_option_set(c, "serverImplementationId",
2793                                    initrs->implementationId ?
2794                                    initrs->implementationId : "");
2795         ZOOM_connection_option_set(c, "serverImplementationName",
2796                                    initrs->implementationName ?
2797                                    initrs->implementationName : "");
2798         ZOOM_connection_option_set(c, "serverImplementationVersion",
2799                                    initrs->implementationVersion ?
2800                                    initrs->implementationVersion : "");
2801         /* Set the three old options too, for old applications */
2802         ZOOM_connection_option_set(c, "targetImplementationId",
2803                                    initrs->implementationId ?
2804                                    initrs->implementationId : "");
2805         ZOOM_connection_option_set(c, "targetImplementationName",
2806                                    initrs->implementationName ?
2807                                    initrs->implementationName : "");
2808         ZOOM_connection_option_set(c, "targetImplementationVersion",
2809                                    initrs->implementationVersion ?
2810                                    initrs->implementationVersion : "");
2811         if (!*initrs->result)
2812         {
2813             set_ZOOM_error(c, ZOOM_ERROR_INIT, 0);
2814         }
2815         else
2816         {
2817             char *cookie =
2818                 yaz_oi_get_string_oidval (&apdu->u.initResponse->otherInfo,
2819                                           VAL_COOKIE, 1, 0);
2820             xfree (c->cookie_in);
2821             c->cookie_in = 0;
2822             if (cookie)
2823                 c->cookie_in = xstrdup(cookie);
2824             if (ODR_MASK_GET(initrs->options, Z_Options_namedResultSets) &&
2825                 ODR_MASK_GET(initrs->protocolVersion, Z_ProtocolVersion_3))
2826                 c->support_named_resultsets = 1;
2827             if (c->tasks)
2828             {
2829                 assert (c->tasks->which == ZOOM_TASK_CONNECT);
2830                 ZOOM_connection_remove_task (c);
2831             }
2832             ZOOM_connection_exec_task (c);
2833         }
2834         if (ODR_MASK_GET(initrs->options, Z_Options_negotiationModel))
2835         {
2836             NMEM tmpmem = nmem_create();
2837             Z_CharSetandLanguageNegotiation *p =
2838                 yaz_get_charneg_record(initrs->otherInfo);
2839
2840             if (p)
2841             {
2842                 char *charset=NULL, *lang=NULL;
2843                 int sel;
2844
2845                 yaz_get_response_charneg(tmpmem, p, &charset, &lang, &sel);
2846                 yaz_log(LOG_DEBUG, "Target accepted: charset %s, "
2847                         "language %s, select %d",
2848                         charset ? charset : "none", lang ? lang : "none", sel);
2849                 if (charset)
2850                     ZOOM_connection_option_set (c, "negotiation-charset",
2851                                                 charset);
2852                 if (lang)
2853                     ZOOM_connection_option_set (c, "negotiation-lang",
2854                                                 lang);
2855                 nmem_destroy(tmpmem);
2856             }
2857         }
2858         break;
2859     case Z_APDU_searchResponse:
2860         handle_search_response (c, apdu->u.searchResponse);
2861         if (send_sort_present (c) == zoom_complete)
2862             ZOOM_connection_remove_task (c);
2863         break;
