src/zoom-c.c

   1 /*
   2  * Copyright (C) 1995-2005, Index Data ApS
   3  * See the file LICENSE for details.
   4  *
   5  * $Id: zoom-c.c,v 1.37 2005-01-16 22:01:13 adam Exp $
   6  */
   7 /**
   8  * \file zoom-c.c
   9  * \brief Implements ZOOM C interface.
  10  */
  11
  12 #include <assert.h>
  13 #include <string.h>
  14 #include "zoom-p.h"
  15
  16 #include <yaz/yaz-util.h>
  17 #include <yaz/xmalloc.h>
  18 #include <yaz/otherinfo.h>
  19 #include <yaz/log.h>
  20 #include <yaz/pquery.h>
  21 #include <yaz/marcdisp.h>
  22 #include <yaz/diagbib1.h>
  23 #include <yaz/charneg.h>
  24 #include <yaz/ill.h>
  25 #include <yaz/srw.h>
  26
  27 #if HAVE_SYS_TYPES_H
  28 #include <sys/types.h>
  29 #endif
  30 #if HAVE_SYS_TIME_H
  31 #include <sys/time.h>
  32 #endif
  33 #if HAVE_SYS_POLL_H
  34 #include <sys/poll.h>
  35 #endif
  36 #if HAVE_SYS_SELECT_H
  37 #include <sys/select.h>
  38 #endif
  39 #ifdef WIN32
  40 #include <winsock.h>
  41 #endif
  42
  43 static int log_level = 0;
  44 static int log_level_initialized = 0;
  45
  46 typedef enum {
  47     zoom_pending,
  48     zoom_complete
  49 } zoom_ret;
  50
  51 static zoom_ret ZOOM_connection_send_init (ZOOM_connection c);
  52 static zoom_ret do_write_ex (ZOOM_connection c, char *buf_out, int len_out);
  53
  54 static ZOOM_Event ZOOM_Event_create (int kind)
  55 {
  56     ZOOM_Event event = (ZOOM_Event) xmalloc (sizeof(*event));
  57     event->kind = kind;
  58     event->next = 0;
  59     event->prev = 0;
  60     return event;
  61 }
  62
  63 static void ZOOM_Event_destroy (ZOOM_Event event)
  64 {
  65     xfree (event);
  66 }
  67
  68 static void ZOOM_connection_put_event (ZOOM_connection c, ZOOM_Event event)
  69 {
  70     if (c->m_queue_back)
  71     {
  72         c->m_queue_back->prev = event;
  73         assert (c->m_queue_front);
  74     }
  75     else
  76     {
  77         assert (!c->m_queue_front);
  78         c->m_queue_front = event;
  79     }
  80     event->next = c->m_queue_back;
  81     event->prev = 0;
  82     c->m_queue_back = event;
  83 }
  84
  85 static ZOOM_Event ZOOM_connection_get_event(ZOOM_connection c)
  86 {
  87     ZOOM_Event event = c->m_queue_front;
  88     if (!event)
  89     {
  90         c->last_event = ZOOM_EVENT_NONE;
  91         return 0;
  92     }
  93     assert (c->m_queue_back);
  94     c->m_queue_front = event->prev;
  95     if (c->m_queue_front)
  96     {
  97         assert (c->m_queue_back);
  98         c->m_queue_front->next = 0;
  99     }
 100     else
 101         c->m_queue_back = 0;
 102     c->last_event = event->kind;
 103     return event;
 104 }
 105
 106
 107 static void set_dset_error (ZOOM_connection c, int error,
 108                             const char *dset,
 109                             const char *addinfo, const char *addinfo2)
 110 {
 111     char *cp;
 112     if (!log_level_initialized)
 113     {
 114         log_level = yaz_log_module_level("zoom");
 115         log_level_initialized = 1;
 116     }
 117
 118     xfree (c->addinfo);
 119     c->addinfo = 0;
 120     c->error = error;
 121     if (!c->diagset || strcmp(dset, c->diagset))
 122     {
 123         xfree(c->diagset);
 124         c->diagset = xstrdup(dset);
 125         /* remove integer part from SRW diagset .. */
 126         if ((cp = strrchr(c->diagset, '/')))
 127            *cp = '\0';
 128     }
 129     if (addinfo && addinfo2)
 130     {
 131         c->addinfo = (char*) xmalloc(strlen(addinfo) + strlen(addinfo2) + 2);
 132         strcpy(c->addinfo, addinfo);
 133         strcat(c->addinfo, addinfo2);
 134     }
 135     else if (addinfo)
 136         c->addinfo = xstrdup(addinfo);
 137     if (error)
 138         yaz_log(log_level, "Error %s %s:%d %s %s",
 139                 c->host_port ? c->host_port : "<>", dset, error,
 140                 addinfo ? addinfo : "",
 141                 addinfo2 ? addinfo2 : "");
 142 }
 143
 144 #if HAVE_XML2
 145 static void set_HTTP_error (ZOOM_connection c, int error,
 146                             const char *addinfo, const char *addinfo2)
 147 {
 148     set_dset_error(c, error, "HTTP", addinfo, addinfo2);
 149 }
 150 #endif
 151
 152 static void set_ZOOM_error (ZOOM_connection c, int error,
 153                             const char *addinfo)
 154 {
 155     set_dset_error(c, error, "ZOOM", addinfo, 0);
 156 }
 157
 158 static void clear_error (ZOOM_connection c)
 159 {
 160
 161     switch (c->error)
 162     {
 163     case ZOOM_ERROR_CONNECT:
 164     case ZOOM_ERROR_MEMORY:
 165     case ZOOM_ERROR_DECODE:
 166     case ZOOM_ERROR_CONNECTION_LOST:
 167     case ZOOM_ERROR_INIT:
 168     case ZOOM_ERROR_INTERNAL:
 169     case ZOOM_ERROR_UNSUPPORTED_PROTOCOL:
 170         break;
 171     default:
 172         set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 173     }
 174 }
 175
 176 ZOOM_task ZOOM_connection_add_task (ZOOM_connection c, int which)
 177 {
 178     ZOOM_task *taskp = &c->tasks;
 179     while (*taskp)
 180         taskp = &(*taskp)->next;
 181     *taskp = (ZOOM_task) xmalloc (sizeof(**taskp));
 182     (*taskp)->running = 0;
 183     (*taskp)->which = which;
 184     (*taskp)->next = 0;
 185     clear_error (c);
 186     return *taskp;
 187 }
 188
 189 ZOOM_task ZOOM_connection_insert_task (ZOOM_connection c, int which)
 190 {
 191     ZOOM_task task = (ZOOM_task) xmalloc (sizeof(*task));
 192
 193     task->next = c->tasks;
 194     c->tasks = task;
 195
 196     task->running = 0;
 197     task->which = which;
 198     clear_error (c);
 199     return task;
 200 }
 201
 202 void ZOOM_connection_remove_task (ZOOM_connection c)
 203 {
 204     ZOOM_task task = c->tasks;
 205
 206     if (task)
 207     {
 208         c->tasks = task->next;
 209         switch (task->which)
 210         {
 211         case ZOOM_TASK_SEARCH:
 212             ZOOM_resultset_destroy (task->u.search.resultset);
 213             break;
 214         case ZOOM_TASK_RETRIEVE:
 215             ZOOM_resultset_destroy (task->u.retrieve.resultset);
 216             break;
 217         case ZOOM_TASK_CONNECT:
 218             break;
 219         case ZOOM_TASK_SCAN:
 220             ZOOM_scanset_destroy (task->u.scan.scan);
 221             break;
 222         case ZOOM_TASK_PACKAGE:
 223             ZOOM_package_destroy (task->u.package);
 224             break;
 225         case ZOOM_TASK_SORT:
 226             ZOOM_resultset_destroy (task->u.sort.resultset);
 227             ZOOM_query_destroy(task->u.sort.q);
 228             break;
 229         default:
 230             assert (0);
 231         }
 232         xfree (task);
 233     }
 234 }
 235
 236 static int ZOOM_connection_exec_task (ZOOM_connection c);
 237
 238 void ZOOM_connection_remove_tasks (ZOOM_connection c)
 239 {
 240     while (c->tasks)
 241         ZOOM_connection_remove_task(c);
 242 }
 243
 244 static ZOOM_record record_cache_lookup (ZOOM_resultset r, int pos);
 245
 246 ZOOM_API(ZOOM_connection)
 247 ZOOM_connection_create (ZOOM_options options)
 248 {
 249     ZOOM_connection c = (ZOOM_connection) xmalloc (sizeof(*c));
 250
 251     if (!log_level_initialized)
 252     {
 253         log_level = yaz_log_module_level("zoom");
 254         log_level_initialized = 1;
 255     }
 256
 257     c->proto = PROTO_Z3950;
 258     c->cs = 0;
 259     c->mask = 0;
 260     c->reconnect_ok = 0;
 261     c->state = STATE_IDLE;
 262     c->addinfo = 0;
 263     c->diagset = 0;
 264     set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 265     c->buf_in = 0;
 266     c->len_in = 0;
 267     c->buf_out = 0;
 268     c->len_out = 0;
 269     c->resultsets = 0;
 270
 271     c->options = ZOOM_options_create_with_parent(options);
 272
 273     c->host_port = 0;
 274     c->path = 0;
 275     c->proxy = 0;
 276
 277     c->charset = c->lang = 0;
 278
 279     c->cookie_out = 0;
 280     c->cookie_in = 0;
 281     c->client_IP = 0;
 282     c->tasks = 0;
 283
 284     c->odr_in = odr_createmem (ODR_DECODE);
 285     c->odr_out = odr_createmem (ODR_ENCODE);
 286
 287     c->async = 0;
 288     c->support_named_resultsets = 0;
 289     c->last_event = ZOOM_EVENT_NONE;
 290
 291     c->m_queue_front = 0;
 292     c->m_queue_back = 0;
 293     return c;
 294 }
 295
 296 /* set database names. Take local databases (if set); otherwise
 297    take databases given in ZURL (if set); otherwise use Default */
 298 static char **set_DatabaseNames (ZOOM_connection con, ZOOM_options options,
 299                                  int *num)
 300 {
 301     char **databaseNames;
 302     const char *c;
 303     int no = 2;
 304     const char *cp = ZOOM_options_get (options, "databaseName");
 305
 306     if (!cp || !*cp)
 307     {
 308         if (strncmp (con->host_port, "unix:", 5) == 0)
 309             cp = strchr (con->host_port+5, ':');
 310         else
 311             cp = strchr (con->host_port, '/');
 312         if (cp)
 313             cp++;
 314     }
 315     if (cp)
 316     {
 317         c = cp;
 318         while ((c = strchr(c, '+')))
 319         {
 320             c++;
 321             no++;
 322         }
 323     }
 324     else
 325         cp = "Default";
 326     databaseNames = (char**)
 327         odr_malloc (con->odr_out, no * sizeof(*databaseNames));
 328     no = 0;
 329     while (*cp)
 330     {
 331         c = strchr (cp, '+');
 332         if (!c)
 333             c = cp + strlen(cp);
 334         else if (c == cp)
 335         {
 336             cp++;
 337             continue;
 338         }
 339         /* cp ptr to first char of db name, c is char
 340            following db name */
 341         databaseNames[no] = (char*) odr_malloc (con->odr_out, 1+c-cp);
 342         memcpy (databaseNames[no], cp, c-cp);
 343         databaseNames[no++][c-cp] = '\0';
 344         cp = c;
 345         if (*cp)
 346             cp++;
 347     }
 348     databaseNames[no] = NULL;
 349     *num = no;
 350     return databaseNames;
 351 }
 352
 353 ZOOM_API(ZOOM_connection)
 354 ZOOM_connection_new (const char *host, int portnum)
 355 {
 356     ZOOM_connection c = ZOOM_connection_create (0);
 357
 358     ZOOM_connection_connect (c, host, portnum);
 359     return c;
 360 }
 361
 362 ZOOM_API(void)
 363 ZOOM_connection_connect(ZOOM_connection c,
 364                         const char *host, int portnum)
 365 {
 366     const char *val;
 367     ZOOM_task task;
 368
 369     if (!log_level_initialized)
 370     {
 371         log_level = yaz_log_module_level("zoom");
 372         log_level_initialized = 1;
 373     }
 374
 375     if (c->cs)
 376     {
 377         yaz_log (log_level, "reconnect");
 378         c->reconnect_ok = 1;
 379         return;
 380     }
 381     yaz_log(log_level, "connect");
 382     xfree (c->proxy);
 383     val = ZOOM_options_get (c->options, "proxy");
 384     if (val && *val)
 385         c->proxy = xstrdup (val);
 386     else
 387         c->proxy = 0;
 388
 389     xfree (c->charset);
 390     val = ZOOM_options_get (c->options, "charset");
 391     if (val && *val)
 392         c->charset = xstrdup (val);
 393     else
 394         c->charset = 0;
 395
 396     xfree (c->lang);
 397     val = ZOOM_options_get (c->options, "lang");
 398     if (val && *val)
 399         c->lang = xstrdup (val);
 400     else
 401         c->lang = 0;
 402
 403     xfree (c->host_port);
 404     if (portnum)
 405     {
 406         char hostn[128];
 407         sprintf (hostn, "%.80s:%d", host, portnum);
 408         c->host_port = xstrdup(hostn);
 409     }
 410     else
 411         c->host_port = xstrdup(host);
 412
 413     ZOOM_options_set(c->options, "host", c->host_port);
 414
 415     val = ZOOM_options_get (c->options, "cookie");
 416     if (val && *val)
 417         c->cookie_out = xstrdup (val);
 418
 419     val = ZOOM_options_get (c->options, "clientIP");
 420     if (val && *val)
 421         c->client_IP = xstrdup (val);
 422
 423     c->async = ZOOM_options_get_bool (c->options, "async", 0);
 424
 425     set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 426
 427     task = ZOOM_connection_add_task (c, ZOOM_TASK_CONNECT);
 428
 429     if (!c->async)
 430     {
 431         while (ZOOM_event (1, &c))
 432             ;
 433     }
 434 }
 435
 436 ZOOM_API(ZOOM_query)
 437 ZOOM_query_create(void)
 438 {
 439     ZOOM_query s = (ZOOM_query) xmalloc (sizeof(*s));
 440
 441     s->refcount = 1;
 442     s->z_query = 0;
 443     s->sort_spec = 0;
 444     s->odr = odr_createmem (ODR_ENCODE);
 445     s->query_string = 0;
 446
 447     return s;
 448 }
 449
 450 ZOOM_API(void)
 451 ZOOM_query_destroy(ZOOM_query s)
 452 {
 453     if (!s)
 454         return;
 455
 456     (s->refcount)--;
 457     yaz_log (log_level, "ZOOM_query_destroy count=%d", s->refcount);
 458     if (s->refcount == 0)
 459     {
 460         odr_destroy (s->odr);
 461         xfree (s);
 462     }
 463 }
 464
 465 ZOOM_API(int)
 466 ZOOM_query_prefix(ZOOM_query s, const char *str)
 467 {
 468     s->query_string = odr_strdup(s->odr, str);
 469     s->z_query = (Z_Query *) odr_malloc (s->odr, sizeof(*s->z_query));
 470     s->z_query->which = Z_Query_type_1;
 471     s->z_query->u.type_1 =  p_query_rpn(s->odr, PROTO_Z3950, str);
 472     if (!s->z_query->u.type_1)
 473     {
 474         s->z_query = 0;
 475         return -1;
 476     }
 477     return 0;
 478 }
 479
 480 ZOOM_API(int)
 481 ZOOM_query_cql(ZOOM_query s, const char *str)
 482 {
 483     Z_External *ext;
 484
 485     s->query_string = odr_strdup(s->odr, str);
 486
 487     ext = (Z_External *) odr_malloc(s->odr, sizeof(*ext));
 488     ext->direct_reference = odr_getoidbystr(s->odr, "1.2.840.10003.16.2");
 489     ext->indirect_reference = 0;
 490     ext->descriptor = 0;
 491     ext->which = Z_External_CQL;
 492     ext->u.cql = s->query_string;
 493
 494     s->z_query = (Z_Query *) odr_malloc (s->odr, sizeof(*s->z_query));
 495     s->z_query->which = Z_Query_type_104;
 496     s->z_query->u.type_104 =  ext;
 497
 498     return 0;
 499 }
 500
 501 ZOOM_API(int)
 502 ZOOM_query_sortby(ZOOM_query s, const char *criteria)
 503 {
 504     s->sort_spec = yaz_sort_spec (s->odr, criteria);
 505     if (!s->sort_spec)
 506         return -1;
 507     return 0;
 508 }
 509
 510 static zoom_ret do_write(ZOOM_connection c);
 511
 512 ZOOM_API(void)
 513 ZOOM_connection_destroy(ZOOM_connection c)
 514 {
 515     ZOOM_resultset r;
 516     if (!c)
 517         return;
 518     if (c->cs)
 519         cs_close (c->cs);
 520     for (r = c->resultsets; r; r = r->next)
 521         r->connection = 0;
 522
 523     xfree (c->buf_in);
 524     xfree (c->addinfo);
 525     xfree (c->diagset);
 526     odr_destroy (c->odr_in);
 527     odr_destroy (c->odr_out);
 528     ZOOM_options_destroy (c->options);
 529     ZOOM_connection_remove_tasks (c);
 530     xfree (c->host_port);
 531     xfree (c->path);
 532     xfree (c->proxy);
 533     xfree (c->charset);
 534     xfree (c->lang);
 535     xfree (c->cookie_out);
 536     xfree (c->cookie_in);
 537     xfree (c->client_IP);
 538     xfree (c);
 539 }
 540
 541 void ZOOM_resultset_addref (ZOOM_resultset r)
 542 {
 543     if (r)
 544     {
 545         (r->refcount)++;
 546         yaz_log (log_level, "ZOOM_resultset_addref r=%p count=%d",
 547                  r, r->refcount);
 548     }
 549 }
 550
 551 ZOOM_resultset ZOOM_resultset_create ()
 552 {
 553     ZOOM_resultset r = (ZOOM_resultset) xmalloc (sizeof(*r));
 554
 555     if (!log_level_initialized)
 556     {
