src/zoom-c.c

   1 /*
   2  * Copyright (c) 2000-2004, Index Data
   3  * See the file LICENSE for details.
   4  *
   5  * $Id: zoom-c.c,v 1.27 2004-04-28 22:44:59 adam Exp $
   6  *
   7  * ZOOM layer for C, connections, result sets, queries.
   8  */
   9 #include <assert.h>
  10 #include <string.h>
  11 #include "zoom-p.h"
  12
  13 #include <yaz/yaz-util.h>
  14 #include <yaz/xmalloc.h>
  15 #include <yaz/otherinfo.h>
  16 #include <yaz/log.h>
  17 #include <yaz/pquery.h>
  18 #include <yaz/marcdisp.h>
  19 #include <yaz/diagbib1.h>
  20 #include <yaz/charneg.h>
  21 #include <yaz/ill.h>
  22 #include <yaz/srw.h>
  23
  24 #if HAVE_SYS_POLL_H
  25 #include <sys/poll.h>
  26 #endif
  27
  28 typedef enum {
  29     zoom_pending,
  30     zoom_complete
  31 } zoom_ret;
  32
  33 static zoom_ret ZOOM_connection_send_init (ZOOM_connection c);
  34 static zoom_ret do_write_ex (ZOOM_connection c, char *buf_out, int len_out);
  35
  36 static ZOOM_Event ZOOM_Event_create (int kind)
  37 {
  38     ZOOM_Event event = (ZOOM_Event) xmalloc (sizeof(*event));
  39     event->kind = kind;
  40     event->next = 0;
  41     event->prev = 0;
  42     return event;
  43 }
  44
  45 static void ZOOM_Event_destroy (ZOOM_Event event)
  46 {
  47     xfree (event);
  48 }
  49
  50 static void ZOOM_connection_put_event (ZOOM_connection c, ZOOM_Event event)
  51 {
  52     if (c->m_queue_back)
  53     {
  54         c->m_queue_back->prev = event;
  55         assert (c->m_queue_front);
  56     }
  57     else
  58     {
  59         assert (!c->m_queue_front);
  60         c->m_queue_front = event;
  61     }
  62     event->next = c->m_queue_back;
  63     event->prev = 0;
  64     c->m_queue_back = event;
  65 }
  66
  67 static ZOOM_Event ZOOM_connection_get_event(ZOOM_connection c)
  68 {
  69     ZOOM_Event event = c->m_queue_front;
  70     if (!event)
  71     {
  72         c->last_event = ZOOM_EVENT_NONE;
  73         return 0;
  74     }
  75     assert (c->m_queue_back);
  76     c->m_queue_front = event->prev;
  77     if (c->m_queue_front)
  78     {
  79         assert (c->m_queue_back);
  80         c->m_queue_front->next = 0;
  81     }
  82     else
  83         c->m_queue_back = 0;
  84     c->last_event = event->kind;
  85     return event;
  86 }
  87
  88
  89 static void set_dset_error (ZOOM_connection c, int error,
  90                             const char *dset,
  91                             const char *addinfo, const char *addinfo2)
  92 {
  93     char *cp;
  94     xfree (c->addinfo);
  95     c->addinfo = 0;
  96     c->error = error;
  97     if (!c->diagset || strcmp(dset, c->diagset))
  98     {
  99         xfree(c->diagset);
 100         c->diagset = xstrdup(dset);
 101         /* remove integer part from SRW diagset .. */
 102         if ((cp = strrchr(c->diagset, '/')))
 103            *cp = '\0';
 104     }
 105     if (addinfo && addinfo2)
 106     {
 107         c->addinfo = xmalloc(strlen(addinfo) + strlen(addinfo2) + 2);
 108         strcpy(c->addinfo, addinfo);
 109         strcat(c->addinfo, addinfo2);
 110     }
 111     else if (addinfo)
 112         c->addinfo = xstrdup(addinfo);
 113     if (error)
 114         yaz_log(LOG_DEBUG, "Error %s %s:%d %s %s",
 115                 c->host_port ? c->host_port : "<>", dset, error,
 116                 addinfo ? addinfo : "",
 117                 addinfo2 ? addinfo2 : "");
 118 }
 119
 120 #if HAVE_XML2
 121 static void set_HTTP_error (ZOOM_connection c, int error,
 122                             const char *addinfo, const char *addinfo2)
 123 {
 124     set_dset_error(c, error, "HTTP", addinfo, addinfo2);
 125 }
 126 #endif
 127
 128 static void set_ZOOM_error (ZOOM_connection c, int error,
 129                             const char *addinfo)
 130 {
 131     set_dset_error(c, error, "ZOOM", addinfo, 0);
 132 }
 133
 134 static void clear_error (ZOOM_connection c)
 135 {
 136
 137     switch (c->error)
 138     {
 139     case ZOOM_ERROR_CONNECT:
 140     case ZOOM_ERROR_MEMORY:
 141     case ZOOM_ERROR_DECODE:
 142     case ZOOM_ERROR_CONNECTION_LOST:
 143     case ZOOM_ERROR_INIT:
 144     case ZOOM_ERROR_INTERNAL:
 145     case ZOOM_ERROR_UNSUPPORTED_PROTOCOL:
 146         break;
 147     default:
 148         set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 149     }
 150 }
 151
 152 ZOOM_task ZOOM_connection_add_task (ZOOM_connection c, int which)
 153 {
 154     ZOOM_task *taskp = &c->tasks;
 155     while (*taskp)
 156         taskp = &(*taskp)->next;
 157     *taskp = (ZOOM_task) xmalloc (sizeof(**taskp));
 158     (*taskp)->running = 0;
 159     (*taskp)->which = which;
 160     (*taskp)->next = 0;
 161     clear_error (c);
 162     return *taskp;
 163 }
 164
 165 ZOOM_task ZOOM_connection_insert_task (ZOOM_connection c, int which)
 166 {
 167     ZOOM_task task = (ZOOM_task) xmalloc (sizeof(*task));
 168
 169     task->next = c->tasks;
 170     c->tasks = task;
 171
 172     task->running = 0;
 173     task->which = which;
 174     clear_error (c);
 175     return task;
 176 }
 177
 178 void ZOOM_connection_remove_task (ZOOM_connection c)
 179 {
 180     ZOOM_task task = c->tasks;
 181
 182     if (task)
 183     {
 184         c->tasks = task->next;
 185         switch (task->which)
 186         {
 187         case ZOOM_TASK_SEARCH:
 188             ZOOM_resultset_destroy (task->u.search.resultset);
 189             break;
 190         case ZOOM_TASK_RETRIEVE:
 191             ZOOM_resultset_destroy (task->u.retrieve.resultset);
 192             break;
 193         case ZOOM_TASK_CONNECT:
 194             break;
 195         case ZOOM_TASK_SCAN:
 196             ZOOM_scanset_destroy (task->u.scan.scan);
 197             break;
 198         case ZOOM_TASK_PACKAGE:
 199             ZOOM_package_destroy (task->u.package);
 200             break;
 201         case ZOOM_TASK_SORT:
 202             ZOOM_resultset_destroy (task->u.sort.resultset);
 203             ZOOM_query_destroy(task->u.sort.q);
 204             break;
 205         default:
 206             assert (0);
 207         }
 208         xfree (task);
 209     }
 210 }
 211
 212 static int ZOOM_connection_exec_task (ZOOM_connection c);
 213
 214 void ZOOM_connection_remove_tasks (ZOOM_connection c)
 215 {
 216     while (c->tasks)
 217         ZOOM_connection_remove_task(c);
 218 }
 219
 220 static ZOOM_record record_cache_lookup (ZOOM_resultset r, int pos);
 221
 222 ZOOM_API(ZOOM_connection)
 223 ZOOM_connection_create (ZOOM_options options)
 224 {
 225     ZOOM_connection c = (ZOOM_connection) xmalloc (sizeof(*c));
 226
 227     c->proto = PROTO_Z3950;
 228     c->cs = 0;
 229     c->mask = 0;
 230     c->reconnect_ok = 0;
 231     c->state = STATE_IDLE;
 232     c->addinfo = 0;
 233     c->diagset = 0;
 234     set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 235     c->buf_in = 0;
 236     c->len_in = 0;
 237     c->buf_out = 0;
 238     c->len_out = 0;
 239     c->resultsets = 0;
 240
 241     c->options = ZOOM_options_create_with_parent(options);
 242
 243     c->host_port = 0;
 244     c->path = 0;
 245     c->proxy = 0;
 246
 247     c->charset = c->lang = 0;
 248
 249     c->cookie_out = 0;
 250     c->cookie_in = 0;
 251     c->client_IP = 0;
 252     c->tasks = 0;
 253
 254     c->odr_in = odr_createmem (ODR_DECODE);
 255     c->odr_out = odr_createmem (ODR_ENCODE);
 256
 257     c->async = 0;
 258     c->support_named_resultsets = 0;
 259     c->last_event = ZOOM_EVENT_NONE;
 260
 261     c->m_queue_front = 0;
 262     c->m_queue_back = 0;
 263     return c;
 264 }
 265
 266 /* set database names. Take local databases (if set); otherwise
 267    take databases given in ZURL (if set); otherwise use Default */
 268 static char **set_DatabaseNames (ZOOM_connection con, ZOOM_options options,
 269                                  int *num)
 270 {
 271     char **databaseNames;
 272     const char *c;
 273     int no = 2;
 274     const char *cp = ZOOM_options_get (options, "databaseName");
 275
 276     if (!cp || !*cp)
 277     {
 278         if (strncmp (con->host_port, "unix:", 5) == 0)
 279             cp = strchr (con->host_port+5, ':');
 280         else
 281             cp = strchr (con->host_port, '/');
 282         if (cp)
 283             cp++;
 284     }
 285     if (cp)
 286     {
 287         c = cp;
 288         while ((c = strchr(c, '+')))
 289         {
 290             c++;
 291             no++;
 292         }
 293     }
 294     else
 295         cp = "Default";
 296     databaseNames = (char**)
 297         odr_malloc (con->odr_out, no * sizeof(*databaseNames));
 298     no = 0;
 299     while (*cp)
 300     {
 301         c = strchr (cp, '+');
 302         if (!c)
 303             c = cp + strlen(cp);
 304         else if (c == cp)
 305         {
 306             cp++;
 307             continue;
 308         }
 309         /* cp ptr to first char of db name, c is char
 310            following db name */
 311         databaseNames[no] = (char*) odr_malloc (con->odr_out, 1+c-cp);
 312         memcpy (databaseNames[no], cp, c-cp);
 313         databaseNames[no++][c-cp] = '\0';
 314         cp = c;
 315         if (*cp)
 316             cp++;
 317     }
 318     databaseNames[no] = NULL;
 319     *num = no;
 320     return databaseNames;
 321 }
 322
 323 ZOOM_API(ZOOM_connection)
 324 ZOOM_connection_new (const char *host, int portnum)
 325 {
 326     ZOOM_connection c = ZOOM_connection_create (0);
 327
 328     ZOOM_connection_connect (c, host, portnum);
 329     return c;
 330 }
 331
 332 ZOOM_API(void)
 333 ZOOM_connection_connect(ZOOM_connection c,
 334                         const char *host, int portnum)
 335 {
 336     const char *val;
 337     ZOOM_task task;
 338
 339     if (c->cs)
 340     {
 341         yaz_log (LOG_DEBUG, "reconnect");
 342         c->reconnect_ok = 1;
 343         return;
 344     }
 345     yaz_log(LOG_DEBUG, "connect");
 346     xfree (c->proxy);
 347     val = ZOOM_options_get (c->options, "proxy");
 348     if (val && *val)
 349         c->proxy = xstrdup (val);
 350     else
 351         c->proxy = 0;
 352
 353     xfree (c->charset);
 354     val = ZOOM_options_get (c->options, "charset");
 355     if (val && *val)
 356         c->charset = xstrdup (val);
 357     else
 358         c->charset = 0;
 359
 360     xfree (c->lang);
 361     val = ZOOM_options_get (c->options, "lang");
 362     if (val && *val)
 363         c->lang = xstrdup (val);
 364     else
 365         c->lang = 0;
 366
 367     xfree (c->host_port);
 368     if (portnum)
 369     {
 370         char hostn[128];
 371         sprintf (hostn, "%.80s:%d", host, portnum);
 372         c->host_port = xstrdup(hostn);
 373     }
 374     else
 375         c->host_port = xstrdup(host);
 376
 377     ZOOM_options_set(c->options, "host", c->host_port);
 378
 379     val = ZOOM_options_get (c->options, "cookie");
 380     if (val && *val)
 381         c->cookie_out = xstrdup (val);
 382
 383     val = ZOOM_options_get (c->options, "clientIP");
 384     if (val && *val)
 385         c->client_IP = xstrdup (val);
 386
 387     c->async = ZOOM_options_get_bool (c->options, "async", 0);
 388
 389     set_ZOOM_error(c, ZOOM_ERROR_NONE, 0);
 390
 391     task = ZOOM_connection_add_task (c, ZOOM_TASK_CONNECT);
 392
 393     if (!c->async)
 394     {
 395         while (ZOOM_event (1, &c))
 396             ;
 397     }
 398 }
 399
 400 ZOOM_API(ZOOM_query)
 401 ZOOM_query_create(void)
 402 {
 403     ZOOM_query s = (ZOOM_query) xmalloc (sizeof(*s));
 404
 405     s->refcount = 1;
 406     s->z_query = 0;
 407     s->sort_spec = 0;
 408     s->odr = odr_createmem (ODR_ENCODE);
 409     s->query_string = 0;
 410
 411     return s;
 412 }
 413
 414 ZOOM_API(void)
 415 ZOOM_query_destroy(ZOOM_query s)
 416 {
 417     if (!s)
 418         return;
 419
 420     (s->refcount)--;
 421     yaz_log (LOG_DEBUG, "ZOOM_query_destroy count=%d", s->refcount);
 422     if (s->refcount == 0)
 423     {
 424         odr_destroy (s->odr);
 425         xfree (s);
 426     }
 427 }
 428
 429 ZOOM_API(int)
 430 ZOOM_query_prefix(ZOOM_query s, const char *str)
 431 {
 432     s->query_string = odr_strdup(s->odr, str);
 433     s->z_query = (Z_Query *) odr_malloc (s->odr, sizeof(*s->z_query));
 434     s->z_query->which = Z_Query_type_1;
 435     s->z_query->u.type_1 =  p_query_rpn(s->odr, PROTO_Z3950, str);
 436     if (!s->z_query->u.type_1)
 437     {
 438         s->z_query = 0;
 439         return -1;
 440     }
 441     return 0;
 442 }
 443
 444 ZOOM_API(int)
 445 ZOOM_query_cql(ZOOM_query s, const char *str)
 446 {
 447     Z_External *ext;
 448
 449     s->query_string = odr_strdup(s->odr, str);
 450
 451     ext = (Z_External *) odr_malloc(s->odr, sizeof(*ext));
 452     ext->direct_reference = odr_getoidbystr(s->odr, "1.2.840.10003.16.2");
 453     ext->indirect_reference = 0;
 454     ext->descriptor = 0;
 455     ext->which = Z_External_CQL;
 456     ext->u.cql = s->query_string;
 457
 458     s->z_query = (Z_Query *) odr_malloc (s->odr, sizeof(*s->z_query));
 459     s->z_query->which = Z_Query_type_104;
 460     s->z_query->u.type_104 =  ext;
 461
 462     return 0;
 463 }
 464
 465 ZOOM_API(int)
 466 ZOOM_query_sortby(ZOOM_query s, const char *criteria)
 467 {
 468     s->sort_spec = yaz_sort_spec (s->odr, criteria);
 469     if (!s->sort_spec)
 470         return -1;
 471     return 0;
 472 }
 473
 474 static zoom_ret do_write(ZOOM_connection c);
 475
 476 ZOOM_API(void)
 477 ZOOM_connection_destroy(ZOOM_connection c)
 478 {
 479     ZOOM_resultset r;
 480     if (!c)
 481         return;
 482     if (c->cs)
 483         cs_close (c->cs);
 484     for (r = c->resultsets; r; r = r->next)
 485         r->connection = 0;
 486
 487     xfree (c->buf_in);
 488     xfree (c->addinfo);
 489     xfree (c->diagset);
 490     odr_destroy (c->odr_in);
 491     odr_destroy (c->odr_out);
 492     ZOOM_options_destroy (c->options);
 493     ZOOM_connection_remove_tasks (c);
 494     xfree (c->host_port);
 495     xfree (c->path);
 496     xfree (c->proxy);
 497     xfree (c->charset);
 498     xfree (c->lang);
 499     xfree (c->cookie_out);
 500     xfree (c->cookie_in);
 501     xfree (c->client_IP);
 502     xfree (c);
 503 }
 504
 505 void ZOOM_resultset_addref (ZOOM_resultset r)
 506 {
 507     if (r)
 508     {
 509         (r->refcount)++;
 510         yaz_log (LOG_DEBUG, "ZOOM_resultset_addref r=%p count=%d",
 511                  r, r->refcount);
 512     }
 513 }
 514
 515 ZOOM_resultset ZOOM_resultset_create ()
 516 {
 517     ZOOM_resultset r = (ZOOM_resultset) xmalloc (sizeof(*r));
 518
 519     yaz_log (LOG_DEBUG, "ZOOM_resultset_create r = %p", r);
 520     r->refcount = 1;
 521     r->size = 0;
 522     r->odr = odr_createmem (ODR_ENCODE);
 523     r->start = 0;
 524     r->piggyback = 1;
 525     r->setname = 0;
 526     r->schema = 0;
 527     r->count = 0;
 528     r->step = 0;
 529     r->record_cache = 0;
 530     r->r_sort_spec = 0;
 531     r->query = 0;
 532     r->connection = 0;
 533     r->next = 0;
 534     return r;
 535 }
 536
 537 ZOOM_API(ZOOM_resultset)
 538 ZOOM_connection_search_pqf(ZOOM_connection c, const char *q)
 539 {
 540     ZOOM_resultset r;
 541     ZOOM_query s = ZOOM_query_create();
 542
 543     ZOOM_query_prefix (s, q);
 544
 545     r = ZOOM_connection_search (c, s);
 546     ZOOM_query_destroy (s);
 547     return r;
 548 }
 549
 550 ZOOM_API(ZOOM_resultset)
 551 ZOOM_connection_search(ZOOM_connection c, ZOOM_query q)
 552 {
 553     ZOOM_resultset r = ZOOM_resultset_create ();
 554     ZOOM_task task;
 555     const char *cp;
 556
 557     r->r_sort_spec = q->sort_spec;
 558     r->query = q;
 559
 560     r->options = ZOOM_options_create_with_parent(c->options);
 561
 562     r->start = ZOOM_options_get_int(r->options, "start", 0);
 563     r->count = ZOOM_options_get_int(r->options, "count", 0);
 564     {
 565         /* If "presentChunk" is defined use that; otherwise "step" */
 566         const char *cp = ZOOM_options_get (r->options, "presentChunk");