2864     case Z_APDU_presentResponse:
2865         handle_present_response (c, apdu->u.presentResponse);
2866         if (send_present (c) == zoom_complete)
2867             ZOOM_connection_remove_task (c);
2868         break;
2869     case Z_APDU_sortResponse:
2870         sort_response (c, apdu->u.sortResponse);
2871         if (send_present (c) == zoom_complete)
2872             ZOOM_connection_remove_task (c);
2873         break;
2874     case Z_APDU_scanResponse:
2875         scan_response (c, apdu->u.scanResponse);
2876         ZOOM_connection_remove_task (c);
2877         break;
2878     case Z_APDU_extendedServicesResponse:
2879         es_response (c, apdu->u.extendedServicesResponse);
2880         ZOOM_connection_remove_task (c);
2881         break;
2882     case Z_APDU_close:
2883         if (c->reconnect_ok)
2884         {
2885             do_close(c);
2886             c->tasks->running = 0;
2887             ZOOM_connection_insert_task (c, ZOOM_TASK_CONNECT);
2888         }
2889         else
2890         {
2891             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, 0);
2892             do_close(c);
2893         }
2894         break;
2895     default:
2896         set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
2897         do_close(c);
2898     }
2899 }
2900
2901 #if HAVE_XML2
2902 static void handle_srw_response(ZOOM_connection c,
2903                                 Z_SRW_searchRetrieveResponse *res)
2904 {
2905     ZOOM_resultset resultset = 0;
2906     int i;
2907     NMEM nmem;
2908     ZOOM_Event event;
2909
2910     if (!c->tasks)
2911         return;
2912
2913     if (c->tasks->which == ZOOM_TASK_SEARCH)
2914         resultset = c->tasks->u.search.resultset;
2915     else if (c->tasks->which == ZOOM_TASK_RETRIEVE)
2916         resultset = c->tasks->u.retrieve.resultset;
2917     else
2918         return ;
2919
2920     event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
2921     ZOOM_connection_put_event(c, event);
2922
2923     resultset->size = 0;
2924
2925     yaz_log(LOG_DEBUG, "got SRW response OK");
2926
2927     if (res->numberOfRecords)
2928         resultset->size = *res->numberOfRecords;
2929
2930     for (i = 0; i<res->num_records; i++)
2931     {
2932         int pos;
2933
2934         Z_NamePlusRecord *npr = (Z_NamePlusRecord *)
2935             odr_malloc(c->odr_in, sizeof(Z_NamePlusRecord));
2936
2937         if (res->records[i].recordPosition &&
2938             *res->records[i].recordPosition > 0)
2939             pos = *res->records[i].recordPosition - 1;
2940         else
2941             pos = resultset->start + i;
2942
2943         npr->databaseName = 0;
2944         npr->which = Z_NamePlusRecord_databaseRecord;
2945         npr->u.databaseRecord = (Z_External *)
2946             odr_malloc(c->odr_in, sizeof(Z_External));
2947         npr->u.databaseRecord->descriptor = 0;
2948         npr->u.databaseRecord->direct_reference =
2949             yaz_oidval_to_z3950oid(c->odr_in, CLASS_RECSYN, VAL_TEXT_XML);
2950         npr->u.databaseRecord->which = Z_External_octet;
2951         npr->u.databaseRecord->u.octet_aligned = (Odr_oct *)
2952             odr_malloc(c->odr_in, sizeof(Odr_oct));
2953         npr->u.databaseRecord->u.octet_aligned->buf =
2954             res->records[i].recordData_buf;
2955         npr->u.databaseRecord->u.octet_aligned->len =
2956             npr->u.databaseRecord->u.octet_aligned->size =
2957             res->records[i].recordData_len;
2958         record_cache_add (resultset, npr, pos);
2959     }
2960     if (res->num_diagnostics > 0)
2961     {
2962         const char *code = res->diagnostics[0].code;