 557         log_level = yaz_log_module_level("zoom");
 558         log_level_initialized = 1;
 559     }
 560
 561     yaz_log (log_level, "ZOOM_resultset_create r = %p", r);
 562     r->refcount = 1;
 563     r->size = 0;
 564     r->odr = odr_createmem (ODR_ENCODE);
 565     r->start = 0;
 566     r->piggyback = 1;
 567     r->setname = 0;
 568     r->schema = 0;
 569     r->count = 0;
 570     r->step = 0;
 571     r->record_cache = 0;
 572     r->r_sort_spec = 0;
 573     r->query = 0;
 574     r->connection = 0;
 575     r->next = 0;
 576     return r;
 577 }
 578
 579 ZOOM_API(ZOOM_resultset)
 580 ZOOM_connection_search_pqf(ZOOM_connection c, const char *q)
 581 {
 582     ZOOM_resultset r;
 583     ZOOM_query s = ZOOM_query_create();
 584
 585     ZOOM_query_prefix (s, q);
 586
 587     r = ZOOM_connection_search (c, s);
 588     ZOOM_query_destroy (s);
 589     return r;
 590 }
 591
 592 ZOOM_API(ZOOM_resultset)
 593 ZOOM_connection_search(ZOOM_connection c, ZOOM_query q)
 594 {
 595     ZOOM_resultset r = ZOOM_resultset_create ();
 596     ZOOM_task task;
 597     const char *cp;
 598
 599     r->r_sort_spec = q->sort_spec;
 600     r->query = q;
 601
 602     r->options = ZOOM_options_create_with_parent(c->options);
 603
 604     r->start = ZOOM_options_get_int(r->options, "start", 0);
 605     r->count = ZOOM_options_get_int(r->options, "count", 0);
 606     {
 607         /* If "presentChunk" is defined use that; otherwise "step" */
 608         const char *cp = ZOOM_options_get (r->options, "presentChunk");
 609         r->step = ZOOM_options_get_int(r->options,
 610                                        (cp != 0 ? "presentChunk": "step"), 0);
 611     }
 612     r->piggyback = ZOOM_options_get_bool (r->options, "piggyback", 1);
 613     cp = ZOOM_options_get (r->options, "setname");
 614     if (cp)
 615         r->setname = xstrdup(cp);
 616     cp = ZOOM_options_get (r->options, "schema");
 617     if (cp)
 618         r->schema = xstrdup(cp);
 619
 620     r->connection = c;
 621
 622     r->next = c->resultsets;
 623     c->resultsets = r;
 624
 625     if (c->host_port && c->proto == PROTO_HTTP)
 626     {
 627         if (!c->cs)
 628         {
 629             yaz_log(log_level, "NO COMSTACK");
 630             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 631         }
 632         else
 633         {
 634             yaz_log(log_level, "PREPARE FOR RECONNECT");
 635             c->reconnect_ok = 1;
 636         }
 637     }
 638
 639     task = ZOOM_connection_add_task (c, ZOOM_TASK_SEARCH);
 640     task->u.search.resultset = r;
 641     ZOOM_resultset_addref (r);
 642
 643     (q->refcount)++;
 644
 645     if (!c->async)
 646     {
 647         while (ZOOM_event (1, &c))
 648             ;
 649     }
 650     return r;
 651 }
 652
 653 ZOOM_API(void)
 654     ZOOM_resultset_sort(ZOOM_resultset r,
 655                         const char *sort_type, const char *sort_spec)
 656 {
 657     ZOOM_connection c = r->connection;
 658     ZOOM_task task;
 659
 660     if (!c)
 661         return;
 662
 663     if (c->host_port && c->proto == PROTO_HTTP)
 664     {
 665         if (!c->cs)
 666         {
 667             yaz_log(log_level, "NO COMSTACK");
 668             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 669         }
 670         else
 671         {
 672             yaz_log(log_level, "PREPARE FOR RECONNECT");
 673             c->reconnect_ok = 1;
 674         }
 675     }
 676
 677     ZOOM_resultset_cache_reset(r);
 678     task = ZOOM_connection_add_task (c, ZOOM_TASK_SORT);
 679     task->u.sort.resultset = r;
 680     task->u.sort.q = ZOOM_query_create();
 681     ZOOM_query_sortby(task->u.sort.q, sort_spec);
 682
 683     ZOOM_resultset_addref (r);
 684
 685     if (!c->async)
 686     {
 687         while (ZOOM_event (1, &c))
 688             ;
 689     }
 690 }
 691
 692 ZOOM_API(void)
 693     ZOOM_resultset_cache_reset(ZOOM_resultset r)
 694 {
 695     ZOOM_record_cache rc;
 696
 697     for (rc = r->record_cache; rc; rc = rc->next)
 698     {
 699         if (rc->rec.wrbuf_marc)
 700             wrbuf_free (rc->rec.wrbuf_marc, 1);
 701         if (rc->rec.wrbuf_iconv)
 702             wrbuf_free (rc->rec.wrbuf_iconv, 1);
 703         if (rc->rec.wrbuf_opac)
 704             wrbuf_free (rc->rec.wrbuf_opac, 1);
 705     }
 706     r->record_cache = 0;
 707 }
 708
 709 ZOOM_API(void)
 710 ZOOM_resultset_destroy(ZOOM_resultset r)
 711 {
 712     if (!r)
 713         return;
 714     (r->refcount)--;
 715     yaz_log (log_level, "ZOOM_resultset_destroy r = %p count=%d",
 716              r, r->refcount);
 717     if (r->refcount == 0)
 718     {
 719         ZOOM_resultset_cache_reset(r);
 720
 721         if (r->connection)
 722         {
 723             /* remove ourselves from the resultsets in connection */
 724             ZOOM_resultset *rp = &r->connection->resultsets;
 725             while (1)
 726             {
 727                 assert (*rp);   /* we must be in this list!! */
 728                 if (*rp == r)
 729                 {   /* OK, we're here - take us out of it */
 730                     *rp = (*rp)->next;
 731                     break;
 732                 }
 733                 rp = &(*rp)->next;
 734             }
 735         }
 736         ZOOM_query_destroy (r->query);
 737         ZOOM_options_destroy (r->options);
 738         odr_destroy (r->odr);
 739         xfree (r->setname);
 740         xfree (r->schema);
 741         xfree (r);
 742     }
 743 }
 744
 745 ZOOM_API(size_t)
 746 ZOOM_resultset_size (ZOOM_resultset r)
 747 {
 748     return r->size;
 749 }
 750
 751 static void do_close (ZOOM_connection c)
 752 {
 753     if (c->cs)
 754         cs_close(c->cs);
 755     c->cs = 0;
 756     c->mask = 0;
 757     c->state = STATE_IDLE;
 758 }
 759
 760 static void ZOOM_resultset_retrieve (ZOOM_resultset r,
 761                                      int force_sync, int start, int count)
 762 {
 763     ZOOM_task task;
 764     ZOOM_connection c;
 765     const char *cp;
 766
 767     if (!r)
 768         return;
 769     c = r->connection;
 770     if (!c)
 771         return;
 772
 773     if (c->host_port && c->proto == PROTO_HTTP)
 774     {
 775         if (!c->cs)
 776         {
 777             yaz_log(log_level, "NO COMSTACK");
 778             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 779         }
 780         else
 781         {
 782             yaz_log(log_level, "PREPARE FOR RECONNECT");
 783             c->reconnect_ok = 1;
 784         }
 785     }
 786     task = ZOOM_connection_add_task (c, ZOOM_TASK_RETRIEVE);
 787     task->u.retrieve.resultset = r;
 788     task->u.retrieve.start = start;
 789     task->u.retrieve.count = count;
 790
 791     cp = ZOOM_options_get (r->options, "schema");
 792     if (cp)
 793     {
 794         if (!r->schema || strcmp(r->schema, cp))
 795         {
 796             xfree(r->schema);
 797             r->schema = xstrdup(cp);
 798         }
 799     }
 800
 801     ZOOM_resultset_addref (r);
 802
 803     if (!r->connection->async || force_sync)
 804         while (r->connection && ZOOM_event (1, &r->connection))
 805             ;
 806 }
 807
 808 ZOOM_API(void)
 809 ZOOM_resultset_records (ZOOM_resultset r, ZOOM_record *recs,
 810                         size_t start, size_t count)
 811 {
 812     int force_present = 0;
 813
 814     if (!r)
 815         return ;
 816     if (count && recs)
 817         force_present = 1;
 818     ZOOM_resultset_retrieve (r, force_present, start, count);
 819     if (force_present)
 820     {
 821         size_t i;
 822         for (i = 0; i< count; i++)
 823             recs[i] = ZOOM_resultset_record_immediate (r, i+start);
 824     }
 825 }
 826
 827 static void get_cert(ZOOM_connection c)
 828 {
 829     char *cert_buf;
 830     int cert_len;
 831
 832     if (cs_get_peer_certificate_x509(c->cs, &cert_buf, &cert_len))
 833     {
 834         ZOOM_connection_option_setl(c, "sslPeerCert",
 835                                     cert_buf, cert_len);
 836         xfree(cert_buf);
 837     }
 838 }
 839
 840 static zoom_ret do_connect (ZOOM_connection c)
 841 {
 842     void *add;
 843     const char *effective_host;
 844     if (!log_level_initialized)
 845     {
 846         log_level = yaz_log_module_level("zoom");
 847         log_level_initialized = 1;
 848     }
 849
 850
 851     if (c->proxy)
 852         effective_host = c->proxy;
 853     else
 854         effective_host = c->host_port;
 855
 856     yaz_log (log_level, "do_connect host=%s", effective_host);
 857
 858     if (c->cs)
 859         cs_close(c->cs);
 860     c->cs = cs_create_host (effective_host, 0, &add);
 861
 862     if (c->cs && c->cs->protocol == PROTO_HTTP)
 863     {
 864 #if HAVE_XML2
 865         const char *path = 0;
 866
 867         c->proto = PROTO_HTTP;
 868         cs_get_host_args(c->host_port, &path);
 869         xfree(c->path);
 870         c->path = (char*) xmalloc(strlen(path)+2);
 871         c->path[0] = '/';
 872         strcpy (c->path+1, path);
 873 #else
 874         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_PROTOCOL, "SRW");
 875         do_close(c);
 876         return zoom_complete;
 877 #endif
 878     }
 879     if (c->cs)
 880     {
 881         int ret = cs_connect (c->cs, add);
 882         if (ret == 0)
 883         {
 884             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
 885             ZOOM_connection_put_event(c, event);
 886             get_cert(c);
 887             if (c->proto == PROTO_Z3950)
 888                 ZOOM_connection_send_init(c);
 889             else
 890             {
 891                 /* no init request for SRW .. */
 892                 assert (c->tasks->which == ZOOM_TASK_CONNECT);
 893                 ZOOM_connection_remove_task (c);
 894                 c->mask = 0;
 895                 ZOOM_connection_exec_task (c);
 896             }
 897             c->state = STATE_ESTABLISHED;
 898             return zoom_pending;
 899         }
 900         else if (ret > 0)
 901         {
 902             c->state = STATE_CONNECTING;
 903             c->mask = ZOOM_SELECT_EXCEPT;
 904             if (c->cs->io_pending & CS_WANT_WRITE)
 905                 c->mask += ZOOM_SELECT_WRITE;
 906             if (c->cs->io_pending & CS_WANT_READ)
 907                 c->mask += ZOOM_SELECT_READ;
 908             return zoom_pending;
 909         }
 910     }
 911     c->state = STATE_IDLE;
 912     set_ZOOM_error(c, ZOOM_ERROR_CONNECT, effective_host);
 913     return zoom_complete;
 914 }
 915
 916 int z3950_connection_socket(ZOOM_connection c)
 917 {
 918     if (c->cs)
 919         return cs_fileno(c->cs);
 920     return -1;
 921 }
 922
 923 int z3950_connection_mask(ZOOM_connection c)
 924 {
 925     if (c->cs)
 926         return c->mask;
 927     return 0;
 928 }
 929
 930 static void otherInfo_attach (ZOOM_connection c, Z_APDU *a, ODR out)
 931 {
 932     int i;
 933     for (i = 0; i<200; i++)
 934     {
 935         size_t len;
 936         Z_OtherInformation **oi;
 937         char buf[80];
 938         const char *val;
 939         const char *cp;
 940         int oidval;
 941
 942         sprintf (buf, "otherInfo%d", i);
 943         val = ZOOM_options_get (c->options, buf);
 944         if (!val)
 945             break;
 946         cp = strchr (val, ':');
 947         if (!cp)
 948             continue;
 949         len = cp - val;
 950         if (len >= sizeof(buf))
 951             len = sizeof(buf)-1;
 952         memcpy (buf, val, len);
 953         buf[len] = '\0';
 954         oidval = oid_getvalbyname (buf);
 955         if (oidval == VAL_NONE)
 956             continue;
 957
 958         yaz_oi_APDU(a, &oi);
 959         yaz_oi_set_string_oidval(oi, out, oidval, 1, cp+1);
 960     }
 961 }
 962
 963 static int encode_APDU(ZOOM_connection c, Z_APDU *a, ODR out)
 964 {
 965     assert (a);
 966     if (c->cookie_out)
 967     {
 968         Z_OtherInformation **oi;
 969         yaz_oi_APDU(a, &oi);
 970         yaz_oi_set_string_oidval(oi, out, VAL_COOKIE, 1, c->cookie_out);
 971     }
 972     if (c->client_IP)
 973     {
 974         Z_OtherInformation **oi;
 975         yaz_oi_APDU(a, &oi);
 976         yaz_oi_set_string_oidval(oi, out, VAL_CLIENT_IP, 1, c->client_IP);
 977     }
 978     otherInfo_attach (c, a, out);
 979     if (!z_APDU(out, &a, 0, 0))
 980     {
 981         FILE *outf = fopen("/tmp/apdu.txt", "a");
 982         if (a && outf)
 983         {
 984             ODR odr_pr = odr_createmem(ODR_PRINT);
 985             fprintf (outf, "a=%p\n", a);
 986             odr_setprint(odr_pr, outf);
 987             z_APDU(odr_pr, &a, 0, 0);
 988             odr_destroy(odr_pr);
 989         }
 990         yaz_log (log_level, "encoding failed");
 991         set_ZOOM_error(c, ZOOM_ERROR_ENCODE, 0);
 992         odr_reset(out);
 993         return -1;
 994     }
 995
 996     return 0;
 997 }
 998
 999 static zoom_ret send_APDU (ZOOM_connection c, Z_APDU *a)
1000 {
1001     ZOOM_Event event;
1002     assert (a);
1003     if (encode_APDU(c, a, c->odr_out))
1004         return zoom_complete;
1005     yaz_log(log_level, "send APDU type=%d", a->which);
1006     c->buf_out = odr_getbuf(c->odr_out, &c->len_out, 0);
1007     event = ZOOM_Event_create (ZOOM_EVENT_SEND_APDU);
1008     ZOOM_connection_put_event (c, event);
1009     odr_reset(c->odr_out);
1010     return do_write (c);
1011 }
1012
1013 /* returns 1 if PDU was sent OK (still pending )
1014            0 if PDU was not sent OK (nothing to wait for)
1015 */
1016
1017 static zoom_ret ZOOM_connection_send_init (ZOOM_connection c)
1018 {
1019     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_initRequest);
1020     Z_InitRequest *ireq = apdu->u.initRequest;
1021     Z_IdAuthentication *auth = (Z_IdAuthentication *)
1022         odr_malloc(c->odr_out, sizeof(*auth));
1023     const char *auth_groupId = ZOOM_options_get (c->options, "group");
1024     const char *auth_userId = ZOOM_options_get (c->options, "user");
1025     const char *auth_password = ZOOM_options_get (c->options, "password");
1026     char *version;
1027
1028     /* support the pass for backwards compatibility */
1029     if (!auth_password)
1030         auth_password = ZOOM_options_get (c->options, "pass");
1031
1032     ODR_MASK_SET(ireq->options, Z_Options_search);
1033     ODR_MASK_SET(ireq->options, Z_Options_present);
1034     ODR_MASK_SET(ireq->options, Z_Options_scan);
1035     ODR_MASK_SET(ireq->options, Z_Options_sort);
1036     ODR_MASK_SET(ireq->options, Z_Options_extendedServices);
1037     ODR_MASK_SET(ireq->options, Z_Options_namedResultSets);
1038
1039     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_1);
1040     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_2);
1041     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_3);
1042
1043     /* Index Data's Z39.50 Implementor Id is 81 */
1044     ireq->implementationId = odr_prepend(c->odr_out,
1045         ZOOM_options_get(c->options, "implementationId"),
1046         odr_prepend(c->odr_out, "81", ireq->implementationId));
1047
1048     ireq->implementationName = odr_prepend(c->odr_out,
1049         ZOOM_options_get(c->options, "implementationName"),
1050         odr_prepend(c->odr_out, "ZOOM-C", ireq->implementationName));
1051
1052     version = odr_strdup(c->odr_out, "$Revision: 1.37 $");
1053     if (strlen(version) > 10)   /* check for unexpanded CVS strings */
1054         version[strlen(version)-2] = '\0';