 567         r->step = ZOOM_options_get_int(r->options,
 568                                        (cp != 0 ? "presentChunk": "step"), 0);
 569     }
 570     r->piggyback = ZOOM_options_get_bool (r->options, "piggyback", 1);
 571     cp = ZOOM_options_get (r->options, "setname");
 572     if (cp)
 573         r->setname = xstrdup(cp);
 574     cp = ZOOM_options_get (r->options, "schema");
 575     if (cp)
 576         r->schema = xstrdup(cp);
 577
 578     r->connection = c;
 579
 580     r->next = c->resultsets;
 581     c->resultsets = r;
 582
 583     if (c->host_port && c->proto == PROTO_HTTP)
 584     {
 585         if (!c->cs)
 586         {
 587             yaz_log(LOG_DEBUG, "NO COMSTACK");
 588             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 589         }
 590         else
 591         {
 592             yaz_log(LOG_DEBUG, "PREPARE FOR RECONNECT");
 593             c->reconnect_ok = 1;
 594         }
 595     }
 596
 597     task = ZOOM_connection_add_task (c, ZOOM_TASK_SEARCH);
 598     task->u.search.resultset = r;
 599     ZOOM_resultset_addref (r);
 600
 601     (q->refcount)++;
 602
 603     if (!c->async)
 604     {
 605         while (ZOOM_event (1, &c))
 606             ;
 607     }
 608     return r;
 609 }
 610
 611 ZOOM_API(void)
 612     ZOOM_resultset_sort(ZOOM_resultset r,
 613                         const char *sort_type, const char *sort_spec)
 614 {
 615     ZOOM_connection c = r->connection;
 616     ZOOM_task task;
 617
 618     if (!c)
 619         return;
 620
 621     if (c->host_port && c->proto == PROTO_HTTP)
 622     {
 623         if (!c->cs)
 624         {
 625             yaz_log(LOG_DEBUG, "NO COMSTACK");
 626             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 627         }
 628         else
 629         {
 630             yaz_log(LOG_DEBUG, "PREPARE FOR RECONNECT");
 631             c->reconnect_ok = 1;
 632         }
 633     }
 634
 635     ZOOM_resultset_cache_reset(r);
 636     task = ZOOM_connection_add_task (c, ZOOM_TASK_SORT);
 637     task->u.sort.resultset = r;
 638     task->u.sort.q = ZOOM_query_create();
 639     ZOOM_query_sortby(task->u.sort.q, sort_spec);
 640
 641     ZOOM_resultset_addref (r);
 642
 643     if (!c->async)
 644     {
 645         while (ZOOM_event (1, &c))
 646             ;
 647     }
 648 }
 649
 650 ZOOM_API(void)
 651     ZOOM_resultset_cache_reset(ZOOM_resultset r)
 652 {
 653     ZOOM_record_cache rc;
 654
 655     for (rc = r->record_cache; rc; rc = rc->next)
 656     {
 657         if (rc->rec.wrbuf_marc)
 658             wrbuf_free (rc->rec.wrbuf_marc, 1);
 659         if (rc->rec.wrbuf_iconv)
 660             wrbuf_free (rc->rec.wrbuf_iconv, 1);
 661         if (rc->rec.wrbuf_opac)
 662             wrbuf_free (rc->rec.wrbuf_opac, 1);
 663     }
 664     r->record_cache = 0;
 665 }
 666
 667 ZOOM_API(void)
 668 ZOOM_resultset_destroy(ZOOM_resultset r)
 669 {
 670     if (!r)
 671         return;
 672     (r->refcount)--;
 673     yaz_log (LOG_DEBUG, "ZOOM_resultset_destroy r = %p count=%d",
 674              r, r->refcount);
 675     if (r->refcount == 0)
 676     {
 677         ZOOM_resultset_cache_reset(r);
 678
 679         if (r->connection)
 680         {
 681             /* remove ourselves from the resultsets in connection */
 682             ZOOM_resultset *rp = &r->connection->resultsets;
 683             while (1)
 684             {
 685                 assert (*rp);   /* we must be in this list!! */
 686                 if (*rp == r)
 687                 {   /* OK, we're here - take us out of it */
 688                     *rp = (*rp)->next;
 689                     break;
 690                 }
 691                 rp = &(*rp)->next;
 692             }
 693         }
 694         ZOOM_query_destroy (r->query);
 695         ZOOM_options_destroy (r->options);
 696         odr_destroy (r->odr);
 697         xfree (r->setname);
 698         xfree (r->schema);
 699         xfree (r);
 700     }
 701 }
 702
 703 ZOOM_API(size_t)
 704 ZOOM_resultset_size (ZOOM_resultset r)
 705 {
 706     return r->size;
 707 }
 708
 709 static void do_close (ZOOM_connection c)
 710 {
 711     if (c->cs)
 712         cs_close(c->cs);
 713     c->cs = 0;
 714     c->mask = 0;
 715     c->state = STATE_IDLE;
 716 }
 717
 718 static void ZOOM_resultset_retrieve (ZOOM_resultset r,
 719                                      int force_sync, int start, int count)
 720 {
 721     ZOOM_task task;
 722     ZOOM_connection c;
 723     const char *cp;
 724
 725     if (!r)
 726         return;
 727     c = r->connection;
 728     if (!c)
 729         return;
 730
 731     if (c->host_port && c->proto == PROTO_HTTP)
 732     {
 733         if (!c->cs)
 734         {
 735             yaz_log(LOG_DEBUG, "NO COMSTACK");
 736             ZOOM_connection_add_task(c, ZOOM_TASK_CONNECT);
 737         }
 738         else
 739         {
 740             yaz_log(LOG_DEBUG, "PREPARE FOR RECONNECT");
 741             c->reconnect_ok = 1;
 742         }
 743     }
 744     task = ZOOM_connection_add_task (c, ZOOM_TASK_RETRIEVE);
 745     task->u.retrieve.resultset = r;
 746     task->u.retrieve.start = start;
 747     task->u.retrieve.count = count;
 748
 749     cp = ZOOM_options_get (r->options, "schema");
 750     if (cp)
 751     {
 752         if (!r->schema || strcmp(r->schema, cp))
 753         {
 754             xfree(r->schema);
 755             r->schema = xstrdup(cp);
 756         }
 757     }
 758
 759     ZOOM_resultset_addref (r);
 760
 761     if (!r->connection->async || force_sync)
 762         while (r->connection && ZOOM_event (1, &r->connection))
 763             ;
 764 }
 765
 766 ZOOM_API(void)
 767 ZOOM_resultset_records (ZOOM_resultset r, ZOOM_record *recs,
 768                         size_t start, size_t count)
 769 {
 770     int force_present = 0;
 771
 772     if (!r)
 773         return ;
 774     if (count && recs)
 775         force_present = 1;
 776     ZOOM_resultset_retrieve (r, force_present, start, count);
 777     if (force_present)
 778     {
 779         size_t i;
 780         for (i = 0; i< count; i++)
 781             recs[i] = ZOOM_resultset_record_immediate (r, i+start);
 782     }
 783 }
 784
 785 static void get_cert(ZOOM_connection c)
 786 {
 787     char *cert_buf;
 788     int cert_len;
 789
 790     if (cs_get_peer_certificate_x509(c->cs, &cert_buf, &cert_len))
 791     {
 792         ZOOM_connection_option_setl(c, "sslPeerCert",
 793                                     cert_buf, cert_len);
 794         xfree(cert_buf);
 795     }
 796 }
 797
 798 static zoom_ret do_connect (ZOOM_connection c)
 799 {
 800     void *add;
 801     const char *effective_host;
 802
 803     if (c->proxy)
 804         effective_host = c->proxy;
 805     else
 806         effective_host = c->host_port;
 807
 808     yaz_log (LOG_DEBUG, "do_connect host=%s", effective_host);
 809
 810     assert (!c->cs);
 811     c->cs = cs_create_host (effective_host, 0, &add);
 812
 813     if (c->cs && c->cs->protocol == PROTO_HTTP)
 814     {
 815 #if HAVE_XML2
 816         const char *path = 0;
 817
 818         c->proto = PROTO_HTTP;
 819         cs_get_host_args(c->host_port, &path);
 820         xfree(c->path);
 821         c->path = xmalloc(strlen(path)+2);
 822         c->path[0] = '/';
 823         strcpy (c->path+1, path);
 824 #else
 825         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_PROTOCOL, "SRW");
 826         do_close(c);
 827         return zoom_complete;
 828 #endif
 829     }
 830     if (c->cs)
 831     {
 832         int ret = cs_connect (c->cs, add);
 833         if (ret == 0)
 834         {
 835             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_CONNECT);
 836             ZOOM_connection_put_event(c, event);
 837             get_cert(c);
 838             if (c->proto == PROTO_Z3950)
 839                 ZOOM_connection_send_init(c);
 840             else
 841             {
 842                 /* no init request for SRW .. */
 843                 assert (c->tasks->which == ZOOM_TASK_CONNECT);
 844                 ZOOM_connection_remove_task (c);
 845                 c->mask = 0;
 846                 ZOOM_connection_exec_task (c);
 847             }
 848             c->state = STATE_ESTABLISHED;
 849             return zoom_pending;
 850         }
 851         else if (ret > 0)
 852         {
 853             c->state = STATE_CONNECTING;
 854             c->mask = ZOOM_SELECT_EXCEPT;
 855             if (c->cs->io_pending & CS_WANT_WRITE)
 856                 c->mask += ZOOM_SELECT_WRITE;
 857             if (c->cs->io_pending & CS_WANT_READ)
 858                 c->mask += ZOOM_SELECT_READ;
 859             return zoom_pending;
 860         }
 861     }
 862     c->state = STATE_IDLE;
 863     set_ZOOM_error(c, ZOOM_ERROR_CONNECT, effective_host);
 864     return zoom_complete;
 865 }
 866
 867 int z3950_connection_socket(ZOOM_connection c)
 868 {
 869     if (c->cs)
 870         return cs_fileno(c->cs);
 871     return -1;
 872 }
 873
 874 int z3950_connection_mask(ZOOM_connection c)
 875 {
 876     if (c->cs)
 877         return c->mask;
 878     return 0;
 879 }
 880
 881 static void otherInfo_attach (ZOOM_connection c, Z_APDU *a, ODR out)
 882 {
 883     int i;
 884     for (i = 0; i<200; i++)
 885     {
 886         size_t len;
 887         Z_OtherInformation **oi;
 888         char buf[80];
 889         const char *val;
 890         const char *cp;
 891         int oidval;
 892
 893         sprintf (buf, "otherInfo%d", i);
 894         val = ZOOM_options_get (c->options, buf);
 895         if (!val)
 896             break;
 897         cp = strchr (val, ':');
 898         if (!cp)
 899             continue;
 900         len = cp - val;
 901         if (len >= sizeof(buf))
 902             len = sizeof(buf)-1;
 903         memcpy (buf, val, len);
 904         buf[len] = '\0';
 905         oidval = oid_getvalbyname (buf);
 906         if (oidval == VAL_NONE)
 907             continue;
 908
 909         yaz_oi_APDU(a, &oi);
 910         yaz_oi_set_string_oidval(oi, out, oidval, 1, cp+1);
 911     }
 912 }
 913
 914 static int encode_APDU(ZOOM_connection c, Z_APDU *a, ODR out)
 915 {
 916     assert (a);
 917     if (c->cookie_out)
 918     {
 919         Z_OtherInformation **oi;
 920         yaz_oi_APDU(a, &oi);
 921         yaz_oi_set_string_oidval(oi, out, VAL_COOKIE, 1, c->cookie_out);
 922     }
 923     if (c->client_IP)
 924     {
 925         Z_OtherInformation **oi;
 926         yaz_oi_APDU(a, &oi);
 927         yaz_oi_set_string_oidval(oi, out, VAL_CLIENT_IP, 1, c->client_IP);
 928     }
 929     otherInfo_attach (c, a, out);
 930     if (!z_APDU(out, &a, 0, 0))
 931     {
 932         FILE *outf = fopen("/tmp/apdu.txt", "a");
 933         if (a && outf)
 934         {
 935             ODR odr_pr = odr_createmem(ODR_PRINT);
 936             fprintf (outf, "a=%p\n", a);
 937             odr_setprint(odr_pr, outf);
 938             z_APDU(odr_pr, &a, 0, 0);
 939             odr_destroy(odr_pr);
 940         }
 941         yaz_log (LOG_DEBUG, "encoding failed");
 942         set_ZOOM_error(c, ZOOM_ERROR_ENCODE, 0);
 943         odr_reset(out);
 944         return -1;
 945     }
 946
 947     return 0;
 948 }
 949
 950 static zoom_ret send_APDU (ZOOM_connection c, Z_APDU *a)
 951 {
 952     ZOOM_Event event;
 953     assert (a);
 954     if (encode_APDU(c, a, c->odr_out))
 955         return zoom_complete;
 956     yaz_log(LOG_DEBUG, "send APDU type=%d", a->which);
 957     c->buf_out = odr_getbuf(c->odr_out, &c->len_out, 0);
 958     event = ZOOM_Event_create (ZOOM_EVENT_SEND_APDU);
 959     ZOOM_connection_put_event (c, event);
 960     odr_reset(c->odr_out);
 961     return do_write (c);
 962 }
 963
 964 /* returns 1 if PDU was sent OK (still pending )
 965            0 if PDU was not sent OK (nothing to wait for)
 966 */
 967
 968 static zoom_ret ZOOM_connection_send_init (ZOOM_connection c)
 969 {
 970     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_initRequest);
 971     Z_InitRequest *ireq = apdu->u.initRequest;
 972     Z_IdAuthentication *auth = (Z_IdAuthentication *)
 973         odr_malloc(c->odr_out, sizeof(*auth));
 974     const char *auth_groupId = ZOOM_options_get (c->options, "group");
 975     const char *auth_userId = ZOOM_options_get (c->options, "user");
 976     const char *auth_password = ZOOM_options_get (c->options, "password");
 977     char *version;
 978
 979     /* support the pass for backwards compatibility */
 980     if (!auth_password)
 981         auth_password = ZOOM_options_get (c->options, "pass");
 982
 983     ODR_MASK_SET(ireq->options, Z_Options_search);
 984     ODR_MASK_SET(ireq->options, Z_Options_present);
 985     ODR_MASK_SET(ireq->options, Z_Options_scan);
 986     ODR_MASK_SET(ireq->options, Z_Options_sort);
 987     ODR_MASK_SET(ireq->options, Z_Options_extendedServices);
 988     ODR_MASK_SET(ireq->options, Z_Options_namedResultSets);
 989
 990     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_1);
 991     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_2);
 992     ODR_MASK_SET(ireq->protocolVersion, Z_ProtocolVersion_3);
 993
 994     /* Index Data's Z39.50 Implementor Id is 81 */
 995     ireq->implementationId = odr_prepend(c->odr_out,
 996         ZOOM_options_get(c->options, "implementationId"),
 997         odr_prepend(c->odr_out, "81", ireq->implementationId));
 998
 999     ireq->implementationName = odr_prepend(c->odr_out,
1000         ZOOM_options_get(c->options, "implementationName"),
1001         odr_prepend(c->odr_out, "ZOOM-C", ireq->implementationName));
1002
1003     version = odr_strdup(c->odr_out, "$Revision: 1.27 $");
1004     if (strlen(version) > 10)   /* check for unexpanded CVS strings */
1005         version[strlen(version)-2] = '\0';
1006     ireq->implementationVersion = odr_prepend(c->odr_out,
1007         ZOOM_options_get(c->options, "implementationVersion"),
1008         odr_prepend(c->odr_out, &version[11], ireq->implementationVersion));
1009
1010     *ireq->maximumRecordSize =
1011         ZOOM_options_get_int (c->options, "maximumRecordSize", 1024*1024);
1012     *ireq->preferredMessageSize =
1013         ZOOM_options_get_int (c->options, "preferredMessageSize", 1024*1024);
1014
1015     if (auth_groupId || auth_password)
1016     {
1017         Z_IdPass *pass = (Z_IdPass *) odr_malloc(c->odr_out, sizeof(*pass));
1018         int i = 0;
1019         pass->groupId = 0;
1020         if (auth_groupId && *auth_groupId)
1021         {
1022             pass->groupId = (char *)
1023                 odr_malloc(c->odr_out, strlen(auth_groupId)+1);
1024             strcpy(pass->groupId, auth_groupId);
1025             i++;
1026         }
1027         pass->userId = 0;
1028         if (auth_userId && *auth_userId)
1029         {
1030             pass->userId = (char *)
1031                 odr_malloc(c->odr_out, strlen(auth_userId)+1);
1032             strcpy(pass->userId, auth_userId);
1033             i++;
1034         }
1035         pass->password = 0;
1036         if (auth_password && *auth_password)
1037         {
1038             pass->password = (char *)
1039                 odr_malloc(c->odr_out, strlen(auth_password)+1);
1040             strcpy(pass->password, auth_password);
1041             i++;
1042         }
1043         if (i)
1044         {
1045             auth->which = Z_IdAuthentication_idPass;
1046             auth->u.idPass = pass;
1047             ireq->idAuthentication = auth;
1048         }
1049     }
1050     else if (auth_userId)
1051     {
1052         auth->which = Z_IdAuthentication_open;
1053         auth->u.open = (char *)
1054             odr_malloc(c->odr_out, strlen(auth_userId)+1);
1055         strcpy(auth->u.open, auth_userId);
1056         ireq->idAuthentication = auth;
1057     }
1058     if (c->proxy)
1059         yaz_oi_set_string_oidval(&ireq->otherInfo, c->odr_out,
1060                                  VAL_PROXY, 1, c->host_port);