2963         if (code)
2964         {
2965             int code_int = 0;
2966             const char *cp;
2967             if ((cp = strrchr(code, '/')))
2968                 code_int = atoi(cp+1);
2969             set_dset_error(c, code_int, code,
2970                            res->diagnostics[0].details, 0);
2971         }
2972     }
2973     nmem = odr_extract_mem(c->odr_in);
2974     nmem_transfer(resultset->odr->mem, nmem);
2975     nmem_destroy(nmem);
2976 }
2977 #endif
2978
2979 #if HAVE_XML2
2980 static void handle_http(ZOOM_connection c, Z_HTTP_Response *hres)
2981 {
2982     int ret = -1;
2983     const char *content_type = z_HTTP_header_lookup(hres->headers,
2984                                                     "Content-Type");
2985     const char *connection_head = z_HTTP_header_lookup(hres->headers,
2986                                                        "Connection");
2987     c->mask = 0;
2988     yaz_log (LOG_DEBUG, "handle_http");
2989
2990     if (content_type && !yaz_strcmp_del("text/xml", content_type, "; "))
2991     {
2992         Z_SOAP *soap_package = 0;
2993         ODR o = c->odr_in;
2994         Z_SOAP_Handler soap_handlers[2] = {
2995             {"http://www.loc.gov/zing/srw/", 0,
2996              (Z_SOAP_fun) yaz_srw_codec},
2997             {0, 0, 0}
2998         };
2999         ret = z_soap_codec(o, &soap_package,
3000                            &hres->content_buf, &hres->content_len,
3001                            soap_handlers);
3002         if (!ret && soap_package->which == Z_SOAP_generic &&
3003             soap_package->u.generic->no == 0)
3004         {
3005             Z_SRW_PDU *sr = soap_package->u.generic->p;
3006             if (sr->which == Z_SRW_searchRetrieve_response)
3007                 handle_srw_response(c, sr->u.response);
3008             else
3009                 ret = -1;
3010         }
3011         else if (!ret && (soap_package->which == Z_SOAP_fault
3012                           || soap_package->which == Z_SOAP_error))
3013         {
3014             set_HTTP_error(c, hres->code,
3015                            soap_package->u.fault->fault_code,
3016                            soap_package->u.fault->fault_string);
3017         }
3018         else
3019             ret = -1;
3020     }
3021     if (ret)
3022     {
3023         if (hres->code != 200)
3024             set_HTTP_error(c, hres->code, 0, 0);
3025         else
3026             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3027         do_close (c);
3028     }
3029     ZOOM_connection_remove_task(c);
3030     if (!strcmp(hres->version, "1.0"))
3031     {
3032         /* HTTP 1.0: only if Keep-Alive we stay alive.. */
3033         if (!connection_head || strcmp(connection_head, "Keep-Alive"))
3034             do_close(c);
3035     }
3036     else
3037     {
3038         /* HTTP 1.1: only if no close we stay alive .. */
3039         if (connection_head && !strcmp(connection_head, "close"))
3040             do_close(c);
3041     }
3042 }
3043 #endif
3044
3045 static int do_read (ZOOM_connection c)
3046 {
3047     int r, more;
3048     ZOOM_Event event;
3049
3050     event = ZOOM_Event_create (ZOOM_EVENT_RECV_DATA);
3051     ZOOM_connection_put_event (c, event);
3052
3053     r = cs_get (c->cs, &c->buf_in, &c->len_in);
3054     more = cs_more(c->cs);
3055     yaz_log (LOG_DEBUG, "do_read len=%d more=%d", r, more);
3056     if (r == 1)
3057         return 0;
3058     if (r <= 0)
3059     {
3060         if (c->reconnect_ok)
3061         {
3062             do_close (c);
3063             c->reconnect_ok = 0;