1055     ireq->implementationVersion = odr_prepend(c->odr_out,
1056         ZOOM_options_get(c->options, "implementationVersion"),
1057         odr_prepend(c->odr_out, &version[11], ireq->implementationVersion));
1058
1059     *ireq->maximumRecordSize =
1060         ZOOM_options_get_int (c->options, "maximumRecordSize", 1024*1024);
1061     *ireq->preferredMessageSize =
1062         ZOOM_options_get_int (c->options, "preferredMessageSize", 1024*1024);
1063
1064     if (auth_groupId || auth_password)
1065     {
1066         Z_IdPass *pass = (Z_IdPass *) odr_malloc(c->odr_out, sizeof(*pass));
1067         int i = 0;
1068         pass->groupId = 0;
1069         if (auth_groupId && *auth_groupId)
1070         {
1071             pass->groupId = (char *)
1072                 odr_malloc(c->odr_out, strlen(auth_groupId)+1);
1073             strcpy(pass->groupId, auth_groupId);
1074             i++;
1075         }
1076         pass->userId = 0;
1077         if (auth_userId && *auth_userId)
1078         {
1079             pass->userId = (char *)
1080                 odr_malloc(c->odr_out, strlen(auth_userId)+1);
1081             strcpy(pass->userId, auth_userId);
1082             i++;
1083         }
1084         pass->password = 0;
1085         if (auth_password && *auth_password)
1086         {
1087             pass->password = (char *)
1088                 odr_malloc(c->odr_out, strlen(auth_password)+1);
1089             strcpy(pass->password, auth_password);
1090             i++;
1091         }
1092         if (i)
1093         {
1094             auth->which = Z_IdAuthentication_idPass;
1095             auth->u.idPass = pass;
1096             ireq->idAuthentication = auth;
1097         }
1098     }
1099     else if (auth_userId)
1100     {
1101         auth->which = Z_IdAuthentication_open;
1102         auth->u.open = (char *)
1103             odr_malloc(c->odr_out, strlen(auth_userId)+1);
1104         strcpy(auth->u.open, auth_userId);
1105         ireq->idAuthentication = auth;
1106     }
1107     if (c->proxy)
1108         yaz_oi_set_string_oidval(&ireq->otherInfo, c->odr_out,
1109                                  VAL_PROXY, 1, c->host_port);
1110     if (c->charset||c->lang)
1111     {
1112         Z_OtherInformation **oi;
1113         Z_OtherInformationUnit *oi_unit;
1114
1115         yaz_oi_APDU(apdu, &oi);
1116
1117         if ((oi_unit = yaz_oi_update(oi, c->odr_out, NULL, 0, 0)))
1118         {
1119             ODR_MASK_SET(ireq->options, Z_Options_negotiationModel);
1120
1121             oi_unit->which = Z_OtherInfo_externallyDefinedInfo;
1122             oi_unit->information.externallyDefinedInfo =
1123                 yaz_set_proposal_charneg
1124                 (c->odr_out,
1125                  (const char **)&c->charset, (c->charset) ? 1:0,
1126                  (const char **)&c->lang, (c->lang) ? 1:0, 1);
1127         }
1128     }
1129     assert (apdu);
1130     return send_APDU (c, apdu);
1131 }
1132
1133 #if HAVE_XML2
1134 static zoom_ret send_srw (ZOOM_connection c, Z_SRW_PDU *sr)
1135 {
1136     char ctype[50];
1137     Z_SOAP_Handler h[2] = {
1138         {"http://www.loc.gov/zing/srw/", 0, (Z_SOAP_fun) yaz_srw_codec},
1139         {0, 0, 0}
1140     };
1141     ODR o = odr_createmem(ODR_ENCODE);
1142     int ret;
1143     Z_SOAP *p = (Z_SOAP*) odr_malloc(o, sizeof(*p));
1144     Z_GDU *gdu;
1145     ZOOM_Event event;
1146
1147     gdu = z_get_HTTP_Request(c->odr_out);
1148     gdu->u.HTTP_Request->path = c->path;
1149
1150     if (c->host_port)
1151     {
1152         const char *cp0 = strstr(c->host_port, "://");
1153         const char *cp1 = 0;
1154         if (cp0)
1155             cp0 = cp0+3;
1156         else
1157             cp0 = c->host_port;
1158
1159         cp1 = strchr(cp0, '/');
1160         if (!cp1)
1161             cp1 = cp0+strlen(cp0);
1162
1163         if (cp0 && cp1)
1164         {
1165             char *h = (char*) odr_malloc(c->odr_out, cp1 - cp0 + 1);
1166             memcpy (h, cp0, cp1 - cp0);
1167             h[cp1-cp0] = '\0';
1168             z_HTTP_header_add(c->odr_out, &gdu->u.HTTP_Request->headers,
1169                               "Host", h);
1170         }
1171     }
1172
1173     strcpy(ctype, "text/xml");
1174     if (c->charset && strlen(c->charset) < 20)
1175     {
1176         strcat(ctype, "; charset=");
1177         strcat(ctype, c->charset);
1178     }
1179     z_HTTP_header_add(c->odr_out, &gdu->u.HTTP_Request->headers,
1180                       "Content-Type", ctype);
1181     z_HTTP_header_add(c->odr_out, &gdu->u.HTTP_Request->headers,
1182                       "SOAPAction", "\"\"");
1183     p->which = Z_SOAP_generic;
1184     p->u.generic = (Z_SOAP_Generic *) odr_malloc(o, sizeof(*p->u.generic));
1185     p->u.generic->no = 0;
1186     p->u.generic->ns = 0;
1187     p->u.generic->p = sr;
1188     p->ns = "http://schemas.xmlsoap.org/soap/envelope/";
1189
1190     ret = z_soap_codec_enc(o, &p,
1191                            &gdu->u.HTTP_Request->content_buf,
1192                            &gdu->u.HTTP_Request->content_len, h,
1193                            c->charset);
1194
1195     if (!z_GDU(c->odr_out, &gdu, 0, 0))
1196         return zoom_complete;
1197     c->buf_out = odr_getbuf(c->odr_out, &c->len_out, 0);
1198
1199     odr_destroy(o);
1200
1201     event = ZOOM_Event_create (ZOOM_EVENT_SEND_APDU);
1202     ZOOM_connection_put_event (c, event);
1203     odr_reset(c->odr_out);
1204     return do_write (c);
1205 }
1206 #endif
1207
1208 #if HAVE_XML2
1209 static zoom_ret ZOOM_connection_srw_send_search(ZOOM_connection c)
1210 {
1211     int i;
1212     ZOOM_resultset resultset = 0;
1213     Z_SRW_PDU *sr = 0;
1214     const char *recordPacking = 0;
1215
1216     if (c->error)                  /* don't continue on error */
1217         return zoom_complete;
1218     assert (c->tasks);
1219     if (c->tasks->which == ZOOM_TASK_SEARCH)
1220     {
1221         resultset = c->tasks->u.search.resultset;
1222         resultset->setname = xstrdup ("default");
1223         ZOOM_options_set (resultset->options, "setname", resultset->setname);
1224     }
1225     else if(c->tasks->which == ZOOM_TASK_RETRIEVE)
1226     {
1227         resultset = c->tasks->u.retrieve.resultset;
1228
1229         resultset->start = c->tasks->u.retrieve.start;
1230         resultset->count = c->tasks->u.retrieve.count;
1231
1232         if (resultset->start >= resultset->size)
1233             return zoom_complete;
1234         if (resultset->start + resultset->count > resultset->size)
1235             resultset->count = resultset->size - resultset->start;
1236
1237         for (i = 0; i<resultset->count; i++)
1238         {
1239             ZOOM_record rec =
1240                 record_cache_lookup (resultset, i + resultset->start);
1241             if (!rec)
1242                 break;
1243         }
1244         if (i == resultset->count)
1245             return zoom_complete;
1246     }
1247     assert(resultset->query);
1248
1249     sr = yaz_srw_get(c->odr_out, Z_SRW_searchRetrieve_request);
1250
1251     if (resultset->query->z_query->which == Z_Query_type_104
1252         && resultset->query->z_query->u.type_104->which == Z_External_CQL)
1253     {
1254
1255         sr->u.request->query_type = Z_SRW_query_type_cql;
1256         sr->u.request->query.cql =resultset->query->z_query->u.type_104->u.cql;
1257     }
1258     else if (resultset->query->z_query->which == Z_Query_type_1 &&
1259              resultset->query->z_query->u.type_1)
1260     {
1261         sr->u.request->query_type = Z_SRW_query_type_pqf;
1262         sr->u.request->query.pqf = resultset->query->query_string;
1263     }
1264     else
1265     {
1266         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_QUERY, 0);
1267         return zoom_complete;
1268     }
1269     sr->u.request->startRecord = odr_intdup (c->odr_out, resultset->start + 1);
1270     sr->u.request->maximumRecords = odr_intdup (
1271         c->odr_out, resultset->step>0 ? resultset->step : resultset->count);
1272     sr->u.request->recordSchema = resultset->schema;
1273
1274     recordPacking = ZOOM_resultset_option_get (resultset, "recordPacking");
1275
1276     if (recordPacking)
1277         sr->u.request->recordPacking = odr_strdup(c->odr_out, recordPacking);
1278
1279     return send_srw(c, sr);
1280 }
1281 #else
1282 static zoom_ret ZOOM_connection_srw_send_search(ZOOM_connection c)
1283 {
1284     return zoom_complete;
1285 }
1286 #endif
1287
1288 static zoom_ret ZOOM_connection_send_search (ZOOM_connection c)
1289 {
1290     ZOOM_resultset r;
1291     int lslb, ssub, mspn;
1292     const char *syntax;
1293     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_searchRequest);
1294     Z_SearchRequest *search_req = apdu->u.searchRequest;
1295     const char *elementSetName;
1296     const char *smallSetElementSetName;
1297     const char *mediumSetElementSetName;
1298
1299     assert (c->tasks);
1300     assert (c->tasks->which == ZOOM_TASK_SEARCH);
1301
1302     r = c->tasks->u.search.resultset;
1303
1304     elementSetName =
1305         ZOOM_options_get (r->options, "elementSetName");
1306     smallSetElementSetName  =
1307         ZOOM_options_get (r->options, "smallSetElementSetName");
1308     mediumSetElementSetName =
1309         ZOOM_options_get (r->options, "mediumSetElementSetName");
1310
1311     if (!smallSetElementSetName)
1312         smallSetElementSetName = elementSetName;
1313
1314     if (!mediumSetElementSetName)
1315         mediumSetElementSetName = elementSetName;
1316
1317     assert (r);
1318     assert (r->query);
1319
1320     /* prepare query for the search request */
1321     search_req->query = r->query->z_query;
1322     if (!search_req->query)
1323     {
1324         set_ZOOM_error(c, ZOOM_ERROR_INVALID_QUERY, 0);
1325         return zoom_complete;
1326     }
1327
1328     search_req->databaseNames =
1329         set_DatabaseNames (c, r->options, &search_req->num_databaseNames);
1330
1331     /* get syntax (no need to provide unless piggyback is in effect) */
1332     syntax = ZOOM_options_get (r->options, "preferredRecordSyntax");
1333
1334     lslb = ZOOM_options_get_int (r->options, "largeSetLowerBound", -1);
1335     ssub = ZOOM_options_get_int (r->options, "smallSetUpperBound", -1);
1336     mspn = ZOOM_options_get_int (r->options, "mediumSetPresentNumber", -1);
1337     if (lslb != -1 && ssub != -1 && mspn != -1)
1338     {
1339         /* So're a Z39.50 expert? Let's hope you don't do sort */
1340         *search_req->largeSetLowerBound = lslb;
1341         *search_req->smallSetUpperBound = ssub;
1342         *search_req->mediumSetPresentNumber = mspn;
1343     }
1344     else if (r->start == 0 && r->count > 0
1345              && r->piggyback && !r->r_sort_spec && !r->schema)
1346     {
1347         /* Regular piggyback - do it unless we're going to do sort */
1348         *search_req->largeSetLowerBound = 2000000000;
1349         *search_req->smallSetUpperBound = 1;
1350         *search_req->mediumSetPresentNumber = r->step>0 ? r->step : r->count;
1351     }
1352     else
1353     {
1354         /* non-piggyback. Need not provide elementsets or syntaxes .. */
1355         smallSetElementSetName = 0;
1356         mediumSetElementSetName = 0;
1357         syntax = 0;
1358     }
1359     if (smallSetElementSetName && *smallSetElementSetName)
1360     {
1361         Z_ElementSetNames *esn = (Z_ElementSetNames *)
1362             odr_malloc (c->odr_out, sizeof(*esn));
1363
1364         esn->which = Z_ElementSetNames_generic;
1365         esn->u.generic = odr_strdup (c->odr_out, smallSetElementSetName);
1366         search_req->smallSetElementSetNames = esn;
1367     }
1368     if (mediumSetElementSetName && *mediumSetElementSetName)
1369     {
1370         Z_ElementSetNames *esn = (Z_ElementSetNames *)
1371             odr_malloc (c->odr_out, sizeof(*esn));
1372
1373         esn->which = Z_ElementSetNames_generic;
1374         esn->u.generic = odr_strdup (c->odr_out, mediumSetElementSetName);
1375         search_req->mediumSetElementSetNames = esn;
1376     }
1377     if (syntax)
1378         search_req->preferredRecordSyntax =
1379             yaz_str_to_z3950oid (c->odr_out, CLASS_RECSYN, syntax);
1380
1381     if (!r->setname)
1382     {
1383         if (c->support_named_resultsets)
1384         {
1385             char setname[14];
1386             int ord;
1387             /* find the lowest unused ordinal so that we re-use
1388                result sets on the server. */
1389             for (ord = 1; ; ord++)
1390             {
1391                 ZOOM_resultset rp;
1392                 sprintf (setname, "%d", ord);
1393                 for (rp = c->resultsets; rp; rp = rp->next)
1394                     if (rp->setname && !strcmp (rp->setname, setname))
1395                         break;
1396                 if (!rp)
1397                     break;
1398             }
1399             r->setname = xstrdup (setname);
1400             yaz_log (log_level, "allocating set %s", r->setname);
1401         }
1402         else
1403             r->setname = xstrdup ("default");
1404         ZOOM_options_set (r->options, "setname", r->setname);
1405     }
1406     search_req->resultSetName = odr_strdup(c->odr_out, r->setname);
1407     /* send search request */
1408     return send_APDU (c, apdu);
1409 }
1410
1411 static void response_diag (ZOOM_connection c, Z_DiagRec *p)
1412 {
1413     int oclass;
1414     Z_DefaultDiagFormat *r;
1415     char *addinfo = 0;
1416
1417     xfree (c->addinfo);
1418     c->addinfo = 0;
1419     if (p->which != Z_DiagRec_defaultFormat)
1420     {
1421         set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
1422         return;
1423     }
1424     r = p->u.defaultFormat;
1425     switch (r->which)
1426     {
1427     case Z_DefaultDiagFormat_v2Addinfo:
1428         addinfo = r->u.v2Addinfo;
1429         break;
1430     case Z_DefaultDiagFormat_v3Addinfo:
1431         addinfo = r->u.v3Addinfo;
1432         break;
1433     }
1434     set_dset_error(c, *r->condition,
1435                    yaz_z3950oid_to_str(r->diagnosticSetId, &oclass),
1436                    addinfo, 0);
1437 }
1438
1439 ZOOM_API(ZOOM_record)
1440 ZOOM_record_clone (ZOOM_record srec)
1441 {
1442     char *buf;
1443     int size;
1444     ODR odr_enc;
1445     ZOOM_record nrec;
1446
1447     odr_enc = odr_createmem(ODR_ENCODE);
1448     if (!z_NamePlusRecord (odr_enc, &srec->npr, 0, 0))
1449         return 0;
1450     buf = odr_getbuf (odr_enc, &size, 0);
1451
1452     nrec = (ZOOM_record) xmalloc (sizeof(*nrec));
1453     nrec->odr = odr_createmem(ODR_DECODE);
1454     nrec->wrbuf_marc = 0;
1455     nrec->wrbuf_iconv = 0;
1456     nrec->wrbuf_opac = 0;
1457     odr_setbuf (nrec->odr, buf, size, 0);
1458     z_NamePlusRecord (nrec->odr, &nrec->npr, 0, 0);
1459
1460     odr_destroy (odr_enc);
1461     return nrec;
1462 }
1463
1464 ZOOM_API(ZOOM_record)
1465 ZOOM_resultset_record_immediate (ZOOM_resultset s,size_t pos)
1466 {
1467     return record_cache_lookup (s, pos);
1468 }
1469
1470 ZOOM_API(ZOOM_record)
1471 ZOOM_resultset_record (ZOOM_resultset r, size_t pos)
1472 {
1473     ZOOM_record rec = ZOOM_resultset_record_immediate(r, pos);
1474
1475     if (!rec)
1476     {
1477         ZOOM_resultset_retrieve (r, 1, pos, 1);
1478         rec = ZOOM_resultset_record_immediate (r, pos);
1479     }
1480     return rec;
1481 }
1482
1483 ZOOM_API(void)
1484 ZOOM_record_destroy (ZOOM_record rec)
1485 {
1486     if (!rec)