1061     if (c->charset||c->lang)
1062     {
1063         Z_OtherInformation **oi;
1064         Z_OtherInformationUnit *oi_unit;
1065
1066         yaz_oi_APDU(apdu, &oi);
1067
1068         if ((oi_unit = yaz_oi_update(oi, c->odr_out, NULL, 0, 0)))
1069         {
1070             ODR_MASK_SET(ireq->options, Z_Options_negotiationModel);
1071
1072             oi_unit->which = Z_OtherInfo_externallyDefinedInfo;
1073             oi_unit->information.externallyDefinedInfo =
1074                 yaz_set_proposal_charneg
1075                 (c->odr_out,
1076                  (const char **)&c->charset, (c->charset) ? 1:0,
1077                  (const char **)&c->lang, (c->lang) ? 1:0, 1);
1078         }
1079     }
1080     assert (apdu);
1081     return send_APDU (c, apdu);
1082 }
1083
1084 #if HAVE_XML2
1085 static zoom_ret send_srw (ZOOM_connection c, Z_SRW_PDU *sr)
1086 {
1087     char ctype[50];
1088     Z_SOAP_Handler h[2] = {
1089         {"http://www.loc.gov/zing/srw/", 0, (Z_SOAP_fun) yaz_srw_codec},
1090         {0, 0, 0}
1091     };
1092     ODR o = odr_createmem(ODR_ENCODE);
1093     int ret;
1094     Z_SOAP *p = odr_malloc(o, sizeof(*p));
1095     Z_GDU *gdu;
1096     ZOOM_Event event;
1097
1098     gdu = z_get_HTTP_Request(c->odr_out);
1099     gdu->u.HTTP_Request->path = c->path;
1100
1101     if (c->host_port)
1102     {
1103         const char *cp0 = strstr(c->host_port, "://");
1104         const char *cp1 = 0;
1105         if (cp0)
1106             cp0 = cp0+3;
1107         else
1108             cp0 = c->host_port;
1109
1110         cp1 = strchr(cp0, '/');
1111         if (!cp1)
1112             cp1 = cp0+strlen(cp0);
1113
1114         if (cp0 && cp1)
1115         {
1116             char *h = odr_malloc(c->odr_out, cp1 - cp0 + 1);
1117             memcpy (h, cp0, cp1 - cp0);
1118             h[cp1-cp0] = '\0';
1119             z_HTTP_header_add(c->odr_out, &gdu->u.HTTP_Request->headers,
1120                               "Host", h);
1121         }
1122     }
1123
1124     strcpy(ctype, "text/xml");
1125     if (c->charset && strlen(c->charset) < 20)
1126     {
1127         strcat(ctype, "; charset=");
1128         strcat(ctype, c->charset);
1129     }
1130     z_HTTP_header_add(c->odr_out, &gdu->u.HTTP_Request->headers,
1131                       "Content-Type", ctype);
1132     z_HTTP_header_add(c->odr_out, &gdu->u.HTTP_Request->headers,
1133                       "SOAPAction", "\"\"");
1134     p->which = Z_SOAP_generic;
1135     p->u.generic = odr_malloc(o, sizeof(*p->u.generic));
1136     p->u.generic->no = 0;
1137     p->u.generic->ns = 0;
1138     p->u.generic->p = sr;
1139     p->ns = "http://schemas.xmlsoap.org/soap/envelope/";
1140
1141     ret = z_soap_codec_enc(o, &p,
1142                            &gdu->u.HTTP_Request->content_buf,
1143                            &gdu->u.HTTP_Request->content_len, h,
1144                            c->charset);
1145
1146     if (!z_GDU(c->odr_out, &gdu, 0, 0))
1147         return zoom_complete;
1148     c->buf_out = odr_getbuf(c->odr_out, &c->len_out, 0);
1149
1150     odr_destroy(o);
1151
1152     event = ZOOM_Event_create (ZOOM_EVENT_SEND_APDU);
1153     ZOOM_connection_put_event (c, event);
1154     odr_reset(c->odr_out);
1155     return do_write (c);
1156 }
1157 #endif
1158
1159 #if HAVE_XML2
1160 static zoom_ret ZOOM_connection_srw_send_search(ZOOM_connection c)
1161 {
1162     int i;
1163     ZOOM_resultset resultset = 0;
1164     Z_SRW_PDU *sr = 0;
1165     const char *recordPacking = 0;
1166
1167     if (c->error)                  /* don't continue on error */
1168         return zoom_complete;
1169     assert (c->tasks);
1170     if (c->tasks->which == ZOOM_TASK_SEARCH)
1171     {
1172         resultset = c->tasks->u.search.resultset;
1173         resultset->setname = xstrdup ("default");
1174         ZOOM_options_set (resultset->options, "setname", resultset->setname);
1175     }
1176     else if(c->tasks->which == ZOOM_TASK_RETRIEVE)
1177     {
1178         resultset = c->tasks->u.retrieve.resultset;
1179
1180         resultset->start = c->tasks->u.retrieve.start;
1181         resultset->count = c->tasks->u.retrieve.count;
1182
1183         if (resultset->start >= resultset->size)
1184             return zoom_complete;
1185         if (resultset->start + resultset->count > resultset->size)
1186             resultset->count = resultset->size - resultset->start;
1187
1188         for (i = 0; i<resultset->count; i++)
1189         {
1190             ZOOM_record rec =
1191                 record_cache_lookup (resultset, i + resultset->start);
1192             if (!rec)
1193                 break;
1194         }
1195         if (i == resultset->count)
1196             return zoom_complete;
1197     }
1198     assert(resultset->query);
1199
1200     sr = yaz_srw_get(c->odr_out, Z_SRW_searchRetrieve_request);
1201
1202     if (resultset->query->z_query->which == Z_Query_type_104
1203         && resultset->query->z_query->u.type_104->which == Z_External_CQL)
1204     {
1205
1206         sr->u.request->query_type = Z_SRW_query_type_cql;
1207         sr->u.request->query.cql =resultset->query->z_query->u.type_104->u.cql;
1208     }
1209     else if (resultset->query->z_query->which == Z_Query_type_1 &&
1210              resultset->query->z_query->u.type_1)
1211     {
1212         sr->u.request->query_type = Z_SRW_query_type_pqf;
1213         sr->u.request->query.pqf = resultset->query->query_string;
1214     }
1215     else
1216     {
1217         set_ZOOM_error(c, ZOOM_ERROR_UNSUPPORTED_QUERY, 0);
1218         return zoom_complete;
1219     }
1220     sr->u.request->startRecord = odr_intdup (c->odr_out, resultset->start + 1);
1221     sr->u.request->maximumRecords = odr_intdup (
1222         c->odr_out, resultset->step>0 ? resultset->step : resultset->count);
1223     sr->u.request->recordSchema = resultset->schema;
1224
1225     recordPacking = ZOOM_resultset_option_get (resultset, "recordPacking");
1226
1227     if (recordPacking)
1228         sr->u.request->recordPacking = odr_strdup(c->odr_out, recordPacking);
1229
1230     return send_srw(c, sr);
1231 }
1232 #else
1233 static zoom_ret ZOOM_connection_srw_send_search(ZOOM_connection c)
1234 {
1235     return zoom_complete;
1236 }
1237 #endif
1238
1239 static zoom_ret ZOOM_connection_send_search (ZOOM_connection c)
1240 {
1241     ZOOM_resultset r;
1242     int lslb, ssub, mspn;
1243     const char *syntax;
1244     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_searchRequest);
1245     Z_SearchRequest *search_req = apdu->u.searchRequest;
1246     const char *elementSetName;
1247     const char *smallSetElementSetName;
1248     const char *mediumSetElementSetName;
1249
1250     assert (c->tasks);
1251     assert (c->tasks->which == ZOOM_TASK_SEARCH);
1252
1253     r = c->tasks->u.search.resultset;
1254
1255     elementSetName =
1256         ZOOM_options_get (r->options, "elementSetName");
1257     smallSetElementSetName  =
1258         ZOOM_options_get (r->options, "smallSetElementSetName");
1259     mediumSetElementSetName =
1260         ZOOM_options_get (r->options, "mediumSetElementSetName");
1261
1262     if (!smallSetElementSetName)
1263         smallSetElementSetName = elementSetName;
1264
1265     if (!mediumSetElementSetName)
1266         mediumSetElementSetName = elementSetName;
1267
1268     assert (r);
1269     assert (r->query);
1270
1271     /* prepare query for the search request */
1272     search_req->query = r->query->z_query;
1273     if (!search_req->query)
1274     {
1275         set_ZOOM_error(c, ZOOM_ERROR_INVALID_QUERY, 0);
1276         return zoom_complete;
1277     }
1278
1279     search_req->databaseNames =
1280         set_DatabaseNames (c, r->options, &search_req->num_databaseNames);
1281
1282     /* get syntax (no need to provide unless piggyback is in effect) */
1283     syntax = ZOOM_options_get (r->options, "preferredRecordSyntax");
1284
1285     lslb = ZOOM_options_get_int (r->options, "largeSetLowerBound", -1);
1286     ssub = ZOOM_options_get_int (r->options, "smallSetUpperBound", -1);
1287     mspn = ZOOM_options_get_int (r->options, "mediumSetPresentNumber", -1);
1288     if (lslb != -1 && ssub != -1 && mspn != -1)
1289     {
1290         /* So're a Z39.50 expert? Let's hope you don't do sort */
1291         *search_req->largeSetLowerBound = lslb;
1292         *search_req->smallSetUpperBound = ssub;
1293         *search_req->mediumSetPresentNumber = mspn;
1294     }
1295     else if (r->start == 0 && r->count > 0
1296              && r->piggyback && !r->r_sort_spec && !r->schema)
1297     {
1298         /* Regular piggyback - do it unless we're going to do sort */
1299         *search_req->largeSetLowerBound = 2000000000;
1300         *search_req->smallSetUpperBound = 1;
1301         *search_req->mediumSetPresentNumber = r->step>0 ? r->step : r->count;
1302     }
1303     else
1304     {
1305         /* non-piggyback. Need not provide elementsets or syntaxes .. */
1306         smallSetElementSetName = 0;
1307         mediumSetElementSetName = 0;
1308         syntax = 0;
1309     }
1310     if (smallSetElementSetName && *smallSetElementSetName)
1311     {
1312         Z_ElementSetNames *esn = (Z_ElementSetNames *)
1313             odr_malloc (c->odr_out, sizeof(*esn));
1314
1315         esn->which = Z_ElementSetNames_generic;
1316         esn->u.generic = odr_strdup (c->odr_out, smallSetElementSetName);
1317         search_req->smallSetElementSetNames = esn;
1318     }
1319     if (mediumSetElementSetName && *mediumSetElementSetName)
1320     {
1321         Z_ElementSetNames *esn = (Z_ElementSetNames *)
1322             odr_malloc (c->odr_out, sizeof(*esn));
1323
1324         esn->which = Z_ElementSetNames_generic;
1325         esn->u.generic = odr_strdup (c->odr_out, mediumSetElementSetName);
1326         search_req->mediumSetElementSetNames = esn;
1327     }
1328     if (syntax)
1329         search_req->preferredRecordSyntax =
1330             yaz_str_to_z3950oid (c->odr_out, CLASS_RECSYN, syntax);
1331
1332     if (!r->setname)
1333     {
1334         if (c->support_named_resultsets)
1335         {
1336             char setname[14];
1337             int ord;
1338             /* find the lowest unused ordinal so that we re-use
1339                result sets on the server. */
1340             for (ord = 1; ; ord++)
1341             {
1342                 ZOOM_resultset rp;
1343                 sprintf (setname, "%d", ord);
1344                 for (rp = c->resultsets; rp; rp = rp->next)
1345                     if (rp->setname && !strcmp (rp->setname, setname))
1346                         break;
1347                 if (!rp)
1348                     break;
1349             }
1350             r->setname = xstrdup (setname);
1351             yaz_log (LOG_DEBUG, "allocating set %s", r->setname);
1352         }
1353         else
1354             r->setname = xstrdup ("default");
1355         ZOOM_options_set (r->options, "setname", r->setname);
1356     }
1357     search_req->resultSetName = odr_strdup(c->odr_out, r->setname);
1358     /* send search request */
1359     return send_APDU (c, apdu);
1360 }
1361
1362 static void response_diag (ZOOM_connection c, Z_DiagRec *p)
1363 {
1364     int oclass;
1365     Z_DefaultDiagFormat *r;
1366     char *addinfo = 0;
1367
1368     xfree (c->addinfo);
1369     c->addinfo = 0;
1370     if (p->which != Z_DiagRec_defaultFormat)
1371     {
1372         set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
1373         return;
1374     }
1375     r = p->u.defaultFormat;
1376     switch (r->which)
1377     {
1378     case Z_DefaultDiagFormat_v2Addinfo:
1379         addinfo = r->u.v2Addinfo;
1380         break;
1381     case Z_DefaultDiagFormat_v3Addinfo:
1382         addinfo = r->u.v3Addinfo;
1383         break;
1384     }
1385     set_dset_error(c, *r->condition,
1386                    yaz_z3950oid_to_str(r->diagnosticSetId, &oclass),
1387                    addinfo, 0);
1388 }
1389
1390 ZOOM_API(ZOOM_record)
1391 ZOOM_record_clone (ZOOM_record srec)
1392 {
1393     char *buf;
1394     int size;
1395     ODR odr_enc;
1396     ZOOM_record nrec;
1397
1398     odr_enc = odr_createmem(ODR_ENCODE);
1399     if (!z_NamePlusRecord (odr_enc, &srec->npr, 0, 0))
1400         return 0;
1401     buf = odr_getbuf (odr_enc, &size, 0);
1402
1403     nrec = (ZOOM_record) xmalloc (sizeof(*nrec));
1404     nrec->odr = odr_createmem(ODR_DECODE);
1405     nrec->wrbuf_marc = 0;
1406     nrec->wrbuf_iconv = 0;
1407     nrec->wrbuf_opac = 0;
1408     odr_setbuf (nrec->odr, buf, size, 0);
1409     z_NamePlusRecord (nrec->odr, &nrec->npr, 0, 0);
1410
1411     odr_destroy (odr_enc);
1412     return nrec;
1413 }
1414
1415 ZOOM_API(ZOOM_record)
1416 ZOOM_resultset_record_immediate (ZOOM_resultset s,size_t pos)
1417 {
1418     return record_cache_lookup (s, pos);
1419 }
1420
1421 ZOOM_API(ZOOM_record)
1422 ZOOM_resultset_record (ZOOM_resultset r, size_t pos)
1423 {
1424     ZOOM_record rec = ZOOM_resultset_record_immediate(r, pos);
1425
1426     if (!rec)
1427     {
1428         ZOOM_resultset_retrieve (r, 1, pos, 1);
1429         rec = ZOOM_resultset_record_immediate (r, pos);
1430     }
1431     return rec;
1432 }
1433
1434 ZOOM_API(void)
1435 ZOOM_record_destroy (ZOOM_record rec)
1436 {
1437     if (!rec)
1438         return;
1439     if (rec->wrbuf_marc)
1440         wrbuf_free (rec->wrbuf_marc, 1);
1441     if (rec->wrbuf_iconv)
1442         wrbuf_free (rec->wrbuf_iconv, 1);
1443     if (rec->wrbuf_opac)
1444         wrbuf_free (rec->wrbuf_opac, 1);
1445     odr_destroy (rec->odr);
1446     xfree (rec);
1447 }
1448
1449 static const char *marc_iconv_return(ZOOM_record rec, int marc_type,
1450                                      int *len,
1451                                      const char *buf, int sz,
1452                                      const char *record_charset)
1453 {
1454     char to[40];
1455     char from[40];
1456     yaz_iconv_t cd = 0;
1457     yaz_marc_t mt = yaz_marc_create();
1458
1459     *from = '\0';
1460     strcpy(to, "UTF-8");
1461     if (record_charset && *record_charset)
1462     {
1463         /* Use "from,to" or just "from" */
1464         const char *cp =strchr(record_charset, ',');
1465         int clen = strlen(record_charset);
1466         if (cp && cp[1])
1467         {
1468             strncpy( to, cp+1, sizeof(to)-1);
1469             to[sizeof(to)-1] = '\0';
1470             clen = cp - record_charset;
1471         }
1472         if (clen > sizeof(from)-1)
1473             clen = sizeof(from)-1;
1474
1475         if (clen)
1476             strncpy(from, record_charset, clen);
1477         from[clen] = '\0';
1478     }
1479
1480     if (*from && *to)
1481     {
1482         cd = yaz_iconv_open(to, from);
1483         yaz_marc_iconv(mt, cd);
1484     }
1485
1486     yaz_marc_xml(mt, marc_type);
1487     if (!rec->wrbuf_marc)
1488         rec->wrbuf_marc = wrbuf_alloc();
1489     wrbuf_rewind (rec->wrbuf_marc);
1490     if (yaz_marc_decode_wrbuf (mt, buf, sz, rec->wrbuf_marc) > 0)
1491     {
1492         yaz_marc_destroy(mt);
1493         if (cd)
1494             yaz_iconv_close(cd);
1495         if (len)
1496             *len = wrbuf_len(rec->wrbuf_marc);
1497         return wrbuf_buf(rec->wrbuf_marc);
1498     }
1499     yaz_marc_destroy(mt);
1500     if (cd)
1501         yaz_iconv_close(cd);
1502     return 0;
1503 }
1504
1505 static const char *record_iconv_return(ZOOM_record rec, int *len,
1506                                        const char *buf, int sz,
1507                                        const char *record_charset)
1508 {
1509     char to[40];
1510     char from[40];
1511     yaz_iconv_t cd = 0;
1512
1513     *from = '\0';
1514     strcpy(to, "UTF-8");
1515     if (record_charset && *record_charset)
1516     {
1517         /* Use "from,to" or just "from" */
1518         const char *cp =strchr(record_charset, ',');
1519         int clen = strlen(record_charset);
1520         if (cp && cp[1])
1521         {