3064             yaz_log (LOG_DEBUG, "reconnect read");
3065             c->tasks->running = 0;
3066             ZOOM_connection_insert_task (c, ZOOM_TASK_CONNECT);
3067         }
3068         else
3069         {
3070             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, 0);
3071             do_close (c);
3072         }
3073     }
3074     else
3075     {
3076         Z_GDU *gdu;
3077         ZOOM_Event event;
3078
3079         odr_reset (c->odr_in);
3080         odr_setbuf (c->odr_in, c->buf_in, r, 0);
3081         event = ZOOM_Event_create (ZOOM_EVENT_RECV_APDU);
3082         ZOOM_connection_put_event (c, event);
3083
3084         if (!z_GDU (c->odr_in, &gdu, 0, 0))
3085         {
3086             int x;
3087             int err = odr_geterrorx(c->odr_in, &x);
3088             char msg[60];
3089             const char *element = odr_getelement(c->odr_in);
3090             sprintf (msg, "ODR code %d:%d element=%-20s",
3091                      err, x, element ? element : "<unknown>");
3092             set_ZOOM_error(c, ZOOM_ERROR_DECODE, msg);
3093             do_close (c);
3094         }
3095         else if (gdu->which == Z_GDU_Z3950)
3096             handle_apdu (c, gdu->u.z3950);
3097         else if (gdu->which == Z_GDU_HTTP_Response)
3098         {
3099 #if HAVE_XML2
3100             handle_http (c, gdu->u.HTTP_Response);
3101 #else
3102             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3103             do_close (c);
3104 #endif
3105         }
3106         c->reconnect_ok = 0;
3107     }
3108     return 1;
3109 }
3110
3111 static zoom_ret do_write_ex (ZOOM_connection c, char *buf_out, int len_out)
3112 {
3113     int r;
3114     ZOOM_Event event;
3115
3116     event = ZOOM_Event_create(ZOOM_EVENT_SEND_DATA);
3117     ZOOM_connection_put_event (c, event);
3118
3119     yaz_log (LOG_DEBUG, "do_write_ex len=%d", len_out);
3120     if ((r=cs_put (c->cs, buf_out, len_out)) < 0)
3121     {
3122         if (c->reconnect_ok)
3123         {
3124             do_close (c);
3125             c->reconnect_ok = 0;
3126             yaz_log (LOG_DEBUG, "reconnect write");
3127             c->tasks->running = 0;
3128             ZOOM_connection_insert_task (c, ZOOM_TASK_CONNECT);
3129             return zoom_pending;
3130         }
3131         if (c->state == STATE_CONNECTING)
3132             set_ZOOM_error(c, ZOOM_ERROR_CONNECT, 0);
3133         else
3134             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, 0);
3135         do_close (c);
3136         return zoom_complete;
3137     }
3138     else if (r == 1)
3139     {
3140         c->mask = ZOOM_SELECT_EXCEPT;
3141         if (c->cs->io_pending & CS_WANT_WRITE)
3142             c->mask += ZOOM_SELECT_WRITE;
3143         if (c->cs->io_pending & CS_WANT_READ)
3144             c->mask += ZOOM_SELECT_READ;
3145         yaz_log (LOG_DEBUG, "do_write_ex 1 mask=%d", c->mask);
3146     }
3147     else
3148     {
3149         c->mask = ZOOM_SELECT_READ|ZOOM_SELECT_EXCEPT;
3150         yaz_log (LOG_DEBUG, "do_write_ex 2 mask=%d", c->mask);
3151     }
3152     return zoom_pending;
3153 }
3154
3155 static zoom_ret do_write(ZOOM_connection c)
3156 {
3157     return do_write_ex (c, c->buf_out, c->len_out);
3158 }
3159
3160
3161 ZOOM_API(const char *)
3162 ZOOM_connection_option_get (ZOOM_connection c, const char *key)
3163 {
3164     return ZOOM_options_get (c->options, key);
3165 }
3166
3167 ZOOM_API(void)
3168 ZOOM_connection_option_set (ZOOM_connection c, const char *key,
3169                                   const char *val)
3170 {
3171     ZOOM_options_set (c->options, key, val);
3172 }
3173
3174 ZOOM_API(const char *)