1487         return;
1488     if (rec->wrbuf_marc)
1489         wrbuf_free (rec->wrbuf_marc, 1);
1490     if (rec->wrbuf_iconv)
1491         wrbuf_free (rec->wrbuf_iconv, 1);
1492     if (rec->wrbuf_opac)
1493         wrbuf_free (rec->wrbuf_opac, 1);
1494     odr_destroy (rec->odr);
1495     xfree (rec);
1496 }
1497
1498 static const char *marc_iconv_return(ZOOM_record rec, int marc_type,
1499                                      int *len,
1500                                      const char *buf, int sz,
1501                                      const char *record_charset)
1502 {
1503     char to[40];
1504     char from[40];
1505     yaz_iconv_t cd = 0;
1506     yaz_marc_t mt = yaz_marc_create();
1507
1508     *from = '\0';
1509     strcpy(to, "UTF-8");
1510     if (record_charset && *record_charset)
1511     {
1512         /* Use "from,to" or just "from" */
1513         const char *cp =strchr(record_charset, ',');
1514         int clen = strlen(record_charset);
1515         if (cp && cp[1])
1516         {
1517             strncpy( to, cp+1, sizeof(to)-1);
1518             to[sizeof(to)-1] = '\0';
1519             clen = cp - record_charset;
1520         }
1521         if (clen > sizeof(from)-1)
1522             clen = sizeof(from)-1;
1523
1524         if (clen)
1525             strncpy(from, record_charset, clen);
1526         from[clen] = '\0';
1527     }
1528
1529     if (*from && *to)
1530     {
1531         cd = yaz_iconv_open(to, from);
1532         yaz_marc_iconv(mt, cd);
1533     }
1534
1535     yaz_marc_xml(mt, marc_type);
1536     if (!rec->wrbuf_marc)
1537         rec->wrbuf_marc = wrbuf_alloc();
1538     wrbuf_rewind (rec->wrbuf_marc);
1539     if (yaz_marc_decode_wrbuf (mt, buf, sz, rec->wrbuf_marc) > 0)
1540     {
1541         yaz_marc_destroy(mt);
1542         if (cd)
1543             yaz_iconv_close(cd);
1544         if (len)
1545             *len = wrbuf_len(rec->wrbuf_marc);
1546         return wrbuf_buf(rec->wrbuf_marc);
1547     }
1548     yaz_marc_destroy(mt);
1549     if (cd)
1550         yaz_iconv_close(cd);
1551     return 0;
1552 }
1553
1554 static const char *record_iconv_return(ZOOM_record rec, int *len,
1555                                        const char *buf, int sz,
1556                                        const char *record_charset)
1557 {
1558     char to[40];
1559     char from[40];
1560     yaz_iconv_t cd = 0;
1561
1562     *from = '\0';
1563     strcpy(to, "UTF-8");
1564     if (record_charset && *record_charset)
1565     {
1566         /* Use "from,to" or just "from" */
1567         const char *cp =strchr(record_charset, ',');
1568         int clen = strlen(record_charset);
1569         if (cp && cp[1])
1570         {
1571             strncpy( to, cp+1, sizeof(to)-1);
1572             to[sizeof(to)-1] = '\0';
1573             clen = cp - record_charset;
1574         }
1575         if (clen > sizeof(from)-1)
1576             clen = sizeof(from)-1;
1577
1578         if (clen)
1579             strncpy(from, record_charset, clen);
1580         from[clen] = '\0';
1581     }
1582
1583     if (*from && *to && (cd = yaz_iconv_open(to, from)))
1584     {
1585         char outbuf[12];
1586         size_t inbytesleft = sz;
1587         const char *inp = buf;
1588
1589         if (!rec->wrbuf_iconv)
1590             rec->wrbuf_iconv = wrbuf_alloc();
1591
1592         wrbuf_rewind(rec->wrbuf_iconv);
1593
1594         while (inbytesleft)
1595         {
1596             size_t outbytesleft = sizeof(outbuf);
1597             char *outp = outbuf;
1598             size_t r = yaz_iconv (cd, (char**) &inp,
1599                                   &inbytesleft,
1600                                   &outp, &outbytesleft);
1601             if (r == (size_t) (-1))
1602             {
1603                 int e = yaz_iconv_error(cd);
1604                 if (e != YAZ_ICONV_E2BIG)
1605                     break;
1606             }
1607             wrbuf_write(rec->wrbuf_iconv, outbuf, outp - outbuf);
1608         }
1609         wrbuf_puts(rec->wrbuf_iconv, "");
1610         buf = wrbuf_buf(rec->wrbuf_iconv);
1611         sz = wrbuf_len(rec->wrbuf_iconv);
1612         yaz_iconv_close(cd);
1613     }
1614     if (len)
1615         *len = sz;
1616     return buf;
1617 }
1618
1619 ZOOM_API(const char *)
1620 ZOOM_record_get (ZOOM_record rec, const char *type_spec, int *len)
1621 {
1622     char type[40];
1623     char charset[40];
1624     char xpath[512];
1625     const char *cp;
1626     int i;
1627     Z_NamePlusRecord *npr;
1628
1629     if (len)
1630         *len = 0; /* default return */
1631
1632     if (!rec)
1633         return 0;
1634     npr = rec->npr;
1635     if (!npr)
1636         return 0;
1637
1638     cp = type_spec;
1639     for (i = 0; cp[i] && i < sizeof(type)-1; i++)
1640     {
1641         if (cp[i] == ';' || cp[i] == ' ')
1642             break;
1643         type[i] = cp[i];
1644     }
1645     type[i] = '\0';
1646     charset[0] = '\0';
1647     while (type_spec[i] == ';')
1648     {
1649         i++;
1650         while (type_spec[i] == ' ')
1651             i++;
1652         if (!strncmp(type_spec+i, "charset=", 8))
1653         {
1654             int j = 0;
1655             i = i + 8; /* skip charset= */
1656             for (j = 0; type_spec[i]  && j < sizeof(charset)-1; i++, j++)
1657             {
1658                 if (type_spec[i] == ';' || type_spec[i] == ' ')
1659                     break;
1660                 charset[j] = cp[i];
1661             }
1662             charset[j] = '\0';
1663         }
1664         else if (!strncmp(type_spec+i, "xpath=", 6))
1665         {
1666             int j = 0;
1667             i = i + 6;
1668             for (j = 0; type_spec[i] && j < sizeof(xpath)-1; i++, j++)
1669                 xpath[j] = cp[i];
1670             xpath[j] = '\0';
1671         }
1672         while (type_spec[i] == ' ')
1673             i++;
1674     }
1675     if (!strcmp (type, "database"))
1676     {
1677         if (len)
1678             *len = (npr->databaseName ? strlen(npr->databaseName) : 0);
1679         return npr->databaseName;
1680     }
1681     else if (!strcmp (type, "syntax"))
1682     {
1683         const char *desc = 0;
1684         if (npr->which == Z_NamePlusRecord_databaseRecord)
1685         {
1686             Z_External *r = (Z_External *) npr->u.databaseRecord;
1687             oident *ent = oid_getentbyoid(r->direct_reference);
1688             if (ent)
1689                 desc = ent->desc;
1690         }
1691         if (!desc)
1692             desc = "none";
1693         if (len)
1694             *len = strlen(desc);
1695         return desc;
1696     }
1697     if (npr->which != Z_NamePlusRecord_databaseRecord)
1698         return 0;
1699
1700     /* from now on - we have a database record .. */
1701     if (!strcmp (type, "render"))
1702     {
1703         Z_External *r = (Z_External *) npr->u.databaseRecord;
1704         oident *ent = oid_getentbyoid(r->direct_reference);
1705
1706         /* render bibliographic record .. */
1707         if (r->which == Z_External_OPAC)
1708         {
1709             r = r->u.opac->bibliographicRecord;
1710             if (!r)
1711                 return 0;
1712             ent = oid_getentbyoid(r->direct_reference);
1713         }
1714         if (r->which == Z_External_sutrs)
1715             return record_iconv_return(rec, len,
1716                                        (char*) r->u.sutrs->buf,
1717                                        r->u.sutrs->len,
1718                                        charset);
1719         else if (r->which == Z_External_octet)
1720         {
1721             const char *ret_buf;
1722             switch (ent->value)
1723             {
1724             case VAL_SOIF:
1725             case VAL_HTML:
1726             case VAL_SUTRS:
1727                 break;
1728             case VAL_TEXT_XML:
1729             case VAL_APPLICATION_XML:
1730                 break;
1731             default:
1732                 ret_buf = marc_iconv_return(
1733                     rec, YAZ_MARC_LINE, len,
1734                     (const char *) r->u.octet_aligned->buf,
1735                     r->u.octet_aligned->len,
1736                     charset);
1737                 if (ret_buf)
1738                     return ret_buf;
1739             }
1740             return record_iconv_return(rec, len,
1741                                        (const char *) r->u.octet_aligned->buf,
1742                                        r->u.octet_aligned->len,
1743                                        charset);
1744         }
1745         else if (r->which == Z_External_grs1)
1746         {
1747             if (!rec->wrbuf_marc)
1748                 rec->wrbuf_marc = wrbuf_alloc();
1749             wrbuf_rewind (rec->wrbuf_marc);
1750             yaz_display_grs1(rec->wrbuf_marc, r->u.grs1, 0);
1751             return record_iconv_return(rec, len,
1752                                        wrbuf_buf(rec->wrbuf_marc),
1753                                        wrbuf_len(rec->wrbuf_marc),
1754                                        charset);
1755         }
1756         return 0;
1757     }
1758     else if (!strcmp (type, "xml") || !strcmp(type, "oai"))
1759     {
1760         Z_External *r = (Z_External *) npr->u.databaseRecord;
1761         oident *ent = oid_getentbyoid(r->direct_reference);
1762
1763         /* render bibliographic record .. */
1764         if (r->which == Z_External_OPAC)
1765         {
1766             r = r->u.opac->bibliographicRecord;
1767             if (!r)
1768                 return 0;
1769             ent = oid_getentbyoid(r->direct_reference);
1770         }
1771
1772         if (r->which == Z_External_sutrs)
1773             return record_iconv_return(rec, len,
1774                                        (const char *) r->u.sutrs->buf,
1775                                        r->u.sutrs->len,
1776                                        charset);
1777         else if (r->which == Z_External_octet)
1778         {
1779             const char *ret_buf;
1780             int marc_decode_type = YAZ_MARC_MARCXML;
1781
1782             if (!strcmp(type, "oai"))
1783                 marc_decode_type = YAZ_MARC_OAIMARC;
1784             switch (ent->value)
1785             {
1786             case VAL_SOIF:
1787             case VAL_HTML:
1788             case VAL_SUTRS:
1789                 break;
1790             case VAL_TEXT_XML:
1791             case VAL_APPLICATION_XML:
1792                 break;
1793             default:
1794                 ret_buf = marc_iconv_return(
1795                     rec, marc_decode_type, len,
1796                     (const char *) r->u.octet_aligned->buf,
1797                     r->u.octet_aligned->len,
1798                     charset);
1799                 if (ret_buf)
1800                     return ret_buf;
1801             }
1802             return record_iconv_return(rec, len,
1803                                        (const char *) r->u.octet_aligned->buf,
1804                                        r->u.octet_aligned->len,
1805                                        charset);
1806         }
1807         else if (r->which == Z_External_grs1)
1808         {
1809             if (len) *len = 5;
1810             return "GRS-1";
1811         }
1812         return 0;
1813     }
1814     else if (!strcmp (type, "raw"))
1815     {
1816         Z_External *r = (Z_External *) npr->u.databaseRecord;
1817
1818         if (r->which == Z_External_sutrs)
1819         {
1820             if (len) *len = r->u.sutrs->len;
1821             return (const char *) r->u.sutrs->buf;
1822         }
1823         else if (r->which == Z_External_octet)
1824         {
1825             if (len) *len = r->u.octet_aligned->len;
1826             return (const char *) r->u.octet_aligned->buf;
1827         }
1828         else /* grs-1, explain, OPAC, ... */
1829         {
1830             if (len) *len = -1;
1831             return (const char *) npr->u.databaseRecord;
1832         }
1833         return 0;
1834     }
1835     else if (!strcmp (type, "ext"))
1836     {
1837         if (len) *len = -1;
1838         return (const char *) npr->u.databaseRecord;
1839     }
1840     else if (!strcmp (type, "opac"))
1841
1842     {
1843         Z_External *r = (Z_External *) npr->u.databaseRecord;
1844         if (r->which == Z_External_OPAC)
1845         {
1846             if (!rec->wrbuf_opac)
1847                 rec->wrbuf_opac = wrbuf_alloc();
1848             wrbuf_rewind (rec->wrbuf_opac);
1849             yaz_display_OPAC(rec->wrbuf_opac, r->u.opac, 0);
1850             return record_iconv_return(rec, len,
1851                                        wrbuf_buf(rec->wrbuf_opac),
1852                                        wrbuf_len(rec->wrbuf_opac),
1853                                        charset);
1854         }
1855     }
1856     return 0;
1857 }
1858
1859 static int strcmp_null(const char *v1, const char *v2)
1860 {
1861     if (!v1 && !v2)
1862         return 0;
1863     if (!v1 || !v2)
1864         return -1;
1865     return strcmp(v1, v2);
1866 }
1867
1868 static void record_cache_add (ZOOM_resultset r, Z_NamePlusRecord *npr,
1869                               int pos)
1870 {
1871     ZOOM_record_cache rc;
1872     const char *elementSetName =
1873         ZOOM_resultset_option_get (r, "elementSetName");
1874     const char *syntax =
1875         ZOOM_resultset_option_get (r, "preferredRecordSyntax");
1876
1877     ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_RECV_RECORD);
1878     ZOOM_connection_put_event(r->connection, event);
1879
1880     for (rc = r->record_cache; rc; rc = rc->next)
1881     {
1882         if (pos == rc->pos)
1883         {
1884             if (strcmp_null(r->schema, rc->schema))
1885                 continue;
1886             if (strcmp_null(elementSetName,rc->elementSetName))
1887                 continue;
1888             if (strcmp_null(syntax, rc->syntax))
1889                 continue;
1890             /* not destroying rc->npr (it's handled by nmem )*/
1891             rc->rec.npr = npr;
1892             /* keeping wrbuf_marc too */
1893             return;
1894         }
1895     }
1896     rc = (ZOOM_record_cache) odr_malloc (r->odr, sizeof(*rc));
1897     rc->rec.npr = npr;
1898     rc->rec.odr = 0;
1899     rc->rec.wrbuf_marc = 0;
1900     rc->rec.wrbuf_iconv = 0;
1901     rc->rec.wrbuf_opac = 0;
1902     if (elementSetName)
1903         rc->elementSetName = odr_strdup (r->odr, elementSetName);
1904     else
1905         rc->elementSetName = 0;
1906
1907     if (syntax)
1908         rc->syntax = odr_strdup (r->odr, syntax);
1909     else
1910         rc->syntax = 0;
1911
1912     if (r->schema)
1913         rc->schema = odr_strdup (r->odr, r->schema);
1914     else
1915         rc->schema = 0;
1916
1917     rc->pos = pos;
1918     rc->next = r->record_cache;
1919     r->record_cache = rc;
1920 }
1921
1922 static ZOOM_record record_cache_lookup (ZOOM_resultset r, int pos)
1923 {
1924     ZOOM_record_cache rc;
1925     const char *elementSetName =
1926         ZOOM_resultset_option_get (r, "elementSetName");
1927     const char *syntax =
1928         ZOOM_resultset_option_get (r, "preferredRecordSyntax");
1929
1930     for (rc = r->record_cache; rc; rc = rc->next)
1931     {
1932         if (pos == rc->pos)
1933         {
1934             if (strcmp_null(r->schema, rc->schema))
1935                 continue;
1936             if (strcmp_null(elementSetName,rc->elementSetName))