1522             strncpy( to, cp+1, sizeof(to)-1);
1523             to[sizeof(to)-1] = '\0';
1524             clen = cp - record_charset;
1525         }
1526         if (clen > sizeof(from)-1)
1527             clen = sizeof(from)-1;
1528
1529         if (clen)
1530             strncpy(from, record_charset, clen);
1531         from[clen] = '\0';
1532     }
1533
1534     if (*from && *to && (cd = yaz_iconv_open(to, from)))
1535     {
1536         char outbuf[12];
1537         size_t inbytesleft = sz;
1538         const char *inp = buf;
1539
1540         if (!rec->wrbuf_iconv)
1541             rec->wrbuf_iconv = wrbuf_alloc();
1542
1543         wrbuf_rewind(rec->wrbuf_iconv);
1544
1545         while (inbytesleft)
1546         {
1547             size_t outbytesleft = sizeof(outbuf);
1548             char *outp = outbuf;
1549             size_t r = yaz_iconv (cd, (char**) &inp,
1550                                   &inbytesleft,
1551                                   &outp, &outbytesleft);
1552             if (r == (size_t) (-1))
1553             {
1554                 int e = yaz_iconv_error(cd);
1555                 if (e != YAZ_ICONV_E2BIG)
1556                     break;
1557             }
1558             wrbuf_write(rec->wrbuf_iconv, outbuf, outp - outbuf);
1559         }
1560         wrbuf_puts(rec->wrbuf_iconv, "");
1561         buf = wrbuf_buf(rec->wrbuf_iconv);
1562         sz = wrbuf_len(rec->wrbuf_iconv);
1563         yaz_iconv_close(cd);
1564     }
1565     if (len)
1566         *len = sz;
1567     return buf;
1568 }
1569
1570 ZOOM_API(const char *)
1571 ZOOM_record_get (ZOOM_record rec, const char *type_spec, int *len)
1572 {
1573     char type[40];
1574     char charset[40];
1575     char xpath[512];
1576     const char *cp;
1577     int i;
1578     Z_NamePlusRecord *npr;
1579
1580     if (len)
1581         *len = 0; /* default return */
1582
1583     if (!rec)
1584         return 0;
1585     npr = rec->npr;
1586     if (!npr)
1587         return 0;
1588
1589     cp = type_spec;
1590     for (i = 0; cp[i] && i < sizeof(type)-1; i++)
1591     {
1592         if (cp[i] == ';' || cp[i] == ' ')
1593             break;
1594         type[i] = cp[i];
1595     }
1596     type[i] = '\0';
1597     charset[0] = '\0';
1598     while (type_spec[i] == ';')
1599     {
1600         i++;
1601         while (type_spec[i] == ' ')
1602             i++;
1603         if (!strncmp(type_spec+i, "charset=", 8))
1604         {
1605             int j = 0;
1606             i = i + 8; /* skip charset= */
1607             for (j = 0; type_spec[i]  && j < sizeof(charset)-1; i++, j++)
1608             {
1609                 if (type_spec[i] == ';' || type_spec[i] == ' ')
1610                     break;
1611                 charset[j] = cp[i];
1612             }
1613             charset[j] = '\0';
1614         }
1615         else if (!strncmp(type_spec+i, "xpath=", 6))
1616         {
1617             int j = 0;
1618             i = i + 6;
1619             for (j = 0; type_spec[i] && j < sizeof(xpath)-1; i++, j++)
1620                 xpath[j] = cp[i];
1621             xpath[j] = '\0';
1622         }
1623         while (type_spec[i] == ' ')
1624             i++;
1625     }
1626     if (!strcmp (type, "database"))
1627     {
1628         if (len)
1629             *len = (npr->databaseName ? strlen(npr->databaseName) : 0);
1630         return npr->databaseName;
1631     }
1632     else if (!strcmp (type, "syntax"))
1633     {
1634         const char *desc = 0;
1635         if (npr->which == Z_NamePlusRecord_databaseRecord)
1636         {
1637             Z_External *r = (Z_External *) npr->u.databaseRecord;
1638             oident *ent = oid_getentbyoid(r->direct_reference);
1639             if (ent)
1640                 desc = ent->desc;
1641         }
1642         if (!desc)
1643             desc = "none";
1644         if (len)
1645             *len = strlen(desc);
1646         return desc;
1647     }
1648     if (npr->which != Z_NamePlusRecord_databaseRecord)
1649         return 0;
1650
1651     /* from now on - we have a database record .. */
1652     if (!strcmp (type, "render"))
1653     {
1654         Z_External *r = (Z_External *) npr->u.databaseRecord;
1655         oident *ent = oid_getentbyoid(r->direct_reference);
1656
1657         /* render bibliographic record .. */
1658         if (r->which == Z_External_OPAC)
1659         {
1660             r = r->u.opac->bibliographicRecord;
1661             if (!r)
1662                 return 0;
1663             ent = oid_getentbyoid(r->direct_reference);
1664         }
1665         if (r->which == Z_External_sutrs)
1666             return record_iconv_return(rec, len,
1667                                        r->u.sutrs->buf, r->u.sutrs->len,
1668                                        charset);
1669         else if (r->which == Z_External_octet)
1670         {
1671             const char *ret_buf;
1672             switch (ent->value)
1673             {
1674             case VAL_SOIF:
1675             case VAL_HTML:
1676             case VAL_SUTRS:
1677                 break;
1678             case VAL_TEXT_XML:
1679             case VAL_APPLICATION_XML:
1680                 break;
1681             default:
1682                 ret_buf = marc_iconv_return(
1683                     rec, YAZ_MARC_LINE, len,
1684                     (const char *) r->u.octet_aligned->buf,
1685                     r->u.octet_aligned->len,
1686                     charset);
1687                 if (ret_buf)
1688                     return ret_buf;
1689             }
1690             return record_iconv_return(rec, len,
1691                                        (const char *) r->u.octet_aligned->buf,
1692                                        r->u.octet_aligned->len,
1693                                        charset);
1694         }
1695         else if (r->which == Z_External_grs1)
1696         {
1697             if (!rec->wrbuf_marc)
1698                 rec->wrbuf_marc = wrbuf_alloc();
1699             wrbuf_rewind (rec->wrbuf_marc);
1700             yaz_display_grs1(rec->wrbuf_marc, r->u.grs1, 0);
1701             return record_iconv_return(rec, len,
1702                                        wrbuf_buf(rec->wrbuf_marc),
1703                                        wrbuf_len(rec->wrbuf_marc),
1704                                        charset);
1705         }
1706         return 0;
1707     }
1708     else if (!strcmp (type, "xml") || !strcmp(type, "oai"))
1709     {
1710         Z_External *r = (Z_External *) npr->u.databaseRecord;
1711         oident *ent = oid_getentbyoid(r->direct_reference);
1712
1713         /* render bibliographic record .. */
1714         if (r->which == Z_External_OPAC)
1715         {
1716             r = r->u.opac->bibliographicRecord;
1717             if (!r)
1718                 return 0;
1719             ent = oid_getentbyoid(r->direct_reference);
1720         }
1721
1722         if (r->which == Z_External_sutrs)
1723             return record_iconv_return(rec, len,
1724                                        (const char *) r->u.sutrs->buf,
1725                                        r->u.sutrs->len,
1726                                        charset);
1727         else if (r->which == Z_External_octet)
1728         {
1729             const char *ret_buf;
1730             int marc_decode_type = YAZ_MARC_MARCXML;
1731
1732             if (!strcmp(type, "oai"))
1733                 marc_decode_type = YAZ_MARC_OAIMARC;
1734             switch (ent->value)
1735             {
1736             case VAL_SOIF:
1737             case VAL_HTML:
1738             case VAL_SUTRS:
1739                 break;
1740             case VAL_TEXT_XML:
1741             case VAL_APPLICATION_XML:
1742                 break;
1743             default:
1744                 ret_buf = marc_iconv_return(
1745                     rec, marc_decode_type, len,
1746                     (const char *) r->u.octet_aligned->buf,
1747                     r->u.octet_aligned->len,
1748                     charset);
1749                 if (ret_buf)
1750                     return ret_buf;
1751             }
1752             return record_iconv_return(rec, len,
1753                                        (const char *) r->u.octet_aligned->buf,
1754                                        r->u.octet_aligned->len,
1755                                        charset);
1756         }
1757         else if (r->which == Z_External_grs1)
1758         {
1759             if (len) *len = 5;
1760             return "GRS-1";
1761         }
1762         return 0;
1763     }
1764     else if (!strcmp (type, "raw"))
1765     {
1766         Z_External *r = (Z_External *) npr->u.databaseRecord;
1767
1768         if (r->which == Z_External_sutrs)
1769         {
1770             if (len) *len = r->u.sutrs->len;
1771             return (const char *) r->u.sutrs->buf;
1772         }
1773         else if (r->which == Z_External_octet)
1774         {
1775             if (len) *len = r->u.octet_aligned->len;
1776             return (const char *) r->u.octet_aligned->buf;
1777         }
1778         else /* grs-1, explain, OPAC, ... */
1779         {
1780             if (len) *len = -1;
1781             return (const char *) npr->u.databaseRecord;
1782         }
1783         return 0;
1784     }
1785     else if (!strcmp (type, "ext"))
1786     {
1787         if (len) *len = -1;
1788         return (const char *) npr->u.databaseRecord;
1789     }
1790     else if (!strcmp (type, "opac"))
1791
1792     {
1793         Z_External *r = (Z_External *) npr->u.databaseRecord;
1794         if (r->which == Z_External_OPAC)
1795         {
1796             if (!rec->wrbuf_opac)
1797                 rec->wrbuf_opac = wrbuf_alloc();
1798             wrbuf_rewind (rec->wrbuf_opac);
1799             yaz_display_OPAC(rec->wrbuf_opac, r->u.opac, 0);
1800             return record_iconv_return(rec, len,
1801                                        wrbuf_buf(rec->wrbuf_opac),
1802                                        wrbuf_len(rec->wrbuf_opac),
1803                                        charset);
1804         }
1805     }
1806     return 0;
1807 }
1808
1809 static int strcmp_null(const char *v1, const char *v2)
1810 {
1811     if (!v1 && !v2)
1812         return 0;
1813     if (!v1 || !v2)
1814         return -1;
1815     return strcmp(v1, v2);
1816 }
1817
1818 static void record_cache_add (ZOOM_resultset r, Z_NamePlusRecord *npr,
1819                               int pos)
1820 {
1821     ZOOM_record_cache rc;
1822     const char *elementSetName =
1823         ZOOM_resultset_option_get (r, "elementSetName");
1824     const char *syntax =
1825         ZOOM_resultset_option_get (r, "preferredRecordSyntax");
1826
1827     ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_RECV_RECORD);
1828     ZOOM_connection_put_event(r->connection, event);
1829
1830     for (rc = r->record_cache; rc; rc = rc->next)
1831     {
1832         if (pos == rc->pos)
1833         {
1834             if (strcmp_null(r->schema, rc->schema))
1835                 continue;
1836             if (strcmp_null(elementSetName,rc->elementSetName))
1837                 continue;
1838             if (strcmp_null(syntax, rc->syntax))
1839                 continue;
1840             /* not destroying rc->npr (it's handled by nmem )*/
1841             rc->rec.npr = npr;
1842             /* keeping wrbuf_marc too */
1843             return;
1844         }
1845     }
1846     rc = (ZOOM_record_cache) odr_malloc (r->odr, sizeof(*rc));
1847     rc->rec.npr = npr;
1848     rc->rec.odr = 0;
1849     rc->rec.wrbuf_marc = 0;
1850     rc->rec.wrbuf_iconv = 0;
1851     rc->rec.wrbuf_opac = 0;
1852     if (elementSetName)
1853         rc->elementSetName = odr_strdup (r->odr, elementSetName);
1854     else
1855         rc->elementSetName = 0;
1856
1857     if (syntax)
1858         rc->syntax = odr_strdup (r->odr, syntax);
1859     else
1860         rc->syntax = 0;
1861
1862     if (r->schema)
1863         rc->schema = odr_strdup (r->odr, r->schema);
1864     else
1865         rc->schema = 0;
1866
1867     rc->pos = pos;
1868     rc->next = r->record_cache;
1869     r->record_cache = rc;
1870 }
1871
1872 static ZOOM_record record_cache_lookup (ZOOM_resultset r, int pos)
1873 {
1874     ZOOM_record_cache rc;
1875     const char *elementSetName =
1876         ZOOM_resultset_option_get (r, "elementSetName");
1877     const char *syntax =
1878         ZOOM_resultset_option_get (r, "preferredRecordSyntax");
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             return &rc->rec;
1891         }
1892     }
1893     return 0;
1894 }
1895
1896 static void handle_records (ZOOM_connection c, Z_Records *sr,
1897                             int present_phase)
1898 {
1899     ZOOM_resultset resultset;
1900
1901     if (!c->tasks)
1902         return ;
1903     switch (c->tasks->which)
1904     {
1905     case ZOOM_TASK_SEARCH:
1906         resultset = c->tasks->u.search.resultset;
1907         break;
1908     case ZOOM_TASK_RETRIEVE:
1909         resultset = c->tasks->u.retrieve.resultset;
1910         break;
1911     default:
1912         return;
1913     }
1914     if (sr && sr->which == Z_Records_NSD)
1915     {
1916         Z_DiagRec dr, *dr_p = &dr;
1917         dr.which = Z_DiagRec_defaultFormat;
1918         dr.u.defaultFormat = sr->u.nonSurrogateDiagnostic;
1919
1920         response_diag (c, dr_p);
1921     }
1922     else if (sr && sr->which == Z_Records_multipleNSD)
1923     {
1924         if (sr->u.multipleNonSurDiagnostics->num_diagRecs >= 1)
1925             response_diag(c, sr->u.multipleNonSurDiagnostics->diagRecs[0]);
1926         else
1927             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
1928     }
1929     else
1930     {
1931         if (resultset->count + resultset->start > resultset->size)
1932             resultset->count = resultset->size - resultset->start;
1933         if (resultset->count < 0)
1934             resultset->count = 0;
1935         if (sr && sr->which == Z_Records_DBOSD)
1936         {
1937             int i;
1938             NMEM nmem = odr_extract_mem (c->odr_in);
1939             Z_NamePlusRecordList *p =
1940                 sr->u.databaseOrSurDiagnostics;
1941             for (i = 0; i<p->num_records; i++)
1942             {
1943                 record_cache_add (resultset, p->records[i],
1944                                   i+ resultset->start);
1945             }
1946             /* transfer our response to search_nmem .. we need it later */
1947             nmem_transfer (resultset->odr->mem, nmem);
1948             nmem_destroy (nmem);
1949             if (present_phase && p->num_records == 0)
1950             {
1951                 /* present response and we didn't get any records! */
1952                 set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
1953             }
1954         }
1955         else if (present_phase)
1956         {
1957             /* present response and we didn't get any records! */
1958             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
1959         }
1960     }
1961 }
1962
1963 static void handle_present_response (ZOOM_connection c, Z_PresentResponse *pr)
1964 {
1965     handle_records (c, pr->records, 1);
1966 }
1967
1968 static void handle_search_response (ZOOM_connection c, Z_SearchResponse *sr)
1969 {
1970     ZOOM_resultset resultset;
1971     ZOOM_Event event;
1972
1973     yaz_log (LOG_DEBUG, "got search response");
1974
1975     if (!c->tasks || c->tasks->which != ZOOM_TASK_SEARCH)
1976         return ;
1977
1978     event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
1979     ZOOM_connection_put_event(c, event);
1980
1981     resultset = c->tasks->u.search.resultset;
1982
1983     resultset->size = *sr->resultCount;
1984     handle_records (c, sr->records, 0);
1985 }
1986
1987 static void sort_response (ZOOM_connection c, Z_SortResponse *res)
1988 {
1989     if (res->diagnostics && res->num_diagnostics > 0)