3175 ZOOM_resultset_option_get (ZOOM_resultset r, const char *key)
3176 {
3177     return ZOOM_options_get (r->options, key);
3178 }
3179
3180 ZOOM_API(void)
3181 ZOOM_resultset_option_set (ZOOM_resultset r, const char *key,
3182                                   const char *val)
3183 {
3184     ZOOM_options_set (r->options, key, val);
3185 }
3186
3187
3188 ZOOM_API(int)
3189 ZOOM_connection_errcode (ZOOM_connection c)
3190 {
3191     return ZOOM_connection_error (c, 0, 0);
3192 }
3193
3194 ZOOM_API(const char *)
3195 ZOOM_connection_errmsg (ZOOM_connection c)
3196 {
3197     const char *msg;
3198     ZOOM_connection_error (c, &msg, 0);
3199     return msg;
3200 }
3201
3202 ZOOM_API(const char *)
3203 ZOOM_connection_addinfo (ZOOM_connection c)
3204 {
3205     const char *addinfo;
3206     ZOOM_connection_error (c, 0, &addinfo);
3207     return addinfo;
3208 }
3209
3210 ZOOM_API(const char *)
3211 ZOOM_diag_str (int error)
3212 {
3213     switch (error)
3214     {
3215     case ZOOM_ERROR_NONE:
3216         return "No error";
3217     case ZOOM_ERROR_CONNECT:
3218         return "Connect failed";
3219     case ZOOM_ERROR_MEMORY:
3220         return "Out of memory";
3221     case ZOOM_ERROR_ENCODE:
3222         return "Encoding failed";
3223     case ZOOM_ERROR_DECODE:
3224         return "Decoding failed";
3225     case ZOOM_ERROR_CONNECTION_LOST:
3226         return "Connection lost";
3227     case ZOOM_ERROR_INIT:
3228         return "Init rejected";
3229     case ZOOM_ERROR_INTERNAL:
3230         return "Internal failure";
3231     case ZOOM_ERROR_TIMEOUT:
3232         return "Timeout";
3233     case ZOOM_ERROR_UNSUPPORTED_PROTOCOL:
3234         return "Unsupported protocol";
3235     case ZOOM_ERROR_UNSUPPORTED_QUERY:
3236         return "Unsupported query type";
3237     default:
3238         return diagbib1_str (error);
3239     }
3240 }
3241
3242 ZOOM_API(int)
3243 ZOOM_connection_error_x (ZOOM_connection c, const char **cp,
3244                          const char **addinfo, const char **diagset)
3245 {
3246     int error = c->error;
3247     if (cp)
3248     {
3249         if (!c->diagset || !strcmp(c->diagset, "ZOOM"))
3250             *cp = ZOOM_diag_str(error);
3251         else if (!strcmp(c->diagset, "HTTP"))
3252             *cp = z_HTTP_errmsg(c->error);
3253         else if (!strcmp(c->diagset, "Bib-1"))
3254             *cp = ZOOM_diag_str(error);
3255         else if (!strcmp(c->diagset, "info:srw/diagnostic/1"))
3256             *cp = yaz_diag_srw_str(c->error);
3257         else
3258             *cp = "Unknown error and diagnostic set";
3259     }
3260     if (addinfo)
3261         *addinfo = c->addinfo ? c->addinfo : "";
3262     if (diagset)
3263         *diagset = c->diagset ? c->diagset : "";
3264     return c->error;
3265 }
3266
3267 ZOOM_API(int)
3268 ZOOM_connection_error (ZOOM_connection c, const char **cp,
3269                        const char **addinfo)
3270 {
3271     return ZOOM_connection_error_x(c, cp, addinfo, 0);
3272 }
3273
3274 static int ZOOM_connection_do_io(ZOOM_connection c, int mask)
3275 {
3276     ZOOM_Event event = 0;
3277     int r = cs_look(c->cs);
3278     yaz_log (LOG_DEBUG, "ZOOM_connection_do_io c=%p mask=%d cs_look=%d",
3279              c, mask, r);
3280
3281     if (r == CS_NONE)
3282     {
3283         event = ZOOM_Event_create (ZOOM_EVENT_CONNECT);
3284         set_ZOOM_error(c, ZOOM_ERROR_CONNECT, 0);
3285         do_close (c);
3286         ZOOM_connection_put_event (c, event);
3287     }
3288     else if (r == CS_CONNECT)
3289     {
3290         int ret;
3291         event = ZOOM_Event_create (ZOOM_EVENT_CONNECT);