1937                 continue;
1938             if (strcmp_null(syntax, rc->syntax))
1939                 continue;
1940             return &rc->rec;
1941         }
1942     }
1943     return 0;
1944 }
1945
1946 static void handle_records (ZOOM_connection c, Z_Records *sr,
1947                             int present_phase)
1948 {
1949     ZOOM_resultset resultset;
1950
1951     if (!c->tasks)
1952         return ;
1953     switch (c->tasks->which)
1954     {
1955     case ZOOM_TASK_SEARCH:
1956         resultset = c->tasks->u.search.resultset;
1957         break;
1958     case ZOOM_TASK_RETRIEVE:
1959         resultset = c->tasks->u.retrieve.resultset;
1960         break;
1961     default:
1962         return;
1963     }
1964     if (sr && sr->which == Z_Records_NSD)
1965     {
1966         Z_DiagRec dr, *dr_p = &dr;
1967         dr.which = Z_DiagRec_defaultFormat;
1968         dr.u.defaultFormat = sr->u.nonSurrogateDiagnostic;
1969
1970         response_diag (c, dr_p);
1971     }
1972     else if (sr && sr->which == Z_Records_multipleNSD)
1973     {
1974         if (sr->u.multipleNonSurDiagnostics->num_diagRecs >= 1)
1975             response_diag(c, sr->u.multipleNonSurDiagnostics->diagRecs[0]);
1976         else
1977             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
1978     }
1979     else
1980     {
1981         if (resultset->count + resultset->start > resultset->size)
1982             resultset->count = resultset->size - resultset->start;
1983         if (resultset->count < 0)
1984             resultset->count = 0;
1985         if (sr && sr->which == Z_Records_DBOSD)
1986         {
1987             int i;
1988             NMEM nmem = odr_extract_mem (c->odr_in);
1989             Z_NamePlusRecordList *p =
1990                 sr->u.databaseOrSurDiagnostics;
1991             for (i = 0; i<p->num_records; i++)
1992             {
1993                 record_cache_add (resultset, p->records[i],
1994                                   i+ resultset->start);
1995             }
1996             /* transfer our response to search_nmem .. we need it later */
1997             nmem_transfer (resultset->odr->mem, nmem);
1998             nmem_destroy (nmem);
1999             if (present_phase && p->num_records == 0)
2000             {
2001                 /* present response and we didn't get any records! */
2002                 Z_NamePlusRecord *myrec =
2003                     zget_surrogateDiagRec(resultset->odr, 0, 14, 0);
2004                 record_cache_add(resultset, myrec, resultset->start);
2005                 yaz_log(YLOG_LOG, "pseudo record 1, at pos %d",
2006                         resultset->start);
2007             }
2008         }
2009         else if (present_phase)
2010         {
2011             /* present response and we didn't get any records! */
2012             Z_NamePlusRecord *myrec =
2013                 zget_surrogateDiagRec(resultset->odr, 0, 14, 0);
2014             record_cache_add(resultset, myrec, resultset->start);
2015             yaz_log(YLOG_LOG, "pseudo record 1, at pos %d",
2016                     resultset->start);
2017         }
2018     }
2019 }
2020
2021 static void handle_present_response (ZOOM_connection c, Z_PresentResponse *pr)
2022 {
2023     handle_records (c, pr->records, 1);
2024 }
2025
2026 static void handle_search_response (ZOOM_connection c, Z_SearchResponse *sr)
2027 {
2028     ZOOM_resultset resultset;
2029     ZOOM_Event event;
2030
2031     yaz_log (log_level, "got search response");
2032
2033     if (!c->tasks || c->tasks->which != ZOOM_TASK_SEARCH)
2034         return ;
2035
2036     event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
2037     ZOOM_connection_put_event(c, event);
2038
2039     resultset = c->tasks->u.search.resultset;
2040
2041     resultset->size = *sr->resultCount;
2042     handle_records (c, sr->records, 0);
2043 }
2044
2045 static void sort_response (ZOOM_connection c, Z_SortResponse *res)
2046 {
2047     if (res->diagnostics && res->num_diagnostics > 0)
2048         response_diag (c, res->diagnostics[0]);
2049 }
2050
2051 static int scan_response (ZOOM_connection c, Z_ScanResponse *res)
2052 {
2053     NMEM nmem = odr_extract_mem (c->odr_in);
2054     ZOOM_scanset scan;
2055
2056     if (!c->tasks || c->tasks->which != ZOOM_TASK_SCAN)
2057         return 0;
2058     scan = c->tasks->u.scan.scan;
2059
2060     if (res->entries && res->entries->nonsurrogateDiagnostics)
2061         response_diag(c, res->entries->nonsurrogateDiagnostics[0]);
2062     scan->scan_response = res;
2063     nmem_transfer (scan->odr->mem, nmem);
2064     if (res->stepSize)
2065         ZOOM_options_set_int (scan->options, "stepSize", *res->stepSize);
2066     if (res->positionOfTerm)
2067         ZOOM_options_set_int (scan->options, "position", *res->positionOfTerm);
2068     if (res->scanStatus)
2069         ZOOM_options_set_int (scan->options, "scanStatus", *res->scanStatus);
2070     if (res->numberOfEntriesReturned)
2071         ZOOM_options_set_int (scan->options, "number",
2072                               *res->numberOfEntriesReturned);
2073     nmem_destroy (nmem);
2074     return 1;
2075 }
2076
2077 static zoom_ret send_sort (ZOOM_connection c,
2078                            ZOOM_resultset resultset)
2079 {
2080     if (c->error)
2081         resultset->r_sort_spec = 0;
2082     if (resultset->r_sort_spec)
2083     {
2084         Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_sortRequest);
2085         Z_SortRequest *req = apdu->u.sortRequest;
2086
2087         req->num_inputResultSetNames = 1;
2088         req->inputResultSetNames = (Z_InternationalString **)
2089             odr_malloc (c->odr_out, sizeof(*req->inputResultSetNames));
2090         req->inputResultSetNames[0] =
2091             odr_strdup (c->odr_out, resultset->setname);
2092         req->sortedResultSetName = odr_strdup (c->odr_out, resultset->setname);
2093         req->sortSequence = resultset->r_sort_spec;
2094         resultset->r_sort_spec = 0;
2095         return send_APDU (c, apdu);
2096     }
2097     return zoom_complete;
2098 }
2099
2100 static zoom_ret send_present (ZOOM_connection c)
2101 {
2102     Z_APDU *apdu = 0;
2103     Z_PresentRequest *req = 0;
2104     int i = 0;
2105     const char *syntax = 0;
2106     const char *elementSetName = 0;
2107     ZOOM_resultset  resultset;
2108
2109     if (!c->tasks)
2110         return zoom_complete;
2111
2112     switch (c->tasks->which)
2113     {
2114     case ZOOM_TASK_SEARCH:
2115         resultset = c->tasks->u.search.resultset;
2116         break;
2117     case ZOOM_TASK_RETRIEVE:
2118         resultset = c->tasks->u.retrieve.resultset;
2119         resultset->start = c->tasks->u.retrieve.start;
2120         resultset->count = c->tasks->u.retrieve.count;
2121
2122         if (resultset->start >= resultset->size)
2123             return zoom_complete;
2124         if (resultset->start + resultset->count > resultset->size)
2125             resultset->count = resultset->size - resultset->start;
2126         break;
2127     default:
2128         return zoom_complete;
2129     }
2130
2131     syntax = ZOOM_resultset_option_get (resultset, "preferredRecordSyntax");
2132     elementSetName = ZOOM_resultset_option_get (resultset, "elementSetName");
2133
2134     if (c->error)                  /* don't continue on error */
2135         return zoom_complete;
2136     if (resultset->start < 0)
2137         return zoom_complete;
2138     for (i = 0; i<resultset->count; i++)
2139     {
2140         ZOOM_record rec =
2141             record_cache_lookup (resultset, i + resultset->start);
2142         if (!rec)
2143             break;
2144     }
2145     if (i == resultset->count)
2146         return zoom_complete;
2147
2148     apdu = zget_APDU(c->odr_out, Z_APDU_presentRequest);
2149     req = apdu->u.presentRequest;
2150
2151     resultset->start += i;
2152     resultset->count -= i;
2153     *req->resultSetStartPoint = resultset->start + 1;
2154     *req->numberOfRecordsRequested = resultset->step>0 ?
2155         resultset->step : resultset->count;
2156     assert (*req->numberOfRecordsRequested > 0);
2157
2158     if (syntax && *syntax)
2159         req->preferredRecordSyntax =
2160             yaz_str_to_z3950oid (c->odr_out, CLASS_RECSYN, syntax);
2161
2162     if (resultset->schema && *resultset->schema)
2163     {
2164         Z_RecordComposition *compo = (Z_RecordComposition *)
2165             odr_malloc (c->odr_out, sizeof(*compo));
2166
2167         req->recordComposition = compo;
2168         compo->which = Z_RecordComp_complex;
2169         compo->u.complex = (Z_CompSpec *)
2170             odr_malloc(c->odr_out, sizeof(*compo->u.complex));
2171         compo->u.complex->selectAlternativeSyntax = (bool_t *)
2172             odr_malloc(c->odr_out, sizeof(bool_t));
2173         *compo->u.complex->selectAlternativeSyntax = 0;
2174
2175         compo->u.complex->generic = (Z_Specification *)
2176             odr_malloc(c->odr_out, sizeof(*compo->u.complex->generic));
2177
2178         compo->u.complex->generic->which = Z_Schema_oid;
2179         compo->u.complex->generic->schema.oid = (Odr_oid *)
2180             yaz_str_to_z3950oid (c->odr_out, CLASS_SCHEMA, resultset->schema);
2181
2182         if (!compo->u.complex->generic->schema.oid)
2183         {
2184             /* OID wasn't a schema! Try record syntax instead. */
2185
2186             compo->u.complex->generic->schema.oid = (Odr_oid *)
2187                 yaz_str_to_z3950oid (c->odr_out, CLASS_RECSYN, resultset->schema);
2188         }
2189         if (elementSetName && *elementSetName)
2190         {
2191             compo->u.complex->generic->elementSpec = (Z_ElementSpec *)
2192                 odr_malloc(c->odr_out, sizeof(Z_ElementSpec));
2193             compo->u.complex->generic->elementSpec->which =
2194                 Z_ElementSpec_elementSetName;
2195             compo->u.complex->generic->elementSpec->u.elementSetName =
2196                 odr_strdup (c->odr_out, elementSetName);
2197         }
2198         else
2199             compo->u.complex->generic->elementSpec = 0;
2200         compo->u.complex->num_dbSpecific = 0;
2201         compo->u.complex->dbSpecific = 0;
2202         compo->u.complex->num_recordSyntax = 0;
2203         compo->u.complex->recordSyntax = 0;
2204     }
2205     else if (elementSetName && *elementSetName)
2206     {
2207         Z_ElementSetNames *esn = (Z_ElementSetNames *)
2208             odr_malloc (c->odr_out, sizeof(*esn));
2209         Z_RecordComposition *compo = (Z_RecordComposition *)
2210             odr_malloc (c->odr_out, sizeof(*compo));
2211
2212         esn->which = Z_ElementSetNames_generic;
2213         esn->u.generic = odr_strdup (c->odr_out, elementSetName);
2214         compo->which = Z_RecordComp_simple;
2215         compo->u.simple = esn;
2216         req->recordComposition = compo;
2217     }
2218     req->resultSetId = odr_strdup(c->odr_out, resultset->setname);
2219     return send_APDU (c, apdu);
2220 }
2221
2222 ZOOM_API(ZOOM_scanset)
2223 ZOOM_connection_scan (ZOOM_connection c, const char *start)
2224 {
2225     ZOOM_scanset scan = (ZOOM_scanset) xmalloc (sizeof(*scan));
2226
2227     scan->connection = c;
2228     scan->odr = odr_createmem (ODR_DECODE);
2229     scan->options = ZOOM_options_create_with_parent (c->options);
2230     scan->refcount = 1;
2231     scan->scan_response = 0;
2232
2233     if ((scan->termListAndStartPoint =
2234          p_query_scan(scan->odr, PROTO_Z3950, &scan->attributeSet,
2235                       start)))
2236     {
2237         ZOOM_task task = ZOOM_connection_add_task (c, ZOOM_TASK_SCAN);
2238         task->u.scan.scan = scan;
2239
2240         (scan->refcount)++;
2241         if (!c->async)
2242         {
2243             while (ZOOM_event (1, &c))
2244                 ;
2245         }
2246     }
2247     return scan;
2248 }
2249
2250 ZOOM_API(void)
2251 ZOOM_scanset_destroy (ZOOM_scanset scan)
2252 {
2253     if (!scan)
2254         return;
2255     (scan->refcount)--;
2256     if (scan->refcount == 0)
2257     {
2258         odr_destroy (scan->odr);
2259
2260         ZOOM_options_destroy (scan->options);
2261         xfree (scan);
2262     }
2263 }
2264
2265 static zoom_ret send_package (ZOOM_connection c)
2266 {
2267     ZOOM_Event event;
2268     if (!c->tasks)
2269         return zoom_complete;
2270     assert (c->tasks->which == ZOOM_TASK_PACKAGE);
2271
2272     event = ZOOM_Event_create (ZOOM_EVENT_SEND_APDU);
2273     ZOOM_connection_put_event (c, event);
2274
2275     return do_write_ex (c, c->tasks->u.package->buf_out,
2276                         c->tasks->u.package->len_out);
2277 }
2278
2279 static zoom_ret send_scan (ZOOM_connection c)
2280 {
2281     ZOOM_scanset scan;
2282     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_scanRequest);
2283     Z_ScanRequest *req = apdu->u.scanRequest;
2284     if (!c->tasks)
2285         return zoom_complete;
2286     assert (c->tasks->which == ZOOM_TASK_SCAN);
2287     scan = c->tasks->u.scan.scan;
2288
2289     req->termListAndStartPoint = scan->termListAndStartPoint;
2290     req->attributeSet = scan->attributeSet;
2291
2292     *req->numberOfTermsRequested =
2293         ZOOM_options_get_int(scan->options, "number", 10);
2294
2295     req->preferredPositionInResponse =
2296         odr_intdup (c->odr_out,
2297                     ZOOM_options_get_int(scan->options, "position", 1));
2298
2299     req->stepSize =
2300         odr_intdup (c->odr_out,
2301                     ZOOM_options_get_int(scan->options, "stepSize", 0));
2302
2303     req->databaseNames = set_DatabaseNames (c, scan->options,
2304                                             &req->num_databaseNames);
2305
2306     return send_APDU (c, apdu);
2307 }
2308
2309 ZOOM_API(size_t)
2310 ZOOM_scanset_size (ZOOM_scanset scan)
2311 {
2312     if (!scan || !scan->scan_response || !scan->scan_response->entries)
2313         return 0;
2314     return scan->scan_response->entries->num_entries;
2315 }
2316
2317 ZOOM_API(const char *)
2318 ZOOM_scanset_term (ZOOM_scanset scan, size_t pos,
2319                    int *occ, int *len)
2320 {
2321     const char *term = 0;
2322     size_t noent = ZOOM_scanset_size (scan);
2323     Z_ScanResponse *res = scan->scan_response;
2324
2325     *len = 0;
2326     *occ = 0;
2327     if (pos >= noent)
2328         return 0;
2329     if (res->entries->entries[pos]->which == Z_Entry_termInfo)
2330     {
2331         Z_TermInfo *t = res->entries->entries[pos]->u.termInfo;
2332
2333         if (t->term->which == Z_Term_general)
2334         {
2335             term = (const char *) t->term->u.general->buf;
2336             *len = t->term->u.general->len;
2337         }
2338         *occ = t->globalOccurrences ? *t->globalOccurrences : 0;
2339     }
2340     return term;
2341 }
2342
2343 ZOOM_API(const char *)
2344 ZOOM_scanset_display_term (ZOOM_scanset scan, size_t pos,
2345                            int *occ, int *len)
2346 {
2347     const char *term = 0;
2348     size_t noent = ZOOM_scanset_size (scan);
2349     Z_ScanResponse *res = scan->scan_response;
2350
2351     *len = 0;
2352     *occ = 0;
2353     if (pos >= noent)
2354         return 0;
2355     if (res->entries->entries[pos]->which == Z_Entry_termInfo)
2356     {
2357         Z_TermInfo *t = res->entries->entries[pos]->u.termInfo;
2358
2359         if (t->displayTerm)
2360         {
2361             term = t->displayTerm;
2362             *len = strlen(term);