1990         response_diag (c, res->diagnostics[0]);
1991 }
1992
1993 static int scan_response (ZOOM_connection c, Z_ScanResponse *res)
1994 {
1995     NMEM nmem = odr_extract_mem (c->odr_in);
1996     ZOOM_scanset scan;
1997
1998     if (!c->tasks || c->tasks->which != ZOOM_TASK_SCAN)
1999         return 0;
2000     scan = c->tasks->u.scan.scan;
2001
2002     if (res->entries && res->entries->nonsurrogateDiagnostics)
2003         response_diag(c, res->entries->nonsurrogateDiagnostics[0]);
2004     scan->scan_response = res;
2005     nmem_transfer (scan->odr->mem, nmem);
2006     if (res->stepSize)
2007         ZOOM_options_set_int (scan->options, "stepSize", *res->stepSize);
2008     if (res->positionOfTerm)
2009         ZOOM_options_set_int (scan->options, "position", *res->positionOfTerm);
2010     if (res->scanStatus)
2011         ZOOM_options_set_int (scan->options, "scanStatus", *res->scanStatus);
2012     if (res->numberOfEntriesReturned)
2013         ZOOM_options_set_int (scan->options, "number",
2014                               *res->numberOfEntriesReturned);
2015     nmem_destroy (nmem);
2016     return 1;
2017 }
2018
2019 static zoom_ret send_sort (ZOOM_connection c,
2020                            ZOOM_resultset resultset)
2021 {
2022     if (c->error)
2023         resultset->r_sort_spec = 0;
2024     if (resultset->r_sort_spec)
2025     {
2026         Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_sortRequest);
2027         Z_SortRequest *req = apdu->u.sortRequest;
2028
2029         req->num_inputResultSetNames = 1;
2030         req->inputResultSetNames = (Z_InternationalString **)
2031             odr_malloc (c->odr_out, sizeof(*req->inputResultSetNames));
2032         req->inputResultSetNames[0] =
2033             odr_strdup (c->odr_out, resultset->setname);
2034         req->sortedResultSetName = odr_strdup (c->odr_out, resultset->setname);
2035         req->sortSequence = resultset->r_sort_spec;
2036         resultset->r_sort_spec = 0;
2037         return send_APDU (c, apdu);
2038     }
2039     return zoom_complete;
2040 }
2041
2042 static zoom_ret send_present (ZOOM_connection c)
2043 {
2044     Z_APDU *apdu = 0;
2045     Z_PresentRequest *req = 0;
2046     int i = 0;
2047     const char *syntax = 0;
2048     const char *elementSetName = 0;
2049     ZOOM_resultset  resultset;
2050
2051     if (!c->tasks)
2052         return zoom_complete;
2053
2054     switch (c->tasks->which)
2055     {
2056     case ZOOM_TASK_SEARCH:
2057         resultset = c->tasks->u.search.resultset;
2058         break;
2059     case ZOOM_TASK_RETRIEVE:
2060         resultset = c->tasks->u.retrieve.resultset;
2061         resultset->start = c->tasks->u.retrieve.start;
2062         resultset->count = c->tasks->u.retrieve.count;
2063
2064         if (resultset->start >= resultset->size)
2065             return zoom_complete;
2066         if (resultset->start + resultset->count > resultset->size)
2067             resultset->count = resultset->size - resultset->start;
2068         break;
2069     default:
2070         return zoom_complete;
2071     }
2072
2073     syntax = ZOOM_resultset_option_get (resultset, "preferredRecordSyntax");
2074     elementSetName = ZOOM_resultset_option_get (resultset, "elementSetName");
2075
2076     if (c->error)                  /* don't continue on error */
2077         return zoom_complete;
2078     if (resultset->start < 0)
2079         return zoom_complete;
2080     for (i = 0; i<resultset->count; i++)
2081     {
2082         ZOOM_record rec =
2083             record_cache_lookup (resultset, i + resultset->start);
2084         if (!rec)
2085             break;
2086     }
2087     if (i == resultset->count)
2088         return zoom_complete;
2089
2090     apdu = zget_APDU(c->odr_out, Z_APDU_presentRequest);
2091     req = apdu->u.presentRequest;
2092
2093     resultset->start += i;
2094     resultset->count -= i;
2095     *req->resultSetStartPoint = resultset->start + 1;
2096     *req->numberOfRecordsRequested = resultset->step>0 ?
2097         resultset->step : resultset->count;
2098     assert (*req->numberOfRecordsRequested > 0);
2099
2100     if (syntax && *syntax)
2101         req->preferredRecordSyntax =
2102             yaz_str_to_z3950oid (c->odr_out, CLASS_RECSYN, syntax);
2103
2104     if (resultset->schema && *resultset->schema)
2105     {
2106         Z_RecordComposition *compo = (Z_RecordComposition *)
2107             odr_malloc (c->odr_out, sizeof(*compo));
2108
2109         req->recordComposition = compo;
2110         compo->which = Z_RecordComp_complex;
2111         compo->u.complex = (Z_CompSpec *)
2112             odr_malloc(c->odr_out, sizeof(*compo->u.complex));
2113         compo->u.complex->selectAlternativeSyntax = (bool_t *)
2114             odr_malloc(c->odr_out, sizeof(bool_t));
2115         *compo->u.complex->selectAlternativeSyntax = 0;
2116
2117         compo->u.complex->generic = (Z_Specification *)
2118             odr_malloc(c->odr_out, sizeof(*compo->u.complex->generic));
2119
2120         compo->u.complex->generic->which = Z_Schema_oid;
2121         compo->u.complex->generic->schema.oid = (Odr_oid *)
2122             yaz_str_to_z3950oid (c->odr_out, CLASS_SCHEMA, resultset->schema);
2123
2124         if (!compo->u.complex->generic->schema.oid)
2125         {
2126             /* OID wasn't a schema! Try record syntax instead. */
2127
2128             compo->u.complex->generic->schema.oid = (Odr_oid *)
2129                 yaz_str_to_z3950oid (c->odr_out, CLASS_RECSYN, resultset->schema);
2130         }
2131         if (elementSetName && *elementSetName)
2132         {
2133             compo->u.complex->generic->elementSpec = (Z_ElementSpec *)
2134                 odr_malloc(c->odr_out, sizeof(Z_ElementSpec));
2135             compo->u.complex->generic->elementSpec->which =
2136                 Z_ElementSpec_elementSetName;
2137             compo->u.complex->generic->elementSpec->u.elementSetName =
2138                 odr_strdup (c->odr_out, elementSetName);
2139         }
2140         else
2141             compo->u.complex->generic->elementSpec = 0;
2142         compo->u.complex->num_dbSpecific = 0;
2143         compo->u.complex->dbSpecific = 0;
2144         compo->u.complex->num_recordSyntax = 0;
2145         compo->u.complex->recordSyntax = 0;
2146     }
2147     else if (elementSetName && *elementSetName)
2148     {
2149         Z_ElementSetNames *esn = (Z_ElementSetNames *)
2150             odr_malloc (c->odr_out, sizeof(*esn));
2151         Z_RecordComposition *compo = (Z_RecordComposition *)
2152             odr_malloc (c->odr_out, sizeof(*compo));
2153
2154         esn->which = Z_ElementSetNames_generic;
2155         esn->u.generic = odr_strdup (c->odr_out, elementSetName);
2156         compo->which = Z_RecordComp_simple;
2157         compo->u.simple = esn;
2158         req->recordComposition = compo;
2159     }
2160     req->resultSetId = odr_strdup(c->odr_out, resultset->setname);
2161     return send_APDU (c, apdu);
2162 }
2163
2164 ZOOM_API(ZOOM_scanset)
2165 ZOOM_connection_scan (ZOOM_connection c, const char *start)
2166 {
2167     ZOOM_scanset scan = (ZOOM_scanset) xmalloc (sizeof(*scan));
2168
2169     scan->connection = c;
2170     scan->odr = odr_createmem (ODR_DECODE);
2171     scan->options = ZOOM_options_create_with_parent (c->options);
2172     scan->refcount = 1;
2173     scan->scan_response = 0;
2174
2175     if ((scan->termListAndStartPoint =
2176          p_query_scan(scan->odr, PROTO_Z3950, &scan->attributeSet,
2177                       start)))
2178     {
2179         ZOOM_task task = ZOOM_connection_add_task (c, ZOOM_TASK_SCAN);
2180         task->u.scan.scan = scan;
2181
2182         (scan->refcount)++;
2183         if (!c->async)
2184         {
2185             while (ZOOM_event (1, &c))
2186                 ;
2187         }
2188     }
2189     return scan;
2190 }
2191
2192 ZOOM_API(void)
2193 ZOOM_scanset_destroy (ZOOM_scanset scan)
2194 {
2195     if (!scan)
2196         return;
2197     (scan->refcount)--;
2198     if (scan->refcount == 0)
2199     {
2200         odr_destroy (scan->odr);
2201
2202         ZOOM_options_destroy (scan->options);
2203         xfree (scan);
2204     }
2205 }
2206
2207 static zoom_ret send_package (ZOOM_connection c)
2208 {
2209     ZOOM_Event event;
2210     if (!c->tasks)
2211         return zoom_complete;
2212     assert (c->tasks->which == ZOOM_TASK_PACKAGE);
2213
2214     event = ZOOM_Event_create (ZOOM_EVENT_SEND_APDU);
2215     ZOOM_connection_put_event (c, event);
2216
2217     return do_write_ex (c, c->tasks->u.package->buf_out,
2218                         c->tasks->u.package->len_out);
2219 }
2220
2221 static zoom_ret send_scan (ZOOM_connection c)
2222 {
2223     ZOOM_scanset scan;
2224     Z_APDU *apdu = zget_APDU(c->odr_out, Z_APDU_scanRequest);
2225     Z_ScanRequest *req = apdu->u.scanRequest;
2226     if (!c->tasks)
2227         return zoom_complete;
2228     assert (c->tasks->which == ZOOM_TASK_SCAN);
2229     scan = c->tasks->u.scan.scan;
2230
2231     req->termListAndStartPoint = scan->termListAndStartPoint;
2232     req->attributeSet = scan->attributeSet;
2233
2234     *req->numberOfTermsRequested =
2235         ZOOM_options_get_int(scan->options, "number", 10);
2236
2237     req->preferredPositionInResponse =
2238         odr_intdup (c->odr_out,
2239                     ZOOM_options_get_int(scan->options, "position", 1));
2240
2241     req->stepSize =
2242         odr_intdup (c->odr_out,
2243                     ZOOM_options_get_int(scan->options, "stepSize", 0));
2244
2245     req->databaseNames = set_DatabaseNames (c, scan->options,
2246                                             &req->num_databaseNames);
2247
2248     return send_APDU (c, apdu);
2249 }
2250
2251 ZOOM_API(size_t)
2252 ZOOM_scanset_size (ZOOM_scanset scan)
2253 {
2254     if (!scan || !scan->scan_response || !scan->scan_response->entries)
2255         return 0;
2256     return scan->scan_response->entries->num_entries;
2257 }
2258
2259 ZOOM_API(const char *)
2260 ZOOM_scanset_term (ZOOM_scanset scan, size_t pos,
2261                    int *occ, int *len)
2262 {
2263     const char *term = 0;
2264     size_t noent = ZOOM_scanset_size (scan);
2265     Z_ScanResponse *res = scan->scan_response;
2266
2267     *len = 0;
2268     *occ = 0;
2269     if (pos >= noent)
2270         return 0;
2271     if (res->entries->entries[pos]->which == Z_Entry_termInfo)
2272     {
2273         Z_TermInfo *t = res->entries->entries[pos]->u.termInfo;
2274
2275         if (t->term->which == Z_Term_general)
2276         {
2277             term = (const char *) t->term->u.general->buf;
2278             *len = t->term->u.general->len;
2279         }
2280         *occ = t->globalOccurrences ? *t->globalOccurrences : 0;
2281     }
2282     return term;
2283 }
2284
2285 ZOOM_API(const char *)
2286 ZOOM_scanset_display_term (ZOOM_scanset scan, size_t pos,
2287                            int *occ, int *len)
2288 {
2289     const char *term = 0;
2290     size_t noent = ZOOM_scanset_size (scan);
2291     Z_ScanResponse *res = scan->scan_response;
2292
2293     *len = 0;
2294     *occ = 0;
2295     if (pos >= noent)
2296         return 0;
2297     if (res->entries->entries[pos]->which == Z_Entry_termInfo)
2298     {
2299         Z_TermInfo *t = res->entries->entries[pos]->u.termInfo;
2300
2301         if (t->displayTerm)
2302         {
2303             term = t->displayTerm;
2304             *len = strlen(term);
2305         }
2306         else if (t->term->which == Z_Term_general)
2307         {
2308             term = (const char *) t->term->u.general->buf;
2309             *len = t->term->u.general->len;
2310         }
2311         *occ = t->globalOccurrences ? *t->globalOccurrences : 0;
2312     }
2313     return term;
2314 }
2315
2316 ZOOM_API(const char *)
2317 ZOOM_scanset_option_get (ZOOM_scanset scan, const char *key)
2318 {
2319     return ZOOM_options_get (scan->options, key);
2320 }
2321
2322 ZOOM_API(void)
2323 ZOOM_scanset_option_set (ZOOM_scanset scan, const char *key,
2324                               const char *val)
2325 {
2326     ZOOM_options_set (scan->options, key, val);
2327 }
2328
2329 static Z_APDU *create_es_package (ZOOM_package p, int type)
2330 {
2331     const char *str;
2332     Z_APDU *apdu = zget_APDU(p->odr_out, Z_APDU_extendedServicesRequest);
2333     Z_ExtendedServicesRequest *req = apdu->u.extendedServicesRequest;
2334
2335     *req->function = Z_ExtendedServicesRequest_create;
2336
2337     str = ZOOM_options_get(p->options, "package-name");
2338     if (str && *str)
2339         req->packageName = nmem_strdup (p->odr_out->mem, str);
2340
2341     str = ZOOM_options_get(p->options, "user-id");
2342     if (str)
2343         req->userId = nmem_strdup (p->odr_out->mem, str);
2344
2345     req->packageType = yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2346                                               type);
2347
2348     str = ZOOM_options_get(p->options, "function");
2349     if (str)
2350     {
2351         if (!strcmp (str, "create"))
2352             *req->function = 1;
2353         if (!strcmp (str, "delete"))
2354             *req->function = 2;
2355         if (!strcmp (str, "modify"))
2356             *req->function = 3;
2357     }
2358     return apdu;
2359 }
2360
2361 static const char *ill_array_lookup (void *clientData, const char *idx)
2362 {
2363     ZOOM_package p = (ZOOM_package) clientData;
2364     return ZOOM_options_get (p->options, idx+4);
2365 }
2366
2367 static Z_External *encode_ill_request (ZOOM_package p)
2368 {
2369     ODR out = p->odr_out;
2370     ILL_Request *req;
2371     Z_External *r = 0;
2372     struct ill_get_ctl ctl;
2373
2374     ctl.odr = p->odr_out;
2375     ctl.clientData = p;
2376     ctl.f = ill_array_lookup;
2377
2378     req = ill_get_ILLRequest(&ctl, "ill", 0);
2379
2380     if (!ill_Request (out, &req, 0, 0))
2381     {
2382         int ill_request_size;
2383         char *ill_request_buf = odr_getbuf (out, &ill_request_size, 0);
2384         if (ill_request_buf)
2385             odr_setbuf (out, ill_request_buf, ill_request_size, 1);
2386         return 0;
2387     }
2388     else
2389     {
2390         oident oid;
2391         int illRequest_size = 0;
2392         char *illRequest_buf = odr_getbuf (out, &illRequest_size, 0);
2393
2394         oid.proto = PROTO_GENERAL;
2395         oid.oclass = CLASS_GENERAL;
2396         oid.value = VAL_ISO_ILL_1;
2397
2398         r = (Z_External *) odr_malloc (out, sizeof(*r));
2399         r->direct_reference = odr_oiddup(out,oid_getoidbyent(&oid));
2400         r->indirect_reference = 0;
2401         r->descriptor = 0;
2402         r->which = Z_External_single;
2403
2404         r->u.single_ASN1_type = (Odr_oct *)
2405             odr_malloc (out, sizeof(*r->u.single_ASN1_type));
2406         r->u.single_ASN1_type->buf = (unsigned char*)
2407             odr_malloc (out, illRequest_size);
2408         r->u.single_ASN1_type->len = illRequest_size;
2409         r->u.single_ASN1_type->size = illRequest_size;
2410         memcpy (r->u.single_ASN1_type->buf, illRequest_buf, illRequest_size);
2411     }
2412     return r;
2413 }
2414
2415 static Z_ItemOrder *encode_item_order(ZOOM_package p)
2416 {
2417     Z_ItemOrder *req = (Z_ItemOrder *) odr_malloc (p->odr_out, sizeof(*req));
2418     const char *str;
2419
2420     req->which=Z_IOItemOrder_esRequest;
2421     req->u.esRequest = (Z_IORequest *)
2422         odr_malloc(p->odr_out,sizeof(Z_IORequest));
2423
2424     /* to keep part ... */
2425     req->u.esRequest->toKeep = (Z_IOOriginPartToKeep *)
2426         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartToKeep));
2427     req->u.esRequest->toKeep->supplDescription = 0;
2428     req->u.esRequest->toKeep->contact = (Z_IOContact *)
2429         odr_malloc (p->odr_out, sizeof(*req->u.esRequest->toKeep->contact));
2430
2431     str = ZOOM_options_get(p->options, "contact-name");
2432     req->u.esRequest->toKeep->contact->name = str ?