3292
3293         ret = cs_rcvconnect (c->cs);
3294         yaz_log (LOG_DEBUG, "cs_rcvconnect returned %d", ret);
3295         if (ret == 1)
3296         {
3297             c->mask = ZOOM_SELECT_EXCEPT;
3298             if (c->cs->io_pending & CS_WANT_WRITE)
3299                 c->mask += ZOOM_SELECT_WRITE;
3300             if (c->cs->io_pending & CS_WANT_READ)
3301                 c->mask += ZOOM_SELECT_READ;
3302             ZOOM_connection_put_event (c, event);
3303         }
3304         else if (ret == 0)
3305         {
3306             ZOOM_connection_put_event (c, event);
3307             if (c->proto == PROTO_Z3950)
3308                 ZOOM_connection_send_init(c);
3309             else
3310             {
3311                 /* no init request for SRW .. */
3312                 assert (c->tasks->which == ZOOM_TASK_CONNECT);
3313                 ZOOM_connection_remove_task (c);
3314                 c->mask = 0;
3315                 ZOOM_connection_exec_task (c);
3316             }
3317             c->state = STATE_ESTABLISHED;
3318         }
3319         else
3320         {
3321             set_ZOOM_error(c, ZOOM_ERROR_CONNECT, 0);
3322             do_close (c);
3323             ZOOM_connection_put_event (c, event);
3324         }
3325     }
3326     else
3327     {
3328         if (mask & ZOOM_SELECT_READ)
3329             do_read (c);
3330         if (c->cs && (mask & ZOOM_SELECT_WRITE))
3331             do_write (c);
3332     }
3333     return 1;
3334 }
3335
3336 ZOOM_API(int)
3337 ZOOM_connection_last_event(ZOOM_connection cs)
3338 {
3339     if (!cs)
3340         return ZOOM_EVENT_NONE;
3341     return cs->last_event;
3342 }
3343
3344 ZOOM_API(int)
3345 ZOOM_event (int no, ZOOM_connection *cs)
3346 {
3347     int timeout = 5000;
3348 #if HAVE_SYS_POLL_H
3349     struct pollfd pollfds[1024];
3350     ZOOM_connection poll_cs[1024];
3351 #else
3352     struct timeval tv;
3353     fd_set input, output, except;
3354 #endif
3355     int i, r, nfds;
3356     int max_fd = 0;
3357
3358     for (i = 0; i<no; i++)
3359     {
3360         ZOOM_connection c = cs[i];
3361         ZOOM_Event event;
3362         if (c && (event = ZOOM_connection_get_event(c)))
3363         {
3364             ZOOM_Event_destroy (event);
3365             return i+1;
3366         }
3367     }
3368     for (i = 0; i<no; i++)
3369     {
3370         ZOOM_connection c = cs[i];
3371         ZOOM_Event event;
3372         if (c && ZOOM_connection_exec_task (c))
3373         {
3374             if ((event = ZOOM_connection_get_event(c)))
3375             {
3376                 ZOOM_Event_destroy (event);
3377                 return i+1;
3378             }
3379         }
3380     }
3381 #if HAVE_SYS_POLL_H
3382
3383 #else
3384     FD_ZERO (&input);
3385     FD_ZERO (&output);
3386     FD_ZERO (&except);
3387 #endif
3388     nfds = 0;
3389     for (i = 0; i<no; i++)
3390     {
3391         ZOOM_connection c = cs[i];
3392         int fd, mask;
3393         int this_timeout;
3394
3395         if (!c)
3396             continue;
3397         fd = z3950_connection_socket(c);
3398         mask = z3950_connection_mask(c);
3399
3400         if (fd == -1)
3401             continue;
3402         if (max_fd < fd)
3403             max_fd = fd;
3404
3405         this_timeout = ZOOM_options_get_int (c->options, "timeout", -1);
3406         if (this_timeout != -1 && this_timeout < timeout)
3407             timeout = this_timeout;
3408 #if HAVE_SYS_POLL_H
3409         if (mask)
3410         {
3411             short poll_events = 0;
3412
3413             if (mask & ZOOM_SELECT_READ)
3414                 poll_events += POLLIN;