2363         }
2364         else if (t->term->which == Z_Term_general)
2365         {
2366             term = (const char *) t->term->u.general->buf;
2367             *len = t->term->u.general->len;
2368         }
2369         *occ = t->globalOccurrences ? *t->globalOccurrences : 0;
2370     }
2371     return term;
2372 }
2373
2374 ZOOM_API(const char *)
2375 ZOOM_scanset_option_get (ZOOM_scanset scan, const char *key)
2376 {
2377     return ZOOM_options_get (scan->options, key);
2378 }
2379
2380 ZOOM_API(void)
2381 ZOOM_scanset_option_set (ZOOM_scanset scan, const char *key,
2382                               const char *val)
2383 {
2384     ZOOM_options_set (scan->options, key, val);
2385 }
2386
2387 static Z_APDU *create_es_package (ZOOM_package p, int type)
2388 {
2389     const char *str;
2390     Z_APDU *apdu = zget_APDU(p->odr_out, Z_APDU_extendedServicesRequest);
2391     Z_ExtendedServicesRequest *req = apdu->u.extendedServicesRequest;
2392
2393     *req->function = Z_ExtendedServicesRequest_create;
2394
2395     str = ZOOM_options_get(p->options, "package-name");
2396     if (str && *str)
2397         req->packageName = nmem_strdup (p->odr_out->mem, str);
2398
2399     str = ZOOM_options_get(p->options, "user-id");
2400     if (str)
2401         req->userId = nmem_strdup (p->odr_out->mem, str);
2402
2403     req->packageType = yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2404                                               type);
2405
2406     str = ZOOM_options_get(p->options, "function");
2407     if (str)
2408     {
2409         if (!strcmp (str, "create"))
2410             *req->function = 1;
2411         if (!strcmp (str, "delete"))
2412             *req->function = 2;
2413         if (!strcmp (str, "modify"))
2414             *req->function = 3;
2415     }
2416     return apdu;
2417 }
2418
2419 static const char *ill_array_lookup (void *clientData, const char *idx)
2420 {
2421     ZOOM_package p = (ZOOM_package) clientData;
2422     return ZOOM_options_get (p->options, idx+4);
2423 }
2424
2425 static Z_External *encode_ill_request (ZOOM_package p)
2426 {
2427     ODR out = p->odr_out;
2428     ILL_Request *req;
2429     Z_External *r = 0;
2430     struct ill_get_ctl ctl;
2431
2432     ctl.odr = p->odr_out;
2433     ctl.clientData = p;
2434     ctl.f = ill_array_lookup;
2435
2436     req = ill_get_ILLRequest(&ctl, "ill", 0);
2437
2438     if (!ill_Request (out, &req, 0, 0))
2439     {
2440         int ill_request_size;
2441         char *ill_request_buf = odr_getbuf (out, &ill_request_size, 0);
2442         if (ill_request_buf)
2443             odr_setbuf (out, ill_request_buf, ill_request_size, 1);
2444         return 0;
2445     }
2446     else
2447     {
2448         oident oid;
2449         int illRequest_size = 0;
2450         char *illRequest_buf = odr_getbuf (out, &illRequest_size, 0);
2451
2452         oid.proto = PROTO_GENERAL;
2453         oid.oclass = CLASS_GENERAL;
2454         oid.value = VAL_ISO_ILL_1;
2455
2456         r = (Z_External *) odr_malloc (out, sizeof(*r));
2457         r->direct_reference = odr_oiddup(out,oid_getoidbyent(&oid));
2458         r->indirect_reference = 0;
2459         r->descriptor = 0;
2460         r->which = Z_External_single;
2461
2462         r->u.single_ASN1_type = (Odr_oct *)
2463             odr_malloc (out, sizeof(*r->u.single_ASN1_type));
2464         r->u.single_ASN1_type->buf = (unsigned char*)
2465             odr_malloc (out, illRequest_size);
2466         r->u.single_ASN1_type->len = illRequest_size;
2467         r->u.single_ASN1_type->size = illRequest_size;
2468         memcpy (r->u.single_ASN1_type->buf, illRequest_buf, illRequest_size);
2469     }
2470     return r;
2471 }
2472
2473 static Z_ItemOrder *encode_item_order(ZOOM_package p)
2474 {
2475     Z_ItemOrder *req = (Z_ItemOrder *) odr_malloc (p->odr_out, sizeof(*req));
2476     const char *str;
2477
2478     req->which = Z_IOItemOrder_esRequest;
2479     req->u.esRequest = (Z_IORequest *)
2480         odr_malloc(p->odr_out,sizeof(Z_IORequest));
2481
2482     /* to keep part ... */
2483     req->u.esRequest->toKeep = (Z_IOOriginPartToKeep *)
2484         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartToKeep));
2485     req->u.esRequest->toKeep->supplDescription = 0;
2486     req->u.esRequest->toKeep->contact = (Z_IOContact *)
2487         odr_malloc (p->odr_out, sizeof(*req->u.esRequest->toKeep->contact));
2488
2489     str = ZOOM_options_get(p->options, "contact-name");
2490     req->u.esRequest->toKeep->contact->name = str ?
2491         nmem_strdup (p->odr_out->mem, str) : 0;
2492
2493     str = ZOOM_options_get(p->options, "contact-phone");
2494     req->u.esRequest->toKeep->contact->phone = str ?
2495         nmem_strdup (p->odr_out->mem, str) : 0;
2496
2497     str = ZOOM_options_get(p->options, "contact-email");
2498     req->u.esRequest->toKeep->contact->email = str ?
2499         nmem_strdup (p->odr_out->mem, str) : 0;
2500
2501     req->u.esRequest->toKeep->addlBilling = 0;
2502
2503     /* not to keep part ... */
2504     req->u.esRequest->notToKeep = (Z_IOOriginPartNotToKeep *)
2505         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartNotToKeep));
2506
2507     str = ZOOM_options_get(p->options, "itemorder-setname");
2508     if (!str)
2509         str = "default";
2510
2511     if (!*str)
2512         req->u.esRequest->notToKeep->resultSetItem = 0;
2513     else
2514     {
2515         req->u.esRequest->notToKeep->resultSetItem = (Z_IOResultSetItem *)
2516            odr_malloc(p->odr_out, sizeof(Z_IOResultSetItem));
2517
2518         req->u.esRequest->notToKeep->resultSetItem->resultSetId =
2519            nmem_strdup (p->odr_out->mem, str);
2520         req->u.esRequest->notToKeep->resultSetItem->item =
2521             (int *) odr_malloc(p->odr_out, sizeof(int));
2522
2523         str = ZOOM_options_get(p->options, "itemorder-item");
2524         *req->u.esRequest->notToKeep->resultSetItem->item =
2525             (str ? atoi(str) : 1);
2526     }
2527     req->u.esRequest->notToKeep->itemRequest = encode_ill_request(p);
2528
2529     return req;
2530 }
2531
2532 Z_APDU *create_admin_package(ZOOM_package p, int type,
2533                              Z_ESAdminOriginPartToKeep **toKeepP,
2534                              Z_ESAdminOriginPartNotToKeep **notToKeepP)
2535 {
2536     Z_APDU *apdu = create_es_package (p, VAL_ADMINSERVICE);
2537     if (apdu)
2538     {
2539         Z_ESAdminOriginPartToKeep  *toKeep;
2540         Z_ESAdminOriginPartNotToKeep  *notToKeep;
2541         Z_External *r = (Z_External *) odr_malloc (p->odr_out, sizeof(*r));
2542         const char *first_db = "Default";
2543         int num_db;
2544         char **db = set_DatabaseNames(p->connection, p->options, &num_db);
2545         if (num_db > 0)
2546             first_db = db[0];
2547
2548         r->direct_reference =
2549             yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2550                                    VAL_ADMINSERVICE);
2551         r->descriptor = 0;
2552         r->indirect_reference = 0;
2553         r->which = Z_External_ESAdmin;
2554
2555         r->u.adminService = (Z_Admin *)
2556             odr_malloc(p->odr_out, sizeof(*r->u.adminService));
2557         r->u.adminService->which = Z_Admin_esRequest;
2558         r->u.adminService->u.esRequest = (Z_AdminEsRequest *)
2559             odr_malloc(p->odr_out, sizeof(*r->u.adminService->u.esRequest));
2560
2561         toKeep = r->u.adminService->u.esRequest->toKeep =
2562             (Z_ESAdminOriginPartToKeep *)
2563             odr_malloc(p->odr_out, sizeof(*r->u.adminService->u.esRequest->toKeep));
2564         toKeep->which = type;
2565         toKeep->databaseName = odr_strdup(p->odr_out, first_db);
2566         toKeep->u.create = odr_nullval();
2567         apdu->u.extendedServicesRequest->taskSpecificParameters = r;
2568
2569         r->u.adminService->u.esRequest->notToKeep = notToKeep =
2570             (Z_ESAdminOriginPartNotToKeep *)
2571             odr_malloc(p->odr_out,
2572                        sizeof(*r->u.adminService->u.esRequest->notToKeep));
2573         notToKeep->which = Z_ESAdminOriginPartNotToKeep_recordsWillFollow;
2574         notToKeep->u.recordsWillFollow = odr_nullval();
2575         if (toKeepP)
2576             *toKeepP = toKeep;
2577         if (notToKeepP)
2578             *notToKeepP = notToKeep;
2579     }
2580     return apdu;
2581 }
2582
2583 static Z_APDU *create_update_package(ZOOM_package p)
2584 {
2585     Z_APDU *apdu = 0;
2586     const char *first_db = "Default";
2587     int num_db;
2588     char **db = set_DatabaseNames(p->connection, p->options, &num_db);
2589     const char *action = ZOOM_options_get(p->options, "action");
2590     const char *recordIdOpaque = ZOOM_options_get(p->options, "recordIdOpaque");
2591     const char *recordIdNumber = ZOOM_options_get(p->options, "recordIdNumber");
2592     const char *record_buf = ZOOM_options_get(p->options, "record");
2593     const char *syntax_str = ZOOM_options_get(p->options, "syntax");
2594     int syntax_oid = VAL_NONE;
2595     int action_no = -1;
2596
2597     if (syntax_str)
2598         syntax_oid = oid_getvalbyname(syntax_str);
2599     if (!record_buf)
2600     {
2601         record_buf = "void";
2602         syntax_oid = VAL_SUTRS;
2603     }
2604     if (syntax_oid != VAL_NONE)
2605         syntax_oid = VAL_TEXT_XML;
2606
2607     if (num_db > 0)
2608         first_db = db[0];
2609
2610     if (!action)
2611         action = "specialUpdate";
2612
2613     if (!strcmp(action, "recordInsert"))
2614         action_no = Z_IUOriginPartToKeep_recordInsert;
2615     else if (!strcmp(action, "recordReplace"))
2616         action_no = Z_IUOriginPartToKeep_recordReplace;
2617     else if (!strcmp(action, "recordDelete"))
2618         action_no = Z_IUOriginPartToKeep_recordDelete;
2619     else if (!strcmp(action, "elementUpdate"))
2620         action_no = Z_IUOriginPartToKeep_elementUpdate;
2621     else if (!strcmp(action, "specialUpdate"))
2622         action_no = Z_IUOriginPartToKeep_specialUpdate;
2623     else
2624         return 0;
2625
2626     apdu = create_es_package (p, VAL_DBUPDATE);
2627     if (apdu)
2628     {
2629         Z_IUOriginPartToKeep *toKeep;
2630         Z_IUSuppliedRecords *notToKeep;
2631         Z_External *r = (Z_External *)
2632             odr_malloc (p->odr_out, sizeof(*r));
2633
2634         apdu->u.extendedServicesRequest->taskSpecificParameters = r;
2635
2636         r->direct_reference =
2637             yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2638                                    VAL_DBUPDATE);
2639         r->descriptor = 0;
2640         r->which = Z_External_update;
2641         r->indirect_reference = 0;
2642         r->u.update = (Z_IUUpdate *)
2643             odr_malloc(p->odr_out, sizeof(*r->u.update));
2644
2645         r->u.update->which = Z_IUUpdate_esRequest;
2646         r->u.update->u.esRequest = (Z_IUUpdateEsRequest *)
2647             odr_malloc(p->odr_out, sizeof(*r->u.update->u.esRequest));
2648         toKeep = r->u.update->u.esRequest->toKeep =
2649             (Z_IUOriginPartToKeep *)
2650             odr_malloc(p->odr_out, sizeof(*toKeep));
2651
2652         toKeep->databaseName = odr_strdup(p->odr_out, first_db);
2653         toKeep->schema = 0;
2654         toKeep->elementSetName = 0;
2655         toKeep->actionQualifier = 0;
2656         toKeep->action = odr_intdup(p->odr_out, action_no);
2657
2658         notToKeep = r->u.update->u.esRequest->notToKeep =
2659             (Z_IUSuppliedRecords *)
2660             odr_malloc(p->odr_out, sizeof(*notToKeep));
2661         notToKeep->num = 1;
2662         notToKeep->elements = (Z_IUSuppliedRecords_elem **)
2663             odr_malloc(p->odr_out, sizeof(*notToKeep->elements));
2664         notToKeep->elements[0] = (Z_IUSuppliedRecords_elem *)
2665             odr_malloc(p->odr_out, sizeof(**notToKeep->elements));
2666         notToKeep->elements[0]->which = Z_IUSuppliedRecords_elem_opaque;
2667         if (recordIdOpaque)
2668         {
2669             notToKeep->elements[0]->u.opaque = (Odr_oct *)
2670                 odr_malloc (p->odr_out, sizeof(Odr_oct));
2671             notToKeep->elements[0]->u.opaque->size =
2672                 notToKeep->elements[0]->u.opaque->len = strlen(recordIdOpaque);
2673             notToKeep->elements[0]->u.opaque->buf = (unsigned char*)
2674                 odr_strdup(p->odr_out, recordIdOpaque);
2675         }
2676         else if (recordIdNumber)
2677         {
2678             notToKeep->elements[0]->which = Z_IUSuppliedRecords_elem_number;
2679
2680             notToKeep->elements[0]->u.number =
2681                 odr_intdup(p->odr_out, atoi(recordIdNumber));
2682         }
2683         else
2684             notToKeep->elements[0]->u.opaque = 0;
2685         notToKeep->elements[0]->supplementalId = 0;
2686         notToKeep->elements[0]->correlationInfo = 0;
2687         notToKeep->elements[0]->record =
2688             z_ext_record(p->odr_out, syntax_oid,
2689                          record_buf, strlen(record_buf));
2690     }
2691     if (0 && apdu)
2692     {
2693        ODR print = odr_createmem(ODR_PRINT);
2694
2695        z_APDU(print, &apdu, 0, 0);
2696        odr_destroy(print);
2697     }
2698     return apdu;
2699 }
2700
2701 ZOOM_API(void)
2702     ZOOM_package_send (ZOOM_package p, const char *type)
2703 {
2704     Z_APDU *apdu = 0;
2705     ZOOM_connection c;
2706     if (!p)
2707         return;
2708     c = p->connection;
2709     odr_reset (p->odr_out);
2710     xfree (p->buf_out);
2711     p->buf_out = 0;
2712     if (!strcmp(type, "itemorder"))
2713     {
2714         apdu = create_es_package (p, VAL_ITEMORDER);
2715         if (apdu)
2716         {
2717             Z_External *r = (Z_External *) odr_malloc (p->odr_out, sizeof(*r));
2718
2719             r->direct_reference =
2720                 yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2721                                        VAL_ITEMORDER);
2722             r->descriptor = 0;
2723             r->which = Z_External_itemOrder;
2724             r->indirect_reference = 0;
2725             r->u.itemOrder = encode_item_order (p);
2726
2727             apdu->u.extendedServicesRequest->taskSpecificParameters = r;
2728         }
2729     }
2730     else if (!strcmp(type, "create"))  /* create database */
2731     {
2732         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_create,
2733                                     0, 0);
2734     }
2735     else if (!strcmp(type, "drop"))  /* drop database */
2736     {
2737         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_drop,
2738                                     0, 0);
2739     }
2740     else if (!strcmp(type, "commit"))  /* commit changes */
2741     {
2742         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_commit,
2743                                     0, 0);
2744     }
2745     else if (!strcmp(type, "update")) /* update record(s) */
2746     {
2747         apdu = create_update_package(p);
2748     }
2749     if (apdu)
2750     {
2751         if (encode_APDU(p->connection, apdu, p->odr_out) == 0)
2752         {
2753             char *buf;
2754
2755             ZOOM_task task = ZOOM_connection_add_task (c, ZOOM_TASK_PACKAGE);
2756             task->u.package = p;
2757             buf = odr_getbuf(p->odr_out, &p->len_out, 0);
2758             p->buf_out = (char *) xmalloc (p->len_out);