2433         nmem_strdup (p->odr_out->mem, str) : 0;
2434
2435     str = ZOOM_options_get(p->options, "contact-phone");
2436     req->u.esRequest->toKeep->contact->phone = str ?
2437         nmem_strdup (p->odr_out->mem, str) : 0;
2438
2439     str = ZOOM_options_get(p->options, "contact-email");
2440     req->u.esRequest->toKeep->contact->email = str ?
2441         nmem_strdup (p->odr_out->mem, str) : 0;
2442
2443     req->u.esRequest->toKeep->addlBilling = 0;
2444
2445     /* not to keep part ... */
2446     req->u.esRequest->notToKeep = (Z_IOOriginPartNotToKeep *)
2447         odr_malloc(p->odr_out,sizeof(Z_IOOriginPartNotToKeep));
2448
2449     str = ZOOM_options_get(p->options, "itemorder-setname");
2450     if (!str)
2451         str = "default";
2452
2453     if (!*str)
2454         req->u.esRequest->notToKeep->resultSetItem = 0;
2455     else
2456     {
2457         req->u.esRequest->notToKeep->resultSetItem = (Z_IOResultSetItem *)
2458            odr_malloc(p->odr_out, sizeof(Z_IOResultSetItem));
2459
2460         req->u.esRequest->notToKeep->resultSetItem->resultSetId =
2461            nmem_strdup (p->odr_out->mem, str);
2462         req->u.esRequest->notToKeep->resultSetItem->item =
2463             (int *) odr_malloc(p->odr_out, sizeof(int));
2464
2465         str = ZOOM_options_get(p->options, "itemorder-item");
2466         *req->u.esRequest->notToKeep->resultSetItem->item =
2467             (str ? atoi(str) : 1);
2468     }
2469     req->u.esRequest->notToKeep->itemRequest = encode_ill_request(p);
2470
2471     return req;
2472 }
2473
2474 Z_APDU *create_admin_package(ZOOM_package p, int type,
2475                              Z_ESAdminOriginPartToKeep **toKeepP,
2476                              Z_ESAdminOriginPartNotToKeep **notToKeepP)
2477 {
2478     Z_APDU *apdu = create_es_package (p, VAL_ADMINSERVICE);
2479     if (apdu)
2480     {
2481         Z_ESAdminOriginPartToKeep  *toKeep;
2482         Z_ESAdminOriginPartNotToKeep  *notToKeep;
2483         Z_External *r = (Z_External *) odr_malloc (p->odr_out, sizeof(*r));
2484         const char *first_db = "Default";
2485         int num_db;
2486         char **db = set_DatabaseNames(p->connection, p->options, &num_db);
2487         if (num_db > 0)
2488             first_db = db[0];
2489
2490         r->direct_reference =
2491             yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2492                                    VAL_ADMINSERVICE);
2493         r->descriptor = 0;
2494         r->indirect_reference = 0;
2495         r->which = Z_External_ESAdmin;
2496
2497         r->u.adminService = (Z_Admin *)
2498             odr_malloc(p->odr_out, sizeof(*r->u.adminService));
2499         r->u.adminService->which = Z_Admin_esRequest;
2500         r->u.adminService->u.esRequest = (Z_AdminEsRequest *)
2501             odr_malloc(p->odr_out, sizeof(*r->u.adminService->u.esRequest));
2502
2503         toKeep = r->u.adminService->u.esRequest->toKeep =
2504             (Z_ESAdminOriginPartToKeep *)
2505             odr_malloc(p->odr_out, sizeof(*r->u.adminService->u.esRequest->toKeep));
2506         toKeep->which=type;
2507         toKeep->databaseName = odr_strdup(p->odr_out, first_db);
2508         toKeep->u.create=odr_nullval();
2509         apdu->u.extendedServicesRequest->taskSpecificParameters = r;
2510
2511         r->u.adminService->u.esRequest->notToKeep = notToKeep =
2512             (Z_ESAdminOriginPartNotToKeep *)
2513             odr_malloc(p->odr_out,
2514                        sizeof(*r->u.adminService->u.esRequest->notToKeep));
2515         notToKeep->which=Z_ESAdminOriginPartNotToKeep_recordsWillFollow;
2516         notToKeep->u.recordsWillFollow=odr_nullval();
2517         if (toKeepP)
2518             *toKeepP = toKeep;
2519         if (notToKeepP)
2520             *notToKeepP = notToKeep;
2521     }
2522     return apdu;
2523 }
2524
2525 static Z_APDU *create_update_package(ZOOM_package p)
2526 {
2527     Z_APDU *apdu = 0;
2528     const char *first_db = "Default";
2529     int num_db;
2530     char **db = set_DatabaseNames(p->connection, p->options, &num_db);
2531     const char *action = ZOOM_options_get(p->options, "action");
2532     const char *recordIdOpaque = ZOOM_options_get(p->options, "recordIdOpaque");
2533     const char *recordIdNumber = ZOOM_options_get(p->options, "recordIdNumber");
2534     const char *record_buf = ZOOM_options_get(p->options, "record");
2535     const char *syntax_str = ZOOM_options_get(p->options, "syntax");
2536     int syntax_oid = VAL_NONE;
2537     int action_no = -1;
2538
2539     if (syntax_str)
2540         syntax_oid = oid_getvalbyname(syntax_str);
2541     if (!record_buf)
2542     {
2543         record_buf = "void";
2544         syntax_oid = VAL_SUTRS;
2545     }
2546     if (syntax_oid != VAL_NONE)
2547         syntax_oid = VAL_TEXT_XML;
2548
2549     if (num_db > 0)
2550         first_db = db[0];
2551
2552     if (!action)
2553         action = "specialUpdate";
2554
2555     if (!strcmp(action, "recordInsert"))
2556         action_no = Z_IUOriginPartToKeep_recordInsert;
2557     else if (!strcmp(action, "recordReplace"))
2558         action_no = Z_IUOriginPartToKeep_recordReplace;
2559     else if (!strcmp(action, "recordDelete"))
2560         action_no = Z_IUOriginPartToKeep_recordDelete;
2561     else if (!strcmp(action, "elementUpdate"))
2562         action_no = Z_IUOriginPartToKeep_elementUpdate;
2563     else if (!strcmp(action, "specialUpdate"))
2564         action_no = Z_IUOriginPartToKeep_specialUpdate;
2565     else
2566         return 0;
2567
2568     apdu = create_es_package (p, VAL_DBUPDATE);
2569     if (apdu)
2570     {
2571         Z_IUOriginPartToKeep *toKeep;
2572         Z_IUSuppliedRecords *notToKeep;
2573         Z_External *r = (Z_External *)
2574             odr_malloc (p->odr_out, sizeof(*r));
2575
2576         apdu->u.extendedServicesRequest->taskSpecificParameters = r;
2577
2578         r->direct_reference =
2579             yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2580                                    VAL_DBUPDATE);
2581         r->descriptor = 0;
2582         r->which = Z_External_update;
2583         r->indirect_reference = 0;
2584         r->u.update = (Z_IUUpdate *)
2585             odr_malloc(p->odr_out, sizeof(*r->u.update));
2586
2587         r->u.update->which = Z_IUUpdate_esRequest;
2588         r->u.update->u.esRequest = (Z_IUUpdateEsRequest *)
2589             odr_malloc(p->odr_out, sizeof(*r->u.update->u.esRequest));
2590         toKeep = r->u.update->u.esRequest->toKeep =
2591             (Z_IUOriginPartToKeep *)
2592             odr_malloc(p->odr_out, sizeof(*toKeep));
2593
2594         toKeep->databaseName = odr_strdup(p->odr_out, first_db);
2595         toKeep->schema = 0;
2596         toKeep->elementSetName = 0;
2597         toKeep->actionQualifier = 0;
2598         toKeep->action = odr_intdup(p->odr_out, action_no);
2599
2600         notToKeep = r->u.update->u.esRequest->notToKeep =
2601             (Z_IUSuppliedRecords *)
2602             odr_malloc(p->odr_out, sizeof(*notToKeep));
2603         notToKeep->num = 1;
2604         notToKeep->elements = (Z_IUSuppliedRecords_elem **)
2605             odr_malloc(p->odr_out, sizeof(*notToKeep->elements));
2606         notToKeep->elements[0] = (Z_IUSuppliedRecords_elem *)
2607             odr_malloc(p->odr_out, sizeof(**notToKeep->elements));
2608         notToKeep->elements[0]->which = Z_IUSuppliedRecords_elem_opaque;
2609         if (recordIdOpaque)
2610         {
2611             notToKeep->elements[0]->u.opaque = (Odr_oct *)
2612                 odr_malloc (p->odr_out, sizeof(Odr_oct));
2613             notToKeep->elements[0]->u.opaque->size =
2614                 notToKeep->elements[0]->u.opaque->len = strlen(recordIdOpaque);
2615             notToKeep->elements[0]->u.opaque->buf =
2616                 odr_strdup(p->odr_out, recordIdOpaque);
2617         }
2618         else if (recordIdNumber)
2619         {
2620             notToKeep->elements[0]->which = Z_IUSuppliedRecords_elem_number;
2621
2622             notToKeep->elements[0]->u.number =
2623                 odr_intdup(p->odr_out, atoi(recordIdNumber));
2624         }
2625         else
2626             notToKeep->elements[0]->u.opaque = 0;
2627         notToKeep->elements[0]->supplementalId = 0;
2628         notToKeep->elements[0]->correlationInfo = 0;
2629         notToKeep->elements[0]->record =
2630             z_ext_record(p->odr_out, syntax_oid,
2631                          record_buf, strlen(record_buf));
2632     }
2633     if (0 && apdu)
2634     {
2635        ODR print = odr_createmem(ODR_PRINT);
2636
2637        z_APDU(print, &apdu, 0, 0);
2638        odr_destroy(print);
2639     }
2640     return apdu;
2641 }
2642
2643 ZOOM_API(void)
2644     ZOOM_package_send (ZOOM_package p, const char *type)
2645 {
2646     Z_APDU *apdu = 0;
2647     ZOOM_connection c;
2648     if (!p)
2649         return;
2650     c = p->connection;
2651     odr_reset (p->odr_out);
2652     xfree (p->buf_out);
2653     p->buf_out = 0;
2654     if (!strcmp(type, "itemorder"))
2655     {
2656         apdu = create_es_package (p, VAL_ITEMORDER);
2657         if (apdu)
2658         {
2659             Z_External *r = (Z_External *) odr_malloc (p->odr_out, sizeof(*r));
2660
2661             r->direct_reference =
2662                 yaz_oidval_to_z3950oid(p->odr_out, CLASS_EXTSERV,
2663                                        VAL_ITEMORDER);
2664             r->descriptor = 0;
2665             r->which = Z_External_itemOrder;
2666             r->indirect_reference = 0;
2667             r->u.itemOrder = encode_item_order (p);
2668
2669             apdu->u.extendedServicesRequest->taskSpecificParameters = r;
2670         }
2671     }
2672     if (!strcmp(type, "create"))  /* create database */
2673     {
2674         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_create,
2675                                     0, 0);
2676     }
2677     if (!strcmp(type, "drop"))  /* drop database */
2678     {
2679         apdu = create_admin_package(p, Z_ESAdminOriginPartToKeep_drop,
2680                                     0, 0);
2681     }
2682     if (!strcmp(type, "update")) /* update record(s) */
2683     {
2684         apdu = create_update_package(p);
2685     }
2686     if (apdu)
2687     {
2688         if (encode_APDU(p->connection, apdu, p->odr_out) == 0)
2689         {
2690             char *buf;
2691
2692             ZOOM_task task = ZOOM_connection_add_task (c, ZOOM_TASK_PACKAGE);
2693             task->u.package = p;
2694             buf = odr_getbuf(p->odr_out, &p->len_out, 0);
2695             p->buf_out = (char *) xmalloc (p->len_out);
2696             memcpy (p->buf_out, buf, p->len_out);
2697
2698             (p->refcount)++;
2699             if (!c->async)
2700             {
2701                 while (ZOOM_event (1, &c))
2702                     ;
2703             }
2704         }
2705     }
2706 }
2707
2708 ZOOM_API(ZOOM_package)
2709     ZOOM_connection_package (ZOOM_connection c, ZOOM_options options)
2710 {
2711     ZOOM_package p = (ZOOM_package) xmalloc (sizeof(*p));
2712
2713     p->connection = c;
2714     p->odr_out = odr_createmem (ODR_ENCODE);
2715     p->options = ZOOM_options_create_with_parent2 (options, c->options);
2716     p->refcount = 1;
2717     p->buf_out = 0;
2718     p->len_out = 0;
2719     return p;
2720 }
2721
2722 ZOOM_API(void)
2723     ZOOM_package_destroy(ZOOM_package p)
2724 {
2725     if (!p)
2726         return;
2727     (p->refcount)--;
2728     if (p->refcount == 0)
2729     {
2730         odr_destroy (p->odr_out);
2731         xfree (p->buf_out);
2732
2733         ZOOM_options_destroy (p->options);
2734         xfree (p);
2735     }
2736 }
2737
2738 ZOOM_API(const char *)
2739 ZOOM_package_option_get (ZOOM_package p, const char *key)
2740 {
2741     return ZOOM_options_get (p->options, key);
2742 }
2743
2744
2745 ZOOM_API(void)
2746 ZOOM_package_option_set (ZOOM_package p, const char *key,
2747                               const char *val)
2748 {
2749     ZOOM_options_set (p->options, key, val);
2750 }
2751
2752 static int ZOOM_connection_exec_task (ZOOM_connection c)
2753 {
2754     ZOOM_task task = c->tasks;
2755     zoom_ret ret = zoom_complete;
2756
2757     if (!task)
2758     {
2759         yaz_log (LOG_DEBUG, "ZOOM_connection_exec_task task=<null>");
2760         return 0;
2761     }
2762     yaz_log (LOG_DEBUG, "ZOOM_connection_exec_task type=%d run=%d",
2763              task->which, task->running);
2764     if (c->error != ZOOM_ERROR_NONE)
2765     {
2766         yaz_log (LOG_DEBUG, "remove tasks because of error = %d", c->error);
2767         ZOOM_connection_remove_tasks (c);
2768         return 0;
2769     }
2770     if (task->running)
2771     {
2772         yaz_log (LOG_DEBUG, "task already running");
2773         return 0;
2774     }
2775     task->running = 1;
2776     ret = zoom_complete;
2777     if (c->cs || task->which == ZOOM_TASK_CONNECT)
2778     {
2779         switch (task->which)
2780         {
2781         case ZOOM_TASK_SEARCH:
2782             if (c->proto == PROTO_HTTP)
2783                 ret = ZOOM_connection_srw_send_search(c);
2784             else
2785                 ret = ZOOM_connection_send_search(c);
2786             break;
2787         case ZOOM_TASK_RETRIEVE:
2788             if (c->proto == PROTO_HTTP)
2789                 ret = ZOOM_connection_srw_send_search(c);
2790             else
2791                 ret = send_present (c);
2792             break;
2793         case ZOOM_TASK_CONNECT:
2794             ret = do_connect(c);
2795             break;
2796         case ZOOM_TASK_SCAN:
2797             ret = send_scan(c);
2798             break;
2799         case ZOOM_TASK_PACKAGE:
2800             ret = send_package(c);
2801             break;
2802         case ZOOM_TASK_SORT:
2803             c->tasks->u.sort.resultset->r_sort_spec =
2804                 c->tasks->u.sort.q->sort_spec;
2805             ret = send_sort(c, c->tasks->u.sort.resultset);
2806             break;
2807         }
2808     }
2809     else
2810     {
2811         yaz_log (LOG_DEBUG, "remove tasks because no connection exist");
2812         ZOOM_connection_remove_tasks (c);
2813     }
2814     if (ret == zoom_complete)
2815     {
2816         yaz_log (LOG_DEBUG, "task removed (complete)");
2817         ZOOM_connection_remove_task (c);
2818         return 0;
2819     }
2820     yaz_log (LOG_DEBUG, "task pending");
2821     return 1;
2822 }
2823
2824 static zoom_ret send_sort_present (ZOOM_connection c)
2825 {
2826     zoom_ret r = zoom_complete;
2827
2828     if (c->tasks && c->tasks->which == ZOOM_TASK_SEARCH)
2829         r = send_sort (c, c->tasks->u.search.resultset);
2830     if (r == zoom_complete)
2831         r = send_present (c);
2832     return r;
2833 }
2834
2835 static int es_response (ZOOM_connection c,
2836                         Z_ExtendedServicesResponse *res)
2837 {
2838     if (!c->tasks || c->tasks->which != ZOOM_TASK_PACKAGE)
2839         return 0;
2840     if (res->diagnostics && res->num_diagnostics > 0)
2841         response_diag(c, res->diagnostics[0]);
2842     if (res->taskPackage &&
2843         res->taskPackage->which == Z_External_extendedService)
2844     {
2845         Z_TaskPackage *taskPackage = res->taskPackage->u.extendedService;
2846         Odr_oct *id = taskPackage->targetReference;
2847
2848         if (id)
2849             ZOOM_options_setl (c->tasks->u.package->options,
2850                                "targetReference", (char*) id->buf, id->len);
2851     }
2852     return 1;
2853 }
2854
2855
2856 static void handle_apdu (ZOOM_connection c, Z_APDU *apdu)
2857 {
2858     Z_InitResponse *initrs;
2859
2860     c->mask = 0;
2861     yaz_log (LOG_DEBUG, "recv APDU type=%d", apdu->which);
2862     switch(apdu->which)
2863     {
2864     case Z_APDU_initResponse:
2865         initrs = apdu->u.initResponse;
2866         ZOOM_connection_option_set(c, "serverImplementationId",
2867                                    initrs->implementationId ?
2868                                    initrs->implementationId : "");
2869         ZOOM_connection_option_set(c, "serverImplementationName",
2870                                    initrs->implementationName ?
2871                                    initrs->implementationName : "");
2872         ZOOM_connection_option_set(c, "serverImplementationVersion",
2873                                    initrs->implementationVersion ?
2874                                    initrs->implementationVersion : "");
2875         /* Set the three old options too, for old applications */
2876         ZOOM_connection_option_set(c, "targetImplementationId",
2877                                    initrs->implementationId ?
2878                                    initrs->implementationId : "");
2879         ZOOM_connection_option_set(c, "targetImplementationName",
2880                                    initrs->implementationName ?
2881                                    initrs->implementationName : "");
2882         ZOOM_connection_option_set(c, "targetImplementationVersion",
2883                                    initrs->implementationVersion ?
2884                                    initrs->implementationVersion : "");
2885         if (!*initrs->result)
2886         {
2887             set_ZOOM_error(c, ZOOM_ERROR_INIT, 0);
2888         }
2889         else
2890         {
2891             char *cookie =
2892                 yaz_oi_get_string_oidval (&apdu->u.initResponse->otherInfo,
2893                                           VAL_COOKIE, 1, 0);
2894             xfree (c->cookie_in);
2895             c->cookie_in = 0;
2896             if (cookie)
2897                 c->cookie_in = xstrdup(cookie);
2898             if (ODR_MASK_GET(initrs->options, Z_Options_namedResultSets) &&
2899                 ODR_MASK_GET(initrs->protocolVersion, Z_ProtocolVersion_3))
2900                 c->support_named_resultsets = 1;
2901             if (c->tasks)
2902             {
2903                 assert (c->tasks->which == ZOOM_TASK_CONNECT);
2904                 ZOOM_connection_remove_task (c);
2905             }
2906             ZOOM_connection_exec_task (c);
2907         }
2908         if (ODR_MASK_GET(initrs->options, Z_Options_negotiationModel))
2909         {
2910             NMEM tmpmem = nmem_create();
2911             Z_CharSetandLanguageNegotiation *p =
2912                 yaz_get_charneg_record(initrs->otherInfo);
2913
2914             if (p)
2915             {
2916                 char *charset=NULL, *lang=NULL;
2917                 int sel;
2918
2919                 yaz_get_response_charneg(tmpmem, p, &charset, &lang, &sel);
2920                 yaz_log(LOG_DEBUG, "Target accepted: charset %s, "
2921                         "language %s, select %d",
2922                         charset ? charset : "none", lang ? lang : "none", sel);
2923                 if (charset)
2924                     ZOOM_connection_option_set (c, "negotiation-charset",
2925                                                 charset);
2926                 if (lang)
2927                     ZOOM_connection_option_set (c, "negotiation-lang",
2928                                                 lang);
2929                 nmem_destroy(tmpmem);
2930             }
2931         }
2932         break;
2933     case Z_APDU_searchResponse:
2934         handle_search_response (c, apdu->u.searchResponse);
2935         if (send_sort_present (c) == zoom_complete)
2936             ZOOM_connection_remove_task (c);
2937         break;
2938     case Z_APDU_presentResponse:
2939         handle_present_response (c, apdu->u.presentResponse);
2940         if (send_present (c) == zoom_complete)
2941             ZOOM_connection_remove_task (c);
2942         break;
2943     case Z_APDU_sortResponse:
2944         sort_response (c, apdu->u.sortResponse);
2945         if (send_present (c) == zoom_complete)
2946             ZOOM_connection_remove_task (c);
2947         break;
2948     case Z_APDU_scanResponse:
2949         scan_response (c, apdu->u.scanResponse);
2950         ZOOM_connection_remove_task (c);
2951         break;
2952     case Z_APDU_extendedServicesResponse:
2953         es_response (c, apdu->u.extendedServicesResponse);
2954         ZOOM_connection_remove_task (c);
2955         break;
2956     case Z_APDU_close:
2957         if (c->reconnect_ok)
2958         {
2959             do_close(c);
2960             c->tasks->running = 0;
2961             ZOOM_connection_insert_task (c, ZOOM_TASK_CONNECT);
2962         }
2963         else
2964         {
2965             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, 0);
2966             do_close(c);
2967         }
2968         break;
2969     default:
2970         set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
2971         do_close(c);
2972     }
2973 }
2974
2975 #if HAVE_XML2
2976 static void handle_srw_response(ZOOM_connection c,
2977                                 Z_SRW_searchRetrieveResponse *res)
2978 {
2979     ZOOM_resultset resultset = 0;
2980     int i;
2981     NMEM nmem;
2982     ZOOM_Event event;
2983
2984     if (!c->tasks)
2985         return;
2986
2987     if (c->tasks->which == ZOOM_TASK_SEARCH)
2988         resultset = c->tasks->u.search.resultset;
2989     else if (c->tasks->which == ZOOM_TASK_RETRIEVE)
2990         resultset = c->tasks->u.retrieve.resultset;
2991     else
2992         return ;
2993
2994     event = ZOOM_Event_create(ZOOM_EVENT_RECV_SEARCH);
2995     ZOOM_connection_put_event(c, event);
2996
2997     resultset->size = 0;
2998
2999     yaz_log(LOG_DEBUG, "got SRW response OK");
3000
3001     if (res->numberOfRecords)
3002         resultset->size = *res->numberOfRecords;
3003
3004     for (i = 0; i<res->num_records; i++)
3005     {
3006         int pos;
3007
3008         Z_NamePlusRecord *npr = (Z_NamePlusRecord *)
3009             odr_malloc(c->odr_in, sizeof(Z_NamePlusRecord));
3010
3011         if (res->records[i].recordPosition &&
3012             *res->records[i].recordPosition > 0)
3013             pos = *res->records[i].recordPosition - 1;
3014         else
3015             pos = resultset->start + i;
3016
3017         npr->databaseName = 0;
3018         npr->which = Z_NamePlusRecord_databaseRecord;
3019         npr->u.databaseRecord = (Z_External *)
3020             odr_malloc(c->odr_in, sizeof(Z_External));
3021         npr->u.databaseRecord->descriptor = 0;
3022         npr->u.databaseRecord->direct_reference =
3023             yaz_oidval_to_z3950oid(c->odr_in, CLASS_RECSYN, VAL_TEXT_XML);
3024         npr->u.databaseRecord->which = Z_External_octet;
3025         npr->u.databaseRecord->u.octet_aligned = (Odr_oct *)
3026             odr_malloc(c->odr_in, sizeof(Odr_oct));
3027         npr->u.databaseRecord->u.octet_aligned->buf =
3028             res->records[i].recordData_buf;
3029         npr->u.databaseRecord->u.octet_aligned->len =
3030             npr->u.databaseRecord->u.octet_aligned->size =
3031             res->records[i].recordData_len;
3032         record_cache_add (resultset, npr, pos);
3033     }
3034     if (res->num_diagnostics > 0)
3035     {
3036         const char *uri = res->diagnostics[0].uri;
3037         if (uri)
3038         {
3039             int code = 0;
3040             const char *cp;
3041             if ((cp = strrchr(uri, '/')))
3042                 code = atoi(cp+1);
3043             set_dset_error(c, code, uri,
3044                            res->diagnostics[0].details, 0);
3045         }
3046     }
3047     nmem = odr_extract_mem(c->odr_in);
3048     nmem_transfer(resultset->odr->mem, nmem);
3049     nmem_destroy(nmem);
3050 }
3051 #endif
3052
3053 #if HAVE_XML2
3054 static void handle_http(ZOOM_connection c, Z_HTTP_Response *hres)
3055 {
3056     int ret = -1;
3057     const char *content_type = z_HTTP_header_lookup(hres->headers,
3058                                                     "Content-Type");
3059     const char *connection_head = z_HTTP_header_lookup(hres->headers,
3060                                                        "Connection");
3061     c->mask = 0;
3062     yaz_log (LOG_DEBUG, "handle_http");
3063
3064     if (content_type && !yaz_strcmp_del("text/xml", content_type, "; "))
3065     {
3066         Z_SOAP *soap_package = 0;
3067         ODR o = c->odr_in;
3068         Z_SOAP_Handler soap_handlers[2] = {
3069             {"http://www.loc.gov/zing/srw/", 0,
3070              (Z_SOAP_fun) yaz_srw_codec},
3071             {0, 0, 0}
3072         };
3073         ret = z_soap_codec(o, &soap_package,
3074                            &hres->content_buf, &hres->content_len,
3075                            soap_handlers);
3076         if (!ret && soap_package->which == Z_SOAP_generic &&
3077             soap_package->u.generic->no == 0)
3078         {
3079             Z_SRW_PDU *sr = soap_package->u.generic->p;
3080             if (sr->which == Z_SRW_searchRetrieve_response)
3081                 handle_srw_response(c, sr->u.response);
3082             else
3083                 ret = -1;
3084         }
3085         else if (!ret && (soap_package->which == Z_SOAP_fault
3086                           || soap_package->which == Z_SOAP_error))
3087         {
3088             set_HTTP_error(c, hres->code,
3089                            soap_package->u.fault->fault_code,
3090                            soap_package->u.fault->fault_string);
3091         }
3092         else
3093             ret = -1;
3094     }
3095     if (ret)
3096     {
3097         if (hres->code != 200)
3098             set_HTTP_error(c, hres->code, 0, 0);
3099         else
3100             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3101         do_close (c);
3102     }
3103     ZOOM_connection_remove_task(c);
3104     if (!strcmp(hres->version, "1.0"))
3105     {
3106         /* HTTP 1.0: only if Keep-Alive we stay alive.. */
3107         if (!connection_head || strcmp(connection_head, "Keep-Alive"))
3108             do_close(c);
3109     }
3110     else
3111     {
3112         /* HTTP 1.1: only if no close we stay alive .. */
3113         if (connection_head && !strcmp(connection_head, "close"))
3114             do_close(c);
3115     }
3116 }
3117 #endif
3118
3119 static int do_read (ZOOM_connection c)
3120 {
3121     int r, more;
3122     ZOOM_Event event;
3123
3124     event = ZOOM_Event_create (ZOOM_EVENT_RECV_DATA);
3125     ZOOM_connection_put_event (c, event);
3126
3127     r = cs_get (c->cs, &c->buf_in, &c->len_in);
3128     more = cs_more(c->cs);
3129     yaz_log (LOG_DEBUG, "do_read len=%d more=%d", r, more);
3130     if (r == 1)
3131         return 0;
3132     if (r <= 0)
3133     {
3134         if (c->reconnect_ok)
3135         {
3136             do_close (c);
3137             c->reconnect_ok = 0;
3138             yaz_log (LOG_DEBUG, "reconnect read");
3139             c->tasks->running = 0;
3140             ZOOM_connection_insert_task (c, ZOOM_TASK_CONNECT);
3141         }
3142         else
3143         {
3144             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, 0);
3145             do_close (c);
3146         }
3147     }
3148     else
3149     {
3150         Z_GDU *gdu;
3151         ZOOM_Event event;
3152
3153         odr_reset (c->odr_in);
3154         odr_setbuf (c->odr_in, c->buf_in, r, 0);
3155         event = ZOOM_Event_create (ZOOM_EVENT_RECV_APDU);
3156         ZOOM_connection_put_event (c, event);
3157
3158         if (!z_GDU (c->odr_in, &gdu, 0, 0))
3159         {
3160             int x;
3161             int err = odr_geterrorx(c->odr_in, &x);
3162             char msg[60];
3163             const char *element = odr_getelement(c->odr_in);
3164             sprintf (msg, "ODR code %d:%d element=%-20s",