3415             if (mask & ZOOM_SELECT_WRITE)
3416                 poll_events += POLLOUT;
3417             if (mask & ZOOM_SELECT_EXCEPT)
3418                 poll_events += POLLERR;
3419             pollfds[nfds].fd = fd;
3420             pollfds[nfds].events = poll_events;
3421             pollfds[nfds].revents = 0;
3422             poll_cs[nfds] = c;
3423             nfds++;
3424         }
3425 #else
3426         if (mask & ZOOM_SELECT_READ)
3427         {
3428             FD_SET (fd, &input);
3429             nfds++;
3430         }
3431         if (mask & ZOOM_SELECT_WRITE)
3432         {
3433             FD_SET (fd, &output);
3434             nfds++;
3435         }
3436         if (mask & ZOOM_SELECT_EXCEPT)
3437         {
3438             FD_SET (fd, &except);
3439             nfds++;
3440         }
3441 #endif
3442     }
3443     if (timeout >= 5000)
3444         timeout = 30;
3445
3446     if (!nfds)
3447         return 0;
3448
3449 #if HAVE_SYS_POLL_H
3450     r = poll (pollfds, nfds, timeout * 1000);
3451     for (i = 0; i<nfds; i++)
3452     {
3453         ZOOM_connection c = poll_cs[i];
3454         if (r && c->mask)
3455         {
3456             int mask = 0;
3457             if (pollfds[i].revents & POLLIN)
3458                 mask += ZOOM_SELECT_READ;
3459             if (pollfds[i].revents & POLLOUT)
3460                 mask += ZOOM_SELECT_WRITE;
3461             if (pollfds[i].revents & POLLERR)
3462                 mask += ZOOM_SELECT_EXCEPT;
3463             if (mask)
3464                 ZOOM_connection_do_io(c, mask);
3465         }
3466         else if (r == 0 && c->mask)
3467         {
3468             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_TIMEOUT);
3469             /* timeout and this connection was waiting */
3470             set_ZOOM_error(c, ZOOM_ERROR_TIMEOUT, 0);
3471             do_close (c);
3472             ZOOM_connection_put_event(c, event);
3473         }
3474     }
3475 #else
3476     tv.tv_sec = timeout;
3477     tv.tv_usec = 0;
3478     yaz_log (LOG_DEBUG, "select start");
3479     r = select (max_fd+1, &input, &output, &except, &tv);
3480     yaz_log (LOG_DEBUG, "select stop, returned r=%d", r);
3481     for (i = 0; i<no; i++)
3482     {
3483         ZOOM_connection c = cs[i];
3484         int fd, mask;
3485
3486         if (!c)
3487             continue;
3488         fd = z3950_connection_socket(c);
3489         mask = 0;
3490         if (r && c->mask)
3491         {
3492             /* no timeout and real socket */
3493             if (FD_ISSET(fd, &input))
3494                 mask += ZOOM_SELECT_READ;
3495             if (FD_ISSET(fd, &output))
3496                 mask += ZOOM_SELECT_WRITE;
3497             if (FD_ISSET(fd, &except))
3498                 mask += ZOOM_SELECT_EXCEPT;
3499             if (mask)
3500                 ZOOM_connection_do_io(c, mask);
3501         }
3502         if (r == 0 && c->mask)
3503         {
3504             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_TIMEOUT);
3505             /* timeout and this connection was waiting */
3506             set_ZOOM_error(c, ZOOM_ERROR_TIMEOUT, 0);
3507             do_close (c);
3508             yaz_log (LOG_DEBUG, "timeout");
3509             ZOOM_connection_put_event(c, event);
3510         }
3511     }
3512 #endif
3513     for (i = 0; i<no; i++)
3514     {
3515         ZOOM_connection c = cs[i];
3516         ZOOM_Event event;
3517         if (c && (event = ZOOM_connection_get_event(c)))
3518         {
3519             ZOOM_Event_destroy (event);
3520             return i+1;
3521         }
3522     }
3523     return 0;
3524 }