2759             memcpy (p->buf_out, buf, p->len_out);
2760
2761             (p->refcount)++;
2762             if (!c->async)
2763             {
2764                 while (ZOOM_event (1, &c))
2765                     ;
2766             }
2767         }
2768     }
2769 }
2770
2771 ZOOM_API(ZOOM_package)
2772     ZOOM_connection_package (ZOOM_connection c, ZOOM_options options)
2773 {
2774     ZOOM_package p = (ZOOM_package) xmalloc (sizeof(*p));
2775
2776     p->connection = c;
2777     p->odr_out = odr_createmem (ODR_ENCODE);
2778     p->options = ZOOM_options_create_with_parent2 (options, c->options);
2779     p->refcount = 1;
2780     p->buf_out = 0;
2781     p->len_out = 0;
2782     return p;
2783 }
2784
2785 ZOOM_API(void)
2786     ZOOM_package_destroy(ZOOM_package p)
2787 {
2788     if (!p)
2789         return;
2790     (p->refcount)--;
2791     if (p->refcount == 0)
2792     {
2793         odr_destroy (p->odr_out);
2794         xfree (p->buf_out);
2795
2796         ZOOM_options_destroy (p->options);
2797         xfree (p);
2798     }
2799 }
2800
2801 ZOOM_API(const char *)
2802 ZOOM_package_option_get (ZOOM_package p, const char *key)
2803 {
2804     return ZOOM_options_get (p->options, key);
2805 }
2806
2807
2808 ZOOM_API(void)
2809 ZOOM_package_option_set (ZOOM_package p, const char *key,
2810                               const char *val)
2811 {
2812     ZOOM_options_set (p->options, key, val);
2813 }
2814
2815 static int ZOOM_connection_exec_task (ZOOM_connection c)
2816 {
2817     ZOOM_task task = c->tasks;
2818     zoom_ret ret = zoom_complete;
2819
2820     if (!task)
2821     {
2822         yaz_log (log_level, "ZOOM_connection_exec_task task=<null>");
2823         return 0;
2824     }
2825     yaz_log (log_level, "ZOOM_connection_exec_task type=%d run=%d",
2826              task->which, task->running);
2827     if (c->error != ZOOM_ERROR_NONE)
2828     {
2829         yaz_log (log_level, "remove tasks because of error = %d", c->error);
2830         ZOOM_connection_remove_tasks (c);
2831         return 0;
2832     }
2833     if (task->running)
2834     {
2835         yaz_log (log_level, "task already running");
2836         return 0;
2837     }
2838     task->running = 1;
2839     ret = zoom_complete;
2840     if (c->cs || task->which == ZOOM_TASK_CONNECT)
2841     {
2842         switch (task->which)
2843         {
2844         case ZOOM_TASK_SEARCH:
2845             if (c->proto == PROTO_HTTP)
2846                 ret = ZOOM_connection_srw_send_search(c);
2847             else
2848                 ret = ZOOM_connection_send_search(c);
2849             break;
2850         case ZOOM_TASK_RETRIEVE:
2851             if (c->proto == PROTO_HTTP)
2852                 ret = ZOOM_connection_srw_send_search(c);
2853             else
2854                 ret = send_present (c);
2855             break;
2856         case ZOOM_TASK_CONNECT:
2857             ret = do_connect(c);
2858             break;
2859         case ZOOM_TASK_SCAN:
2860             ret = send_scan(c);
2861             break;
2862         case ZOOM_TASK_PACKAGE:
2863             ret = send_package(c);
2864             break;
2865         case ZOOM_TASK_SORT:
2866             c->tasks->u.sort.resultset->r_sort_spec =
2867                 c->tasks->u.sort.q->sort_spec;
2868             ret = send_sort(c, c->tasks->u.sort.resultset);
2869             break;
2870         }
2871     }
2872     else
2873     {
2874         yaz_log (log_level, "remove tasks because no connection exist");
2875         ZOOM_connection_remove_tasks (c);
2876     }
2877     if (ret == zoom_complete)
2878     {
2879         yaz_log (log_level, "task removed (complete)");
2880         ZOOM_connection_remove_task (c);
2881         return 0;
2882     }
2883     yaz_log (log_level, "task pending");
2884     return 1;
2885 }
2886
2887 static zoom_ret send_sort_present (ZOOM_connection c)
2888 {
2889     zoom_ret r = zoom_complete;
2890
2891     if (c->tasks && c->tasks->which == ZOOM_TASK_SEARCH)
2892         r = send_sort (c, c->tasks->u.search.resultset);
2893     if (r == zoom_complete)
2894         r = send_present (c);
2895     return r;
2896 }
2897
2898 static int es_response (ZOOM_connection c,
2899                         Z_ExtendedServicesResponse *res)
2900 {
2901     if (!c->tasks || c->tasks->which != ZOOM_TASK_PACKAGE)
2902         return 0;
2903     if (res->diagnostics && res->num_diagnostics > 0)
2904         response_diag(c, res->diagnostics[0]);
2905     if (res->taskPackage &&
2906         res->taskPackage->which == Z_External_extendedService)
2907     {
2908         Z_TaskPackage *taskPackage = res->taskPackage->u.extendedService;
2909         Odr_oct *id = taskPackage->targetReference;
2910
2911         if (id)
2912             ZOOM_options_setl (c->tasks->u.package->options,
2913                                "targetReference", (char*) id->buf, id->len);
2914     }
2915     return 1;
2916 }
2917
2918
2919 static void handle_apdu (ZOOM_connection c, Z_APDU *apdu)
2920 {
2921     Z_InitResponse *initrs;
2922
2923     c->mask = 0;
2924     yaz_log (log_level, "recv APDU type=%d", apdu->which);
2925     switch(apdu->which)
2926     {
2927     case Z_APDU_initResponse:
2928         initrs = apdu->u.initResponse;
2929         ZOOM_connection_option_set(c, "serverImplementationId",
2930                                    initrs->implementationId ?
2931                                    initrs->implementationId : "");
2932         ZOOM_connection_option_set(c, "serverImplementationName",
2933                                    initrs->implementationName ?
2934                                    initrs->implementationName : "");
2935         ZOOM_connection_option_set(c, "serverImplementationVersion",
2936                                    initrs->implementationVersion ?
2937                                    initrs->implementationVersion : "");
2938         /* Set the three old options too, for old applications */
2939         ZOOM_connection_option_set(c, "targetImplementationId",
2940                                    initrs->implementationId ?
2941                                    initrs->implementationId : "");
2942         ZOOM_connection_option_set(c, "targetImplementationName",
2943                                    initrs->implementationName ?
2944                                    initrs->implementationName : "");
2945         ZOOM_connection_option_set(c, "targetImplementationVersion",
2946                                    initrs->implementationVersion ?
2947                                    initrs->implementationVersion : "");
2948         if (!*initrs->result)
2949         {
2950             set_ZOOM_error(c, ZOOM_ERROR_INIT, 0);
2951         }
2952         else
2953         {
2954             char *cookie =
2955                 yaz_oi_get_string_oidval (&apdu->u.initResponse->otherInfo,
2956                                           VAL_COOKIE, 1, 0);
2957             xfree (c->cookie_in);
2958             c->cookie_in = 0;
2959             if (cookie)
2960                 c->cookie_in = xstrdup(cookie);
2961             if (ODR_MASK_GET(initrs->options, Z_Options_namedResultSets) &&
2962                 ODR_MASK_GET(initrs->protocolVersion, Z_ProtocolVersion_3))
2963                 c->support_named_resultsets = 1;
2964             if (c->tasks)
2965             {
2966                 assert (c->tasks->which == ZOOM_TASK_CONNECT);
2967                 ZOOM_connection_remove_task (c);
2968             }
2969             ZOOM_connection_exec_task (c);
2970         }
2971         if (ODR_MASK_GET(initrs->options, Z_Options_negotiationModel))
2972         {
2973             NMEM tmpmem = nmem_create();
2974             Z_CharSetandLanguageNegotiation *p =
2975                 yaz_get_charneg_record(initrs->otherInfo);
2976
2977             if (p)
2978             {
2979                 char *charset = NULL, *lang = NULL;
2980                 int sel;
2981
2982                 yaz_get_response_charneg(tmpmem, p, &charset, &lang, &sel);
2983                 yaz_log(log_level, "Target accepted: charset %s, "
2984                         "language %s, select %d",
2985                         charset ? charset : "none", lang ? lang : "none", sel);
2986                 if (charset)
2987                     ZOOM_connection_option_set (c, "negotiation-charset",
2988                                                 charset);
2989                 if (lang)
2990                     ZOOM_connection_option_set (c, "negotiation-lang",
2991                                                 lang);
2992                 nmem_destroy(tmpmem);
2993             }
2994         }
2995         break;
2996     case Z_APDU_searchResponse:
2997         handle_search_response (c, apdu->u.searchResponse);
2998         if (send_sort_present (c) == zoom_complete)
2999             ZOOM_connection_remove_task (c);
3000         break;
3001     case Z_APDU_presentResponse:
3002         handle_present_response (c, apdu->u.presentResponse);
3003         if (send_present (c) == zoom_complete)
3004             ZOOM_connection_remove_task (c);
3005         break;
3006     case Z_APDU_sortResponse:
3007         sort_response (c, apdu->u.sortResponse);
3008         if (send_present (c) == zoom_complete)
3009             ZOOM_connection_remove_task (c);
3010         break;
3011     case Z_APDU_scanResponse:
3012         scan_response (c, apdu->u.scanResponse);
3013         ZOOM_connection_remove_task (c);
3014         break;
3015     case Z_APDU_extendedServicesResponse:
3016         es_response (c, apdu->u.extendedServicesResponse);
3017         ZOOM_connection_remove_task (c);
3018         break;
3019     case Z_APDU_close:
3020         if (c->reconnect_ok)
3021         {
3022             do_close(c);
3023             c->tasks->running = 0;
3024             ZOOM_connection_insert_task (c, ZOOM_TASK_CONNECT);
3025         }
3026         else
3027         {
3028             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, 0);
3029             do_close(c);
3030         }
3031         break;
3032     default:
3033         set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3034         do_close(c);
3035     }
3036 }
3037
3038 #if HAVE_XML2
3039 static void handle_srw_response(ZOOM_connection c,
3040                                 Z_SRW_searchRetrieveResponse *res)
3041 {
3042     ZOOM_resultset resultset = 0;
3043     int i;
3044     NMEM nmem;
3045     ZOOM_Event event;
3046
3047     if (!c->tasks)
3048         return;
3049
3050     if (c->tasks->which == ZOOM_TASK_SEARCH)
3051         resultset = c->tasks->u.search.resultset;
3052     else if (c->tasks->which == ZOOM_TASK_RETRIEVE)
3053         resultset = c->tasks->u.retrieve.resultset;
3054     else
3055         return ;
3056
3057     event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
3058     ZOOM_connection_put_event(c, event);
3059
3060     resultset->size = 0;
3061
3062     yaz_log(log_level, "got SRW response OK");
3063
3064     if (res->numberOfRecords)
3065         resultset->size = *res->numberOfRecords;
3066
3067     for (i = 0; i<res->num_records; i++)
3068     {
3069         int pos;
3070
3071         Z_NamePlusRecord *npr = (Z_NamePlusRecord *)
3072             odr_malloc(c->odr_in, sizeof(Z_NamePlusRecord));
3073
3074         if (res->records[i].recordPosition &&
3075             *res->records[i].recordPosition > 0)
3076             pos = *res->records[i].recordPosition - 1;
3077         else
3078             pos = resultset->start + i;
3079
3080         npr->databaseName = 0;
3081         npr->which = Z_NamePlusRecord_databaseRecord;
3082         npr->u.databaseRecord = (Z_External *)
3083             odr_malloc(c->odr_in, sizeof(Z_External));
3084         npr->u.databaseRecord->descriptor = 0;
3085         npr->u.databaseRecord->direct_reference =
3086             yaz_oidval_to_z3950oid(c->odr_in, CLASS_RECSYN, VAL_TEXT_XML);
3087         npr->u.databaseRecord->which = Z_External_octet;
3088         npr->u.databaseRecord->u.octet_aligned = (Odr_oct *)
3089             odr_malloc(c->odr_in, sizeof(Odr_oct));
3090         npr->u.databaseRecord->u.octet_aligned->buf = (unsigned char*)
3091             res->records[i].recordData_buf;
3092         npr->u.databaseRecord->u.octet_aligned->len =
3093             npr->u.databaseRecord->u.octet_aligned->size =
3094             res->records[i].recordData_len;
3095         record_cache_add (resultset, npr, pos);
3096     }
3097     if (res->num_diagnostics > 0)
3098     {
3099         const char *uri = res->diagnostics[0].uri;
3100         if (uri)
3101         {
3102             int code = 0;
3103             const char *cp;
3104             if ((cp = strrchr(uri, '/')))
3105                 code = atoi(cp+1);
3106             set_dset_error(c, code, uri,
3107                            res->diagnostics[0].details, 0);
3108         }
3109     }
3110     nmem = odr_extract_mem(c->odr_in);
3111     nmem_transfer(resultset->odr->mem, nmem);
3112     nmem_destroy(nmem);
3113 }
3114 #endif
3115
3116 #if HAVE_XML2
3117 static void handle_http(ZOOM_connection c, Z_HTTP_Response *hres)
3118 {
3119     int ret = -1;
3120     const char *content_type = z_HTTP_header_lookup(hres->headers,
3121                                                     "Content-Type");
3122     const char *connection_head = z_HTTP_header_lookup(hres->headers,
3123                                                        "Connection");
3124     c->mask = 0;
3125     yaz_log (log_level, "handle_http");
3126
3127     if (content_type && !yaz_strcmp_del("text/xml", content_type, "; "))
3128     {
3129         Z_SOAP *soap_package = 0;
3130         ODR o = c->odr_in;
3131         Z_SOAP_Handler soap_handlers[2] = {
3132             {"http://www.loc.gov/zing/srw/", 0,
3133              (Z_SOAP_fun) yaz_srw_codec},
3134             {0, 0, 0}
3135         };
3136         ret = z_soap_codec(o, &soap_package,
3137                            &hres->content_buf, &hres->content_len,
3138                            soap_handlers);
3139         if (!ret && soap_package->which == Z_SOAP_generic &&
3140             soap_package->u.generic->no == 0)
3141         {
3142             Z_SRW_PDU *sr = (Z_SRW_PDU*) soap_package->u.generic->p;
3143             if (sr->which == Z_SRW_searchRetrieve_response)
3144                 handle_srw_response(c, sr->u.response);
3145             else
3146                 ret = -1;
3147         }
3148         else if (!ret && (soap_package->which == Z_SOAP_fault
3149                           || soap_package->which == Z_SOAP_error))
3150         {
3151             set_HTTP_error(c, hres->code,
3152                            soap_package->u.fault->fault_code,
3153                            soap_package->u.fault->fault_string);
3154         }
3155         else
3156             ret = -1;
3157     }
3158     if (ret)
3159     {
3160         if (hres->code != 200)
3161             set_HTTP_error(c, hres->code, 0, 0);
3162         else
3163             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3164         do_close (c);
3165     }
3166     ZOOM_connection_remove_task(c);
3167     if (!strcmp(hres->version, "1.0"))
3168     {
3169         /* HTTP 1.0: only if Keep-Alive we stay alive.. */
3170         if (!connection_head || strcmp(connection_head, "Keep-Alive"))
3171             do_close(c);
3172     }
3173     else
3174     {
3175         /* HTTP 1.1: only if no close we stay alive .. */
3176         if (connection_head && !strcmp(connection_head, "close"))