3165                      err, x, element ? element : "<unknown>");
3166             set_ZOOM_error(c, ZOOM_ERROR_DECODE, msg);
3167             do_close (c);
3168         }
3169         else if (gdu->which == Z_GDU_Z3950)
3170             handle_apdu (c, gdu->u.z3950);
3171         else if (gdu->which == Z_GDU_HTTP_Response)
3172         {
3173 #if HAVE_XML2
3174             handle_http (c, gdu->u.HTTP_Response);
3175 #else
3176             set_ZOOM_error(c, ZOOM_ERROR_DECODE, 0);
3177             do_close (c);
3178 #endif
3179         }
3180         c->reconnect_ok = 0;
3181     }
3182     return 1;
3183 }
3184
3185 static zoom_ret do_write_ex (ZOOM_connection c, char *buf_out, int len_out)
3186 {
3187     int r;
3188     ZOOM_Event event;
3189
3190     event = ZOOM_Event_create(ZOOM_EVENT_SEND_DATA);
3191     ZOOM_connection_put_event (c, event);
3192
3193     yaz_log (LOG_DEBUG, "do_write_ex len=%d", len_out);
3194     if ((r=cs_put (c->cs, buf_out, len_out)) < 0)
3195     {
3196         if (c->reconnect_ok)
3197         {
3198             do_close (c);
3199             c->reconnect_ok = 0;
3200             yaz_log (LOG_DEBUG, "reconnect write");
3201             c->tasks->running = 0;
3202             ZOOM_connection_insert_task (c, ZOOM_TASK_CONNECT);
3203             return zoom_pending;
3204         }
3205         if (c->state == STATE_CONNECTING)
3206             set_ZOOM_error(c, ZOOM_ERROR_CONNECT, 0);
3207         else
3208             set_ZOOM_error(c, ZOOM_ERROR_CONNECTION_LOST, 0);
3209         do_close (c);
3210         return zoom_complete;
3211     }
3212     else if (r == 1)
3213     {
3214         c->mask = ZOOM_SELECT_EXCEPT;
3215         if (c->cs->io_pending & CS_WANT_WRITE)
3216             c->mask += ZOOM_SELECT_WRITE;
3217         if (c->cs->io_pending & CS_WANT_READ)
3218             c->mask += ZOOM_SELECT_READ;
3219         yaz_log (LOG_DEBUG, "do_write_ex 1 mask=%d", c->mask);
3220     }
3221     else
3222     {
3223         c->mask = ZOOM_SELECT_READ|ZOOM_SELECT_EXCEPT;
3224         yaz_log (LOG_DEBUG, "do_write_ex 2 mask=%d", c->mask);
3225     }
3226     return zoom_pending;
3227 }
3228
3229 static zoom_ret do_write(ZOOM_connection c)
3230 {
3231     return do_write_ex (c, c->buf_out, c->len_out);
3232 }
3233
3234
3235 ZOOM_API(const char *)
3236 ZOOM_connection_option_get (ZOOM_connection c, const char *key)
3237 {
3238     return ZOOM_options_get (c->options, key);
3239 }
3240
3241 ZOOM_API(void)
3242 ZOOM_connection_option_set (ZOOM_connection c, const char *key,
3243                             const char *val)
3244 {
3245     ZOOM_options_set (c->options, key, val);
3246 }
3247
3248 ZOOM_API(void)
3249 ZOOM_connection_option_setl (ZOOM_connection c, const char *key,
3250                              const char *val, int len)
3251 {
3252     ZOOM_options_setl (c->options, key, val, len);
3253 }
3254
3255 ZOOM_API(const char *)
3256 ZOOM_resultset_option_get (ZOOM_resultset r, const char *key)
3257 {
3258     return ZOOM_options_get (r->options, key);
3259 }
3260
3261 ZOOM_API(void)
3262 ZOOM_resultset_option_set (ZOOM_resultset r, const char *key,
3263                                   const char *val)
3264 {
3265     ZOOM_options_set (r->options, key, val);
3266 }
3267
3268
3269 ZOOM_API(int)
3270 ZOOM_connection_errcode (ZOOM_connection c)
3271 {
3272     return ZOOM_connection_error (c, 0, 0);
3273 }
3274
3275 ZOOM_API(const char *)
3276 ZOOM_connection_errmsg (ZOOM_connection c)
3277 {
3278     const char *msg;
3279     ZOOM_connection_error (c, &msg, 0);
3280     return msg;
3281 }
3282
3283 ZOOM_API(const char *)
3284 ZOOM_connection_addinfo (ZOOM_connection c)
3285 {
3286     const char *addinfo;
3287     ZOOM_connection_error (c, 0, &addinfo);
3288     return addinfo;
3289 }
3290
3291 ZOOM_API(const char *)
3292 ZOOM_diag_str (int error)
3293 {
3294     switch (error)
3295     {
3296     case ZOOM_ERROR_NONE:
3297         return "No error";
3298     case ZOOM_ERROR_CONNECT:
3299         return "Connect failed";
3300     case ZOOM_ERROR_MEMORY:
3301         return "Out of memory";
3302     case ZOOM_ERROR_ENCODE:
3303         return "Encoding failed";
3304     case ZOOM_ERROR_DECODE:
3305         return "Decoding failed";
3306     case ZOOM_ERROR_CONNECTION_LOST:
3307         return "Connection lost";
3308     case ZOOM_ERROR_INIT:
3309         return "Init rejected";
3310     case ZOOM_ERROR_INTERNAL:
3311         return "Internal failure";
3312     case ZOOM_ERROR_TIMEOUT:
3313         return "Timeout";
3314     case ZOOM_ERROR_UNSUPPORTED_PROTOCOL:
3315         return "Unsupported protocol";
3316     case ZOOM_ERROR_UNSUPPORTED_QUERY:
3317         return "Unsupported query type";
3318     case ZOOM_ERROR_INVALID_QUERY:
3319         return "Invalid query";
3320     default:
3321         return diagbib1_str (error);
3322     }
3323 }
3324
3325 ZOOM_API(int)
3326 ZOOM_connection_error_x (ZOOM_connection c, const char **cp,
3327                          const char **addinfo, const char **diagset)
3328 {
3329     int error = c->error;
3330     if (cp)
3331     {
3332         if (!c->diagset || !strcmp(c->diagset, "ZOOM"))
3333             *cp = ZOOM_diag_str(error);
3334         else if (!strcmp(c->diagset, "HTTP"))
3335             *cp = z_HTTP_errmsg(c->error);
3336         else if (!strcmp(c->diagset, "Bib-1"))
3337             *cp = ZOOM_diag_str(error);
3338         else if (!strcmp(c->diagset, "info:srw/diagnostic/1"))
3339             *cp = yaz_diag_srw_str(c->error);
3340         else
3341             *cp = "Unknown error and diagnostic set";
3342     }
3343     if (addinfo)
3344         *addinfo = c->addinfo ? c->addinfo : "";
3345     if (diagset)
3346         *diagset = c->diagset ? c->diagset : "";
3347     return c->error;
3348 }
3349
3350 ZOOM_API(int)
3351 ZOOM_connection_error (ZOOM_connection c, const char **cp,
3352                        const char **addinfo)
3353 {
3354     return ZOOM_connection_error_x(c, cp, addinfo, 0);
3355 }
3356
3357 static int ZOOM_connection_do_io(ZOOM_connection c, int mask)
3358 {
3359     ZOOM_Event event = 0;
3360     int r = cs_look(c->cs);
3361     yaz_log (LOG_DEBUG, "ZOOM_connection_do_io c=%p mask=%d cs_look=%d",
3362              c, mask, r);
3363
3364     if (r == CS_NONE)
3365     {
3366         event = ZOOM_Event_create (ZOOM_EVENT_CONNECT);
3367         set_ZOOM_error(c, ZOOM_ERROR_CONNECT, 0);
3368         do_close (c);
3369         ZOOM_connection_put_event (c, event);
3370     }
3371     else if (r == CS_CONNECT)
3372     {
3373         int ret;
3374         event = ZOOM_Event_create (ZOOM_EVENT_CONNECT);
3375
3376         ret = cs_rcvconnect (c->cs);
3377         yaz_log (LOG_DEBUG, "cs_rcvconnect returned %d", ret);
3378         if (ret == 1)
3379         {
3380             c->mask = ZOOM_SELECT_EXCEPT;
3381             if (c->cs->io_pending & CS_WANT_WRITE)
3382                 c->mask += ZOOM_SELECT_WRITE;
3383             if (c->cs->io_pending & CS_WANT_READ)
3384                 c->mask += ZOOM_SELECT_READ;
3385             ZOOM_connection_put_event (c, event);
3386         }
3387         else if (ret == 0)
3388         {
3389             ZOOM_connection_put_event (c, event);
3390             get_cert(c);
3391             if (c->proto == PROTO_Z3950)
3392                 ZOOM_connection_send_init(c);
3393             else
3394             {
3395                 /* no init request for SRW .. */
3396                 assert (c->tasks->which == ZOOM_TASK_CONNECT);
3397                 ZOOM_connection_remove_task (c);
3398                 c->mask = 0;
3399                 ZOOM_connection_exec_task (c);
3400             }
3401             c->state = STATE_ESTABLISHED;
3402         }
3403         else
3404         {
3405             set_ZOOM_error(c, ZOOM_ERROR_CONNECT, 0);
3406             do_close (c);
3407             ZOOM_connection_put_event (c, event);
3408         }
3409     }
3410     else
3411     {
3412         if (mask & ZOOM_SELECT_READ)
3413             do_read (c);
3414         if (c->cs && (mask & ZOOM_SELECT_WRITE))
3415             do_write (c);
3416     }
3417     return 1;
3418 }
3419
3420 ZOOM_API(int)
3421 ZOOM_connection_last_event(ZOOM_connection cs)
3422 {
3423     if (!cs)
3424         return ZOOM_EVENT_NONE;
3425     return cs->last_event;
3426 }
3427
3428 ZOOM_API(int)
3429 ZOOM_event (int no, ZOOM_connection *cs)
3430 {
3431     int timeout = 5000;
3432 #if HAVE_SYS_POLL_H
3433     struct pollfd pollfds[1024];
3434     ZOOM_connection poll_cs[1024];
3435 #else
3436     struct timeval tv;
3437     fd_set input, output, except;
3438 #endif
3439     int i, r, nfds;
3440     int max_fd = 0;
3441
3442     for (i = 0; i<no; i++)
3443     {
3444         ZOOM_connection c = cs[i];
3445         ZOOM_Event event;
3446         if (c && (event = ZOOM_connection_get_event(c)))
3447         {
3448             ZOOM_Event_destroy (event);
3449             return i+1;
3450         }
3451     }
3452     for (i = 0; i<no; i++)
3453     {
3454         ZOOM_connection c = cs[i];
3455         ZOOM_Event event;
3456         if (c && ZOOM_connection_exec_task (c))
3457         {
3458             if ((event = ZOOM_connection_get_event(c)))
3459             {
3460                 ZOOM_Event_destroy (event);
3461                 return i+1;
3462             }
3463         }
3464     }
3465 #if HAVE_SYS_POLL_H
3466
3467 #else
3468     FD_ZERO (&input);
3469     FD_ZERO (&output);
3470     FD_ZERO (&except);
3471 #endif
3472     nfds = 0;
3473     for (i = 0; i<no; i++)
3474     {
3475         ZOOM_connection c = cs[i];
3476         int fd, mask;
3477         int this_timeout;
3478
3479         if (!c)
3480             continue;
3481         fd = z3950_connection_socket(c);
3482         mask = z3950_connection_mask(c);
3483
3484         if (fd == -1)
3485             continue;
3486         if (max_fd < fd)
3487             max_fd = fd;
3488
3489         this_timeout = ZOOM_options_get_int (c->options, "timeout", -1);
3490         if (this_timeout != -1 && this_timeout < timeout)
3491             timeout = this_timeout;
3492 #if HAVE_SYS_POLL_H
3493         if (mask)
3494         {
3495             short poll_events = 0;
3496
3497             if (mask & ZOOM_SELECT_READ)
3498                 poll_events += POLLIN;
3499             if (mask & ZOOM_SELECT_WRITE)
3500                 poll_events += POLLOUT;
3501             if (mask & ZOOM_SELECT_EXCEPT)
3502                 poll_events += POLLERR;
3503             pollfds[nfds].fd = fd;
3504             pollfds[nfds].events = poll_events;
3505             pollfds[nfds].revents = 0;
3506             poll_cs[nfds] = c;
3507             nfds++;
3508         }
3509 #else
3510         if (mask & ZOOM_SELECT_READ)
3511         {
3512             FD_SET (fd, &input);
3513             nfds++;
3514         }
3515         if (mask & ZOOM_SELECT_WRITE)
3516         {
3517             FD_SET (fd, &output);
3518             nfds++;
3519         }
3520         if (mask & ZOOM_SELECT_EXCEPT)
3521         {
3522             FD_SET (fd, &except);
3523             nfds++;
3524         }
3525 #endif
3526     }
3527     if (timeout >= 5000)
3528         timeout = 30;
3529
3530     if (!nfds)
3531         return 0;
3532
3533 #if HAVE_SYS_POLL_H
3534     r = poll (pollfds, nfds, timeout * 1000);
3535     for (i = 0; i<nfds; i++)
3536     {
3537         ZOOM_connection c = poll_cs[i];
3538         if (r && c->mask)
3539         {
3540             int mask = 0;
3541             if (pollfds[i].revents & POLLIN)
3542                 mask += ZOOM_SELECT_READ;
3543             if (pollfds[i].revents & POLLOUT)
3544                 mask += ZOOM_SELECT_WRITE;
3545             if (pollfds[i].revents & POLLERR)
3546                 mask += ZOOM_SELECT_EXCEPT;
3547             if (mask)
3548                 ZOOM_connection_do_io(c, mask);
3549         }
3550         else if (r == 0 && c->mask)
3551         {
3552             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_TIMEOUT);
3553             /* timeout and this connection was waiting */
3554             set_ZOOM_error(c, ZOOM_ERROR_TIMEOUT, 0);
3555             do_close (c);
3556             ZOOM_connection_put_event(c, event);
3557         }
3558     }
3559 #else
3560     tv.tv_sec = timeout;
3561     tv.tv_usec = 0;
3562     yaz_log (LOG_DEBUG, "select start");
3563     r = select (max_fd+1, &input, &output, &except, &tv);
3564     yaz_log (LOG_DEBUG, "select stop, returned r=%d", r);
3565     for (i = 0; i<no; i++)
3566     {
3567         ZOOM_connection c = cs[i];
3568         int fd, mask;
3569
3570         if (!c)
3571             continue;
3572         fd = z3950_connection_socket(c);
3573         mask = 0;
3574         if (r && c->mask)
3575         {
3576             /* no timeout and real socket */
3577             if (FD_ISSET(fd, &input))
3578                 mask += ZOOM_SELECT_READ;
3579             if (FD_ISSET(fd, &output))
3580                 mask += ZOOM_SELECT_WRITE;
3581             if (FD_ISSET(fd, &except))
3582                 mask += ZOOM_SELECT_EXCEPT;
3583             if (mask)
3584                 ZOOM_connection_do_io(c, mask);
3585         }
3586         if (r == 0 && c->mask)
3587         {
3588             ZOOM_Event event = ZOOM_Event_create(ZOOM_EVENT_TIMEOUT);
3589             /* timeout and this connection was waiting */
3590             set_ZOOM_error(c, ZOOM_ERROR_TIMEOUT, 0);
3591             do_close (c);
3592             yaz_log (LOG_DEBUG, "timeout");
3593             ZOOM_connection_put_event(c, event);
3594         }
3595     }
3596 #endif
3597     for (i = 0; i<no; i++)
3598     {
3599         ZOOM_connection c = cs[i];
3600         ZOOM_Event event;
3601         if (c && (event = ZOOM_connection_get_event(c)))
3602         {
3603             ZOOM_Event_destroy (event);
3604             return i+1;
3605         }
3606     }
3607     return 0;
3608 }