3177             do_close(c);
3178     }
3179 }
3180 #endif
3181
3182 static int do_read (ZOOM_connection c)
3183 {
3184     int r, more;
3185     ZOOM_Event event;
3186
3187     event = ZOOM_Event_create (ZOOM_EVENT_RECV_DATA);
3188     ZOOM_connection_put_event (c, event);
3189
3190     r = cs_get (c->cs, &c->buf_in, &c->len_in);
3191     more = cs_more(c->cs);
3192     yaz_log (log_level, "do_read len=%d more=%d", r, more);
3193     if (r == 1)
3194         return 0;
3195     if (r <= 0)
3196     {
3197         if (c->reconnect_ok)
3198         {
3199             do_close (c);
3200             c->reconnect_ok = 0;
3201             yaz_log (log_level, "reconnect read");
3202             c->tasks->running = 0;
3203             ZOOM_connection_insert_task (c, ZOOM_TASK_CONNECT);
3204         }
3205         else
3206         {
3207             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, 0);
3208             do_close (c);
3209         }
3210     }
3211     else
3212     {
3213         Z_GDU *gdu;
3214         ZOOM_Event event;
3215
3216         odr_reset (c->odr_in);
3217         odr_setbuf (c->odr_in, c->buf_in, r, 0);
3218         event = ZOOM_Event_create (ZOOM_EVENT_RECV_APDU);
3219         ZOOM_connection_put_event (c, event);
3220
3221         if (!z_GDU (c->odr_in, &gdu, 0, 0))
3222         {
3223             int x;
3224             int err = odr_geterrorx(c->odr_in, &x);
3225             char msg[60];
3226             const char *element = odr_getelement(c->odr_in);
3227             sprintf (msg, "ODR code %d:%d element=%-20s",
3228                      err, x, element ? element : "<unknown>");
3229             set_ZOOM_error(c, ZOOM_ERROR_DECODE, msg);
3230             do_close (c);
3231         }
3232         else if (gdu->which == Z_GDU_Z3950)
3233             handle_apdu (c, gdu->u.z3950);
3234         else if (gdu->which == Z_GDU_HTTP_Response)
3235         {
3236 #if HAVE_XML2
3237             handle_http (c, gdu->u.HTTP_Response);
3238 #else
3239             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3240             do_close (c);
3241 #endif
3242         }
3243         c->reconnect_ok = 0;
3244     }
3245     return 1;
3246 }
3247
3248 static zoom_ret do_write_ex (ZOOM_connection c, char *buf_out, int len_out)
3249 {
3250     int r;
3251     ZOOM_Event event;
3252
3253     event = ZOOM_Event_create(ZOOM_EVENT_SEND_DATA);
3254     ZOOM_connection_put_event (c, event);
3255
3256     yaz_log (log_level, "do_write_ex len=%d", len_out);
3257     if ((r = cs_put(c->cs, buf_out, len_out)) < 0)
3258     {
3259         if (c->reconnect_ok)
3260         {
3261             do_close (c);
3262             c->reconnect_ok = 0;
3263             yaz_log (log_level, "reconnect write");
3264             c->tasks->running = 0;
3265             ZOOM_connection_insert_task (c, ZOOM_TASK_CONNECT);
3266             return zoom_pending;
3267         }
3268         if (c->state == STATE_CONNECTING)
3269             set_ZOOM_error(c, ZOOM_ERROR_CONNECT, 0);
3270         else
3271             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, 0);
3272         do_close (c);
3273         return zoom_complete;
3274     }
3275     else if (r == 1)
3276     {
3277         c->mask = ZOOM_SELECT_EXCEPT;
3278         if (c->cs->io_pending & CS_WANT_WRITE)
3279             c->mask += ZOOM_SELECT_WRITE;
3280         if (c->cs->io_pending & CS_WANT_READ)
3281             c->mask += ZOOM_SELECT_READ;
3282         yaz_log (log_level, "do_write_ex 1 mask=%d", c->mask);
3283     }
3284     else
3285     {
3286         c->mask = ZOOM_SELECT_READ|ZOOM_SELECT_EXCEPT;
3287         yaz_log (log_level, "do_write_ex 2 mask=%d", c->mask);
3288     }
3289     return zoom_pending;
3290 }
3291
3292 static zoom_ret do_write(ZOOM_connection c)
3293 {
3294     return do_write_ex (c, c->buf_out, c->len_out);
3295 }
3296
3297
3298 ZOOM_API(const char *)
3299 ZOOM_connection_option_get (ZOOM_connection c, const char *key)
3300 {
3301     return ZOOM_options_get (c->options, key);
3302 }
3303
3304 ZOOM_API(void)
3305 ZOOM_connection_option_set (ZOOM_connection c, const char *key,
3306                             const char *val)
3307 {
3308     ZOOM_options_set (c->options, key, val);
3309 }
3310
3311 ZOOM_API(void)
3312 ZOOM_connection_option_setl (ZOOM_connection c, const char *key,
3313                              const char *val, int len)
3314 {
3315     ZOOM_options_setl (c->options, key, val, len);
3316 }
3317
3318 ZOOM_API(const char *)
3319 ZOOM_resultset_option_get (ZOOM_resultset r, const char *key)
3320 {
3321     return ZOOM_options_get (r->options, key);
3322 }
3323
3324 ZOOM_API(void)
3325 ZOOM_resultset_option_set (ZOOM_resultset r, const char *key,
3326                                   const char *val)
3327 {
3328     ZOOM_options_set (r->options, key, val);
3329 }
3330
3331
3332 ZOOM_API(int)
3333 ZOOM_connection_errcode (ZOOM_connection c)
3334 {
3335     return ZOOM_connection_error (c, 0, 0);
3336 }
3337
3338 ZOOM_API(const char *)
3339 ZOOM_connection_errmsg (ZOOM_connection c)
3340 {
3341     const char *msg;
3342     ZOOM_connection_error (c, &msg, 0);
3343     return msg;
3344 }
3345
3346 ZOOM_API(const char *)
3347 ZOOM_connection_addinfo (ZOOM_connection c)
3348 {
3349     const char *addinfo;
3350     ZOOM_connection_error (c, 0, &addinfo);
3351     return addinfo;
3352 }
3353
3354 ZOOM_API(const char *)
3355 ZOOM_diag_str (int error)
3356 {
3357     switch (error)
3358     {
3359     case ZOOM_ERROR_NONE:
3360         return "No error";
3361     case ZOOM_ERROR_CONNECT:
3362         return "Connect failed";
3363     case ZOOM_ERROR_MEMORY:
3364         return "Out of memory";
3365     case ZOOM_ERROR_ENCODE:
3366         return "Encoding failed";
3367     case ZOOM_ERROR_DECODE:
3368         return "Decoding failed";
3369     case ZOOM_ERROR_CONNECTION_LOST:
3370         return "Connection lost";
3371     case ZOOM_ERROR_INIT:
3372         return "Init rejected";
3373     case ZOOM_ERROR_INTERNAL:
3374         return "Internal failure";
3375     case ZOOM_ERROR_TIMEOUT:
3376         return "Timeout";
3377     case ZOOM_ERROR_UNSUPPORTED_PROTOCOL:
3378         return "Unsupported protocol";
3379     case ZOOM_ERROR_UNSUPPORTED_QUERY:
3380         return "Unsupported query type";
3381     case ZOOM_ERROR_INVALID_QUERY:
3382         return "Invalid query";
3383     default:
3384         return diagbib1_str (error);
3385     }
3386 }
3387
3388 ZOOM_API(int)
3389 ZOOM_connection_error_x (ZOOM_connection c, const char **cp,
3390                          const char **addinfo, const char **diagset)
3391 {
3392     int error = c->error;
3393     if (cp)
3394     {
3395         if (!c->diagset || !strcmp(c->diagset, "ZOOM"))
3396             *cp = ZOOM_diag_str(error);
3397         else if (!strcmp(c->diagset, "HTTP"))
3398             *cp = z_HTTP_errmsg(c->error);
3399         else if (!strcmp(c->diagset, "Bib-1"))
3400             *cp = ZOOM_diag_str(error);
3401         else if (!strcmp(c->diagset, "info:srw/diagnostic/1"))
3402             *cp = yaz_diag_srw_str(c->error);
3403         else
3404             *cp = "Unknown error and diagnostic set";
3405     }
3406     if (addinfo)
3407         *addinfo = c->addinfo ? c->addinfo : "";
3408     if (diagset)
3409         *diagset = c->diagset ? c->diagset : "";
3410     return c->error;
3411 }
3412
3413 ZOOM_API(int)
3414 ZOOM_connection_error (ZOOM_connection c, const char **cp,
3415                        const char **addinfo)
3416 {
3417     return ZOOM_connection_error_x(c, cp, addinfo, 0);
3418 }
3419
3420 static int ZOOM_connection_do_io(ZOOM_connection c, int mask)
3421 {
3422     ZOOM_Event event = 0;
3423     int r = cs_look(c->cs);
3424     yaz_log (log_level, "ZOOM_connection_do_io c=%p mask=%d cs_look=%d",
3425              c, mask, r);
3426
3427     if (r == CS_NONE)
3428     {
3429         event = ZOOM_Event_create (ZOOM_EVENT_CONNECT);
3430         set_ZOOM_error(c, ZOOM_ERROR_CONNECT, 0);
3431         do_close (c);
3432         ZOOM_connection_put_event (c, event);
3433     }
3434     else if (r == CS_CONNECT)
3435     {
3436         int ret;
3437         event = ZOOM_Event_create (ZOOM_EVENT_CONNECT);
3438
3439         ret = cs_rcvconnect (c->cs);
3440         yaz_log (log_level, "cs_rcvconnect returned %d", ret);
3441         if (ret == 1)
3442         {
3443             c->mask = ZOOM_SELECT_EXCEPT;
3444             if (c->cs->io_pending & CS_WANT_WRITE)
3445                 c->mask += ZOOM_SELECT_WRITE;
3446             if (c->cs->io_pending & CS_WANT_READ)
3447                 c->mask += ZOOM_SELECT_READ;
3448             ZOOM_connection_put_event (c, event);
3449         }
3450         else if (ret == 0)
3451         {
3452             ZOOM_connection_put_event (c, event);
3453             get_cert(c);
3454             if (c->proto == PROTO_Z3950)
3455                 ZOOM_connection_send_init(c);
3456             else
3457             {
3458                 /* no init request for SRW .. */
3459                 assert (c->tasks->which == ZOOM_TASK_CONNECT);
3460                 ZOOM_connection_remove_task (c);
3461                 c->mask = 0;
3462                 ZOOM_connection_exec_task (c);
3463             }
3464             c->state = STATE_ESTABLISHED;
3465         }
3466         else
3467         {
3468             set_ZOOM_error(c, ZOOM_ERROR_CONNECT, 0);
3469             do_close (c);
3470             ZOOM_connection_put_event (c, event);
3471         }
3472     }
3473     else
3474     {
3475         if (mask & ZOOM_SELECT_READ)
3476             do_read (c);
3477         if (c->cs && (mask & ZOOM_SELECT_WRITE))
3478             do_write (c);
3479     }
3480     return 1;
3481 }
3482
3483 ZOOM_API(int)
3484 ZOOM_connection_last_event(ZOOM_connection cs)
3485 {
3486     if (!cs)
3487         return ZOOM_EVENT_NONE;
3488     return cs->last_event;
3489 }
3490
3491 ZOOM_API(int)
3492 ZOOM_event (int no, ZOOM_connection *cs)
3493 {
3494     int timeout = 5000;
3495 #if HAVE_SYS_POLL_H
3496     struct pollfd pollfds[1024];
3497     ZOOM_connection poll_cs[1024];
3498 #else
3499     struct timeval tv;
3500     fd_set input, output, except;
3501 #endif
3502     int i, r, nfds;
3503     int max_fd = 0;
3504
3505     for (i = 0; i<no; i++)
3506     {
3507         ZOOM_connection c = cs[i];
3508         ZOOM_Event event;
3509         if (c && (event = ZOOM_connection_get_event(c)))
3510         {
3511             ZOOM_Event_destroy (event);
3512             return i+1;
3513         }
3514     }
3515     for (i = 0; i<no; i++)
3516     {
3517         ZOOM_connection c = cs[i];
3518         ZOOM_Event event;
3519         if (c && ZOOM_connection_exec_task (c))
3520         {
3521             if ((event = ZOOM_connection_get_event(c)))
3522             {
3523                 ZOOM_Event_destroy (event);
3524                 return i+1;
3525             }
3526         }
3527     }
3528 #if HAVE_SYS_POLL_H
3529
3530 #else
3531     FD_ZERO (&input);
3532     FD_ZERO (&output);
3533     FD_ZERO (&except);
3534 #endif
3535     nfds = 0;
3536     for (i = 0; i<no; i++)
3537     {
3538         ZOOM_connection c = cs[i];
3539         int fd, mask;
3540         int this_timeout;
3541
3542         if (!c)
3543             continue;
3544         fd = z3950_connection_socket(c);
3545         mask = z3950_connection_mask(c);
3546
3547         if (fd == -1)
3548             continue;
3549         if (max_fd < fd)
3550             max_fd = fd;
3551
3552         this_timeout = ZOOM_options_get_int (c->options, "timeout", -1);
3553         if (this_timeout != -1 && this_timeout < timeout)
3554             timeout = this_timeout;
3555 #if HAVE_SYS_POLL_H
3556         if (mask)
3557         {
3558             short poll_events = 0;
3559
3560             if (mask & ZOOM_SELECT_READ)
3561                 poll_events += POLLIN;
3562             if (mask & ZOOM_SELECT_WRITE)
3563                 poll_events += POLLOUT;
3564             if (mask & ZOOM_SELECT_EXCEPT)
3565                 poll_events += POLLERR;
3566             pollfds[nfds].fd = fd;
3567             pollfds[nfds].events = poll_events;
3568             pollfds[nfds].revents = 0;
3569             poll_cs[nfds] = c;
3570             nfds++;
3571         }
3572 #else
3573         if (mask & ZOOM_SELECT_READ)
3574         {
3575             FD_SET (fd, &input);
3576             nfds++;
3577         }
3578         if (mask & ZOOM_SELECT_WRITE)
3579         {
3580             FD_SET (fd, &output);
3581             nfds++;
3582         }
3583         if (mask & ZOOM_SELECT_EXCEPT)
3584         {
3585             FD_SET (fd, &except);
3586             nfds++;
3587         }
3588 #endif
3589     }
3590     if (timeout >= 5000)
3591         timeout = 30;
3592
3593     if (!nfds)
3594         return 0;
3595
3596 #if HAVE_SYS_POLL_H
3597     r = poll (pollfds, nfds, timeout * 1000);
3598     for (i = 0; i<nfds; i++)
3599     {
3600         ZOOM_connection c = poll_cs[i];
3601         if (r && c->mask)
3602         {
3603             int mask = 0;
3604             if (pollfds[i].revents & POLLIN)
3605                 mask += ZOOM_SELECT_READ;
3606             if (pollfds[i].revents & POLLOUT)
3607                 mask += ZOOM_SELECT_WRITE;
3608             if (pollfds[i].revents & POLLERR)
3609                 mask += ZOOM_SELECT_EXCEPT;
3610             if (mask)
3611                 ZOOM_connection_do_io(c, mask);
3612         }
3613         else if (r == 0 && c->mask)
3614         {
3615             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_TIMEOUT);
3616             /* timeout and this connection was waiting */
3617             set_ZOOM_error(c, ZOOM_ERROR_TIMEOUT, 0);
3618             do_close (c);
3619             ZOOM_connection_put_event(c, event);
3620         }
3621     }
3622 #else
3623     tv.tv_sec = timeout;
3624     tv.tv_usec = 0;
3625     yaz_log (log_level, "select start");
3626     r = select (max_fd+1, &input, &output, &except, &tv);
3627     yaz_log (log_level, "select stop, returned r=%d", r);
3628     for (i = 0; i<no; i++)
3629     {
3630         ZOOM_connection c = cs[i];
3631         int fd, mask;
3632
3633         if (!c)
3634             continue;
3635         fd = z3950_connection_socket(c);
3636         mask = 0;
3637         if (r && c->mask)
3638         {
3639             /* no timeout and real socket */
3640             if (FD_ISSET(fd, &input))
3641                 mask += ZOOM_SELECT_READ;
3642             if (FD_ISSET(fd, &output))
3643                 mask += ZOOM_SELECT_WRITE;
3644             if (FD_ISSET(fd, &except))
3645                 mask += ZOOM_SELECT_EXCEPT;
3646             if (mask)
3647                 ZOOM_connection_do_io(c, mask);
3648         }
3649         if (r == 0 && c->mask)
3650         {
3651             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_TIMEOUT);
3652             /* timeout and this connection was waiting */
3653             set_ZOOM_error(c, ZOOM_ERROR_TIMEOUT, 0);
3654             do_close (c);
3655             yaz_log (log_level, "timeout");
3656             ZOOM_connection_put_event(c, event);
3657         }
3658     }
3659 #endif
3660     for (i = 0; i<no; i++)
3661     {
3662         ZOOM_connection c = cs[i];
3663         ZOOM_Event event;
3664         if (c && (event = ZOOM_connection_get_event(c)))
3665         {
3666             ZOOM_Event_destroy (event);
3667             return i+1;
3668         }
3669     }
3670     return 0;
3671 }